Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
4e8f7a8b | 20 | #include "defs.h" |
4e8f7a8b | 21 | #include <ctype.h> |
0b6cb71e | 22 | #include "gdb_wait.h" |
4e8f7a8b | 23 | #include "event-top.h" |
95e54da7 | 24 | #include "gdbthread.h" |
202cbf1c | 25 | #include "fnmatch.h" |
cbb099e8 | 26 | #include "gdb_bfd.h" |
7991dee7 JK |
27 | #ifdef HAVE_SYS_RESOURCE_H |
28 | #include <sys/resource.h> | |
29 | #endif /* HAVE_SYS_RESOURCE_H */ | |
4e8f7a8b | 30 | |
6a83354a AC |
31 | #ifdef TUI |
32 | #include "tui/tui.h" /* For tui_get_command_dimension. */ | |
33 | #endif | |
34 | ||
9d271fd8 AC |
35 | #ifdef __GO32__ |
36 | #include <pc.h> | |
37 | #endif | |
38 | ||
042be3a9 | 39 | #include <signal.h> |
c906108c SS |
40 | #include "gdbcmd.h" |
41 | #include "serial.h" | |
42 | #include "bfd.h" | |
43 | #include "target.h" | |
50f182aa | 44 | #include "gdb-demangle.h" |
c906108c SS |
45 | #include "expression.h" |
46 | #include "language.h" | |
234b45d4 | 47 | #include "charset.h" |
c906108c | 48 | #include "annotate.h" |
303c8ebd | 49 | #include "filenames.h" |
7b90c3f9 | 50 | #include "symfile.h" |
ae5a43e0 | 51 | #include "gdb_obstack.h" |
9544c605 | 52 | #include "gdbcore.h" |
698ba934 | 53 | #include "top.h" |
7c953934 | 54 | #include "main.h" |
cb08cc53 | 55 | #include "solist.h" |
c906108c | 56 | |
8731e58e | 57 | #include "inferior.h" /* for signed_pointer_to_address */ |
ac2e2ef7 | 58 | |
3b78cdbb | 59 | #include "gdb_curses.h" |
020cc13c | 60 | |
dbda9972 | 61 | #include "readline/readline.h" |
c906108c | 62 | |
dcb07cfa | 63 | #include <chrono> |
75feb17d | 64 | |
8626589c | 65 | #include "gdb_usleep.h" |
390a8aca | 66 | #include "interps.h" |
db1ff28b | 67 | #include "gdb_regex.h" |
8626589c | 68 | |
a3828db0 | 69 | #if !HAVE_DECL_MALLOC |
5ac79d78 | 70 | extern PTR malloc (); /* ARI: PTR */ |
3c37485b | 71 | #endif |
a3828db0 | 72 | #if !HAVE_DECL_REALLOC |
5ac79d78 | 73 | extern PTR realloc (); /* ARI: PTR */ |
0e52036f | 74 | #endif |
a3828db0 | 75 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
76 | extern void free (); |
77 | #endif | |
81b8eb80 | 78 | |
9a4105ab | 79 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
80 | |
81 | /* Prototypes for local functions */ | |
82 | ||
d9fcf2fb | 83 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 84 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 85 | |
d9fcf2fb | 86 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void prompt_for_continue (void); |
c906108c | 89 | |
eb0d3137 | 90 | static void set_screen_size (void); |
a14ed312 | 91 | static void set_width (void); |
c906108c | 92 | |
260c0b2a DE |
93 | /* Time spent in prompt_for_continue in the currently executing command |
94 | waiting for user to respond. | |
95 | Initialized in make_command_stats_cleanup. | |
96 | Modified in prompt_for_continue and defaulted_query. | |
97 | Used in report_command_stats. */ | |
98 | ||
dcb07cfa | 99 | static std::chrono::steady_clock::duration prompt_for_continue_wait_time; |
260c0b2a | 100 | |
75feb17d DJ |
101 | /* A flag indicating whether to timestamp debugging messages. */ |
102 | ||
103 | static int debug_timestamp = 0; | |
104 | ||
581e13c1 | 105 | /* Nonzero if we have job control. */ |
c906108c SS |
106 | |
107 | int job_control; | |
108 | ||
c906108c SS |
109 | /* Nonzero means that strings with character values >0x7F should be printed |
110 | as octal escapes. Zero means just print the value (e.g. it's an | |
111 | international character, and the terminal or window can cope.) */ | |
112 | ||
113 | int sevenbit_strings = 0; | |
920d2a44 AC |
114 | static void |
115 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
116 | struct cmd_list_element *c, const char *value) | |
117 | { | |
3e43a32a MS |
118 | fprintf_filtered (file, _("Printing of 8-bit characters " |
119 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
120 | value); |
121 | } | |
c906108c | 122 | |
c906108c SS |
123 | /* String to be printed before warning messages, if any. */ |
124 | ||
125 | char *warning_pre_print = "\nwarning: "; | |
126 | ||
127 | int pagination_enabled = 1; | |
920d2a44 AC |
128 | static void |
129 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
130 | struct cmd_list_element *c, const char *value) | |
131 | { | |
132 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
133 | } | |
134 | ||
c906108c | 135 | \f |
c27f5738 | 136 | /* Cleanup utilities. |
c5aa993b | 137 | |
c27f5738 DE |
138 | These are not defined in cleanups.c (nor declared in cleanups.h) |
139 | because while they use the "cleanup API" they are not part of the | |
140 | "cleanup API". */ | |
7a292a7a | 141 | |
7a292a7a | 142 | static void |
fba45db2 | 143 | do_freeargv (void *arg) |
7a292a7a | 144 | { |
c5aa993b | 145 | freeargv ((char **) arg); |
7a292a7a SS |
146 | } |
147 | ||
148 | struct cleanup * | |
fba45db2 | 149 | make_cleanup_freeargv (char **arg) |
7a292a7a | 150 | { |
e0088cfd | 151 | return make_cleanup (do_freeargv, arg); |
7a292a7a SS |
152 | } |
153 | ||
5c65bbb6 AC |
154 | static void |
155 | do_bfd_close_cleanup (void *arg) | |
156 | { | |
19ba03f4 | 157 | gdb_bfd_unref ((bfd *) arg); |
5c65bbb6 AC |
158 | } |
159 | ||
160 | struct cleanup * | |
f9a062ff | 161 | make_cleanup_bfd_unref (bfd *abfd) |
5c65bbb6 AC |
162 | { |
163 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
164 | } | |
165 | ||
7c8a8b04 TT |
166 | /* Helper function which does the work for make_cleanup_fclose. */ |
167 | ||
168 | static void | |
169 | do_fclose_cleanup (void *arg) | |
170 | { | |
19ba03f4 | 171 | FILE *file = (FILE *) arg; |
e0627e85 | 172 | |
c02866a0 | 173 | fclose (file); |
7c8a8b04 TT |
174 | } |
175 | ||
176 | /* Return a new cleanup that closes FILE. */ | |
177 | ||
178 | struct cleanup * | |
179 | make_cleanup_fclose (FILE *file) | |
180 | { | |
181 | return make_cleanup (do_fclose_cleanup, file); | |
182 | } | |
183 | ||
16ad9370 TT |
184 | /* Helper function which does the work for make_cleanup_obstack_free. */ |
185 | ||
186 | static void | |
187 | do_obstack_free (void *arg) | |
188 | { | |
19ba03f4 | 189 | struct obstack *ob = (struct obstack *) arg; |
e0627e85 | 190 | |
16ad9370 TT |
191 | obstack_free (ob, NULL); |
192 | } | |
193 | ||
194 | /* Return a new cleanup that frees OBSTACK. */ | |
195 | ||
196 | struct cleanup * | |
197 | make_cleanup_obstack_free (struct obstack *obstack) | |
198 | { | |
199 | return make_cleanup (do_obstack_free, obstack); | |
200 | } | |
201 | ||
11cf8741 | 202 | static void |
d9fcf2fb | 203 | do_ui_file_delete (void *arg) |
11cf8741 | 204 | { |
19ba03f4 | 205 | ui_file_delete ((struct ui_file *) arg); |
11cf8741 JM |
206 | } |
207 | ||
208 | struct cleanup * | |
d9fcf2fb | 209 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 210 | { |
e0088cfd | 211 | return make_cleanup (do_ui_file_delete, arg); |
11cf8741 JM |
212 | } |
213 | ||
8d4d924b JK |
214 | /* Helper function for make_cleanup_ui_out_redirect_pop. */ |
215 | ||
216 | static void | |
217 | do_ui_out_redirect_pop (void *arg) | |
218 | { | |
19ba03f4 | 219 | struct ui_out *uiout = (struct ui_out *) arg; |
8d4d924b JK |
220 | |
221 | if (ui_out_redirect (uiout, NULL) < 0) | |
222 | warning (_("Cannot restore redirection of the current output protocol")); | |
223 | } | |
224 | ||
225 | /* Return a new cleanup that pops the last redirection by ui_out_redirect | |
226 | with NULL parameter. */ | |
227 | ||
228 | struct cleanup * | |
229 | make_cleanup_ui_out_redirect_pop (struct ui_out *uiout) | |
230 | { | |
e0088cfd | 231 | return make_cleanup (do_ui_out_redirect_pop, uiout); |
8d4d924b JK |
232 | } |
233 | ||
7b90c3f9 JB |
234 | static void |
235 | do_free_section_addr_info (void *arg) | |
236 | { | |
19ba03f4 | 237 | free_section_addr_info ((struct section_addr_info *) arg); |
7b90c3f9 JB |
238 | } |
239 | ||
240 | struct cleanup * | |
241 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
242 | { | |
e0088cfd | 243 | return make_cleanup (do_free_section_addr_info, addrs); |
7b90c3f9 JB |
244 | } |
245 | ||
0b080f59 VP |
246 | struct restore_integer_closure |
247 | { | |
248 | int *variable; | |
249 | int value; | |
250 | }; | |
251 | ||
252 | static void | |
253 | restore_integer (void *p) | |
254 | { | |
19ba03f4 SM |
255 | struct restore_integer_closure *closure |
256 | = (struct restore_integer_closure *) p; | |
e0627e85 | 257 | |
0b080f59 VP |
258 | *(closure->variable) = closure->value; |
259 | } | |
7b90c3f9 | 260 | |
3e43a32a MS |
261 | /* Remember the current value of *VARIABLE and make it restored when |
262 | the cleanup is run. */ | |
5da1313b | 263 | |
c906108c | 264 | struct cleanup * |
0b080f59 VP |
265 | make_cleanup_restore_integer (int *variable) |
266 | { | |
8d749320 | 267 | struct restore_integer_closure *c = XNEW (struct restore_integer_closure); |
e0627e85 | 268 | |
0b080f59 VP |
269 | c->variable = variable; |
270 | c->value = *variable; | |
271 | ||
e0088cfd | 272 | return make_cleanup_dtor (restore_integer, (void *) c, xfree); |
0b080f59 VP |
273 | } |
274 | ||
3e43a32a MS |
275 | /* Remember the current value of *VARIABLE and make it restored when |
276 | the cleanup is run. */ | |
5da1313b JK |
277 | |
278 | struct cleanup * | |
279 | make_cleanup_restore_uinteger (unsigned int *variable) | |
280 | { | |
281 | return make_cleanup_restore_integer ((int *) variable); | |
282 | } | |
283 | ||
c0edd9ed JK |
284 | /* Helper for make_cleanup_unpush_target. */ |
285 | ||
286 | static void | |
287 | do_unpush_target (void *arg) | |
288 | { | |
19ba03f4 | 289 | struct target_ops *ops = (struct target_ops *) arg; |
c0edd9ed JK |
290 | |
291 | unpush_target (ops); | |
292 | } | |
293 | ||
294 | /* Return a new cleanup that unpushes OPS. */ | |
295 | ||
296 | struct cleanup * | |
297 | make_cleanup_unpush_target (struct target_ops *ops) | |
298 | { | |
e0088cfd | 299 | return make_cleanup (do_unpush_target, ops); |
c0edd9ed JK |
300 | } |
301 | ||
8e3b41a9 JK |
302 | /* Helper for make_cleanup_htab_delete compile time checking the types. */ |
303 | ||
304 | static void | |
305 | do_htab_delete_cleanup (void *htab_voidp) | |
306 | { | |
19ba03f4 | 307 | htab_t htab = (htab_t) htab_voidp; |
8e3b41a9 JK |
308 | |
309 | htab_delete (htab); | |
310 | } | |
311 | ||
312 | /* Return a new cleanup that deletes HTAB. */ | |
313 | ||
314 | struct cleanup * | |
315 | make_cleanup_htab_delete (htab_t htab) | |
316 | { | |
317 | return make_cleanup (do_htab_delete_cleanup, htab); | |
318 | } | |
319 | ||
028d0ed5 TJB |
320 | /* Helper for make_cleanup_value_free_to_mark. */ |
321 | ||
322 | static void | |
323 | do_value_free_to_mark (void *value) | |
324 | { | |
325 | value_free_to_mark ((struct value *) value); | |
326 | } | |
327 | ||
328 | /* Free all values allocated since MARK was obtained by value_mark | |
329 | (except for those released) when the cleanup is run. */ | |
330 | ||
331 | struct cleanup * | |
332 | make_cleanup_value_free_to_mark (struct value *mark) | |
333 | { | |
e0088cfd | 334 | return make_cleanup (do_value_free_to_mark, mark); |
028d0ed5 TJB |
335 | } |
336 | ||
72fc29ff TT |
337 | /* Helper for make_cleanup_value_free. */ |
338 | ||
339 | static void | |
340 | do_value_free (void *value) | |
341 | { | |
19ba03f4 | 342 | value_free ((struct value *) value); |
72fc29ff TT |
343 | } |
344 | ||
345 | /* Free VALUE. */ | |
346 | ||
347 | struct cleanup * | |
348 | make_cleanup_value_free (struct value *value) | |
349 | { | |
e0088cfd | 350 | return make_cleanup (do_value_free, value); |
72fc29ff TT |
351 | } |
352 | ||
cb08cc53 JK |
353 | /* Helper for make_cleanup_free_so. */ |
354 | ||
355 | static void | |
356 | do_free_so (void *arg) | |
357 | { | |
19ba03f4 | 358 | struct so_list *so = (struct so_list *) arg; |
cb08cc53 JK |
359 | |
360 | free_so (so); | |
361 | } | |
362 | ||
363 | /* Make cleanup handler calling free_so for SO. */ | |
364 | ||
365 | struct cleanup * | |
366 | make_cleanup_free_so (struct so_list *so) | |
367 | { | |
e0088cfd | 368 | return make_cleanup (do_free_so, so); |
cb08cc53 JK |
369 | } |
370 | ||
5b12a61c JK |
371 | /* Helper for make_cleanup_restore_current_language. */ |
372 | ||
373 | static void | |
374 | do_restore_current_language (void *p) | |
375 | { | |
aead7601 | 376 | enum language saved_lang = (enum language) (uintptr_t) p; |
5b12a61c JK |
377 | |
378 | set_language (saved_lang); | |
379 | } | |
380 | ||
381 | /* Remember the current value of CURRENT_LANGUAGE and make it restored when | |
382 | the cleanup is run. */ | |
383 | ||
384 | struct cleanup * | |
385 | make_cleanup_restore_current_language (void) | |
386 | { | |
387 | enum language saved_lang = current_language->la_language; | |
388 | ||
389 | return make_cleanup (do_restore_current_language, | |
390 | (void *) (uintptr_t) saved_lang); | |
391 | } | |
392 | ||
410a0ff2 SDJ |
393 | /* Helper function for make_cleanup_clear_parser_state. */ |
394 | ||
395 | static void | |
396 | do_clear_parser_state (void *ptr) | |
397 | { | |
398 | struct parser_state **p = (struct parser_state **) ptr; | |
399 | ||
400 | *p = NULL; | |
401 | } | |
402 | ||
403 | /* Clean (i.e., set to NULL) the parser state variable P. */ | |
404 | ||
405 | struct cleanup * | |
406 | make_cleanup_clear_parser_state (struct parser_state **p) | |
407 | { | |
408 | return make_cleanup (do_clear_parser_state, (void *) p); | |
409 | } | |
410 | ||
c906108c SS |
411 | /* This function is useful for cleanups. |
412 | Do | |
413 | ||
c5aa993b JM |
414 | foo = xmalloc (...); |
415 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
416 | |
417 | to arrange to free the object thus allocated. */ | |
418 | ||
419 | void | |
2f9429ae | 420 | free_current_contents (void *ptr) |
c906108c | 421 | { |
19ba03f4 | 422 | void **location = (void **) ptr; |
e0627e85 | 423 | |
e2f9c474 | 424 | if (location == NULL) |
8e65ff28 | 425 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 426 | _("free_current_contents: NULL pointer")); |
2f9429ae | 427 | if (*location != NULL) |
e2f9c474 | 428 | { |
b8c9b27d | 429 | xfree (*location); |
e2f9c474 AC |
430 | *location = NULL; |
431 | } | |
c906108c | 432 | } |
c906108c | 433 | \f |
c5aa993b | 434 | |
8731e58e | 435 | |
f5a96129 AC |
436 | /* Print a warning message. The first argument STRING is the warning |
437 | message, used as an fprintf format string, the second is the | |
438 | va_list of arguments for that string. A warning is unfiltered (not | |
439 | paginated) so that the user does not need to page through each | |
440 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
441 | |
442 | void | |
f5a96129 | 443 | vwarning (const char *string, va_list args) |
c906108c | 444 | { |
9a4105ab AC |
445 | if (deprecated_warning_hook) |
446 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
447 | else |
448 | { | |
c5ac1540 PA |
449 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
450 | ||
0d2f5c07 | 451 | if (target_supports_terminal_ours ()) |
c5ac1540 PA |
452 | { |
453 | make_cleanup_restore_target_terminal (); | |
454 | target_terminal_ours_for_output (); | |
455 | } | |
0d2f5c07 GB |
456 | if (filtered_printing_initialized ()) |
457 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
458 | gdb_flush (gdb_stdout); |
459 | if (warning_pre_print) | |
306d9ac5 | 460 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
461 | vfprintf_unfiltered (gdb_stderr, string, args); |
462 | fprintf_unfiltered (gdb_stderr, "\n"); | |
c5ac1540 PA |
463 | |
464 | do_cleanups (old_chain); | |
f5a96129 | 465 | } |
c906108c SS |
466 | } |
467 | ||
c906108c SS |
468 | /* Print an error message and return to command level. |
469 | The first argument STRING is the error message, used as a fprintf string, | |
470 | and the remaining args are passed as arguments to it. */ | |
471 | ||
c25c4a8b | 472 | void |
4ce44c66 JM |
473 | verror (const char *string, va_list args) |
474 | { | |
6b1b7650 | 475 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
476 | } |
477 | ||
c25c4a8b | 478 | void |
d75e3c94 | 479 | error_stream (struct ui_file *stream) |
2acceee2 | 480 | { |
d16c5475 | 481 | std::string message = ui_file_as_string (stream); |
e0627e85 | 482 | |
d16c5475 | 483 | error (("%s"), message.c_str ()); |
2acceee2 | 484 | } |
c906108c | 485 | |
2437fd32 GB |
486 | /* Emit a message and abort. */ |
487 | ||
488 | static void ATTRIBUTE_NORETURN | |
489 | abort_with_message (const char *msg) | |
490 | { | |
491 | if (gdb_stderr == NULL) | |
492 | fputs (msg, stderr); | |
493 | else | |
494 | fputs_unfiltered (msg, gdb_stderr); | |
495 | ||
496 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
497 | } | |
498 | ||
7991dee7 JK |
499 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
500 | ||
eae7090b | 501 | void |
7991dee7 JK |
502 | dump_core (void) |
503 | { | |
504 | #ifdef HAVE_SETRLIMIT | |
505 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
506 | ||
507 | setrlimit (RLIMIT_CORE, &rlim); | |
508 | #endif /* HAVE_SETRLIMIT */ | |
509 | ||
510 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
511 | } | |
512 | ||
3e43a32a | 513 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
514 | function. Returns zero if GDB cannot or should not dump core. |
515 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
516 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 517 | |
eae7090b GB |
518 | int |
519 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
520 | { |
521 | #ifdef HAVE_GETRLIMIT | |
522 | struct rlimit rlim; | |
523 | ||
524 | /* Be quiet and assume we can dump if an error is returned. */ | |
525 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
526 | return 1; | |
527 | ||
eae7090b | 528 | switch (limit_kind) |
7991dee7 | 529 | { |
eae7090b GB |
530 | case LIMIT_CUR: |
531 | if (rlim.rlim_cur == 0) | |
532 | return 0; | |
533 | ||
534 | case LIMIT_MAX: | |
535 | if (rlim.rlim_max == 0) | |
536 | return 0; | |
7991dee7 JK |
537 | } |
538 | #endif /* HAVE_GETRLIMIT */ | |
539 | ||
540 | return 1; | |
541 | } | |
542 | ||
eae7090b GB |
543 | /* Print a warning that we cannot dump core. */ |
544 | ||
545 | void | |
546 | warn_cant_dump_core (const char *reason) | |
547 | { | |
548 | fprintf_unfiltered (gdb_stderr, | |
549 | _("%s\nUnable to dump core, use `ulimit -c" | |
550 | " unlimited' before executing GDB next time.\n"), | |
551 | reason); | |
552 | } | |
553 | ||
554 | /* Check whether GDB will be able to dump core using the dump_core | |
555 | function, and print a warning if we cannot. */ | |
556 | ||
557 | static int | |
558 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
559 | const char *reason) | |
560 | { | |
561 | int core_dump_allowed = can_dump_core (limit_kind); | |
562 | ||
563 | if (!core_dump_allowed) | |
564 | warn_cant_dump_core (reason); | |
565 | ||
566 | return core_dump_allowed; | |
567 | } | |
568 | ||
3c16cced PA |
569 | /* Allow the user to configure the debugger behavior with respect to |
570 | what to do when an internal problem is detected. */ | |
571 | ||
572 | const char internal_problem_ask[] = "ask"; | |
573 | const char internal_problem_yes[] = "yes"; | |
574 | const char internal_problem_no[] = "no"; | |
40478521 | 575 | static const char *const internal_problem_modes[] = |
3c16cced PA |
576 | { |
577 | internal_problem_ask, | |
578 | internal_problem_yes, | |
579 | internal_problem_no, | |
580 | NULL | |
581 | }; | |
3c16cced | 582 | |
581e13c1 | 583 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
584 | if they want to continue, dump core, or just exit. Return |
585 | something to indicate a quit. */ | |
c906108c | 586 | |
dec43320 | 587 | struct internal_problem |
c906108c | 588 | { |
dec43320 | 589 | const char *name; |
57fcfb1b | 590 | int user_settable_should_quit; |
3c16cced | 591 | const char *should_quit; |
57fcfb1b | 592 | int user_settable_should_dump_core; |
3c16cced | 593 | const char *should_dump_core; |
dec43320 AC |
594 | }; |
595 | ||
596 | /* Report a problem, internal to GDB, to the user. Once the problem | |
597 | has been reported, and assuming GDB didn't quit, the caller can | |
598 | either allow execution to resume or throw an error. */ | |
599 | ||
a0b31db1 | 600 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 601 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 602 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 603 | { |
dec43320 | 604 | static int dejavu; |
375fc983 | 605 | int quit_p; |
7be570e7 | 606 | int dump_core_p; |
714b1282 | 607 | char *reason; |
48be7c1b | 608 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
c906108c | 609 | |
dec43320 | 610 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
611 | { |
612 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 613 | |
714b1282 AC |
614 | switch (dejavu) |
615 | { | |
616 | case 0: | |
617 | dejavu = 1; | |
618 | break; | |
619 | case 1: | |
620 | dejavu = 2; | |
2437fd32 | 621 | abort_with_message (msg); |
714b1282 AC |
622 | default: |
623 | dejavu = 3; | |
bf1d7d9c JB |
624 | /* Newer GLIBC versions put the warn_unused_result attribute |
625 | on write, but this is one of those rare cases where | |
626 | ignoring the return value is correct. Casting to (void) | |
627 | does not fix this problem. This is the solution suggested | |
628 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
629 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 630 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
631 | exit (1); |
632 | } | |
633 | } | |
c906108c | 634 | |
714b1282 AC |
635 | /* Create a string containing the full error/warning message. Need |
636 | to call query with this full string, as otherwize the reason | |
637 | (error/warning) and question become separated. Format using a | |
638 | style similar to a compiler error message. Include extra detail | |
639 | so that the user knows that they are living on the edge. */ | |
640 | { | |
641 | char *msg; | |
5d502164 | 642 | |
e623b504 | 643 | msg = xstrvprintf (fmt, ap); |
3e43a32a MS |
644 | reason = xstrprintf ("%s:%d: %s: %s\n" |
645 | "A problem internal to GDB has been detected,\n" | |
646 | "further debugging may prove unreliable.", | |
647 | file, line, problem->name, msg); | |
714b1282 AC |
648 | xfree (msg); |
649 | make_cleanup (xfree, reason); | |
650 | } | |
7be570e7 | 651 | |
2437fd32 GB |
652 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
653 | if (gdb_stderr == NULL) | |
654 | { | |
655 | fputs (reason, stderr); | |
656 | abort_with_message ("\n"); | |
657 | } | |
658 | ||
659 | /* Try to get the message out and at the start of a new line. */ | |
660 | if (target_supports_terminal_ours ()) | |
c5ac1540 PA |
661 | { |
662 | make_cleanup_restore_target_terminal (); | |
663 | target_terminal_ours_for_output (); | |
664 | } | |
2437fd32 GB |
665 | if (filtered_printing_initialized ()) |
666 | begin_line (); | |
667 | ||
196a707b | 668 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
669 | if (problem->should_quit != internal_problem_ask |
670 | || !confirm | |
671 | || !filtered_printing_initialized ()) | |
196a707b GB |
672 | fprintf_unfiltered (gdb_stderr, "%s\n", reason); |
673 | ||
3c16cced | 674 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 675 | { |
dec43320 | 676 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
677 | this lessens the likelihood of GDB going into an infinite |
678 | loop. */ | |
2437fd32 | 679 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 680 | quit_p = 1; |
26bb68be PP |
681 | else |
682 | quit_p = query (_("%s\nQuit this debugging session? "), reason); | |
dec43320 | 683 | } |
3c16cced PA |
684 | else if (problem->should_quit == internal_problem_yes) |
685 | quit_p = 1; | |
686 | else if (problem->should_quit == internal_problem_no) | |
687 | quit_p = 0; | |
688 | else | |
689 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 690 | |
add6c04d GB |
691 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
692 | if (REPORT_BUGS_TO[0]) | |
693 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
694 | REPORT_BUGS_TO); | |
695 | fputs_unfiltered ("\n\n", gdb_stderr); | |
696 | ||
3c16cced | 697 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 698 | { |
eae7090b | 699 | if (!can_dump_core_warn (LIMIT_MAX, reason)) |
7991dee7 | 700 | dump_core_p = 0; |
2437fd32 GB |
701 | else if (!filtered_printing_initialized ()) |
702 | dump_core_p = 1; | |
7991dee7 JK |
703 | else |
704 | { | |
705 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
706 | `dropping' so that it is easier to see that something went | |
707 | wrong in GDB. */ | |
708 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); | |
709 | } | |
dec43320 | 710 | } |
3c16cced | 711 | else if (problem->should_dump_core == internal_problem_yes) |
eae7090b | 712 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason); |
3c16cced PA |
713 | else if (problem->should_dump_core == internal_problem_no) |
714 | dump_core_p = 0; | |
715 | else | |
716 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 717 | |
375fc983 | 718 | if (quit_p) |
7be570e7 JM |
719 | { |
720 | if (dump_core_p) | |
7991dee7 | 721 | dump_core (); |
375fc983 AC |
722 | else |
723 | exit (1); | |
7be570e7 JM |
724 | } |
725 | else | |
726 | { | |
727 | if (dump_core_p) | |
375fc983 | 728 | { |
9b265ec2 | 729 | #ifdef HAVE_WORKING_FORK |
375fc983 | 730 | if (fork () == 0) |
7991dee7 | 731 | dump_core (); |
9b265ec2 | 732 | #endif |
375fc983 | 733 | } |
7be570e7 | 734 | } |
96baa820 JM |
735 | |
736 | dejavu = 0; | |
48be7c1b | 737 | do_cleanups (cleanup); |
dec43320 AC |
738 | } |
739 | ||
740 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 741 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
742 | }; |
743 | ||
c25c4a8b | 744 | void |
8731e58e | 745 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
746 | { |
747 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 748 | throw_quit (_("Command aborted.")); |
c906108c SS |
749 | } |
750 | ||
dec43320 | 751 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 752 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
753 | }; |
754 | ||
755 | void | |
8731e58e | 756 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
757 | { |
758 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
759 | } | |
760 | ||
57fcfb1b GB |
761 | static struct internal_problem demangler_warning_problem = { |
762 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
763 | }; | |
764 | ||
765 | void | |
766 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
767 | { | |
768 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
769 | } | |
770 | ||
771 | void | |
772 | demangler_warning (const char *file, int line, const char *string, ...) | |
773 | { | |
774 | va_list ap; | |
775 | ||
776 | va_start (ap, string); | |
777 | demangler_vwarning (file, line, string, ap); | |
778 | va_end (ap); | |
779 | } | |
780 | ||
3c16cced PA |
781 | /* Dummy functions to keep add_prefix_cmd happy. */ |
782 | ||
783 | static void | |
784 | set_internal_problem_cmd (char *args, int from_tty) | |
785 | { | |
786 | } | |
787 | ||
788 | static void | |
789 | show_internal_problem_cmd (char *args, int from_tty) | |
790 | { | |
791 | } | |
792 | ||
793 | /* When GDB reports an internal problem (error or warning) it gives | |
794 | the user the opportunity to quit GDB and/or create a core file of | |
795 | the current debug session. This function registers a few commands | |
796 | that make it possible to specify that GDB should always or never | |
797 | quit or create a core file, without asking. The commands look | |
798 | like: | |
799 | ||
800 | maint set PROBLEM-NAME quit ask|yes|no | |
801 | maint show PROBLEM-NAME quit | |
802 | maint set PROBLEM-NAME corefile ask|yes|no | |
803 | maint show PROBLEM-NAME corefile | |
804 | ||
805 | Where PROBLEM-NAME is currently "internal-error" or | |
806 | "internal-warning". */ | |
807 | ||
808 | static void | |
809 | add_internal_problem_command (struct internal_problem *problem) | |
810 | { | |
811 | struct cmd_list_element **set_cmd_list; | |
812 | struct cmd_list_element **show_cmd_list; | |
813 | char *set_doc; | |
814 | char *show_doc; | |
815 | ||
8d749320 SM |
816 | set_cmd_list = XNEW (struct cmd_list_element *); |
817 | show_cmd_list = XNEW (struct cmd_list_element *); | |
3c16cced PA |
818 | *set_cmd_list = NULL; |
819 | *show_cmd_list = NULL; | |
820 | ||
821 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
822 | problem->name); | |
823 | ||
824 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
825 | problem->name); | |
826 | ||
827 | add_prefix_cmd ((char*) problem->name, | |
828 | class_maintenance, set_internal_problem_cmd, set_doc, | |
829 | set_cmd_list, | |
c4f7c687 MK |
830 | concat ("maintenance set ", problem->name, " ", |
831 | (char *) NULL), | |
3c16cced PA |
832 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
833 | ||
834 | add_prefix_cmd ((char*) problem->name, | |
835 | class_maintenance, show_internal_problem_cmd, show_doc, | |
836 | show_cmd_list, | |
c4f7c687 MK |
837 | concat ("maintenance show ", problem->name, " ", |
838 | (char *) NULL), | |
3c16cced PA |
839 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
840 | ||
57fcfb1b GB |
841 | if (problem->user_settable_should_quit) |
842 | { | |
843 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
844 | "when an %s is detected"), | |
845 | problem->name); | |
846 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
847 | "when an %s is detected"), | |
848 | problem->name); | |
849 | add_setshow_enum_cmd ("quit", class_maintenance, | |
850 | internal_problem_modes, | |
851 | &problem->should_quit, | |
852 | set_doc, | |
853 | show_doc, | |
854 | NULL, /* help_doc */ | |
855 | NULL, /* setfunc */ | |
856 | NULL, /* showfunc */ | |
857 | set_cmd_list, | |
858 | show_cmd_list); | |
859 | ||
860 | xfree (set_doc); | |
861 | xfree (show_doc); | |
862 | } | |
1eefb858 | 863 | |
57fcfb1b GB |
864 | if (problem->user_settable_should_dump_core) |
865 | { | |
866 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
867 | "file of GDB when %s is detected"), | |
868 | problem->name); | |
869 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
870 | "file of GDB when %s is detected"), | |
871 | problem->name); | |
872 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
873 | internal_problem_modes, | |
874 | &problem->should_dump_core, | |
875 | set_doc, | |
876 | show_doc, | |
877 | NULL, /* help_doc */ | |
878 | NULL, /* setfunc */ | |
879 | NULL, /* showfunc */ | |
880 | set_cmd_list, | |
881 | show_cmd_list); | |
882 | ||
883 | xfree (set_doc); | |
884 | xfree (show_doc); | |
885 | } | |
3c16cced PA |
886 | } |
887 | ||
0cf4063e JB |
888 | /* Return a newly allocated string, containing the PREFIX followed |
889 | by the system error message for errno (separated by a colon). | |
890 | ||
891 | The result must be deallocated after use. */ | |
892 | ||
893 | static char * | |
894 | perror_string (const char *prefix) | |
895 | { | |
896 | char *err; | |
897 | char *combined; | |
898 | ||
899 | err = safe_strerror (errno); | |
900 | combined = (char *) xmalloc (strlen (err) + strlen (prefix) + 3); | |
901 | strcpy (combined, prefix); | |
902 | strcat (combined, ": "); | |
903 | strcat (combined, err); | |
904 | ||
905 | return combined; | |
906 | } | |
907 | ||
c906108c | 908 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
909 | as the file name for which the error was encountered. Use ERRCODE |
910 | for the thrown exception. Then return to command level. */ | |
c906108c | 911 | |
c25c4a8b | 912 | void |
598d3636 | 913 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 914 | { |
c906108c SS |
915 | char *combined; |
916 | ||
0cf4063e JB |
917 | combined = perror_string (string); |
918 | make_cleanup (xfree, combined); | |
c906108c SS |
919 | |
920 | /* I understand setting these is a matter of taste. Still, some people | |
921 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 922 | unreasonable. */ |
c906108c SS |
923 | bfd_set_error (bfd_error_no_error); |
924 | errno = 0; | |
925 | ||
598d3636 JK |
926 | throw_error (errcode, _("%s."), combined); |
927 | } | |
928 | ||
929 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
930 | ||
931 | void | |
932 | perror_with_name (const char *string) | |
933 | { | |
934 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
935 | } |
936 | ||
7c647d61 JB |
937 | /* Same as perror_with_name except that it prints a warning instead |
938 | of throwing an error. */ | |
939 | ||
940 | void | |
941 | perror_warning_with_name (const char *string) | |
942 | { | |
943 | char *combined; | |
944 | ||
945 | combined = perror_string (string); | |
946 | warning (_("%s"), combined); | |
947 | xfree (combined); | |
948 | } | |
949 | ||
c906108c SS |
950 | /* Print the system error message for ERRCODE, and also mention STRING |
951 | as the file name for which the error was encountered. */ | |
952 | ||
953 | void | |
6972bc8b | 954 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
955 | { |
956 | char *err; | |
957 | char *combined; | |
958 | ||
959 | err = safe_strerror (errcode); | |
960 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
961 | strcpy (combined, string); | |
962 | strcat (combined, ": "); | |
963 | strcat (combined, err); | |
964 | ||
965 | /* We want anything which was printed on stdout to come out first, before | |
966 | this message. */ | |
967 | gdb_flush (gdb_stdout); | |
968 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
969 | } | |
970 | ||
971 | /* Control C eventually causes this to be called, at a convenient time. */ | |
972 | ||
973 | void | |
fba45db2 | 974 | quit (void) |
c906108c | 975 | { |
f38d3ad1 PA |
976 | struct ui *ui = current_ui; |
977 | ||
06c868a8 JK |
978 | if (sync_quit_force_run) |
979 | { | |
980 | sync_quit_force_run = 0; | |
268a799a | 981 | quit_force (NULL, 0); |
06c868a8 JK |
982 | } |
983 | ||
7be570e7 JM |
984 | #ifdef __MSDOS__ |
985 | /* No steenking SIGINT will ever be coming our way when the | |
986 | program is resumed. Don't lie. */ | |
2c51604d | 987 | throw_quit ("Quit"); |
7be570e7 | 988 | #else |
c906108c | 989 | if (job_control |
8731e58e AC |
990 | /* If there is no terminal switching for this target, then we can't |
991 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 992 | || !target_supports_terminal_ours ()) |
2c51604d | 993 | throw_quit ("Quit"); |
c906108c | 994 | else |
2c51604d | 995 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 996 | #endif |
c906108c SS |
997 | } |
998 | ||
abc56d60 PA |
999 | /* See defs.h. */ |
1000 | ||
1001 | void | |
1002 | maybe_quit (void) | |
1003 | { | |
048094ac | 1004 | if (sync_quit_force_run) |
abc56d60 | 1005 | quit (); |
048094ac PA |
1006 | |
1007 | quit_handler (); | |
1008 | ||
abc56d60 PA |
1009 | if (deprecated_interactive_hook) |
1010 | deprecated_interactive_hook (); | |
abc56d60 PA |
1011 | } |
1012 | ||
c906108c | 1013 | \f |
c906108c | 1014 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 1015 | memory requested in SIZE. */ |
c906108c | 1016 | |
c25c4a8b | 1017 | void |
d26e3629 | 1018 | malloc_failure (long size) |
c906108c SS |
1019 | { |
1020 | if (size > 0) | |
1021 | { | |
8e65ff28 | 1022 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1023 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 1024 | size); |
c906108c SS |
1025 | } |
1026 | else | |
1027 | { | |
e2e0b3e5 | 1028 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
1029 | } |
1030 | } | |
1031 | ||
c906108c SS |
1032 | /* My replacement for the read system call. |
1033 | Used like `read' but keeps going if `read' returns too soon. */ | |
1034 | ||
1035 | int | |
fba45db2 | 1036 | myread (int desc, char *addr, int len) |
c906108c | 1037 | { |
52f0bd74 | 1038 | int val; |
c906108c SS |
1039 | int orglen = len; |
1040 | ||
1041 | while (len > 0) | |
1042 | { | |
1043 | val = read (desc, addr, len); | |
1044 | if (val < 0) | |
1045 | return val; | |
1046 | if (val == 0) | |
1047 | return orglen - len; | |
1048 | len -= val; | |
1049 | addr += val; | |
1050 | } | |
1051 | return orglen; | |
1052 | } | |
d26e3629 | 1053 | |
c906108c | 1054 | void |
aa1ee363 | 1055 | print_spaces (int n, struct ui_file *file) |
c906108c | 1056 | { |
392a587b | 1057 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1058 | } |
1059 | ||
1060 | /* Print a host address. */ | |
1061 | ||
1062 | void | |
b80c3053 | 1063 | gdb_print_host_address_1 (const void *addr, struct ui_file *stream) |
c906108c | 1064 | { |
ea8992ce | 1065 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 1066 | } |
7c50a931 DE |
1067 | |
1068 | /* See utils.h. */ | |
1069 | ||
1070 | char * | |
1071 | make_hex_string (const gdb_byte *data, size_t length) | |
1072 | { | |
224c3ddb | 1073 | char *result = (char *) xmalloc (length * 2 + 1); |
7c50a931 DE |
1074 | char *p; |
1075 | size_t i; | |
1076 | ||
1077 | p = result; | |
1078 | for (i = 0; i < length; ++i) | |
dc4d6886 | 1079 | p += xsnprintf (p, 3, "%02x", data[i]); |
7c50a931 DE |
1080 | *p = '\0'; |
1081 | return result; | |
1082 | } | |
1083 | ||
c906108c | 1084 | \f |
c5aa993b | 1085 | |
db1ff28b JK |
1086 | /* A cleanup function that calls regfree. */ |
1087 | ||
1088 | static void | |
1089 | do_regfree_cleanup (void *r) | |
1090 | { | |
19ba03f4 | 1091 | regfree ((regex_t *) r); |
db1ff28b JK |
1092 | } |
1093 | ||
1094 | /* Create a new cleanup that frees the compiled regular expression R. */ | |
1095 | ||
1096 | struct cleanup * | |
1097 | make_regfree_cleanup (regex_t *r) | |
1098 | { | |
1099 | return make_cleanup (do_regfree_cleanup, r); | |
1100 | } | |
1101 | ||
1102 | /* Return an xmalloc'd error message resulting from a regular | |
1103 | expression compilation failure. */ | |
1104 | ||
1105 | char * | |
1106 | get_regcomp_error (int code, regex_t *rx) | |
1107 | { | |
1108 | size_t length = regerror (code, rx, NULL, 0); | |
224c3ddb | 1109 | char *result = (char *) xmalloc (length); |
db1ff28b JK |
1110 | |
1111 | regerror (code, rx, result, length); | |
1112 | return result; | |
1113 | } | |
1114 | ||
1115 | /* Compile a regexp and throw an exception on error. This returns a | |
1116 | cleanup to free the resulting pattern on success. RX must not be | |
1117 | NULL. */ | |
1118 | ||
1119 | struct cleanup * | |
1120 | compile_rx_or_error (regex_t *pattern, const char *rx, const char *message) | |
1121 | { | |
1122 | int code; | |
1123 | ||
1124 | gdb_assert (rx != NULL); | |
1125 | ||
1126 | code = regcomp (pattern, rx, REG_NOSUB); | |
1127 | if (code != 0) | |
1128 | { | |
1129 | char *err = get_regcomp_error (code, pattern); | |
1130 | ||
1131 | make_cleanup (xfree, err); | |
1132 | error (("%s: %s"), message, err); | |
1133 | } | |
1134 | ||
1135 | return make_regfree_cleanup (pattern); | |
1136 | } | |
1137 | ||
3eb7562a PA |
1138 | /* A cleanup that simply calls ui_unregister_input_event_handler. */ |
1139 | ||
1140 | static void | |
1141 | ui_unregister_input_event_handler_cleanup (void *ui) | |
1142 | { | |
1143 | ui_unregister_input_event_handler ((struct ui *) ui); | |
1144 | } | |
1145 | ||
1146 | /* Set up to handle input. */ | |
1147 | ||
1148 | static struct cleanup * | |
1149 | prepare_to_handle_input (void) | |
1150 | { | |
1151 | struct cleanup *old_chain; | |
1152 | ||
1153 | old_chain = make_cleanup_restore_target_terminal (); | |
1154 | target_terminal_ours (); | |
1155 | ||
1156 | ui_register_input_event_handler (current_ui); | |
1157 | if (current_ui->prompt_state == PROMPT_BLOCKED) | |
1158 | make_cleanup (ui_unregister_input_event_handler_cleanup, current_ui); | |
1159 | ||
1160 | make_cleanup_override_quit_handler (default_quit_handler); | |
1161 | ||
1162 | return old_chain; | |
1163 | } | |
1164 | ||
db1ff28b JK |
1165 | \f |
1166 | ||
981c7f5a | 1167 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 1168 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
1169 | answer is yes, or default the answer to the specified default |
1170 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
1171 | default answer, or '\0' for no default. | |
cbdeadca JJ |
1172 | CTLSTR is the control string and should end in "? ". It should |
1173 | not say how to answer, because we do that. | |
1174 | ARGS are the arguments passed along with the CTLSTR argument to | |
1175 | printf. */ | |
1176 | ||
a0b31db1 | 1177 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
1178 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
1179 | { | |
cbdeadca JJ |
1180 | int ans2; |
1181 | int retval; | |
1182 | int def_value; | |
1183 | char def_answer, not_def_answer; | |
588dcc3e | 1184 | char *y_string, *n_string, *question, *prompt; |
80dbc9fd | 1185 | struct cleanup *old_chain; |
cbdeadca JJ |
1186 | |
1187 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
1188 | if (defchar == '\0') |
1189 | { | |
1190 | def_value = 1; | |
1191 | def_answer = 'Y'; | |
1192 | not_def_answer = 'N'; | |
1193 | y_string = "y"; | |
1194 | n_string = "n"; | |
1195 | } | |
1196 | else if (defchar == 'y') | |
cbdeadca JJ |
1197 | { |
1198 | def_value = 1; | |
1199 | def_answer = 'Y'; | |
1200 | not_def_answer = 'N'; | |
1201 | y_string = "[y]"; | |
1202 | n_string = "n"; | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | def_value = 0; | |
1207 | def_answer = 'N'; | |
1208 | not_def_answer = 'Y'; | |
1209 | y_string = "y"; | |
1210 | n_string = "[n]"; | |
1211 | } | |
1212 | ||
981c7f5a | 1213 | /* Automatically answer the default value if the user did not want |
a502cf95 | 1214 | prompts or the command was issued with the server prefix. */ |
e360902b | 1215 | if (!confirm || server_command) |
981c7f5a DJ |
1216 | return def_value; |
1217 | ||
1218 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 1219 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
1220 | way, important error messages don't get lost when talking to GDB |
1221 | over a pipe. */ | |
268a799a PA |
1222 | if (current_ui->instream != current_ui->stdin_stream |
1223 | || !input_interactive_p (current_ui)) | |
981c7f5a | 1224 | { |
3eb7562a PA |
1225 | old_chain = make_cleanup_restore_target_terminal (); |
1226 | ||
651ce16a | 1227 | target_terminal_ours_for_output (); |
981c7f5a DJ |
1228 | wrap_here (""); |
1229 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1230 | ||
3e43a32a MS |
1231 | printf_filtered (_("(%s or %s) [answered %c; " |
1232 | "input not from terminal]\n"), | |
981c7f5a DJ |
1233 | y_string, n_string, def_answer); |
1234 | gdb_flush (gdb_stdout); | |
1235 | ||
651ce16a | 1236 | do_cleanups (old_chain); |
981c7f5a DJ |
1237 | return def_value; |
1238 | } | |
1239 | ||
9a4105ab | 1240 | if (deprecated_query_hook) |
cbdeadca | 1241 | { |
651ce16a | 1242 | int res; |
cbdeadca | 1243 | |
3eb7562a | 1244 | old_chain = make_cleanup_restore_target_terminal (); |
651ce16a PA |
1245 | res = deprecated_query_hook (ctlstr, args); |
1246 | do_cleanups (old_chain); | |
1247 | return res; | |
1248 | } | |
80dbc9fd | 1249 | |
981c7f5a DJ |
1250 | /* Format the question outside of the loop, to avoid reusing args. */ |
1251 | question = xstrvprintf (ctlstr, args); | |
3eb7562a | 1252 | old_chain = make_cleanup (xfree, question); |
588dcc3e PP |
1253 | prompt = xstrprintf (_("%s%s(%s or %s) %s"), |
1254 | annotation_level > 1 ? "\n\032\032pre-query\n" : "", | |
1255 | question, y_string, n_string, | |
1256 | annotation_level > 1 ? "\n\032\032query\n" : ""); | |
80dbc9fd | 1257 | make_cleanup (xfree, prompt); |
981c7f5a | 1258 | |
dcb07cfa PA |
1259 | /* Used to add duration we waited for user to respond to |
1260 | prompt_for_continue_wait_time. */ | |
1261 | using namespace std::chrono; | |
1262 | steady_clock::time_point prompt_started = steady_clock::now (); | |
260c0b2a | 1263 | |
3eb7562a | 1264 | prepare_to_handle_input (); |
651ce16a | 1265 | |
cbdeadca JJ |
1266 | while (1) |
1267 | { | |
588dcc3e | 1268 | char *response, answer; |
cbdeadca | 1269 | |
cbdeadca | 1270 | gdb_flush (gdb_stdout); |
588dcc3e | 1271 | response = gdb_readline_wrapper (prompt); |
cbdeadca | 1272 | |
588dcc3e | 1273 | if (response == NULL) /* C-d */ |
cbdeadca | 1274 | { |
fa3fd85b | 1275 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1276 | retval = def_value; |
1277 | break; | |
1278 | } | |
588dcc3e PP |
1279 | |
1280 | answer = response[0]; | |
1281 | xfree (response); | |
cbdeadca JJ |
1282 | |
1283 | if (answer >= 'a') | |
1284 | answer -= 040; | |
1285 | /* Check answer. For the non-default, the user must specify | |
1286 | the non-default explicitly. */ | |
1287 | if (answer == not_def_answer) | |
1288 | { | |
1289 | retval = !def_value; | |
1290 | break; | |
1291 | } | |
981c7f5a DJ |
1292 | /* Otherwise, if a default was specified, the user may either |
1293 | specify the required input or have it default by entering | |
1294 | nothing. */ | |
1295 | if (answer == def_answer | |
588dcc3e | 1296 | || (defchar != '\0' && answer == '\0')) |
cbdeadca JJ |
1297 | { |
1298 | retval = def_value; | |
1299 | break; | |
1300 | } | |
1301 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1302 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1303 | y_string, n_string); |
1304 | } | |
1305 | ||
260c0b2a | 1306 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1307 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1308 | |
cbdeadca | 1309 | if (annotation_level > 1) |
a3f17187 | 1310 | printf_filtered (("\n\032\032post-query\n")); |
80dbc9fd | 1311 | do_cleanups (old_chain); |
cbdeadca JJ |
1312 | return retval; |
1313 | } | |
1314 | \f | |
1315 | ||
1316 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1317 | answer is yes, or 0 if answer is defaulted. | |
1318 | Takes three args which are given to printf to print the question. | |
1319 | The first, a control string, should end in "? ". | |
1320 | It should not say how to answer, because we do that. */ | |
1321 | ||
1322 | int | |
1323 | nquery (const char *ctlstr, ...) | |
1324 | { | |
1325 | va_list args; | |
899500d6 | 1326 | int ret; |
cbdeadca JJ |
1327 | |
1328 | va_start (args, ctlstr); | |
899500d6 | 1329 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1330 | va_end (args); |
899500d6 | 1331 | return ret; |
cbdeadca JJ |
1332 | } |
1333 | ||
1334 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1335 | answer is yes, or 1 if answer is defaulted. | |
1336 | Takes three args which are given to printf to print the question. | |
1337 | The first, a control string, should end in "? ". | |
1338 | It should not say how to answer, because we do that. */ | |
1339 | ||
1340 | int | |
1341 | yquery (const char *ctlstr, ...) | |
1342 | { | |
1343 | va_list args; | |
899500d6 | 1344 | int ret; |
cbdeadca JJ |
1345 | |
1346 | va_start (args, ctlstr); | |
899500d6 | 1347 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1348 | va_end (args); |
899500d6 | 1349 | return ret; |
cbdeadca JJ |
1350 | } |
1351 | ||
981c7f5a DJ |
1352 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1353 | Takes three args which are given to printf to print the question. | |
1354 | The first, a control string, should end in "? ". | |
1355 | It should not say how to answer, because we do that. */ | |
1356 | ||
1357 | int | |
1358 | query (const char *ctlstr, ...) | |
1359 | { | |
1360 | va_list args; | |
899500d6 | 1361 | int ret; |
981c7f5a DJ |
1362 | |
1363 | va_start (args, ctlstr); | |
899500d6 | 1364 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1365 | va_end (args); |
899500d6 | 1366 | return ret; |
981c7f5a DJ |
1367 | } |
1368 | ||
6c7a06a3 TT |
1369 | /* A helper for parse_escape that converts a host character to a |
1370 | target character. C is the host character. If conversion is | |
1371 | possible, then the target character is stored in *TARGET_C and the | |
1372 | function returns 1. Otherwise, the function returns 0. */ | |
1373 | ||
1374 | static int | |
f870a310 | 1375 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1376 | { |
6c7a06a3 TT |
1377 | struct obstack host_data; |
1378 | char the_char = c; | |
1379 | struct cleanup *cleanups; | |
1380 | int result = 0; | |
234b45d4 | 1381 | |
6c7a06a3 TT |
1382 | obstack_init (&host_data); |
1383 | cleanups = make_cleanup_obstack_free (&host_data); | |
234b45d4 | 1384 | |
f870a310 | 1385 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1386 | (gdb_byte *) &the_char, 1, 1, |
1387 | &host_data, translit_none); | |
6c7a06a3 TT |
1388 | |
1389 | if (obstack_object_size (&host_data) == 1) | |
1390 | { | |
1391 | result = 1; | |
1392 | *target_c = *(char *) obstack_base (&host_data); | |
1393 | } | |
1394 | ||
1395 | do_cleanups (cleanups); | |
1396 | return result; | |
234b45d4 KB |
1397 | } |
1398 | ||
c906108c SS |
1399 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1400 | containing a pointer to the string to parse. That pointer | |
1401 | should point to the character after the \. That pointer | |
1402 | is updated past the characters we use. The value of the | |
1403 | escape sequence is returned. | |
1404 | ||
1405 | A negative value means the sequence \ newline was seen, | |
1406 | which is supposed to be equivalent to nothing at all. | |
1407 | ||
1408 | If \ is followed by a null character, we return a negative | |
1409 | value and leave the string pointer pointing at the null character. | |
1410 | ||
1411 | If \ is followed by 000, we return 0 and leave the string pointer | |
1412 | after the zeros. A value of 0 does not mean end of string. */ | |
1413 | ||
1414 | int | |
d7561cbb | 1415 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1416 | { |
581e13c1 | 1417 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1418 | int c = *(*string_ptr)++; |
e0627e85 | 1419 | |
6c7a06a3 TT |
1420 | switch (c) |
1421 | { | |
8731e58e AC |
1422 | case '\n': |
1423 | return -2; | |
1424 | case 0: | |
1425 | (*string_ptr)--; | |
1426 | return 0; | |
8731e58e AC |
1427 | |
1428 | case '0': | |
1429 | case '1': | |
1430 | case '2': | |
1431 | case '3': | |
1432 | case '4': | |
1433 | case '5': | |
1434 | case '6': | |
1435 | case '7': | |
1436 | { | |
6c7a06a3 | 1437 | int i = host_hex_value (c); |
aa1ee363 | 1438 | int count = 0; |
8731e58e AC |
1439 | while (++count < 3) |
1440 | { | |
5cb316ef | 1441 | c = (**string_ptr); |
6c7a06a3 | 1442 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1443 | { |
5cb316ef | 1444 | (*string_ptr)++; |
8731e58e | 1445 | i *= 8; |
6c7a06a3 | 1446 | i += host_hex_value (c); |
8731e58e AC |
1447 | } |
1448 | else | |
1449 | { | |
8731e58e AC |
1450 | break; |
1451 | } | |
1452 | } | |
1453 | return i; | |
1454 | } | |
6c7a06a3 TT |
1455 | |
1456 | case 'a': | |
1457 | c = '\a'; | |
1458 | break; | |
1459 | case 'b': | |
1460 | c = '\b'; | |
1461 | break; | |
1462 | case 'f': | |
1463 | c = '\f'; | |
1464 | break; | |
1465 | case 'n': | |
1466 | c = '\n'; | |
1467 | break; | |
1468 | case 'r': | |
1469 | c = '\r'; | |
1470 | break; | |
1471 | case 't': | |
1472 | c = '\t'; | |
1473 | break; | |
1474 | case 'v': | |
1475 | c = '\v'; | |
1476 | break; | |
1477 | ||
1478 | default: | |
1479 | break; | |
1480 | } | |
1481 | ||
f870a310 | 1482 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1483 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1484 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1485 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1486 | return target_char; |
c906108c SS |
1487 | } |
1488 | \f | |
1489 | /* Print the character C on STREAM as part of the contents of a literal | |
1490 | string whose delimiter is QUOTER. Note that this routine should only | |
f9acce4a | 1491 | be called for printing things which are independent of the language |
6ef284bd SM |
1492 | of the program being debugged. |
1493 | ||
1494 | printchar will normally escape backslashes and instances of QUOTER. If | |
1495 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1496 | As a side effect, if you pass the backslash character as the QUOTER, | |
1497 | printchar will escape backslashes as usual, but not any other quoting | |
1498 | character. */ | |
c906108c | 1499 | |
43e526b9 | 1500 | static void |
74f832da | 1501 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1502 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1503 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1504 | { |
c906108c SS |
1505 | c &= 0xFF; /* Avoid sign bit follies */ |
1506 | ||
c5aa993b JM |
1507 | if (c < 0x20 || /* Low control chars */ |
1508 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1509 | (sevenbit_strings && c >= 0x80)) | |
1510 | { /* high order bit set */ | |
1511 | switch (c) | |
1512 | { | |
1513 | case '\n': | |
43e526b9 | 1514 | do_fputs ("\\n", stream); |
c5aa993b JM |
1515 | break; |
1516 | case '\b': | |
43e526b9 | 1517 | do_fputs ("\\b", stream); |
c5aa993b JM |
1518 | break; |
1519 | case '\t': | |
43e526b9 | 1520 | do_fputs ("\\t", stream); |
c5aa993b JM |
1521 | break; |
1522 | case '\f': | |
43e526b9 | 1523 | do_fputs ("\\f", stream); |
c5aa993b JM |
1524 | break; |
1525 | case '\r': | |
43e526b9 | 1526 | do_fputs ("\\r", stream); |
c5aa993b JM |
1527 | break; |
1528 | case '\033': | |
43e526b9 | 1529 | do_fputs ("\\e", stream); |
c5aa993b JM |
1530 | break; |
1531 | case '\007': | |
43e526b9 | 1532 | do_fputs ("\\a", stream); |
c5aa993b JM |
1533 | break; |
1534 | default: | |
43e526b9 | 1535 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1536 | break; |
1537 | } | |
1538 | } | |
1539 | else | |
1540 | { | |
6ef284bd | 1541 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1542 | do_fputs ("\\", stream); |
1543 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1544 | } |
c906108c | 1545 | } |
43e526b9 JM |
1546 | |
1547 | /* Print the character C on STREAM as part of the contents of a | |
1548 | literal string whose delimiter is QUOTER. Note that these routines | |
1549 | should only be call for printing things which are independent of | |
581e13c1 | 1550 | the language of the program being debugged. */ |
43e526b9 JM |
1551 | |
1552 | void | |
fba45db2 | 1553 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1554 | { |
1555 | while (*str) | |
1556 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1557 | } | |
1558 | ||
1559 | void | |
fba45db2 | 1560 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1561 | { |
1562 | while (*str) | |
1563 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1564 | } | |
1565 | ||
0876f84a DJ |
1566 | void |
1567 | fputstrn_filtered (const char *str, int n, int quoter, | |
1568 | struct ui_file *stream) | |
1569 | { | |
1570 | int i; | |
e0627e85 | 1571 | |
0876f84a DJ |
1572 | for (i = 0; i < n; i++) |
1573 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1574 | } | |
1575 | ||
43e526b9 | 1576 | void |
8731e58e AC |
1577 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1578 | struct ui_file *stream) | |
43e526b9 JM |
1579 | { |
1580 | int i; | |
5d502164 | 1581 | |
43e526b9 JM |
1582 | for (i = 0; i < n; i++) |
1583 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1584 | } | |
c906108c | 1585 | \f |
c5aa993b | 1586 | |
c906108c SS |
1587 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1588 | static unsigned int lines_per_page; | |
920d2a44 AC |
1589 | static void |
1590 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1591 | struct cmd_list_element *c, const char *value) | |
1592 | { | |
3e43a32a MS |
1593 | fprintf_filtered (file, |
1594 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1595 | value); |
1596 | } | |
eb0d3137 | 1597 | |
cbfbd72a | 1598 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1599 | static unsigned int chars_per_line; |
920d2a44 AC |
1600 | static void |
1601 | show_chars_per_line (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 characters gdb thinks " | |
1606 | "are in a line is %s.\n"), | |
920d2a44 AC |
1607 | value); |
1608 | } | |
eb0d3137 | 1609 | |
c906108c SS |
1610 | /* Current count of lines printed on this page, chars on this line. */ |
1611 | static unsigned int lines_printed, chars_printed; | |
1612 | ||
1613 | /* Buffer and start column of buffered text, for doing smarter word- | |
1614 | wrapping. When someone calls wrap_here(), we start buffering output | |
1615 | that comes through fputs_filtered(). If we see a newline, we just | |
1616 | spit it out and forget about the wrap_here(). If we see another | |
1617 | wrap_here(), we spit it out and remember the newer one. If we see | |
1618 | the end of the line, we spit out a newline, the indent, and then | |
1619 | the buffered output. */ | |
1620 | ||
1621 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1622 | are waiting to be output (they have already been counted in chars_printed). | |
1623 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1624 | static char *wrap_buffer; | |
1625 | ||
1626 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1627 | static char *wrap_pointer; | |
1628 | ||
1629 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1630 | is non-zero. */ | |
1631 | static char *wrap_indent; | |
1632 | ||
1633 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1634 | is not in effect. */ | |
1635 | static int wrap_column; | |
c906108c | 1636 | \f |
c5aa993b | 1637 | |
26c4b26f | 1638 | /* Initialize the number of lines per page and chars per line. */ |
eb0d3137 | 1639 | |
c906108c | 1640 | void |
fba45db2 | 1641 | init_page_info (void) |
c906108c | 1642 | { |
5da1313b JK |
1643 | if (batch_flag) |
1644 | { | |
1645 | lines_per_page = UINT_MAX; | |
1646 | chars_per_line = UINT_MAX; | |
1647 | } | |
1648 | else | |
c906108c | 1649 | #if defined(TUI) |
5ecb1806 | 1650 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1651 | #endif |
1652 | { | |
eb0d3137 | 1653 | int rows, cols; |
c906108c | 1654 | |
ec145965 EZ |
1655 | #if defined(__GO32__) |
1656 | rows = ScreenRows (); | |
1657 | cols = ScreenCols (); | |
1658 | lines_per_page = rows; | |
1659 | chars_per_line = cols; | |
1660 | #else | |
eb0d3137 MK |
1661 | /* Make sure Readline has initialized its terminal settings. */ |
1662 | rl_reset_terminal (NULL); | |
c906108c | 1663 | |
eb0d3137 MK |
1664 | /* Get the screen size from Readline. */ |
1665 | rl_get_screen_size (&rows, &cols); | |
1666 | lines_per_page = rows; | |
1667 | chars_per_line = cols; | |
c906108c | 1668 | |
1a66331e PM |
1669 | /* Readline should have fetched the termcap entry for us. |
1670 | Only try to use tgetnum function if rl_get_screen_size | |
1671 | did not return a useful value. */ | |
1672 | if (((rows <= 0) && (tgetnum ("li") < 0)) | |
e681cf3f EZ |
1673 | /* Also disable paging if inside Emacs. $EMACS was used |
1674 | before Emacs v25.1, $INSIDE_EMACS is used since then. */ | |
1675 | || getenv ("EMACS") || getenv ("INSIDE_EMACS")) | |
eb0d3137 | 1676 | { |
1a66331e PM |
1677 | /* The number of lines per page is not mentioned in the terminal |
1678 | description or EMACS evironment variable is set. This probably | |
1679 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1680 | lines_per_page = UINT_MAX; |
1681 | } | |
c906108c | 1682 | |
c906108c | 1683 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1684 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1685 | lines_per_page = UINT_MAX; |
eb0d3137 | 1686 | #endif |
ec145965 | 1687 | } |
eb0d3137 | 1688 | |
24b73f8e PP |
1689 | /* We handle SIGWINCH ourselves. */ |
1690 | rl_catch_sigwinch = 0; | |
1691 | ||
eb0d3137 | 1692 | set_screen_size (); |
c5aa993b | 1693 | set_width (); |
c906108c SS |
1694 | } |
1695 | ||
2437fd32 GB |
1696 | /* Return nonzero if filtered printing is initialized. */ |
1697 | int | |
1698 | filtered_printing_initialized (void) | |
1699 | { | |
1700 | return wrap_buffer != NULL; | |
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 | ||
d6e5e7f7 PP |
1791 | /* See utils.h. */ |
1792 | ||
1793 | void | |
1794 | set_screen_width_and_height (int width, int height) | |
1795 | { | |
1796 | lines_per_page = height; | |
1797 | chars_per_line = width; | |
1798 | ||
1799 | set_screen_size (); | |
1800 | set_width (); | |
1801 | } | |
1802 | ||
c906108c | 1803 | /* Wait, so the user can read what's on the screen. Prompt the user |
720d2e96 PA |
1804 | to continue by pressing RETURN. 'q' is also provided because |
1805 | telling users what to do in the prompt is more user-friendly than | |
1806 | expecting them to think of Ctrl-C/SIGINT. */ | |
c906108c SS |
1807 | |
1808 | static void | |
fba45db2 | 1809 | prompt_for_continue (void) |
c906108c SS |
1810 | { |
1811 | char *ignore; | |
1812 | char cont_prompt[120]; | |
dcb07cfa | 1813 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
260c0b2a DE |
1814 | /* Used to add duration we waited for user to respond to |
1815 | prompt_for_continue_wait_time. */ | |
dcb07cfa PA |
1816 | using namespace std::chrono; |
1817 | steady_clock::time_point prompt_started = steady_clock::now (); | |
c906108c SS |
1818 | |
1819 | if (annotation_level > 1) | |
a3f17187 | 1820 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1821 | |
1822 | strcpy (cont_prompt, | |
1823 | "---Type <return> to continue, or q <return> to quit---"); | |
1824 | if (annotation_level > 1) | |
1825 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1826 | ||
720d2e96 PA |
1827 | /* We must do this *before* we call gdb_readline_wrapper, else it |
1828 | will eventually call us -- thinking that we're trying to print | |
1829 | beyond the end of the screen. */ | |
c906108c SS |
1830 | reinitialize_more_filter (); |
1831 | ||
3eb7562a | 1832 | prepare_to_handle_input (); |
82584158 | 1833 | |
720d2e96 PA |
1834 | /* Call gdb_readline_wrapper, not readline, in order to keep an |
1835 | event loop running. */ | |
b4f5539f | 1836 | ignore = gdb_readline_wrapper (cont_prompt); |
80dbc9fd | 1837 | make_cleanup (xfree, ignore); |
c906108c | 1838 | |
260c0b2a | 1839 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1840 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1841 | |
c906108c | 1842 | if (annotation_level > 1) |
a3f17187 | 1843 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c | 1844 | |
80dbc9fd | 1845 | if (ignore != NULL) |
c906108c SS |
1846 | { |
1847 | char *p = ignore; | |
5d502164 | 1848 | |
c906108c SS |
1849 | while (*p == ' ' || *p == '\t') |
1850 | ++p; | |
1851 | if (p[0] == 'q') | |
1690b616 SL |
1852 | /* Do not call quit here; there is no possibility of SIGINT. */ |
1853 | throw_quit ("Quit"); | |
c906108c | 1854 | } |
c906108c SS |
1855 | |
1856 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1857 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1858 | reinitialize_more_filter (); | |
1859 | ||
581e13c1 | 1860 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
80dbc9fd PA |
1861 | |
1862 | do_cleanups (old_chain); | |
c906108c SS |
1863 | } |
1864 | ||
26c4b26f | 1865 | /* Initialize timer to keep track of how long we waited for the user. */ |
bd712aed DE |
1866 | |
1867 | void | |
1868 | reset_prompt_for_continue_wait_time (void) | |
1869 | { | |
dcb07cfa | 1870 | using namespace std::chrono; |
bd712aed | 1871 | |
dcb07cfa | 1872 | prompt_for_continue_wait_time = steady_clock::duration::zero (); |
bd712aed DE |
1873 | } |
1874 | ||
1875 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1876 | ||
dcb07cfa PA |
1877 | std::chrono::steady_clock::duration |
1878 | get_prompt_for_continue_wait_time () | |
bd712aed DE |
1879 | { |
1880 | return prompt_for_continue_wait_time; | |
1881 | } | |
1882 | ||
c906108c SS |
1883 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1884 | ||
1885 | void | |
fba45db2 | 1886 | reinitialize_more_filter (void) |
c906108c SS |
1887 | { |
1888 | lines_printed = 0; | |
1889 | chars_printed = 0; | |
1890 | } | |
1891 | ||
1892 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1893 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1894 | If INDENT is non-null, it is a string to be printed to indent the |
1895 | wrapped part on the next line. INDENT must remain accessible until | |
1896 | the next call to wrap_here() or until a newline is printed through | |
1897 | fputs_filtered(). | |
1898 | ||
1899 | If the line is already overfull, we immediately print a newline and | |
1900 | the indentation, and disable further wrapping. | |
1901 | ||
1902 | If we don't know the width of lines, but we know the page height, | |
1903 | we must not wrap words, but should still keep track of newlines | |
1904 | that were explicitly printed. | |
1905 | ||
1906 | INDENT should not contain tabs, as that will mess up the char count | |
1907 | on the next line. FIXME. | |
1908 | ||
1909 | This routine is guaranteed to force out any output which has been | |
1910 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1911 | used to force out output from the wrap_buffer. */ | |
1912 | ||
1913 | void | |
fba45db2 | 1914 | wrap_here (char *indent) |
c906108c | 1915 | { |
581e13c1 | 1916 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1917 | if (!wrap_buffer) |
3e43a32a MS |
1918 | internal_error (__FILE__, __LINE__, |
1919 | _("failed internal consistency check")); | |
c906108c SS |
1920 | |
1921 | if (wrap_buffer[0]) | |
1922 | { | |
1923 | *wrap_pointer = '\0'; | |
1924 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1925 | } | |
1926 | wrap_pointer = wrap_buffer; | |
1927 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1928 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1929 | { |
1930 | wrap_column = 0; | |
1931 | } | |
1932 | else if (chars_printed >= chars_per_line) | |
1933 | { | |
1934 | puts_filtered ("\n"); | |
1935 | if (indent != NULL) | |
1936 | puts_filtered (indent); | |
1937 | wrap_column = 0; | |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | wrap_column = chars_printed; | |
1942 | if (indent == NULL) | |
1943 | wrap_indent = ""; | |
1944 | else | |
1945 | wrap_indent = indent; | |
1946 | } | |
1947 | } | |
1948 | ||
4a351cef | 1949 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1950 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1951 | right or left justified in the column. Never prints |
1952 | trailing spaces. String should never be longer than | |
1953 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1954 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1955 | |
1956 | void | |
1957 | puts_filtered_tabular (char *string, int width, int right) | |
1958 | { | |
1959 | int spaces = 0; | |
1960 | int stringlen; | |
1961 | char *spacebuf; | |
1962 | ||
1963 | gdb_assert (chars_per_line > 0); | |
1964 | if (chars_per_line == UINT_MAX) | |
1965 | { | |
1966 | fputs_filtered (string, gdb_stdout); | |
1967 | fputs_filtered ("\n", gdb_stdout); | |
1968 | return; | |
1969 | } | |
1970 | ||
1971 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1972 | fputs_filtered ("\n", gdb_stdout); | |
1973 | ||
1974 | if (width >= chars_per_line) | |
1975 | width = chars_per_line - 1; | |
1976 | ||
1977 | stringlen = strlen (string); | |
1978 | ||
1979 | if (chars_printed > 0) | |
1980 | spaces = width - (chars_printed - 1) % width - 1; | |
1981 | if (right) | |
1982 | spaces += width - stringlen; | |
1983 | ||
224c3ddb | 1984 | spacebuf = (char *) alloca (spaces + 1); |
4a351cef AF |
1985 | spacebuf[spaces] = '\0'; |
1986 | while (spaces--) | |
1987 | spacebuf[spaces] = ' '; | |
1988 | ||
1989 | fputs_filtered (spacebuf, gdb_stdout); | |
1990 | fputs_filtered (string, gdb_stdout); | |
1991 | } | |
1992 | ||
1993 | ||
c906108c | 1994 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 1995 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 1996 | any pending output for the current line, flush it and start a new |
581e13c1 | 1997 | line. Otherwise do nothing. */ |
c906108c SS |
1998 | |
1999 | void | |
fba45db2 | 2000 | begin_line (void) |
c906108c SS |
2001 | { |
2002 | if (chars_printed > 0) | |
2003 | { | |
2004 | puts_filtered ("\n"); | |
2005 | } | |
2006 | } | |
2007 | ||
ac9a91a7 | 2008 | |
c906108c SS |
2009 | /* Like fputs but if FILTER is true, pause after every screenful. |
2010 | ||
2011 | Regardless of FILTER can wrap at points other than the final | |
2012 | character of a line. | |
2013 | ||
2014 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
2015 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
2016 | anything. | |
2017 | ||
2018 | Note that a longjmp to top level may occur in this routine (only if | |
2019 | FILTER is true) (since prompt_for_continue may do so) so this | |
2020 | routine should not be called when cleanups are not in place. */ | |
2021 | ||
2022 | static void | |
fba45db2 KB |
2023 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
2024 | int filter) | |
c906108c SS |
2025 | { |
2026 | const char *lineptr; | |
2027 | ||
2028 | if (linebuffer == 0) | |
2029 | return; | |
2030 | ||
2031 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 2032 | if (stream != gdb_stdout |
b2e7f004 JK |
2033 | || !pagination_enabled |
2034 | || batch_flag | |
390a8aca | 2035 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 2036 | || top_level_interpreter () == NULL |
390a8aca | 2037 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
c906108c SS |
2038 | { |
2039 | fputs_unfiltered (linebuffer, stream); | |
2040 | return; | |
2041 | } | |
2042 | ||
2043 | /* Go through and output each character. Show line extension | |
2044 | when this is necessary; prompt user for new page when this is | |
2045 | necessary. */ | |
c5aa993b | 2046 | |
c906108c SS |
2047 | lineptr = linebuffer; |
2048 | while (*lineptr) | |
2049 | { | |
2050 | /* Possible new page. */ | |
8731e58e | 2051 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
2052 | prompt_for_continue (); |
2053 | ||
2054 | while (*lineptr && *lineptr != '\n') | |
2055 | { | |
2056 | /* Print a single line. */ | |
2057 | if (*lineptr == '\t') | |
2058 | { | |
2059 | if (wrap_column) | |
2060 | *wrap_pointer++ = '\t'; | |
2061 | else | |
2062 | fputc_unfiltered ('\t', stream); | |
2063 | /* Shifting right by 3 produces the number of tab stops | |
2064 | we have already passed, and then adding one and | |
c5aa993b | 2065 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
2066 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
2067 | lineptr++; | |
2068 | } | |
2069 | else | |
2070 | { | |
2071 | if (wrap_column) | |
2072 | *wrap_pointer++ = *lineptr; | |
2073 | else | |
c5aa993b | 2074 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
2075 | chars_printed++; |
2076 | lineptr++; | |
2077 | } | |
c5aa993b | 2078 | |
c906108c SS |
2079 | if (chars_printed >= chars_per_line) |
2080 | { | |
2081 | unsigned int save_chars = chars_printed; | |
2082 | ||
2083 | chars_printed = 0; | |
2084 | lines_printed++; | |
2085 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
2086 | if chars_per_line is right, we probably just overflowed |
2087 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
2088 | if (wrap_column) |
2089 | fputc_unfiltered ('\n', stream); | |
2090 | ||
2091 | /* Possible new page. */ | |
2092 | if (lines_printed >= lines_per_page - 1) | |
2093 | prompt_for_continue (); | |
2094 | ||
581e13c1 | 2095 | /* Now output indentation and wrapped string. */ |
c906108c SS |
2096 | if (wrap_column) |
2097 | { | |
2098 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
2099 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
2100 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
2101 | /* FIXME, this strlen is what prevents wrap_indent from |
2102 | containing tabs. However, if we recurse to print it | |
2103 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 2104 | longer than (the user settable) chars_per_line. |
c906108c SS |
2105 | Note also that this can set chars_printed > chars_per_line |
2106 | if we are printing a long string. */ | |
2107 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 2108 | + (save_chars - wrap_column); |
c906108c SS |
2109 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
2110 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
2111 | wrap_column = 0; /* And disable fancy wrap */ |
2112 | } | |
c906108c SS |
2113 | } |
2114 | } | |
2115 | ||
2116 | if (*lineptr == '\n') | |
2117 | { | |
2118 | chars_printed = 0; | |
3e43a32a MS |
2119 | wrap_here ((char *) 0); /* Spit out chars, cancel |
2120 | further wraps. */ | |
c906108c SS |
2121 | lines_printed++; |
2122 | fputc_unfiltered ('\n', stream); | |
2123 | lineptr++; | |
2124 | } | |
2125 | } | |
2126 | } | |
2127 | ||
2128 | void | |
fba45db2 | 2129 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
2130 | { |
2131 | fputs_maybe_filtered (linebuffer, stream, 1); | |
2132 | } | |
2133 | ||
2134 | int | |
fba45db2 | 2135 | putchar_unfiltered (int c) |
c906108c | 2136 | { |
11cf8741 | 2137 | char buf = c; |
e0627e85 | 2138 | |
d9fcf2fb | 2139 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
2140 | return c; |
2141 | } | |
2142 | ||
d1f4cff8 AC |
2143 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
2144 | May return nonlocally. */ | |
2145 | ||
2146 | int | |
2147 | putchar_filtered (int c) | |
2148 | { | |
2149 | return fputc_filtered (c, gdb_stdout); | |
2150 | } | |
2151 | ||
c906108c | 2152 | int |
fba45db2 | 2153 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2154 | { |
11cf8741 | 2155 | char buf = c; |
e0627e85 | 2156 | |
d9fcf2fb | 2157 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2158 | return c; |
2159 | } | |
2160 | ||
2161 | int | |
fba45db2 | 2162 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2163 | { |
2164 | char buf[2]; | |
2165 | ||
2166 | buf[0] = c; | |
2167 | buf[1] = 0; | |
2168 | fputs_filtered (buf, stream); | |
2169 | return c; | |
2170 | } | |
2171 | ||
2172 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2173 | characters in printable fashion. */ | |
2174 | ||
2175 | void | |
fba45db2 | 2176 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2177 | { |
2178 | int ch; | |
2179 | ||
2180 | /* Print prefix and suffix after each line. */ | |
2181 | static int new_line = 1; | |
2182 | static int return_p = 0; | |
2183 | static char *prev_prefix = ""; | |
2184 | static char *prev_suffix = ""; | |
2185 | ||
2186 | if (*string == '\n') | |
2187 | return_p = 0; | |
2188 | ||
2189 | /* If the prefix is changing, print the previous suffix, a new line, | |
2190 | and the new prefix. */ | |
c5aa993b | 2191 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2192 | { |
9846de1b JM |
2193 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2194 | fputs_unfiltered ("\n", gdb_stdlog); | |
2195 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2196 | } |
2197 | ||
2198 | /* Print prefix if we printed a newline during the previous call. */ | |
2199 | if (new_line) | |
2200 | { | |
2201 | new_line = 0; | |
9846de1b | 2202 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2203 | } |
2204 | ||
2205 | prev_prefix = prefix; | |
2206 | prev_suffix = suffix; | |
2207 | ||
2208 | /* Output characters in a printable format. */ | |
2209 | while ((ch = *string++) != '\0') | |
2210 | { | |
2211 | switch (ch) | |
c5aa993b | 2212 | { |
c906108c SS |
2213 | default: |
2214 | if (isprint (ch)) | |
9846de1b | 2215 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2216 | |
2217 | else | |
9846de1b | 2218 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2219 | break; |
2220 | ||
c5aa993b JM |
2221 | case '\\': |
2222 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2223 | break; | |
2224 | case '\b': | |
2225 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2226 | break; | |
2227 | case '\f': | |
2228 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2229 | break; | |
2230 | case '\n': | |
2231 | new_line = 1; | |
2232 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2233 | break; | |
2234 | case '\r': | |
2235 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2236 | break; | |
2237 | case '\t': | |
2238 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2239 | break; | |
2240 | case '\v': | |
2241 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2242 | break; | |
2243 | } | |
c906108c SS |
2244 | |
2245 | return_p = ch == '\r'; | |
2246 | } | |
2247 | ||
2248 | /* Print suffix if we printed a newline. */ | |
2249 | if (new_line) | |
2250 | { | |
9846de1b JM |
2251 | fputs_unfiltered (suffix, gdb_stdlog); |
2252 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2253 | } |
2254 | } | |
2255 | ||
2256 | ||
2257 | /* Print a variable number of ARGS using format FORMAT. If this | |
2258 | information is going to put the amount written (since the last call | |
2259 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2260 | call prompt_for_continue to get the users permision to continue. | |
2261 | ||
2262 | Unlike fprintf, this function does not return a value. | |
2263 | ||
2264 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2265 | fprintf (takes a stream to write on), and printf (the usual). | |
2266 | ||
2267 | Note also that a longjmp to top level may occur in this routine | |
2268 | (since prompt_for_continue may do so) so this routine should not be | |
2269 | called when cleanups are not in place. */ | |
2270 | ||
2271 | static void | |
fba45db2 KB |
2272 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2273 | va_list args, int filter) | |
c906108c SS |
2274 | { |
2275 | char *linebuffer; | |
2276 | struct cleanup *old_cleanups; | |
2277 | ||
e623b504 | 2278 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2279 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2280 | fputs_maybe_filtered (linebuffer, stream, filter); |
2281 | do_cleanups (old_cleanups); | |
2282 | } | |
2283 | ||
2284 | ||
2285 | void | |
fba45db2 | 2286 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2287 | { |
2288 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2289 | } | |
2290 | ||
2291 | void | |
fba45db2 | 2292 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2293 | { |
2294 | char *linebuffer; | |
2295 | struct cleanup *old_cleanups; | |
2296 | ||
e623b504 | 2297 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2298 | old_cleanups = make_cleanup (xfree, linebuffer); |
75feb17d DJ |
2299 | if (debug_timestamp && stream == gdb_stdlog) |
2300 | { | |
dcb07cfa | 2301 | using namespace std::chrono; |
6e5abd65 | 2302 | int len, need_nl; |
75feb17d | 2303 | |
dcb07cfa PA |
2304 | steady_clock::time_point now = steady_clock::now (); |
2305 | seconds s = duration_cast<seconds> (now.time_since_epoch ()); | |
2306 | microseconds us = duration_cast<microseconds> (now.time_since_epoch () - s); | |
6e5abd65 PA |
2307 | |
2308 | len = strlen (linebuffer); | |
2309 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); | |
2310 | ||
dcb07cfa PA |
2311 | std::string timestamp = string_printf ("%ld.%06ld %s%s", |
2312 | (long) s.count (), | |
2313 | (long) us.count (), | |
2314 | linebuffer, need_nl ? "\n": ""); | |
2315 | fputs_unfiltered (timestamp.c_str (), stream); | |
75feb17d | 2316 | } |
6e5abd65 PA |
2317 | else |
2318 | fputs_unfiltered (linebuffer, stream); | |
c906108c SS |
2319 | do_cleanups (old_cleanups); |
2320 | } | |
2321 | ||
2322 | void | |
fba45db2 | 2323 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2324 | { |
2325 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2326 | } | |
2327 | ||
2328 | void | |
fba45db2 | 2329 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2330 | { |
2331 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2332 | } | |
2333 | ||
c906108c | 2334 | void |
8731e58e | 2335 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2336 | { |
2337 | va_list args; | |
e0627e85 | 2338 | |
c906108c | 2339 | va_start (args, format); |
c906108c SS |
2340 | vfprintf_filtered (stream, format, args); |
2341 | va_end (args); | |
2342 | } | |
2343 | ||
c906108c | 2344 | void |
8731e58e | 2345 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2346 | { |
2347 | va_list args; | |
e0627e85 | 2348 | |
c906108c | 2349 | va_start (args, format); |
c906108c SS |
2350 | vfprintf_unfiltered (stream, format, args); |
2351 | va_end (args); | |
2352 | } | |
2353 | ||
2354 | /* Like fprintf_filtered, but prints its result indented. | |
2355 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2356 | ||
c906108c | 2357 | void |
8731e58e AC |
2358 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2359 | ...) | |
c906108c SS |
2360 | { |
2361 | va_list args; | |
e0627e85 | 2362 | |
c906108c | 2363 | va_start (args, format); |
c906108c SS |
2364 | print_spaces_filtered (spaces, stream); |
2365 | ||
2366 | vfprintf_filtered (stream, format, args); | |
2367 | va_end (args); | |
2368 | } | |
2369 | ||
2370 | ||
c906108c | 2371 | void |
8731e58e | 2372 | printf_filtered (const char *format, ...) |
c906108c SS |
2373 | { |
2374 | va_list args; | |
e0627e85 | 2375 | |
c906108c | 2376 | va_start (args, format); |
c906108c SS |
2377 | vfprintf_filtered (gdb_stdout, format, args); |
2378 | va_end (args); | |
2379 | } | |
2380 | ||
2381 | ||
c906108c | 2382 | void |
8731e58e | 2383 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2384 | { |
2385 | va_list args; | |
e0627e85 | 2386 | |
c906108c | 2387 | va_start (args, format); |
c906108c SS |
2388 | vfprintf_unfiltered (gdb_stdout, format, args); |
2389 | va_end (args); | |
2390 | } | |
2391 | ||
2392 | /* Like printf_filtered, but prints it's result indented. | |
2393 | Called as printfi_filtered (spaces, format, ...); */ | |
2394 | ||
c906108c | 2395 | void |
8731e58e | 2396 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2397 | { |
2398 | va_list args; | |
e0627e85 | 2399 | |
c906108c | 2400 | va_start (args, format); |
c906108c SS |
2401 | print_spaces_filtered (spaces, gdb_stdout); |
2402 | vfprintf_filtered (gdb_stdout, format, args); | |
2403 | va_end (args); | |
2404 | } | |
2405 | ||
2406 | /* Easy -- but watch out! | |
2407 | ||
2408 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2409 | This one doesn't, and had better not! */ | |
2410 | ||
2411 | void | |
fba45db2 | 2412 | puts_filtered (const char *string) |
c906108c SS |
2413 | { |
2414 | fputs_filtered (string, gdb_stdout); | |
2415 | } | |
2416 | ||
2417 | void | |
fba45db2 | 2418 | puts_unfiltered (const char *string) |
c906108c SS |
2419 | { |
2420 | fputs_unfiltered (string, gdb_stdout); | |
2421 | } | |
2422 | ||
2423 | /* Return a pointer to N spaces and a null. The pointer is good | |
2424 | until the next call to here. */ | |
2425 | char * | |
fba45db2 | 2426 | n_spaces (int n) |
c906108c | 2427 | { |
392a587b JM |
2428 | char *t; |
2429 | static char *spaces = 0; | |
2430 | static int max_spaces = -1; | |
c906108c SS |
2431 | |
2432 | if (n > max_spaces) | |
2433 | { | |
2434 | if (spaces) | |
b8c9b27d | 2435 | xfree (spaces); |
c5aa993b JM |
2436 | spaces = (char *) xmalloc (n + 1); |
2437 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2438 | *--t = ' '; |
2439 | spaces[n] = '\0'; | |
2440 | max_spaces = n; | |
2441 | } | |
2442 | ||
2443 | return spaces + max_spaces - n; | |
2444 | } | |
2445 | ||
2446 | /* Print N spaces. */ | |
2447 | void | |
fba45db2 | 2448 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2449 | { |
2450 | fputs_filtered (n_spaces (n), stream); | |
2451 | } | |
2452 | \f | |
4a351cef | 2453 | /* C++/ObjC demangler stuff. */ |
c906108c | 2454 | |
389e51db AC |
2455 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2456 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2457 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2458 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2459 | |
2460 | void | |
0d5cff50 | 2461 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2462 | enum language lang, int arg_mode) |
c906108c SS |
2463 | { |
2464 | char *demangled; | |
2465 | ||
2466 | if (name != NULL) | |
2467 | { | |
2468 | /* If user wants to see raw output, no problem. */ | |
2469 | if (!demangle) | |
2470 | { | |
2471 | fputs_filtered (name, stream); | |
2472 | } | |
2473 | else | |
2474 | { | |
9a3d7dfd | 2475 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2476 | fputs_filtered (demangled ? demangled : name, stream); |
2477 | if (demangled != NULL) | |
2478 | { | |
b8c9b27d | 2479 | xfree (demangled); |
c906108c SS |
2480 | } |
2481 | } | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2486 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2487 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2488 | |
c906108c SS |
2489 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2490 | This "feature" is useful when searching for matching C++ function names | |
2491 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
581e13c1 | 2492 | function). */ |
c906108c SS |
2493 | |
2494 | int | |
fba45db2 | 2495 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2496 | { |
2497 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2498 | { | |
2499 | while (isspace (*string1)) | |
2500 | { | |
2501 | string1++; | |
2502 | } | |
2503 | while (isspace (*string2)) | |
2504 | { | |
2505 | string2++; | |
2506 | } | |
559a7a62 JK |
2507 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2508 | break; | |
2509 | if (case_sensitivity == case_sensitive_off | |
2510 | && (tolower ((unsigned char) *string1) | |
2511 | != tolower ((unsigned char) *string2))) | |
2512 | break; | |
c906108c SS |
2513 | if (*string1 != '\0') |
2514 | { | |
2515 | string1++; | |
2516 | string2++; | |
2517 | } | |
2518 | } | |
2519 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2520 | } | |
2de7ced7 | 2521 | |
0fe19209 DC |
2522 | /* This is like strcmp except that it ignores whitespace and treats |
2523 | '(' as the first non-NULL character in terms of ordering. Like | |
2524 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2525 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2526 | according to that ordering. | |
2527 | ||
2528 | If a list is sorted according to this function and if you want to | |
2529 | find names in the list that match some fixed NAME according to | |
2530 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2531 | where this function would put NAME. | |
2532 | ||
559a7a62 JK |
2533 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2534 | may choose it during later lookup. Therefore this function always sorts | |
2535 | primarily case-insensitively and secondarily case-sensitively. | |
2536 | ||
0fe19209 DC |
2537 | Here are some examples of why using strcmp to sort is a bad idea: |
2538 | ||
2539 | Whitespace example: | |
2540 | ||
2541 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2542 | we try to do a search for "foo<char*>", strcmp will locate this | |
2543 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2544 | will start looking at strings beginning with "goo", and will never | |
2545 | see the correct match of "foo<char *>". | |
2546 | ||
2547 | Parenthesis example: | |
2548 | ||
2549 | In practice, this is less like to be an issue, but I'll give it a | |
2550 | shot. Let's assume that '$' is a legitimate character to occur in | |
2551 | symbols. (Which may well even be the case on some systems.) Then | |
2552 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2553 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2554 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2555 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2556 | "foo") is false, so it won't proceed to the actual match of | |
2557 | "foo(int)" with "foo". */ | |
2558 | ||
2559 | int | |
2560 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2561 | { | |
559a7a62 JK |
2562 | const char *saved_string1 = string1, *saved_string2 = string2; |
2563 | enum case_sensitivity case_pass = case_sensitive_off; | |
2564 | ||
2565 | for (;;) | |
0fe19209 | 2566 | { |
b11b1f88 JK |
2567 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2568 | Provide stub characters if we are already at the end of one of the | |
2569 | strings. */ | |
2570 | char c1 = 'X', c2 = 'X'; | |
2571 | ||
2572 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2573 | { |
b11b1f88 JK |
2574 | while (isspace (*string1)) |
2575 | string1++; | |
2576 | while (isspace (*string2)) | |
2577 | string2++; | |
2578 | ||
559a7a62 JK |
2579 | switch (case_pass) |
2580 | { | |
2581 | case case_sensitive_off: | |
2582 | c1 = tolower ((unsigned char) *string1); | |
2583 | c2 = tolower ((unsigned char) *string2); | |
2584 | break; | |
2585 | case case_sensitive_on: | |
b11b1f88 JK |
2586 | c1 = *string1; |
2587 | c2 = *string2; | |
559a7a62 JK |
2588 | break; |
2589 | } | |
b11b1f88 JK |
2590 | if (c1 != c2) |
2591 | break; | |
2592 | ||
2593 | if (*string1 != '\0') | |
2594 | { | |
2595 | string1++; | |
2596 | string2++; | |
2597 | } | |
0fe19209 | 2598 | } |
b11b1f88 JK |
2599 | |
2600 | switch (*string1) | |
0fe19209 | 2601 | { |
b11b1f88 JK |
2602 | /* Characters are non-equal unless they're both '\0'; we want to |
2603 | make sure we get the comparison right according to our | |
2604 | comparison in the cases where one of them is '\0' or '('. */ | |
2605 | case '\0': | |
2606 | if (*string2 == '\0') | |
559a7a62 | 2607 | break; |
b11b1f88 JK |
2608 | else |
2609 | return -1; | |
2610 | case '(': | |
2611 | if (*string2 == '\0') | |
2612 | return 1; | |
2613 | else | |
2614 | return -1; | |
2615 | default: | |
2616 | if (*string2 == '\0' || *string2 == '(') | |
2617 | return 1; | |
559a7a62 JK |
2618 | else if (c1 > c2) |
2619 | return 1; | |
2620 | else if (c1 < c2) | |
2621 | return -1; | |
2622 | /* PASSTHRU */ | |
0fe19209 | 2623 | } |
559a7a62 JK |
2624 | |
2625 | if (case_pass == case_sensitive_on) | |
2626 | return 0; | |
2627 | ||
2628 | /* Otherwise the strings were equal in case insensitive way, make | |
2629 | a more fine grained comparison in a case sensitive way. */ | |
2630 | ||
2631 | case_pass = case_sensitive_on; | |
2632 | string1 = saved_string1; | |
2633 | string2 = saved_string2; | |
0fe19209 | 2634 | } |
0fe19209 DC |
2635 | } |
2636 | ||
2de7ced7 DJ |
2637 | /* A simple comparison function with opposite semantics to strcmp. */ |
2638 | ||
2639 | int | |
2640 | streq (const char *lhs, const char *rhs) | |
2641 | { | |
2642 | return !strcmp (lhs, rhs); | |
2643 | } | |
c906108c | 2644 | \f |
c5aa993b | 2645 | |
c906108c | 2646 | /* |
c5aa993b JM |
2647 | ** subset_compare() |
2648 | ** Answer whether string_to_compare is a full or partial match to | |
2649 | ** template_string. The partial match must be in sequence starting | |
2650 | ** at index 0. | |
2651 | */ | |
c906108c | 2652 | int |
fba45db2 | 2653 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2654 | { |
2655 | int match; | |
e0627e85 | 2656 | |
8731e58e AC |
2657 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2658 | && strlen (string_to_compare) <= strlen (template_string)) | |
2659 | match = | |
61012eef | 2660 | (startswith (template_string, string_to_compare)); |
7a292a7a SS |
2661 | else |
2662 | match = 0; | |
2663 | return match; | |
2664 | } | |
c906108c | 2665 | |
75feb17d DJ |
2666 | static void |
2667 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2668 | struct cmd_list_element *c, const char *value) | |
2669 | { | |
3e43a32a MS |
2670 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2671 | value); | |
75feb17d | 2672 | } |
c906108c | 2673 | \f |
c5aa993b | 2674 | |
c906108c | 2675 | void |
fba45db2 | 2676 | initialize_utils (void) |
c906108c | 2677 | { |
35096d9d | 2678 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2679 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2680 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2681 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2682 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2683 | set_width_command, |
920d2a44 | 2684 | show_chars_per_line, |
35096d9d AC |
2685 | &setlist, &showlist); |
2686 | ||
2687 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2688 | Set number of lines in a page for GDB output pagination."), _("\ |
2689 | Show number of lines in a page for GDB output pagination."), _("\ | |
2690 | This affects the number of lines after which GDB will pause\n\ | |
2691 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2692 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2693 | set_height_command, |
920d2a44 | 2694 | show_lines_per_page, |
35096d9d | 2695 | &setlist, &showlist); |
c5aa993b | 2696 | |
5bf193a2 AC |
2697 | add_setshow_boolean_cmd ("pagination", class_support, |
2698 | &pagination_enabled, _("\ | |
77dec115 EZ |
2699 | Set state of GDB output pagination."), _("\ |
2700 | Show state of GDB output pagination."), _("\ | |
2701 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2702 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2703 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2704 | NULL, |
920d2a44 | 2705 | show_pagination_enabled, |
5bf193a2 | 2706 | &setlist, &showlist); |
4261bedc | 2707 | |
5bf193a2 AC |
2708 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2709 | &sevenbit_strings, _("\ | |
2710 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2711 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2712 | NULL, | |
920d2a44 | 2713 | show_sevenbit_strings, |
5bf193a2 AC |
2714 | &setprintlist, &showprintlist); |
2715 | ||
75feb17d DJ |
2716 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2717 | &debug_timestamp, _("\ | |
2718 | Set timestamping of debugging messages."), _("\ | |
2719 | Show timestamping of debugging messages."), _("\ | |
2720 | When set, debugging messages will be marked with seconds and microseconds."), | |
2721 | NULL, | |
2722 | show_debug_timestamp, | |
2723 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2724 | } |
2725 | ||
66bf4b3a | 2726 | const char * |
5af949e3 | 2727 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2728 | { |
2729 | /* Truncate address to the size of a target address, avoiding shifts | |
2730 | larger or equal than the width of a CORE_ADDR. The local | |
2731 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2732 | when it won't occur. */ |
66bf4b3a AC |
2733 | /* NOTE: This assumes that the significant address information is |
2734 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2735 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2736 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2737 | ||
5af949e3 | 2738 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2739 | |
2740 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2741 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2742 | return hex_string (addr); | |
2743 | } | |
2744 | ||
f1310107 TJB |
2745 | /* This function is described in "defs.h". */ |
2746 | ||
2747 | const char * | |
2748 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2749 | { | |
2750 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2751 | ||
2752 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2753 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2754 | ||
2755 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2756 | that returns the language localized string formatted to a width | |
2757 | based on gdbarch_addr_bit. */ | |
2758 | if (addr_bit <= 32) | |
2759 | return hex_string_custom (address, 8); | |
2760 | else | |
2761 | return hex_string_custom (address, 16); | |
2762 | } | |
2763 | ||
8e3b41a9 JK |
2764 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2765 | ||
2766 | hashval_t | |
2767 | core_addr_hash (const void *ap) | |
2768 | { | |
19ba03f4 | 2769 | const CORE_ADDR *addrp = (const CORE_ADDR *) ap; |
8e3b41a9 JK |
2770 | |
2771 | return *addrp; | |
2772 | } | |
2773 | ||
2774 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2775 | ||
2776 | int | |
2777 | core_addr_eq (const void *ap, const void *bp) | |
2778 | { | |
19ba03f4 SM |
2779 | const CORE_ADDR *addr_ap = (const CORE_ADDR *) ap; |
2780 | const CORE_ADDR *addr_bp = (const CORE_ADDR *) bp; | |
8e3b41a9 JK |
2781 | |
2782 | return *addr_ap == *addr_bp; | |
2783 | } | |
2784 | ||
03dd37c3 AC |
2785 | /* Convert a string back into a CORE_ADDR. */ |
2786 | CORE_ADDR | |
2787 | string_to_core_addr (const char *my_string) | |
2788 | { | |
2789 | CORE_ADDR addr = 0; | |
9544c605 | 2790 | |
03dd37c3 AC |
2791 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2792 | { | |
ced572fe | 2793 | /* Assume that it is in hex. */ |
03dd37c3 | 2794 | int i; |
5d502164 | 2795 | |
03dd37c3 AC |
2796 | for (i = 2; my_string[i] != '\0'; i++) |
2797 | { | |
2798 | if (isdigit (my_string[i])) | |
2799 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2800 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2801 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2802 | else | |
63f06803 | 2803 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2804 | } |
2805 | } | |
2806 | else | |
2807 | { | |
2808 | /* Assume that it is in decimal. */ | |
2809 | int i; | |
5d502164 | 2810 | |
03dd37c3 AC |
2811 | for (i = 0; my_string[i] != '\0'; i++) |
2812 | { | |
2813 | if (isdigit (my_string[i])) | |
2814 | addr = (my_string[i] - '0') + (addr * 10); | |
2815 | else | |
63f06803 | 2816 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2817 | } |
2818 | } | |
9544c605 | 2819 | |
03dd37c3 AC |
2820 | return addr; |
2821 | } | |
58d370e0 TT |
2822 | |
2823 | char * | |
2824 | gdb_realpath (const char *filename) | |
2825 | { | |
0fa9473f JB |
2826 | /* On most hosts, we rely on canonicalize_file_name to compute |
2827 | the FILENAME's realpath. | |
2828 | ||
2829 | But the situation is slightly more complex on Windows, due to some | |
2830 | versions of GCC which were reported to generate paths where | |
2831 | backlashes (the directory separator) were doubled. For instance: | |
2832 | c:\\some\\double\\slashes\\dir | |
2833 | ... instead of ... | |
2834 | c:\some\double\slashes\dir | |
2835 | Those double-slashes were getting in the way when comparing paths, | |
2836 | for instance when trying to insert a breakpoint as follow: | |
2837 | (gdb) b c:/some/double/slashes/dir/foo.c:4 | |
2838 | No source file named c:/some/double/slashes/dir/foo.c:4. | |
2839 | (gdb) b c:\some\double\slashes\dir\foo.c:4 | |
2840 | No source file named c:\some\double\slashes\dir\foo.c:4. | |
2841 | To prevent this from happening, we need this function to always | |
2842 | strip those extra backslashes. While canonicalize_file_name does | |
2843 | perform this simplification, it only works when the path is valid. | |
2844 | Since the simplification would be useful even if the path is not | |
2845 | valid (one can always set a breakpoint on a file, even if the file | |
2846 | does not exist locally), we rely instead on GetFullPathName to | |
2847 | perform the canonicalization. */ | |
2848 | ||
9c5e4386 JB |
2849 | #if defined (_WIN32) |
2850 | { | |
2851 | char buf[MAX_PATH]; | |
2852 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2853 | ||
0fa9473f JB |
2854 | /* The file system is case-insensitive but case-preserving. |
2855 | So it is important we do not lowercase the path. Otherwise, | |
2856 | we might not be able to display the original casing in a given | |
2857 | path. */ | |
9c5e4386 JB |
2858 | if (len > 0 && len < MAX_PATH) |
2859 | return xstrdup (buf); | |
2860 | } | |
abbffc89 YQ |
2861 | #else |
2862 | { | |
2863 | char *rp = canonicalize_file_name (filename); | |
2864 | ||
2865 | if (rp != NULL) | |
2866 | return rp; | |
2867 | } | |
9c5e4386 JB |
2868 | #endif |
2869 | ||
70d35819 AC |
2870 | /* This system is a lost cause, just dup the buffer. */ |
2871 | return xstrdup (filename); | |
58d370e0 | 2872 | } |
303c8ebd | 2873 | |
4856b6bc JK |
2874 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2875 | by gdb_realpath. */ | |
2876 | ||
2877 | char * | |
2878 | gdb_realpath_keepfile (const char *filename) | |
2879 | { | |
2880 | const char *base_name = lbasename (filename); | |
2881 | char *dir_name; | |
2882 | char *real_path; | |
2883 | char *result; | |
2884 | ||
2885 | /* Extract the basename of filename, and return immediately | |
2886 | a copy of filename if it does not contain any directory prefix. */ | |
2887 | if (base_name == filename) | |
2888 | return xstrdup (filename); | |
2889 | ||
224c3ddb | 2890 | dir_name = (char *) alloca ((size_t) (base_name - filename + 2)); |
4856b6bc JK |
2891 | /* Allocate enough space to store the dir_name + plus one extra |
2892 | character sometimes needed under Windows (see below), and | |
2893 | then the closing \000 character. */ | |
2894 | strncpy (dir_name, filename, base_name - filename); | |
2895 | dir_name[base_name - filename] = '\000'; | |
2896 | ||
2897 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2898 | /* We need to be careful when filename is of the form 'd:foo', which | |
2899 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2900 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2901 | { | |
2902 | dir_name[2] = '.'; | |
2903 | dir_name[3] = '\000'; | |
2904 | } | |
2905 | #endif | |
2906 | ||
2907 | /* Canonicalize the directory prefix, and build the resulting | |
2908 | filename. If the dirname realpath already contains an ending | |
2909 | directory separator, avoid doubling it. */ | |
2910 | real_path = gdb_realpath (dir_name); | |
2911 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2912 | result = concat (real_path, base_name, (char *) NULL); | |
2913 | else | |
2914 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2915 | ||
2916 | xfree (real_path); | |
2917 | return result; | |
2918 | } | |
2919 | ||
04affae3 JK |
2920 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
2921 | PATH cannot be NULL or the empty string. | |
2922 | This does not resolve symlinks however, use gdb_realpath for that. | |
2923 | Space for the result is allocated with malloc. | |
2924 | If the path is already absolute, it is strdup'd. | |
2925 | If there is a problem computing the absolute path, the path is returned | |
2926 | unchanged (still strdup'd). */ | |
2927 | ||
2928 | char * | |
2929 | gdb_abspath (const char *path) | |
2930 | { | |
2931 | gdb_assert (path != NULL && path[0] != '\0'); | |
2932 | ||
2933 | if (path[0] == '~') | |
2934 | return tilde_expand (path); | |
2935 | ||
2936 | if (IS_ABSOLUTE_PATH (path)) | |
2937 | return xstrdup (path); | |
2938 | ||
2939 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
2940 | return concat (current_directory, | |
2941 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
2942 | ? "" : SLASH_STRING, | |
2943 | path, (char *) NULL); | |
2944 | } | |
2945 | ||
5b03f266 AC |
2946 | ULONGEST |
2947 | align_up (ULONGEST v, int n) | |
2948 | { | |
2949 | /* Check that N is really a power of two. */ | |
2950 | gdb_assert (n && (n & (n-1)) == 0); | |
2951 | return (v + n - 1) & -n; | |
2952 | } | |
2953 | ||
2954 | ULONGEST | |
2955 | align_down (ULONGEST v, int n) | |
2956 | { | |
2957 | /* Check that N is really a power of two. */ | |
2958 | gdb_assert (n && (n & (n-1)) == 0); | |
2959 | return (v & -n); | |
2960 | } | |
ae5a43e0 DJ |
2961 | |
2962 | /* Allocation function for the libiberty hash table which uses an | |
2963 | obstack. The obstack is passed as DATA. */ | |
2964 | ||
2965 | void * | |
2966 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
2967 | { | |
241fd515 | 2968 | size_t total = size * count; |
ae5a43e0 | 2969 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 2970 | |
ae5a43e0 DJ |
2971 | memset (ptr, 0, total); |
2972 | return ptr; | |
2973 | } | |
2974 | ||
2975 | /* Trivial deallocation function for the libiberty splay tree and hash | |
2976 | table - don't deallocate anything. Rely on later deletion of the | |
2977 | obstack. DATA will be the obstack, although it is not needed | |
2978 | here. */ | |
2979 | ||
2980 | void | |
2981 | dummy_obstack_deallocate (void *object, void *data) | |
2982 | { | |
2983 | return; | |
2984 | } | |
253c8abb | 2985 | |
e1024ff1 DJ |
2986 | /* Simple, portable version of dirname that does not modify its |
2987 | argument. */ | |
2988 | ||
2989 | char * | |
2990 | ldirname (const char *filename) | |
2991 | { | |
2992 | const char *base = lbasename (filename); | |
2993 | char *dirname; | |
2994 | ||
2995 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
2996 | --base; | |
2997 | ||
2998 | if (base == filename) | |
2999 | return NULL; | |
3000 | ||
224c3ddb | 3001 | dirname = (char *) xmalloc (base - filename + 2); |
e1024ff1 DJ |
3002 | memcpy (dirname, filename, base - filename); |
3003 | ||
3004 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
3005 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
3006 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
3007 | && !IS_DIR_SEPARATOR (filename[0])) | |
3008 | dirname[base++ - filename] = '.'; | |
3009 | ||
3010 | dirname[base - filename] = '\0'; | |
3011 | return dirname; | |
3012 | } | |
d1a41061 PP |
3013 | |
3014 | /* Call libiberty's buildargv, and return the result. | |
3015 | If buildargv fails due to out-of-memory, call nomem. | |
3016 | Therefore, the returned value is guaranteed to be non-NULL, | |
3017 | unless the parameter itself is NULL. */ | |
3018 | ||
3019 | char ** | |
3020 | gdb_buildargv (const char *s) | |
3021 | { | |
3022 | char **argv = buildargv (s); | |
e0627e85 | 3023 | |
d1a41061 | 3024 | if (s != NULL && argv == NULL) |
d26e3629 | 3025 | malloc_failure (0); |
d1a41061 PP |
3026 | return argv; |
3027 | } | |
3c16cced | 3028 | |
dc146f7c VP |
3029 | int |
3030 | compare_positive_ints (const void *ap, const void *bp) | |
3031 | { | |
3032 | /* Because we know we're comparing two ints which are positive, | |
3033 | there's no danger of overflow here. */ | |
3034 | return * (int *) ap - * (int *) bp; | |
3035 | } | |
3036 | ||
f8eba3c6 TT |
3037 | /* String compare function for qsort. */ |
3038 | ||
3039 | int | |
3040 | compare_strings (const void *arg1, const void *arg2) | |
3041 | { | |
3042 | const char **s1 = (const char **) arg1; | |
3043 | const char **s2 = (const char **) arg2; | |
3044 | ||
3045 | return strcmp (*s1, *s2); | |
3046 | } | |
3047 | ||
d18b8b7a | 3048 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
3049 | #define AMBIGUOUS_MESS2 \ |
3050 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
3051 | |
3052 | const char * | |
3053 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
3054 | { | |
3055 | char *ret, *retp; | |
3056 | int ret_len; | |
3057 | char **p; | |
3058 | ||
3059 | /* Check if errmsg just need simple return. */ | |
3060 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
3061 | return bfd_errmsg (error_tag); | |
3062 | ||
3063 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
3064 | + strlen (AMBIGUOUS_MESS2); | |
3065 | for (p = matching; *p; p++) | |
3066 | ret_len += strlen (*p) + 1; | |
224c3ddb | 3067 | ret = (char *) xmalloc (ret_len + 1); |
d18b8b7a HZ |
3068 | retp = ret; |
3069 | make_cleanup (xfree, ret); | |
3070 | ||
3071 | strcpy (retp, bfd_errmsg (error_tag)); | |
3072 | retp += strlen (retp); | |
3073 | ||
3074 | strcpy (retp, AMBIGUOUS_MESS1); | |
3075 | retp += strlen (retp); | |
3076 | ||
3077 | for (p = matching; *p; p++) | |
3078 | { | |
3079 | sprintf (retp, " %s", *p); | |
3080 | retp += strlen (retp); | |
3081 | } | |
3082 | xfree (matching); | |
3083 | ||
3084 | strcpy (retp, AMBIGUOUS_MESS2); | |
3085 | ||
3086 | return ret; | |
3087 | } | |
3088 | ||
74164c56 JK |
3089 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
3090 | ||
3091 | int | |
c0939df1 | 3092 | parse_pid_to_attach (const char *args) |
74164c56 JK |
3093 | { |
3094 | unsigned long pid; | |
3095 | char *dummy; | |
3096 | ||
3097 | if (!args) | |
3098 | error_no_arg (_("process-id to attach")); | |
3099 | ||
c0939df1 | 3100 | dummy = (char *) args; |
74164c56 JK |
3101 | pid = strtoul (args, &dummy, 0); |
3102 | /* Some targets don't set errno on errors, grrr! */ | |
3103 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
3104 | error (_("Illegal process-id: %s."), args); | |
3105 | ||
3106 | return pid; | |
3107 | } | |
3108 | ||
353d1d73 JK |
3109 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
3110 | ||
3111 | static void | |
3112 | do_bpstat_clear_actions_cleanup (void *unused) | |
3113 | { | |
3114 | bpstat_clear_actions (); | |
3115 | } | |
3116 | ||
3117 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
3118 | discard_cleanups if no exception is caught. */ | |
3119 | ||
3120 | struct cleanup * | |
3121 | make_bpstat_clear_actions_cleanup (void) | |
3122 | { | |
3123 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
3124 | } | |
3125 | ||
df15bd07 JK |
3126 | /* Check for GCC >= 4.x according to the symtab->producer string. Return minor |
3127 | version (x) of 4.x in such case. If it is not GCC or it is GCC older than | |
3128 | 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */ | |
3129 | ||
3130 | int | |
3131 | producer_is_gcc_ge_4 (const char *producer) | |
3132 | { | |
df15bd07 | 3133 | int major, minor; |
b1ffba5a MW |
3134 | |
3135 | if (! producer_is_gcc (producer, &major, &minor)) | |
3136 | return -1; | |
df15bd07 JK |
3137 | if (major < 4) |
3138 | return -1; | |
3139 | if (major > 4) | |
3140 | return INT_MAX; | |
3141 | return minor; | |
3142 | } | |
3143 | ||
cc7039d3 JB |
3144 | /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR |
3145 | and MINOR versions when not NULL. Returns zero if the given PRODUCER | |
b1ffba5a MW |
3146 | is NULL or it isn't GCC. */ |
3147 | ||
cc7039d3 | 3148 | int |
b1ffba5a | 3149 | producer_is_gcc (const char *producer, int *major, int *minor) |
38360086 MW |
3150 | { |
3151 | const char *cs; | |
38360086 | 3152 | |
61012eef | 3153 | if (producer != NULL && startswith (producer, "GNU ")) |
38360086 | 3154 | { |
b1ffba5a MW |
3155 | int maj, min; |
3156 | ||
3157 | if (major == NULL) | |
3158 | major = &maj; | |
3159 | if (minor == NULL) | |
3160 | minor = &min; | |
3161 | ||
9c37b5ae | 3162 | /* Skip any identifier after "GNU " - such as "C11" or "C++". |
38360086 MW |
3163 | A full producer string might look like: |
3164 | "GNU C 4.7.2" | |
3165 | "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..." | |
3166 | "GNU C++14 5.0.0 20150123 (experimental)" | |
3167 | */ | |
3168 | cs = &producer[strlen ("GNU ")]; | |
3169 | while (*cs && !isspace (*cs)) | |
3170 | cs++; | |
3171 | if (*cs && isspace (*cs)) | |
3172 | cs++; | |
b1ffba5a | 3173 | if (sscanf (cs, "%d.%d", major, minor) == 2) |
cc7039d3 | 3174 | return 1; |
38360086 MW |
3175 | } |
3176 | ||
3177 | /* Not recognized as GCC. */ | |
cc7039d3 | 3178 | return 0; |
38360086 MW |
3179 | } |
3180 | ||
e4ab2fad JK |
3181 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
3182 | ||
3183 | static void | |
3184 | do_free_char_ptr_vec (void *arg) | |
3185 | { | |
19ba03f4 | 3186 | VEC (char_ptr) *char_ptr_vec = (VEC (char_ptr) *) arg; |
e4ab2fad JK |
3187 | |
3188 | free_char_ptr_vec (char_ptr_vec); | |
3189 | } | |
3190 | ||
3191 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
3192 | final VEC_free for CHAR_PTR_VEC itself. | |
3193 | ||
3194 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
3195 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
3196 | this function does not (cannot) clear the pointer. */ | |
3197 | ||
3198 | struct cleanup * | |
3199 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
3200 | { | |
3201 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
3202 | } | |
3203 | ||
6dea1fbd JK |
3204 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3205 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3206 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3207 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3208 | |
3209 | void | |
3210 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3211 | { | |
3212 | char *string = *stringp, *s; | |
3213 | const size_t from_len = strlen (from); | |
3214 | const size_t to_len = strlen (to); | |
3215 | ||
3216 | for (s = string;;) | |
3217 | { | |
3218 | s = strstr (s, from); | |
3219 | if (s == NULL) | |
3220 | break; | |
3221 | ||
1564a261 JK |
3222 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3223 | || s[-1] == DIRNAME_SEPARATOR) | |
3224 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3225 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3226 | { |
3227 | char *string_new; | |
3228 | ||
224c3ddb SM |
3229 | string_new |
3230 | = (char *) xrealloc (string, (strlen (string) + to_len + 1)); | |
6dea1fbd JK |
3231 | |
3232 | /* Relocate the current S pointer. */ | |
3233 | s = s - string + string_new; | |
3234 | string = string_new; | |
3235 | ||
3236 | /* Replace from by to. */ | |
3237 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3238 | memcpy (s, to, to_len); | |
3239 | ||
3240 | s += to_len; | |
3241 | } | |
3242 | else | |
3243 | s++; | |
3244 | } | |
3245 | ||
3246 | *stringp = string; | |
3247 | } | |
3248 | ||
0b6cb71e DE |
3249 | #ifdef HAVE_WAITPID |
3250 | ||
3251 | #ifdef SIGALRM | |
3252 | ||
3253 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3254 | ||
3255 | static void | |
3256 | sigalrm_handler (int signo) | |
3257 | { | |
3258 | /* Nothing to do. */ | |
3259 | } | |
3260 | ||
3261 | #endif | |
3262 | ||
3263 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3264 | TIMEOUT is the time to stop waiting in seconds. | |
3265 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3266 | Returns PID if it was successfully waited for, otherwise -1. | |
3267 | ||
3268 | Timeouts are currently implemented with alarm and SIGALRM. | |
3269 | If the host does not support them, this waits "forever". | |
3270 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3271 | ||
3272 | pid_t | |
3273 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3274 | { | |
3275 | pid_t waitpid_result; | |
3276 | ||
3277 | gdb_assert (pid > 0); | |
3278 | gdb_assert (timeout >= 0); | |
3279 | ||
3280 | if (timeout > 0) | |
3281 | { | |
3282 | #ifdef SIGALRM | |
3283 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3284 | struct sigaction sa, old_sa; | |
3285 | ||
3286 | sa.sa_handler = sigalrm_handler; | |
3287 | sigemptyset (&sa.sa_mask); | |
3288 | sa.sa_flags = 0; | |
3289 | sigaction (SIGALRM, &sa, &old_sa); | |
3290 | #else | |
a40805d4 | 3291 | sighandler_t ofunc; |
0b6cb71e | 3292 | |
a40805d4 | 3293 | ofunc = signal (SIGALRM, sigalrm_handler); |
0b6cb71e DE |
3294 | #endif |
3295 | ||
3296 | alarm (timeout); | |
3297 | #endif | |
3298 | ||
3299 | waitpid_result = waitpid (pid, status, 0); | |
3300 | ||
3301 | #ifdef SIGALRM | |
3302 | alarm (0); | |
3303 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3304 | sigaction (SIGALRM, &old_sa, NULL); | |
3305 | #else | |
3306 | signal (SIGALRM, ofunc); | |
3307 | #endif | |
3308 | #endif | |
3309 | } | |
3310 | else | |
3311 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3312 | ||
3313 | if (waitpid_result == pid) | |
3314 | return pid; | |
3315 | else | |
3316 | return -1; | |
3317 | } | |
3318 | ||
3319 | #endif /* HAVE_WAITPID */ | |
3320 | ||
202cbf1c JK |
3321 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3322 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3323 | ||
3324 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3325 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3326 | ||
3327 | int | |
3328 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3329 | { | |
3330 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3331 | ||
3332 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3333 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3334 | ||
3335 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3336 | { | |
3337 | char *pattern_slash, *string_slash; | |
3338 | ||
3339 | /* Replace '\' by '/' in both strings. */ | |
3340 | ||
0ae1c716 | 3341 | pattern_slash = (char *) alloca (strlen (pattern) + 1); |
202cbf1c JK |
3342 | strcpy (pattern_slash, pattern); |
3343 | pattern = pattern_slash; | |
3344 | for (; *pattern_slash != 0; pattern_slash++) | |
3345 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3346 | *pattern_slash = '/'; | |
3347 | ||
0ae1c716 | 3348 | string_slash = (char *) alloca (strlen (string) + 1); |
202cbf1c JK |
3349 | strcpy (string_slash, string); |
3350 | string = string_slash; | |
3351 | for (; *string_slash != 0; string_slash++) | |
3352 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3353 | *string_slash = '/'; | |
3354 | } | |
3355 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3356 | ||
3357 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3358 | flags |= FNM_CASEFOLD; | |
3359 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3360 | ||
3361 | return fnmatch (pattern, string, flags); | |
3362 | } | |
3363 | ||
cce0e923 DE |
3364 | /* Return the number of path elements in PATH. |
3365 | / = 1 | |
3366 | /foo = 2 | |
3367 | /foo/ = 2 | |
3368 | foo/bar = 2 | |
3369 | foo/ = 1 */ | |
3370 | ||
3371 | int | |
3372 | count_path_elements (const char *path) | |
3373 | { | |
3374 | int count = 0; | |
3375 | const char *p = path; | |
3376 | ||
3377 | if (HAS_DRIVE_SPEC (p)) | |
3378 | { | |
3379 | p = STRIP_DRIVE_SPEC (p); | |
3380 | ++count; | |
3381 | } | |
3382 | ||
3383 | while (*p != '\0') | |
3384 | { | |
3385 | if (IS_DIR_SEPARATOR (*p)) | |
3386 | ++count; | |
3387 | ++p; | |
3388 | } | |
3389 | ||
3390 | /* Backup one if last character is /, unless it's the only one. */ | |
3391 | if (p > path + 1 && IS_DIR_SEPARATOR (p[-1])) | |
3392 | --count; | |
3393 | ||
3394 | /* Add one for the file name, if present. */ | |
3395 | if (p > path && !IS_DIR_SEPARATOR (p[-1])) | |
3396 | ++count; | |
3397 | ||
3398 | return count; | |
3399 | } | |
3400 | ||
3401 | /* Remove N leading path elements from PATH. | |
3402 | N must be non-negative. | |
3403 | If PATH has more than N path elements then return NULL. | |
3404 | If PATH has exactly N path elements then return "". | |
3405 | See count_path_elements for a description of how we do the counting. */ | |
3406 | ||
3407 | const char * | |
3408 | strip_leading_path_elements (const char *path, int n) | |
3409 | { | |
3410 | int i = 0; | |
3411 | const char *p = path; | |
3412 | ||
3413 | gdb_assert (n >= 0); | |
3414 | ||
3415 | if (n == 0) | |
3416 | return p; | |
3417 | ||
3418 | if (HAS_DRIVE_SPEC (p)) | |
3419 | { | |
3420 | p = STRIP_DRIVE_SPEC (p); | |
3421 | ++i; | |
3422 | } | |
3423 | ||
3424 | while (i < n) | |
3425 | { | |
3426 | while (*p != '\0' && !IS_DIR_SEPARATOR (*p)) | |
3427 | ++p; | |
3428 | if (*p == '\0') | |
3429 | { | |
3430 | if (i + 1 == n) | |
3431 | return ""; | |
3432 | return NULL; | |
3433 | } | |
3434 | ++p; | |
3435 | ++i; | |
3436 | } | |
3437 | ||
3438 | return p; | |
3439 | } | |
3440 | ||
2c0b251b PA |
3441 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3442 | extern initialize_file_ftype _initialize_utils; | |
3443 | ||
3c16cced PA |
3444 | void |
3445 | _initialize_utils (void) | |
3446 | { | |
3447 | add_internal_problem_command (&internal_error_problem); | |
3448 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3449 | add_internal_problem_command (&demangler_warning_problem); |
3c16cced | 3450 | } |