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
, **real_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;
1327 while (top
> bottom
)
1329 center
= bottom
+ (top
- bottom
) / 2;
1330 if (!(center
< top
))
1331 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1332 if (!do_linear_search
1333 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1335 do_linear_search
= 1;
1337 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1343 bottom
= center
+ 1;
1346 if (!(top
== bottom
))
1347 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1349 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1350 we don't have to force a linear search on C++. Probably holds true
1351 for JAVA as well, no way to check.*/
1352 while (top
<= real_top
&& SYMBOL_MATCHES_NAME (*top
,name
))
1354 if (SYMBOL_NAMESPACE (*top
) == namespace)
1362 /* Can't use a binary search or else we found during the binary search that
1363 we should also do a linear search. */
1365 if (do_linear_search
)
1367 for (psym
= start
; psym
< start
+ length
; psym
++)
1369 if (namespace == SYMBOL_NAMESPACE (*psym
))
1371 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1382 /* Look up a type named NAME in the struct_namespace. The type returned
1383 must not be opaque -- i.e., must have at least one field defined
1385 This code was modelled on lookup_symbol -- the parts not relevant to looking
1386 up types were just left out. In particular it's assumed here that types
1387 are available in struct_namespace and only at file-static or global blocks. */
1391 lookup_transparent_type (const char *name
)
1393 register struct symbol
*sym
;
1394 register struct symtab
*s
= NULL
;
1395 register struct partial_symtab
*ps
;
1396 struct blockvector
*bv
;
1397 register struct objfile
*objfile
;
1398 register struct block
*block
;
1400 /* Now search all the global symbols. Do the symtab's first, then
1401 check the psymtab's. If a psymtab indicates the existence
1402 of the desired name as a global, then do psymtab-to-symtab
1403 conversion on the fly and return the found symbol. */
1405 ALL_SYMTABS (objfile
, s
)
1407 bv
= BLOCKVECTOR (s
);
1408 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1409 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1410 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1412 return SYMBOL_TYPE (sym
);
1416 ALL_PSYMTABS (objfile
, ps
)
1418 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1420 s
= PSYMTAB_TO_SYMTAB (ps
);
1421 bv
= BLOCKVECTOR (s
);
1422 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1423 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1426 /* This shouldn't be necessary, but as a last resort
1427 * try looking in the statics even though the psymtab
1428 * claimed the symbol was global. It's possible that
1429 * the psymtab gets it wrong in some cases.
1431 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1432 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1434 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1435 %s may be an inlined function, or may be a template function\n\
1436 (if a template, try specifying an instantiation: %s<type>).",
1437 name
, ps
->filename
, name
, name
);
1439 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1440 return SYMBOL_TYPE (sym
);
1444 /* Now search the static file-level symbols.
1445 Not strictly correct, but more useful than an error.
1446 Do the symtab's first, then
1447 check the psymtab's. If a psymtab indicates the existence
1448 of the desired name as a file-level static, then do psymtab-to-symtab
1449 conversion on the fly and return the found symbol.
1452 ALL_SYMTABS (objfile
, s
)
1454 bv
= BLOCKVECTOR (s
);
1455 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1456 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1457 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1459 return SYMBOL_TYPE (sym
);
1463 ALL_PSYMTABS (objfile
, ps
)
1465 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1467 s
= PSYMTAB_TO_SYMTAB (ps
);
1468 bv
= BLOCKVECTOR (s
);
1469 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1470 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1473 /* This shouldn't be necessary, but as a last resort
1474 * try looking in the globals even though the psymtab
1475 * claimed the symbol was static. It's possible that
1476 * the psymtab gets it wrong in some cases.
1478 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1479 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_NAMESPACE
);
1481 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1482 %s may be an inlined function, or may be a template function\n\
1483 (if a template, try specifying an instantiation: %s<type>).",
1484 name
, ps
->filename
, name
, name
);
1486 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1487 return SYMBOL_TYPE (sym
);
1490 return (struct type
*) 0;
1494 /* Find the psymtab containing main(). */
1495 /* FIXME: What about languages without main() or specially linked
1496 executables that have no main() ? */
1498 struct partial_symtab
*
1499 find_main_psymtab (void)
1501 register struct partial_symtab
*pst
;
1502 register struct objfile
*objfile
;
1504 ALL_PSYMTABS (objfile
, pst
)
1506 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1514 /* Search BLOCK for symbol NAME in NAMESPACE.
1516 Note that if NAME is the demangled form of a C++ symbol, we will fail
1517 to find a match during the binary search of the non-encoded names, but
1518 for now we don't worry about the slight inefficiency of looking for
1519 a match we'll never find, since it will go pretty quick. Once the
1520 binary search terminates, we drop through and do a straight linear
1521 search on the symbols. Each symbol which is marked as being a C++
1522 symbol (language_cplus set) has both the encoded and non-encoded names
1525 If MANGLED_NAME is non-NULL, verify that any symbol we find has this
1526 particular mangled name.
1530 lookup_block_symbol (register const struct block
*block
, const char *name
,
1531 const char *mangled_name
,
1532 const namespace_enum
namespace)
1534 register int bot
, top
, inc
;
1535 register struct symbol
*sym
;
1536 register struct symbol
*sym_found
= NULL
;
1537 register int do_linear_search
= 1;
1539 if (BLOCK_HASHTABLE (block
))
1541 unsigned int hash_index
;
1542 hash_index
= msymbol_hash_iw (name
);
1543 hash_index
= hash_index
% BLOCK_BUCKETS (block
);
1544 for (sym
= BLOCK_BUCKET (block
, hash_index
); sym
; sym
= sym
->hash_next
)
1546 if (SYMBOL_NAMESPACE (sym
) == namespace
1548 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1549 : SYMBOL_MATCHES_NAME (sym
, name
)))
1555 /* If the blocks's symbols were sorted, start with a binary search. */
1557 if (BLOCK_SHOULD_SORT (block
))
1559 /* Reset the linear search flag so if the binary search fails, we
1560 won't do the linear search once unless we find some reason to
1563 do_linear_search
= 0;
1564 top
= BLOCK_NSYMS (block
);
1567 /* Advance BOT to not far before the first symbol whose name is NAME. */
1571 inc
= (top
- bot
+ 1);
1572 /* No need to keep binary searching for the last few bits worth. */
1577 inc
= (inc
>> 1) + bot
;
1578 sym
= BLOCK_SYM (block
, inc
);
1579 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1581 do_linear_search
= 1;
1583 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1587 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1591 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1601 /* Now scan forward until we run out of symbols, find one whose
1602 name is greater than NAME, or find one we want. If there is
1603 more than one symbol with the right name and namespace, we
1604 return the first one; I believe it is now impossible for us
1605 to encounter two symbols with the same name and namespace
1606 here, because blocks containing argument symbols are no
1607 longer sorted. The exception is for C++, where multiple functions
1608 (cloned constructors / destructors, in particular) can have
1609 the same demangled name. So if we have a particular
1610 mangled name to match, try to do so. */
1612 top
= BLOCK_NSYMS (block
);
1615 sym
= BLOCK_SYM (block
, bot
);
1616 if (SYMBOL_NAMESPACE (sym
) == namespace
1618 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1619 : SYMBOL_MATCHES_NAME (sym
, name
)))
1623 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1631 /* Here if block isn't sorted, or we fail to find a match during the
1632 binary search above. If during the binary search above, we find a
1633 symbol which is a Java symbol, then we have re-enabled the linear
1634 search flag which was reset when starting the binary search.
1636 This loop is equivalent to the loop above, but hacked greatly for speed.
1638 Note that parameter symbols do not always show up last in the
1639 list; this loop makes sure to take anything else other than
1640 parameter symbols first; it only uses parameter symbols as a
1641 last resort. Note that this only takes up extra computation
1644 if (do_linear_search
)
1646 top
= BLOCK_NSYMS (block
);
1650 sym
= BLOCK_SYM (block
, bot
);
1651 if (SYMBOL_NAMESPACE (sym
) == namespace
1653 ? strcmp (SYMBOL_NAME (sym
), mangled_name
) == 0
1654 : SYMBOL_MATCHES_NAME (sym
, name
)))
1656 /* If SYM has aliases, then use any alias that is active
1657 at the current PC. If no alias is active at the current
1658 PC, then use the main symbol.
1660 ?!? Is checking the current pc correct? Is this routine
1661 ever called to look up a symbol from another context?
1663 FIXME: No, it's not correct. If someone sets a
1664 conditional breakpoint at an address, then the
1665 breakpoint's `struct expression' should refer to the
1666 `struct symbol' appropriate for the breakpoint's
1667 address, which may not be the PC.
1669 Even if it were never called from another context,
1670 it's totally bizarre for lookup_symbol's behavior to
1671 depend on the value of the inferior's current PC. We
1672 should pass in the appropriate PC as well as the
1673 block. The interface to lookup_symbol should change
1674 to require the caller to provide a PC. */
1676 if (SYMBOL_ALIASES (sym
))
1677 sym
= find_active_alias (sym
, read_pc ());
1680 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1681 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1682 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1683 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1684 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1685 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1693 return (sym_found
); /* Will be NULL if not found. */
1696 /* Given a main symbol SYM and ADDR, search through the alias
1697 list to determine if an alias is active at ADDR and return
1700 If no alias is active, then return SYM. */
1702 static struct symbol
*
1703 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1705 struct range_list
*r
;
1706 struct alias_list
*aliases
;
1708 /* If we have aliases, check them first. */
1709 aliases
= SYMBOL_ALIASES (sym
);
1713 if (!SYMBOL_RANGES (aliases
->sym
))
1714 return aliases
->sym
;
1715 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1717 if (r
->start
<= addr
&& r
->end
> addr
)
1718 return aliases
->sym
;
1720 aliases
= aliases
->next
;
1723 /* Nothing found, return the main symbol. */
1728 /* Return the symbol for the function which contains a specified
1729 lexical block, described by a struct block BL. */
1732 block_function (struct block
*bl
)
1734 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1735 bl
= BLOCK_SUPERBLOCK (bl
);
1737 return BLOCK_FUNCTION (bl
);
1740 /* Find the symtab associated with PC and SECTION. Look through the
1741 psymtabs and read in another symtab if necessary. */
1744 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1746 register struct block
*b
;
1747 struct blockvector
*bv
;
1748 register struct symtab
*s
= NULL
;
1749 register struct symtab
*best_s
= NULL
;
1750 register struct partial_symtab
*ps
;
1751 register struct objfile
*objfile
;
1752 CORE_ADDR distance
= 0;
1753 struct minimal_symbol
*msymbol
;
1755 /* If we know that this is not a text address, return failure. This is
1756 necessary because we loop based on the block's high and low code
1757 addresses, which do not include the data ranges, and because
1758 we call find_pc_sect_psymtab which has a similar restriction based
1759 on the partial_symtab's texthigh and textlow. */
1760 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1762 && (msymbol
->type
== mst_data
1763 || msymbol
->type
== mst_bss
1764 || msymbol
->type
== mst_abs
1765 || msymbol
->type
== mst_file_data
1766 || msymbol
->type
== mst_file_bss
))
1769 /* Search all symtabs for the one whose file contains our address, and which
1770 is the smallest of all the ones containing the address. This is designed
1771 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1772 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1773 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1775 This happens for native ecoff format, where code from included files
1776 gets its own symtab. The symtab for the included file should have
1777 been read in already via the dependency mechanism.
1778 It might be swifter to create several symtabs with the same name
1779 like xcoff does (I'm not sure).
1781 It also happens for objfiles that have their functions reordered.
1782 For these, the symtab we are looking for is not necessarily read in. */
1784 ALL_SYMTABS (objfile
, s
)
1786 bv
= BLOCKVECTOR (s
);
1787 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1789 if (BLOCK_START (b
) <= pc
1790 && BLOCK_END (b
) > pc
1792 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1794 /* For an objfile that has its functions reordered,
1795 find_pc_psymtab will find the proper partial symbol table
1796 and we simply return its corresponding symtab. */
1797 /* In order to better support objfiles that contain both
1798 stabs and coff debugging info, we continue on if a psymtab
1800 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1802 ps
= find_pc_sect_psymtab (pc
, section
);
1804 return PSYMTAB_TO_SYMTAB (ps
);
1809 struct symbol
*sym
= NULL
;
1811 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
1813 fixup_symbol_section (sym
, objfile
);
1814 if (section
== SYMBOL_BFD_SECTION (sym
))
1817 if ((i
>= BLOCK_BUCKETS (b
)) && (sym
== NULL
))
1818 continue; /* no symbol in this symtab matches section */
1820 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1829 ps
= find_pc_sect_psymtab (pc
, section
);
1833 /* Might want to error() here (in case symtab is corrupt and
1834 will cause a core dump), but maybe we can successfully
1835 continue, so let's not. */
1837 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1839 s
= PSYMTAB_TO_SYMTAB (ps
);
1844 /* Find the symtab associated with PC. Look through the psymtabs and
1845 read in another symtab if necessary. Backward compatibility, no section */
1848 find_pc_symtab (CORE_ADDR pc
)
1850 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1854 /* Find the source file and line number for a given PC value and SECTION.
1855 Return a structure containing a symtab pointer, a line number,
1856 and a pc range for the entire source line.
1857 The value's .pc field is NOT the specified pc.
1858 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1859 use the line that ends there. Otherwise, in that case, the line
1860 that begins there is used. */
1862 /* The big complication here is that a line may start in one file, and end just
1863 before the start of another file. This usually occurs when you #include
1864 code in the middle of a subroutine. To properly find the end of a line's PC
1865 range, we must search all symtabs associated with this compilation unit, and
1866 find the one whose first PC is closer than that of the next line in this
1869 /* If it's worth the effort, we could be using a binary search. */
1871 struct symtab_and_line
1872 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1875 register struct linetable
*l
;
1878 register struct linetable_entry
*item
;
1879 struct symtab_and_line val
;
1880 struct blockvector
*bv
;
1881 struct minimal_symbol
*msymbol
;
1882 struct minimal_symbol
*mfunsym
;
1884 /* Info on best line seen so far, and where it starts, and its file. */
1886 struct linetable_entry
*best
= NULL
;
1887 CORE_ADDR best_end
= 0;
1888 struct symtab
*best_symtab
= 0;
1890 /* Store here the first line number
1891 of a file which contains the line at the smallest pc after PC.
1892 If we don't find a line whose range contains PC,
1893 we will use a line one less than this,
1894 with a range from the start of that file to the first line's pc. */
1895 struct linetable_entry
*alt
= NULL
;
1896 struct symtab
*alt_symtab
= 0;
1898 /* Info on best line seen in this file. */
1900 struct linetable_entry
*prev
;
1902 /* If this pc is not from the current frame,
1903 it is the address of the end of a call instruction.
1904 Quite likely that is the start of the following statement.
1905 But what we want is the statement containing the instruction.
1906 Fudge the pc to make sure we get that. */
1908 init_sal (&val
); /* initialize to zeroes */
1910 /* It's tempting to assume that, if we can't find debugging info for
1911 any function enclosing PC, that we shouldn't search for line
1912 number info, either. However, GAS can emit line number info for
1913 assembly files --- very helpful when debugging hand-written
1914 assembly code. In such a case, we'd have no debug info for the
1915 function, but we would have line info. */
1920 /* elz: added this because this function returned the wrong
1921 information if the pc belongs to a stub (import/export)
1922 to call a shlib function. This stub would be anywhere between
1923 two functions in the target, and the line info was erroneously
1924 taken to be the one of the line before the pc.
1926 /* RT: Further explanation:
1928 * We have stubs (trampolines) inserted between procedures.
1930 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1931 * exists in the main image.
1933 * In the minimal symbol table, we have a bunch of symbols
1934 * sorted by start address. The stubs are marked as "trampoline",
1935 * the others appear as text. E.g.:
1937 * Minimal symbol table for main image
1938 * main: code for main (text symbol)
1939 * shr1: stub (trampoline symbol)
1940 * foo: code for foo (text symbol)
1942 * Minimal symbol table for "shr1" image:
1944 * shr1: code for shr1 (text symbol)
1947 * So the code below is trying to detect if we are in the stub
1948 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1949 * and if found, do the symbolization from the real-code address
1950 * rather than the stub address.
1952 * Assumptions being made about the minimal symbol table:
1953 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1954 * if we're really in the trampoline. If we're beyond it (say
1955 * we're in "foo" in the above example), it'll have a closer
1956 * symbol (the "foo" text symbol for example) and will not
1957 * return the trampoline.
1958 * 2. lookup_minimal_symbol_text() will find a real text symbol
1959 * corresponding to the trampoline, and whose address will
1960 * be different than the trampoline address. I put in a sanity
1961 * check for the address being the same, to avoid an
1962 * infinite recursion.
1964 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1965 if (msymbol
!= NULL
)
1966 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1968 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1969 if (mfunsym
== NULL
)
1970 /* I eliminated this warning since it is coming out
1971 * in the following situation:
1972 * gdb shmain // test program with shared libraries
1973 * (gdb) break shr1 // function in shared lib
1974 * Warning: In stub for ...
1975 * In the above situation, the shared lib is not loaded yet,
1976 * so of course we can't find the real func/line info,
1977 * but the "break" still works, and the warning is annoying.
1978 * So I commented out the warning. RT */
1979 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1981 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1982 /* Avoid infinite recursion */
1983 /* See above comment about why warning is commented out */
1984 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1987 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1991 s
= find_pc_sect_symtab (pc
, section
);
1994 /* if no symbol information, return previous pc */
2001 bv
= BLOCKVECTOR (s
);
2003 /* Look at all the symtabs that share this blockvector.
2004 They all have the same apriori range, that we found was right;
2005 but they have different line tables. */
2007 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2009 /* Find the best line in this symtab. */
2016 /* I think len can be zero if the symtab lacks line numbers
2017 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2018 I'm not sure which, and maybe it depends on the symbol
2024 item
= l
->item
; /* Get first line info */
2026 /* Is this file's first line closer than the first lines of other files?
2027 If so, record this file, and its first line, as best alternate. */
2028 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2034 for (i
= 0; i
< len
; i
++, item
++)
2036 /* Leave prev pointing to the linetable entry for the last line
2037 that started at or before PC. */
2044 /* At this point, prev points at the line whose start addr is <= pc, and
2045 item points at the next line. If we ran off the end of the linetable
2046 (pc >= start of the last line), then prev == item. If pc < start of
2047 the first line, prev will not be set. */
2049 /* Is this file's best line closer than the best in the other files?
2050 If so, record this file, and its best line, as best so far. */
2052 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
2057 /* Discard BEST_END if it's before the PC of the current BEST. */
2058 if (best_end
<= best
->pc
)
2062 /* If another line (denoted by ITEM) is in the linetable and its
2063 PC is after BEST's PC, but before the current BEST_END, then
2064 use ITEM's PC as the new best_end. */
2065 if (best
&& i
< len
&& item
->pc
> best
->pc
2066 && (best_end
== 0 || best_end
> item
->pc
))
2067 best_end
= item
->pc
;
2073 { /* If we didn't find any line # info, just
2079 val
.symtab
= alt_symtab
;
2080 val
.line
= alt
->line
- 1;
2082 /* Don't return line 0, that means that we didn't find the line. */
2086 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2090 else if (best
->line
== 0)
2092 /* If our best fit is in a range of PC's for which no line
2093 number info is available (line number is zero) then we didn't
2094 find any valid line information. */
2099 val
.symtab
= best_symtab
;
2100 val
.line
= best
->line
;
2102 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2107 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2109 val
.section
= section
;
2113 /* Backward compatibility (no section) */
2115 struct symtab_and_line
2116 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2120 section
= find_pc_overlay (pc
);
2121 if (pc_in_unmapped_range (pc
, section
))
2122 pc
= overlay_mapped_address (pc
, section
);
2123 return find_pc_sect_line (pc
, section
, notcurrent
);
2126 /* Find line number LINE in any symtab whose name is the same as
2129 If found, return the symtab that contains the linetable in which it was
2130 found, set *INDEX to the index in the linetable of the best entry
2131 found, and set *EXACT_MATCH nonzero if the value returned is an
2134 If not found, return NULL. */
2137 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2141 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2145 struct linetable
*best_linetable
;
2146 struct symtab
*best_symtab
;
2148 /* First try looking it up in the given symtab. */
2149 best_linetable
= LINETABLE (symtab
);
2150 best_symtab
= symtab
;
2151 best_index
= find_line_common (best_linetable
, line
, &exact
);
2152 if (best_index
< 0 || !exact
)
2154 /* Didn't find an exact match. So we better keep looking for
2155 another symtab with the same name. In the case of xcoff,
2156 multiple csects for one source file (produced by IBM's FORTRAN
2157 compiler) produce multiple symtabs (this is unavoidable
2158 assuming csects can be at arbitrary places in memory and that
2159 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2161 /* BEST is the smallest linenumber > LINE so far seen,
2162 or 0 if none has been seen so far.
2163 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2166 struct objfile
*objfile
;
2169 if (best_index
>= 0)
2170 best
= best_linetable
->item
[best_index
].line
;
2174 ALL_SYMTABS (objfile
, s
)
2176 struct linetable
*l
;
2179 if (!STREQ (symtab
->filename
, s
->filename
))
2182 ind
= find_line_common (l
, line
, &exact
);
2192 if (best
== 0 || l
->item
[ind
].line
< best
)
2194 best
= l
->item
[ind
].line
;
2207 *index
= best_index
;
2209 *exact_match
= exact
;
2214 /* Set the PC value for a given source file and line number and return true.
2215 Returns zero for invalid line number (and sets the PC to 0).
2216 The source file is specified with a struct symtab. */
2219 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2221 struct linetable
*l
;
2228 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2231 l
= LINETABLE (symtab
);
2232 *pc
= l
->item
[ind
].pc
;
2239 /* Find the range of pc values in a line.
2240 Store the starting pc of the line into *STARTPTR
2241 and the ending pc (start of next line) into *ENDPTR.
2242 Returns 1 to indicate success.
2243 Returns 0 if could not find the specified line. */
2246 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2249 CORE_ADDR startaddr
;
2250 struct symtab_and_line found_sal
;
2253 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2256 /* This whole function is based on address. For example, if line 10 has
2257 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2258 "info line *0x123" should say the line goes from 0x100 to 0x200
2259 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2260 This also insures that we never give a range like "starts at 0x134
2261 and ends at 0x12c". */
2263 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2264 if (found_sal
.line
!= sal
.line
)
2266 /* The specified line (sal) has zero bytes. */
2267 *startptr
= found_sal
.pc
;
2268 *endptr
= found_sal
.pc
;
2272 *startptr
= found_sal
.pc
;
2273 *endptr
= found_sal
.end
;
2278 /* Given a line table and a line number, return the index into the line
2279 table for the pc of the nearest line whose number is >= the specified one.
2280 Return -1 if none is found. The value is >= 0 if it is an index.
2282 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2285 find_line_common (register struct linetable
*l
, register int lineno
,
2291 /* BEST is the smallest linenumber > LINENO so far seen,
2292 or 0 if none has been seen so far.
2293 BEST_INDEX identifies the item for it. */
2295 int best_index
= -1;
2304 for (i
= 0; i
< len
; i
++)
2306 register struct linetable_entry
*item
= &(l
->item
[i
]);
2308 if (item
->line
== lineno
)
2310 /* Return the first (lowest address) entry which matches. */
2315 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2322 /* If we got here, we didn't get an exact match. */
2329 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2331 struct symtab_and_line sal
;
2332 sal
= find_pc_line (pc
, 0);
2335 return sal
.symtab
!= 0;
2338 /* Given a function symbol SYM, find the symtab and line for the start
2340 If the argument FUNFIRSTLINE is nonzero, we want the first line
2341 of real code inside the function. */
2343 struct symtab_and_line
2344 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2347 struct symtab_and_line sal
;
2349 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2350 fixup_symbol_section (sym
, NULL
);
2352 { /* skip "first line" of function (which is actually its prologue) */
2353 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2354 /* If function is in an unmapped overlay, use its unmapped LMA
2355 address, so that SKIP_PROLOGUE has something unique to work on */
2356 if (section_is_overlay (section
) &&
2357 !section_is_mapped (section
))
2358 pc
= overlay_unmapped_address (pc
, section
);
2360 pc
+= FUNCTION_START_OFFSET
;
2361 pc
= SKIP_PROLOGUE (pc
);
2363 /* For overlays, map pc back into its mapped VMA range */
2364 pc
= overlay_mapped_address (pc
, section
);
2366 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2368 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2369 /* Convex: no need to suppress code on first line, if any */
2372 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2373 line is still part of the same function. */
2375 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2376 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2378 /* First pc of next line */
2380 /* Recalculate the line number (might not be N+1). */
2381 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2389 /* If P is of the form "operator[ \t]+..." where `...' is
2390 some legitimate operator text, return a pointer to the
2391 beginning of the substring of the operator text.
2392 Otherwise, return "". */
2394 operator_chars (char *p
, char **end
)
2397 if (strncmp (p
, "operator", 8))
2401 /* Don't get faked out by `operator' being part of a longer
2403 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2406 /* Allow some whitespace between `operator' and the operator symbol. */
2407 while (*p
== ' ' || *p
== '\t')
2410 /* Recognize 'operator TYPENAME'. */
2412 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2414 register char *q
= p
+ 1;
2415 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2424 case '\\': /* regexp quoting */
2427 if (p
[2] == '=') /* 'operator\*=' */
2429 else /* 'operator\*' */
2433 else if (p
[1] == '[')
2436 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2437 else if (p
[2] == '\\' && p
[3] == ']')
2439 *end
= p
+ 4; /* 'operator\[\]' */
2443 error ("nothing is allowed between '[' and ']'");
2447 /* Gratuitous qoute: skip it and move on. */
2469 if (p
[0] == '-' && p
[1] == '>')
2471 /* Struct pointer member operator 'operator->'. */
2474 *end
= p
+ 3; /* 'operator->*' */
2477 else if (p
[2] == '\\')
2479 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2484 *end
= p
+ 2; /* 'operator->' */
2488 if (p
[1] == '=' || p
[1] == p
[0])
2499 error ("`operator ()' must be specified without whitespace in `()'");
2504 error ("`operator ?:' must be specified without whitespace in `?:'");
2509 error ("`operator []' must be specified without whitespace in `[]'");
2513 error ("`operator %s' not supported", p
);
2522 /* If FILE is not already in the table of files, return zero;
2523 otherwise return non-zero. Optionally add FILE to the table if ADD
2524 is non-zero. If *FIRST is non-zero, forget the old table
2527 filename_seen (const char *file
, int add
, int *first
)
2529 /* Table of files seen so far. */
2530 static const char **tab
= NULL
;
2531 /* Allocated size of tab in elements.
2532 Start with one 256-byte block (when using GNU malloc.c).
2533 24 is the malloc overhead when range checking is in effect. */
2534 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2535 /* Current size of tab in elements. */
2536 static int tab_cur_size
;
2542 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2546 /* Is FILE in tab? */
2547 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2548 if (strcmp (*p
, file
) == 0)
2551 /* No; maybe add it to tab. */
2554 if (tab_cur_size
== tab_alloc_size
)
2556 tab_alloc_size
*= 2;
2557 tab
= (const char **) xrealloc ((char *) tab
,
2558 tab_alloc_size
* sizeof (*tab
));
2560 tab
[tab_cur_size
++] = file
;
2566 /* Slave routine for sources_info. Force line breaks at ,'s.
2567 NAME is the name to print and *FIRST is nonzero if this is the first
2568 name printed. Set *FIRST to zero. */
2570 output_source_filename (char *name
, int *first
)
2572 /* Since a single source file can result in several partial symbol
2573 tables, we need to avoid printing it more than once. Note: if
2574 some of the psymtabs are read in and some are not, it gets
2575 printed both under "Source files for which symbols have been
2576 read" and "Source files for which symbols will be read in on
2577 demand". I consider this a reasonable way to deal with the
2578 situation. I'm not sure whether this can also happen for
2579 symtabs; it doesn't hurt to check. */
2581 /* Was NAME already seen? */
2582 if (filename_seen (name
, 1, first
))
2584 /* Yes; don't print it again. */
2587 /* No; print it and reset *FIRST. */
2594 printf_filtered (", ");
2598 fputs_filtered (name
, gdb_stdout
);
2602 sources_info (char *ignore
, int from_tty
)
2604 register struct symtab
*s
;
2605 register struct partial_symtab
*ps
;
2606 register struct objfile
*objfile
;
2609 if (!have_full_symbols () && !have_partial_symbols ())
2611 error ("No symbol table is loaded. Use the \"file\" command.");
2614 printf_filtered ("Source files for which symbols have been read in:\n\n");
2617 ALL_SYMTABS (objfile
, s
)
2619 output_source_filename (s
->filename
, &first
);
2621 printf_filtered ("\n\n");
2623 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2626 ALL_PSYMTABS (objfile
, ps
)
2630 output_source_filename (ps
->filename
, &first
);
2633 printf_filtered ("\n");
2637 file_matches (char *file
, char *files
[], int nfiles
)
2641 if (file
!= NULL
&& nfiles
!= 0)
2643 for (i
= 0; i
< nfiles
; i
++)
2645 if (strcmp (files
[i
], lbasename (file
)) == 0)
2649 else if (nfiles
== 0)
2654 /* Free any memory associated with a search. */
2656 free_search_symbols (struct symbol_search
*symbols
)
2658 struct symbol_search
*p
;
2659 struct symbol_search
*next
;
2661 for (p
= symbols
; p
!= NULL
; p
= next
)
2669 do_free_search_symbols_cleanup (void *symbols
)
2671 free_search_symbols (symbols
);
2675 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2677 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2680 /* Helper function for sort_search_symbols and qsort. Can only
2681 sort symbols, not minimal symbols. */
2683 compare_search_syms (const void *sa
, const void *sb
)
2685 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2686 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2688 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a
)->symbol
),
2689 SYMBOL_SOURCE_NAME ((*sym_b
)->symbol
));
2692 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2693 prevtail where it is, but update its next pointer to point to
2694 the first of the sorted symbols. */
2695 static struct symbol_search
*
2696 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2698 struct symbol_search
**symbols
, *symp
, *old_next
;
2701 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2703 symp
= prevtail
->next
;
2704 for (i
= 0; i
< nfound
; i
++)
2709 /* Generally NULL. */
2712 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2713 compare_search_syms
);
2716 for (i
= 0; i
< nfound
; i
++)
2718 symp
->next
= symbols
[i
];
2721 symp
->next
= old_next
;
2727 /* Search the symbol table for matches to the regular expression REGEXP,
2728 returning the results in *MATCHES.
2730 Only symbols of KIND are searched:
2731 FUNCTIONS_NAMESPACE - search all functions
2732 TYPES_NAMESPACE - search all type names
2733 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2734 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2735 and constants (enums)
2737 free_search_symbols should be called when *MATCHES is no longer needed.
2739 The results are sorted locally; each symtab's global and static blocks are
2740 separately alphabetized.
2743 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2744 struct symbol_search
**matches
)
2746 register struct symtab
*s
;
2747 register struct partial_symtab
*ps
;
2748 register struct blockvector
*bv
;
2749 struct blockvector
*prev_bv
= 0;
2750 register struct block
*b
;
2753 register struct symbol
*sym
;
2754 struct partial_symbol
**psym
;
2755 struct objfile
*objfile
;
2756 struct minimal_symbol
*msymbol
;
2759 static enum minimal_symbol_type types
[]
2761 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2762 static enum minimal_symbol_type types2
[]
2764 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2765 static enum minimal_symbol_type types3
[]
2767 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2768 static enum minimal_symbol_type types4
[]
2770 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2771 enum minimal_symbol_type ourtype
;
2772 enum minimal_symbol_type ourtype2
;
2773 enum minimal_symbol_type ourtype3
;
2774 enum minimal_symbol_type ourtype4
;
2775 struct symbol_search
*sr
;
2776 struct symbol_search
*psr
;
2777 struct symbol_search
*tail
;
2778 struct cleanup
*old_chain
= NULL
;
2780 if (kind
< VARIABLES_NAMESPACE
)
2781 error ("must search on specific namespace");
2783 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2784 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2785 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2786 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2788 sr
= *matches
= NULL
;
2793 /* Make sure spacing is right for C++ operators.
2794 This is just a courtesy to make the matching less sensitive
2795 to how many spaces the user leaves between 'operator'
2796 and <TYPENAME> or <OPERATOR>. */
2798 char *opname
= operator_chars (regexp
, &opend
);
2801 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2802 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2804 /* There should 1 space between 'operator' and 'TYPENAME'. */
2805 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2810 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2811 if (opname
[-1] == ' ')
2814 /* If wrong number of spaces, fix it. */
2817 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2818 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2823 if (0 != (val
= re_comp (regexp
)))
2824 error ("Invalid regexp (%s): %s", val
, regexp
);
2827 /* Search through the partial symtabs *first* for all symbols
2828 matching the regexp. That way we don't have to reproduce all of
2829 the machinery below. */
2831 ALL_PSYMTABS (objfile
, ps
)
2833 struct partial_symbol
**bound
, **gbound
, **sbound
;
2839 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2840 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2843 /* Go through all of the symbols stored in a partial
2844 symtab in one loop. */
2845 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2850 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2852 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2863 /* If it would match (logic taken from loop below)
2864 load the file and go on to the next one */
2865 if (file_matches (ps
->filename
, files
, nfiles
)
2866 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2867 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2868 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2869 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2870 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2871 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2873 PSYMTAB_TO_SYMTAB (ps
);
2881 /* Here, we search through the minimal symbol tables for functions
2882 and variables that match, and force their symbols to be read.
2883 This is in particular necessary for demangled variable names,
2884 which are no longer put into the partial symbol tables.
2885 The symbol will then be found during the scan of symtabs below.
2887 For functions, find_pc_symtab should succeed if we have debug info
2888 for the function, for variables we have to call lookup_symbol
2889 to determine if the variable has debug info.
2890 If the lookup fails, set found_misc so that we will rescan to print
2891 any matching symbols without debug info.
2894 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2896 ALL_MSYMBOLS (objfile
, msymbol
)
2898 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2899 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2900 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2901 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2903 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2905 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2907 if (kind
== FUNCTIONS_NAMESPACE
2908 || lookup_symbol (SYMBOL_NAME (msymbol
),
2909 (struct block
*) NULL
,
2911 0, (struct symtab
**) NULL
) == NULL
)
2919 ALL_SYMTABS (objfile
, s
)
2921 bv
= BLOCKVECTOR (s
);
2922 /* Often many files share a blockvector.
2923 Scan each blockvector only once so that
2924 we don't get every symbol many times.
2925 It happens that the first symtab in the list
2926 for any given blockvector is the main file. */
2928 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2930 struct symbol_search
*prevtail
= tail
;
2932 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2933 ALL_BLOCK_SYMBOLS (b
, j
, sym
)
2936 if (file_matches (s
->filename
, files
, nfiles
)
2937 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2938 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2939 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2940 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2941 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2942 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2943 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2946 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2950 psr
->msymbol
= NULL
;
2962 if (prevtail
== NULL
)
2964 struct symbol_search dummy
;
2967 tail
= sort_search_symbols (&dummy
, nfound
);
2970 old_chain
= make_cleanup_free_search_symbols (sr
);
2973 tail
= sort_search_symbols (prevtail
, nfound
);
2979 /* If there are no eyes, avoid all contact. I mean, if there are
2980 no debug symbols, then print directly from the msymbol_vector. */
2982 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2984 ALL_MSYMBOLS (objfile
, msymbol
)
2986 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2987 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2988 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2989 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2991 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2993 /* Functions: Look up by address. */
2994 if (kind
!= FUNCTIONS_NAMESPACE
||
2995 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2997 /* Variables/Absolutes: Look up by name */
2998 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2999 (struct block
*) NULL
, VAR_NAMESPACE
,
3000 0, (struct symtab
**) NULL
) == NULL
)
3003 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3005 psr
->msymbol
= msymbol
;
3012 old_chain
= make_cleanup_free_search_symbols (sr
);
3026 discard_cleanups (old_chain
);
3029 /* Helper function for symtab_symbol_info, this function uses
3030 the data returned from search_symbols() to print information
3031 regarding the match to gdb_stdout.
3034 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3035 int block
, char *last
)
3037 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3039 fputs_filtered ("\nFile ", gdb_stdout
);
3040 fputs_filtered (s
->filename
, gdb_stdout
);
3041 fputs_filtered (":\n", gdb_stdout
);
3044 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3045 printf_filtered ("static ");
3047 /* Typedef that is not a C++ class */
3048 if (kind
== TYPES_NAMESPACE
3049 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3050 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3051 /* variable, func, or typedef-that-is-c++-class */
3052 else if (kind
< TYPES_NAMESPACE
||
3053 (kind
== TYPES_NAMESPACE
&&
3054 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3056 type_print (SYMBOL_TYPE (sym
),
3057 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3058 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3061 printf_filtered (";\n");
3065 /* This help function for symtab_symbol_info() prints information
3066 for non-debugging symbols to gdb_stdout.
3069 print_msymbol_info (struct minimal_symbol
*msymbol
)
3073 if (TARGET_ADDR_BIT
<= 32)
3074 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3075 & (CORE_ADDR
) 0xffffffff,
3078 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3080 printf_filtered ("%s %s\n",
3081 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
3084 /* This is the guts of the commands "info functions", "info types", and
3085 "info variables". It calls search_symbols to find all matches and then
3086 print_[m]symbol_info to print out some useful information about the
3090 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
3092 static char *classnames
[]
3094 {"variable", "function", "type", "method"};
3095 struct symbol_search
*symbols
;
3096 struct symbol_search
*p
;
3097 struct cleanup
*old_chain
;
3098 char *last_filename
= NULL
;
3101 /* must make sure that if we're interrupted, symbols gets freed */
3102 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3103 old_chain
= make_cleanup_free_search_symbols (symbols
);
3105 printf_filtered (regexp
3106 ? "All %ss matching regular expression \"%s\":\n"
3107 : "All defined %ss:\n",
3108 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
3110 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3114 if (p
->msymbol
!= NULL
)
3118 printf_filtered ("\nNon-debugging symbols:\n");
3121 print_msymbol_info (p
->msymbol
);
3125 print_symbol_info (kind
,
3130 last_filename
= p
->symtab
->filename
;
3134 do_cleanups (old_chain
);
3138 variables_info (char *regexp
, int from_tty
)
3140 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3144 functions_info (char *regexp
, int from_tty
)
3146 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3151 types_info (char *regexp
, int from_tty
)
3153 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3156 /* Breakpoint all functions matching regular expression. */
3159 rbreak_command_wrapper (char *regexp
, int from_tty
)
3161 rbreak_command (regexp
, from_tty
);
3165 rbreak_command (char *regexp
, int from_tty
)
3167 struct symbol_search
*ss
;
3168 struct symbol_search
*p
;
3169 struct cleanup
*old_chain
;
3171 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3172 old_chain
= make_cleanup_free_search_symbols (ss
);
3174 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3176 if (p
->msymbol
== NULL
)
3178 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3179 + strlen (SYMBOL_NAME (p
->symbol
))
3181 strcpy (string
, p
->symtab
->filename
);
3182 strcat (string
, ":'");
3183 strcat (string
, SYMBOL_NAME (p
->symbol
));
3184 strcat (string
, "'");
3185 break_command (string
, from_tty
);
3186 print_symbol_info (FUNCTIONS_NAMESPACE
,
3190 p
->symtab
->filename
);
3194 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3195 printf_filtered ("<function, no debug info> %s;\n",
3196 SYMBOL_SOURCE_NAME (p
->msymbol
));
3200 do_cleanups (old_chain
);
3204 /* Return Nonzero if block a is lexically nested within block b,
3205 or if a and b have the same pc range.
3206 Return zero otherwise. */
3208 contained_in (struct block
*a
, struct block
*b
)
3212 return BLOCK_START (a
) >= BLOCK_START (b
)
3213 && BLOCK_END (a
) <= BLOCK_END (b
);
3217 /* Helper routine for make_symbol_completion_list. */
3219 static int return_val_size
;
3220 static int return_val_index
;
3221 static char **return_val
;
3223 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3225 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
3226 /* Put only the mangled name on the list. */ \
3227 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3228 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3229 completion_list_add_name \
3230 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3232 completion_list_add_name \
3233 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3236 /* Test to see if the symbol specified by SYMNAME (which is already
3237 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3238 characters. If so, add it to the current completion list. */
3241 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3242 char *text
, char *word
)
3247 /* clip symbols that cannot match */
3249 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3254 /* We have a match for a completion, so add SYMNAME to the current list
3255 of matches. Note that the name is moved to freshly malloc'd space. */
3259 if (word
== sym_text
)
3261 new = xmalloc (strlen (symname
) + 5);
3262 strcpy (new, symname
);
3264 else if (word
> sym_text
)
3266 /* Return some portion of symname. */
3267 new = xmalloc (strlen (symname
) + 5);
3268 strcpy (new, symname
+ (word
- sym_text
));
3272 /* Return some of SYM_TEXT plus symname. */
3273 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3274 strncpy (new, word
, sym_text
- word
);
3275 new[sym_text
- word
] = '\0';
3276 strcat (new, symname
);
3279 if (return_val_index
+ 3 > return_val_size
)
3281 newsize
= (return_val_size
*= 2) * sizeof (char *);
3282 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3284 return_val
[return_val_index
++] = new;
3285 return_val
[return_val_index
] = NULL
;
3289 /* Return a NULL terminated array of all symbols (regardless of class)
3290 which begin by matching TEXT. If the answer is no symbols, then
3291 the return value is an array which contains only a NULL pointer.
3293 Problem: All of the symbols have to be copied because readline frees them.
3294 I'm not going to worry about this; hopefully there won't be that many. */
3297 make_symbol_completion_list (char *text
, char *word
)
3299 register struct symbol
*sym
;
3300 register struct symtab
*s
;
3301 register struct partial_symtab
*ps
;
3302 register struct minimal_symbol
*msymbol
;
3303 register struct objfile
*objfile
;
3304 register struct block
*b
, *surrounding_static_block
= 0;
3306 struct partial_symbol
**psym
;
3307 /* The symbol we are completing on. Points in same buffer as text. */
3309 /* Length of sym_text. */
3312 /* Now look for the symbol we are supposed to complete on.
3313 FIXME: This should be language-specific. */
3317 char *quote_pos
= NULL
;
3319 /* First see if this is a quoted string. */
3321 for (p
= text
; *p
!= '\0'; ++p
)
3323 if (quote_found
!= '\0')
3325 if (*p
== quote_found
)
3326 /* Found close quote. */
3328 else if (*p
== '\\' && p
[1] == quote_found
)
3329 /* A backslash followed by the quote character
3330 doesn't end the string. */
3333 else if (*p
== '\'' || *p
== '"')
3339 if (quote_found
== '\'')
3340 /* A string within single quotes can be a symbol, so complete on it. */
3341 sym_text
= quote_pos
+ 1;
3342 else if (quote_found
== '"')
3343 /* A double-quoted string is never a symbol, nor does it make sense
3344 to complete it any other way. */
3346 return_val
= (char **) xmalloc (sizeof (char *));
3347 return_val
[0] = NULL
;
3352 /* It is not a quoted string. Break it based on the characters
3353 which are in symbols. */
3356 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3365 sym_text_len
= strlen (sym_text
);
3367 return_val_size
= 100;
3368 return_val_index
= 0;
3369 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3370 return_val
[0] = NULL
;
3372 /* Look through the partial symtabs for all symbols which begin
3373 by matching SYM_TEXT. Add each one that you find to the list. */
3375 ALL_PSYMTABS (objfile
, ps
)
3377 /* If the psymtab's been read in we'll get it when we search
3378 through the blockvector. */
3382 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3383 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3384 + ps
->n_global_syms
);
3387 /* If interrupted, then quit. */
3389 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3392 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3393 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3394 + ps
->n_static_syms
);
3398 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3402 /* At this point scan through the misc symbol vectors and add each
3403 symbol you find to the list. Eventually we want to ignore
3404 anything that isn't a text symbol (everything else will be
3405 handled by the psymtab code above). */
3407 ALL_MSYMBOLS (objfile
, msymbol
)
3410 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3413 /* Search upwards from currently selected frame (so that we can
3414 complete on local vars. */
3416 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3418 if (!BLOCK_SUPERBLOCK (b
))
3420 surrounding_static_block
= b
; /* For elmin of dups */
3423 /* Also catch fields of types defined in this places which match our
3424 text string. Only complete on types visible from current context. */
3426 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3428 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3429 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3431 struct type
*t
= SYMBOL_TYPE (sym
);
3432 enum type_code c
= TYPE_CODE (t
);
3434 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3436 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3438 if (TYPE_FIELD_NAME (t
, j
))
3440 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3441 sym_text
, sym_text_len
, text
, word
);
3449 /* Go through the symtabs and check the externs and statics for
3450 symbols which match. */
3452 ALL_SYMTABS (objfile
, s
)
3455 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3456 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3458 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3462 ALL_SYMTABS (objfile
, s
)
3465 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3466 /* Don't do this block twice. */
3467 if (b
== surrounding_static_block
)
3469 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3471 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3475 return (return_val
);
3478 /* Like make_symbol_completion_list, but returns a list of symbols
3479 defined in a source file FILE. */
3482 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3484 register struct symbol
*sym
;
3485 register struct symtab
*s
;
3486 register struct block
*b
;
3488 /* The symbol we are completing on. Points in same buffer as text. */
3490 /* Length of sym_text. */
3493 /* Now look for the symbol we are supposed to complete on.
3494 FIXME: This should be language-specific. */
3498 char *quote_pos
= NULL
;
3500 /* First see if this is a quoted string. */
3502 for (p
= text
; *p
!= '\0'; ++p
)
3504 if (quote_found
!= '\0')
3506 if (*p
== quote_found
)
3507 /* Found close quote. */
3509 else if (*p
== '\\' && p
[1] == quote_found
)
3510 /* A backslash followed by the quote character
3511 doesn't end the string. */
3514 else if (*p
== '\'' || *p
== '"')
3520 if (quote_found
== '\'')
3521 /* A string within single quotes can be a symbol, so complete on it. */
3522 sym_text
= quote_pos
+ 1;
3523 else if (quote_found
== '"')
3524 /* A double-quoted string is never a symbol, nor does it make sense
3525 to complete it any other way. */
3527 return_val
= (char **) xmalloc (sizeof (char *));
3528 return_val
[0] = NULL
;
3533 /* It is not a quoted string. Break it based on the characters
3534 which are in symbols. */
3537 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3546 sym_text_len
= strlen (sym_text
);
3548 return_val_size
= 10;
3549 return_val_index
= 0;
3550 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3551 return_val
[0] = NULL
;
3553 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3555 s
= lookup_symtab (srcfile
);
3558 /* Maybe they typed the file with leading directories, while the
3559 symbol tables record only its basename. */
3560 const char *tail
= lbasename (srcfile
);
3563 s
= lookup_symtab (tail
);
3566 /* If we have no symtab for that file, return an empty list. */
3568 return (return_val
);
3570 /* Go through this symtab and check the externs and statics for
3571 symbols which match. */
3573 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3574 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3576 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3579 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3580 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3582 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3585 return (return_val
);
3588 /* A helper function for make_source_files_completion_list. It adds
3589 another file name to a list of possible completions, growing the
3590 list as necessary. */
3593 add_filename_to_list (const char *fname
, char *text
, char *word
,
3594 char ***list
, int *list_used
, int *list_alloced
)
3597 size_t fnlen
= strlen (fname
);
3599 if (*list_used
+ 1 >= *list_alloced
)
3602 *list
= (char **) xrealloc ((char *) *list
,
3603 *list_alloced
* sizeof (char *));
3608 /* Return exactly fname. */
3609 new = xmalloc (fnlen
+ 5);
3610 strcpy (new, fname
);
3612 else if (word
> text
)
3614 /* Return some portion of fname. */
3615 new = xmalloc (fnlen
+ 5);
3616 strcpy (new, fname
+ (word
- text
));
3620 /* Return some of TEXT plus fname. */
3621 new = xmalloc (fnlen
+ (text
- word
) + 5);
3622 strncpy (new, word
, text
- word
);
3623 new[text
- word
] = '\0';
3624 strcat (new, fname
);
3626 (*list
)[*list_used
] = new;
3627 (*list
)[++*list_used
] = NULL
;
3631 not_interesting_fname (const char *fname
)
3633 static const char *illegal_aliens
[] = {
3634 "_globals_", /* inserted by coff_symtab_read */
3639 for (i
= 0; illegal_aliens
[i
]; i
++)
3641 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3647 /* Return a NULL terminated array of all source files whose names
3648 begin with matching TEXT. The file names are looked up in the
3649 symbol tables of this program. If the answer is no matchess, then
3650 the return value is an array which contains only a NULL pointer. */
3653 make_source_files_completion_list (char *text
, char *word
)
3655 register struct symtab
*s
;
3656 register struct partial_symtab
*ps
;
3657 register struct objfile
*objfile
;
3659 int list_alloced
= 1;
3661 size_t text_len
= strlen (text
);
3662 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3663 const char *base_name
;
3667 if (!have_full_symbols () && !have_partial_symbols ())
3670 ALL_SYMTABS (objfile
, s
)
3672 if (not_interesting_fname (s
->filename
))
3674 if (!filename_seen (s
->filename
, 1, &first
)
3675 #if HAVE_DOS_BASED_FILE_SYSTEM
3676 && strncasecmp (s
->filename
, text
, text_len
) == 0
3678 && strncmp (s
->filename
, text
, text_len
) == 0
3682 /* This file matches for a completion; add it to the current
3684 add_filename_to_list (s
->filename
, text
, word
,
3685 &list
, &list_used
, &list_alloced
);
3689 /* NOTE: We allow the user to type a base name when the
3690 debug info records leading directories, but not the other
3691 way around. This is what subroutines of breakpoint
3692 command do when they parse file names. */
3693 base_name
= lbasename (s
->filename
);
3694 if (base_name
!= s
->filename
3695 && !filename_seen (base_name
, 1, &first
)
3696 #if HAVE_DOS_BASED_FILE_SYSTEM
3697 && strncasecmp (base_name
, text
, text_len
) == 0
3699 && strncmp (base_name
, text
, text_len
) == 0
3702 add_filename_to_list (base_name
, text
, word
,
3703 &list
, &list_used
, &list_alloced
);
3707 ALL_PSYMTABS (objfile
, ps
)
3709 if (not_interesting_fname (ps
->filename
))
3713 if (!filename_seen (ps
->filename
, 1, &first
)
3714 #if HAVE_DOS_BASED_FILE_SYSTEM
3715 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3717 && strncmp (ps
->filename
, text
, text_len
) == 0
3721 /* This file matches for a completion; add it to the
3722 current list of matches. */
3723 add_filename_to_list (ps
->filename
, text
, word
,
3724 &list
, &list_used
, &list_alloced
);
3729 base_name
= lbasename (ps
->filename
);
3730 if (base_name
!= ps
->filename
3731 && !filename_seen (base_name
, 1, &first
)
3732 #if HAVE_DOS_BASED_FILE_SYSTEM
3733 && strncasecmp (base_name
, text
, text_len
) == 0
3735 && strncmp (base_name
, text
, text_len
) == 0
3738 add_filename_to_list (base_name
, text
, word
,
3739 &list
, &list_used
, &list_alloced
);
3747 /* Determine if PC is in the prologue of a function. The prologue is the area
3748 between the first instruction of a function, and the first executable line.
3749 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3751 If non-zero, func_start is where we think the prologue starts, possibly
3752 by previous examination of symbol table information.
3756 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3758 struct symtab_and_line sal
;
3759 CORE_ADDR func_addr
, func_end
;
3761 /* We have several sources of information we can consult to figure
3763 - Compilers usually emit line number info that marks the prologue
3764 as its own "source line". So the ending address of that "line"
3765 is the end of the prologue. If available, this is the most
3767 - The minimal symbols and partial symbols, which can usually tell
3768 us the starting and ending addresses of a function.
3769 - If we know the function's start address, we can call the
3770 architecture-defined SKIP_PROLOGUE function to analyze the
3771 instruction stream and guess where the prologue ends.
3772 - Our `func_start' argument; if non-zero, this is the caller's
3773 best guess as to the function's entry point. At the time of
3774 this writing, handle_inferior_event doesn't get this right, so
3775 it should be our last resort. */
3777 /* Consult the partial symbol table, to find which function
3779 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3781 CORE_ADDR prologue_end
;
3783 /* We don't even have minsym information, so fall back to using
3784 func_start, if given. */
3786 return 1; /* We *might* be in a prologue. */
3788 prologue_end
= SKIP_PROLOGUE (func_start
);
3790 return func_start
<= pc
&& pc
< prologue_end
;
3793 /* If we have line number information for the function, that's
3794 usually pretty reliable. */
3795 sal
= find_pc_line (func_addr
, 0);
3797 /* Now sal describes the source line at the function's entry point,
3798 which (by convention) is the prologue. The end of that "line",
3799 sal.end, is the end of the prologue.
3801 Note that, for functions whose source code is all on a single
3802 line, the line number information doesn't always end up this way.
3803 So we must verify that our purported end-of-prologue address is
3804 *within* the function, not at its start or end. */
3806 || sal
.end
<= func_addr
3807 || func_end
<= sal
.end
)
3809 /* We don't have any good line number info, so use the minsym
3810 information, together with the architecture-specific prologue
3812 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3814 return func_addr
<= pc
&& pc
< prologue_end
;
3817 /* We have line number info, and it looks good. */
3818 return func_addr
<= pc
&& pc
< sal
.end
;
3822 /* Begin overload resolution functions */
3825 remove_params (const char *demangled_name
)
3831 if (demangled_name
== NULL
)
3834 /* First find the end of the arg list. */
3835 argp
= strrchr (demangled_name
, ')');
3839 /* Back up to the beginning. */
3842 while (argp
-- > demangled_name
)
3846 else if (*argp
== '(')
3855 internal_error (__FILE__
, __LINE__
,
3856 "bad demangled name %s\n", demangled_name
);
3857 while (argp
[-1] == ' ' && argp
> demangled_name
)
3860 new_name
= xmalloc (argp
- demangled_name
+ 1);
3861 memcpy (new_name
, demangled_name
, argp
- demangled_name
);
3862 new_name
[argp
- demangled_name
] = '\0';
3866 /* Helper routine for make_symbol_completion_list. */
3868 static int sym_return_val_size
;
3869 static int sym_return_val_index
;
3870 static struct symbol
**sym_return_val
;
3872 /* Test to see if the symbol specified by SYMNAME (which is already
3873 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3874 characters. If so, add it to the current completion list. */
3877 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3883 /* If there is no type information, we can't do anything, so skip */
3884 if (SYMBOL_TYPE (sym
) == NULL
)
3887 /* skip any symbols that we've already considered. */
3888 for (i
= 0; i
< sym_return_val_index
; ++i
)
3889 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3892 /* Get the demangled name without parameters */
3893 sym_name
= remove_params (SYMBOL_DEMANGLED_NAME (sym
));
3897 /* skip symbols that cannot match */
3898 if (strcmp (sym_name
, oload_name
) != 0)
3906 /* We have a match for an overload instance, so add SYM to the current list
3907 * of overload instances */
3908 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3910 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3911 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3913 sym_return_val
[sym_return_val_index
++] = sym
;
3914 sym_return_val
[sym_return_val_index
] = NULL
;
3917 /* Return a null-terminated list of pointers to function symbols that
3918 * match name of the supplied symbol FSYM.
3919 * This is used in finding all overloaded instances of a function name.
3920 * This has been modified from make_symbol_completion_list. */
3924 make_symbol_overload_list (struct symbol
*fsym
)
3926 register struct symbol
*sym
;
3927 register struct symtab
*s
;
3928 register struct partial_symtab
*ps
;
3929 register struct objfile
*objfile
;
3930 register struct block
*b
, *surrounding_static_block
= 0;
3932 /* The name we are completing on. */
3933 char *oload_name
= NULL
;
3934 /* Length of name. */
3935 int oload_name_len
= 0;
3937 /* Look for the symbol we are supposed to complete on. */
3939 oload_name
= remove_params (SYMBOL_DEMANGLED_NAME (fsym
));
3942 sym_return_val_size
= 1;
3943 sym_return_val
= (struct symbol
**) xmalloc (2 * sizeof (struct symbol
*));
3944 sym_return_val
[0] = fsym
;
3945 sym_return_val
[1] = NULL
;
3947 return sym_return_val
;
3949 oload_name_len
= strlen (oload_name
);
3951 sym_return_val_size
= 100;
3952 sym_return_val_index
= 0;
3953 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3954 sym_return_val
[0] = NULL
;
3956 /* Look through the partial symtabs for all symbols which begin
3957 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3959 ALL_PSYMTABS (objfile
, ps
)
3961 struct partial_symbol
**psym
;
3963 /* If the psymtab's been read in we'll get it when we search
3964 through the blockvector. */
3968 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3969 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3970 + ps
->n_global_syms
);
3973 /* If interrupted, then quit. */
3975 /* This will cause the symbol table to be read if it has not yet been */
3976 s
= PSYMTAB_TO_SYMTAB (ps
);
3979 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3980 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3981 + ps
->n_static_syms
);
3985 /* This will cause the symbol table to be read if it has not yet been */
3986 s
= PSYMTAB_TO_SYMTAB (ps
);
3990 /* Search upwards from currently selected frame (so that we can
3991 complete on local vars. */
3993 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3995 if (!BLOCK_SUPERBLOCK (b
))
3997 surrounding_static_block
= b
; /* For elimination of dups */
4000 /* Also catch fields of types defined in this places which match our
4001 text string. Only complete on types visible from current context. */
4003 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4005 overload_list_add_symbol (sym
, oload_name
);
4009 /* Go through the symtabs and check the externs and statics for
4010 symbols which match. */
4012 ALL_SYMTABS (objfile
, s
)
4015 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4016 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4018 overload_list_add_symbol (sym
, oload_name
);
4022 ALL_SYMTABS (objfile
, s
)
4025 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4026 /* Don't do this block twice. */
4027 if (b
== surrounding_static_block
)
4029 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
4031 overload_list_add_symbol (sym
, oload_name
);
4037 return (sym_return_val
);
4040 /* End of overload resolution functions */
4042 struct symtabs_and_lines
4043 decode_line_spec (char *string
, int funfirstline
)
4045 struct symtabs_and_lines sals
;
4046 struct symtab_and_line cursal
;
4049 error ("Empty line specification.");
4051 /* We use whatever is set as the current source line. We do not try
4052 and get a default or it will recursively call us! */
4053 cursal
= get_current_source_symtab_and_line ();
4055 sals
= decode_line_1 (&string
, funfirstline
,
4056 cursal
.symtab
, cursal
.line
,
4060 error ("Junk at end of line specification: %s", string
);
4065 static char *name_of_main
;
4068 set_main_name (const char *name
)
4070 if (name_of_main
!= NULL
)
4072 xfree (name_of_main
);
4073 name_of_main
= NULL
;
4077 name_of_main
= xstrdup (name
);
4084 if (name_of_main
!= NULL
)
4085 return name_of_main
;
4092 _initialize_symtab (void)
4094 add_info ("variables", variables_info
,
4095 "All global and static variable names, or those matching REGEXP.");
4097 add_com ("whereis", class_info
, variables_info
,
4098 "All global and static variable names, or those matching REGEXP.");
4100 add_info ("functions", functions_info
,
4101 "All function names, or those matching REGEXP.");
4104 /* FIXME: This command has at least the following problems:
4105 1. It prints builtin types (in a very strange and confusing fashion).
4106 2. It doesn't print right, e.g. with
4107 typedef struct foo *FOO
4108 type_print prints "FOO" when we want to make it (in this situation)
4109 print "struct foo *".
4110 I also think "ptype" or "whatis" is more likely to be useful (but if
4111 there is much disagreement "info types" can be fixed). */
4112 add_info ("types", types_info
,
4113 "All type names, or those matching REGEXP.");
4115 add_info ("sources", sources_info
,
4116 "Source files in the program.");
4118 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4119 "Set a breakpoint for all functions matching REGEXP.");
4123 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4124 add_com ("lg", class_info
, variables_info
,
4125 "All global and static variable names, or those matching REGEXP.");
4128 /* Initialize the one built-in type that isn't language dependent... */
4129 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4130 "<unknown type>", (struct objfile
*) NULL
);