1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2004, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "call-cmds.h"
31 #include "gdb_regex.h"
32 #include "expression.h"
38 #include "filenames.h" /* for FILENAME_CMP */
39 #include "objc-lang.h"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
58 #include "cp-support.h"
60 #include "gdb_assert.h"
63 #include "macroscope.h"
67 /* Prototypes for local functions */
69 static void rbreak_command (char *, int);
71 static void types_info (char *, int);
73 static void functions_info (char *, int);
75 static void variables_info (char *, int);
77 static void sources_info (char *, int);
79 static void output_source_filename (const char *, int *);
81 static int find_line_common (struct linetable
*, int, int *, int);
83 static struct symbol
*lookup_symbol_aux (const char *name
,
84 const struct block
*block
,
85 const domain_enum domain
,
86 enum language language
,
87 int *is_a_field_of_this
);
90 struct symbol
*lookup_symbol_aux_local (const char *name
,
91 const struct block
*block
,
92 const domain_enum domain
,
93 enum language language
);
96 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
98 const domain_enum domain
);
101 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
104 const domain_enum domain
);
106 static void print_msymbol_info (struct minimal_symbol
*);
108 void _initialize_symtab (void);
112 /* When non-zero, print debugging messages related to symtab creation. */
113 int symtab_create_debug
= 0;
115 /* Non-zero if a file may be known by two different basenames.
116 This is the uncommon case, and significantly slows down gdb.
117 Default set to "off" to not slow down the common case. */
118 int basenames_may_differ
= 0;
120 /* Allow the user to configure the debugger behavior with respect
121 to multiple-choice menus when more than one symbol matches during
124 const char multiple_symbols_ask
[] = "ask";
125 const char multiple_symbols_all
[] = "all";
126 const char multiple_symbols_cancel
[] = "cancel";
127 static const char *const multiple_symbols_modes
[] =
129 multiple_symbols_ask
,
130 multiple_symbols_all
,
131 multiple_symbols_cancel
,
134 static const char *multiple_symbols_mode
= multiple_symbols_all
;
136 /* Read-only accessor to AUTO_SELECT_MODE. */
139 multiple_symbols_select_mode (void)
141 return multiple_symbols_mode
;
144 /* Block in which the most recently searched-for symbol was found.
145 Might be better to make this a parameter to lookup_symbol and
148 const struct block
*block_found
;
150 /* See whether FILENAME matches SEARCH_NAME using the rule that we
151 advertise to the user. (The manual's description of linespecs
152 describes what we advertise). SEARCH_LEN is the length of
153 SEARCH_NAME. We assume that SEARCH_NAME is a relative path.
154 Returns true if they match, false otherwise. */
157 compare_filenames_for_search (const char *filename
, const char *search_name
,
160 int len
= strlen (filename
);
162 if (len
< search_len
)
165 /* The tail of FILENAME must match. */
166 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
169 /* Either the names must completely match, or the character
170 preceding the trailing SEARCH_NAME segment of FILENAME must be a
171 directory separator. */
172 return (len
== search_len
173 || IS_DIR_SEPARATOR (filename
[len
- search_len
- 1])
174 || (HAS_DRIVE_SPEC (filename
)
175 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
178 /* Check for a symtab of a specific name by searching some symtabs.
179 This is a helper function for callbacks of iterate_over_symtabs.
181 The return value, NAME, FULL_PATH, REAL_PATH, CALLBACK, and DATA
182 are identical to the `map_symtabs_matching_filename' method of
183 quick_symbol_functions.
185 FIRST and AFTER_LAST indicate the range of symtabs to search.
186 AFTER_LAST is one past the last symtab to search; NULL means to
187 search until the end of the list. */
190 iterate_over_some_symtabs (const char *name
,
191 const char *full_path
,
192 const char *real_path
,
193 int (*callback
) (struct symtab
*symtab
,
196 struct symtab
*first
,
197 struct symtab
*after_last
)
199 struct symtab
*s
= NULL
;
200 const char* base_name
= lbasename (name
);
201 int name_len
= strlen (name
);
202 int is_abs
= IS_ABSOLUTE_PATH (name
);
204 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
206 /* Exact match is always ok. */
207 if (FILENAME_CMP (name
, s
->filename
) == 0)
209 if (callback (s
, data
))
213 if (!is_abs
&& compare_filenames_for_search (s
->filename
, name
, name_len
))
215 if (callback (s
, data
))
219 /* Before we invoke realpath, which can get expensive when many
220 files are involved, do a quick comparison of the basenames. */
221 if (! basenames_may_differ
222 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
225 /* If the user gave us an absolute path, try to find the file in
226 this symtab and use its absolute path. */
228 if (full_path
!= NULL
)
230 const char *fp
= symtab_to_fullname (s
);
232 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
234 if (callback (s
, data
))
238 if (fp
!= NULL
&& !is_abs
&& compare_filenames_for_search (fp
, name
,
241 if (callback (s
, data
))
246 if (real_path
!= NULL
)
248 char *fullname
= symtab_to_fullname (s
);
250 if (fullname
!= NULL
)
252 char *rp
= gdb_realpath (fullname
);
254 make_cleanup (xfree
, rp
);
255 if (FILENAME_CMP (real_path
, rp
) == 0)
257 if (callback (s
, data
))
261 if (!is_abs
&& compare_filenames_for_search (rp
, name
, name_len
))
263 if (callback (s
, data
))
273 /* Check for a symtab of a specific name; first in symtabs, then in
274 psymtabs. *If* there is no '/' in the name, a match after a '/'
275 in the symtab filename will also work.
277 Calls CALLBACK with each symtab that is found and with the supplied
278 DATA. If CALLBACK returns true, the search stops. */
281 iterate_over_symtabs (const char *name
,
282 int (*callback
) (struct symtab
*symtab
,
286 struct symtab
*s
= NULL
;
287 struct objfile
*objfile
;
288 char *real_path
= NULL
;
289 char *full_path
= NULL
;
290 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
292 /* Here we are interested in canonicalizing an absolute path, not
293 absolutizing a relative path. */
294 if (IS_ABSOLUTE_PATH (name
))
296 full_path
= xfullpath (name
);
297 make_cleanup (xfree
, full_path
);
298 real_path
= gdb_realpath (name
);
299 make_cleanup (xfree
, real_path
);
302 ALL_OBJFILES (objfile
)
304 if (iterate_over_some_symtabs (name
, full_path
, real_path
, callback
, data
,
305 objfile
->symtabs
, NULL
))
307 do_cleanups (cleanups
);
312 /* Same search rules as above apply here, but now we look thru the
315 ALL_OBJFILES (objfile
)
318 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
325 do_cleanups (cleanups
);
330 do_cleanups (cleanups
);
333 /* The callback function used by lookup_symtab. */
336 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
338 struct symtab
**result_ptr
= data
;
340 *result_ptr
= symtab
;
344 /* A wrapper for iterate_over_symtabs that returns the first matching
348 lookup_symtab (const char *name
)
350 struct symtab
*result
= NULL
;
352 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
357 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
358 full method name, which consist of the class name (from T), the unadorned
359 method name from METHOD_ID, and the signature for the specific overload,
360 specified by SIGNATURE_ID. Note that this function is g++ specific. */
363 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
365 int mangled_name_len
;
367 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
368 struct fn_field
*method
= &f
[signature_id
];
369 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
370 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
371 const char *newname
= type_name_no_tag (type
);
373 /* Does the form of physname indicate that it is the full mangled name
374 of a constructor (not just the args)? */
375 int is_full_physname_constructor
;
378 int is_destructor
= is_destructor_name (physname
);
379 /* Need a new type prefix. */
380 char *const_prefix
= method
->is_const
? "C" : "";
381 char *volatile_prefix
= method
->is_volatile
? "V" : "";
383 int len
= (newname
== NULL
? 0 : strlen (newname
));
385 /* Nothing to do if physname already contains a fully mangled v3 abi name
386 or an operator name. */
387 if ((physname
[0] == '_' && physname
[1] == 'Z')
388 || is_operator_name (field_name
))
389 return xstrdup (physname
);
391 is_full_physname_constructor
= is_constructor_name (physname
);
393 is_constructor
= is_full_physname_constructor
394 || (newname
&& strcmp (field_name
, newname
) == 0);
397 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
399 if (is_destructor
|| is_full_physname_constructor
)
401 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
402 strcpy (mangled_name
, physname
);
408 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
410 else if (physname
[0] == 't' || physname
[0] == 'Q')
412 /* The physname for template and qualified methods already includes
414 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
420 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
422 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
423 + strlen (buf
) + len
+ strlen (physname
) + 1);
425 mangled_name
= (char *) xmalloc (mangled_name_len
);
427 mangled_name
[0] = '\0';
429 strcpy (mangled_name
, field_name
);
431 strcat (mangled_name
, buf
);
432 /* If the class doesn't have a name, i.e. newname NULL, then we just
433 mangle it using 0 for the length of the class. Thus it gets mangled
434 as something starting with `::' rather than `classname::'. */
436 strcat (mangled_name
, newname
);
438 strcat (mangled_name
, physname
);
439 return (mangled_name
);
442 /* Initialize the cplus_specific structure. 'cplus_specific' should
443 only be allocated for use with cplus symbols. */
446 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
447 struct objfile
*objfile
)
449 /* A language_specific structure should not have been previously
451 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
452 gdb_assert (objfile
!= NULL
);
454 gsymbol
->language_specific
.cplus_specific
=
455 OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct cplus_specific
);
458 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
459 correctly allocated. For C++ symbols a cplus_specific struct is
460 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
461 OBJFILE can be NULL. */
464 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
466 struct objfile
*objfile
)
468 if (gsymbol
->language
== language_cplus
)
470 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
471 symbol_init_cplus_specific (gsymbol
, objfile
);
473 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
476 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
479 /* Return the demangled name of GSYMBOL. */
482 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
484 if (gsymbol
->language
== language_cplus
)
486 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
487 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
492 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
496 /* Initialize the language dependent portion of a symbol
497 depending upon the language for the symbol. */
500 symbol_set_language (struct general_symbol_info
*gsymbol
,
501 enum language language
)
503 gsymbol
->language
= language
;
504 if (gsymbol
->language
== language_d
505 || gsymbol
->language
== language_go
506 || gsymbol
->language
== language_java
507 || gsymbol
->language
== language_objc
508 || gsymbol
->language
== language_fortran
)
510 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
512 else if (gsymbol
->language
== language_cplus
)
513 gsymbol
->language_specific
.cplus_specific
= NULL
;
516 memset (&gsymbol
->language_specific
, 0,
517 sizeof (gsymbol
->language_specific
));
521 /* Functions to initialize a symbol's mangled name. */
523 /* Objects of this type are stored in the demangled name hash table. */
524 struct demangled_name_entry
530 /* Hash function for the demangled name hash. */
533 hash_demangled_name_entry (const void *data
)
535 const struct demangled_name_entry
*e
= data
;
537 return htab_hash_string (e
->mangled
);
540 /* Equality function for the demangled name hash. */
543 eq_demangled_name_entry (const void *a
, const void *b
)
545 const struct demangled_name_entry
*da
= a
;
546 const struct demangled_name_entry
*db
= b
;
548 return strcmp (da
->mangled
, db
->mangled
) == 0;
551 /* Create the hash table used for demangled names. Each hash entry is
552 a pair of strings; one for the mangled name and one for the demangled
553 name. The entry is hashed via just the mangled name. */
556 create_demangled_names_hash (struct objfile
*objfile
)
558 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
559 The hash table code will round this up to the next prime number.
560 Choosing a much larger table size wastes memory, and saves only about
561 1% in symbol reading. */
563 objfile
->demangled_names_hash
= htab_create_alloc
564 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
565 NULL
, xcalloc
, xfree
);
568 /* Try to determine the demangled name for a symbol, based on the
569 language of that symbol. If the language is set to language_auto,
570 it will attempt to find any demangling algorithm that works and
571 then set the language appropriately. The returned name is allocated
572 by the demangler and should be xfree'd. */
575 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
578 char *demangled
= NULL
;
580 if (gsymbol
->language
== language_unknown
)
581 gsymbol
->language
= language_auto
;
583 if (gsymbol
->language
== language_objc
584 || gsymbol
->language
== language_auto
)
587 objc_demangle (mangled
, 0);
588 if (demangled
!= NULL
)
590 gsymbol
->language
= language_objc
;
594 if (gsymbol
->language
== language_cplus
595 || gsymbol
->language
== language_auto
)
598 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
599 if (demangled
!= NULL
)
601 gsymbol
->language
= language_cplus
;
605 if (gsymbol
->language
== language_java
)
608 cplus_demangle (mangled
,
609 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
610 if (demangled
!= NULL
)
612 gsymbol
->language
= language_java
;
616 if (gsymbol
->language
== language_d
617 || gsymbol
->language
== language_auto
)
619 demangled
= d_demangle(mangled
, 0);
620 if (demangled
!= NULL
)
622 gsymbol
->language
= language_d
;
626 /* FIXME(dje): Continually adding languages here is clumsy.
627 Better to just call la_demangle if !auto, and if auto then call
628 a utility routine that tries successive languages in turn and reports
629 which one it finds. I realize the la_demangle options may be different
630 for different languages but there's already a FIXME for that. */
631 if (gsymbol
->language
== language_go
632 || gsymbol
->language
== language_auto
)
634 demangled
= go_demangle (mangled
, 0);
635 if (demangled
!= NULL
)
637 gsymbol
->language
= language_go
;
642 /* We could support `gsymbol->language == language_fortran' here to provide
643 module namespaces also for inferiors with only minimal symbol table (ELF
644 symbols). Just the mangling standard is not standardized across compilers
645 and there is no DW_AT_producer available for inferiors with only the ELF
646 symbols to check the mangling kind. */
650 /* Set both the mangled and demangled (if any) names for GSYMBOL based
651 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
652 objfile's obstack; but if COPY_NAME is 0 and if NAME is
653 NUL-terminated, then this function assumes that NAME is already
654 correctly saved (either permanently or with a lifetime tied to the
655 objfile), and it will not be copied.
657 The hash table corresponding to OBJFILE is used, and the memory
658 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
659 so the pointer can be discarded after calling this function. */
661 /* We have to be careful when dealing with Java names: when we run
662 into a Java minimal symbol, we don't know it's a Java symbol, so it
663 gets demangled as a C++ name. This is unfortunate, but there's not
664 much we can do about it: but when demangling partial symbols and
665 regular symbols, we'd better not reuse the wrong demangled name.
666 (See PR gdb/1039.) We solve this by putting a distinctive prefix
667 on Java names when storing them in the hash table. */
669 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
670 don't mind the Java prefix so much: different languages have
671 different demangling requirements, so it's only natural that we
672 need to keep language data around in our demangling cache. But
673 it's not good that the minimal symbol has the wrong demangled name.
674 Unfortunately, I can't think of any easy solution to that
677 #define JAVA_PREFIX "##JAVA$$"
678 #define JAVA_PREFIX_LEN 8
681 symbol_set_names (struct general_symbol_info
*gsymbol
,
682 const char *linkage_name
, int len
, int copy_name
,
683 struct objfile
*objfile
)
685 struct demangled_name_entry
**slot
;
686 /* A 0-terminated copy of the linkage name. */
687 const char *linkage_name_copy
;
688 /* A copy of the linkage name that might have a special Java prefix
689 added to it, for use when looking names up in the hash table. */
690 const char *lookup_name
;
691 /* The length of lookup_name. */
693 struct demangled_name_entry entry
;
695 if (gsymbol
->language
== language_ada
)
697 /* In Ada, we do the symbol lookups using the mangled name, so
698 we can save some space by not storing the demangled name.
700 As a side note, we have also observed some overlap between
701 the C++ mangling and Ada mangling, similarly to what has
702 been observed with Java. Because we don't store the demangled
703 name with the symbol, we don't need to use the same trick
706 gsymbol
->name
= linkage_name
;
709 char *name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
711 memcpy (name
, linkage_name
, len
);
713 gsymbol
->name
= name
;
715 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
720 if (objfile
->demangled_names_hash
== NULL
)
721 create_demangled_names_hash (objfile
);
723 /* The stabs reader generally provides names that are not
724 NUL-terminated; most of the other readers don't do this, so we
725 can just use the given copy, unless we're in the Java case. */
726 if (gsymbol
->language
== language_java
)
730 lookup_len
= len
+ JAVA_PREFIX_LEN
;
731 alloc_name
= alloca (lookup_len
+ 1);
732 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
733 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
734 alloc_name
[lookup_len
] = '\0';
736 lookup_name
= alloc_name
;
737 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
739 else if (linkage_name
[len
] != '\0')
744 alloc_name
= alloca (lookup_len
+ 1);
745 memcpy (alloc_name
, linkage_name
, len
);
746 alloc_name
[lookup_len
] = '\0';
748 lookup_name
= alloc_name
;
749 linkage_name_copy
= alloc_name
;
754 lookup_name
= linkage_name
;
755 linkage_name_copy
= linkage_name
;
758 entry
.mangled
= (char *) lookup_name
;
759 slot
= ((struct demangled_name_entry
**)
760 htab_find_slot (objfile
->demangled_names_hash
,
763 /* If this name is not in the hash table, add it. */
765 /* A C version of the symbol may have already snuck into the table.
766 This happens to, e.g., main.init (__go_init_main). Cope. */
767 || (gsymbol
->language
== language_go
768 && (*slot
)->demangled
[0] == '\0'))
770 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
772 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
774 /* Suppose we have demangled_name==NULL, copy_name==0, and
775 lookup_name==linkage_name. In this case, we already have the
776 mangled name saved, and we don't have a demangled name. So,
777 you might think we could save a little space by not recording
778 this in the hash table at all.
780 It turns out that it is actually important to still save such
781 an entry in the hash table, because storing this name gives
782 us better bcache hit rates for partial symbols. */
783 if (!copy_name
&& lookup_name
== linkage_name
)
785 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
786 offsetof (struct demangled_name_entry
,
788 + demangled_len
+ 1);
789 (*slot
)->mangled
= (char *) lookup_name
;
793 /* If we must copy the mangled name, put it directly after
794 the demangled name so we can have a single
796 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
797 offsetof (struct demangled_name_entry
,
799 + lookup_len
+ demangled_len
+ 2);
800 (*slot
)->mangled
= &((*slot
)->demangled
[demangled_len
+ 1]);
801 strcpy ((*slot
)->mangled
, lookup_name
);
804 if (demangled_name
!= NULL
)
806 strcpy ((*slot
)->demangled
, demangled_name
);
807 xfree (demangled_name
);
810 (*slot
)->demangled
[0] = '\0';
813 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
814 if ((*slot
)->demangled
[0] != '\0')
815 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
, objfile
);
817 symbol_set_demangled_name (gsymbol
, NULL
, objfile
);
820 /* Return the source code name of a symbol. In languages where
821 demangling is necessary, this is the demangled name. */
824 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
826 switch (gsymbol
->language
)
833 case language_fortran
:
834 if (symbol_get_demangled_name (gsymbol
) != NULL
)
835 return symbol_get_demangled_name (gsymbol
);
838 if (symbol_get_demangled_name (gsymbol
) != NULL
)
839 return symbol_get_demangled_name (gsymbol
);
841 return ada_decode_symbol (gsymbol
);
846 return gsymbol
->name
;
849 /* Return the demangled name for a symbol based on the language for
850 that symbol. If no demangled name exists, return NULL. */
853 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
855 const char *dem_name
= NULL
;
857 switch (gsymbol
->language
)
864 case language_fortran
:
865 dem_name
= symbol_get_demangled_name (gsymbol
);
868 dem_name
= symbol_get_demangled_name (gsymbol
);
869 if (dem_name
== NULL
)
870 dem_name
= ada_decode_symbol (gsymbol
);
878 /* Return the search name of a symbol---generally the demangled or
879 linkage name of the symbol, depending on how it will be searched for.
880 If there is no distinct demangled name, then returns the same value
881 (same pointer) as SYMBOL_LINKAGE_NAME. */
884 symbol_search_name (const struct general_symbol_info
*gsymbol
)
886 if (gsymbol
->language
== language_ada
)
887 return gsymbol
->name
;
889 return symbol_natural_name (gsymbol
);
892 /* Initialize the structure fields to zero values. */
895 init_sal (struct symtab_and_line
*sal
)
903 sal
->explicit_pc
= 0;
904 sal
->explicit_line
= 0;
909 /* Return 1 if the two sections are the same, or if they could
910 plausibly be copies of each other, one in an original object
911 file and another in a separated debug file. */
914 matching_obj_sections (struct obj_section
*obj_first
,
915 struct obj_section
*obj_second
)
917 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
918 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
921 /* If they're the same section, then they match. */
925 /* If either is NULL, give up. */
926 if (first
== NULL
|| second
== NULL
)
929 /* This doesn't apply to absolute symbols. */
930 if (first
->owner
== NULL
|| second
->owner
== NULL
)
933 /* If they're in the same object file, they must be different sections. */
934 if (first
->owner
== second
->owner
)
937 /* Check whether the two sections are potentially corresponding. They must
938 have the same size, address, and name. We can't compare section indexes,
939 which would be more reliable, because some sections may have been
941 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
944 /* In-memory addresses may start at a different offset, relativize them. */
945 if (bfd_get_section_vma (first
->owner
, first
)
946 - bfd_get_start_address (first
->owner
)
947 != bfd_get_section_vma (second
->owner
, second
)
948 - bfd_get_start_address (second
->owner
))
951 if (bfd_get_section_name (first
->owner
, first
) == NULL
952 || bfd_get_section_name (second
->owner
, second
) == NULL
953 || strcmp (bfd_get_section_name (first
->owner
, first
),
954 bfd_get_section_name (second
->owner
, second
)) != 0)
957 /* Otherwise check that they are in corresponding objfiles. */
960 if (obj
->obfd
== first
->owner
)
962 gdb_assert (obj
!= NULL
);
964 if (obj
->separate_debug_objfile
!= NULL
965 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
967 if (obj
->separate_debug_objfile_backlink
!= NULL
968 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
975 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
977 struct objfile
*objfile
;
978 struct minimal_symbol
*msymbol
;
980 /* If we know that this is not a text address, return failure. This is
981 necessary because we loop based on texthigh and textlow, which do
982 not include the data ranges. */
983 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
985 && (MSYMBOL_TYPE (msymbol
) == mst_data
986 || MSYMBOL_TYPE (msymbol
) == mst_bss
987 || MSYMBOL_TYPE (msymbol
) == mst_abs
988 || MSYMBOL_TYPE (msymbol
) == mst_file_data
989 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
992 ALL_OBJFILES (objfile
)
994 struct symtab
*result
= NULL
;
997 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1006 /* Debug symbols usually don't have section information. We need to dig that
1007 out of the minimal symbols and stash that in the debug symbol. */
1010 fixup_section (struct general_symbol_info
*ginfo
,
1011 CORE_ADDR addr
, struct objfile
*objfile
)
1013 struct minimal_symbol
*msym
;
1015 /* First, check whether a minimal symbol with the same name exists
1016 and points to the same address. The address check is required
1017 e.g. on PowerPC64, where the minimal symbol for a function will
1018 point to the function descriptor, while the debug symbol will
1019 point to the actual function code. */
1020 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1023 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1024 ginfo
->section
= SYMBOL_SECTION (msym
);
1028 /* Static, function-local variables do appear in the linker
1029 (minimal) symbols, but are frequently given names that won't
1030 be found via lookup_minimal_symbol(). E.g., it has been
1031 observed in frv-uclinux (ELF) executables that a static,
1032 function-local variable named "foo" might appear in the
1033 linker symbols as "foo.6" or "foo.3". Thus, there is no
1034 point in attempting to extend the lookup-by-name mechanism to
1035 handle this case due to the fact that there can be multiple
1038 So, instead, search the section table when lookup by name has
1039 failed. The ``addr'' and ``endaddr'' fields may have already
1040 been relocated. If so, the relocation offset (i.e. the
1041 ANOFFSET value) needs to be subtracted from these values when
1042 performing the comparison. We unconditionally subtract it,
1043 because, when no relocation has been performed, the ANOFFSET
1044 value will simply be zero.
1046 The address of the symbol whose section we're fixing up HAS
1047 NOT BEEN adjusted (relocated) yet. It can't have been since
1048 the section isn't yet known and knowing the section is
1049 necessary in order to add the correct relocation value. In
1050 other words, we wouldn't even be in this function (attempting
1051 to compute the section) if it were already known.
1053 Note that it is possible to search the minimal symbols
1054 (subtracting the relocation value if necessary) to find the
1055 matching minimal symbol, but this is overkill and much less
1056 efficient. It is not necessary to find the matching minimal
1057 symbol, only its section.
1059 Note that this technique (of doing a section table search)
1060 can fail when unrelocated section addresses overlap. For
1061 this reason, we still attempt a lookup by name prior to doing
1062 a search of the section table. */
1064 struct obj_section
*s
;
1066 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1068 int idx
= s
->the_bfd_section
->index
;
1069 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1071 if (obj_section_addr (s
) - offset
<= addr
1072 && addr
< obj_section_endaddr (s
) - offset
)
1074 ginfo
->obj_section
= s
;
1075 ginfo
->section
= idx
;
1083 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1090 if (SYMBOL_OBJ_SECTION (sym
))
1093 /* We either have an OBJFILE, or we can get at it from the sym's
1094 symtab. Anything else is a bug. */
1095 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1097 if (objfile
== NULL
)
1098 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1100 /* We should have an objfile by now. */
1101 gdb_assert (objfile
);
1103 switch (SYMBOL_CLASS (sym
))
1107 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1110 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1114 /* Nothing else will be listed in the minsyms -- no use looking
1119 fixup_section (&sym
->ginfo
, addr
, objfile
);
1124 /* Compute the demangled form of NAME as used by the various symbol
1125 lookup functions. The result is stored in *RESULT_NAME. Returns a
1126 cleanup which can be used to clean up the result.
1128 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1129 Normally, Ada symbol lookups are performed using the encoded name
1130 rather than the demangled name, and so it might seem to make sense
1131 for this function to return an encoded version of NAME.
1132 Unfortunately, we cannot do this, because this function is used in
1133 circumstances where it is not appropriate to try to encode NAME.
1134 For instance, when displaying the frame info, we demangle the name
1135 of each parameter, and then perform a symbol lookup inside our
1136 function using that demangled name. In Ada, certain functions
1137 have internally-generated parameters whose name contain uppercase
1138 characters. Encoding those name would result in those uppercase
1139 characters to become lowercase, and thus cause the symbol lookup
1143 demangle_for_lookup (const char *name
, enum language lang
,
1144 const char **result_name
)
1146 char *demangled_name
= NULL
;
1147 const char *modified_name
= NULL
;
1148 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1150 modified_name
= name
;
1152 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1153 lookup, so we can always binary search. */
1154 if (lang
== language_cplus
)
1156 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1159 modified_name
= demangled_name
;
1160 make_cleanup (xfree
, demangled_name
);
1164 /* If we were given a non-mangled name, canonicalize it
1165 according to the language (so far only for C++). */
1166 demangled_name
= cp_canonicalize_string (name
);
1169 modified_name
= demangled_name
;
1170 make_cleanup (xfree
, demangled_name
);
1174 else if (lang
== language_java
)
1176 demangled_name
= cplus_demangle (name
,
1177 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1180 modified_name
= demangled_name
;
1181 make_cleanup (xfree
, demangled_name
);
1184 else if (lang
== language_d
)
1186 demangled_name
= d_demangle (name
, 0);
1189 modified_name
= demangled_name
;
1190 make_cleanup (xfree
, demangled_name
);
1193 else if (lang
== language_go
)
1195 demangled_name
= go_demangle (name
, 0);
1198 modified_name
= demangled_name
;
1199 make_cleanup (xfree
, demangled_name
);
1203 *result_name
= modified_name
;
1207 /* Find the definition for a specified symbol name NAME
1208 in domain DOMAIN, visible from lexical block BLOCK.
1209 Returns the struct symbol pointer, or zero if no symbol is found.
1210 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1211 NAME is a field of the current implied argument `this'. If so set
1212 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1213 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1214 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1216 /* This function (or rather its subordinates) have a bunch of loops and
1217 it would seem to be attractive to put in some QUIT's (though I'm not really
1218 sure whether it can run long enough to be really important). But there
1219 are a few calls for which it would appear to be bad news to quit
1220 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1221 that there is C++ code below which can error(), but that probably
1222 doesn't affect these calls since they are looking for a known
1223 variable and thus can probably assume it will never hit the C++
1227 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1228 const domain_enum domain
, enum language lang
,
1229 int *is_a_field_of_this
)
1231 const char *modified_name
;
1232 struct symbol
*returnval
;
1233 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1235 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1236 is_a_field_of_this
);
1237 do_cleanups (cleanup
);
1242 /* Behave like lookup_symbol_in_language, but performed with the
1243 current language. */
1246 lookup_symbol (const char *name
, const struct block
*block
,
1247 domain_enum domain
, int *is_a_field_of_this
)
1249 return lookup_symbol_in_language (name
, block
, domain
,
1250 current_language
->la_language
,
1251 is_a_field_of_this
);
1254 /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
1255 found, or NULL if not found. */
1258 lookup_language_this (const struct language_defn
*lang
,
1259 const struct block
*block
)
1261 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1268 sym
= lookup_block_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1271 block_found
= block
;
1274 if (BLOCK_FUNCTION (block
))
1276 block
= BLOCK_SUPERBLOCK (block
);
1282 /* Behave like lookup_symbol except that NAME is the natural name
1283 (e.g., demangled name) of the symbol that we're looking for. */
1285 static struct symbol
*
1286 lookup_symbol_aux (const char *name
, const struct block
*block
,
1287 const domain_enum domain
, enum language language
,
1288 int *is_a_field_of_this
)
1291 const struct language_defn
*langdef
;
1293 /* Make sure we do something sensible with is_a_field_of_this, since
1294 the callers that set this parameter to some non-null value will
1295 certainly use it later and expect it to be either 0 or 1.
1296 If we don't set it, the contents of is_a_field_of_this are
1298 if (is_a_field_of_this
!= NULL
)
1299 *is_a_field_of_this
= 0;
1301 /* Search specified block and its superiors. Don't search
1302 STATIC_BLOCK or GLOBAL_BLOCK. */
1304 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1308 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1309 check to see if NAME is a field of `this'. */
1311 langdef
= language_def (language
);
1313 if (is_a_field_of_this
!= NULL
)
1315 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1319 struct type
*t
= sym
->type
;
1321 /* I'm not really sure that type of this can ever
1322 be typedefed; just be safe. */
1324 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1325 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1326 t
= TYPE_TARGET_TYPE (t
);
1328 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1329 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1330 error (_("Internal error: `%s' is not an aggregate"),
1331 langdef
->la_name_of_this
);
1333 if (check_field (t
, name
))
1335 *is_a_field_of_this
= 1;
1341 /* Now do whatever is appropriate for LANGUAGE to look
1342 up static and global variables. */
1344 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1348 /* Now search all static file-level symbols. Not strictly correct,
1349 but more useful than an error. */
1351 return lookup_static_symbol_aux (name
, domain
);
1354 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1355 first, then check the psymtabs. If a psymtab indicates the existence of the
1356 desired name as a file-level static, then do psymtab-to-symtab conversion on
1357 the fly and return the found symbol. */
1360 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1362 struct objfile
*objfile
;
1365 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1369 ALL_OBJFILES (objfile
)
1371 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1379 /* Check to see if the symbol is defined in BLOCK or its superiors.
1380 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1382 static struct symbol
*
1383 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1384 const domain_enum domain
,
1385 enum language language
)
1388 const struct block
*static_block
= block_static_block (block
);
1389 const char *scope
= block_scope (block
);
1391 /* Check if either no block is specified or it's a global block. */
1393 if (static_block
== NULL
)
1396 while (block
!= static_block
)
1398 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1402 if (language
== language_cplus
|| language
== language_fortran
)
1404 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1410 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1412 block
= BLOCK_SUPERBLOCK (block
);
1415 /* We've reached the edge of the function without finding a result. */
1420 /* Look up OBJFILE to BLOCK. */
1423 lookup_objfile_from_block (const struct block
*block
)
1425 struct objfile
*obj
;
1431 block
= block_global_block (block
);
1432 /* Go through SYMTABS. */
1433 ALL_SYMTABS (obj
, s
)
1434 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1436 if (obj
->separate_debug_objfile_backlink
)
1437 obj
= obj
->separate_debug_objfile_backlink
;
1445 /* Look up a symbol in a block; if found, fixup the symbol, and set
1446 block_found appropriately. */
1449 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1450 const domain_enum domain
)
1454 sym
= lookup_block_symbol (block
, name
, domain
);
1457 block_found
= block
;
1458 return fixup_symbol_section (sym
, NULL
);
1464 /* Check all global symbols in OBJFILE in symtabs and
1468 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1470 const domain_enum domain
)
1472 const struct objfile
*objfile
;
1474 struct blockvector
*bv
;
1475 const struct block
*block
;
1478 for (objfile
= main_objfile
;
1480 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1482 /* Go through symtabs. */
1483 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1485 bv
= BLOCKVECTOR (s
);
1486 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1487 sym
= lookup_block_symbol (block
, name
, domain
);
1490 block_found
= block
;
1491 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1495 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1504 /* Check to see if the symbol is defined in one of the OBJFILE's
1505 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1506 depending on whether or not we want to search global symbols or
1509 static struct symbol
*
1510 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1511 const char *name
, const domain_enum domain
)
1513 struct symbol
*sym
= NULL
;
1514 struct blockvector
*bv
;
1515 const struct block
*block
;
1519 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, block_index
,
1522 ALL_OBJFILE_SYMTABS (objfile
, s
)
1525 bv
= BLOCKVECTOR (s
);
1526 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1527 sym
= lookup_block_symbol (block
, name
, domain
);
1530 block_found
= block
;
1531 return fixup_symbol_section (sym
, objfile
);
1538 /* Same as lookup_symbol_aux_objfile, except that it searches all
1539 objfiles. Return the first match found. */
1541 static struct symbol
*
1542 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1543 const domain_enum domain
)
1546 struct objfile
*objfile
;
1548 ALL_OBJFILES (objfile
)
1550 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1558 /* Wrapper around lookup_symbol_aux_objfile for search_symbols.
1559 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1560 and all related objfiles. */
1562 static struct symbol
*
1563 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1564 const char *linkage_name
,
1567 enum language lang
= current_language
->la_language
;
1568 const char *modified_name
;
1569 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1571 struct objfile
*main_objfile
, *cur_objfile
;
1573 if (objfile
->separate_debug_objfile_backlink
)
1574 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1576 main_objfile
= objfile
;
1578 for (cur_objfile
= main_objfile
;
1580 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1584 sym
= lookup_symbol_aux_objfile (cur_objfile
, GLOBAL_BLOCK
,
1585 modified_name
, domain
);
1587 sym
= lookup_symbol_aux_objfile (cur_objfile
, STATIC_BLOCK
,
1588 modified_name
, domain
);
1591 do_cleanups (cleanup
);
1596 do_cleanups (cleanup
);
1600 /* A helper function for lookup_symbol_aux that interfaces with the
1601 "quick" symbol table functions. */
1603 static struct symbol
*
1604 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1605 const char *name
, const domain_enum domain
)
1607 struct symtab
*symtab
;
1608 struct blockvector
*bv
;
1609 const struct block
*block
;
1614 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1618 bv
= BLOCKVECTOR (symtab
);
1619 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1620 sym
= lookup_block_symbol (block
, name
, domain
);
1623 /* This shouldn't be necessary, but as a last resort try
1624 looking in the statics even though the psymtab claimed
1625 the symbol was global, or vice-versa. It's possible
1626 that the psymtab gets it wrong in some cases. */
1628 /* FIXME: carlton/2002-09-30: Should we really do that?
1629 If that happens, isn't it likely to be a GDB error, in
1630 which case we should fix the GDB error rather than
1631 silently dealing with it here? So I'd vote for
1632 removing the check for the symbol in the other
1634 block
= BLOCKVECTOR_BLOCK (bv
,
1635 kind
== GLOBAL_BLOCK
?
1636 STATIC_BLOCK
: GLOBAL_BLOCK
);
1637 sym
= lookup_block_symbol (block
, name
, domain
);
1640 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1641 %s may be an inlined function, or may be a template function\n\
1642 (if a template, try specifying an instantiation: %s<type>)."),
1643 kind
== GLOBAL_BLOCK
? "global" : "static",
1644 name
, symtab
->filename
, name
, name
);
1646 return fixup_symbol_section (sym
, objfile
);
1649 /* A default version of lookup_symbol_nonlocal for use by languages
1650 that can't think of anything better to do. This implements the C
1654 basic_lookup_symbol_nonlocal (const char *name
,
1655 const struct block
*block
,
1656 const domain_enum domain
)
1660 /* NOTE: carlton/2003-05-19: The comments below were written when
1661 this (or what turned into this) was part of lookup_symbol_aux;
1662 I'm much less worried about these questions now, since these
1663 decisions have turned out well, but I leave these comments here
1666 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1667 not it would be appropriate to search the current global block
1668 here as well. (That's what this code used to do before the
1669 is_a_field_of_this check was moved up.) On the one hand, it's
1670 redundant with the lookup_symbol_aux_symtabs search that happens
1671 next. On the other hand, if decode_line_1 is passed an argument
1672 like filename:var, then the user presumably wants 'var' to be
1673 searched for in filename. On the third hand, there shouldn't be
1674 multiple global variables all of which are named 'var', and it's
1675 not like decode_line_1 has ever restricted its search to only
1676 global variables in a single filename. All in all, only
1677 searching the static block here seems best: it's correct and it's
1680 /* NOTE: carlton/2002-12-05: There's also a possible performance
1681 issue here: if you usually search for global symbols in the
1682 current file, then it would be slightly better to search the
1683 current global block before searching all the symtabs. But there
1684 are other factors that have a much greater effect on performance
1685 than that one, so I don't think we should worry about that for
1688 sym
= lookup_symbol_static (name
, block
, domain
);
1692 return lookup_symbol_global (name
, block
, domain
);
1695 /* Lookup a symbol in the static block associated to BLOCK, if there
1696 is one; do nothing if BLOCK is NULL or a global block. */
1699 lookup_symbol_static (const char *name
,
1700 const struct block
*block
,
1701 const domain_enum domain
)
1703 const struct block
*static_block
= block_static_block (block
);
1705 if (static_block
!= NULL
)
1706 return lookup_symbol_aux_block (name
, static_block
, domain
);
1711 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1713 struct global_sym_lookup_data
1715 /* The name of the symbol we are searching for. */
1718 /* The domain to use for our search. */
1721 /* The field where the callback should store the symbol if found.
1722 It should be initialized to NULL before the search is started. */
1723 struct symbol
*result
;
1726 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1727 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1728 OBJFILE. The arguments for the search are passed via CB_DATA,
1729 which in reality is a pointer to struct global_sym_lookup_data. */
1732 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1735 struct global_sym_lookup_data
*data
=
1736 (struct global_sym_lookup_data
*) cb_data
;
1738 gdb_assert (data
->result
== NULL
);
1740 data
->result
= lookup_symbol_aux_objfile (objfile
, GLOBAL_BLOCK
,
1741 data
->name
, data
->domain
);
1742 if (data
->result
== NULL
)
1743 data
->result
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
,
1744 data
->name
, data
->domain
);
1746 /* If we found a match, tell the iterator to stop. Otherwise,
1748 return (data
->result
!= NULL
);
1751 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1755 lookup_symbol_global (const char *name
,
1756 const struct block
*block
,
1757 const domain_enum domain
)
1759 struct symbol
*sym
= NULL
;
1760 struct objfile
*objfile
= NULL
;
1761 struct global_sym_lookup_data lookup_data
;
1763 /* Call library-specific lookup procedure. */
1764 objfile
= lookup_objfile_from_block (block
);
1765 if (objfile
!= NULL
)
1766 sym
= solib_global_lookup (objfile
, name
, domain
);
1770 memset (&lookup_data
, 0, sizeof (lookup_data
));
1771 lookup_data
.name
= name
;
1772 lookup_data
.domain
= domain
;
1773 gdbarch_iterate_over_objfiles_in_search_order
1774 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch
,
1775 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1777 return lookup_data
.result
;
1781 symbol_matches_domain (enum language symbol_language
,
1782 domain_enum symbol_domain
,
1785 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1786 A Java class declaration also defines a typedef for the class.
1787 Similarly, any Ada type declaration implicitly defines a typedef. */
1788 if (symbol_language
== language_cplus
1789 || symbol_language
== language_d
1790 || symbol_language
== language_java
1791 || symbol_language
== language_ada
)
1793 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1794 && symbol_domain
== STRUCT_DOMAIN
)
1797 /* For all other languages, strict match is required. */
1798 return (symbol_domain
== domain
);
1801 /* Look up a type named NAME in the struct_domain. The type returned
1802 must not be opaque -- i.e., must have at least one field
1806 lookup_transparent_type (const char *name
)
1808 return current_language
->la_lookup_transparent_type (name
);
1811 /* A helper for basic_lookup_transparent_type that interfaces with the
1812 "quick" symbol table functions. */
1814 static struct type
*
1815 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1818 struct symtab
*symtab
;
1819 struct blockvector
*bv
;
1820 struct block
*block
;
1825 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1829 bv
= BLOCKVECTOR (symtab
);
1830 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1831 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1834 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1836 /* This shouldn't be necessary, but as a last resort
1837 * try looking in the 'other kind' even though the psymtab
1838 * claimed the symbol was one thing. It's possible that
1839 * the psymtab gets it wrong in some cases.
1841 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1842 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1844 /* FIXME; error is wrong in one case. */
1846 Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1847 %s may be an inlined function, or may be a template function\n\
1848 (if a template, try specifying an instantiation: %s<type>)."),
1849 name
, symtab
->filename
, name
, name
);
1851 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1852 return SYMBOL_TYPE (sym
);
1857 /* The standard implementation of lookup_transparent_type. This code
1858 was modeled on lookup_symbol -- the parts not relevant to looking
1859 up types were just left out. In particular it's assumed here that
1860 types are available in struct_domain and only at file-static or
1864 basic_lookup_transparent_type (const char *name
)
1867 struct symtab
*s
= NULL
;
1868 struct blockvector
*bv
;
1869 struct objfile
*objfile
;
1870 struct block
*block
;
1873 /* Now search all the global symbols. Do the symtab's first, then
1874 check the psymtab's. If a psymtab indicates the existence
1875 of the desired name as a global, then do psymtab-to-symtab
1876 conversion on the fly and return the found symbol. */
1878 ALL_OBJFILES (objfile
)
1881 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1883 name
, STRUCT_DOMAIN
);
1885 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1887 bv
= BLOCKVECTOR (s
);
1888 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1889 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1890 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1892 return SYMBOL_TYPE (sym
);
1897 ALL_OBJFILES (objfile
)
1899 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1904 /* Now search the static file-level symbols.
1905 Not strictly correct, but more useful than an error.
1906 Do the symtab's first, then
1907 check the psymtab's. If a psymtab indicates the existence
1908 of the desired name as a file-level static, then do psymtab-to-symtab
1909 conversion on the fly and return the found symbol. */
1911 ALL_OBJFILES (objfile
)
1914 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, STATIC_BLOCK
,
1915 name
, STRUCT_DOMAIN
);
1917 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1919 bv
= BLOCKVECTOR (s
);
1920 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1921 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1922 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1924 return SYMBOL_TYPE (sym
);
1929 ALL_OBJFILES (objfile
)
1931 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1936 return (struct type
*) 0;
1939 /* Find the name of the file containing main(). */
1940 /* FIXME: What about languages without main() or specially linked
1941 executables that have no main() ? */
1944 find_main_filename (void)
1946 struct objfile
*objfile
;
1947 char *name
= main_name ();
1949 ALL_OBJFILES (objfile
)
1955 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1962 /* Search BLOCK for symbol NAME in DOMAIN.
1964 Note that if NAME is the demangled form of a C++ symbol, we will fail
1965 to find a match during the binary search of the non-encoded names, but
1966 for now we don't worry about the slight inefficiency of looking for
1967 a match we'll never find, since it will go pretty quick. Once the
1968 binary search terminates, we drop through and do a straight linear
1969 search on the symbols. Each symbol which is marked as being a ObjC/C++
1970 symbol (language_cplus or language_objc set) has both the encoded and
1971 non-encoded names tested for a match. */
1974 lookup_block_symbol (const struct block
*block
, const char *name
,
1975 const domain_enum domain
)
1977 struct block_iterator iter
;
1980 if (!BLOCK_FUNCTION (block
))
1982 for (sym
= block_iter_name_first (block
, name
, &iter
);
1984 sym
= block_iter_name_next (name
, &iter
))
1986 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1987 SYMBOL_DOMAIN (sym
), domain
))
1994 /* Note that parameter symbols do not always show up last in the
1995 list; this loop makes sure to take anything else other than
1996 parameter symbols first; it only uses parameter symbols as a
1997 last resort. Note that this only takes up extra computation
2000 struct symbol
*sym_found
= NULL
;
2002 for (sym
= block_iter_name_first (block
, name
, &iter
);
2004 sym
= block_iter_name_next (name
, &iter
))
2006 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2007 SYMBOL_DOMAIN (sym
), domain
))
2010 if (!SYMBOL_IS_ARGUMENT (sym
))
2016 return (sym_found
); /* Will be NULL if not found. */
2020 /* Iterate over the symbols named NAME, matching DOMAIN, starting with
2023 For each symbol that matches, CALLBACK is called. The symbol and
2024 DATA are passed to the callback.
2026 If CALLBACK returns zero, the iteration ends. Otherwise, the
2027 search continues. This function iterates upward through blocks.
2028 When the outermost block has been finished, the function
2032 iterate_over_symbols (const struct block
*block
, const char *name
,
2033 const domain_enum domain
,
2034 symbol_found_callback_ftype
*callback
,
2039 struct block_iterator iter
;
2042 for (sym
= block_iter_name_first (block
, name
, &iter
);
2044 sym
= block_iter_name_next (name
, &iter
))
2046 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2047 SYMBOL_DOMAIN (sym
), domain
))
2049 if (!callback (sym
, data
))
2054 block
= BLOCK_SUPERBLOCK (block
);
2058 /* Find the symtab associated with PC and SECTION. Look through the
2059 psymtabs and read in another symtab if necessary. */
2062 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2065 struct blockvector
*bv
;
2066 struct symtab
*s
= NULL
;
2067 struct symtab
*best_s
= NULL
;
2068 struct objfile
*objfile
;
2069 struct program_space
*pspace
;
2070 CORE_ADDR distance
= 0;
2071 struct minimal_symbol
*msymbol
;
2073 pspace
= current_program_space
;
2075 /* If we know that this is not a text address, return failure. This is
2076 necessary because we loop based on the block's high and low code
2077 addresses, which do not include the data ranges, and because
2078 we call find_pc_sect_psymtab which has a similar restriction based
2079 on the partial_symtab's texthigh and textlow. */
2080 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2082 && (MSYMBOL_TYPE (msymbol
) == mst_data
2083 || MSYMBOL_TYPE (msymbol
) == mst_bss
2084 || MSYMBOL_TYPE (msymbol
) == mst_abs
2085 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2086 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2089 /* Search all symtabs for the one whose file contains our address, and which
2090 is the smallest of all the ones containing the address. This is designed
2091 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2092 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2093 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2095 This happens for native ecoff format, where code from included files
2096 gets its own symtab. The symtab for the included file should have
2097 been read in already via the dependency mechanism.
2098 It might be swifter to create several symtabs with the same name
2099 like xcoff does (I'm not sure).
2101 It also happens for objfiles that have their functions reordered.
2102 For these, the symtab we are looking for is not necessarily read in. */
2104 ALL_PRIMARY_SYMTABS (objfile
, s
)
2106 bv
= BLOCKVECTOR (s
);
2107 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2109 if (BLOCK_START (b
) <= pc
2110 && BLOCK_END (b
) > pc
2112 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2114 /* For an objfile that has its functions reordered,
2115 find_pc_psymtab will find the proper partial symbol table
2116 and we simply return its corresponding symtab. */
2117 /* In order to better support objfiles that contain both
2118 stabs and coff debugging info, we continue on if a psymtab
2120 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2122 struct symtab
*result
;
2125 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2134 struct block_iterator iter
;
2135 struct symbol
*sym
= NULL
;
2137 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2139 fixup_symbol_section (sym
, objfile
);
2140 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2144 continue; /* No symbol in this symtab matches
2147 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2155 ALL_OBJFILES (objfile
)
2157 struct symtab
*result
;
2161 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2172 /* Find the symtab associated with PC. Look through the psymtabs and read
2173 in another symtab if necessary. Backward compatibility, no section. */
2176 find_pc_symtab (CORE_ADDR pc
)
2178 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2182 /* Find the source file and line number for a given PC value and SECTION.
2183 Return a structure containing a symtab pointer, a line number,
2184 and a pc range for the entire source line.
2185 The value's .pc field is NOT the specified pc.
2186 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2187 use the line that ends there. Otherwise, in that case, the line
2188 that begins there is used. */
2190 /* The big complication here is that a line may start in one file, and end just
2191 before the start of another file. This usually occurs when you #include
2192 code in the middle of a subroutine. To properly find the end of a line's PC
2193 range, we must search all symtabs associated with this compilation unit, and
2194 find the one whose first PC is closer than that of the next line in this
2197 /* If it's worth the effort, we could be using a binary search. */
2199 struct symtab_and_line
2200 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2203 struct linetable
*l
;
2206 struct linetable_entry
*item
;
2207 struct symtab_and_line val
;
2208 struct blockvector
*bv
;
2209 struct minimal_symbol
*msymbol
;
2210 struct minimal_symbol
*mfunsym
;
2211 struct objfile
*objfile
;
2213 /* Info on best line seen so far, and where it starts, and its file. */
2215 struct linetable_entry
*best
= NULL
;
2216 CORE_ADDR best_end
= 0;
2217 struct symtab
*best_symtab
= 0;
2219 /* Store here the first line number
2220 of a file which contains the line at the smallest pc after PC.
2221 If we don't find a line whose range contains PC,
2222 we will use a line one less than this,
2223 with a range from the start of that file to the first line's pc. */
2224 struct linetable_entry
*alt
= NULL
;
2225 struct symtab
*alt_symtab
= 0;
2227 /* Info on best line seen in this file. */
2229 struct linetable_entry
*prev
;
2231 /* If this pc is not from the current frame,
2232 it is the address of the end of a call instruction.
2233 Quite likely that is the start of the following statement.
2234 But what we want is the statement containing the instruction.
2235 Fudge the pc to make sure we get that. */
2237 init_sal (&val
); /* initialize to zeroes */
2239 val
.pspace
= current_program_space
;
2241 /* It's tempting to assume that, if we can't find debugging info for
2242 any function enclosing PC, that we shouldn't search for line
2243 number info, either. However, GAS can emit line number info for
2244 assembly files --- very helpful when debugging hand-written
2245 assembly code. In such a case, we'd have no debug info for the
2246 function, but we would have line info. */
2251 /* elz: added this because this function returned the wrong
2252 information if the pc belongs to a stub (import/export)
2253 to call a shlib function. This stub would be anywhere between
2254 two functions in the target, and the line info was erroneously
2255 taken to be the one of the line before the pc. */
2257 /* RT: Further explanation:
2259 * We have stubs (trampolines) inserted between procedures.
2261 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2262 * exists in the main image.
2264 * In the minimal symbol table, we have a bunch of symbols
2265 * sorted by start address. The stubs are marked as "trampoline",
2266 * the others appear as text. E.g.:
2268 * Minimal symbol table for main image
2269 * main: code for main (text symbol)
2270 * shr1: stub (trampoline symbol)
2271 * foo: code for foo (text symbol)
2273 * Minimal symbol table for "shr1" image:
2275 * shr1: code for shr1 (text symbol)
2278 * So the code below is trying to detect if we are in the stub
2279 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2280 * and if found, do the symbolization from the real-code address
2281 * rather than the stub address.
2283 * Assumptions being made about the minimal symbol table:
2284 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2285 * if we're really in the trampoline.s If we're beyond it (say
2286 * we're in "foo" in the above example), it'll have a closer
2287 * symbol (the "foo" text symbol for example) and will not
2288 * return the trampoline.
2289 * 2. lookup_minimal_symbol_text() will find a real text symbol
2290 * corresponding to the trampoline, and whose address will
2291 * be different than the trampoline address. I put in a sanity
2292 * check for the address being the same, to avoid an
2293 * infinite recursion.
2295 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2296 if (msymbol
!= NULL
)
2297 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2299 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2301 if (mfunsym
== NULL
)
2302 /* I eliminated this warning since it is coming out
2303 * in the following situation:
2304 * gdb shmain // test program with shared libraries
2305 * (gdb) break shr1 // function in shared lib
2306 * Warning: In stub for ...
2307 * In the above situation, the shared lib is not loaded yet,
2308 * so of course we can't find the real func/line info,
2309 * but the "break" still works, and the warning is annoying.
2310 * So I commented out the warning. RT */
2311 /* warning ("In stub for %s; unable to find real function/line info",
2312 SYMBOL_LINKAGE_NAME (msymbol)); */
2315 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2316 == SYMBOL_VALUE_ADDRESS (msymbol
))
2317 /* Avoid infinite recursion */
2318 /* See above comment about why warning is commented out. */
2319 /* warning ("In stub for %s; unable to find real function/line info",
2320 SYMBOL_LINKAGE_NAME (msymbol)); */
2324 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2328 s
= find_pc_sect_symtab (pc
, section
);
2331 /* If no symbol information, return previous pc. */
2338 bv
= BLOCKVECTOR (s
);
2339 objfile
= s
->objfile
;
2341 /* Look at all the symtabs that share this blockvector.
2342 They all have the same apriori range, that we found was right;
2343 but they have different line tables. */
2345 ALL_OBJFILE_SYMTABS (objfile
, s
)
2347 if (BLOCKVECTOR (s
) != bv
)
2350 /* Find the best line in this symtab. */
2357 /* I think len can be zero if the symtab lacks line numbers
2358 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2359 I'm not sure which, and maybe it depends on the symbol
2365 item
= l
->item
; /* Get first line info. */
2367 /* Is this file's first line closer than the first lines of other files?
2368 If so, record this file, and its first line, as best alternate. */
2369 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2375 for (i
= 0; i
< len
; i
++, item
++)
2377 /* Leave prev pointing to the linetable entry for the last line
2378 that started at or before PC. */
2385 /* At this point, prev points at the line whose start addr is <= pc, and
2386 item points at the next line. If we ran off the end of the linetable
2387 (pc >= start of the last line), then prev == item. If pc < start of
2388 the first line, prev will not be set. */
2390 /* Is this file's best line closer than the best in the other files?
2391 If so, record this file, and its best line, as best so far. Don't
2392 save prev if it represents the end of a function (i.e. line number
2393 0) instead of a real line. */
2395 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2400 /* Discard BEST_END if it's before the PC of the current BEST. */
2401 if (best_end
<= best
->pc
)
2405 /* If another line (denoted by ITEM) is in the linetable and its
2406 PC is after BEST's PC, but before the current BEST_END, then
2407 use ITEM's PC as the new best_end. */
2408 if (best
&& i
< len
&& item
->pc
> best
->pc
2409 && (best_end
== 0 || best_end
> item
->pc
))
2410 best_end
= item
->pc
;
2415 /* If we didn't find any line number info, just return zeros.
2416 We used to return alt->line - 1 here, but that could be
2417 anywhere; if we don't have line number info for this PC,
2418 don't make some up. */
2421 else if (best
->line
== 0)
2423 /* If our best fit is in a range of PC's for which no line
2424 number info is available (line number is zero) then we didn't
2425 find any valid line information. */
2430 val
.symtab
= best_symtab
;
2431 val
.line
= best
->line
;
2433 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2438 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2440 val
.section
= section
;
2444 /* Backward compatibility (no section). */
2446 struct symtab_and_line
2447 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2449 struct obj_section
*section
;
2451 section
= find_pc_overlay (pc
);
2452 if (pc_in_unmapped_range (pc
, section
))
2453 pc
= overlay_mapped_address (pc
, section
);
2454 return find_pc_sect_line (pc
, section
, notcurrent
);
2457 /* Find line number LINE in any symtab whose name is the same as
2460 If found, return the symtab that contains the linetable in which it was
2461 found, set *INDEX to the index in the linetable of the best entry
2462 found, and set *EXACT_MATCH nonzero if the value returned is an
2465 If not found, return NULL. */
2468 find_line_symtab (struct symtab
*symtab
, int line
,
2469 int *index
, int *exact_match
)
2471 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2473 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2477 struct linetable
*best_linetable
;
2478 struct symtab
*best_symtab
;
2480 /* First try looking it up in the given symtab. */
2481 best_linetable
= LINETABLE (symtab
);
2482 best_symtab
= symtab
;
2483 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2484 if (best_index
< 0 || !exact
)
2486 /* Didn't find an exact match. So we better keep looking for
2487 another symtab with the same name. In the case of xcoff,
2488 multiple csects for one source file (produced by IBM's FORTRAN
2489 compiler) produce multiple symtabs (this is unavoidable
2490 assuming csects can be at arbitrary places in memory and that
2491 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2493 /* BEST is the smallest linenumber > LINE so far seen,
2494 or 0 if none has been seen so far.
2495 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2498 struct objfile
*objfile
;
2501 if (best_index
>= 0)
2502 best
= best_linetable
->item
[best_index
].line
;
2506 ALL_OBJFILES (objfile
)
2509 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2513 /* Get symbol full file name if possible. */
2514 symtab_to_fullname (symtab
);
2516 ALL_SYMTABS (objfile
, s
)
2518 struct linetable
*l
;
2521 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2523 if (symtab
->fullname
!= NULL
2524 && symtab_to_fullname (s
) != NULL
2525 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2528 ind
= find_line_common (l
, line
, &exact
, 0);
2538 if (best
== 0 || l
->item
[ind
].line
< best
)
2540 best
= l
->item
[ind
].line
;
2553 *index
= best_index
;
2555 *exact_match
= exact
;
2560 /* Given SYMTAB, returns all the PCs function in the symtab that
2561 exactly match LINE. Returns NULL if there are no exact matches,
2562 but updates BEST_ITEM in this case. */
2565 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2566 struct linetable_entry
**best_item
)
2569 struct symbol
*previous_function
= NULL
;
2570 VEC (CORE_ADDR
) *result
= NULL
;
2572 /* First, collect all the PCs that are at this line. */
2578 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2584 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2586 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2592 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2600 /* Set the PC value for a given source file and line number and return true.
2601 Returns zero for invalid line number (and sets the PC to 0).
2602 The source file is specified with a struct symtab. */
2605 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2607 struct linetable
*l
;
2614 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2617 l
= LINETABLE (symtab
);
2618 *pc
= l
->item
[ind
].pc
;
2625 /* Find the range of pc values in a line.
2626 Store the starting pc of the line into *STARTPTR
2627 and the ending pc (start of next line) into *ENDPTR.
2628 Returns 1 to indicate success.
2629 Returns 0 if could not find the specified line. */
2632 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2635 CORE_ADDR startaddr
;
2636 struct symtab_and_line found_sal
;
2639 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2642 /* This whole function is based on address. For example, if line 10 has
2643 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2644 "info line *0x123" should say the line goes from 0x100 to 0x200
2645 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2646 This also insures that we never give a range like "starts at 0x134
2647 and ends at 0x12c". */
2649 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2650 if (found_sal
.line
!= sal
.line
)
2652 /* The specified line (sal) has zero bytes. */
2653 *startptr
= found_sal
.pc
;
2654 *endptr
= found_sal
.pc
;
2658 *startptr
= found_sal
.pc
;
2659 *endptr
= found_sal
.end
;
2664 /* Given a line table and a line number, return the index into the line
2665 table for the pc of the nearest line whose number is >= the specified one.
2666 Return -1 if none is found. The value is >= 0 if it is an index.
2667 START is the index at which to start searching the line table.
2669 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2672 find_line_common (struct linetable
*l
, int lineno
,
2673 int *exact_match
, int start
)
2678 /* BEST is the smallest linenumber > LINENO so far seen,
2679 or 0 if none has been seen so far.
2680 BEST_INDEX identifies the item for it. */
2682 int best_index
= -1;
2693 for (i
= start
; i
< len
; i
++)
2695 struct linetable_entry
*item
= &(l
->item
[i
]);
2697 if (item
->line
== lineno
)
2699 /* Return the first (lowest address) entry which matches. */
2704 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2711 /* If we got here, we didn't get an exact match. */
2716 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2718 struct symtab_and_line sal
;
2720 sal
= find_pc_line (pc
, 0);
2723 return sal
.symtab
!= 0;
2726 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2727 address for that function that has an entry in SYMTAB's line info
2728 table. If such an entry cannot be found, return FUNC_ADDR
2732 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2734 CORE_ADDR func_start
, func_end
;
2735 struct linetable
*l
;
2738 /* Give up if this symbol has no lineinfo table. */
2739 l
= LINETABLE (symtab
);
2743 /* Get the range for the function's PC values, or give up if we
2744 cannot, for some reason. */
2745 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2748 /* Linetable entries are ordered by PC values, see the commentary in
2749 symtab.h where `struct linetable' is defined. Thus, the first
2750 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2751 address we are looking for. */
2752 for (i
= 0; i
< l
->nitems
; i
++)
2754 struct linetable_entry
*item
= &(l
->item
[i
]);
2756 /* Don't use line numbers of zero, they mark special entries in
2757 the table. See the commentary on symtab.h before the
2758 definition of struct linetable. */
2759 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2766 /* Given a function symbol SYM, find the symtab and line for the start
2768 If the argument FUNFIRSTLINE is nonzero, we want the first line
2769 of real code inside the function. */
2771 struct symtab_and_line
2772 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2774 struct symtab_and_line sal
;
2776 fixup_symbol_section (sym
, NULL
);
2777 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2778 SYMBOL_OBJ_SECTION (sym
), 0);
2780 /* We always should have a line for the function start address.
2781 If we don't, something is odd. Create a plain SAL refering
2782 just the PC and hope that skip_prologue_sal (if requested)
2783 can find a line number for after the prologue. */
2784 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2787 sal
.pspace
= current_program_space
;
2788 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2789 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2793 skip_prologue_sal (&sal
);
2798 /* Adjust SAL to the first instruction past the function prologue.
2799 If the PC was explicitly specified, the SAL is not changed.
2800 If the line number was explicitly specified, at most the SAL's PC
2801 is updated. If SAL is already past the prologue, then do nothing. */
2804 skip_prologue_sal (struct symtab_and_line
*sal
)
2807 struct symtab_and_line start_sal
;
2808 struct cleanup
*old_chain
;
2809 CORE_ADDR pc
, saved_pc
;
2810 struct obj_section
*section
;
2812 struct objfile
*objfile
;
2813 struct gdbarch
*gdbarch
;
2814 struct block
*b
, *function_block
;
2815 int force_skip
, skip
;
2817 /* Do not change the SAL is PC was specified explicitly. */
2818 if (sal
->explicit_pc
)
2821 old_chain
= save_current_space_and_thread ();
2822 switch_to_program_space_and_thread (sal
->pspace
);
2824 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2827 fixup_symbol_section (sym
, NULL
);
2829 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2830 section
= SYMBOL_OBJ_SECTION (sym
);
2831 name
= SYMBOL_LINKAGE_NAME (sym
);
2832 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2836 struct minimal_symbol
*msymbol
2837 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2839 if (msymbol
== NULL
)
2841 do_cleanups (old_chain
);
2845 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2846 section
= SYMBOL_OBJ_SECTION (msymbol
);
2847 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2848 objfile
= msymbol_objfile (msymbol
);
2851 gdbarch
= get_objfile_arch (objfile
);
2853 /* Process the prologue in two passes. In the first pass try to skip the
2854 prologue (SKIP is true) and verify there is a real need for it (indicated
2855 by FORCE_SKIP). If no such reason was found run a second pass where the
2856 prologue is not skipped (SKIP is false). */
2861 /* Be conservative - allow direct PC (without skipping prologue) only if we
2862 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2863 have to be set by the caller so we use SYM instead. */
2864 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2872 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2873 so that gdbarch_skip_prologue has something unique to work on. */
2874 if (section_is_overlay (section
) && !section_is_mapped (section
))
2875 pc
= overlay_unmapped_address (pc
, section
);
2877 /* Skip "first line" of function (which is actually its prologue). */
2878 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2880 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2882 /* For overlays, map pc back into its mapped VMA range. */
2883 pc
= overlay_mapped_address (pc
, section
);
2885 /* Calculate line number. */
2886 start_sal
= find_pc_sect_line (pc
, section
, 0);
2888 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2889 line is still part of the same function. */
2890 if (skip
&& start_sal
.pc
!= pc
2891 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2892 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2893 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2894 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2896 /* First pc of next line */
2898 /* Recalculate the line number (might not be N+1). */
2899 start_sal
= find_pc_sect_line (pc
, section
, 0);
2902 /* On targets with executable formats that don't have a concept of
2903 constructors (ELF with .init has, PE doesn't), gcc emits a call
2904 to `__main' in `main' between the prologue and before user
2906 if (gdbarch_skip_main_prologue_p (gdbarch
)
2907 && name
&& strcmp_iw (name
, "main") == 0)
2909 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2910 /* Recalculate the line number (might not be N+1). */
2911 start_sal
= find_pc_sect_line (pc
, section
, 0);
2915 while (!force_skip
&& skip
--);
2917 /* If we still don't have a valid source line, try to find the first
2918 PC in the lineinfo table that belongs to the same function. This
2919 happens with COFF debug info, which does not seem to have an
2920 entry in lineinfo table for the code after the prologue which has
2921 no direct relation to source. For example, this was found to be
2922 the case with the DJGPP target using "gcc -gcoff" when the
2923 compiler inserted code after the prologue to make sure the stack
2925 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2927 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2928 /* Recalculate the line number. */
2929 start_sal
= find_pc_sect_line (pc
, section
, 0);
2932 do_cleanups (old_chain
);
2934 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2935 forward SAL to the end of the prologue. */
2940 sal
->section
= section
;
2942 /* Unless the explicit_line flag was set, update the SAL line
2943 and symtab to correspond to the modified PC location. */
2944 if (sal
->explicit_line
)
2947 sal
->symtab
= start_sal
.symtab
;
2948 sal
->line
= start_sal
.line
;
2949 sal
->end
= start_sal
.end
;
2951 /* Check if we are now inside an inlined function. If we can,
2952 use the call site of the function instead. */
2953 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2954 function_block
= NULL
;
2957 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2959 else if (BLOCK_FUNCTION (b
) != NULL
)
2961 b
= BLOCK_SUPERBLOCK (b
);
2963 if (function_block
!= NULL
2964 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2966 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2967 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2971 /* If P is of the form "operator[ \t]+..." where `...' is
2972 some legitimate operator text, return a pointer to the
2973 beginning of the substring of the operator text.
2974 Otherwise, return "". */
2977 operator_chars (char *p
, char **end
)
2980 if (strncmp (p
, "operator", 8))
2984 /* Don't get faked out by `operator' being part of a longer
2986 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2989 /* Allow some whitespace between `operator' and the operator symbol. */
2990 while (*p
== ' ' || *p
== '\t')
2993 /* Recognize 'operator TYPENAME'. */
2995 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2999 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3008 case '\\': /* regexp quoting */
3011 if (p
[2] == '=') /* 'operator\*=' */
3013 else /* 'operator\*' */
3017 else if (p
[1] == '[')
3020 error (_("mismatched quoting on brackets, "
3021 "try 'operator\\[\\]'"));
3022 else if (p
[2] == '\\' && p
[3] == ']')
3024 *end
= p
+ 4; /* 'operator\[\]' */
3028 error (_("nothing is allowed between '[' and ']'"));
3032 /* Gratuitous qoute: skip it and move on. */
3054 if (p
[0] == '-' && p
[1] == '>')
3056 /* Struct pointer member operator 'operator->'. */
3059 *end
= p
+ 3; /* 'operator->*' */
3062 else if (p
[2] == '\\')
3064 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3069 *end
= p
+ 2; /* 'operator->' */
3073 if (p
[1] == '=' || p
[1] == p
[0])
3084 error (_("`operator ()' must be specified "
3085 "without whitespace in `()'"));
3090 error (_("`operator ?:' must be specified "
3091 "without whitespace in `?:'"));
3096 error (_("`operator []' must be specified "
3097 "without whitespace in `[]'"));
3101 error (_("`operator %s' not supported"), p
);
3110 /* If FILE is not already in the table of files, return zero;
3111 otherwise return non-zero. Optionally add FILE to the table if ADD
3112 is non-zero. If *FIRST is non-zero, forget the old table
3116 filename_seen (const char *file
, int add
, int *first
)
3118 /* Table of files seen so far. */
3119 static const char **tab
= NULL
;
3120 /* Allocated size of tab in elements.
3121 Start with one 256-byte block (when using GNU malloc.c).
3122 24 is the malloc overhead when range checking is in effect. */
3123 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3124 /* Current size of tab in elements. */
3125 static int tab_cur_size
;
3131 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3135 /* Is FILE in tab? */
3136 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3137 if (filename_cmp (*p
, file
) == 0)
3140 /* No; maybe add it to tab. */
3143 if (tab_cur_size
== tab_alloc_size
)
3145 tab_alloc_size
*= 2;
3146 tab
= (const char **) xrealloc ((char *) tab
,
3147 tab_alloc_size
* sizeof (*tab
));
3149 tab
[tab_cur_size
++] = file
;
3155 /* Slave routine for sources_info. Force line breaks at ,'s.
3156 NAME is the name to print and *FIRST is nonzero if this is the first
3157 name printed. Set *FIRST to zero. */
3160 output_source_filename (const char *name
, int *first
)
3162 /* Since a single source file can result in several partial symbol
3163 tables, we need to avoid printing it more than once. Note: if
3164 some of the psymtabs are read in and some are not, it gets
3165 printed both under "Source files for which symbols have been
3166 read" and "Source files for which symbols will be read in on
3167 demand". I consider this a reasonable way to deal with the
3168 situation. I'm not sure whether this can also happen for
3169 symtabs; it doesn't hurt to check. */
3171 /* Was NAME already seen? */
3172 if (filename_seen (name
, 1, first
))
3174 /* Yes; don't print it again. */
3177 /* No; print it and reset *FIRST. */
3184 printf_filtered (", ");
3188 fputs_filtered (name
, gdb_stdout
);
3191 /* A callback for map_partial_symbol_filenames. */
3194 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3197 output_source_filename (fullname
? fullname
: filename
, data
);
3201 sources_info (char *ignore
, int from_tty
)
3204 struct objfile
*objfile
;
3207 if (!have_full_symbols () && !have_partial_symbols ())
3209 error (_("No symbol table is loaded. Use the \"file\" command."));
3212 printf_filtered ("Source files for which symbols have been read in:\n\n");
3215 ALL_SYMTABS (objfile
, s
)
3217 const char *fullname
= symtab_to_fullname (s
);
3219 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
3221 printf_filtered ("\n\n");
3223 printf_filtered ("Source files for which symbols "
3224 "will be read in on demand:\n\n");
3227 map_partial_symbol_filenames (output_partial_symbol_filename
, &first
,
3228 1 /*need_fullname*/);
3229 printf_filtered ("\n");
3233 file_matches (const char *file
, char *files
[], int nfiles
)
3237 if (file
!= NULL
&& nfiles
!= 0)
3239 for (i
= 0; i
< nfiles
; i
++)
3241 if (filename_cmp (files
[i
], lbasename (file
)) == 0)
3245 else if (nfiles
== 0)
3250 /* Free any memory associated with a search. */
3253 free_search_symbols (struct symbol_search
*symbols
)
3255 struct symbol_search
*p
;
3256 struct symbol_search
*next
;
3258 for (p
= symbols
; p
!= NULL
; p
= next
)
3266 do_free_search_symbols_cleanup (void *symbols
)
3268 free_search_symbols (symbols
);
3272 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3274 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3277 /* Helper function for sort_search_symbols and qsort. Can only
3278 sort symbols, not minimal symbols. */
3281 compare_search_syms (const void *sa
, const void *sb
)
3283 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3284 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3286 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3287 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3290 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3291 prevtail where it is, but update its next pointer to point to
3292 the first of the sorted symbols. */
3294 static struct symbol_search
*
3295 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3297 struct symbol_search
**symbols
, *symp
, *old_next
;
3300 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3302 symp
= prevtail
->next
;
3303 for (i
= 0; i
< nfound
; i
++)
3308 /* Generally NULL. */
3311 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3312 compare_search_syms
);
3315 for (i
= 0; i
< nfound
; i
++)
3317 symp
->next
= symbols
[i
];
3320 symp
->next
= old_next
;
3326 /* An object of this type is passed as the user_data to the
3327 expand_symtabs_matching method. */
3328 struct search_symbols_data
3333 /* It is true if PREG contains valid data, false otherwise. */
3334 unsigned preg_p
: 1;
3338 /* A callback for expand_symtabs_matching. */
3341 search_symbols_file_matches (const char *filename
, void *user_data
)
3343 struct search_symbols_data
*data
= user_data
;
3345 return file_matches (filename
, data
->files
, data
->nfiles
);
3348 /* A callback for expand_symtabs_matching. */
3351 search_symbols_name_matches (const char *symname
, void *user_data
)
3353 struct search_symbols_data
*data
= user_data
;
3355 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3358 /* Search the symbol table for matches to the regular expression REGEXP,
3359 returning the results in *MATCHES.
3361 Only symbols of KIND are searched:
3362 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3363 and constants (enums)
3364 FUNCTIONS_DOMAIN - search all functions
3365 TYPES_DOMAIN - search all type names
3366 ALL_DOMAIN - an internal error for this function
3368 free_search_symbols should be called when *MATCHES is no longer needed.
3370 The results are sorted locally; each symtab's global and static blocks are
3371 separately alphabetized. */
3374 search_symbols (char *regexp
, enum search_domain kind
,
3375 int nfiles
, char *files
[],
3376 struct symbol_search
**matches
)
3379 struct blockvector
*bv
;
3382 struct block_iterator iter
;
3384 struct objfile
*objfile
;
3385 struct minimal_symbol
*msymbol
;
3387 static const enum minimal_symbol_type types
[]
3388 = {mst_data
, mst_text
, mst_abs
};
3389 static const enum minimal_symbol_type types2
[]
3390 = {mst_bss
, mst_file_text
, mst_abs
};
3391 static const enum minimal_symbol_type types3
[]
3392 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3393 static const enum minimal_symbol_type types4
[]
3394 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3395 enum minimal_symbol_type ourtype
;
3396 enum minimal_symbol_type ourtype2
;
3397 enum minimal_symbol_type ourtype3
;
3398 enum minimal_symbol_type ourtype4
;
3399 struct symbol_search
*sr
;
3400 struct symbol_search
*psr
;
3401 struct symbol_search
*tail
;
3402 struct search_symbols_data datum
;
3404 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3405 CLEANUP_CHAIN is freed only in the case of an error. */
3406 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3407 struct cleanup
*retval_chain
;
3409 gdb_assert (kind
<= TYPES_DOMAIN
);
3411 ourtype
= types
[kind
];
3412 ourtype2
= types2
[kind
];
3413 ourtype3
= types3
[kind
];
3414 ourtype4
= types4
[kind
];
3416 sr
= *matches
= NULL
;
3422 /* Make sure spacing is right for C++ operators.
3423 This is just a courtesy to make the matching less sensitive
3424 to how many spaces the user leaves between 'operator'
3425 and <TYPENAME> or <OPERATOR>. */
3427 char *opname
= operator_chars (regexp
, &opend
);
3432 int fix
= -1; /* -1 means ok; otherwise number of
3435 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3437 /* There should 1 space between 'operator' and 'TYPENAME'. */
3438 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3443 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3444 if (opname
[-1] == ' ')
3447 /* If wrong number of spaces, fix it. */
3450 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3452 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3457 errcode
= regcomp (&datum
.preg
, regexp
,
3458 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3462 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3464 make_cleanup (xfree
, err
);
3465 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3468 make_regfree_cleanup (&datum
.preg
);
3471 /* Search through the partial symtabs *first* for all symbols
3472 matching the regexp. That way we don't have to reproduce all of
3473 the machinery below. */
3475 datum
.nfiles
= nfiles
;
3476 datum
.files
= files
;
3477 ALL_OBJFILES (objfile
)
3480 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3483 : search_symbols_file_matches
),
3484 search_symbols_name_matches
,
3489 retval_chain
= old_chain
;
3491 /* Here, we search through the minimal symbol tables for functions
3492 and variables that match, and force their symbols to be read.
3493 This is in particular necessary for demangled variable names,
3494 which are no longer put into the partial symbol tables.
3495 The symbol will then be found during the scan of symtabs below.
3497 For functions, find_pc_symtab should succeed if we have debug info
3498 for the function, for variables we have to call
3499 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3501 If the lookup fails, set found_misc so that we will rescan to print
3502 any matching symbols without debug info.
3503 We only search the objfile the msymbol came from, we no longer search
3504 all objfiles. In large programs (1000s of shared libs) searching all
3505 objfiles is not worth the pain. */
3507 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3509 ALL_MSYMBOLS (objfile
, msymbol
)
3513 if (msymbol
->created_by_gdb
)
3516 if (MSYMBOL_TYPE (msymbol
) == ourtype
3517 || MSYMBOL_TYPE (msymbol
) == ourtype2
3518 || MSYMBOL_TYPE (msymbol
) == ourtype3
3519 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3522 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3525 /* Note: An important side-effect of these lookup functions
3526 is to expand the symbol table if msymbol is found, for the
3527 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3528 if (kind
== FUNCTIONS_DOMAIN
3529 ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
3530 : (lookup_symbol_in_objfile_from_linkage_name
3531 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3539 ALL_PRIMARY_SYMTABS (objfile
, s
)
3541 bv
= BLOCKVECTOR (s
);
3542 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3544 struct symbol_search
*prevtail
= tail
;
3547 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3548 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3550 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3554 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3556 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3558 && ((kind
== VARIABLES_DOMAIN
3559 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3560 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3561 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3562 /* LOC_CONST can be used for more than just enums,
3563 e.g., c++ static const members.
3564 We only want to skip enums here. */
3565 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3566 && TYPE_CODE (SYMBOL_TYPE (sym
))
3568 || (kind
== FUNCTIONS_DOMAIN
3569 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3570 || (kind
== TYPES_DOMAIN
3571 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3574 psr
= (struct symbol_search
*)
3575 xmalloc (sizeof (struct symbol_search
));
3577 psr
->symtab
= real_symtab
;
3579 psr
->msymbol
= NULL
;
3591 if (prevtail
== NULL
)
3593 struct symbol_search dummy
;
3596 tail
= sort_search_symbols (&dummy
, nfound
);
3599 make_cleanup_free_search_symbols (sr
);
3602 tail
= sort_search_symbols (prevtail
, nfound
);
3607 /* If there are no eyes, avoid all contact. I mean, if there are
3608 no debug symbols, then print directly from the msymbol_vector. */
3610 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3612 ALL_MSYMBOLS (objfile
, msymbol
)
3616 if (msymbol
->created_by_gdb
)
3619 if (MSYMBOL_TYPE (msymbol
) == ourtype
3620 || MSYMBOL_TYPE (msymbol
) == ourtype2
3621 || MSYMBOL_TYPE (msymbol
) == ourtype3
3622 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3625 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3628 /* For functions we can do a quick check of whether the
3629 symbol might be found via find_pc_symtab. */
3630 if (kind
!= FUNCTIONS_DOMAIN
3631 || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
)
3633 if (lookup_symbol_in_objfile_from_linkage_name
3634 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3638 psr
= (struct symbol_search
*)
3639 xmalloc (sizeof (struct symbol_search
));
3641 psr
->msymbol
= msymbol
;
3648 make_cleanup_free_search_symbols (sr
);
3660 discard_cleanups (retval_chain
);
3661 do_cleanups (old_chain
);
3665 /* Helper function for symtab_symbol_info, this function uses
3666 the data returned from search_symbols() to print information
3667 regarding the match to gdb_stdout. */
3670 print_symbol_info (enum search_domain kind
,
3671 struct symtab
*s
, struct symbol
*sym
,
3672 int block
, char *last
)
3674 if (last
== NULL
|| filename_cmp (last
, s
->filename
) != 0)
3676 fputs_filtered ("\nFile ", gdb_stdout
);
3677 fputs_filtered (s
->filename
, gdb_stdout
);
3678 fputs_filtered (":\n", gdb_stdout
);
3681 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3682 printf_filtered ("static ");
3684 /* Typedef that is not a C++ class. */
3685 if (kind
== TYPES_DOMAIN
3686 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3687 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3688 /* variable, func, or typedef-that-is-c++-class. */
3689 else if (kind
< TYPES_DOMAIN
3690 || (kind
== TYPES_DOMAIN
3691 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3693 type_print (SYMBOL_TYPE (sym
),
3694 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3695 ? "" : SYMBOL_PRINT_NAME (sym
)),
3698 printf_filtered (";\n");
3702 /* This help function for symtab_symbol_info() prints information
3703 for non-debugging symbols to gdb_stdout. */
3706 print_msymbol_info (struct minimal_symbol
*msymbol
)
3708 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3711 if (gdbarch_addr_bit (gdbarch
) <= 32)
3712 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3713 & (CORE_ADDR
) 0xffffffff,
3716 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3718 printf_filtered ("%s %s\n",
3719 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3722 /* This is the guts of the commands "info functions", "info types", and
3723 "info variables". It calls search_symbols to find all matches and then
3724 print_[m]symbol_info to print out some useful information about the
3728 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3730 static const char * const classnames
[] =
3731 {"variable", "function", "type"};
3732 struct symbol_search
*symbols
;
3733 struct symbol_search
*p
;
3734 struct cleanup
*old_chain
;
3735 char *last_filename
= NULL
;
3738 gdb_assert (kind
<= TYPES_DOMAIN
);
3740 /* Must make sure that if we're interrupted, symbols gets freed. */
3741 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3742 old_chain
= make_cleanup_free_search_symbols (symbols
);
3744 printf_filtered (regexp
3745 ? "All %ss matching regular expression \"%s\":\n"
3746 : "All defined %ss:\n",
3747 classnames
[kind
], regexp
);
3749 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3753 if (p
->msymbol
!= NULL
)
3757 printf_filtered ("\nNon-debugging symbols:\n");
3760 print_msymbol_info (p
->msymbol
);
3764 print_symbol_info (kind
,
3769 last_filename
= p
->symtab
->filename
;
3773 do_cleanups (old_chain
);
3777 variables_info (char *regexp
, int from_tty
)
3779 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3783 functions_info (char *regexp
, int from_tty
)
3785 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3790 types_info (char *regexp
, int from_tty
)
3792 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3795 /* Breakpoint all functions matching regular expression. */
3798 rbreak_command_wrapper (char *regexp
, int from_tty
)
3800 rbreak_command (regexp
, from_tty
);
3803 /* A cleanup function that calls end_rbreak_breakpoints. */
3806 do_end_rbreak_breakpoints (void *ignore
)
3808 end_rbreak_breakpoints ();
3812 rbreak_command (char *regexp
, int from_tty
)
3814 struct symbol_search
*ss
;
3815 struct symbol_search
*p
;
3816 struct cleanup
*old_chain
;
3817 char *string
= NULL
;
3819 char **files
= NULL
, *file_name
;
3824 char *colon
= strchr (regexp
, ':');
3826 if (colon
&& *(colon
+ 1) != ':')
3830 colon_index
= colon
- regexp
;
3831 file_name
= alloca (colon_index
+ 1);
3832 memcpy (file_name
, regexp
, colon_index
);
3833 file_name
[colon_index
--] = 0;
3834 while (isspace (file_name
[colon_index
]))
3835 file_name
[colon_index
--] = 0;
3839 while (isspace (*regexp
)) regexp
++;
3843 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3844 old_chain
= make_cleanup_free_search_symbols (ss
);
3845 make_cleanup (free_current_contents
, &string
);
3847 start_rbreak_breakpoints ();
3848 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3849 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3851 if (p
->msymbol
== NULL
)
3853 int newlen
= (strlen (p
->symtab
->filename
)
3854 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3859 string
= xrealloc (string
, newlen
);
3862 strcpy (string
, p
->symtab
->filename
);
3863 strcat (string
, ":'");
3864 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3865 strcat (string
, "'");
3866 break_command (string
, from_tty
);
3867 print_symbol_info (FUNCTIONS_DOMAIN
,
3871 p
->symtab
->filename
);
3875 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3879 string
= xrealloc (string
, newlen
);
3882 strcpy (string
, "'");
3883 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3884 strcat (string
, "'");
3886 break_command (string
, from_tty
);
3887 printf_filtered ("<function, no debug info> %s;\n",
3888 SYMBOL_PRINT_NAME (p
->msymbol
));
3892 do_cleanups (old_chain
);
3896 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3898 Either sym_text[sym_text_len] != '(' and then we search for any
3899 symbol starting with SYM_TEXT text.
3901 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3902 be terminated at that point. Partial symbol tables do not have parameters
3906 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3908 int (*ncmp
) (const char *, const char *, size_t);
3910 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3912 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
3915 if (sym_text
[sym_text_len
] == '(')
3917 /* User searches for `name(someth...'. Require NAME to be terminated.
3918 Normally psymtabs and gdbindex have no parameter types so '\0' will be
3919 present but accept even parameters presence. In this case this
3920 function is in fact strcmp_iw but whitespace skipping is not supported
3921 for tab completion. */
3923 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
3930 /* Free any memory associated with a completion list. */
3933 free_completion_list (VEC (char_ptr
) **list_ptr
)
3938 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
3940 VEC_free (char_ptr
, *list_ptr
);
3943 /* Callback for make_cleanup. */
3946 do_free_completion_list (void *list
)
3948 free_completion_list (list
);
3951 /* Helper routine for make_symbol_completion_list. */
3953 static VEC (char_ptr
) *return_val
;
3955 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3956 completion_list_add_name \
3957 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3959 /* Test to see if the symbol specified by SYMNAME (which is already
3960 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3961 characters. If so, add it to the current completion list. */
3964 completion_list_add_name (const char *symname
,
3965 const char *sym_text
, int sym_text_len
,
3966 const char *text
, const char *word
)
3970 /* Clip symbols that cannot match. */
3971 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
3974 /* We have a match for a completion, so add SYMNAME to the current list
3975 of matches. Note that the name is moved to freshly malloc'd space. */
3980 if (word
== sym_text
)
3982 new = xmalloc (strlen (symname
) + 5);
3983 strcpy (new, symname
);
3985 else if (word
> sym_text
)
3987 /* Return some portion of symname. */
3988 new = xmalloc (strlen (symname
) + 5);
3989 strcpy (new, symname
+ (word
- sym_text
));
3993 /* Return some of SYM_TEXT plus symname. */
3994 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3995 strncpy (new, word
, sym_text
- word
);
3996 new[sym_text
- word
] = '\0';
3997 strcat (new, symname
);
4000 VEC_safe_push (char_ptr
, return_val
, new);
4004 /* ObjC: In case we are completing on a selector, look as the msymbol
4005 again and feed all the selectors into the mill. */
4008 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4009 const char *sym_text
, int sym_text_len
,
4010 const char *text
, const char *word
)
4012 static char *tmp
= NULL
;
4013 static unsigned int tmplen
= 0;
4015 const char *method
, *category
, *selector
;
4018 method
= SYMBOL_NATURAL_NAME (msymbol
);
4020 /* Is it a method? */
4021 if ((method
[0] != '-') && (method
[0] != '+'))
4024 if (sym_text
[0] == '[')
4025 /* Complete on shortened method method. */
4026 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4028 while ((strlen (method
) + 1) >= tmplen
)
4034 tmp
= xrealloc (tmp
, tmplen
);
4036 selector
= strchr (method
, ' ');
4037 if (selector
!= NULL
)
4040 category
= strchr (method
, '(');
4042 if ((category
!= NULL
) && (selector
!= NULL
))
4044 memcpy (tmp
, method
, (category
- method
));
4045 tmp
[category
- method
] = ' ';
4046 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4047 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4048 if (sym_text
[0] == '[')
4049 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4052 if (selector
!= NULL
)
4054 /* Complete on selector only. */
4055 strcpy (tmp
, selector
);
4056 tmp2
= strchr (tmp
, ']');
4060 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4064 /* Break the non-quoted text based on the characters which are in
4065 symbols. FIXME: This should probably be language-specific. */
4068 language_search_unquoted_string (char *text
, char *p
)
4070 for (; p
> text
; --p
)
4072 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4076 if ((current_language
->la_language
== language_objc
))
4078 if (p
[-1] == ':') /* Might be part of a method name. */
4080 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4081 p
-= 2; /* Beginning of a method name. */
4082 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4083 { /* Might be part of a method name. */
4086 /* Seeing a ' ' or a '(' is not conclusive evidence
4087 that we are in the middle of a method name. However,
4088 finding "-[" or "+[" should be pretty un-ambiguous.
4089 Unfortunately we have to find it now to decide. */
4092 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4093 t
[-1] == ' ' || t
[-1] == ':' ||
4094 t
[-1] == '(' || t
[-1] == ')')
4099 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4100 p
= t
- 2; /* Method name detected. */
4101 /* Else we leave with p unchanged. */
4111 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
4112 int sym_text_len
, char *text
, char *word
)
4114 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4116 struct type
*t
= SYMBOL_TYPE (sym
);
4117 enum type_code c
= TYPE_CODE (t
);
4120 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4121 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4122 if (TYPE_FIELD_NAME (t
, j
))
4123 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4124 sym_text
, sym_text_len
, text
, word
);
4128 /* Type of the user_data argument passed to add_macro_name or
4129 expand_partial_symbol_name. The contents are simply whatever is
4130 needed by completion_list_add_name. */
4131 struct add_name_data
4139 /* A callback used with macro_for_each and macro_for_each_in_scope.
4140 This adds a macro's name to the current completion list. */
4143 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4144 struct macro_source_file
*ignore2
, int ignore3
,
4147 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4149 completion_list_add_name ((char *) name
,
4150 datum
->sym_text
, datum
->sym_text_len
,
4151 datum
->text
, datum
->word
);
4154 /* A callback for expand_partial_symbol_names. */
4157 expand_partial_symbol_name (const char *name
, void *user_data
)
4159 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4161 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4165 default_make_symbol_completion_list_break_on (char *text
, char *word
,
4166 const char *break_on
)
4168 /* Problem: All of the symbols have to be copied because readline
4169 frees them. I'm not going to worry about this; hopefully there
4170 won't be that many. */
4174 struct minimal_symbol
*msymbol
;
4175 struct objfile
*objfile
;
4177 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4178 struct block_iterator iter
;
4179 /* The symbol we are completing on. Points in same buffer as text. */
4181 /* Length of sym_text. */
4183 struct add_name_data datum
;
4184 struct cleanup
*back_to
;
4186 /* Now look for the symbol we are supposed to complete on. */
4190 char *quote_pos
= NULL
;
4192 /* First see if this is a quoted string. */
4194 for (p
= text
; *p
!= '\0'; ++p
)
4196 if (quote_found
!= '\0')
4198 if (*p
== quote_found
)
4199 /* Found close quote. */
4201 else if (*p
== '\\' && p
[1] == quote_found
)
4202 /* A backslash followed by the quote character
4203 doesn't end the string. */
4206 else if (*p
== '\'' || *p
== '"')
4212 if (quote_found
== '\'')
4213 /* A string within single quotes can be a symbol, so complete on it. */
4214 sym_text
= quote_pos
+ 1;
4215 else if (quote_found
== '"')
4216 /* A double-quoted string is never a symbol, nor does it make sense
4217 to complete it any other way. */
4223 /* It is not a quoted string. Break it based on the characters
4224 which are in symbols. */
4227 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4228 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4237 sym_text_len
= strlen (sym_text
);
4239 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4241 if (current_language
->la_language
== language_cplus
4242 || current_language
->la_language
== language_java
4243 || current_language
->la_language
== language_fortran
)
4245 /* These languages may have parameters entered by user but they are never
4246 present in the partial symbol tables. */
4248 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4251 sym_text_len
= cs
- sym_text
;
4253 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4256 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4258 datum
.sym_text
= sym_text
;
4259 datum
.sym_text_len
= sym_text_len
;
4263 /* Look through the partial symtabs for all symbols which begin
4264 by matching SYM_TEXT. Expand all CUs that you find to the list.
4265 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4266 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4268 /* At this point scan through the misc symbol vectors and add each
4269 symbol you find to the list. Eventually we want to ignore
4270 anything that isn't a text symbol (everything else will be
4271 handled by the psymtab code above). */
4273 ALL_MSYMBOLS (objfile
, msymbol
)
4276 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4278 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
4281 /* Search upwards from currently selected frame (so that we can
4282 complete on local vars). Also catch fields of types defined in
4283 this places which match our text string. Only complete on types
4284 visible from current context. */
4286 b
= get_selected_block (0);
4287 surrounding_static_block
= block_static_block (b
);
4288 surrounding_global_block
= block_global_block (b
);
4289 if (surrounding_static_block
!= NULL
)
4290 while (b
!= surrounding_static_block
)
4294 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4296 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4298 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4302 /* Stop when we encounter an enclosing function. Do not stop for
4303 non-inlined functions - the locals of the enclosing function
4304 are in scope for a nested function. */
4305 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4307 b
= BLOCK_SUPERBLOCK (b
);
4310 /* Add fields from the file's types; symbols will be added below. */
4312 if (surrounding_static_block
!= NULL
)
4313 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4314 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4316 if (surrounding_global_block
!= NULL
)
4317 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4318 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4320 /* Go through the symtabs and check the externs and statics for
4321 symbols which match. */
4323 ALL_PRIMARY_SYMTABS (objfile
, s
)
4326 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4327 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4329 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4333 ALL_PRIMARY_SYMTABS (objfile
, s
)
4336 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4337 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4339 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4343 if (current_language
->la_macro_expansion
== macro_expansion_c
)
4345 struct macro_scope
*scope
;
4347 /* Add any macros visible in the default scope. Note that this
4348 may yield the occasional wrong result, because an expression
4349 might be evaluated in a scope other than the default. For
4350 example, if the user types "break file:line if <TAB>", the
4351 resulting expression will be evaluated at "file:line" -- but
4352 at there does not seem to be a way to detect this at
4354 scope
= default_macro_scope ();
4357 macro_for_each_in_scope (scope
->file
, scope
->line
,
4358 add_macro_name
, &datum
);
4362 /* User-defined macros are always visible. */
4363 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4366 discard_cleanups (back_to
);
4367 return (return_val
);
4371 default_make_symbol_completion_list (char *text
, char *word
)
4373 return default_make_symbol_completion_list_break_on (text
, word
, "");
4376 /* Return a vector of all symbols (regardless of class) which begin by
4377 matching TEXT. If the answer is no symbols, then the return value
4381 make_symbol_completion_list (char *text
, char *word
)
4383 return current_language
->la_make_symbol_completion_list (text
, word
);
4386 /* Like make_symbol_completion_list, but suitable for use as a
4387 completion function. */
4390 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4391 char *text
, char *word
)
4393 return make_symbol_completion_list (text
, word
);
4396 /* Like make_symbol_completion_list, but returns a list of symbols
4397 defined in a source file FILE. */
4400 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
4405 struct block_iterator iter
;
4406 /* The symbol we are completing on. Points in same buffer as text. */
4408 /* Length of sym_text. */
4411 /* Now look for the symbol we are supposed to complete on.
4412 FIXME: This should be language-specific. */
4416 char *quote_pos
= NULL
;
4418 /* First see if this is a quoted string. */
4420 for (p
= text
; *p
!= '\0'; ++p
)
4422 if (quote_found
!= '\0')
4424 if (*p
== quote_found
)
4425 /* Found close quote. */
4427 else if (*p
== '\\' && p
[1] == quote_found
)
4428 /* A backslash followed by the quote character
4429 doesn't end the string. */
4432 else if (*p
== '\'' || *p
== '"')
4438 if (quote_found
== '\'')
4439 /* A string within single quotes can be a symbol, so complete on it. */
4440 sym_text
= quote_pos
+ 1;
4441 else if (quote_found
== '"')
4442 /* A double-quoted string is never a symbol, nor does it make sense
4443 to complete it any other way. */
4449 /* Not a quoted string. */
4450 sym_text
= language_search_unquoted_string (text
, p
);
4454 sym_text_len
= strlen (sym_text
);
4458 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4460 s
= lookup_symtab (srcfile
);
4463 /* Maybe they typed the file with leading directories, while the
4464 symbol tables record only its basename. */
4465 const char *tail
= lbasename (srcfile
);
4468 s
= lookup_symtab (tail
);
4471 /* If we have no symtab for that file, return an empty list. */
4473 return (return_val
);
4475 /* Go through this symtab and check the externs and statics for
4476 symbols which match. */
4478 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4479 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4481 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4484 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4485 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4487 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4490 return (return_val
);
4493 /* A helper function for make_source_files_completion_list. It adds
4494 another file name to a list of possible completions, growing the
4495 list as necessary. */
4498 add_filename_to_list (const char *fname
, char *text
, char *word
,
4499 VEC (char_ptr
) **list
)
4502 size_t fnlen
= strlen (fname
);
4506 /* Return exactly fname. */
4507 new = xmalloc (fnlen
+ 5);
4508 strcpy (new, fname
);
4510 else if (word
> text
)
4512 /* Return some portion of fname. */
4513 new = xmalloc (fnlen
+ 5);
4514 strcpy (new, fname
+ (word
- text
));
4518 /* Return some of TEXT plus fname. */
4519 new = xmalloc (fnlen
+ (text
- word
) + 5);
4520 strncpy (new, word
, text
- word
);
4521 new[text
- word
] = '\0';
4522 strcat (new, fname
);
4524 VEC_safe_push (char_ptr
, *list
, new);
4528 not_interesting_fname (const char *fname
)
4530 static const char *illegal_aliens
[] = {
4531 "_globals_", /* inserted by coff_symtab_read */
4536 for (i
= 0; illegal_aliens
[i
]; i
++)
4538 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4544 /* An object of this type is passed as the user_data argument to
4545 map_partial_symbol_filenames. */
4546 struct add_partial_filename_data
4552 VEC (char_ptr
) **list
;
4555 /* A callback for map_partial_symbol_filenames. */
4558 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4561 struct add_partial_filename_data
*data
= user_data
;
4563 if (not_interesting_fname (filename
))
4565 if (!filename_seen (filename
, 1, data
->first
)
4566 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4568 /* This file matches for a completion; add it to the
4569 current list of matches. */
4570 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4574 const char *base_name
= lbasename (filename
);
4576 if (base_name
!= filename
4577 && !filename_seen (base_name
, 1, data
->first
)
4578 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4579 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4583 /* Return a vector of all source files whose names begin with matching
4584 TEXT. The file names are looked up in the symbol tables of this
4585 program. If the answer is no matchess, then the return value is
4589 make_source_files_completion_list (char *text
, char *word
)
4592 struct objfile
*objfile
;
4594 size_t text_len
= strlen (text
);
4595 VEC (char_ptr
) *list
= NULL
;
4596 const char *base_name
;
4597 struct add_partial_filename_data datum
;
4598 struct cleanup
*back_to
;
4600 if (!have_full_symbols () && !have_partial_symbols ())
4603 back_to
= make_cleanup (do_free_completion_list
, &list
);
4605 ALL_SYMTABS (objfile
, s
)
4607 if (not_interesting_fname (s
->filename
))
4609 if (!filename_seen (s
->filename
, 1, &first
)
4610 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4612 /* This file matches for a completion; add it to the current
4614 add_filename_to_list (s
->filename
, text
, word
, &list
);
4618 /* NOTE: We allow the user to type a base name when the
4619 debug info records leading directories, but not the other
4620 way around. This is what subroutines of breakpoint
4621 command do when they parse file names. */
4622 base_name
= lbasename (s
->filename
);
4623 if (base_name
!= s
->filename
4624 && !filename_seen (base_name
, 1, &first
)
4625 && filename_ncmp (base_name
, text
, text_len
) == 0)
4626 add_filename_to_list (base_name
, text
, word
, &list
);
4630 datum
.first
= &first
;
4633 datum
.text_len
= text_len
;
4635 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4636 0 /*need_fullname*/);
4637 discard_cleanups (back_to
);
4642 /* Determine if PC is in the prologue of a function. The prologue is the area
4643 between the first instruction of a function, and the first executable line.
4644 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4646 If non-zero, func_start is where we think the prologue starts, possibly
4647 by previous examination of symbol table information. */
4650 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4652 struct symtab_and_line sal
;
4653 CORE_ADDR func_addr
, func_end
;
4655 /* We have several sources of information we can consult to figure
4657 - Compilers usually emit line number info that marks the prologue
4658 as its own "source line". So the ending address of that "line"
4659 is the end of the prologue. If available, this is the most
4661 - The minimal symbols and partial symbols, which can usually tell
4662 us the starting and ending addresses of a function.
4663 - If we know the function's start address, we can call the
4664 architecture-defined gdbarch_skip_prologue function to analyze the
4665 instruction stream and guess where the prologue ends.
4666 - Our `func_start' argument; if non-zero, this is the caller's
4667 best guess as to the function's entry point. At the time of
4668 this writing, handle_inferior_event doesn't get this right, so
4669 it should be our last resort. */
4671 /* Consult the partial symbol table, to find which function
4673 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4675 CORE_ADDR prologue_end
;
4677 /* We don't even have minsym information, so fall back to using
4678 func_start, if given. */
4680 return 1; /* We *might* be in a prologue. */
4682 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4684 return func_start
<= pc
&& pc
< prologue_end
;
4687 /* If we have line number information for the function, that's
4688 usually pretty reliable. */
4689 sal
= find_pc_line (func_addr
, 0);
4691 /* Now sal describes the source line at the function's entry point,
4692 which (by convention) is the prologue. The end of that "line",
4693 sal.end, is the end of the prologue.
4695 Note that, for functions whose source code is all on a single
4696 line, the line number information doesn't always end up this way.
4697 So we must verify that our purported end-of-prologue address is
4698 *within* the function, not at its start or end. */
4700 || sal
.end
<= func_addr
4701 || func_end
<= sal
.end
)
4703 /* We don't have any good line number info, so use the minsym
4704 information, together with the architecture-specific prologue
4706 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4708 return func_addr
<= pc
&& pc
< prologue_end
;
4711 /* We have line number info, and it looks good. */
4712 return func_addr
<= pc
&& pc
< sal
.end
;
4715 /* Given PC at the function's start address, attempt to find the
4716 prologue end using SAL information. Return zero if the skip fails.
4718 A non-optimized prologue traditionally has one SAL for the function
4719 and a second for the function body. A single line function has
4720 them both pointing at the same line.
4722 An optimized prologue is similar but the prologue may contain
4723 instructions (SALs) from the instruction body. Need to skip those
4724 while not getting into the function body.
4726 The functions end point and an increasing SAL line are used as
4727 indicators of the prologue's endpoint.
4729 This code is based on the function refine_prologue_limit
4733 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4735 struct symtab_and_line prologue_sal
;
4740 /* Get an initial range for the function. */
4741 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4742 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4744 prologue_sal
= find_pc_line (start_pc
, 0);
4745 if (prologue_sal
.line
!= 0)
4747 /* For languages other than assembly, treat two consecutive line
4748 entries at the same address as a zero-instruction prologue.
4749 The GNU assembler emits separate line notes for each instruction
4750 in a multi-instruction macro, but compilers generally will not
4752 if (prologue_sal
.symtab
->language
!= language_asm
)
4754 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4757 /* Skip any earlier lines, and any end-of-sequence marker
4758 from a previous function. */
4759 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4760 || linetable
->item
[idx
].line
== 0)
4763 if (idx
+1 < linetable
->nitems
4764 && linetable
->item
[idx
+1].line
!= 0
4765 && linetable
->item
[idx
+1].pc
== start_pc
)
4769 /* If there is only one sal that covers the entire function,
4770 then it is probably a single line function, like
4772 if (prologue_sal
.end
>= end_pc
)
4775 while (prologue_sal
.end
< end_pc
)
4777 struct symtab_and_line sal
;
4779 sal
= find_pc_line (prologue_sal
.end
, 0);
4782 /* Assume that a consecutive SAL for the same (or larger)
4783 line mark the prologue -> body transition. */
4784 if (sal
.line
>= prologue_sal
.line
)
4787 /* The line number is smaller. Check that it's from the
4788 same function, not something inlined. If it's inlined,
4789 then there is no point comparing the line numbers. */
4790 bl
= block_for_pc (prologue_sal
.end
);
4793 if (block_inlined_p (bl
))
4795 if (BLOCK_FUNCTION (bl
))
4800 bl
= BLOCK_SUPERBLOCK (bl
);
4805 /* The case in which compiler's optimizer/scheduler has
4806 moved instructions into the prologue. We look ahead in
4807 the function looking for address ranges whose
4808 corresponding line number is less the first one that we
4809 found for the function. This is more conservative then
4810 refine_prologue_limit which scans a large number of SALs
4811 looking for any in the prologue. */
4816 if (prologue_sal
.end
< end_pc
)
4817 /* Return the end of this line, or zero if we could not find a
4819 return prologue_sal
.end
;
4821 /* Don't return END_PC, which is past the end of the function. */
4822 return prologue_sal
.pc
;
4825 struct symtabs_and_lines
4826 decode_line_spec (char *string
, int flags
)
4828 struct symtabs_and_lines sals
;
4829 struct symtab_and_line cursal
;
4832 error (_("Empty line specification."));
4834 /* We use whatever is set as the current source line. We do not try
4835 and get a default or it will recursively call us! */
4836 cursal
= get_current_source_symtab_and_line ();
4838 sals
= decode_line_1 (&string
, flags
,
4839 cursal
.symtab
, cursal
.line
);
4842 error (_("Junk at end of line specification: %s"), string
);
4847 static char *name_of_main
;
4848 enum language language_of_main
= language_unknown
;
4851 set_main_name (const char *name
)
4853 if (name_of_main
!= NULL
)
4855 xfree (name_of_main
);
4856 name_of_main
= NULL
;
4857 language_of_main
= language_unknown
;
4861 name_of_main
= xstrdup (name
);
4862 language_of_main
= language_unknown
;
4866 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4870 find_main_name (void)
4872 const char *new_main_name
;
4874 /* Try to see if the main procedure is in Ada. */
4875 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4876 be to add a new method in the language vector, and call this
4877 method for each language until one of them returns a non-empty
4878 name. This would allow us to remove this hard-coded call to
4879 an Ada function. It is not clear that this is a better approach
4880 at this point, because all methods need to be written in a way
4881 such that false positives never be returned. For instance, it is
4882 important that a method does not return a wrong name for the main
4883 procedure if the main procedure is actually written in a different
4884 language. It is easy to guaranty this with Ada, since we use a
4885 special symbol generated only when the main in Ada to find the name
4886 of the main procedure. It is difficult however to see how this can
4887 be guarantied for languages such as C, for instance. This suggests
4888 that order of call for these methods becomes important, which means
4889 a more complicated approach. */
4890 new_main_name
= ada_main_name ();
4891 if (new_main_name
!= NULL
)
4893 set_main_name (new_main_name
);
4897 new_main_name
= go_main_name ();
4898 if (new_main_name
!= NULL
)
4900 set_main_name (new_main_name
);
4904 new_main_name
= pascal_main_name ();
4905 if (new_main_name
!= NULL
)
4907 set_main_name (new_main_name
);
4911 /* The languages above didn't identify the name of the main procedure.
4912 Fallback to "main". */
4913 set_main_name ("main");
4919 if (name_of_main
== NULL
)
4922 return name_of_main
;
4925 /* Handle ``executable_changed'' events for the symtab module. */
4928 symtab_observer_executable_changed (void)
4930 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4931 set_main_name (NULL
);
4934 /* Return 1 if the supplied producer string matches the ARM RealView
4935 compiler (armcc). */
4938 producer_is_realview (const char *producer
)
4940 static const char *const arm_idents
[] = {
4941 "ARM C Compiler, ADS",
4942 "Thumb C Compiler, ADS",
4943 "ARM C++ Compiler, ADS",
4944 "Thumb C++ Compiler, ADS",
4945 "ARM/Thumb C/C++ Compiler, RVCT",
4946 "ARM C/C++ Compiler, RVCT"
4950 if (producer
== NULL
)
4953 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
4954 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
4961 _initialize_symtab (void)
4963 add_info ("variables", variables_info
, _("\
4964 All global and static variable names, or those matching REGEXP."));
4966 add_com ("whereis", class_info
, variables_info
, _("\
4967 All global and static variable names, or those matching REGEXP."));
4969 add_info ("functions", functions_info
,
4970 _("All function names, or those matching REGEXP."));
4972 /* FIXME: This command has at least the following problems:
4973 1. It prints builtin types (in a very strange and confusing fashion).
4974 2. It doesn't print right, e.g. with
4975 typedef struct foo *FOO
4976 type_print prints "FOO" when we want to make it (in this situation)
4977 print "struct foo *".
4978 I also think "ptype" or "whatis" is more likely to be useful (but if
4979 there is much disagreement "info types" can be fixed). */
4980 add_info ("types", types_info
,
4981 _("All type names, or those matching REGEXP."));
4983 add_info ("sources", sources_info
,
4984 _("Source files in the program."));
4986 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4987 _("Set a breakpoint for all functions matching REGEXP."));
4991 add_com ("lf", class_info
, sources_info
,
4992 _("Source files in the program"));
4993 add_com ("lg", class_info
, variables_info
, _("\
4994 All global and static variable names, or those matching REGEXP."));
4997 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4998 multiple_symbols_modes
, &multiple_symbols_mode
,
5000 Set the debugger behavior when more than one symbol are possible matches\n\
5001 in an expression."), _("\
5002 Show how the debugger handles ambiguities in expressions."), _("\
5003 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5004 NULL
, NULL
, &setlist
, &showlist
);
5006 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5007 &basenames_may_differ
, _("\
5008 Set whether a source file may have multiple base names."), _("\
5009 Show whether a source file may have multiple base names."), _("\
5010 (A \"base name\" is the name of a file with the directory part removed.\n\
5011 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5012 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5013 before comparing them. Canonicalization is an expensive operation,\n\
5014 but it allows the same file be known by more than one base name.\n\
5015 If not set (the default), all source files are assumed to have just\n\
5016 one base name, and gdb will do file name comparisons more efficiently."),
5018 &setlist
, &showlist
);
5020 add_setshow_boolean_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5021 _("Set debugging of symbol table creation."),
5022 _("Show debugging of symbol table creation."), _("\
5023 When enabled, debugging messages are printed when building symbol tables."),
5026 &setdebuglist
, &showdebuglist
);
5028 observer_attach_executable_changed (symtab_observer_executable_changed
);