Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
e2882c85 | 2 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
5af949e3 | 20 | #include "arch-utils.h" |
c906108c SS |
21 | #include "symtab.h" |
22 | #include "expression.h" | |
23 | #include "language.h" | |
24 | #include "command.h" | |
c2c6d25f | 25 | #include "source.h" |
c906108c SS |
26 | #include "gdbcmd.h" |
27 | #include "frame.h" | |
28 | #include "value.h" | |
614c279d | 29 | #include "filestuff.h" |
c906108c SS |
30 | |
31 | #include <sys/types.h> | |
c906108c | 32 | #include <fcntl.h> |
c906108c | 33 | #include "gdbcore.h" |
88987551 | 34 | #include "gdb_regex.h" |
c906108c SS |
35 | #include "symfile.h" |
36 | #include "objfiles.h" | |
37 | #include "annotate.h" | |
38 | #include "gdbtypes.h" | |
c5f0f3d0 | 39 | #include "linespec.h" |
fe4e3eb8 | 40 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 41 | #include "completer.h" |
8b93c638 | 42 | #include "ui-out.h" |
dbda9972 | 43 | #include "readline/readline.h" |
8d297bbf | 44 | #include "common/enum-flags.h" |
5dc1a704 | 45 | #include "common/scoped_fd.h" |
325fac50 | 46 | #include <algorithm> |
b4987c95 | 47 | #include "common/pathstuff.h" |
c906108c | 48 | |
c906108c SS |
49 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
50 | #define FDOPEN_MODE FOPEN_RB | |
51 | ||
c378eb4e | 52 | /* Prototypes for local functions. */ |
c906108c | 53 | |
a14ed312 | 54 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 55 | |
c906108c SS |
56 | /* Path of directories to search for source files. |
57 | Same format as the PATH environment variable's value. */ | |
58 | ||
59 | char *source_path; | |
60 | ||
2f61ca93 JB |
61 | /* Support for source path substitution commands. */ |
62 | ||
63 | struct substitute_path_rule | |
64 | { | |
65 | char *from; | |
66 | char *to; | |
67 | struct substitute_path_rule *next; | |
68 | }; | |
69 | ||
70 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
71 | ||
c906108c SS |
72 | /* Symtab of default file for listing lines of. */ |
73 | ||
0378c332 | 74 | static struct symtab *current_source_symtab; |
c906108c SS |
75 | |
76 | /* Default next line to list. */ | |
77 | ||
0378c332 | 78 | static int current_source_line; |
c906108c | 79 | |
6c95b8df PA |
80 | static struct program_space *current_source_pspace; |
81 | ||
c906108c SS |
82 | /* Default number of lines to print with commands like "list". |
83 | This is based on guessing how many long (i.e. more than chars_per_line | |
84 | characters) lines there will be. To be completely correct, "list" | |
85 | and friends should be rewritten to count characters and see where | |
86 | things are wrapping, but that would be a fair amount of work. */ | |
87 | ||
f43f8571 | 88 | static int lines_to_list = 10; |
920d2a44 AC |
89 | static void |
90 | show_lines_to_list (struct ui_file *file, int from_tty, | |
91 | struct cmd_list_element *c, const char *value) | |
92 | { | |
3e43a32a MS |
93 | fprintf_filtered (file, |
94 | _("Number of source lines gdb " | |
95 | "will list by default is %s.\n"), | |
920d2a44 AC |
96 | value); |
97 | } | |
c906108c | 98 | |
1b56eb55 JK |
99 | /* Possible values of 'set filename-display'. */ |
100 | static const char filename_display_basename[] = "basename"; | |
101 | static const char filename_display_relative[] = "relative"; | |
102 | static const char filename_display_absolute[] = "absolute"; | |
103 | ||
104 | static const char *const filename_display_kind_names[] = { | |
105 | filename_display_basename, | |
106 | filename_display_relative, | |
107 | filename_display_absolute, | |
108 | NULL | |
109 | }; | |
110 | ||
111 | static const char *filename_display_string = filename_display_relative; | |
112 | ||
113 | static void | |
114 | show_filename_display_string (struct ui_file *file, int from_tty, | |
115 | struct cmd_list_element *c, const char *value) | |
116 | { | |
117 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
118 | } | |
119 | ||
c906108c SS |
120 | /* Line number of last line printed. Default for various commands. |
121 | current_source_line is usually, but not always, the same as this. */ | |
122 | ||
123 | static int last_line_listed; | |
124 | ||
5166082f PA |
125 | /* First line number listed by last listing command. If 0, then no |
126 | source lines have yet been listed since the last time the current | |
127 | source line was changed. */ | |
c906108c SS |
128 | |
129 | static int first_line_listed; | |
130 | ||
131 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 132 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
133 | |
134 | static struct symtab *last_source_visited = NULL; | |
135 | static int last_source_error = 0; | |
c906108c | 136 | \f |
0378c332 FN |
137 | /* Return the first line listed by print_source_lines. |
138 | Used by command interpreters to request listing from | |
c378eb4e | 139 | a previous point. */ |
0378c332 FN |
140 | |
141 | int | |
142 | get_first_line_listed (void) | |
143 | { | |
144 | return first_line_listed; | |
145 | } | |
146 | ||
5166082f PA |
147 | /* Clear line listed range. This makes the next "list" center the |
148 | printed source lines around the current source line. */ | |
149 | ||
150 | static void | |
151 | clear_lines_listed_range (void) | |
152 | { | |
153 | first_line_listed = 0; | |
154 | last_line_listed = 0; | |
155 | } | |
156 | ||
0378c332 FN |
157 | /* Return the default number of lines to print with commands like the |
158 | cli "list". The caller of print_source_lines must use this to | |
159 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 160 | as it does not automatically use this value. */ |
0378c332 FN |
161 | |
162 | int | |
163 | get_lines_to_list (void) | |
164 | { | |
165 | return lines_to_list; | |
166 | } | |
167 | ||
168 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 169 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
170 | |
171 | struct symtab_and_line | |
172 | get_current_source_symtab_and_line (void) | |
173 | { | |
51abb421 | 174 | symtab_and_line cursal; |
0378c332 | 175 | |
6c95b8df | 176 | cursal.pspace = current_source_pspace; |
0378c332 FN |
177 | cursal.symtab = current_source_symtab; |
178 | cursal.line = current_source_line; | |
53cb0458 FN |
179 | cursal.pc = 0; |
180 | cursal.end = 0; | |
0378c332 FN |
181 | |
182 | return cursal; | |
183 | } | |
184 | ||
53cb0458 FN |
185 | /* If the current source file for listing is not set, try and get a default. |
186 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 187 | It may err out if a default cannot be determined. |
53cb0458 FN |
188 | We must be cautious about where it is called, as it can recurse as the |
189 | process of determining a new default may call the caller! | |
190 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 191 | we have without erroring out or trying to get a default. */ |
0378c332 | 192 | |
53cb0458 FN |
193 | void |
194 | set_default_source_symtab_and_line (void) | |
0378c332 | 195 | { |
0378c332 | 196 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 197 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 198 | |
c378eb4e | 199 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
200 | if (current_source_symtab == 0) |
201 | select_source_symtab (0); | |
0378c332 FN |
202 | } |
203 | ||
204 | /* Return the current default file for listing and next line to list | |
205 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 206 | and set the current default to whatever is in SAL. |
c378eb4e | 207 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
208 | |
209 | struct symtab_and_line | |
51abb421 | 210 | set_current_source_symtab_and_line (const symtab_and_line &sal) |
0378c332 | 211 | { |
51abb421 | 212 | symtab_and_line cursal; |
6c95b8df PA |
213 | |
214 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
215 | cursal.symtab = current_source_symtab; |
216 | cursal.line = current_source_line; | |
6c95b8df PA |
217 | cursal.pc = 0; |
218 | cursal.end = 0; | |
0378c332 | 219 | |
51abb421 PA |
220 | current_source_pspace = sal.pspace; |
221 | current_source_symtab = sal.symtab; | |
222 | current_source_line = sal.line; | |
6c95b8df | 223 | |
5166082f PA |
224 | /* Force the next "list" to center around the current line. */ |
225 | clear_lines_listed_range (); | |
226 | ||
0378c332 FN |
227 | return cursal; |
228 | } | |
229 | ||
c378eb4e | 230 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
231 | |
232 | void | |
233 | clear_current_source_symtab_and_line (void) | |
234 | { | |
235 | current_source_symtab = 0; | |
236 | current_source_line = 0; | |
237 | } | |
c5aa993b | 238 | |
c906108c SS |
239 | /* Set the source file default for the "list" command to be S. |
240 | ||
241 | If S is NULL, and we don't have a default, find one. This | |
242 | should only be called when the user actually tries to use the | |
243 | default, since we produce an error if we can't find a reasonable | |
244 | default. Also, since this can cause symbols to be read, doing it | |
245 | before we need to would make things slower than necessary. */ | |
246 | ||
247 | void | |
aa1ee363 | 248 | select_source_symtab (struct symtab *s) |
c906108c | 249 | { |
c906108c | 250 | struct objfile *ofp; |
43f3e411 | 251 | struct compunit_symtab *cu; |
c5aa993b | 252 | |
c906108c SS |
253 | if (s) |
254 | { | |
255 | current_source_symtab = s; | |
256 | current_source_line = 1; | |
6c95b8df | 257 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
258 | return; |
259 | } | |
260 | ||
261 | if (current_source_symtab) | |
262 | return; | |
263 | ||
264 | /* Make the default place to list be the function `main' | |
265 | if one exists. */ | |
d12307c1 | 266 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0).symbol) |
c906108c | 267 | { |
6c5b2ebe PA |
268 | std::vector<symtab_and_line> sals |
269 | = decode_line_with_current_source (main_name (), | |
270 | DECODE_LINE_FUNFIRSTLINE); | |
271 | const symtab_and_line &sal = sals[0]; | |
6c95b8df | 272 | current_source_pspace = sal.pspace; |
c906108c | 273 | current_source_symtab = sal.symtab; |
325fac50 | 274 | current_source_line = std::max (sal.line - (lines_to_list - 1), 1); |
c906108c | 275 | if (current_source_symtab) |
c5aa993b | 276 | return; |
c906108c | 277 | } |
c5aa993b | 278 | |
8340a3fb LM |
279 | /* Alright; find the last file in the symtab list (ignoring .h's |
280 | and namespace symtabs). */ | |
c906108c SS |
281 | |
282 | current_source_line = 1; | |
283 | ||
43f3e411 | 284 | ALL_FILETABS (ofp, cu, s) |
c906108c | 285 | { |
712a2e6d DE |
286 | const char *name = s->filename; |
287 | int len = strlen (name); | |
288 | ||
289 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
290 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
c906108c | 291 | { |
712a2e6d DE |
292 | current_source_pspace = current_program_space; |
293 | current_source_symtab = s; | |
c906108c SS |
294 | } |
295 | } | |
6c95b8df | 296 | |
c906108c SS |
297 | if (current_source_symtab) |
298 | return; | |
299 | ||
6c95b8df | 300 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
301 | { |
302 | if (ofp->sf) | |
303 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
304 | if (s) | |
305 | current_source_symtab = s; | |
306 | } | |
c906108c SS |
307 | if (current_source_symtab) |
308 | return; | |
309 | ||
8a3fe4f8 | 310 | error (_("Can't find a default source file")); |
c906108c SS |
311 | } |
312 | \f | |
99e7ae30 DE |
313 | /* Handler for "set directories path-list" command. |
314 | "set dir mumble" doesn't prepend paths, it resets the entire | |
315 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
316 | ||
317 | static void | |
eb4c3f4a TT |
318 | set_directories_command (const char *args, |
319 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
320 | { |
321 | /* This is the value that was set. | |
322 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
323 | char *set_path = source_path; | |
324 | ||
325 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
326 | the list by calling init_source_path. If they appear earlier in | |
327 | SET_PATH then mod_path will move them appropriately. | |
328 | mod_path will also remove duplicates. */ | |
329 | init_source_path (); | |
330 | if (*set_path != '\0') | |
331 | mod_path (set_path, &source_path); | |
332 | ||
333 | xfree (set_path); | |
334 | } | |
335 | ||
336 | /* Print the list of source directories. | |
337 | This is used by the "ld" command, so it has the signature of a command | |
338 | function. */ | |
339 | ||
c906108c | 340 | static void |
99e7ae30 | 341 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
342 | { |
343 | puts_filtered ("Source directories searched: "); | |
344 | puts_filtered (source_path); | |
345 | puts_filtered ("\n"); | |
346 | } | |
347 | ||
99e7ae30 DE |
348 | /* Handler for "show directories" command. */ |
349 | ||
350 | static void | |
351 | show_directories_command (struct ui_file *file, int from_tty, | |
352 | struct cmd_list_element *c, const char *value) | |
353 | { | |
354 | show_directories_1 (NULL, from_tty); | |
355 | } | |
356 | ||
00174a86 TT |
357 | /* Forget line positions and file names for the symtabs in a |
358 | particular objfile. */ | |
359 | ||
360 | void | |
361 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
362 | { | |
43f3e411 | 363 | struct compunit_symtab *cu; |
00174a86 TT |
364 | struct symtab *s; |
365 | ||
43f3e411 | 366 | ALL_OBJFILE_FILETABS (objfile, cu, s) |
00174a86 TT |
367 | { |
368 | if (s->line_charpos != NULL) | |
369 | { | |
370 | xfree (s->line_charpos); | |
371 | s->line_charpos = NULL; | |
372 | } | |
373 | if (s->fullname != NULL) | |
374 | { | |
375 | xfree (s->fullname); | |
376 | s->fullname = NULL; | |
377 | } | |
00174a86 | 378 | } |
6f809020 DE |
379 | |
380 | if (objfile->sf) | |
381 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
382 | } |
383 | ||
c906108c SS |
384 | /* Forget what we learned about line positions in source files, and |
385 | which directories contain them; must check again now since files | |
386 | may be found in a different directory now. */ | |
387 | ||
388 | void | |
fba45db2 | 389 | forget_cached_source_info (void) |
c906108c | 390 | { |
6c95b8df | 391 | struct program_space *pspace; |
52f0bd74 | 392 | struct objfile *objfile; |
c906108c | 393 | |
6c95b8df PA |
394 | ALL_PSPACES (pspace) |
395 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 396 | { |
00174a86 | 397 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 398 | } |
c4e86dd4 DJ |
399 | |
400 | last_source_visited = NULL; | |
c906108c SS |
401 | } |
402 | ||
403 | void | |
fba45db2 | 404 | init_source_path (void) |
c906108c SS |
405 | { |
406 | char buf[20]; | |
407 | ||
08850b56 | 408 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 409 | source_path = xstrdup (buf); |
c906108c SS |
410 | forget_cached_source_info (); |
411 | } | |
412 | ||
413 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 414 | |
28da1647 | 415 | static void |
5fed81ff | 416 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
417 | { |
418 | dont_repeat (); | |
c378eb4e | 419 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
420 | if (dirname == 0) |
421 | { | |
80618b99 | 422 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 423 | { |
b8c9b27d | 424 | xfree (source_path); |
c906108c SS |
425 | init_source_path (); |
426 | } | |
427 | } | |
428 | else | |
429 | { | |
430 | mod_path (dirname, &source_path); | |
c4e86dd4 | 431 | forget_cached_source_info (); |
c906108c SS |
432 | } |
433 | if (from_tty) | |
99e7ae30 | 434 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
435 | } |
436 | ||
13d35ae5 AS |
437 | /* Add a path given with the -d command line switch. |
438 | This will not be quoted so we must not treat spaces as separators. */ | |
439 | ||
440 | void | |
5614fb77 | 441 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
442 | { |
443 | add_path (dirname, &source_path, 0); | |
444 | } | |
445 | ||
c906108c SS |
446 | /* Add zero or more directories to the front of an arbitrary path. */ |
447 | ||
448 | void | |
5614fb77 | 449 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
450 | { |
451 | add_path (dirname, which_path, 1); | |
452 | } | |
453 | ||
454 | /* Workhorse of mod_path. Takes an extra argument to determine | |
455 | if dirname should be parsed for separators that indicate multiple | |
456 | directories. This allows for interfaces that pre-parse the dirname | |
457 | and allow specification of traditional separator characters such | |
c378eb4e | 458 | as space or tab. */ |
c04e0a08 JJ |
459 | |
460 | void | |
5614fb77 | 461 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
462 | { |
463 | char *old = *which_path; | |
464 | int prefix = 0; | |
e80aaf61 | 465 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
466 | |
467 | if (dirname == 0) | |
468 | return; | |
469 | ||
13d35ae5 AS |
470 | if (parse_separators) |
471 | { | |
472 | /* This will properly parse the space and tab separators | |
e4ab2fad | 473 | and any quotes that may exist. */ |
773a1edc | 474 | gdb_argv argv (dirname); |
e4ab2fad | 475 | |
773a1edc TT |
476 | for (char *arg : argv) |
477 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
478 | } |
479 | else | |
e80aaf61 | 480 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 481 | |
e80aaf61 SM |
482 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
483 | ||
484 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) | |
c906108c | 485 | { |
e80aaf61 | 486 | char *name = name_up.get (); |
aa1ee363 | 487 | char *p; |
c906108c SS |
488 | struct stat st; |
489 | ||
e4ab2fad JK |
490 | /* Spaces and tabs will have been removed by buildargv(). |
491 | NAME is the start of the directory. | |
492 | P is the '\0' following the end. */ | |
493 | p = name + strlen (name); | |
13d35ae5 AS |
494 | |
495 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 496 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 497 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 498 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 499 | #endif |
13d35ae5 | 500 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 501 | /* Sigh. "foo/" => "foo" */ |
c906108c | 502 | --p; |
c906108c SS |
503 | *p = '\0'; |
504 | ||
7be570e7 | 505 | while (p > name && p[-1] == '.') |
c906108c SS |
506 | { |
507 | if (p - name == 1) | |
508 | { | |
509 | /* "." => getwd (). */ | |
510 | name = current_directory; | |
511 | goto append; | |
512 | } | |
fe4e3eb8 | 513 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
514 | { |
515 | if (p - name == 2) | |
516 | { | |
517 | /* "/." => "/". */ | |
518 | *--p = '\0'; | |
519 | goto append; | |
520 | } | |
521 | else | |
522 | { | |
523 | /* "...foo/." => "...foo". */ | |
524 | p -= 2; | |
525 | *p = '\0'; | |
526 | continue; | |
527 | } | |
528 | } | |
529 | else | |
530 | break; | |
531 | } | |
532 | ||
533 | if (name[0] == '~') | |
534 | name = tilde_expand (name); | |
c3690141 | 535 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 536 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 537 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 538 | #endif |
fe4e3eb8 | 539 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 540 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
541 | else |
542 | name = savestring (name, p - name); | |
b8c9b27d | 543 | make_cleanup (xfree, name); |
c906108c SS |
544 | |
545 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
546 | if (name[0] != '$') |
547 | { | |
548 | /* These are warnings, not errors, since we don't want a | |
549 | non-existent directory in a .gdbinit file to stop processing | |
550 | of the .gdbinit file. | |
551 | ||
552 | Whether they get added to the path is more debatable. Current | |
553 | answer is yes, in case the user wants to go make the directory | |
554 | or whatever. If the directory continues to not exist/not be | |
555 | a directory/etc, then having them in the path should be | |
556 | harmless. */ | |
557 | if (stat (name, &st) < 0) | |
558 | { | |
559 | int save_errno = errno; | |
433759f7 | 560 | |
c5aa993b JM |
561 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
562 | print_sys_errmsg (name, save_errno); | |
563 | } | |
564 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 565 | warning (_("%s is not a directory."), name); |
c5aa993b | 566 | } |
c906108c SS |
567 | |
568 | append: | |
569 | { | |
aa1ee363 | 570 | unsigned int len = strlen (name); |
5ee4ed9f | 571 | char tinybuf[2]; |
c906108c SS |
572 | |
573 | p = *which_path; | |
5e3f4fab | 574 | while (1) |
c906108c | 575 | { |
5e3f4fab EBM |
576 | /* FIXME: we should use realpath() or its work-alike |
577 | before comparing. Then all the code above which | |
578 | removes excess slashes and dots could simply go away. */ | |
579 | if (!filename_ncmp (p, name, len) | |
580 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
581 | { | |
582 | /* Found it in the search path, remove old copy. */ | |
583 | if (p > *which_path) | |
584 | { | |
585 | /* Back over leading separator. */ | |
586 | p--; | |
587 | } | |
588 | if (prefix > p - *which_path) | |
589 | { | |
590 | /* Same dir twice in one cmd. */ | |
591 | goto skip_dup; | |
592 | } | |
593 | /* Copy from next '\0' or ':'. */ | |
594 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
595 | } | |
596 | p = strchr (p, DIRNAME_SEPARATOR); | |
597 | if (p != 0) | |
598 | ++p; | |
599 | else | |
600 | break; | |
c906108c | 601 | } |
c906108c | 602 | |
5ee4ed9f JK |
603 | tinybuf[0] = DIRNAME_SEPARATOR; |
604 | tinybuf[1] = '\0'; | |
c906108c | 605 | |
5ee4ed9f JK |
606 | /* If we have already tacked on a name(s) in this command, |
607 | be sure they stay on the front as we tack on some | |
608 | more. */ | |
609 | if (prefix) | |
610 | { | |
611 | char *temp, c; | |
612 | ||
613 | c = old[prefix]; | |
614 | old[prefix] = '\0'; | |
615 | temp = concat (old, tinybuf, name, (char *)NULL); | |
616 | old[prefix] = c; | |
617 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
618 | prefix = strlen (temp); | |
619 | xfree (temp); | |
620 | } | |
621 | else | |
622 | { | |
623 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
624 | old, (char *)NULL); | |
625 | prefix = strlen (name); | |
c906108c | 626 | } |
5ee4ed9f JK |
627 | xfree (old); |
628 | old = *which_path; | |
c906108c | 629 | } |
82ae4854 | 630 | skip_dup: |
b27cf2b3 | 631 | ; |
c5aa993b | 632 | } |
e4ab2fad JK |
633 | |
634 | do_cleanups (back_to); | |
c906108c SS |
635 | } |
636 | ||
637 | ||
638 | static void | |
1d12d88f | 639 | info_source_command (const char *ignore, int from_tty) |
c906108c | 640 | { |
52f0bd74 | 641 | struct symtab *s = current_source_symtab; |
b6577aab | 642 | struct compunit_symtab *cust; |
c906108c SS |
643 | |
644 | if (!s) | |
645 | { | |
a3f17187 | 646 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
647 | return; |
648 | } | |
b6577aab DE |
649 | |
650 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 651 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
652 | if (SYMTAB_DIRNAME (s) != NULL) |
653 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 654 | if (s->fullname) |
a3f17187 | 655 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 656 | if (s->nlines) |
a3f17187 | 657 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
658 | s->nlines == 1 ? "" : "s"); |
659 | ||
a3f17187 | 660 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
661 | printf_filtered (_("Producer is %s.\n"), |
662 | COMPUNIT_PRODUCER (cust) != NULL | |
663 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 664 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 665 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 666 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 667 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 668 | ? "Includes" : "Does not include"); |
c906108c | 669 | } |
c5aa993b | 670 | \f |
c906108c | 671 | |
c906108c | 672 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
673 | using mode MODE in the calls to open. You cannot use this function to |
674 | create files (O_CREAT). | |
c906108c | 675 | |
014d698b EZ |
676 | OPTS specifies the function behaviour in specific cases. |
677 | ||
678 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 679 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
680 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
681 | disables searching of the path (this is so that "exec-file ./foo" or | |
682 | "symbol-file ./foo" insures that you get that particular version of | |
683 | foo or an error message). | |
c906108c | 684 | |
014d698b EZ |
685 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
686 | searched in path (we usually want this for source files but not for | |
687 | executables). | |
688 | ||
e7a8479f | 689 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 690 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
691 | have to take special pains to avoid doubling the "/" between the directory |
692 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
693 | source file name!!! | |
694 | ||
492c0ab7 JK |
695 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
696 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
697 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
698 | effect. | |
1f0c4988 | 699 | |
c906108c SS |
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, | |
c378eb4e | 704 | >>>> eg executable, non-directory. */ |
c906108c | 705 | int |
24b9144d | 706 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 707 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 708 | { |
52f0bd74 AC |
709 | int fd; |
710 | char *filename; | |
c906108c | 711 | int alloclen; |
79b289e2 PA |
712 | /* The errno set for the last name we tried to open (and |
713 | failed). */ | |
714 | int last_errno = 0; | |
e80aaf61 | 715 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 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 | 740 | { |
a55411b9 | 741 | int i, reg_file_errno; |
072b1022 | 742 | |
a55411b9 | 743 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 744 | { |
224c3ddb | 745 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 746 | strcpy (filename, string); |
614c279d | 747 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
748 | if (fd >= 0) |
749 | goto done; | |
a55411b9 | 750 | last_errno = errno; |
072b1022 DJ |
751 | } |
752 | else | |
3f565f1e DJ |
753 | { |
754 | filename = NULL; | |
755 | fd = -1; | |
a55411b9 | 756 | last_errno = reg_file_errno; |
3f565f1e | 757 | } |
072b1022 | 758 | |
014d698b EZ |
759 | if (!(opts & OPF_SEARCH_IN_PATH)) |
760 | for (i = 0; string[i]; i++) | |
761 | if (IS_DIR_SEPARATOR (string[i])) | |
762 | goto done; | |
c906108c SS |
763 | } |
764 | ||
e6d9b9c2 DE |
765 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
766 | if (HAS_DRIVE_SPEC (string)) | |
767 | string = STRIP_DRIVE_SPEC (string); | |
768 | ||
c378eb4e | 769 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
770 | while (IS_DIR_SEPARATOR(string[0])) |
771 | string++; | |
772 | ||
c906108c | 773 | /* ./foo => foo */ |
fe4e3eb8 | 774 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
775 | string += 2; |
776 | ||
777 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 778 | filename = (char *) alloca (alloclen); |
c906108c | 779 | fd = -1; |
79b289e2 | 780 | last_errno = ENOENT; |
e4ab2fad JK |
781 | |
782 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 783 | |
e80aaf61 | 784 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 785 | { |
e80aaf61 | 786 | char *dir = dir_up.get (); |
e4ab2fad | 787 | size_t len = strlen (dir); |
a55411b9 | 788 | int reg_file_errno; |
c906108c | 789 | |
e4ab2fad | 790 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
791 | { |
792 | /* Name is $cwd -- insert current directory name instead. */ | |
793 | int newlen; | |
794 | ||
c378eb4e | 795 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
796 | len = strlen (current_directory); |
797 | newlen = len + strlen (string) + 2; | |
798 | if (newlen > alloclen) | |
799 | { | |
800 | alloclen = newlen; | |
224c3ddb | 801 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
802 | } |
803 | strcpy (filename, current_directory); | |
804 | } | |
ebd86fb5 TJB |
805 | else if (strchr(dir, '~')) |
806 | { | |
807 | /* See whether we need to expand the tilde. */ | |
808 | int newlen; | |
ebd86fb5 | 809 | |
ee0c3293 | 810 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
811 | |
812 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 813 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
814 | newlen = len + strlen (string) + 2; |
815 | if (newlen > alloclen) | |
816 | { | |
817 | alloclen = newlen; | |
224c3ddb | 818 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 819 | } |
ee0c3293 | 820 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 821 | } |
c5aa993b JM |
822 | else |
823 | { | |
824 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 825 | strcpy (filename, dir); |
08001717 DE |
826 | |
827 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
828 | don't have enough information to expand it. The user *could* | |
829 | have an actual directory named '$cdir' but handling that would | |
830 | be confusing, it would mean different things in different | |
831 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
832 | We can get $cdir when loading scripts. When loading source files | |
833 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 834 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 835 | continue; |
c906108c | 836 | } |
c906108c | 837 | |
c378eb4e | 838 | /* Remove trailing slashes. */ |
fe4e3eb8 | 839 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
840 | filename[--len] = 0; |
841 | ||
c5aa993b | 842 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
843 | strcat (filename, string); |
844 | ||
a55411b9 | 845 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 846 | { |
614c279d | 847 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
848 | if (fd >= 0) |
849 | break; | |
79b289e2 | 850 | last_errno = errno; |
5e987968 | 851 | } |
a55411b9 DE |
852 | else |
853 | last_errno = reg_file_errno; | |
c906108c SS |
854 | } |
855 | ||
c5aa993b | 856 | done: |
c906108c SS |
857 | if (filename_opened) |
858 | { | |
f5b95b50 | 859 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 860 | if (fd < 0) |
e0cc99a6 | 861 | filename_opened->reset (NULL); |
04affae3 | 862 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 863 | *filename_opened = gdb_realpath (filename); |
c906108c | 864 | else |
e0cc99a6 | 865 | *filename_opened = gdb_abspath (filename); |
c906108c | 866 | } |
c906108c | 867 | |
79b289e2 | 868 | errno = last_errno; |
c906108c SS |
869 | return fd; |
870 | } | |
871 | ||
c5aa993b | 872 | |
c906108c SS |
873 | /* This is essentially a convenience, for clients that want the behaviour |
874 | of openp, using source_path, but that really don't want the file to be | |
875 | opened but want instead just to know what the full pathname is (as | |
876 | qualified against source_path). | |
877 | ||
878 | The current working directory is searched first. | |
879 | ||
880 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
881 | set to the fully-qualified pathname. | |
882 | ||
5e987968 | 883 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 884 | int |
e0cc99a6 TT |
885 | source_full_path_of (const char *filename, |
886 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 887 | { |
c5aa993b | 888 | int fd; |
c906108c | 889 | |
492c0ab7 JK |
890 | fd = openp (source_path, |
891 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
892 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
893 | if (fd < 0) |
894 | { | |
e0cc99a6 | 895 | full_pathname->reset (NULL); |
c906108c SS |
896 | return 0; |
897 | } | |
898 | ||
899 | close (fd); | |
900 | return 1; | |
901 | } | |
902 | ||
2f61ca93 JB |
903 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
904 | applied to PATH. */ | |
905 | ||
906 | static int | |
907 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
908 | const char *path) | |
909 | { | |
910 | const int from_len = strlen (rule->from); | |
911 | const int path_len = strlen (path); | |
2f61ca93 JB |
912 | |
913 | if (path_len < from_len) | |
914 | return 0; | |
915 | ||
916 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 917 | so the path should start with rule->from. */ |
2f61ca93 | 918 | |
486ef3b9 | 919 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
920 | return 0; |
921 | ||
922 | /* Make sure that the region in the path that matches the substitution | |
923 | rule is immediately followed by a directory separator (or the end of | |
924 | string character). */ | |
230cd560 | 925 | |
2f61ca93 JB |
926 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
927 | return 0; | |
928 | ||
929 | return 1; | |
930 | } | |
931 | ||
932 | /* Find the substitute-path rule that applies to PATH and return it. | |
933 | Return NULL if no rule applies. */ | |
934 | ||
935 | static struct substitute_path_rule * | |
936 | get_substitute_path_rule (const char *path) | |
937 | { | |
938 | struct substitute_path_rule *rule = substitute_path_rules; | |
939 | ||
940 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
941 | rule = rule->next; | |
942 | ||
943 | return rule; | |
944 | } | |
945 | ||
946 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
947 | to PATH, then apply it and return the new path. |
948 | ||
2f61ca93 JB |
949 | Return NULL if no substitution rule was specified by the user, |
950 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
951 | |
952 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
953 | rewrite_source_path (const char *path) |
954 | { | |
955 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
956 | char *new_path; | |
957 | int from_len; | |
958 | ||
959 | if (rule == NULL) | |
960 | return NULL; | |
961 | ||
962 | from_len = strlen (rule->from); | |
963 | ||
964 | /* Compute the rewritten path and return it. */ | |
965 | ||
966 | new_path = | |
967 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
968 | strcpy (new_path, rule->to); | |
969 | strcat (new_path, path + from_len); | |
970 | ||
0b581c69 | 971 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
972 | } |
973 | ||
ccefe4c4 | 974 | int |
e2357892 | 975 | find_and_open_source (const char *filename, |
5e987968 | 976 | const char *dirname, |
e0cc99a6 | 977 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
978 | { |
979 | char *path = source_path; | |
31889e00 | 980 | const char *p; |
c906108c | 981 | int result; |
c906108c | 982 | |
c378eb4e | 983 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 984 | |
57c22c6c | 985 | if (*fullname) |
c906108c | 986 | { |
2f61ca93 JB |
987 | /* The user may have requested that source paths be rewritten |
988 | according to substitution rules he provided. If a substitution | |
989 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
990 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
991 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
992 | |
993 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 994 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 995 | |
e0cc99a6 | 996 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 997 | if (result >= 0) |
bc3aa6c3 | 998 | { |
e0cc99a6 | 999 | *fullname = gdb_realpath (fullname->get ()); |
bc3aa6c3 DE |
1000 | return result; |
1001 | } | |
1002 | ||
c378eb4e | 1003 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1004 | fullname->reset (NULL); |
c906108c SS |
1005 | } |
1006 | ||
0b581c69 | 1007 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1008 | if (dirname != NULL) |
c906108c | 1009 | { |
2f61ca93 JB |
1010 | /* If necessary, rewrite the compilation directory name according |
1011 | to the source path substitution rules specified by the user. */ | |
1012 | ||
0b581c69 | 1013 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1014 | |
1015 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1016 | dirname = rewritten_dirname.get (); |
1017 | ||
c378eb4e MS |
1018 | /* Replace a path entry of $cdir with the compilation directory |
1019 | name. */ | |
c906108c SS |
1020 | #define cdir_len 5 |
1021 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1022 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1023 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1024 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1025 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1026 | { |
1027 | int len; | |
1028 | ||
1029 | path = (char *) | |
57c22c6c | 1030 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1031 | len = p - source_path; |
c5aa993b | 1032 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1033 | strcpy (path + len, dirname); /* new stuff */ |
1034 | strcat (path + len, source_path + len + cdir_len); /* After | |
1035 | $cdir */ | |
c906108c SS |
1036 | } |
1037 | } | |
8da2a1df | 1038 | |
0b581c69 | 1039 | gdb::unique_xmalloc_ptr<char> rewritten_filename; |
8da2a1df | 1040 | if (IS_ABSOLUTE_PATH (filename)) |
56163ce1 | 1041 | { |
8da2a1df DJ |
1042 | /* If filename is absolute path, try the source path |
1043 | substitution on it. */ | |
0b581c69 | 1044 | rewritten_filename = rewrite_source_path (filename); |
56163ce1 JB |
1045 | |
1046 | if (rewritten_filename != NULL) | |
0b581c69 | 1047 | filename = rewritten_filename.get (); |
56163ce1 | 1048 | } |
c906108c | 1049 | |
492c0ab7 JK |
1050 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1051 | OPEN_MODE, fullname); | |
c906108c SS |
1052 | if (result < 0) |
1053 | { | |
c378eb4e | 1054 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1055 | p = lbasename (filename); |
1056 | if (p != filename) | |
492c0ab7 JK |
1057 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1058 | OPEN_MODE, fullname); | |
c906108c | 1059 | } |
c906108c | 1060 | |
c906108c SS |
1061 | return result; |
1062 | } | |
1063 | ||
57c22c6c BR |
1064 | /* Open a source file given a symtab S. Returns a file descriptor or |
1065 | negative number for error. | |
1066 | ||
c378eb4e | 1067 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1068 | |
1069 | int | |
1070 | open_source_file (struct symtab *s) | |
1071 | { | |
5e987968 AS |
1072 | if (!s) |
1073 | return -1; | |
57c22c6c | 1074 | |
e0cc99a6 TT |
1075 | gdb::unique_xmalloc_ptr<char> fullname; |
1076 | int fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), &fullname); | |
1077 | s->fullname = fullname.release (); | |
1078 | return fd; | |
57c22c6c BR |
1079 | } |
1080 | ||
1081 | /* Finds the fullname that a symtab represents. | |
c906108c | 1082 | |
f35a17b5 JK |
1083 | This functions finds the fullname and saves it in s->fullname. |
1084 | It will also return the value. | |
57c22c6c BR |
1085 | |
1086 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1087 | the expected fullname is used. Therefore the files does not have to |
1088 | exist. */ | |
256f06f3 | 1089 | |
0b0865da | 1090 | const char * |
57c22c6c | 1091 | symtab_to_fullname (struct symtab *s) |
c906108c | 1092 | { |
256f06f3 DE |
1093 | /* Use cached copy if we have it. |
1094 | We rely on forget_cached_source_info being called appropriately | |
1095 | to handle cases like the file being moved. */ | |
f35a17b5 | 1096 | if (s->fullname == NULL) |
5e987968 | 1097 | { |
e0cc99a6 | 1098 | int fd = open_source_file (s); |
f35a17b5 JK |
1099 | |
1100 | if (fd >= 0) | |
1101 | close (fd); | |
f35a17b5 | 1102 | else |
f0a4b570 | 1103 | { |
0b581c69 | 1104 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1105 | |
1106 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1107 | should report the pathname where GDB tried to find the file. */ | |
1108 | ||
ee6f8984 | 1109 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1110 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1111 | else |
0b581c69 TT |
1112 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1113 | s->filename, (char *) NULL)); | |
f0a4b570 | 1114 | |
0b581c69 | 1115 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1116 | if (s->fullname == NULL) |
0b581c69 | 1117 | s->fullname = fullname.release (); |
f0a4b570 | 1118 | } |
f35a17b5 | 1119 | } |
c906108c | 1120 | |
f35a17b5 | 1121 | return s->fullname; |
57c22c6c | 1122 | } |
1b56eb55 JK |
1123 | |
1124 | /* See commentary in source.h. */ | |
1125 | ||
1126 | const char * | |
1127 | symtab_to_filename_for_display (struct symtab *symtab) | |
1128 | { | |
1129 | if (filename_display_string == filename_display_basename) | |
1130 | return lbasename (symtab->filename); | |
1131 | else if (filename_display_string == filename_display_absolute) | |
1132 | return symtab_to_fullname (symtab); | |
1133 | else if (filename_display_string == filename_display_relative) | |
1134 | return symtab->filename; | |
1135 | else | |
1136 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1137 | } | |
5e987968 | 1138 | \f |
c906108c SS |
1139 | /* Create and initialize the table S->line_charpos that records |
1140 | the positions of the lines in the source file, which is assumed | |
1141 | to be open on descriptor DESC. | |
1142 | All set S->nlines to the number of such lines. */ | |
1143 | ||
1144 | void | |
fba45db2 | 1145 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1146 | { |
1147 | struct stat st; | |
a9abc434 | 1148 | char *p, *end; |
c906108c SS |
1149 | int nlines = 0; |
1150 | int lines_allocated = 1000; | |
1151 | int *line_charpos; | |
1152 | long mtime = 0; | |
1153 | int size; | |
1154 | ||
be8ca11b | 1155 | gdb_assert (s); |
8d749320 | 1156 | line_charpos = XNEWVEC (int, lines_allocated); |
c906108c | 1157 | if (fstat (desc, &st) < 0) |
05cba821 | 1158 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c | 1159 | |
eb822aa6 DE |
1160 | if (SYMTAB_OBJFILE (s) != NULL && SYMTAB_OBJFILE (s)->obfd != NULL) |
1161 | mtime = SYMTAB_OBJFILE (s)->mtime; | |
c906108c | 1162 | else if (exec_bfd) |
c04ea773 | 1163 | mtime = exec_bfd_mtime; |
c906108c SS |
1164 | |
1165 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1166 | warning (_("Source file is more recent than executable.")); |
c906108c | 1167 | |
c906108c | 1168 | { |
c906108c SS |
1169 | /* st_size might be a large type, but we only support source files whose |
1170 | size fits in an int. */ | |
1171 | size = (int) st.st_size; | |
1172 | ||
a9abc434 TT |
1173 | /* Use the heap, not the stack, because this may be pretty large, |
1174 | and we may run into various kinds of limits on stack size. */ | |
1175 | gdb::def_vector<char> data (size); | |
c906108c SS |
1176 | |
1177 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
a9abc434 | 1178 | size = myread (desc, data.data (), size); |
c906108c | 1179 | if (size < 0) |
05cba821 | 1180 | perror_with_name (symtab_to_filename_for_display (s)); |
9c3630e9 | 1181 | end = data.data () + size; |
a9abc434 | 1182 | p = &data[0]; |
c906108c SS |
1183 | line_charpos[0] = 0; |
1184 | nlines = 1; | |
1185 | while (p != end) | |
1186 | { | |
1187 | if (*p++ == '\n' | |
c5aa993b | 1188 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1189 | && p != end) |
1190 | { | |
1191 | if (nlines == lines_allocated) | |
1192 | { | |
1193 | lines_allocated *= 2; | |
1194 | line_charpos = | |
0efffb96 AC |
1195 | (int *) xrealloc ((char *) line_charpos, |
1196 | sizeof (int) * lines_allocated); | |
c906108c | 1197 | } |
a9abc434 | 1198 | line_charpos[nlines++] = p - data.data (); |
c906108c SS |
1199 | } |
1200 | } | |
c906108c | 1201 | } |
d4d4db8a | 1202 | |
c906108c SS |
1203 | s->nlines = nlines; |
1204 | s->line_charpos = | |
0efffb96 | 1205 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1206 | |
1207 | } | |
1208 | ||
c906108c | 1209 | \f |
c5aa993b | 1210 | |
c906108c SS |
1211 | /* Get full pathname and line number positions for a symtab. |
1212 | Return nonzero if line numbers may have changed. | |
1213 | Set *FULLNAME to actual name of the file as found by `openp', | |
1214 | or to 0 if the file is not found. */ | |
1215 | ||
1216 | static int | |
fba45db2 | 1217 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1218 | { |
5dc1a704 | 1219 | int linenums_changed = 0; |
c5aa993b | 1220 | |
5dc1a704 TT |
1221 | scoped_fd desc (open_source_file (s)); |
1222 | if (desc.get () < 0) | |
c906108c SS |
1223 | { |
1224 | if (fullname) | |
1225 | *fullname = NULL; | |
1226 | return 0; | |
c5aa993b | 1227 | } |
c906108c SS |
1228 | if (fullname) |
1229 | *fullname = s->fullname; | |
c5aa993b JM |
1230 | if (s->line_charpos == 0) |
1231 | linenums_changed = 1; | |
1232 | if (linenums_changed) | |
5dc1a704 | 1233 | find_source_lines (s, desc.get ()); |
c906108c SS |
1234 | return linenums_changed; |
1235 | } | |
1236 | ||
1237 | /* Print text describing the full name of the source file S | |
1238 | and the line number LINE and its corresponding character position. | |
1239 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1240 | can easily find it. | |
1241 | ||
1242 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1243 | ||
1244 | Return 1 if successful, 0 if could not find the file. */ | |
1245 | ||
1246 | int | |
fba45db2 KB |
1247 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1248 | CORE_ADDR pc) | |
c906108c SS |
1249 | { |
1250 | if (s->line_charpos == 0) | |
c5aa993b | 1251 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1252 | if (s->fullname == 0) |
1253 | return 0; | |
1254 | if (line > s->nlines) | |
1255 | /* Don't index off the end of the line_charpos array. */ | |
1256 | return 0; | |
1257 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
eb822aa6 | 1258 | mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), pc); |
c906108c SS |
1259 | |
1260 | current_source_line = line; | |
c906108c | 1261 | current_source_symtab = s; |
5166082f | 1262 | clear_lines_listed_range (); |
c906108c SS |
1263 | return 1; |
1264 | } | |
c906108c | 1265 | \f |
c5aa993b | 1266 | |
c906108c | 1267 | /* Print source lines from the file of symtab S, |
c378eb4e | 1268 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1269 | |
1270 | static void | |
dfaae886 | 1271 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1272 | print_source_lines_flags flags) |
c906108c | 1273 | { |
52f0bd74 AC |
1274 | int c; |
1275 | int desc; | |
f4dfd9c0 | 1276 | int noprint = 0; |
c906108c | 1277 | int nlines = stopline - line; |
79a45e25 | 1278 | struct ui_out *uiout = current_uiout; |
c906108c | 1279 | |
c378eb4e | 1280 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1281 | current_source_symtab = s; |
1282 | current_source_line = line; | |
1283 | first_line_listed = line; | |
1284 | ||
3e43a32a | 1285 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1286 | number. */ |
112e8700 | 1287 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1288 | { |
c378eb4e | 1289 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1290 | if ((s != last_source_visited) || (!last_source_error)) |
1291 | { | |
1292 | last_source_visited = s; | |
1293 | desc = open_source_file (s); | |
1294 | } | |
1295 | else | |
1296 | { | |
1297 | desc = last_source_error; | |
dfaae886 | 1298 | flags |= PRINT_SOURCE_LINES_NOERROR; |
c5aa993b | 1299 | } |
8b93c638 JM |
1300 | } |
1301 | else | |
1302 | { | |
f4dfd9c0 | 1303 | desc = last_source_error; |
8d297bbf | 1304 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1305 | noprint = 1; |
8b93c638 | 1306 | } |
c906108c | 1307 | |
f4dfd9c0 | 1308 | if (desc < 0 || noprint) |
c906108c SS |
1309 | { |
1310 | last_source_error = desc; | |
1311 | ||
dfaae886 | 1312 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1313 | { |
05cba821 JK |
1314 | const char *filename = symtab_to_filename_for_display (s); |
1315 | int len = strlen (filename) + 100; | |
224c3ddb | 1316 | char *name = (char *) alloca (len); |
08850b56 | 1317 | |
05cba821 | 1318 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1319 | print_sys_errmsg (name, errno); |
1320 | } | |
1321 | else | |
fc0ae648 | 1322 | { |
112e8700 SM |
1323 | uiout->field_int ("line", line); |
1324 | uiout->text ("\tin "); | |
56d397a3 | 1325 | |
23eb71e4 JK |
1326 | /* CLI expects only the "file" field. TUI expects only the |
1327 | "fullname" field (and TUI does break if "file" is printed). | |
1328 | MI expects both fields. ui_source_list is set only for CLI, | |
1329 | not for TUI. */ | |
112e8700 SM |
1330 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
1331 | uiout->field_string ("file", symtab_to_filename_for_display (s)); | |
1332 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) | |
8f1b8b82 JK |
1333 | { |
1334 | const char *s_fullname = symtab_to_fullname (s); | |
1335 | char *local_fullname; | |
1336 | ||
1337 | /* ui_out_field_string may free S_FULLNAME by calling | |
1338 | open_source_file for it again. See e.g., | |
1339 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1340 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1341 | strcpy (local_fullname, s_fullname); |
1342 | ||
112e8700 | 1343 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1344 | } |
23eb71e4 | 1345 | |
112e8700 | 1346 | uiout->text ("\n"); |
fc0ae648 | 1347 | } |
c906108c SS |
1348 | |
1349 | return; | |
1350 | } | |
1351 | ||
1352 | last_source_error = 0; | |
1353 | ||
1354 | if (s->line_charpos == 0) | |
1355 | find_source_lines (s, desc); | |
1356 | ||
1357 | if (line < 1 || line > s->nlines) | |
1358 | { | |
1359 | close (desc); | |
8a3fe4f8 | 1360 | error (_("Line number %d out of range; %s has %d lines."), |
05cba821 | 1361 | line, symtab_to_filename_for_display (s), s->nlines); |
c906108c SS |
1362 | } |
1363 | ||
1364 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1365 | { | |
1366 | close (desc); | |
05cba821 | 1367 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1368 | } |
1369 | ||
4a45905b TT |
1370 | gdb_file_up stream (fdopen (desc, FDOPEN_MODE)); |
1371 | clearerr (stream.get ()); | |
c906108c SS |
1372 | |
1373 | while (nlines-- > 0) | |
1374 | { | |
8b93c638 JM |
1375 | char buf[20]; |
1376 | ||
4a45905b | 1377 | c = fgetc (stream.get ()); |
8b93c638 JM |
1378 | if (c == EOF) |
1379 | break; | |
1380 | last_line_listed = current_source_line; | |
4cd29721 MM |
1381 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1382 | { | |
112e8700 SM |
1383 | uiout->text (symtab_to_filename_for_display (s)); |
1384 | uiout->text (":"); | |
4cd29721 | 1385 | } |
08850b56 | 1386 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
112e8700 | 1387 | uiout->text (buf); |
8b93c638 JM |
1388 | do |
1389 | { | |
1390 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1391 | { | |
08850b56 | 1392 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
112e8700 | 1393 | uiout->text (buf); |
8b93c638 JM |
1394 | } |
1395 | else if (c == 0177) | |
112e8700 | 1396 | uiout->text ("^?"); |
8b93c638 JM |
1397 | else if (c == '\r') |
1398 | { | |
1399 | /* Skip a \r character, but only before a \n. */ | |
4a45905b | 1400 | int c1 = fgetc (stream.get ()); |
8b93c638 JM |
1401 | |
1402 | if (c1 != '\n') | |
1403 | printf_filtered ("^%c", c + 0100); | |
1404 | if (c1 != EOF) | |
4a45905b | 1405 | ungetc (c1, stream.get ()); |
8b93c638 | 1406 | } |
8b93c638 JM |
1407 | else |
1408 | { | |
08850b56 | 1409 | xsnprintf (buf, sizeof (buf), "%c", c); |
112e8700 | 1410 | uiout->text (buf); |
8b93c638 JM |
1411 | } |
1412 | } | |
4a45905b | 1413 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1414 | } |
c906108c SS |
1415 | } |
1416 | \f | |
1417 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1418 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1419 | not the command line version, then the source is shown in the source |
c378eb4e | 1420 | window otherwise it is simply printed. */ |
c906108c | 1421 | |
c5aa993b | 1422 | void |
dfaae886 | 1423 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1424 | print_source_lines_flags flags) |
c906108c | 1425 | { |
dfaae886 | 1426 | print_source_lines_base (s, line, stopline, flags); |
c906108c SS |
1427 | } |
1428 | \f | |
c906108c SS |
1429 | /* Print info on range of pc's in a specified line. */ |
1430 | ||
1431 | static void | |
1d12d88f | 1432 | info_line_command (const char *arg, int from_tty) |
c906108c | 1433 | { |
c906108c | 1434 | CORE_ADDR start_pc, end_pc; |
c906108c | 1435 | |
6c5b2ebe PA |
1436 | std::vector<symtab_and_line> decoded_sals; |
1437 | symtab_and_line curr_sal; | |
1438 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1439 | |
1440 | if (arg == 0) | |
1441 | { | |
6c5b2ebe PA |
1442 | curr_sal.symtab = current_source_symtab; |
1443 | curr_sal.pspace = current_program_space; | |
5166082f | 1444 | if (last_line_listed != 0) |
6c5b2ebe | 1445 | curr_sal.line = last_line_listed; |
5166082f | 1446 | else |
6c5b2ebe | 1447 | curr_sal.line = current_source_line; |
5166082f | 1448 | |
6c5b2ebe | 1449 | sals = curr_sal; |
c906108c SS |
1450 | } |
1451 | else | |
1452 | { | |
6c5b2ebe PA |
1453 | decoded_sals = decode_line_with_last_displayed (arg, |
1454 | DECODE_LINE_LIST_MODE); | |
1455 | sals = decoded_sals; | |
c5aa993b | 1456 | |
c906108c SS |
1457 | dont_repeat (); |
1458 | } | |
1459 | ||
1460 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1461 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1462 | for (const auto &sal : sals) |
c906108c | 1463 | { |
f8eba3c6 TT |
1464 | if (sal.pspace != current_program_space) |
1465 | continue; | |
c5aa993b | 1466 | |
c906108c SS |
1467 | if (sal.symtab == 0) |
1468 | { | |
5af949e3 UW |
1469 | struct gdbarch *gdbarch = get_current_arch (); |
1470 | ||
a3f17187 | 1471 | printf_filtered (_("No line number information available")); |
c906108c SS |
1472 | if (sal.pc != 0) |
1473 | { | |
1474 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1475 | user about a source line, at least let them have the symbolic |
1476 | address. */ | |
c906108c SS |
1477 | printf_filtered (" for address "); |
1478 | wrap_here (" "); | |
5af949e3 | 1479 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1480 | } |
1481 | else | |
1482 | printf_filtered ("."); | |
1483 | printf_filtered ("\n"); | |
1484 | } | |
1485 | else if (sal.line > 0 | |
1486 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1487 | { | |
eb822aa6 DE |
1488 | struct gdbarch *gdbarch |
1489 | = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); | |
5af949e3 | 1490 | |
c906108c SS |
1491 | if (start_pc == end_pc) |
1492 | { | |
1493 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1494 | sal.line, |
1495 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1496 | wrap_here (" "); |
1497 | printf_filtered (" is at address "); | |
5af949e3 | 1498 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1499 | wrap_here (" "); |
1500 | printf_filtered (" but contains no code.\n"); | |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1505 | sal.line, |
1506 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1507 | wrap_here (" "); |
1508 | printf_filtered (" starts at address "); | |
5af949e3 | 1509 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1510 | wrap_here (" "); |
1511 | printf_filtered (" and ends at "); | |
5af949e3 | 1512 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1513 | printf_filtered (".\n"); |
1514 | } | |
1515 | ||
1516 | /* x/i should display this line's code. */ | |
5af949e3 | 1517 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1518 | |
1519 | /* Repeating "info line" should do the following line. */ | |
1520 | last_line_listed = sal.line + 1; | |
1521 | ||
1522 | /* If this is the only line, show the source code. If it could | |
1523 | not find the file, don't do anything special. */ | |
6c5b2ebe | 1524 | if (annotation_level && sals.size () == 1) |
c906108c SS |
1525 | identify_source_line (sal.symtab, sal.line, 0, start_pc); |
1526 | } | |
1527 | else | |
1528 | /* Is there any case in which we get here, and have an address | |
1529 | which the user would want to see? If we have debugging symbols | |
1530 | and no line numbers? */ | |
a3f17187 | 1531 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1532 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1533 | } |
c906108c SS |
1534 | } |
1535 | \f | |
1536 | /* Commands to search the source file for a regexp. */ | |
1537 | ||
c906108c | 1538 | static void |
0b39b52e | 1539 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1540 | { |
52f0bd74 | 1541 | int c; |
c906108c SS |
1542 | int line; |
1543 | char *msg; | |
1544 | ||
c906108c | 1545 | line = last_line_listed + 1; |
c906108c SS |
1546 | |
1547 | msg = (char *) re_comp (regex); | |
1548 | if (msg) | |
8a3fe4f8 | 1549 | error (("%s"), msg); |
c906108c SS |
1550 | |
1551 | if (current_source_symtab == 0) | |
1552 | select_source_symtab (0); | |
1553 | ||
77ad7394 TT |
1554 | scoped_fd desc (open_source_file (current_source_symtab)); |
1555 | if (desc.get () < 0) | |
05cba821 | 1556 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c SS |
1557 | |
1558 | if (current_source_symtab->line_charpos == 0) | |
77ad7394 | 1559 | find_source_lines (current_source_symtab, desc.get ()); |
c906108c SS |
1560 | |
1561 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1562 | error (_("Expression not found")); |
c906108c | 1563 | |
77ad7394 TT |
1564 | if (lseek (desc.get (), current_source_symtab->line_charpos[line - 1], 0) |
1565 | < 0) | |
05cba821 | 1566 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1567 | |
77ad7394 | 1568 | gdb_file_up stream (fdopen (desc.release (), FDOPEN_MODE)); |
4a45905b | 1569 | clearerr (stream.get ()); |
c5aa993b JM |
1570 | while (1) |
1571 | { | |
1572 | static char *buf = NULL; | |
aa1ee363 | 1573 | char *p; |
c5aa993b JM |
1574 | int cursize, newsize; |
1575 | ||
1576 | cursize = 256; | |
224c3ddb | 1577 | buf = (char *) xmalloc (cursize); |
c5aa993b JM |
1578 | p = buf; |
1579 | ||
4a45905b | 1580 | c = fgetc (stream.get ()); |
c5aa993b JM |
1581 | if (c == EOF) |
1582 | break; | |
1583 | do | |
c906108c | 1584 | { |
c5aa993b JM |
1585 | *p++ = c; |
1586 | if (p - buf == cursize) | |
1587 | { | |
1588 | newsize = cursize + cursize / 2; | |
224c3ddb | 1589 | buf = (char *) xrealloc (buf, newsize); |
c5aa993b JM |
1590 | p = buf + cursize; |
1591 | cursize = newsize; | |
1592 | } | |
c906108c | 1593 | } |
4a45905b | 1594 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1595 | |
7be570e7 JM |
1596 | /* Remove the \r, if any, at the end of the line, otherwise |
1597 | regular expressions that end with $ or \n won't work. */ | |
1598 | if (p - buf > 1 && p[-2] == '\r') | |
1599 | { | |
1600 | p--; | |
1601 | p[-1] = '\n'; | |
1602 | } | |
7be570e7 | 1603 | |
c378eb4e | 1604 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1605 | *p = 0; |
1606 | if (re_exec (buf) > 0) | |
1607 | { | |
c378eb4e | 1608 | /* Match! */ |
c5aa993b | 1609 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1610 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1611 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c5aa993b JM |
1612 | return; |
1613 | } | |
1614 | line++; | |
1615 | } | |
c906108c | 1616 | |
a3f17187 | 1617 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1618 | } |
1619 | ||
c906108c | 1620 | static void |
0b39b52e | 1621 | reverse_search_command (const char *regex, int from_tty) |
c906108c | 1622 | { |
52f0bd74 | 1623 | int c; |
c906108c SS |
1624 | int line; |
1625 | char *msg; | |
063190b6 | 1626 | |
c906108c | 1627 | line = last_line_listed - 1; |
c906108c SS |
1628 | |
1629 | msg = (char *) re_comp (regex); | |
1630 | if (msg) | |
8a3fe4f8 | 1631 | error (("%s"), msg); |
c906108c SS |
1632 | |
1633 | if (current_source_symtab == 0) | |
1634 | select_source_symtab (0); | |
1635 | ||
77ad7394 TT |
1636 | scoped_fd desc (open_source_file (current_source_symtab)); |
1637 | if (desc.get () < 0) | |
05cba821 | 1638 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c SS |
1639 | |
1640 | if (current_source_symtab->line_charpos == 0) | |
77ad7394 | 1641 | find_source_lines (current_source_symtab, desc.get ()); |
c906108c SS |
1642 | |
1643 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1644 | error (_("Expression not found")); |
c906108c | 1645 | |
77ad7394 TT |
1646 | if (lseek (desc.get (), current_source_symtab->line_charpos[line - 1], 0) |
1647 | < 0) | |
05cba821 | 1648 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1649 | |
77ad7394 | 1650 | gdb_file_up stream (fdopen (desc.release (), FDOPEN_MODE)); |
4a45905b | 1651 | clearerr (stream.get ()); |
c906108c SS |
1652 | while (line > 1) |
1653 | { | |
c378eb4e MS |
1654 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1655 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1656 | char *p = buf; |
c906108c | 1657 | |
4a45905b | 1658 | c = fgetc (stream.get ()); |
c906108c SS |
1659 | if (c == EOF) |
1660 | break; | |
c5aa993b JM |
1661 | do |
1662 | { | |
1663 | *p++ = c; | |
1664 | } | |
4a45905b | 1665 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1666 | |
7be570e7 JM |
1667 | /* Remove the \r, if any, at the end of the line, otherwise |
1668 | regular expressions that end with $ or \n won't work. */ | |
1669 | if (p - buf > 1 && p[-2] == '\r') | |
1670 | { | |
1671 | p--; | |
1672 | p[-1] = '\n'; | |
1673 | } | |
7be570e7 | 1674 | |
c906108c SS |
1675 | /* We now have a source line in buf; null terminate and match. */ |
1676 | *p = 0; | |
1677 | if (re_exec (buf) > 0) | |
1678 | { | |
c378eb4e | 1679 | /* Match! */ |
c5aa993b | 1680 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1681 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1682 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c906108c SS |
1683 | return; |
1684 | } | |
1685 | line--; | |
4a45905b TT |
1686 | if (fseek (stream.get (), |
1687 | current_source_symtab->line_charpos[line - 1], 0) < 0) | |
c906108c | 1688 | { |
05cba821 JK |
1689 | const char *filename; |
1690 | ||
05cba821 JK |
1691 | filename = symtab_to_filename_for_display (current_source_symtab); |
1692 | perror_with_name (filename); | |
c906108c SS |
1693 | } |
1694 | } | |
1695 | ||
a3f17187 | 1696 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1697 | return; |
1698 | } | |
2f61ca93 JB |
1699 | |
1700 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1701 | ||
1702 | static void | |
1703 | strip_trailing_directory_separator (char *path) | |
1704 | { | |
1705 | const int last = strlen (path) - 1; | |
1706 | ||
1707 | if (last < 0) | |
1708 | return; /* No stripping is needed if PATH is the empty string. */ | |
1709 | ||
1710 | if (IS_DIR_SEPARATOR (path[last])) | |
1711 | path[last] = '\0'; | |
1712 | } | |
1713 | ||
1714 | /* Return the path substitution rule that matches FROM. | |
1715 | Return NULL if no rule matches. */ | |
1716 | ||
1717 | static struct substitute_path_rule * | |
1718 | find_substitute_path_rule (const char *from) | |
1719 | { | |
1720 | struct substitute_path_rule *rule = substitute_path_rules; | |
1721 | ||
1722 | while (rule != NULL) | |
1723 | { | |
1724 | if (FILENAME_CMP (rule->from, from) == 0) | |
1725 | return rule; | |
1726 | rule = rule->next; | |
1727 | } | |
1728 | ||
1729 | return NULL; | |
1730 | } | |
1731 | ||
1732 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1733 | The new rule will replace FROM into TO. */ | |
1734 | ||
29b0e8a2 | 1735 | void |
2f61ca93 JB |
1736 | add_substitute_path_rule (char *from, char *to) |
1737 | { | |
1738 | struct substitute_path_rule *rule; | |
8d749320 | 1739 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1740 | |
2f61ca93 JB |
1741 | new_rule->from = xstrdup (from); |
1742 | new_rule->to = xstrdup (to); | |
1743 | new_rule->next = NULL; | |
1744 | ||
1745 | /* If the list of rules are empty, then insert the new rule | |
1746 | at the head of the list. */ | |
1747 | ||
1748 | if (substitute_path_rules == NULL) | |
1749 | { | |
1750 | substitute_path_rules = new_rule; | |
1751 | return; | |
1752 | } | |
1753 | ||
1754 | /* Otherwise, skip to the last rule in our list and then append | |
1755 | the new rule. */ | |
1756 | ||
1757 | rule = substitute_path_rules; | |
1758 | while (rule->next != NULL) | |
1759 | rule = rule->next; | |
1760 | ||
1761 | rule->next = new_rule; | |
1762 | } | |
1763 | ||
1764 | /* Remove the given source path substitution rule from the current list | |
1765 | of rules. The memory allocated for that rule is also deallocated. */ | |
1766 | ||
1767 | static void | |
1768 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1769 | { | |
1770 | if (rule == substitute_path_rules) | |
1771 | substitute_path_rules = rule->next; | |
1772 | else | |
1773 | { | |
1774 | struct substitute_path_rule *prev = substitute_path_rules; | |
1775 | ||
1776 | while (prev != NULL && prev->next != rule) | |
1777 | prev = prev->next; | |
1778 | ||
1779 | gdb_assert (prev != NULL); | |
1780 | ||
1781 | prev->next = rule->next; | |
1782 | } | |
1783 | ||
1784 | xfree (rule->from); | |
1785 | xfree (rule->to); | |
1786 | xfree (rule); | |
1787 | } | |
1788 | ||
1789 | /* Implement the "show substitute-path" command. */ | |
1790 | ||
1791 | static void | |
a0d65762 | 1792 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1793 | { |
1794 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1795 | char *from = NULL; |
1796 | ||
773a1edc | 1797 | gdb_argv argv (args); |
2f61ca93 JB |
1798 | |
1799 | /* We expect zero or one argument. */ | |
1800 | ||
1801 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1802 | error (_("Too many arguments in command")); | |
1803 | ||
1804 | if (argv != NULL && argv[0] != NULL) | |
1805 | from = argv[0]; | |
1806 | ||
1807 | /* Print the substitution rules. */ | |
1808 | ||
1809 | if (from != NULL) | |
1810 | printf_filtered | |
1811 | (_("Source path substitution rule matching `%s':\n"), from); | |
1812 | else | |
1813 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1814 | ||
1815 | while (rule != NULL) | |
1816 | { | |
1e2ccb61 | 1817 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1818 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1819 | rule = rule->next; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | /* Implement the "unset substitute-path" command. */ | |
1824 | ||
1825 | static void | |
a0d65762 | 1826 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1827 | { |
1828 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1829 | gdb_argv argv (args); |
2f61ca93 JB |
1830 | char *from = NULL; |
1831 | int rule_found = 0; | |
1832 | ||
1833 | /* This function takes either 0 or 1 argument. */ | |
1834 | ||
1835 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1836 | error (_("Incorrect usage, too many arguments in command")); | |
1837 | ||
1838 | if (argv != NULL && argv[0] != NULL) | |
1839 | from = argv[0]; | |
1840 | ||
1841 | /* If the user asked for all the rules to be deleted, ask him | |
1842 | to confirm and give him a chance to abort before the action | |
1843 | is performed. */ | |
1844 | ||
1845 | if (from == NULL | |
1846 | && !query (_("Delete all source path substitution rules? "))) | |
1847 | error (_("Canceled")); | |
1848 | ||
1849 | /* Delete the rule matching the argument. No argument means that | |
1850 | all rules should be deleted. */ | |
1851 | ||
1852 | while (rule != NULL) | |
1853 | { | |
1854 | struct substitute_path_rule *next = rule->next; | |
1855 | ||
1856 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1857 | { | |
1858 | delete_substitute_path_rule (rule); | |
1859 | rule_found = 1; | |
1860 | } | |
1861 | ||
1862 | rule = next; | |
1863 | } | |
1864 | ||
1865 | /* If the user asked for a specific rule to be deleted but | |
1866 | we could not find it, then report an error. */ | |
1867 | ||
1868 | if (from != NULL && !rule_found) | |
1869 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1870 | |
1871 | forget_cached_source_info (); | |
2f61ca93 JB |
1872 | } |
1873 | ||
1874 | /* Add a new source path substitution rule. */ | |
1875 | ||
1876 | static void | |
a0d65762 | 1877 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1878 | { |
2f61ca93 JB |
1879 | struct substitute_path_rule *rule; |
1880 | ||
773a1edc | 1881 | gdb_argv argv (args); |
2f61ca93 JB |
1882 | |
1883 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1884 | error (_("Incorrect usage, too few arguments in command")); | |
1885 | ||
1886 | if (argv[2] != NULL) | |
1887 | error (_("Incorrect usage, too many arguments in command")); | |
1888 | ||
1889 | if (*(argv[0]) == '\0') | |
1890 | error (_("First argument must be at least one character long")); | |
1891 | ||
1892 | /* Strip any trailing directory separator character in either FROM | |
1893 | or TO. The substitution rule already implicitly contains them. */ | |
1894 | strip_trailing_directory_separator (argv[0]); | |
1895 | strip_trailing_directory_separator (argv[1]); | |
1896 | ||
1897 | /* If a rule with the same "from" was previously defined, then | |
1898 | delete it. This new rule replaces it. */ | |
1899 | ||
1900 | rule = find_substitute_path_rule (argv[0]); | |
1901 | if (rule != NULL) | |
1902 | delete_substitute_path_rule (rule); | |
1903 | ||
1904 | /* Insert the new substitution rule. */ | |
1905 | ||
1906 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1907 | forget_cached_source_info (); |
2f61ca93 JB |
1908 | } |
1909 | ||
c906108c SS |
1910 | \f |
1911 | void | |
fba45db2 | 1912 | _initialize_source (void) |
c906108c SS |
1913 | { |
1914 | struct cmd_list_element *c; | |
433759f7 | 1915 | |
c906108c SS |
1916 | current_source_symtab = 0; |
1917 | init_source_path (); | |
1918 | ||
1919 | /* The intention is to use POSIX Basic Regular Expressions. | |
1920 | Always use the GNU regex routine for consistency across all hosts. | |
1921 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1922 | just an approximation. */ | |
1923 | re_set_syntax (RE_SYNTAX_GREP); | |
1924 | ||
1a966eab AC |
1925 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1926 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1927 | Forget cached info on source file locations and line positions.\n\ |
1928 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1929 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1930 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1931 | &cmdlist); |
1932 | ||
1933 | if (dbx_commands) | |
c5aa993b | 1934 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1935 | |
5ba2abeb | 1936 | set_cmd_completer (c, filename_completer); |
c906108c | 1937 | |
99e7ae30 DE |
1938 | add_setshow_optional_filename_cmd ("directories", |
1939 | class_files, | |
1940 | &source_path, | |
1941 | _("\ | |
1942 | Set the search path for finding source files."), | |
1943 | _("\ | |
1944 | Show the search path for finding source files."), | |
1945 | _("\ | |
c906108c | 1946 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1947 | $cdir in the path means the compilation directory of the source file.\n\ |
1948 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1949 | appending these directories if necessary.\n\ | |
1950 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1951 | set_directories_command, | |
1952 | show_directories_command, | |
1953 | &setlist, &showlist); | |
c906108c | 1954 | |
11db9430 | 1955 | add_info ("source", info_source_command, |
1bedd215 | 1956 | _("Information about the current source file.")); |
c906108c | 1957 | |
11db9430 | 1958 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1959 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1960 | Line can be specified as\n\ |
1961 | LINENUM, to list around that line in current file,\n\ | |
1962 | FILE:LINENUM, to list around that line in that file,\n\ | |
1963 | FUNCTION, to list around beginning of that function,\n\ | |
1964 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1965 | Default is to describe the last source line that was listed.\n\n\ |
1966 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1967 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1968 | The address is also stored as the value of \"$_\".")); |
c906108c | 1969 | |
1bedd215 AC |
1970 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1971 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1972 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1973 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1974 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1975 | |
1bedd215 AC |
1976 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1977 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1978 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1979 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1980 | |
7f7cc265 | 1981 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1982 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1983 | Show number of source lines gdb will list by default."), _("\ |
1984 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1985 | the \"list\" argument explicitly specifies some other number).\n\ | |
1986 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1987 | NULL, |
1988 | show_lines_to_list, | |
1989 | &setlist, &showlist); | |
2f61ca93 JB |
1990 | |
1991 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1992 | _("\ | |
7ef2b397 JB |
1993 | Usage: set substitute-path FROM TO\n\ |
1994 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
1995 | If a substitution rule was previously set for FROM, the old rule\n\ | |
1996 | is replaced by the new one."), | |
1997 | &setlist); | |
2f61ca93 JB |
1998 | |
1999 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2000 | _("\ | |
7ef2b397 JB |
2001 | Usage: unset substitute-path [FROM]\n\ |
2002 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2003 | is not specified, all substituting rules are deleted.\n\ | |
2004 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2005 | &unsetlist); |
2006 | ||
2007 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2008 | _("\ |
2009 | Usage: show substitute-path [FROM]\n\ | |
2010 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2011 | is not specified, print all substitution rules."), | |
2f61ca93 | 2012 | &showlist); |
1b56eb55 JK |
2013 | |
2014 | add_setshow_enum_cmd ("filename-display", class_files, | |
2015 | filename_display_kind_names, | |
2016 | &filename_display_string, _("\ | |
2017 | Set how to display filenames."), _("\ | |
2018 | Show how to display filenames."), _("\ | |
2019 | filename-display can be:\n\ | |
2020 | basename - display only basename of a filename\n\ | |
2021 | relative - display a filename relative to the compilation directory\n\ | |
2022 | absolute - display an absolute filename\n\ | |
2023 | By default, relative filenames are displayed."), | |
2024 | NULL, | |
2025 | show_filename_display_string, | |
2026 | &setlist, &showlist); | |
2027 | ||
c906108c | 2028 | } |