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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 | { | |
523 | target_terminal_ours (); | |
581e13c1 | 524 | wrap_here (""); /* Force out any buffered output. */ |
f5a96129 AC |
525 | gdb_flush (gdb_stdout); |
526 | if (warning_pre_print) | |
306d9ac5 | 527 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
528 | vfprintf_unfiltered (gdb_stderr, string, args); |
529 | fprintf_unfiltered (gdb_stderr, "\n"); | |
f5a96129 | 530 | } |
c906108c SS |
531 | } |
532 | ||
c906108c SS |
533 | /* Print an error message and return to command level. |
534 | The first argument STRING is the error message, used as a fprintf string, | |
535 | and the remaining args are passed as arguments to it. */ | |
536 | ||
c25c4a8b | 537 | void |
4ce44c66 JM |
538 | verror (const char *string, va_list args) |
539 | { | |
6b1b7650 | 540 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
541 | } |
542 | ||
c25c4a8b | 543 | void |
d75e3c94 | 544 | error_stream (struct ui_file *stream) |
2acceee2 | 545 | { |
759ef836 | 546 | char *message = ui_file_xstrdup (stream, NULL); |
e0627e85 | 547 | |
6b1b7650 | 548 | make_cleanup (xfree, message); |
8a3fe4f8 | 549 | error (("%s"), message); |
2acceee2 | 550 | } |
c906108c | 551 | |
7991dee7 JK |
552 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
553 | ||
eae7090b | 554 | void |
7991dee7 JK |
555 | dump_core (void) |
556 | { | |
557 | #ifdef HAVE_SETRLIMIT | |
558 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
559 | ||
560 | setrlimit (RLIMIT_CORE, &rlim); | |
561 | #endif /* HAVE_SETRLIMIT */ | |
562 | ||
563 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
564 | } | |
565 | ||
3e43a32a | 566 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
567 | function. Returns zero if GDB cannot or should not dump core. |
568 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
569 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 570 | |
eae7090b GB |
571 | int |
572 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
573 | { |
574 | #ifdef HAVE_GETRLIMIT | |
575 | struct rlimit rlim; | |
576 | ||
577 | /* Be quiet and assume we can dump if an error is returned. */ | |
578 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
579 | return 1; | |
580 | ||
eae7090b | 581 | switch (limit_kind) |
7991dee7 | 582 | { |
eae7090b GB |
583 | case LIMIT_CUR: |
584 | if (rlim.rlim_cur == 0) | |
585 | return 0; | |
586 | ||
587 | case LIMIT_MAX: | |
588 | if (rlim.rlim_max == 0) | |
589 | return 0; | |
7991dee7 JK |
590 | } |
591 | #endif /* HAVE_GETRLIMIT */ | |
592 | ||
593 | return 1; | |
594 | } | |
595 | ||
eae7090b GB |
596 | /* Print a warning that we cannot dump core. */ |
597 | ||
598 | void | |
599 | warn_cant_dump_core (const char *reason) | |
600 | { | |
601 | fprintf_unfiltered (gdb_stderr, | |
602 | _("%s\nUnable to dump core, use `ulimit -c" | |
603 | " unlimited' before executing GDB next time.\n"), | |
604 | reason); | |
605 | } | |
606 | ||
607 | /* Check whether GDB will be able to dump core using the dump_core | |
608 | function, and print a warning if we cannot. */ | |
609 | ||
610 | static int | |
611 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
612 | const char *reason) | |
613 | { | |
614 | int core_dump_allowed = can_dump_core (limit_kind); | |
615 | ||
616 | if (!core_dump_allowed) | |
617 | warn_cant_dump_core (reason); | |
618 | ||
619 | return core_dump_allowed; | |
620 | } | |
621 | ||
3c16cced PA |
622 | /* Allow the user to configure the debugger behavior with respect to |
623 | what to do when an internal problem is detected. */ | |
624 | ||
625 | const char internal_problem_ask[] = "ask"; | |
626 | const char internal_problem_yes[] = "yes"; | |
627 | const char internal_problem_no[] = "no"; | |
40478521 | 628 | static const char *const internal_problem_modes[] = |
3c16cced PA |
629 | { |
630 | internal_problem_ask, | |
631 | internal_problem_yes, | |
632 | internal_problem_no, | |
633 | NULL | |
634 | }; | |
3c16cced | 635 | |
581e13c1 | 636 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
637 | if they want to continue, dump core, or just exit. Return |
638 | something to indicate a quit. */ | |
c906108c | 639 | |
dec43320 | 640 | struct internal_problem |
c906108c | 641 | { |
dec43320 | 642 | const char *name; |
57fcfb1b | 643 | int user_settable_should_quit; |
3c16cced | 644 | const char *should_quit; |
57fcfb1b | 645 | int user_settable_should_dump_core; |
3c16cced | 646 | const char *should_dump_core; |
dec43320 AC |
647 | }; |
648 | ||
649 | /* Report a problem, internal to GDB, to the user. Once the problem | |
650 | has been reported, and assuming GDB didn't quit, the caller can | |
651 | either allow execution to resume or throw an error. */ | |
652 | ||
a0b31db1 | 653 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 654 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 655 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 656 | { |
dec43320 | 657 | static int dejavu; |
375fc983 | 658 | int quit_p; |
7be570e7 | 659 | int dump_core_p; |
714b1282 | 660 | char *reason; |
48be7c1b | 661 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
c906108c | 662 | |
dec43320 | 663 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
664 | { |
665 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 666 | |
714b1282 AC |
667 | switch (dejavu) |
668 | { | |
669 | case 0: | |
670 | dejavu = 1; | |
671 | break; | |
672 | case 1: | |
673 | dejavu = 2; | |
674 | fputs_unfiltered (msg, gdb_stderr); | |
7991dee7 | 675 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
676 | default: |
677 | dejavu = 3; | |
bf1d7d9c JB |
678 | /* Newer GLIBC versions put the warn_unused_result attribute |
679 | on write, but this is one of those rare cases where | |
680 | ignoring the return value is correct. Casting to (void) | |
681 | does not fix this problem. This is the solution suggested | |
682 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
683 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 684 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
685 | exit (1); |
686 | } | |
687 | } | |
c906108c | 688 | |
dec43320 | 689 | /* Try to get the message out and at the start of a new line. */ |
4261bedc | 690 | target_terminal_ours (); |
dec43320 AC |
691 | begin_line (); |
692 | ||
714b1282 AC |
693 | /* Create a string containing the full error/warning message. Need |
694 | to call query with this full string, as otherwize the reason | |
695 | (error/warning) and question become separated. Format using a | |
696 | style similar to a compiler error message. Include extra detail | |
697 | so that the user knows that they are living on the edge. */ | |
698 | { | |
699 | char *msg; | |
5d502164 | 700 | |
e623b504 | 701 | msg = xstrvprintf (fmt, ap); |
3e43a32a MS |
702 | reason = xstrprintf ("%s:%d: %s: %s\n" |
703 | "A problem internal to GDB has been detected,\n" | |
704 | "further debugging may prove unreliable.", | |
705 | file, line, problem->name, msg); | |
714b1282 AC |
706 | xfree (msg); |
707 | make_cleanup (xfree, reason); | |
708 | } | |
7be570e7 | 709 | |
196a707b GB |
710 | /* Emit the message unless query will emit it below. */ |
711 | if (problem->should_quit != internal_problem_ask || !confirm) | |
712 | fprintf_unfiltered (gdb_stderr, "%s\n", reason); | |
713 | ||
3c16cced | 714 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 715 | { |
dec43320 | 716 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
717 | this lessens the likelihood of GDB going into an infinite |
718 | loop. */ | |
e360902b | 719 | if (!confirm) |
196a707b | 720 | quit_p = 1; |
26bb68be PP |
721 | else |
722 | quit_p = query (_("%s\nQuit this debugging session? "), reason); | |
dec43320 | 723 | } |
3c16cced PA |
724 | else if (problem->should_quit == internal_problem_yes) |
725 | quit_p = 1; | |
726 | else if (problem->should_quit == internal_problem_no) | |
727 | quit_p = 0; | |
728 | else | |
729 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 730 | |
add6c04d GB |
731 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
732 | if (REPORT_BUGS_TO[0]) | |
733 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
734 | REPORT_BUGS_TO); | |
735 | fputs_unfiltered ("\n\n", gdb_stderr); | |
736 | ||
3c16cced | 737 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 738 | { |
eae7090b | 739 | if (!can_dump_core_warn (LIMIT_MAX, reason)) |
7991dee7 JK |
740 | dump_core_p = 0; |
741 | else | |
742 | { | |
743 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
744 | `dropping' so that it is easier to see that something went | |
745 | wrong in GDB. */ | |
746 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); | |
747 | } | |
dec43320 | 748 | } |
3c16cced | 749 | else if (problem->should_dump_core == internal_problem_yes) |
eae7090b | 750 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason); |
3c16cced PA |
751 | else if (problem->should_dump_core == internal_problem_no) |
752 | dump_core_p = 0; | |
753 | else | |
754 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 755 | |
375fc983 | 756 | if (quit_p) |
7be570e7 JM |
757 | { |
758 | if (dump_core_p) | |
7991dee7 | 759 | dump_core (); |
375fc983 AC |
760 | else |
761 | exit (1); | |
7be570e7 JM |
762 | } |
763 | else | |
764 | { | |
765 | if (dump_core_p) | |
375fc983 | 766 | { |
9b265ec2 | 767 | #ifdef HAVE_WORKING_FORK |
375fc983 | 768 | if (fork () == 0) |
7991dee7 | 769 | dump_core (); |
9b265ec2 | 770 | #endif |
375fc983 | 771 | } |
7be570e7 | 772 | } |
96baa820 JM |
773 | |
774 | dejavu = 0; | |
48be7c1b | 775 | do_cleanups (cleanup); |
dec43320 AC |
776 | } |
777 | ||
778 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 779 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
780 | }; |
781 | ||
c25c4a8b | 782 | void |
8731e58e | 783 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
784 | { |
785 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 786 | throw_quit (_("Command aborted.")); |
c906108c SS |
787 | } |
788 | ||
dec43320 | 789 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 790 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
791 | }; |
792 | ||
793 | void | |
8731e58e | 794 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
795 | { |
796 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
797 | } | |
798 | ||
799 | void | |
800 | internal_warning (const char *file, int line, const char *string, ...) | |
801 | { | |
802 | va_list ap; | |
e0627e85 | 803 | |
dec43320 AC |
804 | va_start (ap, string); |
805 | internal_vwarning (file, line, string, ap); | |
806 | va_end (ap); | |
807 | } | |
808 | ||
57fcfb1b GB |
809 | static struct internal_problem demangler_warning_problem = { |
810 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
811 | }; | |
812 | ||
813 | void | |
814 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
815 | { | |
816 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
817 | } | |
818 | ||
819 | void | |
820 | demangler_warning (const char *file, int line, const char *string, ...) | |
821 | { | |
822 | va_list ap; | |
823 | ||
824 | va_start (ap, string); | |
825 | demangler_vwarning (file, line, string, ap); | |
826 | va_end (ap); | |
827 | } | |
828 | ||
3c16cced PA |
829 | /* Dummy functions to keep add_prefix_cmd happy. */ |
830 | ||
831 | static void | |
832 | set_internal_problem_cmd (char *args, int from_tty) | |
833 | { | |
834 | } | |
835 | ||
836 | static void | |
837 | show_internal_problem_cmd (char *args, int from_tty) | |
838 | { | |
839 | } | |
840 | ||
841 | /* When GDB reports an internal problem (error or warning) it gives | |
842 | the user the opportunity to quit GDB and/or create a core file of | |
843 | the current debug session. This function registers a few commands | |
844 | that make it possible to specify that GDB should always or never | |
845 | quit or create a core file, without asking. The commands look | |
846 | like: | |
847 | ||
848 | maint set PROBLEM-NAME quit ask|yes|no | |
849 | maint show PROBLEM-NAME quit | |
850 | maint set PROBLEM-NAME corefile ask|yes|no | |
851 | maint show PROBLEM-NAME corefile | |
852 | ||
853 | Where PROBLEM-NAME is currently "internal-error" or | |
854 | "internal-warning". */ | |
855 | ||
856 | static void | |
857 | add_internal_problem_command (struct internal_problem *problem) | |
858 | { | |
859 | struct cmd_list_element **set_cmd_list; | |
860 | struct cmd_list_element **show_cmd_list; | |
861 | char *set_doc; | |
862 | char *show_doc; | |
863 | ||
864 | set_cmd_list = xmalloc (sizeof (*set_cmd_list)); | |
865 | show_cmd_list = xmalloc (sizeof (*set_cmd_list)); | |
866 | *set_cmd_list = NULL; | |
867 | *show_cmd_list = NULL; | |
868 | ||
869 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
870 | problem->name); | |
871 | ||
872 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
873 | problem->name); | |
874 | ||
875 | add_prefix_cmd ((char*) problem->name, | |
876 | class_maintenance, set_internal_problem_cmd, set_doc, | |
877 | set_cmd_list, | |
c4f7c687 MK |
878 | concat ("maintenance set ", problem->name, " ", |
879 | (char *) NULL), | |
3c16cced PA |
880 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
881 | ||
882 | add_prefix_cmd ((char*) problem->name, | |
883 | class_maintenance, show_internal_problem_cmd, show_doc, | |
884 | show_cmd_list, | |
c4f7c687 MK |
885 | concat ("maintenance show ", problem->name, " ", |
886 | (char *) NULL), | |
3c16cced PA |
887 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
888 | ||
57fcfb1b GB |
889 | if (problem->user_settable_should_quit) |
890 | { | |
891 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
892 | "when an %s is detected"), | |
893 | problem->name); | |
894 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
895 | "when an %s is detected"), | |
896 | problem->name); | |
897 | add_setshow_enum_cmd ("quit", class_maintenance, | |
898 | internal_problem_modes, | |
899 | &problem->should_quit, | |
900 | set_doc, | |
901 | show_doc, | |
902 | NULL, /* help_doc */ | |
903 | NULL, /* setfunc */ | |
904 | NULL, /* showfunc */ | |
905 | set_cmd_list, | |
906 | show_cmd_list); | |
907 | ||
908 | xfree (set_doc); | |
909 | xfree (show_doc); | |
910 | } | |
1eefb858 | 911 | |
57fcfb1b GB |
912 | if (problem->user_settable_should_dump_core) |
913 | { | |
914 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
915 | "file of GDB when %s is detected"), | |
916 | problem->name); | |
917 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
918 | "file of GDB when %s is detected"), | |
919 | problem->name); | |
920 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
921 | internal_problem_modes, | |
922 | &problem->should_dump_core, | |
923 | set_doc, | |
924 | show_doc, | |
925 | NULL, /* help_doc */ | |
926 | NULL, /* setfunc */ | |
927 | NULL, /* showfunc */ | |
928 | set_cmd_list, | |
929 | show_cmd_list); | |
930 | ||
931 | xfree (set_doc); | |
932 | xfree (show_doc); | |
933 | } | |
3c16cced PA |
934 | } |
935 | ||
0cf4063e JB |
936 | /* Return a newly allocated string, containing the PREFIX followed |
937 | by the system error message for errno (separated by a colon). | |
938 | ||
939 | The result must be deallocated after use. */ | |
940 | ||
941 | static char * | |
942 | perror_string (const char *prefix) | |
943 | { | |
944 | char *err; | |
945 | char *combined; | |
946 | ||
947 | err = safe_strerror (errno); | |
948 | combined = (char *) xmalloc (strlen (err) + strlen (prefix) + 3); | |
949 | strcpy (combined, prefix); | |
950 | strcat (combined, ": "); | |
951 | strcat (combined, err); | |
952 | ||
953 | return combined; | |
954 | } | |
955 | ||
c906108c | 956 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
957 | as the file name for which the error was encountered. Use ERRCODE |
958 | for the thrown exception. Then return to command level. */ | |
c906108c | 959 | |
c25c4a8b | 960 | void |
598d3636 | 961 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 962 | { |
c906108c SS |
963 | char *combined; |
964 | ||
0cf4063e JB |
965 | combined = perror_string (string); |
966 | make_cleanup (xfree, combined); | |
c906108c SS |
967 | |
968 | /* I understand setting these is a matter of taste. Still, some people | |
969 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 970 | unreasonable. */ |
c906108c SS |
971 | bfd_set_error (bfd_error_no_error); |
972 | errno = 0; | |
973 | ||
598d3636 JK |
974 | throw_error (errcode, _("%s."), combined); |
975 | } | |
976 | ||
977 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
978 | ||
979 | void | |
980 | perror_with_name (const char *string) | |
981 | { | |
982 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
983 | } |
984 | ||
7c647d61 JB |
985 | /* Same as perror_with_name except that it prints a warning instead |
986 | of throwing an error. */ | |
987 | ||
988 | void | |
989 | perror_warning_with_name (const char *string) | |
990 | { | |
991 | char *combined; | |
992 | ||
993 | combined = perror_string (string); | |
994 | warning (_("%s"), combined); | |
995 | xfree (combined); | |
996 | } | |
997 | ||
c906108c SS |
998 | /* Print the system error message for ERRCODE, and also mention STRING |
999 | as the file name for which the error was encountered. */ | |
1000 | ||
1001 | void | |
6972bc8b | 1002 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
1003 | { |
1004 | char *err; | |
1005 | char *combined; | |
1006 | ||
1007 | err = safe_strerror (errcode); | |
1008 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
1009 | strcpy (combined, string); | |
1010 | strcat (combined, ": "); | |
1011 | strcat (combined, err); | |
1012 | ||
1013 | /* We want anything which was printed on stdout to come out first, before | |
1014 | this message. */ | |
1015 | gdb_flush (gdb_stdout); | |
1016 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
1017 | } | |
1018 | ||
1019 | /* Control C eventually causes this to be called, at a convenient time. */ | |
1020 | ||
1021 | void | |
fba45db2 | 1022 | quit (void) |
c906108c | 1023 | { |
06c868a8 JK |
1024 | if (sync_quit_force_run) |
1025 | { | |
1026 | sync_quit_force_run = 0; | |
1027 | quit_force (NULL, stdin == instream); | |
1028 | } | |
1029 | ||
7be570e7 JM |
1030 | #ifdef __MSDOS__ |
1031 | /* No steenking SIGINT will ever be coming our way when the | |
1032 | program is resumed. Don't lie. */ | |
2c51604d | 1033 | throw_quit ("Quit"); |
7be570e7 | 1034 | #else |
c906108c | 1035 | if (job_control |
8731e58e AC |
1036 | /* If there is no terminal switching for this target, then we can't |
1037 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 1038 | || !target_supports_terminal_ours ()) |
2c51604d | 1039 | throw_quit ("Quit"); |
c906108c | 1040 | else |
2c51604d | 1041 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 1042 | #endif |
c906108c SS |
1043 | } |
1044 | ||
c906108c | 1045 | \f |
c906108c | 1046 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 1047 | memory requested in SIZE. */ |
c906108c | 1048 | |
c25c4a8b | 1049 | void |
d26e3629 | 1050 | malloc_failure (long size) |
c906108c SS |
1051 | { |
1052 | if (size > 0) | |
1053 | { | |
8e65ff28 | 1054 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1055 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 1056 | size); |
c906108c SS |
1057 | } |
1058 | else | |
1059 | { | |
e2e0b3e5 | 1060 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
1061 | } |
1062 | } | |
1063 | ||
c906108c SS |
1064 | /* My replacement for the read system call. |
1065 | Used like `read' but keeps going if `read' returns too soon. */ | |
1066 | ||
1067 | int | |
fba45db2 | 1068 | myread (int desc, char *addr, int len) |
c906108c | 1069 | { |
52f0bd74 | 1070 | int val; |
c906108c SS |
1071 | int orglen = len; |
1072 | ||
1073 | while (len > 0) | |
1074 | { | |
1075 | val = read (desc, addr, len); | |
1076 | if (val < 0) | |
1077 | return val; | |
1078 | if (val == 0) | |
1079 | return orglen - len; | |
1080 | len -= val; | |
1081 | addr += val; | |
1082 | } | |
1083 | return orglen; | |
1084 | } | |
d26e3629 | 1085 | |
c906108c | 1086 | void |
aa1ee363 | 1087 | print_spaces (int n, struct ui_file *file) |
c906108c | 1088 | { |
392a587b | 1089 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1090 | } |
1091 | ||
1092 | /* Print a host address. */ | |
1093 | ||
1094 | void | |
ac16bf07 | 1095 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
c906108c | 1096 | { |
ea8992ce | 1097 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 1098 | } |
c906108c | 1099 | \f |
c5aa993b | 1100 | |
dc92e161 TT |
1101 | /* A cleanup function that calls regfree. */ |
1102 | ||
1103 | static void | |
1104 | do_regfree_cleanup (void *r) | |
1105 | { | |
1106 | regfree (r); | |
1107 | } | |
1108 | ||
1109 | /* Create a new cleanup that frees the compiled regular expression R. */ | |
1110 | ||
1111 | struct cleanup * | |
1112 | make_regfree_cleanup (regex_t *r) | |
1113 | { | |
1114 | return make_cleanup (do_regfree_cleanup, r); | |
1115 | } | |
1116 | ||
1117 | /* Return an xmalloc'd error message resulting from a regular | |
1118 | expression compilation failure. */ | |
1119 | ||
1120 | char * | |
1121 | get_regcomp_error (int code, regex_t *rx) | |
1122 | { | |
1123 | size_t length = regerror (code, rx, NULL, 0); | |
1124 | char *result = xmalloc (length); | |
1125 | ||
1126 | regerror (code, rx, result, length); | |
1127 | return result; | |
1128 | } | |
1129 | ||
cc16e6c9 | 1130 | /* Compile a regexp and throw an exception on error. This returns a |
db26349c TT |
1131 | cleanup to free the resulting pattern on success. RX must not be |
1132 | NULL. */ | |
cc16e6c9 TT |
1133 | |
1134 | struct cleanup * | |
1135 | compile_rx_or_error (regex_t *pattern, const char *rx, const char *message) | |
1136 | { | |
1137 | int code; | |
1138 | ||
db26349c | 1139 | gdb_assert (rx != NULL); |
cc16e6c9 TT |
1140 | |
1141 | code = regcomp (pattern, rx, REG_NOSUB); | |
1142 | if (code != 0) | |
1143 | { | |
1144 | char *err = get_regcomp_error (code, pattern); | |
1145 | ||
1146 | make_cleanup (xfree, err); | |
1147 | error (("%s: %s"), message, err); | |
1148 | } | |
1149 | ||
1150 | return make_regfree_cleanup (pattern); | |
1151 | } | |
1152 | ||
dc92e161 TT |
1153 | \f |
1154 | ||
981c7f5a | 1155 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 1156 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
1157 | answer is yes, or default the answer to the specified default |
1158 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
1159 | default answer, or '\0' for no default. | |
cbdeadca JJ |
1160 | CTLSTR is the control string and should end in "? ". It should |
1161 | not say how to answer, because we do that. | |
1162 | ARGS are the arguments passed along with the CTLSTR argument to | |
1163 | printf. */ | |
1164 | ||
a0b31db1 | 1165 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
1166 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
1167 | { | |
1168 | int answer; | |
1169 | int ans2; | |
1170 | int retval; | |
1171 | int def_value; | |
1172 | char def_answer, not_def_answer; | |
981c7f5a | 1173 | char *y_string, *n_string, *question; |
260c0b2a DE |
1174 | /* Used to add duration we waited for user to respond to |
1175 | prompt_for_continue_wait_time. */ | |
1176 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
cbdeadca JJ |
1177 | |
1178 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
1179 | if (defchar == '\0') |
1180 | { | |
1181 | def_value = 1; | |
1182 | def_answer = 'Y'; | |
1183 | not_def_answer = 'N'; | |
1184 | y_string = "y"; | |
1185 | n_string = "n"; | |
1186 | } | |
1187 | else if (defchar == 'y') | |
cbdeadca JJ |
1188 | { |
1189 | def_value = 1; | |
1190 | def_answer = 'Y'; | |
1191 | not_def_answer = 'N'; | |
1192 | y_string = "[y]"; | |
1193 | n_string = "n"; | |
1194 | } | |
1195 | else | |
1196 | { | |
1197 | def_value = 0; | |
1198 | def_answer = 'N'; | |
1199 | not_def_answer = 'Y'; | |
1200 | y_string = "y"; | |
1201 | n_string = "[n]"; | |
1202 | } | |
1203 | ||
981c7f5a | 1204 | /* Automatically answer the default value if the user did not want |
a502cf95 | 1205 | prompts or the command was issued with the server prefix. */ |
e360902b | 1206 | if (!confirm || server_command) |
981c7f5a DJ |
1207 | return def_value; |
1208 | ||
1209 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 1210 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
1211 | way, important error messages don't get lost when talking to GDB |
1212 | over a pipe. */ | |
c63a1f86 | 1213 | if (! input_from_terminal_p ()) |
981c7f5a DJ |
1214 | { |
1215 | wrap_here (""); | |
1216 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1217 | ||
3e43a32a MS |
1218 | printf_filtered (_("(%s or %s) [answered %c; " |
1219 | "input not from terminal]\n"), | |
981c7f5a DJ |
1220 | y_string, n_string, def_answer); |
1221 | gdb_flush (gdb_stdout); | |
1222 | ||
1223 | return def_value; | |
1224 | } | |
1225 | ||
9a4105ab | 1226 | if (deprecated_query_hook) |
cbdeadca | 1227 | { |
9a4105ab | 1228 | return deprecated_query_hook (ctlstr, args); |
cbdeadca JJ |
1229 | } |
1230 | ||
981c7f5a DJ |
1231 | /* Format the question outside of the loop, to avoid reusing args. */ |
1232 | question = xstrvprintf (ctlstr, args); | |
1233 | ||
260c0b2a DE |
1234 | /* Used for calculating time spend waiting for user. */ |
1235 | gettimeofday (&prompt_started, NULL); | |
1236 | ||
cbdeadca JJ |
1237 | while (1) |
1238 | { | |
581e13c1 | 1239 | wrap_here (""); /* Flush any buffered output. */ |
cbdeadca JJ |
1240 | gdb_flush (gdb_stdout); |
1241 | ||
1242 | if (annotation_level > 1) | |
a3f17187 | 1243 | printf_filtered (("\n\032\032pre-query\n")); |
cbdeadca | 1244 | |
981c7f5a | 1245 | fputs_filtered (question, gdb_stdout); |
a3f17187 | 1246 | printf_filtered (_("(%s or %s) "), y_string, n_string); |
cbdeadca JJ |
1247 | |
1248 | if (annotation_level > 1) | |
a3f17187 | 1249 | printf_filtered (("\n\032\032query\n")); |
cbdeadca JJ |
1250 | |
1251 | wrap_here (""); | |
1252 | gdb_flush (gdb_stdout); | |
1253 | ||
1254 | answer = fgetc (stdin); | |
8626589c JB |
1255 | |
1256 | /* We expect fgetc to block until a character is read. But | |
1257 | this may not be the case if the terminal was opened with | |
1258 | the NONBLOCK flag. In that case, if there is nothing to | |
1259 | read on stdin, fgetc returns EOF, but also sets the error | |
1260 | condition flag on stdin and errno to EAGAIN. With a true | |
1261 | EOF, stdin's error condition flag is not set. | |
1262 | ||
1263 | A situation where this behavior was observed is a pseudo | |
1264 | terminal on AIX. */ | |
1265 | while (answer == EOF && ferror (stdin) && errno == EAGAIN) | |
1266 | { | |
1267 | /* Not a real EOF. Wait a little while and try again until | |
1268 | we read something. */ | |
1269 | clearerr (stdin); | |
1270 | gdb_usleep (10000); | |
1271 | answer = fgetc (stdin); | |
1272 | } | |
1273 | ||
cbdeadca JJ |
1274 | clearerr (stdin); /* in case of C-d */ |
1275 | if (answer == EOF) /* C-d */ | |
1276 | { | |
fa3fd85b | 1277 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1278 | retval = def_value; |
1279 | break; | |
1280 | } | |
581e13c1 | 1281 | /* Eat rest of input line, to EOF or newline. */ |
cbdeadca JJ |
1282 | if (answer != '\n') |
1283 | do | |
1284 | { | |
1285 | ans2 = fgetc (stdin); | |
1286 | clearerr (stdin); | |
1287 | } | |
1288 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); | |
1289 | ||
1290 | if (answer >= 'a') | |
1291 | answer -= 040; | |
1292 | /* Check answer. For the non-default, the user must specify | |
1293 | the non-default explicitly. */ | |
1294 | if (answer == not_def_answer) | |
1295 | { | |
1296 | retval = !def_value; | |
1297 | break; | |
1298 | } | |
981c7f5a DJ |
1299 | /* Otherwise, if a default was specified, the user may either |
1300 | specify the required input or have it default by entering | |
1301 | nothing. */ | |
1302 | if (answer == def_answer | |
1303 | || (defchar != '\0' && | |
1304 | (answer == '\n' || answer == '\r' || answer == EOF))) | |
cbdeadca JJ |
1305 | { |
1306 | retval = def_value; | |
1307 | break; | |
1308 | } | |
1309 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1310 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1311 | y_string, n_string); |
1312 | } | |
1313 | ||
260c0b2a DE |
1314 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1315 | gettimeofday (&prompt_ended, NULL); | |
1316 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1317 | timeval_add (&prompt_for_continue_wait_time, | |
1318 | &prompt_for_continue_wait_time, &prompt_delta); | |
1319 | ||
981c7f5a | 1320 | xfree (question); |
cbdeadca | 1321 | if (annotation_level > 1) |
a3f17187 | 1322 | printf_filtered (("\n\032\032post-query\n")); |
cbdeadca JJ |
1323 | return retval; |
1324 | } | |
1325 | \f | |
1326 | ||
1327 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1328 | answer is yes, or 0 if answer is defaulted. | |
1329 | Takes three args which are given to printf to print the question. | |
1330 | The first, a control string, should end in "? ". | |
1331 | It should not say how to answer, because we do that. */ | |
1332 | ||
1333 | int | |
1334 | nquery (const char *ctlstr, ...) | |
1335 | { | |
1336 | va_list args; | |
899500d6 | 1337 | int ret; |
cbdeadca JJ |
1338 | |
1339 | va_start (args, ctlstr); | |
899500d6 | 1340 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1341 | va_end (args); |
899500d6 | 1342 | return ret; |
cbdeadca JJ |
1343 | } |
1344 | ||
1345 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1346 | answer is yes, or 1 if answer is defaulted. | |
1347 | Takes three args which are given to printf to print the question. | |
1348 | The first, a control string, should end in "? ". | |
1349 | It should not say how to answer, because we do that. */ | |
1350 | ||
1351 | int | |
1352 | yquery (const char *ctlstr, ...) | |
1353 | { | |
1354 | va_list args; | |
899500d6 | 1355 | int ret; |
cbdeadca JJ |
1356 | |
1357 | va_start (args, ctlstr); | |
899500d6 | 1358 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1359 | va_end (args); |
899500d6 | 1360 | return ret; |
cbdeadca JJ |
1361 | } |
1362 | ||
981c7f5a DJ |
1363 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
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 | query (const char *ctlstr, ...) | |
1370 | { | |
1371 | va_list args; | |
899500d6 | 1372 | int ret; |
981c7f5a DJ |
1373 | |
1374 | va_start (args, ctlstr); | |
899500d6 | 1375 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1376 | va_end (args); |
899500d6 | 1377 | return ret; |
981c7f5a DJ |
1378 | } |
1379 | ||
6c7a06a3 TT |
1380 | /* A helper for parse_escape that converts a host character to a |
1381 | target character. C is the host character. If conversion is | |
1382 | possible, then the target character is stored in *TARGET_C and the | |
1383 | function returns 1. Otherwise, the function returns 0. */ | |
1384 | ||
1385 | static int | |
f870a310 | 1386 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1387 | { |
6c7a06a3 TT |
1388 | struct obstack host_data; |
1389 | char the_char = c; | |
1390 | struct cleanup *cleanups; | |
1391 | int result = 0; | |
234b45d4 | 1392 | |
6c7a06a3 TT |
1393 | obstack_init (&host_data); |
1394 | cleanups = make_cleanup_obstack_free (&host_data); | |
234b45d4 | 1395 | |
f870a310 | 1396 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1397 | (gdb_byte *) &the_char, 1, 1, |
1398 | &host_data, translit_none); | |
6c7a06a3 TT |
1399 | |
1400 | if (obstack_object_size (&host_data) == 1) | |
1401 | { | |
1402 | result = 1; | |
1403 | *target_c = *(char *) obstack_base (&host_data); | |
1404 | } | |
1405 | ||
1406 | do_cleanups (cleanups); | |
1407 | return result; | |
234b45d4 KB |
1408 | } |
1409 | ||
c906108c SS |
1410 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1411 | containing a pointer to the string to parse. That pointer | |
1412 | should point to the character after the \. That pointer | |
1413 | is updated past the characters we use. The value of the | |
1414 | escape sequence is returned. | |
1415 | ||
1416 | A negative value means the sequence \ newline was seen, | |
1417 | which is supposed to be equivalent to nothing at all. | |
1418 | ||
1419 | If \ is followed by a null character, we return a negative | |
1420 | value and leave the string pointer pointing at the null character. | |
1421 | ||
1422 | If \ is followed by 000, we return 0 and leave the string pointer | |
1423 | after the zeros. A value of 0 does not mean end of string. */ | |
1424 | ||
1425 | int | |
d7561cbb | 1426 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1427 | { |
581e13c1 | 1428 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1429 | int c = *(*string_ptr)++; |
e0627e85 | 1430 | |
6c7a06a3 TT |
1431 | switch (c) |
1432 | { | |
8731e58e AC |
1433 | case '\n': |
1434 | return -2; | |
1435 | case 0: | |
1436 | (*string_ptr)--; | |
1437 | return 0; | |
8731e58e AC |
1438 | |
1439 | case '0': | |
1440 | case '1': | |
1441 | case '2': | |
1442 | case '3': | |
1443 | case '4': | |
1444 | case '5': | |
1445 | case '6': | |
1446 | case '7': | |
1447 | { | |
6c7a06a3 | 1448 | int i = host_hex_value (c); |
aa1ee363 | 1449 | int count = 0; |
8731e58e AC |
1450 | while (++count < 3) |
1451 | { | |
5cb316ef | 1452 | c = (**string_ptr); |
6c7a06a3 | 1453 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1454 | { |
5cb316ef | 1455 | (*string_ptr)++; |
8731e58e | 1456 | i *= 8; |
6c7a06a3 | 1457 | i += host_hex_value (c); |
8731e58e AC |
1458 | } |
1459 | else | |
1460 | { | |
8731e58e AC |
1461 | break; |
1462 | } | |
1463 | } | |
1464 | return i; | |
1465 | } | |
6c7a06a3 TT |
1466 | |
1467 | case 'a': | |
1468 | c = '\a'; | |
1469 | break; | |
1470 | case 'b': | |
1471 | c = '\b'; | |
1472 | break; | |
1473 | case 'f': | |
1474 | c = '\f'; | |
1475 | break; | |
1476 | case 'n': | |
1477 | c = '\n'; | |
1478 | break; | |
1479 | case 'r': | |
1480 | c = '\r'; | |
1481 | break; | |
1482 | case 't': | |
1483 | c = '\t'; | |
1484 | break; | |
1485 | case 'v': | |
1486 | c = '\v'; | |
1487 | break; | |
1488 | ||
1489 | default: | |
1490 | break; | |
1491 | } | |
1492 | ||
f870a310 | 1493 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1494 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1495 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1496 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1497 | return target_char; |
c906108c SS |
1498 | } |
1499 | \f | |
1500 | /* Print the character C on STREAM as part of the contents of a literal | |
1501 | string whose delimiter is QUOTER. Note that this routine should only | |
1502 | be call for printing things which are independent of the language | |
6ef284bd SM |
1503 | of the program being debugged. |
1504 | ||
1505 | printchar will normally escape backslashes and instances of QUOTER. If | |
1506 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1507 | As a side effect, if you pass the backslash character as the QUOTER, | |
1508 | printchar will escape backslashes as usual, but not any other quoting | |
1509 | character. */ | |
c906108c | 1510 | |
43e526b9 | 1511 | static void |
74f832da | 1512 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1513 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1514 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1515 | { |
c906108c SS |
1516 | c &= 0xFF; /* Avoid sign bit follies */ |
1517 | ||
c5aa993b JM |
1518 | if (c < 0x20 || /* Low control chars */ |
1519 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1520 | (sevenbit_strings && c >= 0x80)) | |
1521 | { /* high order bit set */ | |
1522 | switch (c) | |
1523 | { | |
1524 | case '\n': | |
43e526b9 | 1525 | do_fputs ("\\n", stream); |
c5aa993b JM |
1526 | break; |
1527 | case '\b': | |
43e526b9 | 1528 | do_fputs ("\\b", stream); |
c5aa993b JM |
1529 | break; |
1530 | case '\t': | |
43e526b9 | 1531 | do_fputs ("\\t", stream); |
c5aa993b JM |
1532 | break; |
1533 | case '\f': | |
43e526b9 | 1534 | do_fputs ("\\f", stream); |
c5aa993b JM |
1535 | break; |
1536 | case '\r': | |
43e526b9 | 1537 | do_fputs ("\\r", stream); |
c5aa993b JM |
1538 | break; |
1539 | case '\033': | |
43e526b9 | 1540 | do_fputs ("\\e", stream); |
c5aa993b JM |
1541 | break; |
1542 | case '\007': | |
43e526b9 | 1543 | do_fputs ("\\a", stream); |
c5aa993b JM |
1544 | break; |
1545 | default: | |
43e526b9 | 1546 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1547 | break; |
1548 | } | |
1549 | } | |
1550 | else | |
1551 | { | |
6ef284bd | 1552 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1553 | do_fputs ("\\", stream); |
1554 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1555 | } |
c906108c | 1556 | } |
43e526b9 JM |
1557 | |
1558 | /* Print the character C on STREAM as part of the contents of a | |
1559 | literal string whose delimiter is QUOTER. Note that these routines | |
1560 | should only be call for printing things which are independent of | |
581e13c1 | 1561 | the language of the program being debugged. */ |
43e526b9 JM |
1562 | |
1563 | void | |
fba45db2 | 1564 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1565 | { |
1566 | while (*str) | |
1567 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1568 | } | |
1569 | ||
1570 | void | |
fba45db2 | 1571 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1572 | { |
1573 | while (*str) | |
1574 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1575 | } | |
1576 | ||
0876f84a DJ |
1577 | void |
1578 | fputstrn_filtered (const char *str, int n, int quoter, | |
1579 | struct ui_file *stream) | |
1580 | { | |
1581 | int i; | |
e0627e85 | 1582 | |
0876f84a DJ |
1583 | for (i = 0; i < n; i++) |
1584 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1585 | } | |
1586 | ||
43e526b9 | 1587 | void |
8731e58e AC |
1588 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1589 | struct ui_file *stream) | |
43e526b9 JM |
1590 | { |
1591 | int i; | |
5d502164 | 1592 | |
43e526b9 JM |
1593 | for (i = 0; i < n; i++) |
1594 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1595 | } | |
c906108c | 1596 | \f |
c5aa993b | 1597 | |
c906108c SS |
1598 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1599 | static unsigned int lines_per_page; | |
920d2a44 AC |
1600 | static void |
1601 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1602 | struct cmd_list_element *c, const char *value) | |
1603 | { | |
3e43a32a MS |
1604 | fprintf_filtered (file, |
1605 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1606 | value); |
1607 | } | |
eb0d3137 | 1608 | |
cbfbd72a | 1609 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1610 | static unsigned int chars_per_line; |
920d2a44 AC |
1611 | static void |
1612 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1613 | struct cmd_list_element *c, const char *value) | |
1614 | { | |
3e43a32a MS |
1615 | fprintf_filtered (file, |
1616 | _("Number of characters gdb thinks " | |
1617 | "are in a line is %s.\n"), | |
920d2a44 AC |
1618 | value); |
1619 | } | |
eb0d3137 | 1620 | |
c906108c SS |
1621 | /* Current count of lines printed on this page, chars on this line. */ |
1622 | static unsigned int lines_printed, chars_printed; | |
1623 | ||
1624 | /* Buffer and start column of buffered text, for doing smarter word- | |
1625 | wrapping. When someone calls wrap_here(), we start buffering output | |
1626 | that comes through fputs_filtered(). If we see a newline, we just | |
1627 | spit it out and forget about the wrap_here(). If we see another | |
1628 | wrap_here(), we spit it out and remember the newer one. If we see | |
1629 | the end of the line, we spit out a newline, the indent, and then | |
1630 | the buffered output. */ | |
1631 | ||
1632 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1633 | are waiting to be output (they have already been counted in chars_printed). | |
1634 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1635 | static char *wrap_buffer; | |
1636 | ||
1637 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1638 | static char *wrap_pointer; | |
1639 | ||
1640 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1641 | is non-zero. */ | |
1642 | static char *wrap_indent; | |
1643 | ||
1644 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1645 | is not in effect. */ | |
1646 | static int wrap_column; | |
c906108c | 1647 | \f |
c5aa993b | 1648 | |
eb0d3137 MK |
1649 | /* Inialize the number of lines per page and chars per line. */ |
1650 | ||
c906108c | 1651 | void |
fba45db2 | 1652 | init_page_info (void) |
c906108c | 1653 | { |
5da1313b JK |
1654 | if (batch_flag) |
1655 | { | |
1656 | lines_per_page = UINT_MAX; | |
1657 | chars_per_line = UINT_MAX; | |
1658 | } | |
1659 | else | |
c906108c | 1660 | #if defined(TUI) |
5ecb1806 | 1661 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1662 | #endif |
1663 | { | |
eb0d3137 | 1664 | int rows, cols; |
c906108c | 1665 | |
ec145965 EZ |
1666 | #if defined(__GO32__) |
1667 | rows = ScreenRows (); | |
1668 | cols = ScreenCols (); | |
1669 | lines_per_page = rows; | |
1670 | chars_per_line = cols; | |
1671 | #else | |
eb0d3137 MK |
1672 | /* Make sure Readline has initialized its terminal settings. */ |
1673 | rl_reset_terminal (NULL); | |
c906108c | 1674 | |
eb0d3137 MK |
1675 | /* Get the screen size from Readline. */ |
1676 | rl_get_screen_size (&rows, &cols); | |
1677 | lines_per_page = rows; | |
1678 | chars_per_line = cols; | |
c906108c | 1679 | |
1a66331e PM |
1680 | /* Readline should have fetched the termcap entry for us. |
1681 | Only try to use tgetnum function if rl_get_screen_size | |
1682 | did not return a useful value. */ | |
1683 | if (((rows <= 0) && (tgetnum ("li") < 0)) | |
1684 | /* Also disable paging if inside EMACS. */ | |
1685 | || getenv ("EMACS")) | |
eb0d3137 | 1686 | { |
1a66331e PM |
1687 | /* The number of lines per page is not mentioned in the terminal |
1688 | description or EMACS evironment variable is set. This probably | |
1689 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1690 | lines_per_page = UINT_MAX; |
1691 | } | |
c906108c | 1692 | |
c906108c | 1693 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1694 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1695 | lines_per_page = UINT_MAX; |
eb0d3137 | 1696 | #endif |
ec145965 | 1697 | } |
eb0d3137 MK |
1698 | |
1699 | set_screen_size (); | |
c5aa993b | 1700 | set_width (); |
c906108c SS |
1701 | } |
1702 | ||
5da1313b JK |
1703 | /* Helper for make_cleanup_restore_page_info. */ |
1704 | ||
1705 | static void | |
1706 | do_restore_page_info_cleanup (void *arg) | |
1707 | { | |
1708 | set_screen_size (); | |
1709 | set_width (); | |
1710 | } | |
1711 | ||
1712 | /* Provide cleanup for restoring the terminal size. */ | |
1713 | ||
1714 | struct cleanup * | |
1715 | make_cleanup_restore_page_info (void) | |
1716 | { | |
1717 | struct cleanup *back_to; | |
1718 | ||
1719 | back_to = make_cleanup (do_restore_page_info_cleanup, NULL); | |
1720 | make_cleanup_restore_uinteger (&lines_per_page); | |
1721 | make_cleanup_restore_uinteger (&chars_per_line); | |
1722 | ||
1723 | return back_to; | |
1724 | } | |
1725 | ||
1726 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. | |
1727 | Provide cleanup for restoring the original state. */ | |
1728 | ||
1729 | struct cleanup * | |
1730 | set_batch_flag_and_make_cleanup_restore_page_info (void) | |
1731 | { | |
1732 | struct cleanup *back_to = make_cleanup_restore_page_info (); | |
1733 | ||
1734 | make_cleanup_restore_integer (&batch_flag); | |
1735 | batch_flag = 1; | |
1736 | init_page_info (); | |
1737 | ||
1738 | return back_to; | |
1739 | } | |
1740 | ||
eb0d3137 MK |
1741 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1742 | ||
1743 | static void | |
1744 | set_screen_size (void) | |
1745 | { | |
1746 | int rows = lines_per_page; | |
1747 | int cols = chars_per_line; | |
1748 | ||
1749 | if (rows <= 0) | |
1750 | rows = INT_MAX; | |
1751 | ||
1752 | if (cols <= 0) | |
0caa462c | 1753 | cols = INT_MAX; |
eb0d3137 MK |
1754 | |
1755 | /* Update Readline's idea of the terminal size. */ | |
1756 | rl_set_screen_size (rows, cols); | |
1757 | } | |
1758 | ||
1759 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1760 | CHARS_PER_LINE. */ | |
1761 | ||
c906108c | 1762 | static void |
fba45db2 | 1763 | set_width (void) |
c906108c SS |
1764 | { |
1765 | if (chars_per_line == 0) | |
c5aa993b | 1766 | init_page_info (); |
c906108c SS |
1767 | |
1768 | if (!wrap_buffer) | |
1769 | { | |
1770 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1771 | wrap_buffer[0] = '\0'; | |
1772 | } | |
1773 | else | |
1774 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1775 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1776 | } |
1777 | ||
c5aa993b | 1778 | static void |
fba45db2 | 1779 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1780 | { |
eb0d3137 | 1781 | set_screen_size (); |
c906108c SS |
1782 | set_width (); |
1783 | } | |
1784 | ||
eb0d3137 MK |
1785 | static void |
1786 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1787 | { | |
1788 | set_screen_size (); | |
1789 | } | |
1790 | ||
c906108c SS |
1791 | /* Wait, so the user can read what's on the screen. Prompt the user |
1792 | to continue by pressing RETURN. */ | |
1793 | ||
1794 | static void | |
fba45db2 | 1795 | prompt_for_continue (void) |
c906108c SS |
1796 | { |
1797 | char *ignore; | |
1798 | char cont_prompt[120]; | |
260c0b2a DE |
1799 | /* Used to add duration we waited for user to respond to |
1800 | prompt_for_continue_wait_time. */ | |
1801 | struct timeval prompt_started, prompt_ended, prompt_delta; | |
1802 | ||
1803 | gettimeofday (&prompt_started, NULL); | |
c906108c SS |
1804 | |
1805 | if (annotation_level > 1) | |
a3f17187 | 1806 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1807 | |
1808 | strcpy (cont_prompt, | |
1809 | "---Type <return> to continue, or q <return> to quit---"); | |
1810 | if (annotation_level > 1) | |
1811 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1812 | ||
1813 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1814 | call us -- thinking that we're trying to print beyond the end of the | |
1815 | screen. */ | |
1816 | reinitialize_more_filter (); | |
1817 | ||
1818 | immediate_quit++; | |
522002f9 | 1819 | QUIT; |
82584158 PA |
1820 | |
1821 | /* We'll need to handle input. */ | |
1822 | target_terminal_ours (); | |
1823 | ||
c906108c SS |
1824 | /* On a real operating system, the user can quit with SIGINT. |
1825 | But not on GO32. | |
1826 | ||
1827 | 'q' is provided on all systems so users don't have to change habits | |
1828 | from system to system, and because telling them what to do in | |
1829 | the prompt is more user-friendly than expecting them to think of | |
1830 | SIGINT. */ | |
1831 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1832 | whereas control-C to gdb_readline will cause the user to get dumped | |
1833 | out to DOS. */ | |
b4f5539f | 1834 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c | 1835 | |
260c0b2a DE |
1836 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
1837 | gettimeofday (&prompt_ended, NULL); | |
1838 | timeval_sub (&prompt_delta, &prompt_ended, &prompt_started); | |
1839 | timeval_add (&prompt_for_continue_wait_time, | |
1840 | &prompt_for_continue_wait_time, &prompt_delta); | |
1841 | ||
c906108c | 1842 | if (annotation_level > 1) |
a3f17187 | 1843 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c SS |
1844 | |
1845 | if (ignore) | |
1846 | { | |
1847 | char *p = ignore; | |
5d502164 | 1848 | |
c906108c SS |
1849 | while (*p == ' ' || *p == '\t') |
1850 | ++p; | |
1851 | if (p[0] == 'q') | |
522002f9 | 1852 | quit (); |
b8c9b27d | 1853 | xfree (ignore); |
c906108c SS |
1854 | } |
1855 | immediate_quit--; | |
1856 | ||
1857 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1858 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1859 | reinitialize_more_filter (); | |
1860 | ||
581e13c1 | 1861 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
c906108c SS |
1862 | } |
1863 | ||
bd712aed DE |
1864 | /* Initalize timer to keep track of how long we waited for the user. */ |
1865 | ||
1866 | void | |
1867 | reset_prompt_for_continue_wait_time (void) | |
1868 | { | |
1869 | static const struct timeval zero_timeval = { 0 }; | |
1870 | ||
1871 | prompt_for_continue_wait_time = zero_timeval; | |
1872 | } | |
1873 | ||
1874 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1875 | ||
1876 | struct timeval | |
1877 | get_prompt_for_continue_wait_time (void) | |
1878 | { | |
1879 | return prompt_for_continue_wait_time; | |
1880 | } | |
1881 | ||
c906108c SS |
1882 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1883 | ||
1884 | void | |
fba45db2 | 1885 | reinitialize_more_filter (void) |
c906108c SS |
1886 | { |
1887 | lines_printed = 0; | |
1888 | chars_printed = 0; | |
1889 | } | |
1890 | ||
1891 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1892 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1893 | If INDENT is non-null, it is a string to be printed to indent the |
1894 | wrapped part on the next line. INDENT must remain accessible until | |
1895 | the next call to wrap_here() or until a newline is printed through | |
1896 | fputs_filtered(). | |
1897 | ||
1898 | If the line is already overfull, we immediately print a newline and | |
1899 | the indentation, and disable further wrapping. | |
1900 | ||
1901 | If we don't know the width of lines, but we know the page height, | |
1902 | we must not wrap words, but should still keep track of newlines | |
1903 | that were explicitly printed. | |
1904 | ||
1905 | INDENT should not contain tabs, as that will mess up the char count | |
1906 | on the next line. FIXME. | |
1907 | ||
1908 | This routine is guaranteed to force out any output which has been | |
1909 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1910 | used to force out output from the wrap_buffer. */ | |
1911 | ||
1912 | void | |
fba45db2 | 1913 | wrap_here (char *indent) |
c906108c | 1914 | { |
581e13c1 | 1915 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1916 | if (!wrap_buffer) |
3e43a32a MS |
1917 | internal_error (__FILE__, __LINE__, |
1918 | _("failed internal consistency check")); | |
c906108c SS |
1919 | |
1920 | if (wrap_buffer[0]) | |
1921 | { | |
1922 | *wrap_pointer = '\0'; | |
1923 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1924 | } | |
1925 | wrap_pointer = wrap_buffer; | |
1926 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1927 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1928 | { |
1929 | wrap_column = 0; | |
1930 | } | |
1931 | else if (chars_printed >= chars_per_line) | |
1932 | { | |
1933 | puts_filtered ("\n"); | |
1934 | if (indent != NULL) | |
1935 | puts_filtered (indent); | |
1936 | wrap_column = 0; | |
1937 | } | |
1938 | else | |
1939 | { | |
1940 | wrap_column = chars_printed; | |
1941 | if (indent == NULL) | |
1942 | wrap_indent = ""; | |
1943 | else | |
1944 | wrap_indent = indent; | |
1945 | } | |
1946 | } | |
1947 | ||
4a351cef | 1948 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1949 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1950 | right or left justified in the column. Never prints |
1951 | trailing spaces. String should never be longer than | |
1952 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1953 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1954 | |
1955 | void | |
1956 | puts_filtered_tabular (char *string, int width, int right) | |
1957 | { | |
1958 | int spaces = 0; | |
1959 | int stringlen; | |
1960 | char *spacebuf; | |
1961 | ||
1962 | gdb_assert (chars_per_line > 0); | |
1963 | if (chars_per_line == UINT_MAX) | |
1964 | { | |
1965 | fputs_filtered (string, gdb_stdout); | |
1966 | fputs_filtered ("\n", gdb_stdout); | |
1967 | return; | |
1968 | } | |
1969 | ||
1970 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1971 | fputs_filtered ("\n", gdb_stdout); | |
1972 | ||
1973 | if (width >= chars_per_line) | |
1974 | width = chars_per_line - 1; | |
1975 | ||
1976 | stringlen = strlen (string); | |
1977 | ||
1978 | if (chars_printed > 0) | |
1979 | spaces = width - (chars_printed - 1) % width - 1; | |
1980 | if (right) | |
1981 | spaces += width - stringlen; | |
1982 | ||
1983 | spacebuf = alloca (spaces + 1); | |
1984 | spacebuf[spaces] = '\0'; | |
1985 | while (spaces--) | |
1986 | spacebuf[spaces] = ' '; | |
1987 | ||
1988 | fputs_filtered (spacebuf, gdb_stdout); | |
1989 | fputs_filtered (string, gdb_stdout); | |
1990 | } | |
1991 | ||
1992 | ||
c906108c | 1993 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 1994 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 1995 | any pending output for the current line, flush it and start a new |
581e13c1 | 1996 | line. Otherwise do nothing. */ |
c906108c SS |
1997 | |
1998 | void | |
fba45db2 | 1999 | begin_line (void) |
c906108c SS |
2000 | { |
2001 | if (chars_printed > 0) | |
2002 | { | |
2003 | puts_filtered ("\n"); | |
2004 | } | |
2005 | } | |
2006 | ||
ac9a91a7 | 2007 | |
c906108c SS |
2008 | /* Like fputs but if FILTER is true, pause after every screenful. |
2009 | ||
2010 | Regardless of FILTER can wrap at points other than the final | |
2011 | character of a line. | |
2012 | ||
2013 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
2014 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
2015 | anything. | |
2016 | ||
2017 | Note that a longjmp to top level may occur in this routine (only if | |
2018 | FILTER is true) (since prompt_for_continue may do so) so this | |
2019 | routine should not be called when cleanups are not in place. */ | |
2020 | ||
2021 | static void | |
fba45db2 KB |
2022 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
2023 | int filter) | |
c906108c SS |
2024 | { |
2025 | const char *lineptr; | |
2026 | ||
2027 | if (linebuffer == 0) | |
2028 | return; | |
2029 | ||
2030 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 2031 | if (stream != gdb_stdout |
b2e7f004 JK |
2032 | || !pagination_enabled |
2033 | || batch_flag | |
390a8aca | 2034 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 2035 | || top_level_interpreter () == NULL |
390a8aca | 2036 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
c906108c SS |
2037 | { |
2038 | fputs_unfiltered (linebuffer, stream); | |
2039 | return; | |
2040 | } | |
2041 | ||
2042 | /* Go through and output each character. Show line extension | |
2043 | when this is necessary; prompt user for new page when this is | |
2044 | necessary. */ | |
c5aa993b | 2045 | |
c906108c SS |
2046 | lineptr = linebuffer; |
2047 | while (*lineptr) | |
2048 | { | |
2049 | /* Possible new page. */ | |
8731e58e | 2050 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
2051 | prompt_for_continue (); |
2052 | ||
2053 | while (*lineptr && *lineptr != '\n') | |
2054 | { | |
2055 | /* Print a single line. */ | |
2056 | if (*lineptr == '\t') | |
2057 | { | |
2058 | if (wrap_column) | |
2059 | *wrap_pointer++ = '\t'; | |
2060 | else | |
2061 | fputc_unfiltered ('\t', stream); | |
2062 | /* Shifting right by 3 produces the number of tab stops | |
2063 | we have already passed, and then adding one and | |
c5aa993b | 2064 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
2065 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
2066 | lineptr++; | |
2067 | } | |
2068 | else | |
2069 | { | |
2070 | if (wrap_column) | |
2071 | *wrap_pointer++ = *lineptr; | |
2072 | else | |
c5aa993b | 2073 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
2074 | chars_printed++; |
2075 | lineptr++; | |
2076 | } | |
c5aa993b | 2077 | |
c906108c SS |
2078 | if (chars_printed >= chars_per_line) |
2079 | { | |
2080 | unsigned int save_chars = chars_printed; | |
2081 | ||
2082 | chars_printed = 0; | |
2083 | lines_printed++; | |
2084 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
2085 | if chars_per_line is right, we probably just overflowed |
2086 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
2087 | if (wrap_column) |
2088 | fputc_unfiltered ('\n', stream); | |
2089 | ||
2090 | /* Possible new page. */ | |
2091 | if (lines_printed >= lines_per_page - 1) | |
2092 | prompt_for_continue (); | |
2093 | ||
581e13c1 | 2094 | /* Now output indentation and wrapped string. */ |
c906108c SS |
2095 | if (wrap_column) |
2096 | { | |
2097 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
2098 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
2099 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
2100 | /* FIXME, this strlen is what prevents wrap_indent from |
2101 | containing tabs. However, if we recurse to print it | |
2102 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 2103 | longer than (the user settable) chars_per_line. |
c906108c SS |
2104 | Note also that this can set chars_printed > chars_per_line |
2105 | if we are printing a long string. */ | |
2106 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 2107 | + (save_chars - wrap_column); |
c906108c SS |
2108 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
2109 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
2110 | wrap_column = 0; /* And disable fancy wrap */ |
2111 | } | |
c906108c SS |
2112 | } |
2113 | } | |
2114 | ||
2115 | if (*lineptr == '\n') | |
2116 | { | |
2117 | chars_printed = 0; | |
3e43a32a MS |
2118 | wrap_here ((char *) 0); /* Spit out chars, cancel |
2119 | further wraps. */ | |
c906108c SS |
2120 | lines_printed++; |
2121 | fputc_unfiltered ('\n', stream); | |
2122 | lineptr++; | |
2123 | } | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | void | |
fba45db2 | 2128 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
2129 | { |
2130 | fputs_maybe_filtered (linebuffer, stream, 1); | |
2131 | } | |
2132 | ||
2133 | int | |
fba45db2 | 2134 | putchar_unfiltered (int c) |
c906108c | 2135 | { |
11cf8741 | 2136 | char buf = c; |
e0627e85 | 2137 | |
d9fcf2fb | 2138 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
2139 | return c; |
2140 | } | |
2141 | ||
d1f4cff8 AC |
2142 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
2143 | May return nonlocally. */ | |
2144 | ||
2145 | int | |
2146 | putchar_filtered (int c) | |
2147 | { | |
2148 | return fputc_filtered (c, gdb_stdout); | |
2149 | } | |
2150 | ||
c906108c | 2151 | int |
fba45db2 | 2152 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2153 | { |
11cf8741 | 2154 | char buf = c; |
e0627e85 | 2155 | |
d9fcf2fb | 2156 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2157 | return c; |
2158 | } | |
2159 | ||
2160 | int | |
fba45db2 | 2161 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2162 | { |
2163 | char buf[2]; | |
2164 | ||
2165 | buf[0] = c; | |
2166 | buf[1] = 0; | |
2167 | fputs_filtered (buf, stream); | |
2168 | return c; | |
2169 | } | |
2170 | ||
2171 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2172 | characters in printable fashion. */ | |
2173 | ||
2174 | void | |
fba45db2 | 2175 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2176 | { |
2177 | int ch; | |
2178 | ||
2179 | /* Print prefix and suffix after each line. */ | |
2180 | static int new_line = 1; | |
2181 | static int return_p = 0; | |
2182 | static char *prev_prefix = ""; | |
2183 | static char *prev_suffix = ""; | |
2184 | ||
2185 | if (*string == '\n') | |
2186 | return_p = 0; | |
2187 | ||
2188 | /* If the prefix is changing, print the previous suffix, a new line, | |
2189 | and the new prefix. */ | |
c5aa993b | 2190 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2191 | { |
9846de1b JM |
2192 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2193 | fputs_unfiltered ("\n", gdb_stdlog); | |
2194 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2195 | } |
2196 | ||
2197 | /* Print prefix if we printed a newline during the previous call. */ | |
2198 | if (new_line) | |
2199 | { | |
2200 | new_line = 0; | |
9846de1b | 2201 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2202 | } |
2203 | ||
2204 | prev_prefix = prefix; | |
2205 | prev_suffix = suffix; | |
2206 | ||
2207 | /* Output characters in a printable format. */ | |
2208 | while ((ch = *string++) != '\0') | |
2209 | { | |
2210 | switch (ch) | |
c5aa993b | 2211 | { |
c906108c SS |
2212 | default: |
2213 | if (isprint (ch)) | |
9846de1b | 2214 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2215 | |
2216 | else | |
9846de1b | 2217 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2218 | break; |
2219 | ||
c5aa993b JM |
2220 | case '\\': |
2221 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2222 | break; | |
2223 | case '\b': | |
2224 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2225 | break; | |
2226 | case '\f': | |
2227 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2228 | break; | |
2229 | case '\n': | |
2230 | new_line = 1; | |
2231 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2232 | break; | |
2233 | case '\r': | |
2234 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2235 | break; | |
2236 | case '\t': | |
2237 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2238 | break; | |
2239 | case '\v': | |
2240 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2241 | break; | |
2242 | } | |
c906108c SS |
2243 | |
2244 | return_p = ch == '\r'; | |
2245 | } | |
2246 | ||
2247 | /* Print suffix if we printed a newline. */ | |
2248 | if (new_line) | |
2249 | { | |
9846de1b JM |
2250 | fputs_unfiltered (suffix, gdb_stdlog); |
2251 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2252 | } |
2253 | } | |
2254 | ||
2255 | ||
2256 | /* Print a variable number of ARGS using format FORMAT. If this | |
2257 | information is going to put the amount written (since the last call | |
2258 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2259 | call prompt_for_continue to get the users permision to continue. | |
2260 | ||
2261 | Unlike fprintf, this function does not return a value. | |
2262 | ||
2263 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2264 | fprintf (takes a stream to write on), and printf (the usual). | |
2265 | ||
2266 | Note also that a longjmp to top level may occur in this routine | |
2267 | (since prompt_for_continue may do so) so this routine should not be | |
2268 | called when cleanups are not in place. */ | |
2269 | ||
2270 | static void | |
fba45db2 KB |
2271 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2272 | va_list args, int filter) | |
c906108c SS |
2273 | { |
2274 | char *linebuffer; | |
2275 | struct cleanup *old_cleanups; | |
2276 | ||
e623b504 | 2277 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2278 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2279 | fputs_maybe_filtered (linebuffer, stream, filter); |
2280 | do_cleanups (old_cleanups); | |
2281 | } | |
2282 | ||
2283 | ||
2284 | void | |
fba45db2 | 2285 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2286 | { |
2287 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2288 | } | |
2289 | ||
2290 | void | |
fba45db2 | 2291 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2292 | { |
2293 | char *linebuffer; | |
2294 | struct cleanup *old_cleanups; | |
2295 | ||
e623b504 | 2296 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2297 | old_cleanups = make_cleanup (xfree, linebuffer); |
75feb17d DJ |
2298 | if (debug_timestamp && stream == gdb_stdlog) |
2299 | { | |
2300 | struct timeval tm; | |
2301 | char *timestamp; | |
6e5abd65 | 2302 | int len, need_nl; |
75feb17d DJ |
2303 | |
2304 | gettimeofday (&tm, NULL); | |
6e5abd65 PA |
2305 | |
2306 | len = strlen (linebuffer); | |
2307 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); | |
2308 | ||
2309 | timestamp = xstrprintf ("%ld:%ld %s%s", | |
2310 | (long) tm.tv_sec, (long) tm.tv_usec, | |
2311 | linebuffer, | |
2312 | need_nl ? "\n": ""); | |
75feb17d DJ |
2313 | make_cleanup (xfree, timestamp); |
2314 | fputs_unfiltered (timestamp, stream); | |
2315 | } | |
6e5abd65 PA |
2316 | else |
2317 | fputs_unfiltered (linebuffer, stream); | |
c906108c SS |
2318 | do_cleanups (old_cleanups); |
2319 | } | |
2320 | ||
2321 | void | |
fba45db2 | 2322 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2323 | { |
2324 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2325 | } | |
2326 | ||
2327 | void | |
fba45db2 | 2328 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2329 | { |
2330 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2331 | } | |
2332 | ||
c906108c | 2333 | void |
8731e58e | 2334 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2335 | { |
2336 | va_list args; | |
e0627e85 | 2337 | |
c906108c | 2338 | va_start (args, format); |
c906108c SS |
2339 | vfprintf_filtered (stream, format, args); |
2340 | va_end (args); | |
2341 | } | |
2342 | ||
c906108c | 2343 | void |
8731e58e | 2344 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2345 | { |
2346 | va_list args; | |
e0627e85 | 2347 | |
c906108c | 2348 | va_start (args, format); |
c906108c SS |
2349 | vfprintf_unfiltered (stream, format, args); |
2350 | va_end (args); | |
2351 | } | |
2352 | ||
2353 | /* Like fprintf_filtered, but prints its result indented. | |
2354 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2355 | ||
c906108c | 2356 | void |
8731e58e AC |
2357 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2358 | ...) | |
c906108c SS |
2359 | { |
2360 | va_list args; | |
e0627e85 | 2361 | |
c906108c | 2362 | va_start (args, format); |
c906108c SS |
2363 | print_spaces_filtered (spaces, stream); |
2364 | ||
2365 | vfprintf_filtered (stream, format, args); | |
2366 | va_end (args); | |
2367 | } | |
2368 | ||
2369 | ||
c906108c | 2370 | void |
8731e58e | 2371 | printf_filtered (const char *format, ...) |
c906108c SS |
2372 | { |
2373 | va_list args; | |
e0627e85 | 2374 | |
c906108c | 2375 | va_start (args, format); |
c906108c SS |
2376 | vfprintf_filtered (gdb_stdout, format, args); |
2377 | va_end (args); | |
2378 | } | |
2379 | ||
2380 | ||
c906108c | 2381 | void |
8731e58e | 2382 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2383 | { |
2384 | va_list args; | |
e0627e85 | 2385 | |
c906108c | 2386 | va_start (args, format); |
c906108c SS |
2387 | vfprintf_unfiltered (gdb_stdout, format, args); |
2388 | va_end (args); | |
2389 | } | |
2390 | ||
2391 | /* Like printf_filtered, but prints it's result indented. | |
2392 | Called as printfi_filtered (spaces, format, ...); */ | |
2393 | ||
c906108c | 2394 | void |
8731e58e | 2395 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2396 | { |
2397 | va_list args; | |
e0627e85 | 2398 | |
c906108c | 2399 | va_start (args, format); |
c906108c SS |
2400 | print_spaces_filtered (spaces, gdb_stdout); |
2401 | vfprintf_filtered (gdb_stdout, format, args); | |
2402 | va_end (args); | |
2403 | } | |
2404 | ||
2405 | /* Easy -- but watch out! | |
2406 | ||
2407 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2408 | This one doesn't, and had better not! */ | |
2409 | ||
2410 | void | |
fba45db2 | 2411 | puts_filtered (const char *string) |
c906108c SS |
2412 | { |
2413 | fputs_filtered (string, gdb_stdout); | |
2414 | } | |
2415 | ||
2416 | void | |
fba45db2 | 2417 | puts_unfiltered (const char *string) |
c906108c SS |
2418 | { |
2419 | fputs_unfiltered (string, gdb_stdout); | |
2420 | } | |
2421 | ||
2422 | /* Return a pointer to N spaces and a null. The pointer is good | |
2423 | until the next call to here. */ | |
2424 | char * | |
fba45db2 | 2425 | n_spaces (int n) |
c906108c | 2426 | { |
392a587b JM |
2427 | char *t; |
2428 | static char *spaces = 0; | |
2429 | static int max_spaces = -1; | |
c906108c SS |
2430 | |
2431 | if (n > max_spaces) | |
2432 | { | |
2433 | if (spaces) | |
b8c9b27d | 2434 | xfree (spaces); |
c5aa993b JM |
2435 | spaces = (char *) xmalloc (n + 1); |
2436 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2437 | *--t = ' '; |
2438 | spaces[n] = '\0'; | |
2439 | max_spaces = n; | |
2440 | } | |
2441 | ||
2442 | return spaces + max_spaces - n; | |
2443 | } | |
2444 | ||
2445 | /* Print N spaces. */ | |
2446 | void | |
fba45db2 | 2447 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2448 | { |
2449 | fputs_filtered (n_spaces (n), stream); | |
2450 | } | |
2451 | \f | |
4a351cef | 2452 | /* C++/ObjC demangler stuff. */ |
c906108c | 2453 | |
389e51db AC |
2454 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2455 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2456 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2457 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2458 | |
2459 | void | |
0d5cff50 | 2460 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2461 | enum language lang, int arg_mode) |
c906108c SS |
2462 | { |
2463 | char *demangled; | |
2464 | ||
2465 | if (name != NULL) | |
2466 | { | |
2467 | /* If user wants to see raw output, no problem. */ | |
2468 | if (!demangle) | |
2469 | { | |
2470 | fputs_filtered (name, stream); | |
2471 | } | |
2472 | else | |
2473 | { | |
9a3d7dfd | 2474 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2475 | fputs_filtered (demangled ? demangled : name, stream); |
2476 | if (demangled != NULL) | |
2477 | { | |
b8c9b27d | 2478 | xfree (demangled); |
c906108c SS |
2479 | } |
2480 | } | |
2481 | } | |
2482 | } | |
2483 | ||
2484 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2485 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2486 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2487 | |
c906108c SS |
2488 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2489 | This "feature" is useful when searching for matching C++ function names | |
2490 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
581e13c1 | 2491 | function). */ |
c906108c SS |
2492 | |
2493 | int | |
fba45db2 | 2494 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2495 | { |
2496 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2497 | { | |
2498 | while (isspace (*string1)) | |
2499 | { | |
2500 | string1++; | |
2501 | } | |
2502 | while (isspace (*string2)) | |
2503 | { | |
2504 | string2++; | |
2505 | } | |
559a7a62 JK |
2506 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2507 | break; | |
2508 | if (case_sensitivity == case_sensitive_off | |
2509 | && (tolower ((unsigned char) *string1) | |
2510 | != tolower ((unsigned char) *string2))) | |
2511 | break; | |
c906108c SS |
2512 | if (*string1 != '\0') |
2513 | { | |
2514 | string1++; | |
2515 | string2++; | |
2516 | } | |
2517 | } | |
2518 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2519 | } | |
2de7ced7 | 2520 | |
0fe19209 DC |
2521 | /* This is like strcmp except that it ignores whitespace and treats |
2522 | '(' as the first non-NULL character in terms of ordering. Like | |
2523 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2524 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2525 | according to that ordering. | |
2526 | ||
2527 | If a list is sorted according to this function and if you want to | |
2528 | find names in the list that match some fixed NAME according to | |
2529 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2530 | where this function would put NAME. | |
2531 | ||
559a7a62 JK |
2532 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2533 | may choose it during later lookup. Therefore this function always sorts | |
2534 | primarily case-insensitively and secondarily case-sensitively. | |
2535 | ||
0fe19209 DC |
2536 | Here are some examples of why using strcmp to sort is a bad idea: |
2537 | ||
2538 | Whitespace example: | |
2539 | ||
2540 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2541 | we try to do a search for "foo<char*>", strcmp will locate this | |
2542 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2543 | will start looking at strings beginning with "goo", and will never | |
2544 | see the correct match of "foo<char *>". | |
2545 | ||
2546 | Parenthesis example: | |
2547 | ||
2548 | In practice, this is less like to be an issue, but I'll give it a | |
2549 | shot. Let's assume that '$' is a legitimate character to occur in | |
2550 | symbols. (Which may well even be the case on some systems.) Then | |
2551 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2552 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2553 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2554 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2555 | "foo") is false, so it won't proceed to the actual match of | |
2556 | "foo(int)" with "foo". */ | |
2557 | ||
2558 | int | |
2559 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2560 | { | |
559a7a62 JK |
2561 | const char *saved_string1 = string1, *saved_string2 = string2; |
2562 | enum case_sensitivity case_pass = case_sensitive_off; | |
2563 | ||
2564 | for (;;) | |
0fe19209 | 2565 | { |
b11b1f88 JK |
2566 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2567 | Provide stub characters if we are already at the end of one of the | |
2568 | strings. */ | |
2569 | char c1 = 'X', c2 = 'X'; | |
2570 | ||
2571 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2572 | { |
b11b1f88 JK |
2573 | while (isspace (*string1)) |
2574 | string1++; | |
2575 | while (isspace (*string2)) | |
2576 | string2++; | |
2577 | ||
559a7a62 JK |
2578 | switch (case_pass) |
2579 | { | |
2580 | case case_sensitive_off: | |
2581 | c1 = tolower ((unsigned char) *string1); | |
2582 | c2 = tolower ((unsigned char) *string2); | |
2583 | break; | |
2584 | case case_sensitive_on: | |
b11b1f88 JK |
2585 | c1 = *string1; |
2586 | c2 = *string2; | |
559a7a62 JK |
2587 | break; |
2588 | } | |
b11b1f88 JK |
2589 | if (c1 != c2) |
2590 | break; | |
2591 | ||
2592 | if (*string1 != '\0') | |
2593 | { | |
2594 | string1++; | |
2595 | string2++; | |
2596 | } | |
0fe19209 | 2597 | } |
b11b1f88 JK |
2598 | |
2599 | switch (*string1) | |
0fe19209 | 2600 | { |
b11b1f88 JK |
2601 | /* Characters are non-equal unless they're both '\0'; we want to |
2602 | make sure we get the comparison right according to our | |
2603 | comparison in the cases where one of them is '\0' or '('. */ | |
2604 | case '\0': | |
2605 | if (*string2 == '\0') | |
559a7a62 | 2606 | break; |
b11b1f88 JK |
2607 | else |
2608 | return -1; | |
2609 | case '(': | |
2610 | if (*string2 == '\0') | |
2611 | return 1; | |
2612 | else | |
2613 | return -1; | |
2614 | default: | |
2615 | if (*string2 == '\0' || *string2 == '(') | |
2616 | return 1; | |
559a7a62 JK |
2617 | else if (c1 > c2) |
2618 | return 1; | |
2619 | else if (c1 < c2) | |
2620 | return -1; | |
2621 | /* PASSTHRU */ | |
0fe19209 | 2622 | } |
559a7a62 JK |
2623 | |
2624 | if (case_pass == case_sensitive_on) | |
2625 | return 0; | |
2626 | ||
2627 | /* Otherwise the strings were equal in case insensitive way, make | |
2628 | a more fine grained comparison in a case sensitive way. */ | |
2629 | ||
2630 | case_pass = case_sensitive_on; | |
2631 | string1 = saved_string1; | |
2632 | string2 = saved_string2; | |
0fe19209 | 2633 | } |
0fe19209 DC |
2634 | } |
2635 | ||
2de7ced7 DJ |
2636 | /* A simple comparison function with opposite semantics to strcmp. */ |
2637 | ||
2638 | int | |
2639 | streq (const char *lhs, const char *rhs) | |
2640 | { | |
2641 | return !strcmp (lhs, rhs); | |
2642 | } | |
c906108c | 2643 | \f |
c5aa993b | 2644 | |
c906108c | 2645 | /* |
c5aa993b JM |
2646 | ** subset_compare() |
2647 | ** Answer whether string_to_compare is a full or partial match to | |
2648 | ** template_string. The partial match must be in sequence starting | |
2649 | ** at index 0. | |
2650 | */ | |
c906108c | 2651 | int |
fba45db2 | 2652 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2653 | { |
2654 | int match; | |
e0627e85 | 2655 | |
8731e58e AC |
2656 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2657 | && strlen (string_to_compare) <= strlen (template_string)) | |
2658 | match = | |
2659 | (strncmp | |
2660 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2661 | else |
2662 | match = 0; | |
2663 | return match; | |
2664 | } | |
c906108c | 2665 | |
7a292a7a | 2666 | static void |
fba45db2 | 2667 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2668 | { |
2669 | pagination_enabled = 1; | |
2670 | } | |
2671 | ||
7a292a7a | 2672 | static void |
fba45db2 | 2673 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2674 | { |
2675 | pagination_enabled = 0; | |
2676 | } | |
75feb17d DJ |
2677 | |
2678 | static void | |
2679 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2680 | struct cmd_list_element *c, const char *value) | |
2681 | { | |
3e43a32a MS |
2682 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2683 | value); | |
75feb17d | 2684 | } |
c906108c | 2685 | \f |
c5aa993b | 2686 | |
c906108c | 2687 | void |
fba45db2 | 2688 | initialize_utils (void) |
c906108c | 2689 | { |
35096d9d | 2690 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2691 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2692 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2693 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2694 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2695 | set_width_command, |
920d2a44 | 2696 | show_chars_per_line, |
35096d9d AC |
2697 | &setlist, &showlist); |
2698 | ||
2699 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2700 | Set number of lines in a page for GDB output pagination."), _("\ |
2701 | Show number of lines in a page for GDB output pagination."), _("\ | |
2702 | This affects the number of lines after which GDB will pause\n\ | |
2703 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2704 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2705 | set_height_command, |
920d2a44 | 2706 | show_lines_per_page, |
35096d9d | 2707 | &setlist, &showlist); |
c5aa993b | 2708 | |
c906108c SS |
2709 | init_page_info (); |
2710 | ||
5bf193a2 AC |
2711 | add_setshow_boolean_cmd ("pagination", class_support, |
2712 | &pagination_enabled, _("\ | |
77dec115 EZ |
2713 | Set state of GDB output pagination."), _("\ |
2714 | Show state of GDB output pagination."), _("\ | |
2715 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2716 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2717 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2718 | NULL, |
920d2a44 | 2719 | show_pagination_enabled, |
5bf193a2 | 2720 | &setlist, &showlist); |
4261bedc | 2721 | |
c906108c SS |
2722 | if (xdb_commands) |
2723 | { | |
c5aa993b | 2724 | add_com ("am", class_support, pagination_on_command, |
1bedd215 | 2725 | _("Enable pagination")); |
c5aa993b | 2726 | add_com ("sm", class_support, pagination_off_command, |
1bedd215 | 2727 | _("Disable pagination")); |
c906108c SS |
2728 | } |
2729 | ||
5bf193a2 AC |
2730 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2731 | &sevenbit_strings, _("\ | |
2732 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2733 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2734 | NULL, | |
920d2a44 | 2735 | show_sevenbit_strings, |
5bf193a2 AC |
2736 | &setprintlist, &showprintlist); |
2737 | ||
75feb17d DJ |
2738 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2739 | &debug_timestamp, _("\ | |
2740 | Set timestamping of debugging messages."), _("\ | |
2741 | Show timestamping of debugging messages."), _("\ | |
2742 | When set, debugging messages will be marked with seconds and microseconds."), | |
2743 | NULL, | |
2744 | show_debug_timestamp, | |
2745 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2746 | } |
2747 | ||
66bf4b3a | 2748 | const char * |
5af949e3 | 2749 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2750 | { |
2751 | /* Truncate address to the size of a target address, avoiding shifts | |
2752 | larger or equal than the width of a CORE_ADDR. The local | |
2753 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2754 | when it won't occur. */ |
66bf4b3a AC |
2755 | /* NOTE: This assumes that the significant address information is |
2756 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2757 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2758 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2759 | ||
5af949e3 | 2760 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2761 | |
2762 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2763 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2764 | return hex_string (addr); | |
2765 | } | |
2766 | ||
f1310107 TJB |
2767 | /* This function is described in "defs.h". */ |
2768 | ||
2769 | const char * | |
2770 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2771 | { | |
2772 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2773 | ||
2774 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2775 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2776 | ||
2777 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2778 | that returns the language localized string formatted to a width | |
2779 | based on gdbarch_addr_bit. */ | |
2780 | if (addr_bit <= 32) | |
2781 | return hex_string_custom (address, 8); | |
2782 | else | |
2783 | return hex_string_custom (address, 16); | |
2784 | } | |
2785 | ||
8e3b41a9 JK |
2786 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2787 | ||
2788 | hashval_t | |
2789 | core_addr_hash (const void *ap) | |
2790 | { | |
2791 | const CORE_ADDR *addrp = ap; | |
2792 | ||
2793 | return *addrp; | |
2794 | } | |
2795 | ||
2796 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2797 | ||
2798 | int | |
2799 | core_addr_eq (const void *ap, const void *bp) | |
2800 | { | |
2801 | const CORE_ADDR *addr_ap = ap; | |
2802 | const CORE_ADDR *addr_bp = bp; | |
2803 | ||
2804 | return *addr_ap == *addr_bp; | |
2805 | } | |
2806 | ||
03dd37c3 AC |
2807 | /* Convert a string back into a CORE_ADDR. */ |
2808 | CORE_ADDR | |
2809 | string_to_core_addr (const char *my_string) | |
2810 | { | |
2811 | CORE_ADDR addr = 0; | |
9544c605 | 2812 | |
03dd37c3 AC |
2813 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2814 | { | |
ced572fe | 2815 | /* Assume that it is in hex. */ |
03dd37c3 | 2816 | int i; |
5d502164 | 2817 | |
03dd37c3 AC |
2818 | for (i = 2; my_string[i] != '\0'; i++) |
2819 | { | |
2820 | if (isdigit (my_string[i])) | |
2821 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2822 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2823 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2824 | else | |
63f06803 | 2825 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2826 | } |
2827 | } | |
2828 | else | |
2829 | { | |
2830 | /* Assume that it is in decimal. */ | |
2831 | int i; | |
5d502164 | 2832 | |
03dd37c3 AC |
2833 | for (i = 0; my_string[i] != '\0'; i++) |
2834 | { | |
2835 | if (isdigit (my_string[i])) | |
2836 | addr = (my_string[i] - '0') + (addr * 10); | |
2837 | else | |
63f06803 | 2838 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2839 | } |
2840 | } | |
9544c605 | 2841 | |
03dd37c3 AC |
2842 | return addr; |
2843 | } | |
58d370e0 TT |
2844 | |
2845 | char * | |
2846 | gdb_realpath (const char *filename) | |
2847 | { | |
70d35819 AC |
2848 | /* Method 1: The system has a compile time upper bound on a filename |
2849 | path. Use that and realpath() to canonicalize the name. This is | |
2850 | the most common case. Note that, if there isn't a compile time | |
2851 | upper bound, you want to avoid realpath() at all costs. */ | |
d8d2a3ee | 2852 | #if defined (HAVE_REALPATH) && defined (PATH_MAX) |
70d35819 | 2853 | { |
70d35819 | 2854 | char buf[PATH_MAX]; |
82c0260e | 2855 | const char *rp = realpath (filename, buf); |
5d502164 | 2856 | |
70d35819 AC |
2857 | if (rp == NULL) |
2858 | rp = filename; | |
2859 | return xstrdup (rp); | |
6f88d630 | 2860 | } |
a4db0f07 RH |
2861 | #endif /* HAVE_REALPATH */ |
2862 | ||
70d35819 AC |
2863 | /* Method 2: The host system (i.e., GNU) has the function |
2864 | canonicalize_file_name() which malloc's a chunk of memory and | |
2865 | returns that, use that. */ | |
2866 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2867 | { | |
2868 | char *rp = canonicalize_file_name (filename); | |
5d502164 | 2869 | |
70d35819 AC |
2870 | if (rp == NULL) |
2871 | return xstrdup (filename); | |
2872 | else | |
2873 | return rp; | |
2874 | } | |
58d370e0 | 2875 | #endif |
70d35819 | 2876 | |
6411e720 AC |
2877 | /* FIXME: cagney/2002-11-13: |
2878 | ||
2879 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
7a9dd1b2 | 2880 | to the problems described in method 3, have modified their |
6411e720 AC |
2881 | realpath() implementation so that it will allocate a buffer when |
2882 | NULL is passed in. Before this can be used, though, some sort of | |
2883 | configure time test would need to be added. Otherwize the code | |
2884 | will likely core dump. */ | |
2885 | ||
70d35819 AC |
2886 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2887 | compile time buffer size and no alternative function. Query the | |
2888 | OS, using pathconf(), for the buffer limit. Care is needed | |
2889 | though, some systems do not limit PATH_MAX (return -1 for | |
2890 | pathconf()) making it impossible to pass a correctly sized buffer | |
2891 | to realpath() (it could always overflow). On those systems, we | |
2892 | skip this. */ | |
8c0da261 | 2893 | #if defined (HAVE_REALPATH) && defined (_PC_PATH_MAX) && defined(HAVE_ALLOCA) |
70d35819 AC |
2894 | { |
2895 | /* Find out the max path size. */ | |
2896 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
5d502164 | 2897 | |
70d35819 AC |
2898 | if (path_max > 0) |
2899 | { | |
2900 | /* PATH_MAX is bounded. */ | |
2901 | char *buf = alloca (path_max); | |
2902 | char *rp = realpath (filename, buf); | |
5d502164 | 2903 | |
70d35819 AC |
2904 | return xstrdup (rp ? rp : filename); |
2905 | } | |
2906 | } | |
2907 | #endif | |
2908 | ||
9c5e4386 JB |
2909 | /* The MS Windows method. If we don't have realpath, we assume we |
2910 | don't have symlinks and just canonicalize to a Windows absolute | |
2911 | path. GetFullPath converts ../ and ./ in relative paths to | |
2912 | absolute paths, filling in current drive if one is not given | |
2913 | or using the current directory of a specified drive (eg, "E:foo"). | |
2914 | It also converts all forward slashes to back slashes. */ | |
2915 | /* The file system is case-insensitive but case-preserving. | |
2916 | So we do not lowercase the path. Otherwise, we might not | |
2917 | be able to display the original casing in a given path. */ | |
2918 | #if defined (_WIN32) | |
2919 | { | |
2920 | char buf[MAX_PATH]; | |
2921 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2922 | ||
2923 | if (len > 0 && len < MAX_PATH) | |
2924 | return xstrdup (buf); | |
2925 | } | |
2926 | #endif | |
2927 | ||
70d35819 AC |
2928 | /* This system is a lost cause, just dup the buffer. */ |
2929 | return xstrdup (filename); | |
58d370e0 | 2930 | } |
303c8ebd | 2931 | |
4856b6bc JK |
2932 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2933 | by gdb_realpath. */ | |
2934 | ||
2935 | char * | |
2936 | gdb_realpath_keepfile (const char *filename) | |
2937 | { | |
2938 | const char *base_name = lbasename (filename); | |
2939 | char *dir_name; | |
2940 | char *real_path; | |
2941 | char *result; | |
2942 | ||
2943 | /* Extract the basename of filename, and return immediately | |
2944 | a copy of filename if it does not contain any directory prefix. */ | |
2945 | if (base_name == filename) | |
2946 | return xstrdup (filename); | |
2947 | ||
2948 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2949 | /* Allocate enough space to store the dir_name + plus one extra | |
2950 | character sometimes needed under Windows (see below), and | |
2951 | then the closing \000 character. */ | |
2952 | strncpy (dir_name, filename, base_name - filename); | |
2953 | dir_name[base_name - filename] = '\000'; | |
2954 | ||
2955 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2956 | /* We need to be careful when filename is of the form 'd:foo', which | |
2957 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2958 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2959 | { | |
2960 | dir_name[2] = '.'; | |
2961 | dir_name[3] = '\000'; | |
2962 | } | |
2963 | #endif | |
2964 | ||
2965 | /* Canonicalize the directory prefix, and build the resulting | |
2966 | filename. If the dirname realpath already contains an ending | |
2967 | directory separator, avoid doubling it. */ | |
2968 | real_path = gdb_realpath (dir_name); | |
2969 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2970 | result = concat (real_path, base_name, (char *) NULL); | |
2971 | else | |
2972 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2973 | ||
2974 | xfree (real_path); | |
2975 | return result; | |
2976 | } | |
2977 | ||
04affae3 JK |
2978 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
2979 | PATH cannot be NULL or the empty string. | |
2980 | This does not resolve symlinks however, use gdb_realpath for that. | |
2981 | Space for the result is allocated with malloc. | |
2982 | If the path is already absolute, it is strdup'd. | |
2983 | If there is a problem computing the absolute path, the path is returned | |
2984 | unchanged (still strdup'd). */ | |
2985 | ||
2986 | char * | |
2987 | gdb_abspath (const char *path) | |
2988 | { | |
2989 | gdb_assert (path != NULL && path[0] != '\0'); | |
2990 | ||
2991 | if (path[0] == '~') | |
2992 | return tilde_expand (path); | |
2993 | ||
2994 | if (IS_ABSOLUTE_PATH (path)) | |
2995 | return xstrdup (path); | |
2996 | ||
2997 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
2998 | return concat (current_directory, | |
2999 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
3000 | ? "" : SLASH_STRING, | |
3001 | path, (char *) NULL); | |
3002 | } | |
3003 | ||
5b03f266 AC |
3004 | ULONGEST |
3005 | align_up (ULONGEST v, int n) | |
3006 | { | |
3007 | /* Check that N is really a power of two. */ | |
3008 | gdb_assert (n && (n & (n-1)) == 0); | |
3009 | return (v + n - 1) & -n; | |
3010 | } | |
3011 | ||
3012 | ULONGEST | |
3013 | align_down (ULONGEST v, int n) | |
3014 | { | |
3015 | /* Check that N is really a power of two. */ | |
3016 | gdb_assert (n && (n & (n-1)) == 0); | |
3017 | return (v & -n); | |
3018 | } | |
ae5a43e0 | 3019 | |
5bd1ef56 TT |
3020 | /* See utils.h. */ |
3021 | ||
3022 | LONGEST | |
3023 | gdb_sign_extend (LONGEST value, int bit) | |
3024 | { | |
3025 | gdb_assert (bit >= 1 && bit <= 8 * sizeof (LONGEST)); | |
3026 | ||
3027 | if (((value >> (bit - 1)) & 1) != 0) | |
3028 | { | |
3029 | LONGEST signbit = ((LONGEST) 1) << (bit - 1); | |
3030 | ||
3031 | value = (value ^ signbit) - signbit; | |
3032 | } | |
3033 | ||
3034 | return value; | |
3035 | } | |
3036 | ||
ae5a43e0 DJ |
3037 | /* Allocation function for the libiberty hash table which uses an |
3038 | obstack. The obstack is passed as DATA. */ | |
3039 | ||
3040 | void * | |
3041 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
3042 | { | |
241fd515 | 3043 | size_t total = size * count; |
ae5a43e0 | 3044 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 3045 | |
ae5a43e0 DJ |
3046 | memset (ptr, 0, total); |
3047 | return ptr; | |
3048 | } | |
3049 | ||
3050 | /* Trivial deallocation function for the libiberty splay tree and hash | |
3051 | table - don't deallocate anything. Rely on later deletion of the | |
3052 | obstack. DATA will be the obstack, although it is not needed | |
3053 | here. */ | |
3054 | ||
3055 | void | |
3056 | dummy_obstack_deallocate (void *object, void *data) | |
3057 | { | |
3058 | return; | |
3059 | } | |
253c8abb DJ |
3060 | |
3061 | /* The bit offset of the highest byte in a ULONGEST, for overflow | |
3062 | checking. */ | |
3063 | ||
3064 | #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT) | |
3065 | ||
3066 | /* True (non-zero) iff DIGIT is a valid digit in radix BASE, | |
3067 | where 2 <= BASE <= 36. */ | |
3068 | ||
3069 | static int | |
3070 | is_digit_in_base (unsigned char digit, int base) | |
3071 | { | |
3072 | if (!isalnum (digit)) | |
3073 | return 0; | |
3074 | if (base <= 10) | |
3075 | return (isdigit (digit) && digit < base + '0'); | |
3076 | else | |
3077 | return (isdigit (digit) || tolower (digit) < base - 10 + 'a'); | |
3078 | } | |
3079 | ||
3080 | static int | |
3081 | digit_to_int (unsigned char c) | |
3082 | { | |
3083 | if (isdigit (c)) | |
3084 | return c - '0'; | |
3085 | else | |
3086 | return tolower (c) - 'a' + 10; | |
3087 | } | |
3088 | ||
3089 | /* As for strtoul, but for ULONGEST results. */ | |
3090 | ||
3091 | ULONGEST | |
3092 | strtoulst (const char *num, const char **trailer, int base) | |
3093 | { | |
3094 | unsigned int high_part; | |
3095 | ULONGEST result; | |
3096 | int minus = 0; | |
3097 | int i = 0; | |
3098 | ||
3099 | /* Skip leading whitespace. */ | |
3100 | while (isspace (num[i])) | |
3101 | i++; | |
3102 | ||
3103 | /* Handle prefixes. */ | |
3104 | if (num[i] == '+') | |
3105 | i++; | |
3106 | else if (num[i] == '-') | |
3107 | { | |
3108 | minus = 1; | |
3109 | i++; | |
3110 | } | |
3111 | ||
3112 | if (base == 0 || base == 16) | |
3113 | { | |
3114 | if (num[i] == '0' && (num[i + 1] == 'x' || num[i + 1] == 'X')) | |
3115 | { | |
3116 | i += 2; | |
3117 | if (base == 0) | |
3118 | base = 16; | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | if (base == 0 && num[i] == '0') | |
3123 | base = 8; | |
3124 | ||
3125 | if (base == 0) | |
3126 | base = 10; | |
3127 | ||
3128 | if (base < 2 || base > 36) | |
3129 | { | |
3130 | errno = EINVAL; | |
3131 | return 0; | |
3132 | } | |
3133 | ||
3134 | result = high_part = 0; | |
3135 | for (; is_digit_in_base (num[i], base); i += 1) | |
3136 | { | |
3137 | result = result * base + digit_to_int (num[i]); | |
3138 | high_part = high_part * base + (unsigned int) (result >> HIGH_BYTE_POSN); | |
3139 | result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1; | |
3140 | if (high_part > 0xff) | |
3141 | { | |
3142 | errno = ERANGE; | |
3143 | result = ~ (ULONGEST) 0; | |
3144 | high_part = 0; | |
3145 | minus = 0; | |
3146 | break; | |
3147 | } | |
3148 | } | |
3149 | ||
3150 | if (trailer != NULL) | |
3151 | *trailer = &num[i]; | |
3152 | ||
3153 | result = result + ((ULONGEST) high_part << HIGH_BYTE_POSN); | |
3154 | if (minus) | |
3155 | return -result; | |
3156 | else | |
3157 | return result; | |
3158 | } | |
e1024ff1 DJ |
3159 | |
3160 | /* Simple, portable version of dirname that does not modify its | |
3161 | argument. */ | |
3162 | ||
3163 | char * | |
3164 | ldirname (const char *filename) | |
3165 | { | |
3166 | const char *base = lbasename (filename); | |
3167 | char *dirname; | |
3168 | ||
3169 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
3170 | --base; | |
3171 | ||
3172 | if (base == filename) | |
3173 | return NULL; | |
3174 | ||
3175 | dirname = xmalloc (base - filename + 2); | |
3176 | memcpy (dirname, filename, base - filename); | |
3177 | ||
3178 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
3179 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
3180 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
3181 | && !IS_DIR_SEPARATOR (filename[0])) | |
3182 | dirname[base++ - filename] = '.'; | |
3183 | ||
3184 | dirname[base - filename] = '\0'; | |
3185 | return dirname; | |
3186 | } | |
d1a41061 PP |
3187 | |
3188 | /* Call libiberty's buildargv, and return the result. | |
3189 | If buildargv fails due to out-of-memory, call nomem. | |
3190 | Therefore, the returned value is guaranteed to be non-NULL, | |
3191 | unless the parameter itself is NULL. */ | |
3192 | ||
3193 | char ** | |
3194 | gdb_buildargv (const char *s) | |
3195 | { | |
3196 | char **argv = buildargv (s); | |
e0627e85 | 3197 | |
d1a41061 | 3198 | if (s != NULL && argv == NULL) |
d26e3629 | 3199 | malloc_failure (0); |
d1a41061 PP |
3200 | return argv; |
3201 | } | |
3c16cced | 3202 | |
dc146f7c VP |
3203 | int |
3204 | compare_positive_ints (const void *ap, const void *bp) | |
3205 | { | |
3206 | /* Because we know we're comparing two ints which are positive, | |
3207 | there's no danger of overflow here. */ | |
3208 | return * (int *) ap - * (int *) bp; | |
3209 | } | |
3210 | ||
f8eba3c6 TT |
3211 | /* String compare function for qsort. */ |
3212 | ||
3213 | int | |
3214 | compare_strings (const void *arg1, const void *arg2) | |
3215 | { | |
3216 | const char **s1 = (const char **) arg1; | |
3217 | const char **s2 = (const char **) arg2; | |
3218 | ||
3219 | return strcmp (*s1, *s2); | |
3220 | } | |
3221 | ||
d18b8b7a | 3222 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
3223 | #define AMBIGUOUS_MESS2 \ |
3224 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
3225 | |
3226 | const char * | |
3227 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
3228 | { | |
3229 | char *ret, *retp; | |
3230 | int ret_len; | |
3231 | char **p; | |
3232 | ||
3233 | /* Check if errmsg just need simple return. */ | |
3234 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
3235 | return bfd_errmsg (error_tag); | |
3236 | ||
3237 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
3238 | + strlen (AMBIGUOUS_MESS2); | |
3239 | for (p = matching; *p; p++) | |
3240 | ret_len += strlen (*p) + 1; | |
3241 | ret = xmalloc (ret_len + 1); | |
3242 | retp = ret; | |
3243 | make_cleanup (xfree, ret); | |
3244 | ||
3245 | strcpy (retp, bfd_errmsg (error_tag)); | |
3246 | retp += strlen (retp); | |
3247 | ||
3248 | strcpy (retp, AMBIGUOUS_MESS1); | |
3249 | retp += strlen (retp); | |
3250 | ||
3251 | for (p = matching; *p; p++) | |
3252 | { | |
3253 | sprintf (retp, " %s", *p); | |
3254 | retp += strlen (retp); | |
3255 | } | |
3256 | xfree (matching); | |
3257 | ||
3258 | strcpy (retp, AMBIGUOUS_MESS2); | |
3259 | ||
3260 | return ret; | |
3261 | } | |
3262 | ||
74164c56 JK |
3263 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
3264 | ||
3265 | int | |
c0939df1 | 3266 | parse_pid_to_attach (const char *args) |
74164c56 JK |
3267 | { |
3268 | unsigned long pid; | |
3269 | char *dummy; | |
3270 | ||
3271 | if (!args) | |
3272 | error_no_arg (_("process-id to attach")); | |
3273 | ||
c0939df1 | 3274 | dummy = (char *) args; |
74164c56 JK |
3275 | pid = strtoul (args, &dummy, 0); |
3276 | /* Some targets don't set errno on errors, grrr! */ | |
3277 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
3278 | error (_("Illegal process-id: %s."), args); | |
3279 | ||
3280 | return pid; | |
3281 | } | |
3282 | ||
353d1d73 JK |
3283 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
3284 | ||
3285 | static void | |
3286 | do_bpstat_clear_actions_cleanup (void *unused) | |
3287 | { | |
3288 | bpstat_clear_actions (); | |
3289 | } | |
3290 | ||
3291 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
3292 | discard_cleanups if no exception is caught. */ | |
3293 | ||
3294 | struct cleanup * | |
3295 | make_bpstat_clear_actions_cleanup (void) | |
3296 | { | |
3297 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
3298 | } | |
3299 | ||
df15bd07 JK |
3300 | /* Check for GCC >= 4.x according to the symtab->producer string. Return minor |
3301 | version (x) of 4.x in such case. If it is not GCC or it is GCC older than | |
3302 | 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */ | |
3303 | ||
3304 | int | |
3305 | producer_is_gcc_ge_4 (const char *producer) | |
3306 | { | |
3307 | const char *cs; | |
3308 | int major, minor; | |
3309 | ||
3310 | if (producer == NULL) | |
3311 | { | |
3312 | /* For unknown compilers expect their behavior is not compliant. For GCC | |
3313 | this case can also happen for -gdwarf-4 type units supported since | |
3314 | gcc-4.5. */ | |
3315 | ||
3316 | return -1; | |
3317 | } | |
3318 | ||
3319 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
3320 | ||
3321 | if (strncmp (producer, "GNU ", strlen ("GNU ")) != 0) | |
3322 | { | |
3323 | /* For non-GCC compilers expect their behavior is not compliant. */ | |
3324 | ||
3325 | return -1; | |
3326 | } | |
3327 | cs = &producer[strlen ("GNU ")]; | |
3328 | while (*cs && !isdigit (*cs)) | |
3329 | cs++; | |
3330 | if (sscanf (cs, "%d.%d", &major, &minor) != 2) | |
3331 | { | |
3332 | /* Not recognized as GCC. */ | |
3333 | ||
3334 | return -1; | |
3335 | } | |
3336 | ||
3337 | if (major < 4) | |
3338 | return -1; | |
3339 | if (major > 4) | |
3340 | return INT_MAX; | |
3341 | return minor; | |
3342 | } | |
3343 | ||
e4ab2fad JK |
3344 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
3345 | ||
3346 | static void | |
3347 | do_free_char_ptr_vec (void *arg) | |
3348 | { | |
3349 | VEC (char_ptr) *char_ptr_vec = arg; | |
3350 | ||
3351 | free_char_ptr_vec (char_ptr_vec); | |
3352 | } | |
3353 | ||
3354 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
3355 | final VEC_free for CHAR_PTR_VEC itself. | |
3356 | ||
3357 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
3358 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
3359 | this function does not (cannot) clear the pointer. */ | |
3360 | ||
3361 | struct cleanup * | |
3362 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
3363 | { | |
3364 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
3365 | } | |
3366 | ||
6dea1fbd JK |
3367 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3368 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3369 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3370 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3371 | |
3372 | void | |
3373 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3374 | { | |
3375 | char *string = *stringp, *s; | |
3376 | const size_t from_len = strlen (from); | |
3377 | const size_t to_len = strlen (to); | |
3378 | ||
3379 | for (s = string;;) | |
3380 | { | |
3381 | s = strstr (s, from); | |
3382 | if (s == NULL) | |
3383 | break; | |
3384 | ||
1564a261 JK |
3385 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3386 | || s[-1] == DIRNAME_SEPARATOR) | |
3387 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3388 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3389 | { |
3390 | char *string_new; | |
3391 | ||
3392 | string_new = xrealloc (string, (strlen (string) + to_len + 1)); | |
3393 | ||
3394 | /* Relocate the current S pointer. */ | |
3395 | s = s - string + string_new; | |
3396 | string = string_new; | |
3397 | ||
3398 | /* Replace from by to. */ | |
3399 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3400 | memcpy (s, to, to_len); | |
3401 | ||
3402 | s += to_len; | |
3403 | } | |
3404 | else | |
3405 | s++; | |
3406 | } | |
3407 | ||
3408 | *stringp = string; | |
3409 | } | |
3410 | ||
0b6cb71e DE |
3411 | #ifdef HAVE_WAITPID |
3412 | ||
3413 | #ifdef SIGALRM | |
3414 | ||
3415 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3416 | ||
3417 | static void | |
3418 | sigalrm_handler (int signo) | |
3419 | { | |
3420 | /* Nothing to do. */ | |
3421 | } | |
3422 | ||
3423 | #endif | |
3424 | ||
3425 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3426 | TIMEOUT is the time to stop waiting in seconds. | |
3427 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3428 | Returns PID if it was successfully waited for, otherwise -1. | |
3429 | ||
3430 | Timeouts are currently implemented with alarm and SIGALRM. | |
3431 | If the host does not support them, this waits "forever". | |
3432 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3433 | ||
3434 | pid_t | |
3435 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3436 | { | |
3437 | pid_t waitpid_result; | |
3438 | ||
3439 | gdb_assert (pid > 0); | |
3440 | gdb_assert (timeout >= 0); | |
3441 | ||
3442 | if (timeout > 0) | |
3443 | { | |
3444 | #ifdef SIGALRM | |
3445 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3446 | struct sigaction sa, old_sa; | |
3447 | ||
3448 | sa.sa_handler = sigalrm_handler; | |
3449 | sigemptyset (&sa.sa_mask); | |
3450 | sa.sa_flags = 0; | |
3451 | sigaction (SIGALRM, &sa, &old_sa); | |
3452 | #else | |
3453 | void (*ofunc) (); | |
3454 | ||
3455 | ofunc = (void (*)()) signal (SIGALRM, sigalrm_handler); | |
3456 | #endif | |
3457 | ||
3458 | alarm (timeout); | |
3459 | #endif | |
3460 | ||
3461 | waitpid_result = waitpid (pid, status, 0); | |
3462 | ||
3463 | #ifdef SIGALRM | |
3464 | alarm (0); | |
3465 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3466 | sigaction (SIGALRM, &old_sa, NULL); | |
3467 | #else | |
3468 | signal (SIGALRM, ofunc); | |
3469 | #endif | |
3470 | #endif | |
3471 | } | |
3472 | else | |
3473 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3474 | ||
3475 | if (waitpid_result == pid) | |
3476 | return pid; | |
3477 | else | |
3478 | return -1; | |
3479 | } | |
3480 | ||
3481 | #endif /* HAVE_WAITPID */ | |
3482 | ||
202cbf1c JK |
3483 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3484 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3485 | ||
3486 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3487 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3488 | ||
3489 | int | |
3490 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3491 | { | |
3492 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3493 | ||
3494 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3495 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3496 | ||
3497 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3498 | { | |
3499 | char *pattern_slash, *string_slash; | |
3500 | ||
3501 | /* Replace '\' by '/' in both strings. */ | |
3502 | ||
3503 | pattern_slash = alloca (strlen (pattern) + 1); | |
3504 | strcpy (pattern_slash, pattern); | |
3505 | pattern = pattern_slash; | |
3506 | for (; *pattern_slash != 0; pattern_slash++) | |
3507 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3508 | *pattern_slash = '/'; | |
3509 | ||
3510 | string_slash = alloca (strlen (string) + 1); | |
3511 | strcpy (string_slash, string); | |
3512 | string = string_slash; | |
3513 | for (; *string_slash != 0; string_slash++) | |
3514 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3515 | *string_slash = '/'; | |
3516 | } | |
3517 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3518 | ||
3519 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3520 | flags |= FNM_CASEFOLD; | |
3521 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3522 | ||
3523 | return fnmatch (pattern, string, flags); | |
3524 | } | |
3525 | ||
2c0b251b PA |
3526 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3527 | extern initialize_file_ftype _initialize_utils; | |
3528 | ||
3c16cced PA |
3529 | void |
3530 | _initialize_utils (void) | |
3531 | { | |
3532 | add_internal_problem_command (&internal_error_problem); | |
3533 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3534 | add_internal_problem_command (&demangler_warning_problem); |
3c16cced | 3535 | } |