Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
3666a048 | 2 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
5af949e3 | 20 | #include "arch-utils.h" |
c906108c SS |
21 | #include "symtab.h" |
22 | #include "expression.h" | |
23 | #include "language.h" | |
24 | #include "command.h" | |
c2c6d25f | 25 | #include "source.h" |
c906108c SS |
26 | #include "gdbcmd.h" |
27 | #include "frame.h" | |
28 | #include "value.h" | |
268a13a5 | 29 | #include "gdbsupport/filestuff.h" |
c906108c SS |
30 | |
31 | #include <sys/types.h> | |
c906108c | 32 | #include <fcntl.h> |
c906108c | 33 | #include "gdbcore.h" |
88987551 | 34 | #include "gdb_regex.h" |
c906108c SS |
35 | #include "symfile.h" |
36 | #include "objfiles.h" | |
37 | #include "annotate.h" | |
38 | #include "gdbtypes.h" | |
c5f0f3d0 | 39 | #include "linespec.h" |
fe4e3eb8 | 40 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 41 | #include "completer.h" |
8b93c638 | 42 | #include "ui-out.h" |
e0eac551 | 43 | #include "readline/tilde.h" |
268a13a5 TT |
44 | #include "gdbsupport/enum-flags.h" |
45 | #include "gdbsupport/scoped_fd.h" | |
325fac50 | 46 | #include <algorithm> |
268a13a5 | 47 | #include "gdbsupport/pathstuff.h" |
62f29fda | 48 | #include "source-cache.h" |
e43b10e1 | 49 | #include "cli/cli-style.h" |
a75cd9a2 | 50 | #include "observable.h" |
0d79cdc4 AM |
51 | #include "build-id.h" |
52 | #include "debuginfod-support.h" | |
c906108c | 53 | |
c906108c SS |
54 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
55 | #define FDOPEN_MODE FOPEN_RB | |
56 | ||
c906108c SS |
57 | /* Path of directories to search for source files. |
58 | Same format as the PATH environment variable's value. */ | |
59 | ||
60 | char *source_path; | |
61 | ||
2f61ca93 JB |
62 | /* Support for source path substitution commands. */ |
63 | ||
64 | struct substitute_path_rule | |
65 | { | |
66 | char *from; | |
67 | char *to; | |
68 | struct substitute_path_rule *next; | |
69 | }; | |
70 | ||
71 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
72 | ||
1dd58850 | 73 | /* An instance of this is attached to each program space. */ |
c906108c | 74 | |
1dd58850 TT |
75 | struct current_source_location |
76 | { | |
a75cd9a2 TT |
77 | public: |
78 | ||
79 | current_source_location () = default; | |
80 | ||
81 | /* Set the value. */ | |
82 | void set (struct symtab *s, int l) | |
83 | { | |
84 | m_symtab = s; | |
85 | m_line = l; | |
86 | gdb::observers::current_source_symtab_and_line_changed.notify (); | |
87 | } | |
88 | ||
89 | /* Get the symtab. */ | |
90 | struct symtab *symtab () const | |
91 | { | |
92 | return m_symtab; | |
93 | } | |
94 | ||
95 | /* Get the line number. */ | |
96 | int line () const | |
97 | { | |
98 | return m_line; | |
99 | } | |
100 | ||
101 | private: | |
102 | ||
1dd58850 TT |
103 | /* Symtab of default file for listing lines of. */ |
104 | ||
a75cd9a2 | 105 | struct symtab *m_symtab = nullptr; |
c906108c | 106 | |
1dd58850 | 107 | /* Default next line to list. */ |
c906108c | 108 | |
a75cd9a2 | 109 | int m_line = 0; |
1dd58850 | 110 | }; |
c906108c | 111 | |
1dd58850 | 112 | static program_space_key<current_source_location> current_source_key; |
6c95b8df | 113 | |
c906108c SS |
114 | /* Default number of lines to print with commands like "list". |
115 | This is based on guessing how many long (i.e. more than chars_per_line | |
116 | characters) lines there will be. To be completely correct, "list" | |
117 | and friends should be rewritten to count characters and see where | |
118 | things are wrapping, but that would be a fair amount of work. */ | |
119 | ||
f43f8571 | 120 | static int lines_to_list = 10; |
920d2a44 AC |
121 | static void |
122 | show_lines_to_list (struct ui_file *file, int from_tty, | |
123 | struct cmd_list_element *c, const char *value) | |
124 | { | |
3e43a32a MS |
125 | fprintf_filtered (file, |
126 | _("Number of source lines gdb " | |
127 | "will list by default is %s.\n"), | |
920d2a44 AC |
128 | value); |
129 | } | |
c906108c | 130 | |
1b56eb55 JK |
131 | /* Possible values of 'set filename-display'. */ |
132 | static const char filename_display_basename[] = "basename"; | |
133 | static const char filename_display_relative[] = "relative"; | |
134 | static const char filename_display_absolute[] = "absolute"; | |
135 | ||
136 | static const char *const filename_display_kind_names[] = { | |
137 | filename_display_basename, | |
138 | filename_display_relative, | |
139 | filename_display_absolute, | |
140 | NULL | |
141 | }; | |
142 | ||
143 | static const char *filename_display_string = filename_display_relative; | |
144 | ||
145 | static void | |
146 | show_filename_display_string (struct ui_file *file, int from_tty, | |
147 | struct cmd_list_element *c, const char *value) | |
148 | { | |
149 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
150 | } | |
151 | ||
c906108c SS |
152 | /* Line number of last line printed. Default for various commands. |
153 | current_source_line is usually, but not always, the same as this. */ | |
154 | ||
155 | static int last_line_listed; | |
156 | ||
5166082f PA |
157 | /* First line number listed by last listing command. If 0, then no |
158 | source lines have yet been listed since the last time the current | |
159 | source line was changed. */ | |
c906108c SS |
160 | |
161 | static int first_line_listed; | |
162 | ||
163 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 164 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
165 | |
166 | static struct symtab *last_source_visited = NULL; | |
b08b16c8 | 167 | static bool last_source_error = false; |
c906108c | 168 | \f |
0378c332 FN |
169 | /* Return the first line listed by print_source_lines. |
170 | Used by command interpreters to request listing from | |
c378eb4e | 171 | a previous point. */ |
0378c332 FN |
172 | |
173 | int | |
174 | get_first_line_listed (void) | |
175 | { | |
176 | return first_line_listed; | |
177 | } | |
178 | ||
5166082f PA |
179 | /* Clear line listed range. This makes the next "list" center the |
180 | printed source lines around the current source line. */ | |
181 | ||
182 | static void | |
183 | clear_lines_listed_range (void) | |
184 | { | |
185 | first_line_listed = 0; | |
186 | last_line_listed = 0; | |
187 | } | |
188 | ||
0378c332 FN |
189 | /* Return the default number of lines to print with commands like the |
190 | cli "list". The caller of print_source_lines must use this to | |
191 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 192 | as it does not automatically use this value. */ |
0378c332 FN |
193 | |
194 | int | |
195 | get_lines_to_list (void) | |
196 | { | |
197 | return lines_to_list; | |
198 | } | |
199 | ||
1dd58850 TT |
200 | /* A helper to return the current source location object for PSPACE, |
201 | creating it if it does not exist. */ | |
202 | ||
203 | static current_source_location * | |
204 | get_source_location (program_space *pspace) | |
205 | { | |
206 | current_source_location *loc | |
207 | = current_source_key.get (pspace); | |
208 | if (loc == nullptr) | |
209 | loc = current_source_key.emplace (pspace); | |
210 | return loc; | |
211 | } | |
212 | ||
0378c332 | 213 | /* Return the current source file for listing and next line to list. |
c378eb4e | 214 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
215 | |
216 | struct symtab_and_line | |
217 | get_current_source_symtab_and_line (void) | |
218 | { | |
51abb421 | 219 | symtab_and_line cursal; |
1dd58850 | 220 | current_source_location *loc = get_source_location (current_program_space); |
0378c332 | 221 | |
1dd58850 | 222 | cursal.pspace = current_program_space; |
a75cd9a2 TT |
223 | cursal.symtab = loc->symtab (); |
224 | cursal.line = loc->line (); | |
53cb0458 FN |
225 | cursal.pc = 0; |
226 | cursal.end = 0; | |
0378c332 FN |
227 | |
228 | return cursal; | |
229 | } | |
230 | ||
53cb0458 FN |
231 | /* If the current source file for listing is not set, try and get a default. |
232 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 233 | It may err out if a default cannot be determined. |
53cb0458 FN |
234 | We must be cautious about where it is called, as it can recurse as the |
235 | process of determining a new default may call the caller! | |
236 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 237 | we have without erroring out or trying to get a default. */ |
0378c332 | 238 | |
53cb0458 FN |
239 | void |
240 | set_default_source_symtab_and_line (void) | |
0378c332 | 241 | { |
0378c332 | 242 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 243 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 244 | |
c378eb4e | 245 | /* Pull in a current source symtab if necessary. */ |
1dd58850 | 246 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 247 | if (loc->symtab () == nullptr) |
0378c332 | 248 | select_source_symtab (0); |
0378c332 FN |
249 | } |
250 | ||
251 | /* Return the current default file for listing and next line to list | |
252 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 253 | and set the current default to whatever is in SAL. |
c378eb4e | 254 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
255 | |
256 | struct symtab_and_line | |
51abb421 | 257 | set_current_source_symtab_and_line (const symtab_and_line &sal) |
0378c332 | 258 | { |
51abb421 | 259 | symtab_and_line cursal; |
6c95b8df | 260 | |
1dd58850 TT |
261 | current_source_location *loc = get_source_location (sal.pspace); |
262 | ||
263 | cursal.pspace = sal.pspace; | |
a75cd9a2 TT |
264 | cursal.symtab = loc->symtab (); |
265 | cursal.line = loc->line (); | |
6c95b8df PA |
266 | cursal.pc = 0; |
267 | cursal.end = 0; | |
0378c332 | 268 | |
a75cd9a2 | 269 | loc->set (sal.symtab, sal.line); |
6c95b8df | 270 | |
5166082f PA |
271 | /* Force the next "list" to center around the current line. */ |
272 | clear_lines_listed_range (); | |
273 | ||
0378c332 FN |
274 | return cursal; |
275 | } | |
276 | ||
c378eb4e | 277 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
278 | |
279 | void | |
280 | clear_current_source_symtab_and_line (void) | |
281 | { | |
1dd58850 | 282 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 283 | loc->set (nullptr, 0); |
0378c332 | 284 | } |
c5aa993b | 285 | |
583068ca | 286 | /* See source.h. */ |
c906108c SS |
287 | |
288 | void | |
aa1ee363 | 289 | select_source_symtab (struct symtab *s) |
c906108c | 290 | { |
c906108c SS |
291 | if (s) |
292 | { | |
1dd58850 TT |
293 | current_source_location *loc |
294 | = get_source_location (SYMTAB_PSPACE (s)); | |
a75cd9a2 | 295 | loc->set (s, 1); |
c906108c SS |
296 | return; |
297 | } | |
298 | ||
1dd58850 | 299 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 300 | if (loc->symtab () != nullptr) |
c906108c SS |
301 | return; |
302 | ||
303 | /* Make the default place to list be the function `main' | |
304 | if one exists. */ | |
5c281dbb TT |
305 | block_symbol bsym = lookup_symbol (main_name (), 0, VAR_DOMAIN, 0); |
306 | if (bsym.symbol != nullptr && SYMBOL_CLASS (bsym.symbol) == LOC_BLOCK) | |
c906108c | 307 | { |
5c281dbb | 308 | symtab_and_line sal = find_function_start_sal (bsym.symbol, true); |
520596f2 TV |
309 | if (sal.symtab == NULL) |
310 | /* We couldn't find the location of `main', possibly due to missing | |
311 | line number info, fall back to line 1 in the corresponding file. */ | |
312 | loc->set (symbol_symtab (bsym.symbol), 1); | |
313 | else | |
314 | loc->set (sal.symtab, std::max (sal.line - (lines_to_list - 1), 1)); | |
5c281dbb | 315 | return; |
c906108c | 316 | } |
c5aa993b | 317 | |
8340a3fb LM |
318 | /* Alright; find the last file in the symtab list (ignoring .h's |
319 | and namespace symtabs). */ | |
c906108c | 320 | |
a75cd9a2 | 321 | struct symtab *new_symtab = nullptr; |
c906108c | 322 | |
2030c079 | 323 | for (objfile *ofp : current_program_space->objfiles ()) |
c906108c | 324 | { |
b669c953 | 325 | for (compunit_symtab *cu : ofp->compunits ()) |
c906108c | 326 | { |
8b31193a TT |
327 | for (symtab *symtab : compunit_filetabs (cu)) |
328 | { | |
329 | const char *name = symtab->filename; | |
330 | int len = strlen (name); | |
331 | ||
332 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
333 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
a75cd9a2 | 334 | new_symtab = symtab; |
8b31193a | 335 | } |
c906108c SS |
336 | } |
337 | } | |
6c95b8df | 338 | |
a75cd9a2 TT |
339 | loc->set (new_symtab, 1); |
340 | if (new_symtab != nullptr) | |
c906108c SS |
341 | return; |
342 | ||
2030c079 | 343 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
344 | { |
345 | if (objfile->sf) | |
346 | s = objfile->sf->qf->find_last_source_symtab (objfile); | |
347 | if (s) | |
a75cd9a2 TT |
348 | new_symtab = s; |
349 | } | |
350 | if (new_symtab != nullptr) | |
351 | { | |
352 | loc->set (new_symtab,1); | |
353 | return; | |
aed57c53 | 354 | } |
c906108c | 355 | |
8a3fe4f8 | 356 | error (_("Can't find a default source file")); |
c906108c SS |
357 | } |
358 | \f | |
99e7ae30 DE |
359 | /* Handler for "set directories path-list" command. |
360 | "set dir mumble" doesn't prepend paths, it resets the entire | |
361 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
362 | ||
363 | static void | |
eb4c3f4a TT |
364 | set_directories_command (const char *args, |
365 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
366 | { |
367 | /* This is the value that was set. | |
368 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
369 | char *set_path = source_path; | |
370 | ||
371 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
372 | the list by calling init_source_path. If they appear earlier in | |
373 | SET_PATH then mod_path will move them appropriately. | |
374 | mod_path will also remove duplicates. */ | |
375 | init_source_path (); | |
376 | if (*set_path != '\0') | |
377 | mod_path (set_path, &source_path); | |
378 | ||
379 | xfree (set_path); | |
380 | } | |
381 | ||
382 | /* Print the list of source directories. | |
383 | This is used by the "ld" command, so it has the signature of a command | |
384 | function. */ | |
385 | ||
c906108c | 386 | static void |
99e7ae30 | 387 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
388 | { |
389 | puts_filtered ("Source directories searched: "); | |
390 | puts_filtered (source_path); | |
391 | puts_filtered ("\n"); | |
392 | } | |
393 | ||
99e7ae30 DE |
394 | /* Handler for "show directories" command. */ |
395 | ||
396 | static void | |
397 | show_directories_command (struct ui_file *file, int from_tty, | |
398 | struct cmd_list_element *c, const char *value) | |
399 | { | |
400 | show_directories_1 (NULL, from_tty); | |
401 | } | |
402 | ||
583068ca | 403 | /* See source.h. */ |
00174a86 TT |
404 | |
405 | void | |
406 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
407 | { | |
b669c953 | 408 | for (compunit_symtab *cu : objfile->compunits ()) |
00174a86 | 409 | { |
d5da8b3c | 410 | for (symtab *s : compunit_filetabs (cu)) |
00174a86 | 411 | { |
d5da8b3c TT |
412 | if (s->fullname != NULL) |
413 | { | |
414 | xfree (s->fullname); | |
415 | s->fullname = NULL; | |
416 | } | |
00174a86 | 417 | } |
00174a86 | 418 | } |
6f809020 DE |
419 | |
420 | if (objfile->sf) | |
421 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
422 | } |
423 | ||
583068ca | 424 | /* See source.h. */ |
c906108c SS |
425 | |
426 | void | |
fba45db2 | 427 | forget_cached_source_info (void) |
c906108c | 428 | { |
94c93c35 | 429 | for (struct program_space *pspace : program_spaces) |
2030c079 | 430 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
431 | { |
432 | forget_cached_source_info_for_objfile (objfile); | |
433 | } | |
c4e86dd4 | 434 | |
62f29fda | 435 | g_source_cache.clear (); |
c4e86dd4 | 436 | last_source_visited = NULL; |
c906108c SS |
437 | } |
438 | ||
439 | void | |
fba45db2 | 440 | init_source_path (void) |
c906108c SS |
441 | { |
442 | char buf[20]; | |
443 | ||
08850b56 | 444 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 445 | source_path = xstrdup (buf); |
c906108c SS |
446 | forget_cached_source_info (); |
447 | } | |
448 | ||
449 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 450 | |
28da1647 | 451 | static void |
5fed81ff | 452 | directory_command (const char *dirname, int from_tty) |
c906108c | 453 | { |
f5c4b229 | 454 | bool value_changed = false; |
c906108c | 455 | dont_repeat (); |
c378eb4e | 456 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
457 | if (dirname == 0) |
458 | { | |
80618b99 | 459 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 460 | { |
b8c9b27d | 461 | xfree (source_path); |
c906108c | 462 | init_source_path (); |
f5c4b229 | 463 | value_changed = true; |
c906108c SS |
464 | } |
465 | } | |
466 | else | |
467 | { | |
468 | mod_path (dirname, &source_path); | |
c4e86dd4 | 469 | forget_cached_source_info (); |
f5c4b229 JV |
470 | value_changed = true; |
471 | } | |
472 | if (value_changed) | |
473 | { | |
474 | gdb::observers::command_param_changed.notify ("directories", source_path); | |
475 | if (from_tty) | |
476 | show_directories_1 ((char *) 0, from_tty); | |
c906108c | 477 | } |
c906108c SS |
478 | } |
479 | ||
13d35ae5 AS |
480 | /* Add a path given with the -d command line switch. |
481 | This will not be quoted so we must not treat spaces as separators. */ | |
482 | ||
483 | void | |
5614fb77 | 484 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
485 | { |
486 | add_path (dirname, &source_path, 0); | |
487 | } | |
488 | ||
c906108c SS |
489 | /* Add zero or more directories to the front of an arbitrary path. */ |
490 | ||
491 | void | |
5614fb77 | 492 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
493 | { |
494 | add_path (dirname, which_path, 1); | |
495 | } | |
496 | ||
497 | /* Workhorse of mod_path. Takes an extra argument to determine | |
498 | if dirname should be parsed for separators that indicate multiple | |
499 | directories. This allows for interfaces that pre-parse the dirname | |
500 | and allow specification of traditional separator characters such | |
c378eb4e | 501 | as space or tab. */ |
c04e0a08 JJ |
502 | |
503 | void | |
5614fb77 | 504 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
505 | { |
506 | char *old = *which_path; | |
507 | int prefix = 0; | |
e80aaf61 | 508 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
509 | |
510 | if (dirname == 0) | |
511 | return; | |
512 | ||
13d35ae5 AS |
513 | if (parse_separators) |
514 | { | |
515 | /* This will properly parse the space and tab separators | |
e4ab2fad | 516 | and any quotes that may exist. */ |
773a1edc | 517 | gdb_argv argv (dirname); |
e4ab2fad | 518 | |
773a1edc TT |
519 | for (char *arg : argv) |
520 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
521 | } |
522 | else | |
e80aaf61 | 523 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 524 | |
e80aaf61 | 525 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) |
c906108c | 526 | { |
e80aaf61 | 527 | char *name = name_up.get (); |
aa1ee363 | 528 | char *p; |
c906108c | 529 | struct stat st; |
db68fbe2 | 530 | gdb::unique_xmalloc_ptr<char> new_name_holder; |
c906108c | 531 | |
e4ab2fad | 532 | /* Spaces and tabs will have been removed by buildargv(). |
dda83cd7 | 533 | NAME is the start of the directory. |
e4ab2fad JK |
534 | P is the '\0' following the end. */ |
535 | p = name + strlen (name); | |
13d35ae5 AS |
536 | |
537 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 538 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 539 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 540 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 541 | #endif |
13d35ae5 | 542 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 543 | /* Sigh. "foo/" => "foo" */ |
c906108c | 544 | --p; |
c906108c SS |
545 | *p = '\0'; |
546 | ||
7be570e7 | 547 | while (p > name && p[-1] == '.') |
c906108c SS |
548 | { |
549 | if (p - name == 1) | |
550 | { | |
551 | /* "." => getwd (). */ | |
552 | name = current_directory; | |
553 | goto append; | |
554 | } | |
fe4e3eb8 | 555 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
556 | { |
557 | if (p - name == 2) | |
558 | { | |
559 | /* "/." => "/". */ | |
560 | *--p = '\0'; | |
561 | goto append; | |
562 | } | |
563 | else | |
564 | { | |
565 | /* "...foo/." => "...foo". */ | |
566 | p -= 2; | |
567 | *p = '\0'; | |
568 | continue; | |
569 | } | |
570 | } | |
571 | else | |
572 | break; | |
573 | } | |
574 | ||
bb3a4efe LS |
575 | if (name[0] == '\0') |
576 | goto skip_dup; | |
c906108c | 577 | if (name[0] == '~') |
db68fbe2 | 578 | new_name_holder.reset (tilde_expand (name)); |
c3690141 | 579 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 580 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
db68fbe2 | 581 | new_name_holder.reset (concat (name, ".", (char *) NULL)); |
7be570e7 | 582 | #endif |
fe4e3eb8 | 583 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
ff8577f6 | 584 | new_name_holder = gdb_abspath (name); |
c906108c | 585 | else |
db68fbe2 TT |
586 | new_name_holder.reset (savestring (name, p - name)); |
587 | name = new_name_holder.get (); | |
c906108c SS |
588 | |
589 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
590 | if (name[0] != '$') |
591 | { | |
592 | /* These are warnings, not errors, since we don't want a | |
593 | non-existent directory in a .gdbinit file to stop processing | |
594 | of the .gdbinit file. | |
595 | ||
596 | Whether they get added to the path is more debatable. Current | |
597 | answer is yes, in case the user wants to go make the directory | |
598 | or whatever. If the directory continues to not exist/not be | |
599 | a directory/etc, then having them in the path should be | |
600 | harmless. */ | |
601 | if (stat (name, &st) < 0) | |
602 | { | |
603 | int save_errno = errno; | |
433759f7 | 604 | |
c5aa993b JM |
605 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
606 | print_sys_errmsg (name, save_errno); | |
607 | } | |
608 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 609 | warning (_("%s is not a directory."), name); |
c5aa993b | 610 | } |
c906108c SS |
611 | |
612 | append: | |
613 | { | |
aa1ee363 | 614 | unsigned int len = strlen (name); |
5ee4ed9f | 615 | char tinybuf[2]; |
c906108c SS |
616 | |
617 | p = *which_path; | |
5e3f4fab | 618 | while (1) |
c906108c | 619 | { |
5e3f4fab EBM |
620 | /* FIXME: we should use realpath() or its work-alike |
621 | before comparing. Then all the code above which | |
622 | removes excess slashes and dots could simply go away. */ | |
623 | if (!filename_ncmp (p, name, len) | |
624 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
625 | { | |
626 | /* Found it in the search path, remove old copy. */ | |
627 | if (p > *which_path) | |
628 | { | |
629 | /* Back over leading separator. */ | |
630 | p--; | |
631 | } | |
632 | if (prefix > p - *which_path) | |
633 | { | |
634 | /* Same dir twice in one cmd. */ | |
635 | goto skip_dup; | |
636 | } | |
637 | /* Copy from next '\0' or ':'. */ | |
638 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
639 | } | |
640 | p = strchr (p, DIRNAME_SEPARATOR); | |
641 | if (p != 0) | |
642 | ++p; | |
643 | else | |
644 | break; | |
c906108c | 645 | } |
c906108c | 646 | |
5ee4ed9f JK |
647 | tinybuf[0] = DIRNAME_SEPARATOR; |
648 | tinybuf[1] = '\0'; | |
c906108c | 649 | |
5ee4ed9f JK |
650 | /* If we have already tacked on a name(s) in this command, |
651 | be sure they stay on the front as we tack on some | |
652 | more. */ | |
653 | if (prefix) | |
654 | { | |
655 | char *temp, c; | |
656 | ||
657 | c = old[prefix]; | |
658 | old[prefix] = '\0'; | |
659 | temp = concat (old, tinybuf, name, (char *)NULL); | |
660 | old[prefix] = c; | |
661 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
662 | prefix = strlen (temp); | |
663 | xfree (temp); | |
664 | } | |
665 | else | |
666 | { | |
667 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
668 | old, (char *)NULL); | |
669 | prefix = strlen (name); | |
c906108c | 670 | } |
5ee4ed9f JK |
671 | xfree (old); |
672 | old = *which_path; | |
c906108c | 673 | } |
82ae4854 | 674 | skip_dup: |
b27cf2b3 | 675 | ; |
c5aa993b | 676 | } |
c906108c SS |
677 | } |
678 | ||
679 | ||
680 | static void | |
1d12d88f | 681 | info_source_command (const char *ignore, int from_tty) |
c906108c | 682 | { |
1dd58850 TT |
683 | current_source_location *loc |
684 | = get_source_location (current_program_space); | |
a75cd9a2 | 685 | struct symtab *s = loc->symtab (); |
b6577aab | 686 | struct compunit_symtab *cust; |
c906108c SS |
687 | |
688 | if (!s) | |
689 | { | |
a3f17187 | 690 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
691 | return; |
692 | } | |
b6577aab DE |
693 | |
694 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 695 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
696 | if (SYMTAB_DIRNAME (s) != NULL) |
697 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 698 | if (s->fullname) |
a3f17187 | 699 | printf_filtered (_("Located in %s\n"), s->fullname); |
cb44333d TT |
700 | const std::vector<off_t> *offsets; |
701 | if (g_source_cache.get_line_charpos (s, &offsets)) | |
702 | printf_filtered (_("Contains %d line%s.\n"), (int) offsets->size (), | |
703 | offsets->size () == 1 ? "" : "s"); | |
c906108c | 704 | |
a3f17187 | 705 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
706 | printf_filtered (_("Producer is %s.\n"), |
707 | COMPUNIT_PRODUCER (cust) != NULL | |
708 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 709 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 710 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 711 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 712 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 713 | ? "Includes" : "Does not include"); |
c906108c | 714 | } |
c5aa993b | 715 | \f |
c906108c | 716 | |
f1b620e9 MG |
717 | /* Helper function to remove characters from the start of PATH so that |
718 | PATH can then be appended to a directory name. We remove leading drive | |
719 | letters (for dos) as well as leading '/' characters and './' | |
720 | sequences. */ | |
721 | ||
cb8c24b6 | 722 | static const char * |
f1b620e9 MG |
723 | prepare_path_for_appending (const char *path) |
724 | { | |
725 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ | |
726 | if (HAS_DRIVE_SPEC (path)) | |
727 | path = STRIP_DRIVE_SPEC (path); | |
728 | ||
729 | const char *old_path; | |
730 | do | |
731 | { | |
732 | old_path = path; | |
733 | ||
734 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ | |
735 | while (IS_DIR_SEPARATOR(path[0])) | |
736 | path++; | |
737 | ||
738 | /* ./foo => foo */ | |
739 | while (path[0] == '.' && IS_DIR_SEPARATOR (path[1])) | |
740 | path += 2; | |
741 | } | |
742 | while (old_path != path); | |
743 | ||
744 | return path; | |
745 | } | |
746 | ||
c906108c | 747 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
748 | using mode MODE in the calls to open. You cannot use this function to |
749 | create files (O_CREAT). | |
c906108c | 750 | |
014d698b EZ |
751 | OPTS specifies the function behaviour in specific cases. |
752 | ||
753 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 754 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
755 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
756 | disables searching of the path (this is so that "exec-file ./foo" or | |
757 | "symbol-file ./foo" insures that you get that particular version of | |
758 | foo or an error message). | |
c906108c | 759 | |
014d698b EZ |
760 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
761 | searched in path (we usually want this for source files but not for | |
762 | executables). | |
763 | ||
e7a8479f | 764 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 765 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
766 | have to take special pains to avoid doubling the "/" between the directory |
767 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
768 | source file name!!! | |
769 | ||
492c0ab7 JK |
770 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
771 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
772 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
773 | effect. | |
1f0c4988 | 774 | |
c906108c SS |
775 | If a file is found, return the descriptor. |
776 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
777 | ||
778 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 779 | >>>> eg executable, non-directory. */ |
c906108c | 780 | int |
24b9144d | 781 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 782 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 783 | { |
52f0bd74 AC |
784 | int fd; |
785 | char *filename; | |
c906108c | 786 | int alloclen; |
79b289e2 PA |
787 | /* The errno set for the last name we tried to open (and |
788 | failed). */ | |
789 | int last_errno = 0; | |
e80aaf61 | 790 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 791 | |
fbdebf46 JK |
792 | /* The open syscall MODE parameter is not specified. */ |
793 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
794 | gdb_assert (string != NULL); |
795 | ||
796 | /* A file with an empty name cannot possibly exist. Report a failure | |
797 | without further checking. | |
798 | ||
799 | This is an optimization which also defends us against buggy | |
800 | implementations of the "stat" function. For instance, we have | |
801 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
802 | when the debugger is started with an empty argument. */ | |
803 | if (string[0] == '\0') | |
804 | { | |
805 | errno = ENOENT; | |
806 | return -1; | |
807 | } | |
fbdebf46 | 808 | |
c906108c SS |
809 | if (!path) |
810 | path = "."; | |
811 | ||
c906108c | 812 | mode |= O_BINARY; |
c906108c | 813 | |
014d698b | 814 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 815 | { |
a55411b9 | 816 | int i, reg_file_errno; |
072b1022 | 817 | |
a55411b9 | 818 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 819 | { |
224c3ddb | 820 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 821 | strcpy (filename, string); |
614c279d | 822 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
823 | if (fd >= 0) |
824 | goto done; | |
a55411b9 | 825 | last_errno = errno; |
072b1022 DJ |
826 | } |
827 | else | |
3f565f1e DJ |
828 | { |
829 | filename = NULL; | |
830 | fd = -1; | |
a55411b9 | 831 | last_errno = reg_file_errno; |
3f565f1e | 832 | } |
072b1022 | 833 | |
014d698b EZ |
834 | if (!(opts & OPF_SEARCH_IN_PATH)) |
835 | for (i = 0; string[i]; i++) | |
836 | if (IS_DIR_SEPARATOR (string[i])) | |
837 | goto done; | |
c906108c SS |
838 | } |
839 | ||
f1b620e9 MG |
840 | /* Remove characters from the start of PATH that we don't need when PATH |
841 | is appended to a directory name. */ | |
842 | string = prepare_path_for_appending (string); | |
c906108c SS |
843 | |
844 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 845 | filename = (char *) alloca (alloclen); |
c906108c | 846 | fd = -1; |
79b289e2 | 847 | last_errno = ENOENT; |
e4ab2fad JK |
848 | |
849 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 850 | |
e80aaf61 | 851 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 852 | { |
e80aaf61 | 853 | char *dir = dir_up.get (); |
e4ab2fad | 854 | size_t len = strlen (dir); |
a55411b9 | 855 | int reg_file_errno; |
c906108c | 856 | |
e4ab2fad | 857 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
858 | { |
859 | /* Name is $cwd -- insert current directory name instead. */ | |
860 | int newlen; | |
861 | ||
c378eb4e | 862 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
863 | len = strlen (current_directory); |
864 | newlen = len + strlen (string) + 2; | |
865 | if (newlen > alloclen) | |
866 | { | |
867 | alloclen = newlen; | |
224c3ddb | 868 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
869 | } |
870 | strcpy (filename, current_directory); | |
871 | } | |
ebd86fb5 TJB |
872 | else if (strchr(dir, '~')) |
873 | { | |
874 | /* See whether we need to expand the tilde. */ | |
875 | int newlen; | |
ebd86fb5 | 876 | |
ee0c3293 | 877 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
878 | |
879 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 880 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
881 | newlen = len + strlen (string) + 2; |
882 | if (newlen > alloclen) | |
883 | { | |
884 | alloclen = newlen; | |
224c3ddb | 885 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 886 | } |
ee0c3293 | 887 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 888 | } |
c5aa993b JM |
889 | else |
890 | { | |
891 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 892 | strcpy (filename, dir); |
08001717 DE |
893 | |
894 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
895 | don't have enough information to expand it. The user *could* | |
896 | have an actual directory named '$cdir' but handling that would | |
897 | be confusing, it would mean different things in different | |
898 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
899 | We can get $cdir when loading scripts. When loading source files | |
900 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 901 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 902 | continue; |
c906108c | 903 | } |
c906108c | 904 | |
c378eb4e | 905 | /* Remove trailing slashes. */ |
fe4e3eb8 | 906 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
907 | filename[--len] = 0; |
908 | ||
c5aa993b | 909 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
910 | strcat (filename, string); |
911 | ||
a55411b9 | 912 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 913 | { |
614c279d | 914 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
915 | if (fd >= 0) |
916 | break; | |
79b289e2 | 917 | last_errno = errno; |
5e987968 | 918 | } |
a55411b9 DE |
919 | else |
920 | last_errno = reg_file_errno; | |
c906108c SS |
921 | } |
922 | ||
c5aa993b | 923 | done: |
c906108c SS |
924 | if (filename_opened) |
925 | { | |
f5b95b50 | 926 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 927 | if (fd < 0) |
e0cc99a6 | 928 | filename_opened->reset (NULL); |
04affae3 | 929 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 930 | *filename_opened = gdb_realpath (filename); |
c906108c | 931 | else |
e0cc99a6 | 932 | *filename_opened = gdb_abspath (filename); |
c906108c | 933 | } |
c906108c | 934 | |
79b289e2 | 935 | errno = last_errno; |
c906108c SS |
936 | return fd; |
937 | } | |
938 | ||
c5aa993b | 939 | |
c906108c SS |
940 | /* This is essentially a convenience, for clients that want the behaviour |
941 | of openp, using source_path, but that really don't want the file to be | |
942 | opened but want instead just to know what the full pathname is (as | |
943 | qualified against source_path). | |
944 | ||
945 | The current working directory is searched first. | |
946 | ||
947 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
948 | set to the fully-qualified pathname. | |
949 | ||
5e987968 | 950 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 951 | int |
e0cc99a6 TT |
952 | source_full_path_of (const char *filename, |
953 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 954 | { |
c5aa993b | 955 | int fd; |
c906108c | 956 | |
492c0ab7 JK |
957 | fd = openp (source_path, |
958 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
959 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
960 | if (fd < 0) |
961 | { | |
e0cc99a6 | 962 | full_pathname->reset (NULL); |
c906108c SS |
963 | return 0; |
964 | } | |
965 | ||
966 | close (fd); | |
967 | return 1; | |
968 | } | |
969 | ||
2f61ca93 JB |
970 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
971 | applied to PATH. */ | |
972 | ||
973 | static int | |
974 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
dda83cd7 | 975 | const char *path) |
2f61ca93 JB |
976 | { |
977 | const int from_len = strlen (rule->from); | |
978 | const int path_len = strlen (path); | |
2f61ca93 JB |
979 | |
980 | if (path_len < from_len) | |
981 | return 0; | |
982 | ||
983 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 984 | so the path should start with rule->from. */ |
2f61ca93 | 985 | |
486ef3b9 | 986 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
987 | return 0; |
988 | ||
989 | /* Make sure that the region in the path that matches the substitution | |
990 | rule is immediately followed by a directory separator (or the end of | |
991 | string character). */ | |
230cd560 | 992 | |
2f61ca93 JB |
993 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
994 | return 0; | |
995 | ||
996 | return 1; | |
997 | } | |
998 | ||
999 | /* Find the substitute-path rule that applies to PATH and return it. | |
1000 | Return NULL if no rule applies. */ | |
1001 | ||
1002 | static struct substitute_path_rule * | |
1003 | get_substitute_path_rule (const char *path) | |
1004 | { | |
1005 | struct substitute_path_rule *rule = substitute_path_rules; | |
1006 | ||
1007 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
1008 | rule = rule->next; | |
1009 | ||
1010 | return rule; | |
1011 | } | |
1012 | ||
1013 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
1014 | to PATH, then apply it and return the new path. |
1015 | ||
2f61ca93 JB |
1016 | Return NULL if no substitution rule was specified by the user, |
1017 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
1018 | |
1019 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
1020 | rewrite_source_path (const char *path) |
1021 | { | |
1022 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
1023 | char *new_path; | |
1024 | int from_len; | |
1025 | ||
1026 | if (rule == NULL) | |
1027 | return NULL; | |
1028 | ||
1029 | from_len = strlen (rule->from); | |
1030 | ||
1031 | /* Compute the rewritten path and return it. */ | |
1032 | ||
1033 | new_path = | |
1034 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
1035 | strcpy (new_path, rule->to); | |
1036 | strcat (new_path, path + from_len); | |
1037 | ||
0b581c69 | 1038 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
1039 | } |
1040 | ||
2179fbc3 TT |
1041 | /* See source.h. */ |
1042 | ||
1043 | scoped_fd | |
e2357892 | 1044 | find_and_open_source (const char *filename, |
5e987968 | 1045 | const char *dirname, |
e0cc99a6 | 1046 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
1047 | { |
1048 | char *path = source_path; | |
31889e00 | 1049 | const char *p; |
c906108c | 1050 | int result; |
c906108c | 1051 | |
c378eb4e | 1052 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1053 | |
57c22c6c | 1054 | if (*fullname) |
c906108c | 1055 | { |
2f61ca93 | 1056 | /* The user may have requested that source paths be rewritten |
dda83cd7 SM |
1057 | according to substitution rules he provided. If a substitution |
1058 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
1059 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
1060 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
1061 | |
1062 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 1063 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 1064 | |
e0cc99a6 | 1065 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 1066 | if (result >= 0) |
bc3aa6c3 | 1067 | { |
5abbbe1d | 1068 | *fullname = gdb_realpath (fullname->get ()); |
2179fbc3 | 1069 | return scoped_fd (result); |
bc3aa6c3 DE |
1070 | } |
1071 | ||
c378eb4e | 1072 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1073 | fullname->reset (NULL); |
c906108c SS |
1074 | } |
1075 | ||
0b581c69 | 1076 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1077 | if (dirname != NULL) |
c906108c | 1078 | { |
2f61ca93 | 1079 | /* If necessary, rewrite the compilation directory name according |
dda83cd7 | 1080 | to the source path substitution rules specified by the user. */ |
2f61ca93 | 1081 | |
0b581c69 | 1082 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1083 | |
1084 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1085 | dirname = rewritten_dirname.get (); |
1086 | ||
c378eb4e MS |
1087 | /* Replace a path entry of $cdir with the compilation directory |
1088 | name. */ | |
c906108c | 1089 | #define cdir_len 5 |
33d0e35a | 1090 | p = strstr (source_path, "$cdir"); |
c906108c | 1091 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1092 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1093 | { |
1094 | int len; | |
1095 | ||
1096 | path = (char *) | |
57c22c6c | 1097 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1098 | len = p - source_path; |
c5aa993b | 1099 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1100 | strcpy (path + len, dirname); /* new stuff */ |
1101 | strcat (path + len, source_path + len + cdir_len); /* After | |
1102 | $cdir */ | |
c906108c SS |
1103 | } |
1104 | } | |
8da2a1df | 1105 | |
4fa0265e РИ |
1106 | gdb::unique_xmalloc_ptr<char> rewritten_filename |
1107 | = rewrite_source_path (filename); | |
56163ce1 | 1108 | |
4fa0265e РИ |
1109 | if (rewritten_filename != NULL) |
1110 | filename = rewritten_filename.get (); | |
c906108c | 1111 | |
f1b620e9 | 1112 | /* Try to locate file using filename. */ |
5abbbe1d TT |
1113 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1114 | OPEN_MODE, fullname); | |
f1b620e9 MG |
1115 | if (result < 0 && dirname != NULL) |
1116 | { | |
1117 | /* Remove characters from the start of PATH that we don't need when | |
1118 | PATH is appended to a directory name. */ | |
1119 | const char *filename_start = prepare_path_for_appending (filename); | |
1120 | ||
1121 | /* Try to locate file using compilation dir + filename. This is | |
1122 | helpful if part of the compilation directory was removed, | |
1123 | e.g. using gcc's -fdebug-prefix-map, and we have added the missing | |
1124 | prefix to source_path. */ | |
1125 | std::string cdir_filename (dirname); | |
1126 | ||
1127 | /* Remove any trailing directory separators. */ | |
1128 | while (IS_DIR_SEPARATOR (cdir_filename.back ())) | |
1129 | cdir_filename.pop_back (); | |
1130 | ||
1131 | /* Add our own directory separator. */ | |
1132 | cdir_filename.append (SLASH_STRING); | |
1133 | cdir_filename.append (filename_start); | |
1134 | ||
5abbbe1d TT |
1135 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, |
1136 | cdir_filename.c_str (), OPEN_MODE, fullname); | |
f1b620e9 | 1137 | } |
c906108c SS |
1138 | if (result < 0) |
1139 | { | |
c378eb4e | 1140 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1141 | p = lbasename (filename); |
1142 | if (p != filename) | |
5abbbe1d TT |
1143 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1144 | OPEN_MODE, fullname); | |
c906108c | 1145 | } |
c906108c | 1146 | |
2179fbc3 | 1147 | return scoped_fd (result); |
c906108c SS |
1148 | } |
1149 | ||
57c22c6c BR |
1150 | /* Open a source file given a symtab S. Returns a file descriptor or |
1151 | negative number for error. | |
1152 | ||
85102364 | 1153 | This function is a convenience function to find_and_open_source. */ |
57c22c6c | 1154 | |
2179fbc3 | 1155 | scoped_fd |
57c22c6c BR |
1156 | open_source_file (struct symtab *s) |
1157 | { | |
5e987968 | 1158 | if (!s) |
2179fbc3 | 1159 | return scoped_fd (-1); |
57c22c6c | 1160 | |
54460946 | 1161 | gdb::unique_xmalloc_ptr<char> fullname (s->fullname); |
8e6a5953 | 1162 | s->fullname = NULL; |
2179fbc3 TT |
1163 | scoped_fd fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), |
1164 | &fullname); | |
0d79cdc4 AM |
1165 | |
1166 | if (fd.get () < 0) | |
1167 | { | |
1168 | if (SYMTAB_COMPUNIT (s) != nullptr) | |
1169 | { | |
1170 | const objfile *ofp = COMPUNIT_OBJFILE (SYMTAB_COMPUNIT (s)); | |
1171 | ||
1172 | std::string srcpath; | |
1173 | if (IS_ABSOLUTE_PATH (s->filename)) | |
1174 | srcpath = s->filename; | |
e5da1139 | 1175 | else if (SYMTAB_DIRNAME (s) != nullptr) |
0d79cdc4 AM |
1176 | { |
1177 | srcpath = SYMTAB_DIRNAME (s); | |
1178 | srcpath += SLASH_STRING; | |
1179 | srcpath += s->filename; | |
1180 | } | |
1181 | ||
1182 | const struct bfd_build_id *build_id = build_id_bfd_get (ofp->obfd); | |
1183 | ||
1184 | /* Query debuginfod for the source file. */ | |
e5da1139 | 1185 | if (build_id != nullptr && !srcpath.empty ()) |
0d79cdc4 AM |
1186 | fd = debuginfod_source_query (build_id->data, |
1187 | build_id->size, | |
1188 | srcpath.c_str (), | |
1189 | &fullname); | |
1190 | } | |
1191 | } | |
1192 | ||
e0cc99a6 TT |
1193 | s->fullname = fullname.release (); |
1194 | return fd; | |
57c22c6c BR |
1195 | } |
1196 | ||
1197 | /* Finds the fullname that a symtab represents. | |
c906108c | 1198 | |
f35a17b5 JK |
1199 | This functions finds the fullname and saves it in s->fullname. |
1200 | It will also return the value. | |
57c22c6c BR |
1201 | |
1202 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1203 | the expected fullname is used. Therefore the files does not have to |
1204 | exist. */ | |
256f06f3 | 1205 | |
0b0865da | 1206 | const char * |
57c22c6c | 1207 | symtab_to_fullname (struct symtab *s) |
c906108c | 1208 | { |
256f06f3 DE |
1209 | /* Use cached copy if we have it. |
1210 | We rely on forget_cached_source_info being called appropriately | |
1211 | to handle cases like the file being moved. */ | |
f35a17b5 | 1212 | if (s->fullname == NULL) |
5e987968 | 1213 | { |
2179fbc3 | 1214 | scoped_fd fd = open_source_file (s); |
f35a17b5 | 1215 | |
2179fbc3 | 1216 | if (fd.get () < 0) |
f0a4b570 | 1217 | { |
0b581c69 | 1218 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1219 | |
1220 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1221 | should report the pathname where GDB tried to find the file. */ | |
1222 | ||
ee6f8984 | 1223 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1224 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1225 | else |
0b581c69 TT |
1226 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1227 | s->filename, (char *) NULL)); | |
f0a4b570 | 1228 | |
0b581c69 | 1229 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1230 | if (s->fullname == NULL) |
0b581c69 | 1231 | s->fullname = fullname.release (); |
f0a4b570 | 1232 | } |
f35a17b5 | 1233 | } |
c906108c | 1234 | |
f35a17b5 | 1235 | return s->fullname; |
57c22c6c | 1236 | } |
1b56eb55 JK |
1237 | |
1238 | /* See commentary in source.h. */ | |
1239 | ||
1240 | const char * | |
1241 | symtab_to_filename_for_display (struct symtab *symtab) | |
1242 | { | |
1243 | if (filename_display_string == filename_display_basename) | |
1244 | return lbasename (symtab->filename); | |
1245 | else if (filename_display_string == filename_display_absolute) | |
1246 | return symtab_to_fullname (symtab); | |
1247 | else if (filename_display_string == filename_display_relative) | |
1248 | return symtab->filename; | |
1249 | else | |
1250 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1251 | } | |
c906108c | 1252 | |
00df30ae AB |
1253 | \f |
1254 | ||
c906108c | 1255 | /* Print source lines from the file of symtab S, |
c378eb4e | 1256 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1257 | |
1258 | static void | |
dfaae886 | 1259 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1260 | print_source_lines_flags flags) |
c906108c | 1261 | { |
b08b16c8 | 1262 | bool noprint = false; |
c906108c | 1263 | int nlines = stopline - line; |
79a45e25 | 1264 | struct ui_out *uiout = current_uiout; |
c906108c | 1265 | |
c378eb4e | 1266 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
1dd58850 TT |
1267 | current_source_location *loc |
1268 | = get_source_location (current_program_space); | |
1269 | ||
a75cd9a2 | 1270 | loc->set (s, line); |
c906108c | 1271 | first_line_listed = line; |
8b7fcda2 | 1272 | last_line_listed = line; |
c906108c | 1273 | |
3e43a32a | 1274 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1275 | number. */ |
112e8700 | 1276 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1277 | { |
c378eb4e | 1278 | /* Only prints "No such file or directory" once. */ |
b08b16c8 | 1279 | if (s == last_source_visited) |
c5aa993b | 1280 | { |
b08b16c8 | 1281 | if (last_source_error) |
2179fbc3 | 1282 | { |
b08b16c8 TT |
1283 | flags |= PRINT_SOURCE_LINES_NOERROR; |
1284 | noprint = true; | |
2179fbc3 | 1285 | } |
c5aa993b JM |
1286 | } |
1287 | else | |
1288 | { | |
b08b16c8 TT |
1289 | last_source_visited = s; |
1290 | scoped_fd desc = open_source_file (s); | |
1291 | last_source_error = desc.get () < 0; | |
1292 | if (last_source_error) | |
1293 | noprint = true; | |
c5aa993b | 1294 | } |
8b93c638 JM |
1295 | } |
1296 | else | |
1297 | { | |
8d297bbf | 1298 | flags |= PRINT_SOURCE_LINES_NOERROR; |
b08b16c8 | 1299 | noprint = true; |
8b93c638 | 1300 | } |
c906108c | 1301 | |
2179fbc3 | 1302 | if (noprint) |
c906108c | 1303 | { |
dfaae886 | 1304 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1305 | { |
05cba821 JK |
1306 | const char *filename = symtab_to_filename_for_display (s); |
1307 | int len = strlen (filename) + 100; | |
224c3ddb | 1308 | char *name = (char *) alloca (len); |
08850b56 | 1309 | |
05cba821 | 1310 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1311 | print_sys_errmsg (name, errno); |
1312 | } | |
1313 | else | |
fc0ae648 | 1314 | { |
381befee | 1315 | uiout->field_signed ("line", line); |
112e8700 | 1316 | uiout->text ("\tin "); |
56d397a3 | 1317 | |
23eb71e4 JK |
1318 | /* CLI expects only the "file" field. TUI expects only the |
1319 | "fullname" field (and TUI does break if "file" is printed). | |
1320 | MI expects both fields. ui_source_list is set only for CLI, | |
1321 | not for TUI. */ | |
112e8700 | 1322 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
cbe56571 | 1323 | uiout->field_string ("file", symtab_to_filename_for_display (s), |
e43b10e1 | 1324 | file_name_style.style ()); |
112e8700 | 1325 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) |
8f1b8b82 JK |
1326 | { |
1327 | const char *s_fullname = symtab_to_fullname (s); | |
1328 | char *local_fullname; | |
1329 | ||
1330 | /* ui_out_field_string may free S_FULLNAME by calling | |
1331 | open_source_file for it again. See e.g., | |
1332 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1333 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1334 | strcpy (local_fullname, s_fullname); |
1335 | ||
112e8700 | 1336 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1337 | } |
23eb71e4 | 1338 | |
112e8700 | 1339 | uiout->text ("\n"); |
fc0ae648 | 1340 | } |
c906108c SS |
1341 | |
1342 | return; | |
1343 | } | |
1344 | ||
ec98a4ad | 1345 | /* If the user requested a sequence of lines that seems to go backward |
0e2a2133 AB |
1346 | (from high to low line numbers) then we don't print anything. */ |
1347 | if (stopline <= line) | |
ec98a4ad AB |
1348 | return; |
1349 | ||
62f29fda TT |
1350 | std::string lines; |
1351 | if (!g_source_cache.get_source_lines (s, line, stopline - 1, &lines)) | |
cb44333d TT |
1352 | { |
1353 | const std::vector<off_t> *offsets = nullptr; | |
1354 | g_source_cache.get_line_charpos (s, &offsets); | |
1355 | error (_("Line number %d out of range; %s has %d lines."), | |
1356 | line, symtab_to_filename_for_display (s), | |
1357 | offsets == nullptr ? 0 : (int) offsets->size ()); | |
1358 | } | |
c906108c | 1359 | |
62f29fda | 1360 | const char *iter = lines.c_str (); |
a75cd9a2 | 1361 | int new_lineno = loc->line (); |
a0087920 | 1362 | while (nlines-- > 0 && *iter != '\0') |
c906108c | 1363 | { |
8b93c638 JM |
1364 | char buf[20]; |
1365 | ||
a75cd9a2 | 1366 | last_line_listed = loc->line (); |
4cd29721 | 1367 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
dda83cd7 SM |
1368 | { |
1369 | uiout->text (symtab_to_filename_for_display (s)); | |
1370 | uiout->text (":"); | |
1371 | } | |
a75cd9a2 | 1372 | xsnprintf (buf, sizeof (buf), "%d\t", new_lineno++); |
112e8700 | 1373 | uiout->text (buf); |
a0087920 TT |
1374 | |
1375 | while (*iter != '\0') | |
8b93c638 | 1376 | { |
a0087920 TT |
1377 | /* Find a run of characters that can be emitted at once. |
1378 | This is done so that escape sequences are kept | |
1379 | together. */ | |
1380 | const char *start = iter; | |
1381 | while (true) | |
8b93c638 | 1382 | { |
a0087920 TT |
1383 | int skip_bytes; |
1384 | ||
1385 | char c = *iter; | |
1386 | if (c == '\033' && skip_ansi_escape (iter, &skip_bytes)) | |
1387 | iter += skip_bytes; | |
62160ec9 | 1388 | else if (c >= 0 && c < 040 && c != '\t') |
a0087920 TT |
1389 | break; |
1390 | else if (c == 0177) | |
1391 | break; | |
1392 | else | |
1393 | ++iter; | |
8b93c638 | 1394 | } |
a0087920 | 1395 | if (iter > start) |
8b93c638 | 1396 | { |
a0087920 TT |
1397 | std::string text (start, iter); |
1398 | uiout->text (text.c_str ()); | |
8b93c638 | 1399 | } |
a0087920 TT |
1400 | if (*iter == '\r') |
1401 | { | |
1402 | /* Treat either \r or \r\n as a single newline. */ | |
1403 | ++iter; | |
1404 | if (*iter == '\n') | |
1405 | ++iter; | |
1406 | break; | |
1407 | } | |
1408 | else if (*iter == '\n') | |
1409 | { | |
1410 | ++iter; | |
1411 | break; | |
1412 | } | |
1413 | else if (*iter > 0 && *iter < 040) | |
8b93c638 | 1414 | { |
a0087920 | 1415 | xsnprintf (buf, sizeof (buf), "^%c", *iter + 0100); |
112e8700 | 1416 | uiout->text (buf); |
62160ec9 | 1417 | ++iter; |
8b93c638 | 1418 | } |
a0087920 | 1419 | else if (*iter == 0177) |
62160ec9 TT |
1420 | { |
1421 | uiout->text ("^?"); | |
1422 | ++iter; | |
1423 | } | |
8b93c638 | 1424 | } |
a0087920 | 1425 | uiout->text ("\n"); |
c906108c | 1426 | } |
a75cd9a2 TT |
1427 | |
1428 | loc->set (loc->symtab (), new_lineno); | |
c906108c SS |
1429 | } |
1430 | \f | |
583068ca AB |
1431 | |
1432 | /* See source.h. */ | |
c906108c | 1433 | |
c5aa993b | 1434 | void |
dfaae886 | 1435 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1436 | print_source_lines_flags flags) |
c906108c | 1437 | { |
dfaae886 | 1438 | print_source_lines_base (s, line, stopline, flags); |
c906108c | 1439 | } |
0e2a2133 AB |
1440 | |
1441 | /* See source.h. */ | |
1442 | ||
1443 | void | |
1444 | print_source_lines (struct symtab *s, source_lines_range line_range, | |
1445 | print_source_lines_flags flags) | |
1446 | { | |
1447 | print_source_lines_base (s, line_range.startline (), | |
1448 | line_range.stopline (), flags); | |
1449 | } | |
1450 | ||
1451 | ||
c906108c | 1452 | \f |
c906108c SS |
1453 | /* Print info on range of pc's in a specified line. */ |
1454 | ||
1455 | static void | |
1d12d88f | 1456 | info_line_command (const char *arg, int from_tty) |
c906108c | 1457 | { |
c906108c | 1458 | CORE_ADDR start_pc, end_pc; |
c906108c | 1459 | |
6c5b2ebe PA |
1460 | std::vector<symtab_and_line> decoded_sals; |
1461 | symtab_and_line curr_sal; | |
1462 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1463 | |
1464 | if (arg == 0) | |
1465 | { | |
1dd58850 TT |
1466 | current_source_location *loc |
1467 | = get_source_location (current_program_space); | |
a75cd9a2 | 1468 | curr_sal.symtab = loc->symtab (); |
6c5b2ebe | 1469 | curr_sal.pspace = current_program_space; |
5166082f | 1470 | if (last_line_listed != 0) |
6c5b2ebe | 1471 | curr_sal.line = last_line_listed; |
5166082f | 1472 | else |
a75cd9a2 | 1473 | curr_sal.line = loc->line (); |
5166082f | 1474 | |
6c5b2ebe | 1475 | sals = curr_sal; |
c906108c SS |
1476 | } |
1477 | else | |
1478 | { | |
6c5b2ebe PA |
1479 | decoded_sals = decode_line_with_last_displayed (arg, |
1480 | DECODE_LINE_LIST_MODE); | |
1481 | sals = decoded_sals; | |
c5aa993b | 1482 | |
c906108c SS |
1483 | dont_repeat (); |
1484 | } | |
1485 | ||
1486 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1487 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1488 | for (const auto &sal : sals) |
c906108c | 1489 | { |
f8eba3c6 TT |
1490 | if (sal.pspace != current_program_space) |
1491 | continue; | |
c5aa993b | 1492 | |
c906108c SS |
1493 | if (sal.symtab == 0) |
1494 | { | |
5af949e3 UW |
1495 | struct gdbarch *gdbarch = get_current_arch (); |
1496 | ||
a3f17187 | 1497 | printf_filtered (_("No line number information available")); |
c906108c SS |
1498 | if (sal.pc != 0) |
1499 | { | |
1500 | /* This is useful for "info line *0x7f34". If we can't tell the | |
dda83cd7 SM |
1501 | user about a source line, at least let them have the symbolic |
1502 | address. */ | |
c906108c SS |
1503 | printf_filtered (" for address "); |
1504 | wrap_here (" "); | |
5af949e3 | 1505 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1506 | } |
1507 | else | |
1508 | printf_filtered ("."); | |
1509 | printf_filtered ("\n"); | |
1510 | } | |
1511 | else if (sal.line > 0 | |
1512 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1513 | { | |
08feed99 | 1514 | struct gdbarch *gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
5af949e3 | 1515 | |
c906108c SS |
1516 | if (start_pc == end_pc) |
1517 | { | |
1518 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1519 | sal.line, |
1520 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1521 | wrap_here (" "); |
1522 | printf_filtered (" is at address "); | |
5af949e3 | 1523 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1524 | wrap_here (" "); |
1525 | printf_filtered (" but contains no code.\n"); | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1530 | sal.line, |
1531 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1532 | wrap_here (" "); |
1533 | printf_filtered (" starts at address "); | |
5af949e3 | 1534 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1535 | wrap_here (" "); |
1536 | printf_filtered (" and ends at "); | |
5af949e3 | 1537 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1538 | printf_filtered (".\n"); |
1539 | } | |
1540 | ||
1541 | /* x/i should display this line's code. */ | |
5af949e3 | 1542 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1543 | |
1544 | /* Repeating "info line" should do the following line. */ | |
1545 | last_line_listed = sal.line + 1; | |
1546 | ||
1547 | /* If this is the only line, show the source code. If it could | |
1548 | not find the file, don't do anything special. */ | |
7c13f4e8 | 1549 | if (annotation_level > 0 && sals.size () == 1) |
0d3abd8c | 1550 | annotate_source_line (sal.symtab, sal.line, 0, start_pc); |
c906108c SS |
1551 | } |
1552 | else | |
1553 | /* Is there any case in which we get here, and have an address | |
1554 | which the user would want to see? If we have debugging symbols | |
1555 | and no line numbers? */ | |
a3f17187 | 1556 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1557 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1558 | } |
c906108c SS |
1559 | } |
1560 | \f | |
1561 | /* Commands to search the source file for a regexp. */ | |
1562 | ||
73e8dc90 PA |
1563 | /* Helper for forward_search_command/reverse_search_command. FORWARD |
1564 | indicates direction: true for forward, false for | |
1565 | backward/reverse. */ | |
1566 | ||
c906108c | 1567 | static void |
73e8dc90 | 1568 | search_command_helper (const char *regex, int from_tty, bool forward) |
c906108c | 1569 | { |
73e8dc90 | 1570 | const char *msg = re_comp (regex); |
c906108c | 1571 | if (msg) |
8a3fe4f8 | 1572 | error (("%s"), msg); |
c906108c | 1573 | |
1dd58850 TT |
1574 | current_source_location *loc |
1575 | = get_source_location (current_program_space); | |
a75cd9a2 | 1576 | if (loc->symtab () == nullptr) |
c906108c SS |
1577 | select_source_symtab (0); |
1578 | ||
a75cd9a2 | 1579 | scoped_fd desc (open_source_file (loc->symtab ())); |
77ad7394 | 1580 | if (desc.get () < 0) |
a75cd9a2 | 1581 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1582 | |
73e8dc90 PA |
1583 | int line = (forward |
1584 | ? last_line_listed + 1 | |
1585 | : last_line_listed - 1); | |
1586 | ||
cb44333d TT |
1587 | const std::vector<off_t> *offsets; |
1588 | if (line < 1 | |
a75cd9a2 | 1589 | || !g_source_cache.get_line_charpos (loc->symtab (), &offsets) |
cb44333d | 1590 | || line > offsets->size ()) |
9fe4a216 | 1591 | error (_("Expression not found")); |
c906108c | 1592 | |
cb44333d | 1593 | if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0) |
a75cd9a2 | 1594 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1595 | |
2179fbc3 | 1596 | gdb_file_up stream = desc.to_file (FDOPEN_MODE); |
4a45905b | 1597 | clearerr (stream.get ()); |
73e8dc90 PA |
1598 | |
1599 | gdb::def_vector<char> buf; | |
1600 | buf.reserve (256); | |
1601 | ||
c5aa993b JM |
1602 | while (1) |
1603 | { | |
73e8dc90 | 1604 | buf.resize (0); |
c5aa993b | 1605 | |
73e8dc90 | 1606 | int c = fgetc (stream.get ()); |
c5aa993b JM |
1607 | if (c == EOF) |
1608 | break; | |
1609 | do | |
c906108c | 1610 | { |
73e8dc90 | 1611 | buf.push_back (c); |
c906108c | 1612 | } |
4a45905b | 1613 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1614 | |
7be570e7 | 1615 | /* Remove the \r, if any, at the end of the line, otherwise |
dda83cd7 | 1616 | regular expressions that end with $ or \n won't work. */ |
73e8dc90 PA |
1617 | size_t sz = buf.size (); |
1618 | if (sz >= 2 && buf[sz - 2] == '\r') | |
7be570e7 | 1619 | { |
73e8dc90 PA |
1620 | buf[sz - 2] = '\n'; |
1621 | buf.resize (sz - 1); | |
7be570e7 | 1622 | } |
7be570e7 | 1623 | |
c378eb4e | 1624 | /* We now have a source line in buf, null terminate and match. */ |
73e8dc90 PA |
1625 | buf.push_back ('\0'); |
1626 | if (re_exec (buf.data ()) > 0) | |
c5aa993b | 1627 | { |
c378eb4e | 1628 | /* Match! */ |
a75cd9a2 | 1629 | print_source_lines (loc->symtab (), line, line + 1, 0); |
4fa62494 | 1630 | set_internalvar_integer (lookup_internalvar ("_"), line); |
a75cd9a2 | 1631 | loc->set (loc->symtab (), std::max (line - lines_to_list / 2, 1)); |
c5aa993b JM |
1632 | return; |
1633 | } | |
73e8dc90 PA |
1634 | |
1635 | if (forward) | |
1636 | line++; | |
1637 | else | |
1638 | { | |
1639 | line--; | |
b18ca514 PW |
1640 | if (line < 1) |
1641 | break; | |
cb44333d | 1642 | if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0) |
73e8dc90 PA |
1643 | { |
1644 | const char *filename | |
a75cd9a2 | 1645 | = symtab_to_filename_for_display (loc->symtab ()); |
73e8dc90 PA |
1646 | perror_with_name (filename); |
1647 | } | |
1648 | } | |
c5aa993b | 1649 | } |
c906108c | 1650 | |
a3f17187 | 1651 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1652 | } |
1653 | ||
c906108c | 1654 | static void |
73e8dc90 | 1655 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1656 | { |
73e8dc90 PA |
1657 | search_command_helper (regex, from_tty, true); |
1658 | } | |
c906108c | 1659 | |
73e8dc90 PA |
1660 | static void |
1661 | reverse_search_command (const char *regex, int from_tty) | |
1662 | { | |
1663 | search_command_helper (regex, from_tty, false); | |
c906108c | 1664 | } |
2f61ca93 JB |
1665 | |
1666 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1667 | ||
1668 | static void | |
1669 | strip_trailing_directory_separator (char *path) | |
1670 | { | |
1671 | const int last = strlen (path) - 1; | |
1672 | ||
1673 | if (last < 0) | |
1674 | return; /* No stripping is needed if PATH is the empty string. */ | |
1675 | ||
1676 | if (IS_DIR_SEPARATOR (path[last])) | |
1677 | path[last] = '\0'; | |
1678 | } | |
1679 | ||
1680 | /* Return the path substitution rule that matches FROM. | |
1681 | Return NULL if no rule matches. */ | |
1682 | ||
1683 | static struct substitute_path_rule * | |
1684 | find_substitute_path_rule (const char *from) | |
1685 | { | |
1686 | struct substitute_path_rule *rule = substitute_path_rules; | |
1687 | ||
1688 | while (rule != NULL) | |
1689 | { | |
1690 | if (FILENAME_CMP (rule->from, from) == 0) | |
dda83cd7 | 1691 | return rule; |
2f61ca93 JB |
1692 | rule = rule->next; |
1693 | } | |
1694 | ||
1695 | return NULL; | |
1696 | } | |
1697 | ||
1698 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1699 | The new rule will replace FROM into TO. */ | |
1700 | ||
29b0e8a2 | 1701 | void |
2f61ca93 JB |
1702 | add_substitute_path_rule (char *from, char *to) |
1703 | { | |
1704 | struct substitute_path_rule *rule; | |
8d749320 | 1705 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1706 | |
2f61ca93 JB |
1707 | new_rule->from = xstrdup (from); |
1708 | new_rule->to = xstrdup (to); | |
1709 | new_rule->next = NULL; | |
1710 | ||
1711 | /* If the list of rules are empty, then insert the new rule | |
1712 | at the head of the list. */ | |
1713 | ||
1714 | if (substitute_path_rules == NULL) | |
1715 | { | |
1716 | substitute_path_rules = new_rule; | |
1717 | return; | |
1718 | } | |
1719 | ||
1720 | /* Otherwise, skip to the last rule in our list and then append | |
1721 | the new rule. */ | |
1722 | ||
1723 | rule = substitute_path_rules; | |
1724 | while (rule->next != NULL) | |
1725 | rule = rule->next; | |
1726 | ||
1727 | rule->next = new_rule; | |
1728 | } | |
1729 | ||
1730 | /* Remove the given source path substitution rule from the current list | |
1731 | of rules. The memory allocated for that rule is also deallocated. */ | |
1732 | ||
1733 | static void | |
1734 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1735 | { | |
1736 | if (rule == substitute_path_rules) | |
1737 | substitute_path_rules = rule->next; | |
1738 | else | |
1739 | { | |
1740 | struct substitute_path_rule *prev = substitute_path_rules; | |
1741 | ||
1742 | while (prev != NULL && prev->next != rule) | |
dda83cd7 | 1743 | prev = prev->next; |
2f61ca93 JB |
1744 | |
1745 | gdb_assert (prev != NULL); | |
1746 | ||
1747 | prev->next = rule->next; | |
1748 | } | |
1749 | ||
1750 | xfree (rule->from); | |
1751 | xfree (rule->to); | |
1752 | xfree (rule); | |
1753 | } | |
1754 | ||
1755 | /* Implement the "show substitute-path" command. */ | |
1756 | ||
1757 | static void | |
a0d65762 | 1758 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1759 | { |
1760 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1761 | char *from = NULL; |
1762 | ||
773a1edc | 1763 | gdb_argv argv (args); |
2f61ca93 JB |
1764 | |
1765 | /* We expect zero or one argument. */ | |
1766 | ||
1767 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1768 | error (_("Too many arguments in command")); | |
1769 | ||
1770 | if (argv != NULL && argv[0] != NULL) | |
1771 | from = argv[0]; | |
1772 | ||
1773 | /* Print the substitution rules. */ | |
1774 | ||
1775 | if (from != NULL) | |
1776 | printf_filtered | |
1777 | (_("Source path substitution rule matching `%s':\n"), from); | |
1778 | else | |
1779 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1780 | ||
1781 | while (rule != NULL) | |
1782 | { | |
1e2ccb61 | 1783 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
dda83cd7 | 1784 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
2f61ca93 JB |
1785 | rule = rule->next; |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* Implement the "unset substitute-path" command. */ | |
1790 | ||
1791 | static void | |
a0d65762 | 1792 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1793 | { |
1794 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1795 | gdb_argv argv (args); |
2f61ca93 JB |
1796 | char *from = NULL; |
1797 | int rule_found = 0; | |
1798 | ||
1799 | /* This function takes either 0 or 1 argument. */ | |
1800 | ||
1801 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1802 | error (_("Incorrect usage, too many arguments in command")); | |
1803 | ||
1804 | if (argv != NULL && argv[0] != NULL) | |
1805 | from = argv[0]; | |
1806 | ||
1807 | /* If the user asked for all the rules to be deleted, ask him | |
1808 | to confirm and give him a chance to abort before the action | |
1809 | is performed. */ | |
1810 | ||
1811 | if (from == NULL | |
1812 | && !query (_("Delete all source path substitution rules? "))) | |
1813 | error (_("Canceled")); | |
1814 | ||
1815 | /* Delete the rule matching the argument. No argument means that | |
1816 | all rules should be deleted. */ | |
1817 | ||
1818 | while (rule != NULL) | |
1819 | { | |
1820 | struct substitute_path_rule *next = rule->next; | |
1821 | ||
1822 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
dda83cd7 SM |
1823 | { |
1824 | delete_substitute_path_rule (rule); | |
1825 | rule_found = 1; | |
1826 | } | |
2f61ca93 JB |
1827 | |
1828 | rule = next; | |
1829 | } | |
1830 | ||
1831 | /* If the user asked for a specific rule to be deleted but | |
1832 | we could not find it, then report an error. */ | |
1833 | ||
1834 | if (from != NULL && !rule_found) | |
1835 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1836 | |
1837 | forget_cached_source_info (); | |
2f61ca93 JB |
1838 | } |
1839 | ||
1840 | /* Add a new source path substitution rule. */ | |
1841 | ||
1842 | static void | |
a0d65762 | 1843 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1844 | { |
2f61ca93 JB |
1845 | struct substitute_path_rule *rule; |
1846 | ||
773a1edc | 1847 | gdb_argv argv (args); |
2f61ca93 JB |
1848 | |
1849 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1850 | error (_("Incorrect usage, too few arguments in command")); | |
1851 | ||
1852 | if (argv[2] != NULL) | |
1853 | error (_("Incorrect usage, too many arguments in command")); | |
1854 | ||
1855 | if (*(argv[0]) == '\0') | |
1856 | error (_("First argument must be at least one character long")); | |
1857 | ||
1858 | /* Strip any trailing directory separator character in either FROM | |
1859 | or TO. The substitution rule already implicitly contains them. */ | |
1860 | strip_trailing_directory_separator (argv[0]); | |
1861 | strip_trailing_directory_separator (argv[1]); | |
1862 | ||
1863 | /* If a rule with the same "from" was previously defined, then | |
1864 | delete it. This new rule replaces it. */ | |
1865 | ||
1866 | rule = find_substitute_path_rule (argv[0]); | |
1867 | if (rule != NULL) | |
1868 | delete_substitute_path_rule (rule); | |
1869 | ||
1870 | /* Insert the new substitution rule. */ | |
1871 | ||
1872 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1873 | forget_cached_source_info (); |
2f61ca93 JB |
1874 | } |
1875 | ||
0e2a2133 AB |
1876 | /* See source.h. */ |
1877 | ||
1878 | source_lines_range::source_lines_range (int startline, | |
1879 | source_lines_range::direction dir) | |
1880 | { | |
1881 | if (dir == source_lines_range::FORWARD) | |
1882 | { | |
1883 | LONGEST end = static_cast <LONGEST> (startline) + get_lines_to_list (); | |
1884 | ||
1885 | if (end > INT_MAX) | |
1886 | end = INT_MAX; | |
1887 | ||
1888 | m_startline = startline; | |
1889 | m_stopline = static_cast <int> (end); | |
1890 | } | |
1891 | else | |
1892 | { | |
1893 | LONGEST start = static_cast <LONGEST> (startline) - get_lines_to_list (); | |
1894 | ||
1895 | if (start < 1) | |
1896 | start = 1; | |
1897 | ||
1898 | m_startline = static_cast <int> (start); | |
1899 | m_stopline = startline; | |
1900 | } | |
1901 | } | |
1902 | ||
c906108c | 1903 | \f |
6c265988 | 1904 | void _initialize_source (); |
c906108c | 1905 | void |
6c265988 | 1906 | _initialize_source () |
c906108c SS |
1907 | { |
1908 | struct cmd_list_element *c; | |
433759f7 | 1909 | |
c906108c SS |
1910 | init_source_path (); |
1911 | ||
1912 | /* The intention is to use POSIX Basic Regular Expressions. | |
1913 | Always use the GNU regex routine for consistency across all hosts. | |
1914 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1915 | just an approximation. */ | |
1916 | re_set_syntax (RE_SYNTAX_GREP); | |
1917 | ||
1a966eab AC |
1918 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1919 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1920 | Forget cached info on source file locations and line positions.\n\ |
1921 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1922 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1923 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1924 | &cmdlist); |
1925 | ||
1926 | if (dbx_commands) | |
c5aa993b | 1927 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1928 | |
5ba2abeb | 1929 | set_cmd_completer (c, filename_completer); |
c906108c | 1930 | |
99e7ae30 DE |
1931 | add_setshow_optional_filename_cmd ("directories", |
1932 | class_files, | |
1933 | &source_path, | |
1934 | _("\ | |
1935 | Set the search path for finding source files."), | |
1936 | _("\ | |
1937 | Show the search path for finding source files."), | |
1938 | _("\ | |
c906108c | 1939 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1940 | $cdir in the path means the compilation directory of the source file.\n\ |
1941 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1942 | appending these directories if necessary.\n\ | |
1943 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1944 | set_directories_command, | |
1945 | show_directories_command, | |
1946 | &setlist, &showlist); | |
c906108c | 1947 | |
11db9430 | 1948 | add_info ("source", info_source_command, |
1bedd215 | 1949 | _("Information about the current source file.")); |
c906108c | 1950 | |
11db9430 | 1951 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1952 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1953 | Line can be specified as\n\ |
1954 | LINENUM, to list around that line in current file,\n\ | |
1955 | FILE:LINENUM, to list around that line in that file,\n\ | |
1956 | FUNCTION, to list around beginning of that function,\n\ | |
1957 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1958 | Default is to describe the last source line that was listed.\n\n\ |
1959 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1960 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1961 | The address is also stored as the value of \"$_\".")); |
c906108c | 1962 | |
1bedd215 AC |
1963 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1964 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1965 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1966 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1967 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1968 | |
1bedd215 AC |
1969 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1970 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1971 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1972 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1973 | |
7f7cc265 | 1974 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1975 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1976 | Show number of source lines gdb will list by default."), _("\ |
1977 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1978 | the \"list\" argument explicitly specifies some other number).\n\ | |
1979 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1980 | NULL, |
1981 | show_lines_to_list, | |
1982 | &setlist, &showlist); | |
2f61ca93 JB |
1983 | |
1984 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
dda83cd7 | 1985 | _("\ |
590042fc | 1986 | Add a substitution rule to rewrite the source directories.\n\ |
7ef2b397 | 1987 | Usage: set substitute-path FROM TO\n\ |
590042fc PW |
1988 | The rule is applied only if the directory name starts with FROM\n\ |
1989 | directly followed by a directory separator.\n\ | |
7ef2b397 JB |
1990 | If a substitution rule was previously set for FROM, the old rule\n\ |
1991 | is replaced by the new one."), | |
dda83cd7 | 1992 | &setlist); |
2f61ca93 JB |
1993 | |
1994 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
dda83cd7 | 1995 | _("\ |
590042fc | 1996 | Delete one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1997 | Usage: unset substitute-path [FROM]\n\ |
590042fc | 1998 | Delete the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 JB |
1999 | is not specified, all substituting rules are deleted.\n\ |
2000 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
dda83cd7 | 2001 | &unsetlist); |
2f61ca93 JB |
2002 | |
2003 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
dda83cd7 | 2004 | _("\ |
590042fc | 2005 | Show one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 2006 | Usage: show substitute-path [FROM]\n\ |
590042fc | 2007 | Print the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 | 2008 | is not specified, print all substitution rules."), |
dda83cd7 | 2009 | &showlist); |
1b56eb55 JK |
2010 | |
2011 | add_setshow_enum_cmd ("filename-display", class_files, | |
2012 | filename_display_kind_names, | |
2013 | &filename_display_string, _("\ | |
2014 | Set how to display filenames."), _("\ | |
2015 | Show how to display filenames."), _("\ | |
2016 | filename-display can be:\n\ | |
2017 | basename - display only basename of a filename\n\ | |
2018 | relative - display a filename relative to the compilation directory\n\ | |
2019 | absolute - display an absolute filename\n\ | |
2020 | By default, relative filenames are displayed."), | |
2021 | NULL, | |
2022 | show_filename_display_string, | |
2023 | &setlist, &showlist); | |
2024 | ||
c906108c | 2025 | } |