Commit | Line | Data |
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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" | |
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" |
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; | |
132 | static int last_source_error = 0; | |
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 | 241 | struct objfile *ofp; |
c5aa993b | 242 | |
c906108c SS |
243 | if (s) |
244 | { | |
245 | current_source_symtab = s; | |
246 | current_source_line = 1; | |
6c95b8df | 247 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
248 | return; |
249 | } | |
250 | ||
251 | if (current_source_symtab) | |
252 | return; | |
253 | ||
254 | /* Make the default place to list be the function `main' | |
255 | if one exists. */ | |
d12307c1 | 256 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0).symbol) |
c906108c | 257 | { |
6c5b2ebe PA |
258 | std::vector<symtab_and_line> sals |
259 | = decode_line_with_current_source (main_name (), | |
260 | DECODE_LINE_FUNFIRSTLINE); | |
261 | const symtab_and_line &sal = sals[0]; | |
6c95b8df | 262 | current_source_pspace = sal.pspace; |
c906108c | 263 | current_source_symtab = sal.symtab; |
325fac50 | 264 | current_source_line = std::max (sal.line - (lines_to_list - 1), 1); |
c906108c | 265 | if (current_source_symtab) |
c5aa993b | 266 | return; |
c906108c | 267 | } |
c5aa993b | 268 | |
8340a3fb LM |
269 | /* Alright; find the last file in the symtab list (ignoring .h's |
270 | and namespace symtabs). */ | |
c906108c SS |
271 | |
272 | current_source_line = 1; | |
273 | ||
5accd1a0 | 274 | ALL_FILETABS (ofp, cu, symtab) |
c906108c | 275 | { |
5accd1a0 | 276 | const char *name = symtab->filename; |
712a2e6d DE |
277 | int len = strlen (name); |
278 | ||
279 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
280 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
c906108c | 281 | { |
712a2e6d | 282 | current_source_pspace = current_program_space; |
5accd1a0 | 283 | current_source_symtab = symtab; |
c906108c SS |
284 | } |
285 | } | |
6c95b8df | 286 | |
c906108c SS |
287 | if (current_source_symtab) |
288 | return; | |
289 | ||
aed57c53 TT |
290 | for (objfile *objfile : all_objfiles (current_program_space)) |
291 | { | |
292 | if (objfile->sf) | |
293 | s = objfile->sf->qf->find_last_source_symtab (objfile); | |
294 | if (s) | |
295 | current_source_symtab = s; | |
296 | } | |
c906108c SS |
297 | if (current_source_symtab) |
298 | return; | |
299 | ||
8a3fe4f8 | 300 | error (_("Can't find a default source file")); |
c906108c SS |
301 | } |
302 | \f | |
99e7ae30 DE |
303 | /* Handler for "set directories path-list" command. |
304 | "set dir mumble" doesn't prepend paths, it resets the entire | |
305 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
306 | ||
307 | static void | |
eb4c3f4a TT |
308 | set_directories_command (const char *args, |
309 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
310 | { |
311 | /* This is the value that was set. | |
312 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
313 | char *set_path = source_path; | |
314 | ||
315 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
316 | the list by calling init_source_path. If they appear earlier in | |
317 | SET_PATH then mod_path will move them appropriately. | |
318 | mod_path will also remove duplicates. */ | |
319 | init_source_path (); | |
320 | if (*set_path != '\0') | |
321 | mod_path (set_path, &source_path); | |
322 | ||
323 | xfree (set_path); | |
324 | } | |
325 | ||
326 | /* Print the list of source directories. | |
327 | This is used by the "ld" command, so it has the signature of a command | |
328 | function. */ | |
329 | ||
c906108c | 330 | static void |
99e7ae30 | 331 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
332 | { |
333 | puts_filtered ("Source directories searched: "); | |
334 | puts_filtered (source_path); | |
335 | puts_filtered ("\n"); | |
336 | } | |
337 | ||
99e7ae30 DE |
338 | /* Handler for "show directories" command. */ |
339 | ||
340 | static void | |
341 | show_directories_command (struct ui_file *file, int from_tty, | |
342 | struct cmd_list_element *c, const char *value) | |
343 | { | |
344 | show_directories_1 (NULL, from_tty); | |
345 | } | |
346 | ||
583068ca | 347 | /* See source.h. */ |
00174a86 TT |
348 | |
349 | void | |
350 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
351 | { | |
d5da8b3c | 352 | for (compunit_symtab *cu : objfile_compunits (objfile)) |
00174a86 | 353 | { |
d5da8b3c | 354 | for (symtab *s : compunit_filetabs (cu)) |
00174a86 | 355 | { |
d5da8b3c TT |
356 | if (s->line_charpos != NULL) |
357 | { | |
358 | xfree (s->line_charpos); | |
359 | s->line_charpos = NULL; | |
360 | } | |
361 | if (s->fullname != NULL) | |
362 | { | |
363 | xfree (s->fullname); | |
364 | s->fullname = NULL; | |
365 | } | |
00174a86 | 366 | } |
00174a86 | 367 | } |
6f809020 DE |
368 | |
369 | if (objfile->sf) | |
370 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
371 | } |
372 | ||
583068ca | 373 | /* See source.h. */ |
c906108c SS |
374 | |
375 | void | |
fba45db2 | 376 | forget_cached_source_info (void) |
c906108c | 377 | { |
6c95b8df | 378 | struct program_space *pspace; |
c906108c | 379 | |
6c95b8df | 380 | ALL_PSPACES (pspace) |
99d89cde TT |
381 | for (objfile *objfile : all_objfiles (pspace)) |
382 | { | |
383 | forget_cached_source_info_for_objfile (objfile); | |
384 | } | |
c4e86dd4 | 385 | |
62f29fda | 386 | g_source_cache.clear (); |
c4e86dd4 | 387 | last_source_visited = NULL; |
c906108c SS |
388 | } |
389 | ||
390 | void | |
fba45db2 | 391 | init_source_path (void) |
c906108c SS |
392 | { |
393 | char buf[20]; | |
394 | ||
08850b56 | 395 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 396 | source_path = xstrdup (buf); |
c906108c SS |
397 | forget_cached_source_info (); |
398 | } | |
399 | ||
400 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 401 | |
28da1647 | 402 | static void |
5fed81ff | 403 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
404 | { |
405 | dont_repeat (); | |
c378eb4e | 406 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
407 | if (dirname == 0) |
408 | { | |
80618b99 | 409 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 410 | { |
b8c9b27d | 411 | xfree (source_path); |
c906108c SS |
412 | init_source_path (); |
413 | } | |
414 | } | |
415 | else | |
416 | { | |
417 | mod_path (dirname, &source_path); | |
c4e86dd4 | 418 | forget_cached_source_info (); |
c906108c SS |
419 | } |
420 | if (from_tty) | |
99e7ae30 | 421 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
422 | } |
423 | ||
13d35ae5 AS |
424 | /* Add a path given with the -d command line switch. |
425 | This will not be quoted so we must not treat spaces as separators. */ | |
426 | ||
427 | void | |
5614fb77 | 428 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
429 | { |
430 | add_path (dirname, &source_path, 0); | |
431 | } | |
432 | ||
c906108c SS |
433 | /* Add zero or more directories to the front of an arbitrary path. */ |
434 | ||
435 | void | |
5614fb77 | 436 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
437 | { |
438 | add_path (dirname, which_path, 1); | |
439 | } | |
440 | ||
441 | /* Workhorse of mod_path. Takes an extra argument to determine | |
442 | if dirname should be parsed for separators that indicate multiple | |
443 | directories. This allows for interfaces that pre-parse the dirname | |
444 | and allow specification of traditional separator characters such | |
c378eb4e | 445 | as space or tab. */ |
c04e0a08 JJ |
446 | |
447 | void | |
5614fb77 | 448 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
449 | { |
450 | char *old = *which_path; | |
451 | int prefix = 0; | |
e80aaf61 | 452 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
453 | |
454 | if (dirname == 0) | |
455 | return; | |
456 | ||
13d35ae5 AS |
457 | if (parse_separators) |
458 | { | |
459 | /* This will properly parse the space and tab separators | |
e4ab2fad | 460 | and any quotes that may exist. */ |
773a1edc | 461 | gdb_argv argv (dirname); |
e4ab2fad | 462 | |
773a1edc TT |
463 | for (char *arg : argv) |
464 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
465 | } |
466 | else | |
e80aaf61 | 467 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 468 | |
e80aaf61 | 469 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) |
c906108c | 470 | { |
e80aaf61 | 471 | char *name = name_up.get (); |
aa1ee363 | 472 | char *p; |
c906108c | 473 | struct stat st; |
db68fbe2 | 474 | gdb::unique_xmalloc_ptr<char> new_name_holder; |
c906108c | 475 | |
e4ab2fad JK |
476 | /* Spaces and tabs will have been removed by buildargv(). |
477 | NAME is the start of the directory. | |
478 | P is the '\0' following the end. */ | |
479 | p = name + strlen (name); | |
13d35ae5 AS |
480 | |
481 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 482 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 483 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 484 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 485 | #endif |
13d35ae5 | 486 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 487 | /* Sigh. "foo/" => "foo" */ |
c906108c | 488 | --p; |
c906108c SS |
489 | *p = '\0'; |
490 | ||
7be570e7 | 491 | while (p > name && p[-1] == '.') |
c906108c SS |
492 | { |
493 | if (p - name == 1) | |
494 | { | |
495 | /* "." => getwd (). */ | |
496 | name = current_directory; | |
497 | goto append; | |
498 | } | |
fe4e3eb8 | 499 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
500 | { |
501 | if (p - name == 2) | |
502 | { | |
503 | /* "/." => "/". */ | |
504 | *--p = '\0'; | |
505 | goto append; | |
506 | } | |
507 | else | |
508 | { | |
509 | /* "...foo/." => "...foo". */ | |
510 | p -= 2; | |
511 | *p = '\0'; | |
512 | continue; | |
513 | } | |
514 | } | |
515 | else | |
516 | break; | |
517 | } | |
518 | ||
519 | if (name[0] == '~') | |
db68fbe2 | 520 | new_name_holder.reset (tilde_expand (name)); |
c3690141 | 521 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 522 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
db68fbe2 | 523 | new_name_holder.reset (concat (name, ".", (char *) NULL)); |
7be570e7 | 524 | #endif |
fe4e3eb8 | 525 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
db68fbe2 TT |
526 | new_name_holder.reset (concat (current_directory, SLASH_STRING, name, |
527 | (char *) NULL)); | |
c906108c | 528 | else |
db68fbe2 TT |
529 | new_name_holder.reset (savestring (name, p - name)); |
530 | name = new_name_holder.get (); | |
c906108c SS |
531 | |
532 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
533 | if (name[0] != '$') |
534 | { | |
535 | /* These are warnings, not errors, since we don't want a | |
536 | non-existent directory in a .gdbinit file to stop processing | |
537 | of the .gdbinit file. | |
538 | ||
539 | Whether they get added to the path is more debatable. Current | |
540 | answer is yes, in case the user wants to go make the directory | |
541 | or whatever. If the directory continues to not exist/not be | |
542 | a directory/etc, then having them in the path should be | |
543 | harmless. */ | |
544 | if (stat (name, &st) < 0) | |
545 | { | |
546 | int save_errno = errno; | |
433759f7 | 547 | |
c5aa993b JM |
548 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
549 | print_sys_errmsg (name, save_errno); | |
550 | } | |
551 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 552 | warning (_("%s is not a directory."), name); |
c5aa993b | 553 | } |
c906108c SS |
554 | |
555 | append: | |
556 | { | |
aa1ee363 | 557 | unsigned int len = strlen (name); |
5ee4ed9f | 558 | char tinybuf[2]; |
c906108c SS |
559 | |
560 | p = *which_path; | |
5e3f4fab | 561 | while (1) |
c906108c | 562 | { |
5e3f4fab EBM |
563 | /* FIXME: we should use realpath() or its work-alike |
564 | before comparing. Then all the code above which | |
565 | removes excess slashes and dots could simply go away. */ | |
566 | if (!filename_ncmp (p, name, len) | |
567 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
568 | { | |
569 | /* Found it in the search path, remove old copy. */ | |
570 | if (p > *which_path) | |
571 | { | |
572 | /* Back over leading separator. */ | |
573 | p--; | |
574 | } | |
575 | if (prefix > p - *which_path) | |
576 | { | |
577 | /* Same dir twice in one cmd. */ | |
578 | goto skip_dup; | |
579 | } | |
580 | /* Copy from next '\0' or ':'. */ | |
581 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
582 | } | |
583 | p = strchr (p, DIRNAME_SEPARATOR); | |
584 | if (p != 0) | |
585 | ++p; | |
586 | else | |
587 | break; | |
c906108c | 588 | } |
c906108c | 589 | |
5ee4ed9f JK |
590 | tinybuf[0] = DIRNAME_SEPARATOR; |
591 | tinybuf[1] = '\0'; | |
c906108c | 592 | |
5ee4ed9f JK |
593 | /* If we have already tacked on a name(s) in this command, |
594 | be sure they stay on the front as we tack on some | |
595 | more. */ | |
596 | if (prefix) | |
597 | { | |
598 | char *temp, c; | |
599 | ||
600 | c = old[prefix]; | |
601 | old[prefix] = '\0'; | |
602 | temp = concat (old, tinybuf, name, (char *)NULL); | |
603 | old[prefix] = c; | |
604 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
605 | prefix = strlen (temp); | |
606 | xfree (temp); | |
607 | } | |
608 | else | |
609 | { | |
610 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
611 | old, (char *)NULL); | |
612 | prefix = strlen (name); | |
c906108c | 613 | } |
5ee4ed9f JK |
614 | xfree (old); |
615 | old = *which_path; | |
c906108c | 616 | } |
82ae4854 | 617 | skip_dup: |
b27cf2b3 | 618 | ; |
c5aa993b | 619 | } |
c906108c SS |
620 | } |
621 | ||
622 | ||
623 | static void | |
1d12d88f | 624 | info_source_command (const char *ignore, int from_tty) |
c906108c | 625 | { |
52f0bd74 | 626 | struct symtab *s = current_source_symtab; |
b6577aab | 627 | struct compunit_symtab *cust; |
c906108c SS |
628 | |
629 | if (!s) | |
630 | { | |
a3f17187 | 631 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
632 | return; |
633 | } | |
b6577aab DE |
634 | |
635 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 636 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
637 | if (SYMTAB_DIRNAME (s) != NULL) |
638 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 639 | if (s->fullname) |
a3f17187 | 640 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 641 | if (s->nlines) |
a3f17187 | 642 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
643 | s->nlines == 1 ? "" : "s"); |
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 | |
c906108c | 657 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
658 | using mode MODE in the calls to open. You cannot use this function to |
659 | create files (O_CREAT). | |
c906108c | 660 | |
014d698b EZ |
661 | OPTS specifies the function behaviour in specific cases. |
662 | ||
663 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 664 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
665 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
666 | disables searching of the path (this is so that "exec-file ./foo" or | |
667 | "symbol-file ./foo" insures that you get that particular version of | |
668 | foo or an error message). | |
c906108c | 669 | |
014d698b EZ |
670 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
671 | searched in path (we usually want this for source files but not for | |
672 | executables). | |
673 | ||
e7a8479f | 674 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 675 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
676 | have to take special pains to avoid doubling the "/" between the directory |
677 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
678 | source file name!!! | |
679 | ||
492c0ab7 JK |
680 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
681 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
682 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
683 | effect. | |
1f0c4988 | 684 | |
c906108c SS |
685 | If a file is found, return the descriptor. |
686 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
687 | ||
688 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 689 | >>>> eg executable, non-directory. */ |
c906108c | 690 | int |
24b9144d | 691 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 692 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 693 | { |
52f0bd74 AC |
694 | int fd; |
695 | char *filename; | |
c906108c | 696 | int alloclen; |
79b289e2 PA |
697 | /* The errno set for the last name we tried to open (and |
698 | failed). */ | |
699 | int last_errno = 0; | |
e80aaf61 | 700 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 701 | |
fbdebf46 JK |
702 | /* The open syscall MODE parameter is not specified. */ |
703 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
704 | gdb_assert (string != NULL); |
705 | ||
706 | /* A file with an empty name cannot possibly exist. Report a failure | |
707 | without further checking. | |
708 | ||
709 | This is an optimization which also defends us against buggy | |
710 | implementations of the "stat" function. For instance, we have | |
711 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
712 | when the debugger is started with an empty argument. */ | |
713 | if (string[0] == '\0') | |
714 | { | |
715 | errno = ENOENT; | |
716 | return -1; | |
717 | } | |
fbdebf46 | 718 | |
c906108c SS |
719 | if (!path) |
720 | path = "."; | |
721 | ||
c906108c | 722 | mode |= O_BINARY; |
c906108c | 723 | |
014d698b | 724 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 725 | { |
a55411b9 | 726 | int i, reg_file_errno; |
072b1022 | 727 | |
a55411b9 | 728 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 729 | { |
224c3ddb | 730 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 731 | strcpy (filename, string); |
614c279d | 732 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
733 | if (fd >= 0) |
734 | goto done; | |
a55411b9 | 735 | last_errno = errno; |
072b1022 DJ |
736 | } |
737 | else | |
3f565f1e DJ |
738 | { |
739 | filename = NULL; | |
740 | fd = -1; | |
a55411b9 | 741 | last_errno = reg_file_errno; |
3f565f1e | 742 | } |
072b1022 | 743 | |
014d698b EZ |
744 | if (!(opts & OPF_SEARCH_IN_PATH)) |
745 | for (i = 0; string[i]; i++) | |
746 | if (IS_DIR_SEPARATOR (string[i])) | |
747 | goto done; | |
c906108c SS |
748 | } |
749 | ||
e6d9b9c2 DE |
750 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
751 | if (HAS_DRIVE_SPEC (string)) | |
752 | string = STRIP_DRIVE_SPEC (string); | |
753 | ||
c378eb4e | 754 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
755 | while (IS_DIR_SEPARATOR(string[0])) |
756 | string++; | |
757 | ||
c906108c | 758 | /* ./foo => foo */ |
fe4e3eb8 | 759 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
760 | string += 2; |
761 | ||
762 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 763 | filename = (char *) alloca (alloclen); |
c906108c | 764 | fd = -1; |
79b289e2 | 765 | last_errno = ENOENT; |
e4ab2fad JK |
766 | |
767 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 768 | |
e80aaf61 | 769 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 770 | { |
e80aaf61 | 771 | char *dir = dir_up.get (); |
e4ab2fad | 772 | size_t len = strlen (dir); |
a55411b9 | 773 | int reg_file_errno; |
c906108c | 774 | |
e4ab2fad | 775 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
776 | { |
777 | /* Name is $cwd -- insert current directory name instead. */ | |
778 | int newlen; | |
779 | ||
c378eb4e | 780 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
781 | len = strlen (current_directory); |
782 | newlen = len + strlen (string) + 2; | |
783 | if (newlen > alloclen) | |
784 | { | |
785 | alloclen = newlen; | |
224c3ddb | 786 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
787 | } |
788 | strcpy (filename, current_directory); | |
789 | } | |
ebd86fb5 TJB |
790 | else if (strchr(dir, '~')) |
791 | { | |
792 | /* See whether we need to expand the tilde. */ | |
793 | int newlen; | |
ebd86fb5 | 794 | |
ee0c3293 | 795 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
796 | |
797 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 798 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
799 | newlen = len + strlen (string) + 2; |
800 | if (newlen > alloclen) | |
801 | { | |
802 | alloclen = newlen; | |
224c3ddb | 803 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 804 | } |
ee0c3293 | 805 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 806 | } |
c5aa993b JM |
807 | else |
808 | { | |
809 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 810 | strcpy (filename, dir); |
08001717 DE |
811 | |
812 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
813 | don't have enough information to expand it. The user *could* | |
814 | have an actual directory named '$cdir' but handling that would | |
815 | be confusing, it would mean different things in different | |
816 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
817 | We can get $cdir when loading scripts. When loading source files | |
818 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 819 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 820 | continue; |
c906108c | 821 | } |
c906108c | 822 | |
c378eb4e | 823 | /* Remove trailing slashes. */ |
fe4e3eb8 | 824 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
825 | filename[--len] = 0; |
826 | ||
c5aa993b | 827 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
828 | strcat (filename, string); |
829 | ||
a55411b9 | 830 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 831 | { |
614c279d | 832 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
833 | if (fd >= 0) |
834 | break; | |
79b289e2 | 835 | last_errno = errno; |
5e987968 | 836 | } |
a55411b9 DE |
837 | else |
838 | last_errno = reg_file_errno; | |
c906108c SS |
839 | } |
840 | ||
c5aa993b | 841 | done: |
c906108c SS |
842 | if (filename_opened) |
843 | { | |
f5b95b50 | 844 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 845 | if (fd < 0) |
e0cc99a6 | 846 | filename_opened->reset (NULL); |
04affae3 | 847 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 848 | *filename_opened = gdb_realpath (filename); |
c906108c | 849 | else |
e0cc99a6 | 850 | *filename_opened = gdb_abspath (filename); |
c906108c | 851 | } |
c906108c | 852 | |
79b289e2 | 853 | errno = last_errno; |
c906108c SS |
854 | return fd; |
855 | } | |
856 | ||
c5aa993b | 857 | |
c906108c SS |
858 | /* This is essentially a convenience, for clients that want the behaviour |
859 | of openp, using source_path, but that really don't want the file to be | |
860 | opened but want instead just to know what the full pathname is (as | |
861 | qualified against source_path). | |
862 | ||
863 | The current working directory is searched first. | |
864 | ||
865 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
866 | set to the fully-qualified pathname. | |
867 | ||
5e987968 | 868 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 869 | int |
e0cc99a6 TT |
870 | source_full_path_of (const char *filename, |
871 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 872 | { |
c5aa993b | 873 | int fd; |
c906108c | 874 | |
492c0ab7 JK |
875 | fd = openp (source_path, |
876 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
877 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
878 | if (fd < 0) |
879 | { | |
e0cc99a6 | 880 | full_pathname->reset (NULL); |
c906108c SS |
881 | return 0; |
882 | } | |
883 | ||
884 | close (fd); | |
885 | return 1; | |
886 | } | |
887 | ||
2f61ca93 JB |
888 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
889 | applied to PATH. */ | |
890 | ||
891 | static int | |
892 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
893 | const char *path) | |
894 | { | |
895 | const int from_len = strlen (rule->from); | |
896 | const int path_len = strlen (path); | |
2f61ca93 JB |
897 | |
898 | if (path_len < from_len) | |
899 | return 0; | |
900 | ||
901 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 902 | so the path should start with rule->from. */ |
2f61ca93 | 903 | |
486ef3b9 | 904 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
905 | return 0; |
906 | ||
907 | /* Make sure that the region in the path that matches the substitution | |
908 | rule is immediately followed by a directory separator (or the end of | |
909 | string character). */ | |
230cd560 | 910 | |
2f61ca93 JB |
911 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
912 | return 0; | |
913 | ||
914 | return 1; | |
915 | } | |
916 | ||
917 | /* Find the substitute-path rule that applies to PATH and return it. | |
918 | Return NULL if no rule applies. */ | |
919 | ||
920 | static struct substitute_path_rule * | |
921 | get_substitute_path_rule (const char *path) | |
922 | { | |
923 | struct substitute_path_rule *rule = substitute_path_rules; | |
924 | ||
925 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
926 | rule = rule->next; | |
927 | ||
928 | return rule; | |
929 | } | |
930 | ||
931 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
932 | to PATH, then apply it and return the new path. |
933 | ||
2f61ca93 JB |
934 | Return NULL if no substitution rule was specified by the user, |
935 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
936 | |
937 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
938 | rewrite_source_path (const char *path) |
939 | { | |
940 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
941 | char *new_path; | |
942 | int from_len; | |
943 | ||
944 | if (rule == NULL) | |
945 | return NULL; | |
946 | ||
947 | from_len = strlen (rule->from); | |
948 | ||
949 | /* Compute the rewritten path and return it. */ | |
950 | ||
951 | new_path = | |
952 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
953 | strcpy (new_path, rule->to); | |
954 | strcat (new_path, path + from_len); | |
955 | ||
0b581c69 | 956 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
957 | } |
958 | ||
2179fbc3 TT |
959 | /* See source.h. */ |
960 | ||
961 | scoped_fd | |
e2357892 | 962 | find_and_open_source (const char *filename, |
5e987968 | 963 | const char *dirname, |
e0cc99a6 | 964 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
965 | { |
966 | char *path = source_path; | |
31889e00 | 967 | const char *p; |
c906108c | 968 | int result; |
c906108c | 969 | |
c378eb4e | 970 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 971 | |
57c22c6c | 972 | if (*fullname) |
c906108c | 973 | { |
2f61ca93 JB |
974 | /* The user may have requested that source paths be rewritten |
975 | according to substitution rules he provided. If a substitution | |
976 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
977 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
978 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
979 | |
980 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 981 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 982 | |
e0cc99a6 | 983 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 984 | if (result >= 0) |
bc3aa6c3 | 985 | { |
e0cc99a6 | 986 | *fullname = gdb_realpath (fullname->get ()); |
2179fbc3 | 987 | return scoped_fd (result); |
bc3aa6c3 DE |
988 | } |
989 | ||
c378eb4e | 990 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 991 | fullname->reset (NULL); |
c906108c SS |
992 | } |
993 | ||
0b581c69 | 994 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 995 | if (dirname != NULL) |
c906108c | 996 | { |
2f61ca93 JB |
997 | /* If necessary, rewrite the compilation directory name according |
998 | to the source path substitution rules specified by the user. */ | |
999 | ||
0b581c69 | 1000 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1001 | |
1002 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1003 | dirname = rewritten_dirname.get (); |
1004 | ||
c378eb4e MS |
1005 | /* Replace a path entry of $cdir with the compilation directory |
1006 | name. */ | |
c906108c SS |
1007 | #define cdir_len 5 |
1008 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1009 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1010 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1011 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1012 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1013 | { |
1014 | int len; | |
1015 | ||
1016 | path = (char *) | |
57c22c6c | 1017 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1018 | len = p - source_path; |
c5aa993b | 1019 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1020 | strcpy (path + len, dirname); /* new stuff */ |
1021 | strcat (path + len, source_path + len + cdir_len); /* After | |
1022 | $cdir */ | |
c906108c SS |
1023 | } |
1024 | } | |
8da2a1df | 1025 | |
0b581c69 | 1026 | gdb::unique_xmalloc_ptr<char> rewritten_filename; |
8da2a1df | 1027 | if (IS_ABSOLUTE_PATH (filename)) |
56163ce1 | 1028 | { |
8da2a1df DJ |
1029 | /* If filename is absolute path, try the source path |
1030 | substitution on it. */ | |
0b581c69 | 1031 | rewritten_filename = rewrite_source_path (filename); |
56163ce1 JB |
1032 | |
1033 | if (rewritten_filename != NULL) | |
0b581c69 | 1034 | filename = rewritten_filename.get (); |
56163ce1 | 1035 | } |
c906108c | 1036 | |
492c0ab7 JK |
1037 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1038 | OPEN_MODE, fullname); | |
c906108c SS |
1039 | if (result < 0) |
1040 | { | |
c378eb4e | 1041 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1042 | p = lbasename (filename); |
1043 | if (p != filename) | |
492c0ab7 JK |
1044 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1045 | OPEN_MODE, fullname); | |
c906108c | 1046 | } |
c906108c | 1047 | |
2179fbc3 | 1048 | return scoped_fd (result); |
c906108c SS |
1049 | } |
1050 | ||
57c22c6c BR |
1051 | /* Open a source file given a symtab S. Returns a file descriptor or |
1052 | negative number for error. | |
1053 | ||
c378eb4e | 1054 | This function is a convience function to find_and_open_source. */ |
57c22c6c | 1055 | |
2179fbc3 | 1056 | scoped_fd |
57c22c6c BR |
1057 | open_source_file (struct symtab *s) |
1058 | { | |
5e987968 | 1059 | if (!s) |
2179fbc3 | 1060 | return scoped_fd (-1); |
57c22c6c | 1061 | |
54460946 | 1062 | gdb::unique_xmalloc_ptr<char> fullname (s->fullname); |
8e6a5953 | 1063 | s->fullname = NULL; |
2179fbc3 TT |
1064 | scoped_fd fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), |
1065 | &fullname); | |
e0cc99a6 TT |
1066 | s->fullname = fullname.release (); |
1067 | return fd; | |
57c22c6c BR |
1068 | } |
1069 | ||
1070 | /* Finds the fullname that a symtab represents. | |
c906108c | 1071 | |
f35a17b5 JK |
1072 | This functions finds the fullname and saves it in s->fullname. |
1073 | It will also return the value. | |
57c22c6c BR |
1074 | |
1075 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1076 | the expected fullname is used. Therefore the files does not have to |
1077 | exist. */ | |
256f06f3 | 1078 | |
0b0865da | 1079 | const char * |
57c22c6c | 1080 | symtab_to_fullname (struct symtab *s) |
c906108c | 1081 | { |
256f06f3 DE |
1082 | /* Use cached copy if we have it. |
1083 | We rely on forget_cached_source_info being called appropriately | |
1084 | to handle cases like the file being moved. */ | |
f35a17b5 | 1085 | if (s->fullname == NULL) |
5e987968 | 1086 | { |
2179fbc3 | 1087 | scoped_fd fd = open_source_file (s); |
f35a17b5 | 1088 | |
2179fbc3 | 1089 | if (fd.get () < 0) |
f0a4b570 | 1090 | { |
0b581c69 | 1091 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1092 | |
1093 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1094 | should report the pathname where GDB tried to find the file. */ | |
1095 | ||
ee6f8984 | 1096 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1097 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1098 | else |
0b581c69 TT |
1099 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1100 | s->filename, (char *) NULL)); | |
f0a4b570 | 1101 | |
0b581c69 | 1102 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1103 | if (s->fullname == NULL) |
0b581c69 | 1104 | s->fullname = fullname.release (); |
f0a4b570 | 1105 | } |
f35a17b5 | 1106 | } |
c906108c | 1107 | |
f35a17b5 | 1108 | return s->fullname; |
57c22c6c | 1109 | } |
1b56eb55 JK |
1110 | |
1111 | /* See commentary in source.h. */ | |
1112 | ||
1113 | const char * | |
1114 | symtab_to_filename_for_display (struct symtab *symtab) | |
1115 | { | |
1116 | if (filename_display_string == filename_display_basename) | |
1117 | return lbasename (symtab->filename); | |
1118 | else if (filename_display_string == filename_display_absolute) | |
1119 | return symtab_to_fullname (symtab); | |
1120 | else if (filename_display_string == filename_display_relative) | |
1121 | return symtab->filename; | |
1122 | else | |
1123 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1124 | } | |
5e987968 | 1125 | \f |
c906108c SS |
1126 | /* Create and initialize the table S->line_charpos that records |
1127 | the positions of the lines in the source file, which is assumed | |
1128 | to be open on descriptor DESC. | |
1129 | All set S->nlines to the number of such lines. */ | |
1130 | ||
1131 | void | |
fba45db2 | 1132 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1133 | { |
1134 | struct stat st; | |
a9abc434 | 1135 | char *p, *end; |
c906108c SS |
1136 | int nlines = 0; |
1137 | int lines_allocated = 1000; | |
1138 | int *line_charpos; | |
1139 | long mtime = 0; | |
1140 | int size; | |
1141 | ||
be8ca11b | 1142 | gdb_assert (s); |
8d749320 | 1143 | line_charpos = XNEWVEC (int, lines_allocated); |
c906108c | 1144 | if (fstat (desc, &st) < 0) |
05cba821 | 1145 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c | 1146 | |
eb822aa6 DE |
1147 | if (SYMTAB_OBJFILE (s) != NULL && SYMTAB_OBJFILE (s)->obfd != NULL) |
1148 | mtime = SYMTAB_OBJFILE (s)->mtime; | |
c906108c | 1149 | else if (exec_bfd) |
c04ea773 | 1150 | mtime = exec_bfd_mtime; |
c906108c SS |
1151 | |
1152 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1153 | warning (_("Source file is more recent than executable.")); |
c906108c | 1154 | |
c906108c | 1155 | { |
c906108c SS |
1156 | /* st_size might be a large type, but we only support source files whose |
1157 | size fits in an int. */ | |
1158 | size = (int) st.st_size; | |
1159 | ||
a9abc434 TT |
1160 | /* Use the heap, not the stack, because this may be pretty large, |
1161 | and we may run into various kinds of limits on stack size. */ | |
1162 | gdb::def_vector<char> data (size); | |
c906108c SS |
1163 | |
1164 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
a9abc434 | 1165 | size = myread (desc, data.data (), size); |
c906108c | 1166 | if (size < 0) |
05cba821 | 1167 | perror_with_name (symtab_to_filename_for_display (s)); |
9c3630e9 | 1168 | end = data.data () + size; |
a9abc434 | 1169 | p = &data[0]; |
c906108c SS |
1170 | line_charpos[0] = 0; |
1171 | nlines = 1; | |
1172 | while (p != end) | |
1173 | { | |
1174 | if (*p++ == '\n' | |
c5aa993b | 1175 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1176 | && p != end) |
1177 | { | |
1178 | if (nlines == lines_allocated) | |
1179 | { | |
1180 | lines_allocated *= 2; | |
1181 | line_charpos = | |
0efffb96 AC |
1182 | (int *) xrealloc ((char *) line_charpos, |
1183 | sizeof (int) * lines_allocated); | |
c906108c | 1184 | } |
a9abc434 | 1185 | line_charpos[nlines++] = p - data.data (); |
c906108c SS |
1186 | } |
1187 | } | |
c906108c | 1188 | } |
d4d4db8a | 1189 | |
c906108c SS |
1190 | s->nlines = nlines; |
1191 | s->line_charpos = | |
0efffb96 | 1192 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1193 | |
1194 | } | |
1195 | ||
c906108c | 1196 | \f |
c5aa993b | 1197 | |
c906108c | 1198 | /* Get full pathname and line number positions for a symtab. |
c906108c SS |
1199 | Set *FULLNAME to actual name of the file as found by `openp', |
1200 | or to 0 if the file is not found. */ | |
1201 | ||
0614ef69 | 1202 | static void |
fba45db2 | 1203 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1204 | { |
2179fbc3 | 1205 | scoped_fd desc = open_source_file (s); |
5dc1a704 | 1206 | if (desc.get () < 0) |
c906108c SS |
1207 | { |
1208 | if (fullname) | |
1209 | *fullname = NULL; | |
0614ef69 | 1210 | return; |
c5aa993b | 1211 | } |
c906108c SS |
1212 | if (fullname) |
1213 | *fullname = s->fullname; | |
c5aa993b | 1214 | if (s->line_charpos == 0) |
5dc1a704 | 1215 | find_source_lines (s, desc.get ()); |
c906108c SS |
1216 | } |
1217 | ||
583068ca | 1218 | /* See source.h. */ |
c906108c SS |
1219 | |
1220 | int | |
fba45db2 KB |
1221 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1222 | CORE_ADDR pc) | |
c906108c SS |
1223 | { |
1224 | if (s->line_charpos == 0) | |
c5aa993b | 1225 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1226 | if (s->fullname == 0) |
1227 | return 0; | |
1228 | if (line > s->nlines) | |
1229 | /* Don't index off the end of the line_charpos array. */ | |
1230 | return 0; | |
1231 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
eb822aa6 | 1232 | mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), pc); |
c906108c SS |
1233 | |
1234 | current_source_line = line; | |
c906108c | 1235 | current_source_symtab = s; |
5166082f | 1236 | clear_lines_listed_range (); |
c906108c SS |
1237 | return 1; |
1238 | } | |
c906108c | 1239 | \f |
c5aa993b | 1240 | |
c906108c | 1241 | /* Print source lines from the file of symtab S, |
c378eb4e | 1242 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1243 | |
1244 | static void | |
dfaae886 | 1245 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1246 | print_source_lines_flags flags) |
c906108c | 1247 | { |
52f0bd74 | 1248 | int c; |
2179fbc3 | 1249 | scoped_fd desc; |
f4dfd9c0 | 1250 | int noprint = 0; |
c906108c | 1251 | int nlines = stopline - line; |
79a45e25 | 1252 | struct ui_out *uiout = current_uiout; |
c906108c | 1253 | |
c378eb4e | 1254 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1255 | current_source_symtab = s; |
1256 | current_source_line = line; | |
1257 | first_line_listed = line; | |
1258 | ||
3e43a32a | 1259 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1260 | number. */ |
112e8700 | 1261 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1262 | { |
c378eb4e | 1263 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1264 | if ((s != last_source_visited) || (!last_source_error)) |
1265 | { | |
1266 | last_source_visited = s; | |
1267 | desc = open_source_file (s); | |
2179fbc3 TT |
1268 | if (desc.get () < 0) |
1269 | { | |
1270 | last_source_error = desc.get (); | |
1271 | noprint = 1; | |
1272 | } | |
c5aa993b JM |
1273 | } |
1274 | else | |
1275 | { | |
dfaae886 | 1276 | flags |= PRINT_SOURCE_LINES_NOERROR; |
2179fbc3 | 1277 | noprint = 1; |
c5aa993b | 1278 | } |
8b93c638 JM |
1279 | } |
1280 | else | |
1281 | { | |
8d297bbf | 1282 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1283 | noprint = 1; |
8b93c638 | 1284 | } |
c906108c | 1285 | |
2179fbc3 | 1286 | if (noprint) |
c906108c | 1287 | { |
dfaae886 | 1288 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1289 | { |
05cba821 JK |
1290 | const char *filename = symtab_to_filename_for_display (s); |
1291 | int len = strlen (filename) + 100; | |
224c3ddb | 1292 | char *name = (char *) alloca (len); |
08850b56 | 1293 | |
05cba821 | 1294 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1295 | print_sys_errmsg (name, errno); |
1296 | } | |
1297 | else | |
fc0ae648 | 1298 | { |
112e8700 SM |
1299 | uiout->field_int ("line", line); |
1300 | uiout->text ("\tin "); | |
56d397a3 | 1301 | |
23eb71e4 JK |
1302 | /* CLI expects only the "file" field. TUI expects only the |
1303 | "fullname" field (and TUI does break if "file" is printed). | |
1304 | MI expects both fields. ui_source_list is set only for CLI, | |
1305 | not for TUI. */ | |
112e8700 | 1306 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
cbe56571 TT |
1307 | uiout->field_string ("file", symtab_to_filename_for_display (s), |
1308 | ui_out_style_kind::FILE); | |
112e8700 | 1309 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) |
8f1b8b82 JK |
1310 | { |
1311 | const char *s_fullname = symtab_to_fullname (s); | |
1312 | char *local_fullname; | |
1313 | ||
1314 | /* ui_out_field_string may free S_FULLNAME by calling | |
1315 | open_source_file for it again. See e.g., | |
1316 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1317 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1318 | strcpy (local_fullname, s_fullname); |
1319 | ||
112e8700 | 1320 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1321 | } |
23eb71e4 | 1322 | |
112e8700 | 1323 | uiout->text ("\n"); |
fc0ae648 | 1324 | } |
c906108c SS |
1325 | |
1326 | return; | |
1327 | } | |
1328 | ||
1329 | last_source_error = 0; | |
1330 | ||
ec98a4ad | 1331 | /* If the user requested a sequence of lines that seems to go backward |
0e2a2133 AB |
1332 | (from high to low line numbers) then we don't print anything. */ |
1333 | if (stopline <= line) | |
ec98a4ad AB |
1334 | return; |
1335 | ||
62f29fda TT |
1336 | std::string lines; |
1337 | if (!g_source_cache.get_source_lines (s, line, stopline - 1, &lines)) | |
2179fbc3 TT |
1338 | error (_("Line number %d out of range; %s has %d lines."), |
1339 | line, symtab_to_filename_for_display (s), s->nlines); | |
c906108c | 1340 | |
62f29fda | 1341 | const char *iter = lines.c_str (); |
c906108c SS |
1342 | while (nlines-- > 0) |
1343 | { | |
8b93c638 JM |
1344 | char buf[20]; |
1345 | ||
62f29fda TT |
1346 | c = *iter++; |
1347 | if (c == '\0') | |
8b93c638 JM |
1348 | break; |
1349 | last_line_listed = current_source_line; | |
4cd29721 MM |
1350 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1351 | { | |
112e8700 SM |
1352 | uiout->text (symtab_to_filename_for_display (s)); |
1353 | uiout->text (":"); | |
4cd29721 | 1354 | } |
08850b56 | 1355 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
112e8700 | 1356 | uiout->text (buf); |
8b93c638 JM |
1357 | do |
1358 | { | |
62f29fda | 1359 | if (c < 040 && c != '\t' && c != '\n' && c != '\r' && c != '\033') |
8b93c638 | 1360 | { |
08850b56 | 1361 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
112e8700 | 1362 | uiout->text (buf); |
8b93c638 JM |
1363 | } |
1364 | else if (c == 0177) | |
112e8700 | 1365 | uiout->text ("^?"); |
8b93c638 JM |
1366 | else if (c == '\r') |
1367 | { | |
1368 | /* Skip a \r character, but only before a \n. */ | |
62ea19c1 | 1369 | if (*iter != '\n') |
8b93c638 | 1370 | printf_filtered ("^%c", c + 0100); |
8b93c638 | 1371 | } |
8b93c638 JM |
1372 | else |
1373 | { | |
08850b56 | 1374 | xsnprintf (buf, sizeof (buf), "%c", c); |
112e8700 | 1375 | uiout->text (buf); |
8b93c638 JM |
1376 | } |
1377 | } | |
62f29fda TT |
1378 | while (c != '\n' && (c = *iter++) != '\0'); |
1379 | if (c == '\0') | |
1380 | break; | |
c906108c | 1381 | } |
ec98a4ad | 1382 | if (!lines.empty() && lines.back () != '\n') |
62f29fda | 1383 | uiout->text ("\n"); |
c906108c SS |
1384 | } |
1385 | \f | |
583068ca AB |
1386 | |
1387 | /* See source.h. */ | |
c906108c | 1388 | |
c5aa993b | 1389 | void |
dfaae886 | 1390 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1391 | print_source_lines_flags flags) |
c906108c | 1392 | { |
dfaae886 | 1393 | print_source_lines_base (s, line, stopline, flags); |
c906108c | 1394 | } |
0e2a2133 AB |
1395 | |
1396 | /* See source.h. */ | |
1397 | ||
1398 | void | |
1399 | print_source_lines (struct symtab *s, source_lines_range line_range, | |
1400 | print_source_lines_flags flags) | |
1401 | { | |
1402 | print_source_lines_base (s, line_range.startline (), | |
1403 | line_range.stopline (), flags); | |
1404 | } | |
1405 | ||
1406 | ||
c906108c | 1407 | \f |
c906108c SS |
1408 | /* Print info on range of pc's in a specified line. */ |
1409 | ||
1410 | static void | |
1d12d88f | 1411 | info_line_command (const char *arg, int from_tty) |
c906108c | 1412 | { |
c906108c | 1413 | CORE_ADDR start_pc, end_pc; |
c906108c | 1414 | |
6c5b2ebe PA |
1415 | std::vector<symtab_and_line> decoded_sals; |
1416 | symtab_and_line curr_sal; | |
1417 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1418 | |
1419 | if (arg == 0) | |
1420 | { | |
6c5b2ebe PA |
1421 | curr_sal.symtab = current_source_symtab; |
1422 | curr_sal.pspace = current_program_space; | |
5166082f | 1423 | if (last_line_listed != 0) |
6c5b2ebe | 1424 | curr_sal.line = last_line_listed; |
5166082f | 1425 | else |
6c5b2ebe | 1426 | curr_sal.line = current_source_line; |
5166082f | 1427 | |
6c5b2ebe | 1428 | sals = curr_sal; |
c906108c SS |
1429 | } |
1430 | else | |
1431 | { | |
6c5b2ebe PA |
1432 | decoded_sals = decode_line_with_last_displayed (arg, |
1433 | DECODE_LINE_LIST_MODE); | |
1434 | sals = decoded_sals; | |
c5aa993b | 1435 | |
c906108c SS |
1436 | dont_repeat (); |
1437 | } | |
1438 | ||
1439 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1440 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1441 | for (const auto &sal : sals) |
c906108c | 1442 | { |
f8eba3c6 TT |
1443 | if (sal.pspace != current_program_space) |
1444 | continue; | |
c5aa993b | 1445 | |
c906108c SS |
1446 | if (sal.symtab == 0) |
1447 | { | |
5af949e3 UW |
1448 | struct gdbarch *gdbarch = get_current_arch (); |
1449 | ||
a3f17187 | 1450 | printf_filtered (_("No line number information available")); |
c906108c SS |
1451 | if (sal.pc != 0) |
1452 | { | |
1453 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1454 | user about a source line, at least let them have the symbolic |
1455 | address. */ | |
c906108c SS |
1456 | printf_filtered (" for address "); |
1457 | wrap_here (" "); | |
5af949e3 | 1458 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1459 | } |
1460 | else | |
1461 | printf_filtered ("."); | |
1462 | printf_filtered ("\n"); | |
1463 | } | |
1464 | else if (sal.line > 0 | |
1465 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1466 | { | |
eb822aa6 DE |
1467 | struct gdbarch *gdbarch |
1468 | = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); | |
5af949e3 | 1469 | |
c906108c SS |
1470 | if (start_pc == end_pc) |
1471 | { | |
1472 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1473 | sal.line, |
1474 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1475 | wrap_here (" "); |
1476 | printf_filtered (" is at address "); | |
5af949e3 | 1477 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1478 | wrap_here (" "); |
1479 | printf_filtered (" but contains no code.\n"); | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1484 | sal.line, |
1485 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1486 | wrap_here (" "); |
1487 | printf_filtered (" starts at address "); | |
5af949e3 | 1488 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1489 | wrap_here (" "); |
1490 | printf_filtered (" and ends at "); | |
5af949e3 | 1491 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1492 | printf_filtered (".\n"); |
1493 | } | |
1494 | ||
1495 | /* x/i should display this line's code. */ | |
5af949e3 | 1496 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1497 | |
1498 | /* Repeating "info line" should do the following line. */ | |
1499 | last_line_listed = sal.line + 1; | |
1500 | ||
1501 | /* If this is the only line, show the source code. If it could | |
1502 | not find the file, don't do anything special. */ | |
6c5b2ebe | 1503 | if (annotation_level && sals.size () == 1) |
c906108c SS |
1504 | identify_source_line (sal.symtab, sal.line, 0, start_pc); |
1505 | } | |
1506 | else | |
1507 | /* Is there any case in which we get here, and have an address | |
1508 | which the user would want to see? If we have debugging symbols | |
1509 | and no line numbers? */ | |
a3f17187 | 1510 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1511 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1512 | } |
c906108c SS |
1513 | } |
1514 | \f | |
1515 | /* Commands to search the source file for a regexp. */ | |
1516 | ||
73e8dc90 PA |
1517 | /* Helper for forward_search_command/reverse_search_command. FORWARD |
1518 | indicates direction: true for forward, false for | |
1519 | backward/reverse. */ | |
1520 | ||
c906108c | 1521 | static void |
73e8dc90 | 1522 | search_command_helper (const char *regex, int from_tty, bool forward) |
c906108c | 1523 | { |
73e8dc90 | 1524 | const char *msg = re_comp (regex); |
c906108c | 1525 | if (msg) |
8a3fe4f8 | 1526 | error (("%s"), msg); |
c906108c SS |
1527 | |
1528 | if (current_source_symtab == 0) | |
1529 | select_source_symtab (0); | |
1530 | ||
2179fbc3 | 1531 | scoped_fd desc = open_source_file (current_source_symtab); |
77ad7394 | 1532 | if (desc.get () < 0) |
05cba821 | 1533 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c SS |
1534 | |
1535 | if (current_source_symtab->line_charpos == 0) | |
77ad7394 | 1536 | find_source_lines (current_source_symtab, desc.get ()); |
c906108c | 1537 | |
73e8dc90 PA |
1538 | int line = (forward |
1539 | ? last_line_listed + 1 | |
1540 | : last_line_listed - 1); | |
1541 | ||
c906108c | 1542 | if (line < 1 || line > current_source_symtab->nlines) |
9fe4a216 | 1543 | error (_("Expression not found")); |
c906108c | 1544 | |
77ad7394 TT |
1545 | if (lseek (desc.get (), current_source_symtab->line_charpos[line - 1], 0) |
1546 | < 0) | |
05cba821 | 1547 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1548 | |
2179fbc3 | 1549 | gdb_file_up stream = desc.to_file (FDOPEN_MODE); |
4a45905b | 1550 | clearerr (stream.get ()); |
73e8dc90 PA |
1551 | |
1552 | gdb::def_vector<char> buf; | |
1553 | buf.reserve (256); | |
1554 | ||
c5aa993b JM |
1555 | while (1) |
1556 | { | |
73e8dc90 | 1557 | buf.resize (0); |
c5aa993b | 1558 | |
73e8dc90 | 1559 | int c = fgetc (stream.get ()); |
c5aa993b JM |
1560 | if (c == EOF) |
1561 | break; | |
1562 | do | |
c906108c | 1563 | { |
73e8dc90 | 1564 | buf.push_back (c); |
c906108c | 1565 | } |
4a45905b | 1566 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1567 | |
7be570e7 JM |
1568 | /* Remove the \r, if any, at the end of the line, otherwise |
1569 | regular expressions that end with $ or \n won't work. */ | |
73e8dc90 PA |
1570 | size_t sz = buf.size (); |
1571 | if (sz >= 2 && buf[sz - 2] == '\r') | |
7be570e7 | 1572 | { |
73e8dc90 PA |
1573 | buf[sz - 2] = '\n'; |
1574 | buf.resize (sz - 1); | |
7be570e7 | 1575 | } |
7be570e7 | 1576 | |
c378eb4e | 1577 | /* We now have a source line in buf, null terminate and match. */ |
73e8dc90 PA |
1578 | buf.push_back ('\0'); |
1579 | if (re_exec (buf.data ()) > 0) | |
c5aa993b | 1580 | { |
c378eb4e | 1581 | /* Match! */ |
c5aa993b | 1582 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1583 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1584 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c5aa993b JM |
1585 | return; |
1586 | } | |
73e8dc90 PA |
1587 | |
1588 | if (forward) | |
1589 | line++; | |
1590 | else | |
1591 | { | |
1592 | line--; | |
b18ca514 PW |
1593 | if (line < 1) |
1594 | break; | |
73e8dc90 PA |
1595 | if (fseek (stream.get (), |
1596 | current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1597 | { | |
1598 | const char *filename | |
1599 | = symtab_to_filename_for_display (current_source_symtab); | |
1600 | perror_with_name (filename); | |
1601 | } | |
1602 | } | |
c5aa993b | 1603 | } |
c906108c | 1604 | |
a3f17187 | 1605 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1606 | } |
1607 | ||
c906108c | 1608 | static void |
73e8dc90 | 1609 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1610 | { |
73e8dc90 PA |
1611 | search_command_helper (regex, from_tty, true); |
1612 | } | |
c906108c | 1613 | |
73e8dc90 PA |
1614 | static void |
1615 | reverse_search_command (const char *regex, int from_tty) | |
1616 | { | |
1617 | search_command_helper (regex, from_tty, false); | |
c906108c | 1618 | } |
2f61ca93 JB |
1619 | |
1620 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1621 | ||
1622 | static void | |
1623 | strip_trailing_directory_separator (char *path) | |
1624 | { | |
1625 | const int last = strlen (path) - 1; | |
1626 | ||
1627 | if (last < 0) | |
1628 | return; /* No stripping is needed if PATH is the empty string. */ | |
1629 | ||
1630 | if (IS_DIR_SEPARATOR (path[last])) | |
1631 | path[last] = '\0'; | |
1632 | } | |
1633 | ||
1634 | /* Return the path substitution rule that matches FROM. | |
1635 | Return NULL if no rule matches. */ | |
1636 | ||
1637 | static struct substitute_path_rule * | |
1638 | find_substitute_path_rule (const char *from) | |
1639 | { | |
1640 | struct substitute_path_rule *rule = substitute_path_rules; | |
1641 | ||
1642 | while (rule != NULL) | |
1643 | { | |
1644 | if (FILENAME_CMP (rule->from, from) == 0) | |
1645 | return rule; | |
1646 | rule = rule->next; | |
1647 | } | |
1648 | ||
1649 | return NULL; | |
1650 | } | |
1651 | ||
1652 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1653 | The new rule will replace FROM into TO. */ | |
1654 | ||
29b0e8a2 | 1655 | void |
2f61ca93 JB |
1656 | add_substitute_path_rule (char *from, char *to) |
1657 | { | |
1658 | struct substitute_path_rule *rule; | |
8d749320 | 1659 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1660 | |
2f61ca93 JB |
1661 | new_rule->from = xstrdup (from); |
1662 | new_rule->to = xstrdup (to); | |
1663 | new_rule->next = NULL; | |
1664 | ||
1665 | /* If the list of rules are empty, then insert the new rule | |
1666 | at the head of the list. */ | |
1667 | ||
1668 | if (substitute_path_rules == NULL) | |
1669 | { | |
1670 | substitute_path_rules = new_rule; | |
1671 | return; | |
1672 | } | |
1673 | ||
1674 | /* Otherwise, skip to the last rule in our list and then append | |
1675 | the new rule. */ | |
1676 | ||
1677 | rule = substitute_path_rules; | |
1678 | while (rule->next != NULL) | |
1679 | rule = rule->next; | |
1680 | ||
1681 | rule->next = new_rule; | |
1682 | } | |
1683 | ||
1684 | /* Remove the given source path substitution rule from the current list | |
1685 | of rules. The memory allocated for that rule is also deallocated. */ | |
1686 | ||
1687 | static void | |
1688 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1689 | { | |
1690 | if (rule == substitute_path_rules) | |
1691 | substitute_path_rules = rule->next; | |
1692 | else | |
1693 | { | |
1694 | struct substitute_path_rule *prev = substitute_path_rules; | |
1695 | ||
1696 | while (prev != NULL && prev->next != rule) | |
1697 | prev = prev->next; | |
1698 | ||
1699 | gdb_assert (prev != NULL); | |
1700 | ||
1701 | prev->next = rule->next; | |
1702 | } | |
1703 | ||
1704 | xfree (rule->from); | |
1705 | xfree (rule->to); | |
1706 | xfree (rule); | |
1707 | } | |
1708 | ||
1709 | /* Implement the "show substitute-path" command. */ | |
1710 | ||
1711 | static void | |
a0d65762 | 1712 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1713 | { |
1714 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1715 | char *from = NULL; |
1716 | ||
773a1edc | 1717 | gdb_argv argv (args); |
2f61ca93 JB |
1718 | |
1719 | /* We expect zero or one argument. */ | |
1720 | ||
1721 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1722 | error (_("Too many arguments in command")); | |
1723 | ||
1724 | if (argv != NULL && argv[0] != NULL) | |
1725 | from = argv[0]; | |
1726 | ||
1727 | /* Print the substitution rules. */ | |
1728 | ||
1729 | if (from != NULL) | |
1730 | printf_filtered | |
1731 | (_("Source path substitution rule matching `%s':\n"), from); | |
1732 | else | |
1733 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1734 | ||
1735 | while (rule != NULL) | |
1736 | { | |
1e2ccb61 | 1737 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1738 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1739 | rule = rule->next; | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | /* Implement the "unset substitute-path" command. */ | |
1744 | ||
1745 | static void | |
a0d65762 | 1746 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1747 | { |
1748 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1749 | gdb_argv argv (args); |
2f61ca93 JB |
1750 | char *from = NULL; |
1751 | int rule_found = 0; | |
1752 | ||
1753 | /* This function takes either 0 or 1 argument. */ | |
1754 | ||
1755 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1756 | error (_("Incorrect usage, too many arguments in command")); | |
1757 | ||
1758 | if (argv != NULL && argv[0] != NULL) | |
1759 | from = argv[0]; | |
1760 | ||
1761 | /* If the user asked for all the rules to be deleted, ask him | |
1762 | to confirm and give him a chance to abort before the action | |
1763 | is performed. */ | |
1764 | ||
1765 | if (from == NULL | |
1766 | && !query (_("Delete all source path substitution rules? "))) | |
1767 | error (_("Canceled")); | |
1768 | ||
1769 | /* Delete the rule matching the argument. No argument means that | |
1770 | all rules should be deleted. */ | |
1771 | ||
1772 | while (rule != NULL) | |
1773 | { | |
1774 | struct substitute_path_rule *next = rule->next; | |
1775 | ||
1776 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1777 | { | |
1778 | delete_substitute_path_rule (rule); | |
1779 | rule_found = 1; | |
1780 | } | |
1781 | ||
1782 | rule = next; | |
1783 | } | |
1784 | ||
1785 | /* If the user asked for a specific rule to be deleted but | |
1786 | we could not find it, then report an error. */ | |
1787 | ||
1788 | if (from != NULL && !rule_found) | |
1789 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1790 | |
1791 | forget_cached_source_info (); | |
2f61ca93 JB |
1792 | } |
1793 | ||
1794 | /* Add a new source path substitution rule. */ | |
1795 | ||
1796 | static void | |
a0d65762 | 1797 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1798 | { |
2f61ca93 JB |
1799 | struct substitute_path_rule *rule; |
1800 | ||
773a1edc | 1801 | gdb_argv argv (args); |
2f61ca93 JB |
1802 | |
1803 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1804 | error (_("Incorrect usage, too few arguments in command")); | |
1805 | ||
1806 | if (argv[2] != NULL) | |
1807 | error (_("Incorrect usage, too many arguments in command")); | |
1808 | ||
1809 | if (*(argv[0]) == '\0') | |
1810 | error (_("First argument must be at least one character long")); | |
1811 | ||
1812 | /* Strip any trailing directory separator character in either FROM | |
1813 | or TO. The substitution rule already implicitly contains them. */ | |
1814 | strip_trailing_directory_separator (argv[0]); | |
1815 | strip_trailing_directory_separator (argv[1]); | |
1816 | ||
1817 | /* If a rule with the same "from" was previously defined, then | |
1818 | delete it. This new rule replaces it. */ | |
1819 | ||
1820 | rule = find_substitute_path_rule (argv[0]); | |
1821 | if (rule != NULL) | |
1822 | delete_substitute_path_rule (rule); | |
1823 | ||
1824 | /* Insert the new substitution rule. */ | |
1825 | ||
1826 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1827 | forget_cached_source_info (); |
2f61ca93 JB |
1828 | } |
1829 | ||
0e2a2133 AB |
1830 | /* See source.h. */ |
1831 | ||
1832 | source_lines_range::source_lines_range (int startline, | |
1833 | source_lines_range::direction dir) | |
1834 | { | |
1835 | if (dir == source_lines_range::FORWARD) | |
1836 | { | |
1837 | LONGEST end = static_cast <LONGEST> (startline) + get_lines_to_list (); | |
1838 | ||
1839 | if (end > INT_MAX) | |
1840 | end = INT_MAX; | |
1841 | ||
1842 | m_startline = startline; | |
1843 | m_stopline = static_cast <int> (end); | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | LONGEST start = static_cast <LONGEST> (startline) - get_lines_to_list (); | |
1848 | ||
1849 | if (start < 1) | |
1850 | start = 1; | |
1851 | ||
1852 | m_startline = static_cast <int> (start); | |
1853 | m_stopline = startline; | |
1854 | } | |
1855 | } | |
1856 | ||
c906108c SS |
1857 | \f |
1858 | void | |
fba45db2 | 1859 | _initialize_source (void) |
c906108c SS |
1860 | { |
1861 | struct cmd_list_element *c; | |
433759f7 | 1862 | |
c906108c SS |
1863 | current_source_symtab = 0; |
1864 | init_source_path (); | |
1865 | ||
1866 | /* The intention is to use POSIX Basic Regular Expressions. | |
1867 | Always use the GNU regex routine for consistency across all hosts. | |
1868 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1869 | just an approximation. */ | |
1870 | re_set_syntax (RE_SYNTAX_GREP); | |
1871 | ||
1a966eab AC |
1872 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1873 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1874 | Forget cached info on source file locations and line positions.\n\ |
1875 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1876 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1877 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1878 | &cmdlist); |
1879 | ||
1880 | if (dbx_commands) | |
c5aa993b | 1881 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1882 | |
5ba2abeb | 1883 | set_cmd_completer (c, filename_completer); |
c906108c | 1884 | |
99e7ae30 DE |
1885 | add_setshow_optional_filename_cmd ("directories", |
1886 | class_files, | |
1887 | &source_path, | |
1888 | _("\ | |
1889 | Set the search path for finding source files."), | |
1890 | _("\ | |
1891 | Show the search path for finding source files."), | |
1892 | _("\ | |
c906108c | 1893 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1894 | $cdir in the path means the compilation directory of the source file.\n\ |
1895 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1896 | appending these directories if necessary.\n\ | |
1897 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1898 | set_directories_command, | |
1899 | show_directories_command, | |
1900 | &setlist, &showlist); | |
c906108c | 1901 | |
11db9430 | 1902 | add_info ("source", info_source_command, |
1bedd215 | 1903 | _("Information about the current source file.")); |
c906108c | 1904 | |
11db9430 | 1905 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1906 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1907 | Line can be specified as\n\ |
1908 | LINENUM, to list around that line in current file,\n\ | |
1909 | FILE:LINENUM, to list around that line in that file,\n\ | |
1910 | FUNCTION, to list around beginning of that function,\n\ | |
1911 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1912 | Default is to describe the last source line that was listed.\n\n\ |
1913 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1914 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1915 | The address is also stored as the value of \"$_\".")); |
c906108c | 1916 | |
1bedd215 AC |
1917 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1918 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1919 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1920 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1921 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1922 | |
1bedd215 AC |
1923 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1924 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1925 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1926 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1927 | |
7f7cc265 | 1928 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1929 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1930 | Show number of source lines gdb will list by default."), _("\ |
1931 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1932 | the \"list\" argument explicitly specifies some other number).\n\ | |
1933 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1934 | NULL, |
1935 | show_lines_to_list, | |
1936 | &setlist, &showlist); | |
2f61ca93 JB |
1937 | |
1938 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1939 | _("\ | |
7ef2b397 JB |
1940 | Usage: set substitute-path FROM TO\n\ |
1941 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
1942 | If a substitution rule was previously set for FROM, the old rule\n\ | |
1943 | is replaced by the new one."), | |
1944 | &setlist); | |
2f61ca93 JB |
1945 | |
1946 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
1947 | _("\ | |
7ef2b397 JB |
1948 | Usage: unset substitute-path [FROM]\n\ |
1949 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
1950 | is not specified, all substituting rules are deleted.\n\ | |
1951 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
1952 | &unsetlist); |
1953 | ||
1954 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
1955 | _("\ |
1956 | Usage: show substitute-path [FROM]\n\ | |
1957 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
1958 | is not specified, print all substitution rules."), | |
2f61ca93 | 1959 | &showlist); |
1b56eb55 JK |
1960 | |
1961 | add_setshow_enum_cmd ("filename-display", class_files, | |
1962 | filename_display_kind_names, | |
1963 | &filename_display_string, _("\ | |
1964 | Set how to display filenames."), _("\ | |
1965 | Show how to display filenames."), _("\ | |
1966 | filename-display can be:\n\ | |
1967 | basename - display only basename of a filename\n\ | |
1968 | relative - display a filename relative to the compilation directory\n\ | |
1969 | absolute - display an absolute filename\n\ | |
1970 | By default, relative filenames are displayed."), | |
1971 | NULL, | |
1972 | show_filename_display_string, | |
1973 | &setlist, &showlist); | |
1974 | ||
c906108c | 1975 | } |