1 /* List lines of source files for GDB, the GNU debugger.
2 Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "arch-utils.h"
22 #include "expression.h"
29 #include "gdb_assert.h"
31 #include <sys/types.h>
32 #include "gdb_string.h"
36 #include "gdb_regex.h"
42 #include "filenames.h" /* for DOSish file names */
43 #include "completer.h"
45 #include "readline/readline.h"
50 #define OPEN_MODE (O_RDONLY | O_BINARY)
51 #define FDOPEN_MODE FOPEN_RB
53 /* Prototypes for exported functions. */
55 void _initialize_source (void);
57 /* Prototypes for local functions. */
59 static int get_filename_and_charpos (struct symtab
*, char **);
61 static void reverse_search_command (char *, int);
63 static void forward_search_command (char *, int);
65 static void line_info (char *, int);
67 static void source_info (char *, int);
69 /* Path of directories to search for source files.
70 Same format as the PATH environment variable's value. */
74 /* Support for source path substitution commands. */
76 struct substitute_path_rule
80 struct substitute_path_rule
*next
;
83 static struct substitute_path_rule
*substitute_path_rules
= NULL
;
85 /* Symtab of default file for listing lines of. */
87 static struct symtab
*current_source_symtab
;
89 /* Default next line to list. */
91 static int current_source_line
;
93 static struct program_space
*current_source_pspace
;
95 /* Default number of lines to print with commands like "list".
96 This is based on guessing how many long (i.e. more than chars_per_line
97 characters) lines there will be. To be completely correct, "list"
98 and friends should be rewritten to count characters and see where
99 things are wrapping, but that would be a fair amount of work. */
101 int lines_to_list
= 10;
103 show_lines_to_list (struct ui_file
*file
, int from_tty
,
104 struct cmd_list_element
*c
, const char *value
)
106 fprintf_filtered (file
,
107 _("Number of source lines gdb "
108 "will list by default is %s.\n"),
112 /* Line number of last line printed. Default for various commands.
113 current_source_line is usually, but not always, the same as this. */
115 static int last_line_listed
;
117 /* First line number listed by last listing command. */
119 static int first_line_listed
;
121 /* Saves the name of the last source file visited and a possible error code.
122 Used to prevent repeating annoying "No such file or directories" msgs. */
124 static struct symtab
*last_source_visited
= NULL
;
125 static int last_source_error
= 0;
127 /* Return the first line listed by print_source_lines.
128 Used by command interpreters to request listing from
132 get_first_line_listed (void)
134 return first_line_listed
;
137 /* Return the default number of lines to print with commands like the
138 cli "list". The caller of print_source_lines must use this to
139 calculate the end line and use it in the call to print_source_lines
140 as it does not automatically use this value. */
143 get_lines_to_list (void)
145 return lines_to_list
;
148 /* Return the current source file for listing and next line to list.
149 NOTE: The returned sal pc and end fields are not valid. */
151 struct symtab_and_line
152 get_current_source_symtab_and_line (void)
154 struct symtab_and_line cursal
= { 0 };
156 cursal
.pspace
= current_source_pspace
;
157 cursal
.symtab
= current_source_symtab
;
158 cursal
.line
= current_source_line
;
165 /* If the current source file for listing is not set, try and get a default.
166 Usually called before get_current_source_symtab_and_line() is called.
167 It may err out if a default cannot be determined.
168 We must be cautious about where it is called, as it can recurse as the
169 process of determining a new default may call the caller!
170 Use get_current_source_symtab_and_line only to get whatever
171 we have without erroring out or trying to get a default. */
174 set_default_source_symtab_and_line (void)
176 if (!have_full_symbols () && !have_partial_symbols ())
177 error (_("No symbol table is loaded. Use the \"file\" command."));
179 /* Pull in a current source symtab if necessary. */
180 if (current_source_symtab
== 0)
181 select_source_symtab (0);
184 /* Return the current default file for listing and next line to list
185 (the returned sal pc and end fields are not valid.)
186 and set the current default to whatever is in SAL.
187 NOTE: The returned sal pc and end fields are not valid. */
189 struct symtab_and_line
190 set_current_source_symtab_and_line (const struct symtab_and_line
*sal
)
192 struct symtab_and_line cursal
= { 0 };
194 cursal
.pspace
= current_source_pspace
;
195 cursal
.symtab
= current_source_symtab
;
196 cursal
.line
= current_source_line
;
200 current_source_pspace
= sal
->pspace
;
201 current_source_symtab
= sal
->symtab
;
202 current_source_line
= sal
->line
;
207 /* Reset any information stored about a default file and line to print. */
210 clear_current_source_symtab_and_line (void)
212 current_source_symtab
= 0;
213 current_source_line
= 0;
216 /* Set the source file default for the "list" command to be S.
218 If S is NULL, and we don't have a default, find one. This
219 should only be called when the user actually tries to use the
220 default, since we produce an error if we can't find a reasonable
221 default. Also, since this can cause symbols to be read, doing it
222 before we need to would make things slower than necessary. */
225 select_source_symtab (struct symtab
*s
)
227 struct symtabs_and_lines sals
;
228 struct symtab_and_line sal
;
233 current_source_symtab
= s
;
234 current_source_line
= 1;
235 current_source_pspace
= SYMTAB_PSPACE (s
);
239 if (current_source_symtab
)
242 /* Make the default place to list be the function `main'
244 if (lookup_symbol (main_name (), 0, VAR_DOMAIN
, 0))
246 sals
= decode_line_spec (main_name (), DECODE_LINE_FUNFIRSTLINE
);
249 current_source_pspace
= sal
.pspace
;
250 current_source_symtab
= sal
.symtab
;
251 current_source_line
= max (sal
.line
- (lines_to_list
- 1), 1);
252 if (current_source_symtab
)
256 /* Alright; find the last file in the symtab list (ignoring .h's
257 and namespace symtabs). */
259 current_source_line
= 1;
263 for (s
= ofp
->symtabs
; s
; s
= s
->next
)
265 const char *name
= s
->filename
;
266 int len
= strlen (name
);
268 if (!(len
> 2 && (strcmp (&name
[len
- 2], ".h") == 0
269 || strcmp (name
, "<<C++-namespaces>>") == 0)))
271 current_source_pspace
= current_program_space
;
272 current_source_symtab
= s
;
277 if (current_source_symtab
)
283 s
= ofp
->sf
->qf
->find_last_source_symtab (ofp
);
285 current_source_symtab
= s
;
287 if (current_source_symtab
)
290 error (_("Can't find a default source file"));
293 /* Handler for "set directories path-list" command.
294 "set dir mumble" doesn't prepend paths, it resets the entire
295 path list. The theory is that set(show(dir)) should be a no-op. */
298 set_directories_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
300 /* This is the value that was set.
301 It needs to be processed to maintain $cdir:$cwd and remove dups. */
302 char *set_path
= source_path
;
304 /* We preserve the invariant that $cdir:$cwd begins life at the end of
305 the list by calling init_source_path. If they appear earlier in
306 SET_PATH then mod_path will move them appropriately.
307 mod_path will also remove duplicates. */
309 if (*set_path
!= '\0')
310 mod_path (set_path
, &source_path
);
315 /* Print the list of source directories.
316 This is used by the "ld" command, so it has the signature of a command
320 show_directories_1 (char *ignore
, int from_tty
)
322 puts_filtered ("Source directories searched: ");
323 puts_filtered (source_path
);
324 puts_filtered ("\n");
327 /* Handler for "show directories" command. */
330 show_directories_command (struct ui_file
*file
, int from_tty
,
331 struct cmd_list_element
*c
, const char *value
)
333 show_directories_1 (NULL
, from_tty
);
336 /* Forget line positions and file names for the symtabs in a
337 particular objfile. */
340 forget_cached_source_info_for_objfile (struct objfile
*objfile
)
344 ALL_OBJFILE_SYMTABS (objfile
, s
)
346 if (s
->line_charpos
!= NULL
)
348 xfree (s
->line_charpos
);
349 s
->line_charpos
= NULL
;
351 if (s
->fullname
!= NULL
)
359 objfile
->sf
->qf
->forget_cached_source_info (objfile
);
362 /* Forget what we learned about line positions in source files, and
363 which directories contain them; must check again now since files
364 may be found in a different directory now. */
367 forget_cached_source_info (void)
369 struct program_space
*pspace
;
370 struct objfile
*objfile
;
373 ALL_PSPACE_OBJFILES (pspace
, objfile
)
375 forget_cached_source_info_for_objfile (objfile
);
378 last_source_visited
= NULL
;
382 init_source_path (void)
386 sprintf (buf
, "$cdir%c$cwd", DIRNAME_SEPARATOR
);
387 source_path
= xstrdup (buf
);
388 forget_cached_source_info ();
391 /* Add zero or more directories to the front of the source path. */
394 directory_command (char *dirname
, int from_tty
)
397 /* FIXME, this goes to "delete dir"... */
400 if (!from_tty
|| query (_("Reinitialize source path to empty? ")))
408 mod_path (dirname
, &source_path
);
409 forget_cached_source_info ();
412 show_directories_1 ((char *) 0, from_tty
);
415 /* Add a path given with the -d command line switch.
416 This will not be quoted so we must not treat spaces as separators. */
419 directory_switch (char *dirname
, int from_tty
)
421 add_path (dirname
, &source_path
, 0);
424 /* Add zero or more directories to the front of an arbitrary path. */
427 mod_path (char *dirname
, char **which_path
)
429 add_path (dirname
, which_path
, 1);
432 /* Workhorse of mod_path. Takes an extra argument to determine
433 if dirname should be parsed for separators that indicate multiple
434 directories. This allows for interfaces that pre-parse the dirname
435 and allow specification of traditional separator characters such
439 add_path (char *dirname
, char **which_path
, int parse_separators
)
441 char *old
= *which_path
;
443 VEC (char_ptr
) *dir_vec
= NULL
;
444 struct cleanup
*back_to
;
451 if (parse_separators
)
453 char **argv
, **argvp
;
455 /* This will properly parse the space and tab separators
456 and any quotes that may exist. */
457 argv
= gdb_buildargv (dirname
);
459 for (argvp
= argv
; *argvp
; argvp
++)
460 dirnames_to_char_ptr_vec_append (&dir_vec
, *argvp
);
465 VEC_safe_push (char_ptr
, dir_vec
, xstrdup (dirname
));
466 back_to
= make_cleanup_free_char_ptr_vec (dir_vec
);
468 for (ix
= 0; VEC_iterate (char_ptr
, dir_vec
, ix
, name
); ++ix
)
473 /* Spaces and tabs will have been removed by buildargv().
474 NAME is the start of the directory.
475 P is the '\0' following the end. */
476 p
= name
+ strlen (name
);
478 while (!(IS_DIR_SEPARATOR (*name
) && p
<= name
+ 1) /* "/" */
479 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
480 /* On MS-DOS and MS-Windows, h:\ is different from h: */
481 && !(p
== name
+ 3 && name
[1] == ':') /* "d:/" */
483 && IS_DIR_SEPARATOR (p
[-1]))
484 /* Sigh. "foo/" => "foo" */
488 while (p
> name
&& p
[-1] == '.')
492 /* "." => getwd (). */
493 name
= current_directory
;
496 else if (p
> name
+ 1 && IS_DIR_SEPARATOR (p
[-2]))
506 /* "...foo/." => "...foo". */
517 name
= tilde_expand (name
);
518 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
519 else if (IS_ABSOLUTE_PATH (name
) && p
== name
+ 2) /* "d:" => "d:." */
520 name
= concat (name
, ".", (char *)NULL
);
522 else if (!IS_ABSOLUTE_PATH (name
) && name
[0] != '$')
523 name
= concat (current_directory
, SLASH_STRING
, name
, (char *)NULL
);
525 name
= savestring (name
, p
- name
);
526 make_cleanup (xfree
, name
);
528 /* Unless it's a variable, check existence. */
531 /* These are warnings, not errors, since we don't want a
532 non-existent directory in a .gdbinit file to stop processing
533 of the .gdbinit file.
535 Whether they get added to the path is more debatable. Current
536 answer is yes, in case the user wants to go make the directory
537 or whatever. If the directory continues to not exist/not be
538 a directory/etc, then having them in the path should be
540 if (stat (name
, &st
) < 0)
542 int save_errno
= errno
;
544 fprintf_unfiltered (gdb_stderr
, "Warning: ");
545 print_sys_errmsg (name
, save_errno
);
547 else if ((st
.st_mode
& S_IFMT
) != S_IFDIR
)
548 warning (_("%s is not a directory."), name
);
553 unsigned int len
= strlen (name
);
557 /* FIXME: we should use realpath() or its work-alike
558 before comparing. Then all the code above which
559 removes excess slashes and dots could simply go away. */
560 if (!filename_cmp (p
, name
))
562 /* Found it in the search path, remove old copy. */
564 p
--; /* Back over leading separator. */
565 if (prefix
> p
- *which_path
)
566 goto skip_dup
; /* Same dir twice in one cmd. */
567 memmove (p
, &p
[len
+ 1], strlen (&p
[len
+ 1]) + 1); /* Copy from next \0 or : */
570 tinybuf
[0] = DIRNAME_SEPARATOR
;
573 /* If we have already tacked on a name(s) in this command,
574 be sure they stay on the front as we tack on some
582 temp
= concat (old
, tinybuf
, name
, (char *)NULL
);
584 *which_path
= concat (temp
, "", &old
[prefix
], (char *) NULL
);
585 prefix
= strlen (temp
);
590 *which_path
= concat (name
, (old
[0] ? tinybuf
: old
),
592 prefix
= strlen (name
);
601 do_cleanups (back_to
);
606 source_info (char *ignore
, int from_tty
)
608 struct symtab
*s
= current_source_symtab
;
612 printf_filtered (_("No current source file.\n"));
615 printf_filtered (_("Current source file is %s\n"), s
->filename
);
617 printf_filtered (_("Compilation directory is %s\n"), s
->dirname
);
619 printf_filtered (_("Located in %s\n"), s
->fullname
);
621 printf_filtered (_("Contains %d line%s.\n"), s
->nlines
,
622 s
->nlines
== 1 ? "" : "s");
624 printf_filtered (_("Source language is %s.\n"), language_str (s
->language
));
625 printf_filtered (_("Compiled with %s debugging format.\n"), s
->debugformat
);
626 printf_filtered (_("%s preprocessor macro info.\n"),
627 s
->macro_table
? "Includes" : "Does not include");
631 /* Return True if the file NAME exists and is a regular file. */
633 is_regular_file (const char *name
)
636 const int status
= stat (name
, &st
);
638 /* Stat should never fail except when the file does not exist.
639 If stat fails, analyze the source of error and return True
640 unless the file does not exist, to avoid returning false results
641 on obscure systems where stat does not work as expected. */
644 return (errno
!= ENOENT
);
646 return S_ISREG (st
.st_mode
);
649 /* Open a file named STRING, searching path PATH (dir names sep by some char)
650 using mode MODE in the calls to open. You cannot use this function to
651 create files (O_CREAT).
653 OPTS specifies the function behaviour in specific cases.
655 If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH.
656 (ie pretend the first element of PATH is "."). This also indicates
657 that a slash in STRING disables searching of the path (this is
658 so that "exec-file ./foo" or "symbol-file ./foo" insures that you
659 get that particular version of foo or an error message).
661 If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be
662 searched in path (we usually want this for source files but not for
665 If FILENAME_OPENED is non-null, set it to a newly allocated string naming
666 the actual file opened (this string will always start with a "/"). We
667 have to take special pains to avoid doubling the "/" between the directory
668 and the file, sigh! Emacs gets confuzzed by this when we print the
671 If a file is found, return the descriptor.
672 Otherwise, return -1, with errno set for the last name we tried to open. */
674 /* >>>> This should only allow files of certain types,
675 >>>> eg executable, non-directory. */
677 openp (const char *path
, int opts
, const char *string
,
678 int mode
, char **filename_opened
)
683 VEC (char_ptr
) *dir_vec
;
684 struct cleanup
*back_to
;
688 /* The open syscall MODE parameter is not specified. */
689 gdb_assert ((mode
& O_CREAT
) == 0);
690 gdb_assert (string
!= NULL
);
692 /* A file with an empty name cannot possibly exist. Report a failure
693 without further checking.
695 This is an optimization which also defends us against buggy
696 implementations of the "stat" function. For instance, we have
697 noticed that a MinGW debugger built on Windows XP 32bits crashes
698 when the debugger is started with an empty argument. */
699 if (string
[0] == '\0')
710 if ((opts
& OPF_TRY_CWD_FIRST
) || IS_ABSOLUTE_PATH (string
))
714 if (is_regular_file (string
))
716 filename
= alloca (strlen (string
) + 1);
717 strcpy (filename
, string
);
718 fd
= open (filename
, mode
);
728 if (!(opts
& OPF_SEARCH_IN_PATH
))
729 for (i
= 0; string
[i
]; i
++)
730 if (IS_DIR_SEPARATOR (string
[i
]))
734 /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */
735 if (HAS_DRIVE_SPEC (string
))
736 string
= STRIP_DRIVE_SPEC (string
);
738 /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */
739 while (IS_DIR_SEPARATOR(string
[0]))
743 while (string
[0] == '.' && IS_DIR_SEPARATOR (string
[1]))
746 alloclen
= strlen (path
) + strlen (string
) + 2;
747 filename
= alloca (alloclen
);
750 dir_vec
= dirnames_to_char_ptr_vec (path
);
751 back_to
= make_cleanup_free_char_ptr_vec (dir_vec
);
753 for (ix
= 0; VEC_iterate (char_ptr
, dir_vec
, ix
, dir
); ++ix
)
755 size_t len
= strlen (dir
);
757 if (strcmp (dir
, "$cwd") == 0)
759 /* Name is $cwd -- insert current directory name instead. */
762 /* First, realloc the filename buffer if too short. */
763 len
= strlen (current_directory
);
764 newlen
= len
+ strlen (string
) + 2;
765 if (newlen
> alloclen
)
768 filename
= alloca (alloclen
);
770 strcpy (filename
, current_directory
);
774 /* Normal file name in path -- just use it. */
775 strcpy (filename
, dir
);
777 /* Don't search $cdir. It's also a magic path like $cwd, but we
778 don't have enough information to expand it. The user *could*
779 have an actual directory named '$cdir' but handling that would
780 be confusing, it would mean different things in different
781 contexts. If the user really has '$cdir' one can use './$cdir'.
782 We can get $cdir when loading scripts. When loading source files
783 $cdir must have already been expanded to the correct value. */
784 if (strcmp (dir
, "$cdir") == 0)
788 /* Remove trailing slashes. */
789 while (len
> 0 && IS_DIR_SEPARATOR (filename
[len
- 1]))
792 strcat (filename
+ len
, SLASH_STRING
);
793 strcat (filename
, string
);
795 if (is_regular_file (filename
))
797 fd
= open (filename
, mode
);
803 do_cleanups (back_to
);
808 /* If a file was opened, canonicalize its filename. Use xfullpath
809 rather than gdb_realpath to avoid resolving the basename part
810 of filenames when the associated file is a symbolic link. This
811 fixes a potential inconsistency between the filenames known to
812 GDB and the filenames it prints in the annotations. */
814 *filename_opened
= NULL
;
815 else if (IS_ABSOLUTE_PATH (filename
))
816 *filename_opened
= xfullpath (filename
);
819 /* Beware the // my son, the Emacs barfs, the botch that catch... */
821 char *f
= concat (current_directory
,
822 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
824 filename
, (char *)NULL
);
826 *filename_opened
= xfullpath (f
);
835 /* This is essentially a convenience, for clients that want the behaviour
836 of openp, using source_path, but that really don't want the file to be
837 opened but want instead just to know what the full pathname is (as
838 qualified against source_path).
840 The current working directory is searched first.
842 If the file was found, this function returns 1, and FULL_PATHNAME is
843 set to the fully-qualified pathname.
845 Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */
847 source_full_path_of (const char *filename
, char **full_pathname
)
851 fd
= openp (source_path
, OPF_TRY_CWD_FIRST
| OPF_SEARCH_IN_PATH
, filename
,
852 O_RDONLY
, full_pathname
);
855 *full_pathname
= NULL
;
863 /* Return non-zero if RULE matches PATH, that is if the rule can be
867 substitute_path_rule_matches (const struct substitute_path_rule
*rule
,
870 const int from_len
= strlen (rule
->from
);
871 const int path_len
= strlen (path
);
874 if (path_len
< from_len
)
877 /* The substitution rules are anchored at the start of the path,
878 so the path should start with rule->from. There is no filename
879 comparison routine, so we need to extract the first FROM_LEN
880 characters from PATH first and use that to do the comparison. */
882 path_start
= alloca (from_len
+ 1);
883 strncpy (path_start
, path
, from_len
);
884 path_start
[from_len
] = '\0';
886 if (FILENAME_CMP (path_start
, rule
->from
) != 0)
889 /* Make sure that the region in the path that matches the substitution
890 rule is immediately followed by a directory separator (or the end of
891 string character). */
893 if (path
[from_len
] != '\0' && !IS_DIR_SEPARATOR (path
[from_len
]))
899 /* Find the substitute-path rule that applies to PATH and return it.
900 Return NULL if no rule applies. */
902 static struct substitute_path_rule
*
903 get_substitute_path_rule (const char *path
)
905 struct substitute_path_rule
*rule
= substitute_path_rules
;
907 while (rule
!= NULL
&& !substitute_path_rule_matches (rule
, path
))
913 /* If the user specified a source path substitution rule that applies
914 to PATH, then apply it and return the new path. This new path must
915 be deallocated afterwards.
917 Return NULL if no substitution rule was specified by the user,
918 or if no rule applied to the given PATH. */
921 rewrite_source_path (const char *path
)
923 const struct substitute_path_rule
*rule
= get_substitute_path_rule (path
);
930 from_len
= strlen (rule
->from
);
932 /* Compute the rewritten path and return it. */
935 (char *) xmalloc (strlen (path
) + 1 + strlen (rule
->to
) - from_len
);
936 strcpy (new_path
, rule
->to
);
937 strcat (new_path
, path
+ from_len
);
943 find_and_open_source (const char *filename
,
947 char *path
= source_path
;
951 /* Quick way out if we already know its full name. */
955 /* The user may have requested that source paths be rewritten
956 according to substitution rules he provided. If a substitution
957 rule applies to this path, then apply it. */
958 char *rewritten_fullname
= rewrite_source_path (*fullname
);
960 if (rewritten_fullname
!= NULL
)
963 *fullname
= rewritten_fullname
;
966 result
= open (*fullname
, OPEN_MODE
);
969 /* Call xfullpath here to be consistent with openp
970 which we use below. */
971 char *lpath
= xfullpath (*fullname
);
978 /* Didn't work -- free old one, try again. */
985 /* If necessary, rewrite the compilation directory name according
986 to the source path substitution rules specified by the user. */
988 char *rewritten_dirname
= rewrite_source_path (dirname
);
990 if (rewritten_dirname
!= NULL
)
992 make_cleanup (xfree
, rewritten_dirname
);
993 dirname
= rewritten_dirname
;
996 /* Replace a path entry of $cdir with the compilation directory
999 /* We cast strstr's result in case an ANSIhole has made it const,
1000 which produces a "required warning" when assigned to a nonconst. */
1001 p
= (char *) strstr (source_path
, "$cdir");
1002 if (p
&& (p
== path
|| p
[-1] == DIRNAME_SEPARATOR
)
1003 && (p
[cdir_len
] == DIRNAME_SEPARATOR
|| p
[cdir_len
] == '\0'))
1008 alloca (strlen (source_path
) + 1 + strlen (dirname
) + 1);
1009 len
= p
- source_path
;
1010 strncpy (path
, source_path
, len
); /* Before $cdir */
1011 strcpy (path
+ len
, dirname
); /* new stuff */
1012 strcat (path
+ len
, source_path
+ len
+ cdir_len
); /* After
1017 if (IS_ABSOLUTE_PATH (filename
))
1019 /* If filename is absolute path, try the source path
1020 substitution on it. */
1021 char *rewritten_filename
= rewrite_source_path (filename
);
1023 if (rewritten_filename
!= NULL
)
1025 make_cleanup (xfree
, rewritten_filename
);
1026 filename
= rewritten_filename
;
1030 result
= openp (path
, OPF_SEARCH_IN_PATH
, filename
, OPEN_MODE
, fullname
);
1033 /* Didn't work. Try using just the basename. */
1034 p
= lbasename (filename
);
1036 result
= openp (path
, OPF_SEARCH_IN_PATH
, p
, OPEN_MODE
, fullname
);
1042 /* Open a source file given a symtab S. Returns a file descriptor or
1043 negative number for error.
1045 This function is a convience function to find_and_open_source. */
1048 open_source_file (struct symtab
*s
)
1053 return find_and_open_source (s
->filename
, s
->dirname
, &s
->fullname
);
1056 /* Finds the fullname that a symtab represents.
1058 If this functions finds the fullname, it will save it in s->fullname
1059 and it will also return the value.
1061 If this function fails to find the file that this symtab represents,
1062 NULL will be returned and s->fullname will be set to NULL. */
1065 symtab_to_fullname (struct symtab
*s
)
1072 /* Use cached copy if we have it.
1073 We rely on forget_cached_source_info being called appropriately
1074 to handle cases like the file being moved. */
1078 r
= find_and_open_source (s
->filename
, s
->dirname
, &s
->fullname
);
1089 /* Create and initialize the table S->line_charpos that records
1090 the positions of the lines in the source file, which is assumed
1091 to be open on descriptor DESC.
1092 All set S->nlines to the number of such lines. */
1095 find_source_lines (struct symtab
*s
, int desc
)
1098 char *data
, *p
, *end
;
1100 int lines_allocated
= 1000;
1106 line_charpos
= (int *) xmalloc (lines_allocated
* sizeof (int));
1107 if (fstat (desc
, &st
) < 0)
1108 perror_with_name (s
->filename
);
1110 if (s
->objfile
&& s
->objfile
->obfd
)
1111 mtime
= s
->objfile
->mtime
;
1113 mtime
= exec_bfd_mtime
;
1115 if (mtime
&& mtime
< st
.st_mtime
)
1116 warning (_("Source file is more recent than executable."));
1119 struct cleanup
*old_cleanups
;
1121 /* st_size might be a large type, but we only support source files whose
1122 size fits in an int. */
1123 size
= (int) st
.st_size
;
1125 /* Use malloc, not alloca, because this may be pretty large, and we may
1126 run into various kinds of limits on stack size. */
1127 data
= (char *) xmalloc (size
);
1128 old_cleanups
= make_cleanup (xfree
, data
);
1130 /* Reassign `size' to result of read for systems where \r\n -> \n. */
1131 size
= myread (desc
, data
, size
);
1133 perror_with_name (s
->filename
);
1136 line_charpos
[0] = 0;
1141 /* A newline at the end does not start a new line. */
1144 if (nlines
== lines_allocated
)
1146 lines_allocated
*= 2;
1148 (int *) xrealloc ((char *) line_charpos
,
1149 sizeof (int) * lines_allocated
);
1151 line_charpos
[nlines
++] = p
- data
;
1154 do_cleanups (old_cleanups
);
1159 (int *) xrealloc ((char *) line_charpos
, nlines
* sizeof (int));
1165 /* Get full pathname and line number positions for a symtab.
1166 Return nonzero if line numbers may have changed.
1167 Set *FULLNAME to actual name of the file as found by `openp',
1168 or to 0 if the file is not found. */
1171 get_filename_and_charpos (struct symtab
*s
, char **fullname
)
1173 int desc
, linenums_changed
= 0;
1174 struct cleanup
*cleanups
;
1176 desc
= open_source_file (s
);
1183 cleanups
= make_cleanup_close (desc
);
1185 *fullname
= s
->fullname
;
1186 if (s
->line_charpos
== 0)
1187 linenums_changed
= 1;
1188 if (linenums_changed
)
1189 find_source_lines (s
, desc
);
1190 do_cleanups (cleanups
);
1191 return linenums_changed
;
1194 /* Print text describing the full name of the source file S
1195 and the line number LINE and its corresponding character position.
1196 The text starts with two Ctrl-z so that the Emacs-GDB interface
1199 MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
1201 Return 1 if successful, 0 if could not find the file. */
1204 identify_source_line (struct symtab
*s
, int line
, int mid_statement
,
1207 if (s
->line_charpos
== 0)
1208 get_filename_and_charpos (s
, (char **) NULL
);
1209 if (s
->fullname
== 0)
1211 if (line
> s
->nlines
)
1212 /* Don't index off the end of the line_charpos array. */
1214 annotate_source (s
->fullname
, line
, s
->line_charpos
[line
- 1],
1215 mid_statement
, get_objfile_arch (s
->objfile
), pc
);
1217 current_source_line
= line
;
1218 first_line_listed
= line
;
1219 last_line_listed
= line
;
1220 current_source_symtab
= s
;
1225 /* Print source lines from the file of symtab S,
1226 starting with line number LINE and stopping before line number STOPLINE. */
1228 static void print_source_lines_base (struct symtab
*s
, int line
, int stopline
,
1231 print_source_lines_base (struct symtab
*s
, int line
, int stopline
, int noerror
)
1237 int nlines
= stopline
- line
;
1238 struct cleanup
*cleanup
;
1239 struct ui_out
*uiout
= current_uiout
;
1241 /* Regardless of whether we can open the file, set current_source_symtab. */
1242 current_source_symtab
= s
;
1243 current_source_line
= line
;
1244 first_line_listed
= line
;
1246 /* If printing of source lines is disabled, just print file and line
1248 if (ui_out_test_flags (uiout
, ui_source_list
))
1250 /* Only prints "No such file or directory" once. */
1251 if ((s
!= last_source_visited
) || (!last_source_error
))
1253 last_source_visited
= s
;
1254 desc
= open_source_file (s
);
1258 desc
= last_source_error
;
1264 desc
= last_source_error
;
1269 if (desc
< 0 || noprint
)
1271 last_source_error
= desc
;
1275 char *name
= alloca (strlen (s
->filename
) + 100);
1276 sprintf (name
, "%d\t%s", line
, s
->filename
);
1277 print_sys_errmsg (name
, errno
);
1281 ui_out_field_int (uiout
, "line", line
);
1282 ui_out_text (uiout
, "\tin ");
1283 ui_out_field_string (uiout
, "file", s
->filename
);
1284 ui_out_text (uiout
, "\n");
1290 last_source_error
= 0;
1292 if (s
->line_charpos
== 0)
1293 find_source_lines (s
, desc
);
1295 if (line
< 1 || line
> s
->nlines
)
1298 error (_("Line number %d out of range; %s has %d lines."),
1299 line
, s
->filename
, s
->nlines
);
1302 if (lseek (desc
, s
->line_charpos
[line
- 1], 0) < 0)
1305 perror_with_name (s
->filename
);
1308 stream
= fdopen (desc
, FDOPEN_MODE
);
1310 cleanup
= make_cleanup_fclose (stream
);
1312 while (nlines
-- > 0)
1319 last_line_listed
= current_source_line
;
1320 sprintf (buf
, "%d\t", current_source_line
++);
1321 ui_out_text (uiout
, buf
);
1324 if (c
< 040 && c
!= '\t' && c
!= '\n' && c
!= '\r')
1326 sprintf (buf
, "^%c", c
+ 0100);
1327 ui_out_text (uiout
, buf
);
1330 ui_out_text (uiout
, "^?");
1333 /* Skip a \r character, but only before a \n. */
1334 int c1
= fgetc (stream
);
1337 printf_filtered ("^%c", c
+ 0100);
1339 ungetc (c1
, stream
);
1343 sprintf (buf
, "%c", c
);
1344 ui_out_text (uiout
, buf
);
1347 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1350 do_cleanups (cleanup
);
1353 /* Show source lines from the file of symtab S, starting with line
1354 number LINE and stopping before line number STOPLINE. If this is
1355 not the command line version, then the source is shown in the source
1356 window otherwise it is simply printed. */
1359 print_source_lines (struct symtab
*s
, int line
, int stopline
, int noerror
)
1361 print_source_lines_base (s
, line
, stopline
, noerror
);
1364 /* Print info on range of pc's in a specified line. */
1367 line_info (char *arg
, int from_tty
)
1369 struct symtabs_and_lines sals
;
1370 struct symtab_and_line sal
;
1371 CORE_ADDR start_pc
, end_pc
;
1373 struct cleanup
*cleanups
;
1375 init_sal (&sal
); /* initialize to zeroes */
1379 sal
.symtab
= current_source_symtab
;
1380 sal
.pspace
= current_program_space
;
1381 sal
.line
= last_line_listed
;
1383 sals
.sals
= (struct symtab_and_line
*)
1384 xmalloc (sizeof (struct symtab_and_line
));
1389 sals
= decode_line_spec_1 (arg
, DECODE_LINE_LIST_MODE
);
1394 cleanups
= make_cleanup (xfree
, sals
.sals
);
1396 /* C++ More than one line may have been specified, as when the user
1397 specifies an overloaded function name. Print info on them all. */
1398 for (i
= 0; i
< sals
.nelts
; i
++)
1401 if (sal
.pspace
!= current_program_space
)
1404 if (sal
.symtab
== 0)
1406 struct gdbarch
*gdbarch
= get_current_arch ();
1408 printf_filtered (_("No line number information available"));
1411 /* This is useful for "info line *0x7f34". If we can't tell the
1412 user about a source line, at least let them have the symbolic
1414 printf_filtered (" for address ");
1416 print_address (gdbarch
, sal
.pc
, gdb_stdout
);
1419 printf_filtered (".");
1420 printf_filtered ("\n");
1422 else if (sal
.line
> 0
1423 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
1425 struct gdbarch
*gdbarch
= get_objfile_arch (sal
.symtab
->objfile
);
1427 if (start_pc
== end_pc
)
1429 printf_filtered ("Line %d of \"%s\"",
1430 sal
.line
, sal
.symtab
->filename
);
1432 printf_filtered (" is at address ");
1433 print_address (gdbarch
, start_pc
, gdb_stdout
);
1435 printf_filtered (" but contains no code.\n");
1439 printf_filtered ("Line %d of \"%s\"",
1440 sal
.line
, sal
.symtab
->filename
);
1442 printf_filtered (" starts at address ");
1443 print_address (gdbarch
, start_pc
, gdb_stdout
);
1445 printf_filtered (" and ends at ");
1446 print_address (gdbarch
, end_pc
, gdb_stdout
);
1447 printf_filtered (".\n");
1450 /* x/i should display this line's code. */
1451 set_next_address (gdbarch
, start_pc
);
1453 /* Repeating "info line" should do the following line. */
1454 last_line_listed
= sal
.line
+ 1;
1456 /* If this is the only line, show the source code. If it could
1457 not find the file, don't do anything special. */
1458 if (annotation_level
&& sals
.nelts
== 1)
1459 identify_source_line (sal
.symtab
, sal
.line
, 0, start_pc
);
1462 /* Is there any case in which we get here, and have an address
1463 which the user would want to see? If we have debugging symbols
1464 and no line numbers? */
1465 printf_filtered (_("Line number %d is out of range for \"%s\".\n"),
1466 sal
.line
, sal
.symtab
->filename
);
1468 do_cleanups (cleanups
);
1471 /* Commands to search the source file for a regexp. */
1474 forward_search_command (char *regex
, int from_tty
)
1481 struct cleanup
*cleanups
;
1483 line
= last_line_listed
+ 1;
1485 msg
= (char *) re_comp (regex
);
1487 error (("%s"), msg
);
1489 if (current_source_symtab
== 0)
1490 select_source_symtab (0);
1492 desc
= open_source_file (current_source_symtab
);
1494 perror_with_name (current_source_symtab
->filename
);
1495 cleanups
= make_cleanup_close (desc
);
1497 if (current_source_symtab
->line_charpos
== 0)
1498 find_source_lines (current_source_symtab
, desc
);
1500 if (line
< 1 || line
> current_source_symtab
->nlines
)
1501 error (_("Expression not found"));
1503 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1504 perror_with_name (current_source_symtab
->filename
);
1506 discard_cleanups (cleanups
);
1507 stream
= fdopen (desc
, FDOPEN_MODE
);
1509 cleanups
= make_cleanup_fclose (stream
);
1512 static char *buf
= NULL
;
1514 int cursize
, newsize
;
1517 buf
= xmalloc (cursize
);
1526 if (p
- buf
== cursize
)
1528 newsize
= cursize
+ cursize
/ 2;
1529 buf
= xrealloc (buf
, newsize
);
1534 while (c
!= '\n' && (c
= getc (stream
)) >= 0);
1536 /* Remove the \r, if any, at the end of the line, otherwise
1537 regular expressions that end with $ or \n won't work. */
1538 if (p
- buf
> 1 && p
[-2] == '\r')
1544 /* We now have a source line in buf, null terminate and match. */
1546 if (re_exec (buf
) > 0)
1549 do_cleanups (cleanups
);
1550 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1551 set_internalvar_integer (lookup_internalvar ("_"), line
);
1552 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1558 printf_filtered (_("Expression not found\n"));
1559 do_cleanups (cleanups
);
1563 reverse_search_command (char *regex
, int from_tty
)
1570 struct cleanup
*cleanups
;
1572 line
= last_line_listed
- 1;
1574 msg
= (char *) re_comp (regex
);
1576 error (("%s"), msg
);
1578 if (current_source_symtab
== 0)
1579 select_source_symtab (0);
1581 desc
= open_source_file (current_source_symtab
);
1583 perror_with_name (current_source_symtab
->filename
);
1584 cleanups
= make_cleanup_close (desc
);
1586 if (current_source_symtab
->line_charpos
== 0)
1587 find_source_lines (current_source_symtab
, desc
);
1589 if (line
< 1 || line
> current_source_symtab
->nlines
)
1590 error (_("Expression not found"));
1592 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1593 perror_with_name (current_source_symtab
->filename
);
1595 discard_cleanups (cleanups
);
1596 stream
= fdopen (desc
, FDOPEN_MODE
);
1598 cleanups
= make_cleanup_fclose (stream
);
1601 /* FIXME!!! We walk right off the end of buf if we get a long line!!! */
1602 char buf
[4096]; /* Should be reasonable??? */
1612 while (c
!= '\n' && (c
= getc (stream
)) >= 0);
1614 /* Remove the \r, if any, at the end of the line, otherwise
1615 regular expressions that end with $ or \n won't work. */
1616 if (p
- buf
> 1 && p
[-2] == '\r')
1622 /* We now have a source line in buf; null terminate and match. */
1624 if (re_exec (buf
) > 0)
1627 do_cleanups (cleanups
);
1628 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1629 set_internalvar_integer (lookup_internalvar ("_"), line
);
1630 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1634 if (fseek (stream
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1636 do_cleanups (cleanups
);
1637 perror_with_name (current_source_symtab
->filename
);
1641 printf_filtered (_("Expression not found\n"));
1642 do_cleanups (cleanups
);
1646 /* If the last character of PATH is a directory separator, then strip it. */
1649 strip_trailing_directory_separator (char *path
)
1651 const int last
= strlen (path
) - 1;
1654 return; /* No stripping is needed if PATH is the empty string. */
1656 if (IS_DIR_SEPARATOR (path
[last
]))
1660 /* Return the path substitution rule that matches FROM.
1661 Return NULL if no rule matches. */
1663 static struct substitute_path_rule
*
1664 find_substitute_path_rule (const char *from
)
1666 struct substitute_path_rule
*rule
= substitute_path_rules
;
1668 while (rule
!= NULL
)
1670 if (FILENAME_CMP (rule
->from
, from
) == 0)
1678 /* Add a new substitute-path rule at the end of the current list of rules.
1679 The new rule will replace FROM into TO. */
1682 add_substitute_path_rule (char *from
, char *to
)
1684 struct substitute_path_rule
*rule
;
1685 struct substitute_path_rule
*new_rule
;
1687 new_rule
= xmalloc (sizeof (struct substitute_path_rule
));
1688 new_rule
->from
= xstrdup (from
);
1689 new_rule
->to
= xstrdup (to
);
1690 new_rule
->next
= NULL
;
1692 /* If the list of rules are empty, then insert the new rule
1693 at the head of the list. */
1695 if (substitute_path_rules
== NULL
)
1697 substitute_path_rules
= new_rule
;
1701 /* Otherwise, skip to the last rule in our list and then append
1704 rule
= substitute_path_rules
;
1705 while (rule
->next
!= NULL
)
1708 rule
->next
= new_rule
;
1711 /* Remove the given source path substitution rule from the current list
1712 of rules. The memory allocated for that rule is also deallocated. */
1715 delete_substitute_path_rule (struct substitute_path_rule
*rule
)
1717 if (rule
== substitute_path_rules
)
1718 substitute_path_rules
= rule
->next
;
1721 struct substitute_path_rule
*prev
= substitute_path_rules
;
1723 while (prev
!= NULL
&& prev
->next
!= rule
)
1726 gdb_assert (prev
!= NULL
);
1728 prev
->next
= rule
->next
;
1736 /* Implement the "show substitute-path" command. */
1739 show_substitute_path_command (char *args
, int from_tty
)
1741 struct substitute_path_rule
*rule
= substitute_path_rules
;
1745 argv
= gdb_buildargv (args
);
1746 make_cleanup_freeargv (argv
);
1748 /* We expect zero or one argument. */
1750 if (argv
!= NULL
&& argv
[0] != NULL
&& argv
[1] != NULL
)
1751 error (_("Too many arguments in command"));
1753 if (argv
!= NULL
&& argv
[0] != NULL
)
1756 /* Print the substitution rules. */
1760 (_("Source path substitution rule matching `%s':\n"), from
);
1762 printf_filtered (_("List of all source path substitution rules:\n"));
1764 while (rule
!= NULL
)
1766 if (from
== NULL
|| FILENAME_CMP (rule
->from
, from
) == 0)
1767 printf_filtered (" `%s' -> `%s'.\n", rule
->from
, rule
->to
);
1772 /* Implement the "unset substitute-path" command. */
1775 unset_substitute_path_command (char *args
, int from_tty
)
1777 struct substitute_path_rule
*rule
= substitute_path_rules
;
1778 char **argv
= gdb_buildargv (args
);
1782 /* This function takes either 0 or 1 argument. */
1784 make_cleanup_freeargv (argv
);
1785 if (argv
!= NULL
&& argv
[0] != NULL
&& argv
[1] != NULL
)
1786 error (_("Incorrect usage, too many arguments in command"));
1788 if (argv
!= NULL
&& argv
[0] != NULL
)
1791 /* If the user asked for all the rules to be deleted, ask him
1792 to confirm and give him a chance to abort before the action
1796 && !query (_("Delete all source path substitution rules? ")))
1797 error (_("Canceled"));
1799 /* Delete the rule matching the argument. No argument means that
1800 all rules should be deleted. */
1802 while (rule
!= NULL
)
1804 struct substitute_path_rule
*next
= rule
->next
;
1806 if (from
== NULL
|| FILENAME_CMP (from
, rule
->from
) == 0)
1808 delete_substitute_path_rule (rule
);
1815 /* If the user asked for a specific rule to be deleted but
1816 we could not find it, then report an error. */
1818 if (from
!= NULL
&& !rule_found
)
1819 error (_("No substitution rule defined for `%s'"), from
);
1821 forget_cached_source_info ();
1824 /* Add a new source path substitution rule. */
1827 set_substitute_path_command (char *args
, int from_tty
)
1830 struct substitute_path_rule
*rule
;
1832 argv
= gdb_buildargv (args
);
1833 make_cleanup_freeargv (argv
);
1835 if (argv
== NULL
|| argv
[0] == NULL
|| argv
[1] == NULL
)
1836 error (_("Incorrect usage, too few arguments in command"));
1838 if (argv
[2] != NULL
)
1839 error (_("Incorrect usage, too many arguments in command"));
1841 if (*(argv
[0]) == '\0')
1842 error (_("First argument must be at least one character long"));
1844 /* Strip any trailing directory separator character in either FROM
1845 or TO. The substitution rule already implicitly contains them. */
1846 strip_trailing_directory_separator (argv
[0]);
1847 strip_trailing_directory_separator (argv
[1]);
1849 /* If a rule with the same "from" was previously defined, then
1850 delete it. This new rule replaces it. */
1852 rule
= find_substitute_path_rule (argv
[0]);
1854 delete_substitute_path_rule (rule
);
1856 /* Insert the new substitution rule. */
1858 add_substitute_path_rule (argv
[0], argv
[1]);
1859 forget_cached_source_info ();
1864 _initialize_source (void)
1866 struct cmd_list_element
*c
;
1868 current_source_symtab
= 0;
1869 init_source_path ();
1871 /* The intention is to use POSIX Basic Regular Expressions.
1872 Always use the GNU regex routine for consistency across all hosts.
1873 Our current GNU regex.c does not have all the POSIX features, so this is
1874 just an approximation. */
1875 re_set_syntax (RE_SYNTAX_GREP
);
1877 c
= add_cmd ("directory", class_files
, directory_command
, _("\
1878 Add directory DIR to beginning of search path for source files.\n\
1879 Forget cached info on source file locations and line positions.\n\
1880 DIR can also be $cwd for the current working directory, or $cdir for the\n\
1881 directory in which the source file was compiled into object code.\n\
1882 With no argument, reset the search path to $cdir:$cwd, the default."),
1886 add_com_alias ("use", "directory", class_files
, 0);
1888 set_cmd_completer (c
, filename_completer
);
1890 add_setshow_optional_filename_cmd ("directories",
1894 Set the search path for finding source files."),
1896 Show the search path for finding source files."),
1898 $cwd in the path means the current working directory.\n\
1899 $cdir in the path means the compilation directory of the source file.\n\
1900 GDB ensures the search path always ends with $cdir:$cwd by\n\
1901 appending these directories if necessary.\n\
1902 Setting the value to an empty string sets it to $cdir:$cwd, the default."),
1903 set_directories_command
,
1904 show_directories_command
,
1905 &setlist
, &showlist
);
1909 add_com_alias ("D", "directory", class_files
, 0);
1910 add_cmd ("ld", no_class
, show_directories_1
, _("\
1911 Current search path for finding source files.\n\
1912 $cwd in the path means the current working directory.\n\
1913 $cdir in the path means the compilation directory of the source file."),
1917 add_info ("source", source_info
,
1918 _("Information about the current source file."));
1920 add_info ("line", line_info
, _("\
1921 Core addresses of the code for a source line.\n\
1922 Line can be specified as\n\
1923 LINENUM, to list around that line in current file,\n\
1924 FILE:LINENUM, to list around that line in that file,\n\
1925 FUNCTION, to list around beginning of that function,\n\
1926 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1927 Default is to describe the last source line that was listed.\n\n\
1928 This sets the default address for \"x\" to the line's first instruction\n\
1929 so that \"x/i\" suffices to start examining the machine code.\n\
1930 The address is also stored as the value of \"$_\"."));
1932 add_com ("forward-search", class_files
, forward_search_command
, _("\
1933 Search for regular expression (see regex(3)) from last line listed.\n\
1934 The matching line number is also stored as the value of \"$_\"."));
1935 add_com_alias ("search", "forward-search", class_files
, 0);
1937 add_com ("reverse-search", class_files
, reverse_search_command
, _("\
1938 Search backward for regular expression (see regex(3)) from last line listed.\n\
1939 The matching line number is also stored as the value of \"$_\"."));
1940 add_com_alias ("rev", "reverse-search", class_files
, 1);
1944 add_com_alias ("/", "forward-search", class_files
, 0);
1945 add_com_alias ("?", "reverse-search", class_files
, 0);
1948 add_setshow_integer_cmd ("listsize", class_support
, &lines_to_list
, _("\
1949 Set number of source lines gdb will list by default."), _("\
1950 Show number of source lines gdb will list by default."), NULL
,
1953 &setlist
, &showlist
);
1955 add_cmd ("substitute-path", class_files
, set_substitute_path_command
,
1957 Usage: set substitute-path FROM TO\n\
1958 Add a substitution rule replacing FROM into TO in source file names.\n\
1959 If a substitution rule was previously set for FROM, the old rule\n\
1960 is replaced by the new one."),
1963 add_cmd ("substitute-path", class_files
, unset_substitute_path_command
,
1965 Usage: unset substitute-path [FROM]\n\
1966 Delete the rule for substituting FROM in source file names. If FROM\n\
1967 is not specified, all substituting rules are deleted.\n\
1968 If the debugger cannot find a rule for FROM, it will display a warning."),
1971 add_cmd ("substitute-path", class_files
, show_substitute_path_command
,
1973 Usage: show substitute-path [FROM]\n\
1974 Print the rule for substituting FROM in source file names. If FROM\n\
1975 is not specified, print all substitution rules."),