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
));
793 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
796 char *demangled
= NULL
;
799 if (gsymbol
->language
== language_unknown
)
800 gsymbol
->language
= language_auto
;
802 if (gsymbol
->language
!= language_auto
)
804 const struct language_defn
*lang
= language_def (gsymbol
->language
);
806 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
810 for (i
= language_unknown
; i
< nr_languages
; ++i
)
812 enum language l
= (enum language
) i
;
813 const struct language_defn
*lang
= language_def (l
);
815 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
817 gsymbol
->language
= l
;
825 /* Set both the mangled and demangled (if any) names for GSYMBOL based
826 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
827 objfile's obstack; but if COPY_NAME is 0 and if NAME is
828 NUL-terminated, then this function assumes that NAME is already
829 correctly saved (either permanently or with a lifetime tied to the
830 objfile), and it will not be copied.
832 The hash table corresponding to OBJFILE is used, and the memory
833 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
834 so the pointer can be discarded after calling this function. */
837 symbol_set_names (struct general_symbol_info
*gsymbol
,
838 gdb::string_view linkage_name
, bool copy_name
,
839 struct objfile_per_bfd_storage
*per_bfd
)
841 struct demangled_name_entry
**slot
;
843 if (gsymbol
->language
== language_ada
)
845 /* In Ada, we do the symbol lookups using the mangled name, so
846 we can save some space by not storing the demangled name. */
848 gsymbol
->name
= linkage_name
.data ();
851 char *name
= (char *) obstack_alloc (&per_bfd
->storage_obstack
,
852 linkage_name
.length () + 1);
854 memcpy (name
, linkage_name
.data (), linkage_name
.length ());
855 name
[linkage_name
.length ()] = '\0';
856 gsymbol
->name
= name
;
858 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
863 if (per_bfd
->demangled_names_hash
== NULL
)
864 create_demangled_names_hash (per_bfd
);
866 struct demangled_name_entry
entry (linkage_name
);
867 slot
= ((struct demangled_name_entry
**)
868 htab_find_slot (per_bfd
->demangled_names_hash
.get (),
871 /* If this name is not in the hash table, add it. */
873 /* A C version of the symbol may have already snuck into the table.
874 This happens to, e.g., main.init (__go_init_main). Cope. */
875 || (gsymbol
->language
== language_go
&& (*slot
)->demangled
== nullptr))
877 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
878 to true if the string might not be nullterminated. We have to make
879 this copy because demangling needs a nullterminated string. */
880 gdb::string_view linkage_name_copy
;
883 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
884 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
885 alloc_name
[linkage_name
.length ()] = '\0';
887 linkage_name_copy
= gdb::string_view (alloc_name
,
888 linkage_name
.length ());
891 linkage_name_copy
= linkage_name
;
893 /* The const_cast is safe because the only reason it is already
894 initialized is if we purposefully set it from a background
895 thread to avoid doing the work here. However, it is still
896 allocated from the heap and needs to be freed by us, just
897 like if we called symbol_find_demangled_name here. */
898 gdb::unique_xmalloc_ptr
<char> demangled_name
899 (gsymbol
->language_specific
.demangled_name
900 ? const_cast<char *> (gsymbol
->language_specific
.demangled_name
)
901 : symbol_find_demangled_name (gsymbol
, linkage_name_copy
.data ()));
903 /* Suppose we have demangled_name==NULL, copy_name==0, and
904 linkage_name_copy==linkage_name. In this case, we already have the
905 mangled name saved, and we don't have a demangled name. So,
906 you might think we could save a little space by not recording
907 this in the hash table at all.
909 It turns out that it is actually important to still save such
910 an entry in the hash table, because storing this name gives
911 us better bcache hit rates for partial symbols. */
915 = ((struct demangled_name_entry
*)
916 obstack_alloc (&per_bfd
->storage_obstack
,
917 sizeof (demangled_name_entry
)));
918 new (*slot
) demangled_name_entry (linkage_name
);
922 /* If we must copy the mangled name, put it directly after
923 the struct so we can have a single allocation. */
925 = ((struct demangled_name_entry
*)
926 obstack_alloc (&per_bfd
->storage_obstack
,
927 sizeof (demangled_name_entry
)
928 + linkage_name
.length () + 1));
929 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
930 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
931 mangled_ptr
[linkage_name
.length ()] = '\0';
932 new (*slot
) demangled_name_entry
933 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
935 (*slot
)->demangled
= std::move (demangled_name
);
936 (*slot
)->language
= gsymbol
->language
;
938 else if (gsymbol
->language
== language_unknown
939 || gsymbol
->language
== language_auto
)
940 gsymbol
->language
= (*slot
)->language
;
942 gsymbol
->name
= (*slot
)->mangled
.data ();
943 if ((*slot
)->demangled
!= nullptr)
944 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
.get (),
945 &per_bfd
->storage_obstack
);
947 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
953 general_symbol_info::natural_name () const
961 case language_fortran
:
962 if (symbol_get_demangled_name (this) != NULL
)
963 return symbol_get_demangled_name (this);
966 return ada_decode_symbol (this);
976 general_symbol_info::demangled_name () const
978 const char *dem_name
= NULL
;
986 case language_fortran
:
987 dem_name
= symbol_get_demangled_name (this);
990 dem_name
= ada_decode_symbol (this);
1001 general_symbol_info::search_name () const
1003 if (language
== language_ada
)
1006 return natural_name ();
1012 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1013 const lookup_name_info
&name
)
1015 symbol_name_matcher_ftype
*name_match
1016 = get_symbol_name_matcher (language_def (gsymbol
->language
), name
);
1017 return name_match (gsymbol
->search_name (), name
, NULL
);
1022 /* Return true if the two sections are the same, or if they could
1023 plausibly be copies of each other, one in an original object
1024 file and another in a separated debug file. */
1027 matching_obj_sections (struct obj_section
*obj_first
,
1028 struct obj_section
*obj_second
)
1030 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1031 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1033 /* If they're the same section, then they match. */
1034 if (first
== second
)
1037 /* If either is NULL, give up. */
1038 if (first
== NULL
|| second
== NULL
)
1041 /* This doesn't apply to absolute symbols. */
1042 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1045 /* If they're in the same object file, they must be different sections. */
1046 if (first
->owner
== second
->owner
)
1049 /* Check whether the two sections are potentially corresponding. They must
1050 have the same size, address, and name. We can't compare section indexes,
1051 which would be more reliable, because some sections may have been
1053 if (bfd_section_size (first
) != bfd_section_size (second
))
1056 /* In-memory addresses may start at a different offset, relativize them. */
1057 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1058 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1061 if (bfd_section_name (first
) == NULL
1062 || bfd_section_name (second
) == NULL
1063 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1066 /* Otherwise check that they are in corresponding objfiles. */
1068 struct objfile
*obj
= NULL
;
1069 for (objfile
*objfile
: current_program_space
->objfiles ())
1070 if (objfile
->obfd
== first
->owner
)
1075 gdb_assert (obj
!= NULL
);
1077 if (obj
->separate_debug_objfile
!= NULL
1078 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1080 if (obj
->separate_debug_objfile_backlink
!= NULL
1081 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1090 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1092 struct bound_minimal_symbol msymbol
;
1094 /* If we know that this is not a text address, return failure. This is
1095 necessary because we loop based on texthigh and textlow, which do
1096 not include the data ranges. */
1097 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1098 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1101 for (objfile
*objfile
: current_program_space
->objfiles ())
1103 struct compunit_symtab
*cust
= NULL
;
1106 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1113 /* Hash function for the symbol cache. */
1116 hash_symbol_entry (const struct objfile
*objfile_context
,
1117 const char *name
, domain_enum domain
)
1119 unsigned int hash
= (uintptr_t) objfile_context
;
1122 hash
+= htab_hash_string (name
);
1124 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1125 to map to the same slot. */
1126 if (domain
== STRUCT_DOMAIN
)
1127 hash
+= VAR_DOMAIN
* 7;
1134 /* Equality function for the symbol cache. */
1137 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1138 const struct objfile
*objfile_context
,
1139 const char *name
, domain_enum domain
)
1141 const char *slot_name
;
1142 domain_enum slot_domain
;
1144 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1147 if (slot
->objfile_context
!= objfile_context
)
1150 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1152 slot_name
= slot
->value
.not_found
.name
;
1153 slot_domain
= slot
->value
.not_found
.domain
;
1157 slot_name
= slot
->value
.found
.symbol
->search_name ();
1158 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1161 /* NULL names match. */
1162 if (slot_name
== NULL
&& name
== NULL
)
1164 /* But there's no point in calling symbol_matches_domain in the
1165 SYMBOL_SLOT_FOUND case. */
1166 if (slot_domain
!= domain
)
1169 else if (slot_name
!= NULL
&& name
!= NULL
)
1171 /* It's important that we use the same comparison that was done
1172 the first time through. If the slot records a found symbol,
1173 then this means using the symbol name comparison function of
1174 the symbol's language with symbol->search_name (). See
1175 dictionary.c. It also means using symbol_matches_domain for
1176 found symbols. See block.c.
1178 If the slot records a not-found symbol, then require a precise match.
1179 We could still be lax with whitespace like strcmp_iw though. */
1181 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1183 if (strcmp (slot_name
, name
) != 0)
1185 if (slot_domain
!= domain
)
1190 struct symbol
*sym
= slot
->value
.found
.symbol
;
1191 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1193 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1196 if (!symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1197 slot_domain
, domain
))
1203 /* Only one name is NULL. */
1210 /* Given a cache of size SIZE, return the size of the struct (with variable
1211 length array) in bytes. */
1214 symbol_cache_byte_size (unsigned int size
)
1216 return (sizeof (struct block_symbol_cache
)
1217 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1223 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1225 /* If there's no change in size, don't do anything.
1226 All caches have the same size, so we can just compare with the size
1227 of the global symbols cache. */
1228 if ((cache
->global_symbols
!= NULL
1229 && cache
->global_symbols
->size
== new_size
)
1230 || (cache
->global_symbols
== NULL
1234 xfree (cache
->global_symbols
);
1235 xfree (cache
->static_symbols
);
1239 cache
->global_symbols
= NULL
;
1240 cache
->static_symbols
= NULL
;
1244 size_t total_size
= symbol_cache_byte_size (new_size
);
1246 cache
->global_symbols
1247 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1248 cache
->static_symbols
1249 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1250 cache
->global_symbols
->size
= new_size
;
1251 cache
->static_symbols
->size
= new_size
;
1255 /* Return the symbol cache of PSPACE.
1256 Create one if it doesn't exist yet. */
1258 static struct symbol_cache
*
1259 get_symbol_cache (struct program_space
*pspace
)
1261 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1265 cache
= symbol_cache_key
.emplace (pspace
);
1266 resize_symbol_cache (cache
, symbol_cache_size
);
1272 /* Set the size of the symbol cache in all program spaces. */
1275 set_symbol_cache_size (unsigned int new_size
)
1277 struct program_space
*pspace
;
1279 ALL_PSPACES (pspace
)
1281 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1283 /* The pspace could have been created but not have a cache yet. */
1285 resize_symbol_cache (cache
, new_size
);
1289 /* Called when symbol-cache-size is set. */
1292 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1293 struct cmd_list_element
*c
)
1295 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1297 /* Restore the previous value.
1298 This is the value the "show" command prints. */
1299 new_symbol_cache_size
= symbol_cache_size
;
1301 error (_("Symbol cache size is too large, max is %u."),
1302 MAX_SYMBOL_CACHE_SIZE
);
1304 symbol_cache_size
= new_symbol_cache_size
;
1306 set_symbol_cache_size (symbol_cache_size
);
1309 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1310 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1311 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1312 failed (and thus this one will too), or NULL if the symbol is not present
1314 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1315 can be used to save the result of a full lookup attempt. */
1317 static struct block_symbol
1318 symbol_cache_lookup (struct symbol_cache
*cache
,
1319 struct objfile
*objfile_context
, enum block_enum block
,
1320 const char *name
, domain_enum domain
,
1321 struct block_symbol_cache
**bsc_ptr
,
1322 struct symbol_cache_slot
**slot_ptr
)
1324 struct block_symbol_cache
*bsc
;
1326 struct symbol_cache_slot
*slot
;
1328 if (block
== GLOBAL_BLOCK
)
1329 bsc
= cache
->global_symbols
;
1331 bsc
= cache
->static_symbols
;
1339 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1340 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1345 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1347 if (symbol_lookup_debug
)
1348 fprintf_unfiltered (gdb_stdlog
,
1349 "%s block symbol cache hit%s for %s, %s\n",
1350 block
== GLOBAL_BLOCK
? "Global" : "Static",
1351 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1352 ? " (not found)" : "",
1353 name
, domain_name (domain
));
1355 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1356 return SYMBOL_LOOKUP_FAILED
;
1357 return slot
->value
.found
;
1360 /* Symbol is not present in the cache. */
1362 if (symbol_lookup_debug
)
1364 fprintf_unfiltered (gdb_stdlog
,
1365 "%s block symbol cache miss for %s, %s\n",
1366 block
== GLOBAL_BLOCK
? "Global" : "Static",
1367 name
, domain_name (domain
));
1373 /* Clear out SLOT. */
1376 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
1378 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1379 xfree (slot
->value
.not_found
.name
);
1380 slot
->state
= SYMBOL_SLOT_UNUSED
;
1383 /* Mark SYMBOL as found in SLOT.
1384 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1385 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1386 necessarily the objfile the symbol was found in. */
1389 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1390 struct symbol_cache_slot
*slot
,
1391 struct objfile
*objfile_context
,
1392 struct symbol
*symbol
,
1393 const struct block
*block
)
1397 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1400 symbol_cache_clear_slot (slot
);
1402 slot
->state
= SYMBOL_SLOT_FOUND
;
1403 slot
->objfile_context
= objfile_context
;
1404 slot
->value
.found
.symbol
= symbol
;
1405 slot
->value
.found
.block
= block
;
1408 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1409 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1410 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1413 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1414 struct symbol_cache_slot
*slot
,
1415 struct objfile
*objfile_context
,
1416 const char *name
, domain_enum domain
)
1420 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1423 symbol_cache_clear_slot (slot
);
1425 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1426 slot
->objfile_context
= objfile_context
;
1427 slot
->value
.not_found
.name
= xstrdup (name
);
1428 slot
->value
.not_found
.domain
= domain
;
1431 /* Flush the symbol cache of PSPACE. */
1434 symbol_cache_flush (struct program_space
*pspace
)
1436 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1441 if (cache
->global_symbols
== NULL
)
1443 gdb_assert (symbol_cache_size
== 0);
1444 gdb_assert (cache
->static_symbols
== NULL
);
1448 /* If the cache is untouched since the last flush, early exit.
1449 This is important for performance during the startup of a program linked
1450 with 100s (or 1000s) of shared libraries. */
1451 if (cache
->global_symbols
->misses
== 0
1452 && cache
->static_symbols
->misses
== 0)
1455 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1456 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1458 for (pass
= 0; pass
< 2; ++pass
)
1460 struct block_symbol_cache
*bsc
1461 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1464 for (i
= 0; i
< bsc
->size
; ++i
)
1465 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1468 cache
->global_symbols
->hits
= 0;
1469 cache
->global_symbols
->misses
= 0;
1470 cache
->global_symbols
->collisions
= 0;
1471 cache
->static_symbols
->hits
= 0;
1472 cache
->static_symbols
->misses
= 0;
1473 cache
->static_symbols
->collisions
= 0;
1479 symbol_cache_dump (const struct symbol_cache
*cache
)
1483 if (cache
->global_symbols
== NULL
)
1485 printf_filtered (" <disabled>\n");
1489 for (pass
= 0; pass
< 2; ++pass
)
1491 const struct block_symbol_cache
*bsc
1492 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1496 printf_filtered ("Global symbols:\n");
1498 printf_filtered ("Static symbols:\n");
1500 for (i
= 0; i
< bsc
->size
; ++i
)
1502 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1506 switch (slot
->state
)
1508 case SYMBOL_SLOT_UNUSED
:
1510 case SYMBOL_SLOT_NOT_FOUND
:
1511 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1512 host_address_to_string (slot
->objfile_context
),
1513 slot
->value
.not_found
.name
,
1514 domain_name (slot
->value
.not_found
.domain
));
1516 case SYMBOL_SLOT_FOUND
:
1518 struct symbol
*found
= slot
->value
.found
.symbol
;
1519 const struct objfile
*context
= slot
->objfile_context
;
1521 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1522 host_address_to_string (context
),
1523 found
->print_name (),
1524 domain_name (SYMBOL_DOMAIN (found
)));
1532 /* The "mt print symbol-cache" command. */
1535 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1537 struct program_space
*pspace
;
1539 ALL_PSPACES (pspace
)
1541 struct symbol_cache
*cache
;
1543 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1545 pspace
->symfile_object_file
!= NULL
1546 ? objfile_name (pspace
->symfile_object_file
)
1547 : "(no object file)");
1549 /* If the cache hasn't been created yet, avoid creating one. */
1550 cache
= symbol_cache_key
.get (pspace
);
1552 printf_filtered (" <empty>\n");
1554 symbol_cache_dump (cache
);
1558 /* The "mt flush-symbol-cache" command. */
1561 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1563 struct program_space
*pspace
;
1565 ALL_PSPACES (pspace
)
1567 symbol_cache_flush (pspace
);
1571 /* Print usage statistics of CACHE. */
1574 symbol_cache_stats (struct symbol_cache
*cache
)
1578 if (cache
->global_symbols
== NULL
)
1580 printf_filtered (" <disabled>\n");
1584 for (pass
= 0; pass
< 2; ++pass
)
1586 const struct block_symbol_cache
*bsc
1587 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1592 printf_filtered ("Global block cache stats:\n");
1594 printf_filtered ("Static block cache stats:\n");
1596 printf_filtered (" size: %u\n", bsc
->size
);
1597 printf_filtered (" hits: %u\n", bsc
->hits
);
1598 printf_filtered (" misses: %u\n", bsc
->misses
);
1599 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1603 /* The "mt print symbol-cache-statistics" command. */
1606 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1608 struct program_space
*pspace
;
1610 ALL_PSPACES (pspace
)
1612 struct symbol_cache
*cache
;
1614 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1616 pspace
->symfile_object_file
!= NULL
1617 ? objfile_name (pspace
->symfile_object_file
)
1618 : "(no object file)");
1620 /* If the cache hasn't been created yet, avoid creating one. */
1621 cache
= symbol_cache_key
.get (pspace
);
1623 printf_filtered (" empty, no stats available\n");
1625 symbol_cache_stats (cache
);
1629 /* This module's 'new_objfile' observer. */
1632 symtab_new_objfile_observer (struct objfile
*objfile
)
1634 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1635 symbol_cache_flush (current_program_space
);
1638 /* This module's 'free_objfile' observer. */
1641 symtab_free_objfile_observer (struct objfile
*objfile
)
1643 symbol_cache_flush (objfile
->pspace
);
1646 /* Debug symbols usually don't have section information. We need to dig that
1647 out of the minimal symbols and stash that in the debug symbol. */
1650 fixup_section (struct general_symbol_info
*ginfo
,
1651 CORE_ADDR addr
, struct objfile
*objfile
)
1653 struct minimal_symbol
*msym
;
1655 /* First, check whether a minimal symbol with the same name exists
1656 and points to the same address. The address check is required
1657 e.g. on PowerPC64, where the minimal symbol for a function will
1658 point to the function descriptor, while the debug symbol will
1659 point to the actual function code. */
1660 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1662 ginfo
->section
= MSYMBOL_SECTION (msym
);
1665 /* Static, function-local variables do appear in the linker
1666 (minimal) symbols, but are frequently given names that won't
1667 be found via lookup_minimal_symbol(). E.g., it has been
1668 observed in frv-uclinux (ELF) executables that a static,
1669 function-local variable named "foo" might appear in the
1670 linker symbols as "foo.6" or "foo.3". Thus, there is no
1671 point in attempting to extend the lookup-by-name mechanism to
1672 handle this case due to the fact that there can be multiple
1675 So, instead, search the section table when lookup by name has
1676 failed. The ``addr'' and ``endaddr'' fields may have already
1677 been relocated. If so, the relocation offset (i.e. the
1678 ANOFFSET value) needs to be subtracted from these values when
1679 performing the comparison. We unconditionally subtract it,
1680 because, when no relocation has been performed, the ANOFFSET
1681 value will simply be zero.
1683 The address of the symbol whose section we're fixing up HAS
1684 NOT BEEN adjusted (relocated) yet. It can't have been since
1685 the section isn't yet known and knowing the section is
1686 necessary in order to add the correct relocation value. In
1687 other words, we wouldn't even be in this function (attempting
1688 to compute the section) if it were already known.
1690 Note that it is possible to search the minimal symbols
1691 (subtracting the relocation value if necessary) to find the
1692 matching minimal symbol, but this is overkill and much less
1693 efficient. It is not necessary to find the matching minimal
1694 symbol, only its section.
1696 Note that this technique (of doing a section table search)
1697 can fail when unrelocated section addresses overlap. For
1698 this reason, we still attempt a lookup by name prior to doing
1699 a search of the section table. */
1701 struct obj_section
*s
;
1704 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1706 int idx
= s
- objfile
->sections
;
1707 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1712 if (obj_section_addr (s
) - offset
<= addr
1713 && addr
< obj_section_endaddr (s
) - offset
)
1715 ginfo
->section
= idx
;
1720 /* If we didn't find the section, assume it is in the first
1721 section. If there is no allocated section, then it hardly
1722 matters what we pick, so just pick zero. */
1726 ginfo
->section
= fallback
;
1731 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1738 if (!SYMBOL_OBJFILE_OWNED (sym
))
1741 /* We either have an OBJFILE, or we can get at it from the sym's
1742 symtab. Anything else is a bug. */
1743 gdb_assert (objfile
|| symbol_symtab (sym
));
1745 if (objfile
== NULL
)
1746 objfile
= symbol_objfile (sym
);
1748 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1751 /* We should have an objfile by now. */
1752 gdb_assert (objfile
);
1754 switch (SYMBOL_CLASS (sym
))
1758 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1761 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1765 /* Nothing else will be listed in the minsyms -- no use looking
1770 fixup_section (sym
, addr
, objfile
);
1777 demangle_for_lookup_info::demangle_for_lookup_info
1778 (const lookup_name_info
&lookup_name
, language lang
)
1780 demangle_result_storage storage
;
1782 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1784 gdb::unique_xmalloc_ptr
<char> without_params
1785 = cp_remove_params_if_any (lookup_name
.name ().c_str (),
1786 lookup_name
.completion_mode ());
1788 if (without_params
!= NULL
)
1790 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1791 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1797 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1798 m_demangled_name
= lookup_name
.name ();
1800 m_demangled_name
= demangle_for_lookup (lookup_name
.name ().c_str (),
1806 const lookup_name_info
&
1807 lookup_name_info::match_any ()
1809 /* Lookup any symbol that "" would complete. I.e., this matches all
1811 static const lookup_name_info
lookup_name ({}, symbol_name_match_type::FULL
,
1817 /* Compute the demangled form of NAME as used by the various symbol
1818 lookup functions. The result can either be the input NAME
1819 directly, or a pointer to a buffer owned by the STORAGE object.
1821 For Ada, this function just returns NAME, unmodified.
1822 Normally, Ada symbol lookups are performed using the encoded name
1823 rather than the demangled name, and so it might seem to make sense
1824 for this function to return an encoded version of NAME.
1825 Unfortunately, we cannot do this, because this function is used in
1826 circumstances where it is not appropriate to try to encode NAME.
1827 For instance, when displaying the frame info, we demangle the name
1828 of each parameter, and then perform a symbol lookup inside our
1829 function using that demangled name. In Ada, certain functions
1830 have internally-generated parameters whose name contain uppercase
1831 characters. Encoding those name would result in those uppercase
1832 characters to become lowercase, and thus cause the symbol lookup
1836 demangle_for_lookup (const char *name
, enum language lang
,
1837 demangle_result_storage
&storage
)
1839 /* If we are using C++, D, or Go, demangle the name before doing a
1840 lookup, so we can always binary search. */
1841 if (lang
== language_cplus
)
1843 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1844 if (demangled_name
!= NULL
)
1845 return storage
.set_malloc_ptr (demangled_name
);
1847 /* If we were given a non-mangled name, canonicalize it
1848 according to the language (so far only for C++). */
1849 std::string canon
= cp_canonicalize_string (name
);
1850 if (!canon
.empty ())
1851 return storage
.swap_string (canon
);
1853 else if (lang
== language_d
)
1855 char *demangled_name
= d_demangle (name
, 0);
1856 if (demangled_name
!= NULL
)
1857 return storage
.set_malloc_ptr (demangled_name
);
1859 else if (lang
== language_go
)
1861 char *demangled_name
= go_demangle (name
, 0);
1862 if (demangled_name
!= NULL
)
1863 return storage
.set_malloc_ptr (demangled_name
);
1872 search_name_hash (enum language language
, const char *search_name
)
1874 return language_def (language
)->la_search_name_hash (search_name
);
1879 This function (or rather its subordinates) have a bunch of loops and
1880 it would seem to be attractive to put in some QUIT's (though I'm not really
1881 sure whether it can run long enough to be really important). But there
1882 are a few calls for which it would appear to be bad news to quit
1883 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1884 that there is C++ code below which can error(), but that probably
1885 doesn't affect these calls since they are looking for a known
1886 variable and thus can probably assume it will never hit the C++
1890 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1891 const domain_enum domain
, enum language lang
,
1892 struct field_of_this_result
*is_a_field_of_this
)
1894 demangle_result_storage storage
;
1895 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1897 return lookup_symbol_aux (modified_name
,
1898 symbol_name_match_type::FULL
,
1899 block
, domain
, lang
,
1900 is_a_field_of_this
);
1906 lookup_symbol (const char *name
, const struct block
*block
,
1908 struct field_of_this_result
*is_a_field_of_this
)
1910 return lookup_symbol_in_language (name
, block
, domain
,
1911 current_language
->la_language
,
1912 is_a_field_of_this
);
1918 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1921 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1922 block
, domain
, language_asm
, NULL
);
1928 lookup_language_this (const struct language_defn
*lang
,
1929 const struct block
*block
)
1931 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1934 if (symbol_lookup_debug
> 1)
1936 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1938 fprintf_unfiltered (gdb_stdlog
,
1939 "lookup_language_this (%s, %s (objfile %s))",
1940 lang
->la_name
, host_address_to_string (block
),
1941 objfile_debug_name (objfile
));
1948 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1949 symbol_name_match_type::SEARCH_NAME
,
1953 if (symbol_lookup_debug
> 1)
1955 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1957 host_address_to_string (sym
),
1958 host_address_to_string (block
));
1960 return (struct block_symbol
) {sym
, block
};
1962 if (BLOCK_FUNCTION (block
))
1964 block
= BLOCK_SUPERBLOCK (block
);
1967 if (symbol_lookup_debug
> 1)
1968 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1972 /* Given TYPE, a structure/union,
1973 return 1 if the component named NAME from the ultimate target
1974 structure/union is defined, otherwise, return 0. */
1977 check_field (struct type
*type
, const char *name
,
1978 struct field_of_this_result
*is_a_field_of_this
)
1982 /* The type may be a stub. */
1983 type
= check_typedef (type
);
1985 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1987 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1989 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1991 is_a_field_of_this
->type
= type
;
1992 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1997 /* C++: If it was not found as a data field, then try to return it
1998 as a pointer to a method. */
2000 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
2002 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2004 is_a_field_of_this
->type
= type
;
2005 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2010 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2011 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2017 /* Behave like lookup_symbol except that NAME is the natural name
2018 (e.g., demangled name) of the symbol that we're looking for. */
2020 static struct block_symbol
2021 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2022 const struct block
*block
,
2023 const domain_enum domain
, enum language language
,
2024 struct field_of_this_result
*is_a_field_of_this
)
2026 struct block_symbol result
;
2027 const struct language_defn
*langdef
;
2029 if (symbol_lookup_debug
)
2031 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2033 fprintf_unfiltered (gdb_stdlog
,
2034 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2035 name
, host_address_to_string (block
),
2037 ? objfile_debug_name (objfile
) : "NULL",
2038 domain_name (domain
), language_str (language
));
2041 /* Make sure we do something sensible with is_a_field_of_this, since
2042 the callers that set this parameter to some non-null value will
2043 certainly use it later. If we don't set it, the contents of
2044 is_a_field_of_this are undefined. */
2045 if (is_a_field_of_this
!= NULL
)
2046 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2048 /* Search specified block and its superiors. Don't search
2049 STATIC_BLOCK or GLOBAL_BLOCK. */
2051 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2052 if (result
.symbol
!= NULL
)
2054 if (symbol_lookup_debug
)
2056 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2057 host_address_to_string (result
.symbol
));
2062 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2063 check to see if NAME is a field of `this'. */
2065 langdef
= language_def (language
);
2067 /* Don't do this check if we are searching for a struct. It will
2068 not be found by check_field, but will be found by other
2070 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2072 result
= lookup_language_this (langdef
, block
);
2076 struct type
*t
= result
.symbol
->type
;
2078 /* I'm not really sure that type of this can ever
2079 be typedefed; just be safe. */
2080 t
= check_typedef (t
);
2081 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2082 t
= TYPE_TARGET_TYPE (t
);
2084 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2085 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2086 error (_("Internal error: `%s' is not an aggregate"),
2087 langdef
->la_name_of_this
);
2089 if (check_field (t
, name
, is_a_field_of_this
))
2091 if (symbol_lookup_debug
)
2093 fprintf_unfiltered (gdb_stdlog
,
2094 "lookup_symbol_aux (...) = NULL\n");
2101 /* Now do whatever is appropriate for LANGUAGE to look
2102 up static and global variables. */
2104 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2105 if (result
.symbol
!= NULL
)
2107 if (symbol_lookup_debug
)
2109 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2110 host_address_to_string (result
.symbol
));
2115 /* Now search all static file-level symbols. Not strictly correct,
2116 but more useful than an error. */
2118 result
= lookup_static_symbol (name
, domain
);
2119 if (symbol_lookup_debug
)
2121 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2122 result
.symbol
!= NULL
2123 ? host_address_to_string (result
.symbol
)
2129 /* Check to see if the symbol is defined in BLOCK or its superiors.
2130 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2132 static struct block_symbol
2133 lookup_local_symbol (const char *name
,
2134 symbol_name_match_type match_type
,
2135 const struct block
*block
,
2136 const domain_enum domain
,
2137 enum language language
)
2140 const struct block
*static_block
= block_static_block (block
);
2141 const char *scope
= block_scope (block
);
2143 /* Check if either no block is specified or it's a global block. */
2145 if (static_block
== NULL
)
2148 while (block
!= static_block
)
2150 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2152 return (struct block_symbol
) {sym
, block
};
2154 if (language
== language_cplus
|| language
== language_fortran
)
2156 struct block_symbol blocksym
2157 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2160 if (blocksym
.symbol
!= NULL
)
2164 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2166 block
= BLOCK_SUPERBLOCK (block
);
2169 /* We've reached the end of the function without finding a result. */
2177 lookup_objfile_from_block (const struct block
*block
)
2182 block
= block_global_block (block
);
2183 /* Look through all blockvectors. */
2184 for (objfile
*obj
: current_program_space
->objfiles ())
2186 for (compunit_symtab
*cust
: obj
->compunits ())
2187 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2190 if (obj
->separate_debug_objfile_backlink
)
2191 obj
= obj
->separate_debug_objfile_backlink
;
2203 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2204 const struct block
*block
,
2205 const domain_enum domain
)
2209 if (symbol_lookup_debug
> 1)
2211 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2213 fprintf_unfiltered (gdb_stdlog
,
2214 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2215 name
, host_address_to_string (block
),
2216 objfile_debug_name (objfile
),
2217 domain_name (domain
));
2220 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2223 if (symbol_lookup_debug
> 1)
2225 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2226 host_address_to_string (sym
));
2228 return fixup_symbol_section (sym
, NULL
);
2231 if (symbol_lookup_debug
> 1)
2232 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2239 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2240 enum block_enum block_index
,
2242 const domain_enum domain
)
2244 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2246 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2248 struct block_symbol result
2249 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2251 if (result
.symbol
!= nullptr)
2258 /* Check to see if the symbol is defined in one of the OBJFILE's
2259 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2260 depending on whether or not we want to search global symbols or
2263 static struct block_symbol
2264 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2265 enum block_enum block_index
, const char *name
,
2266 const domain_enum domain
)
2268 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2270 if (symbol_lookup_debug
> 1)
2272 fprintf_unfiltered (gdb_stdlog
,
2273 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2274 objfile_debug_name (objfile
),
2275 block_index
== GLOBAL_BLOCK
2276 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2277 name
, domain_name (domain
));
2280 for (compunit_symtab
*cust
: objfile
->compunits ())
2282 const struct blockvector
*bv
;
2283 const struct block
*block
;
2284 struct block_symbol result
;
2286 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2287 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2288 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2289 result
.block
= block
;
2290 if (result
.symbol
!= NULL
)
2292 if (symbol_lookup_debug
> 1)
2294 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2295 host_address_to_string (result
.symbol
),
2296 host_address_to_string (block
));
2298 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2304 if (symbol_lookup_debug
> 1)
2305 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2309 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2310 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2311 and all associated separate debug objfiles.
2313 Normally we only look in OBJFILE, and not any separate debug objfiles
2314 because the outer loop will cause them to be searched too. This case is
2315 different. Here we're called from search_symbols where it will only
2316 call us for the objfile that contains a matching minsym. */
2318 static struct block_symbol
2319 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2320 const char *linkage_name
,
2323 enum language lang
= current_language
->la_language
;
2324 struct objfile
*main_objfile
;
2326 demangle_result_storage storage
;
2327 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2329 if (objfile
->separate_debug_objfile_backlink
)
2330 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2332 main_objfile
= objfile
;
2334 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2336 struct block_symbol result
;
2338 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2339 modified_name
, domain
);
2340 if (result
.symbol
== NULL
)
2341 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2342 modified_name
, domain
);
2343 if (result
.symbol
!= NULL
)
2350 /* A helper function that throws an exception when a symbol was found
2351 in a psymtab but not in a symtab. */
2353 static void ATTRIBUTE_NORETURN
2354 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2355 struct compunit_symtab
*cust
)
2358 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2359 %s may be an inlined function, or may be a template function\n \
2360 (if a template, try specifying an instantiation: %s<type>)."),
2361 block_index
== GLOBAL_BLOCK
? "global" : "static",
2363 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2367 /* A helper function for various lookup routines that interfaces with
2368 the "quick" symbol table functions. */
2370 static struct block_symbol
2371 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2372 enum block_enum block_index
, const char *name
,
2373 const domain_enum domain
)
2375 struct compunit_symtab
*cust
;
2376 const struct blockvector
*bv
;
2377 const struct block
*block
;
2378 struct block_symbol result
;
2383 if (symbol_lookup_debug
> 1)
2385 fprintf_unfiltered (gdb_stdlog
,
2386 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2387 objfile_debug_name (objfile
),
2388 block_index
== GLOBAL_BLOCK
2389 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2390 name
, domain_name (domain
));
2393 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2396 if (symbol_lookup_debug
> 1)
2398 fprintf_unfiltered (gdb_stdlog
,
2399 "lookup_symbol_via_quick_fns (...) = NULL\n");
2404 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2405 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2406 result
.symbol
= block_lookup_symbol (block
, name
,
2407 symbol_name_match_type::FULL
, domain
);
2408 if (result
.symbol
== NULL
)
2409 error_in_psymtab_expansion (block_index
, name
, cust
);
2411 if (symbol_lookup_debug
> 1)
2413 fprintf_unfiltered (gdb_stdlog
,
2414 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2415 host_address_to_string (result
.symbol
),
2416 host_address_to_string (block
));
2419 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2420 result
.block
= block
;
2427 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2429 const struct block
*block
,
2430 const domain_enum domain
)
2432 struct block_symbol result
;
2434 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2435 the current objfile. Searching the current objfile first is useful
2436 for both matching user expectations as well as performance. */
2438 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2439 if (result
.symbol
!= NULL
)
2442 /* If we didn't find a definition for a builtin type in the static block,
2443 search for it now. This is actually the right thing to do and can be
2444 a massive performance win. E.g., when debugging a program with lots of
2445 shared libraries we could search all of them only to find out the
2446 builtin type isn't defined in any of them. This is common for types
2448 if (domain
== VAR_DOMAIN
)
2450 struct gdbarch
*gdbarch
;
2453 gdbarch
= target_gdbarch ();
2455 gdbarch
= block_gdbarch (block
);
2456 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2458 result
.block
= NULL
;
2459 if (result
.symbol
!= NULL
)
2463 return lookup_global_symbol (name
, block
, domain
);
2469 lookup_symbol_in_static_block (const char *name
,
2470 const struct block
*block
,
2471 const domain_enum domain
)
2473 const struct block
*static_block
= block_static_block (block
);
2476 if (static_block
== NULL
)
2479 if (symbol_lookup_debug
)
2481 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2483 fprintf_unfiltered (gdb_stdlog
,
2484 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2487 host_address_to_string (block
),
2488 objfile_debug_name (objfile
),
2489 domain_name (domain
));
2492 sym
= lookup_symbol_in_block (name
,
2493 symbol_name_match_type::FULL
,
2494 static_block
, domain
);
2495 if (symbol_lookup_debug
)
2497 fprintf_unfiltered (gdb_stdlog
,
2498 "lookup_symbol_in_static_block (...) = %s\n",
2499 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2501 return (struct block_symbol
) {sym
, static_block
};
2504 /* Perform the standard symbol lookup of NAME in OBJFILE:
2505 1) First search expanded symtabs, and if not found
2506 2) Search the "quick" symtabs (partial or .gdb_index).
2507 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2509 static struct block_symbol
2510 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2511 const char *name
, const domain_enum domain
)
2513 struct block_symbol result
;
2515 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2517 if (symbol_lookup_debug
)
2519 fprintf_unfiltered (gdb_stdlog
,
2520 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2521 objfile_debug_name (objfile
),
2522 block_index
== GLOBAL_BLOCK
2523 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2524 name
, domain_name (domain
));
2527 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2529 if (result
.symbol
!= NULL
)
2531 if (symbol_lookup_debug
)
2533 fprintf_unfiltered (gdb_stdlog
,
2534 "lookup_symbol_in_objfile (...) = %s"
2536 host_address_to_string (result
.symbol
));
2541 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2543 if (symbol_lookup_debug
)
2545 fprintf_unfiltered (gdb_stdlog
,
2546 "lookup_symbol_in_objfile (...) = %s%s\n",
2547 result
.symbol
!= NULL
2548 ? host_address_to_string (result
.symbol
)
2550 result
.symbol
!= NULL
? " (via quick fns)" : "");
2555 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2557 struct global_or_static_sym_lookup_data
2559 /* The name of the symbol we are searching for. */
2562 /* The domain to use for our search. */
2565 /* The block index in which to search. */
2566 enum block_enum block_index
;
2568 /* The field where the callback should store the symbol if found.
2569 It should be initialized to {NULL, NULL} before the search is started. */
2570 struct block_symbol result
;
2573 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2574 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2575 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2576 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2579 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2582 struct global_or_static_sym_lookup_data
*data
=
2583 (struct global_or_static_sym_lookup_data
*) cb_data
;
2585 gdb_assert (data
->result
.symbol
== NULL
2586 && data
->result
.block
== NULL
);
2588 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2589 data
->name
, data
->domain
);
2591 /* If we found a match, tell the iterator to stop. Otherwise,
2593 return (data
->result
.symbol
!= NULL
);
2596 /* This function contains the common code of lookup_{global,static}_symbol.
2597 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2598 the objfile to start the lookup in. */
2600 static struct block_symbol
2601 lookup_global_or_static_symbol (const char *name
,
2602 enum block_enum block_index
,
2603 struct objfile
*objfile
,
2604 const domain_enum domain
)
2606 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2607 struct block_symbol result
;
2608 struct global_or_static_sym_lookup_data lookup_data
;
2609 struct block_symbol_cache
*bsc
;
2610 struct symbol_cache_slot
*slot
;
2612 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2613 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2615 /* First see if we can find the symbol in the cache.
2616 This works because we use the current objfile to qualify the lookup. */
2617 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2619 if (result
.symbol
!= NULL
)
2621 if (SYMBOL_LOOKUP_FAILED_P (result
))
2626 /* Do a global search (of global blocks, heh). */
2627 if (result
.symbol
== NULL
)
2629 memset (&lookup_data
, 0, sizeof (lookup_data
));
2630 lookup_data
.name
= name
;
2631 lookup_data
.block_index
= block_index
;
2632 lookup_data
.domain
= domain
;
2633 gdbarch_iterate_over_objfiles_in_search_order
2634 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
2635 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2636 result
= lookup_data
.result
;
2639 if (result
.symbol
!= NULL
)
2640 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2642 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2650 lookup_static_symbol (const char *name
, const domain_enum domain
)
2652 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2658 lookup_global_symbol (const char *name
,
2659 const struct block
*block
,
2660 const domain_enum domain
)
2662 /* If a block was passed in, we want to search the corresponding
2663 global block first. This yields "more expected" behavior, and is
2664 needed to support 'FILENAME'::VARIABLE lookups. */
2665 const struct block
*global_block
= block_global_block (block
);
2666 if (global_block
!= nullptr)
2668 symbol
*sym
= lookup_symbol_in_block (name
,
2669 symbol_name_match_type::FULL
,
2670 global_block
, domain
);
2672 return { sym
, global_block
};
2675 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2676 return lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2680 symbol_matches_domain (enum language symbol_language
,
2681 domain_enum symbol_domain
,
2684 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2685 Similarly, any Ada type declaration implicitly defines a typedef. */
2686 if (symbol_language
== language_cplus
2687 || symbol_language
== language_d
2688 || symbol_language
== language_ada
2689 || symbol_language
== language_rust
)
2691 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2692 && symbol_domain
== STRUCT_DOMAIN
)
2695 /* For all other languages, strict match is required. */
2696 return (symbol_domain
== domain
);
2702 lookup_transparent_type (const char *name
)
2704 return current_language
->la_lookup_transparent_type (name
);
2707 /* A helper for basic_lookup_transparent_type that interfaces with the
2708 "quick" symbol table functions. */
2710 static struct type
*
2711 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2712 enum block_enum block_index
,
2715 struct compunit_symtab
*cust
;
2716 const struct blockvector
*bv
;
2717 const struct block
*block
;
2722 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2727 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2728 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2729 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2730 block_find_non_opaque_type
, NULL
);
2732 error_in_psymtab_expansion (block_index
, name
, cust
);
2733 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2734 return SYMBOL_TYPE (sym
);
2737 /* Subroutine of basic_lookup_transparent_type to simplify it.
2738 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2739 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2741 static struct type
*
2742 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2743 enum block_enum block_index
,
2746 const struct blockvector
*bv
;
2747 const struct block
*block
;
2748 const struct symbol
*sym
;
2750 for (compunit_symtab
*cust
: objfile
->compunits ())
2752 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2753 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2754 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2755 block_find_non_opaque_type
, NULL
);
2758 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2759 return SYMBOL_TYPE (sym
);
2766 /* The standard implementation of lookup_transparent_type. This code
2767 was modeled on lookup_symbol -- the parts not relevant to looking
2768 up types were just left out. In particular it's assumed here that
2769 types are available in STRUCT_DOMAIN and only in file-static or
2773 basic_lookup_transparent_type (const char *name
)
2777 /* Now search all the global symbols. Do the symtab's first, then
2778 check the psymtab's. If a psymtab indicates the existence
2779 of the desired name as a global, then do psymtab-to-symtab
2780 conversion on the fly and return the found symbol. */
2782 for (objfile
*objfile
: current_program_space
->objfiles ())
2784 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2789 for (objfile
*objfile
: current_program_space
->objfiles ())
2791 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2796 /* Now search the static file-level symbols.
2797 Not strictly correct, but more useful than an error.
2798 Do the symtab's first, then
2799 check the psymtab's. If a psymtab indicates the existence
2800 of the desired name as a file-level static, then do psymtab-to-symtab
2801 conversion on the fly and return the found symbol. */
2803 for (objfile
*objfile
: current_program_space
->objfiles ())
2805 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2810 for (objfile
*objfile
: current_program_space
->objfiles ())
2812 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2817 return (struct type
*) 0;
2823 iterate_over_symbols (const struct block
*block
,
2824 const lookup_name_info
&name
,
2825 const domain_enum domain
,
2826 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2828 struct block_iterator iter
;
2831 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2833 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2834 SYMBOL_DOMAIN (sym
), domain
))
2836 struct block_symbol block_sym
= {sym
, block
};
2838 if (!callback (&block_sym
))
2848 iterate_over_symbols_terminated
2849 (const struct block
*block
,
2850 const lookup_name_info
&name
,
2851 const domain_enum domain
,
2852 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2854 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2856 struct block_symbol block_sym
= {nullptr, block
};
2857 return callback (&block_sym
);
2860 /* Find the compunit symtab associated with PC and SECTION.
2861 This will read in debug info as necessary. */
2863 struct compunit_symtab
*
2864 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2866 struct compunit_symtab
*best_cust
= NULL
;
2867 CORE_ADDR distance
= 0;
2868 struct bound_minimal_symbol msymbol
;
2870 /* If we know that this is not a text address, return failure. This is
2871 necessary because we loop based on the block's high and low code
2872 addresses, which do not include the data ranges, and because
2873 we call find_pc_sect_psymtab which has a similar restriction based
2874 on the partial_symtab's texthigh and textlow. */
2875 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2876 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2879 /* Search all symtabs for the one whose file contains our address, and which
2880 is the smallest of all the ones containing the address. This is designed
2881 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2882 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2883 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2885 This happens for native ecoff format, where code from included files
2886 gets its own symtab. The symtab for the included file should have
2887 been read in already via the dependency mechanism.
2888 It might be swifter to create several symtabs with the same name
2889 like xcoff does (I'm not sure).
2891 It also happens for objfiles that have their functions reordered.
2892 For these, the symtab we are looking for is not necessarily read in. */
2894 for (objfile
*obj_file
: current_program_space
->objfiles ())
2896 for (compunit_symtab
*cust
: obj_file
->compunits ())
2898 const struct block
*b
;
2899 const struct blockvector
*bv
;
2901 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2902 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2904 if (BLOCK_START (b
) <= pc
2905 && BLOCK_END (b
) > pc
2907 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2909 /* For an objfile that has its functions reordered,
2910 find_pc_psymtab will find the proper partial symbol table
2911 and we simply return its corresponding symtab. */
2912 /* In order to better support objfiles that contain both
2913 stabs and coff debugging info, we continue on if a psymtab
2915 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2917 struct compunit_symtab
*result
;
2920 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2930 struct block_iterator iter
;
2931 struct symbol
*sym
= NULL
;
2933 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2935 fixup_symbol_section (sym
, obj_file
);
2936 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2942 continue; /* No symbol in this symtab matches
2945 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2951 if (best_cust
!= NULL
)
2954 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2956 for (objfile
*objf
: current_program_space
->objfiles ())
2958 struct compunit_symtab
*result
;
2962 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2973 /* Find the compunit symtab associated with PC.
2974 This will read in debug info as necessary.
2975 Backward compatibility, no section. */
2977 struct compunit_symtab
*
2978 find_pc_compunit_symtab (CORE_ADDR pc
)
2980 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2986 find_symbol_at_address (CORE_ADDR address
)
2988 for (objfile
*objfile
: current_program_space
->objfiles ())
2990 if (objfile
->sf
== NULL
2991 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
2994 struct compunit_symtab
*symtab
2995 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
2998 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3000 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3002 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3003 struct block_iterator iter
;
3006 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3008 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3009 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3021 /* Find the source file and line number for a given PC value and SECTION.
3022 Return a structure containing a symtab pointer, a line number,
3023 and a pc range for the entire source line.
3024 The value's .pc field is NOT the specified pc.
3025 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3026 use the line that ends there. Otherwise, in that case, the line
3027 that begins there is used. */
3029 /* The big complication here is that a line may start in one file, and end just
3030 before the start of another file. This usually occurs when you #include
3031 code in the middle of a subroutine. To properly find the end of a line's PC
3032 range, we must search all symtabs associated with this compilation unit, and
3033 find the one whose first PC is closer than that of the next line in this
3036 struct symtab_and_line
3037 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3039 struct compunit_symtab
*cust
;
3040 struct linetable
*l
;
3042 struct linetable_entry
*item
;
3043 const struct blockvector
*bv
;
3044 struct bound_minimal_symbol msymbol
;
3046 /* Info on best line seen so far, and where it starts, and its file. */
3048 struct linetable_entry
*best
= NULL
;
3049 CORE_ADDR best_end
= 0;
3050 struct symtab
*best_symtab
= 0;
3052 /* Store here the first line number
3053 of a file which contains the line at the smallest pc after PC.
3054 If we don't find a line whose range contains PC,
3055 we will use a line one less than this,
3056 with a range from the start of that file to the first line's pc. */
3057 struct linetable_entry
*alt
= NULL
;
3059 /* Info on best line seen in this file. */
3061 struct linetable_entry
*prev
;
3063 /* If this pc is not from the current frame,
3064 it is the address of the end of a call instruction.
3065 Quite likely that is the start of the following statement.
3066 But what we want is the statement containing the instruction.
3067 Fudge the pc to make sure we get that. */
3069 /* It's tempting to assume that, if we can't find debugging info for
3070 any function enclosing PC, that we shouldn't search for line
3071 number info, either. However, GAS can emit line number info for
3072 assembly files --- very helpful when debugging hand-written
3073 assembly code. In such a case, we'd have no debug info for the
3074 function, but we would have line info. */
3079 /* elz: added this because this function returned the wrong
3080 information if the pc belongs to a stub (import/export)
3081 to call a shlib function. This stub would be anywhere between
3082 two functions in the target, and the line info was erroneously
3083 taken to be the one of the line before the pc. */
3085 /* RT: Further explanation:
3087 * We have stubs (trampolines) inserted between procedures.
3089 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3090 * exists in the main image.
3092 * In the minimal symbol table, we have a bunch of symbols
3093 * sorted by start address. The stubs are marked as "trampoline",
3094 * the others appear as text. E.g.:
3096 * Minimal symbol table for main image
3097 * main: code for main (text symbol)
3098 * shr1: stub (trampoline symbol)
3099 * foo: code for foo (text symbol)
3101 * Minimal symbol table for "shr1" image:
3103 * shr1: code for shr1 (text symbol)
3106 * So the code below is trying to detect if we are in the stub
3107 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3108 * and if found, do the symbolization from the real-code address
3109 * rather than the stub address.
3111 * Assumptions being made about the minimal symbol table:
3112 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3113 * if we're really in the trampoline.s If we're beyond it (say
3114 * we're in "foo" in the above example), it'll have a closer
3115 * symbol (the "foo" text symbol for example) and will not
3116 * return the trampoline.
3117 * 2. lookup_minimal_symbol_text() will find a real text symbol
3118 * corresponding to the trampoline, and whose address will
3119 * be different than the trampoline address. I put in a sanity
3120 * check for the address being the same, to avoid an
3121 * infinite recursion.
3123 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3124 if (msymbol
.minsym
!= NULL
)
3125 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3127 struct bound_minimal_symbol mfunsym
3128 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3131 if (mfunsym
.minsym
== NULL
)
3132 /* I eliminated this warning since it is coming out
3133 * in the following situation:
3134 * gdb shmain // test program with shared libraries
3135 * (gdb) break shr1 // function in shared lib
3136 * Warning: In stub for ...
3137 * In the above situation, the shared lib is not loaded yet,
3138 * so of course we can't find the real func/line info,
3139 * but the "break" still works, and the warning is annoying.
3140 * So I commented out the warning. RT */
3141 /* warning ("In stub for %s; unable to find real function/line info",
3142 msymbol->linkage_name ()); */
3145 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3146 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3147 /* Avoid infinite recursion */
3148 /* See above comment about why warning is commented out. */
3149 /* warning ("In stub for %s; unable to find real function/line info",
3150 msymbol->linkage_name ()); */
3154 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3157 symtab_and_line val
;
3158 val
.pspace
= current_program_space
;
3160 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3163 /* If no symbol information, return previous pc. */
3170 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3172 /* Look at all the symtabs that share this blockvector.
3173 They all have the same apriori range, that we found was right;
3174 but they have different line tables. */
3176 for (symtab
*iter_s
: compunit_filetabs (cust
))
3178 /* Find the best line in this symtab. */
3179 l
= SYMTAB_LINETABLE (iter_s
);
3185 /* I think len can be zero if the symtab lacks line numbers
3186 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3187 I'm not sure which, and maybe it depends on the symbol
3193 item
= l
->item
; /* Get first line info. */
3195 /* Is this file's first line closer than the first lines of other files?
3196 If so, record this file, and its first line, as best alternate. */
3197 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3200 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3201 const struct linetable_entry
& lhs
)->bool
3203 return comp_pc
< lhs
.pc
;
3206 struct linetable_entry
*first
= item
;
3207 struct linetable_entry
*last
= item
+ len
;
3208 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3210 prev
= item
- 1; /* Found a matching item. */
3212 /* At this point, prev points at the line whose start addr is <= pc, and
3213 item points at the next line. If we ran off the end of the linetable
3214 (pc >= start of the last line), then prev == item. If pc < start of
3215 the first line, prev will not be set. */
3217 /* Is this file's best line closer than the best in the other files?
3218 If so, record this file, and its best line, as best so far. Don't
3219 save prev if it represents the end of a function (i.e. line number
3220 0) instead of a real line. */
3222 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3225 best_symtab
= iter_s
;
3227 /* Discard BEST_END if it's before the PC of the current BEST. */
3228 if (best_end
<= best
->pc
)
3232 /* If another line (denoted by ITEM) is in the linetable and its
3233 PC is after BEST's PC, but before the current BEST_END, then
3234 use ITEM's PC as the new best_end. */
3235 if (best
&& item
< last
&& item
->pc
> best
->pc
3236 && (best_end
== 0 || best_end
> item
->pc
))
3237 best_end
= item
->pc
;
3242 /* If we didn't find any line number info, just return zeros.
3243 We used to return alt->line - 1 here, but that could be
3244 anywhere; if we don't have line number info for this PC,
3245 don't make some up. */
3248 else if (best
->line
== 0)
3250 /* If our best fit is in a range of PC's for which no line
3251 number info is available (line number is zero) then we didn't
3252 find any valid line information. */
3257 val
.symtab
= best_symtab
;
3258 val
.line
= best
->line
;
3260 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3265 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3267 val
.section
= section
;
3271 /* Backward compatibility (no section). */
3273 struct symtab_and_line
3274 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3276 struct obj_section
*section
;
3278 section
= find_pc_overlay (pc
);
3279 if (pc_in_unmapped_range (pc
, section
))
3280 pc
= overlay_mapped_address (pc
, section
);
3281 return find_pc_sect_line (pc
, section
, notcurrent
);
3287 find_pc_line_symtab (CORE_ADDR pc
)
3289 struct symtab_and_line sal
;
3291 /* This always passes zero for NOTCURRENT to find_pc_line.
3292 There are currently no callers that ever pass non-zero. */
3293 sal
= find_pc_line (pc
, 0);
3297 /* Find line number LINE in any symtab whose name is the same as
3300 If found, return the symtab that contains the linetable in which it was
3301 found, set *INDEX to the index in the linetable of the best entry
3302 found, and set *EXACT_MATCH to true if the value returned is an
3305 If not found, return NULL. */
3308 find_line_symtab (struct symtab
*sym_tab
, int line
,
3309 int *index
, bool *exact_match
)
3311 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3313 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3317 struct linetable
*best_linetable
;
3318 struct symtab
*best_symtab
;
3320 /* First try looking it up in the given symtab. */
3321 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3322 best_symtab
= sym_tab
;
3323 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3324 if (best_index
< 0 || !exact
)
3326 /* Didn't find an exact match. So we better keep looking for
3327 another symtab with the same name. In the case of xcoff,
3328 multiple csects for one source file (produced by IBM's FORTRAN
3329 compiler) produce multiple symtabs (this is unavoidable
3330 assuming csects can be at arbitrary places in memory and that
3331 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3333 /* BEST is the smallest linenumber > LINE so far seen,
3334 or 0 if none has been seen so far.
3335 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3338 if (best_index
>= 0)
3339 best
= best_linetable
->item
[best_index
].line
;
3343 for (objfile
*objfile
: current_program_space
->objfiles ())
3346 objfile
->sf
->qf
->expand_symtabs_with_fullname
3347 (objfile
, symtab_to_fullname (sym_tab
));
3350 for (objfile
*objfile
: current_program_space
->objfiles ())
3352 for (compunit_symtab
*cu
: objfile
->compunits ())
3354 for (symtab
*s
: compunit_filetabs (cu
))
3356 struct linetable
*l
;
3359 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3361 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3362 symtab_to_fullname (s
)) != 0)
3364 l
= SYMTAB_LINETABLE (s
);
3365 ind
= find_line_common (l
, line
, &exact
, 0);
3375 if (best
== 0 || l
->item
[ind
].line
< best
)
3377 best
= l
->item
[ind
].line
;
3392 *index
= best_index
;
3394 *exact_match
= (exact
!= 0);
3399 /* Given SYMTAB, returns all the PCs function in the symtab that
3400 exactly match LINE. Returns an empty vector if there are no exact
3401 matches, but updates BEST_ITEM in this case. */
3403 std::vector
<CORE_ADDR
>
3404 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3405 struct linetable_entry
**best_item
)
3408 std::vector
<CORE_ADDR
> result
;
3410 /* First, collect all the PCs that are at this line. */
3416 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3423 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3425 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
3431 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3439 /* Set the PC value for a given source file and line number and return true.
3440 Returns false for invalid line number (and sets the PC to 0).
3441 The source file is specified with a struct symtab. */
3444 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3446 struct linetable
*l
;
3453 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3456 l
= SYMTAB_LINETABLE (symtab
);
3457 *pc
= l
->item
[ind
].pc
;
3464 /* Find the range of pc values in a line.
3465 Store the starting pc of the line into *STARTPTR
3466 and the ending pc (start of next line) into *ENDPTR.
3467 Returns true to indicate success.
3468 Returns false if could not find the specified line. */
3471 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3474 CORE_ADDR startaddr
;
3475 struct symtab_and_line found_sal
;
3478 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3481 /* This whole function is based on address. For example, if line 10 has
3482 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3483 "info line *0x123" should say the line goes from 0x100 to 0x200
3484 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3485 This also insures that we never give a range like "starts at 0x134
3486 and ends at 0x12c". */
3488 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3489 if (found_sal
.line
!= sal
.line
)
3491 /* The specified line (sal) has zero bytes. */
3492 *startptr
= found_sal
.pc
;
3493 *endptr
= found_sal
.pc
;
3497 *startptr
= found_sal
.pc
;
3498 *endptr
= found_sal
.end
;
3503 /* Given a line table and a line number, return the index into the line
3504 table for the pc of the nearest line whose number is >= the specified one.
3505 Return -1 if none is found. The value is >= 0 if it is an index.
3506 START is the index at which to start searching the line table.
3508 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3511 find_line_common (struct linetable
*l
, int lineno
,
3512 int *exact_match
, int start
)
3517 /* BEST is the smallest linenumber > LINENO so far seen,
3518 or 0 if none has been seen so far.
3519 BEST_INDEX identifies the item for it. */
3521 int best_index
= -1;
3532 for (i
= start
; i
< len
; i
++)
3534 struct linetable_entry
*item
= &(l
->item
[i
]);
3536 if (item
->line
== lineno
)
3538 /* Return the first (lowest address) entry which matches. */
3543 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3550 /* If we got here, we didn't get an exact match. */
3555 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3557 struct symtab_and_line sal
;
3559 sal
= find_pc_line (pc
, 0);
3562 return sal
.symtab
!= 0;
3565 /* Helper for find_function_start_sal. Does most of the work, except
3566 setting the sal's symbol. */
3568 static symtab_and_line
3569 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3572 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3574 if (funfirstline
&& sal
.symtab
!= NULL
3575 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3576 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3578 struct gdbarch
*gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (sal
.symtab
));
3581 if (gdbarch_skip_entrypoint_p (gdbarch
))
3582 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3586 /* We always should have a line for the function start address.
3587 If we don't, something is odd. Create a plain SAL referring
3588 just the PC and hope that skip_prologue_sal (if requested)
3589 can find a line number for after the prologue. */
3590 if (sal
.pc
< func_addr
)
3593 sal
.pspace
= current_program_space
;
3595 sal
.section
= section
;
3599 skip_prologue_sal (&sal
);
3607 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3611 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3613 /* find_function_start_sal_1 does a linetable search, so it finds
3614 the symtab and linenumber, but not a symbol. Fill in the
3615 function symbol too. */
3616 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3624 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3626 fixup_symbol_section (sym
, NULL
);
3628 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3629 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3636 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3637 address for that function that has an entry in SYMTAB's line info
3638 table. If such an entry cannot be found, return FUNC_ADDR
3642 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3644 CORE_ADDR func_start
, func_end
;
3645 struct linetable
*l
;
3648 /* Give up if this symbol has no lineinfo table. */
3649 l
= SYMTAB_LINETABLE (symtab
);
3653 /* Get the range for the function's PC values, or give up if we
3654 cannot, for some reason. */
3655 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3658 /* Linetable entries are ordered by PC values, see the commentary in
3659 symtab.h where `struct linetable' is defined. Thus, the first
3660 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3661 address we are looking for. */
3662 for (i
= 0; i
< l
->nitems
; i
++)
3664 struct linetable_entry
*item
= &(l
->item
[i
]);
3666 /* Don't use line numbers of zero, they mark special entries in
3667 the table. See the commentary on symtab.h before the
3668 definition of struct linetable. */
3669 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3676 /* Adjust SAL to the first instruction past the function prologue.
3677 If the PC was explicitly specified, the SAL is not changed.
3678 If the line number was explicitly specified then the SAL can still be
3679 updated, unless the language for SAL is assembler, in which case the SAL
3680 will be left unchanged.
3681 If SAL is already past the prologue, then do nothing. */
3684 skip_prologue_sal (struct symtab_and_line
*sal
)
3687 struct symtab_and_line start_sal
;
3688 CORE_ADDR pc
, saved_pc
;
3689 struct obj_section
*section
;
3691 struct objfile
*objfile
;
3692 struct gdbarch
*gdbarch
;
3693 const struct block
*b
, *function_block
;
3694 int force_skip
, skip
;
3696 /* Do not change the SAL if PC was specified explicitly. */
3697 if (sal
->explicit_pc
)
3700 /* In assembly code, if the user asks for a specific line then we should
3701 not adjust the SAL. The user already has instruction level
3702 visibility in this case, so selecting a line other than one requested
3703 is likely to be the wrong choice. */
3704 if (sal
->symtab
!= nullptr
3705 && sal
->explicit_line
3706 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3709 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3711 switch_to_program_space_and_thread (sal
->pspace
);
3713 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3716 fixup_symbol_section (sym
, NULL
);
3718 objfile
= symbol_objfile (sym
);
3719 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3720 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3721 name
= sym
->linkage_name ();
3725 struct bound_minimal_symbol msymbol
3726 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3728 if (msymbol
.minsym
== NULL
)
3731 objfile
= msymbol
.objfile
;
3732 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3733 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3734 name
= msymbol
.minsym
->linkage_name ();
3737 gdbarch
= get_objfile_arch (objfile
);
3739 /* Process the prologue in two passes. In the first pass try to skip the
3740 prologue (SKIP is true) and verify there is a real need for it (indicated
3741 by FORCE_SKIP). If no such reason was found run a second pass where the
3742 prologue is not skipped (SKIP is false). */
3747 /* Be conservative - allow direct PC (without skipping prologue) only if we
3748 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3749 have to be set by the caller so we use SYM instead. */
3751 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3759 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3760 so that gdbarch_skip_prologue has something unique to work on. */
3761 if (section_is_overlay (section
) && !section_is_mapped (section
))
3762 pc
= overlay_unmapped_address (pc
, section
);
3764 /* Skip "first line" of function (which is actually its prologue). */
3765 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3766 if (gdbarch_skip_entrypoint_p (gdbarch
))
3767 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3769 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3771 /* For overlays, map pc back into its mapped VMA range. */
3772 pc
= overlay_mapped_address (pc
, section
);
3774 /* Calculate line number. */
3775 start_sal
= find_pc_sect_line (pc
, section
, 0);
3777 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3778 line is still part of the same function. */
3779 if (skip
&& start_sal
.pc
!= pc
3780 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3781 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3782 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3783 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3785 /* First pc of next line */
3787 /* Recalculate the line number (might not be N+1). */
3788 start_sal
= find_pc_sect_line (pc
, section
, 0);
3791 /* On targets with executable formats that don't have a concept of
3792 constructors (ELF with .init has, PE doesn't), gcc emits a call
3793 to `__main' in `main' between the prologue and before user
3795 if (gdbarch_skip_main_prologue_p (gdbarch
)
3796 && name
&& strcmp_iw (name
, "main") == 0)
3798 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3799 /* Recalculate the line number (might not be N+1). */
3800 start_sal
= find_pc_sect_line (pc
, section
, 0);
3804 while (!force_skip
&& skip
--);
3806 /* If we still don't have a valid source line, try to find the first
3807 PC in the lineinfo table that belongs to the same function. This
3808 happens with COFF debug info, which does not seem to have an
3809 entry in lineinfo table for the code after the prologue which has
3810 no direct relation to source. For example, this was found to be
3811 the case with the DJGPP target using "gcc -gcoff" when the
3812 compiler inserted code after the prologue to make sure the stack
3814 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3816 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3817 /* Recalculate the line number. */
3818 start_sal
= find_pc_sect_line (pc
, section
, 0);
3821 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3822 forward SAL to the end of the prologue. */
3827 sal
->section
= section
;
3828 sal
->symtab
= start_sal
.symtab
;
3829 sal
->line
= start_sal
.line
;
3830 sal
->end
= start_sal
.end
;
3832 /* Check if we are now inside an inlined function. If we can,
3833 use the call site of the function instead. */
3834 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3835 function_block
= NULL
;
3838 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3840 else if (BLOCK_FUNCTION (b
) != NULL
)
3842 b
= BLOCK_SUPERBLOCK (b
);
3844 if (function_block
!= NULL
3845 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3847 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3848 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3852 /* Given PC at the function's start address, attempt to find the
3853 prologue end using SAL information. Return zero if the skip fails.
3855 A non-optimized prologue traditionally has one SAL for the function
3856 and a second for the function body. A single line function has
3857 them both pointing at the same line.
3859 An optimized prologue is similar but the prologue may contain
3860 instructions (SALs) from the instruction body. Need to skip those
3861 while not getting into the function body.
3863 The functions end point and an increasing SAL line are used as
3864 indicators of the prologue's endpoint.
3866 This code is based on the function refine_prologue_limit
3870 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3872 struct symtab_and_line prologue_sal
;
3875 const struct block
*bl
;
3877 /* Get an initial range for the function. */
3878 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3879 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3881 prologue_sal
= find_pc_line (start_pc
, 0);
3882 if (prologue_sal
.line
!= 0)
3884 /* For languages other than assembly, treat two consecutive line
3885 entries at the same address as a zero-instruction prologue.
3886 The GNU assembler emits separate line notes for each instruction
3887 in a multi-instruction macro, but compilers generally will not
3889 if (prologue_sal
.symtab
->language
!= language_asm
)
3891 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3894 /* Skip any earlier lines, and any end-of-sequence marker
3895 from a previous function. */
3896 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3897 || linetable
->item
[idx
].line
== 0)
3900 if (idx
+1 < linetable
->nitems
3901 && linetable
->item
[idx
+1].line
!= 0
3902 && linetable
->item
[idx
+1].pc
== start_pc
)
3906 /* If there is only one sal that covers the entire function,
3907 then it is probably a single line function, like
3909 if (prologue_sal
.end
>= end_pc
)
3912 while (prologue_sal
.end
< end_pc
)
3914 struct symtab_and_line sal
;
3916 sal
= find_pc_line (prologue_sal
.end
, 0);
3919 /* Assume that a consecutive SAL for the same (or larger)
3920 line mark the prologue -> body transition. */
3921 if (sal
.line
>= prologue_sal
.line
)
3923 /* Likewise if we are in a different symtab altogether
3924 (e.g. within a file included via #include). */
3925 if (sal
.symtab
!= prologue_sal
.symtab
)
3928 /* The line number is smaller. Check that it's from the
3929 same function, not something inlined. If it's inlined,
3930 then there is no point comparing the line numbers. */
3931 bl
= block_for_pc (prologue_sal
.end
);
3934 if (block_inlined_p (bl
))
3936 if (BLOCK_FUNCTION (bl
))
3941 bl
= BLOCK_SUPERBLOCK (bl
);
3946 /* The case in which compiler's optimizer/scheduler has
3947 moved instructions into the prologue. We look ahead in
3948 the function looking for address ranges whose
3949 corresponding line number is less the first one that we
3950 found for the function. This is more conservative then
3951 refine_prologue_limit which scans a large number of SALs
3952 looking for any in the prologue. */
3957 if (prologue_sal
.end
< end_pc
)
3958 /* Return the end of this line, or zero if we could not find a
3960 return prologue_sal
.end
;
3962 /* Don't return END_PC, which is past the end of the function. */
3963 return prologue_sal
.pc
;
3969 find_function_alias_target (bound_minimal_symbol msymbol
)
3971 CORE_ADDR func_addr
;
3972 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
3975 symbol
*sym
= find_pc_function (func_addr
);
3977 && SYMBOL_CLASS (sym
) == LOC_BLOCK
3978 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
3985 /* If P is of the form "operator[ \t]+..." where `...' is
3986 some legitimate operator text, return a pointer to the
3987 beginning of the substring of the operator text.
3988 Otherwise, return "". */
3991 operator_chars (const char *p
, const char **end
)
3994 if (!startswith (p
, CP_OPERATOR_STR
))
3996 p
+= CP_OPERATOR_LEN
;
3998 /* Don't get faked out by `operator' being part of a longer
4000 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4003 /* Allow some whitespace between `operator' and the operator symbol. */
4004 while (*p
== ' ' || *p
== '\t')
4007 /* Recognize 'operator TYPENAME'. */
4009 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4011 const char *q
= p
+ 1;
4013 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4022 case '\\': /* regexp quoting */
4025 if (p
[2] == '=') /* 'operator\*=' */
4027 else /* 'operator\*' */
4031 else if (p
[1] == '[')
4034 error (_("mismatched quoting on brackets, "
4035 "try 'operator\\[\\]'"));
4036 else if (p
[2] == '\\' && p
[3] == ']')
4038 *end
= p
+ 4; /* 'operator\[\]' */
4042 error (_("nothing is allowed between '[' and ']'"));
4046 /* Gratuitous quote: skip it and move on. */
4068 if (p
[0] == '-' && p
[1] == '>')
4070 /* Struct pointer member operator 'operator->'. */
4073 *end
= p
+ 3; /* 'operator->*' */
4076 else if (p
[2] == '\\')
4078 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4083 *end
= p
+ 2; /* 'operator->' */
4087 if (p
[1] == '=' || p
[1] == p
[0])
4098 error (_("`operator ()' must be specified "
4099 "without whitespace in `()'"));
4104 error (_("`operator ?:' must be specified "
4105 "without whitespace in `?:'"));
4110 error (_("`operator []' must be specified "
4111 "without whitespace in `[]'"));
4115 error (_("`operator %s' not supported"), p
);
4124 /* What part to match in a file name. */
4126 struct filename_partial_match_opts
4128 /* Only match the directory name part. */
4129 bool dirname
= false;
4131 /* Only match the basename part. */
4132 bool basename
= false;
4135 /* Data structure to maintain printing state for output_source_filename. */
4137 struct output_source_filename_data
4139 /* Output only filenames matching REGEXP. */
4141 gdb::optional
<compiled_regex
> c_regexp
;
4142 /* Possibly only match a part of the filename. */
4143 filename_partial_match_opts partial_match
;
4146 /* Cache of what we've seen so far. */
4147 struct filename_seen_cache
*filename_seen_cache
;
4149 /* Flag of whether we're printing the first one. */
4153 /* Slave routine for sources_info. Force line breaks at ,'s.
4154 NAME is the name to print.
4155 DATA contains the state for printing and watching for duplicates. */
4158 output_source_filename (const char *name
,
4159 struct output_source_filename_data
*data
)
4161 /* Since a single source file can result in several partial symbol
4162 tables, we need to avoid printing it more than once. Note: if
4163 some of the psymtabs are read in and some are not, it gets
4164 printed both under "Source files for which symbols have been
4165 read" and "Source files for which symbols will be read in on
4166 demand". I consider this a reasonable way to deal with the
4167 situation. I'm not sure whether this can also happen for
4168 symtabs; it doesn't hurt to check. */
4170 /* Was NAME already seen? */
4171 if (data
->filename_seen_cache
->seen (name
))
4173 /* Yes; don't print it again. */
4177 /* Does it match data->regexp? */
4178 if (data
->c_regexp
.has_value ())
4180 const char *to_match
;
4181 std::string dirname
;
4183 if (data
->partial_match
.dirname
)
4185 dirname
= ldirname (name
);
4186 to_match
= dirname
.c_str ();
4188 else if (data
->partial_match
.basename
)
4189 to_match
= lbasename (name
);
4193 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4197 /* Print it and reset *FIRST. */
4199 printf_filtered (", ");
4203 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4206 /* A callback for map_partial_symbol_filenames. */
4209 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4212 output_source_filename (fullname
? fullname
: filename
,
4213 (struct output_source_filename_data
*) data
);
4216 using isrc_flag_option_def
4217 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4219 static const gdb::option::option_def info_sources_option_defs
[] = {
4221 isrc_flag_option_def
{
4223 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4224 N_("Show only the files having a dirname matching REGEXP."),
4227 isrc_flag_option_def
{
4229 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4230 N_("Show only the files having a basename matching REGEXP."),
4235 /* Create an option_def_group for the "info sources" options, with
4236 ISRC_OPTS as context. */
4238 static inline gdb::option::option_def_group
4239 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4241 return {{info_sources_option_defs
}, isrc_opts
};
4244 /* Prints the header message for the source files that will be printed
4245 with the matching info present in DATA. SYMBOL_MSG is a message
4246 that tells what will or has been done with the symbols of the
4247 matching source files. */
4250 print_info_sources_header (const char *symbol_msg
,
4251 const struct output_source_filename_data
*data
)
4253 puts_filtered (symbol_msg
);
4254 if (!data
->regexp
.empty ())
4256 if (data
->partial_match
.dirname
)
4257 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4258 data
->regexp
.c_str ());
4259 else if (data
->partial_match
.basename
)
4260 printf_filtered (_("(basename matching regular expression \"%s\")"),
4261 data
->regexp
.c_str ());
4263 printf_filtered (_("(filename matching regular expression \"%s\")"),
4264 data
->regexp
.c_str ());
4266 puts_filtered ("\n");
4269 /* Completer for "info sources". */
4272 info_sources_command_completer (cmd_list_element
*ignore
,
4273 completion_tracker
&tracker
,
4274 const char *text
, const char *word
)
4276 const auto group
= make_info_sources_options_def_group (nullptr);
4277 if (gdb::option::complete_options
4278 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4283 info_sources_command (const char *args
, int from_tty
)
4285 struct output_source_filename_data data
;
4287 if (!have_full_symbols () && !have_partial_symbols ())
4289 error (_("No symbol table is loaded. Use the \"file\" command."));
4292 filename_seen_cache filenames_seen
;
4294 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4296 gdb::option::process_options
4297 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4299 if (args
!= NULL
&& *args
!= '\000')
4302 data
.filename_seen_cache
= &filenames_seen
;
4305 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4306 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4307 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4308 && data
.regexp
.empty ())
4309 error (_("Missing REGEXP for 'info sources'."));
4311 if (data
.regexp
.empty ())
4312 data
.c_regexp
.reset ();
4315 int cflags
= REG_NOSUB
;
4316 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4317 cflags
|= REG_ICASE
;
4319 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4320 _("Invalid regexp"));
4323 print_info_sources_header
4324 (_("Source files for which symbols have been read in:\n"), &data
);
4326 for (objfile
*objfile
: current_program_space
->objfiles ())
4328 for (compunit_symtab
*cu
: objfile
->compunits ())
4330 for (symtab
*s
: compunit_filetabs (cu
))
4332 const char *fullname
= symtab_to_fullname (s
);
4334 output_source_filename (fullname
, &data
);
4338 printf_filtered ("\n\n");
4340 print_info_sources_header
4341 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4343 filenames_seen
.clear ();
4345 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4346 1 /*need_fullname*/);
4347 printf_filtered ("\n");
4350 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4351 true compare only lbasename of FILENAMES. */
4354 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4357 if (filenames
.empty ())
4360 for (const char *name
: filenames
)
4362 name
= (basenames
? lbasename (name
) : name
);
4363 if (compare_filenames_for_search (file
, name
))
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 (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4390 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4391 If SYM has no symbol_type or symbol_name, returns false. */
4394 treg_matches_sym_type_name (const compiled_regex
&treg
,
4395 const struct symbol
*sym
)
4397 struct type
*sym_type
;
4398 std::string printed_sym_type_name
;
4400 if (symbol_lookup_debug
> 1)
4402 fprintf_unfiltered (gdb_stdlog
,
4403 "treg_matches_sym_type_name\n sym %s\n",
4404 sym
->natural_name ());
4407 sym_type
= SYMBOL_TYPE (sym
);
4408 if (sym_type
== NULL
)
4412 scoped_switch_to_sym_language_if_auto
l (sym
);
4414 printed_sym_type_name
= type_to_string (sym_type
);
4418 if (symbol_lookup_debug
> 1)
4420 fprintf_unfiltered (gdb_stdlog
,
4421 " sym_type_name %s\n",
4422 printed_sym_type_name
.c_str ());
4426 if (printed_sym_type_name
.empty ())
4429 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4433 /* Sort the symbols in RESULT and remove duplicates. */
4436 sort_search_symbols_remove_dups (std::vector
<symbol_search
> *result
)
4438 std::sort (result
->begin (), result
->end ());
4439 result
->erase (std::unique (result
->begin (), result
->end ()),
4445 std::vector
<symbol_search
>
4446 global_symbol_searcher::search () const
4448 const struct blockvector
*bv
;
4449 const struct block
*b
;
4451 struct block_iterator iter
;
4454 static const enum minimal_symbol_type types
[]
4455 = {mst_data
, mst_text
, mst_unknown
};
4456 static const enum minimal_symbol_type types2
[]
4457 = {mst_bss
, mst_file_text
, mst_unknown
};
4458 static const enum minimal_symbol_type types3
[]
4459 = {mst_file_data
, mst_solib_trampoline
, mst_unknown
};
4460 static const enum minimal_symbol_type types4
[]
4461 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_unknown
};
4462 enum minimal_symbol_type ourtype
;
4463 enum minimal_symbol_type ourtype2
;
4464 enum minimal_symbol_type ourtype3
;
4465 enum minimal_symbol_type ourtype4
;
4466 std::vector
<symbol_search
> result
;
4467 gdb::optional
<compiled_regex
> preg
;
4468 gdb::optional
<compiled_regex
> treg
;
4470 gdb_assert (m_kind
!= ALL_DOMAIN
);
4472 ourtype
= types
[m_kind
];
4473 ourtype2
= types2
[m_kind
];
4474 ourtype3
= types3
[m_kind
];
4475 ourtype4
= types4
[m_kind
];
4477 if (m_symbol_name_regexp
!= NULL
)
4479 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4481 /* Make sure spacing is right for C++ operators.
4482 This is just a courtesy to make the matching less sensitive
4483 to how many spaces the user leaves between 'operator'
4484 and <TYPENAME> or <OPERATOR>. */
4486 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4490 int fix
= -1; /* -1 means ok; otherwise number of
4493 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4495 /* There should 1 space between 'operator' and 'TYPENAME'. */
4496 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4501 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4502 if (opname
[-1] == ' ')
4505 /* If wrong number of spaces, fix it. */
4508 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4510 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4511 symbol_name_regexp
= tmp
;
4515 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4517 preg
.emplace (symbol_name_regexp
, cflags
,
4518 _("Invalid regexp"));
4521 if (m_symbol_type_regexp
!= NULL
)
4523 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4525 treg
.emplace (m_symbol_type_regexp
, cflags
,
4526 _("Invalid regexp"));
4529 /* Search through the partial symtabs *first* for all symbols matching
4530 the m_symbol_name_regexp (in preg). That way we don't have to
4531 reproduce all of the machinery below. */
4532 expand_symtabs_matching ([&] (const char *filename
, bool basenames
)
4534 return file_matches (filename
, filenames
,
4537 lookup_name_info::match_any (),
4538 [&] (const char *symname
)
4540 return (!preg
.has_value ()
4541 || preg
->exec (symname
,
4547 /* Here, we search through the minimal symbol tables for functions
4548 and variables that match, and force their symbols to be read.
4549 This is in particular necessary for demangled variable names,
4550 which are no longer put into the partial symbol tables.
4551 The symbol will then be found during the scan of symtabs below.
4553 For functions, find_pc_symtab should succeed if we have debug info
4554 for the function, for variables we have to call
4555 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
4557 If the lookup fails, set found_misc so that we will rescan to print
4558 any matching symbols without debug info.
4559 We only search the objfile the msymbol came from, we no longer search
4560 all objfiles. In large programs (1000s of shared libs) searching all
4561 objfiles is not worth the pain. */
4563 if (filenames
.empty () && (m_kind
== VARIABLES_DOMAIN
4564 || m_kind
== FUNCTIONS_DOMAIN
))
4566 for (objfile
*objfile
: current_program_space
->objfiles ())
4568 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4572 if (msymbol
->created_by_gdb
)
4575 if (MSYMBOL_TYPE (msymbol
) == ourtype
4576 || MSYMBOL_TYPE (msymbol
) == ourtype2
4577 || MSYMBOL_TYPE (msymbol
) == ourtype3
4578 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4580 if (!preg
.has_value ()
4581 || preg
->exec (msymbol
->natural_name (), 0,
4584 /* Note: An important side-effect of these
4585 lookup functions is to expand the symbol
4586 table if msymbol is found, for the benefit of
4587 the next loop on compunits. */
4588 if (m_kind
== FUNCTIONS_DOMAIN
4589 ? (find_pc_compunit_symtab
4590 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4592 : (lookup_symbol_in_objfile_from_linkage_name
4593 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4602 for (objfile
*objfile
: current_program_space
->objfiles ())
4604 for (compunit_symtab
*cust
: objfile
->compunits ())
4606 bv
= COMPUNIT_BLOCKVECTOR (cust
);
4607 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
4609 b
= BLOCKVECTOR_BLOCK (bv
, i
);
4610 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4612 struct symtab
*real_symtab
= symbol_symtab (sym
);
4616 /* Check first sole REAL_SYMTAB->FILENAME. It does
4617 not need to be a substring of symtab_to_fullname as
4618 it may contain "./" etc. */
4619 if ((file_matches (real_symtab
->filename
, filenames
, false)
4620 || ((basenames_may_differ
4621 || file_matches (lbasename (real_symtab
->filename
),
4623 && file_matches (symtab_to_fullname (real_symtab
),
4625 && ((!preg
.has_value ()
4626 || preg
->exec (sym
->natural_name (), 0,
4628 && ((m_kind
== VARIABLES_DOMAIN
4629 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4630 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4631 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4632 /* LOC_CONST can be used for more than
4633 just enums, e.g., c++ static const
4634 members. We only want to skip enums
4636 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4637 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4639 && (!treg
.has_value ()
4640 || treg_matches_sym_type_name (*treg
, sym
)))
4641 || (m_kind
== FUNCTIONS_DOMAIN
4642 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4643 && (!treg
.has_value ()
4644 || treg_matches_sym_type_name (*treg
,
4646 || (m_kind
== TYPES_DOMAIN
4647 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4648 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4649 || (m_kind
== MODULES_DOMAIN
4650 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4651 && SYMBOL_LINE (sym
) != 0))))
4654 result
.emplace_back (i
, sym
);
4661 if (!result
.empty ())
4662 sort_search_symbols_remove_dups (&result
);
4664 /* If there are no debug symbols, then add matching minsyms. But if the
4665 user wants to see symbols matching a type m_symbol_type_regexp, then
4666 never give a minimal symbol, as we assume that a minimal symbol does
4669 if ((found_misc
|| (filenames
.empty () && m_kind
!= FUNCTIONS_DOMAIN
))
4670 && !m_exclude_minsyms
4671 && !treg
.has_value ())
4673 for (objfile
*objfile
: current_program_space
->objfiles ())
4675 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4679 if (msymbol
->created_by_gdb
)
4682 if (MSYMBOL_TYPE (msymbol
) == ourtype
4683 || MSYMBOL_TYPE (msymbol
) == ourtype2
4684 || MSYMBOL_TYPE (msymbol
) == ourtype3
4685 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4687 if (!preg
.has_value ()
4688 || preg
->exec (msymbol
->natural_name (), 0,
4691 /* For functions we can do a quick check of whether the
4692 symbol might be found via find_pc_symtab. */
4693 if (m_kind
!= FUNCTIONS_DOMAIN
4694 || (find_pc_compunit_symtab
4695 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4698 if (lookup_symbol_in_objfile_from_linkage_name
4699 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4703 result
.emplace_back (i
, msymbol
, objfile
);
4718 symbol_to_info_string (struct symbol
*sym
, int block
,
4719 enum search_domain kind
)
4723 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4725 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4728 /* Typedef that is not a C++ class. */
4729 if (kind
== TYPES_DOMAIN
4730 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4732 string_file tmp_stream
;
4734 /* FIXME: For C (and C++) we end up with a difference in output here
4735 between how a typedef is printed, and non-typedefs are printed.
4736 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4737 appear C-like, while TYPE_PRINT doesn't.
4739 For the struct printing case below, things are worse, we force
4740 printing of the ";" in this function, which is going to be wrong
4741 for languages that don't require a ";" between statements. */
4742 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4743 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4745 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4746 str
+= tmp_stream
.string ();
4748 /* variable, func, or typedef-that-is-c++-class. */
4749 else if (kind
< TYPES_DOMAIN
4750 || (kind
== TYPES_DOMAIN
4751 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4753 string_file tmp_stream
;
4755 type_print (SYMBOL_TYPE (sym
),
4756 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4757 ? "" : sym
->print_name ()),
4760 str
+= tmp_stream
.string ();
4763 /* Printing of modules is currently done here, maybe at some future
4764 point we might want a language specific method to print the module
4765 symbol so that we can customise the output more. */
4766 else if (kind
== MODULES_DOMAIN
)
4767 str
+= sym
->print_name ();
4772 /* Helper function for symbol info commands, for example 'info functions',
4773 'info variables', etc. KIND is the kind of symbol we searched for, and
4774 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4775 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4776 print file and line number information for the symbol as well. Skip
4777 printing the filename if it matches LAST. */
4780 print_symbol_info (enum search_domain kind
,
4782 int block
, const char *last
)
4784 scoped_switch_to_sym_language_if_auto
l (sym
);
4785 struct symtab
*s
= symbol_symtab (sym
);
4789 const char *s_filename
= symtab_to_filename_for_display (s
);
4791 if (filename_cmp (last
, s_filename
) != 0)
4793 printf_filtered (_("\nFile %ps:\n"),
4794 styled_string (file_name_style
.style (),
4798 if (SYMBOL_LINE (sym
) != 0)
4799 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4801 puts_filtered ("\t");
4804 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4805 printf_filtered ("%s\n", str
.c_str ());
4808 /* This help function for symtab_symbol_info() prints information
4809 for non-debugging symbols to gdb_stdout. */
4812 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4814 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
4817 if (gdbarch_addr_bit (gdbarch
) <= 32)
4818 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4819 & (CORE_ADDR
) 0xffffffff,
4822 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4825 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4826 ? function_name_style
.style ()
4827 : ui_file_style ());
4829 printf_filtered (_("%ps %ps\n"),
4830 styled_string (address_style
.style (), tmp
),
4831 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4834 /* This is the guts of the commands "info functions", "info types", and
4835 "info variables". It calls search_symbols to find all matches and then
4836 print_[m]symbol_info to print out some useful information about the
4840 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4841 const char *regexp
, enum search_domain kind
,
4842 const char *t_regexp
, int from_tty
)
4844 static const char * const classnames
[] =
4845 {"variable", "function", "type", "module"};
4846 const char *last_filename
= "";
4849 gdb_assert (kind
!= ALL_DOMAIN
);
4851 if (regexp
!= nullptr && *regexp
== '\0')
4854 global_symbol_searcher
spec (kind
, regexp
);
4855 spec
.set_symbol_type_regexp (t_regexp
);
4856 spec
.set_exclude_minsyms (exclude_minsyms
);
4857 std::vector
<symbol_search
> symbols
= spec
.search ();
4863 if (t_regexp
!= NULL
)
4865 (_("All %ss matching regular expression \"%s\""
4866 " with type matching regular expression \"%s\":\n"),
4867 classnames
[kind
], regexp
, t_regexp
);
4869 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4870 classnames
[kind
], regexp
);
4874 if (t_regexp
!= NULL
)
4876 (_("All defined %ss"
4877 " with type matching regular expression \"%s\" :\n"),
4878 classnames
[kind
], t_regexp
);
4880 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4884 for (const symbol_search
&p
: symbols
)
4888 if (p
.msymbol
.minsym
!= NULL
)
4893 printf_filtered (_("\nNon-debugging symbols:\n"));
4896 print_msymbol_info (p
.msymbol
);
4900 print_symbol_info (kind
,
4905 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
4910 /* Structure to hold the values of the options used by the 'info variables'
4911 and 'info functions' commands. These correspond to the -q, -t, and -n
4914 struct info_print_options
4917 bool exclude_minsyms
= false;
4918 char *type_regexp
= nullptr;
4920 ~info_print_options ()
4922 xfree (type_regexp
);
4926 /* The options used by the 'info variables' and 'info functions'
4929 static const gdb::option::option_def info_print_options_defs
[] = {
4930 gdb::option::boolean_option_def
<info_print_options
> {
4932 [] (info_print_options
*opt
) { return &opt
->quiet
; },
4933 nullptr, /* show_cmd_cb */
4934 nullptr /* set_doc */
4937 gdb::option::boolean_option_def
<info_print_options
> {
4939 [] (info_print_options
*opt
) { return &opt
->exclude_minsyms
; },
4940 nullptr, /* show_cmd_cb */
4941 nullptr /* set_doc */
4944 gdb::option::string_option_def
<info_print_options
> {
4946 [] (info_print_options
*opt
) { return &opt
->type_regexp
; },
4947 nullptr, /* show_cmd_cb */
4948 nullptr /* set_doc */
4952 /* Returns the option group used by 'info variables' and 'info
4955 static gdb::option::option_def_group
4956 make_info_print_options_def_group (info_print_options
*opts
)
4958 return {{info_print_options_defs
}, opts
};
4961 /* Command completer for 'info variables' and 'info functions'. */
4964 info_print_command_completer (struct cmd_list_element
*ignore
,
4965 completion_tracker
&tracker
,
4966 const char *text
, const char * /* word */)
4969 = make_info_print_options_def_group (nullptr);
4970 if (gdb::option::complete_options
4971 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4974 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
4975 symbol_completer (ignore
, tracker
, text
, word
);
4978 /* Implement the 'info variables' command. */
4981 info_variables_command (const char *args
, int from_tty
)
4983 info_print_options opts
;
4984 auto grp
= make_info_print_options_def_group (&opts
);
4985 gdb::option::process_options
4986 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
4987 if (args
!= nullptr && *args
== '\0')
4990 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
4991 opts
.type_regexp
, from_tty
);
4994 /* Implement the 'info functions' command. */
4997 info_functions_command (const char *args
, int from_tty
)
4999 info_print_options opts
;
5000 auto grp
= make_info_print_options_def_group (&opts
);
5001 gdb::option::process_options
5002 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5003 if (args
!= nullptr && *args
== '\0')
5006 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5007 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5010 /* Holds the -q option for the 'info types' command. */
5012 struct info_types_options
5017 /* The options used by the 'info types' command. */
5019 static const gdb::option::option_def info_types_options_defs
[] = {
5020 gdb::option::boolean_option_def
<info_types_options
> {
5022 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5023 nullptr, /* show_cmd_cb */
5024 nullptr /* set_doc */
5028 /* Returns the option group used by 'info types'. */
5030 static gdb::option::option_def_group
5031 make_info_types_options_def_group (info_types_options
*opts
)
5033 return {{info_types_options_defs
}, opts
};
5036 /* Implement the 'info types' command. */
5039 info_types_command (const char *args
, int from_tty
)
5041 info_types_options opts
;
5043 auto grp
= make_info_types_options_def_group (&opts
);
5044 gdb::option::process_options
5045 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5046 if (args
!= nullptr && *args
== '\0')
5048 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5051 /* Command completer for 'info types' command. */
5054 info_types_command_completer (struct cmd_list_element
*ignore
,
5055 completion_tracker
&tracker
,
5056 const char *text
, const char * /* word */)
5059 = make_info_types_options_def_group (nullptr);
5060 if (gdb::option::complete_options
5061 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5064 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5065 symbol_completer (ignore
, tracker
, text
, word
);
5068 /* Implement the 'info modules' command. */
5071 info_modules_command (const char *args
, int from_tty
)
5073 info_types_options opts
;
5075 auto grp
= make_info_types_options_def_group (&opts
);
5076 gdb::option::process_options
5077 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5078 if (args
!= nullptr && *args
== '\0')
5080 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5085 rbreak_command (const char *regexp
, int from_tty
)
5088 const char *file_name
= nullptr;
5090 if (regexp
!= nullptr)
5092 const char *colon
= strchr (regexp
, ':');
5094 if (colon
&& *(colon
+ 1) != ':')
5099 colon_index
= colon
- regexp
;
5100 local_name
= (char *) alloca (colon_index
+ 1);
5101 memcpy (local_name
, regexp
, colon_index
);
5102 local_name
[colon_index
--] = 0;
5103 while (isspace (local_name
[colon_index
]))
5104 local_name
[colon_index
--] = 0;
5105 file_name
= local_name
;
5106 regexp
= skip_spaces (colon
+ 1);
5110 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5111 if (file_name
!= nullptr)
5112 spec
.filenames
.push_back (file_name
);
5113 std::vector
<symbol_search
> symbols
= spec
.search ();
5115 scoped_rbreak_breakpoints finalize
;
5116 for (const symbol_search
&p
: symbols
)
5118 if (p
.msymbol
.minsym
== NULL
)
5120 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5121 const char *fullname
= symtab_to_fullname (symtab
);
5123 string
= string_printf ("%s:'%s'", fullname
,
5124 p
.symbol
->linkage_name ());
5125 break_command (&string
[0], from_tty
);
5126 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5130 string
= string_printf ("'%s'",
5131 p
.msymbol
.minsym
->linkage_name ());
5133 break_command (&string
[0], from_tty
);
5134 printf_filtered ("<function, no debug info> %s;\n",
5135 p
.msymbol
.minsym
->print_name ());
5141 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5144 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5145 const lookup_name_info
&lookup_name
,
5146 completion_match_result
&match_res
)
5148 const language_defn
*lang
= language_def (symbol_language
);
5150 symbol_name_matcher_ftype
*name_match
5151 = get_symbol_name_matcher (lang
, lookup_name
);
5153 return name_match (symbol_name
, lookup_name
, &match_res
);
5159 completion_list_add_name (completion_tracker
&tracker
,
5160 language symbol_language
,
5161 const char *symname
,
5162 const lookup_name_info
&lookup_name
,
5163 const char *text
, const char *word
)
5165 completion_match_result
&match_res
5166 = tracker
.reset_completion_match_result ();
5168 /* Clip symbols that cannot match. */
5169 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5172 /* Refresh SYMNAME from the match string. It's potentially
5173 different depending on language. (E.g., on Ada, the match may be
5174 the encoded symbol name wrapped in "<>"). */
5175 symname
= match_res
.match
.match ();
5176 gdb_assert (symname
!= NULL
);
5178 /* We have a match for a completion, so add SYMNAME to the current list
5179 of matches. Note that the name is moved to freshly malloc'd space. */
5182 gdb::unique_xmalloc_ptr
<char> completion
5183 = make_completion_match_str (symname
, text
, word
);
5185 /* Here we pass the match-for-lcd object to add_completion. Some
5186 languages match the user text against substrings of symbol
5187 names in some cases. E.g., in C++, "b push_ba" completes to
5188 "std::vector::push_back", "std::string::push_back", etc., and
5189 in this case we want the completion lowest common denominator
5190 to be "push_back" instead of "std::". */
5191 tracker
.add_completion (std::move (completion
),
5192 &match_res
.match_for_lcd
, text
, word
);
5196 /* completion_list_add_name wrapper for struct symbol. */
5199 completion_list_add_symbol (completion_tracker
&tracker
,
5201 const lookup_name_info
&lookup_name
,
5202 const char *text
, const char *word
)
5204 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5205 sym
->natural_name (),
5206 lookup_name
, text
, word
);
5209 /* completion_list_add_name wrapper for struct minimal_symbol. */
5212 completion_list_add_msymbol (completion_tracker
&tracker
,
5213 minimal_symbol
*sym
,
5214 const lookup_name_info
&lookup_name
,
5215 const char *text
, const char *word
)
5217 completion_list_add_name (tracker
, MSYMBOL_LANGUAGE (sym
),
5218 sym
->natural_name (),
5219 lookup_name
, text
, word
);
5223 /* ObjC: In case we are completing on a selector, look as the msymbol
5224 again and feed all the selectors into the mill. */
5227 completion_list_objc_symbol (completion_tracker
&tracker
,
5228 struct minimal_symbol
*msymbol
,
5229 const lookup_name_info
&lookup_name
,
5230 const char *text
, const char *word
)
5232 static char *tmp
= NULL
;
5233 static unsigned int tmplen
= 0;
5235 const char *method
, *category
, *selector
;
5238 method
= msymbol
->natural_name ();
5240 /* Is it a method? */
5241 if ((method
[0] != '-') && (method
[0] != '+'))
5245 /* Complete on shortened method method. */
5246 completion_list_add_name (tracker
, language_objc
,
5251 while ((strlen (method
) + 1) >= tmplen
)
5257 tmp
= (char *) xrealloc (tmp
, tmplen
);
5259 selector
= strchr (method
, ' ');
5260 if (selector
!= NULL
)
5263 category
= strchr (method
, '(');
5265 if ((category
!= NULL
) && (selector
!= NULL
))
5267 memcpy (tmp
, method
, (category
- method
));
5268 tmp
[category
- method
] = ' ';
5269 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5270 completion_list_add_name (tracker
, language_objc
, tmp
,
5271 lookup_name
, text
, word
);
5273 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5274 lookup_name
, text
, word
);
5277 if (selector
!= NULL
)
5279 /* Complete on selector only. */
5280 strcpy (tmp
, selector
);
5281 tmp2
= strchr (tmp
, ']');
5285 completion_list_add_name (tracker
, language_objc
, tmp
,
5286 lookup_name
, text
, word
);
5290 /* Break the non-quoted text based on the characters which are in
5291 symbols. FIXME: This should probably be language-specific. */
5294 language_search_unquoted_string (const char *text
, const char *p
)
5296 for (; p
> text
; --p
)
5298 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5302 if ((current_language
->la_language
== language_objc
))
5304 if (p
[-1] == ':') /* Might be part of a method name. */
5306 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5307 p
-= 2; /* Beginning of a method name. */
5308 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5309 { /* Might be part of a method name. */
5312 /* Seeing a ' ' or a '(' is not conclusive evidence
5313 that we are in the middle of a method name. However,
5314 finding "-[" or "+[" should be pretty un-ambiguous.
5315 Unfortunately we have to find it now to decide. */
5318 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5319 t
[-1] == ' ' || t
[-1] == ':' ||
5320 t
[-1] == '(' || t
[-1] == ')')
5325 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5326 p
= t
- 2; /* Method name detected. */
5327 /* Else we leave with p unchanged. */
5337 completion_list_add_fields (completion_tracker
&tracker
,
5339 const lookup_name_info
&lookup_name
,
5340 const char *text
, const char *word
)
5342 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5344 struct type
*t
= SYMBOL_TYPE (sym
);
5345 enum type_code c
= TYPE_CODE (t
);
5348 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5349 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5350 if (TYPE_FIELD_NAME (t
, j
))
5351 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5352 TYPE_FIELD_NAME (t
, j
),
5353 lookup_name
, text
, word
);
5360 symbol_is_function_or_method (symbol
*sym
)
5362 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5364 case TYPE_CODE_FUNC
:
5365 case TYPE_CODE_METHOD
:
5375 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5377 switch (MSYMBOL_TYPE (msymbol
))
5380 case mst_text_gnu_ifunc
:
5381 case mst_solib_trampoline
:
5391 bound_minimal_symbol
5392 find_gnu_ifunc (const symbol
*sym
)
5394 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5397 lookup_name_info
lookup_name (sym
->search_name (),
5398 symbol_name_match_type::SEARCH_NAME
);
5399 struct objfile
*objfile
= symbol_objfile (sym
);
5401 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5402 minimal_symbol
*ifunc
= NULL
;
5404 iterate_over_minimal_symbols (objfile
, lookup_name
,
5405 [&] (minimal_symbol
*minsym
)
5407 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5408 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5410 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5411 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5413 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
5415 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5417 current_top_target ());
5419 if (msym_addr
== address
)
5429 return {ifunc
, objfile
};
5433 /* Add matching symbols from SYMTAB to the current completion list. */
5436 add_symtab_completions (struct compunit_symtab
*cust
,
5437 completion_tracker
&tracker
,
5438 complete_symbol_mode mode
,
5439 const lookup_name_info
&lookup_name
,
5440 const char *text
, const char *word
,
5441 enum type_code code
)
5444 const struct block
*b
;
5445 struct block_iterator iter
;
5451 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5454 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5455 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5457 if (completion_skip_symbol (mode
, sym
))
5460 if (code
== TYPE_CODE_UNDEF
5461 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5462 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5463 completion_list_add_symbol (tracker
, sym
,
5471 default_collect_symbol_completion_matches_break_on
5472 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5473 symbol_name_match_type name_match_type
,
5474 const char *text
, const char *word
,
5475 const char *break_on
, enum type_code code
)
5477 /* Problem: All of the symbols have to be copied because readline
5478 frees them. I'm not going to worry about this; hopefully there
5479 won't be that many. */
5482 const struct block
*b
;
5483 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5484 struct block_iterator iter
;
5485 /* The symbol we are completing on. Points in same buffer as text. */
5486 const char *sym_text
;
5488 /* Now look for the symbol we are supposed to complete on. */
5489 if (mode
== complete_symbol_mode::LINESPEC
)
5495 const char *quote_pos
= NULL
;
5497 /* First see if this is a quoted string. */
5499 for (p
= text
; *p
!= '\0'; ++p
)
5501 if (quote_found
!= '\0')
5503 if (*p
== quote_found
)
5504 /* Found close quote. */
5506 else if (*p
== '\\' && p
[1] == quote_found
)
5507 /* A backslash followed by the quote character
5508 doesn't end the string. */
5511 else if (*p
== '\'' || *p
== '"')
5517 if (quote_found
== '\'')
5518 /* A string within single quotes can be a symbol, so complete on it. */
5519 sym_text
= quote_pos
+ 1;
5520 else if (quote_found
== '"')
5521 /* A double-quoted string is never a symbol, nor does it make sense
5522 to complete it any other way. */
5528 /* It is not a quoted string. Break it based on the characters
5529 which are in symbols. */
5532 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5533 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5542 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5544 /* At this point scan through the misc symbol vectors and add each
5545 symbol you find to the list. Eventually we want to ignore
5546 anything that isn't a text symbol (everything else will be
5547 handled by the psymtab code below). */
5549 if (code
== TYPE_CODE_UNDEF
)
5551 for (objfile
*objfile
: current_program_space
->objfiles ())
5553 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5557 if (completion_skip_symbol (mode
, msymbol
))
5560 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5563 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5569 /* Add completions for all currently loaded symbol tables. */
5570 for (objfile
*objfile
: current_program_space
->objfiles ())
5572 for (compunit_symtab
*cust
: objfile
->compunits ())
5573 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5574 sym_text
, word
, code
);
5577 /* Look through the partial symtabs for all symbols which begin by
5578 matching SYM_TEXT. Expand all CUs that you find to the list. */
5579 expand_symtabs_matching (NULL
,
5582 [&] (compunit_symtab
*symtab
) /* expansion notify */
5584 add_symtab_completions (symtab
,
5585 tracker
, mode
, lookup_name
,
5586 sym_text
, word
, code
);
5590 /* Search upwards from currently selected frame (so that we can
5591 complete on local vars). Also catch fields of types defined in
5592 this places which match our text string. Only complete on types
5593 visible from current context. */
5595 b
= get_selected_block (0);
5596 surrounding_static_block
= block_static_block (b
);
5597 surrounding_global_block
= block_global_block (b
);
5598 if (surrounding_static_block
!= NULL
)
5599 while (b
!= surrounding_static_block
)
5603 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5605 if (code
== TYPE_CODE_UNDEF
)
5607 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5609 completion_list_add_fields (tracker
, sym
, lookup_name
,
5612 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5613 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5614 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5618 /* Stop when we encounter an enclosing function. Do not stop for
5619 non-inlined functions - the locals of the enclosing function
5620 are in scope for a nested function. */
5621 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5623 b
= BLOCK_SUPERBLOCK (b
);
5626 /* Add fields from the file's types; symbols will be added below. */
5628 if (code
== TYPE_CODE_UNDEF
)
5630 if (surrounding_static_block
!= NULL
)
5631 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5632 completion_list_add_fields (tracker
, sym
, lookup_name
,
5635 if (surrounding_global_block
!= NULL
)
5636 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5637 completion_list_add_fields (tracker
, sym
, lookup_name
,
5641 /* Skip macros if we are completing a struct tag -- arguable but
5642 usually what is expected. */
5643 if (current_language
->la_macro_expansion
== macro_expansion_c
5644 && code
== TYPE_CODE_UNDEF
)
5646 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5648 /* This adds a macro's name to the current completion list. */
5649 auto add_macro_name
= [&] (const char *macro_name
,
5650 const macro_definition
*,
5651 macro_source_file
*,
5654 completion_list_add_name (tracker
, language_c
, macro_name
,
5655 lookup_name
, sym_text
, word
);
5658 /* Add any macros visible in the default scope. Note that this
5659 may yield the occasional wrong result, because an expression
5660 might be evaluated in a scope other than the default. For
5661 example, if the user types "break file:line if <TAB>", the
5662 resulting expression will be evaluated at "file:line" -- but
5663 at there does not seem to be a way to detect this at
5665 scope
= default_macro_scope ();
5667 macro_for_each_in_scope (scope
->file
, scope
->line
,
5670 /* User-defined macros are always visible. */
5671 macro_for_each (macro_user_macros
, add_macro_name
);
5676 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5677 complete_symbol_mode mode
,
5678 symbol_name_match_type name_match_type
,
5679 const char *text
, const char *word
,
5680 enum type_code code
)
5682 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5688 /* Collect all symbols (regardless of class) which begin by matching
5692 collect_symbol_completion_matches (completion_tracker
&tracker
,
5693 complete_symbol_mode mode
,
5694 symbol_name_match_type name_match_type
,
5695 const char *text
, const char *word
)
5697 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5703 /* Like collect_symbol_completion_matches, but only collect
5704 STRUCT_DOMAIN symbols whose type code is CODE. */
5707 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5708 const char *text
, const char *word
,
5709 enum type_code code
)
5711 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5712 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5714 gdb_assert (code
== TYPE_CODE_UNION
5715 || code
== TYPE_CODE_STRUCT
5716 || code
== TYPE_CODE_ENUM
);
5717 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5722 /* Like collect_symbol_completion_matches, but collects a list of
5723 symbols defined in all source files named SRCFILE. */
5726 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5727 complete_symbol_mode mode
,
5728 symbol_name_match_type name_match_type
,
5729 const char *text
, const char *word
,
5730 const char *srcfile
)
5732 /* The symbol we are completing on. Points in same buffer as text. */
5733 const char *sym_text
;
5735 /* Now look for the symbol we are supposed to complete on.
5736 FIXME: This should be language-specific. */
5737 if (mode
== complete_symbol_mode::LINESPEC
)
5743 const char *quote_pos
= NULL
;
5745 /* First see if this is a quoted string. */
5747 for (p
= text
; *p
!= '\0'; ++p
)
5749 if (quote_found
!= '\0')
5751 if (*p
== quote_found
)
5752 /* Found close quote. */
5754 else if (*p
== '\\' && p
[1] == quote_found
)
5755 /* A backslash followed by the quote character
5756 doesn't end the string. */
5759 else if (*p
== '\'' || *p
== '"')
5765 if (quote_found
== '\'')
5766 /* A string within single quotes can be a symbol, so complete on it. */
5767 sym_text
= quote_pos
+ 1;
5768 else if (quote_found
== '"')
5769 /* A double-quoted string is never a symbol, nor does it make sense
5770 to complete it any other way. */
5776 /* Not a quoted string. */
5777 sym_text
= language_search_unquoted_string (text
, p
);
5781 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5783 /* Go through symtabs for SRCFILE and check the externs and statics
5784 for symbols which match. */
5785 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5787 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5788 tracker
, mode
, lookup_name
,
5789 sym_text
, word
, TYPE_CODE_UNDEF
);
5794 /* A helper function for make_source_files_completion_list. It adds
5795 another file name to a list of possible completions, growing the
5796 list as necessary. */
5799 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5800 completion_list
*list
)
5802 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5806 not_interesting_fname (const char *fname
)
5808 static const char *illegal_aliens
[] = {
5809 "_globals_", /* inserted by coff_symtab_read */
5814 for (i
= 0; illegal_aliens
[i
]; i
++)
5816 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5822 /* An object of this type is passed as the user_data argument to
5823 map_partial_symbol_filenames. */
5824 struct add_partial_filename_data
5826 struct filename_seen_cache
*filename_seen_cache
;
5830 completion_list
*list
;
5833 /* A callback for map_partial_symbol_filenames. */
5836 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5839 struct add_partial_filename_data
*data
5840 = (struct add_partial_filename_data
*) user_data
;
5842 if (not_interesting_fname (filename
))
5844 if (!data
->filename_seen_cache
->seen (filename
)
5845 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5847 /* This file matches for a completion; add it to the
5848 current list of matches. */
5849 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5853 const char *base_name
= lbasename (filename
);
5855 if (base_name
!= filename
5856 && !data
->filename_seen_cache
->seen (base_name
)
5857 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5858 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5862 /* Return a list of all source files whose names begin with matching
5863 TEXT. The file names are looked up in the symbol tables of this
5867 make_source_files_completion_list (const char *text
, const char *word
)
5869 size_t text_len
= strlen (text
);
5870 completion_list list
;
5871 const char *base_name
;
5872 struct add_partial_filename_data datum
;
5874 if (!have_full_symbols () && !have_partial_symbols ())
5877 filename_seen_cache filenames_seen
;
5879 for (objfile
*objfile
: current_program_space
->objfiles ())
5881 for (compunit_symtab
*cu
: objfile
->compunits ())
5883 for (symtab
*s
: compunit_filetabs (cu
))
5885 if (not_interesting_fname (s
->filename
))
5887 if (!filenames_seen
.seen (s
->filename
)
5888 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
5890 /* This file matches for a completion; add it to the current
5892 add_filename_to_list (s
->filename
, text
, word
, &list
);
5896 /* NOTE: We allow the user to type a base name when the
5897 debug info records leading directories, but not the other
5898 way around. This is what subroutines of breakpoint
5899 command do when they parse file names. */
5900 base_name
= lbasename (s
->filename
);
5901 if (base_name
!= s
->filename
5902 && !filenames_seen
.seen (base_name
)
5903 && filename_ncmp (base_name
, text
, text_len
) == 0)
5904 add_filename_to_list (base_name
, text
, word
, &list
);
5910 datum
.filename_seen_cache
= &filenames_seen
;
5913 datum
.text_len
= text_len
;
5915 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
5916 0 /*need_fullname*/);
5923 /* Return the "main_info" object for the current program space. If
5924 the object has not yet been created, create it and fill in some
5927 static struct main_info
*
5928 get_main_info (void)
5930 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
5934 /* It may seem strange to store the main name in the progspace
5935 and also in whatever objfile happens to see a main name in
5936 its debug info. The reason for this is mainly historical:
5937 gdb returned "main" as the name even if no function named
5938 "main" was defined the program; and this approach lets us
5939 keep compatibility. */
5940 info
= main_progspace_key
.emplace (current_program_space
);
5947 set_main_name (const char *name
, enum language lang
)
5949 struct main_info
*info
= get_main_info ();
5951 if (info
->name_of_main
!= NULL
)
5953 xfree (info
->name_of_main
);
5954 info
->name_of_main
= NULL
;
5955 info
->language_of_main
= language_unknown
;
5959 info
->name_of_main
= xstrdup (name
);
5960 info
->language_of_main
= lang
;
5964 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
5968 find_main_name (void)
5970 const char *new_main_name
;
5972 /* First check the objfiles to see whether a debuginfo reader has
5973 picked up the appropriate main name. Historically the main name
5974 was found in a more or less random way; this approach instead
5975 relies on the order of objfile creation -- which still isn't
5976 guaranteed to get the correct answer, but is just probably more
5978 for (objfile
*objfile
: current_program_space
->objfiles ())
5980 if (objfile
->per_bfd
->name_of_main
!= NULL
)
5982 set_main_name (objfile
->per_bfd
->name_of_main
,
5983 objfile
->per_bfd
->language_of_main
);
5988 /* Try to see if the main procedure is in Ada. */
5989 /* FIXME: brobecker/2005-03-07: Another way of doing this would
5990 be to add a new method in the language vector, and call this
5991 method for each language until one of them returns a non-empty
5992 name. This would allow us to remove this hard-coded call to
5993 an Ada function. It is not clear that this is a better approach
5994 at this point, because all methods need to be written in a way
5995 such that false positives never be returned. For instance, it is
5996 important that a method does not return a wrong name for the main
5997 procedure if the main procedure is actually written in a different
5998 language. It is easy to guaranty this with Ada, since we use a
5999 special symbol generated only when the main in Ada to find the name
6000 of the main procedure. It is difficult however to see how this can
6001 be guarantied for languages such as C, for instance. This suggests
6002 that order of call for these methods becomes important, which means
6003 a more complicated approach. */
6004 new_main_name
= ada_main_name ();
6005 if (new_main_name
!= NULL
)
6007 set_main_name (new_main_name
, language_ada
);
6011 new_main_name
= d_main_name ();
6012 if (new_main_name
!= NULL
)
6014 set_main_name (new_main_name
, language_d
);
6018 new_main_name
= go_main_name ();
6019 if (new_main_name
!= NULL
)
6021 set_main_name (new_main_name
, language_go
);
6025 new_main_name
= pascal_main_name ();
6026 if (new_main_name
!= NULL
)
6028 set_main_name (new_main_name
, language_pascal
);
6032 /* The languages above didn't identify the name of the main procedure.
6033 Fallback to "main". */
6034 set_main_name ("main", language_unknown
);
6042 struct main_info
*info
= get_main_info ();
6044 if (info
->name_of_main
== NULL
)
6047 return info
->name_of_main
;
6050 /* Return the language of the main function. If it is not known,
6051 return language_unknown. */
6054 main_language (void)
6056 struct main_info
*info
= get_main_info ();
6058 if (info
->name_of_main
== NULL
)
6061 return info
->language_of_main
;
6064 /* Handle ``executable_changed'' events for the symtab module. */
6067 symtab_observer_executable_changed (void)
6069 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6070 set_main_name (NULL
, language_unknown
);
6073 /* Return 1 if the supplied producer string matches the ARM RealView
6074 compiler (armcc). */
6077 producer_is_realview (const char *producer
)
6079 static const char *const arm_idents
[] = {
6080 "ARM C Compiler, ADS",
6081 "Thumb C Compiler, ADS",
6082 "ARM C++ Compiler, ADS",
6083 "Thumb C++ Compiler, ADS",
6084 "ARM/Thumb C/C++ Compiler, RVCT",
6085 "ARM C/C++ Compiler, RVCT"
6089 if (producer
== NULL
)
6092 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6093 if (startswith (producer
, arm_idents
[i
]))
6101 /* The next index to hand out in response to a registration request. */
6103 static int next_aclass_value
= LOC_FINAL_VALUE
;
6105 /* The maximum number of "aclass" registrations we support. This is
6106 constant for convenience. */
6107 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6109 /* The objects representing the various "aclass" values. The elements
6110 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6111 elements are those registered at gdb initialization time. */
6113 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6115 /* The globally visible pointer. This is separate from 'symbol_impl'
6116 so that it can be const. */
6118 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6120 /* Make sure we saved enough room in struct symbol. */
6122 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6124 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6125 is the ops vector associated with this index. This returns the new
6126 index, which should be used as the aclass_index field for symbols
6130 register_symbol_computed_impl (enum address_class aclass
,
6131 const struct symbol_computed_ops
*ops
)
6133 int result
= next_aclass_value
++;
6135 gdb_assert (aclass
== LOC_COMPUTED
);
6136 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6137 symbol_impl
[result
].aclass
= aclass
;
6138 symbol_impl
[result
].ops_computed
= ops
;
6140 /* Sanity check OPS. */
6141 gdb_assert (ops
!= NULL
);
6142 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6143 gdb_assert (ops
->describe_location
!= NULL
);
6144 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6145 gdb_assert (ops
->read_variable
!= NULL
);
6150 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6151 OPS is the ops vector associated with this index. This returns the
6152 new index, which should be used as the aclass_index field for symbols
6156 register_symbol_block_impl (enum address_class aclass
,
6157 const struct symbol_block_ops
*ops
)
6159 int result
= next_aclass_value
++;
6161 gdb_assert (aclass
== LOC_BLOCK
);
6162 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6163 symbol_impl
[result
].aclass
= aclass
;
6164 symbol_impl
[result
].ops_block
= ops
;
6166 /* Sanity check OPS. */
6167 gdb_assert (ops
!= NULL
);
6168 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6173 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6174 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6175 this index. This returns the new index, which should be used as
6176 the aclass_index field for symbols of this type. */
6179 register_symbol_register_impl (enum address_class aclass
,
6180 const struct symbol_register_ops
*ops
)
6182 int result
= next_aclass_value
++;
6184 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6185 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6186 symbol_impl
[result
].aclass
= aclass
;
6187 symbol_impl
[result
].ops_register
= ops
;
6192 /* Initialize elements of 'symbol_impl' for the constants in enum
6196 initialize_ordinary_address_classes (void)
6200 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6201 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6206 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6209 initialize_objfile_symbol (struct symbol
*sym
)
6211 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6212 SYMBOL_SECTION (sym
) = -1;
6215 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6219 allocate_symbol (struct objfile
*objfile
)
6221 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6223 initialize_objfile_symbol (result
);
6228 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6231 struct template_symbol
*
6232 allocate_template_symbol (struct objfile
*objfile
)
6234 struct template_symbol
*result
;
6236 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6237 initialize_objfile_symbol (result
);
6245 symbol_objfile (const struct symbol
*symbol
)
6247 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6248 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6254 symbol_arch (const struct symbol
*symbol
)
6256 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6257 return symbol
->owner
.arch
;
6258 return get_objfile_arch (SYMTAB_OBJFILE (symbol
->owner
.symtab
));
6264 symbol_symtab (const struct symbol
*symbol
)
6266 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6267 return symbol
->owner
.symtab
;
6273 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6275 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6276 symbol
->owner
.symtab
= symtab
;
6282 get_symbol_address (const struct symbol
*sym
)
6284 gdb_assert (sym
->maybe_copied
);
6285 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6287 const char *linkage_name
= sym
->linkage_name ();
6289 for (objfile
*objfile
: current_program_space
->objfiles ())
6291 bound_minimal_symbol minsym
6292 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6293 if (minsym
.minsym
!= nullptr)
6294 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6296 return sym
->value
.address
;
6302 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6304 gdb_assert (minsym
->maybe_copied
);
6305 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6307 const char *linkage_name
= minsym
->linkage_name ();
6309 for (objfile
*objfile
: current_program_space
->objfiles ())
6311 if ((objfile
->flags
& OBJF_MAINLINE
) != 0)
6313 bound_minimal_symbol found
6314 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6315 if (found
.minsym
!= nullptr)
6316 return BMSYMBOL_VALUE_ADDRESS (found
);
6319 return (minsym
->value
.address
6320 + ANOFFSET (objf
->section_offsets
, minsym
->section
));
6325 /* Hold the sub-commands of 'info module'. */
6327 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6329 /* Implement the 'info module' command, just displays some help text for
6330 the available sub-commands. */
6333 info_module_command (const char *args
, int from_tty
)
6335 help_list (info_module_cmdlist
, "info module ", class_info
, gdb_stdout
);
6340 std::vector
<module_symbol_search
>
6341 search_module_symbols (const char *module_regexp
, const char *regexp
,
6342 const char *type_regexp
, search_domain kind
)
6344 std::vector
<module_symbol_search
> results
;
6346 /* Search for all modules matching MODULE_REGEXP. */
6347 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6348 spec1
.set_exclude_minsyms (true);
6349 std::vector
<symbol_search
> modules
= spec1
.search ();
6351 /* Now search for all symbols of the required KIND matching the required
6352 regular expressions. We figure out which ones are in which modules
6354 global_symbol_searcher
spec2 (kind
, regexp
);
6355 spec2
.set_symbol_type_regexp (type_regexp
);
6356 spec2
.set_exclude_minsyms (true);
6357 std::vector
<symbol_search
> symbols
= spec2
.search ();
6359 /* Now iterate over all MODULES, checking to see which items from
6360 SYMBOLS are in each module. */
6361 for (const symbol_search
&p
: modules
)
6365 /* This is a module. */
6366 gdb_assert (p
.symbol
!= nullptr);
6368 std::string prefix
= p
.symbol
->print_name ();
6371 for (const symbol_search
&q
: symbols
)
6373 if (q
.symbol
== nullptr)
6376 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6377 prefix
.size ()) != 0)
6380 results
.push_back ({p
, q
});
6387 /* Implement the core of both 'info module functions' and 'info module
6391 info_module_subcommand (bool quiet
, const char *module_regexp
,
6392 const char *regexp
, const char *type_regexp
,
6395 /* Print a header line. Don't build the header line bit by bit as this
6396 prevents internationalisation. */
6399 if (module_regexp
== nullptr)
6401 if (type_regexp
== nullptr)
6403 if (regexp
== nullptr)
6404 printf_filtered ((kind
== VARIABLES_DOMAIN
6405 ? _("All variables in all modules:")
6406 : _("All functions in all modules:")));
6409 ((kind
== VARIABLES_DOMAIN
6410 ? _("All variables matching regular expression"
6411 " \"%s\" in all modules:")
6412 : _("All functions matching regular expression"
6413 " \"%s\" in all modules:")),
6418 if (regexp
== nullptr)
6420 ((kind
== VARIABLES_DOMAIN
6421 ? _("All variables with type matching regular "
6422 "expression \"%s\" in all modules:")
6423 : _("All functions with type matching regular "
6424 "expression \"%s\" in all modules:")),
6428 ((kind
== VARIABLES_DOMAIN
6429 ? _("All variables matching regular expression "
6430 "\"%s\",\n\twith type matching regular "
6431 "expression \"%s\" in all modules:")
6432 : _("All functions matching regular expression "
6433 "\"%s\",\n\twith type matching regular "
6434 "expression \"%s\" in all modules:")),
6435 regexp
, type_regexp
);
6440 if (type_regexp
== nullptr)
6442 if (regexp
== nullptr)
6444 ((kind
== VARIABLES_DOMAIN
6445 ? _("All variables in all modules matching regular "
6446 "expression \"%s\":")
6447 : _("All functions in all modules matching regular "
6448 "expression \"%s\":")),
6452 ((kind
== VARIABLES_DOMAIN
6453 ? _("All variables matching regular expression "
6454 "\"%s\",\n\tin all modules matching regular "
6455 "expression \"%s\":")
6456 : _("All functions matching regular expression "
6457 "\"%s\",\n\tin all modules matching regular "
6458 "expression \"%s\":")),
6459 regexp
, module_regexp
);
6463 if (regexp
== nullptr)
6465 ((kind
== VARIABLES_DOMAIN
6466 ? _("All variables with type matching regular "
6467 "expression \"%s\"\n\tin all modules matching "
6468 "regular expression \"%s\":")
6469 : _("All functions with type matching regular "
6470 "expression \"%s\"\n\tin all modules matching "
6471 "regular expression \"%s\":")),
6472 type_regexp
, module_regexp
);
6475 ((kind
== VARIABLES_DOMAIN
6476 ? _("All variables matching regular expression "
6477 "\"%s\",\n\twith type matching regular expression "
6478 "\"%s\",\n\tin all modules matching regular "
6479 "expression \"%s\":")
6480 : _("All functions matching regular expression "
6481 "\"%s\",\n\twith type matching regular expression "
6482 "\"%s\",\n\tin all modules matching regular "
6483 "expression \"%s\":")),
6484 regexp
, type_regexp
, module_regexp
);
6487 printf_filtered ("\n");
6490 /* Find all symbols of type KIND matching the given regular expressions
6491 along with the symbols for the modules in which those symbols
6493 std::vector
<module_symbol_search
> module_symbols
6494 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6496 std::sort (module_symbols
.begin (), module_symbols
.end (),
6497 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6499 if (a
.first
< b
.first
)
6501 else if (a
.first
== b
.first
)
6502 return a
.second
< b
.second
;
6507 const char *last_filename
= "";
6508 const symbol
*last_module_symbol
= nullptr;
6509 for (const module_symbol_search
&ms
: module_symbols
)
6511 const symbol_search
&p
= ms
.first
;
6512 const symbol_search
&q
= ms
.second
;
6514 gdb_assert (q
.symbol
!= nullptr);
6516 if (last_module_symbol
!= p
.symbol
)
6518 printf_filtered ("\n");
6519 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6520 last_module_symbol
= p
.symbol
;
6524 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6527 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6531 /* Hold the option values for the 'info module .....' sub-commands. */
6533 struct info_modules_var_func_options
6536 char *type_regexp
= nullptr;
6537 char *module_regexp
= nullptr;
6539 ~info_modules_var_func_options ()
6541 xfree (type_regexp
);
6542 xfree (module_regexp
);
6546 /* The options used by 'info module variables' and 'info module functions'
6549 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6550 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6552 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6553 nullptr, /* show_cmd_cb */
6554 nullptr /* set_doc */
6557 gdb::option::string_option_def
<info_modules_var_func_options
> {
6559 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6560 nullptr, /* show_cmd_cb */
6561 nullptr /* set_doc */
6564 gdb::option::string_option_def
<info_modules_var_func_options
> {
6566 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6567 nullptr, /* show_cmd_cb */
6568 nullptr /* set_doc */
6572 /* Return the option group used by the 'info module ...' sub-commands. */
6574 static inline gdb::option::option_def_group
6575 make_info_modules_var_func_options_def_group
6576 (info_modules_var_func_options
*opts
)
6578 return {{info_modules_var_func_options_defs
}, opts
};
6581 /* Implements the 'info module functions' command. */
6584 info_module_functions_command (const char *args
, int from_tty
)
6586 info_modules_var_func_options opts
;
6587 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6588 gdb::option::process_options
6589 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6590 if (args
!= nullptr && *args
== '\0')
6593 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6594 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6597 /* Implements the 'info module variables' command. */
6600 info_module_variables_command (const char *args
, int from_tty
)
6602 info_modules_var_func_options opts
;
6603 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6604 gdb::option::process_options
6605 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6606 if (args
!= nullptr && *args
== '\0')
6609 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6610 opts
.type_regexp
, VARIABLES_DOMAIN
);
6613 /* Command completer for 'info module ...' sub-commands. */
6616 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6617 completion_tracker
&tracker
,
6619 const char * /* word */)
6622 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6623 if (gdb::option::complete_options
6624 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6627 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6628 symbol_completer (ignore
, tracker
, text
, word
);
6634 _initialize_symtab (void)
6636 cmd_list_element
*c
;
6638 initialize_ordinary_address_classes ();
6640 c
= add_info ("variables", info_variables_command
,
6641 info_print_args_help (_("\
6642 All global and static variable names or those matching REGEXPs.\n\
6643 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6644 Prints the global and static variables.\n"),
6645 _("global and static variables"),
6647 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6650 c
= add_com ("whereis", class_info
, info_variables_command
,
6651 info_print_args_help (_("\
6652 All global and static variable names, or those matching REGEXPs.\n\
6653 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6654 Prints the global and static variables.\n"),
6655 _("global and static variables"),
6657 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6660 c
= add_info ("functions", info_functions_command
,
6661 info_print_args_help (_("\
6662 All function names or those matching REGEXPs.\n\
6663 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6664 Prints the functions.\n"),
6667 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6669 c
= add_info ("types", info_types_command
, _("\
6670 All type names, or those matching REGEXP.\n\
6671 Usage: info types [-q] [REGEXP]\n\
6672 Print information about all types matching REGEXP, or all types if no\n\
6673 REGEXP is given. The optional flag -q disables printing of headers."));
6674 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6676 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6678 static std::string info_sources_help
6679 = gdb::option::build_help (_("\
6680 All source files in the program or those matching REGEXP.\n\
6681 Usage: info sources [OPTION]... [REGEXP]\n\
6682 By default, REGEXP is used to match anywhere in the filename.\n\
6688 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6689 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6691 c
= add_info ("modules", info_modules_command
,
6692 _("All module names, or those matching REGEXP."));
6693 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6695 add_prefix_cmd ("module", class_info
, info_module_command
, _("\
6696 Print information about modules."),
6697 &info_module_cmdlist
, "info module ",
6700 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6701 Display functions arranged by modules.\n\
6702 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6703 Print a summary of all functions within each Fortran module, grouped by\n\
6704 module and file. For each function the line on which the function is\n\
6705 defined is given along with the type signature and name of the function.\n\
6707 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6708 listed. If MODREGEXP is provided then only functions in modules matching\n\
6709 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6710 type signature matches TYPEREGEXP are listed.\n\
6712 The -q flag suppresses printing some header information."),
6713 &info_module_cmdlist
);
6714 set_cmd_completer_handle_brkchars
6715 (c
, info_module_var_func_command_completer
);
6717 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6718 Display variables arranged by modules.\n\
6719 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6720 Print a summary of all variables within each Fortran module, grouped by\n\
6721 module and file. For each variable the line on which the variable is\n\
6722 defined is given along with the type and name of the variable.\n\
6724 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6725 listed. If MODREGEXP is provided then only variables in modules matching\n\
6726 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6727 type matches TYPEREGEXP are listed.\n\
6729 The -q flag suppresses printing some header information."),
6730 &info_module_cmdlist
);
6731 set_cmd_completer_handle_brkchars
6732 (c
, info_module_var_func_command_completer
);
6734 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6735 _("Set a breakpoint for all functions matching REGEXP."));
6737 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6738 multiple_symbols_modes
, &multiple_symbols_mode
,
6740 Set how the debugger handles ambiguities in expressions."), _("\
6741 Show how the debugger handles ambiguities in expressions."), _("\
6742 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6743 NULL
, NULL
, &setlist
, &showlist
);
6745 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6746 &basenames_may_differ
, _("\
6747 Set whether a source file may have multiple base names."), _("\
6748 Show whether a source file may have multiple base names."), _("\
6749 (A \"base name\" is the name of a file with the directory part removed.\n\
6750 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6751 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6752 before comparing them. Canonicalization is an expensive operation,\n\
6753 but it allows the same file be known by more than one base name.\n\
6754 If not set (the default), all source files are assumed to have just\n\
6755 one base name, and gdb will do file name comparisons more efficiently."),
6757 &setlist
, &showlist
);
6759 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6760 _("Set debugging of symbol table creation."),
6761 _("Show debugging of symbol table creation."), _("\
6762 When enabled (non-zero), debugging messages are printed when building\n\
6763 symbol tables. A value of 1 (one) normally provides enough information.\n\
6764 A value greater than 1 provides more verbose information."),
6767 &setdebuglist
, &showdebuglist
);
6769 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6771 Set debugging of symbol lookup."), _("\
6772 Show debugging of symbol lookup."), _("\
6773 When enabled (non-zero), symbol lookups are logged."),
6775 &setdebuglist
, &showdebuglist
);
6777 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6778 &new_symbol_cache_size
,
6779 _("Set the size of the symbol cache."),
6780 _("Show the size of the symbol cache."), _("\
6781 The size of the symbol cache.\n\
6782 If zero then the symbol cache is disabled."),
6783 set_symbol_cache_size_handler
, NULL
,
6784 &maintenance_set_cmdlist
,
6785 &maintenance_show_cmdlist
);
6787 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6788 _("Dump the symbol cache for each program space."),
6789 &maintenanceprintlist
);
6791 add_cmd ("symbol-cache-statistics", class_maintenance
,
6792 maintenance_print_symbol_cache_statistics
,
6793 _("Print symbol cache statistics for each program space."),
6794 &maintenanceprintlist
);
6796 add_cmd ("flush-symbol-cache", class_maintenance
,
6797 maintenance_flush_symbol_cache
,
6798 _("Flush the symbol cache for each program space."),
6801 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6802 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6803 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);