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, 2008
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 3 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, see <http://www.gnu.org/licenses/>. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
41 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
58 #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 enum language language
,
88 int *is_a_field_of_this
,
89 struct symtab
**symtab
);
92 struct symbol
*lookup_symbol_aux_local (const char *name
,
93 const char *linkage_name
,
94 const struct block
*block
,
95 const domain_enum domain
,
96 struct symtab
**symtab
);
99 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
101 const char *linkage_name
,
102 const domain_enum domain
,
103 struct symtab
**symtab
);
106 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
108 const char *linkage_name
,
109 const domain_enum domain
,
110 struct symtab
**symtab
);
112 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
114 static int file_matches (char *, char **, int);
116 static void print_symbol_info (domain_enum
,
117 struct symtab
*, struct symbol
*, int, char *);
119 static void print_msymbol_info (struct minimal_symbol
*);
121 static void symtab_symbol_info (char *, domain_enum
, int);
123 void _initialize_symtab (void);
127 /* Allow the user to configure the debugger behavior with respect
128 to multiple-choice menus when more than one symbol matches during
131 const char const multiple_symbols_ask
[] = "ask";
132 const char const multiple_symbols_all
[] = "all";
133 const char const multiple_symbols_cancel
[] = "cancel";
134 static const char *multiple_symbols_modes
[] =
136 multiple_symbols_ask
,
137 multiple_symbols_all
,
138 multiple_symbols_cancel
,
141 static const char *multiple_symbols_mode
= multiple_symbols_all
;
143 /* Read-only accessor to AUTO_SELECT_MODE. */
146 multiple_symbols_select_mode (void)
148 return multiple_symbols_mode
;
151 /* The single non-language-specific builtin type */
152 struct type
*builtin_type_error
;
154 /* Block in which the most recently searched-for symbol was found.
155 Might be better to make this a parameter to lookup_symbol and
158 const struct block
*block_found
;
160 /* Check for a symtab of a specific name; first in symtabs, then in
161 psymtabs. *If* there is no '/' in the name, a match after a '/'
162 in the symtab filename will also work. */
165 lookup_symtab (const char *name
)
168 struct partial_symtab
*ps
;
169 struct objfile
*objfile
;
170 char *real_path
= NULL
;
171 char *full_path
= NULL
;
173 /* Here we are interested in canonicalizing an absolute path, not
174 absolutizing a relative path. */
175 if (IS_ABSOLUTE_PATH (name
))
177 full_path
= xfullpath (name
);
178 make_cleanup (xfree
, full_path
);
179 real_path
= gdb_realpath (name
);
180 make_cleanup (xfree
, real_path
);
185 /* First, search for an exact match */
187 ALL_SYMTABS (objfile
, s
)
189 if (FILENAME_CMP (name
, s
->filename
) == 0)
194 /* If the user gave us an absolute path, try to find the file in
195 this symtab and use its absolute path. */
197 if (full_path
!= NULL
)
199 const char *fp
= symtab_to_fullname (s
);
200 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
206 if (real_path
!= NULL
)
208 char *fullname
= symtab_to_fullname (s
);
209 if (fullname
!= NULL
)
211 char *rp
= gdb_realpath (fullname
);
212 make_cleanup (xfree
, rp
);
213 if (FILENAME_CMP (real_path
, rp
) == 0)
221 /* Now, search for a matching tail (only if name doesn't have any dirs) */
223 if (lbasename (name
) == name
)
224 ALL_SYMTABS (objfile
, s
)
226 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
230 /* Same search rules as above apply here, but now we look thru the
233 ps
= lookup_partial_symtab (name
);
238 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
241 s
= PSYMTAB_TO_SYMTAB (ps
);
246 /* At this point, we have located the psymtab for this file, but
247 the conversion to a symtab has failed. This usually happens
248 when we are looking up an include file. In this case,
249 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
250 been created. So, we need to run through the symtabs again in
251 order to find the file.
252 XXX - This is a crock, and should be fixed inside of the the
253 symbol parsing routines. */
257 /* Lookup the partial symbol table of a source file named NAME.
258 *If* there is no '/' in the name, a match after a '/'
259 in the psymtab filename will also work. */
261 struct partial_symtab
*
262 lookup_partial_symtab (const char *name
)
264 struct partial_symtab
*pst
;
265 struct objfile
*objfile
;
266 char *full_path
= NULL
;
267 char *real_path
= NULL
;
269 /* Here we are interested in canonicalizing an absolute path, not
270 absolutizing a relative path. */
271 if (IS_ABSOLUTE_PATH (name
))
273 full_path
= xfullpath (name
);
274 make_cleanup (xfree
, full_path
);
275 real_path
= gdb_realpath (name
);
276 make_cleanup (xfree
, real_path
);
279 ALL_PSYMTABS (objfile
, pst
)
281 if (FILENAME_CMP (name
, pst
->filename
) == 0)
286 /* If the user gave us an absolute path, try to find the file in
287 this symtab and use its absolute path. */
288 if (full_path
!= NULL
)
290 psymtab_to_fullname (pst
);
291 if (pst
->fullname
!= NULL
292 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
298 if (real_path
!= NULL
)
301 psymtab_to_fullname (pst
);
302 if (pst
->fullname
!= NULL
)
304 rp
= gdb_realpath (pst
->fullname
);
305 make_cleanup (xfree
, rp
);
307 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
314 /* Now, search for a matching tail (only if name doesn't have any dirs) */
316 if (lbasename (name
) == name
)
317 ALL_PSYMTABS (objfile
, pst
)
319 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
326 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
327 full method name, which consist of the class name (from T), the unadorned
328 method name from METHOD_ID, and the signature for the specific overload,
329 specified by SIGNATURE_ID. Note that this function is g++ specific. */
332 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
334 int mangled_name_len
;
336 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
337 struct fn_field
*method
= &f
[signature_id
];
338 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
339 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
340 char *newname
= type_name_no_tag (type
);
342 /* Does the form of physname indicate that it is the full mangled name
343 of a constructor (not just the args)? */
344 int is_full_physname_constructor
;
347 int is_destructor
= is_destructor_name (physname
);
348 /* Need a new type prefix. */
349 char *const_prefix
= method
->is_const
? "C" : "";
350 char *volatile_prefix
= method
->is_volatile
? "V" : "";
352 int len
= (newname
== NULL
? 0 : strlen (newname
));
354 /* Nothing to do if physname already contains a fully mangled v3 abi name
355 or an operator name. */
356 if ((physname
[0] == '_' && physname
[1] == 'Z')
357 || is_operator_name (field_name
))
358 return xstrdup (physname
);
360 is_full_physname_constructor
= is_constructor_name (physname
);
363 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
366 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
368 if (is_destructor
|| is_full_physname_constructor
)
370 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
371 strcpy (mangled_name
, physname
);
377 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
379 else if (physname
[0] == 't' || physname
[0] == 'Q')
381 /* The physname for template and qualified methods already includes
383 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
389 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
391 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
392 + strlen (buf
) + len
+ strlen (physname
) + 1);
395 mangled_name
= (char *) xmalloc (mangled_name_len
);
397 mangled_name
[0] = '\0';
399 strcpy (mangled_name
, field_name
);
401 strcat (mangled_name
, buf
);
402 /* If the class doesn't have a name, i.e. newname NULL, then we just
403 mangle it using 0 for the length of the class. Thus it gets mangled
404 as something starting with `::' rather than `classname::'. */
406 strcat (mangled_name
, newname
);
408 strcat (mangled_name
, physname
);
409 return (mangled_name
);
413 /* Initialize the language dependent portion of a symbol
414 depending upon the language for the symbol. */
416 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
417 enum language language
)
419 gsymbol
->language
= language
;
420 if (gsymbol
->language
== language_cplus
421 || gsymbol
->language
== language_java
422 || gsymbol
->language
== language_objc
)
424 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
428 memset (&gsymbol
->language_specific
, 0,
429 sizeof (gsymbol
->language_specific
));
433 /* Functions to initialize a symbol's mangled name. */
435 /* Create the hash table used for demangled names. Each hash entry is
436 a pair of strings; one for the mangled name and one for the demangled
437 name. The entry is hashed via just the mangled name. */
440 create_demangled_names_hash (struct objfile
*objfile
)
442 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
443 The hash table code will round this up to the next prime number.
444 Choosing a much larger table size wastes memory, and saves only about
445 1% in symbol reading. */
447 objfile
->demangled_names_hash
= htab_create_alloc
448 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
449 NULL
, xcalloc
, xfree
);
452 /* Try to determine the demangled name for a symbol, based on the
453 language of that symbol. If the language is set to language_auto,
454 it will attempt to find any demangling algorithm that works and
455 then set the language appropriately. The returned name is allocated
456 by the demangler and should be xfree'd. */
459 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
462 char *demangled
= NULL
;
464 if (gsymbol
->language
== language_unknown
)
465 gsymbol
->language
= language_auto
;
467 if (gsymbol
->language
== language_objc
468 || gsymbol
->language
== language_auto
)
471 objc_demangle (mangled
, 0);
472 if (demangled
!= NULL
)
474 gsymbol
->language
= language_objc
;
478 if (gsymbol
->language
== language_cplus
479 || gsymbol
->language
== language_auto
)
482 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
483 if (demangled
!= NULL
)
485 gsymbol
->language
= language_cplus
;
489 if (gsymbol
->language
== language_java
)
492 cplus_demangle (mangled
,
493 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
494 if (demangled
!= NULL
)
496 gsymbol
->language
= language_java
;
503 /* Set both the mangled and demangled (if any) names for GSYMBOL based
504 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
505 is used, and the memory comes from that objfile's objfile_obstack.
506 LINKAGE_NAME is copied, so the pointer can be discarded after
507 calling this function. */
509 /* We have to be careful when dealing with Java names: when we run
510 into a Java minimal symbol, we don't know it's a Java symbol, so it
511 gets demangled as a C++ name. This is unfortunate, but there's not
512 much we can do about it: but when demangling partial symbols and
513 regular symbols, we'd better not reuse the wrong demangled name.
514 (See PR gdb/1039.) We solve this by putting a distinctive prefix
515 on Java names when storing them in the hash table. */
517 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
518 don't mind the Java prefix so much: different languages have
519 different demangling requirements, so it's only natural that we
520 need to keep language data around in our demangling cache. But
521 it's not good that the minimal symbol has the wrong demangled name.
522 Unfortunately, I can't think of any easy solution to that
525 #define JAVA_PREFIX "##JAVA$$"
526 #define JAVA_PREFIX_LEN 8
529 symbol_set_names (struct general_symbol_info
*gsymbol
,
530 const char *linkage_name
, int len
, struct objfile
*objfile
)
533 /* A 0-terminated copy of the linkage name. */
534 const char *linkage_name_copy
;
535 /* A copy of the linkage name that might have a special Java prefix
536 added to it, for use when looking names up in the hash table. */
537 const char *lookup_name
;
538 /* The length of lookup_name. */
541 if (objfile
->demangled_names_hash
== NULL
)
542 create_demangled_names_hash (objfile
);
544 if (gsymbol
->language
== language_ada
)
546 /* In Ada, we do the symbol lookups using the mangled name, so
547 we can save some space by not storing the demangled name.
549 As a side note, we have also observed some overlap between
550 the C++ mangling and Ada mangling, similarly to what has
551 been observed with Java. Because we don't store the demangled
552 name with the symbol, we don't need to use the same trick
554 gsymbol
->name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
555 memcpy (gsymbol
->name
, linkage_name
, len
);
556 gsymbol
->name
[len
] = '\0';
557 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
562 /* The stabs reader generally provides names that are not
563 NUL-terminated; most of the other readers don't do this, so we
564 can just use the given copy, unless we're in the Java case. */
565 if (gsymbol
->language
== language_java
)
568 lookup_len
= len
+ JAVA_PREFIX_LEN
;
570 alloc_name
= alloca (lookup_len
+ 1);
571 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
572 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
573 alloc_name
[lookup_len
] = '\0';
575 lookup_name
= alloc_name
;
576 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
578 else if (linkage_name
[len
] != '\0')
583 alloc_name
= alloca (lookup_len
+ 1);
584 memcpy (alloc_name
, linkage_name
, len
);
585 alloc_name
[lookup_len
] = '\0';
587 lookup_name
= alloc_name
;
588 linkage_name_copy
= alloc_name
;
593 lookup_name
= linkage_name
;
594 linkage_name_copy
= linkage_name
;
597 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
598 lookup_name
, INSERT
);
600 /* If this name is not in the hash table, add it. */
603 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
605 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
607 /* If there is a demangled name, place it right after the mangled name.
608 Otherwise, just place a second zero byte after the end of the mangled
610 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
611 lookup_len
+ demangled_len
+ 2);
612 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
613 if (demangled_name
!= NULL
)
615 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
616 xfree (demangled_name
);
619 (*slot
)[lookup_len
+ 1] = '\0';
622 gsymbol
->name
= *slot
+ lookup_len
- len
;
623 if ((*slot
)[lookup_len
+ 1] != '\0')
624 gsymbol
->language_specific
.cplus_specific
.demangled_name
625 = &(*slot
)[lookup_len
+ 1];
627 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
630 /* Initialize the demangled name of GSYMBOL if possible. Any required space
631 to store the name is obtained from the specified obstack. The function
632 symbol_set_names, above, should be used instead where possible for more
633 efficient memory usage. */
636 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
637 struct obstack
*obstack
)
639 char *mangled
= gsymbol
->name
;
640 char *demangled
= NULL
;
642 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
643 if (gsymbol
->language
== language_cplus
644 || gsymbol
->language
== language_java
645 || gsymbol
->language
== language_objc
)
649 gsymbol
->language_specific
.cplus_specific
.demangled_name
650 = obsavestring (demangled
, strlen (demangled
), obstack
);
654 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
658 /* Unknown language; just clean up quietly. */
664 /* Return the source code name of a symbol. In languages where
665 demangling is necessary, this is the demangled name. */
668 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
670 switch (gsymbol
->language
)
675 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
676 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
679 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
680 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
682 return ada_decode_symbol (gsymbol
);
687 return gsymbol
->name
;
690 /* Return the demangled name for a symbol based on the language for
691 that symbol. If no demangled name exists, return NULL. */
693 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
695 switch (gsymbol
->language
)
700 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
701 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
704 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
705 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
707 return ada_decode_symbol (gsymbol
);
715 /* Return the search name of a symbol---generally the demangled or
716 linkage name of the symbol, depending on how it will be searched for.
717 If there is no distinct demangled name, then returns the same value
718 (same pointer) as SYMBOL_LINKAGE_NAME. */
720 symbol_search_name (const struct general_symbol_info
*gsymbol
)
722 if (gsymbol
->language
== language_ada
)
723 return gsymbol
->name
;
725 return symbol_natural_name (gsymbol
);
728 /* Initialize the structure fields to zero values. */
730 init_sal (struct symtab_and_line
*sal
)
737 sal
->explicit_pc
= 0;
738 sal
->explicit_line
= 0;
742 /* Return 1 if the two sections are the same, or if they could
743 plausibly be copies of each other, one in an original object
744 file and another in a separated debug file. */
747 matching_bfd_sections (asection
*first
, asection
*second
)
751 /* If they're the same section, then they match. */
755 /* If either is NULL, give up. */
756 if (first
== NULL
|| second
== NULL
)
759 /* This doesn't apply to absolute symbols. */
760 if (first
->owner
== NULL
|| second
->owner
== NULL
)
763 /* If they're in the same object file, they must be different sections. */
764 if (first
->owner
== second
->owner
)
767 /* Check whether the two sections are potentially corresponding. They must
768 have the same size, address, and name. We can't compare section indexes,
769 which would be more reliable, because some sections may have been
771 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
774 /* In-memory addresses may start at a different offset, relativize them. */
775 if (bfd_get_section_vma (first
->owner
, first
)
776 - bfd_get_start_address (first
->owner
)
777 != bfd_get_section_vma (second
->owner
, second
)
778 - bfd_get_start_address (second
->owner
))
781 if (bfd_get_section_name (first
->owner
, first
) == NULL
782 || bfd_get_section_name (second
->owner
, second
) == NULL
783 || strcmp (bfd_get_section_name (first
->owner
, first
),
784 bfd_get_section_name (second
->owner
, second
)) != 0)
787 /* Otherwise check that they are in corresponding objfiles. */
790 if (obj
->obfd
== first
->owner
)
792 gdb_assert (obj
!= NULL
);
794 if (obj
->separate_debug_objfile
!= NULL
795 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
797 if (obj
->separate_debug_objfile_backlink
!= NULL
798 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
804 /* Find which partial symtab contains PC and SECTION. Return 0 if
805 none. We return the psymtab that contains a symbol whose address
806 exactly matches PC, or, if we cannot find an exact match, the
807 psymtab that contains a symbol whose address is closest to PC. */
808 struct partial_symtab
*
809 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
811 struct partial_symtab
*pst
;
812 struct objfile
*objfile
;
813 struct minimal_symbol
*msymbol
;
815 /* If we know that this is not a text address, return failure. This is
816 necessary because we loop based on texthigh and textlow, which do
817 not include the data ranges. */
818 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
820 && (msymbol
->type
== mst_data
821 || msymbol
->type
== mst_bss
822 || msymbol
->type
== mst_abs
823 || msymbol
->type
== mst_file_data
824 || msymbol
->type
== mst_file_bss
))
827 ALL_PSYMTABS (objfile
, pst
)
829 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
831 struct partial_symtab
*tpst
;
832 struct partial_symtab
*best_pst
= pst
;
833 CORE_ADDR best_addr
= pst
->textlow
;
835 /* An objfile that has its functions reordered might have
836 many partial symbol tables containing the PC, but
837 we want the partial symbol table that contains the
838 function containing the PC. */
839 if (!(objfile
->flags
& OBJF_REORDERED
) &&
840 section
== 0) /* can't validate section this way */
846 /* The code range of partial symtabs sometimes overlap, so, in
847 the loop below, we need to check all partial symtabs and
848 find the one that fits better for the given PC address. We
849 select the partial symtab that contains a symbol whose
850 address is closest to the PC address. By closest we mean
851 that find_pc_sect_symbol returns the symbol with address
852 that is closest and still less than the given PC. */
853 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
855 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
857 struct partial_symbol
*p
;
860 /* NOTE: This assumes that every psymbol has a
861 corresponding msymbol, which is not necessarily
862 true; the debug info might be much richer than the
863 object's symbol table. */
864 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
866 && SYMBOL_VALUE_ADDRESS (p
)
867 == SYMBOL_VALUE_ADDRESS (msymbol
))
870 /* Also accept the textlow value of a psymtab as a
871 "symbol", to provide some support for partial
872 symbol tables with line information but no debug
873 symbols (e.g. those produced by an assembler). */
875 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
877 this_addr
= tpst
->textlow
;
879 /* Check whether it is closer than our current
880 BEST_ADDR. Since this symbol address is
881 necessarily lower or equal to PC, the symbol closer
882 to PC is the symbol which address is the highest.
883 This way we return the psymtab which contains such
884 best match symbol. This can help in cases where the
885 symbol information/debuginfo is not complete, like
886 for instance on IRIX6 with gcc, where no debug info
887 is emitted for statics. (See also the nodebug.exp
889 if (this_addr
> best_addr
)
891 best_addr
= this_addr
;
902 /* Find which partial symtab contains PC. Return 0 if none.
903 Backward compatibility, no section */
905 struct partial_symtab
*
906 find_pc_psymtab (CORE_ADDR pc
)
908 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
911 /* Find which partial symbol within a psymtab matches PC and SECTION.
912 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
914 struct partial_symbol
*
915 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
918 struct partial_symbol
*best
= NULL
, *p
, **pp
;
922 psymtab
= find_pc_sect_psymtab (pc
, section
);
926 /* Cope with programs that start at address 0 */
927 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
929 /* Search the global symbols as well as the static symbols, so that
930 find_pc_partial_function doesn't use a minimal symbol and thus
931 cache a bad endaddr. */
932 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
933 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
934 < psymtab
->n_global_syms
);
938 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
939 && SYMBOL_CLASS (p
) == LOC_BLOCK
940 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
941 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
942 || (psymtab
->textlow
== 0
943 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
945 if (section
) /* match on a specific section */
947 fixup_psymbol_section (p
, psymtab
->objfile
);
948 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
951 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
956 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
957 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
958 < psymtab
->n_static_syms
);
962 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
963 && SYMBOL_CLASS (p
) == LOC_BLOCK
964 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
965 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
966 || (psymtab
->textlow
== 0
967 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
969 if (section
) /* match on a specific section */
971 fixup_psymbol_section (p
, psymtab
->objfile
);
972 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
975 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
983 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
984 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
986 struct partial_symbol
*
987 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
989 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
992 /* Debug symbols usually don't have section information. We need to dig that
993 out of the minimal symbols and stash that in the debug symbol. */
996 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
998 struct minimal_symbol
*msym
;
999 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
1003 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
1004 ginfo
->section
= SYMBOL_SECTION (msym
);
1008 /* Static, function-local variables do appear in the linker
1009 (minimal) symbols, but are frequently given names that won't
1010 be found via lookup_minimal_symbol(). E.g., it has been
1011 observed in frv-uclinux (ELF) executables that a static,
1012 function-local variable named "foo" might appear in the
1013 linker symbols as "foo.6" or "foo.3". Thus, there is no
1014 point in attempting to extend the lookup-by-name mechanism to
1015 handle this case due to the fact that there can be multiple
1018 So, instead, search the section table when lookup by name has
1019 failed. The ``addr'' and ``endaddr'' fields may have already
1020 been relocated. If so, the relocation offset (i.e. the
1021 ANOFFSET value) needs to be subtracted from these values when
1022 performing the comparison. We unconditionally subtract it,
1023 because, when no relocation has been performed, the ANOFFSET
1024 value will simply be zero.
1026 The address of the symbol whose section we're fixing up HAS
1027 NOT BEEN adjusted (relocated) yet. It can't have been since
1028 the section isn't yet known and knowing the section is
1029 necessary in order to add the correct relocation value. In
1030 other words, we wouldn't even be in this function (attempting
1031 to compute the section) if it were already known.
1033 Note that it is possible to search the minimal symbols
1034 (subtracting the relocation value if necessary) to find the
1035 matching minimal symbol, but this is overkill and much less
1036 efficient. It is not necessary to find the matching minimal
1037 symbol, only its section.
1039 Note that this technique (of doing a section table search)
1040 can fail when unrelocated section addresses overlap. For
1041 this reason, we still attempt a lookup by name prior to doing
1042 a search of the section table. */
1045 struct obj_section
*s
;
1047 addr
= ginfo
->value
.address
;
1049 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1051 int idx
= s
->the_bfd_section
->index
;
1052 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1054 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1056 ginfo
->bfd_section
= s
->the_bfd_section
;
1057 ginfo
->section
= idx
;
1065 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1070 if (SYMBOL_BFD_SECTION (sym
))
1073 fixup_section (&sym
->ginfo
, objfile
);
1078 struct partial_symbol
*
1079 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1084 if (SYMBOL_BFD_SECTION (psym
))
1087 fixup_section (&psym
->ginfo
, objfile
);
1092 /* Find the definition for a specified symbol name NAME
1093 in domain DOMAIN, visible from lexical block BLOCK.
1094 Returns the struct symbol pointer, or zero if no symbol is found.
1095 If SYMTAB is non-NULL, store the symbol table in which the
1096 symbol was found there, or NULL if not found.
1097 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1098 NAME is a field of the current implied argument `this'. If so set
1099 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1100 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1101 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1103 /* This function has a bunch of loops in it and it would seem to be
1104 attractive to put in some QUIT's (though I'm not really sure
1105 whether it can run long enough to be really important). But there
1106 are a few calls for which it would appear to be bad news to quit
1107 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1108 that there is C++ code below which can error(), but that probably
1109 doesn't affect these calls since they are looking for a known
1110 variable and thus can probably assume it will never hit the C++
1114 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1115 const domain_enum domain
, enum language lang
,
1116 int *is_a_field_of_this
,
1117 struct symtab
**symtab
)
1119 char *demangled_name
= NULL
;
1120 const char *modified_name
= NULL
;
1121 const char *mangled_name
= NULL
;
1122 int needtofreename
= 0;
1123 struct symbol
*returnval
;
1125 modified_name
= name
;
1127 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1128 we can always binary search. */
1129 if (lang
== language_cplus
)
1131 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1134 mangled_name
= name
;
1135 modified_name
= demangled_name
;
1139 else if (lang
== language_java
)
1141 demangled_name
= cplus_demangle (name
,
1142 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1145 mangled_name
= name
;
1146 modified_name
= demangled_name
;
1151 if (case_sensitivity
== case_sensitive_off
)
1156 len
= strlen (name
);
1157 copy
= (char *) alloca (len
+ 1);
1158 for (i
= 0; i
< len
; i
++)
1159 copy
[i
] = tolower (name
[i
]);
1161 modified_name
= copy
;
1164 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1166 is_a_field_of_this
, symtab
);
1168 xfree (demangled_name
);
1170 /* Override the returned symtab with the symbol's specific one. */
1171 if (returnval
!= NULL
&& symtab
!= NULL
)
1172 *symtab
= SYMBOL_SYMTAB (returnval
);
1177 /* Behave like lookup_symbol_in_language, but performed with the
1178 current language. */
1181 lookup_symbol (const char *name
, const struct block
*block
,
1182 domain_enum domain
, int *is_a_field_of_this
,
1183 struct symtab
**symtab
)
1185 return lookup_symbol_in_language (name
, block
, domain
,
1186 current_language
->la_language
,
1187 is_a_field_of_this
, symtab
);
1190 /* Behave like lookup_symbol except that NAME is the natural name
1191 of the symbol that we're looking for and, if LINKAGE_NAME is
1192 non-NULL, ensure that the symbol's linkage name matches as
1195 static struct symbol
*
1196 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1197 const struct block
*block
, const domain_enum domain
,
1198 enum language language
,
1199 int *is_a_field_of_this
, struct symtab
**symtab
)
1202 const struct language_defn
*langdef
;
1204 /* Make sure we do something sensible with is_a_field_of_this, since
1205 the callers that set this parameter to some non-null value will
1206 certainly use it later and expect it to be either 0 or 1.
1207 If we don't set it, the contents of is_a_field_of_this are
1209 if (is_a_field_of_this
!= NULL
)
1210 *is_a_field_of_this
= 0;
1212 /* Search specified block and its superiors. Don't search
1213 STATIC_BLOCK or GLOBAL_BLOCK. */
1215 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1220 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1221 check to see if NAME is a field of `this'. */
1223 langdef
= language_def (language
);
1225 if (langdef
->la_name_of_this
!= NULL
&& is_a_field_of_this
!= NULL
1228 struct symbol
*sym
= NULL
;
1229 /* 'this' is only defined in the function's block, so find the
1230 enclosing function block. */
1231 for (; block
&& !BLOCK_FUNCTION (block
);
1232 block
= BLOCK_SUPERBLOCK (block
));
1234 if (block
&& !dict_empty (BLOCK_DICT (block
)))
1235 sym
= lookup_block_symbol (block
, langdef
->la_name_of_this
,
1239 struct type
*t
= sym
->type
;
1241 /* I'm not really sure that type of this can ever
1242 be typedefed; just be safe. */
1244 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1245 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1246 t
= TYPE_TARGET_TYPE (t
);
1248 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1249 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1250 error (_("Internal error: `%s' is not an aggregate"),
1251 langdef
->la_name_of_this
);
1253 if (check_field (t
, name
))
1255 *is_a_field_of_this
= 1;
1263 /* Now do whatever is appropriate for LANGUAGE to look
1264 up static and global variables. */
1266 sym
= langdef
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1267 block
, domain
, symtab
);
1271 /* Now search all static file-level symbols. Not strictly correct,
1272 but more useful than an error. Do the symtabs first, then check
1273 the psymtabs. If a psymtab indicates the existence of the
1274 desired name as a file-level static, then do psymtab-to-symtab
1275 conversion on the fly and return the found symbol. */
1277 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1282 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1292 /* Check to see if the symbol is defined in BLOCK or its superiors.
1293 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1295 static struct symbol
*
1296 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1297 const struct block
*block
,
1298 const domain_enum domain
,
1299 struct symtab
**symtab
)
1302 const struct block
*static_block
= block_static_block (block
);
1304 /* Check if either no block is specified or it's a global block. */
1306 if (static_block
== NULL
)
1309 while (block
!= static_block
)
1311 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1315 block
= BLOCK_SUPERBLOCK (block
);
1318 /* We've reached the static block without finding a result. */
1323 /* Look up OBJFILE to BLOCK. */
1325 static struct objfile
*
1326 lookup_objfile_from_block (const struct block
*block
)
1328 struct objfile
*obj
;
1334 block
= block_global_block (block
);
1335 /* Go through SYMTABS. */
1336 ALL_SYMTABS (obj
, s
)
1337 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1343 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1344 symbol, and set block_found appropriately. */
1347 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1348 const struct block
*block
,
1349 const domain_enum domain
,
1350 struct symtab
**symtab
)
1353 struct objfile
*objfile
= NULL
;
1354 struct blockvector
*bv
;
1356 struct symtab
*s
= NULL
;
1358 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1361 block_found
= block
;
1364 /* Search the list of symtabs for one which contains the
1365 address of the start of this block. */
1366 ALL_PRIMARY_SYMTABS (objfile
, s
)
1368 bv
= BLOCKVECTOR (s
);
1369 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1370 if (BLOCK_START (b
) <= BLOCK_START (block
)
1371 && BLOCK_END (b
) > BLOCK_START (block
))
1378 return fixup_symbol_section (sym
, objfile
);
1384 /* Check all global symbols in OBJFILE in symtabs and
1388 lookup_global_symbol_from_objfile (const struct objfile
*objfile
,
1390 const char *linkage_name
,
1391 const domain_enum domain
,
1392 struct symtab
**symtab
)
1395 struct blockvector
*bv
;
1396 const struct block
*block
;
1398 struct partial_symtab
*ps
;
1400 /* Go through symtabs. */
1401 ALL_OBJFILE_SYMTABS (objfile
, s
)
1403 bv
= BLOCKVECTOR (s
);
1404 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1405 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1408 block_found
= block
;
1411 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1415 /* Now go through psymtabs. */
1416 ALL_OBJFILE_PSYMTABS (objfile
, ps
)
1419 && lookup_partial_symbol (ps
, name
, linkage_name
,
1422 s
= PSYMTAB_TO_SYMTAB (ps
);
1423 bv
= BLOCKVECTOR (s
);
1424 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1425 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1428 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1432 if (objfile
->separate_debug_objfile
)
1433 return lookup_global_symbol_from_objfile (objfile
->separate_debug_objfile
,
1434 name
, linkage_name
, domain
,
1440 /* Check to see if the symbol is defined in one of the symtabs.
1441 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1442 depending on whether or not we want to search global symbols or
1445 static struct symbol
*
1446 lookup_symbol_aux_symtabs (int block_index
,
1447 const char *name
, const char *linkage_name
,
1448 const domain_enum domain
,
1449 struct symtab
**symtab
)
1452 struct objfile
*objfile
;
1453 struct blockvector
*bv
;
1454 const struct block
*block
;
1457 ALL_PRIMARY_SYMTABS (objfile
, s
)
1459 bv
= BLOCKVECTOR (s
);
1460 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1461 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1464 block_found
= block
;
1467 return fixup_symbol_section (sym
, objfile
);
1474 /* Check to see if the symbol is defined in one of the partial
1475 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1476 STATIC_BLOCK, depending on whether or not we want to search global
1477 symbols or static symbols. */
1479 static struct symbol
*
1480 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1481 const char *linkage_name
,
1482 const domain_enum domain
,
1483 struct symtab
**symtab
)
1486 struct objfile
*objfile
;
1487 struct blockvector
*bv
;
1488 const struct block
*block
;
1489 struct partial_symtab
*ps
;
1491 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1493 ALL_PSYMTABS (objfile
, ps
)
1496 && lookup_partial_symbol (ps
, name
, linkage_name
,
1497 psymtab_index
, domain
))
1499 s
= PSYMTAB_TO_SYMTAB (ps
);
1500 bv
= BLOCKVECTOR (s
);
1501 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1502 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1505 /* This shouldn't be necessary, but as a last resort try
1506 looking in the statics even though the psymtab claimed
1507 the symbol was global, or vice-versa. It's possible
1508 that the psymtab gets it wrong in some cases. */
1510 /* FIXME: carlton/2002-09-30: Should we really do that?
1511 If that happens, isn't it likely to be a GDB error, in
1512 which case we should fix the GDB error rather than
1513 silently dealing with it here? So I'd vote for
1514 removing the check for the symbol in the other
1516 block
= BLOCKVECTOR_BLOCK (bv
,
1517 block_index
== GLOBAL_BLOCK
?
1518 STATIC_BLOCK
: GLOBAL_BLOCK
);
1519 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1521 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>)."),
1522 block_index
== GLOBAL_BLOCK
? "global" : "static",
1523 name
, ps
->filename
, name
, name
);
1527 return fixup_symbol_section (sym
, objfile
);
1534 /* A default version of lookup_symbol_nonlocal for use by languages
1535 that can't think of anything better to do. This implements the C
1539 basic_lookup_symbol_nonlocal (const char *name
,
1540 const char *linkage_name
,
1541 const struct block
*block
,
1542 const domain_enum domain
,
1543 struct symtab
**symtab
)
1547 /* NOTE: carlton/2003-05-19: The comments below were written when
1548 this (or what turned into this) was part of lookup_symbol_aux;
1549 I'm much less worried about these questions now, since these
1550 decisions have turned out well, but I leave these comments here
1553 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1554 not it would be appropriate to search the current global block
1555 here as well. (That's what this code used to do before the
1556 is_a_field_of_this check was moved up.) On the one hand, it's
1557 redundant with the lookup_symbol_aux_symtabs search that happens
1558 next. On the other hand, if decode_line_1 is passed an argument
1559 like filename:var, then the user presumably wants 'var' to be
1560 searched for in filename. On the third hand, there shouldn't be
1561 multiple global variables all of which are named 'var', and it's
1562 not like decode_line_1 has ever restricted its search to only
1563 global variables in a single filename. All in all, only
1564 searching the static block here seems best: it's correct and it's
1567 /* NOTE: carlton/2002-12-05: There's also a possible performance
1568 issue here: if you usually search for global symbols in the
1569 current file, then it would be slightly better to search the
1570 current global block before searching all the symtabs. But there
1571 are other factors that have a much greater effect on performance
1572 than that one, so I don't think we should worry about that for
1575 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1579 return lookup_symbol_global (name
, linkage_name
, block
, domain
, symtab
);
1582 /* Lookup a symbol in the static block associated to BLOCK, if there
1583 is one; do nothing if BLOCK is NULL or a global block. */
1586 lookup_symbol_static (const char *name
,
1587 const char *linkage_name
,
1588 const struct block
*block
,
1589 const domain_enum domain
,
1590 struct symtab
**symtab
)
1592 const struct block
*static_block
= block_static_block (block
);
1594 if (static_block
!= NULL
)
1595 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1601 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1605 lookup_symbol_global (const char *name
,
1606 const char *linkage_name
,
1607 const struct block
*block
,
1608 const domain_enum domain
,
1609 struct symtab
**symtab
)
1611 struct symbol
*sym
= NULL
;
1612 struct objfile
*objfile
= NULL
;
1614 /* Call library-specific lookup procedure. */
1615 objfile
= lookup_objfile_from_block (block
);
1616 if (objfile
!= NULL
)
1617 sym
= solib_global_lookup (objfile
, name
, linkage_name
, domain
, symtab
);
1621 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1626 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1630 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1631 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1632 linkage name matches it. Check the global symbols if GLOBAL, the
1633 static symbols if not */
1635 struct partial_symbol
*
1636 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1637 const char *linkage_name
, int global
,
1640 struct partial_symbol
*temp
;
1641 struct partial_symbol
**start
, **psym
;
1642 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1643 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1644 int do_linear_search
= 1;
1651 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1652 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1654 if (global
) /* This means we can use a binary search. */
1656 do_linear_search
= 0;
1658 /* Binary search. This search is guaranteed to end with center
1659 pointing at the earliest partial symbol whose name might be
1660 correct. At that point *all* partial symbols with an
1661 appropriate name will be checked against the correct
1665 top
= start
+ length
- 1;
1667 while (top
> bottom
)
1669 center
= bottom
+ (top
- bottom
) / 2;
1670 if (!(center
< top
))
1671 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1672 if (!do_linear_search
1673 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1675 do_linear_search
= 1;
1677 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1683 bottom
= center
+ 1;
1686 if (!(top
== bottom
))
1687 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1689 while (top
<= real_top
1690 && (linkage_name
!= NULL
1691 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1692 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1694 if (SYMBOL_DOMAIN (*top
) == domain
)
1702 /* Can't use a binary search or else we found during the binary search that
1703 we should also do a linear search. */
1705 if (do_linear_search
)
1707 for (psym
= start
; psym
< start
+ length
; psym
++)
1709 if (domain
== SYMBOL_DOMAIN (*psym
))
1711 if (linkage_name
!= NULL
1712 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1713 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1724 /* Look up a type named NAME in the struct_domain. The type returned
1725 must not be opaque -- i.e., must have at least one field
1729 lookup_transparent_type (const char *name
)
1731 return current_language
->la_lookup_transparent_type (name
);
1734 /* The standard implementation of lookup_transparent_type. This code
1735 was modeled on lookup_symbol -- the parts not relevant to looking
1736 up types were just left out. In particular it's assumed here that
1737 types are available in struct_domain and only at file-static or
1741 basic_lookup_transparent_type (const char *name
)
1744 struct symtab
*s
= NULL
;
1745 struct partial_symtab
*ps
;
1746 struct blockvector
*bv
;
1747 struct objfile
*objfile
;
1748 struct block
*block
;
1750 /* Now search all the global symbols. Do the symtab's first, then
1751 check the psymtab's. If a psymtab indicates the existence
1752 of the desired name as a global, then do psymtab-to-symtab
1753 conversion on the fly and return the found symbol. */
1755 ALL_PRIMARY_SYMTABS (objfile
, s
)
1757 bv
= BLOCKVECTOR (s
);
1758 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1759 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1760 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1762 return SYMBOL_TYPE (sym
);
1766 ALL_PSYMTABS (objfile
, ps
)
1768 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1771 s
= PSYMTAB_TO_SYMTAB (ps
);
1772 bv
= BLOCKVECTOR (s
);
1773 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1774 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1777 /* This shouldn't be necessary, but as a last resort
1778 * try looking in the statics even though the psymtab
1779 * claimed the symbol was global. It's possible that
1780 * the psymtab gets it wrong in some cases.
1782 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1783 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1785 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1786 %s may be an inlined function, or may be a template function\n\
1787 (if a template, try specifying an instantiation: %s<type>)."),
1788 name
, ps
->filename
, name
, name
);
1790 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1791 return SYMBOL_TYPE (sym
);
1795 /* Now search the static file-level symbols.
1796 Not strictly correct, but more useful than an error.
1797 Do the symtab's first, then
1798 check the psymtab's. If a psymtab indicates the existence
1799 of the desired name as a file-level static, then do psymtab-to-symtab
1800 conversion on the fly and return the found symbol.
1803 ALL_PRIMARY_SYMTABS (objfile
, s
)
1805 bv
= BLOCKVECTOR (s
);
1806 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1807 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1808 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1810 return SYMBOL_TYPE (sym
);
1814 ALL_PSYMTABS (objfile
, ps
)
1816 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1818 s
= PSYMTAB_TO_SYMTAB (ps
);
1819 bv
= BLOCKVECTOR (s
);
1820 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1821 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1824 /* This shouldn't be necessary, but as a last resort
1825 * try looking in the globals even though the psymtab
1826 * claimed the symbol was static. It's possible that
1827 * the psymtab gets it wrong in some cases.
1829 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1830 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1832 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1833 %s may be an inlined function, or may be a template function\n\
1834 (if a template, try specifying an instantiation: %s<type>)."),
1835 name
, ps
->filename
, name
, name
);
1837 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1838 return SYMBOL_TYPE (sym
);
1841 return (struct type
*) 0;
1845 /* Find the psymtab containing main(). */
1846 /* FIXME: What about languages without main() or specially linked
1847 executables that have no main() ? */
1849 struct partial_symtab
*
1850 find_main_psymtab (void)
1852 struct partial_symtab
*pst
;
1853 struct objfile
*objfile
;
1855 ALL_PSYMTABS (objfile
, pst
)
1857 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1865 /* Search BLOCK for symbol NAME in DOMAIN.
1867 Note that if NAME is the demangled form of a C++ symbol, we will fail
1868 to find a match during the binary search of the non-encoded names, but
1869 for now we don't worry about the slight inefficiency of looking for
1870 a match we'll never find, since it will go pretty quick. Once the
1871 binary search terminates, we drop through and do a straight linear
1872 search on the symbols. Each symbol which is marked as being a ObjC/C++
1873 symbol (language_cplus or language_objc set) has both the encoded and
1874 non-encoded names tested for a match.
1876 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1877 particular mangled name.
1881 lookup_block_symbol (const struct block
*block
, const char *name
,
1882 const char *linkage_name
,
1883 const domain_enum domain
)
1885 struct dict_iterator iter
;
1888 if (!BLOCK_FUNCTION (block
))
1890 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1892 sym
= dict_iter_name_next (name
, &iter
))
1894 if (SYMBOL_DOMAIN (sym
) == domain
1895 && (linkage_name
!= NULL
1896 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1903 /* Note that parameter symbols do not always show up last in the
1904 list; this loop makes sure to take anything else other than
1905 parameter symbols first; it only uses parameter symbols as a
1906 last resort. Note that this only takes up extra computation
1909 struct symbol
*sym_found
= NULL
;
1911 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1913 sym
= dict_iter_name_next (name
, &iter
))
1915 if (SYMBOL_DOMAIN (sym
) == domain
1916 && (linkage_name
!= NULL
1917 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1920 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1921 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1922 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1923 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1924 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1925 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1926 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1932 return (sym_found
); /* Will be NULL if not found. */
1936 /* Find the symtab associated with PC and SECTION. Look through the
1937 psymtabs and read in another symtab if necessary. */
1940 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1943 struct blockvector
*bv
;
1944 struct symtab
*s
= NULL
;
1945 struct symtab
*best_s
= NULL
;
1946 struct partial_symtab
*ps
;
1947 struct objfile
*objfile
;
1948 CORE_ADDR distance
= 0;
1949 struct minimal_symbol
*msymbol
;
1951 /* If we know that this is not a text address, return failure. This is
1952 necessary because we loop based on the block's high and low code
1953 addresses, which do not include the data ranges, and because
1954 we call find_pc_sect_psymtab which has a similar restriction based
1955 on the partial_symtab's texthigh and textlow. */
1956 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1958 && (msymbol
->type
== mst_data
1959 || msymbol
->type
== mst_bss
1960 || msymbol
->type
== mst_abs
1961 || msymbol
->type
== mst_file_data
1962 || msymbol
->type
== mst_file_bss
))
1965 /* Search all symtabs for the one whose file contains our address, and which
1966 is the smallest of all the ones containing the address. This is designed
1967 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1968 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1969 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1971 This happens for native ecoff format, where code from included files
1972 gets its own symtab. The symtab for the included file should have
1973 been read in already via the dependency mechanism.
1974 It might be swifter to create several symtabs with the same name
1975 like xcoff does (I'm not sure).
1977 It also happens for objfiles that have their functions reordered.
1978 For these, the symtab we are looking for is not necessarily read in. */
1980 ALL_PRIMARY_SYMTABS (objfile
, s
)
1982 bv
= BLOCKVECTOR (s
);
1983 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1985 if (BLOCK_START (b
) <= pc
1986 && BLOCK_END (b
) > pc
1988 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1990 /* For an objfile that has its functions reordered,
1991 find_pc_psymtab will find the proper partial symbol table
1992 and we simply return its corresponding symtab. */
1993 /* In order to better support objfiles that contain both
1994 stabs and coff debugging info, we continue on if a psymtab
1996 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1998 ps
= find_pc_sect_psymtab (pc
, section
);
2000 return PSYMTAB_TO_SYMTAB (ps
);
2004 struct dict_iterator iter
;
2005 struct symbol
*sym
= NULL
;
2007 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2009 fixup_symbol_section (sym
, objfile
);
2010 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
2014 continue; /* no symbol in this symtab matches section */
2016 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2025 ps
= find_pc_sect_psymtab (pc
, section
);
2029 /* Might want to error() here (in case symtab is corrupt and
2030 will cause a core dump), but maybe we can successfully
2031 continue, so let's not. */
2033 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
2035 s
= PSYMTAB_TO_SYMTAB (ps
);
2040 /* Find the symtab associated with PC. Look through the psymtabs and
2041 read in another symtab if necessary. Backward compatibility, no section */
2044 find_pc_symtab (CORE_ADDR pc
)
2046 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2050 /* Find the source file and line number for a given PC value and SECTION.
2051 Return a structure containing a symtab pointer, a line number,
2052 and a pc range for the entire source line.
2053 The value's .pc field is NOT the specified pc.
2054 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2055 use the line that ends there. Otherwise, in that case, the line
2056 that begins there is used. */
2058 /* The big complication here is that a line may start in one file, and end just
2059 before the start of another file. This usually occurs when you #include
2060 code in the middle of a subroutine. To properly find the end of a line's PC
2061 range, we must search all symtabs associated with this compilation unit, and
2062 find the one whose first PC is closer than that of the next line in this
2065 /* If it's worth the effort, we could be using a binary search. */
2067 struct symtab_and_line
2068 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2071 struct linetable
*l
;
2074 struct linetable_entry
*item
;
2075 struct symtab_and_line val
;
2076 struct blockvector
*bv
;
2077 struct minimal_symbol
*msymbol
;
2078 struct minimal_symbol
*mfunsym
;
2080 /* Info on best line seen so far, and where it starts, and its file. */
2082 struct linetable_entry
*best
= NULL
;
2083 CORE_ADDR best_end
= 0;
2084 struct symtab
*best_symtab
= 0;
2086 /* Store here the first line number
2087 of a file which contains the line at the smallest pc after PC.
2088 If we don't find a line whose range contains PC,
2089 we will use a line one less than this,
2090 with a range from the start of that file to the first line's pc. */
2091 struct linetable_entry
*alt
= NULL
;
2092 struct symtab
*alt_symtab
= 0;
2094 /* Info on best line seen in this file. */
2096 struct linetable_entry
*prev
;
2098 /* If this pc is not from the current frame,
2099 it is the address of the end of a call instruction.
2100 Quite likely that is the start of the following statement.
2101 But what we want is the statement containing the instruction.
2102 Fudge the pc to make sure we get that. */
2104 init_sal (&val
); /* initialize to zeroes */
2106 /* It's tempting to assume that, if we can't find debugging info for
2107 any function enclosing PC, that we shouldn't search for line
2108 number info, either. However, GAS can emit line number info for
2109 assembly files --- very helpful when debugging hand-written
2110 assembly code. In such a case, we'd have no debug info for the
2111 function, but we would have line info. */
2116 /* elz: added this because this function returned the wrong
2117 information if the pc belongs to a stub (import/export)
2118 to call a shlib function. This stub would be anywhere between
2119 two functions in the target, and the line info was erroneously
2120 taken to be the one of the line before the pc.
2122 /* RT: Further explanation:
2124 * We have stubs (trampolines) inserted between procedures.
2126 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2127 * exists in the main image.
2129 * In the minimal symbol table, we have a bunch of symbols
2130 * sorted by start address. The stubs are marked as "trampoline",
2131 * the others appear as text. E.g.:
2133 * Minimal symbol table for main image
2134 * main: code for main (text symbol)
2135 * shr1: stub (trampoline symbol)
2136 * foo: code for foo (text symbol)
2138 * Minimal symbol table for "shr1" image:
2140 * shr1: code for shr1 (text symbol)
2143 * So the code below is trying to detect if we are in the stub
2144 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2145 * and if found, do the symbolization from the real-code address
2146 * rather than the stub address.
2148 * Assumptions being made about the minimal symbol table:
2149 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2150 * if we're really in the trampoline. If we're beyond it (say
2151 * we're in "foo" in the above example), it'll have a closer
2152 * symbol (the "foo" text symbol for example) and will not
2153 * return the trampoline.
2154 * 2. lookup_minimal_symbol_text() will find a real text symbol
2155 * corresponding to the trampoline, and whose address will
2156 * be different than the trampoline address. I put in a sanity
2157 * check for the address being the same, to avoid an
2158 * infinite recursion.
2160 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2161 if (msymbol
!= NULL
)
2162 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2164 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2166 if (mfunsym
== NULL
)
2167 /* I eliminated this warning since it is coming out
2168 * in the following situation:
2169 * gdb shmain // test program with shared libraries
2170 * (gdb) break shr1 // function in shared lib
2171 * Warning: In stub for ...
2172 * In the above situation, the shared lib is not loaded yet,
2173 * so of course we can't find the real func/line info,
2174 * but the "break" still works, and the warning is annoying.
2175 * So I commented out the warning. RT */
2176 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2178 else if (SYMBOL_VALUE_ADDRESS (mfunsym
) == SYMBOL_VALUE_ADDRESS (msymbol
))
2179 /* Avoid infinite recursion */
2180 /* See above comment about why warning is commented out */
2181 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2184 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2188 s
= find_pc_sect_symtab (pc
, section
);
2191 /* if no symbol information, return previous pc */
2198 bv
= BLOCKVECTOR (s
);
2200 /* Look at all the symtabs that share this blockvector.
2201 They all have the same apriori range, that we found was right;
2202 but they have different line tables. */
2204 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2206 /* Find the best line in this symtab. */
2213 /* I think len can be zero if the symtab lacks line numbers
2214 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2215 I'm not sure which, and maybe it depends on the symbol
2221 item
= l
->item
; /* Get first line info */
2223 /* Is this file's first line closer than the first lines of other files?
2224 If so, record this file, and its first line, as best alternate. */
2225 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2231 for (i
= 0; i
< len
; i
++, item
++)
2233 /* Leave prev pointing to the linetable entry for the last line
2234 that started at or before PC. */
2241 /* At this point, prev points at the line whose start addr is <= pc, and
2242 item points at the next line. If we ran off the end of the linetable
2243 (pc >= start of the last line), then prev == item. If pc < start of
2244 the first line, prev will not be set. */
2246 /* Is this file's best line closer than the best in the other files?
2247 If so, record this file, and its best line, as best so far. Don't
2248 save prev if it represents the end of a function (i.e. line number
2249 0) instead of a real line. */
2251 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2256 /* Discard BEST_END if it's before the PC of the current BEST. */
2257 if (best_end
<= best
->pc
)
2261 /* If another line (denoted by ITEM) is in the linetable and its
2262 PC is after BEST's PC, but before the current BEST_END, then
2263 use ITEM's PC as the new best_end. */
2264 if (best
&& i
< len
&& item
->pc
> best
->pc
2265 && (best_end
== 0 || best_end
> item
->pc
))
2266 best_end
= item
->pc
;
2271 /* If we didn't find any line number info, just return zeros.
2272 We used to return alt->line - 1 here, but that could be
2273 anywhere; if we don't have line number info for this PC,
2274 don't make some up. */
2277 else if (best
->line
== 0)
2279 /* If our best fit is in a range of PC's for which no line
2280 number info is available (line number is zero) then we didn't
2281 find any valid line information. */
2286 val
.symtab
= best_symtab
;
2287 val
.line
= best
->line
;
2289 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2294 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2296 val
.section
= section
;
2300 /* Backward compatibility (no section) */
2302 struct symtab_and_line
2303 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2307 section
= find_pc_overlay (pc
);
2308 if (pc_in_unmapped_range (pc
, section
))
2309 pc
= overlay_mapped_address (pc
, section
);
2310 return find_pc_sect_line (pc
, section
, notcurrent
);
2313 /* Find line number LINE in any symtab whose name is the same as
2316 If found, return the symtab that contains the linetable in which it was
2317 found, set *INDEX to the index in the linetable of the best entry
2318 found, and set *EXACT_MATCH nonzero if the value returned is an
2321 If not found, return NULL. */
2324 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2328 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2332 struct linetable
*best_linetable
;
2333 struct symtab
*best_symtab
;
2335 /* First try looking it up in the given symtab. */
2336 best_linetable
= LINETABLE (symtab
);
2337 best_symtab
= symtab
;
2338 best_index
= find_line_common (best_linetable
, line
, &exact
);
2339 if (best_index
< 0 || !exact
)
2341 /* Didn't find an exact match. So we better keep looking for
2342 another symtab with the same name. In the case of xcoff,
2343 multiple csects for one source file (produced by IBM's FORTRAN
2344 compiler) produce multiple symtabs (this is unavoidable
2345 assuming csects can be at arbitrary places in memory and that
2346 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2348 /* BEST is the smallest linenumber > LINE so far seen,
2349 or 0 if none has been seen so far.
2350 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2353 struct objfile
*objfile
;
2355 struct partial_symtab
*p
;
2357 if (best_index
>= 0)
2358 best
= best_linetable
->item
[best_index
].line
;
2362 ALL_PSYMTABS (objfile
, p
)
2364 if (strcmp (symtab
->filename
, p
->filename
) != 0)
2366 PSYMTAB_TO_SYMTAB (p
);
2369 ALL_SYMTABS (objfile
, s
)
2371 struct linetable
*l
;
2374 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2377 ind
= find_line_common (l
, line
, &exact
);
2387 if (best
== 0 || l
->item
[ind
].line
< best
)
2389 best
= l
->item
[ind
].line
;
2402 *index
= best_index
;
2404 *exact_match
= exact
;
2409 /* Set the PC value for a given source file and line number and return true.
2410 Returns zero for invalid line number (and sets the PC to 0).
2411 The source file is specified with a struct symtab. */
2414 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2416 struct linetable
*l
;
2423 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2426 l
= LINETABLE (symtab
);
2427 *pc
= l
->item
[ind
].pc
;
2434 /* Find the range of pc values in a line.
2435 Store the starting pc of the line into *STARTPTR
2436 and the ending pc (start of next line) into *ENDPTR.
2437 Returns 1 to indicate success.
2438 Returns 0 if could not find the specified line. */
2441 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2444 CORE_ADDR startaddr
;
2445 struct symtab_and_line found_sal
;
2448 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2451 /* This whole function is based on address. For example, if line 10 has
2452 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2453 "info line *0x123" should say the line goes from 0x100 to 0x200
2454 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2455 This also insures that we never give a range like "starts at 0x134
2456 and ends at 0x12c". */
2458 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2459 if (found_sal
.line
!= sal
.line
)
2461 /* The specified line (sal) has zero bytes. */
2462 *startptr
= found_sal
.pc
;
2463 *endptr
= found_sal
.pc
;
2467 *startptr
= found_sal
.pc
;
2468 *endptr
= found_sal
.end
;
2473 /* Given a line table and a line number, return the index into the line
2474 table for the pc of the nearest line whose number is >= the specified one.
2475 Return -1 if none is found. The value is >= 0 if it is an index.
2477 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2480 find_line_common (struct linetable
*l
, int lineno
,
2486 /* BEST is the smallest linenumber > LINENO so far seen,
2487 or 0 if none has been seen so far.
2488 BEST_INDEX identifies the item for it. */
2490 int best_index
= -1;
2501 for (i
= 0; i
< len
; i
++)
2503 struct linetable_entry
*item
= &(l
->item
[i
]);
2505 if (item
->line
== lineno
)
2507 /* Return the first (lowest address) entry which matches. */
2512 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2519 /* If we got here, we didn't get an exact match. */
2524 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2526 struct symtab_and_line sal
;
2527 sal
= find_pc_line (pc
, 0);
2530 return sal
.symtab
!= 0;
2533 /* Given a function symbol SYM, find the symtab and line for the start
2535 If the argument FUNFIRSTLINE is nonzero, we want the first line
2536 of real code inside the function. */
2538 struct symtab_and_line
2539 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2542 struct symtab_and_line sal
;
2544 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2545 fixup_symbol_section (sym
, NULL
);
2547 { /* skip "first line" of function (which is actually its prologue) */
2548 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2549 /* If function is in an unmapped overlay, use its unmapped LMA
2550 address, so that gdbarch_skip_prologue has something unique to work
2552 if (section_is_overlay (section
) &&
2553 !section_is_mapped (section
))
2554 pc
= overlay_unmapped_address (pc
, section
);
2556 pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
2557 pc
= gdbarch_skip_prologue (current_gdbarch
, pc
);
2559 /* For overlays, map pc back into its mapped VMA range */
2560 pc
= overlay_mapped_address (pc
, section
);
2562 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2564 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2565 line is still part of the same function. */
2567 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2568 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2570 /* First pc of next line */
2572 /* Recalculate the line number (might not be N+1). */
2573 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2580 /* If P is of the form "operator[ \t]+..." where `...' is
2581 some legitimate operator text, return a pointer to the
2582 beginning of the substring of the operator text.
2583 Otherwise, return "". */
2585 operator_chars (char *p
, char **end
)
2588 if (strncmp (p
, "operator", 8))
2592 /* Don't get faked out by `operator' being part of a longer
2594 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2597 /* Allow some whitespace between `operator' and the operator symbol. */
2598 while (*p
== ' ' || *p
== '\t')
2601 /* Recognize 'operator TYPENAME'. */
2603 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2606 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2615 case '\\': /* regexp quoting */
2618 if (p
[2] == '=') /* 'operator\*=' */
2620 else /* 'operator\*' */
2624 else if (p
[1] == '[')
2627 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2628 else if (p
[2] == '\\' && p
[3] == ']')
2630 *end
= p
+ 4; /* 'operator\[\]' */
2634 error (_("nothing is allowed between '[' and ']'"));
2638 /* Gratuitous qoute: skip it and move on. */
2660 if (p
[0] == '-' && p
[1] == '>')
2662 /* Struct pointer member operator 'operator->'. */
2665 *end
= p
+ 3; /* 'operator->*' */
2668 else if (p
[2] == '\\')
2670 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2675 *end
= p
+ 2; /* 'operator->' */
2679 if (p
[1] == '=' || p
[1] == p
[0])
2690 error (_("`operator ()' must be specified without whitespace in `()'"));
2695 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2700 error (_("`operator []' must be specified without whitespace in `[]'"));
2704 error (_("`operator %s' not supported"), p
);
2713 /* If FILE is not already in the table of files, return zero;
2714 otherwise return non-zero. Optionally add FILE to the table if ADD
2715 is non-zero. If *FIRST is non-zero, forget the old table
2718 filename_seen (const char *file
, int add
, int *first
)
2720 /* Table of files seen so far. */
2721 static const char **tab
= NULL
;
2722 /* Allocated size of tab in elements.
2723 Start with one 256-byte block (when using GNU malloc.c).
2724 24 is the malloc overhead when range checking is in effect. */
2725 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2726 /* Current size of tab in elements. */
2727 static int tab_cur_size
;
2733 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2737 /* Is FILE in tab? */
2738 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2739 if (strcmp (*p
, file
) == 0)
2742 /* No; maybe add it to tab. */
2745 if (tab_cur_size
== tab_alloc_size
)
2747 tab_alloc_size
*= 2;
2748 tab
= (const char **) xrealloc ((char *) tab
,
2749 tab_alloc_size
* sizeof (*tab
));
2751 tab
[tab_cur_size
++] = file
;
2757 /* Slave routine for sources_info. Force line breaks at ,'s.
2758 NAME is the name to print and *FIRST is nonzero if this is the first
2759 name printed. Set *FIRST to zero. */
2761 output_source_filename (const char *name
, int *first
)
2763 /* Since a single source file can result in several partial symbol
2764 tables, we need to avoid printing it more than once. Note: if
2765 some of the psymtabs are read in and some are not, it gets
2766 printed both under "Source files for which symbols have been
2767 read" and "Source files for which symbols will be read in on
2768 demand". I consider this a reasonable way to deal with the
2769 situation. I'm not sure whether this can also happen for
2770 symtabs; it doesn't hurt to check. */
2772 /* Was NAME already seen? */
2773 if (filename_seen (name
, 1, first
))
2775 /* Yes; don't print it again. */
2778 /* No; print it and reset *FIRST. */
2785 printf_filtered (", ");
2789 fputs_filtered (name
, gdb_stdout
);
2793 sources_info (char *ignore
, int from_tty
)
2796 struct partial_symtab
*ps
;
2797 struct objfile
*objfile
;
2800 if (!have_full_symbols () && !have_partial_symbols ())
2802 error (_("No symbol table is loaded. Use the \"file\" command."));
2805 printf_filtered ("Source files for which symbols have been read in:\n\n");
2808 ALL_SYMTABS (objfile
, s
)
2810 const char *fullname
= symtab_to_fullname (s
);
2811 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2813 printf_filtered ("\n\n");
2815 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2818 ALL_PSYMTABS (objfile
, ps
)
2822 const char *fullname
= psymtab_to_fullname (ps
);
2823 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2826 printf_filtered ("\n");
2830 file_matches (char *file
, char *files
[], int nfiles
)
2834 if (file
!= NULL
&& nfiles
!= 0)
2836 for (i
= 0; i
< nfiles
; i
++)
2838 if (strcmp (files
[i
], lbasename (file
)) == 0)
2842 else if (nfiles
== 0)
2847 /* Free any memory associated with a search. */
2849 free_search_symbols (struct symbol_search
*symbols
)
2851 struct symbol_search
*p
;
2852 struct symbol_search
*next
;
2854 for (p
= symbols
; p
!= NULL
; p
= next
)
2862 do_free_search_symbols_cleanup (void *symbols
)
2864 free_search_symbols (symbols
);
2868 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2870 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2873 /* Helper function for sort_search_symbols and qsort. Can only
2874 sort symbols, not minimal symbols. */
2876 compare_search_syms (const void *sa
, const void *sb
)
2878 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2879 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2881 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2882 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2885 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2886 prevtail where it is, but update its next pointer to point to
2887 the first of the sorted symbols. */
2888 static struct symbol_search
*
2889 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2891 struct symbol_search
**symbols
, *symp
, *old_next
;
2894 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2896 symp
= prevtail
->next
;
2897 for (i
= 0; i
< nfound
; i
++)
2902 /* Generally NULL. */
2905 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2906 compare_search_syms
);
2909 for (i
= 0; i
< nfound
; i
++)
2911 symp
->next
= symbols
[i
];
2914 symp
->next
= old_next
;
2920 /* Search the symbol table for matches to the regular expression REGEXP,
2921 returning the results in *MATCHES.
2923 Only symbols of KIND are searched:
2924 FUNCTIONS_DOMAIN - search all functions
2925 TYPES_DOMAIN - search all type names
2926 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2927 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2928 and constants (enums)
2930 free_search_symbols should be called when *MATCHES is no longer needed.
2932 The results are sorted locally; each symtab's global and static blocks are
2933 separately alphabetized.
2936 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2937 struct symbol_search
**matches
)
2940 struct partial_symtab
*ps
;
2941 struct blockvector
*bv
;
2944 struct dict_iterator iter
;
2946 struct partial_symbol
**psym
;
2947 struct objfile
*objfile
;
2948 struct minimal_symbol
*msymbol
;
2951 static enum minimal_symbol_type types
[]
2953 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2954 static enum minimal_symbol_type types2
[]
2956 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2957 static enum minimal_symbol_type types3
[]
2959 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2960 static enum minimal_symbol_type types4
[]
2962 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2963 enum minimal_symbol_type ourtype
;
2964 enum minimal_symbol_type ourtype2
;
2965 enum minimal_symbol_type ourtype3
;
2966 enum minimal_symbol_type ourtype4
;
2967 struct symbol_search
*sr
;
2968 struct symbol_search
*psr
;
2969 struct symbol_search
*tail
;
2970 struct cleanup
*old_chain
= NULL
;
2972 if (kind
< VARIABLES_DOMAIN
)
2973 error (_("must search on specific domain"));
2975 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2976 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2977 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2978 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2980 sr
= *matches
= NULL
;
2985 /* Make sure spacing is right for C++ operators.
2986 This is just a courtesy to make the matching less sensitive
2987 to how many spaces the user leaves between 'operator'
2988 and <TYPENAME> or <OPERATOR>. */
2990 char *opname
= operator_chars (regexp
, &opend
);
2993 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2994 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2996 /* There should 1 space between 'operator' and 'TYPENAME'. */
2997 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3002 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3003 if (opname
[-1] == ' ')
3006 /* If wrong number of spaces, fix it. */
3009 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3010 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3015 if (0 != (val
= re_comp (regexp
)))
3016 error (_("Invalid regexp (%s): %s"), val
, regexp
);
3019 /* Search through the partial symtabs *first* for all symbols
3020 matching the regexp. That way we don't have to reproduce all of
3021 the machinery below. */
3023 ALL_PSYMTABS (objfile
, ps
)
3025 struct partial_symbol
**bound
, **gbound
, **sbound
;
3031 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3032 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3035 /* Go through all of the symbols stored in a partial
3036 symtab in one loop. */
3037 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3042 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3044 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3055 /* If it would match (logic taken from loop below)
3056 load the file and go on to the next one. We check the
3057 filename here, but that's a bit bogus: we don't know
3058 what file it really comes from until we have full
3059 symtabs. The symbol might be in a header file included by
3060 this psymtab. This only affects Insight. */
3061 if (file_matches (ps
->filename
, files
, nfiles
)
3063 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3064 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3065 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3066 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3067 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3068 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3070 PSYMTAB_TO_SYMTAB (ps
);
3078 /* Here, we search through the minimal symbol tables for functions
3079 and variables that match, and force their symbols to be read.
3080 This is in particular necessary for demangled variable names,
3081 which are no longer put into the partial symbol tables.
3082 The symbol will then be found during the scan of symtabs below.
3084 For functions, find_pc_symtab should succeed if we have debug info
3085 for the function, for variables we have to call lookup_symbol
3086 to determine if the variable has debug info.
3087 If the lookup fails, set found_misc so that we will rescan to print
3088 any matching symbols without debug info.
3091 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3093 ALL_MSYMBOLS (objfile
, msymbol
)
3095 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3096 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3097 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3098 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3101 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3103 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3105 /* FIXME: carlton/2003-02-04: Given that the
3106 semantics of lookup_symbol keeps on changing
3107 slightly, it would be a nice idea if we had a
3108 function lookup_symbol_minsym that found the
3109 symbol associated to a given minimal symbol (if
3111 if (kind
== FUNCTIONS_DOMAIN
3112 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3113 (struct block
*) NULL
,
3115 0, (struct symtab
**) NULL
)
3124 ALL_PRIMARY_SYMTABS (objfile
, s
)
3126 bv
= BLOCKVECTOR (s
);
3127 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3129 struct symbol_search
*prevtail
= tail
;
3131 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3132 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3134 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3137 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3139 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3140 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3141 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3142 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3143 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3144 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3145 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3148 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3150 psr
->symtab
= real_symtab
;
3152 psr
->msymbol
= NULL
;
3164 if (prevtail
== NULL
)
3166 struct symbol_search dummy
;
3169 tail
= sort_search_symbols (&dummy
, nfound
);
3172 old_chain
= make_cleanup_free_search_symbols (sr
);
3175 tail
= sort_search_symbols (prevtail
, nfound
);
3180 /* If there are no eyes, avoid all contact. I mean, if there are
3181 no debug symbols, then print directly from the msymbol_vector. */
3183 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3185 ALL_MSYMBOLS (objfile
, msymbol
)
3187 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3188 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3189 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3190 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3193 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3195 /* Functions: Look up by address. */
3196 if (kind
!= FUNCTIONS_DOMAIN
||
3197 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3199 /* Variables/Absolutes: Look up by name */
3200 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3201 (struct block
*) NULL
, VAR_DOMAIN
,
3202 0, (struct symtab
**) NULL
) == NULL
)
3205 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3207 psr
->msymbol
= msymbol
;
3214 old_chain
= make_cleanup_free_search_symbols (sr
);
3228 discard_cleanups (old_chain
);
3231 /* Helper function for symtab_symbol_info, this function uses
3232 the data returned from search_symbols() to print information
3233 regarding the match to gdb_stdout.
3236 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3237 int block
, char *last
)
3239 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3241 fputs_filtered ("\nFile ", gdb_stdout
);
3242 fputs_filtered (s
->filename
, gdb_stdout
);
3243 fputs_filtered (":\n", gdb_stdout
);
3246 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3247 printf_filtered ("static ");
3249 /* Typedef that is not a C++ class */
3250 if (kind
== TYPES_DOMAIN
3251 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3252 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3253 /* variable, func, or typedef-that-is-c++-class */
3254 else if (kind
< TYPES_DOMAIN
||
3255 (kind
== TYPES_DOMAIN
&&
3256 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3258 type_print (SYMBOL_TYPE (sym
),
3259 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3260 ? "" : SYMBOL_PRINT_NAME (sym
)),
3263 printf_filtered (";\n");
3267 /* This help function for symtab_symbol_info() prints information
3268 for non-debugging symbols to gdb_stdout.
3271 print_msymbol_info (struct minimal_symbol
*msymbol
)
3275 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3276 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3277 & (CORE_ADDR
) 0xffffffff,
3280 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3282 printf_filtered ("%s %s\n",
3283 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3286 /* This is the guts of the commands "info functions", "info types", and
3287 "info variables". It calls search_symbols to find all matches and then
3288 print_[m]symbol_info to print out some useful information about the
3292 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3294 static char *classnames
[]
3296 {"variable", "function", "type", "method"};
3297 struct symbol_search
*symbols
;
3298 struct symbol_search
*p
;
3299 struct cleanup
*old_chain
;
3300 char *last_filename
= NULL
;
3303 /* must make sure that if we're interrupted, symbols gets freed */
3304 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3305 old_chain
= make_cleanup_free_search_symbols (symbols
);
3307 printf_filtered (regexp
3308 ? "All %ss matching regular expression \"%s\":\n"
3309 : "All defined %ss:\n",
3310 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3312 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3316 if (p
->msymbol
!= NULL
)
3320 printf_filtered ("\nNon-debugging symbols:\n");
3323 print_msymbol_info (p
->msymbol
);
3327 print_symbol_info (kind
,
3332 last_filename
= p
->symtab
->filename
;
3336 do_cleanups (old_chain
);
3340 variables_info (char *regexp
, int from_tty
)
3342 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3346 functions_info (char *regexp
, int from_tty
)
3348 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3353 types_info (char *regexp
, int from_tty
)
3355 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3358 /* Breakpoint all functions matching regular expression. */
3361 rbreak_command_wrapper (char *regexp
, int from_tty
)
3363 rbreak_command (regexp
, from_tty
);
3367 rbreak_command (char *regexp
, int from_tty
)
3369 struct symbol_search
*ss
;
3370 struct symbol_search
*p
;
3371 struct cleanup
*old_chain
;
3373 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3374 old_chain
= make_cleanup_free_search_symbols (ss
);
3376 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3378 if (p
->msymbol
== NULL
)
3380 char *string
= alloca (strlen (p
->symtab
->filename
)
3381 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3383 strcpy (string
, p
->symtab
->filename
);
3384 strcat (string
, ":'");
3385 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3386 strcat (string
, "'");
3387 break_command (string
, from_tty
);
3388 print_symbol_info (FUNCTIONS_DOMAIN
,
3392 p
->symtab
->filename
);
3396 char *string
= alloca (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
))
3398 strcpy (string
, "'");
3399 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3400 strcat (string
, "'");
3402 break_command (string
, from_tty
);
3403 printf_filtered ("<function, no debug info> %s;\n",
3404 SYMBOL_PRINT_NAME (p
->msymbol
));
3408 do_cleanups (old_chain
);
3412 /* Helper routine for make_symbol_completion_list. */
3414 static int return_val_size
;
3415 static int return_val_index
;
3416 static char **return_val
;
3418 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3419 completion_list_add_name \
3420 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3422 /* Test to see if the symbol specified by SYMNAME (which is already
3423 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3424 characters. If so, add it to the current completion list. */
3427 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3428 char *text
, char *word
)
3433 /* clip symbols that cannot match */
3435 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3440 /* We have a match for a completion, so add SYMNAME to the current list
3441 of matches. Note that the name is moved to freshly malloc'd space. */
3445 if (word
== sym_text
)
3447 new = xmalloc (strlen (symname
) + 5);
3448 strcpy (new, symname
);
3450 else if (word
> sym_text
)
3452 /* Return some portion of symname. */
3453 new = xmalloc (strlen (symname
) + 5);
3454 strcpy (new, symname
+ (word
- sym_text
));
3458 /* Return some of SYM_TEXT plus symname. */
3459 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3460 strncpy (new, word
, sym_text
- word
);
3461 new[sym_text
- word
] = '\0';
3462 strcat (new, symname
);
3465 if (return_val_index
+ 3 > return_val_size
)
3467 newsize
= (return_val_size
*= 2) * sizeof (char *);
3468 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3470 return_val
[return_val_index
++] = new;
3471 return_val
[return_val_index
] = NULL
;
3475 /* ObjC: In case we are completing on a selector, look as the msymbol
3476 again and feed all the selectors into the mill. */
3479 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3480 int sym_text_len
, char *text
, char *word
)
3482 static char *tmp
= NULL
;
3483 static unsigned int tmplen
= 0;
3485 char *method
, *category
, *selector
;
3488 method
= SYMBOL_NATURAL_NAME (msymbol
);
3490 /* Is it a method? */
3491 if ((method
[0] != '-') && (method
[0] != '+'))
3494 if (sym_text
[0] == '[')
3495 /* Complete on shortened method method. */
3496 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3498 while ((strlen (method
) + 1) >= tmplen
)
3504 tmp
= xrealloc (tmp
, tmplen
);
3506 selector
= strchr (method
, ' ');
3507 if (selector
!= NULL
)
3510 category
= strchr (method
, '(');
3512 if ((category
!= NULL
) && (selector
!= NULL
))
3514 memcpy (tmp
, method
, (category
- method
));
3515 tmp
[category
- method
] = ' ';
3516 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3517 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3518 if (sym_text
[0] == '[')
3519 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3522 if (selector
!= NULL
)
3524 /* Complete on selector only. */
3525 strcpy (tmp
, selector
);
3526 tmp2
= strchr (tmp
, ']');
3530 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3534 /* Break the non-quoted text based on the characters which are in
3535 symbols. FIXME: This should probably be language-specific. */
3538 language_search_unquoted_string (char *text
, char *p
)
3540 for (; p
> text
; --p
)
3542 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3546 if ((current_language
->la_language
== language_objc
))
3548 if (p
[-1] == ':') /* might be part of a method name */
3550 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3551 p
-= 2; /* beginning of a method name */
3552 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3553 { /* might be part of a method name */
3556 /* Seeing a ' ' or a '(' is not conclusive evidence
3557 that we are in the middle of a method name. However,
3558 finding "-[" or "+[" should be pretty un-ambiguous.
3559 Unfortunately we have to find it now to decide. */
3562 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3563 t
[-1] == ' ' || t
[-1] == ':' ||
3564 t
[-1] == '(' || t
[-1] == ')')
3569 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3570 p
= t
- 2; /* method name detected */
3571 /* else we leave with p unchanged */
3581 default_make_symbol_completion_list (char *text
, char *word
)
3583 /* Problem: All of the symbols have to be copied because readline
3584 frees them. I'm not going to worry about this; hopefully there
3585 won't be that many. */
3589 struct partial_symtab
*ps
;
3590 struct minimal_symbol
*msymbol
;
3591 struct objfile
*objfile
;
3592 struct block
*b
, *surrounding_static_block
= 0;
3593 struct dict_iterator iter
;
3595 struct partial_symbol
**psym
;
3596 /* The symbol we are completing on. Points in same buffer as text. */
3598 /* Length of sym_text. */
3601 /* Now look for the symbol we are supposed to complete on. */
3605 char *quote_pos
= NULL
;
3607 /* First see if this is a quoted string. */
3609 for (p
= text
; *p
!= '\0'; ++p
)
3611 if (quote_found
!= '\0')
3613 if (*p
== quote_found
)
3614 /* Found close quote. */
3616 else if (*p
== '\\' && p
[1] == quote_found
)
3617 /* A backslash followed by the quote character
3618 doesn't end the string. */
3621 else if (*p
== '\'' || *p
== '"')
3627 if (quote_found
== '\'')
3628 /* A string within single quotes can be a symbol, so complete on it. */
3629 sym_text
= quote_pos
+ 1;
3630 else if (quote_found
== '"')
3631 /* A double-quoted string is never a symbol, nor does it make sense
3632 to complete it any other way. */
3634 return_val
= (char **) xmalloc (sizeof (char *));
3635 return_val
[0] = NULL
;
3640 /* It is not a quoted string. Break it based on the characters
3641 which are in symbols. */
3644 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3653 sym_text_len
= strlen (sym_text
);
3655 return_val_size
= 100;
3656 return_val_index
= 0;
3657 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3658 return_val
[0] = NULL
;
3660 /* Look through the partial symtabs for all symbols which begin
3661 by matching SYM_TEXT. Add each one that you find to the list. */
3663 ALL_PSYMTABS (objfile
, ps
)
3665 /* If the psymtab's been read in we'll get it when we search
3666 through the blockvector. */
3670 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3671 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3672 + ps
->n_global_syms
);
3675 /* If interrupted, then quit. */
3677 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3680 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3681 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3682 + ps
->n_static_syms
);
3686 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3690 /* At this point scan through the misc symbol vectors and add each
3691 symbol you find to the list. Eventually we want to ignore
3692 anything that isn't a text symbol (everything else will be
3693 handled by the psymtab code above). */
3695 ALL_MSYMBOLS (objfile
, msymbol
)
3698 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3700 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3703 /* Search upwards from currently selected frame (so that we can
3704 complete on local vars. */
3706 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3708 if (!BLOCK_SUPERBLOCK (b
))
3710 surrounding_static_block
= b
; /* For elmin of dups */
3713 /* Also catch fields of types defined in this places which match our
3714 text string. Only complete on types visible from current context. */
3716 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3719 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3720 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3722 struct type
*t
= SYMBOL_TYPE (sym
);
3723 enum type_code c
= TYPE_CODE (t
);
3725 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3727 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3729 if (TYPE_FIELD_NAME (t
, j
))
3731 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3732 sym_text
, sym_text_len
, text
, word
);
3740 /* Go through the symtabs and check the externs and statics for
3741 symbols which match. */
3743 ALL_PRIMARY_SYMTABS (objfile
, s
)
3746 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3747 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3749 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3753 ALL_PRIMARY_SYMTABS (objfile
, s
)
3756 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3757 /* Don't do this block twice. */
3758 if (b
== surrounding_static_block
)
3760 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3762 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3766 return (return_val
);
3769 /* Return a NULL terminated array of all symbols (regardless of class)
3770 which begin by matching TEXT. If the answer is no symbols, then
3771 the return value is an array which contains only a NULL pointer. */
3774 make_symbol_completion_list (char *text
, char *word
)
3776 return current_language
->la_make_symbol_completion_list (text
, word
);
3779 /* Like make_symbol_completion_list, but returns a list of symbols
3780 defined in a source file FILE. */
3783 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3788 struct dict_iterator iter
;
3789 /* The symbol we are completing on. Points in same buffer as text. */
3791 /* Length of sym_text. */
3794 /* Now look for the symbol we are supposed to complete on.
3795 FIXME: This should be language-specific. */
3799 char *quote_pos
= NULL
;
3801 /* First see if this is a quoted string. */
3803 for (p
= text
; *p
!= '\0'; ++p
)
3805 if (quote_found
!= '\0')
3807 if (*p
== quote_found
)
3808 /* Found close quote. */
3810 else if (*p
== '\\' && p
[1] == quote_found
)
3811 /* A backslash followed by the quote character
3812 doesn't end the string. */
3815 else if (*p
== '\'' || *p
== '"')
3821 if (quote_found
== '\'')
3822 /* A string within single quotes can be a symbol, so complete on it. */
3823 sym_text
= quote_pos
+ 1;
3824 else if (quote_found
== '"')
3825 /* A double-quoted string is never a symbol, nor does it make sense
3826 to complete it any other way. */
3828 return_val
= (char **) xmalloc (sizeof (char *));
3829 return_val
[0] = NULL
;
3834 /* Not a quoted string. */
3835 sym_text
= language_search_unquoted_string (text
, p
);
3839 sym_text_len
= strlen (sym_text
);
3841 return_val_size
= 10;
3842 return_val_index
= 0;
3843 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3844 return_val
[0] = NULL
;
3846 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3848 s
= lookup_symtab (srcfile
);
3851 /* Maybe they typed the file with leading directories, while the
3852 symbol tables record only its basename. */
3853 const char *tail
= lbasename (srcfile
);
3856 s
= lookup_symtab (tail
);
3859 /* If we have no symtab for that file, return an empty list. */
3861 return (return_val
);
3863 /* Go through this symtab and check the externs and statics for
3864 symbols which match. */
3866 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3867 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3869 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3872 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3873 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3875 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3878 return (return_val
);
3881 /* A helper function for make_source_files_completion_list. It adds
3882 another file name to a list of possible completions, growing the
3883 list as necessary. */
3886 add_filename_to_list (const char *fname
, char *text
, char *word
,
3887 char ***list
, int *list_used
, int *list_alloced
)
3890 size_t fnlen
= strlen (fname
);
3892 if (*list_used
+ 1 >= *list_alloced
)
3895 *list
= (char **) xrealloc ((char *) *list
,
3896 *list_alloced
* sizeof (char *));
3901 /* Return exactly fname. */
3902 new = xmalloc (fnlen
+ 5);
3903 strcpy (new, fname
);
3905 else if (word
> text
)
3907 /* Return some portion of fname. */
3908 new = xmalloc (fnlen
+ 5);
3909 strcpy (new, fname
+ (word
- text
));
3913 /* Return some of TEXT plus fname. */
3914 new = xmalloc (fnlen
+ (text
- word
) + 5);
3915 strncpy (new, word
, text
- word
);
3916 new[text
- word
] = '\0';
3917 strcat (new, fname
);
3919 (*list
)[*list_used
] = new;
3920 (*list
)[++*list_used
] = NULL
;
3924 not_interesting_fname (const char *fname
)
3926 static const char *illegal_aliens
[] = {
3927 "_globals_", /* inserted by coff_symtab_read */
3932 for (i
= 0; illegal_aliens
[i
]; i
++)
3934 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3940 /* Return a NULL terminated array of all source files whose names
3941 begin with matching TEXT. The file names are looked up in the
3942 symbol tables of this program. If the answer is no matchess, then
3943 the return value is an array which contains only a NULL pointer. */
3946 make_source_files_completion_list (char *text
, char *word
)
3949 struct partial_symtab
*ps
;
3950 struct objfile
*objfile
;
3952 int list_alloced
= 1;
3954 size_t text_len
= strlen (text
);
3955 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3956 const char *base_name
;
3960 if (!have_full_symbols () && !have_partial_symbols ())
3963 ALL_SYMTABS (objfile
, s
)
3965 if (not_interesting_fname (s
->filename
))
3967 if (!filename_seen (s
->filename
, 1, &first
)
3968 #if HAVE_DOS_BASED_FILE_SYSTEM
3969 && strncasecmp (s
->filename
, text
, text_len
) == 0
3971 && strncmp (s
->filename
, text
, text_len
) == 0
3975 /* This file matches for a completion; add it to the current
3977 add_filename_to_list (s
->filename
, text
, word
,
3978 &list
, &list_used
, &list_alloced
);
3982 /* NOTE: We allow the user to type a base name when the
3983 debug info records leading directories, but not the other
3984 way around. This is what subroutines of breakpoint
3985 command do when they parse file names. */
3986 base_name
= lbasename (s
->filename
);
3987 if (base_name
!= s
->filename
3988 && !filename_seen (base_name
, 1, &first
)
3989 #if HAVE_DOS_BASED_FILE_SYSTEM
3990 && strncasecmp (base_name
, text
, text_len
) == 0
3992 && strncmp (base_name
, text
, text_len
) == 0
3995 add_filename_to_list (base_name
, text
, word
,
3996 &list
, &list_used
, &list_alloced
);
4000 ALL_PSYMTABS (objfile
, ps
)
4002 if (not_interesting_fname (ps
->filename
))
4006 if (!filename_seen (ps
->filename
, 1, &first
)
4007 #if HAVE_DOS_BASED_FILE_SYSTEM
4008 && strncasecmp (ps
->filename
, text
, text_len
) == 0
4010 && strncmp (ps
->filename
, text
, text_len
) == 0
4014 /* This file matches for a completion; add it to the
4015 current list of matches. */
4016 add_filename_to_list (ps
->filename
, text
, word
,
4017 &list
, &list_used
, &list_alloced
);
4022 base_name
= lbasename (ps
->filename
);
4023 if (base_name
!= ps
->filename
4024 && !filename_seen (base_name
, 1, &first
)
4025 #if HAVE_DOS_BASED_FILE_SYSTEM
4026 && strncasecmp (base_name
, text
, text_len
) == 0
4028 && strncmp (base_name
, text
, text_len
) == 0
4031 add_filename_to_list (base_name
, text
, word
,
4032 &list
, &list_used
, &list_alloced
);
4040 /* Determine if PC is in the prologue of a function. The prologue is the area
4041 between the first instruction of a function, and the first executable line.
4042 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4044 If non-zero, func_start is where we think the prologue starts, possibly
4045 by previous examination of symbol table information.
4049 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
4051 struct symtab_and_line sal
;
4052 CORE_ADDR func_addr
, func_end
;
4054 /* We have several sources of information we can consult to figure
4056 - Compilers usually emit line number info that marks the prologue
4057 as its own "source line". So the ending address of that "line"
4058 is the end of the prologue. If available, this is the most
4060 - The minimal symbols and partial symbols, which can usually tell
4061 us the starting and ending addresses of a function.
4062 - If we know the function's start address, we can call the
4063 architecture-defined gdbarch_skip_prologue function to analyze the
4064 instruction stream and guess where the prologue ends.
4065 - Our `func_start' argument; if non-zero, this is the caller's
4066 best guess as to the function's entry point. At the time of
4067 this writing, handle_inferior_event doesn't get this right, so
4068 it should be our last resort. */
4070 /* Consult the partial symbol table, to find which function
4072 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4074 CORE_ADDR prologue_end
;
4076 /* We don't even have minsym information, so fall back to using
4077 func_start, if given. */
4079 return 1; /* We *might* be in a prologue. */
4081 prologue_end
= gdbarch_skip_prologue (current_gdbarch
, func_start
);
4083 return func_start
<= pc
&& pc
< prologue_end
;
4086 /* If we have line number information for the function, that's
4087 usually pretty reliable. */
4088 sal
= find_pc_line (func_addr
, 0);
4090 /* Now sal describes the source line at the function's entry point,
4091 which (by convention) is the prologue. The end of that "line",
4092 sal.end, is the end of the prologue.
4094 Note that, for functions whose source code is all on a single
4095 line, the line number information doesn't always end up this way.
4096 So we must verify that our purported end-of-prologue address is
4097 *within* the function, not at its start or end. */
4099 || sal
.end
<= func_addr
4100 || func_end
<= sal
.end
)
4102 /* We don't have any good line number info, so use the minsym
4103 information, together with the architecture-specific prologue
4105 CORE_ADDR prologue_end
= gdbarch_skip_prologue
4106 (current_gdbarch
, func_addr
);
4108 return func_addr
<= pc
&& pc
< prologue_end
;
4111 /* We have line number info, and it looks good. */
4112 return func_addr
<= pc
&& pc
< sal
.end
;
4115 /* Given PC at the function's start address, attempt to find the
4116 prologue end using SAL information. Return zero if the skip fails.
4118 A non-optimized prologue traditionally has one SAL for the function
4119 and a second for the function body. A single line function has
4120 them both pointing at the same line.
4122 An optimized prologue is similar but the prologue may contain
4123 instructions (SALs) from the instruction body. Need to skip those
4124 while not getting into the function body.
4126 The functions end point and an increasing SAL line are used as
4127 indicators of the prologue's endpoint.
4129 This code is based on the function refine_prologue_limit (versions
4130 found in both ia64 and ppc). */
4133 skip_prologue_using_sal (CORE_ADDR func_addr
)
4135 struct symtab_and_line prologue_sal
;
4139 /* Get an initial range for the function. */
4140 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4141 start_pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
4143 prologue_sal
= find_pc_line (start_pc
, 0);
4144 if (prologue_sal
.line
!= 0)
4146 /* If there is only one sal that covers the entire function,
4147 then it is probably a single line function, like
4149 if (prologue_sal
.end
>= end_pc
)
4151 while (prologue_sal
.end
< end_pc
)
4153 struct symtab_and_line sal
;
4155 sal
= find_pc_line (prologue_sal
.end
, 0);
4158 /* Assume that a consecutive SAL for the same (or larger)
4159 line mark the prologue -> body transition. */
4160 if (sal
.line
>= prologue_sal
.line
)
4162 /* The case in which compiler's optimizer/scheduler has
4163 moved instructions into the prologue. We look ahead in
4164 the function looking for address ranges whose
4165 corresponding line number is less the first one that we
4166 found for the function. This is more conservative then
4167 refine_prologue_limit which scans a large number of SALs
4168 looking for any in the prologue */
4172 return prologue_sal
.end
;
4175 struct symtabs_and_lines
4176 decode_line_spec (char *string
, int funfirstline
)
4178 struct symtabs_and_lines sals
;
4179 struct symtab_and_line cursal
;
4182 error (_("Empty line specification."));
4184 /* We use whatever is set as the current source line. We do not try
4185 and get a default or it will recursively call us! */
4186 cursal
= get_current_source_symtab_and_line ();
4188 sals
= decode_line_1 (&string
, funfirstline
,
4189 cursal
.symtab
, cursal
.line
,
4190 (char ***) NULL
, NULL
);
4193 error (_("Junk at end of line specification: %s"), string
);
4198 static char *name_of_main
;
4201 set_main_name (const char *name
)
4203 if (name_of_main
!= NULL
)
4205 xfree (name_of_main
);
4206 name_of_main
= NULL
;
4210 name_of_main
= xstrdup (name
);
4214 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4218 find_main_name (void)
4220 const char *new_main_name
;
4222 /* Try to see if the main procedure is in Ada. */
4223 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4224 be to add a new method in the language vector, and call this
4225 method for each language until one of them returns a non-empty
4226 name. This would allow us to remove this hard-coded call to
4227 an Ada function. It is not clear that this is a better approach
4228 at this point, because all methods need to be written in a way
4229 such that false positives never be returned. For instance, it is
4230 important that a method does not return a wrong name for the main
4231 procedure if the main procedure is actually written in a different
4232 language. It is easy to guaranty this with Ada, since we use a
4233 special symbol generated only when the main in Ada to find the name
4234 of the main procedure. It is difficult however to see how this can
4235 be guarantied for languages such as C, for instance. This suggests
4236 that order of call for these methods becomes important, which means
4237 a more complicated approach. */
4238 new_main_name
= ada_main_name ();
4239 if (new_main_name
!= NULL
)
4241 set_main_name (new_main_name
);
4245 new_main_name
= pascal_main_name ();
4246 if (new_main_name
!= NULL
)
4248 set_main_name (new_main_name
);
4252 /* The languages above didn't identify the name of the main procedure.
4253 Fallback to "main". */
4254 set_main_name ("main");
4260 if (name_of_main
== NULL
)
4263 return name_of_main
;
4266 /* Handle ``executable_changed'' events for the symtab module. */
4269 symtab_observer_executable_changed (void *unused
)
4271 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4272 set_main_name (NULL
);
4275 /* Helper to expand_line_sal below. Appends new sal to SAL,
4276 initializing it from SYMTAB, LINENO and PC. */
4278 append_expanded_sal (struct symtabs_and_lines
*sal
,
4279 struct symtab
*symtab
,
4280 int lineno
, CORE_ADDR pc
)
4282 CORE_ADDR func_addr
, func_end
;
4284 sal
->sals
= xrealloc (sal
->sals
,
4285 sizeof (sal
->sals
[0])
4286 * (sal
->nelts
+ 1));
4287 init_sal (sal
->sals
+ sal
->nelts
);
4288 sal
->sals
[sal
->nelts
].symtab
= symtab
;
4289 sal
->sals
[sal
->nelts
].section
= NULL
;
4290 sal
->sals
[sal
->nelts
].end
= 0;
4291 sal
->sals
[sal
->nelts
].line
= lineno
;
4292 sal
->sals
[sal
->nelts
].pc
= pc
;
4296 /* Compute a set of all sals in
4297 the entire program that correspond to same file
4298 and line as SAL and return those. If there
4299 are several sals that belong to the same block,
4300 only one sal for the block is included in results. */
4302 struct symtabs_and_lines
4303 expand_line_sal (struct symtab_and_line sal
)
4305 struct symtabs_and_lines ret
, this_line
;
4307 struct objfile
*objfile
;
4308 struct partial_symtab
*psymtab
;
4309 struct symtab
*symtab
;
4312 struct block
**blocks
= NULL
;
4318 if (sal
.symtab
== NULL
|| sal
.line
== 0 || sal
.pc
!= 0)
4320 ret
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4327 struct linetable_entry
*best_item
= 0;
4328 struct symtab
*best_symtab
= 0;
4333 /* We meed to find all symtabs for a file which name
4334 is described by sal. We cannot just directly
4335 iterate over symtabs, since a symtab might not be
4336 yet created. We also cannot iterate over psymtabs,
4337 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4338 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4339 corresponding to an included file. Therefore, we do
4340 first pass over psymtabs, reading in those with
4341 the right name. Then, we iterate over symtabs, knowing
4342 that all symtabs we're interested in are loaded. */
4344 ALL_PSYMTABS (objfile
, psymtab
)
4346 if (strcmp (sal
.symtab
->filename
,
4347 psymtab
->filename
) == 0)
4348 PSYMTAB_TO_SYMTAB (psymtab
);
4352 /* For each symtab, we add all pcs to ret.sals. I'm actually
4353 not sure what to do if we have exact match in one symtab,
4354 and non-exact match on another symtab.
4356 ALL_SYMTABS (objfile
, symtab
)
4358 if (strcmp (sal
.symtab
->filename
,
4359 symtab
->filename
) == 0)
4361 struct linetable
*l
;
4363 l
= LINETABLE (symtab
);
4368 for (j
= 0; j
< len
; j
++)
4370 struct linetable_entry
*item
= &(l
->item
[j
]);
4372 if (item
->line
== lineno
)
4375 append_expanded_sal (&ret
, symtab
, lineno
, item
->pc
);
4377 else if (!exact
&& item
->line
> lineno
4378 && (best_item
== NULL
|| item
->line
< best_item
->line
))
4382 best_symtab
= symtab
;
4387 if (!exact
&& best_item
)
4388 append_expanded_sal (&ret
, best_symtab
, lineno
, best_item
->pc
);
4391 /* For optimized code, compiler can scatter one source line accross
4392 disjoint ranges of PC values, even when no duplicate functions
4393 or inline functions are involved. For example, 'for (;;)' inside
4394 non-template non-inline non-ctor-or-dtor function can result
4395 in two PC ranges. In this case, we don't want to set breakpoint
4396 on first PC of each range. To filter such cases, we use containing
4397 blocks -- for each PC found above we see if there are other PCs
4398 that are in the same block. If yes, the other PCs are filtered out. */
4400 filter
= xmalloc (ret
.nelts
* sizeof (int));
4401 blocks
= xmalloc (ret
.nelts
* sizeof (struct block
*));
4402 for (i
= 0; i
< ret
.nelts
; ++i
)
4405 blocks
[i
] = block_for_pc (ret
.sals
[i
].pc
);
4408 for (i
= 0; i
< ret
.nelts
; ++i
)
4409 if (blocks
[i
] != NULL
)
4410 for (j
= i
+1; j
< ret
.nelts
; ++j
)
4411 if (blocks
[j
] == blocks
[i
])
4419 struct symtab_and_line
*final
=
4420 xmalloc (sizeof (struct symtab_and_line
) * (ret
.nelts
-deleted
));
4422 for (i
= 0, j
= 0; i
< ret
.nelts
; ++i
)
4424 final
[j
++] = ret
.sals
[i
];
4426 ret
.nelts
-= deleted
;
4436 _initialize_symtab (void)
4438 add_info ("variables", variables_info
, _("\
4439 All global and static variable names, or those matching REGEXP."));
4441 add_com ("whereis", class_info
, variables_info
, _("\
4442 All global and static variable names, or those matching REGEXP."));
4444 add_info ("functions", functions_info
,
4445 _("All function names, or those matching REGEXP."));
4448 /* FIXME: This command has at least the following problems:
4449 1. It prints builtin types (in a very strange and confusing fashion).
4450 2. It doesn't print right, e.g. with
4451 typedef struct foo *FOO
4452 type_print prints "FOO" when we want to make it (in this situation)
4453 print "struct foo *".
4454 I also think "ptype" or "whatis" is more likely to be useful (but if
4455 there is much disagreement "info types" can be fixed). */
4456 add_info ("types", types_info
,
4457 _("All type names, or those matching REGEXP."));
4459 add_info ("sources", sources_info
,
4460 _("Source files in the program."));
4462 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4463 _("Set a breakpoint for all functions matching REGEXP."));
4467 add_com ("lf", class_info
, sources_info
,
4468 _("Source files in the program"));
4469 add_com ("lg", class_info
, variables_info
, _("\
4470 All global and static variable names, or those matching REGEXP."));
4473 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4474 multiple_symbols_modes
, &multiple_symbols_mode
,
4476 Set the debugger behavior when more than one symbol are possible matches\n\
4477 in an expression."), _("\
4478 Show how the debugger handles ambiguities in expressions."), _("\
4479 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4480 NULL
, NULL
, &setlist
, &showlist
);
4482 /* Initialize the one built-in type that isn't language dependent... */
4483 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4484 "<unknown type>", (struct objfile
*) NULL
);
4486 observer_attach_executable_changed (symtab_observer_executable_changed
);