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 struct symbol
*lookup_symbol_aux_local (const char *name
,
88 const char *mangled_name
,
89 const struct block
*block
,
90 const namespace_enum
namespace,
91 struct symtab
**symtab
,
92 const struct block
**static_block
);
95 struct symbol
*lookup_symbol_aux_block (const char *name
,
96 const char *mangled_name
,
97 const struct block
*block
,
98 const namespace_enum
namespace,
99 struct symtab
**symtab
);
102 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
104 const char *mangled_name
,
105 const namespace_enum
namespace,
106 struct symtab
**symtab
);
109 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
111 const char *mangled_name
,
112 const namespace_enum
namespace,
113 struct symtab
**symtab
);
116 struct symbol
*lookup_symbol_aux_minsyms (const char *name
,
117 const char *mangled_name
,
118 const namespace_enum
namespace,
119 int *is_a_field_of_this
,
120 struct symtab
**symtab
);
122 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
124 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
125 /* Signals the presence of objects compiled by HP compilers */
126 int hp_som_som_object_present
= 0;
128 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
130 static int file_matches (char *, char **, int);
132 static void print_symbol_info (namespace_enum
,
133 struct symtab
*, struct symbol
*, int, char *);
135 static void print_msymbol_info (struct minimal_symbol
*);
137 static void symtab_symbol_info (char *, namespace_enum
, int);
139 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
141 void _initialize_symtab (void);
145 /* The single non-language-specific builtin type */
146 struct type
*builtin_type_error
;
148 /* Block in which the most recently searched-for symbol was found.
149 Might be better to make this a parameter to lookup_symbol and
152 const struct block
*block_found
;
154 /* Check for a symtab of a specific name; first in symtabs, then in
155 psymtabs. *If* there is no '/' in the name, a match after a '/'
156 in the symtab filename will also work. */
159 lookup_symtab (const char *name
)
161 register struct symtab
*s
;
162 register struct partial_symtab
*ps
;
163 register struct objfile
*objfile
;
164 char *real_path
= NULL
;
165 char *full_path
= NULL
;
167 /* Here we are interested in canonicalizing an absolute path, not
168 absolutizing a relative path. */
169 if (IS_ABSOLUTE_PATH (name
))
171 full_path
= xfullpath (name
);
172 make_cleanup (xfree
, full_path
);
173 real_path
= gdb_realpath (name
);
174 make_cleanup (xfree
, real_path
);
179 /* First, search for an exact match */
181 ALL_SYMTABS (objfile
, s
)
183 if (FILENAME_CMP (name
, s
->filename
) == 0)
188 /* If the user gave us an absolute path, try to find the file in
189 this symtab and use its absolute path. */
191 if (full_path
!= NULL
)
193 const char *fp
= symtab_to_filename (s
);
194 if (FILENAME_CMP (full_path
, fp
) == 0)
200 if (real_path
!= NULL
)
202 char *rp
= gdb_realpath (symtab_to_filename (s
));
203 make_cleanup (xfree
, rp
);
204 if (FILENAME_CMP (real_path
, rp
) == 0)
211 /* Now, search for a matching tail (only if name doesn't have any dirs) */
213 if (lbasename (name
) == name
)
214 ALL_SYMTABS (objfile
, s
)
216 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
220 /* Same search rules as above apply here, but now we look thru the
223 ps
= lookup_partial_symtab (name
);
228 error ("Internal: readin %s pst for `%s' found when no symtab found.",
231 s
= PSYMTAB_TO_SYMTAB (ps
);
236 /* At this point, we have located the psymtab for this file, but
237 the conversion to a symtab has failed. This usually happens
238 when we are looking up an include file. In this case,
239 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
240 been created. So, we need to run through the symtabs again in
241 order to find the file.
242 XXX - This is a crock, and should be fixed inside of the the
243 symbol parsing routines. */
247 /* Lookup the partial symbol table of a source file named NAME.
248 *If* there is no '/' in the name, a match after a '/'
249 in the psymtab filename will also work. */
251 struct partial_symtab
*
252 lookup_partial_symtab (const char *name
)
254 register struct partial_symtab
*pst
;
255 register struct objfile
*objfile
;
256 char *full_path
= NULL
;
257 char *real_path
= NULL
;
259 /* Here we are interested in canonicalizing an absolute path, not
260 absolutizing a relative path. */
261 if (IS_ABSOLUTE_PATH (name
))
263 full_path
= xfullpath (name
);
264 make_cleanup (xfree
, full_path
);
265 real_path
= gdb_realpath (name
);
266 make_cleanup (xfree
, real_path
);
269 ALL_PSYMTABS (objfile
, pst
)
271 if (FILENAME_CMP (name
, pst
->filename
) == 0)
276 /* If the user gave us an absolute path, try to find the file in
277 this symtab and use its absolute path. */
278 if (full_path
!= NULL
)
280 if (pst
->fullname
== NULL
)
281 source_full_path_of (pst
->filename
, &pst
->fullname
);
282 if (pst
->fullname
!= NULL
283 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
289 if (real_path
!= NULL
)
292 if (pst
->fullname
== NULL
)
293 source_full_path_of (pst
->filename
, &pst
->fullname
);
294 if (pst
->fullname
!= NULL
)
296 rp
= gdb_realpath (pst
->fullname
);
297 make_cleanup (xfree
, rp
);
299 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
306 /* Now, search for a matching tail (only if name doesn't have any dirs) */
308 if (lbasename (name
) == name
)
309 ALL_PSYMTABS (objfile
, pst
)
311 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
318 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
319 full method name, which consist of the class name (from T), the unadorned
320 method name from METHOD_ID, and the signature for the specific overload,
321 specified by SIGNATURE_ID. Note that this function is g++ specific. */
324 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
326 int mangled_name_len
;
328 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
329 struct fn_field
*method
= &f
[signature_id
];
330 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
331 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
332 char *newname
= type_name_no_tag (type
);
334 /* Does the form of physname indicate that it is the full mangled name
335 of a constructor (not just the args)? */
336 int is_full_physname_constructor
;
339 int is_destructor
= is_destructor_name (physname
);
340 /* Need a new type prefix. */
341 char *const_prefix
= method
->is_const
? "C" : "";
342 char *volatile_prefix
= method
->is_volatile
? "V" : "";
344 int len
= (newname
== NULL
? 0 : strlen (newname
));
346 /* Nothing to do if physname already contains a fully mangled v3 abi name
347 or an operator name. */
348 if ((physname
[0] == '_' && physname
[1] == 'Z')
349 || is_operator_name (field_name
))
350 return xstrdup (physname
);
352 is_full_physname_constructor
= is_constructor_name (physname
);
355 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
358 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
360 if (is_destructor
|| is_full_physname_constructor
)
362 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
363 strcpy (mangled_name
, physname
);
369 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
371 else if (physname
[0] == 't' || physname
[0] == 'Q')
373 /* The physname for template and qualified methods already includes
375 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
381 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
383 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
384 + strlen (buf
) + len
+ strlen (physname
) + 1);
387 mangled_name
= (char *) xmalloc (mangled_name_len
);
389 mangled_name
[0] = '\0';
391 strcpy (mangled_name
, field_name
);
393 strcat (mangled_name
, buf
);
394 /* If the class doesn't have a name, i.e. newname NULL, then we just
395 mangle it using 0 for the length of the class. Thus it gets mangled
396 as something starting with `::' rather than `classname::'. */
398 strcat (mangled_name
, newname
);
400 strcat (mangled_name
, physname
);
401 return (mangled_name
);
405 /* Initialize the language dependent portion of a symbol
406 depending upon the language for the symbol. */
408 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
409 enum language language
)
411 gsymbol
->language
= language
;
412 if (gsymbol
->language
== language_cplus
413 || gsymbol
->language
== language_java
)
415 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
417 else if (gsymbol
->language
== language_objc
)
419 gsymbol
->language_specific
.objc_specific
.demangled_name
= NULL
;
421 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
423 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
427 memset (&gsymbol
->language_specific
, 0,
428 sizeof (gsymbol
->language_specific
));
432 /* Initialize a symbol's mangled name. */
434 /* Try to initialize the demangled name for a symbol, based on the
435 language of that symbol. If the language is set to language_auto,
436 it will attempt to find any demangling algorithm that works and
437 then set the language appropriately. If no demangling of any kind
438 is found, the language is set back to language_unknown, so we can
439 avoid doing this work again the next time we encounter the symbol.
440 Any required space to store the name is obtained from the specified
444 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
445 struct obstack
*obstack
)
447 char *mangled
= gsymbol
->name
;
448 char *demangled
= NULL
;
450 if (gsymbol
->language
== language_unknown
)
451 gsymbol
->language
= language_auto
;
452 if (gsymbol
->language
== language_cplus
453 || gsymbol
->language
== language_auto
)
456 cplus_demangle (gsymbol
->name
, DMGL_PARAMS
| DMGL_ANSI
);
457 if (demangled
!= NULL
)
459 gsymbol
->language
= language_cplus
;
460 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
461 obsavestring (demangled
, strlen (demangled
), obstack
);
466 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
469 if (gsymbol
->language
== language_java
)
472 cplus_demangle (gsymbol
->name
,
473 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
474 if (demangled
!= NULL
)
476 gsymbol
->language
= language_java
;
477 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
478 obsavestring (demangled
, strlen (demangled
), obstack
);
483 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
487 /* OBSOLETE if (demangled == NULL */
488 /* OBSOLETE && (gsymbol->language == language_chill */
489 /* OBSOLETE || gsymbol->language == language_auto)) */
491 /* OBSOLETE demangled = */
492 /* OBSOLETE chill_demangle (gsymbol->name); */
493 /* OBSOLETE if (demangled != NULL) */
495 /* OBSOLETE gsymbol->language = language_chill; */
496 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
497 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
498 /* OBSOLETE xfree (demangled); */
502 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
508 /* Return the demangled name for a symbol based on the language for
509 that symbol. If no demangled name exists, return NULL. */
511 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
513 if (gsymbol
->language
== language_cplus
514 || gsymbol
->language
== language_java
)
515 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
517 else if (gsymbol
->language
== language_objc
)
518 return gsymbol
->language_specific
.objc_specific
.demangled_name
;
523 /* OBSOLETE (SYMBOL_LANGUAGE (symbol) == language_chill */
524 /* OBSOLETE ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) */
527 /* Initialize the structure fields to zero values. */
529 init_sal (struct symtab_and_line
*sal
)
540 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
542 struct partial_symtab
*
543 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
545 register struct partial_symtab
*pst
;
546 register struct objfile
*objfile
;
547 struct minimal_symbol
*msymbol
;
549 /* If we know that this is not a text address, return failure. This is
550 necessary because we loop based on texthigh and textlow, which do
551 not include the data ranges. */
552 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
554 && (msymbol
->type
== mst_data
555 || msymbol
->type
== mst_bss
556 || msymbol
->type
== mst_abs
557 || msymbol
->type
== mst_file_data
558 || msymbol
->type
== mst_file_bss
))
561 ALL_PSYMTABS (objfile
, pst
)
563 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
565 struct partial_symtab
*tpst
;
567 /* An objfile that has its functions reordered might have
568 many partial symbol tables containing the PC, but
569 we want the partial symbol table that contains the
570 function containing the PC. */
571 if (!(objfile
->flags
& OBJF_REORDERED
) &&
572 section
== 0) /* can't validate section this way */
578 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
580 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
582 struct partial_symbol
*p
;
584 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
586 && SYMBOL_VALUE_ADDRESS (p
)
587 == SYMBOL_VALUE_ADDRESS (msymbol
))
597 /* Find which partial symtab contains PC. Return 0 if none.
598 Backward compatibility, no section */
600 struct partial_symtab
*
601 find_pc_psymtab (CORE_ADDR pc
)
603 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
606 /* Find which partial symbol within a psymtab matches PC and SECTION.
607 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
609 struct partial_symbol
*
610 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
613 struct partial_symbol
*best
= NULL
, *p
, **pp
;
617 psymtab
= find_pc_sect_psymtab (pc
, section
);
621 /* Cope with programs that start at address 0 */
622 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
624 /* Search the global symbols as well as the static symbols, so that
625 find_pc_partial_function doesn't use a minimal symbol and thus
626 cache a bad endaddr. */
627 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
628 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
629 < psymtab
->n_global_syms
);
633 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
634 && SYMBOL_CLASS (p
) == LOC_BLOCK
635 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
636 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
637 || (psymtab
->textlow
== 0
638 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
640 if (section
) /* match on a specific section */
642 fixup_psymbol_section (p
, psymtab
->objfile
);
643 if (SYMBOL_BFD_SECTION (p
) != section
)
646 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
651 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
652 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
653 < psymtab
->n_static_syms
);
657 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
658 && SYMBOL_CLASS (p
) == LOC_BLOCK
659 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
660 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
661 || (psymtab
->textlow
== 0
662 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
664 if (section
) /* match on a specific section */
666 fixup_psymbol_section (p
, psymtab
->objfile
);
667 if (SYMBOL_BFD_SECTION (p
) != section
)
670 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
678 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
679 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
681 struct partial_symbol
*
682 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
684 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
687 /* Debug symbols usually don't have section information. We need to dig that
688 out of the minimal symbols and stash that in the debug symbol. */
691 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
693 struct minimal_symbol
*msym
;
694 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
698 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
699 ginfo
->section
= SYMBOL_SECTION (msym
);
704 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
709 if (SYMBOL_BFD_SECTION (sym
))
712 fixup_section (&sym
->ginfo
, objfile
);
717 struct partial_symbol
*
718 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
723 if (SYMBOL_BFD_SECTION (psym
))
726 fixup_section (&psym
->ginfo
, objfile
);
731 /* Find the definition for a specified symbol name NAME
732 in namespace NAMESPACE, visible from lexical block BLOCK.
733 Returns the struct symbol pointer, or zero if no symbol is found.
734 If SYMTAB is non-NULL, store the symbol table in which the
735 symbol was found there, or NULL if not found.
736 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
737 NAME is a field of the current implied argument `this'. If so set
738 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
739 BLOCK_FOUND is set to the block in which NAME is found (in the case of
740 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
742 /* This function has a bunch of loops in it and it would seem to be
743 attractive to put in some QUIT's (though I'm not really sure
744 whether it can run long enough to be really important). But there
745 are a few calls for which it would appear to be bad news to quit
746 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
747 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
748 code below which can error(), but that probably doesn't affect
749 these calls since they are looking for a known variable and thus
750 can probably assume it will never hit the C++ code). */
753 lookup_symbol (const char *name
, const struct block
*block
,
754 const namespace_enum
namespace, int *is_a_field_of_this
,
755 struct symtab
**symtab
)
757 char *demangled_name
= NULL
;
758 const char *modified_name
= NULL
;
759 const char *mangled_name
= NULL
;
760 int needtofreename
= 0;
761 struct symbol
*returnval
;
763 modified_name
= name
;
765 /* If we are using C++ language, demangle the name before doing a lookup, so
766 we can always binary search. */
767 if (current_language
->la_language
== language_cplus
)
769 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
773 modified_name
= demangled_name
;
778 if (case_sensitivity
== case_sensitive_off
)
784 copy
= (char *) alloca (len
+ 1);
785 for (i
= 0; i
< len
; i
++)
786 copy
[i
] = tolower (name
[i
]);
788 modified_name
= copy
;
791 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
792 namespace, is_a_field_of_this
, symtab
);
794 xfree (demangled_name
);
799 static struct symbol
*
800 lookup_symbol_aux (const char *name
, const char *mangled_name
,
801 const struct block
*block
, const namespace_enum
namespace,
802 int *is_a_field_of_this
, struct symtab
**symtab
)
805 const struct block
*static_block
;
807 /* Search specified block and its superiors. Don't search
808 STATIC_BLOCK or GLOBAL_BLOCK. */
810 sym
= lookup_symbol_aux_local (name
, mangled_name
, block
, namespace,
811 symtab
, &static_block
);
816 /* NOTE: carlton/2002-11-05: At the time that this code was
817 #ifdeffed out, the value of 'block' was always NULL at this
818 point, hence the bemused comments below. */
820 /* FIXME: this code is never executed--block is always NULL at this
821 point. What is it trying to do, anyway? We already should have
822 checked the STATIC_BLOCK above (it is the superblock of top-level
823 blocks). Why is VAR_NAMESPACE special-cased? */
824 /* Don't need to mess with the psymtabs; if we have a block,
825 that file is read in. If we don't, then we deal later with
826 all the psymtab stuff that needs checking. */
827 /* Note (RT): The following never-executed code looks unnecessary to me also.
828 * If we change the code to use the original (passed-in)
829 * value of 'block', we could cause it to execute, but then what
830 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
831 * 'block' was already searched by the above code. And the STATIC_BLOCK's
832 * of *other* symtabs (those files not containing 'block' lexically)
833 * should not contain 'block' address-wise. So we wouldn't expect this
834 * code to find any 'sym''s that were not found above. I vote for
835 * deleting the following paragraph of code.
837 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
840 /* Find the right symtab. */
841 ALL_SYMTABS (objfile
, s
)
843 bv
= BLOCKVECTOR (s
);
844 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
845 if (BLOCK_START (b
) <= BLOCK_START (block
)
846 && BLOCK_END (b
) > BLOCK_START (block
))
848 sym
= lookup_block_symbol (b
, name
, mangled_name
, VAR_NAMESPACE
);
854 return fixup_symbol_section (sym
, objfile
);
861 /* C++: If requested to do so by the caller,
862 check to see if NAME is a field of `this'. */
863 if (is_a_field_of_this
)
865 struct value
*v
= value_of_this (0);
867 *is_a_field_of_this
= 0;
868 if (v
&& check_field (v
, name
))
870 *is_a_field_of_this
= 1;
877 /* If there's a static block to search, search it next. */
879 /* NOTE: carlton/2002-12-05: There is a question as to whether or
880 not it would be appropriate to search the current global block
881 here as well. (That's what this code used to do before the
882 is_a_field_of_this check was moved up.) On the one hand, it's
883 redundant with the lookup_symbol_aux_symtabs search that happens
884 next. On the other hand, if decode_line_1 is passed an argument
885 like filename:var, then the user presumably wants 'var' to be
886 searched for in filename. On the third hand, there shouldn't be
887 multiple global variables all of which are named 'var', and it's
888 not like decode_line_1 has ever restricted its search to only
889 global variables in a single filename. All in all, only
890 searching the static block here seems best: it's correct and it's
893 /* NOTE: carlton/2002-12-05: There's also a possible performance
894 issue here: if you usually search for global symbols in the
895 current file, then it would be slightly better to search the
896 current global block before searching all the symtabs. But there
897 are other factors that have a much greater effect on performance
898 than that one, so I don't think we should worry about that for
901 if (static_block
!= NULL
)
903 sym
= lookup_symbol_aux_block (name
, mangled_name
, static_block
,
909 /* Now search all global blocks. Do the symtab's first, then
910 check the psymtab's. If a psymtab indicates the existence
911 of the desired name as a global, then do psymtab-to-symtab
912 conversion on the fly and return the found symbol. */
914 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, mangled_name
,
921 /* Check for the possibility of the symbol being a function or
922 a mangled variable that is stored in one of the minimal symbol tables.
923 Eventually, all global symbols might be resolved in this way. */
925 sym
= lookup_symbol_aux_minsyms (name
, mangled_name
,
926 namespace, is_a_field_of_this
,
934 sym
= lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, mangled_name
,
939 /* Now search all static file-level symbols. Not strictly correct,
940 but more useful than an error. Do the symtabs first, then check
941 the psymtabs. If a psymtab indicates the existence of the
942 desired name as a file-level static, then do psymtab-to-symtab
943 conversion on the fly and return the found symbol. */
945 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, mangled_name
,
950 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, mangled_name
,
957 /* Check for the possibility of the symbol being a function or
958 a global variable that is stored in one of the minimal symbol tables.
959 The "minimal symbol table" is built from linker-supplied info.
961 RT: I moved this check to last, after the complete search of
962 the global (p)symtab's and static (p)symtab's. For HP-generated
963 symbol tables, this check was causing a premature exit from
964 lookup_symbol with NULL return, and thus messing up symbol lookups
965 of things like "c::f". It seems to me a check of the minimal
966 symbol table ought to be a last resort in any case. I'm vaguely
967 worried about the comment below which talks about FORTRAN routines "foo_"
968 though... is it saying we need to do the "minsym" check before
969 the static check in this case?
973 sym
= lookup_symbol_aux_minsyms (name
, mangled_name
,
974 namespace, is_a_field_of_this
,
987 /* Check to see if the symbol is defined in BLOCK or its superiors.
988 Don't search STATIC_BLOCK or GLOBAL_BLOCK. If we don't find a
989 match, store the address of STATIC_BLOCK in static_block. */
991 static struct symbol
*
992 lookup_symbol_aux_local (const char *name
, const char *mangled_name
,
993 const struct block
*block
,
994 const namespace_enum
namespace,
995 struct symtab
**symtab
,
996 const struct block
**static_block
)
1000 /* Check if either no block is specified or it's a global block. */
1002 if (block
== NULL
|| BLOCK_SUPERBLOCK (block
) == NULL
)
1004 *static_block
= NULL
;
1008 while (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block
)) != NULL
)
1010 sym
= lookup_symbol_aux_block (name
, mangled_name
, block
, namespace,
1014 block
= BLOCK_SUPERBLOCK (block
);
1017 /* We've reached the static block. */
1019 *static_block
= block
;
1023 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1024 symbol, and set block_found appropriately. */
1026 static struct symbol
*
1027 lookup_symbol_aux_block (const char *name
, const char *mangled_name
,
1028 const struct block
*block
,
1029 const namespace_enum
namespace,
1030 struct symtab
**symtab
)
1033 struct objfile
*objfile
= NULL
;
1034 struct blockvector
*bv
;
1036 struct symtab
*s
= NULL
;
1038 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1041 block_found
= block
;
1044 /* Search the list of symtabs for one which contains the
1045 address of the start of this block. */
1046 ALL_SYMTABS (objfile
, s
)
1048 bv
= BLOCKVECTOR (s
);
1049 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1050 if (BLOCK_START (b
) <= BLOCK_START (block
)
1051 && BLOCK_END (b
) > BLOCK_START (block
))
1058 return fixup_symbol_section (sym
, objfile
);
1064 /* Check to see if the symbol is defined in one of the symtabs.
1065 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1066 depending on whether or not we want to search global symbols or
1069 static struct symbol
*
1070 lookup_symbol_aux_symtabs (int block_index
,
1071 const char *name
, const char *mangled_name
,
1072 const namespace_enum
namespace,
1073 struct symtab
**symtab
)
1076 struct objfile
*objfile
;
1077 struct blockvector
*bv
;
1078 const struct block
*block
;
1081 ALL_SYMTABS (objfile
, s
)
1083 bv
= BLOCKVECTOR (s
);
1084 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1085 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1088 block_found
= block
;
1091 return fixup_symbol_section (sym
, objfile
);
1098 /* Check to see if the symbol is defined in one of the partial
1099 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1100 STATIC_BLOCK, depending on whether or not we want to search global
1101 symbols or static symbols. */
1103 static struct symbol
*
1104 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1105 const char *mangled_name
,
1106 const namespace_enum
namespace,
1107 struct symtab
**symtab
)
1110 struct objfile
*objfile
;
1111 struct blockvector
*bv
;
1112 const struct block
*block
;
1113 struct partial_symtab
*ps
;
1115 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1117 ALL_PSYMTABS (objfile
, ps
)
1120 && lookup_partial_symbol (ps
, name
, psymtab_index
, namespace))
1122 s
= PSYMTAB_TO_SYMTAB (ps
);
1123 bv
= BLOCKVECTOR (s
);
1124 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1125 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1128 /* This shouldn't be necessary, but as a last resort try
1129 looking in the statics even though the psymtab claimed
1130 the symbol was global, or vice-versa. It's possible
1131 that the psymtab gets it wrong in some cases. */
1133 /* FIXME: carlton/2002-09-30: Should we really do that?
1134 If that happens, isn't it likely to be a GDB error, in
1135 which case we should fix the GDB error rather than
1136 silently dealing with it here? So I'd vote for
1137 removing the check for the symbol in the other
1139 block
= BLOCKVECTOR_BLOCK (bv
,
1140 block_index
== GLOBAL_BLOCK
?
1141 STATIC_BLOCK
: GLOBAL_BLOCK
);
1142 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1144 error ("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>).",
1145 block_index
== GLOBAL_BLOCK
? "global" : "static",
1146 name
, ps
->filename
, name
, name
);
1150 return fixup_symbol_section (sym
, objfile
);
1157 /* Check for the possibility of the symbol being a function or a
1158 mangled variable that is stored in one of the minimal symbol
1159 tables. Eventually, all global symbols might be resolved in this
1162 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1163 lookup_symbol_aux, and what are now 'return' statements within
1164 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1165 sym was NULL. As far as I can tell, this was basically accidental;
1166 it didn't happen every time that msymbol was non-NULL, but only if
1167 some additional conditions held as well, and it caused problems
1168 with HP-generated symbol tables. */
1170 static struct symbol
*
1171 lookup_symbol_aux_minsyms (const char *name
,
1172 const char *mangled_name
,
1173 const namespace_enum
namespace,
1174 int *is_a_field_of_this
,
1175 struct symtab
**symtab
)
1178 struct blockvector
*bv
;
1179 const struct block
*block
;
1180 struct minimal_symbol
*msymbol
;
1183 if (namespace == VAR_NAMESPACE
)
1185 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1187 if (msymbol
!= NULL
)
1189 /* OK, we found a minimal symbol in spite of not finding any
1190 symbol. There are various possible explanations for
1191 this. One possibility is the symbol exists in code not
1192 compiled -g. Another possibility is that the 'psymtab'
1193 isn't doing its job. A third possibility, related to #2,
1194 is that we were confused by name-mangling. For instance,
1195 maybe the psymtab isn't doing its job because it only
1196 know about demangled names, but we were given a mangled
1199 /* We first use the address in the msymbol to try to locate
1200 the appropriate symtab. Note that find_pc_sect_symtab()
1201 has a side-effect of doing psymtab-to-symtab expansion,
1202 for the found symtab. */
1203 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1204 SYMBOL_BFD_SECTION (msymbol
));
1207 /* This is a function which has a symtab for its address. */
1208 bv
= BLOCKVECTOR (s
);
1209 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1211 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1212 `name' argument to lookup_block_symbol. But the name
1213 of a minimal symbol is always mangled, so that seems
1214 to be clearly the wrong thing to pass as the
1217 lookup_block_symbol (block
, name
, mangled_name
, namespace);
1218 /* We kept static functions in minimal symbol table as well as
1219 in static scope. We want to find them in the symbol table. */
1222 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1223 sym
= lookup_block_symbol (block
, name
,
1224 mangled_name
, namespace);
1227 /* NOTE: carlton/2002-12-04: The following comment was
1228 taken from a time when two versions of this function
1229 were part of the body of lookup_symbol_aux: this
1230 comment was taken from the version of the function
1231 that was #ifdef HPUXHPPA, and the comment was right
1232 before the 'return NULL' part of lookup_symbol_aux.
1233 (Hence the "Fall through and return 0" comment.)
1234 Elena did some digging into the situation for
1235 Fortran, and she reports:
1237 "I asked around (thanks to Jeff Knaggs), and I think
1238 the story for Fortran goes like this:
1240 "Apparently, in older Fortrans, '_' was not part of
1241 the user namespace. g77 attached a final '_' to
1242 procedure names as the exported symbols for linkage
1243 (foo_) , but the symbols went in the debug info just
1244 like 'foo'. The rationale behind this is not
1245 completely clear, and maybe it was done to other
1246 symbols as well, not just procedures." */
1248 /* If we get here with sym == 0, the symbol was
1249 found in the minimal symbol table
1250 but not in the symtab.
1251 Fall through and return 0 to use the msymbol
1252 definition of "foo_".
1253 (Note that outer code generally follows up a call
1254 to this routine with a call to lookup_minimal_symbol(),
1255 so a 0 return means we'll just flow into that other routine).
1257 This happens for Fortran "foo_" symbols,
1258 which are "foo" in the symtab.
1260 This can also happen if "asm" is used to make a
1261 regular symbol but not a debugging symbol, e.g.
1262 asm(".globl _main");
1266 if (symtab
!= NULL
&& sym
!= NULL
)
1268 return fixup_symbol_section (sym
, s
->objfile
);
1270 else if (MSYMBOL_TYPE (msymbol
) != mst_text
1271 && MSYMBOL_TYPE (msymbol
) != mst_file_text
1272 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
1274 /* This is a mangled variable, look it up by its
1276 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), mangled_name
,
1277 NULL
, namespace, is_a_field_of_this
,
1286 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1287 symbols if GLOBAL, the static symbols if not */
1289 static struct partial_symbol
*
1290 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
1291 namespace_enum
namespace)
1293 struct partial_symbol
*temp
;
1294 struct partial_symbol
**start
, **psym
;
1295 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1296 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1297 int do_linear_search
= 1;
1304 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1305 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1307 if (global
) /* This means we can use a binary search. */
1309 do_linear_search
= 0;
1311 /* Binary search. This search is guaranteed to end with center
1312 pointing at the earliest partial symbol with the correct
1313 name. At that point *all* partial symbols with that name
1314 will be checked against the correct namespace. */
1317 top
= start
+ length
- 1;
1319 while (top
> bottom
)
1321 center
= bottom
+ (top
- bottom
) / 2;
1322 if (!(center
< top
))
1323 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1324 if (!do_linear_search
1325 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1327 do_linear_search
= 1;
1329 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1335 bottom
= center
+ 1;
1338 if (!(top
== bottom
))
1339 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1341 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1342 we don't have to force a linear search on C++. Probably holds true
1343 for JAVA as well, no way to check.*/
1344 while (top
<= real_top
&& SYMBOL_MATCHES_NAME (*top
,name
))
1346 if (SYMBOL_NAMESPACE (*top
) == namespace)
1354 /* Can't use a binary search or else we found during the binary search that
1355 we should also do a linear search. */
1357 if (do_linear_search
)
1359 for (psym
= start
; psym
< start
+ length
; psym
++)
1361 if (namespace == SYMBOL_NAMESPACE (*psym
))
1363 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1374 /* Look up a type named NAME in the struct_namespace. The type returned
1375 must not be opaque -- i.e., must have at least one field defined
1377 This code was modelled on lookup_symbol -- the parts not relevant to looking
1378 up types were just left out. In particular it's assumed here that types
1379 are available in struct_namespace and only at file-static or global blocks. */
1383 lookup_transparent_type (const char *name
)
1385 register struct symbol
*sym
;
1386 register struct symtab
*s
= NULL
;
1387 register struct partial_symtab
*ps
;
1388 struct blockvector
*bv
;
1389 register struct objfile
*objfile
;
1390 register struct block
*block
;
1392 /* Now search all the global symbols. Do the symtab's first, then
1393 check the psymtab's. If a psymtab indicates the existence
1394 of the desired name as a global, then do psymtab-to-symtab
1395 conversion on the fly and return the found symbol. */
1397 ALL_SYMTABS (objfile
, s
)
1399 bv
= BLOCKVECTOR (s
);
1400 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1401 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1402 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1404 return SYMBOL_TYPE (sym
);
1408 ALL_PSYMTABS (objfile
, ps
)
1410 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1412 s
= PSYMTAB_TO_SYMTAB (ps
);
1413 bv
= BLOCKVECTOR (s
);
1414 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1415 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1418 /* This shouldn't be necessary, but as a last resort
1419 * try looking in the statics even though the psymtab
1420 * claimed the symbol was global. It's possible that
1421 * the psymtab gets it wrong in some cases.
1423 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1424 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1426 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1427 %s may be an inlined function, or may be a template function\n\
1428 (if a template, try specifying an instantiation: %s<type>).",
1429 name
, ps
->filename
, name
, name
);
1431 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1432 return SYMBOL_TYPE (sym
);
1436 /* Now search the static file-level symbols.
1437 Not strictly correct, but more useful than an error.
1438 Do the symtab's first, then
1439 check the psymtab's. If a psymtab indicates the existence
1440 of the desired name as a file-level static, then do psymtab-to-symtab
1441 conversion on the fly and return the found symbol.
1444 ALL_SYMTABS (objfile
, s
)
1446 bv
= BLOCKVECTOR (s
);
1447 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1448 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1449 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1451 return SYMBOL_TYPE (sym
);
1455 ALL_PSYMTABS (objfile
, ps
)
1457 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1459 s
= PSYMTAB_TO_SYMTAB (ps
);
1460 bv
= BLOCKVECTOR (s
);
1461 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1462 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1465 /* This shouldn't be necessary, but as a last resort
1466 * try looking in the globals even though the psymtab
1467 * claimed the symbol was static. It's possible that
1468 * the psymtab gets it wrong in some cases.
1470 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1471 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1473 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1474 %s may be an inlined function, or may be a template function\n\
1475 (if a template, try specifying an instantiation: %s<type>).",
1476 name
, ps
->filename
, name
, name
);
1478 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1479 return SYMBOL_TYPE (sym
);
1482 return (struct type
*) 0;
1486 /* Find the psymtab containing main(). */
1487 /* FIXME: What about languages without main() or specially linked
1488 executables that have no main() ? */
1490 struct partial_symtab
*
1491 find_main_psymtab (void)
1493 register struct partial_symtab
*pst
;
1494 register struct objfile
*objfile
;
1496 ALL_PSYMTABS (objfile
, pst
)
1498 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1506 /* Search BLOCK for symbol NAME in NAMESPACE.
1508 Note that if NAME is the demangled form of a C++ symbol, we will fail
1509 to find a match during the binary search of the non-encoded names, but
1510 for now we don't worry about the slight inefficiency of looking for
1511 a match we'll never find, since it will go pretty quick. Once the
1512 binary search terminates, we drop through and do a straight linear
1513 search on the symbols. Each symbol which is marked as being a C++
1514 symbol (language_cplus set) has both the encoded and non-encoded names
1517 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1518 particular mangled name.
1522 lookup_block_symbol (register const struct block
*block
, const char *name
,
1523 const char *mangled_name
,
1524 const namespace_enum
namespace)
1526 register int bot
, top
, inc
;
1527 register struct symbol
*sym
;
1528 register struct symbol
*sym_found
= NULL
;
1529 register int do_linear_search
= 1;
1531 if (BLOCK_HASHTABLE (block
))
1533 unsigned int hash_index
;
1534 hash_index
= msymbol_hash_iw (name
);
1535 hash_index
= hash_index
% BLOCK_BUCKETS (block
);
1536 for (sym
= BLOCK_BUCKET (block
, hash_index
); sym
; sym
= sym
->hash_next
)
1538 if (SYMBOL_NAMESPACE (sym
) == namespace
1540 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1541 : SYMBOL_MATCHES_NAME (sym
, name
)))
1547 /* If the blocks's symbols were sorted, start with a binary search. */
1549 if (BLOCK_SHOULD_SORT (block
))
1551 /* Reset the linear search flag so if the binary search fails, we
1552 won't do the linear search once unless we find some reason to
1555 do_linear_search
= 0;
1556 top
= BLOCK_NSYMS (block
);
1559 /* Advance BOT to not far before the first symbol whose name is NAME. */
1563 inc
= (top
- bot
+ 1);
1564 /* No need to keep binary searching for the last few bits worth. */
1569 inc
= (inc
>> 1) + bot
;
1570 sym
= BLOCK_SYM (block
, inc
);
1571 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1573 do_linear_search
= 1;
1575 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1579 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1583 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1593 /* Now scan forward until we run out of symbols, find one whose
1594 name is greater than NAME, or find one we want. If there is
1595 more than one symbol with the right name and namespace, we
1596 return the first one; I believe it is now impossible for us
1597 to encounter two symbols with the same name and namespace
1598 here, because blocks containing argument symbols are no
1599 longer sorted. The exception is for C++, where multiple functions
1600 (cloned constructors / destructors, in particular) can have
1601 the same demangled name. So if we have a particular
1602 mangled name to match, try to do so. */
1604 top
= BLOCK_NSYMS (block
);
1607 sym
= BLOCK_SYM (block
, bot
);
1608 if (SYMBOL_NAMESPACE (sym
) == namespace
1610 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1611 : SYMBOL_MATCHES_NAME (sym
, name
)))
1615 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1623 /* Here if block isn't sorted, or we fail to find a match during the
1624 binary search above. If during the binary search above, we find a
1625 symbol which is a Java symbol, then we have re-enabled the linear
1626 search flag which was reset when starting the binary search.
1628 This loop is equivalent to the loop above, but hacked greatly for speed.
1630 Note that parameter symbols do not always show up last in the
1631 list; this loop makes sure to take anything else other than
1632 parameter symbols first; it only uses parameter symbols as a
1633 last resort. Note that this only takes up extra computation
1636 if (do_linear_search
)
1638 top
= BLOCK_NSYMS (block
);
1642 sym
= BLOCK_SYM (block
, bot
);
1643 if (SYMBOL_NAMESPACE (sym
) == namespace
1645 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1646 : SYMBOL_MATCHES_NAME (sym
, name
)))
1648 /* If SYM has aliases, then use any alias that is active
1649 at the current PC. If no alias is active at the current
1650 PC, then use the main symbol.
1652 ?!? Is checking the current pc correct? Is this routine
1653 ever called to look up a symbol from another context?
1655 FIXME: No, it's not correct. If someone sets a
1656 conditional breakpoint at an address, then the
1657 breakpoint's `struct expression' should refer to the
1658 `struct symbol' appropriate for the breakpoint's
1659 address, which may not be the PC.
1661 Even if it were never called from another context,
1662 it's totally bizarre for lookup_symbol's behavior to
1663 depend on the value of the inferior's current PC. We
1664 should pass in the appropriate PC as well as the
1665 block. The interface to lookup_symbol should change
1666 to require the caller to provide a PC. */
1668 if (SYMBOL_ALIASES (sym
))
1669 sym
= find_active_alias (sym
, read_pc ());
1672 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1673 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1674 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1675 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1676 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1677 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1685 return (sym_found
); /* Will be NULL if not found. */
1688 /* Given a main symbol SYM and ADDR, search through the alias
1689 list to determine if an alias is active at ADDR and return
1692 If no alias is active, then return SYM. */
1694 static struct symbol
*
1695 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1697 struct range_list
*r
;
1698 struct alias_list
*aliases
;
1700 /* If we have aliases, check them first. */
1701 aliases
= SYMBOL_ALIASES (sym
);
1705 if (!SYMBOL_RANGES (aliases
->sym
))
1706 return aliases
->sym
;
1707 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1709 if (r
->start
<= addr
&& r
->end
> addr
)
1710 return aliases
->sym
;
1712 aliases
= aliases
->next
;
1715 /* Nothing found, return the main symbol. */
1720 /* Return the symbol for the function which contains a specified
1721 lexical block, described by a struct block BL. */
1724 block_function (struct block
*bl
)
1726 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1727 bl
= BLOCK_SUPERBLOCK (bl
);
1729 return BLOCK_FUNCTION (bl
);
1732 /* Find the symtab associated with PC and SECTION. Look through the
1733 psymtabs and read in another symtab if necessary. */
1736 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1738 register struct block
*b
;
1739 struct blockvector
*bv
;
1740 register struct symtab
*s
= NULL
;
1741 register struct symtab
*best_s
= NULL
;
1742 register struct partial_symtab
*ps
;
1743 register struct objfile
*objfile
;
1744 CORE_ADDR distance
= 0;
1745 struct minimal_symbol
*msymbol
;
1747 /* If we know that this is not a text address, return failure. This is
1748 necessary because we loop based on the block's high and low code
1749 addresses, which do not include the data ranges, and because
1750 we call find_pc_sect_psymtab which has a similar restriction based
1751 on the partial_symtab's texthigh and textlow. */
1752 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1754 && (msymbol
->type
== mst_data
1755 || msymbol
->type
== mst_bss
1756 || msymbol
->type
== mst_abs
1757 || msymbol
->type
== mst_file_data
1758 || msymbol
->type
== mst_file_bss
))
1761 /* Search all symtabs for the one whose file contains our address, and which
1762 is the smallest of all the ones containing the address. This is designed
1763 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1764 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1765 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1767 This happens for native ecoff format, where code from included files
1768 gets its own symtab. The symtab for the included file should have
1769 been read in already via the dependency mechanism.
1770 It might be swifter to create several symtabs with the same name
1771 like xcoff does (I'm not sure).
1773 It also happens for objfiles that have their functions reordered.
1774 For these, the symtab we are looking for is not necessarily read in. */
1776 ALL_SYMTABS (objfile
, s
)
1778 bv
= BLOCKVECTOR (s
);
1779 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1781 if (BLOCK_START (b
) <= pc
1782 && BLOCK_END (b
) > pc
1784 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1786 /* For an objfile that has its functions reordered,
1787 find_pc_psymtab will find the proper partial symbol table
1788 and we simply return its corresponding symtab. */
1789 /* In order to better support objfiles that contain both
1790 stabs and coff debugging info, we continue on if a psymtab
1792 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1794 ps
= find_pc_sect_psymtab (pc
, section
);
1796 return PSYMTAB_TO_SYMTAB (ps
);
1801 struct symbol
*sym
= NULL
;
1803 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
1805 fixup_symbol_section (sym
, objfile
);
1806 if (section
== SYMBOL_BFD_SECTION (sym
))
1809 if ((i
>= BLOCK_BUCKETS (b
)) && (sym
== NULL
))
1810 continue; /* no symbol in this symtab matches section */
1812 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1821 ps
= find_pc_sect_psymtab (pc
, section
);
1825 /* Might want to error() here (in case symtab is corrupt and
1826 will cause a core dump), but maybe we can successfully
1827 continue, so let's not. */
1829 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1831 s
= PSYMTAB_TO_SYMTAB (ps
);
1836 /* Find the symtab associated with PC. Look through the psymtabs and
1837 read in another symtab if necessary. Backward compatibility, no section */
1840 find_pc_symtab (CORE_ADDR pc
)
1842 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1846 /* Find the source file and line number for a given PC value and SECTION.
1847 Return a structure containing a symtab pointer, a line number,
1848 and a pc range for the entire source line.
1849 The value's .pc field is NOT the specified pc.
1850 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1851 use the line that ends there. Otherwise, in that case, the line
1852 that begins there is used. */
1854 /* The big complication here is that a line may start in one file, and end just
1855 before the start of another file. This usually occurs when you #include
1856 code in the middle of a subroutine. To properly find the end of a line's PC
1857 range, we must search all symtabs associated with this compilation unit, and
1858 find the one whose first PC is closer than that of the next line in this
1861 /* If it's worth the effort, we could be using a binary search. */
1863 struct symtab_and_line
1864 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1867 register struct linetable
*l
;
1870 register struct linetable_entry
*item
;
1871 struct symtab_and_line val
;
1872 struct blockvector
*bv
;
1873 struct minimal_symbol
*msymbol
;
1874 struct minimal_symbol
*mfunsym
;
1876 /* Info on best line seen so far, and where it starts, and its file. */
1878 struct linetable_entry
*best
= NULL
;
1879 CORE_ADDR best_end
= 0;
1880 struct symtab
*best_symtab
= 0;
1882 /* Store here the first line number
1883 of a file which contains the line at the smallest pc after PC.
1884 If we don't find a line whose range contains PC,
1885 we will use a line one less than this,
1886 with a range from the start of that file to the first line's pc. */
1887 struct linetable_entry
*alt
= NULL
;
1888 struct symtab
*alt_symtab
= 0;
1890 /* Info on best line seen in this file. */
1892 struct linetable_entry
*prev
;
1894 /* If this pc is not from the current frame,
1895 it is the address of the end of a call instruction.
1896 Quite likely that is the start of the following statement.
1897 But what we want is the statement containing the instruction.
1898 Fudge the pc to make sure we get that. */
1900 init_sal (&val
); /* initialize to zeroes */
1902 /* It's tempting to assume that, if we can't find debugging info for
1903 any function enclosing PC, that we shouldn't search for line
1904 number info, either. However, GAS can emit line number info for
1905 assembly files --- very helpful when debugging hand-written
1906 assembly code. In such a case, we'd have no debug info for the
1907 function, but we would have line info. */
1912 /* elz: added this because this function returned the wrong
1913 information if the pc belongs to a stub (import/export)
1914 to call a shlib function. This stub would be anywhere between
1915 two functions in the target, and the line info was erroneously
1916 taken to be the one of the line before the pc.
1918 /* RT: Further explanation:
1920 * We have stubs (trampolines) inserted between procedures.
1922 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1923 * exists in the main image.
1925 * In the minimal symbol table, we have a bunch of symbols
1926 * sorted by start address. The stubs are marked as "trampoline",
1927 * the others appear as text. E.g.:
1929 * Minimal symbol table for main image
1930 * main: code for main (text symbol)
1931 * shr1: stub (trampoline symbol)
1932 * foo: code for foo (text symbol)
1934 * Minimal symbol table for "shr1" image:
1936 * shr1: code for shr1 (text symbol)
1939 * So the code below is trying to detect if we are in the stub
1940 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1941 * and if found, do the symbolization from the real-code address
1942 * rather than the stub address.
1944 * Assumptions being made about the minimal symbol table:
1945 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1946 * if we're really in the trampoline. If we're beyond it (say
1947 * we're in "foo" in the above example), it'll have a closer
1948 * symbol (the "foo" text symbol for example) and will not
1949 * return the trampoline.
1950 * 2. lookup_minimal_symbol_text() will find a real text symbol
1951 * corresponding to the trampoline, and whose address will
1952 * be different than the trampoline address. I put in a sanity
1953 * check for the address being the same, to avoid an
1954 * infinite recursion.
1956 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1957 if (msymbol
!= NULL
)
1958 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1960 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1961 if (mfunsym
== NULL
)
1962 /* I eliminated this warning since it is coming out
1963 * in the following situation:
1964 * gdb shmain // test program with shared libraries
1965 * (gdb) break shr1 // function in shared lib
1966 * Warning: In stub for ...
1967 * In the above situation, the shared lib is not loaded yet,
1968 * so of course we can't find the real func/line info,
1969 * but the "break" still works, and the warning is annoying.
1970 * So I commented out the warning. RT */
1971 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1973 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1974 /* Avoid infinite recursion */
1975 /* See above comment about why warning is commented out */
1976 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1979 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1983 s
= find_pc_sect_symtab (pc
, section
);
1986 /* if no symbol information, return previous pc */
1993 bv
= BLOCKVECTOR (s
);
1995 /* Look at all the symtabs that share this blockvector.
1996 They all have the same apriori range, that we found was right;
1997 but they have different line tables. */
1999 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2001 /* Find the best line in this symtab. */
2008 /* I think len can be zero if the symtab lacks line numbers
2009 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2010 I'm not sure which, and maybe it depends on the symbol
2016 item
= l
->item
; /* Get first line info */
2018 /* Is this file's first line closer than the first lines of other files?
2019 If so, record this file, and its first line, as best alternate. */
2020 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2026 for (i
= 0; i
< len
; i
++, item
++)
2028 /* Leave prev pointing to the linetable entry for the last line
2029 that started at or before PC. */
2036 /* At this point, prev points at the line whose start addr is <= pc, and
2037 item points at the next line. If we ran off the end of the linetable
2038 (pc >= start of the last line), then prev == item. If pc < start of
2039 the first line, prev will not be set. */
2041 /* Is this file's best line closer than the best in the other files?
2042 If so, record this file, and its best line, as best so far. */
2044 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
2049 /* Discard BEST_END if it's before the PC of the current BEST. */
2050 if (best_end
<= best
->pc
)
2054 /* If another line (denoted by ITEM) is in the linetable and its
2055 PC is after BEST's PC, but before the current BEST_END, then
2056 use ITEM's PC as the new best_end. */
2057 if (best
&& i
< len
&& item
->pc
> best
->pc
2058 && (best_end
== 0 || best_end
> item
->pc
))
2059 best_end
= item
->pc
;
2065 { /* If we didn't find any line # info, just
2071 val
.symtab
= alt_symtab
;
2072 val
.line
= alt
->line
- 1;
2074 /* Don't return line 0, that means that we didn't find the line. */
2078 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2082 else if (best
->line
== 0)
2084 /* If our best fit is in a range of PC's for which no line
2085 number info is available (line number is zero) then we didn't
2086 find any valid line information. */
2091 val
.symtab
= best_symtab
;
2092 val
.line
= best
->line
;
2094 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2099 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2101 val
.section
= section
;
2105 /* Backward compatibility (no section) */
2107 struct symtab_and_line
2108 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2112 section
= find_pc_overlay (pc
);
2113 if (pc_in_unmapped_range (pc
, section
))
2114 pc
= overlay_mapped_address (pc
, section
);
2115 return find_pc_sect_line (pc
, section
, notcurrent
);
2118 /* Find line number LINE in any symtab whose name is the same as
2121 If found, return the symtab that contains the linetable in which it was
2122 found, set *INDEX to the index in the linetable of the best entry
2123 found, and set *EXACT_MATCH nonzero if the value returned is an
2126 If not found, return NULL. */
2129 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2133 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2137 struct linetable
*best_linetable
;
2138 struct symtab
*best_symtab
;
2140 /* First try looking it up in the given symtab. */
2141 best_linetable
= LINETABLE (symtab
);
2142 best_symtab
= symtab
;
2143 best_index
= find_line_common (best_linetable
, line
, &exact
);
2144 if (best_index
< 0 || !exact
)
2146 /* Didn't find an exact match. So we better keep looking for
2147 another symtab with the same name. In the case of xcoff,
2148 multiple csects for one source file (produced by IBM's FORTRAN
2149 compiler) produce multiple symtabs (this is unavoidable
2150 assuming csects can be at arbitrary places in memory and that
2151 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2153 /* BEST is the smallest linenumber > LINE so far seen,
2154 or 0 if none has been seen so far.
2155 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2158 struct objfile
*objfile
;
2161 if (best_index
>= 0)
2162 best
= best_linetable
->item
[best_index
].line
;
2166 ALL_SYMTABS (objfile
, s
)
2168 struct linetable
*l
;
2171 if (!STREQ (symtab
->filename
, s
->filename
))
2174 ind
= find_line_common (l
, line
, &exact
);
2184 if (best
== 0 || l
->item
[ind
].line
< best
)
2186 best
= l
->item
[ind
].line
;
2199 *index
= best_index
;
2201 *exact_match
= exact
;
2206 /* Set the PC value for a given source file and line number and return true.
2207 Returns zero for invalid line number (and sets the PC to 0).
2208 The source file is specified with a struct symtab. */
2211 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2213 struct linetable
*l
;
2220 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2223 l
= LINETABLE (symtab
);
2224 *pc
= l
->item
[ind
].pc
;
2231 /* Find the range of pc values in a line.
2232 Store the starting pc of the line into *STARTPTR
2233 and the ending pc (start of next line) into *ENDPTR.
2234 Returns 1 to indicate success.
2235 Returns 0 if could not find the specified line. */
2238 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2241 CORE_ADDR startaddr
;
2242 struct symtab_and_line found_sal
;
2245 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2248 /* This whole function is based on address. For example, if line 10 has
2249 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2250 "info line *0x123" should say the line goes from 0x100 to 0x200
2251 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2252 This also insures that we never give a range like "starts at 0x134
2253 and ends at 0x12c". */
2255 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2256 if (found_sal
.line
!= sal
.line
)
2258 /* The specified line (sal) has zero bytes. */
2259 *startptr
= found_sal
.pc
;
2260 *endptr
= found_sal
.pc
;
2264 *startptr
= found_sal
.pc
;
2265 *endptr
= found_sal
.end
;
2270 /* Given a line table and a line number, return the index into the line
2271 table for the pc of the nearest line whose number is >= the specified one.
2272 Return -1 if none is found. The value is >= 0 if it is an index.
2274 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2277 find_line_common (register struct linetable
*l
, register int lineno
,
2283 /* BEST is the smallest linenumber > LINENO so far seen,
2284 or 0 if none has been seen so far.
2285 BEST_INDEX identifies the item for it. */
2287 int best_index
= -1;
2296 for (i
= 0; i
< len
; i
++)
2298 register struct linetable_entry
*item
= &(l
->item
[i
]);
2300 if (item
->line
== lineno
)
2302 /* Return the first (lowest address) entry which matches. */
2307 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2314 /* If we got here, we didn't get an exact match. */
2321 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2323 struct symtab_and_line sal
;
2324 sal
= find_pc_line (pc
, 0);
2327 return sal
.symtab
!= 0;
2330 /* Given a function symbol SYM, find the symtab and line for the start
2332 If the argument FUNFIRSTLINE is nonzero, we want the first line
2333 of real code inside the function. */
2335 struct symtab_and_line
2336 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2339 struct symtab_and_line sal
;
2341 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2342 fixup_symbol_section (sym
, NULL
);
2344 { /* skip "first line" of function (which is actually its prologue) */
2345 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2346 /* If function is in an unmapped overlay, use its unmapped LMA
2347 address, so that SKIP_PROLOGUE has something unique to work on */
2348 if (section_is_overlay (section
) &&
2349 !section_is_mapped (section
))
2350 pc
= overlay_unmapped_address (pc
, section
);
2352 pc
+= FUNCTION_START_OFFSET
;
2353 pc
= SKIP_PROLOGUE (pc
);
2355 /* For overlays, map pc back into its mapped VMA range */
2356 pc
= overlay_mapped_address (pc
, section
);
2358 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2360 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2361 /* Convex: no need to suppress code on first line, if any */
2364 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2365 line is still part of the same function. */
2367 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2368 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2370 /* First pc of next line */
2372 /* Recalculate the line number (might not be N+1). */
2373 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2381 /* If P is of the form "operator[ \t]+..." where `...' is
2382 some legitimate operator text, return a pointer to the
2383 beginning of the substring of the operator text.
2384 Otherwise, return "". */
2386 operator_chars (char *p
, char **end
)
2389 if (strncmp (p
, "operator", 8))
2393 /* Don't get faked out by `operator' being part of a longer
2395 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2398 /* Allow some whitespace between `operator' and the operator symbol. */
2399 while (*p
== ' ' || *p
== '\t')
2402 /* Recognize 'operator TYPENAME'. */
2404 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2406 register char *q
= p
+ 1;
2407 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2416 case '\\': /* regexp quoting */
2419 if (p
[2] == '=') /* 'operator\*=' */
2421 else /* 'operator\*' */
2425 else if (p
[1] == '[')
2428 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2429 else if (p
[2] == '\\' && p
[3] == ']')
2431 *end
= p
+ 4; /* 'operator\[\]' */
2435 error ("nothing is allowed between '[' and ']'");
2439 /* Gratuitous qoute: skip it and move on. */
2461 if (p
[0] == '-' && p
[1] == '>')
2463 /* Struct pointer member operator 'operator->'. */
2466 *end
= p
+ 3; /* 'operator->*' */
2469 else if (p
[2] == '\\')
2471 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2476 *end
= p
+ 2; /* 'operator->' */
2480 if (p
[1] == '=' || p
[1] == p
[0])
2491 error ("`operator ()' must be specified without whitespace in `()'");
2496 error ("`operator ?:' must be specified without whitespace in `?:'");
2501 error ("`operator []' must be specified without whitespace in `[]'");
2505 error ("`operator %s' not supported", p
);
2514 /* If FILE is not already in the table of files, return zero;
2515 otherwise return non-zero. Optionally add FILE to the table if ADD
2516 is non-zero. If *FIRST is non-zero, forget the old table
2519 filename_seen (const char *file
, int add
, int *first
)
2521 /* Table of files seen so far. */
2522 static const char **tab
= NULL
;
2523 /* Allocated size of tab in elements.
2524 Start with one 256-byte block (when using GNU malloc.c).
2525 24 is the malloc overhead when range checking is in effect. */
2526 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2527 /* Current size of tab in elements. */
2528 static int tab_cur_size
;
2534 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2538 /* Is FILE in tab? */
2539 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2540 if (strcmp (*p
, file
) == 0)
2543 /* No; maybe add it to tab. */
2546 if (tab_cur_size
== tab_alloc_size
)
2548 tab_alloc_size
*= 2;
2549 tab
= (const char **) xrealloc ((char *) tab
,
2550 tab_alloc_size
* sizeof (*tab
));
2552 tab
[tab_cur_size
++] = file
;
2558 /* Slave routine for sources_info. Force line breaks at ,'s.
2559 NAME is the name to print and *FIRST is nonzero if this is the first
2560 name printed. Set *FIRST to zero. */
2562 output_source_filename (char *name
, int *first
)
2564 /* Since a single source file can result in several partial symbol
2565 tables, we need to avoid printing it more than once. Note: if
2566 some of the psymtabs are read in and some are not, it gets
2567 printed both under "Source files for which symbols have been
2568 read" and "Source files for which symbols will be read in on
2569 demand". I consider this a reasonable way to deal with the
2570 situation. I'm not sure whether this can also happen for
2571 symtabs; it doesn't hurt to check. */
2573 /* Was NAME already seen? */
2574 if (filename_seen (name
, 1, first
))
2576 /* Yes; don't print it again. */
2579 /* No; print it and reset *FIRST. */
2586 printf_filtered (", ");
2590 fputs_filtered (name
, gdb_stdout
);
2594 sources_info (char *ignore
, int from_tty
)
2596 register struct symtab
*s
;
2597 register struct partial_symtab
*ps
;
2598 register struct objfile
*objfile
;
2601 if (!have_full_symbols () && !have_partial_symbols ())
2603 error ("No symbol table is loaded. Use the \"file\" command.");
2606 printf_filtered ("Source files for which symbols have been read in:\n\n");
2609 ALL_SYMTABS (objfile
, s
)
2611 output_source_filename (s
->filename
, &first
);
2613 printf_filtered ("\n\n");
2615 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2618 ALL_PSYMTABS (objfile
, ps
)
2622 output_source_filename (ps
->filename
, &first
);
2625 printf_filtered ("\n");
2629 file_matches (char *file
, char *files
[], int nfiles
)
2633 if (file
!= NULL
&& nfiles
!= 0)
2635 for (i
= 0; i
< nfiles
; i
++)
2637 if (strcmp (files
[i
], lbasename (file
)) == 0)
2641 else if (nfiles
== 0)
2646 /* Free any memory associated with a search. */
2648 free_search_symbols (struct symbol_search
*symbols
)
2650 struct symbol_search
*p
;
2651 struct symbol_search
*next
;
2653 for (p
= symbols
; p
!= NULL
; p
= next
)
2661 do_free_search_symbols_cleanup (void *symbols
)
2663 free_search_symbols (symbols
);
2667 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2669 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2672 /* Helper function for sort_search_symbols and qsort. Can only
2673 sort symbols, not minimal symbols. */
2675 compare_search_syms (const void *sa
, const void *sb
)
2677 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2678 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2680 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a
)->symbol
),
2681 SYMBOL_SOURCE_NAME ((*sym_b
)->symbol
));
2684 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2685 prevtail where it is, but update its next pointer to point to
2686 the first of the sorted symbols. */
2687 static struct symbol_search
*
2688 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2690 struct symbol_search
**symbols
, *symp
, *old_next
;
2693 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2695 symp
= prevtail
->next
;
2696 for (i
= 0; i
< nfound
; i
++)
2701 /* Generally NULL. */
2704 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2705 compare_search_syms
);
2708 for (i
= 0; i
< nfound
; i
++)
2710 symp
->next
= symbols
[i
];
2713 symp
->next
= old_next
;
2719 /* Search the symbol table for matches to the regular expression REGEXP,
2720 returning the results in *MATCHES.
2722 Only symbols of KIND are searched:
2723 FUNCTIONS_NAMESPACE - search all functions
2724 TYPES_NAMESPACE - search all type names
2725 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2726 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2727 and constants (enums)
2729 free_search_symbols should be called when *MATCHES is no longer needed.
2731 The results are sorted locally; each symtab's global and static blocks are
2732 separately alphabetized.
2735 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2736 struct symbol_search
**matches
)
2738 register struct symtab
*s
;
2739 register struct partial_symtab
*ps
;
2740 register struct blockvector
*bv
;
2741 struct blockvector
*prev_bv
= 0;
2742 register struct block
*b
;
2745 register struct symbol
*sym
;
2746 struct partial_symbol
**psym
;
2747 struct objfile
*objfile
;
2748 struct minimal_symbol
*msymbol
;
2751 static enum minimal_symbol_type types
[]
2753 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2754 static enum minimal_symbol_type types2
[]
2756 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2757 static enum minimal_symbol_type types3
[]
2759 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2760 static enum minimal_symbol_type types4
[]
2762 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2763 enum minimal_symbol_type ourtype
;
2764 enum minimal_symbol_type ourtype2
;
2765 enum minimal_symbol_type ourtype3
;
2766 enum minimal_symbol_type ourtype4
;
2767 struct symbol_search
*sr
;
2768 struct symbol_search
*psr
;
2769 struct symbol_search
*tail
;
2770 struct cleanup
*old_chain
= NULL
;
2772 if (kind
< VARIABLES_NAMESPACE
)
2773 error ("must search on specific namespace");
2775 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2776 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2777 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2778 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2780 sr
= *matches
= NULL
;
2785 /* Make sure spacing is right for C++ operators.
2786 This is just a courtesy to make the matching less sensitive
2787 to how many spaces the user leaves between 'operator'
2788 and <TYPENAME> or <OPERATOR>. */
2790 char *opname
= operator_chars (regexp
, &opend
);
2793 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2794 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2796 /* There should 1 space between 'operator' and 'TYPENAME'. */
2797 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2802 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2803 if (opname
[-1] == ' ')
2806 /* If wrong number of spaces, fix it. */
2809 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2810 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2815 if (0 != (val
= re_comp (regexp
)))
2816 error ("Invalid regexp (%s): %s", val
, regexp
);
2819 /* Search through the partial symtabs *first* for all symbols
2820 matching the regexp. That way we don't have to reproduce all of
2821 the machinery below. */
2823 ALL_PSYMTABS (objfile
, ps
)
2825 struct partial_symbol
**bound
, **gbound
, **sbound
;
2831 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2832 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2835 /* Go through all of the symbols stored in a partial
2836 symtab in one loop. */
2837 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2842 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2844 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2855 /* If it would match (logic taken from loop below)
2856 load the file and go on to the next one */
2857 if (file_matches (ps
->filename
, files
, nfiles
)
2858 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2859 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2860 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2861 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2862 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2863 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2865 PSYMTAB_TO_SYMTAB (ps
);
2873 /* Here, we search through the minimal symbol tables for functions
2874 and variables that match, and force their symbols to be read.
2875 This is in particular necessary for demangled variable names,
2876 which are no longer put into the partial symbol tables.
2877 The symbol will then be found during the scan of symtabs below.
2879 For functions, find_pc_symtab should succeed if we have debug info
2880 for the function, for variables we have to call lookup_symbol
2881 to determine if the variable has debug info.
2882 If the lookup fails, set found_misc so that we will rescan to print
2883 any matching symbols without debug info.
2886 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2888 ALL_MSYMBOLS (objfile
, msymbol
)
2890 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2891 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2892 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2893 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2895 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2897 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2899 if (kind
== FUNCTIONS_NAMESPACE
)
2907 if (SYMBOL_DEMANGLED_NAME (msymbol
) != NULL
)
2909 = lookup_symbol_aux_minsyms (SYMBOL_DEMANGLED_NAME
2911 SYMBOL_NAME (msymbol
),
2916 = lookup_symbol_aux_minsyms (SYMBOL_NAME (msymbol
),
2930 ALL_SYMTABS (objfile
, s
)
2932 bv
= BLOCKVECTOR (s
);
2933 /* Often many files share a blockvector.
2934 Scan each blockvector only once so that
2935 we don't get every symbol many times.
2936 It happens that the first symtab in the list
2937 for any given blockvector is the main file. */
2939 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2941 struct symbol_search
*prevtail
= tail
;
2943 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2944 ALL_BLOCK_SYMBOLS (b
, j
, sym
)
2947 if (file_matches (s
->filename
, files
, nfiles
)
2948 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2949 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2950 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2951 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2952 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2953 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2954 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2957 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2961 psr
->msymbol
= NULL
;
2973 if (prevtail
== NULL
)
2975 struct symbol_search dummy
;
2978 tail
= sort_search_symbols (&dummy
, nfound
);
2981 old_chain
= make_cleanup_free_search_symbols (sr
);
2984 tail
= sort_search_symbols (prevtail
, nfound
);
2990 /* If there are no eyes, avoid all contact. I mean, if there are
2991 no debug symbols, then print directly from the msymbol_vector. */
2993 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2995 ALL_MSYMBOLS (objfile
, msymbol
)
2997 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2998 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2999 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3000 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3002 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3004 /* Functions: Look up by address. */
3005 if (kind
!= FUNCTIONS_NAMESPACE
||
3006 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3008 /* Variables/Absolutes: Look up by name */
3009 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3010 (struct block
*) NULL
, VAR_NAMESPACE
,
3011 0, (struct symtab
**) NULL
) == NULL
)
3014 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3016 psr
->msymbol
= msymbol
;
3023 old_chain
= make_cleanup_free_search_symbols (sr
);
3037 discard_cleanups (old_chain
);
3040 /* Helper function for symtab_symbol_info, this function uses
3041 the data returned from search_symbols() to print information
3042 regarding the match to gdb_stdout.
3045 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3046 int block
, char *last
)
3048 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3050 fputs_filtered ("\nFile ", gdb_stdout
);
3051 fputs_filtered (s
->filename
, gdb_stdout
);
3052 fputs_filtered (":\n", gdb_stdout
);
3055 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3056 printf_filtered ("static ");
3058 /* Typedef that is not a C++ class */
3059 if (kind
== TYPES_NAMESPACE
3060 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3061 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3062 /* variable, func, or typedef-that-is-c++-class */
3063 else if (kind
< TYPES_NAMESPACE
||
3064 (kind
== TYPES_NAMESPACE
&&
3065 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3067 type_print (SYMBOL_TYPE (sym
),
3068 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3069 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3072 printf_filtered (";\n");
3076 /* This help function for symtab_symbol_info() prints information
3077 for non-debugging symbols to gdb_stdout.
3080 print_msymbol_info (struct minimal_symbol
*msymbol
)
3084 if (TARGET_ADDR_BIT
<= 32)
3085 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3086 & (CORE_ADDR
) 0xffffffff,
3089 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3091 printf_filtered ("%s %s\n",
3092 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
3095 /* This is the guts of the commands "info functions", "info types", and
3096 "info variables". It calls search_symbols to find all matches and then
3097 print_[m]symbol_info to print out some useful information about the
3101 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
3103 static char *classnames
[]
3105 {"variable", "function", "type", "method"};
3106 struct symbol_search
*symbols
;
3107 struct symbol_search
*p
;
3108 struct cleanup
*old_chain
;
3109 char *last_filename
= NULL
;
3112 /* must make sure that if we're interrupted, symbols gets freed */
3113 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3114 old_chain
= make_cleanup_free_search_symbols (symbols
);
3116 printf_filtered (regexp
3117 ? "All %ss matching regular expression \"%s\":\n"
3118 : "All defined %ss:\n",
3119 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
3121 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3125 if (p
->msymbol
!= NULL
)
3129 printf_filtered ("\nNon-debugging symbols:\n");
3132 print_msymbol_info (p
->msymbol
);
3136 print_symbol_info (kind
,
3141 last_filename
= p
->symtab
->filename
;
3145 do_cleanups (old_chain
);
3149 variables_info (char *regexp
, int from_tty
)
3151 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3155 functions_info (char *regexp
, int from_tty
)
3157 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3162 types_info (char *regexp
, int from_tty
)
3164 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3167 /* Breakpoint all functions matching regular expression. */
3170 rbreak_command_wrapper (char *regexp
, int from_tty
)
3172 rbreak_command (regexp
, from_tty
);
3176 rbreak_command (char *regexp
, int from_tty
)
3178 struct symbol_search
*ss
;
3179 struct symbol_search
*p
;
3180 struct cleanup
*old_chain
;
3182 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3183 old_chain
= make_cleanup_free_search_symbols (ss
);
3185 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3187 if (p
->msymbol
== NULL
)
3189 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3190 + strlen (SYMBOL_NAME (p
->symbol
))
3192 strcpy (string
, p
->symtab
->filename
);
3193 strcat (string
, ":'");
3194 strcat (string
, SYMBOL_NAME (p
->symbol
));
3195 strcat (string
, "'");
3196 break_command (string
, from_tty
);
3197 print_symbol_info (FUNCTIONS_NAMESPACE
,
3201 p
->symtab
->filename
);
3205 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3206 printf_filtered ("<function, no debug info> %s;\n",
3207 SYMBOL_SOURCE_NAME (p
->msymbol
));
3211 do_cleanups (old_chain
);
3215 /* Return Nonzero if block a is lexically nested within block b,
3216 or if a and b have the same pc range.
3217 Return zero otherwise. */
3219 contained_in (struct block
*a
, struct block
*b
)
3223 return BLOCK_START (a
) >= BLOCK_START (b
)
3224 && BLOCK_END (a
) <= BLOCK_END (b
);
3228 /* Helper routine for make_symbol_completion_list. */
3230 static int return_val_size
;
3231 static int return_val_index
;
3232 static char **return_val
;
3234 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3236 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3237 /* Put only the mangled name on the list. */ \
3238 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3239 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3240 completion_list_add_name \
3241 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3243 completion_list_add_name \
3244 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3247 /* Test to see if the symbol specified by SYMNAME (which is already
3248 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3249 characters. If so, add it to the current completion list. */
3252 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3253 char *text
, char *word
)
3258 /* clip symbols that cannot match */
3260 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3265 /* We have a match for a completion, so add SYMNAME to the current list
3266 of matches. Note that the name is moved to freshly malloc'd space. */
3270 if (word
== sym_text
)
3272 new = xmalloc (strlen (symname
) + 5);
3273 strcpy (new, symname
);
3275 else if (word
> sym_text
)
3277 /* Return some portion of symname. */
3278 new = xmalloc (strlen (symname
) + 5);
3279 strcpy (new, symname
+ (word
- sym_text
));
3283 /* Return some of SYM_TEXT plus symname. */
3284 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3285 strncpy (new, word
, sym_text
- word
);
3286 new[sym_text
- word
] = '\0';
3287 strcat (new, symname
);
3290 if (return_val_index
+ 3 > return_val_size
)
3292 newsize
= (return_val_size
*= 2) * sizeof (char *);
3293 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3295 return_val
[return_val_index
++] = new;
3296 return_val
[return_val_index
] = NULL
;
3300 /* Return a NULL terminated array of all symbols (regardless of class)
3301 which begin by matching TEXT. If the answer is no symbols, then
3302 the return value is an array which contains only a NULL pointer.
3304 Problem: All of the symbols have to be copied because readline frees them.
3305 I'm not going to worry about this; hopefully there won't be that many. */
3308 make_symbol_completion_list (char *text
, char *word
)
3310 register struct symbol
*sym
;
3311 register struct symtab
*s
;
3312 register struct partial_symtab
*ps
;
3313 register struct minimal_symbol
*msymbol
;
3314 register struct objfile
*objfile
;
3315 register struct block
*b
, *surrounding_static_block
= 0;
3317 struct partial_symbol
**psym
;
3318 /* The symbol we are completing on. Points in same buffer as text. */
3320 /* Length of sym_text. */
3323 /* Now look for the symbol we are supposed to complete on.
3324 FIXME: This should be language-specific. */
3328 char *quote_pos
= NULL
;
3330 /* First see if this is a quoted string. */
3332 for (p
= text
; *p
!= '\0'; ++p
)
3334 if (quote_found
!= '\0')
3336 if (*p
== quote_found
)
3337 /* Found close quote. */
3339 else if (*p
== '\\' && p
[1] == quote_found
)
3340 /* A backslash followed by the quote character
3341 doesn't end the string. */
3344 else if (*p
== '\'' || *p
== '"')
3350 if (quote_found
== '\'')
3351 /* A string within single quotes can be a symbol, so complete on it. */
3352 sym_text
= quote_pos
+ 1;
3353 else if (quote_found
== '"')
3354 /* A double-quoted string is never a symbol, nor does it make sense
3355 to complete it any other way. */
3357 return_val
= (char **) xmalloc (sizeof (char *));
3358 return_val
[0] = NULL
;
3363 /* It is not a quoted string. Break it based on the characters
3364 which are in symbols. */
3367 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3376 sym_text_len
= strlen (sym_text
);
3378 return_val_size
= 100;
3379 return_val_index
= 0;
3380 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3381 return_val
[0] = NULL
;
3383 /* Look through the partial symtabs for all symbols which begin
3384 by matching SYM_TEXT. Add each one that you find to the list. */
3386 ALL_PSYMTABS (objfile
, ps
)
3388 /* If the psymtab's been read in we'll get it when we search
3389 through the blockvector. */
3393 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3394 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3395 + ps
->n_global_syms
);
3398 /* If interrupted, then quit. */
3400 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3403 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3404 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3405 + ps
->n_static_syms
);
3409 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3413 /* At this point scan through the misc symbol vectors and add each
3414 symbol you find to the list. Eventually we want to ignore
3415 anything that isn't a text symbol (everything else will be
3416 handled by the psymtab code above). */
3418 ALL_MSYMBOLS (objfile
, msymbol
)
3421 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3424 /* Search upwards from currently selected frame (so that we can
3425 complete on local vars. */
3427 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3429 if (!BLOCK_SUPERBLOCK (b
))
3431 surrounding_static_block
= b
; /* For elmin of dups */
3434 /* Also catch fields of types defined in this places which match our
3435 text string. Only complete on types visible from current context. */
3437 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3439 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3440 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3442 struct type
*t
= SYMBOL_TYPE (sym
);
3443 enum type_code c
= TYPE_CODE (t
);
3445 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3447 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3449 if (TYPE_FIELD_NAME (t
, j
))
3451 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3452 sym_text
, sym_text_len
, text
, word
);
3460 /* Go through the symtabs and check the externs and statics for
3461 symbols which match. */
3463 ALL_SYMTABS (objfile
, s
)
3466 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3467 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3469 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3473 ALL_SYMTABS (objfile
, s
)
3476 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3477 /* Don't do this block twice. */
3478 if (b
== surrounding_static_block
)
3480 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3482 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3486 return (return_val
);
3489 /* Like make_symbol_completion_list, but returns a list of symbols
3490 defined in a source file FILE. */
3493 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3495 register struct symbol
*sym
;
3496 register struct symtab
*s
;
3497 register struct block
*b
;
3499 /* The symbol we are completing on. Points in same buffer as text. */
3501 /* Length of sym_text. */
3504 /* Now look for the symbol we are supposed to complete on.
3505 FIXME: This should be language-specific. */
3509 char *quote_pos
= NULL
;
3511 /* First see if this is a quoted string. */
3513 for (p
= text
; *p
!= '\0'; ++p
)
3515 if (quote_found
!= '\0')
3517 if (*p
== quote_found
)
3518 /* Found close quote. */
3520 else if (*p
== '\\' && p
[1] == quote_found
)
3521 /* A backslash followed by the quote character
3522 doesn't end the string. */
3525 else if (*p
== '\'' || *p
== '"')
3531 if (quote_found
== '\'')
3532 /* A string within single quotes can be a symbol, so complete on it. */
3533 sym_text
= quote_pos
+ 1;
3534 else if (quote_found
== '"')
3535 /* A double-quoted string is never a symbol, nor does it make sense
3536 to complete it any other way. */
3538 return_val
= (char **) xmalloc (sizeof (char *));
3539 return_val
[0] = NULL
;
3544 /* It is not a quoted string. Break it based on the characters
3545 which are in symbols. */
3548 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3557 sym_text_len
= strlen (sym_text
);
3559 return_val_size
= 10;
3560 return_val_index
= 0;
3561 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3562 return_val
[0] = NULL
;
3564 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3566 s
= lookup_symtab (srcfile
);
3569 /* Maybe they typed the file with leading directories, while the
3570 symbol tables record only its basename. */
3571 const char *tail
= lbasename (srcfile
);
3574 s
= lookup_symtab (tail
);
3577 /* If we have no symtab for that file, return an empty list. */
3579 return (return_val
);
3581 /* Go through this symtab and check the externs and statics for
3582 symbols which match. */
3584 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3585 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3587 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3590 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3591 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3593 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3596 return (return_val
);
3599 /* A helper function for make_source_files_completion_list. It adds
3600 another file name to a list of possible completions, growing the
3601 list as necessary. */
3604 add_filename_to_list (const char *fname
, char *text
, char *word
,
3605 char ***list
, int *list_used
, int *list_alloced
)
3608 size_t fnlen
= strlen (fname
);
3610 if (*list_used
+ 1 >= *list_alloced
)
3613 *list
= (char **) xrealloc ((char *) *list
,
3614 *list_alloced
* sizeof (char *));
3619 /* Return exactly fname. */
3620 new = xmalloc (fnlen
+ 5);
3621 strcpy (new, fname
);
3623 else if (word
> text
)
3625 /* Return some portion of fname. */
3626 new = xmalloc (fnlen
+ 5);
3627 strcpy (new, fname
+ (word
- text
));
3631 /* Return some of TEXT plus fname. */
3632 new = xmalloc (fnlen
+ (text
- word
) + 5);
3633 strncpy (new, word
, text
- word
);
3634 new[text
- word
] = '\0';
3635 strcat (new, fname
);
3637 (*list
)[*list_used
] = new;
3638 (*list
)[++*list_used
] = NULL
;
3642 not_interesting_fname (const char *fname
)
3644 static const char *illegal_aliens
[] = {
3645 "_globals_", /* inserted by coff_symtab_read */
3650 for (i
= 0; illegal_aliens
[i
]; i
++)
3652 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3658 /* Return a NULL terminated array of all source files whose names
3659 begin with matching TEXT. The file names are looked up in the
3660 symbol tables of this program. If the answer is no matchess, then
3661 the return value is an array which contains only a NULL pointer. */
3664 make_source_files_completion_list (char *text
, char *word
)
3666 register struct symtab
*s
;
3667 register struct partial_symtab
*ps
;
3668 register struct objfile
*objfile
;
3670 int list_alloced
= 1;
3672 size_t text_len
= strlen (text
);
3673 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3674 const char *base_name
;
3678 if (!have_full_symbols () && !have_partial_symbols ())
3681 ALL_SYMTABS (objfile
, s
)
3683 if (not_interesting_fname (s
->filename
))
3685 if (!filename_seen (s
->filename
, 1, &first
)
3686 #if HAVE_DOS_BASED_FILE_SYSTEM
3687 && strncasecmp (s
->filename
, text
, text_len
) == 0
3689 && strncmp (s
->filename
, text
, text_len
) == 0
3693 /* This file matches for a completion; add it to the current
3695 add_filename_to_list (s
->filename
, text
, word
,
3696 &list
, &list_used
, &list_alloced
);
3700 /* NOTE: We allow the user to type a base name when the
3701 debug info records leading directories, but not the other
3702 way around. This is what subroutines of breakpoint
3703 command do when they parse file names. */
3704 base_name
= lbasename (s
->filename
);
3705 if (base_name
!= s
->filename
3706 && !filename_seen (base_name
, 1, &first
)
3707 #if HAVE_DOS_BASED_FILE_SYSTEM
3708 && strncasecmp (base_name
, text
, text_len
) == 0
3710 && strncmp (base_name
, text
, text_len
) == 0
3713 add_filename_to_list (base_name
, text
, word
,
3714 &list
, &list_used
, &list_alloced
);
3718 ALL_PSYMTABS (objfile
, ps
)
3720 if (not_interesting_fname (ps
->filename
))
3724 if (!filename_seen (ps
->filename
, 1, &first
)
3725 #if HAVE_DOS_BASED_FILE_SYSTEM
3726 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3728 && strncmp (ps
->filename
, text
, text_len
) == 0
3732 /* This file matches for a completion; add it to the
3733 current list of matches. */
3734 add_filename_to_list (ps
->filename
, text
, word
,
3735 &list
, &list_used
, &list_alloced
);
3740 base_name
= lbasename (ps
->filename
);
3741 if (base_name
!= ps
->filename
3742 && !filename_seen (base_name
, 1, &first
)
3743 #if HAVE_DOS_BASED_FILE_SYSTEM
3744 && strncasecmp (base_name
, text
, text_len
) == 0
3746 && strncmp (base_name
, text
, text_len
) == 0
3749 add_filename_to_list (base_name
, text
, word
,
3750 &list
, &list_used
, &list_alloced
);
3758 /* Determine if PC is in the prologue of a function. The prologue is the area
3759 between the first instruction of a function, and the first executable line.
3760 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3762 If non-zero, func_start is where we think the prologue starts, possibly
3763 by previous examination of symbol table information.
3767 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3769 struct symtab_and_line sal
;
3770 CORE_ADDR func_addr
, func_end
;
3772 /* We have several sources of information we can consult to figure
3774 - Compilers usually emit line number info that marks the prologue
3775 as its own "source line". So the ending address of that "line"
3776 is the end of the prologue. If available, this is the most
3778 - The minimal symbols and partial symbols, which can usually tell
3779 us the starting and ending addresses of a function.
3780 - If we know the function's start address, we can call the
3781 architecture-defined SKIP_PROLOGUE function to analyze the
3782 instruction stream and guess where the prologue ends.
3783 - Our `func_start' argument; if non-zero, this is the caller's
3784 best guess as to the function's entry point. At the time of
3785 this writing, handle_inferior_event doesn't get this right, so
3786 it should be our last resort. */
3788 /* Consult the partial symbol table, to find which function
3790 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3792 CORE_ADDR prologue_end
;
3794 /* We don't even have minsym information, so fall back to using
3795 func_start, if given. */
3797 return 1; /* We *might* be in a prologue. */
3799 prologue_end
= SKIP_PROLOGUE (func_start
);
3801 return func_start
<= pc
&& pc
< prologue_end
;
3804 /* If we have line number information for the function, that's
3805 usually pretty reliable. */
3806 sal
= find_pc_line (func_addr
, 0);
3808 /* Now sal describes the source line at the function's entry point,
3809 which (by convention) is the prologue. The end of that "line",
3810 sal.end, is the end of the prologue.
3812 Note that, for functions whose source code is all on a single
3813 line, the line number information doesn't always end up this way.
3814 So we must verify that our purported end-of-prologue address is
3815 *within* the function, not at its start or end. */
3817 || sal
.end
<= func_addr
3818 || func_end
<= sal
.end
)
3820 /* We don't have any good line number info, so use the minsym
3821 information, together with the architecture-specific prologue
3823 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3825 return func_addr
<= pc
&& pc
< prologue_end
;
3828 /* We have line number info, and it looks good. */
3829 return func_addr
<= pc
&& pc
< sal
.end
;
3833 /* Begin overload resolution functions */
3836 remove_params (const char *demangled_name
)
3842 if (demangled_name
== NULL
)
3845 /* First find the end of the arg list. */
3846 argp
= strrchr (demangled_name
, ')');
3850 /* Back up to the beginning. */
3853 while (argp
-- > demangled_name
)
3857 else if (*argp
== '(')
3866 internal_error (__FILE__
, __LINE__
,
3867 "bad demangled name %s\n", demangled_name
);
3868 while (argp
[-1] == ' ' && argp
> demangled_name
)
3871 new_name
= xmalloc (argp
- demangled_name
+ 1);
3872 memcpy (new_name
, demangled_name
, argp
- demangled_name
);
3873 new_name
[argp
- demangled_name
] = '\0';
3877 /* Helper routine for make_symbol_completion_list. */
3879 static int sym_return_val_size
;
3880 static int sym_return_val_index
;
3881 static struct symbol
**sym_return_val
;
3883 /* Test to see if the symbol specified by SYMNAME (which is already
3884 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3885 characters. If so, add it to the current completion list. */
3888 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3894 /* If there is no type information, we can't do anything, so skip */
3895 if (SYMBOL_TYPE (sym
) == NULL
)
3898 /* skip any symbols that we've already considered. */
3899 for (i
= 0; i
< sym_return_val_index
; ++i
)
3900 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3903 /* Get the demangled name without parameters */
3904 sym_name
= remove_params (SYMBOL_DEMANGLED_NAME (sym
));
3908 /* skip symbols that cannot match */
3909 if (strcmp (sym_name
, oload_name
) != 0)
3917 /* We have a match for an overload instance, so add SYM to the current list
3918 * of overload instances */
3919 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3921 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3922 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3924 sym_return_val
[sym_return_val_index
++] = sym
;
3925 sym_return_val
[sym_return_val_index
] = NULL
;
3928 /* Return a null-terminated list of pointers to function symbols that
3929 * match name of the supplied symbol FSYM.
3930 * This is used in finding all overloaded instances of a function name.
3931 * This has been modified from make_symbol_completion_list. */
3935 make_symbol_overload_list (struct symbol
*fsym
)
3937 register struct symbol
*sym
;
3938 register struct symtab
*s
;
3939 register struct partial_symtab
*ps
;
3940 register struct objfile
*objfile
;
3941 register struct block
*b
, *surrounding_static_block
= 0;
3943 /* The name we are completing on. */
3944 char *oload_name
= NULL
;
3945 /* Length of name. */
3946 int oload_name_len
= 0;
3948 /* Look for the symbol we are supposed to complete on. */
3950 oload_name
= remove_params (SYMBOL_DEMANGLED_NAME (fsym
));
3953 sym_return_val_size
= 1;
3954 sym_return_val
= (struct symbol
**) xmalloc (2 * sizeof (struct symbol
*));
3955 sym_return_val
[0] = fsym
;
3956 sym_return_val
[1] = NULL
;
3958 return sym_return_val
;
3960 oload_name_len
= strlen (oload_name
);
3962 sym_return_val_size
= 100;
3963 sym_return_val_index
= 0;
3964 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3965 sym_return_val
[0] = NULL
;
3967 /* Look through the partial symtabs for all symbols which begin
3968 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3970 ALL_PSYMTABS (objfile
, ps
)
3972 struct partial_symbol
**psym
;
3974 /* If the psymtab's been read in we'll get it when we search
3975 through the blockvector. */
3979 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3980 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3981 + ps
->n_global_syms
);
3984 /* If interrupted, then quit. */
3986 /* This will cause the symbol table to be read if it has not yet been */
3987 s
= PSYMTAB_TO_SYMTAB (ps
);
3990 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3991 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3992 + ps
->n_static_syms
);
3996 /* This will cause the symbol table to be read if it has not yet been */
3997 s
= PSYMTAB_TO_SYMTAB (ps
);
4001 /* Search upwards from currently selected frame (so that we can
4002 complete on local vars. */
4004 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4006 if (!BLOCK_SUPERBLOCK (b
))
4008 surrounding_static_block
= b
; /* For elimination of dups */
4011 /* Also catch fields of types defined in this places which match our
4012 text string. Only complete on types visible from current context. */
4014 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4016 overload_list_add_symbol (sym
, oload_name
);
4020 /* Go through the symtabs and check the externs and statics for
4021 symbols which match. */
4023 ALL_SYMTABS (objfile
, s
)
4026 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4027 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4029 overload_list_add_symbol (sym
, oload_name
);
4033 ALL_SYMTABS (objfile
, s
)
4036 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4037 /* Don't do this block twice. */
4038 if (b
== surrounding_static_block
)
4040 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4042 overload_list_add_symbol (sym
, oload_name
);
4048 return (sym_return_val
);
4051 /* End of overload resolution functions */
4053 struct symtabs_and_lines
4054 decode_line_spec (char *string
, int funfirstline
)
4056 struct symtabs_and_lines sals
;
4057 struct symtab_and_line cursal
;
4060 error ("Empty line specification.");
4062 /* We use whatever is set as the current source line. We do not try
4063 and get a default or it will recursively call us! */
4064 cursal
= get_current_source_symtab_and_line ();
4066 sals
= decode_line_1 (&string
, funfirstline
,
4067 cursal
.symtab
, cursal
.line
,
4071 error ("Junk at end of line specification: %s", string
);
4076 static char *name_of_main
;
4079 set_main_name (const char *name
)
4081 if (name_of_main
!= NULL
)
4083 xfree (name_of_main
);
4084 name_of_main
= NULL
;
4088 name_of_main
= xstrdup (name
);
4095 if (name_of_main
!= NULL
)
4096 return name_of_main
;
4103 _initialize_symtab (void)
4105 add_info ("variables", variables_info
,
4106 "All global and static variable names, or those matching REGEXP.");
4108 add_com ("whereis", class_info
, variables_info
,
4109 "All global and static variable names, or those matching REGEXP.");
4111 add_info ("functions", functions_info
,
4112 "All function names, or those matching REGEXP.");
4115 /* FIXME: This command has at least the following problems:
4116 1. It prints builtin types (in a very strange and confusing fashion).
4117 2. It doesn't print right, e.g. with
4118 typedef struct foo *FOO
4119 type_print prints "FOO" when we want to make it (in this situation)
4120 print "struct foo *".
4121 I also think "ptype" or "whatis" is more likely to be useful (but if
4122 there is much disagreement "info types" can be fixed). */
4123 add_info ("types", types_info
,
4124 "All type names, or those matching REGEXP.");
4126 add_info ("sources", sources_info
,
4127 "Source files in the program.");
4129 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4130 "Set a breakpoint for all functions matching REGEXP.");
4134 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4135 add_com ("lg", class_info
, variables_info
,
4136 "All global and static variable names, or those matching REGEXP.");
4139 /* Initialize the one built-in type that isn't language dependent... */
4140 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4141 "<unknown type>", (struct objfile
*) NULL
);