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" |
c906108c | 51 | |
c906108c SS |
52 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
53 | #define FDOPEN_MODE FOPEN_RB | |
54 | ||
c906108c SS |
55 | /* Path of directories to search for source files. |
56 | Same format as the PATH environment variable's value. */ | |
57 | ||
58 | char *source_path; | |
59 | ||
2f61ca93 JB |
60 | /* Support for source path substitution commands. */ |
61 | ||
62 | struct substitute_path_rule | |
63 | { | |
64 | char *from; | |
65 | char *to; | |
66 | struct substitute_path_rule *next; | |
67 | }; | |
68 | ||
69 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
70 | ||
1dd58850 | 71 | /* An instance of this is attached to each program space. */ |
c906108c | 72 | |
1dd58850 TT |
73 | struct current_source_location |
74 | { | |
a75cd9a2 TT |
75 | public: |
76 | ||
77 | current_source_location () = default; | |
78 | ||
79 | /* Set the value. */ | |
80 | void set (struct symtab *s, int l) | |
81 | { | |
82 | m_symtab = s; | |
83 | m_line = l; | |
84 | gdb::observers::current_source_symtab_and_line_changed.notify (); | |
85 | } | |
86 | ||
87 | /* Get the symtab. */ | |
88 | struct symtab *symtab () const | |
89 | { | |
90 | return m_symtab; | |
91 | } | |
92 | ||
93 | /* Get the line number. */ | |
94 | int line () const | |
95 | { | |
96 | return m_line; | |
97 | } | |
98 | ||
99 | private: | |
100 | ||
1dd58850 TT |
101 | /* Symtab of default file for listing lines of. */ |
102 | ||
a75cd9a2 | 103 | struct symtab *m_symtab = nullptr; |
c906108c | 104 | |
1dd58850 | 105 | /* Default next line to list. */ |
c906108c | 106 | |
a75cd9a2 | 107 | int m_line = 0; |
1dd58850 | 108 | }; |
c906108c | 109 | |
1dd58850 | 110 | static program_space_key<current_source_location> current_source_key; |
6c95b8df | 111 | |
c906108c SS |
112 | /* Default number of lines to print with commands like "list". |
113 | This is based on guessing how many long (i.e. more than chars_per_line | |
114 | characters) lines there will be. To be completely correct, "list" | |
115 | and friends should be rewritten to count characters and see where | |
116 | things are wrapping, but that would be a fair amount of work. */ | |
117 | ||
f43f8571 | 118 | static int lines_to_list = 10; |
920d2a44 AC |
119 | static void |
120 | show_lines_to_list (struct ui_file *file, int from_tty, | |
121 | struct cmd_list_element *c, const char *value) | |
122 | { | |
3e43a32a MS |
123 | fprintf_filtered (file, |
124 | _("Number of source lines gdb " | |
125 | "will list by default is %s.\n"), | |
920d2a44 AC |
126 | value); |
127 | } | |
c906108c | 128 | |
1b56eb55 JK |
129 | /* Possible values of 'set filename-display'. */ |
130 | static const char filename_display_basename[] = "basename"; | |
131 | static const char filename_display_relative[] = "relative"; | |
132 | static const char filename_display_absolute[] = "absolute"; | |
133 | ||
134 | static const char *const filename_display_kind_names[] = { | |
135 | filename_display_basename, | |
136 | filename_display_relative, | |
137 | filename_display_absolute, | |
138 | NULL | |
139 | }; | |
140 | ||
141 | static const char *filename_display_string = filename_display_relative; | |
142 | ||
143 | static void | |
144 | show_filename_display_string (struct ui_file *file, int from_tty, | |
145 | struct cmd_list_element *c, const char *value) | |
146 | { | |
147 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
148 | } | |
149 | ||
c906108c SS |
150 | /* Line number of last line printed. Default for various commands. |
151 | current_source_line is usually, but not always, the same as this. */ | |
152 | ||
153 | static int last_line_listed; | |
154 | ||
5166082f PA |
155 | /* First line number listed by last listing command. If 0, then no |
156 | source lines have yet been listed since the last time the current | |
157 | source line was changed. */ | |
c906108c SS |
158 | |
159 | static int first_line_listed; | |
160 | ||
161 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 162 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
163 | |
164 | static struct symtab *last_source_visited = NULL; | |
b08b16c8 | 165 | static bool last_source_error = false; |
c906108c | 166 | \f |
0378c332 FN |
167 | /* Return the first line listed by print_source_lines. |
168 | Used by command interpreters to request listing from | |
c378eb4e | 169 | a previous point. */ |
0378c332 FN |
170 | |
171 | int | |
172 | get_first_line_listed (void) | |
173 | { | |
174 | return first_line_listed; | |
175 | } | |
176 | ||
5166082f PA |
177 | /* Clear line listed range. This makes the next "list" center the |
178 | printed source lines around the current source line. */ | |
179 | ||
180 | static void | |
181 | clear_lines_listed_range (void) | |
182 | { | |
183 | first_line_listed = 0; | |
184 | last_line_listed = 0; | |
185 | } | |
186 | ||
0378c332 FN |
187 | /* Return the default number of lines to print with commands like the |
188 | cli "list". The caller of print_source_lines must use this to | |
189 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 190 | as it does not automatically use this value. */ |
0378c332 FN |
191 | |
192 | int | |
193 | get_lines_to_list (void) | |
194 | { | |
195 | return lines_to_list; | |
196 | } | |
197 | ||
1dd58850 TT |
198 | /* A helper to return the current source location object for PSPACE, |
199 | creating it if it does not exist. */ | |
200 | ||
201 | static current_source_location * | |
202 | get_source_location (program_space *pspace) | |
203 | { | |
204 | current_source_location *loc | |
205 | = current_source_key.get (pspace); | |
206 | if (loc == nullptr) | |
207 | loc = current_source_key.emplace (pspace); | |
208 | return loc; | |
209 | } | |
210 | ||
0378c332 | 211 | /* Return the current source file for listing and next line to list. |
c378eb4e | 212 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
213 | |
214 | struct symtab_and_line | |
215 | get_current_source_symtab_and_line (void) | |
216 | { | |
51abb421 | 217 | symtab_and_line cursal; |
1dd58850 | 218 | current_source_location *loc = get_source_location (current_program_space); |
0378c332 | 219 | |
1dd58850 | 220 | cursal.pspace = current_program_space; |
a75cd9a2 TT |
221 | cursal.symtab = loc->symtab (); |
222 | cursal.line = loc->line (); | |
53cb0458 FN |
223 | cursal.pc = 0; |
224 | cursal.end = 0; | |
0378c332 FN |
225 | |
226 | return cursal; | |
227 | } | |
228 | ||
53cb0458 FN |
229 | /* If the current source file for listing is not set, try and get a default. |
230 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 231 | It may err out if a default cannot be determined. |
53cb0458 FN |
232 | We must be cautious about where it is called, as it can recurse as the |
233 | process of determining a new default may call the caller! | |
234 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 235 | we have without erroring out or trying to get a default. */ |
0378c332 | 236 | |
53cb0458 FN |
237 | void |
238 | set_default_source_symtab_and_line (void) | |
0378c332 | 239 | { |
0378c332 | 240 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 241 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 242 | |
c378eb4e | 243 | /* Pull in a current source symtab if necessary. */ |
1dd58850 | 244 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 245 | if (loc->symtab () == nullptr) |
0378c332 | 246 | select_source_symtab (0); |
0378c332 FN |
247 | } |
248 | ||
249 | /* Return the current default file for listing and next line to list | |
250 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 251 | and set the current default to whatever is in SAL. |
c378eb4e | 252 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
253 | |
254 | struct symtab_and_line | |
51abb421 | 255 | set_current_source_symtab_and_line (const symtab_and_line &sal) |
0378c332 | 256 | { |
51abb421 | 257 | symtab_and_line cursal; |
6c95b8df | 258 | |
1dd58850 TT |
259 | current_source_location *loc = get_source_location (sal.pspace); |
260 | ||
261 | cursal.pspace = sal.pspace; | |
a75cd9a2 TT |
262 | cursal.symtab = loc->symtab (); |
263 | cursal.line = loc->line (); | |
6c95b8df PA |
264 | cursal.pc = 0; |
265 | cursal.end = 0; | |
0378c332 | 266 | |
a75cd9a2 | 267 | loc->set (sal.symtab, sal.line); |
6c95b8df | 268 | |
5166082f PA |
269 | /* Force the next "list" to center around the current line. */ |
270 | clear_lines_listed_range (); | |
271 | ||
0378c332 FN |
272 | return cursal; |
273 | } | |
274 | ||
c378eb4e | 275 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
276 | |
277 | void | |
278 | clear_current_source_symtab_and_line (void) | |
279 | { | |
1dd58850 | 280 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 281 | loc->set (nullptr, 0); |
0378c332 | 282 | } |
c5aa993b | 283 | |
583068ca | 284 | /* See source.h. */ |
c906108c SS |
285 | |
286 | void | |
aa1ee363 | 287 | select_source_symtab (struct symtab *s) |
c906108c | 288 | { |
c906108c SS |
289 | if (s) |
290 | { | |
1dd58850 TT |
291 | current_source_location *loc |
292 | = get_source_location (SYMTAB_PSPACE (s)); | |
a75cd9a2 | 293 | loc->set (s, 1); |
c906108c SS |
294 | return; |
295 | } | |
296 | ||
1dd58850 | 297 | current_source_location *loc = get_source_location (current_program_space); |
a75cd9a2 | 298 | if (loc->symtab () != nullptr) |
c906108c SS |
299 | return; |
300 | ||
301 | /* Make the default place to list be the function `main' | |
302 | if one exists. */ | |
5c281dbb TT |
303 | block_symbol bsym = lookup_symbol (main_name (), 0, VAR_DOMAIN, 0); |
304 | if (bsym.symbol != nullptr && SYMBOL_CLASS (bsym.symbol) == LOC_BLOCK) | |
c906108c | 305 | { |
5c281dbb | 306 | symtab_and_line sal = find_function_start_sal (bsym.symbol, true); |
a75cd9a2 | 307 | loc->set (sal.symtab, std::max (sal.line - (lines_to_list - 1), 1)); |
5c281dbb | 308 | return; |
c906108c | 309 | } |
c5aa993b | 310 | |
8340a3fb LM |
311 | /* Alright; find the last file in the symtab list (ignoring .h's |
312 | and namespace symtabs). */ | |
c906108c | 313 | |
a75cd9a2 | 314 | struct symtab *new_symtab = nullptr; |
c906108c | 315 | |
2030c079 | 316 | for (objfile *ofp : current_program_space->objfiles ()) |
c906108c | 317 | { |
b669c953 | 318 | for (compunit_symtab *cu : ofp->compunits ()) |
c906108c | 319 | { |
8b31193a TT |
320 | for (symtab *symtab : compunit_filetabs (cu)) |
321 | { | |
322 | const char *name = symtab->filename; | |
323 | int len = strlen (name); | |
324 | ||
325 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 | |
326 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
a75cd9a2 | 327 | new_symtab = symtab; |
8b31193a | 328 | } |
c906108c SS |
329 | } |
330 | } | |
6c95b8df | 331 | |
a75cd9a2 TT |
332 | loc->set (new_symtab, 1); |
333 | if (new_symtab != nullptr) | |
c906108c SS |
334 | return; |
335 | ||
2030c079 | 336 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
337 | { |
338 | if (objfile->sf) | |
339 | s = objfile->sf->qf->find_last_source_symtab (objfile); | |
340 | if (s) | |
a75cd9a2 TT |
341 | new_symtab = s; |
342 | } | |
343 | if (new_symtab != nullptr) | |
344 | { | |
345 | loc->set (new_symtab,1); | |
346 | return; | |
aed57c53 | 347 | } |
c906108c | 348 | |
8a3fe4f8 | 349 | error (_("Can't find a default source file")); |
c906108c SS |
350 | } |
351 | \f | |
99e7ae30 DE |
352 | /* Handler for "set directories path-list" command. |
353 | "set dir mumble" doesn't prepend paths, it resets the entire | |
354 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
355 | ||
356 | static void | |
eb4c3f4a TT |
357 | set_directories_command (const char *args, |
358 | int from_tty, struct cmd_list_element *c) | |
99e7ae30 DE |
359 | { |
360 | /* This is the value that was set. | |
361 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
362 | char *set_path = source_path; | |
363 | ||
364 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
365 | the list by calling init_source_path. If they appear earlier in | |
366 | SET_PATH then mod_path will move them appropriately. | |
367 | mod_path will also remove duplicates. */ | |
368 | init_source_path (); | |
369 | if (*set_path != '\0') | |
370 | mod_path (set_path, &source_path); | |
371 | ||
372 | xfree (set_path); | |
373 | } | |
374 | ||
375 | /* Print the list of source directories. | |
376 | This is used by the "ld" command, so it has the signature of a command | |
377 | function. */ | |
378 | ||
c906108c | 379 | static void |
99e7ae30 | 380 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
381 | { |
382 | puts_filtered ("Source directories searched: "); | |
383 | puts_filtered (source_path); | |
384 | puts_filtered ("\n"); | |
385 | } | |
386 | ||
99e7ae30 DE |
387 | /* Handler for "show directories" command. */ |
388 | ||
389 | static void | |
390 | show_directories_command (struct ui_file *file, int from_tty, | |
391 | struct cmd_list_element *c, const char *value) | |
392 | { | |
393 | show_directories_1 (NULL, from_tty); | |
394 | } | |
395 | ||
583068ca | 396 | /* See source.h. */ |
00174a86 TT |
397 | |
398 | void | |
399 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
400 | { | |
b669c953 | 401 | for (compunit_symtab *cu : objfile->compunits ()) |
00174a86 | 402 | { |
d5da8b3c | 403 | for (symtab *s : compunit_filetabs (cu)) |
00174a86 | 404 | { |
d5da8b3c TT |
405 | if (s->fullname != NULL) |
406 | { | |
407 | xfree (s->fullname); | |
408 | s->fullname = NULL; | |
409 | } | |
00174a86 | 410 | } |
00174a86 | 411 | } |
6f809020 DE |
412 | |
413 | if (objfile->sf) | |
414 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
415 | } |
416 | ||
583068ca | 417 | /* See source.h. */ |
c906108c SS |
418 | |
419 | void | |
fba45db2 | 420 | forget_cached_source_info (void) |
c906108c | 421 | { |
6c95b8df | 422 | struct program_space *pspace; |
c906108c | 423 | |
6c95b8df | 424 | ALL_PSPACES (pspace) |
2030c079 | 425 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
426 | { |
427 | forget_cached_source_info_for_objfile (objfile); | |
428 | } | |
c4e86dd4 | 429 | |
62f29fda | 430 | g_source_cache.clear (); |
c4e86dd4 | 431 | last_source_visited = NULL; |
c906108c SS |
432 | } |
433 | ||
434 | void | |
fba45db2 | 435 | init_source_path (void) |
c906108c SS |
436 | { |
437 | char buf[20]; | |
438 | ||
08850b56 | 439 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 440 | source_path = xstrdup (buf); |
c906108c SS |
441 | forget_cached_source_info (); |
442 | } | |
443 | ||
444 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 445 | |
28da1647 | 446 | static void |
5fed81ff | 447 | directory_command (const char *dirname, int from_tty) |
c906108c SS |
448 | { |
449 | dont_repeat (); | |
c378eb4e | 450 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
451 | if (dirname == 0) |
452 | { | |
80618b99 | 453 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 454 | { |
b8c9b27d | 455 | xfree (source_path); |
c906108c SS |
456 | init_source_path (); |
457 | } | |
458 | } | |
459 | else | |
460 | { | |
461 | mod_path (dirname, &source_path); | |
c4e86dd4 | 462 | forget_cached_source_info (); |
c906108c SS |
463 | } |
464 | if (from_tty) | |
99e7ae30 | 465 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
466 | } |
467 | ||
13d35ae5 AS |
468 | /* Add a path given with the -d command line switch. |
469 | This will not be quoted so we must not treat spaces as separators. */ | |
470 | ||
471 | void | |
5614fb77 | 472 | directory_switch (const char *dirname, int from_tty) |
13d35ae5 AS |
473 | { |
474 | add_path (dirname, &source_path, 0); | |
475 | } | |
476 | ||
c906108c SS |
477 | /* Add zero or more directories to the front of an arbitrary path. */ |
478 | ||
479 | void | |
5614fb77 | 480 | mod_path (const char *dirname, char **which_path) |
c04e0a08 JJ |
481 | { |
482 | add_path (dirname, which_path, 1); | |
483 | } | |
484 | ||
485 | /* Workhorse of mod_path. Takes an extra argument to determine | |
486 | if dirname should be parsed for separators that indicate multiple | |
487 | directories. This allows for interfaces that pre-parse the dirname | |
488 | and allow specification of traditional separator characters such | |
c378eb4e | 489 | as space or tab. */ |
c04e0a08 JJ |
490 | |
491 | void | |
5614fb77 | 492 | add_path (const char *dirname, char **which_path, int parse_separators) |
c906108c SS |
493 | { |
494 | char *old = *which_path; | |
495 | int prefix = 0; | |
e80aaf61 | 496 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c SS |
497 | |
498 | if (dirname == 0) | |
499 | return; | |
500 | ||
13d35ae5 AS |
501 | if (parse_separators) |
502 | { | |
503 | /* This will properly parse the space and tab separators | |
e4ab2fad | 504 | and any quotes that may exist. */ |
773a1edc | 505 | gdb_argv argv (dirname); |
e4ab2fad | 506 | |
773a1edc TT |
507 | for (char *arg : argv) |
508 | dirnames_to_char_ptr_vec_append (&dir_vec, arg); | |
13d35ae5 AS |
509 | } |
510 | else | |
e80aaf61 | 511 | dir_vec.emplace_back (xstrdup (dirname)); |
c906108c | 512 | |
e80aaf61 | 513 | for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec) |
c906108c | 514 | { |
e80aaf61 | 515 | char *name = name_up.get (); |
aa1ee363 | 516 | char *p; |
c906108c | 517 | struct stat st; |
db68fbe2 | 518 | gdb::unique_xmalloc_ptr<char> new_name_holder; |
c906108c | 519 | |
e4ab2fad JK |
520 | /* Spaces and tabs will have been removed by buildargv(). |
521 | NAME is the start of the directory. | |
522 | P is the '\0' following the end. */ | |
523 | p = name + strlen (name); | |
13d35ae5 AS |
524 | |
525 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 526 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 527 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 528 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 529 | #endif |
13d35ae5 | 530 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 531 | /* Sigh. "foo/" => "foo" */ |
c906108c | 532 | --p; |
c906108c SS |
533 | *p = '\0'; |
534 | ||
7be570e7 | 535 | while (p > name && p[-1] == '.') |
c906108c SS |
536 | { |
537 | if (p - name == 1) | |
538 | { | |
539 | /* "." => getwd (). */ | |
540 | name = current_directory; | |
541 | goto append; | |
542 | } | |
fe4e3eb8 | 543 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
544 | { |
545 | if (p - name == 2) | |
546 | { | |
547 | /* "/." => "/". */ | |
548 | *--p = '\0'; | |
549 | goto append; | |
550 | } | |
551 | else | |
552 | { | |
553 | /* "...foo/." => "...foo". */ | |
554 | p -= 2; | |
555 | *p = '\0'; | |
556 | continue; | |
557 | } | |
558 | } | |
559 | else | |
560 | break; | |
561 | } | |
562 | ||
563 | if (name[0] == '~') | |
db68fbe2 | 564 | new_name_holder.reset (tilde_expand (name)); |
c3690141 | 565 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 566 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
db68fbe2 | 567 | new_name_holder.reset (concat (name, ".", (char *) NULL)); |
7be570e7 | 568 | #endif |
fe4e3eb8 | 569 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
ff8577f6 | 570 | new_name_holder = gdb_abspath (name); |
c906108c | 571 | else |
db68fbe2 TT |
572 | new_name_holder.reset (savestring (name, p - name)); |
573 | name = new_name_holder.get (); | |
c906108c SS |
574 | |
575 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
576 | if (name[0] != '$') |
577 | { | |
578 | /* These are warnings, not errors, since we don't want a | |
579 | non-existent directory in a .gdbinit file to stop processing | |
580 | of the .gdbinit file. | |
581 | ||
582 | Whether they get added to the path is more debatable. Current | |
583 | answer is yes, in case the user wants to go make the directory | |
584 | or whatever. If the directory continues to not exist/not be | |
585 | a directory/etc, then having them in the path should be | |
586 | harmless. */ | |
587 | if (stat (name, &st) < 0) | |
588 | { | |
589 | int save_errno = errno; | |
433759f7 | 590 | |
c5aa993b JM |
591 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
592 | print_sys_errmsg (name, save_errno); | |
593 | } | |
594 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 595 | warning (_("%s is not a directory."), name); |
c5aa993b | 596 | } |
c906108c SS |
597 | |
598 | append: | |
599 | { | |
aa1ee363 | 600 | unsigned int len = strlen (name); |
5ee4ed9f | 601 | char tinybuf[2]; |
c906108c SS |
602 | |
603 | p = *which_path; | |
5e3f4fab | 604 | while (1) |
c906108c | 605 | { |
5e3f4fab EBM |
606 | /* FIXME: we should use realpath() or its work-alike |
607 | before comparing. Then all the code above which | |
608 | removes excess slashes and dots could simply go away. */ | |
609 | if (!filename_ncmp (p, name, len) | |
610 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
611 | { | |
612 | /* Found it in the search path, remove old copy. */ | |
613 | if (p > *which_path) | |
614 | { | |
615 | /* Back over leading separator. */ | |
616 | p--; | |
617 | } | |
618 | if (prefix > p - *which_path) | |
619 | { | |
620 | /* Same dir twice in one cmd. */ | |
621 | goto skip_dup; | |
622 | } | |
623 | /* Copy from next '\0' or ':'. */ | |
624 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); | |
625 | } | |
626 | p = strchr (p, DIRNAME_SEPARATOR); | |
627 | if (p != 0) | |
628 | ++p; | |
629 | else | |
630 | break; | |
c906108c | 631 | } |
c906108c | 632 | |
5ee4ed9f JK |
633 | tinybuf[0] = DIRNAME_SEPARATOR; |
634 | tinybuf[1] = '\0'; | |
c906108c | 635 | |
5ee4ed9f JK |
636 | /* If we have already tacked on a name(s) in this command, |
637 | be sure they stay on the front as we tack on some | |
638 | more. */ | |
639 | if (prefix) | |
640 | { | |
641 | char *temp, c; | |
642 | ||
643 | c = old[prefix]; | |
644 | old[prefix] = '\0'; | |
645 | temp = concat (old, tinybuf, name, (char *)NULL); | |
646 | old[prefix] = c; | |
647 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
648 | prefix = strlen (temp); | |
649 | xfree (temp); | |
650 | } | |
651 | else | |
652 | { | |
653 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
654 | old, (char *)NULL); | |
655 | prefix = strlen (name); | |
c906108c | 656 | } |
5ee4ed9f JK |
657 | xfree (old); |
658 | old = *which_path; | |
c906108c | 659 | } |
82ae4854 | 660 | skip_dup: |
b27cf2b3 | 661 | ; |
c5aa993b | 662 | } |
c906108c SS |
663 | } |
664 | ||
665 | ||
666 | static void | |
1d12d88f | 667 | info_source_command (const char *ignore, int from_tty) |
c906108c | 668 | { |
1dd58850 TT |
669 | current_source_location *loc |
670 | = get_source_location (current_program_space); | |
a75cd9a2 | 671 | struct symtab *s = loc->symtab (); |
b6577aab | 672 | struct compunit_symtab *cust; |
c906108c SS |
673 | |
674 | if (!s) | |
675 | { | |
a3f17187 | 676 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
677 | return; |
678 | } | |
b6577aab DE |
679 | |
680 | cust = SYMTAB_COMPUNIT (s); | |
a3f17187 | 681 | printf_filtered (_("Current source file is %s\n"), s->filename); |
ee6f8984 DE |
682 | if (SYMTAB_DIRNAME (s) != NULL) |
683 | printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s)); | |
c906108c | 684 | if (s->fullname) |
a3f17187 | 685 | printf_filtered (_("Located in %s\n"), s->fullname); |
cb44333d TT |
686 | const std::vector<off_t> *offsets; |
687 | if (g_source_cache.get_line_charpos (s, &offsets)) | |
688 | printf_filtered (_("Contains %d line%s.\n"), (int) offsets->size (), | |
689 | offsets->size () == 1 ? "" : "s"); | |
c906108c | 690 | |
a3f17187 | 691 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
b6577aab DE |
692 | printf_filtered (_("Producer is %s.\n"), |
693 | COMPUNIT_PRODUCER (cust) != NULL | |
694 | ? COMPUNIT_PRODUCER (cust) : _("unknown")); | |
43f3e411 | 695 | printf_filtered (_("Compiled with %s debugging format.\n"), |
b6577aab | 696 | COMPUNIT_DEBUGFORMAT (cust)); |
a3f17187 | 697 | printf_filtered (_("%s preprocessor macro info.\n"), |
b6577aab | 698 | COMPUNIT_MACRO_TABLE (cust) != NULL |
43f3e411 | 699 | ? "Includes" : "Does not include"); |
c906108c | 700 | } |
c5aa993b | 701 | \f |
c906108c | 702 | |
f1b620e9 MG |
703 | /* Helper function to remove characters from the start of PATH so that |
704 | PATH can then be appended to a directory name. We remove leading drive | |
705 | letters (for dos) as well as leading '/' characters and './' | |
706 | sequences. */ | |
707 | ||
cb8c24b6 | 708 | static const char * |
f1b620e9 MG |
709 | prepare_path_for_appending (const char *path) |
710 | { | |
711 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ | |
712 | if (HAS_DRIVE_SPEC (path)) | |
713 | path = STRIP_DRIVE_SPEC (path); | |
714 | ||
715 | const char *old_path; | |
716 | do | |
717 | { | |
718 | old_path = path; | |
719 | ||
720 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ | |
721 | while (IS_DIR_SEPARATOR(path[0])) | |
722 | path++; | |
723 | ||
724 | /* ./foo => foo */ | |
725 | while (path[0] == '.' && IS_DIR_SEPARATOR (path[1])) | |
726 | path += 2; | |
727 | } | |
728 | while (old_path != path); | |
729 | ||
730 | return path; | |
731 | } | |
732 | ||
c906108c | 733 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
734 | using mode MODE in the calls to open. You cannot use this function to |
735 | create files (O_CREAT). | |
c906108c | 736 | |
014d698b EZ |
737 | OPTS specifies the function behaviour in specific cases. |
738 | ||
739 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 740 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
741 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
742 | disables searching of the path (this is so that "exec-file ./foo" or | |
743 | "symbol-file ./foo" insures that you get that particular version of | |
744 | foo or an error message). | |
c906108c | 745 | |
014d698b EZ |
746 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
747 | searched in path (we usually want this for source files but not for | |
748 | executables). | |
749 | ||
e7a8479f | 750 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 751 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
752 | have to take special pains to avoid doubling the "/" between the directory |
753 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
754 | source file name!!! | |
755 | ||
492c0ab7 JK |
756 | If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by |
757 | gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns | |
758 | filename starting with "/". If FILENAME_OPENED is NULL this option has no | |
759 | effect. | |
1f0c4988 | 760 | |
c906108c SS |
761 | If a file is found, return the descriptor. |
762 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
763 | ||
764 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 765 | >>>> eg executable, non-directory. */ |
c906108c | 766 | int |
24b9144d | 767 | openp (const char *path, openp_flags opts, const char *string, |
e0cc99a6 | 768 | int mode, gdb::unique_xmalloc_ptr<char> *filename_opened) |
c906108c | 769 | { |
52f0bd74 AC |
770 | int fd; |
771 | char *filename; | |
c906108c | 772 | int alloclen; |
79b289e2 PA |
773 | /* The errno set for the last name we tried to open (and |
774 | failed). */ | |
775 | int last_errno = 0; | |
e80aaf61 | 776 | std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec; |
c906108c | 777 | |
fbdebf46 JK |
778 | /* The open syscall MODE parameter is not specified. */ |
779 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
780 | gdb_assert (string != NULL); |
781 | ||
782 | /* A file with an empty name cannot possibly exist. Report a failure | |
783 | without further checking. | |
784 | ||
785 | This is an optimization which also defends us against buggy | |
786 | implementations of the "stat" function. For instance, we have | |
787 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
788 | when the debugger is started with an empty argument. */ | |
789 | if (string[0] == '\0') | |
790 | { | |
791 | errno = ENOENT; | |
792 | return -1; | |
793 | } | |
fbdebf46 | 794 | |
c906108c SS |
795 | if (!path) |
796 | path = "."; | |
797 | ||
c906108c | 798 | mode |= O_BINARY; |
c906108c | 799 | |
014d698b | 800 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c | 801 | { |
a55411b9 | 802 | int i, reg_file_errno; |
072b1022 | 803 | |
a55411b9 | 804 | if (is_regular_file (string, ®_file_errno)) |
072b1022 | 805 | { |
224c3ddb | 806 | filename = (char *) alloca (strlen (string) + 1); |
072b1022 | 807 | strcpy (filename, string); |
614c279d | 808 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
809 | if (fd >= 0) |
810 | goto done; | |
a55411b9 | 811 | last_errno = errno; |
072b1022 DJ |
812 | } |
813 | else | |
3f565f1e DJ |
814 | { |
815 | filename = NULL; | |
816 | fd = -1; | |
a55411b9 | 817 | last_errno = reg_file_errno; |
3f565f1e | 818 | } |
072b1022 | 819 | |
014d698b EZ |
820 | if (!(opts & OPF_SEARCH_IN_PATH)) |
821 | for (i = 0; string[i]; i++) | |
822 | if (IS_DIR_SEPARATOR (string[i])) | |
823 | goto done; | |
c906108c SS |
824 | } |
825 | ||
f1b620e9 MG |
826 | /* Remove characters from the start of PATH that we don't need when PATH |
827 | is appended to a directory name. */ | |
828 | string = prepare_path_for_appending (string); | |
c906108c SS |
829 | |
830 | alloclen = strlen (path) + strlen (string) + 2; | |
224c3ddb | 831 | filename = (char *) alloca (alloclen); |
c906108c | 832 | fd = -1; |
79b289e2 | 833 | last_errno = ENOENT; |
e4ab2fad JK |
834 | |
835 | dir_vec = dirnames_to_char_ptr_vec (path); | |
e4ab2fad | 836 | |
e80aaf61 | 837 | for (const gdb::unique_xmalloc_ptr<char> &dir_up : dir_vec) |
c906108c | 838 | { |
e80aaf61 | 839 | char *dir = dir_up.get (); |
e4ab2fad | 840 | size_t len = strlen (dir); |
a55411b9 | 841 | int reg_file_errno; |
c906108c | 842 | |
e4ab2fad | 843 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
844 | { |
845 | /* Name is $cwd -- insert current directory name instead. */ | |
846 | int newlen; | |
847 | ||
c378eb4e | 848 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
849 | len = strlen (current_directory); |
850 | newlen = len + strlen (string) + 2; | |
851 | if (newlen > alloclen) | |
852 | { | |
853 | alloclen = newlen; | |
224c3ddb | 854 | filename = (char *) alloca (alloclen); |
c5aa993b JM |
855 | } |
856 | strcpy (filename, current_directory); | |
857 | } | |
ebd86fb5 TJB |
858 | else if (strchr(dir, '~')) |
859 | { | |
860 | /* See whether we need to expand the tilde. */ | |
861 | int newlen; | |
ebd86fb5 | 862 | |
ee0c3293 | 863 | gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir)); |
ebd86fb5 TJB |
864 | |
865 | /* First, realloc the filename buffer if too short. */ | |
ee0c3293 | 866 | len = strlen (tilde_expanded.get ()); |
ebd86fb5 TJB |
867 | newlen = len + strlen (string) + 2; |
868 | if (newlen > alloclen) | |
869 | { | |
870 | alloclen = newlen; | |
224c3ddb | 871 | filename = (char *) alloca (alloclen); |
ebd86fb5 | 872 | } |
ee0c3293 | 873 | strcpy (filename, tilde_expanded.get ()); |
ebd86fb5 | 874 | } |
c5aa993b JM |
875 | else |
876 | { | |
877 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 878 | strcpy (filename, dir); |
08001717 DE |
879 | |
880 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
881 | don't have enough information to expand it. The user *could* | |
882 | have an actual directory named '$cdir' but handling that would | |
883 | be confusing, it would mean different things in different | |
884 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
885 | We can get $cdir when loading scripts. When loading source files | |
886 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 887 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 888 | continue; |
c906108c | 889 | } |
c906108c | 890 | |
c378eb4e | 891 | /* Remove trailing slashes. */ |
fe4e3eb8 | 892 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
893 | filename[--len] = 0; |
894 | ||
c5aa993b | 895 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
896 | strcat (filename, string); |
897 | ||
a55411b9 | 898 | if (is_regular_file (filename, ®_file_errno)) |
5e987968 | 899 | { |
614c279d | 900 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
901 | if (fd >= 0) |
902 | break; | |
79b289e2 | 903 | last_errno = errno; |
5e987968 | 904 | } |
a55411b9 DE |
905 | else |
906 | last_errno = reg_file_errno; | |
c906108c SS |
907 | } |
908 | ||
c5aa993b | 909 | done: |
c906108c SS |
910 | if (filename_opened) |
911 | { | |
f5b95b50 | 912 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 913 | if (fd < 0) |
e0cc99a6 | 914 | filename_opened->reset (NULL); |
04affae3 | 915 | else if ((opts & OPF_RETURN_REALPATH) != 0) |
e0cc99a6 | 916 | *filename_opened = gdb_realpath (filename); |
c906108c | 917 | else |
e0cc99a6 | 918 | *filename_opened = gdb_abspath (filename); |
c906108c | 919 | } |
c906108c | 920 | |
79b289e2 | 921 | errno = last_errno; |
c906108c SS |
922 | return fd; |
923 | } | |
924 | ||
c5aa993b | 925 | |
c906108c SS |
926 | /* This is essentially a convenience, for clients that want the behaviour |
927 | of openp, using source_path, but that really don't want the file to be | |
928 | opened but want instead just to know what the full pathname is (as | |
929 | qualified against source_path). | |
930 | ||
931 | The current working directory is searched first. | |
932 | ||
933 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
934 | set to the fully-qualified pathname. | |
935 | ||
5e987968 | 936 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 937 | int |
e0cc99a6 TT |
938 | source_full_path_of (const char *filename, |
939 | gdb::unique_xmalloc_ptr<char> *full_pathname) | |
c906108c | 940 | { |
c5aa993b | 941 | int fd; |
c906108c | 942 | |
492c0ab7 JK |
943 | fd = openp (source_path, |
944 | OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, | |
945 | filename, O_RDONLY, full_pathname); | |
c906108c SS |
946 | if (fd < 0) |
947 | { | |
e0cc99a6 | 948 | full_pathname->reset (NULL); |
c906108c SS |
949 | return 0; |
950 | } | |
951 | ||
952 | close (fd); | |
953 | return 1; | |
954 | } | |
955 | ||
2f61ca93 JB |
956 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
957 | applied to PATH. */ | |
958 | ||
959 | static int | |
960 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
961 | const char *path) | |
962 | { | |
963 | const int from_len = strlen (rule->from); | |
964 | const int path_len = strlen (path); | |
2f61ca93 JB |
965 | |
966 | if (path_len < from_len) | |
967 | return 0; | |
968 | ||
969 | /* The substitution rules are anchored at the start of the path, | |
486ef3b9 | 970 | so the path should start with rule->from. */ |
2f61ca93 | 971 | |
486ef3b9 | 972 | if (filename_ncmp (path, rule->from, from_len) != 0) |
2f61ca93 JB |
973 | return 0; |
974 | ||
975 | /* Make sure that the region in the path that matches the substitution | |
976 | rule is immediately followed by a directory separator (or the end of | |
977 | string character). */ | |
230cd560 | 978 | |
2f61ca93 JB |
979 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) |
980 | return 0; | |
981 | ||
982 | return 1; | |
983 | } | |
984 | ||
985 | /* Find the substitute-path rule that applies to PATH and return it. | |
986 | Return NULL if no rule applies. */ | |
987 | ||
988 | static struct substitute_path_rule * | |
989 | get_substitute_path_rule (const char *path) | |
990 | { | |
991 | struct substitute_path_rule *rule = substitute_path_rules; | |
992 | ||
993 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
994 | rule = rule->next; | |
995 | ||
996 | return rule; | |
997 | } | |
998 | ||
999 | /* If the user specified a source path substitution rule that applies | |
0b581c69 TT |
1000 | to PATH, then apply it and return the new path. |
1001 | ||
2f61ca93 JB |
1002 | Return NULL if no substitution rule was specified by the user, |
1003 | or if no rule applied to the given PATH. */ | |
0b581c69 TT |
1004 | |
1005 | gdb::unique_xmalloc_ptr<char> | |
2f61ca93 JB |
1006 | rewrite_source_path (const char *path) |
1007 | { | |
1008 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
1009 | char *new_path; | |
1010 | int from_len; | |
1011 | ||
1012 | if (rule == NULL) | |
1013 | return NULL; | |
1014 | ||
1015 | from_len = strlen (rule->from); | |
1016 | ||
1017 | /* Compute the rewritten path and return it. */ | |
1018 | ||
1019 | new_path = | |
1020 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
1021 | strcpy (new_path, rule->to); | |
1022 | strcat (new_path, path + from_len); | |
1023 | ||
0b581c69 | 1024 | return gdb::unique_xmalloc_ptr<char> (new_path); |
2f61ca93 JB |
1025 | } |
1026 | ||
2179fbc3 TT |
1027 | /* See source.h. */ |
1028 | ||
1029 | scoped_fd | |
e2357892 | 1030 | find_and_open_source (const char *filename, |
5e987968 | 1031 | const char *dirname, |
e0cc99a6 | 1032 | gdb::unique_xmalloc_ptr<char> *fullname) |
c906108c SS |
1033 | { |
1034 | char *path = source_path; | |
31889e00 | 1035 | const char *p; |
c906108c | 1036 | int result; |
c906108c | 1037 | |
c378eb4e | 1038 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1039 | |
57c22c6c | 1040 | if (*fullname) |
c906108c | 1041 | { |
2f61ca93 JB |
1042 | /* The user may have requested that source paths be rewritten |
1043 | according to substitution rules he provided. If a substitution | |
1044 | rule applies to this path, then apply it. */ | |
e0cc99a6 TT |
1045 | gdb::unique_xmalloc_ptr<char> rewritten_fullname |
1046 | = rewrite_source_path (fullname->get ()); | |
2f61ca93 JB |
1047 | |
1048 | if (rewritten_fullname != NULL) | |
e0cc99a6 | 1049 | *fullname = std::move (rewritten_fullname); |
2f61ca93 | 1050 | |
e0cc99a6 | 1051 | result = gdb_open_cloexec (fullname->get (), OPEN_MODE, 0); |
c906108c | 1052 | if (result >= 0) |
bc3aa6c3 | 1053 | { |
a0c1ffed TT |
1054 | if (basenames_may_differ) |
1055 | *fullname = gdb_realpath (fullname->get ()); | |
1056 | else | |
1057 | *fullname = gdb_abspath (fullname->get ()); | |
2179fbc3 | 1058 | return scoped_fd (result); |
bc3aa6c3 DE |
1059 | } |
1060 | ||
c378eb4e | 1061 | /* Didn't work -- free old one, try again. */ |
e0cc99a6 | 1062 | fullname->reset (NULL); |
c906108c SS |
1063 | } |
1064 | ||
0b581c69 | 1065 | gdb::unique_xmalloc_ptr<char> rewritten_dirname; |
57c22c6c | 1066 | if (dirname != NULL) |
c906108c | 1067 | { |
2f61ca93 JB |
1068 | /* If necessary, rewrite the compilation directory name according |
1069 | to the source path substitution rules specified by the user. */ | |
1070 | ||
0b581c69 | 1071 | rewritten_dirname = rewrite_source_path (dirname); |
2f61ca93 JB |
1072 | |
1073 | if (rewritten_dirname != NULL) | |
0b581c69 TT |
1074 | dirname = rewritten_dirname.get (); |
1075 | ||
c378eb4e MS |
1076 | /* Replace a path entry of $cdir with the compilation directory |
1077 | name. */ | |
c906108c | 1078 | #define cdir_len 5 |
33d0e35a | 1079 | p = strstr (source_path, "$cdir"); |
c906108c | 1080 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1081 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1082 | { |
1083 | int len; | |
1084 | ||
1085 | path = (char *) | |
57c22c6c | 1086 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1087 | len = p - source_path; |
c5aa993b | 1088 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1089 | strcpy (path + len, dirname); /* new stuff */ |
1090 | strcat (path + len, source_path + len + cdir_len); /* After | |
1091 | $cdir */ | |
c906108c SS |
1092 | } |
1093 | } | |
8da2a1df | 1094 | |
4fa0265e РИ |
1095 | gdb::unique_xmalloc_ptr<char> rewritten_filename |
1096 | = rewrite_source_path (filename); | |
56163ce1 | 1097 | |
4fa0265e РИ |
1098 | if (rewritten_filename != NULL) |
1099 | filename = rewritten_filename.get (); | |
c906108c | 1100 | |
a0c1ffed TT |
1101 | openp_flags flags = OPF_SEARCH_IN_PATH; |
1102 | if (basenames_may_differ) | |
1103 | flags |= OPF_RETURN_REALPATH; | |
f1b620e9 MG |
1104 | |
1105 | /* Try to locate file using filename. */ | |
a0c1ffed | 1106 | result = openp (path, flags, filename, OPEN_MODE, fullname); |
f1b620e9 MG |
1107 | if (result < 0 && dirname != NULL) |
1108 | { | |
1109 | /* Remove characters from the start of PATH that we don't need when | |
1110 | PATH is appended to a directory name. */ | |
1111 | const char *filename_start = prepare_path_for_appending (filename); | |
1112 | ||
1113 | /* Try to locate file using compilation dir + filename. This is | |
1114 | helpful if part of the compilation directory was removed, | |
1115 | e.g. using gcc's -fdebug-prefix-map, and we have added the missing | |
1116 | prefix to source_path. */ | |
1117 | std::string cdir_filename (dirname); | |
1118 | ||
1119 | /* Remove any trailing directory separators. */ | |
1120 | while (IS_DIR_SEPARATOR (cdir_filename.back ())) | |
1121 | cdir_filename.pop_back (); | |
1122 | ||
1123 | /* Add our own directory separator. */ | |
1124 | cdir_filename.append (SLASH_STRING); | |
1125 | cdir_filename.append (filename_start); | |
1126 | ||
1127 | result = openp (path, flags, cdir_filename.c_str (), OPEN_MODE, | |
1128 | fullname); | |
1129 | } | |
c906108c SS |
1130 | if (result < 0) |
1131 | { | |
c378eb4e | 1132 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1133 | p = lbasename (filename); |
1134 | if (p != filename) | |
a0c1ffed | 1135 | result = openp (path, flags, p, OPEN_MODE, fullname); |
c906108c | 1136 | } |
c906108c | 1137 | |
2179fbc3 | 1138 | return scoped_fd (result); |
c906108c SS |
1139 | } |
1140 | ||
57c22c6c BR |
1141 | /* Open a source file given a symtab S. Returns a file descriptor or |
1142 | negative number for error. | |
1143 | ||
85102364 | 1144 | This function is a convenience function to find_and_open_source. */ |
57c22c6c | 1145 | |
2179fbc3 | 1146 | scoped_fd |
57c22c6c BR |
1147 | open_source_file (struct symtab *s) |
1148 | { | |
5e987968 | 1149 | if (!s) |
2179fbc3 | 1150 | return scoped_fd (-1); |
57c22c6c | 1151 | |
54460946 | 1152 | gdb::unique_xmalloc_ptr<char> fullname (s->fullname); |
8e6a5953 | 1153 | s->fullname = NULL; |
2179fbc3 TT |
1154 | scoped_fd fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s), |
1155 | &fullname); | |
e0cc99a6 TT |
1156 | s->fullname = fullname.release (); |
1157 | return fd; | |
57c22c6c BR |
1158 | } |
1159 | ||
1160 | /* Finds the fullname that a symtab represents. | |
c906108c | 1161 | |
f35a17b5 JK |
1162 | This functions finds the fullname and saves it in s->fullname. |
1163 | It will also return the value. | |
57c22c6c BR |
1164 | |
1165 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1166 | the expected fullname is used. Therefore the files does not have to |
1167 | exist. */ | |
256f06f3 | 1168 | |
0b0865da | 1169 | const char * |
57c22c6c | 1170 | symtab_to_fullname (struct symtab *s) |
c906108c | 1171 | { |
256f06f3 DE |
1172 | /* Use cached copy if we have it. |
1173 | We rely on forget_cached_source_info being called appropriately | |
1174 | to handle cases like the file being moved. */ | |
f35a17b5 | 1175 | if (s->fullname == NULL) |
5e987968 | 1176 | { |
2179fbc3 | 1177 | scoped_fd fd = open_source_file (s); |
f35a17b5 | 1178 | |
2179fbc3 | 1179 | if (fd.get () < 0) |
f0a4b570 | 1180 | { |
0b581c69 | 1181 | gdb::unique_xmalloc_ptr<char> fullname; |
f0a4b570 JK |
1182 | |
1183 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1184 | should report the pathname where GDB tried to find the file. */ | |
1185 | ||
ee6f8984 | 1186 | if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename)) |
0b581c69 | 1187 | fullname.reset (xstrdup (s->filename)); |
f0a4b570 | 1188 | else |
0b581c69 TT |
1189 | fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING, |
1190 | s->filename, (char *) NULL)); | |
f0a4b570 | 1191 | |
0b581c69 | 1192 | s->fullname = rewrite_source_path (fullname.get ()).release (); |
f0a4b570 | 1193 | if (s->fullname == NULL) |
0b581c69 | 1194 | s->fullname = fullname.release (); |
f0a4b570 | 1195 | } |
f35a17b5 | 1196 | } |
c906108c | 1197 | |
f35a17b5 | 1198 | return s->fullname; |
57c22c6c | 1199 | } |
1b56eb55 JK |
1200 | |
1201 | /* See commentary in source.h. */ | |
1202 | ||
1203 | const char * | |
1204 | symtab_to_filename_for_display (struct symtab *symtab) | |
1205 | { | |
1206 | if (filename_display_string == filename_display_basename) | |
1207 | return lbasename (symtab->filename); | |
1208 | else if (filename_display_string == filename_display_absolute) | |
1209 | return symtab_to_fullname (symtab); | |
1210 | else if (filename_display_string == filename_display_relative) | |
1211 | return symtab->filename; | |
1212 | else | |
1213 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1214 | } | |
c906108c | 1215 | |
00df30ae AB |
1216 | \f |
1217 | ||
c906108c | 1218 | /* Print source lines from the file of symtab S, |
c378eb4e | 1219 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1220 | |
1221 | static void | |
dfaae886 | 1222 | print_source_lines_base (struct symtab *s, int line, int stopline, |
8d297bbf | 1223 | print_source_lines_flags flags) |
c906108c | 1224 | { |
b08b16c8 | 1225 | bool noprint = false; |
c906108c | 1226 | int nlines = stopline - line; |
79a45e25 | 1227 | struct ui_out *uiout = current_uiout; |
c906108c | 1228 | |
c378eb4e | 1229 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
1dd58850 TT |
1230 | current_source_location *loc |
1231 | = get_source_location (current_program_space); | |
1232 | ||
a75cd9a2 | 1233 | loc->set (s, line); |
c906108c | 1234 | first_line_listed = line; |
8b7fcda2 | 1235 | last_line_listed = line; |
c906108c | 1236 | |
3e43a32a | 1237 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1238 | number. */ |
112e8700 | 1239 | if (uiout->test_flags (ui_source_list)) |
8b93c638 | 1240 | { |
c378eb4e | 1241 | /* Only prints "No such file or directory" once. */ |
b08b16c8 | 1242 | if (s == last_source_visited) |
c5aa993b | 1243 | { |
b08b16c8 | 1244 | if (last_source_error) |
2179fbc3 | 1245 | { |
b08b16c8 TT |
1246 | flags |= PRINT_SOURCE_LINES_NOERROR; |
1247 | noprint = true; | |
2179fbc3 | 1248 | } |
c5aa993b JM |
1249 | } |
1250 | else | |
1251 | { | |
b08b16c8 TT |
1252 | last_source_visited = s; |
1253 | scoped_fd desc = open_source_file (s); | |
1254 | last_source_error = desc.get () < 0; | |
1255 | if (last_source_error) | |
1256 | noprint = true; | |
c5aa993b | 1257 | } |
8b93c638 JM |
1258 | } |
1259 | else | |
1260 | { | |
8d297bbf | 1261 | flags |= PRINT_SOURCE_LINES_NOERROR; |
b08b16c8 | 1262 | noprint = true; |
8b93c638 | 1263 | } |
c906108c | 1264 | |
2179fbc3 | 1265 | if (noprint) |
c906108c | 1266 | { |
dfaae886 | 1267 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1268 | { |
05cba821 JK |
1269 | const char *filename = symtab_to_filename_for_display (s); |
1270 | int len = strlen (filename) + 100; | |
224c3ddb | 1271 | char *name = (char *) alloca (len); |
08850b56 | 1272 | |
05cba821 | 1273 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1274 | print_sys_errmsg (name, errno); |
1275 | } | |
1276 | else | |
fc0ae648 | 1277 | { |
381befee | 1278 | uiout->field_signed ("line", line); |
112e8700 | 1279 | uiout->text ("\tin "); |
56d397a3 | 1280 | |
23eb71e4 JK |
1281 | /* CLI expects only the "file" field. TUI expects only the |
1282 | "fullname" field (and TUI does break if "file" is printed). | |
1283 | MI expects both fields. ui_source_list is set only for CLI, | |
1284 | not for TUI. */ | |
112e8700 | 1285 | if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list)) |
cbe56571 | 1286 | uiout->field_string ("file", symtab_to_filename_for_display (s), |
e43b10e1 | 1287 | file_name_style.style ()); |
112e8700 | 1288 | if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list)) |
8f1b8b82 JK |
1289 | { |
1290 | const char *s_fullname = symtab_to_fullname (s); | |
1291 | char *local_fullname; | |
1292 | ||
1293 | /* ui_out_field_string may free S_FULLNAME by calling | |
1294 | open_source_file for it again. See e.g., | |
1295 | tui_field_string->tui_show_source. */ | |
224c3ddb | 1296 | local_fullname = (char *) alloca (strlen (s_fullname) + 1); |
8f1b8b82 JK |
1297 | strcpy (local_fullname, s_fullname); |
1298 | ||
112e8700 | 1299 | uiout->field_string ("fullname", local_fullname); |
8f1b8b82 | 1300 | } |
23eb71e4 | 1301 | |
112e8700 | 1302 | uiout->text ("\n"); |
fc0ae648 | 1303 | } |
c906108c SS |
1304 | |
1305 | return; | |
1306 | } | |
1307 | ||
ec98a4ad | 1308 | /* If the user requested a sequence of lines that seems to go backward |
0e2a2133 AB |
1309 | (from high to low line numbers) then we don't print anything. */ |
1310 | if (stopline <= line) | |
ec98a4ad AB |
1311 | return; |
1312 | ||
62f29fda TT |
1313 | std::string lines; |
1314 | if (!g_source_cache.get_source_lines (s, line, stopline - 1, &lines)) | |
cb44333d TT |
1315 | { |
1316 | const std::vector<off_t> *offsets = nullptr; | |
1317 | g_source_cache.get_line_charpos (s, &offsets); | |
1318 | error (_("Line number %d out of range; %s has %d lines."), | |
1319 | line, symtab_to_filename_for_display (s), | |
1320 | offsets == nullptr ? 0 : (int) offsets->size ()); | |
1321 | } | |
c906108c | 1322 | |
62f29fda | 1323 | const char *iter = lines.c_str (); |
a75cd9a2 | 1324 | int new_lineno = loc->line (); |
a0087920 | 1325 | while (nlines-- > 0 && *iter != '\0') |
c906108c | 1326 | { |
8b93c638 JM |
1327 | char buf[20]; |
1328 | ||
a75cd9a2 | 1329 | last_line_listed = loc->line (); |
4cd29721 MM |
1330 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1331 | { | |
112e8700 SM |
1332 | uiout->text (symtab_to_filename_for_display (s)); |
1333 | uiout->text (":"); | |
4cd29721 | 1334 | } |
a75cd9a2 | 1335 | xsnprintf (buf, sizeof (buf), "%d\t", new_lineno++); |
112e8700 | 1336 | uiout->text (buf); |
a0087920 TT |
1337 | |
1338 | while (*iter != '\0') | |
8b93c638 | 1339 | { |
a0087920 TT |
1340 | /* Find a run of characters that can be emitted at once. |
1341 | This is done so that escape sequences are kept | |
1342 | together. */ | |
1343 | const char *start = iter; | |
1344 | while (true) | |
8b93c638 | 1345 | { |
a0087920 TT |
1346 | int skip_bytes; |
1347 | ||
1348 | char c = *iter; | |
1349 | if (c == '\033' && skip_ansi_escape (iter, &skip_bytes)) | |
1350 | iter += skip_bytes; | |
62160ec9 | 1351 | else if (c >= 0 && c < 040 && c != '\t') |
a0087920 TT |
1352 | break; |
1353 | else if (c == 0177) | |
1354 | break; | |
1355 | else | |
1356 | ++iter; | |
8b93c638 | 1357 | } |
a0087920 | 1358 | if (iter > start) |
8b93c638 | 1359 | { |
a0087920 TT |
1360 | std::string text (start, iter); |
1361 | uiout->text (text.c_str ()); | |
8b93c638 | 1362 | } |
a0087920 TT |
1363 | if (*iter == '\r') |
1364 | { | |
1365 | /* Treat either \r or \r\n as a single newline. */ | |
1366 | ++iter; | |
1367 | if (*iter == '\n') | |
1368 | ++iter; | |
1369 | break; | |
1370 | } | |
1371 | else if (*iter == '\n') | |
1372 | { | |
1373 | ++iter; | |
1374 | break; | |
1375 | } | |
1376 | else if (*iter > 0 && *iter < 040) | |
8b93c638 | 1377 | { |
a0087920 | 1378 | xsnprintf (buf, sizeof (buf), "^%c", *iter + 0100); |
112e8700 | 1379 | uiout->text (buf); |
62160ec9 | 1380 | ++iter; |
8b93c638 | 1381 | } |
a0087920 | 1382 | else if (*iter == 0177) |
62160ec9 TT |
1383 | { |
1384 | uiout->text ("^?"); | |
1385 | ++iter; | |
1386 | } | |
8b93c638 | 1387 | } |
a0087920 | 1388 | uiout->text ("\n"); |
c906108c | 1389 | } |
a75cd9a2 TT |
1390 | |
1391 | loc->set (loc->symtab (), new_lineno); | |
c906108c SS |
1392 | } |
1393 | \f | |
583068ca AB |
1394 | |
1395 | /* See source.h. */ | |
c906108c | 1396 | |
c5aa993b | 1397 | void |
dfaae886 | 1398 | print_source_lines (struct symtab *s, int line, int stopline, |
8d297bbf | 1399 | print_source_lines_flags flags) |
c906108c | 1400 | { |
dfaae886 | 1401 | print_source_lines_base (s, line, stopline, flags); |
c906108c | 1402 | } |
0e2a2133 AB |
1403 | |
1404 | /* See source.h. */ | |
1405 | ||
1406 | void | |
1407 | print_source_lines (struct symtab *s, source_lines_range line_range, | |
1408 | print_source_lines_flags flags) | |
1409 | { | |
1410 | print_source_lines_base (s, line_range.startline (), | |
1411 | line_range.stopline (), flags); | |
1412 | } | |
1413 | ||
1414 | ||
c906108c | 1415 | \f |
c906108c SS |
1416 | /* Print info on range of pc's in a specified line. */ |
1417 | ||
1418 | static void | |
1d12d88f | 1419 | info_line_command (const char *arg, int from_tty) |
c906108c | 1420 | { |
c906108c | 1421 | CORE_ADDR start_pc, end_pc; |
c906108c | 1422 | |
6c5b2ebe PA |
1423 | std::vector<symtab_and_line> decoded_sals; |
1424 | symtab_and_line curr_sal; | |
1425 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
1426 | |
1427 | if (arg == 0) | |
1428 | { | |
1dd58850 TT |
1429 | current_source_location *loc |
1430 | = get_source_location (current_program_space); | |
a75cd9a2 | 1431 | curr_sal.symtab = loc->symtab (); |
6c5b2ebe | 1432 | curr_sal.pspace = current_program_space; |
5166082f | 1433 | if (last_line_listed != 0) |
6c5b2ebe | 1434 | curr_sal.line = last_line_listed; |
5166082f | 1435 | else |
a75cd9a2 | 1436 | curr_sal.line = loc->line (); |
5166082f | 1437 | |
6c5b2ebe | 1438 | sals = curr_sal; |
c906108c SS |
1439 | } |
1440 | else | |
1441 | { | |
6c5b2ebe PA |
1442 | decoded_sals = decode_line_with_last_displayed (arg, |
1443 | DECODE_LINE_LIST_MODE); | |
1444 | sals = decoded_sals; | |
c5aa993b | 1445 | |
c906108c SS |
1446 | dont_repeat (); |
1447 | } | |
1448 | ||
1449 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1450 | specifies an overloaded function name. Print info on them all. */ |
6c5b2ebe | 1451 | for (const auto &sal : sals) |
c906108c | 1452 | { |
f8eba3c6 TT |
1453 | if (sal.pspace != current_program_space) |
1454 | continue; | |
c5aa993b | 1455 | |
c906108c SS |
1456 | if (sal.symtab == 0) |
1457 | { | |
5af949e3 UW |
1458 | struct gdbarch *gdbarch = get_current_arch (); |
1459 | ||
a3f17187 | 1460 | printf_filtered (_("No line number information available")); |
c906108c SS |
1461 | if (sal.pc != 0) |
1462 | { | |
1463 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1464 | user about a source line, at least let them have the symbolic |
1465 | address. */ | |
c906108c SS |
1466 | printf_filtered (" for address "); |
1467 | wrap_here (" "); | |
5af949e3 | 1468 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1469 | } |
1470 | else | |
1471 | printf_filtered ("."); | |
1472 | printf_filtered ("\n"); | |
1473 | } | |
1474 | else if (sal.line > 0 | |
1475 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1476 | { | |
eb822aa6 DE |
1477 | struct gdbarch *gdbarch |
1478 | = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); | |
5af949e3 | 1479 | |
c906108c SS |
1480 | if (start_pc == end_pc) |
1481 | { | |
1482 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1483 | sal.line, |
1484 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1485 | wrap_here (" "); |
1486 | printf_filtered (" is at address "); | |
5af949e3 | 1487 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1488 | wrap_here (" "); |
1489 | printf_filtered (" but contains no code.\n"); | |
1490 | } | |
1491 | else | |
1492 | { | |
1493 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1494 | sal.line, |
1495 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1496 | wrap_here (" "); |
1497 | printf_filtered (" starts at address "); | |
5af949e3 | 1498 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1499 | wrap_here (" "); |
1500 | printf_filtered (" and ends at "); | |
5af949e3 | 1501 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1502 | printf_filtered (".\n"); |
1503 | } | |
1504 | ||
1505 | /* x/i should display this line's code. */ | |
5af949e3 | 1506 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1507 | |
1508 | /* Repeating "info line" should do the following line. */ | |
1509 | last_line_listed = sal.line + 1; | |
1510 | ||
1511 | /* If this is the only line, show the source code. If it could | |
1512 | not find the file, don't do anything special. */ | |
0d3abd8c AB |
1513 | if (sals.size () == 1) |
1514 | annotate_source_line (sal.symtab, sal.line, 0, start_pc); | |
c906108c SS |
1515 | } |
1516 | else | |
1517 | /* Is there any case in which we get here, and have an address | |
1518 | which the user would want to see? If we have debugging symbols | |
1519 | and no line numbers? */ | |
a3f17187 | 1520 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1521 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1522 | } |
c906108c SS |
1523 | } |
1524 | \f | |
1525 | /* Commands to search the source file for a regexp. */ | |
1526 | ||
73e8dc90 PA |
1527 | /* Helper for forward_search_command/reverse_search_command. FORWARD |
1528 | indicates direction: true for forward, false for | |
1529 | backward/reverse. */ | |
1530 | ||
c906108c | 1531 | static void |
73e8dc90 | 1532 | search_command_helper (const char *regex, int from_tty, bool forward) |
c906108c | 1533 | { |
73e8dc90 | 1534 | const char *msg = re_comp (regex); |
c906108c | 1535 | if (msg) |
8a3fe4f8 | 1536 | error (("%s"), msg); |
c906108c | 1537 | |
1dd58850 TT |
1538 | current_source_location *loc |
1539 | = get_source_location (current_program_space); | |
a75cd9a2 | 1540 | if (loc->symtab () == nullptr) |
c906108c SS |
1541 | select_source_symtab (0); |
1542 | ||
a75cd9a2 | 1543 | scoped_fd desc (open_source_file (loc->symtab ())); |
77ad7394 | 1544 | if (desc.get () < 0) |
a75cd9a2 | 1545 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1546 | |
73e8dc90 PA |
1547 | int line = (forward |
1548 | ? last_line_listed + 1 | |
1549 | : last_line_listed - 1); | |
1550 | ||
cb44333d TT |
1551 | const std::vector<off_t> *offsets; |
1552 | if (line < 1 | |
a75cd9a2 | 1553 | || !g_source_cache.get_line_charpos (loc->symtab (), &offsets) |
cb44333d | 1554 | || line > offsets->size ()) |
9fe4a216 | 1555 | error (_("Expression not found")); |
c906108c | 1556 | |
cb44333d | 1557 | if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0) |
a75cd9a2 | 1558 | perror_with_name (symtab_to_filename_for_display (loc->symtab ())); |
c906108c | 1559 | |
2179fbc3 | 1560 | gdb_file_up stream = desc.to_file (FDOPEN_MODE); |
4a45905b | 1561 | clearerr (stream.get ()); |
73e8dc90 PA |
1562 | |
1563 | gdb::def_vector<char> buf; | |
1564 | buf.reserve (256); | |
1565 | ||
c5aa993b JM |
1566 | while (1) |
1567 | { | |
73e8dc90 | 1568 | buf.resize (0); |
c5aa993b | 1569 | |
73e8dc90 | 1570 | int c = fgetc (stream.get ()); |
c5aa993b JM |
1571 | if (c == EOF) |
1572 | break; | |
1573 | do | |
c906108c | 1574 | { |
73e8dc90 | 1575 | buf.push_back (c); |
c906108c | 1576 | } |
4a45905b | 1577 | while (c != '\n' && (c = fgetc (stream.get ())) >= 0); |
c906108c | 1578 | |
7be570e7 JM |
1579 | /* Remove the \r, if any, at the end of the line, otherwise |
1580 | regular expressions that end with $ or \n won't work. */ | |
73e8dc90 PA |
1581 | size_t sz = buf.size (); |
1582 | if (sz >= 2 && buf[sz - 2] == '\r') | |
7be570e7 | 1583 | { |
73e8dc90 PA |
1584 | buf[sz - 2] = '\n'; |
1585 | buf.resize (sz - 1); | |
7be570e7 | 1586 | } |
7be570e7 | 1587 | |
c378eb4e | 1588 | /* We now have a source line in buf, null terminate and match. */ |
73e8dc90 PA |
1589 | buf.push_back ('\0'); |
1590 | if (re_exec (buf.data ()) > 0) | |
c5aa993b | 1591 | { |
c378eb4e | 1592 | /* Match! */ |
a75cd9a2 | 1593 | print_source_lines (loc->symtab (), line, line + 1, 0); |
4fa62494 | 1594 | set_internalvar_integer (lookup_internalvar ("_"), line); |
a75cd9a2 | 1595 | loc->set (loc->symtab (), std::max (line - lines_to_list / 2, 1)); |
c5aa993b JM |
1596 | return; |
1597 | } | |
73e8dc90 PA |
1598 | |
1599 | if (forward) | |
1600 | line++; | |
1601 | else | |
1602 | { | |
1603 | line--; | |
b18ca514 PW |
1604 | if (line < 1) |
1605 | break; | |
cb44333d | 1606 | if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0) |
73e8dc90 PA |
1607 | { |
1608 | const char *filename | |
a75cd9a2 | 1609 | = symtab_to_filename_for_display (loc->symtab ()); |
73e8dc90 PA |
1610 | perror_with_name (filename); |
1611 | } | |
1612 | } | |
c5aa993b | 1613 | } |
c906108c | 1614 | |
a3f17187 | 1615 | printf_filtered (_("Expression not found\n")); |
c906108c SS |
1616 | } |
1617 | ||
c906108c | 1618 | static void |
73e8dc90 | 1619 | forward_search_command (const char *regex, int from_tty) |
c906108c | 1620 | { |
73e8dc90 PA |
1621 | search_command_helper (regex, from_tty, true); |
1622 | } | |
c906108c | 1623 | |
73e8dc90 PA |
1624 | static void |
1625 | reverse_search_command (const char *regex, int from_tty) | |
1626 | { | |
1627 | search_command_helper (regex, from_tty, false); | |
c906108c | 1628 | } |
2f61ca93 JB |
1629 | |
1630 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1631 | ||
1632 | static void | |
1633 | strip_trailing_directory_separator (char *path) | |
1634 | { | |
1635 | const int last = strlen (path) - 1; | |
1636 | ||
1637 | if (last < 0) | |
1638 | return; /* No stripping is needed if PATH is the empty string. */ | |
1639 | ||
1640 | if (IS_DIR_SEPARATOR (path[last])) | |
1641 | path[last] = '\0'; | |
1642 | } | |
1643 | ||
1644 | /* Return the path substitution rule that matches FROM. | |
1645 | Return NULL if no rule matches. */ | |
1646 | ||
1647 | static struct substitute_path_rule * | |
1648 | find_substitute_path_rule (const char *from) | |
1649 | { | |
1650 | struct substitute_path_rule *rule = substitute_path_rules; | |
1651 | ||
1652 | while (rule != NULL) | |
1653 | { | |
1654 | if (FILENAME_CMP (rule->from, from) == 0) | |
1655 | return rule; | |
1656 | rule = rule->next; | |
1657 | } | |
1658 | ||
1659 | return NULL; | |
1660 | } | |
1661 | ||
1662 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1663 | The new rule will replace FROM into TO. */ | |
1664 | ||
29b0e8a2 | 1665 | void |
2f61ca93 JB |
1666 | add_substitute_path_rule (char *from, char *to) |
1667 | { | |
1668 | struct substitute_path_rule *rule; | |
8d749320 | 1669 | struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule); |
2f61ca93 | 1670 | |
2f61ca93 JB |
1671 | new_rule->from = xstrdup (from); |
1672 | new_rule->to = xstrdup (to); | |
1673 | new_rule->next = NULL; | |
1674 | ||
1675 | /* If the list of rules are empty, then insert the new rule | |
1676 | at the head of the list. */ | |
1677 | ||
1678 | if (substitute_path_rules == NULL) | |
1679 | { | |
1680 | substitute_path_rules = new_rule; | |
1681 | return; | |
1682 | } | |
1683 | ||
1684 | /* Otherwise, skip to the last rule in our list and then append | |
1685 | the new rule. */ | |
1686 | ||
1687 | rule = substitute_path_rules; | |
1688 | while (rule->next != NULL) | |
1689 | rule = rule->next; | |
1690 | ||
1691 | rule->next = new_rule; | |
1692 | } | |
1693 | ||
1694 | /* Remove the given source path substitution rule from the current list | |
1695 | of rules. The memory allocated for that rule is also deallocated. */ | |
1696 | ||
1697 | static void | |
1698 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1699 | { | |
1700 | if (rule == substitute_path_rules) | |
1701 | substitute_path_rules = rule->next; | |
1702 | else | |
1703 | { | |
1704 | struct substitute_path_rule *prev = substitute_path_rules; | |
1705 | ||
1706 | while (prev != NULL && prev->next != rule) | |
1707 | prev = prev->next; | |
1708 | ||
1709 | gdb_assert (prev != NULL); | |
1710 | ||
1711 | prev->next = rule->next; | |
1712 | } | |
1713 | ||
1714 | xfree (rule->from); | |
1715 | xfree (rule->to); | |
1716 | xfree (rule); | |
1717 | } | |
1718 | ||
1719 | /* Implement the "show substitute-path" command. */ | |
1720 | ||
1721 | static void | |
a0d65762 | 1722 | show_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1723 | { |
1724 | struct substitute_path_rule *rule = substitute_path_rules; | |
2f61ca93 JB |
1725 | char *from = NULL; |
1726 | ||
773a1edc | 1727 | gdb_argv argv (args); |
2f61ca93 JB |
1728 | |
1729 | /* We expect zero or one argument. */ | |
1730 | ||
1731 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1732 | error (_("Too many arguments in command")); | |
1733 | ||
1734 | if (argv != NULL && argv[0] != NULL) | |
1735 | from = argv[0]; | |
1736 | ||
1737 | /* Print the substitution rules. */ | |
1738 | ||
1739 | if (from != NULL) | |
1740 | printf_filtered | |
1741 | (_("Source path substitution rule matching `%s':\n"), from); | |
1742 | else | |
1743 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1744 | ||
1745 | while (rule != NULL) | |
1746 | { | |
1e2ccb61 | 1747 | if (from == NULL || substitute_path_rule_matches (rule, from) != 0) |
2f61ca93 JB |
1748 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); |
1749 | rule = rule->next; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | /* Implement the "unset substitute-path" command. */ | |
1754 | ||
1755 | static void | |
a0d65762 | 1756 | unset_substitute_path_command (const char *args, int from_tty) |
2f61ca93 JB |
1757 | { |
1758 | struct substitute_path_rule *rule = substitute_path_rules; | |
773a1edc | 1759 | gdb_argv argv (args); |
2f61ca93 JB |
1760 | char *from = NULL; |
1761 | int rule_found = 0; | |
1762 | ||
1763 | /* This function takes either 0 or 1 argument. */ | |
1764 | ||
1765 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1766 | error (_("Incorrect usage, too many arguments in command")); | |
1767 | ||
1768 | if (argv != NULL && argv[0] != NULL) | |
1769 | from = argv[0]; | |
1770 | ||
1771 | /* If the user asked for all the rules to be deleted, ask him | |
1772 | to confirm and give him a chance to abort before the action | |
1773 | is performed. */ | |
1774 | ||
1775 | if (from == NULL | |
1776 | && !query (_("Delete all source path substitution rules? "))) | |
1777 | error (_("Canceled")); | |
1778 | ||
1779 | /* Delete the rule matching the argument. No argument means that | |
1780 | all rules should be deleted. */ | |
1781 | ||
1782 | while (rule != NULL) | |
1783 | { | |
1784 | struct substitute_path_rule *next = rule->next; | |
1785 | ||
1786 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1787 | { | |
1788 | delete_substitute_path_rule (rule); | |
1789 | rule_found = 1; | |
1790 | } | |
1791 | ||
1792 | rule = next; | |
1793 | } | |
1794 | ||
1795 | /* If the user asked for a specific rule to be deleted but | |
1796 | we could not find it, then report an error. */ | |
1797 | ||
1798 | if (from != NULL && !rule_found) | |
1799 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1800 | |
1801 | forget_cached_source_info (); | |
2f61ca93 JB |
1802 | } |
1803 | ||
1804 | /* Add a new source path substitution rule. */ | |
1805 | ||
1806 | static void | |
a0d65762 | 1807 | set_substitute_path_command (const char *args, int from_tty) |
2f61ca93 | 1808 | { |
2f61ca93 JB |
1809 | struct substitute_path_rule *rule; |
1810 | ||
773a1edc | 1811 | gdb_argv argv (args); |
2f61ca93 JB |
1812 | |
1813 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1814 | error (_("Incorrect usage, too few arguments in command")); | |
1815 | ||
1816 | if (argv[2] != NULL) | |
1817 | error (_("Incorrect usage, too many arguments in command")); | |
1818 | ||
1819 | if (*(argv[0]) == '\0') | |
1820 | error (_("First argument must be at least one character long")); | |
1821 | ||
1822 | /* Strip any trailing directory separator character in either FROM | |
1823 | or TO. The substitution rule already implicitly contains them. */ | |
1824 | strip_trailing_directory_separator (argv[0]); | |
1825 | strip_trailing_directory_separator (argv[1]); | |
1826 | ||
1827 | /* If a rule with the same "from" was previously defined, then | |
1828 | delete it. This new rule replaces it. */ | |
1829 | ||
1830 | rule = find_substitute_path_rule (argv[0]); | |
1831 | if (rule != NULL) | |
1832 | delete_substitute_path_rule (rule); | |
1833 | ||
1834 | /* Insert the new substitution rule. */ | |
1835 | ||
1836 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1837 | forget_cached_source_info (); |
2f61ca93 JB |
1838 | } |
1839 | ||
0e2a2133 AB |
1840 | /* See source.h. */ |
1841 | ||
1842 | source_lines_range::source_lines_range (int startline, | |
1843 | source_lines_range::direction dir) | |
1844 | { | |
1845 | if (dir == source_lines_range::FORWARD) | |
1846 | { | |
1847 | LONGEST end = static_cast <LONGEST> (startline) + get_lines_to_list (); | |
1848 | ||
1849 | if (end > INT_MAX) | |
1850 | end = INT_MAX; | |
1851 | ||
1852 | m_startline = startline; | |
1853 | m_stopline = static_cast <int> (end); | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | LONGEST start = static_cast <LONGEST> (startline) - get_lines_to_list (); | |
1858 | ||
1859 | if (start < 1) | |
1860 | start = 1; | |
1861 | ||
1862 | m_startline = static_cast <int> (start); | |
1863 | m_stopline = startline; | |
1864 | } | |
1865 | } | |
1866 | ||
c906108c | 1867 | \f |
6c265988 | 1868 | void _initialize_source (); |
c906108c | 1869 | void |
6c265988 | 1870 | _initialize_source () |
c906108c SS |
1871 | { |
1872 | struct cmd_list_element *c; | |
433759f7 | 1873 | |
c906108c SS |
1874 | init_source_path (); |
1875 | ||
1876 | /* The intention is to use POSIX Basic Regular Expressions. | |
1877 | Always use the GNU regex routine for consistency across all hosts. | |
1878 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1879 | just an approximation. */ | |
1880 | re_set_syntax (RE_SYNTAX_GREP); | |
1881 | ||
1a966eab AC |
1882 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1883 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1884 | Forget cached info on source file locations and line positions.\n\ |
1885 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1886 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1887 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1888 | &cmdlist); |
1889 | ||
1890 | if (dbx_commands) | |
c5aa993b | 1891 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1892 | |
5ba2abeb | 1893 | set_cmd_completer (c, filename_completer); |
c906108c | 1894 | |
99e7ae30 DE |
1895 | add_setshow_optional_filename_cmd ("directories", |
1896 | class_files, | |
1897 | &source_path, | |
1898 | _("\ | |
1899 | Set the search path for finding source files."), | |
1900 | _("\ | |
1901 | Show the search path for finding source files."), | |
1902 | _("\ | |
c906108c | 1903 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1904 | $cdir in the path means the compilation directory of the source file.\n\ |
1905 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1906 | appending these directories if necessary.\n\ | |
1907 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1908 | set_directories_command, | |
1909 | show_directories_command, | |
1910 | &setlist, &showlist); | |
c906108c | 1911 | |
11db9430 | 1912 | add_info ("source", info_source_command, |
1bedd215 | 1913 | _("Information about the current source file.")); |
c906108c | 1914 | |
11db9430 | 1915 | add_info ("line", info_line_command, _("\ |
1bedd215 | 1916 | Core addresses of the code for a source line.\n\ |
c906108c SS |
1917 | Line can be specified as\n\ |
1918 | LINENUM, to list around that line in current file,\n\ | |
1919 | FILE:LINENUM, to list around that line in that file,\n\ | |
1920 | FUNCTION, to list around beginning of that function,\n\ | |
1921 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1922 | Default is to describe the last source line that was listed.\n\n\ |
1923 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1924 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1925 | The address is also stored as the value of \"$_\".")); |
c906108c | 1926 | |
1bedd215 AC |
1927 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1928 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1929 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 1930 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 1931 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 1932 | |
1bedd215 AC |
1933 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1934 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1935 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1936 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c | 1937 | |
7f7cc265 | 1938 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 1939 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
1940 | Show number of source lines gdb will list by default."), _("\ |
1941 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
1942 | the \"list\" argument explicitly specifies some other number).\n\ | |
1943 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
1944 | NULL, |
1945 | show_lines_to_list, | |
1946 | &setlist, &showlist); | |
2f61ca93 JB |
1947 | |
1948 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1949 | _("\ | |
590042fc | 1950 | Add a substitution rule to rewrite the source directories.\n\ |
7ef2b397 | 1951 | Usage: set substitute-path FROM TO\n\ |
590042fc PW |
1952 | The rule is applied only if the directory name starts with FROM\n\ |
1953 | directly followed by a directory separator.\n\ | |
7ef2b397 JB |
1954 | If a substitution rule was previously set for FROM, the old rule\n\ |
1955 | is replaced by the new one."), | |
1956 | &setlist); | |
2f61ca93 JB |
1957 | |
1958 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
1959 | _("\ | |
590042fc | 1960 | Delete one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1961 | Usage: unset substitute-path [FROM]\n\ |
590042fc | 1962 | Delete the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 JB |
1963 | is not specified, all substituting rules are deleted.\n\ |
1964 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
1965 | &unsetlist); |
1966 | ||
1967 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 | 1968 | _("\ |
590042fc | 1969 | Show one or all substitution rules rewriting the source directories.\n\ |
7ef2b397 | 1970 | Usage: show substitute-path [FROM]\n\ |
590042fc | 1971 | Print the rule for substituting FROM in source directories. If FROM\n\ |
7ef2b397 | 1972 | is not specified, print all substitution rules."), |
2f61ca93 | 1973 | &showlist); |
1b56eb55 JK |
1974 | |
1975 | add_setshow_enum_cmd ("filename-display", class_files, | |
1976 | filename_display_kind_names, | |
1977 | &filename_display_string, _("\ | |
1978 | Set how to display filenames."), _("\ | |
1979 | Show how to display filenames."), _("\ | |
1980 | filename-display can be:\n\ | |
1981 | basename - display only basename of a filename\n\ | |
1982 | relative - display a filename relative to the compilation directory\n\ | |
1983 | absolute - display an absolute filename\n\ | |
1984 | By default, relative filenames are displayed."), | |
1985 | NULL, | |
1986 | show_filename_display_string, | |
1987 | &setlist, &showlist); | |
1988 | ||
c906108c | 1989 | } |