Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
6aba47ca | 2 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
7b6bb8da | 4 | 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
5af949e3 | 22 | #include "arch-utils.h" |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "command.h" | |
c2c6d25f | 27 | #include "source.h" |
c906108c SS |
28 | #include "gdbcmd.h" |
29 | #include "frame.h" | |
30 | #include "value.h" | |
2f61ca93 | 31 | #include "gdb_assert.h" |
c906108c SS |
32 | |
33 | #include <sys/types.h> | |
34 | #include "gdb_string.h" | |
35 | #include "gdb_stat.h" | |
36 | #include <fcntl.h> | |
c906108c | 37 | #include "gdbcore.h" |
88987551 | 38 | #include "gdb_regex.h" |
c906108c SS |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
41 | #include "annotate.h" | |
42 | #include "gdbtypes.h" | |
c5f0f3d0 | 43 | #include "linespec.h" |
fe4e3eb8 | 44 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 45 | #include "completer.h" |
8b93c638 | 46 | #include "ui-out.h" |
dbda9972 | 47 | #include "readline/readline.h" |
c906108c | 48 | |
ccefe4c4 TT |
49 | #include "psymtab.h" |
50 | ||
3e3a28f1 | 51 | |
c906108c SS |
52 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
53 | #define FDOPEN_MODE FOPEN_RB | |
54 | ||
c906108c SS |
55 | /* Prototypes for exported functions. */ |
56 | ||
a14ed312 | 57 | void _initialize_source (void); |
c906108c SS |
58 | |
59 | /* Prototypes for local functions. */ | |
60 | ||
a14ed312 | 61 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 62 | |
a14ed312 | 63 | static void reverse_search_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void forward_search_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void line_info (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void source_info (char *, int); |
c906108c | 70 | |
c906108c SS |
71 | /* Path of directories to search for source files. |
72 | Same format as the PATH environment variable's value. */ | |
73 | ||
74 | char *source_path; | |
75 | ||
2f61ca93 JB |
76 | /* Support for source path substitution commands. */ |
77 | ||
78 | struct substitute_path_rule | |
79 | { | |
80 | char *from; | |
81 | char *to; | |
82 | struct substitute_path_rule *next; | |
83 | }; | |
84 | ||
85 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
86 | ||
c906108c SS |
87 | /* Symtab of default file for listing lines of. */ |
88 | ||
0378c332 | 89 | static struct symtab *current_source_symtab; |
c906108c SS |
90 | |
91 | /* Default next line to list. */ | |
92 | ||
0378c332 | 93 | static int current_source_line; |
c906108c | 94 | |
6c95b8df PA |
95 | static struct program_space *current_source_pspace; |
96 | ||
c906108c SS |
97 | /* Default number of lines to print with commands like "list". |
98 | This is based on guessing how many long (i.e. more than chars_per_line | |
99 | characters) lines there will be. To be completely correct, "list" | |
100 | and friends should be rewritten to count characters and see where | |
101 | things are wrapping, but that would be a fair amount of work. */ | |
102 | ||
103 | int lines_to_list = 10; | |
920d2a44 AC |
104 | static void |
105 | show_lines_to_list (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, |
109 | _("Number of source lines gdb " | |
110 | "will list by default is %s.\n"), | |
920d2a44 AC |
111 | value); |
112 | } | |
c906108c SS |
113 | |
114 | /* Line number of last line printed. Default for various commands. | |
115 | current_source_line is usually, but not always, the same as this. */ | |
116 | ||
117 | static int last_line_listed; | |
118 | ||
119 | /* First line number listed by last listing command. */ | |
120 | ||
121 | static int first_line_listed; | |
122 | ||
123 | /* Saves the name of the last source file visited and a possible error code. | |
124 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
125 | ||
126 | static struct symtab *last_source_visited = NULL; | |
127 | static int last_source_error = 0; | |
c906108c | 128 | \f |
0378c332 FN |
129 | /* Return the first line listed by print_source_lines. |
130 | Used by command interpreters to request listing from | |
131 | a previous point. */ | |
132 | ||
133 | int | |
134 | get_first_line_listed (void) | |
135 | { | |
136 | return first_line_listed; | |
137 | } | |
138 | ||
139 | /* Return the default number of lines to print with commands like the | |
140 | cli "list". The caller of print_source_lines must use this to | |
141 | calculate the end line and use it in the call to print_source_lines | |
142 | as it does not automatically use this value. */ | |
143 | ||
144 | int | |
145 | get_lines_to_list (void) | |
146 | { | |
147 | return lines_to_list; | |
148 | } | |
149 | ||
150 | /* Return the current source file for listing and next line to list. | |
151 | NOTE: The returned sal pc and end fields are not valid. */ | |
152 | ||
153 | struct symtab_and_line | |
154 | get_current_source_symtab_and_line (void) | |
155 | { | |
245c7f48 | 156 | struct symtab_and_line cursal = { 0 }; |
0378c332 | 157 | |
6c95b8df | 158 | cursal.pspace = current_source_pspace; |
0378c332 FN |
159 | cursal.symtab = current_source_symtab; |
160 | cursal.line = current_source_line; | |
53cb0458 FN |
161 | cursal.pc = 0; |
162 | cursal.end = 0; | |
0378c332 FN |
163 | |
164 | return cursal; | |
165 | } | |
166 | ||
53cb0458 FN |
167 | /* If the current source file for listing is not set, try and get a default. |
168 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 169 | It may err out if a default cannot be determined. |
53cb0458 FN |
170 | We must be cautious about where it is called, as it can recurse as the |
171 | process of determining a new default may call the caller! | |
172 | Use get_current_source_symtab_and_line only to get whatever | |
173 | we have without erroring out or trying to get a default. */ | |
0378c332 | 174 | |
53cb0458 FN |
175 | void |
176 | set_default_source_symtab_and_line (void) | |
0378c332 | 177 | { |
0378c332 | 178 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 179 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 FN |
180 | |
181 | /* Pull in a current source symtab if necessary */ | |
182 | if (current_source_symtab == 0) | |
183 | select_source_symtab (0); | |
0378c332 FN |
184 | } |
185 | ||
186 | /* Return the current default file for listing and next line to list | |
187 | (the returned sal pc and end fields are not valid.) | |
53cb0458 FN |
188 | and set the current default to whatever is in SAL. |
189 | NOTE: The returned sal pc and end fields are not valid. */ | |
0378c332 FN |
190 | |
191 | struct symtab_and_line | |
53cb0458 | 192 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 193 | { |
245c7f48 | 194 | struct symtab_and_line cursal = { 0 }; |
6c95b8df PA |
195 | |
196 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
197 | cursal.symtab = current_source_symtab; |
198 | cursal.line = current_source_line; | |
6c95b8df PA |
199 | cursal.pc = 0; |
200 | cursal.end = 0; | |
0378c332 | 201 | |
6c95b8df | 202 | current_source_pspace = sal->pspace; |
0378c332 FN |
203 | current_source_symtab = sal->symtab; |
204 | current_source_line = sal->line; | |
6c95b8df | 205 | |
0378c332 FN |
206 | return cursal; |
207 | } | |
208 | ||
209 | /* Reset any information stored about a default file and line to print. */ | |
210 | ||
211 | void | |
212 | clear_current_source_symtab_and_line (void) | |
213 | { | |
214 | current_source_symtab = 0; | |
215 | current_source_line = 0; | |
216 | } | |
c5aa993b | 217 | |
c906108c SS |
218 | /* Set the source file default for the "list" command to be S. |
219 | ||
220 | If S is NULL, and we don't have a default, find one. This | |
221 | should only be called when the user actually tries to use the | |
222 | default, since we produce an error if we can't find a reasonable | |
223 | default. Also, since this can cause symbols to be read, doing it | |
224 | before we need to would make things slower than necessary. */ | |
225 | ||
226 | void | |
aa1ee363 | 227 | select_source_symtab (struct symtab *s) |
c906108c SS |
228 | { |
229 | struct symtabs_and_lines sals; | |
230 | struct symtab_and_line sal; | |
c906108c | 231 | struct objfile *ofp; |
c5aa993b | 232 | |
c906108c SS |
233 | if (s) |
234 | { | |
235 | current_source_symtab = s; | |
236 | current_source_line = 1; | |
6c95b8df | 237 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
238 | return; |
239 | } | |
240 | ||
241 | if (current_source_symtab) | |
242 | return; | |
243 | ||
244 | /* Make the default place to list be the function `main' | |
245 | if one exists. */ | |
2570f2b7 | 246 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 247 | { |
51cc5b07 | 248 | sals = decode_line_spec (main_name (), 1); |
c906108c | 249 | sal = sals.sals[0]; |
b8c9b27d | 250 | xfree (sals.sals); |
6c95b8df | 251 | current_source_pspace = sal.pspace; |
c906108c SS |
252 | current_source_symtab = sal.symtab; |
253 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
254 | if (current_source_symtab) | |
c5aa993b | 255 | return; |
c906108c | 256 | } |
c5aa993b | 257 | |
8340a3fb LM |
258 | /* Alright; find the last file in the symtab list (ignoring .h's |
259 | and namespace symtabs). */ | |
c906108c SS |
260 | |
261 | current_source_line = 1; | |
262 | ||
6c95b8df | 263 | ALL_OBJFILES (ofp) |
c906108c | 264 | { |
c5aa993b | 265 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 266 | { |
591e78ff | 267 | const char *name = s->filename; |
c906108c | 268 | int len = strlen (name); |
433759f7 | 269 | |
8340a3fb LM |
270 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
271 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
272 | { |
273 | current_source_pspace = current_program_space; | |
274 | current_source_symtab = s; | |
275 | } | |
c906108c SS |
276 | } |
277 | } | |
6c95b8df | 278 | |
c906108c SS |
279 | if (current_source_symtab) |
280 | return; | |
281 | ||
6c95b8df | 282 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
283 | { |
284 | if (ofp->sf) | |
285 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
286 | if (s) | |
287 | current_source_symtab = s; | |
288 | } | |
c906108c SS |
289 | if (current_source_symtab) |
290 | return; | |
291 | ||
8a3fe4f8 | 292 | error (_("Can't find a default source file")); |
c906108c SS |
293 | } |
294 | \f | |
99e7ae30 DE |
295 | /* Handler for "set directories path-list" command. |
296 | "set dir mumble" doesn't prepend paths, it resets the entire | |
297 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
298 | ||
299 | static void | |
300 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
301 | { | |
302 | /* This is the value that was set. | |
303 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
304 | char *set_path = source_path; | |
305 | ||
306 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
307 | the list by calling init_source_path. If they appear earlier in | |
308 | SET_PATH then mod_path will move them appropriately. | |
309 | mod_path will also remove duplicates. */ | |
310 | init_source_path (); | |
311 | if (*set_path != '\0') | |
312 | mod_path (set_path, &source_path); | |
313 | ||
314 | xfree (set_path); | |
315 | } | |
316 | ||
317 | /* Print the list of source directories. | |
318 | This is used by the "ld" command, so it has the signature of a command | |
319 | function. */ | |
320 | ||
c906108c | 321 | static void |
99e7ae30 | 322 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
323 | { |
324 | puts_filtered ("Source directories searched: "); | |
325 | puts_filtered (source_path); | |
326 | puts_filtered ("\n"); | |
327 | } | |
328 | ||
99e7ae30 DE |
329 | /* Handler for "show directories" command. */ |
330 | ||
331 | static void | |
332 | show_directories_command (struct ui_file *file, int from_tty, | |
333 | struct cmd_list_element *c, const char *value) | |
334 | { | |
335 | show_directories_1 (NULL, from_tty); | |
336 | } | |
337 | ||
c906108c SS |
338 | /* Forget what we learned about line positions in source files, and |
339 | which directories contain them; must check again now since files | |
340 | may be found in a different directory now. */ | |
341 | ||
342 | void | |
fba45db2 | 343 | forget_cached_source_info (void) |
c906108c | 344 | { |
6c95b8df | 345 | struct program_space *pspace; |
52f0bd74 AC |
346 | struct symtab *s; |
347 | struct objfile *objfile; | |
c906108c | 348 | |
6c95b8df PA |
349 | ALL_PSPACES (pspace) |
350 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 351 | { |
c5aa993b | 352 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 353 | { |
c5aa993b | 354 | if (s->line_charpos != NULL) |
c906108c | 355 | { |
2dc74dc1 | 356 | xfree (s->line_charpos); |
c5aa993b | 357 | s->line_charpos = NULL; |
c906108c | 358 | } |
c5aa993b | 359 | if (s->fullname != NULL) |
c906108c | 360 | { |
2dc74dc1 | 361 | xfree (s->fullname); |
c5aa993b | 362 | s->fullname = NULL; |
c906108c SS |
363 | } |
364 | } | |
58d370e0 | 365 | |
ccefe4c4 TT |
366 | if (objfile->sf) |
367 | objfile->sf->qf->forget_cached_source_info (objfile); | |
c906108c | 368 | } |
c4e86dd4 DJ |
369 | |
370 | last_source_visited = NULL; | |
c906108c SS |
371 | } |
372 | ||
373 | void | |
fba45db2 | 374 | init_source_path (void) |
c906108c SS |
375 | { |
376 | char buf[20]; | |
377 | ||
378 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 379 | source_path = xstrdup (buf); |
c906108c SS |
380 | forget_cached_source_info (); |
381 | } | |
382 | ||
383 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 384 | |
c906108c | 385 | void |
fba45db2 | 386 | directory_command (char *dirname, int from_tty) |
c906108c SS |
387 | { |
388 | dont_repeat (); | |
389 | /* FIXME, this goes to "delete dir"... */ | |
390 | if (dirname == 0) | |
391 | { | |
80618b99 | 392 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 393 | { |
b8c9b27d | 394 | xfree (source_path); |
c906108c SS |
395 | init_source_path (); |
396 | } | |
397 | } | |
398 | else | |
399 | { | |
400 | mod_path (dirname, &source_path); | |
c4e86dd4 | 401 | forget_cached_source_info (); |
c906108c SS |
402 | } |
403 | if (from_tty) | |
99e7ae30 | 404 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
405 | } |
406 | ||
13d35ae5 AS |
407 | /* Add a path given with the -d command line switch. |
408 | This will not be quoted so we must not treat spaces as separators. */ | |
409 | ||
410 | void | |
411 | directory_switch (char *dirname, int from_tty) | |
412 | { | |
413 | add_path (dirname, &source_path, 0); | |
414 | } | |
415 | ||
c906108c SS |
416 | /* Add zero or more directories to the front of an arbitrary path. */ |
417 | ||
418 | void | |
fba45db2 | 419 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
420 | { |
421 | add_path (dirname, which_path, 1); | |
422 | } | |
423 | ||
424 | /* Workhorse of mod_path. Takes an extra argument to determine | |
425 | if dirname should be parsed for separators that indicate multiple | |
426 | directories. This allows for interfaces that pre-parse the dirname | |
427 | and allow specification of traditional separator characters such | |
428 | as space or tab. */ | |
429 | ||
430 | void | |
431 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
432 | { |
433 | char *old = *which_path; | |
434 | int prefix = 0; | |
13d35ae5 AS |
435 | char **argv = NULL; |
436 | char *arg; | |
437 | int argv_index = 0; | |
c906108c SS |
438 | |
439 | if (dirname == 0) | |
440 | return; | |
441 | ||
13d35ae5 AS |
442 | if (parse_separators) |
443 | { | |
444 | /* This will properly parse the space and tab separators | |
445 | and any quotes that may exist. DIRNAME_SEPARATOR will | |
446 | be dealt with later. */ | |
d1a41061 | 447 | argv = gdb_buildargv (dirname); |
13d35ae5 AS |
448 | make_cleanup_freeargv (argv); |
449 | ||
13d35ae5 AS |
450 | arg = argv[0]; |
451 | } | |
452 | else | |
453 | { | |
454 | arg = xstrdup (dirname); | |
455 | make_cleanup (xfree, arg); | |
456 | } | |
c906108c SS |
457 | |
458 | do | |
459 | { | |
13d35ae5 | 460 | char *name = arg; |
aa1ee363 | 461 | char *p; |
c906108c SS |
462 | struct stat st; |
463 | ||
464 | { | |
c04e0a08 | 465 | char *separator = NULL; |
c04e0a08 | 466 | |
13d35ae5 AS |
467 | /* Spaces and tabs will have been removed by buildargv(). |
468 | The directories will there be split into a list but | |
469 | each entry may still contain DIRNAME_SEPARATOR. */ | |
c04e0a08 | 470 | if (parse_separators) |
13d35ae5 | 471 | separator = strchr (name, DIRNAME_SEPARATOR); |
c906108c | 472 | |
13d35ae5 AS |
473 | if (separator == 0) |
474 | p = arg = name + strlen (name); | |
c906108c SS |
475 | else |
476 | { | |
13d35ae5 AS |
477 | p = separator; |
478 | arg = p + 1; | |
479 | while (*arg == DIRNAME_SEPARATOR) | |
480 | ++arg; | |
c906108c | 481 | } |
13d35ae5 AS |
482 | |
483 | /* If there are no more directories in this argument then start | |
484 | on the next argument next time round the loop (if any). */ | |
485 | if (*arg == '\0') | |
486 | arg = parse_separators ? argv[++argv_index] : NULL; | |
c906108c SS |
487 | } |
488 | ||
13d35ae5 AS |
489 | /* name is the start of the directory. |
490 | p is the separator (or null) following the end. */ | |
491 | ||
492 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 493 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 494 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 495 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 496 | #endif |
13d35ae5 | 497 | && IS_DIR_SEPARATOR (p[-1])) |
c906108c SS |
498 | /* Sigh. "foo/" => "foo" */ |
499 | --p; | |
c906108c SS |
500 | *p = '\0'; |
501 | ||
7be570e7 | 502 | while (p > name && p[-1] == '.') |
c906108c SS |
503 | { |
504 | if (p - name == 1) | |
505 | { | |
506 | /* "." => getwd (). */ | |
507 | name = current_directory; | |
508 | goto append; | |
509 | } | |
fe4e3eb8 | 510 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
511 | { |
512 | if (p - name == 2) | |
513 | { | |
514 | /* "/." => "/". */ | |
515 | *--p = '\0'; | |
516 | goto append; | |
517 | } | |
518 | else | |
519 | { | |
520 | /* "...foo/." => "...foo". */ | |
521 | p -= 2; | |
522 | *p = '\0'; | |
523 | continue; | |
524 | } | |
525 | } | |
526 | else | |
527 | break; | |
528 | } | |
529 | ||
530 | if (name[0] == '~') | |
531 | name = tilde_expand (name); | |
c3690141 | 532 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 533 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 534 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 535 | #endif |
fe4e3eb8 | 536 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 537 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
538 | else |
539 | name = savestring (name, p - name); | |
b8c9b27d | 540 | make_cleanup (xfree, name); |
c906108c SS |
541 | |
542 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
543 | if (name[0] != '$') |
544 | { | |
545 | /* These are warnings, not errors, since we don't want a | |
546 | non-existent directory in a .gdbinit file to stop processing | |
547 | of the .gdbinit file. | |
548 | ||
549 | Whether they get added to the path is more debatable. Current | |
550 | answer is yes, in case the user wants to go make the directory | |
551 | or whatever. If the directory continues to not exist/not be | |
552 | a directory/etc, then having them in the path should be | |
553 | harmless. */ | |
554 | if (stat (name, &st) < 0) | |
555 | { | |
556 | int save_errno = errno; | |
433759f7 | 557 | |
c5aa993b JM |
558 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
559 | print_sys_errmsg (name, save_errno); | |
560 | } | |
561 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 562 | warning (_("%s is not a directory."), name); |
c5aa993b | 563 | } |
c906108c SS |
564 | |
565 | append: | |
566 | { | |
aa1ee363 | 567 | unsigned int len = strlen (name); |
c906108c SS |
568 | |
569 | p = *which_path; | |
570 | while (1) | |
571 | { | |
7be570e7 JM |
572 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
573 | MS-Windows because of case-insensitivity and two different | |
574 | but functionally identical slash characters. We need a | |
575 | special filesystem-dependent file-name comparison function. | |
576 | ||
577 | Actually, even on Unix I would use realpath() or its work- | |
578 | alike before comparing. Then all the code above which | |
579 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
580 | if (!strncmp (p, name, len) |
581 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
582 | { | |
583 | /* Found it in the search path, remove old copy */ | |
584 | if (p > *which_path) | |
c5aa993b | 585 | p--; /* Back over leading separator */ |
c906108c SS |
586 | if (prefix > p - *which_path) |
587 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 588 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
589 | } |
590 | p = strchr (p, DIRNAME_SEPARATOR); | |
591 | if (p != 0) | |
592 | ++p; | |
593 | else | |
594 | break; | |
595 | } | |
596 | if (p == 0) | |
597 | { | |
598 | char tinybuf[2]; | |
599 | ||
600 | tinybuf[0] = DIRNAME_SEPARATOR; | |
601 | tinybuf[1] = '\0'; | |
602 | ||
3e43a32a MS |
603 | /* If we have already tacked on a name(s) in this command, |
604 | be sure they stay on the front as we tack on some | |
605 | more. */ | |
c906108c SS |
606 | if (prefix) |
607 | { | |
608 | char *temp, c; | |
609 | ||
610 | c = old[prefix]; | |
611 | old[prefix] = '\0'; | |
1754f103 | 612 | temp = concat (old, tinybuf, name, (char *)NULL); |
c906108c | 613 | old[prefix] = c; |
3e43a32a | 614 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); |
c906108c | 615 | prefix = strlen (temp); |
b8c9b27d | 616 | xfree (temp); |
c906108c SS |
617 | } |
618 | else | |
619 | { | |
1754f103 MK |
620 | *which_path = concat (name, (old[0] ? tinybuf : old), |
621 | old, (char *)NULL); | |
c906108c SS |
622 | prefix = strlen (name); |
623 | } | |
b8c9b27d | 624 | xfree (old); |
c906108c SS |
625 | old = *which_path; |
626 | } | |
627 | } | |
c5aa993b JM |
628 | skip_dup:; |
629 | } | |
13d35ae5 | 630 | while (arg != NULL); |
c906108c SS |
631 | } |
632 | ||
633 | ||
634 | static void | |
fba45db2 | 635 | source_info (char *ignore, int from_tty) |
c906108c | 636 | { |
52f0bd74 | 637 | struct symtab *s = current_source_symtab; |
c906108c SS |
638 | |
639 | if (!s) | |
640 | { | |
a3f17187 | 641 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
642 | return; |
643 | } | |
a3f17187 | 644 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 645 | if (s->dirname) |
a3f17187 | 646 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 647 | if (s->fullname) |
a3f17187 | 648 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 649 | if (s->nlines) |
a3f17187 | 650 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
651 | s->nlines == 1 ? "" : "s"); |
652 | ||
a3f17187 AC |
653 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
654 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
655 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 656 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 657 | } |
c5aa993b | 658 | \f |
c906108c | 659 | |
1da1a192 JB |
660 | /* Return True if the file NAME exists and is a regular file */ |
661 | static int | |
662 | is_regular_file (const char *name) | |
663 | { | |
664 | struct stat st; | |
665 | const int status = stat (name, &st); | |
666 | ||
667 | /* Stat should never fail except when the file does not exist. | |
668 | If stat fails, analyze the source of error and return True | |
669 | unless the file does not exist, to avoid returning false results | |
670 | on obscure systems where stat does not work as expected. | |
671 | */ | |
672 | if (status != 0) | |
673 | return (errno != ENOENT); | |
674 | ||
675 | return S_ISREG (st.st_mode); | |
676 | } | |
c906108c | 677 | |
c906108c | 678 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
679 | using mode MODE in the calls to open. You cannot use this function to |
680 | create files (O_CREAT). | |
c906108c | 681 | |
014d698b EZ |
682 | OPTS specifies the function behaviour in specific cases. |
683 | ||
684 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
685 | (ie pretend the first element of PATH is "."). This also indicates |
686 | that a slash in STRING disables searching of the path (this is | |
687 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
688 | get that particular version of foo or an error message). | |
689 | ||
014d698b EZ |
690 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
691 | searched in path (we usually want this for source files but not for | |
692 | executables). | |
693 | ||
e7a8479f | 694 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 695 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
696 | have to take special pains to avoid doubling the "/" between the directory |
697 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
698 | source file name!!! | |
699 | ||
700 | If a file is found, return the descriptor. | |
701 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
702 | ||
703 | /* >>>> This should only allow files of certain types, | |
f2172603 | 704 | >>>> eg executable, non-directory */ |
c906108c | 705 | int |
014d698b | 706 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 707 | int mode, char **filename_opened) |
c906108c | 708 | { |
52f0bd74 AC |
709 | int fd; |
710 | char *filename; | |
1f8cc6db AC |
711 | const char *p; |
712 | const char *p1; | |
52f0bd74 | 713 | int len; |
c906108c SS |
714 | int alloclen; |
715 | ||
fbdebf46 JK |
716 | /* The open syscall MODE parameter is not specified. */ |
717 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
718 | gdb_assert (string != NULL); |
719 | ||
720 | /* A file with an empty name cannot possibly exist. Report a failure | |
721 | without further checking. | |
722 | ||
723 | This is an optimization which also defends us against buggy | |
724 | implementations of the "stat" function. For instance, we have | |
725 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
726 | when the debugger is started with an empty argument. */ | |
727 | if (string[0] == '\0') | |
728 | { | |
729 | errno = ENOENT; | |
730 | return -1; | |
731 | } | |
fbdebf46 | 732 | |
c906108c SS |
733 | if (!path) |
734 | path = "."; | |
735 | ||
c906108c | 736 | mode |= O_BINARY; |
c906108c | 737 | |
014d698b | 738 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
739 | { |
740 | int i; | |
072b1022 DJ |
741 | |
742 | if (is_regular_file (string)) | |
743 | { | |
744 | filename = alloca (strlen (string) + 1); | |
745 | strcpy (filename, string); | |
fbdebf46 | 746 | fd = open (filename, mode); |
072b1022 DJ |
747 | if (fd >= 0) |
748 | goto done; | |
749 | } | |
750 | else | |
3f565f1e DJ |
751 | { |
752 | filename = NULL; | |
753 | fd = -1; | |
754 | } | |
072b1022 | 755 | |
014d698b EZ |
756 | if (!(opts & OPF_SEARCH_IN_PATH)) |
757 | for (i = 0; string[i]; i++) | |
758 | if (IS_DIR_SEPARATOR (string[i])) | |
759 | goto done; | |
c906108c SS |
760 | } |
761 | ||
e6d9b9c2 DE |
762 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
763 | if (HAS_DRIVE_SPEC (string)) | |
764 | string = STRIP_DRIVE_SPEC (string); | |
765 | ||
014d698b EZ |
766 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
767 | while (IS_DIR_SEPARATOR(string[0])) | |
768 | string++; | |
769 | ||
c906108c | 770 | /* ./foo => foo */ |
fe4e3eb8 | 771 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
772 | string += 2; |
773 | ||
774 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 775 | filename = alloca (alloclen); |
c906108c SS |
776 | fd = -1; |
777 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
778 | { | |
1f8cc6db | 779 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
780 | if (p1) |
781 | len = p1 - p; | |
782 | else | |
783 | len = strlen (p); | |
784 | ||
785 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
786 | && p[2] == 'w' && p[3] == 'd') |
787 | { | |
788 | /* Name is $cwd -- insert current directory name instead. */ | |
789 | int newlen; | |
790 | ||
791 | /* First, realloc the filename buffer if too short. */ | |
792 | len = strlen (current_directory); | |
793 | newlen = len + strlen (string) + 2; | |
794 | if (newlen > alloclen) | |
795 | { | |
796 | alloclen = newlen; | |
1f8cc6db | 797 | filename = alloca (alloclen); |
c5aa993b JM |
798 | } |
799 | strcpy (filename, current_directory); | |
800 | } | |
801 | else | |
802 | { | |
803 | /* Normal file name in path -- just use it. */ | |
804 | strncpy (filename, p, len); | |
805 | filename[len] = 0; | |
08001717 DE |
806 | |
807 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
808 | don't have enough information to expand it. The user *could* | |
809 | have an actual directory named '$cdir' but handling that would | |
810 | be confusing, it would mean different things in different | |
811 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
812 | We can get $cdir when loading scripts. When loading source files | |
813 | $cdir must have already been expanded to the correct value. */ | |
814 | if (strcmp (filename, "$cdir") == 0) | |
815 | continue; | |
c906108c | 816 | } |
c906108c SS |
817 | |
818 | /* Remove trailing slashes */ | |
fe4e3eb8 | 819 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
820 | filename[--len] = 0; |
821 | ||
c5aa993b | 822 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
823 | strcat (filename, string); |
824 | ||
1da1a192 | 825 | if (is_regular_file (filename)) |
5e987968 AS |
826 | { |
827 | fd = open (filename, mode); | |
828 | if (fd >= 0) | |
829 | break; | |
830 | } | |
c906108c SS |
831 | } |
832 | ||
c5aa993b | 833 | done: |
c906108c SS |
834 | if (filename_opened) |
835 | { | |
a89f66e4 JB |
836 | /* If a file was opened, canonicalize its filename. Use xfullpath |
837 | rather than gdb_realpath to avoid resolving the basename part | |
838 | of filenames when the associated file is a symbolic link. This | |
839 | fixes a potential inconsistency between the filenames known to | |
840 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 841 | if (fd < 0) |
1f8cc6db | 842 | *filename_opened = NULL; |
fe4e3eb8 | 843 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 844 | *filename_opened = xfullpath (filename); |
c906108c SS |
845 | else |
846 | { | |
847 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b | 848 | |
58d370e0 | 849 | char *f = concat (current_directory, |
5e987968 AS |
850 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
851 | ? "" : SLASH_STRING, | |
1754f103 | 852 | filename, (char *)NULL); |
433759f7 | 853 | |
a89f66e4 | 854 | *filename_opened = xfullpath (f); |
58d370e0 | 855 | xfree (f); |
c5aa993b | 856 | } |
c906108c | 857 | } |
c906108c SS |
858 | |
859 | return fd; | |
860 | } | |
861 | ||
c5aa993b | 862 | |
c906108c SS |
863 | /* This is essentially a convenience, for clients that want the behaviour |
864 | of openp, using source_path, but that really don't want the file to be | |
865 | opened but want instead just to know what the full pathname is (as | |
866 | qualified against source_path). | |
867 | ||
868 | The current working directory is searched first. | |
869 | ||
870 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
871 | set to the fully-qualified pathname. | |
872 | ||
5e987968 | 873 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 874 | int |
24f81874 | 875 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 876 | { |
c5aa993b | 877 | int fd; |
c906108c | 878 | |
014d698b | 879 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 880 | O_RDONLY, full_pathname); |
c906108c SS |
881 | if (fd < 0) |
882 | { | |
883 | *full_pathname = NULL; | |
884 | return 0; | |
885 | } | |
886 | ||
887 | close (fd); | |
888 | return 1; | |
889 | } | |
890 | ||
2f61ca93 JB |
891 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
892 | applied to PATH. */ | |
893 | ||
894 | static int | |
895 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
896 | const char *path) | |
897 | { | |
898 | const int from_len = strlen (rule->from); | |
899 | const int path_len = strlen (path); | |
900 | char *path_start; | |
901 | ||
902 | if (path_len < from_len) | |
903 | return 0; | |
904 | ||
905 | /* The substitution rules are anchored at the start of the path, | |
906 | so the path should start with rule->from. There is no filename | |
907 | comparison routine, so we need to extract the first FROM_LEN | |
908 | characters from PATH first and use that to do the comparison. */ | |
909 | ||
910 | path_start = alloca (from_len + 1); | |
911 | strncpy (path_start, path, from_len); | |
912 | path_start[from_len] = '\0'; | |
913 | ||
914 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
915 | return 0; | |
916 | ||
917 | /* Make sure that the region in the path that matches the substitution | |
918 | rule is immediately followed by a directory separator (or the end of | |
919 | string character). */ | |
920 | ||
921 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
922 | return 0; | |
923 | ||
924 | return 1; | |
925 | } | |
926 | ||
927 | /* Find the substitute-path rule that applies to PATH and return it. | |
928 | Return NULL if no rule applies. */ | |
929 | ||
930 | static struct substitute_path_rule * | |
931 | get_substitute_path_rule (const char *path) | |
932 | { | |
933 | struct substitute_path_rule *rule = substitute_path_rules; | |
934 | ||
935 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
936 | rule = rule->next; | |
937 | ||
938 | return rule; | |
939 | } | |
940 | ||
941 | /* If the user specified a source path substitution rule that applies | |
942 | to PATH, then apply it and return the new path. This new path must | |
943 | be deallocated afterwards. | |
944 | ||
945 | Return NULL if no substitution rule was specified by the user, | |
946 | or if no rule applied to the given PATH. */ | |
947 | ||
948 | static char * | |
949 | rewrite_source_path (const char *path) | |
950 | { | |
951 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
952 | char *new_path; | |
953 | int from_len; | |
954 | ||
955 | if (rule == NULL) | |
956 | return NULL; | |
957 | ||
958 | from_len = strlen (rule->from); | |
959 | ||
960 | /* Compute the rewritten path and return it. */ | |
961 | ||
962 | new_path = | |
963 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
964 | strcpy (new_path, rule->to); | |
965 | strcat (new_path, path + from_len); | |
966 | ||
967 | return new_path; | |
968 | } | |
969 | ||
57c22c6c | 970 | /* This function is capable of finding the absolute path to a |
e2357892 JK |
971 | source file, and opening it, provided you give it a FILENAME. Both the |
972 | DIRNAME and FULLNAME are only added suggestions on where to find the file. | |
57c22c6c | 973 | |
57c22c6c BR |
974 | FILENAME should be the filename to open. |
975 | DIRNAME is the compilation directory of a particular source file. | |
976 | Only some debug formats provide this info. | |
977 | FULLNAME can be the last known absolute path to the file in question. | |
86991504 DE |
978 | Space for the path must have been malloc'd. If a path substitution |
979 | is applied we free the old value and set a new one. | |
57c22c6c BR |
980 | |
981 | On Success | |
982 | A valid file descriptor is returned. ( the return value is positive ) | |
983 | FULLNAME is set to the absolute path to the file just opened. | |
86991504 | 984 | The caller is responsible for freeing FULLNAME. |
57c22c6c BR |
985 | |
986 | On Failure | |
2f61ca93 | 987 | An invalid file descriptor is returned. ( the return value is negative ) |
57c22c6c | 988 | FULLNAME is set to NULL. */ |
86991504 | 989 | |
ccefe4c4 | 990 | int |
e2357892 | 991 | find_and_open_source (const char *filename, |
5e987968 AS |
992 | const char *dirname, |
993 | char **fullname) | |
c906108c SS |
994 | { |
995 | char *path = source_path; | |
31889e00 | 996 | const char *p; |
c906108c | 997 | int result; |
c906108c SS |
998 | |
999 | /* Quick way out if we already know its full name */ | |
2f61ca93 | 1000 | |
57c22c6c | 1001 | if (*fullname) |
c906108c | 1002 | { |
2f61ca93 JB |
1003 | /* The user may have requested that source paths be rewritten |
1004 | according to substitution rules he provided. If a substitution | |
1005 | rule applies to this path, then apply it. */ | |
1006 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
1007 | ||
1008 | if (rewritten_fullname != NULL) | |
1009 | { | |
1010 | xfree (*fullname); | |
1011 | *fullname = rewritten_fullname; | |
1012 | } | |
1013 | ||
57c22c6c | 1014 | result = open (*fullname, OPEN_MODE); |
c906108c | 1015 | if (result >= 0) |
c5aa993b | 1016 | return result; |
c906108c | 1017 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1018 | xfree (*fullname); |
57c22c6c | 1019 | *fullname = NULL; |
c906108c SS |
1020 | } |
1021 | ||
57c22c6c | 1022 | if (dirname != NULL) |
c906108c | 1023 | { |
2f61ca93 JB |
1024 | /* If necessary, rewrite the compilation directory name according |
1025 | to the source path substitution rules specified by the user. */ | |
1026 | ||
1027 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1028 | ||
1029 | if (rewritten_dirname != NULL) | |
1030 | { | |
1031 | make_cleanup (xfree, rewritten_dirname); | |
1032 | dirname = rewritten_dirname; | |
1033 | } | |
1034 | ||
c906108c SS |
1035 | /* Replace a path entry of $cdir with the compilation directory name */ |
1036 | #define cdir_len 5 | |
1037 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
1038 | which produces a "required warning" when assigned to a nonconst. */ |
1039 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 1040 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1041 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1042 | { |
1043 | int len; | |
1044 | ||
1045 | path = (char *) | |
57c22c6c | 1046 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1047 | len = p - source_path; |
c5aa993b | 1048 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1049 | strcpy (path + len, dirname); /* new stuff */ |
1050 | strcat (path + len, source_path + len + cdir_len); /* After | |
1051 | $cdir */ | |
c906108c SS |
1052 | } |
1053 | } | |
8da2a1df DJ |
1054 | |
1055 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1056 | { |
8da2a1df DJ |
1057 | /* If filename is absolute path, try the source path |
1058 | substitution on it. */ | |
56163ce1 JB |
1059 | char *rewritten_filename = rewrite_source_path (filename); |
1060 | ||
1061 | if (rewritten_filename != NULL) | |
1062 | { | |
1063 | make_cleanup (xfree, rewritten_filename); | |
1064 | filename = rewritten_filename; | |
1065 | } | |
1066 | } | |
c906108c | 1067 | |
fbdebf46 | 1068 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1069 | if (result < 0) |
1070 | { | |
1071 | /* Didn't work. Try using just the basename. */ | |
57c22c6c BR |
1072 | p = lbasename (filename); |
1073 | if (p != filename) | |
fbdebf46 | 1074 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1075 | } |
c906108c | 1076 | |
c906108c SS |
1077 | return result; |
1078 | } | |
1079 | ||
57c22c6c BR |
1080 | /* Open a source file given a symtab S. Returns a file descriptor or |
1081 | negative number for error. | |
1082 | ||
1083 | This function is a convience function to find_and_open_source. */ | |
1084 | ||
1085 | int | |
1086 | open_source_file (struct symtab *s) | |
1087 | { | |
5e987968 AS |
1088 | if (!s) |
1089 | return -1; | |
57c22c6c | 1090 | |
e2357892 | 1091 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1092 | } |
1093 | ||
1094 | /* Finds the fullname that a symtab represents. | |
c906108c | 1095 | |
f132ba9d | 1096 | If this functions finds the fullname, it will save it in s->fullname |
57c22c6c BR |
1097 | and it will also return the value. |
1098 | ||
1099 | If this function fails to find the file that this symtab represents, | |
f132ba9d | 1100 | NULL will be returned and s->fullname will be set to NULL. */ |
c906108c | 1101 | char * |
57c22c6c | 1102 | symtab_to_fullname (struct symtab *s) |
c906108c | 1103 | { |
57c22c6c | 1104 | int r; |
c906108c SS |
1105 | |
1106 | if (!s) | |
1107 | return NULL; | |
1108 | ||
57c22c6c BR |
1109 | /* Don't check s->fullname here, the file could have been |
1110 | deleted/moved/..., look for it again */ | |
e2357892 | 1111 | r = find_and_open_source (s->filename, s->dirname, &s->fullname); |
c906108c | 1112 | |
9fe4a216 | 1113 | if (r >= 0) |
5e987968 AS |
1114 | { |
1115 | close (r); | |
1116 | return s->fullname; | |
1117 | } | |
c906108c | 1118 | |
57c22c6c BR |
1119 | return NULL; |
1120 | } | |
5e987968 | 1121 | \f |
c906108c SS |
1122 | /* Create and initialize the table S->line_charpos that records |
1123 | the positions of the lines in the source file, which is assumed | |
1124 | to be open on descriptor DESC. | |
1125 | All set S->nlines to the number of such lines. */ | |
1126 | ||
1127 | void | |
fba45db2 | 1128 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1129 | { |
1130 | struct stat st; | |
52f0bd74 | 1131 | char *data, *p, *end; |
c906108c SS |
1132 | int nlines = 0; |
1133 | int lines_allocated = 1000; | |
1134 | int *line_charpos; | |
1135 | long mtime = 0; | |
1136 | int size; | |
1137 | ||
be8ca11b | 1138 | gdb_assert (s); |
7936743b | 1139 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1140 | if (fstat (desc, &st) < 0) |
1141 | perror_with_name (s->filename); | |
1142 | ||
be8ca11b | 1143 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1144 | mtime = s->objfile->mtime; |
c906108c | 1145 | else if (exec_bfd) |
c04ea773 | 1146 | mtime = exec_bfd_mtime; |
c906108c SS |
1147 | |
1148 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1149 | warning (_("Source file is more recent than executable.")); |
c906108c SS |
1150 | |
1151 | #ifdef LSEEK_NOT_LINEAR | |
1152 | { | |
1153 | char c; | |
1154 | ||
1155 | /* Have to read it byte by byte to find out where the chars live */ | |
1156 | ||
1157 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
1158 | nlines = 1; | |
c5aa993b | 1159 | while (myread (desc, &c, 1) > 0) |
c906108c | 1160 | { |
c5aa993b | 1161 | if (c == '\n') |
c906108c | 1162 | { |
c5aa993b | 1163 | if (nlines == lines_allocated) |
c906108c SS |
1164 | { |
1165 | lines_allocated *= 2; | |
1166 | line_charpos = | |
0efffb96 AC |
1167 | (int *) xrealloc ((char *) line_charpos, |
1168 | sizeof (int) * lines_allocated); | |
c906108c SS |
1169 | } |
1170 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
1171 | } | |
1172 | } | |
1173 | } | |
1174 | #else /* lseek linear. */ | |
1175 | { | |
1176 | struct cleanup *old_cleanups; | |
1177 | ||
1178 | /* st_size might be a large type, but we only support source files whose | |
1179 | size fits in an int. */ | |
1180 | size = (int) st.st_size; | |
1181 | ||
1182 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1183 | run into various kinds of limits on stack size. */ | |
1184 | data = (char *) xmalloc (size); | |
b8c9b27d | 1185 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1186 | |
1187 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1188 | size = myread (desc, data, size); | |
1189 | if (size < 0) | |
1190 | perror_with_name (s->filename); | |
1191 | end = data + size; | |
1192 | p = data; | |
1193 | line_charpos[0] = 0; | |
1194 | nlines = 1; | |
1195 | while (p != end) | |
1196 | { | |
1197 | if (*p++ == '\n' | |
c5aa993b | 1198 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1199 | && p != end) |
1200 | { | |
1201 | if (nlines == lines_allocated) | |
1202 | { | |
1203 | lines_allocated *= 2; | |
1204 | line_charpos = | |
0efffb96 AC |
1205 | (int *) xrealloc ((char *) line_charpos, |
1206 | sizeof (int) * lines_allocated); | |
c906108c SS |
1207 | } |
1208 | line_charpos[nlines++] = p - data; | |
1209 | } | |
1210 | } | |
1211 | do_cleanups (old_cleanups); | |
1212 | } | |
1213 | #endif /* lseek linear. */ | |
1214 | s->nlines = nlines; | |
1215 | s->line_charpos = | |
0efffb96 | 1216 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1217 | |
1218 | } | |
1219 | ||
1220 | /* Return the character position of a line LINE in symtab S. | |
1221 | Return 0 if anything is invalid. */ | |
1222 | ||
c5aa993b | 1223 | #if 0 /* Currently unused */ |
c906108c SS |
1224 | |
1225 | int | |
fba45db2 | 1226 | source_line_charpos (struct symtab *s, int line) |
c906108c | 1227 | { |
c5aa993b JM |
1228 | if (!s) |
1229 | return 0; | |
1230 | if (!s->line_charpos || line <= 0) | |
1231 | return 0; | |
c906108c SS |
1232 | if (line > s->nlines) |
1233 | line = s->nlines; | |
1234 | return s->line_charpos[line - 1]; | |
1235 | } | |
1236 | ||
1237 | /* Return the line number of character position POS in symtab S. */ | |
1238 | ||
1239 | int | |
aa1ee363 | 1240 | source_charpos_line (struct symtab *s, int chr) |
c906108c | 1241 | { |
52f0bd74 AC |
1242 | int line = 0; |
1243 | int *lnp; | |
c5aa993b JM |
1244 | |
1245 | if (s == 0 || s->line_charpos == 0) | |
1246 | return 0; | |
c906108c SS |
1247 | lnp = s->line_charpos; |
1248 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 1249 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
1250 | { |
1251 | line++; | |
1252 | lnp++; | |
1253 | } | |
1254 | if (line >= s->nlines) | |
1255 | line = s->nlines; | |
1256 | return line; | |
1257 | } | |
1258 | ||
c5aa993b | 1259 | #endif /* 0 */ |
c906108c | 1260 | \f |
c5aa993b | 1261 | |
c906108c SS |
1262 | /* Get full pathname and line number positions for a symtab. |
1263 | Return nonzero if line numbers may have changed. | |
1264 | Set *FULLNAME to actual name of the file as found by `openp', | |
1265 | or to 0 if the file is not found. */ | |
1266 | ||
1267 | static int | |
fba45db2 | 1268 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1269 | { |
52f0bd74 | 1270 | int desc, linenums_changed = 0; |
9fe4a216 | 1271 | struct cleanup *cleanups; |
c5aa993b | 1272 | |
c906108c SS |
1273 | desc = open_source_file (s); |
1274 | if (desc < 0) | |
1275 | { | |
1276 | if (fullname) | |
1277 | *fullname = NULL; | |
1278 | return 0; | |
c5aa993b | 1279 | } |
9fe4a216 | 1280 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1281 | if (fullname) |
1282 | *fullname = s->fullname; | |
c5aa993b JM |
1283 | if (s->line_charpos == 0) |
1284 | linenums_changed = 1; | |
1285 | if (linenums_changed) | |
1286 | find_source_lines (s, desc); | |
9fe4a216 | 1287 | do_cleanups (cleanups); |
c906108c SS |
1288 | return linenums_changed; |
1289 | } | |
1290 | ||
1291 | /* Print text describing the full name of the source file S | |
1292 | and the line number LINE and its corresponding character position. | |
1293 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1294 | can easily find it. | |
1295 | ||
1296 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1297 | ||
1298 | Return 1 if successful, 0 if could not find the file. */ | |
1299 | ||
1300 | int | |
fba45db2 KB |
1301 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1302 | CORE_ADDR pc) | |
c906108c SS |
1303 | { |
1304 | if (s->line_charpos == 0) | |
c5aa993b | 1305 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1306 | if (s->fullname == 0) |
1307 | return 0; | |
1308 | if (line > s->nlines) | |
1309 | /* Don't index off the end of the line_charpos array. */ | |
1310 | return 0; | |
1311 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1312 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1313 | |
1314 | current_source_line = line; | |
1315 | first_line_listed = line; | |
1316 | last_line_listed = line; | |
1317 | current_source_symtab = s; | |
1318 | return 1; | |
1319 | } | |
c906108c | 1320 | \f |
c5aa993b | 1321 | |
c906108c SS |
1322 | /* Print source lines from the file of symtab S, |
1323 | starting with line number LINE and stopping before line number STOPLINE. */ | |
1324 | ||
a14ed312 KB |
1325 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1326 | int noerror); | |
c906108c | 1327 | static void |
fba45db2 | 1328 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1329 | { |
52f0bd74 AC |
1330 | int c; |
1331 | int desc; | |
f4dfd9c0 | 1332 | int noprint = 0; |
52f0bd74 | 1333 | FILE *stream; |
c906108c | 1334 | int nlines = stopline - line; |
7c8a8b04 | 1335 | struct cleanup *cleanup; |
c906108c SS |
1336 | |
1337 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
1338 | current_source_symtab = s; | |
1339 | current_source_line = line; | |
1340 | first_line_listed = line; | |
1341 | ||
3e43a32a MS |
1342 | /* If printing of source lines is disabled, just print file and line |
1343 | number */ | |
8b93c638 JM |
1344 | if (ui_out_test_flags (uiout, ui_source_list)) |
1345 | { | |
c5aa993b JM |
1346 | /* Only prints "No such file or directory" once */ |
1347 | if ((s != last_source_visited) || (!last_source_error)) | |
1348 | { | |
1349 | last_source_visited = s; | |
1350 | desc = open_source_file (s); | |
1351 | } | |
1352 | else | |
1353 | { | |
1354 | desc = last_source_error; | |
1355 | noerror = 1; | |
1356 | } | |
8b93c638 JM |
1357 | } |
1358 | else | |
1359 | { | |
f4dfd9c0 | 1360 | desc = last_source_error; |
8b93c638 | 1361 | noerror = 1; |
f4dfd9c0 | 1362 | noprint = 1; |
8b93c638 | 1363 | } |
c906108c | 1364 | |
f4dfd9c0 | 1365 | if (desc < 0 || noprint) |
c906108c SS |
1366 | { |
1367 | last_source_error = desc; | |
1368 | ||
c5aa993b JM |
1369 | if (!noerror) |
1370 | { | |
c906108c SS |
1371 | char *name = alloca (strlen (s->filename) + 100); |
1372 | sprintf (name, "%d\t%s", line, s->filename); | |
1373 | print_sys_errmsg (name, errno); | |
1374 | } | |
1375 | else | |
8b93c638 JM |
1376 | ui_out_field_int (uiout, "line", line); |
1377 | ui_out_text (uiout, "\tin "); | |
1378 | ui_out_field_string (uiout, "file", s->filename); | |
1379 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1380 | |
1381 | return; | |
1382 | } | |
1383 | ||
1384 | last_source_error = 0; | |
1385 | ||
1386 | if (s->line_charpos == 0) | |
1387 | find_source_lines (s, desc); | |
1388 | ||
1389 | if (line < 1 || line > s->nlines) | |
1390 | { | |
1391 | close (desc); | |
8a3fe4f8 | 1392 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1393 | line, s->filename, s->nlines); |
1394 | } | |
1395 | ||
1396 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1397 | { | |
1398 | close (desc); | |
1399 | perror_with_name (s->filename); | |
1400 | } | |
1401 | ||
1402 | stream = fdopen (desc, FDOPEN_MODE); | |
1403 | clearerr (stream); | |
7c8a8b04 | 1404 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1405 | |
1406 | while (nlines-- > 0) | |
1407 | { | |
8b93c638 JM |
1408 | char buf[20]; |
1409 | ||
1410 | c = fgetc (stream); | |
1411 | if (c == EOF) | |
1412 | break; | |
1413 | last_line_listed = current_source_line; | |
1414 | sprintf (buf, "%d\t", current_source_line++); | |
1415 | ui_out_text (uiout, buf); | |
1416 | do | |
1417 | { | |
1418 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1419 | { | |
1420 | sprintf (buf, "^%c", c + 0100); | |
1421 | ui_out_text (uiout, buf); | |
1422 | } | |
1423 | else if (c == 0177) | |
1424 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1425 | else if (c == '\r') |
1426 | { | |
1427 | /* Skip a \r character, but only before a \n. */ | |
1428 | int c1 = fgetc (stream); | |
1429 | ||
1430 | if (c1 != '\n') | |
1431 | printf_filtered ("^%c", c + 0100); | |
1432 | if (c1 != EOF) | |
1433 | ungetc (c1, stream); | |
1434 | } | |
8b93c638 JM |
1435 | else |
1436 | { | |
1437 | sprintf (buf, "%c", c); | |
1438 | ui_out_text (uiout, buf); | |
1439 | } | |
1440 | } | |
1441 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1442 | } |
1443 | ||
7c8a8b04 | 1444 | do_cleanups (cleanup); |
c906108c SS |
1445 | } |
1446 | \f | |
1447 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1448 | number LINE and stopping before line number STOPLINE. If this is |
c906108c SS |
1449 | not the command line version, then the source is shown in the source |
1450 | window otherwise it is simply printed */ | |
1451 | ||
c5aa993b | 1452 | void |
fba45db2 | 1453 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1454 | { |
c5aa993b | 1455 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1456 | } |
1457 | \f | |
c906108c SS |
1458 | /* Print info on range of pc's in a specified line. */ |
1459 | ||
1460 | static void | |
fba45db2 | 1461 | line_info (char *arg, int from_tty) |
c906108c SS |
1462 | { |
1463 | struct symtabs_and_lines sals; | |
1464 | struct symtab_and_line sal; | |
1465 | CORE_ADDR start_pc, end_pc; | |
1466 | int i; | |
1467 | ||
fe39c653 | 1468 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1469 | |
1470 | if (arg == 0) | |
1471 | { | |
1472 | sal.symtab = current_source_symtab; | |
1473 | sal.line = last_line_listed; | |
1474 | sals.nelts = 1; | |
1475 | sals.sals = (struct symtab_and_line *) | |
1476 | xmalloc (sizeof (struct symtab_and_line)); | |
1477 | sals.sals[0] = sal; | |
1478 | } | |
1479 | else | |
1480 | { | |
1481 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1482 | |
c906108c SS |
1483 | dont_repeat (); |
1484 | } | |
1485 | ||
1486 | /* C++ More than one line may have been specified, as when the user | |
1487 | specifies an overloaded function name. Print info on them all. */ | |
1488 | for (i = 0; i < sals.nelts; i++) | |
1489 | { | |
1490 | sal = sals.sals[i]; | |
c5aa993b | 1491 | |
c906108c SS |
1492 | if (sal.symtab == 0) |
1493 | { | |
5af949e3 UW |
1494 | struct gdbarch *gdbarch = get_current_arch (); |
1495 | ||
a3f17187 | 1496 | printf_filtered (_("No line number information available")); |
c906108c SS |
1497 | if (sal.pc != 0) |
1498 | { | |
1499 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1500 | user about a source line, at least let them have the symbolic |
1501 | address. */ | |
c906108c SS |
1502 | printf_filtered (" for address "); |
1503 | wrap_here (" "); | |
5af949e3 | 1504 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1505 | } |
1506 | else | |
1507 | printf_filtered ("."); | |
1508 | printf_filtered ("\n"); | |
1509 | } | |
1510 | else if (sal.line > 0 | |
1511 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1512 | { | |
5af949e3 UW |
1513 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1514 | ||
c906108c SS |
1515 | if (start_pc == end_pc) |
1516 | { | |
1517 | printf_filtered ("Line %d of \"%s\"", | |
1518 | sal.line, sal.symtab->filename); | |
1519 | wrap_here (" "); | |
1520 | printf_filtered (" is at address "); | |
5af949e3 | 1521 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1522 | wrap_here (" "); |
1523 | printf_filtered (" but contains no code.\n"); | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | printf_filtered ("Line %d of \"%s\"", | |
1528 | sal.line, sal.symtab->filename); | |
1529 | wrap_here (" "); | |
1530 | printf_filtered (" starts at address "); | |
5af949e3 | 1531 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1532 | wrap_here (" "); |
1533 | printf_filtered (" and ends at "); | |
5af949e3 | 1534 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1535 | printf_filtered (".\n"); |
1536 | } | |
1537 | ||
1538 | /* x/i should display this line's code. */ | |
5af949e3 | 1539 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1540 | |
1541 | /* Repeating "info line" should do the following line. */ | |
1542 | last_line_listed = sal.line + 1; | |
1543 | ||
1544 | /* If this is the only line, show the source code. If it could | |
1545 | not find the file, don't do anything special. */ | |
1546 | if (annotation_level && sals.nelts == 1) | |
1547 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1548 | } | |
1549 | else | |
1550 | /* Is there any case in which we get here, and have an address | |
1551 | which the user would want to see? If we have debugging symbols | |
1552 | and no line numbers? */ | |
a3f17187 | 1553 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1554 | sal.line, sal.symtab->filename); |
1555 | } | |
b8c9b27d | 1556 | xfree (sals.sals); |
c906108c SS |
1557 | } |
1558 | \f | |
1559 | /* Commands to search the source file for a regexp. */ | |
1560 | ||
c906108c | 1561 | static void |
fba45db2 | 1562 | forward_search_command (char *regex, int from_tty) |
c906108c | 1563 | { |
52f0bd74 AC |
1564 | int c; |
1565 | int desc; | |
1566 | FILE *stream; | |
c906108c SS |
1567 | int line; |
1568 | char *msg; | |
9fe4a216 | 1569 | struct cleanup *cleanups; |
c906108c | 1570 | |
c906108c | 1571 | line = last_line_listed + 1; |
c906108c SS |
1572 | |
1573 | msg = (char *) re_comp (regex); | |
1574 | if (msg) | |
8a3fe4f8 | 1575 | error (("%s"), msg); |
c906108c SS |
1576 | |
1577 | if (current_source_symtab == 0) | |
1578 | select_source_symtab (0); | |
1579 | ||
1580 | desc = open_source_file (current_source_symtab); | |
1581 | if (desc < 0) | |
1582 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1583 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1584 | |
1585 | if (current_source_symtab->line_charpos == 0) | |
1586 | find_source_lines (current_source_symtab, desc); | |
1587 | ||
1588 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1589 | error (_("Expression not found")); |
c906108c SS |
1590 | |
1591 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1592 | perror_with_name (current_source_symtab->filename); |
c906108c | 1593 | |
9fe4a216 | 1594 | discard_cleanups (cleanups); |
c906108c SS |
1595 | stream = fdopen (desc, FDOPEN_MODE); |
1596 | clearerr (stream); | |
9fe4a216 | 1597 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1598 | while (1) |
1599 | { | |
1600 | static char *buf = NULL; | |
aa1ee363 | 1601 | char *p; |
c5aa993b JM |
1602 | int cursize, newsize; |
1603 | ||
1604 | cursize = 256; | |
1605 | buf = xmalloc (cursize); | |
1606 | p = buf; | |
1607 | ||
1608 | c = getc (stream); | |
1609 | if (c == EOF) | |
1610 | break; | |
1611 | do | |
c906108c | 1612 | { |
c5aa993b JM |
1613 | *p++ = c; |
1614 | if (p - buf == cursize) | |
1615 | { | |
1616 | newsize = cursize + cursize / 2; | |
1617 | buf = xrealloc (buf, newsize); | |
1618 | p = buf + cursize; | |
1619 | cursize = newsize; | |
1620 | } | |
c906108c | 1621 | } |
c5aa993b | 1622 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1623 | |
7be570e7 JM |
1624 | /* Remove the \r, if any, at the end of the line, otherwise |
1625 | regular expressions that end with $ or \n won't work. */ | |
1626 | if (p - buf > 1 && p[-2] == '\r') | |
1627 | { | |
1628 | p--; | |
1629 | p[-1] = '\n'; | |
1630 | } | |
7be570e7 | 1631 | |
c5aa993b JM |
1632 | /* we now have a source line in buf, null terminate and match */ |
1633 | *p = 0; | |
1634 | if (re_exec (buf) > 0) | |
1635 | { | |
1636 | /* Match! */ | |
e681b284 | 1637 | do_cleanups (cleanups); |
c5aa993b | 1638 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1639 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1640 | current_source_line = max (line - lines_to_list / 2, 1); |
1641 | return; | |
1642 | } | |
1643 | line++; | |
1644 | } | |
c906108c | 1645 | |
a3f17187 | 1646 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1647 | do_cleanups (cleanups); |
c906108c SS |
1648 | } |
1649 | ||
c906108c | 1650 | static void |
fba45db2 | 1651 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1652 | { |
52f0bd74 AC |
1653 | int c; |
1654 | int desc; | |
1655 | FILE *stream; | |
c906108c SS |
1656 | int line; |
1657 | char *msg; | |
9fe4a216 | 1658 | struct cleanup *cleanups; |
063190b6 | 1659 | |
c906108c | 1660 | line = last_line_listed - 1; |
c906108c SS |
1661 | |
1662 | msg = (char *) re_comp (regex); | |
1663 | if (msg) | |
8a3fe4f8 | 1664 | error (("%s"), msg); |
c906108c SS |
1665 | |
1666 | if (current_source_symtab == 0) | |
1667 | select_source_symtab (0); | |
1668 | ||
1669 | desc = open_source_file (current_source_symtab); | |
1670 | if (desc < 0) | |
1671 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1672 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1673 | |
1674 | if (current_source_symtab->line_charpos == 0) | |
1675 | find_source_lines (current_source_symtab, desc); | |
1676 | ||
1677 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1678 | error (_("Expression not found")); |
c906108c SS |
1679 | |
1680 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1681 | perror_with_name (current_source_symtab->filename); |
c906108c | 1682 | |
9fe4a216 | 1683 | discard_cleanups (cleanups); |
c906108c SS |
1684 | stream = fdopen (desc, FDOPEN_MODE); |
1685 | clearerr (stream); | |
9fe4a216 | 1686 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1687 | while (line > 1) |
1688 | { | |
1689 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1690 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1691 | char *p = buf; |
c906108c SS |
1692 | |
1693 | c = getc (stream); | |
1694 | if (c == EOF) | |
1695 | break; | |
c5aa993b JM |
1696 | do |
1697 | { | |
1698 | *p++ = c; | |
1699 | } | |
1700 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1701 | |
7be570e7 JM |
1702 | /* Remove the \r, if any, at the end of the line, otherwise |
1703 | regular expressions that end with $ or \n won't work. */ | |
1704 | if (p - buf > 1 && p[-2] == '\r') | |
1705 | { | |
1706 | p--; | |
1707 | p[-1] = '\n'; | |
1708 | } | |
7be570e7 | 1709 | |
c906108c SS |
1710 | /* We now have a source line in buf; null terminate and match. */ |
1711 | *p = 0; | |
1712 | if (re_exec (buf) > 0) | |
1713 | { | |
1714 | /* Match! */ | |
e681b284 | 1715 | do_cleanups (cleanups); |
c5aa993b | 1716 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1717 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1718 | current_source_line = max (line - lines_to_list / 2, 1); |
1719 | return; | |
1720 | } | |
1721 | line--; | |
1722 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1723 | { | |
e681b284 | 1724 | do_cleanups (cleanups); |
c906108c SS |
1725 | perror_with_name (current_source_symtab->filename); |
1726 | } | |
1727 | } | |
1728 | ||
a3f17187 | 1729 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1730 | do_cleanups (cleanups); |
c906108c SS |
1731 | return; |
1732 | } | |
2f61ca93 JB |
1733 | |
1734 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1735 | ||
1736 | static void | |
1737 | strip_trailing_directory_separator (char *path) | |
1738 | { | |
1739 | const int last = strlen (path) - 1; | |
1740 | ||
1741 | if (last < 0) | |
1742 | return; /* No stripping is needed if PATH is the empty string. */ | |
1743 | ||
1744 | if (IS_DIR_SEPARATOR (path[last])) | |
1745 | path[last] = '\0'; | |
1746 | } | |
1747 | ||
1748 | /* Return the path substitution rule that matches FROM. | |
1749 | Return NULL if no rule matches. */ | |
1750 | ||
1751 | static struct substitute_path_rule * | |
1752 | find_substitute_path_rule (const char *from) | |
1753 | { | |
1754 | struct substitute_path_rule *rule = substitute_path_rules; | |
1755 | ||
1756 | while (rule != NULL) | |
1757 | { | |
1758 | if (FILENAME_CMP (rule->from, from) == 0) | |
1759 | return rule; | |
1760 | rule = rule->next; | |
1761 | } | |
1762 | ||
1763 | return NULL; | |
1764 | } | |
1765 | ||
1766 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1767 | The new rule will replace FROM into TO. */ | |
1768 | ||
29b0e8a2 | 1769 | void |
2f61ca93 JB |
1770 | add_substitute_path_rule (char *from, char *to) |
1771 | { | |
1772 | struct substitute_path_rule *rule; | |
1773 | struct substitute_path_rule *new_rule; | |
1774 | ||
1775 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1776 | new_rule->from = xstrdup (from); | |
1777 | new_rule->to = xstrdup (to); | |
1778 | new_rule->next = NULL; | |
1779 | ||
1780 | /* If the list of rules are empty, then insert the new rule | |
1781 | at the head of the list. */ | |
1782 | ||
1783 | if (substitute_path_rules == NULL) | |
1784 | { | |
1785 | substitute_path_rules = new_rule; | |
1786 | return; | |
1787 | } | |
1788 | ||
1789 | /* Otherwise, skip to the last rule in our list and then append | |
1790 | the new rule. */ | |
1791 | ||
1792 | rule = substitute_path_rules; | |
1793 | while (rule->next != NULL) | |
1794 | rule = rule->next; | |
1795 | ||
1796 | rule->next = new_rule; | |
1797 | } | |
1798 | ||
1799 | /* Remove the given source path substitution rule from the current list | |
1800 | of rules. The memory allocated for that rule is also deallocated. */ | |
1801 | ||
1802 | static void | |
1803 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1804 | { | |
1805 | if (rule == substitute_path_rules) | |
1806 | substitute_path_rules = rule->next; | |
1807 | else | |
1808 | { | |
1809 | struct substitute_path_rule *prev = substitute_path_rules; | |
1810 | ||
1811 | while (prev != NULL && prev->next != rule) | |
1812 | prev = prev->next; | |
1813 | ||
1814 | gdb_assert (prev != NULL); | |
1815 | ||
1816 | prev->next = rule->next; | |
1817 | } | |
1818 | ||
1819 | xfree (rule->from); | |
1820 | xfree (rule->to); | |
1821 | xfree (rule); | |
1822 | } | |
1823 | ||
1824 | /* Implement the "show substitute-path" command. */ | |
1825 | ||
1826 | static void | |
1827 | show_substitute_path_command (char *args, int from_tty) | |
1828 | { | |
1829 | struct substitute_path_rule *rule = substitute_path_rules; | |
1830 | char **argv; | |
1831 | char *from = NULL; | |
1832 | ||
d1a41061 | 1833 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1834 | make_cleanup_freeargv (argv); |
1835 | ||
1836 | /* We expect zero or one argument. */ | |
1837 | ||
1838 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1839 | error (_("Too many arguments in command")); | |
1840 | ||
1841 | if (argv != NULL && argv[0] != NULL) | |
1842 | from = argv[0]; | |
1843 | ||
1844 | /* Print the substitution rules. */ | |
1845 | ||
1846 | if (from != NULL) | |
1847 | printf_filtered | |
1848 | (_("Source path substitution rule matching `%s':\n"), from); | |
1849 | else | |
1850 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1851 | ||
1852 | while (rule != NULL) | |
1853 | { | |
1854 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1855 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1856 | rule = rule->next; | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | /* Implement the "unset substitute-path" command. */ | |
1861 | ||
1862 | static void | |
1863 | unset_substitute_path_command (char *args, int from_tty) | |
1864 | { | |
1865 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1866 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1867 | char *from = NULL; |
1868 | int rule_found = 0; | |
1869 | ||
1870 | /* This function takes either 0 or 1 argument. */ | |
1871 | ||
77accacd | 1872 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1873 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1874 | error (_("Incorrect usage, too many arguments in command")); | |
1875 | ||
1876 | if (argv != NULL && argv[0] != NULL) | |
1877 | from = argv[0]; | |
1878 | ||
1879 | /* If the user asked for all the rules to be deleted, ask him | |
1880 | to confirm and give him a chance to abort before the action | |
1881 | is performed. */ | |
1882 | ||
1883 | if (from == NULL | |
1884 | && !query (_("Delete all source path substitution rules? "))) | |
1885 | error (_("Canceled")); | |
1886 | ||
1887 | /* Delete the rule matching the argument. No argument means that | |
1888 | all rules should be deleted. */ | |
1889 | ||
1890 | while (rule != NULL) | |
1891 | { | |
1892 | struct substitute_path_rule *next = rule->next; | |
1893 | ||
1894 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1895 | { | |
1896 | delete_substitute_path_rule (rule); | |
1897 | rule_found = 1; | |
1898 | } | |
1899 | ||
1900 | rule = next; | |
1901 | } | |
1902 | ||
1903 | /* If the user asked for a specific rule to be deleted but | |
1904 | we could not find it, then report an error. */ | |
1905 | ||
1906 | if (from != NULL && !rule_found) | |
1907 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1908 | |
1909 | forget_cached_source_info (); | |
2f61ca93 JB |
1910 | } |
1911 | ||
1912 | /* Add a new source path substitution rule. */ | |
1913 | ||
1914 | static void | |
1915 | set_substitute_path_command (char *args, int from_tty) | |
1916 | { | |
2f61ca93 JB |
1917 | char **argv; |
1918 | struct substitute_path_rule *rule; | |
1919 | ||
d1a41061 | 1920 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1921 | make_cleanup_freeargv (argv); |
1922 | ||
1923 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1924 | error (_("Incorrect usage, too few arguments in command")); | |
1925 | ||
1926 | if (argv[2] != NULL) | |
1927 | error (_("Incorrect usage, too many arguments in command")); | |
1928 | ||
1929 | if (*(argv[0]) == '\0') | |
1930 | error (_("First argument must be at least one character long")); | |
1931 | ||
1932 | /* Strip any trailing directory separator character in either FROM | |
1933 | or TO. The substitution rule already implicitly contains them. */ | |
1934 | strip_trailing_directory_separator (argv[0]); | |
1935 | strip_trailing_directory_separator (argv[1]); | |
1936 | ||
1937 | /* If a rule with the same "from" was previously defined, then | |
1938 | delete it. This new rule replaces it. */ | |
1939 | ||
1940 | rule = find_substitute_path_rule (argv[0]); | |
1941 | if (rule != NULL) | |
1942 | delete_substitute_path_rule (rule); | |
1943 | ||
1944 | /* Insert the new substitution rule. */ | |
1945 | ||
1946 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1947 | forget_cached_source_info (); |
2f61ca93 JB |
1948 | } |
1949 | ||
c906108c SS |
1950 | \f |
1951 | void | |
fba45db2 | 1952 | _initialize_source (void) |
c906108c SS |
1953 | { |
1954 | struct cmd_list_element *c; | |
433759f7 | 1955 | |
c906108c SS |
1956 | current_source_symtab = 0; |
1957 | init_source_path (); | |
1958 | ||
1959 | /* The intention is to use POSIX Basic Regular Expressions. | |
1960 | Always use the GNU regex routine for consistency across all hosts. | |
1961 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1962 | just an approximation. */ | |
1963 | re_set_syntax (RE_SYNTAX_GREP); | |
1964 | ||
1a966eab AC |
1965 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1966 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1967 | Forget cached info on source file locations and line positions.\n\ |
1968 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1969 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1970 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1971 | &cmdlist); |
1972 | ||
1973 | if (dbx_commands) | |
c5aa993b | 1974 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1975 | |
5ba2abeb | 1976 | set_cmd_completer (c, filename_completer); |
c906108c | 1977 | |
99e7ae30 DE |
1978 | add_setshow_optional_filename_cmd ("directories", |
1979 | class_files, | |
1980 | &source_path, | |
1981 | _("\ | |
1982 | Set the search path for finding source files."), | |
1983 | _("\ | |
1984 | Show the search path for finding source files."), | |
1985 | _("\ | |
c906108c | 1986 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1987 | $cdir in the path means the compilation directory of the source file.\n\ |
1988 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1989 | appending these directories if necessary.\n\ | |
1990 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1991 | set_directories_command, | |
1992 | show_directories_command, | |
1993 | &setlist, &showlist); | |
c906108c SS |
1994 | |
1995 | if (xdb_commands) | |
1996 | { | |
c5aa993b | 1997 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 1998 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 1999 | Current search path for finding source files.\n\ |
c906108c | 2000 | $cwd in the path means the current working directory.\n\ |
1a966eab | 2001 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 2002 | &cmdlist); |
c906108c SS |
2003 | } |
2004 | ||
2005 | add_info ("source", source_info, | |
1bedd215 | 2006 | _("Information about the current source file.")); |
c906108c | 2007 | |
1bedd215 AC |
2008 | add_info ("line", line_info, _("\ |
2009 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
2010 | Line can be specified as\n\ |
2011 | LINENUM, to list around that line in current file,\n\ | |
2012 | FILE:LINENUM, to list around that line in that file,\n\ | |
2013 | FUNCTION, to list around beginning of that function,\n\ | |
2014 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
2015 | Default is to describe the last source line that was listed.\n\n\ |
2016 | This sets the default address for \"x\" to the line's first instruction\n\ | |
2017 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 2018 | The address is also stored as the value of \"$_\".")); |
c906108c | 2019 | |
1bedd215 AC |
2020 | add_com ("forward-search", class_files, forward_search_command, _("\ |
2021 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
2022 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
2023 | add_com_alias ("search", "forward-search", class_files, 0); |
2024 | ||
1bedd215 AC |
2025 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
2026 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
2027 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 2028 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
2029 | |
2030 | if (xdb_commands) | |
2031 | { | |
c5aa993b JM |
2032 | add_com_alias ("/", "forward-search", class_files, 0); |
2033 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
2034 | } |
2035 | ||
bd4109fb | 2036 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d AC |
2037 | Set number of source lines gdb will list by default."), _("\ |
2038 | Show number of source lines gdb will list by default."), NULL, | |
2039 | NULL, | |
920d2a44 | 2040 | show_lines_to_list, |
35096d9d | 2041 | &setlist, &showlist); |
2f61ca93 JB |
2042 | |
2043 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2044 | _("\ | |
7ef2b397 JB |
2045 | Usage: set substitute-path FROM TO\n\ |
2046 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2047 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2048 | is replaced by the new one."), | |
2049 | &setlist); | |
2f61ca93 JB |
2050 | |
2051 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2052 | _("\ | |
7ef2b397 JB |
2053 | Usage: unset substitute-path [FROM]\n\ |
2054 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2055 | is not specified, all substituting rules are deleted.\n\ | |
2056 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2057 | &unsetlist); |
2058 | ||
2059 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2060 | _("\ |
2061 | Usage: show substitute-path [FROM]\n\ | |
2062 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2063 | is not specified, print all substitution rules."), | |
2f61ca93 | 2064 | &showlist); |
c906108c | 2065 | } |