1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2020 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.h"
44 #include "cli/cli-style.h"
47 #include "typeprint.h"
49 #include "gdb_obstack.h"
51 #include "dictionary.h"
53 #include <sys/types.h>
58 #include "cp-support.h"
59 #include "observable.h"
62 #include "macroscope.h"
64 #include "parser-defs.h"
65 #include "completer.h"
66 #include "progspace-and-thread.h"
67 #include "gdbsupport/gdb_optional.h"
68 #include "filename-seen-cache.h"
69 #include "arch-utils.h"
71 #include "gdbsupport/gdb_string_view.h"
72 #include "gdbsupport/pathstuff.h"
73 #include "gdbsupport/common-utils.h"
75 /* Forward declarations for local functions. */
77 static void rbreak_command (const char *, int);
79 static int find_line_common (struct linetable
*, int, int *, int);
81 static struct block_symbol
82 lookup_symbol_aux (const char *name
,
83 symbol_name_match_type match_type
,
84 const struct block
*block
,
85 const domain_enum domain
,
86 enum language language
,
87 struct field_of_this_result
*);
90 struct block_symbol
lookup_local_symbol (const char *name
,
91 symbol_name_match_type match_type
,
92 const struct block
*block
,
93 const domain_enum domain
,
94 enum language language
);
96 static struct block_symbol
97 lookup_symbol_in_objfile (struct objfile
*objfile
,
98 enum block_enum block_index
,
99 const char *name
, const domain_enum domain
);
101 /* Type of the data stored on the program space. */
105 main_info () = default;
109 xfree (name_of_main
);
112 /* Name of "main". */
114 char *name_of_main
= nullptr;
116 /* Language of "main". */
118 enum language language_of_main
= language_unknown
;
121 /* Program space key for finding name and language of "main". */
123 static const program_space_key
<main_info
> main_progspace_key
;
125 /* The default symbol cache size.
126 There is no extra cpu cost for large N (except when flushing the cache,
127 which is rare). The value here is just a first attempt. A better default
128 value may be higher or lower. A prime number can make up for a bad hash
129 computation, so that's why the number is what it is. */
130 #define DEFAULT_SYMBOL_CACHE_SIZE 1021
132 /* The maximum symbol cache size.
133 There's no method to the decision of what value to use here, other than
134 there's no point in allowing a user typo to make gdb consume all memory. */
135 #define MAX_SYMBOL_CACHE_SIZE (1024*1024)
137 /* symbol_cache_lookup returns this if a previous lookup failed to find the
138 symbol in any objfile. */
139 #define SYMBOL_LOOKUP_FAILED \
140 ((struct block_symbol) {(struct symbol *) 1, NULL})
141 #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1)
143 /* Recording lookups that don't find the symbol is just as important, if not
144 more so, than recording found symbols. */
146 enum symbol_cache_slot_state
149 SYMBOL_SLOT_NOT_FOUND
,
153 struct symbol_cache_slot
155 enum symbol_cache_slot_state state
;
157 /* The objfile that was current when the symbol was looked up.
158 This is only needed for global blocks, but for simplicity's sake
159 we allocate the space for both. If data shows the extra space used
160 for static blocks is a problem, we can split things up then.
162 Global blocks need cache lookup to include the objfile context because
163 we need to account for gdbarch_iterate_over_objfiles_in_search_order
164 which can traverse objfiles in, effectively, any order, depending on
165 the current objfile, thus affecting which symbol is found. Normally,
166 only the current objfile is searched first, and then the rest are
167 searched in recorded order; but putting cache lookup inside
168 gdbarch_iterate_over_objfiles_in_search_order would be awkward.
169 Instead we just make the current objfile part of the context of
170 cache lookup. This means we can record the same symbol multiple times,
171 each with a different "current objfile" that was in effect when the
172 lookup was saved in the cache, but cache space is pretty cheap. */
173 const struct objfile
*objfile_context
;
177 struct block_symbol found
;
186 /* Clear out SLOT. */
189 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
191 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
192 xfree (slot
->value
.not_found
.name
);
193 slot
->state
= SYMBOL_SLOT_UNUSED
;
196 /* Symbols don't specify global vs static block.
197 So keep them in separate caches. */
199 struct block_symbol_cache
203 unsigned int collisions
;
205 /* SYMBOLS is a variable length array of this size.
206 One can imagine that in general one cache (global/static) should be a
207 fraction of the size of the other, but there's no data at the moment
208 on which to decide. */
211 struct symbol_cache_slot symbols
[1];
214 /* Clear all slots of BSC and free BSC. */
217 destroy_block_symbol_cache (struct block_symbol_cache
*bsc
)
221 for (unsigned int i
= 0; i
< bsc
->size
; i
++)
222 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
229 Searching for symbols in the static and global blocks over multiple objfiles
230 again and again can be slow, as can searching very big objfiles. This is a
231 simple cache to improve symbol lookup performance, which is critical to
232 overall gdb performance.
234 Symbols are hashed on the name, its domain, and block.
235 They are also hashed on their objfile for objfile-specific lookups. */
239 symbol_cache () = default;
243 destroy_block_symbol_cache (global_symbols
);
244 destroy_block_symbol_cache (static_symbols
);
247 struct block_symbol_cache
*global_symbols
= nullptr;
248 struct block_symbol_cache
*static_symbols
= nullptr;
251 /* Program space key for finding its symbol cache. */
253 static const program_space_key
<symbol_cache
> symbol_cache_key
;
255 /* When non-zero, print debugging messages related to symtab creation. */
256 unsigned int symtab_create_debug
= 0;
258 /* When non-zero, print debugging messages related to symbol lookup. */
259 unsigned int symbol_lookup_debug
= 0;
261 /* The size of the cache is staged here. */
262 static unsigned int new_symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
264 /* The current value of the symbol cache size.
265 This is saved so that if the user enters a value too big we can restore
266 the original value from here. */
267 static unsigned int symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
269 /* True if a file may be known by two different basenames.
270 This is the uncommon case, and significantly slows down gdb.
271 Default set to "off" to not slow down the common case. */
272 bool basenames_may_differ
= false;
274 /* Allow the user to configure the debugger behavior with respect
275 to multiple-choice menus when more than one symbol matches during
278 const char multiple_symbols_ask
[] = "ask";
279 const char multiple_symbols_all
[] = "all";
280 const char multiple_symbols_cancel
[] = "cancel";
281 static const char *const multiple_symbols_modes
[] =
283 multiple_symbols_ask
,
284 multiple_symbols_all
,
285 multiple_symbols_cancel
,
288 static const char *multiple_symbols_mode
= multiple_symbols_all
;
290 /* Read-only accessor to AUTO_SELECT_MODE. */
293 multiple_symbols_select_mode (void)
295 return multiple_symbols_mode
;
298 /* Return the name of a domain_enum. */
301 domain_name (domain_enum e
)
305 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
306 case VAR_DOMAIN
: return "VAR_DOMAIN";
307 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
308 case MODULE_DOMAIN
: return "MODULE_DOMAIN";
309 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
310 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
311 default: gdb_assert_not_reached ("bad domain_enum");
315 /* Return the name of a search_domain . */
318 search_domain_name (enum search_domain e
)
322 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
323 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
324 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
325 case MODULES_DOMAIN
: return "MODULES_DOMAIN";
326 case ALL_DOMAIN
: return "ALL_DOMAIN";
327 default: gdb_assert_not_reached ("bad search_domain");
334 compunit_primary_filetab (const struct compunit_symtab
*cust
)
336 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
338 /* The primary file symtab is the first one in the list. */
339 return COMPUNIT_FILETABS (cust
);
345 compunit_language (const struct compunit_symtab
*cust
)
347 struct symtab
*symtab
= compunit_primary_filetab (cust
);
349 /* The language of the compunit symtab is the language of its primary
351 return SYMTAB_LANGUAGE (symtab
);
357 minimal_symbol::data_p () const
359 return type
== mst_data
362 || type
== mst_file_data
363 || type
== mst_file_bss
;
369 minimal_symbol::text_p () const
371 return type
== mst_text
372 || type
== mst_text_gnu_ifunc
373 || type
== mst_data_gnu_ifunc
374 || type
== mst_slot_got_plt
375 || type
== mst_solib_trampoline
376 || type
== mst_file_text
;
379 /* See whether FILENAME matches SEARCH_NAME using the rule that we
380 advertise to the user. (The manual's description of linespecs
381 describes what we advertise). Returns true if they match, false
385 compare_filenames_for_search (const char *filename
, const char *search_name
)
387 int len
= strlen (filename
);
388 size_t search_len
= strlen (search_name
);
390 if (len
< search_len
)
393 /* The tail of FILENAME must match. */
394 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
397 /* Either the names must completely match, or the character
398 preceding the trailing SEARCH_NAME segment of FILENAME must be a
401 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
402 cannot match FILENAME "/path//dir/file.c" - as user has requested
403 absolute path. The sama applies for "c:\file.c" possibly
404 incorrectly hypothetically matching "d:\dir\c:\file.c".
406 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
407 compatible with SEARCH_NAME "file.c". In such case a compiler had
408 to put the "c:file.c" name into debug info. Such compatibility
409 works only on GDB built for DOS host. */
410 return (len
== search_len
411 || (!IS_ABSOLUTE_PATH (search_name
)
412 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
413 || (HAS_DRIVE_SPEC (filename
)
414 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
417 /* Same as compare_filenames_for_search, but for glob-style patterns.
418 Heads up on the order of the arguments. They match the order of
419 compare_filenames_for_search, but it's the opposite of the order of
420 arguments to gdb_filename_fnmatch. */
423 compare_glob_filenames_for_search (const char *filename
,
424 const char *search_name
)
426 /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
427 all /s have to be explicitly specified. */
428 int file_path_elements
= count_path_elements (filename
);
429 int search_path_elements
= count_path_elements (search_name
);
431 if (search_path_elements
> file_path_elements
)
434 if (IS_ABSOLUTE_PATH (search_name
))
436 return (search_path_elements
== file_path_elements
437 && gdb_filename_fnmatch (search_name
, filename
,
438 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0);
442 const char *file_to_compare
443 = strip_leading_path_elements (filename
,
444 file_path_elements
- search_path_elements
);
446 return gdb_filename_fnmatch (search_name
, file_to_compare
,
447 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0;
451 /* Check for a symtab of a specific name by searching some symtabs.
452 This is a helper function for callbacks of iterate_over_symtabs.
454 If NAME is not absolute, then REAL_PATH is NULL
455 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
457 The return value, NAME, REAL_PATH and CALLBACK are identical to the
458 `map_symtabs_matching_filename' method of quick_symbol_functions.
460 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
461 Each symtab within the specified compunit symtab is also searched.
462 AFTER_LAST is one past the last compunit symtab to search; NULL means to
463 search until the end of the list. */
466 iterate_over_some_symtabs (const char *name
,
467 const char *real_path
,
468 struct compunit_symtab
*first
,
469 struct compunit_symtab
*after_last
,
470 gdb::function_view
<bool (symtab
*)> callback
)
472 struct compunit_symtab
*cust
;
473 const char* base_name
= lbasename (name
);
475 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
477 for (symtab
*s
: compunit_filetabs (cust
))
479 if (compare_filenames_for_search (s
->filename
, name
))
486 /* Before we invoke realpath, which can get expensive when many
487 files are involved, do a quick comparison of the basenames. */
488 if (! basenames_may_differ
489 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
492 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
499 /* If the user gave us an absolute path, try to find the file in
500 this symtab and use its absolute path. */
501 if (real_path
!= NULL
)
503 const char *fullname
= symtab_to_fullname (s
);
505 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
506 gdb_assert (IS_ABSOLUTE_PATH (name
));
507 gdb::unique_xmalloc_ptr
<char> fullname_real_path
508 = gdb_realpath (fullname
);
509 fullname
= fullname_real_path
.get ();
510 if (FILENAME_CMP (real_path
, fullname
) == 0)
523 /* Check for a symtab of a specific name; first in symtabs, then in
524 psymtabs. *If* there is no '/' in the name, a match after a '/'
525 in the symtab filename will also work.
527 Calls CALLBACK with each symtab that is found. If CALLBACK returns
528 true, the search stops. */
531 iterate_over_symtabs (const char *name
,
532 gdb::function_view
<bool (symtab
*)> callback
)
534 gdb::unique_xmalloc_ptr
<char> real_path
;
536 /* Here we are interested in canonicalizing an absolute path, not
537 absolutizing a relative path. */
538 if (IS_ABSOLUTE_PATH (name
))
540 real_path
= gdb_realpath (name
);
541 gdb_assert (IS_ABSOLUTE_PATH (real_path
.get ()));
544 for (objfile
*objfile
: current_program_space
->objfiles ())
546 if (iterate_over_some_symtabs (name
, real_path
.get (),
547 objfile
->compunit_symtabs
, NULL
,
552 /* Same search rules as above apply here, but now we look thru the
555 for (objfile
*objfile
: current_program_space
->objfiles ())
558 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
566 /* A wrapper for iterate_over_symtabs that returns the first matching
570 lookup_symtab (const char *name
)
572 struct symtab
*result
= NULL
;
574 iterate_over_symtabs (name
, [&] (symtab
*symtab
)
584 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
585 full method name, which consist of the class name (from T), the unadorned
586 method name from METHOD_ID, and the signature for the specific overload,
587 specified by SIGNATURE_ID. Note that this function is g++ specific. */
590 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
592 int mangled_name_len
;
594 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
595 struct fn_field
*method
= &f
[signature_id
];
596 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
597 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
598 const char *newname
= TYPE_NAME (type
);
600 /* Does the form of physname indicate that it is the full mangled name
601 of a constructor (not just the args)? */
602 int is_full_physname_constructor
;
605 int is_destructor
= is_destructor_name (physname
);
606 /* Need a new type prefix. */
607 const char *const_prefix
= method
->is_const
? "C" : "";
608 const char *volatile_prefix
= method
->is_volatile
? "V" : "";
610 int len
= (newname
== NULL
? 0 : strlen (newname
));
612 /* Nothing to do if physname already contains a fully mangled v3 abi name
613 or an operator name. */
614 if ((physname
[0] == '_' && physname
[1] == 'Z')
615 || is_operator_name (field_name
))
616 return xstrdup (physname
);
618 is_full_physname_constructor
= is_constructor_name (physname
);
620 is_constructor
= is_full_physname_constructor
621 || (newname
&& strcmp (field_name
, newname
) == 0);
624 is_destructor
= (startswith (physname
, "__dt"));
626 if (is_destructor
|| is_full_physname_constructor
)
628 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
629 strcpy (mangled_name
, physname
);
635 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
637 else if (physname
[0] == 't' || physname
[0] == 'Q')
639 /* The physname for template and qualified methods already includes
641 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
647 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
648 volatile_prefix
, len
);
650 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
651 + strlen (buf
) + len
+ strlen (physname
) + 1);
653 mangled_name
= (char *) xmalloc (mangled_name_len
);
655 mangled_name
[0] = '\0';
657 strcpy (mangled_name
, field_name
);
659 strcat (mangled_name
, buf
);
660 /* If the class doesn't have a name, i.e. newname NULL, then we just
661 mangle it using 0 for the length of the class. Thus it gets mangled
662 as something starting with `::' rather than `classname::'. */
664 strcat (mangled_name
, newname
);
666 strcat (mangled_name
, physname
);
667 return (mangled_name
);
670 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
671 correctly allocated. */
674 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
676 struct obstack
*obstack
)
678 if (gsymbol
->language () == language_ada
)
682 gsymbol
->ada_mangled
= 0;
683 gsymbol
->language_specific
.obstack
= obstack
;
687 gsymbol
->ada_mangled
= 1;
688 gsymbol
->language_specific
.demangled_name
= name
;
692 gsymbol
->language_specific
.demangled_name
= name
;
695 /* Return the demangled name of GSYMBOL. */
698 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
700 if (gsymbol
->language () == language_ada
)
702 if (!gsymbol
->ada_mangled
)
707 return gsymbol
->language_specific
.demangled_name
;
711 /* Initialize the language dependent portion of a symbol
712 depending upon the language for the symbol. */
715 general_symbol_info::set_language (enum language language
,
716 struct obstack
*obstack
)
718 m_language
= language
;
719 if (language
== language_cplus
720 || language
== language_d
721 || language
== language_go
722 || language
== language_objc
723 || language
== language_fortran
)
725 symbol_set_demangled_name (this, NULL
, obstack
);
727 else if (language
== language_ada
)
729 gdb_assert (ada_mangled
== 0);
730 language_specific
.obstack
= obstack
;
734 memset (&language_specific
, 0, sizeof (language_specific
));
738 /* Functions to initialize a symbol's mangled name. */
740 /* Objects of this type are stored in the demangled name hash table. */
741 struct demangled_name_entry
743 demangled_name_entry (gdb::string_view mangled_name
)
744 : mangled (mangled_name
) {}
746 gdb::string_view mangled
;
747 enum language language
;
748 gdb::unique_xmalloc_ptr
<char> demangled
;
751 /* Hash function for the demangled name hash. */
754 hash_demangled_name_entry (const void *data
)
756 const struct demangled_name_entry
*e
757 = (const struct demangled_name_entry
*) data
;
759 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
762 /* Equality function for the demangled name hash. */
765 eq_demangled_name_entry (const void *a
, const void *b
)
767 const struct demangled_name_entry
*da
768 = (const struct demangled_name_entry
*) a
;
769 const struct demangled_name_entry
*db
770 = (const struct demangled_name_entry
*) b
;
772 return da
->mangled
== db
->mangled
;
776 free_demangled_name_entry (void *data
)
778 struct demangled_name_entry
*e
779 = (struct demangled_name_entry
*) data
;
781 e
->~demangled_name_entry();
784 /* Create the hash table used for demangled names. Each hash entry is
785 a pair of strings; one for the mangled name and one for the demangled
786 name. The entry is hashed via just the mangled name. */
789 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
791 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
792 The hash table code will round this up to the next prime number.
793 Choosing a much larger table size wastes memory, and saves only about
794 1% in symbol reading. However, if the minsym count is already
795 initialized (e.g. because symbol name setting was deferred to
796 a background thread) we can initialize the hashtable with a count
797 based on that, because we will almost certainly have at least that
798 many entries. If we have a nonzero number but less than 256,
799 we still stay with 256 to have some space for psymbols, etc. */
801 /* htab will expand the table when it is 3/4th full, so we account for that
802 here. +2 to round up. */
803 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
804 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
806 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
807 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
808 free_demangled_name_entry
, xcalloc
, xfree
));
814 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
817 char *demangled
= NULL
;
820 if (gsymbol
->language () == language_unknown
)
821 gsymbol
->m_language
= language_auto
;
823 if (gsymbol
->language () != language_auto
)
825 const struct language_defn
*lang
= language_def (gsymbol
->language ());
827 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
831 for (i
= language_unknown
; i
< nr_languages
; ++i
)
833 enum language l
= (enum language
) i
;
834 const struct language_defn
*lang
= language_def (l
);
836 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
838 gsymbol
->m_language
= l
;
846 /* Set both the mangled and demangled (if any) names for GSYMBOL based
847 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
848 objfile's obstack; but if COPY_NAME is 0 and if NAME is
849 NUL-terminated, then this function assumes that NAME is already
850 correctly saved (either permanently or with a lifetime tied to the
851 objfile), and it will not be copied.
853 The hash table corresponding to OBJFILE is used, and the memory
854 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
855 so the pointer can be discarded after calling this function. */
858 general_symbol_info::compute_and_set_names (gdb::string_view linkage_name
,
860 objfile_per_bfd_storage
*per_bfd
,
861 gdb::optional
<hashval_t
> hash
)
863 struct demangled_name_entry
**slot
;
865 if (language () == language_ada
)
867 /* In Ada, we do the symbol lookups using the mangled name, so
868 we can save some space by not storing the demangled name. */
870 m_name
= linkage_name
.data ();
873 char *name
= (char *) obstack_alloc (&per_bfd
->storage_obstack
,
874 linkage_name
.length () + 1);
876 memcpy (name
, linkage_name
.data (), linkage_name
.length ());
877 name
[linkage_name
.length ()] = '\0';
880 symbol_set_demangled_name (this, NULL
, &per_bfd
->storage_obstack
);
885 if (per_bfd
->demangled_names_hash
== NULL
)
886 create_demangled_names_hash (per_bfd
);
888 struct demangled_name_entry
entry (linkage_name
);
889 if (!hash
.has_value ())
890 hash
= hash_demangled_name_entry (&entry
);
891 slot
= ((struct demangled_name_entry
**)
892 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
893 &entry
, *hash
, INSERT
));
895 /* The const_cast is safe because the only reason it is already
896 initialized is if we purposefully set it from a background
897 thread to avoid doing the work here. However, it is still
898 allocated from the heap and needs to be freed by us, just
899 like if we called symbol_find_demangled_name here. If this is
900 nullptr, we call symbol_find_demangled_name below, but we put
901 this smart pointer here to be sure that we don't leak this name. */
902 gdb::unique_xmalloc_ptr
<char> demangled_name
903 (const_cast<char *> (language_specific
.demangled_name
));
905 /* If this name is not in the hash table, add it. */
907 /* A C version of the symbol may have already snuck into the table.
908 This happens to, e.g., main.init (__go_init_main). Cope. */
909 || (language () == language_go
&& (*slot
)->demangled
== nullptr))
911 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
912 to true if the string might not be nullterminated. We have to make
913 this copy because demangling needs a nullterminated string. */
914 gdb::string_view linkage_name_copy
;
917 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
918 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
919 alloc_name
[linkage_name
.length ()] = '\0';
921 linkage_name_copy
= gdb::string_view (alloc_name
,
922 linkage_name
.length ());
925 linkage_name_copy
= linkage_name
;
927 if (demangled_name
.get () == nullptr)
929 (symbol_find_demangled_name (this, linkage_name_copy
.data ()));
931 /* Suppose we have demangled_name==NULL, copy_name==0, and
932 linkage_name_copy==linkage_name. In this case, we already have the
933 mangled name saved, and we don't have a demangled name. So,
934 you might think we could save a little space by not recording
935 this in the hash table at all.
937 It turns out that it is actually important to still save such
938 an entry in the hash table, because storing this name gives
939 us better bcache hit rates for partial symbols. */
943 = ((struct demangled_name_entry
*)
944 obstack_alloc (&per_bfd
->storage_obstack
,
945 sizeof (demangled_name_entry
)));
946 new (*slot
) demangled_name_entry (linkage_name
);
950 /* If we must copy the mangled name, put it directly after
951 the struct so we can have a single allocation. */
953 = ((struct demangled_name_entry
*)
954 obstack_alloc (&per_bfd
->storage_obstack
,
955 sizeof (demangled_name_entry
)
956 + linkage_name
.length () + 1));
957 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
958 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
959 mangled_ptr
[linkage_name
.length ()] = '\0';
960 new (*slot
) demangled_name_entry
961 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
963 (*slot
)->demangled
= std::move (demangled_name
);
964 (*slot
)->language
= language ();
966 else if (language () == language_unknown
|| language () == language_auto
)
967 m_language
= (*slot
)->language
;
969 m_name
= (*slot
)->mangled
.data ();
970 if ((*slot
)->demangled
!= nullptr)
971 symbol_set_demangled_name (this, (*slot
)->demangled
.get (),
972 &per_bfd
->storage_obstack
);
974 symbol_set_demangled_name (this, NULL
, &per_bfd
->storage_obstack
);
980 general_symbol_info::natural_name () const
988 case language_fortran
:
989 if (symbol_get_demangled_name (this) != NULL
)
990 return symbol_get_demangled_name (this);
993 return ada_decode_symbol (this);
997 return linkage_name ();
1003 general_symbol_info::demangled_name () const
1005 const char *dem_name
= NULL
;
1007 switch (language ())
1009 case language_cplus
:
1013 case language_fortran
:
1014 dem_name
= symbol_get_demangled_name (this);
1017 dem_name
= ada_decode_symbol (this);
1028 general_symbol_info::search_name () const
1030 if (language () == language_ada
)
1031 return linkage_name ();
1033 return natural_name ();
1039 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1040 const lookup_name_info
&name
)
1042 symbol_name_matcher_ftype
*name_match
1043 = get_symbol_name_matcher (language_def (gsymbol
->language ()), name
);
1044 return name_match (gsymbol
->search_name (), name
, NULL
);
1049 /* Return true if the two sections are the same, or if they could
1050 plausibly be copies of each other, one in an original object
1051 file and another in a separated debug file. */
1054 matching_obj_sections (struct obj_section
*obj_first
,
1055 struct obj_section
*obj_second
)
1057 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1058 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1060 /* If they're the same section, then they match. */
1061 if (first
== second
)
1064 /* If either is NULL, give up. */
1065 if (first
== NULL
|| second
== NULL
)
1068 /* This doesn't apply to absolute symbols. */
1069 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1072 /* If they're in the same object file, they must be different sections. */
1073 if (first
->owner
== second
->owner
)
1076 /* Check whether the two sections are potentially corresponding. They must
1077 have the same size, address, and name. We can't compare section indexes,
1078 which would be more reliable, because some sections may have been
1080 if (bfd_section_size (first
) != bfd_section_size (second
))
1083 /* In-memory addresses may start at a different offset, relativize them. */
1084 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1085 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1088 if (bfd_section_name (first
) == NULL
1089 || bfd_section_name (second
) == NULL
1090 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1093 /* Otherwise check that they are in corresponding objfiles. */
1095 struct objfile
*obj
= NULL
;
1096 for (objfile
*objfile
: current_program_space
->objfiles ())
1097 if (objfile
->obfd
== first
->owner
)
1102 gdb_assert (obj
!= NULL
);
1104 if (obj
->separate_debug_objfile
!= NULL
1105 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1107 if (obj
->separate_debug_objfile_backlink
!= NULL
1108 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1117 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1119 struct bound_minimal_symbol msymbol
;
1121 /* If we know that this is not a text address, return failure. This is
1122 necessary because we loop based on texthigh and textlow, which do
1123 not include the data ranges. */
1124 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1125 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1128 for (objfile
*objfile
: current_program_space
->objfiles ())
1130 struct compunit_symtab
*cust
= NULL
;
1133 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1140 /* Hash function for the symbol cache. */
1143 hash_symbol_entry (const struct objfile
*objfile_context
,
1144 const char *name
, domain_enum domain
)
1146 unsigned int hash
= (uintptr_t) objfile_context
;
1149 hash
+= htab_hash_string (name
);
1151 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1152 to map to the same slot. */
1153 if (domain
== STRUCT_DOMAIN
)
1154 hash
+= VAR_DOMAIN
* 7;
1161 /* Equality function for the symbol cache. */
1164 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1165 const struct objfile
*objfile_context
,
1166 const char *name
, domain_enum domain
)
1168 const char *slot_name
;
1169 domain_enum slot_domain
;
1171 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1174 if (slot
->objfile_context
!= objfile_context
)
1177 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1179 slot_name
= slot
->value
.not_found
.name
;
1180 slot_domain
= slot
->value
.not_found
.domain
;
1184 slot_name
= slot
->value
.found
.symbol
->search_name ();
1185 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1188 /* NULL names match. */
1189 if (slot_name
== NULL
&& name
== NULL
)
1191 /* But there's no point in calling symbol_matches_domain in the
1192 SYMBOL_SLOT_FOUND case. */
1193 if (slot_domain
!= domain
)
1196 else if (slot_name
!= NULL
&& name
!= NULL
)
1198 /* It's important that we use the same comparison that was done
1199 the first time through. If the slot records a found symbol,
1200 then this means using the symbol name comparison function of
1201 the symbol's language with symbol->search_name (). See
1202 dictionary.c. It also means using symbol_matches_domain for
1203 found symbols. See block.c.
1205 If the slot records a not-found symbol, then require a precise match.
1206 We could still be lax with whitespace like strcmp_iw though. */
1208 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1210 if (strcmp (slot_name
, name
) != 0)
1212 if (slot_domain
!= domain
)
1217 struct symbol
*sym
= slot
->value
.found
.symbol
;
1218 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1220 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1223 if (!symbol_matches_domain (sym
->language (), slot_domain
, domain
))
1229 /* Only one name is NULL. */
1236 /* Given a cache of size SIZE, return the size of the struct (with variable
1237 length array) in bytes. */
1240 symbol_cache_byte_size (unsigned int size
)
1242 return (sizeof (struct block_symbol_cache
)
1243 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1249 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1251 /* If there's no change in size, don't do anything.
1252 All caches have the same size, so we can just compare with the size
1253 of the global symbols cache. */
1254 if ((cache
->global_symbols
!= NULL
1255 && cache
->global_symbols
->size
== new_size
)
1256 || (cache
->global_symbols
== NULL
1260 destroy_block_symbol_cache (cache
->global_symbols
);
1261 destroy_block_symbol_cache (cache
->static_symbols
);
1265 cache
->global_symbols
= NULL
;
1266 cache
->static_symbols
= NULL
;
1270 size_t total_size
= symbol_cache_byte_size (new_size
);
1272 cache
->global_symbols
1273 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1274 cache
->static_symbols
1275 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1276 cache
->global_symbols
->size
= new_size
;
1277 cache
->static_symbols
->size
= new_size
;
1281 /* Return the symbol cache of PSPACE.
1282 Create one if it doesn't exist yet. */
1284 static struct symbol_cache
*
1285 get_symbol_cache (struct program_space
*pspace
)
1287 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1291 cache
= symbol_cache_key
.emplace (pspace
);
1292 resize_symbol_cache (cache
, symbol_cache_size
);
1298 /* Set the size of the symbol cache in all program spaces. */
1301 set_symbol_cache_size (unsigned int new_size
)
1303 struct program_space
*pspace
;
1305 ALL_PSPACES (pspace
)
1307 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1309 /* The pspace could have been created but not have a cache yet. */
1311 resize_symbol_cache (cache
, new_size
);
1315 /* Called when symbol-cache-size is set. */
1318 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1319 struct cmd_list_element
*c
)
1321 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1323 /* Restore the previous value.
1324 This is the value the "show" command prints. */
1325 new_symbol_cache_size
= symbol_cache_size
;
1327 error (_("Symbol cache size is too large, max is %u."),
1328 MAX_SYMBOL_CACHE_SIZE
);
1330 symbol_cache_size
= new_symbol_cache_size
;
1332 set_symbol_cache_size (symbol_cache_size
);
1335 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1336 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1337 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1338 failed (and thus this one will too), or NULL if the symbol is not present
1340 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1341 can be used to save the result of a full lookup attempt. */
1343 static struct block_symbol
1344 symbol_cache_lookup (struct symbol_cache
*cache
,
1345 struct objfile
*objfile_context
, enum block_enum block
,
1346 const char *name
, domain_enum domain
,
1347 struct block_symbol_cache
**bsc_ptr
,
1348 struct symbol_cache_slot
**slot_ptr
)
1350 struct block_symbol_cache
*bsc
;
1352 struct symbol_cache_slot
*slot
;
1354 if (block
== GLOBAL_BLOCK
)
1355 bsc
= cache
->global_symbols
;
1357 bsc
= cache
->static_symbols
;
1365 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1366 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1371 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1373 if (symbol_lookup_debug
)
1374 fprintf_unfiltered (gdb_stdlog
,
1375 "%s block symbol cache hit%s for %s, %s\n",
1376 block
== GLOBAL_BLOCK
? "Global" : "Static",
1377 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1378 ? " (not found)" : "",
1379 name
, domain_name (domain
));
1381 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1382 return SYMBOL_LOOKUP_FAILED
;
1383 return slot
->value
.found
;
1386 /* Symbol is not present in the cache. */
1388 if (symbol_lookup_debug
)
1390 fprintf_unfiltered (gdb_stdlog
,
1391 "%s block symbol cache miss for %s, %s\n",
1392 block
== GLOBAL_BLOCK
? "Global" : "Static",
1393 name
, domain_name (domain
));
1399 /* Mark SYMBOL as found in SLOT.
1400 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1401 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1402 necessarily the objfile the symbol was found in. */
1405 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1406 struct symbol_cache_slot
*slot
,
1407 struct objfile
*objfile_context
,
1408 struct symbol
*symbol
,
1409 const struct block
*block
)
1413 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1416 symbol_cache_clear_slot (slot
);
1418 slot
->state
= SYMBOL_SLOT_FOUND
;
1419 slot
->objfile_context
= objfile_context
;
1420 slot
->value
.found
.symbol
= symbol
;
1421 slot
->value
.found
.block
= block
;
1424 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1425 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1426 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1429 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1430 struct symbol_cache_slot
*slot
,
1431 struct objfile
*objfile_context
,
1432 const char *name
, domain_enum domain
)
1436 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1439 symbol_cache_clear_slot (slot
);
1441 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1442 slot
->objfile_context
= objfile_context
;
1443 slot
->value
.not_found
.name
= xstrdup (name
);
1444 slot
->value
.not_found
.domain
= domain
;
1447 /* Flush the symbol cache of PSPACE. */
1450 symbol_cache_flush (struct program_space
*pspace
)
1452 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1457 if (cache
->global_symbols
== NULL
)
1459 gdb_assert (symbol_cache_size
== 0);
1460 gdb_assert (cache
->static_symbols
== NULL
);
1464 /* If the cache is untouched since the last flush, early exit.
1465 This is important for performance during the startup of a program linked
1466 with 100s (or 1000s) of shared libraries. */
1467 if (cache
->global_symbols
->misses
== 0
1468 && cache
->static_symbols
->misses
== 0)
1471 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1472 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1474 for (pass
= 0; pass
< 2; ++pass
)
1476 struct block_symbol_cache
*bsc
1477 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1480 for (i
= 0; i
< bsc
->size
; ++i
)
1481 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1484 cache
->global_symbols
->hits
= 0;
1485 cache
->global_symbols
->misses
= 0;
1486 cache
->global_symbols
->collisions
= 0;
1487 cache
->static_symbols
->hits
= 0;
1488 cache
->static_symbols
->misses
= 0;
1489 cache
->static_symbols
->collisions
= 0;
1495 symbol_cache_dump (const struct symbol_cache
*cache
)
1499 if (cache
->global_symbols
== NULL
)
1501 printf_filtered (" <disabled>\n");
1505 for (pass
= 0; pass
< 2; ++pass
)
1507 const struct block_symbol_cache
*bsc
1508 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1512 printf_filtered ("Global symbols:\n");
1514 printf_filtered ("Static symbols:\n");
1516 for (i
= 0; i
< bsc
->size
; ++i
)
1518 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1522 switch (slot
->state
)
1524 case SYMBOL_SLOT_UNUSED
:
1526 case SYMBOL_SLOT_NOT_FOUND
:
1527 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1528 host_address_to_string (slot
->objfile_context
),
1529 slot
->value
.not_found
.name
,
1530 domain_name (slot
->value
.not_found
.domain
));
1532 case SYMBOL_SLOT_FOUND
:
1534 struct symbol
*found
= slot
->value
.found
.symbol
;
1535 const struct objfile
*context
= slot
->objfile_context
;
1537 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1538 host_address_to_string (context
),
1539 found
->print_name (),
1540 domain_name (SYMBOL_DOMAIN (found
)));
1548 /* The "mt print symbol-cache" command. */
1551 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1553 struct program_space
*pspace
;
1555 ALL_PSPACES (pspace
)
1557 struct symbol_cache
*cache
;
1559 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1561 pspace
->symfile_object_file
!= NULL
1562 ? objfile_name (pspace
->symfile_object_file
)
1563 : "(no object file)");
1565 /* If the cache hasn't been created yet, avoid creating one. */
1566 cache
= symbol_cache_key
.get (pspace
);
1568 printf_filtered (" <empty>\n");
1570 symbol_cache_dump (cache
);
1574 /* The "mt flush-symbol-cache" command. */
1577 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1579 struct program_space
*pspace
;
1581 ALL_PSPACES (pspace
)
1583 symbol_cache_flush (pspace
);
1587 /* Print usage statistics of CACHE. */
1590 symbol_cache_stats (struct symbol_cache
*cache
)
1594 if (cache
->global_symbols
== NULL
)
1596 printf_filtered (" <disabled>\n");
1600 for (pass
= 0; pass
< 2; ++pass
)
1602 const struct block_symbol_cache
*bsc
1603 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1608 printf_filtered ("Global block cache stats:\n");
1610 printf_filtered ("Static block cache stats:\n");
1612 printf_filtered (" size: %u\n", bsc
->size
);
1613 printf_filtered (" hits: %u\n", bsc
->hits
);
1614 printf_filtered (" misses: %u\n", bsc
->misses
);
1615 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1619 /* The "mt print symbol-cache-statistics" command. */
1622 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1624 struct program_space
*pspace
;
1626 ALL_PSPACES (pspace
)
1628 struct symbol_cache
*cache
;
1630 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1632 pspace
->symfile_object_file
!= NULL
1633 ? objfile_name (pspace
->symfile_object_file
)
1634 : "(no object file)");
1636 /* If the cache hasn't been created yet, avoid creating one. */
1637 cache
= symbol_cache_key
.get (pspace
);
1639 printf_filtered (" empty, no stats available\n");
1641 symbol_cache_stats (cache
);
1645 /* This module's 'new_objfile' observer. */
1648 symtab_new_objfile_observer (struct objfile
*objfile
)
1650 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1651 symbol_cache_flush (current_program_space
);
1654 /* This module's 'free_objfile' observer. */
1657 symtab_free_objfile_observer (struct objfile
*objfile
)
1659 symbol_cache_flush (objfile
->pspace
);
1662 /* Debug symbols usually don't have section information. We need to dig that
1663 out of the minimal symbols and stash that in the debug symbol. */
1666 fixup_section (struct general_symbol_info
*ginfo
,
1667 CORE_ADDR addr
, struct objfile
*objfile
)
1669 struct minimal_symbol
*msym
;
1671 /* First, check whether a minimal symbol with the same name exists
1672 and points to the same address. The address check is required
1673 e.g. on PowerPC64, where the minimal symbol for a function will
1674 point to the function descriptor, while the debug symbol will
1675 point to the actual function code. */
1676 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->linkage_name (),
1679 ginfo
->section
= MSYMBOL_SECTION (msym
);
1682 /* Static, function-local variables do appear in the linker
1683 (minimal) symbols, but are frequently given names that won't
1684 be found via lookup_minimal_symbol(). E.g., it has been
1685 observed in frv-uclinux (ELF) executables that a static,
1686 function-local variable named "foo" might appear in the
1687 linker symbols as "foo.6" or "foo.3". Thus, there is no
1688 point in attempting to extend the lookup-by-name mechanism to
1689 handle this case due to the fact that there can be multiple
1692 So, instead, search the section table when lookup by name has
1693 failed. The ``addr'' and ``endaddr'' fields may have already
1694 been relocated. If so, the relocation offset needs to be
1695 subtracted from these values when performing the comparison.
1696 We unconditionally subtract it, because, when no relocation
1697 has been performed, the value will simply be zero.
1699 The address of the symbol whose section we're fixing up HAS
1700 NOT BEEN adjusted (relocated) yet. It can't have been since
1701 the section isn't yet known and knowing the section is
1702 necessary in order to add the correct relocation value. In
1703 other words, we wouldn't even be in this function (attempting
1704 to compute the section) if it were already known.
1706 Note that it is possible to search the minimal symbols
1707 (subtracting the relocation value if necessary) to find the
1708 matching minimal symbol, but this is overkill and much less
1709 efficient. It is not necessary to find the matching minimal
1710 symbol, only its section.
1712 Note that this technique (of doing a section table search)
1713 can fail when unrelocated section addresses overlap. For
1714 this reason, we still attempt a lookup by name prior to doing
1715 a search of the section table. */
1717 struct obj_section
*s
;
1720 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1722 int idx
= s
- objfile
->sections
;
1723 CORE_ADDR offset
= objfile
->section_offsets
[idx
];
1728 if (obj_section_addr (s
) - offset
<= addr
1729 && addr
< obj_section_endaddr (s
) - offset
)
1731 ginfo
->section
= idx
;
1736 /* If we didn't find the section, assume it is in the first
1737 section. If there is no allocated section, then it hardly
1738 matters what we pick, so just pick zero. */
1742 ginfo
->section
= fallback
;
1747 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1754 if (!SYMBOL_OBJFILE_OWNED (sym
))
1757 /* We either have an OBJFILE, or we can get at it from the sym's
1758 symtab. Anything else is a bug. */
1759 gdb_assert (objfile
|| symbol_symtab (sym
));
1761 if (objfile
== NULL
)
1762 objfile
= symbol_objfile (sym
);
1764 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1767 /* We should have an objfile by now. */
1768 gdb_assert (objfile
);
1770 switch (SYMBOL_CLASS (sym
))
1774 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1777 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1781 /* Nothing else will be listed in the minsyms -- no use looking
1786 fixup_section (sym
, addr
, objfile
);
1793 demangle_for_lookup_info::demangle_for_lookup_info
1794 (const lookup_name_info
&lookup_name
, language lang
)
1796 demangle_result_storage storage
;
1798 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1800 gdb::unique_xmalloc_ptr
<char> without_params
1801 = cp_remove_params_if_any (lookup_name
.name ().c_str (),
1802 lookup_name
.completion_mode ());
1804 if (without_params
!= NULL
)
1806 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1807 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1813 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1814 m_demangled_name
= lookup_name
.name ();
1816 m_demangled_name
= demangle_for_lookup (lookup_name
.name ().c_str (),
1822 const lookup_name_info
&
1823 lookup_name_info::match_any ()
1825 /* Lookup any symbol that "" would complete. I.e., this matches all
1827 static const lookup_name_info
lookup_name ({}, symbol_name_match_type::FULL
,
1833 /* Compute the demangled form of NAME as used by the various symbol
1834 lookup functions. The result can either be the input NAME
1835 directly, or a pointer to a buffer owned by the STORAGE object.
1837 For Ada, this function just returns NAME, unmodified.
1838 Normally, Ada symbol lookups are performed using the encoded name
1839 rather than the demangled name, and so it might seem to make sense
1840 for this function to return an encoded version of NAME.
1841 Unfortunately, we cannot do this, because this function is used in
1842 circumstances where it is not appropriate to try to encode NAME.
1843 For instance, when displaying the frame info, we demangle the name
1844 of each parameter, and then perform a symbol lookup inside our
1845 function using that demangled name. In Ada, certain functions
1846 have internally-generated parameters whose name contain uppercase
1847 characters. Encoding those name would result in those uppercase
1848 characters to become lowercase, and thus cause the symbol lookup
1852 demangle_for_lookup (const char *name
, enum language lang
,
1853 demangle_result_storage
&storage
)
1855 /* If we are using C++, D, or Go, demangle the name before doing a
1856 lookup, so we can always binary search. */
1857 if (lang
== language_cplus
)
1859 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1860 if (demangled_name
!= NULL
)
1861 return storage
.set_malloc_ptr (demangled_name
);
1863 /* If we were given a non-mangled name, canonicalize it
1864 according to the language (so far only for C++). */
1865 std::string canon
= cp_canonicalize_string (name
);
1866 if (!canon
.empty ())
1867 return storage
.swap_string (canon
);
1869 else if (lang
== language_d
)
1871 char *demangled_name
= d_demangle (name
, 0);
1872 if (demangled_name
!= NULL
)
1873 return storage
.set_malloc_ptr (demangled_name
);
1875 else if (lang
== language_go
)
1877 char *demangled_name
= go_demangle (name
, 0);
1878 if (demangled_name
!= NULL
)
1879 return storage
.set_malloc_ptr (demangled_name
);
1888 search_name_hash (enum language language
, const char *search_name
)
1890 return language_def (language
)->la_search_name_hash (search_name
);
1895 This function (or rather its subordinates) have a bunch of loops and
1896 it would seem to be attractive to put in some QUIT's (though I'm not really
1897 sure whether it can run long enough to be really important). But there
1898 are a few calls for which it would appear to be bad news to quit
1899 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1900 that there is C++ code below which can error(), but that probably
1901 doesn't affect these calls since they are looking for a known
1902 variable and thus can probably assume it will never hit the C++
1906 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1907 const domain_enum domain
, enum language lang
,
1908 struct field_of_this_result
*is_a_field_of_this
)
1910 demangle_result_storage storage
;
1911 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1913 return lookup_symbol_aux (modified_name
,
1914 symbol_name_match_type::FULL
,
1915 block
, domain
, lang
,
1916 is_a_field_of_this
);
1922 lookup_symbol (const char *name
, const struct block
*block
,
1924 struct field_of_this_result
*is_a_field_of_this
)
1926 return lookup_symbol_in_language (name
, block
, domain
,
1927 current_language
->la_language
,
1928 is_a_field_of_this
);
1934 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1937 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1938 block
, domain
, language_asm
, NULL
);
1944 lookup_language_this (const struct language_defn
*lang
,
1945 const struct block
*block
)
1947 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1950 if (symbol_lookup_debug
> 1)
1952 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1954 fprintf_unfiltered (gdb_stdlog
,
1955 "lookup_language_this (%s, %s (objfile %s))",
1956 lang
->la_name
, host_address_to_string (block
),
1957 objfile_debug_name (objfile
));
1964 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1965 symbol_name_match_type::SEARCH_NAME
,
1969 if (symbol_lookup_debug
> 1)
1971 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1973 host_address_to_string (sym
),
1974 host_address_to_string (block
));
1976 return (struct block_symbol
) {sym
, block
};
1978 if (BLOCK_FUNCTION (block
))
1980 block
= BLOCK_SUPERBLOCK (block
);
1983 if (symbol_lookup_debug
> 1)
1984 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1988 /* Given TYPE, a structure/union,
1989 return 1 if the component named NAME from the ultimate target
1990 structure/union is defined, otherwise, return 0. */
1993 check_field (struct type
*type
, const char *name
,
1994 struct field_of_this_result
*is_a_field_of_this
)
1998 /* The type may be a stub. */
1999 type
= check_typedef (type
);
2001 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
2003 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
2005 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
2007 is_a_field_of_this
->type
= type
;
2008 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
2013 /* C++: If it was not found as a data field, then try to return it
2014 as a pointer to a method. */
2016 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
2018 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2020 is_a_field_of_this
->type
= type
;
2021 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2026 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2027 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2033 /* Behave like lookup_symbol except that NAME is the natural name
2034 (e.g., demangled name) of the symbol that we're looking for. */
2036 static struct block_symbol
2037 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2038 const struct block
*block
,
2039 const domain_enum domain
, enum language language
,
2040 struct field_of_this_result
*is_a_field_of_this
)
2042 struct block_symbol result
;
2043 const struct language_defn
*langdef
;
2045 if (symbol_lookup_debug
)
2047 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2049 fprintf_unfiltered (gdb_stdlog
,
2050 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2051 name
, host_address_to_string (block
),
2053 ? objfile_debug_name (objfile
) : "NULL",
2054 domain_name (domain
), language_str (language
));
2057 /* Make sure we do something sensible with is_a_field_of_this, since
2058 the callers that set this parameter to some non-null value will
2059 certainly use it later. If we don't set it, the contents of
2060 is_a_field_of_this are undefined. */
2061 if (is_a_field_of_this
!= NULL
)
2062 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2064 /* Search specified block and its superiors. Don't search
2065 STATIC_BLOCK or GLOBAL_BLOCK. */
2067 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2068 if (result
.symbol
!= NULL
)
2070 if (symbol_lookup_debug
)
2072 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2073 host_address_to_string (result
.symbol
));
2078 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2079 check to see if NAME is a field of `this'. */
2081 langdef
= language_def (language
);
2083 /* Don't do this check if we are searching for a struct. It will
2084 not be found by check_field, but will be found by other
2086 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2088 result
= lookup_language_this (langdef
, block
);
2092 struct type
*t
= result
.symbol
->type
;
2094 /* I'm not really sure that type of this can ever
2095 be typedefed; just be safe. */
2096 t
= check_typedef (t
);
2097 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2098 t
= TYPE_TARGET_TYPE (t
);
2100 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2101 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2102 error (_("Internal error: `%s' is not an aggregate"),
2103 langdef
->la_name_of_this
);
2105 if (check_field (t
, name
, is_a_field_of_this
))
2107 if (symbol_lookup_debug
)
2109 fprintf_unfiltered (gdb_stdlog
,
2110 "lookup_symbol_aux (...) = NULL\n");
2117 /* Now do whatever is appropriate for LANGUAGE to look
2118 up static and global variables. */
2120 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2121 if (result
.symbol
!= NULL
)
2123 if (symbol_lookup_debug
)
2125 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2126 host_address_to_string (result
.symbol
));
2131 /* Now search all static file-level symbols. Not strictly correct,
2132 but more useful than an error. */
2134 result
= lookup_static_symbol (name
, domain
);
2135 if (symbol_lookup_debug
)
2137 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2138 result
.symbol
!= NULL
2139 ? host_address_to_string (result
.symbol
)
2145 /* Check to see if the symbol is defined in BLOCK or its superiors.
2146 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2148 static struct block_symbol
2149 lookup_local_symbol (const char *name
,
2150 symbol_name_match_type match_type
,
2151 const struct block
*block
,
2152 const domain_enum domain
,
2153 enum language language
)
2156 const struct block
*static_block
= block_static_block (block
);
2157 const char *scope
= block_scope (block
);
2159 /* Check if either no block is specified or it's a global block. */
2161 if (static_block
== NULL
)
2164 while (block
!= static_block
)
2166 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2168 return (struct block_symbol
) {sym
, block
};
2170 if (language
== language_cplus
|| language
== language_fortran
)
2172 struct block_symbol blocksym
2173 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2176 if (blocksym
.symbol
!= NULL
)
2180 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2182 block
= BLOCK_SUPERBLOCK (block
);
2185 /* We've reached the end of the function without finding a result. */
2193 lookup_objfile_from_block (const struct block
*block
)
2198 block
= block_global_block (block
);
2199 /* Look through all blockvectors. */
2200 for (objfile
*obj
: current_program_space
->objfiles ())
2202 for (compunit_symtab
*cust
: obj
->compunits ())
2203 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2206 if (obj
->separate_debug_objfile_backlink
)
2207 obj
= obj
->separate_debug_objfile_backlink
;
2219 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2220 const struct block
*block
,
2221 const domain_enum domain
)
2225 if (symbol_lookup_debug
> 1)
2227 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2229 fprintf_unfiltered (gdb_stdlog
,
2230 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2231 name
, host_address_to_string (block
),
2232 objfile_debug_name (objfile
),
2233 domain_name (domain
));
2236 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2239 if (symbol_lookup_debug
> 1)
2241 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2242 host_address_to_string (sym
));
2244 return fixup_symbol_section (sym
, NULL
);
2247 if (symbol_lookup_debug
> 1)
2248 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2255 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2256 enum block_enum block_index
,
2258 const domain_enum domain
)
2260 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2262 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2264 struct block_symbol result
2265 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2267 if (result
.symbol
!= nullptr)
2274 /* Check to see if the symbol is defined in one of the OBJFILE's
2275 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2276 depending on whether or not we want to search global symbols or
2279 static struct block_symbol
2280 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2281 enum block_enum block_index
, const char *name
,
2282 const domain_enum domain
)
2284 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2286 if (symbol_lookup_debug
> 1)
2288 fprintf_unfiltered (gdb_stdlog
,
2289 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2290 objfile_debug_name (objfile
),
2291 block_index
== GLOBAL_BLOCK
2292 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2293 name
, domain_name (domain
));
2296 for (compunit_symtab
*cust
: objfile
->compunits ())
2298 const struct blockvector
*bv
;
2299 const struct block
*block
;
2300 struct block_symbol result
;
2302 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2303 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2304 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2305 result
.block
= block
;
2306 if (result
.symbol
!= NULL
)
2308 if (symbol_lookup_debug
> 1)
2310 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2311 host_address_to_string (result
.symbol
),
2312 host_address_to_string (block
));
2314 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2320 if (symbol_lookup_debug
> 1)
2321 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2325 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2326 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2327 and all associated separate debug objfiles.
2329 Normally we only look in OBJFILE, and not any separate debug objfiles
2330 because the outer loop will cause them to be searched too. This case is
2331 different. Here we're called from search_symbols where it will only
2332 call us for the objfile that contains a matching minsym. */
2334 static struct block_symbol
2335 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2336 const char *linkage_name
,
2339 enum language lang
= current_language
->la_language
;
2340 struct objfile
*main_objfile
;
2342 demangle_result_storage storage
;
2343 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2345 if (objfile
->separate_debug_objfile_backlink
)
2346 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2348 main_objfile
= objfile
;
2350 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2352 struct block_symbol result
;
2354 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2355 modified_name
, domain
);
2356 if (result
.symbol
== NULL
)
2357 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2358 modified_name
, domain
);
2359 if (result
.symbol
!= NULL
)
2366 /* A helper function that throws an exception when a symbol was found
2367 in a psymtab but not in a symtab. */
2369 static void ATTRIBUTE_NORETURN
2370 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2371 struct compunit_symtab
*cust
)
2374 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2375 %s may be an inlined function, or may be a template function\n \
2376 (if a template, try specifying an instantiation: %s<type>)."),
2377 block_index
== GLOBAL_BLOCK
? "global" : "static",
2379 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2383 /* A helper function for various lookup routines that interfaces with
2384 the "quick" symbol table functions. */
2386 static struct block_symbol
2387 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2388 enum block_enum block_index
, const char *name
,
2389 const domain_enum domain
)
2391 struct compunit_symtab
*cust
;
2392 const struct blockvector
*bv
;
2393 const struct block
*block
;
2394 struct block_symbol result
;
2399 if (symbol_lookup_debug
> 1)
2401 fprintf_unfiltered (gdb_stdlog
,
2402 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2403 objfile_debug_name (objfile
),
2404 block_index
== GLOBAL_BLOCK
2405 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2406 name
, domain_name (domain
));
2409 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2412 if (symbol_lookup_debug
> 1)
2414 fprintf_unfiltered (gdb_stdlog
,
2415 "lookup_symbol_via_quick_fns (...) = NULL\n");
2420 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2421 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2422 result
.symbol
= block_lookup_symbol (block
, name
,
2423 symbol_name_match_type::FULL
, domain
);
2424 if (result
.symbol
== NULL
)
2425 error_in_psymtab_expansion (block_index
, name
, cust
);
2427 if (symbol_lookup_debug
> 1)
2429 fprintf_unfiltered (gdb_stdlog
,
2430 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2431 host_address_to_string (result
.symbol
),
2432 host_address_to_string (block
));
2435 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2436 result
.block
= block
;
2443 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2445 const struct block
*block
,
2446 const domain_enum domain
)
2448 struct block_symbol result
;
2450 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2451 the current objfile. Searching the current objfile first is useful
2452 for both matching user expectations as well as performance. */
2454 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2455 if (result
.symbol
!= NULL
)
2458 /* If we didn't find a definition for a builtin type in the static block,
2459 search for it now. This is actually the right thing to do and can be
2460 a massive performance win. E.g., when debugging a program with lots of
2461 shared libraries we could search all of them only to find out the
2462 builtin type isn't defined in any of them. This is common for types
2464 if (domain
== VAR_DOMAIN
)
2466 struct gdbarch
*gdbarch
;
2469 gdbarch
= target_gdbarch ();
2471 gdbarch
= block_gdbarch (block
);
2472 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2474 result
.block
= NULL
;
2475 if (result
.symbol
!= NULL
)
2479 return lookup_global_symbol (name
, block
, domain
);
2485 lookup_symbol_in_static_block (const char *name
,
2486 const struct block
*block
,
2487 const domain_enum domain
)
2489 const struct block
*static_block
= block_static_block (block
);
2492 if (static_block
== NULL
)
2495 if (symbol_lookup_debug
)
2497 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2499 fprintf_unfiltered (gdb_stdlog
,
2500 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2503 host_address_to_string (block
),
2504 objfile_debug_name (objfile
),
2505 domain_name (domain
));
2508 sym
= lookup_symbol_in_block (name
,
2509 symbol_name_match_type::FULL
,
2510 static_block
, domain
);
2511 if (symbol_lookup_debug
)
2513 fprintf_unfiltered (gdb_stdlog
,
2514 "lookup_symbol_in_static_block (...) = %s\n",
2515 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2517 return (struct block_symbol
) {sym
, static_block
};
2520 /* Perform the standard symbol lookup of NAME in OBJFILE:
2521 1) First search expanded symtabs, and if not found
2522 2) Search the "quick" symtabs (partial or .gdb_index).
2523 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2525 static struct block_symbol
2526 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2527 const char *name
, const domain_enum domain
)
2529 struct block_symbol result
;
2531 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2533 if (symbol_lookup_debug
)
2535 fprintf_unfiltered (gdb_stdlog
,
2536 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2537 objfile_debug_name (objfile
),
2538 block_index
== GLOBAL_BLOCK
2539 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2540 name
, domain_name (domain
));
2543 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2545 if (result
.symbol
!= NULL
)
2547 if (symbol_lookup_debug
)
2549 fprintf_unfiltered (gdb_stdlog
,
2550 "lookup_symbol_in_objfile (...) = %s"
2552 host_address_to_string (result
.symbol
));
2557 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2559 if (symbol_lookup_debug
)
2561 fprintf_unfiltered (gdb_stdlog
,
2562 "lookup_symbol_in_objfile (...) = %s%s\n",
2563 result
.symbol
!= NULL
2564 ? host_address_to_string (result
.symbol
)
2566 result
.symbol
!= NULL
? " (via quick fns)" : "");
2571 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2573 struct global_or_static_sym_lookup_data
2575 /* The name of the symbol we are searching for. */
2578 /* The domain to use for our search. */
2581 /* The block index in which to search. */
2582 enum block_enum block_index
;
2584 /* The field where the callback should store the symbol if found.
2585 It should be initialized to {NULL, NULL} before the search is started. */
2586 struct block_symbol result
;
2589 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2590 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2591 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2592 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2595 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2598 struct global_or_static_sym_lookup_data
*data
=
2599 (struct global_or_static_sym_lookup_data
*) cb_data
;
2601 gdb_assert (data
->result
.symbol
== NULL
2602 && data
->result
.block
== NULL
);
2604 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2605 data
->name
, data
->domain
);
2607 /* If we found a match, tell the iterator to stop. Otherwise,
2609 return (data
->result
.symbol
!= NULL
);
2612 /* This function contains the common code of lookup_{global,static}_symbol.
2613 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2614 the objfile to start the lookup in. */
2616 static struct block_symbol
2617 lookup_global_or_static_symbol (const char *name
,
2618 enum block_enum block_index
,
2619 struct objfile
*objfile
,
2620 const domain_enum domain
)
2622 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2623 struct block_symbol result
;
2624 struct global_or_static_sym_lookup_data lookup_data
;
2625 struct block_symbol_cache
*bsc
;
2626 struct symbol_cache_slot
*slot
;
2628 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2629 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2631 /* First see if we can find the symbol in the cache.
2632 This works because we use the current objfile to qualify the lookup. */
2633 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2635 if (result
.symbol
!= NULL
)
2637 if (SYMBOL_LOOKUP_FAILED_P (result
))
2642 /* Do a global search (of global blocks, heh). */
2643 if (result
.symbol
== NULL
)
2645 memset (&lookup_data
, 0, sizeof (lookup_data
));
2646 lookup_data
.name
= name
;
2647 lookup_data
.block_index
= block_index
;
2648 lookup_data
.domain
= domain
;
2649 gdbarch_iterate_over_objfiles_in_search_order
2650 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
2651 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2652 result
= lookup_data
.result
;
2655 if (result
.symbol
!= NULL
)
2656 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2658 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2666 lookup_static_symbol (const char *name
, const domain_enum domain
)
2668 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2674 lookup_global_symbol (const char *name
,
2675 const struct block
*block
,
2676 const domain_enum domain
)
2678 /* If a block was passed in, we want to search the corresponding
2679 global block first. This yields "more expected" behavior, and is
2680 needed to support 'FILENAME'::VARIABLE lookups. */
2681 const struct block
*global_block
= block_global_block (block
);
2682 if (global_block
!= nullptr)
2684 symbol
*sym
= lookup_symbol_in_block (name
,
2685 symbol_name_match_type::FULL
,
2686 global_block
, domain
);
2688 return { sym
, global_block
};
2691 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2692 return lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2696 symbol_matches_domain (enum language symbol_language
,
2697 domain_enum symbol_domain
,
2700 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2701 Similarly, any Ada type declaration implicitly defines a typedef. */
2702 if (symbol_language
== language_cplus
2703 || symbol_language
== language_d
2704 || symbol_language
== language_ada
2705 || symbol_language
== language_rust
)
2707 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2708 && symbol_domain
== STRUCT_DOMAIN
)
2711 /* For all other languages, strict match is required. */
2712 return (symbol_domain
== domain
);
2718 lookup_transparent_type (const char *name
)
2720 return current_language
->la_lookup_transparent_type (name
);
2723 /* A helper for basic_lookup_transparent_type that interfaces with the
2724 "quick" symbol table functions. */
2726 static struct type
*
2727 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2728 enum block_enum block_index
,
2731 struct compunit_symtab
*cust
;
2732 const struct blockvector
*bv
;
2733 const struct block
*block
;
2738 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2743 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2744 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2745 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2746 block_find_non_opaque_type
, NULL
);
2748 error_in_psymtab_expansion (block_index
, name
, cust
);
2749 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2750 return SYMBOL_TYPE (sym
);
2753 /* Subroutine of basic_lookup_transparent_type to simplify it.
2754 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2755 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2757 static struct type
*
2758 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2759 enum block_enum block_index
,
2762 const struct blockvector
*bv
;
2763 const struct block
*block
;
2764 const struct symbol
*sym
;
2766 for (compunit_symtab
*cust
: objfile
->compunits ())
2768 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2769 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2770 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2771 block_find_non_opaque_type
, NULL
);
2774 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2775 return SYMBOL_TYPE (sym
);
2782 /* The standard implementation of lookup_transparent_type. This code
2783 was modeled on lookup_symbol -- the parts not relevant to looking
2784 up types were just left out. In particular it's assumed here that
2785 types are available in STRUCT_DOMAIN and only in file-static or
2789 basic_lookup_transparent_type (const char *name
)
2793 /* Now search all the global symbols. Do the symtab's first, then
2794 check the psymtab's. If a psymtab indicates the existence
2795 of the desired name as a global, then do psymtab-to-symtab
2796 conversion on the fly and return the found symbol. */
2798 for (objfile
*objfile
: current_program_space
->objfiles ())
2800 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2805 for (objfile
*objfile
: current_program_space
->objfiles ())
2807 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2812 /* Now search the static file-level symbols.
2813 Not strictly correct, but more useful than an error.
2814 Do the symtab's first, then
2815 check the psymtab's. If a psymtab indicates the existence
2816 of the desired name as a file-level static, then do psymtab-to-symtab
2817 conversion on the fly and return the found symbol. */
2819 for (objfile
*objfile
: current_program_space
->objfiles ())
2821 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2826 for (objfile
*objfile
: current_program_space
->objfiles ())
2828 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2833 return (struct type
*) 0;
2839 iterate_over_symbols (const struct block
*block
,
2840 const lookup_name_info
&name
,
2841 const domain_enum domain
,
2842 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2844 struct block_iterator iter
;
2847 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2849 if (symbol_matches_domain (sym
->language (), SYMBOL_DOMAIN (sym
), domain
))
2851 struct block_symbol block_sym
= {sym
, block
};
2853 if (!callback (&block_sym
))
2863 iterate_over_symbols_terminated
2864 (const struct block
*block
,
2865 const lookup_name_info
&name
,
2866 const domain_enum domain
,
2867 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2869 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2871 struct block_symbol block_sym
= {nullptr, block
};
2872 return callback (&block_sym
);
2875 /* Find the compunit symtab associated with PC and SECTION.
2876 This will read in debug info as necessary. */
2878 struct compunit_symtab
*
2879 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2881 struct compunit_symtab
*best_cust
= NULL
;
2882 CORE_ADDR distance
= 0;
2883 struct bound_minimal_symbol msymbol
;
2885 /* If we know that this is not a text address, return failure. This is
2886 necessary because we loop based on the block's high and low code
2887 addresses, which do not include the data ranges, and because
2888 we call find_pc_sect_psymtab which has a similar restriction based
2889 on the partial_symtab's texthigh and textlow. */
2890 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2891 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2894 /* Search all symtabs for the one whose file contains our address, and which
2895 is the smallest of all the ones containing the address. This is designed
2896 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2897 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2898 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2900 This happens for native ecoff format, where code from included files
2901 gets its own symtab. The symtab for the included file should have
2902 been read in already via the dependency mechanism.
2903 It might be swifter to create several symtabs with the same name
2904 like xcoff does (I'm not sure).
2906 It also happens for objfiles that have their functions reordered.
2907 For these, the symtab we are looking for is not necessarily read in. */
2909 for (objfile
*obj_file
: current_program_space
->objfiles ())
2911 for (compunit_symtab
*cust
: obj_file
->compunits ())
2913 const struct block
*b
;
2914 const struct blockvector
*bv
;
2916 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2917 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2919 if (BLOCK_START (b
) <= pc
2920 && BLOCK_END (b
) > pc
2922 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2924 /* For an objfile that has its functions reordered,
2925 find_pc_psymtab will find the proper partial symbol table
2926 and we simply return its corresponding symtab. */
2927 /* In order to better support objfiles that contain both
2928 stabs and coff debugging info, we continue on if a psymtab
2930 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2932 struct compunit_symtab
*result
;
2935 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2945 struct block_iterator iter
;
2946 struct symbol
*sym
= NULL
;
2948 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2950 fixup_symbol_section (sym
, obj_file
);
2951 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2957 continue; /* No symbol in this symtab matches
2960 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2966 if (best_cust
!= NULL
)
2969 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2971 for (objfile
*objf
: current_program_space
->objfiles ())
2973 struct compunit_symtab
*result
;
2977 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2988 /* Find the compunit symtab associated with PC.
2989 This will read in debug info as necessary.
2990 Backward compatibility, no section. */
2992 struct compunit_symtab
*
2993 find_pc_compunit_symtab (CORE_ADDR pc
)
2995 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
3001 find_symbol_at_address (CORE_ADDR address
)
3003 for (objfile
*objfile
: current_program_space
->objfiles ())
3005 if (objfile
->sf
== NULL
3006 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
3009 struct compunit_symtab
*symtab
3010 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
3013 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3015 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3017 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3018 struct block_iterator iter
;
3021 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3023 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3024 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3036 /* Find the source file and line number for a given PC value and SECTION.
3037 Return a structure containing a symtab pointer, a line number,
3038 and a pc range for the entire source line.
3039 The value's .pc field is NOT the specified pc.
3040 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3041 use the line that ends there. Otherwise, in that case, the line
3042 that begins there is used. */
3044 /* The big complication here is that a line may start in one file, and end just
3045 before the start of another file. This usually occurs when you #include
3046 code in the middle of a subroutine. To properly find the end of a line's PC
3047 range, we must search all symtabs associated with this compilation unit, and
3048 find the one whose first PC is closer than that of the next line in this
3051 struct symtab_and_line
3052 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3054 struct compunit_symtab
*cust
;
3055 struct linetable
*l
;
3057 struct linetable_entry
*item
;
3058 const struct blockvector
*bv
;
3059 struct bound_minimal_symbol msymbol
;
3061 /* Info on best line seen so far, and where it starts, and its file. */
3063 struct linetable_entry
*best
= NULL
;
3064 CORE_ADDR best_end
= 0;
3065 struct symtab
*best_symtab
= 0;
3067 /* Store here the first line number
3068 of a file which contains the line at the smallest pc after PC.
3069 If we don't find a line whose range contains PC,
3070 we will use a line one less than this,
3071 with a range from the start of that file to the first line's pc. */
3072 struct linetable_entry
*alt
= NULL
;
3074 /* Info on best line seen in this file. */
3076 struct linetable_entry
*prev
;
3078 /* If this pc is not from the current frame,
3079 it is the address of the end of a call instruction.
3080 Quite likely that is the start of the following statement.
3081 But what we want is the statement containing the instruction.
3082 Fudge the pc to make sure we get that. */
3084 /* It's tempting to assume that, if we can't find debugging info for
3085 any function enclosing PC, that we shouldn't search for line
3086 number info, either. However, GAS can emit line number info for
3087 assembly files --- very helpful when debugging hand-written
3088 assembly code. In such a case, we'd have no debug info for the
3089 function, but we would have line info. */
3094 /* elz: added this because this function returned the wrong
3095 information if the pc belongs to a stub (import/export)
3096 to call a shlib function. This stub would be anywhere between
3097 two functions in the target, and the line info was erroneously
3098 taken to be the one of the line before the pc. */
3100 /* RT: Further explanation:
3102 * We have stubs (trampolines) inserted between procedures.
3104 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3105 * exists in the main image.
3107 * In the minimal symbol table, we have a bunch of symbols
3108 * sorted by start address. The stubs are marked as "trampoline",
3109 * the others appear as text. E.g.:
3111 * Minimal symbol table for main image
3112 * main: code for main (text symbol)
3113 * shr1: stub (trampoline symbol)
3114 * foo: code for foo (text symbol)
3116 * Minimal symbol table for "shr1" image:
3118 * shr1: code for shr1 (text symbol)
3121 * So the code below is trying to detect if we are in the stub
3122 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3123 * and if found, do the symbolization from the real-code address
3124 * rather than the stub address.
3126 * Assumptions being made about the minimal symbol table:
3127 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3128 * if we're really in the trampoline.s If we're beyond it (say
3129 * we're in "foo" in the above example), it'll have a closer
3130 * symbol (the "foo" text symbol for example) and will not
3131 * return the trampoline.
3132 * 2. lookup_minimal_symbol_text() will find a real text symbol
3133 * corresponding to the trampoline, and whose address will
3134 * be different than the trampoline address. I put in a sanity
3135 * check for the address being the same, to avoid an
3136 * infinite recursion.
3138 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3139 if (msymbol
.minsym
!= NULL
)
3140 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3142 struct bound_minimal_symbol mfunsym
3143 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3146 if (mfunsym
.minsym
== NULL
)
3147 /* I eliminated this warning since it is coming out
3148 * in the following situation:
3149 * gdb shmain // test program with shared libraries
3150 * (gdb) break shr1 // function in shared lib
3151 * Warning: In stub for ...
3152 * In the above situation, the shared lib is not loaded yet,
3153 * so of course we can't find the real func/line info,
3154 * but the "break" still works, and the warning is annoying.
3155 * So I commented out the warning. RT */
3156 /* warning ("In stub for %s; unable to find real function/line info",
3157 msymbol->linkage_name ()); */
3160 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3161 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3162 /* Avoid infinite recursion */
3163 /* See above comment about why warning is commented out. */
3164 /* warning ("In stub for %s; unable to find real function/line info",
3165 msymbol->linkage_name ()); */
3169 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3172 symtab_and_line val
;
3173 val
.pspace
= current_program_space
;
3175 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3178 /* If no symbol information, return previous pc. */
3185 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3187 /* Look at all the symtabs that share this blockvector.
3188 They all have the same apriori range, that we found was right;
3189 but they have different line tables. */
3191 for (symtab
*iter_s
: compunit_filetabs (cust
))
3193 /* Find the best line in this symtab. */
3194 l
= SYMTAB_LINETABLE (iter_s
);
3200 /* I think len can be zero if the symtab lacks line numbers
3201 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3202 I'm not sure which, and maybe it depends on the symbol
3208 item
= l
->item
; /* Get first line info. */
3210 /* Is this file's first line closer than the first lines of other files?
3211 If so, record this file, and its first line, as best alternate. */
3212 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3215 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3216 const struct linetable_entry
& lhs
)->bool
3218 return comp_pc
< lhs
.pc
;
3221 struct linetable_entry
*first
= item
;
3222 struct linetable_entry
*last
= item
+ len
;
3223 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3226 /* Found a matching item. Skip backwards over any end of
3227 sequence markers. */
3228 for (prev
= item
- 1; prev
->line
== 0 && prev
!= first
; prev
--)
3232 /* At this point, prev points at the line whose start addr is <= pc, and
3233 item points at the next line. If we ran off the end of the linetable
3234 (pc >= start of the last line), then prev == item. If pc < start of
3235 the first line, prev will not be set. */
3237 /* Is this file's best line closer than the best in the other files?
3238 If so, record this file, and its best line, as best so far. Don't
3239 save prev if it represents the end of a function (i.e. line number
3240 0) instead of a real line. */
3242 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3245 best_symtab
= iter_s
;
3247 /* Discard BEST_END if it's before the PC of the current BEST. */
3248 if (best_end
<= best
->pc
)
3252 /* If another line (denoted by ITEM) is in the linetable and its
3253 PC is after BEST's PC, but before the current BEST_END, then
3254 use ITEM's PC as the new best_end. */
3255 if (best
&& item
< last
&& item
->pc
> best
->pc
3256 && (best_end
== 0 || best_end
> item
->pc
))
3257 best_end
= item
->pc
;
3262 /* If we didn't find any line number info, just return zeros.
3263 We used to return alt->line - 1 here, but that could be
3264 anywhere; if we don't have line number info for this PC,
3265 don't make some up. */
3268 else if (best
->line
== 0)
3270 /* If our best fit is in a range of PC's for which no line
3271 number info is available (line number is zero) then we didn't
3272 find any valid line information. */
3277 val
.symtab
= best_symtab
;
3278 val
.line
= best
->line
;
3280 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3285 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3287 val
.section
= section
;
3291 /* Backward compatibility (no section). */
3293 struct symtab_and_line
3294 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3296 struct obj_section
*section
;
3298 section
= find_pc_overlay (pc
);
3299 if (pc_in_unmapped_range (pc
, section
))
3300 pc
= overlay_mapped_address (pc
, section
);
3301 return find_pc_sect_line (pc
, section
, notcurrent
);
3307 find_pc_line_symtab (CORE_ADDR pc
)
3309 struct symtab_and_line sal
;
3311 /* This always passes zero for NOTCURRENT to find_pc_line.
3312 There are currently no callers that ever pass non-zero. */
3313 sal
= find_pc_line (pc
, 0);
3317 /* Find line number LINE in any symtab whose name is the same as
3320 If found, return the symtab that contains the linetable in which it was
3321 found, set *INDEX to the index in the linetable of the best entry
3322 found, and set *EXACT_MATCH to true if the value returned is an
3325 If not found, return NULL. */
3328 find_line_symtab (struct symtab
*sym_tab
, int line
,
3329 int *index
, bool *exact_match
)
3331 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3333 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3337 struct linetable
*best_linetable
;
3338 struct symtab
*best_symtab
;
3340 /* First try looking it up in the given symtab. */
3341 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3342 best_symtab
= sym_tab
;
3343 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3344 if (best_index
< 0 || !exact
)
3346 /* Didn't find an exact match. So we better keep looking for
3347 another symtab with the same name. In the case of xcoff,
3348 multiple csects for one source file (produced by IBM's FORTRAN
3349 compiler) produce multiple symtabs (this is unavoidable
3350 assuming csects can be at arbitrary places in memory and that
3351 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3353 /* BEST is the smallest linenumber > LINE so far seen,
3354 or 0 if none has been seen so far.
3355 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3358 if (best_index
>= 0)
3359 best
= best_linetable
->item
[best_index
].line
;
3363 for (objfile
*objfile
: current_program_space
->objfiles ())
3366 objfile
->sf
->qf
->expand_symtabs_with_fullname
3367 (objfile
, symtab_to_fullname (sym_tab
));
3370 for (objfile
*objfile
: current_program_space
->objfiles ())
3372 for (compunit_symtab
*cu
: objfile
->compunits ())
3374 for (symtab
*s
: compunit_filetabs (cu
))
3376 struct linetable
*l
;
3379 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3381 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3382 symtab_to_fullname (s
)) != 0)
3384 l
= SYMTAB_LINETABLE (s
);
3385 ind
= find_line_common (l
, line
, &exact
, 0);
3395 if (best
== 0 || l
->item
[ind
].line
< best
)
3397 best
= l
->item
[ind
].line
;
3412 *index
= best_index
;
3414 *exact_match
= (exact
!= 0);
3419 /* Given SYMTAB, returns all the PCs function in the symtab that
3420 exactly match LINE. Returns an empty vector if there are no exact
3421 matches, but updates BEST_ITEM in this case. */
3423 std::vector
<CORE_ADDR
>
3424 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3425 struct linetable_entry
**best_item
)
3428 std::vector
<CORE_ADDR
> result
;
3430 /* First, collect all the PCs that are at this line. */
3436 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3443 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3445 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
3451 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3459 /* Set the PC value for a given source file and line number and return true.
3460 Returns false for invalid line number (and sets the PC to 0).
3461 The source file is specified with a struct symtab. */
3464 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3466 struct linetable
*l
;
3473 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3476 l
= SYMTAB_LINETABLE (symtab
);
3477 *pc
= l
->item
[ind
].pc
;
3484 /* Find the range of pc values in a line.
3485 Store the starting pc of the line into *STARTPTR
3486 and the ending pc (start of next line) into *ENDPTR.
3487 Returns true to indicate success.
3488 Returns false if could not find the specified line. */
3491 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3494 CORE_ADDR startaddr
;
3495 struct symtab_and_line found_sal
;
3498 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3501 /* This whole function is based on address. For example, if line 10 has
3502 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3503 "info line *0x123" should say the line goes from 0x100 to 0x200
3504 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3505 This also insures that we never give a range like "starts at 0x134
3506 and ends at 0x12c". */
3508 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3509 if (found_sal
.line
!= sal
.line
)
3511 /* The specified line (sal) has zero bytes. */
3512 *startptr
= found_sal
.pc
;
3513 *endptr
= found_sal
.pc
;
3517 *startptr
= found_sal
.pc
;
3518 *endptr
= found_sal
.end
;
3523 /* Given a line table and a line number, return the index into the line
3524 table for the pc of the nearest line whose number is >= the specified one.
3525 Return -1 if none is found. The value is >= 0 if it is an index.
3526 START is the index at which to start searching the line table.
3528 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3531 find_line_common (struct linetable
*l
, int lineno
,
3532 int *exact_match
, int start
)
3537 /* BEST is the smallest linenumber > LINENO so far seen,
3538 or 0 if none has been seen so far.
3539 BEST_INDEX identifies the item for it. */
3541 int best_index
= -1;
3552 for (i
= start
; i
< len
; i
++)
3554 struct linetable_entry
*item
= &(l
->item
[i
]);
3556 if (item
->line
== lineno
)
3558 /* Return the first (lowest address) entry which matches. */
3563 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3570 /* If we got here, we didn't get an exact match. */
3575 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3577 struct symtab_and_line sal
;
3579 sal
= find_pc_line (pc
, 0);
3582 return sal
.symtab
!= 0;
3585 /* Helper for find_function_start_sal. Does most of the work, except
3586 setting the sal's symbol. */
3588 static symtab_and_line
3589 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3592 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3594 if (funfirstline
&& sal
.symtab
!= NULL
3595 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3596 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3598 struct gdbarch
*gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (sal
.symtab
));
3601 if (gdbarch_skip_entrypoint_p (gdbarch
))
3602 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3606 /* We always should have a line for the function start address.
3607 If we don't, something is odd. Create a plain SAL referring
3608 just the PC and hope that skip_prologue_sal (if requested)
3609 can find a line number for after the prologue. */
3610 if (sal
.pc
< func_addr
)
3613 sal
.pspace
= current_program_space
;
3615 sal
.section
= section
;
3619 skip_prologue_sal (&sal
);
3627 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3631 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3633 /* find_function_start_sal_1 does a linetable search, so it finds
3634 the symtab and linenumber, but not a symbol. Fill in the
3635 function symbol too. */
3636 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3644 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3646 fixup_symbol_section (sym
, NULL
);
3648 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3649 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3656 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3657 address for that function that has an entry in SYMTAB's line info
3658 table. If such an entry cannot be found, return FUNC_ADDR
3662 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3664 CORE_ADDR func_start
, func_end
;
3665 struct linetable
*l
;
3668 /* Give up if this symbol has no lineinfo table. */
3669 l
= SYMTAB_LINETABLE (symtab
);
3673 /* Get the range for the function's PC values, or give up if we
3674 cannot, for some reason. */
3675 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3678 /* Linetable entries are ordered by PC values, see the commentary in
3679 symtab.h where `struct linetable' is defined. Thus, the first
3680 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3681 address we are looking for. */
3682 for (i
= 0; i
< l
->nitems
; i
++)
3684 struct linetable_entry
*item
= &(l
->item
[i
]);
3686 /* Don't use line numbers of zero, they mark special entries in
3687 the table. See the commentary on symtab.h before the
3688 definition of struct linetable. */
3689 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3696 /* Adjust SAL to the first instruction past the function prologue.
3697 If the PC was explicitly specified, the SAL is not changed.
3698 If the line number was explicitly specified then the SAL can still be
3699 updated, unless the language for SAL is assembler, in which case the SAL
3700 will be left unchanged.
3701 If SAL is already past the prologue, then do nothing. */
3704 skip_prologue_sal (struct symtab_and_line
*sal
)
3707 struct symtab_and_line start_sal
;
3708 CORE_ADDR pc
, saved_pc
;
3709 struct obj_section
*section
;
3711 struct objfile
*objfile
;
3712 struct gdbarch
*gdbarch
;
3713 const struct block
*b
, *function_block
;
3714 int force_skip
, skip
;
3716 /* Do not change the SAL if PC was specified explicitly. */
3717 if (sal
->explicit_pc
)
3720 /* In assembly code, if the user asks for a specific line then we should
3721 not adjust the SAL. The user already has instruction level
3722 visibility in this case, so selecting a line other than one requested
3723 is likely to be the wrong choice. */
3724 if (sal
->symtab
!= nullptr
3725 && sal
->explicit_line
3726 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3729 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3731 switch_to_program_space_and_thread (sal
->pspace
);
3733 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3736 fixup_symbol_section (sym
, NULL
);
3738 objfile
= symbol_objfile (sym
);
3739 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3740 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3741 name
= sym
->linkage_name ();
3745 struct bound_minimal_symbol msymbol
3746 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3748 if (msymbol
.minsym
== NULL
)
3751 objfile
= msymbol
.objfile
;
3752 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3753 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3754 name
= msymbol
.minsym
->linkage_name ();
3757 gdbarch
= get_objfile_arch (objfile
);
3759 /* Process the prologue in two passes. In the first pass try to skip the
3760 prologue (SKIP is true) and verify there is a real need for it (indicated
3761 by FORCE_SKIP). If no such reason was found run a second pass where the
3762 prologue is not skipped (SKIP is false). */
3767 /* Be conservative - allow direct PC (without skipping prologue) only if we
3768 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3769 have to be set by the caller so we use SYM instead. */
3771 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3779 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3780 so that gdbarch_skip_prologue has something unique to work on. */
3781 if (section_is_overlay (section
) && !section_is_mapped (section
))
3782 pc
= overlay_unmapped_address (pc
, section
);
3784 /* Skip "first line" of function (which is actually its prologue). */
3785 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3786 if (gdbarch_skip_entrypoint_p (gdbarch
))
3787 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3789 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3791 /* For overlays, map pc back into its mapped VMA range. */
3792 pc
= overlay_mapped_address (pc
, section
);
3794 /* Calculate line number. */
3795 start_sal
= find_pc_sect_line (pc
, section
, 0);
3797 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3798 line is still part of the same function. */
3799 if (skip
&& start_sal
.pc
!= pc
3800 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3801 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3802 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3803 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3805 /* First pc of next line */
3807 /* Recalculate the line number (might not be N+1). */
3808 start_sal
= find_pc_sect_line (pc
, section
, 0);
3811 /* On targets with executable formats that don't have a concept of
3812 constructors (ELF with .init has, PE doesn't), gcc emits a call
3813 to `__main' in `main' between the prologue and before user
3815 if (gdbarch_skip_main_prologue_p (gdbarch
)
3816 && name
&& strcmp_iw (name
, "main") == 0)
3818 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3819 /* Recalculate the line number (might not be N+1). */
3820 start_sal
= find_pc_sect_line (pc
, section
, 0);
3824 while (!force_skip
&& skip
--);
3826 /* If we still don't have a valid source line, try to find the first
3827 PC in the lineinfo table that belongs to the same function. This
3828 happens with COFF debug info, which does not seem to have an
3829 entry in lineinfo table for the code after the prologue which has
3830 no direct relation to source. For example, this was found to be
3831 the case with the DJGPP target using "gcc -gcoff" when the
3832 compiler inserted code after the prologue to make sure the stack
3834 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3836 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3837 /* Recalculate the line number. */
3838 start_sal
= find_pc_sect_line (pc
, section
, 0);
3841 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3842 forward SAL to the end of the prologue. */
3847 sal
->section
= section
;
3848 sal
->symtab
= start_sal
.symtab
;
3849 sal
->line
= start_sal
.line
;
3850 sal
->end
= start_sal
.end
;
3852 /* Check if we are now inside an inlined function. If we can,
3853 use the call site of the function instead. */
3854 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3855 function_block
= NULL
;
3858 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3860 else if (BLOCK_FUNCTION (b
) != NULL
)
3862 b
= BLOCK_SUPERBLOCK (b
);
3864 if (function_block
!= NULL
3865 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3867 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3868 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3872 /* Given PC at the function's start address, attempt to find the
3873 prologue end using SAL information. Return zero if the skip fails.
3875 A non-optimized prologue traditionally has one SAL for the function
3876 and a second for the function body. A single line function has
3877 them both pointing at the same line.
3879 An optimized prologue is similar but the prologue may contain
3880 instructions (SALs) from the instruction body. Need to skip those
3881 while not getting into the function body.
3883 The functions end point and an increasing SAL line are used as
3884 indicators of the prologue's endpoint.
3886 This code is based on the function refine_prologue_limit
3890 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3892 struct symtab_and_line prologue_sal
;
3895 const struct block
*bl
;
3897 /* Get an initial range for the function. */
3898 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3899 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3901 prologue_sal
= find_pc_line (start_pc
, 0);
3902 if (prologue_sal
.line
!= 0)
3904 /* For languages other than assembly, treat two consecutive line
3905 entries at the same address as a zero-instruction prologue.
3906 The GNU assembler emits separate line notes for each instruction
3907 in a multi-instruction macro, but compilers generally will not
3909 if (prologue_sal
.symtab
->language
!= language_asm
)
3911 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3914 /* Skip any earlier lines, and any end-of-sequence marker
3915 from a previous function. */
3916 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3917 || linetable
->item
[idx
].line
== 0)
3920 if (idx
+1 < linetable
->nitems
3921 && linetable
->item
[idx
+1].line
!= 0
3922 && linetable
->item
[idx
+1].pc
== start_pc
)
3926 /* If there is only one sal that covers the entire function,
3927 then it is probably a single line function, like
3929 if (prologue_sal
.end
>= end_pc
)
3932 while (prologue_sal
.end
< end_pc
)
3934 struct symtab_and_line sal
;
3936 sal
= find_pc_line (prologue_sal
.end
, 0);
3939 /* Assume that a consecutive SAL for the same (or larger)
3940 line mark the prologue -> body transition. */
3941 if (sal
.line
>= prologue_sal
.line
)
3943 /* Likewise if we are in a different symtab altogether
3944 (e.g. within a file included via #include). */
3945 if (sal
.symtab
!= prologue_sal
.symtab
)
3948 /* The line number is smaller. Check that it's from the
3949 same function, not something inlined. If it's inlined,
3950 then there is no point comparing the line numbers. */
3951 bl
= block_for_pc (prologue_sal
.end
);
3954 if (block_inlined_p (bl
))
3956 if (BLOCK_FUNCTION (bl
))
3961 bl
= BLOCK_SUPERBLOCK (bl
);
3966 /* The case in which compiler's optimizer/scheduler has
3967 moved instructions into the prologue. We look ahead in
3968 the function looking for address ranges whose
3969 corresponding line number is less the first one that we
3970 found for the function. This is more conservative then
3971 refine_prologue_limit which scans a large number of SALs
3972 looking for any in the prologue. */
3977 if (prologue_sal
.end
< end_pc
)
3978 /* Return the end of this line, or zero if we could not find a
3980 return prologue_sal
.end
;
3982 /* Don't return END_PC, which is past the end of the function. */
3983 return prologue_sal
.pc
;
3989 find_function_alias_target (bound_minimal_symbol msymbol
)
3991 CORE_ADDR func_addr
;
3992 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
3995 symbol
*sym
= find_pc_function (func_addr
);
3997 && SYMBOL_CLASS (sym
) == LOC_BLOCK
3998 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
4005 /* If P is of the form "operator[ \t]+..." where `...' is
4006 some legitimate operator text, return a pointer to the
4007 beginning of the substring of the operator text.
4008 Otherwise, return "". */
4011 operator_chars (const char *p
, const char **end
)
4014 if (!startswith (p
, CP_OPERATOR_STR
))
4016 p
+= CP_OPERATOR_LEN
;
4018 /* Don't get faked out by `operator' being part of a longer
4020 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4023 /* Allow some whitespace between `operator' and the operator symbol. */
4024 while (*p
== ' ' || *p
== '\t')
4027 /* Recognize 'operator TYPENAME'. */
4029 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4031 const char *q
= p
+ 1;
4033 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4042 case '\\': /* regexp quoting */
4045 if (p
[2] == '=') /* 'operator\*=' */
4047 else /* 'operator\*' */
4051 else if (p
[1] == '[')
4054 error (_("mismatched quoting on brackets, "
4055 "try 'operator\\[\\]'"));
4056 else if (p
[2] == '\\' && p
[3] == ']')
4058 *end
= p
+ 4; /* 'operator\[\]' */
4062 error (_("nothing is allowed between '[' and ']'"));
4066 /* Gratuitous quote: skip it and move on. */
4088 if (p
[0] == '-' && p
[1] == '>')
4090 /* Struct pointer member operator 'operator->'. */
4093 *end
= p
+ 3; /* 'operator->*' */
4096 else if (p
[2] == '\\')
4098 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4103 *end
= p
+ 2; /* 'operator->' */
4107 if (p
[1] == '=' || p
[1] == p
[0])
4118 error (_("`operator ()' must be specified "
4119 "without whitespace in `()'"));
4124 error (_("`operator ?:' must be specified "
4125 "without whitespace in `?:'"));
4130 error (_("`operator []' must be specified "
4131 "without whitespace in `[]'"));
4135 error (_("`operator %s' not supported"), p
);
4144 /* What part to match in a file name. */
4146 struct filename_partial_match_opts
4148 /* Only match the directory name part. */
4149 bool dirname
= false;
4151 /* Only match the basename part. */
4152 bool basename
= false;
4155 /* Data structure to maintain printing state for output_source_filename. */
4157 struct output_source_filename_data
4159 /* Output only filenames matching REGEXP. */
4161 gdb::optional
<compiled_regex
> c_regexp
;
4162 /* Possibly only match a part of the filename. */
4163 filename_partial_match_opts partial_match
;
4166 /* Cache of what we've seen so far. */
4167 struct filename_seen_cache
*filename_seen_cache
;
4169 /* Flag of whether we're printing the first one. */
4173 /* Slave routine for sources_info. Force line breaks at ,'s.
4174 NAME is the name to print.
4175 DATA contains the state for printing and watching for duplicates. */
4178 output_source_filename (const char *name
,
4179 struct output_source_filename_data
*data
)
4181 /* Since a single source file can result in several partial symbol
4182 tables, we need to avoid printing it more than once. Note: if
4183 some of the psymtabs are read in and some are not, it gets
4184 printed both under "Source files for which symbols have been
4185 read" and "Source files for which symbols will be read in on
4186 demand". I consider this a reasonable way to deal with the
4187 situation. I'm not sure whether this can also happen for
4188 symtabs; it doesn't hurt to check. */
4190 /* Was NAME already seen? */
4191 if (data
->filename_seen_cache
->seen (name
))
4193 /* Yes; don't print it again. */
4197 /* Does it match data->regexp? */
4198 if (data
->c_regexp
.has_value ())
4200 const char *to_match
;
4201 std::string dirname
;
4203 if (data
->partial_match
.dirname
)
4205 dirname
= ldirname (name
);
4206 to_match
= dirname
.c_str ();
4208 else if (data
->partial_match
.basename
)
4209 to_match
= lbasename (name
);
4213 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4217 /* Print it and reset *FIRST. */
4219 printf_filtered (", ");
4223 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4226 /* A callback for map_partial_symbol_filenames. */
4229 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4232 output_source_filename (fullname
? fullname
: filename
,
4233 (struct output_source_filename_data
*) data
);
4236 using isrc_flag_option_def
4237 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4239 static const gdb::option::option_def info_sources_option_defs
[] = {
4241 isrc_flag_option_def
{
4243 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4244 N_("Show only the files having a dirname matching REGEXP."),
4247 isrc_flag_option_def
{
4249 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4250 N_("Show only the files having a basename matching REGEXP."),
4255 /* Create an option_def_group for the "info sources" options, with
4256 ISRC_OPTS as context. */
4258 static inline gdb::option::option_def_group
4259 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4261 return {{info_sources_option_defs
}, isrc_opts
};
4264 /* Prints the header message for the source files that will be printed
4265 with the matching info present in DATA. SYMBOL_MSG is a message
4266 that tells what will or has been done with the symbols of the
4267 matching source files. */
4270 print_info_sources_header (const char *symbol_msg
,
4271 const struct output_source_filename_data
*data
)
4273 puts_filtered (symbol_msg
);
4274 if (!data
->regexp
.empty ())
4276 if (data
->partial_match
.dirname
)
4277 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4278 data
->regexp
.c_str ());
4279 else if (data
->partial_match
.basename
)
4280 printf_filtered (_("(basename matching regular expression \"%s\")"),
4281 data
->regexp
.c_str ());
4283 printf_filtered (_("(filename matching regular expression \"%s\")"),
4284 data
->regexp
.c_str ());
4286 puts_filtered ("\n");
4289 /* Completer for "info sources". */
4292 info_sources_command_completer (cmd_list_element
*ignore
,
4293 completion_tracker
&tracker
,
4294 const char *text
, const char *word
)
4296 const auto group
= make_info_sources_options_def_group (nullptr);
4297 if (gdb::option::complete_options
4298 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4303 info_sources_command (const char *args
, int from_tty
)
4305 struct output_source_filename_data data
;
4307 if (!have_full_symbols () && !have_partial_symbols ())
4309 error (_("No symbol table is loaded. Use the \"file\" command."));
4312 filename_seen_cache filenames_seen
;
4314 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4316 gdb::option::process_options
4317 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4319 if (args
!= NULL
&& *args
!= '\000')
4322 data
.filename_seen_cache
= &filenames_seen
;
4325 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4326 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4327 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4328 && data
.regexp
.empty ())
4329 error (_("Missing REGEXP for 'info sources'."));
4331 if (data
.regexp
.empty ())
4332 data
.c_regexp
.reset ();
4335 int cflags
= REG_NOSUB
;
4336 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4337 cflags
|= REG_ICASE
;
4339 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4340 _("Invalid regexp"));
4343 print_info_sources_header
4344 (_("Source files for which symbols have been read in:\n"), &data
);
4346 for (objfile
*objfile
: current_program_space
->objfiles ())
4348 for (compunit_symtab
*cu
: objfile
->compunits ())
4350 for (symtab
*s
: compunit_filetabs (cu
))
4352 const char *fullname
= symtab_to_fullname (s
);
4354 output_source_filename (fullname
, &data
);
4358 printf_filtered ("\n\n");
4360 print_info_sources_header
4361 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4363 filenames_seen
.clear ();
4365 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4366 1 /*need_fullname*/);
4367 printf_filtered ("\n");
4370 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4371 true compare only lbasename of FILENAMES. */
4374 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4377 if (filenames
.empty ())
4380 for (const char *name
: filenames
)
4382 name
= (basenames
? lbasename (name
) : name
);
4383 if (compare_filenames_for_search (file
, name
))
4390 /* Helper function for std::sort on symbol_search objects. Can only sort
4391 symbols, not minimal symbols. */
4394 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4395 const symbol_search
&sym_b
)
4399 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4400 symbol_symtab (sym_b
.symbol
)->filename
);
4404 if (sym_a
.block
!= sym_b
.block
)
4405 return sym_a
.block
- sym_b
.block
;
4407 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4410 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4411 If SYM has no symbol_type or symbol_name, returns false. */
4414 treg_matches_sym_type_name (const compiled_regex
&treg
,
4415 const struct symbol
*sym
)
4417 struct type
*sym_type
;
4418 std::string printed_sym_type_name
;
4420 if (symbol_lookup_debug
> 1)
4422 fprintf_unfiltered (gdb_stdlog
,
4423 "treg_matches_sym_type_name\n sym %s\n",
4424 sym
->natural_name ());
4427 sym_type
= SYMBOL_TYPE (sym
);
4428 if (sym_type
== NULL
)
4432 scoped_switch_to_sym_language_if_auto
l (sym
);
4434 printed_sym_type_name
= type_to_string (sym_type
);
4438 if (symbol_lookup_debug
> 1)
4440 fprintf_unfiltered (gdb_stdlog
,
4441 " sym_type_name %s\n",
4442 printed_sym_type_name
.c_str ());
4446 if (printed_sym_type_name
.empty ())
4449 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4455 global_symbol_searcher::is_suitable_msymbol
4456 (const enum search_domain kind
, const minimal_symbol
*msymbol
)
4458 switch (MSYMBOL_TYPE (msymbol
))
4464 return kind
== VARIABLES_DOMAIN
;
4467 case mst_solib_trampoline
:
4468 case mst_text_gnu_ifunc
:
4469 return kind
== FUNCTIONS_DOMAIN
;
4478 global_symbol_searcher::expand_symtabs
4479 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
) const
4481 enum search_domain kind
= m_kind
;
4482 bool found_msymbol
= false;
4485 objfile
->sf
->qf
->expand_symtabs_matching
4487 [&] (const char *filename
, bool basenames
)
4489 return file_matches (filename
, filenames
, basenames
);
4491 lookup_name_info::match_any (),
4492 [&] (const char *symname
)
4494 return (!preg
.has_value ()
4495 || preg
->exec (symname
, 0, NULL
, 0) == 0);
4500 /* Here, we search through the minimal symbol tables for functions and
4501 variables that match, and force their symbols to be read. This is in
4502 particular necessary for demangled variable names, which are no longer
4503 put into the partial symbol tables. The symbol will then be found
4504 during the scan of symtabs later.
4506 For functions, find_pc_symtab should succeed if we have debug info for
4507 the function, for variables we have to call
4508 lookup_symbol_in_objfile_from_linkage_name to determine if the
4509 variable has debug info. If the lookup fails, set found_msymbol so
4510 that we will rescan to print any matching symbols without debug info.
4511 We only search the objfile the msymbol came from, we no longer search
4512 all objfiles. In large programs (1000s of shared libs) searching all
4513 objfiles is not worth the pain. */
4514 if (filenames
.empty ()
4515 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4517 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4521 if (msymbol
->created_by_gdb
)
4524 if (is_suitable_msymbol (kind
, msymbol
))
4526 if (!preg
.has_value ()
4527 || preg
->exec (msymbol
->natural_name (), 0,
4530 /* An important side-effect of these lookup functions is
4531 to expand the symbol table if msymbol is found, later
4532 in the process we will add matching symbols or
4533 msymbols to the results list, and that requires that
4534 the symbols tables are expanded. */
4535 if (kind
== FUNCTIONS_DOMAIN
4536 ? (find_pc_compunit_symtab
4537 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4539 : (lookup_symbol_in_objfile_from_linkage_name
4540 (objfile
, msymbol
->linkage_name (),
4543 found_msymbol
= true;
4549 return found_msymbol
;
4555 global_symbol_searcher::add_matching_symbols
4557 const gdb::optional
<compiled_regex
> &preg
,
4558 const gdb::optional
<compiled_regex
> &treg
,
4559 std::set
<symbol_search
> *result_set
) const
4561 enum search_domain kind
= m_kind
;
4563 /* Add matching symbols (if not already present). */
4564 for (compunit_symtab
*cust
: objfile
->compunits ())
4566 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
4568 for (block_enum block
: { GLOBAL_BLOCK
, STATIC_BLOCK
})
4570 struct block_iterator iter
;
4572 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, block
);
4574 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4576 struct symtab
*real_symtab
= symbol_symtab (sym
);
4580 /* Check first sole REAL_SYMTAB->FILENAME. It does
4581 not need to be a substring of symtab_to_fullname as
4582 it may contain "./" etc. */
4583 if ((file_matches (real_symtab
->filename
, filenames
, false)
4584 || ((basenames_may_differ
4585 || file_matches (lbasename (real_symtab
->filename
),
4587 && file_matches (symtab_to_fullname (real_symtab
),
4589 && ((!preg
.has_value ()
4590 || preg
->exec (sym
->natural_name (), 0,
4592 && ((kind
== VARIABLES_DOMAIN
4593 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4594 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4595 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4596 /* LOC_CONST can be used for more than
4597 just enums, e.g., c++ static const
4598 members. We only want to skip enums
4600 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4601 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4603 && (!treg
.has_value ()
4604 || treg_matches_sym_type_name (*treg
, sym
)))
4605 || (kind
== FUNCTIONS_DOMAIN
4606 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4607 && (!treg
.has_value ()
4608 || treg_matches_sym_type_name (*treg
,
4610 || (kind
== TYPES_DOMAIN
4611 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4612 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4613 || (kind
== MODULES_DOMAIN
4614 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4615 && SYMBOL_LINE (sym
) != 0))))
4617 if (result_set
->size () < m_max_search_results
)
4619 /* Match, insert if not already in the results. */
4620 symbol_search
ss (block
, sym
);
4621 if (result_set
->find (ss
) == result_set
->end ())
4622 result_set
->insert (ss
);
4637 global_symbol_searcher::add_matching_msymbols
4638 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
,
4639 std::vector
<symbol_search
> *results
) const
4641 enum search_domain kind
= m_kind
;
4643 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4647 if (msymbol
->created_by_gdb
)
4650 if (is_suitable_msymbol (kind
, msymbol
))
4652 if (!preg
.has_value ()
4653 || preg
->exec (msymbol
->natural_name (), 0,
4656 /* For functions we can do a quick check of whether the
4657 symbol might be found via find_pc_symtab. */
4658 if (kind
!= FUNCTIONS_DOMAIN
4659 || (find_pc_compunit_symtab
4660 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4663 if (lookup_symbol_in_objfile_from_linkage_name
4664 (objfile
, msymbol
->linkage_name (),
4665 VAR_DOMAIN
).symbol
== NULL
)
4667 /* Matching msymbol, add it to the results list. */
4668 if (results
->size () < m_max_search_results
)
4669 results
->emplace_back (GLOBAL_BLOCK
, msymbol
, objfile
);
4683 std::vector
<symbol_search
>
4684 global_symbol_searcher::search () const
4686 gdb::optional
<compiled_regex
> preg
;
4687 gdb::optional
<compiled_regex
> treg
;
4689 gdb_assert (m_kind
!= ALL_DOMAIN
);
4691 if (m_symbol_name_regexp
!= NULL
)
4693 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4695 /* Make sure spacing is right for C++ operators.
4696 This is just a courtesy to make the matching less sensitive
4697 to how many spaces the user leaves between 'operator'
4698 and <TYPENAME> or <OPERATOR>. */
4700 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4704 int fix
= -1; /* -1 means ok; otherwise number of
4707 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4709 /* There should 1 space between 'operator' and 'TYPENAME'. */
4710 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4715 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4716 if (opname
[-1] == ' ')
4719 /* If wrong number of spaces, fix it. */
4722 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4724 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4725 symbol_name_regexp
= tmp
;
4729 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4731 preg
.emplace (symbol_name_regexp
, cflags
,
4732 _("Invalid regexp"));
4735 if (m_symbol_type_regexp
!= NULL
)
4737 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4739 treg
.emplace (m_symbol_type_regexp
, cflags
,
4740 _("Invalid regexp"));
4743 bool found_msymbol
= false;
4744 std::set
<symbol_search
> result_set
;
4745 for (objfile
*objfile
: current_program_space
->objfiles ())
4747 /* Expand symtabs within objfile that possibly contain matching
4749 found_msymbol
|= expand_symtabs (objfile
, preg
);
4751 /* Find matching symbols within OBJFILE and add them in to the
4752 RESULT_SET set. Use a set here so that we can easily detect
4753 duplicates as we go, and can therefore track how many unique
4754 matches we have found so far. */
4755 if (!add_matching_symbols (objfile
, preg
, treg
, &result_set
))
4759 /* Convert the result set into a sorted result list, as std::set is
4760 defined to be sorted then no explicit call to std::sort is needed. */
4761 std::vector
<symbol_search
> result (result_set
.begin (), result_set
.end ());
4763 /* If there are no debug symbols, then add matching minsyms. But if the
4764 user wants to see symbols matching a type regexp, then never give a
4765 minimal symbol, as we assume that a minimal symbol does not have a
4767 if ((found_msymbol
|| (filenames
.empty () && m_kind
== VARIABLES_DOMAIN
))
4768 && !m_exclude_minsyms
4769 && !treg
.has_value ())
4771 gdb_assert (m_kind
== VARIABLES_DOMAIN
|| m_kind
== FUNCTIONS_DOMAIN
);
4772 for (objfile
*objfile
: current_program_space
->objfiles ())
4773 if (!add_matching_msymbols (objfile
, preg
, &result
))
4783 symbol_to_info_string (struct symbol
*sym
, int block
,
4784 enum search_domain kind
)
4788 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4790 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4793 /* Typedef that is not a C++ class. */
4794 if (kind
== TYPES_DOMAIN
4795 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4797 string_file tmp_stream
;
4799 /* FIXME: For C (and C++) we end up with a difference in output here
4800 between how a typedef is printed, and non-typedefs are printed.
4801 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4802 appear C-like, while TYPE_PRINT doesn't.
4804 For the struct printing case below, things are worse, we force
4805 printing of the ";" in this function, which is going to be wrong
4806 for languages that don't require a ";" between statements. */
4807 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4808 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4810 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4811 str
+= tmp_stream
.string ();
4813 /* variable, func, or typedef-that-is-c++-class. */
4814 else if (kind
< TYPES_DOMAIN
4815 || (kind
== TYPES_DOMAIN
4816 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4818 string_file tmp_stream
;
4820 type_print (SYMBOL_TYPE (sym
),
4821 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4822 ? "" : sym
->print_name ()),
4825 str
+= tmp_stream
.string ();
4828 /* Printing of modules is currently done here, maybe at some future
4829 point we might want a language specific method to print the module
4830 symbol so that we can customise the output more. */
4831 else if (kind
== MODULES_DOMAIN
)
4832 str
+= sym
->print_name ();
4837 /* Helper function for symbol info commands, for example 'info functions',
4838 'info variables', etc. KIND is the kind of symbol we searched for, and
4839 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4840 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4841 print file and line number information for the symbol as well. Skip
4842 printing the filename if it matches LAST. */
4845 print_symbol_info (enum search_domain kind
,
4847 int block
, const char *last
)
4849 scoped_switch_to_sym_language_if_auto
l (sym
);
4850 struct symtab
*s
= symbol_symtab (sym
);
4854 const char *s_filename
= symtab_to_filename_for_display (s
);
4856 if (filename_cmp (last
, s_filename
) != 0)
4858 printf_filtered (_("\nFile %ps:\n"),
4859 styled_string (file_name_style
.style (),
4863 if (SYMBOL_LINE (sym
) != 0)
4864 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4866 puts_filtered ("\t");
4869 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4870 printf_filtered ("%s\n", str
.c_str ());
4873 /* This help function for symtab_symbol_info() prints information
4874 for non-debugging symbols to gdb_stdout. */
4877 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4879 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
4882 if (gdbarch_addr_bit (gdbarch
) <= 32)
4883 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4884 & (CORE_ADDR
) 0xffffffff,
4887 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4890 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4891 ? function_name_style
.style ()
4892 : ui_file_style ());
4894 printf_filtered (_("%ps %ps\n"),
4895 styled_string (address_style
.style (), tmp
),
4896 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4899 /* This is the guts of the commands "info functions", "info types", and
4900 "info variables". It calls search_symbols to find all matches and then
4901 print_[m]symbol_info to print out some useful information about the
4905 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4906 const char *regexp
, enum search_domain kind
,
4907 const char *t_regexp
, int from_tty
)
4909 static const char * const classnames
[] =
4910 {"variable", "function", "type", "module"};
4911 const char *last_filename
= "";
4914 gdb_assert (kind
!= ALL_DOMAIN
);
4916 if (regexp
!= nullptr && *regexp
== '\0')
4919 global_symbol_searcher
spec (kind
, regexp
);
4920 spec
.set_symbol_type_regexp (t_regexp
);
4921 spec
.set_exclude_minsyms (exclude_minsyms
);
4922 std::vector
<symbol_search
> symbols
= spec
.search ();
4928 if (t_regexp
!= NULL
)
4930 (_("All %ss matching regular expression \"%s\""
4931 " with type matching regular expression \"%s\":\n"),
4932 classnames
[kind
], regexp
, t_regexp
);
4934 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4935 classnames
[kind
], regexp
);
4939 if (t_regexp
!= NULL
)
4941 (_("All defined %ss"
4942 " with type matching regular expression \"%s\" :\n"),
4943 classnames
[kind
], t_regexp
);
4945 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4949 for (const symbol_search
&p
: symbols
)
4953 if (p
.msymbol
.minsym
!= NULL
)
4958 printf_filtered (_("\nNon-debugging symbols:\n"));
4961 print_msymbol_info (p
.msymbol
);
4965 print_symbol_info (kind
,
4970 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
4975 /* Structure to hold the values of the options used by the 'info variables'
4976 and 'info functions' commands. These correspond to the -q, -t, and -n
4979 struct info_vars_funcs_options
4982 bool exclude_minsyms
= false;
4983 char *type_regexp
= nullptr;
4985 ~info_vars_funcs_options ()
4987 xfree (type_regexp
);
4991 /* The options used by the 'info variables' and 'info functions'
4994 static const gdb::option::option_def info_vars_funcs_options_defs
[] = {
4995 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
4997 [] (info_vars_funcs_options
*opt
) { return &opt
->quiet
; },
4998 nullptr, /* show_cmd_cb */
4999 nullptr /* set_doc */
5002 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5004 [] (info_vars_funcs_options
*opt
) { return &opt
->exclude_minsyms
; },
5005 nullptr, /* show_cmd_cb */
5006 nullptr /* set_doc */
5009 gdb::option::string_option_def
<info_vars_funcs_options
> {
5011 [] (info_vars_funcs_options
*opt
) { return &opt
->type_regexp
;
5013 nullptr, /* show_cmd_cb */
5014 nullptr /* set_doc */
5018 /* Returns the option group used by 'info variables' and 'info
5021 static gdb::option::option_def_group
5022 make_info_vars_funcs_options_def_group (info_vars_funcs_options
*opts
)
5024 return {{info_vars_funcs_options_defs
}, opts
};
5027 /* Command completer for 'info variables' and 'info functions'. */
5030 info_vars_funcs_command_completer (struct cmd_list_element
*ignore
,
5031 completion_tracker
&tracker
,
5032 const char *text
, const char * /* word */)
5035 = make_info_vars_funcs_options_def_group (nullptr);
5036 if (gdb::option::complete_options
5037 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5040 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5041 symbol_completer (ignore
, tracker
, text
, word
);
5044 /* Implement the 'info variables' command. */
5047 info_variables_command (const char *args
, int from_tty
)
5049 info_vars_funcs_options opts
;
5050 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5051 gdb::option::process_options
5052 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5053 if (args
!= nullptr && *args
== '\0')
5056 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
5057 opts
.type_regexp
, from_tty
);
5060 /* Implement the 'info functions' command. */
5063 info_functions_command (const char *args
, int from_tty
)
5065 info_vars_funcs_options opts
;
5067 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5068 gdb::option::process_options
5069 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5070 if (args
!= nullptr && *args
== '\0')
5073 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5074 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5077 /* Holds the -q option for the 'info types' command. */
5079 struct info_types_options
5084 /* The options used by the 'info types' command. */
5086 static const gdb::option::option_def info_types_options_defs
[] = {
5087 gdb::option::boolean_option_def
<info_types_options
> {
5089 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5090 nullptr, /* show_cmd_cb */
5091 nullptr /* set_doc */
5095 /* Returns the option group used by 'info types'. */
5097 static gdb::option::option_def_group
5098 make_info_types_options_def_group (info_types_options
*opts
)
5100 return {{info_types_options_defs
}, opts
};
5103 /* Implement the 'info types' command. */
5106 info_types_command (const char *args
, int from_tty
)
5108 info_types_options opts
;
5110 auto grp
= make_info_types_options_def_group (&opts
);
5111 gdb::option::process_options
5112 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5113 if (args
!= nullptr && *args
== '\0')
5115 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5118 /* Command completer for 'info types' command. */
5121 info_types_command_completer (struct cmd_list_element
*ignore
,
5122 completion_tracker
&tracker
,
5123 const char *text
, const char * /* word */)
5126 = make_info_types_options_def_group (nullptr);
5127 if (gdb::option::complete_options
5128 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5131 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5132 symbol_completer (ignore
, tracker
, text
, word
);
5135 /* Implement the 'info modules' command. */
5138 info_modules_command (const char *args
, int from_tty
)
5140 info_types_options opts
;
5142 auto grp
= make_info_types_options_def_group (&opts
);
5143 gdb::option::process_options
5144 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5145 if (args
!= nullptr && *args
== '\0')
5147 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5152 rbreak_command (const char *regexp
, int from_tty
)
5155 const char *file_name
= nullptr;
5157 if (regexp
!= nullptr)
5159 const char *colon
= strchr (regexp
, ':');
5161 if (colon
&& *(colon
+ 1) != ':')
5166 colon_index
= colon
- regexp
;
5167 local_name
= (char *) alloca (colon_index
+ 1);
5168 memcpy (local_name
, regexp
, colon_index
);
5169 local_name
[colon_index
--] = 0;
5170 while (isspace (local_name
[colon_index
]))
5171 local_name
[colon_index
--] = 0;
5172 file_name
= local_name
;
5173 regexp
= skip_spaces (colon
+ 1);
5177 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5178 if (file_name
!= nullptr)
5179 spec
.filenames
.push_back (file_name
);
5180 std::vector
<symbol_search
> symbols
= spec
.search ();
5182 scoped_rbreak_breakpoints finalize
;
5183 for (const symbol_search
&p
: symbols
)
5185 if (p
.msymbol
.minsym
== NULL
)
5187 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5188 const char *fullname
= symtab_to_fullname (symtab
);
5190 string
= string_printf ("%s:'%s'", fullname
,
5191 p
.symbol
->linkage_name ());
5192 break_command (&string
[0], from_tty
);
5193 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5197 string
= string_printf ("'%s'",
5198 p
.msymbol
.minsym
->linkage_name ());
5200 break_command (&string
[0], from_tty
);
5201 printf_filtered ("<function, no debug info> %s;\n",
5202 p
.msymbol
.minsym
->print_name ());
5208 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5211 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5212 const lookup_name_info
&lookup_name
,
5213 completion_match_result
&match_res
)
5215 const language_defn
*lang
= language_def (symbol_language
);
5217 symbol_name_matcher_ftype
*name_match
5218 = get_symbol_name_matcher (lang
, lookup_name
);
5220 return name_match (symbol_name
, lookup_name
, &match_res
);
5226 completion_list_add_name (completion_tracker
&tracker
,
5227 language symbol_language
,
5228 const char *symname
,
5229 const lookup_name_info
&lookup_name
,
5230 const char *text
, const char *word
)
5232 completion_match_result
&match_res
5233 = tracker
.reset_completion_match_result ();
5235 /* Clip symbols that cannot match. */
5236 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5239 /* Refresh SYMNAME from the match string. It's potentially
5240 different depending on language. (E.g., on Ada, the match may be
5241 the encoded symbol name wrapped in "<>"). */
5242 symname
= match_res
.match
.match ();
5243 gdb_assert (symname
!= NULL
);
5245 /* We have a match for a completion, so add SYMNAME to the current list
5246 of matches. Note that the name is moved to freshly malloc'd space. */
5249 gdb::unique_xmalloc_ptr
<char> completion
5250 = make_completion_match_str (symname
, text
, word
);
5252 /* Here we pass the match-for-lcd object to add_completion. Some
5253 languages match the user text against substrings of symbol
5254 names in some cases. E.g., in C++, "b push_ba" completes to
5255 "std::vector::push_back", "std::string::push_back", etc., and
5256 in this case we want the completion lowest common denominator
5257 to be "push_back" instead of "std::". */
5258 tracker
.add_completion (std::move (completion
),
5259 &match_res
.match_for_lcd
, text
, word
);
5263 /* completion_list_add_name wrapper for struct symbol. */
5266 completion_list_add_symbol (completion_tracker
&tracker
,
5268 const lookup_name_info
&lookup_name
,
5269 const char *text
, const char *word
)
5271 completion_list_add_name (tracker
, sym
->language (),
5272 sym
->natural_name (),
5273 lookup_name
, text
, word
);
5276 /* completion_list_add_name wrapper for struct minimal_symbol. */
5279 completion_list_add_msymbol (completion_tracker
&tracker
,
5280 minimal_symbol
*sym
,
5281 const lookup_name_info
&lookup_name
,
5282 const char *text
, const char *word
)
5284 completion_list_add_name (tracker
, sym
->language (),
5285 sym
->natural_name (),
5286 lookup_name
, text
, word
);
5290 /* ObjC: In case we are completing on a selector, look as the msymbol
5291 again and feed all the selectors into the mill. */
5294 completion_list_objc_symbol (completion_tracker
&tracker
,
5295 struct minimal_symbol
*msymbol
,
5296 const lookup_name_info
&lookup_name
,
5297 const char *text
, const char *word
)
5299 static char *tmp
= NULL
;
5300 static unsigned int tmplen
= 0;
5302 const char *method
, *category
, *selector
;
5305 method
= msymbol
->natural_name ();
5307 /* Is it a method? */
5308 if ((method
[0] != '-') && (method
[0] != '+'))
5312 /* Complete on shortened method method. */
5313 completion_list_add_name (tracker
, language_objc
,
5318 while ((strlen (method
) + 1) >= tmplen
)
5324 tmp
= (char *) xrealloc (tmp
, tmplen
);
5326 selector
= strchr (method
, ' ');
5327 if (selector
!= NULL
)
5330 category
= strchr (method
, '(');
5332 if ((category
!= NULL
) && (selector
!= NULL
))
5334 memcpy (tmp
, method
, (category
- method
));
5335 tmp
[category
- method
] = ' ';
5336 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5337 completion_list_add_name (tracker
, language_objc
, tmp
,
5338 lookup_name
, text
, word
);
5340 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5341 lookup_name
, text
, word
);
5344 if (selector
!= NULL
)
5346 /* Complete on selector only. */
5347 strcpy (tmp
, selector
);
5348 tmp2
= strchr (tmp
, ']');
5352 completion_list_add_name (tracker
, language_objc
, tmp
,
5353 lookup_name
, text
, word
);
5357 /* Break the non-quoted text based on the characters which are in
5358 symbols. FIXME: This should probably be language-specific. */
5361 language_search_unquoted_string (const char *text
, const char *p
)
5363 for (; p
> text
; --p
)
5365 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5369 if ((current_language
->la_language
== language_objc
))
5371 if (p
[-1] == ':') /* Might be part of a method name. */
5373 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5374 p
-= 2; /* Beginning of a method name. */
5375 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5376 { /* Might be part of a method name. */
5379 /* Seeing a ' ' or a '(' is not conclusive evidence
5380 that we are in the middle of a method name. However,
5381 finding "-[" or "+[" should be pretty un-ambiguous.
5382 Unfortunately we have to find it now to decide. */
5385 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5386 t
[-1] == ' ' || t
[-1] == ':' ||
5387 t
[-1] == '(' || t
[-1] == ')')
5392 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5393 p
= t
- 2; /* Method name detected. */
5394 /* Else we leave with p unchanged. */
5404 completion_list_add_fields (completion_tracker
&tracker
,
5406 const lookup_name_info
&lookup_name
,
5407 const char *text
, const char *word
)
5409 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5411 struct type
*t
= SYMBOL_TYPE (sym
);
5412 enum type_code c
= TYPE_CODE (t
);
5415 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5416 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5417 if (TYPE_FIELD_NAME (t
, j
))
5418 completion_list_add_name (tracker
, sym
->language (),
5419 TYPE_FIELD_NAME (t
, j
),
5420 lookup_name
, text
, word
);
5427 symbol_is_function_or_method (symbol
*sym
)
5429 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5431 case TYPE_CODE_FUNC
:
5432 case TYPE_CODE_METHOD
:
5442 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5444 switch (MSYMBOL_TYPE (msymbol
))
5447 case mst_text_gnu_ifunc
:
5448 case mst_solib_trampoline
:
5458 bound_minimal_symbol
5459 find_gnu_ifunc (const symbol
*sym
)
5461 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5464 lookup_name_info
lookup_name (sym
->search_name (),
5465 symbol_name_match_type::SEARCH_NAME
);
5466 struct objfile
*objfile
= symbol_objfile (sym
);
5468 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5469 minimal_symbol
*ifunc
= NULL
;
5471 iterate_over_minimal_symbols (objfile
, lookup_name
,
5472 [&] (minimal_symbol
*minsym
)
5474 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5475 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5477 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5478 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5480 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
5482 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5484 current_top_target ());
5486 if (msym_addr
== address
)
5496 return {ifunc
, objfile
};
5500 /* Add matching symbols from SYMTAB to the current completion list. */
5503 add_symtab_completions (struct compunit_symtab
*cust
,
5504 completion_tracker
&tracker
,
5505 complete_symbol_mode mode
,
5506 const lookup_name_info
&lookup_name
,
5507 const char *text
, const char *word
,
5508 enum type_code code
)
5511 const struct block
*b
;
5512 struct block_iterator iter
;
5518 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5521 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5522 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5524 if (completion_skip_symbol (mode
, sym
))
5527 if (code
== TYPE_CODE_UNDEF
5528 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5529 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5530 completion_list_add_symbol (tracker
, sym
,
5538 default_collect_symbol_completion_matches_break_on
5539 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5540 symbol_name_match_type name_match_type
,
5541 const char *text
, const char *word
,
5542 const char *break_on
, enum type_code code
)
5544 /* Problem: All of the symbols have to be copied because readline
5545 frees them. I'm not going to worry about this; hopefully there
5546 won't be that many. */
5549 const struct block
*b
;
5550 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5551 struct block_iterator iter
;
5552 /* The symbol we are completing on. Points in same buffer as text. */
5553 const char *sym_text
;
5555 /* Now look for the symbol we are supposed to complete on. */
5556 if (mode
== complete_symbol_mode::LINESPEC
)
5562 const char *quote_pos
= NULL
;
5564 /* First see if this is a quoted string. */
5566 for (p
= text
; *p
!= '\0'; ++p
)
5568 if (quote_found
!= '\0')
5570 if (*p
== quote_found
)
5571 /* Found close quote. */
5573 else if (*p
== '\\' && p
[1] == quote_found
)
5574 /* A backslash followed by the quote character
5575 doesn't end the string. */
5578 else if (*p
== '\'' || *p
== '"')
5584 if (quote_found
== '\'')
5585 /* A string within single quotes can be a symbol, so complete on it. */
5586 sym_text
= quote_pos
+ 1;
5587 else if (quote_found
== '"')
5588 /* A double-quoted string is never a symbol, nor does it make sense
5589 to complete it any other way. */
5595 /* It is not a quoted string. Break it based on the characters
5596 which are in symbols. */
5599 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5600 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5609 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5611 /* At this point scan through the misc symbol vectors and add each
5612 symbol you find to the list. Eventually we want to ignore
5613 anything that isn't a text symbol (everything else will be
5614 handled by the psymtab code below). */
5616 if (code
== TYPE_CODE_UNDEF
)
5618 for (objfile
*objfile
: current_program_space
->objfiles ())
5620 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5624 if (completion_skip_symbol (mode
, msymbol
))
5627 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5630 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5636 /* Add completions for all currently loaded symbol tables. */
5637 for (objfile
*objfile
: current_program_space
->objfiles ())
5639 for (compunit_symtab
*cust
: objfile
->compunits ())
5640 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5641 sym_text
, word
, code
);
5644 /* Look through the partial symtabs for all symbols which begin by
5645 matching SYM_TEXT. Expand all CUs that you find to the list. */
5646 expand_symtabs_matching (NULL
,
5649 [&] (compunit_symtab
*symtab
) /* expansion notify */
5651 add_symtab_completions (symtab
,
5652 tracker
, mode
, lookup_name
,
5653 sym_text
, word
, code
);
5657 /* Search upwards from currently selected frame (so that we can
5658 complete on local vars). Also catch fields of types defined in
5659 this places which match our text string. Only complete on types
5660 visible from current context. */
5662 b
= get_selected_block (0);
5663 surrounding_static_block
= block_static_block (b
);
5664 surrounding_global_block
= block_global_block (b
);
5665 if (surrounding_static_block
!= NULL
)
5666 while (b
!= surrounding_static_block
)
5670 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5672 if (code
== TYPE_CODE_UNDEF
)
5674 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5676 completion_list_add_fields (tracker
, sym
, lookup_name
,
5679 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5680 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5681 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5685 /* Stop when we encounter an enclosing function. Do not stop for
5686 non-inlined functions - the locals of the enclosing function
5687 are in scope for a nested function. */
5688 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5690 b
= BLOCK_SUPERBLOCK (b
);
5693 /* Add fields from the file's types; symbols will be added below. */
5695 if (code
== TYPE_CODE_UNDEF
)
5697 if (surrounding_static_block
!= NULL
)
5698 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5699 completion_list_add_fields (tracker
, sym
, lookup_name
,
5702 if (surrounding_global_block
!= NULL
)
5703 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5704 completion_list_add_fields (tracker
, sym
, lookup_name
,
5708 /* Skip macros if we are completing a struct tag -- arguable but
5709 usually what is expected. */
5710 if (current_language
->la_macro_expansion
== macro_expansion_c
5711 && code
== TYPE_CODE_UNDEF
)
5713 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5715 /* This adds a macro's name to the current completion list. */
5716 auto add_macro_name
= [&] (const char *macro_name
,
5717 const macro_definition
*,
5718 macro_source_file
*,
5721 completion_list_add_name (tracker
, language_c
, macro_name
,
5722 lookup_name
, sym_text
, word
);
5725 /* Add any macros visible in the default scope. Note that this
5726 may yield the occasional wrong result, because an expression
5727 might be evaluated in a scope other than the default. For
5728 example, if the user types "break file:line if <TAB>", the
5729 resulting expression will be evaluated at "file:line" -- but
5730 at there does not seem to be a way to detect this at
5732 scope
= default_macro_scope ();
5734 macro_for_each_in_scope (scope
->file
, scope
->line
,
5737 /* User-defined macros are always visible. */
5738 macro_for_each (macro_user_macros
, add_macro_name
);
5743 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5744 complete_symbol_mode mode
,
5745 symbol_name_match_type name_match_type
,
5746 const char *text
, const char *word
,
5747 enum type_code code
)
5749 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5755 /* Collect all symbols (regardless of class) which begin by matching
5759 collect_symbol_completion_matches (completion_tracker
&tracker
,
5760 complete_symbol_mode mode
,
5761 symbol_name_match_type name_match_type
,
5762 const char *text
, const char *word
)
5764 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5770 /* Like collect_symbol_completion_matches, but only collect
5771 STRUCT_DOMAIN symbols whose type code is CODE. */
5774 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5775 const char *text
, const char *word
,
5776 enum type_code code
)
5778 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5779 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5781 gdb_assert (code
== TYPE_CODE_UNION
5782 || code
== TYPE_CODE_STRUCT
5783 || code
== TYPE_CODE_ENUM
);
5784 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5789 /* Like collect_symbol_completion_matches, but collects a list of
5790 symbols defined in all source files named SRCFILE. */
5793 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5794 complete_symbol_mode mode
,
5795 symbol_name_match_type name_match_type
,
5796 const char *text
, const char *word
,
5797 const char *srcfile
)
5799 /* The symbol we are completing on. Points in same buffer as text. */
5800 const char *sym_text
;
5802 /* Now look for the symbol we are supposed to complete on.
5803 FIXME: This should be language-specific. */
5804 if (mode
== complete_symbol_mode::LINESPEC
)
5810 const char *quote_pos
= NULL
;
5812 /* First see if this is a quoted string. */
5814 for (p
= text
; *p
!= '\0'; ++p
)
5816 if (quote_found
!= '\0')
5818 if (*p
== quote_found
)
5819 /* Found close quote. */
5821 else if (*p
== '\\' && p
[1] == quote_found
)
5822 /* A backslash followed by the quote character
5823 doesn't end the string. */
5826 else if (*p
== '\'' || *p
== '"')
5832 if (quote_found
== '\'')
5833 /* A string within single quotes can be a symbol, so complete on it. */
5834 sym_text
= quote_pos
+ 1;
5835 else if (quote_found
== '"')
5836 /* A double-quoted string is never a symbol, nor does it make sense
5837 to complete it any other way. */
5843 /* Not a quoted string. */
5844 sym_text
= language_search_unquoted_string (text
, p
);
5848 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5850 /* Go through symtabs for SRCFILE and check the externs and statics
5851 for symbols which match. */
5852 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5854 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5855 tracker
, mode
, lookup_name
,
5856 sym_text
, word
, TYPE_CODE_UNDEF
);
5861 /* A helper function for make_source_files_completion_list. It adds
5862 another file name to a list of possible completions, growing the
5863 list as necessary. */
5866 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5867 completion_list
*list
)
5869 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5873 not_interesting_fname (const char *fname
)
5875 static const char *illegal_aliens
[] = {
5876 "_globals_", /* inserted by coff_symtab_read */
5881 for (i
= 0; illegal_aliens
[i
]; i
++)
5883 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5889 /* An object of this type is passed as the user_data argument to
5890 map_partial_symbol_filenames. */
5891 struct add_partial_filename_data
5893 struct filename_seen_cache
*filename_seen_cache
;
5897 completion_list
*list
;
5900 /* A callback for map_partial_symbol_filenames. */
5903 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5906 struct add_partial_filename_data
*data
5907 = (struct add_partial_filename_data
*) user_data
;
5909 if (not_interesting_fname (filename
))
5911 if (!data
->filename_seen_cache
->seen (filename
)
5912 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5914 /* This file matches for a completion; add it to the
5915 current list of matches. */
5916 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5920 const char *base_name
= lbasename (filename
);
5922 if (base_name
!= filename
5923 && !data
->filename_seen_cache
->seen (base_name
)
5924 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5925 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5929 /* Return a list of all source files whose names begin with matching
5930 TEXT. The file names are looked up in the symbol tables of this
5934 make_source_files_completion_list (const char *text
, const char *word
)
5936 size_t text_len
= strlen (text
);
5937 completion_list list
;
5938 const char *base_name
;
5939 struct add_partial_filename_data datum
;
5941 if (!have_full_symbols () && !have_partial_symbols ())
5944 filename_seen_cache filenames_seen
;
5946 for (objfile
*objfile
: current_program_space
->objfiles ())
5948 for (compunit_symtab
*cu
: objfile
->compunits ())
5950 for (symtab
*s
: compunit_filetabs (cu
))
5952 if (not_interesting_fname (s
->filename
))
5954 if (!filenames_seen
.seen (s
->filename
)
5955 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
5957 /* This file matches for a completion; add it to the current
5959 add_filename_to_list (s
->filename
, text
, word
, &list
);
5963 /* NOTE: We allow the user to type a base name when the
5964 debug info records leading directories, but not the other
5965 way around. This is what subroutines of breakpoint
5966 command do when they parse file names. */
5967 base_name
= lbasename (s
->filename
);
5968 if (base_name
!= s
->filename
5969 && !filenames_seen
.seen (base_name
)
5970 && filename_ncmp (base_name
, text
, text_len
) == 0)
5971 add_filename_to_list (base_name
, text
, word
, &list
);
5977 datum
.filename_seen_cache
= &filenames_seen
;
5980 datum
.text_len
= text_len
;
5982 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
5983 0 /*need_fullname*/);
5990 /* Return the "main_info" object for the current program space. If
5991 the object has not yet been created, create it and fill in some
5994 static struct main_info
*
5995 get_main_info (void)
5997 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
6001 /* It may seem strange to store the main name in the progspace
6002 and also in whatever objfile happens to see a main name in
6003 its debug info. The reason for this is mainly historical:
6004 gdb returned "main" as the name even if no function named
6005 "main" was defined the program; and this approach lets us
6006 keep compatibility. */
6007 info
= main_progspace_key
.emplace (current_program_space
);
6014 set_main_name (const char *name
, enum language lang
)
6016 struct main_info
*info
= get_main_info ();
6018 if (info
->name_of_main
!= NULL
)
6020 xfree (info
->name_of_main
);
6021 info
->name_of_main
= NULL
;
6022 info
->language_of_main
= language_unknown
;
6026 info
->name_of_main
= xstrdup (name
);
6027 info
->language_of_main
= lang
;
6031 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
6035 find_main_name (void)
6037 const char *new_main_name
;
6039 /* First check the objfiles to see whether a debuginfo reader has
6040 picked up the appropriate main name. Historically the main name
6041 was found in a more or less random way; this approach instead
6042 relies on the order of objfile creation -- which still isn't
6043 guaranteed to get the correct answer, but is just probably more
6045 for (objfile
*objfile
: current_program_space
->objfiles ())
6047 if (objfile
->per_bfd
->name_of_main
!= NULL
)
6049 set_main_name (objfile
->per_bfd
->name_of_main
,
6050 objfile
->per_bfd
->language_of_main
);
6055 /* Try to see if the main procedure is in Ada. */
6056 /* FIXME: brobecker/2005-03-07: Another way of doing this would
6057 be to add a new method in the language vector, and call this
6058 method for each language until one of them returns a non-empty
6059 name. This would allow us to remove this hard-coded call to
6060 an Ada function. It is not clear that this is a better approach
6061 at this point, because all methods need to be written in a way
6062 such that false positives never be returned. For instance, it is
6063 important that a method does not return a wrong name for the main
6064 procedure if the main procedure is actually written in a different
6065 language. It is easy to guaranty this with Ada, since we use a
6066 special symbol generated only when the main in Ada to find the name
6067 of the main procedure. It is difficult however to see how this can
6068 be guarantied for languages such as C, for instance. This suggests
6069 that order of call for these methods becomes important, which means
6070 a more complicated approach. */
6071 new_main_name
= ada_main_name ();
6072 if (new_main_name
!= NULL
)
6074 set_main_name (new_main_name
, language_ada
);
6078 new_main_name
= d_main_name ();
6079 if (new_main_name
!= NULL
)
6081 set_main_name (new_main_name
, language_d
);
6085 new_main_name
= go_main_name ();
6086 if (new_main_name
!= NULL
)
6088 set_main_name (new_main_name
, language_go
);
6092 new_main_name
= pascal_main_name ();
6093 if (new_main_name
!= NULL
)
6095 set_main_name (new_main_name
, language_pascal
);
6099 /* The languages above didn't identify the name of the main procedure.
6100 Fallback to "main". */
6101 set_main_name ("main", language_unknown
);
6109 struct main_info
*info
= get_main_info ();
6111 if (info
->name_of_main
== NULL
)
6114 return info
->name_of_main
;
6117 /* Return the language of the main function. If it is not known,
6118 return language_unknown. */
6121 main_language (void)
6123 struct main_info
*info
= get_main_info ();
6125 if (info
->name_of_main
== NULL
)
6128 return info
->language_of_main
;
6131 /* Handle ``executable_changed'' events for the symtab module. */
6134 symtab_observer_executable_changed (void)
6136 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6137 set_main_name (NULL
, language_unknown
);
6140 /* Return 1 if the supplied producer string matches the ARM RealView
6141 compiler (armcc). */
6144 producer_is_realview (const char *producer
)
6146 static const char *const arm_idents
[] = {
6147 "ARM C Compiler, ADS",
6148 "Thumb C Compiler, ADS",
6149 "ARM C++ Compiler, ADS",
6150 "Thumb C++ Compiler, ADS",
6151 "ARM/Thumb C/C++ Compiler, RVCT",
6152 "ARM C/C++ Compiler, RVCT"
6156 if (producer
== NULL
)
6159 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6160 if (startswith (producer
, arm_idents
[i
]))
6168 /* The next index to hand out in response to a registration request. */
6170 static int next_aclass_value
= LOC_FINAL_VALUE
;
6172 /* The maximum number of "aclass" registrations we support. This is
6173 constant for convenience. */
6174 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6176 /* The objects representing the various "aclass" values. The elements
6177 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6178 elements are those registered at gdb initialization time. */
6180 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6182 /* The globally visible pointer. This is separate from 'symbol_impl'
6183 so that it can be const. */
6185 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6187 /* Make sure we saved enough room in struct symbol. */
6189 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6191 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6192 is the ops vector associated with this index. This returns the new
6193 index, which should be used as the aclass_index field for symbols
6197 register_symbol_computed_impl (enum address_class aclass
,
6198 const struct symbol_computed_ops
*ops
)
6200 int result
= next_aclass_value
++;
6202 gdb_assert (aclass
== LOC_COMPUTED
);
6203 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6204 symbol_impl
[result
].aclass
= aclass
;
6205 symbol_impl
[result
].ops_computed
= ops
;
6207 /* Sanity check OPS. */
6208 gdb_assert (ops
!= NULL
);
6209 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6210 gdb_assert (ops
->describe_location
!= NULL
);
6211 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6212 gdb_assert (ops
->read_variable
!= NULL
);
6217 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6218 OPS is the ops vector associated with this index. This returns the
6219 new index, which should be used as the aclass_index field for symbols
6223 register_symbol_block_impl (enum address_class aclass
,
6224 const struct symbol_block_ops
*ops
)
6226 int result
= next_aclass_value
++;
6228 gdb_assert (aclass
== LOC_BLOCK
);
6229 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6230 symbol_impl
[result
].aclass
= aclass
;
6231 symbol_impl
[result
].ops_block
= ops
;
6233 /* Sanity check OPS. */
6234 gdb_assert (ops
!= NULL
);
6235 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6240 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6241 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6242 this index. This returns the new index, which should be used as
6243 the aclass_index field for symbols of this type. */
6246 register_symbol_register_impl (enum address_class aclass
,
6247 const struct symbol_register_ops
*ops
)
6249 int result
= next_aclass_value
++;
6251 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6252 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6253 symbol_impl
[result
].aclass
= aclass
;
6254 symbol_impl
[result
].ops_register
= ops
;
6259 /* Initialize elements of 'symbol_impl' for the constants in enum
6263 initialize_ordinary_address_classes (void)
6267 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6268 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6273 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6276 initialize_objfile_symbol (struct symbol
*sym
)
6278 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6279 SYMBOL_SECTION (sym
) = -1;
6282 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6286 allocate_symbol (struct objfile
*objfile
)
6288 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6290 initialize_objfile_symbol (result
);
6295 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6298 struct template_symbol
*
6299 allocate_template_symbol (struct objfile
*objfile
)
6301 struct template_symbol
*result
;
6303 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6304 initialize_objfile_symbol (result
);
6312 symbol_objfile (const struct symbol
*symbol
)
6314 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6315 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6321 symbol_arch (const struct symbol
*symbol
)
6323 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6324 return symbol
->owner
.arch
;
6325 return get_objfile_arch (SYMTAB_OBJFILE (symbol
->owner
.symtab
));
6331 symbol_symtab (const struct symbol
*symbol
)
6333 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6334 return symbol
->owner
.symtab
;
6340 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6342 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6343 symbol
->owner
.symtab
= symtab
;
6349 get_symbol_address (const struct symbol
*sym
)
6351 gdb_assert (sym
->maybe_copied
);
6352 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6354 const char *linkage_name
= sym
->linkage_name ();
6356 for (objfile
*objfile
: current_program_space
->objfiles ())
6358 bound_minimal_symbol minsym
6359 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6360 if (minsym
.minsym
!= nullptr)
6361 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6363 return sym
->value
.address
;
6369 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6371 gdb_assert (minsym
->maybe_copied
);
6372 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6374 const char *linkage_name
= minsym
->linkage_name ();
6376 for (objfile
*objfile
: current_program_space
->objfiles ())
6378 if ((objfile
->flags
& OBJF_MAINLINE
) != 0)
6380 bound_minimal_symbol found
6381 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6382 if (found
.minsym
!= nullptr)
6383 return BMSYMBOL_VALUE_ADDRESS (found
);
6386 return minsym
->value
.address
+ objf
->section_offsets
[minsym
->section
];
6391 /* Hold the sub-commands of 'info module'. */
6393 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6395 /* Implement the 'info module' command, just displays some help text for
6396 the available sub-commands. */
6399 info_module_command (const char *args
, int from_tty
)
6401 help_list (info_module_cmdlist
, "info module ", class_info
, gdb_stdout
);
6406 std::vector
<module_symbol_search
>
6407 search_module_symbols (const char *module_regexp
, const char *regexp
,
6408 const char *type_regexp
, search_domain kind
)
6410 std::vector
<module_symbol_search
> results
;
6412 /* Search for all modules matching MODULE_REGEXP. */
6413 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6414 spec1
.set_exclude_minsyms (true);
6415 std::vector
<symbol_search
> modules
= spec1
.search ();
6417 /* Now search for all symbols of the required KIND matching the required
6418 regular expressions. We figure out which ones are in which modules
6420 global_symbol_searcher
spec2 (kind
, regexp
);
6421 spec2
.set_symbol_type_regexp (type_regexp
);
6422 spec2
.set_exclude_minsyms (true);
6423 std::vector
<symbol_search
> symbols
= spec2
.search ();
6425 /* Now iterate over all MODULES, checking to see which items from
6426 SYMBOLS are in each module. */
6427 for (const symbol_search
&p
: modules
)
6431 /* This is a module. */
6432 gdb_assert (p
.symbol
!= nullptr);
6434 std::string prefix
= p
.symbol
->print_name ();
6437 for (const symbol_search
&q
: symbols
)
6439 if (q
.symbol
== nullptr)
6442 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6443 prefix
.size ()) != 0)
6446 results
.push_back ({p
, q
});
6453 /* Implement the core of both 'info module functions' and 'info module
6457 info_module_subcommand (bool quiet
, const char *module_regexp
,
6458 const char *regexp
, const char *type_regexp
,
6461 /* Print a header line. Don't build the header line bit by bit as this
6462 prevents internationalisation. */
6465 if (module_regexp
== nullptr)
6467 if (type_regexp
== nullptr)
6469 if (regexp
== nullptr)
6470 printf_filtered ((kind
== VARIABLES_DOMAIN
6471 ? _("All variables in all modules:")
6472 : _("All functions in all modules:")));
6475 ((kind
== VARIABLES_DOMAIN
6476 ? _("All variables matching regular expression"
6477 " \"%s\" in all modules:")
6478 : _("All functions matching regular expression"
6479 " \"%s\" in all modules:")),
6484 if (regexp
== nullptr)
6486 ((kind
== VARIABLES_DOMAIN
6487 ? _("All variables with type matching regular "
6488 "expression \"%s\" in all modules:")
6489 : _("All functions with type matching regular "
6490 "expression \"%s\" in all modules:")),
6494 ((kind
== VARIABLES_DOMAIN
6495 ? _("All variables matching regular expression "
6496 "\"%s\",\n\twith type matching regular "
6497 "expression \"%s\" in all modules:")
6498 : _("All functions matching regular expression "
6499 "\"%s\",\n\twith type matching regular "
6500 "expression \"%s\" in all modules:")),
6501 regexp
, type_regexp
);
6506 if (type_regexp
== nullptr)
6508 if (regexp
== nullptr)
6510 ((kind
== VARIABLES_DOMAIN
6511 ? _("All variables in all modules matching regular "
6512 "expression \"%s\":")
6513 : _("All functions in all modules matching regular "
6514 "expression \"%s\":")),
6518 ((kind
== VARIABLES_DOMAIN
6519 ? _("All variables matching regular expression "
6520 "\"%s\",\n\tin all modules matching regular "
6521 "expression \"%s\":")
6522 : _("All functions matching regular expression "
6523 "\"%s\",\n\tin all modules matching regular "
6524 "expression \"%s\":")),
6525 regexp
, module_regexp
);
6529 if (regexp
== nullptr)
6531 ((kind
== VARIABLES_DOMAIN
6532 ? _("All variables with type matching regular "
6533 "expression \"%s\"\n\tin all modules matching "
6534 "regular expression \"%s\":")
6535 : _("All functions with type matching regular "
6536 "expression \"%s\"\n\tin all modules matching "
6537 "regular expression \"%s\":")),
6538 type_regexp
, module_regexp
);
6541 ((kind
== VARIABLES_DOMAIN
6542 ? _("All variables matching regular expression "
6543 "\"%s\",\n\twith type matching regular expression "
6544 "\"%s\",\n\tin all modules matching regular "
6545 "expression \"%s\":")
6546 : _("All functions matching regular expression "
6547 "\"%s\",\n\twith type matching regular expression "
6548 "\"%s\",\n\tin all modules matching regular "
6549 "expression \"%s\":")),
6550 regexp
, type_regexp
, module_regexp
);
6553 printf_filtered ("\n");
6556 /* Find all symbols of type KIND matching the given regular expressions
6557 along with the symbols for the modules in which those symbols
6559 std::vector
<module_symbol_search
> module_symbols
6560 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6562 std::sort (module_symbols
.begin (), module_symbols
.end (),
6563 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6565 if (a
.first
< b
.first
)
6567 else if (a
.first
== b
.first
)
6568 return a
.second
< b
.second
;
6573 const char *last_filename
= "";
6574 const symbol
*last_module_symbol
= nullptr;
6575 for (const module_symbol_search
&ms
: module_symbols
)
6577 const symbol_search
&p
= ms
.first
;
6578 const symbol_search
&q
= ms
.second
;
6580 gdb_assert (q
.symbol
!= nullptr);
6582 if (last_module_symbol
!= p
.symbol
)
6584 printf_filtered ("\n");
6585 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6586 last_module_symbol
= p
.symbol
;
6590 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6593 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6597 /* Hold the option values for the 'info module .....' sub-commands. */
6599 struct info_modules_var_func_options
6602 char *type_regexp
= nullptr;
6603 char *module_regexp
= nullptr;
6605 ~info_modules_var_func_options ()
6607 xfree (type_regexp
);
6608 xfree (module_regexp
);
6612 /* The options used by 'info module variables' and 'info module functions'
6615 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6616 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6618 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6619 nullptr, /* show_cmd_cb */
6620 nullptr /* set_doc */
6623 gdb::option::string_option_def
<info_modules_var_func_options
> {
6625 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6626 nullptr, /* show_cmd_cb */
6627 nullptr /* set_doc */
6630 gdb::option::string_option_def
<info_modules_var_func_options
> {
6632 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6633 nullptr, /* show_cmd_cb */
6634 nullptr /* set_doc */
6638 /* Return the option group used by the 'info module ...' sub-commands. */
6640 static inline gdb::option::option_def_group
6641 make_info_modules_var_func_options_def_group
6642 (info_modules_var_func_options
*opts
)
6644 return {{info_modules_var_func_options_defs
}, opts
};
6647 /* Implements the 'info module functions' command. */
6650 info_module_functions_command (const char *args
, int from_tty
)
6652 info_modules_var_func_options opts
;
6653 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6654 gdb::option::process_options
6655 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6656 if (args
!= nullptr && *args
== '\0')
6659 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6660 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6663 /* Implements the 'info module variables' command. */
6666 info_module_variables_command (const char *args
, int from_tty
)
6668 info_modules_var_func_options opts
;
6669 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6670 gdb::option::process_options
6671 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6672 if (args
!= nullptr && *args
== '\0')
6675 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6676 opts
.type_regexp
, VARIABLES_DOMAIN
);
6679 /* Command completer for 'info module ...' sub-commands. */
6682 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6683 completion_tracker
&tracker
,
6685 const char * /* word */)
6688 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6689 if (gdb::option::complete_options
6690 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6693 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6694 symbol_completer (ignore
, tracker
, text
, word
);
6699 void _initialize_symtab ();
6701 _initialize_symtab ()
6703 cmd_list_element
*c
;
6705 initialize_ordinary_address_classes ();
6707 c
= add_info ("variables", info_variables_command
,
6708 info_print_args_help (_("\
6709 All global and static variable names or those matching REGEXPs.\n\
6710 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6711 Prints the global and static variables.\n"),
6712 _("global and static variables"),
6714 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6717 c
= add_com ("whereis", class_info
, info_variables_command
,
6718 info_print_args_help (_("\
6719 All global and static variable names, or those matching REGEXPs.\n\
6720 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6721 Prints the global and static variables.\n"),
6722 _("global and static variables"),
6724 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6727 c
= add_info ("functions", info_functions_command
,
6728 info_print_args_help (_("\
6729 All function names or those matching REGEXPs.\n\
6730 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6731 Prints the functions.\n"),
6734 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6736 c
= add_info ("types", info_types_command
, _("\
6737 All type names, or those matching REGEXP.\n\
6738 Usage: info types [-q] [REGEXP]\n\
6739 Print information about all types matching REGEXP, or all types if no\n\
6740 REGEXP is given. The optional flag -q disables printing of headers."));
6741 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6743 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6745 static std::string info_sources_help
6746 = gdb::option::build_help (_("\
6747 All source files in the program or those matching REGEXP.\n\
6748 Usage: info sources [OPTION]... [REGEXP]\n\
6749 By default, REGEXP is used to match anywhere in the filename.\n\
6755 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6756 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6758 c
= add_info ("modules", info_modules_command
,
6759 _("All module names, or those matching REGEXP."));
6760 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6762 add_prefix_cmd ("module", class_info
, info_module_command
, _("\
6763 Print information about modules."),
6764 &info_module_cmdlist
, "info module ",
6767 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6768 Display functions arranged by modules.\n\
6769 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6770 Print a summary of all functions within each Fortran module, grouped by\n\
6771 module and file. For each function the line on which the function is\n\
6772 defined is given along with the type signature and name of the function.\n\
6774 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6775 listed. If MODREGEXP is provided then only functions in modules matching\n\
6776 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6777 type signature matches TYPEREGEXP are listed.\n\
6779 The -q flag suppresses printing some header information."),
6780 &info_module_cmdlist
);
6781 set_cmd_completer_handle_brkchars
6782 (c
, info_module_var_func_command_completer
);
6784 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6785 Display variables arranged by modules.\n\
6786 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6787 Print a summary of all variables within each Fortran module, grouped by\n\
6788 module and file. For each variable the line on which the variable is\n\
6789 defined is given along with the type and name of the variable.\n\
6791 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6792 listed. If MODREGEXP is provided then only variables in modules matching\n\
6793 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6794 type matches TYPEREGEXP are listed.\n\
6796 The -q flag suppresses printing some header information."),
6797 &info_module_cmdlist
);
6798 set_cmd_completer_handle_brkchars
6799 (c
, info_module_var_func_command_completer
);
6801 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6802 _("Set a breakpoint for all functions matching REGEXP."));
6804 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6805 multiple_symbols_modes
, &multiple_symbols_mode
,
6807 Set how the debugger handles ambiguities in expressions."), _("\
6808 Show how the debugger handles ambiguities in expressions."), _("\
6809 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6810 NULL
, NULL
, &setlist
, &showlist
);
6812 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6813 &basenames_may_differ
, _("\
6814 Set whether a source file may have multiple base names."), _("\
6815 Show whether a source file may have multiple base names."), _("\
6816 (A \"base name\" is the name of a file with the directory part removed.\n\
6817 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6818 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6819 before comparing them. Canonicalization is an expensive operation,\n\
6820 but it allows the same file be known by more than one base name.\n\
6821 If not set (the default), all source files are assumed to have just\n\
6822 one base name, and gdb will do file name comparisons more efficiently."),
6824 &setlist
, &showlist
);
6826 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6827 _("Set debugging of symbol table creation."),
6828 _("Show debugging of symbol table creation."), _("\
6829 When enabled (non-zero), debugging messages are printed when building\n\
6830 symbol tables. A value of 1 (one) normally provides enough information.\n\
6831 A value greater than 1 provides more verbose information."),
6834 &setdebuglist
, &showdebuglist
);
6836 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6838 Set debugging of symbol lookup."), _("\
6839 Show debugging of symbol lookup."), _("\
6840 When enabled (non-zero), symbol lookups are logged."),
6842 &setdebuglist
, &showdebuglist
);
6844 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6845 &new_symbol_cache_size
,
6846 _("Set the size of the symbol cache."),
6847 _("Show the size of the symbol cache."), _("\
6848 The size of the symbol cache.\n\
6849 If zero then the symbol cache is disabled."),
6850 set_symbol_cache_size_handler
, NULL
,
6851 &maintenance_set_cmdlist
,
6852 &maintenance_show_cmdlist
);
6854 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6855 _("Dump the symbol cache for each program space."),
6856 &maintenanceprintlist
);
6858 add_cmd ("symbol-cache-statistics", class_maintenance
,
6859 maintenance_print_symbol_cache_statistics
,
6860 _("Print symbol cache statistics for each program space."),
6861 &maintenanceprintlist
);
6863 add_cmd ("flush-symbol-cache", class_maintenance
,
6864 maintenance_flush_symbol_cache
,
6865 _("Flush the symbol cache for each program space."),
6868 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6869 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6870 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);