Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
a752853e AC |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
3 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 | |
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 JM |
46 | #ifdef UI_OUT |
47 | #include "ui-out.h" | |
48 | #endif | |
c906108c SS |
49 | |
50 | #ifdef CRLF_SOURCE_FILES | |
51 | ||
52 | /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the | |
53 | host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is | |
54 | much faster than defining LSEEK_NOT_LINEAR. */ | |
55 | ||
56 | #ifndef O_BINARY | |
57 | #define O_BINARY 0 | |
58 | #endif | |
59 | ||
60 | #define OPEN_MODE (O_RDONLY | O_BINARY) | |
61 | #define FDOPEN_MODE FOPEN_RB | |
62 | ||
63 | #else /* ! defined (CRLF_SOURCE_FILES) */ | |
64 | ||
65 | #define OPEN_MODE O_RDONLY | |
66 | #define FDOPEN_MODE FOPEN_RT | |
67 | ||
68 | #endif /* ! defined (CRLF_SOURCE_FILES) */ | |
69 | ||
c906108c SS |
70 | /* Prototypes for exported functions. */ |
71 | ||
a14ed312 | 72 | void _initialize_source (void); |
c906108c SS |
73 | |
74 | /* Prototypes for local functions. */ | |
75 | ||
a14ed312 | 76 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 77 | |
a14ed312 | 78 | static void reverse_search_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void forward_search_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void line_info (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void list_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void ambiguous_line_spec (struct symtabs_and_lines *); |
c906108c | 87 | |
a14ed312 | 88 | static void source_info (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void show_directories (char *, int); |
c906108c SS |
91 | |
92 | /* Path of directories to search for source files. | |
93 | Same format as the PATH environment variable's value. */ | |
94 | ||
95 | char *source_path; | |
96 | ||
97 | /* Symtab of default file for listing lines of. */ | |
98 | ||
99 | struct symtab *current_source_symtab; | |
100 | ||
101 | /* Default next line to list. */ | |
102 | ||
103 | int current_source_line; | |
104 | ||
105 | /* Default number of lines to print with commands like "list". | |
106 | This is based on guessing how many long (i.e. more than chars_per_line | |
107 | characters) lines there will be. To be completely correct, "list" | |
108 | and friends should be rewritten to count characters and see where | |
109 | things are wrapping, but that would be a fair amount of work. */ | |
110 | ||
111 | int lines_to_list = 10; | |
112 | ||
113 | /* Line number of last line printed. Default for various commands. | |
114 | current_source_line is usually, but not always, the same as this. */ | |
115 | ||
116 | static int last_line_listed; | |
117 | ||
118 | /* First line number listed by last listing command. */ | |
119 | ||
120 | static int first_line_listed; | |
121 | ||
122 | /* Saves the name of the last source file visited and a possible error code. | |
123 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
124 | ||
125 | static struct symtab *last_source_visited = NULL; | |
126 | static int last_source_error = 0; | |
c906108c | 127 | \f |
c5aa993b | 128 | |
c906108c SS |
129 | /* Set the source file default for the "list" command to be S. |
130 | ||
131 | If S is NULL, and we don't have a default, find one. This | |
132 | should only be called when the user actually tries to use the | |
133 | default, since we produce an error if we can't find a reasonable | |
134 | default. Also, since this can cause symbols to be read, doing it | |
135 | before we need to would make things slower than necessary. */ | |
136 | ||
137 | void | |
fba45db2 | 138 | select_source_symtab (register struct symtab *s) |
c906108c SS |
139 | { |
140 | struct symtabs_and_lines sals; | |
141 | struct symtab_and_line sal; | |
142 | struct partial_symtab *ps; | |
143 | struct partial_symtab *cs_pst = 0; | |
144 | struct objfile *ofp; | |
c5aa993b | 145 | |
c906108c SS |
146 | if (s) |
147 | { | |
148 | current_source_symtab = s; | |
149 | current_source_line = 1; | |
150 | return; | |
151 | } | |
152 | ||
153 | if (current_source_symtab) | |
154 | return; | |
155 | ||
156 | /* Make the default place to list be the function `main' | |
157 | if one exists. */ | |
51cc5b07 | 158 | if (lookup_symbol (main_name (), 0, VAR_NAMESPACE, 0, NULL)) |
c906108c | 159 | { |
51cc5b07 | 160 | sals = decode_line_spec (main_name (), 1); |
c906108c | 161 | sal = sals.sals[0]; |
b8c9b27d | 162 | xfree (sals.sals); |
c906108c SS |
163 | current_source_symtab = sal.symtab; |
164 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
165 | if (current_source_symtab) | |
c5aa993b | 166 | return; |
c906108c | 167 | } |
c5aa993b | 168 | |
c906108c SS |
169 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
170 | ||
171 | current_source_line = 1; | |
172 | ||
c5aa993b | 173 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 174 | { |
c5aa993b | 175 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 176 | { |
c5aa993b | 177 | char *name = s->filename; |
c906108c | 178 | int len = strlen (name); |
c5aa993b | 179 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
180 | { |
181 | current_source_symtab = s; | |
182 | } | |
183 | } | |
184 | } | |
185 | if (current_source_symtab) | |
186 | return; | |
187 | ||
188 | /* Howabout the partial symbol tables? */ | |
189 | ||
c5aa993b | 190 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 191 | { |
c5aa993b | 192 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 193 | { |
c5aa993b | 194 | char *name = ps->filename; |
c906108c | 195 | int len = strlen (name); |
c5aa993b | 196 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
197 | { |
198 | cs_pst = ps; | |
199 | } | |
200 | } | |
201 | } | |
202 | if (cs_pst) | |
203 | { | |
c5aa993b | 204 | if (cs_pst->readin) |
c906108c | 205 | { |
8e65ff28 AC |
206 | internal_error (__FILE__, __LINE__, |
207 | "select_source_symtab: " | |
208 | "readin pst found and no symtabs."); | |
c906108c SS |
209 | } |
210 | else | |
211 | { | |
212 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
213 | } | |
214 | } | |
215 | if (current_source_symtab) | |
216 | return; | |
217 | ||
218 | error ("Can't find a default source file"); | |
219 | } | |
220 | \f | |
221 | static void | |
fba45db2 | 222 | show_directories (char *ignore, int from_tty) |
c906108c SS |
223 | { |
224 | puts_filtered ("Source directories searched: "); | |
225 | puts_filtered (source_path); | |
226 | puts_filtered ("\n"); | |
227 | } | |
228 | ||
229 | /* Forget what we learned about line positions in source files, and | |
230 | which directories contain them; must check again now since files | |
231 | may be found in a different directory now. */ | |
232 | ||
233 | void | |
fba45db2 | 234 | forget_cached_source_info (void) |
c906108c SS |
235 | { |
236 | register struct symtab *s; | |
237 | register struct objfile *objfile; | |
58d370e0 | 238 | struct partial_symtab *pst; |
c906108c | 239 | |
c5aa993b | 240 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 241 | { |
c5aa993b | 242 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 243 | { |
c5aa993b | 244 | if (s->line_charpos != NULL) |
c906108c | 245 | { |
aac7f4ea | 246 | xmfree (objfile->md, s->line_charpos); |
c5aa993b | 247 | s->line_charpos = NULL; |
c906108c | 248 | } |
c5aa993b | 249 | if (s->fullname != NULL) |
c906108c | 250 | { |
aac7f4ea | 251 | xmfree (objfile->md, s->fullname); |
c5aa993b | 252 | s->fullname = NULL; |
c906108c SS |
253 | } |
254 | } | |
58d370e0 TT |
255 | |
256 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
257 | { | |
258 | if (pst->fullname != NULL) | |
259 | { | |
260 | xfree (pst->fullname); | |
261 | pst->fullname = NULL; | |
262 | } | |
263 | } | |
c906108c SS |
264 | } |
265 | } | |
266 | ||
267 | void | |
fba45db2 | 268 | init_source_path (void) |
c906108c SS |
269 | { |
270 | char buf[20]; | |
271 | ||
272 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 273 | source_path = xstrdup (buf); |
c906108c SS |
274 | forget_cached_source_info (); |
275 | } | |
276 | ||
277 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 278 | |
c906108c | 279 | void |
fba45db2 | 280 | directory_command (char *dirname, int from_tty) |
c906108c SS |
281 | { |
282 | dont_repeat (); | |
283 | /* FIXME, this goes to "delete dir"... */ | |
284 | if (dirname == 0) | |
285 | { | |
43ff13b4 | 286 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c | 287 | { |
b8c9b27d | 288 | xfree (source_path); |
c906108c SS |
289 | init_source_path (); |
290 | } | |
291 | } | |
292 | else | |
293 | { | |
294 | mod_path (dirname, &source_path); | |
295 | last_source_visited = NULL; | |
296 | } | |
297 | if (from_tty) | |
c5aa993b | 298 | show_directories ((char *) 0, from_tty); |
c906108c SS |
299 | forget_cached_source_info (); |
300 | } | |
301 | ||
302 | /* Add zero or more directories to the front of an arbitrary path. */ | |
303 | ||
304 | void | |
fba45db2 | 305 | mod_path (char *dirname, char **which_path) |
c906108c SS |
306 | { |
307 | char *old = *which_path; | |
308 | int prefix = 0; | |
309 | ||
310 | if (dirname == 0) | |
311 | return; | |
312 | ||
4fcf66da | 313 | dirname = xstrdup (dirname); |
b8c9b27d | 314 | make_cleanup (xfree, dirname); |
c906108c SS |
315 | |
316 | do | |
317 | { | |
318 | char *name = dirname; | |
319 | register char *p; | |
320 | struct stat st; | |
321 | ||
322 | { | |
323 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
324 | char *space = strchr (name, ' '); | |
325 | char *tab = strchr (name, '\t'); | |
326 | ||
c5aa993b | 327 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
328 | p = dirname = name + strlen (name); |
329 | else | |
330 | { | |
331 | p = 0; | |
332 | if (separator != 0 && (p == 0 || separator < p)) | |
333 | p = separator; | |
334 | if (space != 0 && (p == 0 || space < p)) | |
335 | p = space; | |
336 | if (tab != 0 && (p == 0 || tab < p)) | |
337 | p = tab; | |
338 | dirname = p + 1; | |
339 | while (*dirname == DIRNAME_SEPARATOR | |
340 | || *dirname == ' ' | |
341 | || *dirname == '\t') | |
342 | ++dirname; | |
343 | } | |
344 | } | |
345 | ||
fe4e3eb8 | 346 | if (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ |
c3690141 | 347 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 348 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
fe4e3eb8 | 349 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 350 | #endif |
fe4e3eb8 | 351 | && IS_DIR_SEPARATOR (p[-1])) |
c906108c SS |
352 | /* Sigh. "foo/" => "foo" */ |
353 | --p; | |
c906108c SS |
354 | *p = '\0'; |
355 | ||
7be570e7 | 356 | while (p > name && p[-1] == '.') |
c906108c SS |
357 | { |
358 | if (p - name == 1) | |
359 | { | |
360 | /* "." => getwd (). */ | |
361 | name = current_directory; | |
362 | goto append; | |
363 | } | |
fe4e3eb8 | 364 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
365 | { |
366 | if (p - name == 2) | |
367 | { | |
368 | /* "/." => "/". */ | |
369 | *--p = '\0'; | |
370 | goto append; | |
371 | } | |
372 | else | |
373 | { | |
374 | /* "...foo/." => "...foo". */ | |
375 | p -= 2; | |
376 | *p = '\0'; | |
377 | continue; | |
378 | } | |
379 | } | |
380 | else | |
381 | break; | |
382 | } | |
383 | ||
384 | if (name[0] == '~') | |
385 | name = tilde_expand (name); | |
c3690141 | 386 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 387 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
7be570e7 JM |
388 | name = concat (name, ".", NULL); |
389 | #endif | |
fe4e3eb8 | 390 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
c5aa993b | 391 | name = concat (current_directory, SLASH_STRING, name, NULL); |
c906108c SS |
392 | else |
393 | name = savestring (name, p - name); | |
b8c9b27d | 394 | make_cleanup (xfree, name); |
c906108c SS |
395 | |
396 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
397 | if (name[0] != '$') |
398 | { | |
399 | /* These are warnings, not errors, since we don't want a | |
400 | non-existent directory in a .gdbinit file to stop processing | |
401 | of the .gdbinit file. | |
402 | ||
403 | Whether they get added to the path is more debatable. Current | |
404 | answer is yes, in case the user wants to go make the directory | |
405 | or whatever. If the directory continues to not exist/not be | |
406 | a directory/etc, then having them in the path should be | |
407 | harmless. */ | |
408 | if (stat (name, &st) < 0) | |
409 | { | |
410 | int save_errno = errno; | |
411 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
412 | print_sys_errmsg (name, save_errno); | |
413 | } | |
414 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
415 | warning ("%s is not a directory.", name); | |
416 | } | |
c906108c SS |
417 | |
418 | append: | |
419 | { | |
420 | register unsigned int len = strlen (name); | |
421 | ||
422 | p = *which_path; | |
423 | while (1) | |
424 | { | |
7be570e7 JM |
425 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
426 | MS-Windows because of case-insensitivity and two different | |
427 | but functionally identical slash characters. We need a | |
428 | special filesystem-dependent file-name comparison function. | |
429 | ||
430 | Actually, even on Unix I would use realpath() or its work- | |
431 | alike before comparing. Then all the code above which | |
432 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
433 | if (!strncmp (p, name, len) |
434 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
435 | { | |
436 | /* Found it in the search path, remove old copy */ | |
437 | if (p > *which_path) | |
c5aa993b | 438 | p--; /* Back over leading separator */ |
c906108c SS |
439 | if (prefix > p - *which_path) |
440 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 441 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
442 | } |
443 | p = strchr (p, DIRNAME_SEPARATOR); | |
444 | if (p != 0) | |
445 | ++p; | |
446 | else | |
447 | break; | |
448 | } | |
449 | if (p == 0) | |
450 | { | |
451 | char tinybuf[2]; | |
452 | ||
453 | tinybuf[0] = DIRNAME_SEPARATOR; | |
454 | tinybuf[1] = '\0'; | |
455 | ||
c5aa993b | 456 | /* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */ |
c906108c SS |
457 | if (prefix) |
458 | { | |
459 | char *temp, c; | |
460 | ||
461 | c = old[prefix]; | |
462 | old[prefix] = '\0'; | |
463 | temp = concat (old, tinybuf, name, NULL); | |
464 | old[prefix] = c; | |
465 | *which_path = concat (temp, "", &old[prefix], NULL); | |
466 | prefix = strlen (temp); | |
b8c9b27d | 467 | xfree (temp); |
c906108c SS |
468 | } |
469 | else | |
470 | { | |
471 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
472 | prefix = strlen (name); | |
473 | } | |
b8c9b27d | 474 | xfree (old); |
c906108c SS |
475 | old = *which_path; |
476 | } | |
477 | } | |
c5aa993b JM |
478 | skip_dup:; |
479 | } | |
480 | while (*dirname != '\0'); | |
c906108c SS |
481 | } |
482 | ||
483 | ||
484 | static void | |
fba45db2 | 485 | source_info (char *ignore, int from_tty) |
c906108c SS |
486 | { |
487 | register struct symtab *s = current_source_symtab; | |
488 | ||
489 | if (!s) | |
490 | { | |
c5aa993b | 491 | printf_filtered ("No current source file.\n"); |
c906108c SS |
492 | return; |
493 | } | |
494 | printf_filtered ("Current source file is %s\n", s->filename); | |
495 | if (s->dirname) | |
496 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
497 | if (s->fullname) | |
498 | printf_filtered ("Located in %s\n", s->fullname); | |
499 | if (s->nlines) | |
500 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
501 | s->nlines == 1 ? "" : "s"); | |
502 | ||
503 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
504 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
505 | } | |
c5aa993b | 506 | \f |
c906108c SS |
507 | |
508 | ||
c906108c SS |
509 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
510 | using mode MODE and protection bits PROT in the calls to open. | |
511 | ||
512 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
513 | (ie pretend the first element of PATH is "."). This also indicates | |
514 | that a slash in STRING disables searching of the path (this is | |
515 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
516 | get that particular version of foo or an error message). | |
517 | ||
e7a8479f | 518 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
c906108c SS |
519 | the actual file opened (this string will always start with a "/". We |
520 | have to take special pains to avoid doubling the "/" between the directory | |
521 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
522 | source file name!!! | |
523 | ||
524 | If a file is found, return the descriptor. | |
525 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
526 | ||
527 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 528 | >>>> eg executable, non-directory */ |
c906108c | 529 | int |
1f8cc6db AC |
530 | openp (const char *path, int try_cwd_first, const char *string, |
531 | int mode, int prot, | |
fba45db2 | 532 | char **filename_opened) |
c906108c SS |
533 | { |
534 | register int fd; | |
535 | register char *filename; | |
1f8cc6db AC |
536 | const char *p; |
537 | const char *p1; | |
c906108c SS |
538 | register int len; |
539 | int alloclen; | |
540 | ||
541 | if (!path) | |
542 | path = "."; | |
543 | ||
608506ed | 544 | #if defined(_WIN32) || defined(__CYGWIN__) |
c906108c SS |
545 | mode |= O_BINARY; |
546 | #endif | |
547 | ||
fe4e3eb8 | 548 | if (try_cwd_first || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
549 | { |
550 | int i; | |
1f8cc6db AC |
551 | filename = alloca (strlen (string) + 1); |
552 | strcpy (filename, string); | |
c906108c SS |
553 | fd = open (filename, mode, prot); |
554 | if (fd >= 0) | |
555 | goto done; | |
556 | for (i = 0; string[i]; i++) | |
fe4e3eb8 | 557 | if (IS_DIR_SEPARATOR (string[i])) |
c906108c SS |
558 | goto done; |
559 | } | |
560 | ||
561 | /* ./foo => foo */ | |
fe4e3eb8 | 562 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
563 | string += 2; |
564 | ||
565 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 566 | filename = alloca (alloclen); |
c906108c SS |
567 | fd = -1; |
568 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
569 | { | |
1f8cc6db | 570 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
571 | if (p1) |
572 | len = p1 - p; | |
573 | else | |
574 | len = strlen (p); | |
575 | ||
576 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
577 | && p[2] == 'w' && p[3] == 'd') |
578 | { | |
579 | /* Name is $cwd -- insert current directory name instead. */ | |
580 | int newlen; | |
581 | ||
582 | /* First, realloc the filename buffer if too short. */ | |
583 | len = strlen (current_directory); | |
584 | newlen = len + strlen (string) + 2; | |
585 | if (newlen > alloclen) | |
586 | { | |
587 | alloclen = newlen; | |
1f8cc6db | 588 | filename = alloca (alloclen); |
c5aa993b JM |
589 | } |
590 | strcpy (filename, current_directory); | |
591 | } | |
592 | else | |
593 | { | |
594 | /* Normal file name in path -- just use it. */ | |
595 | strncpy (filename, p, len); | |
596 | filename[len] = 0; | |
c906108c | 597 | } |
c906108c SS |
598 | |
599 | /* Remove trailing slashes */ | |
fe4e3eb8 | 600 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
601 | filename[--len] = 0; |
602 | ||
c5aa993b | 603 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
604 | strcat (filename, string); |
605 | ||
606 | fd = open (filename, mode); | |
c5aa993b JM |
607 | if (fd >= 0) |
608 | break; | |
c906108c SS |
609 | } |
610 | ||
c5aa993b | 611 | done: |
c906108c SS |
612 | if (filename_opened) |
613 | { | |
614 | if (fd < 0) | |
1f8cc6db | 615 | *filename_opened = NULL; |
fe4e3eb8 | 616 | else if (IS_ABSOLUTE_PATH (filename)) |
58d370e0 | 617 | *filename_opened = gdb_realpath (filename); |
c906108c SS |
618 | else |
619 | { | |
620 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b | 621 | |
58d370e0 | 622 | char *f = concat (current_directory, |
fe4e3eb8 | 623 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
c5aa993b | 624 | ? "" : SLASH_STRING, |
c906108c | 625 | filename, NULL); |
58d370e0 TT |
626 | *filename_opened = gdb_realpath (f); |
627 | xfree (f); | |
c5aa993b | 628 | } |
c906108c | 629 | } |
c906108c SS |
630 | |
631 | return fd; | |
632 | } | |
633 | ||
c5aa993b | 634 | |
c906108c SS |
635 | /* This is essentially a convenience, for clients that want the behaviour |
636 | of openp, using source_path, but that really don't want the file to be | |
637 | opened but want instead just to know what the full pathname is (as | |
638 | qualified against source_path). | |
639 | ||
640 | The current working directory is searched first. | |
641 | ||
642 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
643 | set to the fully-qualified pathname. | |
644 | ||
645 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 646 | */ |
c906108c | 647 | int |
fba45db2 | 648 | source_full_path_of (char *filename, char **full_pathname) |
c906108c | 649 | { |
c5aa993b | 650 | int fd; |
c906108c SS |
651 | |
652 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
653 | if (fd < 0) | |
654 | { | |
655 | *full_pathname = NULL; | |
656 | return 0; | |
657 | } | |
658 | ||
659 | close (fd); | |
660 | return 1; | |
661 | } | |
662 | ||
663 | ||
664 | /* Open a source file given a symtab S. Returns a file descriptor or | |
665 | negative number for error. */ | |
666 | ||
667 | int | |
fba45db2 | 668 | open_source_file (struct symtab *s) |
c906108c SS |
669 | { |
670 | char *path = source_path; | |
31889e00 | 671 | const char *p; |
c906108c SS |
672 | int result; |
673 | char *fullname; | |
674 | ||
675 | /* Quick way out if we already know its full name */ | |
c5aa993b | 676 | if (s->fullname) |
c906108c SS |
677 | { |
678 | result = open (s->fullname, OPEN_MODE); | |
679 | if (result >= 0) | |
c5aa993b | 680 | return result; |
c906108c | 681 | /* Didn't work -- free old one, try again. */ |
aac7f4ea | 682 | xmfree (s->objfile->md, s->fullname); |
c906108c SS |
683 | s->fullname = NULL; |
684 | } | |
685 | ||
686 | if (s->dirname != NULL) | |
687 | { | |
688 | /* Replace a path entry of $cdir with the compilation directory name */ | |
689 | #define cdir_len 5 | |
690 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
691 | which produces a "required warning" when assigned to a nonconst. */ |
692 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 693 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 694 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
695 | { |
696 | int len; | |
697 | ||
698 | path = (char *) | |
699 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
700 | len = p - source_path; | |
c5aa993b JM |
701 | strncpy (path, source_path, len); /* Before $cdir */ |
702 | strcpy (path + len, s->dirname); /* new stuff */ | |
703 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
704 | } |
705 | } | |
706 | ||
707 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
708 | if (result < 0) | |
709 | { | |
710 | /* Didn't work. Try using just the basename. */ | |
31889e00 | 711 | p = lbasename (s->filename); |
c906108c SS |
712 | if (p != s->filename) |
713 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
714 | } | |
c906108c SS |
715 | |
716 | if (result >= 0) | |
717 | { | |
718 | fullname = s->fullname; | |
719 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
b8c9b27d | 720 | xfree (fullname); |
c906108c SS |
721 | } |
722 | return result; | |
723 | } | |
724 | ||
725 | /* Return the path to the source file associated with symtab. Returns NULL | |
726 | if no symtab. */ | |
727 | ||
728 | char * | |
fba45db2 | 729 | symtab_to_filename (struct symtab *s) |
c906108c SS |
730 | { |
731 | int fd; | |
732 | ||
733 | if (!s) | |
734 | return NULL; | |
735 | ||
736 | /* If we've seen the file before, just return fullname. */ | |
737 | ||
738 | if (s->fullname) | |
739 | return s->fullname; | |
740 | ||
741 | /* Try opening the file to setup fullname */ | |
742 | ||
743 | fd = open_source_file (s); | |
744 | if (fd < 0) | |
745 | return s->filename; /* File not found. Just use short name */ | |
746 | ||
747 | /* Found the file. Cleanup and return the full name */ | |
748 | ||
749 | close (fd); | |
750 | return s->fullname; | |
751 | } | |
c906108c | 752 | \f |
c5aa993b | 753 | |
c906108c SS |
754 | /* Create and initialize the table S->line_charpos that records |
755 | the positions of the lines in the source file, which is assumed | |
756 | to be open on descriptor DESC. | |
757 | All set S->nlines to the number of such lines. */ | |
758 | ||
759 | void | |
fba45db2 | 760 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
761 | { |
762 | struct stat st; | |
763 | register char *data, *p, *end; | |
764 | int nlines = 0; | |
765 | int lines_allocated = 1000; | |
766 | int *line_charpos; | |
767 | long mtime = 0; | |
768 | int size; | |
769 | ||
c5aa993b | 770 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
771 | lines_allocated * sizeof (int)); |
772 | if (fstat (desc, &st) < 0) | |
773 | perror_with_name (s->filename); | |
774 | ||
775 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 776 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 777 | else if (exec_bfd) |
c5aa993b | 778 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
779 | |
780 | if (mtime && mtime < st.st_mtime) | |
781 | { | |
c5aa993b | 782 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
783 | } |
784 | ||
785 | #ifdef LSEEK_NOT_LINEAR | |
786 | { | |
787 | char c; | |
788 | ||
789 | /* Have to read it byte by byte to find out where the chars live */ | |
790 | ||
791 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
792 | nlines = 1; | |
c5aa993b | 793 | while (myread (desc, &c, 1) > 0) |
c906108c | 794 | { |
c5aa993b | 795 | if (c == '\n') |
c906108c | 796 | { |
c5aa993b | 797 | if (nlines == lines_allocated) |
c906108c SS |
798 | { |
799 | lines_allocated *= 2; | |
800 | line_charpos = | |
c5aa993b | 801 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
802 | sizeof (int) * lines_allocated); |
803 | } | |
804 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
805 | } | |
806 | } | |
807 | } | |
808 | #else /* lseek linear. */ | |
809 | { | |
810 | struct cleanup *old_cleanups; | |
811 | ||
812 | /* st_size might be a large type, but we only support source files whose | |
813 | size fits in an int. */ | |
814 | size = (int) st.st_size; | |
815 | ||
816 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
817 | run into various kinds of limits on stack size. */ | |
818 | data = (char *) xmalloc (size); | |
b8c9b27d | 819 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
820 | |
821 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
822 | size = myread (desc, data, size); | |
823 | if (size < 0) | |
824 | perror_with_name (s->filename); | |
825 | end = data + size; | |
826 | p = data; | |
827 | line_charpos[0] = 0; | |
828 | nlines = 1; | |
829 | while (p != end) | |
830 | { | |
831 | if (*p++ == '\n' | |
c5aa993b | 832 | /* A newline at the end does not start a new line. */ |
c906108c SS |
833 | && p != end) |
834 | { | |
835 | if (nlines == lines_allocated) | |
836 | { | |
837 | lines_allocated *= 2; | |
838 | line_charpos = | |
c5aa993b | 839 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
840 | sizeof (int) * lines_allocated); |
841 | } | |
842 | line_charpos[nlines++] = p - data; | |
843 | } | |
844 | } | |
845 | do_cleanups (old_cleanups); | |
846 | } | |
847 | #endif /* lseek linear. */ | |
848 | s->nlines = nlines; | |
849 | s->line_charpos = | |
c5aa993b JM |
850 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
851 | nlines * sizeof (int)); | |
c906108c SS |
852 | |
853 | } | |
854 | ||
855 | /* Return the character position of a line LINE in symtab S. | |
856 | Return 0 if anything is invalid. */ | |
857 | ||
c5aa993b | 858 | #if 0 /* Currently unused */ |
c906108c SS |
859 | |
860 | int | |
fba45db2 | 861 | source_line_charpos (struct symtab *s, int line) |
c906108c | 862 | { |
c5aa993b JM |
863 | if (!s) |
864 | return 0; | |
865 | if (!s->line_charpos || line <= 0) | |
866 | return 0; | |
c906108c SS |
867 | if (line > s->nlines) |
868 | line = s->nlines; | |
869 | return s->line_charpos[line - 1]; | |
870 | } | |
871 | ||
872 | /* Return the line number of character position POS in symtab S. */ | |
873 | ||
874 | int | |
fba45db2 | 875 | source_charpos_line (register struct symtab *s, register int chr) |
c906108c SS |
876 | { |
877 | register int line = 0; | |
878 | register int *lnp; | |
c5aa993b JM |
879 | |
880 | if (s == 0 || s->line_charpos == 0) | |
881 | return 0; | |
c906108c SS |
882 | lnp = s->line_charpos; |
883 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 884 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
885 | { |
886 | line++; | |
887 | lnp++; | |
888 | } | |
889 | if (line >= s->nlines) | |
890 | line = s->nlines; | |
891 | return line; | |
892 | } | |
893 | ||
c5aa993b | 894 | #endif /* 0 */ |
c906108c | 895 | \f |
c5aa993b | 896 | |
c906108c SS |
897 | /* Get full pathname and line number positions for a symtab. |
898 | Return nonzero if line numbers may have changed. | |
899 | Set *FULLNAME to actual name of the file as found by `openp', | |
900 | or to 0 if the file is not found. */ | |
901 | ||
902 | static int | |
fba45db2 | 903 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c SS |
904 | { |
905 | register int desc, linenums_changed = 0; | |
c5aa993b | 906 | |
c906108c SS |
907 | desc = open_source_file (s); |
908 | if (desc < 0) | |
909 | { | |
910 | if (fullname) | |
911 | *fullname = NULL; | |
912 | return 0; | |
c5aa993b | 913 | } |
c906108c SS |
914 | if (fullname) |
915 | *fullname = s->fullname; | |
c5aa993b JM |
916 | if (s->line_charpos == 0) |
917 | linenums_changed = 1; | |
918 | if (linenums_changed) | |
919 | find_source_lines (s, desc); | |
c906108c SS |
920 | close (desc); |
921 | return linenums_changed; | |
922 | } | |
923 | ||
924 | /* Print text describing the full name of the source file S | |
925 | and the line number LINE and its corresponding character position. | |
926 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
927 | can easily find it. | |
928 | ||
929 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
930 | ||
931 | Return 1 if successful, 0 if could not find the file. */ | |
932 | ||
933 | int | |
fba45db2 KB |
934 | identify_source_line (struct symtab *s, int line, int mid_statement, |
935 | CORE_ADDR pc) | |
c906108c SS |
936 | { |
937 | if (s->line_charpos == 0) | |
c5aa993b | 938 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
939 | if (s->fullname == 0) |
940 | return 0; | |
941 | if (line > s->nlines) | |
942 | /* Don't index off the end of the line_charpos array. */ | |
943 | return 0; | |
944 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
945 | mid_statement, pc); | |
946 | ||
947 | current_source_line = line; | |
948 | first_line_listed = line; | |
949 | last_line_listed = line; | |
950 | current_source_symtab = s; | |
951 | return 1; | |
952 | } | |
c906108c | 953 | \f |
c5aa993b | 954 | |
c906108c SS |
955 | /* Print source lines from the file of symtab S, |
956 | starting with line number LINE and stopping before line number STOPLINE. */ | |
957 | ||
a14ed312 KB |
958 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
959 | int noerror); | |
c906108c | 960 | static void |
fba45db2 | 961 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
962 | { |
963 | register int c; | |
964 | register int desc; | |
965 | register FILE *stream; | |
966 | int nlines = stopline - line; | |
967 | ||
968 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
969 | current_source_symtab = s; | |
970 | current_source_line = line; | |
971 | first_line_listed = line; | |
972 | ||
8b93c638 JM |
973 | #ifdef UI_OUT |
974 | /* If printing of source lines is disabled, just print file and line number */ | |
975 | if (ui_out_test_flags (uiout, ui_source_list)) | |
976 | { | |
977 | #endif | |
c5aa993b JM |
978 | /* Only prints "No such file or directory" once */ |
979 | if ((s != last_source_visited) || (!last_source_error)) | |
980 | { | |
981 | last_source_visited = s; | |
982 | desc = open_source_file (s); | |
983 | } | |
984 | else | |
985 | { | |
986 | desc = last_source_error; | |
987 | noerror = 1; | |
988 | } | |
8b93c638 JM |
989 | #ifdef UI_OUT |
990 | } | |
991 | else | |
992 | { | |
993 | desc = -1; | |
994 | noerror = 1; | |
995 | } | |
996 | #endif | |
c906108c SS |
997 | |
998 | if (desc < 0) | |
999 | { | |
1000 | last_source_error = desc; | |
1001 | ||
c5aa993b JM |
1002 | if (!noerror) |
1003 | { | |
c906108c SS |
1004 | char *name = alloca (strlen (s->filename) + 100); |
1005 | sprintf (name, "%d\t%s", line, s->filename); | |
1006 | print_sys_errmsg (name, errno); | |
1007 | } | |
1008 | else | |
8b93c638 JM |
1009 | #ifdef UI_OUT |
1010 | ui_out_field_int (uiout, "line", line); | |
1011 | ui_out_text (uiout, "\tin "); | |
1012 | ui_out_field_string (uiout, "file", s->filename); | |
1013 | ui_out_text (uiout, "\n"); | |
1014 | #else | |
c906108c | 1015 | printf_filtered ("%d\tin %s\n", line, s->filename); |
8b93c638 | 1016 | #endif |
c906108c SS |
1017 | |
1018 | return; | |
1019 | } | |
1020 | ||
1021 | last_source_error = 0; | |
1022 | ||
1023 | if (s->line_charpos == 0) | |
1024 | find_source_lines (s, desc); | |
1025 | ||
1026 | if (line < 1 || line > s->nlines) | |
1027 | { | |
1028 | close (desc); | |
1029 | error ("Line number %d out of range; %s has %d lines.", | |
1030 | line, s->filename, s->nlines); | |
1031 | } | |
1032 | ||
1033 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1034 | { | |
1035 | close (desc); | |
1036 | perror_with_name (s->filename); | |
1037 | } | |
1038 | ||
1039 | stream = fdopen (desc, FDOPEN_MODE); | |
1040 | clearerr (stream); | |
1041 | ||
1042 | while (nlines-- > 0) | |
1043 | { | |
8b93c638 JM |
1044 | #ifdef UI_OUT |
1045 | char buf[20]; | |
1046 | ||
1047 | c = fgetc (stream); | |
1048 | if (c == EOF) | |
1049 | break; | |
1050 | last_line_listed = current_source_line; | |
1051 | sprintf (buf, "%d\t", current_source_line++); | |
1052 | ui_out_text (uiout, buf); | |
1053 | do | |
1054 | { | |
1055 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1056 | { | |
1057 | sprintf (buf, "^%c", c + 0100); | |
1058 | ui_out_text (uiout, buf); | |
1059 | } | |
1060 | else if (c == 0177) | |
1061 | ui_out_text (uiout, "^?"); | |
1062 | #ifdef CRLF_SOURCE_FILES | |
1063 | else if (c == '\r') | |
1064 | { | |
1065 | /* Skip a \r character, but only before a \n. */ | |
1066 | int c1 = fgetc (stream); | |
1067 | ||
1068 | if (c1 != '\n') | |
1069 | printf_filtered ("^%c", c + 0100); | |
1070 | if (c1 != EOF) | |
1071 | ungetc (c1, stream); | |
1072 | } | |
1073 | #endif | |
1074 | else | |
1075 | { | |
1076 | sprintf (buf, "%c", c); | |
1077 | ui_out_text (uiout, buf); | |
1078 | } | |
1079 | } | |
1080 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
1081 | #else | |
c906108c | 1082 | c = fgetc (stream); |
c5aa993b JM |
1083 | if (c == EOF) |
1084 | break; | |
c906108c SS |
1085 | last_line_listed = current_source_line; |
1086 | printf_filtered ("%d\t", current_source_line++); | |
1087 | do | |
1088 | { | |
1089 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1090 | printf_filtered ("^%c", c + 0100); | |
1091 | else if (c == 0177) | |
1092 | printf_filtered ("^?"); | |
1093 | #ifdef CRLF_SOURCE_FILES | |
1094 | else if (c == '\r') | |
1095 | { | |
1096 | /* Just skip \r characters. */ | |
1097 | } | |
1098 | #endif | |
1099 | else | |
1100 | printf_filtered ("%c", c); | |
c5aa993b JM |
1101 | } |
1102 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
8b93c638 | 1103 | #endif |
c906108c SS |
1104 | } |
1105 | ||
1106 | fclose (stream); | |
1107 | } | |
1108 | \f | |
1109 | /* Show source lines from the file of symtab S, starting with line | |
1110 | number LINE and stopping before line number STOPLINE. If this is the | |
1111 | not the command line version, then the source is shown in the source | |
1112 | window otherwise it is simply printed */ | |
1113 | ||
c5aa993b | 1114 | void |
fba45db2 | 1115 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1116 | { |
c5aa993b | 1117 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1118 | } |
1119 | \f | |
1120 | ||
1121 | ||
1122 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1123 | in order to list a function which was specified ambiguously (as with |
1124 | `list classname::overloadedfuncname', for example). The vector in | |
1125 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1126 | |
1127 | static void | |
fba45db2 | 1128 | ambiguous_line_spec (struct symtabs_and_lines *sals) |
c906108c SS |
1129 | { |
1130 | int i; | |
1131 | ||
1132 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1133 | printf_filtered ("file: \"%s\", line number: %d\n", |
1134 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1135 | } |
1136 | ||
1137 | static void | |
fba45db2 | 1138 | list_command (char *arg, int from_tty) |
c906108c SS |
1139 | { |
1140 | struct symtabs_and_lines sals, sals_end; | |
1141 | struct symtab_and_line sal, sal_end; | |
1142 | struct symbol *sym; | |
1143 | char *arg1; | |
1144 | int no_end = 1; | |
1145 | int dummy_end = 0; | |
1146 | int dummy_beg = 0; | |
1147 | int linenum_beg = 0; | |
1148 | char *p; | |
1149 | ||
c5aa993b | 1150 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1151 | error ("No symbol table is loaded. Use the \"file\" command."); |
1152 | ||
1153 | /* Pull in a current source symtab if necessary */ | |
1154 | if (current_source_symtab == 0 && | |
1155 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1156 | select_source_symtab (0); | |
1157 | ||
1158 | /* "l" or "l +" lists next ten lines. */ | |
1159 | ||
1160 | if (arg == 0 || STREQ (arg, "+")) | |
1161 | { | |
1162 | if (current_source_symtab == 0) | |
1163 | error ("No default source file yet. Do \"help list\"."); | |
1164 | print_source_lines (current_source_symtab, current_source_line, | |
1165 | current_source_line + lines_to_list, 0); | |
1166 | return; | |
1167 | } | |
1168 | ||
1169 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1170 | if (STREQ (arg, "-")) | |
1171 | { | |
1172 | if (current_source_symtab == 0) | |
1173 | error ("No default source file yet. Do \"help list\"."); | |
1174 | print_source_lines (current_source_symtab, | |
1175 | max (first_line_listed - lines_to_list, 1), | |
1176 | first_line_listed, 0); | |
1177 | return; | |
1178 | } | |
1179 | ||
1180 | /* Now if there is only one argument, decode it in SAL | |
1181 | and set NO_END. | |
1182 | If there are two arguments, decode them in SAL and SAL_END | |
1183 | and clear NO_END; however, if one of the arguments is blank, | |
1184 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1185 | ||
1186 | arg1 = arg; | |
1187 | if (*arg1 == ',') | |
1188 | dummy_beg = 1; | |
1189 | else | |
1190 | { | |
1191 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1192 | ||
c5aa993b JM |
1193 | if (!sals.nelts) |
1194 | return; /* C++ */ | |
c906108c SS |
1195 | if (sals.nelts > 1) |
1196 | { | |
1197 | ambiguous_line_spec (&sals); | |
b8c9b27d | 1198 | xfree (sals.sals); |
c906108c SS |
1199 | return; |
1200 | } | |
1201 | ||
1202 | sal = sals.sals[0]; | |
b8c9b27d | 1203 | xfree (sals.sals); |
c906108c SS |
1204 | } |
1205 | ||
1206 | /* Record whether the BEG arg is all digits. */ | |
1207 | ||
1208 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1209 | linenum_beg = (p == arg1); | |
1210 | ||
1211 | while (*arg1 == ' ' || *arg1 == '\t') | |
1212 | arg1++; | |
1213 | if (*arg1 == ',') | |
1214 | { | |
1215 | no_end = 0; | |
1216 | arg1++; | |
1217 | while (*arg1 == ' ' || *arg1 == '\t') | |
1218 | arg1++; | |
1219 | if (*arg1 == 0) | |
1220 | dummy_end = 1; | |
1221 | else | |
1222 | { | |
1223 | if (dummy_beg) | |
1224 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1225 | else | |
1226 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1227 | if (sals_end.nelts == 0) |
c906108c SS |
1228 | return; |
1229 | if (sals_end.nelts > 1) | |
1230 | { | |
1231 | ambiguous_line_spec (&sals_end); | |
b8c9b27d | 1232 | xfree (sals_end.sals); |
c906108c SS |
1233 | return; |
1234 | } | |
1235 | sal_end = sals_end.sals[0]; | |
b8c9b27d | 1236 | xfree (sals_end.sals); |
c906108c SS |
1237 | } |
1238 | } | |
1239 | ||
1240 | if (*arg1) | |
1241 | error ("Junk at end of line specification."); | |
1242 | ||
1243 | if (!no_end && !dummy_beg && !dummy_end | |
1244 | && sal.symtab != sal_end.symtab) | |
1245 | error ("Specified start and end are in different files."); | |
1246 | if (dummy_beg && dummy_end) | |
1247 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1248 | |
c906108c SS |
1249 | /* if line was specified by address, |
1250 | first print exactly which line, and which file. | |
1251 | In this case, sal.symtab == 0 means address is outside | |
1252 | of all known source files, not that user failed to give a filename. */ | |
1253 | if (*arg == '*') | |
1254 | { | |
1255 | if (sal.symtab == 0) | |
1256 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1257 | error ("No source file for address %s.", | |
c5aa993b | 1258 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1259 | sym = find_pc_function (sal.pc); |
1260 | if (sym) | |
1261 | { | |
1262 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1263 | printf_filtered (" is in "); | |
1264 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1265 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1270 | printf_filtered (" is at %s:%d.\n", | |
1271 | sal.symtab->filename, sal.line); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | /* If line was not specified by just a line number, | |
1276 | and it does not imply a symtab, it must be an undebuggable symbol | |
1277 | which means no source code. */ | |
1278 | ||
c5aa993b | 1279 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1280 | error ("No line number known for %s.", arg); |
1281 | ||
1282 | /* If this command is repeated with RET, | |
1283 | turn it into the no-arg variant. */ | |
1284 | ||
1285 | if (from_tty) | |
1286 | *arg = 0; | |
1287 | ||
1288 | if (dummy_beg && sal_end.symtab == 0) | |
1289 | error ("No default source file yet. Do \"help list\"."); | |
1290 | if (dummy_beg) | |
1291 | print_source_lines (sal_end.symtab, | |
1292 | max (sal_end.line - (lines_to_list - 1), 1), | |
1293 | sal_end.line + 1, 0); | |
1294 | else if (sal.symtab == 0) | |
1295 | error ("No default source file yet. Do \"help list\"."); | |
1296 | else if (no_end) | |
7a292a7a | 1297 | { |
d4f3574e SS |
1298 | int first_line = sal.line - lines_to_list / 2; |
1299 | ||
1300 | if (first_line < 1) first_line = 1; | |
1301 | ||
1302 | print_source_lines (sal.symtab, first_line, first_line + lines_to_list, | |
1303 | 0); | |
7a292a7a | 1304 | } |
c906108c SS |
1305 | else |
1306 | print_source_lines (sal.symtab, sal.line, | |
1307 | (dummy_end | |
1308 | ? sal.line + lines_to_list | |
1309 | : sal_end.line + 1), | |
1310 | 0); | |
1311 | } | |
1312 | \f | |
1313 | /* Print info on range of pc's in a specified line. */ | |
1314 | ||
1315 | static void | |
fba45db2 | 1316 | line_info (char *arg, int from_tty) |
c906108c SS |
1317 | { |
1318 | struct symtabs_and_lines sals; | |
1319 | struct symtab_and_line sal; | |
1320 | CORE_ADDR start_pc, end_pc; | |
1321 | int i; | |
1322 | ||
c5aa993b | 1323 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1324 | |
1325 | if (arg == 0) | |
1326 | { | |
1327 | sal.symtab = current_source_symtab; | |
1328 | sal.line = last_line_listed; | |
1329 | sals.nelts = 1; | |
1330 | sals.sals = (struct symtab_and_line *) | |
1331 | xmalloc (sizeof (struct symtab_and_line)); | |
1332 | sals.sals[0] = sal; | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1337 | |
c906108c SS |
1338 | dont_repeat (); |
1339 | } | |
1340 | ||
1341 | /* C++ More than one line may have been specified, as when the user | |
1342 | specifies an overloaded function name. Print info on them all. */ | |
1343 | for (i = 0; i < sals.nelts; i++) | |
1344 | { | |
1345 | sal = sals.sals[i]; | |
c5aa993b | 1346 | |
c906108c SS |
1347 | if (sal.symtab == 0) |
1348 | { | |
1349 | printf_filtered ("No line number information available"); | |
1350 | if (sal.pc != 0) | |
1351 | { | |
1352 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1353 | user about a source line, at least let them have the symbolic |
1354 | address. */ | |
c906108c SS |
1355 | printf_filtered (" for address "); |
1356 | wrap_here (" "); | |
1357 | print_address (sal.pc, gdb_stdout); | |
1358 | } | |
1359 | else | |
1360 | printf_filtered ("."); | |
1361 | printf_filtered ("\n"); | |
1362 | } | |
1363 | else if (sal.line > 0 | |
1364 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1365 | { | |
1366 | if (start_pc == end_pc) | |
1367 | { | |
1368 | printf_filtered ("Line %d of \"%s\"", | |
1369 | sal.line, sal.symtab->filename); | |
1370 | wrap_here (" "); | |
1371 | printf_filtered (" is at address "); | |
1372 | print_address (start_pc, gdb_stdout); | |
1373 | wrap_here (" "); | |
1374 | printf_filtered (" but contains no code.\n"); | |
1375 | } | |
1376 | else | |
1377 | { | |
1378 | printf_filtered ("Line %d of \"%s\"", | |
1379 | sal.line, sal.symtab->filename); | |
1380 | wrap_here (" "); | |
1381 | printf_filtered (" starts at address "); | |
1382 | print_address (start_pc, gdb_stdout); | |
1383 | wrap_here (" "); | |
1384 | printf_filtered (" and ends at "); | |
1385 | print_address (end_pc, gdb_stdout); | |
1386 | printf_filtered (".\n"); | |
1387 | } | |
1388 | ||
1389 | /* x/i should display this line's code. */ | |
1390 | set_next_address (start_pc); | |
1391 | ||
1392 | /* Repeating "info line" should do the following line. */ | |
1393 | last_line_listed = sal.line + 1; | |
1394 | ||
1395 | /* If this is the only line, show the source code. If it could | |
1396 | not find the file, don't do anything special. */ | |
1397 | if (annotation_level && sals.nelts == 1) | |
1398 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1399 | } | |
1400 | else | |
1401 | /* Is there any case in which we get here, and have an address | |
1402 | which the user would want to see? If we have debugging symbols | |
1403 | and no line numbers? */ | |
1404 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1405 | sal.line, sal.symtab->filename); | |
1406 | } | |
b8c9b27d | 1407 | xfree (sals.sals); |
c906108c SS |
1408 | } |
1409 | \f | |
1410 | /* Commands to search the source file for a regexp. */ | |
1411 | ||
1412 | /* ARGSUSED */ | |
1413 | static void | |
fba45db2 | 1414 | forward_search_command (char *regex, int from_tty) |
c906108c SS |
1415 | { |
1416 | register int c; | |
1417 | register int desc; | |
1418 | register FILE *stream; | |
1419 | int line; | |
1420 | char *msg; | |
1421 | ||
c906108c | 1422 | line = last_line_listed + 1; |
c906108c SS |
1423 | |
1424 | msg = (char *) re_comp (regex); | |
1425 | if (msg) | |
1426 | error (msg); | |
1427 | ||
1428 | if (current_source_symtab == 0) | |
1429 | select_source_symtab (0); | |
1430 | ||
1431 | desc = open_source_file (current_source_symtab); | |
1432 | if (desc < 0) | |
1433 | perror_with_name (current_source_symtab->filename); | |
1434 | ||
1435 | if (current_source_symtab->line_charpos == 0) | |
1436 | find_source_lines (current_source_symtab, desc); | |
1437 | ||
1438 | if (line < 1 || line > current_source_symtab->nlines) | |
1439 | { | |
1440 | close (desc); | |
1441 | error ("Expression not found"); | |
1442 | } | |
1443 | ||
1444 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1445 | { | |
1446 | close (desc); | |
1447 | perror_with_name (current_source_symtab->filename); | |
1448 | } | |
1449 | ||
1450 | stream = fdopen (desc, FDOPEN_MODE); | |
1451 | clearerr (stream); | |
c5aa993b JM |
1452 | while (1) |
1453 | { | |
1454 | static char *buf = NULL; | |
1455 | register char *p; | |
1456 | int cursize, newsize; | |
1457 | ||
1458 | cursize = 256; | |
1459 | buf = xmalloc (cursize); | |
1460 | p = buf; | |
1461 | ||
1462 | c = getc (stream); | |
1463 | if (c == EOF) | |
1464 | break; | |
1465 | do | |
c906108c | 1466 | { |
c5aa993b JM |
1467 | *p++ = c; |
1468 | if (p - buf == cursize) | |
1469 | { | |
1470 | newsize = cursize + cursize / 2; | |
1471 | buf = xrealloc (buf, newsize); | |
1472 | p = buf + cursize; | |
1473 | cursize = newsize; | |
1474 | } | |
c906108c | 1475 | } |
c5aa993b | 1476 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1477 | |
7be570e7 JM |
1478 | #ifdef CRLF_SOURCE_FILES |
1479 | /* Remove the \r, if any, at the end of the line, otherwise | |
1480 | regular expressions that end with $ or \n won't work. */ | |
1481 | if (p - buf > 1 && p[-2] == '\r') | |
1482 | { | |
1483 | p--; | |
1484 | p[-1] = '\n'; | |
1485 | } | |
1486 | #endif | |
1487 | ||
c5aa993b JM |
1488 | /* we now have a source line in buf, null terminate and match */ |
1489 | *p = 0; | |
1490 | if (re_exec (buf) > 0) | |
1491 | { | |
1492 | /* Match! */ | |
1493 | fclose (stream); | |
c5aa993b JM |
1494 | print_source_lines (current_source_symtab, line, line + 1, 0); |
1495 | set_internalvar (lookup_internalvar ("_"), | |
1496 | value_from_longest (builtin_type_int, | |
1497 | (LONGEST) line)); | |
1498 | current_source_line = max (line - lines_to_list / 2, 1); | |
1499 | return; | |
1500 | } | |
1501 | line++; | |
1502 | } | |
c906108c SS |
1503 | |
1504 | printf_filtered ("Expression not found\n"); | |
1505 | fclose (stream); | |
1506 | } | |
1507 | ||
1508 | /* ARGSUSED */ | |
1509 | static void | |
fba45db2 | 1510 | reverse_search_command (char *regex, int from_tty) |
c906108c SS |
1511 | { |
1512 | register int c; | |
1513 | register int desc; | |
1514 | register FILE *stream; | |
1515 | int line; | |
1516 | char *msg; | |
063190b6 | 1517 | |
c906108c | 1518 | line = last_line_listed - 1; |
c906108c SS |
1519 | |
1520 | msg = (char *) re_comp (regex); | |
1521 | if (msg) | |
1522 | error (msg); | |
1523 | ||
1524 | if (current_source_symtab == 0) | |
1525 | select_source_symtab (0); | |
1526 | ||
1527 | desc = open_source_file (current_source_symtab); | |
1528 | if (desc < 0) | |
1529 | perror_with_name (current_source_symtab->filename); | |
1530 | ||
1531 | if (current_source_symtab->line_charpos == 0) | |
1532 | find_source_lines (current_source_symtab, desc); | |
1533 | ||
1534 | if (line < 1 || line > current_source_symtab->nlines) | |
1535 | { | |
1536 | close (desc); | |
1537 | error ("Expression not found"); | |
1538 | } | |
1539 | ||
1540 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1541 | { | |
1542 | close (desc); | |
1543 | perror_with_name (current_source_symtab->filename); | |
1544 | } | |
1545 | ||
1546 | stream = fdopen (desc, FDOPEN_MODE); | |
1547 | clearerr (stream); | |
1548 | while (line > 1) | |
1549 | { | |
1550 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1551 | char buf[4096]; /* Should be reasonable??? */ | |
1552 | register char *p = buf; | |
1553 | ||
1554 | c = getc (stream); | |
1555 | if (c == EOF) | |
1556 | break; | |
c5aa993b JM |
1557 | do |
1558 | { | |
1559 | *p++ = c; | |
1560 | } | |
1561 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1562 | |
7be570e7 JM |
1563 | #ifdef CRLF_SOURCE_FILES |
1564 | /* Remove the \r, if any, at the end of the line, otherwise | |
1565 | regular expressions that end with $ or \n won't work. */ | |
1566 | if (p - buf > 1 && p[-2] == '\r') | |
1567 | { | |
1568 | p--; | |
1569 | p[-1] = '\n'; | |
1570 | } | |
1571 | #endif | |
1572 | ||
c906108c SS |
1573 | /* We now have a source line in buf; null terminate and match. */ |
1574 | *p = 0; | |
1575 | if (re_exec (buf) > 0) | |
1576 | { | |
1577 | /* Match! */ | |
1578 | fclose (stream); | |
c5aa993b | 1579 | print_source_lines (current_source_symtab, line, line + 1, 0); |
c906108c SS |
1580 | set_internalvar (lookup_internalvar ("_"), |
1581 | value_from_longest (builtin_type_int, | |
1582 | (LONGEST) line)); | |
1583 | current_source_line = max (line - lines_to_list / 2, 1); | |
1584 | return; | |
1585 | } | |
1586 | line--; | |
1587 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1588 | { | |
1589 | fclose (stream); | |
1590 | perror_with_name (current_source_symtab->filename); | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | printf_filtered ("Expression not found\n"); | |
1595 | fclose (stream); | |
1596 | return; | |
1597 | } | |
1598 | \f | |
1599 | void | |
fba45db2 | 1600 | _initialize_source (void) |
c906108c SS |
1601 | { |
1602 | struct cmd_list_element *c; | |
1603 | current_source_symtab = 0; | |
1604 | init_source_path (); | |
1605 | ||
1606 | /* The intention is to use POSIX Basic Regular Expressions. | |
1607 | Always use the GNU regex routine for consistency across all hosts. | |
1608 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1609 | just an approximation. */ | |
1610 | re_set_syntax (RE_SYNTAX_GREP); | |
1611 | ||
1612 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1613 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1614 | Forget cached info on source file locations and line positions.\n\ |
1615 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1616 | directory in which the source file was compiled into object code.\n\ | |
1617 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1618 | &cmdlist); | |
1619 | ||
1620 | if (dbx_commands) | |
c5aa993b | 1621 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1622 | |
1623 | c->completer = filename_completer; | |
1624 | ||
1625 | add_cmd ("directories", no_class, show_directories, | |
1626 | "Current search path for finding source files.\n\ | |
1627 | $cwd in the path means the current working directory.\n\ | |
1628 | $cdir in the path means the compilation directory of the source file.", | |
1629 | &showlist); | |
1630 | ||
1631 | if (xdb_commands) | |
1632 | { | |
c5aa993b | 1633 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1634 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1635 | "Current search path for finding source files.\n\ |
c906108c SS |
1636 | $cwd in the path means the current working directory.\n\ |
1637 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1638 | &cmdlist); |
c906108c SS |
1639 | } |
1640 | ||
1641 | add_info ("source", source_info, | |
1642 | "Information about the current source file."); | |
1643 | ||
1644 | add_info ("line", line_info, | |
1645 | concat ("Core addresses of the code for a source line.\n\ | |
1646 | Line can be specified as\n\ | |
1647 | LINENUM, to list around that line in current file,\n\ | |
1648 | FILE:LINENUM, to list around that line in that file,\n\ | |
1649 | FUNCTION, to list around beginning of that function,\n\ | |
1650 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1651 | ", "\ | |
1652 | Default is to describe the last source line that was listed.\n\n\ | |
1653 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1654 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1655 | The address is also stored as the value of \"$_\".", NULL)); | |
1656 | ||
1657 | add_com ("forward-search", class_files, forward_search_command, | |
1658 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1659 | The matching line number is also stored as the value of \"$_\"."); | |
1660 | add_com_alias ("search", "forward-search", class_files, 0); | |
1661 | ||
1662 | add_com ("reverse-search", class_files, reverse_search_command, | |
1663 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1664 | The matching line number is also stored as the value of \"$_\"."); | |
1665 | ||
1666 | if (xdb_commands) | |
1667 | { | |
c5aa993b JM |
1668 | add_com_alias ("/", "forward-search", class_files, 0); |
1669 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1670 | } |
1671 | ||
1672 | add_com ("list", class_files, list_command, | |
1673 | concat ("List specified function or line.\n\ | |
1674 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1675 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1676 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1677 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1678 | ", "\ | |
1679 | Lines can be specified in these ways:\n\ | |
1680 | LINENUM, to list around that line in current file,\n\ | |
1681 | FILE:LINENUM, to list around that line in that file,\n\ | |
1682 | FUNCTION, to list around beginning of that function,\n\ | |
1683 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1684 | *ADDRESS, to list around the line containing that address.\n\ | |
1685 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1686 | ||
1687 | if (!xdb_commands) | |
1688 | add_com_alias ("l", "list", class_files, 1); | |
1689 | else | |
1690 | add_com_alias ("v", "list", class_files, 1); | |
1691 | ||
1692 | if (dbx_commands) | |
1693 | add_com_alias ("file", "list", class_files, 1); | |
1694 | ||
1695 | add_show_from_set | |
1696 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1697 | (char *) &lines_to_list, |
1698 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1699 | &setlist), |
1700 | &showlist); | |
1701 | } |