Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
ecd75fc8 | 2 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
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 | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
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. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
5af949e3 | 20 | #include "arch-utils.h" |
c906108c SS |
21 | #include "symtab.h" |
22 | #include "expression.h" | |
23 | #include "language.h" | |
24 | #include "command.h" | |
c2c6d25f | 25 | #include "source.h" |
c906108c SS |
26 | #include "gdbcmd.h" |
27 | #include "frame.h" | |
28 | #include "value.h" | |
2f61ca93 | 29 | #include "gdb_assert.h" |
614c279d | 30 | #include "filestuff.h" |
c906108c SS |
31 | |
32 | #include <sys/types.h> | |
0e9f083f | 33 | #include <string.h> |
53ce3c39 | 34 | #include <sys/stat.h> |
c906108c | 35 | #include <fcntl.h> |
c906108c | 36 | #include "gdbcore.h" |
88987551 | 37 | #include "gdb_regex.h" |
c906108c SS |
38 | #include "symfile.h" |
39 | #include "objfiles.h" | |
40 | #include "annotate.h" | |
41 | #include "gdbtypes.h" | |
c5f0f3d0 | 42 | #include "linespec.h" |
fe4e3eb8 | 43 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 44 | #include "completer.h" |
8b93c638 | 45 | #include "ui-out.h" |
dbda9972 | 46 | #include "readline/readline.h" |
c906108c | 47 | |
c906108c SS |
48 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
49 | #define FDOPEN_MODE FOPEN_RB | |
50 | ||
c378eb4e | 51 | /* Prototypes for exported functions. */ |
c906108c | 52 | |
a14ed312 | 53 | void _initialize_source (void); |
c906108c | 54 | |
c378eb4e | 55 | /* Prototypes for local functions. */ |
c906108c | 56 | |
a14ed312 | 57 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 58 | |
a14ed312 | 59 | static void reverse_search_command (char *, int); |
c906108c | 60 | |
a14ed312 | 61 | static void forward_search_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void line_info (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void source_info (char *, int); |
c906108c | 66 | |
c906108c SS |
67 | /* Path of directories to search for source files. |
68 | Same format as the PATH environment variable's value. */ | |
69 | ||
70 | char *source_path; | |
71 | ||
2f61ca93 JB |
72 | /* Support for source path substitution commands. */ |
73 | ||
74 | struct substitute_path_rule | |
75 | { | |
76 | char *from; | |
77 | char *to; | |
78 | struct substitute_path_rule *next; | |
79 | }; | |
80 | ||
81 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
82 | ||
c906108c SS |
83 | /* Symtab of default file for listing lines of. */ |
84 | ||
0378c332 | 85 | static struct symtab *current_source_symtab; |
c906108c SS |
86 | |
87 | /* Default next line to list. */ | |
88 | ||
0378c332 | 89 | static int current_source_line; |
c906108c | 90 | |
6c95b8df PA |
91 | static struct program_space *current_source_pspace; |
92 | ||
c906108c SS |
93 | /* Default number of lines to print with commands like "list". |
94 | This is based on guessing how many long (i.e. more than chars_per_line | |
95 | characters) lines there will be. To be completely correct, "list" | |
96 | and friends should be rewritten to count characters and see where | |
97 | things are wrapping, but that would be a fair amount of work. */ | |
98 | ||
99 | int lines_to_list = 10; | |
920d2a44 AC |
100 | static void |
101 | show_lines_to_list (struct ui_file *file, int from_tty, | |
102 | struct cmd_list_element *c, const char *value) | |
103 | { | |
3e43a32a MS |
104 | fprintf_filtered (file, |
105 | _("Number of source lines gdb " | |
106 | "will list by default is %s.\n"), | |
920d2a44 AC |
107 | value); |
108 | } | |
c906108c | 109 | |
1b56eb55 JK |
110 | /* Possible values of 'set filename-display'. */ |
111 | static const char filename_display_basename[] = "basename"; | |
112 | static const char filename_display_relative[] = "relative"; | |
113 | static const char filename_display_absolute[] = "absolute"; | |
114 | ||
115 | static const char *const filename_display_kind_names[] = { | |
116 | filename_display_basename, | |
117 | filename_display_relative, | |
118 | filename_display_absolute, | |
119 | NULL | |
120 | }; | |
121 | ||
122 | static const char *filename_display_string = filename_display_relative; | |
123 | ||
124 | static void | |
125 | show_filename_display_string (struct ui_file *file, int from_tty, | |
126 | struct cmd_list_element *c, const char *value) | |
127 | { | |
128 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
129 | } | |
130 | ||
c906108c SS |
131 | /* Line number of last line printed. Default for various commands. |
132 | current_source_line is usually, but not always, the same as this. */ | |
133 | ||
134 | static int last_line_listed; | |
135 | ||
136 | /* First line number listed by last listing command. */ | |
137 | ||
138 | static int first_line_listed; | |
139 | ||
140 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 141 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
142 | |
143 | static struct symtab *last_source_visited = NULL; | |
144 | static int last_source_error = 0; | |
c906108c | 145 | \f |
0378c332 FN |
146 | /* Return the first line listed by print_source_lines. |
147 | Used by command interpreters to request listing from | |
c378eb4e | 148 | a previous point. */ |
0378c332 FN |
149 | |
150 | int | |
151 | get_first_line_listed (void) | |
152 | { | |
153 | return first_line_listed; | |
154 | } | |
155 | ||
156 | /* Return the default number of lines to print with commands like the | |
157 | cli "list". The caller of print_source_lines must use this to | |
158 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 159 | as it does not automatically use this value. */ |
0378c332 FN |
160 | |
161 | int | |
162 | get_lines_to_list (void) | |
163 | { | |
164 | return lines_to_list; | |
165 | } | |
166 | ||
167 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 168 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
169 | |
170 | struct symtab_and_line | |
171 | get_current_source_symtab_and_line (void) | |
172 | { | |
245c7f48 | 173 | struct symtab_and_line cursal = { 0 }; |
0378c332 | 174 | |
6c95b8df | 175 | cursal.pspace = current_source_pspace; |
0378c332 FN |
176 | cursal.symtab = current_source_symtab; |
177 | cursal.line = current_source_line; | |
53cb0458 FN |
178 | cursal.pc = 0; |
179 | cursal.end = 0; | |
0378c332 FN |
180 | |
181 | return cursal; | |
182 | } | |
183 | ||
53cb0458 FN |
184 | /* If the current source file for listing is not set, try and get a default. |
185 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 186 | It may err out if a default cannot be determined. |
53cb0458 FN |
187 | We must be cautious about where it is called, as it can recurse as the |
188 | process of determining a new default may call the caller! | |
189 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 190 | we have without erroring out or trying to get a default. */ |
0378c332 | 191 | |
53cb0458 FN |
192 | void |
193 | set_default_source_symtab_and_line (void) | |
0378c332 | 194 | { |
0378c332 | 195 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 196 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 197 | |
c378eb4e | 198 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
199 | if (current_source_symtab == 0) |
200 | select_source_symtab (0); | |
0378c332 FN |
201 | } |
202 | ||
203 | /* Return the current default file for listing and next line to list | |
204 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 205 | and set the current default to whatever is in SAL. |
c378eb4e | 206 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
207 | |
208 | struct symtab_and_line | |
53cb0458 | 209 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 210 | { |
245c7f48 | 211 | struct symtab_and_line cursal = { 0 }; |
6c95b8df PA |
212 | |
213 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
214 | cursal.symtab = current_source_symtab; |
215 | cursal.line = current_source_line; | |
6c95b8df PA |
216 | cursal.pc = 0; |
217 | cursal.end = 0; | |
0378c332 | 218 | |
6c95b8df | 219 | current_source_pspace = sal->pspace; |
0378c332 FN |
220 | current_source_symtab = sal->symtab; |
221 | current_source_line = sal->line; | |
6c95b8df | 222 | |
0378c332 FN |
223 | return cursal; |
224 | } | |
225 | ||
c378eb4e | 226 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
227 | |
228 | void | |
229 | clear_current_source_symtab_and_line (void) | |
230 | { | |
231 | current_source_symtab = 0; | |
232 | current_source_line = 0; | |
233 | } | |
c5aa993b | 234 | |
c906108c SS |
235 | /* Set the source file default for the "list" command to be S. |
236 | ||
237 | If S is NULL, and we don't have a default, find one. This | |
238 | should only be called when the user actually tries to use the | |
239 | default, since we produce an error if we can't find a reasonable | |
240 | default. Also, since this can cause symbols to be read, doing it | |
241 | before we need to would make things slower than necessary. */ | |
242 | ||
243 | void | |
aa1ee363 | 244 | select_source_symtab (struct symtab *s) |
c906108c SS |
245 | { |
246 | struct symtabs_and_lines sals; | |
247 | struct symtab_and_line sal; | |
c906108c | 248 | struct objfile *ofp; |
c5aa993b | 249 | |
c906108c SS |
250 | if (s) |
251 | { | |
252 | current_source_symtab = s; | |
253 | current_source_line = 1; | |
6c95b8df | 254 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
255 | return; |
256 | } | |
257 | ||
258 | if (current_source_symtab) | |
259 | return; | |
260 | ||
261 | /* Make the default place to list be the function `main' | |
262 | if one exists. */ | |
2570f2b7 | 263 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 264 | { |
39cf75f7 DE |
265 | sals = decode_line_with_current_source (main_name (), |
266 | DECODE_LINE_FUNFIRSTLINE); | |
c906108c | 267 | sal = sals.sals[0]; |
b8c9b27d | 268 | xfree (sals.sals); |
6c95b8df | 269 | current_source_pspace = sal.pspace; |
c906108c SS |
270 | current_source_symtab = sal.symtab; |
271 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
272 | if (current_source_symtab) | |
c5aa993b | 273 | return; |
c906108c | 274 | } |
c5aa993b | 275 | |
8340a3fb LM |
276 | /* Alright; find the last file in the symtab list (ignoring .h's |
277 | and namespace symtabs). */ | |
c906108c SS |
278 | |
279 | current_source_line = 1; | |
280 | ||
6c95b8df | 281 | ALL_OBJFILES (ofp) |
c906108c | 282 | { |
c5aa993b | 283 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 284 | { |
591e78ff | 285 | const char *name = s->filename; |
c906108c | 286 | int len = strlen (name); |
433759f7 | 287 | |
8340a3fb LM |
288 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
289 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
290 | { |
291 | current_source_pspace = current_program_space; | |
292 | current_source_symtab = s; | |
293 | } | |
c906108c SS |
294 | } |
295 | } | |
6c95b8df | 296 | |
c906108c SS |
297 | if (current_source_symtab) |
298 | return; | |
299 | ||
6c95b8df | 300 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
301 | { |
302 | if (ofp->sf) | |
303 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
304 | if (s) | |
305 | current_source_symtab = s; | |
306 | } | |
c906108c SS |
307 | if (current_source_symtab) |
308 | return; | |
309 | ||
8a3fe4f8 | 310 | error (_("Can't find a default source file")); |
c906108c SS |
311 | } |
312 | \f | |
99e7ae30 DE |
313 | /* Handler for "set directories path-list" command. |
314 | "set dir mumble" doesn't prepend paths, it resets the entire | |
315 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
316 | ||
317 | static void | |
318 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
319 | { | |
320 | /* This is the value that was set. | |
321 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
322 | char *set_path = source_path; | |
323 | ||
324 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
325 | the list by calling init_source_path. If they appear earlier in | |
326 | SET_PATH then mod_path will move them appropriately. | |
327 | mod_path will also remove duplicates. */ | |
328 | init_source_path (); | |
329 | if (*set_path != '\0') | |
330 | mod_path (set_path, &source_path); | |
331 | ||
332 | xfree (set_path); | |
333 | } | |
334 | ||
335 | /* Print the list of source directories. | |
336 | This is used by the "ld" command, so it has the signature of a command | |
337 | function. */ | |
338 | ||
c906108c | 339 | static void |
99e7ae30 | 340 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
341 | { |
342 | puts_filtered ("Source directories searched: "); | |
343 | puts_filtered (source_path); | |
344 | puts_filtered ("\n"); | |
345 | } | |
346 | ||
99e7ae30 DE |
347 | /* Handler for "show directories" command. */ |
348 | ||
349 | static void | |
350 | show_directories_command (struct ui_file *file, int from_tty, | |
351 | struct cmd_list_element *c, const char *value) | |
352 | { | |
353 | show_directories_1 (NULL, from_tty); | |
354 | } | |
355 | ||
00174a86 TT |
356 | /* Forget line positions and file names for the symtabs in a |
357 | particular objfile. */ | |
358 | ||
359 | void | |
360 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
361 | { | |
362 | struct symtab *s; | |
363 | ||
364 | ALL_OBJFILE_SYMTABS (objfile, s) | |
365 | { | |
366 | if (s->line_charpos != NULL) | |
367 | { | |
368 | xfree (s->line_charpos); | |
369 | s->line_charpos = NULL; | |
370 | } | |
371 | if (s->fullname != NULL) | |
372 | { | |
373 | xfree (s->fullname); | |
374 | s->fullname = NULL; | |
375 | } | |
00174a86 | 376 | } |
6f809020 DE |
377 | |
378 | if (objfile->sf) | |
379 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
380 | } |
381 | ||
c906108c SS |
382 | /* Forget what we learned about line positions in source files, and |
383 | which directories contain them; must check again now since files | |
384 | may be found in a different directory now. */ | |
385 | ||
386 | void | |
fba45db2 | 387 | forget_cached_source_info (void) |
c906108c | 388 | { |
6c95b8df | 389 | struct program_space *pspace; |
52f0bd74 | 390 | struct objfile *objfile; |
c906108c | 391 | |
6c95b8df PA |
392 | ALL_PSPACES (pspace) |
393 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 394 | { |
00174a86 | 395 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 396 | } |
c4e86dd4 DJ |
397 | |
398 | last_source_visited = NULL; | |
c906108c SS |
399 | } |
400 | ||
401 | void | |
fba45db2 | 402 | init_source_path (void) |
c906108c SS |
403 | { |
404 | char buf[20]; | |
405 | ||
08850b56 | 406 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 407 | source_path = xstrdup (buf); |
c906108c SS |
408 | forget_cached_source_info (); |
409 | } | |
410 | ||
411 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 412 | |
28da1647 | 413 | static void |
fba45db2 | 414 | directory_command (char *dirname, int from_tty) |
c906108c SS |
415 | { |
416 | dont_repeat (); | |
c378eb4e | 417 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
418 | if (dirname == 0) |
419 | { | |
80618b99 | 420 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 421 | { |
b8c9b27d | 422 | xfree (source_path); |
c906108c SS |
423 | init_source_path (); |
424 | } | |
425 | } | |
426 | else | |
427 | { | |
428 | mod_path (dirname, &source_path); | |
c4e86dd4 | 429 | forget_cached_source_info (); |
c906108c SS |
430 | } |
431 | if (from_tty) | |
99e7ae30 | 432 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
433 | } |
434 | ||
13d35ae5 AS |
435 | /* Add a path given with the -d command line switch. |
436 | This will not be quoted so we must not treat spaces as separators. */ | |
437 | ||
438 | void | |
439 | directory_switch (char *dirname, int from_tty) | |
440 | { | |
441 | add_path (dirname, &source_path, 0); | |
442 | } | |
443 | ||
c906108c SS |
444 | /* Add zero or more directories to the front of an arbitrary path. */ |
445 | ||
446 | void | |
fba45db2 | 447 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
448 | { |
449 | add_path (dirname, which_path, 1); | |
450 | } | |
451 | ||
452 | /* Workhorse of mod_path. Takes an extra argument to determine | |
453 | if dirname should be parsed for separators that indicate multiple | |
454 | directories. This allows for interfaces that pre-parse the dirname | |
455 | and allow specification of traditional separator characters such | |
c378eb4e | 456 | as space or tab. */ |
c04e0a08 JJ |
457 | |
458 | void | |
459 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
460 | { |
461 | char *old = *which_path; | |
462 | int prefix = 0; | |
e4ab2fad JK |
463 | VEC (char_ptr) *dir_vec = NULL; |
464 | struct cleanup *back_to; | |
465 | int ix; | |
466 | char *name; | |
c906108c SS |
467 | |
468 | if (dirname == 0) | |
469 | return; | |
470 | ||
13d35ae5 AS |
471 | if (parse_separators) |
472 | { | |
e4ab2fad JK |
473 | char **argv, **argvp; |
474 | ||
13d35ae5 | 475 | /* This will properly parse the space and tab separators |
e4ab2fad | 476 | and any quotes that may exist. */ |
d1a41061 | 477 | argv = gdb_buildargv (dirname); |
13d35ae5 | 478 | |
e4ab2fad JK |
479 | for (argvp = argv; *argvp; argvp++) |
480 | dirnames_to_char_ptr_vec_append (&dir_vec, *argvp); | |
481 | ||
482 | freeargv (argv); | |
13d35ae5 AS |
483 | } |
484 | else | |
e4ab2fad JK |
485 | VEC_safe_push (char_ptr, dir_vec, xstrdup (dirname)); |
486 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
c906108c | 487 | |
e4ab2fad | 488 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, name); ++ix) |
c906108c | 489 | { |
aa1ee363 | 490 | char *p; |
c906108c SS |
491 | struct stat st; |
492 | ||
e4ab2fad JK |
493 | /* Spaces and tabs will have been removed by buildargv(). |
494 | NAME is the start of the directory. | |
495 | P is the '\0' following the end. */ | |
496 | p = name + strlen (name); | |
13d35ae5 AS |
497 | |
498 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 499 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 500 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 501 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 502 | #endif |
13d35ae5 | 503 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 504 | /* Sigh. "foo/" => "foo" */ |
c906108c | 505 | --p; |
c906108c SS |
506 | *p = '\0'; |
507 | ||
7be570e7 | 508 | while (p > name && p[-1] == '.') |
c906108c SS |
509 | { |
510 | if (p - name == 1) | |
511 | { | |
512 | /* "." => getwd (). */ | |
513 | name = current_directory; | |
514 | goto append; | |
515 | } | |
fe4e3eb8 | 516 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
517 | { |
518 | if (p - name == 2) | |
519 | { | |
520 | /* "/." => "/". */ | |
521 | *--p = '\0'; | |
522 | goto append; | |
523 | } | |
524 | else | |
525 | { | |
526 | /* "...foo/." => "...foo". */ | |
527 | p -= 2; | |
528 | *p = '\0'; | |
529 | continue; | |
530 | } | |
531 | } | |
532 | else | |
533 | break; | |
534 | } | |
535 | ||
536 | if (name[0] == '~') | |
537 | name = tilde_expand (name); | |
c3690141 | 538 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 539 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 540 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 541 | #endif |
fe4e3eb8 | 542 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 543 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
544 | else |
545 | name = savestring (name, p - name); | |
b8c9b27d | 546 | make_cleanup (xfree, name); |
c906108c SS |
547 | |
548 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
549 | if (name[0] != '$') |
550 | { | |
551 | /* These are warnings, not errors, since we don't want a | |
552 | non-existent directory in a .gdbinit file to stop processing | |
553 | of the .gdbinit file. | |
554 | ||
555 | Whether they get added to the path is more debatable. Current | |
556 | answer is yes, in case the user wants to go make the directory | |
557 | or whatever. If the directory continues to not exist/not be | |
558 | a directory/etc, then having them in the path should be | |
559 | harmless. */ | |
560 | if (stat (name, &st) < 0) | |
561 | { | |
562 | int save_errno = errno; | |
433759f7 | 563 | |
c5aa993b JM |
564 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
565 | print_sys_errmsg (name, save_errno); | |
566 | } | |
567 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 568 | warning (_("%s is not a directory."), name); |
c5aa993b | 569 | } |
c906108c SS |
570 | |
571 | append: | |
572 | { | |
aa1ee363 | 573 | unsigned int len = strlen (name); |
5ee4ed9f | 574 | char tinybuf[2]; |
c906108c SS |
575 | |
576 | p = *which_path; | |
5e3f4fab | 577 | while (1) |
c906108c | 578 | { |
5e3f4fab EBM |
579 | /* FIXME: we should use realpath() or its work-alike |
580 | before comparing. Then all the code above which | |
581 | removes excess slashes and dots could simply go away. */ | |
582 | if (!filename_ncmp (p, name, len) | |
583 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
584 | { | |
585 | /* Found it in the search path, remove old copy. */ | |
586 | if (p > *which_path) | |
587 | { | |
588 | /* Back over leading separator. */ | |
589 | p--; | |
590 | } | |
591 | if (prefix > p - *which_path) | |
592 | { | |
593 | /* Same dir twice in one cmd. */ | |
594 | goto skip_dup; | |
595 | } | |
596 | /* Copy from next '\0' or ':'. */ | |
597 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
598 | } | |
599 | p = strchr (p, DIRNAME_SEPARATOR); | |
600 | if (p != 0) | |
601 | ++p; | |
602 | else | |
603 | break; | |
c906108c | 604 | } |
c906108c | 605 | |
5ee4ed9f JK |
606 | tinybuf[0] = DIRNAME_SEPARATOR; |
607 | tinybuf[1] = '\0'; | |
c906108c | 608 | |
5ee4ed9f JK |
609 | /* If we have already tacked on a name(s) in this command, |
610 | be sure they stay on the front as we tack on some | |
611 | more. */ | |
612 | if (prefix) | |
613 | { | |
614 | char *temp, c; | |
615 | ||
616 | c = old[prefix]; | |
617 | old[prefix] = '\0'; | |
618 | temp = concat (old, tinybuf, name, (char *)NULL); | |
619 | old[prefix] = c; | |
620 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
621 | prefix = strlen (temp); | |
622 | xfree (temp); | |
623 | } | |
624 | else | |
625 | { | |
626 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
627 | old, (char *)NULL); | |
628 | prefix = strlen (name); | |
c906108c | 629 | } |
5ee4ed9f JK |
630 | xfree (old); |
631 | old = *which_path; | |
c906108c | 632 | } |
82ae4854 | 633 | skip_dup: |
b27cf2b3 | 634 | ; |
c5aa993b | 635 | } |
e4ab2fad JK |
636 | |
637 | do_cleanups (back_to); | |
c906108c SS |
638 | } |
639 | ||
640 | ||
641 | static void | |
fba45db2 | 642 | source_info (char *ignore, int from_tty) |
c906108c | 643 | { |
52f0bd74 | 644 | struct symtab *s = current_source_symtab; |
c906108c SS |
645 | |
646 | if (!s) | |
647 | { | |
a3f17187 | 648 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
649 | return; |
650 | } | |
a3f17187 | 651 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 652 | if (s->dirname) |
a3f17187 | 653 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 654 | if (s->fullname) |
a3f17187 | 655 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 656 | if (s->nlines) |
a3f17187 | 657 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
658 | s->nlines == 1 ? "" : "s"); |
659 | ||
a3f17187 AC |
660 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
661 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
662 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 663 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 664 | } |
c5aa993b | 665 | \f |
c906108c | 666 | |
c378eb4e | 667 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
668 | static int |
669 | is_regular_file (const char *name) | |
670 | { | |
671 | struct stat st; | |
672 | const int status = stat (name, &st); | |
673 | ||
674 | /* Stat should never fail except when the file does not exist. | |
675 | If stat fails, analyze the source of error and return True | |
676 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
677 | on obscure systems where stat does not work as expected. */ |
678 | ||
1da1a192 JB |
679 | if (status != 0) |
680 | return (errno != ENOENT); | |
681 | ||
682 | return S_ISREG (st.st_mode); | |
683 | } | |
c906108c | 684 | |
c906108c | 685 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
686 | using mode MODE in the calls to open. You cannot use this function to |
687 | create files (O_CREAT). | |
c906108c | 688 | |
014d698b EZ |
689 | OPTS specifies the function behaviour in specific cases. |
690 | ||
691 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 692 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
693 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
694 | disables searching of the path (this is so that "exec-file ./foo" or | |
695 | "symbol-file ./foo" insures that you get that particular version of | |
696 | foo or an error message). | |
c906108c | 697 | |
014d698b EZ |
698 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
699 | searched in path (we usually want this for source files but not for | |
700 | executables). | |
701 | ||
e7a8479f | 702 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 703 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
704 | have to take special pains to avoid doubling the "/" between the directory |
705 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
706 | source file name!!! | |
707 | ||
492c0ab7 JK |
708 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
709 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
710 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
711 | effect. | |
1f0c4988 | 712 | |
c906108c SS |
713 | If a file is found, return the descriptor. |
714 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
715 | ||
716 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 717 | >>>> eg executable, non-directory. */ |
c906108c | 718 | int |
014d698b | 719 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 720 | int mode, char **filename_opened) |
c906108c | 721 | { |
52f0bd74 AC |
722 | int fd; |
723 | char *filename; | |
c906108c | 724 | int alloclen; |
e4ab2fad JK |
725 | VEC (char_ptr) *dir_vec; |
726 | struct cleanup *back_to; | |
727 | int ix; | |
728 | char *dir; | |
c906108c | 729 | |
fbdebf46 JK |
730 | /* The open syscall MODE parameter is not specified. */ |
731 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
732 | gdb_assert (string != NULL); |
733 | ||
734 | /* A file with an empty name cannot possibly exist. Report a failure | |
735 | without further checking. | |
736 | ||
737 | This is an optimization which also defends us against buggy | |
738 | implementations of the "stat" function. For instance, we have | |
739 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
740 | when the debugger is started with an empty argument. */ | |
741 | if (string[0] == '\0') | |
742 | { | |
743 | errno = ENOENT; | |
744 | return -1; | |
745 | } | |
fbdebf46 | 746 | |
c906108c SS |
747 | if (!path) |
748 | path = "."; | |
749 | ||
c906108c | 750 | mode |= O_BINARY; |
c906108c | 751 | |
014d698b | 752 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
753 | { |
754 | int i; | |
072b1022 DJ |
755 | |
756 | if (is_regular_file (string)) | |
757 | { | |
758 | filename = alloca (strlen (string) + 1); | |
759 | strcpy (filename, string); | |
614c279d | 760 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
761 | if (fd >= 0) |
762 | goto done; | |
763 | } | |
764 | else | |
3f565f1e DJ |
765 | { |
766 | filename = NULL; | |
767 | fd = -1; | |
768 | } | |
072b1022 | 769 | |
014d698b EZ |
770 | if (!(opts & OPF_SEARCH_IN_PATH)) |
771 | for (i = 0; string[i]; i++) | |
772 | if (IS_DIR_SEPARATOR (string[i])) | |
773 | goto done; | |
c906108c SS |
774 | } |
775 | ||
e6d9b9c2 DE |
776 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
777 | if (HAS_DRIVE_SPEC (string)) | |
778 | string = STRIP_DRIVE_SPEC (string); | |
779 | ||
c378eb4e | 780 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
781 | while (IS_DIR_SEPARATOR(string[0])) |
782 | string++; | |
783 | ||
c906108c | 784 | /* ./foo => foo */ |
fe4e3eb8 | 785 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
786 | string += 2; |
787 | ||
788 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 789 | filename = alloca (alloclen); |
c906108c | 790 | fd = -1; |
e4ab2fad JK |
791 | |
792 | dir_vec = dirnames_to_char_ptr_vec (path); | |
793 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
794 | ||
795 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, dir); ++ix) | |
c906108c | 796 | { |
e4ab2fad | 797 | size_t len = strlen (dir); |
c906108c | 798 | |
e4ab2fad | 799 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
800 | { |
801 | /* Name is $cwd -- insert current directory name instead. */ | |
802 | int newlen; | |
803 | ||
c378eb4e | 804 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
805 | len = strlen (current_directory); |
806 | newlen = len + strlen (string) + 2; | |
807 | if (newlen > alloclen) | |
808 | { | |
809 | alloclen = newlen; | |
1f8cc6db | 810 | filename = alloca (alloclen); |
c5aa993b JM |
811 | } |
812 | strcpy (filename, current_directory); | |
813 | } | |
ebd86fb5 TJB |
814 | else if (strchr(dir, '~')) |
815 | { | |
816 | /* See whether we need to expand the tilde. */ | |
817 | int newlen; | |
818 | char *tilde_expanded; | |
819 | ||
820 | tilde_expanded = tilde_expand (dir); | |
821 | ||
822 | /* First, realloc the filename buffer if too short. */ | |
823 | len = strlen (tilde_expanded); | |
824 | newlen = len + strlen (string) + 2; | |
825 | if (newlen > alloclen) | |
826 | { | |
827 | alloclen = newlen; | |
828 | filename = alloca (alloclen); | |
829 | } | |
830 | strcpy (filename, tilde_expanded); | |
831 | xfree (tilde_expanded); | |
832 | } | |
c5aa993b JM |
833 | else |
834 | { | |
835 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 836 | strcpy (filename, dir); |
08001717 DE |
837 | |
838 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
839 | don't have enough information to expand it. The user *could* | |
840 | have an actual directory named '$cdir' but handling that would | |
841 | be confusing, it would mean different things in different | |
842 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
843 | We can get $cdir when loading scripts. When loading source files | |
844 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 845 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 846 | continue; |
c906108c | 847 | } |
c906108c | 848 | |
c378eb4e | 849 | /* Remove trailing slashes. */ |
fe4e3eb8 | 850 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
851 | filename[--len] = 0; |
852 | ||
c5aa993b | 853 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
854 | strcat (filename, string); |
855 | ||
1da1a192 | 856 | if (is_regular_file (filename)) |
5e987968 | 857 | { |
614c279d | 858 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
859 | if (fd >= 0) |
860 | break; | |
861 | } | |
c906108c SS |
862 | } |
863 | ||
e4ab2fad JK |
864 | do_cleanups (back_to); |
865 | ||
c5aa993b | 866 | done: |
c906108c SS |
867 | if (filename_opened) |
868 | { | |
f5b95b50 | 869 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 870 | if (fd < 0) |
1f8cc6db | 871 | *filename_opened = NULL; |
04affae3 JK |
872 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
873 | *filename_opened = gdb_realpath (filename); | |
c906108c | 874 | else |
04affae3 | 875 | *filename_opened = gdb_abspath (filename); |
c906108c | 876 | } |
c906108c SS |
877 | |
878 | return fd; | |
879 | } | |
880 | ||
c5aa993b | 881 | |
c906108c SS |
882 | /* This is essentially a convenience, for clients that want the behaviour |
883 | of openp, using source_path, but that really don't want the file to be | |
884 | opened but want instead just to know what the full pathname is (as | |
885 | qualified against source_path). | |
886 | ||
887 | The current working directory is searched first. | |
888 | ||
889 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
890 | set to the fully-qualified pathname. | |
891 | ||
5e987968 | 892 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 893 | int |
24f81874 | 894 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 895 | { |
c5aa993b | 896 | int fd; |
c906108c | 897 | |
492c0ab7 JK |
898 | fd = openp (source_path, |
899 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
900 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
901 | if (fd < 0) |
902 | { | |
903 | *full_pathname = NULL; | |
904 | return 0; | |
905 | } | |
906 | ||
907 | close (fd); | |
908 | return 1; | |
909 | } | |
910 | ||
2f61ca93 JB |
911 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
912 | applied to PATH. */ | |
913 | ||
914 | static int | |
915 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
916 | const char *path) | |
917 | { | |
918 | const int from_len = strlen (rule->from); | |
919 | const int path_len = strlen (path); | |
920 | char *path_start; | |
921 | ||
922 | if (path_len < from_len) | |
923 | return 0; | |
924 | ||
925 | /* The substitution rules are anchored at the start of the path, | |
926 | so the path should start with rule->from. There is no filename | |
927 | comparison routine, so we need to extract the first FROM_LEN | |
928 | characters from PATH first and use that to do the comparison. */ | |
929 | ||
930 | path_start = alloca (from_len + 1); | |
931 | strncpy (path_start, path, from_len); | |
932 | path_start[from_len] = '\0'; | |
933 | ||
934 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
935 | return 0; | |
936 | ||
937 | /* Make sure that the region in the path that matches the substitution | |
938 | rule is immediately followed by a directory separator (or the end of | |
939 | string character). */ | |
940 | ||
941 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
942 | return 0; | |
943 | ||
944 | return 1; | |
945 | } | |
946 | ||
947 | /* Find the substitute-path rule that applies to PATH and return it. | |
948 | Return NULL if no rule applies. */ | |
949 | ||
950 | static struct substitute_path_rule * | |
951 | get_substitute_path_rule (const char *path) | |
952 | { | |
953 | struct substitute_path_rule *rule = substitute_path_rules; | |
954 | ||
955 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
956 | rule = rule->next; | |
957 | ||
958 | return rule; | |
959 | } | |
960 | ||
961 | /* If the user specified a source path substitution rule that applies | |
962 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 963 | be deallocated afterwards. |
2f61ca93 JB |
964 | |
965 | Return NULL if no substitution rule was specified by the user, | |
966 | or if no rule applied to the given PATH. */ | |
967 | ||
fbd9ab74 | 968 | char * |
2f61ca93 JB |
969 | rewrite_source_path (const char *path) |
970 | { | |
971 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
972 | char *new_path; | |
973 | int from_len; | |
974 | ||
975 | if (rule == NULL) | |
976 | return NULL; | |
977 | ||
978 | from_len = strlen (rule->from); | |
979 | ||
980 | /* Compute the rewritten path and return it. */ | |
981 | ||
982 | new_path = | |
983 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
984 | strcpy (new_path, rule->to); | |
985 | strcat (new_path, path + from_len); | |
986 | ||
987 | return new_path; | |
988 | } | |
989 | ||
ccefe4c4 | 990 | int |
e2357892 | 991 | find_and_open_source (const char *filename, |
5e987968 AS |
992 | const char *dirname, |
993 | char **fullname) | |
c906108c SS |
994 | { |
995 | char *path = source_path; | |
31889e00 | 996 | const char *p; |
c906108c | 997 | int result; |
795d915c | 998 | struct cleanup *cleanup; |
c906108c | 999 | |
c378eb4e | 1000 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1001 | |
57c22c6c | 1002 | if (*fullname) |
c906108c | 1003 | { |
2f61ca93 JB |
1004 | /* The user may have requested that source paths be rewritten |
1005 | according to substitution rules he provided. If a substitution | |
1006 | rule applies to this path, then apply it. */ | |
1007 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
1008 | ||
1009 | if (rewritten_fullname != NULL) | |
1010 | { | |
1011 | xfree (*fullname); | |
1012 | *fullname = rewritten_fullname; | |
1013 | } | |
1014 | ||
614c279d | 1015 | result = gdb_open_cloexec (*fullname, OPEN_MODE, 0); |
c906108c | 1016 | if (result >= 0) |
bc3aa6c3 | 1017 | { |
f5b95b50 | 1018 | char *lpath = gdb_realpath (*fullname); |
bc3aa6c3 DE |
1019 | |
1020 | xfree (*fullname); | |
1021 | *fullname = lpath; | |
1022 | return result; | |
1023 | } | |
1024 | ||
c378eb4e | 1025 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1026 | xfree (*fullname); |
57c22c6c | 1027 | *fullname = NULL; |
c906108c SS |
1028 | } |
1029 | ||
795d915c TT |
1030 | cleanup = make_cleanup (null_cleanup, NULL); |
1031 | ||
57c22c6c | 1032 | if (dirname != NULL) |
c906108c | 1033 | { |
2f61ca93 JB |
1034 | /* If necessary, rewrite the compilation directory name according |
1035 | to the source path substitution rules specified by the user. */ | |
1036 | ||
1037 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1038 | ||
1039 | if (rewritten_dirname != NULL) | |
1040 | { | |
1041 | make_cleanup (xfree, rewritten_dirname); | |
1042 | dirname = rewritten_dirname; | |
1043 | } | |
1044 | ||
c378eb4e MS |
1045 | /* Replace a path entry of $cdir with the compilation directory |
1046 | name. */ | |
c906108c SS |
1047 | #define cdir_len 5 |
1048 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1049 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1050 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1051 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1052 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1053 | { |
1054 | int len; | |
1055 | ||
1056 | path = (char *) | |
57c22c6c | 1057 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1058 | len = p - source_path; |
c5aa993b | 1059 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1060 | strcpy (path + len, dirname); /* new stuff */ |
1061 | strcat (path + len, source_path + len + cdir_len); /* After | |
1062 | $cdir */ | |
c906108c SS |
1063 | } |
1064 | } | |
8da2a1df DJ |
1065 | |
1066 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1067 | { |
8da2a1df DJ |
1068 | /* If filename is absolute path, try the source path |
1069 | substitution on it. */ | |
56163ce1 JB |
1070 | char *rewritten_filename = rewrite_source_path (filename); |
1071 | ||
1072 | if (rewritten_filename != NULL) | |
1073 | { | |
1074 | make_cleanup (xfree, rewritten_filename); | |
1075 | filename = rewritten_filename; | |
1076 | } | |
1077 | } | |
c906108c | 1078 | |
492c0ab7 JK |
1079 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1080 | OPEN_MODE, fullname); | |
c906108c SS |
1081 | if (result < 0) |
1082 | { | |
c378eb4e | 1083 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1084 | p = lbasename (filename); |
1085 | if (p != filename) | |
492c0ab7 JK |
1086 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1087 | OPEN_MODE, fullname); | |
c906108c | 1088 | } |
c906108c | 1089 | |
795d915c | 1090 | do_cleanups (cleanup); |
c906108c SS |
1091 | return result; |
1092 | } | |
1093 | ||
57c22c6c BR |
1094 | /* Open a source file given a symtab S. Returns a file descriptor or |
1095 | negative number for error. | |
1096 | ||
c378eb4e | 1097 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1098 | |
1099 | int | |
1100 | open_source_file (struct symtab *s) | |
1101 | { | |
5e987968 AS |
1102 | if (!s) |
1103 | return -1; | |
57c22c6c | 1104 | |
e2357892 | 1105 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1106 | } |
1107 | ||
1108 | /* Finds the fullname that a symtab represents. | |
c906108c | 1109 | |
f35a17b5 JK |
1110 | This functions finds the fullname and saves it in s->fullname. |
1111 | It will also return the value. | |
57c22c6c BR |
1112 | |
1113 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1114 | the expected fullname is used. Therefore the files does not have to |
1115 | exist. */ | |
256f06f3 | 1116 | |
0b0865da | 1117 | const char * |
57c22c6c | 1118 | symtab_to_fullname (struct symtab *s) |
c906108c | 1119 | { |
256f06f3 DE |
1120 | /* Use cached copy if we have it. |
1121 | We rely on forget_cached_source_info being called appropriately | |
1122 | to handle cases like the file being moved. */ | |
f35a17b5 | 1123 | if (s->fullname == NULL) |
5e987968 | 1124 | { |
f35a17b5 JK |
1125 | int fd = find_and_open_source (s->filename, s->dirname, &s->fullname); |
1126 | ||
1127 | if (fd >= 0) | |
1128 | close (fd); | |
f35a17b5 | 1129 | else |
f0a4b570 JK |
1130 | { |
1131 | char *fullname; | |
1132 | struct cleanup *back_to; | |
1133 | ||
1134 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1135 | should report the pathname where GDB tried to find the file. */ | |
1136 | ||
57b3c00c | 1137 | if (s->dirname == NULL || IS_ABSOLUTE_PATH (s->filename)) |
f0a4b570 JK |
1138 | fullname = xstrdup (s->filename); |
1139 | else | |
1140 | fullname = concat (s->dirname, SLASH_STRING, s->filename, NULL); | |
1141 | ||
1142 | back_to = make_cleanup (xfree, fullname); | |
1143 | s->fullname = rewrite_source_path (fullname); | |
1144 | if (s->fullname == NULL) | |
1145 | s->fullname = xstrdup (fullname); | |
1146 | do_cleanups (back_to); | |
1147 | } | |
f35a17b5 | 1148 | } |
c906108c | 1149 | |
f35a17b5 | 1150 | return s->fullname; |
57c22c6c | 1151 | } |
1b56eb55 JK |
1152 | |
1153 | /* See commentary in source.h. */ | |
1154 | ||
1155 | const char * | |
1156 | symtab_to_filename_for_display (struct symtab *symtab) | |
1157 | { | |
1158 | if (filename_display_string == filename_display_basename) | |
1159 | return lbasename (symtab->filename); | |
1160 | else if (filename_display_string == filename_display_absolute) | |
1161 | return symtab_to_fullname (symtab); | |
1162 | else if (filename_display_string == filename_display_relative) | |
1163 | return symtab->filename; | |
1164 | else | |
1165 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1166 | } | |
5e987968 | 1167 | \f |
c906108c SS |
1168 | /* Create and initialize the table S->line_charpos that records |
1169 | the positions of the lines in the source file, which is assumed | |
1170 | to be open on descriptor DESC. | |
1171 | All set S->nlines to the number of such lines. */ | |
1172 | ||
1173 | void | |
fba45db2 | 1174 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1175 | { |
1176 | struct stat st; | |
52f0bd74 | 1177 | char *data, *p, *end; |
c906108c SS |
1178 | int nlines = 0; |
1179 | int lines_allocated = 1000; | |
1180 | int *line_charpos; | |
1181 | long mtime = 0; | |
1182 | int size; | |
1183 | ||
be8ca11b | 1184 | gdb_assert (s); |
7936743b | 1185 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c | 1186 | if (fstat (desc, &st) < 0) |
05cba821 | 1187 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c | 1188 | |
be8ca11b | 1189 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1190 | mtime = s->objfile->mtime; |
c906108c | 1191 | else if (exec_bfd) |
c04ea773 | 1192 | mtime = exec_bfd_mtime; |
c906108c SS |
1193 | |
1194 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1195 | warning (_("Source file is more recent than executable.")); |
c906108c | 1196 | |
c906108c SS |
1197 | { |
1198 | struct cleanup *old_cleanups; | |
1199 | ||
1200 | /* st_size might be a large type, but we only support source files whose | |
1201 | size fits in an int. */ | |
1202 | size = (int) st.st_size; | |
1203 | ||
1204 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1205 | run into various kinds of limits on stack size. */ | |
1206 | data = (char *) xmalloc (size); | |
b8c9b27d | 1207 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1208 | |
1209 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1210 | size = myread (desc, data, size); | |
1211 | if (size < 0) | |
05cba821 | 1212 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1213 | end = data + size; |
1214 | p = data; | |
1215 | line_charpos[0] = 0; | |
1216 | nlines = 1; | |
1217 | while (p != end) | |
1218 | { | |
1219 | if (*p++ == '\n' | |
c5aa993b | 1220 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1221 | && p != end) |
1222 | { | |
1223 | if (nlines == lines_allocated) | |
1224 | { | |
1225 | lines_allocated *= 2; | |
1226 | line_charpos = | |
0efffb96 AC |
1227 | (int *) xrealloc ((char *) line_charpos, |
1228 | sizeof (int) * lines_allocated); | |
c906108c SS |
1229 | } |
1230 | line_charpos[nlines++] = p - data; | |
1231 | } | |
1232 | } | |
1233 | do_cleanups (old_cleanups); | |
1234 | } | |
d4d4db8a | 1235 | |
c906108c SS |
1236 | s->nlines = nlines; |
1237 | s->line_charpos = | |
0efffb96 | 1238 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1239 | |
1240 | } | |
1241 | ||
c906108c | 1242 | \f |
c5aa993b | 1243 | |
c906108c SS |
1244 | /* Get full pathname and line number positions for a symtab. |
1245 | Return nonzero if line numbers may have changed. | |
1246 | Set *FULLNAME to actual name of the file as found by `openp', | |
1247 | or to 0 if the file is not found. */ | |
1248 | ||
1249 | static int | |
fba45db2 | 1250 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1251 | { |
52f0bd74 | 1252 | int desc, linenums_changed = 0; |
9fe4a216 | 1253 | struct cleanup *cleanups; |
c5aa993b | 1254 | |
c906108c SS |
1255 | desc = open_source_file (s); |
1256 | if (desc < 0) | |
1257 | { | |
1258 | if (fullname) | |
1259 | *fullname = NULL; | |
1260 | return 0; | |
c5aa993b | 1261 | } |
9fe4a216 | 1262 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1263 | if (fullname) |
1264 | *fullname = s->fullname; | |
c5aa993b JM |
1265 | if (s->line_charpos == 0) |
1266 | linenums_changed = 1; | |
1267 | if (linenums_changed) | |
1268 | find_source_lines (s, desc); | |
9fe4a216 | 1269 | do_cleanups (cleanups); |
c906108c SS |
1270 | return linenums_changed; |
1271 | } | |
1272 | ||
1273 | /* Print text describing the full name of the source file S | |
1274 | and the line number LINE and its corresponding character position. | |
1275 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1276 | can easily find it. | |
1277 | ||
1278 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1279 | ||
1280 | Return 1 if successful, 0 if could not find the file. */ | |
1281 | ||
1282 | int | |
fba45db2 KB |
1283 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1284 | CORE_ADDR pc) | |
c906108c SS |
1285 | { |
1286 | if (s->line_charpos == 0) | |
c5aa993b | 1287 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1288 | if (s->fullname == 0) |
1289 | return 0; | |
1290 | if (line > s->nlines) | |
1291 | /* Don't index off the end of the line_charpos array. */ | |
1292 | return 0; | |
1293 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1294 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1295 | |
1296 | current_source_line = line; | |
1297 | first_line_listed = line; | |
1298 | last_line_listed = line; | |
1299 | current_source_symtab = s; | |
1300 | return 1; | |
1301 | } | |
c906108c | 1302 | \f |
c5aa993b | 1303 | |
c906108c | 1304 | /* Print source lines from the file of symtab S, |
c378eb4e | 1305 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1306 | |
1307 | static void | |
dfaae886 MM |
1308 | print_source_lines_base (struct symtab *s, int line, int stopline, |
1309 | enum print_source_lines_flags flags) | |
c906108c | 1310 | { |
52f0bd74 AC |
1311 | int c; |
1312 | int desc; | |
f4dfd9c0 | 1313 | int noprint = 0; |
52f0bd74 | 1314 | FILE *stream; |
c906108c | 1315 | int nlines = stopline - line; |
7c8a8b04 | 1316 | struct cleanup *cleanup; |
79a45e25 | 1317 | struct ui_out *uiout = current_uiout; |
c906108c | 1318 | |
c378eb4e | 1319 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1320 | current_source_symtab = s; |
1321 | current_source_line = line; | |
1322 | first_line_listed = line; | |
1323 | ||
3e43a32a | 1324 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1325 | number. */ |
8b93c638 JM |
1326 | if (ui_out_test_flags (uiout, ui_source_list)) |
1327 | { | |
c378eb4e | 1328 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1329 | if ((s != last_source_visited) || (!last_source_error)) |
1330 | { | |
1331 | last_source_visited = s; | |
1332 | desc = open_source_file (s); | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | desc = last_source_error; | |
dfaae886 | 1337 | flags |= PRINT_SOURCE_LINES_NOERROR; |
c5aa993b | 1338 | } |
8b93c638 JM |
1339 | } |
1340 | else | |
1341 | { | |
f4dfd9c0 | 1342 | desc = last_source_error; |
dfaae886 | 1343 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1344 | noprint = 1; |
8b93c638 | 1345 | } |
c906108c | 1346 | |
f4dfd9c0 | 1347 | if (desc < 0 || noprint) |
c906108c SS |
1348 | { |
1349 | last_source_error = desc; | |
1350 | ||
dfaae886 | 1351 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1352 | { |
05cba821 JK |
1353 | const char *filename = symtab_to_filename_for_display (s); |
1354 | int len = strlen (filename) + 100; | |
08850b56 PM |
1355 | char *name = alloca (len); |
1356 | ||
05cba821 | 1357 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1358 | print_sys_errmsg (name, errno); |
1359 | } | |
1360 | else | |
fc0ae648 AB |
1361 | { |
1362 | ui_out_field_int (uiout, "line", line); | |
1363 | ui_out_text (uiout, "\tin "); | |
56d397a3 | 1364 | |
23eb71e4 JK |
1365 | /* CLI expects only the "file" field. TUI expects only the |
1366 | "fullname" field (and TUI does break if "file" is printed). | |
1367 | MI expects both fields. ui_source_list is set only for CLI, | |
1368 | not for TUI. */ | |
1369 | if (ui_out_is_mi_like_p (uiout) | |
1370 | || ui_out_test_flags (uiout, ui_source_list)) | |
1371 | ui_out_field_string (uiout, "file", | |
1372 | symtab_to_filename_for_display (s)); | |
56d397a3 JK |
1373 | if (ui_out_is_mi_like_p (uiout) |
1374 | || !ui_out_test_flags (uiout, ui_source_list)) | |
8f1b8b82 JK |
1375 | { |
1376 | const char *s_fullname = symtab_to_fullname (s); | |
1377 | char *local_fullname; | |
1378 | ||
1379 | /* ui_out_field_string may free S_FULLNAME by calling | |
1380 | open_source_file for it again. See e.g., | |
1381 | tui_field_string->tui_show_source. */ | |
1382 | local_fullname = alloca (strlen (s_fullname) + 1); | |
1383 | strcpy (local_fullname, s_fullname); | |
1384 | ||
1385 | ui_out_field_string (uiout, "fullname", local_fullname); | |
1386 | } | |
23eb71e4 | 1387 | |
fc0ae648 AB |
1388 | ui_out_text (uiout, "\n"); |
1389 | } | |
c906108c SS |
1390 | |
1391 | return; | |
1392 | } | |
1393 | ||
1394 | last_source_error = 0; | |
1395 | ||
1396 | if (s->line_charpos == 0) | |
1397 | find_source_lines (s, desc); | |
1398 | ||
1399 | if (line < 1 || line > s->nlines) | |
1400 | { | |
1401 | close (desc); | |
8a3fe4f8 | 1402 | error (_("Line number %d out of range; %s has %d lines."), |
05cba821 | 1403 | line, symtab_to_filename_for_display (s), s->nlines); |
c906108c SS |
1404 | } |
1405 | ||
1406 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1407 | { | |
1408 | close (desc); | |
05cba821 | 1409 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1410 | } |
1411 | ||
1412 | stream = fdopen (desc, FDOPEN_MODE); | |
1413 | clearerr (stream); | |
7c8a8b04 | 1414 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1415 | |
1416 | while (nlines-- > 0) | |
1417 | { | |
8b93c638 JM |
1418 | char buf[20]; |
1419 | ||
1420 | c = fgetc (stream); | |
1421 | if (c == EOF) | |
1422 | break; | |
1423 | last_line_listed = current_source_line; | |
4cd29721 MM |
1424 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1425 | { | |
05cba821 | 1426 | ui_out_text (uiout, symtab_to_filename_for_display (s)); |
4cd29721 MM |
1427 | ui_out_text (uiout, ":"); |
1428 | } | |
08850b56 | 1429 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
8b93c638 JM |
1430 | ui_out_text (uiout, buf); |
1431 | do | |
1432 | { | |
1433 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1434 | { | |
08850b56 | 1435 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
8b93c638 JM |
1436 | ui_out_text (uiout, buf); |
1437 | } | |
1438 | else if (c == 0177) | |
1439 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1440 | else if (c == '\r') |
1441 | { | |
1442 | /* Skip a \r character, but only before a \n. */ | |
1443 | int c1 = fgetc (stream); | |
1444 | ||
1445 | if (c1 != '\n') | |
1446 | printf_filtered ("^%c", c + 0100); | |
1447 | if (c1 != EOF) | |
1448 | ungetc (c1, stream); | |
1449 | } | |
8b93c638 JM |
1450 | else |
1451 | { | |
08850b56 | 1452 | xsnprintf (buf, sizeof (buf), "%c", c); |
8b93c638 JM |
1453 | ui_out_text (uiout, buf); |
1454 | } | |
1455 | } | |
1456 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1457 | } |
1458 | ||
7c8a8b04 | 1459 | do_cleanups (cleanup); |
c906108c SS |
1460 | } |
1461 | \f | |
1462 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1463 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1464 | not the command line version, then the source is shown in the source |
c378eb4e | 1465 | window otherwise it is simply printed. */ |
c906108c | 1466 | |
c5aa993b | 1467 | void |
dfaae886 MM |
1468 | print_source_lines (struct symtab *s, int line, int stopline, |
1469 | enum print_source_lines_flags flags) | |
c906108c | 1470 | { |
dfaae886 | 1471 | print_source_lines_base (s, line, stopline, flags); |
c906108c SS |
1472 | } |
1473 | \f | |
c906108c SS |
1474 | /* Print info on range of pc's in a specified line. */ |
1475 | ||
1476 | static void | |
fba45db2 | 1477 | line_info (char *arg, int from_tty) |
c906108c SS |
1478 | { |
1479 | struct symtabs_and_lines sals; | |
1480 | struct symtab_and_line sal; | |
1481 | CORE_ADDR start_pc, end_pc; | |
1482 | int i; | |
f8eba3c6 | 1483 | struct cleanup *cleanups; |
c906108c | 1484 | |
fe39c653 | 1485 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1486 | |
1487 | if (arg == 0) | |
1488 | { | |
1489 | sal.symtab = current_source_symtab; | |
f8eba3c6 | 1490 | sal.pspace = current_program_space; |
c906108c SS |
1491 | sal.line = last_line_listed; |
1492 | sals.nelts = 1; | |
1493 | sals.sals = (struct symtab_and_line *) | |
1494 | xmalloc (sizeof (struct symtab_and_line)); | |
1495 | sals.sals[0] = sal; | |
1496 | } | |
1497 | else | |
1498 | { | |
39cf75f7 | 1499 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_LIST_MODE); |
c5aa993b | 1500 | |
c906108c SS |
1501 | dont_repeat (); |
1502 | } | |
1503 | ||
f8eba3c6 TT |
1504 | cleanups = make_cleanup (xfree, sals.sals); |
1505 | ||
c906108c | 1506 | /* C++ More than one line may have been specified, as when the user |
c378eb4e | 1507 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1508 | for (i = 0; i < sals.nelts; i++) |
1509 | { | |
1510 | sal = sals.sals[i]; | |
f8eba3c6 TT |
1511 | if (sal.pspace != current_program_space) |
1512 | continue; | |
c5aa993b | 1513 | |
c906108c SS |
1514 | if (sal.symtab == 0) |
1515 | { | |
5af949e3 UW |
1516 | struct gdbarch *gdbarch = get_current_arch (); |
1517 | ||
a3f17187 | 1518 | printf_filtered (_("No line number information available")); |
c906108c SS |
1519 | if (sal.pc != 0) |
1520 | { | |
1521 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1522 | user about a source line, at least let them have the symbolic |
1523 | address. */ | |
c906108c SS |
1524 | printf_filtered (" for address "); |
1525 | wrap_here (" "); | |
5af949e3 | 1526 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1527 | } |
1528 | else | |
1529 | printf_filtered ("."); | |
1530 | printf_filtered ("\n"); | |
1531 | } | |
1532 | else if (sal.line > 0 | |
1533 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1534 | { | |
5af949e3 UW |
1535 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1536 | ||
c906108c SS |
1537 | if (start_pc == end_pc) |
1538 | { | |
1539 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1540 | sal.line, |
1541 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1542 | wrap_here (" "); |
1543 | printf_filtered (" is at address "); | |
5af949e3 | 1544 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1545 | wrap_here (" "); |
1546 | printf_filtered (" but contains no code.\n"); | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1551 | sal.line, |
1552 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1553 | wrap_here (" "); |
1554 | printf_filtered (" starts at address "); | |
5af949e3 | 1555 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1556 | wrap_here (" "); |
1557 | printf_filtered (" and ends at "); | |
5af949e3 | 1558 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1559 | printf_filtered (".\n"); |
1560 | } | |
1561 | ||
1562 | /* x/i should display this line's code. */ | |
5af949e3 | 1563 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1564 | |
1565 | /* Repeating "info line" should do the following line. */ | |
1566 | last_line_listed = sal.line + 1; | |
1567 | ||
1568 | /* If this is the only line, show the source code. If it could | |
1569 | not find the file, don't do anything special. */ | |
1570 | if (annotation_level && sals.nelts == 1) | |
1571 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1572 | } | |
1573 | else | |
1574 | /* Is there any case in which we get here, and have an address | |
1575 | which the user would want to see? If we have debugging symbols | |
1576 | and no line numbers? */ | |
a3f17187 | 1577 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1578 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1579 | } |
f8eba3c6 | 1580 | do_cleanups (cleanups); |
c906108c SS |
1581 | } |
1582 | \f | |
1583 | /* Commands to search the source file for a regexp. */ | |
1584 | ||
c906108c | 1585 | static void |
fba45db2 | 1586 | forward_search_command (char *regex, int from_tty) |
c906108c | 1587 | { |
52f0bd74 AC |
1588 | int c; |
1589 | int desc; | |
1590 | FILE *stream; | |
c906108c SS |
1591 | int line; |
1592 | char *msg; | |
9fe4a216 | 1593 | struct cleanup *cleanups; |
c906108c | 1594 | |
c906108c | 1595 | line = last_line_listed + 1; |
c906108c SS |
1596 | |
1597 | msg = (char *) re_comp (regex); | |
1598 | if (msg) | |
8a3fe4f8 | 1599 | error (("%s"), msg); |
c906108c SS |
1600 | |
1601 | if (current_source_symtab == 0) | |
1602 | select_source_symtab (0); | |
1603 | ||
1604 | desc = open_source_file (current_source_symtab); | |
1605 | if (desc < 0) | |
05cba821 | 1606 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1607 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1608 | |
1609 | if (current_source_symtab->line_charpos == 0) | |
1610 | find_source_lines (current_source_symtab, desc); | |
1611 | ||
1612 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1613 | error (_("Expression not found")); |
c906108c SS |
1614 | |
1615 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1616 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1617 | |
9fe4a216 | 1618 | discard_cleanups (cleanups); |
c906108c SS |
1619 | stream = fdopen (desc, FDOPEN_MODE); |
1620 | clearerr (stream); | |
9fe4a216 | 1621 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1622 | while (1) |
1623 | { | |
1624 | static char *buf = NULL; | |
aa1ee363 | 1625 | char *p; |
c5aa993b JM |
1626 | int cursize, newsize; |
1627 | ||
1628 | cursize = 256; | |
1629 | buf = xmalloc (cursize); | |
1630 | p = buf; | |
1631 | ||
40aea477 | 1632 | c = fgetc (stream); |
c5aa993b JM |
1633 | if (c == EOF) |
1634 | break; | |
1635 | do | |
c906108c | 1636 | { |
c5aa993b JM |
1637 | *p++ = c; |
1638 | if (p - buf == cursize) | |
1639 | { | |
1640 | newsize = cursize + cursize / 2; | |
1641 | buf = xrealloc (buf, newsize); | |
1642 | p = buf + cursize; | |
1643 | cursize = newsize; | |
1644 | } | |
c906108c | 1645 | } |
40aea477 | 1646 | while (c != '\n' && (c = fgetc (stream)) >= 0); |
c906108c | 1647 | |
7be570e7 JM |
1648 | /* Remove the \r, if any, at the end of the line, otherwise |
1649 | regular expressions that end with $ or \n won't work. */ | |
1650 | if (p - buf > 1 && p[-2] == '\r') | |
1651 | { | |
1652 | p--; | |
1653 | p[-1] = '\n'; | |
1654 | } | |
7be570e7 | 1655 | |
c378eb4e | 1656 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1657 | *p = 0; |
1658 | if (re_exec (buf) > 0) | |
1659 | { | |
c378eb4e | 1660 | /* Match! */ |
e681b284 | 1661 | do_cleanups (cleanups); |
c5aa993b | 1662 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1663 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1664 | current_source_line = max (line - lines_to_list / 2, 1); |
1665 | return; | |
1666 | } | |
1667 | line++; | |
1668 | } | |
c906108c | 1669 | |
a3f17187 | 1670 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1671 | do_cleanups (cleanups); |
c906108c SS |
1672 | } |
1673 | ||
c906108c | 1674 | static void |
fba45db2 | 1675 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1676 | { |
52f0bd74 AC |
1677 | int c; |
1678 | int desc; | |
1679 | FILE *stream; | |
c906108c SS |
1680 | int line; |
1681 | char *msg; | |
9fe4a216 | 1682 | struct cleanup *cleanups; |
063190b6 | 1683 | |
c906108c | 1684 | line = last_line_listed - 1; |
c906108c SS |
1685 | |
1686 | msg = (char *) re_comp (regex); | |
1687 | if (msg) | |
8a3fe4f8 | 1688 | error (("%s"), msg); |
c906108c SS |
1689 | |
1690 | if (current_source_symtab == 0) | |
1691 | select_source_symtab (0); | |
1692 | ||
1693 | desc = open_source_file (current_source_symtab); | |
1694 | if (desc < 0) | |
05cba821 | 1695 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1696 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1697 | |
1698 | if (current_source_symtab->line_charpos == 0) | |
1699 | find_source_lines (current_source_symtab, desc); | |
1700 | ||
1701 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1702 | error (_("Expression not found")); |
c906108c SS |
1703 | |
1704 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1705 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1706 | |
9fe4a216 | 1707 | discard_cleanups (cleanups); |
c906108c SS |
1708 | stream = fdopen (desc, FDOPEN_MODE); |
1709 | clearerr (stream); | |
9fe4a216 | 1710 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1711 | while (line > 1) |
1712 | { | |
c378eb4e MS |
1713 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1714 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1715 | char *p = buf; |
c906108c | 1716 | |
40aea477 | 1717 | c = fgetc (stream); |
c906108c SS |
1718 | if (c == EOF) |
1719 | break; | |
c5aa993b JM |
1720 | do |
1721 | { | |
1722 | *p++ = c; | |
1723 | } | |
40aea477 | 1724 | while (c != '\n' && (c = fgetc (stream)) >= 0); |
c906108c | 1725 | |
7be570e7 JM |
1726 | /* Remove the \r, if any, at the end of the line, otherwise |
1727 | regular expressions that end with $ or \n won't work. */ | |
1728 | if (p - buf > 1 && p[-2] == '\r') | |
1729 | { | |
1730 | p--; | |
1731 | p[-1] = '\n'; | |
1732 | } | |
7be570e7 | 1733 | |
c906108c SS |
1734 | /* We now have a source line in buf; null terminate and match. */ |
1735 | *p = 0; | |
1736 | if (re_exec (buf) > 0) | |
1737 | { | |
c378eb4e | 1738 | /* Match! */ |
e681b284 | 1739 | do_cleanups (cleanups); |
c5aa993b | 1740 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1741 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1742 | current_source_line = max (line - lines_to_list / 2, 1); |
1743 | return; | |
1744 | } | |
1745 | line--; | |
1746 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1747 | { | |
05cba821 JK |
1748 | const char *filename; |
1749 | ||
e681b284 | 1750 | do_cleanups (cleanups); |
05cba821 JK |
1751 | filename = symtab_to_filename_for_display (current_source_symtab); |
1752 | perror_with_name (filename); | |
c906108c SS |
1753 | } |
1754 | } | |
1755 | ||
a3f17187 | 1756 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1757 | do_cleanups (cleanups); |
c906108c SS |
1758 | return; |
1759 | } | |
2f61ca93 JB |
1760 | |
1761 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1762 | ||
1763 | static void | |
1764 | strip_trailing_directory_separator (char *path) | |
1765 | { | |
1766 | const int last = strlen (path) - 1; | |
1767 | ||
1768 | if (last < 0) | |
1769 | return; /* No stripping is needed if PATH is the empty string. */ | |
1770 | ||
1771 | if (IS_DIR_SEPARATOR (path[last])) | |
1772 | path[last] = '\0'; | |
1773 | } | |
1774 | ||
1775 | /* Return the path substitution rule that matches FROM. | |
1776 | Return NULL if no rule matches. */ | |
1777 | ||
1778 | static struct substitute_path_rule * | |
1779 | find_substitute_path_rule (const char *from) | |
1780 | { | |
1781 | struct substitute_path_rule *rule = substitute_path_rules; | |
1782 | ||
1783 | while (rule != NULL) | |
1784 | { | |
1785 | if (FILENAME_CMP (rule->from, from) == 0) | |
1786 | return rule; | |
1787 | rule = rule->next; | |
1788 | } | |
1789 | ||
1790 | return NULL; | |
1791 | } | |
1792 | ||
1793 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1794 | The new rule will replace FROM into TO. */ | |
1795 | ||
29b0e8a2 | 1796 | void |
2f61ca93 JB |
1797 | add_substitute_path_rule (char *from, char *to) |
1798 | { | |
1799 | struct substitute_path_rule *rule; | |
1800 | struct substitute_path_rule *new_rule; | |
1801 | ||
1802 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1803 | new_rule->from = xstrdup (from); | |
1804 | new_rule->to = xstrdup (to); | |
1805 | new_rule->next = NULL; | |
1806 | ||
1807 | /* If the list of rules are empty, then insert the new rule | |
1808 | at the head of the list. */ | |
1809 | ||
1810 | if (substitute_path_rules == NULL) | |
1811 | { | |
1812 | substitute_path_rules = new_rule; | |
1813 | return; | |
1814 | } | |
1815 | ||
1816 | /* Otherwise, skip to the last rule in our list and then append | |
1817 | the new rule. */ | |
1818 | ||
1819 | rule = substitute_path_rules; | |
1820 | while (rule->next != NULL) | |
1821 | rule = rule->next; | |
1822 | ||
1823 | rule->next = new_rule; | |
1824 | } | |
1825 | ||
1826 | /* Remove the given source path substitution rule from the current list | |
1827 | of rules. The memory allocated for that rule is also deallocated. */ | |
1828 | ||
1829 | static void | |
1830 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1831 | { | |
1832 | if (rule == substitute_path_rules) | |
1833 | substitute_path_rules = rule->next; | |
1834 | else | |
1835 | { | |
1836 | struct substitute_path_rule *prev = substitute_path_rules; | |
1837 | ||
1838 | while (prev != NULL && prev->next != rule) | |
1839 | prev = prev->next; | |
1840 | ||
1841 | gdb_assert (prev != NULL); | |
1842 | ||
1843 | prev->next = rule->next; | |
1844 | } | |
1845 | ||
1846 | xfree (rule->from); | |
1847 | xfree (rule->to); | |
1848 | xfree (rule); | |
1849 | } | |
1850 | ||
1851 | /* Implement the "show substitute-path" command. */ | |
1852 | ||
1853 | static void | |
1854 | show_substitute_path_command (char *args, int from_tty) | |
1855 | { | |
1856 | struct substitute_path_rule *rule = substitute_path_rules; | |
1857 | char **argv; | |
1858 | char *from = NULL; | |
5b3fca71 | 1859 | struct cleanup *cleanup; |
2f61ca93 | 1860 | |
d1a41061 | 1861 | argv = gdb_buildargv (args); |
5b3fca71 | 1862 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
1863 | |
1864 | /* We expect zero or one argument. */ | |
1865 | ||
1866 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1867 | error (_("Too many arguments in command")); | |
1868 | ||
1869 | if (argv != NULL && argv[0] != NULL) | |
1870 | from = argv[0]; | |
1871 | ||
1872 | /* Print the substitution rules. */ | |
1873 | ||
1874 | if (from != NULL) | |
1875 | printf_filtered | |
1876 | (_("Source path substitution rule matching `%s':\n"), from); | |
1877 | else | |
1878 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1879 | ||
1880 | while (rule != NULL) | |
1881 | { | |
1882 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1883 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1884 | rule = rule->next; | |
1885 | } | |
5b3fca71 TT |
1886 | |
1887 | do_cleanups (cleanup); | |
2f61ca93 JB |
1888 | } |
1889 | ||
1890 | /* Implement the "unset substitute-path" command. */ | |
1891 | ||
1892 | static void | |
1893 | unset_substitute_path_command (char *args, int from_tty) | |
1894 | { | |
1895 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1896 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1897 | char *from = NULL; |
1898 | int rule_found = 0; | |
5b3fca71 | 1899 | struct cleanup *cleanup; |
2f61ca93 JB |
1900 | |
1901 | /* This function takes either 0 or 1 argument. */ | |
1902 | ||
5b3fca71 | 1903 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
1904 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1905 | error (_("Incorrect usage, too many arguments in command")); | |
1906 | ||
1907 | if (argv != NULL && argv[0] != NULL) | |
1908 | from = argv[0]; | |
1909 | ||
1910 | /* If the user asked for all the rules to be deleted, ask him | |
1911 | to confirm and give him a chance to abort before the action | |
1912 | is performed. */ | |
1913 | ||
1914 | if (from == NULL | |
1915 | && !query (_("Delete all source path substitution rules? "))) | |
1916 | error (_("Canceled")); | |
1917 | ||
1918 | /* Delete the rule matching the argument. No argument means that | |
1919 | all rules should be deleted. */ | |
1920 | ||
1921 | while (rule != NULL) | |
1922 | { | |
1923 | struct substitute_path_rule *next = rule->next; | |
1924 | ||
1925 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1926 | { | |
1927 | delete_substitute_path_rule (rule); | |
1928 | rule_found = 1; | |
1929 | } | |
1930 | ||
1931 | rule = next; | |
1932 | } | |
1933 | ||
1934 | /* If the user asked for a specific rule to be deleted but | |
1935 | we could not find it, then report an error. */ | |
1936 | ||
1937 | if (from != NULL && !rule_found) | |
1938 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1939 | |
1940 | forget_cached_source_info (); | |
5b3fca71 TT |
1941 | |
1942 | do_cleanups (cleanup); | |
2f61ca93 JB |
1943 | } |
1944 | ||
1945 | /* Add a new source path substitution rule. */ | |
1946 | ||
1947 | static void | |
1948 | set_substitute_path_command (char *args, int from_tty) | |
1949 | { | |
2f61ca93 JB |
1950 | char **argv; |
1951 | struct substitute_path_rule *rule; | |
5b3fca71 | 1952 | struct cleanup *cleanup; |
2f61ca93 | 1953 | |
d1a41061 | 1954 | argv = gdb_buildargv (args); |
5b3fca71 | 1955 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
1956 | |
1957 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1958 | error (_("Incorrect usage, too few arguments in command")); | |
1959 | ||
1960 | if (argv[2] != NULL) | |
1961 | error (_("Incorrect usage, too many arguments in command")); | |
1962 | ||
1963 | if (*(argv[0]) == '\0') | |
1964 | error (_("First argument must be at least one character long")); | |
1965 | ||
1966 | /* Strip any trailing directory separator character in either FROM | |
1967 | or TO. The substitution rule already implicitly contains them. */ | |
1968 | strip_trailing_directory_separator (argv[0]); | |
1969 | strip_trailing_directory_separator (argv[1]); | |
1970 | ||
1971 | /* If a rule with the same "from" was previously defined, then | |
1972 | delete it. This new rule replaces it. */ | |
1973 | ||
1974 | rule = find_substitute_path_rule (argv[0]); | |
1975 | if (rule != NULL) | |
1976 | delete_substitute_path_rule (rule); | |
1977 | ||
1978 | /* Insert the new substitution rule. */ | |
1979 | ||
1980 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1981 | forget_cached_source_info (); |
5b3fca71 TT |
1982 | |
1983 | do_cleanups (cleanup); | |
2f61ca93 JB |
1984 | } |
1985 | ||
c906108c SS |
1986 | \f |
1987 | void | |
fba45db2 | 1988 | _initialize_source (void) |
c906108c SS |
1989 | { |
1990 | struct cmd_list_element *c; | |
433759f7 | 1991 | |
c906108c SS |
1992 | current_source_symtab = 0; |
1993 | init_source_path (); | |
1994 | ||
1995 | /* The intention is to use POSIX Basic Regular Expressions. | |
1996 | Always use the GNU regex routine for consistency across all hosts. | |
1997 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1998 | just an approximation. */ | |
1999 | re_set_syntax (RE_SYNTAX_GREP); | |
2000 | ||
1a966eab AC |
2001 | c = add_cmd ("directory", class_files, directory_command, _("\ |
2002 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
2003 | Forget cached info on source file locations and line positions.\n\ |
2004 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
2005 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 2006 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
2007 | &cmdlist); |
2008 | ||
2009 | if (dbx_commands) | |
c5aa993b | 2010 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 2011 | |
5ba2abeb | 2012 | set_cmd_completer (c, filename_completer); |
c906108c | 2013 | |
99e7ae30 DE |
2014 | add_setshow_optional_filename_cmd ("directories", |
2015 | class_files, | |
2016 | &source_path, | |
2017 | _("\ | |
2018 | Set the search path for finding source files."), | |
2019 | _("\ | |
2020 | Show the search path for finding source files."), | |
2021 | _("\ | |
c906108c | 2022 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
2023 | $cdir in the path means the compilation directory of the source file.\n\ |
2024 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
2025 | appending these directories if necessary.\n\ | |
2026 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
2027 | set_directories_command, | |
2028 | show_directories_command, | |
2029 | &setlist, &showlist); | |
c906108c SS |
2030 | |
2031 | if (xdb_commands) | |
2032 | { | |
c5aa993b | 2033 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 2034 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 2035 | Current search path for finding source files.\n\ |
c906108c | 2036 | $cwd in the path means the current working directory.\n\ |
1a966eab | 2037 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 2038 | &cmdlist); |
c906108c SS |
2039 | } |
2040 | ||
2041 | add_info ("source", source_info, | |
1bedd215 | 2042 | _("Information about the current source file.")); |
c906108c | 2043 | |
1bedd215 AC |
2044 | add_info ("line", line_info, _("\ |
2045 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
2046 | Line can be specified as\n\ |
2047 | LINENUM, to list around that line in current file,\n\ | |
2048 | FILE:LINENUM, to list around that line in that file,\n\ | |
2049 | FUNCTION, to list around beginning of that function,\n\ | |
2050 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
2051 | Default is to describe the last source line that was listed.\n\n\ |
2052 | This sets the default address for \"x\" to the line's first instruction\n\ | |
2053 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 2054 | The address is also stored as the value of \"$_\".")); |
c906108c | 2055 | |
1bedd215 AC |
2056 | add_com ("forward-search", class_files, forward_search_command, _("\ |
2057 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
2058 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 2059 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 2060 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 2061 | |
1bedd215 AC |
2062 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
2063 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
2064 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 2065 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
2066 | |
2067 | if (xdb_commands) | |
2068 | { | |
c5aa993b JM |
2069 | add_com_alias ("/", "forward-search", class_files, 0); |
2070 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
2071 | } |
2072 | ||
7f7cc265 | 2073 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 2074 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
2075 | Show number of source lines gdb will list by default."), _("\ |
2076 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
2077 | the \"list\" argument explicitly specifies some other number).\n\ | |
2078 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
2079 | NULL, |
2080 | show_lines_to_list, | |
2081 | &setlist, &showlist); | |
2f61ca93 JB |
2082 | |
2083 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2084 | _("\ | |
7ef2b397 JB |
2085 | Usage: set substitute-path FROM TO\n\ |
2086 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2087 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2088 | is replaced by the new one."), | |
2089 | &setlist); | |
2f61ca93 JB |
2090 | |
2091 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2092 | _("\ | |
7ef2b397 JB |
2093 | Usage: unset substitute-path [FROM]\n\ |
2094 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2095 | is not specified, all substituting rules are deleted.\n\ | |
2096 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2097 | &unsetlist); |
2098 | ||
2099 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2100 | _("\ |
2101 | Usage: show substitute-path [FROM]\n\ | |
2102 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2103 | is not specified, print all substitution rules."), | |
2f61ca93 | 2104 | &showlist); |
1b56eb55 JK |
2105 | |
2106 | add_setshow_enum_cmd ("filename-display", class_files, | |
2107 | filename_display_kind_names, | |
2108 | &filename_display_string, _("\ | |
2109 | Set how to display filenames."), _("\ | |
2110 | Show how to display filenames."), _("\ | |
2111 | filename-display can be:\n\ | |
2112 | basename - display only basename of a filename\n\ | |
2113 | relative - display a filename relative to the compilation directory\n\ | |
2114 | absolute - display an absolute filename\n\ | |
2115 | By default, relative filenames are displayed."), | |
2116 | NULL, | |
2117 | show_filename_display_string, | |
2118 | &setlist, &showlist); | |
2119 | ||
c906108c | 2120 | } |