1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2019 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 /* Symbols don't specify global vs static block.
187 So keep them in separate caches. */
189 struct block_symbol_cache
193 unsigned int collisions
;
195 /* SYMBOLS is a variable length array of this size.
196 One can imagine that in general one cache (global/static) should be a
197 fraction of the size of the other, but there's no data at the moment
198 on which to decide. */
201 struct symbol_cache_slot symbols
[1];
206 Searching for symbols in the static and global blocks over multiple objfiles
207 again and again can be slow, as can searching very big objfiles. This is a
208 simple cache to improve symbol lookup performance, which is critical to
209 overall gdb performance.
211 Symbols are hashed on the name, its domain, and block.
212 They are also hashed on their objfile for objfile-specific lookups. */
216 symbol_cache () = default;
220 xfree (global_symbols
);
221 xfree (static_symbols
);
224 struct block_symbol_cache
*global_symbols
= nullptr;
225 struct block_symbol_cache
*static_symbols
= nullptr;
228 /* Program space key for finding its symbol cache. */
230 static const program_space_key
<symbol_cache
> symbol_cache_key
;
232 /* When non-zero, print debugging messages related to symtab creation. */
233 unsigned int symtab_create_debug
= 0;
235 /* When non-zero, print debugging messages related to symbol lookup. */
236 unsigned int symbol_lookup_debug
= 0;
238 /* The size of the cache is staged here. */
239 static unsigned int new_symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
241 /* The current value of the symbol cache size.
242 This is saved so that if the user enters a value too big we can restore
243 the original value from here. */
244 static unsigned int symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
246 /* True if a file may be known by two different basenames.
247 This is the uncommon case, and significantly slows down gdb.
248 Default set to "off" to not slow down the common case. */
249 bool basenames_may_differ
= false;
251 /* Allow the user to configure the debugger behavior with respect
252 to multiple-choice menus when more than one symbol matches during
255 const char multiple_symbols_ask
[] = "ask";
256 const char multiple_symbols_all
[] = "all";
257 const char multiple_symbols_cancel
[] = "cancel";
258 static const char *const multiple_symbols_modes
[] =
260 multiple_symbols_ask
,
261 multiple_symbols_all
,
262 multiple_symbols_cancel
,
265 static const char *multiple_symbols_mode
= multiple_symbols_all
;
267 /* Read-only accessor to AUTO_SELECT_MODE. */
270 multiple_symbols_select_mode (void)
272 return multiple_symbols_mode
;
275 /* Return the name of a domain_enum. */
278 domain_name (domain_enum e
)
282 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
283 case VAR_DOMAIN
: return "VAR_DOMAIN";
284 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
285 case MODULE_DOMAIN
: return "MODULE_DOMAIN";
286 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
287 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
288 default: gdb_assert_not_reached ("bad domain_enum");
292 /* Return the name of a search_domain . */
295 search_domain_name (enum search_domain e
)
299 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
300 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
301 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
302 case MODULES_DOMAIN
: return "MODULES_DOMAIN";
303 case ALL_DOMAIN
: return "ALL_DOMAIN";
304 default: gdb_assert_not_reached ("bad search_domain");
311 compunit_primary_filetab (const struct compunit_symtab
*cust
)
313 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
315 /* The primary file symtab is the first one in the list. */
316 return COMPUNIT_FILETABS (cust
);
322 compunit_language (const struct compunit_symtab
*cust
)
324 struct symtab
*symtab
= compunit_primary_filetab (cust
);
326 /* The language of the compunit symtab is the language of its primary
328 return SYMTAB_LANGUAGE (symtab
);
334 minimal_symbol::data_p () const
336 return type
== mst_data
339 || type
== mst_file_data
340 || type
== mst_file_bss
;
346 minimal_symbol::text_p () const
348 return type
== mst_text
349 || type
== mst_text_gnu_ifunc
350 || type
== mst_data_gnu_ifunc
351 || type
== mst_slot_got_plt
352 || type
== mst_solib_trampoline
353 || type
== mst_file_text
;
356 /* See whether FILENAME matches SEARCH_NAME using the rule that we
357 advertise to the user. (The manual's description of linespecs
358 describes what we advertise). Returns true if they match, false
362 compare_filenames_for_search (const char *filename
, const char *search_name
)
364 int len
= strlen (filename
);
365 size_t search_len
= strlen (search_name
);
367 if (len
< search_len
)
370 /* The tail of FILENAME must match. */
371 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
374 /* Either the names must completely match, or the character
375 preceding the trailing SEARCH_NAME segment of FILENAME must be a
378 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
379 cannot match FILENAME "/path//dir/file.c" - as user has requested
380 absolute path. The sama applies for "c:\file.c" possibly
381 incorrectly hypothetically matching "d:\dir\c:\file.c".
383 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
384 compatible with SEARCH_NAME "file.c". In such case a compiler had
385 to put the "c:file.c" name into debug info. Such compatibility
386 works only on GDB built for DOS host. */
387 return (len
== search_len
388 || (!IS_ABSOLUTE_PATH (search_name
)
389 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
390 || (HAS_DRIVE_SPEC (filename
)
391 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
394 /* Same as compare_filenames_for_search, but for glob-style patterns.
395 Heads up on the order of the arguments. They match the order of
396 compare_filenames_for_search, but it's the opposite of the order of
397 arguments to gdb_filename_fnmatch. */
400 compare_glob_filenames_for_search (const char *filename
,
401 const char *search_name
)
403 /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
404 all /s have to be explicitly specified. */
405 int file_path_elements
= count_path_elements (filename
);
406 int search_path_elements
= count_path_elements (search_name
);
408 if (search_path_elements
> file_path_elements
)
411 if (IS_ABSOLUTE_PATH (search_name
))
413 return (search_path_elements
== file_path_elements
414 && gdb_filename_fnmatch (search_name
, filename
,
415 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0);
419 const char *file_to_compare
420 = strip_leading_path_elements (filename
,
421 file_path_elements
- search_path_elements
);
423 return gdb_filename_fnmatch (search_name
, file_to_compare
,
424 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0;
428 /* Check for a symtab of a specific name by searching some symtabs.
429 This is a helper function for callbacks of iterate_over_symtabs.
431 If NAME is not absolute, then REAL_PATH is NULL
432 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
434 The return value, NAME, REAL_PATH and CALLBACK are identical to the
435 `map_symtabs_matching_filename' method of quick_symbol_functions.
437 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
438 Each symtab within the specified compunit symtab is also searched.
439 AFTER_LAST is one past the last compunit symtab to search; NULL means to
440 search until the end of the list. */
443 iterate_over_some_symtabs (const char *name
,
444 const char *real_path
,
445 struct compunit_symtab
*first
,
446 struct compunit_symtab
*after_last
,
447 gdb::function_view
<bool (symtab
*)> callback
)
449 struct compunit_symtab
*cust
;
450 const char* base_name
= lbasename (name
);
452 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
454 for (symtab
*s
: compunit_filetabs (cust
))
456 if (compare_filenames_for_search (s
->filename
, name
))
463 /* Before we invoke realpath, which can get expensive when many
464 files are involved, do a quick comparison of the basenames. */
465 if (! basenames_may_differ
466 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
469 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
476 /* If the user gave us an absolute path, try to find the file in
477 this symtab and use its absolute path. */
478 if (real_path
!= NULL
)
480 const char *fullname
= symtab_to_fullname (s
);
482 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
483 gdb_assert (IS_ABSOLUTE_PATH (name
));
484 gdb::unique_xmalloc_ptr
<char> fullname_real_path
485 = gdb_realpath (fullname
);
486 fullname
= fullname_real_path
.get ();
487 if (FILENAME_CMP (real_path
, fullname
) == 0)
500 /* Check for a symtab of a specific name; first in symtabs, then in
501 psymtabs. *If* there is no '/' in the name, a match after a '/'
502 in the symtab filename will also work.
504 Calls CALLBACK with each symtab that is found. If CALLBACK returns
505 true, the search stops. */
508 iterate_over_symtabs (const char *name
,
509 gdb::function_view
<bool (symtab
*)> callback
)
511 gdb::unique_xmalloc_ptr
<char> real_path
;
513 /* Here we are interested in canonicalizing an absolute path, not
514 absolutizing a relative path. */
515 if (IS_ABSOLUTE_PATH (name
))
517 real_path
= gdb_realpath (name
);
518 gdb_assert (IS_ABSOLUTE_PATH (real_path
.get ()));
521 for (objfile
*objfile
: current_program_space
->objfiles ())
523 if (iterate_over_some_symtabs (name
, real_path
.get (),
524 objfile
->compunit_symtabs
, NULL
,
529 /* Same search rules as above apply here, but now we look thru the
532 for (objfile
*objfile
: current_program_space
->objfiles ())
535 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
543 /* A wrapper for iterate_over_symtabs that returns the first matching
547 lookup_symtab (const char *name
)
549 struct symtab
*result
= NULL
;
551 iterate_over_symtabs (name
, [&] (symtab
*symtab
)
561 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
562 full method name, which consist of the class name (from T), the unadorned
563 method name from METHOD_ID, and the signature for the specific overload,
564 specified by SIGNATURE_ID. Note that this function is g++ specific. */
567 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
569 int mangled_name_len
;
571 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
572 struct fn_field
*method
= &f
[signature_id
];
573 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
574 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
575 const char *newname
= TYPE_NAME (type
);
577 /* Does the form of physname indicate that it is the full mangled name
578 of a constructor (not just the args)? */
579 int is_full_physname_constructor
;
582 int is_destructor
= is_destructor_name (physname
);
583 /* Need a new type prefix. */
584 const char *const_prefix
= method
->is_const
? "C" : "";
585 const char *volatile_prefix
= method
->is_volatile
? "V" : "";
587 int len
= (newname
== NULL
? 0 : strlen (newname
));
589 /* Nothing to do if physname already contains a fully mangled v3 abi name
590 or an operator name. */
591 if ((physname
[0] == '_' && physname
[1] == 'Z')
592 || is_operator_name (field_name
))
593 return xstrdup (physname
);
595 is_full_physname_constructor
= is_constructor_name (physname
);
597 is_constructor
= is_full_physname_constructor
598 || (newname
&& strcmp (field_name
, newname
) == 0);
601 is_destructor
= (startswith (physname
, "__dt"));
603 if (is_destructor
|| is_full_physname_constructor
)
605 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
606 strcpy (mangled_name
, physname
);
612 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
614 else if (physname
[0] == 't' || physname
[0] == 'Q')
616 /* The physname for template and qualified methods already includes
618 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
624 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
625 volatile_prefix
, len
);
627 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
628 + strlen (buf
) + len
+ strlen (physname
) + 1);
630 mangled_name
= (char *) xmalloc (mangled_name_len
);
632 mangled_name
[0] = '\0';
634 strcpy (mangled_name
, field_name
);
636 strcat (mangled_name
, buf
);
637 /* If the class doesn't have a name, i.e. newname NULL, then we just
638 mangle it using 0 for the length of the class. Thus it gets mangled
639 as something starting with `::' rather than `classname::'. */
641 strcat (mangled_name
, newname
);
643 strcat (mangled_name
, physname
);
644 return (mangled_name
);
647 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
648 correctly allocated. */
651 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
653 struct obstack
*obstack
)
655 if (gsymbol
->language
== language_ada
)
659 gsymbol
->ada_mangled
= 0;
660 gsymbol
->language_specific
.obstack
= obstack
;
664 gsymbol
->ada_mangled
= 1;
665 gsymbol
->language_specific
.demangled_name
= name
;
669 gsymbol
->language_specific
.demangled_name
= name
;
672 /* Return the demangled name of GSYMBOL. */
675 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
677 if (gsymbol
->language
== language_ada
)
679 if (!gsymbol
->ada_mangled
)
684 return gsymbol
->language_specific
.demangled_name
;
688 /* Initialize the language dependent portion of a symbol
689 depending upon the language for the symbol. */
692 symbol_set_language (struct general_symbol_info
*gsymbol
,
693 enum language language
,
694 struct obstack
*obstack
)
696 gsymbol
->language
= language
;
697 if (gsymbol
->language
== language_cplus
698 || gsymbol
->language
== language_d
699 || gsymbol
->language
== language_go
700 || gsymbol
->language
== language_objc
701 || gsymbol
->language
== language_fortran
)
703 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
705 else if (gsymbol
->language
== language_ada
)
707 gdb_assert (gsymbol
->ada_mangled
== 0);
708 gsymbol
->language_specific
.obstack
= obstack
;
712 memset (&gsymbol
->language_specific
, 0,
713 sizeof (gsymbol
->language_specific
));
717 /* Functions to initialize a symbol's mangled name. */
719 /* Objects of this type are stored in the demangled name hash table. */
720 struct demangled_name_entry
722 demangled_name_entry (gdb::string_view mangled_name
)
723 : mangled (mangled_name
) {}
725 gdb::string_view mangled
;
726 enum language language
;
727 gdb::unique_xmalloc_ptr
<char> demangled
;
730 /* Hash function for the demangled name hash. */
733 hash_demangled_name_entry (const void *data
)
735 const struct demangled_name_entry
*e
736 = (const struct demangled_name_entry
*) data
;
738 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
741 /* Equality function for the demangled name hash. */
744 eq_demangled_name_entry (const void *a
, const void *b
)
746 const struct demangled_name_entry
*da
747 = (const struct demangled_name_entry
*) a
;
748 const struct demangled_name_entry
*db
749 = (const struct demangled_name_entry
*) b
;
751 return da
->mangled
== db
->mangled
;
755 free_demangled_name_entry (void *data
)
757 struct demangled_name_entry
*e
758 = (struct demangled_name_entry
*) data
;
760 e
->~demangled_name_entry();
763 /* Create the hash table used for demangled names. Each hash entry is
764 a pair of strings; one for the mangled name and one for the demangled
765 name. The entry is hashed via just the mangled name. */
768 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
770 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
771 The hash table code will round this up to the next prime number.
772 Choosing a much larger table size wastes memory, and saves only about
773 1% in symbol reading. However, if the minsym count is already
774 initialized (e.g. because symbol name setting was deferred to
775 a background thread) we can initialize the hashtable with a count
776 based on that, because we will almost certainly have at least that
777 many entries. If we have a nonzero number but less than 256,
778 we still stay with 256 to have some space for psymbols, etc. */
780 /* htab will expand the table when it is 3/4th full, so we account for that
781 here. +2 to round up. */
782 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
783 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
785 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
786 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
787 free_demangled_name_entry
, xcalloc
, xfree
));
790 /* Try to determine the demangled name for a symbol, based on the
791 language of that symbol. If the language is set to language_auto,
792 it will attempt to find any demangling algorithm that works and
793 then set the language appropriately. The returned name is allocated
794 by the demangler and should be xfree'd. */
797 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
800 char *demangled
= NULL
;
803 if (gsymbol
->language
== language_unknown
)
804 gsymbol
->language
= language_auto
;
806 if (gsymbol
->language
!= language_auto
)
808 const struct language_defn
*lang
= language_def (gsymbol
->language
);
810 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
814 for (i
= language_unknown
; i
< nr_languages
; ++i
)
816 enum language l
= (enum language
) i
;
817 const struct language_defn
*lang
= language_def (l
);
819 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
821 gsymbol
->language
= l
;
829 /* Set both the mangled and demangled (if any) names for GSYMBOL based
830 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
831 objfile's obstack; but if COPY_NAME is 0 and if NAME is
832 NUL-terminated, then this function assumes that NAME is already
833 correctly saved (either permanently or with a lifetime tied to the
834 objfile), and it will not be copied.
836 The hash table corresponding to OBJFILE is used, and the memory
837 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
838 so the pointer can be discarded after calling this function. */
841 symbol_set_names (struct general_symbol_info
*gsymbol
,
842 gdb::string_view linkage_name
, bool copy_name
,
843 struct objfile_per_bfd_storage
*per_bfd
)
845 struct demangled_name_entry
**slot
;
847 if (gsymbol
->language
== language_ada
)
849 /* In Ada, we do the symbol lookups using the mangled name, so
850 we can save some space by not storing the demangled name. */
852 gsymbol
->name
= linkage_name
.data ();
855 char *name
= (char *) obstack_alloc (&per_bfd
->storage_obstack
,
856 linkage_name
.length () + 1);
858 memcpy (name
, linkage_name
.data (), linkage_name
.length ());
859 name
[linkage_name
.length ()] = '\0';
860 gsymbol
->name
= name
;
862 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
867 if (per_bfd
->demangled_names_hash
== NULL
)
868 create_demangled_names_hash (per_bfd
);
870 struct demangled_name_entry
entry (linkage_name
);
871 slot
= ((struct demangled_name_entry
**)
872 htab_find_slot (per_bfd
->demangled_names_hash
.get (),
875 /* If this name is not in the hash table, add it. */
877 /* A C version of the symbol may have already snuck into the table.
878 This happens to, e.g., main.init (__go_init_main). Cope. */
879 || (gsymbol
->language
== language_go
&& (*slot
)->demangled
== nullptr))
881 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
882 to true if the string might not be nullterminated. We have to make
883 this copy because demangling needs a nullterminated string. */
884 gdb::string_view linkage_name_copy
;
887 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
888 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
889 alloc_name
[linkage_name
.length ()] = '\0';
891 linkage_name_copy
= gdb::string_view (alloc_name
,
892 linkage_name
.length ());
895 linkage_name_copy
= linkage_name
;
897 gdb::unique_xmalloc_ptr
<char> demangled_name_ptr
898 (symbol_find_demangled_name (gsymbol
, linkage_name_copy
.data ()));
900 /* Suppose we have demangled_name==NULL, copy_name==0, and
901 linkage_name_copy==linkage_name. In this case, we already have the
902 mangled name saved, and we don't have a demangled name. So,
903 you might think we could save a little space by not recording
904 this in the hash table at all.
906 It turns out that it is actually important to still save such
907 an entry in the hash table, because storing this name gives
908 us better bcache hit rates for partial symbols. */
912 = ((struct demangled_name_entry
*)
913 obstack_alloc (&per_bfd
->storage_obstack
,
914 sizeof (demangled_name_entry
)));
915 new (*slot
) demangled_name_entry (linkage_name
);
919 /* If we must copy the mangled name, put it directly after
920 the struct so we can have a single allocation. */
922 = ((struct demangled_name_entry
*)
923 obstack_alloc (&per_bfd
->storage_obstack
,
924 sizeof (demangled_name_entry
)
925 + linkage_name
.length () + 1));
926 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
927 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
928 mangled_ptr
[linkage_name
.length ()] = '\0';
929 new (*slot
) demangled_name_entry
930 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
932 (*slot
)->demangled
= std::move (demangled_name_ptr
);
933 (*slot
)->language
= gsymbol
->language
;
935 else if (gsymbol
->language
== language_unknown
936 || gsymbol
->language
== language_auto
)
937 gsymbol
->language
= (*slot
)->language
;
939 gsymbol
->name
= (*slot
)->mangled
.data ();
940 if ((*slot
)->demangled
!= nullptr)
941 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
.get (),
942 &per_bfd
->storage_obstack
);
944 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
950 general_symbol_info::natural_name () const
958 case language_fortran
:
959 if (symbol_get_demangled_name (this) != NULL
)
960 return symbol_get_demangled_name (this);
963 return ada_decode_symbol (this);
973 general_symbol_info::demangled_name () const
975 const char *dem_name
= NULL
;
983 case language_fortran
:
984 dem_name
= symbol_get_demangled_name (this);
987 dem_name
= ada_decode_symbol (this);
998 general_symbol_info::search_name () const
1000 if (language
== language_ada
)
1003 return natural_name ();
1009 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1010 const lookup_name_info
&name
)
1012 symbol_name_matcher_ftype
*name_match
1013 = get_symbol_name_matcher (language_def (gsymbol
->language
), name
);
1014 return name_match (gsymbol
->search_name (), name
, NULL
);
1019 /* Return true if the two sections are the same, or if they could
1020 plausibly be copies of each other, one in an original object
1021 file and another in a separated debug file. */
1024 matching_obj_sections (struct obj_section
*obj_first
,
1025 struct obj_section
*obj_second
)
1027 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1028 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1030 /* If they're the same section, then they match. */
1031 if (first
== second
)
1034 /* If either is NULL, give up. */
1035 if (first
== NULL
|| second
== NULL
)
1038 /* This doesn't apply to absolute symbols. */
1039 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1042 /* If they're in the same object file, they must be different sections. */
1043 if (first
->owner
== second
->owner
)
1046 /* Check whether the two sections are potentially corresponding. They must
1047 have the same size, address, and name. We can't compare section indexes,
1048 which would be more reliable, because some sections may have been
1050 if (bfd_section_size (first
) != bfd_section_size (second
))
1053 /* In-memory addresses may start at a different offset, relativize them. */
1054 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1055 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1058 if (bfd_section_name (first
) == NULL
1059 || bfd_section_name (second
) == NULL
1060 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1063 /* Otherwise check that they are in corresponding objfiles. */
1065 struct objfile
*obj
= NULL
;
1066 for (objfile
*objfile
: current_program_space
->objfiles ())
1067 if (objfile
->obfd
== first
->owner
)
1072 gdb_assert (obj
!= NULL
);
1074 if (obj
->separate_debug_objfile
!= NULL
1075 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1077 if (obj
->separate_debug_objfile_backlink
!= NULL
1078 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1087 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1089 struct bound_minimal_symbol msymbol
;
1091 /* If we know that this is not a text address, return failure. This is
1092 necessary because we loop based on texthigh and textlow, which do
1093 not include the data ranges. */
1094 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1095 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1098 for (objfile
*objfile
: current_program_space
->objfiles ())
1100 struct compunit_symtab
*cust
= NULL
;
1103 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1110 /* Hash function for the symbol cache. */
1113 hash_symbol_entry (const struct objfile
*objfile_context
,
1114 const char *name
, domain_enum domain
)
1116 unsigned int hash
= (uintptr_t) objfile_context
;
1119 hash
+= htab_hash_string (name
);
1121 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1122 to map to the same slot. */
1123 if (domain
== STRUCT_DOMAIN
)
1124 hash
+= VAR_DOMAIN
* 7;
1131 /* Equality function for the symbol cache. */
1134 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1135 const struct objfile
*objfile_context
,
1136 const char *name
, domain_enum domain
)
1138 const char *slot_name
;
1139 domain_enum slot_domain
;
1141 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1144 if (slot
->objfile_context
!= objfile_context
)
1147 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1149 slot_name
= slot
->value
.not_found
.name
;
1150 slot_domain
= slot
->value
.not_found
.domain
;
1154 slot_name
= SYMBOL_SEARCH_NAME (slot
->value
.found
.symbol
);
1155 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1158 /* NULL names match. */
1159 if (slot_name
== NULL
&& name
== NULL
)
1161 /* But there's no point in calling symbol_matches_domain in the
1162 SYMBOL_SLOT_FOUND case. */
1163 if (slot_domain
!= domain
)
1166 else if (slot_name
!= NULL
&& name
!= NULL
)
1168 /* It's important that we use the same comparison that was done
1169 the first time through. If the slot records a found symbol,
1170 then this means using the symbol name comparison function of
1171 the symbol's language with SYMBOL_SEARCH_NAME. See
1172 dictionary.c. It also means using symbol_matches_domain for
1173 found symbols. See block.c.
1175 If the slot records a not-found symbol, then require a precise match.
1176 We could still be lax with whitespace like strcmp_iw though. */
1178 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1180 if (strcmp (slot_name
, name
) != 0)
1182 if (slot_domain
!= domain
)
1187 struct symbol
*sym
= slot
->value
.found
.symbol
;
1188 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1190 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1193 if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1194 slot_domain
, domain
))
1200 /* Only one name is NULL. */
1207 /* Given a cache of size SIZE, return the size of the struct (with variable
1208 length array) in bytes. */
1211 symbol_cache_byte_size (unsigned int size
)
1213 return (sizeof (struct block_symbol_cache
)
1214 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1220 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1222 /* If there's no change in size, don't do anything.
1223 All caches have the same size, so we can just compare with the size
1224 of the global symbols cache. */
1225 if ((cache
->global_symbols
!= NULL
1226 && cache
->global_symbols
->size
== new_size
)
1227 || (cache
->global_symbols
== NULL
1231 xfree (cache
->global_symbols
);
1232 xfree (cache
->static_symbols
);
1236 cache
->global_symbols
= NULL
;
1237 cache
->static_symbols
= NULL
;
1241 size_t total_size
= symbol_cache_byte_size (new_size
);
1243 cache
->global_symbols
1244 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1245 cache
->static_symbols
1246 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1247 cache
->global_symbols
->size
= new_size
;
1248 cache
->static_symbols
->size
= new_size
;
1252 /* Return the symbol cache of PSPACE.
1253 Create one if it doesn't exist yet. */
1255 static struct symbol_cache
*
1256 get_symbol_cache (struct program_space
*pspace
)
1258 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1262 cache
= symbol_cache_key
.emplace (pspace
);
1263 resize_symbol_cache (cache
, symbol_cache_size
);
1269 /* Set the size of the symbol cache in all program spaces. */
1272 set_symbol_cache_size (unsigned int new_size
)
1274 struct program_space
*pspace
;
1276 ALL_PSPACES (pspace
)
1278 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1280 /* The pspace could have been created but not have a cache yet. */
1282 resize_symbol_cache (cache
, new_size
);
1286 /* Called when symbol-cache-size is set. */
1289 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1290 struct cmd_list_element
*c
)
1292 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1294 /* Restore the previous value.
1295 This is the value the "show" command prints. */
1296 new_symbol_cache_size
= symbol_cache_size
;
1298 error (_("Symbol cache size is too large, max is %u."),
1299 MAX_SYMBOL_CACHE_SIZE
);
1301 symbol_cache_size
= new_symbol_cache_size
;
1303 set_symbol_cache_size (symbol_cache_size
);
1306 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1307 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1308 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1309 failed (and thus this one will too), or NULL if the symbol is not present
1311 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1312 can be used to save the result of a full lookup attempt. */
1314 static struct block_symbol
1315 symbol_cache_lookup (struct symbol_cache
*cache
,
1316 struct objfile
*objfile_context
, enum block_enum block
,
1317 const char *name
, domain_enum domain
,
1318 struct block_symbol_cache
**bsc_ptr
,
1319 struct symbol_cache_slot
**slot_ptr
)
1321 struct block_symbol_cache
*bsc
;
1323 struct symbol_cache_slot
*slot
;
1325 if (block
== GLOBAL_BLOCK
)
1326 bsc
= cache
->global_symbols
;
1328 bsc
= cache
->static_symbols
;
1336 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1337 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1342 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1344 if (symbol_lookup_debug
)
1345 fprintf_unfiltered (gdb_stdlog
,
1346 "%s block symbol cache hit%s for %s, %s\n",
1347 block
== GLOBAL_BLOCK
? "Global" : "Static",
1348 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1349 ? " (not found)" : "",
1350 name
, domain_name (domain
));
1352 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1353 return SYMBOL_LOOKUP_FAILED
;
1354 return slot
->value
.found
;
1357 /* Symbol is not present in the cache. */
1359 if (symbol_lookup_debug
)
1361 fprintf_unfiltered (gdb_stdlog
,
1362 "%s block symbol cache miss for %s, %s\n",
1363 block
== GLOBAL_BLOCK
? "Global" : "Static",
1364 name
, domain_name (domain
));
1370 /* Clear out SLOT. */
1373 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
1375 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1376 xfree (slot
->value
.not_found
.name
);
1377 slot
->state
= SYMBOL_SLOT_UNUSED
;
1380 /* Mark SYMBOL as found in SLOT.
1381 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1382 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1383 necessarily the objfile the symbol was found in. */
1386 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1387 struct symbol_cache_slot
*slot
,
1388 struct objfile
*objfile_context
,
1389 struct symbol
*symbol
,
1390 const struct block
*block
)
1394 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1397 symbol_cache_clear_slot (slot
);
1399 slot
->state
= SYMBOL_SLOT_FOUND
;
1400 slot
->objfile_context
= objfile_context
;
1401 slot
->value
.found
.symbol
= symbol
;
1402 slot
->value
.found
.block
= block
;
1405 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1406 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1407 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1410 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1411 struct symbol_cache_slot
*slot
,
1412 struct objfile
*objfile_context
,
1413 const char *name
, domain_enum domain
)
1417 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1420 symbol_cache_clear_slot (slot
);
1422 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1423 slot
->objfile_context
= objfile_context
;
1424 slot
->value
.not_found
.name
= xstrdup (name
);
1425 slot
->value
.not_found
.domain
= domain
;
1428 /* Flush the symbol cache of PSPACE. */
1431 symbol_cache_flush (struct program_space
*pspace
)
1433 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1438 if (cache
->global_symbols
== NULL
)
1440 gdb_assert (symbol_cache_size
== 0);
1441 gdb_assert (cache
->static_symbols
== NULL
);
1445 /* If the cache is untouched since the last flush, early exit.
1446 This is important for performance during the startup of a program linked
1447 with 100s (or 1000s) of shared libraries. */
1448 if (cache
->global_symbols
->misses
== 0
1449 && cache
->static_symbols
->misses
== 0)
1452 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1453 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1455 for (pass
= 0; pass
< 2; ++pass
)
1457 struct block_symbol_cache
*bsc
1458 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1461 for (i
= 0; i
< bsc
->size
; ++i
)
1462 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1465 cache
->global_symbols
->hits
= 0;
1466 cache
->global_symbols
->misses
= 0;
1467 cache
->global_symbols
->collisions
= 0;
1468 cache
->static_symbols
->hits
= 0;
1469 cache
->static_symbols
->misses
= 0;
1470 cache
->static_symbols
->collisions
= 0;
1476 symbol_cache_dump (const struct symbol_cache
*cache
)
1480 if (cache
->global_symbols
== NULL
)
1482 printf_filtered (" <disabled>\n");
1486 for (pass
= 0; pass
< 2; ++pass
)
1488 const struct block_symbol_cache
*bsc
1489 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1493 printf_filtered ("Global symbols:\n");
1495 printf_filtered ("Static symbols:\n");
1497 for (i
= 0; i
< bsc
->size
; ++i
)
1499 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1503 switch (slot
->state
)
1505 case SYMBOL_SLOT_UNUSED
:
1507 case SYMBOL_SLOT_NOT_FOUND
:
1508 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1509 host_address_to_string (slot
->objfile_context
),
1510 slot
->value
.not_found
.name
,
1511 domain_name (slot
->value
.not_found
.domain
));
1513 case SYMBOL_SLOT_FOUND
:
1515 struct symbol
*found
= slot
->value
.found
.symbol
;
1516 const struct objfile
*context
= slot
->objfile_context
;
1518 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1519 host_address_to_string (context
),
1520 SYMBOL_PRINT_NAME (found
),
1521 domain_name (SYMBOL_DOMAIN (found
)));
1529 /* The "mt print symbol-cache" command. */
1532 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1534 struct program_space
*pspace
;
1536 ALL_PSPACES (pspace
)
1538 struct symbol_cache
*cache
;
1540 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1542 pspace
->symfile_object_file
!= NULL
1543 ? objfile_name (pspace
->symfile_object_file
)
1544 : "(no object file)");
1546 /* If the cache hasn't been created yet, avoid creating one. */
1547 cache
= symbol_cache_key
.get (pspace
);
1549 printf_filtered (" <empty>\n");
1551 symbol_cache_dump (cache
);
1555 /* The "mt flush-symbol-cache" command. */
1558 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1560 struct program_space
*pspace
;
1562 ALL_PSPACES (pspace
)
1564 symbol_cache_flush (pspace
);
1568 /* Print usage statistics of CACHE. */
1571 symbol_cache_stats (struct symbol_cache
*cache
)
1575 if (cache
->global_symbols
== NULL
)
1577 printf_filtered (" <disabled>\n");
1581 for (pass
= 0; pass
< 2; ++pass
)
1583 const struct block_symbol_cache
*bsc
1584 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1589 printf_filtered ("Global block cache stats:\n");
1591 printf_filtered ("Static block cache stats:\n");
1593 printf_filtered (" size: %u\n", bsc
->size
);
1594 printf_filtered (" hits: %u\n", bsc
->hits
);
1595 printf_filtered (" misses: %u\n", bsc
->misses
);
1596 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1600 /* The "mt print symbol-cache-statistics" command. */
1603 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1605 struct program_space
*pspace
;
1607 ALL_PSPACES (pspace
)
1609 struct symbol_cache
*cache
;
1611 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1613 pspace
->symfile_object_file
!= NULL
1614 ? objfile_name (pspace
->symfile_object_file
)
1615 : "(no object file)");
1617 /* If the cache hasn't been created yet, avoid creating one. */
1618 cache
= symbol_cache_key
.get (pspace
);
1620 printf_filtered (" empty, no stats available\n");
1622 symbol_cache_stats (cache
);
1626 /* This module's 'new_objfile' observer. */
1629 symtab_new_objfile_observer (struct objfile
*objfile
)
1631 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1632 symbol_cache_flush (current_program_space
);
1635 /* This module's 'free_objfile' observer. */
1638 symtab_free_objfile_observer (struct objfile
*objfile
)
1640 symbol_cache_flush (objfile
->pspace
);
1643 /* Debug symbols usually don't have section information. We need to dig that
1644 out of the minimal symbols and stash that in the debug symbol. */
1647 fixup_section (struct general_symbol_info
*ginfo
,
1648 CORE_ADDR addr
, struct objfile
*objfile
)
1650 struct minimal_symbol
*msym
;
1652 /* First, check whether a minimal symbol with the same name exists
1653 and points to the same address. The address check is required
1654 e.g. on PowerPC64, where the minimal symbol for a function will
1655 point to the function descriptor, while the debug symbol will
1656 point to the actual function code. */
1657 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1659 ginfo
->section
= MSYMBOL_SECTION (msym
);
1662 /* Static, function-local variables do appear in the linker
1663 (minimal) symbols, but are frequently given names that won't
1664 be found via lookup_minimal_symbol(). E.g., it has been
1665 observed in frv-uclinux (ELF) executables that a static,
1666 function-local variable named "foo" might appear in the
1667 linker symbols as "foo.6" or "foo.3". Thus, there is no
1668 point in attempting to extend the lookup-by-name mechanism to
1669 handle this case due to the fact that there can be multiple
1672 So, instead, search the section table when lookup by name has
1673 failed. The ``addr'' and ``endaddr'' fields may have already
1674 been relocated. If so, the relocation offset (i.e. the
1675 ANOFFSET value) needs to be subtracted from these values when
1676 performing the comparison. We unconditionally subtract it,
1677 because, when no relocation has been performed, the ANOFFSET
1678 value will simply be zero.
1680 The address of the symbol whose section we're fixing up HAS
1681 NOT BEEN adjusted (relocated) yet. It can't have been since
1682 the section isn't yet known and knowing the section is
1683 necessary in order to add the correct relocation value. In
1684 other words, we wouldn't even be in this function (attempting
1685 to compute the section) if it were already known.
1687 Note that it is possible to search the minimal symbols
1688 (subtracting the relocation value if necessary) to find the
1689 matching minimal symbol, but this is overkill and much less
1690 efficient. It is not necessary to find the matching minimal
1691 symbol, only its section.
1693 Note that this technique (of doing a section table search)
1694 can fail when unrelocated section addresses overlap. For
1695 this reason, we still attempt a lookup by name prior to doing
1696 a search of the section table. */
1698 struct obj_section
*s
;
1701 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1703 int idx
= s
- objfile
->sections
;
1704 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1709 if (obj_section_addr (s
) - offset
<= addr
1710 && addr
< obj_section_endaddr (s
) - offset
)
1712 ginfo
->section
= idx
;
1717 /* If we didn't find the section, assume it is in the first
1718 section. If there is no allocated section, then it hardly
1719 matters what we pick, so just pick zero. */
1723 ginfo
->section
= fallback
;
1728 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1735 if (!SYMBOL_OBJFILE_OWNED (sym
))
1738 /* We either have an OBJFILE, or we can get at it from the sym's
1739 symtab. Anything else is a bug. */
1740 gdb_assert (objfile
|| symbol_symtab (sym
));
1742 if (objfile
== NULL
)
1743 objfile
= symbol_objfile (sym
);
1745 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1748 /* We should have an objfile by now. */
1749 gdb_assert (objfile
);
1751 switch (SYMBOL_CLASS (sym
))
1755 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1758 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1762 /* Nothing else will be listed in the minsyms -- no use looking
1767 fixup_section (sym
, addr
, objfile
);
1774 demangle_for_lookup_info::demangle_for_lookup_info
1775 (const lookup_name_info
&lookup_name
, language lang
)
1777 demangle_result_storage storage
;
1779 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1781 gdb::unique_xmalloc_ptr
<char> without_params
1782 = cp_remove_params_if_any (lookup_name
.name ().c_str (),
1783 lookup_name
.completion_mode ());
1785 if (without_params
!= NULL
)
1787 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1788 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1794 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1795 m_demangled_name
= lookup_name
.name ();
1797 m_demangled_name
= demangle_for_lookup (lookup_name
.name ().c_str (),
1803 const lookup_name_info
&
1804 lookup_name_info::match_any ()
1806 /* Lookup any symbol that "" would complete. I.e., this matches all
1808 static const lookup_name_info
lookup_name ({}, symbol_name_match_type::FULL
,
1814 /* Compute the demangled form of NAME as used by the various symbol
1815 lookup functions. The result can either be the input NAME
1816 directly, or a pointer to a buffer owned by the STORAGE object.
1818 For Ada, this function just returns NAME, unmodified.
1819 Normally, Ada symbol lookups are performed using the encoded name
1820 rather than the demangled name, and so it might seem to make sense
1821 for this function to return an encoded version of NAME.
1822 Unfortunately, we cannot do this, because this function is used in
1823 circumstances where it is not appropriate to try to encode NAME.
1824 For instance, when displaying the frame info, we demangle the name
1825 of each parameter, and then perform a symbol lookup inside our
1826 function using that demangled name. In Ada, certain functions
1827 have internally-generated parameters whose name contain uppercase
1828 characters. Encoding those name would result in those uppercase
1829 characters to become lowercase, and thus cause the symbol lookup
1833 demangle_for_lookup (const char *name
, enum language lang
,
1834 demangle_result_storage
&storage
)
1836 /* If we are using C++, D, or Go, demangle the name before doing a
1837 lookup, so we can always binary search. */
1838 if (lang
== language_cplus
)
1840 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1841 if (demangled_name
!= NULL
)
1842 return storage
.set_malloc_ptr (demangled_name
);
1844 /* If we were given a non-mangled name, canonicalize it
1845 according to the language (so far only for C++). */
1846 std::string canon
= cp_canonicalize_string (name
);
1847 if (!canon
.empty ())
1848 return storage
.swap_string (canon
);
1850 else if (lang
== language_d
)
1852 char *demangled_name
= d_demangle (name
, 0);
1853 if (demangled_name
!= NULL
)
1854 return storage
.set_malloc_ptr (demangled_name
);
1856 else if (lang
== language_go
)
1858 char *demangled_name
= go_demangle (name
, 0);
1859 if (demangled_name
!= NULL
)
1860 return storage
.set_malloc_ptr (demangled_name
);
1869 search_name_hash (enum language language
, const char *search_name
)
1871 return language_def (language
)->la_search_name_hash (search_name
);
1876 This function (or rather its subordinates) have a bunch of loops and
1877 it would seem to be attractive to put in some QUIT's (though I'm not really
1878 sure whether it can run long enough to be really important). But there
1879 are a few calls for which it would appear to be bad news to quit
1880 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1881 that there is C++ code below which can error(), but that probably
1882 doesn't affect these calls since they are looking for a known
1883 variable and thus can probably assume it will never hit the C++
1887 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1888 const domain_enum domain
, enum language lang
,
1889 struct field_of_this_result
*is_a_field_of_this
)
1891 demangle_result_storage storage
;
1892 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1894 return lookup_symbol_aux (modified_name
,
1895 symbol_name_match_type::FULL
,
1896 block
, domain
, lang
,
1897 is_a_field_of_this
);
1903 lookup_symbol (const char *name
, const struct block
*block
,
1905 struct field_of_this_result
*is_a_field_of_this
)
1907 return lookup_symbol_in_language (name
, block
, domain
,
1908 current_language
->la_language
,
1909 is_a_field_of_this
);
1915 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1918 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1919 block
, domain
, language_asm
, NULL
);
1925 lookup_language_this (const struct language_defn
*lang
,
1926 const struct block
*block
)
1928 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1931 if (symbol_lookup_debug
> 1)
1933 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1935 fprintf_unfiltered (gdb_stdlog
,
1936 "lookup_language_this (%s, %s (objfile %s))",
1937 lang
->la_name
, host_address_to_string (block
),
1938 objfile_debug_name (objfile
));
1945 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1946 symbol_name_match_type::SEARCH_NAME
,
1950 if (symbol_lookup_debug
> 1)
1952 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1953 SYMBOL_PRINT_NAME (sym
),
1954 host_address_to_string (sym
),
1955 host_address_to_string (block
));
1957 return (struct block_symbol
) {sym
, block
};
1959 if (BLOCK_FUNCTION (block
))
1961 block
= BLOCK_SUPERBLOCK (block
);
1964 if (symbol_lookup_debug
> 1)
1965 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1969 /* Given TYPE, a structure/union,
1970 return 1 if the component named NAME from the ultimate target
1971 structure/union is defined, otherwise, return 0. */
1974 check_field (struct type
*type
, const char *name
,
1975 struct field_of_this_result
*is_a_field_of_this
)
1979 /* The type may be a stub. */
1980 type
= check_typedef (type
);
1982 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1984 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1986 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1988 is_a_field_of_this
->type
= type
;
1989 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1994 /* C++: If it was not found as a data field, then try to return it
1995 as a pointer to a method. */
1997 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1999 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2001 is_a_field_of_this
->type
= type
;
2002 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2007 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2008 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2014 /* Behave like lookup_symbol except that NAME is the natural name
2015 (e.g., demangled name) of the symbol that we're looking for. */
2017 static struct block_symbol
2018 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2019 const struct block
*block
,
2020 const domain_enum domain
, enum language language
,
2021 struct field_of_this_result
*is_a_field_of_this
)
2023 struct block_symbol result
;
2024 const struct language_defn
*langdef
;
2026 if (symbol_lookup_debug
)
2028 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2030 fprintf_unfiltered (gdb_stdlog
,
2031 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2032 name
, host_address_to_string (block
),
2034 ? objfile_debug_name (objfile
) : "NULL",
2035 domain_name (domain
), language_str (language
));
2038 /* Make sure we do something sensible with is_a_field_of_this, since
2039 the callers that set this parameter to some non-null value will
2040 certainly use it later. If we don't set it, the contents of
2041 is_a_field_of_this are undefined. */
2042 if (is_a_field_of_this
!= NULL
)
2043 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2045 /* Search specified block and its superiors. Don't search
2046 STATIC_BLOCK or GLOBAL_BLOCK. */
2048 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2049 if (result
.symbol
!= NULL
)
2051 if (symbol_lookup_debug
)
2053 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2054 host_address_to_string (result
.symbol
));
2059 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2060 check to see if NAME is a field of `this'. */
2062 langdef
= language_def (language
);
2064 /* Don't do this check if we are searching for a struct. It will
2065 not be found by check_field, but will be found by other
2067 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2069 result
= lookup_language_this (langdef
, block
);
2073 struct type
*t
= result
.symbol
->type
;
2075 /* I'm not really sure that type of this can ever
2076 be typedefed; just be safe. */
2077 t
= check_typedef (t
);
2078 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2079 t
= TYPE_TARGET_TYPE (t
);
2081 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2082 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2083 error (_("Internal error: `%s' is not an aggregate"),
2084 langdef
->la_name_of_this
);
2086 if (check_field (t
, name
, is_a_field_of_this
))
2088 if (symbol_lookup_debug
)
2090 fprintf_unfiltered (gdb_stdlog
,
2091 "lookup_symbol_aux (...) = NULL\n");
2098 /* Now do whatever is appropriate for LANGUAGE to look
2099 up static and global variables. */
2101 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2102 if (result
.symbol
!= NULL
)
2104 if (symbol_lookup_debug
)
2106 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2107 host_address_to_string (result
.symbol
));
2112 /* Now search all static file-level symbols. Not strictly correct,
2113 but more useful than an error. */
2115 result
= lookup_static_symbol (name
, domain
);
2116 if (symbol_lookup_debug
)
2118 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2119 result
.symbol
!= NULL
2120 ? host_address_to_string (result
.symbol
)
2126 /* Check to see if the symbol is defined in BLOCK or its superiors.
2127 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2129 static struct block_symbol
2130 lookup_local_symbol (const char *name
,
2131 symbol_name_match_type match_type
,
2132 const struct block
*block
,
2133 const domain_enum domain
,
2134 enum language language
)
2137 const struct block
*static_block
= block_static_block (block
);
2138 const char *scope
= block_scope (block
);
2140 /* Check if either no block is specified or it's a global block. */
2142 if (static_block
== NULL
)
2145 while (block
!= static_block
)
2147 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2149 return (struct block_symbol
) {sym
, block
};
2151 if (language
== language_cplus
|| language
== language_fortran
)
2153 struct block_symbol blocksym
2154 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2157 if (blocksym
.symbol
!= NULL
)
2161 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2163 block
= BLOCK_SUPERBLOCK (block
);
2166 /* We've reached the end of the function without finding a result. */
2174 lookup_objfile_from_block (const struct block
*block
)
2179 block
= block_global_block (block
);
2180 /* Look through all blockvectors. */
2181 for (objfile
*obj
: current_program_space
->objfiles ())
2183 for (compunit_symtab
*cust
: obj
->compunits ())
2184 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2187 if (obj
->separate_debug_objfile_backlink
)
2188 obj
= obj
->separate_debug_objfile_backlink
;
2200 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2201 const struct block
*block
,
2202 const domain_enum domain
)
2206 if (symbol_lookup_debug
> 1)
2208 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2210 fprintf_unfiltered (gdb_stdlog
,
2211 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2212 name
, host_address_to_string (block
),
2213 objfile_debug_name (objfile
),
2214 domain_name (domain
));
2217 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2220 if (symbol_lookup_debug
> 1)
2222 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2223 host_address_to_string (sym
));
2225 return fixup_symbol_section (sym
, NULL
);
2228 if (symbol_lookup_debug
> 1)
2229 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2236 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2237 enum block_enum block_index
,
2239 const domain_enum domain
)
2241 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2243 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2245 struct block_symbol result
2246 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2248 if (result
.symbol
!= nullptr)
2255 /* Check to see if the symbol is defined in one of the OBJFILE's
2256 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2257 depending on whether or not we want to search global symbols or
2260 static struct block_symbol
2261 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2262 enum block_enum block_index
, const char *name
,
2263 const domain_enum domain
)
2265 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2267 if (symbol_lookup_debug
> 1)
2269 fprintf_unfiltered (gdb_stdlog
,
2270 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2271 objfile_debug_name (objfile
),
2272 block_index
== GLOBAL_BLOCK
2273 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2274 name
, domain_name (domain
));
2277 for (compunit_symtab
*cust
: objfile
->compunits ())
2279 const struct blockvector
*bv
;
2280 const struct block
*block
;
2281 struct block_symbol result
;
2283 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2284 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2285 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2286 result
.block
= block
;
2287 if (result
.symbol
!= NULL
)
2289 if (symbol_lookup_debug
> 1)
2291 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2292 host_address_to_string (result
.symbol
),
2293 host_address_to_string (block
));
2295 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2301 if (symbol_lookup_debug
> 1)
2302 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2306 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2307 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2308 and all associated separate debug objfiles.
2310 Normally we only look in OBJFILE, and not any separate debug objfiles
2311 because the outer loop will cause them to be searched too. This case is
2312 different. Here we're called from search_symbols where it will only
2313 call us for the objfile that contains a matching minsym. */
2315 static struct block_symbol
2316 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2317 const char *linkage_name
,
2320 enum language lang
= current_language
->la_language
;
2321 struct objfile
*main_objfile
;
2323 demangle_result_storage storage
;
2324 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2326 if (objfile
->separate_debug_objfile_backlink
)
2327 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2329 main_objfile
= objfile
;
2331 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2333 struct block_symbol result
;
2335 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2336 modified_name
, domain
);
2337 if (result
.symbol
== NULL
)
2338 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2339 modified_name
, domain
);
2340 if (result
.symbol
!= NULL
)
2347 /* A helper function that throws an exception when a symbol was found
2348 in a psymtab but not in a symtab. */
2350 static void ATTRIBUTE_NORETURN
2351 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2352 struct compunit_symtab
*cust
)
2355 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2356 %s may be an inlined function, or may be a template function\n \
2357 (if a template, try specifying an instantiation: %s<type>)."),
2358 block_index
== GLOBAL_BLOCK
? "global" : "static",
2360 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2364 /* A helper function for various lookup routines that interfaces with
2365 the "quick" symbol table functions. */
2367 static struct block_symbol
2368 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2369 enum block_enum block_index
, const char *name
,
2370 const domain_enum domain
)
2372 struct compunit_symtab
*cust
;
2373 const struct blockvector
*bv
;
2374 const struct block
*block
;
2375 struct block_symbol result
;
2380 if (symbol_lookup_debug
> 1)
2382 fprintf_unfiltered (gdb_stdlog
,
2383 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2384 objfile_debug_name (objfile
),
2385 block_index
== GLOBAL_BLOCK
2386 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2387 name
, domain_name (domain
));
2390 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2393 if (symbol_lookup_debug
> 1)
2395 fprintf_unfiltered (gdb_stdlog
,
2396 "lookup_symbol_via_quick_fns (...) = NULL\n");
2401 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2402 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2403 result
.symbol
= block_lookup_symbol (block
, name
,
2404 symbol_name_match_type::FULL
, domain
);
2405 if (result
.symbol
== NULL
)
2406 error_in_psymtab_expansion (block_index
, name
, cust
);
2408 if (symbol_lookup_debug
> 1)
2410 fprintf_unfiltered (gdb_stdlog
,
2411 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2412 host_address_to_string (result
.symbol
),
2413 host_address_to_string (block
));
2416 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2417 result
.block
= block
;
2424 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2426 const struct block
*block
,
2427 const domain_enum domain
)
2429 struct block_symbol result
;
2431 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2432 the current objfile. Searching the current objfile first is useful
2433 for both matching user expectations as well as performance. */
2435 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2436 if (result
.symbol
!= NULL
)
2439 /* If we didn't find a definition for a builtin type in the static block,
2440 search for it now. This is actually the right thing to do and can be
2441 a massive performance win. E.g., when debugging a program with lots of
2442 shared libraries we could search all of them only to find out the
2443 builtin type isn't defined in any of them. This is common for types
2445 if (domain
== VAR_DOMAIN
)
2447 struct gdbarch
*gdbarch
;
2450 gdbarch
= target_gdbarch ();
2452 gdbarch
= block_gdbarch (block
);
2453 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2455 result
.block
= NULL
;
2456 if (result
.symbol
!= NULL
)
2460 return lookup_global_symbol (name
, block
, domain
);
2466 lookup_symbol_in_static_block (const char *name
,
2467 const struct block
*block
,
2468 const domain_enum domain
)
2470 const struct block
*static_block
= block_static_block (block
);
2473 if (static_block
== NULL
)
2476 if (symbol_lookup_debug
)
2478 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2480 fprintf_unfiltered (gdb_stdlog
,
2481 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2484 host_address_to_string (block
),
2485 objfile_debug_name (objfile
),
2486 domain_name (domain
));
2489 sym
= lookup_symbol_in_block (name
,
2490 symbol_name_match_type::FULL
,
2491 static_block
, domain
);
2492 if (symbol_lookup_debug
)
2494 fprintf_unfiltered (gdb_stdlog
,
2495 "lookup_symbol_in_static_block (...) = %s\n",
2496 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2498 return (struct block_symbol
) {sym
, static_block
};
2501 /* Perform the standard symbol lookup of NAME in OBJFILE:
2502 1) First search expanded symtabs, and if not found
2503 2) Search the "quick" symtabs (partial or .gdb_index).
2504 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2506 static struct block_symbol
2507 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2508 const char *name
, const domain_enum domain
)
2510 struct block_symbol result
;
2512 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2514 if (symbol_lookup_debug
)
2516 fprintf_unfiltered (gdb_stdlog
,
2517 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2518 objfile_debug_name (objfile
),
2519 block_index
== GLOBAL_BLOCK
2520 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2521 name
, domain_name (domain
));
2524 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2526 if (result
.symbol
!= NULL
)
2528 if (symbol_lookup_debug
)
2530 fprintf_unfiltered (gdb_stdlog
,
2531 "lookup_symbol_in_objfile (...) = %s"
2533 host_address_to_string (result
.symbol
));
2538 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2540 if (symbol_lookup_debug
)
2542 fprintf_unfiltered (gdb_stdlog
,
2543 "lookup_symbol_in_objfile (...) = %s%s\n",
2544 result
.symbol
!= NULL
2545 ? host_address_to_string (result
.symbol
)
2547 result
.symbol
!= NULL
? " (via quick fns)" : "");
2552 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2554 struct global_or_static_sym_lookup_data
2556 /* The name of the symbol we are searching for. */
2559 /* The domain to use for our search. */
2562 /* The block index in which to search. */
2563 enum block_enum block_index
;
2565 /* The field where the callback should store the symbol if found.
2566 It should be initialized to {NULL, NULL} before the search is started. */
2567 struct block_symbol result
;
2570 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2571 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2572 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2573 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2576 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2579 struct global_or_static_sym_lookup_data
*data
=
2580 (struct global_or_static_sym_lookup_data
*) cb_data
;
2582 gdb_assert (data
->result
.symbol
== NULL
2583 && data
->result
.block
== NULL
);
2585 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2586 data
->name
, data
->domain
);
2588 /* If we found a match, tell the iterator to stop. Otherwise,
2590 return (data
->result
.symbol
!= NULL
);
2593 /* This function contains the common code of lookup_{global,static}_symbol.
2594 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2595 the objfile to start the lookup in. */
2597 static struct block_symbol
2598 lookup_global_or_static_symbol (const char *name
,
2599 enum block_enum block_index
,
2600 struct objfile
*objfile
,
2601 const domain_enum domain
)
2603 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2604 struct block_symbol result
;
2605 struct global_or_static_sym_lookup_data lookup_data
;
2606 struct block_symbol_cache
*bsc
;
2607 struct symbol_cache_slot
*slot
;
2609 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2610 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2612 /* First see if we can find the symbol in the cache.
2613 This works because we use the current objfile to qualify the lookup. */
2614 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2616 if (result
.symbol
!= NULL
)
2618 if (SYMBOL_LOOKUP_FAILED_P (result
))
2623 /* Do a global search (of global blocks, heh). */
2624 if (result
.symbol
== NULL
)
2626 memset (&lookup_data
, 0, sizeof (lookup_data
));
2627 lookup_data
.name
= name
;
2628 lookup_data
.block_index
= block_index
;
2629 lookup_data
.domain
= domain
;
2630 gdbarch_iterate_over_objfiles_in_search_order
2631 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
2632 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2633 result
= lookup_data
.result
;
2636 if (result
.symbol
!= NULL
)
2637 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2639 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2647 lookup_static_symbol (const char *name
, const domain_enum domain
)
2649 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2655 lookup_global_symbol (const char *name
,
2656 const struct block
*block
,
2657 const domain_enum domain
)
2659 /* If a block was passed in, we want to search the corresponding
2660 global block first. This yields "more expected" behavior, and is
2661 needed to support 'FILENAME'::VARIABLE lookups. */
2662 const struct block
*global_block
= block_global_block (block
);
2663 if (global_block
!= nullptr)
2665 symbol
*sym
= lookup_symbol_in_block (name
,
2666 symbol_name_match_type::FULL
,
2667 global_block
, domain
);
2669 return { sym
, global_block
};
2672 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2673 return lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2677 symbol_matches_domain (enum language symbol_language
,
2678 domain_enum symbol_domain
,
2681 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2682 Similarly, any Ada type declaration implicitly defines a typedef. */
2683 if (symbol_language
== language_cplus
2684 || symbol_language
== language_d
2685 || symbol_language
== language_ada
2686 || symbol_language
== language_rust
)
2688 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2689 && symbol_domain
== STRUCT_DOMAIN
)
2692 /* For all other languages, strict match is required. */
2693 return (symbol_domain
== domain
);
2699 lookup_transparent_type (const char *name
)
2701 return current_language
->la_lookup_transparent_type (name
);
2704 /* A helper for basic_lookup_transparent_type that interfaces with the
2705 "quick" symbol table functions. */
2707 static struct type
*
2708 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2709 enum block_enum block_index
,
2712 struct compunit_symtab
*cust
;
2713 const struct blockvector
*bv
;
2714 const struct block
*block
;
2719 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2724 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2725 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2726 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2727 block_find_non_opaque_type
, NULL
);
2729 error_in_psymtab_expansion (block_index
, name
, cust
);
2730 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2731 return SYMBOL_TYPE (sym
);
2734 /* Subroutine of basic_lookup_transparent_type to simplify it.
2735 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2736 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2738 static struct type
*
2739 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2740 enum block_enum block_index
,
2743 const struct blockvector
*bv
;
2744 const struct block
*block
;
2745 const struct symbol
*sym
;
2747 for (compunit_symtab
*cust
: objfile
->compunits ())
2749 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2750 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2751 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2752 block_find_non_opaque_type
, NULL
);
2755 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2756 return SYMBOL_TYPE (sym
);
2763 /* The standard implementation of lookup_transparent_type. This code
2764 was modeled on lookup_symbol -- the parts not relevant to looking
2765 up types were just left out. In particular it's assumed here that
2766 types are available in STRUCT_DOMAIN and only in file-static or
2770 basic_lookup_transparent_type (const char *name
)
2774 /* Now search all the global symbols. Do the symtab's first, then
2775 check the psymtab's. If a psymtab indicates the existence
2776 of the desired name as a global, then do psymtab-to-symtab
2777 conversion on the fly and return the found symbol. */
2779 for (objfile
*objfile
: current_program_space
->objfiles ())
2781 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2786 for (objfile
*objfile
: current_program_space
->objfiles ())
2788 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2793 /* Now search the static file-level symbols.
2794 Not strictly correct, but more useful than an error.
2795 Do the symtab's first, then
2796 check the psymtab's. If a psymtab indicates the existence
2797 of the desired name as a file-level static, then do psymtab-to-symtab
2798 conversion on the fly and return the found symbol. */
2800 for (objfile
*objfile
: current_program_space
->objfiles ())
2802 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2807 for (objfile
*objfile
: current_program_space
->objfiles ())
2809 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2814 return (struct type
*) 0;
2820 iterate_over_symbols (const struct block
*block
,
2821 const lookup_name_info
&name
,
2822 const domain_enum domain
,
2823 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2825 struct block_iterator iter
;
2828 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2830 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2831 SYMBOL_DOMAIN (sym
), domain
))
2833 struct block_symbol block_sym
= {sym
, block
};
2835 if (!callback (&block_sym
))
2845 iterate_over_symbols_terminated
2846 (const struct block
*block
,
2847 const lookup_name_info
&name
,
2848 const domain_enum domain
,
2849 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2851 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2853 struct block_symbol block_sym
= {nullptr, block
};
2854 return callback (&block_sym
);
2857 /* Find the compunit symtab associated with PC and SECTION.
2858 This will read in debug info as necessary. */
2860 struct compunit_symtab
*
2861 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2863 struct compunit_symtab
*best_cust
= NULL
;
2864 CORE_ADDR distance
= 0;
2865 struct bound_minimal_symbol msymbol
;
2867 /* If we know that this is not a text address, return failure. This is
2868 necessary because we loop based on the block's high and low code
2869 addresses, which do not include the data ranges, and because
2870 we call find_pc_sect_psymtab which has a similar restriction based
2871 on the partial_symtab's texthigh and textlow. */
2872 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2873 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2876 /* Search all symtabs for the one whose file contains our address, and which
2877 is the smallest of all the ones containing the address. This is designed
2878 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2879 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2880 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2882 This happens for native ecoff format, where code from included files
2883 gets its own symtab. The symtab for the included file should have
2884 been read in already via the dependency mechanism.
2885 It might be swifter to create several symtabs with the same name
2886 like xcoff does (I'm not sure).
2888 It also happens for objfiles that have their functions reordered.
2889 For these, the symtab we are looking for is not necessarily read in. */
2891 for (objfile
*obj_file
: current_program_space
->objfiles ())
2893 for (compunit_symtab
*cust
: obj_file
->compunits ())
2895 const struct block
*b
;
2896 const struct blockvector
*bv
;
2898 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2899 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2901 if (BLOCK_START (b
) <= pc
2902 && BLOCK_END (b
) > pc
2904 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2906 /* For an objfile that has its functions reordered,
2907 find_pc_psymtab will find the proper partial symbol table
2908 and we simply return its corresponding symtab. */
2909 /* In order to better support objfiles that contain both
2910 stabs and coff debugging info, we continue on if a psymtab
2912 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2914 struct compunit_symtab
*result
;
2917 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2927 struct block_iterator iter
;
2928 struct symbol
*sym
= NULL
;
2930 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2932 fixup_symbol_section (sym
, obj_file
);
2933 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2939 continue; /* No symbol in this symtab matches
2942 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2948 if (best_cust
!= NULL
)
2951 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2953 for (objfile
*objf
: current_program_space
->objfiles ())
2955 struct compunit_symtab
*result
;
2959 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2970 /* Find the compunit symtab associated with PC.
2971 This will read in debug info as necessary.
2972 Backward compatibility, no section. */
2974 struct compunit_symtab
*
2975 find_pc_compunit_symtab (CORE_ADDR pc
)
2977 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2983 find_symbol_at_address (CORE_ADDR address
)
2985 for (objfile
*objfile
: current_program_space
->objfiles ())
2987 if (objfile
->sf
== NULL
2988 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
2991 struct compunit_symtab
*symtab
2992 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
2995 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
2997 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
2999 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3000 struct block_iterator iter
;
3003 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3005 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3006 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3018 /* Find the source file and line number for a given PC value and SECTION.
3019 Return a structure containing a symtab pointer, a line number,
3020 and a pc range for the entire source line.
3021 The value's .pc field is NOT the specified pc.
3022 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3023 use the line that ends there. Otherwise, in that case, the line
3024 that begins there is used. */
3026 /* The big complication here is that a line may start in one file, and end just
3027 before the start of another file. This usually occurs when you #include
3028 code in the middle of a subroutine. To properly find the end of a line's PC
3029 range, we must search all symtabs associated with this compilation unit, and
3030 find the one whose first PC is closer than that of the next line in this
3033 struct symtab_and_line
3034 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3036 struct compunit_symtab
*cust
;
3037 struct linetable
*l
;
3039 struct linetable_entry
*item
;
3040 const struct blockvector
*bv
;
3041 struct bound_minimal_symbol msymbol
;
3043 /* Info on best line seen so far, and where it starts, and its file. */
3045 struct linetable_entry
*best
= NULL
;
3046 CORE_ADDR best_end
= 0;
3047 struct symtab
*best_symtab
= 0;
3049 /* Store here the first line number
3050 of a file which contains the line at the smallest pc after PC.
3051 If we don't find a line whose range contains PC,
3052 we will use a line one less than this,
3053 with a range from the start of that file to the first line's pc. */
3054 struct linetable_entry
*alt
= NULL
;
3056 /* Info on best line seen in this file. */
3058 struct linetable_entry
*prev
;
3060 /* If this pc is not from the current frame,
3061 it is the address of the end of a call instruction.
3062 Quite likely that is the start of the following statement.
3063 But what we want is the statement containing the instruction.
3064 Fudge the pc to make sure we get that. */
3066 /* It's tempting to assume that, if we can't find debugging info for
3067 any function enclosing PC, that we shouldn't search for line
3068 number info, either. However, GAS can emit line number info for
3069 assembly files --- very helpful when debugging hand-written
3070 assembly code. In such a case, we'd have no debug info for the
3071 function, but we would have line info. */
3076 /* elz: added this because this function returned the wrong
3077 information if the pc belongs to a stub (import/export)
3078 to call a shlib function. This stub would be anywhere between
3079 two functions in the target, and the line info was erroneously
3080 taken to be the one of the line before the pc. */
3082 /* RT: Further explanation:
3084 * We have stubs (trampolines) inserted between procedures.
3086 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3087 * exists in the main image.
3089 * In the minimal symbol table, we have a bunch of symbols
3090 * sorted by start address. The stubs are marked as "trampoline",
3091 * the others appear as text. E.g.:
3093 * Minimal symbol table for main image
3094 * main: code for main (text symbol)
3095 * shr1: stub (trampoline symbol)
3096 * foo: code for foo (text symbol)
3098 * Minimal symbol table for "shr1" image:
3100 * shr1: code for shr1 (text symbol)
3103 * So the code below is trying to detect if we are in the stub
3104 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3105 * and if found, do the symbolization from the real-code address
3106 * rather than the stub address.
3108 * Assumptions being made about the minimal symbol table:
3109 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3110 * if we're really in the trampoline.s If we're beyond it (say
3111 * we're in "foo" in the above example), it'll have a closer
3112 * symbol (the "foo" text symbol for example) and will not
3113 * return the trampoline.
3114 * 2. lookup_minimal_symbol_text() will find a real text symbol
3115 * corresponding to the trampoline, and whose address will
3116 * be different than the trampoline address. I put in a sanity
3117 * check for the address being the same, to avoid an
3118 * infinite recursion.
3120 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3121 if (msymbol
.minsym
!= NULL
)
3122 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3124 struct bound_minimal_symbol mfunsym
3125 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3128 if (mfunsym
.minsym
== NULL
)
3129 /* I eliminated this warning since it is coming out
3130 * in the following situation:
3131 * gdb shmain // test program with shared libraries
3132 * (gdb) break shr1 // function in shared lib
3133 * Warning: In stub for ...
3134 * In the above situation, the shared lib is not loaded yet,
3135 * so of course we can't find the real func/line info,
3136 * but the "break" still works, and the warning is annoying.
3137 * So I commented out the warning. RT */
3138 /* warning ("In stub for %s; unable to find real function/line info",
3139 SYMBOL_LINKAGE_NAME (msymbol)); */
3142 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3143 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3144 /* Avoid infinite recursion */
3145 /* See above comment about why warning is commented out. */
3146 /* warning ("In stub for %s; unable to find real function/line info",
3147 SYMBOL_LINKAGE_NAME (msymbol)); */
3151 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3154 symtab_and_line val
;
3155 val
.pspace
= current_program_space
;
3157 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3160 /* If no symbol information, return previous pc. */
3167 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3169 /* Look at all the symtabs that share this blockvector.
3170 They all have the same apriori range, that we found was right;
3171 but they have different line tables. */
3173 for (symtab
*iter_s
: compunit_filetabs (cust
))
3175 /* Find the best line in this symtab. */
3176 l
= SYMTAB_LINETABLE (iter_s
);
3182 /* I think len can be zero if the symtab lacks line numbers
3183 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3184 I'm not sure which, and maybe it depends on the symbol
3190 item
= l
->item
; /* Get first line info. */
3192 /* Is this file's first line closer than the first lines of other files?
3193 If so, record this file, and its first line, as best alternate. */
3194 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3197 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3198 const struct linetable_entry
& lhs
)->bool
3200 return comp_pc
< lhs
.pc
;
3203 struct linetable_entry
*first
= item
;
3204 struct linetable_entry
*last
= item
+ len
;
3205 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3207 prev
= item
- 1; /* Found a matching item. */
3209 /* At this point, prev points at the line whose start addr is <= pc, and
3210 item points at the next line. If we ran off the end of the linetable
3211 (pc >= start of the last line), then prev == item. If pc < start of
3212 the first line, prev will not be set. */
3214 /* Is this file's best line closer than the best in the other files?
3215 If so, record this file, and its best line, as best so far. Don't
3216 save prev if it represents the end of a function (i.e. line number
3217 0) instead of a real line. */
3219 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3222 best_symtab
= iter_s
;
3224 /* Discard BEST_END if it's before the PC of the current BEST. */
3225 if (best_end
<= best
->pc
)
3229 /* If another line (denoted by ITEM) is in the linetable and its
3230 PC is after BEST's PC, but before the current BEST_END, then
3231 use ITEM's PC as the new best_end. */
3232 if (best
&& item
< last
&& item
->pc
> best
->pc
3233 && (best_end
== 0 || best_end
> item
->pc
))
3234 best_end
= item
->pc
;
3239 /* If we didn't find any line number info, just return zeros.
3240 We used to return alt->line - 1 here, but that could be
3241 anywhere; if we don't have line number info for this PC,
3242 don't make some up. */
3245 else if (best
->line
== 0)
3247 /* If our best fit is in a range of PC's for which no line
3248 number info is available (line number is zero) then we didn't
3249 find any valid line information. */
3254 val
.symtab
= best_symtab
;
3255 val
.line
= best
->line
;
3257 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3262 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3264 val
.section
= section
;
3268 /* Backward compatibility (no section). */
3270 struct symtab_and_line
3271 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3273 struct obj_section
*section
;
3275 section
= find_pc_overlay (pc
);
3276 if (pc_in_unmapped_range (pc
, section
))
3277 pc
= overlay_mapped_address (pc
, section
);
3278 return find_pc_sect_line (pc
, section
, notcurrent
);
3284 find_pc_line_symtab (CORE_ADDR pc
)
3286 struct symtab_and_line sal
;
3288 /* This always passes zero for NOTCURRENT to find_pc_line.
3289 There are currently no callers that ever pass non-zero. */
3290 sal
= find_pc_line (pc
, 0);
3294 /* Find line number LINE in any symtab whose name is the same as
3297 If found, return the symtab that contains the linetable in which it was
3298 found, set *INDEX to the index in the linetable of the best entry
3299 found, and set *EXACT_MATCH to true if the value returned is an
3302 If not found, return NULL. */
3305 find_line_symtab (struct symtab
*sym_tab
, int line
,
3306 int *index
, bool *exact_match
)
3308 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3310 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3314 struct linetable
*best_linetable
;
3315 struct symtab
*best_symtab
;
3317 /* First try looking it up in the given symtab. */
3318 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3319 best_symtab
= sym_tab
;
3320 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3321 if (best_index
< 0 || !exact
)
3323 /* Didn't find an exact match. So we better keep looking for
3324 another symtab with the same name. In the case of xcoff,
3325 multiple csects for one source file (produced by IBM's FORTRAN
3326 compiler) produce multiple symtabs (this is unavoidable
3327 assuming csects can be at arbitrary places in memory and that
3328 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3330 /* BEST is the smallest linenumber > LINE so far seen,
3331 or 0 if none has been seen so far.
3332 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3335 if (best_index
>= 0)
3336 best
= best_linetable
->item
[best_index
].line
;
3340 for (objfile
*objfile
: current_program_space
->objfiles ())
3343 objfile
->sf
->qf
->expand_symtabs_with_fullname
3344 (objfile
, symtab_to_fullname (sym_tab
));
3347 for (objfile
*objfile
: current_program_space
->objfiles ())
3349 for (compunit_symtab
*cu
: objfile
->compunits ())
3351 for (symtab
*s
: compunit_filetabs (cu
))
3353 struct linetable
*l
;
3356 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3358 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3359 symtab_to_fullname (s
)) != 0)
3361 l
= SYMTAB_LINETABLE (s
);
3362 ind
= find_line_common (l
, line
, &exact
, 0);
3372 if (best
== 0 || l
->item
[ind
].line
< best
)
3374 best
= l
->item
[ind
].line
;
3389 *index
= best_index
;
3391 *exact_match
= (exact
!= 0);
3396 /* Given SYMTAB, returns all the PCs function in the symtab that
3397 exactly match LINE. Returns an empty vector if there are no exact
3398 matches, but updates BEST_ITEM in this case. */
3400 std::vector
<CORE_ADDR
>
3401 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3402 struct linetable_entry
**best_item
)
3405 std::vector
<CORE_ADDR
> result
;
3407 /* First, collect all the PCs that are at this line. */
3413 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3420 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3422 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
3428 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3436 /* Set the PC value for a given source file and line number and return true.
3437 Returns false for invalid line number (and sets the PC to 0).
3438 The source file is specified with a struct symtab. */
3441 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3443 struct linetable
*l
;
3450 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3453 l
= SYMTAB_LINETABLE (symtab
);
3454 *pc
= l
->item
[ind
].pc
;
3461 /* Find the range of pc values in a line.
3462 Store the starting pc of the line into *STARTPTR
3463 and the ending pc (start of next line) into *ENDPTR.
3464 Returns true to indicate success.
3465 Returns false if could not find the specified line. */
3468 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3471 CORE_ADDR startaddr
;
3472 struct symtab_and_line found_sal
;
3475 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3478 /* This whole function is based on address. For example, if line 10 has
3479 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3480 "info line *0x123" should say the line goes from 0x100 to 0x200
3481 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3482 This also insures that we never give a range like "starts at 0x134
3483 and ends at 0x12c". */
3485 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3486 if (found_sal
.line
!= sal
.line
)
3488 /* The specified line (sal) has zero bytes. */
3489 *startptr
= found_sal
.pc
;
3490 *endptr
= found_sal
.pc
;
3494 *startptr
= found_sal
.pc
;
3495 *endptr
= found_sal
.end
;
3500 /* Given a line table and a line number, return the index into the line
3501 table for the pc of the nearest line whose number is >= the specified one.
3502 Return -1 if none is found. The value is >= 0 if it is an index.
3503 START is the index at which to start searching the line table.
3505 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3508 find_line_common (struct linetable
*l
, int lineno
,
3509 int *exact_match
, int start
)
3514 /* BEST is the smallest linenumber > LINENO so far seen,
3515 or 0 if none has been seen so far.
3516 BEST_INDEX identifies the item for it. */
3518 int best_index
= -1;
3529 for (i
= start
; i
< len
; i
++)
3531 struct linetable_entry
*item
= &(l
->item
[i
]);
3533 if (item
->line
== lineno
)
3535 /* Return the first (lowest address) entry which matches. */
3540 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3547 /* If we got here, we didn't get an exact match. */
3552 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3554 struct symtab_and_line sal
;
3556 sal
= find_pc_line (pc
, 0);
3559 return sal
.symtab
!= 0;
3562 /* Helper for find_function_start_sal. Does most of the work, except
3563 setting the sal's symbol. */
3565 static symtab_and_line
3566 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3569 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3571 if (funfirstline
&& sal
.symtab
!= NULL
3572 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3573 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3575 struct gdbarch
*gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (sal
.symtab
));
3578 if (gdbarch_skip_entrypoint_p (gdbarch
))
3579 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3583 /* We always should have a line for the function start address.
3584 If we don't, something is odd. Create a plain SAL referring
3585 just the PC and hope that skip_prologue_sal (if requested)
3586 can find a line number for after the prologue. */
3587 if (sal
.pc
< func_addr
)
3590 sal
.pspace
= current_program_space
;
3592 sal
.section
= section
;
3596 skip_prologue_sal (&sal
);
3604 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3608 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3610 /* find_function_start_sal_1 does a linetable search, so it finds
3611 the symtab and linenumber, but not a symbol. Fill in the
3612 function symbol too. */
3613 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3621 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3623 fixup_symbol_section (sym
, NULL
);
3625 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3626 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3633 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3634 address for that function that has an entry in SYMTAB's line info
3635 table. If such an entry cannot be found, return FUNC_ADDR
3639 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3641 CORE_ADDR func_start
, func_end
;
3642 struct linetable
*l
;
3645 /* Give up if this symbol has no lineinfo table. */
3646 l
= SYMTAB_LINETABLE (symtab
);
3650 /* Get the range for the function's PC values, or give up if we
3651 cannot, for some reason. */
3652 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3655 /* Linetable entries are ordered by PC values, see the commentary in
3656 symtab.h where `struct linetable' is defined. Thus, the first
3657 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3658 address we are looking for. */
3659 for (i
= 0; i
< l
->nitems
; i
++)
3661 struct linetable_entry
*item
= &(l
->item
[i
]);
3663 /* Don't use line numbers of zero, they mark special entries in
3664 the table. See the commentary on symtab.h before the
3665 definition of struct linetable. */
3666 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3673 /* Adjust SAL to the first instruction past the function prologue.
3674 If the PC was explicitly specified, the SAL is not changed.
3675 If the line number was explicitly specified then the SAL can still be
3676 updated, unless the language for SAL is assembler, in which case the SAL
3677 will be left unchanged.
3678 If SAL is already past the prologue, then do nothing. */
3681 skip_prologue_sal (struct symtab_and_line
*sal
)
3684 struct symtab_and_line start_sal
;
3685 CORE_ADDR pc
, saved_pc
;
3686 struct obj_section
*section
;
3688 struct objfile
*objfile
;
3689 struct gdbarch
*gdbarch
;
3690 const struct block
*b
, *function_block
;
3691 int force_skip
, skip
;
3693 /* Do not change the SAL if PC was specified explicitly. */
3694 if (sal
->explicit_pc
)
3697 /* In assembly code, if the user asks for a specific line then we should
3698 not adjust the SAL. The user already has instruction level
3699 visibility in this case, so selecting a line other than one requested
3700 is likely to be the wrong choice. */
3701 if (sal
->symtab
!= nullptr
3702 && sal
->explicit_line
3703 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3706 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3708 switch_to_program_space_and_thread (sal
->pspace
);
3710 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3713 fixup_symbol_section (sym
, NULL
);
3715 objfile
= symbol_objfile (sym
);
3716 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3717 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3718 name
= SYMBOL_LINKAGE_NAME (sym
);
3722 struct bound_minimal_symbol msymbol
3723 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3725 if (msymbol
.minsym
== NULL
)
3728 objfile
= msymbol
.objfile
;
3729 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3730 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3731 name
= msymbol
.minsym
->linkage_name ();
3734 gdbarch
= get_objfile_arch (objfile
);
3736 /* Process the prologue in two passes. In the first pass try to skip the
3737 prologue (SKIP is true) and verify there is a real need for it (indicated
3738 by FORCE_SKIP). If no such reason was found run a second pass where the
3739 prologue is not skipped (SKIP is false). */
3744 /* Be conservative - allow direct PC (without skipping prologue) only if we
3745 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3746 have to be set by the caller so we use SYM instead. */
3748 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3756 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3757 so that gdbarch_skip_prologue has something unique to work on. */
3758 if (section_is_overlay (section
) && !section_is_mapped (section
))
3759 pc
= overlay_unmapped_address (pc
, section
);
3761 /* Skip "first line" of function (which is actually its prologue). */
3762 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3763 if (gdbarch_skip_entrypoint_p (gdbarch
))
3764 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3766 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3768 /* For overlays, map pc back into its mapped VMA range. */
3769 pc
= overlay_mapped_address (pc
, section
);
3771 /* Calculate line number. */
3772 start_sal
= find_pc_sect_line (pc
, section
, 0);
3774 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3775 line is still part of the same function. */
3776 if (skip
&& start_sal
.pc
!= pc
3777 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3778 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3779 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3780 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3782 /* First pc of next line */
3784 /* Recalculate the line number (might not be N+1). */
3785 start_sal
= find_pc_sect_line (pc
, section
, 0);
3788 /* On targets with executable formats that don't have a concept of
3789 constructors (ELF with .init has, PE doesn't), gcc emits a call
3790 to `__main' in `main' between the prologue and before user
3792 if (gdbarch_skip_main_prologue_p (gdbarch
)
3793 && name
&& strcmp_iw (name
, "main") == 0)
3795 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3796 /* Recalculate the line number (might not be N+1). */
3797 start_sal
= find_pc_sect_line (pc
, section
, 0);
3801 while (!force_skip
&& skip
--);
3803 /* If we still don't have a valid source line, try to find the first
3804 PC in the lineinfo table that belongs to the same function. This
3805 happens with COFF debug info, which does not seem to have an
3806 entry in lineinfo table for the code after the prologue which has
3807 no direct relation to source. For example, this was found to be
3808 the case with the DJGPP target using "gcc -gcoff" when the
3809 compiler inserted code after the prologue to make sure the stack
3811 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3813 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3814 /* Recalculate the line number. */
3815 start_sal
= find_pc_sect_line (pc
, section
, 0);
3818 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3819 forward SAL to the end of the prologue. */
3824 sal
->section
= section
;
3825 sal
->symtab
= start_sal
.symtab
;
3826 sal
->line
= start_sal
.line
;
3827 sal
->end
= start_sal
.end
;
3829 /* Check if we are now inside an inlined function. If we can,
3830 use the call site of the function instead. */
3831 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3832 function_block
= NULL
;
3835 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3837 else if (BLOCK_FUNCTION (b
) != NULL
)
3839 b
= BLOCK_SUPERBLOCK (b
);
3841 if (function_block
!= NULL
3842 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3844 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3845 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3849 /* Given PC at the function's start address, attempt to find the
3850 prologue end using SAL information. Return zero if the skip fails.
3852 A non-optimized prologue traditionally has one SAL for the function
3853 and a second for the function body. A single line function has
3854 them both pointing at the same line.
3856 An optimized prologue is similar but the prologue may contain
3857 instructions (SALs) from the instruction body. Need to skip those
3858 while not getting into the function body.
3860 The functions end point and an increasing SAL line are used as
3861 indicators of the prologue's endpoint.
3863 This code is based on the function refine_prologue_limit
3867 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3869 struct symtab_and_line prologue_sal
;
3872 const struct block
*bl
;
3874 /* Get an initial range for the function. */
3875 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3876 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3878 prologue_sal
= find_pc_line (start_pc
, 0);
3879 if (prologue_sal
.line
!= 0)
3881 /* For languages other than assembly, treat two consecutive line
3882 entries at the same address as a zero-instruction prologue.
3883 The GNU assembler emits separate line notes for each instruction
3884 in a multi-instruction macro, but compilers generally will not
3886 if (prologue_sal
.symtab
->language
!= language_asm
)
3888 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3891 /* Skip any earlier lines, and any end-of-sequence marker
3892 from a previous function. */
3893 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3894 || linetable
->item
[idx
].line
== 0)
3897 if (idx
+1 < linetable
->nitems
3898 && linetable
->item
[idx
+1].line
!= 0
3899 && linetable
->item
[idx
+1].pc
== start_pc
)
3903 /* If there is only one sal that covers the entire function,
3904 then it is probably a single line function, like
3906 if (prologue_sal
.end
>= end_pc
)
3909 while (prologue_sal
.end
< end_pc
)
3911 struct symtab_and_line sal
;
3913 sal
= find_pc_line (prologue_sal
.end
, 0);
3916 /* Assume that a consecutive SAL for the same (or larger)
3917 line mark the prologue -> body transition. */
3918 if (sal
.line
>= prologue_sal
.line
)
3920 /* Likewise if we are in a different symtab altogether
3921 (e.g. within a file included via #include). */
3922 if (sal
.symtab
!= prologue_sal
.symtab
)
3925 /* The line number is smaller. Check that it's from the
3926 same function, not something inlined. If it's inlined,
3927 then there is no point comparing the line numbers. */
3928 bl
= block_for_pc (prologue_sal
.end
);
3931 if (block_inlined_p (bl
))
3933 if (BLOCK_FUNCTION (bl
))
3938 bl
= BLOCK_SUPERBLOCK (bl
);
3943 /* The case in which compiler's optimizer/scheduler has
3944 moved instructions into the prologue. We look ahead in
3945 the function looking for address ranges whose
3946 corresponding line number is less the first one that we
3947 found for the function. This is more conservative then
3948 refine_prologue_limit which scans a large number of SALs
3949 looking for any in the prologue. */
3954 if (prologue_sal
.end
< end_pc
)
3955 /* Return the end of this line, or zero if we could not find a
3957 return prologue_sal
.end
;
3959 /* Don't return END_PC, which is past the end of the function. */
3960 return prologue_sal
.pc
;
3966 find_function_alias_target (bound_minimal_symbol msymbol
)
3968 CORE_ADDR func_addr
;
3969 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
3972 symbol
*sym
= find_pc_function (func_addr
);
3974 && SYMBOL_CLASS (sym
) == LOC_BLOCK
3975 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
3982 /* If P is of the form "operator[ \t]+..." where `...' is
3983 some legitimate operator text, return a pointer to the
3984 beginning of the substring of the operator text.
3985 Otherwise, return "". */
3988 operator_chars (const char *p
, const char **end
)
3991 if (!startswith (p
, CP_OPERATOR_STR
))
3993 p
+= CP_OPERATOR_LEN
;
3995 /* Don't get faked out by `operator' being part of a longer
3997 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4000 /* Allow some whitespace between `operator' and the operator symbol. */
4001 while (*p
== ' ' || *p
== '\t')
4004 /* Recognize 'operator TYPENAME'. */
4006 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4008 const char *q
= p
+ 1;
4010 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4019 case '\\': /* regexp quoting */
4022 if (p
[2] == '=') /* 'operator\*=' */
4024 else /* 'operator\*' */
4028 else if (p
[1] == '[')
4031 error (_("mismatched quoting on brackets, "
4032 "try 'operator\\[\\]'"));
4033 else if (p
[2] == '\\' && p
[3] == ']')
4035 *end
= p
+ 4; /* 'operator\[\]' */
4039 error (_("nothing is allowed between '[' and ']'"));
4043 /* Gratuitous quote: skip it and move on. */
4065 if (p
[0] == '-' && p
[1] == '>')
4067 /* Struct pointer member operator 'operator->'. */
4070 *end
= p
+ 3; /* 'operator->*' */
4073 else if (p
[2] == '\\')
4075 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4080 *end
= p
+ 2; /* 'operator->' */
4084 if (p
[1] == '=' || p
[1] == p
[0])
4095 error (_("`operator ()' must be specified "
4096 "without whitespace in `()'"));
4101 error (_("`operator ?:' must be specified "
4102 "without whitespace in `?:'"));
4107 error (_("`operator []' must be specified "
4108 "without whitespace in `[]'"));
4112 error (_("`operator %s' not supported"), p
);
4121 /* What part to match in a file name. */
4123 struct filename_partial_match_opts
4125 /* Only match the directory name part. */
4126 bool dirname
= false;
4128 /* Only match the basename part. */
4129 bool basename
= false;
4132 /* Data structure to maintain printing state for output_source_filename. */
4134 struct output_source_filename_data
4136 /* Output only filenames matching REGEXP. */
4138 gdb::optional
<compiled_regex
> c_regexp
;
4139 /* Possibly only match a part of the filename. */
4140 filename_partial_match_opts partial_match
;
4143 /* Cache of what we've seen so far. */
4144 struct filename_seen_cache
*filename_seen_cache
;
4146 /* Flag of whether we're printing the first one. */
4150 /* Slave routine for sources_info. Force line breaks at ,'s.
4151 NAME is the name to print.
4152 DATA contains the state for printing and watching for duplicates. */
4155 output_source_filename (const char *name
,
4156 struct output_source_filename_data
*data
)
4158 /* Since a single source file can result in several partial symbol
4159 tables, we need to avoid printing it more than once. Note: if
4160 some of the psymtabs are read in and some are not, it gets
4161 printed both under "Source files for which symbols have been
4162 read" and "Source files for which symbols will be read in on
4163 demand". I consider this a reasonable way to deal with the
4164 situation. I'm not sure whether this can also happen for
4165 symtabs; it doesn't hurt to check. */
4167 /* Was NAME already seen? */
4168 if (data
->filename_seen_cache
->seen (name
))
4170 /* Yes; don't print it again. */
4174 /* Does it match data->regexp? */
4175 if (data
->c_regexp
.has_value ())
4177 const char *to_match
;
4178 std::string dirname
;
4180 if (data
->partial_match
.dirname
)
4182 dirname
= ldirname (name
);
4183 to_match
= dirname
.c_str ();
4185 else if (data
->partial_match
.basename
)
4186 to_match
= lbasename (name
);
4190 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4194 /* Print it and reset *FIRST. */
4196 printf_filtered (", ");
4200 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4203 /* A callback for map_partial_symbol_filenames. */
4206 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4209 output_source_filename (fullname
? fullname
: filename
,
4210 (struct output_source_filename_data
*) data
);
4213 using isrc_flag_option_def
4214 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4216 static const gdb::option::option_def info_sources_option_defs
[] = {
4218 isrc_flag_option_def
{
4220 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4221 N_("Show only the files having a dirname matching REGEXP."),
4224 isrc_flag_option_def
{
4226 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4227 N_("Show only the files having a basename matching REGEXP."),
4232 /* Create an option_def_group for the "info sources" options, with
4233 ISRC_OPTS as context. */
4235 static inline gdb::option::option_def_group
4236 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4238 return {{info_sources_option_defs
}, isrc_opts
};
4241 /* Prints the header message for the source files that will be printed
4242 with the matching info present in DATA. SYMBOL_MSG is a message
4243 that tells what will or has been done with the symbols of the
4244 matching source files. */
4247 print_info_sources_header (const char *symbol_msg
,
4248 const struct output_source_filename_data
*data
)
4250 puts_filtered (symbol_msg
);
4251 if (!data
->regexp
.empty ())
4253 if (data
->partial_match
.dirname
)
4254 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4255 data
->regexp
.c_str ());
4256 else if (data
->partial_match
.basename
)
4257 printf_filtered (_("(basename matching regular expression \"%s\")"),
4258 data
->regexp
.c_str ());
4260 printf_filtered (_("(filename matching regular expression \"%s\")"),
4261 data
->regexp
.c_str ());
4263 puts_filtered ("\n");
4266 /* Completer for "info sources". */
4269 info_sources_command_completer (cmd_list_element
*ignore
,
4270 completion_tracker
&tracker
,
4271 const char *text
, const char *word
)
4273 const auto group
= make_info_sources_options_def_group (nullptr);
4274 if (gdb::option::complete_options
4275 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4280 info_sources_command (const char *args
, int from_tty
)
4282 struct output_source_filename_data data
;
4284 if (!have_full_symbols () && !have_partial_symbols ())
4286 error (_("No symbol table is loaded. Use the \"file\" command."));
4289 filename_seen_cache filenames_seen
;
4291 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4293 gdb::option::process_options
4294 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4296 if (args
!= NULL
&& *args
!= '\000')
4299 data
.filename_seen_cache
= &filenames_seen
;
4302 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4303 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4304 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4305 && data
.regexp
.empty ())
4306 error (_("Missing REGEXP for 'info sources'."));
4308 if (data
.regexp
.empty ())
4309 data
.c_regexp
.reset ();
4312 int cflags
= REG_NOSUB
;
4313 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4314 cflags
|= REG_ICASE
;
4316 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4317 _("Invalid regexp"));
4320 print_info_sources_header
4321 (_("Source files for which symbols have been read in:\n"), &data
);
4323 for (objfile
*objfile
: current_program_space
->objfiles ())
4325 for (compunit_symtab
*cu
: objfile
->compunits ())
4327 for (symtab
*s
: compunit_filetabs (cu
))
4329 const char *fullname
= symtab_to_fullname (s
);
4331 output_source_filename (fullname
, &data
);
4335 printf_filtered ("\n\n");
4337 print_info_sources_header
4338 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4340 filenames_seen
.clear ();
4342 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4343 1 /*need_fullname*/);
4344 printf_filtered ("\n");
4347 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
4348 non-zero compare only lbasename of FILES. */
4351 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
4355 if (file
!= NULL
&& nfiles
!= 0)
4357 for (i
= 0; i
< nfiles
; i
++)
4359 if (compare_filenames_for_search (file
, (basenames
4360 ? lbasename (files
[i
])
4365 else if (nfiles
== 0)
4370 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
4371 sort symbols, not minimal symbols. */
4374 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4375 const symbol_search
&sym_b
)
4379 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4380 symbol_symtab (sym_b
.symbol
)->filename
);
4384 if (sym_a
.block
!= sym_b
.block
)
4385 return sym_a
.block
- sym_b
.block
;
4387 return strcmp (SYMBOL_PRINT_NAME (sym_a
.symbol
),
4388 SYMBOL_PRINT_NAME (sym_b
.symbol
));
4391 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4392 If SYM has no symbol_type or symbol_name, returns false. */
4395 treg_matches_sym_type_name (const compiled_regex
&treg
,
4396 const struct symbol
*sym
)
4398 struct type
*sym_type
;
4399 std::string printed_sym_type_name
;
4401 if (symbol_lookup_debug
> 1)
4403 fprintf_unfiltered (gdb_stdlog
,
4404 "treg_matches_sym_type_name\n sym %s\n",
4405 SYMBOL_NATURAL_NAME (sym
));
4408 sym_type
= SYMBOL_TYPE (sym
);
4409 if (sym_type
== NULL
)
4413 scoped_switch_to_sym_language_if_auto
l (sym
);
4415 printed_sym_type_name
= type_to_string (sym_type
);
4419 if (symbol_lookup_debug
> 1)
4421 fprintf_unfiltered (gdb_stdlog
,
4422 " sym_type_name %s\n",
4423 printed_sym_type_name
.c_str ());
4427 if (printed_sym_type_name
.empty ())
4430 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4434 /* Sort the symbols in RESULT and remove duplicates. */
4437 sort_search_symbols_remove_dups (std::vector
<symbol_search
> *result
)
4439 std::sort (result
->begin (), result
->end ());
4440 result
->erase (std::unique (result
->begin (), result
->end ()),
4444 /* Search the symbol table for matches to the regular expression REGEXP,
4445 returning the results.
4447 Only symbols of KIND are searched:
4448 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
4449 and constants (enums).
4450 if T_REGEXP is not NULL, only returns var that have
4451 a type matching regular expression T_REGEXP.
4452 FUNCTIONS_DOMAIN - search all functions
4453 TYPES_DOMAIN - search all type names
4454 ALL_DOMAIN - an internal error for this function
4456 Within each file the results are sorted locally; each symtab's global and
4457 static blocks are separately alphabetized.
4458 Duplicate entries are removed.
4460 When EXCLUDE_MINSYMS is false then matching minsyms are also returned,
4461 otherwise they are excluded. */
4463 std::vector
<symbol_search
>
4464 search_symbols (const char *regexp
, enum search_domain kind
,
4465 const char *t_regexp
,
4466 int nfiles
, const char *files
[],
4467 bool exclude_minsyms
)
4469 const struct blockvector
*bv
;
4470 const struct block
*b
;
4472 struct block_iterator iter
;
4475 static const enum minimal_symbol_type types
[]
4476 = {mst_data
, mst_text
, mst_unknown
};
4477 static const enum minimal_symbol_type types2
[]
4478 = {mst_bss
, mst_file_text
, mst_unknown
};
4479 static const enum minimal_symbol_type types3
[]
4480 = {mst_file_data
, mst_solib_trampoline
, mst_unknown
};
4481 static const enum minimal_symbol_type types4
[]
4482 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_unknown
};
4483 enum minimal_symbol_type ourtype
;
4484 enum minimal_symbol_type ourtype2
;
4485 enum minimal_symbol_type ourtype3
;
4486 enum minimal_symbol_type ourtype4
;
4487 std::vector
<symbol_search
> result
;
4488 gdb::optional
<compiled_regex
> preg
;
4489 gdb::optional
<compiled_regex
> treg
;
4491 gdb_assert (kind
!= ALL_DOMAIN
);
4493 ourtype
= types
[kind
];
4494 ourtype2
= types2
[kind
];
4495 ourtype3
= types3
[kind
];
4496 ourtype4
= types4
[kind
];
4500 /* Make sure spacing is right for C++ operators.
4501 This is just a courtesy to make the matching less sensitive
4502 to how many spaces the user leaves between 'operator'
4503 and <TYPENAME> or <OPERATOR>. */
4505 const char *opname
= operator_chars (regexp
, &opend
);
4509 int fix
= -1; /* -1 means ok; otherwise number of
4512 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4514 /* There should 1 space between 'operator' and 'TYPENAME'. */
4515 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4520 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4521 if (opname
[-1] == ' ')
4524 /* If wrong number of spaces, fix it. */
4527 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4529 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4534 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4536 preg
.emplace (regexp
, cflags
, _("Invalid regexp"));
4539 if (t_regexp
!= NULL
)
4541 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4543 treg
.emplace (t_regexp
, cflags
, _("Invalid regexp"));
4546 /* Search through the partial symtabs *first* for all symbols
4547 matching the regexp. That way we don't have to reproduce all of
4548 the machinery below. */
4549 expand_symtabs_matching ([&] (const char *filename
, bool basenames
)
4551 return file_matches (filename
, files
, nfiles
,
4554 lookup_name_info::match_any (),
4555 [&] (const char *symname
)
4557 return (!preg
.has_value ()
4558 || preg
->exec (symname
,
4564 /* Here, we search through the minimal symbol tables for functions
4565 and variables that match, and force their symbols to be read.
4566 This is in particular necessary for demangled variable names,
4567 which are no longer put into the partial symbol tables.
4568 The symbol will then be found during the scan of symtabs below.
4570 For functions, find_pc_symtab should succeed if we have debug info
4571 for the function, for variables we have to call
4572 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
4574 If the lookup fails, set found_misc so that we will rescan to print
4575 any matching symbols without debug info.
4576 We only search the objfile the msymbol came from, we no longer search
4577 all objfiles. In large programs (1000s of shared libs) searching all
4578 objfiles is not worth the pain. */
4580 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4582 for (objfile
*objfile
: current_program_space
->objfiles ())
4584 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4588 if (msymbol
->created_by_gdb
)
4591 if (MSYMBOL_TYPE (msymbol
) == ourtype
4592 || MSYMBOL_TYPE (msymbol
) == ourtype2
4593 || MSYMBOL_TYPE (msymbol
) == ourtype3
4594 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4596 if (!preg
.has_value ()
4597 || preg
->exec (msymbol
->natural_name (), 0,
4600 /* Note: An important side-effect of these
4601 lookup functions is to expand the symbol
4602 table if msymbol is found, for the benefit of
4603 the next loop on compunits. */
4604 if (kind
== FUNCTIONS_DOMAIN
4605 ? (find_pc_compunit_symtab
4606 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4608 : (lookup_symbol_in_objfile_from_linkage_name
4609 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4618 for (objfile
*objfile
: current_program_space
->objfiles ())
4620 for (compunit_symtab
*cust
: objfile
->compunits ())
4622 bv
= COMPUNIT_BLOCKVECTOR (cust
);
4623 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
4625 b
= BLOCKVECTOR_BLOCK (bv
, i
);
4626 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4628 struct symtab
*real_symtab
= symbol_symtab (sym
);
4632 /* Check first sole REAL_SYMTAB->FILENAME. It does
4633 not need to be a substring of symtab_to_fullname as
4634 it may contain "./" etc. */
4635 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
4636 || ((basenames_may_differ
4637 || file_matches (lbasename (real_symtab
->filename
),
4639 && file_matches (symtab_to_fullname (real_symtab
),
4641 && ((!preg
.has_value ()
4642 || preg
->exec (SYMBOL_NATURAL_NAME (sym
), 0,
4644 && ((kind
== VARIABLES_DOMAIN
4645 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4646 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4647 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4648 /* LOC_CONST can be used for more than
4649 just enums, e.g., c++ static const
4650 members. We only want to skip enums
4652 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4653 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4655 && (!treg
.has_value ()
4656 || treg_matches_sym_type_name (*treg
, sym
)))
4657 || (kind
== FUNCTIONS_DOMAIN
4658 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4659 && (!treg
.has_value ()
4660 || treg_matches_sym_type_name (*treg
,
4662 || (kind
== TYPES_DOMAIN
4663 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4664 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4665 || (kind
== MODULES_DOMAIN
4666 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4667 && SYMBOL_LINE (sym
) != 0))))
4670 result
.emplace_back (i
, sym
);
4677 if (!result
.empty ())
4678 sort_search_symbols_remove_dups (&result
);
4680 /* If there are no eyes, avoid all contact. I mean, if there are
4681 no debug symbols, then add matching minsyms. But if the user wants
4682 to see symbols matching a type regexp, then never give a minimal symbol,
4683 as we assume that a minimal symbol does not have a type. */
4685 if ((found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
4687 && !treg
.has_value ())
4689 for (objfile
*objfile
: current_program_space
->objfiles ())
4691 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4695 if (msymbol
->created_by_gdb
)
4698 if (MSYMBOL_TYPE (msymbol
) == ourtype
4699 || MSYMBOL_TYPE (msymbol
) == ourtype2
4700 || MSYMBOL_TYPE (msymbol
) == ourtype3
4701 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4703 if (!preg
.has_value ()
4704 || preg
->exec (msymbol
->natural_name (), 0,
4707 /* For functions we can do a quick check of whether the
4708 symbol might be found via find_pc_symtab. */
4709 if (kind
!= FUNCTIONS_DOMAIN
4710 || (find_pc_compunit_symtab
4711 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4714 if (lookup_symbol_in_objfile_from_linkage_name
4715 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4719 result
.emplace_back (i
, msymbol
, objfile
);
4731 /* Helper function for symtab_symbol_info, this function uses
4732 the data returned from search_symbols() to print information
4733 regarding the match to gdb_stdout. If LAST is not NULL,
4734 print file and line number information for the symbol as
4735 well. Skip printing the filename if it matches LAST. */
4738 print_symbol_info (enum search_domain kind
,
4740 int block
, const char *last
)
4742 scoped_switch_to_sym_language_if_auto
l (sym
);
4743 struct symtab
*s
= symbol_symtab (sym
);
4747 const char *s_filename
= symtab_to_filename_for_display (s
);
4749 if (filename_cmp (last
, s_filename
) != 0)
4751 printf_filtered (_("\nFile %ps:\n"),
4752 styled_string (file_name_style
.style (),
4756 if (SYMBOL_LINE (sym
) != 0)
4757 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4759 puts_filtered ("\t");
4762 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4763 printf_filtered ("static ");
4765 /* Typedef that is not a C++ class. */
4766 if (kind
== TYPES_DOMAIN
4767 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4769 /* FIXME: For C (and C++) we end up with a difference in output here
4770 between how a typedef is printed, and non-typedefs are printed.
4771 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4772 appear C-like, while TYPE_PRINT doesn't.
4774 For the struct printing case below, things are worse, we force
4775 printing of the ";" in this function, which is going to be wrong
4776 for languages that don't require a ";" between statements. */
4777 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4778 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
4780 type_print (SYMBOL_TYPE (sym
), "", gdb_stdout
, -1);
4781 printf_filtered ("\n");
4783 /* variable, func, or typedef-that-is-c++-class. */
4784 else if (kind
< TYPES_DOMAIN
4785 || (kind
== TYPES_DOMAIN
4786 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4788 type_print (SYMBOL_TYPE (sym
),
4789 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4790 ? "" : SYMBOL_PRINT_NAME (sym
)),
4793 printf_filtered (";\n");
4795 /* Printing of modules is currently done here, maybe at some future
4796 point we might want a language specific method to print the module
4797 symbol so that we can customise the output more. */
4798 else if (kind
== MODULES_DOMAIN
)
4799 printf_filtered ("%s\n", SYMBOL_PRINT_NAME (sym
));
4802 /* This help function for symtab_symbol_info() prints information
4803 for non-debugging symbols to gdb_stdout. */
4806 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4808 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
4811 if (gdbarch_addr_bit (gdbarch
) <= 32)
4812 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4813 & (CORE_ADDR
) 0xffffffff,
4816 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4819 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4820 ? function_name_style
.style ()
4821 : ui_file_style ());
4823 printf_filtered (_("%ps %ps\n"),
4824 styled_string (address_style
.style (), tmp
),
4825 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4828 /* This is the guts of the commands "info functions", "info types", and
4829 "info variables". It calls search_symbols to find all matches and then
4830 print_[m]symbol_info to print out some useful information about the
4834 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4835 const char *regexp
, enum search_domain kind
,
4836 const char *t_regexp
, int from_tty
)
4838 static const char * const classnames
[] =
4839 {"variable", "function", "type", "module"};
4840 const char *last_filename
= "";
4843 gdb_assert (kind
!= ALL_DOMAIN
);
4845 if (regexp
!= nullptr && *regexp
== '\0')
4848 /* Must make sure that if we're interrupted, symbols gets freed. */
4849 std::vector
<symbol_search
> symbols
= search_symbols (regexp
, kind
,
4857 if (t_regexp
!= NULL
)
4859 (_("All %ss matching regular expression \"%s\""
4860 " with type matching regular expression \"%s\":\n"),
4861 classnames
[kind
], regexp
, t_regexp
);
4863 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4864 classnames
[kind
], regexp
);
4868 if (t_regexp
!= NULL
)
4870 (_("All defined %ss"
4871 " with type matching regular expression \"%s\" :\n"),
4872 classnames
[kind
], t_regexp
);
4874 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4878 for (const symbol_search
&p
: symbols
)
4882 if (p
.msymbol
.minsym
!= NULL
)
4887 printf_filtered (_("\nNon-debugging symbols:\n"));
4890 print_msymbol_info (p
.msymbol
);
4894 print_symbol_info (kind
,
4899 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
4904 /* Structure to hold the values of the options used by the 'info variables'
4905 and 'info functions' commands. These correspond to the -q, -t, and -n
4908 struct info_print_options
4911 bool exclude_minsyms
= false;
4912 char *type_regexp
= nullptr;
4914 ~info_print_options ()
4916 xfree (type_regexp
);
4920 /* The options used by the 'info variables' and 'info functions'
4923 static const gdb::option::option_def info_print_options_defs
[] = {
4924 gdb::option::boolean_option_def
<info_print_options
> {
4926 [] (info_print_options
*opt
) { return &opt
->quiet
; },
4927 nullptr, /* show_cmd_cb */
4928 nullptr /* set_doc */
4931 gdb::option::boolean_option_def
<info_print_options
> {
4933 [] (info_print_options
*opt
) { return &opt
->exclude_minsyms
; },
4934 nullptr, /* show_cmd_cb */
4935 nullptr /* set_doc */
4938 gdb::option::string_option_def
<info_print_options
> {
4940 [] (info_print_options
*opt
) { return &opt
->type_regexp
; },
4941 nullptr, /* show_cmd_cb */
4942 nullptr /* set_doc */
4946 /* Returns the option group used by 'info variables' and 'info
4949 static gdb::option::option_def_group
4950 make_info_print_options_def_group (info_print_options
*opts
)
4952 return {{info_print_options_defs
}, opts
};
4955 /* Command completer for 'info variables' and 'info functions'. */
4958 info_print_command_completer (struct cmd_list_element
*ignore
,
4959 completion_tracker
&tracker
,
4960 const char *text
, const char * /* word */)
4963 = make_info_print_options_def_group (nullptr);
4964 if (gdb::option::complete_options
4965 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4968 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
4969 symbol_completer (ignore
, tracker
, text
, word
);
4972 /* Implement the 'info variables' command. */
4975 info_variables_command (const char *args
, int from_tty
)
4977 info_print_options opts
;
4978 auto grp
= make_info_print_options_def_group (&opts
);
4979 gdb::option::process_options
4980 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
4981 if (args
!= nullptr && *args
== '\0')
4984 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
4985 opts
.type_regexp
, from_tty
);
4988 /* Implement the 'info functions' command. */
4991 info_functions_command (const char *args
, int from_tty
)
4993 info_print_options opts
;
4994 auto grp
= make_info_print_options_def_group (&opts
);
4995 gdb::option::process_options
4996 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
4997 if (args
!= nullptr && *args
== '\0')
5000 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5001 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5004 /* Holds the -q option for the 'info types' command. */
5006 struct info_types_options
5011 /* The options used by the 'info types' command. */
5013 static const gdb::option::option_def info_types_options_defs
[] = {
5014 gdb::option::boolean_option_def
<info_types_options
> {
5016 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5017 nullptr, /* show_cmd_cb */
5018 nullptr /* set_doc */
5022 /* Returns the option group used by 'info types'. */
5024 static gdb::option::option_def_group
5025 make_info_types_options_def_group (info_types_options
*opts
)
5027 return {{info_types_options_defs
}, opts
};
5030 /* Implement the 'info types' command. */
5033 info_types_command (const char *args
, int from_tty
)
5035 info_types_options opts
;
5037 auto grp
= make_info_types_options_def_group (&opts
);
5038 gdb::option::process_options
5039 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5040 if (args
!= nullptr && *args
== '\0')
5042 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5045 /* Command completer for 'info types' command. */
5048 info_types_command_completer (struct cmd_list_element
*ignore
,
5049 completion_tracker
&tracker
,
5050 const char *text
, const char * /* word */)
5053 = make_info_types_options_def_group (nullptr);
5054 if (gdb::option::complete_options
5055 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5058 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5059 symbol_completer (ignore
, tracker
, text
, word
);
5062 /* Implement the 'info modules' command. */
5065 info_modules_command (const char *args
, int from_tty
)
5067 info_types_options opts
;
5069 auto grp
= make_info_types_options_def_group (&opts
);
5070 gdb::option::process_options
5071 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5072 if (args
!= nullptr && *args
== '\0')
5074 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5078 /* Breakpoint all functions matching regular expression. */
5081 rbreak_command_wrapper (char *regexp
, int from_tty
)
5083 rbreak_command (regexp
, from_tty
);
5087 rbreak_command (const char *regexp
, int from_tty
)
5090 const char **files
= NULL
;
5091 const char *file_name
;
5096 const char *colon
= strchr (regexp
, ':');
5098 if (colon
&& *(colon
+ 1) != ':')
5103 colon_index
= colon
- regexp
;
5104 local_name
= (char *) alloca (colon_index
+ 1);
5105 memcpy (local_name
, regexp
, colon_index
);
5106 local_name
[colon_index
--] = 0;
5107 while (isspace (local_name
[colon_index
]))
5108 local_name
[colon_index
--] = 0;
5109 file_name
= local_name
;
5112 regexp
= skip_spaces (colon
+ 1);
5116 std::vector
<symbol_search
> symbols
= search_symbols (regexp
,
5122 scoped_rbreak_breakpoints finalize
;
5123 for (const symbol_search
&p
: symbols
)
5125 if (p
.msymbol
.minsym
== NULL
)
5127 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5128 const char *fullname
= symtab_to_fullname (symtab
);
5130 string
= string_printf ("%s:'%s'", fullname
,
5131 SYMBOL_LINKAGE_NAME (p
.symbol
));
5132 break_command (&string
[0], from_tty
);
5133 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5137 string
= string_printf ("'%s'",
5138 p
.msymbol
.minsym
->linkage_name ());
5140 break_command (&string
[0], from_tty
);
5141 printf_filtered ("<function, no debug info> %s;\n",
5142 p
.msymbol
.minsym
->print_name ());
5148 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5151 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5152 const lookup_name_info
&lookup_name
,
5153 completion_match_result
&match_res
)
5155 const language_defn
*lang
= language_def (symbol_language
);
5157 symbol_name_matcher_ftype
*name_match
5158 = get_symbol_name_matcher (lang
, lookup_name
);
5160 return name_match (symbol_name
, lookup_name
, &match_res
);
5166 completion_list_add_name (completion_tracker
&tracker
,
5167 language symbol_language
,
5168 const char *symname
,
5169 const lookup_name_info
&lookup_name
,
5170 const char *text
, const char *word
)
5172 completion_match_result
&match_res
5173 = tracker
.reset_completion_match_result ();
5175 /* Clip symbols that cannot match. */
5176 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5179 /* Refresh SYMNAME from the match string. It's potentially
5180 different depending on language. (E.g., on Ada, the match may be
5181 the encoded symbol name wrapped in "<>"). */
5182 symname
= match_res
.match
.match ();
5183 gdb_assert (symname
!= NULL
);
5185 /* We have a match for a completion, so add SYMNAME to the current list
5186 of matches. Note that the name is moved to freshly malloc'd space. */
5189 gdb::unique_xmalloc_ptr
<char> completion
5190 = make_completion_match_str (symname
, text
, word
);
5192 /* Here we pass the match-for-lcd object to add_completion. Some
5193 languages match the user text against substrings of symbol
5194 names in some cases. E.g., in C++, "b push_ba" completes to
5195 "std::vector::push_back", "std::string::push_back", etc., and
5196 in this case we want the completion lowest common denominator
5197 to be "push_back" instead of "std::". */
5198 tracker
.add_completion (std::move (completion
),
5199 &match_res
.match_for_lcd
, text
, word
);
5203 /* completion_list_add_name wrapper for struct symbol. */
5206 completion_list_add_symbol (completion_tracker
&tracker
,
5208 const lookup_name_info
&lookup_name
,
5209 const char *text
, const char *word
)
5211 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5212 SYMBOL_NATURAL_NAME (sym
),
5213 lookup_name
, text
, word
);
5216 /* completion_list_add_name wrapper for struct minimal_symbol. */
5219 completion_list_add_msymbol (completion_tracker
&tracker
,
5220 minimal_symbol
*sym
,
5221 const lookup_name_info
&lookup_name
,
5222 const char *text
, const char *word
)
5224 completion_list_add_name (tracker
, MSYMBOL_LANGUAGE (sym
),
5225 sym
->natural_name (),
5226 lookup_name
, text
, word
);
5230 /* ObjC: In case we are completing on a selector, look as the msymbol
5231 again and feed all the selectors into the mill. */
5234 completion_list_objc_symbol (completion_tracker
&tracker
,
5235 struct minimal_symbol
*msymbol
,
5236 const lookup_name_info
&lookup_name
,
5237 const char *text
, const char *word
)
5239 static char *tmp
= NULL
;
5240 static unsigned int tmplen
= 0;
5242 const char *method
, *category
, *selector
;
5245 method
= msymbol
->natural_name ();
5247 /* Is it a method? */
5248 if ((method
[0] != '-') && (method
[0] != '+'))
5252 /* Complete on shortened method method. */
5253 completion_list_add_name (tracker
, language_objc
,
5258 while ((strlen (method
) + 1) >= tmplen
)
5264 tmp
= (char *) xrealloc (tmp
, tmplen
);
5266 selector
= strchr (method
, ' ');
5267 if (selector
!= NULL
)
5270 category
= strchr (method
, '(');
5272 if ((category
!= NULL
) && (selector
!= NULL
))
5274 memcpy (tmp
, method
, (category
- method
));
5275 tmp
[category
- method
] = ' ';
5276 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5277 completion_list_add_name (tracker
, language_objc
, tmp
,
5278 lookup_name
, text
, word
);
5280 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5281 lookup_name
, text
, word
);
5284 if (selector
!= NULL
)
5286 /* Complete on selector only. */
5287 strcpy (tmp
, selector
);
5288 tmp2
= strchr (tmp
, ']');
5292 completion_list_add_name (tracker
, language_objc
, tmp
,
5293 lookup_name
, text
, word
);
5297 /* Break the non-quoted text based on the characters which are in
5298 symbols. FIXME: This should probably be language-specific. */
5301 language_search_unquoted_string (const char *text
, const char *p
)
5303 for (; p
> text
; --p
)
5305 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5309 if ((current_language
->la_language
== language_objc
))
5311 if (p
[-1] == ':') /* Might be part of a method name. */
5313 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5314 p
-= 2; /* Beginning of a method name. */
5315 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5316 { /* Might be part of a method name. */
5319 /* Seeing a ' ' or a '(' is not conclusive evidence
5320 that we are in the middle of a method name. However,
5321 finding "-[" or "+[" should be pretty un-ambiguous.
5322 Unfortunately we have to find it now to decide. */
5325 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5326 t
[-1] == ' ' || t
[-1] == ':' ||
5327 t
[-1] == '(' || t
[-1] == ')')
5332 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5333 p
= t
- 2; /* Method name detected. */
5334 /* Else we leave with p unchanged. */
5344 completion_list_add_fields (completion_tracker
&tracker
,
5346 const lookup_name_info
&lookup_name
,
5347 const char *text
, const char *word
)
5349 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5351 struct type
*t
= SYMBOL_TYPE (sym
);
5352 enum type_code c
= TYPE_CODE (t
);
5355 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5356 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5357 if (TYPE_FIELD_NAME (t
, j
))
5358 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5359 TYPE_FIELD_NAME (t
, j
),
5360 lookup_name
, text
, word
);
5367 symbol_is_function_or_method (symbol
*sym
)
5369 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5371 case TYPE_CODE_FUNC
:
5372 case TYPE_CODE_METHOD
:
5382 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5384 switch (MSYMBOL_TYPE (msymbol
))
5387 case mst_text_gnu_ifunc
:
5388 case mst_solib_trampoline
:
5398 bound_minimal_symbol
5399 find_gnu_ifunc (const symbol
*sym
)
5401 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5404 lookup_name_info
lookup_name (SYMBOL_SEARCH_NAME (sym
),
5405 symbol_name_match_type::SEARCH_NAME
);
5406 struct objfile
*objfile
= symbol_objfile (sym
);
5408 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5409 minimal_symbol
*ifunc
= NULL
;
5411 iterate_over_minimal_symbols (objfile
, lookup_name
,
5412 [&] (minimal_symbol
*minsym
)
5414 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5415 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5417 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5418 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5420 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
5422 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5424 current_top_target ());
5426 if (msym_addr
== address
)
5436 return {ifunc
, objfile
};
5440 /* Add matching symbols from SYMTAB to the current completion list. */
5443 add_symtab_completions (struct compunit_symtab
*cust
,
5444 completion_tracker
&tracker
,
5445 complete_symbol_mode mode
,
5446 const lookup_name_info
&lookup_name
,
5447 const char *text
, const char *word
,
5448 enum type_code code
)
5451 const struct block
*b
;
5452 struct block_iterator iter
;
5458 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5461 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5462 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5464 if (completion_skip_symbol (mode
, sym
))
5467 if (code
== TYPE_CODE_UNDEF
5468 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5469 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5470 completion_list_add_symbol (tracker
, sym
,
5478 default_collect_symbol_completion_matches_break_on
5479 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5480 symbol_name_match_type name_match_type
,
5481 const char *text
, const char *word
,
5482 const char *break_on
, enum type_code code
)
5484 /* Problem: All of the symbols have to be copied because readline
5485 frees them. I'm not going to worry about this; hopefully there
5486 won't be that many. */
5489 const struct block
*b
;
5490 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5491 struct block_iterator iter
;
5492 /* The symbol we are completing on. Points in same buffer as text. */
5493 const char *sym_text
;
5495 /* Now look for the symbol we are supposed to complete on. */
5496 if (mode
== complete_symbol_mode::LINESPEC
)
5502 const char *quote_pos
= NULL
;
5504 /* First see if this is a quoted string. */
5506 for (p
= text
; *p
!= '\0'; ++p
)
5508 if (quote_found
!= '\0')
5510 if (*p
== quote_found
)
5511 /* Found close quote. */
5513 else if (*p
== '\\' && p
[1] == quote_found
)
5514 /* A backslash followed by the quote character
5515 doesn't end the string. */
5518 else if (*p
== '\'' || *p
== '"')
5524 if (quote_found
== '\'')
5525 /* A string within single quotes can be a symbol, so complete on it. */
5526 sym_text
= quote_pos
+ 1;
5527 else if (quote_found
== '"')
5528 /* A double-quoted string is never a symbol, nor does it make sense
5529 to complete it any other way. */
5535 /* It is not a quoted string. Break it based on the characters
5536 which are in symbols. */
5539 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5540 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5549 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5551 /* At this point scan through the misc symbol vectors and add each
5552 symbol you find to the list. Eventually we want to ignore
5553 anything that isn't a text symbol (everything else will be
5554 handled by the psymtab code below). */
5556 if (code
== TYPE_CODE_UNDEF
)
5558 for (objfile
*objfile
: current_program_space
->objfiles ())
5560 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5564 if (completion_skip_symbol (mode
, msymbol
))
5567 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5570 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5576 /* Add completions for all currently loaded symbol tables. */
5577 for (objfile
*objfile
: current_program_space
->objfiles ())
5579 for (compunit_symtab
*cust
: objfile
->compunits ())
5580 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5581 sym_text
, word
, code
);
5584 /* Look through the partial symtabs for all symbols which begin by
5585 matching SYM_TEXT. Expand all CUs that you find to the list. */
5586 expand_symtabs_matching (NULL
,
5589 [&] (compunit_symtab
*symtab
) /* expansion notify */
5591 add_symtab_completions (symtab
,
5592 tracker
, mode
, lookup_name
,
5593 sym_text
, word
, code
);
5597 /* Search upwards from currently selected frame (so that we can
5598 complete on local vars). Also catch fields of types defined in
5599 this places which match our text string. Only complete on types
5600 visible from current context. */
5602 b
= get_selected_block (0);
5603 surrounding_static_block
= block_static_block (b
);
5604 surrounding_global_block
= block_global_block (b
);
5605 if (surrounding_static_block
!= NULL
)
5606 while (b
!= surrounding_static_block
)
5610 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5612 if (code
== TYPE_CODE_UNDEF
)
5614 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5616 completion_list_add_fields (tracker
, sym
, lookup_name
,
5619 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5620 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5621 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5625 /* Stop when we encounter an enclosing function. Do not stop for
5626 non-inlined functions - the locals of the enclosing function
5627 are in scope for a nested function. */
5628 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5630 b
= BLOCK_SUPERBLOCK (b
);
5633 /* Add fields from the file's types; symbols will be added below. */
5635 if (code
== TYPE_CODE_UNDEF
)
5637 if (surrounding_static_block
!= NULL
)
5638 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5639 completion_list_add_fields (tracker
, sym
, lookup_name
,
5642 if (surrounding_global_block
!= NULL
)
5643 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5644 completion_list_add_fields (tracker
, sym
, lookup_name
,
5648 /* Skip macros if we are completing a struct tag -- arguable but
5649 usually what is expected. */
5650 if (current_language
->la_macro_expansion
== macro_expansion_c
5651 && code
== TYPE_CODE_UNDEF
)
5653 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5655 /* This adds a macro's name to the current completion list. */
5656 auto add_macro_name
= [&] (const char *macro_name
,
5657 const macro_definition
*,
5658 macro_source_file
*,
5661 completion_list_add_name (tracker
, language_c
, macro_name
,
5662 lookup_name
, sym_text
, word
);
5665 /* Add any macros visible in the default scope. Note that this
5666 may yield the occasional wrong result, because an expression
5667 might be evaluated in a scope other than the default. For
5668 example, if the user types "break file:line if <TAB>", the
5669 resulting expression will be evaluated at "file:line" -- but
5670 at there does not seem to be a way to detect this at
5672 scope
= default_macro_scope ();
5674 macro_for_each_in_scope (scope
->file
, scope
->line
,
5677 /* User-defined macros are always visible. */
5678 macro_for_each (macro_user_macros
, add_macro_name
);
5683 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5684 complete_symbol_mode mode
,
5685 symbol_name_match_type name_match_type
,
5686 const char *text
, const char *word
,
5687 enum type_code code
)
5689 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5695 /* Collect all symbols (regardless of class) which begin by matching
5699 collect_symbol_completion_matches (completion_tracker
&tracker
,
5700 complete_symbol_mode mode
,
5701 symbol_name_match_type name_match_type
,
5702 const char *text
, const char *word
)
5704 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5710 /* Like collect_symbol_completion_matches, but only collect
5711 STRUCT_DOMAIN symbols whose type code is CODE. */
5714 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5715 const char *text
, const char *word
,
5716 enum type_code code
)
5718 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5719 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5721 gdb_assert (code
== TYPE_CODE_UNION
5722 || code
== TYPE_CODE_STRUCT
5723 || code
== TYPE_CODE_ENUM
);
5724 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5729 /* Like collect_symbol_completion_matches, but collects a list of
5730 symbols defined in all source files named SRCFILE. */
5733 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5734 complete_symbol_mode mode
,
5735 symbol_name_match_type name_match_type
,
5736 const char *text
, const char *word
,
5737 const char *srcfile
)
5739 /* The symbol we are completing on. Points in same buffer as text. */
5740 const char *sym_text
;
5742 /* Now look for the symbol we are supposed to complete on.
5743 FIXME: This should be language-specific. */
5744 if (mode
== complete_symbol_mode::LINESPEC
)
5750 const char *quote_pos
= NULL
;
5752 /* First see if this is a quoted string. */
5754 for (p
= text
; *p
!= '\0'; ++p
)
5756 if (quote_found
!= '\0')
5758 if (*p
== quote_found
)
5759 /* Found close quote. */
5761 else if (*p
== '\\' && p
[1] == quote_found
)
5762 /* A backslash followed by the quote character
5763 doesn't end the string. */
5766 else if (*p
== '\'' || *p
== '"')
5772 if (quote_found
== '\'')
5773 /* A string within single quotes can be a symbol, so complete on it. */
5774 sym_text
= quote_pos
+ 1;
5775 else if (quote_found
== '"')
5776 /* A double-quoted string is never a symbol, nor does it make sense
5777 to complete it any other way. */
5783 /* Not a quoted string. */
5784 sym_text
= language_search_unquoted_string (text
, p
);
5788 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5790 /* Go through symtabs for SRCFILE and check the externs and statics
5791 for symbols which match. */
5792 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5794 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5795 tracker
, mode
, lookup_name
,
5796 sym_text
, word
, TYPE_CODE_UNDEF
);
5801 /* A helper function for make_source_files_completion_list. It adds
5802 another file name to a list of possible completions, growing the
5803 list as necessary. */
5806 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5807 completion_list
*list
)
5809 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5813 not_interesting_fname (const char *fname
)
5815 static const char *illegal_aliens
[] = {
5816 "_globals_", /* inserted by coff_symtab_read */
5821 for (i
= 0; illegal_aliens
[i
]; i
++)
5823 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5829 /* An object of this type is passed as the user_data argument to
5830 map_partial_symbol_filenames. */
5831 struct add_partial_filename_data
5833 struct filename_seen_cache
*filename_seen_cache
;
5837 completion_list
*list
;
5840 /* A callback for map_partial_symbol_filenames. */
5843 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5846 struct add_partial_filename_data
*data
5847 = (struct add_partial_filename_data
*) user_data
;
5849 if (not_interesting_fname (filename
))
5851 if (!data
->filename_seen_cache
->seen (filename
)
5852 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5854 /* This file matches for a completion; add it to the
5855 current list of matches. */
5856 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5860 const char *base_name
= lbasename (filename
);
5862 if (base_name
!= filename
5863 && !data
->filename_seen_cache
->seen (base_name
)
5864 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5865 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5869 /* Return a list of all source files whose names begin with matching
5870 TEXT. The file names are looked up in the symbol tables of this
5874 make_source_files_completion_list (const char *text
, const char *word
)
5876 size_t text_len
= strlen (text
);
5877 completion_list list
;
5878 const char *base_name
;
5879 struct add_partial_filename_data datum
;
5881 if (!have_full_symbols () && !have_partial_symbols ())
5884 filename_seen_cache filenames_seen
;
5886 for (objfile
*objfile
: current_program_space
->objfiles ())
5888 for (compunit_symtab
*cu
: objfile
->compunits ())
5890 for (symtab
*s
: compunit_filetabs (cu
))
5892 if (not_interesting_fname (s
->filename
))
5894 if (!filenames_seen
.seen (s
->filename
)
5895 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
5897 /* This file matches for a completion; add it to the current
5899 add_filename_to_list (s
->filename
, text
, word
, &list
);
5903 /* NOTE: We allow the user to type a base name when the
5904 debug info records leading directories, but not the other
5905 way around. This is what subroutines of breakpoint
5906 command do when they parse file names. */
5907 base_name
= lbasename (s
->filename
);
5908 if (base_name
!= s
->filename
5909 && !filenames_seen
.seen (base_name
)
5910 && filename_ncmp (base_name
, text
, text_len
) == 0)
5911 add_filename_to_list (base_name
, text
, word
, &list
);
5917 datum
.filename_seen_cache
= &filenames_seen
;
5920 datum
.text_len
= text_len
;
5922 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
5923 0 /*need_fullname*/);
5930 /* Return the "main_info" object for the current program space. If
5931 the object has not yet been created, create it and fill in some
5934 static struct main_info
*
5935 get_main_info (void)
5937 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
5941 /* It may seem strange to store the main name in the progspace
5942 and also in whatever objfile happens to see a main name in
5943 its debug info. The reason for this is mainly historical:
5944 gdb returned "main" as the name even if no function named
5945 "main" was defined the program; and this approach lets us
5946 keep compatibility. */
5947 info
= main_progspace_key
.emplace (current_program_space
);
5954 set_main_name (const char *name
, enum language lang
)
5956 struct main_info
*info
= get_main_info ();
5958 if (info
->name_of_main
!= NULL
)
5960 xfree (info
->name_of_main
);
5961 info
->name_of_main
= NULL
;
5962 info
->language_of_main
= language_unknown
;
5966 info
->name_of_main
= xstrdup (name
);
5967 info
->language_of_main
= lang
;
5971 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
5975 find_main_name (void)
5977 const char *new_main_name
;
5979 /* First check the objfiles to see whether a debuginfo reader has
5980 picked up the appropriate main name. Historically the main name
5981 was found in a more or less random way; this approach instead
5982 relies on the order of objfile creation -- which still isn't
5983 guaranteed to get the correct answer, but is just probably more
5985 for (objfile
*objfile
: current_program_space
->objfiles ())
5987 if (objfile
->per_bfd
->name_of_main
!= NULL
)
5989 set_main_name (objfile
->per_bfd
->name_of_main
,
5990 objfile
->per_bfd
->language_of_main
);
5995 /* Try to see if the main procedure is in Ada. */
5996 /* FIXME: brobecker/2005-03-07: Another way of doing this would
5997 be to add a new method in the language vector, and call this
5998 method for each language until one of them returns a non-empty
5999 name. This would allow us to remove this hard-coded call to
6000 an Ada function. It is not clear that this is a better approach
6001 at this point, because all methods need to be written in a way
6002 such that false positives never be returned. For instance, it is
6003 important that a method does not return a wrong name for the main
6004 procedure if the main procedure is actually written in a different
6005 language. It is easy to guaranty this with Ada, since we use a
6006 special symbol generated only when the main in Ada to find the name
6007 of the main procedure. It is difficult however to see how this can
6008 be guarantied for languages such as C, for instance. This suggests
6009 that order of call for these methods becomes important, which means
6010 a more complicated approach. */
6011 new_main_name
= ada_main_name ();
6012 if (new_main_name
!= NULL
)
6014 set_main_name (new_main_name
, language_ada
);
6018 new_main_name
= d_main_name ();
6019 if (new_main_name
!= NULL
)
6021 set_main_name (new_main_name
, language_d
);
6025 new_main_name
= go_main_name ();
6026 if (new_main_name
!= NULL
)
6028 set_main_name (new_main_name
, language_go
);
6032 new_main_name
= pascal_main_name ();
6033 if (new_main_name
!= NULL
)
6035 set_main_name (new_main_name
, language_pascal
);
6039 /* The languages above didn't identify the name of the main procedure.
6040 Fallback to "main". */
6041 set_main_name ("main", language_unknown
);
6049 struct main_info
*info
= get_main_info ();
6051 if (info
->name_of_main
== NULL
)
6054 return info
->name_of_main
;
6057 /* Return the language of the main function. If it is not known,
6058 return language_unknown. */
6061 main_language (void)
6063 struct main_info
*info
= get_main_info ();
6065 if (info
->name_of_main
== NULL
)
6068 return info
->language_of_main
;
6071 /* Handle ``executable_changed'' events for the symtab module. */
6074 symtab_observer_executable_changed (void)
6076 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6077 set_main_name (NULL
, language_unknown
);
6080 /* Return 1 if the supplied producer string matches the ARM RealView
6081 compiler (armcc). */
6084 producer_is_realview (const char *producer
)
6086 static const char *const arm_idents
[] = {
6087 "ARM C Compiler, ADS",
6088 "Thumb C Compiler, ADS",
6089 "ARM C++ Compiler, ADS",
6090 "Thumb C++ Compiler, ADS",
6091 "ARM/Thumb C/C++ Compiler, RVCT",
6092 "ARM C/C++ Compiler, RVCT"
6096 if (producer
== NULL
)
6099 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6100 if (startswith (producer
, arm_idents
[i
]))
6108 /* The next index to hand out in response to a registration request. */
6110 static int next_aclass_value
= LOC_FINAL_VALUE
;
6112 /* The maximum number of "aclass" registrations we support. This is
6113 constant for convenience. */
6114 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6116 /* The objects representing the various "aclass" values. The elements
6117 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6118 elements are those registered at gdb initialization time. */
6120 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6122 /* The globally visible pointer. This is separate from 'symbol_impl'
6123 so that it can be const. */
6125 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6127 /* Make sure we saved enough room in struct symbol. */
6129 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6131 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6132 is the ops vector associated with this index. This returns the new
6133 index, which should be used as the aclass_index field for symbols
6137 register_symbol_computed_impl (enum address_class aclass
,
6138 const struct symbol_computed_ops
*ops
)
6140 int result
= next_aclass_value
++;
6142 gdb_assert (aclass
== LOC_COMPUTED
);
6143 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6144 symbol_impl
[result
].aclass
= aclass
;
6145 symbol_impl
[result
].ops_computed
= ops
;
6147 /* Sanity check OPS. */
6148 gdb_assert (ops
!= NULL
);
6149 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6150 gdb_assert (ops
->describe_location
!= NULL
);
6151 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6152 gdb_assert (ops
->read_variable
!= NULL
);
6157 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6158 OPS is the ops vector associated with this index. This returns the
6159 new index, which should be used as the aclass_index field for symbols
6163 register_symbol_block_impl (enum address_class aclass
,
6164 const struct symbol_block_ops
*ops
)
6166 int result
= next_aclass_value
++;
6168 gdb_assert (aclass
== LOC_BLOCK
);
6169 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6170 symbol_impl
[result
].aclass
= aclass
;
6171 symbol_impl
[result
].ops_block
= ops
;
6173 /* Sanity check OPS. */
6174 gdb_assert (ops
!= NULL
);
6175 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6180 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6181 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6182 this index. This returns the new index, which should be used as
6183 the aclass_index field for symbols of this type. */
6186 register_symbol_register_impl (enum address_class aclass
,
6187 const struct symbol_register_ops
*ops
)
6189 int result
= next_aclass_value
++;
6191 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6192 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6193 symbol_impl
[result
].aclass
= aclass
;
6194 symbol_impl
[result
].ops_register
= ops
;
6199 /* Initialize elements of 'symbol_impl' for the constants in enum
6203 initialize_ordinary_address_classes (void)
6207 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6208 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6213 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6216 initialize_objfile_symbol (struct symbol
*sym
)
6218 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6219 SYMBOL_SECTION (sym
) = -1;
6222 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6226 allocate_symbol (struct objfile
*objfile
)
6228 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6230 initialize_objfile_symbol (result
);
6235 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6238 struct template_symbol
*
6239 allocate_template_symbol (struct objfile
*objfile
)
6241 struct template_symbol
*result
;
6243 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6244 initialize_objfile_symbol (result
);
6252 symbol_objfile (const struct symbol
*symbol
)
6254 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6255 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6261 symbol_arch (const struct symbol
*symbol
)
6263 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6264 return symbol
->owner
.arch
;
6265 return get_objfile_arch (SYMTAB_OBJFILE (symbol
->owner
.symtab
));
6271 symbol_symtab (const struct symbol
*symbol
)
6273 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6274 return symbol
->owner
.symtab
;
6280 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6282 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6283 symbol
->owner
.symtab
= symtab
;
6289 get_symbol_address (const struct symbol
*sym
)
6291 gdb_assert (sym
->maybe_copied
);
6292 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6294 const char *linkage_name
= SYMBOL_LINKAGE_NAME (sym
);
6296 for (objfile
*objfile
: current_program_space
->objfiles ())
6298 bound_minimal_symbol minsym
6299 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6300 if (minsym
.minsym
!= nullptr)
6301 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6303 return sym
->value
.address
;
6309 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6311 gdb_assert (minsym
->maybe_copied
);
6312 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6314 const char *linkage_name
= minsym
->linkage_name ();
6316 for (objfile
*objfile
: current_program_space
->objfiles ())
6318 if ((objfile
->flags
& OBJF_MAINLINE
) != 0)
6320 bound_minimal_symbol found
6321 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6322 if (found
.minsym
!= nullptr)
6323 return BMSYMBOL_VALUE_ADDRESS (found
);
6326 return (minsym
->value
.address
6327 + ANOFFSET (objf
->section_offsets
, minsym
->section
));
6332 /* Hold the sub-commands of 'info module'. */
6334 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6336 /* Implement the 'info module' command, just displays some help text for
6337 the available sub-commands. */
6340 info_module_command (const char *args
, int from_tty
)
6342 help_list (info_module_cmdlist
, "info module ", class_info
, gdb_stdout
);
6347 std::vector
<module_symbol_search
>
6348 search_module_symbols (const char *module_regexp
, const char *regexp
,
6349 const char *type_regexp
, search_domain kind
)
6351 std::vector
<module_symbol_search
> results
;
6353 /* Search for all modules matching MODULE_REGEXP. */
6354 std::vector
<symbol_search
> modules
= search_symbols (module_regexp
,
6359 /* Now search for all symbols of the required KIND matching the required
6360 regular expressions. We figure out which ones are in which modules
6362 std::vector
<symbol_search
> symbols
= search_symbols (regexp
, kind
,
6366 /* Now iterate over all MODULES, checking to see which items from
6367 SYMBOLS are in each module. */
6368 for (const symbol_search
&p
: modules
)
6372 /* This is a module. */
6373 gdb_assert (p
.symbol
!= nullptr);
6375 std::string prefix
= SYMBOL_PRINT_NAME (p
.symbol
);
6378 for (const symbol_search
&q
: symbols
)
6380 if (q
.symbol
== nullptr)
6383 if (strncmp (SYMBOL_PRINT_NAME (q
.symbol
), prefix
.c_str (),
6384 prefix
.size ()) != 0)
6387 results
.push_back ({p
, q
});
6394 /* Implement the core of both 'info module functions' and 'info module
6398 info_module_subcommand (bool quiet
, const char *module_regexp
,
6399 const char *regexp
, const char *type_regexp
,
6402 /* Print a header line. Don't build the header line bit by bit as this
6403 prevents internationalisation. */
6406 if (module_regexp
== nullptr)
6408 if (type_regexp
== nullptr)
6410 if (regexp
== nullptr)
6411 printf_filtered ((kind
== VARIABLES_DOMAIN
6412 ? _("All variables in all modules:")
6413 : _("All functions in all modules:")));
6416 ((kind
== VARIABLES_DOMAIN
6417 ? _("All variables matching regular expression"
6418 " \"%s\" in all modules:")
6419 : _("All functions matching regular expression"
6420 " \"%s\" in all modules:")),
6425 if (regexp
== nullptr)
6427 ((kind
== VARIABLES_DOMAIN
6428 ? _("All variables with type matching regular "
6429 "expression \"%s\" in all modules:")
6430 : _("All functions with type matching regular "
6431 "expression \"%s\" in all modules:")),
6435 ((kind
== VARIABLES_DOMAIN
6436 ? _("All variables matching regular expression "
6437 "\"%s\",\n\twith type matching regular "
6438 "expression \"%s\" in all modules:")
6439 : _("All functions matching regular expression "
6440 "\"%s\",\n\twith type matching regular "
6441 "expression \"%s\" in all modules:")),
6442 regexp
, type_regexp
);
6447 if (type_regexp
== nullptr)
6449 if (regexp
== nullptr)
6451 ((kind
== VARIABLES_DOMAIN
6452 ? _("All variables in all modules matching regular "
6453 "expression \"%s\":")
6454 : _("All functions in all modules matching regular "
6455 "expression \"%s\":")),
6459 ((kind
== VARIABLES_DOMAIN
6460 ? _("All variables matching regular expression "
6461 "\"%s\",\n\tin all modules matching regular "
6462 "expression \"%s\":")
6463 : _("All functions matching regular expression "
6464 "\"%s\",\n\tin all modules matching regular "
6465 "expression \"%s\":")),
6466 regexp
, module_regexp
);
6470 if (regexp
== nullptr)
6472 ((kind
== VARIABLES_DOMAIN
6473 ? _("All variables with type matching regular "
6474 "expression \"%s\"\n\tin all modules matching "
6475 "regular expression \"%s\":")
6476 : _("All functions with type matching regular "
6477 "expression \"%s\"\n\tin all modules matching "
6478 "regular expression \"%s\":")),
6479 type_regexp
, module_regexp
);
6482 ((kind
== VARIABLES_DOMAIN
6483 ? _("All variables matching regular expression "
6484 "\"%s\",\n\twith type matching regular expression "
6485 "\"%s\",\n\tin all modules matching regular "
6486 "expression \"%s\":")
6487 : _("All functions matching regular expression "
6488 "\"%s\",\n\twith type matching regular expression "
6489 "\"%s\",\n\tin all modules matching regular "
6490 "expression \"%s\":")),
6491 regexp
, type_regexp
, module_regexp
);
6494 printf_filtered ("\n");
6497 /* Find all symbols of type KIND matching the given regular expressions
6498 along with the symbols for the modules in which those symbols
6500 std::vector
<module_symbol_search
> module_symbols
6501 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6503 std::sort (module_symbols
.begin (), module_symbols
.end (),
6504 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6506 if (a
.first
< b
.first
)
6508 else if (a
.first
== b
.first
)
6509 return a
.second
< b
.second
;
6514 const char *last_filename
= "";
6515 const symbol
*last_module_symbol
= nullptr;
6516 for (const module_symbol_search
&ms
: module_symbols
)
6518 const symbol_search
&p
= ms
.first
;
6519 const symbol_search
&q
= ms
.second
;
6521 gdb_assert (q
.symbol
!= nullptr);
6523 if (last_module_symbol
!= p
.symbol
)
6525 printf_filtered ("\n");
6526 printf_filtered (_("Module \"%s\":\n"),
6527 SYMBOL_PRINT_NAME (p
.symbol
));
6528 last_module_symbol
= p
.symbol
;
6532 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6535 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6539 /* Hold the option values for the 'info module .....' sub-commands. */
6541 struct info_modules_var_func_options
6544 char *type_regexp
= nullptr;
6545 char *module_regexp
= nullptr;
6547 ~info_modules_var_func_options ()
6549 xfree (type_regexp
);
6550 xfree (module_regexp
);
6554 /* The options used by 'info module variables' and 'info module functions'
6557 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6558 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6560 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6561 nullptr, /* show_cmd_cb */
6562 nullptr /* set_doc */
6565 gdb::option::string_option_def
<info_modules_var_func_options
> {
6567 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6568 nullptr, /* show_cmd_cb */
6569 nullptr /* set_doc */
6572 gdb::option::string_option_def
<info_modules_var_func_options
> {
6574 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6575 nullptr, /* show_cmd_cb */
6576 nullptr /* set_doc */
6580 /* Return the option group used by the 'info module ...' sub-commands. */
6582 static inline gdb::option::option_def_group
6583 make_info_modules_var_func_options_def_group
6584 (info_modules_var_func_options
*opts
)
6586 return {{info_modules_var_func_options_defs
}, opts
};
6589 /* Implements the 'info module functions' command. */
6592 info_module_functions_command (const char *args
, int from_tty
)
6594 info_modules_var_func_options opts
;
6595 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6596 gdb::option::process_options
6597 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6598 if (args
!= nullptr && *args
== '\0')
6601 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6602 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6605 /* Implements the 'info module variables' command. */
6608 info_module_variables_command (const char *args
, int from_tty
)
6610 info_modules_var_func_options opts
;
6611 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6612 gdb::option::process_options
6613 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6614 if (args
!= nullptr && *args
== '\0')
6617 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6618 opts
.type_regexp
, VARIABLES_DOMAIN
);
6621 /* Command completer for 'info module ...' sub-commands. */
6624 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6625 completion_tracker
&tracker
,
6627 const char * /* word */)
6630 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6631 if (gdb::option::complete_options
6632 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6635 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6636 symbol_completer (ignore
, tracker
, text
, word
);
6642 _initialize_symtab (void)
6644 cmd_list_element
*c
;
6646 initialize_ordinary_address_classes ();
6648 c
= add_info ("variables", info_variables_command
,
6649 info_print_args_help (_("\
6650 All global and static variable names or those matching REGEXPs.\n\
6651 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6652 Prints the global and static variables.\n"),
6653 _("global and static variables"),
6655 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6658 c
= add_com ("whereis", class_info
, info_variables_command
,
6659 info_print_args_help (_("\
6660 All global and static variable names, or those matching REGEXPs.\n\
6661 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6662 Prints the global and static variables.\n"),
6663 _("global and static variables"),
6665 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6668 c
= add_info ("functions", info_functions_command
,
6669 info_print_args_help (_("\
6670 All function names or those matching REGEXPs.\n\
6671 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6672 Prints the functions.\n"),
6675 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6677 c
= add_info ("types", info_types_command
, _("\
6678 All type names, or those matching REGEXP.\n\
6679 Usage: info types [-q] [REGEXP]\n\
6680 Print information about all types matching REGEXP, or all types if no\n\
6681 REGEXP is given. The optional flag -q disables printing of headers."));
6682 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6684 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6686 static std::string info_sources_help
6687 = gdb::option::build_help (_("\
6688 All source files in the program or those matching REGEXP.\n\
6689 Usage: info sources [OPTION]... [REGEXP]\n\
6690 By default, REGEXP is used to match anywhere in the filename.\n\
6696 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6697 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6699 c
= add_info ("modules", info_modules_command
,
6700 _("All module names, or those matching REGEXP."));
6701 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6703 add_prefix_cmd ("module", class_info
, info_module_command
, _("\
6704 Print information about modules."),
6705 &info_module_cmdlist
, "info module ",
6708 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6709 Display functions arranged by modules.\n\
6710 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6711 Print a summary of all functions within each Fortran module, grouped by\n\
6712 module and file. For each function the line on which the function is\n\
6713 defined is given along with the type signature and name of the function.\n\
6715 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6716 listed. If MODREGEXP is provided then only functions in modules matching\n\
6717 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6718 type signature matches TYPEREGEXP are listed.\n\
6720 The -q flag suppresses printing some header information."),
6721 &info_module_cmdlist
);
6722 set_cmd_completer_handle_brkchars
6723 (c
, info_module_var_func_command_completer
);
6725 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6726 Display variables arranged by modules.\n\
6727 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6728 Print a summary of all variables within each Fortran module, grouped by\n\
6729 module and file. For each variable the line on which the variable is\n\
6730 defined is given along with the type and name of the variable.\n\
6732 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6733 listed. If MODREGEXP is provided then only variables in modules matching\n\
6734 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6735 type matches TYPEREGEXP are listed.\n\
6737 The -q flag suppresses printing some header information."),
6738 &info_module_cmdlist
);
6739 set_cmd_completer_handle_brkchars
6740 (c
, info_module_var_func_command_completer
);
6742 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6743 _("Set a breakpoint for all functions matching REGEXP."));
6745 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6746 multiple_symbols_modes
, &multiple_symbols_mode
,
6748 Set how the debugger handles ambiguities in expressions."), _("\
6749 Show how the debugger handles ambiguities in expressions."), _("\
6750 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6751 NULL
, NULL
, &setlist
, &showlist
);
6753 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6754 &basenames_may_differ
, _("\
6755 Set whether a source file may have multiple base names."), _("\
6756 Show whether a source file may have multiple base names."), _("\
6757 (A \"base name\" is the name of a file with the directory part removed.\n\
6758 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6759 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6760 before comparing them. Canonicalization is an expensive operation,\n\
6761 but it allows the same file be known by more than one base name.\n\
6762 If not set (the default), all source files are assumed to have just\n\
6763 one base name, and gdb will do file name comparisons more efficiently."),
6765 &setlist
, &showlist
);
6767 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6768 _("Set debugging of symbol table creation."),
6769 _("Show debugging of symbol table creation."), _("\
6770 When enabled (non-zero), debugging messages are printed when building\n\
6771 symbol tables. A value of 1 (one) normally provides enough information.\n\
6772 A value greater than 1 provides more verbose information."),
6775 &setdebuglist
, &showdebuglist
);
6777 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6779 Set debugging of symbol lookup."), _("\
6780 Show debugging of symbol lookup."), _("\
6781 When enabled (non-zero), symbol lookups are logged."),
6783 &setdebuglist
, &showdebuglist
);
6785 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6786 &new_symbol_cache_size
,
6787 _("Set the size of the symbol cache."),
6788 _("Show the size of the symbol cache."), _("\
6789 The size of the symbol cache.\n\
6790 If zero then the symbol cache is disabled."),
6791 set_symbol_cache_size_handler
, NULL
,
6792 &maintenance_set_cmdlist
,
6793 &maintenance_show_cmdlist
);
6795 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6796 _("Dump the symbol cache for each program space."),
6797 &maintenanceprintlist
);
6799 add_cmd ("symbol-cache-statistics", class_maintenance
,
6800 maintenance_print_symbol_cache_statistics
,
6801 _("Print symbol cache statistics for each program space."),
6802 &maintenanceprintlist
);
6804 add_cmd ("flush-symbol-cache", class_maintenance
,
6805 maintenance_flush_symbol_cache
,
6806 _("Flush the symbol cache for each program space."),
6809 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6810 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6811 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);