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
.mangled_lang
.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
.mangled_lang
.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
.mangled_lang
.demangled_name
637 = (*slot
)->demangled
;
639 gsymbol
->language_specific
.mangled_lang
.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
.mangled_lang
.demangled_name
!= NULL
)
656 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
659 if (gsymbol
->language_specific
.mangled_lang
.demangled_name
!= NULL
)
660 return gsymbol
->language_specific
.mangled_lang
.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
.mangled_lang
.demangled_name
!= NULL
)
683 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
686 if (gsymbol
->language_specific
.mangled_lang
.demangled_name
!= NULL
)
687 return gsymbol
->language_specific
.mangled_lang
.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
;
1058 /* Make sure we do something sensible with is_a_field_of_this, since
1059 the callers that set this parameter to some non-null value will
1060 certainly use it later and expect it to be either 0 or 1.
1061 If we don't set it, the contents of is_a_field_of_this are
1063 if (is_a_field_of_this
!= NULL
)
1064 *is_a_field_of_this
= 0;
1066 /* Search specified block and its superiors. Don't search
1067 STATIC_BLOCK or GLOBAL_BLOCK. */
1069 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1073 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1074 check to see if NAME is a field of `this'. */
1076 langdef
= language_def (language
);
1078 if (langdef
->la_name_of_this
!= NULL
&& is_a_field_of_this
!= NULL
1081 struct symbol
*sym
= NULL
;
1082 const struct block
*function_block
= block
;
1084 /* 'this' is only defined in the function's block, so find the
1085 enclosing function block. */
1086 for (; function_block
&& !BLOCK_FUNCTION (function_block
);
1087 function_block
= BLOCK_SUPERBLOCK (function_block
));
1089 if (function_block
&& !dict_empty (BLOCK_DICT (function_block
)))
1090 sym
= lookup_block_symbol (function_block
, langdef
->la_name_of_this
,
1094 struct type
*t
= sym
->type
;
1096 /* I'm not really sure that type of this can ever
1097 be typedefed; just be safe. */
1099 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1100 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1101 t
= TYPE_TARGET_TYPE (t
);
1103 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1104 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1105 error (_("Internal error: `%s' is not an aggregate"),
1106 langdef
->la_name_of_this
);
1108 if (check_field (t
, name
))
1110 *is_a_field_of_this
= 1;
1116 /* Now do whatever is appropriate for LANGUAGE to look
1117 up static and global variables. */
1119 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1123 /* Now search all static file-level symbols. Not strictly correct,
1124 but more useful than an error. */
1126 return lookup_static_symbol_aux (name
, domain
);
1129 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1130 first, then check the psymtabs. If a psymtab indicates the existence of the
1131 desired name as a file-level static, then do psymtab-to-symtab conversion on
1132 the fly and return the found symbol. */
1135 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1137 struct objfile
*objfile
;
1140 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1144 ALL_OBJFILES (objfile
)
1146 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1154 /* Check to see if the symbol is defined in BLOCK or its superiors.
1155 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1157 static struct symbol
*
1158 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1159 const domain_enum domain
,
1160 enum language language
)
1163 const struct block
*static_block
= block_static_block (block
);
1164 const char *scope
= block_scope (block
);
1166 /* Check if either no block is specified or it's a global block. */
1168 if (static_block
== NULL
)
1171 while (block
!= static_block
)
1173 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1177 if (language
== language_cplus
|| language
== language_fortran
)
1179 sym
= cp_lookup_symbol_imports (scope
,
1189 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1191 block
= BLOCK_SUPERBLOCK (block
);
1194 /* We've reached the edge of the function without finding a result. */
1199 /* Look up OBJFILE to BLOCK. */
1202 lookup_objfile_from_block (const struct block
*block
)
1204 struct objfile
*obj
;
1210 block
= block_global_block (block
);
1211 /* Go through SYMTABS. */
1212 ALL_SYMTABS (obj
, s
)
1213 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1215 if (obj
->separate_debug_objfile_backlink
)
1216 obj
= obj
->separate_debug_objfile_backlink
;
1224 /* Look up a symbol in a block; if found, fixup the symbol, and set
1225 block_found appropriately. */
1228 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1229 const domain_enum domain
)
1233 sym
= lookup_block_symbol (block
, name
, domain
);
1236 block_found
= block
;
1237 return fixup_symbol_section (sym
, NULL
);
1243 /* Check all global symbols in OBJFILE in symtabs and
1247 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1249 const domain_enum domain
)
1251 const struct objfile
*objfile
;
1253 struct blockvector
*bv
;
1254 const struct block
*block
;
1257 for (objfile
= main_objfile
;
1259 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1261 /* Go through symtabs. */
1262 ALL_OBJFILE_SYMTABS (objfile
, s
)
1264 bv
= BLOCKVECTOR (s
);
1265 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1266 sym
= lookup_block_symbol (block
, name
, domain
);
1269 block_found
= block
;
1270 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1274 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1283 /* Check to see if the symbol is defined in one of the symtabs.
1284 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1285 depending on whether or not we want to search global symbols or
1288 static struct symbol
*
1289 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1290 const domain_enum domain
)
1293 struct objfile
*objfile
;
1294 struct blockvector
*bv
;
1295 const struct block
*block
;
1298 ALL_OBJFILES (objfile
)
1301 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1305 ALL_OBJFILE_SYMTABS (objfile
, s
)
1308 bv
= BLOCKVECTOR (s
);
1309 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1310 sym
= lookup_block_symbol (block
, name
, domain
);
1313 block_found
= block
;
1314 return fixup_symbol_section (sym
, objfile
);
1322 /* A helper function for lookup_symbol_aux that interfaces with the
1323 "quick" symbol table functions. */
1325 static struct symbol
*
1326 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1327 const char *name
, const domain_enum domain
)
1329 struct symtab
*symtab
;
1330 struct blockvector
*bv
;
1331 const struct block
*block
;
1336 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1340 bv
= BLOCKVECTOR (symtab
);
1341 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1342 sym
= lookup_block_symbol (block
, name
, domain
);
1345 /* This shouldn't be necessary, but as a last resort try
1346 looking in the statics even though the psymtab claimed
1347 the symbol was global, or vice-versa. It's possible
1348 that the psymtab gets it wrong in some cases. */
1350 /* FIXME: carlton/2002-09-30: Should we really do that?
1351 If that happens, isn't it likely to be a GDB error, in
1352 which case we should fix the GDB error rather than
1353 silently dealing with it here? So I'd vote for
1354 removing the check for the symbol in the other
1356 block
= BLOCKVECTOR_BLOCK (bv
,
1357 kind
== GLOBAL_BLOCK
?
1358 STATIC_BLOCK
: GLOBAL_BLOCK
);
1359 sym
= lookup_block_symbol (block
, name
, domain
);
1361 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>)."),
1362 kind
== GLOBAL_BLOCK
? "global" : "static",
1363 name
, symtab
->filename
, name
, name
);
1365 return fixup_symbol_section (sym
, objfile
);
1368 /* A default version of lookup_symbol_nonlocal for use by languages
1369 that can't think of anything better to do. This implements the C
1373 basic_lookup_symbol_nonlocal (const char *name
,
1374 const struct block
*block
,
1375 const domain_enum domain
)
1379 /* NOTE: carlton/2003-05-19: The comments below were written when
1380 this (or what turned into this) was part of lookup_symbol_aux;
1381 I'm much less worried about these questions now, since these
1382 decisions have turned out well, but I leave these comments here
1385 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1386 not it would be appropriate to search the current global block
1387 here as well. (That's what this code used to do before the
1388 is_a_field_of_this check was moved up.) On the one hand, it's
1389 redundant with the lookup_symbol_aux_symtabs search that happens
1390 next. On the other hand, if decode_line_1 is passed an argument
1391 like filename:var, then the user presumably wants 'var' to be
1392 searched for in filename. On the third hand, there shouldn't be
1393 multiple global variables all of which are named 'var', and it's
1394 not like decode_line_1 has ever restricted its search to only
1395 global variables in a single filename. All in all, only
1396 searching the static block here seems best: it's correct and it's
1399 /* NOTE: carlton/2002-12-05: There's also a possible performance
1400 issue here: if you usually search for global symbols in the
1401 current file, then it would be slightly better to search the
1402 current global block before searching all the symtabs. But there
1403 are other factors that have a much greater effect on performance
1404 than that one, so I don't think we should worry about that for
1407 sym
= lookup_symbol_static (name
, block
, domain
);
1411 return lookup_symbol_global (name
, block
, domain
);
1414 /* Lookup a symbol in the static block associated to BLOCK, if there
1415 is one; do nothing if BLOCK is NULL or a global block. */
1418 lookup_symbol_static (const char *name
,
1419 const struct block
*block
,
1420 const domain_enum domain
)
1422 const struct block
*static_block
= block_static_block (block
);
1424 if (static_block
!= NULL
)
1425 return lookup_symbol_aux_block (name
, static_block
, domain
);
1430 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1434 lookup_symbol_global (const char *name
,
1435 const struct block
*block
,
1436 const domain_enum domain
)
1438 struct symbol
*sym
= NULL
;
1439 struct objfile
*objfile
= NULL
;
1441 /* Call library-specific lookup procedure. */
1442 objfile
= lookup_objfile_from_block (block
);
1443 if (objfile
!= NULL
)
1444 sym
= solib_global_lookup (objfile
, name
, domain
);
1448 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, domain
);
1452 ALL_OBJFILES (objfile
)
1454 sym
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
, name
, domain
);
1463 symbol_matches_domain (enum language symbol_language
,
1464 domain_enum symbol_domain
,
1467 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1468 A Java class declaration also defines a typedef for the class.
1469 Similarly, any Ada type declaration implicitly defines a typedef. */
1470 if (symbol_language
== language_cplus
1471 || symbol_language
== language_d
1472 || symbol_language
== language_java
1473 || symbol_language
== language_ada
)
1475 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1476 && symbol_domain
== STRUCT_DOMAIN
)
1479 /* For all other languages, strict match is required. */
1480 return (symbol_domain
== domain
);
1483 /* Look up a type named NAME in the struct_domain. The type returned
1484 must not be opaque -- i.e., must have at least one field
1488 lookup_transparent_type (const char *name
)
1490 return current_language
->la_lookup_transparent_type (name
);
1493 /* A helper for basic_lookup_transparent_type that interfaces with the
1494 "quick" symbol table functions. */
1496 static struct type
*
1497 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1500 struct symtab
*symtab
;
1501 struct blockvector
*bv
;
1502 struct block
*block
;
1507 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1511 bv
= BLOCKVECTOR (symtab
);
1512 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1513 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1516 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1518 /* This shouldn't be necessary, but as a last resort
1519 * try looking in the 'other kind' even though the psymtab
1520 * claimed the symbol was one thing. It's possible that
1521 * the psymtab gets it wrong in some cases.
1523 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1524 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1526 /* FIXME; error is wrong in one case */
1527 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1528 %s may be an inlined function, or may be a template function\n\
1529 (if a template, try specifying an instantiation: %s<type>)."),
1530 name
, symtab
->filename
, name
, name
);
1532 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1533 return SYMBOL_TYPE (sym
);
1538 /* The standard implementation of lookup_transparent_type. This code
1539 was modeled on lookup_symbol -- the parts not relevant to looking
1540 up types were just left out. In particular it's assumed here that
1541 types are available in struct_domain and only at file-static or
1545 basic_lookup_transparent_type (const char *name
)
1548 struct symtab
*s
= NULL
;
1549 struct blockvector
*bv
;
1550 struct objfile
*objfile
;
1551 struct block
*block
;
1554 /* Now search all the global symbols. Do the symtab's first, then
1555 check the psymtab's. If a psymtab indicates the existence
1556 of the desired name as a global, then do psymtab-to-symtab
1557 conversion on the fly and return the found symbol. */
1559 ALL_OBJFILES (objfile
)
1562 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1564 name
, STRUCT_DOMAIN
);
1566 ALL_OBJFILE_SYMTABS (objfile
, s
)
1569 bv
= BLOCKVECTOR (s
);
1570 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1571 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1572 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1574 return SYMBOL_TYPE (sym
);
1579 ALL_OBJFILES (objfile
)
1581 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1586 /* Now search the static file-level symbols.
1587 Not strictly correct, but more useful than an error.
1588 Do the symtab's first, then
1589 check the psymtab's. If a psymtab indicates the existence
1590 of the desired name as a file-level static, then do psymtab-to-symtab
1591 conversion on the fly and return the found symbol.
1594 ALL_PRIMARY_SYMTABS (objfile
, s
)
1596 bv
= BLOCKVECTOR (s
);
1597 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1598 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1599 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1601 return SYMBOL_TYPE (sym
);
1605 ALL_OBJFILES (objfile
)
1607 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1612 return (struct type
*) 0;
1616 /* Find the name of the file containing main(). */
1617 /* FIXME: What about languages without main() or specially linked
1618 executables that have no main() ? */
1621 find_main_filename (void)
1623 struct objfile
*objfile
;
1624 char *name
= main_name ();
1626 ALL_OBJFILES (objfile
)
1632 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1639 /* Search BLOCK for symbol NAME in DOMAIN.
1641 Note that if NAME is the demangled form of a C++ symbol, we will fail
1642 to find a match during the binary search of the non-encoded names, but
1643 for now we don't worry about the slight inefficiency of looking for
1644 a match we'll never find, since it will go pretty quick. Once the
1645 binary search terminates, we drop through and do a straight linear
1646 search on the symbols. Each symbol which is marked as being a ObjC/C++
1647 symbol (language_cplus or language_objc set) has both the encoded and
1648 non-encoded names tested for a match.
1652 lookup_block_symbol (const struct block
*block
, const char *name
,
1653 const domain_enum domain
)
1655 struct dict_iterator iter
;
1658 if (!BLOCK_FUNCTION (block
))
1660 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1662 sym
= dict_iter_name_next (name
, &iter
))
1664 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1665 SYMBOL_DOMAIN (sym
), domain
))
1672 /* Note that parameter symbols do not always show up last in the
1673 list; this loop makes sure to take anything else other than
1674 parameter symbols first; it only uses parameter symbols as a
1675 last resort. Note that this only takes up extra computation
1678 struct symbol
*sym_found
= NULL
;
1680 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1682 sym
= dict_iter_name_next (name
, &iter
))
1684 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1685 SYMBOL_DOMAIN (sym
), domain
))
1688 if (!SYMBOL_IS_ARGUMENT (sym
))
1694 return (sym_found
); /* Will be NULL if not found. */
1698 /* Find the symtab associated with PC and SECTION. Look through the
1699 psymtabs and read in another symtab if necessary. */
1702 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
1705 struct blockvector
*bv
;
1706 struct symtab
*s
= NULL
;
1707 struct symtab
*best_s
= NULL
;
1708 struct objfile
*objfile
;
1709 struct program_space
*pspace
;
1710 CORE_ADDR distance
= 0;
1711 struct minimal_symbol
*msymbol
;
1713 pspace
= current_program_space
;
1715 /* If we know that this is not a text address, return failure. This is
1716 necessary because we loop based on the block's high and low code
1717 addresses, which do not include the data ranges, and because
1718 we call find_pc_sect_psymtab which has a similar restriction based
1719 on the partial_symtab's texthigh and textlow. */
1720 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1722 && (MSYMBOL_TYPE (msymbol
) == mst_data
1723 || MSYMBOL_TYPE (msymbol
) == mst_bss
1724 || MSYMBOL_TYPE (msymbol
) == mst_abs
1725 || MSYMBOL_TYPE (msymbol
) == mst_file_data
1726 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
1729 /* Search all symtabs for the one whose file contains our address, and which
1730 is the smallest of all the ones containing the address. This is designed
1731 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1732 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1733 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1735 This happens for native ecoff format, where code from included files
1736 gets its own symtab. The symtab for the included file should have
1737 been read in already via the dependency mechanism.
1738 It might be swifter to create several symtabs with the same name
1739 like xcoff does (I'm not sure).
1741 It also happens for objfiles that have their functions reordered.
1742 For these, the symtab we are looking for is not necessarily read in. */
1744 ALL_PRIMARY_SYMTABS (objfile
, s
)
1746 bv
= BLOCKVECTOR (s
);
1747 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1749 if (BLOCK_START (b
) <= pc
1750 && BLOCK_END (b
) > pc
1752 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1754 /* For an objfile that has its functions reordered,
1755 find_pc_psymtab will find the proper partial symbol table
1756 and we simply return its corresponding symtab. */
1757 /* In order to better support objfiles that contain both
1758 stabs and coff debugging info, we continue on if a psymtab
1760 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
1762 struct symtab
*result
;
1765 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1774 struct dict_iterator iter
;
1775 struct symbol
*sym
= NULL
;
1777 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1779 fixup_symbol_section (sym
, objfile
);
1780 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
1784 continue; /* no symbol in this symtab matches section */
1786 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1794 ALL_OBJFILES (objfile
)
1796 struct symtab
*result
;
1800 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1811 /* Find the symtab associated with PC. Look through the psymtabs and
1812 read in another symtab if necessary. Backward compatibility, no section */
1815 find_pc_symtab (CORE_ADDR pc
)
1817 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1821 /* Find the source file and line number for a given PC value and SECTION.
1822 Return a structure containing a symtab pointer, a line number,
1823 and a pc range for the entire source line.
1824 The value's .pc field is NOT the specified pc.
1825 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1826 use the line that ends there. Otherwise, in that case, the line
1827 that begins there is used. */
1829 /* The big complication here is that a line may start in one file, and end just
1830 before the start of another file. This usually occurs when you #include
1831 code in the middle of a subroutine. To properly find the end of a line's PC
1832 range, we must search all symtabs associated with this compilation unit, and
1833 find the one whose first PC is closer than that of the next line in this
1836 /* If it's worth the effort, we could be using a binary search. */
1838 struct symtab_and_line
1839 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
1842 struct linetable
*l
;
1845 struct linetable_entry
*item
;
1846 struct symtab_and_line val
;
1847 struct blockvector
*bv
;
1848 struct minimal_symbol
*msymbol
;
1849 struct minimal_symbol
*mfunsym
;
1851 /* Info on best line seen so far, and where it starts, and its file. */
1853 struct linetable_entry
*best
= NULL
;
1854 CORE_ADDR best_end
= 0;
1855 struct symtab
*best_symtab
= 0;
1857 /* Store here the first line number
1858 of a file which contains the line at the smallest pc after PC.
1859 If we don't find a line whose range contains PC,
1860 we will use a line one less than this,
1861 with a range from the start of that file to the first line's pc. */
1862 struct linetable_entry
*alt
= NULL
;
1863 struct symtab
*alt_symtab
= 0;
1865 /* Info on best line seen in this file. */
1867 struct linetable_entry
*prev
;
1869 /* If this pc is not from the current frame,
1870 it is the address of the end of a call instruction.
1871 Quite likely that is the start of the following statement.
1872 But what we want is the statement containing the instruction.
1873 Fudge the pc to make sure we get that. */
1875 init_sal (&val
); /* initialize to zeroes */
1877 val
.pspace
= current_program_space
;
1879 /* It's tempting to assume that, if we can't find debugging info for
1880 any function enclosing PC, that we shouldn't search for line
1881 number info, either. However, GAS can emit line number info for
1882 assembly files --- very helpful when debugging hand-written
1883 assembly code. In such a case, we'd have no debug info for the
1884 function, but we would have line info. */
1889 /* elz: added this because this function returned the wrong
1890 information if the pc belongs to a stub (import/export)
1891 to call a shlib function. This stub would be anywhere between
1892 two functions in the target, and the line info was erroneously
1893 taken to be the one of the line before the pc.
1895 /* RT: Further explanation:
1897 * We have stubs (trampolines) inserted between procedures.
1899 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1900 * exists in the main image.
1902 * In the minimal symbol table, we have a bunch of symbols
1903 * sorted by start address. The stubs are marked as "trampoline",
1904 * the others appear as text. E.g.:
1906 * Minimal symbol table for main image
1907 * main: code for main (text symbol)
1908 * shr1: stub (trampoline symbol)
1909 * foo: code for foo (text symbol)
1911 * Minimal symbol table for "shr1" image:
1913 * shr1: code for shr1 (text symbol)
1916 * So the code below is trying to detect if we are in the stub
1917 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1918 * and if found, do the symbolization from the real-code address
1919 * rather than the stub address.
1921 * Assumptions being made about the minimal symbol table:
1922 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1923 * if we're really in the trampoline. If we're beyond it (say
1924 * we're in "foo" in the above example), it'll have a closer
1925 * symbol (the "foo" text symbol for example) and will not
1926 * return the trampoline.
1927 * 2. lookup_minimal_symbol_text() will find a real text symbol
1928 * corresponding to the trampoline, and whose address will
1929 * be different than the trampoline address. I put in a sanity
1930 * check for the address being the same, to avoid an
1931 * infinite recursion.
1933 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1934 if (msymbol
!= NULL
)
1935 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1937 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
1939 if (mfunsym
== NULL
)
1940 /* I eliminated this warning since it is coming out
1941 * in the following situation:
1942 * gdb shmain // test program with shared libraries
1943 * (gdb) break shr1 // function in shared lib
1944 * Warning: In stub for ...
1945 * In the above situation, the shared lib is not loaded yet,
1946 * so of course we can't find the real func/line info,
1947 * but the "break" still works, and the warning is annoying.
1948 * So I commented out the warning. RT */
1949 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1951 else if (SYMBOL_VALUE_ADDRESS (mfunsym
) == SYMBOL_VALUE_ADDRESS (msymbol
))
1952 /* Avoid infinite recursion */
1953 /* See above comment about why warning is commented out */
1954 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1957 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
1961 s
= find_pc_sect_symtab (pc
, section
);
1964 /* if no symbol information, return previous pc */
1971 bv
= BLOCKVECTOR (s
);
1973 /* Look at all the symtabs that share this blockvector.
1974 They all have the same apriori range, that we found was right;
1975 but they have different line tables. */
1977 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1979 /* Find the best line in this symtab. */
1986 /* I think len can be zero if the symtab lacks line numbers
1987 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1988 I'm not sure which, and maybe it depends on the symbol
1994 item
= l
->item
; /* Get first line info */
1996 /* Is this file's first line closer than the first lines of other files?
1997 If so, record this file, and its first line, as best alternate. */
1998 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2004 for (i
= 0; i
< len
; i
++, item
++)
2006 /* Leave prev pointing to the linetable entry for the last line
2007 that started at or before PC. */
2014 /* At this point, prev points at the line whose start addr is <= pc, and
2015 item points at the next line. If we ran off the end of the linetable
2016 (pc >= start of the last line), then prev == item. If pc < start of
2017 the first line, prev will not be set. */
2019 /* Is this file's best line closer than the best in the other files?
2020 If so, record this file, and its best line, as best so far. Don't
2021 save prev if it represents the end of a function (i.e. line number
2022 0) instead of a real line. */
2024 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2029 /* Discard BEST_END if it's before the PC of the current BEST. */
2030 if (best_end
<= best
->pc
)
2034 /* If another line (denoted by ITEM) is in the linetable and its
2035 PC is after BEST's PC, but before the current BEST_END, then
2036 use ITEM's PC as the new best_end. */
2037 if (best
&& i
< len
&& item
->pc
> best
->pc
2038 && (best_end
== 0 || best_end
> item
->pc
))
2039 best_end
= item
->pc
;
2044 /* If we didn't find any line number info, just return zeros.
2045 We used to return alt->line - 1 here, but that could be
2046 anywhere; if we don't have line number info for this PC,
2047 don't make some up. */
2050 else if (best
->line
== 0)
2052 /* If our best fit is in a range of PC's for which no line
2053 number info is available (line number is zero) then we didn't
2054 find any valid line information. */
2059 val
.symtab
= best_symtab
;
2060 val
.line
= best
->line
;
2062 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2067 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2069 val
.section
= section
;
2073 /* Backward compatibility (no section) */
2075 struct symtab_and_line
2076 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2078 struct obj_section
*section
;
2080 section
= find_pc_overlay (pc
);
2081 if (pc_in_unmapped_range (pc
, section
))
2082 pc
= overlay_mapped_address (pc
, section
);
2083 return find_pc_sect_line (pc
, section
, notcurrent
);
2086 /* Find line number LINE in any symtab whose name is the same as
2089 If found, return the symtab that contains the linetable in which it was
2090 found, set *INDEX to the index in the linetable of the best entry
2091 found, and set *EXACT_MATCH nonzero if the value returned is an
2094 If not found, return NULL. */
2097 find_line_symtab (struct symtab
*symtab
, int line
,
2098 int *index
, int *exact_match
)
2100 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2102 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2106 struct linetable
*best_linetable
;
2107 struct symtab
*best_symtab
;
2109 /* First try looking it up in the given symtab. */
2110 best_linetable
= LINETABLE (symtab
);
2111 best_symtab
= symtab
;
2112 best_index
= find_line_common (best_linetable
, line
, &exact
);
2113 if (best_index
< 0 || !exact
)
2115 /* Didn't find an exact match. So we better keep looking for
2116 another symtab with the same name. In the case of xcoff,
2117 multiple csects for one source file (produced by IBM's FORTRAN
2118 compiler) produce multiple symtabs (this is unavoidable
2119 assuming csects can be at arbitrary places in memory and that
2120 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2122 /* BEST is the smallest linenumber > LINE so far seen,
2123 or 0 if none has been seen so far.
2124 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2127 struct objfile
*objfile
;
2130 if (best_index
>= 0)
2131 best
= best_linetable
->item
[best_index
].line
;
2135 ALL_OBJFILES (objfile
)
2138 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2142 /* Get symbol full file name if possible. */
2143 symtab_to_fullname (symtab
);
2145 ALL_SYMTABS (objfile
, s
)
2147 struct linetable
*l
;
2150 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2152 if (symtab
->fullname
!= NULL
2153 && symtab_to_fullname (s
) != NULL
2154 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2157 ind
= find_line_common (l
, line
, &exact
);
2167 if (best
== 0 || l
->item
[ind
].line
< best
)
2169 best
= l
->item
[ind
].line
;
2182 *index
= best_index
;
2184 *exact_match
= exact
;
2189 /* Set the PC value for a given source file and line number and return true.
2190 Returns zero for invalid line number (and sets the PC to 0).
2191 The source file is specified with a struct symtab. */
2194 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2196 struct linetable
*l
;
2203 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2206 l
= LINETABLE (symtab
);
2207 *pc
= l
->item
[ind
].pc
;
2214 /* Find the range of pc values in a line.
2215 Store the starting pc of the line into *STARTPTR
2216 and the ending pc (start of next line) into *ENDPTR.
2217 Returns 1 to indicate success.
2218 Returns 0 if could not find the specified line. */
2221 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2224 CORE_ADDR startaddr
;
2225 struct symtab_and_line found_sal
;
2228 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2231 /* This whole function is based on address. For example, if line 10 has
2232 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2233 "info line *0x123" should say the line goes from 0x100 to 0x200
2234 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2235 This also insures that we never give a range like "starts at 0x134
2236 and ends at 0x12c". */
2238 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2239 if (found_sal
.line
!= sal
.line
)
2241 /* The specified line (sal) has zero bytes. */
2242 *startptr
= found_sal
.pc
;
2243 *endptr
= found_sal
.pc
;
2247 *startptr
= found_sal
.pc
;
2248 *endptr
= found_sal
.end
;
2253 /* Given a line table and a line number, return the index into the line
2254 table for the pc of the nearest line whose number is >= the specified one.
2255 Return -1 if none is found. The value is >= 0 if it is an index.
2257 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2260 find_line_common (struct linetable
*l
, int lineno
,
2266 /* BEST is the smallest linenumber > LINENO so far seen,
2267 or 0 if none has been seen so far.
2268 BEST_INDEX identifies the item for it. */
2270 int best_index
= -1;
2281 for (i
= 0; i
< len
; i
++)
2283 struct linetable_entry
*item
= &(l
->item
[i
]);
2285 if (item
->line
== lineno
)
2287 /* Return the first (lowest address) entry which matches. */
2292 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2299 /* If we got here, we didn't get an exact match. */
2304 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2306 struct symtab_and_line sal
;
2308 sal
= find_pc_line (pc
, 0);
2311 return sal
.symtab
!= 0;
2314 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2315 address for that function that has an entry in SYMTAB's line info
2316 table. If such an entry cannot be found, return FUNC_ADDR
2319 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2321 CORE_ADDR func_start
, func_end
;
2322 struct linetable
*l
;
2325 /* Give up if this symbol has no lineinfo table. */
2326 l
= LINETABLE (symtab
);
2330 /* Get the range for the function's PC values, or give up if we
2331 cannot, for some reason. */
2332 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2335 /* Linetable entries are ordered by PC values, see the commentary in
2336 symtab.h where `struct linetable' is defined. Thus, the first
2337 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2338 address we are looking for. */
2339 for (i
= 0; i
< l
->nitems
; i
++)
2341 struct linetable_entry
*item
= &(l
->item
[i
]);
2343 /* Don't use line numbers of zero, they mark special entries in
2344 the table. See the commentary on symtab.h before the
2345 definition of struct linetable. */
2346 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2353 /* Given a function symbol SYM, find the symtab and line for the start
2355 If the argument FUNFIRSTLINE is nonzero, we want the first line
2356 of real code inside the function. */
2358 struct symtab_and_line
2359 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2361 struct symtab_and_line sal
;
2363 fixup_symbol_section (sym
, NULL
);
2364 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2365 SYMBOL_OBJ_SECTION (sym
), 0);
2367 /* We always should have a line for the function start address.
2368 If we don't, something is odd. Create a plain SAL refering
2369 just the PC and hope that skip_prologue_sal (if requested)
2370 can find a line number for after the prologue. */
2371 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2374 sal
.pspace
= current_program_space
;
2375 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2376 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2380 skip_prologue_sal (&sal
);
2385 /* Adjust SAL to the first instruction past the function prologue.
2386 If the PC was explicitly specified, the SAL is not changed.
2387 If the line number was explicitly specified, at most the SAL's PC
2388 is updated. If SAL is already past the prologue, then do nothing. */
2390 skip_prologue_sal (struct symtab_and_line
*sal
)
2393 struct symtab_and_line start_sal
;
2394 struct cleanup
*old_chain
;
2396 struct obj_section
*section
;
2398 struct objfile
*objfile
;
2399 struct gdbarch
*gdbarch
;
2400 struct block
*b
, *function_block
;
2402 /* Do not change the SAL is PC was specified explicitly. */
2403 if (sal
->explicit_pc
)
2406 old_chain
= save_current_space_and_thread ();
2407 switch_to_program_space_and_thread (sal
->pspace
);
2409 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2412 fixup_symbol_section (sym
, NULL
);
2414 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2415 section
= SYMBOL_OBJ_SECTION (sym
);
2416 name
= SYMBOL_LINKAGE_NAME (sym
);
2417 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2421 struct minimal_symbol
*msymbol
2422 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2424 if (msymbol
== NULL
)
2426 do_cleanups (old_chain
);
2430 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2431 section
= SYMBOL_OBJ_SECTION (msymbol
);
2432 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2433 objfile
= msymbol_objfile (msymbol
);
2436 gdbarch
= get_objfile_arch (objfile
);
2438 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2439 so that gdbarch_skip_prologue has something unique to work on. */
2440 if (section_is_overlay (section
) && !section_is_mapped (section
))
2441 pc
= overlay_unmapped_address (pc
, section
);
2443 /* Skip "first line" of function (which is actually its prologue). */
2444 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2445 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2447 /* For overlays, map pc back into its mapped VMA range. */
2448 pc
= overlay_mapped_address (pc
, section
);
2450 /* Calculate line number. */
2451 start_sal
= find_pc_sect_line (pc
, section
, 0);
2453 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2454 line is still part of the same function. */
2455 if (start_sal
.pc
!= pc
2456 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2457 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2458 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2459 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2461 /* First pc of next line */
2463 /* Recalculate the line number (might not be N+1). */
2464 start_sal
= find_pc_sect_line (pc
, section
, 0);
2467 /* On targets with executable formats that don't have a concept of
2468 constructors (ELF with .init has, PE doesn't), gcc emits a call
2469 to `__main' in `main' between the prologue and before user
2471 if (gdbarch_skip_main_prologue_p (gdbarch
)
2472 && name
&& strcmp (name
, "main") == 0)
2474 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2475 /* Recalculate the line number (might not be N+1). */
2476 start_sal
= find_pc_sect_line (pc
, section
, 0);
2479 /* If we still don't have a valid source line, try to find the first
2480 PC in the lineinfo table that belongs to the same function. This
2481 happens with COFF debug info, which does not seem to have an
2482 entry in lineinfo table for the code after the prologue which has
2483 no direct relation to source. For example, this was found to be
2484 the case with the DJGPP target using "gcc -gcoff" when the
2485 compiler inserted code after the prologue to make sure the stack
2487 if (sym
&& start_sal
.symtab
== NULL
)
2489 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2490 /* Recalculate the line number. */
2491 start_sal
= find_pc_sect_line (pc
, section
, 0);
2494 do_cleanups (old_chain
);
2496 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2497 forward SAL to the end of the prologue. */
2502 sal
->section
= section
;
2504 /* Unless the explicit_line flag was set, update the SAL line
2505 and symtab to correspond to the modified PC location. */
2506 if (sal
->explicit_line
)
2509 sal
->symtab
= start_sal
.symtab
;
2510 sal
->line
= start_sal
.line
;
2511 sal
->end
= start_sal
.end
;
2513 /* Check if we are now inside an inlined function. If we can,
2514 use the call site of the function instead. */
2515 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2516 function_block
= NULL
;
2519 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2521 else if (BLOCK_FUNCTION (b
) != NULL
)
2523 b
= BLOCK_SUPERBLOCK (b
);
2525 if (function_block
!= NULL
2526 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2528 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2529 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2533 /* If P is of the form "operator[ \t]+..." where `...' is
2534 some legitimate operator text, return a pointer to the
2535 beginning of the substring of the operator text.
2536 Otherwise, return "". */
2538 operator_chars (char *p
, char **end
)
2541 if (strncmp (p
, "operator", 8))
2545 /* Don't get faked out by `operator' being part of a longer
2547 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2550 /* Allow some whitespace between `operator' and the operator symbol. */
2551 while (*p
== ' ' || *p
== '\t')
2554 /* Recognize 'operator TYPENAME'. */
2556 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2560 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2569 case '\\': /* regexp quoting */
2572 if (p
[2] == '=') /* 'operator\*=' */
2574 else /* 'operator\*' */
2578 else if (p
[1] == '[')
2581 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2582 else if (p
[2] == '\\' && p
[3] == ']')
2584 *end
= p
+ 4; /* 'operator\[\]' */
2588 error (_("nothing is allowed between '[' and ']'"));
2592 /* Gratuitous qoute: skip it and move on. */
2614 if (p
[0] == '-' && p
[1] == '>')
2616 /* Struct pointer member operator 'operator->'. */
2619 *end
= p
+ 3; /* 'operator->*' */
2622 else if (p
[2] == '\\')
2624 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2629 *end
= p
+ 2; /* 'operator->' */
2633 if (p
[1] == '=' || p
[1] == p
[0])
2644 error (_("`operator ()' must be specified without whitespace in `()'"));
2649 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2654 error (_("`operator []' must be specified without whitespace in `[]'"));
2658 error (_("`operator %s' not supported"), p
);
2667 /* If FILE is not already in the table of files, return zero;
2668 otherwise return non-zero. Optionally add FILE to the table if ADD
2669 is non-zero. If *FIRST is non-zero, forget the old table
2672 filename_seen (const char *file
, int add
, int *first
)
2674 /* Table of files seen so far. */
2675 static const char **tab
= NULL
;
2676 /* Allocated size of tab in elements.
2677 Start with one 256-byte block (when using GNU malloc.c).
2678 24 is the malloc overhead when range checking is in effect. */
2679 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2680 /* Current size of tab in elements. */
2681 static int tab_cur_size
;
2687 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2691 /* Is FILE in tab? */
2692 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2693 if (strcmp (*p
, file
) == 0)
2696 /* No; maybe add it to tab. */
2699 if (tab_cur_size
== tab_alloc_size
)
2701 tab_alloc_size
*= 2;
2702 tab
= (const char **) xrealloc ((char *) tab
,
2703 tab_alloc_size
* sizeof (*tab
));
2705 tab
[tab_cur_size
++] = file
;
2711 /* Slave routine for sources_info. Force line breaks at ,'s.
2712 NAME is the name to print and *FIRST is nonzero if this is the first
2713 name printed. Set *FIRST to zero. */
2715 output_source_filename (const char *name
, int *first
)
2717 /* Since a single source file can result in several partial symbol
2718 tables, we need to avoid printing it more than once. Note: if
2719 some of the psymtabs are read in and some are not, it gets
2720 printed both under "Source files for which symbols have been
2721 read" and "Source files for which symbols will be read in on
2722 demand". I consider this a reasonable way to deal with the
2723 situation. I'm not sure whether this can also happen for
2724 symtabs; it doesn't hurt to check. */
2726 /* Was NAME already seen? */
2727 if (filename_seen (name
, 1, first
))
2729 /* Yes; don't print it again. */
2732 /* No; print it and reset *FIRST. */
2739 printf_filtered (", ");
2743 fputs_filtered (name
, gdb_stdout
);
2746 /* A callback for map_partial_symbol_filenames. */
2748 output_partial_symbol_filename (const char *fullname
, const char *filename
,
2751 output_source_filename (fullname
? fullname
: filename
, data
);
2755 sources_info (char *ignore
, int from_tty
)
2758 struct objfile
*objfile
;
2761 if (!have_full_symbols () && !have_partial_symbols ())
2763 error (_("No symbol table is loaded. Use the \"file\" command."));
2766 printf_filtered ("Source files for which symbols have been read in:\n\n");
2769 ALL_SYMTABS (objfile
, s
)
2771 const char *fullname
= symtab_to_fullname (s
);
2773 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2775 printf_filtered ("\n\n");
2777 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2780 map_partial_symbol_filenames (output_partial_symbol_filename
, &first
);
2781 printf_filtered ("\n");
2785 file_matches (const char *file
, char *files
[], int nfiles
)
2789 if (file
!= NULL
&& nfiles
!= 0)
2791 for (i
= 0; i
< nfiles
; i
++)
2793 if (strcmp (files
[i
], lbasename (file
)) == 0)
2797 else if (nfiles
== 0)
2802 /* Free any memory associated with a search. */
2804 free_search_symbols (struct symbol_search
*symbols
)
2806 struct symbol_search
*p
;
2807 struct symbol_search
*next
;
2809 for (p
= symbols
; p
!= NULL
; p
= next
)
2817 do_free_search_symbols_cleanup (void *symbols
)
2819 free_search_symbols (symbols
);
2823 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2825 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2828 /* Helper function for sort_search_symbols and qsort. Can only
2829 sort symbols, not minimal symbols. */
2831 compare_search_syms (const void *sa
, const void *sb
)
2833 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2834 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2836 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2837 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2840 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2841 prevtail where it is, but update its next pointer to point to
2842 the first of the sorted symbols. */
2843 static struct symbol_search
*
2844 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2846 struct symbol_search
**symbols
, *symp
, *old_next
;
2849 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2851 symp
= prevtail
->next
;
2852 for (i
= 0; i
< nfound
; i
++)
2857 /* Generally NULL. */
2860 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2861 compare_search_syms
);
2864 for (i
= 0; i
< nfound
; i
++)
2866 symp
->next
= symbols
[i
];
2869 symp
->next
= old_next
;
2875 /* An object of this type is passed as the user_data to the
2876 expand_symtabs_matching method. */
2877 struct search_symbols_data
2884 /* A callback for expand_symtabs_matching. */
2886 search_symbols_file_matches (const char *filename
, void *user_data
)
2888 struct search_symbols_data
*data
= user_data
;
2890 return file_matches (filename
, data
->files
, data
->nfiles
);
2893 /* A callback for expand_symtabs_matching. */
2895 search_symbols_name_matches (const char *symname
, void *user_data
)
2897 struct search_symbols_data
*data
= user_data
;
2899 return data
->regexp
== NULL
|| re_exec (symname
);
2902 /* Search the symbol table for matches to the regular expression REGEXP,
2903 returning the results in *MATCHES.
2905 Only symbols of KIND are searched:
2906 FUNCTIONS_DOMAIN - search all functions
2907 TYPES_DOMAIN - search all type names
2908 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2909 and constants (enums)
2911 free_search_symbols should be called when *MATCHES is no longer needed.
2913 The results are sorted locally; each symtab's global and static blocks are
2914 separately alphabetized.
2917 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2918 struct symbol_search
**matches
)
2921 struct blockvector
*bv
;
2924 struct dict_iterator iter
;
2926 struct objfile
*objfile
;
2927 struct minimal_symbol
*msymbol
;
2930 static enum minimal_symbol_type types
[]
2931 = {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2932 static enum minimal_symbol_type types2
[]
2933 = {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2934 static enum minimal_symbol_type types3
[]
2935 = {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2936 static enum minimal_symbol_type types4
[]
2937 = {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2938 enum minimal_symbol_type ourtype
;
2939 enum minimal_symbol_type ourtype2
;
2940 enum minimal_symbol_type ourtype3
;
2941 enum minimal_symbol_type ourtype4
;
2942 struct symbol_search
*sr
;
2943 struct symbol_search
*psr
;
2944 struct symbol_search
*tail
;
2945 struct cleanup
*old_chain
= NULL
;
2946 struct search_symbols_data datum
;
2948 if (kind
< VARIABLES_DOMAIN
)
2949 error (_("must search on specific domain"));
2951 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2952 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2953 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2954 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2956 sr
= *matches
= NULL
;
2961 /* Make sure spacing is right for C++ operators.
2962 This is just a courtesy to make the matching less sensitive
2963 to how many spaces the user leaves between 'operator'
2964 and <TYPENAME> or <OPERATOR>. */
2966 char *opname
= operator_chars (regexp
, &opend
);
2970 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2972 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2974 /* There should 1 space between 'operator' and 'TYPENAME'. */
2975 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2980 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2981 if (opname
[-1] == ' ')
2984 /* If wrong number of spaces, fix it. */
2987 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2989 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2994 if (0 != (val
= re_comp (regexp
)))
2995 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2998 /* Search through the partial symtabs *first* for all symbols
2999 matching the regexp. That way we don't have to reproduce all of
3000 the machinery below. */
3002 datum
.nfiles
= nfiles
;
3003 datum
.files
= files
;
3004 datum
.regexp
= regexp
;
3005 ALL_OBJFILES (objfile
)
3008 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3009 search_symbols_file_matches
,
3010 search_symbols_name_matches
,
3015 /* Here, we search through the minimal symbol tables for functions
3016 and variables that match, and force their symbols to be read.
3017 This is in particular necessary for demangled variable names,
3018 which are no longer put into the partial symbol tables.
3019 The symbol will then be found during the scan of symtabs below.
3021 For functions, find_pc_symtab should succeed if we have debug info
3022 for the function, for variables we have to call lookup_symbol
3023 to determine if the variable has debug info.
3024 If the lookup fails, set found_misc so that we will rescan to print
3025 any matching symbols without debug info.
3028 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3030 ALL_MSYMBOLS (objfile
, msymbol
)
3034 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3035 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3036 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3037 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3040 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3042 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3044 /* FIXME: carlton/2003-02-04: Given that the
3045 semantics of lookup_symbol keeps on changing
3046 slightly, it would be a nice idea if we had a
3047 function lookup_symbol_minsym that found the
3048 symbol associated to a given minimal symbol (if
3050 if (kind
== FUNCTIONS_DOMAIN
3051 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3052 (struct block
*) NULL
,
3062 ALL_PRIMARY_SYMTABS (objfile
, s
)
3064 bv
= BLOCKVECTOR (s
);
3065 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3067 struct symbol_search
*prevtail
= tail
;
3070 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3071 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3073 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3077 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3079 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3080 && ((kind
== VARIABLES_DOMAIN
3081 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3082 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3083 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3084 /* LOC_CONST can be used for more than just enums,
3085 e.g., c++ static const members.
3086 We only want to skip enums here. */
3087 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3088 && TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_ENUM
))
3089 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3090 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3093 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3095 psr
->symtab
= real_symtab
;
3097 psr
->msymbol
= NULL
;
3109 if (prevtail
== NULL
)
3111 struct symbol_search dummy
;
3114 tail
= sort_search_symbols (&dummy
, nfound
);
3117 old_chain
= make_cleanup_free_search_symbols (sr
);
3120 tail
= sort_search_symbols (prevtail
, nfound
);
3125 /* If there are no eyes, avoid all contact. I mean, if there are
3126 no debug symbols, then print directly from the msymbol_vector. */
3128 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3130 ALL_MSYMBOLS (objfile
, msymbol
)
3134 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3135 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3136 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3137 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3140 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3142 /* Functions: Look up by address. */
3143 if (kind
!= FUNCTIONS_DOMAIN
||
3144 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3146 /* Variables/Absolutes: Look up by name */
3147 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3148 (struct block
*) NULL
, VAR_DOMAIN
, 0)
3152 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3154 psr
->msymbol
= msymbol
;
3161 old_chain
= make_cleanup_free_search_symbols (sr
);
3175 discard_cleanups (old_chain
);
3178 /* Helper function for symtab_symbol_info, this function uses
3179 the data returned from search_symbols() to print information
3180 regarding the match to gdb_stdout.
3183 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3184 int block
, char *last
)
3186 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3188 fputs_filtered ("\nFile ", gdb_stdout
);
3189 fputs_filtered (s
->filename
, gdb_stdout
);
3190 fputs_filtered (":\n", gdb_stdout
);
3193 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3194 printf_filtered ("static ");
3196 /* Typedef that is not a C++ class */
3197 if (kind
== TYPES_DOMAIN
3198 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3199 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3200 /* variable, func, or typedef-that-is-c++-class */
3201 else if (kind
< TYPES_DOMAIN
||
3202 (kind
== TYPES_DOMAIN
&&
3203 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3205 type_print (SYMBOL_TYPE (sym
),
3206 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3207 ? "" : SYMBOL_PRINT_NAME (sym
)),
3210 printf_filtered (";\n");
3214 /* This help function for symtab_symbol_info() prints information
3215 for non-debugging symbols to gdb_stdout.
3218 print_msymbol_info (struct minimal_symbol
*msymbol
)
3220 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3223 if (gdbarch_addr_bit (gdbarch
) <= 32)
3224 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3225 & (CORE_ADDR
) 0xffffffff,
3228 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3230 printf_filtered ("%s %s\n",
3231 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3234 /* This is the guts of the commands "info functions", "info types", and
3235 "info variables". It calls search_symbols to find all matches and then
3236 print_[m]symbol_info to print out some useful information about the
3240 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3242 static char *classnames
[] = {"variable", "function", "type", "method"};
3243 struct symbol_search
*symbols
;
3244 struct symbol_search
*p
;
3245 struct cleanup
*old_chain
;
3246 char *last_filename
= NULL
;
3249 /* must make sure that if we're interrupted, symbols gets freed */
3250 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3251 old_chain
= make_cleanup_free_search_symbols (symbols
);
3253 printf_filtered (regexp
3254 ? "All %ss matching regular expression \"%s\":\n"
3255 : "All defined %ss:\n",
3256 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3258 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3262 if (p
->msymbol
!= NULL
)
3266 printf_filtered ("\nNon-debugging symbols:\n");
3269 print_msymbol_info (p
->msymbol
);
3273 print_symbol_info (kind
,
3278 last_filename
= p
->symtab
->filename
;
3282 do_cleanups (old_chain
);
3286 variables_info (char *regexp
, int from_tty
)
3288 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3292 functions_info (char *regexp
, int from_tty
)
3294 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3299 types_info (char *regexp
, int from_tty
)
3301 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3304 /* Breakpoint all functions matching regular expression. */
3307 rbreak_command_wrapper (char *regexp
, int from_tty
)
3309 rbreak_command (regexp
, from_tty
);
3312 /* A cleanup function that calls end_rbreak_breakpoints. */
3315 do_end_rbreak_breakpoints (void *ignore
)
3317 end_rbreak_breakpoints ();
3321 rbreak_command (char *regexp
, int from_tty
)
3323 struct symbol_search
*ss
;
3324 struct symbol_search
*p
;
3325 struct cleanup
*old_chain
;
3326 char *string
= NULL
;
3328 char **files
= NULL
;
3333 char *colon
= strchr (regexp
, ':');
3335 if (colon
&& *(colon
+ 1) != ':')
3340 colon_index
= colon
- regexp
;
3341 file_name
= alloca (colon_index
+ 1);
3342 memcpy (file_name
, regexp
, colon_index
);
3343 file_name
[colon_index
--] = 0;
3344 while (isspace (file_name
[colon_index
]))
3345 file_name
[colon_index
--] = 0;
3349 while (isspace (*regexp
)) regexp
++;
3353 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3354 old_chain
= make_cleanup_free_search_symbols (ss
);
3355 make_cleanup (free_current_contents
, &string
);
3357 start_rbreak_breakpoints ();
3358 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3359 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3361 if (p
->msymbol
== NULL
)
3363 int newlen
= (strlen (p
->symtab
->filename
)
3364 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3369 string
= xrealloc (string
, newlen
);
3372 strcpy (string
, p
->symtab
->filename
);
3373 strcat (string
, ":'");
3374 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3375 strcat (string
, "'");
3376 break_command (string
, from_tty
);
3377 print_symbol_info (FUNCTIONS_DOMAIN
,
3381 p
->symtab
->filename
);
3385 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3389 string
= xrealloc (string
, newlen
);
3392 strcpy (string
, "'");
3393 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3394 strcat (string
, "'");
3396 break_command (string
, from_tty
);
3397 printf_filtered ("<function, no debug info> %s;\n",
3398 SYMBOL_PRINT_NAME (p
->msymbol
));
3402 do_cleanups (old_chain
);
3406 /* Helper routine for make_symbol_completion_list. */
3408 static int return_val_size
;
3409 static int return_val_index
;
3410 static char **return_val
;
3412 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3413 completion_list_add_name \
3414 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3416 /* Test to see if the symbol specified by SYMNAME (which is already
3417 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3418 characters. If so, add it to the current completion list. */
3421 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3422 char *text
, char *word
)
3426 /* clip symbols that cannot match */
3428 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3433 /* We have a match for a completion, so add SYMNAME to the current list
3434 of matches. Note that the name is moved to freshly malloc'd space. */
3439 if (word
== sym_text
)
3441 new = xmalloc (strlen (symname
) + 5);
3442 strcpy (new, symname
);
3444 else if (word
> sym_text
)
3446 /* Return some portion of symname. */
3447 new = xmalloc (strlen (symname
) + 5);
3448 strcpy (new, symname
+ (word
- sym_text
));
3452 /* Return some of SYM_TEXT plus symname. */
3453 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3454 strncpy (new, word
, sym_text
- word
);
3455 new[sym_text
- word
] = '\0';
3456 strcat (new, symname
);
3459 if (return_val_index
+ 3 > return_val_size
)
3461 newsize
= (return_val_size
*= 2) * sizeof (char *);
3462 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3464 return_val
[return_val_index
++] = new;
3465 return_val
[return_val_index
] = NULL
;
3469 /* ObjC: In case we are completing on a selector, look as the msymbol
3470 again and feed all the selectors into the mill. */
3473 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3474 int sym_text_len
, char *text
, char *word
)
3476 static char *tmp
= NULL
;
3477 static unsigned int tmplen
= 0;
3479 char *method
, *category
, *selector
;
3482 method
= SYMBOL_NATURAL_NAME (msymbol
);
3484 /* Is it a method? */
3485 if ((method
[0] != '-') && (method
[0] != '+'))
3488 if (sym_text
[0] == '[')
3489 /* Complete on shortened method method. */
3490 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3492 while ((strlen (method
) + 1) >= tmplen
)
3498 tmp
= xrealloc (tmp
, tmplen
);
3500 selector
= strchr (method
, ' ');
3501 if (selector
!= NULL
)
3504 category
= strchr (method
, '(');
3506 if ((category
!= NULL
) && (selector
!= NULL
))
3508 memcpy (tmp
, method
, (category
- method
));
3509 tmp
[category
- method
] = ' ';
3510 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3511 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3512 if (sym_text
[0] == '[')
3513 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3516 if (selector
!= NULL
)
3518 /* Complete on selector only. */
3519 strcpy (tmp
, selector
);
3520 tmp2
= strchr (tmp
, ']');
3524 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3528 /* Break the non-quoted text based on the characters which are in
3529 symbols. FIXME: This should probably be language-specific. */
3532 language_search_unquoted_string (char *text
, char *p
)
3534 for (; p
> text
; --p
)
3536 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3540 if ((current_language
->la_language
== language_objc
))
3542 if (p
[-1] == ':') /* might be part of a method name */
3544 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3545 p
-= 2; /* beginning of a method name */
3546 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3547 { /* might be part of a method name */
3550 /* Seeing a ' ' or a '(' is not conclusive evidence
3551 that we are in the middle of a method name. However,
3552 finding "-[" or "+[" should be pretty un-ambiguous.
3553 Unfortunately we have to find it now to decide. */
3556 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3557 t
[-1] == ' ' || t
[-1] == ':' ||
3558 t
[-1] == '(' || t
[-1] == ')')
3563 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3564 p
= t
- 2; /* method name detected */
3565 /* else we leave with p unchanged */
3575 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
3576 int sym_text_len
, char *text
, char *word
)
3578 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3580 struct type
*t
= SYMBOL_TYPE (sym
);
3581 enum type_code c
= TYPE_CODE (t
);
3584 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3585 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3586 if (TYPE_FIELD_NAME (t
, j
))
3587 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3588 sym_text
, sym_text_len
, text
, word
);
3592 /* Type of the user_data argument passed to add_macro_name or
3593 add_partial_symbol_name. The contents are simply whatever is
3594 needed by completion_list_add_name. */
3595 struct add_name_data
3603 /* A callback used with macro_for_each and macro_for_each_in_scope.
3604 This adds a macro's name to the current completion list. */
3606 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
3609 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3611 completion_list_add_name ((char *) name
,
3612 datum
->sym_text
, datum
->sym_text_len
,
3613 datum
->text
, datum
->word
);
3616 /* A callback for map_partial_symbol_names. */
3618 add_partial_symbol_name (const char *name
, void *user_data
)
3620 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3622 completion_list_add_name ((char *) name
,
3623 datum
->sym_text
, datum
->sym_text_len
,
3624 datum
->text
, datum
->word
);
3628 default_make_symbol_completion_list_break_on (char *text
, char *word
,
3629 const char *break_on
)
3631 /* Problem: All of the symbols have to be copied because readline
3632 frees them. I'm not going to worry about this; hopefully there
3633 won't be that many. */
3637 struct minimal_symbol
*msymbol
;
3638 struct objfile
*objfile
;
3640 const struct block
*surrounding_static_block
, *surrounding_global_block
;
3641 struct dict_iterator iter
;
3642 /* The symbol we are completing on. Points in same buffer as text. */
3644 /* Length of sym_text. */
3646 struct add_name_data datum
;
3648 /* Now look for the symbol we are supposed to complete on. */
3652 char *quote_pos
= NULL
;
3654 /* First see if this is a quoted string. */
3656 for (p
= text
; *p
!= '\0'; ++p
)
3658 if (quote_found
!= '\0')
3660 if (*p
== quote_found
)
3661 /* Found close quote. */
3663 else if (*p
== '\\' && p
[1] == quote_found
)
3664 /* A backslash followed by the quote character
3665 doesn't end the string. */
3668 else if (*p
== '\'' || *p
== '"')
3674 if (quote_found
== '\'')
3675 /* A string within single quotes can be a symbol, so complete on it. */
3676 sym_text
= quote_pos
+ 1;
3677 else if (quote_found
== '"')
3678 /* A double-quoted string is never a symbol, nor does it make sense
3679 to complete it any other way. */
3681 return_val
= (char **) xmalloc (sizeof (char *));
3682 return_val
[0] = NULL
;
3687 /* It is not a quoted string. Break it based on the characters
3688 which are in symbols. */
3691 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
3692 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
3701 sym_text_len
= strlen (sym_text
);
3703 return_val_size
= 100;
3704 return_val_index
= 0;
3705 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3706 return_val
[0] = NULL
;
3708 datum
.sym_text
= sym_text
;
3709 datum
.sym_text_len
= sym_text_len
;
3713 /* Look through the partial symtabs for all symbols which begin
3714 by matching SYM_TEXT. Add each one that you find to the list. */
3715 map_partial_symbol_names (add_partial_symbol_name
, &datum
);
3717 /* At this point scan through the misc symbol vectors and add each
3718 symbol you find to the list. Eventually we want to ignore
3719 anything that isn't a text symbol (everything else will be
3720 handled by the psymtab code above). */
3722 ALL_MSYMBOLS (objfile
, msymbol
)
3725 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3727 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3730 /* Search upwards from currently selected frame (so that we can
3731 complete on local vars). Also catch fields of types defined in
3732 this places which match our text string. Only complete on types
3733 visible from current context. */
3735 b
= get_selected_block (0);
3736 surrounding_static_block
= block_static_block (b
);
3737 surrounding_global_block
= block_global_block (b
);
3738 if (surrounding_static_block
!= NULL
)
3739 while (b
!= surrounding_static_block
)
3743 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3745 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
3747 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
3751 /* Stop when we encounter an enclosing function. Do not stop for
3752 non-inlined functions - the locals of the enclosing function
3753 are in scope for a nested function. */
3754 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3756 b
= BLOCK_SUPERBLOCK (b
);
3759 /* Add fields from the file's types; symbols will be added below. */
3761 if (surrounding_static_block
!= NULL
)
3762 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
3763 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
3765 if (surrounding_global_block
!= NULL
)
3766 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
3767 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
3769 /* Go through the symtabs and check the externs and statics for
3770 symbols which match. */
3772 ALL_PRIMARY_SYMTABS (objfile
, s
)
3775 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3776 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3778 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3782 ALL_PRIMARY_SYMTABS (objfile
, s
)
3785 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3786 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3788 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3792 if (current_language
->la_macro_expansion
== macro_expansion_c
)
3794 struct macro_scope
*scope
;
3796 /* Add any macros visible in the default scope. Note that this
3797 may yield the occasional wrong result, because an expression
3798 might be evaluated in a scope other than the default. For
3799 example, if the user types "break file:line if <TAB>", the
3800 resulting expression will be evaluated at "file:line" -- but
3801 at there does not seem to be a way to detect this at
3803 scope
= default_macro_scope ();
3806 macro_for_each_in_scope (scope
->file
, scope
->line
,
3807 add_macro_name
, &datum
);
3811 /* User-defined macros are always visible. */
3812 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
3815 return (return_val
);
3819 default_make_symbol_completion_list (char *text
, char *word
)
3821 return default_make_symbol_completion_list_break_on (text
, word
, "");
3824 /* Return a NULL terminated array of all symbols (regardless of class)
3825 which begin by matching TEXT. If the answer is no symbols, then
3826 the return value is an array which contains only a NULL pointer. */
3829 make_symbol_completion_list (char *text
, char *word
)
3831 return current_language
->la_make_symbol_completion_list (text
, word
);
3834 /* Like make_symbol_completion_list, but suitable for use as a
3835 completion function. */
3838 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
3839 char *text
, char *word
)
3841 return make_symbol_completion_list (text
, word
);
3844 /* Like make_symbol_completion_list, but returns a list of symbols
3845 defined in a source file FILE. */
3848 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3853 struct dict_iterator iter
;
3854 /* The symbol we are completing on. Points in same buffer as text. */
3856 /* Length of sym_text. */
3859 /* Now look for the symbol we are supposed to complete on.
3860 FIXME: This should be language-specific. */
3864 char *quote_pos
= NULL
;
3866 /* First see if this is a quoted string. */
3868 for (p
= text
; *p
!= '\0'; ++p
)
3870 if (quote_found
!= '\0')
3872 if (*p
== quote_found
)
3873 /* Found close quote. */
3875 else if (*p
== '\\' && p
[1] == quote_found
)
3876 /* A backslash followed by the quote character
3877 doesn't end the string. */
3880 else if (*p
== '\'' || *p
== '"')
3886 if (quote_found
== '\'')
3887 /* A string within single quotes can be a symbol, so complete on it. */
3888 sym_text
= quote_pos
+ 1;
3889 else if (quote_found
== '"')
3890 /* A double-quoted string is never a symbol, nor does it make sense
3891 to complete it any other way. */
3893 return_val
= (char **) xmalloc (sizeof (char *));
3894 return_val
[0] = NULL
;
3899 /* Not a quoted string. */
3900 sym_text
= language_search_unquoted_string (text
, p
);
3904 sym_text_len
= strlen (sym_text
);
3906 return_val_size
= 10;
3907 return_val_index
= 0;
3908 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3909 return_val
[0] = NULL
;
3911 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3913 s
= lookup_symtab (srcfile
);
3916 /* Maybe they typed the file with leading directories, while the
3917 symbol tables record only its basename. */
3918 const char *tail
= lbasename (srcfile
);
3921 s
= lookup_symtab (tail
);
3924 /* If we have no symtab for that file, return an empty list. */
3926 return (return_val
);
3928 /* Go through this symtab and check the externs and statics for
3929 symbols which match. */
3931 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3932 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3934 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3937 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3938 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3940 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3943 return (return_val
);
3946 /* A helper function for make_source_files_completion_list. It adds
3947 another file name to a list of possible completions, growing the
3948 list as necessary. */
3951 add_filename_to_list (const char *fname
, char *text
, char *word
,
3952 char ***list
, int *list_used
, int *list_alloced
)
3955 size_t fnlen
= strlen (fname
);
3957 if (*list_used
+ 1 >= *list_alloced
)
3960 *list
= (char **) xrealloc ((char *) *list
,
3961 *list_alloced
* sizeof (char *));
3966 /* Return exactly fname. */
3967 new = xmalloc (fnlen
+ 5);
3968 strcpy (new, fname
);
3970 else if (word
> text
)
3972 /* Return some portion of fname. */
3973 new = xmalloc (fnlen
+ 5);
3974 strcpy (new, fname
+ (word
- text
));
3978 /* Return some of TEXT plus fname. */
3979 new = xmalloc (fnlen
+ (text
- word
) + 5);
3980 strncpy (new, word
, text
- word
);
3981 new[text
- word
] = '\0';
3982 strcat (new, fname
);
3984 (*list
)[*list_used
] = new;
3985 (*list
)[++*list_used
] = NULL
;
3989 not_interesting_fname (const char *fname
)
3991 static const char *illegal_aliens
[] = {
3992 "_globals_", /* inserted by coff_symtab_read */
3997 for (i
= 0; illegal_aliens
[i
]; i
++)
3999 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
4005 /* An object of this type is passed as the user_data argument to
4006 map_partial_symbol_filenames. */
4007 struct add_partial_filename_data
4018 /* A callback for map_partial_symbol_filenames. */
4020 maybe_add_partial_symtab_filename (const char *fullname
, const char *filename
,
4023 struct add_partial_filename_data
*data
= user_data
;
4025 if (not_interesting_fname (filename
))
4027 if (!filename_seen (filename
, 1, data
->first
)
4028 #if HAVE_DOS_BASED_FILE_SYSTEM
4029 && strncasecmp (filename
, data
->text
, data
->text_len
) == 0
4031 && strncmp (filename
, data
->text
, data
->text_len
) == 0
4035 /* This file matches for a completion; add it to the
4036 current list of matches. */
4037 add_filename_to_list (filename
, data
->text
, data
->word
,
4038 data
->list
, data
->list_used
, data
->list_alloced
);
4042 const char *base_name
= lbasename (filename
);
4044 if (base_name
!= filename
4045 && !filename_seen (base_name
, 1, data
->first
)
4046 #if HAVE_DOS_BASED_FILE_SYSTEM
4047 && strncasecmp (base_name
, data
->text
, data
->text_len
) == 0
4049 && strncmp (base_name
, data
->text
, data
->text_len
) == 0
4052 add_filename_to_list (base_name
, data
->text
, data
->word
,
4053 data
->list
, data
->list_used
, data
->list_alloced
);
4057 /* Return a NULL terminated array of all source files whose names
4058 begin with matching TEXT. The file names are looked up in the
4059 symbol tables of this program. If the answer is no matchess, then
4060 the return value is an array which contains only a NULL pointer. */
4063 make_source_files_completion_list (char *text
, char *word
)
4066 struct objfile
*objfile
;
4068 int list_alloced
= 1;
4070 size_t text_len
= strlen (text
);
4071 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
4072 const char *base_name
;
4073 struct add_partial_filename_data datum
;
4077 if (!have_full_symbols () && !have_partial_symbols ())
4080 ALL_SYMTABS (objfile
, s
)
4082 if (not_interesting_fname (s
->filename
))
4084 if (!filename_seen (s
->filename
, 1, &first
)
4085 #if HAVE_DOS_BASED_FILE_SYSTEM
4086 && strncasecmp (s
->filename
, text
, text_len
) == 0
4088 && strncmp (s
->filename
, text
, text_len
) == 0
4092 /* This file matches for a completion; add it to the current
4094 add_filename_to_list (s
->filename
, text
, word
,
4095 &list
, &list_used
, &list_alloced
);
4099 /* NOTE: We allow the user to type a base name when the
4100 debug info records leading directories, but not the other
4101 way around. This is what subroutines of breakpoint
4102 command do when they parse file names. */
4103 base_name
= lbasename (s
->filename
);
4104 if (base_name
!= s
->filename
4105 && !filename_seen (base_name
, 1, &first
)
4106 #if HAVE_DOS_BASED_FILE_SYSTEM
4107 && strncasecmp (base_name
, text
, text_len
) == 0
4109 && strncmp (base_name
, text
, text_len
) == 0
4112 add_filename_to_list (base_name
, text
, word
,
4113 &list
, &list_used
, &list_alloced
);
4117 datum
.first
= &first
;
4120 datum
.text_len
= text_len
;
4122 datum
.list_used
= &list_used
;
4123 datum
.list_alloced
= &list_alloced
;
4124 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
);
4129 /* Determine if PC is in the prologue of a function. The prologue is the area
4130 between the first instruction of a function, and the first executable line.
4131 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4133 If non-zero, func_start is where we think the prologue starts, possibly
4134 by previous examination of symbol table information.
4138 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4140 struct symtab_and_line sal
;
4141 CORE_ADDR func_addr
, func_end
;
4143 /* We have several sources of information we can consult to figure
4145 - Compilers usually emit line number info that marks the prologue
4146 as its own "source line". So the ending address of that "line"
4147 is the end of the prologue. If available, this is the most
4149 - The minimal symbols and partial symbols, which can usually tell
4150 us the starting and ending addresses of a function.
4151 - If we know the function's start address, we can call the
4152 architecture-defined gdbarch_skip_prologue function to analyze the
4153 instruction stream and guess where the prologue ends.
4154 - Our `func_start' argument; if non-zero, this is the caller's
4155 best guess as to the function's entry point. At the time of
4156 this writing, handle_inferior_event doesn't get this right, so
4157 it should be our last resort. */
4159 /* Consult the partial symbol table, to find which function
4161 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4163 CORE_ADDR prologue_end
;
4165 /* We don't even have minsym information, so fall back to using
4166 func_start, if given. */
4168 return 1; /* We *might* be in a prologue. */
4170 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4172 return func_start
<= pc
&& pc
< prologue_end
;
4175 /* If we have line number information for the function, that's
4176 usually pretty reliable. */
4177 sal
= find_pc_line (func_addr
, 0);
4179 /* Now sal describes the source line at the function's entry point,
4180 which (by convention) is the prologue. The end of that "line",
4181 sal.end, is the end of the prologue.
4183 Note that, for functions whose source code is all on a single
4184 line, the line number information doesn't always end up this way.
4185 So we must verify that our purported end-of-prologue address is
4186 *within* the function, not at its start or end. */
4188 || sal
.end
<= func_addr
4189 || func_end
<= sal
.end
)
4191 /* We don't have any good line number info, so use the minsym
4192 information, together with the architecture-specific prologue
4194 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4196 return func_addr
<= pc
&& pc
< prologue_end
;
4199 /* We have line number info, and it looks good. */
4200 return func_addr
<= pc
&& pc
< sal
.end
;
4203 /* Given PC at the function's start address, attempt to find the
4204 prologue end using SAL information. Return zero if the skip fails.
4206 A non-optimized prologue traditionally has one SAL for the function
4207 and a second for the function body. A single line function has
4208 them both pointing at the same line.
4210 An optimized prologue is similar but the prologue may contain
4211 instructions (SALs) from the instruction body. Need to skip those
4212 while not getting into the function body.
4214 The functions end point and an increasing SAL line are used as
4215 indicators of the prologue's endpoint.
4217 This code is based on the function refine_prologue_limit (versions
4218 found in both ia64 and ppc). */
4221 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4223 struct symtab_and_line prologue_sal
;
4228 /* Get an initial range for the function. */
4229 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4230 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4232 prologue_sal
= find_pc_line (start_pc
, 0);
4233 if (prologue_sal
.line
!= 0)
4235 /* For langauges other than assembly, treat two consecutive line
4236 entries at the same address as a zero-instruction prologue.
4237 The GNU assembler emits separate line notes for each instruction
4238 in a multi-instruction macro, but compilers generally will not
4240 if (prologue_sal
.symtab
->language
!= language_asm
)
4242 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4245 /* Skip any earlier lines, and any end-of-sequence marker
4246 from a previous function. */
4247 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4248 || linetable
->item
[idx
].line
== 0)
4251 if (idx
+1 < linetable
->nitems
4252 && linetable
->item
[idx
+1].line
!= 0
4253 && linetable
->item
[idx
+1].pc
== start_pc
)
4257 /* If there is only one sal that covers the entire function,
4258 then it is probably a single line function, like
4260 if (prologue_sal
.end
>= end_pc
)
4263 while (prologue_sal
.end
< end_pc
)
4265 struct symtab_and_line sal
;
4267 sal
= find_pc_line (prologue_sal
.end
, 0);
4270 /* Assume that a consecutive SAL for the same (or larger)
4271 line mark the prologue -> body transition. */
4272 if (sal
.line
>= prologue_sal
.line
)
4275 /* The line number is smaller. Check that it's from the
4276 same function, not something inlined. If it's inlined,
4277 then there is no point comparing the line numbers. */
4278 bl
= block_for_pc (prologue_sal
.end
);
4281 if (block_inlined_p (bl
))
4283 if (BLOCK_FUNCTION (bl
))
4288 bl
= BLOCK_SUPERBLOCK (bl
);
4293 /* The case in which compiler's optimizer/scheduler has
4294 moved instructions into the prologue. We look ahead in
4295 the function looking for address ranges whose
4296 corresponding line number is less the first one that we
4297 found for the function. This is more conservative then
4298 refine_prologue_limit which scans a large number of SALs
4299 looking for any in the prologue */
4304 if (prologue_sal
.end
< end_pc
)
4305 /* Return the end of this line, or zero if we could not find a
4307 return prologue_sal
.end
;
4309 /* Don't return END_PC, which is past the end of the function. */
4310 return prologue_sal
.pc
;
4313 struct symtabs_and_lines
4314 decode_line_spec (char *string
, int funfirstline
)
4316 struct symtabs_and_lines sals
;
4317 struct symtab_and_line cursal
;
4320 error (_("Empty line specification."));
4322 /* We use whatever is set as the current source line. We do not try
4323 and get a default or it will recursively call us! */
4324 cursal
= get_current_source_symtab_and_line ();
4326 sals
= decode_line_1 (&string
, funfirstline
,
4327 cursal
.symtab
, cursal
.line
,
4328 (char ***) NULL
, NULL
);
4331 error (_("Junk at end of line specification: %s"), string
);
4336 static char *name_of_main
;
4339 set_main_name (const char *name
)
4341 if (name_of_main
!= NULL
)
4343 xfree (name_of_main
);
4344 name_of_main
= NULL
;
4348 name_of_main
= xstrdup (name
);
4352 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4356 find_main_name (void)
4358 const char *new_main_name
;
4360 /* Try to see if the main procedure is in Ada. */
4361 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4362 be to add a new method in the language vector, and call this
4363 method for each language until one of them returns a non-empty
4364 name. This would allow us to remove this hard-coded call to
4365 an Ada function. It is not clear that this is a better approach
4366 at this point, because all methods need to be written in a way
4367 such that false positives never be returned. For instance, it is
4368 important that a method does not return a wrong name for the main
4369 procedure if the main procedure is actually written in a different
4370 language. It is easy to guaranty this with Ada, since we use a
4371 special symbol generated only when the main in Ada to find the name
4372 of the main procedure. It is difficult however to see how this can
4373 be guarantied for languages such as C, for instance. This suggests
4374 that order of call for these methods becomes important, which means
4375 a more complicated approach. */
4376 new_main_name
= ada_main_name ();
4377 if (new_main_name
!= NULL
)
4379 set_main_name (new_main_name
);
4383 new_main_name
= pascal_main_name ();
4384 if (new_main_name
!= NULL
)
4386 set_main_name (new_main_name
);
4390 /* The languages above didn't identify the name of the main procedure.
4391 Fallback to "main". */
4392 set_main_name ("main");
4398 if (name_of_main
== NULL
)
4401 return name_of_main
;
4404 /* Handle ``executable_changed'' events for the symtab module. */
4407 symtab_observer_executable_changed (void)
4409 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4410 set_main_name (NULL
);
4413 /* Helper to expand_line_sal below. Appends new sal to SAL,
4414 initializing it from SYMTAB, LINENO and PC. */
4416 append_expanded_sal (struct symtabs_and_lines
*sal
,
4417 struct program_space
*pspace
,
4418 struct symtab
*symtab
,
4419 int lineno
, CORE_ADDR pc
)
4421 sal
->sals
= xrealloc (sal
->sals
,
4422 sizeof (sal
->sals
[0])
4423 * (sal
->nelts
+ 1));
4424 init_sal (sal
->sals
+ sal
->nelts
);
4425 sal
->sals
[sal
->nelts
].pspace
= pspace
;
4426 sal
->sals
[sal
->nelts
].symtab
= symtab
;
4427 sal
->sals
[sal
->nelts
].section
= NULL
;
4428 sal
->sals
[sal
->nelts
].end
= 0;
4429 sal
->sals
[sal
->nelts
].line
= lineno
;
4430 sal
->sals
[sal
->nelts
].pc
= pc
;
4434 /* Helper to expand_line_sal below. Search in the symtabs for any
4435 linetable entry that exactly matches FULLNAME and LINENO and append
4436 them to RET. If FULLNAME is NULL or if a symtab has no full name,
4437 use FILENAME and LINENO instead. If there is at least one match,
4438 return 1; otherwise, return 0, and return the best choice in BEST_ITEM
4442 append_exact_match_to_sals (char *filename
, char *fullname
, int lineno
,
4443 struct symtabs_and_lines
*ret
,
4444 struct linetable_entry
**best_item
,
4445 struct symtab
**best_symtab
)
4447 struct program_space
*pspace
;
4448 struct objfile
*objfile
;
4449 struct symtab
*symtab
;
4455 ALL_PSPACES (pspace
)
4456 ALL_PSPACE_SYMTABS (pspace
, objfile
, symtab
)
4458 if (FILENAME_CMP (filename
, symtab
->filename
) == 0)
4460 struct linetable
*l
;
4463 if (fullname
!= NULL
4464 && symtab_to_fullname (symtab
) != NULL
4465 && FILENAME_CMP (fullname
, symtab
->fullname
) != 0)
4467 l
= LINETABLE (symtab
);
4472 for (j
= 0; j
< len
; j
++)
4474 struct linetable_entry
*item
= &(l
->item
[j
]);
4476 if (item
->line
== lineno
)
4479 append_expanded_sal (ret
, objfile
->pspace
,
4480 symtab
, lineno
, item
->pc
);
4482 else if (!exact
&& item
->line
> lineno
4483 && (*best_item
== NULL
4484 || item
->line
< (*best_item
)->line
))
4487 *best_symtab
= symtab
;
4495 /* Compute a set of all sals in all program spaces that correspond to
4496 same file and line as SAL and return those. If there are several
4497 sals that belong to the same block, only one sal for the block is
4498 included in results. */
4500 struct symtabs_and_lines
4501 expand_line_sal (struct symtab_and_line sal
)
4503 struct symtabs_and_lines ret
;
4505 struct objfile
*objfile
;
4508 struct block
**blocks
= NULL
;
4510 struct cleanup
*old_chain
;
4515 /* Only expand sals that represent file.c:line. */
4516 if (sal
.symtab
== NULL
|| sal
.line
== 0 || sal
.pc
!= 0)
4518 ret
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4525 struct program_space
*pspace
;
4526 struct linetable_entry
*best_item
= 0;
4527 struct symtab
*best_symtab
= 0;
4529 char *match_filename
;
4532 match_filename
= sal
.symtab
->filename
;
4534 /* We need to find all symtabs for a file which name
4535 is described by sal. We cannot just directly
4536 iterate over symtabs, since a symtab might not be
4537 yet created. We also cannot iterate over psymtabs,
4538 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4539 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4540 corresponding to an included file. Therefore, we do
4541 first pass over psymtabs, reading in those with
4542 the right name. Then, we iterate over symtabs, knowing
4543 that all symtabs we're interested in are loaded. */
4545 old_chain
= save_current_program_space ();
4546 ALL_PSPACES (pspace
)
4548 set_current_program_space (pspace
);
4549 ALL_PSPACE_OBJFILES (pspace
, objfile
)
4552 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
4553 sal
.symtab
->filename
);
4556 do_cleanups (old_chain
);
4558 /* Now search the symtab for exact matches and append them. If
4559 none is found, append the best_item and all its exact
4561 symtab_to_fullname (sal
.symtab
);
4562 exact
= append_exact_match_to_sals (sal
.symtab
->filename
,
4563 sal
.symtab
->fullname
, lineno
,
4564 &ret
, &best_item
, &best_symtab
);
4565 if (!exact
&& best_item
)
4566 append_exact_match_to_sals (best_symtab
->filename
,
4567 best_symtab
->fullname
, best_item
->line
,
4568 &ret
, &best_item
, &best_symtab
);
4571 /* For optimized code, compiler can scatter one source line accross
4572 disjoint ranges of PC values, even when no duplicate functions
4573 or inline functions are involved. For example, 'for (;;)' inside
4574 non-template non-inline non-ctor-or-dtor function can result
4575 in two PC ranges. In this case, we don't want to set breakpoint
4576 on first PC of each range. To filter such cases, we use containing
4577 blocks -- for each PC found above we see if there are other PCs
4578 that are in the same block. If yes, the other PCs are filtered out. */
4580 old_chain
= save_current_program_space ();
4581 filter
= alloca (ret
.nelts
* sizeof (int));
4582 blocks
= alloca (ret
.nelts
* sizeof (struct block
*));
4583 for (i
= 0; i
< ret
.nelts
; ++i
)
4585 set_current_program_space (ret
.sals
[i
].pspace
);
4588 blocks
[i
] = block_for_pc_sect (ret
.sals
[i
].pc
, ret
.sals
[i
].section
);
4591 do_cleanups (old_chain
);
4593 for (i
= 0; i
< ret
.nelts
; ++i
)
4594 if (blocks
[i
] != NULL
)
4595 for (j
= i
+1; j
< ret
.nelts
; ++j
)
4596 if (blocks
[j
] == blocks
[i
])
4604 struct symtab_and_line
*final
=
4605 xmalloc (sizeof (struct symtab_and_line
) * (ret
.nelts
-deleted
));
4607 for (i
= 0, j
= 0; i
< ret
.nelts
; ++i
)
4609 final
[j
++] = ret
.sals
[i
];
4611 ret
.nelts
-= deleted
;
4619 /* Return 1 if the supplied producer string matches the ARM RealView
4620 compiler (armcc). */
4623 producer_is_realview (const char *producer
)
4625 static const char *const arm_idents
[] = {
4626 "ARM C Compiler, ADS",
4627 "Thumb C Compiler, ADS",
4628 "ARM C++ Compiler, ADS",
4629 "Thumb C++ Compiler, ADS",
4630 "ARM/Thumb C/C++ Compiler, RVCT",
4631 "ARM C/C++ Compiler, RVCT"
4635 if (producer
== NULL
)
4638 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
4639 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
4646 _initialize_symtab (void)
4648 add_info ("variables", variables_info
, _("\
4649 All global and static variable names, or those matching REGEXP."));
4651 add_com ("whereis", class_info
, variables_info
, _("\
4652 All global and static variable names, or those matching REGEXP."));
4654 add_info ("functions", functions_info
,
4655 _("All function names, or those matching REGEXP."));
4657 /* FIXME: This command has at least the following problems:
4658 1. It prints builtin types (in a very strange and confusing fashion).
4659 2. It doesn't print right, e.g. with
4660 typedef struct foo *FOO
4661 type_print prints "FOO" when we want to make it (in this situation)
4662 print "struct foo *".
4663 I also think "ptype" or "whatis" is more likely to be useful (but if
4664 there is much disagreement "info types" can be fixed). */
4665 add_info ("types", types_info
,
4666 _("All type names, or those matching REGEXP."));
4668 add_info ("sources", sources_info
,
4669 _("Source files in the program."));
4671 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4672 _("Set a breakpoint for all functions matching REGEXP."));
4676 add_com ("lf", class_info
, sources_info
,
4677 _("Source files in the program"));
4678 add_com ("lg", class_info
, variables_info
, _("\
4679 All global and static variable names, or those matching REGEXP."));
4682 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4683 multiple_symbols_modes
, &multiple_symbols_mode
,
4685 Set the debugger behavior when more than one symbol are possible matches\n\
4686 in an expression."), _("\
4687 Show how the debugger handles ambiguities in expressions."), _("\
4688 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4689 NULL
, NULL
, &setlist
, &showlist
);
4691 observer_attach_executable_changed (symtab_observer_executable_changed
);