Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
e2882c85 | 2 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
5af949e3 | 20 | #include "arch-utils.h" |
c906108c SS |
21 | #include "symtab.h" |
22 | #include "expression.h" | |
23 | #include "language.h" | |
24 | #include "command.h" | |
c2c6d25f | 25 | #include "source.h" |
c906108c SS |
26 | #include "gdbcmd.h" |
27 | #include "frame.h" | |
28 | #include "value.h" | |
614c279d | 29 | #include "filestuff.h" |
c906108c SS |
30 | |
31 | #include <sys/types.h> | |
c906108c | 32 | #include <fcntl.h> |
c906108c | 33 | #include "gdbcore.h" |
88987551 | 34 | #include "gdb_regex.h" |
c906108c SS |
35 | #include "symfile.h" |
36 | #include "objfiles.h" | |
37 | #include "annotate.h" | |
38 | #include "gdbtypes.h" | |
c5f0f3d0 | 39 | #include "linespec.h" |
fe4e3eb8 | 40 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 41 | #include "completer.h" |
8b93c638 | 42 | #include "ui-out.h" |
dbda9972 | 43 | #include "readline/readline.h" |
8d297bbf | 44 | #include "common/enum-flags.h" |
325fac50 | 45 | #include <algorithm> |
b4987c95 | 46 | #include "common/pathstuff.h" |
c906108c | 47 | |
c906108c SS |
48 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
49 | #define FDOPEN_MODE FOPEN_RB | |
50 | ||
c378eb4e | 51 | /* Prototypes for local functions. */ |
c906108c | 52 | |
a14ed312 | 53 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 54 | |
c906108c SS |
55 | /* Path of directories to search for source files. |
56 | Same format as the PATH environment variable's value. */ | |
57 | ||
58 | char *source_path; | |
59 | ||
2f61ca93 JB |
60 | /* Support for source path substitution commands. */ |
61 | ||
62 | struct substitute_path_rule | |
63 | { | |
64 | char *from; | |
65 | char *to; | |
66 | struct substitute_path_rule *next; | |
67 | }; | |
68 | ||
69 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
70 | ||
c906108c SS |
71 | /* Symtab of default file for listing lines of. */ |
72 | ||
0378c332 | 73 | static struct symtab *current_source_symtab; |
c906108c SS |
74 | |
75 | /* Default next line to list. */ | |
76 | ||
0378c332 | 77 | static int current_source_line; |
c906108c | 78 | |
6c95b8df PA |
79 | static struct program_space *current_source_pspace; |
80 | ||
c906108c SS |
81 | /* Default number of lines to print with commands like "list". |
82 | This is based on guessing how many long (i.e. more than chars_per_line | |
83 | characters) lines there will be. To be completely correct, "list" | |
84 | and friends should be rewritten to count characters and see where | |
85 | things are wrapping, but that would be a fair amount of work. */ | |
86 | ||
f43f8571 | 87 | static int lines_to_list = 10; |
920d2a44 AC |
88 | static void |
89 | show_lines_to_list (struct ui_file *file, int from_tty, | |
90 | struct cmd_list_element *c, const char *value) | |
91 | { | |
3e43a32a MS |
92 | fprintf_filtered (file, |
93 | _("Number of source lines gdb " | |
94 | "will list by default is %s.\n"), | |
920d2a44 AC |
95 | value); |
96 | } | |
c906108c | 97 | |
1b56eb55 JK |
98 | /* Possible values of 'set filename-display'. */ |
99 | static const char filename_display_basename[] = "basename"; | |
100 | static const char filename_display_relative[] = "relative"; | |
101 | static const char filename_display_absolute[] = "absolute"; | |
102 | ||
103 | static const char *const filename_display_kind_names[] = { | |
104 | filename_display_basename, | |
105 | filename_display_relative, | |
106 | filename_display_absolute, | |
107 | NULL | |
108 | }; | |
109 | ||
110 | static const char *filename_display_string = filename_display_relative; | |
111 | ||
112 | static void | |
113 | show_filename_display_string (struct ui_file *file, int from_tty, | |
114 | struct cmd_list_element *c, const char *value) | |
115 | { | |
116 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
117 | } | |
118 | ||
c906108c SS |
119 | /* Line number of last line printed. Default for various commands. |
120 | current_source_line is usually, but not always, the same as this. */ | |
121 | ||
122 | static int last_line_listed; | |
123 | ||
5166082f PA |
124 | /* First line number listed by last listing command. If 0, then no |
125 | source lines have yet been listed since the last time the current | |
126 | source line was changed. */ | |
c906108c SS |
127 | |
128 | static int first_line_listed; | |
129 | ||
130 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 131 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
132 | |
133 | static struct symtab *last_source_visited = NULL; | |
134 | static int last_source_error = 0; | |
c906108c | 135 | \f |
0378c332 FN |
136 | /* Return the first line listed by print_source_lines. |
137 | Used by command interpreters to request listing from | |
c378eb4e | 138 | a previous point. */ |
0378c332 FN |
139 | |
140 | int | |
141 | get_first_line_listed (void) | |
142 | { | |
143 | return first_line_listed; | |
144 | } | |
145 | ||
5166082f PA |
146 | /* Clear line listed range. This makes the next "list" center the |
147 | printed source lines around the current source line. */ | |
148 | ||
149 | static void | |
150 | clear_lines_listed_range (void) | |
151 | { | |
152 | first_line_listed = 0; | |
153 | last_line_listed = 0; | |
154 | } | |
155 | ||
0378c332 FN |
156 | /* Return the default number of lines to print with commands like the |
157 | cli "list". The caller of print_source_lines must use this to | |
158 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 159 | as it does not automatically use this value. */ |
0378c332 FN |
160 | |
161 | int | |
162 | get_lines_to_list (void) | |
163 | { | |
164 | return lines_to_list; | |
165 | } | |
166 | ||
167 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 168 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
169 | |
170 | struct symtab_and_line | |
171 | get_current_source_symtab_and_line (void) | |
172 | { | |
51abb421 | 173 | symtab_and_line cursal; |
0378c332 | 174 | |
6c95b8df | 175 | cursal.pspace = current_source_pspace; |
0378c332 FN |
176 | cursal.symtab = current_source_symtab; |
177 | cursal.line = current_source_line; | |
53cb0458 FN |
178 | cursal.pc = 0; |
179 | cursal.end = 0; | |
0378c332 FN |
180 | |
181 | return cursal; | |
182 | } | |
183 | ||
53cb0458 FN |
184 | /* If the current source file for listing is not set, try and get a default. |
185 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 186 | It may err out if a default cannot be determined. |
53cb0458 FN |
187 | We must be cautious about where it is called, as it can recurse as the |
188 | process of determining a new default may call the caller! | |
189 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 190 | we have without erroring out or trying to get a default. */ |
0378c332 | 191 | |
53cb0458 FN |
192 | void |
193 | set_default_source_symtab_and_line (void) | |
0378c332 | 194 | { |
0378c332 | 195 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 196 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 197 | |
c378eb4e | 198 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
199 | if (current_source_symtab == 0) |
200 | select_source_symtab (0); | |
0378c332 FN |
201 | } |
202 | ||
203 | /* Return the current default file for listing and next line to list | |
204 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 205 | and set the current default to whatever is in SAL. |
c378eb4e | 206 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
207 | |
208 | struct symtab_and_line | |
51abb421 | 209 | set_current_source_symtab_and_line (const symtab_and_line &sal) |
0378c332 | 210 | { |
51abb421 | 211 | symtab_and_line cursal; |
6c95b8df PA |
212 | |
213 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
214 | cursal.symtab = current_source_symtab; |
215 | cursal.line = current_source_line; | |
6c95b8df PA |
216 | cursal.pc = 0; |
217 | cursal.end = 0; | |
0378c332 | 218 | |
51abb421 PA |
219 | current_source_pspace = sal.pspace; |
220 | current_source_symtab = sal.symtab; | |
221 | current_source_line = sal.line; | |
6c95b8df | 222 | |
5166082f PA |
223 | /* Force the next "list" to center around the current line. */ |
224 | clear_lines_listed_range (); | |
225 | ||
0378c332 FN |
226 | return cursal; |
227 | } | |
228 | ||
c378eb4e | 229 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
230 | |
231 | void | |
232 | clear_current_source_symtab_and_line (void) | |
233 | { | |
234 | current_source_symtab = 0; | |
235 | current_source_line = 0; | |
236 | } | |
c5aa993b | 237 | |
c906108c SS |
238 | /* Set the source file default for the "list" command to be S. |
239 | ||
240 | If S is NULL, and we don't have a default, find one. This | |
241 | should only be called when the user actually tries to use the | |
242 | default, since we produce an error if we can't find a reasonable | |
243 | default. Also, since this can cause symbols to be read, doing it | |
244 | before we need to would make things slower than necessary. */ | |
245 | ||
246 | void | |
aa1ee363 | 247 | select_source_symtab (struct symtab *s) |
c906108c | 248 | { |
c906108c | 249 | struct objfile *ofp; |
43f3e411 | 250 | struct compunit_symtab *cu; |
c5aa993b | 251 | |
c906108c SS |
252 | if (s) |
253 | { | |
254 | current_source_symtab = s; | |
255 | current_source_line = 1; | |
6c95b8df | 256 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
257 | return; |
258 | } | |
259 | ||
260 | if (current_source_symtab) | |
261 | return; | |
262 | ||
263 | /* Make the default place to list be the function `main' | |
264 | if one exists. */ | |
d12307c1 | 265 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0).symbol) |
c906108c | 266 | { |
6c5b2ebe PA |
267 | std::vector<symtab_and_line> sals |
268 | = decode_line_with_current_source (main_name (), | |
269 | DECODE_LINE_FUNFIRSTLINE); | |
270 | const symtab_and_line &sal = sals[0]; | |
6c95b8df | 271 | current_source_pspace = sal.pspace; |
c906108c | 272 | current_source_symtab = sal.symtab; |
325fac50 | 273 | current_source_line = std::max (sal.line - (lines_to_list - 1), 1); |
c906108c | 274 | if (current_source_symtab) |
c5aa993b | 275 | return; |
c906108c | 276 | } |
c5aa993b | 277 | |
8340a3fb LM |
278 | /* Alright; find the last file in the symtab list (ignoring .h's |
279 | and namespace symtabs). */ | |
c906108c SS |
280 | |
281 | current_source_line = 1; | |
282 | ||
43f3e411 | 283 | ALL_FILETABS (ofp, cu, s) |
c906108c | 284 | { |
712a2e6d DE |
285 | const char *name = s->filename; |
286 | int len = strlen (name); | |
287 | ||
288 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
289 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
c906108c | 290 | { |
712a2e6d DE |
291 | current_source_pspace = current_program_space; |
292 | current_source_symtab = s; | |
c906108c SS |
293 | } |
294 | } | |
6c95b8df | 295 | |
c906108c SS |
296 | if (current_source_symtab) |
297 | return; | |
298 | ||
6c95b8df | 299 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
300 | { |
301 | if (ofp->sf) | |
302 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
303 | if (s) | |
304 | current_source_symtab = s; | |
305 | } | |
c906108c SS |
306 | if (current_source_symtab) |
307 | return; | |
308 | ||
8a3fe4f8 | 309 | error (_("Can't find a default source file")); |
c906108c SS |
310 | } |
311 | \f | |
99e7ae30 DE |
312 | /* Handler for "set directories path-list" command. |
313 | "set dir mumble" doesn't prepend paths, it resets the entire | |
314 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
315 | ||
316 | static void | |
eb4c3f4a TT |
317 | set_directories_command (const char *args, |
318 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
319 | { |
320 | /* This is the value that was set. | |
321 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
322 | char *set_path = source_path; | |
323 | ||
324 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
325 | the list by calling init_source_path. If they appear earlier in | |
326 | SET_PATH then mod_path will move them appropriately. | |
327 | mod_path will also remove duplicates. */ | |
328 | init_source_path (); | |
329 | if (*set_path != '\0') | |
330 | mod_path (set_path, &source_path); | |
331 | ||
332 | xfree (set_path); | |
333 | } | |
334 | ||
335 | /* Print the list of source directories. | |
336 | This is used by the "ld" command, so it has the signature of a command | |
337 | function. */ | |
338 | ||
c906108c | 339 | static void |
99e7ae30 | 340 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
341 | { |
342 | puts_filtered ("Source directories searched: "); | |
343 | puts_filtered (source_path); | |
344 | puts_filtered ("\n"); | |
345 | } | |
346 | ||
99e7ae30 DE |
347 | /* Handler for "show directories" command. */ |
348 | ||
349 | static void | |
350 | show_directories_command (struct ui_file *file, int from_tty, | |
351 | struct cmd_list_element *c, const char *value) | |
352 | { | |
353 | show_directories_1 (NULL, from_tty); | |
354 | } | |
355 | ||
00174a86 TT |
356 | /* Forget line positions and file names for the symtabs in a |
357 | particular objfile. */ | |
358 | ||
359 | void | |
360 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
361 | { | |
43f3e411 | 362 | struct compunit_symtab *cu; |
00174a86 TT |
363 | struct symtab *s; |
364 | ||
43f3e411 | 365 | ALL_OBJFILE_FILETABS (objfile, cu, s) |
00174a86 TT |
366 | { |
367 | if (s->line_charpos != NULL) | |
368 | { | |
369 | xfree (s->line_charpos); | |
370 | s->line_charpos = NULL; | |
371 | } | |
372 | if (s->fullname != NULL) | |
373 | { | |
374 | xfree (s->fullname); | |
375 | s->fullname = NULL; | |
376 | } | |
00174a86 | 377 | } |
6f809020 DE |
378 | |
379 | if (objfile->sf) | |
380 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
381 | } |
382 | ||
c906108c SS |
383 | /* Forget what we learned about line positions in source files, and |
384 | which directories contain them; must check again now since files | |
385 | may be found in a different directory now. */ | |
386 | ||
387 | void | |
fba45db2 | 388 | forget_cached_source_info (void) |
c906108c | 389 | { |
6c95b8df | 390 | struct program_space *pspace; |
52f0bd74 | 391 | struct objfile *objfile; |
c906108c | 392 | |
6c95b8df PA |
393 | ALL_PSPACES (pspace) |
394 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 395 | { |
00174a86 | 396 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 397 | } |
c4e86dd4 DJ |
398 | |
399 | last_source_visited = NULL; | |
c906108c SS |
400 | } |
401 | ||
402 | void | |
fba45db2 | 403 | init_source_path (void) |
c906108c SS |
404 | { |
405 | char buf[20]; | |
406 | ||
08850b56 | 407 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 408 | source_path = xstrdup (buf); |
c906108c SS |
409 | forget_cached_source_info (); |
410 | } | |
411 | ||
412 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 413 | |
28da1647 | 414 | static void |
5fed81ff | 415 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
416 | { |
417 | dont_repeat (); | |
c378eb4e | 418 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
419 | if (dirname == 0) |
420 | { | |
80618b99 | 421 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 422 | { |
b8c9b27d | 423 | xfree (source_path); |
c906108c SS |
424 | init_source_path (); |
425 | } | |
426 | } | |
427 | else | |
428 | { | |
429 | mod_path (dirname, &source_path); | |
c4e86dd4 | 430 | forget_cached_source_info (); |
c906108c SS |
431 | } |
432 | if (from_tty) | |
99e7ae30 | 433 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
434 | } |
435 | ||
13d35ae5 AS |
436 | /* Add a path given with the -d command line switch. |
437 | This will not be quoted so we must not treat spaces as separators. */ | |
438 | ||
439 | void | |
5614fb77 | 440 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
441 | { |
442 | add_path (dirname, &source_path, 0); | |
443 | } | |
444 | ||
c906108c SS |
445 | /* Add zero or more directories to the front of an arbitrary path. */ |
446 | ||
447 | void | |
5614fb77 | 448 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
449 | { |
450 | add_path (dirname, which_path, 1); | |
451 | } | |
452 | ||
453 | /* Workhorse of mod_path. Takes an extra argument to determine | |
454 | if dirname should be parsed for separators that indicate multiple | |
455 | directories. This allows for interfaces that pre-parse the dirname | |
456 | and allow specification of traditional separator characters such | |
c378eb4e | 457 | as space or tab. */ |
c04e0a08 JJ |
458 | |
459 | void | |
5614fb77 | 460 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
461 | { |
462 | char *old = *which_path; | |
463 | int prefix = 0; | |
e80aaf61 | 464 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
465 | |
466 | if (dirname == 0) | |
467 | return; | |
468 | ||
13d35ae5 AS |
469 | if (parse_separators) |
470 | { | |
471 | /* This will properly parse the space and tab separators | |
e4ab2fad | 472 | and any quotes that may exist. */ |
773a1edc | 473 | gdb_argv argv (dirname); |
e4ab2fad | 474 | |
773a1edc TT |
475 | for (char *arg : argv) |
476 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
477 | } |
478 | else | |
e80aaf61 | 479 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 480 | |
e80aaf61 SM |
481 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
482 | ||
483 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) | |
c906108c | 484 | { |
e80aaf61 | 485 | char *name = name_up.get (); |
aa1ee363 | 486 | char *p; |
c906108c SS |
487 | struct stat st; |
488 | ||
e4ab2fad JK |
489 | /* Spaces and tabs will have been removed by buildargv(). |
490 | NAME is the start of the directory. | |
491 | P is the '\0' following the end. */ | |
492 | p = name + strlen (name); | |
13d35ae5 AS |
493 | |
494 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 495 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 496 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 497 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 498 | #endif |
13d35ae5 | 499 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 500 | /* Sigh. "foo/" => "foo" */ |
c906108c | 501 | --p; |
c906108c SS |
502 | *p = '\0'; |
503 | ||
7be570e7 | 504 | while (p > name && p[-1] == '.') |
c906108c SS |
505 | { |
506 | if (p - name == 1) | |
507 | { | |
508 | /* "." => getwd (). */ | |
509 | name = current_directory; | |
510 | goto append; | |
511 | } | |
fe4e3eb8 | 512 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
513 | { |
514 | if (p - name == 2) | |
515 | { | |
516 | /* "/." => "/". */ | |
517 | *--p = '\0'; | |
518 | goto append; | |
519 | } | |
520 | else | |
521 | { | |
522 | /* "...foo/." => "...foo". */ | |
523 | p -= 2; | |
524 | *p = '\0'; | |
525 | continue; | |
526 | } | |
527 | } | |
528 | else | |
529 | break; | |
530 | } | |
531 | ||
532 | if (name[0] == '~') | |
533 | name = tilde_expand (name); | |
c3690141 | 534 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 535 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 536 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 537 | #endif |
fe4e3eb8 | 538 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 539 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
540 | else |
541 | name = savestring (name, p - name); | |
b8c9b27d | 542 | make_cleanup (xfree, name); |
c906108c SS |
543 | |
544 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
545 | if (name[0] != '$') |
546 | { | |
547 | /* These are warnings, not errors, since we don't want a | |
548 | non-existent directory in a .gdbinit file to stop processing | |
549 | of the .gdbinit file. | |
550 | ||
551 | Whether they get added to the path is more debatable. Current | |
552 | answer is yes, in case the user wants to go make the directory | |
553 | or whatever. If the directory continues to not exist/not be | |
554 | a directory/etc, then having them in the path should be | |
555 | harmless. */ | |
556 | if (stat (name, &st) < 0) | |
557 | { | |
558 | int save_errno = errno; | |
433759f7 | 559 | |
c5aa993b JM |
560 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
561 | print_sys_errmsg (name, save_errno); | |
562 | } | |
563 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 564 | warning (_("%s is not a directory."), name); |
c5aa993b | 565 | } |
c906108c SS |
566 | |
567 | append: | |
568 | { | |
aa1ee363 | 569 | unsigned int len = strlen (name); |
5ee4ed9f | 570 | char tinybuf[2]; |
c906108c SS |
571 | |
572 | p = *which_path; | |
5e3f4fab | 573 | while (1) |
c906108c | 574 | { |
5e3f4fab EBM |
575 | /* FIXME: we should use realpath() or its work-alike |
576 | before comparing. Then all the code above which | |
577 | removes excess slashes and dots could simply go away. */ | |
578 | if (!filename_ncmp (p, name, len) | |
579 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
580 | { | |
581 | /* Found it in the search path, remove old copy. */ | |
582 | if (p > *which_path) | |
583 | { | |
584 | /* Back over leading separator. */ | |
585 | p--; | |
586 | } | |
587 | if (prefix > p - *which_path) | |
588 | { | |
589 | /* Same dir twice in one cmd. */ | |
590 | goto skip_dup; | |
591 | } | |
592 | /* Copy from next '\0' or ':'. */ | |
593 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
594 | } | |
595 | p = strchr (p, DIRNAME_SEPARATOR); | |
596 | if (p != 0) | |
597 | ++p; | |
598 | else | |
599 | break; | |
c906108c | 600 | } |
c906108c | 601 | |
5ee4ed9f JK |
602 | tinybuf[0] = DIRNAME_SEPARATOR; |
603 | tinybuf[1] = '\0'; | |
c906108c | 604 | |
5ee4ed9f JK |
605 | /* If we have already tacked on a name(s) in this command, |
606 | be sure they stay on the front as we tack on some | |
607 | more. */ | |
608 | if (prefix) | |
609 | { | |
610 | char *temp, c; | |
611 | ||
612 | c = old[prefix]; | |
613 | old[prefix] = '\0'; | |
614 | temp = concat (old, tinybuf, name, (char *)NULL); | |
615 | old[prefix] = c; | |
616 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
617 | prefix = strlen (temp); | |
618 | xfree (temp); | |
619 | } | |
620 | else | |
621 | { | |
622 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
623 | old, (char *)NULL); | |
624 | prefix = strlen (name); | |
c906108c | 625 | } |
5ee4ed9f JK |
626 | xfree (old); |
627 | old = *which_path; | |
c906108c | 628 | } |
82ae4854 | 629 | skip_dup: |
b27cf2b3 | 630 | ; |
c5aa993b | 631 | } |
e4ab2fad JK |
632 | |
633 | do_cleanups (back_to); | |
c906108c SS |
634 | } |
635 | ||
636 | ||
637 | static void | |
1d12d88f | 638 | info_source_command (const char *ignore, int from_tty) |
c906108c | 639 | { |
52f0bd74 | 640 | struct symtab *s = current_source_symtab; |
b6577aab | 641 | struct compunit_symtab *cust; |
c906108c SS |
642 | |
643 | if (!s) | |
644 | { | |
a3f17187 | 645 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
646 | return; |
647 | } | |
b6577aab DE |
648 | |
649 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 650 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
651 | if (SYMTAB_DIRNAME (s) != NULL) |
652 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 653 | if (s->fullname) |
a3f17187 | 654 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 655 | if (s->nlines) |
a3f17187 | 656 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
657 | s->nlines == 1 ? "" : "s"); |
658 | ||
a3f17187 | 659 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
660 | printf_filtered (_("Producer is %s.\n"), |
661 | COMPUNIT_PRODUCER (cust) != NULL | |
662 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 663 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 664 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 665 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 666 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 667 | ? "Includes" : "Does not include"); |
c906108c | 668 | } |
c5aa993b | 669 | \f |
c906108c | 670 | |
c906108c | 671 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
672 | using mode MODE in the calls to open. You cannot use this function to |
673 | create files (O_CREAT). | |
c906108c | 674 | |
014d698b EZ |
675 | OPTS specifies the function behaviour in specific cases. |
676 | ||
677 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 678 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
679 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
680 | disables searching of the path (this is so that "exec-file ./foo" or | |
681 | "symbol-file ./foo" insures that you get that particular version of | |
682 | foo or an error message). | |
c906108c | 683 | |
014d698b EZ |
684 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
685 | searched in path (we usually want this for source files but not for | |
686 | executables). | |
687 | ||
e7a8479f | 688 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 689 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
690 | have to take special pains to avoid doubling the "/" between the directory |
691 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
692 | source file name!!! | |
693 | ||
492c0ab7 JK |
694 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
695 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
696 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
697 | effect. | |
1f0c4988 | 698 | |
c906108c SS |
699 | If a file is found, return the descriptor. |
700 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
701 | ||
702 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 703 | >>>> eg executable, non-directory. */ |
c906108c | 704 | int |
24b9144d | 705 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 706 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 707 | { |
52f0bd74 AC |
708 | int fd; |
709 | char *filename; | |
c906108c | 710 | int alloclen; |
79b289e2 PA |
711 | /* The errno set for the last name we tried to open (and |
712 | failed). */ | |
713 | int last_errno = 0; | |
e80aaf61 | 714 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 715 | |
fbdebf46 JK |
716 | /* The open syscall MODE parameter is not specified. */ |
717 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
718 | gdb_assert (string != NULL); |
719 | ||
720 | /* A file with an empty name cannot possibly exist. Report a failure | |
721 | without further checking. | |
722 | ||
723 | This is an optimization which also defends us against buggy | |
724 | implementations of the "stat" function. For instance, we have | |
725 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
726 | when the debugger is started with an empty argument. */ | |
727 | if (string[0] == '\0') | |
728 | { | |
729 | errno = ENOENT; | |
730 | return -1; | |
731 | } | |
fbdebf46 | 732 | |
c906108c SS |
733 | if (!path) |
734 | path = "."; | |
735 | ||
c906108c | 736 | mode |= O_BINARY; |
c906108c | 737 | |
014d698b | 738 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 739 | { |
a55411b9 | 740 | int i, reg_file_errno; |
072b1022 | 741 | |
a55411b9 | 742 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 743 | { |
224c3ddb | 744 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 745 | strcpy (filename, string); |
614c279d | 746 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
747 | if (fd >= 0) |
748 | goto done; | |
a55411b9 | 749 | last_errno = errno; |
072b1022 DJ |
750 | } |
751 | else | |
3f565f1e DJ |
752 | { |
753 | filename = NULL; | |
754 | fd = -1; | |
a55411b9 | 755 | last_errno = reg_file_errno; |
3f565f1e | 756 | } |
072b1022 | 757 | |
014d698b EZ |
758 | if (!(opts & OPF_SEARCH_IN_PATH)) |
759 | for (i = 0; string[i]; i++) | |
760 | if (IS_DIR_SEPARATOR (string[i])) | |
761 | goto done; | |
c906108c SS |
762 | } |
763 | ||
e6d9b9c2 DE |
764 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
765 | if (HAS_DRIVE_SPEC (string)) | |
766 | string = STRIP_DRIVE_SPEC (string); | |
767 | ||
c378eb4e | 768 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
769 | while (IS_DIR_SEPARATOR(string[0])) |
770 | string++; | |
771 | ||
c906108c | 772 | /* ./foo => foo */ |
fe4e3eb8 | 773 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
774 | string += 2; |
775 | ||
776 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 777 | filename = (char *) alloca (alloclen); |
c906108c | 778 | fd = -1; |
79b289e2 | 779 | last_errno = ENOENT; |
e4ab2fad JK |
780 | |
781 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 782 | |
e80aaf61 | 783 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 784 | { |
e80aaf61 | 785 | char *dir = dir_up.get (); |
e4ab2fad | 786 | size_t len = strlen (dir); |
a55411b9 | 787 | int reg_file_errno; |
c906108c | 788 | |
e4ab2fad | 789 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
790 | { |
791 | /* Name is $cwd -- insert current directory name instead. */ | |
792 | int newlen; | |
793 | ||
c378eb4e | 794 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
795 | len = strlen (current_directory); |
796 | newlen = len + strlen (string) + 2; | |
797 | if (newlen > alloclen) | |
798 | { | |
799 | alloclen = newlen; | |
224c3ddb | 800 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
801 | } |
802 | strcpy (filename, current_directory); | |
803 | } | |
ebd86fb5 TJB |
804 | else if (strchr(dir, '~')) |
805 | { | |
806 | /* See whether we need to expand the tilde. */ | |
807 | int newlen; | |
ebd86fb5 | 808 | |
ee0c3293 | 809 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
810 | |
811 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 812 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
813 | newlen = len + strlen (string) + 2; |
814 | if (newlen > alloclen) | |
815 | { | |
816 | alloclen = newlen; | |
224c3ddb | 817 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 818 | } |
ee0c3293 | 819 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 820 | } |
c5aa993b JM |
821 | else |
822 | { | |
823 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 824 | strcpy (filename, dir); |
08001717 DE |
825 | |
826 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
827 | don't have enough information to expand it. The user *could* | |
828 | have an actual directory named '$cdir' but handling that would | |
829 | be confusing, it would mean different things in different | |
830 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
831 | We can get $cdir when loading scripts. When loading source files | |
832 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 833 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 834 | continue; |
c906108c | 835 | } |
c906108c | 836 | |
c378eb4e | 837 | /* Remove trailing slashes. */ |
fe4e3eb8 | 838 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
839 | filename[--len] = 0; |
840 | ||
c5aa993b | 841 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
842 | strcat (filename, string); |
843 | ||
a55411b9 | 844 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 845 | { |
614c279d | 846 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
847 | if (fd >= 0) |
848 | break; | |
79b289e2 | 849 | last_errno = errno; |
5e987968 | 850 | } |
a55411b9 DE |
851 | else |
852 | last_errno = reg_file_errno; | |
c906108c SS |
853 | } |
854 | ||
c5aa993b | 855 | done: |
c906108c SS |
856 | if (filename_opened) |
857 | { | |
f5b95b50 | 858 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 859 | if (fd < 0) |
e0cc99a6 | 860 | filename_opened->reset (NULL); |
04affae3 | 861 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 862 | *filename_opened = gdb_realpath (filename); |
c906108c | 863 | else |
e0cc99a6 | 864 | *filename_opened = gdb_abspath (filename); |
c906108c | 865 | } |
c906108c | 866 | |
79b289e2 | 867 | errno = last_errno; |
c906108c SS |
868 | return fd; |
869 | } | |
870 | ||
c5aa993b | 871 | |
c906108c SS |
872 | /* This is essentially a convenience, for clients that want the behaviour |
873 | of openp, using source_path, but that really don't want the file to be | |
874 | opened but want instead just to know what the full pathname is (as | |
875 | qualified against source_path). | |
876 | ||
877 | The current working directory is searched first. | |
878 | ||
879 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
880 | set to the fully-qualified pathname. | |
881 | ||
5e987968 | 882 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 883 | int |
e0cc99a6 TT |
884 | source_full_path_of (const char *filename, |
885 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 886 | { |
c5aa993b | 887 | int fd; |
c906108c | 888 | |
492c0ab7 JK |
889 | fd = openp (source_path, |
890 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
891 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
892 | if (fd < 0) |
893 | { | |
e0cc99a6 | 894 | full_pathname->reset (NULL); |
c906108c SS |
895 | return 0; |
896 | } | |
897 | ||
898 | close (fd); | |
899 | return 1; | |
900 | } | |
901 | ||
2f61ca93 JB |
902 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
903 | applied to PATH. */ | |
904 | ||
905 | static int | |
906 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
907 | const char *path) | |
908 | { | |
909 | const int from_len = strlen (rule->from); | |
910 | const int path_len = strlen (path); | |
2f61ca93 JB |
911 | |
912 | if (path_len < from_len) | |
913 | return 0; | |
914 | ||
915 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 916 | so the path should start with rule->from. */ |
2f61ca93 | 917 | |
486ef3b9 | 918 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
919 | return 0; |
920 | ||
921 | /* Make sure that the region in the path that matches the substitution | |
922 | rule is immediately followed by a directory separator (or the end of | |
923 | string character). */ | |
230cd560 | 924 | |
2f61ca93 JB |
925 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
926 | return 0; | |
927 | ||
928 | return 1; | |
929 | } | |
930 | ||
931 | /* Find the substitute-path rule that applies to PATH and return it. | |
932 | Return NULL if no rule applies. */ | |
933 | ||
934 | static struct substitute_path_rule * | |
935 | get_substitute_path_rule (const char *path) | |
936 | { | |
937 | struct substitute_path_rule *rule = substitute_path_rules; | |
938 | ||
939 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
940 | rule = rule->next; | |
941 | ||
942 | return rule; | |
943 | } | |
944 | ||
945 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
946 | to PATH, then apply it and return the new path. |
947 | ||
2f61ca93 JB |
948 | Return NULL if no substitution rule was specified by the user, |
949 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
950 | |
951 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
952 | rewrite_source_path (const char *path) |
953 | { | |
954 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
955 | char *new_path; | |
956 | int from_len; | |
957 | ||
958 | if (rule == NULL) | |
959 | return NULL; | |
960 | ||
961 | from_len = strlen (rule->from); | |
962 | ||
963 | /* Compute the rewritten path and return it. */ | |
964 | ||
965 | new_path = | |
966 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
967 | strcpy (new_path, rule->to); | |
968 | strcat (new_path, path + from_len); | |
969 | ||
0b581c69 | 970 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
971 | } |
972 | ||
ccefe4c4 | 973 | int |
e2357892 | 974 | find_and_open_source (const char *filename, |
5e987968 | 975 | const char *dirname, |
e0cc99a6 | 976 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
977 | { |
978 | char *path = source_path; | |
31889e00 | 979 | const char *p; |
c906108c | 980 | int result; |
c906108c | 981 | |
c378eb4e | 982 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 983 | |
57c22c6c | 984 | if (*fullname) |
c906108c | 985 | { |
2f61ca93 JB |
986 | /* The user may have requested that source paths be rewritten |
987 | according to substitution rules he provided. If a substitution | |
988 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
989 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
990 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
991 | |
992 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 993 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 994 | |
e0cc99a6 | 995 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 996 | if (result >= 0) |
bc3aa6c3 | 997 | { |
e0cc99a6 | 998 | *fullname = gdb_realpath (fullname->get ()); |
bc3aa6c3 DE |
999 | return result; |
1000 | } | |
1001 | ||
c378eb4e | 1002 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1003 | fullname->reset (NULL); |
c906108c SS |
1004 | } |
1005 | ||
0b581c69 | 1006 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1007 | if (dirname != NULL) |
c906108c | 1008 | { |
2f61ca93 JB |
1009 | /* If necessary, rewrite the compilation directory name according |
1010 | to the source path substitution rules specified by the user. */ | |
1011 | ||
0b581c69 | 1012 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1013 | |
1014 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1015 | dirname = rewritten_dirname.get (); |
1016 | ||
c378eb4e MS |
1017 | /* Replace a path entry of $cdir with the compilation directory |
1018 | name. */ | |
c906108c SS |
1019 | #define cdir_len 5 |
1020 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1021 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1022 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1023 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1024 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1025 | { |
1026 | int len; | |
1027 | ||
1028 | path = (char *) | |
57c22c6c | 1029 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1030 | len = p - source_path; |
c5aa993b | 1031 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1032 | strcpy (path + len, dirname); /* new stuff */ |
1033 | strcat (path + len, source_path + len + cdir_len); /* After | |
1034 | $cdir */ | |
c906108c SS |
1035 | } |
1036 | } | |
8da2a1df | 1037 | |
0b581c69 | 1038 | gdb::unique_xmalloc_ptr<char> rewritten_filename; |
8da2a1df | 1039 | if (IS_ABSOLUTE_PATH (filename)) |
56163ce1 | 1040 | { |
8da2a1df DJ |
1041 | /* If filename is absolute path, try the source path |
1042 | substitution on it. */ | |
0b581c69 | 1043 | rewritten_filename = rewrite_source_path (filename); |
56163ce1 JB |
1044 | |
1045 | if (rewritten_filename != NULL) | |
0b581c69 | 1046 | filename = rewritten_filename.get (); |
56163ce1 | 1047 | } |
c906108c | 1048 | |
492c0ab7 JK |
1049 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1050 | OPEN_MODE, fullname); | |
c906108c SS |
1051 | if (result < 0) |
1052 | { | |
c378eb4e | 1053 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1054 | p = lbasename (filename); |
1055 | if (p != filename) | |
492c0ab7 JK |
1056 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1057 | OPEN_MODE, fullname); | |
c906108c | 1058 | } |
c906108c | 1059 | |
c906108c SS |
1060 | return result; |
1061 | } | |
1062 | ||
57c22c6c BR |
1063 | /* Open a source file given a symtab S. Returns a file descriptor or |
1064 | negative number for error. | |
1065 | ||
c378eb4e | 1066 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1067 | |
1068 | int | |
1069 | open_source_file (struct symtab *s) | |
1070 | { | |
5e987968 AS |
1071 | if (!s) |
1072 | return -1; | |
57c22c6c | 1073 | |
e0cc99a6 TT |
1074 | gdb::unique_xmalloc_ptr<char> fullname; |
1075 | int fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), &fullname); | |
1076 | s->fullname = fullname.release (); | |
1077 | return fd; | |
57c22c6c BR |
1078 | } |
1079 | ||
1080 | /* Finds the fullname that a symtab represents. | |
c906108c | 1081 | |
f35a17b5 JK |
1082 | This functions finds the fullname and saves it in s->fullname. |
1083 | It will also return the value. | |
57c22c6c BR |
1084 | |
1085 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1086 | the expected fullname is used. Therefore the files does not have to |
1087 | exist. */ | |
256f06f3 | 1088 | |
0b0865da | 1089 | const char * |
57c22c6c | 1090 | symtab_to_fullname (struct symtab *s) |
c906108c | 1091 | { |
256f06f3 DE |
1092 | /* Use cached copy if we have it. |
1093 | We rely on forget_cached_source_info being called appropriately | |
1094 | to handle cases like the file being moved. */ | |
f35a17b5 | 1095 | if (s->fullname == NULL) |
5e987968 | 1096 | { |
e0cc99a6 | 1097 | int fd = open_source_file (s); |
f35a17b5 JK |
1098 | |
1099 | if (fd >= 0) | |
1100 | close (fd); | |
f35a17b5 | 1101 | else |
f0a4b570 | 1102 | { |
0b581c69 | 1103 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1104 | |
1105 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1106 | should report the pathname where GDB tried to find the file. */ | |
1107 | ||
ee6f8984 | 1108 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1109 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1110 | else |
0b581c69 TT |
1111 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1112 | s->filename, (char *) NULL)); | |
f0a4b570 | 1113 | |
0b581c69 | 1114 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1115 | if (s->fullname == NULL) |
0b581c69 | 1116 | s->fullname = fullname.release (); |
f0a4b570 | 1117 | } |
f35a17b5 | 1118 | } |
c906108c | 1119 | |
f35a17b5 | 1120 | return s->fullname; |
57c22c6c | 1121 | } |
1b56eb55 JK |
1122 | |
1123 | /* See commentary in source.h. */ | |
1124 | ||
1125 | const char * | |
1126 | symtab_to_filename_for_display (struct symtab *symtab) | |
1127 | { | |
1128 | if (filename_display_string == filename_display_basename) | |
1129 | return lbasename (symtab->filename); | |
1130 | else if (filename_display_string == filename_display_absolute) | |
1131 | return symtab_to_fullname (symtab); | |
1132 | else if (filename_display_string == filename_display_relative) | |
1133 | return symtab->filename; | |
1134 | else | |
1135 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1136 | } | |
5e987968 | 1137 | \f |
c906108c SS |
1138 | /* Create and initialize the table S->line_charpos that records |
1139 | the positions of the lines in the source file, which is assumed | |
1140 | to be open on descriptor DESC. | |
1141 | All set S->nlines to the number of such lines. */ | |
1142 | ||
1143 | void | |
fba45db2 | 1144 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1145 | { |
1146 | struct stat st; | |
a9abc434 | 1147 | char *p, *end; |
c906108c SS |
1148 | int nlines = 0; |
1149 | int lines_allocated = 1000; | |
1150 | int *line_charpos; | |
1151 | long mtime = 0; | |
1152 | int size; | |
1153 | ||
be8ca11b | 1154 | gdb_assert (s); |
8d749320 | 1155 | line_charpos = XNEWVEC (int, lines_allocated); |
c906108c | 1156 | if (fstat (desc, &st) < 0) |
05cba821 | 1157 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c | 1158 | |
eb822aa6 DE |
1159 | if (SYMTAB_OBJFILE (s) != NULL && SYMTAB_OBJFILE (s)->obfd != NULL) |
1160 | mtime = SYMTAB_OBJFILE (s)->mtime; | |
c906108c | 1161 | else if (exec_bfd) |
c04ea773 | 1162 | mtime = exec_bfd_mtime; |
c906108c SS |
1163 | |
1164 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1165 | warning (_("Source file is more recent than executable.")); |
c906108c | 1166 | |
c906108c | 1167 | { |
c906108c SS |
1168 | /* st_size might be a large type, but we only support source files whose |
1169 | size fits in an int. */ | |
1170 | size = (int) st.st_size; | |
1171 | ||
a9abc434 TT |
1172 | /* Use the heap, not the stack, because this may be pretty large, |
1173 | and we may run into various kinds of limits on stack size. */ | |
1174 | gdb::def_vector<char> data (size); | |
c906108c SS |
1175 | |
1176 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
a9abc434 | 1177 | size = myread (desc, data.data (), size); |
c906108c | 1178 | if (size < 0) |
05cba821 | 1179 | perror_with_name (symtab_to_filename_for_display (s)); |
9c3630e9 | 1180 | end = data.data () + size; |
a9abc434 | 1181 | p = &data[0]; |
c906108c SS |
1182 | line_charpos[0] = 0; |
1183 | nlines = 1; | |
1184 | while (p != end) | |
1185 | { | |
1186 | if (*p++ == '\n' | |
c5aa993b | 1187 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1188 | && p != end) |
1189 | { | |
1190 | if (nlines == lines_allocated) | |
1191 | { | |
1192 | lines_allocated *= 2; | |
1193 | line_charpos = | |
0efffb96 AC |
1194 | (int *) xrealloc ((char *) line_charpos, |
1195 | sizeof (int) * lines_allocated); | |
c906108c | 1196 | } |
a9abc434 | 1197 | line_charpos[nlines++] = p - data.data (); |
c906108c SS |
1198 | } |
1199 | } | |
c906108c | 1200 | } |
d4d4db8a | 1201 | |
c906108c SS |
1202 | s->nlines = nlines; |
1203 | s->line_charpos = | |
0efffb96 | 1204 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1205 | |
1206 | } | |
1207 | ||
c906108c | 1208 | \f |
c5aa993b | 1209 | |
c906108c SS |
1210 | /* Get full pathname and line number positions for a symtab. |
1211 | Return nonzero if line numbers may have changed. | |
1212 | Set *FULLNAME to actual name of the file as found by `openp', | |
1213 | or to 0 if the file is not found. */ | |
1214 | ||
1215 | static int | |
fba45db2 | 1216 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1217 | { |
52f0bd74 | 1218 | int desc, linenums_changed = 0; |
9fe4a216 | 1219 | struct cleanup *cleanups; |
c5aa993b | 1220 | |
c906108c SS |
1221 | desc = open_source_file (s); |
1222 | if (desc < 0) | |
1223 | { | |
1224 | if (fullname) | |
1225 | *fullname = NULL; | |
1226 | return 0; | |
c5aa993b | 1227 | } |
9fe4a216 | 1228 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1229 | if (fullname) |
1230 | *fullname = s->fullname; | |
c5aa993b JM |
1231 | if (s->line_charpos == 0) |
1232 | linenums_changed = 1; | |
1233 | if (linenums_changed) | |
1234 | find_source_lines (s, desc); | |
9fe4a216 | 1235 | do_cleanups (cleanups); |
c906108c SS |
1236 | return linenums_changed; |
1237 | } | |
1238 | ||
1239 | /* Print text describing the full name of the source file S | |
1240 | and the line number LINE and its corresponding character position. | |
1241 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1242 | can easily find it. | |
1243 | ||
1244 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1245 | ||
1246 | Return 1 if successful, 0 if could not find the file. */ | |
1247 | ||
1248 | int | |
fba45db2 KB |
1249 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1250 | CORE_ADDR pc) | |
c906108c SS |
1251 | { |
1252 | if (s->line_charpos == 0) | |
c5aa993b | 1253 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1254 | if (s->fullname == 0) |
1255 | return 0; | |
1256 | if (line > s->nlines) | |
1257 | /* Don't index off the end of the line_charpos array. */ | |
1258 | return 0; | |
1259 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
eb822aa6 | 1260 | mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), pc); |
c906108c SS |
1261 | |
1262 | current_source_line = line; | |
c906108c | 1263 | current_source_symtab = s; |
5166082f | 1264 | clear_lines_listed_range (); |
c906108c SS |
1265 | return 1; |
1266 | } | |
c906108c | 1267 | \f |
c5aa993b | 1268 | |
c906108c | 1269 | /* Print source lines from the file of symtab S, |
c378eb4e | 1270 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1271 | |
1272 | static void | |
dfaae886 | 1273 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1274 | print_source_lines_flags flags) |
c906108c | 1275 | { |
52f0bd74 AC |
1276 | int c; |
1277 | int desc; | |
f4dfd9c0 | 1278 | int noprint = 0; |
c906108c | 1279 | int nlines = stopline - line; |
79a45e25 | 1280 | struct ui_out *uiout = current_uiout; |
c906108c | 1281 | |
c378eb4e | 1282 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1283 | current_source_symtab = s; |
1284 | current_source_line = line; | |
1285 | first_line_listed = line; | |
1286 | ||
3e43a32a | 1287 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1288 | number. */ |
112e8700 | 1289 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1290 | { |
c378eb4e | 1291 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1292 | if ((s != last_source_visited) || (!last_source_error)) |
1293 | { | |
1294 | last_source_visited = s; | |
1295 | desc = open_source_file (s); | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | desc = last_source_error; | |
dfaae886 | 1300 | flags |= PRINT_SOURCE_LINES_NOERROR; |
c5aa993b | 1301 | } |
8b93c638 JM |
1302 | } |
1303 | else | |
1304 | { | |
f4dfd9c0 | 1305 | desc = last_source_error; |
8d297bbf | 1306 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1307 | noprint = 1; |
8b93c638 | 1308 | } |
c906108c | 1309 | |
f4dfd9c0 | 1310 | if (desc < 0 || noprint) |
c906108c SS |
1311 | { |
1312 | last_source_error = desc; | |
1313 | ||
dfaae886 | 1314 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1315 | { |
05cba821 JK |
1316 | const char *filename = symtab_to_filename_for_display (s); |
1317 | int len = strlen (filename) + 100; | |
224c3ddb | 1318 | char *name = (char *) alloca (len); |
08850b56 | 1319 | |
05cba821 | 1320 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1321 | print_sys_errmsg (name, errno); |
1322 | } | |
1323 | else | |
fc0ae648 | 1324 | { |
112e8700 SM |
1325 | uiout->field_int ("line", line); |
1326 | uiout->text ("\tin "); | |
56d397a3 | 1327 | |
23eb71e4 JK |
1328 | /* CLI expects only the "file" field. TUI expects only the |
1329 | "fullname" field (and TUI does break if "file" is printed). | |
1330 | MI expects both fields. ui_source_list is set only for CLI, | |
1331 | not for TUI. */ | |
112e8700 SM |
1332 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
1333 | uiout->field_string ("file", symtab_to_filename_for_display (s)); | |
1334 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) | |
8f1b8b82 JK |
1335 | { |
1336 | const char *s_fullname = symtab_to_fullname (s); | |
1337 | char *local_fullname; | |
1338 | ||
1339 | /* ui_out_field_string may free S_FULLNAME by calling | |
1340 | open_source_file for it again. See e.g., | |
1341 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1342 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1343 | strcpy (local_fullname, s_fullname); |
1344 | ||
112e8700 | 1345 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1346 | } |
23eb71e4 | 1347 | |
112e8700 | 1348 | uiout->text ("\n"); |
fc0ae648 | 1349 | } |
c906108c SS |
1350 | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | last_source_error = 0; | |
1355 | ||
1356 | if (s->line_charpos == 0) | |
1357 | find_source_lines (s, desc); | |
1358 | ||
1359 | if (line < 1 || line > s->nlines) | |
1360 | { | |
1361 | close (desc); | |
8a3fe4f8 | 1362 | error (_("Line number %d out of range; %s has %d lines."), |
05cba821 | 1363 | line, symtab_to_filename_for_display (s), s->nlines); |
c906108c SS |
1364 | } |
1365 | ||
1366 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1367 | { | |
1368 | close (desc); | |
05cba821 | 1369 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1370 | } |
1371 | ||
4a45905b TT |
1372 | gdb_file_up stream (fdopen (desc, FDOPEN_MODE)); |
1373 | clearerr (stream.get ()); | |
c906108c SS |
1374 | |
1375 | while (nlines-- > 0) | |
1376 | { | |
8b93c638 JM |
1377 | char buf[20]; |
1378 | ||
4a45905b | 1379 | c = fgetc (stream.get ()); |
8b93c638 JM |
1380 | if (c == EOF) |
1381 | break; | |
1382 | last_line_listed = current_source_line; | |
4cd29721 MM |
1383 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1384 | { | |
112e8700 SM |
1385 | uiout->text (symtab_to_filename_for_display (s)); |
1386 | uiout->text (":"); | |
4cd29721 | 1387 | } |
08850b56 | 1388 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
112e8700 | 1389 | uiout->text (buf); |
8b93c638 JM |
1390 | do |
1391 | { | |
1392 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1393 | { | |
08850b56 | 1394 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
112e8700 | 1395 | uiout->text (buf); |
8b93c638 JM |
1396 | } |
1397 | else if (c == 0177) | |
112e8700 | 1398 | uiout->text ("^?"); |
8b93c638 JM |
1399 | else if (c == '\r') |
1400 | { | |
1401 | /* Skip a \r character, but only before a \n. */ | |
4a45905b | 1402 | int c1 = fgetc (stream.get ()); |
8b93c638 JM |
1403 | |
1404 | if (c1 != '\n') | |
1405 | printf_filtered ("^%c", c + 0100); | |
1406 | if (c1 != EOF) | |
4a45905b | 1407 | ungetc (c1, stream.get ()); |
8b93c638 | 1408 | } |
8b93c638 JM |
1409 | else |
1410 | { | |
08850b56 | 1411 | xsnprintf (buf, sizeof (buf), "%c", c); |
112e8700 | 1412 | uiout->text (buf); |
8b93c638 JM |
1413 | } |
1414 | } | |
4a45905b | 1415 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1416 | } |
c906108c SS |
1417 | } |
1418 | \f | |
1419 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1420 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1421 | not the command line version, then the source is shown in the source |
c378eb4e | 1422 | window otherwise it is simply printed. */ |
c906108c | 1423 | |
c5aa993b | 1424 | void |
dfaae886 | 1425 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1426 | print_source_lines_flags flags) |
c906108c | 1427 | { |
dfaae886 | 1428 | print_source_lines_base (s, line, stopline, flags); |
c906108c SS |
1429 | } |
1430 | \f | |
c906108c SS |
1431 | /* Print info on range of pc's in a specified line. */ |
1432 | ||
1433 | static void | |
1d12d88f | 1434 | info_line_command (const char *arg, int from_tty) |
c906108c | 1435 | { |
c906108c | 1436 | CORE_ADDR start_pc, end_pc; |
c906108c | 1437 | |
6c5b2ebe PA |
1438 | std::vector<symtab_and_line> decoded_sals; |
1439 | symtab_and_line curr_sal; | |
1440 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1441 | |
1442 | if (arg == 0) | |
1443 | { | |
6c5b2ebe PA |
1444 | curr_sal.symtab = current_source_symtab; |
1445 | curr_sal.pspace = current_program_space; | |
5166082f | 1446 | if (last_line_listed != 0) |
6c5b2ebe | 1447 | curr_sal.line = last_line_listed; |
5166082f | 1448 | else |
6c5b2ebe | 1449 | curr_sal.line = current_source_line; |
5166082f | 1450 | |
6c5b2ebe | 1451 | sals = curr_sal; |
c906108c SS |
1452 | } |
1453 | else | |
1454 | { | |
6c5b2ebe PA |
1455 | decoded_sals = decode_line_with_last_displayed (arg, |
1456 | DECODE_LINE_LIST_MODE); | |
1457 | sals = decoded_sals; | |
c5aa993b | 1458 | |
c906108c SS |
1459 | dont_repeat (); |
1460 | } | |
1461 | ||
1462 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1463 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1464 | for (const auto &sal : sals) |
c906108c | 1465 | { |
f8eba3c6 TT |
1466 | if (sal.pspace != current_program_space) |
1467 | continue; | |
c5aa993b | 1468 | |
c906108c SS |
1469 | if (sal.symtab == 0) |
1470 | { | |
5af949e3 UW |
1471 | struct gdbarch *gdbarch = get_current_arch (); |
1472 | ||
a3f17187 | 1473 | printf_filtered (_("No line number information available")); |
c906108c SS |
1474 | if (sal.pc != 0) |
1475 | { | |
1476 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1477 | user about a source line, at least let them have the symbolic |
1478 | address. */ | |
c906108c SS |
1479 | printf_filtered (" for address "); |
1480 | wrap_here (" "); | |
5af949e3 | 1481 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1482 | } |
1483 | else | |
1484 | printf_filtered ("."); | |
1485 | printf_filtered ("\n"); | |
1486 | } | |
1487 | else if (sal.line > 0 | |
1488 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1489 | { | |
eb822aa6 DE |
1490 | struct gdbarch *gdbarch |
1491 | = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); | |
5af949e3 | 1492 | |
c906108c SS |
1493 | if (start_pc == end_pc) |
1494 | { | |
1495 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1496 | sal.line, |
1497 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1498 | wrap_here (" "); |
1499 | printf_filtered (" is at address "); | |
5af949e3 | 1500 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1501 | wrap_here (" "); |
1502 | printf_filtered (" but contains no code.\n"); | |
1503 | } | |
1504 | else | |
1505 | { | |
1506 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1507 | sal.line, |
1508 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1509 | wrap_here (" "); |
1510 | printf_filtered (" starts at address "); | |
5af949e3 | 1511 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1512 | wrap_here (" "); |
1513 | printf_filtered (" and ends at "); | |
5af949e3 | 1514 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1515 | printf_filtered (".\n"); |
1516 | } | |
1517 | ||
1518 | /* x/i should display this line's code. */ | |
5af949e3 | 1519 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1520 | |
1521 | /* Repeating "info line" should do the following line. */ | |
1522 | last_line_listed = sal.line + 1; | |
1523 | ||
1524 | /* If this is the only line, show the source code. If it could | |
1525 | not find the file, don't do anything special. */ | |
6c5b2ebe | 1526 | if (annotation_level && sals.size () == 1) |
c906108c SS |
1527 | identify_source_line (sal.symtab, sal.line, 0, start_pc); |
1528 | } | |
1529 | else | |
1530 | /* Is there any case in which we get here, and have an address | |
1531 | which the user would want to see? If we have debugging symbols | |
1532 | and no line numbers? */ | |
a3f17187 | 1533 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1534 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1535 | } |
c906108c SS |
1536 | } |
1537 | \f | |
1538 | /* Commands to search the source file for a regexp. */ | |
1539 | ||
c906108c | 1540 | static void |
0b39b52e | 1541 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1542 | { |
52f0bd74 AC |
1543 | int c; |
1544 | int desc; | |
c906108c SS |
1545 | int line; |
1546 | char *msg; | |
9fe4a216 | 1547 | struct cleanup *cleanups; |
c906108c | 1548 | |
c906108c | 1549 | line = last_line_listed + 1; |
c906108c SS |
1550 | |
1551 | msg = (char *) re_comp (regex); | |
1552 | if (msg) | |
8a3fe4f8 | 1553 | error (("%s"), msg); |
c906108c SS |
1554 | |
1555 | if (current_source_symtab == 0) | |
1556 | select_source_symtab (0); | |
1557 | ||
1558 | desc = open_source_file (current_source_symtab); | |
1559 | if (desc < 0) | |
05cba821 | 1560 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1561 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1562 | |
1563 | if (current_source_symtab->line_charpos == 0) | |
1564 | find_source_lines (current_source_symtab, desc); | |
1565 | ||
1566 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1567 | error (_("Expression not found")); |
c906108c SS |
1568 | |
1569 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1570 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1571 | |
9fe4a216 | 1572 | discard_cleanups (cleanups); |
4a45905b TT |
1573 | gdb_file_up stream (fdopen (desc, FDOPEN_MODE)); |
1574 | clearerr (stream.get ()); | |
c5aa993b JM |
1575 | while (1) |
1576 | { | |
1577 | static char *buf = NULL; | |
aa1ee363 | 1578 | char *p; |
c5aa993b JM |
1579 | int cursize, newsize; |
1580 | ||
1581 | cursize = 256; | |
224c3ddb | 1582 | buf = (char *) xmalloc (cursize); |
c5aa993b JM |
1583 | p = buf; |
1584 | ||
4a45905b | 1585 | c = fgetc (stream.get ()); |
c5aa993b JM |
1586 | if (c == EOF) |
1587 | break; | |
1588 | do | |
c906108c | 1589 | { |
c5aa993b JM |
1590 | *p++ = c; |
1591 | if (p - buf == cursize) | |
1592 | { | |
1593 | newsize = cursize + cursize / 2; | |
224c3ddb | 1594 | buf = (char *) xrealloc (buf, newsize); |
c5aa993b JM |
1595 | p = buf + cursize; |
1596 | cursize = newsize; | |
1597 | } | |
c906108c | 1598 | } |
4a45905b | 1599 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1600 | |
7be570e7 JM |
1601 | /* Remove the \r, if any, at the end of the line, otherwise |
1602 | regular expressions that end with $ or \n won't work. */ | |
1603 | if (p - buf > 1 && p[-2] == '\r') | |
1604 | { | |
1605 | p--; | |
1606 | p[-1] = '\n'; | |
1607 | } | |
7be570e7 | 1608 | |
c378eb4e | 1609 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1610 | *p = 0; |
1611 | if (re_exec (buf) > 0) | |
1612 | { | |
c378eb4e | 1613 | /* Match! */ |
c5aa993b | 1614 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1615 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1616 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c5aa993b JM |
1617 | return; |
1618 | } | |
1619 | line++; | |
1620 | } | |
c906108c | 1621 | |
a3f17187 | 1622 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1623 | } |
1624 | ||
c906108c | 1625 | static void |
0b39b52e | 1626 | reverse_search_command (const char *regex, int from_tty) |
c906108c | 1627 | { |
52f0bd74 AC |
1628 | int c; |
1629 | int desc; | |
c906108c SS |
1630 | int line; |
1631 | char *msg; | |
9fe4a216 | 1632 | struct cleanup *cleanups; |
063190b6 | 1633 | |
c906108c | 1634 | line = last_line_listed - 1; |
c906108c SS |
1635 | |
1636 | msg = (char *) re_comp (regex); | |
1637 | if (msg) | |
8a3fe4f8 | 1638 | error (("%s"), msg); |
c906108c SS |
1639 | |
1640 | if (current_source_symtab == 0) | |
1641 | select_source_symtab (0); | |
1642 | ||
1643 | desc = open_source_file (current_source_symtab); | |
1644 | if (desc < 0) | |
05cba821 | 1645 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1646 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1647 | |
1648 | if (current_source_symtab->line_charpos == 0) | |
1649 | find_source_lines (current_source_symtab, desc); | |
1650 | ||
1651 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1652 | error (_("Expression not found")); |
c906108c SS |
1653 | |
1654 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1655 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1656 | |
9fe4a216 | 1657 | discard_cleanups (cleanups); |
4a45905b TT |
1658 | gdb_file_up stream (fdopen (desc, FDOPEN_MODE)); |
1659 | clearerr (stream.get ()); | |
c906108c SS |
1660 | while (line > 1) |
1661 | { | |
c378eb4e MS |
1662 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1663 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1664 | char *p = buf; |
c906108c | 1665 | |
4a45905b | 1666 | c = fgetc (stream.get ()); |
c906108c SS |
1667 | if (c == EOF) |
1668 | break; | |
c5aa993b JM |
1669 | do |
1670 | { | |
1671 | *p++ = c; | |
1672 | } | |
4a45905b | 1673 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1674 | |
7be570e7 JM |
1675 | /* Remove the \r, if any, at the end of the line, otherwise |
1676 | regular expressions that end with $ or \n won't work. */ | |
1677 | if (p - buf > 1 && p[-2] == '\r') | |
1678 | { | |
1679 | p--; | |
1680 | p[-1] = '\n'; | |
1681 | } | |
7be570e7 | 1682 | |
c906108c SS |
1683 | /* We now have a source line in buf; null terminate and match. */ |
1684 | *p = 0; | |
1685 | if (re_exec (buf) > 0) | |
1686 | { | |
c378eb4e | 1687 | /* Match! */ |
c5aa993b | 1688 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1689 | set_internalvar_integer (lookup_internalvar ("_"), line); |
325fac50 | 1690 | current_source_line = std::max (line - lines_to_list / 2, 1); |
c906108c SS |
1691 | return; |
1692 | } | |
1693 | line--; | |
4a45905b TT |
1694 | if (fseek (stream.get (), |
1695 | current_source_symtab->line_charpos[line - 1], 0) < 0) | |
c906108c | 1696 | { |
05cba821 JK |
1697 | const char *filename; |
1698 | ||
05cba821 JK |
1699 | filename = symtab_to_filename_for_display (current_source_symtab); |
1700 | perror_with_name (filename); | |
c906108c SS |
1701 | } |
1702 | } | |
1703 | ||
a3f17187 | 1704 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1705 | return; |
1706 | } | |
2f61ca93 JB |
1707 | |
1708 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1709 | ||
1710 | static void | |
1711 | strip_trailing_directory_separator (char *path) | |
1712 | { | |
1713 | const int last = strlen (path) - 1; | |
1714 | ||
1715 | if (last < 0) | |
1716 | return; /* No stripping is needed if PATH is the empty string. */ | |
1717 | ||
1718 | if (IS_DIR_SEPARATOR (path[last])) | |
1719 | path[last] = '\0'; | |
1720 | } | |
1721 | ||
1722 | /* Return the path substitution rule that matches FROM. | |
1723 | Return NULL if no rule matches. */ | |
1724 | ||
1725 | static struct substitute_path_rule * | |
1726 | find_substitute_path_rule (const char *from) | |
1727 | { | |
1728 | struct substitute_path_rule *rule = substitute_path_rules; | |
1729 | ||
1730 | while (rule != NULL) | |
1731 | { | |
1732 | if (FILENAME_CMP (rule->from, from) == 0) | |
1733 | return rule; | |
1734 | rule = rule->next; | |
1735 | } | |
1736 | ||
1737 | return NULL; | |
1738 | } | |
1739 | ||
1740 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1741 | The new rule will replace FROM into TO. */ | |
1742 | ||
29b0e8a2 | 1743 | void |
2f61ca93 JB |
1744 | add_substitute_path_rule (char *from, char *to) |
1745 | { | |
1746 | struct substitute_path_rule *rule; | |
8d749320 | 1747 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1748 | |
2f61ca93 JB |
1749 | new_rule->from = xstrdup (from); |
1750 | new_rule->to = xstrdup (to); | |
1751 | new_rule->next = NULL; | |
1752 | ||
1753 | /* If the list of rules are empty, then insert the new rule | |
1754 | at the head of the list. */ | |
1755 | ||
1756 | if (substitute_path_rules == NULL) | |
1757 | { | |
1758 | substitute_path_rules = new_rule; | |
1759 | return; | |
1760 | } | |
1761 | ||
1762 | /* Otherwise, skip to the last rule in our list and then append | |
1763 | the new rule. */ | |
1764 | ||
1765 | rule = substitute_path_rules; | |
1766 | while (rule->next != NULL) | |
1767 | rule = rule->next; | |
1768 | ||
1769 | rule->next = new_rule; | |
1770 | } | |
1771 | ||
1772 | /* Remove the given source path substitution rule from the current list | |
1773 | of rules. The memory allocated for that rule is also deallocated. */ | |
1774 | ||
1775 | static void | |
1776 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1777 | { | |
1778 | if (rule == substitute_path_rules) | |
1779 | substitute_path_rules = rule->next; | |
1780 | else | |
1781 | { | |
1782 | struct substitute_path_rule *prev = substitute_path_rules; | |
1783 | ||
1784 | while (prev != NULL && prev->next != rule) | |
1785 | prev = prev->next; | |
1786 | ||
1787 | gdb_assert (prev != NULL); | |
1788 | ||
1789 | prev->next = rule->next; | |
1790 | } | |
1791 | ||
1792 | xfree (rule->from); | |
1793 | xfree (rule->to); | |
1794 | xfree (rule); | |
1795 | } | |
1796 | ||
1797 | /* Implement the "show substitute-path" command. */ | |
1798 | ||
1799 | static void | |
a0d65762 | 1800 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1801 | { |
1802 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1803 | char *from = NULL; |
1804 | ||
773a1edc | 1805 | gdb_argv argv (args); |
2f61ca93 JB |
1806 | |
1807 | /* We expect zero or one argument. */ | |
1808 | ||
1809 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1810 | error (_("Too many arguments in command")); | |
1811 | ||
1812 | if (argv != NULL && argv[0] != NULL) | |
1813 | from = argv[0]; | |
1814 | ||
1815 | /* Print the substitution rules. */ | |
1816 | ||
1817 | if (from != NULL) | |
1818 | printf_filtered | |
1819 | (_("Source path substitution rule matching `%s':\n"), from); | |
1820 | else | |
1821 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1822 | ||
1823 | while (rule != NULL) | |
1824 | { | |
1e2ccb61 | 1825 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1826 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1827 | rule = rule->next; | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | /* Implement the "unset substitute-path" command. */ | |
1832 | ||
1833 | static void | |
a0d65762 | 1834 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1835 | { |
1836 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1837 | gdb_argv argv (args); |
2f61ca93 JB |
1838 | char *from = NULL; |
1839 | int rule_found = 0; | |
1840 | ||
1841 | /* This function takes either 0 or 1 argument. */ | |
1842 | ||
1843 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1844 | error (_("Incorrect usage, too many arguments in command")); | |
1845 | ||
1846 | if (argv != NULL && argv[0] != NULL) | |
1847 | from = argv[0]; | |
1848 | ||
1849 | /* If the user asked for all the rules to be deleted, ask him | |
1850 | to confirm and give him a chance to abort before the action | |
1851 | is performed. */ | |
1852 | ||
1853 | if (from == NULL | |
1854 | && !query (_("Delete all source path substitution rules? "))) | |
1855 | error (_("Canceled")); | |
1856 | ||
1857 | /* Delete the rule matching the argument. No argument means that | |
1858 | all rules should be deleted. */ | |
1859 | ||
1860 | while (rule != NULL) | |
1861 | { | |
1862 | struct substitute_path_rule *next = rule->next; | |
1863 | ||
1864 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1865 | { | |
1866 | delete_substitute_path_rule (rule); | |
1867 | rule_found = 1; | |
1868 | } | |
1869 | ||
1870 | rule = next; | |
1871 | } | |
1872 | ||
1873 | /* If the user asked for a specific rule to be deleted but | |
1874 | we could not find it, then report an error. */ | |
1875 | ||
1876 | if (from != NULL && !rule_found) | |
1877 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1878 | |
1879 | forget_cached_source_info (); | |
2f61ca93 JB |
1880 | } |
1881 | ||
1882 | /* Add a new source path substitution rule. */ | |
1883 | ||
1884 | static void | |
a0d65762 | 1885 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1886 | { |
2f61ca93 JB |
1887 | struct substitute_path_rule *rule; |
1888 | ||
773a1edc | 1889 | gdb_argv argv (args); |
2f61ca93 JB |
1890 | |
1891 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1892 | error (_("Incorrect usage, too few arguments in command")); | |
1893 | ||
1894 | if (argv[2] != NULL) | |
1895 | error (_("Incorrect usage, too many arguments in command")); | |
1896 | ||
1897 | if (*(argv[0]) == '\0') | |
1898 | error (_("First argument must be at least one character long")); | |
1899 | ||
1900 | /* Strip any trailing directory separator character in either FROM | |
1901 | or TO. The substitution rule already implicitly contains them. */ | |
1902 | strip_trailing_directory_separator (argv[0]); | |
1903 | strip_trailing_directory_separator (argv[1]); | |
1904 | ||
1905 | /* If a rule with the same "from" was previously defined, then | |
1906 | delete it. This new rule replaces it. */ | |
1907 | ||
1908 | rule = find_substitute_path_rule (argv[0]); | |
1909 | if (rule != NULL) | |
1910 | delete_substitute_path_rule (rule); | |
1911 | ||
1912 | /* Insert the new substitution rule. */ | |
1913 | ||
1914 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1915 | forget_cached_source_info (); |
2f61ca93 JB |
1916 | } |
1917 | ||
c906108c SS |
1918 | \f |
1919 | void | |
fba45db2 | 1920 | _initialize_source (void) |
c906108c SS |
1921 | { |
1922 | struct cmd_list_element *c; | |
433759f7 | 1923 | |
c906108c SS |
1924 | current_source_symtab = 0; |
1925 | init_source_path (); | |
1926 | ||
1927 | /* The intention is to use POSIX Basic Regular Expressions. | |
1928 | Always use the GNU regex routine for consistency across all hosts. | |
1929 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1930 | just an approximation. */ | |
1931 | re_set_syntax (RE_SYNTAX_GREP); | |
1932 | ||
1a966eab AC |
1933 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1934 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1935 | Forget cached info on source file locations and line positions.\n\ |
1936 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1937 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1938 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1939 | &cmdlist); |
1940 | ||
1941 | if (dbx_commands) | |
c5aa993b | 1942 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1943 | |
5ba2abeb | 1944 | set_cmd_completer (c, filename_completer); |
c906108c | 1945 | |
99e7ae30 DE |
1946 | add_setshow_optional_filename_cmd ("directories", |
1947 | class_files, | |
1948 | &source_path, | |
1949 | _("\ | |
1950 | Set the search path for finding source files."), | |
1951 | _("\ | |
1952 | Show the search path for finding source files."), | |
1953 | _("\ | |
c906108c | 1954 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1955 | $cdir in the path means the compilation directory of the source file.\n\ |
1956 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1957 | appending these directories if necessary.\n\ | |
1958 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1959 | set_directories_command, | |
1960 | show_directories_command, | |
1961 | &setlist, &showlist); | |
c906108c | 1962 | |
11db9430 | 1963 | add_info ("source", info_source_command, |
1bedd215 | 1964 | _("Information about the current source file.")); |
c906108c | 1965 | |
11db9430 | 1966 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1967 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1968 | Line can be specified as\n\ |
1969 | LINENUM, to list around that line in current file,\n\ | |
1970 | FILE:LINENUM, to list around that line in that file,\n\ | |
1971 | FUNCTION, to list around beginning of that function,\n\ | |
1972 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1973 | Default is to describe the last source line that was listed.\n\n\ |
1974 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1975 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1976 | The address is also stored as the value of \"$_\".")); |
c906108c | 1977 | |
1bedd215 AC |
1978 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1979 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1980 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1981 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1982 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1983 | |
1bedd215 AC |
1984 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1985 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1986 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1987 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1988 | |
7f7cc265 | 1989 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1990 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1991 | Show number of source lines gdb will list by default."), _("\ |
1992 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1993 | the \"list\" argument explicitly specifies some other number).\n\ | |
1994 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1995 | NULL, |
1996 | show_lines_to_list, | |
1997 | &setlist, &showlist); | |
2f61ca93 JB |
1998 | |
1999 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2000 | _("\ | |
7ef2b397 JB |
2001 | Usage: set substitute-path FROM TO\n\ |
2002 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2003 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2004 | is replaced by the new one."), | |
2005 | &setlist); | |
2f61ca93 JB |
2006 | |
2007 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2008 | _("\ | |
7ef2b397 JB |
2009 | Usage: unset substitute-path [FROM]\n\ |
2010 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2011 | is not specified, all substituting rules are deleted.\n\ | |
2012 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2013 | &unsetlist); |
2014 | ||
2015 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2016 | _("\ |
2017 | Usage: show substitute-path [FROM]\n\ | |
2018 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2019 | is not specified, print all substitution rules."), | |
2f61ca93 | 2020 | &showlist); |
1b56eb55 JK |
2021 | |
2022 | add_setshow_enum_cmd ("filename-display", class_files, | |
2023 | filename_display_kind_names, | |
2024 | &filename_display_string, _("\ | |
2025 | Set how to display filenames."), _("\ | |
2026 | Show how to display filenames."), _("\ | |
2027 | filename-display can be:\n\ | |
2028 | basename - display only basename of a filename\n\ | |
2029 | relative - display a filename relative to the compilation directory\n\ | |
2030 | absolute - display an absolute filename\n\ | |
2031 | By default, relative filenames are displayed."), | |
2032 | NULL, | |
2033 | show_filename_display_string, | |
2034 | &setlist, &showlist); | |
2035 | ||
c906108c | 2036 | } |