Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
28e7fd62 | 2 | Copyright (C) 1986-2013 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 | { |
39cf75f7 DE |
246 | sals = decode_line_with_current_source (main_name (), |
247 | DECODE_LINE_FUNFIRSTLINE); | |
c906108c | 248 | sal = sals.sals[0]; |
b8c9b27d | 249 | xfree (sals.sals); |
6c95b8df | 250 | current_source_pspace = sal.pspace; |
c906108c SS |
251 | current_source_symtab = sal.symtab; |
252 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
253 | if (current_source_symtab) | |
c5aa993b | 254 | return; |
c906108c | 255 | } |
c5aa993b | 256 | |
8340a3fb LM |
257 | /* Alright; find the last file in the symtab list (ignoring .h's |
258 | and namespace symtabs). */ | |
c906108c SS |
259 | |
260 | current_source_line = 1; | |
261 | ||
6c95b8df | 262 | ALL_OBJFILES (ofp) |
c906108c | 263 | { |
c5aa993b | 264 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 265 | { |
591e78ff | 266 | const char *name = s->filename; |
c906108c | 267 | int len = strlen (name); |
433759f7 | 268 | |
8340a3fb LM |
269 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
270 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
271 | { |
272 | current_source_pspace = current_program_space; | |
273 | current_source_symtab = s; | |
274 | } | |
c906108c SS |
275 | } |
276 | } | |
6c95b8df | 277 | |
c906108c SS |
278 | if (current_source_symtab) |
279 | return; | |
280 | ||
6c95b8df | 281 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
282 | { |
283 | if (ofp->sf) | |
284 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
285 | if (s) | |
286 | current_source_symtab = s; | |
287 | } | |
c906108c SS |
288 | if (current_source_symtab) |
289 | return; | |
290 | ||
8a3fe4f8 | 291 | error (_("Can't find a default source file")); |
c906108c SS |
292 | } |
293 | \f | |
99e7ae30 DE |
294 | /* Handler for "set directories path-list" command. |
295 | "set dir mumble" doesn't prepend paths, it resets the entire | |
296 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
297 | ||
298 | static void | |
299 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
300 | { | |
301 | /* This is the value that was set. | |
302 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
303 | char *set_path = source_path; | |
304 | ||
305 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
306 | the list by calling init_source_path. If they appear earlier in | |
307 | SET_PATH then mod_path will move them appropriately. | |
308 | mod_path will also remove duplicates. */ | |
309 | init_source_path (); | |
310 | if (*set_path != '\0') | |
311 | mod_path (set_path, &source_path); | |
312 | ||
313 | xfree (set_path); | |
314 | } | |
315 | ||
316 | /* Print the list of source directories. | |
317 | This is used by the "ld" command, so it has the signature of a command | |
318 | function. */ | |
319 | ||
c906108c | 320 | static void |
99e7ae30 | 321 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
322 | { |
323 | puts_filtered ("Source directories searched: "); | |
324 | puts_filtered (source_path); | |
325 | puts_filtered ("\n"); | |
326 | } | |
327 | ||
99e7ae30 DE |
328 | /* Handler for "show directories" command. */ |
329 | ||
330 | static void | |
331 | show_directories_command (struct ui_file *file, int from_tty, | |
332 | struct cmd_list_element *c, const char *value) | |
333 | { | |
334 | show_directories_1 (NULL, from_tty); | |
335 | } | |
336 | ||
00174a86 TT |
337 | /* Forget line positions and file names for the symtabs in a |
338 | particular objfile. */ | |
339 | ||
340 | void | |
341 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
342 | { | |
343 | struct symtab *s; | |
344 | ||
345 | ALL_OBJFILE_SYMTABS (objfile, s) | |
346 | { | |
347 | if (s->line_charpos != NULL) | |
348 | { | |
349 | xfree (s->line_charpos); | |
350 | s->line_charpos = NULL; | |
351 | } | |
352 | if (s->fullname != NULL) | |
353 | { | |
354 | xfree (s->fullname); | |
355 | s->fullname = NULL; | |
356 | } | |
00174a86 | 357 | } |
6f809020 DE |
358 | |
359 | if (objfile->sf) | |
360 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
361 | } |
362 | ||
c906108c SS |
363 | /* Forget what we learned about line positions in source files, and |
364 | which directories contain them; must check again now since files | |
365 | may be found in a different directory now. */ | |
366 | ||
367 | void | |
fba45db2 | 368 | forget_cached_source_info (void) |
c906108c | 369 | { |
6c95b8df | 370 | struct program_space *pspace; |
52f0bd74 | 371 | struct objfile *objfile; |
c906108c | 372 | |
6c95b8df PA |
373 | ALL_PSPACES (pspace) |
374 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 375 | { |
00174a86 | 376 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 377 | } |
c4e86dd4 DJ |
378 | |
379 | last_source_visited = NULL; | |
c906108c SS |
380 | } |
381 | ||
382 | void | |
fba45db2 | 383 | init_source_path (void) |
c906108c SS |
384 | { |
385 | char buf[20]; | |
386 | ||
08850b56 | 387 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 388 | source_path = xstrdup (buf); |
c906108c SS |
389 | forget_cached_source_info (); |
390 | } | |
391 | ||
392 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 393 | |
28da1647 | 394 | static void |
fba45db2 | 395 | directory_command (char *dirname, int from_tty) |
c906108c SS |
396 | { |
397 | dont_repeat (); | |
c378eb4e | 398 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
399 | if (dirname == 0) |
400 | { | |
80618b99 | 401 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 402 | { |
b8c9b27d | 403 | xfree (source_path); |
c906108c SS |
404 | init_source_path (); |
405 | } | |
406 | } | |
407 | else | |
408 | { | |
409 | mod_path (dirname, &source_path); | |
c4e86dd4 | 410 | forget_cached_source_info (); |
c906108c SS |
411 | } |
412 | if (from_tty) | |
99e7ae30 | 413 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
414 | } |
415 | ||
13d35ae5 AS |
416 | /* Add a path given with the -d command line switch. |
417 | This will not be quoted so we must not treat spaces as separators. */ | |
418 | ||
419 | void | |
420 | directory_switch (char *dirname, int from_tty) | |
421 | { | |
422 | add_path (dirname, &source_path, 0); | |
423 | } | |
424 | ||
c906108c SS |
425 | /* Add zero or more directories to the front of an arbitrary path. */ |
426 | ||
427 | void | |
fba45db2 | 428 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
429 | { |
430 | add_path (dirname, which_path, 1); | |
431 | } | |
432 | ||
433 | /* Workhorse of mod_path. Takes an extra argument to determine | |
434 | if dirname should be parsed for separators that indicate multiple | |
435 | directories. This allows for interfaces that pre-parse the dirname | |
436 | and allow specification of traditional separator characters such | |
c378eb4e | 437 | as space or tab. */ |
c04e0a08 JJ |
438 | |
439 | void | |
440 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
441 | { |
442 | char *old = *which_path; | |
443 | int prefix = 0; | |
e4ab2fad JK |
444 | VEC (char_ptr) *dir_vec = NULL; |
445 | struct cleanup *back_to; | |
446 | int ix; | |
447 | char *name; | |
c906108c SS |
448 | |
449 | if (dirname == 0) | |
450 | return; | |
451 | ||
13d35ae5 AS |
452 | if (parse_separators) |
453 | { | |
e4ab2fad JK |
454 | char **argv, **argvp; |
455 | ||
13d35ae5 | 456 | /* This will properly parse the space and tab separators |
e4ab2fad | 457 | and any quotes that may exist. */ |
d1a41061 | 458 | argv = gdb_buildargv (dirname); |
13d35ae5 | 459 | |
e4ab2fad JK |
460 | for (argvp = argv; *argvp; argvp++) |
461 | dirnames_to_char_ptr_vec_append (&dir_vec, *argvp); | |
462 | ||
463 | freeargv (argv); | |
13d35ae5 AS |
464 | } |
465 | else | |
e4ab2fad JK |
466 | VEC_safe_push (char_ptr, dir_vec, xstrdup (dirname)); |
467 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
c906108c | 468 | |
e4ab2fad | 469 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, name); ++ix) |
c906108c | 470 | { |
aa1ee363 | 471 | char *p; |
c906108c SS |
472 | struct stat st; |
473 | ||
e4ab2fad JK |
474 | /* Spaces and tabs will have been removed by buildargv(). |
475 | NAME is the start of the directory. | |
476 | P is the '\0' following the end. */ | |
477 | p = name + strlen (name); | |
13d35ae5 AS |
478 | |
479 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 480 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 481 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 482 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 483 | #endif |
13d35ae5 | 484 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 485 | /* Sigh. "foo/" => "foo" */ |
c906108c | 486 | --p; |
c906108c SS |
487 | *p = '\0'; |
488 | ||
7be570e7 | 489 | while (p > name && p[-1] == '.') |
c906108c SS |
490 | { |
491 | if (p - name == 1) | |
492 | { | |
493 | /* "." => getwd (). */ | |
494 | name = current_directory; | |
495 | goto append; | |
496 | } | |
fe4e3eb8 | 497 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
498 | { |
499 | if (p - name == 2) | |
500 | { | |
501 | /* "/." => "/". */ | |
502 | *--p = '\0'; | |
503 | goto append; | |
504 | } | |
505 | else | |
506 | { | |
507 | /* "...foo/." => "...foo". */ | |
508 | p -= 2; | |
509 | *p = '\0'; | |
510 | continue; | |
511 | } | |
512 | } | |
513 | else | |
514 | break; | |
515 | } | |
516 | ||
517 | if (name[0] == '~') | |
518 | name = tilde_expand (name); | |
c3690141 | 519 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 520 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 521 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 522 | #endif |
fe4e3eb8 | 523 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 524 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
525 | else |
526 | name = savestring (name, p - name); | |
b8c9b27d | 527 | make_cleanup (xfree, name); |
c906108c SS |
528 | |
529 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
530 | if (name[0] != '$') |
531 | { | |
532 | /* These are warnings, not errors, since we don't want a | |
533 | non-existent directory in a .gdbinit file to stop processing | |
534 | of the .gdbinit file. | |
535 | ||
536 | Whether they get added to the path is more debatable. Current | |
537 | answer is yes, in case the user wants to go make the directory | |
538 | or whatever. If the directory continues to not exist/not be | |
539 | a directory/etc, then having them in the path should be | |
540 | harmless. */ | |
541 | if (stat (name, &st) < 0) | |
542 | { | |
543 | int save_errno = errno; | |
433759f7 | 544 | |
c5aa993b JM |
545 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
546 | print_sys_errmsg (name, save_errno); | |
547 | } | |
548 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 549 | warning (_("%s is not a directory."), name); |
c5aa993b | 550 | } |
c906108c SS |
551 | |
552 | append: | |
553 | { | |
aa1ee363 | 554 | unsigned int len = strlen (name); |
5ee4ed9f | 555 | char tinybuf[2]; |
c906108c SS |
556 | |
557 | p = *which_path; | |
e4ab2fad JK |
558 | /* FIXME: we should use realpath() or its work-alike |
559 | before comparing. Then all the code above which | |
560 | removes excess slashes and dots could simply go away. */ | |
561 | if (!filename_cmp (p, name)) | |
c906108c | 562 | { |
e4ab2fad JK |
563 | /* Found it in the search path, remove old copy. */ |
564 | if (p > *which_path) | |
565 | p--; /* Back over leading separator. */ | |
566 | if (prefix > p - *which_path) | |
567 | goto skip_dup; /* Same dir twice in one cmd. */ | |
568 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); /* Copy from next \0 or : */ | |
c906108c | 569 | } |
c906108c | 570 | |
5ee4ed9f JK |
571 | tinybuf[0] = DIRNAME_SEPARATOR; |
572 | tinybuf[1] = '\0'; | |
c906108c | 573 | |
5ee4ed9f JK |
574 | /* If we have already tacked on a name(s) in this command, |
575 | be sure they stay on the front as we tack on some | |
576 | more. */ | |
577 | if (prefix) | |
578 | { | |
579 | char *temp, c; | |
580 | ||
581 | c = old[prefix]; | |
582 | old[prefix] = '\0'; | |
583 | temp = concat (old, tinybuf, name, (char *)NULL); | |
584 | old[prefix] = c; | |
585 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
586 | prefix = strlen (temp); | |
587 | xfree (temp); | |
588 | } | |
589 | else | |
590 | { | |
591 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
592 | old, (char *)NULL); | |
593 | prefix = strlen (name); | |
c906108c | 594 | } |
5ee4ed9f JK |
595 | xfree (old); |
596 | old = *which_path; | |
c906108c | 597 | } |
82ae4854 | 598 | skip_dup: |
b27cf2b3 | 599 | ; |
c5aa993b | 600 | } |
e4ab2fad JK |
601 | |
602 | do_cleanups (back_to); | |
c906108c SS |
603 | } |
604 | ||
605 | ||
606 | static void | |
fba45db2 | 607 | source_info (char *ignore, int from_tty) |
c906108c | 608 | { |
52f0bd74 | 609 | struct symtab *s = current_source_symtab; |
c906108c SS |
610 | |
611 | if (!s) | |
612 | { | |
a3f17187 | 613 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
614 | return; |
615 | } | |
a3f17187 | 616 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 617 | if (s->dirname) |
a3f17187 | 618 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 619 | if (s->fullname) |
a3f17187 | 620 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 621 | if (s->nlines) |
a3f17187 | 622 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
623 | s->nlines == 1 ? "" : "s"); |
624 | ||
a3f17187 AC |
625 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
626 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
627 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 628 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 629 | } |
c5aa993b | 630 | \f |
c906108c | 631 | |
c378eb4e | 632 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
633 | static int |
634 | is_regular_file (const char *name) | |
635 | { | |
636 | struct stat st; | |
637 | const int status = stat (name, &st); | |
638 | ||
639 | /* Stat should never fail except when the file does not exist. | |
640 | If stat fails, analyze the source of error and return True | |
641 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
642 | on obscure systems where stat does not work as expected. */ |
643 | ||
1da1a192 JB |
644 | if (status != 0) |
645 | return (errno != ENOENT); | |
646 | ||
647 | return S_ISREG (st.st_mode); | |
648 | } | |
c906108c | 649 | |
c906108c | 650 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
651 | using mode MODE in the calls to open. You cannot use this function to |
652 | create files (O_CREAT). | |
c906108c | 653 | |
014d698b EZ |
654 | OPTS specifies the function behaviour in specific cases. |
655 | ||
656 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
657 | (ie pretend the first element of PATH is "."). This also indicates |
658 | that a slash in STRING disables searching of the path (this is | |
659 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
660 | get that particular version of foo or an error message). | |
661 | ||
014d698b EZ |
662 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
663 | searched in path (we usually want this for source files but not for | |
664 | executables). | |
665 | ||
e7a8479f | 666 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 667 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
668 | have to take special pains to avoid doubling the "/" between the directory |
669 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
670 | source file name!!! | |
671 | ||
672 | If a file is found, return the descriptor. | |
673 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
674 | ||
675 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 676 | >>>> eg executable, non-directory. */ |
c906108c | 677 | int |
014d698b | 678 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 679 | int mode, char **filename_opened) |
c906108c | 680 | { |
52f0bd74 AC |
681 | int fd; |
682 | char *filename; | |
c906108c | 683 | int alloclen; |
e4ab2fad JK |
684 | VEC (char_ptr) *dir_vec; |
685 | struct cleanup *back_to; | |
686 | int ix; | |
687 | char *dir; | |
c906108c | 688 | |
fbdebf46 JK |
689 | /* The open syscall MODE parameter is not specified. */ |
690 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
691 | gdb_assert (string != NULL); |
692 | ||
693 | /* A file with an empty name cannot possibly exist. Report a failure | |
694 | without further checking. | |
695 | ||
696 | This is an optimization which also defends us against buggy | |
697 | implementations of the "stat" function. For instance, we have | |
698 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
699 | when the debugger is started with an empty argument. */ | |
700 | if (string[0] == '\0') | |
701 | { | |
702 | errno = ENOENT; | |
703 | return -1; | |
704 | } | |
fbdebf46 | 705 | |
c906108c SS |
706 | if (!path) |
707 | path = "."; | |
708 | ||
c906108c | 709 | mode |= O_BINARY; |
c906108c | 710 | |
014d698b | 711 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
712 | { |
713 | int i; | |
072b1022 DJ |
714 | |
715 | if (is_regular_file (string)) | |
716 | { | |
717 | filename = alloca (strlen (string) + 1); | |
718 | strcpy (filename, string); | |
fbdebf46 | 719 | fd = open (filename, mode); |
072b1022 DJ |
720 | if (fd >= 0) |
721 | goto done; | |
722 | } | |
723 | else | |
3f565f1e DJ |
724 | { |
725 | filename = NULL; | |
726 | fd = -1; | |
727 | } | |
072b1022 | 728 | |
014d698b EZ |
729 | if (!(opts & OPF_SEARCH_IN_PATH)) |
730 | for (i = 0; string[i]; i++) | |
731 | if (IS_DIR_SEPARATOR (string[i])) | |
732 | goto done; | |
c906108c SS |
733 | } |
734 | ||
e6d9b9c2 DE |
735 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
736 | if (HAS_DRIVE_SPEC (string)) | |
737 | string = STRIP_DRIVE_SPEC (string); | |
738 | ||
c378eb4e | 739 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
740 | while (IS_DIR_SEPARATOR(string[0])) |
741 | string++; | |
742 | ||
c906108c | 743 | /* ./foo => foo */ |
fe4e3eb8 | 744 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
745 | string += 2; |
746 | ||
747 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 748 | filename = alloca (alloclen); |
c906108c | 749 | fd = -1; |
e4ab2fad JK |
750 | |
751 | dir_vec = dirnames_to_char_ptr_vec (path); | |
752 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
753 | ||
754 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, dir); ++ix) | |
c906108c | 755 | { |
e4ab2fad | 756 | size_t len = strlen (dir); |
c906108c | 757 | |
e4ab2fad | 758 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
759 | { |
760 | /* Name is $cwd -- insert current directory name instead. */ | |
761 | int newlen; | |
762 | ||
c378eb4e | 763 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
764 | len = strlen (current_directory); |
765 | newlen = len + strlen (string) + 2; | |
766 | if (newlen > alloclen) | |
767 | { | |
768 | alloclen = newlen; | |
1f8cc6db | 769 | filename = alloca (alloclen); |
c5aa993b JM |
770 | } |
771 | strcpy (filename, current_directory); | |
772 | } | |
ebd86fb5 TJB |
773 | else if (strchr(dir, '~')) |
774 | { | |
775 | /* See whether we need to expand the tilde. */ | |
776 | int newlen; | |
777 | char *tilde_expanded; | |
778 | ||
779 | tilde_expanded = tilde_expand (dir); | |
780 | ||
781 | /* First, realloc the filename buffer if too short. */ | |
782 | len = strlen (tilde_expanded); | |
783 | newlen = len + strlen (string) + 2; | |
784 | if (newlen > alloclen) | |
785 | { | |
786 | alloclen = newlen; | |
787 | filename = alloca (alloclen); | |
788 | } | |
789 | strcpy (filename, tilde_expanded); | |
790 | xfree (tilde_expanded); | |
791 | } | |
c5aa993b JM |
792 | else |
793 | { | |
794 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 795 | strcpy (filename, dir); |
08001717 DE |
796 | |
797 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
798 | don't have enough information to expand it. The user *could* | |
799 | have an actual directory named '$cdir' but handling that would | |
800 | be confusing, it would mean different things in different | |
801 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
802 | We can get $cdir when loading scripts. When loading source files | |
803 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 804 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 805 | continue; |
c906108c | 806 | } |
c906108c | 807 | |
c378eb4e | 808 | /* Remove trailing slashes. */ |
fe4e3eb8 | 809 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
810 | filename[--len] = 0; |
811 | ||
c5aa993b | 812 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
813 | strcat (filename, string); |
814 | ||
1da1a192 | 815 | if (is_regular_file (filename)) |
5e987968 AS |
816 | { |
817 | fd = open (filename, mode); | |
818 | if (fd >= 0) | |
819 | break; | |
820 | } | |
c906108c SS |
821 | } |
822 | ||
e4ab2fad JK |
823 | do_cleanups (back_to); |
824 | ||
c5aa993b | 825 | done: |
c906108c SS |
826 | if (filename_opened) |
827 | { | |
c378eb4e | 828 | /* If a file was opened, canonicalize its filename. Use xfullpath |
a89f66e4 | 829 | rather than gdb_realpath to avoid resolving the basename part |
c378eb4e | 830 | of filenames when the associated file is a symbolic link. This |
a89f66e4 JB |
831 | fixes a potential inconsistency between the filenames known to |
832 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 833 | if (fd < 0) |
1f8cc6db | 834 | *filename_opened = NULL; |
fe4e3eb8 | 835 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 836 | *filename_opened = xfullpath (filename); |
c906108c SS |
837 | else |
838 | { | |
c378eb4e | 839 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ |
c5aa993b | 840 | |
58d370e0 | 841 | char *f = concat (current_directory, |
5e987968 AS |
842 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
843 | ? "" : SLASH_STRING, | |
1754f103 | 844 | filename, (char *)NULL); |
433759f7 | 845 | |
a89f66e4 | 846 | *filename_opened = xfullpath (f); |
58d370e0 | 847 | xfree (f); |
c5aa993b | 848 | } |
c906108c | 849 | } |
c906108c SS |
850 | |
851 | return fd; | |
852 | } | |
853 | ||
c5aa993b | 854 | |
c906108c SS |
855 | /* This is essentially a convenience, for clients that want the behaviour |
856 | of openp, using source_path, but that really don't want the file to be | |
857 | opened but want instead just to know what the full pathname is (as | |
858 | qualified against source_path). | |
859 | ||
860 | The current working directory is searched first. | |
861 | ||
862 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
863 | set to the fully-qualified pathname. | |
864 | ||
5e987968 | 865 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 866 | int |
24f81874 | 867 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 868 | { |
c5aa993b | 869 | int fd; |
c906108c | 870 | |
014d698b | 871 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 872 | O_RDONLY, full_pathname); |
c906108c SS |
873 | if (fd < 0) |
874 | { | |
875 | *full_pathname = NULL; | |
876 | return 0; | |
877 | } | |
878 | ||
879 | close (fd); | |
880 | return 1; | |
881 | } | |
882 | ||
2f61ca93 JB |
883 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
884 | applied to PATH. */ | |
885 | ||
886 | static int | |
887 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
888 | const char *path) | |
889 | { | |
890 | const int from_len = strlen (rule->from); | |
891 | const int path_len = strlen (path); | |
892 | char *path_start; | |
893 | ||
894 | if (path_len < from_len) | |
895 | return 0; | |
896 | ||
897 | /* The substitution rules are anchored at the start of the path, | |
898 | so the path should start with rule->from. There is no filename | |
899 | comparison routine, so we need to extract the first FROM_LEN | |
900 | characters from PATH first and use that to do the comparison. */ | |
901 | ||
902 | path_start = alloca (from_len + 1); | |
903 | strncpy (path_start, path, from_len); | |
904 | path_start[from_len] = '\0'; | |
905 | ||
906 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
907 | return 0; | |
908 | ||
909 | /* Make sure that the region in the path that matches the substitution | |
910 | rule is immediately followed by a directory separator (or the end of | |
911 | string character). */ | |
912 | ||
913 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
914 | return 0; | |
915 | ||
916 | return 1; | |
917 | } | |
918 | ||
919 | /* Find the substitute-path rule that applies to PATH and return it. | |
920 | Return NULL if no rule applies. */ | |
921 | ||
922 | static struct substitute_path_rule * | |
923 | get_substitute_path_rule (const char *path) | |
924 | { | |
925 | struct substitute_path_rule *rule = substitute_path_rules; | |
926 | ||
927 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
928 | rule = rule->next; | |
929 | ||
930 | return rule; | |
931 | } | |
932 | ||
933 | /* If the user specified a source path substitution rule that applies | |
934 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 935 | be deallocated afterwards. |
2f61ca93 JB |
936 | |
937 | Return NULL if no substitution rule was specified by the user, | |
938 | or if no rule applied to the given PATH. */ | |
939 | ||
940 | static char * | |
941 | rewrite_source_path (const char *path) | |
942 | { | |
943 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
944 | char *new_path; | |
945 | int from_len; | |
946 | ||
947 | if (rule == NULL) | |
948 | return NULL; | |
949 | ||
950 | from_len = strlen (rule->from); | |
951 | ||
952 | /* Compute the rewritten path and return it. */ | |
953 | ||
954 | new_path = | |
955 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
956 | strcpy (new_path, rule->to); | |
957 | strcat (new_path, path + from_len); | |
958 | ||
959 | return new_path; | |
960 | } | |
961 | ||
ccefe4c4 | 962 | int |
e2357892 | 963 | find_and_open_source (const char *filename, |
5e987968 AS |
964 | const char *dirname, |
965 | char **fullname) | |
c906108c SS |
966 | { |
967 | char *path = source_path; | |
31889e00 | 968 | const char *p; |
c906108c | 969 | int result; |
c906108c | 970 | |
c378eb4e | 971 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 972 | |
57c22c6c | 973 | if (*fullname) |
c906108c | 974 | { |
2f61ca93 JB |
975 | /* The user may have requested that source paths be rewritten |
976 | according to substitution rules he provided. If a substitution | |
977 | rule applies to this path, then apply it. */ | |
978 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
979 | ||
980 | if (rewritten_fullname != NULL) | |
981 | { | |
982 | xfree (*fullname); | |
983 | *fullname = rewritten_fullname; | |
984 | } | |
985 | ||
57c22c6c | 986 | result = open (*fullname, OPEN_MODE); |
c906108c | 987 | if (result >= 0) |
bc3aa6c3 DE |
988 | { |
989 | /* Call xfullpath here to be consistent with openp | |
990 | which we use below. */ | |
991 | char *lpath = xfullpath (*fullname); | |
992 | ||
993 | xfree (*fullname); | |
994 | *fullname = lpath; | |
995 | return result; | |
996 | } | |
997 | ||
c378eb4e | 998 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 999 | xfree (*fullname); |
57c22c6c | 1000 | *fullname = NULL; |
c906108c SS |
1001 | } |
1002 | ||
57c22c6c | 1003 | if (dirname != NULL) |
c906108c | 1004 | { |
2f61ca93 JB |
1005 | /* If necessary, rewrite the compilation directory name according |
1006 | to the source path substitution rules specified by the user. */ | |
1007 | ||
1008 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1009 | ||
1010 | if (rewritten_dirname != NULL) | |
1011 | { | |
1012 | make_cleanup (xfree, rewritten_dirname); | |
1013 | dirname = rewritten_dirname; | |
1014 | } | |
1015 | ||
c378eb4e MS |
1016 | /* Replace a path entry of $cdir with the compilation directory |
1017 | name. */ | |
c906108c SS |
1018 | #define cdir_len 5 |
1019 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1020 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1021 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1022 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1023 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1024 | { |
1025 | int len; | |
1026 | ||
1027 | path = (char *) | |
57c22c6c | 1028 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1029 | len = p - source_path; |
c5aa993b | 1030 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1031 | strcpy (path + len, dirname); /* new stuff */ |
1032 | strcat (path + len, source_path + len + cdir_len); /* After | |
1033 | $cdir */ | |
c906108c SS |
1034 | } |
1035 | } | |
8da2a1df DJ |
1036 | |
1037 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1038 | { |
8da2a1df DJ |
1039 | /* If filename is absolute path, try the source path |
1040 | substitution on it. */ | |
56163ce1 JB |
1041 | char *rewritten_filename = rewrite_source_path (filename); |
1042 | ||
1043 | if (rewritten_filename != NULL) | |
1044 | { | |
1045 | make_cleanup (xfree, rewritten_filename); | |
1046 | filename = rewritten_filename; | |
1047 | } | |
1048 | } | |
c906108c | 1049 | |
fbdebf46 | 1050 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1051 | if (result < 0) |
1052 | { | |
c378eb4e | 1053 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1054 | p = lbasename (filename); |
1055 | if (p != filename) | |
fbdebf46 | 1056 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1057 | } |
c906108c | 1058 | |
c906108c SS |
1059 | return result; |
1060 | } | |
1061 | ||
57c22c6c BR |
1062 | /* Open a source file given a symtab S. Returns a file descriptor or |
1063 | negative number for error. | |
1064 | ||
c378eb4e | 1065 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1066 | |
1067 | int | |
1068 | open_source_file (struct symtab *s) | |
1069 | { | |
5e987968 AS |
1070 | if (!s) |
1071 | return -1; | |
57c22c6c | 1072 | |
e2357892 | 1073 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1074 | } |
1075 | ||
1076 | /* Finds the fullname that a symtab represents. | |
c906108c | 1077 | |
f35a17b5 JK |
1078 | This functions finds the fullname and saves it in s->fullname. |
1079 | It will also return the value. | |
57c22c6c BR |
1080 | |
1081 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1082 | the expected fullname is used. Therefore the files does not have to |
1083 | exist. */ | |
256f06f3 | 1084 | |
0b0865da | 1085 | const char * |
57c22c6c | 1086 | symtab_to_fullname (struct symtab *s) |
c906108c | 1087 | { |
256f06f3 DE |
1088 | /* Use cached copy if we have it. |
1089 | We rely on forget_cached_source_info being called appropriately | |
1090 | to handle cases like the file being moved. */ | |
f35a17b5 | 1091 | if (s->fullname == NULL) |
5e987968 | 1092 | { |
f35a17b5 JK |
1093 | int fd = find_and_open_source (s->filename, s->dirname, &s->fullname); |
1094 | ||
1095 | if (fd >= 0) | |
1096 | close (fd); | |
f35a17b5 | 1097 | else |
f0a4b570 JK |
1098 | { |
1099 | char *fullname; | |
1100 | struct cleanup *back_to; | |
1101 | ||
1102 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1103 | should report the pathname where GDB tried to find the file. */ | |
1104 | ||
57b3c00c | 1105 | if (s->dirname == NULL || IS_ABSOLUTE_PATH (s->filename)) |
f0a4b570 JK |
1106 | fullname = xstrdup (s->filename); |
1107 | else | |
1108 | fullname = concat (s->dirname, SLASH_STRING, s->filename, NULL); | |
1109 | ||
1110 | back_to = make_cleanup (xfree, fullname); | |
1111 | s->fullname = rewrite_source_path (fullname); | |
1112 | if (s->fullname == NULL) | |
1113 | s->fullname = xstrdup (fullname); | |
1114 | do_cleanups (back_to); | |
1115 | } | |
f35a17b5 | 1116 | } |
c906108c | 1117 | |
f35a17b5 | 1118 | return s->fullname; |
57c22c6c | 1119 | } |
5e987968 | 1120 | \f |
c906108c SS |
1121 | /* Create and initialize the table S->line_charpos that records |
1122 | the positions of the lines in the source file, which is assumed | |
1123 | to be open on descriptor DESC. | |
1124 | All set S->nlines to the number of such lines. */ | |
1125 | ||
1126 | void | |
fba45db2 | 1127 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1128 | { |
1129 | struct stat st; | |
52f0bd74 | 1130 | char *data, *p, *end; |
c906108c SS |
1131 | int nlines = 0; |
1132 | int lines_allocated = 1000; | |
1133 | int *line_charpos; | |
1134 | long mtime = 0; | |
1135 | int size; | |
1136 | ||
be8ca11b | 1137 | gdb_assert (s); |
7936743b | 1138 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1139 | if (fstat (desc, &st) < 0) |
1140 | perror_with_name (s->filename); | |
1141 | ||
be8ca11b | 1142 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1143 | mtime = s->objfile->mtime; |
c906108c | 1144 | else if (exec_bfd) |
c04ea773 | 1145 | mtime = exec_bfd_mtime; |
c906108c SS |
1146 | |
1147 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1148 | warning (_("Source file is more recent than executable.")); |
c906108c | 1149 | |
c906108c SS |
1150 | { |
1151 | struct cleanup *old_cleanups; | |
1152 | ||
1153 | /* st_size might be a large type, but we only support source files whose | |
1154 | size fits in an int. */ | |
1155 | size = (int) st.st_size; | |
1156 | ||
1157 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1158 | run into various kinds of limits on stack size. */ | |
1159 | data = (char *) xmalloc (size); | |
b8c9b27d | 1160 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1161 | |
1162 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1163 | size = myread (desc, data, size); | |
1164 | if (size < 0) | |
1165 | perror_with_name (s->filename); | |
1166 | end = data + size; | |
1167 | p = data; | |
1168 | line_charpos[0] = 0; | |
1169 | nlines = 1; | |
1170 | while (p != end) | |
1171 | { | |
1172 | if (*p++ == '\n' | |
c5aa993b | 1173 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1174 | && p != end) |
1175 | { | |
1176 | if (nlines == lines_allocated) | |
1177 | { | |
1178 | lines_allocated *= 2; | |
1179 | line_charpos = | |
0efffb96 AC |
1180 | (int *) xrealloc ((char *) line_charpos, |
1181 | sizeof (int) * lines_allocated); | |
c906108c SS |
1182 | } |
1183 | line_charpos[nlines++] = p - data; | |
1184 | } | |
1185 | } | |
1186 | do_cleanups (old_cleanups); | |
1187 | } | |
d4d4db8a | 1188 | |
c906108c SS |
1189 | s->nlines = nlines; |
1190 | s->line_charpos = | |
0efffb96 | 1191 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1192 | |
1193 | } | |
1194 | ||
c906108c | 1195 | \f |
c5aa993b | 1196 | |
c906108c SS |
1197 | /* Get full pathname and line number positions for a symtab. |
1198 | Return nonzero if line numbers may have changed. | |
1199 | Set *FULLNAME to actual name of the file as found by `openp', | |
1200 | or to 0 if the file is not found. */ | |
1201 | ||
1202 | static int | |
fba45db2 | 1203 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1204 | { |
52f0bd74 | 1205 | int desc, linenums_changed = 0; |
9fe4a216 | 1206 | struct cleanup *cleanups; |
c5aa993b | 1207 | |
c906108c SS |
1208 | desc = open_source_file (s); |
1209 | if (desc < 0) | |
1210 | { | |
1211 | if (fullname) | |
1212 | *fullname = NULL; | |
1213 | return 0; | |
c5aa993b | 1214 | } |
9fe4a216 | 1215 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1216 | if (fullname) |
1217 | *fullname = s->fullname; | |
c5aa993b JM |
1218 | if (s->line_charpos == 0) |
1219 | linenums_changed = 1; | |
1220 | if (linenums_changed) | |
1221 | find_source_lines (s, desc); | |
9fe4a216 | 1222 | do_cleanups (cleanups); |
c906108c SS |
1223 | return linenums_changed; |
1224 | } | |
1225 | ||
1226 | /* Print text describing the full name of the source file S | |
1227 | and the line number LINE and its corresponding character position. | |
1228 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1229 | can easily find it. | |
1230 | ||
1231 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1232 | ||
1233 | Return 1 if successful, 0 if could not find the file. */ | |
1234 | ||
1235 | int | |
fba45db2 KB |
1236 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1237 | CORE_ADDR pc) | |
c906108c SS |
1238 | { |
1239 | if (s->line_charpos == 0) | |
c5aa993b | 1240 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1241 | if (s->fullname == 0) |
1242 | return 0; | |
1243 | if (line > s->nlines) | |
1244 | /* Don't index off the end of the line_charpos array. */ | |
1245 | return 0; | |
1246 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1247 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1248 | |
1249 | current_source_line = line; | |
1250 | first_line_listed = line; | |
1251 | last_line_listed = line; | |
1252 | current_source_symtab = s; | |
1253 | return 1; | |
1254 | } | |
c906108c | 1255 | \f |
c5aa993b | 1256 | |
c906108c | 1257 | /* Print source lines from the file of symtab S, |
c378eb4e | 1258 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1259 | |
1260 | static void | |
dfaae886 MM |
1261 | print_source_lines_base (struct symtab *s, int line, int stopline, |
1262 | enum print_source_lines_flags flags) | |
c906108c | 1263 | { |
52f0bd74 AC |
1264 | int c; |
1265 | int desc; | |
f4dfd9c0 | 1266 | int noprint = 0; |
52f0bd74 | 1267 | FILE *stream; |
c906108c | 1268 | int nlines = stopline - line; |
7c8a8b04 | 1269 | struct cleanup *cleanup; |
79a45e25 | 1270 | struct ui_out *uiout = current_uiout; |
c906108c | 1271 | |
c378eb4e | 1272 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1273 | current_source_symtab = s; |
1274 | current_source_line = line; | |
1275 | first_line_listed = line; | |
1276 | ||
3e43a32a | 1277 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1278 | number. */ |
8b93c638 JM |
1279 | if (ui_out_test_flags (uiout, ui_source_list)) |
1280 | { | |
c378eb4e | 1281 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1282 | if ((s != last_source_visited) || (!last_source_error)) |
1283 | { | |
1284 | last_source_visited = s; | |
1285 | desc = open_source_file (s); | |
1286 | } | |
1287 | else | |
1288 | { | |
1289 | desc = last_source_error; | |
dfaae886 | 1290 | flags |= PRINT_SOURCE_LINES_NOERROR; |
c5aa993b | 1291 | } |
8b93c638 JM |
1292 | } |
1293 | else | |
1294 | { | |
f4dfd9c0 | 1295 | desc = last_source_error; |
dfaae886 | 1296 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1297 | noprint = 1; |
8b93c638 | 1298 | } |
c906108c | 1299 | |
f4dfd9c0 | 1300 | if (desc < 0 || noprint) |
c906108c SS |
1301 | { |
1302 | last_source_error = desc; | |
1303 | ||
dfaae886 | 1304 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1305 | { |
08850b56 PM |
1306 | int len = strlen (s->filename) + 100; |
1307 | char *name = alloca (len); | |
1308 | ||
1309 | xsnprintf (name, len, "%d\t%s", line, s->filename); | |
c906108c SS |
1310 | print_sys_errmsg (name, errno); |
1311 | } | |
1312 | else | |
fc0ae648 AB |
1313 | { |
1314 | ui_out_field_int (uiout, "line", line); | |
1315 | ui_out_text (uiout, "\tin "); | |
1316 | ui_out_field_string (uiout, "file", s->filename); | |
ed8a1c2d AB |
1317 | if (ui_out_is_mi_like_p (uiout)) |
1318 | { | |
1319 | const char *fullname = symtab_to_fullname (s); | |
1320 | ||
f35a17b5 | 1321 | ui_out_field_string (uiout, "fullname", fullname); |
ed8a1c2d | 1322 | } |
fc0ae648 AB |
1323 | ui_out_text (uiout, "\n"); |
1324 | } | |
c906108c SS |
1325 | |
1326 | return; | |
1327 | } | |
1328 | ||
1329 | last_source_error = 0; | |
1330 | ||
1331 | if (s->line_charpos == 0) | |
1332 | find_source_lines (s, desc); | |
1333 | ||
1334 | if (line < 1 || line > s->nlines) | |
1335 | { | |
1336 | close (desc); | |
8a3fe4f8 | 1337 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1338 | line, s->filename, s->nlines); |
1339 | } | |
1340 | ||
1341 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1342 | { | |
1343 | close (desc); | |
1344 | perror_with_name (s->filename); | |
1345 | } | |
1346 | ||
1347 | stream = fdopen (desc, FDOPEN_MODE); | |
1348 | clearerr (stream); | |
7c8a8b04 | 1349 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1350 | |
1351 | while (nlines-- > 0) | |
1352 | { | |
8b93c638 JM |
1353 | char buf[20]; |
1354 | ||
1355 | c = fgetc (stream); | |
1356 | if (c == EOF) | |
1357 | break; | |
1358 | last_line_listed = current_source_line; | |
4cd29721 MM |
1359 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1360 | { | |
1361 | ui_out_text (uiout, s->filename); | |
1362 | ui_out_text (uiout, ":"); | |
1363 | } | |
08850b56 | 1364 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
8b93c638 JM |
1365 | ui_out_text (uiout, buf); |
1366 | do | |
1367 | { | |
1368 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1369 | { | |
08850b56 | 1370 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
8b93c638 JM |
1371 | ui_out_text (uiout, buf); |
1372 | } | |
1373 | else if (c == 0177) | |
1374 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1375 | else if (c == '\r') |
1376 | { | |
1377 | /* Skip a \r character, but only before a \n. */ | |
1378 | int c1 = fgetc (stream); | |
1379 | ||
1380 | if (c1 != '\n') | |
1381 | printf_filtered ("^%c", c + 0100); | |
1382 | if (c1 != EOF) | |
1383 | ungetc (c1, stream); | |
1384 | } | |
8b93c638 JM |
1385 | else |
1386 | { | |
08850b56 | 1387 | xsnprintf (buf, sizeof (buf), "%c", c); |
8b93c638 JM |
1388 | ui_out_text (uiout, buf); |
1389 | } | |
1390 | } | |
1391 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1392 | } |
1393 | ||
7c8a8b04 | 1394 | do_cleanups (cleanup); |
c906108c SS |
1395 | } |
1396 | \f | |
1397 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1398 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1399 | not the command line version, then the source is shown in the source |
c378eb4e | 1400 | window otherwise it is simply printed. */ |
c906108c | 1401 | |
c5aa993b | 1402 | void |
dfaae886 MM |
1403 | print_source_lines (struct symtab *s, int line, int stopline, |
1404 | enum print_source_lines_flags flags) | |
c906108c | 1405 | { |
dfaae886 | 1406 | print_source_lines_base (s, line, stopline, flags); |
c906108c SS |
1407 | } |
1408 | \f | |
c906108c SS |
1409 | /* Print info on range of pc's in a specified line. */ |
1410 | ||
1411 | static void | |
fba45db2 | 1412 | line_info (char *arg, int from_tty) |
c906108c SS |
1413 | { |
1414 | struct symtabs_and_lines sals; | |
1415 | struct symtab_and_line sal; | |
1416 | CORE_ADDR start_pc, end_pc; | |
1417 | int i; | |
f8eba3c6 | 1418 | struct cleanup *cleanups; |
c906108c | 1419 | |
fe39c653 | 1420 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1421 | |
1422 | if (arg == 0) | |
1423 | { | |
1424 | sal.symtab = current_source_symtab; | |
f8eba3c6 | 1425 | sal.pspace = current_program_space; |
c906108c SS |
1426 | sal.line = last_line_listed; |
1427 | sals.nelts = 1; | |
1428 | sals.sals = (struct symtab_and_line *) | |
1429 | xmalloc (sizeof (struct symtab_and_line)); | |
1430 | sals.sals[0] = sal; | |
1431 | } | |
1432 | else | |
1433 | { | |
39cf75f7 | 1434 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_LIST_MODE); |
c5aa993b | 1435 | |
c906108c SS |
1436 | dont_repeat (); |
1437 | } | |
1438 | ||
f8eba3c6 TT |
1439 | cleanups = make_cleanup (xfree, sals.sals); |
1440 | ||
c906108c | 1441 | /* C++ More than one line may have been specified, as when the user |
c378eb4e | 1442 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1443 | for (i = 0; i < sals.nelts; i++) |
1444 | { | |
1445 | sal = sals.sals[i]; | |
f8eba3c6 TT |
1446 | if (sal.pspace != current_program_space) |
1447 | continue; | |
c5aa993b | 1448 | |
c906108c SS |
1449 | if (sal.symtab == 0) |
1450 | { | |
5af949e3 UW |
1451 | struct gdbarch *gdbarch = get_current_arch (); |
1452 | ||
a3f17187 | 1453 | printf_filtered (_("No line number information available")); |
c906108c SS |
1454 | if (sal.pc != 0) |
1455 | { | |
1456 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1457 | user about a source line, at least let them have the symbolic |
1458 | address. */ | |
c906108c SS |
1459 | printf_filtered (" for address "); |
1460 | wrap_here (" "); | |
5af949e3 | 1461 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1462 | } |
1463 | else | |
1464 | printf_filtered ("."); | |
1465 | printf_filtered ("\n"); | |
1466 | } | |
1467 | else if (sal.line > 0 | |
1468 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1469 | { | |
5af949e3 UW |
1470 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1471 | ||
c906108c SS |
1472 | if (start_pc == end_pc) |
1473 | { | |
1474 | printf_filtered ("Line %d of \"%s\"", | |
1475 | sal.line, sal.symtab->filename); | |
1476 | wrap_here (" "); | |
1477 | printf_filtered (" is at address "); | |
5af949e3 | 1478 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1479 | wrap_here (" "); |
1480 | printf_filtered (" but contains no code.\n"); | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | printf_filtered ("Line %d of \"%s\"", | |
1485 | sal.line, sal.symtab->filename); | |
1486 | wrap_here (" "); | |
1487 | printf_filtered (" starts at address "); | |
5af949e3 | 1488 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1489 | wrap_here (" "); |
1490 | printf_filtered (" and ends at "); | |
5af949e3 | 1491 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1492 | printf_filtered (".\n"); |
1493 | } | |
1494 | ||
1495 | /* x/i should display this line's code. */ | |
5af949e3 | 1496 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1497 | |
1498 | /* Repeating "info line" should do the following line. */ | |
1499 | last_line_listed = sal.line + 1; | |
1500 | ||
1501 | /* If this is the only line, show the source code. If it could | |
1502 | not find the file, don't do anything special. */ | |
1503 | if (annotation_level && sals.nelts == 1) | |
1504 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1505 | } | |
1506 | else | |
1507 | /* Is there any case in which we get here, and have an address | |
1508 | which the user would want to see? If we have debugging symbols | |
1509 | and no line numbers? */ | |
a3f17187 | 1510 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1511 | sal.line, sal.symtab->filename); |
1512 | } | |
f8eba3c6 | 1513 | do_cleanups (cleanups); |
c906108c SS |
1514 | } |
1515 | \f | |
1516 | /* Commands to search the source file for a regexp. */ | |
1517 | ||
c906108c | 1518 | static void |
fba45db2 | 1519 | forward_search_command (char *regex, int from_tty) |
c906108c | 1520 | { |
52f0bd74 AC |
1521 | int c; |
1522 | int desc; | |
1523 | FILE *stream; | |
c906108c SS |
1524 | int line; |
1525 | char *msg; | |
9fe4a216 | 1526 | struct cleanup *cleanups; |
c906108c | 1527 | |
c906108c | 1528 | line = last_line_listed + 1; |
c906108c SS |
1529 | |
1530 | msg = (char *) re_comp (regex); | |
1531 | if (msg) | |
8a3fe4f8 | 1532 | error (("%s"), msg); |
c906108c SS |
1533 | |
1534 | if (current_source_symtab == 0) | |
1535 | select_source_symtab (0); | |
1536 | ||
1537 | desc = open_source_file (current_source_symtab); | |
1538 | if (desc < 0) | |
1539 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1540 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1541 | |
1542 | if (current_source_symtab->line_charpos == 0) | |
1543 | find_source_lines (current_source_symtab, desc); | |
1544 | ||
1545 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1546 | error (_("Expression not found")); |
c906108c SS |
1547 | |
1548 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1549 | perror_with_name (current_source_symtab->filename); |
c906108c | 1550 | |
9fe4a216 | 1551 | discard_cleanups (cleanups); |
c906108c SS |
1552 | stream = fdopen (desc, FDOPEN_MODE); |
1553 | clearerr (stream); | |
9fe4a216 | 1554 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1555 | while (1) |
1556 | { | |
1557 | static char *buf = NULL; | |
aa1ee363 | 1558 | char *p; |
c5aa993b JM |
1559 | int cursize, newsize; |
1560 | ||
1561 | cursize = 256; | |
1562 | buf = xmalloc (cursize); | |
1563 | p = buf; | |
1564 | ||
1565 | c = getc (stream); | |
1566 | if (c == EOF) | |
1567 | break; | |
1568 | do | |
c906108c | 1569 | { |
c5aa993b JM |
1570 | *p++ = c; |
1571 | if (p - buf == cursize) | |
1572 | { | |
1573 | newsize = cursize + cursize / 2; | |
1574 | buf = xrealloc (buf, newsize); | |
1575 | p = buf + cursize; | |
1576 | cursize = newsize; | |
1577 | } | |
c906108c | 1578 | } |
c5aa993b | 1579 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1580 | |
7be570e7 JM |
1581 | /* Remove the \r, if any, at the end of the line, otherwise |
1582 | regular expressions that end with $ or \n won't work. */ | |
1583 | if (p - buf > 1 && p[-2] == '\r') | |
1584 | { | |
1585 | p--; | |
1586 | p[-1] = '\n'; | |
1587 | } | |
7be570e7 | 1588 | |
c378eb4e | 1589 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1590 | *p = 0; |
1591 | if (re_exec (buf) > 0) | |
1592 | { | |
c378eb4e | 1593 | /* Match! */ |
e681b284 | 1594 | do_cleanups (cleanups); |
c5aa993b | 1595 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1596 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1597 | current_source_line = max (line - lines_to_list / 2, 1); |
1598 | return; | |
1599 | } | |
1600 | line++; | |
1601 | } | |
c906108c | 1602 | |
a3f17187 | 1603 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1604 | do_cleanups (cleanups); |
c906108c SS |
1605 | } |
1606 | ||
c906108c | 1607 | static void |
fba45db2 | 1608 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1609 | { |
52f0bd74 AC |
1610 | int c; |
1611 | int desc; | |
1612 | FILE *stream; | |
c906108c SS |
1613 | int line; |
1614 | char *msg; | |
9fe4a216 | 1615 | struct cleanup *cleanups; |
063190b6 | 1616 | |
c906108c | 1617 | line = last_line_listed - 1; |
c906108c SS |
1618 | |
1619 | msg = (char *) re_comp (regex); | |
1620 | if (msg) | |
8a3fe4f8 | 1621 | error (("%s"), msg); |
c906108c SS |
1622 | |
1623 | if (current_source_symtab == 0) | |
1624 | select_source_symtab (0); | |
1625 | ||
1626 | desc = open_source_file (current_source_symtab); | |
1627 | if (desc < 0) | |
1628 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1629 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1630 | |
1631 | if (current_source_symtab->line_charpos == 0) | |
1632 | find_source_lines (current_source_symtab, desc); | |
1633 | ||
1634 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1635 | error (_("Expression not found")); |
c906108c SS |
1636 | |
1637 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1638 | perror_with_name (current_source_symtab->filename); |
c906108c | 1639 | |
9fe4a216 | 1640 | discard_cleanups (cleanups); |
c906108c SS |
1641 | stream = fdopen (desc, FDOPEN_MODE); |
1642 | clearerr (stream); | |
9fe4a216 | 1643 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1644 | while (line > 1) |
1645 | { | |
c378eb4e MS |
1646 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1647 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1648 | char *p = buf; |
c906108c SS |
1649 | |
1650 | c = getc (stream); | |
1651 | if (c == EOF) | |
1652 | break; | |
c5aa993b JM |
1653 | do |
1654 | { | |
1655 | *p++ = c; | |
1656 | } | |
1657 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1658 | |
7be570e7 JM |
1659 | /* Remove the \r, if any, at the end of the line, otherwise |
1660 | regular expressions that end with $ or \n won't work. */ | |
1661 | if (p - buf > 1 && p[-2] == '\r') | |
1662 | { | |
1663 | p--; | |
1664 | p[-1] = '\n'; | |
1665 | } | |
7be570e7 | 1666 | |
c906108c SS |
1667 | /* We now have a source line in buf; null terminate and match. */ |
1668 | *p = 0; | |
1669 | if (re_exec (buf) > 0) | |
1670 | { | |
c378eb4e | 1671 | /* Match! */ |
e681b284 | 1672 | do_cleanups (cleanups); |
c5aa993b | 1673 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1674 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1675 | current_source_line = max (line - lines_to_list / 2, 1); |
1676 | return; | |
1677 | } | |
1678 | line--; | |
1679 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1680 | { | |
e681b284 | 1681 | do_cleanups (cleanups); |
c906108c SS |
1682 | perror_with_name (current_source_symtab->filename); |
1683 | } | |
1684 | } | |
1685 | ||
a3f17187 | 1686 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1687 | do_cleanups (cleanups); |
c906108c SS |
1688 | return; |
1689 | } | |
2f61ca93 JB |
1690 | |
1691 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1692 | ||
1693 | static void | |
1694 | strip_trailing_directory_separator (char *path) | |
1695 | { | |
1696 | const int last = strlen (path) - 1; | |
1697 | ||
1698 | if (last < 0) | |
1699 | return; /* No stripping is needed if PATH is the empty string. */ | |
1700 | ||
1701 | if (IS_DIR_SEPARATOR (path[last])) | |
1702 | path[last] = '\0'; | |
1703 | } | |
1704 | ||
1705 | /* Return the path substitution rule that matches FROM. | |
1706 | Return NULL if no rule matches. */ | |
1707 | ||
1708 | static struct substitute_path_rule * | |
1709 | find_substitute_path_rule (const char *from) | |
1710 | { | |
1711 | struct substitute_path_rule *rule = substitute_path_rules; | |
1712 | ||
1713 | while (rule != NULL) | |
1714 | { | |
1715 | if (FILENAME_CMP (rule->from, from) == 0) | |
1716 | return rule; | |
1717 | rule = rule->next; | |
1718 | } | |
1719 | ||
1720 | return NULL; | |
1721 | } | |
1722 | ||
1723 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1724 | The new rule will replace FROM into TO. */ | |
1725 | ||
29b0e8a2 | 1726 | void |
2f61ca93 JB |
1727 | add_substitute_path_rule (char *from, char *to) |
1728 | { | |
1729 | struct substitute_path_rule *rule; | |
1730 | struct substitute_path_rule *new_rule; | |
1731 | ||
1732 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1733 | new_rule->from = xstrdup (from); | |
1734 | new_rule->to = xstrdup (to); | |
1735 | new_rule->next = NULL; | |
1736 | ||
1737 | /* If the list of rules are empty, then insert the new rule | |
1738 | at the head of the list. */ | |
1739 | ||
1740 | if (substitute_path_rules == NULL) | |
1741 | { | |
1742 | substitute_path_rules = new_rule; | |
1743 | return; | |
1744 | } | |
1745 | ||
1746 | /* Otherwise, skip to the last rule in our list and then append | |
1747 | the new rule. */ | |
1748 | ||
1749 | rule = substitute_path_rules; | |
1750 | while (rule->next != NULL) | |
1751 | rule = rule->next; | |
1752 | ||
1753 | rule->next = new_rule; | |
1754 | } | |
1755 | ||
1756 | /* Remove the given source path substitution rule from the current list | |
1757 | of rules. The memory allocated for that rule is also deallocated. */ | |
1758 | ||
1759 | static void | |
1760 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1761 | { | |
1762 | if (rule == substitute_path_rules) | |
1763 | substitute_path_rules = rule->next; | |
1764 | else | |
1765 | { | |
1766 | struct substitute_path_rule *prev = substitute_path_rules; | |
1767 | ||
1768 | while (prev != NULL && prev->next != rule) | |
1769 | prev = prev->next; | |
1770 | ||
1771 | gdb_assert (prev != NULL); | |
1772 | ||
1773 | prev->next = rule->next; | |
1774 | } | |
1775 | ||
1776 | xfree (rule->from); | |
1777 | xfree (rule->to); | |
1778 | xfree (rule); | |
1779 | } | |
1780 | ||
1781 | /* Implement the "show substitute-path" command. */ | |
1782 | ||
1783 | static void | |
1784 | show_substitute_path_command (char *args, int from_tty) | |
1785 | { | |
1786 | struct substitute_path_rule *rule = substitute_path_rules; | |
1787 | char **argv; | |
1788 | char *from = NULL; | |
1789 | ||
d1a41061 | 1790 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1791 | make_cleanup_freeargv (argv); |
1792 | ||
1793 | /* We expect zero or one argument. */ | |
1794 | ||
1795 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1796 | error (_("Too many arguments in command")); | |
1797 | ||
1798 | if (argv != NULL && argv[0] != NULL) | |
1799 | from = argv[0]; | |
1800 | ||
1801 | /* Print the substitution rules. */ | |
1802 | ||
1803 | if (from != NULL) | |
1804 | printf_filtered | |
1805 | (_("Source path substitution rule matching `%s':\n"), from); | |
1806 | else | |
1807 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1808 | ||
1809 | while (rule != NULL) | |
1810 | { | |
1811 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1812 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1813 | rule = rule->next; | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | /* Implement the "unset substitute-path" command. */ | |
1818 | ||
1819 | static void | |
1820 | unset_substitute_path_command (char *args, int from_tty) | |
1821 | { | |
1822 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1823 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1824 | char *from = NULL; |
1825 | int rule_found = 0; | |
1826 | ||
1827 | /* This function takes either 0 or 1 argument. */ | |
1828 | ||
77accacd | 1829 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1830 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1831 | error (_("Incorrect usage, too many arguments in command")); | |
1832 | ||
1833 | if (argv != NULL && argv[0] != NULL) | |
1834 | from = argv[0]; | |
1835 | ||
1836 | /* If the user asked for all the rules to be deleted, ask him | |
1837 | to confirm and give him a chance to abort before the action | |
1838 | is performed. */ | |
1839 | ||
1840 | if (from == NULL | |
1841 | && !query (_("Delete all source path substitution rules? "))) | |
1842 | error (_("Canceled")); | |
1843 | ||
1844 | /* Delete the rule matching the argument. No argument means that | |
1845 | all rules should be deleted. */ | |
1846 | ||
1847 | while (rule != NULL) | |
1848 | { | |
1849 | struct substitute_path_rule *next = rule->next; | |
1850 | ||
1851 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1852 | { | |
1853 | delete_substitute_path_rule (rule); | |
1854 | rule_found = 1; | |
1855 | } | |
1856 | ||
1857 | rule = next; | |
1858 | } | |
1859 | ||
1860 | /* If the user asked for a specific rule to be deleted but | |
1861 | we could not find it, then report an error. */ | |
1862 | ||
1863 | if (from != NULL && !rule_found) | |
1864 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1865 | |
1866 | forget_cached_source_info (); | |
2f61ca93 JB |
1867 | } |
1868 | ||
1869 | /* Add a new source path substitution rule. */ | |
1870 | ||
1871 | static void | |
1872 | set_substitute_path_command (char *args, int from_tty) | |
1873 | { | |
2f61ca93 JB |
1874 | char **argv; |
1875 | struct substitute_path_rule *rule; | |
1876 | ||
d1a41061 | 1877 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1878 | make_cleanup_freeargv (argv); |
1879 | ||
1880 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1881 | error (_("Incorrect usage, too few arguments in command")); | |
1882 | ||
1883 | if (argv[2] != NULL) | |
1884 | error (_("Incorrect usage, too many arguments in command")); | |
1885 | ||
1886 | if (*(argv[0]) == '\0') | |
1887 | error (_("First argument must be at least one character long")); | |
1888 | ||
1889 | /* Strip any trailing directory separator character in either FROM | |
1890 | or TO. The substitution rule already implicitly contains them. */ | |
1891 | strip_trailing_directory_separator (argv[0]); | |
1892 | strip_trailing_directory_separator (argv[1]); | |
1893 | ||
1894 | /* If a rule with the same "from" was previously defined, then | |
1895 | delete it. This new rule replaces it. */ | |
1896 | ||
1897 | rule = find_substitute_path_rule (argv[0]); | |
1898 | if (rule != NULL) | |
1899 | delete_substitute_path_rule (rule); | |
1900 | ||
1901 | /* Insert the new substitution rule. */ | |
1902 | ||
1903 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1904 | forget_cached_source_info (); |
2f61ca93 JB |
1905 | } |
1906 | ||
c906108c SS |
1907 | \f |
1908 | void | |
fba45db2 | 1909 | _initialize_source (void) |
c906108c SS |
1910 | { |
1911 | struct cmd_list_element *c; | |
433759f7 | 1912 | |
c906108c SS |
1913 | current_source_symtab = 0; |
1914 | init_source_path (); | |
1915 | ||
1916 | /* The intention is to use POSIX Basic Regular Expressions. | |
1917 | Always use the GNU regex routine for consistency across all hosts. | |
1918 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1919 | just an approximation. */ | |
1920 | re_set_syntax (RE_SYNTAX_GREP); | |
1921 | ||
1a966eab AC |
1922 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1923 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1924 | Forget cached info on source file locations and line positions.\n\ |
1925 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1926 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1927 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1928 | &cmdlist); |
1929 | ||
1930 | if (dbx_commands) | |
c5aa993b | 1931 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1932 | |
5ba2abeb | 1933 | set_cmd_completer (c, filename_completer); |
c906108c | 1934 | |
99e7ae30 DE |
1935 | add_setshow_optional_filename_cmd ("directories", |
1936 | class_files, | |
1937 | &source_path, | |
1938 | _("\ | |
1939 | Set the search path for finding source files."), | |
1940 | _("\ | |
1941 | Show the search path for finding source files."), | |
1942 | _("\ | |
c906108c | 1943 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1944 | $cdir in the path means the compilation directory of the source file.\n\ |
1945 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1946 | appending these directories if necessary.\n\ | |
1947 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1948 | set_directories_command, | |
1949 | show_directories_command, | |
1950 | &setlist, &showlist); | |
c906108c SS |
1951 | |
1952 | if (xdb_commands) | |
1953 | { | |
c5aa993b | 1954 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 1955 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 1956 | Current search path for finding source files.\n\ |
c906108c | 1957 | $cwd in the path means the current working directory.\n\ |
1a966eab | 1958 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 1959 | &cmdlist); |
c906108c SS |
1960 | } |
1961 | ||
1962 | add_info ("source", source_info, | |
1bedd215 | 1963 | _("Information about the current source file.")); |
c906108c | 1964 | |
1bedd215 AC |
1965 | add_info ("line", line_info, _("\ |
1966 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
1967 | Line can be specified as\n\ |
1968 | LINENUM, to list around that line in current file,\n\ | |
1969 | FILE:LINENUM, to list around that line in that file,\n\ | |
1970 | FUNCTION, to list around beginning of that function,\n\ | |
1971 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1972 | Default is to describe the last source line that was listed.\n\n\ |
1973 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1974 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1975 | The address is also stored as the value of \"$_\".")); |
c906108c | 1976 | |
1bedd215 AC |
1977 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1978 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1979 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1980 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1981 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1982 | |
1bedd215 AC |
1983 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1984 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1985 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1986 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
1987 | |
1988 | if (xdb_commands) | |
1989 | { | |
c5aa993b JM |
1990 | add_com_alias ("/", "forward-search", class_files, 0); |
1991 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1992 | } |
1993 | ||
6fc1c773 YQ |
1994 | add_setshow_zuinteger_unlimited_cmd ("listsize", class_support, |
1995 | &lines_to_list, _("\ | |
35096d9d AC |
1996 | Set number of source lines gdb will list by default."), _("\ |
1997 | Show number of source lines gdb will list by default."), NULL, | |
6fc1c773 YQ |
1998 | NULL, show_lines_to_list, |
1999 | &setlist, &showlist); | |
2f61ca93 JB |
2000 | |
2001 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2002 | _("\ | |
7ef2b397 JB |
2003 | Usage: set substitute-path FROM TO\n\ |
2004 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2005 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2006 | is replaced by the new one."), | |
2007 | &setlist); | |
2f61ca93 JB |
2008 | |
2009 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2010 | _("\ | |
7ef2b397 JB |
2011 | Usage: unset substitute-path [FROM]\n\ |
2012 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2013 | is not specified, all substituting rules are deleted.\n\ | |
2014 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2015 | &unsetlist); |
2016 | ||
2017 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2018 | _("\ |
2019 | Usage: show substitute-path [FROM]\n\ | |
2020 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2021 | is not specified, print all substitution rules."), | |
2f61ca93 | 2022 | &showlist); |
c906108c | 2023 | } |