Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
4e8f7a8b | 20 | #include "defs.h" |
4e8f7a8b | 21 | #include <ctype.h> |
0b6cb71e | 22 | #include "gdb_wait.h" |
4e8f7a8b | 23 | #include "event-top.h" |
95e54da7 | 24 | #include "gdbthread.h" |
202cbf1c | 25 | #include "fnmatch.h" |
cbb099e8 | 26 | #include "gdb_bfd.h" |
7991dee7 JK |
27 | #ifdef HAVE_SYS_RESOURCE_H |
28 | #include <sys/resource.h> | |
29 | #endif /* HAVE_SYS_RESOURCE_H */ | |
4e8f7a8b | 30 | |
6a83354a AC |
31 | #ifdef TUI |
32 | #include "tui/tui.h" /* For tui_get_command_dimension. */ | |
33 | #endif | |
34 | ||
9d271fd8 AC |
35 | #ifdef __GO32__ |
36 | #include <pc.h> | |
37 | #endif | |
38 | ||
042be3a9 | 39 | #include <signal.h> |
0a1c4d10 | 40 | #include "timeval-utils.h" |
c906108c SS |
41 | #include "gdbcmd.h" |
42 | #include "serial.h" | |
43 | #include "bfd.h" | |
44 | #include "target.h" | |
50f182aa | 45 | #include "gdb-demangle.h" |
c906108c SS |
46 | #include "expression.h" |
47 | #include "language.h" | |
234b45d4 | 48 | #include "charset.h" |
c906108c | 49 | #include "annotate.h" |
303c8ebd | 50 | #include "filenames.h" |
7b90c3f9 | 51 | #include "symfile.h" |
ae5a43e0 | 52 | #include "gdb_obstack.h" |
9544c605 | 53 | #include "gdbcore.h" |
698ba934 | 54 | #include "top.h" |
7c953934 | 55 | #include "main.h" |
cb08cc53 | 56 | #include "solist.h" |
c906108c | 57 | |
8731e58e | 58 | #include "inferior.h" /* for signed_pointer_to_address */ |
ac2e2ef7 | 59 | |
3b78cdbb | 60 | #include "gdb_curses.h" |
020cc13c | 61 | |
dbda9972 | 62 | #include "readline/readline.h" |
c906108c | 63 | |
438e1e42 | 64 | #include "gdb_sys_time.h" |
75feb17d DJ |
65 | #include <time.h> |
66 | ||
8626589c | 67 | #include "gdb_usleep.h" |
390a8aca | 68 | #include "interps.h" |
db1ff28b | 69 | #include "gdb_regex.h" |
8626589c | 70 | |
a3828db0 | 71 | #if !HAVE_DECL_MALLOC |
5ac79d78 | 72 | extern PTR malloc (); /* ARI: PTR */ |
3c37485b | 73 | #endif |
a3828db0 | 74 | #if !HAVE_DECL_REALLOC |
5ac79d78 | 75 | extern PTR realloc (); /* ARI: PTR */ |
0e52036f | 76 | #endif |
a3828db0 | 77 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
78 | extern void free (); |
79 | #endif | |
81b8eb80 | 80 | |
9a4105ab | 81 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
82 | |
83 | /* Prototypes for local functions */ | |
84 | ||
d9fcf2fb | 85 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 86 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 87 | |
d9fcf2fb | 88 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void prompt_for_continue (void); |
c906108c | 91 | |
eb0d3137 | 92 | static void set_screen_size (void); |
a14ed312 | 93 | static void set_width (void); |
c906108c | 94 | |
260c0b2a DE |
95 | /* Time spent in prompt_for_continue in the currently executing command |
96 | waiting for user to respond. | |
97 | Initialized in make_command_stats_cleanup. | |
98 | Modified in prompt_for_continue and defaulted_query. | |
99 | Used in report_command_stats. */ | |
100 | ||
101 | static struct timeval prompt_for_continue_wait_time; | |
102 | ||
75feb17d DJ |
103 | /* A flag indicating whether to timestamp debugging messages. */ |
104 | ||
105 | static int debug_timestamp = 0; | |
106 | ||
581e13c1 | 107 | /* Nonzero if we have job control. */ |
c906108c SS |
108 | |
109 | int job_control; | |
110 | ||
c906108c SS |
111 | /* Nonzero means that strings with character values >0x7F should be printed |
112 | as octal escapes. Zero means just print the value (e.g. it's an | |
113 | international character, and the terminal or window can cope.) */ | |
114 | ||
115 | int sevenbit_strings = 0; | |
920d2a44 AC |
116 | static void |
117 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
118 | struct cmd_list_element *c, const char *value) | |
119 | { | |
3e43a32a MS |
120 | fprintf_filtered (file, _("Printing of 8-bit characters " |
121 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
122 | value); |
123 | } | |
c906108c | 124 | |
c906108c SS |
125 | /* String to be printed before warning messages, if any. */ |
126 | ||
127 | char *warning_pre_print = "\nwarning: "; | |
128 | ||
129 | int pagination_enabled = 1; | |
920d2a44 AC |
130 | static void |
131 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
132 | struct cmd_list_element *c, const char *value) | |
133 | { | |
134 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
135 | } | |
136 | ||
c906108c | 137 | \f |
c27f5738 | 138 | /* Cleanup utilities. |
c5aa993b | 139 | |
c27f5738 DE |
140 | These are not defined in cleanups.c (nor declared in cleanups.h) |
141 | because while they use the "cleanup API" they are not part of the | |
142 | "cleanup API". */ | |
7a292a7a | 143 | |
7a292a7a | 144 | static void |
fba45db2 | 145 | do_freeargv (void *arg) |
7a292a7a | 146 | { |
c5aa993b | 147 | freeargv ((char **) arg); |
7a292a7a SS |
148 | } |
149 | ||
150 | struct cleanup * | |
fba45db2 | 151 | make_cleanup_freeargv (char **arg) |
7a292a7a | 152 | { |
e0088cfd | 153 | return make_cleanup (do_freeargv, arg); |
7a292a7a SS |
154 | } |
155 | ||
5c65bbb6 AC |
156 | static void |
157 | do_bfd_close_cleanup (void *arg) | |
158 | { | |
19ba03f4 | 159 | gdb_bfd_unref ((bfd *) arg); |
5c65bbb6 AC |
160 | } |
161 | ||
162 | struct cleanup * | |
f9a062ff | 163 | make_cleanup_bfd_unref (bfd *abfd) |
5c65bbb6 AC |
164 | { |
165 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
166 | } | |
167 | ||
7c8a8b04 TT |
168 | /* Helper function which does the work for make_cleanup_fclose. */ |
169 | ||
170 | static void | |
171 | do_fclose_cleanup (void *arg) | |
172 | { | |
19ba03f4 | 173 | FILE *file = (FILE *) arg; |
e0627e85 | 174 | |
c02866a0 | 175 | fclose (file); |
7c8a8b04 TT |
176 | } |
177 | ||
178 | /* Return a new cleanup that closes FILE. */ | |
179 | ||
180 | struct cleanup * | |
181 | make_cleanup_fclose (FILE *file) | |
182 | { | |
183 | return make_cleanup (do_fclose_cleanup, file); | |
184 | } | |
185 | ||
16ad9370 TT |
186 | /* Helper function which does the work for make_cleanup_obstack_free. */ |
187 | ||
188 | static void | |
189 | do_obstack_free (void *arg) | |
190 | { | |
19ba03f4 | 191 | struct obstack *ob = (struct obstack *) arg; |
e0627e85 | 192 | |
16ad9370 TT |
193 | obstack_free (ob, NULL); |
194 | } | |
195 | ||
196 | /* Return a new cleanup that frees OBSTACK. */ | |
197 | ||
198 | struct cleanup * | |
199 | make_cleanup_obstack_free (struct obstack *obstack) | |
200 | { | |
201 | return make_cleanup (do_obstack_free, obstack); | |
202 | } | |
203 | ||
11cf8741 | 204 | static void |
d9fcf2fb | 205 | do_ui_file_delete (void *arg) |
11cf8741 | 206 | { |
19ba03f4 | 207 | ui_file_delete ((struct ui_file *) arg); |
11cf8741 JM |
208 | } |
209 | ||
210 | struct cleanup * | |
d9fcf2fb | 211 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 212 | { |
e0088cfd | 213 | return make_cleanup (do_ui_file_delete, arg); |
11cf8741 JM |
214 | } |
215 | ||
8d4d924b JK |
216 | /* Helper function for make_cleanup_ui_out_redirect_pop. */ |
217 | ||
218 | static void | |
219 | do_ui_out_redirect_pop (void *arg) | |
220 | { | |
19ba03f4 | 221 | struct ui_out *uiout = (struct ui_out *) arg; |
8d4d924b JK |
222 | |
223 | if (ui_out_redirect (uiout, NULL) < 0) | |
224 | warning (_("Cannot restore redirection of the current output protocol")); | |
225 | } | |
226 | ||
227 | /* Return a new cleanup that pops the last redirection by ui_out_redirect | |
228 | with NULL parameter. */ | |
229 | ||
230 | struct cleanup * | |
231 | make_cleanup_ui_out_redirect_pop (struct ui_out *uiout) | |
232 | { | |
e0088cfd | 233 | return make_cleanup (do_ui_out_redirect_pop, uiout); |
8d4d924b JK |
234 | } |
235 | ||
7b90c3f9 JB |
236 | static void |
237 | do_free_section_addr_info (void *arg) | |
238 | { | |
19ba03f4 | 239 | free_section_addr_info ((struct section_addr_info *) arg); |
7b90c3f9 JB |
240 | } |
241 | ||
242 | struct cleanup * | |
243 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
244 | { | |
e0088cfd | 245 | return make_cleanup (do_free_section_addr_info, addrs); |
7b90c3f9 JB |
246 | } |
247 | ||
0b080f59 VP |
248 | struct restore_integer_closure |
249 | { | |
250 | int *variable; | |
251 | int value; | |
252 | }; | |
253 | ||
254 | static void | |
255 | restore_integer (void *p) | |
256 | { | |
19ba03f4 SM |
257 | struct restore_integer_closure *closure |
258 | = (struct restore_integer_closure *) p; | |
e0627e85 | 259 | |
0b080f59 VP |
260 | *(closure->variable) = closure->value; |
261 | } | |
7b90c3f9 | 262 | |
3e43a32a MS |
263 | /* Remember the current value of *VARIABLE and make it restored when |
264 | the cleanup is run. */ | |
5da1313b | 265 | |
c906108c | 266 | struct cleanup * |
0b080f59 VP |
267 | make_cleanup_restore_integer (int *variable) |
268 | { | |
8d749320 | 269 | struct restore_integer_closure *c = XNEW (struct restore_integer_closure); |
e0627e85 | 270 | |
0b080f59 VP |
271 | c->variable = variable; |
272 | c->value = *variable; | |
273 | ||
e0088cfd | 274 | return make_cleanup_dtor (restore_integer, (void *) c, xfree); |
0b080f59 VP |
275 | } |
276 | ||
3e43a32a MS |
277 | /* Remember the current value of *VARIABLE and make it restored when |
278 | the cleanup is run. */ | |
5da1313b JK |
279 | |
280 | struct cleanup * | |
281 | make_cleanup_restore_uinteger (unsigned int *variable) | |
282 | { | |
283 | return make_cleanup_restore_integer ((int *) variable); | |
284 | } | |
285 | ||
c0edd9ed JK |
286 | /* Helper for make_cleanup_unpush_target. */ |
287 | ||
288 | static void | |
289 | do_unpush_target (void *arg) | |
290 | { | |
19ba03f4 | 291 | struct target_ops *ops = (struct target_ops *) arg; |
c0edd9ed JK |
292 | |
293 | unpush_target (ops); | |
294 | } | |
295 | ||
296 | /* Return a new cleanup that unpushes OPS. */ | |
297 | ||
298 | struct cleanup * | |
299 | make_cleanup_unpush_target (struct target_ops *ops) | |
300 | { | |
e0088cfd | 301 | return make_cleanup (do_unpush_target, ops); |
c0edd9ed JK |
302 | } |
303 | ||
8e3b41a9 JK |
304 | /* Helper for make_cleanup_htab_delete compile time checking the types. */ |
305 | ||
306 | static void | |
307 | do_htab_delete_cleanup (void *htab_voidp) | |
308 | { | |
19ba03f4 | 309 | htab_t htab = (htab_t) htab_voidp; |
8e3b41a9 JK |
310 | |
311 | htab_delete (htab); | |
312 | } | |
313 | ||
314 | /* Return a new cleanup that deletes HTAB. */ | |
315 | ||
316 | struct cleanup * | |
317 | make_cleanup_htab_delete (htab_t htab) | |
318 | { | |
319 | return make_cleanup (do_htab_delete_cleanup, htab); | |
320 | } | |
321 | ||
5da1313b JK |
322 | struct restore_ui_file_closure |
323 | { | |
324 | struct ui_file **variable; | |
325 | struct ui_file *value; | |
326 | }; | |
327 | ||
328 | static void | |
329 | do_restore_ui_file (void *p) | |
330 | { | |
19ba03f4 SM |
331 | struct restore_ui_file_closure *closure |
332 | = (struct restore_ui_file_closure *) p; | |
5da1313b JK |
333 | |
334 | *(closure->variable) = closure->value; | |
335 | } | |
336 | ||
337 | /* Remember the current value of *VARIABLE and make it restored when | |
338 | the cleanup is run. */ | |
339 | ||
340 | struct cleanup * | |
341 | make_cleanup_restore_ui_file (struct ui_file **variable) | |
342 | { | |
343 | struct restore_ui_file_closure *c = XNEW (struct restore_ui_file_closure); | |
344 | ||
345 | c->variable = variable; | |
346 | c->value = *variable; | |
347 | ||
348 | return make_cleanup_dtor (do_restore_ui_file, (void *) c, xfree); | |
349 | } | |
350 | ||
028d0ed5 TJB |
351 | /* Helper for make_cleanup_value_free_to_mark. */ |
352 | ||
353 | static void | |
354 | do_value_free_to_mark (void *value) | |
355 | { | |
356 | value_free_to_mark ((struct value *) value); | |
357 | } | |
358 | ||
359 | /* Free all values allocated since MARK was obtained by value_mark | |
360 | (except for those released) when the cleanup is run. */ | |
361 | ||
362 | struct cleanup * | |
363 | make_cleanup_value_free_to_mark (struct value *mark) | |
364 | { | |
e0088cfd | 365 | return make_cleanup (do_value_free_to_mark, mark); |
028d0ed5 TJB |
366 | } |
367 | ||
72fc29ff TT |
368 | /* Helper for make_cleanup_value_free. */ |
369 | ||
370 | static void | |
371 | do_value_free (void *value) | |
372 | { | |
19ba03f4 | 373 | value_free ((struct value *) value); |
72fc29ff TT |
374 | } |
375 | ||
376 | /* Free VALUE. */ | |
377 | ||
378 | struct cleanup * | |
379 | make_cleanup_value_free (struct value *value) | |
380 | { | |
e0088cfd | 381 | return make_cleanup (do_value_free, value); |
72fc29ff TT |
382 | } |
383 | ||
cb08cc53 JK |
384 | /* Helper for make_cleanup_free_so. */ |
385 | ||
386 | static void | |
387 | do_free_so (void *arg) | |
388 | { | |
19ba03f4 | 389 | struct so_list *so = (struct so_list *) arg; |
cb08cc53 JK |
390 | |
391 | free_so (so); | |
392 | } | |
393 | ||
394 | /* Make cleanup handler calling free_so for SO. */ | |
395 | ||
396 | struct cleanup * | |
397 | make_cleanup_free_so (struct so_list *so) | |
398 | { | |
e0088cfd | 399 | return make_cleanup (do_free_so, so); |
cb08cc53 JK |
400 | } |
401 | ||
5b12a61c JK |
402 | /* Helper for make_cleanup_restore_current_language. */ |
403 | ||
404 | static void | |
405 | do_restore_current_language (void *p) | |
406 | { | |
aead7601 | 407 | enum language saved_lang = (enum language) (uintptr_t) p; |
5b12a61c JK |
408 | |
409 | set_language (saved_lang); | |
410 | } | |
411 | ||
412 | /* Remember the current value of CURRENT_LANGUAGE and make it restored when | |
413 | the cleanup is run. */ | |
414 | ||
415 | struct cleanup * | |
416 | make_cleanup_restore_current_language (void) | |
417 | { | |
418 | enum language saved_lang = current_language->la_language; | |
419 | ||
420 | return make_cleanup (do_restore_current_language, | |
421 | (void *) (uintptr_t) saved_lang); | |
422 | } | |
423 | ||
410a0ff2 SDJ |
424 | /* Helper function for make_cleanup_clear_parser_state. */ |
425 | ||
426 | static void | |
427 | do_clear_parser_state (void *ptr) | |
428 | { | |
429 | struct parser_state **p = (struct parser_state **) ptr; | |
430 | ||
431 | *p = NULL; | |
432 | } | |
433 | ||
434 | /* Clean (i.e., set to NULL) the parser state variable P. */ | |
435 | ||
436 | struct cleanup * | |
437 | make_cleanup_clear_parser_state (struct parser_state **p) | |
438 | { | |
439 | return make_cleanup (do_clear_parser_state, (void *) p); | |
440 | } | |
441 | ||
c906108c SS |
442 | /* This function is useful for cleanups. |
443 | Do | |
444 | ||
c5aa993b JM |
445 | foo = xmalloc (...); |
446 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
447 | |
448 | to arrange to free the object thus allocated. */ | |
449 | ||
450 | void | |
2f9429ae | 451 | free_current_contents (void *ptr) |
c906108c | 452 | { |
19ba03f4 | 453 | void **location = (void **) ptr; |
e0627e85 | 454 | |
e2f9c474 | 455 | if (location == NULL) |
8e65ff28 | 456 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 457 | _("free_current_contents: NULL pointer")); |
2f9429ae | 458 | if (*location != NULL) |
e2f9c474 | 459 | { |
b8c9b27d | 460 | xfree (*location); |
e2f9c474 AC |
461 | *location = NULL; |
462 | } | |
c906108c | 463 | } |
c906108c | 464 | \f |
c5aa993b | 465 | |
8731e58e | 466 | |
f5a96129 AC |
467 | /* Print a warning message. The first argument STRING is the warning |
468 | message, used as an fprintf format string, the second is the | |
469 | va_list of arguments for that string. A warning is unfiltered (not | |
470 | paginated) so that the user does not need to page through each | |
471 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
472 | |
473 | void | |
f5a96129 | 474 | vwarning (const char *string, va_list args) |
c906108c | 475 | { |
9a4105ab AC |
476 | if (deprecated_warning_hook) |
477 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
478 | else |
479 | { | |
c5ac1540 PA |
480 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
481 | ||
0d2f5c07 | 482 | if (target_supports_terminal_ours ()) |
c5ac1540 PA |
483 | { |
484 | make_cleanup_restore_target_terminal (); | |
485 | target_terminal_ours_for_output (); | |
486 | } | |
0d2f5c07 GB |
487 | if (filtered_printing_initialized ()) |
488 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
489 | gdb_flush (gdb_stdout); |
490 | if (warning_pre_print) | |
306d9ac5 | 491 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
492 | vfprintf_unfiltered (gdb_stderr, string, args); |
493 | fprintf_unfiltered (gdb_stderr, "\n"); | |
c5ac1540 PA |
494 | |
495 | do_cleanups (old_chain); | |
f5a96129 | 496 | } |
c906108c SS |
497 | } |
498 | ||
c906108c SS |
499 | /* Print an error message and return to command level. |
500 | The first argument STRING is the error message, used as a fprintf string, | |
501 | and the remaining args are passed as arguments to it. */ | |
502 | ||
c25c4a8b | 503 | void |
4ce44c66 JM |
504 | verror (const char *string, va_list args) |
505 | { | |
6b1b7650 | 506 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
507 | } |
508 | ||
c25c4a8b | 509 | void |
d75e3c94 | 510 | error_stream (struct ui_file *stream) |
2acceee2 | 511 | { |
759ef836 | 512 | char *message = ui_file_xstrdup (stream, NULL); |
e0627e85 | 513 | |
6b1b7650 | 514 | make_cleanup (xfree, message); |
8a3fe4f8 | 515 | error (("%s"), message); |
2acceee2 | 516 | } |
c906108c | 517 | |
2437fd32 GB |
518 | /* Emit a message and abort. */ |
519 | ||
520 | static void ATTRIBUTE_NORETURN | |
521 | abort_with_message (const char *msg) | |
522 | { | |
523 | if (gdb_stderr == NULL) | |
524 | fputs (msg, stderr); | |
525 | else | |
526 | fputs_unfiltered (msg, gdb_stderr); | |
527 | ||
528 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
529 | } | |
530 | ||
7991dee7 JK |
531 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
532 | ||
eae7090b | 533 | void |
7991dee7 JK |
534 | dump_core (void) |
535 | { | |
536 | #ifdef HAVE_SETRLIMIT | |
537 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
538 | ||
539 | setrlimit (RLIMIT_CORE, &rlim); | |
540 | #endif /* HAVE_SETRLIMIT */ | |
541 | ||
542 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
543 | } | |
544 | ||
3e43a32a | 545 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
546 | function. Returns zero if GDB cannot or should not dump core. |
547 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
548 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 549 | |
eae7090b GB |
550 | int |
551 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
552 | { |
553 | #ifdef HAVE_GETRLIMIT | |
554 | struct rlimit rlim; | |
555 | ||
556 | /* Be quiet and assume we can dump if an error is returned. */ | |
557 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
558 | return 1; | |
559 | ||
eae7090b | 560 | switch (limit_kind) |
7991dee7 | 561 | { |
eae7090b GB |
562 | case LIMIT_CUR: |
563 | if (rlim.rlim_cur == 0) | |
564 | return 0; | |
565 | ||
566 | case LIMIT_MAX: | |
567 | if (rlim.rlim_max == 0) | |
568 | return 0; | |
7991dee7 JK |
569 | } |
570 | #endif /* HAVE_GETRLIMIT */ | |
571 | ||
572 | return 1; | |
573 | } | |
574 | ||
eae7090b GB |
575 | /* Print a warning that we cannot dump core. */ |
576 | ||
577 | void | |
578 | warn_cant_dump_core (const char *reason) | |
579 | { | |
580 | fprintf_unfiltered (gdb_stderr, | |
581 | _("%s\nUnable to dump core, use `ulimit -c" | |
582 | " unlimited' before executing GDB next time.\n"), | |
583 | reason); | |
584 | } | |
585 | ||
586 | /* Check whether GDB will be able to dump core using the dump_core | |
587 | function, and print a warning if we cannot. */ | |
588 | ||
589 | static int | |
590 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
591 | const char *reason) | |
592 | { | |
593 | int core_dump_allowed = can_dump_core (limit_kind); | |
594 | ||
595 | if (!core_dump_allowed) | |
596 | warn_cant_dump_core (reason); | |
597 | ||
598 | return core_dump_allowed; | |
599 | } | |
600 | ||
3c16cced PA |
601 | /* Allow the user to configure the debugger behavior with respect to |
602 | what to do when an internal problem is detected. */ | |
603 | ||
604 | const char internal_problem_ask[] = "ask"; | |
605 | const char internal_problem_yes[] = "yes"; | |
606 | const char internal_problem_no[] = "no"; | |
40478521 | 607 | static const char *const internal_problem_modes[] = |
3c16cced PA |
608 | { |
609 | internal_problem_ask, | |
610 | internal_problem_yes, | |
611 | internal_problem_no, | |
612 | NULL | |
613 | }; | |
3c16cced | 614 | |
581e13c1 | 615 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
616 | if they want to continue, dump core, or just exit. Return |
617 | something to indicate a quit. */ | |
c906108c | 618 | |
dec43320 | 619 | struct internal_problem |
c906108c | 620 | { |
dec43320 | 621 | const char *name; |
57fcfb1b | 622 | int user_settable_should_quit; |
3c16cced | 623 | const char *should_quit; |
57fcfb1b | 624 | int user_settable_should_dump_core; |
3c16cced | 625 | const char *should_dump_core; |
dec43320 AC |
626 | }; |
627 | ||
628 | /* Report a problem, internal to GDB, to the user. Once the problem | |
629 | has been reported, and assuming GDB didn't quit, the caller can | |
630 | either allow execution to resume or throw an error. */ | |
631 | ||
a0b31db1 | 632 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 633 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 634 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 635 | { |
dec43320 | 636 | static int dejavu; |
375fc983 | 637 | int quit_p; |
7be570e7 | 638 | int dump_core_p; |
714b1282 | 639 | char *reason; |
48be7c1b | 640 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
c906108c | 641 | |
dec43320 | 642 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
643 | { |
644 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 645 | |
714b1282 AC |
646 | switch (dejavu) |
647 | { | |
648 | case 0: | |
649 | dejavu = 1; | |
650 | break; | |
651 | case 1: | |
652 | dejavu = 2; | |
2437fd32 | 653 | abort_with_message (msg); |
714b1282 AC |
654 | default: |
655 | dejavu = 3; | |
bf1d7d9c JB |
656 | /* Newer GLIBC versions put the warn_unused_result attribute |
657 | on write, but this is one of those rare cases where | |
658 | ignoring the return value is correct. Casting to (void) | |
659 | does not fix this problem. This is the solution suggested | |
660 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
661 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 662 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
663 | exit (1); |
664 | } | |
665 | } | |
c906108c | 666 | |
714b1282 AC |
667 | /* Create a string containing the full error/warning message. Need |
668 | to call query with this full string, as otherwize the reason | |
669 | (error/warning) and question become separated. Format using a | |
670 | style similar to a compiler error message. Include extra detail | |
671 | so that the user knows that they are living on the edge. */ | |
672 | { | |
673 | char *msg; | |
5d502164 | 674 | |
e623b504 | 675 | msg = xstrvprintf (fmt, ap); |
3e43a32a MS |
676 | reason = xstrprintf ("%s:%d: %s: %s\n" |
677 | "A problem internal to GDB has been detected,\n" | |
678 | "further debugging may prove unreliable.", | |
679 | file, line, problem->name, msg); | |
714b1282 AC |
680 | xfree (msg); |
681 | make_cleanup (xfree, reason); | |
682 | } | |
7be570e7 | 683 | |
2437fd32 GB |
684 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
685 | if (gdb_stderr == NULL) | |
686 | { | |
687 | fputs (reason, stderr); | |
688 | abort_with_message ("\n"); | |
689 | } | |
690 | ||
691 | /* Try to get the message out and at the start of a new line. */ | |
692 | if (target_supports_terminal_ours ()) | |
c5ac1540 PA |
693 | { |
694 | make_cleanup_restore_target_terminal (); | |
695 | target_terminal_ours_for_output (); | |
696 | } | |
2437fd32 GB |
697 | if (filtered_printing_initialized ()) |
698 | begin_line (); | |
699 | ||
196a707b | 700 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
701 | if (problem->should_quit != internal_problem_ask |
702 | || !confirm | |
703 | || !filtered_printing_initialized ()) | |
196a707b GB |
704 | fprintf_unfiltered (gdb_stderr, "%s\n", reason); |
705 | ||
3c16cced | 706 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 707 | { |
dec43320 | 708 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
709 | this lessens the likelihood of GDB going into an infinite |
710 | loop. */ | |
2437fd32 | 711 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 712 | quit_p = 1; |
26bb68be PP |
713 | else |
714 | quit_p = query (_("%s\nQuit this debugging session? "), reason); | |
dec43320 | 715 | } |
3c16cced PA |
716 | else if (problem->should_quit == internal_problem_yes) |
717 | quit_p = 1; | |
718 | else if (problem->should_quit == internal_problem_no) | |
719 | quit_p = 0; | |
720 | else | |
721 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 722 | |
add6c04d GB |
723 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
724 | if (REPORT_BUGS_TO[0]) | |
725 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
726 | REPORT_BUGS_TO); | |
727 | fputs_unfiltered ("\n\n", gdb_stderr); | |
728 | ||
3c16cced | 729 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 730 | { |
eae7090b | 731 | if (!can_dump_core_warn (LIMIT_MAX, reason)) |
7991dee7 | 732 | dump_core_p = 0; |
2437fd32 GB |
733 | else if (!filtered_printing_initialized ()) |
734 | dump_core_p = 1; | |
7991dee7 JK |
735 | else |
736 | { | |
737 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
738 | `dropping' so that it is easier to see that something went | |
739 | wrong in GDB. */ | |
740 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); | |
741 | } | |
dec43320 | 742 | } |
3c16cced | 743 | else if (problem->should_dump_core == internal_problem_yes) |
eae7090b | 744 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason); |
3c16cced PA |
745 | else if (problem->should_dump_core == internal_problem_no) |
746 | dump_core_p = 0; | |
747 | else | |
748 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 749 | |
375fc983 | 750 | if (quit_p) |
7be570e7 JM |
751 | { |
752 | if (dump_core_p) | |
7991dee7 | 753 | dump_core (); |
375fc983 AC |
754 | else |
755 | exit (1); | |
7be570e7 JM |
756 | } |
757 | else | |
758 | { | |
759 | if (dump_core_p) | |
375fc983 | 760 | { |
9b265ec2 | 761 | #ifdef HAVE_WORKING_FORK |
375fc983 | 762 | if (fork () == 0) |
7991dee7 | 763 | dump_core (); |
9b265ec2 | 764 | #endif |
375fc983 | 765 | } |
7be570e7 | 766 | } |
96baa820 JM |
767 | |
768 | dejavu = 0; | |
48be7c1b | 769 | do_cleanups (cleanup); |
dec43320 AC |
770 | } |
771 | ||
772 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 773 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
774 | }; |
775 | ||
c25c4a8b | 776 | void |
8731e58e | 777 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
778 | { |
779 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 780 | throw_quit (_("Command aborted.")); |
c906108c SS |
781 | } |
782 | ||
dec43320 | 783 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 784 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
785 | }; |
786 | ||
787 | void | |
8731e58e | 788 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
789 | { |
790 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
791 | } | |
792 | ||
57fcfb1b GB |
793 | static struct internal_problem demangler_warning_problem = { |
794 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
795 | }; | |
796 | ||
797 | void | |
798 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
799 | { | |
800 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
801 | } | |
802 | ||
803 | void | |
804 | demangler_warning (const char *file, int line, const char *string, ...) | |
805 | { | |
806 | va_list ap; | |
807 | ||
808 | va_start (ap, string); | |
809 | demangler_vwarning (file, line, string, ap); | |
810 | va_end (ap); | |
811 | } | |
812 | ||
3c16cced PA |
813 | /* Dummy functions to keep add_prefix_cmd happy. */ |
814 | ||
815 | static void | |
816 | set_internal_problem_cmd (char *args, int from_tty) | |
817 | { | |
818 | } | |
819 | ||
820 | static void | |
821 | show_internal_problem_cmd (char *args, int from_tty) | |
822 | { | |
823 | } | |
824 | ||
825 | /* When GDB reports an internal problem (error or warning) it gives | |
826 | the user the opportunity to quit GDB and/or create a core file of | |
827 | the current debug session. This function registers a few commands | |
828 | that make it possible to specify that GDB should always or never | |
829 | quit or create a core file, without asking. The commands look | |
830 | like: | |
831 | ||
832 | maint set PROBLEM-NAME quit ask|yes|no | |
833 | maint show PROBLEM-NAME quit | |
834 | maint set PROBLEM-NAME corefile ask|yes|no | |
835 | maint show PROBLEM-NAME corefile | |
836 | ||
837 | Where PROBLEM-NAME is currently "internal-error" or | |
838 | "internal-warning". */ | |
839 | ||
840 | static void | |
841 | add_internal_problem_command (struct internal_problem *problem) | |
842 | { | |
843 | struct cmd_list_element **set_cmd_list; | |
844 | struct cmd_list_element **show_cmd_list; | |
845 | char *set_doc; | |
846 | char *show_doc; | |
847 | ||
8d749320 SM |
848 | set_cmd_list = XNEW (struct cmd_list_element *); |
849 | show_cmd_list = XNEW (struct cmd_list_element *); | |
3c16cced PA |
850 | *set_cmd_list = NULL; |
851 | *show_cmd_list = NULL; | |
852 | ||
853 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
854 | problem->name); | |
855 | ||
856 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
857 | problem->name); | |
858 | ||
859 | add_prefix_cmd ((char*) problem->name, | |
860 | class_maintenance, set_internal_problem_cmd, set_doc, | |
861 | set_cmd_list, | |
c4f7c687 MK |
862 | concat ("maintenance set ", problem->name, " ", |
863 | (char *) NULL), | |
3c16cced PA |
864 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
865 | ||
866 | add_prefix_cmd ((char*) problem->name, | |
867 | class_maintenance, show_internal_problem_cmd, show_doc, | |
868 | show_cmd_list, | |
c4f7c687 MK |
869 | concat ("maintenance show ", problem->name, " ", |
870 | (char *) NULL), | |
3c16cced PA |
871 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
872 | ||
57fcfb1b GB |
873 | if (problem->user_settable_should_quit) |
874 | { | |
875 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
876 | "when an %s is detected"), | |
877 | problem->name); | |
878 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
879 | "when an %s is detected"), | |
880 | problem->name); | |
881 | add_setshow_enum_cmd ("quit", class_maintenance, | |
882 | internal_problem_modes, | |
883 | &problem->should_quit, | |
884 | set_doc, | |
885 | show_doc, | |
886 | NULL, /* help_doc */ | |
887 | NULL, /* setfunc */ | |
888 | NULL, /* showfunc */ | |
889 | set_cmd_list, | |
890 | show_cmd_list); | |
891 | ||
892 | xfree (set_doc); | |
893 | xfree (show_doc); | |
894 | } | |
1eefb858 | 895 | |
57fcfb1b GB |
896 | if (problem->user_settable_should_dump_core) |
897 | { | |
898 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
899 | "file of GDB when %s is detected"), | |
900 | problem->name); | |
901 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
902 | "file of GDB when %s is detected"), | |
903 | problem->name); | |
904 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
905 | internal_problem_modes, | |
906 | &problem->should_dump_core, | |
907 | set_doc, | |
908 | show_doc, | |
909 | NULL, /* help_doc */ | |
910 | NULL, /* setfunc */ | |
911 | NULL, /* showfunc */ | |
912 | set_cmd_list, | |
913 | show_cmd_list); | |
914 | ||
915 | xfree (set_doc); | |
916 | xfree (show_doc); | |
917 | } | |
3c16cced PA |
918 | } |
919 | ||
0cf4063e JB |
920 | /* Return a newly allocated string, containing the PREFIX followed |
921 | by the system error message for errno (separated by a colon). | |
922 | ||
923 | The result must be deallocated after use. */ | |
924 | ||
925 | static char * | |
926 | perror_string (const char *prefix) | |
927 | { | |
928 | char *err; | |
929 | char *combined; | |
930 | ||
931 | err = safe_strerror (errno); | |
932 | combined = (char *) xmalloc (strlen (err) + strlen (prefix) + 3); | |
933 | strcpy (combined, prefix); | |
934 | strcat (combined, ": "); | |
935 | strcat (combined, err); | |
936 | ||
937 | return combined; | |
938 | } | |
939 | ||
c906108c | 940 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
941 | as the file name for which the error was encountered. Use ERRCODE |
942 | for the thrown exception. Then return to command level. */ | |
c906108c | 943 | |
c25c4a8b | 944 | void |
598d3636 | 945 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 946 | { |
c906108c SS |
947 | char *combined; |
948 | ||
0cf4063e JB |
949 | combined = perror_string (string); |
950 | make_cleanup (xfree, combined); | |
c906108c SS |
951 | |
952 | /* I understand setting these is a matter of taste. Still, some people | |
953 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 954 | unreasonable. */ |
c906108c SS |
955 | bfd_set_error (bfd_error_no_error); |
956 | errno = 0; | |
957 | ||
598d3636 JK |
958 | throw_error (errcode, _("%s."), combined); |
959 | } | |
960 | ||
961 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
962 | ||
963 | void | |
964 | perror_with_name (const char *string) | |
965 | { | |
966 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
967 | } |
968 | ||
7c647d61 JB |
969 | /* Same as perror_with_name except that it prints a warning instead |
970 | of throwing an error. */ | |
971 | ||
972 | void | |
973 | perror_warning_with_name (const char *string) | |
974 | { | |
975 | char *combined; | |
976 | ||
977 | combined = perror_string (string); | |
978 | warning (_("%s"), combined); | |
979 | xfree (combined); | |
980 | } | |
981 | ||
c906108c SS |
982 | /* Print the system error message for ERRCODE, and also mention STRING |
983 | as the file name for which the error was encountered. */ | |
984 | ||
985 | void | |
6972bc8b | 986 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
987 | { |
988 | char *err; | |
989 | char *combined; | |
990 | ||
991 | err = safe_strerror (errcode); | |
992 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
993 | strcpy (combined, string); | |
994 | strcat (combined, ": "); | |
995 | strcat (combined, err); | |
996 | ||
997 | /* We want anything which was printed on stdout to come out first, before | |
998 | this message. */ | |
999 | gdb_flush (gdb_stdout); | |
1000 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
1001 | } | |
1002 | ||
1003 | /* Control C eventually causes this to be called, at a convenient time. */ | |
1004 | ||
1005 | void | |
fba45db2 | 1006 | quit (void) |
c906108c | 1007 | { |
f38d3ad1 PA |
1008 | struct ui *ui = current_ui; |
1009 | ||
06c868a8 JK |
1010 | if (sync_quit_force_run) |
1011 | { | |
1012 | sync_quit_force_run = 0; | |
268a799a | 1013 | quit_force (NULL, 0); |
06c868a8 JK |
1014 | } |
1015 | ||
7be570e7 JM |
1016 | #ifdef __MSDOS__ |
1017 | /* No steenking SIGINT will ever be coming our way when the | |
1018 | program is resumed. Don't lie. */ | |
2c51604d | 1019 | throw_quit ("Quit"); |
7be570e7 | 1020 | #else |
c906108c | 1021 | if (job_control |
8731e58e AC |
1022 | /* If there is no terminal switching for this target, then we can't |
1023 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 1024 | || !target_supports_terminal_ours ()) |
2c51604d | 1025 | throw_quit ("Quit"); |
c906108c | 1026 | else |
2c51604d | 1027 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 1028 | #endif |
c906108c SS |
1029 | } |
1030 | ||
abc56d60 PA |
1031 | /* See defs.h. */ |
1032 | ||
1033 | void | |
1034 | maybe_quit (void) | |
1035 | { | |
048094ac | 1036 | if (sync_quit_force_run) |
abc56d60 | 1037 | quit (); |
048094ac PA |
1038 | |
1039 | quit_handler (); | |
1040 | ||
abc56d60 PA |
1041 | if (deprecated_interactive_hook) |
1042 | deprecated_interactive_hook (); | |
abc56d60 PA |
1043 | } |
1044 | ||
c906108c | 1045 | \f |
c906108c | 1046 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 1047 | memory requested in SIZE. */ |
c906108c | 1048 | |
c25c4a8b | 1049 | void |
d26e3629 | 1050 | malloc_failure (long size) |
c906108c SS |
1051 | { |
1052 | if (size > 0) | |
1053 | { | |
8e65ff28 | 1054 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1055 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 1056 | size); |
c906108c SS |
1057 | } |
1058 | else | |
1059 | { | |
e2e0b3e5 | 1060 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
1061 | } |
1062 | } | |
1063 | ||
c906108c SS |
1064 | /* My replacement for the read system call. |
1065 | Used like `read' but keeps going if `read' returns too soon. */ | |
1066 | ||
1067 | int | |
fba45db2 | 1068 | myread (int desc, char *addr, int len) |
c906108c | 1069 | { |
52f0bd74 | 1070 | int val; |
c906108c SS |
1071 | int orglen = len; |
1072 | ||
1073 | while (len > 0) | |
1074 | { | |
1075 | val = read (desc, addr, len); | |
1076 | if (val < 0) | |
1077 | return val; | |
1078 | if (val == 0) | |
1079 | return orglen - len; | |
1080 | len -= val; | |
1081 | addr += val; | |
1082 | } | |
1083 | return orglen; | |
1084 | } | |
d26e3629 | 1085 | |
c906108c | 1086 | void |
aa1ee363 | 1087 | print_spaces (int n, struct ui_file *file) |
c906108c | 1088 | { |
392a587b | 1089 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1090 | } |
1091 | ||
1092 | /* Print a host address. */ | |
1093 | ||
1094 | void | |
b80c3053 | 1095 | gdb_print_host_address_1 (const void *addr, struct ui_file *stream) |
c906108c | 1096 | { |
ea8992ce | 1097 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 1098 | } |
7c50a931 DE |
1099 | |
1100 | /* See utils.h. */ | |
1101 | ||
1102 | char * | |
1103 | make_hex_string (const gdb_byte *data, size_t length) | |
1104 | { | |
224c3ddb | 1105 | char *result = (char *) xmalloc (length * 2 + 1); |
7c50a931 DE |
1106 | char *p; |
1107 | size_t i; | |
1108 | ||
1109 | p = result; | |
1110 | for (i = 0; i < length; ++i) | |
dc4d6886 | 1111 | p += xsnprintf (p, 3, "%02x", data[i]); |
7c50a931 DE |
1112 | *p = '\0'; |
1113 | return result; | |
1114 | } | |
1115 | ||
c906108c | 1116 | \f |
c5aa993b | 1117 | |
db1ff28b JK |
1118 | /* A cleanup function that calls regfree. */ |
1119 | ||
1120 | static void | |
1121 | do_regfree_cleanup (void *r) | |
1122 | { | |
19ba03f4 | 1123 | regfree ((regex_t *) r); |
db1ff28b JK |
1124 | } |
1125 | ||
1126 | /* Create a new cleanup that frees the compiled regular expression R. */ | |
1127 | ||
1128 | struct cleanup * | |
1129 | make_regfree_cleanup (regex_t *r) | |
1130 | { | |
1131 | return make_cleanup (do_regfree_cleanup, r); | |
1132 | } | |
1133 | ||
1134 | /* Return an xmalloc'd error message resulting from a regular | |
1135 | expression compilation failure. */ | |
1136 | ||
1137 | char * | |
1138 | get_regcomp_error (int code, regex_t *rx) | |
1139 | { | |
1140 | size_t length = regerror (code, rx, NULL, 0); | |
224c3ddb | 1141 | char *result = (char *) xmalloc (length); |
db1ff28b JK |
1142 | |
1143 | regerror (code, rx, result, length); | |
1144 | return result; | |
1145 | } | |
1146 | ||
1147 | /* Compile a regexp and throw an exception on error. This returns a | |
1148 | cleanup to free the resulting pattern on success. RX must not be | |
1149 | NULL. */ | |
1150 | ||
1151 | struct cleanup * | |
1152 | compile_rx_or_error (regex_t *pattern, const char *rx, const char *message) | |
1153 | { | |
1154 | int code; | |
1155 | ||
1156 | gdb_assert (rx != NULL); | |
1157 | ||
1158 | code = regcomp (pattern, rx, REG_NOSUB); | |
1159 | if (code != 0) | |
1160 | { | |
1161 | char *err = get_regcomp_error (code, pattern); | |
1162 | ||
1163 | make_cleanup (xfree, err); | |
1164 | error (("%s: %s"), message, err); | |
1165 | } | |
1166 | ||
1167 | return make_regfree_cleanup (pattern); | |
1168 | } | |
1169 | ||
3eb7562a PA |
1170 | /* A cleanup that simply calls ui_unregister_input_event_handler. */ |
1171 | ||
1172 | static void | |
1173 | ui_unregister_input_event_handler_cleanup (void *ui) | |
1174 | { | |
1175 | ui_unregister_input_event_handler ((struct ui *) ui); | |
1176 | } | |
1177 | ||
1178 | /* Set up to handle input. */ | |
1179 | ||
1180 | static struct cleanup * | |
1181 | prepare_to_handle_input (void) | |
1182 | { | |
1183 | struct cleanup *old_chain; | |
1184 | ||
1185 | old_chain = make_cleanup_restore_target_terminal (); | |
1186 | target_terminal_ours (); | |
1187 | ||
1188 | ui_register_input_event_handler (current_ui); | |
1189 | if (current_ui->prompt_state == PROMPT_BLOCKED) | |
1190 | make_cleanup (ui_unregister_input_event_handler_cleanup, current_ui); | |
1191 | ||
1192 | make_cleanup_override_quit_handler (default_quit_handler); | |
1193 | ||
1194 | return old_chain; | |
1195 | } | |
1196 | ||
db1ff28b JK |
1197 | \f |
1198 | ||
981c7f5a | 1199 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 1200 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
1201 | answer is yes, or default the answer to the specified default |
1202 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
1203 | default answer, or '\0' for no default. | |
cbdeadca JJ |
1204 | CTLSTR is the control string and should end in "? ". It should |
1205 | not say how to answer, because we do that. | |
1206 | ARGS are the arguments passed along with the CTLSTR argument to | |
1207 | printf. */ | |
1208 | ||
a0b31db1 | 1209 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
1210 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
1211 | { | |
cbdeadca JJ |
1212 | int ans2; |
1213 | int retval; | |
1214 | int def_value; | |
1215 | char def_answer, not_def_answer; | |
588dcc3e | 1216 | char *y_string, *n_string, *question, *prompt; |
260c0b2a DE |
1217 | /* Used to add duration we waited for user to respond to |
1218 | prompt_for_continue_wait_time. */ | |
1219 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
80dbc9fd | 1220 | struct cleanup *old_chain; |
cbdeadca JJ |
1221 | |
1222 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
1223 | if (defchar == '\0') |
1224 | { | |
1225 | def_value = 1; | |
1226 | def_answer = 'Y'; | |
1227 | not_def_answer = 'N'; | |
1228 | y_string = "y"; | |
1229 | n_string = "n"; | |
1230 | } | |
1231 | else if (defchar == 'y') | |
cbdeadca JJ |
1232 | { |
1233 | def_value = 1; | |
1234 | def_answer = 'Y'; | |
1235 | not_def_answer = 'N'; | |
1236 | y_string = "[y]"; | |
1237 | n_string = "n"; | |
1238 | } | |
1239 | else | |
1240 | { | |
1241 | def_value = 0; | |
1242 | def_answer = 'N'; | |
1243 | not_def_answer = 'Y'; | |
1244 | y_string = "y"; | |
1245 | n_string = "[n]"; | |
1246 | } | |
1247 | ||
981c7f5a | 1248 | /* Automatically answer the default value if the user did not want |
a502cf95 | 1249 | prompts or the command was issued with the server prefix. */ |
e360902b | 1250 | if (!confirm || server_command) |
981c7f5a DJ |
1251 | return def_value; |
1252 | ||
1253 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 1254 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
1255 | way, important error messages don't get lost when talking to GDB |
1256 | over a pipe. */ | |
268a799a PA |
1257 | if (current_ui->instream != current_ui->stdin_stream |
1258 | || !input_interactive_p (current_ui)) | |
981c7f5a | 1259 | { |
3eb7562a PA |
1260 | old_chain = make_cleanup_restore_target_terminal (); |
1261 | ||
651ce16a | 1262 | target_terminal_ours_for_output (); |
981c7f5a DJ |
1263 | wrap_here (""); |
1264 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1265 | ||
3e43a32a MS |
1266 | printf_filtered (_("(%s or %s) [answered %c; " |
1267 | "input not from terminal]\n"), | |
981c7f5a DJ |
1268 | y_string, n_string, def_answer); |
1269 | gdb_flush (gdb_stdout); | |
1270 | ||
651ce16a | 1271 | do_cleanups (old_chain); |
981c7f5a DJ |
1272 | return def_value; |
1273 | } | |
1274 | ||
9a4105ab | 1275 | if (deprecated_query_hook) |
cbdeadca | 1276 | { |
651ce16a | 1277 | int res; |
cbdeadca | 1278 | |
3eb7562a | 1279 | old_chain = make_cleanup_restore_target_terminal (); |
651ce16a PA |
1280 | res = deprecated_query_hook (ctlstr, args); |
1281 | do_cleanups (old_chain); | |
1282 | return res; | |
1283 | } | |
80dbc9fd | 1284 | |
981c7f5a DJ |
1285 | /* Format the question outside of the loop, to avoid reusing args. */ |
1286 | question = xstrvprintf (ctlstr, args); | |
3eb7562a | 1287 | old_chain = make_cleanup (xfree, question); |
588dcc3e PP |
1288 | prompt = xstrprintf (_("%s%s(%s or %s) %s"), |
1289 | annotation_level > 1 ? "\n\032\032pre-query\n" : "", | |
1290 | question, y_string, n_string, | |
1291 | annotation_level > 1 ? "\n\032\032query\n" : ""); | |
80dbc9fd | 1292 | make_cleanup (xfree, prompt); |
981c7f5a | 1293 | |
260c0b2a DE |
1294 | /* Used for calculating time spend waiting for user. */ |
1295 | gettimeofday (&prompt_started, NULL); | |
1296 | ||
3eb7562a | 1297 | prepare_to_handle_input (); |
651ce16a | 1298 | |
cbdeadca JJ |
1299 | while (1) |
1300 | { | |
588dcc3e | 1301 | char *response, answer; |
cbdeadca | 1302 | |
cbdeadca | 1303 | gdb_flush (gdb_stdout); |
588dcc3e | 1304 | response = gdb_readline_wrapper (prompt); |
cbdeadca | 1305 | |
588dcc3e | 1306 | if (response == NULL) /* C-d */ |
cbdeadca | 1307 | { |
fa3fd85b | 1308 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1309 | retval = def_value; |
1310 | break; | |
1311 | } | |
588dcc3e PP |
1312 | |
1313 | answer = response[0]; | |
1314 | xfree (response); | |
cbdeadca JJ |
1315 | |
1316 | if (answer >= 'a') | |
1317 | answer -= 040; | |
1318 | /* Check answer. For the non-default, the user must specify | |
1319 | the non-default explicitly. */ | |
1320 | if (answer == not_def_answer) | |
1321 | { | |
1322 | retval = !def_value; | |
1323 | break; | |
1324 | } | |
981c7f5a DJ |
1325 | /* Otherwise, if a default was specified, the user may either |
1326 | specify the required input or have it default by entering | |
1327 | nothing. */ | |
1328 | if (answer == def_answer | |
588dcc3e | 1329 | || (defchar != '\0' && answer == '\0')) |
cbdeadca JJ |
1330 | { |
1331 | retval = def_value; | |
1332 | break; | |
1333 | } | |
1334 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1335 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1336 | y_string, n_string); |
1337 | } | |
1338 | ||
260c0b2a DE |
1339 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1340 | gettimeofday (&prompt_ended, NULL); | |
1341 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1342 | timeval_add (&prompt_for_continue_wait_time, | |
1343 | &prompt_for_continue_wait_time, &prompt_delta); | |
1344 | ||
cbdeadca | 1345 | if (annotation_level > 1) |
a3f17187 | 1346 | printf_filtered (("\n\032\032post-query\n")); |
80dbc9fd | 1347 | do_cleanups (old_chain); |
cbdeadca JJ |
1348 | return retval; |
1349 | } | |
1350 | \f | |
1351 | ||
1352 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1353 | answer is yes, or 0 if answer is defaulted. | |
1354 | Takes three args which are given to printf to print the question. | |
1355 | The first, a control string, should end in "? ". | |
1356 | It should not say how to answer, because we do that. */ | |
1357 | ||
1358 | int | |
1359 | nquery (const char *ctlstr, ...) | |
1360 | { | |
1361 | va_list args; | |
899500d6 | 1362 | int ret; |
cbdeadca JJ |
1363 | |
1364 | va_start (args, ctlstr); | |
899500d6 | 1365 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1366 | va_end (args); |
899500d6 | 1367 | return ret; |
cbdeadca JJ |
1368 | } |
1369 | ||
1370 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1371 | answer is yes, or 1 if answer is defaulted. | |
1372 | Takes three args which are given to printf to print the question. | |
1373 | The first, a control string, should end in "? ". | |
1374 | It should not say how to answer, because we do that. */ | |
1375 | ||
1376 | int | |
1377 | yquery (const char *ctlstr, ...) | |
1378 | { | |
1379 | va_list args; | |
899500d6 | 1380 | int ret; |
cbdeadca JJ |
1381 | |
1382 | va_start (args, ctlstr); | |
899500d6 | 1383 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1384 | va_end (args); |
899500d6 | 1385 | return ret; |
cbdeadca JJ |
1386 | } |
1387 | ||
981c7f5a DJ |
1388 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1389 | Takes three args which are given to printf to print the question. | |
1390 | The first, a control string, should end in "? ". | |
1391 | It should not say how to answer, because we do that. */ | |
1392 | ||
1393 | int | |
1394 | query (const char *ctlstr, ...) | |
1395 | { | |
1396 | va_list args; | |
899500d6 | 1397 | int ret; |
981c7f5a DJ |
1398 | |
1399 | va_start (args, ctlstr); | |
899500d6 | 1400 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1401 | va_end (args); |
899500d6 | 1402 | return ret; |
981c7f5a DJ |
1403 | } |
1404 | ||
6c7a06a3 TT |
1405 | /* A helper for parse_escape that converts a host character to a |
1406 | target character. C is the host character. If conversion is | |
1407 | possible, then the target character is stored in *TARGET_C and the | |
1408 | function returns 1. Otherwise, the function returns 0. */ | |
1409 | ||
1410 | static int | |
f870a310 | 1411 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1412 | { |
6c7a06a3 TT |
1413 | struct obstack host_data; |
1414 | char the_char = c; | |
1415 | struct cleanup *cleanups; | |
1416 | int result = 0; | |
234b45d4 | 1417 | |
6c7a06a3 TT |
1418 | obstack_init (&host_data); |
1419 | cleanups = make_cleanup_obstack_free (&host_data); | |
234b45d4 | 1420 | |
f870a310 | 1421 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1422 | (gdb_byte *) &the_char, 1, 1, |
1423 | &host_data, translit_none); | |
6c7a06a3 TT |
1424 | |
1425 | if (obstack_object_size (&host_data) == 1) | |
1426 | { | |
1427 | result = 1; | |
1428 | *target_c = *(char *) obstack_base (&host_data); | |
1429 | } | |
1430 | ||
1431 | do_cleanups (cleanups); | |
1432 | return result; | |
234b45d4 KB |
1433 | } |
1434 | ||
c906108c SS |
1435 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1436 | containing a pointer to the string to parse. That pointer | |
1437 | should point to the character after the \. That pointer | |
1438 | is updated past the characters we use. The value of the | |
1439 | escape sequence is returned. | |
1440 | ||
1441 | A negative value means the sequence \ newline was seen, | |
1442 | which is supposed to be equivalent to nothing at all. | |
1443 | ||
1444 | If \ is followed by a null character, we return a negative | |
1445 | value and leave the string pointer pointing at the null character. | |
1446 | ||
1447 | If \ is followed by 000, we return 0 and leave the string pointer | |
1448 | after the zeros. A value of 0 does not mean end of string. */ | |
1449 | ||
1450 | int | |
d7561cbb | 1451 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1452 | { |
581e13c1 | 1453 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1454 | int c = *(*string_ptr)++; |
e0627e85 | 1455 | |
6c7a06a3 TT |
1456 | switch (c) |
1457 | { | |
8731e58e AC |
1458 | case '\n': |
1459 | return -2; | |
1460 | case 0: | |
1461 | (*string_ptr)--; | |
1462 | return 0; | |
8731e58e AC |
1463 | |
1464 | case '0': | |
1465 | case '1': | |
1466 | case '2': | |
1467 | case '3': | |
1468 | case '4': | |
1469 | case '5': | |
1470 | case '6': | |
1471 | case '7': | |
1472 | { | |
6c7a06a3 | 1473 | int i = host_hex_value (c); |
aa1ee363 | 1474 | int count = 0; |
8731e58e AC |
1475 | while (++count < 3) |
1476 | { | |
5cb316ef | 1477 | c = (**string_ptr); |
6c7a06a3 | 1478 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1479 | { |
5cb316ef | 1480 | (*string_ptr)++; |
8731e58e | 1481 | i *= 8; |
6c7a06a3 | 1482 | i += host_hex_value (c); |
8731e58e AC |
1483 | } |
1484 | else | |
1485 | { | |
8731e58e AC |
1486 | break; |
1487 | } | |
1488 | } | |
1489 | return i; | |
1490 | } | |
6c7a06a3 TT |
1491 | |
1492 | case 'a': | |
1493 | c = '\a'; | |
1494 | break; | |
1495 | case 'b': | |
1496 | c = '\b'; | |
1497 | break; | |
1498 | case 'f': | |
1499 | c = '\f'; | |
1500 | break; | |
1501 | case 'n': | |
1502 | c = '\n'; | |
1503 | break; | |
1504 | case 'r': | |
1505 | c = '\r'; | |
1506 | break; | |
1507 | case 't': | |
1508 | c = '\t'; | |
1509 | break; | |
1510 | case 'v': | |
1511 | c = '\v'; | |
1512 | break; | |
1513 | ||
1514 | default: | |
1515 | break; | |
1516 | } | |
1517 | ||
f870a310 | 1518 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1519 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1520 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1521 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1522 | return target_char; |
c906108c SS |
1523 | } |
1524 | \f | |
1525 | /* Print the character C on STREAM as part of the contents of a literal | |
1526 | string whose delimiter is QUOTER. Note that this routine should only | |
f9acce4a | 1527 | be called for printing things which are independent of the language |
6ef284bd SM |
1528 | of the program being debugged. |
1529 | ||
1530 | printchar will normally escape backslashes and instances of QUOTER. If | |
1531 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1532 | As a side effect, if you pass the backslash character as the QUOTER, | |
1533 | printchar will escape backslashes as usual, but not any other quoting | |
1534 | character. */ | |
c906108c | 1535 | |
43e526b9 | 1536 | static void |
74f832da | 1537 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1538 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1539 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1540 | { |
c906108c SS |
1541 | c &= 0xFF; /* Avoid sign bit follies */ |
1542 | ||
c5aa993b JM |
1543 | if (c < 0x20 || /* Low control chars */ |
1544 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1545 | (sevenbit_strings && c >= 0x80)) | |
1546 | { /* high order bit set */ | |
1547 | switch (c) | |
1548 | { | |
1549 | case '\n': | |
43e526b9 | 1550 | do_fputs ("\\n", stream); |
c5aa993b JM |
1551 | break; |
1552 | case '\b': | |
43e526b9 | 1553 | do_fputs ("\\b", stream); |
c5aa993b JM |
1554 | break; |
1555 | case '\t': | |
43e526b9 | 1556 | do_fputs ("\\t", stream); |
c5aa993b JM |
1557 | break; |
1558 | case '\f': | |
43e526b9 | 1559 | do_fputs ("\\f", stream); |
c5aa993b JM |
1560 | break; |
1561 | case '\r': | |
43e526b9 | 1562 | do_fputs ("\\r", stream); |
c5aa993b JM |
1563 | break; |
1564 | case '\033': | |
43e526b9 | 1565 | do_fputs ("\\e", stream); |
c5aa993b JM |
1566 | break; |
1567 | case '\007': | |
43e526b9 | 1568 | do_fputs ("\\a", stream); |
c5aa993b JM |
1569 | break; |
1570 | default: | |
43e526b9 | 1571 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1572 | break; |
1573 | } | |
1574 | } | |
1575 | else | |
1576 | { | |
6ef284bd | 1577 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1578 | do_fputs ("\\", stream); |
1579 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1580 | } |
c906108c | 1581 | } |
43e526b9 JM |
1582 | |
1583 | /* Print the character C on STREAM as part of the contents of a | |
1584 | literal string whose delimiter is QUOTER. Note that these routines | |
1585 | should only be call for printing things which are independent of | |
581e13c1 | 1586 | the language of the program being debugged. */ |
43e526b9 JM |
1587 | |
1588 | void | |
fba45db2 | 1589 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1590 | { |
1591 | while (*str) | |
1592 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1593 | } | |
1594 | ||
1595 | void | |
fba45db2 | 1596 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1597 | { |
1598 | while (*str) | |
1599 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1600 | } | |
1601 | ||
0876f84a DJ |
1602 | void |
1603 | fputstrn_filtered (const char *str, int n, int quoter, | |
1604 | struct ui_file *stream) | |
1605 | { | |
1606 | int i; | |
e0627e85 | 1607 | |
0876f84a DJ |
1608 | for (i = 0; i < n; i++) |
1609 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1610 | } | |
1611 | ||
43e526b9 | 1612 | void |
8731e58e AC |
1613 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1614 | struct ui_file *stream) | |
43e526b9 JM |
1615 | { |
1616 | int i; | |
5d502164 | 1617 | |
43e526b9 JM |
1618 | for (i = 0; i < n; i++) |
1619 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1620 | } | |
c906108c | 1621 | \f |
c5aa993b | 1622 | |
c906108c SS |
1623 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1624 | static unsigned int lines_per_page; | |
920d2a44 AC |
1625 | static void |
1626 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1627 | struct cmd_list_element *c, const char *value) | |
1628 | { | |
3e43a32a MS |
1629 | fprintf_filtered (file, |
1630 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1631 | value); |
1632 | } | |
eb0d3137 | 1633 | |
cbfbd72a | 1634 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1635 | static unsigned int chars_per_line; |
920d2a44 AC |
1636 | static void |
1637 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1638 | struct cmd_list_element *c, const char *value) | |
1639 | { | |
3e43a32a MS |
1640 | fprintf_filtered (file, |
1641 | _("Number of characters gdb thinks " | |
1642 | "are in a line is %s.\n"), | |
920d2a44 AC |
1643 | value); |
1644 | } | |
eb0d3137 | 1645 | |
c906108c SS |
1646 | /* Current count of lines printed on this page, chars on this line. */ |
1647 | static unsigned int lines_printed, chars_printed; | |
1648 | ||
1649 | /* Buffer and start column of buffered text, for doing smarter word- | |
1650 | wrapping. When someone calls wrap_here(), we start buffering output | |
1651 | that comes through fputs_filtered(). If we see a newline, we just | |
1652 | spit it out and forget about the wrap_here(). If we see another | |
1653 | wrap_here(), we spit it out and remember the newer one. If we see | |
1654 | the end of the line, we spit out a newline, the indent, and then | |
1655 | the buffered output. */ | |
1656 | ||
1657 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1658 | are waiting to be output (they have already been counted in chars_printed). | |
1659 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1660 | static char *wrap_buffer; | |
1661 | ||
1662 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1663 | static char *wrap_pointer; | |
1664 | ||
1665 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1666 | is non-zero. */ | |
1667 | static char *wrap_indent; | |
1668 | ||
1669 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1670 | is not in effect. */ | |
1671 | static int wrap_column; | |
c906108c | 1672 | \f |
c5aa993b | 1673 | |
eb0d3137 MK |
1674 | /* Inialize the number of lines per page and chars per line. */ |
1675 | ||
c906108c | 1676 | void |
fba45db2 | 1677 | init_page_info (void) |
c906108c | 1678 | { |
5da1313b JK |
1679 | if (batch_flag) |
1680 | { | |
1681 | lines_per_page = UINT_MAX; | |
1682 | chars_per_line = UINT_MAX; | |
1683 | } | |
1684 | else | |
c906108c | 1685 | #if defined(TUI) |
5ecb1806 | 1686 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1687 | #endif |
1688 | { | |
eb0d3137 | 1689 | int rows, cols; |
c906108c | 1690 | |
ec145965 EZ |
1691 | #if defined(__GO32__) |
1692 | rows = ScreenRows (); | |
1693 | cols = ScreenCols (); | |
1694 | lines_per_page = rows; | |
1695 | chars_per_line = cols; | |
1696 | #else | |
eb0d3137 MK |
1697 | /* Make sure Readline has initialized its terminal settings. */ |
1698 | rl_reset_terminal (NULL); | |
c906108c | 1699 | |
eb0d3137 MK |
1700 | /* Get the screen size from Readline. */ |
1701 | rl_get_screen_size (&rows, &cols); | |
1702 | lines_per_page = rows; | |
1703 | chars_per_line = cols; | |
c906108c | 1704 | |
1a66331e PM |
1705 | /* Readline should have fetched the termcap entry for us. |
1706 | Only try to use tgetnum function if rl_get_screen_size | |
1707 | did not return a useful value. */ | |
1708 | if (((rows <= 0) && (tgetnum ("li") < 0)) | |
e681cf3f EZ |
1709 | /* Also disable paging if inside Emacs. $EMACS was used |
1710 | before Emacs v25.1, $INSIDE_EMACS is used since then. */ | |
1711 | || getenv ("EMACS") || getenv ("INSIDE_EMACS")) | |
eb0d3137 | 1712 | { |
1a66331e PM |
1713 | /* The number of lines per page is not mentioned in the terminal |
1714 | description or EMACS evironment variable is set. This probably | |
1715 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1716 | lines_per_page = UINT_MAX; |
1717 | } | |
c906108c | 1718 | |
c906108c | 1719 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1720 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1721 | lines_per_page = UINT_MAX; |
eb0d3137 | 1722 | #endif |
ec145965 | 1723 | } |
eb0d3137 | 1724 | |
24b73f8e PP |
1725 | /* We handle SIGWINCH ourselves. */ |
1726 | rl_catch_sigwinch = 0; | |
1727 | ||
eb0d3137 | 1728 | set_screen_size (); |
c5aa993b | 1729 | set_width (); |
c906108c SS |
1730 | } |
1731 | ||
2437fd32 GB |
1732 | /* Return nonzero if filtered printing is initialized. */ |
1733 | int | |
1734 | filtered_printing_initialized (void) | |
1735 | { | |
1736 | return wrap_buffer != NULL; | |
1737 | } | |
1738 | ||
5da1313b JK |
1739 | /* Helper for make_cleanup_restore_page_info. */ |
1740 | ||
1741 | static void | |
1742 | do_restore_page_info_cleanup (void *arg) | |
1743 | { | |
1744 | set_screen_size (); | |
1745 | set_width (); | |
1746 | } | |
1747 | ||
1748 | /* Provide cleanup for restoring the terminal size. */ | |
1749 | ||
1750 | struct cleanup * | |
1751 | make_cleanup_restore_page_info (void) | |
1752 | { | |
1753 | struct cleanup *back_to; | |
1754 | ||
1755 | back_to = make_cleanup (do_restore_page_info_cleanup, NULL); | |
1756 | make_cleanup_restore_uinteger (&lines_per_page); | |
1757 | make_cleanup_restore_uinteger (&chars_per_line); | |
1758 | ||
1759 | return back_to; | |
1760 | } | |
1761 | ||
1762 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. | |
1763 | Provide cleanup for restoring the original state. */ | |
1764 | ||
1765 | struct cleanup * | |
1766 | set_batch_flag_and_make_cleanup_restore_page_info (void) | |
1767 | { | |
1768 | struct cleanup *back_to = make_cleanup_restore_page_info (); | |
1769 | ||
1770 | make_cleanup_restore_integer (&batch_flag); | |
1771 | batch_flag = 1; | |
1772 | init_page_info (); | |
1773 | ||
1774 | return back_to; | |
1775 | } | |
1776 | ||
eb0d3137 MK |
1777 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1778 | ||
1779 | static void | |
1780 | set_screen_size (void) | |
1781 | { | |
1782 | int rows = lines_per_page; | |
1783 | int cols = chars_per_line; | |
1784 | ||
1785 | if (rows <= 0) | |
1786 | rows = INT_MAX; | |
1787 | ||
1788 | if (cols <= 0) | |
0caa462c | 1789 | cols = INT_MAX; |
eb0d3137 MK |
1790 | |
1791 | /* Update Readline's idea of the terminal size. */ | |
1792 | rl_set_screen_size (rows, cols); | |
1793 | } | |
1794 | ||
1795 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1796 | CHARS_PER_LINE. */ | |
1797 | ||
c906108c | 1798 | static void |
fba45db2 | 1799 | set_width (void) |
c906108c SS |
1800 | { |
1801 | if (chars_per_line == 0) | |
c5aa993b | 1802 | init_page_info (); |
c906108c SS |
1803 | |
1804 | if (!wrap_buffer) | |
1805 | { | |
1806 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1807 | wrap_buffer[0] = '\0'; | |
1808 | } | |
1809 | else | |
1810 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1811 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1812 | } |
1813 | ||
c5aa993b | 1814 | static void |
fba45db2 | 1815 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1816 | { |
eb0d3137 | 1817 | set_screen_size (); |
c906108c SS |
1818 | set_width (); |
1819 | } | |
1820 | ||
eb0d3137 MK |
1821 | static void |
1822 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1823 | { | |
1824 | set_screen_size (); | |
1825 | } | |
1826 | ||
d6e5e7f7 PP |
1827 | /* See utils.h. */ |
1828 | ||
1829 | void | |
1830 | set_screen_width_and_height (int width, int height) | |
1831 | { | |
1832 | lines_per_page = height; | |
1833 | chars_per_line = width; | |
1834 | ||
1835 | set_screen_size (); | |
1836 | set_width (); | |
1837 | } | |
1838 | ||
c906108c | 1839 | /* Wait, so the user can read what's on the screen. Prompt the user |
720d2e96 PA |
1840 | to continue by pressing RETURN. 'q' is also provided because |
1841 | telling users what to do in the prompt is more user-friendly than | |
1842 | expecting them to think of Ctrl-C/SIGINT. */ | |
c906108c SS |
1843 | |
1844 | static void | |
fba45db2 | 1845 | prompt_for_continue (void) |
c906108c SS |
1846 | { |
1847 | char *ignore; | |
1848 | char cont_prompt[120]; | |
260c0b2a DE |
1849 | /* Used to add duration we waited for user to respond to |
1850 | prompt_for_continue_wait_time. */ | |
1851 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
80dbc9fd | 1852 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
260c0b2a DE |
1853 | |
1854 | gettimeofday (&prompt_started, NULL); | |
c906108c SS |
1855 | |
1856 | if (annotation_level > 1) | |
a3f17187 | 1857 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1858 | |
1859 | strcpy (cont_prompt, | |
1860 | "---Type <return> to continue, or q <return> to quit---"); | |
1861 | if (annotation_level > 1) | |
1862 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1863 | ||
720d2e96 PA |
1864 | /* We must do this *before* we call gdb_readline_wrapper, else it |
1865 | will eventually call us -- thinking that we're trying to print | |
1866 | beyond the end of the screen. */ | |
c906108c SS |
1867 | reinitialize_more_filter (); |
1868 | ||
3eb7562a | 1869 | prepare_to_handle_input (); |
82584158 | 1870 | |
720d2e96 PA |
1871 | /* Call gdb_readline_wrapper, not readline, in order to keep an |
1872 | event loop running. */ | |
b4f5539f | 1873 | ignore = gdb_readline_wrapper (cont_prompt); |
80dbc9fd | 1874 | make_cleanup (xfree, ignore); |
c906108c | 1875 | |
260c0b2a DE |
1876 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1877 | gettimeofday (&prompt_ended, NULL); | |
1878 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1879 | timeval_add (&prompt_for_continue_wait_time, | |
1880 | &prompt_for_continue_wait_time, &prompt_delta); | |
1881 | ||
c906108c | 1882 | if (annotation_level > 1) |
a3f17187 | 1883 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c | 1884 | |
80dbc9fd | 1885 | if (ignore != NULL) |
c906108c SS |
1886 | { |
1887 | char *p = ignore; | |
5d502164 | 1888 | |
c906108c SS |
1889 | while (*p == ' ' || *p == '\t') |
1890 | ++p; | |
1891 | if (p[0] == 'q') | |
1690b616 SL |
1892 | /* Do not call quit here; there is no possibility of SIGINT. */ |
1893 | throw_quit ("Quit"); | |
c906108c | 1894 | } |
c906108c SS |
1895 | |
1896 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1897 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1898 | reinitialize_more_filter (); | |
1899 | ||
581e13c1 | 1900 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
80dbc9fd PA |
1901 | |
1902 | do_cleanups (old_chain); | |
c906108c SS |
1903 | } |
1904 | ||
bd712aed DE |
1905 | /* Initalize timer to keep track of how long we waited for the user. */ |
1906 | ||
1907 | void | |
1908 | reset_prompt_for_continue_wait_time (void) | |
1909 | { | |
1910 | static const struct timeval zero_timeval = { 0 }; | |
1911 | ||
1912 | prompt_for_continue_wait_time = zero_timeval; | |
1913 | } | |
1914 | ||
1915 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1916 | ||
1917 | struct timeval | |
1918 | get_prompt_for_continue_wait_time (void) | |
1919 | { | |
1920 | return prompt_for_continue_wait_time; | |
1921 | } | |
1922 | ||
c906108c SS |
1923 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1924 | ||
1925 | void | |
fba45db2 | 1926 | reinitialize_more_filter (void) |
c906108c SS |
1927 | { |
1928 | lines_printed = 0; | |
1929 | chars_printed = 0; | |
1930 | } | |
1931 | ||
1932 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1933 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1934 | If INDENT is non-null, it is a string to be printed to indent the |
1935 | wrapped part on the next line. INDENT must remain accessible until | |
1936 | the next call to wrap_here() or until a newline is printed through | |
1937 | fputs_filtered(). | |
1938 | ||
1939 | If the line is already overfull, we immediately print a newline and | |
1940 | the indentation, and disable further wrapping. | |
1941 | ||
1942 | If we don't know the width of lines, but we know the page height, | |
1943 | we must not wrap words, but should still keep track of newlines | |
1944 | that were explicitly printed. | |
1945 | ||
1946 | INDENT should not contain tabs, as that will mess up the char count | |
1947 | on the next line. FIXME. | |
1948 | ||
1949 | This routine is guaranteed to force out any output which has been | |
1950 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1951 | used to force out output from the wrap_buffer. */ | |
1952 | ||
1953 | void | |
fba45db2 | 1954 | wrap_here (char *indent) |
c906108c | 1955 | { |
581e13c1 | 1956 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1957 | if (!wrap_buffer) |
3e43a32a MS |
1958 | internal_error (__FILE__, __LINE__, |
1959 | _("failed internal consistency check")); | |
c906108c SS |
1960 | |
1961 | if (wrap_buffer[0]) | |
1962 | { | |
1963 | *wrap_pointer = '\0'; | |
1964 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1965 | } | |
1966 | wrap_pointer = wrap_buffer; | |
1967 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1968 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1969 | { |
1970 | wrap_column = 0; | |
1971 | } | |
1972 | else if (chars_printed >= chars_per_line) | |
1973 | { | |
1974 | puts_filtered ("\n"); | |
1975 | if (indent != NULL) | |
1976 | puts_filtered (indent); | |
1977 | wrap_column = 0; | |
1978 | } | |
1979 | else | |
1980 | { | |
1981 | wrap_column = chars_printed; | |
1982 | if (indent == NULL) | |
1983 | wrap_indent = ""; | |
1984 | else | |
1985 | wrap_indent = indent; | |
1986 | } | |
1987 | } | |
1988 | ||
4a351cef | 1989 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1990 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1991 | right or left justified in the column. Never prints |
1992 | trailing spaces. String should never be longer than | |
1993 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1994 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1995 | |
1996 | void | |
1997 | puts_filtered_tabular (char *string, int width, int right) | |
1998 | { | |
1999 | int spaces = 0; | |
2000 | int stringlen; | |
2001 | char *spacebuf; | |
2002 | ||
2003 | gdb_assert (chars_per_line > 0); | |
2004 | if (chars_per_line == UINT_MAX) | |
2005 | { | |
2006 | fputs_filtered (string, gdb_stdout); | |
2007 | fputs_filtered ("\n", gdb_stdout); | |
2008 | return; | |
2009 | } | |
2010 | ||
2011 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
2012 | fputs_filtered ("\n", gdb_stdout); | |
2013 | ||
2014 | if (width >= chars_per_line) | |
2015 | width = chars_per_line - 1; | |
2016 | ||
2017 | stringlen = strlen (string); | |
2018 | ||
2019 | if (chars_printed > 0) | |
2020 | spaces = width - (chars_printed - 1) % width - 1; | |
2021 | if (right) | |
2022 | spaces += width - stringlen; | |
2023 | ||
224c3ddb | 2024 | spacebuf = (char *) alloca (spaces + 1); |
4a351cef AF |
2025 | spacebuf[spaces] = '\0'; |
2026 | while (spaces--) | |
2027 | spacebuf[spaces] = ' '; | |
2028 | ||
2029 | fputs_filtered (spacebuf, gdb_stdout); | |
2030 | fputs_filtered (string, gdb_stdout); | |
2031 | } | |
2032 | ||
2033 | ||
c906108c | 2034 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 2035 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 2036 | any pending output for the current line, flush it and start a new |
581e13c1 | 2037 | line. Otherwise do nothing. */ |
c906108c SS |
2038 | |
2039 | void | |
fba45db2 | 2040 | begin_line (void) |
c906108c SS |
2041 | { |
2042 | if (chars_printed > 0) | |
2043 | { | |
2044 | puts_filtered ("\n"); | |
2045 | } | |
2046 | } | |
2047 | ||
ac9a91a7 | 2048 | |
c906108c SS |
2049 | /* Like fputs but if FILTER is true, pause after every screenful. |
2050 | ||
2051 | Regardless of FILTER can wrap at points other than the final | |
2052 | character of a line. | |
2053 | ||
2054 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
2055 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
2056 | anything. | |
2057 | ||
2058 | Note that a longjmp to top level may occur in this routine (only if | |
2059 | FILTER is true) (since prompt_for_continue may do so) so this | |
2060 | routine should not be called when cleanups are not in place. */ | |
2061 | ||
2062 | static void | |
fba45db2 KB |
2063 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
2064 | int filter) | |
c906108c SS |
2065 | { |
2066 | const char *lineptr; | |
2067 | ||
2068 | if (linebuffer == 0) | |
2069 | return; | |
2070 | ||
2071 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 2072 | if (stream != gdb_stdout |
b2e7f004 JK |
2073 | || !pagination_enabled |
2074 | || batch_flag | |
390a8aca | 2075 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 2076 | || top_level_interpreter () == NULL |
390a8aca | 2077 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
c906108c SS |
2078 | { |
2079 | fputs_unfiltered (linebuffer, stream); | |
2080 | return; | |
2081 | } | |
2082 | ||
2083 | /* Go through and output each character. Show line extension | |
2084 | when this is necessary; prompt user for new page when this is | |
2085 | necessary. */ | |
c5aa993b | 2086 | |
c906108c SS |
2087 | lineptr = linebuffer; |
2088 | while (*lineptr) | |
2089 | { | |
2090 | /* Possible new page. */ | |
8731e58e | 2091 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
2092 | prompt_for_continue (); |
2093 | ||
2094 | while (*lineptr && *lineptr != '\n') | |
2095 | { | |
2096 | /* Print a single line. */ | |
2097 | if (*lineptr == '\t') | |
2098 | { | |
2099 | if (wrap_column) | |
2100 | *wrap_pointer++ = '\t'; | |
2101 | else | |
2102 | fputc_unfiltered ('\t', stream); | |
2103 | /* Shifting right by 3 produces the number of tab stops | |
2104 | we have already passed, and then adding one and | |
c5aa993b | 2105 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
2106 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
2107 | lineptr++; | |
2108 | } | |
2109 | else | |
2110 | { | |
2111 | if (wrap_column) | |
2112 | *wrap_pointer++ = *lineptr; | |
2113 | else | |
c5aa993b | 2114 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
2115 | chars_printed++; |
2116 | lineptr++; | |
2117 | } | |
c5aa993b | 2118 | |
c906108c SS |
2119 | if (chars_printed >= chars_per_line) |
2120 | { | |
2121 | unsigned int save_chars = chars_printed; | |
2122 | ||
2123 | chars_printed = 0; | |
2124 | lines_printed++; | |
2125 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
2126 | if chars_per_line is right, we probably just overflowed |
2127 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
2128 | if (wrap_column) |
2129 | fputc_unfiltered ('\n', stream); | |
2130 | ||
2131 | /* Possible new page. */ | |
2132 | if (lines_printed >= lines_per_page - 1) | |
2133 | prompt_for_continue (); | |
2134 | ||
581e13c1 | 2135 | /* Now output indentation and wrapped string. */ |
c906108c SS |
2136 | if (wrap_column) |
2137 | { | |
2138 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
2139 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
2140 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
2141 | /* FIXME, this strlen is what prevents wrap_indent from |
2142 | containing tabs. However, if we recurse to print it | |
2143 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 2144 | longer than (the user settable) chars_per_line. |
c906108c SS |
2145 | Note also that this can set chars_printed > chars_per_line |
2146 | if we are printing a long string. */ | |
2147 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 2148 | + (save_chars - wrap_column); |
c906108c SS |
2149 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
2150 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
2151 | wrap_column = 0; /* And disable fancy wrap */ |
2152 | } | |
c906108c SS |
2153 | } |
2154 | } | |
2155 | ||
2156 | if (*lineptr == '\n') | |
2157 | { | |
2158 | chars_printed = 0; | |
3e43a32a MS |
2159 | wrap_here ((char *) 0); /* Spit out chars, cancel |
2160 | further wraps. */ | |
c906108c SS |
2161 | lines_printed++; |
2162 | fputc_unfiltered ('\n', stream); | |
2163 | lineptr++; | |
2164 | } | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | void | |
fba45db2 | 2169 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
2170 | { |
2171 | fputs_maybe_filtered (linebuffer, stream, 1); | |
2172 | } | |
2173 | ||
2174 | int | |
fba45db2 | 2175 | putchar_unfiltered (int c) |
c906108c | 2176 | { |
11cf8741 | 2177 | char buf = c; |
e0627e85 | 2178 | |
d9fcf2fb | 2179 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
2180 | return c; |
2181 | } | |
2182 | ||
d1f4cff8 AC |
2183 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
2184 | May return nonlocally. */ | |
2185 | ||
2186 | int | |
2187 | putchar_filtered (int c) | |
2188 | { | |
2189 | return fputc_filtered (c, gdb_stdout); | |
2190 | } | |
2191 | ||
c906108c | 2192 | int |
fba45db2 | 2193 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2194 | { |
11cf8741 | 2195 | char buf = c; |
e0627e85 | 2196 | |
d9fcf2fb | 2197 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2198 | return c; |
2199 | } | |
2200 | ||
2201 | int | |
fba45db2 | 2202 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2203 | { |
2204 | char buf[2]; | |
2205 | ||
2206 | buf[0] = c; | |
2207 | buf[1] = 0; | |
2208 | fputs_filtered (buf, stream); | |
2209 | return c; | |
2210 | } | |
2211 | ||
2212 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2213 | characters in printable fashion. */ | |
2214 | ||
2215 | void | |
fba45db2 | 2216 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2217 | { |
2218 | int ch; | |
2219 | ||
2220 | /* Print prefix and suffix after each line. */ | |
2221 | static int new_line = 1; | |
2222 | static int return_p = 0; | |
2223 | static char *prev_prefix = ""; | |
2224 | static char *prev_suffix = ""; | |
2225 | ||
2226 | if (*string == '\n') | |
2227 | return_p = 0; | |
2228 | ||
2229 | /* If the prefix is changing, print the previous suffix, a new line, | |
2230 | and the new prefix. */ | |
c5aa993b | 2231 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2232 | { |
9846de1b JM |
2233 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2234 | fputs_unfiltered ("\n", gdb_stdlog); | |
2235 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2236 | } |
2237 | ||
2238 | /* Print prefix if we printed a newline during the previous call. */ | |
2239 | if (new_line) | |
2240 | { | |
2241 | new_line = 0; | |
9846de1b | 2242 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2243 | } |
2244 | ||
2245 | prev_prefix = prefix; | |
2246 | prev_suffix = suffix; | |
2247 | ||
2248 | /* Output characters in a printable format. */ | |
2249 | while ((ch = *string++) != '\0') | |
2250 | { | |
2251 | switch (ch) | |
c5aa993b | 2252 | { |
c906108c SS |
2253 | default: |
2254 | if (isprint (ch)) | |
9846de1b | 2255 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2256 | |
2257 | else | |
9846de1b | 2258 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2259 | break; |
2260 | ||
c5aa993b JM |
2261 | case '\\': |
2262 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2263 | break; | |
2264 | case '\b': | |
2265 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2266 | break; | |
2267 | case '\f': | |
2268 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2269 | break; | |
2270 | case '\n': | |
2271 | new_line = 1; | |
2272 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2273 | break; | |
2274 | case '\r': | |
2275 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2276 | break; | |
2277 | case '\t': | |
2278 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2279 | break; | |
2280 | case '\v': | |
2281 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2282 | break; | |
2283 | } | |
c906108c SS |
2284 | |
2285 | return_p = ch == '\r'; | |
2286 | } | |
2287 | ||
2288 | /* Print suffix if we printed a newline. */ | |
2289 | if (new_line) | |
2290 | { | |
9846de1b JM |
2291 | fputs_unfiltered (suffix, gdb_stdlog); |
2292 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2293 | } |
2294 | } | |
2295 | ||
2296 | ||
2297 | /* Print a variable number of ARGS using format FORMAT. If this | |
2298 | information is going to put the amount written (since the last call | |
2299 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2300 | call prompt_for_continue to get the users permision to continue. | |
2301 | ||
2302 | Unlike fprintf, this function does not return a value. | |
2303 | ||
2304 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2305 | fprintf (takes a stream to write on), and printf (the usual). | |
2306 | ||
2307 | Note also that a longjmp to top level may occur in this routine | |
2308 | (since prompt_for_continue may do so) so this routine should not be | |
2309 | called when cleanups are not in place. */ | |
2310 | ||
2311 | static void | |
fba45db2 KB |
2312 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2313 | va_list args, int filter) | |
c906108c SS |
2314 | { |
2315 | char *linebuffer; | |
2316 | struct cleanup *old_cleanups; | |
2317 | ||
e623b504 | 2318 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2319 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2320 | fputs_maybe_filtered (linebuffer, stream, filter); |
2321 | do_cleanups (old_cleanups); | |
2322 | } | |
2323 | ||
2324 | ||
2325 | void | |
fba45db2 | 2326 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2327 | { |
2328 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2329 | } | |
2330 | ||
2331 | void | |
fba45db2 | 2332 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2333 | { |
2334 | char *linebuffer; | |
2335 | struct cleanup *old_cleanups; | |
2336 | ||
e623b504 | 2337 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2338 | old_cleanups = make_cleanup (xfree, linebuffer); |
75feb17d DJ |
2339 | if (debug_timestamp && stream == gdb_stdlog) |
2340 | { | |
2341 | struct timeval tm; | |
2342 | char *timestamp; | |
6e5abd65 | 2343 | int len, need_nl; |
75feb17d DJ |
2344 | |
2345 | gettimeofday (&tm, NULL); | |
6e5abd65 PA |
2346 | |
2347 | len = strlen (linebuffer); | |
2348 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); | |
2349 | ||
2350 | timestamp = xstrprintf ("%ld:%ld %s%s", | |
2351 | (long) tm.tv_sec, (long) tm.tv_usec, | |
2352 | linebuffer, | |
2353 | need_nl ? "\n": ""); | |
75feb17d DJ |
2354 | make_cleanup (xfree, timestamp); |
2355 | fputs_unfiltered (timestamp, stream); | |
2356 | } | |
6e5abd65 PA |
2357 | else |
2358 | fputs_unfiltered (linebuffer, stream); | |
c906108c SS |
2359 | do_cleanups (old_cleanups); |
2360 | } | |
2361 | ||
2362 | void | |
fba45db2 | 2363 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2364 | { |
2365 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2366 | } | |
2367 | ||
2368 | void | |
fba45db2 | 2369 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2370 | { |
2371 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2372 | } | |
2373 | ||
c906108c | 2374 | void |
8731e58e | 2375 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2376 | { |
2377 | va_list args; | |
e0627e85 | 2378 | |
c906108c | 2379 | va_start (args, format); |
c906108c SS |
2380 | vfprintf_filtered (stream, format, args); |
2381 | va_end (args); | |
2382 | } | |
2383 | ||
c906108c | 2384 | void |
8731e58e | 2385 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2386 | { |
2387 | va_list args; | |
e0627e85 | 2388 | |
c906108c | 2389 | va_start (args, format); |
c906108c SS |
2390 | vfprintf_unfiltered (stream, format, args); |
2391 | va_end (args); | |
2392 | } | |
2393 | ||
2394 | /* Like fprintf_filtered, but prints its result indented. | |
2395 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2396 | ||
c906108c | 2397 | void |
8731e58e AC |
2398 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2399 | ...) | |
c906108c SS |
2400 | { |
2401 | va_list args; | |
e0627e85 | 2402 | |
c906108c | 2403 | va_start (args, format); |
c906108c SS |
2404 | print_spaces_filtered (spaces, stream); |
2405 | ||
2406 | vfprintf_filtered (stream, format, args); | |
2407 | va_end (args); | |
2408 | } | |
2409 | ||
2410 | ||
c906108c | 2411 | void |
8731e58e | 2412 | printf_filtered (const char *format, ...) |
c906108c SS |
2413 | { |
2414 | va_list args; | |
e0627e85 | 2415 | |
c906108c | 2416 | va_start (args, format); |
c906108c SS |
2417 | vfprintf_filtered (gdb_stdout, format, args); |
2418 | va_end (args); | |
2419 | } | |
2420 | ||
2421 | ||
c906108c | 2422 | void |
8731e58e | 2423 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2424 | { |
2425 | va_list args; | |
e0627e85 | 2426 | |
c906108c | 2427 | va_start (args, format); |
c906108c SS |
2428 | vfprintf_unfiltered (gdb_stdout, format, args); |
2429 | va_end (args); | |
2430 | } | |
2431 | ||
2432 | /* Like printf_filtered, but prints it's result indented. | |
2433 | Called as printfi_filtered (spaces, format, ...); */ | |
2434 | ||
c906108c | 2435 | void |
8731e58e | 2436 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2437 | { |
2438 | va_list args; | |
e0627e85 | 2439 | |
c906108c | 2440 | va_start (args, format); |
c906108c SS |
2441 | print_spaces_filtered (spaces, gdb_stdout); |
2442 | vfprintf_filtered (gdb_stdout, format, args); | |
2443 | va_end (args); | |
2444 | } | |
2445 | ||
2446 | /* Easy -- but watch out! | |
2447 | ||
2448 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2449 | This one doesn't, and had better not! */ | |
2450 | ||
2451 | void | |
fba45db2 | 2452 | puts_filtered (const char *string) |
c906108c SS |
2453 | { |
2454 | fputs_filtered (string, gdb_stdout); | |
2455 | } | |
2456 | ||
2457 | void | |
fba45db2 | 2458 | puts_unfiltered (const char *string) |
c906108c SS |
2459 | { |
2460 | fputs_unfiltered (string, gdb_stdout); | |
2461 | } | |
2462 | ||
2463 | /* Return a pointer to N spaces and a null. The pointer is good | |
2464 | until the next call to here. */ | |
2465 | char * | |
fba45db2 | 2466 | n_spaces (int n) |
c906108c | 2467 | { |
392a587b JM |
2468 | char *t; |
2469 | static char *spaces = 0; | |
2470 | static int max_spaces = -1; | |
c906108c SS |
2471 | |
2472 | if (n > max_spaces) | |
2473 | { | |
2474 | if (spaces) | |
b8c9b27d | 2475 | xfree (spaces); |
c5aa993b JM |
2476 | spaces = (char *) xmalloc (n + 1); |
2477 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2478 | *--t = ' '; |
2479 | spaces[n] = '\0'; | |
2480 | max_spaces = n; | |
2481 | } | |
2482 | ||
2483 | return spaces + max_spaces - n; | |
2484 | } | |
2485 | ||
2486 | /* Print N spaces. */ | |
2487 | void | |
fba45db2 | 2488 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2489 | { |
2490 | fputs_filtered (n_spaces (n), stream); | |
2491 | } | |
2492 | \f | |
4a351cef | 2493 | /* C++/ObjC demangler stuff. */ |
c906108c | 2494 | |
389e51db AC |
2495 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2496 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2497 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2498 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2499 | |
2500 | void | |
0d5cff50 | 2501 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2502 | enum language lang, int arg_mode) |
c906108c SS |
2503 | { |
2504 | char *demangled; | |
2505 | ||
2506 | if (name != NULL) | |
2507 | { | |
2508 | /* If user wants to see raw output, no problem. */ | |
2509 | if (!demangle) | |
2510 | { | |
2511 | fputs_filtered (name, stream); | |
2512 | } | |
2513 | else | |
2514 | { | |
9a3d7dfd | 2515 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2516 | fputs_filtered (demangled ? demangled : name, stream); |
2517 | if (demangled != NULL) | |
2518 | { | |
b8c9b27d | 2519 | xfree (demangled); |
c906108c SS |
2520 | } |
2521 | } | |
2522 | } | |
2523 | } | |
2524 | ||
2525 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2526 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2527 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2528 | |
c906108c SS |
2529 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2530 | This "feature" is useful when searching for matching C++ function names | |
2531 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
581e13c1 | 2532 | function). */ |
c906108c SS |
2533 | |
2534 | int | |
fba45db2 | 2535 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2536 | { |
2537 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2538 | { | |
2539 | while (isspace (*string1)) | |
2540 | { | |
2541 | string1++; | |
2542 | } | |
2543 | while (isspace (*string2)) | |
2544 | { | |
2545 | string2++; | |
2546 | } | |
559a7a62 JK |
2547 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2548 | break; | |
2549 | if (case_sensitivity == case_sensitive_off | |
2550 | && (tolower ((unsigned char) *string1) | |
2551 | != tolower ((unsigned char) *string2))) | |
2552 | break; | |
c906108c SS |
2553 | if (*string1 != '\0') |
2554 | { | |
2555 | string1++; | |
2556 | string2++; | |
2557 | } | |
2558 | } | |
2559 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2560 | } | |
2de7ced7 | 2561 | |
0fe19209 DC |
2562 | /* This is like strcmp except that it ignores whitespace and treats |
2563 | '(' as the first non-NULL character in terms of ordering. Like | |
2564 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2565 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2566 | according to that ordering. | |
2567 | ||
2568 | If a list is sorted according to this function and if you want to | |
2569 | find names in the list that match some fixed NAME according to | |
2570 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2571 | where this function would put NAME. | |
2572 | ||
559a7a62 JK |
2573 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2574 | may choose it during later lookup. Therefore this function always sorts | |
2575 | primarily case-insensitively and secondarily case-sensitively. | |
2576 | ||
0fe19209 DC |
2577 | Here are some examples of why using strcmp to sort is a bad idea: |
2578 | ||
2579 | Whitespace example: | |
2580 | ||
2581 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2582 | we try to do a search for "foo<char*>", strcmp will locate this | |
2583 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2584 | will start looking at strings beginning with "goo", and will never | |
2585 | see the correct match of "foo<char *>". | |
2586 | ||
2587 | Parenthesis example: | |
2588 | ||
2589 | In practice, this is less like to be an issue, but I'll give it a | |
2590 | shot. Let's assume that '$' is a legitimate character to occur in | |
2591 | symbols. (Which may well even be the case on some systems.) Then | |
2592 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2593 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2594 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2595 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2596 | "foo") is false, so it won't proceed to the actual match of | |
2597 | "foo(int)" with "foo". */ | |
2598 | ||
2599 | int | |
2600 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2601 | { | |
559a7a62 JK |
2602 | const char *saved_string1 = string1, *saved_string2 = string2; |
2603 | enum case_sensitivity case_pass = case_sensitive_off; | |
2604 | ||
2605 | for (;;) | |
0fe19209 | 2606 | { |
b11b1f88 JK |
2607 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2608 | Provide stub characters if we are already at the end of one of the | |
2609 | strings. */ | |
2610 | char c1 = 'X', c2 = 'X'; | |
2611 | ||
2612 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2613 | { |
b11b1f88 JK |
2614 | while (isspace (*string1)) |
2615 | string1++; | |
2616 | while (isspace (*string2)) | |
2617 | string2++; | |
2618 | ||
559a7a62 JK |
2619 | switch (case_pass) |
2620 | { | |
2621 | case case_sensitive_off: | |
2622 | c1 = tolower ((unsigned char) *string1); | |
2623 | c2 = tolower ((unsigned char) *string2); | |
2624 | break; | |
2625 | case case_sensitive_on: | |
b11b1f88 JK |
2626 | c1 = *string1; |
2627 | c2 = *string2; | |
559a7a62 JK |
2628 | break; |
2629 | } | |
b11b1f88 JK |
2630 | if (c1 != c2) |
2631 | break; | |
2632 | ||
2633 | if (*string1 != '\0') | |
2634 | { | |
2635 | string1++; | |
2636 | string2++; | |
2637 | } | |
0fe19209 | 2638 | } |
b11b1f88 JK |
2639 | |
2640 | switch (*string1) | |
0fe19209 | 2641 | { |
b11b1f88 JK |
2642 | /* Characters are non-equal unless they're both '\0'; we want to |
2643 | make sure we get the comparison right according to our | |
2644 | comparison in the cases where one of them is '\0' or '('. */ | |
2645 | case '\0': | |
2646 | if (*string2 == '\0') | |
559a7a62 | 2647 | break; |
b11b1f88 JK |
2648 | else |
2649 | return -1; | |
2650 | case '(': | |
2651 | if (*string2 == '\0') | |
2652 | return 1; | |
2653 | else | |
2654 | return -1; | |
2655 | default: | |
2656 | if (*string2 == '\0' || *string2 == '(') | |
2657 | return 1; | |
559a7a62 JK |
2658 | else if (c1 > c2) |
2659 | return 1; | |
2660 | else if (c1 < c2) | |
2661 | return -1; | |
2662 | /* PASSTHRU */ | |
0fe19209 | 2663 | } |
559a7a62 JK |
2664 | |
2665 | if (case_pass == case_sensitive_on) | |
2666 | return 0; | |
2667 | ||
2668 | /* Otherwise the strings were equal in case insensitive way, make | |
2669 | a more fine grained comparison in a case sensitive way. */ | |
2670 | ||
2671 | case_pass = case_sensitive_on; | |
2672 | string1 = saved_string1; | |
2673 | string2 = saved_string2; | |
0fe19209 | 2674 | } |
0fe19209 DC |
2675 | } |
2676 | ||
2de7ced7 DJ |
2677 | /* A simple comparison function with opposite semantics to strcmp. */ |
2678 | ||
2679 | int | |
2680 | streq (const char *lhs, const char *rhs) | |
2681 | { | |
2682 | return !strcmp (lhs, rhs); | |
2683 | } | |
c906108c | 2684 | \f |
c5aa993b | 2685 | |
c906108c | 2686 | /* |
c5aa993b JM |
2687 | ** subset_compare() |
2688 | ** Answer whether string_to_compare is a full or partial match to | |
2689 | ** template_string. The partial match must be in sequence starting | |
2690 | ** at index 0. | |
2691 | */ | |
c906108c | 2692 | int |
fba45db2 | 2693 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2694 | { |
2695 | int match; | |
e0627e85 | 2696 | |
8731e58e AC |
2697 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2698 | && strlen (string_to_compare) <= strlen (template_string)) | |
2699 | match = | |
61012eef | 2700 | (startswith (template_string, string_to_compare)); |
7a292a7a SS |
2701 | else |
2702 | match = 0; | |
2703 | return match; | |
2704 | } | |
c906108c | 2705 | |
75feb17d DJ |
2706 | static void |
2707 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2708 | struct cmd_list_element *c, const char *value) | |
2709 | { | |
3e43a32a MS |
2710 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2711 | value); | |
75feb17d | 2712 | } |
c906108c | 2713 | \f |
c5aa993b | 2714 | |
c906108c | 2715 | void |
fba45db2 | 2716 | initialize_utils (void) |
c906108c | 2717 | { |
35096d9d | 2718 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2719 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2720 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2721 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2722 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2723 | set_width_command, |
920d2a44 | 2724 | show_chars_per_line, |
35096d9d AC |
2725 | &setlist, &showlist); |
2726 | ||
2727 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2728 | Set number of lines in a page for GDB output pagination."), _("\ |
2729 | Show number of lines in a page for GDB output pagination."), _("\ | |
2730 | This affects the number of lines after which GDB will pause\n\ | |
2731 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2732 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2733 | set_height_command, |
920d2a44 | 2734 | show_lines_per_page, |
35096d9d | 2735 | &setlist, &showlist); |
c5aa993b | 2736 | |
5bf193a2 AC |
2737 | add_setshow_boolean_cmd ("pagination", class_support, |
2738 | &pagination_enabled, _("\ | |
77dec115 EZ |
2739 | Set state of GDB output pagination."), _("\ |
2740 | Show state of GDB output pagination."), _("\ | |
2741 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2742 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2743 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2744 | NULL, |
920d2a44 | 2745 | show_pagination_enabled, |
5bf193a2 | 2746 | &setlist, &showlist); |
4261bedc | 2747 | |
5bf193a2 AC |
2748 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2749 | &sevenbit_strings, _("\ | |
2750 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2751 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2752 | NULL, | |
920d2a44 | 2753 | show_sevenbit_strings, |
5bf193a2 AC |
2754 | &setprintlist, &showprintlist); |
2755 | ||
75feb17d DJ |
2756 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2757 | &debug_timestamp, _("\ | |
2758 | Set timestamping of debugging messages."), _("\ | |
2759 | Show timestamping of debugging messages."), _("\ | |
2760 | When set, debugging messages will be marked with seconds and microseconds."), | |
2761 | NULL, | |
2762 | show_debug_timestamp, | |
2763 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2764 | } |
2765 | ||
66bf4b3a | 2766 | const char * |
5af949e3 | 2767 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2768 | { |
2769 | /* Truncate address to the size of a target address, avoiding shifts | |
2770 | larger or equal than the width of a CORE_ADDR. The local | |
2771 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2772 | when it won't occur. */ |
66bf4b3a AC |
2773 | /* NOTE: This assumes that the significant address information is |
2774 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2775 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2776 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2777 | ||
5af949e3 | 2778 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2779 | |
2780 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2781 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2782 | return hex_string (addr); | |
2783 | } | |
2784 | ||
f1310107 TJB |
2785 | /* This function is described in "defs.h". */ |
2786 | ||
2787 | const char * | |
2788 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2789 | { | |
2790 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2791 | ||
2792 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2793 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2794 | ||
2795 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2796 | that returns the language localized string formatted to a width | |
2797 | based on gdbarch_addr_bit. */ | |
2798 | if (addr_bit <= 32) | |
2799 | return hex_string_custom (address, 8); | |
2800 | else | |
2801 | return hex_string_custom (address, 16); | |
2802 | } | |
2803 | ||
8e3b41a9 JK |
2804 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2805 | ||
2806 | hashval_t | |
2807 | core_addr_hash (const void *ap) | |
2808 | { | |
19ba03f4 | 2809 | const CORE_ADDR *addrp = (const CORE_ADDR *) ap; |
8e3b41a9 JK |
2810 | |
2811 | return *addrp; | |
2812 | } | |
2813 | ||
2814 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2815 | ||
2816 | int | |
2817 | core_addr_eq (const void *ap, const void *bp) | |
2818 | { | |
19ba03f4 SM |
2819 | const CORE_ADDR *addr_ap = (const CORE_ADDR *) ap; |
2820 | const CORE_ADDR *addr_bp = (const CORE_ADDR *) bp; | |
8e3b41a9 JK |
2821 | |
2822 | return *addr_ap == *addr_bp; | |
2823 | } | |
2824 | ||
03dd37c3 AC |
2825 | /* Convert a string back into a CORE_ADDR. */ |
2826 | CORE_ADDR | |
2827 | string_to_core_addr (const char *my_string) | |
2828 | { | |
2829 | CORE_ADDR addr = 0; | |
9544c605 | 2830 | |
03dd37c3 AC |
2831 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2832 | { | |
ced572fe | 2833 | /* Assume that it is in hex. */ |
03dd37c3 | 2834 | int i; |
5d502164 | 2835 | |
03dd37c3 AC |
2836 | for (i = 2; my_string[i] != '\0'; i++) |
2837 | { | |
2838 | if (isdigit (my_string[i])) | |
2839 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2840 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2841 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2842 | else | |
63f06803 | 2843 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2844 | } |
2845 | } | |
2846 | else | |
2847 | { | |
2848 | /* Assume that it is in decimal. */ | |
2849 | int i; | |
5d502164 | 2850 | |
03dd37c3 AC |
2851 | for (i = 0; my_string[i] != '\0'; i++) |
2852 | { | |
2853 | if (isdigit (my_string[i])) | |
2854 | addr = (my_string[i] - '0') + (addr * 10); | |
2855 | else | |
63f06803 | 2856 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2857 | } |
2858 | } | |
9544c605 | 2859 | |
03dd37c3 AC |
2860 | return addr; |
2861 | } | |
58d370e0 TT |
2862 | |
2863 | char * | |
2864 | gdb_realpath (const char *filename) | |
2865 | { | |
0fa9473f JB |
2866 | /* On most hosts, we rely on canonicalize_file_name to compute |
2867 | the FILENAME's realpath. | |
2868 | ||
2869 | But the situation is slightly more complex on Windows, due to some | |
2870 | versions of GCC which were reported to generate paths where | |
2871 | backlashes (the directory separator) were doubled. For instance: | |
2872 | c:\\some\\double\\slashes\\dir | |
2873 | ... instead of ... | |
2874 | c:\some\double\slashes\dir | |
2875 | Those double-slashes were getting in the way when comparing paths, | |
2876 | for instance when trying to insert a breakpoint as follow: | |
2877 | (gdb) b c:/some/double/slashes/dir/foo.c:4 | |
2878 | No source file named c:/some/double/slashes/dir/foo.c:4. | |
2879 | (gdb) b c:\some\double\slashes\dir\foo.c:4 | |
2880 | No source file named c:\some\double\slashes\dir\foo.c:4. | |
2881 | To prevent this from happening, we need this function to always | |
2882 | strip those extra backslashes. While canonicalize_file_name does | |
2883 | perform this simplification, it only works when the path is valid. | |
2884 | Since the simplification would be useful even if the path is not | |
2885 | valid (one can always set a breakpoint on a file, even if the file | |
2886 | does not exist locally), we rely instead on GetFullPathName to | |
2887 | perform the canonicalization. */ | |
2888 | ||
9c5e4386 JB |
2889 | #if defined (_WIN32) |
2890 | { | |
2891 | char buf[MAX_PATH]; | |
2892 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2893 | ||
0fa9473f JB |
2894 | /* The file system is case-insensitive but case-preserving. |
2895 | So it is important we do not lowercase the path. Otherwise, | |
2896 | we might not be able to display the original casing in a given | |
2897 | path. */ | |
9c5e4386 JB |
2898 | if (len > 0 && len < MAX_PATH) |
2899 | return xstrdup (buf); | |
2900 | } | |
abbffc89 YQ |
2901 | #else |
2902 | { | |
2903 | char *rp = canonicalize_file_name (filename); | |
2904 | ||
2905 | if (rp != NULL) | |
2906 | return rp; | |
2907 | } | |
9c5e4386 JB |
2908 | #endif |
2909 | ||
70d35819 AC |
2910 | /* This system is a lost cause, just dup the buffer. */ |
2911 | return xstrdup (filename); | |
58d370e0 | 2912 | } |
303c8ebd | 2913 | |
4856b6bc JK |
2914 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2915 | by gdb_realpath. */ | |
2916 | ||
2917 | char * | |
2918 | gdb_realpath_keepfile (const char *filename) | |
2919 | { | |
2920 | const char *base_name = lbasename (filename); | |
2921 | char *dir_name; | |
2922 | char *real_path; | |
2923 | char *result; | |
2924 | ||
2925 | /* Extract the basename of filename, and return immediately | |
2926 | a copy of filename if it does not contain any directory prefix. */ | |
2927 | if (base_name == filename) | |
2928 | return xstrdup (filename); | |
2929 | ||
224c3ddb | 2930 | dir_name = (char *) alloca ((size_t) (base_name - filename + 2)); |
4856b6bc JK |
2931 | /* Allocate enough space to store the dir_name + plus one extra |
2932 | character sometimes needed under Windows (see below), and | |
2933 | then the closing \000 character. */ | |
2934 | strncpy (dir_name, filename, base_name - filename); | |
2935 | dir_name[base_name - filename] = '\000'; | |
2936 | ||
2937 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2938 | /* We need to be careful when filename is of the form 'd:foo', which | |
2939 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2940 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2941 | { | |
2942 | dir_name[2] = '.'; | |
2943 | dir_name[3] = '\000'; | |
2944 | } | |
2945 | #endif | |
2946 | ||
2947 | /* Canonicalize the directory prefix, and build the resulting | |
2948 | filename. If the dirname realpath already contains an ending | |
2949 | directory separator, avoid doubling it. */ | |
2950 | real_path = gdb_realpath (dir_name); | |
2951 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2952 | result = concat (real_path, base_name, (char *) NULL); | |
2953 | else | |
2954 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2955 | ||
2956 | xfree (real_path); | |
2957 | return result; | |
2958 | } | |
2959 | ||
04affae3 JK |
2960 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
2961 | PATH cannot be NULL or the empty string. | |
2962 | This does not resolve symlinks however, use gdb_realpath for that. | |
2963 | Space for the result is allocated with malloc. | |
2964 | If the path is already absolute, it is strdup'd. | |
2965 | If there is a problem computing the absolute path, the path is returned | |
2966 | unchanged (still strdup'd). */ | |
2967 | ||
2968 | char * | |
2969 | gdb_abspath (const char *path) | |
2970 | { | |
2971 | gdb_assert (path != NULL && path[0] != '\0'); | |
2972 | ||
2973 | if (path[0] == '~') | |
2974 | return tilde_expand (path); | |
2975 | ||
2976 | if (IS_ABSOLUTE_PATH (path)) | |
2977 | return xstrdup (path); | |
2978 | ||
2979 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
2980 | return concat (current_directory, | |
2981 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
2982 | ? "" : SLASH_STRING, | |
2983 | path, (char *) NULL); | |
2984 | } | |
2985 | ||
5b03f266 AC |
2986 | ULONGEST |
2987 | align_up (ULONGEST v, int n) | |
2988 | { | |
2989 | /* Check that N is really a power of two. */ | |
2990 | gdb_assert (n && (n & (n-1)) == 0); | |
2991 | return (v + n - 1) & -n; | |
2992 | } | |
2993 | ||
2994 | ULONGEST | |
2995 | align_down (ULONGEST v, int n) | |
2996 | { | |
2997 | /* Check that N is really a power of two. */ | |
2998 | gdb_assert (n && (n & (n-1)) == 0); | |
2999 | return (v & -n); | |
3000 | } | |
ae5a43e0 DJ |
3001 | |
3002 | /* Allocation function for the libiberty hash table which uses an | |
3003 | obstack. The obstack is passed as DATA. */ | |
3004 | ||
3005 | void * | |
3006 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
3007 | { | |
241fd515 | 3008 | size_t total = size * count; |
ae5a43e0 | 3009 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 3010 | |
ae5a43e0 DJ |
3011 | memset (ptr, 0, total); |
3012 | return ptr; | |
3013 | } | |
3014 | ||
3015 | /* Trivial deallocation function for the libiberty splay tree and hash | |
3016 | table - don't deallocate anything. Rely on later deletion of the | |
3017 | obstack. DATA will be the obstack, although it is not needed | |
3018 | here. */ | |
3019 | ||
3020 | void | |
3021 | dummy_obstack_deallocate (void *object, void *data) | |
3022 | { | |
3023 | return; | |
3024 | } | |
253c8abb | 3025 | |
e1024ff1 DJ |
3026 | /* Simple, portable version of dirname that does not modify its |
3027 | argument. */ | |
3028 | ||
3029 | char * | |
3030 | ldirname (const char *filename) | |
3031 | { | |
3032 | const char *base = lbasename (filename); | |
3033 | char *dirname; | |
3034 | ||
3035 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
3036 | --base; | |
3037 | ||
3038 | if (base == filename) | |
3039 | return NULL; | |
3040 | ||
224c3ddb | 3041 | dirname = (char *) xmalloc (base - filename + 2); |
e1024ff1 DJ |
3042 | memcpy (dirname, filename, base - filename); |
3043 | ||
3044 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
3045 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
3046 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
3047 | && !IS_DIR_SEPARATOR (filename[0])) | |
3048 | dirname[base++ - filename] = '.'; | |
3049 | ||
3050 | dirname[base - filename] = '\0'; | |
3051 | return dirname; | |
3052 | } | |
d1a41061 PP |
3053 | |
3054 | /* Call libiberty's buildargv, and return the result. | |
3055 | If buildargv fails due to out-of-memory, call nomem. | |
3056 | Therefore, the returned value is guaranteed to be non-NULL, | |
3057 | unless the parameter itself is NULL. */ | |
3058 | ||
3059 | char ** | |
3060 | gdb_buildargv (const char *s) | |
3061 | { | |
3062 | char **argv = buildargv (s); | |
e0627e85 | 3063 | |
d1a41061 | 3064 | if (s != NULL && argv == NULL) |
d26e3629 | 3065 | malloc_failure (0); |
d1a41061 PP |
3066 | return argv; |
3067 | } | |
3c16cced | 3068 | |
dc146f7c VP |
3069 | int |
3070 | compare_positive_ints (const void *ap, const void *bp) | |
3071 | { | |
3072 | /* Because we know we're comparing two ints which are positive, | |
3073 | there's no danger of overflow here. */ | |
3074 | return * (int *) ap - * (int *) bp; | |
3075 | } | |
3076 | ||
f8eba3c6 TT |
3077 | /* String compare function for qsort. */ |
3078 | ||
3079 | int | |
3080 | compare_strings (const void *arg1, const void *arg2) | |
3081 | { | |
3082 | const char **s1 = (const char **) arg1; | |
3083 | const char **s2 = (const char **) arg2; | |
3084 | ||
3085 | return strcmp (*s1, *s2); | |
3086 | } | |
3087 | ||
d18b8b7a | 3088 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
3089 | #define AMBIGUOUS_MESS2 \ |
3090 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
3091 | |
3092 | const char * | |
3093 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
3094 | { | |
3095 | char *ret, *retp; | |
3096 | int ret_len; | |
3097 | char **p; | |
3098 | ||
3099 | /* Check if errmsg just need simple return. */ | |
3100 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
3101 | return bfd_errmsg (error_tag); | |
3102 | ||
3103 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
3104 | + strlen (AMBIGUOUS_MESS2); | |
3105 | for (p = matching; *p; p++) | |
3106 | ret_len += strlen (*p) + 1; | |
224c3ddb | 3107 | ret = (char *) xmalloc (ret_len + 1); |
d18b8b7a HZ |
3108 | retp = ret; |
3109 | make_cleanup (xfree, ret); | |
3110 | ||
3111 | strcpy (retp, bfd_errmsg (error_tag)); | |
3112 | retp += strlen (retp); | |
3113 | ||
3114 | strcpy (retp, AMBIGUOUS_MESS1); | |
3115 | retp += strlen (retp); | |
3116 | ||
3117 | for (p = matching; *p; p++) | |
3118 | { | |
3119 | sprintf (retp, " %s", *p); | |
3120 | retp += strlen (retp); | |
3121 | } | |
3122 | xfree (matching); | |
3123 | ||
3124 | strcpy (retp, AMBIGUOUS_MESS2); | |
3125 | ||
3126 | return ret; | |
3127 | } | |
3128 | ||
74164c56 JK |
3129 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
3130 | ||
3131 | int | |
c0939df1 | 3132 | parse_pid_to_attach (const char *args) |
74164c56 JK |
3133 | { |
3134 | unsigned long pid; | |
3135 | char *dummy; | |
3136 | ||
3137 | if (!args) | |
3138 | error_no_arg (_("process-id to attach")); | |
3139 | ||
c0939df1 | 3140 | dummy = (char *) args; |
74164c56 JK |
3141 | pid = strtoul (args, &dummy, 0); |
3142 | /* Some targets don't set errno on errors, grrr! */ | |
3143 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
3144 | error (_("Illegal process-id: %s."), args); | |
3145 | ||
3146 | return pid; | |
3147 | } | |
3148 | ||
353d1d73 JK |
3149 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
3150 | ||
3151 | static void | |
3152 | do_bpstat_clear_actions_cleanup (void *unused) | |
3153 | { | |
3154 | bpstat_clear_actions (); | |
3155 | } | |
3156 | ||
3157 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
3158 | discard_cleanups if no exception is caught. */ | |
3159 | ||
3160 | struct cleanup * | |
3161 | make_bpstat_clear_actions_cleanup (void) | |
3162 | { | |
3163 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
3164 | } | |
3165 | ||
df15bd07 JK |
3166 | /* Check for GCC >= 4.x according to the symtab->producer string. Return minor |
3167 | version (x) of 4.x in such case. If it is not GCC or it is GCC older than | |
3168 | 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */ | |
3169 | ||
3170 | int | |
3171 | producer_is_gcc_ge_4 (const char *producer) | |
3172 | { | |
df15bd07 | 3173 | int major, minor; |
b1ffba5a MW |
3174 | |
3175 | if (! producer_is_gcc (producer, &major, &minor)) | |
3176 | return -1; | |
df15bd07 JK |
3177 | if (major < 4) |
3178 | return -1; | |
3179 | if (major > 4) | |
3180 | return INT_MAX; | |
3181 | return minor; | |
3182 | } | |
3183 | ||
cc7039d3 JB |
3184 | /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR |
3185 | and MINOR versions when not NULL. Returns zero if the given PRODUCER | |
b1ffba5a MW |
3186 | is NULL or it isn't GCC. */ |
3187 | ||
cc7039d3 | 3188 | int |
b1ffba5a | 3189 | producer_is_gcc (const char *producer, int *major, int *minor) |
38360086 MW |
3190 | { |
3191 | const char *cs; | |
38360086 | 3192 | |
61012eef | 3193 | if (producer != NULL && startswith (producer, "GNU ")) |
38360086 | 3194 | { |
b1ffba5a MW |
3195 | int maj, min; |
3196 | ||
3197 | if (major == NULL) | |
3198 | major = &maj; | |
3199 | if (minor == NULL) | |
3200 | minor = &min; | |
3201 | ||
38360086 MW |
3202 | /* Skip any identifier after "GNU " - such as "C11" "C++" or "Java". |
3203 | A full producer string might look like: | |
3204 | "GNU C 4.7.2" | |
3205 | "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..." | |
3206 | "GNU C++14 5.0.0 20150123 (experimental)" | |
3207 | */ | |
3208 | cs = &producer[strlen ("GNU ")]; | |
3209 | while (*cs && !isspace (*cs)) | |
3210 | cs++; | |
3211 | if (*cs && isspace (*cs)) | |
3212 | cs++; | |
b1ffba5a | 3213 | if (sscanf (cs, "%d.%d", major, minor) == 2) |
cc7039d3 | 3214 | return 1; |
38360086 MW |
3215 | } |
3216 | ||
3217 | /* Not recognized as GCC. */ | |
cc7039d3 | 3218 | return 0; |
38360086 MW |
3219 | } |
3220 | ||
e4ab2fad JK |
3221 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
3222 | ||
3223 | static void | |
3224 | do_free_char_ptr_vec (void *arg) | |
3225 | { | |
19ba03f4 | 3226 | VEC (char_ptr) *char_ptr_vec = (VEC (char_ptr) *) arg; |
e4ab2fad JK |
3227 | |
3228 | free_char_ptr_vec (char_ptr_vec); | |
3229 | } | |
3230 | ||
3231 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
3232 | final VEC_free for CHAR_PTR_VEC itself. | |
3233 | ||
3234 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
3235 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
3236 | this function does not (cannot) clear the pointer. */ | |
3237 | ||
3238 | struct cleanup * | |
3239 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
3240 | { | |
3241 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
3242 | } | |
3243 | ||
6dea1fbd JK |
3244 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3245 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3246 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3247 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3248 | |
3249 | void | |
3250 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3251 | { | |
3252 | char *string = *stringp, *s; | |
3253 | const size_t from_len = strlen (from); | |
3254 | const size_t to_len = strlen (to); | |
3255 | ||
3256 | for (s = string;;) | |
3257 | { | |
3258 | s = strstr (s, from); | |
3259 | if (s == NULL) | |
3260 | break; | |
3261 | ||
1564a261 JK |
3262 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3263 | || s[-1] == DIRNAME_SEPARATOR) | |
3264 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3265 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3266 | { |
3267 | char *string_new; | |
3268 | ||
224c3ddb SM |
3269 | string_new |
3270 | = (char *) xrealloc (string, (strlen (string) + to_len + 1)); | |
6dea1fbd JK |
3271 | |
3272 | /* Relocate the current S pointer. */ | |
3273 | s = s - string + string_new; | |
3274 | string = string_new; | |
3275 | ||
3276 | /* Replace from by to. */ | |
3277 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3278 | memcpy (s, to, to_len); | |
3279 | ||
3280 | s += to_len; | |
3281 | } | |
3282 | else | |
3283 | s++; | |
3284 | } | |
3285 | ||
3286 | *stringp = string; | |
3287 | } | |
3288 | ||
0b6cb71e DE |
3289 | #ifdef HAVE_WAITPID |
3290 | ||
3291 | #ifdef SIGALRM | |
3292 | ||
3293 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3294 | ||
3295 | static void | |
3296 | sigalrm_handler (int signo) | |
3297 | { | |
3298 | /* Nothing to do. */ | |
3299 | } | |
3300 | ||
3301 | #endif | |
3302 | ||
3303 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3304 | TIMEOUT is the time to stop waiting in seconds. | |
3305 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3306 | Returns PID if it was successfully waited for, otherwise -1. | |
3307 | ||
3308 | Timeouts are currently implemented with alarm and SIGALRM. | |
3309 | If the host does not support them, this waits "forever". | |
3310 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3311 | ||
3312 | pid_t | |
3313 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3314 | { | |
3315 | pid_t waitpid_result; | |
3316 | ||
3317 | gdb_assert (pid > 0); | |
3318 | gdb_assert (timeout >= 0); | |
3319 | ||
3320 | if (timeout > 0) | |
3321 | { | |
3322 | #ifdef SIGALRM | |
3323 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3324 | struct sigaction sa, old_sa; | |
3325 | ||
3326 | sa.sa_handler = sigalrm_handler; | |
3327 | sigemptyset (&sa.sa_mask); | |
3328 | sa.sa_flags = 0; | |
3329 | sigaction (SIGALRM, &sa, &old_sa); | |
3330 | #else | |
a40805d4 | 3331 | sighandler_t ofunc; |
0b6cb71e | 3332 | |
a40805d4 | 3333 | ofunc = signal (SIGALRM, sigalrm_handler); |
0b6cb71e DE |
3334 | #endif |
3335 | ||
3336 | alarm (timeout); | |
3337 | #endif | |
3338 | ||
3339 | waitpid_result = waitpid (pid, status, 0); | |
3340 | ||
3341 | #ifdef SIGALRM | |
3342 | alarm (0); | |
3343 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3344 | sigaction (SIGALRM, &old_sa, NULL); | |
3345 | #else | |
3346 | signal (SIGALRM, ofunc); | |
3347 | #endif | |
3348 | #endif | |
3349 | } | |
3350 | else | |
3351 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3352 | ||
3353 | if (waitpid_result == pid) | |
3354 | return pid; | |
3355 | else | |
3356 | return -1; | |
3357 | } | |
3358 | ||
3359 | #endif /* HAVE_WAITPID */ | |
3360 | ||
202cbf1c JK |
3361 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3362 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3363 | ||
3364 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3365 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3366 | ||
3367 | int | |
3368 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3369 | { | |
3370 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3371 | ||
3372 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3373 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3374 | ||
3375 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3376 | { | |
3377 | char *pattern_slash, *string_slash; | |
3378 | ||
3379 | /* Replace '\' by '/' in both strings. */ | |
3380 | ||
0ae1c716 | 3381 | pattern_slash = (char *) alloca (strlen (pattern) + 1); |
202cbf1c JK |
3382 | strcpy (pattern_slash, pattern); |
3383 | pattern = pattern_slash; | |
3384 | for (; *pattern_slash != 0; pattern_slash++) | |
3385 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3386 | *pattern_slash = '/'; | |
3387 | ||
0ae1c716 | 3388 | string_slash = (char *) alloca (strlen (string) + 1); |
202cbf1c JK |
3389 | strcpy (string_slash, string); |
3390 | string = string_slash; | |
3391 | for (; *string_slash != 0; string_slash++) | |
3392 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3393 | *string_slash = '/'; | |
3394 | } | |
3395 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3396 | ||
3397 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3398 | flags |= FNM_CASEFOLD; | |
3399 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3400 | ||
3401 | return fnmatch (pattern, string, flags); | |
3402 | } | |
3403 | ||
cce0e923 DE |
3404 | /* Return the number of path elements in PATH. |
3405 | / = 1 | |
3406 | /foo = 2 | |
3407 | /foo/ = 2 | |
3408 | foo/bar = 2 | |
3409 | foo/ = 1 */ | |
3410 | ||
3411 | int | |
3412 | count_path_elements (const char *path) | |
3413 | { | |
3414 | int count = 0; | |
3415 | const char *p = path; | |
3416 | ||
3417 | if (HAS_DRIVE_SPEC (p)) | |
3418 | { | |
3419 | p = STRIP_DRIVE_SPEC (p); | |
3420 | ++count; | |
3421 | } | |
3422 | ||
3423 | while (*p != '\0') | |
3424 | { | |
3425 | if (IS_DIR_SEPARATOR (*p)) | |
3426 | ++count; | |
3427 | ++p; | |
3428 | } | |
3429 | ||
3430 | /* Backup one if last character is /, unless it's the only one. */ | |
3431 | if (p > path + 1 && IS_DIR_SEPARATOR (p[-1])) | |
3432 | --count; | |
3433 | ||
3434 | /* Add one for the file name, if present. */ | |
3435 | if (p > path && !IS_DIR_SEPARATOR (p[-1])) | |
3436 | ++count; | |
3437 | ||
3438 | return count; | |
3439 | } | |
3440 | ||
3441 | /* Remove N leading path elements from PATH. | |
3442 | N must be non-negative. | |
3443 | If PATH has more than N path elements then return NULL. | |
3444 | If PATH has exactly N path elements then return "". | |
3445 | See count_path_elements for a description of how we do the counting. */ | |
3446 | ||
3447 | const char * | |
3448 | strip_leading_path_elements (const char *path, int n) | |
3449 | { | |
3450 | int i = 0; | |
3451 | const char *p = path; | |
3452 | ||
3453 | gdb_assert (n >= 0); | |
3454 | ||
3455 | if (n == 0) | |
3456 | return p; | |
3457 | ||
3458 | if (HAS_DRIVE_SPEC (p)) | |
3459 | { | |
3460 | p = STRIP_DRIVE_SPEC (p); | |
3461 | ++i; | |
3462 | } | |
3463 | ||
3464 | while (i < n) | |
3465 | { | |
3466 | while (*p != '\0' && !IS_DIR_SEPARATOR (*p)) | |
3467 | ++p; | |
3468 | if (*p == '\0') | |
3469 | { | |
3470 | if (i + 1 == n) | |
3471 | return ""; | |
3472 | return NULL; | |
3473 | } | |
3474 | ++p; | |
3475 | ++i; | |
3476 | } | |
3477 | ||
3478 | return p; | |
3479 | } | |
3480 | ||
2c0b251b PA |
3481 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3482 | extern initialize_file_ftype _initialize_utils; | |
3483 | ||
3c16cced PA |
3484 | void |
3485 | _initialize_utils (void) | |
3486 | { | |
3487 | add_internal_problem_command (&internal_error_problem); | |
3488 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3489 | add_internal_problem_command (&demangler_warning_problem); |
3c16cced | 3490 | } |