Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
0b302171 | 2 | Copyright (C) 1986-2005, 2007-2012 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" |
c906108c SS |
30 | |
31 | #include <sys/types.h> | |
32 | #include "gdb_string.h" | |
33 | #include "gdb_stat.h" | |
34 | #include <fcntl.h> | |
c906108c | 35 | #include "gdbcore.h" |
88987551 | 36 | #include "gdb_regex.h" |
c906108c SS |
37 | #include "symfile.h" |
38 | #include "objfiles.h" | |
39 | #include "annotate.h" | |
40 | #include "gdbtypes.h" | |
c5f0f3d0 | 41 | #include "linespec.h" |
fe4e3eb8 | 42 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 43 | #include "completer.h" |
8b93c638 | 44 | #include "ui-out.h" |
dbda9972 | 45 | #include "readline/readline.h" |
c906108c | 46 | |
ccefe4c4 TT |
47 | #include "psymtab.h" |
48 | ||
3e3a28f1 | 49 | |
c906108c SS |
50 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
51 | #define FDOPEN_MODE FOPEN_RB | |
52 | ||
c378eb4e | 53 | /* Prototypes for exported functions. */ |
c906108c | 54 | |
a14ed312 | 55 | void _initialize_source (void); |
c906108c | 56 | |
c378eb4e | 57 | /* Prototypes for local functions. */ |
c906108c | 58 | |
a14ed312 | 59 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 60 | |
a14ed312 | 61 | static void reverse_search_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void forward_search_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void line_info (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void source_info (char *, int); |
c906108c | 68 | |
c906108c SS |
69 | /* Path of directories to search for source files. |
70 | Same format as the PATH environment variable's value. */ | |
71 | ||
72 | char *source_path; | |
73 | ||
2f61ca93 JB |
74 | /* Support for source path substitution commands. */ |
75 | ||
76 | struct substitute_path_rule | |
77 | { | |
78 | char *from; | |
79 | char *to; | |
80 | struct substitute_path_rule *next; | |
81 | }; | |
82 | ||
83 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
84 | ||
c906108c SS |
85 | /* Symtab of default file for listing lines of. */ |
86 | ||
0378c332 | 87 | static struct symtab *current_source_symtab; |
c906108c SS |
88 | |
89 | /* Default next line to list. */ | |
90 | ||
0378c332 | 91 | static int current_source_line; |
c906108c | 92 | |
6c95b8df PA |
93 | static struct program_space *current_source_pspace; |
94 | ||
c906108c SS |
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. */ | |
100 | ||
101 | int lines_to_list = 10; | |
920d2a44 AC |
102 | static void |
103 | show_lines_to_list (struct ui_file *file, int from_tty, | |
104 | struct cmd_list_element *c, const char *value) | |
105 | { | |
3e43a32a MS |
106 | fprintf_filtered (file, |
107 | _("Number of source lines gdb " | |
108 | "will list by default is %s.\n"), | |
920d2a44 AC |
109 | value); |
110 | } | |
c906108c SS |
111 | |
112 | /* Line number of last line printed. Default for various commands. | |
113 | current_source_line is usually, but not always, the same as this. */ | |
114 | ||
115 | static int last_line_listed; | |
116 | ||
117 | /* First line number listed by last listing command. */ | |
118 | ||
119 | static int first_line_listed; | |
120 | ||
121 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 122 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
123 | |
124 | static struct symtab *last_source_visited = NULL; | |
125 | static int last_source_error = 0; | |
c906108c | 126 | \f |
0378c332 FN |
127 | /* Return the first line listed by print_source_lines. |
128 | Used by command interpreters to request listing from | |
c378eb4e | 129 | a previous point. */ |
0378c332 FN |
130 | |
131 | int | |
132 | get_first_line_listed (void) | |
133 | { | |
134 | return first_line_listed; | |
135 | } | |
136 | ||
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 | |
c378eb4e | 140 | as it does not automatically use this value. */ |
0378c332 FN |
141 | |
142 | int | |
143 | get_lines_to_list (void) | |
144 | { | |
145 | return lines_to_list; | |
146 | } | |
147 | ||
148 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 149 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
150 | |
151 | struct symtab_and_line | |
152 | get_current_source_symtab_and_line (void) | |
153 | { | |
245c7f48 | 154 | struct symtab_and_line cursal = { 0 }; |
0378c332 | 155 | |
6c95b8df | 156 | cursal.pspace = current_source_pspace; |
0378c332 FN |
157 | cursal.symtab = current_source_symtab; |
158 | cursal.line = current_source_line; | |
53cb0458 FN |
159 | cursal.pc = 0; |
160 | cursal.end = 0; | |
0378c332 FN |
161 | |
162 | return cursal; | |
163 | } | |
164 | ||
53cb0458 FN |
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. | |
0378c332 | 167 | It may err out if a default cannot be determined. |
53cb0458 FN |
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 | |
c378eb4e | 171 | we have without erroring out or trying to get a default. */ |
0378c332 | 172 | |
53cb0458 FN |
173 | void |
174 | set_default_source_symtab_and_line (void) | |
0378c332 | 175 | { |
0378c332 | 176 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 177 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 178 | |
c378eb4e | 179 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
180 | if (current_source_symtab == 0) |
181 | select_source_symtab (0); | |
0378c332 FN |
182 | } |
183 | ||
184 | /* Return the current default file for listing and next line to list | |
185 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 186 | and set the current default to whatever is in SAL. |
c378eb4e | 187 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
188 | |
189 | struct symtab_and_line | |
53cb0458 | 190 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 191 | { |
245c7f48 | 192 | struct symtab_and_line cursal = { 0 }; |
6c95b8df PA |
193 | |
194 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
195 | cursal.symtab = current_source_symtab; |
196 | cursal.line = current_source_line; | |
6c95b8df PA |
197 | cursal.pc = 0; |
198 | cursal.end = 0; | |
0378c332 | 199 | |
6c95b8df | 200 | current_source_pspace = sal->pspace; |
0378c332 FN |
201 | current_source_symtab = sal->symtab; |
202 | current_source_line = sal->line; | |
6c95b8df | 203 | |
0378c332 FN |
204 | return cursal; |
205 | } | |
206 | ||
c378eb4e | 207 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
208 | |
209 | void | |
210 | clear_current_source_symtab_and_line (void) | |
211 | { | |
212 | current_source_symtab = 0; | |
213 | current_source_line = 0; | |
214 | } | |
c5aa993b | 215 | |
c906108c SS |
216 | /* Set the source file default for the "list" command to be S. |
217 | ||
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. */ | |
223 | ||
224 | void | |
aa1ee363 | 225 | select_source_symtab (struct symtab *s) |
c906108c SS |
226 | { |
227 | struct symtabs_and_lines sals; | |
228 | struct symtab_and_line sal; | |
c906108c | 229 | struct objfile *ofp; |
c5aa993b | 230 | |
c906108c SS |
231 | if (s) |
232 | { | |
233 | current_source_symtab = s; | |
234 | current_source_line = 1; | |
6c95b8df | 235 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
236 | return; |
237 | } | |
238 | ||
239 | if (current_source_symtab) | |
240 | return; | |
241 | ||
242 | /* Make the default place to list be the function `main' | |
243 | if one exists. */ | |
2570f2b7 | 244 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 245 | { |
f8eba3c6 | 246 | sals = decode_line_spec (main_name (), DECODE_LINE_FUNFIRSTLINE); |
c906108c | 247 | sal = sals.sals[0]; |
b8c9b27d | 248 | xfree (sals.sals); |
6c95b8df | 249 | current_source_pspace = sal.pspace; |
c906108c SS |
250 | current_source_symtab = sal.symtab; |
251 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
252 | if (current_source_symtab) | |
c5aa993b | 253 | return; |
c906108c | 254 | } |
c5aa993b | 255 | |
8340a3fb LM |
256 | /* Alright; find the last file in the symtab list (ignoring .h's |
257 | and namespace symtabs). */ | |
c906108c SS |
258 | |
259 | current_source_line = 1; | |
260 | ||
6c95b8df | 261 | ALL_OBJFILES (ofp) |
c906108c | 262 | { |
c5aa993b | 263 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 264 | { |
591e78ff | 265 | const char *name = s->filename; |
c906108c | 266 | int len = strlen (name); |
433759f7 | 267 | |
8340a3fb LM |
268 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
269 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
270 | { |
271 | current_source_pspace = current_program_space; | |
272 | current_source_symtab = s; | |
273 | } | |
c906108c SS |
274 | } |
275 | } | |
6c95b8df | 276 | |
c906108c SS |
277 | if (current_source_symtab) |
278 | return; | |
279 | ||
6c95b8df | 280 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
281 | { |
282 | if (ofp->sf) | |
283 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
284 | if (s) | |
285 | current_source_symtab = s; | |
286 | } | |
c906108c SS |
287 | if (current_source_symtab) |
288 | return; | |
289 | ||
8a3fe4f8 | 290 | error (_("Can't find a default source file")); |
c906108c SS |
291 | } |
292 | \f | |
99e7ae30 DE |
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. */ | |
296 | ||
297 | static void | |
298 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
299 | { | |
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; | |
303 | ||
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. */ | |
308 | init_source_path (); | |
309 | if (*set_path != '\0') | |
310 | mod_path (set_path, &source_path); | |
311 | ||
312 | xfree (set_path); | |
313 | } | |
314 | ||
315 | /* Print the list of source directories. | |
316 | This is used by the "ld" command, so it has the signature of a command | |
317 | function. */ | |
318 | ||
c906108c | 319 | static void |
99e7ae30 | 320 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
321 | { |
322 | puts_filtered ("Source directories searched: "); | |
323 | puts_filtered (source_path); | |
324 | puts_filtered ("\n"); | |
325 | } | |
326 | ||
99e7ae30 DE |
327 | /* Handler for "show directories" command. */ |
328 | ||
329 | static void | |
330 | show_directories_command (struct ui_file *file, int from_tty, | |
331 | struct cmd_list_element *c, const char *value) | |
332 | { | |
333 | show_directories_1 (NULL, from_tty); | |
334 | } | |
335 | ||
00174a86 TT |
336 | /* Forget line positions and file names for the symtabs in a |
337 | particular objfile. */ | |
338 | ||
339 | void | |
340 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
341 | { | |
342 | struct symtab *s; | |
343 | ||
344 | ALL_OBJFILE_SYMTABS (objfile, s) | |
345 | { | |
346 | if (s->line_charpos != NULL) | |
347 | { | |
348 | xfree (s->line_charpos); | |
349 | s->line_charpos = NULL; | |
350 | } | |
351 | if (s->fullname != NULL) | |
352 | { | |
353 | xfree (s->fullname); | |
354 | s->fullname = NULL; | |
355 | } | |
00174a86 | 356 | } |
6f809020 DE |
357 | |
358 | if (objfile->sf) | |
359 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
360 | } |
361 | ||
c906108c SS |
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. */ | |
365 | ||
366 | void | |
fba45db2 | 367 | forget_cached_source_info (void) |
c906108c | 368 | { |
6c95b8df | 369 | struct program_space *pspace; |
52f0bd74 | 370 | struct objfile *objfile; |
c906108c | 371 | |
6c95b8df PA |
372 | ALL_PSPACES (pspace) |
373 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 374 | { |
00174a86 | 375 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 376 | } |
c4e86dd4 DJ |
377 | |
378 | last_source_visited = NULL; | |
c906108c SS |
379 | } |
380 | ||
381 | void | |
fba45db2 | 382 | init_source_path (void) |
c906108c SS |
383 | { |
384 | char buf[20]; | |
385 | ||
386 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 387 | source_path = xstrdup (buf); |
c906108c SS |
388 | forget_cached_source_info (); |
389 | } | |
390 | ||
391 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 392 | |
c906108c | 393 | void |
fba45db2 | 394 | directory_command (char *dirname, int from_tty) |
c906108c SS |
395 | { |
396 | dont_repeat (); | |
c378eb4e | 397 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
398 | if (dirname == 0) |
399 | { | |
80618b99 | 400 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 401 | { |
b8c9b27d | 402 | xfree (source_path); |
c906108c SS |
403 | init_source_path (); |
404 | } | |
405 | } | |
406 | else | |
407 | { | |
408 | mod_path (dirname, &source_path); | |
c4e86dd4 | 409 | forget_cached_source_info (); |
c906108c SS |
410 | } |
411 | if (from_tty) | |
99e7ae30 | 412 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
413 | } |
414 | ||
13d35ae5 AS |
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. */ | |
417 | ||
418 | void | |
419 | directory_switch (char *dirname, int from_tty) | |
420 | { | |
421 | add_path (dirname, &source_path, 0); | |
422 | } | |
423 | ||
c906108c SS |
424 | /* Add zero or more directories to the front of an arbitrary path. */ |
425 | ||
426 | void | |
fba45db2 | 427 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
428 | { |
429 | add_path (dirname, which_path, 1); | |
430 | } | |
431 | ||
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 | |
c378eb4e | 436 | as space or tab. */ |
c04e0a08 JJ |
437 | |
438 | void | |
439 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
440 | { |
441 | char *old = *which_path; | |
442 | int prefix = 0; | |
13d35ae5 AS |
443 | char **argv = NULL; |
444 | char *arg; | |
445 | int argv_index = 0; | |
c906108c SS |
446 | |
447 | if (dirname == 0) | |
448 | return; | |
449 | ||
13d35ae5 AS |
450 | if (parse_separators) |
451 | { | |
452 | /* This will properly parse the space and tab separators | |
c378eb4e | 453 | and any quotes that may exist. DIRNAME_SEPARATOR will |
13d35ae5 | 454 | be dealt with later. */ |
d1a41061 | 455 | argv = gdb_buildargv (dirname); |
13d35ae5 AS |
456 | make_cleanup_freeargv (argv); |
457 | ||
13d35ae5 AS |
458 | arg = argv[0]; |
459 | } | |
460 | else | |
461 | { | |
462 | arg = xstrdup (dirname); | |
463 | make_cleanup (xfree, arg); | |
464 | } | |
c906108c SS |
465 | |
466 | do | |
467 | { | |
13d35ae5 | 468 | char *name = arg; |
aa1ee363 | 469 | char *p; |
c906108c SS |
470 | struct stat st; |
471 | ||
472 | { | |
c04e0a08 | 473 | char *separator = NULL; |
c04e0a08 | 474 | |
13d35ae5 AS |
475 | /* Spaces and tabs will have been removed by buildargv(). |
476 | The directories will there be split into a list but | |
477 | each entry may still contain DIRNAME_SEPARATOR. */ | |
c04e0a08 | 478 | if (parse_separators) |
13d35ae5 | 479 | separator = strchr (name, DIRNAME_SEPARATOR); |
c906108c | 480 | |
13d35ae5 AS |
481 | if (separator == 0) |
482 | p = arg = name + strlen (name); | |
c906108c SS |
483 | else |
484 | { | |
13d35ae5 AS |
485 | p = separator; |
486 | arg = p + 1; | |
487 | while (*arg == DIRNAME_SEPARATOR) | |
488 | ++arg; | |
c906108c | 489 | } |
13d35ae5 AS |
490 | |
491 | /* If there are no more directories in this argument then start | |
492 | on the next argument next time round the loop (if any). */ | |
493 | if (*arg == '\0') | |
494 | arg = parse_separators ? argv[++argv_index] : NULL; | |
c906108c SS |
495 | } |
496 | ||
13d35ae5 AS |
497 | /* name is the start of the directory. |
498 | p is the separator (or null) following the end. */ | |
499 | ||
500 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 501 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 502 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 503 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 504 | #endif |
13d35ae5 | 505 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 506 | /* Sigh. "foo/" => "foo" */ |
c906108c | 507 | --p; |
c906108c SS |
508 | *p = '\0'; |
509 | ||
7be570e7 | 510 | while (p > name && p[-1] == '.') |
c906108c SS |
511 | { |
512 | if (p - name == 1) | |
513 | { | |
514 | /* "." => getwd (). */ | |
515 | name = current_directory; | |
516 | goto append; | |
517 | } | |
fe4e3eb8 | 518 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
519 | { |
520 | if (p - name == 2) | |
521 | { | |
522 | /* "/." => "/". */ | |
523 | *--p = '\0'; | |
524 | goto append; | |
525 | } | |
526 | else | |
527 | { | |
528 | /* "...foo/." => "...foo". */ | |
529 | p -= 2; | |
530 | *p = '\0'; | |
531 | continue; | |
532 | } | |
533 | } | |
534 | else | |
535 | break; | |
536 | } | |
537 | ||
538 | if (name[0] == '~') | |
539 | name = tilde_expand (name); | |
c3690141 | 540 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 541 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 542 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 543 | #endif |
fe4e3eb8 | 544 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 545 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
546 | else |
547 | name = savestring (name, p - name); | |
b8c9b27d | 548 | make_cleanup (xfree, name); |
c906108c SS |
549 | |
550 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
551 | if (name[0] != '$') |
552 | { | |
553 | /* These are warnings, not errors, since we don't want a | |
554 | non-existent directory in a .gdbinit file to stop processing | |
555 | of the .gdbinit file. | |
556 | ||
557 | Whether they get added to the path is more debatable. Current | |
558 | answer is yes, in case the user wants to go make the directory | |
559 | or whatever. If the directory continues to not exist/not be | |
560 | a directory/etc, then having them in the path should be | |
561 | harmless. */ | |
562 | if (stat (name, &st) < 0) | |
563 | { | |
564 | int save_errno = errno; | |
433759f7 | 565 | |
c5aa993b JM |
566 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
567 | print_sys_errmsg (name, save_errno); | |
568 | } | |
569 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 570 | warning (_("%s is not a directory."), name); |
c5aa993b | 571 | } |
c906108c SS |
572 | |
573 | append: | |
574 | { | |
aa1ee363 | 575 | unsigned int len = strlen (name); |
c906108c SS |
576 | |
577 | p = *which_path; | |
578 | while (1) | |
579 | { | |
0ba1096a KT |
580 | /* FIXME: we should use realpath() or its work-alike |
581 | before comparing. Then all the code above which | |
7be570e7 | 582 | removes excess slashes and dots could simply go away. */ |
0ba1096a | 583 | if (!filename_ncmp (p, name, len) |
c906108c SS |
584 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) |
585 | { | |
c378eb4e | 586 | /* Found it in the search path, remove old copy. */ |
c906108c | 587 | if (p > *which_path) |
c378eb4e | 588 | p--; /* Back over leading separator. */ |
c906108c | 589 | if (prefix > p - *which_path) |
c378eb4e | 590 | goto skip_dup; /* Same dir twice in one cmd. */ |
c5aa993b | 591 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
592 | } |
593 | p = strchr (p, DIRNAME_SEPARATOR); | |
594 | if (p != 0) | |
595 | ++p; | |
596 | else | |
597 | break; | |
598 | } | |
599 | if (p == 0) | |
600 | { | |
601 | char tinybuf[2]; | |
602 | ||
603 | tinybuf[0] = DIRNAME_SEPARATOR; | |
604 | tinybuf[1] = '\0'; | |
605 | ||
3e43a32a MS |
606 | /* If we have already tacked on a name(s) in this command, |
607 | be sure they stay on the front as we tack on some | |
608 | more. */ | |
c906108c SS |
609 | if (prefix) |
610 | { | |
611 | char *temp, c; | |
612 | ||
613 | c = old[prefix]; | |
614 | old[prefix] = '\0'; | |
1754f103 | 615 | temp = concat (old, tinybuf, name, (char *)NULL); |
c906108c | 616 | old[prefix] = c; |
3e43a32a | 617 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); |
c906108c | 618 | prefix = strlen (temp); |
b8c9b27d | 619 | xfree (temp); |
c906108c SS |
620 | } |
621 | else | |
622 | { | |
1754f103 MK |
623 | *which_path = concat (name, (old[0] ? tinybuf : old), |
624 | old, (char *)NULL); | |
c906108c SS |
625 | prefix = strlen (name); |
626 | } | |
b8c9b27d | 627 | xfree (old); |
c906108c SS |
628 | old = *which_path; |
629 | } | |
630 | } | |
82ae4854 | 631 | skip_dup: |
b27cf2b3 | 632 | ; |
c5aa993b | 633 | } |
13d35ae5 | 634 | while (arg != NULL); |
c906108c SS |
635 | } |
636 | ||
637 | ||
638 | static void | |
fba45db2 | 639 | source_info (char *ignore, int from_tty) |
c906108c | 640 | { |
52f0bd74 | 641 | struct symtab *s = current_source_symtab; |
c906108c SS |
642 | |
643 | if (!s) | |
644 | { | |
a3f17187 | 645 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
646 | return; |
647 | } | |
a3f17187 | 648 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 649 | if (s->dirname) |
a3f17187 | 650 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 651 | if (s->fullname) |
a3f17187 | 652 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 653 | if (s->nlines) |
a3f17187 | 654 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
655 | s->nlines == 1 ? "" : "s"); |
656 | ||
a3f17187 AC |
657 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
658 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
659 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 660 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 661 | } |
c5aa993b | 662 | \f |
c906108c | 663 | |
c378eb4e | 664 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
665 | static int |
666 | is_regular_file (const char *name) | |
667 | { | |
668 | struct stat st; | |
669 | const int status = stat (name, &st); | |
670 | ||
671 | /* Stat should never fail except when the file does not exist. | |
672 | If stat fails, analyze the source of error and return True | |
673 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
674 | on obscure systems where stat does not work as expected. */ |
675 | ||
1da1a192 JB |
676 | if (status != 0) |
677 | return (errno != ENOENT); | |
678 | ||
679 | return S_ISREG (st.st_mode); | |
680 | } | |
c906108c | 681 | |
c906108c | 682 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
683 | using mode MODE in the calls to open. You cannot use this function to |
684 | create files (O_CREAT). | |
c906108c | 685 | |
014d698b EZ |
686 | OPTS specifies the function behaviour in specific cases. |
687 | ||
688 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
689 | (ie pretend the first element of PATH is "."). This also indicates |
690 | that a slash in STRING disables searching of the path (this is | |
691 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
692 | get that particular version of foo or an error message). | |
693 | ||
014d698b EZ |
694 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
695 | searched in path (we usually want this for source files but not for | |
696 | executables). | |
697 | ||
e7a8479f | 698 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 699 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
700 | have to take special pains to avoid doubling the "/" between the directory |
701 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
702 | source file name!!! | |
703 | ||
704 | If a file is found, return the descriptor. | |
705 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
706 | ||
707 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 708 | >>>> eg executable, non-directory. */ |
c906108c | 709 | int |
014d698b | 710 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 711 | int mode, char **filename_opened) |
c906108c | 712 | { |
52f0bd74 AC |
713 | int fd; |
714 | char *filename; | |
1f8cc6db AC |
715 | const char *p; |
716 | const char *p1; | |
52f0bd74 | 717 | int len; |
c906108c SS |
718 | int alloclen; |
719 | ||
fbdebf46 JK |
720 | /* The open syscall MODE parameter is not specified. */ |
721 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
722 | gdb_assert (string != NULL); |
723 | ||
724 | /* A file with an empty name cannot possibly exist. Report a failure | |
725 | without further checking. | |
726 | ||
727 | This is an optimization which also defends us against buggy | |
728 | implementations of the "stat" function. For instance, we have | |
729 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
730 | when the debugger is started with an empty argument. */ | |
731 | if (string[0] == '\0') | |
732 | { | |
733 | errno = ENOENT; | |
734 | return -1; | |
735 | } | |
fbdebf46 | 736 | |
c906108c SS |
737 | if (!path) |
738 | path = "."; | |
739 | ||
c906108c | 740 | mode |= O_BINARY; |
c906108c | 741 | |
014d698b | 742 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
743 | { |
744 | int i; | |
072b1022 DJ |
745 | |
746 | if (is_regular_file (string)) | |
747 | { | |
748 | filename = alloca (strlen (string) + 1); | |
749 | strcpy (filename, string); | |
fbdebf46 | 750 | fd = open (filename, mode); |
072b1022 DJ |
751 | if (fd >= 0) |
752 | goto done; | |
753 | } | |
754 | else | |
3f565f1e DJ |
755 | { |
756 | filename = NULL; | |
757 | fd = -1; | |
758 | } | |
072b1022 | 759 | |
014d698b EZ |
760 | if (!(opts & OPF_SEARCH_IN_PATH)) |
761 | for (i = 0; string[i]; i++) | |
762 | if (IS_DIR_SEPARATOR (string[i])) | |
763 | goto done; | |
c906108c SS |
764 | } |
765 | ||
e6d9b9c2 DE |
766 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
767 | if (HAS_DRIVE_SPEC (string)) | |
768 | string = STRIP_DRIVE_SPEC (string); | |
769 | ||
c378eb4e | 770 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
771 | while (IS_DIR_SEPARATOR(string[0])) |
772 | string++; | |
773 | ||
c906108c | 774 | /* ./foo => foo */ |
fe4e3eb8 | 775 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
776 | string += 2; |
777 | ||
778 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 779 | filename = alloca (alloclen); |
c906108c SS |
780 | fd = -1; |
781 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
782 | { | |
1f8cc6db | 783 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
784 | if (p1) |
785 | len = p1 - p; | |
786 | else | |
787 | len = strlen (p); | |
788 | ||
789 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
790 | && p[2] == 'w' && p[3] == 'd') |
791 | { | |
792 | /* Name is $cwd -- insert current directory name instead. */ | |
793 | int newlen; | |
794 | ||
c378eb4e | 795 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
796 | len = strlen (current_directory); |
797 | newlen = len + strlen (string) + 2; | |
798 | if (newlen > alloclen) | |
799 | { | |
800 | alloclen = newlen; | |
1f8cc6db | 801 | filename = alloca (alloclen); |
c5aa993b JM |
802 | } |
803 | strcpy (filename, current_directory); | |
804 | } | |
805 | else | |
806 | { | |
807 | /* Normal file name in path -- just use it. */ | |
808 | strncpy (filename, p, len); | |
809 | filename[len] = 0; | |
08001717 DE |
810 | |
811 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
812 | don't have enough information to expand it. The user *could* | |
813 | have an actual directory named '$cdir' but handling that would | |
814 | be confusing, it would mean different things in different | |
815 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
816 | We can get $cdir when loading scripts. When loading source files | |
817 | $cdir must have already been expanded to the correct value. */ | |
818 | if (strcmp (filename, "$cdir") == 0) | |
819 | continue; | |
c906108c | 820 | } |
c906108c | 821 | |
c378eb4e | 822 | /* Remove trailing slashes. */ |
fe4e3eb8 | 823 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
824 | filename[--len] = 0; |
825 | ||
c5aa993b | 826 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
827 | strcat (filename, string); |
828 | ||
1da1a192 | 829 | if (is_regular_file (filename)) |
5e987968 AS |
830 | { |
831 | fd = open (filename, mode); | |
832 | if (fd >= 0) | |
833 | break; | |
834 | } | |
c906108c SS |
835 | } |
836 | ||
c5aa993b | 837 | done: |
c906108c SS |
838 | if (filename_opened) |
839 | { | |
c378eb4e | 840 | /* If a file was opened, canonicalize its filename. Use xfullpath |
a89f66e4 | 841 | rather than gdb_realpath to avoid resolving the basename part |
c378eb4e | 842 | of filenames when the associated file is a symbolic link. This |
a89f66e4 JB |
843 | fixes a potential inconsistency between the filenames known to |
844 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 845 | if (fd < 0) |
1f8cc6db | 846 | *filename_opened = NULL; |
fe4e3eb8 | 847 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 848 | *filename_opened = xfullpath (filename); |
c906108c SS |
849 | else |
850 | { | |
c378eb4e | 851 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ |
c5aa993b | 852 | |
58d370e0 | 853 | char *f = concat (current_directory, |
5e987968 AS |
854 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
855 | ? "" : SLASH_STRING, | |
1754f103 | 856 | filename, (char *)NULL); |
433759f7 | 857 | |
a89f66e4 | 858 | *filename_opened = xfullpath (f); |
58d370e0 | 859 | xfree (f); |
c5aa993b | 860 | } |
c906108c | 861 | } |
c906108c SS |
862 | |
863 | return fd; | |
864 | } | |
865 | ||
c5aa993b | 866 | |
c906108c SS |
867 | /* This is essentially a convenience, for clients that want the behaviour |
868 | of openp, using source_path, but that really don't want the file to be | |
869 | opened but want instead just to know what the full pathname is (as | |
870 | qualified against source_path). | |
871 | ||
872 | The current working directory is searched first. | |
873 | ||
874 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
875 | set to the fully-qualified pathname. | |
876 | ||
5e987968 | 877 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 878 | int |
24f81874 | 879 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 880 | { |
c5aa993b | 881 | int fd; |
c906108c | 882 | |
014d698b | 883 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 884 | O_RDONLY, full_pathname); |
c906108c SS |
885 | if (fd < 0) |
886 | { | |
887 | *full_pathname = NULL; | |
888 | return 0; | |
889 | } | |
890 | ||
891 | close (fd); | |
892 | return 1; | |
893 | } | |
894 | ||
2f61ca93 JB |
895 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
896 | applied to PATH. */ | |
897 | ||
898 | static int | |
899 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
900 | const char *path) | |
901 | { | |
902 | const int from_len = strlen (rule->from); | |
903 | const int path_len = strlen (path); | |
904 | char *path_start; | |
905 | ||
906 | if (path_len < from_len) | |
907 | return 0; | |
908 | ||
909 | /* The substitution rules are anchored at the start of the path, | |
910 | so the path should start with rule->from. There is no filename | |
911 | comparison routine, so we need to extract the first FROM_LEN | |
912 | characters from PATH first and use that to do the comparison. */ | |
913 | ||
914 | path_start = alloca (from_len + 1); | |
915 | strncpy (path_start, path, from_len); | |
916 | path_start[from_len] = '\0'; | |
917 | ||
918 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
919 | return 0; | |
920 | ||
921 | /* Make sure that the region in the path that matches the substitution | |
922 | rule is immediately followed by a directory separator (or the end of | |
923 | string character). */ | |
924 | ||
925 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
926 | return 0; | |
927 | ||
928 | return 1; | |
929 | } | |
930 | ||
931 | /* Find the substitute-path rule that applies to PATH and return it. | |
932 | Return NULL if no rule applies. */ | |
933 | ||
934 | static struct substitute_path_rule * | |
935 | get_substitute_path_rule (const char *path) | |
936 | { | |
937 | struct substitute_path_rule *rule = substitute_path_rules; | |
938 | ||
939 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
940 | rule = rule->next; | |
941 | ||
942 | return rule; | |
943 | } | |
944 | ||
945 | /* If the user specified a source path substitution rule that applies | |
946 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 947 | be deallocated afterwards. |
2f61ca93 JB |
948 | |
949 | Return NULL if no substitution rule was specified by the user, | |
950 | or if no rule applied to the given PATH. */ | |
951 | ||
952 | static char * | |
953 | rewrite_source_path (const char *path) | |
954 | { | |
955 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
956 | char *new_path; | |
957 | int from_len; | |
958 | ||
959 | if (rule == NULL) | |
960 | return NULL; | |
961 | ||
962 | from_len = strlen (rule->from); | |
963 | ||
964 | /* Compute the rewritten path and return it. */ | |
965 | ||
966 | new_path = | |
967 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
968 | strcpy (new_path, rule->to); | |
969 | strcat (new_path, path + from_len); | |
970 | ||
971 | return new_path; | |
972 | } | |
973 | ||
57c22c6c | 974 | /* This function is capable of finding the absolute path to a |
c378eb4e MS |
975 | source file, and opening it, provided you give it a FILENAME. Both the |
976 | DIRNAME and FULLNAME are only added suggestions on where to find the file. | |
57c22c6c | 977 | |
57c22c6c BR |
978 | FILENAME should be the filename to open. |
979 | DIRNAME is the compilation directory of a particular source file. | |
980 | Only some debug formats provide this info. | |
981 | FULLNAME can be the last known absolute path to the file in question. | |
86991504 DE |
982 | Space for the path must have been malloc'd. If a path substitution |
983 | is applied we free the old value and set a new one. | |
57c22c6c BR |
984 | |
985 | On Success | |
c378eb4e | 986 | A valid file descriptor is returned (the return value is positive). |
57c22c6c | 987 | FULLNAME is set to the absolute path to the file just opened. |
86991504 | 988 | The caller is responsible for freeing FULLNAME. |
57c22c6c BR |
989 | |
990 | On Failure | |
c378eb4e | 991 | An invalid file descriptor is returned (the return value is negative). |
57c22c6c | 992 | FULLNAME is set to NULL. */ |
86991504 | 993 | |
ccefe4c4 | 994 | int |
e2357892 | 995 | find_and_open_source (const char *filename, |
5e987968 AS |
996 | const char *dirname, |
997 | char **fullname) | |
c906108c SS |
998 | { |
999 | char *path = source_path; | |
31889e00 | 1000 | const char *p; |
c906108c | 1001 | int result; |
c906108c | 1002 | |
c378eb4e | 1003 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1004 | |
57c22c6c | 1005 | if (*fullname) |
c906108c | 1006 | { |
2f61ca93 JB |
1007 | /* The user may have requested that source paths be rewritten |
1008 | according to substitution rules he provided. If a substitution | |
1009 | rule applies to this path, then apply it. */ | |
1010 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
1011 | ||
1012 | if (rewritten_fullname != NULL) | |
1013 | { | |
1014 | xfree (*fullname); | |
1015 | *fullname = rewritten_fullname; | |
1016 | } | |
1017 | ||
57c22c6c | 1018 | result = open (*fullname, OPEN_MODE); |
c906108c | 1019 | if (result >= 0) |
c5aa993b | 1020 | return result; |
c378eb4e | 1021 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1022 | xfree (*fullname); |
57c22c6c | 1023 | *fullname = NULL; |
c906108c SS |
1024 | } |
1025 | ||
57c22c6c | 1026 | if (dirname != NULL) |
c906108c | 1027 | { |
2f61ca93 JB |
1028 | /* If necessary, rewrite the compilation directory name according |
1029 | to the source path substitution rules specified by the user. */ | |
1030 | ||
1031 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1032 | ||
1033 | if (rewritten_dirname != NULL) | |
1034 | { | |
1035 | make_cleanup (xfree, rewritten_dirname); | |
1036 | dirname = rewritten_dirname; | |
1037 | } | |
1038 | ||
c378eb4e MS |
1039 | /* Replace a path entry of $cdir with the compilation directory |
1040 | name. */ | |
c906108c SS |
1041 | #define cdir_len 5 |
1042 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1043 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1044 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1045 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1046 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1047 | { |
1048 | int len; | |
1049 | ||
1050 | path = (char *) | |
57c22c6c | 1051 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1052 | len = p - source_path; |
c5aa993b | 1053 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1054 | strcpy (path + len, dirname); /* new stuff */ |
1055 | strcat (path + len, source_path + len + cdir_len); /* After | |
1056 | $cdir */ | |
c906108c SS |
1057 | } |
1058 | } | |
8da2a1df DJ |
1059 | |
1060 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1061 | { |
8da2a1df DJ |
1062 | /* If filename is absolute path, try the source path |
1063 | substitution on it. */ | |
56163ce1 JB |
1064 | char *rewritten_filename = rewrite_source_path (filename); |
1065 | ||
1066 | if (rewritten_filename != NULL) | |
1067 | { | |
1068 | make_cleanup (xfree, rewritten_filename); | |
1069 | filename = rewritten_filename; | |
1070 | } | |
1071 | } | |
c906108c | 1072 | |
fbdebf46 | 1073 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1074 | if (result < 0) |
1075 | { | |
c378eb4e | 1076 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1077 | p = lbasename (filename); |
1078 | if (p != filename) | |
fbdebf46 | 1079 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1080 | } |
c906108c | 1081 | |
c906108c SS |
1082 | return result; |
1083 | } | |
1084 | ||
57c22c6c BR |
1085 | /* Open a source file given a symtab S. Returns a file descriptor or |
1086 | negative number for error. | |
1087 | ||
c378eb4e | 1088 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1089 | |
1090 | int | |
1091 | open_source_file (struct symtab *s) | |
1092 | { | |
5e987968 AS |
1093 | if (!s) |
1094 | return -1; | |
57c22c6c | 1095 | |
e2357892 | 1096 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1097 | } |
1098 | ||
1099 | /* Finds the fullname that a symtab represents. | |
c906108c | 1100 | |
f132ba9d | 1101 | If this functions finds the fullname, it will save it in s->fullname |
57c22c6c BR |
1102 | and it will also return the value. |
1103 | ||
1104 | If this function fails to find the file that this symtab represents, | |
f132ba9d | 1105 | NULL will be returned and s->fullname will be set to NULL. */ |
256f06f3 | 1106 | |
c906108c | 1107 | char * |
57c22c6c | 1108 | symtab_to_fullname (struct symtab *s) |
c906108c | 1109 | { |
57c22c6c | 1110 | int r; |
c906108c SS |
1111 | |
1112 | if (!s) | |
1113 | return NULL; | |
1114 | ||
256f06f3 DE |
1115 | /* Use cached copy if we have it. |
1116 | We rely on forget_cached_source_info being called appropriately | |
1117 | to handle cases like the file being moved. */ | |
1118 | if (s->fullname) | |
1119 | return s->fullname; | |
1120 | ||
e2357892 | 1121 | r = find_and_open_source (s->filename, s->dirname, &s->fullname); |
c906108c | 1122 | |
9fe4a216 | 1123 | if (r >= 0) |
5e987968 AS |
1124 | { |
1125 | close (r); | |
1126 | return s->fullname; | |
1127 | } | |
c906108c | 1128 | |
57c22c6c BR |
1129 | return NULL; |
1130 | } | |
5e987968 | 1131 | \f |
c906108c SS |
1132 | /* Create and initialize the table S->line_charpos that records |
1133 | the positions of the lines in the source file, which is assumed | |
1134 | to be open on descriptor DESC. | |
1135 | All set S->nlines to the number of such lines. */ | |
1136 | ||
1137 | void | |
fba45db2 | 1138 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1139 | { |
1140 | struct stat st; | |
52f0bd74 | 1141 | char *data, *p, *end; |
c906108c SS |
1142 | int nlines = 0; |
1143 | int lines_allocated = 1000; | |
1144 | int *line_charpos; | |
1145 | long mtime = 0; | |
1146 | int size; | |
1147 | ||
be8ca11b | 1148 | gdb_assert (s); |
7936743b | 1149 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1150 | if (fstat (desc, &st) < 0) |
1151 | perror_with_name (s->filename); | |
1152 | ||
be8ca11b | 1153 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1154 | mtime = s->objfile->mtime; |
c906108c | 1155 | else if (exec_bfd) |
c04ea773 | 1156 | mtime = exec_bfd_mtime; |
c906108c SS |
1157 | |
1158 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1159 | warning (_("Source file is more recent than executable.")); |
c906108c | 1160 | |
c906108c SS |
1161 | { |
1162 | struct cleanup *old_cleanups; | |
1163 | ||
1164 | /* st_size might be a large type, but we only support source files whose | |
1165 | size fits in an int. */ | |
1166 | size = (int) st.st_size; | |
1167 | ||
1168 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1169 | run into various kinds of limits on stack size. */ | |
1170 | data = (char *) xmalloc (size); | |
b8c9b27d | 1171 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1172 | |
1173 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1174 | size = myread (desc, data, size); | |
1175 | if (size < 0) | |
1176 | perror_with_name (s->filename); | |
1177 | end = data + size; | |
1178 | p = data; | |
1179 | line_charpos[0] = 0; | |
1180 | nlines = 1; | |
1181 | while (p != end) | |
1182 | { | |
1183 | if (*p++ == '\n' | |
c5aa993b | 1184 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1185 | && p != end) |
1186 | { | |
1187 | if (nlines == lines_allocated) | |
1188 | { | |
1189 | lines_allocated *= 2; | |
1190 | line_charpos = | |
0efffb96 AC |
1191 | (int *) xrealloc ((char *) line_charpos, |
1192 | sizeof (int) * lines_allocated); | |
c906108c SS |
1193 | } |
1194 | line_charpos[nlines++] = p - data; | |
1195 | } | |
1196 | } | |
1197 | do_cleanups (old_cleanups); | |
1198 | } | |
d4d4db8a | 1199 | |
c906108c SS |
1200 | s->nlines = nlines; |
1201 | s->line_charpos = | |
0efffb96 | 1202 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1203 | |
1204 | } | |
1205 | ||
c906108c | 1206 | \f |
c5aa993b | 1207 | |
c906108c SS |
1208 | /* Get full pathname and line number positions for a symtab. |
1209 | Return nonzero if line numbers may have changed. | |
1210 | Set *FULLNAME to actual name of the file as found by `openp', | |
1211 | or to 0 if the file is not found. */ | |
1212 | ||
1213 | static int | |
fba45db2 | 1214 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1215 | { |
52f0bd74 | 1216 | int desc, linenums_changed = 0; |
9fe4a216 | 1217 | struct cleanup *cleanups; |
c5aa993b | 1218 | |
c906108c SS |
1219 | desc = open_source_file (s); |
1220 | if (desc < 0) | |
1221 | { | |
1222 | if (fullname) | |
1223 | *fullname = NULL; | |
1224 | return 0; | |
c5aa993b | 1225 | } |
9fe4a216 | 1226 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1227 | if (fullname) |
1228 | *fullname = s->fullname; | |
c5aa993b JM |
1229 | if (s->line_charpos == 0) |
1230 | linenums_changed = 1; | |
1231 | if (linenums_changed) | |
1232 | find_source_lines (s, desc); | |
9fe4a216 | 1233 | do_cleanups (cleanups); |
c906108c SS |
1234 | return linenums_changed; |
1235 | } | |
1236 | ||
1237 | /* Print text describing the full name of the source file S | |
1238 | and the line number LINE and its corresponding character position. | |
1239 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1240 | can easily find it. | |
1241 | ||
1242 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1243 | ||
1244 | Return 1 if successful, 0 if could not find the file. */ | |
1245 | ||
1246 | int | |
fba45db2 KB |
1247 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1248 | CORE_ADDR pc) | |
c906108c SS |
1249 | { |
1250 | if (s->line_charpos == 0) | |
c5aa993b | 1251 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1252 | if (s->fullname == 0) |
1253 | return 0; | |
1254 | if (line > s->nlines) | |
1255 | /* Don't index off the end of the line_charpos array. */ | |
1256 | return 0; | |
1257 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1258 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1259 | |
1260 | current_source_line = line; | |
1261 | first_line_listed = line; | |
1262 | last_line_listed = line; | |
1263 | current_source_symtab = s; | |
1264 | return 1; | |
1265 | } | |
c906108c | 1266 | \f |
c5aa993b | 1267 | |
c906108c | 1268 | /* Print source lines from the file of symtab S, |
c378eb4e | 1269 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c | 1270 | |
a14ed312 KB |
1271 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1272 | int noerror); | |
c906108c | 1273 | static void |
fba45db2 | 1274 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1275 | { |
52f0bd74 AC |
1276 | int c; |
1277 | int desc; | |
f4dfd9c0 | 1278 | int noprint = 0; |
52f0bd74 | 1279 | FILE *stream; |
c906108c | 1280 | int nlines = stopline - line; |
7c8a8b04 | 1281 | struct cleanup *cleanup; |
79a45e25 | 1282 | struct ui_out *uiout = current_uiout; |
c906108c | 1283 | |
c378eb4e | 1284 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1285 | current_source_symtab = s; |
1286 | current_source_line = line; | |
1287 | first_line_listed = line; | |
1288 | ||
3e43a32a | 1289 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1290 | number. */ |
8b93c638 JM |
1291 | if (ui_out_test_flags (uiout, ui_source_list)) |
1292 | { | |
c378eb4e | 1293 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1294 | if ((s != last_source_visited) || (!last_source_error)) |
1295 | { | |
1296 | last_source_visited = s; | |
1297 | desc = open_source_file (s); | |
1298 | } | |
1299 | else | |
1300 | { | |
1301 | desc = last_source_error; | |
1302 | noerror = 1; | |
1303 | } | |
8b93c638 JM |
1304 | } |
1305 | else | |
1306 | { | |
f4dfd9c0 | 1307 | desc = last_source_error; |
8b93c638 | 1308 | noerror = 1; |
f4dfd9c0 | 1309 | noprint = 1; |
8b93c638 | 1310 | } |
c906108c | 1311 | |
f4dfd9c0 | 1312 | if (desc < 0 || noprint) |
c906108c SS |
1313 | { |
1314 | last_source_error = desc; | |
1315 | ||
c5aa993b JM |
1316 | if (!noerror) |
1317 | { | |
c906108c SS |
1318 | char *name = alloca (strlen (s->filename) + 100); |
1319 | sprintf (name, "%d\t%s", line, s->filename); | |
1320 | print_sys_errmsg (name, errno); | |
1321 | } | |
1322 | else | |
fc0ae648 AB |
1323 | { |
1324 | ui_out_field_int (uiout, "line", line); | |
1325 | ui_out_text (uiout, "\tin "); | |
1326 | ui_out_field_string (uiout, "file", s->filename); | |
1327 | ui_out_text (uiout, "\n"); | |
1328 | } | |
c906108c SS |
1329 | |
1330 | return; | |
1331 | } | |
1332 | ||
1333 | last_source_error = 0; | |
1334 | ||
1335 | if (s->line_charpos == 0) | |
1336 | find_source_lines (s, desc); | |
1337 | ||
1338 | if (line < 1 || line > s->nlines) | |
1339 | { | |
1340 | close (desc); | |
8a3fe4f8 | 1341 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1342 | line, s->filename, s->nlines); |
1343 | } | |
1344 | ||
1345 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1346 | { | |
1347 | close (desc); | |
1348 | perror_with_name (s->filename); | |
1349 | } | |
1350 | ||
1351 | stream = fdopen (desc, FDOPEN_MODE); | |
1352 | clearerr (stream); | |
7c8a8b04 | 1353 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1354 | |
1355 | while (nlines-- > 0) | |
1356 | { | |
8b93c638 JM |
1357 | char buf[20]; |
1358 | ||
1359 | c = fgetc (stream); | |
1360 | if (c == EOF) | |
1361 | break; | |
1362 | last_line_listed = current_source_line; | |
1363 | sprintf (buf, "%d\t", current_source_line++); | |
1364 | ui_out_text (uiout, buf); | |
1365 | do | |
1366 | { | |
1367 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1368 | { | |
1369 | sprintf (buf, "^%c", c + 0100); | |
1370 | ui_out_text (uiout, buf); | |
1371 | } | |
1372 | else if (c == 0177) | |
1373 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1374 | else if (c == '\r') |
1375 | { | |
1376 | /* Skip a \r character, but only before a \n. */ | |
1377 | int c1 = fgetc (stream); | |
1378 | ||
1379 | if (c1 != '\n') | |
1380 | printf_filtered ("^%c", c + 0100); | |
1381 | if (c1 != EOF) | |
1382 | ungetc (c1, stream); | |
1383 | } | |
8b93c638 JM |
1384 | else |
1385 | { | |
1386 | sprintf (buf, "%c", c); | |
1387 | ui_out_text (uiout, buf); | |
1388 | } | |
1389 | } | |
1390 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1391 | } |
1392 | ||
7c8a8b04 | 1393 | do_cleanups (cleanup); |
c906108c SS |
1394 | } |
1395 | \f | |
1396 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1397 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1398 | not the command line version, then the source is shown in the source |
c378eb4e | 1399 | window otherwise it is simply printed. */ |
c906108c | 1400 | |
c5aa993b | 1401 | void |
fba45db2 | 1402 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1403 | { |
c5aa993b | 1404 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1405 | } |
1406 | \f | |
c906108c SS |
1407 | /* Print info on range of pc's in a specified line. */ |
1408 | ||
1409 | static void | |
fba45db2 | 1410 | line_info (char *arg, int from_tty) |
c906108c SS |
1411 | { |
1412 | struct symtabs_and_lines sals; | |
1413 | struct symtab_and_line sal; | |
1414 | CORE_ADDR start_pc, end_pc; | |
1415 | int i; | |
f8eba3c6 | 1416 | struct cleanup *cleanups; |
c906108c | 1417 | |
fe39c653 | 1418 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1419 | |
1420 | if (arg == 0) | |
1421 | { | |
1422 | sal.symtab = current_source_symtab; | |
f8eba3c6 | 1423 | sal.pspace = current_program_space; |
c906108c SS |
1424 | sal.line = last_line_listed; |
1425 | sals.nelts = 1; | |
1426 | sals.sals = (struct symtab_and_line *) | |
1427 | xmalloc (sizeof (struct symtab_and_line)); | |
1428 | sals.sals[0] = sal; | |
1429 | } | |
1430 | else | |
1431 | { | |
f8eba3c6 | 1432 | sals = decode_line_spec_1 (arg, DECODE_LINE_LIST_MODE); |
c5aa993b | 1433 | |
c906108c SS |
1434 | dont_repeat (); |
1435 | } | |
1436 | ||
f8eba3c6 TT |
1437 | cleanups = make_cleanup (xfree, sals.sals); |
1438 | ||
c906108c | 1439 | /* C++ More than one line may have been specified, as when the user |
c378eb4e | 1440 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1441 | for (i = 0; i < sals.nelts; i++) |
1442 | { | |
1443 | sal = sals.sals[i]; | |
f8eba3c6 TT |
1444 | if (sal.pspace != current_program_space) |
1445 | continue; | |
c5aa993b | 1446 | |
c906108c SS |
1447 | if (sal.symtab == 0) |
1448 | { | |
5af949e3 UW |
1449 | struct gdbarch *gdbarch = get_current_arch (); |
1450 | ||
a3f17187 | 1451 | printf_filtered (_("No line number information available")); |
c906108c SS |
1452 | if (sal.pc != 0) |
1453 | { | |
1454 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1455 | user about a source line, at least let them have the symbolic |
1456 | address. */ | |
c906108c SS |
1457 | printf_filtered (" for address "); |
1458 | wrap_here (" "); | |
5af949e3 | 1459 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1460 | } |
1461 | else | |
1462 | printf_filtered ("."); | |
1463 | printf_filtered ("\n"); | |
1464 | } | |
1465 | else if (sal.line > 0 | |
1466 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1467 | { | |
5af949e3 UW |
1468 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1469 | ||
c906108c SS |
1470 | if (start_pc == end_pc) |
1471 | { | |
1472 | printf_filtered ("Line %d of \"%s\"", | |
1473 | sal.line, sal.symtab->filename); | |
1474 | wrap_here (" "); | |
1475 | printf_filtered (" is at address "); | |
5af949e3 | 1476 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1477 | wrap_here (" "); |
1478 | printf_filtered (" but contains no code.\n"); | |
1479 | } | |
1480 | else | |
1481 | { | |
1482 | printf_filtered ("Line %d of \"%s\"", | |
1483 | sal.line, sal.symtab->filename); | |
1484 | wrap_here (" "); | |
1485 | printf_filtered (" starts at address "); | |
5af949e3 | 1486 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1487 | wrap_here (" "); |
1488 | printf_filtered (" and ends at "); | |
5af949e3 | 1489 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1490 | printf_filtered (".\n"); |
1491 | } | |
1492 | ||
1493 | /* x/i should display this line's code. */ | |
5af949e3 | 1494 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1495 | |
1496 | /* Repeating "info line" should do the following line. */ | |
1497 | last_line_listed = sal.line + 1; | |
1498 | ||
1499 | /* If this is the only line, show the source code. If it could | |
1500 | not find the file, don't do anything special. */ | |
1501 | if (annotation_level && sals.nelts == 1) | |
1502 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1503 | } | |
1504 | else | |
1505 | /* Is there any case in which we get here, and have an address | |
1506 | which the user would want to see? If we have debugging symbols | |
1507 | and no line numbers? */ | |
a3f17187 | 1508 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1509 | sal.line, sal.symtab->filename); |
1510 | } | |
f8eba3c6 | 1511 | do_cleanups (cleanups); |
c906108c SS |
1512 | } |
1513 | \f | |
1514 | /* Commands to search the source file for a regexp. */ | |
1515 | ||
c906108c | 1516 | static void |
fba45db2 | 1517 | forward_search_command (char *regex, int from_tty) |
c906108c | 1518 | { |
52f0bd74 AC |
1519 | int c; |
1520 | int desc; | |
1521 | FILE *stream; | |
c906108c SS |
1522 | int line; |
1523 | char *msg; | |
9fe4a216 | 1524 | struct cleanup *cleanups; |
c906108c | 1525 | |
c906108c | 1526 | line = last_line_listed + 1; |
c906108c SS |
1527 | |
1528 | msg = (char *) re_comp (regex); | |
1529 | if (msg) | |
8a3fe4f8 | 1530 | error (("%s"), msg); |
c906108c SS |
1531 | |
1532 | if (current_source_symtab == 0) | |
1533 | select_source_symtab (0); | |
1534 | ||
1535 | desc = open_source_file (current_source_symtab); | |
1536 | if (desc < 0) | |
1537 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1538 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1539 | |
1540 | if (current_source_symtab->line_charpos == 0) | |
1541 | find_source_lines (current_source_symtab, desc); | |
1542 | ||
1543 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1544 | error (_("Expression not found")); |
c906108c SS |
1545 | |
1546 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1547 | perror_with_name (current_source_symtab->filename); |
c906108c | 1548 | |
9fe4a216 | 1549 | discard_cleanups (cleanups); |
c906108c SS |
1550 | stream = fdopen (desc, FDOPEN_MODE); |
1551 | clearerr (stream); | |
9fe4a216 | 1552 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1553 | while (1) |
1554 | { | |
1555 | static char *buf = NULL; | |
aa1ee363 | 1556 | char *p; |
c5aa993b JM |
1557 | int cursize, newsize; |
1558 | ||
1559 | cursize = 256; | |
1560 | buf = xmalloc (cursize); | |
1561 | p = buf; | |
1562 | ||
1563 | c = getc (stream); | |
1564 | if (c == EOF) | |
1565 | break; | |
1566 | do | |
c906108c | 1567 | { |
c5aa993b JM |
1568 | *p++ = c; |
1569 | if (p - buf == cursize) | |
1570 | { | |
1571 | newsize = cursize + cursize / 2; | |
1572 | buf = xrealloc (buf, newsize); | |
1573 | p = buf + cursize; | |
1574 | cursize = newsize; | |
1575 | } | |
c906108c | 1576 | } |
c5aa993b | 1577 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1578 | |
7be570e7 JM |
1579 | /* Remove the \r, if any, at the end of the line, otherwise |
1580 | regular expressions that end with $ or \n won't work. */ | |
1581 | if (p - buf > 1 && p[-2] == '\r') | |
1582 | { | |
1583 | p--; | |
1584 | p[-1] = '\n'; | |
1585 | } | |
7be570e7 | 1586 | |
c378eb4e | 1587 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1588 | *p = 0; |
1589 | if (re_exec (buf) > 0) | |
1590 | { | |
c378eb4e | 1591 | /* Match! */ |
e681b284 | 1592 | do_cleanups (cleanups); |
c5aa993b | 1593 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1594 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1595 | current_source_line = max (line - lines_to_list / 2, 1); |
1596 | return; | |
1597 | } | |
1598 | line++; | |
1599 | } | |
c906108c | 1600 | |
a3f17187 | 1601 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1602 | do_cleanups (cleanups); |
c906108c SS |
1603 | } |
1604 | ||
c906108c | 1605 | static void |
fba45db2 | 1606 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1607 | { |
52f0bd74 AC |
1608 | int c; |
1609 | int desc; | |
1610 | FILE *stream; | |
c906108c SS |
1611 | int line; |
1612 | char *msg; | |
9fe4a216 | 1613 | struct cleanup *cleanups; |
063190b6 | 1614 | |
c906108c | 1615 | line = last_line_listed - 1; |
c906108c SS |
1616 | |
1617 | msg = (char *) re_comp (regex); | |
1618 | if (msg) | |
8a3fe4f8 | 1619 | error (("%s"), msg); |
c906108c SS |
1620 | |
1621 | if (current_source_symtab == 0) | |
1622 | select_source_symtab (0); | |
1623 | ||
1624 | desc = open_source_file (current_source_symtab); | |
1625 | if (desc < 0) | |
1626 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1627 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1628 | |
1629 | if (current_source_symtab->line_charpos == 0) | |
1630 | find_source_lines (current_source_symtab, desc); | |
1631 | ||
1632 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1633 | error (_("Expression not found")); |
c906108c SS |
1634 | |
1635 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1636 | perror_with_name (current_source_symtab->filename); |
c906108c | 1637 | |
9fe4a216 | 1638 | discard_cleanups (cleanups); |
c906108c SS |
1639 | stream = fdopen (desc, FDOPEN_MODE); |
1640 | clearerr (stream); | |
9fe4a216 | 1641 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1642 | while (line > 1) |
1643 | { | |
c378eb4e MS |
1644 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1645 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1646 | char *p = buf; |
c906108c SS |
1647 | |
1648 | c = getc (stream); | |
1649 | if (c == EOF) | |
1650 | break; | |
c5aa993b JM |
1651 | do |
1652 | { | |
1653 | *p++ = c; | |
1654 | } | |
1655 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1656 | |
7be570e7 JM |
1657 | /* Remove the \r, if any, at the end of the line, otherwise |
1658 | regular expressions that end with $ or \n won't work. */ | |
1659 | if (p - buf > 1 && p[-2] == '\r') | |
1660 | { | |
1661 | p--; | |
1662 | p[-1] = '\n'; | |
1663 | } | |
7be570e7 | 1664 | |
c906108c SS |
1665 | /* We now have a source line in buf; null terminate and match. */ |
1666 | *p = 0; | |
1667 | if (re_exec (buf) > 0) | |
1668 | { | |
c378eb4e | 1669 | /* Match! */ |
e681b284 | 1670 | do_cleanups (cleanups); |
c5aa993b | 1671 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1672 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1673 | current_source_line = max (line - lines_to_list / 2, 1); |
1674 | return; | |
1675 | } | |
1676 | line--; | |
1677 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1678 | { | |
e681b284 | 1679 | do_cleanups (cleanups); |
c906108c SS |
1680 | perror_with_name (current_source_symtab->filename); |
1681 | } | |
1682 | } | |
1683 | ||
a3f17187 | 1684 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1685 | do_cleanups (cleanups); |
c906108c SS |
1686 | return; |
1687 | } | |
2f61ca93 JB |
1688 | |
1689 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1690 | ||
1691 | static void | |
1692 | strip_trailing_directory_separator (char *path) | |
1693 | { | |
1694 | const int last = strlen (path) - 1; | |
1695 | ||
1696 | if (last < 0) | |
1697 | return; /* No stripping is needed if PATH is the empty string. */ | |
1698 | ||
1699 | if (IS_DIR_SEPARATOR (path[last])) | |
1700 | path[last] = '\0'; | |
1701 | } | |
1702 | ||
1703 | /* Return the path substitution rule that matches FROM. | |
1704 | Return NULL if no rule matches. */ | |
1705 | ||
1706 | static struct substitute_path_rule * | |
1707 | find_substitute_path_rule (const char *from) | |
1708 | { | |
1709 | struct substitute_path_rule *rule = substitute_path_rules; | |
1710 | ||
1711 | while (rule != NULL) | |
1712 | { | |
1713 | if (FILENAME_CMP (rule->from, from) == 0) | |
1714 | return rule; | |
1715 | rule = rule->next; | |
1716 | } | |
1717 | ||
1718 | return NULL; | |
1719 | } | |
1720 | ||
1721 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1722 | The new rule will replace FROM into TO. */ | |
1723 | ||
29b0e8a2 | 1724 | void |
2f61ca93 JB |
1725 | add_substitute_path_rule (char *from, char *to) |
1726 | { | |
1727 | struct substitute_path_rule *rule; | |
1728 | struct substitute_path_rule *new_rule; | |
1729 | ||
1730 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1731 | new_rule->from = xstrdup (from); | |
1732 | new_rule->to = xstrdup (to); | |
1733 | new_rule->next = NULL; | |
1734 | ||
1735 | /* If the list of rules are empty, then insert the new rule | |
1736 | at the head of the list. */ | |
1737 | ||
1738 | if (substitute_path_rules == NULL) | |
1739 | { | |
1740 | substitute_path_rules = new_rule; | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | /* Otherwise, skip to the last rule in our list and then append | |
1745 | the new rule. */ | |
1746 | ||
1747 | rule = substitute_path_rules; | |
1748 | while (rule->next != NULL) | |
1749 | rule = rule->next; | |
1750 | ||
1751 | rule->next = new_rule; | |
1752 | } | |
1753 | ||
1754 | /* Remove the given source path substitution rule from the current list | |
1755 | of rules. The memory allocated for that rule is also deallocated. */ | |
1756 | ||
1757 | static void | |
1758 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1759 | { | |
1760 | if (rule == substitute_path_rules) | |
1761 | substitute_path_rules = rule->next; | |
1762 | else | |
1763 | { | |
1764 | struct substitute_path_rule *prev = substitute_path_rules; | |
1765 | ||
1766 | while (prev != NULL && prev->next != rule) | |
1767 | prev = prev->next; | |
1768 | ||
1769 | gdb_assert (prev != NULL); | |
1770 | ||
1771 | prev->next = rule->next; | |
1772 | } | |
1773 | ||
1774 | xfree (rule->from); | |
1775 | xfree (rule->to); | |
1776 | xfree (rule); | |
1777 | } | |
1778 | ||
1779 | /* Implement the "show substitute-path" command. */ | |
1780 | ||
1781 | static void | |
1782 | show_substitute_path_command (char *args, int from_tty) | |
1783 | { | |
1784 | struct substitute_path_rule *rule = substitute_path_rules; | |
1785 | char **argv; | |
1786 | char *from = NULL; | |
1787 | ||
d1a41061 | 1788 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1789 | make_cleanup_freeargv (argv); |
1790 | ||
1791 | /* We expect zero or one argument. */ | |
1792 | ||
1793 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1794 | error (_("Too many arguments in command")); | |
1795 | ||
1796 | if (argv != NULL && argv[0] != NULL) | |
1797 | from = argv[0]; | |
1798 | ||
1799 | /* Print the substitution rules. */ | |
1800 | ||
1801 | if (from != NULL) | |
1802 | printf_filtered | |
1803 | (_("Source path substitution rule matching `%s':\n"), from); | |
1804 | else | |
1805 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1806 | ||
1807 | while (rule != NULL) | |
1808 | { | |
1809 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1810 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1811 | rule = rule->next; | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | /* Implement the "unset substitute-path" command. */ | |
1816 | ||
1817 | static void | |
1818 | unset_substitute_path_command (char *args, int from_tty) | |
1819 | { | |
1820 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1821 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1822 | char *from = NULL; |
1823 | int rule_found = 0; | |
1824 | ||
1825 | /* This function takes either 0 or 1 argument. */ | |
1826 | ||
77accacd | 1827 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1828 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1829 | error (_("Incorrect usage, too many arguments in command")); | |
1830 | ||
1831 | if (argv != NULL && argv[0] != NULL) | |
1832 | from = argv[0]; | |
1833 | ||
1834 | /* If the user asked for all the rules to be deleted, ask him | |
1835 | to confirm and give him a chance to abort before the action | |
1836 | is performed. */ | |
1837 | ||
1838 | if (from == NULL | |
1839 | && !query (_("Delete all source path substitution rules? "))) | |
1840 | error (_("Canceled")); | |
1841 | ||
1842 | /* Delete the rule matching the argument. No argument means that | |
1843 | all rules should be deleted. */ | |
1844 | ||
1845 | while (rule != NULL) | |
1846 | { | |
1847 | struct substitute_path_rule *next = rule->next; | |
1848 | ||
1849 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1850 | { | |
1851 | delete_substitute_path_rule (rule); | |
1852 | rule_found = 1; | |
1853 | } | |
1854 | ||
1855 | rule = next; | |
1856 | } | |
1857 | ||
1858 | /* If the user asked for a specific rule to be deleted but | |
1859 | we could not find it, then report an error. */ | |
1860 | ||
1861 | if (from != NULL && !rule_found) | |
1862 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1863 | |
1864 | forget_cached_source_info (); | |
2f61ca93 JB |
1865 | } |
1866 | ||
1867 | /* Add a new source path substitution rule. */ | |
1868 | ||
1869 | static void | |
1870 | set_substitute_path_command (char *args, int from_tty) | |
1871 | { | |
2f61ca93 JB |
1872 | char **argv; |
1873 | struct substitute_path_rule *rule; | |
1874 | ||
d1a41061 | 1875 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1876 | make_cleanup_freeargv (argv); |
1877 | ||
1878 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1879 | error (_("Incorrect usage, too few arguments in command")); | |
1880 | ||
1881 | if (argv[2] != NULL) | |
1882 | error (_("Incorrect usage, too many arguments in command")); | |
1883 | ||
1884 | if (*(argv[0]) == '\0') | |
1885 | error (_("First argument must be at least one character long")); | |
1886 | ||
1887 | /* Strip any trailing directory separator character in either FROM | |
1888 | or TO. The substitution rule already implicitly contains them. */ | |
1889 | strip_trailing_directory_separator (argv[0]); | |
1890 | strip_trailing_directory_separator (argv[1]); | |
1891 | ||
1892 | /* If a rule with the same "from" was previously defined, then | |
1893 | delete it. This new rule replaces it. */ | |
1894 | ||
1895 | rule = find_substitute_path_rule (argv[0]); | |
1896 | if (rule != NULL) | |
1897 | delete_substitute_path_rule (rule); | |
1898 | ||
1899 | /* Insert the new substitution rule. */ | |
1900 | ||
1901 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1902 | forget_cached_source_info (); |
2f61ca93 JB |
1903 | } |
1904 | ||
c906108c SS |
1905 | \f |
1906 | void | |
fba45db2 | 1907 | _initialize_source (void) |
c906108c SS |
1908 | { |
1909 | struct cmd_list_element *c; | |
433759f7 | 1910 | |
c906108c SS |
1911 | current_source_symtab = 0; |
1912 | init_source_path (); | |
1913 | ||
1914 | /* The intention is to use POSIX Basic Regular Expressions. | |
1915 | Always use the GNU regex routine for consistency across all hosts. | |
1916 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1917 | just an approximation. */ | |
1918 | re_set_syntax (RE_SYNTAX_GREP); | |
1919 | ||
1a966eab AC |
1920 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1921 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1922 | Forget cached info on source file locations and line positions.\n\ |
1923 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1924 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1925 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1926 | &cmdlist); |
1927 | ||
1928 | if (dbx_commands) | |
c5aa993b | 1929 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1930 | |
5ba2abeb | 1931 | set_cmd_completer (c, filename_completer); |
c906108c | 1932 | |
99e7ae30 DE |
1933 | add_setshow_optional_filename_cmd ("directories", |
1934 | class_files, | |
1935 | &source_path, | |
1936 | _("\ | |
1937 | Set the search path for finding source files."), | |
1938 | _("\ | |
1939 | Show the search path for finding source files."), | |
1940 | _("\ | |
c906108c | 1941 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1942 | $cdir in the path means the compilation directory of the source file.\n\ |
1943 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1944 | appending these directories if necessary.\n\ | |
1945 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1946 | set_directories_command, | |
1947 | show_directories_command, | |
1948 | &setlist, &showlist); | |
c906108c SS |
1949 | |
1950 | if (xdb_commands) | |
1951 | { | |
c5aa993b | 1952 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 1953 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 1954 | Current search path for finding source files.\n\ |
c906108c | 1955 | $cwd in the path means the current working directory.\n\ |
1a966eab | 1956 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 1957 | &cmdlist); |
c906108c SS |
1958 | } |
1959 | ||
1960 | add_info ("source", source_info, | |
1bedd215 | 1961 | _("Information about the current source file.")); |
c906108c | 1962 | |
1bedd215 AC |
1963 | add_info ("line", line_info, _("\ |
1964 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
1965 | Line can be specified as\n\ |
1966 | LINENUM, to list around that line in current file,\n\ | |
1967 | FILE:LINENUM, to list around that line in that file,\n\ | |
1968 | FUNCTION, to list around beginning of that function,\n\ | |
1969 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1970 | Default is to describe the last source line that was listed.\n\n\ |
1971 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1972 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1973 | The address is also stored as the value of \"$_\".")); |
c906108c | 1974 | |
1bedd215 AC |
1975 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1976 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1977 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
1978 | add_com_alias ("search", "forward-search", class_files, 0); |
1979 | ||
1bedd215 AC |
1980 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1981 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1982 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1983 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
1984 | |
1985 | if (xdb_commands) | |
1986 | { | |
c5aa993b JM |
1987 | add_com_alias ("/", "forward-search", class_files, 0); |
1988 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1989 | } |
1990 | ||
bd4109fb | 1991 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d AC |
1992 | Set number of source lines gdb will list by default."), _("\ |
1993 | Show number of source lines gdb will list by default."), NULL, | |
1994 | NULL, | |
920d2a44 | 1995 | show_lines_to_list, |
35096d9d | 1996 | &setlist, &showlist); |
2f61ca93 JB |
1997 | |
1998 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1999 | _("\ | |
7ef2b397 JB |
2000 | Usage: set substitute-path FROM TO\n\ |
2001 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2002 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2003 | is replaced by the new one."), | |
2004 | &setlist); | |
2f61ca93 JB |
2005 | |
2006 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2007 | _("\ | |
7ef2b397 JB |
2008 | Usage: unset substitute-path [FROM]\n\ |
2009 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2010 | is not specified, all substituting rules are deleted.\n\ | |
2011 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2012 | &unsetlist); |
2013 | ||
2014 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2015 | _("\ |
2016 | Usage: show substitute-path [FROM]\n\ | |
2017 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2018 | is not specified, print all substitution rules."), | |
2f61ca93 | 2019 | &showlist); |
c906108c | 2020 | } |