1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2013 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 "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
57 #include "cp-support.h"
59 #include "gdb_assert.h"
62 #include "macroscope.h"
65 #include "parser-defs.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 int find_line_common (struct linetable
*, int, int *, int);
81 static struct symbol
*lookup_symbol_aux (const char *name
,
82 const struct block
*block
,
83 const domain_enum domain
,
84 enum language language
,
85 struct field_of_this_result
*is_a_field_of_this
);
88 struct symbol
*lookup_symbol_aux_local (const char *name
,
89 const struct block
*block
,
90 const domain_enum domain
,
91 enum language language
);
94 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
96 const domain_enum domain
);
99 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
102 const domain_enum domain
);
104 static void print_msymbol_info (struct minimal_symbol
*);
106 void _initialize_symtab (void);
110 /* When non-zero, print debugging messages related to symtab creation. */
111 int symtab_create_debug
= 0;
113 /* Non-zero if a file may be known by two different basenames.
114 This is the uncommon case, and significantly slows down gdb.
115 Default set to "off" to not slow down the common case. */
116 int basenames_may_differ
= 0;
118 /* Allow the user to configure the debugger behavior with respect
119 to multiple-choice menus when more than one symbol matches during
122 const char multiple_symbols_ask
[] = "ask";
123 const char multiple_symbols_all
[] = "all";
124 const char multiple_symbols_cancel
[] = "cancel";
125 static const char *const multiple_symbols_modes
[] =
127 multiple_symbols_ask
,
128 multiple_symbols_all
,
129 multiple_symbols_cancel
,
132 static const char *multiple_symbols_mode
= multiple_symbols_all
;
134 /* Read-only accessor to AUTO_SELECT_MODE. */
137 multiple_symbols_select_mode (void)
139 return multiple_symbols_mode
;
142 /* Block in which the most recently searched-for symbol was found.
143 Might be better to make this a parameter to lookup_symbol and
146 const struct block
*block_found
;
148 /* See whether FILENAME matches SEARCH_NAME using the rule that we
149 advertise to the user. (The manual's description of linespecs
150 describes what we advertise). Returns true if they match, false
154 compare_filenames_for_search (const char *filename
, const char *search_name
)
156 int len
= strlen (filename
);
157 size_t search_len
= strlen (search_name
);
159 if (len
< search_len
)
162 /* The tail of FILENAME must match. */
163 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
166 /* Either the names must completely match, or the character
167 preceding the trailing SEARCH_NAME segment of FILENAME must be a
170 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
171 cannot match FILENAME "/path//dir/file.c" - as user has requested
172 absolute path. The sama applies for "c:\file.c" possibly
173 incorrectly hypothetically matching "d:\dir\c:\file.c".
175 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
176 compatible with SEARCH_NAME "file.c". In such case a compiler had
177 to put the "c:file.c" name into debug info. Such compatibility
178 works only on GDB built for DOS host. */
179 return (len
== search_len
180 || (!IS_ABSOLUTE_PATH (search_name
)
181 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
182 || (HAS_DRIVE_SPEC (filename
)
183 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
186 /* Check for a symtab of a specific name by searching some symtabs.
187 This is a helper function for callbacks of iterate_over_symtabs.
189 The return value, NAME, REAL_PATH, CALLBACK, and DATA
190 are identical to the `map_symtabs_matching_filename' method of
191 quick_symbol_functions.
193 FIRST and AFTER_LAST indicate the range of symtabs to search.
194 AFTER_LAST is one past the last symtab to search; NULL means to
195 search until the end of the list. */
198 iterate_over_some_symtabs (const char *name
,
199 const char *real_path
,
200 int (*callback
) (struct symtab
*symtab
,
203 struct symtab
*first
,
204 struct symtab
*after_last
)
206 struct symtab
*s
= NULL
;
207 const char* base_name
= lbasename (name
);
209 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
211 if (compare_filenames_for_search (s
->filename
, name
))
213 if (callback (s
, data
))
218 /* Before we invoke realpath, which can get expensive when many
219 files are involved, do a quick comparison of the basenames. */
220 if (! basenames_may_differ
221 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
224 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
226 if (callback (s
, data
))
231 /* If the user gave us an absolute path, try to find the file in
232 this symtab and use its absolute path. */
234 if (real_path
!= NULL
)
236 const char *fullname
= symtab_to_fullname (s
);
238 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
239 gdb_assert (IS_ABSOLUTE_PATH (name
));
240 if (FILENAME_CMP (real_path
, fullname
) == 0)
242 if (callback (s
, data
))
252 /* Check for a symtab of a specific name; first in symtabs, then in
253 psymtabs. *If* there is no '/' in the name, a match after a '/'
254 in the symtab filename will also work.
256 Calls CALLBACK with each symtab that is found and with the supplied
257 DATA. If CALLBACK returns true, the search stops. */
260 iterate_over_symtabs (const char *name
,
261 int (*callback
) (struct symtab
*symtab
,
265 struct objfile
*objfile
;
266 char *real_path
= NULL
;
267 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
269 /* Here we are interested in canonicalizing an absolute path, not
270 absolutizing a relative path. */
271 if (IS_ABSOLUTE_PATH (name
))
273 real_path
= gdb_realpath (name
);
274 make_cleanup (xfree
, real_path
);
275 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
278 ALL_OBJFILES (objfile
)
280 if (iterate_over_some_symtabs (name
, real_path
, callback
, data
,
281 objfile
->symtabs
, NULL
))
283 do_cleanups (cleanups
);
288 /* Same search rules as above apply here, but now we look thru the
291 ALL_OBJFILES (objfile
)
294 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
300 do_cleanups (cleanups
);
305 do_cleanups (cleanups
);
308 /* The callback function used by lookup_symtab. */
311 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
313 struct symtab
**result_ptr
= data
;
315 *result_ptr
= symtab
;
319 /* A wrapper for iterate_over_symtabs that returns the first matching
323 lookup_symtab (const char *name
)
325 struct symtab
*result
= NULL
;
327 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
332 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
333 full method name, which consist of the class name (from T), the unadorned
334 method name from METHOD_ID, and the signature for the specific overload,
335 specified by SIGNATURE_ID. Note that this function is g++ specific. */
338 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
340 int mangled_name_len
;
342 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
343 struct fn_field
*method
= &f
[signature_id
];
344 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
345 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
346 const char *newname
= type_name_no_tag (type
);
348 /* Does the form of physname indicate that it is the full mangled name
349 of a constructor (not just the args)? */
350 int is_full_physname_constructor
;
353 int is_destructor
= is_destructor_name (physname
);
354 /* Need a new type prefix. */
355 char *const_prefix
= method
->is_const
? "C" : "";
356 char *volatile_prefix
= method
->is_volatile
? "V" : "";
358 int len
= (newname
== NULL
? 0 : strlen (newname
));
360 /* Nothing to do if physname already contains a fully mangled v3 abi name
361 or an operator name. */
362 if ((physname
[0] == '_' && physname
[1] == 'Z')
363 || is_operator_name (field_name
))
364 return xstrdup (physname
);
366 is_full_physname_constructor
= is_constructor_name (physname
);
368 is_constructor
= is_full_physname_constructor
369 || (newname
&& strcmp (field_name
, newname
) == 0);
372 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
374 if (is_destructor
|| is_full_physname_constructor
)
376 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
377 strcpy (mangled_name
, physname
);
383 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
385 else if (physname
[0] == 't' || physname
[0] == 'Q')
387 /* The physname for template and qualified methods already includes
389 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
395 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
396 volatile_prefix
, len
);
398 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
399 + strlen (buf
) + len
+ strlen (physname
) + 1);
401 mangled_name
= (char *) xmalloc (mangled_name_len
);
403 mangled_name
[0] = '\0';
405 strcpy (mangled_name
, field_name
);
407 strcat (mangled_name
, buf
);
408 /* If the class doesn't have a name, i.e. newname NULL, then we just
409 mangle it using 0 for the length of the class. Thus it gets mangled
410 as something starting with `::' rather than `classname::'. */
412 strcat (mangled_name
, newname
);
414 strcat (mangled_name
, physname
);
415 return (mangled_name
);
418 /* Initialize the cplus_specific structure. 'cplus_specific' should
419 only be allocated for use with cplus symbols. */
422 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
423 struct obstack
*obstack
)
425 /* A language_specific structure should not have been previously
427 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
428 gdb_assert (obstack
!= NULL
);
430 gsymbol
->language_specific
.cplus_specific
=
431 OBSTACK_ZALLOC (obstack
, struct cplus_specific
);
434 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
435 correctly allocated. For C++ symbols a cplus_specific struct is
436 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
437 OBJFILE can be NULL. */
440 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
442 struct obstack
*obstack
)
444 if (gsymbol
->language
== language_cplus
)
446 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
447 symbol_init_cplus_specific (gsymbol
, obstack
);
449 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
451 else if (gsymbol
->language
== language_ada
)
455 gsymbol
->ada_mangled
= 0;
456 gsymbol
->language_specific
.obstack
= obstack
;
460 gsymbol
->ada_mangled
= 1;
461 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
465 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
468 /* Return the demangled name of GSYMBOL. */
471 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
473 if (gsymbol
->language
== language_cplus
)
475 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
476 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
480 else if (gsymbol
->language
== language_ada
)
482 if (!gsymbol
->ada_mangled
)
487 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
491 /* Initialize the language dependent portion of a symbol
492 depending upon the language for the symbol. */
495 symbol_set_language (struct general_symbol_info
*gsymbol
,
496 enum language language
,
497 struct obstack
*obstack
)
499 gsymbol
->language
= language
;
500 if (gsymbol
->language
== language_d
501 || gsymbol
->language
== language_go
502 || gsymbol
->language
== language_java
503 || gsymbol
->language
== language_objc
504 || gsymbol
->language
== language_fortran
)
506 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
508 else if (gsymbol
->language
== language_ada
)
510 gdb_assert (gsymbol
->ada_mangled
== 0);
511 gsymbol
->language_specific
.obstack
= obstack
;
513 else if (gsymbol
->language
== language_cplus
)
514 gsymbol
->language_specific
.cplus_specific
= NULL
;
517 memset (&gsymbol
->language_specific
, 0,
518 sizeof (gsymbol
->language_specific
));
522 /* Functions to initialize a symbol's mangled name. */
524 /* Objects of this type are stored in the demangled name hash table. */
525 struct demangled_name_entry
531 /* Hash function for the demangled name hash. */
534 hash_demangled_name_entry (const void *data
)
536 const struct demangled_name_entry
*e
= data
;
538 return htab_hash_string (e
->mangled
);
541 /* Equality function for the demangled name hash. */
544 eq_demangled_name_entry (const void *a
, const void *b
)
546 const struct demangled_name_entry
*da
= a
;
547 const struct demangled_name_entry
*db
= b
;
549 return strcmp (da
->mangled
, db
->mangled
) == 0;
552 /* Create the hash table used for demangled names. Each hash entry is
553 a pair of strings; one for the mangled name and one for the demangled
554 name. The entry is hashed via just the mangled name. */
557 create_demangled_names_hash (struct objfile
*objfile
)
559 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
560 The hash table code will round this up to the next prime number.
561 Choosing a much larger table size wastes memory, and saves only about
562 1% in symbol reading. */
564 objfile
->demangled_names_hash
= htab_create_alloc
565 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
566 NULL
, xcalloc
, xfree
);
569 /* Try to determine the demangled name for a symbol, based on the
570 language of that symbol. If the language is set to language_auto,
571 it will attempt to find any demangling algorithm that works and
572 then set the language appropriately. The returned name is allocated
573 by the demangler and should be xfree'd. */
576 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
579 char *demangled
= NULL
;
581 if (gsymbol
->language
== language_unknown
)
582 gsymbol
->language
= language_auto
;
584 if (gsymbol
->language
== language_objc
585 || gsymbol
->language
== language_auto
)
588 objc_demangle (mangled
, 0);
589 if (demangled
!= NULL
)
591 gsymbol
->language
= language_objc
;
595 if (gsymbol
->language
== language_cplus
596 || gsymbol
->language
== language_auto
)
599 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
600 if (demangled
!= NULL
)
602 gsymbol
->language
= language_cplus
;
606 if (gsymbol
->language
== language_java
)
609 cplus_demangle (mangled
,
610 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
611 if (demangled
!= NULL
)
613 gsymbol
->language
= language_java
;
617 if (gsymbol
->language
== language_d
618 || gsymbol
->language
== language_auto
)
620 demangled
= d_demangle(mangled
, 0);
621 if (demangled
!= NULL
)
623 gsymbol
->language
= language_d
;
627 /* FIXME(dje): Continually adding languages here is clumsy.
628 Better to just call la_demangle if !auto, and if auto then call
629 a utility routine that tries successive languages in turn and reports
630 which one it finds. I realize the la_demangle options may be different
631 for different languages but there's already a FIXME for that. */
632 if (gsymbol
->language
== language_go
633 || gsymbol
->language
== language_auto
)
635 demangled
= go_demangle (mangled
, 0);
636 if (demangled
!= NULL
)
638 gsymbol
->language
= language_go
;
643 /* We could support `gsymbol->language == language_fortran' here to provide
644 module namespaces also for inferiors with only minimal symbol table (ELF
645 symbols). Just the mangling standard is not standardized across compilers
646 and there is no DW_AT_producer available for inferiors with only the ELF
647 symbols to check the mangling kind. */
651 /* Set both the mangled and demangled (if any) names for GSYMBOL based
652 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
653 objfile's obstack; but if COPY_NAME is 0 and if NAME is
654 NUL-terminated, then this function assumes that NAME is already
655 correctly saved (either permanently or with a lifetime tied to the
656 objfile), and it will not be copied.
658 The hash table corresponding to OBJFILE is used, and the memory
659 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
660 so the pointer can be discarded after calling this function. */
662 /* We have to be careful when dealing with Java names: when we run
663 into a Java minimal symbol, we don't know it's a Java symbol, so it
664 gets demangled as a C++ name. This is unfortunate, but there's not
665 much we can do about it: but when demangling partial symbols and
666 regular symbols, we'd better not reuse the wrong demangled name.
667 (See PR gdb/1039.) We solve this by putting a distinctive prefix
668 on Java names when storing them in the hash table. */
670 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
671 don't mind the Java prefix so much: different languages have
672 different demangling requirements, so it's only natural that we
673 need to keep language data around in our demangling cache. But
674 it's not good that the minimal symbol has the wrong demangled name.
675 Unfortunately, I can't think of any easy solution to that
678 #define JAVA_PREFIX "##JAVA$$"
679 #define JAVA_PREFIX_LEN 8
682 symbol_set_names (struct general_symbol_info
*gsymbol
,
683 const char *linkage_name
, int len
, int copy_name
,
684 struct objfile
*objfile
)
686 struct demangled_name_entry
**slot
;
687 /* A 0-terminated copy of the linkage name. */
688 const char *linkage_name_copy
;
689 /* A copy of the linkage name that might have a special Java prefix
690 added to it, for use when looking names up in the hash table. */
691 const char *lookup_name
;
692 /* The length of lookup_name. */
694 struct demangled_name_entry entry
;
696 if (gsymbol
->language
== language_ada
)
698 /* In Ada, we do the symbol lookups using the mangled name, so
699 we can save some space by not storing the demangled name.
701 As a side note, we have also observed some overlap between
702 the C++ mangling and Ada mangling, similarly to what has
703 been observed with Java. Because we don't store the demangled
704 name with the symbol, we don't need to use the same trick
707 gsymbol
->name
= linkage_name
;
710 char *name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
712 memcpy (name
, linkage_name
, len
);
714 gsymbol
->name
= name
;
716 symbol_set_demangled_name (gsymbol
, NULL
, &objfile
->objfile_obstack
);
721 if (objfile
->demangled_names_hash
== NULL
)
722 create_demangled_names_hash (objfile
);
724 /* The stabs reader generally provides names that are not
725 NUL-terminated; most of the other readers don't do this, so we
726 can just use the given copy, unless we're in the Java case. */
727 if (gsymbol
->language
== language_java
)
731 lookup_len
= len
+ JAVA_PREFIX_LEN
;
732 alloc_name
= alloca (lookup_len
+ 1);
733 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
734 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
735 alloc_name
[lookup_len
] = '\0';
737 lookup_name
= alloc_name
;
738 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
740 else if (linkage_name
[len
] != '\0')
745 alloc_name
= alloca (lookup_len
+ 1);
746 memcpy (alloc_name
, linkage_name
, len
);
747 alloc_name
[lookup_len
] = '\0';
749 lookup_name
= alloc_name
;
750 linkage_name_copy
= alloc_name
;
755 lookup_name
= linkage_name
;
756 linkage_name_copy
= linkage_name
;
759 entry
.mangled
= lookup_name
;
760 slot
= ((struct demangled_name_entry
**)
761 htab_find_slot (objfile
->demangled_names_hash
,
764 /* If this name is not in the hash table, add it. */
766 /* A C version of the symbol may have already snuck into the table.
767 This happens to, e.g., main.init (__go_init_main). Cope. */
768 || (gsymbol
->language
== language_go
769 && (*slot
)->demangled
[0] == '\0'))
771 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
773 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
775 /* Suppose we have demangled_name==NULL, copy_name==0, and
776 lookup_name==linkage_name. In this case, we already have the
777 mangled name saved, and we don't have a demangled name. So,
778 you might think we could save a little space by not recording
779 this in the hash table at all.
781 It turns out that it is actually important to still save such
782 an entry in the hash table, because storing this name gives
783 us better bcache hit rates for partial symbols. */
784 if (!copy_name
&& lookup_name
== linkage_name
)
786 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
787 offsetof (struct demangled_name_entry
,
789 + demangled_len
+ 1);
790 (*slot
)->mangled
= lookup_name
;
796 /* If we must copy the mangled name, put it directly after
797 the demangled name so we can have a single
799 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
800 offsetof (struct demangled_name_entry
,
802 + lookup_len
+ demangled_len
+ 2);
803 mangled_ptr
= &((*slot
)->demangled
[demangled_len
+ 1]);
804 strcpy (mangled_ptr
, lookup_name
);
805 (*slot
)->mangled
= mangled_ptr
;
808 if (demangled_name
!= NULL
)
810 strcpy ((*slot
)->demangled
, demangled_name
);
811 xfree (demangled_name
);
814 (*slot
)->demangled
[0] = '\0';
817 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
818 if ((*slot
)->demangled
[0] != '\0')
819 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
,
820 &objfile
->objfile_obstack
);
822 symbol_set_demangled_name (gsymbol
, NULL
, &objfile
->objfile_obstack
);
825 /* Return the source code name of a symbol. In languages where
826 demangling is necessary, this is the demangled name. */
829 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
831 switch (gsymbol
->language
)
838 case language_fortran
:
839 if (symbol_get_demangled_name (gsymbol
) != NULL
)
840 return symbol_get_demangled_name (gsymbol
);
843 return ada_decode_symbol (gsymbol
);
847 return gsymbol
->name
;
850 /* Return the demangled name for a symbol based on the language for
851 that symbol. If no demangled name exists, return NULL. */
854 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
856 const char *dem_name
= NULL
;
858 switch (gsymbol
->language
)
865 case language_fortran
:
866 dem_name
= symbol_get_demangled_name (gsymbol
);
869 dem_name
= ada_decode_symbol (gsymbol
);
877 /* Return the search name of a symbol---generally the demangled or
878 linkage name of the symbol, depending on how it will be searched for.
879 If there is no distinct demangled name, then returns the same value
880 (same pointer) as SYMBOL_LINKAGE_NAME. */
883 symbol_search_name (const struct general_symbol_info
*gsymbol
)
885 if (gsymbol
->language
== language_ada
)
886 return gsymbol
->name
;
888 return symbol_natural_name (gsymbol
);
891 /* Initialize the structure fields to zero values. */
894 init_sal (struct symtab_and_line
*sal
)
902 sal
->explicit_pc
= 0;
903 sal
->explicit_line
= 0;
908 /* Return 1 if the two sections are the same, or if they could
909 plausibly be copies of each other, one in an original object
910 file and another in a separated debug file. */
913 matching_obj_sections (struct obj_section
*obj_first
,
914 struct obj_section
*obj_second
)
916 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
917 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
920 /* If they're the same section, then they match. */
924 /* If either is NULL, give up. */
925 if (first
== NULL
|| second
== NULL
)
928 /* This doesn't apply to absolute symbols. */
929 if (first
->owner
== NULL
|| second
->owner
== NULL
)
932 /* If they're in the same object file, they must be different sections. */
933 if (first
->owner
== second
->owner
)
936 /* Check whether the two sections are potentially corresponding. They must
937 have the same size, address, and name. We can't compare section indexes,
938 which would be more reliable, because some sections may have been
940 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
943 /* In-memory addresses may start at a different offset, relativize them. */
944 if (bfd_get_section_vma (first
->owner
, first
)
945 - bfd_get_start_address (first
->owner
)
946 != bfd_get_section_vma (second
->owner
, second
)
947 - bfd_get_start_address (second
->owner
))
950 if (bfd_get_section_name (first
->owner
, first
) == NULL
951 || bfd_get_section_name (second
->owner
, second
) == NULL
952 || strcmp (bfd_get_section_name (first
->owner
, first
),
953 bfd_get_section_name (second
->owner
, second
)) != 0)
956 /* Otherwise check that they are in corresponding objfiles. */
959 if (obj
->obfd
== first
->owner
)
961 gdb_assert (obj
!= NULL
);
963 if (obj
->separate_debug_objfile
!= NULL
964 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
966 if (obj
->separate_debug_objfile_backlink
!= NULL
967 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
974 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
976 struct objfile
*objfile
;
977 struct minimal_symbol
*msymbol
;
979 /* If we know that this is not a text address, return failure. This is
980 necessary because we loop based on texthigh and textlow, which do
981 not include the data ranges. */
982 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
984 && (MSYMBOL_TYPE (msymbol
) == mst_data
985 || MSYMBOL_TYPE (msymbol
) == mst_bss
986 || MSYMBOL_TYPE (msymbol
) == mst_abs
987 || MSYMBOL_TYPE (msymbol
) == mst_file_data
988 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
991 ALL_OBJFILES (objfile
)
993 struct symtab
*result
= NULL
;
996 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1005 /* Debug symbols usually don't have section information. We need to dig that
1006 out of the minimal symbols and stash that in the debug symbol. */
1009 fixup_section (struct general_symbol_info
*ginfo
,
1010 CORE_ADDR addr
, struct objfile
*objfile
)
1012 struct minimal_symbol
*msym
;
1014 /* First, check whether a minimal symbol with the same name exists
1015 and points to the same address. The address check is required
1016 e.g. on PowerPC64, where the minimal symbol for a function will
1017 point to the function descriptor, while the debug symbol will
1018 point to the actual function code. */
1019 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1022 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1023 ginfo
->section
= SYMBOL_SECTION (msym
);
1027 /* Static, function-local variables do appear in the linker
1028 (minimal) symbols, but are frequently given names that won't
1029 be found via lookup_minimal_symbol(). E.g., it has been
1030 observed in frv-uclinux (ELF) executables that a static,
1031 function-local variable named "foo" might appear in the
1032 linker symbols as "foo.6" or "foo.3". Thus, there is no
1033 point in attempting to extend the lookup-by-name mechanism to
1034 handle this case due to the fact that there can be multiple
1037 So, instead, search the section table when lookup by name has
1038 failed. The ``addr'' and ``endaddr'' fields may have already
1039 been relocated. If so, the relocation offset (i.e. the
1040 ANOFFSET value) needs to be subtracted from these values when
1041 performing the comparison. We unconditionally subtract it,
1042 because, when no relocation has been performed, the ANOFFSET
1043 value will simply be zero.
1045 The address of the symbol whose section we're fixing up HAS
1046 NOT BEEN adjusted (relocated) yet. It can't have been since
1047 the section isn't yet known and knowing the section is
1048 necessary in order to add the correct relocation value. In
1049 other words, we wouldn't even be in this function (attempting
1050 to compute the section) if it were already known.
1052 Note that it is possible to search the minimal symbols
1053 (subtracting the relocation value if necessary) to find the
1054 matching minimal symbol, but this is overkill and much less
1055 efficient. It is not necessary to find the matching minimal
1056 symbol, only its section.
1058 Note that this technique (of doing a section table search)
1059 can fail when unrelocated section addresses overlap. For
1060 this reason, we still attempt a lookup by name prior to doing
1061 a search of the section table. */
1063 struct obj_section
*s
;
1065 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1067 int idx
= s
->the_bfd_section
->index
;
1068 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1070 if (obj_section_addr (s
) - offset
<= addr
1071 && addr
< obj_section_endaddr (s
) - offset
)
1073 ginfo
->obj_section
= s
;
1074 ginfo
->section
= idx
;
1082 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1089 if (SYMBOL_OBJ_SECTION (sym
))
1092 /* We either have an OBJFILE, or we can get at it from the sym's
1093 symtab. Anything else is a bug. */
1094 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1096 if (objfile
== NULL
)
1097 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1099 /* We should have an objfile by now. */
1100 gdb_assert (objfile
);
1102 switch (SYMBOL_CLASS (sym
))
1106 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1109 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1113 /* Nothing else will be listed in the minsyms -- no use looking
1118 fixup_section (&sym
->ginfo
, addr
, objfile
);
1123 /* Compute the demangled form of NAME as used by the various symbol
1124 lookup functions. The result is stored in *RESULT_NAME. Returns a
1125 cleanup which can be used to clean up the result.
1127 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1128 Normally, Ada symbol lookups are performed using the encoded name
1129 rather than the demangled name, and so it might seem to make sense
1130 for this function to return an encoded version of NAME.
1131 Unfortunately, we cannot do this, because this function is used in
1132 circumstances where it is not appropriate to try to encode NAME.
1133 For instance, when displaying the frame info, we demangle the name
1134 of each parameter, and then perform a symbol lookup inside our
1135 function using that demangled name. In Ada, certain functions
1136 have internally-generated parameters whose name contain uppercase
1137 characters. Encoding those name would result in those uppercase
1138 characters to become lowercase, and thus cause the symbol lookup
1142 demangle_for_lookup (const char *name
, enum language lang
,
1143 const char **result_name
)
1145 char *demangled_name
= NULL
;
1146 const char *modified_name
= NULL
;
1147 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1149 modified_name
= name
;
1151 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1152 lookup, so we can always binary search. */
1153 if (lang
== language_cplus
)
1155 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1158 modified_name
= demangled_name
;
1159 make_cleanup (xfree
, demangled_name
);
1163 /* If we were given a non-mangled name, canonicalize it
1164 according to the language (so far only for C++). */
1165 demangled_name
= cp_canonicalize_string (name
);
1168 modified_name
= demangled_name
;
1169 make_cleanup (xfree
, demangled_name
);
1173 else if (lang
== language_java
)
1175 demangled_name
= cplus_demangle (name
,
1176 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1179 modified_name
= demangled_name
;
1180 make_cleanup (xfree
, demangled_name
);
1183 else if (lang
== language_d
)
1185 demangled_name
= d_demangle (name
, 0);
1188 modified_name
= demangled_name
;
1189 make_cleanup (xfree
, demangled_name
);
1192 else if (lang
== language_go
)
1194 demangled_name
= go_demangle (name
, 0);
1197 modified_name
= demangled_name
;
1198 make_cleanup (xfree
, demangled_name
);
1202 *result_name
= modified_name
;
1206 /* Find the definition for a specified symbol name NAME
1207 in domain DOMAIN, visible from lexical block BLOCK.
1208 Returns the struct symbol pointer, or zero if no symbol is found.
1209 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1210 NAME is a field of the current implied argument `this'. If so set
1211 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1212 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1213 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1215 /* This function (or rather its subordinates) have a bunch of loops and
1216 it would seem to be attractive to put in some QUIT's (though I'm not really
1217 sure whether it can run long enough to be really important). But there
1218 are a few calls for which it would appear to be bad news to quit
1219 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1220 that there is C++ code below which can error(), but that probably
1221 doesn't affect these calls since they are looking for a known
1222 variable and thus can probably assume it will never hit the C++
1226 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1227 const domain_enum domain
, enum language lang
,
1228 struct field_of_this_result
*is_a_field_of_this
)
1230 const char *modified_name
;
1231 struct symbol
*returnval
;
1232 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1234 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1235 is_a_field_of_this
);
1236 do_cleanups (cleanup
);
1241 /* Behave like lookup_symbol_in_language, but performed with the
1242 current language. */
1245 lookup_symbol (const char *name
, const struct block
*block
,
1247 struct field_of_this_result
*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 /* Given TYPE, a structure/union,
1283 return 1 if the component named NAME from the ultimate target
1284 structure/union is defined, otherwise, return 0. */
1287 check_field (struct type
*type
, const char *name
,
1288 struct field_of_this_result
*is_a_field_of_this
)
1292 /* The type may be a stub. */
1293 CHECK_TYPEDEF (type
);
1295 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1297 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1299 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1301 is_a_field_of_this
->type
= type
;
1302 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1307 /* C++: If it was not found as a data field, then try to return it
1308 as a pointer to a method. */
1310 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1312 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1314 is_a_field_of_this
->type
= type
;
1315 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1320 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1321 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1327 /* Behave like lookup_symbol except that NAME is the natural name
1328 (e.g., demangled name) of the symbol that we're looking for. */
1330 static struct symbol
*
1331 lookup_symbol_aux (const char *name
, const struct block
*block
,
1332 const domain_enum domain
, enum language language
,
1333 struct field_of_this_result
*is_a_field_of_this
)
1336 const struct language_defn
*langdef
;
1338 /* Make sure we do something sensible with is_a_field_of_this, since
1339 the callers that set this parameter to some non-null value will
1340 certainly use it later. If we don't set it, the contents of
1341 is_a_field_of_this are undefined. */
1342 if (is_a_field_of_this
!= NULL
)
1343 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1345 /* Search specified block and its superiors. Don't search
1346 STATIC_BLOCK or GLOBAL_BLOCK. */
1348 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1352 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1353 check to see if NAME is a field of `this'. */
1355 langdef
= language_def (language
);
1357 /* Don't do this check if we are searching for a struct. It will
1358 not be found by check_field, but will be found by other
1360 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1362 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1366 struct type
*t
= sym
->type
;
1368 /* I'm not really sure that type of this can ever
1369 be typedefed; just be safe. */
1371 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1372 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1373 t
= TYPE_TARGET_TYPE (t
);
1375 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1376 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1377 error (_("Internal error: `%s' is not an aggregate"),
1378 langdef
->la_name_of_this
);
1380 if (check_field (t
, name
, is_a_field_of_this
))
1385 /* Now do whatever is appropriate for LANGUAGE to look
1386 up static and global variables. */
1388 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1392 /* Now search all static file-level symbols. Not strictly correct,
1393 but more useful than an error. */
1395 return lookup_static_symbol_aux (name
, domain
);
1398 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1399 first, then check the psymtabs. If a psymtab indicates the existence of the
1400 desired name as a file-level static, then do psymtab-to-symtab conversion on
1401 the fly and return the found symbol. */
1404 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1406 struct objfile
*objfile
;
1409 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1413 ALL_OBJFILES (objfile
)
1415 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1423 /* Check to see if the symbol is defined in BLOCK or its superiors.
1424 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1426 static struct symbol
*
1427 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1428 const domain_enum domain
,
1429 enum language language
)
1432 const struct block
*static_block
= block_static_block (block
);
1433 const char *scope
= block_scope (block
);
1435 /* Check if either no block is specified or it's a global block. */
1437 if (static_block
== NULL
)
1440 while (block
!= static_block
)
1442 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1446 if (language
== language_cplus
|| language
== language_fortran
)
1448 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1454 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1456 block
= BLOCK_SUPERBLOCK (block
);
1459 /* We've reached the edge of the function without finding a result. */
1464 /* Look up OBJFILE to BLOCK. */
1467 lookup_objfile_from_block (const struct block
*block
)
1469 struct objfile
*obj
;
1475 block
= block_global_block (block
);
1476 /* Go through SYMTABS. */
1477 ALL_SYMTABS (obj
, s
)
1478 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1480 if (obj
->separate_debug_objfile_backlink
)
1481 obj
= obj
->separate_debug_objfile_backlink
;
1489 /* Look up a symbol in a block; if found, fixup the symbol, and set
1490 block_found appropriately. */
1493 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1494 const domain_enum domain
)
1498 sym
= lookup_block_symbol (block
, name
, domain
);
1501 block_found
= block
;
1502 return fixup_symbol_section (sym
, NULL
);
1508 /* Check all global symbols in OBJFILE in symtabs and
1512 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1514 const domain_enum domain
)
1516 const struct objfile
*objfile
;
1518 struct blockvector
*bv
;
1519 const struct block
*block
;
1522 for (objfile
= main_objfile
;
1524 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1526 /* Go through symtabs. */
1527 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1529 bv
= BLOCKVECTOR (s
);
1530 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1531 sym
= lookup_block_symbol (block
, name
, domain
);
1534 block_found
= block
;
1535 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1539 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1548 /* Check to see if the symbol is defined in one of the OBJFILE's
1549 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1550 depending on whether or not we want to search global symbols or
1553 static struct symbol
*
1554 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1555 const char *name
, const domain_enum domain
)
1557 struct symbol
*sym
= NULL
;
1558 struct blockvector
*bv
;
1559 const struct block
*block
;
1562 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1564 bv
= BLOCKVECTOR (s
);
1565 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1566 sym
= lookup_block_symbol (block
, name
, domain
);
1569 block_found
= block
;
1570 return fixup_symbol_section (sym
, objfile
);
1577 /* Same as lookup_symbol_aux_objfile, except that it searches all
1578 objfiles. Return the first match found. */
1580 static struct symbol
*
1581 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1582 const domain_enum domain
)
1585 struct objfile
*objfile
;
1587 ALL_OBJFILES (objfile
)
1589 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1597 /* Wrapper around lookup_symbol_aux_objfile for search_symbols.
1598 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1599 and all related objfiles. */
1601 static struct symbol
*
1602 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1603 const char *linkage_name
,
1606 enum language lang
= current_language
->la_language
;
1607 const char *modified_name
;
1608 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1610 struct objfile
*main_objfile
, *cur_objfile
;
1612 if (objfile
->separate_debug_objfile_backlink
)
1613 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1615 main_objfile
= objfile
;
1617 for (cur_objfile
= main_objfile
;
1619 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1623 sym
= lookup_symbol_aux_objfile (cur_objfile
, GLOBAL_BLOCK
,
1624 modified_name
, domain
);
1626 sym
= lookup_symbol_aux_objfile (cur_objfile
, STATIC_BLOCK
,
1627 modified_name
, domain
);
1630 do_cleanups (cleanup
);
1635 do_cleanups (cleanup
);
1639 /* A helper function that throws an exception when a symbol was found
1640 in a psymtab but not in a symtab. */
1642 static void ATTRIBUTE_NORETURN
1643 error_in_psymtab_expansion (int kind
, const char *name
, struct symtab
*symtab
)
1646 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1647 %s may be an inlined function, or may be a template function\n \
1648 (if a template, try specifying an instantiation: %s<type>)."),
1649 kind
== GLOBAL_BLOCK
? "global" : "static",
1650 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1653 /* A helper function for lookup_symbol_aux that interfaces with the
1654 "quick" symbol table functions. */
1656 static struct symbol
*
1657 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1658 const char *name
, const domain_enum domain
)
1660 struct symtab
*symtab
;
1661 struct blockvector
*bv
;
1662 const struct block
*block
;
1667 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1671 bv
= BLOCKVECTOR (symtab
);
1672 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1673 sym
= lookup_block_symbol (block
, name
, domain
);
1675 error_in_psymtab_expansion (kind
, name
, symtab
);
1676 return fixup_symbol_section (sym
, objfile
);
1679 /* A default version of lookup_symbol_nonlocal for use by languages
1680 that can't think of anything better to do. This implements the C
1684 basic_lookup_symbol_nonlocal (const char *name
,
1685 const struct block
*block
,
1686 const domain_enum domain
)
1690 /* NOTE: carlton/2003-05-19: The comments below were written when
1691 this (or what turned into this) was part of lookup_symbol_aux;
1692 I'm much less worried about these questions now, since these
1693 decisions have turned out well, but I leave these comments here
1696 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1697 not it would be appropriate to search the current global block
1698 here as well. (That's what this code used to do before the
1699 is_a_field_of_this check was moved up.) On the one hand, it's
1700 redundant with the lookup_symbol_aux_symtabs search that happens
1701 next. On the other hand, if decode_line_1 is passed an argument
1702 like filename:var, then the user presumably wants 'var' to be
1703 searched for in filename. On the third hand, there shouldn't be
1704 multiple global variables all of which are named 'var', and it's
1705 not like decode_line_1 has ever restricted its search to only
1706 global variables in a single filename. All in all, only
1707 searching the static block here seems best: it's correct and it's
1710 /* NOTE: carlton/2002-12-05: There's also a possible performance
1711 issue here: if you usually search for global symbols in the
1712 current file, then it would be slightly better to search the
1713 current global block before searching all the symtabs. But there
1714 are other factors that have a much greater effect on performance
1715 than that one, so I don't think we should worry about that for
1718 sym
= lookup_symbol_static (name
, block
, domain
);
1722 return lookup_symbol_global (name
, block
, domain
);
1725 /* Lookup a symbol in the static block associated to BLOCK, if there
1726 is one; do nothing if BLOCK is NULL or a global block. */
1729 lookup_symbol_static (const char *name
,
1730 const struct block
*block
,
1731 const domain_enum domain
)
1733 const struct block
*static_block
= block_static_block (block
);
1735 if (static_block
!= NULL
)
1736 return lookup_symbol_aux_block (name
, static_block
, domain
);
1741 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1743 struct global_sym_lookup_data
1745 /* The name of the symbol we are searching for. */
1748 /* The domain to use for our search. */
1751 /* The field where the callback should store the symbol if found.
1752 It should be initialized to NULL before the search is started. */
1753 struct symbol
*result
;
1756 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1757 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1758 OBJFILE. The arguments for the search are passed via CB_DATA,
1759 which in reality is a pointer to struct global_sym_lookup_data. */
1762 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1765 struct global_sym_lookup_data
*data
=
1766 (struct global_sym_lookup_data
*) cb_data
;
1768 gdb_assert (data
->result
== NULL
);
1770 data
->result
= lookup_symbol_aux_objfile (objfile
, GLOBAL_BLOCK
,
1771 data
->name
, data
->domain
);
1772 if (data
->result
== NULL
)
1773 data
->result
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
,
1774 data
->name
, data
->domain
);
1776 /* If we found a match, tell the iterator to stop. Otherwise,
1778 return (data
->result
!= NULL
);
1781 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1785 lookup_symbol_global (const char *name
,
1786 const struct block
*block
,
1787 const domain_enum domain
)
1789 struct symbol
*sym
= NULL
;
1790 struct objfile
*objfile
= NULL
;
1791 struct global_sym_lookup_data lookup_data
;
1793 /* Call library-specific lookup procedure. */
1794 objfile
= lookup_objfile_from_block (block
);
1795 if (objfile
!= NULL
)
1796 sym
= solib_global_lookup (objfile
, name
, domain
);
1800 memset (&lookup_data
, 0, sizeof (lookup_data
));
1801 lookup_data
.name
= name
;
1802 lookup_data
.domain
= domain
;
1803 gdbarch_iterate_over_objfiles_in_search_order
1804 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1805 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1807 return lookup_data
.result
;
1811 symbol_matches_domain (enum language symbol_language
,
1812 domain_enum symbol_domain
,
1815 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1816 A Java class declaration also defines a typedef for the class.
1817 Similarly, any Ada type declaration implicitly defines a typedef. */
1818 if (symbol_language
== language_cplus
1819 || symbol_language
== language_d
1820 || symbol_language
== language_java
1821 || symbol_language
== language_ada
)
1823 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1824 && symbol_domain
== STRUCT_DOMAIN
)
1827 /* For all other languages, strict match is required. */
1828 return (symbol_domain
== domain
);
1831 /* Look up a type named NAME in the struct_domain. The type returned
1832 must not be opaque -- i.e., must have at least one field
1836 lookup_transparent_type (const char *name
)
1838 return current_language
->la_lookup_transparent_type (name
);
1841 /* A helper for basic_lookup_transparent_type that interfaces with the
1842 "quick" symbol table functions. */
1844 static struct type
*
1845 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1848 struct symtab
*symtab
;
1849 struct blockvector
*bv
;
1850 struct block
*block
;
1855 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1859 bv
= BLOCKVECTOR (symtab
);
1860 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1861 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1863 error_in_psymtab_expansion (kind
, name
, symtab
);
1865 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1866 return SYMBOL_TYPE (sym
);
1871 /* The standard implementation of lookup_transparent_type. This code
1872 was modeled on lookup_symbol -- the parts not relevant to looking
1873 up types were just left out. In particular it's assumed here that
1874 types are available in struct_domain and only at file-static or
1878 basic_lookup_transparent_type (const char *name
)
1881 struct symtab
*s
= NULL
;
1882 struct blockvector
*bv
;
1883 struct objfile
*objfile
;
1884 struct block
*block
;
1887 /* Now search all the global symbols. Do the symtab's first, then
1888 check the psymtab's. If a psymtab indicates the existence
1889 of the desired name as a global, then do psymtab-to-symtab
1890 conversion on the fly and return the found symbol. */
1892 ALL_OBJFILES (objfile
)
1894 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1896 bv
= BLOCKVECTOR (s
);
1897 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1898 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1899 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1901 return SYMBOL_TYPE (sym
);
1906 ALL_OBJFILES (objfile
)
1908 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1913 /* Now search the static file-level symbols.
1914 Not strictly correct, but more useful than an error.
1915 Do the symtab's first, then
1916 check the psymtab's. If a psymtab indicates the existence
1917 of the desired name as a file-level static, then do psymtab-to-symtab
1918 conversion on the fly and return the found symbol. */
1920 ALL_OBJFILES (objfile
)
1922 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1924 bv
= BLOCKVECTOR (s
);
1925 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1926 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1927 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1929 return SYMBOL_TYPE (sym
);
1934 ALL_OBJFILES (objfile
)
1936 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1941 return (struct type
*) 0;
1944 /* Find the name of the file containing main(). */
1945 /* FIXME: What about languages without main() or specially linked
1946 executables that have no main() ? */
1949 find_main_filename (void)
1951 struct objfile
*objfile
;
1952 char *name
= main_name ();
1954 ALL_OBJFILES (objfile
)
1960 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1967 /* Search BLOCK for symbol NAME in DOMAIN.
1969 Note that if NAME is the demangled form of a C++ symbol, we will fail
1970 to find a match during the binary search of the non-encoded names, but
1971 for now we don't worry about the slight inefficiency of looking for
1972 a match we'll never find, since it will go pretty quick. Once the
1973 binary search terminates, we drop through and do a straight linear
1974 search on the symbols. Each symbol which is marked as being a ObjC/C++
1975 symbol (language_cplus or language_objc set) has both the encoded and
1976 non-encoded names tested for a match. */
1979 lookup_block_symbol (const struct block
*block
, const char *name
,
1980 const domain_enum domain
)
1982 struct block_iterator iter
;
1985 if (!BLOCK_FUNCTION (block
))
1987 for (sym
= block_iter_name_first (block
, name
, &iter
);
1989 sym
= block_iter_name_next (name
, &iter
))
1991 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1992 SYMBOL_DOMAIN (sym
), domain
))
1999 /* Note that parameter symbols do not always show up last in the
2000 list; this loop makes sure to take anything else other than
2001 parameter symbols first; it only uses parameter symbols as a
2002 last resort. Note that this only takes up extra computation
2005 struct symbol
*sym_found
= NULL
;
2007 for (sym
= block_iter_name_first (block
, name
, &iter
);
2009 sym
= block_iter_name_next (name
, &iter
))
2011 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2012 SYMBOL_DOMAIN (sym
), domain
))
2015 if (!SYMBOL_IS_ARGUMENT (sym
))
2021 return (sym_found
); /* Will be NULL if not found. */
2025 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2027 For each symbol that matches, CALLBACK is called. The symbol and
2028 DATA are passed to the callback.
2030 If CALLBACK returns zero, the iteration ends. Otherwise, the
2031 search continues. */
2034 iterate_over_symbols (const struct block
*block
, const char *name
,
2035 const domain_enum domain
,
2036 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
))
2055 /* Find the symtab associated with PC and SECTION. Look through the
2056 psymtabs and read in another symtab if necessary. */
2059 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2062 struct blockvector
*bv
;
2063 struct symtab
*s
= NULL
;
2064 struct symtab
*best_s
= NULL
;
2065 struct objfile
*objfile
;
2066 CORE_ADDR distance
= 0;
2067 struct minimal_symbol
*msymbol
;
2069 /* If we know that this is not a text address, return failure. This is
2070 necessary because we loop based on the block's high and low code
2071 addresses, which do not include the data ranges, and because
2072 we call find_pc_sect_psymtab which has a similar restriction based
2073 on the partial_symtab's texthigh and textlow. */
2074 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2076 && (MSYMBOL_TYPE (msymbol
) == mst_data
2077 || MSYMBOL_TYPE (msymbol
) == mst_bss
2078 || MSYMBOL_TYPE (msymbol
) == mst_abs
2079 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2080 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2083 /* Search all symtabs for the one whose file contains our address, and which
2084 is the smallest of all the ones containing the address. This is designed
2085 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2086 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2087 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2089 This happens for native ecoff format, where code from included files
2090 gets its own symtab. The symtab for the included file should have
2091 been read in already via the dependency mechanism.
2092 It might be swifter to create several symtabs with the same name
2093 like xcoff does (I'm not sure).
2095 It also happens for objfiles that have their functions reordered.
2096 For these, the symtab we are looking for is not necessarily read in. */
2098 ALL_PRIMARY_SYMTABS (objfile
, s
)
2100 bv
= BLOCKVECTOR (s
);
2101 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2103 if (BLOCK_START (b
) <= pc
2104 && BLOCK_END (b
) > pc
2106 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2108 /* For an objfile that has its functions reordered,
2109 find_pc_psymtab will find the proper partial symbol table
2110 and we simply return its corresponding symtab. */
2111 /* In order to better support objfiles that contain both
2112 stabs and coff debugging info, we continue on if a psymtab
2114 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2116 struct symtab
*result
;
2119 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2128 struct block_iterator iter
;
2129 struct symbol
*sym
= NULL
;
2131 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2133 fixup_symbol_section (sym
, objfile
);
2134 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2138 continue; /* No symbol in this symtab matches
2141 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2149 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2151 ALL_OBJFILES (objfile
)
2153 struct symtab
*result
;
2157 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2168 /* Find the symtab associated with PC. Look through the psymtabs and read
2169 in another symtab if necessary. Backward compatibility, no section. */
2172 find_pc_symtab (CORE_ADDR pc
)
2174 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2178 /* Find the source file and line number for a given PC value and SECTION.
2179 Return a structure containing a symtab pointer, a line number,
2180 and a pc range for the entire source line.
2181 The value's .pc field is NOT the specified pc.
2182 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2183 use the line that ends there. Otherwise, in that case, the line
2184 that begins there is used. */
2186 /* The big complication here is that a line may start in one file, and end just
2187 before the start of another file. This usually occurs when you #include
2188 code in the middle of a subroutine. To properly find the end of a line's PC
2189 range, we must search all symtabs associated with this compilation unit, and
2190 find the one whose first PC is closer than that of the next line in this
2193 /* If it's worth the effort, we could be using a binary search. */
2195 struct symtab_and_line
2196 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2199 struct linetable
*l
;
2202 struct linetable_entry
*item
;
2203 struct symtab_and_line val
;
2204 struct blockvector
*bv
;
2205 struct minimal_symbol
*msymbol
;
2206 struct minimal_symbol
*mfunsym
;
2207 struct objfile
*objfile
;
2209 /* Info on best line seen so far, and where it starts, and its file. */
2211 struct linetable_entry
*best
= NULL
;
2212 CORE_ADDR best_end
= 0;
2213 struct symtab
*best_symtab
= 0;
2215 /* Store here the first line number
2216 of a file which contains the line at the smallest pc after PC.
2217 If we don't find a line whose range contains PC,
2218 we will use a line one less than this,
2219 with a range from the start of that file to the first line's pc. */
2220 struct linetable_entry
*alt
= NULL
;
2222 /* Info on best line seen in this file. */
2224 struct linetable_entry
*prev
;
2226 /* If this pc is not from the current frame,
2227 it is the address of the end of a call instruction.
2228 Quite likely that is the start of the following statement.
2229 But what we want is the statement containing the instruction.
2230 Fudge the pc to make sure we get that. */
2232 init_sal (&val
); /* initialize to zeroes */
2234 val
.pspace
= current_program_space
;
2236 /* It's tempting to assume that, if we can't find debugging info for
2237 any function enclosing PC, that we shouldn't search for line
2238 number info, either. However, GAS can emit line number info for
2239 assembly files --- very helpful when debugging hand-written
2240 assembly code. In such a case, we'd have no debug info for the
2241 function, but we would have line info. */
2246 /* elz: added this because this function returned the wrong
2247 information if the pc belongs to a stub (import/export)
2248 to call a shlib function. This stub would be anywhere between
2249 two functions in the target, and the line info was erroneously
2250 taken to be the one of the line before the pc. */
2252 /* RT: Further explanation:
2254 * We have stubs (trampolines) inserted between procedures.
2256 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2257 * exists in the main image.
2259 * In the minimal symbol table, we have a bunch of symbols
2260 * sorted by start address. The stubs are marked as "trampoline",
2261 * the others appear as text. E.g.:
2263 * Minimal symbol table for main image
2264 * main: code for main (text symbol)
2265 * shr1: stub (trampoline symbol)
2266 * foo: code for foo (text symbol)
2268 * Minimal symbol table for "shr1" image:
2270 * shr1: code for shr1 (text symbol)
2273 * So the code below is trying to detect if we are in the stub
2274 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2275 * and if found, do the symbolization from the real-code address
2276 * rather than the stub address.
2278 * Assumptions being made about the minimal symbol table:
2279 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2280 * if we're really in the trampoline.s If we're beyond it (say
2281 * we're in "foo" in the above example), it'll have a closer
2282 * symbol (the "foo" text symbol for example) and will not
2283 * return the trampoline.
2284 * 2. lookup_minimal_symbol_text() will find a real text symbol
2285 * corresponding to the trampoline, and whose address will
2286 * be different than the trampoline address. I put in a sanity
2287 * check for the address being the same, to avoid an
2288 * infinite recursion.
2290 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2291 if (msymbol
!= NULL
)
2292 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2294 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2296 if (mfunsym
== NULL
)
2297 /* I eliminated this warning since it is coming out
2298 * in the following situation:
2299 * gdb shmain // test program with shared libraries
2300 * (gdb) break shr1 // function in shared lib
2301 * Warning: In stub for ...
2302 * In the above situation, the shared lib is not loaded yet,
2303 * so of course we can't find the real func/line info,
2304 * but the "break" still works, and the warning is annoying.
2305 * So I commented out the warning. RT */
2306 /* warning ("In stub for %s; unable to find real function/line info",
2307 SYMBOL_LINKAGE_NAME (msymbol)); */
2310 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2311 == SYMBOL_VALUE_ADDRESS (msymbol
))
2312 /* Avoid infinite recursion */
2313 /* See above comment about why warning is commented out. */
2314 /* warning ("In stub for %s; unable to find real function/line info",
2315 SYMBOL_LINKAGE_NAME (msymbol)); */
2319 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2323 s
= find_pc_sect_symtab (pc
, section
);
2326 /* If no symbol information, return previous pc. */
2333 bv
= BLOCKVECTOR (s
);
2334 objfile
= s
->objfile
;
2336 /* Look at all the symtabs that share this blockvector.
2337 They all have the same apriori range, that we found was right;
2338 but they have different line tables. */
2340 ALL_OBJFILE_SYMTABS (objfile
, s
)
2342 if (BLOCKVECTOR (s
) != bv
)
2345 /* Find the best line in this symtab. */
2352 /* I think len can be zero if the symtab lacks line numbers
2353 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2354 I'm not sure which, and maybe it depends on the symbol
2360 item
= l
->item
; /* Get first line info. */
2362 /* Is this file's first line closer than the first lines of other files?
2363 If so, record this file, and its first line, as best alternate. */
2364 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2367 for (i
= 0; i
< len
; i
++, item
++)
2369 /* Leave prev pointing to the linetable entry for the last line
2370 that started at or before PC. */
2377 /* At this point, prev points at the line whose start addr is <= pc, and
2378 item points at the next line. If we ran off the end of the linetable
2379 (pc >= start of the last line), then prev == item. If pc < start of
2380 the first line, prev will not be set. */
2382 /* Is this file's best line closer than the best in the other files?
2383 If so, record this file, and its best line, as best so far. Don't
2384 save prev if it represents the end of a function (i.e. line number
2385 0) instead of a real line. */
2387 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2392 /* Discard BEST_END if it's before the PC of the current BEST. */
2393 if (best_end
<= best
->pc
)
2397 /* If another line (denoted by ITEM) is in the linetable and its
2398 PC is after BEST's PC, but before the current BEST_END, then
2399 use ITEM's PC as the new best_end. */
2400 if (best
&& i
< len
&& item
->pc
> best
->pc
2401 && (best_end
== 0 || best_end
> item
->pc
))
2402 best_end
= item
->pc
;
2407 /* If we didn't find any line number info, just return zeros.
2408 We used to return alt->line - 1 here, but that could be
2409 anywhere; if we don't have line number info for this PC,
2410 don't make some up. */
2413 else if (best
->line
== 0)
2415 /* If our best fit is in a range of PC's for which no line
2416 number info is available (line number is zero) then we didn't
2417 find any valid line information. */
2422 val
.symtab
= best_symtab
;
2423 val
.line
= best
->line
;
2425 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2430 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2432 val
.section
= section
;
2436 /* Backward compatibility (no section). */
2438 struct symtab_and_line
2439 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2441 struct obj_section
*section
;
2443 section
= find_pc_overlay (pc
);
2444 if (pc_in_unmapped_range (pc
, section
))
2445 pc
= overlay_mapped_address (pc
, section
);
2446 return find_pc_sect_line (pc
, section
, notcurrent
);
2449 /* Find line number LINE in any symtab whose name is the same as
2452 If found, return the symtab that contains the linetable in which it was
2453 found, set *INDEX to the index in the linetable of the best entry
2454 found, and set *EXACT_MATCH nonzero if the value returned is an
2457 If not found, return NULL. */
2460 find_line_symtab (struct symtab
*symtab
, int line
,
2461 int *index
, int *exact_match
)
2463 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2465 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2469 struct linetable
*best_linetable
;
2470 struct symtab
*best_symtab
;
2472 /* First try looking it up in the given symtab. */
2473 best_linetable
= LINETABLE (symtab
);
2474 best_symtab
= symtab
;
2475 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2476 if (best_index
< 0 || !exact
)
2478 /* Didn't find an exact match. So we better keep looking for
2479 another symtab with the same name. In the case of xcoff,
2480 multiple csects for one source file (produced by IBM's FORTRAN
2481 compiler) produce multiple symtabs (this is unavoidable
2482 assuming csects can be at arbitrary places in memory and that
2483 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2485 /* BEST is the smallest linenumber > LINE so far seen,
2486 or 0 if none has been seen so far.
2487 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2490 struct objfile
*objfile
;
2493 if (best_index
>= 0)
2494 best
= best_linetable
->item
[best_index
].line
;
2498 ALL_OBJFILES (objfile
)
2501 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2502 symtab_to_fullname (symtab
));
2505 ALL_SYMTABS (objfile
, s
)
2507 struct linetable
*l
;
2510 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2512 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2513 symtab_to_fullname (s
)) != 0)
2516 ind
= find_line_common (l
, line
, &exact
, 0);
2526 if (best
== 0 || l
->item
[ind
].line
< best
)
2528 best
= l
->item
[ind
].line
;
2541 *index
= best_index
;
2543 *exact_match
= exact
;
2548 /* Given SYMTAB, returns all the PCs function in the symtab that
2549 exactly match LINE. Returns NULL if there are no exact matches,
2550 but updates BEST_ITEM in this case. */
2553 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2554 struct linetable_entry
**best_item
)
2557 VEC (CORE_ADDR
) *result
= NULL
;
2559 /* First, collect all the PCs that are at this line. */
2565 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2571 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2573 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2579 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2587 /* Set the PC value for a given source file and line number and return true.
2588 Returns zero for invalid line number (and sets the PC to 0).
2589 The source file is specified with a struct symtab. */
2592 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2594 struct linetable
*l
;
2601 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2604 l
= LINETABLE (symtab
);
2605 *pc
= l
->item
[ind
].pc
;
2612 /* Find the range of pc values in a line.
2613 Store the starting pc of the line into *STARTPTR
2614 and the ending pc (start of next line) into *ENDPTR.
2615 Returns 1 to indicate success.
2616 Returns 0 if could not find the specified line. */
2619 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2622 CORE_ADDR startaddr
;
2623 struct symtab_and_line found_sal
;
2626 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2629 /* This whole function is based on address. For example, if line 10 has
2630 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2631 "info line *0x123" should say the line goes from 0x100 to 0x200
2632 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2633 This also insures that we never give a range like "starts at 0x134
2634 and ends at 0x12c". */
2636 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2637 if (found_sal
.line
!= sal
.line
)
2639 /* The specified line (sal) has zero bytes. */
2640 *startptr
= found_sal
.pc
;
2641 *endptr
= found_sal
.pc
;
2645 *startptr
= found_sal
.pc
;
2646 *endptr
= found_sal
.end
;
2651 /* Given a line table and a line number, return the index into the line
2652 table for the pc of the nearest line whose number is >= the specified one.
2653 Return -1 if none is found. The value is >= 0 if it is an index.
2654 START is the index at which to start searching the line table.
2656 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2659 find_line_common (struct linetable
*l
, int lineno
,
2660 int *exact_match
, int start
)
2665 /* BEST is the smallest linenumber > LINENO so far seen,
2666 or 0 if none has been seen so far.
2667 BEST_INDEX identifies the item for it. */
2669 int best_index
= -1;
2680 for (i
= start
; i
< len
; i
++)
2682 struct linetable_entry
*item
= &(l
->item
[i
]);
2684 if (item
->line
== lineno
)
2686 /* Return the first (lowest address) entry which matches. */
2691 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2698 /* If we got here, we didn't get an exact match. */
2703 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2705 struct symtab_and_line sal
;
2707 sal
= find_pc_line (pc
, 0);
2710 return sal
.symtab
!= 0;
2713 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2714 address for that function that has an entry in SYMTAB's line info
2715 table. If such an entry cannot be found, return FUNC_ADDR
2719 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2721 CORE_ADDR func_start
, func_end
;
2722 struct linetable
*l
;
2725 /* Give up if this symbol has no lineinfo table. */
2726 l
= LINETABLE (symtab
);
2730 /* Get the range for the function's PC values, or give up if we
2731 cannot, for some reason. */
2732 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2735 /* Linetable entries are ordered by PC values, see the commentary in
2736 symtab.h where `struct linetable' is defined. Thus, the first
2737 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2738 address we are looking for. */
2739 for (i
= 0; i
< l
->nitems
; i
++)
2741 struct linetable_entry
*item
= &(l
->item
[i
]);
2743 /* Don't use line numbers of zero, they mark special entries in
2744 the table. See the commentary on symtab.h before the
2745 definition of struct linetable. */
2746 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2753 /* Given a function symbol SYM, find the symtab and line for the start
2755 If the argument FUNFIRSTLINE is nonzero, we want the first line
2756 of real code inside the function. */
2758 struct symtab_and_line
2759 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2761 struct symtab_and_line sal
;
2763 fixup_symbol_section (sym
, NULL
);
2764 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2765 SYMBOL_OBJ_SECTION (sym
), 0);
2767 /* We always should have a line for the function start address.
2768 If we don't, something is odd. Create a plain SAL refering
2769 just the PC and hope that skip_prologue_sal (if requested)
2770 can find a line number for after the prologue. */
2771 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2774 sal
.pspace
= current_program_space
;
2775 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2776 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2780 skip_prologue_sal (&sal
);
2785 /* Adjust SAL to the first instruction past the function prologue.
2786 If the PC was explicitly specified, the SAL is not changed.
2787 If the line number was explicitly specified, at most the SAL's PC
2788 is updated. If SAL is already past the prologue, then do nothing. */
2791 skip_prologue_sal (struct symtab_and_line
*sal
)
2794 struct symtab_and_line start_sal
;
2795 struct cleanup
*old_chain
;
2796 CORE_ADDR pc
, saved_pc
;
2797 struct obj_section
*section
;
2799 struct objfile
*objfile
;
2800 struct gdbarch
*gdbarch
;
2801 struct block
*b
, *function_block
;
2802 int force_skip
, skip
;
2804 /* Do not change the SAL if PC was specified explicitly. */
2805 if (sal
->explicit_pc
)
2808 old_chain
= save_current_space_and_thread ();
2809 switch_to_program_space_and_thread (sal
->pspace
);
2811 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2814 fixup_symbol_section (sym
, NULL
);
2816 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2817 section
= SYMBOL_OBJ_SECTION (sym
);
2818 name
= SYMBOL_LINKAGE_NAME (sym
);
2819 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2823 struct minimal_symbol
*msymbol
2824 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2826 if (msymbol
== NULL
)
2828 do_cleanups (old_chain
);
2832 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2833 section
= SYMBOL_OBJ_SECTION (msymbol
);
2834 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2835 objfile
= msymbol_objfile (msymbol
);
2838 gdbarch
= get_objfile_arch (objfile
);
2840 /* Process the prologue in two passes. In the first pass try to skip the
2841 prologue (SKIP is true) and verify there is a real need for it (indicated
2842 by FORCE_SKIP). If no such reason was found run a second pass where the
2843 prologue is not skipped (SKIP is false). */
2848 /* Be conservative - allow direct PC (without skipping prologue) only if we
2849 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2850 have to be set by the caller so we use SYM instead. */
2851 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2859 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2860 so that gdbarch_skip_prologue has something unique to work on. */
2861 if (section_is_overlay (section
) && !section_is_mapped (section
))
2862 pc
= overlay_unmapped_address (pc
, section
);
2864 /* Skip "first line" of function (which is actually its prologue). */
2865 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2867 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2869 /* For overlays, map pc back into its mapped VMA range. */
2870 pc
= overlay_mapped_address (pc
, section
);
2872 /* Calculate line number. */
2873 start_sal
= find_pc_sect_line (pc
, section
, 0);
2875 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2876 line is still part of the same function. */
2877 if (skip
&& start_sal
.pc
!= pc
2878 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2879 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2880 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2881 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2883 /* First pc of next line */
2885 /* Recalculate the line number (might not be N+1). */
2886 start_sal
= find_pc_sect_line (pc
, section
, 0);
2889 /* On targets with executable formats that don't have a concept of
2890 constructors (ELF with .init has, PE doesn't), gcc emits a call
2891 to `__main' in `main' between the prologue and before user
2893 if (gdbarch_skip_main_prologue_p (gdbarch
)
2894 && name
&& strcmp_iw (name
, "main") == 0)
2896 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2897 /* Recalculate the line number (might not be N+1). */
2898 start_sal
= find_pc_sect_line (pc
, section
, 0);
2902 while (!force_skip
&& skip
--);
2904 /* If we still don't have a valid source line, try to find the first
2905 PC in the lineinfo table that belongs to the same function. This
2906 happens with COFF debug info, which does not seem to have an
2907 entry in lineinfo table for the code after the prologue which has
2908 no direct relation to source. For example, this was found to be
2909 the case with the DJGPP target using "gcc -gcoff" when the
2910 compiler inserted code after the prologue to make sure the stack
2912 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2914 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2915 /* Recalculate the line number. */
2916 start_sal
= find_pc_sect_line (pc
, section
, 0);
2919 do_cleanups (old_chain
);
2921 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2922 forward SAL to the end of the prologue. */
2927 sal
->section
= section
;
2929 /* Unless the explicit_line flag was set, update the SAL line
2930 and symtab to correspond to the modified PC location. */
2931 if (sal
->explicit_line
)
2934 sal
->symtab
= start_sal
.symtab
;
2935 sal
->line
= start_sal
.line
;
2936 sal
->end
= start_sal
.end
;
2938 /* Check if we are now inside an inlined function. If we can,
2939 use the call site of the function instead. */
2940 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2941 function_block
= NULL
;
2944 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2946 else if (BLOCK_FUNCTION (b
) != NULL
)
2948 b
= BLOCK_SUPERBLOCK (b
);
2950 if (function_block
!= NULL
2951 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2953 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2954 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2958 /* If P is of the form "operator[ \t]+..." where `...' is
2959 some legitimate operator text, return a pointer to the
2960 beginning of the substring of the operator text.
2961 Otherwise, return "". */
2964 operator_chars (char *p
, char **end
)
2967 if (strncmp (p
, "operator", 8))
2971 /* Don't get faked out by `operator' being part of a longer
2973 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2976 /* Allow some whitespace between `operator' and the operator symbol. */
2977 while (*p
== ' ' || *p
== '\t')
2980 /* Recognize 'operator TYPENAME'. */
2982 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2986 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2995 case '\\': /* regexp quoting */
2998 if (p
[2] == '=') /* 'operator\*=' */
3000 else /* 'operator\*' */
3004 else if (p
[1] == '[')
3007 error (_("mismatched quoting on brackets, "
3008 "try 'operator\\[\\]'"));
3009 else if (p
[2] == '\\' && p
[3] == ']')
3011 *end
= p
+ 4; /* 'operator\[\]' */
3015 error (_("nothing is allowed between '[' and ']'"));
3019 /* Gratuitous qoute: skip it and move on. */
3041 if (p
[0] == '-' && p
[1] == '>')
3043 /* Struct pointer member operator 'operator->'. */
3046 *end
= p
+ 3; /* 'operator->*' */
3049 else if (p
[2] == '\\')
3051 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3056 *end
= p
+ 2; /* 'operator->' */
3060 if (p
[1] == '=' || p
[1] == p
[0])
3071 error (_("`operator ()' must be specified "
3072 "without whitespace in `()'"));
3077 error (_("`operator ?:' must be specified "
3078 "without whitespace in `?:'"));
3083 error (_("`operator []' must be specified "
3084 "without whitespace in `[]'"));
3088 error (_("`operator %s' not supported"), p
);
3097 /* Cache to watch for file names already seen by filename_seen. */
3099 struct filename_seen_cache
3101 /* Table of files seen so far. */
3103 /* Initial size of the table. It automagically grows from here. */
3104 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3107 /* filename_seen_cache constructor. */
3109 static struct filename_seen_cache
*
3110 create_filename_seen_cache (void)
3112 struct filename_seen_cache
*cache
;
3114 cache
= XNEW (struct filename_seen_cache
);
3115 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3116 filename_hash
, filename_eq
,
3117 NULL
, xcalloc
, xfree
);
3122 /* Empty the cache, but do not delete it. */
3125 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3127 htab_empty (cache
->tab
);
3130 /* filename_seen_cache destructor.
3131 This takes a void * argument as it is generally used as a cleanup. */
3134 delete_filename_seen_cache (void *ptr
)
3136 struct filename_seen_cache
*cache
= ptr
;
3138 htab_delete (cache
->tab
);
3142 /* If FILE is not already in the table of files in CACHE, return zero;
3143 otherwise return non-zero. Optionally add FILE to the table if ADD
3146 NOTE: We don't manage space for FILE, we assume FILE lives as long
3147 as the caller needs. */
3150 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3154 /* Is FILE in tab? */
3155 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3159 /* No; maybe add it to tab. */
3161 *slot
= (char *) file
;
3166 /* Data structure to maintain printing state for output_source_filename. */
3168 struct output_source_filename_data
3170 /* Cache of what we've seen so far. */
3171 struct filename_seen_cache
*filename_seen_cache
;
3173 /* Flag of whether we're printing the first one. */
3177 /* Slave routine for sources_info. Force line breaks at ,'s.
3178 NAME is the name to print.
3179 DATA contains the state for printing and watching for duplicates. */
3182 output_source_filename (const char *name
,
3183 struct output_source_filename_data
*data
)
3185 /* Since a single source file can result in several partial symbol
3186 tables, we need to avoid printing it more than once. Note: if
3187 some of the psymtabs are read in and some are not, it gets
3188 printed both under "Source files for which symbols have been
3189 read" and "Source files for which symbols will be read in on
3190 demand". I consider this a reasonable way to deal with the
3191 situation. I'm not sure whether this can also happen for
3192 symtabs; it doesn't hurt to check. */
3194 /* Was NAME already seen? */
3195 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3197 /* Yes; don't print it again. */
3201 /* No; print it and reset *FIRST. */
3203 printf_filtered (", ");
3207 fputs_filtered (name
, gdb_stdout
);
3210 /* A callback for map_partial_symbol_filenames. */
3213 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3216 output_source_filename (fullname
? fullname
: filename
, data
);
3220 sources_info (char *ignore
, int from_tty
)
3223 struct objfile
*objfile
;
3224 struct output_source_filename_data data
;
3225 struct cleanup
*cleanups
;
3227 if (!have_full_symbols () && !have_partial_symbols ())
3229 error (_("No symbol table is loaded. Use the \"file\" command."));
3232 data
.filename_seen_cache
= create_filename_seen_cache ();
3233 cleanups
= make_cleanup (delete_filename_seen_cache
,
3234 data
.filename_seen_cache
);
3236 printf_filtered ("Source files for which symbols have been read in:\n\n");
3239 ALL_SYMTABS (objfile
, s
)
3241 const char *fullname
= symtab_to_fullname (s
);
3243 output_source_filename (fullname
, &data
);
3245 printf_filtered ("\n\n");
3247 printf_filtered ("Source files for which symbols "
3248 "will be read in on demand:\n\n");
3250 clear_filename_seen_cache (data
.filename_seen_cache
);
3252 map_partial_symbol_filenames (output_partial_symbol_filename
, &data
,
3253 1 /*need_fullname*/);
3254 printf_filtered ("\n");
3256 do_cleanups (cleanups
);
3259 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3260 non-zero compare only lbasename of FILES. */
3263 file_matches (const char *file
, char *files
[], int nfiles
, int basenames
)
3267 if (file
!= NULL
&& nfiles
!= 0)
3269 for (i
= 0; i
< nfiles
; i
++)
3271 if (compare_filenames_for_search (file
, (basenames
3272 ? lbasename (files
[i
])
3277 else if (nfiles
== 0)
3282 /* Free any memory associated with a search. */
3285 free_search_symbols (struct symbol_search
*symbols
)
3287 struct symbol_search
*p
;
3288 struct symbol_search
*next
;
3290 for (p
= symbols
; p
!= NULL
; p
= next
)
3298 do_free_search_symbols_cleanup (void *symbols
)
3300 free_search_symbols (symbols
);
3304 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3306 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3309 /* Helper function for sort_search_symbols and qsort. Can only
3310 sort symbols, not minimal symbols. */
3313 compare_search_syms (const void *sa
, const void *sb
)
3315 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3316 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3318 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3319 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3322 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3323 prevtail where it is, but update its next pointer to point to
3324 the first of the sorted symbols. */
3326 static struct symbol_search
*
3327 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3329 struct symbol_search
**symbols
, *symp
, *old_next
;
3332 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3334 symp
= prevtail
->next
;
3335 for (i
= 0; i
< nfound
; i
++)
3340 /* Generally NULL. */
3343 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3344 compare_search_syms
);
3347 for (i
= 0; i
< nfound
; i
++)
3349 symp
->next
= symbols
[i
];
3352 symp
->next
= old_next
;
3358 /* An object of this type is passed as the user_data to the
3359 expand_symtabs_matching method. */
3360 struct search_symbols_data
3365 /* It is true if PREG contains valid data, false otherwise. */
3366 unsigned preg_p
: 1;
3370 /* A callback for expand_symtabs_matching. */
3373 search_symbols_file_matches (const char *filename
, void *user_data
,
3376 struct search_symbols_data
*data
= user_data
;
3378 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3381 /* A callback for expand_symtabs_matching. */
3384 search_symbols_name_matches (const char *symname
, void *user_data
)
3386 struct search_symbols_data
*data
= user_data
;
3388 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3391 /* Search the symbol table for matches to the regular expression REGEXP,
3392 returning the results in *MATCHES.
3394 Only symbols of KIND are searched:
3395 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3396 and constants (enums)
3397 FUNCTIONS_DOMAIN - search all functions
3398 TYPES_DOMAIN - search all type names
3399 ALL_DOMAIN - an internal error for this function
3401 free_search_symbols should be called when *MATCHES is no longer needed.
3403 The results are sorted locally; each symtab's global and static blocks are
3404 separately alphabetized. */
3407 search_symbols (char *regexp
, enum search_domain kind
,
3408 int nfiles
, char *files
[],
3409 struct symbol_search
**matches
)
3412 struct blockvector
*bv
;
3415 struct block_iterator iter
;
3417 struct objfile
*objfile
;
3418 struct minimal_symbol
*msymbol
;
3420 static const enum minimal_symbol_type types
[]
3421 = {mst_data
, mst_text
, mst_abs
};
3422 static const enum minimal_symbol_type types2
[]
3423 = {mst_bss
, mst_file_text
, mst_abs
};
3424 static const enum minimal_symbol_type types3
[]
3425 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3426 static const enum minimal_symbol_type types4
[]
3427 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3428 enum minimal_symbol_type ourtype
;
3429 enum minimal_symbol_type ourtype2
;
3430 enum minimal_symbol_type ourtype3
;
3431 enum minimal_symbol_type ourtype4
;
3432 struct symbol_search
*sr
;
3433 struct symbol_search
*psr
;
3434 struct symbol_search
*tail
;
3435 struct search_symbols_data datum
;
3437 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3438 CLEANUP_CHAIN is freed only in the case of an error. */
3439 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3440 struct cleanup
*retval_chain
;
3442 gdb_assert (kind
<= TYPES_DOMAIN
);
3444 ourtype
= types
[kind
];
3445 ourtype2
= types2
[kind
];
3446 ourtype3
= types3
[kind
];
3447 ourtype4
= types4
[kind
];
3449 sr
= *matches
= NULL
;
3455 /* Make sure spacing is right for C++ operators.
3456 This is just a courtesy to make the matching less sensitive
3457 to how many spaces the user leaves between 'operator'
3458 and <TYPENAME> or <OPERATOR>. */
3460 char *opname
= operator_chars (regexp
, &opend
);
3465 int fix
= -1; /* -1 means ok; otherwise number of
3468 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3470 /* There should 1 space between 'operator' and 'TYPENAME'. */
3471 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3476 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3477 if (opname
[-1] == ' ')
3480 /* If wrong number of spaces, fix it. */
3483 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3485 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3490 errcode
= regcomp (&datum
.preg
, regexp
,
3491 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3495 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3497 make_cleanup (xfree
, err
);
3498 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3501 make_regfree_cleanup (&datum
.preg
);
3504 /* Search through the partial symtabs *first* for all symbols
3505 matching the regexp. That way we don't have to reproduce all of
3506 the machinery below. */
3508 datum
.nfiles
= nfiles
;
3509 datum
.files
= files
;
3510 ALL_OBJFILES (objfile
)
3513 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3516 : search_symbols_file_matches
),
3517 search_symbols_name_matches
,
3522 retval_chain
= old_chain
;
3524 /* Here, we search through the minimal symbol tables for functions
3525 and variables that match, and force their symbols to be read.
3526 This is in particular necessary for demangled variable names,
3527 which are no longer put into the partial symbol tables.
3528 The symbol will then be found during the scan of symtabs below.
3530 For functions, find_pc_symtab should succeed if we have debug info
3531 for the function, for variables we have to call
3532 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3534 If the lookup fails, set found_misc so that we will rescan to print
3535 any matching symbols without debug info.
3536 We only search the objfile the msymbol came from, we no longer search
3537 all objfiles. In large programs (1000s of shared libs) searching all
3538 objfiles is not worth the pain. */
3540 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3542 ALL_MSYMBOLS (objfile
, msymbol
)
3546 if (msymbol
->created_by_gdb
)
3549 if (MSYMBOL_TYPE (msymbol
) == ourtype
3550 || MSYMBOL_TYPE (msymbol
) == ourtype2
3551 || MSYMBOL_TYPE (msymbol
) == ourtype3
3552 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3555 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3558 /* Note: An important side-effect of these lookup functions
3559 is to expand the symbol table if msymbol is found, for the
3560 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3561 if (kind
== FUNCTIONS_DOMAIN
3562 ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
3563 : (lookup_symbol_in_objfile_from_linkage_name
3564 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3572 ALL_PRIMARY_SYMTABS (objfile
, s
)
3574 bv
= BLOCKVECTOR (s
);
3575 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3577 struct symbol_search
*prevtail
= tail
;
3580 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3581 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3583 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3587 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3588 a substring of symtab_to_fullname as it may contain "./" etc. */
3589 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3590 || ((basenames_may_differ
3591 || file_matches (lbasename (real_symtab
->filename
),
3593 && file_matches (symtab_to_fullname (real_symtab
),
3596 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3598 && ((kind
== VARIABLES_DOMAIN
3599 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3600 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3601 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3602 /* LOC_CONST can be used for more than just enums,
3603 e.g., c++ static const members.
3604 We only want to skip enums here. */
3605 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3606 && TYPE_CODE (SYMBOL_TYPE (sym
))
3608 || (kind
== FUNCTIONS_DOMAIN
3609 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3610 || (kind
== TYPES_DOMAIN
3611 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3614 psr
= (struct symbol_search
*)
3615 xmalloc (sizeof (struct symbol_search
));
3617 psr
->symtab
= real_symtab
;
3619 psr
->msymbol
= NULL
;
3631 if (prevtail
== NULL
)
3633 struct symbol_search dummy
;
3636 tail
= sort_search_symbols (&dummy
, nfound
);
3639 make_cleanup_free_search_symbols (sr
);
3642 tail
= sort_search_symbols (prevtail
, nfound
);
3647 /* If there are no eyes, avoid all contact. I mean, if there are
3648 no debug symbols, then print directly from the msymbol_vector. */
3650 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3652 ALL_MSYMBOLS (objfile
, msymbol
)
3656 if (msymbol
->created_by_gdb
)
3659 if (MSYMBOL_TYPE (msymbol
) == ourtype
3660 || MSYMBOL_TYPE (msymbol
) == ourtype2
3661 || MSYMBOL_TYPE (msymbol
) == ourtype3
3662 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3665 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3668 /* For functions we can do a quick check of whether the
3669 symbol might be found via find_pc_symtab. */
3670 if (kind
!= FUNCTIONS_DOMAIN
3671 || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
)
3673 if (lookup_symbol_in_objfile_from_linkage_name
3674 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3678 psr
= (struct symbol_search
*)
3679 xmalloc (sizeof (struct symbol_search
));
3681 psr
->msymbol
= msymbol
;
3688 make_cleanup_free_search_symbols (sr
);
3700 discard_cleanups (retval_chain
);
3701 do_cleanups (old_chain
);
3705 /* Helper function for symtab_symbol_info, this function uses
3706 the data returned from search_symbols() to print information
3707 regarding the match to gdb_stdout. */
3710 print_symbol_info (enum search_domain kind
,
3711 struct symtab
*s
, struct symbol
*sym
,
3712 int block
, const char *last
)
3714 const char *s_filename
= symtab_to_filename_for_display (s
);
3716 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3718 fputs_filtered ("\nFile ", gdb_stdout
);
3719 fputs_filtered (s_filename
, gdb_stdout
);
3720 fputs_filtered (":\n", gdb_stdout
);
3723 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3724 printf_filtered ("static ");
3726 /* Typedef that is not a C++ class. */
3727 if (kind
== TYPES_DOMAIN
3728 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3729 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3730 /* variable, func, or typedef-that-is-c++-class. */
3731 else if (kind
< TYPES_DOMAIN
3732 || (kind
== TYPES_DOMAIN
3733 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3735 type_print (SYMBOL_TYPE (sym
),
3736 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3737 ? "" : SYMBOL_PRINT_NAME (sym
)),
3740 printf_filtered (";\n");
3744 /* This help function for symtab_symbol_info() prints information
3745 for non-debugging symbols to gdb_stdout. */
3748 print_msymbol_info (struct minimal_symbol
*msymbol
)
3750 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3753 if (gdbarch_addr_bit (gdbarch
) <= 32)
3754 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3755 & (CORE_ADDR
) 0xffffffff,
3758 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3760 printf_filtered ("%s %s\n",
3761 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3764 /* This is the guts of the commands "info functions", "info types", and
3765 "info variables". It calls search_symbols to find all matches and then
3766 print_[m]symbol_info to print out some useful information about the
3770 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3772 static const char * const classnames
[] =
3773 {"variable", "function", "type"};
3774 struct symbol_search
*symbols
;
3775 struct symbol_search
*p
;
3776 struct cleanup
*old_chain
;
3777 const char *last_filename
= NULL
;
3780 gdb_assert (kind
<= TYPES_DOMAIN
);
3782 /* Must make sure that if we're interrupted, symbols gets freed. */
3783 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3784 old_chain
= make_cleanup_free_search_symbols (symbols
);
3787 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3788 classnames
[kind
], regexp
);
3790 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3792 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3796 if (p
->msymbol
!= NULL
)
3800 printf_filtered (_("\nNon-debugging symbols:\n"));
3803 print_msymbol_info (p
->msymbol
);
3807 print_symbol_info (kind
,
3812 last_filename
= symtab_to_filename_for_display (p
->symtab
);
3816 do_cleanups (old_chain
);
3820 variables_info (char *regexp
, int from_tty
)
3822 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3826 functions_info (char *regexp
, int from_tty
)
3828 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3833 types_info (char *regexp
, int from_tty
)
3835 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3838 /* Breakpoint all functions matching regular expression. */
3841 rbreak_command_wrapper (char *regexp
, int from_tty
)
3843 rbreak_command (regexp
, from_tty
);
3846 /* A cleanup function that calls end_rbreak_breakpoints. */
3849 do_end_rbreak_breakpoints (void *ignore
)
3851 end_rbreak_breakpoints ();
3855 rbreak_command (char *regexp
, int from_tty
)
3857 struct symbol_search
*ss
;
3858 struct symbol_search
*p
;
3859 struct cleanup
*old_chain
;
3860 char *string
= NULL
;
3862 char **files
= NULL
, *file_name
;
3867 char *colon
= strchr (regexp
, ':');
3869 if (colon
&& *(colon
+ 1) != ':')
3873 colon_index
= colon
- regexp
;
3874 file_name
= alloca (colon_index
+ 1);
3875 memcpy (file_name
, regexp
, colon_index
);
3876 file_name
[colon_index
--] = 0;
3877 while (isspace (file_name
[colon_index
]))
3878 file_name
[colon_index
--] = 0;
3881 regexp
= skip_spaces (colon
+ 1);
3885 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3886 old_chain
= make_cleanup_free_search_symbols (ss
);
3887 make_cleanup (free_current_contents
, &string
);
3889 start_rbreak_breakpoints ();
3890 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3891 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3893 if (p
->msymbol
== NULL
)
3895 const char *fullname
= symtab_to_fullname (p
->symtab
);
3897 int newlen
= (strlen (fullname
)
3898 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3903 string
= xrealloc (string
, newlen
);
3906 strcpy (string
, fullname
);
3907 strcat (string
, ":'");
3908 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3909 strcat (string
, "'");
3910 break_command (string
, from_tty
);
3911 print_symbol_info (FUNCTIONS_DOMAIN
,
3915 symtab_to_filename_for_display (p
->symtab
));
3919 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3923 string
= xrealloc (string
, newlen
);
3926 strcpy (string
, "'");
3927 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3928 strcat (string
, "'");
3930 break_command (string
, from_tty
);
3931 printf_filtered ("<function, no debug info> %s;\n",
3932 SYMBOL_PRINT_NAME (p
->msymbol
));
3936 do_cleanups (old_chain
);
3940 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3942 Either sym_text[sym_text_len] != '(' and then we search for any
3943 symbol starting with SYM_TEXT text.
3945 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3946 be terminated at that point. Partial symbol tables do not have parameters
3950 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3952 int (*ncmp
) (const char *, const char *, size_t);
3954 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3956 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
3959 if (sym_text
[sym_text_len
] == '(')
3961 /* User searches for `name(someth...'. Require NAME to be terminated.
3962 Normally psymtabs and gdbindex have no parameter types so '\0' will be
3963 present but accept even parameters presence. In this case this
3964 function is in fact strcmp_iw but whitespace skipping is not supported
3965 for tab completion. */
3967 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
3974 /* Free any memory associated with a completion list. */
3977 free_completion_list (VEC (char_ptr
) **list_ptr
)
3982 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
3984 VEC_free (char_ptr
, *list_ptr
);
3987 /* Callback for make_cleanup. */
3990 do_free_completion_list (void *list
)
3992 free_completion_list (list
);
3995 /* Helper routine for make_symbol_completion_list. */
3997 static VEC (char_ptr
) *return_val
;
3999 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4000 completion_list_add_name \
4001 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4003 /* Test to see if the symbol specified by SYMNAME (which is already
4004 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4005 characters. If so, add it to the current completion list. */
4008 completion_list_add_name (const char *symname
,
4009 const char *sym_text
, int sym_text_len
,
4010 const char *text
, const char *word
)
4012 /* Clip symbols that cannot match. */
4013 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4016 /* We have a match for a completion, so add SYMNAME to the current list
4017 of matches. Note that the name is moved to freshly malloc'd space. */
4022 if (word
== sym_text
)
4024 new = xmalloc (strlen (symname
) + 5);
4025 strcpy (new, symname
);
4027 else if (word
> sym_text
)
4029 /* Return some portion of symname. */
4030 new = xmalloc (strlen (symname
) + 5);
4031 strcpy (new, symname
+ (word
- sym_text
));
4035 /* Return some of SYM_TEXT plus symname. */
4036 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4037 strncpy (new, word
, sym_text
- word
);
4038 new[sym_text
- word
] = '\0';
4039 strcat (new, symname
);
4042 VEC_safe_push (char_ptr
, return_val
, new);
4046 /* ObjC: In case we are completing on a selector, look as the msymbol
4047 again and feed all the selectors into the mill. */
4050 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4051 const char *sym_text
, int sym_text_len
,
4052 const char *text
, const char *word
)
4054 static char *tmp
= NULL
;
4055 static unsigned int tmplen
= 0;
4057 const char *method
, *category
, *selector
;
4060 method
= SYMBOL_NATURAL_NAME (msymbol
);
4062 /* Is it a method? */
4063 if ((method
[0] != '-') && (method
[0] != '+'))
4066 if (sym_text
[0] == '[')
4067 /* Complete on shortened method method. */
4068 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4070 while ((strlen (method
) + 1) >= tmplen
)
4076 tmp
= xrealloc (tmp
, tmplen
);
4078 selector
= strchr (method
, ' ');
4079 if (selector
!= NULL
)
4082 category
= strchr (method
, '(');
4084 if ((category
!= NULL
) && (selector
!= NULL
))
4086 memcpy (tmp
, method
, (category
- method
));
4087 tmp
[category
- method
] = ' ';
4088 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4089 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4090 if (sym_text
[0] == '[')
4091 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4094 if (selector
!= NULL
)
4096 /* Complete on selector only. */
4097 strcpy (tmp
, selector
);
4098 tmp2
= strchr (tmp
, ']');
4102 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4106 /* Break the non-quoted text based on the characters which are in
4107 symbols. FIXME: This should probably be language-specific. */
4110 language_search_unquoted_string (const char *text
, const char *p
)
4112 for (; p
> text
; --p
)
4114 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4118 if ((current_language
->la_language
== language_objc
))
4120 if (p
[-1] == ':') /* Might be part of a method name. */
4122 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4123 p
-= 2; /* Beginning of a method name. */
4124 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4125 { /* Might be part of a method name. */
4128 /* Seeing a ' ' or a '(' is not conclusive evidence
4129 that we are in the middle of a method name. However,
4130 finding "-[" or "+[" should be pretty un-ambiguous.
4131 Unfortunately we have to find it now to decide. */
4134 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4135 t
[-1] == ' ' || t
[-1] == ':' ||
4136 t
[-1] == '(' || t
[-1] == ')')
4141 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4142 p
= t
- 2; /* Method name detected. */
4143 /* Else we leave with p unchanged. */
4153 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4154 int sym_text_len
, const char *text
,
4157 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4159 struct type
*t
= SYMBOL_TYPE (sym
);
4160 enum type_code c
= TYPE_CODE (t
);
4163 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4164 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4165 if (TYPE_FIELD_NAME (t
, j
))
4166 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4167 sym_text
, sym_text_len
, text
, word
);
4171 /* Type of the user_data argument passed to add_macro_name or
4172 expand_partial_symbol_name. The contents are simply whatever is
4173 needed by completion_list_add_name. */
4174 struct add_name_data
4176 const char *sym_text
;
4182 /* A callback used with macro_for_each and macro_for_each_in_scope.
4183 This adds a macro's name to the current completion list. */
4186 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4187 struct macro_source_file
*ignore2
, int ignore3
,
4190 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4192 completion_list_add_name ((char *) name
,
4193 datum
->sym_text
, datum
->sym_text_len
,
4194 datum
->text
, datum
->word
);
4197 /* A callback for expand_partial_symbol_names. */
4200 expand_partial_symbol_name (const char *name
, void *user_data
)
4202 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4204 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4208 default_make_symbol_completion_list_break_on (const char *text
,
4210 const char *break_on
,
4211 enum type_code code
)
4213 /* Problem: All of the symbols have to be copied because readline
4214 frees them. I'm not going to worry about this; hopefully there
4215 won't be that many. */
4219 struct minimal_symbol
*msymbol
;
4220 struct objfile
*objfile
;
4222 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4223 struct block_iterator iter
;
4224 /* The symbol we are completing on. Points in same buffer as text. */
4225 const char *sym_text
;
4226 /* Length of sym_text. */
4228 struct add_name_data datum
;
4229 struct cleanup
*back_to
;
4231 /* Now look for the symbol we are supposed to complete on. */
4235 const char *quote_pos
= NULL
;
4237 /* First see if this is a quoted string. */
4239 for (p
= text
; *p
!= '\0'; ++p
)
4241 if (quote_found
!= '\0')
4243 if (*p
== quote_found
)
4244 /* Found close quote. */
4246 else if (*p
== '\\' && p
[1] == quote_found
)
4247 /* A backslash followed by the quote character
4248 doesn't end the string. */
4251 else if (*p
== '\'' || *p
== '"')
4257 if (quote_found
== '\'')
4258 /* A string within single quotes can be a symbol, so complete on it. */
4259 sym_text
= quote_pos
+ 1;
4260 else if (quote_found
== '"')
4261 /* A double-quoted string is never a symbol, nor does it make sense
4262 to complete it any other way. */
4268 /* It is not a quoted string. Break it based on the characters
4269 which are in symbols. */
4272 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4273 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4282 sym_text_len
= strlen (sym_text
);
4284 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4286 if (current_language
->la_language
== language_cplus
4287 || current_language
->la_language
== language_java
4288 || current_language
->la_language
== language_fortran
)
4290 /* These languages may have parameters entered by user but they are never
4291 present in the partial symbol tables. */
4293 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4296 sym_text_len
= cs
- sym_text
;
4298 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4301 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4303 datum
.sym_text
= sym_text
;
4304 datum
.sym_text_len
= sym_text_len
;
4308 /* Look through the partial symtabs for all symbols which begin
4309 by matching SYM_TEXT. Expand all CUs that you find to the list.
4310 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4311 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4313 /* At this point scan through the misc symbol vectors and add each
4314 symbol you find to the list. Eventually we want to ignore
4315 anything that isn't a text symbol (everything else will be
4316 handled by the psymtab code above). */
4318 if (code
== TYPE_CODE_UNDEF
)
4320 ALL_MSYMBOLS (objfile
, msymbol
)
4323 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4326 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4331 /* Search upwards from currently selected frame (so that we can
4332 complete on local vars). Also catch fields of types defined in
4333 this places which match our text string. Only complete on types
4334 visible from current context. */
4336 b
= get_selected_block (0);
4337 surrounding_static_block
= block_static_block (b
);
4338 surrounding_global_block
= block_global_block (b
);
4339 if (surrounding_static_block
!= NULL
)
4340 while (b
!= surrounding_static_block
)
4344 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4346 if (code
== TYPE_CODE_UNDEF
)
4348 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4350 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4353 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4354 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4355 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4359 /* Stop when we encounter an enclosing function. Do not stop for
4360 non-inlined functions - the locals of the enclosing function
4361 are in scope for a nested function. */
4362 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4364 b
= BLOCK_SUPERBLOCK (b
);
4367 /* Add fields from the file's types; symbols will be added below. */
4369 if (code
== TYPE_CODE_UNDEF
)
4371 if (surrounding_static_block
!= NULL
)
4372 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4373 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4375 if (surrounding_global_block
!= NULL
)
4376 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4377 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4380 /* Go through the symtabs and check the externs and statics for
4381 symbols which match. */
4383 ALL_PRIMARY_SYMTABS (objfile
, s
)
4386 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4387 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4389 if (code
== TYPE_CODE_UNDEF
4390 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4391 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4392 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4396 ALL_PRIMARY_SYMTABS (objfile
, s
)
4399 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4400 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4402 if (code
== TYPE_CODE_UNDEF
4403 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4404 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4405 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4409 /* Skip macros if we are completing a struct tag -- arguable but
4410 usually what is expected. */
4411 if (current_language
->la_macro_expansion
== macro_expansion_c
4412 && code
== TYPE_CODE_UNDEF
)
4414 struct macro_scope
*scope
;
4416 /* Add any macros visible in the default scope. Note that this
4417 may yield the occasional wrong result, because an expression
4418 might be evaluated in a scope other than the default. For
4419 example, if the user types "break file:line if <TAB>", the
4420 resulting expression will be evaluated at "file:line" -- but
4421 at there does not seem to be a way to detect this at
4423 scope
= default_macro_scope ();
4426 macro_for_each_in_scope (scope
->file
, scope
->line
,
4427 add_macro_name
, &datum
);
4431 /* User-defined macros are always visible. */
4432 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4435 discard_cleanups (back_to
);
4436 return (return_val
);
4440 default_make_symbol_completion_list (const char *text
, const char *word
,
4441 enum type_code code
)
4443 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4446 /* Return a vector of all symbols (regardless of class) which begin by
4447 matching TEXT. If the answer is no symbols, then the return value
4451 make_symbol_completion_list (const char *text
, const char *word
)
4453 return current_language
->la_make_symbol_completion_list (text
, word
,
4457 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4458 symbols whose type code is CODE. */
4461 make_symbol_completion_type (const char *text
, const char *word
,
4462 enum type_code code
)
4464 gdb_assert (code
== TYPE_CODE_UNION
4465 || code
== TYPE_CODE_STRUCT
4466 || code
== TYPE_CODE_CLASS
4467 || code
== TYPE_CODE_ENUM
);
4468 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4471 /* Like make_symbol_completion_list, but suitable for use as a
4472 completion function. */
4475 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4476 const char *text
, const char *word
)
4478 return make_symbol_completion_list (text
, word
);
4481 /* Like make_symbol_completion_list, but returns a list of symbols
4482 defined in a source file FILE. */
4485 make_file_symbol_completion_list (const char *text
, const char *word
,
4486 const char *srcfile
)
4491 struct block_iterator iter
;
4492 /* The symbol we are completing on. Points in same buffer as text. */
4493 const char *sym_text
;
4494 /* Length of sym_text. */
4497 /* Now look for the symbol we are supposed to complete on.
4498 FIXME: This should be language-specific. */
4502 const char *quote_pos
= NULL
;
4504 /* First see if this is a quoted string. */
4506 for (p
= text
; *p
!= '\0'; ++p
)
4508 if (quote_found
!= '\0')
4510 if (*p
== quote_found
)
4511 /* Found close quote. */
4513 else if (*p
== '\\' && p
[1] == quote_found
)
4514 /* A backslash followed by the quote character
4515 doesn't end the string. */
4518 else if (*p
== '\'' || *p
== '"')
4524 if (quote_found
== '\'')
4525 /* A string within single quotes can be a symbol, so complete on it. */
4526 sym_text
= quote_pos
+ 1;
4527 else if (quote_found
== '"')
4528 /* A double-quoted string is never a symbol, nor does it make sense
4529 to complete it any other way. */
4535 /* Not a quoted string. */
4536 sym_text
= language_search_unquoted_string (text
, p
);
4540 sym_text_len
= strlen (sym_text
);
4544 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4546 s
= lookup_symtab (srcfile
);
4549 /* Maybe they typed the file with leading directories, while the
4550 symbol tables record only its basename. */
4551 const char *tail
= lbasename (srcfile
);
4554 s
= lookup_symtab (tail
);
4557 /* If we have no symtab for that file, return an empty list. */
4559 return (return_val
);
4561 /* Go through this symtab and check the externs and statics for
4562 symbols which match. */
4564 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4565 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4567 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4570 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4571 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4573 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4576 return (return_val
);
4579 /* A helper function for make_source_files_completion_list. It adds
4580 another file name to a list of possible completions, growing the
4581 list as necessary. */
4584 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4585 VEC (char_ptr
) **list
)
4588 size_t fnlen
= strlen (fname
);
4592 /* Return exactly fname. */
4593 new = xmalloc (fnlen
+ 5);
4594 strcpy (new, fname
);
4596 else if (word
> text
)
4598 /* Return some portion of fname. */
4599 new = xmalloc (fnlen
+ 5);
4600 strcpy (new, fname
+ (word
- text
));
4604 /* Return some of TEXT plus fname. */
4605 new = xmalloc (fnlen
+ (text
- word
) + 5);
4606 strncpy (new, word
, text
- word
);
4607 new[text
- word
] = '\0';
4608 strcat (new, fname
);
4610 VEC_safe_push (char_ptr
, *list
, new);
4614 not_interesting_fname (const char *fname
)
4616 static const char *illegal_aliens
[] = {
4617 "_globals_", /* inserted by coff_symtab_read */
4622 for (i
= 0; illegal_aliens
[i
]; i
++)
4624 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4630 /* An object of this type is passed as the user_data argument to
4631 map_partial_symbol_filenames. */
4632 struct add_partial_filename_data
4634 struct filename_seen_cache
*filename_seen_cache
;
4638 VEC (char_ptr
) **list
;
4641 /* A callback for map_partial_symbol_filenames. */
4644 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4647 struct add_partial_filename_data
*data
= user_data
;
4649 if (not_interesting_fname (filename
))
4651 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4652 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4654 /* This file matches for a completion; add it to the
4655 current list of matches. */
4656 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4660 const char *base_name
= lbasename (filename
);
4662 if (base_name
!= filename
4663 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4664 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4665 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4669 /* Return a vector of all source files whose names begin with matching
4670 TEXT. The file names are looked up in the symbol tables of this
4671 program. If the answer is no matchess, then the return value is
4675 make_source_files_completion_list (const char *text
, const char *word
)
4678 struct objfile
*objfile
;
4679 size_t text_len
= strlen (text
);
4680 VEC (char_ptr
) *list
= NULL
;
4681 const char *base_name
;
4682 struct add_partial_filename_data datum
;
4683 struct filename_seen_cache
*filename_seen_cache
;
4684 struct cleanup
*back_to
, *cache_cleanup
;
4686 if (!have_full_symbols () && !have_partial_symbols ())
4689 back_to
= make_cleanup (do_free_completion_list
, &list
);
4691 filename_seen_cache
= create_filename_seen_cache ();
4692 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4693 filename_seen_cache
);
4695 ALL_SYMTABS (objfile
, s
)
4697 if (not_interesting_fname (s
->filename
))
4699 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4700 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4702 /* This file matches for a completion; add it to the current
4704 add_filename_to_list (s
->filename
, text
, word
, &list
);
4708 /* NOTE: We allow the user to type a base name when the
4709 debug info records leading directories, but not the other
4710 way around. This is what subroutines of breakpoint
4711 command do when they parse file names. */
4712 base_name
= lbasename (s
->filename
);
4713 if (base_name
!= s
->filename
4714 && !filename_seen (filename_seen_cache
, base_name
, 1)
4715 && filename_ncmp (base_name
, text
, text_len
) == 0)
4716 add_filename_to_list (base_name
, text
, word
, &list
);
4720 datum
.filename_seen_cache
= filename_seen_cache
;
4723 datum
.text_len
= text_len
;
4725 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4726 0 /*need_fullname*/);
4728 do_cleanups (cache_cleanup
);
4729 discard_cleanups (back_to
);
4734 /* Determine if PC is in the prologue of a function. The prologue is the area
4735 between the first instruction of a function, and the first executable line.
4736 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4738 If non-zero, func_start is where we think the prologue starts, possibly
4739 by previous examination of symbol table information. */
4742 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4744 struct symtab_and_line sal
;
4745 CORE_ADDR func_addr
, func_end
;
4747 /* We have several sources of information we can consult to figure
4749 - Compilers usually emit line number info that marks the prologue
4750 as its own "source line". So the ending address of that "line"
4751 is the end of the prologue. If available, this is the most
4753 - The minimal symbols and partial symbols, which can usually tell
4754 us the starting and ending addresses of a function.
4755 - If we know the function's start address, we can call the
4756 architecture-defined gdbarch_skip_prologue function to analyze the
4757 instruction stream and guess where the prologue ends.
4758 - Our `func_start' argument; if non-zero, this is the caller's
4759 best guess as to the function's entry point. At the time of
4760 this writing, handle_inferior_event doesn't get this right, so
4761 it should be our last resort. */
4763 /* Consult the partial symbol table, to find which function
4765 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4767 CORE_ADDR prologue_end
;
4769 /* We don't even have minsym information, so fall back to using
4770 func_start, if given. */
4772 return 1; /* We *might* be in a prologue. */
4774 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4776 return func_start
<= pc
&& pc
< prologue_end
;
4779 /* If we have line number information for the function, that's
4780 usually pretty reliable. */
4781 sal
= find_pc_line (func_addr
, 0);
4783 /* Now sal describes the source line at the function's entry point,
4784 which (by convention) is the prologue. The end of that "line",
4785 sal.end, is the end of the prologue.
4787 Note that, for functions whose source code is all on a single
4788 line, the line number information doesn't always end up this way.
4789 So we must verify that our purported end-of-prologue address is
4790 *within* the function, not at its start or end. */
4792 || sal
.end
<= func_addr
4793 || func_end
<= sal
.end
)
4795 /* We don't have any good line number info, so use the minsym
4796 information, together with the architecture-specific prologue
4798 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4800 return func_addr
<= pc
&& pc
< prologue_end
;
4803 /* We have line number info, and it looks good. */
4804 return func_addr
<= pc
&& pc
< sal
.end
;
4807 /* Given PC at the function's start address, attempt to find the
4808 prologue end using SAL information. Return zero if the skip fails.
4810 A non-optimized prologue traditionally has one SAL for the function
4811 and a second for the function body. A single line function has
4812 them both pointing at the same line.
4814 An optimized prologue is similar but the prologue may contain
4815 instructions (SALs) from the instruction body. Need to skip those
4816 while not getting into the function body.
4818 The functions end point and an increasing SAL line are used as
4819 indicators of the prologue's endpoint.
4821 This code is based on the function refine_prologue_limit
4825 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4827 struct symtab_and_line prologue_sal
;
4832 /* Get an initial range for the function. */
4833 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4834 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4836 prologue_sal
= find_pc_line (start_pc
, 0);
4837 if (prologue_sal
.line
!= 0)
4839 /* For languages other than assembly, treat two consecutive line
4840 entries at the same address as a zero-instruction prologue.
4841 The GNU assembler emits separate line notes for each instruction
4842 in a multi-instruction macro, but compilers generally will not
4844 if (prologue_sal
.symtab
->language
!= language_asm
)
4846 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4849 /* Skip any earlier lines, and any end-of-sequence marker
4850 from a previous function. */
4851 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4852 || linetable
->item
[idx
].line
== 0)
4855 if (idx
+1 < linetable
->nitems
4856 && linetable
->item
[idx
+1].line
!= 0
4857 && linetable
->item
[idx
+1].pc
== start_pc
)
4861 /* If there is only one sal that covers the entire function,
4862 then it is probably a single line function, like
4864 if (prologue_sal
.end
>= end_pc
)
4867 while (prologue_sal
.end
< end_pc
)
4869 struct symtab_and_line sal
;
4871 sal
= find_pc_line (prologue_sal
.end
, 0);
4874 /* Assume that a consecutive SAL for the same (or larger)
4875 line mark the prologue -> body transition. */
4876 if (sal
.line
>= prologue_sal
.line
)
4878 /* Likewise if we are in a different symtab altogether
4879 (e.g. within a file included via #include). */
4880 if (sal
.symtab
!= prologue_sal
.symtab
)
4883 /* The line number is smaller. Check that it's from the
4884 same function, not something inlined. If it's inlined,
4885 then there is no point comparing the line numbers. */
4886 bl
= block_for_pc (prologue_sal
.end
);
4889 if (block_inlined_p (bl
))
4891 if (BLOCK_FUNCTION (bl
))
4896 bl
= BLOCK_SUPERBLOCK (bl
);
4901 /* The case in which compiler's optimizer/scheduler has
4902 moved instructions into the prologue. We look ahead in
4903 the function looking for address ranges whose
4904 corresponding line number is less the first one that we
4905 found for the function. This is more conservative then
4906 refine_prologue_limit which scans a large number of SALs
4907 looking for any in the prologue. */
4912 if (prologue_sal
.end
< end_pc
)
4913 /* Return the end of this line, or zero if we could not find a
4915 return prologue_sal
.end
;
4917 /* Don't return END_PC, which is past the end of the function. */
4918 return prologue_sal
.pc
;
4922 static char *name_of_main
;
4923 enum language language_of_main
= language_unknown
;
4926 set_main_name (const char *name
)
4928 if (name_of_main
!= NULL
)
4930 xfree (name_of_main
);
4931 name_of_main
= NULL
;
4932 language_of_main
= language_unknown
;
4936 name_of_main
= xstrdup (name
);
4937 language_of_main
= language_unknown
;
4941 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4945 find_main_name (void)
4947 const char *new_main_name
;
4949 /* Try to see if the main procedure is in Ada. */
4950 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4951 be to add a new method in the language vector, and call this
4952 method for each language until one of them returns a non-empty
4953 name. This would allow us to remove this hard-coded call to
4954 an Ada function. It is not clear that this is a better approach
4955 at this point, because all methods need to be written in a way
4956 such that false positives never be returned. For instance, it is
4957 important that a method does not return a wrong name for the main
4958 procedure if the main procedure is actually written in a different
4959 language. It is easy to guaranty this with Ada, since we use a
4960 special symbol generated only when the main in Ada to find the name
4961 of the main procedure. It is difficult however to see how this can
4962 be guarantied for languages such as C, for instance. This suggests
4963 that order of call for these methods becomes important, which means
4964 a more complicated approach. */
4965 new_main_name
= ada_main_name ();
4966 if (new_main_name
!= NULL
)
4968 set_main_name (new_main_name
);
4972 new_main_name
= go_main_name ();
4973 if (new_main_name
!= NULL
)
4975 set_main_name (new_main_name
);
4979 new_main_name
= pascal_main_name ();
4980 if (new_main_name
!= NULL
)
4982 set_main_name (new_main_name
);
4986 /* The languages above didn't identify the name of the main procedure.
4987 Fallback to "main". */
4988 set_main_name ("main");
4994 if (name_of_main
== NULL
)
4997 return name_of_main
;
5000 /* Handle ``executable_changed'' events for the symtab module. */
5003 symtab_observer_executable_changed (void)
5005 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5006 set_main_name (NULL
);
5009 /* Return 1 if the supplied producer string matches the ARM RealView
5010 compiler (armcc). */
5013 producer_is_realview (const char *producer
)
5015 static const char *const arm_idents
[] = {
5016 "ARM C Compiler, ADS",
5017 "Thumb C Compiler, ADS",
5018 "ARM C++ Compiler, ADS",
5019 "Thumb C++ Compiler, ADS",
5020 "ARM/Thumb C/C++ Compiler, RVCT",
5021 "ARM C/C++ Compiler, RVCT"
5025 if (producer
== NULL
)
5028 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5029 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5037 /* The next index to hand out in response to a registration request. */
5039 static int next_aclass_value
= LOC_FINAL_VALUE
;
5041 /* The maximum number of "aclass" registrations we support. This is
5042 constant for convenience. */
5043 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5045 /* The objects representing the various "aclass" values. The elements
5046 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5047 elements are those registered at gdb initialization time. */
5049 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5051 /* The globally visible pointer. This is separate from 'symbol_impl'
5052 so that it can be const. */
5054 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5056 /* Make sure we saved enough room in struct symbol. */
5058 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5060 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5061 is the ops vector associated with this index. This returns the new
5062 index, which should be used as the aclass_index field for symbols
5066 register_symbol_computed_impl (enum address_class aclass
,
5067 const struct symbol_computed_ops
*ops
)
5069 int result
= next_aclass_value
++;
5071 gdb_assert (aclass
== LOC_COMPUTED
);
5072 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5073 symbol_impl
[result
].aclass
= aclass
;
5074 symbol_impl
[result
].ops_computed
= ops
;
5076 /* Sanity check OPS. */
5077 gdb_assert (ops
!= NULL
);
5078 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5079 gdb_assert (ops
->describe_location
!= NULL
);
5080 gdb_assert (ops
->read_needs_frame
!= NULL
);
5081 gdb_assert (ops
->read_variable
!= NULL
);
5086 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5087 OPS is the ops vector associated with this index. This returns the
5088 new index, which should be used as the aclass_index field for symbols
5092 register_symbol_block_impl (enum address_class aclass
,
5093 const struct symbol_block_ops
*ops
)
5095 int result
= next_aclass_value
++;
5097 gdb_assert (aclass
== LOC_BLOCK
);
5098 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5099 symbol_impl
[result
].aclass
= aclass
;
5100 symbol_impl
[result
].ops_block
= ops
;
5102 /* Sanity check OPS. */
5103 gdb_assert (ops
!= NULL
);
5104 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5109 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5110 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5111 this index. This returns the new index, which should be used as
5112 the aclass_index field for symbols of this type. */
5115 register_symbol_register_impl (enum address_class aclass
,
5116 const struct symbol_register_ops
*ops
)
5118 int result
= next_aclass_value
++;
5120 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5121 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5122 symbol_impl
[result
].aclass
= aclass
;
5123 symbol_impl
[result
].ops_register
= ops
;
5128 /* Initialize elements of 'symbol_impl' for the constants in enum
5132 initialize_ordinary_address_classes (void)
5136 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5137 symbol_impl
[i
].aclass
= i
;
5142 /* Initialize the symbol SYM. */
5145 initialize_symbol (struct symbol
*sym
)
5147 memset (sym
, 0, sizeof (*sym
));
5150 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5154 allocate_symbol (struct objfile
*objfile
)
5156 struct symbol
*result
;
5158 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5163 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5166 struct template_symbol
*
5167 allocate_template_symbol (struct objfile
*objfile
)
5169 struct template_symbol
*result
;
5171 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5179 _initialize_symtab (void)
5181 initialize_ordinary_address_classes ();
5183 add_info ("variables", variables_info
, _("\
5184 All global and static variable names, or those matching REGEXP."));
5186 add_com ("whereis", class_info
, variables_info
, _("\
5187 All global and static variable names, or those matching REGEXP."));
5189 add_info ("functions", functions_info
,
5190 _("All function names, or those matching REGEXP."));
5192 /* FIXME: This command has at least the following problems:
5193 1. It prints builtin types (in a very strange and confusing fashion).
5194 2. It doesn't print right, e.g. with
5195 typedef struct foo *FOO
5196 type_print prints "FOO" when we want to make it (in this situation)
5197 print "struct foo *".
5198 I also think "ptype" or "whatis" is more likely to be useful (but if
5199 there is much disagreement "info types" can be fixed). */
5200 add_info ("types", types_info
,
5201 _("All type names, or those matching REGEXP."));
5203 add_info ("sources", sources_info
,
5204 _("Source files in the program."));
5206 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5207 _("Set a breakpoint for all functions matching REGEXP."));
5211 add_com ("lf", class_info
, sources_info
,
5212 _("Source files in the program"));
5213 add_com ("lg", class_info
, variables_info
, _("\
5214 All global and static variable names, or those matching REGEXP."));
5217 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5218 multiple_symbols_modes
, &multiple_symbols_mode
,
5220 Set the debugger behavior when more than one symbol are possible matches\n\
5221 in an expression."), _("\
5222 Show how the debugger handles ambiguities in expressions."), _("\
5223 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5224 NULL
, NULL
, &setlist
, &showlist
);
5226 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5227 &basenames_may_differ
, _("\
5228 Set whether a source file may have multiple base names."), _("\
5229 Show whether a source file may have multiple base names."), _("\
5230 (A \"base name\" is the name of a file with the directory part removed.\n\
5231 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5232 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5233 before comparing them. Canonicalization is an expensive operation,\n\
5234 but it allows the same file be known by more than one base name.\n\
5235 If not set (the default), all source files are assumed to have just\n\
5236 one base name, and gdb will do file name comparisons more efficiently."),
5238 &setlist
, &showlist
);
5240 add_setshow_boolean_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5241 _("Set debugging of symbol table creation."),
5242 _("Show debugging of symbol table creation."), _("\
5243 When enabled, debugging messages are printed when building symbol tables."),
5246 &setdebuglist
, &showdebuglist
);
5248 observer_attach_executable_changed (symtab_observer_executable_changed
);