1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2004, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "call-cmds.h"
31 #include "gdb_regex.h"
32 #include "expression.h"
38 #include "filenames.h" /* for FILENAME_CMP */
39 #include "objc-lang.h"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
58 #include "cp-support.h"
60 #include "gdb_assert.h"
63 #include "macroscope.h"
67 /* Prototypes for local functions */
69 static void rbreak_command (char *, int);
71 static void types_info (char *, int);
73 static void functions_info (char *, int);
75 static void variables_info (char *, int);
77 static void sources_info (char *, int);
79 static void output_source_filename (const char *, int *);
81 static int find_line_common (struct linetable
*, int, int *, int);
83 static struct symbol
*lookup_symbol_aux (const char *name
,
84 const struct block
*block
,
85 const domain_enum domain
,
86 enum language language
,
87 int *is_a_field_of_this
);
90 struct symbol
*lookup_symbol_aux_local (const char *name
,
91 const struct block
*block
,
92 const domain_enum domain
,
93 enum language language
);
96 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
98 const domain_enum domain
,
99 struct objfile
*exclude_objfile
);
102 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
105 const domain_enum domain
);
107 static void print_msymbol_info (struct minimal_symbol
*);
109 void _initialize_symtab (void);
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). SEARCH_LEN is the length of
151 SEARCH_NAME. We assume that SEARCH_NAME is a relative path.
152 Returns true if they match, false otherwise. */
155 compare_filenames_for_search (const char *filename
, const char *search_name
,
158 int len
= strlen (filename
);
160 if (len
< search_len
)
163 /* The tail of FILENAME must match. */
164 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
167 /* Either the names must completely match, or the character
168 preceding the trailing SEARCH_NAME segment of FILENAME must be a
169 directory separator. */
170 return (len
== search_len
171 || IS_DIR_SEPARATOR (filename
[len
- search_len
- 1])
172 || (HAS_DRIVE_SPEC (filename
)
173 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
176 /* Check for a symtab of a specific name by searching some symtabs.
177 This is a helper function for callbacks of iterate_over_symtabs.
179 The return value, NAME, FULL_PATH, REAL_PATH, CALLBACK, and DATA
180 are identical to the `map_symtabs_matching_filename' method of
181 quick_symbol_functions.
183 FIRST and AFTER_LAST indicate the range of symtabs to search.
184 AFTER_LAST is one past the last symtab to search; NULL means to
185 search until the end of the list. */
188 iterate_over_some_symtabs (const char *name
,
189 const char *full_path
,
190 const char *real_path
,
191 int (*callback
) (struct symtab
*symtab
,
194 struct symtab
*first
,
195 struct symtab
*after_last
)
197 struct symtab
*s
= NULL
;
198 const char* base_name
= lbasename (name
);
199 int name_len
= strlen (name
);
200 int is_abs
= IS_ABSOLUTE_PATH (name
);
202 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
204 /* Exact match is always ok. */
205 if (FILENAME_CMP (name
, s
->filename
) == 0)
207 if (callback (s
, data
))
211 if (!is_abs
&& compare_filenames_for_search (s
->filename
, name
, name_len
))
213 if (callback (s
, data
))
217 /* Before we invoke realpath, which can get expensive when many
218 files are involved, do a quick comparison of the basenames. */
219 if (! basenames_may_differ
220 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
223 /* If the user gave us an absolute path, try to find the file in
224 this symtab and use its absolute path. */
226 if (full_path
!= NULL
)
228 const char *fp
= symtab_to_fullname (s
);
230 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
232 if (callback (s
, data
))
236 if (fp
!= NULL
&& !is_abs
&& compare_filenames_for_search (fp
, name
,
239 if (callback (s
, data
))
244 if (real_path
!= NULL
)
246 char *fullname
= symtab_to_fullname (s
);
248 if (fullname
!= NULL
)
250 char *rp
= gdb_realpath (fullname
);
252 make_cleanup (xfree
, rp
);
253 if (FILENAME_CMP (real_path
, rp
) == 0)
255 if (callback (s
, data
))
259 if (!is_abs
&& compare_filenames_for_search (rp
, name
, name_len
))
261 if (callback (s
, data
))
271 /* Check for a symtab of a specific name; first in symtabs, then in
272 psymtabs. *If* there is no '/' in the name, a match after a '/'
273 in the symtab filename will also work.
275 Calls CALLBACK with each symtab that is found and with the supplied
276 DATA. If CALLBACK returns true, the search stops. */
279 iterate_over_symtabs (const char *name
,
280 int (*callback
) (struct symtab
*symtab
,
284 struct symtab
*s
= NULL
;
285 struct objfile
*objfile
;
286 char *real_path
= NULL
;
287 char *full_path
= NULL
;
288 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
290 /* Here we are interested in canonicalizing an absolute path, not
291 absolutizing a relative path. */
292 if (IS_ABSOLUTE_PATH (name
))
294 full_path
= xfullpath (name
);
295 make_cleanup (xfree
, full_path
);
296 real_path
= gdb_realpath (name
);
297 make_cleanup (xfree
, real_path
);
300 ALL_OBJFILES (objfile
)
302 if (iterate_over_some_symtabs (name
, full_path
, real_path
, callback
, data
,
303 objfile
->symtabs
, NULL
))
305 do_cleanups (cleanups
);
310 /* Same search rules as above apply here, but now we look thru the
313 ALL_OBJFILES (objfile
)
316 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
323 do_cleanups (cleanups
);
328 do_cleanups (cleanups
);
331 /* The callback function used by lookup_symtab. */
334 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
336 struct symtab
**result_ptr
= data
;
338 *result_ptr
= symtab
;
342 /* A wrapper for iterate_over_symtabs that returns the first matching
346 lookup_symtab (const char *name
)
348 struct symtab
*result
= NULL
;
350 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
355 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
356 full method name, which consist of the class name (from T), the unadorned
357 method name from METHOD_ID, and the signature for the specific overload,
358 specified by SIGNATURE_ID. Note that this function is g++ specific. */
361 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
363 int mangled_name_len
;
365 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
366 struct fn_field
*method
= &f
[signature_id
];
367 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
368 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
369 const char *newname
= type_name_no_tag (type
);
371 /* Does the form of physname indicate that it is the full mangled name
372 of a constructor (not just the args)? */
373 int is_full_physname_constructor
;
376 int is_destructor
= is_destructor_name (physname
);
377 /* Need a new type prefix. */
378 char *const_prefix
= method
->is_const
? "C" : "";
379 char *volatile_prefix
= method
->is_volatile
? "V" : "";
381 int len
= (newname
== NULL
? 0 : strlen (newname
));
383 /* Nothing to do if physname already contains a fully mangled v3 abi name
384 or an operator name. */
385 if ((physname
[0] == '_' && physname
[1] == 'Z')
386 || is_operator_name (field_name
))
387 return xstrdup (physname
);
389 is_full_physname_constructor
= is_constructor_name (physname
);
391 is_constructor
= is_full_physname_constructor
392 || (newname
&& strcmp (field_name
, newname
) == 0);
395 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
397 if (is_destructor
|| is_full_physname_constructor
)
399 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
400 strcpy (mangled_name
, physname
);
406 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
408 else if (physname
[0] == 't' || physname
[0] == 'Q')
410 /* The physname for template and qualified methods already includes
412 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
418 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
420 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
421 + strlen (buf
) + len
+ strlen (physname
) + 1);
423 mangled_name
= (char *) xmalloc (mangled_name_len
);
425 mangled_name
[0] = '\0';
427 strcpy (mangled_name
, field_name
);
429 strcat (mangled_name
, buf
);
430 /* If the class doesn't have a name, i.e. newname NULL, then we just
431 mangle it using 0 for the length of the class. Thus it gets mangled
432 as something starting with `::' rather than `classname::'. */
434 strcat (mangled_name
, newname
);
436 strcat (mangled_name
, physname
);
437 return (mangled_name
);
440 /* Initialize the cplus_specific structure. 'cplus_specific' should
441 only be allocated for use with cplus symbols. */
444 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
445 struct objfile
*objfile
)
447 /* A language_specific structure should not have been previously
449 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
450 gdb_assert (objfile
!= NULL
);
452 gsymbol
->language_specific
.cplus_specific
=
453 OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct cplus_specific
);
456 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
457 correctly allocated. For C++ symbols a cplus_specific struct is
458 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
459 OBJFILE can be NULL. */
462 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
464 struct objfile
*objfile
)
466 if (gsymbol
->language
== language_cplus
)
468 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
469 symbol_init_cplus_specific (gsymbol
, objfile
);
471 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
474 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
477 /* Return the demangled name of GSYMBOL. */
480 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
482 if (gsymbol
->language
== language_cplus
)
484 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
485 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
490 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
494 /* Initialize the language dependent portion of a symbol
495 depending upon the language for the symbol. */
498 symbol_set_language (struct general_symbol_info
*gsymbol
,
499 enum language language
)
501 gsymbol
->language
= language
;
502 if (gsymbol
->language
== language_d
503 || gsymbol
->language
== language_go
504 || gsymbol
->language
== language_java
505 || gsymbol
->language
== language_objc
506 || gsymbol
->language
== language_fortran
)
508 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
510 else if (gsymbol
->language
== language_cplus
)
511 gsymbol
->language_specific
.cplus_specific
= NULL
;
514 memset (&gsymbol
->language_specific
, 0,
515 sizeof (gsymbol
->language_specific
));
519 /* Functions to initialize a symbol's mangled name. */
521 /* Objects of this type are stored in the demangled name hash table. */
522 struct demangled_name_entry
528 /* Hash function for the demangled name hash. */
531 hash_demangled_name_entry (const void *data
)
533 const struct demangled_name_entry
*e
= data
;
535 return htab_hash_string (e
->mangled
);
538 /* Equality function for the demangled name hash. */
541 eq_demangled_name_entry (const void *a
, const void *b
)
543 const struct demangled_name_entry
*da
= a
;
544 const struct demangled_name_entry
*db
= b
;
546 return strcmp (da
->mangled
, db
->mangled
) == 0;
549 /* Create the hash table used for demangled names. Each hash entry is
550 a pair of strings; one for the mangled name and one for the demangled
551 name. The entry is hashed via just the mangled name. */
554 create_demangled_names_hash (struct objfile
*objfile
)
556 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
557 The hash table code will round this up to the next prime number.
558 Choosing a much larger table size wastes memory, and saves only about
559 1% in symbol reading. */
561 objfile
->demangled_names_hash
= htab_create_alloc
562 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
563 NULL
, xcalloc
, xfree
);
566 /* Try to determine the demangled name for a symbol, based on the
567 language of that symbol. If the language is set to language_auto,
568 it will attempt to find any demangling algorithm that works and
569 then set the language appropriately. The returned name is allocated
570 by the demangler and should be xfree'd. */
573 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
576 char *demangled
= NULL
;
578 if (gsymbol
->language
== language_unknown
)
579 gsymbol
->language
= language_auto
;
581 if (gsymbol
->language
== language_objc
582 || gsymbol
->language
== language_auto
)
585 objc_demangle (mangled
, 0);
586 if (demangled
!= NULL
)
588 gsymbol
->language
= language_objc
;
592 if (gsymbol
->language
== language_cplus
593 || gsymbol
->language
== language_auto
)
596 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
597 if (demangled
!= NULL
)
599 gsymbol
->language
= language_cplus
;
603 if (gsymbol
->language
== language_java
)
606 cplus_demangle (mangled
,
607 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
608 if (demangled
!= NULL
)
610 gsymbol
->language
= language_java
;
614 if (gsymbol
->language
== language_d
615 || gsymbol
->language
== language_auto
)
617 demangled
= d_demangle(mangled
, 0);
618 if (demangled
!= NULL
)
620 gsymbol
->language
= language_d
;
624 /* FIXME(dje): Continually adding languages here is clumsy.
625 Better to just call la_demangle if !auto, and if auto then call
626 a utility routine that tries successive languages in turn and reports
627 which one it finds. I realize the la_demangle options may be different
628 for different languages but there's already a FIXME for that. */
629 if (gsymbol
->language
== language_go
630 || gsymbol
->language
== language_auto
)
632 demangled
= go_demangle (mangled
, 0);
633 if (demangled
!= NULL
)
635 gsymbol
->language
= language_go
;
640 /* We could support `gsymbol->language == language_fortran' here to provide
641 module namespaces also for inferiors with only minimal symbol table (ELF
642 symbols). Just the mangling standard is not standardized across compilers
643 and there is no DW_AT_producer available for inferiors with only the ELF
644 symbols to check the mangling kind. */
648 /* Set both the mangled and demangled (if any) names for GSYMBOL based
649 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
650 objfile's obstack; but if COPY_NAME is 0 and if NAME is
651 NUL-terminated, then this function assumes that NAME is already
652 correctly saved (either permanently or with a lifetime tied to the
653 objfile), and it will not be copied.
655 The hash table corresponding to OBJFILE is used, and the memory
656 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
657 so the pointer can be discarded after calling this function. */
659 /* We have to be careful when dealing with Java names: when we run
660 into a Java minimal symbol, we don't know it's a Java symbol, so it
661 gets demangled as a C++ name. This is unfortunate, but there's not
662 much we can do about it: but when demangling partial symbols and
663 regular symbols, we'd better not reuse the wrong demangled name.
664 (See PR gdb/1039.) We solve this by putting a distinctive prefix
665 on Java names when storing them in the hash table. */
667 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
668 don't mind the Java prefix so much: different languages have
669 different demangling requirements, so it's only natural that we
670 need to keep language data around in our demangling cache. But
671 it's not good that the minimal symbol has the wrong demangled name.
672 Unfortunately, I can't think of any easy solution to that
675 #define JAVA_PREFIX "##JAVA$$"
676 #define JAVA_PREFIX_LEN 8
679 symbol_set_names (struct general_symbol_info
*gsymbol
,
680 const char *linkage_name
, int len
, int copy_name
,
681 struct objfile
*objfile
)
683 struct demangled_name_entry
**slot
;
684 /* A 0-terminated copy of the linkage name. */
685 const char *linkage_name_copy
;
686 /* A copy of the linkage name that might have a special Java prefix
687 added to it, for use when looking names up in the hash table. */
688 const char *lookup_name
;
689 /* The length of lookup_name. */
691 struct demangled_name_entry entry
;
693 if (gsymbol
->language
== language_ada
)
695 /* In Ada, we do the symbol lookups using the mangled name, so
696 we can save some space by not storing the demangled name.
698 As a side note, we have also observed some overlap between
699 the C++ mangling and Ada mangling, similarly to what has
700 been observed with Java. Because we don't store the demangled
701 name with the symbol, we don't need to use the same trick
704 gsymbol
->name
= linkage_name
;
707 char *name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
709 memcpy (name
, linkage_name
, len
);
711 gsymbol
->name
= name
;
713 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
718 if (objfile
->demangled_names_hash
== NULL
)
719 create_demangled_names_hash (objfile
);
721 /* The stabs reader generally provides names that are not
722 NUL-terminated; most of the other readers don't do this, so we
723 can just use the given copy, unless we're in the Java case. */
724 if (gsymbol
->language
== language_java
)
728 lookup_len
= len
+ JAVA_PREFIX_LEN
;
729 alloc_name
= alloca (lookup_len
+ 1);
730 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
731 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
732 alloc_name
[lookup_len
] = '\0';
734 lookup_name
= alloc_name
;
735 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
737 else if (linkage_name
[len
] != '\0')
742 alloc_name
= alloca (lookup_len
+ 1);
743 memcpy (alloc_name
, linkage_name
, len
);
744 alloc_name
[lookup_len
] = '\0';
746 lookup_name
= alloc_name
;
747 linkage_name_copy
= alloc_name
;
752 lookup_name
= linkage_name
;
753 linkage_name_copy
= linkage_name
;
756 entry
.mangled
= (char *) lookup_name
;
757 slot
= ((struct demangled_name_entry
**)
758 htab_find_slot (objfile
->demangled_names_hash
,
761 /* If this name is not in the hash table, add it. */
763 /* A C version of the symbol may have already snuck into the table.
764 This happens to, e.g., main.init (__go_init_main). Cope. */
765 || (gsymbol
->language
== language_go
766 && (*slot
)->demangled
[0] == '\0'))
768 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
770 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
772 /* Suppose we have demangled_name==NULL, copy_name==0, and
773 lookup_name==linkage_name. In this case, we already have the
774 mangled name saved, and we don't have a demangled name. So,
775 you might think we could save a little space by not recording
776 this in the hash table at all.
778 It turns out that it is actually important to still save such
779 an entry in the hash table, because storing this name gives
780 us better bcache hit rates for partial symbols. */
781 if (!copy_name
&& lookup_name
== linkage_name
)
783 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
784 offsetof (struct demangled_name_entry
,
786 + demangled_len
+ 1);
787 (*slot
)->mangled
= (char *) lookup_name
;
791 /* If we must copy the mangled name, put it directly after
792 the demangled name so we can have a single
794 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
795 offsetof (struct demangled_name_entry
,
797 + lookup_len
+ demangled_len
+ 2);
798 (*slot
)->mangled
= &((*slot
)->demangled
[demangled_len
+ 1]);
799 strcpy ((*slot
)->mangled
, lookup_name
);
802 if (demangled_name
!= NULL
)
804 strcpy ((*slot
)->demangled
, demangled_name
);
805 xfree (demangled_name
);
808 (*slot
)->demangled
[0] = '\0';
811 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
812 if ((*slot
)->demangled
[0] != '\0')
813 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
, objfile
);
815 symbol_set_demangled_name (gsymbol
, NULL
, objfile
);
818 /* Return the source code name of a symbol. In languages where
819 demangling is necessary, this is the demangled name. */
822 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
824 switch (gsymbol
->language
)
831 case language_fortran
:
832 if (symbol_get_demangled_name (gsymbol
) != NULL
)
833 return symbol_get_demangled_name (gsymbol
);
836 if (symbol_get_demangled_name (gsymbol
) != NULL
)
837 return symbol_get_demangled_name (gsymbol
);
839 return ada_decode_symbol (gsymbol
);
844 return gsymbol
->name
;
847 /* Return the demangled name for a symbol based on the language for
848 that symbol. If no demangled name exists, return NULL. */
851 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
853 switch (gsymbol
->language
)
860 case language_fortran
:
861 if (symbol_get_demangled_name (gsymbol
) != NULL
)
862 return symbol_get_demangled_name (gsymbol
);
865 if (symbol_get_demangled_name (gsymbol
) != NULL
)
866 return symbol_get_demangled_name (gsymbol
);
868 return ada_decode_symbol (gsymbol
);
876 /* Return the search name of a symbol---generally the demangled or
877 linkage name of the symbol, depending on how it will be searched for.
878 If there is no distinct demangled name, then returns the same value
879 (same pointer) as SYMBOL_LINKAGE_NAME. */
882 symbol_search_name (const struct general_symbol_info
*gsymbol
)
884 if (gsymbol
->language
== language_ada
)
885 return gsymbol
->name
;
887 return symbol_natural_name (gsymbol
);
890 /* Initialize the structure fields to zero values. */
893 init_sal (struct symtab_and_line
*sal
)
901 sal
->explicit_pc
= 0;
902 sal
->explicit_line
= 0;
907 /* Return 1 if the two sections are the same, or if they could
908 plausibly be copies of each other, one in an original object
909 file and another in a separated debug file. */
912 matching_obj_sections (struct obj_section
*obj_first
,
913 struct obj_section
*obj_second
)
915 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
916 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
919 /* If they're the same section, then they match. */
923 /* If either is NULL, give up. */
924 if (first
== NULL
|| second
== NULL
)
927 /* This doesn't apply to absolute symbols. */
928 if (first
->owner
== NULL
|| second
->owner
== NULL
)
931 /* If they're in the same object file, they must be different sections. */
932 if (first
->owner
== second
->owner
)
935 /* Check whether the two sections are potentially corresponding. They must
936 have the same size, address, and name. We can't compare section indexes,
937 which would be more reliable, because some sections may have been
939 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
942 /* In-memory addresses may start at a different offset, relativize them. */
943 if (bfd_get_section_vma (first
->owner
, first
)
944 - bfd_get_start_address (first
->owner
)
945 != bfd_get_section_vma (second
->owner
, second
)
946 - bfd_get_start_address (second
->owner
))
949 if (bfd_get_section_name (first
->owner
, first
) == NULL
950 || bfd_get_section_name (second
->owner
, second
) == NULL
951 || strcmp (bfd_get_section_name (first
->owner
, first
),
952 bfd_get_section_name (second
->owner
, second
)) != 0)
955 /* Otherwise check that they are in corresponding objfiles. */
958 if (obj
->obfd
== first
->owner
)
960 gdb_assert (obj
!= NULL
);
962 if (obj
->separate_debug_objfile
!= NULL
963 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
965 if (obj
->separate_debug_objfile_backlink
!= NULL
966 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
973 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
975 struct objfile
*objfile
;
976 struct minimal_symbol
*msymbol
;
978 /* If we know that this is not a text address, return failure. This is
979 necessary because we loop based on texthigh and textlow, which do
980 not include the data ranges. */
981 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
983 && (MSYMBOL_TYPE (msymbol
) == mst_data
984 || MSYMBOL_TYPE (msymbol
) == mst_bss
985 || MSYMBOL_TYPE (msymbol
) == mst_abs
986 || MSYMBOL_TYPE (msymbol
) == mst_file_data
987 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
990 ALL_OBJFILES (objfile
)
992 struct symtab
*result
= NULL
;
995 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1004 /* Debug symbols usually don't have section information. We need to dig that
1005 out of the minimal symbols and stash that in the debug symbol. */
1008 fixup_section (struct general_symbol_info
*ginfo
,
1009 CORE_ADDR addr
, struct objfile
*objfile
)
1011 struct minimal_symbol
*msym
;
1013 /* First, check whether a minimal symbol with the same name exists
1014 and points to the same address. The address check is required
1015 e.g. on PowerPC64, where the minimal symbol for a function will
1016 point to the function descriptor, while the debug symbol will
1017 point to the actual function code. */
1018 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1021 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1022 ginfo
->section
= SYMBOL_SECTION (msym
);
1026 /* Static, function-local variables do appear in the linker
1027 (minimal) symbols, but are frequently given names that won't
1028 be found via lookup_minimal_symbol(). E.g., it has been
1029 observed in frv-uclinux (ELF) executables that a static,
1030 function-local variable named "foo" might appear in the
1031 linker symbols as "foo.6" or "foo.3". Thus, there is no
1032 point in attempting to extend the lookup-by-name mechanism to
1033 handle this case due to the fact that there can be multiple
1036 So, instead, search the section table when lookup by name has
1037 failed. The ``addr'' and ``endaddr'' fields may have already
1038 been relocated. If so, the relocation offset (i.e. the
1039 ANOFFSET value) needs to be subtracted from these values when
1040 performing the comparison. We unconditionally subtract it,
1041 because, when no relocation has been performed, the ANOFFSET
1042 value will simply be zero.
1044 The address of the symbol whose section we're fixing up HAS
1045 NOT BEEN adjusted (relocated) yet. It can't have been since
1046 the section isn't yet known and knowing the section is
1047 necessary in order to add the correct relocation value. In
1048 other words, we wouldn't even be in this function (attempting
1049 to compute the section) if it were already known.
1051 Note that it is possible to search the minimal symbols
1052 (subtracting the relocation value if necessary) to find the
1053 matching minimal symbol, but this is overkill and much less
1054 efficient. It is not necessary to find the matching minimal
1055 symbol, only its section.
1057 Note that this technique (of doing a section table search)
1058 can fail when unrelocated section addresses overlap. For
1059 this reason, we still attempt a lookup by name prior to doing
1060 a search of the section table. */
1062 struct obj_section
*s
;
1064 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1066 int idx
= s
->the_bfd_section
->index
;
1067 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1069 if (obj_section_addr (s
) - offset
<= addr
1070 && addr
< obj_section_endaddr (s
) - offset
)
1072 ginfo
->obj_section
= s
;
1073 ginfo
->section
= idx
;
1081 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1088 if (SYMBOL_OBJ_SECTION (sym
))
1091 /* We either have an OBJFILE, or we can get at it from the sym's
1092 symtab. Anything else is a bug. */
1093 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1095 if (objfile
== NULL
)
1096 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1098 /* We should have an objfile by now. */
1099 gdb_assert (objfile
);
1101 switch (SYMBOL_CLASS (sym
))
1105 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1108 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1112 /* Nothing else will be listed in the minsyms -- no use looking
1117 fixup_section (&sym
->ginfo
, addr
, objfile
);
1122 /* Compute the demangled form of NAME as used by the various symbol
1123 lookup functions. The result is stored in *RESULT_NAME. Returns a
1124 cleanup which can be used to clean up the result.
1126 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1127 Normally, Ada symbol lookups are performed using the encoded name
1128 rather than the demangled name, and so it might seem to make sense
1129 for this function to return an encoded version of NAME.
1130 Unfortunately, we cannot do this, because this function is used in
1131 circumstances where it is not appropriate to try to encode NAME.
1132 For instance, when displaying the frame info, we demangle the name
1133 of each parameter, and then perform a symbol lookup inside our
1134 function using that demangled name. In Ada, certain functions
1135 have internally-generated parameters whose name contain uppercase
1136 characters. Encoding those name would result in those uppercase
1137 characters to become lowercase, and thus cause the symbol lookup
1141 demangle_for_lookup (const char *name
, enum language lang
,
1142 const char **result_name
)
1144 char *demangled_name
= NULL
;
1145 const char *modified_name
= NULL
;
1146 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1148 modified_name
= name
;
1150 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1151 lookup, so we can always binary search. */
1152 if (lang
== language_cplus
)
1154 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1157 modified_name
= demangled_name
;
1158 make_cleanup (xfree
, demangled_name
);
1162 /* If we were given a non-mangled name, canonicalize it
1163 according to the language (so far only for C++). */
1164 demangled_name
= cp_canonicalize_string (name
);
1167 modified_name
= demangled_name
;
1168 make_cleanup (xfree
, demangled_name
);
1172 else if (lang
== language_java
)
1174 demangled_name
= cplus_demangle (name
,
1175 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1178 modified_name
= demangled_name
;
1179 make_cleanup (xfree
, demangled_name
);
1182 else if (lang
== language_d
)
1184 demangled_name
= d_demangle (name
, 0);
1187 modified_name
= demangled_name
;
1188 make_cleanup (xfree
, demangled_name
);
1191 else if (lang
== language_go
)
1193 demangled_name
= go_demangle (name
, 0);
1196 modified_name
= demangled_name
;
1197 make_cleanup (xfree
, demangled_name
);
1201 *result_name
= modified_name
;
1205 /* Find the definition for a specified symbol name NAME
1206 in domain DOMAIN, visible from lexical block BLOCK.
1207 Returns the struct symbol pointer, or zero if no symbol is found.
1208 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1209 NAME is a field of the current implied argument `this'. If so set
1210 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1211 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1212 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1214 /* This function (or rather its subordinates) have a bunch of loops and
1215 it would seem to be attractive to put in some QUIT's (though I'm not really
1216 sure whether it can run long enough to be really important). But there
1217 are a few calls for which it would appear to be bad news to quit
1218 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1219 that there is C++ code below which can error(), but that probably
1220 doesn't affect these calls since they are looking for a known
1221 variable and thus can probably assume it will never hit the C++
1225 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1226 const domain_enum domain
, enum language lang
,
1227 int *is_a_field_of_this
)
1229 const char *modified_name
;
1230 struct symbol
*returnval
;
1231 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1233 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1234 is_a_field_of_this
);
1235 do_cleanups (cleanup
);
1240 /* Behave like lookup_symbol_in_language, but performed with the
1241 current language. */
1244 lookup_symbol (const char *name
, const struct block
*block
,
1245 domain_enum domain
, int *is_a_field_of_this
)
1247 return lookup_symbol_in_language (name
, block
, domain
,
1248 current_language
->la_language
,
1249 is_a_field_of_this
);
1252 /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
1253 found, or NULL if not found. */
1256 lookup_language_this (const struct language_defn
*lang
,
1257 const struct block
*block
)
1259 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1266 sym
= lookup_block_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1269 block_found
= block
;
1272 if (BLOCK_FUNCTION (block
))
1274 block
= BLOCK_SUPERBLOCK (block
);
1280 /* Behave like lookup_symbol except that NAME is the natural name
1281 (e.g., demangled name) of the symbol that we're looking for. */
1283 static struct symbol
*
1284 lookup_symbol_aux (const char *name
, const struct block
*block
,
1285 const domain_enum domain
, enum language language
,
1286 int *is_a_field_of_this
)
1289 const struct language_defn
*langdef
;
1291 /* Make sure we do something sensible with is_a_field_of_this, since
1292 the callers that set this parameter to some non-null value will
1293 certainly use it later and expect it to be either 0 or 1.
1294 If we don't set it, the contents of is_a_field_of_this are
1296 if (is_a_field_of_this
!= NULL
)
1297 *is_a_field_of_this
= 0;
1299 /* Search specified block and its superiors. Don't search
1300 STATIC_BLOCK or GLOBAL_BLOCK. */
1302 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1306 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1307 check to see if NAME is a field of `this'. */
1309 langdef
= language_def (language
);
1311 if (is_a_field_of_this
!= NULL
)
1313 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1317 struct type
*t
= sym
->type
;
1319 /* I'm not really sure that type of this can ever
1320 be typedefed; just be safe. */
1322 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1323 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1324 t
= TYPE_TARGET_TYPE (t
);
1326 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1327 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1328 error (_("Internal error: `%s' is not an aggregate"),
1329 langdef
->la_name_of_this
);
1331 if (check_field (t
, name
))
1333 *is_a_field_of_this
= 1;
1339 /* Now do whatever is appropriate for LANGUAGE to look
1340 up static and global variables. */
1342 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1346 /* Now search all static file-level symbols. Not strictly correct,
1347 but more useful than an error. */
1349 return lookup_static_symbol_aux (name
, domain
);
1352 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1353 first, then check the psymtabs. If a psymtab indicates the existence of the
1354 desired name as a file-level static, then do psymtab-to-symtab conversion on
1355 the fly and return the found symbol. */
1358 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1360 struct objfile
*objfile
;
1363 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
, NULL
);
1367 ALL_OBJFILES (objfile
)
1369 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1377 /* Check to see if the symbol is defined in BLOCK or its superiors.
1378 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1380 static struct symbol
*
1381 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1382 const domain_enum domain
,
1383 enum language language
)
1386 const struct block
*static_block
= block_static_block (block
);
1387 const char *scope
= block_scope (block
);
1389 /* Check if either no block is specified or it's a global block. */
1391 if (static_block
== NULL
)
1394 while (block
!= static_block
)
1396 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1400 if (language
== language_cplus
|| language
== language_fortran
)
1402 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1408 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1410 block
= BLOCK_SUPERBLOCK (block
);
1413 /* We've reached the edge of the function without finding a result. */
1418 /* Look up OBJFILE to BLOCK. */
1421 lookup_objfile_from_block (const struct block
*block
)
1423 struct objfile
*obj
;
1429 block
= block_global_block (block
);
1430 /* Go through SYMTABS. */
1431 ALL_SYMTABS (obj
, s
)
1432 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1434 if (obj
->separate_debug_objfile_backlink
)
1435 obj
= obj
->separate_debug_objfile_backlink
;
1443 /* Look up a symbol in a block; if found, fixup the symbol, and set
1444 block_found appropriately. */
1447 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1448 const domain_enum domain
)
1452 sym
= lookup_block_symbol (block
, name
, domain
);
1455 block_found
= block
;
1456 return fixup_symbol_section (sym
, NULL
);
1462 /* Check all global symbols in OBJFILE in symtabs and
1466 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1468 const domain_enum domain
)
1470 const struct objfile
*objfile
;
1472 struct blockvector
*bv
;
1473 const struct block
*block
;
1476 for (objfile
= main_objfile
;
1478 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1480 /* Go through symtabs. */
1481 ALL_OBJFILE_SYMTABS (objfile
, s
)
1483 bv
= BLOCKVECTOR (s
);
1484 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1485 sym
= lookup_block_symbol (block
, name
, domain
);
1488 block_found
= block
;
1489 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1493 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1502 /* Check to see if the symbol is defined in one of the OBJFILE's
1503 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1504 depending on whether or not we want to search global symbols or
1507 static struct symbol
*
1508 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1509 const char *name
, const domain_enum domain
)
1511 struct symbol
*sym
= NULL
;
1512 struct blockvector
*bv
;
1513 const struct block
*block
;
1517 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, block_index
,
1520 ALL_OBJFILE_SYMTABS (objfile
, s
)
1523 bv
= BLOCKVECTOR (s
);
1524 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1525 sym
= lookup_block_symbol (block
, name
, domain
);
1528 block_found
= block
;
1529 return fixup_symbol_section (sym
, objfile
);
1536 /* Same as lookup_symbol_aux_objfile, except that it searches all
1537 objfiles except for EXCLUDE_OBJFILE. Return the first match found.
1539 If EXCLUDE_OBJFILE is NULL, then all objfiles are searched. */
1541 static struct symbol
*
1542 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1543 const domain_enum domain
,
1544 struct objfile
*exclude_objfile
)
1547 struct objfile
*objfile
;
1549 ALL_OBJFILES (objfile
)
1551 if (objfile
!= exclude_objfile
)
1553 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1562 /* A helper function for lookup_symbol_aux that interfaces with the
1563 "quick" symbol table functions. */
1565 static struct symbol
*
1566 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1567 const char *name
, const domain_enum domain
)
1569 struct symtab
*symtab
;
1570 struct blockvector
*bv
;
1571 const struct block
*block
;
1576 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1580 bv
= BLOCKVECTOR (symtab
);
1581 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1582 sym
= lookup_block_symbol (block
, name
, domain
);
1585 /* This shouldn't be necessary, but as a last resort try
1586 looking in the statics even though the psymtab claimed
1587 the symbol was global, or vice-versa. It's possible
1588 that the psymtab gets it wrong in some cases. */
1590 /* FIXME: carlton/2002-09-30: Should we really do that?
1591 If that happens, isn't it likely to be a GDB error, in
1592 which case we should fix the GDB error rather than
1593 silently dealing with it here? So I'd vote for
1594 removing the check for the symbol in the other
1596 block
= BLOCKVECTOR_BLOCK (bv
,
1597 kind
== GLOBAL_BLOCK
?
1598 STATIC_BLOCK
: GLOBAL_BLOCK
);
1599 sym
= lookup_block_symbol (block
, name
, domain
);
1602 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1603 %s may be an inlined function, or may be a template function\n\
1604 (if a template, try specifying an instantiation: %s<type>)."),
1605 kind
== GLOBAL_BLOCK
? "global" : "static",
1606 name
, symtab
->filename
, name
, name
);
1608 return fixup_symbol_section (sym
, objfile
);
1611 /* A default version of lookup_symbol_nonlocal for use by languages
1612 that can't think of anything better to do. This implements the C
1616 basic_lookup_symbol_nonlocal (const char *name
,
1617 const struct block
*block
,
1618 const domain_enum domain
)
1622 /* NOTE: carlton/2003-05-19: The comments below were written when
1623 this (or what turned into this) was part of lookup_symbol_aux;
1624 I'm much less worried about these questions now, since these
1625 decisions have turned out well, but I leave these comments here
1628 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1629 not it would be appropriate to search the current global block
1630 here as well. (That's what this code used to do before the
1631 is_a_field_of_this check was moved up.) On the one hand, it's
1632 redundant with the lookup_symbol_aux_symtabs search that happens
1633 next. On the other hand, if decode_line_1 is passed an argument
1634 like filename:var, then the user presumably wants 'var' to be
1635 searched for in filename. On the third hand, there shouldn't be
1636 multiple global variables all of which are named 'var', and it's
1637 not like decode_line_1 has ever restricted its search to only
1638 global variables in a single filename. All in all, only
1639 searching the static block here seems best: it's correct and it's
1642 /* NOTE: carlton/2002-12-05: There's also a possible performance
1643 issue here: if you usually search for global symbols in the
1644 current file, then it would be slightly better to search the
1645 current global block before searching all the symtabs. But there
1646 are other factors that have a much greater effect on performance
1647 than that one, so I don't think we should worry about that for
1650 sym
= lookup_symbol_static (name
, block
, domain
);
1654 return lookup_symbol_global (name
, block
, domain
);
1657 /* Lookup a symbol in the static block associated to BLOCK, if there
1658 is one; do nothing if BLOCK is NULL or a global block. */
1661 lookup_symbol_static (const char *name
,
1662 const struct block
*block
,
1663 const domain_enum domain
)
1665 const struct block
*static_block
= block_static_block (block
);
1667 if (static_block
!= NULL
)
1668 return lookup_symbol_aux_block (name
, static_block
, domain
);
1673 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1677 lookup_symbol_global (const char *name
,
1678 const struct block
*block
,
1679 const domain_enum domain
)
1681 struct symbol
*sym
= NULL
;
1682 struct objfile
*block_objfile
= NULL
;
1683 struct objfile
*objfile
= NULL
;
1685 /* Call library-specific lookup procedure. */
1686 block_objfile
= lookup_objfile_from_block (block
);
1687 if (block_objfile
!= NULL
)
1688 sym
= solib_global_lookup (block_objfile
, name
, domain
);
1692 /* If BLOCK_OBJFILE is not NULL, then search this objfile first.
1693 In case the global symbol is defined in multiple objfiles,
1694 we have a better chance of finding the most relevant symbol. */
1696 if (block_objfile
!= NULL
)
1698 sym
= lookup_symbol_aux_objfile (block_objfile
, GLOBAL_BLOCK
,
1701 sym
= lookup_symbol_aux_quick (block_objfile
, GLOBAL_BLOCK
,
1707 /* Symbol not found in the BLOCK_OBJFILE, so try all the other
1708 objfiles, starting with symtabs first, and then partial symtabs. */
1710 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, domain
, block_objfile
);
1714 ALL_OBJFILES (objfile
)
1716 if (objfile
!= block_objfile
)
1718 sym
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
, name
, domain
);
1728 symbol_matches_domain (enum language symbol_language
,
1729 domain_enum symbol_domain
,
1732 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1733 A Java class declaration also defines a typedef for the class.
1734 Similarly, any Ada type declaration implicitly defines a typedef. */
1735 if (symbol_language
== language_cplus
1736 || symbol_language
== language_d
1737 || symbol_language
== language_java
1738 || symbol_language
== language_ada
)
1740 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1741 && symbol_domain
== STRUCT_DOMAIN
)
1744 /* For all other languages, strict match is required. */
1745 return (symbol_domain
== domain
);
1748 /* Look up a type named NAME in the struct_domain. The type returned
1749 must not be opaque -- i.e., must have at least one field
1753 lookup_transparent_type (const char *name
)
1755 return current_language
->la_lookup_transparent_type (name
);
1758 /* A helper for basic_lookup_transparent_type that interfaces with the
1759 "quick" symbol table functions. */
1761 static struct type
*
1762 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1765 struct symtab
*symtab
;
1766 struct blockvector
*bv
;
1767 struct block
*block
;
1772 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1776 bv
= BLOCKVECTOR (symtab
);
1777 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1778 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1781 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1783 /* This shouldn't be necessary, but as a last resort
1784 * try looking in the 'other kind' even though the psymtab
1785 * claimed the symbol was one thing. It's possible that
1786 * the psymtab gets it wrong in some cases.
1788 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1789 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1791 /* FIXME; error is wrong in one case. */
1793 Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1794 %s may be an inlined function, or may be a template function\n\
1795 (if a template, try specifying an instantiation: %s<type>)."),
1796 name
, symtab
->filename
, name
, name
);
1798 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1799 return SYMBOL_TYPE (sym
);
1804 /* The standard implementation of lookup_transparent_type. This code
1805 was modeled on lookup_symbol -- the parts not relevant to looking
1806 up types were just left out. In particular it's assumed here that
1807 types are available in struct_domain and only at file-static or
1811 basic_lookup_transparent_type (const char *name
)
1814 struct symtab
*s
= NULL
;
1815 struct blockvector
*bv
;
1816 struct objfile
*objfile
;
1817 struct block
*block
;
1820 /* Now search all the global symbols. Do the symtab's first, then
1821 check the psymtab's. If a psymtab indicates the existence
1822 of the desired name as a global, then do psymtab-to-symtab
1823 conversion on the fly and return the found symbol. */
1825 ALL_OBJFILES (objfile
)
1828 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1830 name
, STRUCT_DOMAIN
);
1832 ALL_OBJFILE_SYMTABS (objfile
, s
)
1835 bv
= BLOCKVECTOR (s
);
1836 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1837 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1838 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1840 return SYMBOL_TYPE (sym
);
1845 ALL_OBJFILES (objfile
)
1847 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1852 /* Now search the static file-level symbols.
1853 Not strictly correct, but more useful than an error.
1854 Do the symtab's first, then
1855 check the psymtab's. If a psymtab indicates the existence
1856 of the desired name as a file-level static, then do psymtab-to-symtab
1857 conversion on the fly and return the found symbol. */
1859 ALL_OBJFILES (objfile
)
1862 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, STATIC_BLOCK
,
1863 name
, STRUCT_DOMAIN
);
1865 ALL_OBJFILE_SYMTABS (objfile
, s
)
1867 bv
= BLOCKVECTOR (s
);
1868 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1869 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1870 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1872 return SYMBOL_TYPE (sym
);
1877 ALL_OBJFILES (objfile
)
1879 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1884 return (struct type
*) 0;
1887 /* Find the name of the file containing main(). */
1888 /* FIXME: What about languages without main() or specially linked
1889 executables that have no main() ? */
1892 find_main_filename (void)
1894 struct objfile
*objfile
;
1895 char *name
= main_name ();
1897 ALL_OBJFILES (objfile
)
1903 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1910 /* Search BLOCK for symbol NAME in DOMAIN.
1912 Note that if NAME is the demangled form of a C++ symbol, we will fail
1913 to find a match during the binary search of the non-encoded names, but
1914 for now we don't worry about the slight inefficiency of looking for
1915 a match we'll never find, since it will go pretty quick. Once the
1916 binary search terminates, we drop through and do a straight linear
1917 search on the symbols. Each symbol which is marked as being a ObjC/C++
1918 symbol (language_cplus or language_objc set) has both the encoded and
1919 non-encoded names tested for a match. */
1922 lookup_block_symbol (const struct block
*block
, const char *name
,
1923 const domain_enum domain
)
1925 struct block_iterator iter
;
1928 if (!BLOCK_FUNCTION (block
))
1930 for (sym
= block_iter_name_first (block
, name
, &iter
);
1932 sym
= block_iter_name_next (name
, &iter
))
1934 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1935 SYMBOL_DOMAIN (sym
), domain
))
1942 /* Note that parameter symbols do not always show up last in the
1943 list; this loop makes sure to take anything else other than
1944 parameter symbols first; it only uses parameter symbols as a
1945 last resort. Note that this only takes up extra computation
1948 struct symbol
*sym_found
= NULL
;
1950 for (sym
= block_iter_name_first (block
, name
, &iter
);
1952 sym
= block_iter_name_next (name
, &iter
))
1954 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1955 SYMBOL_DOMAIN (sym
), domain
))
1958 if (!SYMBOL_IS_ARGUMENT (sym
))
1964 return (sym_found
); /* Will be NULL if not found. */
1968 /* Iterate over the symbols named NAME, matching DOMAIN, starting with
1971 For each symbol that matches, CALLBACK is called. The symbol and
1972 DATA are passed to the callback.
1974 If CALLBACK returns zero, the iteration ends. Otherwise, the
1975 search continues. This function iterates upward through blocks.
1976 When the outermost block has been finished, the function
1980 iterate_over_symbols (const struct block
*block
, const char *name
,
1981 const domain_enum domain
,
1982 symbol_found_callback_ftype
*callback
,
1987 struct block_iterator iter
;
1990 for (sym
= block_iter_name_first (block
, name
, &iter
);
1992 sym
= block_iter_name_next (name
, &iter
))
1994 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1995 SYMBOL_DOMAIN (sym
), domain
))
1997 if (!callback (sym
, data
))
2002 block
= BLOCK_SUPERBLOCK (block
);
2006 /* Find the symtab associated with PC and SECTION. Look through the
2007 psymtabs and read in another symtab if necessary. */
2010 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2013 struct blockvector
*bv
;
2014 struct symtab
*s
= NULL
;
2015 struct symtab
*best_s
= NULL
;
2016 struct objfile
*objfile
;
2017 struct program_space
*pspace
;
2018 CORE_ADDR distance
= 0;
2019 struct minimal_symbol
*msymbol
;
2021 pspace
= current_program_space
;
2023 /* If we know that this is not a text address, return failure. This is
2024 necessary because we loop based on the block's high and low code
2025 addresses, which do not include the data ranges, and because
2026 we call find_pc_sect_psymtab which has a similar restriction based
2027 on the partial_symtab's texthigh and textlow. */
2028 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2030 && (MSYMBOL_TYPE (msymbol
) == mst_data
2031 || MSYMBOL_TYPE (msymbol
) == mst_bss
2032 || MSYMBOL_TYPE (msymbol
) == mst_abs
2033 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2034 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2037 /* Search all symtabs for the one whose file contains our address, and which
2038 is the smallest of all the ones containing the address. This is designed
2039 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2040 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2041 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2043 This happens for native ecoff format, where code from included files
2044 gets its own symtab. The symtab for the included file should have
2045 been read in already via the dependency mechanism.
2046 It might be swifter to create several symtabs with the same name
2047 like xcoff does (I'm not sure).
2049 It also happens for objfiles that have their functions reordered.
2050 For these, the symtab we are looking for is not necessarily read in. */
2052 ALL_PRIMARY_SYMTABS (objfile
, s
)
2054 bv
= BLOCKVECTOR (s
);
2055 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2057 if (BLOCK_START (b
) <= pc
2058 && BLOCK_END (b
) > pc
2060 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2062 /* For an objfile that has its functions reordered,
2063 find_pc_psymtab will find the proper partial symbol table
2064 and we simply return its corresponding symtab. */
2065 /* In order to better support objfiles that contain both
2066 stabs and coff debugging info, we continue on if a psymtab
2068 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2070 struct symtab
*result
;
2073 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2082 struct block_iterator iter
;
2083 struct symbol
*sym
= NULL
;
2085 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2087 fixup_symbol_section (sym
, objfile
);
2088 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2092 continue; /* No symbol in this symtab matches
2095 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2103 ALL_OBJFILES (objfile
)
2105 struct symtab
*result
;
2109 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2120 /* Find the symtab associated with PC. Look through the psymtabs and read
2121 in another symtab if necessary. Backward compatibility, no section. */
2124 find_pc_symtab (CORE_ADDR pc
)
2126 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2130 /* Find the source file and line number for a given PC value and SECTION.
2131 Return a structure containing a symtab pointer, a line number,
2132 and a pc range for the entire source line.
2133 The value's .pc field is NOT the specified pc.
2134 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2135 use the line that ends there. Otherwise, in that case, the line
2136 that begins there is used. */
2138 /* The big complication here is that a line may start in one file, and end just
2139 before the start of another file. This usually occurs when you #include
2140 code in the middle of a subroutine. To properly find the end of a line's PC
2141 range, we must search all symtabs associated with this compilation unit, and
2142 find the one whose first PC is closer than that of the next line in this
2145 /* If it's worth the effort, we could be using a binary search. */
2147 struct symtab_and_line
2148 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2151 struct linetable
*l
;
2154 struct linetable_entry
*item
;
2155 struct symtab_and_line val
;
2156 struct blockvector
*bv
;
2157 struct minimal_symbol
*msymbol
;
2158 struct minimal_symbol
*mfunsym
;
2159 struct objfile
*objfile
;
2161 /* Info on best line seen so far, and where it starts, and its file. */
2163 struct linetable_entry
*best
= NULL
;
2164 CORE_ADDR best_end
= 0;
2165 struct symtab
*best_symtab
= 0;
2167 /* Store here the first line number
2168 of a file which contains the line at the smallest pc after PC.
2169 If we don't find a line whose range contains PC,
2170 we will use a line one less than this,
2171 with a range from the start of that file to the first line's pc. */
2172 struct linetable_entry
*alt
= NULL
;
2173 struct symtab
*alt_symtab
= 0;
2175 /* Info on best line seen in this file. */
2177 struct linetable_entry
*prev
;
2179 /* If this pc is not from the current frame,
2180 it is the address of the end of a call instruction.
2181 Quite likely that is the start of the following statement.
2182 But what we want is the statement containing the instruction.
2183 Fudge the pc to make sure we get that. */
2185 init_sal (&val
); /* initialize to zeroes */
2187 val
.pspace
= current_program_space
;
2189 /* It's tempting to assume that, if we can't find debugging info for
2190 any function enclosing PC, that we shouldn't search for line
2191 number info, either. However, GAS can emit line number info for
2192 assembly files --- very helpful when debugging hand-written
2193 assembly code. In such a case, we'd have no debug info for the
2194 function, but we would have line info. */
2199 /* elz: added this because this function returned the wrong
2200 information if the pc belongs to a stub (import/export)
2201 to call a shlib function. This stub would be anywhere between
2202 two functions in the target, and the line info was erroneously
2203 taken to be the one of the line before the pc. */
2205 /* RT: Further explanation:
2207 * We have stubs (trampolines) inserted between procedures.
2209 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2210 * exists in the main image.
2212 * In the minimal symbol table, we have a bunch of symbols
2213 * sorted by start address. The stubs are marked as "trampoline",
2214 * the others appear as text. E.g.:
2216 * Minimal symbol table for main image
2217 * main: code for main (text symbol)
2218 * shr1: stub (trampoline symbol)
2219 * foo: code for foo (text symbol)
2221 * Minimal symbol table for "shr1" image:
2223 * shr1: code for shr1 (text symbol)
2226 * So the code below is trying to detect if we are in the stub
2227 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2228 * and if found, do the symbolization from the real-code address
2229 * rather than the stub address.
2231 * Assumptions being made about the minimal symbol table:
2232 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2233 * if we're really in the trampoline.s If we're beyond it (say
2234 * we're in "foo" in the above example), it'll have a closer
2235 * symbol (the "foo" text symbol for example) and will not
2236 * return the trampoline.
2237 * 2. lookup_minimal_symbol_text() will find a real text symbol
2238 * corresponding to the trampoline, and whose address will
2239 * be different than the trampoline address. I put in a sanity
2240 * check for the address being the same, to avoid an
2241 * infinite recursion.
2243 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2244 if (msymbol
!= NULL
)
2245 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2247 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2249 if (mfunsym
== NULL
)
2250 /* I eliminated this warning since it is coming out
2251 * in the following situation:
2252 * gdb shmain // test program with shared libraries
2253 * (gdb) break shr1 // function in shared lib
2254 * Warning: In stub for ...
2255 * In the above situation, the shared lib is not loaded yet,
2256 * so of course we can't find the real func/line info,
2257 * but the "break" still works, and the warning is annoying.
2258 * So I commented out the warning. RT */
2259 /* warning ("In stub for %s; unable to find real function/line info",
2260 SYMBOL_LINKAGE_NAME (msymbol)); */
2263 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2264 == SYMBOL_VALUE_ADDRESS (msymbol
))
2265 /* Avoid infinite recursion */
2266 /* See above comment about why warning is commented out. */
2267 /* warning ("In stub for %s; unable to find real function/line info",
2268 SYMBOL_LINKAGE_NAME (msymbol)); */
2272 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2276 s
= find_pc_sect_symtab (pc
, section
);
2279 /* If no symbol information, return previous pc. */
2286 bv
= BLOCKVECTOR (s
);
2287 objfile
= s
->objfile
;
2289 /* Look at all the symtabs that share this blockvector.
2290 They all have the same apriori range, that we found was right;
2291 but they have different line tables. */
2293 ALL_OBJFILE_SYMTABS (objfile
, s
)
2295 if (BLOCKVECTOR (s
) != bv
)
2298 /* Find the best line in this symtab. */
2305 /* I think len can be zero if the symtab lacks line numbers
2306 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2307 I'm not sure which, and maybe it depends on the symbol
2313 item
= l
->item
; /* Get first line info. */
2315 /* Is this file's first line closer than the first lines of other files?
2316 If so, record this file, and its first line, as best alternate. */
2317 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2323 for (i
= 0; i
< len
; i
++, item
++)
2325 /* Leave prev pointing to the linetable entry for the last line
2326 that started at or before PC. */
2333 /* At this point, prev points at the line whose start addr is <= pc, and
2334 item points at the next line. If we ran off the end of the linetable
2335 (pc >= start of the last line), then prev == item. If pc < start of
2336 the first line, prev will not be set. */
2338 /* Is this file's best line closer than the best in the other files?
2339 If so, record this file, and its best line, as best so far. Don't
2340 save prev if it represents the end of a function (i.e. line number
2341 0) instead of a real line. */
2343 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2348 /* Discard BEST_END if it's before the PC of the current BEST. */
2349 if (best_end
<= best
->pc
)
2353 /* If another line (denoted by ITEM) is in the linetable and its
2354 PC is after BEST's PC, but before the current BEST_END, then
2355 use ITEM's PC as the new best_end. */
2356 if (best
&& i
< len
&& item
->pc
> best
->pc
2357 && (best_end
== 0 || best_end
> item
->pc
))
2358 best_end
= item
->pc
;
2363 /* If we didn't find any line number info, just return zeros.
2364 We used to return alt->line - 1 here, but that could be
2365 anywhere; if we don't have line number info for this PC,
2366 don't make some up. */
2369 else if (best
->line
== 0)
2371 /* If our best fit is in a range of PC's for which no line
2372 number info is available (line number is zero) then we didn't
2373 find any valid line information. */
2378 val
.symtab
= best_symtab
;
2379 val
.line
= best
->line
;
2381 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2386 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2388 val
.section
= section
;
2392 /* Backward compatibility (no section). */
2394 struct symtab_and_line
2395 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2397 struct obj_section
*section
;
2399 section
= find_pc_overlay (pc
);
2400 if (pc_in_unmapped_range (pc
, section
))
2401 pc
= overlay_mapped_address (pc
, section
);
2402 return find_pc_sect_line (pc
, section
, notcurrent
);
2405 /* Find line number LINE in any symtab whose name is the same as
2408 If found, return the symtab that contains the linetable in which it was
2409 found, set *INDEX to the index in the linetable of the best entry
2410 found, and set *EXACT_MATCH nonzero if the value returned is an
2413 If not found, return NULL. */
2416 find_line_symtab (struct symtab
*symtab
, int line
,
2417 int *index
, int *exact_match
)
2419 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2421 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2425 struct linetable
*best_linetable
;
2426 struct symtab
*best_symtab
;
2428 /* First try looking it up in the given symtab. */
2429 best_linetable
= LINETABLE (symtab
);
2430 best_symtab
= symtab
;
2431 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2432 if (best_index
< 0 || !exact
)
2434 /* Didn't find an exact match. So we better keep looking for
2435 another symtab with the same name. In the case of xcoff,
2436 multiple csects for one source file (produced by IBM's FORTRAN
2437 compiler) produce multiple symtabs (this is unavoidable
2438 assuming csects can be at arbitrary places in memory and that
2439 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2441 /* BEST is the smallest linenumber > LINE so far seen,
2442 or 0 if none has been seen so far.
2443 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2446 struct objfile
*objfile
;
2449 if (best_index
>= 0)
2450 best
= best_linetable
->item
[best_index
].line
;
2454 ALL_OBJFILES (objfile
)
2457 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2461 /* Get symbol full file name if possible. */
2462 symtab_to_fullname (symtab
);
2464 ALL_SYMTABS (objfile
, s
)
2466 struct linetable
*l
;
2469 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2471 if (symtab
->fullname
!= NULL
2472 && symtab_to_fullname (s
) != NULL
2473 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2476 ind
= find_line_common (l
, line
, &exact
, 0);
2486 if (best
== 0 || l
->item
[ind
].line
< best
)
2488 best
= l
->item
[ind
].line
;
2501 *index
= best_index
;
2503 *exact_match
= exact
;
2508 /* Given SYMTAB, returns all the PCs function in the symtab that
2509 exactly match LINE. Returns NULL if there are no exact matches,
2510 but updates BEST_ITEM in this case. */
2513 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2514 struct linetable_entry
**best_item
)
2517 struct symbol
*previous_function
= NULL
;
2518 VEC (CORE_ADDR
) *result
= NULL
;
2520 /* First, collect all the PCs that are at this line. */
2526 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2532 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2534 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2540 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2548 /* Set the PC value for a given source file and line number and return true.
2549 Returns zero for invalid line number (and sets the PC to 0).
2550 The source file is specified with a struct symtab. */
2553 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2555 struct linetable
*l
;
2562 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2565 l
= LINETABLE (symtab
);
2566 *pc
= l
->item
[ind
].pc
;
2573 /* Find the range of pc values in a line.
2574 Store the starting pc of the line into *STARTPTR
2575 and the ending pc (start of next line) into *ENDPTR.
2576 Returns 1 to indicate success.
2577 Returns 0 if could not find the specified line. */
2580 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2583 CORE_ADDR startaddr
;
2584 struct symtab_and_line found_sal
;
2587 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2590 /* This whole function is based on address. For example, if line 10 has
2591 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2592 "info line *0x123" should say the line goes from 0x100 to 0x200
2593 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2594 This also insures that we never give a range like "starts at 0x134
2595 and ends at 0x12c". */
2597 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2598 if (found_sal
.line
!= sal
.line
)
2600 /* The specified line (sal) has zero bytes. */
2601 *startptr
= found_sal
.pc
;
2602 *endptr
= found_sal
.pc
;
2606 *startptr
= found_sal
.pc
;
2607 *endptr
= found_sal
.end
;
2612 /* Given a line table and a line number, return the index into the line
2613 table for the pc of the nearest line whose number is >= the specified one.
2614 Return -1 if none is found. The value is >= 0 if it is an index.
2615 START is the index at which to start searching the line table.
2617 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2620 find_line_common (struct linetable
*l
, int lineno
,
2621 int *exact_match
, int start
)
2626 /* BEST is the smallest linenumber > LINENO so far seen,
2627 or 0 if none has been seen so far.
2628 BEST_INDEX identifies the item for it. */
2630 int best_index
= -1;
2641 for (i
= start
; i
< len
; i
++)
2643 struct linetable_entry
*item
= &(l
->item
[i
]);
2645 if (item
->line
== lineno
)
2647 /* Return the first (lowest address) entry which matches. */
2652 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2659 /* If we got here, we didn't get an exact match. */
2664 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2666 struct symtab_and_line sal
;
2668 sal
= find_pc_line (pc
, 0);
2671 return sal
.symtab
!= 0;
2674 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2675 address for that function that has an entry in SYMTAB's line info
2676 table. If such an entry cannot be found, return FUNC_ADDR
2680 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2682 CORE_ADDR func_start
, func_end
;
2683 struct linetable
*l
;
2686 /* Give up if this symbol has no lineinfo table. */
2687 l
= LINETABLE (symtab
);
2691 /* Get the range for the function's PC values, or give up if we
2692 cannot, for some reason. */
2693 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2696 /* Linetable entries are ordered by PC values, see the commentary in
2697 symtab.h where `struct linetable' is defined. Thus, the first
2698 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2699 address we are looking for. */
2700 for (i
= 0; i
< l
->nitems
; i
++)
2702 struct linetable_entry
*item
= &(l
->item
[i
]);
2704 /* Don't use line numbers of zero, they mark special entries in
2705 the table. See the commentary on symtab.h before the
2706 definition of struct linetable. */
2707 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2714 /* Given a function symbol SYM, find the symtab and line for the start
2716 If the argument FUNFIRSTLINE is nonzero, we want the first line
2717 of real code inside the function. */
2719 struct symtab_and_line
2720 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2722 struct symtab_and_line sal
;
2724 fixup_symbol_section (sym
, NULL
);
2725 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2726 SYMBOL_OBJ_SECTION (sym
), 0);
2728 /* We always should have a line for the function start address.
2729 If we don't, something is odd. Create a plain SAL refering
2730 just the PC and hope that skip_prologue_sal (if requested)
2731 can find a line number for after the prologue. */
2732 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2735 sal
.pspace
= current_program_space
;
2736 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2737 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2741 skip_prologue_sal (&sal
);
2746 /* Adjust SAL to the first instruction past the function prologue.
2747 If the PC was explicitly specified, the SAL is not changed.
2748 If the line number was explicitly specified, at most the SAL's PC
2749 is updated. If SAL is already past the prologue, then do nothing. */
2752 skip_prologue_sal (struct symtab_and_line
*sal
)
2755 struct symtab_and_line start_sal
;
2756 struct cleanup
*old_chain
;
2757 CORE_ADDR pc
, saved_pc
;
2758 struct obj_section
*section
;
2760 struct objfile
*objfile
;
2761 struct gdbarch
*gdbarch
;
2762 struct block
*b
, *function_block
;
2763 int force_skip
, skip
;
2765 /* Do not change the SAL is PC was specified explicitly. */
2766 if (sal
->explicit_pc
)
2769 old_chain
= save_current_space_and_thread ();
2770 switch_to_program_space_and_thread (sal
->pspace
);
2772 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2775 fixup_symbol_section (sym
, NULL
);
2777 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2778 section
= SYMBOL_OBJ_SECTION (sym
);
2779 name
= SYMBOL_LINKAGE_NAME (sym
);
2780 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2784 struct minimal_symbol
*msymbol
2785 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2787 if (msymbol
== NULL
)
2789 do_cleanups (old_chain
);
2793 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2794 section
= SYMBOL_OBJ_SECTION (msymbol
);
2795 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2796 objfile
= msymbol_objfile (msymbol
);
2799 gdbarch
= get_objfile_arch (objfile
);
2801 /* Process the prologue in two passes. In the first pass try to skip the
2802 prologue (SKIP is true) and verify there is a real need for it (indicated
2803 by FORCE_SKIP). If no such reason was found run a second pass where the
2804 prologue is not skipped (SKIP is false). */
2809 /* Be conservative - allow direct PC (without skipping prologue) only if we
2810 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2811 have to be set by the caller so we use SYM instead. */
2812 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2820 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2821 so that gdbarch_skip_prologue has something unique to work on. */
2822 if (section_is_overlay (section
) && !section_is_mapped (section
))
2823 pc
= overlay_unmapped_address (pc
, section
);
2825 /* Skip "first line" of function (which is actually its prologue). */
2826 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2828 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2830 /* For overlays, map pc back into its mapped VMA range. */
2831 pc
= overlay_mapped_address (pc
, section
);
2833 /* Calculate line number. */
2834 start_sal
= find_pc_sect_line (pc
, section
, 0);
2836 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2837 line is still part of the same function. */
2838 if (skip
&& start_sal
.pc
!= pc
2839 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2840 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2841 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2842 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2844 /* First pc of next line */
2846 /* Recalculate the line number (might not be N+1). */
2847 start_sal
= find_pc_sect_line (pc
, section
, 0);
2850 /* On targets with executable formats that don't have a concept of
2851 constructors (ELF with .init has, PE doesn't), gcc emits a call
2852 to `__main' in `main' between the prologue and before user
2854 if (gdbarch_skip_main_prologue_p (gdbarch
)
2855 && name
&& strcmp_iw (name
, "main") == 0)
2857 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2858 /* Recalculate the line number (might not be N+1). */
2859 start_sal
= find_pc_sect_line (pc
, section
, 0);
2863 while (!force_skip
&& skip
--);
2865 /* If we still don't have a valid source line, try to find the first
2866 PC in the lineinfo table that belongs to the same function. This
2867 happens with COFF debug info, which does not seem to have an
2868 entry in lineinfo table for the code after the prologue which has
2869 no direct relation to source. For example, this was found to be
2870 the case with the DJGPP target using "gcc -gcoff" when the
2871 compiler inserted code after the prologue to make sure the stack
2873 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2875 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2876 /* Recalculate the line number. */
2877 start_sal
= find_pc_sect_line (pc
, section
, 0);
2880 do_cleanups (old_chain
);
2882 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2883 forward SAL to the end of the prologue. */
2888 sal
->section
= section
;
2890 /* Unless the explicit_line flag was set, update the SAL line
2891 and symtab to correspond to the modified PC location. */
2892 if (sal
->explicit_line
)
2895 sal
->symtab
= start_sal
.symtab
;
2896 sal
->line
= start_sal
.line
;
2897 sal
->end
= start_sal
.end
;
2899 /* Check if we are now inside an inlined function. If we can,
2900 use the call site of the function instead. */
2901 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2902 function_block
= NULL
;
2905 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2907 else if (BLOCK_FUNCTION (b
) != NULL
)
2909 b
= BLOCK_SUPERBLOCK (b
);
2911 if (function_block
!= NULL
2912 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2914 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2915 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2919 /* If P is of the form "operator[ \t]+..." where `...' is
2920 some legitimate operator text, return a pointer to the
2921 beginning of the substring of the operator text.
2922 Otherwise, return "". */
2925 operator_chars (char *p
, char **end
)
2928 if (strncmp (p
, "operator", 8))
2932 /* Don't get faked out by `operator' being part of a longer
2934 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2937 /* Allow some whitespace between `operator' and the operator symbol. */
2938 while (*p
== ' ' || *p
== '\t')
2941 /* Recognize 'operator TYPENAME'. */
2943 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2947 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2956 case '\\': /* regexp quoting */
2959 if (p
[2] == '=') /* 'operator\*=' */
2961 else /* 'operator\*' */
2965 else if (p
[1] == '[')
2968 error (_("mismatched quoting on brackets, "
2969 "try 'operator\\[\\]'"));
2970 else if (p
[2] == '\\' && p
[3] == ']')
2972 *end
= p
+ 4; /* 'operator\[\]' */
2976 error (_("nothing is allowed between '[' and ']'"));
2980 /* Gratuitous qoute: skip it and move on. */
3002 if (p
[0] == '-' && p
[1] == '>')
3004 /* Struct pointer member operator 'operator->'. */
3007 *end
= p
+ 3; /* 'operator->*' */
3010 else if (p
[2] == '\\')
3012 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3017 *end
= p
+ 2; /* 'operator->' */
3021 if (p
[1] == '=' || p
[1] == p
[0])
3032 error (_("`operator ()' must be specified "
3033 "without whitespace in `()'"));
3038 error (_("`operator ?:' must be specified "
3039 "without whitespace in `?:'"));
3044 error (_("`operator []' must be specified "
3045 "without whitespace in `[]'"));
3049 error (_("`operator %s' not supported"), p
);
3058 /* If FILE is not already in the table of files, return zero;
3059 otherwise return non-zero. Optionally add FILE to the table if ADD
3060 is non-zero. If *FIRST is non-zero, forget the old table
3064 filename_seen (const char *file
, int add
, int *first
)
3066 /* Table of files seen so far. */
3067 static const char **tab
= NULL
;
3068 /* Allocated size of tab in elements.
3069 Start with one 256-byte block (when using GNU malloc.c).
3070 24 is the malloc overhead when range checking is in effect. */
3071 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3072 /* Current size of tab in elements. */
3073 static int tab_cur_size
;
3079 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3083 /* Is FILE in tab? */
3084 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3085 if (filename_cmp (*p
, file
) == 0)
3088 /* No; maybe add it to tab. */
3091 if (tab_cur_size
== tab_alloc_size
)
3093 tab_alloc_size
*= 2;
3094 tab
= (const char **) xrealloc ((char *) tab
,
3095 tab_alloc_size
* sizeof (*tab
));
3097 tab
[tab_cur_size
++] = file
;
3103 /* Slave routine for sources_info. Force line breaks at ,'s.
3104 NAME is the name to print and *FIRST is nonzero if this is the first
3105 name printed. Set *FIRST to zero. */
3108 output_source_filename (const char *name
, int *first
)
3110 /* Since a single source file can result in several partial symbol
3111 tables, we need to avoid printing it more than once. Note: if
3112 some of the psymtabs are read in and some are not, it gets
3113 printed both under "Source files for which symbols have been
3114 read" and "Source files for which symbols will be read in on
3115 demand". I consider this a reasonable way to deal with the
3116 situation. I'm not sure whether this can also happen for
3117 symtabs; it doesn't hurt to check. */
3119 /* Was NAME already seen? */
3120 if (filename_seen (name
, 1, first
))
3122 /* Yes; don't print it again. */
3125 /* No; print it and reset *FIRST. */
3132 printf_filtered (", ");
3136 fputs_filtered (name
, gdb_stdout
);
3139 /* A callback for map_partial_symbol_filenames. */
3142 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3145 output_source_filename (fullname
? fullname
: filename
, data
);
3149 sources_info (char *ignore
, int from_tty
)
3152 struct objfile
*objfile
;
3155 if (!have_full_symbols () && !have_partial_symbols ())
3157 error (_("No symbol table is loaded. Use the \"file\" command."));
3160 printf_filtered ("Source files for which symbols have been read in:\n\n");
3163 ALL_SYMTABS (objfile
, s
)
3165 const char *fullname
= symtab_to_fullname (s
);
3167 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
3169 printf_filtered ("\n\n");
3171 printf_filtered ("Source files for which symbols "
3172 "will be read in on demand:\n\n");
3175 map_partial_symbol_filenames (output_partial_symbol_filename
, &first
,
3176 1 /*need_fullname*/);
3177 printf_filtered ("\n");
3181 file_matches (const char *file
, char *files
[], int nfiles
)
3185 if (file
!= NULL
&& nfiles
!= 0)
3187 for (i
= 0; i
< nfiles
; i
++)
3189 if (filename_cmp (files
[i
], lbasename (file
)) == 0)
3193 else if (nfiles
== 0)
3198 /* Free any memory associated with a search. */
3201 free_search_symbols (struct symbol_search
*symbols
)
3203 struct symbol_search
*p
;
3204 struct symbol_search
*next
;
3206 for (p
= symbols
; p
!= NULL
; p
= next
)
3214 do_free_search_symbols_cleanup (void *symbols
)
3216 free_search_symbols (symbols
);
3220 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3222 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3225 /* Helper function for sort_search_symbols and qsort. Can only
3226 sort symbols, not minimal symbols. */
3229 compare_search_syms (const void *sa
, const void *sb
)
3231 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3232 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3234 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3235 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3238 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3239 prevtail where it is, but update its next pointer to point to
3240 the first of the sorted symbols. */
3242 static struct symbol_search
*
3243 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3245 struct symbol_search
**symbols
, *symp
, *old_next
;
3248 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3250 symp
= prevtail
->next
;
3251 for (i
= 0; i
< nfound
; i
++)
3256 /* Generally NULL. */
3259 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3260 compare_search_syms
);
3263 for (i
= 0; i
< nfound
; i
++)
3265 symp
->next
= symbols
[i
];
3268 symp
->next
= old_next
;
3274 /* An object of this type is passed as the user_data to the
3275 expand_symtabs_matching method. */
3276 struct search_symbols_data
3281 /* It is true if PREG contains valid data, false otherwise. */
3282 unsigned preg_p
: 1;
3286 /* A callback for expand_symtabs_matching. */
3289 search_symbols_file_matches (const char *filename
, void *user_data
)
3291 struct search_symbols_data
*data
= user_data
;
3293 return file_matches (filename
, data
->files
, data
->nfiles
);
3296 /* A callback for expand_symtabs_matching. */
3299 search_symbols_name_matches (const char *symname
, void *user_data
)
3301 struct search_symbols_data
*data
= user_data
;
3303 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3306 /* Search the symbol table for matches to the regular expression REGEXP,
3307 returning the results in *MATCHES.
3309 Only symbols of KIND are searched:
3310 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3311 and constants (enums)
3312 FUNCTIONS_DOMAIN - search all functions
3313 TYPES_DOMAIN - search all type names
3314 ALL_DOMAIN - an internal error for this function
3316 free_search_symbols should be called when *MATCHES is no longer needed.
3318 The results are sorted locally; each symtab's global and static blocks are
3319 separately alphabetized. */
3322 search_symbols (char *regexp
, enum search_domain kind
,
3323 int nfiles
, char *files
[],
3324 struct symbol_search
**matches
)
3327 struct blockvector
*bv
;
3330 struct block_iterator iter
;
3332 struct objfile
*objfile
;
3333 struct minimal_symbol
*msymbol
;
3335 static const enum minimal_symbol_type types
[]
3336 = {mst_data
, mst_text
, mst_abs
};
3337 static const enum minimal_symbol_type types2
[]
3338 = {mst_bss
, mst_file_text
, mst_abs
};
3339 static const enum minimal_symbol_type types3
[]
3340 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3341 static const enum minimal_symbol_type types4
[]
3342 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3343 enum minimal_symbol_type ourtype
;
3344 enum minimal_symbol_type ourtype2
;
3345 enum minimal_symbol_type ourtype3
;
3346 enum minimal_symbol_type ourtype4
;
3347 struct symbol_search
*sr
;
3348 struct symbol_search
*psr
;
3349 struct symbol_search
*tail
;
3350 struct search_symbols_data datum
;
3352 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3353 CLEANUP_CHAIN is freed only in the case of an error. */
3354 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3355 struct cleanup
*retval_chain
;
3357 gdb_assert (kind
<= TYPES_DOMAIN
);
3359 ourtype
= types
[kind
];
3360 ourtype2
= types2
[kind
];
3361 ourtype3
= types3
[kind
];
3362 ourtype4
= types4
[kind
];
3364 sr
= *matches
= NULL
;
3370 /* Make sure spacing is right for C++ operators.
3371 This is just a courtesy to make the matching less sensitive
3372 to how many spaces the user leaves between 'operator'
3373 and <TYPENAME> or <OPERATOR>. */
3375 char *opname
= operator_chars (regexp
, &opend
);
3380 int fix
= -1; /* -1 means ok; otherwise number of
3383 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3385 /* There should 1 space between 'operator' and 'TYPENAME'. */
3386 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3391 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3392 if (opname
[-1] == ' ')
3395 /* If wrong number of spaces, fix it. */
3398 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3400 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3405 errcode
= regcomp (&datum
.preg
, regexp
,
3406 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3410 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3412 make_cleanup (xfree
, err
);
3413 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3416 make_regfree_cleanup (&datum
.preg
);
3419 /* Search through the partial symtabs *first* for all symbols
3420 matching the regexp. That way we don't have to reproduce all of
3421 the machinery below. */
3423 datum
.nfiles
= nfiles
;
3424 datum
.files
= files
;
3425 ALL_OBJFILES (objfile
)
3428 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3431 : search_symbols_file_matches
),
3432 search_symbols_name_matches
,
3437 retval_chain
= old_chain
;
3439 /* Here, we search through the minimal symbol tables for functions
3440 and variables that match, and force their symbols to be read.
3441 This is in particular necessary for demangled variable names,
3442 which are no longer put into the partial symbol tables.
3443 The symbol will then be found during the scan of symtabs below.
3445 For functions, find_pc_symtab should succeed if we have debug info
3446 for the function, for variables we have to call lookup_symbol
3447 to determine if the variable has debug info.
3448 If the lookup fails, set found_misc so that we will rescan to print
3449 any matching symbols without debug info. */
3451 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3453 ALL_MSYMBOLS (objfile
, msymbol
)
3457 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3458 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3459 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3460 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3463 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3466 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3468 /* FIXME: carlton/2003-02-04: Given that the
3469 semantics of lookup_symbol keeps on changing
3470 slightly, it would be a nice idea if we had a
3471 function lookup_symbol_minsym that found the
3472 symbol associated to a given minimal symbol (if
3474 if (kind
== FUNCTIONS_DOMAIN
3475 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3476 (struct block
*) NULL
,
3486 ALL_PRIMARY_SYMTABS (objfile
, s
)
3488 bv
= BLOCKVECTOR (s
);
3489 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3491 struct symbol_search
*prevtail
= tail
;
3494 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3495 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3497 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3501 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3503 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3505 && ((kind
== VARIABLES_DOMAIN
3506 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3507 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3508 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3509 /* LOC_CONST can be used for more than just enums,
3510 e.g., c++ static const members.
3511 We only want to skip enums here. */
3512 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3513 && TYPE_CODE (SYMBOL_TYPE (sym
))
3515 || (kind
== FUNCTIONS_DOMAIN
3516 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3517 || (kind
== TYPES_DOMAIN
3518 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3521 psr
= (struct symbol_search
*)
3522 xmalloc (sizeof (struct symbol_search
));
3524 psr
->symtab
= real_symtab
;
3526 psr
->msymbol
= NULL
;
3538 if (prevtail
== NULL
)
3540 struct symbol_search dummy
;
3543 tail
= sort_search_symbols (&dummy
, nfound
);
3546 make_cleanup_free_search_symbols (sr
);
3549 tail
= sort_search_symbols (prevtail
, nfound
);
3554 /* If there are no eyes, avoid all contact. I mean, if there are
3555 no debug symbols, then print directly from the msymbol_vector. */
3557 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3559 ALL_MSYMBOLS (objfile
, msymbol
)
3563 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3564 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3565 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3566 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3569 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3572 /* Functions: Look up by address. */
3573 if (kind
!= FUNCTIONS_DOMAIN
||
3574 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3576 /* Variables/Absolutes: Look up by name. */
3577 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3578 (struct block
*) NULL
, VAR_DOMAIN
, 0)
3582 psr
= (struct symbol_search
*)
3583 xmalloc (sizeof (struct symbol_search
));
3585 psr
->msymbol
= msymbol
;
3592 make_cleanup_free_search_symbols (sr
);
3604 discard_cleanups (retval_chain
);
3605 do_cleanups (old_chain
);
3609 /* Helper function for symtab_symbol_info, this function uses
3610 the data returned from search_symbols() to print information
3611 regarding the match to gdb_stdout. */
3614 print_symbol_info (enum search_domain kind
,
3615 struct symtab
*s
, struct symbol
*sym
,
3616 int block
, char *last
)
3618 if (last
== NULL
|| filename_cmp (last
, s
->filename
) != 0)
3620 fputs_filtered ("\nFile ", gdb_stdout
);
3621 fputs_filtered (s
->filename
, gdb_stdout
);
3622 fputs_filtered (":\n", gdb_stdout
);
3625 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3626 printf_filtered ("static ");
3628 /* Typedef that is not a C++ class. */
3629 if (kind
== TYPES_DOMAIN
3630 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3631 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3632 /* variable, func, or typedef-that-is-c++-class. */
3633 else if (kind
< TYPES_DOMAIN
||
3634 (kind
== TYPES_DOMAIN
&&
3635 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3637 type_print (SYMBOL_TYPE (sym
),
3638 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3639 ? "" : SYMBOL_PRINT_NAME (sym
)),
3642 printf_filtered (";\n");
3646 /* This help function for symtab_symbol_info() prints information
3647 for non-debugging symbols to gdb_stdout. */
3650 print_msymbol_info (struct minimal_symbol
*msymbol
)
3652 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3655 if (gdbarch_addr_bit (gdbarch
) <= 32)
3656 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3657 & (CORE_ADDR
) 0xffffffff,
3660 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3662 printf_filtered ("%s %s\n",
3663 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3666 /* This is the guts of the commands "info functions", "info types", and
3667 "info variables". It calls search_symbols to find all matches and then
3668 print_[m]symbol_info to print out some useful information about the
3672 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3674 static const char * const classnames
[] =
3675 {"variable", "function", "type"};
3676 struct symbol_search
*symbols
;
3677 struct symbol_search
*p
;
3678 struct cleanup
*old_chain
;
3679 char *last_filename
= NULL
;
3682 gdb_assert (kind
<= TYPES_DOMAIN
);
3684 /* Must make sure that if we're interrupted, symbols gets freed. */
3685 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3686 old_chain
= make_cleanup_free_search_symbols (symbols
);
3688 printf_filtered (regexp
3689 ? "All %ss matching regular expression \"%s\":\n"
3690 : "All defined %ss:\n",
3691 classnames
[kind
], regexp
);
3693 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3697 if (p
->msymbol
!= NULL
)
3701 printf_filtered ("\nNon-debugging symbols:\n");
3704 print_msymbol_info (p
->msymbol
);
3708 print_symbol_info (kind
,
3713 last_filename
= p
->symtab
->filename
;
3717 do_cleanups (old_chain
);
3721 variables_info (char *regexp
, int from_tty
)
3723 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3727 functions_info (char *regexp
, int from_tty
)
3729 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3734 types_info (char *regexp
, int from_tty
)
3736 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3739 /* Breakpoint all functions matching regular expression. */
3742 rbreak_command_wrapper (char *regexp
, int from_tty
)
3744 rbreak_command (regexp
, from_tty
);
3747 /* A cleanup function that calls end_rbreak_breakpoints. */
3750 do_end_rbreak_breakpoints (void *ignore
)
3752 end_rbreak_breakpoints ();
3756 rbreak_command (char *regexp
, int from_tty
)
3758 struct symbol_search
*ss
;
3759 struct symbol_search
*p
;
3760 struct cleanup
*old_chain
;
3761 char *string
= NULL
;
3763 char **files
= NULL
, *file_name
;
3768 char *colon
= strchr (regexp
, ':');
3770 if (colon
&& *(colon
+ 1) != ':')
3774 colon_index
= colon
- regexp
;
3775 file_name
= alloca (colon_index
+ 1);
3776 memcpy (file_name
, regexp
, colon_index
);
3777 file_name
[colon_index
--] = 0;
3778 while (isspace (file_name
[colon_index
]))
3779 file_name
[colon_index
--] = 0;
3783 while (isspace (*regexp
)) regexp
++;
3787 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3788 old_chain
= make_cleanup_free_search_symbols (ss
);
3789 make_cleanup (free_current_contents
, &string
);
3791 start_rbreak_breakpoints ();
3792 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3793 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3795 if (p
->msymbol
== NULL
)
3797 int newlen
= (strlen (p
->symtab
->filename
)
3798 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3803 string
= xrealloc (string
, newlen
);
3806 strcpy (string
, p
->symtab
->filename
);
3807 strcat (string
, ":'");
3808 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3809 strcat (string
, "'");
3810 break_command (string
, from_tty
);
3811 print_symbol_info (FUNCTIONS_DOMAIN
,
3815 p
->symtab
->filename
);
3819 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3823 string
= xrealloc (string
, newlen
);
3826 strcpy (string
, "'");
3827 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3828 strcat (string
, "'");
3830 break_command (string
, from_tty
);
3831 printf_filtered ("<function, no debug info> %s;\n",
3832 SYMBOL_PRINT_NAME (p
->msymbol
));
3836 do_cleanups (old_chain
);
3840 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3842 Either sym_text[sym_text_len] != '(' and then we search for any
3843 symbol starting with SYM_TEXT text.
3845 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3846 be terminated at that point. Partial symbol tables do not have parameters
3850 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3852 int (*ncmp
) (const char *, const char *, size_t);
3854 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3856 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
3859 if (sym_text
[sym_text_len
] == '(')
3861 /* User searches for `name(someth...'. Require NAME to be terminated.
3862 Normally psymtabs and gdbindex have no parameter types so '\0' will be
3863 present but accept even parameters presence. In this case this
3864 function is in fact strcmp_iw but whitespace skipping is not supported
3865 for tab completion. */
3867 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
3874 /* Free any memory associated with a completion list. */
3877 free_completion_list (char ***list_ptr
)
3880 char **list
= *list_ptr
;
3882 while (list
[i
] != NULL
)
3890 /* Callback for make_cleanup. */
3893 do_free_completion_list (void *list
)
3895 free_completion_list (list
);
3898 /* Helper routine for make_symbol_completion_list. */
3900 static int return_val_size
;
3901 static int return_val_index
;
3902 static char **return_val
;
3904 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3905 completion_list_add_name \
3906 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3908 /* Test to see if the symbol specified by SYMNAME (which is already
3909 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3910 characters. If so, add it to the current completion list. */
3913 completion_list_add_name (const char *symname
,
3914 const char *sym_text
, int sym_text_len
,
3915 const char *text
, const char *word
)
3919 /* Clip symbols that cannot match. */
3920 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
3923 /* We have a match for a completion, so add SYMNAME to the current list
3924 of matches. Note that the name is moved to freshly malloc'd space. */
3929 if (word
== sym_text
)
3931 new = xmalloc (strlen (symname
) + 5);
3932 strcpy (new, symname
);
3934 else if (word
> sym_text
)
3936 /* Return some portion of symname. */
3937 new = xmalloc (strlen (symname
) + 5);
3938 strcpy (new, symname
+ (word
- sym_text
));
3942 /* Return some of SYM_TEXT plus symname. */
3943 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3944 strncpy (new, word
, sym_text
- word
);
3945 new[sym_text
- word
] = '\0';
3946 strcat (new, symname
);
3949 if (return_val_index
+ 3 > return_val_size
)
3951 newsize
= (return_val_size
*= 2) * sizeof (char *);
3952 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3954 return_val
[return_val_index
++] = new;
3955 return_val
[return_val_index
] = NULL
;
3959 /* ObjC: In case we are completing on a selector, look as the msymbol
3960 again and feed all the selectors into the mill. */
3963 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
3964 const char *sym_text
, int sym_text_len
,
3965 const char *text
, const char *word
)
3967 static char *tmp
= NULL
;
3968 static unsigned int tmplen
= 0;
3970 const char *method
, *category
, *selector
;
3973 method
= SYMBOL_NATURAL_NAME (msymbol
);
3975 /* Is it a method? */
3976 if ((method
[0] != '-') && (method
[0] != '+'))
3979 if (sym_text
[0] == '[')
3980 /* Complete on shortened method method. */
3981 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3983 while ((strlen (method
) + 1) >= tmplen
)
3989 tmp
= xrealloc (tmp
, tmplen
);
3991 selector
= strchr (method
, ' ');
3992 if (selector
!= NULL
)
3995 category
= strchr (method
, '(');
3997 if ((category
!= NULL
) && (selector
!= NULL
))
3999 memcpy (tmp
, method
, (category
- method
));
4000 tmp
[category
- method
] = ' ';
4001 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4002 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4003 if (sym_text
[0] == '[')
4004 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4007 if (selector
!= NULL
)
4009 /* Complete on selector only. */
4010 strcpy (tmp
, selector
);
4011 tmp2
= strchr (tmp
, ']');
4015 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4019 /* Break the non-quoted text based on the characters which are in
4020 symbols. FIXME: This should probably be language-specific. */
4023 language_search_unquoted_string (char *text
, char *p
)
4025 for (; p
> text
; --p
)
4027 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4031 if ((current_language
->la_language
== language_objc
))
4033 if (p
[-1] == ':') /* Might be part of a method name. */
4035 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4036 p
-= 2; /* Beginning of a method name. */
4037 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4038 { /* Might be part of a method name. */
4041 /* Seeing a ' ' or a '(' is not conclusive evidence
4042 that we are in the middle of a method name. However,
4043 finding "-[" or "+[" should be pretty un-ambiguous.
4044 Unfortunately we have to find it now to decide. */
4047 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4048 t
[-1] == ' ' || t
[-1] == ':' ||
4049 t
[-1] == '(' || t
[-1] == ')')
4054 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4055 p
= t
- 2; /* Method name detected. */
4056 /* Else we leave with p unchanged. */
4066 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
4067 int sym_text_len
, char *text
, char *word
)
4069 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4071 struct type
*t
= SYMBOL_TYPE (sym
);
4072 enum type_code c
= TYPE_CODE (t
);
4075 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4076 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4077 if (TYPE_FIELD_NAME (t
, j
))
4078 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4079 sym_text
, sym_text_len
, text
, word
);
4083 /* Type of the user_data argument passed to add_macro_name or
4084 expand_partial_symbol_name. The contents are simply whatever is
4085 needed by completion_list_add_name. */
4086 struct add_name_data
4094 /* A callback used with macro_for_each and macro_for_each_in_scope.
4095 This adds a macro's name to the current completion list. */
4098 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4099 struct macro_source_file
*ignore2
, int ignore3
,
4102 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4104 completion_list_add_name ((char *) name
,
4105 datum
->sym_text
, datum
->sym_text_len
,
4106 datum
->text
, datum
->word
);
4109 /* A callback for expand_partial_symbol_names. */
4112 expand_partial_symbol_name (const char *name
, void *user_data
)
4114 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4116 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4120 default_make_symbol_completion_list_break_on (char *text
, char *word
,
4121 const char *break_on
)
4123 /* Problem: All of the symbols have to be copied because readline
4124 frees them. I'm not going to worry about this; hopefully there
4125 won't be that many. */
4129 struct minimal_symbol
*msymbol
;
4130 struct objfile
*objfile
;
4132 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4133 struct block_iterator iter
;
4134 /* The symbol we are completing on. Points in same buffer as text. */
4136 /* Length of sym_text. */
4138 struct add_name_data datum
;
4139 struct cleanup
*back_to
;
4141 /* Now look for the symbol we are supposed to complete on. */
4145 char *quote_pos
= NULL
;
4147 /* First see if this is a quoted string. */
4149 for (p
= text
; *p
!= '\0'; ++p
)
4151 if (quote_found
!= '\0')
4153 if (*p
== quote_found
)
4154 /* Found close quote. */
4156 else if (*p
== '\\' && p
[1] == quote_found
)
4157 /* A backslash followed by the quote character
4158 doesn't end the string. */
4161 else if (*p
== '\'' || *p
== '"')
4167 if (quote_found
== '\'')
4168 /* A string within single quotes can be a symbol, so complete on it. */
4169 sym_text
= quote_pos
+ 1;
4170 else if (quote_found
== '"')
4171 /* A double-quoted string is never a symbol, nor does it make sense
4172 to complete it any other way. */
4174 return_val
= (char **) xmalloc (sizeof (char *));
4175 return_val
[0] = NULL
;
4180 /* It is not a quoted string. Break it based on the characters
4181 which are in symbols. */
4184 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4185 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4194 sym_text_len
= strlen (sym_text
);
4196 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4198 if (current_language
->la_language
== language_cplus
4199 || current_language
->la_language
== language_java
4200 || current_language
->la_language
== language_fortran
)
4202 /* These languages may have parameters entered by user but they are never
4203 present in the partial symbol tables. */
4205 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4208 sym_text_len
= cs
- sym_text
;
4210 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4212 return_val_size
= 100;
4213 return_val_index
= 0;
4214 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4215 return_val
[0] = NULL
;
4216 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4218 datum
.sym_text
= sym_text
;
4219 datum
.sym_text_len
= sym_text_len
;
4223 /* Look through the partial symtabs for all symbols which begin
4224 by matching SYM_TEXT. Expand all CUs that you find to the list.
4225 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4226 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4228 /* At this point scan through the misc symbol vectors and add each
4229 symbol you find to the list. Eventually we want to ignore
4230 anything that isn't a text symbol (everything else will be
4231 handled by the psymtab code above). */
4233 ALL_MSYMBOLS (objfile
, msymbol
)
4236 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4238 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
4241 /* Search upwards from currently selected frame (so that we can
4242 complete on local vars). Also catch fields of types defined in
4243 this places which match our text string. Only complete on types
4244 visible from current context. */
4246 b
= get_selected_block (0);
4247 surrounding_static_block
= block_static_block (b
);
4248 surrounding_global_block
= block_global_block (b
);
4249 if (surrounding_static_block
!= NULL
)
4250 while (b
!= surrounding_static_block
)
4254 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4256 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4258 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4262 /* Stop when we encounter an enclosing function. Do not stop for
4263 non-inlined functions - the locals of the enclosing function
4264 are in scope for a nested function. */
4265 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4267 b
= BLOCK_SUPERBLOCK (b
);
4270 /* Add fields from the file's types; symbols will be added below. */
4272 if (surrounding_static_block
!= NULL
)
4273 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4274 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4276 if (surrounding_global_block
!= NULL
)
4277 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4278 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4280 /* Go through the symtabs and check the externs and statics for
4281 symbols which match. */
4283 ALL_PRIMARY_SYMTABS (objfile
, s
)
4286 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4287 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4289 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4293 ALL_PRIMARY_SYMTABS (objfile
, s
)
4296 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4297 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4299 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4303 if (current_language
->la_macro_expansion
== macro_expansion_c
)
4305 struct macro_scope
*scope
;
4307 /* Add any macros visible in the default scope. Note that this
4308 may yield the occasional wrong result, because an expression
4309 might be evaluated in a scope other than the default. For
4310 example, if the user types "break file:line if <TAB>", the
4311 resulting expression will be evaluated at "file:line" -- but
4312 at there does not seem to be a way to detect this at
4314 scope
= default_macro_scope ();
4317 macro_for_each_in_scope (scope
->file
, scope
->line
,
4318 add_macro_name
, &datum
);
4322 /* User-defined macros are always visible. */
4323 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4326 discard_cleanups (back_to
);
4327 return (return_val
);
4331 default_make_symbol_completion_list (char *text
, char *word
)
4333 return default_make_symbol_completion_list_break_on (text
, word
, "");
4336 /* Return a NULL terminated array of all symbols (regardless of class)
4337 which begin by matching TEXT. If the answer is no symbols, then
4338 the return value is an array which contains only a NULL pointer. */
4341 make_symbol_completion_list (char *text
, char *word
)
4343 return current_language
->la_make_symbol_completion_list (text
, word
);
4346 /* Like make_symbol_completion_list, but suitable for use as a
4347 completion function. */
4350 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4351 char *text
, char *word
)
4353 return make_symbol_completion_list (text
, word
);
4356 /* Like make_symbol_completion_list, but returns a list of symbols
4357 defined in a source file FILE. */
4360 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
4365 struct block_iterator iter
;
4366 /* The symbol we are completing on. Points in same buffer as text. */
4368 /* Length of sym_text. */
4371 /* Now look for the symbol we are supposed to complete on.
4372 FIXME: This should be language-specific. */
4376 char *quote_pos
= NULL
;
4378 /* First see if this is a quoted string. */
4380 for (p
= text
; *p
!= '\0'; ++p
)
4382 if (quote_found
!= '\0')
4384 if (*p
== quote_found
)
4385 /* Found close quote. */
4387 else if (*p
== '\\' && p
[1] == quote_found
)
4388 /* A backslash followed by the quote character
4389 doesn't end the string. */
4392 else if (*p
== '\'' || *p
== '"')
4398 if (quote_found
== '\'')
4399 /* A string within single quotes can be a symbol, so complete on it. */
4400 sym_text
= quote_pos
+ 1;
4401 else if (quote_found
== '"')
4402 /* A double-quoted string is never a symbol, nor does it make sense
4403 to complete it any other way. */
4405 return_val
= (char **) xmalloc (sizeof (char *));
4406 return_val
[0] = NULL
;
4411 /* Not a quoted string. */
4412 sym_text
= language_search_unquoted_string (text
, p
);
4416 sym_text_len
= strlen (sym_text
);
4418 return_val_size
= 10;
4419 return_val_index
= 0;
4420 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4421 return_val
[0] = NULL
;
4423 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4425 s
= lookup_symtab (srcfile
);
4428 /* Maybe they typed the file with leading directories, while the
4429 symbol tables record only its basename. */
4430 const char *tail
= lbasename (srcfile
);
4433 s
= lookup_symtab (tail
);
4436 /* If we have no symtab for that file, return an empty list. */
4438 return (return_val
);
4440 /* Go through this symtab and check the externs and statics for
4441 symbols which match. */
4443 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4444 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4446 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4449 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4450 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4452 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4455 return (return_val
);
4458 /* A helper function for make_source_files_completion_list. It adds
4459 another file name to a list of possible completions, growing the
4460 list as necessary. */
4463 add_filename_to_list (const char *fname
, char *text
, char *word
,
4464 char ***list
, int *list_used
, int *list_alloced
)
4467 size_t fnlen
= strlen (fname
);
4469 if (*list_used
+ 1 >= *list_alloced
)
4472 *list
= (char **) xrealloc ((char *) *list
,
4473 *list_alloced
* sizeof (char *));
4478 /* Return exactly fname. */
4479 new = xmalloc (fnlen
+ 5);
4480 strcpy (new, fname
);
4482 else if (word
> text
)
4484 /* Return some portion of fname. */
4485 new = xmalloc (fnlen
+ 5);
4486 strcpy (new, fname
+ (word
- text
));
4490 /* Return some of TEXT plus fname. */
4491 new = xmalloc (fnlen
+ (text
- word
) + 5);
4492 strncpy (new, word
, text
- word
);
4493 new[text
- word
] = '\0';
4494 strcat (new, fname
);
4496 (*list
)[*list_used
] = new;
4497 (*list
)[++*list_used
] = NULL
;
4501 not_interesting_fname (const char *fname
)
4503 static const char *illegal_aliens
[] = {
4504 "_globals_", /* inserted by coff_symtab_read */
4509 for (i
= 0; illegal_aliens
[i
]; i
++)
4511 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4517 /* An object of this type is passed as the user_data argument to
4518 map_partial_symbol_filenames. */
4519 struct add_partial_filename_data
4530 /* A callback for map_partial_symbol_filenames. */
4533 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4536 struct add_partial_filename_data
*data
= user_data
;
4538 if (not_interesting_fname (filename
))
4540 if (!filename_seen (filename
, 1, data
->first
)
4541 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4543 /* This file matches for a completion; add it to the
4544 current list of matches. */
4545 add_filename_to_list (filename
, data
->text
, data
->word
,
4546 data
->list
, data
->list_used
, data
->list_alloced
);
4550 const char *base_name
= lbasename (filename
);
4552 if (base_name
!= filename
4553 && !filename_seen (base_name
, 1, data
->first
)
4554 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4555 add_filename_to_list (base_name
, data
->text
, data
->word
,
4556 data
->list
, data
->list_used
, data
->list_alloced
);
4560 /* Return a NULL terminated array of all source files whose names
4561 begin with matching TEXT. The file names are looked up in the
4562 symbol tables of this program. If the answer is no matchess, then
4563 the return value is an array which contains only a NULL pointer. */
4566 make_source_files_completion_list (char *text
, char *word
)
4569 struct objfile
*objfile
;
4571 int list_alloced
= 1;
4573 size_t text_len
= strlen (text
);
4574 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
4575 const char *base_name
;
4576 struct add_partial_filename_data datum
;
4577 struct cleanup
*back_to
;
4581 if (!have_full_symbols () && !have_partial_symbols ())
4584 back_to
= make_cleanup (do_free_completion_list
, &list
);
4586 ALL_SYMTABS (objfile
, s
)
4588 if (not_interesting_fname (s
->filename
))
4590 if (!filename_seen (s
->filename
, 1, &first
)
4591 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4593 /* This file matches for a completion; add it to the current
4595 add_filename_to_list (s
->filename
, text
, word
,
4596 &list
, &list_used
, &list_alloced
);
4600 /* NOTE: We allow the user to type a base name when the
4601 debug info records leading directories, but not the other
4602 way around. This is what subroutines of breakpoint
4603 command do when they parse file names. */
4604 base_name
= lbasename (s
->filename
);
4605 if (base_name
!= s
->filename
4606 && !filename_seen (base_name
, 1, &first
)
4607 && filename_ncmp (base_name
, text
, text_len
) == 0)
4608 add_filename_to_list (base_name
, text
, word
,
4609 &list
, &list_used
, &list_alloced
);
4613 datum
.first
= &first
;
4616 datum
.text_len
= text_len
;
4618 datum
.list_used
= &list_used
;
4619 datum
.list_alloced
= &list_alloced
;
4620 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4621 0 /*need_fullname*/);
4622 discard_cleanups (back_to
);
4627 /* Determine if PC is in the prologue of a function. The prologue is the area
4628 between the first instruction of a function, and the first executable line.
4629 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4631 If non-zero, func_start is where we think the prologue starts, possibly
4632 by previous examination of symbol table information. */
4635 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4637 struct symtab_and_line sal
;
4638 CORE_ADDR func_addr
, func_end
;
4640 /* We have several sources of information we can consult to figure
4642 - Compilers usually emit line number info that marks the prologue
4643 as its own "source line". So the ending address of that "line"
4644 is the end of the prologue. If available, this is the most
4646 - The minimal symbols and partial symbols, which can usually tell
4647 us the starting and ending addresses of a function.
4648 - If we know the function's start address, we can call the
4649 architecture-defined gdbarch_skip_prologue function to analyze the
4650 instruction stream and guess where the prologue ends.
4651 - Our `func_start' argument; if non-zero, this is the caller's
4652 best guess as to the function's entry point. At the time of
4653 this writing, handle_inferior_event doesn't get this right, so
4654 it should be our last resort. */
4656 /* Consult the partial symbol table, to find which function
4658 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4660 CORE_ADDR prologue_end
;
4662 /* We don't even have minsym information, so fall back to using
4663 func_start, if given. */
4665 return 1; /* We *might* be in a prologue. */
4667 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4669 return func_start
<= pc
&& pc
< prologue_end
;
4672 /* If we have line number information for the function, that's
4673 usually pretty reliable. */
4674 sal
= find_pc_line (func_addr
, 0);
4676 /* Now sal describes the source line at the function's entry point,
4677 which (by convention) is the prologue. The end of that "line",
4678 sal.end, is the end of the prologue.
4680 Note that, for functions whose source code is all on a single
4681 line, the line number information doesn't always end up this way.
4682 So we must verify that our purported end-of-prologue address is
4683 *within* the function, not at its start or end. */
4685 || sal
.end
<= func_addr
4686 || func_end
<= sal
.end
)
4688 /* We don't have any good line number info, so use the minsym
4689 information, together with the architecture-specific prologue
4691 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4693 return func_addr
<= pc
&& pc
< prologue_end
;
4696 /* We have line number info, and it looks good. */
4697 return func_addr
<= pc
&& pc
< sal
.end
;
4700 /* Given PC at the function's start address, attempt to find the
4701 prologue end using SAL information. Return zero if the skip fails.
4703 A non-optimized prologue traditionally has one SAL for the function
4704 and a second for the function body. A single line function has
4705 them both pointing at the same line.
4707 An optimized prologue is similar but the prologue may contain
4708 instructions (SALs) from the instruction body. Need to skip those
4709 while not getting into the function body.
4711 The functions end point and an increasing SAL line are used as
4712 indicators of the prologue's endpoint.
4714 This code is based on the function refine_prologue_limit
4718 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4720 struct symtab_and_line prologue_sal
;
4725 /* Get an initial range for the function. */
4726 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4727 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4729 prologue_sal
= find_pc_line (start_pc
, 0);
4730 if (prologue_sal
.line
!= 0)
4732 /* For languages other than assembly, treat two consecutive line
4733 entries at the same address as a zero-instruction prologue.
4734 The GNU assembler emits separate line notes for each instruction
4735 in a multi-instruction macro, but compilers generally will not
4737 if (prologue_sal
.symtab
->language
!= language_asm
)
4739 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4742 /* Skip any earlier lines, and any end-of-sequence marker
4743 from a previous function. */
4744 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4745 || linetable
->item
[idx
].line
== 0)
4748 if (idx
+1 < linetable
->nitems
4749 && linetable
->item
[idx
+1].line
!= 0
4750 && linetable
->item
[idx
+1].pc
== start_pc
)
4754 /* If there is only one sal that covers the entire function,
4755 then it is probably a single line function, like
4757 if (prologue_sal
.end
>= end_pc
)
4760 while (prologue_sal
.end
< end_pc
)
4762 struct symtab_and_line sal
;
4764 sal
= find_pc_line (prologue_sal
.end
, 0);
4767 /* Assume that a consecutive SAL for the same (or larger)
4768 line mark the prologue -> body transition. */
4769 if (sal
.line
>= prologue_sal
.line
)
4772 /* The line number is smaller. Check that it's from the
4773 same function, not something inlined. If it's inlined,
4774 then there is no point comparing the line numbers. */
4775 bl
= block_for_pc (prologue_sal
.end
);
4778 if (block_inlined_p (bl
))
4780 if (BLOCK_FUNCTION (bl
))
4785 bl
= BLOCK_SUPERBLOCK (bl
);
4790 /* The case in which compiler's optimizer/scheduler has
4791 moved instructions into the prologue. We look ahead in
4792 the function looking for address ranges whose
4793 corresponding line number is less the first one that we
4794 found for the function. This is more conservative then
4795 refine_prologue_limit which scans a large number of SALs
4796 looking for any in the prologue. */
4801 if (prologue_sal
.end
< end_pc
)
4802 /* Return the end of this line, or zero if we could not find a
4804 return prologue_sal
.end
;
4806 /* Don't return END_PC, which is past the end of the function. */
4807 return prologue_sal
.pc
;
4810 struct symtabs_and_lines
4811 decode_line_spec (char *string
, int flags
)
4813 struct symtabs_and_lines sals
;
4814 struct symtab_and_line cursal
;
4817 error (_("Empty line specification."));
4819 /* We use whatever is set as the current source line. We do not try
4820 and get a default or it will recursively call us! */
4821 cursal
= get_current_source_symtab_and_line ();
4823 sals
= decode_line_1 (&string
, flags
,
4824 cursal
.symtab
, cursal
.line
);
4827 error (_("Junk at end of line specification: %s"), string
);
4832 static char *name_of_main
;
4833 enum language language_of_main
= language_unknown
;
4836 set_main_name (const char *name
)
4838 if (name_of_main
!= NULL
)
4840 xfree (name_of_main
);
4841 name_of_main
= NULL
;
4842 language_of_main
= language_unknown
;
4846 name_of_main
= xstrdup (name
);
4847 language_of_main
= language_unknown
;
4851 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4855 find_main_name (void)
4857 const char *new_main_name
;
4859 /* Try to see if the main procedure is in Ada. */
4860 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4861 be to add a new method in the language vector, and call this
4862 method for each language until one of them returns a non-empty
4863 name. This would allow us to remove this hard-coded call to
4864 an Ada function. It is not clear that this is a better approach
4865 at this point, because all methods need to be written in a way
4866 such that false positives never be returned. For instance, it is
4867 important that a method does not return a wrong name for the main
4868 procedure if the main procedure is actually written in a different
4869 language. It is easy to guaranty this with Ada, since we use a
4870 special symbol generated only when the main in Ada to find the name
4871 of the main procedure. It is difficult however to see how this can
4872 be guarantied for languages such as C, for instance. This suggests
4873 that order of call for these methods becomes important, which means
4874 a more complicated approach. */
4875 new_main_name
= ada_main_name ();
4876 if (new_main_name
!= NULL
)
4878 set_main_name (new_main_name
);
4882 new_main_name
= go_main_name ();
4883 if (new_main_name
!= NULL
)
4885 set_main_name (new_main_name
);
4889 new_main_name
= pascal_main_name ();
4890 if (new_main_name
!= NULL
)
4892 set_main_name (new_main_name
);
4896 /* The languages above didn't identify the name of the main procedure.
4897 Fallback to "main". */
4898 set_main_name ("main");
4904 if (name_of_main
== NULL
)
4907 return name_of_main
;
4910 /* Handle ``executable_changed'' events for the symtab module. */
4913 symtab_observer_executable_changed (void)
4915 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4916 set_main_name (NULL
);
4919 /* Return 1 if the supplied producer string matches the ARM RealView
4920 compiler (armcc). */
4923 producer_is_realview (const char *producer
)
4925 static const char *const arm_idents
[] = {
4926 "ARM C Compiler, ADS",
4927 "Thumb C Compiler, ADS",
4928 "ARM C++ Compiler, ADS",
4929 "Thumb C++ Compiler, ADS",
4930 "ARM/Thumb C/C++ Compiler, RVCT",
4931 "ARM C/C++ Compiler, RVCT"
4935 if (producer
== NULL
)
4938 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
4939 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
4946 _initialize_symtab (void)
4948 add_info ("variables", variables_info
, _("\
4949 All global and static variable names, or those matching REGEXP."));
4951 add_com ("whereis", class_info
, variables_info
, _("\
4952 All global and static variable names, or those matching REGEXP."));
4954 add_info ("functions", functions_info
,
4955 _("All function names, or those matching REGEXP."));
4957 /* FIXME: This command has at least the following problems:
4958 1. It prints builtin types (in a very strange and confusing fashion).
4959 2. It doesn't print right, e.g. with
4960 typedef struct foo *FOO
4961 type_print prints "FOO" when we want to make it (in this situation)
4962 print "struct foo *".
4963 I also think "ptype" or "whatis" is more likely to be useful (but if
4964 there is much disagreement "info types" can be fixed). */
4965 add_info ("types", types_info
,
4966 _("All type names, or those matching REGEXP."));
4968 add_info ("sources", sources_info
,
4969 _("Source files in the program."));
4971 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4972 _("Set a breakpoint for all functions matching REGEXP."));
4976 add_com ("lf", class_info
, sources_info
,
4977 _("Source files in the program"));
4978 add_com ("lg", class_info
, variables_info
, _("\
4979 All global and static variable names, or those matching REGEXP."));
4982 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4983 multiple_symbols_modes
, &multiple_symbols_mode
,
4985 Set the debugger behavior when more than one symbol are possible matches\n\
4986 in an expression."), _("\
4987 Show how the debugger handles ambiguities in expressions."), _("\
4988 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4989 NULL
, NULL
, &setlist
, &showlist
);
4991 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
4992 &basenames_may_differ
, _("\
4993 Set whether a source file may have multiple base names."), _("\
4994 Show whether a source file may have multiple base names."), _("\
4995 (A \"base name\" is the name of a file with the directory part removed.\n\
4996 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
4997 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
4998 before comparing them. Canonicalization is an expensive operation,\n\
4999 but it allows the same file be known by more than one base name.\n\
5000 If not set (the default), all source files are assumed to have just\n\
5001 one base name, and gdb will do file name comparisons more efficiently."),
5003 &setlist
, &showlist
);
5005 observer_attach_executable_changed (symtab_observer_executable_changed
);