1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009,
5 2010 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
41 #include "objc-lang.h"
49 #include "gdb_obstack.h"
51 #include "dictionary.h"
53 #include <sys/types.h>
55 #include "gdb_string.h"
59 #include "cp-support.h"
61 #include "gdb_assert.h"
64 #include "macroscope.h"
68 /* Prototypes for local functions */
70 static void completion_list_add_name (char *, char *, int, char *, char *);
72 static void rbreak_command (char *, int);
74 static void types_info (char *, int);
76 static void functions_info (char *, int);
78 static void variables_info (char *, int);
80 static void sources_info (char *, int);
82 static void output_source_filename (const char *, int *);
84 static int find_line_common (struct linetable
*, int, int *);
86 /* This one is used by linespec.c */
88 char *operator_chars (char *p
, char **end
);
90 static struct symbol
*lookup_symbol_aux (const char *name
,
91 const struct block
*block
,
92 const domain_enum domain
,
93 enum language language
,
94 int *is_a_field_of_this
);
97 struct symbol
*lookup_symbol_aux_local (const char *name
,
98 const struct block
*block
,
99 const domain_enum domain
,
100 enum language language
);
103 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
105 const domain_enum domain
);
108 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
111 const domain_enum domain
);
113 static void print_symbol_info (domain_enum
,
114 struct symtab
*, struct symbol
*, int, char *);
116 static void print_msymbol_info (struct minimal_symbol
*);
118 static void symtab_symbol_info (char *, domain_enum
, int);
120 void _initialize_symtab (void);
124 /* Allow the user to configure the debugger behavior with respect
125 to multiple-choice menus when more than one symbol matches during
128 const char multiple_symbols_ask
[] = "ask";
129 const char multiple_symbols_all
[] = "all";
130 const char multiple_symbols_cancel
[] = "cancel";
131 static const char *multiple_symbols_modes
[] =
133 multiple_symbols_ask
,
134 multiple_symbols_all
,
135 multiple_symbols_cancel
,
138 static const char *multiple_symbols_mode
= multiple_symbols_all
;
140 /* Read-only accessor to AUTO_SELECT_MODE. */
143 multiple_symbols_select_mode (void)
145 return multiple_symbols_mode
;
148 /* Block in which the most recently searched-for symbol was found.
149 Might be better to make this a parameter to lookup_symbol and
152 const struct block
*block_found
;
154 /* Check for a symtab of a specific name; first in symtabs, then in
155 psymtabs. *If* there is no '/' in the name, a match after a '/'
156 in the symtab filename will also work. */
159 lookup_symtab (const char *name
)
162 struct symtab
*s
= NULL
;
163 struct objfile
*objfile
;
164 char *real_path
= NULL
;
165 char *full_path
= NULL
;
167 /* Here we are interested in canonicalizing an absolute path, not
168 absolutizing a relative path. */
169 if (IS_ABSOLUTE_PATH (name
))
171 full_path
= xfullpath (name
);
172 make_cleanup (xfree
, full_path
);
173 real_path
= gdb_realpath (name
);
174 make_cleanup (xfree
, real_path
);
179 /* First, search for an exact match */
181 ALL_SYMTABS (objfile
, s
)
183 if (FILENAME_CMP (name
, s
->filename
) == 0)
188 /* If the user gave us an absolute path, try to find the file in
189 this symtab and use its absolute path. */
191 if (full_path
!= NULL
)
193 const char *fp
= symtab_to_fullname (s
);
195 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
201 if (real_path
!= NULL
)
203 char *fullname
= symtab_to_fullname (s
);
205 if (fullname
!= NULL
)
207 char *rp
= gdb_realpath (fullname
);
209 make_cleanup (xfree
, rp
);
210 if (FILENAME_CMP (real_path
, rp
) == 0)
218 /* Now, search for a matching tail (only if name doesn't have any dirs) */
220 if (lbasename (name
) == name
)
221 ALL_SYMTABS (objfile
, s
)
223 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
227 /* Same search rules as above apply here, but now we look thru the
231 ALL_OBJFILES (objfile
)
234 && objfile
->sf
->qf
->lookup_symtab (objfile
, name
, full_path
, real_path
,
247 /* At this point, we have located the psymtab for this file, but
248 the conversion to a symtab has failed. This usually happens
249 when we are looking up an include file. In this case,
250 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
251 been created. So, we need to run through the symtabs again in
252 order to find the file.
253 XXX - This is a crock, and should be fixed inside of the the
254 symbol parsing routines. */
258 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
259 full method name, which consist of the class name (from T), the unadorned
260 method name from METHOD_ID, and the signature for the specific overload,
261 specified by SIGNATURE_ID. Note that this function is g++ specific. */
264 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
266 int mangled_name_len
;
268 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
269 struct fn_field
*method
= &f
[signature_id
];
270 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
271 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
272 char *newname
= type_name_no_tag (type
);
274 /* Does the form of physname indicate that it is the full mangled name
275 of a constructor (not just the args)? */
276 int is_full_physname_constructor
;
279 int is_destructor
= is_destructor_name (physname
);
280 /* Need a new type prefix. */
281 char *const_prefix
= method
->is_const
? "C" : "";
282 char *volatile_prefix
= method
->is_volatile
? "V" : "";
284 int len
= (newname
== NULL
? 0 : strlen (newname
));
286 /* Nothing to do if physname already contains a fully mangled v3 abi name
287 or an operator name. */
288 if ((physname
[0] == '_' && physname
[1] == 'Z')
289 || is_operator_name (field_name
))
290 return xstrdup (physname
);
292 is_full_physname_constructor
= is_constructor_name (physname
);
295 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
298 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
300 if (is_destructor
|| is_full_physname_constructor
)
302 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
303 strcpy (mangled_name
, physname
);
309 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
311 else if (physname
[0] == 't' || physname
[0] == 'Q')
313 /* The physname for template and qualified methods already includes
315 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
321 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
323 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
324 + strlen (buf
) + len
+ strlen (physname
) + 1);
326 mangled_name
= (char *) xmalloc (mangled_name_len
);
328 mangled_name
[0] = '\0';
330 strcpy (mangled_name
, field_name
);
332 strcat (mangled_name
, buf
);
333 /* If the class doesn't have a name, i.e. newname NULL, then we just
334 mangle it using 0 for the length of the class. Thus it gets mangled
335 as something starting with `::' rather than `classname::'. */
337 strcat (mangled_name
, newname
);
339 strcat (mangled_name
, physname
);
340 return (mangled_name
);
344 /* Initialize the language dependent portion of a symbol
345 depending upon the language for the symbol. */
347 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
348 enum language language
)
350 gsymbol
->language
= language
;
351 if (gsymbol
->language
== language_cplus
352 || gsymbol
->language
== language_d
353 || gsymbol
->language
== language_java
354 || gsymbol
->language
== language_objc
355 || gsymbol
->language
== language_fortran
)
357 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
361 memset (&gsymbol
->language_specific
, 0,
362 sizeof (gsymbol
->language_specific
));
366 /* Functions to initialize a symbol's mangled name. */
368 /* Objects of this type are stored in the demangled name hash table. */
369 struct demangled_name_entry
375 /* Hash function for the demangled name hash. */
377 hash_demangled_name_entry (const void *data
)
379 const struct demangled_name_entry
*e
= data
;
381 return htab_hash_string (e
->mangled
);
384 /* Equality function for the demangled name hash. */
386 eq_demangled_name_entry (const void *a
, const void *b
)
388 const struct demangled_name_entry
*da
= a
;
389 const struct demangled_name_entry
*db
= b
;
391 return strcmp (da
->mangled
, db
->mangled
) == 0;
394 /* Create the hash table used for demangled names. Each hash entry is
395 a pair of strings; one for the mangled name and one for the demangled
396 name. The entry is hashed via just the mangled name. */
399 create_demangled_names_hash (struct objfile
*objfile
)
401 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
402 The hash table code will round this up to the next prime number.
403 Choosing a much larger table size wastes memory, and saves only about
404 1% in symbol reading. */
406 objfile
->demangled_names_hash
= htab_create_alloc
407 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
408 NULL
, xcalloc
, xfree
);
411 /* Try to determine the demangled name for a symbol, based on the
412 language of that symbol. If the language is set to language_auto,
413 it will attempt to find any demangling algorithm that works and
414 then set the language appropriately. The returned name is allocated
415 by the demangler and should be xfree'd. */
418 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
421 char *demangled
= NULL
;
423 if (gsymbol
->language
== language_unknown
)
424 gsymbol
->language
= language_auto
;
426 if (gsymbol
->language
== language_objc
427 || gsymbol
->language
== language_auto
)
430 objc_demangle (mangled
, 0);
431 if (demangled
!= NULL
)
433 gsymbol
->language
= language_objc
;
437 if (gsymbol
->language
== language_cplus
438 || gsymbol
->language
== language_auto
)
441 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
| DMGL_VERBOSE
);
442 if (demangled
!= NULL
)
444 gsymbol
->language
= language_cplus
;
448 if (gsymbol
->language
== language_java
)
451 cplus_demangle (mangled
,
452 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
453 if (demangled
!= NULL
)
455 gsymbol
->language
= language_java
;
459 if (gsymbol
->language
== language_d
460 || gsymbol
->language
== language_auto
)
462 demangled
= d_demangle(mangled
, 0);
463 if (demangled
!= NULL
)
465 gsymbol
->language
= language_d
;
469 /* We could support `gsymbol->language == language_fortran' here to provide
470 module namespaces also for inferiors with only minimal symbol table (ELF
471 symbols). Just the mangling standard is not standardized across compilers
472 and there is no DW_AT_producer available for inferiors with only the ELF
473 symbols to check the mangling kind. */
477 /* Set both the mangled and demangled (if any) names for GSYMBOL based
478 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
479 objfile's obstack; but if COPY_NAME is 0 and if NAME is
480 NUL-terminated, then this function assumes that NAME is already
481 correctly saved (either permanently or with a lifetime tied to the
482 objfile), and it will not be copied.
484 The hash table corresponding to OBJFILE is used, and the memory
485 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
486 so the pointer can be discarded after calling this function. */
488 /* We have to be careful when dealing with Java names: when we run
489 into a Java minimal symbol, we don't know it's a Java symbol, so it
490 gets demangled as a C++ name. This is unfortunate, but there's not
491 much we can do about it: but when demangling partial symbols and
492 regular symbols, we'd better not reuse the wrong demangled name.
493 (See PR gdb/1039.) We solve this by putting a distinctive prefix
494 on Java names when storing them in the hash table. */
496 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
497 don't mind the Java prefix so much: different languages have
498 different demangling requirements, so it's only natural that we
499 need to keep language data around in our demangling cache. But
500 it's not good that the minimal symbol has the wrong demangled name.
501 Unfortunately, I can't think of any easy solution to that
504 #define JAVA_PREFIX "##JAVA$$"
505 #define JAVA_PREFIX_LEN 8
508 symbol_set_names (struct general_symbol_info
*gsymbol
,
509 const char *linkage_name
, int len
, int copy_name
,
510 struct objfile
*objfile
)
512 struct demangled_name_entry
**slot
;
513 /* A 0-terminated copy of the linkage name. */
514 const char *linkage_name_copy
;
515 /* A copy of the linkage name that might have a special Java prefix
516 added to it, for use when looking names up in the hash table. */
517 const char *lookup_name
;
518 /* The length of lookup_name. */
520 struct demangled_name_entry entry
;
522 if (gsymbol
->language
== language_ada
)
524 /* In Ada, we do the symbol lookups using the mangled name, so
525 we can save some space by not storing the demangled name.
527 As a side note, we have also observed some overlap between
528 the C++ mangling and Ada mangling, similarly to what has
529 been observed with Java. Because we don't store the demangled
530 name with the symbol, we don't need to use the same trick
533 gsymbol
->name
= (char *) linkage_name
;
536 gsymbol
->name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
537 memcpy (gsymbol
->name
, linkage_name
, len
);
538 gsymbol
->name
[len
] = '\0';
540 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
545 if (objfile
->demangled_names_hash
== NULL
)
546 create_demangled_names_hash (objfile
);
548 /* The stabs reader generally provides names that are not
549 NUL-terminated; most of the other readers don't do this, so we
550 can just use the given copy, unless we're in the Java case. */
551 if (gsymbol
->language
== language_java
)
555 lookup_len
= len
+ JAVA_PREFIX_LEN
;
556 alloc_name
= alloca (lookup_len
+ 1);
557 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
558 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
559 alloc_name
[lookup_len
] = '\0';
561 lookup_name
= alloc_name
;
562 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
564 else if (linkage_name
[len
] != '\0')
569 alloc_name
= alloca (lookup_len
+ 1);
570 memcpy (alloc_name
, linkage_name
, len
);
571 alloc_name
[lookup_len
] = '\0';
573 lookup_name
= alloc_name
;
574 linkage_name_copy
= alloc_name
;
579 lookup_name
= linkage_name
;
580 linkage_name_copy
= linkage_name
;
583 entry
.mangled
= (char *) lookup_name
;
584 slot
= ((struct demangled_name_entry
**)
585 htab_find_slot (objfile
->demangled_names_hash
,
588 /* If this name is not in the hash table, add it. */
591 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
593 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
595 /* Suppose we have demangled_name==NULL, copy_name==0, and
596 lookup_name==linkage_name. In this case, we already have the
597 mangled name saved, and we don't have a demangled name. So,
598 you might think we could save a little space by not recording
599 this in the hash table at all.
601 It turns out that it is actually important to still save such
602 an entry in the hash table, because storing this name gives
603 us better bcache hit rates for partial symbols. */
604 if (!copy_name
&& lookup_name
== linkage_name
)
606 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
607 offsetof (struct demangled_name_entry
,
609 + demangled_len
+ 1);
610 (*slot
)->mangled
= (char *) lookup_name
;
614 /* If we must copy the mangled name, put it directly after
615 the demangled name so we can have a single
617 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
618 offsetof (struct demangled_name_entry
,
620 + lookup_len
+ demangled_len
+ 2);
621 (*slot
)->mangled
= &((*slot
)->demangled
[demangled_len
+ 1]);
622 strcpy ((*slot
)->mangled
, lookup_name
);
625 if (demangled_name
!= NULL
)
627 strcpy ((*slot
)->demangled
, demangled_name
);
628 xfree (demangled_name
);
631 (*slot
)->demangled
[0] = '\0';
634 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
635 if ((*slot
)->demangled
[0] != '\0')
636 gsymbol
->language_specific
.cplus_specific
.demangled_name
637 = (*slot
)->demangled
;
639 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
642 /* Return the source code name of a symbol. In languages where
643 demangling is necessary, this is the demangled name. */
646 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
648 switch (gsymbol
->language
)
654 case language_fortran
:
655 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
656 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
659 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
660 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
662 return ada_decode_symbol (gsymbol
);
667 return gsymbol
->name
;
670 /* Return the demangled name for a symbol based on the language for
671 that symbol. If no demangled name exists, return NULL. */
673 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
675 switch (gsymbol
->language
)
681 case language_fortran
:
682 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
683 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
686 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
687 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
689 return ada_decode_symbol (gsymbol
);
697 /* Return the search name of a symbol---generally the demangled or
698 linkage name of the symbol, depending on how it will be searched for.
699 If there is no distinct demangled name, then returns the same value
700 (same pointer) as SYMBOL_LINKAGE_NAME. */
702 symbol_search_name (const struct general_symbol_info
*gsymbol
)
704 if (gsymbol
->language
== language_ada
)
705 return gsymbol
->name
;
707 return symbol_natural_name (gsymbol
);
710 /* Initialize the structure fields to zero values. */
712 init_sal (struct symtab_and_line
*sal
)
720 sal
->explicit_pc
= 0;
721 sal
->explicit_line
= 0;
725 /* Return 1 if the two sections are the same, or if they could
726 plausibly be copies of each other, one in an original object
727 file and another in a separated debug file. */
730 matching_obj_sections (struct obj_section
*obj_first
,
731 struct obj_section
*obj_second
)
733 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
734 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
737 /* If they're the same section, then they match. */
741 /* If either is NULL, give up. */
742 if (first
== NULL
|| second
== NULL
)
745 /* This doesn't apply to absolute symbols. */
746 if (first
->owner
== NULL
|| second
->owner
== NULL
)
749 /* If they're in the same object file, they must be different sections. */
750 if (first
->owner
== second
->owner
)
753 /* Check whether the two sections are potentially corresponding. They must
754 have the same size, address, and name. We can't compare section indexes,
755 which would be more reliable, because some sections may have been
757 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
760 /* In-memory addresses may start at a different offset, relativize them. */
761 if (bfd_get_section_vma (first
->owner
, first
)
762 - bfd_get_start_address (first
->owner
)
763 != bfd_get_section_vma (second
->owner
, second
)
764 - bfd_get_start_address (second
->owner
))
767 if (bfd_get_section_name (first
->owner
, first
) == NULL
768 || bfd_get_section_name (second
->owner
, second
) == NULL
769 || strcmp (bfd_get_section_name (first
->owner
, first
),
770 bfd_get_section_name (second
->owner
, second
)) != 0)
773 /* Otherwise check that they are in corresponding objfiles. */
776 if (obj
->obfd
== first
->owner
)
778 gdb_assert (obj
!= NULL
);
780 if (obj
->separate_debug_objfile
!= NULL
781 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
783 if (obj
->separate_debug_objfile_backlink
!= NULL
784 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
791 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
793 struct objfile
*objfile
;
794 struct minimal_symbol
*msymbol
;
796 /* If we know that this is not a text address, return failure. This is
797 necessary because we loop based on texthigh and textlow, which do
798 not include the data ranges. */
799 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
801 && (MSYMBOL_TYPE (msymbol
) == mst_data
802 || MSYMBOL_TYPE (msymbol
) == mst_bss
803 || MSYMBOL_TYPE (msymbol
) == mst_abs
804 || MSYMBOL_TYPE (msymbol
) == mst_file_data
805 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
808 ALL_OBJFILES (objfile
)
810 struct symtab
*result
= NULL
;
813 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
822 /* Debug symbols usually don't have section information. We need to dig that
823 out of the minimal symbols and stash that in the debug symbol. */
826 fixup_section (struct general_symbol_info
*ginfo
,
827 CORE_ADDR addr
, struct objfile
*objfile
)
829 struct minimal_symbol
*msym
;
831 /* First, check whether a minimal symbol with the same name exists
832 and points to the same address. The address check is required
833 e.g. on PowerPC64, where the minimal symbol for a function will
834 point to the function descriptor, while the debug symbol will
835 point to the actual function code. */
836 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
839 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
840 ginfo
->section
= SYMBOL_SECTION (msym
);
844 /* Static, function-local variables do appear in the linker
845 (minimal) symbols, but are frequently given names that won't
846 be found via lookup_minimal_symbol(). E.g., it has been
847 observed in frv-uclinux (ELF) executables that a static,
848 function-local variable named "foo" might appear in the
849 linker symbols as "foo.6" or "foo.3". Thus, there is no
850 point in attempting to extend the lookup-by-name mechanism to
851 handle this case due to the fact that there can be multiple
854 So, instead, search the section table when lookup by name has
855 failed. The ``addr'' and ``endaddr'' fields may have already
856 been relocated. If so, the relocation offset (i.e. the
857 ANOFFSET value) needs to be subtracted from these values when
858 performing the comparison. We unconditionally subtract it,
859 because, when no relocation has been performed, the ANOFFSET
860 value will simply be zero.
862 The address of the symbol whose section we're fixing up HAS
863 NOT BEEN adjusted (relocated) yet. It can't have been since
864 the section isn't yet known and knowing the section is
865 necessary in order to add the correct relocation value. In
866 other words, we wouldn't even be in this function (attempting
867 to compute the section) if it were already known.
869 Note that it is possible to search the minimal symbols
870 (subtracting the relocation value if necessary) to find the
871 matching minimal symbol, but this is overkill and much less
872 efficient. It is not necessary to find the matching minimal
873 symbol, only its section.
875 Note that this technique (of doing a section table search)
876 can fail when unrelocated section addresses overlap. For
877 this reason, we still attempt a lookup by name prior to doing
878 a search of the section table. */
880 struct obj_section
*s
;
882 ALL_OBJFILE_OSECTIONS (objfile
, s
)
884 int idx
= s
->the_bfd_section
->index
;
885 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
887 if (obj_section_addr (s
) - offset
<= addr
888 && addr
< obj_section_endaddr (s
) - offset
)
890 ginfo
->obj_section
= s
;
891 ginfo
->section
= idx
;
899 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
906 if (SYMBOL_OBJ_SECTION (sym
))
909 /* We either have an OBJFILE, or we can get at it from the sym's
910 symtab. Anything else is a bug. */
911 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
914 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
916 /* We should have an objfile by now. */
917 gdb_assert (objfile
);
919 switch (SYMBOL_CLASS (sym
))
923 addr
= SYMBOL_VALUE_ADDRESS (sym
);
926 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
930 /* Nothing else will be listed in the minsyms -- no use looking
935 fixup_section (&sym
->ginfo
, addr
, objfile
);
940 /* Find the definition for a specified symbol name NAME
941 in domain DOMAIN, visible from lexical block BLOCK.
942 Returns the struct symbol pointer, or zero if no symbol is found.
943 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
944 NAME is a field of the current implied argument `this'. If so set
945 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
946 BLOCK_FOUND is set to the block in which NAME is found (in the case of
947 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
949 /* This function has a bunch of loops in it and it would seem to be
950 attractive to put in some QUIT's (though I'm not really sure
951 whether it can run long enough to be really important). But there
952 are a few calls for which it would appear to be bad news to quit
953 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
954 that there is C++ code below which can error(), but that probably
955 doesn't affect these calls since they are looking for a known
956 variable and thus can probably assume it will never hit the C++
960 lookup_symbol_in_language (const char *name
, const struct block
*block
,
961 const domain_enum domain
, enum language lang
,
962 int *is_a_field_of_this
)
964 char *demangled_name
= NULL
;
965 const char *modified_name
= NULL
;
966 struct symbol
*returnval
;
967 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
969 modified_name
= name
;
971 /* If we are using C++, D, or Java, demangle the name before doing a
972 lookup, so we can always binary search. */
973 if (lang
== language_cplus
)
975 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
978 modified_name
= demangled_name
;
979 make_cleanup (xfree
, demangled_name
);
983 /* If we were given a non-mangled name, canonicalize it
984 according to the language (so far only for C++). */
985 demangled_name
= cp_canonicalize_string (name
);
988 modified_name
= demangled_name
;
989 make_cleanup (xfree
, demangled_name
);
993 else if (lang
== language_java
)
995 demangled_name
= cplus_demangle (name
,
996 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
999 modified_name
= demangled_name
;
1000 make_cleanup (xfree
, demangled_name
);
1003 else if (lang
== language_d
)
1005 demangled_name
= d_demangle (name
, 0);
1008 modified_name
= demangled_name
;
1009 make_cleanup (xfree
, demangled_name
);
1013 if (case_sensitivity
== case_sensitive_off
)
1018 len
= strlen (name
);
1019 copy
= (char *) alloca (len
+ 1);
1020 for (i
= 0; i
< len
; i
++)
1021 copy
[i
] = tolower (name
[i
]);
1023 modified_name
= copy
;
1026 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1027 is_a_field_of_this
);
1028 do_cleanups (cleanup
);
1033 /* Behave like lookup_symbol_in_language, but performed with the
1034 current language. */
1037 lookup_symbol (const char *name
, const struct block
*block
,
1038 domain_enum domain
, int *is_a_field_of_this
)
1040 return lookup_symbol_in_language (name
, block
, domain
,
1041 current_language
->la_language
,
1042 is_a_field_of_this
);
1045 /* Behave like lookup_symbol except that NAME is the natural name
1046 of the symbol that we're looking for and, if LINKAGE_NAME is
1047 non-NULL, ensure that the symbol's linkage name matches as
1050 static struct symbol
*
1051 lookup_symbol_aux (const char *name
, const struct block
*block
,
1052 const domain_enum domain
, enum language language
,
1053 int *is_a_field_of_this
)
1056 const struct language_defn
*langdef
;
1057 struct objfile
*objfile
;
1059 /* Make sure we do something sensible with is_a_field_of_this, since
1060 the callers that set this parameter to some non-null value will
1061 certainly use it later and expect it to be either 0 or 1.
1062 If we don't set it, the contents of is_a_field_of_this are
1064 if (is_a_field_of_this
!= NULL
)
1065 *is_a_field_of_this
= 0;
1067 /* Search specified block and its superiors. Don't search
1068 STATIC_BLOCK or GLOBAL_BLOCK. */
1070 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1074 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1075 check to see if NAME is a field of `this'. */
1077 langdef
= language_def (language
);
1079 if (langdef
->la_name_of_this
!= NULL
&& is_a_field_of_this
!= NULL
1082 struct symbol
*sym
= NULL
;
1083 const struct block
*function_block
= block
;
1085 /* 'this' is only defined in the function's block, so find the
1086 enclosing function block. */
1087 for (; function_block
&& !BLOCK_FUNCTION (function_block
);
1088 function_block
= BLOCK_SUPERBLOCK (function_block
));
1090 if (function_block
&& !dict_empty (BLOCK_DICT (function_block
)))
1091 sym
= lookup_block_symbol (function_block
, langdef
->la_name_of_this
,
1095 struct type
*t
= sym
->type
;
1097 /* I'm not really sure that type of this can ever
1098 be typedefed; just be safe. */
1100 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1101 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1102 t
= TYPE_TARGET_TYPE (t
);
1104 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1105 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1106 error (_("Internal error: `%s' is not an aggregate"),
1107 langdef
->la_name_of_this
);
1109 if (check_field (t
, name
))
1111 *is_a_field_of_this
= 1;
1117 /* Now do whatever is appropriate for LANGUAGE to look
1118 up static and global variables. */
1120 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1124 /* Now search all static file-level symbols. Not strictly correct,
1125 but more useful than an error. Do the symtabs first, then check
1126 the psymtabs. If a psymtab indicates the existence of the
1127 desired name as a file-level static, then do psymtab-to-symtab
1128 conversion on the fly and return the found symbol. */
1130 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1134 ALL_OBJFILES (objfile
)
1136 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1144 /* Check to see if the symbol is defined in BLOCK or its superiors.
1145 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1147 static struct symbol
*
1148 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1149 const domain_enum domain
,
1150 enum language language
)
1153 const struct block
*static_block
= block_static_block (block
);
1154 const char *scope
= block_scope (block
);
1156 /* Check if either no block is specified or it's a global block. */
1158 if (static_block
== NULL
)
1161 while (block
!= static_block
)
1163 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1167 if (language
== language_cplus
|| language
== language_fortran
)
1169 sym
= cp_lookup_symbol_imports (scope
,
1179 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1181 block
= BLOCK_SUPERBLOCK (block
);
1184 /* We've reached the edge of the function without finding a result. */
1189 /* Look up OBJFILE to BLOCK. */
1192 lookup_objfile_from_block (const struct block
*block
)
1194 struct objfile
*obj
;
1200 block
= block_global_block (block
);
1201 /* Go through SYMTABS. */
1202 ALL_SYMTABS (obj
, s
)
1203 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1205 if (obj
->separate_debug_objfile_backlink
)
1206 obj
= obj
->separate_debug_objfile_backlink
;
1214 /* Look up a symbol in a block; if found, fixup the symbol, and set
1215 block_found appropriately. */
1218 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1219 const domain_enum domain
)
1223 sym
= lookup_block_symbol (block
, name
, domain
);
1226 block_found
= block
;
1227 return fixup_symbol_section (sym
, NULL
);
1233 /* Check all global symbols in OBJFILE in symtabs and
1237 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1239 const domain_enum domain
)
1241 const struct objfile
*objfile
;
1243 struct blockvector
*bv
;
1244 const struct block
*block
;
1247 for (objfile
= main_objfile
;
1249 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1251 /* Go through symtabs. */
1252 ALL_OBJFILE_SYMTABS (objfile
, s
)
1254 bv
= BLOCKVECTOR (s
);
1255 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1256 sym
= lookup_block_symbol (block
, name
, domain
);
1259 block_found
= block
;
1260 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1264 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1273 /* Check to see if the symbol is defined in one of the symtabs.
1274 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1275 depending on whether or not we want to search global symbols or
1278 static struct symbol
*
1279 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1280 const domain_enum domain
)
1283 struct objfile
*objfile
;
1284 struct blockvector
*bv
;
1285 const struct block
*block
;
1288 ALL_PRIMARY_SYMTABS (objfile
, s
)
1290 bv
= BLOCKVECTOR (s
);
1291 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1292 sym
= lookup_block_symbol (block
, name
, domain
);
1295 block_found
= block
;
1296 return fixup_symbol_section (sym
, objfile
);
1303 /* A helper function for lookup_symbol_aux that interfaces with the
1304 "quick" symbol table functions. */
1306 static struct symbol
*
1307 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1308 const char *name
, const domain_enum domain
)
1310 struct symtab
*symtab
;
1311 struct blockvector
*bv
;
1312 const struct block
*block
;
1317 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1321 bv
= BLOCKVECTOR (symtab
);
1322 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1323 sym
= lookup_block_symbol (block
, name
, domain
);
1326 /* This shouldn't be necessary, but as a last resort try
1327 looking in the statics even though the psymtab claimed
1328 the symbol was global, or vice-versa. It's possible
1329 that the psymtab gets it wrong in some cases. */
1331 /* FIXME: carlton/2002-09-30: Should we really do that?
1332 If that happens, isn't it likely to be a GDB error, in
1333 which case we should fix the GDB error rather than
1334 silently dealing with it here? So I'd vote for
1335 removing the check for the symbol in the other
1337 block
= BLOCKVECTOR_BLOCK (bv
,
1338 kind
== GLOBAL_BLOCK
?
1339 STATIC_BLOCK
: GLOBAL_BLOCK
);
1340 sym
= lookup_block_symbol (block
, name
, domain
);
1342 error (_("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>)."),
1343 kind
== GLOBAL_BLOCK
? "global" : "static",
1344 name
, symtab
->filename
, name
, name
);
1346 return fixup_symbol_section (sym
, objfile
);
1349 /* A default version of lookup_symbol_nonlocal for use by languages
1350 that can't think of anything better to do. This implements the C
1354 basic_lookup_symbol_nonlocal (const char *name
,
1355 const struct block
*block
,
1356 const domain_enum domain
)
1360 /* NOTE: carlton/2003-05-19: The comments below were written when
1361 this (or what turned into this) was part of lookup_symbol_aux;
1362 I'm much less worried about these questions now, since these
1363 decisions have turned out well, but I leave these comments here
1366 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1367 not it would be appropriate to search the current global block
1368 here as well. (That's what this code used to do before the
1369 is_a_field_of_this check was moved up.) On the one hand, it's
1370 redundant with the lookup_symbol_aux_symtabs search that happens
1371 next. On the other hand, if decode_line_1 is passed an argument
1372 like filename:var, then the user presumably wants 'var' to be
1373 searched for in filename. On the third hand, there shouldn't be
1374 multiple global variables all of which are named 'var', and it's
1375 not like decode_line_1 has ever restricted its search to only
1376 global variables in a single filename. All in all, only
1377 searching the static block here seems best: it's correct and it's
1380 /* NOTE: carlton/2002-12-05: There's also a possible performance
1381 issue here: if you usually search for global symbols in the
1382 current file, then it would be slightly better to search the
1383 current global block before searching all the symtabs. But there
1384 are other factors that have a much greater effect on performance
1385 than that one, so I don't think we should worry about that for
1388 sym
= lookup_symbol_static (name
, block
, domain
);
1392 return lookup_symbol_global (name
, block
, domain
);
1395 /* Lookup a symbol in the static block associated to BLOCK, if there
1396 is one; do nothing if BLOCK is NULL or a global block. */
1399 lookup_symbol_static (const char *name
,
1400 const struct block
*block
,
1401 const domain_enum domain
)
1403 const struct block
*static_block
= block_static_block (block
);
1405 if (static_block
!= NULL
)
1406 return lookup_symbol_aux_block (name
, static_block
, domain
);
1411 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1415 lookup_symbol_global (const char *name
,
1416 const struct block
*block
,
1417 const domain_enum domain
)
1419 struct symbol
*sym
= NULL
;
1420 struct objfile
*objfile
= NULL
;
1422 /* Call library-specific lookup procedure. */
1423 objfile
= lookup_objfile_from_block (block
);
1424 if (objfile
!= NULL
)
1425 sym
= solib_global_lookup (objfile
, name
, domain
);
1429 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, domain
);
1433 ALL_OBJFILES (objfile
)
1435 sym
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
, name
, domain
);
1444 symbol_matches_domain (enum language symbol_language
,
1445 domain_enum symbol_domain
,
1448 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1449 A Java class declaration also defines a typedef for the class.
1450 Similarly, any Ada type declaration implicitly defines a typedef. */
1451 if (symbol_language
== language_cplus
1452 || symbol_language
== language_d
1453 || symbol_language
== language_java
1454 || symbol_language
== language_ada
)
1456 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1457 && symbol_domain
== STRUCT_DOMAIN
)
1460 /* For all other languages, strict match is required. */
1461 return (symbol_domain
== domain
);
1464 /* Look up a type named NAME in the struct_domain. The type returned
1465 must not be opaque -- i.e., must have at least one field
1469 lookup_transparent_type (const char *name
)
1471 return current_language
->la_lookup_transparent_type (name
);
1474 /* A helper for basic_lookup_transparent_type that interfaces with the
1475 "quick" symbol table functions. */
1477 static struct type
*
1478 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1481 struct symtab
*symtab
;
1482 struct blockvector
*bv
;
1483 struct block
*block
;
1488 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1492 bv
= BLOCKVECTOR (symtab
);
1493 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1494 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1497 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1499 /* This shouldn't be necessary, but as a last resort
1500 * try looking in the 'other kind' even though the psymtab
1501 * claimed the symbol was one thing. It's possible that
1502 * the psymtab gets it wrong in some cases.
1504 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1505 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1507 /* FIXME; error is wrong in one case */
1508 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1509 %s may be an inlined function, or may be a template function\n\
1510 (if a template, try specifying an instantiation: %s<type>)."),
1511 name
, symtab
->filename
, name
, name
);
1513 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1514 return SYMBOL_TYPE (sym
);
1519 /* The standard implementation of lookup_transparent_type. This code
1520 was modeled on lookup_symbol -- the parts not relevant to looking
1521 up types were just left out. In particular it's assumed here that
1522 types are available in struct_domain and only at file-static or
1526 basic_lookup_transparent_type (const char *name
)
1529 struct symtab
*s
= NULL
;
1530 struct blockvector
*bv
;
1531 struct objfile
*objfile
;
1532 struct block
*block
;
1535 /* Now search all the global symbols. Do the symtab's first, then
1536 check the psymtab's. If a psymtab indicates the existence
1537 of the desired name as a global, then do psymtab-to-symtab
1538 conversion on the fly and return the found symbol. */
1540 ALL_PRIMARY_SYMTABS (objfile
, s
)
1542 bv
= BLOCKVECTOR (s
);
1543 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1544 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1545 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1547 return SYMBOL_TYPE (sym
);
1551 ALL_OBJFILES (objfile
)
1553 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1558 /* Now search the static file-level symbols.
1559 Not strictly correct, but more useful than an error.
1560 Do the symtab's first, then
1561 check the psymtab's. If a psymtab indicates the existence
1562 of the desired name as a file-level static, then do psymtab-to-symtab
1563 conversion on the fly and return the found symbol.
1566 ALL_PRIMARY_SYMTABS (objfile
, s
)
1568 bv
= BLOCKVECTOR (s
);
1569 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1570 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1571 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1573 return SYMBOL_TYPE (sym
);
1577 ALL_OBJFILES (objfile
)
1579 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1584 return (struct type
*) 0;
1588 /* Find the name of the file containing main(). */
1589 /* FIXME: What about languages without main() or specially linked
1590 executables that have no main() ? */
1593 find_main_filename (void)
1595 struct objfile
*objfile
;
1596 char *result
, *name
= main_name ();
1598 ALL_OBJFILES (objfile
)
1602 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1609 /* Search BLOCK for symbol NAME in DOMAIN.
1611 Note that if NAME is the demangled form of a C++ symbol, we will fail
1612 to find a match during the binary search of the non-encoded names, but
1613 for now we don't worry about the slight inefficiency of looking for
1614 a match we'll never find, since it will go pretty quick. Once the
1615 binary search terminates, we drop through and do a straight linear
1616 search on the symbols. Each symbol which is marked as being a ObjC/C++
1617 symbol (language_cplus or language_objc set) has both the encoded and
1618 non-encoded names tested for a match.
1622 lookup_block_symbol (const struct block
*block
, const char *name
,
1623 const domain_enum domain
)
1625 struct dict_iterator iter
;
1628 if (!BLOCK_FUNCTION (block
))
1630 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1632 sym
= dict_iter_name_next (name
, &iter
))
1634 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1635 SYMBOL_DOMAIN (sym
), domain
))
1642 /* Note that parameter symbols do not always show up last in the
1643 list; this loop makes sure to take anything else other than
1644 parameter symbols first; it only uses parameter symbols as a
1645 last resort. Note that this only takes up extra computation
1648 struct symbol
*sym_found
= NULL
;
1650 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1652 sym
= dict_iter_name_next (name
, &iter
))
1654 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1655 SYMBOL_DOMAIN (sym
), domain
))
1658 if (!SYMBOL_IS_ARGUMENT (sym
))
1664 return (sym_found
); /* Will be NULL if not found. */
1668 /* Find the symtab associated with PC and SECTION. Look through the
1669 psymtabs and read in another symtab if necessary. */
1672 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
1675 struct blockvector
*bv
;
1676 struct symtab
*s
= NULL
;
1677 struct symtab
*best_s
= NULL
;
1678 struct objfile
*objfile
;
1679 struct program_space
*pspace
;
1680 CORE_ADDR distance
= 0;
1681 struct minimal_symbol
*msymbol
;
1683 pspace
= current_program_space
;
1685 /* If we know that this is not a text address, return failure. This is
1686 necessary because we loop based on the block's high and low code
1687 addresses, which do not include the data ranges, and because
1688 we call find_pc_sect_psymtab which has a similar restriction based
1689 on the partial_symtab's texthigh and textlow. */
1690 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1692 && (MSYMBOL_TYPE (msymbol
) == mst_data
1693 || MSYMBOL_TYPE (msymbol
) == mst_bss
1694 || MSYMBOL_TYPE (msymbol
) == mst_abs
1695 || MSYMBOL_TYPE (msymbol
) == mst_file_data
1696 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
1699 /* Search all symtabs for the one whose file contains our address, and which
1700 is the smallest of all the ones containing the address. This is designed
1701 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1702 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1703 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1705 This happens for native ecoff format, where code from included files
1706 gets its own symtab. The symtab for the included file should have
1707 been read in already via the dependency mechanism.
1708 It might be swifter to create several symtabs with the same name
1709 like xcoff does (I'm not sure).
1711 It also happens for objfiles that have their functions reordered.
1712 For these, the symtab we are looking for is not necessarily read in. */
1714 ALL_PRIMARY_SYMTABS (objfile
, s
)
1716 bv
= BLOCKVECTOR (s
);
1717 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1719 if (BLOCK_START (b
) <= pc
1720 && BLOCK_END (b
) > pc
1722 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1724 /* For an objfile that has its functions reordered,
1725 find_pc_psymtab will find the proper partial symbol table
1726 and we simply return its corresponding symtab. */
1727 /* In order to better support objfiles that contain both
1728 stabs and coff debugging info, we continue on if a psymtab
1730 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
1732 struct symtab
*result
;
1735 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1744 struct dict_iterator iter
;
1745 struct symbol
*sym
= NULL
;
1747 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1749 fixup_symbol_section (sym
, objfile
);
1750 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
1754 continue; /* no symbol in this symtab matches section */
1756 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1764 ALL_OBJFILES (objfile
)
1766 struct symtab
*result
;
1770 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1781 /* Find the symtab associated with PC. Look through the psymtabs and
1782 read in another symtab if necessary. Backward compatibility, no section */
1785 find_pc_symtab (CORE_ADDR pc
)
1787 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1791 /* Find the source file and line number for a given PC value and SECTION.
1792 Return a structure containing a symtab pointer, a line number,
1793 and a pc range for the entire source line.
1794 The value's .pc field is NOT the specified pc.
1795 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1796 use the line that ends there. Otherwise, in that case, the line
1797 that begins there is used. */
1799 /* The big complication here is that a line may start in one file, and end just
1800 before the start of another file. This usually occurs when you #include
1801 code in the middle of a subroutine. To properly find the end of a line's PC
1802 range, we must search all symtabs associated with this compilation unit, and
1803 find the one whose first PC is closer than that of the next line in this
1806 /* If it's worth the effort, we could be using a binary search. */
1808 struct symtab_and_line
1809 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
1812 struct linetable
*l
;
1815 struct linetable_entry
*item
;
1816 struct symtab_and_line val
;
1817 struct blockvector
*bv
;
1818 struct minimal_symbol
*msymbol
;
1819 struct minimal_symbol
*mfunsym
;
1821 /* Info on best line seen so far, and where it starts, and its file. */
1823 struct linetable_entry
*best
= NULL
;
1824 CORE_ADDR best_end
= 0;
1825 struct symtab
*best_symtab
= 0;
1827 /* Store here the first line number
1828 of a file which contains the line at the smallest pc after PC.
1829 If we don't find a line whose range contains PC,
1830 we will use a line one less than this,
1831 with a range from the start of that file to the first line's pc. */
1832 struct linetable_entry
*alt
= NULL
;
1833 struct symtab
*alt_symtab
= 0;
1835 /* Info on best line seen in this file. */
1837 struct linetable_entry
*prev
;
1839 /* If this pc is not from the current frame,
1840 it is the address of the end of a call instruction.
1841 Quite likely that is the start of the following statement.
1842 But what we want is the statement containing the instruction.
1843 Fudge the pc to make sure we get that. */
1845 init_sal (&val
); /* initialize to zeroes */
1847 val
.pspace
= current_program_space
;
1849 /* It's tempting to assume that, if we can't find debugging info for
1850 any function enclosing PC, that we shouldn't search for line
1851 number info, either. However, GAS can emit line number info for
1852 assembly files --- very helpful when debugging hand-written
1853 assembly code. In such a case, we'd have no debug info for the
1854 function, but we would have line info. */
1859 /* elz: added this because this function returned the wrong
1860 information if the pc belongs to a stub (import/export)
1861 to call a shlib function. This stub would be anywhere between
1862 two functions in the target, and the line info was erroneously
1863 taken to be the one of the line before the pc.
1865 /* RT: Further explanation:
1867 * We have stubs (trampolines) inserted between procedures.
1869 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1870 * exists in the main image.
1872 * In the minimal symbol table, we have a bunch of symbols
1873 * sorted by start address. The stubs are marked as "trampoline",
1874 * the others appear as text. E.g.:
1876 * Minimal symbol table for main image
1877 * main: code for main (text symbol)
1878 * shr1: stub (trampoline symbol)
1879 * foo: code for foo (text symbol)
1881 * Minimal symbol table for "shr1" image:
1883 * shr1: code for shr1 (text symbol)
1886 * So the code below is trying to detect if we are in the stub
1887 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1888 * and if found, do the symbolization from the real-code address
1889 * rather than the stub address.
1891 * Assumptions being made about the minimal symbol table:
1892 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1893 * if we're really in the trampoline. If we're beyond it (say
1894 * we're in "foo" in the above example), it'll have a closer
1895 * symbol (the "foo" text symbol for example) and will not
1896 * return the trampoline.
1897 * 2. lookup_minimal_symbol_text() will find a real text symbol
1898 * corresponding to the trampoline, and whose address will
1899 * be different than the trampoline address. I put in a sanity
1900 * check for the address being the same, to avoid an
1901 * infinite recursion.
1903 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1904 if (msymbol
!= NULL
)
1905 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1907 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
1909 if (mfunsym
== NULL
)
1910 /* I eliminated this warning since it is coming out
1911 * in the following situation:
1912 * gdb shmain // test program with shared libraries
1913 * (gdb) break shr1 // function in shared lib
1914 * Warning: In stub for ...
1915 * In the above situation, the shared lib is not loaded yet,
1916 * so of course we can't find the real func/line info,
1917 * but the "break" still works, and the warning is annoying.
1918 * So I commented out the warning. RT */
1919 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1921 else if (SYMBOL_VALUE_ADDRESS (mfunsym
) == SYMBOL_VALUE_ADDRESS (msymbol
))
1922 /* Avoid infinite recursion */
1923 /* See above comment about why warning is commented out */
1924 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1927 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
1931 s
= find_pc_sect_symtab (pc
, section
);
1934 /* if no symbol information, return previous pc */
1941 bv
= BLOCKVECTOR (s
);
1943 /* Look at all the symtabs that share this blockvector.
1944 They all have the same apriori range, that we found was right;
1945 but they have different line tables. */
1947 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1949 /* Find the best line in this symtab. */
1956 /* I think len can be zero if the symtab lacks line numbers
1957 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1958 I'm not sure which, and maybe it depends on the symbol
1964 item
= l
->item
; /* Get first line info */
1966 /* Is this file's first line closer than the first lines of other files?
1967 If so, record this file, and its first line, as best alternate. */
1968 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1974 for (i
= 0; i
< len
; i
++, item
++)
1976 /* Leave prev pointing to the linetable entry for the last line
1977 that started at or before PC. */
1984 /* At this point, prev points at the line whose start addr is <= pc, and
1985 item points at the next line. If we ran off the end of the linetable
1986 (pc >= start of the last line), then prev == item. If pc < start of
1987 the first line, prev will not be set. */
1989 /* Is this file's best line closer than the best in the other files?
1990 If so, record this file, and its best line, as best so far. Don't
1991 save prev if it represents the end of a function (i.e. line number
1992 0) instead of a real line. */
1994 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
1999 /* Discard BEST_END if it's before the PC of the current BEST. */
2000 if (best_end
<= best
->pc
)
2004 /* If another line (denoted by ITEM) is in the linetable and its
2005 PC is after BEST's PC, but before the current BEST_END, then
2006 use ITEM's PC as the new best_end. */
2007 if (best
&& i
< len
&& item
->pc
> best
->pc
2008 && (best_end
== 0 || best_end
> item
->pc
))
2009 best_end
= item
->pc
;
2014 /* If we didn't find any line number info, just return zeros.
2015 We used to return alt->line - 1 here, but that could be
2016 anywhere; if we don't have line number info for this PC,
2017 don't make some up. */
2020 else if (best
->line
== 0)
2022 /* If our best fit is in a range of PC's for which no line
2023 number info is available (line number is zero) then we didn't
2024 find any valid line information. */
2029 val
.symtab
= best_symtab
;
2030 val
.line
= best
->line
;
2032 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2037 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2039 val
.section
= section
;
2043 /* Backward compatibility (no section) */
2045 struct symtab_and_line
2046 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2048 struct obj_section
*section
;
2050 section
= find_pc_overlay (pc
);
2051 if (pc_in_unmapped_range (pc
, section
))
2052 pc
= overlay_mapped_address (pc
, section
);
2053 return find_pc_sect_line (pc
, section
, notcurrent
);
2056 /* Find line number LINE in any symtab whose name is the same as
2059 If found, return the symtab that contains the linetable in which it was
2060 found, set *INDEX to the index in the linetable of the best entry
2061 found, and set *EXACT_MATCH nonzero if the value returned is an
2064 If not found, return NULL. */
2067 find_line_symtab (struct symtab
*symtab
, int line
,
2068 int *index
, int *exact_match
)
2070 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2072 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2076 struct linetable
*best_linetable
;
2077 struct symtab
*best_symtab
;
2079 /* First try looking it up in the given symtab. */
2080 best_linetable
= LINETABLE (symtab
);
2081 best_symtab
= symtab
;
2082 best_index
= find_line_common (best_linetable
, line
, &exact
);
2083 if (best_index
< 0 || !exact
)
2085 /* Didn't find an exact match. So we better keep looking for
2086 another symtab with the same name. In the case of xcoff,
2087 multiple csects for one source file (produced by IBM's FORTRAN
2088 compiler) produce multiple symtabs (this is unavoidable
2089 assuming csects can be at arbitrary places in memory and that
2090 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2092 /* BEST is the smallest linenumber > LINE so far seen,
2093 or 0 if none has been seen so far.
2094 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2097 struct objfile
*objfile
;
2100 if (best_index
>= 0)
2101 best
= best_linetable
->item
[best_index
].line
;
2105 ALL_OBJFILES (objfile
)
2108 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2112 /* Get symbol full file name if possible. */
2113 symtab_to_fullname (symtab
);
2115 ALL_SYMTABS (objfile
, s
)
2117 struct linetable
*l
;
2120 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2122 if (symtab
->fullname
!= NULL
2123 && symtab_to_fullname (s
) != NULL
2124 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2127 ind
= find_line_common (l
, line
, &exact
);
2137 if (best
== 0 || l
->item
[ind
].line
< best
)
2139 best
= l
->item
[ind
].line
;
2152 *index
= best_index
;
2154 *exact_match
= exact
;
2159 /* Set the PC value for a given source file and line number and return true.
2160 Returns zero for invalid line number (and sets the PC to 0).
2161 The source file is specified with a struct symtab. */
2164 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2166 struct linetable
*l
;
2173 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2176 l
= LINETABLE (symtab
);
2177 *pc
= l
->item
[ind
].pc
;
2184 /* Find the range of pc values in a line.
2185 Store the starting pc of the line into *STARTPTR
2186 and the ending pc (start of next line) into *ENDPTR.
2187 Returns 1 to indicate success.
2188 Returns 0 if could not find the specified line. */
2191 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2194 CORE_ADDR startaddr
;
2195 struct symtab_and_line found_sal
;
2198 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2201 /* This whole function is based on address. For example, if line 10 has
2202 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2203 "info line *0x123" should say the line goes from 0x100 to 0x200
2204 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2205 This also insures that we never give a range like "starts at 0x134
2206 and ends at 0x12c". */
2208 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2209 if (found_sal
.line
!= sal
.line
)
2211 /* The specified line (sal) has zero bytes. */
2212 *startptr
= found_sal
.pc
;
2213 *endptr
= found_sal
.pc
;
2217 *startptr
= found_sal
.pc
;
2218 *endptr
= found_sal
.end
;
2223 /* Given a line table and a line number, return the index into the line
2224 table for the pc of the nearest line whose number is >= the specified one.
2225 Return -1 if none is found. The value is >= 0 if it is an index.
2227 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2230 find_line_common (struct linetable
*l
, int lineno
,
2236 /* BEST is the smallest linenumber > LINENO so far seen,
2237 or 0 if none has been seen so far.
2238 BEST_INDEX identifies the item for it. */
2240 int best_index
= -1;
2251 for (i
= 0; i
< len
; i
++)
2253 struct linetable_entry
*item
= &(l
->item
[i
]);
2255 if (item
->line
== lineno
)
2257 /* Return the first (lowest address) entry which matches. */
2262 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2269 /* If we got here, we didn't get an exact match. */
2274 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2276 struct symtab_and_line sal
;
2278 sal
= find_pc_line (pc
, 0);
2281 return sal
.symtab
!= 0;
2284 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2285 address for that function that has an entry in SYMTAB's line info
2286 table. If such an entry cannot be found, return FUNC_ADDR
2289 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2291 CORE_ADDR func_start
, func_end
;
2292 struct linetable
*l
;
2295 /* Give up if this symbol has no lineinfo table. */
2296 l
= LINETABLE (symtab
);
2300 /* Get the range for the function's PC values, or give up if we
2301 cannot, for some reason. */
2302 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2305 /* Linetable entries are ordered by PC values, see the commentary in
2306 symtab.h where `struct linetable' is defined. Thus, the first
2307 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2308 address we are looking for. */
2309 for (i
= 0; i
< l
->nitems
; i
++)
2311 struct linetable_entry
*item
= &(l
->item
[i
]);
2313 /* Don't use line numbers of zero, they mark special entries in
2314 the table. See the commentary on symtab.h before the
2315 definition of struct linetable. */
2316 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2323 /* Given a function symbol SYM, find the symtab and line for the start
2325 If the argument FUNFIRSTLINE is nonzero, we want the first line
2326 of real code inside the function. */
2328 struct symtab_and_line
2329 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2331 struct symtab_and_line sal
;
2333 fixup_symbol_section (sym
, NULL
);
2334 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2335 SYMBOL_OBJ_SECTION (sym
), 0);
2337 /* We always should have a line for the function start address.
2338 If we don't, something is odd. Create a plain SAL refering
2339 just the PC and hope that skip_prologue_sal (if requested)
2340 can find a line number for after the prologue. */
2341 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2344 sal
.pspace
= current_program_space
;
2345 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2346 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2350 skip_prologue_sal (&sal
);
2355 /* Adjust SAL to the first instruction past the function prologue.
2356 If the PC was explicitly specified, the SAL is not changed.
2357 If the line number was explicitly specified, at most the SAL's PC
2358 is updated. If SAL is already past the prologue, then do nothing. */
2360 skip_prologue_sal (struct symtab_and_line
*sal
)
2363 struct symtab_and_line start_sal
;
2364 struct cleanup
*old_chain
;
2366 struct obj_section
*section
;
2368 struct objfile
*objfile
;
2369 struct gdbarch
*gdbarch
;
2370 struct block
*b
, *function_block
;
2372 /* Do not change the SAL is PC was specified explicitly. */
2373 if (sal
->explicit_pc
)
2376 old_chain
= save_current_space_and_thread ();
2377 switch_to_program_space_and_thread (sal
->pspace
);
2379 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2382 fixup_symbol_section (sym
, NULL
);
2384 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2385 section
= SYMBOL_OBJ_SECTION (sym
);
2386 name
= SYMBOL_LINKAGE_NAME (sym
);
2387 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2391 struct minimal_symbol
*msymbol
2392 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2394 if (msymbol
== NULL
)
2396 do_cleanups (old_chain
);
2400 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2401 section
= SYMBOL_OBJ_SECTION (msymbol
);
2402 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2403 objfile
= msymbol_objfile (msymbol
);
2406 gdbarch
= get_objfile_arch (objfile
);
2408 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2409 so that gdbarch_skip_prologue has something unique to work on. */
2410 if (section_is_overlay (section
) && !section_is_mapped (section
))
2411 pc
= overlay_unmapped_address (pc
, section
);
2413 /* Skip "first line" of function (which is actually its prologue). */
2414 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2415 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2417 /* For overlays, map pc back into its mapped VMA range. */
2418 pc
= overlay_mapped_address (pc
, section
);
2420 /* Calculate line number. */
2421 start_sal
= find_pc_sect_line (pc
, section
, 0);
2423 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2424 line is still part of the same function. */
2425 if (start_sal
.pc
!= pc
2426 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2427 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2428 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2429 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2431 /* First pc of next line */
2433 /* Recalculate the line number (might not be N+1). */
2434 start_sal
= find_pc_sect_line (pc
, section
, 0);
2437 /* On targets with executable formats that don't have a concept of
2438 constructors (ELF with .init has, PE doesn't), gcc emits a call
2439 to `__main' in `main' between the prologue and before user
2441 if (gdbarch_skip_main_prologue_p (gdbarch
)
2442 && name
&& strcmp (name
, "main") == 0)
2444 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2445 /* Recalculate the line number (might not be N+1). */
2446 start_sal
= find_pc_sect_line (pc
, section
, 0);
2449 /* If we still don't have a valid source line, try to find the first
2450 PC in the lineinfo table that belongs to the same function. This
2451 happens with COFF debug info, which does not seem to have an
2452 entry in lineinfo table for the code after the prologue which has
2453 no direct relation to source. For example, this was found to be
2454 the case with the DJGPP target using "gcc -gcoff" when the
2455 compiler inserted code after the prologue to make sure the stack
2457 if (sym
&& start_sal
.symtab
== NULL
)
2459 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2460 /* Recalculate the line number. */
2461 start_sal
= find_pc_sect_line (pc
, section
, 0);
2464 do_cleanups (old_chain
);
2466 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2467 forward SAL to the end of the prologue. */
2472 sal
->section
= section
;
2474 /* Unless the explicit_line flag was set, update the SAL line
2475 and symtab to correspond to the modified PC location. */
2476 if (sal
->explicit_line
)
2479 sal
->symtab
= start_sal
.symtab
;
2480 sal
->line
= start_sal
.line
;
2481 sal
->end
= start_sal
.end
;
2483 /* Check if we are now inside an inlined function. If we can,
2484 use the call site of the function instead. */
2485 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2486 function_block
= NULL
;
2489 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2491 else if (BLOCK_FUNCTION (b
) != NULL
)
2493 b
= BLOCK_SUPERBLOCK (b
);
2495 if (function_block
!= NULL
2496 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2498 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2499 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2503 /* If P is of the form "operator[ \t]+..." where `...' is
2504 some legitimate operator text, return a pointer to the
2505 beginning of the substring of the operator text.
2506 Otherwise, return "". */
2508 operator_chars (char *p
, char **end
)
2511 if (strncmp (p
, "operator", 8))
2515 /* Don't get faked out by `operator' being part of a longer
2517 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2520 /* Allow some whitespace between `operator' and the operator symbol. */
2521 while (*p
== ' ' || *p
== '\t')
2524 /* Recognize 'operator TYPENAME'. */
2526 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2530 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2539 case '\\': /* regexp quoting */
2542 if (p
[2] == '=') /* 'operator\*=' */
2544 else /* 'operator\*' */
2548 else if (p
[1] == '[')
2551 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2552 else if (p
[2] == '\\' && p
[3] == ']')
2554 *end
= p
+ 4; /* 'operator\[\]' */
2558 error (_("nothing is allowed between '[' and ']'"));
2562 /* Gratuitous qoute: skip it and move on. */
2584 if (p
[0] == '-' && p
[1] == '>')
2586 /* Struct pointer member operator 'operator->'. */
2589 *end
= p
+ 3; /* 'operator->*' */
2592 else if (p
[2] == '\\')
2594 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2599 *end
= p
+ 2; /* 'operator->' */
2603 if (p
[1] == '=' || p
[1] == p
[0])
2614 error (_("`operator ()' must be specified without whitespace in `()'"));
2619 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2624 error (_("`operator []' must be specified without whitespace in `[]'"));
2628 error (_("`operator %s' not supported"), p
);
2637 /* If FILE is not already in the table of files, return zero;
2638 otherwise return non-zero. Optionally add FILE to the table if ADD
2639 is non-zero. If *FIRST is non-zero, forget the old table
2642 filename_seen (const char *file
, int add
, int *first
)
2644 /* Table of files seen so far. */
2645 static const char **tab
= NULL
;
2646 /* Allocated size of tab in elements.
2647 Start with one 256-byte block (when using GNU malloc.c).
2648 24 is the malloc overhead when range checking is in effect. */
2649 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2650 /* Current size of tab in elements. */
2651 static int tab_cur_size
;
2657 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2661 /* Is FILE in tab? */
2662 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2663 if (strcmp (*p
, file
) == 0)
2666 /* No; maybe add it to tab. */
2669 if (tab_cur_size
== tab_alloc_size
)
2671 tab_alloc_size
*= 2;
2672 tab
= (const char **) xrealloc ((char *) tab
,
2673 tab_alloc_size
* sizeof (*tab
));
2675 tab
[tab_cur_size
++] = file
;
2681 /* Slave routine for sources_info. Force line breaks at ,'s.
2682 NAME is the name to print and *FIRST is nonzero if this is the first
2683 name printed. Set *FIRST to zero. */
2685 output_source_filename (const char *name
, int *first
)
2687 /* Since a single source file can result in several partial symbol
2688 tables, we need to avoid printing it more than once. Note: if
2689 some of the psymtabs are read in and some are not, it gets
2690 printed both under "Source files for which symbols have been
2691 read" and "Source files for which symbols will be read in on
2692 demand". I consider this a reasonable way to deal with the
2693 situation. I'm not sure whether this can also happen for
2694 symtabs; it doesn't hurt to check. */
2696 /* Was NAME already seen? */
2697 if (filename_seen (name
, 1, first
))
2699 /* Yes; don't print it again. */
2702 /* No; print it and reset *FIRST. */
2709 printf_filtered (", ");
2713 fputs_filtered (name
, gdb_stdout
);
2716 /* A callback for map_partial_symbol_filenames. */
2718 output_partial_symbol_filename (const char *fullname
, const char *filename
,
2721 output_source_filename (fullname
? fullname
: filename
, data
);
2725 sources_info (char *ignore
, int from_tty
)
2728 struct objfile
*objfile
;
2731 if (!have_full_symbols () && !have_partial_symbols ())
2733 error (_("No symbol table is loaded. Use the \"file\" command."));
2736 printf_filtered ("Source files for which symbols have been read in:\n\n");
2739 ALL_SYMTABS (objfile
, s
)
2741 const char *fullname
= symtab_to_fullname (s
);
2743 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2745 printf_filtered ("\n\n");
2747 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2750 map_partial_symbol_filenames (output_partial_symbol_filename
, &first
);
2751 printf_filtered ("\n");
2755 file_matches (const char *file
, char *files
[], int nfiles
)
2759 if (file
!= NULL
&& nfiles
!= 0)
2761 for (i
= 0; i
< nfiles
; i
++)
2763 if (strcmp (files
[i
], lbasename (file
)) == 0)
2767 else if (nfiles
== 0)
2772 /* Free any memory associated with a search. */
2774 free_search_symbols (struct symbol_search
*symbols
)
2776 struct symbol_search
*p
;
2777 struct symbol_search
*next
;
2779 for (p
= symbols
; p
!= NULL
; p
= next
)
2787 do_free_search_symbols_cleanup (void *symbols
)
2789 free_search_symbols (symbols
);
2793 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2795 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2798 /* Helper function for sort_search_symbols and qsort. Can only
2799 sort symbols, not minimal symbols. */
2801 compare_search_syms (const void *sa
, const void *sb
)
2803 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2804 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2806 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2807 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2810 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2811 prevtail where it is, but update its next pointer to point to
2812 the first of the sorted symbols. */
2813 static struct symbol_search
*
2814 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2816 struct symbol_search
**symbols
, *symp
, *old_next
;
2819 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2821 symp
= prevtail
->next
;
2822 for (i
= 0; i
< nfound
; i
++)
2827 /* Generally NULL. */
2830 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2831 compare_search_syms
);
2834 for (i
= 0; i
< nfound
; i
++)
2836 symp
->next
= symbols
[i
];
2839 symp
->next
= old_next
;
2845 /* An object of this type is passed as the user_data to the
2846 expand_symtabs_matching method. */
2847 struct search_symbols_data
2854 /* A callback for expand_symtabs_matching. */
2856 search_symbols_file_matches (const char *filename
, void *user_data
)
2858 struct search_symbols_data
*data
= user_data
;
2860 return file_matches (filename
, data
->files
, data
->nfiles
);
2863 /* A callback for expand_symtabs_matching. */
2865 search_symbols_name_matches (const char *symname
, void *user_data
)
2867 struct search_symbols_data
*data
= user_data
;
2869 return data
->regexp
== NULL
|| re_exec (symname
);
2872 /* Search the symbol table for matches to the regular expression REGEXP,
2873 returning the results in *MATCHES.
2875 Only symbols of KIND are searched:
2876 FUNCTIONS_DOMAIN - search all functions
2877 TYPES_DOMAIN - search all type names
2878 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2879 and constants (enums)
2881 free_search_symbols should be called when *MATCHES is no longer needed.
2883 The results are sorted locally; each symtab's global and static blocks are
2884 separately alphabetized.
2887 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2888 struct symbol_search
**matches
)
2891 struct blockvector
*bv
;
2894 struct dict_iterator iter
;
2896 struct objfile
*objfile
;
2897 struct minimal_symbol
*msymbol
;
2900 static enum minimal_symbol_type types
[]
2901 = {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2902 static enum minimal_symbol_type types2
[]
2903 = {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2904 static enum minimal_symbol_type types3
[]
2905 = {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2906 static enum minimal_symbol_type types4
[]
2907 = {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2908 enum minimal_symbol_type ourtype
;
2909 enum minimal_symbol_type ourtype2
;
2910 enum minimal_symbol_type ourtype3
;
2911 enum minimal_symbol_type ourtype4
;
2912 struct symbol_search
*sr
;
2913 struct symbol_search
*psr
;
2914 struct symbol_search
*tail
;
2915 struct cleanup
*old_chain
= NULL
;
2916 struct search_symbols_data datum
;
2918 if (kind
< VARIABLES_DOMAIN
)
2919 error (_("must search on specific domain"));
2921 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2922 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2923 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2924 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2926 sr
= *matches
= NULL
;
2931 /* Make sure spacing is right for C++ operators.
2932 This is just a courtesy to make the matching less sensitive
2933 to how many spaces the user leaves between 'operator'
2934 and <TYPENAME> or <OPERATOR>. */
2936 char *opname
= operator_chars (regexp
, &opend
);
2940 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2942 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2944 /* There should 1 space between 'operator' and 'TYPENAME'. */
2945 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2950 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2951 if (opname
[-1] == ' ')
2954 /* If wrong number of spaces, fix it. */
2957 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2959 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2964 if (0 != (val
= re_comp (regexp
)))
2965 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2968 /* Search through the partial symtabs *first* for all symbols
2969 matching the regexp. That way we don't have to reproduce all of
2970 the machinery below. */
2972 datum
.nfiles
= nfiles
;
2973 datum
.files
= files
;
2974 datum
.regexp
= regexp
;
2975 ALL_OBJFILES (objfile
)
2978 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
2979 search_symbols_file_matches
,
2980 search_symbols_name_matches
,
2985 /* Here, we search through the minimal symbol tables for functions
2986 and variables that match, and force their symbols to be read.
2987 This is in particular necessary for demangled variable names,
2988 which are no longer put into the partial symbol tables.
2989 The symbol will then be found during the scan of symtabs below.
2991 For functions, find_pc_symtab should succeed if we have debug info
2992 for the function, for variables we have to call lookup_symbol
2993 to determine if the variable has debug info.
2994 If the lookup fails, set found_misc so that we will rescan to print
2995 any matching symbols without debug info.
2998 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3000 ALL_MSYMBOLS (objfile
, msymbol
)
3004 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3005 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3006 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3007 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3010 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3012 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3014 /* FIXME: carlton/2003-02-04: Given that the
3015 semantics of lookup_symbol keeps on changing
3016 slightly, it would be a nice idea if we had a
3017 function lookup_symbol_minsym that found the
3018 symbol associated to a given minimal symbol (if
3020 if (kind
== FUNCTIONS_DOMAIN
3021 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3022 (struct block
*) NULL
,
3032 ALL_PRIMARY_SYMTABS (objfile
, s
)
3034 bv
= BLOCKVECTOR (s
);
3035 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3037 struct symbol_search
*prevtail
= tail
;
3040 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3041 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3043 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3047 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3049 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3050 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3051 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3052 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3053 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3054 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3055 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3058 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3060 psr
->symtab
= real_symtab
;
3062 psr
->msymbol
= NULL
;
3074 if (prevtail
== NULL
)
3076 struct symbol_search dummy
;
3079 tail
= sort_search_symbols (&dummy
, nfound
);
3082 old_chain
= make_cleanup_free_search_symbols (sr
);
3085 tail
= sort_search_symbols (prevtail
, nfound
);
3090 /* If there are no eyes, avoid all contact. I mean, if there are
3091 no debug symbols, then print directly from the msymbol_vector. */
3093 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3095 ALL_MSYMBOLS (objfile
, msymbol
)
3099 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3100 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3101 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3102 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3105 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3107 /* Functions: Look up by address. */
3108 if (kind
!= FUNCTIONS_DOMAIN
||
3109 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3111 /* Variables/Absolutes: Look up by name */
3112 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3113 (struct block
*) NULL
, VAR_DOMAIN
, 0)
3117 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3119 psr
->msymbol
= msymbol
;
3126 old_chain
= make_cleanup_free_search_symbols (sr
);
3140 discard_cleanups (old_chain
);
3143 /* Helper function for symtab_symbol_info, this function uses
3144 the data returned from search_symbols() to print information
3145 regarding the match to gdb_stdout.
3148 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3149 int block
, char *last
)
3151 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3153 fputs_filtered ("\nFile ", gdb_stdout
);
3154 fputs_filtered (s
->filename
, gdb_stdout
);
3155 fputs_filtered (":\n", gdb_stdout
);
3158 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3159 printf_filtered ("static ");
3161 /* Typedef that is not a C++ class */
3162 if (kind
== TYPES_DOMAIN
3163 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3164 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3165 /* variable, func, or typedef-that-is-c++-class */
3166 else if (kind
< TYPES_DOMAIN
||
3167 (kind
== TYPES_DOMAIN
&&
3168 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3170 type_print (SYMBOL_TYPE (sym
),
3171 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3172 ? "" : SYMBOL_PRINT_NAME (sym
)),
3175 printf_filtered (";\n");
3179 /* This help function for symtab_symbol_info() prints information
3180 for non-debugging symbols to gdb_stdout.
3183 print_msymbol_info (struct minimal_symbol
*msymbol
)
3185 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3188 if (gdbarch_addr_bit (gdbarch
) <= 32)
3189 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3190 & (CORE_ADDR
) 0xffffffff,
3193 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3195 printf_filtered ("%s %s\n",
3196 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3199 /* This is the guts of the commands "info functions", "info types", and
3200 "info variables". It calls search_symbols to find all matches and then
3201 print_[m]symbol_info to print out some useful information about the
3205 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3207 static char *classnames
[] = {"variable", "function", "type", "method"};
3208 struct symbol_search
*symbols
;
3209 struct symbol_search
*p
;
3210 struct cleanup
*old_chain
;
3211 char *last_filename
= NULL
;
3214 /* must make sure that if we're interrupted, symbols gets freed */
3215 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3216 old_chain
= make_cleanup_free_search_symbols (symbols
);
3218 printf_filtered (regexp
3219 ? "All %ss matching regular expression \"%s\":\n"
3220 : "All defined %ss:\n",
3221 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3223 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3227 if (p
->msymbol
!= NULL
)
3231 printf_filtered ("\nNon-debugging symbols:\n");
3234 print_msymbol_info (p
->msymbol
);
3238 print_symbol_info (kind
,
3243 last_filename
= p
->symtab
->filename
;
3247 do_cleanups (old_chain
);
3251 variables_info (char *regexp
, int from_tty
)
3253 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3257 functions_info (char *regexp
, int from_tty
)
3259 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3264 types_info (char *regexp
, int from_tty
)
3266 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3269 /* Breakpoint all functions matching regular expression. */
3272 rbreak_command_wrapper (char *regexp
, int from_tty
)
3274 rbreak_command (regexp
, from_tty
);
3277 /* A cleanup function that calls end_rbreak_breakpoints. */
3280 do_end_rbreak_breakpoints (void *ignore
)
3282 end_rbreak_breakpoints ();
3286 rbreak_command (char *regexp
, int from_tty
)
3288 struct symbol_search
*ss
;
3289 struct symbol_search
*p
;
3290 struct cleanup
*old_chain
;
3291 char *string
= NULL
;
3293 char **files
= NULL
;
3298 char *colon
= strchr (regexp
, ':');
3300 if (colon
&& *(colon
+ 1) != ':')
3305 colon_index
= colon
- regexp
;
3306 file_name
= alloca (colon_index
+ 1);
3307 memcpy (file_name
, regexp
, colon_index
);
3308 file_name
[colon_index
--] = 0;
3309 while (isspace (file_name
[colon_index
]))
3310 file_name
[colon_index
--] = 0;
3314 while (isspace (*regexp
)) regexp
++;
3318 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3319 old_chain
= make_cleanup_free_search_symbols (ss
);
3320 make_cleanup (free_current_contents
, &string
);
3322 start_rbreak_breakpoints ();
3323 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3324 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3326 if (p
->msymbol
== NULL
)
3328 int newlen
= (strlen (p
->symtab
->filename
)
3329 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3334 string
= xrealloc (string
, newlen
);
3337 strcpy (string
, p
->symtab
->filename
);
3338 strcat (string
, ":'");
3339 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3340 strcat (string
, "'");
3341 break_command (string
, from_tty
);
3342 print_symbol_info (FUNCTIONS_DOMAIN
,
3346 p
->symtab
->filename
);
3350 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3354 string
= xrealloc (string
, newlen
);
3357 strcpy (string
, "'");
3358 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3359 strcat (string
, "'");
3361 break_command (string
, from_tty
);
3362 printf_filtered ("<function, no debug info> %s;\n",
3363 SYMBOL_PRINT_NAME (p
->msymbol
));
3367 do_cleanups (old_chain
);
3371 /* Helper routine for make_symbol_completion_list. */
3373 static int return_val_size
;
3374 static int return_val_index
;
3375 static char **return_val
;
3377 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3378 completion_list_add_name \
3379 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3381 /* Test to see if the symbol specified by SYMNAME (which is already
3382 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3383 characters. If so, add it to the current completion list. */
3386 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3387 char *text
, char *word
)
3391 /* clip symbols that cannot match */
3393 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3398 /* We have a match for a completion, so add SYMNAME to the current list
3399 of matches. Note that the name is moved to freshly malloc'd space. */
3404 if (word
== sym_text
)
3406 new = xmalloc (strlen (symname
) + 5);
3407 strcpy (new, symname
);
3409 else if (word
> sym_text
)
3411 /* Return some portion of symname. */
3412 new = xmalloc (strlen (symname
) + 5);
3413 strcpy (new, symname
+ (word
- sym_text
));
3417 /* Return some of SYM_TEXT plus symname. */
3418 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3419 strncpy (new, word
, sym_text
- word
);
3420 new[sym_text
- word
] = '\0';
3421 strcat (new, symname
);
3424 if (return_val_index
+ 3 > return_val_size
)
3426 newsize
= (return_val_size
*= 2) * sizeof (char *);
3427 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3429 return_val
[return_val_index
++] = new;
3430 return_val
[return_val_index
] = NULL
;
3434 /* ObjC: In case we are completing on a selector, look as the msymbol
3435 again and feed all the selectors into the mill. */
3438 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3439 int sym_text_len
, char *text
, char *word
)
3441 static char *tmp
= NULL
;
3442 static unsigned int tmplen
= 0;
3444 char *method
, *category
, *selector
;
3447 method
= SYMBOL_NATURAL_NAME (msymbol
);
3449 /* Is it a method? */
3450 if ((method
[0] != '-') && (method
[0] != '+'))
3453 if (sym_text
[0] == '[')
3454 /* Complete on shortened method method. */
3455 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3457 while ((strlen (method
) + 1) >= tmplen
)
3463 tmp
= xrealloc (tmp
, tmplen
);
3465 selector
= strchr (method
, ' ');
3466 if (selector
!= NULL
)
3469 category
= strchr (method
, '(');
3471 if ((category
!= NULL
) && (selector
!= NULL
))
3473 memcpy (tmp
, method
, (category
- method
));
3474 tmp
[category
- method
] = ' ';
3475 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3476 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3477 if (sym_text
[0] == '[')
3478 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3481 if (selector
!= NULL
)
3483 /* Complete on selector only. */
3484 strcpy (tmp
, selector
);
3485 tmp2
= strchr (tmp
, ']');
3489 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3493 /* Break the non-quoted text based on the characters which are in
3494 symbols. FIXME: This should probably be language-specific. */
3497 language_search_unquoted_string (char *text
, char *p
)
3499 for (; p
> text
; --p
)
3501 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3505 if ((current_language
->la_language
== language_objc
))
3507 if (p
[-1] == ':') /* might be part of a method name */
3509 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3510 p
-= 2; /* beginning of a method name */
3511 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3512 { /* might be part of a method name */
3515 /* Seeing a ' ' or a '(' is not conclusive evidence
3516 that we are in the middle of a method name. However,
3517 finding "-[" or "+[" should be pretty un-ambiguous.
3518 Unfortunately we have to find it now to decide. */
3521 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3522 t
[-1] == ' ' || t
[-1] == ':' ||
3523 t
[-1] == '(' || t
[-1] == ')')
3528 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3529 p
= t
- 2; /* method name detected */
3530 /* else we leave with p unchanged */
3540 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
3541 int sym_text_len
, char *text
, char *word
)
3543 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3545 struct type
*t
= SYMBOL_TYPE (sym
);
3546 enum type_code c
= TYPE_CODE (t
);
3549 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3550 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3551 if (TYPE_FIELD_NAME (t
, j
))
3552 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3553 sym_text
, sym_text_len
, text
, word
);
3557 /* Type of the user_data argument passed to add_macro_name or
3558 add_partial_symbol_name. The contents are simply whatever is
3559 needed by completion_list_add_name. */
3560 struct add_name_data
3568 /* A callback used with macro_for_each and macro_for_each_in_scope.
3569 This adds a macro's name to the current completion list. */
3571 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
3574 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3576 completion_list_add_name ((char *) name
,
3577 datum
->sym_text
, datum
->sym_text_len
,
3578 datum
->text
, datum
->word
);
3581 /* A callback for map_partial_symbol_names. */
3583 add_partial_symbol_name (const char *name
, void *user_data
)
3585 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3587 completion_list_add_name ((char *) name
,
3588 datum
->sym_text
, datum
->sym_text_len
,
3589 datum
->text
, datum
->word
);
3593 default_make_symbol_completion_list_break_on (char *text
, char *word
,
3594 const char *break_on
)
3596 /* Problem: All of the symbols have to be copied because readline
3597 frees them. I'm not going to worry about this; hopefully there
3598 won't be that many. */
3602 struct minimal_symbol
*msymbol
;
3603 struct objfile
*objfile
;
3605 const struct block
*surrounding_static_block
, *surrounding_global_block
;
3606 struct dict_iterator iter
;
3607 /* The symbol we are completing on. Points in same buffer as text. */
3609 /* Length of sym_text. */
3611 struct add_name_data datum
;
3613 /* Now look for the symbol we are supposed to complete on. */
3617 char *quote_pos
= NULL
;
3619 /* First see if this is a quoted string. */
3621 for (p
= text
; *p
!= '\0'; ++p
)
3623 if (quote_found
!= '\0')
3625 if (*p
== quote_found
)
3626 /* Found close quote. */
3628 else if (*p
== '\\' && p
[1] == quote_found
)
3629 /* A backslash followed by the quote character
3630 doesn't end the string. */
3633 else if (*p
== '\'' || *p
== '"')
3639 if (quote_found
== '\'')
3640 /* A string within single quotes can be a symbol, so complete on it. */
3641 sym_text
= quote_pos
+ 1;
3642 else if (quote_found
== '"')
3643 /* A double-quoted string is never a symbol, nor does it make sense
3644 to complete it any other way. */
3646 return_val
= (char **) xmalloc (sizeof (char *));
3647 return_val
[0] = NULL
;
3652 /* It is not a quoted string. Break it based on the characters
3653 which are in symbols. */
3656 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
3657 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
3666 sym_text_len
= strlen (sym_text
);
3668 return_val_size
= 100;
3669 return_val_index
= 0;
3670 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3671 return_val
[0] = NULL
;
3673 datum
.sym_text
= sym_text
;
3674 datum
.sym_text_len
= sym_text_len
;
3678 /* Look through the partial symtabs for all symbols which begin
3679 by matching SYM_TEXT. Add each one that you find to the list. */
3680 map_partial_symbol_names (add_partial_symbol_name
, &datum
);
3682 /* At this point scan through the misc symbol vectors and add each
3683 symbol you find to the list. Eventually we want to ignore
3684 anything that isn't a text symbol (everything else will be
3685 handled by the psymtab code above). */
3687 ALL_MSYMBOLS (objfile
, msymbol
)
3690 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3692 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3695 /* Search upwards from currently selected frame (so that we can
3696 complete on local vars). Also catch fields of types defined in
3697 this places which match our text string. Only complete on types
3698 visible from current context. */
3700 b
= get_selected_block (0);
3701 surrounding_static_block
= block_static_block (b
);
3702 surrounding_global_block
= block_global_block (b
);
3703 if (surrounding_static_block
!= NULL
)
3704 while (b
!= surrounding_static_block
)
3708 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3710 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
3712 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
3716 /* Stop when we encounter an enclosing function. Do not stop for
3717 non-inlined functions - the locals of the enclosing function
3718 are in scope for a nested function. */
3719 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3721 b
= BLOCK_SUPERBLOCK (b
);
3724 /* Add fields from the file's types; symbols will be added below. */
3726 if (surrounding_static_block
!= NULL
)
3727 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
3728 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
3730 if (surrounding_global_block
!= NULL
)
3731 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
3732 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
3734 /* Go through the symtabs and check the externs and statics for
3735 symbols which match. */
3737 ALL_PRIMARY_SYMTABS (objfile
, s
)
3740 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3741 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3743 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3747 ALL_PRIMARY_SYMTABS (objfile
, s
)
3750 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3751 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3753 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3757 if (current_language
->la_macro_expansion
== macro_expansion_c
)
3759 struct macro_scope
*scope
;
3761 /* Add any macros visible in the default scope. Note that this
3762 may yield the occasional wrong result, because an expression
3763 might be evaluated in a scope other than the default. For
3764 example, if the user types "break file:line if <TAB>", the
3765 resulting expression will be evaluated at "file:line" -- but
3766 at there does not seem to be a way to detect this at
3768 scope
= default_macro_scope ();
3771 macro_for_each_in_scope (scope
->file
, scope
->line
,
3772 add_macro_name
, &datum
);
3776 /* User-defined macros are always visible. */
3777 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
3780 return (return_val
);
3784 default_make_symbol_completion_list (char *text
, char *word
)
3786 return default_make_symbol_completion_list_break_on (text
, word
, "");
3789 /* Return a NULL terminated array of all symbols (regardless of class)
3790 which begin by matching TEXT. If the answer is no symbols, then
3791 the return value is an array which contains only a NULL pointer. */
3794 make_symbol_completion_list (char *text
, char *word
)
3796 return current_language
->la_make_symbol_completion_list (text
, word
);
3799 /* Like make_symbol_completion_list, but suitable for use as a
3800 completion function. */
3803 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
3804 char *text
, char *word
)
3806 return make_symbol_completion_list (text
, word
);
3809 /* Like make_symbol_completion_list, but returns a list of symbols
3810 defined in a source file FILE. */
3813 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3818 struct dict_iterator iter
;
3819 /* The symbol we are completing on. Points in same buffer as text. */
3821 /* Length of sym_text. */
3824 /* Now look for the symbol we are supposed to complete on.
3825 FIXME: This should be language-specific. */
3829 char *quote_pos
= NULL
;
3831 /* First see if this is a quoted string. */
3833 for (p
= text
; *p
!= '\0'; ++p
)
3835 if (quote_found
!= '\0')
3837 if (*p
== quote_found
)
3838 /* Found close quote. */
3840 else if (*p
== '\\' && p
[1] == quote_found
)
3841 /* A backslash followed by the quote character
3842 doesn't end the string. */
3845 else if (*p
== '\'' || *p
== '"')
3851 if (quote_found
== '\'')
3852 /* A string within single quotes can be a symbol, so complete on it. */
3853 sym_text
= quote_pos
+ 1;
3854 else if (quote_found
== '"')
3855 /* A double-quoted string is never a symbol, nor does it make sense
3856 to complete it any other way. */
3858 return_val
= (char **) xmalloc (sizeof (char *));
3859 return_val
[0] = NULL
;
3864 /* Not a quoted string. */
3865 sym_text
= language_search_unquoted_string (text
, p
);
3869 sym_text_len
= strlen (sym_text
);
3871 return_val_size
= 10;
3872 return_val_index
= 0;
3873 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3874 return_val
[0] = NULL
;
3876 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3878 s
= lookup_symtab (srcfile
);
3881 /* Maybe they typed the file with leading directories, while the
3882 symbol tables record only its basename. */
3883 const char *tail
= lbasename (srcfile
);
3886 s
= lookup_symtab (tail
);
3889 /* If we have no symtab for that file, return an empty list. */
3891 return (return_val
);
3893 /* Go through this symtab and check the externs and statics for
3894 symbols which match. */
3896 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3897 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3899 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3902 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3903 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3905 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3908 return (return_val
);
3911 /* A helper function for make_source_files_completion_list. It adds
3912 another file name to a list of possible completions, growing the
3913 list as necessary. */
3916 add_filename_to_list (const char *fname
, char *text
, char *word
,
3917 char ***list
, int *list_used
, int *list_alloced
)
3920 size_t fnlen
= strlen (fname
);
3922 if (*list_used
+ 1 >= *list_alloced
)
3925 *list
= (char **) xrealloc ((char *) *list
,
3926 *list_alloced
* sizeof (char *));
3931 /* Return exactly fname. */
3932 new = xmalloc (fnlen
+ 5);
3933 strcpy (new, fname
);
3935 else if (word
> text
)
3937 /* Return some portion of fname. */
3938 new = xmalloc (fnlen
+ 5);
3939 strcpy (new, fname
+ (word
- text
));
3943 /* Return some of TEXT plus fname. */
3944 new = xmalloc (fnlen
+ (text
- word
) + 5);
3945 strncpy (new, word
, text
- word
);
3946 new[text
- word
] = '\0';
3947 strcat (new, fname
);
3949 (*list
)[*list_used
] = new;
3950 (*list
)[++*list_used
] = NULL
;
3954 not_interesting_fname (const char *fname
)
3956 static const char *illegal_aliens
[] = {
3957 "_globals_", /* inserted by coff_symtab_read */
3962 for (i
= 0; illegal_aliens
[i
]; i
++)
3964 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3970 /* An object of this type is passed as the user_data argument to
3971 map_partial_symbol_filenames. */
3972 struct add_partial_filename_data
3983 /* A callback for map_partial_symbol_filenames. */
3985 maybe_add_partial_symtab_filename (const char *fullname
, const char *filename
,
3988 struct add_partial_filename_data
*data
= user_data
;
3990 if (not_interesting_fname (filename
))
3992 if (!filename_seen (filename
, 1, data
->first
)
3993 #if HAVE_DOS_BASED_FILE_SYSTEM
3994 && strncasecmp (filename
, data
->text
, data
->text_len
) == 0
3996 && strncmp (filename
, data
->text
, data
->text_len
) == 0
4000 /* This file matches for a completion; add it to the
4001 current list of matches. */
4002 add_filename_to_list (filename
, data
->text
, data
->word
,
4003 data
->list
, data
->list_used
, data
->list_alloced
);
4007 const char *base_name
= lbasename (filename
);
4009 if (base_name
!= filename
4010 && !filename_seen (base_name
, 1, data
->first
)
4011 #if HAVE_DOS_BASED_FILE_SYSTEM
4012 && strncasecmp (base_name
, data
->text
, data
->text_len
) == 0
4014 && strncmp (base_name
, data
->text
, data
->text_len
) == 0
4017 add_filename_to_list (base_name
, data
->text
, data
->word
,
4018 data
->list
, data
->list_used
, data
->list_alloced
);
4022 /* Return a NULL terminated array of all source files whose names
4023 begin with matching TEXT. The file names are looked up in the
4024 symbol tables of this program. If the answer is no matchess, then
4025 the return value is an array which contains only a NULL pointer. */
4028 make_source_files_completion_list (char *text
, char *word
)
4031 struct objfile
*objfile
;
4033 int list_alloced
= 1;
4035 size_t text_len
= strlen (text
);
4036 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
4037 const char *base_name
;
4038 struct add_partial_filename_data datum
;
4042 if (!have_full_symbols () && !have_partial_symbols ())
4045 ALL_SYMTABS (objfile
, s
)
4047 if (not_interesting_fname (s
->filename
))
4049 if (!filename_seen (s
->filename
, 1, &first
)
4050 #if HAVE_DOS_BASED_FILE_SYSTEM
4051 && strncasecmp (s
->filename
, text
, text_len
) == 0
4053 && strncmp (s
->filename
, text
, text_len
) == 0
4057 /* This file matches for a completion; add it to the current
4059 add_filename_to_list (s
->filename
, text
, word
,
4060 &list
, &list_used
, &list_alloced
);
4064 /* NOTE: We allow the user to type a base name when the
4065 debug info records leading directories, but not the other
4066 way around. This is what subroutines of breakpoint
4067 command do when they parse file names. */
4068 base_name
= lbasename (s
->filename
);
4069 if (base_name
!= s
->filename
4070 && !filename_seen (base_name
, 1, &first
)
4071 #if HAVE_DOS_BASED_FILE_SYSTEM
4072 && strncasecmp (base_name
, text
, text_len
) == 0
4074 && strncmp (base_name
, text
, text_len
) == 0
4077 add_filename_to_list (base_name
, text
, word
,
4078 &list
, &list_used
, &list_alloced
);
4082 datum
.first
= &first
;
4085 datum
.text_len
= text_len
;
4087 datum
.list_used
= &list_used
;
4088 datum
.list_alloced
= &list_alloced
;
4089 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
);
4094 /* Determine if PC is in the prologue of a function. The prologue is the area
4095 between the first instruction of a function, and the first executable line.
4096 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4098 If non-zero, func_start is where we think the prologue starts, possibly
4099 by previous examination of symbol table information.
4103 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4105 struct symtab_and_line sal
;
4106 CORE_ADDR func_addr
, func_end
;
4108 /* We have several sources of information we can consult to figure
4110 - Compilers usually emit line number info that marks the prologue
4111 as its own "source line". So the ending address of that "line"
4112 is the end of the prologue. If available, this is the most
4114 - The minimal symbols and partial symbols, which can usually tell
4115 us the starting and ending addresses of a function.
4116 - If we know the function's start address, we can call the
4117 architecture-defined gdbarch_skip_prologue function to analyze the
4118 instruction stream and guess where the prologue ends.
4119 - Our `func_start' argument; if non-zero, this is the caller's
4120 best guess as to the function's entry point. At the time of
4121 this writing, handle_inferior_event doesn't get this right, so
4122 it should be our last resort. */
4124 /* Consult the partial symbol table, to find which function
4126 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4128 CORE_ADDR prologue_end
;
4130 /* We don't even have minsym information, so fall back to using
4131 func_start, if given. */
4133 return 1; /* We *might* be in a prologue. */
4135 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4137 return func_start
<= pc
&& pc
< prologue_end
;
4140 /* If we have line number information for the function, that's
4141 usually pretty reliable. */
4142 sal
= find_pc_line (func_addr
, 0);
4144 /* Now sal describes the source line at the function's entry point,
4145 which (by convention) is the prologue. The end of that "line",
4146 sal.end, is the end of the prologue.
4148 Note that, for functions whose source code is all on a single
4149 line, the line number information doesn't always end up this way.
4150 So we must verify that our purported end-of-prologue address is
4151 *within* the function, not at its start or end. */
4153 || sal
.end
<= func_addr
4154 || func_end
<= sal
.end
)
4156 /* We don't have any good line number info, so use the minsym
4157 information, together with the architecture-specific prologue
4159 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4161 return func_addr
<= pc
&& pc
< prologue_end
;
4164 /* We have line number info, and it looks good. */
4165 return func_addr
<= pc
&& pc
< sal
.end
;
4168 /* Given PC at the function's start address, attempt to find the
4169 prologue end using SAL information. Return zero if the skip fails.
4171 A non-optimized prologue traditionally has one SAL for the function
4172 and a second for the function body. A single line function has
4173 them both pointing at the same line.
4175 An optimized prologue is similar but the prologue may contain
4176 instructions (SALs) from the instruction body. Need to skip those
4177 while not getting into the function body.
4179 The functions end point and an increasing SAL line are used as
4180 indicators of the prologue's endpoint.
4182 This code is based on the function refine_prologue_limit (versions
4183 found in both ia64 and ppc). */
4186 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4188 struct symtab_and_line prologue_sal
;
4193 /* Get an initial range for the function. */
4194 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4195 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4197 prologue_sal
= find_pc_line (start_pc
, 0);
4198 if (prologue_sal
.line
!= 0)
4200 /* For langauges other than assembly, treat two consecutive line
4201 entries at the same address as a zero-instruction prologue.
4202 The GNU assembler emits separate line notes for each instruction
4203 in a multi-instruction macro, but compilers generally will not
4205 if (prologue_sal
.symtab
->language
!= language_asm
)
4207 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4210 /* Skip any earlier lines, and any end-of-sequence marker
4211 from a previous function. */
4212 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4213 || linetable
->item
[idx
].line
== 0)
4216 if (idx
+1 < linetable
->nitems
4217 && linetable
->item
[idx
+1].line
!= 0
4218 && linetable
->item
[idx
+1].pc
== start_pc
)
4222 /* If there is only one sal that covers the entire function,
4223 then it is probably a single line function, like
4225 if (prologue_sal
.end
>= end_pc
)
4228 while (prologue_sal
.end
< end_pc
)
4230 struct symtab_and_line sal
;
4232 sal
= find_pc_line (prologue_sal
.end
, 0);
4235 /* Assume that a consecutive SAL for the same (or larger)
4236 line mark the prologue -> body transition. */
4237 if (sal
.line
>= prologue_sal
.line
)
4240 /* The line number is smaller. Check that it's from the
4241 same function, not something inlined. If it's inlined,
4242 then there is no point comparing the line numbers. */
4243 bl
= block_for_pc (prologue_sal
.end
);
4246 if (block_inlined_p (bl
))
4248 if (BLOCK_FUNCTION (bl
))
4253 bl
= BLOCK_SUPERBLOCK (bl
);
4258 /* The case in which compiler's optimizer/scheduler has
4259 moved instructions into the prologue. We look ahead in
4260 the function looking for address ranges whose
4261 corresponding line number is less the first one that we
4262 found for the function. This is more conservative then
4263 refine_prologue_limit which scans a large number of SALs
4264 looking for any in the prologue */
4269 if (prologue_sal
.end
< end_pc
)
4270 /* Return the end of this line, or zero if we could not find a
4272 return prologue_sal
.end
;
4274 /* Don't return END_PC, which is past the end of the function. */
4275 return prologue_sal
.pc
;
4278 struct symtabs_and_lines
4279 decode_line_spec (char *string
, int funfirstline
)
4281 struct symtabs_and_lines sals
;
4282 struct symtab_and_line cursal
;
4285 error (_("Empty line specification."));
4287 /* We use whatever is set as the current source line. We do not try
4288 and get a default or it will recursively call us! */
4289 cursal
= get_current_source_symtab_and_line ();
4291 sals
= decode_line_1 (&string
, funfirstline
,
4292 cursal
.symtab
, cursal
.line
,
4293 (char ***) NULL
, NULL
);
4296 error (_("Junk at end of line specification: %s"), string
);
4301 static char *name_of_main
;
4304 set_main_name (const char *name
)
4306 if (name_of_main
!= NULL
)
4308 xfree (name_of_main
);
4309 name_of_main
= NULL
;
4313 name_of_main
= xstrdup (name
);
4317 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4321 find_main_name (void)
4323 const char *new_main_name
;
4325 /* Try to see if the main procedure is in Ada. */
4326 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4327 be to add a new method in the language vector, and call this
4328 method for each language until one of them returns a non-empty
4329 name. This would allow us to remove this hard-coded call to
4330 an Ada function. It is not clear that this is a better approach
4331 at this point, because all methods need to be written in a way
4332 such that false positives never be returned. For instance, it is
4333 important that a method does not return a wrong name for the main
4334 procedure if the main procedure is actually written in a different
4335 language. It is easy to guaranty this with Ada, since we use a
4336 special symbol generated only when the main in Ada to find the name
4337 of the main procedure. It is difficult however to see how this can
4338 be guarantied for languages such as C, for instance. This suggests
4339 that order of call for these methods becomes important, which means
4340 a more complicated approach. */
4341 new_main_name
= ada_main_name ();
4342 if (new_main_name
!= NULL
)
4344 set_main_name (new_main_name
);
4348 new_main_name
= pascal_main_name ();
4349 if (new_main_name
!= NULL
)
4351 set_main_name (new_main_name
);
4355 /* The languages above didn't identify the name of the main procedure.
4356 Fallback to "main". */
4357 set_main_name ("main");
4363 if (name_of_main
== NULL
)
4366 return name_of_main
;
4369 /* Handle ``executable_changed'' events for the symtab module. */
4372 symtab_observer_executable_changed (void)
4374 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4375 set_main_name (NULL
);
4378 /* Helper to expand_line_sal below. Appends new sal to SAL,
4379 initializing it from SYMTAB, LINENO and PC. */
4381 append_expanded_sal (struct symtabs_and_lines
*sal
,
4382 struct program_space
*pspace
,
4383 struct symtab
*symtab
,
4384 int lineno
, CORE_ADDR pc
)
4386 sal
->sals
= xrealloc (sal
->sals
,
4387 sizeof (sal
->sals
[0])
4388 * (sal
->nelts
+ 1));
4389 init_sal (sal
->sals
+ sal
->nelts
);
4390 sal
->sals
[sal
->nelts
].pspace
= pspace
;
4391 sal
->sals
[sal
->nelts
].symtab
= symtab
;
4392 sal
->sals
[sal
->nelts
].section
= NULL
;
4393 sal
->sals
[sal
->nelts
].end
= 0;
4394 sal
->sals
[sal
->nelts
].line
= lineno
;
4395 sal
->sals
[sal
->nelts
].pc
= pc
;
4399 /* Helper to expand_line_sal below. Search in the symtabs for any
4400 linetable entry that exactly matches FULLNAME and LINENO and append
4401 them to RET. If FULLNAME is NULL or if a symtab has no full name,
4402 use FILENAME and LINENO instead. If there is at least one match,
4403 return 1; otherwise, return 0, and return the best choice in BEST_ITEM
4407 append_exact_match_to_sals (char *filename
, char *fullname
, int lineno
,
4408 struct symtabs_and_lines
*ret
,
4409 struct linetable_entry
**best_item
,
4410 struct symtab
**best_symtab
)
4412 struct program_space
*pspace
;
4413 struct objfile
*objfile
;
4414 struct symtab
*symtab
;
4420 ALL_PSPACES (pspace
)
4421 ALL_PSPACE_SYMTABS (pspace
, objfile
, symtab
)
4423 if (FILENAME_CMP (filename
, symtab
->filename
) == 0)
4425 struct linetable
*l
;
4428 if (fullname
!= NULL
4429 && symtab_to_fullname (symtab
) != NULL
4430 && FILENAME_CMP (fullname
, symtab
->fullname
) != 0)
4432 l
= LINETABLE (symtab
);
4437 for (j
= 0; j
< len
; j
++)
4439 struct linetable_entry
*item
= &(l
->item
[j
]);
4441 if (item
->line
== lineno
)
4444 append_expanded_sal (ret
, objfile
->pspace
,
4445 symtab
, lineno
, item
->pc
);
4447 else if (!exact
&& item
->line
> lineno
4448 && (*best_item
== NULL
4449 || item
->line
< (*best_item
)->line
))
4452 *best_symtab
= symtab
;
4460 /* Compute a set of all sals in all program spaces that correspond to
4461 same file and line as SAL and return those. If there are several
4462 sals that belong to the same block, only one sal for the block is
4463 included in results. */
4465 struct symtabs_and_lines
4466 expand_line_sal (struct symtab_and_line sal
)
4468 struct symtabs_and_lines ret
;
4470 struct objfile
*objfile
;
4473 struct block
**blocks
= NULL
;
4475 struct cleanup
*old_chain
;
4480 /* Only expand sals that represent file.c:line. */
4481 if (sal
.symtab
== NULL
|| sal
.line
== 0 || sal
.pc
!= 0)
4483 ret
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4490 struct program_space
*pspace
;
4491 struct linetable_entry
*best_item
= 0;
4492 struct symtab
*best_symtab
= 0;
4494 char *match_filename
;
4497 match_filename
= sal
.symtab
->filename
;
4499 /* We need to find all symtabs for a file which name
4500 is described by sal. We cannot just directly
4501 iterate over symtabs, since a symtab might not be
4502 yet created. We also cannot iterate over psymtabs,
4503 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4504 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4505 corresponding to an included file. Therefore, we do
4506 first pass over psymtabs, reading in those with
4507 the right name. Then, we iterate over symtabs, knowing
4508 that all symtabs we're interested in are loaded. */
4510 old_chain
= save_current_program_space ();
4511 ALL_PSPACES (pspace
)
4513 set_current_program_space (pspace
);
4514 ALL_PSPACE_OBJFILES (pspace
, objfile
)
4517 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
4518 sal
.symtab
->filename
);
4521 do_cleanups (old_chain
);
4523 /* Now search the symtab for exact matches and append them. If
4524 none is found, append the best_item and all its exact
4526 symtab_to_fullname (sal
.symtab
);
4527 exact
= append_exact_match_to_sals (sal
.symtab
->filename
,
4528 sal
.symtab
->fullname
, lineno
,
4529 &ret
, &best_item
, &best_symtab
);
4530 if (!exact
&& best_item
)
4531 append_exact_match_to_sals (best_symtab
->filename
,
4532 best_symtab
->fullname
, best_item
->line
,
4533 &ret
, &best_item
, &best_symtab
);
4536 /* For optimized code, compiler can scatter one source line accross
4537 disjoint ranges of PC values, even when no duplicate functions
4538 or inline functions are involved. For example, 'for (;;)' inside
4539 non-template non-inline non-ctor-or-dtor function can result
4540 in two PC ranges. In this case, we don't want to set breakpoint
4541 on first PC of each range. To filter such cases, we use containing
4542 blocks -- for each PC found above we see if there are other PCs
4543 that are in the same block. If yes, the other PCs are filtered out. */
4545 old_chain
= save_current_program_space ();
4546 filter
= alloca (ret
.nelts
* sizeof (int));
4547 blocks
= alloca (ret
.nelts
* sizeof (struct block
*));
4548 for (i
= 0; i
< ret
.nelts
; ++i
)
4550 set_current_program_space (ret
.sals
[i
].pspace
);
4553 blocks
[i
] = block_for_pc_sect (ret
.sals
[i
].pc
, ret
.sals
[i
].section
);
4556 do_cleanups (old_chain
);
4558 for (i
= 0; i
< ret
.nelts
; ++i
)
4559 if (blocks
[i
] != NULL
)
4560 for (j
= i
+1; j
< ret
.nelts
; ++j
)
4561 if (blocks
[j
] == blocks
[i
])
4569 struct symtab_and_line
*final
=
4570 xmalloc (sizeof (struct symtab_and_line
) * (ret
.nelts
-deleted
));
4572 for (i
= 0, j
= 0; i
< ret
.nelts
; ++i
)
4574 final
[j
++] = ret
.sals
[i
];
4576 ret
.nelts
-= deleted
;
4584 /* Return 1 if the supplied producer string matches the ARM RealView
4585 compiler (armcc). */
4588 producer_is_realview (const char *producer
)
4590 static const char *const arm_idents
[] = {
4591 "ARM C Compiler, ADS",
4592 "Thumb C Compiler, ADS",
4593 "ARM C++ Compiler, ADS",
4594 "Thumb C++ Compiler, ADS",
4595 "ARM/Thumb C/C++ Compiler, RVCT",
4596 "ARM C/C++ Compiler, RVCT"
4600 if (producer
== NULL
)
4603 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
4604 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
4611 _initialize_symtab (void)
4613 add_info ("variables", variables_info
, _("\
4614 All global and static variable names, or those matching REGEXP."));
4616 add_com ("whereis", class_info
, variables_info
, _("\
4617 All global and static variable names, or those matching REGEXP."));
4619 add_info ("functions", functions_info
,
4620 _("All function names, or those matching REGEXP."));
4622 /* FIXME: This command has at least the following problems:
4623 1. It prints builtin types (in a very strange and confusing fashion).
4624 2. It doesn't print right, e.g. with
4625 typedef struct foo *FOO
4626 type_print prints "FOO" when we want to make it (in this situation)
4627 print "struct foo *".
4628 I also think "ptype" or "whatis" is more likely to be useful (but if
4629 there is much disagreement "info types" can be fixed). */
4630 add_info ("types", types_info
,
4631 _("All type names, or those matching REGEXP."));
4633 add_info ("sources", sources_info
,
4634 _("Source files in the program."));
4636 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4637 _("Set a breakpoint for all functions matching REGEXP."));
4641 add_com ("lf", class_info
, sources_info
,
4642 _("Source files in the program"));
4643 add_com ("lg", class_info
, variables_info
, _("\
4644 All global and static variable names, or those matching REGEXP."));
4647 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4648 multiple_symbols_modes
, &multiple_symbols_mode
,
4650 Set the debugger behavior when more than one symbol are possible matches\n\
4651 in an expression."), _("\
4652 Show how the debugger handles ambiguities in expressions."), _("\
4653 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4654 NULL
, NULL
, &setlist
, &showlist
);
4656 observer_attach_executable_changed (symtab_observer_executable_changed
);