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 | ||
c378eb4e | 55 | /* Prototypes for exported functions. */ |
c906108c | 56 | |
a14ed312 | 57 | void _initialize_source (void); |
c906108c | 58 | |
c378eb4e | 59 | /* Prototypes for local functions. */ |
c906108c | 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. | |
c378eb4e | 124 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
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 | |
c378eb4e | 131 | a previous point. */ |
0378c332 FN |
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 | |
c378eb4e | 142 | as it does not automatically use this value. */ |
0378c332 FN |
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. | |
c378eb4e | 151 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
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 | |
c378eb4e | 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 | 180 | |
c378eb4e | 181 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
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 | 188 | and set the current default to whatever is in SAL. |
c378eb4e | 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 | ||
c378eb4e | 209 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
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 (); | |
c378eb4e | 389 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
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 | |
c378eb4e | 428 | as space or tab. */ |
c04e0a08 JJ |
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 | |
c378eb4e | 445 | and any quotes that may exist. DIRNAME_SEPARATOR will |
13d35ae5 | 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])) |
c378eb4e | 498 | /* Sigh. "foo/" => "foo" */ |
c906108c | 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 | { | |
c378eb4e | 583 | /* Found it in the search path, remove old copy. */ |
c906108c | 584 | if (p > *which_path) |
c378eb4e | 585 | p--; /* Back over leading separator. */ |
c906108c | 586 | if (prefix > p - *which_path) |
c378eb4e | 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 | } | |
82ae4854 | 628 | skip_dup: |
b27cf2b3 | 629 | ; |
c5aa993b | 630 | } |
13d35ae5 | 631 | while (arg != NULL); |
c906108c SS |
632 | } |
633 | ||
634 | ||
635 | static void | |
fba45db2 | 636 | source_info (char *ignore, int from_tty) |
c906108c | 637 | { |
52f0bd74 | 638 | struct symtab *s = current_source_symtab; |
c906108c SS |
639 | |
640 | if (!s) | |
641 | { | |
a3f17187 | 642 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
643 | return; |
644 | } | |
a3f17187 | 645 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 646 | if (s->dirname) |
a3f17187 | 647 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 648 | if (s->fullname) |
a3f17187 | 649 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 650 | if (s->nlines) |
a3f17187 | 651 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
652 | s->nlines == 1 ? "" : "s"); |
653 | ||
a3f17187 AC |
654 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
655 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
656 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 657 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 658 | } |
c5aa993b | 659 | \f |
c906108c | 660 | |
c378eb4e | 661 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
662 | static int |
663 | is_regular_file (const char *name) | |
664 | { | |
665 | struct stat st; | |
666 | const int status = stat (name, &st); | |
667 | ||
668 | /* Stat should never fail except when the file does not exist. | |
669 | If stat fails, analyze the source of error and return True | |
670 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
671 | on obscure systems where stat does not work as expected. */ |
672 | ||
1da1a192 JB |
673 | if (status != 0) |
674 | return (errno != ENOENT); | |
675 | ||
676 | return S_ISREG (st.st_mode); | |
677 | } | |
c906108c | 678 | |
c906108c | 679 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
680 | using mode MODE in the calls to open. You cannot use this function to |
681 | create files (O_CREAT). | |
c906108c | 682 | |
014d698b EZ |
683 | OPTS specifies the function behaviour in specific cases. |
684 | ||
685 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
686 | (ie pretend the first element of PATH is "."). This also indicates |
687 | that a slash in STRING disables searching of the path (this is | |
688 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
689 | get that particular version of foo or an error message). | |
690 | ||
014d698b EZ |
691 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
692 | searched in path (we usually want this for source files but not for | |
693 | executables). | |
694 | ||
e7a8479f | 695 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 696 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
697 | have to take special pains to avoid doubling the "/" between the directory |
698 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
699 | source file name!!! | |
700 | ||
701 | If a file is found, return the descriptor. | |
702 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
703 | ||
704 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 705 | >>>> eg executable, non-directory. */ |
c906108c | 706 | int |
014d698b | 707 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 708 | int mode, char **filename_opened) |
c906108c | 709 | { |
52f0bd74 AC |
710 | int fd; |
711 | char *filename; | |
1f8cc6db AC |
712 | const char *p; |
713 | const char *p1; | |
52f0bd74 | 714 | int len; |
c906108c SS |
715 | int alloclen; |
716 | ||
fbdebf46 JK |
717 | /* The open syscall MODE parameter is not specified. */ |
718 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
719 | gdb_assert (string != NULL); |
720 | ||
721 | /* A file with an empty name cannot possibly exist. Report a failure | |
722 | without further checking. | |
723 | ||
724 | This is an optimization which also defends us against buggy | |
725 | implementations of the "stat" function. For instance, we have | |
726 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
727 | when the debugger is started with an empty argument. */ | |
728 | if (string[0] == '\0') | |
729 | { | |
730 | errno = ENOENT; | |
731 | return -1; | |
732 | } | |
fbdebf46 | 733 | |
c906108c SS |
734 | if (!path) |
735 | path = "."; | |
736 | ||
c906108c | 737 | mode |= O_BINARY; |
c906108c | 738 | |
014d698b | 739 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
740 | { |
741 | int i; | |
072b1022 DJ |
742 | |
743 | if (is_regular_file (string)) | |
744 | { | |
745 | filename = alloca (strlen (string) + 1); | |
746 | strcpy (filename, string); | |
fbdebf46 | 747 | fd = open (filename, mode); |
072b1022 DJ |
748 | if (fd >= 0) |
749 | goto done; | |
750 | } | |
751 | else | |
3f565f1e DJ |
752 | { |
753 | filename = NULL; | |
754 | fd = -1; | |
755 | } | |
072b1022 | 756 | |
014d698b EZ |
757 | if (!(opts & OPF_SEARCH_IN_PATH)) |
758 | for (i = 0; string[i]; i++) | |
759 | if (IS_DIR_SEPARATOR (string[i])) | |
760 | goto done; | |
c906108c SS |
761 | } |
762 | ||
e6d9b9c2 DE |
763 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
764 | if (HAS_DRIVE_SPEC (string)) | |
765 | string = STRIP_DRIVE_SPEC (string); | |
766 | ||
c378eb4e | 767 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
768 | while (IS_DIR_SEPARATOR(string[0])) |
769 | string++; | |
770 | ||
c906108c | 771 | /* ./foo => foo */ |
fe4e3eb8 | 772 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
773 | string += 2; |
774 | ||
775 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 776 | filename = alloca (alloclen); |
c906108c SS |
777 | fd = -1; |
778 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
779 | { | |
1f8cc6db | 780 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
781 | if (p1) |
782 | len = p1 - p; | |
783 | else | |
784 | len = strlen (p); | |
785 | ||
786 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
787 | && p[2] == 'w' && p[3] == 'd') |
788 | { | |
789 | /* Name is $cwd -- insert current directory name instead. */ | |
790 | int newlen; | |
791 | ||
c378eb4e | 792 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
793 | len = strlen (current_directory); |
794 | newlen = len + strlen (string) + 2; | |
795 | if (newlen > alloclen) | |
796 | { | |
797 | alloclen = newlen; | |
1f8cc6db | 798 | filename = alloca (alloclen); |
c5aa993b JM |
799 | } |
800 | strcpy (filename, current_directory); | |
801 | } | |
802 | else | |
803 | { | |
804 | /* Normal file name in path -- just use it. */ | |
805 | strncpy (filename, p, len); | |
806 | filename[len] = 0; | |
08001717 DE |
807 | |
808 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
809 | don't have enough information to expand it. The user *could* | |
810 | have an actual directory named '$cdir' but handling that would | |
811 | be confusing, it would mean different things in different | |
812 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
813 | We can get $cdir when loading scripts. When loading source files | |
814 | $cdir must have already been expanded to the correct value. */ | |
815 | if (strcmp (filename, "$cdir") == 0) | |
816 | continue; | |
c906108c | 817 | } |
c906108c | 818 | |
c378eb4e | 819 | /* Remove trailing slashes. */ |
fe4e3eb8 | 820 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
821 | filename[--len] = 0; |
822 | ||
c5aa993b | 823 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
824 | strcat (filename, string); |
825 | ||
1da1a192 | 826 | if (is_regular_file (filename)) |
5e987968 AS |
827 | { |
828 | fd = open (filename, mode); | |
829 | if (fd >= 0) | |
830 | break; | |
831 | } | |
c906108c SS |
832 | } |
833 | ||
c5aa993b | 834 | done: |
c906108c SS |
835 | if (filename_opened) |
836 | { | |
c378eb4e | 837 | /* If a file was opened, canonicalize its filename. Use xfullpath |
a89f66e4 | 838 | rather than gdb_realpath to avoid resolving the basename part |
c378eb4e | 839 | of filenames when the associated file is a symbolic link. This |
a89f66e4 JB |
840 | fixes a potential inconsistency between the filenames known to |
841 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 842 | if (fd < 0) |
1f8cc6db | 843 | *filename_opened = NULL; |
fe4e3eb8 | 844 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 845 | *filename_opened = xfullpath (filename); |
c906108c SS |
846 | else |
847 | { | |
c378eb4e | 848 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ |
c5aa993b | 849 | |
58d370e0 | 850 | char *f = concat (current_directory, |
5e987968 AS |
851 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
852 | ? "" : SLASH_STRING, | |
1754f103 | 853 | filename, (char *)NULL); |
433759f7 | 854 | |
a89f66e4 | 855 | *filename_opened = xfullpath (f); |
58d370e0 | 856 | xfree (f); |
c5aa993b | 857 | } |
c906108c | 858 | } |
c906108c SS |
859 | |
860 | return fd; | |
861 | } | |
862 | ||
c5aa993b | 863 | |
c906108c SS |
864 | /* This is essentially a convenience, for clients that want the behaviour |
865 | of openp, using source_path, but that really don't want the file to be | |
866 | opened but want instead just to know what the full pathname is (as | |
867 | qualified against source_path). | |
868 | ||
869 | The current working directory is searched first. | |
870 | ||
871 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
872 | set to the fully-qualified pathname. | |
873 | ||
5e987968 | 874 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 875 | int |
24f81874 | 876 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 877 | { |
c5aa993b | 878 | int fd; |
c906108c | 879 | |
014d698b | 880 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 881 | O_RDONLY, full_pathname); |
c906108c SS |
882 | if (fd < 0) |
883 | { | |
884 | *full_pathname = NULL; | |
885 | return 0; | |
886 | } | |
887 | ||
888 | close (fd); | |
889 | return 1; | |
890 | } | |
891 | ||
2f61ca93 JB |
892 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
893 | applied to PATH. */ | |
894 | ||
895 | static int | |
896 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
897 | const char *path) | |
898 | { | |
899 | const int from_len = strlen (rule->from); | |
900 | const int path_len = strlen (path); | |
901 | char *path_start; | |
902 | ||
903 | if (path_len < from_len) | |
904 | return 0; | |
905 | ||
906 | /* The substitution rules are anchored at the start of the path, | |
907 | so the path should start with rule->from. There is no filename | |
908 | comparison routine, so we need to extract the first FROM_LEN | |
909 | characters from PATH first and use that to do the comparison. */ | |
910 | ||
911 | path_start = alloca (from_len + 1); | |
912 | strncpy (path_start, path, from_len); | |
913 | path_start[from_len] = '\0'; | |
914 | ||
915 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
916 | return 0; | |
917 | ||
918 | /* Make sure that the region in the path that matches the substitution | |
919 | rule is immediately followed by a directory separator (or the end of | |
920 | string character). */ | |
921 | ||
922 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
923 | return 0; | |
924 | ||
925 | return 1; | |
926 | } | |
927 | ||
928 | /* Find the substitute-path rule that applies to PATH and return it. | |
929 | Return NULL if no rule applies. */ | |
930 | ||
931 | static struct substitute_path_rule * | |
932 | get_substitute_path_rule (const char *path) | |
933 | { | |
934 | struct substitute_path_rule *rule = substitute_path_rules; | |
935 | ||
936 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
937 | rule = rule->next; | |
938 | ||
939 | return rule; | |
940 | } | |
941 | ||
942 | /* If the user specified a source path substitution rule that applies | |
943 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 944 | be deallocated afterwards. |
2f61ca93 JB |
945 | |
946 | Return NULL if no substitution rule was specified by the user, | |
947 | or if no rule applied to the given PATH. */ | |
948 | ||
949 | static char * | |
950 | rewrite_source_path (const char *path) | |
951 | { | |
952 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
953 | char *new_path; | |
954 | int from_len; | |
955 | ||
956 | if (rule == NULL) | |
957 | return NULL; | |
958 | ||
959 | from_len = strlen (rule->from); | |
960 | ||
961 | /* Compute the rewritten path and return it. */ | |
962 | ||
963 | new_path = | |
964 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
965 | strcpy (new_path, rule->to); | |
966 | strcat (new_path, path + from_len); | |
967 | ||
968 | return new_path; | |
969 | } | |
970 | ||
57c22c6c | 971 | /* This function is capable of finding the absolute path to a |
c378eb4e MS |
972 | source file, and opening it, provided you give it a FILENAME. Both the |
973 | DIRNAME and FULLNAME are only added suggestions on where to find the file. | |
57c22c6c | 974 | |
57c22c6c BR |
975 | FILENAME should be the filename to open. |
976 | DIRNAME is the compilation directory of a particular source file. | |
977 | Only some debug formats provide this info. | |
978 | FULLNAME can be the last known absolute path to the file in question. | |
86991504 DE |
979 | Space for the path must have been malloc'd. If a path substitution |
980 | is applied we free the old value and set a new one. | |
57c22c6c BR |
981 | |
982 | On Success | |
c378eb4e | 983 | A valid file descriptor is returned (the return value is positive). |
57c22c6c | 984 | FULLNAME is set to the absolute path to the file just opened. |
86991504 | 985 | The caller is responsible for freeing FULLNAME. |
57c22c6c BR |
986 | |
987 | On Failure | |
c378eb4e | 988 | An invalid file descriptor is returned (the return value is negative). |
57c22c6c | 989 | FULLNAME is set to NULL. */ |
86991504 | 990 | |
ccefe4c4 | 991 | int |
e2357892 | 992 | find_and_open_source (const char *filename, |
5e987968 AS |
993 | const char *dirname, |
994 | char **fullname) | |
c906108c SS |
995 | { |
996 | char *path = source_path; | |
31889e00 | 997 | const char *p; |
c906108c | 998 | int result; |
c906108c | 999 | |
c378eb4e | 1000 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1001 | |
57c22c6c | 1002 | if (*fullname) |
c906108c | 1003 | { |
2f61ca93 JB |
1004 | /* The user may have requested that source paths be rewritten |
1005 | according to substitution rules he provided. If a substitution | |
1006 | rule applies to this path, then apply it. */ | |
1007 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
1008 | ||
1009 | if (rewritten_fullname != NULL) | |
1010 | { | |
1011 | xfree (*fullname); | |
1012 | *fullname = rewritten_fullname; | |
1013 | } | |
1014 | ||
57c22c6c | 1015 | result = open (*fullname, OPEN_MODE); |
c906108c | 1016 | if (result >= 0) |
c5aa993b | 1017 | return result; |
c378eb4e | 1018 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1019 | xfree (*fullname); |
57c22c6c | 1020 | *fullname = NULL; |
c906108c SS |
1021 | } |
1022 | ||
57c22c6c | 1023 | if (dirname != NULL) |
c906108c | 1024 | { |
2f61ca93 JB |
1025 | /* If necessary, rewrite the compilation directory name according |
1026 | to the source path substitution rules specified by the user. */ | |
1027 | ||
1028 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1029 | ||
1030 | if (rewritten_dirname != NULL) | |
1031 | { | |
1032 | make_cleanup (xfree, rewritten_dirname); | |
1033 | dirname = rewritten_dirname; | |
1034 | } | |
1035 | ||
c378eb4e MS |
1036 | /* Replace a path entry of $cdir with the compilation directory |
1037 | name. */ | |
c906108c SS |
1038 | #define cdir_len 5 |
1039 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1040 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1041 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1042 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1043 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1044 | { |
1045 | int len; | |
1046 | ||
1047 | path = (char *) | |
57c22c6c | 1048 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1049 | len = p - source_path; |
c5aa993b | 1050 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1051 | strcpy (path + len, dirname); /* new stuff */ |
1052 | strcat (path + len, source_path + len + cdir_len); /* After | |
1053 | $cdir */ | |
c906108c SS |
1054 | } |
1055 | } | |
8da2a1df DJ |
1056 | |
1057 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1058 | { |
8da2a1df DJ |
1059 | /* If filename is absolute path, try the source path |
1060 | substitution on it. */ | |
56163ce1 JB |
1061 | char *rewritten_filename = rewrite_source_path (filename); |
1062 | ||
1063 | if (rewritten_filename != NULL) | |
1064 | { | |
1065 | make_cleanup (xfree, rewritten_filename); | |
1066 | filename = rewritten_filename; | |
1067 | } | |
1068 | } | |
c906108c | 1069 | |
fbdebf46 | 1070 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1071 | if (result < 0) |
1072 | { | |
c378eb4e | 1073 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1074 | p = lbasename (filename); |
1075 | if (p != filename) | |
fbdebf46 | 1076 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1077 | } |
c906108c | 1078 | |
c906108c SS |
1079 | return result; |
1080 | } | |
1081 | ||
57c22c6c BR |
1082 | /* Open a source file given a symtab S. Returns a file descriptor or |
1083 | negative number for error. | |
1084 | ||
c378eb4e | 1085 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1086 | |
1087 | int | |
1088 | open_source_file (struct symtab *s) | |
1089 | { | |
5e987968 AS |
1090 | if (!s) |
1091 | return -1; | |
57c22c6c | 1092 | |
e2357892 | 1093 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1094 | } |
1095 | ||
1096 | /* Finds the fullname that a symtab represents. | |
c906108c | 1097 | |
f132ba9d | 1098 | If this functions finds the fullname, it will save it in s->fullname |
57c22c6c BR |
1099 | and it will also return the value. |
1100 | ||
1101 | If this function fails to find the file that this symtab represents, | |
f132ba9d | 1102 | NULL will be returned and s->fullname will be set to NULL. */ |
c906108c | 1103 | char * |
57c22c6c | 1104 | symtab_to_fullname (struct symtab *s) |
c906108c | 1105 | { |
57c22c6c | 1106 | int r; |
c906108c SS |
1107 | |
1108 | if (!s) | |
1109 | return NULL; | |
1110 | ||
57c22c6c | 1111 | /* Don't check s->fullname here, the file could have been |
c378eb4e | 1112 | deleted/moved/..., look for it again. */ |
e2357892 | 1113 | r = find_and_open_source (s->filename, s->dirname, &s->fullname); |
c906108c | 1114 | |
9fe4a216 | 1115 | if (r >= 0) |
5e987968 AS |
1116 | { |
1117 | close (r); | |
1118 | return s->fullname; | |
1119 | } | |
c906108c | 1120 | |
57c22c6c BR |
1121 | return NULL; |
1122 | } | |
5e987968 | 1123 | \f |
c906108c SS |
1124 | /* Create and initialize the table S->line_charpos that records |
1125 | the positions of the lines in the source file, which is assumed | |
1126 | to be open on descriptor DESC. | |
1127 | All set S->nlines to the number of such lines. */ | |
1128 | ||
1129 | void | |
fba45db2 | 1130 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1131 | { |
1132 | struct stat st; | |
52f0bd74 | 1133 | char *data, *p, *end; |
c906108c SS |
1134 | int nlines = 0; |
1135 | int lines_allocated = 1000; | |
1136 | int *line_charpos; | |
1137 | long mtime = 0; | |
1138 | int size; | |
1139 | ||
be8ca11b | 1140 | gdb_assert (s); |
7936743b | 1141 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1142 | if (fstat (desc, &st) < 0) |
1143 | perror_with_name (s->filename); | |
1144 | ||
be8ca11b | 1145 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1146 | mtime = s->objfile->mtime; |
c906108c | 1147 | else if (exec_bfd) |
c04ea773 | 1148 | mtime = exec_bfd_mtime; |
c906108c SS |
1149 | |
1150 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1151 | warning (_("Source file is more recent than executable.")); |
c906108c SS |
1152 | |
1153 | #ifdef LSEEK_NOT_LINEAR | |
1154 | { | |
1155 | char c; | |
1156 | ||
c378eb4e | 1157 | /* Have to read it byte by byte to find out where the chars live. */ |
c906108c SS |
1158 | |
1159 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
1160 | nlines = 1; | |
c5aa993b | 1161 | while (myread (desc, &c, 1) > 0) |
c906108c | 1162 | { |
c5aa993b | 1163 | if (c == '\n') |
c906108c | 1164 | { |
c5aa993b | 1165 | if (nlines == lines_allocated) |
c906108c SS |
1166 | { |
1167 | lines_allocated *= 2; | |
1168 | line_charpos = | |
0efffb96 AC |
1169 | (int *) xrealloc ((char *) line_charpos, |
1170 | sizeof (int) * lines_allocated); | |
c906108c SS |
1171 | } |
1172 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | #else /* lseek linear. */ | |
1177 | { | |
1178 | struct cleanup *old_cleanups; | |
1179 | ||
1180 | /* st_size might be a large type, but we only support source files whose | |
1181 | size fits in an int. */ | |
1182 | size = (int) st.st_size; | |
1183 | ||
1184 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1185 | run into various kinds of limits on stack size. */ | |
1186 | data = (char *) xmalloc (size); | |
b8c9b27d | 1187 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1188 | |
1189 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1190 | size = myread (desc, data, size); | |
1191 | if (size < 0) | |
1192 | perror_with_name (s->filename); | |
1193 | end = data + size; | |
1194 | p = data; | |
1195 | line_charpos[0] = 0; | |
1196 | nlines = 1; | |
1197 | while (p != end) | |
1198 | { | |
1199 | if (*p++ == '\n' | |
c5aa993b | 1200 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1201 | && p != end) |
1202 | { | |
1203 | if (nlines == lines_allocated) | |
1204 | { | |
1205 | lines_allocated *= 2; | |
1206 | line_charpos = | |
0efffb96 AC |
1207 | (int *) xrealloc ((char *) line_charpos, |
1208 | sizeof (int) * lines_allocated); | |
c906108c SS |
1209 | } |
1210 | line_charpos[nlines++] = p - data; | |
1211 | } | |
1212 | } | |
1213 | do_cleanups (old_cleanups); | |
1214 | } | |
1215 | #endif /* lseek linear. */ | |
1216 | s->nlines = nlines; | |
1217 | s->line_charpos = | |
0efffb96 | 1218 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1219 | |
1220 | } | |
1221 | ||
1222 | /* Return the character position of a line LINE in symtab S. | |
1223 | Return 0 if anything is invalid. */ | |
1224 | ||
c5aa993b | 1225 | #if 0 /* Currently unused */ |
c906108c SS |
1226 | |
1227 | int | |
fba45db2 | 1228 | source_line_charpos (struct symtab *s, int line) |
c906108c | 1229 | { |
c5aa993b JM |
1230 | if (!s) |
1231 | return 0; | |
1232 | if (!s->line_charpos || line <= 0) | |
1233 | return 0; | |
c906108c SS |
1234 | if (line > s->nlines) |
1235 | line = s->nlines; | |
1236 | return s->line_charpos[line - 1]; | |
1237 | } | |
1238 | ||
1239 | /* Return the line number of character position POS in symtab S. */ | |
1240 | ||
1241 | int | |
aa1ee363 | 1242 | source_charpos_line (struct symtab *s, int chr) |
c906108c | 1243 | { |
52f0bd74 AC |
1244 | int line = 0; |
1245 | int *lnp; | |
c5aa993b JM |
1246 | |
1247 | if (s == 0 || s->line_charpos == 0) | |
1248 | return 0; | |
c906108c | 1249 | lnp = s->line_charpos; |
c378eb4e | 1250 | /* Files are usually short, so sequential search is Ok. */ |
c5aa993b | 1251 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
1252 | { |
1253 | line++; | |
1254 | lnp++; | |
1255 | } | |
1256 | if (line >= s->nlines) | |
1257 | line = s->nlines; | |
1258 | return line; | |
1259 | } | |
1260 | ||
c5aa993b | 1261 | #endif /* 0 */ |
c906108c | 1262 | \f |
c5aa993b | 1263 | |
c906108c SS |
1264 | /* Get full pathname and line number positions for a symtab. |
1265 | Return nonzero if line numbers may have changed. | |
1266 | Set *FULLNAME to actual name of the file as found by `openp', | |
1267 | or to 0 if the file is not found. */ | |
1268 | ||
1269 | static int | |
fba45db2 | 1270 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1271 | { |
52f0bd74 | 1272 | int desc, linenums_changed = 0; |
9fe4a216 | 1273 | struct cleanup *cleanups; |
c5aa993b | 1274 | |
c906108c SS |
1275 | desc = open_source_file (s); |
1276 | if (desc < 0) | |
1277 | { | |
1278 | if (fullname) | |
1279 | *fullname = NULL; | |
1280 | return 0; | |
c5aa993b | 1281 | } |
9fe4a216 | 1282 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1283 | if (fullname) |
1284 | *fullname = s->fullname; | |
c5aa993b JM |
1285 | if (s->line_charpos == 0) |
1286 | linenums_changed = 1; | |
1287 | if (linenums_changed) | |
1288 | find_source_lines (s, desc); | |
9fe4a216 | 1289 | do_cleanups (cleanups); |
c906108c SS |
1290 | return linenums_changed; |
1291 | } | |
1292 | ||
1293 | /* Print text describing the full name of the source file S | |
1294 | and the line number LINE and its corresponding character position. | |
1295 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1296 | can easily find it. | |
1297 | ||
1298 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1299 | ||
1300 | Return 1 if successful, 0 if could not find the file. */ | |
1301 | ||
1302 | int | |
fba45db2 KB |
1303 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1304 | CORE_ADDR pc) | |
c906108c SS |
1305 | { |
1306 | if (s->line_charpos == 0) | |
c5aa993b | 1307 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1308 | if (s->fullname == 0) |
1309 | return 0; | |
1310 | if (line > s->nlines) | |
1311 | /* Don't index off the end of the line_charpos array. */ | |
1312 | return 0; | |
1313 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1314 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1315 | |
1316 | current_source_line = line; | |
1317 | first_line_listed = line; | |
1318 | last_line_listed = line; | |
1319 | current_source_symtab = s; | |
1320 | return 1; | |
1321 | } | |
c906108c | 1322 | \f |
c5aa993b | 1323 | |
c906108c | 1324 | /* Print source lines from the file of symtab S, |
c378eb4e | 1325 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c | 1326 | |
a14ed312 KB |
1327 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1328 | int noerror); | |
c906108c | 1329 | static void |
fba45db2 | 1330 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1331 | { |
52f0bd74 AC |
1332 | int c; |
1333 | int desc; | |
f4dfd9c0 | 1334 | int noprint = 0; |
52f0bd74 | 1335 | FILE *stream; |
c906108c | 1336 | int nlines = stopline - line; |
7c8a8b04 | 1337 | struct cleanup *cleanup; |
c906108c | 1338 | |
c378eb4e | 1339 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1340 | current_source_symtab = s; |
1341 | current_source_line = line; | |
1342 | first_line_listed = line; | |
1343 | ||
3e43a32a | 1344 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1345 | number. */ |
8b93c638 JM |
1346 | if (ui_out_test_flags (uiout, ui_source_list)) |
1347 | { | |
c378eb4e | 1348 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1349 | if ((s != last_source_visited) || (!last_source_error)) |
1350 | { | |
1351 | last_source_visited = s; | |
1352 | desc = open_source_file (s); | |
1353 | } | |
1354 | else | |
1355 | { | |
1356 | desc = last_source_error; | |
1357 | noerror = 1; | |
1358 | } | |
8b93c638 JM |
1359 | } |
1360 | else | |
1361 | { | |
f4dfd9c0 | 1362 | desc = last_source_error; |
8b93c638 | 1363 | noerror = 1; |
f4dfd9c0 | 1364 | noprint = 1; |
8b93c638 | 1365 | } |
c906108c | 1366 | |
f4dfd9c0 | 1367 | if (desc < 0 || noprint) |
c906108c SS |
1368 | { |
1369 | last_source_error = desc; | |
1370 | ||
c5aa993b JM |
1371 | if (!noerror) |
1372 | { | |
c906108c SS |
1373 | char *name = alloca (strlen (s->filename) + 100); |
1374 | sprintf (name, "%d\t%s", line, s->filename); | |
1375 | print_sys_errmsg (name, errno); | |
1376 | } | |
1377 | else | |
8b93c638 JM |
1378 | ui_out_field_int (uiout, "line", line); |
1379 | ui_out_text (uiout, "\tin "); | |
1380 | ui_out_field_string (uiout, "file", s->filename); | |
1381 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1382 | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | last_source_error = 0; | |
1387 | ||
1388 | if (s->line_charpos == 0) | |
1389 | find_source_lines (s, desc); | |
1390 | ||
1391 | if (line < 1 || line > s->nlines) | |
1392 | { | |
1393 | close (desc); | |
8a3fe4f8 | 1394 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1395 | line, s->filename, s->nlines); |
1396 | } | |
1397 | ||
1398 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1399 | { | |
1400 | close (desc); | |
1401 | perror_with_name (s->filename); | |
1402 | } | |
1403 | ||
1404 | stream = fdopen (desc, FDOPEN_MODE); | |
1405 | clearerr (stream); | |
7c8a8b04 | 1406 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1407 | |
1408 | while (nlines-- > 0) | |
1409 | { | |
8b93c638 JM |
1410 | char buf[20]; |
1411 | ||
1412 | c = fgetc (stream); | |
1413 | if (c == EOF) | |
1414 | break; | |
1415 | last_line_listed = current_source_line; | |
1416 | sprintf (buf, "%d\t", current_source_line++); | |
1417 | ui_out_text (uiout, buf); | |
1418 | do | |
1419 | { | |
1420 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1421 | { | |
1422 | sprintf (buf, "^%c", c + 0100); | |
1423 | ui_out_text (uiout, buf); | |
1424 | } | |
1425 | else if (c == 0177) | |
1426 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1427 | else if (c == '\r') |
1428 | { | |
1429 | /* Skip a \r character, but only before a \n. */ | |
1430 | int c1 = fgetc (stream); | |
1431 | ||
1432 | if (c1 != '\n') | |
1433 | printf_filtered ("^%c", c + 0100); | |
1434 | if (c1 != EOF) | |
1435 | ungetc (c1, stream); | |
1436 | } | |
8b93c638 JM |
1437 | else |
1438 | { | |
1439 | sprintf (buf, "%c", c); | |
1440 | ui_out_text (uiout, buf); | |
1441 | } | |
1442 | } | |
1443 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1444 | } |
1445 | ||
7c8a8b04 | 1446 | do_cleanups (cleanup); |
c906108c SS |
1447 | } |
1448 | \f | |
1449 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1450 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1451 | not the command line version, then the source is shown in the source |
c378eb4e | 1452 | window otherwise it is simply printed. */ |
c906108c | 1453 | |
c5aa993b | 1454 | void |
fba45db2 | 1455 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1456 | { |
c5aa993b | 1457 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1458 | } |
1459 | \f | |
c906108c SS |
1460 | /* Print info on range of pc's in a specified line. */ |
1461 | ||
1462 | static void | |
fba45db2 | 1463 | line_info (char *arg, int from_tty) |
c906108c SS |
1464 | { |
1465 | struct symtabs_and_lines sals; | |
1466 | struct symtab_and_line sal; | |
1467 | CORE_ADDR start_pc, end_pc; | |
1468 | int i; | |
1469 | ||
fe39c653 | 1470 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1471 | |
1472 | if (arg == 0) | |
1473 | { | |
1474 | sal.symtab = current_source_symtab; | |
1475 | sal.line = last_line_listed; | |
1476 | sals.nelts = 1; | |
1477 | sals.sals = (struct symtab_and_line *) | |
1478 | xmalloc (sizeof (struct symtab_and_line)); | |
1479 | sals.sals[0] = sal; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1484 | |
c906108c SS |
1485 | dont_repeat (); |
1486 | } | |
1487 | ||
1488 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1489 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1490 | for (i = 0; i < sals.nelts; i++) |
1491 | { | |
1492 | sal = sals.sals[i]; | |
c5aa993b | 1493 | |
c906108c SS |
1494 | if (sal.symtab == 0) |
1495 | { | |
5af949e3 UW |
1496 | struct gdbarch *gdbarch = get_current_arch (); |
1497 | ||
a3f17187 | 1498 | printf_filtered (_("No line number information available")); |
c906108c SS |
1499 | if (sal.pc != 0) |
1500 | { | |
1501 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1502 | user about a source line, at least let them have the symbolic |
1503 | address. */ | |
c906108c SS |
1504 | printf_filtered (" for address "); |
1505 | wrap_here (" "); | |
5af949e3 | 1506 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1507 | } |
1508 | else | |
1509 | printf_filtered ("."); | |
1510 | printf_filtered ("\n"); | |
1511 | } | |
1512 | else if (sal.line > 0 | |
1513 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1514 | { | |
5af949e3 UW |
1515 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1516 | ||
c906108c SS |
1517 | if (start_pc == end_pc) |
1518 | { | |
1519 | printf_filtered ("Line %d of \"%s\"", | |
1520 | sal.line, sal.symtab->filename); | |
1521 | wrap_here (" "); | |
1522 | printf_filtered (" is at address "); | |
5af949e3 | 1523 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1524 | wrap_here (" "); |
1525 | printf_filtered (" but contains no code.\n"); | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | printf_filtered ("Line %d of \"%s\"", | |
1530 | sal.line, sal.symtab->filename); | |
1531 | wrap_here (" "); | |
1532 | printf_filtered (" starts at address "); | |
5af949e3 | 1533 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1534 | wrap_here (" "); |
1535 | printf_filtered (" and ends at "); | |
5af949e3 | 1536 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1537 | printf_filtered (".\n"); |
1538 | } | |
1539 | ||
1540 | /* x/i should display this line's code. */ | |
5af949e3 | 1541 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1542 | |
1543 | /* Repeating "info line" should do the following line. */ | |
1544 | last_line_listed = sal.line + 1; | |
1545 | ||
1546 | /* If this is the only line, show the source code. If it could | |
1547 | not find the file, don't do anything special. */ | |
1548 | if (annotation_level && sals.nelts == 1) | |
1549 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1550 | } | |
1551 | else | |
1552 | /* Is there any case in which we get here, and have an address | |
1553 | which the user would want to see? If we have debugging symbols | |
1554 | and no line numbers? */ | |
a3f17187 | 1555 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1556 | sal.line, sal.symtab->filename); |
1557 | } | |
b8c9b27d | 1558 | xfree (sals.sals); |
c906108c SS |
1559 | } |
1560 | \f | |
1561 | /* Commands to search the source file for a regexp. */ | |
1562 | ||
c906108c | 1563 | static void |
fba45db2 | 1564 | forward_search_command (char *regex, int from_tty) |
c906108c | 1565 | { |
52f0bd74 AC |
1566 | int c; |
1567 | int desc; | |
1568 | FILE *stream; | |
c906108c SS |
1569 | int line; |
1570 | char *msg; | |
9fe4a216 | 1571 | struct cleanup *cleanups; |
c906108c | 1572 | |
c906108c | 1573 | line = last_line_listed + 1; |
c906108c SS |
1574 | |
1575 | msg = (char *) re_comp (regex); | |
1576 | if (msg) | |
8a3fe4f8 | 1577 | error (("%s"), msg); |
c906108c SS |
1578 | |
1579 | if (current_source_symtab == 0) | |
1580 | select_source_symtab (0); | |
1581 | ||
1582 | desc = open_source_file (current_source_symtab); | |
1583 | if (desc < 0) | |
1584 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1585 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1586 | |
1587 | if (current_source_symtab->line_charpos == 0) | |
1588 | find_source_lines (current_source_symtab, desc); | |
1589 | ||
1590 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1591 | error (_("Expression not found")); |
c906108c SS |
1592 | |
1593 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1594 | perror_with_name (current_source_symtab->filename); |
c906108c | 1595 | |
9fe4a216 | 1596 | discard_cleanups (cleanups); |
c906108c SS |
1597 | stream = fdopen (desc, FDOPEN_MODE); |
1598 | clearerr (stream); | |
9fe4a216 | 1599 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1600 | while (1) |
1601 | { | |
1602 | static char *buf = NULL; | |
aa1ee363 | 1603 | char *p; |
c5aa993b JM |
1604 | int cursize, newsize; |
1605 | ||
1606 | cursize = 256; | |
1607 | buf = xmalloc (cursize); | |
1608 | p = buf; | |
1609 | ||
1610 | c = getc (stream); | |
1611 | if (c == EOF) | |
1612 | break; | |
1613 | do | |
c906108c | 1614 | { |
c5aa993b JM |
1615 | *p++ = c; |
1616 | if (p - buf == cursize) | |
1617 | { | |
1618 | newsize = cursize + cursize / 2; | |
1619 | buf = xrealloc (buf, newsize); | |
1620 | p = buf + cursize; | |
1621 | cursize = newsize; | |
1622 | } | |
c906108c | 1623 | } |
c5aa993b | 1624 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1625 | |
7be570e7 JM |
1626 | /* Remove the \r, if any, at the end of the line, otherwise |
1627 | regular expressions that end with $ or \n won't work. */ | |
1628 | if (p - buf > 1 && p[-2] == '\r') | |
1629 | { | |
1630 | p--; | |
1631 | p[-1] = '\n'; | |
1632 | } | |
7be570e7 | 1633 | |
c378eb4e | 1634 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1635 | *p = 0; |
1636 | if (re_exec (buf) > 0) | |
1637 | { | |
c378eb4e | 1638 | /* Match! */ |
e681b284 | 1639 | do_cleanups (cleanups); |
c5aa993b | 1640 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1641 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1642 | current_source_line = max (line - lines_to_list / 2, 1); |
1643 | return; | |
1644 | } | |
1645 | line++; | |
1646 | } | |
c906108c | 1647 | |
a3f17187 | 1648 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1649 | do_cleanups (cleanups); |
c906108c SS |
1650 | } |
1651 | ||
c906108c | 1652 | static void |
fba45db2 | 1653 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1654 | { |
52f0bd74 AC |
1655 | int c; |
1656 | int desc; | |
1657 | FILE *stream; | |
c906108c SS |
1658 | int line; |
1659 | char *msg; | |
9fe4a216 | 1660 | struct cleanup *cleanups; |
063190b6 | 1661 | |
c906108c | 1662 | line = last_line_listed - 1; |
c906108c SS |
1663 | |
1664 | msg = (char *) re_comp (regex); | |
1665 | if (msg) | |
8a3fe4f8 | 1666 | error (("%s"), msg); |
c906108c SS |
1667 | |
1668 | if (current_source_symtab == 0) | |
1669 | select_source_symtab (0); | |
1670 | ||
1671 | desc = open_source_file (current_source_symtab); | |
1672 | if (desc < 0) | |
1673 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1674 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1675 | |
1676 | if (current_source_symtab->line_charpos == 0) | |
1677 | find_source_lines (current_source_symtab, desc); | |
1678 | ||
1679 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1680 | error (_("Expression not found")); |
c906108c SS |
1681 | |
1682 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1683 | perror_with_name (current_source_symtab->filename); |
c906108c | 1684 | |
9fe4a216 | 1685 | discard_cleanups (cleanups); |
c906108c SS |
1686 | stream = fdopen (desc, FDOPEN_MODE); |
1687 | clearerr (stream); | |
9fe4a216 | 1688 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1689 | while (line > 1) |
1690 | { | |
c378eb4e MS |
1691 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1692 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1693 | char *p = buf; |
c906108c SS |
1694 | |
1695 | c = getc (stream); | |
1696 | if (c == EOF) | |
1697 | break; | |
c5aa993b JM |
1698 | do |
1699 | { | |
1700 | *p++ = c; | |
1701 | } | |
1702 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1703 | |
7be570e7 JM |
1704 | /* Remove the \r, if any, at the end of the line, otherwise |
1705 | regular expressions that end with $ or \n won't work. */ | |
1706 | if (p - buf > 1 && p[-2] == '\r') | |
1707 | { | |
1708 | p--; | |
1709 | p[-1] = '\n'; | |
1710 | } | |
7be570e7 | 1711 | |
c906108c SS |
1712 | /* We now have a source line in buf; null terminate and match. */ |
1713 | *p = 0; | |
1714 | if (re_exec (buf) > 0) | |
1715 | { | |
c378eb4e | 1716 | /* Match! */ |
e681b284 | 1717 | do_cleanups (cleanups); |
c5aa993b | 1718 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1719 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1720 | current_source_line = max (line - lines_to_list / 2, 1); |
1721 | return; | |
1722 | } | |
1723 | line--; | |
1724 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1725 | { | |
e681b284 | 1726 | do_cleanups (cleanups); |
c906108c SS |
1727 | perror_with_name (current_source_symtab->filename); |
1728 | } | |
1729 | } | |
1730 | ||
a3f17187 | 1731 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1732 | do_cleanups (cleanups); |
c906108c SS |
1733 | return; |
1734 | } | |
2f61ca93 JB |
1735 | |
1736 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1737 | ||
1738 | static void | |
1739 | strip_trailing_directory_separator (char *path) | |
1740 | { | |
1741 | const int last = strlen (path) - 1; | |
1742 | ||
1743 | if (last < 0) | |
1744 | return; /* No stripping is needed if PATH is the empty string. */ | |
1745 | ||
1746 | if (IS_DIR_SEPARATOR (path[last])) | |
1747 | path[last] = '\0'; | |
1748 | } | |
1749 | ||
1750 | /* Return the path substitution rule that matches FROM. | |
1751 | Return NULL if no rule matches. */ | |
1752 | ||
1753 | static struct substitute_path_rule * | |
1754 | find_substitute_path_rule (const char *from) | |
1755 | { | |
1756 | struct substitute_path_rule *rule = substitute_path_rules; | |
1757 | ||
1758 | while (rule != NULL) | |
1759 | { | |
1760 | if (FILENAME_CMP (rule->from, from) == 0) | |
1761 | return rule; | |
1762 | rule = rule->next; | |
1763 | } | |
1764 | ||
1765 | return NULL; | |
1766 | } | |
1767 | ||
1768 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1769 | The new rule will replace FROM into TO. */ | |
1770 | ||
29b0e8a2 | 1771 | void |
2f61ca93 JB |
1772 | add_substitute_path_rule (char *from, char *to) |
1773 | { | |
1774 | struct substitute_path_rule *rule; | |
1775 | struct substitute_path_rule *new_rule; | |
1776 | ||
1777 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1778 | new_rule->from = xstrdup (from); | |
1779 | new_rule->to = xstrdup (to); | |
1780 | new_rule->next = NULL; | |
1781 | ||
1782 | /* If the list of rules are empty, then insert the new rule | |
1783 | at the head of the list. */ | |
1784 | ||
1785 | if (substitute_path_rules == NULL) | |
1786 | { | |
1787 | substitute_path_rules = new_rule; | |
1788 | return; | |
1789 | } | |
1790 | ||
1791 | /* Otherwise, skip to the last rule in our list and then append | |
1792 | the new rule. */ | |
1793 | ||
1794 | rule = substitute_path_rules; | |
1795 | while (rule->next != NULL) | |
1796 | rule = rule->next; | |
1797 | ||
1798 | rule->next = new_rule; | |
1799 | } | |
1800 | ||
1801 | /* Remove the given source path substitution rule from the current list | |
1802 | of rules. The memory allocated for that rule is also deallocated. */ | |
1803 | ||
1804 | static void | |
1805 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1806 | { | |
1807 | if (rule == substitute_path_rules) | |
1808 | substitute_path_rules = rule->next; | |
1809 | else | |
1810 | { | |
1811 | struct substitute_path_rule *prev = substitute_path_rules; | |
1812 | ||
1813 | while (prev != NULL && prev->next != rule) | |
1814 | prev = prev->next; | |
1815 | ||
1816 | gdb_assert (prev != NULL); | |
1817 | ||
1818 | prev->next = rule->next; | |
1819 | } | |
1820 | ||
1821 | xfree (rule->from); | |
1822 | xfree (rule->to); | |
1823 | xfree (rule); | |
1824 | } | |
1825 | ||
1826 | /* Implement the "show substitute-path" command. */ | |
1827 | ||
1828 | static void | |
1829 | show_substitute_path_command (char *args, int from_tty) | |
1830 | { | |
1831 | struct substitute_path_rule *rule = substitute_path_rules; | |
1832 | char **argv; | |
1833 | char *from = NULL; | |
1834 | ||
d1a41061 | 1835 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1836 | make_cleanup_freeargv (argv); |
1837 | ||
1838 | /* We expect zero or one argument. */ | |
1839 | ||
1840 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1841 | error (_("Too many arguments in command")); | |
1842 | ||
1843 | if (argv != NULL && argv[0] != NULL) | |
1844 | from = argv[0]; | |
1845 | ||
1846 | /* Print the substitution rules. */ | |
1847 | ||
1848 | if (from != NULL) | |
1849 | printf_filtered | |
1850 | (_("Source path substitution rule matching `%s':\n"), from); | |
1851 | else | |
1852 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1853 | ||
1854 | while (rule != NULL) | |
1855 | { | |
1856 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1857 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1858 | rule = rule->next; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | /* Implement the "unset substitute-path" command. */ | |
1863 | ||
1864 | static void | |
1865 | unset_substitute_path_command (char *args, int from_tty) | |
1866 | { | |
1867 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1868 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1869 | char *from = NULL; |
1870 | int rule_found = 0; | |
1871 | ||
1872 | /* This function takes either 0 or 1 argument. */ | |
1873 | ||
77accacd | 1874 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1875 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1876 | error (_("Incorrect usage, too many arguments in command")); | |
1877 | ||
1878 | if (argv != NULL && argv[0] != NULL) | |
1879 | from = argv[0]; | |
1880 | ||
1881 | /* If the user asked for all the rules to be deleted, ask him | |
1882 | to confirm and give him a chance to abort before the action | |
1883 | is performed. */ | |
1884 | ||
1885 | if (from == NULL | |
1886 | && !query (_("Delete all source path substitution rules? "))) | |
1887 | error (_("Canceled")); | |
1888 | ||
1889 | /* Delete the rule matching the argument. No argument means that | |
1890 | all rules should be deleted. */ | |
1891 | ||
1892 | while (rule != NULL) | |
1893 | { | |
1894 | struct substitute_path_rule *next = rule->next; | |
1895 | ||
1896 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1897 | { | |
1898 | delete_substitute_path_rule (rule); | |
1899 | rule_found = 1; | |
1900 | } | |
1901 | ||
1902 | rule = next; | |
1903 | } | |
1904 | ||
1905 | /* If the user asked for a specific rule to be deleted but | |
1906 | we could not find it, then report an error. */ | |
1907 | ||
1908 | if (from != NULL && !rule_found) | |
1909 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1910 | |
1911 | forget_cached_source_info (); | |
2f61ca93 JB |
1912 | } |
1913 | ||
1914 | /* Add a new source path substitution rule. */ | |
1915 | ||
1916 | static void | |
1917 | set_substitute_path_command (char *args, int from_tty) | |
1918 | { | |
2f61ca93 JB |
1919 | char **argv; |
1920 | struct substitute_path_rule *rule; | |
1921 | ||
d1a41061 | 1922 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1923 | make_cleanup_freeargv (argv); |
1924 | ||
1925 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1926 | error (_("Incorrect usage, too few arguments in command")); | |
1927 | ||
1928 | if (argv[2] != NULL) | |
1929 | error (_("Incorrect usage, too many arguments in command")); | |
1930 | ||
1931 | if (*(argv[0]) == '\0') | |
1932 | error (_("First argument must be at least one character long")); | |
1933 | ||
1934 | /* Strip any trailing directory separator character in either FROM | |
1935 | or TO. The substitution rule already implicitly contains them. */ | |
1936 | strip_trailing_directory_separator (argv[0]); | |
1937 | strip_trailing_directory_separator (argv[1]); | |
1938 | ||
1939 | /* If a rule with the same "from" was previously defined, then | |
1940 | delete it. This new rule replaces it. */ | |
1941 | ||
1942 | rule = find_substitute_path_rule (argv[0]); | |
1943 | if (rule != NULL) | |
1944 | delete_substitute_path_rule (rule); | |
1945 | ||
1946 | /* Insert the new substitution rule. */ | |
1947 | ||
1948 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1949 | forget_cached_source_info (); |
2f61ca93 JB |
1950 | } |
1951 | ||
c906108c SS |
1952 | \f |
1953 | void | |
fba45db2 | 1954 | _initialize_source (void) |
c906108c SS |
1955 | { |
1956 | struct cmd_list_element *c; | |
433759f7 | 1957 | |
c906108c SS |
1958 | current_source_symtab = 0; |
1959 | init_source_path (); | |
1960 | ||
1961 | /* The intention is to use POSIX Basic Regular Expressions. | |
1962 | Always use the GNU regex routine for consistency across all hosts. | |
1963 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1964 | just an approximation. */ | |
1965 | re_set_syntax (RE_SYNTAX_GREP); | |
1966 | ||
1a966eab AC |
1967 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1968 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1969 | Forget cached info on source file locations and line positions.\n\ |
1970 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1971 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1972 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1973 | &cmdlist); |
1974 | ||
1975 | if (dbx_commands) | |
c5aa993b | 1976 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1977 | |
5ba2abeb | 1978 | set_cmd_completer (c, filename_completer); |
c906108c | 1979 | |
99e7ae30 DE |
1980 | add_setshow_optional_filename_cmd ("directories", |
1981 | class_files, | |
1982 | &source_path, | |
1983 | _("\ | |
1984 | Set the search path for finding source files."), | |
1985 | _("\ | |
1986 | Show the search path for finding source files."), | |
1987 | _("\ | |
c906108c | 1988 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1989 | $cdir in the path means the compilation directory of the source file.\n\ |
1990 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1991 | appending these directories if necessary.\n\ | |
1992 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1993 | set_directories_command, | |
1994 | show_directories_command, | |
1995 | &setlist, &showlist); | |
c906108c SS |
1996 | |
1997 | if (xdb_commands) | |
1998 | { | |
c5aa993b | 1999 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 2000 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 2001 | Current search path for finding source files.\n\ |
c906108c | 2002 | $cwd in the path means the current working directory.\n\ |
1a966eab | 2003 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 2004 | &cmdlist); |
c906108c SS |
2005 | } |
2006 | ||
2007 | add_info ("source", source_info, | |
1bedd215 | 2008 | _("Information about the current source file.")); |
c906108c | 2009 | |
1bedd215 AC |
2010 | add_info ("line", line_info, _("\ |
2011 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
2012 | Line can be specified as\n\ |
2013 | LINENUM, to list around that line in current file,\n\ | |
2014 | FILE:LINENUM, to list around that line in that file,\n\ | |
2015 | FUNCTION, to list around beginning of that function,\n\ | |
2016 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
2017 | Default is to describe the last source line that was listed.\n\n\ |
2018 | This sets the default address for \"x\" to the line's first instruction\n\ | |
2019 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 2020 | The address is also stored as the value of \"$_\".")); |
c906108c | 2021 | |
1bedd215 AC |
2022 | add_com ("forward-search", class_files, forward_search_command, _("\ |
2023 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
2024 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
2025 | add_com_alias ("search", "forward-search", class_files, 0); |
2026 | ||
1bedd215 AC |
2027 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
2028 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
2029 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 2030 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
2031 | |
2032 | if (xdb_commands) | |
2033 | { | |
c5aa993b JM |
2034 | add_com_alias ("/", "forward-search", class_files, 0); |
2035 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
2036 | } |
2037 | ||
bd4109fb | 2038 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d AC |
2039 | Set number of source lines gdb will list by default."), _("\ |
2040 | Show number of source lines gdb will list by default."), NULL, | |
2041 | NULL, | |
920d2a44 | 2042 | show_lines_to_list, |
35096d9d | 2043 | &setlist, &showlist); |
2f61ca93 JB |
2044 | |
2045 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2046 | _("\ | |
7ef2b397 JB |
2047 | Usage: set substitute-path FROM TO\n\ |
2048 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2049 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2050 | is replaced by the new one."), | |
2051 | &setlist); | |
2f61ca93 JB |
2052 | |
2053 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2054 | _("\ | |
7ef2b397 JB |
2055 | Usage: unset substitute-path [FROM]\n\ |
2056 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2057 | is not specified, all substituting rules are deleted.\n\ | |
2058 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2059 | &unsetlist); |
2060 | ||
2061 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2062 | _("\ |
2063 | Usage: show substitute-path [FROM]\n\ | |
2064 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2065 | is not specified, print all substitution rules."), | |
2f61ca93 | 2066 | &showlist); |
c906108c | 2067 | } |