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
,
123 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
125 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
126 /* Signals the presence of objects compiled by HP compilers */
127 int hp_som_som_object_present
= 0;
129 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
131 static int file_matches (char *, char **, int);
133 static void print_symbol_info (namespace_enum
,
134 struct symtab
*, struct symbol
*, int, char *);
136 static void print_msymbol_info (struct minimal_symbol
*);
138 static void symtab_symbol_info (char *, namespace_enum
, int);
140 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
142 void _initialize_symtab (void);
146 /* The single non-language-specific builtin type */
147 struct type
*builtin_type_error
;
149 /* Block in which the most recently searched-for symbol was found.
150 Might be better to make this a parameter to lookup_symbol and
153 const struct block
*block_found
;
155 /* Check for a symtab of a specific name; first in symtabs, then in
156 psymtabs. *If* there is no '/' in the name, a match after a '/'
157 in the symtab filename will also work. */
160 lookup_symtab (const char *name
)
162 register struct symtab
*s
;
163 register struct partial_symtab
*ps
;
164 register struct objfile
*objfile
;
165 char *real_path
= NULL
;
166 char *full_path
= NULL
;
168 /* Here we are interested in canonicalizing an absolute path, not
169 absolutizing a relative path. */
170 if (IS_ABSOLUTE_PATH (name
))
172 full_path
= xfullpath (name
);
173 make_cleanup (xfree
, full_path
);
174 real_path
= gdb_realpath (name
);
175 make_cleanup (xfree
, real_path
);
180 /* First, search for an exact match */
182 ALL_SYMTABS (objfile
, s
)
184 if (FILENAME_CMP (name
, s
->filename
) == 0)
189 /* If the user gave us an absolute path, try to find the file in
190 this symtab and use its absolute path. */
192 if (full_path
!= NULL
)
194 const char *fp
= symtab_to_filename (s
);
195 if (FILENAME_CMP (full_path
, fp
) == 0)
201 if (real_path
!= NULL
)
203 char *rp
= gdb_realpath (symtab_to_filename (s
));
204 make_cleanup (xfree
, rp
);
205 if (FILENAME_CMP (real_path
, rp
) == 0)
212 /* Now, search for a matching tail (only if name doesn't have any dirs) */
214 if (lbasename (name
) == name
)
215 ALL_SYMTABS (objfile
, s
)
217 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
221 /* Same search rules as above apply here, but now we look thru the
224 ps
= lookup_partial_symtab (name
);
229 error ("Internal: readin %s pst for `%s' found when no symtab found.",
232 s
= PSYMTAB_TO_SYMTAB (ps
);
237 /* At this point, we have located the psymtab for this file, but
238 the conversion to a symtab has failed. This usually happens
239 when we are looking up an include file. In this case,
240 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
241 been created. So, we need to run through the symtabs again in
242 order to find the file.
243 XXX - This is a crock, and should be fixed inside of the the
244 symbol parsing routines. */
248 /* Lookup the partial symbol table of a source file named NAME.
249 *If* there is no '/' in the name, a match after a '/'
250 in the psymtab filename will also work. */
252 struct partial_symtab
*
253 lookup_partial_symtab (const char *name
)
255 register struct partial_symtab
*pst
;
256 register struct objfile
*objfile
;
257 char *full_path
= NULL
;
258 char *real_path
= NULL
;
260 /* Here we are interested in canonicalizing an absolute path, not
261 absolutizing a relative path. */
262 if (IS_ABSOLUTE_PATH (name
))
264 full_path
= xfullpath (name
);
265 make_cleanup (xfree
, full_path
);
266 real_path
= gdb_realpath (name
);
267 make_cleanup (xfree
, real_path
);
270 ALL_PSYMTABS (objfile
, pst
)
272 if (FILENAME_CMP (name
, pst
->filename
) == 0)
277 /* If the user gave us an absolute path, try to find the file in
278 this symtab and use its absolute path. */
279 if (full_path
!= NULL
)
281 if (pst
->fullname
== NULL
)
282 source_full_path_of (pst
->filename
, &pst
->fullname
);
283 if (pst
->fullname
!= NULL
284 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
290 if (real_path
!= NULL
)
293 if (pst
->fullname
== NULL
)
294 source_full_path_of (pst
->filename
, &pst
->fullname
);
295 if (pst
->fullname
!= NULL
)
297 rp
= gdb_realpath (pst
->fullname
);
298 make_cleanup (xfree
, rp
);
300 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
307 /* Now, search for a matching tail (only if name doesn't have any dirs) */
309 if (lbasename (name
) == name
)
310 ALL_PSYMTABS (objfile
, pst
)
312 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
319 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
320 full method name, which consist of the class name (from T), the unadorned
321 method name from METHOD_ID, and the signature for the specific overload,
322 specified by SIGNATURE_ID. Note that this function is g++ specific. */
325 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
327 int mangled_name_len
;
329 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
330 struct fn_field
*method
= &f
[signature_id
];
331 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
332 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
333 char *newname
= type_name_no_tag (type
);
335 /* Does the form of physname indicate that it is the full mangled name
336 of a constructor (not just the args)? */
337 int is_full_physname_constructor
;
340 int is_destructor
= is_destructor_name (physname
);
341 /* Need a new type prefix. */
342 char *const_prefix
= method
->is_const
? "C" : "";
343 char *volatile_prefix
= method
->is_volatile
? "V" : "";
345 int len
= (newname
== NULL
? 0 : strlen (newname
));
347 /* Nothing to do if physname already contains a fully mangled v3 abi name
348 or an operator name. */
349 if ((physname
[0] == '_' && physname
[1] == 'Z')
350 || is_operator_name (field_name
))
351 return xstrdup (physname
);
353 is_full_physname_constructor
= is_constructor_name (physname
);
356 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
359 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
361 if (is_destructor
|| is_full_physname_constructor
)
363 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
364 strcpy (mangled_name
, physname
);
370 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
372 else if (physname
[0] == 't' || physname
[0] == 'Q')
374 /* The physname for template and qualified methods already includes
376 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
382 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
384 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
385 + strlen (buf
) + len
+ strlen (physname
) + 1);
388 mangled_name
= (char *) xmalloc (mangled_name_len
);
390 mangled_name
[0] = '\0';
392 strcpy (mangled_name
, field_name
);
394 strcat (mangled_name
, buf
);
395 /* If the class doesn't have a name, i.e. newname NULL, then we just
396 mangle it using 0 for the length of the class. Thus it gets mangled
397 as something starting with `::' rather than `classname::'. */
399 strcat (mangled_name
, newname
);
401 strcat (mangled_name
, physname
);
402 return (mangled_name
);
406 /* Initialize the language dependent portion of a symbol
407 depending upon the language for the symbol. */
409 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
410 enum language language
)
412 gsymbol
->language
= language
;
413 if (gsymbol
->language
== language_cplus
414 || gsymbol
->language
== language_java
)
416 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
418 else if (gsymbol
->language
== language_objc
)
420 gsymbol
->language_specific
.objc_specific
.demangled_name
= NULL
;
422 /* OBSOLETE else if (SYMBOL_LANGUAGE (symbol) == language_chill) */
424 /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; */
428 memset (&gsymbol
->language_specific
, 0,
429 sizeof (gsymbol
->language_specific
));
433 /* Initialize a symbol's mangled name. */
435 /* Try to initialize the demangled name for a symbol, based on the
436 language of that symbol. If the language is set to language_auto,
437 it will attempt to find any demangling algorithm that works and
438 then set the language appropriately. If no demangling of any kind
439 is found, the language is set back to language_unknown, so we can
440 avoid doing this work again the next time we encounter the symbol.
441 Any required space to store the name is obtained from the specified
445 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
446 struct obstack
*obstack
)
448 char *mangled
= gsymbol
->name
;
449 char *demangled
= NULL
;
451 if (gsymbol
->language
== language_unknown
)
452 gsymbol
->language
= language_auto
;
453 if (gsymbol
->language
== language_cplus
454 || gsymbol
->language
== language_auto
)
457 cplus_demangle (gsymbol
->name
, DMGL_PARAMS
| DMGL_ANSI
);
458 if (demangled
!= NULL
)
460 gsymbol
->language
= language_cplus
;
461 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
462 obsavestring (demangled
, strlen (demangled
), obstack
);
467 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
470 if (gsymbol
->language
== language_java
)
473 cplus_demangle (gsymbol
->name
,
474 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
475 if (demangled
!= NULL
)
477 gsymbol
->language
= language_java
;
478 gsymbol
->language_specific
.cplus_specific
.demangled_name
=
479 obsavestring (demangled
, strlen (demangled
), obstack
);
484 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
488 /* OBSOLETE if (demangled == NULL */
489 /* OBSOLETE && (gsymbol->language == language_chill */
490 /* OBSOLETE || gsymbol->language == language_auto)) */
492 /* OBSOLETE demangled = */
493 /* OBSOLETE chill_demangle (gsymbol->name); */
494 /* OBSOLETE if (demangled != NULL) */
496 /* OBSOLETE gsymbol->language = language_chill; */
497 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = */
498 /* OBSOLETE obsavestring (demangled, strlen (demangled), obstack); */
499 /* OBSOLETE xfree (demangled); */
503 /* OBSOLETE gsymbol->language_specific.chill_specific.demangled_name = NULL; */
509 /* Return the demangled name for a symbol based on the language for
510 that symbol. If no demangled name exists, return NULL. */
512 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
514 if (gsymbol
->language
== language_cplus
515 || gsymbol
->language
== language_java
)
516 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
518 else if (gsymbol
->language
== language_objc
)
519 return gsymbol
->language_specific
.objc_specific
.demangled_name
;
524 /* OBSOLETE (SYMBOL_LANGUAGE (symbol) == language_chill */
525 /* OBSOLETE ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) */
528 /* Initialize the structure fields to zero values. */
530 init_sal (struct symtab_and_line
*sal
)
541 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
543 struct partial_symtab
*
544 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
546 register struct partial_symtab
*pst
;
547 register struct objfile
*objfile
;
548 struct minimal_symbol
*msymbol
;
550 /* If we know that this is not a text address, return failure. This is
551 necessary because we loop based on texthigh and textlow, which do
552 not include the data ranges. */
553 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
555 && (msymbol
->type
== mst_data
556 || msymbol
->type
== mst_bss
557 || msymbol
->type
== mst_abs
558 || msymbol
->type
== mst_file_data
559 || msymbol
->type
== mst_file_bss
))
562 ALL_PSYMTABS (objfile
, pst
)
564 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
566 struct partial_symtab
*tpst
;
568 /* An objfile that has its functions reordered might have
569 many partial symbol tables containing the PC, but
570 we want the partial symbol table that contains the
571 function containing the PC. */
572 if (!(objfile
->flags
& OBJF_REORDERED
) &&
573 section
== 0) /* can't validate section this way */
579 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
581 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
583 struct partial_symbol
*p
;
585 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
587 && SYMBOL_VALUE_ADDRESS (p
)
588 == SYMBOL_VALUE_ADDRESS (msymbol
))
598 /* Find which partial symtab contains PC. Return 0 if none.
599 Backward compatibility, no section */
601 struct partial_symtab
*
602 find_pc_psymtab (CORE_ADDR pc
)
604 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
607 /* Find which partial symbol within a psymtab matches PC and SECTION.
608 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
610 struct partial_symbol
*
611 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
614 struct partial_symbol
*best
= NULL
, *p
, **pp
;
618 psymtab
= find_pc_sect_psymtab (pc
, section
);
622 /* Cope with programs that start at address 0 */
623 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
625 /* Search the global symbols as well as the static symbols, so that
626 find_pc_partial_function doesn't use a minimal symbol and thus
627 cache a bad endaddr. */
628 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
629 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
630 < psymtab
->n_global_syms
);
634 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
635 && SYMBOL_CLASS (p
) == LOC_BLOCK
636 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
637 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
638 || (psymtab
->textlow
== 0
639 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
641 if (section
) /* match on a specific section */
643 fixup_psymbol_section (p
, psymtab
->objfile
);
644 if (SYMBOL_BFD_SECTION (p
) != section
)
647 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
652 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
653 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
654 < psymtab
->n_static_syms
);
658 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
659 && SYMBOL_CLASS (p
) == LOC_BLOCK
660 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
661 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
662 || (psymtab
->textlow
== 0
663 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
665 if (section
) /* match on a specific section */
667 fixup_psymbol_section (p
, psymtab
->objfile
);
668 if (SYMBOL_BFD_SECTION (p
) != section
)
671 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
679 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
680 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
682 struct partial_symbol
*
683 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
685 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
688 /* Debug symbols usually don't have section information. We need to dig that
689 out of the minimal symbols and stash that in the debug symbol. */
692 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
694 struct minimal_symbol
*msym
;
695 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
699 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
700 ginfo
->section
= SYMBOL_SECTION (msym
);
705 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
710 if (SYMBOL_BFD_SECTION (sym
))
713 fixup_section (&sym
->ginfo
, objfile
);
718 struct partial_symbol
*
719 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
724 if (SYMBOL_BFD_SECTION (psym
))
727 fixup_section (&psym
->ginfo
, objfile
);
732 /* Find the definition for a specified symbol name NAME
733 in namespace NAMESPACE, visible from lexical block BLOCK.
734 Returns the struct symbol pointer, or zero if no symbol is found.
735 If SYMTAB is non-NULL, store the symbol table in which the
736 symbol was found there, or NULL if not found.
737 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
738 NAME is a field of the current implied argument `this'. If so set
739 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
740 BLOCK_FOUND is set to the block in which NAME is found (in the case of
741 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
743 /* This function has a bunch of loops in it and it would seem to be
744 attractive to put in some QUIT's (though I'm not really sure
745 whether it can run long enough to be really important). But there
746 are a few calls for which it would appear to be bad news to quit
747 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
748 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
749 code below which can error(), but that probably doesn't affect
750 these calls since they are looking for a known variable and thus
751 can probably assume it will never hit the C++ code). */
754 lookup_symbol (const char *name
, const struct block
*block
,
755 const namespace_enum
namespace, int *is_a_field_of_this
,
756 struct symtab
**symtab
)
758 char *demangled_name
= NULL
;
759 const char *modified_name
= NULL
;
760 const char *mangled_name
= NULL
;
761 int needtofreename
= 0;
762 struct symbol
*returnval
;
764 modified_name
= name
;
766 /* If we are using C++ language, demangle the name before doing a lookup, so
767 we can always binary search. */
768 if (current_language
->la_language
== language_cplus
)
770 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
774 modified_name
= demangled_name
;
779 if (case_sensitivity
== case_sensitive_off
)
785 copy
= (char *) alloca (len
+ 1);
786 for (i
= 0; i
< len
; i
++)
787 copy
[i
] = tolower (name
[i
]);
789 modified_name
= copy
;
792 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
793 namespace, is_a_field_of_this
, symtab
);
795 xfree (demangled_name
);
800 static struct symbol
*
801 lookup_symbol_aux (const char *name
, const char *mangled_name
,
802 const struct block
*block
, const namespace_enum
namespace,
803 int *is_a_field_of_this
, struct symtab
**symtab
)
806 const struct block
*static_block
;
808 /* FIXME: carlton/2002-11-05: This variable is here so that
809 lookup_symbol_aux will sometimes return NULL after receiving a
810 NULL return value from lookup_symbol_aux_minsyms, without
811 proceeding on to the partial symtab and static variable tests. I
812 suspect that that's a bad idea. */
816 /* Search specified block and its superiors. Don't search
817 STATIC_BLOCK or GLOBAL_BLOCK. */
819 sym
= lookup_symbol_aux_local (name
, mangled_name
, block
, namespace,
820 symtab
, &static_block
);
825 /* NOTE: carlton/2002-11-05: At the time that this code was
826 #ifdeffed out, the value of 'block' was always NULL at this
827 point, hence the bemused comments below. */
829 /* FIXME: this code is never executed--block is always NULL at this
830 point. What is it trying to do, anyway? We already should have
831 checked the STATIC_BLOCK above (it is the superblock of top-level
832 blocks). Why is VAR_NAMESPACE special-cased? */
833 /* Don't need to mess with the psymtabs; if we have a block,
834 that file is read in. If we don't, then we deal later with
835 all the psymtab stuff that needs checking. */
836 /* Note (RT): The following never-executed code looks unnecessary to me also.
837 * If we change the code to use the original (passed-in)
838 * value of 'block', we could cause it to execute, but then what
839 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
840 * 'block' was already searched by the above code. And the STATIC_BLOCK's
841 * of *other* symtabs (those files not containing 'block' lexically)
842 * should not contain 'block' address-wise. So we wouldn't expect this
843 * code to find any 'sym''s that were not found above. I vote for
844 * deleting the following paragraph of code.
846 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
849 /* Find the right symtab. */
850 ALL_SYMTABS (objfile
, s
)
852 bv
= BLOCKVECTOR (s
);
853 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
854 if (BLOCK_START (b
) <= BLOCK_START (block
)
855 && BLOCK_END (b
) > BLOCK_START (block
))
857 sym
= lookup_block_symbol (b
, name
, mangled_name
, VAR_NAMESPACE
);
863 return fixup_symbol_section (sym
, objfile
);
870 /* C++: If requested to do so by the caller,
871 check to see if NAME is a field of `this'. */
872 if (is_a_field_of_this
)
874 struct value
*v
= value_of_this (0);
876 *is_a_field_of_this
= 0;
877 if (v
&& check_field (v
, name
))
879 *is_a_field_of_this
= 1;
886 /* If there's a static block to search, search it next. */
888 /* NOTE: carlton/2002-12-05: There is a question as to whether or
889 not it would be appropriate to search the current global block
890 here as well. (That's what this code used to do before the
891 is_a_field_of_this check was moved up.) On the one hand, it's
892 redundant with the lookup_symbol_aux_symtabs search that happens
893 next. On the other hand, if decode_line_1 is passed an argument
894 like filename:var, then the user presumably wants 'var' to be
895 searched for in filename. On the third hand, there shouldn't be
896 multiple global variables all of which are named 'var', and it's
897 not like decode_line_1 has ever restricted its search to only
898 global variables in a single filename. All in all, only
899 searching the static block here seems best: it's correct and it's
902 /* NOTE: carlton/2002-12-05: There's also a possible performance
903 issue here: if you usually search for global symbols in the
904 current file, then it would be slightly better to search the
905 current global block before searching all the symtabs. But there
906 are other factors that have a much greater effect on performance
907 than that one, so I don't think we should worry about that for
910 if (static_block
!= NULL
)
912 sym
= lookup_symbol_aux_block (name
, mangled_name
, static_block
,
918 /* Now search all global blocks. Do the symtab's first, then
919 check the psymtab's. If a psymtab indicates the existence
920 of the desired name as a global, then do psymtab-to-symtab
921 conversion on the fly and return the found symbol. */
923 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, mangled_name
,
930 /* Check for the possibility of the symbol being a function or
931 a mangled variable that is stored in one of the minimal symbol tables.
932 Eventually, all global symbols might be resolved in this way. */
936 sym
= lookup_symbol_aux_minsyms (name
, mangled_name
,
937 namespace, is_a_field_of_this
,
938 symtab
, &force_return
);
940 if (sym
!= NULL
|| force_return
== 1)
945 sym
= lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, mangled_name
,
950 /* Now search all static file-level symbols. Not strictly correct,
951 but more useful than an error. Do the symtabs first, then check
952 the psymtabs. If a psymtab indicates the existence of the
953 desired name as a file-level static, then do psymtab-to-symtab
954 conversion on the fly and return the found symbol. */
956 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, mangled_name
,
961 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, mangled_name
,
968 /* Check for the possibility of the symbol being a function or
969 a global variable that is stored in one of the minimal symbol tables.
970 The "minimal symbol table" is built from linker-supplied info.
972 RT: I moved this check to last, after the complete search of
973 the global (p)symtab's and static (p)symtab's. For HP-generated
974 symbol tables, this check was causing a premature exit from
975 lookup_symbol with NULL return, and thus messing up symbol lookups
976 of things like "c::f". It seems to me a check of the minimal
977 symbol table ought to be a last resort in any case. I'm vaguely
978 worried about the comment below which talks about FORTRAN routines "foo_"
979 though... is it saying we need to do the "minsym" check before
980 the static check in this case?
986 sym
= lookup_symbol_aux_minsyms (name
, mangled_name
,
987 namespace, is_a_field_of_this
,
988 symtab
, &force_return
);
990 if (sym
!= NULL
|| force_return
== 1)
1000 /* Check to see if the symbol is defined in BLOCK or its superiors.
1001 Don't search STATIC_BLOCK or GLOBAL_BLOCK. If we don't find a
1002 match, store the address of STATIC_BLOCK in static_block. */
1004 static struct symbol
*
1005 lookup_symbol_aux_local (const char *name
, const char *mangled_name
,
1006 const struct block
*block
,
1007 const namespace_enum
namespace,
1008 struct symtab
**symtab
,
1009 const struct block
**static_block
)
1013 /* Check if either no block is specified or it's a global block. */
1015 if (block
== NULL
|| BLOCK_SUPERBLOCK (block
) == NULL
)
1017 *static_block
= NULL
;
1021 while (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block
)) != NULL
)
1023 sym
= lookup_symbol_aux_block (name
, mangled_name
, block
, namespace,
1027 block
= BLOCK_SUPERBLOCK (block
);
1030 /* We've reached the static block. */
1032 *static_block
= block
;
1036 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1037 symbol, and set block_found appropriately. */
1039 static struct symbol
*
1040 lookup_symbol_aux_block (const char *name
, const char *mangled_name
,
1041 const struct block
*block
,
1042 const namespace_enum
namespace,
1043 struct symtab
**symtab
)
1046 struct objfile
*objfile
= NULL
;
1047 struct blockvector
*bv
;
1049 struct symtab
*s
= NULL
;
1051 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1054 block_found
= block
;
1057 /* Search the list of symtabs for one which contains the
1058 address of the start of this block. */
1059 ALL_SYMTABS (objfile
, s
)
1061 bv
= BLOCKVECTOR (s
);
1062 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1063 if (BLOCK_START (b
) <= BLOCK_START (block
)
1064 && BLOCK_END (b
) > BLOCK_START (block
))
1071 return fixup_symbol_section (sym
, objfile
);
1077 /* Check to see if the symbol is defined in one of the symtabs.
1078 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1079 depending on whether or not we want to search global symbols or
1082 static struct symbol
*
1083 lookup_symbol_aux_symtabs (int block_index
,
1084 const char *name
, const char *mangled_name
,
1085 const namespace_enum
namespace,
1086 struct symtab
**symtab
)
1089 struct objfile
*objfile
;
1090 struct blockvector
*bv
;
1091 const struct block
*block
;
1094 ALL_SYMTABS (objfile
, s
)
1096 bv
= BLOCKVECTOR (s
);
1097 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1098 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1101 block_found
= block
;
1104 return fixup_symbol_section (sym
, objfile
);
1111 /* Check to see if the symbol is defined in one of the partial
1112 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1113 STATIC_BLOCK, depending on whether or not we want to search global
1114 symbols or static symbols. */
1116 static struct symbol
*
1117 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1118 const char *mangled_name
,
1119 const namespace_enum
namespace,
1120 struct symtab
**symtab
)
1123 struct objfile
*objfile
;
1124 struct blockvector
*bv
;
1125 const struct block
*block
;
1126 struct partial_symtab
*ps
;
1128 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1130 ALL_PSYMTABS (objfile
, ps
)
1133 && lookup_partial_symbol (ps
, name
, psymtab_index
, namespace))
1135 s
= PSYMTAB_TO_SYMTAB (ps
);
1136 bv
= BLOCKVECTOR (s
);
1137 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1138 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1141 /* This shouldn't be necessary, but as a last resort try
1142 looking in the statics even though the psymtab claimed
1143 the symbol was global, or vice-versa. It's possible
1144 that the psymtab gets it wrong in some cases. */
1146 /* FIXME: carlton/2002-09-30: Should we really do that?
1147 If that happens, isn't it likely to be a GDB error, in
1148 which case we should fix the GDB error rather than
1149 silently dealing with it here? So I'd vote for
1150 removing the check for the symbol in the other
1152 block
= BLOCKVECTOR_BLOCK (bv
,
1153 block_index
== GLOBAL_BLOCK
?
1154 STATIC_BLOCK
: GLOBAL_BLOCK
);
1155 sym
= lookup_block_symbol (block
, name
, mangled_name
, namespace);
1157 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>).",
1158 block_index
== GLOBAL_BLOCK
? "global" : "static",
1159 name
, ps
->filename
, name
, name
);
1163 return fixup_symbol_section (sym
, objfile
);
1170 /* Check for the possibility of the symbol being a function or a
1171 mangled variable that is stored in one of the minimal symbol
1172 tables. Eventually, all global symbols might be resolved in this
1175 static struct symbol
*
1176 lookup_symbol_aux_minsyms (const char *name
,
1177 const char *mangled_name
,
1178 const namespace_enum
namespace,
1179 int *is_a_field_of_this
,
1180 struct symtab
**symtab
,
1184 struct blockvector
*bv
;
1185 const struct block
*block
;
1186 struct minimal_symbol
*msymbol
;
1189 if (namespace == VAR_NAMESPACE
)
1191 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1193 if (msymbol
!= NULL
)
1195 /* OK, we found a minimal symbol in spite of not finding any
1196 symbol. There are various possible explanations for
1197 this. One possibility is the symbol exists in code not
1198 compiled -g. Another possibility is that the 'psymtab'
1199 isn't doing its job. A third possibility, related to #2,
1200 is that we were confused by name-mangling. For instance,
1201 maybe the psymtab isn't doing its job because it only
1202 know about demangled names, but we were given a mangled
1205 /* We first use the address in the msymbol to try to locate
1206 the appropriate symtab. Note that find_pc_sect_symtab()
1207 has a side-effect of doing psymtab-to-symtab expansion,
1208 for the found symtab. */
1209 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1210 SYMBOL_BFD_SECTION (msymbol
));
1213 /* This is a function which has a symtab for its address. */
1214 bv
= BLOCKVECTOR (s
);
1215 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1217 /* This call used to pass `SYMBOL_NAME (msymbol)' as the
1218 `name' argument to lookup_block_symbol. But the name
1219 of a minimal symbol is always mangled, so that seems
1220 to be clearly the wrong thing to pass as the
1223 lookup_block_symbol (block
, name
, mangled_name
, namespace);
1224 /* We kept static functions in minimal symbol table as well as
1225 in static scope. We want to find them in the symbol table. */
1228 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1229 sym
= lookup_block_symbol (block
, name
,
1230 mangled_name
, namespace);
1233 /* NOTE: carlton/2002-12-04: The following comment was
1234 taken from a time when two versions of this function
1235 were part of the body of lookup_symbol_aux: this
1236 comment was taken from the version of the function
1237 that was #ifdef HPUXHPPA, and the comment was right
1238 before the 'return NULL' part of lookup_symbol_aux.
1239 (Hence the "Fall through and return 0" comment.)
1240 Elena did some digging into the situation for
1241 Fortran, and she reports:
1243 "I asked around (thanks to Jeff Knaggs), and I think
1244 the story for Fortran goes like this:
1246 "Apparently, in older Fortrans, '_' was not part of
1247 the user namespace. g77 attached a final '_' to
1248 procedure names as the exported symbols for linkage
1249 (foo_) , but the symbols went in the debug info just
1250 like 'foo'. The rationale behind this is not
1251 completely clear, and maybe it was done to other
1252 symbols as well, not just procedures." */
1254 /* If we get here with sym == 0, the symbol was
1255 found in the minimal symbol table
1256 but not in the symtab.
1257 Fall through and return 0 to use the msymbol
1258 definition of "foo_".
1259 (Note that outer code generally follows up a call
1260 to this routine with a call to lookup_minimal_symbol(),
1261 so a 0 return means we'll just flow into that other routine).
1263 This happens for Fortran "foo_" symbols,
1264 which are "foo" in the symtab.
1266 This can also happen if "asm" is used to make a
1267 regular symbol but not a debugging symbol, e.g.
1268 asm(".globl _main");
1272 if (symtab
!= NULL
&& sym
!= NULL
)
1275 return fixup_symbol_section (sym
, s
->objfile
);
1277 else if (MSYMBOL_TYPE (msymbol
) != mst_text
1278 && MSYMBOL_TYPE (msymbol
) != mst_file_text
1279 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
1281 /* This is a mangled variable, look it up by its
1284 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), mangled_name
,
1285 NULL
, namespace, is_a_field_of_this
,
1294 /* Look, in partial_symtab PST, for symbol NAME. Check the global
1295 symbols if GLOBAL, the static symbols if not */
1297 static struct partial_symbol
*
1298 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
1299 namespace_enum
namespace)
1301 struct partial_symbol
*temp
;
1302 struct partial_symbol
**start
, **psym
;
1303 struct partial_symbol
**top
, **bottom
, **center
;
1304 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1305 int do_linear_search
= 1;
1312 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1313 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1315 if (global
) /* This means we can use a binary search. */
1317 do_linear_search
= 0;
1319 /* Binary search. This search is guaranteed to end with center
1320 pointing at the earliest partial symbol with the correct
1321 name. At that point *all* partial symbols with that name
1322 will be checked against the correct namespace. */
1325 top
= start
+ length
- 1;
1326 while (top
> bottom
)
1328 center
= bottom
+ (top
- bottom
) / 2;
1329 if (!(center
< top
))
1330 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1331 if (!do_linear_search
1332 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1334 do_linear_search
= 1;
1336 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1342 bottom
= center
+ 1;
1345 if (!(top
== bottom
))
1346 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1348 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1349 we don't have to force a linear search on C++. Probably holds true
1350 for JAVA as well, no way to check.*/
1351 while (SYMBOL_MATCHES_NAME (*top
,name
))
1353 if (SYMBOL_NAMESPACE (*top
) == namespace)
1361 /* Can't use a binary search or else we found during the binary search that
1362 we should also do a linear search. */
1364 if (do_linear_search
)
1366 for (psym
= start
; psym
< start
+ length
; psym
++)
1368 if (namespace == SYMBOL_NAMESPACE (*psym
))
1370 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1381 /* Look up a type named NAME in the struct_namespace. The type returned
1382 must not be opaque -- i.e., must have at least one field defined
1384 This code was modelled on lookup_symbol -- the parts not relevant to looking
1385 up types were just left out. In particular it's assumed here that types
1386 are available in struct_namespace and only at file-static or global blocks. */
1390 lookup_transparent_type (const char *name
)
1392 register struct symbol
*sym
;
1393 register struct symtab
*s
= NULL
;
1394 register struct partial_symtab
*ps
;
1395 struct blockvector
*bv
;
1396 register struct objfile
*objfile
;
1397 register struct block
*block
;
1399 /* Now search all the global symbols. Do the symtab's first, then
1400 check the psymtab's. If a psymtab indicates the existence
1401 of the desired name as a global, then do psymtab-to-symtab
1402 conversion on the fly and return the found symbol. */
1404 ALL_SYMTABS (objfile
, s
)
1406 bv
= BLOCKVECTOR (s
);
1407 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1408 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1409 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1411 return SYMBOL_TYPE (sym
);
1415 ALL_PSYMTABS (objfile
, ps
)
1417 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1419 s
= PSYMTAB_TO_SYMTAB (ps
);
1420 bv
= BLOCKVECTOR (s
);
1421 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1422 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1425 /* This shouldn't be necessary, but as a last resort
1426 * try looking in the statics even though the psymtab
1427 * claimed the symbol was global. It's possible that
1428 * the psymtab gets it wrong in some cases.
1430 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1431 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1433 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1434 %s may be an inlined function, or may be a template function\n\
1435 (if a template, try specifying an instantiation: %s<type>).",
1436 name
, ps
->filename
, name
, name
);
1438 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1439 return SYMBOL_TYPE (sym
);
1443 /* Now search the static file-level symbols.
1444 Not strictly correct, but more useful than an error.
1445 Do the symtab's first, then
1446 check the psymtab's. If a psymtab indicates the existence
1447 of the desired name as a file-level static, then do psymtab-to-symtab
1448 conversion on the fly and return the found symbol.
1451 ALL_SYMTABS (objfile
, s
)
1453 bv
= BLOCKVECTOR (s
);
1454 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1455 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1456 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1458 return SYMBOL_TYPE (sym
);
1462 ALL_PSYMTABS (objfile
, ps
)
1464 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1466 s
= PSYMTAB_TO_SYMTAB (ps
);
1467 bv
= BLOCKVECTOR (s
);
1468 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1469 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1472 /* This shouldn't be necessary, but as a last resort
1473 * try looking in the globals even though the psymtab
1474 * claimed the symbol was static. It's possible that
1475 * the psymtab gets it wrong in some cases.
1477 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1478 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1480 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1481 %s may be an inlined function, or may be a template function\n\
1482 (if a template, try specifying an instantiation: %s<type>).",
1483 name
, ps
->filename
, name
, name
);
1485 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1486 return SYMBOL_TYPE (sym
);
1489 return (struct type
*) 0;
1493 /* Find the psymtab containing main(). */
1494 /* FIXME: What about languages without main() or specially linked
1495 executables that have no main() ? */
1497 struct partial_symtab
*
1498 find_main_psymtab (void)
1500 register struct partial_symtab
*pst
;
1501 register struct objfile
*objfile
;
1503 ALL_PSYMTABS (objfile
, pst
)
1505 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1513 /* Search BLOCK for symbol NAME in NAMESPACE.
1515 Note that if NAME is the demangled form of a C++ symbol, we will fail
1516 to find a match during the binary search of the non-encoded names, but
1517 for now we don't worry about the slight inefficiency of looking for
1518 a match we'll never find, since it will go pretty quick. Once the
1519 binary search terminates, we drop through and do a straight linear
1520 search on the symbols. Each symbol which is marked as being a C++
1521 symbol (language_cplus set) has both the encoded and non-encoded names
1524 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1525 particular mangled name.
1529 lookup_block_symbol (register const struct block
*block
, const char *name
,
1530 const char *mangled_name
,
1531 const namespace_enum
namespace)
1533 register int bot
, top
, inc
;
1534 register struct symbol
*sym
;
1535 register struct symbol
*sym_found
= NULL
;
1536 register int do_linear_search
= 1;
1538 if (BLOCK_HASHTABLE (block
))
1540 unsigned int hash_index
;
1541 hash_index
= msymbol_hash_iw (name
);
1542 hash_index
= hash_index
% BLOCK_BUCKETS (block
);
1543 for (sym
= BLOCK_BUCKET (block
, hash_index
); sym
; sym
= sym
->hash_next
)
1545 if (SYMBOL_NAMESPACE (sym
) == namespace
1547 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1548 : SYMBOL_MATCHES_NAME (sym
, name
)))
1554 /* If the blocks's symbols were sorted, start with a binary search. */
1556 if (BLOCK_SHOULD_SORT (block
))
1558 /* Reset the linear search flag so if the binary search fails, we
1559 won't do the linear search once unless we find some reason to
1562 do_linear_search
= 0;
1563 top
= BLOCK_NSYMS (block
);
1566 /* Advance BOT to not far before the first symbol whose name is NAME. */
1570 inc
= (top
- bot
+ 1);
1571 /* No need to keep binary searching for the last few bits worth. */
1576 inc
= (inc
>> 1) + bot
;
1577 sym
= BLOCK_SYM (block
, inc
);
1578 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1580 do_linear_search
= 1;
1582 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1586 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1590 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1600 /* Now scan forward until we run out of symbols, find one whose
1601 name is greater than NAME, or find one we want. If there is
1602 more than one symbol with the right name and namespace, we
1603 return the first one; I believe it is now impossible for us
1604 to encounter two symbols with the same name and namespace
1605 here, because blocks containing argument symbols are no
1606 longer sorted. The exception is for C++, where multiple functions
1607 (cloned constructors / destructors, in particular) can have
1608 the same demangled name. So if we have a particular
1609 mangled name to match, try to do so. */
1611 top
= BLOCK_NSYMS (block
);
1614 sym
= BLOCK_SYM (block
, bot
);
1615 if (SYMBOL_NAMESPACE (sym
) == namespace
1617 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1618 : SYMBOL_MATCHES_NAME (sym
, name
)))
1622 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1630 /* Here if block isn't sorted, or we fail to find a match during the
1631 binary search above. If during the binary search above, we find a
1632 symbol which is a Java symbol, then we have re-enabled the linear
1633 search flag which was reset when starting the binary search.
1635 This loop is equivalent to the loop above, but hacked greatly for speed.
1637 Note that parameter symbols do not always show up last in the
1638 list; this loop makes sure to take anything else other than
1639 parameter symbols first; it only uses parameter symbols as a
1640 last resort. Note that this only takes up extra computation
1643 if (do_linear_search
)
1645 top
= BLOCK_NSYMS (block
);
1649 sym
= BLOCK_SYM (block
, bot
);
1650 if (SYMBOL_NAMESPACE (sym
) == namespace
1652 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1653 : SYMBOL_MATCHES_NAME (sym
, name
)))
1655 /* If SYM has aliases, then use any alias that is active
1656 at the current PC. If no alias is active at the current
1657 PC, then use the main symbol.
1659 ?!? Is checking the current pc correct? Is this routine
1660 ever called to look up a symbol from another context?
1662 FIXME: No, it's not correct. If someone sets a
1663 conditional breakpoint at an address, then the
1664 breakpoint's `struct expression' should refer to the
1665 `struct symbol' appropriate for the breakpoint's
1666 address, which may not be the PC.
1668 Even if it were never called from another context,
1669 it's totally bizarre for lookup_symbol's behavior to
1670 depend on the value of the inferior's current PC. We
1671 should pass in the appropriate PC as well as the
1672 block. The interface to lookup_symbol should change
1673 to require the caller to provide a PC. */
1675 if (SYMBOL_ALIASES (sym
))
1676 sym
= find_active_alias (sym
, read_pc ());
1679 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1680 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1681 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1682 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1683 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1684 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1692 return (sym_found
); /* Will be NULL if not found. */
1695 /* Given a main symbol SYM and ADDR, search through the alias
1696 list to determine if an alias is active at ADDR and return
1699 If no alias is active, then return SYM. */
1701 static struct symbol
*
1702 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1704 struct range_list
*r
;
1705 struct alias_list
*aliases
;
1707 /* If we have aliases, check them first. */
1708 aliases
= SYMBOL_ALIASES (sym
);
1712 if (!SYMBOL_RANGES (aliases
->sym
))
1713 return aliases
->sym
;
1714 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1716 if (r
->start
<= addr
&& r
->end
> addr
)
1717 return aliases
->sym
;
1719 aliases
= aliases
->next
;
1722 /* Nothing found, return the main symbol. */
1727 /* Return the symbol for the function which contains a specified
1728 lexical block, described by a struct block BL. */
1731 block_function (struct block
*bl
)
1733 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1734 bl
= BLOCK_SUPERBLOCK (bl
);
1736 return BLOCK_FUNCTION (bl
);
1739 /* Find the symtab associated with PC and SECTION. Look through the
1740 psymtabs and read in another symtab if necessary. */
1743 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1745 register struct block
*b
;
1746 struct blockvector
*bv
;
1747 register struct symtab
*s
= NULL
;
1748 register struct symtab
*best_s
= NULL
;
1749 register struct partial_symtab
*ps
;
1750 register struct objfile
*objfile
;
1751 CORE_ADDR distance
= 0;
1752 struct minimal_symbol
*msymbol
;
1754 /* If we know that this is not a text address, return failure. This is
1755 necessary because we loop based on the block's high and low code
1756 addresses, which do not include the data ranges, and because
1757 we call find_pc_sect_psymtab which has a similar restriction based
1758 on the partial_symtab's texthigh and textlow. */
1759 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1761 && (msymbol
->type
== mst_data
1762 || msymbol
->type
== mst_bss
1763 || msymbol
->type
== mst_abs
1764 || msymbol
->type
== mst_file_data
1765 || msymbol
->type
== mst_file_bss
))
1768 /* Search all symtabs for the one whose file contains our address, and which
1769 is the smallest of all the ones containing the address. This is designed
1770 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1771 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1772 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1774 This happens for native ecoff format, where code from included files
1775 gets its own symtab. The symtab for the included file should have
1776 been read in already via the dependency mechanism.
1777 It might be swifter to create several symtabs with the same name
1778 like xcoff does (I'm not sure).
1780 It also happens for objfiles that have their functions reordered.
1781 For these, the symtab we are looking for is not necessarily read in. */
1783 ALL_SYMTABS (objfile
, s
)
1785 bv
= BLOCKVECTOR (s
);
1786 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1788 if (BLOCK_START (b
) <= pc
1789 && BLOCK_END (b
) > pc
1791 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1793 /* For an objfile that has its functions reordered,
1794 find_pc_psymtab will find the proper partial symbol table
1795 and we simply return its corresponding symtab. */
1796 /* In order to better support objfiles that contain both
1797 stabs and coff debugging info, we continue on if a psymtab
1799 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1801 ps
= find_pc_sect_psymtab (pc
, section
);
1803 return PSYMTAB_TO_SYMTAB (ps
);
1808 struct symbol
*sym
= NULL
;
1810 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
1812 fixup_symbol_section (sym
, objfile
);
1813 if (section
== SYMBOL_BFD_SECTION (sym
))
1816 if ((i
>= BLOCK_BUCKETS (b
)) && (sym
== NULL
))
1817 continue; /* no symbol in this symtab matches section */
1819 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1828 ps
= find_pc_sect_psymtab (pc
, section
);
1832 /* Might want to error() here (in case symtab is corrupt and
1833 will cause a core dump), but maybe we can successfully
1834 continue, so let's not. */
1836 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1838 s
= PSYMTAB_TO_SYMTAB (ps
);
1843 /* Find the symtab associated with PC. Look through the psymtabs and
1844 read in another symtab if necessary. Backward compatibility, no section */
1847 find_pc_symtab (CORE_ADDR pc
)
1849 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1853 /* Find the source file and line number for a given PC value and SECTION.
1854 Return a structure containing a symtab pointer, a line number,
1855 and a pc range for the entire source line.
1856 The value's .pc field is NOT the specified pc.
1857 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1858 use the line that ends there. Otherwise, in that case, the line
1859 that begins there is used. */
1861 /* The big complication here is that a line may start in one file, and end just
1862 before the start of another file. This usually occurs when you #include
1863 code in the middle of a subroutine. To properly find the end of a line's PC
1864 range, we must search all symtabs associated with this compilation unit, and
1865 find the one whose first PC is closer than that of the next line in this
1868 /* If it's worth the effort, we could be using a binary search. */
1870 struct symtab_and_line
1871 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1874 register struct linetable
*l
;
1877 register struct linetable_entry
*item
;
1878 struct symtab_and_line val
;
1879 struct blockvector
*bv
;
1880 struct minimal_symbol
*msymbol
;
1881 struct minimal_symbol
*mfunsym
;
1883 /* Info on best line seen so far, and where it starts, and its file. */
1885 struct linetable_entry
*best
= NULL
;
1886 CORE_ADDR best_end
= 0;
1887 struct symtab
*best_symtab
= 0;
1889 /* Store here the first line number
1890 of a file which contains the line at the smallest pc after PC.
1891 If we don't find a line whose range contains PC,
1892 we will use a line one less than this,
1893 with a range from the start of that file to the first line's pc. */
1894 struct linetable_entry
*alt
= NULL
;
1895 struct symtab
*alt_symtab
= 0;
1897 /* Info on best line seen in this file. */
1899 struct linetable_entry
*prev
;
1901 /* If this pc is not from the current frame,
1902 it is the address of the end of a call instruction.
1903 Quite likely that is the start of the following statement.
1904 But what we want is the statement containing the instruction.
1905 Fudge the pc to make sure we get that. */
1907 init_sal (&val
); /* initialize to zeroes */
1909 /* It's tempting to assume that, if we can't find debugging info for
1910 any function enclosing PC, that we shouldn't search for line
1911 number info, either. However, GAS can emit line number info for
1912 assembly files --- very helpful when debugging hand-written
1913 assembly code. In such a case, we'd have no debug info for the
1914 function, but we would have line info. */
1919 /* elz: added this because this function returned the wrong
1920 information if the pc belongs to a stub (import/export)
1921 to call a shlib function. This stub would be anywhere between
1922 two functions in the target, and the line info was erroneously
1923 taken to be the one of the line before the pc.
1925 /* RT: Further explanation:
1927 * We have stubs (trampolines) inserted between procedures.
1929 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1930 * exists in the main image.
1932 * In the minimal symbol table, we have a bunch of symbols
1933 * sorted by start address. The stubs are marked as "trampoline",
1934 * the others appear as text. E.g.:
1936 * Minimal symbol table for main image
1937 * main: code for main (text symbol)
1938 * shr1: stub (trampoline symbol)
1939 * foo: code for foo (text symbol)
1941 * Minimal symbol table for "shr1" image:
1943 * shr1: code for shr1 (text symbol)
1946 * So the code below is trying to detect if we are in the stub
1947 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1948 * and if found, do the symbolization from the real-code address
1949 * rather than the stub address.
1951 * Assumptions being made about the minimal symbol table:
1952 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1953 * if we're really in the trampoline. If we're beyond it (say
1954 * we're in "foo" in the above example), it'll have a closer
1955 * symbol (the "foo" text symbol for example) and will not
1956 * return the trampoline.
1957 * 2. lookup_minimal_symbol_text() will find a real text symbol
1958 * corresponding to the trampoline, and whose address will
1959 * be different than the trampoline address. I put in a sanity
1960 * check for the address being the same, to avoid an
1961 * infinite recursion.
1963 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1964 if (msymbol
!= NULL
)
1965 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1967 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1968 if (mfunsym
== NULL
)
1969 /* I eliminated this warning since it is coming out
1970 * in the following situation:
1971 * gdb shmain // test program with shared libraries
1972 * (gdb) break shr1 // function in shared lib
1973 * Warning: In stub for ...
1974 * In the above situation, the shared lib is not loaded yet,
1975 * so of course we can't find the real func/line info,
1976 * but the "break" still works, and the warning is annoying.
1977 * So I commented out the warning. RT */
1978 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1980 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1981 /* Avoid infinite recursion */
1982 /* See above comment about why warning is commented out */
1983 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1986 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1990 s
= find_pc_sect_symtab (pc
, section
);
1993 /* if no symbol information, return previous pc */
2000 bv
= BLOCKVECTOR (s
);
2002 /* Look at all the symtabs that share this blockvector.
2003 They all have the same apriori range, that we found was right;
2004 but they have different line tables. */
2006 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2008 /* Find the best line in this symtab. */
2015 /* I think len can be zero if the symtab lacks line numbers
2016 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2017 I'm not sure which, and maybe it depends on the symbol
2023 item
= l
->item
; /* Get first line info */
2025 /* Is this file's first line closer than the first lines of other files?
2026 If so, record this file, and its first line, as best alternate. */
2027 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2033 for (i
= 0; i
< len
; i
++, item
++)
2035 /* Leave prev pointing to the linetable entry for the last line
2036 that started at or before PC. */
2043 /* At this point, prev points at the line whose start addr is <= pc, and
2044 item points at the next line. If we ran off the end of the linetable
2045 (pc >= start of the last line), then prev == item. If pc < start of
2046 the first line, prev will not be set. */
2048 /* Is this file's best line closer than the best in the other files?
2049 If so, record this file, and its best line, as best so far. */
2051 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
2056 /* Discard BEST_END if it's before the PC of the current BEST. */
2057 if (best_end
<= best
->pc
)
2061 /* If another line (denoted by ITEM) is in the linetable and its
2062 PC is after BEST's PC, but before the current BEST_END, then
2063 use ITEM's PC as the new best_end. */
2064 if (best
&& i
< len
&& item
->pc
> best
->pc
2065 && (best_end
== 0 || best_end
> item
->pc
))
2066 best_end
= item
->pc
;
2072 { /* If we didn't find any line # info, just
2078 val
.symtab
= alt_symtab
;
2079 val
.line
= alt
->line
- 1;
2081 /* Don't return line 0, that means that we didn't find the line. */
2085 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2089 else if (best
->line
== 0)
2091 /* If our best fit is in a range of PC's for which no line
2092 number info is available (line number is zero) then we didn't
2093 find any valid line information. */
2098 val
.symtab
= best_symtab
;
2099 val
.line
= best
->line
;
2101 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2106 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2108 val
.section
= section
;
2112 /* Backward compatibility (no section) */
2114 struct symtab_and_line
2115 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2119 section
= find_pc_overlay (pc
);
2120 if (pc_in_unmapped_range (pc
, section
))
2121 pc
= overlay_mapped_address (pc
, section
);
2122 return find_pc_sect_line (pc
, section
, notcurrent
);
2125 /* Find line number LINE in any symtab whose name is the same as
2128 If found, return the symtab that contains the linetable in which it was
2129 found, set *INDEX to the index in the linetable of the best entry
2130 found, and set *EXACT_MATCH nonzero if the value returned is an
2133 If not found, return NULL. */
2136 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2140 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2144 struct linetable
*best_linetable
;
2145 struct symtab
*best_symtab
;
2147 /* First try looking it up in the given symtab. */
2148 best_linetable
= LINETABLE (symtab
);
2149 best_symtab
= symtab
;
2150 best_index
= find_line_common (best_linetable
, line
, &exact
);
2151 if (best_index
< 0 || !exact
)
2153 /* Didn't find an exact match. So we better keep looking for
2154 another symtab with the same name. In the case of xcoff,
2155 multiple csects for one source file (produced by IBM's FORTRAN
2156 compiler) produce multiple symtabs (this is unavoidable
2157 assuming csects can be at arbitrary places in memory and that
2158 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2160 /* BEST is the smallest linenumber > LINE so far seen,
2161 or 0 if none has been seen so far.
2162 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2165 struct objfile
*objfile
;
2168 if (best_index
>= 0)
2169 best
= best_linetable
->item
[best_index
].line
;
2173 ALL_SYMTABS (objfile
, s
)
2175 struct linetable
*l
;
2178 if (!STREQ (symtab
->filename
, s
->filename
))
2181 ind
= find_line_common (l
, line
, &exact
);
2191 if (best
== 0 || l
->item
[ind
].line
< best
)
2193 best
= l
->item
[ind
].line
;
2206 *index
= best_index
;
2208 *exact_match
= exact
;
2213 /* Set the PC value for a given source file and line number and return true.
2214 Returns zero for invalid line number (and sets the PC to 0).
2215 The source file is specified with a struct symtab. */
2218 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2220 struct linetable
*l
;
2227 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2230 l
= LINETABLE (symtab
);
2231 *pc
= l
->item
[ind
].pc
;
2238 /* Find the range of pc values in a line.
2239 Store the starting pc of the line into *STARTPTR
2240 and the ending pc (start of next line) into *ENDPTR.
2241 Returns 1 to indicate success.
2242 Returns 0 if could not find the specified line. */
2245 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2248 CORE_ADDR startaddr
;
2249 struct symtab_and_line found_sal
;
2252 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2255 /* This whole function is based on address. For example, if line 10 has
2256 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2257 "info line *0x123" should say the line goes from 0x100 to 0x200
2258 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2259 This also insures that we never give a range like "starts at 0x134
2260 and ends at 0x12c". */
2262 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2263 if (found_sal
.line
!= sal
.line
)
2265 /* The specified line (sal) has zero bytes. */
2266 *startptr
= found_sal
.pc
;
2267 *endptr
= found_sal
.pc
;
2271 *startptr
= found_sal
.pc
;
2272 *endptr
= found_sal
.end
;
2277 /* Given a line table and a line number, return the index into the line
2278 table for the pc of the nearest line whose number is >= the specified one.
2279 Return -1 if none is found. The value is >= 0 if it is an index.
2281 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2284 find_line_common (register struct linetable
*l
, register int lineno
,
2290 /* BEST is the smallest linenumber > LINENO so far seen,
2291 or 0 if none has been seen so far.
2292 BEST_INDEX identifies the item for it. */
2294 int best_index
= -1;
2303 for (i
= 0; i
< len
; i
++)
2305 register struct linetable_entry
*item
= &(l
->item
[i
]);
2307 if (item
->line
== lineno
)
2309 /* Return the first (lowest address) entry which matches. */
2314 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2321 /* If we got here, we didn't get an exact match. */
2328 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2330 struct symtab_and_line sal
;
2331 sal
= find_pc_line (pc
, 0);
2334 return sal
.symtab
!= 0;
2337 /* Given a function symbol SYM, find the symtab and line for the start
2339 If the argument FUNFIRSTLINE is nonzero, we want the first line
2340 of real code inside the function. */
2342 struct symtab_and_line
2343 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2346 struct symtab_and_line sal
;
2348 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2349 fixup_symbol_section (sym
, NULL
);
2351 { /* skip "first line" of function (which is actually its prologue) */
2352 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2353 /* If function is in an unmapped overlay, use its unmapped LMA
2354 address, so that SKIP_PROLOGUE has something unique to work on */
2355 if (section_is_overlay (section
) &&
2356 !section_is_mapped (section
))
2357 pc
= overlay_unmapped_address (pc
, section
);
2359 pc
+= FUNCTION_START_OFFSET
;
2360 pc
= SKIP_PROLOGUE (pc
);
2362 /* For overlays, map pc back into its mapped VMA range */
2363 pc
= overlay_mapped_address (pc
, section
);
2365 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2367 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2368 /* Convex: no need to suppress code on first line, if any */
2371 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2372 line is still part of the same function. */
2374 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2375 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2377 /* First pc of next line */
2379 /* Recalculate the line number (might not be N+1). */
2380 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2388 /* If P is of the form "operator[ \t]+..." where `...' is
2389 some legitimate operator text, return a pointer to the
2390 beginning of the substring of the operator text.
2391 Otherwise, return "". */
2393 operator_chars (char *p
, char **end
)
2396 if (strncmp (p
, "operator", 8))
2400 /* Don't get faked out by `operator' being part of a longer
2402 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2405 /* Allow some whitespace between `operator' and the operator symbol. */
2406 while (*p
== ' ' || *p
== '\t')
2409 /* Recognize 'operator TYPENAME'. */
2411 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2413 register char *q
= p
+ 1;
2414 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2423 case '\\': /* regexp quoting */
2426 if (p
[2] == '=') /* 'operator\*=' */
2428 else /* 'operator\*' */
2432 else if (p
[1] == '[')
2435 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2436 else if (p
[2] == '\\' && p
[3] == ']')
2438 *end
= p
+ 4; /* 'operator\[\]' */
2442 error ("nothing is allowed between '[' and ']'");
2446 /* Gratuitous qoute: skip it and move on. */
2468 if (p
[0] == '-' && p
[1] == '>')
2470 /* Struct pointer member operator 'operator->'. */
2473 *end
= p
+ 3; /* 'operator->*' */
2476 else if (p
[2] == '\\')
2478 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2483 *end
= p
+ 2; /* 'operator->' */
2487 if (p
[1] == '=' || p
[1] == p
[0])
2498 error ("`operator ()' must be specified without whitespace in `()'");
2503 error ("`operator ?:' must be specified without whitespace in `?:'");
2508 error ("`operator []' must be specified without whitespace in `[]'");
2512 error ("`operator %s' not supported", p
);
2521 /* If FILE is not already in the table of files, return zero;
2522 otherwise return non-zero. Optionally add FILE to the table if ADD
2523 is non-zero. If *FIRST is non-zero, forget the old table
2526 filename_seen (const char *file
, int add
, int *first
)
2528 /* Table of files seen so far. */
2529 static const char **tab
= NULL
;
2530 /* Allocated size of tab in elements.
2531 Start with one 256-byte block (when using GNU malloc.c).
2532 24 is the malloc overhead when range checking is in effect. */
2533 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2534 /* Current size of tab in elements. */
2535 static int tab_cur_size
;
2541 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2545 /* Is FILE in tab? */
2546 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2547 if (strcmp (*p
, file
) == 0)
2550 /* No; maybe add it to tab. */
2553 if (tab_cur_size
== tab_alloc_size
)
2555 tab_alloc_size
*= 2;
2556 tab
= (const char **) xrealloc ((char *) tab
,
2557 tab_alloc_size
* sizeof (*tab
));
2559 tab
[tab_cur_size
++] = file
;
2565 /* Slave routine for sources_info. Force line breaks at ,'s.
2566 NAME is the name to print and *FIRST is nonzero if this is the first
2567 name printed. Set *FIRST to zero. */
2569 output_source_filename (char *name
, int *first
)
2571 /* Since a single source file can result in several partial symbol
2572 tables, we need to avoid printing it more than once. Note: if
2573 some of the psymtabs are read in and some are not, it gets
2574 printed both under "Source files for which symbols have been
2575 read" and "Source files for which symbols will be read in on
2576 demand". I consider this a reasonable way to deal with the
2577 situation. I'm not sure whether this can also happen for
2578 symtabs; it doesn't hurt to check. */
2580 /* Was NAME already seen? */
2581 if (filename_seen (name
, 1, first
))
2583 /* Yes; don't print it again. */
2586 /* No; print it and reset *FIRST. */
2593 printf_filtered (", ");
2597 fputs_filtered (name
, gdb_stdout
);
2601 sources_info (char *ignore
, int from_tty
)
2603 register struct symtab
*s
;
2604 register struct partial_symtab
*ps
;
2605 register struct objfile
*objfile
;
2608 if (!have_full_symbols () && !have_partial_symbols ())
2610 error ("No symbol table is loaded. Use the \"file\" command.");
2613 printf_filtered ("Source files for which symbols have been read in:\n\n");
2616 ALL_SYMTABS (objfile
, s
)
2618 output_source_filename (s
->filename
, &first
);
2620 printf_filtered ("\n\n");
2622 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2625 ALL_PSYMTABS (objfile
, ps
)
2629 output_source_filename (ps
->filename
, &first
);
2632 printf_filtered ("\n");
2636 file_matches (char *file
, char *files
[], int nfiles
)
2640 if (file
!= NULL
&& nfiles
!= 0)
2642 for (i
= 0; i
< nfiles
; i
++)
2644 if (strcmp (files
[i
], lbasename (file
)) == 0)
2648 else if (nfiles
== 0)
2653 /* Free any memory associated with a search. */
2655 free_search_symbols (struct symbol_search
*symbols
)
2657 struct symbol_search
*p
;
2658 struct symbol_search
*next
;
2660 for (p
= symbols
; p
!= NULL
; p
= next
)
2668 do_free_search_symbols_cleanup (void *symbols
)
2670 free_search_symbols (symbols
);
2674 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2676 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2679 /* Helper function for sort_search_symbols and qsort. Can only
2680 sort symbols, not minimal symbols. */
2682 compare_search_syms (const void *sa
, const void *sb
)
2684 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2685 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2687 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a
)->symbol
),
2688 SYMBOL_SOURCE_NAME ((*sym_b
)->symbol
));
2691 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2692 prevtail where it is, but update its next pointer to point to
2693 the first of the sorted symbols. */
2694 static struct symbol_search
*
2695 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2697 struct symbol_search
**symbols
, *symp
, *old_next
;
2700 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2702 symp
= prevtail
->next
;
2703 for (i
= 0; i
< nfound
; i
++)
2708 /* Generally NULL. */
2711 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2712 compare_search_syms
);
2715 for (i
= 0; i
< nfound
; i
++)
2717 symp
->next
= symbols
[i
];
2720 symp
->next
= old_next
;
2726 /* Search the symbol table for matches to the regular expression REGEXP,
2727 returning the results in *MATCHES.
2729 Only symbols of KIND are searched:
2730 FUNCTIONS_NAMESPACE - search all functions
2731 TYPES_NAMESPACE - search all type names
2732 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2733 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2734 and constants (enums)
2736 free_search_symbols should be called when *MATCHES is no longer needed.
2738 The results are sorted locally; each symtab's global and static blocks are
2739 separately alphabetized.
2742 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2743 struct symbol_search
**matches
)
2745 register struct symtab
*s
;
2746 register struct partial_symtab
*ps
;
2747 register struct blockvector
*bv
;
2748 struct blockvector
*prev_bv
= 0;
2749 register struct block
*b
;
2752 register struct symbol
*sym
;
2753 struct partial_symbol
**psym
;
2754 struct objfile
*objfile
;
2755 struct minimal_symbol
*msymbol
;
2758 static enum minimal_symbol_type types
[]
2760 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2761 static enum minimal_symbol_type types2
[]
2763 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2764 static enum minimal_symbol_type types3
[]
2766 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2767 static enum minimal_symbol_type types4
[]
2769 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2770 enum minimal_symbol_type ourtype
;
2771 enum minimal_symbol_type ourtype2
;
2772 enum minimal_symbol_type ourtype3
;
2773 enum minimal_symbol_type ourtype4
;
2774 struct symbol_search
*sr
;
2775 struct symbol_search
*psr
;
2776 struct symbol_search
*tail
;
2777 struct cleanup
*old_chain
= NULL
;
2779 if (kind
< VARIABLES_NAMESPACE
)
2780 error ("must search on specific namespace");
2782 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2783 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2784 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2785 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2787 sr
= *matches
= NULL
;
2792 /* Make sure spacing is right for C++ operators.
2793 This is just a courtesy to make the matching less sensitive
2794 to how many spaces the user leaves between 'operator'
2795 and <TYPENAME> or <OPERATOR>. */
2797 char *opname
= operator_chars (regexp
, &opend
);
2800 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2801 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2803 /* There should 1 space between 'operator' and 'TYPENAME'. */
2804 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2809 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2810 if (opname
[-1] == ' ')
2813 /* If wrong number of spaces, fix it. */
2816 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2817 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2822 if (0 != (val
= re_comp (regexp
)))
2823 error ("Invalid regexp (%s): %s", val
, regexp
);
2826 /* Search through the partial symtabs *first* for all symbols
2827 matching the regexp. That way we don't have to reproduce all of
2828 the machinery below. */
2830 ALL_PSYMTABS (objfile
, ps
)
2832 struct partial_symbol
**bound
, **gbound
, **sbound
;
2838 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2839 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2842 /* Go through all of the symbols stored in a partial
2843 symtab in one loop. */
2844 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2849 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2851 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2862 /* If it would match (logic taken from loop below)
2863 load the file and go on to the next one */
2864 if (file_matches (ps
->filename
, files
, nfiles
)
2865 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2866 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2867 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2868 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2869 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2870 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2872 PSYMTAB_TO_SYMTAB (ps
);
2880 /* Here, we search through the minimal symbol tables for functions
2881 and variables that match, and force their symbols to be read.
2882 This is in particular necessary for demangled variable names,
2883 which are no longer put into the partial symbol tables.
2884 The symbol will then be found during the scan of symtabs below.
2886 For functions, find_pc_symtab should succeed if we have debug info
2887 for the function, for variables we have to call lookup_symbol
2888 to determine if the variable has debug info.
2889 If the lookup fails, set found_misc so that we will rescan to print
2890 any matching symbols without debug info.
2893 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2895 ALL_MSYMBOLS (objfile
, msymbol
)
2897 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2898 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2899 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2900 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2902 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2904 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2906 if (kind
== FUNCTIONS_NAMESPACE
2907 || lookup_symbol (SYMBOL_NAME (msymbol
),
2908 (struct block
*) NULL
,
2910 0, (struct symtab
**) NULL
) == NULL
)
2918 ALL_SYMTABS (objfile
, s
)
2920 bv
= BLOCKVECTOR (s
);
2921 /* Often many files share a blockvector.
2922 Scan each blockvector only once so that
2923 we don't get every symbol many times.
2924 It happens that the first symtab in the list
2925 for any given blockvector is the main file. */
2927 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2929 struct symbol_search
*prevtail
= tail
;
2931 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2932 ALL_BLOCK_SYMBOLS (b
, j
, sym
)
2935 if (file_matches (s
->filename
, files
, nfiles
)
2936 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2937 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2938 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2939 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2940 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2941 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2942 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2945 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2949 psr
->msymbol
= NULL
;
2961 if (prevtail
== NULL
)
2963 struct symbol_search dummy
;
2966 tail
= sort_search_symbols (&dummy
, nfound
);
2969 old_chain
= make_cleanup_free_search_symbols (sr
);
2972 tail
= sort_search_symbols (prevtail
, nfound
);
2978 /* If there are no eyes, avoid all contact. I mean, if there are
2979 no debug symbols, then print directly from the msymbol_vector. */
2981 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2983 ALL_MSYMBOLS (objfile
, msymbol
)
2985 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2986 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2987 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2988 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2990 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2992 /* Functions: Look up by address. */
2993 if (kind
!= FUNCTIONS_NAMESPACE
||
2994 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2996 /* Variables/Absolutes: Look up by name */
2997 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2998 (struct block
*) NULL
, VAR_NAMESPACE
,
2999 0, (struct symtab
**) NULL
) == NULL
)
3002 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3004 psr
->msymbol
= msymbol
;
3011 old_chain
= make_cleanup_free_search_symbols (sr
);
3025 discard_cleanups (old_chain
);
3028 /* Helper function for symtab_symbol_info, this function uses
3029 the data returned from search_symbols() to print information
3030 regarding the match to gdb_stdout.
3033 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3034 int block
, char *last
)
3036 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3038 fputs_filtered ("\nFile ", gdb_stdout
);
3039 fputs_filtered (s
->filename
, gdb_stdout
);
3040 fputs_filtered (":\n", gdb_stdout
);
3043 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3044 printf_filtered ("static ");
3046 /* Typedef that is not a C++ class */
3047 if (kind
== TYPES_NAMESPACE
3048 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3049 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3050 /* variable, func, or typedef-that-is-c++-class */
3051 else if (kind
< TYPES_NAMESPACE
||
3052 (kind
== TYPES_NAMESPACE
&&
3053 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3055 type_print (SYMBOL_TYPE (sym
),
3056 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3057 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3060 printf_filtered (";\n");
3064 /* This help function for symtab_symbol_info() prints information
3065 for non-debugging symbols to gdb_stdout.
3068 print_msymbol_info (struct minimal_symbol
*msymbol
)
3072 if (TARGET_ADDR_BIT
<= 32)
3073 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3074 & (CORE_ADDR
) 0xffffffff,
3077 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3079 printf_filtered ("%s %s\n",
3080 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
3083 /* This is the guts of the commands "info functions", "info types", and
3084 "info variables". It calls search_symbols to find all matches and then
3085 print_[m]symbol_info to print out some useful information about the
3089 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
3091 static char *classnames
[]
3093 {"variable", "function", "type", "method"};
3094 struct symbol_search
*symbols
;
3095 struct symbol_search
*p
;
3096 struct cleanup
*old_chain
;
3097 char *last_filename
= NULL
;
3100 /* must make sure that if we're interrupted, symbols gets freed */
3101 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3102 old_chain
= make_cleanup_free_search_symbols (symbols
);
3104 printf_filtered (regexp
3105 ? "All %ss matching regular expression \"%s\":\n"
3106 : "All defined %ss:\n",
3107 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
3109 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3113 if (p
->msymbol
!= NULL
)
3117 printf_filtered ("\nNon-debugging symbols:\n");
3120 print_msymbol_info (p
->msymbol
);
3124 print_symbol_info (kind
,
3129 last_filename
= p
->symtab
->filename
;
3133 do_cleanups (old_chain
);
3137 variables_info (char *regexp
, int from_tty
)
3139 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3143 functions_info (char *regexp
, int from_tty
)
3145 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3150 types_info (char *regexp
, int from_tty
)
3152 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3155 /* Breakpoint all functions matching regular expression. */
3158 rbreak_command_wrapper (char *regexp
, int from_tty
)
3160 rbreak_command (regexp
, from_tty
);
3164 rbreak_command (char *regexp
, int from_tty
)
3166 struct symbol_search
*ss
;
3167 struct symbol_search
*p
;
3168 struct cleanup
*old_chain
;
3170 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3171 old_chain
= make_cleanup_free_search_symbols (ss
);
3173 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3175 if (p
->msymbol
== NULL
)
3177 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3178 + strlen (SYMBOL_NAME (p
->symbol
))
3180 strcpy (string
, p
->symtab
->filename
);
3181 strcat (string
, ":'");
3182 strcat (string
, SYMBOL_NAME (p
->symbol
));
3183 strcat (string
, "'");
3184 break_command (string
, from_tty
);
3185 print_symbol_info (FUNCTIONS_NAMESPACE
,
3189 p
->symtab
->filename
);
3193 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3194 printf_filtered ("<function, no debug info> %s;\n",
3195 SYMBOL_SOURCE_NAME (p
->msymbol
));
3199 do_cleanups (old_chain
);
3203 /* Return Nonzero if block a is lexically nested within block b,
3204 or if a and b have the same pc range.
3205 Return zero otherwise. */
3207 contained_in (struct block
*a
, struct block
*b
)
3211 return BLOCK_START (a
) >= BLOCK_START (b
)
3212 && BLOCK_END (a
) <= BLOCK_END (b
);
3216 /* Helper routine for make_symbol_completion_list. */
3218 static int return_val_size
;
3219 static int return_val_index
;
3220 static char **return_val
;
3222 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3224 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3225 /* Put only the mangled name on the list. */ \
3226 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3227 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3228 completion_list_add_name \
3229 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3231 completion_list_add_name \
3232 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3235 /* Test to see if the symbol specified by SYMNAME (which is already
3236 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3237 characters. If so, add it to the current completion list. */
3240 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3241 char *text
, char *word
)
3246 /* clip symbols that cannot match */
3248 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3253 /* We have a match for a completion, so add SYMNAME to the current list
3254 of matches. Note that the name is moved to freshly malloc'd space. */
3258 if (word
== sym_text
)
3260 new = xmalloc (strlen (symname
) + 5);
3261 strcpy (new, symname
);
3263 else if (word
> sym_text
)
3265 /* Return some portion of symname. */
3266 new = xmalloc (strlen (symname
) + 5);
3267 strcpy (new, symname
+ (word
- sym_text
));
3271 /* Return some of SYM_TEXT plus symname. */
3272 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3273 strncpy (new, word
, sym_text
- word
);
3274 new[sym_text
- word
] = '\0';
3275 strcat (new, symname
);
3278 if (return_val_index
+ 3 > return_val_size
)
3280 newsize
= (return_val_size
*= 2) * sizeof (char *);
3281 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3283 return_val
[return_val_index
++] = new;
3284 return_val
[return_val_index
] = NULL
;
3288 /* Return a NULL terminated array of all symbols (regardless of class)
3289 which begin by matching TEXT. If the answer is no symbols, then
3290 the return value is an array which contains only a NULL pointer.
3292 Problem: All of the symbols have to be copied because readline frees them.
3293 I'm not going to worry about this; hopefully there won't be that many. */
3296 make_symbol_completion_list (char *text
, char *word
)
3298 register struct symbol
*sym
;
3299 register struct symtab
*s
;
3300 register struct partial_symtab
*ps
;
3301 register struct minimal_symbol
*msymbol
;
3302 register struct objfile
*objfile
;
3303 register struct block
*b
, *surrounding_static_block
= 0;
3305 struct partial_symbol
**psym
;
3306 /* The symbol we are completing on. Points in same buffer as text. */
3308 /* Length of sym_text. */
3311 /* Now look for the symbol we are supposed to complete on.
3312 FIXME: This should be language-specific. */
3316 char *quote_pos
= NULL
;
3318 /* First see if this is a quoted string. */
3320 for (p
= text
; *p
!= '\0'; ++p
)
3322 if (quote_found
!= '\0')
3324 if (*p
== quote_found
)
3325 /* Found close quote. */
3327 else if (*p
== '\\' && p
[1] == quote_found
)
3328 /* A backslash followed by the quote character
3329 doesn't end the string. */
3332 else if (*p
== '\'' || *p
== '"')
3338 if (quote_found
== '\'')
3339 /* A string within single quotes can be a symbol, so complete on it. */
3340 sym_text
= quote_pos
+ 1;
3341 else if (quote_found
== '"')
3342 /* A double-quoted string is never a symbol, nor does it make sense
3343 to complete it any other way. */
3345 return_val
= (char **) xmalloc (sizeof (char *));
3346 return_val
[0] = NULL
;
3351 /* It is not a quoted string. Break it based on the characters
3352 which are in symbols. */
3355 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3364 sym_text_len
= strlen (sym_text
);
3366 return_val_size
= 100;
3367 return_val_index
= 0;
3368 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3369 return_val
[0] = NULL
;
3371 /* Look through the partial symtabs for all symbols which begin
3372 by matching SYM_TEXT. Add each one that you find to the list. */
3374 ALL_PSYMTABS (objfile
, ps
)
3376 /* If the psymtab's been read in we'll get it when we search
3377 through the blockvector. */
3381 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3382 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3383 + ps
->n_global_syms
);
3386 /* If interrupted, then quit. */
3388 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3391 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3392 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3393 + ps
->n_static_syms
);
3397 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3401 /* At this point scan through the misc symbol vectors and add each
3402 symbol you find to the list. Eventually we want to ignore
3403 anything that isn't a text symbol (everything else will be
3404 handled by the psymtab code above). */
3406 ALL_MSYMBOLS (objfile
, msymbol
)
3409 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3412 /* Search upwards from currently selected frame (so that we can
3413 complete on local vars. */
3415 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3417 if (!BLOCK_SUPERBLOCK (b
))
3419 surrounding_static_block
= b
; /* For elmin of dups */
3422 /* Also catch fields of types defined in this places which match our
3423 text string. Only complete on types visible from current context. */
3425 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3427 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3428 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3430 struct type
*t
= SYMBOL_TYPE (sym
);
3431 enum type_code c
= TYPE_CODE (t
);
3433 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3435 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3437 if (TYPE_FIELD_NAME (t
, j
))
3439 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3440 sym_text
, sym_text_len
, text
, word
);
3448 /* Go through the symtabs and check the externs and statics for
3449 symbols which match. */
3451 ALL_SYMTABS (objfile
, s
)
3454 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3455 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3457 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3461 ALL_SYMTABS (objfile
, s
)
3464 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3465 /* Don't do this block twice. */
3466 if (b
== surrounding_static_block
)
3468 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3470 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3474 return (return_val
);
3477 /* Like make_symbol_completion_list, but returns a list of symbols
3478 defined in a source file FILE. */
3481 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3483 register struct symbol
*sym
;
3484 register struct symtab
*s
;
3485 register struct block
*b
;
3487 /* The symbol we are completing on. Points in same buffer as text. */
3489 /* Length of sym_text. */
3492 /* Now look for the symbol we are supposed to complete on.
3493 FIXME: This should be language-specific. */
3497 char *quote_pos
= NULL
;
3499 /* First see if this is a quoted string. */
3501 for (p
= text
; *p
!= '\0'; ++p
)
3503 if (quote_found
!= '\0')
3505 if (*p
== quote_found
)
3506 /* Found close quote. */
3508 else if (*p
== '\\' && p
[1] == quote_found
)
3509 /* A backslash followed by the quote character
3510 doesn't end the string. */
3513 else if (*p
== '\'' || *p
== '"')
3519 if (quote_found
== '\'')
3520 /* A string within single quotes can be a symbol, so complete on it. */
3521 sym_text
= quote_pos
+ 1;
3522 else if (quote_found
== '"')
3523 /* A double-quoted string is never a symbol, nor does it make sense
3524 to complete it any other way. */
3526 return_val
= (char **) xmalloc (sizeof (char *));
3527 return_val
[0] = NULL
;
3532 /* It is not a quoted string. Break it based on the characters
3533 which are in symbols. */
3536 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3545 sym_text_len
= strlen (sym_text
);
3547 return_val_size
= 10;
3548 return_val_index
= 0;
3549 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3550 return_val
[0] = NULL
;
3552 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3554 s
= lookup_symtab (srcfile
);
3557 /* Maybe they typed the file with leading directories, while the
3558 symbol tables record only its basename. */
3559 const char *tail
= lbasename (srcfile
);
3562 s
= lookup_symtab (tail
);
3565 /* If we have no symtab for that file, return an empty list. */
3567 return (return_val
);
3569 /* Go through this symtab and check the externs and statics for
3570 symbols which match. */
3572 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3573 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3575 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3578 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3579 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3581 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3584 return (return_val
);
3587 /* A helper function for make_source_files_completion_list. It adds
3588 another file name to a list of possible completions, growing the
3589 list as necessary. */
3592 add_filename_to_list (const char *fname
, char *text
, char *word
,
3593 char ***list
, int *list_used
, int *list_alloced
)
3596 size_t fnlen
= strlen (fname
);
3598 if (*list_used
+ 1 >= *list_alloced
)
3601 *list
= (char **) xrealloc ((char *) *list
,
3602 *list_alloced
* sizeof (char *));
3607 /* Return exactly fname. */
3608 new = xmalloc (fnlen
+ 5);
3609 strcpy (new, fname
);
3611 else if (word
> text
)
3613 /* Return some portion of fname. */
3614 new = xmalloc (fnlen
+ 5);
3615 strcpy (new, fname
+ (word
- text
));
3619 /* Return some of TEXT plus fname. */
3620 new = xmalloc (fnlen
+ (text
- word
) + 5);
3621 strncpy (new, word
, text
- word
);
3622 new[text
- word
] = '\0';
3623 strcat (new, fname
);
3625 (*list
)[*list_used
] = new;
3626 (*list
)[++*list_used
] = NULL
;
3630 not_interesting_fname (const char *fname
)
3632 static const char *illegal_aliens
[] = {
3633 "_globals_", /* inserted by coff_symtab_read */
3638 for (i
= 0; illegal_aliens
[i
]; i
++)
3640 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3646 /* Return a NULL terminated array of all source files whose names
3647 begin with matching TEXT. The file names are looked up in the
3648 symbol tables of this program. If the answer is no matchess, then
3649 the return value is an array which contains only a NULL pointer. */
3652 make_source_files_completion_list (char *text
, char *word
)
3654 register struct symtab
*s
;
3655 register struct partial_symtab
*ps
;
3656 register struct objfile
*objfile
;
3658 int list_alloced
= 1;
3660 size_t text_len
= strlen (text
);
3661 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3662 const char *base_name
;
3666 if (!have_full_symbols () && !have_partial_symbols ())
3669 ALL_SYMTABS (objfile
, s
)
3671 if (not_interesting_fname (s
->filename
))
3673 if (!filename_seen (s
->filename
, 1, &first
)
3674 #if HAVE_DOS_BASED_FILE_SYSTEM
3675 && strncasecmp (s
->filename
, text
, text_len
) == 0
3677 && strncmp (s
->filename
, text
, text_len
) == 0
3681 /* This file matches for a completion; add it to the current
3683 add_filename_to_list (s
->filename
, text
, word
,
3684 &list
, &list_used
, &list_alloced
);
3688 /* NOTE: We allow the user to type a base name when the
3689 debug info records leading directories, but not the other
3690 way around. This is what subroutines of breakpoint
3691 command do when they parse file names. */
3692 base_name
= lbasename (s
->filename
);
3693 if (base_name
!= s
->filename
3694 && !filename_seen (base_name
, 1, &first
)
3695 #if HAVE_DOS_BASED_FILE_SYSTEM
3696 && strncasecmp (base_name
, text
, text_len
) == 0
3698 && strncmp (base_name
, text
, text_len
) == 0
3701 add_filename_to_list (base_name
, text
, word
,
3702 &list
, &list_used
, &list_alloced
);
3706 ALL_PSYMTABS (objfile
, ps
)
3708 if (not_interesting_fname (ps
->filename
))
3712 if (!filename_seen (ps
->filename
, 1, &first
)
3713 #if HAVE_DOS_BASED_FILE_SYSTEM
3714 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3716 && strncmp (ps
->filename
, text
, text_len
) == 0
3720 /* This file matches for a completion; add it to the
3721 current list of matches. */
3722 add_filename_to_list (ps
->filename
, text
, word
,
3723 &list
, &list_used
, &list_alloced
);
3728 base_name
= lbasename (ps
->filename
);
3729 if (base_name
!= ps
->filename
3730 && !filename_seen (base_name
, 1, &first
)
3731 #if HAVE_DOS_BASED_FILE_SYSTEM
3732 && strncasecmp (base_name
, text
, text_len
) == 0
3734 && strncmp (base_name
, text
, text_len
) == 0
3737 add_filename_to_list (base_name
, text
, word
,
3738 &list
, &list_used
, &list_alloced
);
3746 /* Determine if PC is in the prologue of a function. The prologue is the area
3747 between the first instruction of a function, and the first executable line.
3748 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3750 If non-zero, func_start is where we think the prologue starts, possibly
3751 by previous examination of symbol table information.
3755 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3757 struct symtab_and_line sal
;
3758 CORE_ADDR func_addr
, func_end
;
3760 /* We have several sources of information we can consult to figure
3762 - Compilers usually emit line number info that marks the prologue
3763 as its own "source line". So the ending address of that "line"
3764 is the end of the prologue. If available, this is the most
3766 - The minimal symbols and partial symbols, which can usually tell
3767 us the starting and ending addresses of a function.
3768 - If we know the function's start address, we can call the
3769 architecture-defined SKIP_PROLOGUE function to analyze the
3770 instruction stream and guess where the prologue ends.
3771 - Our `func_start' argument; if non-zero, this is the caller's
3772 best guess as to the function's entry point. At the time of
3773 this writing, handle_inferior_event doesn't get this right, so
3774 it should be our last resort. */
3776 /* Consult the partial symbol table, to find which function
3778 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3780 CORE_ADDR prologue_end
;
3782 /* We don't even have minsym information, so fall back to using
3783 func_start, if given. */
3785 return 1; /* We *might* be in a prologue. */
3787 prologue_end
= SKIP_PROLOGUE (func_start
);
3789 return func_start
<= pc
&& pc
< prologue_end
;
3792 /* If we have line number information for the function, that's
3793 usually pretty reliable. */
3794 sal
= find_pc_line (func_addr
, 0);
3796 /* Now sal describes the source line at the function's entry point,
3797 which (by convention) is the prologue. The end of that "line",
3798 sal.end, is the end of the prologue.
3800 Note that, for functions whose source code is all on a single
3801 line, the line number information doesn't always end up this way.
3802 So we must verify that our purported end-of-prologue address is
3803 *within* the function, not at its start or end. */
3805 || sal
.end
<= func_addr
3806 || func_end
<= sal
.end
)
3808 /* We don't have any good line number info, so use the minsym
3809 information, together with the architecture-specific prologue
3811 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3813 return func_addr
<= pc
&& pc
< prologue_end
;
3816 /* We have line number info, and it looks good. */
3817 return func_addr
<= pc
&& pc
< sal
.end
;
3821 /* Begin overload resolution functions */
3824 remove_params (const char *demangled_name
)
3830 if (demangled_name
== NULL
)
3833 /* First find the end of the arg list. */
3834 argp
= strrchr (demangled_name
, ')');
3838 /* Back up to the beginning. */
3841 while (argp
-- > demangled_name
)
3845 else if (*argp
== '(')
3854 internal_error (__FILE__
, __LINE__
,
3855 "bad demangled name %s\n", demangled_name
);
3856 while (argp
[-1] == ' ' && argp
> demangled_name
)
3859 new_name
= xmalloc (argp
- demangled_name
+ 1);
3860 memcpy (new_name
, demangled_name
, argp
- demangled_name
);
3861 new_name
[argp
- demangled_name
] = '\0';
3865 /* Helper routine for make_symbol_completion_list. */
3867 static int sym_return_val_size
;
3868 static int sym_return_val_index
;
3869 static struct symbol
**sym_return_val
;
3871 /* Test to see if the symbol specified by SYMNAME (which is already
3872 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3873 characters. If so, add it to the current completion list. */
3876 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3882 /* If there is no type information, we can't do anything, so skip */
3883 if (SYMBOL_TYPE (sym
) == NULL
)
3886 /* skip any symbols that we've already considered. */
3887 for (i
= 0; i
< sym_return_val_index
; ++i
)
3888 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3891 /* Get the demangled name without parameters */
3892 sym_name
= remove_params (SYMBOL_DEMANGLED_NAME (sym
));
3896 /* skip symbols that cannot match */
3897 if (strcmp (sym_name
, oload_name
) != 0)
3905 /* We have a match for an overload instance, so add SYM to the current list
3906 * of overload instances */
3907 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3909 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3910 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3912 sym_return_val
[sym_return_val_index
++] = sym
;
3913 sym_return_val
[sym_return_val_index
] = NULL
;
3916 /* Return a null-terminated list of pointers to function symbols that
3917 * match name of the supplied symbol FSYM.
3918 * This is used in finding all overloaded instances of a function name.
3919 * This has been modified from make_symbol_completion_list. */
3923 make_symbol_overload_list (struct symbol
*fsym
)
3925 register struct symbol
*sym
;
3926 register struct symtab
*s
;
3927 register struct partial_symtab
*ps
;
3928 register struct objfile
*objfile
;
3929 register struct block
*b
, *surrounding_static_block
= 0;
3931 /* The name we are completing on. */
3932 char *oload_name
= NULL
;
3933 /* Length of name. */
3934 int oload_name_len
= 0;
3936 /* Look for the symbol we are supposed to complete on. */
3938 oload_name
= remove_params (SYMBOL_DEMANGLED_NAME (fsym
));
3941 sym_return_val_size
= 1;
3942 sym_return_val
= (struct symbol
**) xmalloc (2 * sizeof (struct symbol
*));
3943 sym_return_val
[0] = fsym
;
3944 sym_return_val
[1] = NULL
;
3946 return sym_return_val
;
3948 oload_name_len
= strlen (oload_name
);
3950 sym_return_val_size
= 100;
3951 sym_return_val_index
= 0;
3952 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3953 sym_return_val
[0] = NULL
;
3955 /* Look through the partial symtabs for all symbols which begin
3956 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3958 ALL_PSYMTABS (objfile
, ps
)
3960 struct partial_symbol
**psym
;
3962 /* If the psymtab's been read in we'll get it when we search
3963 through the blockvector. */
3967 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3968 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3969 + ps
->n_global_syms
);
3972 /* If interrupted, then quit. */
3974 /* This will cause the symbol table to be read if it has not yet been */
3975 s
= PSYMTAB_TO_SYMTAB (ps
);
3978 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3979 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3980 + ps
->n_static_syms
);
3984 /* This will cause the symbol table to be read if it has not yet been */
3985 s
= PSYMTAB_TO_SYMTAB (ps
);
3989 /* Search upwards from currently selected frame (so that we can
3990 complete on local vars. */
3992 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3994 if (!BLOCK_SUPERBLOCK (b
))
3996 surrounding_static_block
= b
; /* For elimination of dups */
3999 /* Also catch fields of types defined in this places which match our
4000 text string. Only complete on types visible from current context. */
4002 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4004 overload_list_add_symbol (sym
, oload_name
);
4008 /* Go through the symtabs and check the externs and statics for
4009 symbols which match. */
4011 ALL_SYMTABS (objfile
, s
)
4014 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4015 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4017 overload_list_add_symbol (sym
, oload_name
);
4021 ALL_SYMTABS (objfile
, s
)
4024 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4025 /* Don't do this block twice. */
4026 if (b
== surrounding_static_block
)
4028 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4030 overload_list_add_symbol (sym
, oload_name
);
4036 return (sym_return_val
);
4039 /* End of overload resolution functions */
4041 struct symtabs_and_lines
4042 decode_line_spec (char *string
, int funfirstline
)
4044 struct symtabs_and_lines sals
;
4045 struct symtab_and_line cursal
;
4048 error ("Empty line specification.");
4050 /* We use whatever is set as the current source line. We do not try
4051 and get a default or it will recursively call us! */
4052 cursal
= get_current_source_symtab_and_line ();
4054 sals
= decode_line_1 (&string
, funfirstline
,
4055 cursal
.symtab
, cursal
.line
,
4059 error ("Junk at end of line specification: %s", string
);
4064 static char *name_of_main
;
4067 set_main_name (const char *name
)
4069 if (name_of_main
!= NULL
)
4071 xfree (name_of_main
);
4072 name_of_main
= NULL
;
4076 name_of_main
= xstrdup (name
);
4083 if (name_of_main
!= NULL
)
4084 return name_of_main
;
4091 _initialize_symtab (void)
4093 add_info ("variables", variables_info
,
4094 "All global and static variable names, or those matching REGEXP.");
4096 add_com ("whereis", class_info
, variables_info
,
4097 "All global and static variable names, or those matching REGEXP.");
4099 add_info ("functions", functions_info
,
4100 "All function names, or those matching REGEXP.");
4103 /* FIXME: This command has at least the following problems:
4104 1. It prints builtin types (in a very strange and confusing fashion).
4105 2. It doesn't print right, e.g. with
4106 typedef struct foo *FOO
4107 type_print prints "FOO" when we want to make it (in this situation)
4108 print "struct foo *".
4109 I also think "ptype" or "whatis" is more likely to be useful (but if
4110 there is much disagreement "info types" can be fixed). */
4111 add_info ("types", types_info
,
4112 "All type names, or those matching REGEXP.");
4114 add_info ("sources", sources_info
,
4115 "Source files in the program.");
4117 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4118 "Set a breakpoint for all functions matching REGEXP.");
4122 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4123 add_com ("lg", class_info
, variables_info
,
4124 "All global and static variable names, or those matching REGEXP.");
4127 /* Initialize the one built-in type that isn't language dependent... */
4128 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4129 "<unknown type>", (struct objfile
*) NULL
);