Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" |
5a56e9c5 | 21 | #include "dyn-string.h" |
4e8f7a8b | 22 | #include <ctype.h> |
0b6cb71e | 23 | #include "gdb_wait.h" |
4e8f7a8b | 24 | #include "event-top.h" |
60250e8b | 25 | #include "exceptions.h" |
95e54da7 | 26 | #include "gdbthread.h" |
202cbf1c | 27 | #include "fnmatch.h" |
cbb099e8 | 28 | #include "gdb_bfd.h" |
7991dee7 JK |
29 | #ifdef HAVE_SYS_RESOURCE_H |
30 | #include <sys/resource.h> | |
31 | #endif /* HAVE_SYS_RESOURCE_H */ | |
4e8f7a8b | 32 | |
6a83354a AC |
33 | #ifdef TUI |
34 | #include "tui/tui.h" /* For tui_get_command_dimension. */ | |
35 | #endif | |
36 | ||
9d271fd8 AC |
37 | #ifdef __GO32__ |
38 | #include <pc.h> | |
39 | #endif | |
40 | ||
042be3a9 | 41 | #include <signal.h> |
0a1c4d10 | 42 | #include "timeval-utils.h" |
c906108c SS |
43 | #include "gdbcmd.h" |
44 | #include "serial.h" | |
45 | #include "bfd.h" | |
46 | #include "target.h" | |
50f182aa | 47 | #include "gdb-demangle.h" |
c906108c SS |
48 | #include "expression.h" |
49 | #include "language.h" | |
234b45d4 | 50 | #include "charset.h" |
c906108c | 51 | #include "annotate.h" |
303c8ebd | 52 | #include "filenames.h" |
7b90c3f9 | 53 | #include "symfile.h" |
ae5a43e0 | 54 | #include "gdb_obstack.h" |
9544c605 | 55 | #include "gdbcore.h" |
698ba934 | 56 | #include "top.h" |
7c953934 | 57 | #include "main.h" |
cb08cc53 | 58 | #include "solist.h" |
c906108c | 59 | |
8731e58e | 60 | #include "inferior.h" /* for signed_pointer_to_address */ |
ac2e2ef7 | 61 | |
3b78cdbb | 62 | #include "gdb_curses.h" |
020cc13c | 63 | |
dbda9972 | 64 | #include "readline/readline.h" |
c906108c | 65 | |
75feb17d DJ |
66 | #include <sys/time.h> |
67 | #include <time.h> | |
68 | ||
8626589c | 69 | #include "gdb_usleep.h" |
390a8aca | 70 | #include "interps.h" |
dc92e161 | 71 | #include "gdb_regex.h" |
8626589c | 72 | |
a3828db0 | 73 | #if !HAVE_DECL_MALLOC |
5ac79d78 | 74 | extern PTR malloc (); /* ARI: PTR */ |
3c37485b | 75 | #endif |
a3828db0 | 76 | #if !HAVE_DECL_REALLOC |
5ac79d78 | 77 | extern PTR realloc (); /* ARI: PTR */ |
0e52036f | 78 | #endif |
a3828db0 | 79 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
80 | extern void free (); |
81 | #endif | |
81b8eb80 | 82 | |
9a4105ab | 83 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
84 | |
85 | /* Prototypes for local functions */ | |
86 | ||
d9fcf2fb | 87 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 88 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 89 | |
d9fcf2fb | 90 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void prompt_for_continue (void); |
c906108c | 93 | |
eb0d3137 | 94 | static void set_screen_size (void); |
a14ed312 | 95 | static void set_width (void); |
c906108c | 96 | |
260c0b2a DE |
97 | /* Time spent in prompt_for_continue in the currently executing command |
98 | waiting for user to respond. | |
99 | Initialized in make_command_stats_cleanup. | |
100 | Modified in prompt_for_continue and defaulted_query. | |
101 | Used in report_command_stats. */ | |
102 | ||
103 | static struct timeval prompt_for_continue_wait_time; | |
104 | ||
75feb17d DJ |
105 | /* A flag indicating whether to timestamp debugging messages. */ |
106 | ||
107 | static int debug_timestamp = 0; | |
108 | ||
581e13c1 | 109 | /* Nonzero if we have job control. */ |
c906108c SS |
110 | |
111 | int job_control; | |
112 | ||
c906108c SS |
113 | /* Nonzero means quit immediately if Control-C is typed now, rather |
114 | than waiting until QUIT is executed. Be careful in setting this; | |
115 | code which executes with immediate_quit set has to be very careful | |
116 | about being able to deal with being interrupted at any time. It is | |
117 | almost always better to use QUIT; the only exception I can think of | |
118 | is being able to quit out of a system call (using EINTR loses if | |
119 | the SIGINT happens between the previous QUIT and the system call). | |
120 | To immediately quit in the case in which a SIGINT happens between | |
121 | the previous QUIT and setting immediate_quit (desirable anytime we | |
122 | expect to block), call QUIT after setting immediate_quit. */ | |
123 | ||
124 | int immediate_quit; | |
125 | ||
c906108c SS |
126 | /* Nonzero means that strings with character values >0x7F should be printed |
127 | as octal escapes. Zero means just print the value (e.g. it's an | |
128 | international character, and the terminal or window can cope.) */ | |
129 | ||
130 | int sevenbit_strings = 0; | |
920d2a44 AC |
131 | static void |
132 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
133 | struct cmd_list_element *c, const char *value) | |
134 | { | |
3e43a32a MS |
135 | fprintf_filtered (file, _("Printing of 8-bit characters " |
136 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
137 | value); |
138 | } | |
c906108c | 139 | |
c906108c SS |
140 | /* String to be printed before warning messages, if any. */ |
141 | ||
142 | char *warning_pre_print = "\nwarning: "; | |
143 | ||
144 | int pagination_enabled = 1; | |
920d2a44 AC |
145 | static void |
146 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
147 | struct cmd_list_element *c, const char *value) | |
148 | { | |
149 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
150 | } | |
151 | ||
c906108c | 152 | \f |
c27f5738 | 153 | /* Cleanup utilities. |
c5aa993b | 154 | |
c27f5738 DE |
155 | These are not defined in cleanups.c (nor declared in cleanups.h) |
156 | because while they use the "cleanup API" they are not part of the | |
157 | "cleanup API". */ | |
7a292a7a | 158 | |
7a292a7a | 159 | static void |
fba45db2 | 160 | do_freeargv (void *arg) |
7a292a7a | 161 | { |
c5aa993b | 162 | freeargv ((char **) arg); |
7a292a7a SS |
163 | } |
164 | ||
165 | struct cleanup * | |
fba45db2 | 166 | make_cleanup_freeargv (char **arg) |
7a292a7a | 167 | { |
e0088cfd | 168 | return make_cleanup (do_freeargv, arg); |
7a292a7a SS |
169 | } |
170 | ||
5a56e9c5 DE |
171 | static void |
172 | do_dyn_string_delete (void *arg) | |
173 | { | |
174 | dyn_string_delete ((dyn_string_t) arg); | |
175 | } | |
176 | ||
177 | struct cleanup * | |
178 | make_cleanup_dyn_string_delete (dyn_string_t arg) | |
179 | { | |
e0088cfd | 180 | return make_cleanup (do_dyn_string_delete, arg); |
5a56e9c5 DE |
181 | } |
182 | ||
5c65bbb6 AC |
183 | static void |
184 | do_bfd_close_cleanup (void *arg) | |
185 | { | |
cbb099e8 | 186 | gdb_bfd_unref (arg); |
5c65bbb6 AC |
187 | } |
188 | ||
189 | struct cleanup * | |
f9a062ff | 190 | make_cleanup_bfd_unref (bfd *abfd) |
5c65bbb6 AC |
191 | { |
192 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
193 | } | |
194 | ||
f5ff8c83 AC |
195 | static void |
196 | do_close_cleanup (void *arg) | |
197 | { | |
f042532c | 198 | int *fd = arg; |
e0627e85 | 199 | |
f042532c | 200 | close (*fd); |
f5ff8c83 AC |
201 | } |
202 | ||
203 | struct cleanup * | |
204 | make_cleanup_close (int fd) | |
205 | { | |
f042532c | 206 | int *saved_fd = xmalloc (sizeof (fd)); |
e0627e85 | 207 | |
f042532c | 208 | *saved_fd = fd; |
a05016c0 | 209 | return make_cleanup_dtor (do_close_cleanup, saved_fd, xfree); |
f5ff8c83 AC |
210 | } |
211 | ||
7c8a8b04 TT |
212 | /* Helper function which does the work for make_cleanup_fclose. */ |
213 | ||
214 | static void | |
215 | do_fclose_cleanup (void *arg) | |
216 | { | |
c02866a0 | 217 | FILE *file = arg; |
e0627e85 | 218 | |
c02866a0 | 219 | fclose (file); |
7c8a8b04 TT |
220 | } |
221 | ||
222 | /* Return a new cleanup that closes FILE. */ | |
223 | ||
224 | struct cleanup * | |
225 | make_cleanup_fclose (FILE *file) | |
226 | { | |
227 | return make_cleanup (do_fclose_cleanup, file); | |
228 | } | |
229 | ||
16ad9370 TT |
230 | /* Helper function which does the work for make_cleanup_obstack_free. */ |
231 | ||
232 | static void | |
233 | do_obstack_free (void *arg) | |
234 | { | |
235 | struct obstack *ob = arg; | |
e0627e85 | 236 | |
16ad9370 TT |
237 | obstack_free (ob, NULL); |
238 | } | |
239 | ||
240 | /* Return a new cleanup that frees OBSTACK. */ | |
241 | ||
242 | struct cleanup * | |
243 | make_cleanup_obstack_free (struct obstack *obstack) | |
244 | { | |
245 | return make_cleanup (do_obstack_free, obstack); | |
246 | } | |
247 | ||
11cf8741 | 248 | static void |
d9fcf2fb | 249 | do_ui_file_delete (void *arg) |
11cf8741 | 250 | { |
d9fcf2fb | 251 | ui_file_delete (arg); |
11cf8741 JM |
252 | } |
253 | ||
254 | struct cleanup * | |
d9fcf2fb | 255 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 256 | { |
e0088cfd | 257 | return make_cleanup (do_ui_file_delete, arg); |
11cf8741 JM |
258 | } |
259 | ||
8d4d924b JK |
260 | /* Helper function for make_cleanup_ui_out_redirect_pop. */ |
261 | ||
262 | static void | |
263 | do_ui_out_redirect_pop (void *arg) | |
264 | { | |
265 | struct ui_out *uiout = arg; | |
266 | ||
267 | if (ui_out_redirect (uiout, NULL) < 0) | |
268 | warning (_("Cannot restore redirection of the current output protocol")); | |
269 | } | |
270 | ||
271 | /* Return a new cleanup that pops the last redirection by ui_out_redirect | |
272 | with NULL parameter. */ | |
273 | ||
274 | struct cleanup * | |
275 | make_cleanup_ui_out_redirect_pop (struct ui_out *uiout) | |
276 | { | |
e0088cfd | 277 | return make_cleanup (do_ui_out_redirect_pop, uiout); |
8d4d924b JK |
278 | } |
279 | ||
7b90c3f9 JB |
280 | static void |
281 | do_free_section_addr_info (void *arg) | |
282 | { | |
283 | free_section_addr_info (arg); | |
284 | } | |
285 | ||
286 | struct cleanup * | |
287 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
288 | { | |
e0088cfd | 289 | return make_cleanup (do_free_section_addr_info, addrs); |
7b90c3f9 JB |
290 | } |
291 | ||
0b080f59 VP |
292 | struct restore_integer_closure |
293 | { | |
294 | int *variable; | |
295 | int value; | |
296 | }; | |
297 | ||
298 | static void | |
299 | restore_integer (void *p) | |
300 | { | |
301 | struct restore_integer_closure *closure = p; | |
e0627e85 | 302 | |
0b080f59 VP |
303 | *(closure->variable) = closure->value; |
304 | } | |
7b90c3f9 | 305 | |
3e43a32a MS |
306 | /* Remember the current value of *VARIABLE and make it restored when |
307 | the cleanup is run. */ | |
5da1313b | 308 | |
c906108c | 309 | struct cleanup * |
0b080f59 VP |
310 | make_cleanup_restore_integer (int *variable) |
311 | { | |
312 | struct restore_integer_closure *c = | |
313 | xmalloc (sizeof (struct restore_integer_closure)); | |
e0627e85 | 314 | |
0b080f59 VP |
315 | c->variable = variable; |
316 | c->value = *variable; | |
317 | ||
e0088cfd | 318 | return make_cleanup_dtor (restore_integer, (void *) c, xfree); |
0b080f59 VP |
319 | } |
320 | ||
3e43a32a MS |
321 | /* Remember the current value of *VARIABLE and make it restored when |
322 | the cleanup is run. */ | |
5da1313b JK |
323 | |
324 | struct cleanup * | |
325 | make_cleanup_restore_uinteger (unsigned int *variable) | |
326 | { | |
327 | return make_cleanup_restore_integer ((int *) variable); | |
328 | } | |
329 | ||
c0edd9ed JK |
330 | /* Helper for make_cleanup_unpush_target. */ |
331 | ||
332 | static void | |
333 | do_unpush_target (void *arg) | |
334 | { | |
335 | struct target_ops *ops = arg; | |
336 | ||
337 | unpush_target (ops); | |
338 | } | |
339 | ||
340 | /* Return a new cleanup that unpushes OPS. */ | |
341 | ||
342 | struct cleanup * | |
343 | make_cleanup_unpush_target (struct target_ops *ops) | |
344 | { | |
e0088cfd | 345 | return make_cleanup (do_unpush_target, ops); |
c0edd9ed JK |
346 | } |
347 | ||
8e3b41a9 JK |
348 | /* Helper for make_cleanup_htab_delete compile time checking the types. */ |
349 | ||
350 | static void | |
351 | do_htab_delete_cleanup (void *htab_voidp) | |
352 | { | |
353 | htab_t htab = htab_voidp; | |
354 | ||
355 | htab_delete (htab); | |
356 | } | |
357 | ||
358 | /* Return a new cleanup that deletes HTAB. */ | |
359 | ||
360 | struct cleanup * | |
361 | make_cleanup_htab_delete (htab_t htab) | |
362 | { | |
363 | return make_cleanup (do_htab_delete_cleanup, htab); | |
364 | } | |
365 | ||
5da1313b JK |
366 | struct restore_ui_file_closure |
367 | { | |
368 | struct ui_file **variable; | |
369 | struct ui_file *value; | |
370 | }; | |
371 | ||
372 | static void | |
373 | do_restore_ui_file (void *p) | |
374 | { | |
375 | struct restore_ui_file_closure *closure = p; | |
376 | ||
377 | *(closure->variable) = closure->value; | |
378 | } | |
379 | ||
380 | /* Remember the current value of *VARIABLE and make it restored when | |
381 | the cleanup is run. */ | |
382 | ||
383 | struct cleanup * | |
384 | make_cleanup_restore_ui_file (struct ui_file **variable) | |
385 | { | |
386 | struct restore_ui_file_closure *c = XNEW (struct restore_ui_file_closure); | |
387 | ||
388 | c->variable = variable; | |
389 | c->value = *variable; | |
390 | ||
391 | return make_cleanup_dtor (do_restore_ui_file, (void *) c, xfree); | |
392 | } | |
393 | ||
028d0ed5 TJB |
394 | /* Helper for make_cleanup_value_free_to_mark. */ |
395 | ||
396 | static void | |
397 | do_value_free_to_mark (void *value) | |
398 | { | |
399 | value_free_to_mark ((struct value *) value); | |
400 | } | |
401 | ||
402 | /* Free all values allocated since MARK was obtained by value_mark | |
403 | (except for those released) when the cleanup is run. */ | |
404 | ||
405 | struct cleanup * | |
406 | make_cleanup_value_free_to_mark (struct value *mark) | |
407 | { | |
e0088cfd | 408 | return make_cleanup (do_value_free_to_mark, mark); |
028d0ed5 TJB |
409 | } |
410 | ||
72fc29ff TT |
411 | /* Helper for make_cleanup_value_free. */ |
412 | ||
413 | static void | |
414 | do_value_free (void *value) | |
415 | { | |
416 | value_free (value); | |
417 | } | |
418 | ||
419 | /* Free VALUE. */ | |
420 | ||
421 | struct cleanup * | |
422 | make_cleanup_value_free (struct value *value) | |
423 | { | |
e0088cfd | 424 | return make_cleanup (do_value_free, value); |
72fc29ff TT |
425 | } |
426 | ||
cb08cc53 JK |
427 | /* Helper for make_cleanup_free_so. */ |
428 | ||
429 | static void | |
430 | do_free_so (void *arg) | |
431 | { | |
432 | struct so_list *so = arg; | |
433 | ||
434 | free_so (so); | |
435 | } | |
436 | ||
437 | /* Make cleanup handler calling free_so for SO. */ | |
438 | ||
439 | struct cleanup * | |
440 | make_cleanup_free_so (struct so_list *so) | |
441 | { | |
e0088cfd | 442 | return make_cleanup (do_free_so, so); |
cb08cc53 JK |
443 | } |
444 | ||
5b12a61c JK |
445 | /* Helper for make_cleanup_restore_current_language. */ |
446 | ||
447 | static void | |
448 | do_restore_current_language (void *p) | |
449 | { | |
450 | enum language saved_lang = (uintptr_t) p; | |
451 | ||
452 | set_language (saved_lang); | |
453 | } | |
454 | ||
455 | /* Remember the current value of CURRENT_LANGUAGE and make it restored when | |
456 | the cleanup is run. */ | |
457 | ||
458 | struct cleanup * | |
459 | make_cleanup_restore_current_language (void) | |
460 | { | |
461 | enum language saved_lang = current_language->la_language; | |
462 | ||
463 | return make_cleanup (do_restore_current_language, | |
464 | (void *) (uintptr_t) saved_lang); | |
465 | } | |
466 | ||
410a0ff2 SDJ |
467 | /* Helper function for make_cleanup_clear_parser_state. */ |
468 | ||
469 | static void | |
470 | do_clear_parser_state (void *ptr) | |
471 | { | |
472 | struct parser_state **p = (struct parser_state **) ptr; | |
473 | ||
474 | *p = NULL; | |
475 | } | |
476 | ||
477 | /* Clean (i.e., set to NULL) the parser state variable P. */ | |
478 | ||
479 | struct cleanup * | |
480 | make_cleanup_clear_parser_state (struct parser_state **p) | |
481 | { | |
482 | return make_cleanup (do_clear_parser_state, (void *) p); | |
483 | } | |
484 | ||
c906108c SS |
485 | /* This function is useful for cleanups. |
486 | Do | |
487 | ||
c5aa993b JM |
488 | foo = xmalloc (...); |
489 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
490 | |
491 | to arrange to free the object thus allocated. */ | |
492 | ||
493 | void | |
2f9429ae | 494 | free_current_contents (void *ptr) |
c906108c | 495 | { |
2f9429ae | 496 | void **location = ptr; |
e0627e85 | 497 | |
e2f9c474 | 498 | if (location == NULL) |
8e65ff28 | 499 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 500 | _("free_current_contents: NULL pointer")); |
2f9429ae | 501 | if (*location != NULL) |
e2f9c474 | 502 | { |
b8c9b27d | 503 | xfree (*location); |
e2f9c474 AC |
504 | *location = NULL; |
505 | } | |
c906108c | 506 | } |
c906108c | 507 | \f |
c5aa993b | 508 | |
8731e58e | 509 | |
f5a96129 AC |
510 | /* Print a warning message. The first argument STRING is the warning |
511 | message, used as an fprintf format string, the second is the | |
512 | va_list of arguments for that string. A warning is unfiltered (not | |
513 | paginated) so that the user does not need to page through each | |
514 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
515 | |
516 | void | |
f5a96129 | 517 | vwarning (const char *string, va_list args) |
c906108c | 518 | { |
9a4105ab AC |
519 | if (deprecated_warning_hook) |
520 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
521 | else |
522 | { | |
0d2f5c07 GB |
523 | if (target_supports_terminal_ours ()) |
524 | target_terminal_ours (); | |
525 | if (filtered_printing_initialized ()) | |
526 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
527 | gdb_flush (gdb_stdout); |
528 | if (warning_pre_print) | |
306d9ac5 | 529 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
530 | vfprintf_unfiltered (gdb_stderr, string, args); |
531 | fprintf_unfiltered (gdb_stderr, "\n"); | |
f5a96129 | 532 | } |
c906108c SS |
533 | } |
534 | ||
c906108c SS |
535 | /* Print an error message and return to command level. |
536 | The first argument STRING is the error message, used as a fprintf string, | |
537 | and the remaining args are passed as arguments to it. */ | |
538 | ||
c25c4a8b | 539 | void |
4ce44c66 JM |
540 | verror (const char *string, va_list args) |
541 | { | |
6b1b7650 | 542 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
543 | } |
544 | ||
c25c4a8b | 545 | void |
d75e3c94 | 546 | error_stream (struct ui_file *stream) |
2acceee2 | 547 | { |
759ef836 | 548 | char *message = ui_file_xstrdup (stream, NULL); |
e0627e85 | 549 | |
6b1b7650 | 550 | make_cleanup (xfree, message); |
8a3fe4f8 | 551 | error (("%s"), message); |
2acceee2 | 552 | } |
c906108c | 553 | |
2437fd32 GB |
554 | /* Emit a message and abort. */ |
555 | ||
556 | static void ATTRIBUTE_NORETURN | |
557 | abort_with_message (const char *msg) | |
558 | { | |
559 | if (gdb_stderr == NULL) | |
560 | fputs (msg, stderr); | |
561 | else | |
562 | fputs_unfiltered (msg, gdb_stderr); | |
563 | ||
564 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
565 | } | |
566 | ||
7991dee7 JK |
567 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
568 | ||
eae7090b | 569 | void |
7991dee7 JK |
570 | dump_core (void) |
571 | { | |
572 | #ifdef HAVE_SETRLIMIT | |
573 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
574 | ||
575 | setrlimit (RLIMIT_CORE, &rlim); | |
576 | #endif /* HAVE_SETRLIMIT */ | |
577 | ||
578 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
579 | } | |
580 | ||
3e43a32a | 581 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
582 | function. Returns zero if GDB cannot or should not dump core. |
583 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
584 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 585 | |
eae7090b GB |
586 | int |
587 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
588 | { |
589 | #ifdef HAVE_GETRLIMIT | |
590 | struct rlimit rlim; | |
591 | ||
592 | /* Be quiet and assume we can dump if an error is returned. */ | |
593 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
594 | return 1; | |
595 | ||
eae7090b | 596 | switch (limit_kind) |
7991dee7 | 597 | { |
eae7090b GB |
598 | case LIMIT_CUR: |
599 | if (rlim.rlim_cur == 0) | |
600 | return 0; | |
601 | ||
602 | case LIMIT_MAX: | |
603 | if (rlim.rlim_max == 0) | |
604 | return 0; | |
7991dee7 JK |
605 | } |
606 | #endif /* HAVE_GETRLIMIT */ | |
607 | ||
608 | return 1; | |
609 | } | |
610 | ||
eae7090b GB |
611 | /* Print a warning that we cannot dump core. */ |
612 | ||
613 | void | |
614 | warn_cant_dump_core (const char *reason) | |
615 | { | |
616 | fprintf_unfiltered (gdb_stderr, | |
617 | _("%s\nUnable to dump core, use `ulimit -c" | |
618 | " unlimited' before executing GDB next time.\n"), | |
619 | reason); | |
620 | } | |
621 | ||
622 | /* Check whether GDB will be able to dump core using the dump_core | |
623 | function, and print a warning if we cannot. */ | |
624 | ||
625 | static int | |
626 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
627 | const char *reason) | |
628 | { | |
629 | int core_dump_allowed = can_dump_core (limit_kind); | |
630 | ||
631 | if (!core_dump_allowed) | |
632 | warn_cant_dump_core (reason); | |
633 | ||
634 | return core_dump_allowed; | |
635 | } | |
636 | ||
3c16cced PA |
637 | /* Allow the user to configure the debugger behavior with respect to |
638 | what to do when an internal problem is detected. */ | |
639 | ||
640 | const char internal_problem_ask[] = "ask"; | |
641 | const char internal_problem_yes[] = "yes"; | |
642 | const char internal_problem_no[] = "no"; | |
40478521 | 643 | static const char *const internal_problem_modes[] = |
3c16cced PA |
644 | { |
645 | internal_problem_ask, | |
646 | internal_problem_yes, | |
647 | internal_problem_no, | |
648 | NULL | |
649 | }; | |
3c16cced | 650 | |
581e13c1 | 651 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
652 | if they want to continue, dump core, or just exit. Return |
653 | something to indicate a quit. */ | |
c906108c | 654 | |
dec43320 | 655 | struct internal_problem |
c906108c | 656 | { |
dec43320 | 657 | const char *name; |
57fcfb1b | 658 | int user_settable_should_quit; |
3c16cced | 659 | const char *should_quit; |
57fcfb1b | 660 | int user_settable_should_dump_core; |
3c16cced | 661 | const char *should_dump_core; |
dec43320 AC |
662 | }; |
663 | ||
664 | /* Report a problem, internal to GDB, to the user. Once the problem | |
665 | has been reported, and assuming GDB didn't quit, the caller can | |
666 | either allow execution to resume or throw an error. */ | |
667 | ||
a0b31db1 | 668 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 669 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 670 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 671 | { |
dec43320 | 672 | static int dejavu; |
375fc983 | 673 | int quit_p; |
7be570e7 | 674 | int dump_core_p; |
714b1282 | 675 | char *reason; |
48be7c1b | 676 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
c906108c | 677 | |
dec43320 | 678 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
679 | { |
680 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 681 | |
714b1282 AC |
682 | switch (dejavu) |
683 | { | |
684 | case 0: | |
685 | dejavu = 1; | |
686 | break; | |
687 | case 1: | |
688 | dejavu = 2; | |
2437fd32 | 689 | abort_with_message (msg); |
714b1282 AC |
690 | default: |
691 | dejavu = 3; | |
bf1d7d9c JB |
692 | /* Newer GLIBC versions put the warn_unused_result attribute |
693 | on write, but this is one of those rare cases where | |
694 | ignoring the return value is correct. Casting to (void) | |
695 | does not fix this problem. This is the solution suggested | |
696 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
697 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 698 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
699 | exit (1); |
700 | } | |
701 | } | |
c906108c | 702 | |
714b1282 AC |
703 | /* Create a string containing the full error/warning message. Need |
704 | to call query with this full string, as otherwize the reason | |
705 | (error/warning) and question become separated. Format using a | |
706 | style similar to a compiler error message. Include extra detail | |
707 | so that the user knows that they are living on the edge. */ | |
708 | { | |
709 | char *msg; | |
5d502164 | 710 | |
e623b504 | 711 | msg = xstrvprintf (fmt, ap); |
3e43a32a MS |
712 | reason = xstrprintf ("%s:%d: %s: %s\n" |
713 | "A problem internal to GDB has been detected,\n" | |
714 | "further debugging may prove unreliable.", | |
715 | file, line, problem->name, msg); | |
714b1282 AC |
716 | xfree (msg); |
717 | make_cleanup (xfree, reason); | |
718 | } | |
7be570e7 | 719 | |
2437fd32 GB |
720 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
721 | if (gdb_stderr == NULL) | |
722 | { | |
723 | fputs (reason, stderr); | |
724 | abort_with_message ("\n"); | |
725 | } | |
726 | ||
727 | /* Try to get the message out and at the start of a new line. */ | |
728 | if (target_supports_terminal_ours ()) | |
729 | target_terminal_ours (); | |
730 | if (filtered_printing_initialized ()) | |
731 | begin_line (); | |
732 | ||
196a707b | 733 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
734 | if (problem->should_quit != internal_problem_ask |
735 | || !confirm | |
736 | || !filtered_printing_initialized ()) | |
196a707b GB |
737 | fprintf_unfiltered (gdb_stderr, "%s\n", reason); |
738 | ||
3c16cced | 739 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 740 | { |
dec43320 | 741 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
742 | this lessens the likelihood of GDB going into an infinite |
743 | loop. */ | |
2437fd32 | 744 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 745 | quit_p = 1; |
26bb68be PP |
746 | else |
747 | quit_p = query (_("%s\nQuit this debugging session? "), reason); | |
dec43320 | 748 | } |
3c16cced PA |
749 | else if (problem->should_quit == internal_problem_yes) |
750 | quit_p = 1; | |
751 | else if (problem->should_quit == internal_problem_no) | |
752 | quit_p = 0; | |
753 | else | |
754 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 755 | |
add6c04d GB |
756 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
757 | if (REPORT_BUGS_TO[0]) | |
758 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
759 | REPORT_BUGS_TO); | |
760 | fputs_unfiltered ("\n\n", gdb_stderr); | |
761 | ||
3c16cced | 762 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 763 | { |
eae7090b | 764 | if (!can_dump_core_warn (LIMIT_MAX, reason)) |
7991dee7 | 765 | dump_core_p = 0; |
2437fd32 GB |
766 | else if (!filtered_printing_initialized ()) |
767 | dump_core_p = 1; | |
7991dee7 JK |
768 | else |
769 | { | |
770 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
771 | `dropping' so that it is easier to see that something went | |
772 | wrong in GDB. */ | |
773 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); | |
774 | } | |
dec43320 | 775 | } |
3c16cced | 776 | else if (problem->should_dump_core == internal_problem_yes) |
eae7090b | 777 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason); |
3c16cced PA |
778 | else if (problem->should_dump_core == internal_problem_no) |
779 | dump_core_p = 0; | |
780 | else | |
781 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 782 | |
375fc983 | 783 | if (quit_p) |
7be570e7 JM |
784 | { |
785 | if (dump_core_p) | |
7991dee7 | 786 | dump_core (); |
375fc983 AC |
787 | else |
788 | exit (1); | |
7be570e7 JM |
789 | } |
790 | else | |
791 | { | |
792 | if (dump_core_p) | |
375fc983 | 793 | { |
9b265ec2 | 794 | #ifdef HAVE_WORKING_FORK |
375fc983 | 795 | if (fork () == 0) |
7991dee7 | 796 | dump_core (); |
9b265ec2 | 797 | #endif |
375fc983 | 798 | } |
7be570e7 | 799 | } |
96baa820 JM |
800 | |
801 | dejavu = 0; | |
48be7c1b | 802 | do_cleanups (cleanup); |
dec43320 AC |
803 | } |
804 | ||
805 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 806 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
807 | }; |
808 | ||
c25c4a8b | 809 | void |
8731e58e | 810 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
811 | { |
812 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 813 | throw_quit (_("Command aborted.")); |
c906108c SS |
814 | } |
815 | ||
dec43320 | 816 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 817 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
818 | }; |
819 | ||
820 | void | |
8731e58e | 821 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
822 | { |
823 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
824 | } | |
825 | ||
57fcfb1b GB |
826 | static struct internal_problem demangler_warning_problem = { |
827 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
828 | }; | |
829 | ||
830 | void | |
831 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
832 | { | |
833 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
834 | } | |
835 | ||
836 | void | |
837 | demangler_warning (const char *file, int line, const char *string, ...) | |
838 | { | |
839 | va_list ap; | |
840 | ||
841 | va_start (ap, string); | |
842 | demangler_vwarning (file, line, string, ap); | |
843 | va_end (ap); | |
844 | } | |
845 | ||
3c16cced PA |
846 | /* Dummy functions to keep add_prefix_cmd happy. */ |
847 | ||
848 | static void | |
849 | set_internal_problem_cmd (char *args, int from_tty) | |
850 | { | |
851 | } | |
852 | ||
853 | static void | |
854 | show_internal_problem_cmd (char *args, int from_tty) | |
855 | { | |
856 | } | |
857 | ||
858 | /* When GDB reports an internal problem (error or warning) it gives | |
859 | the user the opportunity to quit GDB and/or create a core file of | |
860 | the current debug session. This function registers a few commands | |
861 | that make it possible to specify that GDB should always or never | |
862 | quit or create a core file, without asking. The commands look | |
863 | like: | |
864 | ||
865 | maint set PROBLEM-NAME quit ask|yes|no | |
866 | maint show PROBLEM-NAME quit | |
867 | maint set PROBLEM-NAME corefile ask|yes|no | |
868 | maint show PROBLEM-NAME corefile | |
869 | ||
870 | Where PROBLEM-NAME is currently "internal-error" or | |
871 | "internal-warning". */ | |
872 | ||
873 | static void | |
874 | add_internal_problem_command (struct internal_problem *problem) | |
875 | { | |
876 | struct cmd_list_element **set_cmd_list; | |
877 | struct cmd_list_element **show_cmd_list; | |
878 | char *set_doc; | |
879 | char *show_doc; | |
880 | ||
881 | set_cmd_list = xmalloc (sizeof (*set_cmd_list)); | |
882 | show_cmd_list = xmalloc (sizeof (*set_cmd_list)); | |
883 | *set_cmd_list = NULL; | |
884 | *show_cmd_list = NULL; | |
885 | ||
886 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
887 | problem->name); | |
888 | ||
889 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
890 | problem->name); | |
891 | ||
892 | add_prefix_cmd ((char*) problem->name, | |
893 | class_maintenance, set_internal_problem_cmd, set_doc, | |
894 | set_cmd_list, | |
c4f7c687 MK |
895 | concat ("maintenance set ", problem->name, " ", |
896 | (char *) NULL), | |
3c16cced PA |
897 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
898 | ||
899 | add_prefix_cmd ((char*) problem->name, | |
900 | class_maintenance, show_internal_problem_cmd, show_doc, | |
901 | show_cmd_list, | |
c4f7c687 MK |
902 | concat ("maintenance show ", problem->name, " ", |
903 | (char *) NULL), | |
3c16cced PA |
904 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
905 | ||
57fcfb1b GB |
906 | if (problem->user_settable_should_quit) |
907 | { | |
908 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
909 | "when an %s is detected"), | |
910 | problem->name); | |
911 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
912 | "when an %s is detected"), | |
913 | problem->name); | |
914 | add_setshow_enum_cmd ("quit", class_maintenance, | |
915 | internal_problem_modes, | |
916 | &problem->should_quit, | |
917 | set_doc, | |
918 | show_doc, | |
919 | NULL, /* help_doc */ | |
920 | NULL, /* setfunc */ | |
921 | NULL, /* showfunc */ | |
922 | set_cmd_list, | |
923 | show_cmd_list); | |
924 | ||
925 | xfree (set_doc); | |
926 | xfree (show_doc); | |
927 | } | |
1eefb858 | 928 | |
57fcfb1b GB |
929 | if (problem->user_settable_should_dump_core) |
930 | { | |
931 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
932 | "file of GDB when %s is detected"), | |
933 | problem->name); | |
934 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
935 | "file of GDB when %s is detected"), | |
936 | problem->name); | |
937 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
938 | internal_problem_modes, | |
939 | &problem->should_dump_core, | |
940 | set_doc, | |
941 | show_doc, | |
942 | NULL, /* help_doc */ | |
943 | NULL, /* setfunc */ | |
944 | NULL, /* showfunc */ | |
945 | set_cmd_list, | |
946 | show_cmd_list); | |
947 | ||
948 | xfree (set_doc); | |
949 | xfree (show_doc); | |
950 | } | |
3c16cced PA |
951 | } |
952 | ||
0cf4063e JB |
953 | /* Return a newly allocated string, containing the PREFIX followed |
954 | by the system error message for errno (separated by a colon). | |
955 | ||
956 | The result must be deallocated after use. */ | |
957 | ||
958 | static char * | |
959 | perror_string (const char *prefix) | |
960 | { | |
961 | char *err; | |
962 | char *combined; | |
963 | ||
964 | err = safe_strerror (errno); | |
965 | combined = (char *) xmalloc (strlen (err) + strlen (prefix) + 3); | |
966 | strcpy (combined, prefix); | |
967 | strcat (combined, ": "); | |
968 | strcat (combined, err); | |
969 | ||
970 | return combined; | |
971 | } | |
972 | ||
c906108c | 973 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
974 | as the file name for which the error was encountered. Use ERRCODE |
975 | for the thrown exception. Then return to command level. */ | |
c906108c | 976 | |
c25c4a8b | 977 | void |
598d3636 | 978 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 979 | { |
c906108c SS |
980 | char *combined; |
981 | ||
0cf4063e JB |
982 | combined = perror_string (string); |
983 | make_cleanup (xfree, combined); | |
c906108c SS |
984 | |
985 | /* I understand setting these is a matter of taste. Still, some people | |
986 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 987 | unreasonable. */ |
c906108c SS |
988 | bfd_set_error (bfd_error_no_error); |
989 | errno = 0; | |
990 | ||
598d3636 JK |
991 | throw_error (errcode, _("%s."), combined); |
992 | } | |
993 | ||
994 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
995 | ||
996 | void | |
997 | perror_with_name (const char *string) | |
998 | { | |
999 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
1000 | } |
1001 | ||
7c647d61 JB |
1002 | /* Same as perror_with_name except that it prints a warning instead |
1003 | of throwing an error. */ | |
1004 | ||
1005 | void | |
1006 | perror_warning_with_name (const char *string) | |
1007 | { | |
1008 | char *combined; | |
1009 | ||
1010 | combined = perror_string (string); | |
1011 | warning (_("%s"), combined); | |
1012 | xfree (combined); | |
1013 | } | |
1014 | ||
c906108c SS |
1015 | /* Print the system error message for ERRCODE, and also mention STRING |
1016 | as the file name for which the error was encountered. */ | |
1017 | ||
1018 | void | |
6972bc8b | 1019 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
1020 | { |
1021 | char *err; | |
1022 | char *combined; | |
1023 | ||
1024 | err = safe_strerror (errcode); | |
1025 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
1026 | strcpy (combined, string); | |
1027 | strcat (combined, ": "); | |
1028 | strcat (combined, err); | |
1029 | ||
1030 | /* We want anything which was printed on stdout to come out first, before | |
1031 | this message. */ | |
1032 | gdb_flush (gdb_stdout); | |
1033 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
1034 | } | |
1035 | ||
1036 | /* Control C eventually causes this to be called, at a convenient time. */ | |
1037 | ||
1038 | void | |
fba45db2 | 1039 | quit (void) |
c906108c | 1040 | { |
06c868a8 JK |
1041 | if (sync_quit_force_run) |
1042 | { | |
1043 | sync_quit_force_run = 0; | |
1044 | quit_force (NULL, stdin == instream); | |
1045 | } | |
1046 | ||
7be570e7 JM |
1047 | #ifdef __MSDOS__ |
1048 | /* No steenking SIGINT will ever be coming our way when the | |
1049 | program is resumed. Don't lie. */ | |
2c51604d | 1050 | throw_quit ("Quit"); |
7be570e7 | 1051 | #else |
c906108c | 1052 | if (job_control |
8731e58e AC |
1053 | /* If there is no terminal switching for this target, then we can't |
1054 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 1055 | || !target_supports_terminal_ours ()) |
2c51604d | 1056 | throw_quit ("Quit"); |
c906108c | 1057 | else |
2c51604d | 1058 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 1059 | #endif |
c906108c SS |
1060 | } |
1061 | ||
c906108c | 1062 | \f |
c906108c | 1063 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 1064 | memory requested in SIZE. */ |
c906108c | 1065 | |
c25c4a8b | 1066 | void |
d26e3629 | 1067 | malloc_failure (long size) |
c906108c SS |
1068 | { |
1069 | if (size > 0) | |
1070 | { | |
8e65ff28 | 1071 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1072 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 1073 | size); |
c906108c SS |
1074 | } |
1075 | else | |
1076 | { | |
e2e0b3e5 | 1077 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
1078 | } |
1079 | } | |
1080 | ||
c906108c SS |
1081 | /* My replacement for the read system call. |
1082 | Used like `read' but keeps going if `read' returns too soon. */ | |
1083 | ||
1084 | int | |
fba45db2 | 1085 | myread (int desc, char *addr, int len) |
c906108c | 1086 | { |
52f0bd74 | 1087 | int val; |
c906108c SS |
1088 | int orglen = len; |
1089 | ||
1090 | while (len > 0) | |
1091 | { | |
1092 | val = read (desc, addr, len); | |
1093 | if (val < 0) | |
1094 | return val; | |
1095 | if (val == 0) | |
1096 | return orglen - len; | |
1097 | len -= val; | |
1098 | addr += val; | |
1099 | } | |
1100 | return orglen; | |
1101 | } | |
d26e3629 | 1102 | |
c906108c | 1103 | void |
aa1ee363 | 1104 | print_spaces (int n, struct ui_file *file) |
c906108c | 1105 | { |
392a587b | 1106 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1107 | } |
1108 | ||
1109 | /* Print a host address. */ | |
1110 | ||
1111 | void | |
ac16bf07 | 1112 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
c906108c | 1113 | { |
ea8992ce | 1114 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 1115 | } |
c906108c | 1116 | \f |
c5aa993b | 1117 | |
dc92e161 TT |
1118 | /* A cleanup function that calls regfree. */ |
1119 | ||
1120 | static void | |
1121 | do_regfree_cleanup (void *r) | |
1122 | { | |
1123 | regfree (r); | |
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); | |
1141 | char *result = xmalloc (length); | |
1142 | ||
1143 | regerror (code, rx, result, length); | |
1144 | return result; | |
1145 | } | |
1146 | ||
cc16e6c9 | 1147 | /* Compile a regexp and throw an exception on error. This returns a |
db26349c TT |
1148 | cleanup to free the resulting pattern on success. RX must not be |
1149 | NULL. */ | |
cc16e6c9 TT |
1150 | |
1151 | struct cleanup * | |
1152 | compile_rx_or_error (regex_t *pattern, const char *rx, const char *message) | |
1153 | { | |
1154 | int code; | |
1155 | ||
db26349c | 1156 | gdb_assert (rx != NULL); |
cc16e6c9 TT |
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 | ||
dc92e161 TT |
1170 | \f |
1171 | ||
981c7f5a | 1172 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 1173 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
1174 | answer is yes, or default the answer to the specified default |
1175 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
1176 | default answer, or '\0' for no default. | |
cbdeadca JJ |
1177 | CTLSTR is the control string and should end in "? ". It should |
1178 | not say how to answer, because we do that. | |
1179 | ARGS are the arguments passed along with the CTLSTR argument to | |
1180 | printf. */ | |
1181 | ||
a0b31db1 | 1182 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
1183 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
1184 | { | |
1185 | int answer; | |
1186 | int ans2; | |
1187 | int retval; | |
1188 | int def_value; | |
1189 | char def_answer, not_def_answer; | |
981c7f5a | 1190 | char *y_string, *n_string, *question; |
260c0b2a DE |
1191 | /* Used to add duration we waited for user to respond to |
1192 | prompt_for_continue_wait_time. */ | |
1193 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
cbdeadca JJ |
1194 | |
1195 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
1196 | if (defchar == '\0') |
1197 | { | |
1198 | def_value = 1; | |
1199 | def_answer = 'Y'; | |
1200 | not_def_answer = 'N'; | |
1201 | y_string = "y"; | |
1202 | n_string = "n"; | |
1203 | } | |
1204 | else if (defchar == 'y') | |
cbdeadca JJ |
1205 | { |
1206 | def_value = 1; | |
1207 | def_answer = 'Y'; | |
1208 | not_def_answer = 'N'; | |
1209 | y_string = "[y]"; | |
1210 | n_string = "n"; | |
1211 | } | |
1212 | else | |
1213 | { | |
1214 | def_value = 0; | |
1215 | def_answer = 'N'; | |
1216 | not_def_answer = 'Y'; | |
1217 | y_string = "y"; | |
1218 | n_string = "[n]"; | |
1219 | } | |
1220 | ||
981c7f5a | 1221 | /* Automatically answer the default value if the user did not want |
a502cf95 | 1222 | prompts or the command was issued with the server prefix. */ |
e360902b | 1223 | if (!confirm || server_command) |
981c7f5a DJ |
1224 | return def_value; |
1225 | ||
1226 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 1227 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
1228 | way, important error messages don't get lost when talking to GDB |
1229 | over a pipe. */ | |
c63a1f86 | 1230 | if (! input_from_terminal_p ()) |
981c7f5a DJ |
1231 | { |
1232 | wrap_here (""); | |
1233 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1234 | ||
3e43a32a MS |
1235 | printf_filtered (_("(%s or %s) [answered %c; " |
1236 | "input not from terminal]\n"), | |
981c7f5a DJ |
1237 | y_string, n_string, def_answer); |
1238 | gdb_flush (gdb_stdout); | |
1239 | ||
1240 | return def_value; | |
1241 | } | |
1242 | ||
9a4105ab | 1243 | if (deprecated_query_hook) |
cbdeadca | 1244 | { |
9a4105ab | 1245 | return deprecated_query_hook (ctlstr, args); |
cbdeadca JJ |
1246 | } |
1247 | ||
981c7f5a DJ |
1248 | /* Format the question outside of the loop, to avoid reusing args. */ |
1249 | question = xstrvprintf (ctlstr, args); | |
1250 | ||
260c0b2a DE |
1251 | /* Used for calculating time spend waiting for user. */ |
1252 | gettimeofday (&prompt_started, NULL); | |
1253 | ||
cbdeadca JJ |
1254 | while (1) |
1255 | { | |
581e13c1 | 1256 | wrap_here (""); /* Flush any buffered output. */ |
cbdeadca JJ |
1257 | gdb_flush (gdb_stdout); |
1258 | ||
1259 | if (annotation_level > 1) | |
a3f17187 | 1260 | printf_filtered (("\n\032\032pre-query\n")); |
cbdeadca | 1261 | |
981c7f5a | 1262 | fputs_filtered (question, gdb_stdout); |
a3f17187 | 1263 | printf_filtered (_("(%s or %s) "), y_string, n_string); |
cbdeadca JJ |
1264 | |
1265 | if (annotation_level > 1) | |
a3f17187 | 1266 | printf_filtered (("\n\032\032query\n")); |
cbdeadca JJ |
1267 | |
1268 | wrap_here (""); | |
1269 | gdb_flush (gdb_stdout); | |
1270 | ||
1271 | answer = fgetc (stdin); | |
8626589c JB |
1272 | |
1273 | /* We expect fgetc to block until a character is read. But | |
1274 | this may not be the case if the terminal was opened with | |
1275 | the NONBLOCK flag. In that case, if there is nothing to | |
1276 | read on stdin, fgetc returns EOF, but also sets the error | |
1277 | condition flag on stdin and errno to EAGAIN. With a true | |
1278 | EOF, stdin's error condition flag is not set. | |
1279 | ||
1280 | A situation where this behavior was observed is a pseudo | |
1281 | terminal on AIX. */ | |
1282 | while (answer == EOF && ferror (stdin) && errno == EAGAIN) | |
1283 | { | |
1284 | /* Not a real EOF. Wait a little while and try again until | |
1285 | we read something. */ | |
1286 | clearerr (stdin); | |
1287 | gdb_usleep (10000); | |
1288 | answer = fgetc (stdin); | |
1289 | } | |
1290 | ||
cbdeadca JJ |
1291 | clearerr (stdin); /* in case of C-d */ |
1292 | if (answer == EOF) /* C-d */ | |
1293 | { | |
fa3fd85b | 1294 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1295 | retval = def_value; |
1296 | break; | |
1297 | } | |
581e13c1 | 1298 | /* Eat rest of input line, to EOF or newline. */ |
cbdeadca JJ |
1299 | if (answer != '\n') |
1300 | do | |
1301 | { | |
1302 | ans2 = fgetc (stdin); | |
1303 | clearerr (stdin); | |
1304 | } | |
1305 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); | |
1306 | ||
1307 | if (answer >= 'a') | |
1308 | answer -= 040; | |
1309 | /* Check answer. For the non-default, the user must specify | |
1310 | the non-default explicitly. */ | |
1311 | if (answer == not_def_answer) | |
1312 | { | |
1313 | retval = !def_value; | |
1314 | break; | |
1315 | } | |
981c7f5a DJ |
1316 | /* Otherwise, if a default was specified, the user may either |
1317 | specify the required input or have it default by entering | |
1318 | nothing. */ | |
1319 | if (answer == def_answer | |
1320 | || (defchar != '\0' && | |
1321 | (answer == '\n' || answer == '\r' || answer == EOF))) | |
cbdeadca JJ |
1322 | { |
1323 | retval = def_value; | |
1324 | break; | |
1325 | } | |
1326 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1327 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1328 | y_string, n_string); |
1329 | } | |
1330 | ||
260c0b2a DE |
1331 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1332 | gettimeofday (&prompt_ended, NULL); | |
1333 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1334 | timeval_add (&prompt_for_continue_wait_time, | |
1335 | &prompt_for_continue_wait_time, &prompt_delta); | |
1336 | ||
981c7f5a | 1337 | xfree (question); |
cbdeadca | 1338 | if (annotation_level > 1) |
a3f17187 | 1339 | printf_filtered (("\n\032\032post-query\n")); |
cbdeadca JJ |
1340 | return retval; |
1341 | } | |
1342 | \f | |
1343 | ||
1344 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1345 | answer is yes, or 0 if answer is defaulted. | |
1346 | Takes three args which are given to printf to print the question. | |
1347 | The first, a control string, should end in "? ". | |
1348 | It should not say how to answer, because we do that. */ | |
1349 | ||
1350 | int | |
1351 | nquery (const char *ctlstr, ...) | |
1352 | { | |
1353 | va_list args; | |
899500d6 | 1354 | int ret; |
cbdeadca JJ |
1355 | |
1356 | va_start (args, ctlstr); | |
899500d6 | 1357 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1358 | va_end (args); |
899500d6 | 1359 | return ret; |
cbdeadca JJ |
1360 | } |
1361 | ||
1362 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1363 | answer is yes, or 1 if answer is defaulted. | |
1364 | Takes three args which are given to printf to print the question. | |
1365 | The first, a control string, should end in "? ". | |
1366 | It should not say how to answer, because we do that. */ | |
1367 | ||
1368 | int | |
1369 | yquery (const char *ctlstr, ...) | |
1370 | { | |
1371 | va_list args; | |
899500d6 | 1372 | int ret; |
cbdeadca JJ |
1373 | |
1374 | va_start (args, ctlstr); | |
899500d6 | 1375 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1376 | va_end (args); |
899500d6 | 1377 | return ret; |
cbdeadca JJ |
1378 | } |
1379 | ||
981c7f5a DJ |
1380 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1381 | Takes three args which are given to printf to print the question. | |
1382 | The first, a control string, should end in "? ". | |
1383 | It should not say how to answer, because we do that. */ | |
1384 | ||
1385 | int | |
1386 | query (const char *ctlstr, ...) | |
1387 | { | |
1388 | va_list args; | |
899500d6 | 1389 | int ret; |
981c7f5a DJ |
1390 | |
1391 | va_start (args, ctlstr); | |
899500d6 | 1392 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1393 | va_end (args); |
899500d6 | 1394 | return ret; |
981c7f5a DJ |
1395 | } |
1396 | ||
6c7a06a3 TT |
1397 | /* A helper for parse_escape that converts a host character to a |
1398 | target character. C is the host character. If conversion is | |
1399 | possible, then the target character is stored in *TARGET_C and the | |
1400 | function returns 1. Otherwise, the function returns 0. */ | |
1401 | ||
1402 | static int | |
f870a310 | 1403 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1404 | { |
6c7a06a3 TT |
1405 | struct obstack host_data; |
1406 | char the_char = c; | |
1407 | struct cleanup *cleanups; | |
1408 | int result = 0; | |
234b45d4 | 1409 | |
6c7a06a3 TT |
1410 | obstack_init (&host_data); |
1411 | cleanups = make_cleanup_obstack_free (&host_data); | |
234b45d4 | 1412 | |
f870a310 | 1413 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1414 | (gdb_byte *) &the_char, 1, 1, |
1415 | &host_data, translit_none); | |
6c7a06a3 TT |
1416 | |
1417 | if (obstack_object_size (&host_data) == 1) | |
1418 | { | |
1419 | result = 1; | |
1420 | *target_c = *(char *) obstack_base (&host_data); | |
1421 | } | |
1422 | ||
1423 | do_cleanups (cleanups); | |
1424 | return result; | |
234b45d4 KB |
1425 | } |
1426 | ||
c906108c SS |
1427 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1428 | containing a pointer to the string to parse. That pointer | |
1429 | should point to the character after the \. That pointer | |
1430 | is updated past the characters we use. The value of the | |
1431 | escape sequence is returned. | |
1432 | ||
1433 | A negative value means the sequence \ newline was seen, | |
1434 | which is supposed to be equivalent to nothing at all. | |
1435 | ||
1436 | If \ is followed by a null character, we return a negative | |
1437 | value and leave the string pointer pointing at the null character. | |
1438 | ||
1439 | If \ is followed by 000, we return 0 and leave the string pointer | |
1440 | after the zeros. A value of 0 does not mean end of string. */ | |
1441 | ||
1442 | int | |
d7561cbb | 1443 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1444 | { |
581e13c1 | 1445 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1446 | int c = *(*string_ptr)++; |
e0627e85 | 1447 | |
6c7a06a3 TT |
1448 | switch (c) |
1449 | { | |
8731e58e AC |
1450 | case '\n': |
1451 | return -2; | |
1452 | case 0: | |
1453 | (*string_ptr)--; | |
1454 | return 0; | |
8731e58e AC |
1455 | |
1456 | case '0': | |
1457 | case '1': | |
1458 | case '2': | |
1459 | case '3': | |
1460 | case '4': | |
1461 | case '5': | |
1462 | case '6': | |
1463 | case '7': | |
1464 | { | |
6c7a06a3 | 1465 | int i = host_hex_value (c); |
aa1ee363 | 1466 | int count = 0; |
8731e58e AC |
1467 | while (++count < 3) |
1468 | { | |
5cb316ef | 1469 | c = (**string_ptr); |
6c7a06a3 | 1470 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1471 | { |
5cb316ef | 1472 | (*string_ptr)++; |
8731e58e | 1473 | i *= 8; |
6c7a06a3 | 1474 | i += host_hex_value (c); |
8731e58e AC |
1475 | } |
1476 | else | |
1477 | { | |
8731e58e AC |
1478 | break; |
1479 | } | |
1480 | } | |
1481 | return i; | |
1482 | } | |
6c7a06a3 TT |
1483 | |
1484 | case 'a': | |
1485 | c = '\a'; | |
1486 | break; | |
1487 | case 'b': | |
1488 | c = '\b'; | |
1489 | break; | |
1490 | case 'f': | |
1491 | c = '\f'; | |
1492 | break; | |
1493 | case 'n': | |
1494 | c = '\n'; | |
1495 | break; | |
1496 | case 'r': | |
1497 | c = '\r'; | |
1498 | break; | |
1499 | case 't': | |
1500 | c = '\t'; | |
1501 | break; | |
1502 | case 'v': | |
1503 | c = '\v'; | |
1504 | break; | |
1505 | ||
1506 | default: | |
1507 | break; | |
1508 | } | |
1509 | ||
f870a310 | 1510 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1511 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1512 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1513 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1514 | return target_char; |
c906108c SS |
1515 | } |
1516 | \f | |
1517 | /* Print the character C on STREAM as part of the contents of a literal | |
1518 | string whose delimiter is QUOTER. Note that this routine should only | |
1519 | be call for printing things which are independent of the language | |
6ef284bd SM |
1520 | of the program being debugged. |
1521 | ||
1522 | printchar will normally escape backslashes and instances of QUOTER. If | |
1523 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1524 | As a side effect, if you pass the backslash character as the QUOTER, | |
1525 | printchar will escape backslashes as usual, but not any other quoting | |
1526 | character. */ | |
c906108c | 1527 | |
43e526b9 | 1528 | static void |
74f832da | 1529 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1530 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1531 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1532 | { |
c906108c SS |
1533 | c &= 0xFF; /* Avoid sign bit follies */ |
1534 | ||
c5aa993b JM |
1535 | if (c < 0x20 || /* Low control chars */ |
1536 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1537 | (sevenbit_strings && c >= 0x80)) | |
1538 | { /* high order bit set */ | |
1539 | switch (c) | |
1540 | { | |
1541 | case '\n': | |
43e526b9 | 1542 | do_fputs ("\\n", stream); |
c5aa993b JM |
1543 | break; |
1544 | case '\b': | |
43e526b9 | 1545 | do_fputs ("\\b", stream); |
c5aa993b JM |
1546 | break; |
1547 | case '\t': | |
43e526b9 | 1548 | do_fputs ("\\t", stream); |
c5aa993b JM |
1549 | break; |
1550 | case '\f': | |
43e526b9 | 1551 | do_fputs ("\\f", stream); |
c5aa993b JM |
1552 | break; |
1553 | case '\r': | |
43e526b9 | 1554 | do_fputs ("\\r", stream); |
c5aa993b JM |
1555 | break; |
1556 | case '\033': | |
43e526b9 | 1557 | do_fputs ("\\e", stream); |
c5aa993b JM |
1558 | break; |
1559 | case '\007': | |
43e526b9 | 1560 | do_fputs ("\\a", stream); |
c5aa993b JM |
1561 | break; |
1562 | default: | |
43e526b9 | 1563 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1564 | break; |
1565 | } | |
1566 | } | |
1567 | else | |
1568 | { | |
6ef284bd | 1569 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1570 | do_fputs ("\\", stream); |
1571 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1572 | } |
c906108c | 1573 | } |
43e526b9 JM |
1574 | |
1575 | /* Print the character C on STREAM as part of the contents of a | |
1576 | literal string whose delimiter is QUOTER. Note that these routines | |
1577 | should only be call for printing things which are independent of | |
581e13c1 | 1578 | the language of the program being debugged. */ |
43e526b9 JM |
1579 | |
1580 | void | |
fba45db2 | 1581 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1582 | { |
1583 | while (*str) | |
1584 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1585 | } | |
1586 | ||
1587 | void | |
fba45db2 | 1588 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1589 | { |
1590 | while (*str) | |
1591 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1592 | } | |
1593 | ||
0876f84a DJ |
1594 | void |
1595 | fputstrn_filtered (const char *str, int n, int quoter, | |
1596 | struct ui_file *stream) | |
1597 | { | |
1598 | int i; | |
e0627e85 | 1599 | |
0876f84a DJ |
1600 | for (i = 0; i < n; i++) |
1601 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1602 | } | |
1603 | ||
43e526b9 | 1604 | void |
8731e58e AC |
1605 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1606 | struct ui_file *stream) | |
43e526b9 JM |
1607 | { |
1608 | int i; | |
5d502164 | 1609 | |
43e526b9 JM |
1610 | for (i = 0; i < n; i++) |
1611 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1612 | } | |
c906108c | 1613 | \f |
c5aa993b | 1614 | |
c906108c SS |
1615 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1616 | static unsigned int lines_per_page; | |
920d2a44 AC |
1617 | static void |
1618 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1619 | struct cmd_list_element *c, const char *value) | |
1620 | { | |
3e43a32a MS |
1621 | fprintf_filtered (file, |
1622 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1623 | value); |
1624 | } | |
eb0d3137 | 1625 | |
cbfbd72a | 1626 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1627 | static unsigned int chars_per_line; |
920d2a44 AC |
1628 | static void |
1629 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1630 | struct cmd_list_element *c, const char *value) | |
1631 | { | |
3e43a32a MS |
1632 | fprintf_filtered (file, |
1633 | _("Number of characters gdb thinks " | |
1634 | "are in a line is %s.\n"), | |
920d2a44 AC |
1635 | value); |
1636 | } | |
eb0d3137 | 1637 | |
c906108c SS |
1638 | /* Current count of lines printed on this page, chars on this line. */ |
1639 | static unsigned int lines_printed, chars_printed; | |
1640 | ||
1641 | /* Buffer and start column of buffered text, for doing smarter word- | |
1642 | wrapping. When someone calls wrap_here(), we start buffering output | |
1643 | that comes through fputs_filtered(). If we see a newline, we just | |
1644 | spit it out and forget about the wrap_here(). If we see another | |
1645 | wrap_here(), we spit it out and remember the newer one. If we see | |
1646 | the end of the line, we spit out a newline, the indent, and then | |
1647 | the buffered output. */ | |
1648 | ||
1649 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1650 | are waiting to be output (they have already been counted in chars_printed). | |
1651 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1652 | static char *wrap_buffer; | |
1653 | ||
1654 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1655 | static char *wrap_pointer; | |
1656 | ||
1657 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1658 | is non-zero. */ | |
1659 | static char *wrap_indent; | |
1660 | ||
1661 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1662 | is not in effect. */ | |
1663 | static int wrap_column; | |
c906108c | 1664 | \f |
c5aa993b | 1665 | |
eb0d3137 MK |
1666 | /* Inialize the number of lines per page and chars per line. */ |
1667 | ||
c906108c | 1668 | void |
fba45db2 | 1669 | init_page_info (void) |
c906108c | 1670 | { |
5da1313b JK |
1671 | if (batch_flag) |
1672 | { | |
1673 | lines_per_page = UINT_MAX; | |
1674 | chars_per_line = UINT_MAX; | |
1675 | } | |
1676 | else | |
c906108c | 1677 | #if defined(TUI) |
5ecb1806 | 1678 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1679 | #endif |
1680 | { | |
eb0d3137 | 1681 | int rows, cols; |
c906108c | 1682 | |
ec145965 EZ |
1683 | #if defined(__GO32__) |
1684 | rows = ScreenRows (); | |
1685 | cols = ScreenCols (); | |
1686 | lines_per_page = rows; | |
1687 | chars_per_line = cols; | |
1688 | #else | |
eb0d3137 MK |
1689 | /* Make sure Readline has initialized its terminal settings. */ |
1690 | rl_reset_terminal (NULL); | |
c906108c | 1691 | |
eb0d3137 MK |
1692 | /* Get the screen size from Readline. */ |
1693 | rl_get_screen_size (&rows, &cols); | |
1694 | lines_per_page = rows; | |
1695 | chars_per_line = cols; | |
c906108c | 1696 | |
1a66331e PM |
1697 | /* Readline should have fetched the termcap entry for us. |
1698 | Only try to use tgetnum function if rl_get_screen_size | |
1699 | did not return a useful value. */ | |
1700 | if (((rows <= 0) && (tgetnum ("li") < 0)) | |
1701 | /* Also disable paging if inside EMACS. */ | |
1702 | || getenv ("EMACS")) | |
eb0d3137 | 1703 | { |
1a66331e PM |
1704 | /* The number of lines per page is not mentioned in the terminal |
1705 | description or EMACS evironment variable is set. This probably | |
1706 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1707 | lines_per_page = UINT_MAX; |
1708 | } | |
c906108c | 1709 | |
c906108c | 1710 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1711 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1712 | lines_per_page = UINT_MAX; |
eb0d3137 | 1713 | #endif |
ec145965 | 1714 | } |
eb0d3137 MK |
1715 | |
1716 | set_screen_size (); | |
c5aa993b | 1717 | set_width (); |
c906108c SS |
1718 | } |
1719 | ||
2437fd32 GB |
1720 | /* Return nonzero if filtered printing is initialized. */ |
1721 | int | |
1722 | filtered_printing_initialized (void) | |
1723 | { | |
1724 | return wrap_buffer != NULL; | |
1725 | } | |
1726 | ||
5da1313b JK |
1727 | /* Helper for make_cleanup_restore_page_info. */ |
1728 | ||
1729 | static void | |
1730 | do_restore_page_info_cleanup (void *arg) | |
1731 | { | |
1732 | set_screen_size (); | |
1733 | set_width (); | |
1734 | } | |
1735 | ||
1736 | /* Provide cleanup for restoring the terminal size. */ | |
1737 | ||
1738 | struct cleanup * | |
1739 | make_cleanup_restore_page_info (void) | |
1740 | { | |
1741 | struct cleanup *back_to; | |
1742 | ||
1743 | back_to = make_cleanup (do_restore_page_info_cleanup, NULL); | |
1744 | make_cleanup_restore_uinteger (&lines_per_page); | |
1745 | make_cleanup_restore_uinteger (&chars_per_line); | |
1746 | ||
1747 | return back_to; | |
1748 | } | |
1749 | ||
1750 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. | |
1751 | Provide cleanup for restoring the original state. */ | |
1752 | ||
1753 | struct cleanup * | |
1754 | set_batch_flag_and_make_cleanup_restore_page_info (void) | |
1755 | { | |
1756 | struct cleanup *back_to = make_cleanup_restore_page_info (); | |
1757 | ||
1758 | make_cleanup_restore_integer (&batch_flag); | |
1759 | batch_flag = 1; | |
1760 | init_page_info (); | |
1761 | ||
1762 | return back_to; | |
1763 | } | |
1764 | ||
eb0d3137 MK |
1765 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1766 | ||
1767 | static void | |
1768 | set_screen_size (void) | |
1769 | { | |
1770 | int rows = lines_per_page; | |
1771 | int cols = chars_per_line; | |
1772 | ||
1773 | if (rows <= 0) | |
1774 | rows = INT_MAX; | |
1775 | ||
1776 | if (cols <= 0) | |
0caa462c | 1777 | cols = INT_MAX; |
eb0d3137 MK |
1778 | |
1779 | /* Update Readline's idea of the terminal size. */ | |
1780 | rl_set_screen_size (rows, cols); | |
1781 | } | |
1782 | ||
1783 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1784 | CHARS_PER_LINE. */ | |
1785 | ||
c906108c | 1786 | static void |
fba45db2 | 1787 | set_width (void) |
c906108c SS |
1788 | { |
1789 | if (chars_per_line == 0) | |
c5aa993b | 1790 | init_page_info (); |
c906108c SS |
1791 | |
1792 | if (!wrap_buffer) | |
1793 | { | |
1794 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1795 | wrap_buffer[0] = '\0'; | |
1796 | } | |
1797 | else | |
1798 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1799 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1800 | } |
1801 | ||
c5aa993b | 1802 | static void |
fba45db2 | 1803 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1804 | { |
eb0d3137 | 1805 | set_screen_size (); |
c906108c SS |
1806 | set_width (); |
1807 | } | |
1808 | ||
eb0d3137 MK |
1809 | static void |
1810 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1811 | { | |
1812 | set_screen_size (); | |
1813 | } | |
1814 | ||
c906108c SS |
1815 | /* Wait, so the user can read what's on the screen. Prompt the user |
1816 | to continue by pressing RETURN. */ | |
1817 | ||
1818 | static void | |
fba45db2 | 1819 | prompt_for_continue (void) |
c906108c SS |
1820 | { |
1821 | char *ignore; | |
1822 | char cont_prompt[120]; | |
260c0b2a DE |
1823 | /* Used to add duration we waited for user to respond to |
1824 | prompt_for_continue_wait_time. */ | |
1825 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
1826 | ||
1827 | gettimeofday (&prompt_started, NULL); | |
c906108c SS |
1828 | |
1829 | if (annotation_level > 1) | |
a3f17187 | 1830 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1831 | |
1832 | strcpy (cont_prompt, | |
1833 | "---Type <return> to continue, or q <return> to quit---"); | |
1834 | if (annotation_level > 1) | |
1835 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1836 | ||
1837 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1838 | call us -- thinking that we're trying to print beyond the end of the | |
1839 | screen. */ | |
1840 | reinitialize_more_filter (); | |
1841 | ||
1842 | immediate_quit++; | |
522002f9 | 1843 | QUIT; |
82584158 PA |
1844 | |
1845 | /* We'll need to handle input. */ | |
1846 | target_terminal_ours (); | |
1847 | ||
c906108c SS |
1848 | /* On a real operating system, the user can quit with SIGINT. |
1849 | But not on GO32. | |
1850 | ||
1851 | 'q' is provided on all systems so users don't have to change habits | |
1852 | from system to system, and because telling them what to do in | |
1853 | the prompt is more user-friendly than expecting them to think of | |
1854 | SIGINT. */ | |
1855 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1856 | whereas control-C to gdb_readline will cause the user to get dumped | |
1857 | out to DOS. */ | |
b4f5539f | 1858 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c | 1859 | |
260c0b2a DE |
1860 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1861 | gettimeofday (&prompt_ended, NULL); | |
1862 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1863 | timeval_add (&prompt_for_continue_wait_time, | |
1864 | &prompt_for_continue_wait_time, &prompt_delta); | |
1865 | ||
c906108c | 1866 | if (annotation_level > 1) |
a3f17187 | 1867 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c SS |
1868 | |
1869 | if (ignore) | |
1870 | { | |
1871 | char *p = ignore; | |
5d502164 | 1872 | |
c906108c SS |
1873 | while (*p == ' ' || *p == '\t') |
1874 | ++p; | |
1875 | if (p[0] == 'q') | |
522002f9 | 1876 | quit (); |
b8c9b27d | 1877 | xfree (ignore); |
c906108c SS |
1878 | } |
1879 | immediate_quit--; | |
1880 | ||
1881 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1882 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1883 | reinitialize_more_filter (); | |
1884 | ||
581e13c1 | 1885 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
c906108c SS |
1886 | } |
1887 | ||
bd712aed DE |
1888 | /* Initalize timer to keep track of how long we waited for the user. */ |
1889 | ||
1890 | void | |
1891 | reset_prompt_for_continue_wait_time (void) | |
1892 | { | |
1893 | static const struct timeval zero_timeval = { 0 }; | |
1894 | ||
1895 | prompt_for_continue_wait_time = zero_timeval; | |
1896 | } | |
1897 | ||
1898 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1899 | ||
1900 | struct timeval | |
1901 | get_prompt_for_continue_wait_time (void) | |
1902 | { | |
1903 | return prompt_for_continue_wait_time; | |
1904 | } | |
1905 | ||
c906108c SS |
1906 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1907 | ||
1908 | void | |
fba45db2 | 1909 | reinitialize_more_filter (void) |
c906108c SS |
1910 | { |
1911 | lines_printed = 0; | |
1912 | chars_printed = 0; | |
1913 | } | |
1914 | ||
1915 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1916 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1917 | If INDENT is non-null, it is a string to be printed to indent the |
1918 | wrapped part on the next line. INDENT must remain accessible until | |
1919 | the next call to wrap_here() or until a newline is printed through | |
1920 | fputs_filtered(). | |
1921 | ||
1922 | If the line is already overfull, we immediately print a newline and | |
1923 | the indentation, and disable further wrapping. | |
1924 | ||
1925 | If we don't know the width of lines, but we know the page height, | |
1926 | we must not wrap words, but should still keep track of newlines | |
1927 | that were explicitly printed. | |
1928 | ||
1929 | INDENT should not contain tabs, as that will mess up the char count | |
1930 | on the next line. FIXME. | |
1931 | ||
1932 | This routine is guaranteed to force out any output which has been | |
1933 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1934 | used to force out output from the wrap_buffer. */ | |
1935 | ||
1936 | void | |
fba45db2 | 1937 | wrap_here (char *indent) |
c906108c | 1938 | { |
581e13c1 | 1939 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1940 | if (!wrap_buffer) |
3e43a32a MS |
1941 | internal_error (__FILE__, __LINE__, |
1942 | _("failed internal consistency check")); | |
c906108c SS |
1943 | |
1944 | if (wrap_buffer[0]) | |
1945 | { | |
1946 | *wrap_pointer = '\0'; | |
1947 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1948 | } | |
1949 | wrap_pointer = wrap_buffer; | |
1950 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1951 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1952 | { |
1953 | wrap_column = 0; | |
1954 | } | |
1955 | else if (chars_printed >= chars_per_line) | |
1956 | { | |
1957 | puts_filtered ("\n"); | |
1958 | if (indent != NULL) | |
1959 | puts_filtered (indent); | |
1960 | wrap_column = 0; | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | wrap_column = chars_printed; | |
1965 | if (indent == NULL) | |
1966 | wrap_indent = ""; | |
1967 | else | |
1968 | wrap_indent = indent; | |
1969 | } | |
1970 | } | |
1971 | ||
4a351cef | 1972 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1973 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1974 | right or left justified in the column. Never prints |
1975 | trailing spaces. String should never be longer than | |
1976 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1977 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1978 | |
1979 | void | |
1980 | puts_filtered_tabular (char *string, int width, int right) | |
1981 | { | |
1982 | int spaces = 0; | |
1983 | int stringlen; | |
1984 | char *spacebuf; | |
1985 | ||
1986 | gdb_assert (chars_per_line > 0); | |
1987 | if (chars_per_line == UINT_MAX) | |
1988 | { | |
1989 | fputs_filtered (string, gdb_stdout); | |
1990 | fputs_filtered ("\n", gdb_stdout); | |
1991 | return; | |
1992 | } | |
1993 | ||
1994 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1995 | fputs_filtered ("\n", gdb_stdout); | |
1996 | ||
1997 | if (width >= chars_per_line) | |
1998 | width = chars_per_line - 1; | |
1999 | ||
2000 | stringlen = strlen (string); | |
2001 | ||
2002 | if (chars_printed > 0) | |
2003 | spaces = width - (chars_printed - 1) % width - 1; | |
2004 | if (right) | |
2005 | spaces += width - stringlen; | |
2006 | ||
2007 | spacebuf = alloca (spaces + 1); | |
2008 | spacebuf[spaces] = '\0'; | |
2009 | while (spaces--) | |
2010 | spacebuf[spaces] = ' '; | |
2011 | ||
2012 | fputs_filtered (spacebuf, gdb_stdout); | |
2013 | fputs_filtered (string, gdb_stdout); | |
2014 | } | |
2015 | ||
2016 | ||
c906108c | 2017 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 2018 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 2019 | any pending output for the current line, flush it and start a new |
581e13c1 | 2020 | line. Otherwise do nothing. */ |
c906108c SS |
2021 | |
2022 | void | |
fba45db2 | 2023 | begin_line (void) |
c906108c SS |
2024 | { |
2025 | if (chars_printed > 0) | |
2026 | { | |
2027 | puts_filtered ("\n"); | |
2028 | } | |
2029 | } | |
2030 | ||
ac9a91a7 | 2031 | |
c906108c SS |
2032 | /* Like fputs but if FILTER is true, pause after every screenful. |
2033 | ||
2034 | Regardless of FILTER can wrap at points other than the final | |
2035 | character of a line. | |
2036 | ||
2037 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
2038 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
2039 | anything. | |
2040 | ||
2041 | Note that a longjmp to top level may occur in this routine (only if | |
2042 | FILTER is true) (since prompt_for_continue may do so) so this | |
2043 | routine should not be called when cleanups are not in place. */ | |
2044 | ||
2045 | static void | |
fba45db2 KB |
2046 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
2047 | int filter) | |
c906108c SS |
2048 | { |
2049 | const char *lineptr; | |
2050 | ||
2051 | if (linebuffer == 0) | |
2052 | return; | |
2053 | ||
2054 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 2055 | if (stream != gdb_stdout |
b2e7f004 JK |
2056 | || !pagination_enabled |
2057 | || batch_flag | |
390a8aca | 2058 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 2059 | || top_level_interpreter () == NULL |
390a8aca | 2060 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
c906108c SS |
2061 | { |
2062 | fputs_unfiltered (linebuffer, stream); | |
2063 | return; | |
2064 | } | |
2065 | ||
2066 | /* Go through and output each character. Show line extension | |
2067 | when this is necessary; prompt user for new page when this is | |
2068 | necessary. */ | |
c5aa993b | 2069 | |
c906108c SS |
2070 | lineptr = linebuffer; |
2071 | while (*lineptr) | |
2072 | { | |
2073 | /* Possible new page. */ | |
8731e58e | 2074 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
2075 | prompt_for_continue (); |
2076 | ||
2077 | while (*lineptr && *lineptr != '\n') | |
2078 | { | |
2079 | /* Print a single line. */ | |
2080 | if (*lineptr == '\t') | |
2081 | { | |
2082 | if (wrap_column) | |
2083 | *wrap_pointer++ = '\t'; | |
2084 | else | |
2085 | fputc_unfiltered ('\t', stream); | |
2086 | /* Shifting right by 3 produces the number of tab stops | |
2087 | we have already passed, and then adding one and | |
c5aa993b | 2088 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
2089 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
2090 | lineptr++; | |
2091 | } | |
2092 | else | |
2093 | { | |
2094 | if (wrap_column) | |
2095 | *wrap_pointer++ = *lineptr; | |
2096 | else | |
c5aa993b | 2097 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
2098 | chars_printed++; |
2099 | lineptr++; | |
2100 | } | |
c5aa993b | 2101 | |
c906108c SS |
2102 | if (chars_printed >= chars_per_line) |
2103 | { | |
2104 | unsigned int save_chars = chars_printed; | |
2105 | ||
2106 | chars_printed = 0; | |
2107 | lines_printed++; | |
2108 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
2109 | if chars_per_line is right, we probably just overflowed |
2110 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
2111 | if (wrap_column) |
2112 | fputc_unfiltered ('\n', stream); | |
2113 | ||
2114 | /* Possible new page. */ | |
2115 | if (lines_printed >= lines_per_page - 1) | |
2116 | prompt_for_continue (); | |
2117 | ||
581e13c1 | 2118 | /* Now output indentation and wrapped string. */ |
c906108c SS |
2119 | if (wrap_column) |
2120 | { | |
2121 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
2122 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
2123 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
2124 | /* FIXME, this strlen is what prevents wrap_indent from |
2125 | containing tabs. However, if we recurse to print it | |
2126 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 2127 | longer than (the user settable) chars_per_line. |
c906108c SS |
2128 | Note also that this can set chars_printed > chars_per_line |
2129 | if we are printing a long string. */ | |
2130 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 2131 | + (save_chars - wrap_column); |
c906108c SS |
2132 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
2133 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
2134 | wrap_column = 0; /* And disable fancy wrap */ |
2135 | } | |
c906108c SS |
2136 | } |
2137 | } | |
2138 | ||
2139 | if (*lineptr == '\n') | |
2140 | { | |
2141 | chars_printed = 0; | |
3e43a32a MS |
2142 | wrap_here ((char *) 0); /* Spit out chars, cancel |
2143 | further wraps. */ | |
c906108c SS |
2144 | lines_printed++; |
2145 | fputc_unfiltered ('\n', stream); | |
2146 | lineptr++; | |
2147 | } | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | void | |
fba45db2 | 2152 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
2153 | { |
2154 | fputs_maybe_filtered (linebuffer, stream, 1); | |
2155 | } | |
2156 | ||
2157 | int | |
fba45db2 | 2158 | putchar_unfiltered (int c) |
c906108c | 2159 | { |
11cf8741 | 2160 | char buf = c; |
e0627e85 | 2161 | |
d9fcf2fb | 2162 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
2163 | return c; |
2164 | } | |
2165 | ||
d1f4cff8 AC |
2166 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
2167 | May return nonlocally. */ | |
2168 | ||
2169 | int | |
2170 | putchar_filtered (int c) | |
2171 | { | |
2172 | return fputc_filtered (c, gdb_stdout); | |
2173 | } | |
2174 | ||
c906108c | 2175 | int |
fba45db2 | 2176 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2177 | { |
11cf8741 | 2178 | char buf = c; |
e0627e85 | 2179 | |
d9fcf2fb | 2180 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2181 | return c; |
2182 | } | |
2183 | ||
2184 | int | |
fba45db2 | 2185 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2186 | { |
2187 | char buf[2]; | |
2188 | ||
2189 | buf[0] = c; | |
2190 | buf[1] = 0; | |
2191 | fputs_filtered (buf, stream); | |
2192 | return c; | |
2193 | } | |
2194 | ||
2195 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2196 | characters in printable fashion. */ | |
2197 | ||
2198 | void | |
fba45db2 | 2199 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2200 | { |
2201 | int ch; | |
2202 | ||
2203 | /* Print prefix and suffix after each line. */ | |
2204 | static int new_line = 1; | |
2205 | static int return_p = 0; | |
2206 | static char *prev_prefix = ""; | |
2207 | static char *prev_suffix = ""; | |
2208 | ||
2209 | if (*string == '\n') | |
2210 | return_p = 0; | |
2211 | ||
2212 | /* If the prefix is changing, print the previous suffix, a new line, | |
2213 | and the new prefix. */ | |
c5aa993b | 2214 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2215 | { |
9846de1b JM |
2216 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2217 | fputs_unfiltered ("\n", gdb_stdlog); | |
2218 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2219 | } |
2220 | ||
2221 | /* Print prefix if we printed a newline during the previous call. */ | |
2222 | if (new_line) | |
2223 | { | |
2224 | new_line = 0; | |
9846de1b | 2225 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2226 | } |
2227 | ||
2228 | prev_prefix = prefix; | |
2229 | prev_suffix = suffix; | |
2230 | ||
2231 | /* Output characters in a printable format. */ | |
2232 | while ((ch = *string++) != '\0') | |
2233 | { | |
2234 | switch (ch) | |
c5aa993b | 2235 | { |
c906108c SS |
2236 | default: |
2237 | if (isprint (ch)) | |
9846de1b | 2238 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2239 | |
2240 | else | |
9846de1b | 2241 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2242 | break; |
2243 | ||
c5aa993b JM |
2244 | case '\\': |
2245 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2246 | break; | |
2247 | case '\b': | |
2248 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2249 | break; | |
2250 | case '\f': | |
2251 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2252 | break; | |
2253 | case '\n': | |
2254 | new_line = 1; | |
2255 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2256 | break; | |
2257 | case '\r': | |
2258 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2259 | break; | |
2260 | case '\t': | |
2261 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2262 | break; | |
2263 | case '\v': | |
2264 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2265 | break; | |
2266 | } | |
c906108c SS |
2267 | |
2268 | return_p = ch == '\r'; | |
2269 | } | |
2270 | ||
2271 | /* Print suffix if we printed a newline. */ | |
2272 | if (new_line) | |
2273 | { | |
9846de1b JM |
2274 | fputs_unfiltered (suffix, gdb_stdlog); |
2275 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2276 | } |
2277 | } | |
2278 | ||
2279 | ||
2280 | /* Print a variable number of ARGS using format FORMAT. If this | |
2281 | information is going to put the amount written (since the last call | |
2282 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2283 | call prompt_for_continue to get the users permision to continue. | |
2284 | ||
2285 | Unlike fprintf, this function does not return a value. | |
2286 | ||
2287 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2288 | fprintf (takes a stream to write on), and printf (the usual). | |
2289 | ||
2290 | Note also that a longjmp to top level may occur in this routine | |
2291 | (since prompt_for_continue may do so) so this routine should not be | |
2292 | called when cleanups are not in place. */ | |
2293 | ||
2294 | static void | |
fba45db2 KB |
2295 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2296 | va_list args, int filter) | |
c906108c SS |
2297 | { |
2298 | char *linebuffer; | |
2299 | struct cleanup *old_cleanups; | |
2300 | ||
e623b504 | 2301 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2302 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2303 | fputs_maybe_filtered (linebuffer, stream, filter); |
2304 | do_cleanups (old_cleanups); | |
2305 | } | |
2306 | ||
2307 | ||
2308 | void | |
fba45db2 | 2309 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2310 | { |
2311 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2312 | } | |
2313 | ||
2314 | void | |
fba45db2 | 2315 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2316 | { |
2317 | char *linebuffer; | |
2318 | struct cleanup *old_cleanups; | |
2319 | ||
e623b504 | 2320 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2321 | old_cleanups = make_cleanup (xfree, linebuffer); |
75feb17d DJ |
2322 | if (debug_timestamp && stream == gdb_stdlog) |
2323 | { | |
2324 | struct timeval tm; | |
2325 | char *timestamp; | |
6e5abd65 | 2326 | int len, need_nl; |
75feb17d DJ |
2327 | |
2328 | gettimeofday (&tm, NULL); | |
6e5abd65 PA |
2329 | |
2330 | len = strlen (linebuffer); | |
2331 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); | |
2332 | ||
2333 | timestamp = xstrprintf ("%ld:%ld %s%s", | |
2334 | (long) tm.tv_sec, (long) tm.tv_usec, | |
2335 | linebuffer, | |
2336 | need_nl ? "\n": ""); | |
75feb17d DJ |
2337 | make_cleanup (xfree, timestamp); |
2338 | fputs_unfiltered (timestamp, stream); | |
2339 | } | |
6e5abd65 PA |
2340 | else |
2341 | fputs_unfiltered (linebuffer, stream); | |
c906108c SS |
2342 | do_cleanups (old_cleanups); |
2343 | } | |
2344 | ||
2345 | void | |
fba45db2 | 2346 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2347 | { |
2348 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2349 | } | |
2350 | ||
2351 | void | |
fba45db2 | 2352 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2353 | { |
2354 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2355 | } | |
2356 | ||
c906108c | 2357 | void |
8731e58e | 2358 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2359 | { |
2360 | va_list args; | |
e0627e85 | 2361 | |
c906108c | 2362 | va_start (args, format); |
c906108c SS |
2363 | vfprintf_filtered (stream, format, args); |
2364 | va_end (args); | |
2365 | } | |
2366 | ||
c906108c | 2367 | void |
8731e58e | 2368 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2369 | { |
2370 | va_list args; | |
e0627e85 | 2371 | |
c906108c | 2372 | va_start (args, format); |
c906108c SS |
2373 | vfprintf_unfiltered (stream, format, args); |
2374 | va_end (args); | |
2375 | } | |
2376 | ||
2377 | /* Like fprintf_filtered, but prints its result indented. | |
2378 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2379 | ||
c906108c | 2380 | void |
8731e58e AC |
2381 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2382 | ...) | |
c906108c SS |
2383 | { |
2384 | va_list args; | |
e0627e85 | 2385 | |
c906108c | 2386 | va_start (args, format); |
c906108c SS |
2387 | print_spaces_filtered (spaces, stream); |
2388 | ||
2389 | vfprintf_filtered (stream, format, args); | |
2390 | va_end (args); | |
2391 | } | |
2392 | ||
2393 | ||
c906108c | 2394 | void |
8731e58e | 2395 | printf_filtered (const char *format, ...) |
c906108c SS |
2396 | { |
2397 | va_list args; | |
e0627e85 | 2398 | |
c906108c | 2399 | va_start (args, format); |
c906108c SS |
2400 | vfprintf_filtered (gdb_stdout, format, args); |
2401 | va_end (args); | |
2402 | } | |
2403 | ||
2404 | ||
c906108c | 2405 | void |
8731e58e | 2406 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2407 | { |
2408 | va_list args; | |
e0627e85 | 2409 | |
c906108c | 2410 | va_start (args, format); |
c906108c SS |
2411 | vfprintf_unfiltered (gdb_stdout, format, args); |
2412 | va_end (args); | |
2413 | } | |
2414 | ||
2415 | /* Like printf_filtered, but prints it's result indented. | |
2416 | Called as printfi_filtered (spaces, format, ...); */ | |
2417 | ||
c906108c | 2418 | void |
8731e58e | 2419 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2420 | { |
2421 | va_list args; | |
e0627e85 | 2422 | |
c906108c | 2423 | va_start (args, format); |
c906108c SS |
2424 | print_spaces_filtered (spaces, gdb_stdout); |
2425 | vfprintf_filtered (gdb_stdout, format, args); | |
2426 | va_end (args); | |
2427 | } | |
2428 | ||
2429 | /* Easy -- but watch out! | |
2430 | ||
2431 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2432 | This one doesn't, and had better not! */ | |
2433 | ||
2434 | void | |
fba45db2 | 2435 | puts_filtered (const char *string) |
c906108c SS |
2436 | { |
2437 | fputs_filtered (string, gdb_stdout); | |
2438 | } | |
2439 | ||
2440 | void | |
fba45db2 | 2441 | puts_unfiltered (const char *string) |
c906108c SS |
2442 | { |
2443 | fputs_unfiltered (string, gdb_stdout); | |
2444 | } | |
2445 | ||
2446 | /* Return a pointer to N spaces and a null. The pointer is good | |
2447 | until the next call to here. */ | |
2448 | char * | |
fba45db2 | 2449 | n_spaces (int n) |
c906108c | 2450 | { |
392a587b JM |
2451 | char *t; |
2452 | static char *spaces = 0; | |
2453 | static int max_spaces = -1; | |
c906108c SS |
2454 | |
2455 | if (n > max_spaces) | |
2456 | { | |
2457 | if (spaces) | |
b8c9b27d | 2458 | xfree (spaces); |
c5aa993b JM |
2459 | spaces = (char *) xmalloc (n + 1); |
2460 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2461 | *--t = ' '; |
2462 | spaces[n] = '\0'; | |
2463 | max_spaces = n; | |
2464 | } | |
2465 | ||
2466 | return spaces + max_spaces - n; | |
2467 | } | |
2468 | ||
2469 | /* Print N spaces. */ | |
2470 | void | |
fba45db2 | 2471 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2472 | { |
2473 | fputs_filtered (n_spaces (n), stream); | |
2474 | } | |
2475 | \f | |
4a351cef | 2476 | /* C++/ObjC demangler stuff. */ |
c906108c | 2477 | |
389e51db AC |
2478 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2479 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2480 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2481 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2482 | |
2483 | void | |
0d5cff50 | 2484 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2485 | enum language lang, int arg_mode) |
c906108c SS |
2486 | { |
2487 | char *demangled; | |
2488 | ||
2489 | if (name != NULL) | |
2490 | { | |
2491 | /* If user wants to see raw output, no problem. */ | |
2492 | if (!demangle) | |
2493 | { | |
2494 | fputs_filtered (name, stream); | |
2495 | } | |
2496 | else | |
2497 | { | |
9a3d7dfd | 2498 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2499 | fputs_filtered (demangled ? demangled : name, stream); |
2500 | if (demangled != NULL) | |
2501 | { | |
b8c9b27d | 2502 | xfree (demangled); |
c906108c SS |
2503 | } |
2504 | } | |
2505 | } | |
2506 | } | |
2507 | ||
2508 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2509 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2510 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2511 | |
c906108c SS |
2512 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2513 | This "feature" is useful when searching for matching C++ function names | |
2514 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
581e13c1 | 2515 | function). */ |
c906108c SS |
2516 | |
2517 | int | |
fba45db2 | 2518 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2519 | { |
2520 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2521 | { | |
2522 | while (isspace (*string1)) | |
2523 | { | |
2524 | string1++; | |
2525 | } | |
2526 | while (isspace (*string2)) | |
2527 | { | |
2528 | string2++; | |
2529 | } | |
559a7a62 JK |
2530 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2531 | break; | |
2532 | if (case_sensitivity == case_sensitive_off | |
2533 | && (tolower ((unsigned char) *string1) | |
2534 | != tolower ((unsigned char) *string2))) | |
2535 | break; | |
c906108c SS |
2536 | if (*string1 != '\0') |
2537 | { | |
2538 | string1++; | |
2539 | string2++; | |
2540 | } | |
2541 | } | |
2542 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2543 | } | |
2de7ced7 | 2544 | |
0fe19209 DC |
2545 | /* This is like strcmp except that it ignores whitespace and treats |
2546 | '(' as the first non-NULL character in terms of ordering. Like | |
2547 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2548 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2549 | according to that ordering. | |
2550 | ||
2551 | If a list is sorted according to this function and if you want to | |
2552 | find names in the list that match some fixed NAME according to | |
2553 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2554 | where this function would put NAME. | |
2555 | ||
559a7a62 JK |
2556 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2557 | may choose it during later lookup. Therefore this function always sorts | |
2558 | primarily case-insensitively and secondarily case-sensitively. | |
2559 | ||
0fe19209 DC |
2560 | Here are some examples of why using strcmp to sort is a bad idea: |
2561 | ||
2562 | Whitespace example: | |
2563 | ||
2564 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2565 | we try to do a search for "foo<char*>", strcmp will locate this | |
2566 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2567 | will start looking at strings beginning with "goo", and will never | |
2568 | see the correct match of "foo<char *>". | |
2569 | ||
2570 | Parenthesis example: | |
2571 | ||
2572 | In practice, this is less like to be an issue, but I'll give it a | |
2573 | shot. Let's assume that '$' is a legitimate character to occur in | |
2574 | symbols. (Which may well even be the case on some systems.) Then | |
2575 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2576 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2577 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2578 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2579 | "foo") is false, so it won't proceed to the actual match of | |
2580 | "foo(int)" with "foo". */ | |
2581 | ||
2582 | int | |
2583 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2584 | { | |
559a7a62 JK |
2585 | const char *saved_string1 = string1, *saved_string2 = string2; |
2586 | enum case_sensitivity case_pass = case_sensitive_off; | |
2587 | ||
2588 | for (;;) | |
0fe19209 | 2589 | { |
b11b1f88 JK |
2590 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2591 | Provide stub characters if we are already at the end of one of the | |
2592 | strings. */ | |
2593 | char c1 = 'X', c2 = 'X'; | |
2594 | ||
2595 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2596 | { |
b11b1f88 JK |
2597 | while (isspace (*string1)) |
2598 | string1++; | |
2599 | while (isspace (*string2)) | |
2600 | string2++; | |
2601 | ||
559a7a62 JK |
2602 | switch (case_pass) |
2603 | { | |
2604 | case case_sensitive_off: | |
2605 | c1 = tolower ((unsigned char) *string1); | |
2606 | c2 = tolower ((unsigned char) *string2); | |
2607 | break; | |
2608 | case case_sensitive_on: | |
b11b1f88 JK |
2609 | c1 = *string1; |
2610 | c2 = *string2; | |
559a7a62 JK |
2611 | break; |
2612 | } | |
b11b1f88 JK |
2613 | if (c1 != c2) |
2614 | break; | |
2615 | ||
2616 | if (*string1 != '\0') | |
2617 | { | |
2618 | string1++; | |
2619 | string2++; | |
2620 | } | |
0fe19209 | 2621 | } |
b11b1f88 JK |
2622 | |
2623 | switch (*string1) | |
0fe19209 | 2624 | { |
b11b1f88 JK |
2625 | /* Characters are non-equal unless they're both '\0'; we want to |
2626 | make sure we get the comparison right according to our | |
2627 | comparison in the cases where one of them is '\0' or '('. */ | |
2628 | case '\0': | |
2629 | if (*string2 == '\0') | |
559a7a62 | 2630 | break; |
b11b1f88 JK |
2631 | else |
2632 | return -1; | |
2633 | case '(': | |
2634 | if (*string2 == '\0') | |
2635 | return 1; | |
2636 | else | |
2637 | return -1; | |
2638 | default: | |
2639 | if (*string2 == '\0' || *string2 == '(') | |
2640 | return 1; | |
559a7a62 JK |
2641 | else if (c1 > c2) |
2642 | return 1; | |
2643 | else if (c1 < c2) | |
2644 | return -1; | |
2645 | /* PASSTHRU */ | |
0fe19209 | 2646 | } |
559a7a62 JK |
2647 | |
2648 | if (case_pass == case_sensitive_on) | |
2649 | return 0; | |
2650 | ||
2651 | /* Otherwise the strings were equal in case insensitive way, make | |
2652 | a more fine grained comparison in a case sensitive way. */ | |
2653 | ||
2654 | case_pass = case_sensitive_on; | |
2655 | string1 = saved_string1; | |
2656 | string2 = saved_string2; | |
0fe19209 | 2657 | } |
0fe19209 DC |
2658 | } |
2659 | ||
2de7ced7 DJ |
2660 | /* A simple comparison function with opposite semantics to strcmp. */ |
2661 | ||
2662 | int | |
2663 | streq (const char *lhs, const char *rhs) | |
2664 | { | |
2665 | return !strcmp (lhs, rhs); | |
2666 | } | |
c906108c | 2667 | \f |
c5aa993b | 2668 | |
c906108c | 2669 | /* |
c5aa993b JM |
2670 | ** subset_compare() |
2671 | ** Answer whether string_to_compare is a full or partial match to | |
2672 | ** template_string. The partial match must be in sequence starting | |
2673 | ** at index 0. | |
2674 | */ | |
c906108c | 2675 | int |
fba45db2 | 2676 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2677 | { |
2678 | int match; | |
e0627e85 | 2679 | |
8731e58e AC |
2680 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2681 | && strlen (string_to_compare) <= strlen (template_string)) | |
2682 | match = | |
2683 | (strncmp | |
2684 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2685 | else |
2686 | match = 0; | |
2687 | return match; | |
2688 | } | |
c906108c | 2689 | |
7a292a7a | 2690 | static void |
fba45db2 | 2691 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2692 | { |
2693 | pagination_enabled = 1; | |
2694 | } | |
2695 | ||
7a292a7a | 2696 | static void |
fba45db2 | 2697 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2698 | { |
2699 | pagination_enabled = 0; | |
2700 | } | |
75feb17d DJ |
2701 | |
2702 | static void | |
2703 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2704 | struct cmd_list_element *c, const char *value) | |
2705 | { | |
3e43a32a MS |
2706 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2707 | value); | |
75feb17d | 2708 | } |
c906108c | 2709 | \f |
c5aa993b | 2710 | |
c906108c | 2711 | void |
fba45db2 | 2712 | initialize_utils (void) |
c906108c | 2713 | { |
35096d9d | 2714 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2715 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2716 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2717 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2718 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2719 | set_width_command, |
920d2a44 | 2720 | show_chars_per_line, |
35096d9d AC |
2721 | &setlist, &showlist); |
2722 | ||
2723 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2724 | Set number of lines in a page for GDB output pagination."), _("\ |
2725 | Show number of lines in a page for GDB output pagination."), _("\ | |
2726 | This affects the number of lines after which GDB will pause\n\ | |
2727 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2728 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2729 | set_height_command, |
920d2a44 | 2730 | show_lines_per_page, |
35096d9d | 2731 | &setlist, &showlist); |
c5aa993b | 2732 | |
c906108c SS |
2733 | init_page_info (); |
2734 | ||
5bf193a2 AC |
2735 | add_setshow_boolean_cmd ("pagination", class_support, |
2736 | &pagination_enabled, _("\ | |
77dec115 EZ |
2737 | Set state of GDB output pagination."), _("\ |
2738 | Show state of GDB output pagination."), _("\ | |
2739 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2740 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2741 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2742 | NULL, |
920d2a44 | 2743 | show_pagination_enabled, |
5bf193a2 | 2744 | &setlist, &showlist); |
4261bedc | 2745 | |
c906108c SS |
2746 | if (xdb_commands) |
2747 | { | |
c5aa993b | 2748 | add_com ("am", class_support, pagination_on_command, |
1bedd215 | 2749 | _("Enable pagination")); |
c5aa993b | 2750 | add_com ("sm", class_support, pagination_off_command, |
1bedd215 | 2751 | _("Disable pagination")); |
c906108c SS |
2752 | } |
2753 | ||
5bf193a2 AC |
2754 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2755 | &sevenbit_strings, _("\ | |
2756 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2757 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2758 | NULL, | |
920d2a44 | 2759 | show_sevenbit_strings, |
5bf193a2 AC |
2760 | &setprintlist, &showprintlist); |
2761 | ||
75feb17d DJ |
2762 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2763 | &debug_timestamp, _("\ | |
2764 | Set timestamping of debugging messages."), _("\ | |
2765 | Show timestamping of debugging messages."), _("\ | |
2766 | When set, debugging messages will be marked with seconds and microseconds."), | |
2767 | NULL, | |
2768 | show_debug_timestamp, | |
2769 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2770 | } |
2771 | ||
66bf4b3a | 2772 | const char * |
5af949e3 | 2773 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2774 | { |
2775 | /* Truncate address to the size of a target address, avoiding shifts | |
2776 | larger or equal than the width of a CORE_ADDR. The local | |
2777 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2778 | when it won't occur. */ |
66bf4b3a AC |
2779 | /* NOTE: This assumes that the significant address information is |
2780 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2781 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2782 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2783 | ||
5af949e3 | 2784 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2785 | |
2786 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2787 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2788 | return hex_string (addr); | |
2789 | } | |
2790 | ||
f1310107 TJB |
2791 | /* This function is described in "defs.h". */ |
2792 | ||
2793 | const char * | |
2794 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2795 | { | |
2796 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2797 | ||
2798 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2799 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2800 | ||
2801 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2802 | that returns the language localized string formatted to a width | |
2803 | based on gdbarch_addr_bit. */ | |
2804 | if (addr_bit <= 32) | |
2805 | return hex_string_custom (address, 8); | |
2806 | else | |
2807 | return hex_string_custom (address, 16); | |
2808 | } | |
2809 | ||
8e3b41a9 JK |
2810 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2811 | ||
2812 | hashval_t | |
2813 | core_addr_hash (const void *ap) | |
2814 | { | |
2815 | const CORE_ADDR *addrp = ap; | |
2816 | ||
2817 | return *addrp; | |
2818 | } | |
2819 | ||
2820 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2821 | ||
2822 | int | |
2823 | core_addr_eq (const void *ap, const void *bp) | |
2824 | { | |
2825 | const CORE_ADDR *addr_ap = ap; | |
2826 | const CORE_ADDR *addr_bp = bp; | |
2827 | ||
2828 | return *addr_ap == *addr_bp; | |
2829 | } | |
2830 | ||
03dd37c3 AC |
2831 | /* Convert a string back into a CORE_ADDR. */ |
2832 | CORE_ADDR | |
2833 | string_to_core_addr (const char *my_string) | |
2834 | { | |
2835 | CORE_ADDR addr = 0; | |
9544c605 | 2836 | |
03dd37c3 AC |
2837 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2838 | { | |
ced572fe | 2839 | /* Assume that it is in hex. */ |
03dd37c3 | 2840 | int i; |
5d502164 | 2841 | |
03dd37c3 AC |
2842 | for (i = 2; my_string[i] != '\0'; i++) |
2843 | { | |
2844 | if (isdigit (my_string[i])) | |
2845 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2846 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2847 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2848 | else | |
63f06803 | 2849 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2850 | } |
2851 | } | |
2852 | else | |
2853 | { | |
2854 | /* Assume that it is in decimal. */ | |
2855 | int i; | |
5d502164 | 2856 | |
03dd37c3 AC |
2857 | for (i = 0; my_string[i] != '\0'; i++) |
2858 | { | |
2859 | if (isdigit (my_string[i])) | |
2860 | addr = (my_string[i] - '0') + (addr * 10); | |
2861 | else | |
63f06803 | 2862 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2863 | } |
2864 | } | |
9544c605 | 2865 | |
03dd37c3 AC |
2866 | return addr; |
2867 | } | |
58d370e0 TT |
2868 | |
2869 | char * | |
2870 | gdb_realpath (const char *filename) | |
2871 | { | |
70d35819 AC |
2872 | /* Method 1: The system has a compile time upper bound on a filename |
2873 | path. Use that and realpath() to canonicalize the name. This is | |
2874 | the most common case. Note that, if there isn't a compile time | |
2875 | upper bound, you want to avoid realpath() at all costs. */ | |
d8d2a3ee | 2876 | #if defined (HAVE_REALPATH) && defined (PATH_MAX) |
70d35819 | 2877 | { |
70d35819 | 2878 | char buf[PATH_MAX]; |
82c0260e | 2879 | const char *rp = realpath (filename, buf); |
5d502164 | 2880 | |
70d35819 AC |
2881 | if (rp == NULL) |
2882 | rp = filename; | |
2883 | return xstrdup (rp); | |
6f88d630 | 2884 | } |
a4db0f07 RH |
2885 | #endif /* HAVE_REALPATH */ |
2886 | ||
70d35819 AC |
2887 | /* Method 2: The host system (i.e., GNU) has the function |
2888 | canonicalize_file_name() which malloc's a chunk of memory and | |
2889 | returns that, use that. */ | |
2890 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2891 | { | |
2892 | char *rp = canonicalize_file_name (filename); | |
5d502164 | 2893 | |
70d35819 AC |
2894 | if (rp == NULL) |
2895 | return xstrdup (filename); | |
2896 | else | |
2897 | return rp; | |
2898 | } | |
58d370e0 | 2899 | #endif |
70d35819 | 2900 | |
6411e720 AC |
2901 | /* FIXME: cagney/2002-11-13: |
2902 | ||
2903 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
7a9dd1b2 | 2904 | to the problems described in method 3, have modified their |
6411e720 AC |
2905 | realpath() implementation so that it will allocate a buffer when |
2906 | NULL is passed in. Before this can be used, though, some sort of | |
2907 | configure time test would need to be added. Otherwize the code | |
2908 | will likely core dump. */ | |
2909 | ||
70d35819 AC |
2910 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2911 | compile time buffer size and no alternative function. Query the | |
2912 | OS, using pathconf(), for the buffer limit. Care is needed | |
2913 | though, some systems do not limit PATH_MAX (return -1 for | |
2914 | pathconf()) making it impossible to pass a correctly sized buffer | |
2915 | to realpath() (it could always overflow). On those systems, we | |
2916 | skip this. */ | |
8c0da261 | 2917 | #if defined (HAVE_REALPATH) && defined (_PC_PATH_MAX) && defined(HAVE_ALLOCA) |
70d35819 AC |
2918 | { |
2919 | /* Find out the max path size. */ | |
2920 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
5d502164 | 2921 | |
70d35819 AC |
2922 | if (path_max > 0) |
2923 | { | |
2924 | /* PATH_MAX is bounded. */ | |
2925 | char *buf = alloca (path_max); | |
2926 | char *rp = realpath (filename, buf); | |
5d502164 | 2927 | |
70d35819 AC |
2928 | return xstrdup (rp ? rp : filename); |
2929 | } | |
2930 | } | |
2931 | #endif | |
2932 | ||
9c5e4386 JB |
2933 | /* The MS Windows method. If we don't have realpath, we assume we |
2934 | don't have symlinks and just canonicalize to a Windows absolute | |
2935 | path. GetFullPath converts ../ and ./ in relative paths to | |
2936 | absolute paths, filling in current drive if one is not given | |
2937 | or using the current directory of a specified drive (eg, "E:foo"). | |
2938 | It also converts all forward slashes to back slashes. */ | |
2939 | /* The file system is case-insensitive but case-preserving. | |
2940 | So we do not lowercase the path. Otherwise, we might not | |
2941 | be able to display the original casing in a given path. */ | |
2942 | #if defined (_WIN32) | |
2943 | { | |
2944 | char buf[MAX_PATH]; | |
2945 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2946 | ||
2947 | if (len > 0 && len < MAX_PATH) | |
2948 | return xstrdup (buf); | |
2949 | } | |
2950 | #endif | |
2951 | ||
70d35819 AC |
2952 | /* This system is a lost cause, just dup the buffer. */ |
2953 | return xstrdup (filename); | |
58d370e0 | 2954 | } |
303c8ebd | 2955 | |
4856b6bc JK |
2956 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2957 | by gdb_realpath. */ | |
2958 | ||
2959 | char * | |
2960 | gdb_realpath_keepfile (const char *filename) | |
2961 | { | |
2962 | const char *base_name = lbasename (filename); | |
2963 | char *dir_name; | |
2964 | char *real_path; | |
2965 | char *result; | |
2966 | ||
2967 | /* Extract the basename of filename, and return immediately | |
2968 | a copy of filename if it does not contain any directory prefix. */ | |
2969 | if (base_name == filename) | |
2970 | return xstrdup (filename); | |
2971 | ||
2972 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2973 | /* Allocate enough space to store the dir_name + plus one extra | |
2974 | character sometimes needed under Windows (see below), and | |
2975 | then the closing \000 character. */ | |
2976 | strncpy (dir_name, filename, base_name - filename); | |
2977 | dir_name[base_name - filename] = '\000'; | |
2978 | ||
2979 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2980 | /* We need to be careful when filename is of the form 'd:foo', which | |
2981 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2982 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2983 | { | |
2984 | dir_name[2] = '.'; | |
2985 | dir_name[3] = '\000'; | |
2986 | } | |
2987 | #endif | |
2988 | ||
2989 | /* Canonicalize the directory prefix, and build the resulting | |
2990 | filename. If the dirname realpath already contains an ending | |
2991 | directory separator, avoid doubling it. */ | |
2992 | real_path = gdb_realpath (dir_name); | |
2993 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2994 | result = concat (real_path, base_name, (char *) NULL); | |
2995 | else | |
2996 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2997 | ||
2998 | xfree (real_path); | |
2999 | return result; | |
3000 | } | |
3001 | ||
04affae3 JK |
3002 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
3003 | PATH cannot be NULL or the empty string. | |
3004 | This does not resolve symlinks however, use gdb_realpath for that. | |
3005 | Space for the result is allocated with malloc. | |
3006 | If the path is already absolute, it is strdup'd. | |
3007 | If there is a problem computing the absolute path, the path is returned | |
3008 | unchanged (still strdup'd). */ | |
3009 | ||
3010 | char * | |
3011 | gdb_abspath (const char *path) | |
3012 | { | |
3013 | gdb_assert (path != NULL && path[0] != '\0'); | |
3014 | ||
3015 | if (path[0] == '~') | |
3016 | return tilde_expand (path); | |
3017 | ||
3018 | if (IS_ABSOLUTE_PATH (path)) | |
3019 | return xstrdup (path); | |
3020 | ||
3021 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
3022 | return concat (current_directory, | |
3023 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
3024 | ? "" : SLASH_STRING, | |
3025 | path, (char *) NULL); | |
3026 | } | |
3027 | ||
5b03f266 AC |
3028 | ULONGEST |
3029 | align_up (ULONGEST v, int n) | |
3030 | { | |
3031 | /* Check that N is really a power of two. */ | |
3032 | gdb_assert (n && (n & (n-1)) == 0); | |
3033 | return (v + n - 1) & -n; | |
3034 | } | |
3035 | ||
3036 | ULONGEST | |
3037 | align_down (ULONGEST v, int n) | |
3038 | { | |
3039 | /* Check that N is really a power of two. */ | |
3040 | gdb_assert (n && (n & (n-1)) == 0); | |
3041 | return (v & -n); | |
3042 | } | |
ae5a43e0 | 3043 | |
5bd1ef56 TT |
3044 | /* See utils.h. */ |
3045 | ||
3046 | LONGEST | |
3047 | gdb_sign_extend (LONGEST value, int bit) | |
3048 | { | |
3049 | gdb_assert (bit >= 1 && bit <= 8 * sizeof (LONGEST)); | |
3050 | ||
3051 | if (((value >> (bit - 1)) & 1) != 0) | |
3052 | { | |
3053 | LONGEST signbit = ((LONGEST) 1) << (bit - 1); | |
3054 | ||
3055 | value = (value ^ signbit) - signbit; | |
3056 | } | |
3057 | ||
3058 | return value; | |
3059 | } | |
3060 | ||
ae5a43e0 DJ |
3061 | /* Allocation function for the libiberty hash table which uses an |
3062 | obstack. The obstack is passed as DATA. */ | |
3063 | ||
3064 | void * | |
3065 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
3066 | { | |
241fd515 | 3067 | size_t total = size * count; |
ae5a43e0 | 3068 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 3069 | |
ae5a43e0 DJ |
3070 | memset (ptr, 0, total); |
3071 | return ptr; | |
3072 | } | |
3073 | ||
3074 | /* Trivial deallocation function for the libiberty splay tree and hash | |
3075 | table - don't deallocate anything. Rely on later deletion of the | |
3076 | obstack. DATA will be the obstack, although it is not needed | |
3077 | here. */ | |
3078 | ||
3079 | void | |
3080 | dummy_obstack_deallocate (void *object, void *data) | |
3081 | { | |
3082 | return; | |
3083 | } | |
253c8abb DJ |
3084 | |
3085 | /* The bit offset of the highest byte in a ULONGEST, for overflow | |
3086 | checking. */ | |
3087 | ||
3088 | #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT) | |
3089 | ||
3090 | /* True (non-zero) iff DIGIT is a valid digit in radix BASE, | |
3091 | where 2 <= BASE <= 36. */ | |
3092 | ||
3093 | static int | |
3094 | is_digit_in_base (unsigned char digit, int base) | |
3095 | { | |
3096 | if (!isalnum (digit)) | |
3097 | return 0; | |
3098 | if (base <= 10) | |
3099 | return (isdigit (digit) && digit < base + '0'); | |
3100 | else | |
3101 | return (isdigit (digit) || tolower (digit) < base - 10 + 'a'); | |
3102 | } | |
3103 | ||
3104 | static int | |
3105 | digit_to_int (unsigned char c) | |
3106 | { | |
3107 | if (isdigit (c)) | |
3108 | return c - '0'; | |
3109 | else | |
3110 | return tolower (c) - 'a' + 10; | |
3111 | } | |
3112 | ||
3113 | /* As for strtoul, but for ULONGEST results. */ | |
3114 | ||
3115 | ULONGEST | |
3116 | strtoulst (const char *num, const char **trailer, int base) | |
3117 | { | |
3118 | unsigned int high_part; | |
3119 | ULONGEST result; | |
3120 | int minus = 0; | |
3121 | int i = 0; | |
3122 | ||
3123 | /* Skip leading whitespace. */ | |
3124 | while (isspace (num[i])) | |
3125 | i++; | |
3126 | ||
3127 | /* Handle prefixes. */ | |
3128 | if (num[i] == '+') | |
3129 | i++; | |
3130 | else if (num[i] == '-') | |
3131 | { | |
3132 | minus = 1; | |
3133 | i++; | |
3134 | } | |
3135 | ||
3136 | if (base == 0 || base == 16) | |
3137 | { | |
3138 | if (num[i] == '0' && (num[i + 1] == 'x' || num[i + 1] == 'X')) | |
3139 | { | |
3140 | i += 2; | |
3141 | if (base == 0) | |
3142 | base = 16; | |
3143 | } | |
3144 | } | |
3145 | ||
3146 | if (base == 0 && num[i] == '0') | |
3147 | base = 8; | |
3148 | ||
3149 | if (base == 0) | |
3150 | base = 10; | |
3151 | ||
3152 | if (base < 2 || base > 36) | |
3153 | { | |
3154 | errno = EINVAL; | |
3155 | return 0; | |
3156 | } | |
3157 | ||
3158 | result = high_part = 0; | |
3159 | for (; is_digit_in_base (num[i], base); i += 1) | |
3160 | { | |
3161 | result = result * base + digit_to_int (num[i]); | |
3162 | high_part = high_part * base + (unsigned int) (result >> HIGH_BYTE_POSN); | |
3163 | result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1; | |
3164 | if (high_part > 0xff) | |
3165 | { | |
3166 | errno = ERANGE; | |
3167 | result = ~ (ULONGEST) 0; | |
3168 | high_part = 0; | |
3169 | minus = 0; | |
3170 | break; | |
3171 | } | |
3172 | } | |
3173 | ||
3174 | if (trailer != NULL) | |
3175 | *trailer = &num[i]; | |
3176 | ||
3177 | result = result + ((ULONGEST) high_part << HIGH_BYTE_POSN); | |
3178 | if (minus) | |
3179 | return -result; | |
3180 | else | |
3181 | return result; | |
3182 | } | |
e1024ff1 DJ |
3183 | |
3184 | /* Simple, portable version of dirname that does not modify its | |
3185 | argument. */ | |
3186 | ||
3187 | char * | |
3188 | ldirname (const char *filename) | |
3189 | { | |
3190 | const char *base = lbasename (filename); | |
3191 | char *dirname; | |
3192 | ||
3193 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
3194 | --base; | |
3195 | ||
3196 | if (base == filename) | |
3197 | return NULL; | |
3198 | ||
3199 | dirname = xmalloc (base - filename + 2); | |
3200 | memcpy (dirname, filename, base - filename); | |
3201 | ||
3202 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
3203 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
3204 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
3205 | && !IS_DIR_SEPARATOR (filename[0])) | |
3206 | dirname[base++ - filename] = '.'; | |
3207 | ||
3208 | dirname[base - filename] = '\0'; | |
3209 | return dirname; | |
3210 | } | |
d1a41061 PP |
3211 | |
3212 | /* Call libiberty's buildargv, and return the result. | |
3213 | If buildargv fails due to out-of-memory, call nomem. | |
3214 | Therefore, the returned value is guaranteed to be non-NULL, | |
3215 | unless the parameter itself is NULL. */ | |
3216 | ||
3217 | char ** | |
3218 | gdb_buildargv (const char *s) | |
3219 | { | |
3220 | char **argv = buildargv (s); | |
e0627e85 | 3221 | |
d1a41061 | 3222 | if (s != NULL && argv == NULL) |
d26e3629 | 3223 | malloc_failure (0); |
d1a41061 PP |
3224 | return argv; |
3225 | } | |
3c16cced | 3226 | |
dc146f7c VP |
3227 | int |
3228 | compare_positive_ints (const void *ap, const void *bp) | |
3229 | { | |
3230 | /* Because we know we're comparing two ints which are positive, | |
3231 | there's no danger of overflow here. */ | |
3232 | return * (int *) ap - * (int *) bp; | |
3233 | } | |
3234 | ||
f8eba3c6 TT |
3235 | /* String compare function for qsort. */ |
3236 | ||
3237 | int | |
3238 | compare_strings (const void *arg1, const void *arg2) | |
3239 | { | |
3240 | const char **s1 = (const char **) arg1; | |
3241 | const char **s2 = (const char **) arg2; | |
3242 | ||
3243 | return strcmp (*s1, *s2); | |
3244 | } | |
3245 | ||
d18b8b7a | 3246 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
3247 | #define AMBIGUOUS_MESS2 \ |
3248 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
3249 | |
3250 | const char * | |
3251 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
3252 | { | |
3253 | char *ret, *retp; | |
3254 | int ret_len; | |
3255 | char **p; | |
3256 | ||
3257 | /* Check if errmsg just need simple return. */ | |
3258 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
3259 | return bfd_errmsg (error_tag); | |
3260 | ||
3261 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
3262 | + strlen (AMBIGUOUS_MESS2); | |
3263 | for (p = matching; *p; p++) | |
3264 | ret_len += strlen (*p) + 1; | |
3265 | ret = xmalloc (ret_len + 1); | |
3266 | retp = ret; | |
3267 | make_cleanup (xfree, ret); | |
3268 | ||
3269 | strcpy (retp, bfd_errmsg (error_tag)); | |
3270 | retp += strlen (retp); | |
3271 | ||
3272 | strcpy (retp, AMBIGUOUS_MESS1); | |
3273 | retp += strlen (retp); | |
3274 | ||
3275 | for (p = matching; *p; p++) | |
3276 | { | |
3277 | sprintf (retp, " %s", *p); | |
3278 | retp += strlen (retp); | |
3279 | } | |
3280 | xfree (matching); | |
3281 | ||
3282 | strcpy (retp, AMBIGUOUS_MESS2); | |
3283 | ||
3284 | return ret; | |
3285 | } | |
3286 | ||
74164c56 JK |
3287 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
3288 | ||
3289 | int | |
c0939df1 | 3290 | parse_pid_to_attach (const char *args) |
74164c56 JK |
3291 | { |
3292 | unsigned long pid; | |
3293 | char *dummy; | |
3294 | ||
3295 | if (!args) | |
3296 | error_no_arg (_("process-id to attach")); | |
3297 | ||
c0939df1 | 3298 | dummy = (char *) args; |
74164c56 JK |
3299 | pid = strtoul (args, &dummy, 0); |
3300 | /* Some targets don't set errno on errors, grrr! */ | |
3301 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
3302 | error (_("Illegal process-id: %s."), args); | |
3303 | ||
3304 | return pid; | |
3305 | } | |
3306 | ||
353d1d73 JK |
3307 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
3308 | ||
3309 | static void | |
3310 | do_bpstat_clear_actions_cleanup (void *unused) | |
3311 | { | |
3312 | bpstat_clear_actions (); | |
3313 | } | |
3314 | ||
3315 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
3316 | discard_cleanups if no exception is caught. */ | |
3317 | ||
3318 | struct cleanup * | |
3319 | make_bpstat_clear_actions_cleanup (void) | |
3320 | { | |
3321 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
3322 | } | |
3323 | ||
df15bd07 JK |
3324 | /* Check for GCC >= 4.x according to the symtab->producer string. Return minor |
3325 | version (x) of 4.x in such case. If it is not GCC or it is GCC older than | |
3326 | 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */ | |
3327 | ||
3328 | int | |
3329 | producer_is_gcc_ge_4 (const char *producer) | |
3330 | { | |
3331 | const char *cs; | |
3332 | int major, minor; | |
3333 | ||
3334 | if (producer == NULL) | |
3335 | { | |
3336 | /* For unknown compilers expect their behavior is not compliant. For GCC | |
3337 | this case can also happen for -gdwarf-4 type units supported since | |
3338 | gcc-4.5. */ | |
3339 | ||
3340 | return -1; | |
3341 | } | |
3342 | ||
3343 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
3344 | ||
3345 | if (strncmp (producer, "GNU ", strlen ("GNU ")) != 0) | |
3346 | { | |
3347 | /* For non-GCC compilers expect their behavior is not compliant. */ | |
3348 | ||
3349 | return -1; | |
3350 | } | |
3351 | cs = &producer[strlen ("GNU ")]; | |
3352 | while (*cs && !isdigit (*cs)) | |
3353 | cs++; | |
3354 | if (sscanf (cs, "%d.%d", &major, &minor) != 2) | |
3355 | { | |
3356 | /* Not recognized as GCC. */ | |
3357 | ||
3358 | return -1; | |
3359 | } | |
3360 | ||
3361 | if (major < 4) | |
3362 | return -1; | |
3363 | if (major > 4) | |
3364 | return INT_MAX; | |
3365 | return minor; | |
3366 | } | |
3367 | ||
e4ab2fad JK |
3368 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
3369 | ||
3370 | static void | |
3371 | do_free_char_ptr_vec (void *arg) | |
3372 | { | |
3373 | VEC (char_ptr) *char_ptr_vec = arg; | |
3374 | ||
3375 | free_char_ptr_vec (char_ptr_vec); | |
3376 | } | |
3377 | ||
3378 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
3379 | final VEC_free for CHAR_PTR_VEC itself. | |
3380 | ||
3381 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
3382 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
3383 | this function does not (cannot) clear the pointer. */ | |
3384 | ||
3385 | struct cleanup * | |
3386 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
3387 | { | |
3388 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
3389 | } | |
3390 | ||
6dea1fbd JK |
3391 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3392 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3393 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3394 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3395 | |
3396 | void | |
3397 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3398 | { | |
3399 | char *string = *stringp, *s; | |
3400 | const size_t from_len = strlen (from); | |
3401 | const size_t to_len = strlen (to); | |
3402 | ||
3403 | for (s = string;;) | |
3404 | { | |
3405 | s = strstr (s, from); | |
3406 | if (s == NULL) | |
3407 | break; | |
3408 | ||
1564a261 JK |
3409 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3410 | || s[-1] == DIRNAME_SEPARATOR) | |
3411 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3412 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3413 | { |
3414 | char *string_new; | |
3415 | ||
3416 | string_new = xrealloc (string, (strlen (string) + to_len + 1)); | |
3417 | ||
3418 | /* Relocate the current S pointer. */ | |
3419 | s = s - string + string_new; | |
3420 | string = string_new; | |
3421 | ||
3422 | /* Replace from by to. */ | |
3423 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3424 | memcpy (s, to, to_len); | |
3425 | ||
3426 | s += to_len; | |
3427 | } | |
3428 | else | |
3429 | s++; | |
3430 | } | |
3431 | ||
3432 | *stringp = string; | |
3433 | } | |
3434 | ||
0b6cb71e DE |
3435 | #ifdef HAVE_WAITPID |
3436 | ||
3437 | #ifdef SIGALRM | |
3438 | ||
3439 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3440 | ||
3441 | static void | |
3442 | sigalrm_handler (int signo) | |
3443 | { | |
3444 | /* Nothing to do. */ | |
3445 | } | |
3446 | ||
3447 | #endif | |
3448 | ||
3449 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3450 | TIMEOUT is the time to stop waiting in seconds. | |
3451 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3452 | Returns PID if it was successfully waited for, otherwise -1. | |
3453 | ||
3454 | Timeouts are currently implemented with alarm and SIGALRM. | |
3455 | If the host does not support them, this waits "forever". | |
3456 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3457 | ||
3458 | pid_t | |
3459 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3460 | { | |
3461 | pid_t waitpid_result; | |
3462 | ||
3463 | gdb_assert (pid > 0); | |
3464 | gdb_assert (timeout >= 0); | |
3465 | ||
3466 | if (timeout > 0) | |
3467 | { | |
3468 | #ifdef SIGALRM | |
3469 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3470 | struct sigaction sa, old_sa; | |
3471 | ||
3472 | sa.sa_handler = sigalrm_handler; | |
3473 | sigemptyset (&sa.sa_mask); | |
3474 | sa.sa_flags = 0; | |
3475 | sigaction (SIGALRM, &sa, &old_sa); | |
3476 | #else | |
3477 | void (*ofunc) (); | |
3478 | ||
3479 | ofunc = (void (*)()) signal (SIGALRM, sigalrm_handler); | |
3480 | #endif | |
3481 | ||
3482 | alarm (timeout); | |
3483 | #endif | |
3484 | ||
3485 | waitpid_result = waitpid (pid, status, 0); | |
3486 | ||
3487 | #ifdef SIGALRM | |
3488 | alarm (0); | |
3489 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3490 | sigaction (SIGALRM, &old_sa, NULL); | |
3491 | #else | |
3492 | signal (SIGALRM, ofunc); | |
3493 | #endif | |
3494 | #endif | |
3495 | } | |
3496 | else | |
3497 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3498 | ||
3499 | if (waitpid_result == pid) | |
3500 | return pid; | |
3501 | else | |
3502 | return -1; | |
3503 | } | |
3504 | ||
3505 | #endif /* HAVE_WAITPID */ | |
3506 | ||
202cbf1c JK |
3507 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3508 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3509 | ||
3510 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3511 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3512 | ||
3513 | int | |
3514 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3515 | { | |
3516 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3517 | ||
3518 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3519 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3520 | ||
3521 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3522 | { | |
3523 | char *pattern_slash, *string_slash; | |
3524 | ||
3525 | /* Replace '\' by '/' in both strings. */ | |
3526 | ||
3527 | pattern_slash = alloca (strlen (pattern) + 1); | |
3528 | strcpy (pattern_slash, pattern); | |
3529 | pattern = pattern_slash; | |
3530 | for (; *pattern_slash != 0; pattern_slash++) | |
3531 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3532 | *pattern_slash = '/'; | |
3533 | ||
3534 | string_slash = alloca (strlen (string) + 1); | |
3535 | strcpy (string_slash, string); | |
3536 | string = string_slash; | |
3537 | for (; *string_slash != 0; string_slash++) | |
3538 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3539 | *string_slash = '/'; | |
3540 | } | |
3541 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3542 | ||
3543 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3544 | flags |= FNM_CASEFOLD; | |
3545 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3546 | ||
3547 | return fnmatch (pattern, string, flags); | |
3548 | } | |
3549 | ||
2c0b251b PA |
3550 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3551 | extern initialize_file_ftype _initialize_utils; | |
3552 | ||
3c16cced PA |
3553 | void |
3554 | _initialize_utils (void) | |
3555 | { | |
3556 | add_internal_problem_command (&internal_error_problem); | |
3557 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3558 | add_internal_problem_command (&demangler_warning_problem); |
3c16cced | 3559 | } |