Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
a752853e | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
5e987968 | 3 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
a752853e | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "expression.h" | |
26 | #include "language.h" | |
27 | #include "command.h" | |
c2c6d25f | 28 | #include "source.h" |
c906108c SS |
29 | #include "gdbcmd.h" |
30 | #include "frame.h" | |
31 | #include "value.h" | |
32 | ||
33 | #include <sys/types.h> | |
34 | #include "gdb_string.h" | |
35 | #include "gdb_stat.h" | |
36 | #include <fcntl.h> | |
c906108c | 37 | #include "gdbcore.h" |
88987551 | 38 | #include "gdb_regex.h" |
c906108c SS |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
41 | #include "annotate.h" | |
42 | #include "gdbtypes.h" | |
c5f0f3d0 | 43 | #include "linespec.h" |
fe4e3eb8 | 44 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 45 | #include "completer.h" |
8b93c638 | 46 | #include "ui-out.h" |
dbda9972 | 47 | #include "readline/readline.h" |
c906108c SS |
48 | |
49 | #ifdef CRLF_SOURCE_FILES | |
50 | ||
51 | /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the | |
52 | host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is | |
53 | much faster than defining LSEEK_NOT_LINEAR. */ | |
54 | ||
55 | #ifndef O_BINARY | |
56 | #define O_BINARY 0 | |
57 | #endif | |
58 | ||
59 | #define OPEN_MODE (O_RDONLY | O_BINARY) | |
60 | #define FDOPEN_MODE FOPEN_RB | |
61 | ||
62 | #else /* ! defined (CRLF_SOURCE_FILES) */ | |
63 | ||
64 | #define OPEN_MODE O_RDONLY | |
65 | #define FDOPEN_MODE FOPEN_RT | |
66 | ||
67 | #endif /* ! defined (CRLF_SOURCE_FILES) */ | |
68 | ||
c906108c SS |
69 | /* Prototypes for exported functions. */ |
70 | ||
a14ed312 | 71 | void _initialize_source (void); |
c906108c SS |
72 | |
73 | /* Prototypes for local functions. */ | |
74 | ||
a14ed312 | 75 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 76 | |
a14ed312 | 77 | static void reverse_search_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void forward_search_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void line_info (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void source_info (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void show_directories (char *, int); |
c906108c SS |
86 | |
87 | /* Path of directories to search for source files. | |
88 | Same format as the PATH environment variable's value. */ | |
89 | ||
90 | char *source_path; | |
91 | ||
92 | /* Symtab of default file for listing lines of. */ | |
93 | ||
0378c332 | 94 | static struct symtab *current_source_symtab; |
c906108c SS |
95 | |
96 | /* Default next line to list. */ | |
97 | ||
0378c332 | 98 | static int current_source_line; |
c906108c SS |
99 | |
100 | /* Default number of lines to print with commands like "list". | |
101 | This is based on guessing how many long (i.e. more than chars_per_line | |
102 | characters) lines there will be. To be completely correct, "list" | |
103 | and friends should be rewritten to count characters and see where | |
104 | things are wrapping, but that would be a fair amount of work. */ | |
105 | ||
106 | int lines_to_list = 10; | |
107 | ||
108 | /* Line number of last line printed. Default for various commands. | |
109 | current_source_line is usually, but not always, the same as this. */ | |
110 | ||
111 | static int last_line_listed; | |
112 | ||
113 | /* First line number listed by last listing command. */ | |
114 | ||
115 | static int first_line_listed; | |
116 | ||
117 | /* Saves the name of the last source file visited and a possible error code. | |
118 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
119 | ||
120 | static struct symtab *last_source_visited = NULL; | |
121 | static int last_source_error = 0; | |
c906108c | 122 | \f |
0378c332 FN |
123 | /* Return the first line listed by print_source_lines. |
124 | Used by command interpreters to request listing from | |
125 | a previous point. */ | |
126 | ||
127 | int | |
128 | get_first_line_listed (void) | |
129 | { | |
130 | return first_line_listed; | |
131 | } | |
132 | ||
133 | /* Return the default number of lines to print with commands like the | |
134 | cli "list". The caller of print_source_lines must use this to | |
135 | calculate the end line and use it in the call to print_source_lines | |
136 | as it does not automatically use this value. */ | |
137 | ||
138 | int | |
139 | get_lines_to_list (void) | |
140 | { | |
141 | return lines_to_list; | |
142 | } | |
143 | ||
144 | /* Return the current source file for listing and next line to list. | |
145 | NOTE: The returned sal pc and end fields are not valid. */ | |
146 | ||
147 | struct symtab_and_line | |
148 | get_current_source_symtab_and_line (void) | |
149 | { | |
150 | struct symtab_and_line cursal; | |
151 | ||
152 | cursal.symtab = current_source_symtab; | |
153 | cursal.line = current_source_line; | |
53cb0458 FN |
154 | cursal.pc = 0; |
155 | cursal.end = 0; | |
0378c332 FN |
156 | |
157 | return cursal; | |
158 | } | |
159 | ||
53cb0458 FN |
160 | /* If the current source file for listing is not set, try and get a default. |
161 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 162 | It may err out if a default cannot be determined. |
53cb0458 FN |
163 | We must be cautious about where it is called, as it can recurse as the |
164 | process of determining a new default may call the caller! | |
165 | Use get_current_source_symtab_and_line only to get whatever | |
166 | we have without erroring out or trying to get a default. */ | |
0378c332 | 167 | |
53cb0458 FN |
168 | void |
169 | set_default_source_symtab_and_line (void) | |
0378c332 FN |
170 | { |
171 | struct symtab_and_line cursal; | |
172 | ||
173 | if (!have_full_symbols () && !have_partial_symbols ()) | |
174 | error ("No symbol table is loaded. Use the \"file\" command."); | |
175 | ||
176 | /* Pull in a current source symtab if necessary */ | |
177 | if (current_source_symtab == 0) | |
178 | select_source_symtab (0); | |
0378c332 FN |
179 | } |
180 | ||
181 | /* Return the current default file for listing and next line to list | |
182 | (the returned sal pc and end fields are not valid.) | |
53cb0458 FN |
183 | and set the current default to whatever is in SAL. |
184 | NOTE: The returned sal pc and end fields are not valid. */ | |
0378c332 FN |
185 | |
186 | struct symtab_and_line | |
53cb0458 | 187 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 FN |
188 | { |
189 | struct symtab_and_line cursal; | |
190 | ||
191 | cursal.symtab = current_source_symtab; | |
192 | cursal.line = current_source_line; | |
193 | ||
194 | current_source_symtab = sal->symtab; | |
195 | current_source_line = sal->line; | |
c214a6fd FN |
196 | cursal.pc = 0; |
197 | cursal.end = 0; | |
0378c332 FN |
198 | |
199 | return cursal; | |
200 | } | |
201 | ||
202 | /* Reset any information stored about a default file and line to print. */ | |
203 | ||
204 | void | |
205 | clear_current_source_symtab_and_line (void) | |
206 | { | |
207 | current_source_symtab = 0; | |
208 | current_source_line = 0; | |
209 | } | |
c5aa993b | 210 | |
c906108c SS |
211 | /* Set the source file default for the "list" command to be S. |
212 | ||
213 | If S is NULL, and we don't have a default, find one. This | |
214 | should only be called when the user actually tries to use the | |
215 | default, since we produce an error if we can't find a reasonable | |
216 | default. Also, since this can cause symbols to be read, doing it | |
217 | before we need to would make things slower than necessary. */ | |
218 | ||
219 | void | |
aa1ee363 | 220 | select_source_symtab (struct symtab *s) |
c906108c SS |
221 | { |
222 | struct symtabs_and_lines sals; | |
223 | struct symtab_and_line sal; | |
224 | struct partial_symtab *ps; | |
225 | struct partial_symtab *cs_pst = 0; | |
226 | struct objfile *ofp; | |
c5aa993b | 227 | |
c906108c SS |
228 | if (s) |
229 | { | |
230 | current_source_symtab = s; | |
231 | current_source_line = 1; | |
232 | return; | |
233 | } | |
234 | ||
235 | if (current_source_symtab) | |
236 | return; | |
237 | ||
238 | /* Make the default place to list be the function `main' | |
239 | if one exists. */ | |
176620f1 | 240 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0, NULL)) |
c906108c | 241 | { |
51cc5b07 | 242 | sals = decode_line_spec (main_name (), 1); |
c906108c | 243 | sal = sals.sals[0]; |
b8c9b27d | 244 | xfree (sals.sals); |
c906108c SS |
245 | current_source_symtab = sal.symtab; |
246 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
247 | if (current_source_symtab) | |
c5aa993b | 248 | return; |
c906108c | 249 | } |
c5aa993b | 250 | |
c906108c SS |
251 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
252 | ||
253 | current_source_line = 1; | |
254 | ||
c5aa993b | 255 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 256 | { |
c5aa993b | 257 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 258 | { |
c5aa993b | 259 | char *name = s->filename; |
c906108c | 260 | int len = strlen (name); |
cb137aa5 | 261 | if (!(len > 2 && (DEPRECATED_STREQ (&name[len - 2], ".h")))) |
c906108c SS |
262 | { |
263 | current_source_symtab = s; | |
264 | } | |
265 | } | |
266 | } | |
267 | if (current_source_symtab) | |
268 | return; | |
269 | ||
270 | /* Howabout the partial symbol tables? */ | |
271 | ||
c5aa993b | 272 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 273 | { |
c5aa993b | 274 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 275 | { |
c5aa993b | 276 | char *name = ps->filename; |
c906108c | 277 | int len = strlen (name); |
cb137aa5 | 278 | if (!(len > 2 && (DEPRECATED_STREQ (&name[len - 2], ".h")))) |
c906108c SS |
279 | { |
280 | cs_pst = ps; | |
281 | } | |
282 | } | |
283 | } | |
284 | if (cs_pst) | |
285 | { | |
c5aa993b | 286 | if (cs_pst->readin) |
c906108c | 287 | { |
8e65ff28 AC |
288 | internal_error (__FILE__, __LINE__, |
289 | "select_source_symtab: " | |
290 | "readin pst found and no symtabs."); | |
c906108c SS |
291 | } |
292 | else | |
293 | { | |
294 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
295 | } | |
296 | } | |
297 | if (current_source_symtab) | |
298 | return; | |
299 | ||
300 | error ("Can't find a default source file"); | |
301 | } | |
302 | \f | |
303 | static void | |
fba45db2 | 304 | show_directories (char *ignore, int from_tty) |
c906108c SS |
305 | { |
306 | puts_filtered ("Source directories searched: "); | |
307 | puts_filtered (source_path); | |
308 | puts_filtered ("\n"); | |
309 | } | |
310 | ||
311 | /* Forget what we learned about line positions in source files, and | |
312 | which directories contain them; must check again now since files | |
313 | may be found in a different directory now. */ | |
314 | ||
315 | void | |
fba45db2 | 316 | forget_cached_source_info (void) |
c906108c | 317 | { |
52f0bd74 AC |
318 | struct symtab *s; |
319 | struct objfile *objfile; | |
58d370e0 | 320 | struct partial_symtab *pst; |
c906108c | 321 | |
c5aa993b | 322 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 323 | { |
c5aa993b | 324 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 325 | { |
c5aa993b | 326 | if (s->line_charpos != NULL) |
c906108c | 327 | { |
aac7f4ea | 328 | xmfree (objfile->md, s->line_charpos); |
c5aa993b | 329 | s->line_charpos = NULL; |
c906108c | 330 | } |
c5aa993b | 331 | if (s->fullname != NULL) |
c906108c | 332 | { |
aac7f4ea | 333 | xmfree (objfile->md, s->fullname); |
c5aa993b | 334 | s->fullname = NULL; |
c906108c SS |
335 | } |
336 | } | |
58d370e0 TT |
337 | |
338 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
339 | { | |
340 | if (pst->fullname != NULL) | |
341 | { | |
342 | xfree (pst->fullname); | |
343 | pst->fullname = NULL; | |
344 | } | |
345 | } | |
c906108c SS |
346 | } |
347 | } | |
348 | ||
349 | void | |
fba45db2 | 350 | init_source_path (void) |
c906108c SS |
351 | { |
352 | char buf[20]; | |
353 | ||
354 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 355 | source_path = xstrdup (buf); |
c906108c SS |
356 | forget_cached_source_info (); |
357 | } | |
358 | ||
c04e0a08 JJ |
359 | void |
360 | init_last_source_visited (void) | |
361 | { | |
362 | last_source_visited = NULL; | |
363 | } | |
364 | ||
c906108c | 365 | /* Add zero or more directories to the front of the source path. */ |
c5aa993b | 366 | |
c906108c | 367 | void |
fba45db2 | 368 | directory_command (char *dirname, int from_tty) |
c906108c SS |
369 | { |
370 | dont_repeat (); | |
371 | /* FIXME, this goes to "delete dir"... */ | |
372 | if (dirname == 0) | |
373 | { | |
43ff13b4 | 374 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c | 375 | { |
b8c9b27d | 376 | xfree (source_path); |
c906108c SS |
377 | init_source_path (); |
378 | } | |
379 | } | |
380 | else | |
381 | { | |
382 | mod_path (dirname, &source_path); | |
383 | last_source_visited = NULL; | |
384 | } | |
385 | if (from_tty) | |
c5aa993b | 386 | show_directories ((char *) 0, from_tty); |
c906108c SS |
387 | forget_cached_source_info (); |
388 | } | |
389 | ||
390 | /* Add zero or more directories to the front of an arbitrary path. */ | |
391 | ||
392 | void | |
fba45db2 | 393 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
394 | { |
395 | add_path (dirname, which_path, 1); | |
396 | } | |
397 | ||
398 | /* Workhorse of mod_path. Takes an extra argument to determine | |
399 | if dirname should be parsed for separators that indicate multiple | |
400 | directories. This allows for interfaces that pre-parse the dirname | |
401 | and allow specification of traditional separator characters such | |
402 | as space or tab. */ | |
403 | ||
404 | void | |
405 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
406 | { |
407 | char *old = *which_path; | |
408 | int prefix = 0; | |
409 | ||
410 | if (dirname == 0) | |
411 | return; | |
412 | ||
4fcf66da | 413 | dirname = xstrdup (dirname); |
b8c9b27d | 414 | make_cleanup (xfree, dirname); |
c906108c SS |
415 | |
416 | do | |
417 | { | |
418 | char *name = dirname; | |
aa1ee363 | 419 | char *p; |
c906108c SS |
420 | struct stat st; |
421 | ||
422 | { | |
c04e0a08 JJ |
423 | char *separator = NULL; |
424 | char *space = NULL; | |
425 | char *tab = NULL; | |
426 | ||
427 | if (parse_separators) | |
428 | { | |
429 | separator = strchr (name, DIRNAME_SEPARATOR); | |
430 | space = strchr (name, ' '); | |
431 | tab = strchr (name, '\t'); | |
432 | } | |
c906108c | 433 | |
c5aa993b | 434 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
435 | p = dirname = name + strlen (name); |
436 | else | |
437 | { | |
438 | p = 0; | |
439 | if (separator != 0 && (p == 0 || separator < p)) | |
440 | p = separator; | |
441 | if (space != 0 && (p == 0 || space < p)) | |
442 | p = space; | |
443 | if (tab != 0 && (p == 0 || tab < p)) | |
444 | p = tab; | |
445 | dirname = p + 1; | |
446 | while (*dirname == DIRNAME_SEPARATOR | |
447 | || *dirname == ' ' | |
448 | || *dirname == '\t') | |
449 | ++dirname; | |
450 | } | |
451 | } | |
452 | ||
fe4e3eb8 | 453 | if (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ |
c3690141 | 454 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 455 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
fe4e3eb8 | 456 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 457 | #endif |
fe4e3eb8 | 458 | && IS_DIR_SEPARATOR (p[-1])) |
c906108c SS |
459 | /* Sigh. "foo/" => "foo" */ |
460 | --p; | |
c906108c SS |
461 | *p = '\0'; |
462 | ||
7be570e7 | 463 | while (p > name && p[-1] == '.') |
c906108c SS |
464 | { |
465 | if (p - name == 1) | |
466 | { | |
467 | /* "." => getwd (). */ | |
468 | name = current_directory; | |
469 | goto append; | |
470 | } | |
fe4e3eb8 | 471 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
472 | { |
473 | if (p - name == 2) | |
474 | { | |
475 | /* "/." => "/". */ | |
476 | *--p = '\0'; | |
477 | goto append; | |
478 | } | |
479 | else | |
480 | { | |
481 | /* "...foo/." => "...foo". */ | |
482 | p -= 2; | |
483 | *p = '\0'; | |
484 | continue; | |
485 | } | |
486 | } | |
487 | else | |
488 | break; | |
489 | } | |
490 | ||
491 | if (name[0] == '~') | |
492 | name = tilde_expand (name); | |
c3690141 | 493 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 494 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
7be570e7 JM |
495 | name = concat (name, ".", NULL); |
496 | #endif | |
fe4e3eb8 | 497 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
c5aa993b | 498 | name = concat (current_directory, SLASH_STRING, name, NULL); |
c906108c SS |
499 | else |
500 | name = savestring (name, p - name); | |
b8c9b27d | 501 | make_cleanup (xfree, name); |
c906108c SS |
502 | |
503 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
504 | if (name[0] != '$') |
505 | { | |
506 | /* These are warnings, not errors, since we don't want a | |
507 | non-existent directory in a .gdbinit file to stop processing | |
508 | of the .gdbinit file. | |
509 | ||
510 | Whether they get added to the path is more debatable. Current | |
511 | answer is yes, in case the user wants to go make the directory | |
512 | or whatever. If the directory continues to not exist/not be | |
513 | a directory/etc, then having them in the path should be | |
514 | harmless. */ | |
515 | if (stat (name, &st) < 0) | |
516 | { | |
517 | int save_errno = errno; | |
518 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
519 | print_sys_errmsg (name, save_errno); | |
520 | } | |
521 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
522 | warning ("%s is not a directory.", name); | |
523 | } | |
c906108c SS |
524 | |
525 | append: | |
526 | { | |
aa1ee363 | 527 | unsigned int len = strlen (name); |
c906108c SS |
528 | |
529 | p = *which_path; | |
530 | while (1) | |
531 | { | |
7be570e7 JM |
532 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
533 | MS-Windows because of case-insensitivity and two different | |
534 | but functionally identical slash characters. We need a | |
535 | special filesystem-dependent file-name comparison function. | |
536 | ||
537 | Actually, even on Unix I would use realpath() or its work- | |
538 | alike before comparing. Then all the code above which | |
539 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
540 | if (!strncmp (p, name, len) |
541 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
542 | { | |
543 | /* Found it in the search path, remove old copy */ | |
544 | if (p > *which_path) | |
c5aa993b | 545 | p--; /* Back over leading separator */ |
c906108c SS |
546 | if (prefix > p - *which_path) |
547 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 548 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
549 | } |
550 | p = strchr (p, DIRNAME_SEPARATOR); | |
551 | if (p != 0) | |
552 | ++p; | |
553 | else | |
554 | break; | |
555 | } | |
556 | if (p == 0) | |
557 | { | |
558 | char tinybuf[2]; | |
559 | ||
560 | tinybuf[0] = DIRNAME_SEPARATOR; | |
561 | tinybuf[1] = '\0'; | |
562 | ||
c04e0a08 JJ |
563 | /* If we have already tacked on a name(s) in this command, be sure they stay |
564 | on the front as we tack on some more. */ | |
c906108c SS |
565 | if (prefix) |
566 | { | |
567 | char *temp, c; | |
568 | ||
569 | c = old[prefix]; | |
570 | old[prefix] = '\0'; | |
571 | temp = concat (old, tinybuf, name, NULL); | |
572 | old[prefix] = c; | |
573 | *which_path = concat (temp, "", &old[prefix], NULL); | |
574 | prefix = strlen (temp); | |
b8c9b27d | 575 | xfree (temp); |
c906108c SS |
576 | } |
577 | else | |
578 | { | |
579 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
580 | prefix = strlen (name); | |
581 | } | |
b8c9b27d | 582 | xfree (old); |
c906108c SS |
583 | old = *which_path; |
584 | } | |
585 | } | |
c5aa993b JM |
586 | skip_dup:; |
587 | } | |
588 | while (*dirname != '\0'); | |
c906108c SS |
589 | } |
590 | ||
591 | ||
592 | static void | |
fba45db2 | 593 | source_info (char *ignore, int from_tty) |
c906108c | 594 | { |
52f0bd74 | 595 | struct symtab *s = current_source_symtab; |
c906108c SS |
596 | |
597 | if (!s) | |
598 | { | |
c5aa993b | 599 | printf_filtered ("No current source file.\n"); |
c906108c SS |
600 | return; |
601 | } | |
602 | printf_filtered ("Current source file is %s\n", s->filename); | |
603 | if (s->dirname) | |
604 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
605 | if (s->fullname) | |
606 | printf_filtered ("Located in %s\n", s->fullname); | |
607 | if (s->nlines) | |
608 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
609 | s->nlines == 1 ? "" : "s"); | |
610 | ||
611 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
612 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
919d772c JB |
613 | printf_filtered ("%s preprocessor macro info.\n", |
614 | s->macro_table ? "Includes" : "Does not include"); | |
c906108c | 615 | } |
c5aa993b | 616 | \f |
c906108c | 617 | |
1da1a192 JB |
618 | /* Return True if the file NAME exists and is a regular file */ |
619 | static int | |
620 | is_regular_file (const char *name) | |
621 | { | |
622 | struct stat st; | |
623 | const int status = stat (name, &st); | |
624 | ||
625 | /* Stat should never fail except when the file does not exist. | |
626 | If stat fails, analyze the source of error and return True | |
627 | unless the file does not exist, to avoid returning false results | |
628 | on obscure systems where stat does not work as expected. | |
629 | */ | |
630 | if (status != 0) | |
631 | return (errno != ENOENT); | |
632 | ||
633 | return S_ISREG (st.st_mode); | |
634 | } | |
c906108c | 635 | |
c906108c SS |
636 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
637 | using mode MODE and protection bits PROT in the calls to open. | |
638 | ||
639 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
640 | (ie pretend the first element of PATH is "."). This also indicates | |
641 | that a slash in STRING disables searching of the path (this is | |
642 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
643 | get that particular version of foo or an error message). | |
644 | ||
e7a8479f | 645 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 646 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
647 | have to take special pains to avoid doubling the "/" between the directory |
648 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
649 | source file name!!! | |
650 | ||
651 | If a file is found, return the descriptor. | |
652 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
653 | ||
654 | /* >>>> This should only allow files of certain types, | |
f2172603 | 655 | >>>> eg executable, non-directory */ |
c906108c | 656 | int |
1f8cc6db AC |
657 | openp (const char *path, int try_cwd_first, const char *string, |
658 | int mode, int prot, | |
fba45db2 | 659 | char **filename_opened) |
c906108c | 660 | { |
52f0bd74 AC |
661 | int fd; |
662 | char *filename; | |
1f8cc6db AC |
663 | const char *p; |
664 | const char *p1; | |
52f0bd74 | 665 | int len; |
c906108c SS |
666 | int alloclen; |
667 | ||
668 | if (!path) | |
669 | path = "."; | |
670 | ||
608506ed | 671 | #if defined(_WIN32) || defined(__CYGWIN__) |
c906108c SS |
672 | mode |= O_BINARY; |
673 | #endif | |
674 | ||
072b1022 | 675 | if (try_cwd_first || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
676 | { |
677 | int i; | |
072b1022 DJ |
678 | |
679 | if (is_regular_file (string)) | |
680 | { | |
681 | filename = alloca (strlen (string) + 1); | |
682 | strcpy (filename, string); | |
683 | fd = open (filename, mode, prot); | |
684 | if (fd >= 0) | |
685 | goto done; | |
686 | } | |
687 | else | |
3f565f1e DJ |
688 | { |
689 | filename = NULL; | |
690 | fd = -1; | |
691 | } | |
072b1022 | 692 | |
c906108c | 693 | for (i = 0; string[i]; i++) |
fe4e3eb8 | 694 | if (IS_DIR_SEPARATOR (string[i])) |
c906108c SS |
695 | goto done; |
696 | } | |
697 | ||
698 | /* ./foo => foo */ | |
fe4e3eb8 | 699 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
700 | string += 2; |
701 | ||
702 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 703 | filename = alloca (alloclen); |
c906108c SS |
704 | fd = -1; |
705 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
706 | { | |
1f8cc6db | 707 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
708 | if (p1) |
709 | len = p1 - p; | |
710 | else | |
711 | len = strlen (p); | |
712 | ||
713 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
714 | && p[2] == 'w' && p[3] == 'd') |
715 | { | |
716 | /* Name is $cwd -- insert current directory name instead. */ | |
717 | int newlen; | |
718 | ||
719 | /* First, realloc the filename buffer if too short. */ | |
720 | len = strlen (current_directory); | |
721 | newlen = len + strlen (string) + 2; | |
722 | if (newlen > alloclen) | |
723 | { | |
724 | alloclen = newlen; | |
1f8cc6db | 725 | filename = alloca (alloclen); |
c5aa993b JM |
726 | } |
727 | strcpy (filename, current_directory); | |
728 | } | |
729 | else | |
730 | { | |
731 | /* Normal file name in path -- just use it. */ | |
732 | strncpy (filename, p, len); | |
733 | filename[len] = 0; | |
c906108c | 734 | } |
c906108c SS |
735 | |
736 | /* Remove trailing slashes */ | |
fe4e3eb8 | 737 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
738 | filename[--len] = 0; |
739 | ||
c5aa993b | 740 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
741 | strcat (filename, string); |
742 | ||
1da1a192 | 743 | if (is_regular_file (filename)) |
5e987968 AS |
744 | { |
745 | fd = open (filename, mode); | |
746 | if (fd >= 0) | |
747 | break; | |
748 | } | |
c906108c SS |
749 | } |
750 | ||
c5aa993b | 751 | done: |
c906108c SS |
752 | if (filename_opened) |
753 | { | |
a89f66e4 JB |
754 | /* If a file was opened, canonicalize its filename. Use xfullpath |
755 | rather than gdb_realpath to avoid resolving the basename part | |
756 | of filenames when the associated file is a symbolic link. This | |
757 | fixes a potential inconsistency between the filenames known to | |
758 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 759 | if (fd < 0) |
1f8cc6db | 760 | *filename_opened = NULL; |
fe4e3eb8 | 761 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 762 | *filename_opened = xfullpath (filename); |
c906108c SS |
763 | else |
764 | { | |
765 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b | 766 | |
58d370e0 | 767 | char *f = concat (current_directory, |
5e987968 AS |
768 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
769 | ? "" : SLASH_STRING, | |
770 | filename, NULL); | |
a89f66e4 | 771 | *filename_opened = xfullpath (f); |
58d370e0 | 772 | xfree (f); |
c5aa993b | 773 | } |
c906108c | 774 | } |
c906108c SS |
775 | |
776 | return fd; | |
777 | } | |
778 | ||
c5aa993b | 779 | |
c906108c SS |
780 | /* This is essentially a convenience, for clients that want the behaviour |
781 | of openp, using source_path, but that really don't want the file to be | |
782 | opened but want instead just to know what the full pathname is (as | |
783 | qualified against source_path). | |
784 | ||
785 | The current working directory is searched first. | |
786 | ||
787 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
788 | set to the fully-qualified pathname. | |
789 | ||
5e987968 | 790 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 791 | int |
fba45db2 | 792 | source_full_path_of (char *filename, char **full_pathname) |
c906108c | 793 | { |
c5aa993b | 794 | int fd; |
c906108c SS |
795 | |
796 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
797 | if (fd < 0) | |
798 | { | |
799 | *full_pathname = NULL; | |
800 | return 0; | |
801 | } | |
802 | ||
803 | close (fd); | |
804 | return 1; | |
805 | } | |
806 | ||
57c22c6c BR |
807 | /* This function is capable of finding the absolute path to a |
808 | source file, and opening it, provided you give it an | |
809 | OBJFILE and FILENAME. Both the DIRNAME and FULLNAME are only | |
810 | added suggestions on where to find the file. | |
811 | ||
812 | OBJFILE should be the objfile associated with a psymtab or symtab. | |
813 | FILENAME should be the filename to open. | |
814 | DIRNAME is the compilation directory of a particular source file. | |
815 | Only some debug formats provide this info. | |
816 | FULLNAME can be the last known absolute path to the file in question. | |
817 | ||
818 | On Success | |
819 | A valid file descriptor is returned. ( the return value is positive ) | |
820 | FULLNAME is set to the absolute path to the file just opened. | |
821 | ||
822 | On Failure | |
823 | A non valid file descriptor is returned. ( the return value is negitive ) | |
824 | FULLNAME is set to NULL. */ | |
c906108c | 825 | int |
57c22c6c | 826 | find_and_open_source (struct objfile *objfile, |
5e987968 AS |
827 | const char *filename, |
828 | const char *dirname, | |
829 | char **fullname) | |
c906108c SS |
830 | { |
831 | char *path = source_path; | |
31889e00 | 832 | const char *p; |
c906108c | 833 | int result; |
c906108c SS |
834 | |
835 | /* Quick way out if we already know its full name */ | |
57c22c6c | 836 | if (*fullname) |
c906108c | 837 | { |
57c22c6c | 838 | result = open (*fullname, OPEN_MODE); |
c906108c | 839 | if (result >= 0) |
c5aa993b | 840 | return result; |
c906108c | 841 | /* Didn't work -- free old one, try again. */ |
57c22c6c BR |
842 | xmfree (objfile->md, *fullname); |
843 | *fullname = NULL; | |
c906108c SS |
844 | } |
845 | ||
57c22c6c | 846 | if (dirname != NULL) |
c906108c SS |
847 | { |
848 | /* Replace a path entry of $cdir with the compilation directory name */ | |
849 | #define cdir_len 5 | |
850 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
851 | which produces a "required warning" when assigned to a nonconst. */ |
852 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 853 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 854 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
855 | { |
856 | int len; | |
857 | ||
858 | path = (char *) | |
57c22c6c | 859 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 860 | len = p - source_path; |
c5aa993b | 861 | strncpy (path, source_path, len); /* Before $cdir */ |
57c22c6c | 862 | strcpy (path + len, dirname); /* new stuff */ |
c5aa993b | 863 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ |
c906108c SS |
864 | } |
865 | } | |
866 | ||
57c22c6c | 867 | result = openp (path, 0, filename, OPEN_MODE, 0, fullname); |
c906108c SS |
868 | if (result < 0) |
869 | { | |
870 | /* Didn't work. Try using just the basename. */ | |
57c22c6c BR |
871 | p = lbasename (filename); |
872 | if (p != filename) | |
873 | result = openp (path, 0, p, OPEN_MODE, 0, fullname); | |
c906108c | 874 | } |
c906108c SS |
875 | |
876 | if (result >= 0) | |
877 | { | |
57c22c6c BR |
878 | char *tmp_fullname; |
879 | tmp_fullname = *fullname; | |
880 | *fullname = mstrsave (objfile->md, *fullname); | |
881 | xfree (tmp_fullname); | |
c906108c SS |
882 | } |
883 | return result; | |
884 | } | |
885 | ||
57c22c6c BR |
886 | /* Open a source file given a symtab S. Returns a file descriptor or |
887 | negative number for error. | |
888 | ||
889 | This function is a convience function to find_and_open_source. */ | |
890 | ||
891 | int | |
892 | open_source_file (struct symtab *s) | |
893 | { | |
5e987968 AS |
894 | if (!s) |
895 | return -1; | |
57c22c6c BR |
896 | |
897 | return find_and_open_source (s->objfile, s->filename, s->dirname, | |
5e987968 | 898 | &s->fullname); |
57c22c6c BR |
899 | } |
900 | ||
901 | /* Finds the fullname that a symtab represents. | |
c906108c | 902 | |
57c22c6c BR |
903 | If this functions finds the fullname, it will save it in ps->fullname |
904 | and it will also return the value. | |
905 | ||
906 | If this function fails to find the file that this symtab represents, | |
907 | NULL will be returned and ps->fullname will be set to NULL. */ | |
c906108c | 908 | char * |
57c22c6c | 909 | symtab_to_fullname (struct symtab *s) |
c906108c | 910 | { |
57c22c6c | 911 | int r; |
c906108c SS |
912 | |
913 | if (!s) | |
914 | return NULL; | |
915 | ||
57c22c6c BR |
916 | /* Don't check s->fullname here, the file could have been |
917 | deleted/moved/..., look for it again */ | |
5e987968 AS |
918 | r = find_and_open_source (s->objfile, s->filename, s->dirname, |
919 | &s->fullname); | |
c906108c | 920 | |
57c22c6c | 921 | if (r) |
5e987968 AS |
922 | { |
923 | close (r); | |
924 | return s->fullname; | |
925 | } | |
c906108c | 926 | |
57c22c6c BR |
927 | return NULL; |
928 | } | |
c906108c | 929 | |
57c22c6c | 930 | /* Finds the fullname that a partial_symtab represents. |
c906108c | 931 | |
57c22c6c BR |
932 | If this functions finds the fullname, it will save it in ps->fullname |
933 | and it will also return the value. | |
c906108c | 934 | |
57c22c6c BR |
935 | If this function fails to find the file that this partial_symtab represents, |
936 | NULL will be returned and ps->fullname will be set to NULL. */ | |
937 | char * | |
938 | psymtab_to_fullname (struct partial_symtab *ps) | |
939 | { | |
940 | int r; | |
941 | ||
942 | if (!ps) | |
943 | return NULL; | |
944 | ||
945 | /* Don't check ps->fullname here, the file could have been | |
946 | deleted/moved/..., look for it again */ | |
5e987968 AS |
947 | r = find_and_open_source (ps->objfile, ps->filename, ps->dirname, |
948 | &ps->fullname); | |
57c22c6c BR |
949 | |
950 | if (r) | |
5e987968 AS |
951 | { |
952 | close (r); | |
953 | return ps->fullname; | |
954 | } | |
955 | ||
57c22c6c BR |
956 | return NULL; |
957 | } | |
5e987968 | 958 | \f |
c906108c SS |
959 | /* Create and initialize the table S->line_charpos that records |
960 | the positions of the lines in the source file, which is assumed | |
961 | to be open on descriptor DESC. | |
962 | All set S->nlines to the number of such lines. */ | |
963 | ||
964 | void | |
fba45db2 | 965 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
966 | { |
967 | struct stat st; | |
52f0bd74 | 968 | char *data, *p, *end; |
c906108c SS |
969 | int nlines = 0; |
970 | int lines_allocated = 1000; | |
971 | int *line_charpos; | |
972 | long mtime = 0; | |
973 | int size; | |
974 | ||
c5aa993b | 975 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
976 | lines_allocated * sizeof (int)); |
977 | if (fstat (desc, &st) < 0) | |
978 | perror_with_name (s->filename); | |
979 | ||
980 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 981 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 982 | else if (exec_bfd) |
c5aa993b | 983 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
984 | |
985 | if (mtime && mtime < st.st_mtime) | |
986 | { | |
c5aa993b | 987 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
988 | } |
989 | ||
990 | #ifdef LSEEK_NOT_LINEAR | |
991 | { | |
992 | char c; | |
993 | ||
994 | /* Have to read it byte by byte to find out where the chars live */ | |
995 | ||
996 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
997 | nlines = 1; | |
c5aa993b | 998 | while (myread (desc, &c, 1) > 0) |
c906108c | 999 | { |
c5aa993b | 1000 | if (c == '\n') |
c906108c | 1001 | { |
c5aa993b | 1002 | if (nlines == lines_allocated) |
c906108c SS |
1003 | { |
1004 | lines_allocated *= 2; | |
1005 | line_charpos = | |
c5aa993b | 1006 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
1007 | sizeof (int) * lines_allocated); |
1008 | } | |
1009 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
1010 | } | |
1011 | } | |
1012 | } | |
1013 | #else /* lseek linear. */ | |
1014 | { | |
1015 | struct cleanup *old_cleanups; | |
1016 | ||
1017 | /* st_size might be a large type, but we only support source files whose | |
1018 | size fits in an int. */ | |
1019 | size = (int) st.st_size; | |
1020 | ||
1021 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1022 | run into various kinds of limits on stack size. */ | |
1023 | data = (char *) xmalloc (size); | |
b8c9b27d | 1024 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1025 | |
1026 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1027 | size = myread (desc, data, size); | |
1028 | if (size < 0) | |
1029 | perror_with_name (s->filename); | |
1030 | end = data + size; | |
1031 | p = data; | |
1032 | line_charpos[0] = 0; | |
1033 | nlines = 1; | |
1034 | while (p != end) | |
1035 | { | |
1036 | if (*p++ == '\n' | |
c5aa993b | 1037 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1038 | && p != end) |
1039 | { | |
1040 | if (nlines == lines_allocated) | |
1041 | { | |
1042 | lines_allocated *= 2; | |
1043 | line_charpos = | |
c5aa993b | 1044 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
1045 | sizeof (int) * lines_allocated); |
1046 | } | |
1047 | line_charpos[nlines++] = p - data; | |
1048 | } | |
1049 | } | |
1050 | do_cleanups (old_cleanups); | |
1051 | } | |
1052 | #endif /* lseek linear. */ | |
1053 | s->nlines = nlines; | |
1054 | s->line_charpos = | |
c5aa993b JM |
1055 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
1056 | nlines * sizeof (int)); | |
c906108c SS |
1057 | |
1058 | } | |
1059 | ||
1060 | /* Return the character position of a line LINE in symtab S. | |
1061 | Return 0 if anything is invalid. */ | |
1062 | ||
c5aa993b | 1063 | #if 0 /* Currently unused */ |
c906108c SS |
1064 | |
1065 | int | |
fba45db2 | 1066 | source_line_charpos (struct symtab *s, int line) |
c906108c | 1067 | { |
c5aa993b JM |
1068 | if (!s) |
1069 | return 0; | |
1070 | if (!s->line_charpos || line <= 0) | |
1071 | return 0; | |
c906108c SS |
1072 | if (line > s->nlines) |
1073 | line = s->nlines; | |
1074 | return s->line_charpos[line - 1]; | |
1075 | } | |
1076 | ||
1077 | /* Return the line number of character position POS in symtab S. */ | |
1078 | ||
1079 | int | |
aa1ee363 | 1080 | source_charpos_line (struct symtab *s, int chr) |
c906108c | 1081 | { |
52f0bd74 AC |
1082 | int line = 0; |
1083 | int *lnp; | |
c5aa993b JM |
1084 | |
1085 | if (s == 0 || s->line_charpos == 0) | |
1086 | return 0; | |
c906108c SS |
1087 | lnp = s->line_charpos; |
1088 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 1089 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
1090 | { |
1091 | line++; | |
1092 | lnp++; | |
1093 | } | |
1094 | if (line >= s->nlines) | |
1095 | line = s->nlines; | |
1096 | return line; | |
1097 | } | |
1098 | ||
c5aa993b | 1099 | #endif /* 0 */ |
c906108c | 1100 | \f |
c5aa993b | 1101 | |
c906108c SS |
1102 | /* Get full pathname and line number positions for a symtab. |
1103 | Return nonzero if line numbers may have changed. | |
1104 | Set *FULLNAME to actual name of the file as found by `openp', | |
1105 | or to 0 if the file is not found. */ | |
1106 | ||
1107 | static int | |
fba45db2 | 1108 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1109 | { |
52f0bd74 | 1110 | int desc, linenums_changed = 0; |
c5aa993b | 1111 | |
c906108c SS |
1112 | desc = open_source_file (s); |
1113 | if (desc < 0) | |
1114 | { | |
1115 | if (fullname) | |
1116 | *fullname = NULL; | |
1117 | return 0; | |
c5aa993b | 1118 | } |
c906108c SS |
1119 | if (fullname) |
1120 | *fullname = s->fullname; | |
c5aa993b JM |
1121 | if (s->line_charpos == 0) |
1122 | linenums_changed = 1; | |
1123 | if (linenums_changed) | |
1124 | find_source_lines (s, desc); | |
c906108c SS |
1125 | close (desc); |
1126 | return linenums_changed; | |
1127 | } | |
1128 | ||
1129 | /* Print text describing the full name of the source file S | |
1130 | and the line number LINE and its corresponding character position. | |
1131 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1132 | can easily find it. | |
1133 | ||
1134 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1135 | ||
1136 | Return 1 if successful, 0 if could not find the file. */ | |
1137 | ||
1138 | int | |
fba45db2 KB |
1139 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1140 | CORE_ADDR pc) | |
c906108c SS |
1141 | { |
1142 | if (s->line_charpos == 0) | |
c5aa993b | 1143 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1144 | if (s->fullname == 0) |
1145 | return 0; | |
1146 | if (line > s->nlines) | |
1147 | /* Don't index off the end of the line_charpos array. */ | |
1148 | return 0; | |
1149 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
1150 | mid_statement, pc); | |
1151 | ||
1152 | current_source_line = line; | |
1153 | first_line_listed = line; | |
1154 | last_line_listed = line; | |
1155 | current_source_symtab = s; | |
1156 | return 1; | |
1157 | } | |
c906108c | 1158 | \f |
c5aa993b | 1159 | |
c906108c SS |
1160 | /* Print source lines from the file of symtab S, |
1161 | starting with line number LINE and stopping before line number STOPLINE. */ | |
1162 | ||
a14ed312 KB |
1163 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1164 | int noerror); | |
c906108c | 1165 | static void |
fba45db2 | 1166 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1167 | { |
52f0bd74 AC |
1168 | int c; |
1169 | int desc; | |
1170 | FILE *stream; | |
c906108c SS |
1171 | int nlines = stopline - line; |
1172 | ||
1173 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
1174 | current_source_symtab = s; | |
1175 | current_source_line = line; | |
1176 | first_line_listed = line; | |
1177 | ||
8b93c638 JM |
1178 | /* If printing of source lines is disabled, just print file and line number */ |
1179 | if (ui_out_test_flags (uiout, ui_source_list)) | |
1180 | { | |
c5aa993b JM |
1181 | /* Only prints "No such file or directory" once */ |
1182 | if ((s != last_source_visited) || (!last_source_error)) | |
1183 | { | |
1184 | last_source_visited = s; | |
1185 | desc = open_source_file (s); | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | desc = last_source_error; | |
1190 | noerror = 1; | |
1191 | } | |
8b93c638 JM |
1192 | } |
1193 | else | |
1194 | { | |
1195 | desc = -1; | |
1196 | noerror = 1; | |
1197 | } | |
c906108c SS |
1198 | |
1199 | if (desc < 0) | |
1200 | { | |
1201 | last_source_error = desc; | |
1202 | ||
c5aa993b JM |
1203 | if (!noerror) |
1204 | { | |
c906108c SS |
1205 | char *name = alloca (strlen (s->filename) + 100); |
1206 | sprintf (name, "%d\t%s", line, s->filename); | |
1207 | print_sys_errmsg (name, errno); | |
1208 | } | |
1209 | else | |
8b93c638 JM |
1210 | ui_out_field_int (uiout, "line", line); |
1211 | ui_out_text (uiout, "\tin "); | |
1212 | ui_out_field_string (uiout, "file", s->filename); | |
1213 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1214 | |
1215 | return; | |
1216 | } | |
1217 | ||
1218 | last_source_error = 0; | |
1219 | ||
1220 | if (s->line_charpos == 0) | |
1221 | find_source_lines (s, desc); | |
1222 | ||
1223 | if (line < 1 || line > s->nlines) | |
1224 | { | |
1225 | close (desc); | |
1226 | error ("Line number %d out of range; %s has %d lines.", | |
1227 | line, s->filename, s->nlines); | |
1228 | } | |
1229 | ||
1230 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1231 | { | |
1232 | close (desc); | |
1233 | perror_with_name (s->filename); | |
1234 | } | |
1235 | ||
1236 | stream = fdopen (desc, FDOPEN_MODE); | |
1237 | clearerr (stream); | |
1238 | ||
1239 | while (nlines-- > 0) | |
1240 | { | |
8b93c638 JM |
1241 | char buf[20]; |
1242 | ||
1243 | c = fgetc (stream); | |
1244 | if (c == EOF) | |
1245 | break; | |
1246 | last_line_listed = current_source_line; | |
1247 | sprintf (buf, "%d\t", current_source_line++); | |
1248 | ui_out_text (uiout, buf); | |
1249 | do | |
1250 | { | |
1251 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1252 | { | |
1253 | sprintf (buf, "^%c", c + 0100); | |
1254 | ui_out_text (uiout, buf); | |
1255 | } | |
1256 | else if (c == 0177) | |
1257 | ui_out_text (uiout, "^?"); | |
1258 | #ifdef CRLF_SOURCE_FILES | |
1259 | else if (c == '\r') | |
1260 | { | |
1261 | /* Skip a \r character, but only before a \n. */ | |
1262 | int c1 = fgetc (stream); | |
1263 | ||
1264 | if (c1 != '\n') | |
1265 | printf_filtered ("^%c", c + 0100); | |
1266 | if (c1 != EOF) | |
1267 | ungetc (c1, stream); | |
1268 | } | |
1269 | #endif | |
1270 | else | |
1271 | { | |
1272 | sprintf (buf, "%c", c); | |
1273 | ui_out_text (uiout, buf); | |
1274 | } | |
1275 | } | |
1276 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1277 | } |
1278 | ||
1279 | fclose (stream); | |
1280 | } | |
1281 | \f | |
1282 | /* Show source lines from the file of symtab S, starting with line | |
1283 | number LINE and stopping before line number STOPLINE. If this is the | |
1284 | not the command line version, then the source is shown in the source | |
1285 | window otherwise it is simply printed */ | |
1286 | ||
c5aa993b | 1287 | void |
fba45db2 | 1288 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1289 | { |
c5aa993b | 1290 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1291 | } |
1292 | \f | |
c906108c SS |
1293 | /* Print info on range of pc's in a specified line. */ |
1294 | ||
1295 | static void | |
fba45db2 | 1296 | line_info (char *arg, int from_tty) |
c906108c SS |
1297 | { |
1298 | struct symtabs_and_lines sals; | |
1299 | struct symtab_and_line sal; | |
1300 | CORE_ADDR start_pc, end_pc; | |
1301 | int i; | |
1302 | ||
fe39c653 | 1303 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1304 | |
1305 | if (arg == 0) | |
1306 | { | |
1307 | sal.symtab = current_source_symtab; | |
1308 | sal.line = last_line_listed; | |
1309 | sals.nelts = 1; | |
1310 | sals.sals = (struct symtab_and_line *) | |
1311 | xmalloc (sizeof (struct symtab_and_line)); | |
1312 | sals.sals[0] = sal; | |
1313 | } | |
1314 | else | |
1315 | { | |
1316 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1317 | |
c906108c SS |
1318 | dont_repeat (); |
1319 | } | |
1320 | ||
1321 | /* C++ More than one line may have been specified, as when the user | |
1322 | specifies an overloaded function name. Print info on them all. */ | |
1323 | for (i = 0; i < sals.nelts; i++) | |
1324 | { | |
1325 | sal = sals.sals[i]; | |
c5aa993b | 1326 | |
c906108c SS |
1327 | if (sal.symtab == 0) |
1328 | { | |
1329 | printf_filtered ("No line number information available"); | |
1330 | if (sal.pc != 0) | |
1331 | { | |
1332 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1333 | user about a source line, at least let them have the symbolic |
1334 | address. */ | |
c906108c SS |
1335 | printf_filtered (" for address "); |
1336 | wrap_here (" "); | |
1337 | print_address (sal.pc, gdb_stdout); | |
1338 | } | |
1339 | else | |
1340 | printf_filtered ("."); | |
1341 | printf_filtered ("\n"); | |
1342 | } | |
1343 | else if (sal.line > 0 | |
1344 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1345 | { | |
1346 | if (start_pc == end_pc) | |
1347 | { | |
1348 | printf_filtered ("Line %d of \"%s\"", | |
1349 | sal.line, sal.symtab->filename); | |
1350 | wrap_here (" "); | |
1351 | printf_filtered (" is at address "); | |
1352 | print_address (start_pc, gdb_stdout); | |
1353 | wrap_here (" "); | |
1354 | printf_filtered (" but contains no code.\n"); | |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | printf_filtered ("Line %d of \"%s\"", | |
1359 | sal.line, sal.symtab->filename); | |
1360 | wrap_here (" "); | |
1361 | printf_filtered (" starts at address "); | |
1362 | print_address (start_pc, gdb_stdout); | |
1363 | wrap_here (" "); | |
1364 | printf_filtered (" and ends at "); | |
1365 | print_address (end_pc, gdb_stdout); | |
1366 | printf_filtered (".\n"); | |
1367 | } | |
1368 | ||
1369 | /* x/i should display this line's code. */ | |
1370 | set_next_address (start_pc); | |
1371 | ||
1372 | /* Repeating "info line" should do the following line. */ | |
1373 | last_line_listed = sal.line + 1; | |
1374 | ||
1375 | /* If this is the only line, show the source code. If it could | |
1376 | not find the file, don't do anything special. */ | |
1377 | if (annotation_level && sals.nelts == 1) | |
1378 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1379 | } | |
1380 | else | |
1381 | /* Is there any case in which we get here, and have an address | |
1382 | which the user would want to see? If we have debugging symbols | |
1383 | and no line numbers? */ | |
1384 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1385 | sal.line, sal.symtab->filename); | |
1386 | } | |
b8c9b27d | 1387 | xfree (sals.sals); |
c906108c SS |
1388 | } |
1389 | \f | |
1390 | /* Commands to search the source file for a regexp. */ | |
1391 | ||
c906108c | 1392 | static void |
fba45db2 | 1393 | forward_search_command (char *regex, int from_tty) |
c906108c | 1394 | { |
52f0bd74 AC |
1395 | int c; |
1396 | int desc; | |
1397 | FILE *stream; | |
c906108c SS |
1398 | int line; |
1399 | char *msg; | |
1400 | ||
c906108c | 1401 | line = last_line_listed + 1; |
c906108c SS |
1402 | |
1403 | msg = (char *) re_comp (regex); | |
1404 | if (msg) | |
306d9ac5 | 1405 | error ("%s", msg); |
c906108c SS |
1406 | |
1407 | if (current_source_symtab == 0) | |
1408 | select_source_symtab (0); | |
1409 | ||
1410 | desc = open_source_file (current_source_symtab); | |
1411 | if (desc < 0) | |
1412 | perror_with_name (current_source_symtab->filename); | |
1413 | ||
1414 | if (current_source_symtab->line_charpos == 0) | |
1415 | find_source_lines (current_source_symtab, desc); | |
1416 | ||
1417 | if (line < 1 || line > current_source_symtab->nlines) | |
1418 | { | |
1419 | close (desc); | |
1420 | error ("Expression not found"); | |
1421 | } | |
1422 | ||
1423 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1424 | { | |
1425 | close (desc); | |
1426 | perror_with_name (current_source_symtab->filename); | |
1427 | } | |
1428 | ||
1429 | stream = fdopen (desc, FDOPEN_MODE); | |
1430 | clearerr (stream); | |
c5aa993b JM |
1431 | while (1) |
1432 | { | |
1433 | static char *buf = NULL; | |
aa1ee363 | 1434 | char *p; |
c5aa993b JM |
1435 | int cursize, newsize; |
1436 | ||
1437 | cursize = 256; | |
1438 | buf = xmalloc (cursize); | |
1439 | p = buf; | |
1440 | ||
1441 | c = getc (stream); | |
1442 | if (c == EOF) | |
1443 | break; | |
1444 | do | |
c906108c | 1445 | { |
c5aa993b JM |
1446 | *p++ = c; |
1447 | if (p - buf == cursize) | |
1448 | { | |
1449 | newsize = cursize + cursize / 2; | |
1450 | buf = xrealloc (buf, newsize); | |
1451 | p = buf + cursize; | |
1452 | cursize = newsize; | |
1453 | } | |
c906108c | 1454 | } |
c5aa993b | 1455 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1456 | |
7be570e7 JM |
1457 | #ifdef CRLF_SOURCE_FILES |
1458 | /* Remove the \r, if any, at the end of the line, otherwise | |
1459 | regular expressions that end with $ or \n won't work. */ | |
1460 | if (p - buf > 1 && p[-2] == '\r') | |
1461 | { | |
1462 | p--; | |
1463 | p[-1] = '\n'; | |
1464 | } | |
1465 | #endif | |
1466 | ||
c5aa993b JM |
1467 | /* we now have a source line in buf, null terminate and match */ |
1468 | *p = 0; | |
1469 | if (re_exec (buf) > 0) | |
1470 | { | |
1471 | /* Match! */ | |
1472 | fclose (stream); | |
c5aa993b JM |
1473 | print_source_lines (current_source_symtab, line, line + 1, 0); |
1474 | set_internalvar (lookup_internalvar ("_"), | |
1475 | value_from_longest (builtin_type_int, | |
1476 | (LONGEST) line)); | |
1477 | current_source_line = max (line - lines_to_list / 2, 1); | |
1478 | return; | |
1479 | } | |
1480 | line++; | |
1481 | } | |
c906108c SS |
1482 | |
1483 | printf_filtered ("Expression not found\n"); | |
1484 | fclose (stream); | |
1485 | } | |
1486 | ||
c906108c | 1487 | static void |
fba45db2 | 1488 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1489 | { |
52f0bd74 AC |
1490 | int c; |
1491 | int desc; | |
1492 | FILE *stream; | |
c906108c SS |
1493 | int line; |
1494 | char *msg; | |
063190b6 | 1495 | |
c906108c | 1496 | line = last_line_listed - 1; |
c906108c SS |
1497 | |
1498 | msg = (char *) re_comp (regex); | |
1499 | if (msg) | |
306d9ac5 | 1500 | error ("%s", msg); |
c906108c SS |
1501 | |
1502 | if (current_source_symtab == 0) | |
1503 | select_source_symtab (0); | |
1504 | ||
1505 | desc = open_source_file (current_source_symtab); | |
1506 | if (desc < 0) | |
1507 | perror_with_name (current_source_symtab->filename); | |
1508 | ||
1509 | if (current_source_symtab->line_charpos == 0) | |
1510 | find_source_lines (current_source_symtab, desc); | |
1511 | ||
1512 | if (line < 1 || line > current_source_symtab->nlines) | |
1513 | { | |
1514 | close (desc); | |
1515 | error ("Expression not found"); | |
1516 | } | |
1517 | ||
1518 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1519 | { | |
1520 | close (desc); | |
1521 | perror_with_name (current_source_symtab->filename); | |
1522 | } | |
1523 | ||
1524 | stream = fdopen (desc, FDOPEN_MODE); | |
1525 | clearerr (stream); | |
1526 | while (line > 1) | |
1527 | { | |
1528 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1529 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1530 | char *p = buf; |
c906108c SS |
1531 | |
1532 | c = getc (stream); | |
1533 | if (c == EOF) | |
1534 | break; | |
c5aa993b JM |
1535 | do |
1536 | { | |
1537 | *p++ = c; | |
1538 | } | |
1539 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1540 | |
7be570e7 JM |
1541 | #ifdef CRLF_SOURCE_FILES |
1542 | /* Remove the \r, if any, at the end of the line, otherwise | |
1543 | regular expressions that end with $ or \n won't work. */ | |
1544 | if (p - buf > 1 && p[-2] == '\r') | |
1545 | { | |
1546 | p--; | |
1547 | p[-1] = '\n'; | |
1548 | } | |
1549 | #endif | |
1550 | ||
c906108c SS |
1551 | /* We now have a source line in buf; null terminate and match. */ |
1552 | *p = 0; | |
1553 | if (re_exec (buf) > 0) | |
1554 | { | |
1555 | /* Match! */ | |
1556 | fclose (stream); | |
c5aa993b | 1557 | print_source_lines (current_source_symtab, line, line + 1, 0); |
c906108c SS |
1558 | set_internalvar (lookup_internalvar ("_"), |
1559 | value_from_longest (builtin_type_int, | |
1560 | (LONGEST) line)); | |
1561 | current_source_line = max (line - lines_to_list / 2, 1); | |
1562 | return; | |
1563 | } | |
1564 | line--; | |
1565 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1566 | { | |
1567 | fclose (stream); | |
1568 | perror_with_name (current_source_symtab->filename); | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | printf_filtered ("Expression not found\n"); | |
1573 | fclose (stream); | |
1574 | return; | |
1575 | } | |
1576 | \f | |
1577 | void | |
fba45db2 | 1578 | _initialize_source (void) |
c906108c SS |
1579 | { |
1580 | struct cmd_list_element *c; | |
1581 | current_source_symtab = 0; | |
1582 | init_source_path (); | |
1583 | ||
1584 | /* The intention is to use POSIX Basic Regular Expressions. | |
1585 | Always use the GNU regex routine for consistency across all hosts. | |
1586 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1587 | just an approximation. */ | |
1588 | re_set_syntax (RE_SYNTAX_GREP); | |
1589 | ||
1590 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1591 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1592 | Forget cached info on source file locations and line positions.\n\ |
1593 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1594 | directory in which the source file was compiled into object code.\n\ | |
1595 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1596 | &cmdlist); | |
1597 | ||
1598 | if (dbx_commands) | |
c5aa993b | 1599 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1600 | |
5ba2abeb | 1601 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1602 | |
1603 | add_cmd ("directories", no_class, show_directories, | |
1604 | "Current search path for finding source files.\n\ | |
1605 | $cwd in the path means the current working directory.\n\ | |
1606 | $cdir in the path means the compilation directory of the source file.", | |
1607 | &showlist); | |
1608 | ||
1609 | if (xdb_commands) | |
1610 | { | |
c5aa993b | 1611 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1612 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1613 | "Current search path for finding source files.\n\ |
c906108c SS |
1614 | $cwd in the path means the current working directory.\n\ |
1615 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1616 | &cmdlist); |
c906108c SS |
1617 | } |
1618 | ||
1619 | add_info ("source", source_info, | |
1620 | "Information about the current source file."); | |
1621 | ||
1622 | add_info ("line", line_info, | |
1623 | concat ("Core addresses of the code for a source line.\n\ | |
1624 | Line can be specified as\n\ | |
1625 | LINENUM, to list around that line in current file,\n\ | |
1626 | FILE:LINENUM, to list around that line in that file,\n\ | |
1627 | FUNCTION, to list around beginning of that function,\n\ | |
1628 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1629 | ", "\ | |
1630 | Default is to describe the last source line that was listed.\n\n\ | |
1631 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1632 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1633 | The address is also stored as the value of \"$_\".", NULL)); | |
1634 | ||
1635 | add_com ("forward-search", class_files, forward_search_command, | |
1636 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1637 | The matching line number is also stored as the value of \"$_\"."); | |
1638 | add_com_alias ("search", "forward-search", class_files, 0); | |
1639 | ||
1640 | add_com ("reverse-search", class_files, reverse_search_command, | |
1641 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1642 | The matching line number is also stored as the value of \"$_\"."); | |
1643 | ||
1644 | if (xdb_commands) | |
1645 | { | |
c5aa993b JM |
1646 | add_com_alias ("/", "forward-search", class_files, 0); |
1647 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1648 | } |
1649 | ||
cb1a6d5f | 1650 | deprecated_add_show_from_set |
c906108c | 1651 | (add_set_cmd ("listsize", class_support, var_uinteger, |
c5aa993b JM |
1652 | (char *) &lines_to_list, |
1653 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1654 | &setlist), |
1655 | &showlist); | |
1656 | } |