1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
5 Free Software Foundation, Inc.
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., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
42 #include "filenames.h" /* for FILENAME_CMP */
43 #include "objc-lang.h"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
59 #include "gdb_assert.h"
61 /* Prototypes for local functions */
63 static void completion_list_add_name (char *, char *, int, char *, char *);
65 static void rbreak_command (char *, int);
67 static void types_info (char *, int);
69 static void functions_info (char *, int);
71 static void variables_info (char *, int);
73 static void sources_info (char *, int);
75 static void output_source_filename (const char *, int *);
77 static int find_line_common (struct linetable
*, int, int *);
79 /* This one is used by linespec.c */
81 char *operator_chars (char *p
, char **end
);
83 static struct symbol
*lookup_symbol_aux (const char *name
,
84 const char *linkage_name
,
85 const struct block
*block
,
86 const domain_enum domain
,
87 int *is_a_field_of_this
,
88 struct symtab
**symtab
);
91 struct symbol
*lookup_symbol_aux_local (const char *name
,
92 const char *linkage_name
,
93 const struct block
*block
,
94 const domain_enum domain
,
95 struct symtab
**symtab
);
98 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
100 const char *linkage_name
,
101 const domain_enum domain
,
102 struct symtab
**symtab
);
105 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
107 const char *linkage_name
,
108 const domain_enum domain
,
109 struct symtab
**symtab
);
113 struct symbol
*lookup_symbol_aux_minsyms (const char *name
,
114 const char *linkage_name
,
115 const domain_enum domain
,
116 int *is_a_field_of_this
,
117 struct symtab
**symtab
);
120 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c.
121 Signals the presence of objects compiled by HP compilers. */
122 int deprecated_hp_som_som_object_present
= 0;
124 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
126 static int file_matches (char *, char **, int);
128 static void print_symbol_info (domain_enum
,
129 struct symtab
*, struct symbol
*, int, char *);
131 static void print_msymbol_info (struct minimal_symbol
*);
133 static void symtab_symbol_info (char *, domain_enum
, int);
135 void _initialize_symtab (void);
139 /* The single non-language-specific builtin type */
140 struct type
*builtin_type_error
;
142 /* Block in which the most recently searched-for symbol was found.
143 Might be better to make this a parameter to lookup_symbol and
146 const struct block
*block_found
;
148 /* Check for a symtab of a specific name; first in symtabs, then in
149 psymtabs. *If* there is no '/' in the name, a match after a '/'
150 in the symtab filename will also work. */
153 lookup_symtab (const char *name
)
156 struct partial_symtab
*ps
;
157 struct objfile
*objfile
;
158 char *real_path
= NULL
;
159 char *full_path
= NULL
;
161 /* Here we are interested in canonicalizing an absolute path, not
162 absolutizing a relative path. */
163 if (IS_ABSOLUTE_PATH (name
))
165 full_path
= xfullpath (name
);
166 make_cleanup (xfree
, full_path
);
167 real_path
= gdb_realpath (name
);
168 make_cleanup (xfree
, real_path
);
173 /* First, search for an exact match */
175 ALL_SYMTABS (objfile
, s
)
177 if (FILENAME_CMP (name
, s
->filename
) == 0)
182 /* If the user gave us an absolute path, try to find the file in
183 this symtab and use its absolute path. */
185 if (full_path
!= NULL
)
187 const char *fp
= symtab_to_fullname (s
);
188 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
194 if (real_path
!= NULL
)
196 char *fullname
= symtab_to_fullname (s
);
197 if (fullname
!= NULL
)
199 char *rp
= gdb_realpath (fullname
);
200 make_cleanup (xfree
, rp
);
201 if (FILENAME_CMP (real_path
, rp
) == 0)
209 /* Now, search for a matching tail (only if name doesn't have any dirs) */
211 if (lbasename (name
) == name
)
212 ALL_SYMTABS (objfile
, s
)
214 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
218 /* Same search rules as above apply here, but now we look thru the
221 ps
= lookup_partial_symtab (name
);
226 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
229 s
= PSYMTAB_TO_SYMTAB (ps
);
234 /* At this point, we have located the psymtab for this file, but
235 the conversion to a symtab has failed. This usually happens
236 when we are looking up an include file. In this case,
237 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
238 been created. So, we need to run through the symtabs again in
239 order to find the file.
240 XXX - This is a crock, and should be fixed inside of the the
241 symbol parsing routines. */
245 /* Lookup the partial symbol table of a source file named NAME.
246 *If* there is no '/' in the name, a match after a '/'
247 in the psymtab filename will also work. */
249 struct partial_symtab
*
250 lookup_partial_symtab (const char *name
)
252 struct partial_symtab
*pst
;
253 struct objfile
*objfile
;
254 char *full_path
= NULL
;
255 char *real_path
= NULL
;
257 /* Here we are interested in canonicalizing an absolute path, not
258 absolutizing a relative path. */
259 if (IS_ABSOLUTE_PATH (name
))
261 full_path
= xfullpath (name
);
262 make_cleanup (xfree
, full_path
);
263 real_path
= gdb_realpath (name
);
264 make_cleanup (xfree
, real_path
);
267 ALL_PSYMTABS (objfile
, pst
)
269 if (FILENAME_CMP (name
, pst
->filename
) == 0)
274 /* If the user gave us an absolute path, try to find the file in
275 this symtab and use its absolute path. */
276 if (full_path
!= NULL
)
278 psymtab_to_fullname (pst
);
279 if (pst
->fullname
!= NULL
280 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
286 if (real_path
!= NULL
)
289 psymtab_to_fullname (pst
);
290 if (pst
->fullname
!= NULL
)
292 rp
= gdb_realpath (pst
->fullname
);
293 make_cleanup (xfree
, rp
);
295 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
302 /* Now, search for a matching tail (only if name doesn't have any dirs) */
304 if (lbasename (name
) == name
)
305 ALL_PSYMTABS (objfile
, pst
)
307 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
314 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
315 full method name, which consist of the class name (from T), the unadorned
316 method name from METHOD_ID, and the signature for the specific overload,
317 specified by SIGNATURE_ID. Note that this function is g++ specific. */
320 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
322 int mangled_name_len
;
324 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
325 struct fn_field
*method
= &f
[signature_id
];
326 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
327 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
328 char *newname
= type_name_no_tag (type
);
330 /* Does the form of physname indicate that it is the full mangled name
331 of a constructor (not just the args)? */
332 int is_full_physname_constructor
;
335 int is_destructor
= is_destructor_name (physname
);
336 /* Need a new type prefix. */
337 char *const_prefix
= method
->is_const
? "C" : "";
338 char *volatile_prefix
= method
->is_volatile
? "V" : "";
340 int len
= (newname
== NULL
? 0 : strlen (newname
));
342 /* Nothing to do if physname already contains a fully mangled v3 abi name
343 or an operator name. */
344 if ((physname
[0] == '_' && physname
[1] == 'Z')
345 || is_operator_name (field_name
))
346 return xstrdup (physname
);
348 is_full_physname_constructor
= is_constructor_name (physname
);
351 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
354 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
356 if (is_destructor
|| is_full_physname_constructor
)
358 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
359 strcpy (mangled_name
, physname
);
365 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
367 else if (physname
[0] == 't' || physname
[0] == 'Q')
369 /* The physname for template and qualified methods already includes
371 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
377 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
379 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
380 + strlen (buf
) + len
+ strlen (physname
) + 1);
383 mangled_name
= (char *) xmalloc (mangled_name_len
);
385 mangled_name
[0] = '\0';
387 strcpy (mangled_name
, field_name
);
389 strcat (mangled_name
, buf
);
390 /* If the class doesn't have a name, i.e. newname NULL, then we just
391 mangle it using 0 for the length of the class. Thus it gets mangled
392 as something starting with `::' rather than `classname::'. */
394 strcat (mangled_name
, newname
);
396 strcat (mangled_name
, physname
);
397 return (mangled_name
);
401 /* Initialize the language dependent portion of a symbol
402 depending upon the language for the symbol. */
404 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
405 enum language language
)
407 gsymbol
->language
= language
;
408 if (gsymbol
->language
== language_cplus
409 || gsymbol
->language
== language_java
410 || gsymbol
->language
== language_objc
)
412 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
416 memset (&gsymbol
->language_specific
, 0,
417 sizeof (gsymbol
->language_specific
));
421 /* Functions to initialize a symbol's mangled name. */
423 /* Create the hash table used for demangled names. Each hash entry is
424 a pair of strings; one for the mangled name and one for the demangled
425 name. The entry is hashed via just the mangled name. */
428 create_demangled_names_hash (struct objfile
*objfile
)
430 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
431 The hash table code will round this up to the next prime number.
432 Choosing a much larger table size wastes memory, and saves only about
433 1% in symbol reading. */
435 objfile
->demangled_names_hash
= htab_create_alloc
436 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
437 NULL
, xcalloc
, xfree
);
440 /* Try to determine the demangled name for a symbol, based on the
441 language of that symbol. If the language is set to language_auto,
442 it will attempt to find any demangling algorithm that works and
443 then set the language appropriately. The returned name is allocated
444 by the demangler and should be xfree'd. */
447 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
450 char *demangled
= NULL
;
452 if (gsymbol
->language
== language_unknown
)
453 gsymbol
->language
= language_auto
;
455 if (gsymbol
->language
== language_objc
456 || gsymbol
->language
== language_auto
)
459 objc_demangle (mangled
, 0);
460 if (demangled
!= NULL
)
462 gsymbol
->language
= language_objc
;
466 if (gsymbol
->language
== language_cplus
467 || gsymbol
->language
== language_auto
)
470 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
471 if (demangled
!= NULL
)
473 gsymbol
->language
= language_cplus
;
477 if (gsymbol
->language
== language_java
)
480 cplus_demangle (mangled
,
481 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
482 if (demangled
!= NULL
)
484 gsymbol
->language
= language_java
;
491 /* Set both the mangled and demangled (if any) names for GSYMBOL based
492 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
493 is used, and the memory comes from that objfile's objfile_obstack.
494 LINKAGE_NAME is copied, so the pointer can be discarded after
495 calling this function. */
497 /* We have to be careful when dealing with Java names: when we run
498 into a Java minimal symbol, we don't know it's a Java symbol, so it
499 gets demangled as a C++ name. This is unfortunate, but there's not
500 much we can do about it: but when demangling partial symbols and
501 regular symbols, we'd better not reuse the wrong demangled name.
502 (See PR gdb/1039.) We solve this by putting a distinctive prefix
503 on Java names when storing them in the hash table. */
505 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
506 don't mind the Java prefix so much: different languages have
507 different demangling requirements, so it's only natural that we
508 need to keep language data around in our demangling cache. But
509 it's not good that the minimal symbol has the wrong demangled name.
510 Unfortunately, I can't think of any easy solution to that
513 #define JAVA_PREFIX "##JAVA$$"
514 #define JAVA_PREFIX_LEN 8
517 symbol_set_names (struct general_symbol_info
*gsymbol
,
518 const char *linkage_name
, int len
, struct objfile
*objfile
)
521 /* A 0-terminated copy of the linkage name. */
522 const char *linkage_name_copy
;
523 /* A copy of the linkage name that might have a special Java prefix
524 added to it, for use when looking names up in the hash table. */
525 const char *lookup_name
;
526 /* The length of lookup_name. */
529 if (objfile
->demangled_names_hash
== NULL
)
530 create_demangled_names_hash (objfile
);
532 /* The stabs reader generally provides names that are not
533 NUL-terminated; most of the other readers don't do this, so we
534 can just use the given copy, unless we're in the Java case. */
535 if (gsymbol
->language
== language_java
)
538 lookup_len
= len
+ JAVA_PREFIX_LEN
;
540 alloc_name
= alloca (lookup_len
+ 1);
541 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
542 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
543 alloc_name
[lookup_len
] = '\0';
545 lookup_name
= alloc_name
;
546 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
548 else if (linkage_name
[len
] != '\0')
553 alloc_name
= alloca (lookup_len
+ 1);
554 memcpy (alloc_name
, linkage_name
, len
);
555 alloc_name
[lookup_len
] = '\0';
557 lookup_name
= alloc_name
;
558 linkage_name_copy
= alloc_name
;
563 lookup_name
= linkage_name
;
564 linkage_name_copy
= linkage_name
;
567 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
568 lookup_name
, INSERT
);
570 /* If this name is not in the hash table, add it. */
573 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
575 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
577 /* If there is a demangled name, place it right after the mangled name.
578 Otherwise, just place a second zero byte after the end of the mangled
580 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
581 lookup_len
+ demangled_len
+ 2);
582 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
583 if (demangled_name
!= NULL
)
585 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
586 xfree (demangled_name
);
589 (*slot
)[lookup_len
+ 1] = '\0';
592 gsymbol
->name
= *slot
+ lookup_len
- len
;
593 if ((*slot
)[lookup_len
+ 1] != '\0')
594 gsymbol
->language_specific
.cplus_specific
.demangled_name
595 = &(*slot
)[lookup_len
+ 1];
597 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
600 /* Initialize the demangled name of GSYMBOL if possible. Any required space
601 to store the name is obtained from the specified obstack. The function
602 symbol_set_names, above, should be used instead where possible for more
603 efficient memory usage. */
606 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
607 struct obstack
*obstack
)
609 char *mangled
= gsymbol
->name
;
610 char *demangled
= NULL
;
612 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
613 if (gsymbol
->language
== language_cplus
614 || gsymbol
->language
== language_java
615 || gsymbol
->language
== language_objc
)
619 gsymbol
->language_specific
.cplus_specific
.demangled_name
620 = obsavestring (demangled
, strlen (demangled
), obstack
);
624 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
628 /* Unknown language; just clean up quietly. */
634 /* Return the source code name of a symbol. In languages where
635 demangling is necessary, this is the demangled name. */
638 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
640 switch (gsymbol
->language
)
645 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
646 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
649 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
650 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
652 return ada_decode_symbol (gsymbol
);
657 return gsymbol
->name
;
660 /* Return the demangled name for a symbol based on the language for
661 that symbol. If no demangled name exists, return NULL. */
663 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
665 switch (gsymbol
->language
)
670 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
671 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
674 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
675 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
677 return ada_decode_symbol (gsymbol
);
685 /* Return the search name of a symbol---generally the demangled or
686 linkage name of the symbol, depending on how it will be searched for.
687 If there is no distinct demangled name, then returns the same value
688 (same pointer) as SYMBOL_LINKAGE_NAME. */
690 symbol_search_name (const struct general_symbol_info
*gsymbol
)
692 if (gsymbol
->language
== language_ada
)
693 return gsymbol
->name
;
695 return symbol_natural_name (gsymbol
);
698 /* Initialize the structure fields to zero values. */
700 init_sal (struct symtab_and_line
*sal
)
710 /* Return 1 if the two sections are the same, or if they could
711 plausibly be copies of each other, one in an original object
712 file and another in a separated debug file. */
715 matching_bfd_sections (asection
*first
, asection
*second
)
719 /* If they're the same section, then they match. */
723 /* If either is NULL, give up. */
724 if (first
== NULL
|| second
== NULL
)
727 /* This doesn't apply to absolute symbols. */
728 if (first
->owner
== NULL
|| second
->owner
== NULL
)
731 /* If they're in the same object file, they must be different sections. */
732 if (first
->owner
== second
->owner
)
735 /* Check whether the two sections are potentially corresponding. They must
736 have the same size, address, and name. We can't compare section indexes,
737 which would be more reliable, because some sections may have been
739 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
742 /* In-memory addresses may start at a different offset, relativize them. */
743 if (bfd_get_section_vma (first
->owner
, first
)
744 - bfd_get_start_address (first
->owner
)
745 != bfd_get_section_vma (second
->owner
, second
)
746 - bfd_get_start_address (second
->owner
))
749 if (bfd_get_section_name (first
->owner
, first
) == NULL
750 || bfd_get_section_name (second
->owner
, second
) == NULL
751 || strcmp (bfd_get_section_name (first
->owner
, first
),
752 bfd_get_section_name (second
->owner
, second
)) != 0)
755 /* Otherwise check that they are in corresponding objfiles. */
758 if (obj
->obfd
== first
->owner
)
760 gdb_assert (obj
!= NULL
);
762 if (obj
->separate_debug_objfile
!= NULL
763 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
765 if (obj
->separate_debug_objfile_backlink
!= NULL
766 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
772 /* Find which partial symtab contains PC and SECTION. Return 0 if
773 none. We return the psymtab that contains a symbol whose address
774 exactly matches PC, or, if we cannot find an exact match, the
775 psymtab that contains a symbol whose address is closest to PC. */
776 struct partial_symtab
*
777 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
779 struct partial_symtab
*pst
;
780 struct objfile
*objfile
;
781 struct minimal_symbol
*msymbol
;
783 /* If we know that this is not a text address, return failure. This is
784 necessary because we loop based on texthigh and textlow, which do
785 not include the data ranges. */
786 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
788 && (msymbol
->type
== mst_data
789 || msymbol
->type
== mst_bss
790 || msymbol
->type
== mst_abs
791 || msymbol
->type
== mst_file_data
792 || msymbol
->type
== mst_file_bss
))
795 ALL_PSYMTABS (objfile
, pst
)
797 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
799 struct partial_symtab
*tpst
;
800 struct partial_symtab
*best_pst
= pst
;
801 CORE_ADDR best_addr
= pst
->textlow
;
803 /* An objfile that has its functions reordered might have
804 many partial symbol tables containing the PC, but
805 we want the partial symbol table that contains the
806 function containing the PC. */
807 if (!(objfile
->flags
& OBJF_REORDERED
) &&
808 section
== 0) /* can't validate section this way */
814 /* The code range of partial symtabs sometimes overlap, so, in
815 the loop below, we need to check all partial symtabs and
816 find the one that fits better for the given PC address. We
817 select the partial symtab that contains a symbol whose
818 address is closest to the PC address. By closest we mean
819 that find_pc_sect_symbol returns the symbol with address
820 that is closest and still less than the given PC. */
821 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
823 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
825 struct partial_symbol
*p
;
828 /* NOTE: This assumes that every psymbol has a
829 corresponding msymbol, which is not necessarily
830 true; the debug info might be much richer than the
831 object's symbol table. */
832 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
834 && SYMBOL_VALUE_ADDRESS (p
)
835 == SYMBOL_VALUE_ADDRESS (msymbol
))
838 /* Also accept the textlow value of a psymtab as a
839 "symbol", to provide some support for partial
840 symbol tables with line information but no debug
841 symbols (e.g. those produced by an assembler). */
843 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
845 this_addr
= tpst
->textlow
;
847 /* Check whether it is closer than our current
848 BEST_ADDR. Since this symbol address is
849 necessarily lower or equal to PC, the symbol closer
850 to PC is the symbol which address is the highest.
851 This way we return the psymtab which contains such
852 best match symbol. This can help in cases where the
853 symbol information/debuginfo is not complete, like
854 for instance on IRIX6 with gcc, where no debug info
855 is emitted for statics. (See also the nodebug.exp
857 if (this_addr
> best_addr
)
859 best_addr
= this_addr
;
870 /* Find which partial symtab contains PC. Return 0 if none.
871 Backward compatibility, no section */
873 struct partial_symtab
*
874 find_pc_psymtab (CORE_ADDR pc
)
876 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
879 /* Find which partial symbol within a psymtab matches PC and SECTION.
880 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
882 struct partial_symbol
*
883 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
886 struct partial_symbol
*best
= NULL
, *p
, **pp
;
890 psymtab
= find_pc_sect_psymtab (pc
, section
);
894 /* Cope with programs that start at address 0 */
895 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
897 /* Search the global symbols as well as the static symbols, so that
898 find_pc_partial_function doesn't use a minimal symbol and thus
899 cache a bad endaddr. */
900 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
901 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
902 < psymtab
->n_global_syms
);
906 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
907 && SYMBOL_CLASS (p
) == LOC_BLOCK
908 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
909 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
910 || (psymtab
->textlow
== 0
911 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
913 if (section
) /* match on a specific section */
915 fixup_psymbol_section (p
, psymtab
->objfile
);
916 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
919 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
924 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
925 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
926 < psymtab
->n_static_syms
);
930 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
931 && SYMBOL_CLASS (p
) == LOC_BLOCK
932 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
933 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
934 || (psymtab
->textlow
== 0
935 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
937 if (section
) /* match on a specific section */
939 fixup_psymbol_section (p
, psymtab
->objfile
);
940 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
943 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
951 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
952 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
954 struct partial_symbol
*
955 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
957 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
960 /* Debug symbols usually don't have section information. We need to dig that
961 out of the minimal symbols and stash that in the debug symbol. */
964 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
966 struct minimal_symbol
*msym
;
967 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
971 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
972 ginfo
->section
= SYMBOL_SECTION (msym
);
976 /* Static, function-local variables do appear in the linker
977 (minimal) symbols, but are frequently given names that won't
978 be found via lookup_minimal_symbol(). E.g., it has been
979 observed in frv-uclinux (ELF) executables that a static,
980 function-local variable named "foo" might appear in the
981 linker symbols as "foo.6" or "foo.3". Thus, there is no
982 point in attempting to extend the lookup-by-name mechanism to
983 handle this case due to the fact that there can be multiple
986 So, instead, search the section table when lookup by name has
987 failed. The ``addr'' and ``endaddr'' fields may have already
988 been relocated. If so, the relocation offset (i.e. the
989 ANOFFSET value) needs to be subtracted from these values when
990 performing the comparison. We unconditionally subtract it,
991 because, when no relocation has been performed, the ANOFFSET
992 value will simply be zero.
994 The address of the symbol whose section we're fixing up HAS
995 NOT BEEN adjusted (relocated) yet. It can't have been since
996 the section isn't yet known and knowing the section is
997 necessary in order to add the correct relocation value. In
998 other words, we wouldn't even be in this function (attempting
999 to compute the section) if it were already known.
1001 Note that it is possible to search the minimal symbols
1002 (subtracting the relocation value if necessary) to find the
1003 matching minimal symbol, but this is overkill and much less
1004 efficient. It is not necessary to find the matching minimal
1005 symbol, only its section.
1007 Note that this technique (of doing a section table search)
1008 can fail when unrelocated section addresses overlap. For
1009 this reason, we still attempt a lookup by name prior to doing
1010 a search of the section table. */
1013 struct obj_section
*s
;
1015 addr
= ginfo
->value
.address
;
1017 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1019 int idx
= s
->the_bfd_section
->index
;
1020 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1022 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1024 ginfo
->bfd_section
= s
->the_bfd_section
;
1025 ginfo
->section
= idx
;
1033 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1038 if (SYMBOL_BFD_SECTION (sym
))
1041 fixup_section (&sym
->ginfo
, objfile
);
1046 struct partial_symbol
*
1047 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1052 if (SYMBOL_BFD_SECTION (psym
))
1055 fixup_section (&psym
->ginfo
, objfile
);
1060 /* Find the definition for a specified symbol name NAME
1061 in domain DOMAIN, visible from lexical block BLOCK.
1062 Returns the struct symbol pointer, or zero if no symbol is found.
1063 If SYMTAB is non-NULL, store the symbol table in which the
1064 symbol was found there, or NULL if not found.
1065 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1066 NAME is a field of the current implied argument `this'. If so set
1067 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1068 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1069 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1071 /* This function has a bunch of loops in it and it would seem to be
1072 attractive to put in some QUIT's (though I'm not really sure
1073 whether it can run long enough to be really important). But there
1074 are a few calls for which it would appear to be bad news to quit
1075 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1076 that there is C++ code below which can error(), but that probably
1077 doesn't affect these calls since they are looking for a known
1078 variable and thus can probably assume it will never hit the C++
1082 lookup_symbol (const char *name
, const struct block
*block
,
1083 const domain_enum domain
, int *is_a_field_of_this
,
1084 struct symtab
**symtab
)
1086 char *demangled_name
= NULL
;
1087 const char *modified_name
= NULL
;
1088 const char *mangled_name
= NULL
;
1089 int needtofreename
= 0;
1090 struct symbol
*returnval
;
1092 modified_name
= name
;
1094 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1095 we can always binary search. */
1096 if (current_language
->la_language
== language_cplus
)
1098 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1101 mangled_name
= name
;
1102 modified_name
= demangled_name
;
1106 else if (current_language
->la_language
== language_java
)
1108 demangled_name
= cplus_demangle (name
,
1109 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1112 mangled_name
= name
;
1113 modified_name
= demangled_name
;
1118 if (case_sensitivity
== case_sensitive_off
)
1123 len
= strlen (name
);
1124 copy
= (char *) alloca (len
+ 1);
1125 for (i
= 0; i
< len
; i
++)
1126 copy
[i
] = tolower (name
[i
]);
1128 modified_name
= copy
;
1131 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1132 domain
, is_a_field_of_this
, symtab
);
1134 xfree (demangled_name
);
1136 /* Override the returned symtab with the symbol's specific one. */
1137 if (returnval
!= NULL
&& symtab
!= NULL
)
1138 *symtab
= SYMBOL_SYMTAB (returnval
);
1143 /* Behave like lookup_symbol_aux except that NAME is the natural name
1144 of the symbol that we're looking for and, if LINKAGE_NAME is
1145 non-NULL, ensure that the symbol's linkage name matches as
1148 static struct symbol
*
1149 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1150 const struct block
*block
, const domain_enum domain
,
1151 int *is_a_field_of_this
, struct symtab
**symtab
)
1155 /* Make sure we do something sensible with is_a_field_of_this, since
1156 the callers that set this parameter to some non-null value will
1157 certainly use it later and expect it to be either 0 or 1.
1158 If we don't set it, the contents of is_a_field_of_this are
1160 if (is_a_field_of_this
!= NULL
)
1161 *is_a_field_of_this
= 0;
1163 /* Search specified block and its superiors. Don't search
1164 STATIC_BLOCK or GLOBAL_BLOCK. */
1166 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1171 /* If requested to do so by the caller and if appropriate for the
1172 current language, check to see if NAME is a field of `this'. */
1174 if (current_language
->la_value_of_this
!= NULL
1175 && is_a_field_of_this
!= NULL
)
1177 struct value
*v
= current_language
->la_value_of_this (0);
1179 if (v
&& check_field (v
, name
))
1181 *is_a_field_of_this
= 1;
1188 /* Now do whatever is appropriate for the current language to look
1189 up static and global variables. */
1191 sym
= current_language
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1197 /* Now search all static file-level symbols. Not strictly correct,
1198 but more useful than an error. Do the symtabs first, then check
1199 the psymtabs. If a psymtab indicates the existence of the
1200 desired name as a file-level static, then do psymtab-to-symtab
1201 conversion on the fly and return the found symbol. */
1203 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1208 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1218 /* Check to see if the symbol is defined in BLOCK or its superiors.
1219 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1221 static struct symbol
*
1222 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1223 const struct block
*block
,
1224 const domain_enum domain
,
1225 struct symtab
**symtab
)
1228 const struct block
*static_block
= block_static_block (block
);
1230 /* Check if either no block is specified or it's a global block. */
1232 if (static_block
== NULL
)
1235 while (block
!= static_block
)
1237 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1241 block
= BLOCK_SUPERBLOCK (block
);
1244 /* We've reached the static block without finding a result. */
1249 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1250 symbol, and set block_found appropriately. */
1253 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1254 const struct block
*block
,
1255 const domain_enum domain
,
1256 struct symtab
**symtab
)
1259 struct objfile
*objfile
= NULL
;
1260 struct blockvector
*bv
;
1262 struct symtab
*s
= NULL
;
1264 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1267 block_found
= block
;
1270 /* Search the list of symtabs for one which contains the
1271 address of the start of this block. */
1272 ALL_PRIMARY_SYMTABS (objfile
, s
)
1274 bv
= BLOCKVECTOR (s
);
1275 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1276 if (BLOCK_START (b
) <= BLOCK_START (block
)
1277 && BLOCK_END (b
) > BLOCK_START (block
))
1284 return fixup_symbol_section (sym
, objfile
);
1290 /* Check to see if the symbol is defined in one of the symtabs.
1291 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1292 depending on whether or not we want to search global symbols or
1295 static struct symbol
*
1296 lookup_symbol_aux_symtabs (int block_index
,
1297 const char *name
, const char *linkage_name
,
1298 const domain_enum domain
,
1299 struct symtab
**symtab
)
1302 struct objfile
*objfile
;
1303 struct blockvector
*bv
;
1304 const struct block
*block
;
1307 ALL_PRIMARY_SYMTABS (objfile
, s
)
1309 bv
= BLOCKVECTOR (s
);
1310 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1311 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1314 block_found
= block
;
1317 return fixup_symbol_section (sym
, objfile
);
1324 /* Check to see if the symbol is defined in one of the partial
1325 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1326 STATIC_BLOCK, depending on whether or not we want to search global
1327 symbols or static symbols. */
1329 static struct symbol
*
1330 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1331 const char *linkage_name
,
1332 const domain_enum domain
,
1333 struct symtab
**symtab
)
1336 struct objfile
*objfile
;
1337 struct blockvector
*bv
;
1338 const struct block
*block
;
1339 struct partial_symtab
*ps
;
1341 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1343 ALL_PSYMTABS (objfile
, ps
)
1346 && lookup_partial_symbol (ps
, name
, linkage_name
,
1347 psymtab_index
, domain
))
1349 s
= PSYMTAB_TO_SYMTAB (ps
);
1350 bv
= BLOCKVECTOR (s
);
1351 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1352 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1355 /* This shouldn't be necessary, but as a last resort try
1356 looking in the statics even though the psymtab claimed
1357 the symbol was global, or vice-versa. It's possible
1358 that the psymtab gets it wrong in some cases. */
1360 /* FIXME: carlton/2002-09-30: Should we really do that?
1361 If that happens, isn't it likely to be a GDB error, in
1362 which case we should fix the GDB error rather than
1363 silently dealing with it here? So I'd vote for
1364 removing the check for the symbol in the other
1366 block
= BLOCKVECTOR_BLOCK (bv
,
1367 block_index
== GLOBAL_BLOCK
?
1368 STATIC_BLOCK
: GLOBAL_BLOCK
);
1369 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1371 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>)."),
1372 block_index
== GLOBAL_BLOCK
? "global" : "static",
1373 name
, ps
->filename
, name
, name
);
1377 return fixup_symbol_section (sym
, objfile
);
1385 /* Check for the possibility of the symbol being a function or a
1386 mangled variable that is stored in one of the minimal symbol
1387 tables. Eventually, all global symbols might be resolved in this
1390 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1391 lookup_symbol_aux, and what are now 'return' statements within
1392 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1393 sym was NULL. As far as I can tell, this was basically accidental;
1394 it didn't happen every time that msymbol was non-NULL, but only if
1395 some additional conditions held as well, and it caused problems
1396 with HP-generated symbol tables. */
1398 /* NOTE: carlton/2003-05-14: This function was once used as part of
1399 lookup_symbol. It is currently unnecessary for correctness
1400 reasons, however, and using it doesn't seem to be any faster than
1401 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1403 static struct symbol
*
1404 lookup_symbol_aux_minsyms (const char *name
,
1405 const char *linkage_name
,
1406 const domain_enum domain
,
1407 int *is_a_field_of_this
,
1408 struct symtab
**symtab
)
1411 struct blockvector
*bv
;
1412 const struct block
*block
;
1413 struct minimal_symbol
*msymbol
;
1416 if (domain
== VAR_DOMAIN
)
1418 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1420 if (msymbol
!= NULL
)
1422 /* OK, we found a minimal symbol in spite of not finding any
1423 symbol. There are various possible explanations for
1424 this. One possibility is the symbol exists in code not
1425 compiled -g. Another possibility is that the 'psymtab'
1426 isn't doing its job. A third possibility, related to #2,
1427 is that we were confused by name-mangling. For instance,
1428 maybe the psymtab isn't doing its job because it only
1429 know about demangled names, but we were given a mangled
1432 /* We first use the address in the msymbol to try to locate
1433 the appropriate symtab. Note that find_pc_sect_symtab()
1434 has a side-effect of doing psymtab-to-symtab expansion,
1435 for the found symtab. */
1436 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1437 SYMBOL_BFD_SECTION (msymbol
));
1440 /* This is a function which has a symtab for its address. */
1441 bv
= BLOCKVECTOR (s
);
1442 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1444 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1445 `name' argument to lookup_block_symbol. But the name
1446 of a minimal symbol is always mangled, so that seems
1447 to be clearly the wrong thing to pass as the
1450 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1451 /* We kept static functions in minimal symbol table as well as
1452 in static scope. We want to find them in the symbol table. */
1455 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1456 sym
= lookup_block_symbol (block
, name
,
1457 linkage_name
, domain
);
1460 /* NOTE: carlton/2002-12-04: The following comment was
1461 taken from a time when two versions of this function
1462 were part of the body of lookup_symbol_aux: this
1463 comment was taken from the version of the function
1464 that was #ifdef HPUXHPPA, and the comment was right
1465 before the 'return NULL' part of lookup_symbol_aux.
1466 (Hence the "Fall through and return 0" comment.)
1467 Elena did some digging into the situation for
1468 Fortran, and she reports:
1470 "I asked around (thanks to Jeff Knaggs), and I think
1471 the story for Fortran goes like this:
1473 "Apparently, in older Fortrans, '_' was not part of
1474 the user namespace. g77 attached a final '_' to
1475 procedure names as the exported symbols for linkage
1476 (foo_) , but the symbols went in the debug info just
1477 like 'foo'. The rationale behind this is not
1478 completely clear, and maybe it was done to other
1479 symbols as well, not just procedures." */
1481 /* If we get here with sym == 0, the symbol was
1482 found in the minimal symbol table
1483 but not in the symtab.
1484 Fall through and return 0 to use the msymbol
1485 definition of "foo_".
1486 (Note that outer code generally follows up a call
1487 to this routine with a call to lookup_minimal_symbol(),
1488 so a 0 return means we'll just flow into that other routine).
1490 This happens for Fortran "foo_" symbols,
1491 which are "foo" in the symtab.
1493 This can also happen if "asm" is used to make a
1494 regular symbol but not a debugging symbol, e.g.
1495 asm(".globl _main");
1499 if (symtab
!= NULL
&& sym
!= NULL
)
1501 return fixup_symbol_section (sym
, s
->objfile
);
1510 /* A default version of lookup_symbol_nonlocal for use by languages
1511 that can't think of anything better to do. This implements the C
1515 basic_lookup_symbol_nonlocal (const char *name
,
1516 const char *linkage_name
,
1517 const struct block
*block
,
1518 const domain_enum domain
,
1519 struct symtab
**symtab
)
1523 /* NOTE: carlton/2003-05-19: The comments below were written when
1524 this (or what turned into this) was part of lookup_symbol_aux;
1525 I'm much less worried about these questions now, since these
1526 decisions have turned out well, but I leave these comments here
1529 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1530 not it would be appropriate to search the current global block
1531 here as well. (That's what this code used to do before the
1532 is_a_field_of_this check was moved up.) On the one hand, it's
1533 redundant with the lookup_symbol_aux_symtabs search that happens
1534 next. On the other hand, if decode_line_1 is passed an argument
1535 like filename:var, then the user presumably wants 'var' to be
1536 searched for in filename. On the third hand, there shouldn't be
1537 multiple global variables all of which are named 'var', and it's
1538 not like decode_line_1 has ever restricted its search to only
1539 global variables in a single filename. All in all, only
1540 searching the static block here seems best: it's correct and it's
1543 /* NOTE: carlton/2002-12-05: There's also a possible performance
1544 issue here: if you usually search for global symbols in the
1545 current file, then it would be slightly better to search the
1546 current global block before searching all the symtabs. But there
1547 are other factors that have a much greater effect on performance
1548 than that one, so I don't think we should worry about that for
1551 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1555 return lookup_symbol_global (name
, linkage_name
, domain
, symtab
);
1558 /* Lookup a symbol in the static block associated to BLOCK, if there
1559 is one; do nothing if BLOCK is NULL or a global block. */
1562 lookup_symbol_static (const char *name
,
1563 const char *linkage_name
,
1564 const struct block
*block
,
1565 const domain_enum domain
,
1566 struct symtab
**symtab
)
1568 const struct block
*static_block
= block_static_block (block
);
1570 if (static_block
!= NULL
)
1571 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1577 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1581 lookup_symbol_global (const char *name
,
1582 const char *linkage_name
,
1583 const domain_enum domain
,
1584 struct symtab
**symtab
)
1588 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1593 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1597 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1598 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1599 linkage name matches it. Check the global symbols if GLOBAL, the
1600 static symbols if not */
1602 struct partial_symbol
*
1603 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1604 const char *linkage_name
, int global
,
1607 struct partial_symbol
*temp
;
1608 struct partial_symbol
**start
, **psym
;
1609 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1610 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1611 int do_linear_search
= 1;
1618 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1619 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1621 if (global
) /* This means we can use a binary search. */
1623 do_linear_search
= 0;
1625 /* Binary search. This search is guaranteed to end with center
1626 pointing at the earliest partial symbol whose name might be
1627 correct. At that point *all* partial symbols with an
1628 appropriate name will be checked against the correct
1632 top
= start
+ length
- 1;
1634 while (top
> bottom
)
1636 center
= bottom
+ (top
- bottom
) / 2;
1637 if (!(center
< top
))
1638 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1639 if (!do_linear_search
1640 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1642 do_linear_search
= 1;
1644 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1650 bottom
= center
+ 1;
1653 if (!(top
== bottom
))
1654 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1656 while (top
<= real_top
1657 && (linkage_name
!= NULL
1658 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1659 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1661 if (SYMBOL_DOMAIN (*top
) == domain
)
1669 /* Can't use a binary search or else we found during the binary search that
1670 we should also do a linear search. */
1672 if (do_linear_search
)
1674 for (psym
= start
; psym
< start
+ length
; psym
++)
1676 if (domain
== SYMBOL_DOMAIN (*psym
))
1678 if (linkage_name
!= NULL
1679 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1680 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1691 /* Look up a type named NAME in the struct_domain. The type returned
1692 must not be opaque -- i.e., must have at least one field
1696 lookup_transparent_type (const char *name
)
1698 return current_language
->la_lookup_transparent_type (name
);
1701 /* The standard implementation of lookup_transparent_type. This code
1702 was modeled on lookup_symbol -- the parts not relevant to looking
1703 up types were just left out. In particular it's assumed here that
1704 types are available in struct_domain and only at file-static or
1708 basic_lookup_transparent_type (const char *name
)
1711 struct symtab
*s
= NULL
;
1712 struct partial_symtab
*ps
;
1713 struct blockvector
*bv
;
1714 struct objfile
*objfile
;
1715 struct block
*block
;
1717 /* Now search all the global symbols. Do the symtab's first, then
1718 check the psymtab's. If a psymtab indicates the existence
1719 of the desired name as a global, then do psymtab-to-symtab
1720 conversion on the fly and return the found symbol. */
1722 ALL_PRIMARY_SYMTABS (objfile
, s
)
1724 bv
= BLOCKVECTOR (s
);
1725 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1726 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1727 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1729 return SYMBOL_TYPE (sym
);
1733 ALL_PSYMTABS (objfile
, ps
)
1735 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1738 s
= PSYMTAB_TO_SYMTAB (ps
);
1739 bv
= BLOCKVECTOR (s
);
1740 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1741 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1744 /* This shouldn't be necessary, but as a last resort
1745 * try looking in the statics even though the psymtab
1746 * claimed the symbol was global. It's possible that
1747 * the psymtab gets it wrong in some cases.
1749 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1750 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1752 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1753 %s may be an inlined function, or may be a template function\n\
1754 (if a template, try specifying an instantiation: %s<type>)."),
1755 name
, ps
->filename
, name
, name
);
1757 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1758 return SYMBOL_TYPE (sym
);
1762 /* Now search the static file-level symbols.
1763 Not strictly correct, but more useful than an error.
1764 Do the symtab's first, then
1765 check the psymtab's. If a psymtab indicates the existence
1766 of the desired name as a file-level static, then do psymtab-to-symtab
1767 conversion on the fly and return the found symbol.
1770 ALL_PRIMARY_SYMTABS (objfile
, s
)
1772 bv
= BLOCKVECTOR (s
);
1773 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1774 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1775 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1777 return SYMBOL_TYPE (sym
);
1781 ALL_PSYMTABS (objfile
, ps
)
1783 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1785 s
= PSYMTAB_TO_SYMTAB (ps
);
1786 bv
= BLOCKVECTOR (s
);
1787 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1788 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1791 /* This shouldn't be necessary, but as a last resort
1792 * try looking in the globals even though the psymtab
1793 * claimed the symbol was static. It's possible that
1794 * the psymtab gets it wrong in some cases.
1796 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1797 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1799 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1800 %s may be an inlined function, or may be a template function\n\
1801 (if a template, try specifying an instantiation: %s<type>)."),
1802 name
, ps
->filename
, name
, name
);
1804 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1805 return SYMBOL_TYPE (sym
);
1808 return (struct type
*) 0;
1812 /* Find the psymtab containing main(). */
1813 /* FIXME: What about languages without main() or specially linked
1814 executables that have no main() ? */
1816 struct partial_symtab
*
1817 find_main_psymtab (void)
1819 struct partial_symtab
*pst
;
1820 struct objfile
*objfile
;
1822 ALL_PSYMTABS (objfile
, pst
)
1824 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1832 /* Search BLOCK for symbol NAME in DOMAIN.
1834 Note that if NAME is the demangled form of a C++ symbol, we will fail
1835 to find a match during the binary search of the non-encoded names, but
1836 for now we don't worry about the slight inefficiency of looking for
1837 a match we'll never find, since it will go pretty quick. Once the
1838 binary search terminates, we drop through and do a straight linear
1839 search on the symbols. Each symbol which is marked as being a ObjC/C++
1840 symbol (language_cplus or language_objc set) has both the encoded and
1841 non-encoded names tested for a match.
1843 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1844 particular mangled name.
1848 lookup_block_symbol (const struct block
*block
, const char *name
,
1849 const char *linkage_name
,
1850 const domain_enum domain
)
1852 struct dict_iterator iter
;
1855 if (!BLOCK_FUNCTION (block
))
1857 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1859 sym
= dict_iter_name_next (name
, &iter
))
1861 if (SYMBOL_DOMAIN (sym
) == domain
1862 && (linkage_name
!= NULL
1863 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1870 /* Note that parameter symbols do not always show up last in the
1871 list; this loop makes sure to take anything else other than
1872 parameter symbols first; it only uses parameter symbols as a
1873 last resort. Note that this only takes up extra computation
1876 struct symbol
*sym_found
= NULL
;
1878 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1880 sym
= dict_iter_name_next (name
, &iter
))
1882 if (SYMBOL_DOMAIN (sym
) == domain
1883 && (linkage_name
!= NULL
1884 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1887 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1888 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1889 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1890 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1891 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1892 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1893 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1899 return (sym_found
); /* Will be NULL if not found. */
1903 /* Find the symtab associated with PC and SECTION. Look through the
1904 psymtabs and read in another symtab if necessary. */
1907 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1910 struct blockvector
*bv
;
1911 struct symtab
*s
= NULL
;
1912 struct symtab
*best_s
= NULL
;
1913 struct partial_symtab
*ps
;
1914 struct objfile
*objfile
;
1915 CORE_ADDR distance
= 0;
1916 struct minimal_symbol
*msymbol
;
1918 /* If we know that this is not a text address, return failure. This is
1919 necessary because we loop based on the block's high and low code
1920 addresses, which do not include the data ranges, and because
1921 we call find_pc_sect_psymtab which has a similar restriction based
1922 on the partial_symtab's texthigh and textlow. */
1923 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1925 && (msymbol
->type
== mst_data
1926 || msymbol
->type
== mst_bss
1927 || msymbol
->type
== mst_abs
1928 || msymbol
->type
== mst_file_data
1929 || msymbol
->type
== mst_file_bss
))
1932 /* Search all symtabs for the one whose file contains our address, and which
1933 is the smallest of all the ones containing the address. This is designed
1934 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1935 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1936 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1938 This happens for native ecoff format, where code from included files
1939 gets its own symtab. The symtab for the included file should have
1940 been read in already via the dependency mechanism.
1941 It might be swifter to create several symtabs with the same name
1942 like xcoff does (I'm not sure).
1944 It also happens for objfiles that have their functions reordered.
1945 For these, the symtab we are looking for is not necessarily read in. */
1947 ALL_PRIMARY_SYMTABS (objfile
, s
)
1949 bv
= BLOCKVECTOR (s
);
1950 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1952 if (BLOCK_START (b
) <= pc
1953 && BLOCK_END (b
) > pc
1955 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1957 /* For an objfile that has its functions reordered,
1958 find_pc_psymtab will find the proper partial symbol table
1959 and we simply return its corresponding symtab. */
1960 /* In order to better support objfiles that contain both
1961 stabs and coff debugging info, we continue on if a psymtab
1963 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1965 ps
= find_pc_sect_psymtab (pc
, section
);
1967 return PSYMTAB_TO_SYMTAB (ps
);
1971 struct dict_iterator iter
;
1972 struct symbol
*sym
= NULL
;
1974 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1976 fixup_symbol_section (sym
, objfile
);
1977 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
1981 continue; /* no symbol in this symtab matches section */
1983 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1992 ps
= find_pc_sect_psymtab (pc
, section
);
1996 /* Might want to error() here (in case symtab is corrupt and
1997 will cause a core dump), but maybe we can successfully
1998 continue, so let's not. */
2000 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
2002 s
= PSYMTAB_TO_SYMTAB (ps
);
2007 /* Find the symtab associated with PC. Look through the psymtabs and
2008 read in another symtab if necessary. Backward compatibility, no section */
2011 find_pc_symtab (CORE_ADDR pc
)
2013 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2017 /* Find the source file and line number for a given PC value and SECTION.
2018 Return a structure containing a symtab pointer, a line number,
2019 and a pc range for the entire source line.
2020 The value's .pc field is NOT the specified pc.
2021 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2022 use the line that ends there. Otherwise, in that case, the line
2023 that begins there is used. */
2025 /* The big complication here is that a line may start in one file, and end just
2026 before the start of another file. This usually occurs when you #include
2027 code in the middle of a subroutine. To properly find the end of a line's PC
2028 range, we must search all symtabs associated with this compilation unit, and
2029 find the one whose first PC is closer than that of the next line in this
2032 /* If it's worth the effort, we could be using a binary search. */
2034 struct symtab_and_line
2035 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2038 struct linetable
*l
;
2041 struct linetable_entry
*item
;
2042 struct symtab_and_line val
;
2043 struct blockvector
*bv
;
2044 struct minimal_symbol
*msymbol
;
2045 struct minimal_symbol
*mfunsym
;
2047 /* Info on best line seen so far, and where it starts, and its file. */
2049 struct linetable_entry
*best
= NULL
;
2050 CORE_ADDR best_end
= 0;
2051 struct symtab
*best_symtab
= 0;
2053 /* Store here the first line number
2054 of a file which contains the line at the smallest pc after PC.
2055 If we don't find a line whose range contains PC,
2056 we will use a line one less than this,
2057 with a range from the start of that file to the first line's pc. */
2058 struct linetable_entry
*alt
= NULL
;
2059 struct symtab
*alt_symtab
= 0;
2061 /* Info on best line seen in this file. */
2063 struct linetable_entry
*prev
;
2065 /* If this pc is not from the current frame,
2066 it is the address of the end of a call instruction.
2067 Quite likely that is the start of the following statement.
2068 But what we want is the statement containing the instruction.
2069 Fudge the pc to make sure we get that. */
2071 init_sal (&val
); /* initialize to zeroes */
2073 /* It's tempting to assume that, if we can't find debugging info for
2074 any function enclosing PC, that we shouldn't search for line
2075 number info, either. However, GAS can emit line number info for
2076 assembly files --- very helpful when debugging hand-written
2077 assembly code. In such a case, we'd have no debug info for the
2078 function, but we would have line info. */
2083 /* elz: added this because this function returned the wrong
2084 information if the pc belongs to a stub (import/export)
2085 to call a shlib function. This stub would be anywhere between
2086 two functions in the target, and the line info was erroneously
2087 taken to be the one of the line before the pc.
2089 /* RT: Further explanation:
2091 * We have stubs (trampolines) inserted between procedures.
2093 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2094 * exists in the main image.
2096 * In the minimal symbol table, we have a bunch of symbols
2097 * sorted by start address. The stubs are marked as "trampoline",
2098 * the others appear as text. E.g.:
2100 * Minimal symbol table for main image
2101 * main: code for main (text symbol)
2102 * shr1: stub (trampoline symbol)
2103 * foo: code for foo (text symbol)
2105 * Minimal symbol table for "shr1" image:
2107 * shr1: code for shr1 (text symbol)
2110 * So the code below is trying to detect if we are in the stub
2111 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2112 * and if found, do the symbolization from the real-code address
2113 * rather than the stub address.
2115 * Assumptions being made about the minimal symbol table:
2116 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2117 * if we're really in the trampoline. If we're beyond it (say
2118 * we're in "foo" in the above example), it'll have a closer
2119 * symbol (the "foo" text symbol for example) and will not
2120 * return the trampoline.
2121 * 2. lookup_minimal_symbol_text() will find a real text symbol
2122 * corresponding to the trampoline, and whose address will
2123 * be different than the trampoline address. I put in a sanity
2124 * check for the address being the same, to avoid an
2125 * infinite recursion.
2127 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2128 if (msymbol
!= NULL
)
2129 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2131 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2133 if (mfunsym
== NULL
)
2134 /* I eliminated this warning since it is coming out
2135 * in the following situation:
2136 * gdb shmain // test program with shared libraries
2137 * (gdb) break shr1 // function in shared lib
2138 * Warning: In stub for ...
2139 * In the above situation, the shared lib is not loaded yet,
2140 * so of course we can't find the real func/line info,
2141 * but the "break" still works, and the warning is annoying.
2142 * So I commented out the warning. RT */
2143 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2145 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
2146 /* Avoid infinite recursion */
2147 /* See above comment about why warning is commented out */
2148 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2151 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
2155 s
= find_pc_sect_symtab (pc
, section
);
2158 /* if no symbol information, return previous pc */
2165 bv
= BLOCKVECTOR (s
);
2167 /* Look at all the symtabs that share this blockvector.
2168 They all have the same apriori range, that we found was right;
2169 but they have different line tables. */
2171 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2173 /* Find the best line in this symtab. */
2180 /* I think len can be zero if the symtab lacks line numbers
2181 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2182 I'm not sure which, and maybe it depends on the symbol
2188 item
= l
->item
; /* Get first line info */
2190 /* Is this file's first line closer than the first lines of other files?
2191 If so, record this file, and its first line, as best alternate. */
2192 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2198 for (i
= 0; i
< len
; i
++, item
++)
2200 /* Leave prev pointing to the linetable entry for the last line
2201 that started at or before PC. */
2208 /* At this point, prev points at the line whose start addr is <= pc, and
2209 item points at the next line. If we ran off the end of the linetable
2210 (pc >= start of the last line), then prev == item. If pc < start of
2211 the first line, prev will not be set. */
2213 /* Is this file's best line closer than the best in the other files?
2214 If so, record this file, and its best line, as best so far. Don't
2215 save prev if it represents the end of a function (i.e. line number
2216 0) instead of a real line. */
2218 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2223 /* Discard BEST_END if it's before the PC of the current BEST. */
2224 if (best_end
<= best
->pc
)
2228 /* If another line (denoted by ITEM) is in the linetable and its
2229 PC is after BEST's PC, but before the current BEST_END, then
2230 use ITEM's PC as the new best_end. */
2231 if (best
&& i
< len
&& item
->pc
> best
->pc
2232 && (best_end
== 0 || best_end
> item
->pc
))
2233 best_end
= item
->pc
;
2238 /* If we didn't find any line number info, just return zeros.
2239 We used to return alt->line - 1 here, but that could be
2240 anywhere; if we don't have line number info for this PC,
2241 don't make some up. */
2244 else if (best
->line
== 0)
2246 /* If our best fit is in a range of PC's for which no line
2247 number info is available (line number is zero) then we didn't
2248 find any valid line information. */
2253 val
.symtab
= best_symtab
;
2254 val
.line
= best
->line
;
2256 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2261 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2263 val
.section
= section
;
2267 /* Backward compatibility (no section) */
2269 struct symtab_and_line
2270 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2274 section
= find_pc_overlay (pc
);
2275 if (pc_in_unmapped_range (pc
, section
))
2276 pc
= overlay_mapped_address (pc
, section
);
2277 return find_pc_sect_line (pc
, section
, notcurrent
);
2280 /* Find line number LINE in any symtab whose name is the same as
2283 If found, return the symtab that contains the linetable in which it was
2284 found, set *INDEX to the index in the linetable of the best entry
2285 found, and set *EXACT_MATCH nonzero if the value returned is an
2288 If not found, return NULL. */
2291 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2295 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2299 struct linetable
*best_linetable
;
2300 struct symtab
*best_symtab
;
2302 /* First try looking it up in the given symtab. */
2303 best_linetable
= LINETABLE (symtab
);
2304 best_symtab
= symtab
;
2305 best_index
= find_line_common (best_linetable
, line
, &exact
);
2306 if (best_index
< 0 || !exact
)
2308 /* Didn't find an exact match. So we better keep looking for
2309 another symtab with the same name. In the case of xcoff,
2310 multiple csects for one source file (produced by IBM's FORTRAN
2311 compiler) produce multiple symtabs (this is unavoidable
2312 assuming csects can be at arbitrary places in memory and that
2313 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2315 /* BEST is the smallest linenumber > LINE so far seen,
2316 or 0 if none has been seen so far.
2317 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2320 struct objfile
*objfile
;
2323 if (best_index
>= 0)
2324 best
= best_linetable
->item
[best_index
].line
;
2328 ALL_SYMTABS (objfile
, s
)
2330 struct linetable
*l
;
2333 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2336 ind
= find_line_common (l
, line
, &exact
);
2346 if (best
== 0 || l
->item
[ind
].line
< best
)
2348 best
= l
->item
[ind
].line
;
2361 *index
= best_index
;
2363 *exact_match
= exact
;
2368 /* Set the PC value for a given source file and line number and return true.
2369 Returns zero for invalid line number (and sets the PC to 0).
2370 The source file is specified with a struct symtab. */
2373 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2375 struct linetable
*l
;
2382 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2385 l
= LINETABLE (symtab
);
2386 *pc
= l
->item
[ind
].pc
;
2393 /* Find the range of pc values in a line.
2394 Store the starting pc of the line into *STARTPTR
2395 and the ending pc (start of next line) into *ENDPTR.
2396 Returns 1 to indicate success.
2397 Returns 0 if could not find the specified line. */
2400 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2403 CORE_ADDR startaddr
;
2404 struct symtab_and_line found_sal
;
2407 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2410 /* This whole function is based on address. For example, if line 10 has
2411 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2412 "info line *0x123" should say the line goes from 0x100 to 0x200
2413 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2414 This also insures that we never give a range like "starts at 0x134
2415 and ends at 0x12c". */
2417 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2418 if (found_sal
.line
!= sal
.line
)
2420 /* The specified line (sal) has zero bytes. */
2421 *startptr
= found_sal
.pc
;
2422 *endptr
= found_sal
.pc
;
2426 *startptr
= found_sal
.pc
;
2427 *endptr
= found_sal
.end
;
2432 /* Given a line table and a line number, return the index into the line
2433 table for the pc of the nearest line whose number is >= the specified one.
2434 Return -1 if none is found. The value is >= 0 if it is an index.
2436 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2439 find_line_common (struct linetable
*l
, int lineno
,
2445 /* BEST is the smallest linenumber > LINENO so far seen,
2446 or 0 if none has been seen so far.
2447 BEST_INDEX identifies the item for it. */
2449 int best_index
= -1;
2458 for (i
= 0; i
< len
; i
++)
2460 struct linetable_entry
*item
= &(l
->item
[i
]);
2462 if (item
->line
== lineno
)
2464 /* Return the first (lowest address) entry which matches. */
2469 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2476 /* If we got here, we didn't get an exact match. */
2483 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2485 struct symtab_and_line sal
;
2486 sal
= find_pc_line (pc
, 0);
2489 return sal
.symtab
!= 0;
2492 /* Given a function symbol SYM, find the symtab and line for the start
2494 If the argument FUNFIRSTLINE is nonzero, we want the first line
2495 of real code inside the function. */
2497 struct symtab_and_line
2498 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2501 struct symtab_and_line sal
;
2503 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2504 fixup_symbol_section (sym
, NULL
);
2506 { /* skip "first line" of function (which is actually its prologue) */
2507 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2508 /* If function is in an unmapped overlay, use its unmapped LMA
2509 address, so that SKIP_PROLOGUE has something unique to work on */
2510 if (section_is_overlay (section
) &&
2511 !section_is_mapped (section
))
2512 pc
= overlay_unmapped_address (pc
, section
);
2514 pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
2515 pc
= SKIP_PROLOGUE (pc
);
2517 /* For overlays, map pc back into its mapped VMA range */
2518 pc
= overlay_mapped_address (pc
, section
);
2520 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2522 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2523 line is still part of the same function. */
2525 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2526 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2528 /* First pc of next line */
2530 /* Recalculate the line number (might not be N+1). */
2531 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2538 /* If P is of the form "operator[ \t]+..." where `...' is
2539 some legitimate operator text, return a pointer to the
2540 beginning of the substring of the operator text.
2541 Otherwise, return "". */
2543 operator_chars (char *p
, char **end
)
2546 if (strncmp (p
, "operator", 8))
2550 /* Don't get faked out by `operator' being part of a longer
2552 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2555 /* Allow some whitespace between `operator' and the operator symbol. */
2556 while (*p
== ' ' || *p
== '\t')
2559 /* Recognize 'operator TYPENAME'. */
2561 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2564 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2573 case '\\': /* regexp quoting */
2576 if (p
[2] == '=') /* 'operator\*=' */
2578 else /* 'operator\*' */
2582 else if (p
[1] == '[')
2585 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2586 else if (p
[2] == '\\' && p
[3] == ']')
2588 *end
= p
+ 4; /* 'operator\[\]' */
2592 error (_("nothing is allowed between '[' and ']'"));
2596 /* Gratuitous qoute: skip it and move on. */
2618 if (p
[0] == '-' && p
[1] == '>')
2620 /* Struct pointer member operator 'operator->'. */
2623 *end
= p
+ 3; /* 'operator->*' */
2626 else if (p
[2] == '\\')
2628 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2633 *end
= p
+ 2; /* 'operator->' */
2637 if (p
[1] == '=' || p
[1] == p
[0])
2648 error (_("`operator ()' must be specified without whitespace in `()'"));
2653 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2658 error (_("`operator []' must be specified without whitespace in `[]'"));
2662 error (_("`operator %s' not supported"), p
);
2671 /* If FILE is not already in the table of files, return zero;
2672 otherwise return non-zero. Optionally add FILE to the table if ADD
2673 is non-zero. If *FIRST is non-zero, forget the old table
2676 filename_seen (const char *file
, int add
, int *first
)
2678 /* Table of files seen so far. */
2679 static const char **tab
= NULL
;
2680 /* Allocated size of tab in elements.
2681 Start with one 256-byte block (when using GNU malloc.c).
2682 24 is the malloc overhead when range checking is in effect. */
2683 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2684 /* Current size of tab in elements. */
2685 static int tab_cur_size
;
2691 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2695 /* Is FILE in tab? */
2696 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2697 if (strcmp (*p
, file
) == 0)
2700 /* No; maybe add it to tab. */
2703 if (tab_cur_size
== tab_alloc_size
)
2705 tab_alloc_size
*= 2;
2706 tab
= (const char **) xrealloc ((char *) tab
,
2707 tab_alloc_size
* sizeof (*tab
));
2709 tab
[tab_cur_size
++] = file
;
2715 /* Slave routine for sources_info. Force line breaks at ,'s.
2716 NAME is the name to print and *FIRST is nonzero if this is the first
2717 name printed. Set *FIRST to zero. */
2719 output_source_filename (const char *name
, int *first
)
2721 /* Since a single source file can result in several partial symbol
2722 tables, we need to avoid printing it more than once. Note: if
2723 some of the psymtabs are read in and some are not, it gets
2724 printed both under "Source files for which symbols have been
2725 read" and "Source files for which symbols will be read in on
2726 demand". I consider this a reasonable way to deal with the
2727 situation. I'm not sure whether this can also happen for
2728 symtabs; it doesn't hurt to check. */
2730 /* Was NAME already seen? */
2731 if (filename_seen (name
, 1, first
))
2733 /* Yes; don't print it again. */
2736 /* No; print it and reset *FIRST. */
2743 printf_filtered (", ");
2747 fputs_filtered (name
, gdb_stdout
);
2751 sources_info (char *ignore
, int from_tty
)
2754 struct partial_symtab
*ps
;
2755 struct objfile
*objfile
;
2758 if (!have_full_symbols () && !have_partial_symbols ())
2760 error (_("No symbol table is loaded. Use the \"file\" command."));
2763 printf_filtered ("Source files for which symbols have been read in:\n\n");
2766 ALL_SYMTABS (objfile
, s
)
2768 const char *fullname
= symtab_to_fullname (s
);
2769 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2771 printf_filtered ("\n\n");
2773 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2776 ALL_PSYMTABS (objfile
, ps
)
2780 const char *fullname
= psymtab_to_fullname (ps
);
2781 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2784 printf_filtered ("\n");
2788 file_matches (char *file
, char *files
[], int nfiles
)
2792 if (file
!= NULL
&& nfiles
!= 0)
2794 for (i
= 0; i
< nfiles
; i
++)
2796 if (strcmp (files
[i
], lbasename (file
)) == 0)
2800 else if (nfiles
== 0)
2805 /* Free any memory associated with a search. */
2807 free_search_symbols (struct symbol_search
*symbols
)
2809 struct symbol_search
*p
;
2810 struct symbol_search
*next
;
2812 for (p
= symbols
; p
!= NULL
; p
= next
)
2820 do_free_search_symbols_cleanup (void *symbols
)
2822 free_search_symbols (symbols
);
2826 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2828 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2831 /* Helper function for sort_search_symbols and qsort. Can only
2832 sort symbols, not minimal symbols. */
2834 compare_search_syms (const void *sa
, const void *sb
)
2836 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2837 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2839 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2840 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2843 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2844 prevtail where it is, but update its next pointer to point to
2845 the first of the sorted symbols. */
2846 static struct symbol_search
*
2847 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2849 struct symbol_search
**symbols
, *symp
, *old_next
;
2852 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2854 symp
= prevtail
->next
;
2855 for (i
= 0; i
< nfound
; i
++)
2860 /* Generally NULL. */
2863 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2864 compare_search_syms
);
2867 for (i
= 0; i
< nfound
; i
++)
2869 symp
->next
= symbols
[i
];
2872 symp
->next
= old_next
;
2878 /* Search the symbol table for matches to the regular expression REGEXP,
2879 returning the results in *MATCHES.
2881 Only symbols of KIND are searched:
2882 FUNCTIONS_DOMAIN - search all functions
2883 TYPES_DOMAIN - search all type names
2884 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2885 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2886 and constants (enums)
2888 free_search_symbols should be called when *MATCHES is no longer needed.
2890 The results are sorted locally; each symtab's global and static blocks are
2891 separately alphabetized.
2894 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2895 struct symbol_search
**matches
)
2898 struct partial_symtab
*ps
;
2899 struct blockvector
*bv
;
2902 struct dict_iterator iter
;
2904 struct partial_symbol
**psym
;
2905 struct objfile
*objfile
;
2906 struct minimal_symbol
*msymbol
;
2909 static enum minimal_symbol_type types
[]
2911 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2912 static enum minimal_symbol_type types2
[]
2914 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2915 static enum minimal_symbol_type types3
[]
2917 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2918 static enum minimal_symbol_type types4
[]
2920 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2921 enum minimal_symbol_type ourtype
;
2922 enum minimal_symbol_type ourtype2
;
2923 enum minimal_symbol_type ourtype3
;
2924 enum minimal_symbol_type ourtype4
;
2925 struct symbol_search
*sr
;
2926 struct symbol_search
*psr
;
2927 struct symbol_search
*tail
;
2928 struct cleanup
*old_chain
= NULL
;
2930 if (kind
< VARIABLES_DOMAIN
)
2931 error (_("must search on specific domain"));
2933 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2934 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2935 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2936 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2938 sr
= *matches
= NULL
;
2943 /* Make sure spacing is right for C++ operators.
2944 This is just a courtesy to make the matching less sensitive
2945 to how many spaces the user leaves between 'operator'
2946 and <TYPENAME> or <OPERATOR>. */
2948 char *opname
= operator_chars (regexp
, &opend
);
2951 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2952 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2954 /* There should 1 space between 'operator' and 'TYPENAME'. */
2955 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2960 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2961 if (opname
[-1] == ' ')
2964 /* If wrong number of spaces, fix it. */
2967 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2968 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2973 if (0 != (val
= re_comp (regexp
)))
2974 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2977 /* Search through the partial symtabs *first* for all symbols
2978 matching the regexp. That way we don't have to reproduce all of
2979 the machinery below. */
2981 ALL_PSYMTABS (objfile
, ps
)
2983 struct partial_symbol
**bound
, **gbound
, **sbound
;
2989 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2990 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2993 /* Go through all of the symbols stored in a partial
2994 symtab in one loop. */
2995 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3000 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3002 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3013 /* If it would match (logic taken from loop below)
3014 load the file and go on to the next one. We check the
3015 filename here, but that's a bit bogus: we don't know
3016 what file it really comes from until we have full
3017 symtabs. The symbol might be in a header file included by
3018 this psymtab. This only affects Insight. */
3019 if (file_matches (ps
->filename
, files
, nfiles
)
3021 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3022 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3023 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3024 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3025 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3026 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3028 PSYMTAB_TO_SYMTAB (ps
);
3036 /* Here, we search through the minimal symbol tables for functions
3037 and variables that match, and force their symbols to be read.
3038 This is in particular necessary for demangled variable names,
3039 which are no longer put into the partial symbol tables.
3040 The symbol will then be found during the scan of symtabs below.
3042 For functions, find_pc_symtab should succeed if we have debug info
3043 for the function, for variables we have to call lookup_symbol
3044 to determine if the variable has debug info.
3045 If the lookup fails, set found_misc so that we will rescan to print
3046 any matching symbols without debug info.
3049 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3051 ALL_MSYMBOLS (objfile
, msymbol
)
3053 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3054 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3055 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3056 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3059 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3061 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3063 /* FIXME: carlton/2003-02-04: Given that the
3064 semantics of lookup_symbol keeps on changing
3065 slightly, it would be a nice idea if we had a
3066 function lookup_symbol_minsym that found the
3067 symbol associated to a given minimal symbol (if
3069 if (kind
== FUNCTIONS_DOMAIN
3070 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3071 (struct block
*) NULL
,
3073 0, (struct symtab
**) NULL
) == NULL
)
3081 ALL_PRIMARY_SYMTABS (objfile
, s
)
3083 bv
= BLOCKVECTOR (s
);
3084 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3086 struct symbol_search
*prevtail
= tail
;
3088 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3089 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3091 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3094 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3096 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3097 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3098 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3099 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3100 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3101 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3102 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3105 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3107 psr
->symtab
= real_symtab
;
3109 psr
->msymbol
= NULL
;
3121 if (prevtail
== NULL
)
3123 struct symbol_search dummy
;
3126 tail
= sort_search_symbols (&dummy
, nfound
);
3129 old_chain
= make_cleanup_free_search_symbols (sr
);
3132 tail
= sort_search_symbols (prevtail
, nfound
);
3137 /* If there are no eyes, avoid all contact. I mean, if there are
3138 no debug symbols, then print directly from the msymbol_vector. */
3140 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3142 ALL_MSYMBOLS (objfile
, msymbol
)
3144 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3145 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3146 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3147 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3150 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3152 /* Functions: Look up by address. */
3153 if (kind
!= FUNCTIONS_DOMAIN
||
3154 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3156 /* Variables/Absolutes: Look up by name */
3157 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3158 (struct block
*) NULL
, VAR_DOMAIN
,
3159 0, (struct symtab
**) NULL
) == NULL
)
3162 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3164 psr
->msymbol
= msymbol
;
3171 old_chain
= make_cleanup_free_search_symbols (sr
);
3185 discard_cleanups (old_chain
);
3188 /* Helper function for symtab_symbol_info, this function uses
3189 the data returned from search_symbols() to print information
3190 regarding the match to gdb_stdout.
3193 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3194 int block
, char *last
)
3196 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3198 fputs_filtered ("\nFile ", gdb_stdout
);
3199 fputs_filtered (s
->filename
, gdb_stdout
);
3200 fputs_filtered (":\n", gdb_stdout
);
3203 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3204 printf_filtered ("static ");
3206 /* Typedef that is not a C++ class */
3207 if (kind
== TYPES_DOMAIN
3208 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3209 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3210 /* variable, func, or typedef-that-is-c++-class */
3211 else if (kind
< TYPES_DOMAIN
||
3212 (kind
== TYPES_DOMAIN
&&
3213 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3215 type_print (SYMBOL_TYPE (sym
),
3216 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3217 ? "" : SYMBOL_PRINT_NAME (sym
)),
3220 printf_filtered (";\n");
3224 /* This help function for symtab_symbol_info() prints information
3225 for non-debugging symbols to gdb_stdout.
3228 print_msymbol_info (struct minimal_symbol
*msymbol
)
3232 if (TARGET_ADDR_BIT
<= 32)
3233 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3234 & (CORE_ADDR
) 0xffffffff,
3237 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3239 printf_filtered ("%s %s\n",
3240 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3243 /* This is the guts of the commands "info functions", "info types", and
3244 "info variables". It calls search_symbols to find all matches and then
3245 print_[m]symbol_info to print out some useful information about the
3249 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3251 static char *classnames
[]
3253 {"variable", "function", "type", "method"};
3254 struct symbol_search
*symbols
;
3255 struct symbol_search
*p
;
3256 struct cleanup
*old_chain
;
3257 char *last_filename
= NULL
;
3260 /* must make sure that if we're interrupted, symbols gets freed */
3261 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3262 old_chain
= make_cleanup_free_search_symbols (symbols
);
3264 printf_filtered (regexp
3265 ? "All %ss matching regular expression \"%s\":\n"
3266 : "All defined %ss:\n",
3267 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3269 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3273 if (p
->msymbol
!= NULL
)
3277 printf_filtered ("\nNon-debugging symbols:\n");
3280 print_msymbol_info (p
->msymbol
);
3284 print_symbol_info (kind
,
3289 last_filename
= p
->symtab
->filename
;
3293 do_cleanups (old_chain
);
3297 variables_info (char *regexp
, int from_tty
)
3299 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3303 functions_info (char *regexp
, int from_tty
)
3305 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3310 types_info (char *regexp
, int from_tty
)
3312 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3315 /* Breakpoint all functions matching regular expression. */
3318 rbreak_command_wrapper (char *regexp
, int from_tty
)
3320 rbreak_command (regexp
, from_tty
);
3324 rbreak_command (char *regexp
, int from_tty
)
3326 struct symbol_search
*ss
;
3327 struct symbol_search
*p
;
3328 struct cleanup
*old_chain
;
3330 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3331 old_chain
= make_cleanup_free_search_symbols (ss
);
3333 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3335 if (p
->msymbol
== NULL
)
3337 char *string
= alloca (strlen (p
->symtab
->filename
)
3338 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3340 strcpy (string
, p
->symtab
->filename
);
3341 strcat (string
, ":'");
3342 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3343 strcat (string
, "'");
3344 break_command (string
, from_tty
);
3345 print_symbol_info (FUNCTIONS_DOMAIN
,
3349 p
->symtab
->filename
);
3353 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3354 printf_filtered ("<function, no debug info> %s;\n",
3355 SYMBOL_PRINT_NAME (p
->msymbol
));
3359 do_cleanups (old_chain
);
3363 /* Helper routine for make_symbol_completion_list. */
3365 static int return_val_size
;
3366 static int return_val_index
;
3367 static char **return_val
;
3369 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3370 completion_list_add_name \
3371 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3373 /* Test to see if the symbol specified by SYMNAME (which is already
3374 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3375 characters. If so, add it to the current completion list. */
3378 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3379 char *text
, char *word
)
3384 /* clip symbols that cannot match */
3386 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3391 /* We have a match for a completion, so add SYMNAME to the current list
3392 of matches. Note that the name is moved to freshly malloc'd space. */
3396 if (word
== sym_text
)
3398 new = xmalloc (strlen (symname
) + 5);
3399 strcpy (new, symname
);
3401 else if (word
> sym_text
)
3403 /* Return some portion of symname. */
3404 new = xmalloc (strlen (symname
) + 5);
3405 strcpy (new, symname
+ (word
- sym_text
));
3409 /* Return some of SYM_TEXT plus symname. */
3410 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3411 strncpy (new, word
, sym_text
- word
);
3412 new[sym_text
- word
] = '\0';
3413 strcat (new, symname
);
3416 if (return_val_index
+ 3 > return_val_size
)
3418 newsize
= (return_val_size
*= 2) * sizeof (char *);
3419 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3421 return_val
[return_val_index
++] = new;
3422 return_val
[return_val_index
] = NULL
;
3426 /* ObjC: In case we are completing on a selector, look as the msymbol
3427 again and feed all the selectors into the mill. */
3430 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3431 int sym_text_len
, char *text
, char *word
)
3433 static char *tmp
= NULL
;
3434 static unsigned int tmplen
= 0;
3436 char *method
, *category
, *selector
;
3439 method
= SYMBOL_NATURAL_NAME (msymbol
);
3441 /* Is it a method? */
3442 if ((method
[0] != '-') && (method
[0] != '+'))
3445 if (sym_text
[0] == '[')
3446 /* Complete on shortened method method. */
3447 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3449 while ((strlen (method
) + 1) >= tmplen
)
3455 tmp
= xrealloc (tmp
, tmplen
);
3457 selector
= strchr (method
, ' ');
3458 if (selector
!= NULL
)
3461 category
= strchr (method
, '(');
3463 if ((category
!= NULL
) && (selector
!= NULL
))
3465 memcpy (tmp
, method
, (category
- method
));
3466 tmp
[category
- method
] = ' ';
3467 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3468 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3469 if (sym_text
[0] == '[')
3470 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3473 if (selector
!= NULL
)
3475 /* Complete on selector only. */
3476 strcpy (tmp
, selector
);
3477 tmp2
= strchr (tmp
, ']');
3481 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3485 /* Break the non-quoted text based on the characters which are in
3486 symbols. FIXME: This should probably be language-specific. */
3489 language_search_unquoted_string (char *text
, char *p
)
3491 for (; p
> text
; --p
)
3493 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3497 if ((current_language
->la_language
== language_objc
))
3499 if (p
[-1] == ':') /* might be part of a method name */
3501 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3502 p
-= 2; /* beginning of a method name */
3503 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3504 { /* might be part of a method name */
3507 /* Seeing a ' ' or a '(' is not conclusive evidence
3508 that we are in the middle of a method name. However,
3509 finding "-[" or "+[" should be pretty un-ambiguous.
3510 Unfortunately we have to find it now to decide. */
3513 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3514 t
[-1] == ' ' || t
[-1] == ':' ||
3515 t
[-1] == '(' || t
[-1] == ')')
3520 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3521 p
= t
- 2; /* method name detected */
3522 /* else we leave with p unchanged */
3532 /* Return a NULL terminated array of all symbols (regardless of class)
3533 which begin by matching TEXT. If the answer is no symbols, then
3534 the return value is an array which contains only a NULL pointer.
3536 Problem: All of the symbols have to be copied because readline frees them.
3537 I'm not going to worry about this; hopefully there won't be that many. */
3540 make_symbol_completion_list (char *text
, char *word
)
3544 struct partial_symtab
*ps
;
3545 struct minimal_symbol
*msymbol
;
3546 struct objfile
*objfile
;
3547 struct block
*b
, *surrounding_static_block
= 0;
3548 struct dict_iterator iter
;
3550 struct partial_symbol
**psym
;
3551 /* The symbol we are completing on. Points in same buffer as text. */
3553 /* Length of sym_text. */
3556 /* Now look for the symbol we are supposed to complete on.
3557 FIXME: This should be language-specific. */
3561 char *quote_pos
= NULL
;
3563 /* First see if this is a quoted string. */
3565 for (p
= text
; *p
!= '\0'; ++p
)
3567 if (quote_found
!= '\0')
3569 if (*p
== quote_found
)
3570 /* Found close quote. */
3572 else if (*p
== '\\' && p
[1] == quote_found
)
3573 /* A backslash followed by the quote character
3574 doesn't end the string. */
3577 else if (*p
== '\'' || *p
== '"')
3583 if (quote_found
== '\'')
3584 /* A string within single quotes can be a symbol, so complete on it. */
3585 sym_text
= quote_pos
+ 1;
3586 else if (quote_found
== '"')
3587 /* A double-quoted string is never a symbol, nor does it make sense
3588 to complete it any other way. */
3590 return_val
= (char **) xmalloc (sizeof (char *));
3591 return_val
[0] = NULL
;
3596 /* It is not a quoted string. Break it based on the characters
3597 which are in symbols. */
3600 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3609 sym_text_len
= strlen (sym_text
);
3611 return_val_size
= 100;
3612 return_val_index
= 0;
3613 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3614 return_val
[0] = NULL
;
3616 /* Look through the partial symtabs for all symbols which begin
3617 by matching SYM_TEXT. Add each one that you find to the list. */
3619 ALL_PSYMTABS (objfile
, ps
)
3621 /* If the psymtab's been read in we'll get it when we search
3622 through the blockvector. */
3626 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3627 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3628 + ps
->n_global_syms
);
3631 /* If interrupted, then quit. */
3633 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3636 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3637 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3638 + ps
->n_static_syms
);
3642 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3646 /* At this point scan through the misc symbol vectors and add each
3647 symbol you find to the list. Eventually we want to ignore
3648 anything that isn't a text symbol (everything else will be
3649 handled by the psymtab code above). */
3651 ALL_MSYMBOLS (objfile
, msymbol
)
3654 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3656 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3659 /* Search upwards from currently selected frame (so that we can
3660 complete on local vars. */
3662 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3664 if (!BLOCK_SUPERBLOCK (b
))
3666 surrounding_static_block
= b
; /* For elmin of dups */
3669 /* Also catch fields of types defined in this places which match our
3670 text string. Only complete on types visible from current context. */
3672 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3675 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3676 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3678 struct type
*t
= SYMBOL_TYPE (sym
);
3679 enum type_code c
= TYPE_CODE (t
);
3681 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3683 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3685 if (TYPE_FIELD_NAME (t
, j
))
3687 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3688 sym_text
, sym_text_len
, text
, word
);
3696 /* Go through the symtabs and check the externs and statics for
3697 symbols which match. */
3699 ALL_PRIMARY_SYMTABS (objfile
, s
)
3702 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3703 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3705 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3709 ALL_PRIMARY_SYMTABS (objfile
, s
)
3712 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3713 /* Don't do this block twice. */
3714 if (b
== surrounding_static_block
)
3716 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3718 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3722 return (return_val
);
3725 /* Like make_symbol_completion_list, but returns a list of symbols
3726 defined in a source file FILE. */
3729 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3734 struct dict_iterator iter
;
3735 /* The symbol we are completing on. Points in same buffer as text. */
3737 /* Length of sym_text. */
3740 /* Now look for the symbol we are supposed to complete on.
3741 FIXME: This should be language-specific. */
3745 char *quote_pos
= NULL
;
3747 /* First see if this is a quoted string. */
3749 for (p
= text
; *p
!= '\0'; ++p
)
3751 if (quote_found
!= '\0')
3753 if (*p
== quote_found
)
3754 /* Found close quote. */
3756 else if (*p
== '\\' && p
[1] == quote_found
)
3757 /* A backslash followed by the quote character
3758 doesn't end the string. */
3761 else if (*p
== '\'' || *p
== '"')
3767 if (quote_found
== '\'')
3768 /* A string within single quotes can be a symbol, so complete on it. */
3769 sym_text
= quote_pos
+ 1;
3770 else if (quote_found
== '"')
3771 /* A double-quoted string is never a symbol, nor does it make sense
3772 to complete it any other way. */
3774 return_val
= (char **) xmalloc (sizeof (char *));
3775 return_val
[0] = NULL
;
3780 /* Not a quoted string. */
3781 sym_text
= language_search_unquoted_string (text
, p
);
3785 sym_text_len
= strlen (sym_text
);
3787 return_val_size
= 10;
3788 return_val_index
= 0;
3789 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3790 return_val
[0] = NULL
;
3792 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3794 s
= lookup_symtab (srcfile
);
3797 /* Maybe they typed the file with leading directories, while the
3798 symbol tables record only its basename. */
3799 const char *tail
= lbasename (srcfile
);
3802 s
= lookup_symtab (tail
);
3805 /* If we have no symtab for that file, return an empty list. */
3807 return (return_val
);
3809 /* Go through this symtab and check the externs and statics for
3810 symbols which match. */
3812 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3813 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3815 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3818 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3819 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3821 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3824 return (return_val
);
3827 /* A helper function for make_source_files_completion_list. It adds
3828 another file name to a list of possible completions, growing the
3829 list as necessary. */
3832 add_filename_to_list (const char *fname
, char *text
, char *word
,
3833 char ***list
, int *list_used
, int *list_alloced
)
3836 size_t fnlen
= strlen (fname
);
3838 if (*list_used
+ 1 >= *list_alloced
)
3841 *list
= (char **) xrealloc ((char *) *list
,
3842 *list_alloced
* sizeof (char *));
3847 /* Return exactly fname. */
3848 new = xmalloc (fnlen
+ 5);
3849 strcpy (new, fname
);
3851 else if (word
> text
)
3853 /* Return some portion of fname. */
3854 new = xmalloc (fnlen
+ 5);
3855 strcpy (new, fname
+ (word
- text
));
3859 /* Return some of TEXT plus fname. */
3860 new = xmalloc (fnlen
+ (text
- word
) + 5);
3861 strncpy (new, word
, text
- word
);
3862 new[text
- word
] = '\0';
3863 strcat (new, fname
);
3865 (*list
)[*list_used
] = new;
3866 (*list
)[++*list_used
] = NULL
;
3870 not_interesting_fname (const char *fname
)
3872 static const char *illegal_aliens
[] = {
3873 "_globals_", /* inserted by coff_symtab_read */
3878 for (i
= 0; illegal_aliens
[i
]; i
++)
3880 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3886 /* Return a NULL terminated array of all source files whose names
3887 begin with matching TEXT. The file names are looked up in the
3888 symbol tables of this program. If the answer is no matchess, then
3889 the return value is an array which contains only a NULL pointer. */
3892 make_source_files_completion_list (char *text
, char *word
)
3895 struct partial_symtab
*ps
;
3896 struct objfile
*objfile
;
3898 int list_alloced
= 1;
3900 size_t text_len
= strlen (text
);
3901 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3902 const char *base_name
;
3906 if (!have_full_symbols () && !have_partial_symbols ())
3909 ALL_SYMTABS (objfile
, s
)
3911 if (not_interesting_fname (s
->filename
))
3913 if (!filename_seen (s
->filename
, 1, &first
)
3914 #if HAVE_DOS_BASED_FILE_SYSTEM
3915 && strncasecmp (s
->filename
, text
, text_len
) == 0
3917 && strncmp (s
->filename
, text
, text_len
) == 0
3921 /* This file matches for a completion; add it to the current
3923 add_filename_to_list (s
->filename
, text
, word
,
3924 &list
, &list_used
, &list_alloced
);
3928 /* NOTE: We allow the user to type a base name when the
3929 debug info records leading directories, but not the other
3930 way around. This is what subroutines of breakpoint
3931 command do when they parse file names. */
3932 base_name
= lbasename (s
->filename
);
3933 if (base_name
!= s
->filename
3934 && !filename_seen (base_name
, 1, &first
)
3935 #if HAVE_DOS_BASED_FILE_SYSTEM
3936 && strncasecmp (base_name
, text
, text_len
) == 0
3938 && strncmp (base_name
, text
, text_len
) == 0
3941 add_filename_to_list (base_name
, text
, word
,
3942 &list
, &list_used
, &list_alloced
);
3946 ALL_PSYMTABS (objfile
, ps
)
3948 if (not_interesting_fname (ps
->filename
))
3952 if (!filename_seen (ps
->filename
, 1, &first
)
3953 #if HAVE_DOS_BASED_FILE_SYSTEM
3954 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3956 && strncmp (ps
->filename
, text
, text_len
) == 0
3960 /* This file matches for a completion; add it to the
3961 current list of matches. */
3962 add_filename_to_list (ps
->filename
, text
, word
,
3963 &list
, &list_used
, &list_alloced
);
3968 base_name
= lbasename (ps
->filename
);
3969 if (base_name
!= ps
->filename
3970 && !filename_seen (base_name
, 1, &first
)
3971 #if HAVE_DOS_BASED_FILE_SYSTEM
3972 && strncasecmp (base_name
, text
, text_len
) == 0
3974 && strncmp (base_name
, text
, text_len
) == 0
3977 add_filename_to_list (base_name
, text
, word
,
3978 &list
, &list_used
, &list_alloced
);
3986 /* Determine if PC is in the prologue of a function. The prologue is the area
3987 between the first instruction of a function, and the first executable line.
3988 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3990 If non-zero, func_start is where we think the prologue starts, possibly
3991 by previous examination of symbol table information.
3995 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3997 struct symtab_and_line sal
;
3998 CORE_ADDR func_addr
, func_end
;
4000 /* We have several sources of information we can consult to figure
4002 - Compilers usually emit line number info that marks the prologue
4003 as its own "source line". So the ending address of that "line"
4004 is the end of the prologue. If available, this is the most
4006 - The minimal symbols and partial symbols, which can usually tell
4007 us the starting and ending addresses of a function.
4008 - If we know the function's start address, we can call the
4009 architecture-defined SKIP_PROLOGUE function to analyze the
4010 instruction stream and guess where the prologue ends.
4011 - Our `func_start' argument; if non-zero, this is the caller's
4012 best guess as to the function's entry point. At the time of
4013 this writing, handle_inferior_event doesn't get this right, so
4014 it should be our last resort. */
4016 /* Consult the partial symbol table, to find which function
4018 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4020 CORE_ADDR prologue_end
;
4022 /* We don't even have minsym information, so fall back to using
4023 func_start, if given. */
4025 return 1; /* We *might* be in a prologue. */
4027 prologue_end
= SKIP_PROLOGUE (func_start
);
4029 return func_start
<= pc
&& pc
< prologue_end
;
4032 /* If we have line number information for the function, that's
4033 usually pretty reliable. */
4034 sal
= find_pc_line (func_addr
, 0);
4036 /* Now sal describes the source line at the function's entry point,
4037 which (by convention) is the prologue. The end of that "line",
4038 sal.end, is the end of the prologue.
4040 Note that, for functions whose source code is all on a single
4041 line, the line number information doesn't always end up this way.
4042 So we must verify that our purported end-of-prologue address is
4043 *within* the function, not at its start or end. */
4045 || sal
.end
<= func_addr
4046 || func_end
<= sal
.end
)
4048 /* We don't have any good line number info, so use the minsym
4049 information, together with the architecture-specific prologue
4051 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4053 return func_addr
<= pc
&& pc
< prologue_end
;
4056 /* We have line number info, and it looks good. */
4057 return func_addr
<= pc
&& pc
< sal
.end
;
4060 /* Given PC at the function's start address, attempt to find the
4061 prologue end using SAL information. Return zero if the skip fails.
4063 A non-optimized prologue traditionally has one SAL for the function
4064 and a second for the function body. A single line function has
4065 them both pointing at the same line.
4067 An optimized prologue is similar but the prologue may contain
4068 instructions (SALs) from the instruction body. Need to skip those
4069 while not getting into the function body.
4071 The functions end point and an increasing SAL line are used as
4072 indicators of the prologue's endpoint.
4074 This code is based on the function refine_prologue_limit (versions
4075 found in both ia64 and ppc). */
4078 skip_prologue_using_sal (CORE_ADDR func_addr
)
4080 struct symtab_and_line prologue_sal
;
4084 /* Get an initial range for the function. */
4085 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4086 start_pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
4088 prologue_sal
= find_pc_line (start_pc
, 0);
4089 if (prologue_sal
.line
!= 0)
4091 /* If there is only one sal that covers the entire function,
4092 then it is probably a single line function, like
4094 if (prologue_sal
.end
== end_pc
)
4096 while (prologue_sal
.end
< end_pc
)
4098 struct symtab_and_line sal
;
4100 sal
= find_pc_line (prologue_sal
.end
, 0);
4103 /* Assume that a consecutive SAL for the same (or larger)
4104 line mark the prologue -> body transition. */
4105 if (sal
.line
>= prologue_sal
.line
)
4107 /* The case in which compiler's optimizer/scheduler has
4108 moved instructions into the prologue. We look ahead in
4109 the function looking for address ranges whose
4110 corresponding line number is less the first one that we
4111 found for the function. This is more conservative then
4112 refine_prologue_limit which scans a large number of SALs
4113 looking for any in the prologue */
4117 return prologue_sal
.end
;
4120 struct symtabs_and_lines
4121 decode_line_spec (char *string
, int funfirstline
)
4123 struct symtabs_and_lines sals
;
4124 struct symtab_and_line cursal
;
4127 error (_("Empty line specification."));
4129 /* We use whatever is set as the current source line. We do not try
4130 and get a default or it will recursively call us! */
4131 cursal
= get_current_source_symtab_and_line ();
4133 sals
= decode_line_1 (&string
, funfirstline
,
4134 cursal
.symtab
, cursal
.line
,
4135 (char ***) NULL
, NULL
);
4138 error (_("Junk at end of line specification: %s"), string
);
4143 static char *name_of_main
;
4146 set_main_name (const char *name
)
4148 if (name_of_main
!= NULL
)
4150 xfree (name_of_main
);
4151 name_of_main
= NULL
;
4155 name_of_main
= xstrdup (name
);
4159 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4163 find_main_name (void)
4165 char *new_main_name
;
4167 /* Try to see if the main procedure is in Ada. */
4168 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4169 be to add a new method in the language vector, and call this
4170 method for each language until one of them returns a non-empty
4171 name. This would allow us to remove this hard-coded call to
4172 an Ada function. It is not clear that this is a better approach
4173 at this point, because all methods need to be written in a way
4174 such that false positives never be returned. For instance, it is
4175 important that a method does not return a wrong name for the main
4176 procedure if the main procedure is actually written in a different
4177 language. It is easy to guaranty this with Ada, since we use a
4178 special symbol generated only when the main in Ada to find the name
4179 of the main procedure. It is difficult however to see how this can
4180 be guarantied for languages such as C, for instance. This suggests
4181 that order of call for these methods becomes important, which means
4182 a more complicated approach. */
4183 new_main_name
= ada_main_name ();
4184 if (new_main_name
!= NULL
)
4186 set_main_name (new_main_name
);
4190 /* The languages above didn't identify the name of the main procedure.
4191 Fallback to "main". */
4192 set_main_name ("main");
4198 if (name_of_main
== NULL
)
4201 return name_of_main
;
4204 /* Handle ``executable_changed'' events for the symtab module. */
4207 symtab_observer_executable_changed (void *unused
)
4209 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4210 set_main_name (NULL
);
4214 _initialize_symtab (void)
4216 add_info ("variables", variables_info
, _("\
4217 All global and static variable names, or those matching REGEXP."));
4219 add_com ("whereis", class_info
, variables_info
, _("\
4220 All global and static variable names, or those matching REGEXP."));
4222 add_info ("functions", functions_info
,
4223 _("All function names, or those matching REGEXP."));
4226 /* FIXME: This command has at least the following problems:
4227 1. It prints builtin types (in a very strange and confusing fashion).
4228 2. It doesn't print right, e.g. with
4229 typedef struct foo *FOO
4230 type_print prints "FOO" when we want to make it (in this situation)
4231 print "struct foo *".
4232 I also think "ptype" or "whatis" is more likely to be useful (but if
4233 there is much disagreement "info types" can be fixed). */
4234 add_info ("types", types_info
,
4235 _("All type names, or those matching REGEXP."));
4237 add_info ("sources", sources_info
,
4238 _("Source files in the program."));
4240 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4241 _("Set a breakpoint for all functions matching REGEXP."));
4245 add_com ("lf", class_info
, sources_info
,
4246 _("Source files in the program"));
4247 add_com ("lg", class_info
, variables_info
, _("\
4248 All global and static variable names, or those matching REGEXP."));
4251 /* Initialize the one built-in type that isn't language dependent... */
4252 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4253 "<unknown type>", (struct objfile
*) NULL
);
4255 observer_attach_executable_changed (symtab_observer_executable_changed
);