Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
42a4f53d | 2 | Copyright (C) 1986-2019 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" | |
268a13a5 | 29 | #include "gdbsupport/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" |
268a13a5 TT |
44 | #include "gdbsupport/enum-flags.h" |
45 | #include "gdbsupport/scoped_fd.h" | |
325fac50 | 46 | #include <algorithm> |
268a13a5 | 47 | #include "gdbsupport/pathstuff.h" |
62f29fda | 48 | #include "source-cache.h" |
c906108c | 49 | |
c906108c SS |
50 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
51 | #define FDOPEN_MODE FOPEN_RB | |
52 | ||
c906108c SS |
53 | /* Path of directories to search for source files. |
54 | Same format as the PATH environment variable's value. */ | |
55 | ||
56 | char *source_path; | |
57 | ||
2f61ca93 JB |
58 | /* Support for source path substitution commands. */ |
59 | ||
60 | struct substitute_path_rule | |
61 | { | |
62 | char *from; | |
63 | char *to; | |
64 | struct substitute_path_rule *next; | |
65 | }; | |
66 | ||
67 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
68 | ||
c906108c SS |
69 | /* Symtab of default file for listing lines of. */ |
70 | ||
0378c332 | 71 | static struct symtab *current_source_symtab; |
c906108c SS |
72 | |
73 | /* Default next line to list. */ | |
74 | ||
0378c332 | 75 | static int current_source_line; |
c906108c | 76 | |
6c95b8df PA |
77 | static struct program_space *current_source_pspace; |
78 | ||
c906108c SS |
79 | /* Default number of lines to print with commands like "list". |
80 | This is based on guessing how many long (i.e. more than chars_per_line | |
81 | characters) lines there will be. To be completely correct, "list" | |
82 | and friends should be rewritten to count characters and see where | |
83 | things are wrapping, but that would be a fair amount of work. */ | |
84 | ||
f43f8571 | 85 | static int lines_to_list = 10; |
920d2a44 AC |
86 | static void |
87 | show_lines_to_list (struct ui_file *file, int from_tty, | |
88 | struct cmd_list_element *c, const char *value) | |
89 | { | |
3e43a32a MS |
90 | fprintf_filtered (file, |
91 | _("Number of source lines gdb " | |
92 | "will list by default is %s.\n"), | |
920d2a44 AC |
93 | value); |
94 | } | |
c906108c | 95 | |
1b56eb55 JK |
96 | /* Possible values of 'set filename-display'. */ |
97 | static const char filename_display_basename[] = "basename"; | |
98 | static const char filename_display_relative[] = "relative"; | |
99 | static const char filename_display_absolute[] = "absolute"; | |
100 | ||
101 | static const char *const filename_display_kind_names[] = { | |
102 | filename_display_basename, | |
103 | filename_display_relative, | |
104 | filename_display_absolute, | |
105 | NULL | |
106 | }; | |
107 | ||
108 | static const char *filename_display_string = filename_display_relative; | |
109 | ||
110 | static void | |
111 | show_filename_display_string (struct ui_file *file, int from_tty, | |
112 | struct cmd_list_element *c, const char *value) | |
113 | { | |
114 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
115 | } | |
116 | ||
c906108c SS |
117 | /* Line number of last line printed. Default for various commands. |
118 | current_source_line is usually, but not always, the same as this. */ | |
119 | ||
120 | static int last_line_listed; | |
121 | ||
5166082f PA |
122 | /* First line number listed by last listing command. If 0, then no |
123 | source lines have yet been listed since the last time the current | |
124 | source line was changed. */ | |
c906108c SS |
125 | |
126 | static int first_line_listed; | |
127 | ||
128 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 129 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
130 | |
131 | static struct symtab *last_source_visited = NULL; | |
b08b16c8 | 132 | static bool last_source_error = false; |
c906108c | 133 | \f |
0378c332 FN |
134 | /* Return the first line listed by print_source_lines. |
135 | Used by command interpreters to request listing from | |
c378eb4e | 136 | a previous point. */ |
0378c332 FN |
137 | |
138 | int | |
139 | get_first_line_listed (void) | |
140 | { | |
141 | return first_line_listed; | |
142 | } | |
143 | ||
5166082f PA |
144 | /* Clear line listed range. This makes the next "list" center the |
145 | printed source lines around the current source line. */ | |
146 | ||
147 | static void | |
148 | clear_lines_listed_range (void) | |
149 | { | |
150 | first_line_listed = 0; | |
151 | last_line_listed = 0; | |
152 | } | |
153 | ||
0378c332 FN |
154 | /* Return the default number of lines to print with commands like the |
155 | cli "list". The caller of print_source_lines must use this to | |
156 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 157 | as it does not automatically use this value. */ |
0378c332 FN |
158 | |
159 | int | |
160 | get_lines_to_list (void) | |
161 | { | |
162 | return lines_to_list; | |
163 | } | |
164 | ||
165 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 166 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
167 | |
168 | struct symtab_and_line | |
169 | get_current_source_symtab_and_line (void) | |
170 | { | |
51abb421 | 171 | symtab_and_line cursal; |
0378c332 | 172 | |
6c95b8df | 173 | cursal.pspace = current_source_pspace; |
0378c332 FN |
174 | cursal.symtab = current_source_symtab; |
175 | cursal.line = current_source_line; | |
53cb0458 FN |
176 | cursal.pc = 0; |
177 | cursal.end = 0; | |
0378c332 FN |
178 | |
179 | return cursal; | |
180 | } | |
181 | ||
53cb0458 FN |
182 | /* If the current source file for listing is not set, try and get a default. |
183 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 184 | It may err out if a default cannot be determined. |
53cb0458 FN |
185 | We must be cautious about where it is called, as it can recurse as the |
186 | process of determining a new default may call the caller! | |
187 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 188 | we have without erroring out or trying to get a default. */ |
0378c332 | 189 | |
53cb0458 FN |
190 | void |
191 | set_default_source_symtab_and_line (void) | |
0378c332 | 192 | { |
0378c332 | 193 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 194 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 195 | |
c378eb4e | 196 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
197 | if (current_source_symtab == 0) |
198 | select_source_symtab (0); | |
0378c332 FN |
199 | } |
200 | ||
201 | /* Return the current default file for listing and next line to list | |
202 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 203 | and set the current default to whatever is in SAL. |
c378eb4e | 204 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
205 | |
206 | struct symtab_and_line | |
51abb421 | 207 | set_current_source_symtab_and_line (const symtab_and_line &sal) |
0378c332 | 208 | { |
51abb421 | 209 | symtab_and_line cursal; |
6c95b8df PA |
210 | |
211 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
212 | cursal.symtab = current_source_symtab; |
213 | cursal.line = current_source_line; | |
6c95b8df PA |
214 | cursal.pc = 0; |
215 | cursal.end = 0; | |
0378c332 | 216 | |
51abb421 PA |
217 | current_source_pspace = sal.pspace; |
218 | current_source_symtab = sal.symtab; | |
219 | current_source_line = sal.line; | |
6c95b8df | 220 | |
5166082f PA |
221 | /* Force the next "list" to center around the current line. */ |
222 | clear_lines_listed_range (); | |
223 | ||
0378c332 FN |
224 | return cursal; |
225 | } | |
226 | ||
c378eb4e | 227 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
228 | |
229 | void | |
230 | clear_current_source_symtab_and_line (void) | |
231 | { | |
232 | current_source_symtab = 0; | |
233 | current_source_line = 0; | |
234 | } | |
c5aa993b | 235 | |
583068ca | 236 | /* See source.h. */ |
c906108c SS |
237 | |
238 | void | |
aa1ee363 | 239 | select_source_symtab (struct symtab *s) |
c906108c | 240 | { |
c906108c SS |
241 | if (s) |
242 | { | |
243 | current_source_symtab = s; | |
244 | current_source_line = 1; | |
6c95b8df | 245 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
246 | return; |
247 | } | |
248 | ||
249 | if (current_source_symtab) | |
250 | return; | |
251 | ||
252 | /* Make the default place to list be the function `main' | |
253 | if one exists. */ | |
d12307c1 | 254 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0).symbol) |
c906108c | 255 | { |
6c5b2ebe PA |
256 | std::vector<symtab_and_line> sals |
257 | = decode_line_with_current_source (main_name (), | |
258 | DECODE_LINE_FUNFIRSTLINE); | |
259 | const symtab_and_line &sal = sals[0]; | |
6c95b8df | 260 | current_source_pspace = sal.pspace; |
c906108c | 261 | current_source_symtab = sal.symtab; |
325fac50 | 262 | current_source_line = std::max (sal.line - (lines_to_list - 1), 1); |
c906108c | 263 | if (current_source_symtab) |
c5aa993b | 264 | return; |
c906108c | 265 | } |
c5aa993b | 266 | |
8340a3fb LM |
267 | /* Alright; find the last file in the symtab list (ignoring .h's |
268 | and namespace symtabs). */ | |
c906108c SS |
269 | |
270 | current_source_line = 1; | |
271 | ||
2030c079 | 272 | for (objfile *ofp : current_program_space->objfiles ()) |
c906108c | 273 | { |
b669c953 | 274 | for (compunit_symtab *cu : ofp->compunits ()) |
c906108c | 275 | { |
8b31193a TT |
276 | for (symtab *symtab : compunit_filetabs (cu)) |
277 | { | |
278 | const char *name = symtab->filename; | |
279 | int len = strlen (name); | |
280 | ||
281 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
282 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
283 | { | |
284 | current_source_pspace = current_program_space; | |
285 | current_source_symtab = symtab; | |
286 | } | |
287 | } | |
c906108c SS |
288 | } |
289 | } | |
6c95b8df | 290 | |
c906108c SS |
291 | if (current_source_symtab) |
292 | return; | |
293 | ||
2030c079 | 294 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
295 | { |
296 | if (objfile->sf) | |
297 | s = objfile->sf->qf->find_last_source_symtab (objfile); | |
298 | if (s) | |
299 | current_source_symtab = s; | |
300 | } | |
c906108c SS |
301 | if (current_source_symtab) |
302 | return; | |
303 | ||
8a3fe4f8 | 304 | error (_("Can't find a default source file")); |
c906108c SS |
305 | } |
306 | \f | |
99e7ae30 DE |
307 | /* Handler for "set directories path-list" command. |
308 | "set dir mumble" doesn't prepend paths, it resets the entire | |
309 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
310 | ||
311 | static void | |
eb4c3f4a TT |
312 | set_directories_command (const char *args, |
313 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
314 | { |
315 | /* This is the value that was set. | |
316 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
317 | char *set_path = source_path; | |
318 | ||
319 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
320 | the list by calling init_source_path. If they appear earlier in | |
321 | SET_PATH then mod_path will move them appropriately. | |
322 | mod_path will also remove duplicates. */ | |
323 | init_source_path (); | |
324 | if (*set_path != '\0') | |
325 | mod_path (set_path, &source_path); | |
326 | ||
327 | xfree (set_path); | |
328 | } | |
329 | ||
330 | /* Print the list of source directories. | |
331 | This is used by the "ld" command, so it has the signature of a command | |
332 | function. */ | |
333 | ||
c906108c | 334 | static void |
99e7ae30 | 335 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
336 | { |
337 | puts_filtered ("Source directories searched: "); | |
338 | puts_filtered (source_path); | |
339 | puts_filtered ("\n"); | |
340 | } | |
341 | ||
99e7ae30 DE |
342 | /* Handler for "show directories" command. */ |
343 | ||
344 | static void | |
345 | show_directories_command (struct ui_file *file, int from_tty, | |
346 | struct cmd_list_element *c, const char *value) | |
347 | { | |
348 | show_directories_1 (NULL, from_tty); | |
349 | } | |
350 | ||
583068ca | 351 | /* See source.h. */ |
00174a86 TT |
352 | |
353 | void | |
354 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
355 | { | |
b669c953 | 356 | for (compunit_symtab *cu : objfile->compunits ()) |
00174a86 | 357 | { |
d5da8b3c | 358 | for (symtab *s : compunit_filetabs (cu)) |
00174a86 | 359 | { |
d5da8b3c TT |
360 | if (s->fullname != NULL) |
361 | { | |
362 | xfree (s->fullname); | |
363 | s->fullname = NULL; | |
364 | } | |
00174a86 | 365 | } |
00174a86 | 366 | } |
6f809020 DE |
367 | |
368 | if (objfile->sf) | |
369 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
370 | } |
371 | ||
583068ca | 372 | /* See source.h. */ |
c906108c SS |
373 | |
374 | void | |
fba45db2 | 375 | forget_cached_source_info (void) |
c906108c | 376 | { |
6c95b8df | 377 | struct program_space *pspace; |
c906108c | 378 | |
6c95b8df | 379 | ALL_PSPACES (pspace) |
2030c079 | 380 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
381 | { |
382 | forget_cached_source_info_for_objfile (objfile); | |
383 | } | |
c4e86dd4 | 384 | |
62f29fda | 385 | g_source_cache.clear (); |
c4e86dd4 | 386 | last_source_visited = NULL; |
c906108c SS |
387 | } |
388 | ||
389 | void | |
fba45db2 | 390 | init_source_path (void) |
c906108c SS |
391 | { |
392 | char buf[20]; | |
393 | ||
08850b56 | 394 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 395 | source_path = xstrdup (buf); |
c906108c SS |
396 | forget_cached_source_info (); |
397 | } | |
398 | ||
399 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 400 | |
28da1647 | 401 | static void |
5fed81ff | 402 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
403 | { |
404 | dont_repeat (); | |
c378eb4e | 405 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
406 | if (dirname == 0) |
407 | { | |
80618b99 | 408 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 409 | { |
b8c9b27d | 410 | xfree (source_path); |
c906108c SS |
411 | init_source_path (); |
412 | } | |
413 | } | |
414 | else | |
415 | { | |
416 | mod_path (dirname, &source_path); | |
c4e86dd4 | 417 | forget_cached_source_info (); |
c906108c SS |
418 | } |
419 | if (from_tty) | |
99e7ae30 | 420 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
421 | } |
422 | ||
13d35ae5 AS |
423 | /* Add a path given with the -d command line switch. |
424 | This will not be quoted so we must not treat spaces as separators. */ | |
425 | ||
426 | void | |
5614fb77 | 427 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
428 | { |
429 | add_path (dirname, &source_path, 0); | |
430 | } | |
431 | ||
c906108c SS |
432 | /* Add zero or more directories to the front of an arbitrary path. */ |
433 | ||
434 | void | |
5614fb77 | 435 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
436 | { |
437 | add_path (dirname, which_path, 1); | |
438 | } | |
439 | ||
440 | /* Workhorse of mod_path. Takes an extra argument to determine | |
441 | if dirname should be parsed for separators that indicate multiple | |
442 | directories. This allows for interfaces that pre-parse the dirname | |
443 | and allow specification of traditional separator characters such | |
c378eb4e | 444 | as space or tab. */ |
c04e0a08 JJ |
445 | |
446 | void | |
5614fb77 | 447 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
448 | { |
449 | char *old = *which_path; | |
450 | int prefix = 0; | |
e80aaf61 | 451 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
452 | |
453 | if (dirname == 0) | |
454 | return; | |
455 | ||
13d35ae5 AS |
456 | if (parse_separators) |
457 | { | |
458 | /* This will properly parse the space and tab separators | |
e4ab2fad | 459 | and any quotes that may exist. */ |
773a1edc | 460 | gdb_argv argv (dirname); |
e4ab2fad | 461 | |
773a1edc TT |
462 | for (char *arg : argv) |
463 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
464 | } |
465 | else | |
e80aaf61 | 466 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 467 | |
e80aaf61 | 468 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) |
c906108c | 469 | { |
e80aaf61 | 470 | char *name = name_up.get (); |
aa1ee363 | 471 | char *p; |
c906108c | 472 | struct stat st; |
db68fbe2 | 473 | gdb::unique_xmalloc_ptr<char> new_name_holder; |
c906108c | 474 | |
e4ab2fad JK |
475 | /* Spaces and tabs will have been removed by buildargv(). |
476 | NAME is the start of the directory. | |
477 | P is the '\0' following the end. */ | |
478 | p = name + strlen (name); | |
13d35ae5 AS |
479 | |
480 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 481 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 482 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 483 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 484 | #endif |
13d35ae5 | 485 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 486 | /* Sigh. "foo/" => "foo" */ |
c906108c | 487 | --p; |
c906108c SS |
488 | *p = '\0'; |
489 | ||
7be570e7 | 490 | while (p > name && p[-1] == '.') |
c906108c SS |
491 | { |
492 | if (p - name == 1) | |
493 | { | |
494 | /* "." => getwd (). */ | |
495 | name = current_directory; | |
496 | goto append; | |
497 | } | |
fe4e3eb8 | 498 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
499 | { |
500 | if (p - name == 2) | |
501 | { | |
502 | /* "/." => "/". */ | |
503 | *--p = '\0'; | |
504 | goto append; | |
505 | } | |
506 | else | |
507 | { | |
508 | /* "...foo/." => "...foo". */ | |
509 | p -= 2; | |
510 | *p = '\0'; | |
511 | continue; | |
512 | } | |
513 | } | |
514 | else | |
515 | break; | |
516 | } | |
517 | ||
518 | if (name[0] == '~') | |
db68fbe2 | 519 | new_name_holder.reset (tilde_expand (name)); |
c3690141 | 520 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 521 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
db68fbe2 | 522 | new_name_holder.reset (concat (name, ".", (char *) NULL)); |
7be570e7 | 523 | #endif |
fe4e3eb8 | 524 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
db68fbe2 TT |
525 | new_name_holder.reset (concat (current_directory, SLASH_STRING, name, |
526 | (char *) NULL)); | |
c906108c | 527 | else |
db68fbe2 TT |
528 | new_name_holder.reset (savestring (name, p - name)); |
529 | name = new_name_holder.get (); | |
c906108c SS |
530 | |
531 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
532 | if (name[0] != '$') |
533 | { | |
534 | /* These are warnings, not errors, since we don't want a | |
535 | non-existent directory in a .gdbinit file to stop processing | |
536 | of the .gdbinit file. | |
537 | ||
538 | Whether they get added to the path is more debatable. Current | |
539 | answer is yes, in case the user wants to go make the directory | |
540 | or whatever. If the directory continues to not exist/not be | |
541 | a directory/etc, then having them in the path should be | |
542 | harmless. */ | |
543 | if (stat (name, &st) < 0) | |
544 | { | |
545 | int save_errno = errno; | |
433759f7 | 546 | |
c5aa993b JM |
547 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
548 | print_sys_errmsg (name, save_errno); | |
549 | } | |
550 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 551 | warning (_("%s is not a directory."), name); |
c5aa993b | 552 | } |
c906108c SS |
553 | |
554 | append: | |
555 | { | |
aa1ee363 | 556 | unsigned int len = strlen (name); |
5ee4ed9f | 557 | char tinybuf[2]; |
c906108c SS |
558 | |
559 | p = *which_path; | |
5e3f4fab | 560 | while (1) |
c906108c | 561 | { |
5e3f4fab EBM |
562 | /* FIXME: we should use realpath() or its work-alike |
563 | before comparing. Then all the code above which | |
564 | removes excess slashes and dots could simply go away. */ | |
565 | if (!filename_ncmp (p, name, len) | |
566 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
567 | { | |
568 | /* Found it in the search path, remove old copy. */ | |
569 | if (p > *which_path) | |
570 | { | |
571 | /* Back over leading separator. */ | |
572 | p--; | |
573 | } | |
574 | if (prefix > p - *which_path) | |
575 | { | |
576 | /* Same dir twice in one cmd. */ | |
577 | goto skip_dup; | |
578 | } | |
579 | /* Copy from next '\0' or ':'. */ | |
580 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
581 | } | |
582 | p = strchr (p, DIRNAME_SEPARATOR); | |
583 | if (p != 0) | |
584 | ++p; | |
585 | else | |
586 | break; | |
c906108c | 587 | } |
c906108c | 588 | |
5ee4ed9f JK |
589 | tinybuf[0] = DIRNAME_SEPARATOR; |
590 | tinybuf[1] = '\0'; | |
c906108c | 591 | |
5ee4ed9f JK |
592 | /* If we have already tacked on a name(s) in this command, |
593 | be sure they stay on the front as we tack on some | |
594 | more. */ | |
595 | if (prefix) | |
596 | { | |
597 | char *temp, c; | |
598 | ||
599 | c = old[prefix]; | |
600 | old[prefix] = '\0'; | |
601 | temp = concat (old, tinybuf, name, (char *)NULL); | |
602 | old[prefix] = c; | |
603 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
604 | prefix = strlen (temp); | |
605 | xfree (temp); | |
606 | } | |
607 | else | |
608 | { | |
609 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
610 | old, (char *)NULL); | |
611 | prefix = strlen (name); | |
c906108c | 612 | } |
5ee4ed9f JK |
613 | xfree (old); |
614 | old = *which_path; | |
c906108c | 615 | } |
82ae4854 | 616 | skip_dup: |
b27cf2b3 | 617 | ; |
c5aa993b | 618 | } |
c906108c SS |
619 | } |
620 | ||
621 | ||
622 | static void | |
1d12d88f | 623 | info_source_command (const char *ignore, int from_tty) |
c906108c | 624 | { |
52f0bd74 | 625 | struct symtab *s = current_source_symtab; |
b6577aab | 626 | struct compunit_symtab *cust; |
c906108c SS |
627 | |
628 | if (!s) | |
629 | { | |
a3f17187 | 630 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
631 | return; |
632 | } | |
b6577aab DE |
633 | |
634 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 635 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
636 | if (SYMTAB_DIRNAME (s) != NULL) |
637 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 638 | if (s->fullname) |
a3f17187 | 639 | printf_filtered (_("Located in %s\n"), s->fullname); |
cb44333d TT |
640 | const std::vector<off_t> *offsets; |
641 | if (g_source_cache.get_line_charpos (s, &offsets)) | |
642 | printf_filtered (_("Contains %d line%s.\n"), (int) offsets->size (), | |
643 | offsets->size () == 1 ? "" : "s"); | |
c906108c | 644 | |
a3f17187 | 645 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
646 | printf_filtered (_("Producer is %s.\n"), |
647 | COMPUNIT_PRODUCER (cust) != NULL | |
648 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 649 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 650 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 651 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 652 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 653 | ? "Includes" : "Does not include"); |
c906108c | 654 | } |
c5aa993b | 655 | \f |
c906108c | 656 | |
f1b620e9 MG |
657 | /* Helper function to remove characters from the start of PATH so that |
658 | PATH can then be appended to a directory name. We remove leading drive | |
659 | letters (for dos) as well as leading '/' characters and './' | |
660 | sequences. */ | |
661 | ||
662 | const char * | |
663 | prepare_path_for_appending (const char *path) | |
664 | { | |
665 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ | |
666 | if (HAS_DRIVE_SPEC (path)) | |
667 | path = STRIP_DRIVE_SPEC (path); | |
668 | ||
669 | const char *old_path; | |
670 | do | |
671 | { | |
672 | old_path = path; | |
673 | ||
674 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ | |
675 | while (IS_DIR_SEPARATOR(path[0])) | |
676 | path++; | |
677 | ||
678 | /* ./foo => foo */ | |
679 | while (path[0] == '.' && IS_DIR_SEPARATOR (path[1])) | |
680 | path += 2; | |
681 | } | |
682 | while (old_path != path); | |
683 | ||
684 | return path; | |
685 | } | |
686 | ||
c906108c | 687 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
688 | using mode MODE in the calls to open. You cannot use this function to |
689 | create files (O_CREAT). | |
c906108c | 690 | |
014d698b EZ |
691 | OPTS specifies the function behaviour in specific cases. |
692 | ||
693 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 694 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
695 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
696 | disables searching of the path (this is so that "exec-file ./foo" or | |
697 | "symbol-file ./foo" insures that you get that particular version of | |
698 | foo or an error message). | |
c906108c | 699 | |
014d698b EZ |
700 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
701 | searched in path (we usually want this for source files but not for | |
702 | executables). | |
703 | ||
e7a8479f | 704 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 705 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
706 | have to take special pains to avoid doubling the "/" between the directory |
707 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
708 | source file name!!! | |
709 | ||
492c0ab7 JK |
710 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
711 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
712 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
713 | effect. | |
1f0c4988 | 714 | |
c906108c SS |
715 | If a file is found, return the descriptor. |
716 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
717 | ||
718 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 719 | >>>> eg executable, non-directory. */ |
c906108c | 720 | int |
24b9144d | 721 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 722 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 723 | { |
52f0bd74 AC |
724 | int fd; |
725 | char *filename; | |
c906108c | 726 | int alloclen; |
79b289e2 PA |
727 | /* The errno set for the last name we tried to open (and |
728 | failed). */ | |
729 | int last_errno = 0; | |
e80aaf61 | 730 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 731 | |
fbdebf46 JK |
732 | /* The open syscall MODE parameter is not specified. */ |
733 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
734 | gdb_assert (string != NULL); |
735 | ||
736 | /* A file with an empty name cannot possibly exist. Report a failure | |
737 | without further checking. | |
738 | ||
739 | This is an optimization which also defends us against buggy | |
740 | implementations of the "stat" function. For instance, we have | |
741 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
742 | when the debugger is started with an empty argument. */ | |
743 | if (string[0] == '\0') | |
744 | { | |
745 | errno = ENOENT; | |
746 | return -1; | |
747 | } | |
fbdebf46 | 748 | |
c906108c SS |
749 | if (!path) |
750 | path = "."; | |
751 | ||
c906108c | 752 | mode |= O_BINARY; |
c906108c | 753 | |
014d698b | 754 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 755 | { |
a55411b9 | 756 | int i, reg_file_errno; |
072b1022 | 757 | |
a55411b9 | 758 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 759 | { |
224c3ddb | 760 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 761 | strcpy (filename, string); |
614c279d | 762 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
763 | if (fd >= 0) |
764 | goto done; | |
a55411b9 | 765 | last_errno = errno; |
072b1022 DJ |
766 | } |
767 | else | |
3f565f1e DJ |
768 | { |
769 | filename = NULL; | |
770 | fd = -1; | |
a55411b9 | 771 | last_errno = reg_file_errno; |
3f565f1e | 772 | } |
072b1022 | 773 | |
014d698b EZ |
774 | if (!(opts & OPF_SEARCH_IN_PATH)) |
775 | for (i = 0; string[i]; i++) | |
776 | if (IS_DIR_SEPARATOR (string[i])) | |
777 | goto done; | |
c906108c SS |
778 | } |
779 | ||
f1b620e9 MG |
780 | /* Remove characters from the start of PATH that we don't need when PATH |
781 | is appended to a directory name. */ | |
782 | string = prepare_path_for_appending (string); | |
c906108c SS |
783 | |
784 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 785 | filename = (char *) alloca (alloclen); |
c906108c | 786 | fd = -1; |
79b289e2 | 787 | last_errno = ENOENT; |
e4ab2fad JK |
788 | |
789 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 790 | |
e80aaf61 | 791 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 792 | { |
e80aaf61 | 793 | char *dir = dir_up.get (); |
e4ab2fad | 794 | size_t len = strlen (dir); |
a55411b9 | 795 | int reg_file_errno; |
c906108c | 796 | |
e4ab2fad | 797 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
798 | { |
799 | /* Name is $cwd -- insert current directory name instead. */ | |
800 | int newlen; | |
801 | ||
c378eb4e | 802 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
803 | len = strlen (current_directory); |
804 | newlen = len + strlen (string) + 2; | |
805 | if (newlen > alloclen) | |
806 | { | |
807 | alloclen = newlen; | |
224c3ddb | 808 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
809 | } |
810 | strcpy (filename, current_directory); | |
811 | } | |
ebd86fb5 TJB |
812 | else if (strchr(dir, '~')) |
813 | { | |
814 | /* See whether we need to expand the tilde. */ | |
815 | int newlen; | |
ebd86fb5 | 816 | |
ee0c3293 | 817 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
818 | |
819 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 820 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
821 | newlen = len + strlen (string) + 2; |
822 | if (newlen > alloclen) | |
823 | { | |
824 | alloclen = newlen; | |
224c3ddb | 825 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 826 | } |
ee0c3293 | 827 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 828 | } |
c5aa993b JM |
829 | else |
830 | { | |
831 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 832 | strcpy (filename, dir); |
08001717 DE |
833 | |
834 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
835 | don't have enough information to expand it. The user *could* | |
836 | have an actual directory named '$cdir' but handling that would | |
837 | be confusing, it would mean different things in different | |
838 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
839 | We can get $cdir when loading scripts. When loading source files | |
840 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 841 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 842 | continue; |
c906108c | 843 | } |
c906108c | 844 | |
c378eb4e | 845 | /* Remove trailing slashes. */ |
fe4e3eb8 | 846 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
847 | filename[--len] = 0; |
848 | ||
c5aa993b | 849 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
850 | strcat (filename, string); |
851 | ||
a55411b9 | 852 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 853 | { |
614c279d | 854 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
855 | if (fd >= 0) |
856 | break; | |
79b289e2 | 857 | last_errno = errno; |
5e987968 | 858 | } |
a55411b9 DE |
859 | else |
860 | last_errno = reg_file_errno; | |
c906108c SS |
861 | } |
862 | ||
c5aa993b | 863 | done: |
c906108c SS |
864 | if (filename_opened) |
865 | { | |
f5b95b50 | 866 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 867 | if (fd < 0) |
e0cc99a6 | 868 | filename_opened->reset (NULL); |
04affae3 | 869 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 870 | *filename_opened = gdb_realpath (filename); |
c906108c | 871 | else |
e0cc99a6 | 872 | *filename_opened = gdb_abspath (filename); |
c906108c | 873 | } |
c906108c | 874 | |
79b289e2 | 875 | errno = last_errno; |
c906108c SS |
876 | return fd; |
877 | } | |
878 | ||
c5aa993b | 879 | |
c906108c SS |
880 | /* This is essentially a convenience, for clients that want the behaviour |
881 | of openp, using source_path, but that really don't want the file to be | |
882 | opened but want instead just to know what the full pathname is (as | |
883 | qualified against source_path). | |
884 | ||
885 | The current working directory is searched first. | |
886 | ||
887 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
888 | set to the fully-qualified pathname. | |
889 | ||
5e987968 | 890 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 891 | int |
e0cc99a6 TT |
892 | source_full_path_of (const char *filename, |
893 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 894 | { |
c5aa993b | 895 | int fd; |
c906108c | 896 | |
492c0ab7 JK |
897 | fd = openp (source_path, |
898 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
899 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
900 | if (fd < 0) |
901 | { | |
e0cc99a6 | 902 | full_pathname->reset (NULL); |
c906108c SS |
903 | return 0; |
904 | } | |
905 | ||
906 | close (fd); | |
907 | return 1; | |
908 | } | |
909 | ||
2f61ca93 JB |
910 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
911 | applied to PATH. */ | |
912 | ||
913 | static int | |
914 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
915 | const char *path) | |
916 | { | |
917 | const int from_len = strlen (rule->from); | |
918 | const int path_len = strlen (path); | |
2f61ca93 JB |
919 | |
920 | if (path_len < from_len) | |
921 | return 0; | |
922 | ||
923 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 924 | so the path should start with rule->from. */ |
2f61ca93 | 925 | |
486ef3b9 | 926 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
927 | return 0; |
928 | ||
929 | /* Make sure that the region in the path that matches the substitution | |
930 | rule is immediately followed by a directory separator (or the end of | |
931 | string character). */ | |
230cd560 | 932 | |
2f61ca93 JB |
933 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
934 | return 0; | |
935 | ||
936 | return 1; | |
937 | } | |
938 | ||
939 | /* Find the substitute-path rule that applies to PATH and return it. | |
940 | Return NULL if no rule applies. */ | |
941 | ||
942 | static struct substitute_path_rule * | |
943 | get_substitute_path_rule (const char *path) | |
944 | { | |
945 | struct substitute_path_rule *rule = substitute_path_rules; | |
946 | ||
947 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
948 | rule = rule->next; | |
949 | ||
950 | return rule; | |
951 | } | |
952 | ||
953 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
954 | to PATH, then apply it and return the new path. |
955 | ||
2f61ca93 JB |
956 | Return NULL if no substitution rule was specified by the user, |
957 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
958 | |
959 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
960 | rewrite_source_path (const char *path) |
961 | { | |
962 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
963 | char *new_path; | |
964 | int from_len; | |
965 | ||
966 | if (rule == NULL) | |
967 | return NULL; | |
968 | ||
969 | from_len = strlen (rule->from); | |
970 | ||
971 | /* Compute the rewritten path and return it. */ | |
972 | ||
973 | new_path = | |
974 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
975 | strcpy (new_path, rule->to); | |
976 | strcat (new_path, path + from_len); | |
977 | ||
0b581c69 | 978 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
979 | } |
980 | ||
2179fbc3 TT |
981 | /* See source.h. */ |
982 | ||
983 | scoped_fd | |
e2357892 | 984 | find_and_open_source (const char *filename, |
5e987968 | 985 | const char *dirname, |
e0cc99a6 | 986 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
987 | { |
988 | char *path = source_path; | |
31889e00 | 989 | const char *p; |
c906108c | 990 | int result; |
c906108c | 991 | |
c378eb4e | 992 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 993 | |
57c22c6c | 994 | if (*fullname) |
c906108c | 995 | { |
2f61ca93 JB |
996 | /* The user may have requested that source paths be rewritten |
997 | according to substitution rules he provided. If a substitution | |
998 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
999 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
1000 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
1001 | |
1002 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 1003 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 1004 | |
e0cc99a6 | 1005 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 1006 | if (result >= 0) |
bc3aa6c3 | 1007 | { |
a0c1ffed TT |
1008 | if (basenames_may_differ) |
1009 | *fullname = gdb_realpath (fullname->get ()); | |
1010 | else | |
1011 | *fullname = gdb_abspath (fullname->get ()); | |
2179fbc3 | 1012 | return scoped_fd (result); |
bc3aa6c3 DE |
1013 | } |
1014 | ||
c378eb4e | 1015 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1016 | fullname->reset (NULL); |
c906108c SS |
1017 | } |
1018 | ||
0b581c69 | 1019 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1020 | if (dirname != NULL) |
c906108c | 1021 | { |
2f61ca93 JB |
1022 | /* If necessary, rewrite the compilation directory name according |
1023 | to the source path substitution rules specified by the user. */ | |
1024 | ||
0b581c69 | 1025 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1026 | |
1027 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1028 | dirname = rewritten_dirname.get (); |
1029 | ||
c378eb4e MS |
1030 | /* Replace a path entry of $cdir with the compilation directory |
1031 | name. */ | |
c906108c | 1032 | #define cdir_len 5 |
33d0e35a | 1033 | p = strstr (source_path, "$cdir"); |
c906108c | 1034 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1035 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1036 | { |
1037 | int len; | |
1038 | ||
1039 | path = (char *) | |
57c22c6c | 1040 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1041 | len = p - source_path; |
c5aa993b | 1042 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1043 | strcpy (path + len, dirname); /* new stuff */ |
1044 | strcat (path + len, source_path + len + cdir_len); /* After | |
1045 | $cdir */ | |
c906108c SS |
1046 | } |
1047 | } | |
8da2a1df | 1048 | |
4fa0265e РИ |
1049 | gdb::unique_xmalloc_ptr<char> rewritten_filename |
1050 | = rewrite_source_path (filename); | |
56163ce1 | 1051 | |
4fa0265e РИ |
1052 | if (rewritten_filename != NULL) |
1053 | filename = rewritten_filename.get (); | |
c906108c | 1054 | |
a0c1ffed TT |
1055 | openp_flags flags = OPF_SEARCH_IN_PATH; |
1056 | if (basenames_may_differ) | |
1057 | flags |= OPF_RETURN_REALPATH; | |
f1b620e9 MG |
1058 | |
1059 | /* Try to locate file using filename. */ | |
a0c1ffed | 1060 | result = openp (path, flags, filename, OPEN_MODE, fullname); |
f1b620e9 MG |
1061 | if (result < 0 && dirname != NULL) |
1062 | { | |
1063 | /* Remove characters from the start of PATH that we don't need when | |
1064 | PATH is appended to a directory name. */ | |
1065 | const char *filename_start = prepare_path_for_appending (filename); | |
1066 | ||
1067 | /* Try to locate file using compilation dir + filename. This is | |
1068 | helpful if part of the compilation directory was removed, | |
1069 | e.g. using gcc's -fdebug-prefix-map, and we have added the missing | |
1070 | prefix to source_path. */ | |
1071 | std::string cdir_filename (dirname); | |
1072 | ||
1073 | /* Remove any trailing directory separators. */ | |
1074 | while (IS_DIR_SEPARATOR (cdir_filename.back ())) | |
1075 | cdir_filename.pop_back (); | |
1076 | ||
1077 | /* Add our own directory separator. */ | |
1078 | cdir_filename.append (SLASH_STRING); | |
1079 | cdir_filename.append (filename_start); | |
1080 | ||
1081 | result = openp (path, flags, cdir_filename.c_str (), OPEN_MODE, | |
1082 | fullname); | |
1083 | } | |
c906108c SS |
1084 | if (result < 0) |
1085 | { | |
c378eb4e | 1086 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1087 | p = lbasename (filename); |
1088 | if (p != filename) | |
a0c1ffed | 1089 | result = openp (path, flags, p, OPEN_MODE, fullname); |
c906108c | 1090 | } |
c906108c | 1091 | |
2179fbc3 | 1092 | return scoped_fd (result); |
c906108c SS |
1093 | } |
1094 | ||
57c22c6c BR |
1095 | /* Open a source file given a symtab S. Returns a file descriptor or |
1096 | negative number for error. | |
1097 | ||
c378eb4e | 1098 | This function is a convience function to find_and_open_source. */ |
57c22c6c | 1099 | |
2179fbc3 | 1100 | scoped_fd |
57c22c6c BR |
1101 | open_source_file (struct symtab *s) |
1102 | { | |
5e987968 | 1103 | if (!s) |
2179fbc3 | 1104 | return scoped_fd (-1); |
57c22c6c | 1105 | |
54460946 | 1106 | gdb::unique_xmalloc_ptr<char> fullname (s->fullname); |
8e6a5953 | 1107 | s->fullname = NULL; |
2179fbc3 TT |
1108 | scoped_fd fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), |
1109 | &fullname); | |
e0cc99a6 TT |
1110 | s->fullname = fullname.release (); |
1111 | return fd; | |
57c22c6c BR |
1112 | } |
1113 | ||
1114 | /* Finds the fullname that a symtab represents. | |
c906108c | 1115 | |
f35a17b5 JK |
1116 | This functions finds the fullname and saves it in s->fullname. |
1117 | It will also return the value. | |
57c22c6c BR |
1118 | |
1119 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1120 | the expected fullname is used. Therefore the files does not have to |
1121 | exist. */ | |
256f06f3 | 1122 | |
0b0865da | 1123 | const char * |
57c22c6c | 1124 | symtab_to_fullname (struct symtab *s) |
c906108c | 1125 | { |
256f06f3 DE |
1126 | /* Use cached copy if we have it. |
1127 | We rely on forget_cached_source_info being called appropriately | |
1128 | to handle cases like the file being moved. */ | |
f35a17b5 | 1129 | if (s->fullname == NULL) |
5e987968 | 1130 | { |
2179fbc3 | 1131 | scoped_fd fd = open_source_file (s); |
f35a17b5 | 1132 | |
2179fbc3 | 1133 | if (fd.get () < 0) |
f0a4b570 | 1134 | { |
0b581c69 | 1135 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1136 | |
1137 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1138 | should report the pathname where GDB tried to find the file. */ | |
1139 | ||
ee6f8984 | 1140 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1141 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1142 | else |
0b581c69 TT |
1143 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1144 | s->filename, (char *) NULL)); | |
f0a4b570 | 1145 | |
0b581c69 | 1146 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1147 | if (s->fullname == NULL) |
0b581c69 | 1148 | s->fullname = fullname.release (); |
f0a4b570 | 1149 | } |
f35a17b5 | 1150 | } |
c906108c | 1151 | |
f35a17b5 | 1152 | return s->fullname; |
57c22c6c | 1153 | } |
1b56eb55 JK |
1154 | |
1155 | /* See commentary in source.h. */ | |
1156 | ||
1157 | const char * | |
1158 | symtab_to_filename_for_display (struct symtab *symtab) | |
1159 | { | |
1160 | if (filename_display_string == filename_display_basename) | |
1161 | return lbasename (symtab->filename); | |
1162 | else if (filename_display_string == filename_display_absolute) | |
1163 | return symtab_to_fullname (symtab); | |
1164 | else if (filename_display_string == filename_display_relative) | |
1165 | return symtab->filename; | |
1166 | else | |
1167 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1168 | } | |
c906108c | 1169 | |
00df30ae AB |
1170 | \f |
1171 | ||
c906108c | 1172 | /* Print source lines from the file of symtab S, |
c378eb4e | 1173 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1174 | |
1175 | static void | |
dfaae886 | 1176 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1177 | print_source_lines_flags flags) |
c906108c | 1178 | { |
b08b16c8 | 1179 | bool noprint = false; |
c906108c | 1180 | int nlines = stopline - line; |
79a45e25 | 1181 | struct ui_out *uiout = current_uiout; |
c906108c | 1182 | |
c378eb4e | 1183 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1184 | current_source_symtab = s; |
1185 | current_source_line = line; | |
1186 | first_line_listed = line; | |
1187 | ||
3e43a32a | 1188 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1189 | number. */ |
112e8700 | 1190 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1191 | { |
c378eb4e | 1192 | /* Only prints "No such file or directory" once. */ |
b08b16c8 | 1193 | if (s == last_source_visited) |
c5aa993b | 1194 | { |
b08b16c8 | 1195 | if (last_source_error) |
2179fbc3 | 1196 | { |
b08b16c8 TT |
1197 | flags |= PRINT_SOURCE_LINES_NOERROR; |
1198 | noprint = true; | |
2179fbc3 | 1199 | } |
c5aa993b JM |
1200 | } |
1201 | else | |
1202 | { | |
b08b16c8 TT |
1203 | last_source_visited = s; |
1204 | scoped_fd desc = open_source_file (s); | |
1205 | last_source_error = desc.get () < 0; | |
1206 | if (last_source_error) | |
1207 | noprint = true; | |
c5aa993b | 1208 | } |
8b93c638 JM |
1209 | } |
1210 | else | |
1211 | { | |
8d297bbf | 1212 | flags |= PRINT_SOURCE_LINES_NOERROR; |
b08b16c8 | 1213 | noprint = true; |
8b93c638 | 1214 | } |
c906108c | 1215 | |
2179fbc3 | 1216 | if (noprint) |
c906108c | 1217 | { |
dfaae886 | 1218 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1219 | { |
05cba821 JK |
1220 | const char *filename = symtab_to_filename_for_display (s); |
1221 | int len = strlen (filename) + 100; | |
224c3ddb | 1222 | char *name = (char *) alloca (len); |
08850b56 | 1223 | |
05cba821 | 1224 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1225 | print_sys_errmsg (name, errno); |
1226 | } | |
1227 | else | |
fc0ae648 | 1228 | { |
381befee | 1229 | uiout->field_signed ("line", line); |
112e8700 | 1230 | uiout->text ("\tin "); |
56d397a3 | 1231 | |
23eb71e4 JK |
1232 | /* CLI expects only the "file" field. TUI expects only the |
1233 | "fullname" field (and TUI does break if "file" is printed). | |
1234 | MI expects both fields. ui_source_list is set only for CLI, | |
1235 | not for TUI. */ | |
112e8700 | 1236 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
cbe56571 TT |
1237 | uiout->field_string ("file", symtab_to_filename_for_display (s), |
1238 | ui_out_style_kind::FILE); | |
112e8700 | 1239 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) |
8f1b8b82 JK |
1240 | { |
1241 | const char *s_fullname = symtab_to_fullname (s); | |
1242 | char *local_fullname; | |
1243 | ||
1244 | /* ui_out_field_string may free S_FULLNAME by calling | |
1245 | open_source_file for it again. See e.g., | |
1246 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1247 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1248 | strcpy (local_fullname, s_fullname); |
1249 | ||
112e8700 | 1250 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1251 | } |
23eb71e4 | 1252 | |
112e8700 | 1253 | uiout->text ("\n"); |
fc0ae648 | 1254 | } |
c906108c SS |
1255 | |
1256 | return; | |
1257 | } | |
1258 | ||
ec98a4ad | 1259 | /* If the user requested a sequence of lines that seems to go backward |
0e2a2133 AB |
1260 | (from high to low line numbers) then we don't print anything. */ |
1261 | if (stopline <= line) | |
ec98a4ad AB |
1262 | return; |
1263 | ||
62f29fda TT |
1264 | std::string lines; |
1265 | if (!g_source_cache.get_source_lines (s, line, stopline - 1, &lines)) | |
cb44333d TT |
1266 | { |
1267 | const std::vector<off_t> *offsets = nullptr; | |
1268 | g_source_cache.get_line_charpos (s, &offsets); | |
1269 | error (_("Line number %d out of range; %s has %d lines."), | |
1270 | line, symtab_to_filename_for_display (s), | |
1271 | offsets == nullptr ? 0 : (int) offsets->size ()); | |
1272 | } | |
c906108c | 1273 | |
62f29fda | 1274 | const char *iter = lines.c_str (); |
a0087920 | 1275 | while (nlines-- > 0 && *iter != '\0') |
c906108c | 1276 | { |
8b93c638 JM |
1277 | char buf[20]; |
1278 | ||
8b93c638 | 1279 | last_line_listed = current_source_line; |
4cd29721 MM |
1280 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1281 | { | |
112e8700 SM |
1282 | uiout->text (symtab_to_filename_for_display (s)); |
1283 | uiout->text (":"); | |
4cd29721 | 1284 | } |
08850b56 | 1285 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
112e8700 | 1286 | uiout->text (buf); |
a0087920 TT |
1287 | |
1288 | while (*iter != '\0') | |
8b93c638 | 1289 | { |
a0087920 TT |
1290 | /* Find a run of characters that can be emitted at once. |
1291 | This is done so that escape sequences are kept | |
1292 | together. */ | |
1293 | const char *start = iter; | |
1294 | while (true) | |
8b93c638 | 1295 | { |
a0087920 TT |
1296 | int skip_bytes; |
1297 | ||
1298 | char c = *iter; | |
1299 | if (c == '\033' && skip_ansi_escape (iter, &skip_bytes)) | |
1300 | iter += skip_bytes; | |
62160ec9 | 1301 | else if (c >= 0 && c < 040 && c != '\t') |
a0087920 TT |
1302 | break; |
1303 | else if (c == 0177) | |
1304 | break; | |
1305 | else | |
1306 | ++iter; | |
8b93c638 | 1307 | } |
a0087920 | 1308 | if (iter > start) |
8b93c638 | 1309 | { |
a0087920 TT |
1310 | std::string text (start, iter); |
1311 | uiout->text (text.c_str ()); | |
8b93c638 | 1312 | } |
a0087920 TT |
1313 | if (*iter == '\r') |
1314 | { | |
1315 | /* Treat either \r or \r\n as a single newline. */ | |
1316 | ++iter; | |
1317 | if (*iter == '\n') | |
1318 | ++iter; | |
1319 | break; | |
1320 | } | |
1321 | else if (*iter == '\n') | |
1322 | { | |
1323 | ++iter; | |
1324 | break; | |
1325 | } | |
1326 | else if (*iter > 0 && *iter < 040) | |
8b93c638 | 1327 | { |
a0087920 | 1328 | xsnprintf (buf, sizeof (buf), "^%c", *iter + 0100); |
112e8700 | 1329 | uiout->text (buf); |
62160ec9 | 1330 | ++iter; |
8b93c638 | 1331 | } |
a0087920 | 1332 | else if (*iter == 0177) |
62160ec9 TT |
1333 | { |
1334 | uiout->text ("^?"); | |
1335 | ++iter; | |
1336 | } | |
8b93c638 | 1337 | } |
a0087920 | 1338 | uiout->text ("\n"); |
c906108c | 1339 | } |
c906108c SS |
1340 | } |
1341 | \f | |
583068ca AB |
1342 | |
1343 | /* See source.h. */ | |
c906108c | 1344 | |
c5aa993b | 1345 | void |
dfaae886 | 1346 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1347 | print_source_lines_flags flags) |
c906108c | 1348 | { |
dfaae886 | 1349 | print_source_lines_base (s, line, stopline, flags); |
c906108c | 1350 | } |
0e2a2133 AB |
1351 | |
1352 | /* See source.h. */ | |
1353 | ||
1354 | void | |
1355 | print_source_lines (struct symtab *s, source_lines_range line_range, | |
1356 | print_source_lines_flags flags) | |
1357 | { | |
1358 | print_source_lines_base (s, line_range.startline (), | |
1359 | line_range.stopline (), flags); | |
1360 | } | |
1361 | ||
1362 | ||
c906108c | 1363 | \f |
c906108c SS |
1364 | /* Print info on range of pc's in a specified line. */ |
1365 | ||
1366 | static void | |
1d12d88f | 1367 | info_line_command (const char *arg, int from_tty) |
c906108c | 1368 | { |
c906108c | 1369 | CORE_ADDR start_pc, end_pc; |
c906108c | 1370 | |
6c5b2ebe PA |
1371 | std::vector<symtab_and_line> decoded_sals; |
1372 | symtab_and_line curr_sal; | |
1373 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1374 | |
1375 | if (arg == 0) | |
1376 | { | |
6c5b2ebe PA |
1377 | curr_sal.symtab = current_source_symtab; |
1378 | curr_sal.pspace = current_program_space; | |
5166082f | 1379 | if (last_line_listed != 0) |
6c5b2ebe | 1380 | curr_sal.line = last_line_listed; |
5166082f | 1381 | else |
6c5b2ebe | 1382 | curr_sal.line = current_source_line; |
5166082f | 1383 | |
6c5b2ebe | 1384 | sals = curr_sal; |
c906108c SS |
1385 | } |
1386 | else | |
1387 | { | |
6c5b2ebe PA |
1388 | decoded_sals = decode_line_with_last_displayed (arg, |
1389 | DECODE_LINE_LIST_MODE); | |
1390 | sals = decoded_sals; | |
c5aa993b | 1391 | |
c906108c SS |
1392 | dont_repeat (); |
1393 | } | |
1394 | ||
1395 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1396 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1397 | for (const auto &sal : sals) |
c906108c | 1398 | { |
f8eba3c6 TT |
1399 | if (sal.pspace != current_program_space) |
1400 | continue; | |
c5aa993b | 1401 | |
c906108c SS |
1402 | if (sal.symtab == 0) |
1403 | { | |
5af949e3 UW |
1404 | struct gdbarch *gdbarch = get_current_arch (); |
1405 | ||
a3f17187 | 1406 | printf_filtered (_("No line number information available")); |
c906108c SS |
1407 | if (sal.pc != 0) |
1408 | { | |
1409 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1410 | user about a source line, at least let them have the symbolic |
1411 | address. */ | |
c906108c SS |
1412 | printf_filtered (" for address "); |
1413 | wrap_here (" "); | |
5af949e3 | 1414 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1415 | } |
1416 | else | |
1417 | printf_filtered ("."); | |
1418 | printf_filtered ("\n"); | |
1419 | } | |
1420 | else if (sal.line > 0 | |
1421 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1422 | { | |
eb822aa6 DE |
1423 | struct gdbarch *gdbarch |
1424 | = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); | |
5af949e3 | 1425 | |
c906108c SS |
1426 | if (start_pc == end_pc) |
1427 | { | |
1428 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1429 | sal.line, |
1430 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1431 | wrap_here (" "); |
1432 | printf_filtered (" is at address "); | |
5af949e3 | 1433 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1434 | wrap_here (" "); |
1435 | printf_filtered (" but contains no code.\n"); | |
1436 | } | |
1437 | else | |
1438 | { | |
1439 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1440 | sal.line, |
1441 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1442 | wrap_here (" "); |
1443 | printf_filtered (" starts at address "); | |
5af949e3 | 1444 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1445 | wrap_here (" "); |
1446 | printf_filtered (" and ends at "); | |
5af949e3 | 1447 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1448 | printf_filtered (".\n"); |
1449 | } | |
1450 | ||
1451 | /* x/i should display this line's code. */ | |
5af949e3 | 1452 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1453 | |
1454 | /* Repeating "info line" should do the following line. */ | |
1455 | last_line_listed = sal.line + 1; | |
1456 | ||
1457 | /* If this is the only line, show the source code. If it could | |
1458 | not find the file, don't do anything special. */ | |
0d3abd8c AB |
1459 | if (sals.size () == 1) |
1460 | annotate_source_line (sal.symtab, sal.line, 0, start_pc); | |
c906108c SS |
1461 | } |
1462 | else | |
1463 | /* Is there any case in which we get here, and have an address | |
1464 | which the user would want to see? If we have debugging symbols | |
1465 | and no line numbers? */ | |
a3f17187 | 1466 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1467 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1468 | } |
c906108c SS |
1469 | } |
1470 | \f | |
1471 | /* Commands to search the source file for a regexp. */ | |
1472 | ||
73e8dc90 PA |
1473 | /* Helper for forward_search_command/reverse_search_command. FORWARD |
1474 | indicates direction: true for forward, false for | |
1475 | backward/reverse. */ | |
1476 | ||
c906108c | 1477 | static void |
73e8dc90 | 1478 | search_command_helper (const char *regex, int from_tty, bool forward) |
c906108c | 1479 | { |
73e8dc90 | 1480 | const char *msg = re_comp (regex); |
c906108c | 1481 | if (msg) |
8a3fe4f8 | 1482 | error (("%s"), msg); |
c906108c SS |
1483 | |
1484 | if (current_source_symtab == 0) | |
1485 | select_source_symtab (0); | |
1486 | ||
cb44333d | 1487 | scoped_fd desc (open_source_file (current_source_symtab)); |
77ad7394 | 1488 | if (desc.get () < 0) |
05cba821 | 1489 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1490 | |
73e8dc90 PA |
1491 | int line = (forward |
1492 | ? last_line_listed + 1 | |
1493 | : last_line_listed - 1); | |
1494 | ||
cb44333d TT |
1495 | const std::vector<off_t> *offsets; |
1496 | if (line < 1 | |
1497 | || !g_source_cache.get_line_charpos (current_source_symtab, &offsets) | |
1498 | || line > offsets->size ()) | |
9fe4a216 | 1499 | error (_("Expression not found")); |
c906108c | 1500 | |
cb44333d | 1501 | if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0) |
05cba821 | 1502 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1503 | |
2179fbc3 | 1504 | gdb_file_up stream = desc.to_file (FDOPEN_MODE); |
4a45905b | 1505 | clearerr (stream.get ()); |
73e8dc90 PA |
1506 | |
1507 | gdb::def_vector<char> buf; | |
1508 | buf.reserve (256); | |
1509 | ||
c5aa993b JM |
1510 | while (1) |
1511 | { | |
73e8dc90 | 1512 | buf.resize (0); |
c5aa993b | 1513 | |
73e8dc90 | 1514 | int c = fgetc (stream.get ()); |
c5aa993b JM |
1515 | if (c == EOF) |
1516 | break; | |
1517 | do | |
c906108c | 1518 | { |
73e8dc90 | 1519 | buf.push_back (c); |
c906108c | 1520 | } |
4a45905b | 1521 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1522 | |
7be570e7 JM |
1523 | /* Remove the \r, if any, at the end of the line, otherwise |
1524 | regular expressions that end with $ or \n won't work. */ | |
73e8dc90 PA |
1525 | size_t sz = buf.size (); |
1526 | if (sz >= 2 && buf[sz - 2] == '\r') | |
7be570e7 | 1527 | { |
73e8dc90 PA |
1528 | buf[sz - 2] = '\n'; |
1529 | buf.resize (sz - 1); | |
7be570e7 | 1530 | } |
7be570e7 | 1531 | |
c378eb4e | 1532 | /* We now have a source line in buf, null terminate and match. */ |
73e8dc90 PA |
1533 | buf.push_back ('\0'); |
1534 | if (re_exec (buf.data ()) > 0) | |
c5aa993b | 1535 | { |
c378eb4e | 1536 | /* Match! */ |
c5aa993b | 1537 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1538 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1539 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c5aa993b JM |
1540 | return; |
1541 | } | |
73e8dc90 PA |
1542 | |
1543 | if (forward) | |
1544 | line++; | |
1545 | else | |
1546 | { | |
1547 | line--; | |
b18ca514 PW |
1548 | if (line < 1) |
1549 | break; | |
cb44333d | 1550 | if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0) |
73e8dc90 PA |
1551 | { |
1552 | const char *filename | |
1553 | = symtab_to_filename_for_display (current_source_symtab); | |
1554 | perror_with_name (filename); | |
1555 | } | |
1556 | } | |
c5aa993b | 1557 | } |
c906108c | 1558 | |
a3f17187 | 1559 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1560 | } |
1561 | ||
c906108c | 1562 | static void |
73e8dc90 | 1563 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1564 | { |
73e8dc90 PA |
1565 | search_command_helper (regex, from_tty, true); |
1566 | } | |
c906108c | 1567 | |
73e8dc90 PA |
1568 | static void |
1569 | reverse_search_command (const char *regex, int from_tty) | |
1570 | { | |
1571 | search_command_helper (regex, from_tty, false); | |
c906108c | 1572 | } |
2f61ca93 JB |
1573 | |
1574 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1575 | ||
1576 | static void | |
1577 | strip_trailing_directory_separator (char *path) | |
1578 | { | |
1579 | const int last = strlen (path) - 1; | |
1580 | ||
1581 | if (last < 0) | |
1582 | return; /* No stripping is needed if PATH is the empty string. */ | |
1583 | ||
1584 | if (IS_DIR_SEPARATOR (path[last])) | |
1585 | path[last] = '\0'; | |
1586 | } | |
1587 | ||
1588 | /* Return the path substitution rule that matches FROM. | |
1589 | Return NULL if no rule matches. */ | |
1590 | ||
1591 | static struct substitute_path_rule * | |
1592 | find_substitute_path_rule (const char *from) | |
1593 | { | |
1594 | struct substitute_path_rule *rule = substitute_path_rules; | |
1595 | ||
1596 | while (rule != NULL) | |
1597 | { | |
1598 | if (FILENAME_CMP (rule->from, from) == 0) | |
1599 | return rule; | |
1600 | rule = rule->next; | |
1601 | } | |
1602 | ||
1603 | return NULL; | |
1604 | } | |
1605 | ||
1606 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1607 | The new rule will replace FROM into TO. */ | |
1608 | ||
29b0e8a2 | 1609 | void |
2f61ca93 JB |
1610 | add_substitute_path_rule (char *from, char *to) |
1611 | { | |
1612 | struct substitute_path_rule *rule; | |
8d749320 | 1613 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1614 | |
2f61ca93 JB |
1615 | new_rule->from = xstrdup (from); |
1616 | new_rule->to = xstrdup (to); | |
1617 | new_rule->next = NULL; | |
1618 | ||
1619 | /* If the list of rules are empty, then insert the new rule | |
1620 | at the head of the list. */ | |
1621 | ||
1622 | if (substitute_path_rules == NULL) | |
1623 | { | |
1624 | substitute_path_rules = new_rule; | |
1625 | return; | |
1626 | } | |
1627 | ||
1628 | /* Otherwise, skip to the last rule in our list and then append | |
1629 | the new rule. */ | |
1630 | ||
1631 | rule = substitute_path_rules; | |
1632 | while (rule->next != NULL) | |
1633 | rule = rule->next; | |
1634 | ||
1635 | rule->next = new_rule; | |
1636 | } | |
1637 | ||
1638 | /* Remove the given source path substitution rule from the current list | |
1639 | of rules. The memory allocated for that rule is also deallocated. */ | |
1640 | ||
1641 | static void | |
1642 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1643 | { | |
1644 | if (rule == substitute_path_rules) | |
1645 | substitute_path_rules = rule->next; | |
1646 | else | |
1647 | { | |
1648 | struct substitute_path_rule *prev = substitute_path_rules; | |
1649 | ||
1650 | while (prev != NULL && prev->next != rule) | |
1651 | prev = prev->next; | |
1652 | ||
1653 | gdb_assert (prev != NULL); | |
1654 | ||
1655 | prev->next = rule->next; | |
1656 | } | |
1657 | ||
1658 | xfree (rule->from); | |
1659 | xfree (rule->to); | |
1660 | xfree (rule); | |
1661 | } | |
1662 | ||
1663 | /* Implement the "show substitute-path" command. */ | |
1664 | ||
1665 | static void | |
a0d65762 | 1666 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1667 | { |
1668 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1669 | char *from = NULL; |
1670 | ||
773a1edc | 1671 | gdb_argv argv (args); |
2f61ca93 JB |
1672 | |
1673 | /* We expect zero or one argument. */ | |
1674 | ||
1675 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1676 | error (_("Too many arguments in command")); | |
1677 | ||
1678 | if (argv != NULL && argv[0] != NULL) | |
1679 | from = argv[0]; | |
1680 | ||
1681 | /* Print the substitution rules. */ | |
1682 | ||
1683 | if (from != NULL) | |
1684 | printf_filtered | |
1685 | (_("Source path substitution rule matching `%s':\n"), from); | |
1686 | else | |
1687 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1688 | ||
1689 | while (rule != NULL) | |
1690 | { | |
1e2ccb61 | 1691 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1692 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1693 | rule = rule->next; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | /* Implement the "unset substitute-path" command. */ | |
1698 | ||
1699 | static void | |
a0d65762 | 1700 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1701 | { |
1702 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1703 | gdb_argv argv (args); |
2f61ca93 JB |
1704 | char *from = NULL; |
1705 | int rule_found = 0; | |
1706 | ||
1707 | /* This function takes either 0 or 1 argument. */ | |
1708 | ||
1709 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1710 | error (_("Incorrect usage, too many arguments in command")); | |
1711 | ||
1712 | if (argv != NULL && argv[0] != NULL) | |
1713 | from = argv[0]; | |
1714 | ||
1715 | /* If the user asked for all the rules to be deleted, ask him | |
1716 | to confirm and give him a chance to abort before the action | |
1717 | is performed. */ | |
1718 | ||
1719 | if (from == NULL | |
1720 | && !query (_("Delete all source path substitution rules? "))) | |
1721 | error (_("Canceled")); | |
1722 | ||
1723 | /* Delete the rule matching the argument. No argument means that | |
1724 | all rules should be deleted. */ | |
1725 | ||
1726 | while (rule != NULL) | |
1727 | { | |
1728 | struct substitute_path_rule *next = rule->next; | |
1729 | ||
1730 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1731 | { | |
1732 | delete_substitute_path_rule (rule); | |
1733 | rule_found = 1; | |
1734 | } | |
1735 | ||
1736 | rule = next; | |
1737 | } | |
1738 | ||
1739 | /* If the user asked for a specific rule to be deleted but | |
1740 | we could not find it, then report an error. */ | |
1741 | ||
1742 | if (from != NULL && !rule_found) | |
1743 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1744 | |
1745 | forget_cached_source_info (); | |
2f61ca93 JB |
1746 | } |
1747 | ||
1748 | /* Add a new source path substitution rule. */ | |
1749 | ||
1750 | static void | |
a0d65762 | 1751 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1752 | { |
2f61ca93 JB |
1753 | struct substitute_path_rule *rule; |
1754 | ||
773a1edc | 1755 | gdb_argv argv (args); |
2f61ca93 JB |
1756 | |
1757 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1758 | error (_("Incorrect usage, too few arguments in command")); | |
1759 | ||
1760 | if (argv[2] != NULL) | |
1761 | error (_("Incorrect usage, too many arguments in command")); | |
1762 | ||
1763 | if (*(argv[0]) == '\0') | |
1764 | error (_("First argument must be at least one character long")); | |
1765 | ||
1766 | /* Strip any trailing directory separator character in either FROM | |
1767 | or TO. The substitution rule already implicitly contains them. */ | |
1768 | strip_trailing_directory_separator (argv[0]); | |
1769 | strip_trailing_directory_separator (argv[1]); | |
1770 | ||
1771 | /* If a rule with the same "from" was previously defined, then | |
1772 | delete it. This new rule replaces it. */ | |
1773 | ||
1774 | rule = find_substitute_path_rule (argv[0]); | |
1775 | if (rule != NULL) | |
1776 | delete_substitute_path_rule (rule); | |
1777 | ||
1778 | /* Insert the new substitution rule. */ | |
1779 | ||
1780 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1781 | forget_cached_source_info (); |
2f61ca93 JB |
1782 | } |
1783 | ||
0e2a2133 AB |
1784 | /* See source.h. */ |
1785 | ||
1786 | source_lines_range::source_lines_range (int startline, | |
1787 | source_lines_range::direction dir) | |
1788 | { | |
1789 | if (dir == source_lines_range::FORWARD) | |
1790 | { | |
1791 | LONGEST end = static_cast <LONGEST> (startline) + get_lines_to_list (); | |
1792 | ||
1793 | if (end > INT_MAX) | |
1794 | end = INT_MAX; | |
1795 | ||
1796 | m_startline = startline; | |
1797 | m_stopline = static_cast <int> (end); | |
1798 | } | |
1799 | else | |
1800 | { | |
1801 | LONGEST start = static_cast <LONGEST> (startline) - get_lines_to_list (); | |
1802 | ||
1803 | if (start < 1) | |
1804 | start = 1; | |
1805 | ||
1806 | m_startline = static_cast <int> (start); | |
1807 | m_stopline = startline; | |
1808 | } | |
1809 | } | |
1810 | ||
c906108c SS |
1811 | \f |
1812 | void | |
fba45db2 | 1813 | _initialize_source (void) |
c906108c SS |
1814 | { |
1815 | struct cmd_list_element *c; | |
433759f7 | 1816 | |
c906108c SS |
1817 | current_source_symtab = 0; |
1818 | init_source_path (); | |
1819 | ||
1820 | /* The intention is to use POSIX Basic Regular Expressions. | |
1821 | Always use the GNU regex routine for consistency across all hosts. | |
1822 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1823 | just an approximation. */ | |
1824 | re_set_syntax (RE_SYNTAX_GREP); | |
1825 | ||
1a966eab AC |
1826 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1827 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1828 | Forget cached info on source file locations and line positions.\n\ |
1829 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1830 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1831 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1832 | &cmdlist); |
1833 | ||
1834 | if (dbx_commands) | |
c5aa993b | 1835 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1836 | |
5ba2abeb | 1837 | set_cmd_completer (c, filename_completer); |
c906108c | 1838 | |
99e7ae30 DE |
1839 | add_setshow_optional_filename_cmd ("directories", |
1840 | class_files, | |
1841 | &source_path, | |
1842 | _("\ | |
1843 | Set the search path for finding source files."), | |
1844 | _("\ | |
1845 | Show the search path for finding source files."), | |
1846 | _("\ | |
c906108c | 1847 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1848 | $cdir in the path means the compilation directory of the source file.\n\ |
1849 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1850 | appending these directories if necessary.\n\ | |
1851 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1852 | set_directories_command, | |
1853 | show_directories_command, | |
1854 | &setlist, &showlist); | |
c906108c | 1855 | |
11db9430 | 1856 | add_info ("source", info_source_command, |
1bedd215 | 1857 | _("Information about the current source file.")); |
c906108c | 1858 | |
11db9430 | 1859 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1860 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1861 | Line can be specified as\n\ |
1862 | LINENUM, to list around that line in current file,\n\ | |
1863 | FILE:LINENUM, to list around that line in that file,\n\ | |
1864 | FUNCTION, to list around beginning of that function,\n\ | |
1865 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1866 | Default is to describe the last source line that was listed.\n\n\ |
1867 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1868 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1869 | The address is also stored as the value of \"$_\".")); |
c906108c | 1870 | |
1bedd215 AC |
1871 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1872 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1873 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1874 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1875 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1876 | |
1bedd215 AC |
1877 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1878 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1879 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1880 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1881 | |
7f7cc265 | 1882 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1883 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1884 | Show number of source lines gdb will list by default."), _("\ |
1885 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1886 | the \"list\" argument explicitly specifies some other number).\n\ | |
1887 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1888 | NULL, |
1889 | show_lines_to_list, | |
1890 | &setlist, &showlist); | |
2f61ca93 JB |
1891 | |
1892 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1893 | _("\ | |
590042fc | 1894 | Add a substitution rule to rewrite the source directories.\n\ |
7ef2b397 | 1895 | Usage: set substitute-path FROM TO\n\ |
590042fc PW |
1896 | The rule is applied only if the directory name starts with FROM\n\ |
1897 | directly followed by a directory separator.\n\ | |
7ef2b397 JB |
1898 | If a substitution rule was previously set for FROM, the old rule\n\ |
1899 | is replaced by the new one."), | |
1900 | &setlist); | |
2f61ca93 JB |
1901 | |
1902 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
1903 | _("\ | |
590042fc | 1904 | Delete one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1905 | Usage: unset substitute-path [FROM]\n\ |
590042fc | 1906 | Delete the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 JB |
1907 | is not specified, all substituting rules are deleted.\n\ |
1908 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
1909 | &unsetlist); |
1910 | ||
1911 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 | 1912 | _("\ |
590042fc | 1913 | Show one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1914 | Usage: show substitute-path [FROM]\n\ |
590042fc | 1915 | Print the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 | 1916 | is not specified, print all substitution rules."), |
2f61ca93 | 1917 | &showlist); |
1b56eb55 JK |
1918 | |
1919 | add_setshow_enum_cmd ("filename-display", class_files, | |
1920 | filename_display_kind_names, | |
1921 | &filename_display_string, _("\ | |
1922 | Set how to display filenames."), _("\ | |
1923 | Show how to display filenames."), _("\ | |
1924 | filename-display can be:\n\ | |
1925 | basename - display only basename of a filename\n\ | |
1926 | relative - display a filename relative to the compilation directory\n\ | |
1927 | absolute - display an absolute filename\n\ | |
1928 | By default, relative filenames are displayed."), | |
1929 | NULL, | |
1930 | show_filename_display_string, | |
1931 | &setlist, &showlist); | |
1932 | ||
c906108c | 1933 | } |