Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
b811d2c2 | 2 | Copyright (C) 1986-2020 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); |
a75cd9a2 | 309 | loc->set (sal.symtab, std::max (sal.line - (lines_to_list - 1), 1)); |
5c281dbb | 310 | return; |
c906108c | 311 | } |
c5aa993b | 312 | |
8340a3fb LM |
313 | /* Alright; find the last file in the symtab list (ignoring .h's |
314 | and namespace symtabs). */ | |
c906108c | 315 | |
a75cd9a2 | 316 | struct symtab *new_symtab = nullptr; |
c906108c | 317 | |
2030c079 | 318 | for (objfile *ofp : current_program_space->objfiles ()) |
c906108c | 319 | { |
b669c953 | 320 | for (compunit_symtab *cu : ofp->compunits ()) |
c906108c | 321 | { |
8b31193a TT |
322 | for (symtab *symtab : compunit_filetabs (cu)) |
323 | { | |
324 | const char *name = symtab->filename; | |
325 | int len = strlen (name); | |
326 | ||
327 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
328 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
a75cd9a2 | 329 | new_symtab = symtab; |
8b31193a | 330 | } |
c906108c SS |
331 | } |
332 | } | |
6c95b8df | 333 | |
a75cd9a2 TT |
334 | loc->set (new_symtab, 1); |
335 | if (new_symtab != nullptr) | |
c906108c SS |
336 | return; |
337 | ||
2030c079 | 338 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
339 | { |
340 | if (objfile->sf) | |
341 | s = objfile->sf->qf->find_last_source_symtab (objfile); | |
342 | if (s) | |
a75cd9a2 TT |
343 | new_symtab = s; |
344 | } | |
345 | if (new_symtab != nullptr) | |
346 | { | |
347 | loc->set (new_symtab,1); | |
348 | return; | |
aed57c53 | 349 | } |
c906108c | 350 | |
8a3fe4f8 | 351 | error (_("Can't find a default source file")); |
c906108c SS |
352 | } |
353 | \f | |
99e7ae30 DE |
354 | /* Handler for "set directories path-list" command. |
355 | "set dir mumble" doesn't prepend paths, it resets the entire | |
356 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
357 | ||
358 | static void | |
eb4c3f4a TT |
359 | set_directories_command (const char *args, |
360 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
361 | { |
362 | /* This is the value that was set. | |
363 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
364 | char *set_path = source_path; | |
365 | ||
366 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
367 | the list by calling init_source_path. If they appear earlier in | |
368 | SET_PATH then mod_path will move them appropriately. | |
369 | mod_path will also remove duplicates. */ | |
370 | init_source_path (); | |
371 | if (*set_path != '\0') | |
372 | mod_path (set_path, &source_path); | |
373 | ||
374 | xfree (set_path); | |
375 | } | |
376 | ||
377 | /* Print the list of source directories. | |
378 | This is used by the "ld" command, so it has the signature of a command | |
379 | function. */ | |
380 | ||
c906108c | 381 | static void |
99e7ae30 | 382 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
383 | { |
384 | puts_filtered ("Source directories searched: "); | |
385 | puts_filtered (source_path); | |
386 | puts_filtered ("\n"); | |
387 | } | |
388 | ||
99e7ae30 DE |
389 | /* Handler for "show directories" command. */ |
390 | ||
391 | static void | |
392 | show_directories_command (struct ui_file *file, int from_tty, | |
393 | struct cmd_list_element *c, const char *value) | |
394 | { | |
395 | show_directories_1 (NULL, from_tty); | |
396 | } | |
397 | ||
583068ca | 398 | /* See source.h. */ |
00174a86 TT |
399 | |
400 | void | |
401 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
402 | { | |
b669c953 | 403 | for (compunit_symtab *cu : objfile->compunits ()) |
00174a86 | 404 | { |
d5da8b3c | 405 | for (symtab *s : compunit_filetabs (cu)) |
00174a86 | 406 | { |
d5da8b3c TT |
407 | if (s->fullname != NULL) |
408 | { | |
409 | xfree (s->fullname); | |
410 | s->fullname = NULL; | |
411 | } | |
00174a86 | 412 | } |
00174a86 | 413 | } |
6f809020 DE |
414 | |
415 | if (objfile->sf) | |
416 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
417 | } |
418 | ||
583068ca | 419 | /* See source.h. */ |
c906108c SS |
420 | |
421 | void | |
fba45db2 | 422 | forget_cached_source_info (void) |
c906108c | 423 | { |
6c95b8df | 424 | struct program_space *pspace; |
c906108c | 425 | |
6c95b8df | 426 | ALL_PSPACES (pspace) |
2030c079 | 427 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
428 | { |
429 | forget_cached_source_info_for_objfile (objfile); | |
430 | } | |
c4e86dd4 | 431 | |
62f29fda | 432 | g_source_cache.clear (); |
c4e86dd4 | 433 | last_source_visited = NULL; |
c906108c SS |
434 | } |
435 | ||
436 | void | |
fba45db2 | 437 | init_source_path (void) |
c906108c SS |
438 | { |
439 | char buf[20]; | |
440 | ||
08850b56 | 441 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 442 | source_path = xstrdup (buf); |
c906108c SS |
443 | forget_cached_source_info (); |
444 | } | |
445 | ||
446 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 447 | |
28da1647 | 448 | static void |
5fed81ff | 449 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
450 | { |
451 | dont_repeat (); | |
c378eb4e | 452 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
453 | if (dirname == 0) |
454 | { | |
80618b99 | 455 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 456 | { |
b8c9b27d | 457 | xfree (source_path); |
c906108c SS |
458 | init_source_path (); |
459 | } | |
460 | } | |
461 | else | |
462 | { | |
463 | mod_path (dirname, &source_path); | |
c4e86dd4 | 464 | forget_cached_source_info (); |
c906108c SS |
465 | } |
466 | if (from_tty) | |
99e7ae30 | 467 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
468 | } |
469 | ||
13d35ae5 AS |
470 | /* Add a path given with the -d command line switch. |
471 | This will not be quoted so we must not treat spaces as separators. */ | |
472 | ||
473 | void | |
5614fb77 | 474 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
475 | { |
476 | add_path (dirname, &source_path, 0); | |
477 | } | |
478 | ||
c906108c SS |
479 | /* Add zero or more directories to the front of an arbitrary path. */ |
480 | ||
481 | void | |
5614fb77 | 482 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
483 | { |
484 | add_path (dirname, which_path, 1); | |
485 | } | |
486 | ||
487 | /* Workhorse of mod_path. Takes an extra argument to determine | |
488 | if dirname should be parsed for separators that indicate multiple | |
489 | directories. This allows for interfaces that pre-parse the dirname | |
490 | and allow specification of traditional separator characters such | |
c378eb4e | 491 | as space or tab. */ |
c04e0a08 JJ |
492 | |
493 | void | |
5614fb77 | 494 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
495 | { |
496 | char *old = *which_path; | |
497 | int prefix = 0; | |
e80aaf61 | 498 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
499 | |
500 | if (dirname == 0) | |
501 | return; | |
502 | ||
13d35ae5 AS |
503 | if (parse_separators) |
504 | { | |
505 | /* This will properly parse the space and tab separators | |
e4ab2fad | 506 | and any quotes that may exist. */ |
773a1edc | 507 | gdb_argv argv (dirname); |
e4ab2fad | 508 | |
773a1edc TT |
509 | for (char *arg : argv) |
510 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
511 | } |
512 | else | |
e80aaf61 | 513 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 514 | |
e80aaf61 | 515 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) |
c906108c | 516 | { |
e80aaf61 | 517 | char *name = name_up.get (); |
aa1ee363 | 518 | char *p; |
c906108c | 519 | struct stat st; |
db68fbe2 | 520 | gdb::unique_xmalloc_ptr<char> new_name_holder; |
c906108c | 521 | |
e4ab2fad JK |
522 | /* Spaces and tabs will have been removed by buildargv(). |
523 | NAME is the start of the directory. | |
524 | P is the '\0' following the end. */ | |
525 | p = name + strlen (name); | |
13d35ae5 AS |
526 | |
527 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 528 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 529 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 530 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 531 | #endif |
13d35ae5 | 532 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 533 | /* Sigh. "foo/" => "foo" */ |
c906108c | 534 | --p; |
c906108c SS |
535 | *p = '\0'; |
536 | ||
7be570e7 | 537 | while (p > name && p[-1] == '.') |
c906108c SS |
538 | { |
539 | if (p - name == 1) | |
540 | { | |
541 | /* "." => getwd (). */ | |
542 | name = current_directory; | |
543 | goto append; | |
544 | } | |
fe4e3eb8 | 545 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
546 | { |
547 | if (p - name == 2) | |
548 | { | |
549 | /* "/." => "/". */ | |
550 | *--p = '\0'; | |
551 | goto append; | |
552 | } | |
553 | else | |
554 | { | |
555 | /* "...foo/." => "...foo". */ | |
556 | p -= 2; | |
557 | *p = '\0'; | |
558 | continue; | |
559 | } | |
560 | } | |
561 | else | |
562 | break; | |
563 | } | |
564 | ||
565 | if (name[0] == '~') | |
db68fbe2 | 566 | new_name_holder.reset (tilde_expand (name)); |
c3690141 | 567 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 568 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
db68fbe2 | 569 | new_name_holder.reset (concat (name, ".", (char *) NULL)); |
7be570e7 | 570 | #endif |
fe4e3eb8 | 571 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
ff8577f6 | 572 | new_name_holder = gdb_abspath (name); |
c906108c | 573 | else |
db68fbe2 TT |
574 | new_name_holder.reset (savestring (name, p - name)); |
575 | name = new_name_holder.get (); | |
c906108c SS |
576 | |
577 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
578 | if (name[0] != '$') |
579 | { | |
580 | /* These are warnings, not errors, since we don't want a | |
581 | non-existent directory in a .gdbinit file to stop processing | |
582 | of the .gdbinit file. | |
583 | ||
584 | Whether they get added to the path is more debatable. Current | |
585 | answer is yes, in case the user wants to go make the directory | |
586 | or whatever. If the directory continues to not exist/not be | |
587 | a directory/etc, then having them in the path should be | |
588 | harmless. */ | |
589 | if (stat (name, &st) < 0) | |
590 | { | |
591 | int save_errno = errno; | |
433759f7 | 592 | |
c5aa993b JM |
593 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
594 | print_sys_errmsg (name, save_errno); | |
595 | } | |
596 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 597 | warning (_("%s is not a directory."), name); |
c5aa993b | 598 | } |
c906108c SS |
599 | |
600 | append: | |
601 | { | |
aa1ee363 | 602 | unsigned int len = strlen (name); |
5ee4ed9f | 603 | char tinybuf[2]; |
c906108c SS |
604 | |
605 | p = *which_path; | |
5e3f4fab | 606 | while (1) |
c906108c | 607 | { |
5e3f4fab EBM |
608 | /* FIXME: we should use realpath() or its work-alike |
609 | before comparing. Then all the code above which | |
610 | removes excess slashes and dots could simply go away. */ | |
611 | if (!filename_ncmp (p, name, len) | |
612 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
613 | { | |
614 | /* Found it in the search path, remove old copy. */ | |
615 | if (p > *which_path) | |
616 | { | |
617 | /* Back over leading separator. */ | |
618 | p--; | |
619 | } | |
620 | if (prefix > p - *which_path) | |
621 | { | |
622 | /* Same dir twice in one cmd. */ | |
623 | goto skip_dup; | |
624 | } | |
625 | /* Copy from next '\0' or ':'. */ | |
626 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
627 | } | |
628 | p = strchr (p, DIRNAME_SEPARATOR); | |
629 | if (p != 0) | |
630 | ++p; | |
631 | else | |
632 | break; | |
c906108c | 633 | } |
c906108c | 634 | |
5ee4ed9f JK |
635 | tinybuf[0] = DIRNAME_SEPARATOR; |
636 | tinybuf[1] = '\0'; | |
c906108c | 637 | |
5ee4ed9f JK |
638 | /* If we have already tacked on a name(s) in this command, |
639 | be sure they stay on the front as we tack on some | |
640 | more. */ | |
641 | if (prefix) | |
642 | { | |
643 | char *temp, c; | |
644 | ||
645 | c = old[prefix]; | |
646 | old[prefix] = '\0'; | |
647 | temp = concat (old, tinybuf, name, (char *)NULL); | |
648 | old[prefix] = c; | |
649 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
650 | prefix = strlen (temp); | |
651 | xfree (temp); | |
652 | } | |
653 | else | |
654 | { | |
655 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
656 | old, (char *)NULL); | |
657 | prefix = strlen (name); | |
c906108c | 658 | } |
5ee4ed9f JK |
659 | xfree (old); |
660 | old = *which_path; | |
c906108c | 661 | } |
82ae4854 | 662 | skip_dup: |
b27cf2b3 | 663 | ; |
c5aa993b | 664 | } |
c906108c SS |
665 | } |
666 | ||
667 | ||
668 | static void | |
1d12d88f | 669 | info_source_command (const char *ignore, int from_tty) |
c906108c | 670 | { |
1dd58850 TT |
671 | current_source_location *loc |
672 | = get_source_location (current_program_space); | |
a75cd9a2 | 673 | struct symtab *s = loc->symtab (); |
b6577aab | 674 | struct compunit_symtab *cust; |
c906108c SS |
675 | |
676 | if (!s) | |
677 | { | |
a3f17187 | 678 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
679 | return; |
680 | } | |
b6577aab DE |
681 | |
682 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 683 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
684 | if (SYMTAB_DIRNAME (s) != NULL) |
685 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 686 | if (s->fullname) |
a3f17187 | 687 | printf_filtered (_("Located in %s\n"), s->fullname); |
cb44333d TT |
688 | const std::vector<off_t> *offsets; |
689 | if (g_source_cache.get_line_charpos (s, &offsets)) | |
690 | printf_filtered (_("Contains %d line%s.\n"), (int) offsets->size (), | |
691 | offsets->size () == 1 ? "" : "s"); | |
c906108c | 692 | |
a3f17187 | 693 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
694 | printf_filtered (_("Producer is %s.\n"), |
695 | COMPUNIT_PRODUCER (cust) != NULL | |
696 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 697 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 698 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 699 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 700 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 701 | ? "Includes" : "Does not include"); |
c906108c | 702 | } |
c5aa993b | 703 | \f |
c906108c | 704 | |
f1b620e9 MG |
705 | /* Helper function to remove characters from the start of PATH so that |
706 | PATH can then be appended to a directory name. We remove leading drive | |
707 | letters (for dos) as well as leading '/' characters and './' | |
708 | sequences. */ | |
709 | ||
cb8c24b6 | 710 | static const char * |
f1b620e9 MG |
711 | prepare_path_for_appending (const char *path) |
712 | { | |
713 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ | |
714 | if (HAS_DRIVE_SPEC (path)) | |
715 | path = STRIP_DRIVE_SPEC (path); | |
716 | ||
717 | const char *old_path; | |
718 | do | |
719 | { | |
720 | old_path = path; | |
721 | ||
722 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ | |
723 | while (IS_DIR_SEPARATOR(path[0])) | |
724 | path++; | |
725 | ||
726 | /* ./foo => foo */ | |
727 | while (path[0] == '.' && IS_DIR_SEPARATOR (path[1])) | |
728 | path += 2; | |
729 | } | |
730 | while (old_path != path); | |
731 | ||
732 | return path; | |
733 | } | |
734 | ||
c906108c | 735 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
736 | using mode MODE in the calls to open. You cannot use this function to |
737 | create files (O_CREAT). | |
c906108c | 738 | |
014d698b EZ |
739 | OPTS specifies the function behaviour in specific cases. |
740 | ||
741 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 742 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
743 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
744 | disables searching of the path (this is so that "exec-file ./foo" or | |
745 | "symbol-file ./foo" insures that you get that particular version of | |
746 | foo or an error message). | |
c906108c | 747 | |
014d698b EZ |
748 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
749 | searched in path (we usually want this for source files but not for | |
750 | executables). | |
751 | ||
e7a8479f | 752 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 753 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
754 | have to take special pains to avoid doubling the "/" between the directory |
755 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
756 | source file name!!! | |
757 | ||
492c0ab7 JK |
758 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
759 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
760 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
761 | effect. | |
1f0c4988 | 762 | |
c906108c SS |
763 | If a file is found, return the descriptor. |
764 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
765 | ||
766 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 767 | >>>> eg executable, non-directory. */ |
c906108c | 768 | int |
24b9144d | 769 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 770 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 771 | { |
52f0bd74 AC |
772 | int fd; |
773 | char *filename; | |
c906108c | 774 | int alloclen; |
79b289e2 PA |
775 | /* The errno set for the last name we tried to open (and |
776 | failed). */ | |
777 | int last_errno = 0; | |
e80aaf61 | 778 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 779 | |
fbdebf46 JK |
780 | /* The open syscall MODE parameter is not specified. */ |
781 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
782 | gdb_assert (string != NULL); |
783 | ||
784 | /* A file with an empty name cannot possibly exist. Report a failure | |
785 | without further checking. | |
786 | ||
787 | This is an optimization which also defends us against buggy | |
788 | implementations of the "stat" function. For instance, we have | |
789 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
790 | when the debugger is started with an empty argument. */ | |
791 | if (string[0] == '\0') | |
792 | { | |
793 | errno = ENOENT; | |
794 | return -1; | |
795 | } | |
fbdebf46 | 796 | |
c906108c SS |
797 | if (!path) |
798 | path = "."; | |
799 | ||
c906108c | 800 | mode |= O_BINARY; |
c906108c | 801 | |
014d698b | 802 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 803 | { |
a55411b9 | 804 | int i, reg_file_errno; |
072b1022 | 805 | |
a55411b9 | 806 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 807 | { |
224c3ddb | 808 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 809 | strcpy (filename, string); |
614c279d | 810 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
811 | if (fd >= 0) |
812 | goto done; | |
a55411b9 | 813 | last_errno = errno; |
072b1022 DJ |
814 | } |
815 | else | |
3f565f1e DJ |
816 | { |
817 | filename = NULL; | |
818 | fd = -1; | |
a55411b9 | 819 | last_errno = reg_file_errno; |
3f565f1e | 820 | } |
072b1022 | 821 | |
014d698b EZ |
822 | if (!(opts & OPF_SEARCH_IN_PATH)) |
823 | for (i = 0; string[i]; i++) | |
824 | if (IS_DIR_SEPARATOR (string[i])) | |
825 | goto done; | |
c906108c SS |
826 | } |
827 | ||
f1b620e9 MG |
828 | /* Remove characters from the start of PATH that we don't need when PATH |
829 | is appended to a directory name. */ | |
830 | string = prepare_path_for_appending (string); | |
c906108c SS |
831 | |
832 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 833 | filename = (char *) alloca (alloclen); |
c906108c | 834 | fd = -1; |
79b289e2 | 835 | last_errno = ENOENT; |
e4ab2fad JK |
836 | |
837 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 838 | |
e80aaf61 | 839 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 840 | { |
e80aaf61 | 841 | char *dir = dir_up.get (); |
e4ab2fad | 842 | size_t len = strlen (dir); |
a55411b9 | 843 | int reg_file_errno; |
c906108c | 844 | |
e4ab2fad | 845 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
846 | { |
847 | /* Name is $cwd -- insert current directory name instead. */ | |
848 | int newlen; | |
849 | ||
c378eb4e | 850 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
851 | len = strlen (current_directory); |
852 | newlen = len + strlen (string) + 2; | |
853 | if (newlen > alloclen) | |
854 | { | |
855 | alloclen = newlen; | |
224c3ddb | 856 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
857 | } |
858 | strcpy (filename, current_directory); | |
859 | } | |
ebd86fb5 TJB |
860 | else if (strchr(dir, '~')) |
861 | { | |
862 | /* See whether we need to expand the tilde. */ | |
863 | int newlen; | |
ebd86fb5 | 864 | |
ee0c3293 | 865 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
866 | |
867 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 868 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
869 | newlen = len + strlen (string) + 2; |
870 | if (newlen > alloclen) | |
871 | { | |
872 | alloclen = newlen; | |
224c3ddb | 873 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 874 | } |
ee0c3293 | 875 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 876 | } |
c5aa993b JM |
877 | else |
878 | { | |
879 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 880 | strcpy (filename, dir); |
08001717 DE |
881 | |
882 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
883 | don't have enough information to expand it. The user *could* | |
884 | have an actual directory named '$cdir' but handling that would | |
885 | be confusing, it would mean different things in different | |
886 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
887 | We can get $cdir when loading scripts. When loading source files | |
888 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 889 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 890 | continue; |
c906108c | 891 | } |
c906108c | 892 | |
c378eb4e | 893 | /* Remove trailing slashes. */ |
fe4e3eb8 | 894 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
895 | filename[--len] = 0; |
896 | ||
c5aa993b | 897 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
898 | strcat (filename, string); |
899 | ||
a55411b9 | 900 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 901 | { |
614c279d | 902 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
903 | if (fd >= 0) |
904 | break; | |
79b289e2 | 905 | last_errno = errno; |
5e987968 | 906 | } |
a55411b9 DE |
907 | else |
908 | last_errno = reg_file_errno; | |
c906108c SS |
909 | } |
910 | ||
c5aa993b | 911 | done: |
c906108c SS |
912 | if (filename_opened) |
913 | { | |
f5b95b50 | 914 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 915 | if (fd < 0) |
e0cc99a6 | 916 | filename_opened->reset (NULL); |
04affae3 | 917 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 918 | *filename_opened = gdb_realpath (filename); |
c906108c | 919 | else |
e0cc99a6 | 920 | *filename_opened = gdb_abspath (filename); |
c906108c | 921 | } |
c906108c | 922 | |
79b289e2 | 923 | errno = last_errno; |
c906108c SS |
924 | return fd; |
925 | } | |
926 | ||
c5aa993b | 927 | |
c906108c SS |
928 | /* This is essentially a convenience, for clients that want the behaviour |
929 | of openp, using source_path, but that really don't want the file to be | |
930 | opened but want instead just to know what the full pathname is (as | |
931 | qualified against source_path). | |
932 | ||
933 | The current working directory is searched first. | |
934 | ||
935 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
936 | set to the fully-qualified pathname. | |
937 | ||
5e987968 | 938 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 939 | int |
e0cc99a6 TT |
940 | source_full_path_of (const char *filename, |
941 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 942 | { |
c5aa993b | 943 | int fd; |
c906108c | 944 | |
492c0ab7 JK |
945 | fd = openp (source_path, |
946 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
947 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
948 | if (fd < 0) |
949 | { | |
e0cc99a6 | 950 | full_pathname->reset (NULL); |
c906108c SS |
951 | return 0; |
952 | } | |
953 | ||
954 | close (fd); | |
955 | return 1; | |
956 | } | |
957 | ||
2f61ca93 JB |
958 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
959 | applied to PATH. */ | |
960 | ||
961 | static int | |
962 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
963 | const char *path) | |
964 | { | |
965 | const int from_len = strlen (rule->from); | |
966 | const int path_len = strlen (path); | |
2f61ca93 JB |
967 | |
968 | if (path_len < from_len) | |
969 | return 0; | |
970 | ||
971 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 972 | so the path should start with rule->from. */ |
2f61ca93 | 973 | |
486ef3b9 | 974 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
975 | return 0; |
976 | ||
977 | /* Make sure that the region in the path that matches the substitution | |
978 | rule is immediately followed by a directory separator (or the end of | |
979 | string character). */ | |
230cd560 | 980 | |
2f61ca93 JB |
981 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
982 | return 0; | |
983 | ||
984 | return 1; | |
985 | } | |
986 | ||
987 | /* Find the substitute-path rule that applies to PATH and return it. | |
988 | Return NULL if no rule applies. */ | |
989 | ||
990 | static struct substitute_path_rule * | |
991 | get_substitute_path_rule (const char *path) | |
992 | { | |
993 | struct substitute_path_rule *rule = substitute_path_rules; | |
994 | ||
995 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
996 | rule = rule->next; | |
997 | ||
998 | return rule; | |
999 | } | |
1000 | ||
1001 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
1002 | to PATH, then apply it and return the new path. |
1003 | ||
2f61ca93 JB |
1004 | Return NULL if no substitution rule was specified by the user, |
1005 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
1006 | |
1007 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
1008 | rewrite_source_path (const char *path) |
1009 | { | |
1010 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
1011 | char *new_path; | |
1012 | int from_len; | |
1013 | ||
1014 | if (rule == NULL) | |
1015 | return NULL; | |
1016 | ||
1017 | from_len = strlen (rule->from); | |
1018 | ||
1019 | /* Compute the rewritten path and return it. */ | |
1020 | ||
1021 | new_path = | |
1022 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
1023 | strcpy (new_path, rule->to); | |
1024 | strcat (new_path, path + from_len); | |
1025 | ||
0b581c69 | 1026 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
1027 | } |
1028 | ||
2179fbc3 TT |
1029 | /* See source.h. */ |
1030 | ||
1031 | scoped_fd | |
e2357892 | 1032 | find_and_open_source (const char *filename, |
5e987968 | 1033 | const char *dirname, |
e0cc99a6 | 1034 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
1035 | { |
1036 | char *path = source_path; | |
31889e00 | 1037 | const char *p; |
c906108c | 1038 | int result; |
c906108c | 1039 | |
c378eb4e | 1040 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1041 | |
57c22c6c | 1042 | if (*fullname) |
c906108c | 1043 | { |
2f61ca93 JB |
1044 | /* The user may have requested that source paths be rewritten |
1045 | according to substitution rules he provided. If a substitution | |
1046 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
1047 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
1048 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
1049 | |
1050 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 1051 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 1052 | |
e0cc99a6 | 1053 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 1054 | if (result >= 0) |
bc3aa6c3 | 1055 | { |
5abbbe1d | 1056 | *fullname = gdb_realpath (fullname->get ()); |
2179fbc3 | 1057 | return scoped_fd (result); |
bc3aa6c3 DE |
1058 | } |
1059 | ||
c378eb4e | 1060 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1061 | fullname->reset (NULL); |
c906108c SS |
1062 | } |
1063 | ||
0b581c69 | 1064 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1065 | if (dirname != NULL) |
c906108c | 1066 | { |
2f61ca93 JB |
1067 | /* If necessary, rewrite the compilation directory name according |
1068 | to the source path substitution rules specified by the user. */ | |
1069 | ||
0b581c69 | 1070 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1071 | |
1072 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1073 | dirname = rewritten_dirname.get (); |
1074 | ||
c378eb4e MS |
1075 | /* Replace a path entry of $cdir with the compilation directory |
1076 | name. */ | |
c906108c | 1077 | #define cdir_len 5 |
33d0e35a | 1078 | p = strstr (source_path, "$cdir"); |
c906108c | 1079 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1080 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1081 | { |
1082 | int len; | |
1083 | ||
1084 | path = (char *) | |
57c22c6c | 1085 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1086 | len = p - source_path; |
c5aa993b | 1087 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1088 | strcpy (path + len, dirname); /* new stuff */ |
1089 | strcat (path + len, source_path + len + cdir_len); /* After | |
1090 | $cdir */ | |
c906108c SS |
1091 | } |
1092 | } | |
8da2a1df | 1093 | |
4fa0265e РИ |
1094 | gdb::unique_xmalloc_ptr<char> rewritten_filename |
1095 | = rewrite_source_path (filename); | |
56163ce1 | 1096 | |
4fa0265e РИ |
1097 | if (rewritten_filename != NULL) |
1098 | filename = rewritten_filename.get (); | |
c906108c | 1099 | |
f1b620e9 | 1100 | /* Try to locate file using filename. */ |
5abbbe1d TT |
1101 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename, |
1102 | OPEN_MODE, fullname); | |
f1b620e9 MG |
1103 | if (result < 0 && dirname != NULL) |
1104 | { | |
1105 | /* Remove characters from the start of PATH that we don't need when | |
1106 | PATH is appended to a directory name. */ | |
1107 | const char *filename_start = prepare_path_for_appending (filename); | |
1108 | ||
1109 | /* Try to locate file using compilation dir + filename. This is | |
1110 | helpful if part of the compilation directory was removed, | |
1111 | e.g. using gcc's -fdebug-prefix-map, and we have added the missing | |
1112 | prefix to source_path. */ | |
1113 | std::string cdir_filename (dirname); | |
1114 | ||
1115 | /* Remove any trailing directory separators. */ | |
1116 | while (IS_DIR_SEPARATOR (cdir_filename.back ())) | |
1117 | cdir_filename.pop_back (); | |
1118 | ||
1119 | /* Add our own directory separator. */ | |
1120 | cdir_filename.append (SLASH_STRING); | |
1121 | cdir_filename.append (filename_start); | |
1122 | ||
5abbbe1d TT |
1123 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, |
1124 | cdir_filename.c_str (), OPEN_MODE, fullname); | |
f1b620e9 | 1125 | } |
c906108c SS |
1126 | if (result < 0) |
1127 | { | |
c378eb4e | 1128 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1129 | p = lbasename (filename); |
1130 | if (p != filename) | |
5abbbe1d TT |
1131 | result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p, |
1132 | OPEN_MODE, fullname); | |
c906108c | 1133 | } |
c906108c | 1134 | |
2179fbc3 | 1135 | return scoped_fd (result); |
c906108c SS |
1136 | } |
1137 | ||
57c22c6c BR |
1138 | /* Open a source file given a symtab S. Returns a file descriptor or |
1139 | negative number for error. | |
1140 | ||
85102364 | 1141 | This function is a convenience function to find_and_open_source. */ |
57c22c6c | 1142 | |
2179fbc3 | 1143 | scoped_fd |
57c22c6c BR |
1144 | open_source_file (struct symtab *s) |
1145 | { | |
5e987968 | 1146 | if (!s) |
2179fbc3 | 1147 | return scoped_fd (-1); |
57c22c6c | 1148 | |
54460946 | 1149 | gdb::unique_xmalloc_ptr<char> fullname (s->fullname); |
8e6a5953 | 1150 | s->fullname = NULL; |
2179fbc3 TT |
1151 | scoped_fd fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), |
1152 | &fullname); | |
0d79cdc4 AM |
1153 | |
1154 | if (fd.get () < 0) | |
1155 | { | |
1156 | if (SYMTAB_COMPUNIT (s) != nullptr) | |
1157 | { | |
1158 | const objfile *ofp = COMPUNIT_OBJFILE (SYMTAB_COMPUNIT (s)); | |
1159 | ||
1160 | std::string srcpath; | |
1161 | if (IS_ABSOLUTE_PATH (s->filename)) | |
1162 | srcpath = s->filename; | |
e5da1139 | 1163 | else if (SYMTAB_DIRNAME (s) != nullptr) |
0d79cdc4 AM |
1164 | { |
1165 | srcpath = SYMTAB_DIRNAME (s); | |
1166 | srcpath += SLASH_STRING; | |
1167 | srcpath += s->filename; | |
1168 | } | |
1169 | ||
1170 | const struct bfd_build_id *build_id = build_id_bfd_get (ofp->obfd); | |
1171 | ||
1172 | /* Query debuginfod for the source file. */ | |
e5da1139 | 1173 | if (build_id != nullptr && !srcpath.empty ()) |
0d79cdc4 AM |
1174 | fd = debuginfod_source_query (build_id->data, |
1175 | build_id->size, | |
1176 | srcpath.c_str (), | |
1177 | &fullname); | |
1178 | } | |
1179 | } | |
1180 | ||
e0cc99a6 TT |
1181 | s->fullname = fullname.release (); |
1182 | return fd; | |
57c22c6c BR |
1183 | } |
1184 | ||
1185 | /* Finds the fullname that a symtab represents. | |
c906108c | 1186 | |
f35a17b5 JK |
1187 | This functions finds the fullname and saves it in s->fullname. |
1188 | It will also return the value. | |
57c22c6c BR |
1189 | |
1190 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1191 | the expected fullname is used. Therefore the files does not have to |
1192 | exist. */ | |
256f06f3 | 1193 | |
0b0865da | 1194 | const char * |
57c22c6c | 1195 | symtab_to_fullname (struct symtab *s) |
c906108c | 1196 | { |
256f06f3 DE |
1197 | /* Use cached copy if we have it. |
1198 | We rely on forget_cached_source_info being called appropriately | |
1199 | to handle cases like the file being moved. */ | |
f35a17b5 | 1200 | if (s->fullname == NULL) |
5e987968 | 1201 | { |
2179fbc3 | 1202 | scoped_fd fd = open_source_file (s); |
f35a17b5 | 1203 | |
2179fbc3 | 1204 | if (fd.get () < 0) |
f0a4b570 | 1205 | { |
0b581c69 | 1206 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1207 | |
1208 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1209 | should report the pathname where GDB tried to find the file. */ | |
1210 | ||
ee6f8984 | 1211 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1212 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1213 | else |
0b581c69 TT |
1214 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1215 | s->filename, (char *) NULL)); | |
f0a4b570 | 1216 | |
0b581c69 | 1217 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1218 | if (s->fullname == NULL) |
0b581c69 | 1219 | s->fullname = fullname.release (); |
f0a4b570 | 1220 | } |
f35a17b5 | 1221 | } |
c906108c | 1222 | |
f35a17b5 | 1223 | return s->fullname; |
57c22c6c | 1224 | } |
1b56eb55 JK |
1225 | |
1226 | /* See commentary in source.h. */ | |
1227 | ||
1228 | const char * | |
1229 | symtab_to_filename_for_display (struct symtab *symtab) | |
1230 | { | |
1231 | if (filename_display_string == filename_display_basename) | |
1232 | return lbasename (symtab->filename); | |
1233 | else if (filename_display_string == filename_display_absolute) | |
1234 | return symtab_to_fullname (symtab); | |
1235 | else if (filename_display_string == filename_display_relative) | |
1236 | return symtab->filename; | |
1237 | else | |
1238 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1239 | } | |
c906108c | 1240 | |
00df30ae AB |
1241 | \f |
1242 | ||
c906108c | 1243 | /* Print source lines from the file of symtab S, |
c378eb4e | 1244 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1245 | |
1246 | static void | |
dfaae886 | 1247 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1248 | print_source_lines_flags flags) |
c906108c | 1249 | { |
b08b16c8 | 1250 | bool noprint = false; |
c906108c | 1251 | int nlines = stopline - line; |
79a45e25 | 1252 | struct ui_out *uiout = current_uiout; |
c906108c | 1253 | |
c378eb4e | 1254 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
1dd58850 TT |
1255 | current_source_location *loc |
1256 | = get_source_location (current_program_space); | |
1257 | ||
a75cd9a2 | 1258 | loc->set (s, line); |
c906108c | 1259 | first_line_listed = line; |
8b7fcda2 | 1260 | last_line_listed = line; |
c906108c | 1261 | |
3e43a32a | 1262 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1263 | number. */ |
112e8700 | 1264 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1265 | { |
c378eb4e | 1266 | /* Only prints "No such file or directory" once. */ |
b08b16c8 | 1267 | if (s == last_source_visited) |
c5aa993b | 1268 | { |
b08b16c8 | 1269 | if (last_source_error) |
2179fbc3 | 1270 | { |
b08b16c8 TT |
1271 | flags |= PRINT_SOURCE_LINES_NOERROR; |
1272 | noprint = true; | |
2179fbc3 | 1273 | } |
c5aa993b JM |
1274 | } |
1275 | else | |
1276 | { | |
b08b16c8 TT |
1277 | last_source_visited = s; |
1278 | scoped_fd desc = open_source_file (s); | |
1279 | last_source_error = desc.get () < 0; | |
1280 | if (last_source_error) | |
1281 | noprint = true; | |
c5aa993b | 1282 | } |
8b93c638 JM |
1283 | } |
1284 | else | |
1285 | { | |
8d297bbf | 1286 | flags |= PRINT_SOURCE_LINES_NOERROR; |
b08b16c8 | 1287 | noprint = true; |
8b93c638 | 1288 | } |
c906108c | 1289 | |
2179fbc3 | 1290 | if (noprint) |
c906108c | 1291 | { |
dfaae886 | 1292 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1293 | { |
05cba821 JK |
1294 | const char *filename = symtab_to_filename_for_display (s); |
1295 | int len = strlen (filename) + 100; | |
224c3ddb | 1296 | char *name = (char *) alloca (len); |
08850b56 | 1297 | |
05cba821 | 1298 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1299 | print_sys_errmsg (name, errno); |
1300 | } | |
1301 | else | |
fc0ae648 | 1302 | { |
381befee | 1303 | uiout->field_signed ("line", line); |
112e8700 | 1304 | uiout->text ("\tin "); |
56d397a3 | 1305 | |
23eb71e4 JK |
1306 | /* CLI expects only the "file" field. TUI expects only the |
1307 | "fullname" field (and TUI does break if "file" is printed). | |
1308 | MI expects both fields. ui_source_list is set only for CLI, | |
1309 | not for TUI. */ | |
112e8700 | 1310 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
cbe56571 | 1311 | uiout->field_string ("file", symtab_to_filename_for_display (s), |
e43b10e1 | 1312 | file_name_style.style ()); |
112e8700 | 1313 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) |
8f1b8b82 JK |
1314 | { |
1315 | const char *s_fullname = symtab_to_fullname (s); | |
1316 | char *local_fullname; | |
1317 | ||
1318 | /* ui_out_field_string may free S_FULLNAME by calling | |
1319 | open_source_file for it again. See e.g., | |
1320 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1321 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1322 | strcpy (local_fullname, s_fullname); |
1323 | ||
112e8700 | 1324 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1325 | } |
23eb71e4 | 1326 | |
112e8700 | 1327 | uiout->text ("\n"); |
fc0ae648 | 1328 | } |
c906108c SS |
1329 | |
1330 | return; | |
1331 | } | |
1332 | ||
ec98a4ad | 1333 | /* If the user requested a sequence of lines that seems to go backward |
0e2a2133 AB |
1334 | (from high to low line numbers) then we don't print anything. */ |
1335 | if (stopline <= line) | |
ec98a4ad AB |
1336 | return; |
1337 | ||
62f29fda TT |
1338 | std::string lines; |
1339 | if (!g_source_cache.get_source_lines (s, line, stopline - 1, &lines)) | |
cb44333d TT |
1340 | { |
1341 | const std::vector<off_t> *offsets = nullptr; | |
1342 | g_source_cache.get_line_charpos (s, &offsets); | |
1343 | error (_("Line number %d out of range; %s has %d lines."), | |
1344 | line, symtab_to_filename_for_display (s), | |
1345 | offsets == nullptr ? 0 : (int) offsets->size ()); | |
1346 | } | |
c906108c | 1347 | |
62f29fda | 1348 | const char *iter = lines.c_str (); |
a75cd9a2 | 1349 | int new_lineno = loc->line (); |
a0087920 | 1350 | while (nlines-- > 0 && *iter != '\0') |
c906108c | 1351 | { |
8b93c638 JM |
1352 | char buf[20]; |
1353 | ||
a75cd9a2 | 1354 | last_line_listed = loc->line (); |
4cd29721 MM |
1355 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1356 | { | |
112e8700 SM |
1357 | uiout->text (symtab_to_filename_for_display (s)); |
1358 | uiout->text (":"); | |
4cd29721 | 1359 | } |
a75cd9a2 | 1360 | xsnprintf (buf, sizeof (buf), "%d\t", new_lineno++); |
112e8700 | 1361 | uiout->text (buf); |
a0087920 TT |
1362 | |
1363 | while (*iter != '\0') | |
8b93c638 | 1364 | { |
a0087920 TT |
1365 | /* Find a run of characters that can be emitted at once. |
1366 | This is done so that escape sequences are kept | |
1367 | together. */ | |
1368 | const char *start = iter; | |
1369 | while (true) | |
8b93c638 | 1370 | { |
a0087920 TT |
1371 | int skip_bytes; |
1372 | ||
1373 | char c = *iter; | |
1374 | if (c == '\033' && skip_ansi_escape (iter, &skip_bytes)) | |
1375 | iter += skip_bytes; | |
62160ec9 | 1376 | else if (c >= 0 && c < 040 && c != '\t') |
a0087920 TT |
1377 | break; |
1378 | else if (c == 0177) | |
1379 | break; | |
1380 | else | |
1381 | ++iter; | |
8b93c638 | 1382 | } |
a0087920 | 1383 | if (iter > start) |
8b93c638 | 1384 | { |
a0087920 TT |
1385 | std::string text (start, iter); |
1386 | uiout->text (text.c_str ()); | |
8b93c638 | 1387 | } |
a0087920 TT |
1388 | if (*iter == '\r') |
1389 | { | |
1390 | /* Treat either \r or \r\n as a single newline. */ | |
1391 | ++iter; | |
1392 | if (*iter == '\n') | |
1393 | ++iter; | |
1394 | break; | |
1395 | } | |
1396 | else if (*iter == '\n') | |
1397 | { | |
1398 | ++iter; | |
1399 | break; | |
1400 | } | |
1401 | else if (*iter > 0 && *iter < 040) | |
8b93c638 | 1402 | { |
a0087920 | 1403 | xsnprintf (buf, sizeof (buf), "^%c", *iter + 0100); |
112e8700 | 1404 | uiout->text (buf); |
62160ec9 | 1405 | ++iter; |
8b93c638 | 1406 | } |
a0087920 | 1407 | else if (*iter == 0177) |
62160ec9 TT |
1408 | { |
1409 | uiout->text ("^?"); | |
1410 | ++iter; | |
1411 | } | |
8b93c638 | 1412 | } |
a0087920 | 1413 | uiout->text ("\n"); |
c906108c | 1414 | } |
a75cd9a2 TT |
1415 | |
1416 | loc->set (loc->symtab (), new_lineno); | |
c906108c SS |
1417 | } |
1418 | \f | |
583068ca AB |
1419 | |
1420 | /* See source.h. */ | |
c906108c | 1421 | |
c5aa993b | 1422 | void |
dfaae886 | 1423 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1424 | print_source_lines_flags flags) |
c906108c | 1425 | { |
dfaae886 | 1426 | print_source_lines_base (s, line, stopline, flags); |
c906108c | 1427 | } |
0e2a2133 AB |
1428 | |
1429 | /* See source.h. */ | |
1430 | ||
1431 | void | |
1432 | print_source_lines (struct symtab *s, source_lines_range line_range, | |
1433 | print_source_lines_flags flags) | |
1434 | { | |
1435 | print_source_lines_base (s, line_range.startline (), | |
1436 | line_range.stopline (), flags); | |
1437 | } | |
1438 | ||
1439 | ||
c906108c | 1440 | \f |
c906108c SS |
1441 | /* Print info on range of pc's in a specified line. */ |
1442 | ||
1443 | static void | |
1d12d88f | 1444 | info_line_command (const char *arg, int from_tty) |
c906108c | 1445 | { |
c906108c | 1446 | CORE_ADDR start_pc, end_pc; |
c906108c | 1447 | |
6c5b2ebe PA |
1448 | std::vector<symtab_and_line> decoded_sals; |
1449 | symtab_and_line curr_sal; | |
1450 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1451 | |
1452 | if (arg == 0) | |
1453 | { | |
1dd58850 TT |
1454 | current_source_location *loc |
1455 | = get_source_location (current_program_space); | |
a75cd9a2 | 1456 | curr_sal.symtab = loc->symtab (); |
6c5b2ebe | 1457 | curr_sal.pspace = current_program_space; |
5166082f | 1458 | if (last_line_listed != 0) |
6c5b2ebe | 1459 | curr_sal.line = last_line_listed; |
5166082f | 1460 | else |
a75cd9a2 | 1461 | curr_sal.line = loc->line (); |
5166082f | 1462 | |
6c5b2ebe | 1463 | sals = curr_sal; |
c906108c SS |
1464 | } |
1465 | else | |
1466 | { | |
6c5b2ebe PA |
1467 | decoded_sals = decode_line_with_last_displayed (arg, |
1468 | DECODE_LINE_LIST_MODE); | |
1469 | sals = decoded_sals; | |
c5aa993b | 1470 | |
c906108c SS |
1471 | dont_repeat (); |
1472 | } | |
1473 | ||
1474 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1475 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1476 | for (const auto &sal : sals) |
c906108c | 1477 | { |
f8eba3c6 TT |
1478 | if (sal.pspace != current_program_space) |
1479 | continue; | |
c5aa993b | 1480 | |
c906108c SS |
1481 | if (sal.symtab == 0) |
1482 | { | |
5af949e3 UW |
1483 | struct gdbarch *gdbarch = get_current_arch (); |
1484 | ||
a3f17187 | 1485 | printf_filtered (_("No line number information available")); |
c906108c SS |
1486 | if (sal.pc != 0) |
1487 | { | |
1488 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1489 | user about a source line, at least let them have the symbolic |
1490 | address. */ | |
c906108c SS |
1491 | printf_filtered (" for address "); |
1492 | wrap_here (" "); | |
5af949e3 | 1493 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1494 | } |
1495 | else | |
1496 | printf_filtered ("."); | |
1497 | printf_filtered ("\n"); | |
1498 | } | |
1499 | else if (sal.line > 0 | |
1500 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1501 | { | |
08feed99 | 1502 | struct gdbarch *gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
5af949e3 | 1503 | |
c906108c SS |
1504 | if (start_pc == end_pc) |
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 (" is at address "); | |
5af949e3 | 1511 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1512 | wrap_here (" "); |
1513 | printf_filtered (" but contains no code.\n"); | |
1514 | } | |
1515 | else | |
1516 | { | |
1517 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1518 | sal.line, |
1519 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1520 | wrap_here (" "); |
1521 | printf_filtered (" starts at address "); | |
5af949e3 | 1522 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1523 | wrap_here (" "); |
1524 | printf_filtered (" and ends at "); | |
5af949e3 | 1525 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1526 | printf_filtered (".\n"); |
1527 | } | |
1528 | ||
1529 | /* x/i should display this line's code. */ | |
5af949e3 | 1530 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1531 | |
1532 | /* Repeating "info line" should do the following line. */ | |
1533 | last_line_listed = sal.line + 1; | |
1534 | ||
1535 | /* If this is the only line, show the source code. If it could | |
1536 | not find the file, don't do anything special. */ | |
0d3abd8c AB |
1537 | if (sals.size () == 1) |
1538 | annotate_source_line (sal.symtab, sal.line, 0, start_pc); | |
c906108c SS |
1539 | } |
1540 | else | |
1541 | /* Is there any case in which we get here, and have an address | |
1542 | which the user would want to see? If we have debugging symbols | |
1543 | and no line numbers? */ | |
a3f17187 | 1544 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1545 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1546 | } |
c906108c SS |
1547 | } |
1548 | \f | |
1549 | /* Commands to search the source file for a regexp. */ | |
1550 | ||
73e8dc90 PA |
1551 | /* Helper for forward_search_command/reverse_search_command. FORWARD |
1552 | indicates direction: true for forward, false for | |
1553 | backward/reverse. */ | |
1554 | ||
c906108c | 1555 | static void |
73e8dc90 | 1556 | search_command_helper (const char *regex, int from_tty, bool forward) |
c906108c | 1557 | { |
73e8dc90 | 1558 | const char *msg = re_comp (regex); |
c906108c | 1559 | if (msg) |
8a3fe4f8 | 1560 | error (("%s"), msg); |
c906108c | 1561 | |
1dd58850 TT |
1562 | current_source_location *loc |
1563 | = get_source_location (current_program_space); | |
a75cd9a2 | 1564 | if (loc->symtab () == nullptr) |
c906108c SS |
1565 | select_source_symtab (0); |
1566 | ||
a75cd9a2 | 1567 | scoped_fd desc (open_source_file (loc->symtab ())); |
77ad7394 | 1568 | if (desc.get () < 0) |
a75cd9a2 | 1569 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1570 | |
73e8dc90 PA |
1571 | int line = (forward |
1572 | ? last_line_listed + 1 | |
1573 | : last_line_listed - 1); | |
1574 | ||
cb44333d TT |
1575 | const std::vector<off_t> *offsets; |
1576 | if (line < 1 | |
a75cd9a2 | 1577 | || !g_source_cache.get_line_charpos (loc->symtab (), &offsets) |
cb44333d | 1578 | || line > offsets->size ()) |
9fe4a216 | 1579 | error (_("Expression not found")); |
c906108c | 1580 | |
cb44333d | 1581 | if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0) |
a75cd9a2 | 1582 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1583 | |
2179fbc3 | 1584 | gdb_file_up stream = desc.to_file (FDOPEN_MODE); |
4a45905b | 1585 | clearerr (stream.get ()); |
73e8dc90 PA |
1586 | |
1587 | gdb::def_vector<char> buf; | |
1588 | buf.reserve (256); | |
1589 | ||
c5aa993b JM |
1590 | while (1) |
1591 | { | |
73e8dc90 | 1592 | buf.resize (0); |
c5aa993b | 1593 | |
73e8dc90 | 1594 | int c = fgetc (stream.get ()); |
c5aa993b JM |
1595 | if (c == EOF) |
1596 | break; | |
1597 | do | |
c906108c | 1598 | { |
73e8dc90 | 1599 | buf.push_back (c); |
c906108c | 1600 | } |
4a45905b | 1601 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1602 | |
7be570e7 JM |
1603 | /* Remove the \r, if any, at the end of the line, otherwise |
1604 | regular expressions that end with $ or \n won't work. */ | |
73e8dc90 PA |
1605 | size_t sz = buf.size (); |
1606 | if (sz >= 2 && buf[sz - 2] == '\r') | |
7be570e7 | 1607 | { |
73e8dc90 PA |
1608 | buf[sz - 2] = '\n'; |
1609 | buf.resize (sz - 1); | |
7be570e7 | 1610 | } |
7be570e7 | 1611 | |
c378eb4e | 1612 | /* We now have a source line in buf, null terminate and match. */ |
73e8dc90 PA |
1613 | buf.push_back ('\0'); |
1614 | if (re_exec (buf.data ()) > 0) | |
c5aa993b | 1615 | { |
c378eb4e | 1616 | /* Match! */ |
a75cd9a2 | 1617 | print_source_lines (loc->symtab (), line, line + 1, 0); |
4fa62494 | 1618 | set_internalvar_integer (lookup_internalvar ("_"), line); |
a75cd9a2 | 1619 | loc->set (loc->symtab (), std::max (line - lines_to_list / 2, 1)); |
c5aa993b JM |
1620 | return; |
1621 | } | |
73e8dc90 PA |
1622 | |
1623 | if (forward) | |
1624 | line++; | |
1625 | else | |
1626 | { | |
1627 | line--; | |
b18ca514 PW |
1628 | if (line < 1) |
1629 | break; | |
cb44333d | 1630 | if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0) |
73e8dc90 PA |
1631 | { |
1632 | const char *filename | |
a75cd9a2 | 1633 | = symtab_to_filename_for_display (loc->symtab ()); |
73e8dc90 PA |
1634 | perror_with_name (filename); |
1635 | } | |
1636 | } | |
c5aa993b | 1637 | } |
c906108c | 1638 | |
a3f17187 | 1639 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1640 | } |
1641 | ||
c906108c | 1642 | static void |
73e8dc90 | 1643 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1644 | { |
73e8dc90 PA |
1645 | search_command_helper (regex, from_tty, true); |
1646 | } | |
c906108c | 1647 | |
73e8dc90 PA |
1648 | static void |
1649 | reverse_search_command (const char *regex, int from_tty) | |
1650 | { | |
1651 | search_command_helper (regex, from_tty, false); | |
c906108c | 1652 | } |
2f61ca93 JB |
1653 | |
1654 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1655 | ||
1656 | static void | |
1657 | strip_trailing_directory_separator (char *path) | |
1658 | { | |
1659 | const int last = strlen (path) - 1; | |
1660 | ||
1661 | if (last < 0) | |
1662 | return; /* No stripping is needed if PATH is the empty string. */ | |
1663 | ||
1664 | if (IS_DIR_SEPARATOR (path[last])) | |
1665 | path[last] = '\0'; | |
1666 | } | |
1667 | ||
1668 | /* Return the path substitution rule that matches FROM. | |
1669 | Return NULL if no rule matches. */ | |
1670 | ||
1671 | static struct substitute_path_rule * | |
1672 | find_substitute_path_rule (const char *from) | |
1673 | { | |
1674 | struct substitute_path_rule *rule = substitute_path_rules; | |
1675 | ||
1676 | while (rule != NULL) | |
1677 | { | |
1678 | if (FILENAME_CMP (rule->from, from) == 0) | |
1679 | return rule; | |
1680 | rule = rule->next; | |
1681 | } | |
1682 | ||
1683 | return NULL; | |
1684 | } | |
1685 | ||
1686 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1687 | The new rule will replace FROM into TO. */ | |
1688 | ||
29b0e8a2 | 1689 | void |
2f61ca93 JB |
1690 | add_substitute_path_rule (char *from, char *to) |
1691 | { | |
1692 | struct substitute_path_rule *rule; | |
8d749320 | 1693 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1694 | |
2f61ca93 JB |
1695 | new_rule->from = xstrdup (from); |
1696 | new_rule->to = xstrdup (to); | |
1697 | new_rule->next = NULL; | |
1698 | ||
1699 | /* If the list of rules are empty, then insert the new rule | |
1700 | at the head of the list. */ | |
1701 | ||
1702 | if (substitute_path_rules == NULL) | |
1703 | { | |
1704 | substitute_path_rules = new_rule; | |
1705 | return; | |
1706 | } | |
1707 | ||
1708 | /* Otherwise, skip to the last rule in our list and then append | |
1709 | the new rule. */ | |
1710 | ||
1711 | rule = substitute_path_rules; | |
1712 | while (rule->next != NULL) | |
1713 | rule = rule->next; | |
1714 | ||
1715 | rule->next = new_rule; | |
1716 | } | |
1717 | ||
1718 | /* Remove the given source path substitution rule from the current list | |
1719 | of rules. The memory allocated for that rule is also deallocated. */ | |
1720 | ||
1721 | static void | |
1722 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1723 | { | |
1724 | if (rule == substitute_path_rules) | |
1725 | substitute_path_rules = rule->next; | |
1726 | else | |
1727 | { | |
1728 | struct substitute_path_rule *prev = substitute_path_rules; | |
1729 | ||
1730 | while (prev != NULL && prev->next != rule) | |
1731 | prev = prev->next; | |
1732 | ||
1733 | gdb_assert (prev != NULL); | |
1734 | ||
1735 | prev->next = rule->next; | |
1736 | } | |
1737 | ||
1738 | xfree (rule->from); | |
1739 | xfree (rule->to); | |
1740 | xfree (rule); | |
1741 | } | |
1742 | ||
1743 | /* Implement the "show substitute-path" command. */ | |
1744 | ||
1745 | static void | |
a0d65762 | 1746 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1747 | { |
1748 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1749 | char *from = NULL; |
1750 | ||
773a1edc | 1751 | gdb_argv argv (args); |
2f61ca93 JB |
1752 | |
1753 | /* We expect zero or one argument. */ | |
1754 | ||
1755 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1756 | error (_("Too many arguments in command")); | |
1757 | ||
1758 | if (argv != NULL && argv[0] != NULL) | |
1759 | from = argv[0]; | |
1760 | ||
1761 | /* Print the substitution rules. */ | |
1762 | ||
1763 | if (from != NULL) | |
1764 | printf_filtered | |
1765 | (_("Source path substitution rule matching `%s':\n"), from); | |
1766 | else | |
1767 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1768 | ||
1769 | while (rule != NULL) | |
1770 | { | |
1e2ccb61 | 1771 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1772 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1773 | rule = rule->next; | |
1774 | } | |
1775 | } | |
1776 | ||
1777 | /* Implement the "unset substitute-path" command. */ | |
1778 | ||
1779 | static void | |
a0d65762 | 1780 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1781 | { |
1782 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1783 | gdb_argv argv (args); |
2f61ca93 JB |
1784 | char *from = NULL; |
1785 | int rule_found = 0; | |
1786 | ||
1787 | /* This function takes either 0 or 1 argument. */ | |
1788 | ||
1789 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1790 | error (_("Incorrect usage, too many arguments in command")); | |
1791 | ||
1792 | if (argv != NULL && argv[0] != NULL) | |
1793 | from = argv[0]; | |
1794 | ||
1795 | /* If the user asked for all the rules to be deleted, ask him | |
1796 | to confirm and give him a chance to abort before the action | |
1797 | is performed. */ | |
1798 | ||
1799 | if (from == NULL | |
1800 | && !query (_("Delete all source path substitution rules? "))) | |
1801 | error (_("Canceled")); | |
1802 | ||
1803 | /* Delete the rule matching the argument. No argument means that | |
1804 | all rules should be deleted. */ | |
1805 | ||
1806 | while (rule != NULL) | |
1807 | { | |
1808 | struct substitute_path_rule *next = rule->next; | |
1809 | ||
1810 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1811 | { | |
1812 | delete_substitute_path_rule (rule); | |
1813 | rule_found = 1; | |
1814 | } | |
1815 | ||
1816 | rule = next; | |
1817 | } | |
1818 | ||
1819 | /* If the user asked for a specific rule to be deleted but | |
1820 | we could not find it, then report an error. */ | |
1821 | ||
1822 | if (from != NULL && !rule_found) | |
1823 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1824 | |
1825 | forget_cached_source_info (); | |
2f61ca93 JB |
1826 | } |
1827 | ||
1828 | /* Add a new source path substitution rule. */ | |
1829 | ||
1830 | static void | |
a0d65762 | 1831 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1832 | { |
2f61ca93 JB |
1833 | struct substitute_path_rule *rule; |
1834 | ||
773a1edc | 1835 | gdb_argv argv (args); |
2f61ca93 JB |
1836 | |
1837 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1838 | error (_("Incorrect usage, too few arguments in command")); | |
1839 | ||
1840 | if (argv[2] != NULL) | |
1841 | error (_("Incorrect usage, too many arguments in command")); | |
1842 | ||
1843 | if (*(argv[0]) == '\0') | |
1844 | error (_("First argument must be at least one character long")); | |
1845 | ||
1846 | /* Strip any trailing directory separator character in either FROM | |
1847 | or TO. The substitution rule already implicitly contains them. */ | |
1848 | strip_trailing_directory_separator (argv[0]); | |
1849 | strip_trailing_directory_separator (argv[1]); | |
1850 | ||
1851 | /* If a rule with the same "from" was previously defined, then | |
1852 | delete it. This new rule replaces it. */ | |
1853 | ||
1854 | rule = find_substitute_path_rule (argv[0]); | |
1855 | if (rule != NULL) | |
1856 | delete_substitute_path_rule (rule); | |
1857 | ||
1858 | /* Insert the new substitution rule. */ | |
1859 | ||
1860 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1861 | forget_cached_source_info (); |
2f61ca93 JB |
1862 | } |
1863 | ||
0e2a2133 AB |
1864 | /* See source.h. */ |
1865 | ||
1866 | source_lines_range::source_lines_range (int startline, | |
1867 | source_lines_range::direction dir) | |
1868 | { | |
1869 | if (dir == source_lines_range::FORWARD) | |
1870 | { | |
1871 | LONGEST end = static_cast <LONGEST> (startline) + get_lines_to_list (); | |
1872 | ||
1873 | if (end > INT_MAX) | |
1874 | end = INT_MAX; | |
1875 | ||
1876 | m_startline = startline; | |
1877 | m_stopline = static_cast <int> (end); | |
1878 | } | |
1879 | else | |
1880 | { | |
1881 | LONGEST start = static_cast <LONGEST> (startline) - get_lines_to_list (); | |
1882 | ||
1883 | if (start < 1) | |
1884 | start = 1; | |
1885 | ||
1886 | m_startline = static_cast <int> (start); | |
1887 | m_stopline = startline; | |
1888 | } | |
1889 | } | |
1890 | ||
c906108c | 1891 | \f |
6c265988 | 1892 | void _initialize_source (); |
c906108c | 1893 | void |
6c265988 | 1894 | _initialize_source () |
c906108c SS |
1895 | { |
1896 | struct cmd_list_element *c; | |
433759f7 | 1897 | |
c906108c SS |
1898 | init_source_path (); |
1899 | ||
1900 | /* The intention is to use POSIX Basic Regular Expressions. | |
1901 | Always use the GNU regex routine for consistency across all hosts. | |
1902 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1903 | just an approximation. */ | |
1904 | re_set_syntax (RE_SYNTAX_GREP); | |
1905 | ||
1a966eab AC |
1906 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1907 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1908 | Forget cached info on source file locations and line positions.\n\ |
1909 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1910 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1911 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1912 | &cmdlist); |
1913 | ||
1914 | if (dbx_commands) | |
c5aa993b | 1915 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1916 | |
5ba2abeb | 1917 | set_cmd_completer (c, filename_completer); |
c906108c | 1918 | |
99e7ae30 DE |
1919 | add_setshow_optional_filename_cmd ("directories", |
1920 | class_files, | |
1921 | &source_path, | |
1922 | _("\ | |
1923 | Set the search path for finding source files."), | |
1924 | _("\ | |
1925 | Show the search path for finding source files."), | |
1926 | _("\ | |
c906108c | 1927 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1928 | $cdir in the path means the compilation directory of the source file.\n\ |
1929 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1930 | appending these directories if necessary.\n\ | |
1931 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1932 | set_directories_command, | |
1933 | show_directories_command, | |
1934 | &setlist, &showlist); | |
c906108c | 1935 | |
11db9430 | 1936 | add_info ("source", info_source_command, |
1bedd215 | 1937 | _("Information about the current source file.")); |
c906108c | 1938 | |
11db9430 | 1939 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1940 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1941 | Line can be specified as\n\ |
1942 | LINENUM, to list around that line in current file,\n\ | |
1943 | FILE:LINENUM, to list around that line in that file,\n\ | |
1944 | FUNCTION, to list around beginning of that function,\n\ | |
1945 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1946 | Default is to describe the last source line that was listed.\n\n\ |
1947 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1948 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1949 | The address is also stored as the value of \"$_\".")); |
c906108c | 1950 | |
1bedd215 AC |
1951 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1952 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1953 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1954 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1955 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1956 | |
1bedd215 AC |
1957 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1958 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1959 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1960 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1961 | |
7f7cc265 | 1962 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1963 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1964 | Show number of source lines gdb will list by default."), _("\ |
1965 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1966 | the \"list\" argument explicitly specifies some other number).\n\ | |
1967 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1968 | NULL, |
1969 | show_lines_to_list, | |
1970 | &setlist, &showlist); | |
2f61ca93 JB |
1971 | |
1972 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1973 | _("\ | |
590042fc | 1974 | Add a substitution rule to rewrite the source directories.\n\ |
7ef2b397 | 1975 | Usage: set substitute-path FROM TO\n\ |
590042fc PW |
1976 | The rule is applied only if the directory name starts with FROM\n\ |
1977 | directly followed by a directory separator.\n\ | |
7ef2b397 JB |
1978 | If a substitution rule was previously set for FROM, the old rule\n\ |
1979 | is replaced by the new one."), | |
1980 | &setlist); | |
2f61ca93 JB |
1981 | |
1982 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
1983 | _("\ | |
590042fc | 1984 | Delete one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1985 | Usage: unset substitute-path [FROM]\n\ |
590042fc | 1986 | Delete the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 JB |
1987 | is not specified, all substituting rules are deleted.\n\ |
1988 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
1989 | &unsetlist); |
1990 | ||
1991 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 | 1992 | _("\ |
590042fc | 1993 | Show one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1994 | Usage: show substitute-path [FROM]\n\ |
590042fc | 1995 | Print the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 | 1996 | is not specified, print all substitution rules."), |
2f61ca93 | 1997 | &showlist); |
1b56eb55 JK |
1998 | |
1999 | add_setshow_enum_cmd ("filename-display", class_files, | |
2000 | filename_display_kind_names, | |
2001 | &filename_display_string, _("\ | |
2002 | Set how to display filenames."), _("\ | |
2003 | Show how to display filenames."), _("\ | |
2004 | filename-display can be:\n\ | |
2005 | basename - display only basename of a filename\n\ | |
2006 | relative - display a filename relative to the compilation directory\n\ | |
2007 | absolute - display an absolute filename\n\ | |
2008 | By default, relative filenames are displayed."), | |
2009 | NULL, | |
2010 | show_filename_display_string, | |
2011 | &setlist, &showlist); | |
2012 | ||
c906108c | 2013 | } |