Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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" |
15652511 | 68 | #include "job-control.h" |
14278e1f | 69 | #include "common/selftest.h" |
8626589c | 70 | |
a3828db0 | 71 | #if !HAVE_DECL_MALLOC |
5ac79d78 | 72 | extern PTR malloc (); /* ARI: PTR */ |
3c37485b | 73 | #endif |
a3828db0 | 74 | #if !HAVE_DECL_REALLOC |
5ac79d78 | 75 | extern PTR realloc (); /* ARI: PTR */ |
0e52036f | 76 | #endif |
a3828db0 | 77 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
78 | extern void free (); |
79 | #endif | |
81b8eb80 | 80 | |
9a4105ab | 81 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
82 | |
83 | /* Prototypes for local functions */ | |
84 | ||
d9fcf2fb | 85 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 86 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 87 | |
d9fcf2fb | 88 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void prompt_for_continue (void); |
c906108c | 91 | |
eb0d3137 | 92 | static void set_screen_size (void); |
a14ed312 | 93 | static void set_width (void); |
c906108c | 94 | |
260c0b2a DE |
95 | /* Time spent in prompt_for_continue in the currently executing command |
96 | waiting for user to respond. | |
97 | Initialized in make_command_stats_cleanup. | |
98 | Modified in prompt_for_continue and defaulted_query. | |
99 | Used in report_command_stats. */ | |
100 | ||
dcb07cfa | 101 | static std::chrono::steady_clock::duration prompt_for_continue_wait_time; |
260c0b2a | 102 | |
75feb17d DJ |
103 | /* A flag indicating whether to timestamp debugging messages. */ |
104 | ||
105 | static int debug_timestamp = 0; | |
106 | ||
c906108c SS |
107 | /* Nonzero means that strings with character values >0x7F should be printed |
108 | as octal escapes. Zero means just print the value (e.g. it's an | |
109 | international character, and the terminal or window can cope.) */ | |
110 | ||
111 | int sevenbit_strings = 0; | |
920d2a44 AC |
112 | static void |
113 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
114 | struct cmd_list_element *c, const char *value) | |
115 | { | |
3e43a32a MS |
116 | fprintf_filtered (file, _("Printing of 8-bit characters " |
117 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
118 | value); |
119 | } | |
c906108c | 120 | |
c906108c SS |
121 | /* String to be printed before warning messages, if any. */ |
122 | ||
69bbf465 | 123 | const char *warning_pre_print = "\nwarning: "; |
c906108c SS |
124 | |
125 | int pagination_enabled = 1; | |
920d2a44 AC |
126 | static void |
127 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
128 | struct cmd_list_element *c, const char *value) | |
129 | { | |
130 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
131 | } | |
132 | ||
c906108c | 133 | \f |
c27f5738 | 134 | /* Cleanup utilities. |
c5aa993b | 135 | |
c27f5738 DE |
136 | These are not defined in cleanups.c (nor declared in cleanups.h) |
137 | because while they use the "cleanup API" they are not part of the | |
138 | "cleanup API". */ | |
7a292a7a | 139 | |
7b90c3f9 JB |
140 | static void |
141 | do_free_section_addr_info (void *arg) | |
142 | { | |
19ba03f4 | 143 | free_section_addr_info ((struct section_addr_info *) arg); |
7b90c3f9 JB |
144 | } |
145 | ||
146 | struct cleanup * | |
147 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
148 | { | |
e0088cfd | 149 | return make_cleanup (do_free_section_addr_info, addrs); |
7b90c3f9 JB |
150 | } |
151 | ||
0b080f59 VP |
152 | struct restore_integer_closure |
153 | { | |
154 | int *variable; | |
155 | int value; | |
156 | }; | |
157 | ||
158 | static void | |
159 | restore_integer (void *p) | |
160 | { | |
19ba03f4 SM |
161 | struct restore_integer_closure *closure |
162 | = (struct restore_integer_closure *) p; | |
e0627e85 | 163 | |
0b080f59 VP |
164 | *(closure->variable) = closure->value; |
165 | } | |
7b90c3f9 | 166 | |
3e43a32a MS |
167 | /* Remember the current value of *VARIABLE and make it restored when |
168 | the cleanup is run. */ | |
5da1313b | 169 | |
c906108c | 170 | struct cleanup * |
0b080f59 VP |
171 | make_cleanup_restore_integer (int *variable) |
172 | { | |
8d749320 | 173 | struct restore_integer_closure *c = XNEW (struct restore_integer_closure); |
e0627e85 | 174 | |
0b080f59 VP |
175 | c->variable = variable; |
176 | c->value = *variable; | |
177 | ||
e0088cfd | 178 | return make_cleanup_dtor (restore_integer, (void *) c, xfree); |
0b080f59 VP |
179 | } |
180 | ||
3e43a32a MS |
181 | /* Remember the current value of *VARIABLE and make it restored when |
182 | the cleanup is run. */ | |
5da1313b JK |
183 | |
184 | struct cleanup * | |
185 | make_cleanup_restore_uinteger (unsigned int *variable) | |
186 | { | |
187 | return make_cleanup_restore_integer ((int *) variable); | |
188 | } | |
189 | ||
c0edd9ed JK |
190 | /* Helper for make_cleanup_unpush_target. */ |
191 | ||
192 | static void | |
193 | do_unpush_target (void *arg) | |
194 | { | |
19ba03f4 | 195 | struct target_ops *ops = (struct target_ops *) arg; |
c0edd9ed JK |
196 | |
197 | unpush_target (ops); | |
198 | } | |
199 | ||
200 | /* Return a new cleanup that unpushes OPS. */ | |
201 | ||
202 | struct cleanup * | |
203 | make_cleanup_unpush_target (struct target_ops *ops) | |
204 | { | |
e0088cfd | 205 | return make_cleanup (do_unpush_target, ops); |
c0edd9ed JK |
206 | } |
207 | ||
028d0ed5 TJB |
208 | /* Helper for make_cleanup_value_free_to_mark. */ |
209 | ||
210 | static void | |
211 | do_value_free_to_mark (void *value) | |
212 | { | |
213 | value_free_to_mark ((struct value *) value); | |
214 | } | |
215 | ||
216 | /* Free all values allocated since MARK was obtained by value_mark | |
217 | (except for those released) when the cleanup is run. */ | |
218 | ||
219 | struct cleanup * | |
220 | make_cleanup_value_free_to_mark (struct value *mark) | |
221 | { | |
e0088cfd | 222 | return make_cleanup (do_value_free_to_mark, mark); |
028d0ed5 TJB |
223 | } |
224 | ||
72fc29ff TT |
225 | /* Helper for make_cleanup_value_free. */ |
226 | ||
227 | static void | |
228 | do_value_free (void *value) | |
229 | { | |
19ba03f4 | 230 | value_free ((struct value *) value); |
72fc29ff TT |
231 | } |
232 | ||
233 | /* Free VALUE. */ | |
234 | ||
235 | struct cleanup * | |
236 | make_cleanup_value_free (struct value *value) | |
237 | { | |
e0088cfd | 238 | return make_cleanup (do_value_free, value); |
72fc29ff TT |
239 | } |
240 | ||
c906108c SS |
241 | /* This function is useful for cleanups. |
242 | Do | |
243 | ||
c5aa993b JM |
244 | foo = xmalloc (...); |
245 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
246 | |
247 | to arrange to free the object thus allocated. */ | |
248 | ||
249 | void | |
2f9429ae | 250 | free_current_contents (void *ptr) |
c906108c | 251 | { |
19ba03f4 | 252 | void **location = (void **) ptr; |
e0627e85 | 253 | |
e2f9c474 | 254 | if (location == NULL) |
8e65ff28 | 255 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 256 | _("free_current_contents: NULL pointer")); |
2f9429ae | 257 | if (*location != NULL) |
e2f9c474 | 258 | { |
b8c9b27d | 259 | xfree (*location); |
e2f9c474 AC |
260 | *location = NULL; |
261 | } | |
c906108c | 262 | } |
c906108c | 263 | \f |
c5aa993b | 264 | |
8731e58e | 265 | |
f5a96129 AC |
266 | /* Print a warning message. The first argument STRING is the warning |
267 | message, used as an fprintf format string, the second is the | |
268 | va_list of arguments for that string. A warning is unfiltered (not | |
269 | paginated) so that the user does not need to page through each | |
270 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
271 | |
272 | void | |
f5a96129 | 273 | vwarning (const char *string, va_list args) |
c906108c | 274 | { |
9a4105ab AC |
275 | if (deprecated_warning_hook) |
276 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
277 | else |
278 | { | |
c5ac1540 PA |
279 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
280 | ||
0d2f5c07 | 281 | if (target_supports_terminal_ours ()) |
c5ac1540 PA |
282 | { |
283 | make_cleanup_restore_target_terminal (); | |
284 | target_terminal_ours_for_output (); | |
285 | } | |
0d2f5c07 GB |
286 | if (filtered_printing_initialized ()) |
287 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
288 | gdb_flush (gdb_stdout); |
289 | if (warning_pre_print) | |
306d9ac5 | 290 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
291 | vfprintf_unfiltered (gdb_stderr, string, args); |
292 | fprintf_unfiltered (gdb_stderr, "\n"); | |
c5ac1540 PA |
293 | |
294 | do_cleanups (old_chain); | |
f5a96129 | 295 | } |
c906108c SS |
296 | } |
297 | ||
c906108c SS |
298 | /* Print an error message and return to command level. |
299 | The first argument STRING is the error message, used as a fprintf string, | |
300 | and the remaining args are passed as arguments to it. */ | |
301 | ||
c25c4a8b | 302 | void |
4ce44c66 JM |
303 | verror (const char *string, va_list args) |
304 | { | |
6b1b7650 | 305 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
306 | } |
307 | ||
c25c4a8b | 308 | void |
d7e74731 | 309 | error_stream (const string_file &stream) |
2acceee2 | 310 | { |
d7e74731 | 311 | error (("%s"), stream.c_str ()); |
2acceee2 | 312 | } |
c906108c | 313 | |
2437fd32 GB |
314 | /* Emit a message and abort. */ |
315 | ||
316 | static void ATTRIBUTE_NORETURN | |
317 | abort_with_message (const char *msg) | |
318 | { | |
72542b8e | 319 | if (current_ui == NULL) |
2437fd32 GB |
320 | fputs (msg, stderr); |
321 | else | |
322 | fputs_unfiltered (msg, gdb_stderr); | |
323 | ||
324 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
325 | } | |
326 | ||
7991dee7 JK |
327 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
328 | ||
eae7090b | 329 | void |
7991dee7 JK |
330 | dump_core (void) |
331 | { | |
332 | #ifdef HAVE_SETRLIMIT | |
333 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
334 | ||
335 | setrlimit (RLIMIT_CORE, &rlim); | |
336 | #endif /* HAVE_SETRLIMIT */ | |
337 | ||
338 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
339 | } | |
340 | ||
3e43a32a | 341 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
342 | function. Returns zero if GDB cannot or should not dump core. |
343 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
344 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 345 | |
eae7090b GB |
346 | int |
347 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
348 | { |
349 | #ifdef HAVE_GETRLIMIT | |
350 | struct rlimit rlim; | |
351 | ||
352 | /* Be quiet and assume we can dump if an error is returned. */ | |
353 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
354 | return 1; | |
355 | ||
eae7090b | 356 | switch (limit_kind) |
7991dee7 | 357 | { |
eae7090b GB |
358 | case LIMIT_CUR: |
359 | if (rlim.rlim_cur == 0) | |
360 | return 0; | |
361 | ||
362 | case LIMIT_MAX: | |
363 | if (rlim.rlim_max == 0) | |
364 | return 0; | |
7991dee7 JK |
365 | } |
366 | #endif /* HAVE_GETRLIMIT */ | |
367 | ||
368 | return 1; | |
369 | } | |
370 | ||
eae7090b GB |
371 | /* Print a warning that we cannot dump core. */ |
372 | ||
373 | void | |
374 | warn_cant_dump_core (const char *reason) | |
375 | { | |
376 | fprintf_unfiltered (gdb_stderr, | |
377 | _("%s\nUnable to dump core, use `ulimit -c" | |
378 | " unlimited' before executing GDB next time.\n"), | |
379 | reason); | |
380 | } | |
381 | ||
382 | /* Check whether GDB will be able to dump core using the dump_core | |
383 | function, and print a warning if we cannot. */ | |
384 | ||
385 | static int | |
386 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
387 | const char *reason) | |
388 | { | |
389 | int core_dump_allowed = can_dump_core (limit_kind); | |
390 | ||
391 | if (!core_dump_allowed) | |
392 | warn_cant_dump_core (reason); | |
393 | ||
394 | return core_dump_allowed; | |
395 | } | |
396 | ||
3c16cced PA |
397 | /* Allow the user to configure the debugger behavior with respect to |
398 | what to do when an internal problem is detected. */ | |
399 | ||
400 | const char internal_problem_ask[] = "ask"; | |
401 | const char internal_problem_yes[] = "yes"; | |
402 | const char internal_problem_no[] = "no"; | |
40478521 | 403 | static const char *const internal_problem_modes[] = |
3c16cced PA |
404 | { |
405 | internal_problem_ask, | |
406 | internal_problem_yes, | |
407 | internal_problem_no, | |
408 | NULL | |
409 | }; | |
3c16cced | 410 | |
581e13c1 | 411 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
412 | if they want to continue, dump core, or just exit. Return |
413 | something to indicate a quit. */ | |
c906108c | 414 | |
dec43320 | 415 | struct internal_problem |
c906108c | 416 | { |
dec43320 | 417 | const char *name; |
57fcfb1b | 418 | int user_settable_should_quit; |
3c16cced | 419 | const char *should_quit; |
57fcfb1b | 420 | int user_settable_should_dump_core; |
3c16cced | 421 | const char *should_dump_core; |
dec43320 AC |
422 | }; |
423 | ||
424 | /* Report a problem, internal to GDB, to the user. Once the problem | |
425 | has been reported, and assuming GDB didn't quit, the caller can | |
426 | either allow execution to resume or throw an error. */ | |
427 | ||
a0b31db1 | 428 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 429 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 430 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 431 | { |
dec43320 | 432 | static int dejavu; |
375fc983 | 433 | int quit_p; |
7be570e7 | 434 | int dump_core_p; |
714b1282 | 435 | char *reason; |
48be7c1b | 436 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
c906108c | 437 | |
dec43320 | 438 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
439 | { |
440 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 441 | |
714b1282 AC |
442 | switch (dejavu) |
443 | { | |
444 | case 0: | |
445 | dejavu = 1; | |
446 | break; | |
447 | case 1: | |
448 | dejavu = 2; | |
2437fd32 | 449 | abort_with_message (msg); |
714b1282 AC |
450 | default: |
451 | dejavu = 3; | |
bf1d7d9c JB |
452 | /* Newer GLIBC versions put the warn_unused_result attribute |
453 | on write, but this is one of those rare cases where | |
454 | ignoring the return value is correct. Casting to (void) | |
455 | does not fix this problem. This is the solution suggested | |
456 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
457 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 458 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
459 | exit (1); |
460 | } | |
461 | } | |
c906108c | 462 | |
714b1282 AC |
463 | /* Create a string containing the full error/warning message. Need |
464 | to call query with this full string, as otherwize the reason | |
465 | (error/warning) and question become separated. Format using a | |
466 | style similar to a compiler error message. Include extra detail | |
467 | so that the user knows that they are living on the edge. */ | |
468 | { | |
469 | char *msg; | |
5d502164 | 470 | |
e623b504 | 471 | msg = xstrvprintf (fmt, ap); |
3e43a32a MS |
472 | reason = xstrprintf ("%s:%d: %s: %s\n" |
473 | "A problem internal to GDB has been detected,\n" | |
474 | "further debugging may prove unreliable.", | |
475 | file, line, problem->name, msg); | |
714b1282 AC |
476 | xfree (msg); |
477 | make_cleanup (xfree, reason); | |
478 | } | |
7be570e7 | 479 | |
2437fd32 | 480 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
72542b8e | 481 | if (current_ui == NULL) |
2437fd32 GB |
482 | { |
483 | fputs (reason, stderr); | |
484 | abort_with_message ("\n"); | |
485 | } | |
486 | ||
487 | /* Try to get the message out and at the start of a new line. */ | |
488 | if (target_supports_terminal_ours ()) | |
c5ac1540 PA |
489 | { |
490 | make_cleanup_restore_target_terminal (); | |
491 | target_terminal_ours_for_output (); | |
492 | } | |
2437fd32 GB |
493 | if (filtered_printing_initialized ()) |
494 | begin_line (); | |
495 | ||
196a707b | 496 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
497 | if (problem->should_quit != internal_problem_ask |
498 | || !confirm | |
499 | || !filtered_printing_initialized ()) | |
196a707b GB |
500 | fprintf_unfiltered (gdb_stderr, "%s\n", reason); |
501 | ||
3c16cced | 502 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 503 | { |
dec43320 | 504 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
505 | this lessens the likelihood of GDB going into an infinite |
506 | loop. */ | |
2437fd32 | 507 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 508 | quit_p = 1; |
26bb68be PP |
509 | else |
510 | quit_p = query (_("%s\nQuit this debugging session? "), reason); | |
dec43320 | 511 | } |
3c16cced PA |
512 | else if (problem->should_quit == internal_problem_yes) |
513 | quit_p = 1; | |
514 | else if (problem->should_quit == internal_problem_no) | |
515 | quit_p = 0; | |
516 | else | |
517 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 518 | |
add6c04d GB |
519 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
520 | if (REPORT_BUGS_TO[0]) | |
521 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
522 | REPORT_BUGS_TO); | |
523 | fputs_unfiltered ("\n\n", gdb_stderr); | |
524 | ||
3c16cced | 525 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 526 | { |
eae7090b | 527 | if (!can_dump_core_warn (LIMIT_MAX, reason)) |
7991dee7 | 528 | dump_core_p = 0; |
2437fd32 GB |
529 | else if (!filtered_printing_initialized ()) |
530 | dump_core_p = 1; | |
7991dee7 JK |
531 | else |
532 | { | |
533 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
534 | `dropping' so that it is easier to see that something went | |
535 | wrong in GDB. */ | |
536 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); | |
537 | } | |
dec43320 | 538 | } |
3c16cced | 539 | else if (problem->should_dump_core == internal_problem_yes) |
eae7090b | 540 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason); |
3c16cced PA |
541 | else if (problem->should_dump_core == internal_problem_no) |
542 | dump_core_p = 0; | |
543 | else | |
544 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 545 | |
375fc983 | 546 | if (quit_p) |
7be570e7 JM |
547 | { |
548 | if (dump_core_p) | |
7991dee7 | 549 | dump_core (); |
375fc983 AC |
550 | else |
551 | exit (1); | |
7be570e7 JM |
552 | } |
553 | else | |
554 | { | |
555 | if (dump_core_p) | |
375fc983 | 556 | { |
9b265ec2 | 557 | #ifdef HAVE_WORKING_FORK |
375fc983 | 558 | if (fork () == 0) |
7991dee7 | 559 | dump_core (); |
9b265ec2 | 560 | #endif |
375fc983 | 561 | } |
7be570e7 | 562 | } |
96baa820 JM |
563 | |
564 | dejavu = 0; | |
48be7c1b | 565 | do_cleanups (cleanup); |
dec43320 AC |
566 | } |
567 | ||
568 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 569 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
570 | }; |
571 | ||
c25c4a8b | 572 | void |
8731e58e | 573 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
574 | { |
575 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 576 | throw_quit (_("Command aborted.")); |
c906108c SS |
577 | } |
578 | ||
dec43320 | 579 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 580 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
581 | }; |
582 | ||
583 | void | |
8731e58e | 584 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
585 | { |
586 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
587 | } | |
588 | ||
57fcfb1b GB |
589 | static struct internal_problem demangler_warning_problem = { |
590 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
591 | }; | |
592 | ||
593 | void | |
594 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
595 | { | |
596 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
597 | } | |
598 | ||
599 | void | |
600 | demangler_warning (const char *file, int line, const char *string, ...) | |
601 | { | |
602 | va_list ap; | |
603 | ||
604 | va_start (ap, string); | |
605 | demangler_vwarning (file, line, string, ap); | |
606 | va_end (ap); | |
607 | } | |
608 | ||
3c16cced PA |
609 | /* Dummy functions to keep add_prefix_cmd happy. */ |
610 | ||
611 | static void | |
612 | set_internal_problem_cmd (char *args, int from_tty) | |
613 | { | |
614 | } | |
615 | ||
616 | static void | |
617 | show_internal_problem_cmd (char *args, int from_tty) | |
618 | { | |
619 | } | |
620 | ||
621 | /* When GDB reports an internal problem (error or warning) it gives | |
622 | the user the opportunity to quit GDB and/or create a core file of | |
623 | the current debug session. This function registers a few commands | |
624 | that make it possible to specify that GDB should always or never | |
625 | quit or create a core file, without asking. The commands look | |
626 | like: | |
627 | ||
628 | maint set PROBLEM-NAME quit ask|yes|no | |
629 | maint show PROBLEM-NAME quit | |
630 | maint set PROBLEM-NAME corefile ask|yes|no | |
631 | maint show PROBLEM-NAME corefile | |
632 | ||
633 | Where PROBLEM-NAME is currently "internal-error" or | |
634 | "internal-warning". */ | |
635 | ||
636 | static void | |
637 | add_internal_problem_command (struct internal_problem *problem) | |
638 | { | |
639 | struct cmd_list_element **set_cmd_list; | |
640 | struct cmd_list_element **show_cmd_list; | |
641 | char *set_doc; | |
642 | char *show_doc; | |
643 | ||
8d749320 SM |
644 | set_cmd_list = XNEW (struct cmd_list_element *); |
645 | show_cmd_list = XNEW (struct cmd_list_element *); | |
3c16cced PA |
646 | *set_cmd_list = NULL; |
647 | *show_cmd_list = NULL; | |
648 | ||
649 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
650 | problem->name); | |
651 | ||
652 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
653 | problem->name); | |
654 | ||
655 | add_prefix_cmd ((char*) problem->name, | |
656 | class_maintenance, set_internal_problem_cmd, set_doc, | |
657 | set_cmd_list, | |
c4f7c687 MK |
658 | concat ("maintenance set ", problem->name, " ", |
659 | (char *) NULL), | |
3c16cced PA |
660 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
661 | ||
662 | add_prefix_cmd ((char*) problem->name, | |
663 | class_maintenance, show_internal_problem_cmd, show_doc, | |
664 | show_cmd_list, | |
c4f7c687 MK |
665 | concat ("maintenance show ", problem->name, " ", |
666 | (char *) NULL), | |
3c16cced PA |
667 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
668 | ||
57fcfb1b GB |
669 | if (problem->user_settable_should_quit) |
670 | { | |
671 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
672 | "when an %s is detected"), | |
673 | problem->name); | |
674 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
675 | "when an %s is detected"), | |
676 | problem->name); | |
677 | add_setshow_enum_cmd ("quit", class_maintenance, | |
678 | internal_problem_modes, | |
679 | &problem->should_quit, | |
680 | set_doc, | |
681 | show_doc, | |
682 | NULL, /* help_doc */ | |
683 | NULL, /* setfunc */ | |
684 | NULL, /* showfunc */ | |
685 | set_cmd_list, | |
686 | show_cmd_list); | |
687 | ||
688 | xfree (set_doc); | |
689 | xfree (show_doc); | |
690 | } | |
1eefb858 | 691 | |
57fcfb1b GB |
692 | if (problem->user_settable_should_dump_core) |
693 | { | |
694 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
695 | "file of GDB when %s is detected"), | |
696 | problem->name); | |
697 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
698 | "file of GDB when %s is detected"), | |
699 | problem->name); | |
700 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
701 | internal_problem_modes, | |
702 | &problem->should_dump_core, | |
703 | set_doc, | |
704 | show_doc, | |
705 | NULL, /* help_doc */ | |
706 | NULL, /* setfunc */ | |
707 | NULL, /* showfunc */ | |
708 | set_cmd_list, | |
709 | show_cmd_list); | |
710 | ||
711 | xfree (set_doc); | |
712 | xfree (show_doc); | |
713 | } | |
3c16cced PA |
714 | } |
715 | ||
0cf4063e | 716 | /* Return a newly allocated string, containing the PREFIX followed |
18e9961f | 717 | by the system error message for errno (separated by a colon). */ |
0cf4063e | 718 | |
18e9961f | 719 | static std::string |
0cf4063e JB |
720 | perror_string (const char *prefix) |
721 | { | |
722 | char *err; | |
0cf4063e JB |
723 | |
724 | err = safe_strerror (errno); | |
18e9961f | 725 | return std::string (prefix) + ": " + err; |
0cf4063e JB |
726 | } |
727 | ||
c906108c | 728 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
729 | as the file name for which the error was encountered. Use ERRCODE |
730 | for the thrown exception. Then return to command level. */ | |
c906108c | 731 | |
c25c4a8b | 732 | void |
598d3636 | 733 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 734 | { |
18e9961f | 735 | std::string combined = perror_string (string); |
c906108c SS |
736 | |
737 | /* I understand setting these is a matter of taste. Still, some people | |
738 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 739 | unreasonable. */ |
c906108c SS |
740 | bfd_set_error (bfd_error_no_error); |
741 | errno = 0; | |
742 | ||
18e9961f | 743 | throw_error (errcode, _("%s."), combined.c_str ()); |
598d3636 JK |
744 | } |
745 | ||
746 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
747 | ||
748 | void | |
749 | perror_with_name (const char *string) | |
750 | { | |
751 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
752 | } |
753 | ||
7c647d61 JB |
754 | /* Same as perror_with_name except that it prints a warning instead |
755 | of throwing an error. */ | |
756 | ||
757 | void | |
758 | perror_warning_with_name (const char *string) | |
759 | { | |
18e9961f TT |
760 | std::string combined = perror_string (string); |
761 | warning (_("%s"), combined.c_str ()); | |
7c647d61 JB |
762 | } |
763 | ||
c906108c SS |
764 | /* Print the system error message for ERRCODE, and also mention STRING |
765 | as the file name for which the error was encountered. */ | |
766 | ||
767 | void | |
6972bc8b | 768 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
769 | { |
770 | char *err; | |
771 | char *combined; | |
772 | ||
773 | err = safe_strerror (errcode); | |
774 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
775 | strcpy (combined, string); | |
776 | strcat (combined, ": "); | |
777 | strcat (combined, err); | |
778 | ||
779 | /* We want anything which was printed on stdout to come out first, before | |
780 | this message. */ | |
781 | gdb_flush (gdb_stdout); | |
782 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
783 | } | |
784 | ||
785 | /* Control C eventually causes this to be called, at a convenient time. */ | |
786 | ||
787 | void | |
fba45db2 | 788 | quit (void) |
c906108c | 789 | { |
f38d3ad1 PA |
790 | struct ui *ui = current_ui; |
791 | ||
06c868a8 JK |
792 | if (sync_quit_force_run) |
793 | { | |
794 | sync_quit_force_run = 0; | |
268a799a | 795 | quit_force (NULL, 0); |
06c868a8 JK |
796 | } |
797 | ||
7be570e7 JM |
798 | #ifdef __MSDOS__ |
799 | /* No steenking SIGINT will ever be coming our way when the | |
800 | program is resumed. Don't lie. */ | |
2c51604d | 801 | throw_quit ("Quit"); |
7be570e7 | 802 | #else |
c906108c | 803 | if (job_control |
8731e58e AC |
804 | /* If there is no terminal switching for this target, then we can't |
805 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 806 | || !target_supports_terminal_ours ()) |
2c51604d | 807 | throw_quit ("Quit"); |
c906108c | 808 | else |
2c51604d | 809 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 810 | #endif |
c906108c SS |
811 | } |
812 | ||
abc56d60 PA |
813 | /* See defs.h. */ |
814 | ||
815 | void | |
816 | maybe_quit (void) | |
817 | { | |
048094ac | 818 | if (sync_quit_force_run) |
abc56d60 | 819 | quit (); |
048094ac PA |
820 | |
821 | quit_handler (); | |
822 | ||
abc56d60 PA |
823 | if (deprecated_interactive_hook) |
824 | deprecated_interactive_hook (); | |
abc56d60 PA |
825 | } |
826 | ||
c906108c | 827 | \f |
c906108c | 828 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 829 | memory requested in SIZE. */ |
c906108c | 830 | |
c25c4a8b | 831 | void |
d26e3629 | 832 | malloc_failure (long size) |
c906108c SS |
833 | { |
834 | if (size > 0) | |
835 | { | |
8e65ff28 | 836 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 837 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 838 | size); |
c906108c SS |
839 | } |
840 | else | |
841 | { | |
e2e0b3e5 | 842 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
843 | } |
844 | } | |
845 | ||
c906108c SS |
846 | /* My replacement for the read system call. |
847 | Used like `read' but keeps going if `read' returns too soon. */ | |
848 | ||
849 | int | |
fba45db2 | 850 | myread (int desc, char *addr, int len) |
c906108c | 851 | { |
52f0bd74 | 852 | int val; |
c906108c SS |
853 | int orglen = len; |
854 | ||
855 | while (len > 0) | |
856 | { | |
857 | val = read (desc, addr, len); | |
858 | if (val < 0) | |
859 | return val; | |
860 | if (val == 0) | |
861 | return orglen - len; | |
862 | len -= val; | |
863 | addr += val; | |
864 | } | |
865 | return orglen; | |
866 | } | |
d26e3629 | 867 | |
c906108c | 868 | void |
aa1ee363 | 869 | print_spaces (int n, struct ui_file *file) |
c906108c | 870 | { |
392a587b | 871 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
872 | } |
873 | ||
874 | /* Print a host address. */ | |
875 | ||
876 | void | |
b80c3053 | 877 | gdb_print_host_address_1 (const void *addr, struct ui_file *stream) |
c906108c | 878 | { |
ea8992ce | 879 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 880 | } |
7c50a931 DE |
881 | |
882 | /* See utils.h. */ | |
883 | ||
884 | char * | |
885 | make_hex_string (const gdb_byte *data, size_t length) | |
886 | { | |
224c3ddb | 887 | char *result = (char *) xmalloc (length * 2 + 1); |
7c50a931 DE |
888 | char *p; |
889 | size_t i; | |
890 | ||
891 | p = result; | |
892 | for (i = 0; i < length; ++i) | |
dc4d6886 | 893 | p += xsnprintf (p, 3, "%02x", data[i]); |
7c50a931 DE |
894 | *p = '\0'; |
895 | return result; | |
896 | } | |
897 | ||
c906108c | 898 | \f |
c5aa993b | 899 | |
3eb7562a PA |
900 | /* A cleanup that simply calls ui_unregister_input_event_handler. */ |
901 | ||
902 | static void | |
903 | ui_unregister_input_event_handler_cleanup (void *ui) | |
904 | { | |
905 | ui_unregister_input_event_handler ((struct ui *) ui); | |
906 | } | |
907 | ||
908 | /* Set up to handle input. */ | |
909 | ||
910 | static struct cleanup * | |
911 | prepare_to_handle_input (void) | |
912 | { | |
913 | struct cleanup *old_chain; | |
914 | ||
915 | old_chain = make_cleanup_restore_target_terminal (); | |
916 | target_terminal_ours (); | |
917 | ||
918 | ui_register_input_event_handler (current_ui); | |
919 | if (current_ui->prompt_state == PROMPT_BLOCKED) | |
920 | make_cleanup (ui_unregister_input_event_handler_cleanup, current_ui); | |
921 | ||
922 | make_cleanup_override_quit_handler (default_quit_handler); | |
923 | ||
924 | return old_chain; | |
925 | } | |
926 | ||
db1ff28b JK |
927 | \f |
928 | ||
981c7f5a | 929 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 930 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
931 | answer is yes, or default the answer to the specified default |
932 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
933 | default answer, or '\0' for no default. | |
cbdeadca JJ |
934 | CTLSTR is the control string and should end in "? ". It should |
935 | not say how to answer, because we do that. | |
936 | ARGS are the arguments passed along with the CTLSTR argument to | |
937 | printf. */ | |
938 | ||
a0b31db1 | 939 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
940 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
941 | { | |
cbdeadca JJ |
942 | int ans2; |
943 | int retval; | |
944 | int def_value; | |
945 | char def_answer, not_def_answer; | |
a121b7c1 PA |
946 | const char *y_string, *n_string; |
947 | char *question, *prompt; | |
80dbc9fd | 948 | struct cleanup *old_chain; |
cbdeadca JJ |
949 | |
950 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
951 | if (defchar == '\0') |
952 | { | |
953 | def_value = 1; | |
954 | def_answer = 'Y'; | |
955 | not_def_answer = 'N'; | |
956 | y_string = "y"; | |
957 | n_string = "n"; | |
958 | } | |
959 | else if (defchar == 'y') | |
cbdeadca JJ |
960 | { |
961 | def_value = 1; | |
962 | def_answer = 'Y'; | |
963 | not_def_answer = 'N'; | |
964 | y_string = "[y]"; | |
965 | n_string = "n"; | |
966 | } | |
967 | else | |
968 | { | |
969 | def_value = 0; | |
970 | def_answer = 'N'; | |
971 | not_def_answer = 'Y'; | |
972 | y_string = "y"; | |
973 | n_string = "[n]"; | |
974 | } | |
975 | ||
981c7f5a | 976 | /* Automatically answer the default value if the user did not want |
a502cf95 | 977 | prompts or the command was issued with the server prefix. */ |
e360902b | 978 | if (!confirm || server_command) |
981c7f5a DJ |
979 | return def_value; |
980 | ||
981 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 982 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
983 | way, important error messages don't get lost when talking to GDB |
984 | over a pipe. */ | |
268a799a | 985 | if (current_ui->instream != current_ui->stdin_stream |
26a06916 SM |
986 | || !input_interactive_p (current_ui) |
987 | /* Restrict queries to the main UI. */ | |
988 | || current_ui != main_ui) | |
981c7f5a | 989 | { |
3eb7562a PA |
990 | old_chain = make_cleanup_restore_target_terminal (); |
991 | ||
651ce16a | 992 | target_terminal_ours_for_output (); |
981c7f5a DJ |
993 | wrap_here (""); |
994 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
995 | ||
3e43a32a MS |
996 | printf_filtered (_("(%s or %s) [answered %c; " |
997 | "input not from terminal]\n"), | |
981c7f5a DJ |
998 | y_string, n_string, def_answer); |
999 | gdb_flush (gdb_stdout); | |
1000 | ||
651ce16a | 1001 | do_cleanups (old_chain); |
981c7f5a DJ |
1002 | return def_value; |
1003 | } | |
1004 | ||
9a4105ab | 1005 | if (deprecated_query_hook) |
cbdeadca | 1006 | { |
651ce16a | 1007 | int res; |
cbdeadca | 1008 | |
3eb7562a | 1009 | old_chain = make_cleanup_restore_target_terminal (); |
651ce16a PA |
1010 | res = deprecated_query_hook (ctlstr, args); |
1011 | do_cleanups (old_chain); | |
1012 | return res; | |
1013 | } | |
80dbc9fd | 1014 | |
981c7f5a DJ |
1015 | /* Format the question outside of the loop, to avoid reusing args. */ |
1016 | question = xstrvprintf (ctlstr, args); | |
3eb7562a | 1017 | old_chain = make_cleanup (xfree, question); |
588dcc3e PP |
1018 | prompt = xstrprintf (_("%s%s(%s or %s) %s"), |
1019 | annotation_level > 1 ? "\n\032\032pre-query\n" : "", | |
1020 | question, y_string, n_string, | |
1021 | annotation_level > 1 ? "\n\032\032query\n" : ""); | |
80dbc9fd | 1022 | make_cleanup (xfree, prompt); |
981c7f5a | 1023 | |
dcb07cfa PA |
1024 | /* Used to add duration we waited for user to respond to |
1025 | prompt_for_continue_wait_time. */ | |
1026 | using namespace std::chrono; | |
1027 | steady_clock::time_point prompt_started = steady_clock::now (); | |
260c0b2a | 1028 | |
3eb7562a | 1029 | prepare_to_handle_input (); |
651ce16a | 1030 | |
cbdeadca JJ |
1031 | while (1) |
1032 | { | |
588dcc3e | 1033 | char *response, answer; |
cbdeadca | 1034 | |
cbdeadca | 1035 | gdb_flush (gdb_stdout); |
588dcc3e | 1036 | response = gdb_readline_wrapper (prompt); |
cbdeadca | 1037 | |
588dcc3e | 1038 | if (response == NULL) /* C-d */ |
cbdeadca | 1039 | { |
fa3fd85b | 1040 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
1041 | retval = def_value; |
1042 | break; | |
1043 | } | |
588dcc3e PP |
1044 | |
1045 | answer = response[0]; | |
1046 | xfree (response); | |
cbdeadca JJ |
1047 | |
1048 | if (answer >= 'a') | |
1049 | answer -= 040; | |
1050 | /* Check answer. For the non-default, the user must specify | |
1051 | the non-default explicitly. */ | |
1052 | if (answer == not_def_answer) | |
1053 | { | |
1054 | retval = !def_value; | |
1055 | break; | |
1056 | } | |
981c7f5a DJ |
1057 | /* Otherwise, if a default was specified, the user may either |
1058 | specify the required input or have it default by entering | |
1059 | nothing. */ | |
1060 | if (answer == def_answer | |
588dcc3e | 1061 | || (defchar != '\0' && answer == '\0')) |
cbdeadca JJ |
1062 | { |
1063 | retval = def_value; | |
1064 | break; | |
1065 | } | |
1066 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1067 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1068 | y_string, n_string); |
1069 | } | |
1070 | ||
260c0b2a | 1071 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1072 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1073 | |
cbdeadca | 1074 | if (annotation_level > 1) |
a3f17187 | 1075 | printf_filtered (("\n\032\032post-query\n")); |
80dbc9fd | 1076 | do_cleanups (old_chain); |
cbdeadca JJ |
1077 | return retval; |
1078 | } | |
1079 | \f | |
1080 | ||
1081 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1082 | answer is yes, or 0 if answer is defaulted. | |
1083 | Takes three args which are given to printf to print the question. | |
1084 | The first, a control string, should end in "? ". | |
1085 | It should not say how to answer, because we do that. */ | |
1086 | ||
1087 | int | |
1088 | nquery (const char *ctlstr, ...) | |
1089 | { | |
1090 | va_list args; | |
899500d6 | 1091 | int ret; |
cbdeadca JJ |
1092 | |
1093 | va_start (args, ctlstr); | |
899500d6 | 1094 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1095 | va_end (args); |
899500d6 | 1096 | return ret; |
cbdeadca JJ |
1097 | } |
1098 | ||
1099 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1100 | answer is yes, or 1 if answer is defaulted. | |
1101 | Takes three args which are given to printf to print the question. | |
1102 | The first, a control string, should end in "? ". | |
1103 | It should not say how to answer, because we do that. */ | |
1104 | ||
1105 | int | |
1106 | yquery (const char *ctlstr, ...) | |
1107 | { | |
1108 | va_list args; | |
899500d6 | 1109 | int ret; |
cbdeadca JJ |
1110 | |
1111 | va_start (args, ctlstr); | |
899500d6 | 1112 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1113 | va_end (args); |
899500d6 | 1114 | return ret; |
cbdeadca JJ |
1115 | } |
1116 | ||
981c7f5a DJ |
1117 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1118 | Takes three args which are given to printf to print the question. | |
1119 | The first, a control string, should end in "? ". | |
1120 | It should not say how to answer, because we do that. */ | |
1121 | ||
1122 | int | |
1123 | query (const char *ctlstr, ...) | |
1124 | { | |
1125 | va_list args; | |
899500d6 | 1126 | int ret; |
981c7f5a DJ |
1127 | |
1128 | va_start (args, ctlstr); | |
899500d6 | 1129 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1130 | va_end (args); |
899500d6 | 1131 | return ret; |
981c7f5a DJ |
1132 | } |
1133 | ||
6c7a06a3 TT |
1134 | /* A helper for parse_escape that converts a host character to a |
1135 | target character. C is the host character. If conversion is | |
1136 | possible, then the target character is stored in *TARGET_C and the | |
1137 | function returns 1. Otherwise, the function returns 0. */ | |
1138 | ||
1139 | static int | |
f870a310 | 1140 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1141 | { |
6c7a06a3 | 1142 | char the_char = c; |
6c7a06a3 | 1143 | int result = 0; |
234b45d4 | 1144 | |
8268c778 | 1145 | auto_obstack host_data; |
234b45d4 | 1146 | |
f870a310 | 1147 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1148 | (gdb_byte *) &the_char, 1, 1, |
1149 | &host_data, translit_none); | |
6c7a06a3 TT |
1150 | |
1151 | if (obstack_object_size (&host_data) == 1) | |
1152 | { | |
1153 | result = 1; | |
1154 | *target_c = *(char *) obstack_base (&host_data); | |
1155 | } | |
1156 | ||
6c7a06a3 | 1157 | return result; |
234b45d4 KB |
1158 | } |
1159 | ||
c906108c SS |
1160 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1161 | containing a pointer to the string to parse. That pointer | |
1162 | should point to the character after the \. That pointer | |
1163 | is updated past the characters we use. The value of the | |
1164 | escape sequence is returned. | |
1165 | ||
1166 | A negative value means the sequence \ newline was seen, | |
1167 | which is supposed to be equivalent to nothing at all. | |
1168 | ||
1169 | If \ is followed by a null character, we return a negative | |
1170 | value and leave the string pointer pointing at the null character. | |
1171 | ||
1172 | If \ is followed by 000, we return 0 and leave the string pointer | |
1173 | after the zeros. A value of 0 does not mean end of string. */ | |
1174 | ||
1175 | int | |
d7561cbb | 1176 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1177 | { |
581e13c1 | 1178 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1179 | int c = *(*string_ptr)++; |
e0627e85 | 1180 | |
6c7a06a3 TT |
1181 | switch (c) |
1182 | { | |
8731e58e AC |
1183 | case '\n': |
1184 | return -2; | |
1185 | case 0: | |
1186 | (*string_ptr)--; | |
1187 | return 0; | |
8731e58e AC |
1188 | |
1189 | case '0': | |
1190 | case '1': | |
1191 | case '2': | |
1192 | case '3': | |
1193 | case '4': | |
1194 | case '5': | |
1195 | case '6': | |
1196 | case '7': | |
1197 | { | |
6c7a06a3 | 1198 | int i = host_hex_value (c); |
aa1ee363 | 1199 | int count = 0; |
8731e58e AC |
1200 | while (++count < 3) |
1201 | { | |
5cb316ef | 1202 | c = (**string_ptr); |
6c7a06a3 | 1203 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1204 | { |
5cb316ef | 1205 | (*string_ptr)++; |
8731e58e | 1206 | i *= 8; |
6c7a06a3 | 1207 | i += host_hex_value (c); |
8731e58e AC |
1208 | } |
1209 | else | |
1210 | { | |
8731e58e AC |
1211 | break; |
1212 | } | |
1213 | } | |
1214 | return i; | |
1215 | } | |
6c7a06a3 TT |
1216 | |
1217 | case 'a': | |
1218 | c = '\a'; | |
1219 | break; | |
1220 | case 'b': | |
1221 | c = '\b'; | |
1222 | break; | |
1223 | case 'f': | |
1224 | c = '\f'; | |
1225 | break; | |
1226 | case 'n': | |
1227 | c = '\n'; | |
1228 | break; | |
1229 | case 'r': | |
1230 | c = '\r'; | |
1231 | break; | |
1232 | case 't': | |
1233 | c = '\t'; | |
1234 | break; | |
1235 | case 'v': | |
1236 | c = '\v'; | |
1237 | break; | |
1238 | ||
1239 | default: | |
1240 | break; | |
1241 | } | |
1242 | ||
f870a310 | 1243 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1244 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1245 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1246 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1247 | return target_char; |
c906108c SS |
1248 | } |
1249 | \f | |
1250 | /* Print the character C on STREAM as part of the contents of a literal | |
1251 | string whose delimiter is QUOTER. Note that this routine should only | |
f9acce4a | 1252 | be called for printing things which are independent of the language |
6ef284bd SM |
1253 | of the program being debugged. |
1254 | ||
1255 | printchar will normally escape backslashes and instances of QUOTER. If | |
1256 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1257 | As a side effect, if you pass the backslash character as the QUOTER, | |
1258 | printchar will escape backslashes as usual, but not any other quoting | |
1259 | character. */ | |
c906108c | 1260 | |
43e526b9 | 1261 | static void |
74f832da | 1262 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1263 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1264 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1265 | { |
c906108c SS |
1266 | c &= 0xFF; /* Avoid sign bit follies */ |
1267 | ||
c5aa993b JM |
1268 | if (c < 0x20 || /* Low control chars */ |
1269 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1270 | (sevenbit_strings && c >= 0x80)) | |
1271 | { /* high order bit set */ | |
1272 | switch (c) | |
1273 | { | |
1274 | case '\n': | |
43e526b9 | 1275 | do_fputs ("\\n", stream); |
c5aa993b JM |
1276 | break; |
1277 | case '\b': | |
43e526b9 | 1278 | do_fputs ("\\b", stream); |
c5aa993b JM |
1279 | break; |
1280 | case '\t': | |
43e526b9 | 1281 | do_fputs ("\\t", stream); |
c5aa993b JM |
1282 | break; |
1283 | case '\f': | |
43e526b9 | 1284 | do_fputs ("\\f", stream); |
c5aa993b JM |
1285 | break; |
1286 | case '\r': | |
43e526b9 | 1287 | do_fputs ("\\r", stream); |
c5aa993b JM |
1288 | break; |
1289 | case '\033': | |
43e526b9 | 1290 | do_fputs ("\\e", stream); |
c5aa993b JM |
1291 | break; |
1292 | case '\007': | |
43e526b9 | 1293 | do_fputs ("\\a", stream); |
c5aa993b JM |
1294 | break; |
1295 | default: | |
43e526b9 | 1296 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1297 | break; |
1298 | } | |
1299 | } | |
1300 | else | |
1301 | { | |
6ef284bd | 1302 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1303 | do_fputs ("\\", stream); |
1304 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1305 | } |
c906108c | 1306 | } |
43e526b9 JM |
1307 | |
1308 | /* Print the character C on STREAM as part of the contents of a | |
1309 | literal string whose delimiter is QUOTER. Note that these routines | |
1310 | should only be call for printing things which are independent of | |
581e13c1 | 1311 | the language of the program being debugged. */ |
43e526b9 JM |
1312 | |
1313 | void | |
fba45db2 | 1314 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1315 | { |
1316 | while (*str) | |
1317 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1318 | } | |
1319 | ||
1320 | void | |
fba45db2 | 1321 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1322 | { |
1323 | while (*str) | |
1324 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1325 | } | |
1326 | ||
0876f84a DJ |
1327 | void |
1328 | fputstrn_filtered (const char *str, int n, int quoter, | |
1329 | struct ui_file *stream) | |
1330 | { | |
1331 | int i; | |
e0627e85 | 1332 | |
0876f84a DJ |
1333 | for (i = 0; i < n; i++) |
1334 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1335 | } | |
1336 | ||
43e526b9 | 1337 | void |
8731e58e AC |
1338 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1339 | struct ui_file *stream) | |
43e526b9 JM |
1340 | { |
1341 | int i; | |
5d502164 | 1342 | |
43e526b9 JM |
1343 | for (i = 0; i < n; i++) |
1344 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1345 | } | |
c906108c | 1346 | \f |
c5aa993b | 1347 | |
c906108c SS |
1348 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1349 | static unsigned int lines_per_page; | |
920d2a44 AC |
1350 | static void |
1351 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1352 | struct cmd_list_element *c, const char *value) | |
1353 | { | |
3e43a32a MS |
1354 | fprintf_filtered (file, |
1355 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1356 | value); |
1357 | } | |
eb0d3137 | 1358 | |
cbfbd72a | 1359 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1360 | static unsigned int chars_per_line; |
920d2a44 AC |
1361 | static void |
1362 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1363 | struct cmd_list_element *c, const char *value) | |
1364 | { | |
3e43a32a MS |
1365 | fprintf_filtered (file, |
1366 | _("Number of characters gdb thinks " | |
1367 | "are in a line is %s.\n"), | |
920d2a44 AC |
1368 | value); |
1369 | } | |
eb0d3137 | 1370 | |
c906108c SS |
1371 | /* Current count of lines printed on this page, chars on this line. */ |
1372 | static unsigned int lines_printed, chars_printed; | |
1373 | ||
1374 | /* Buffer and start column of buffered text, for doing smarter word- | |
1375 | wrapping. When someone calls wrap_here(), we start buffering output | |
1376 | that comes through fputs_filtered(). If we see a newline, we just | |
1377 | spit it out and forget about the wrap_here(). If we see another | |
1378 | wrap_here(), we spit it out and remember the newer one. If we see | |
1379 | the end of the line, we spit out a newline, the indent, and then | |
1380 | the buffered output. */ | |
1381 | ||
1382 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1383 | are waiting to be output (they have already been counted in chars_printed). | |
1384 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1385 | static char *wrap_buffer; | |
1386 | ||
1387 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1388 | static char *wrap_pointer; | |
1389 | ||
1390 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1391 | is non-zero. */ | |
d2c0eef4 | 1392 | static const char *wrap_indent; |
c906108c SS |
1393 | |
1394 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1395 | is not in effect. */ | |
1396 | static int wrap_column; | |
c906108c | 1397 | \f |
c5aa993b | 1398 | |
26c4b26f | 1399 | /* Initialize the number of lines per page and chars per line. */ |
eb0d3137 | 1400 | |
c906108c | 1401 | void |
fba45db2 | 1402 | init_page_info (void) |
c906108c | 1403 | { |
5da1313b JK |
1404 | if (batch_flag) |
1405 | { | |
1406 | lines_per_page = UINT_MAX; | |
1407 | chars_per_line = UINT_MAX; | |
1408 | } | |
1409 | else | |
c906108c | 1410 | #if defined(TUI) |
5ecb1806 | 1411 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1412 | #endif |
1413 | { | |
eb0d3137 | 1414 | int rows, cols; |
c906108c | 1415 | |
ec145965 EZ |
1416 | #if defined(__GO32__) |
1417 | rows = ScreenRows (); | |
1418 | cols = ScreenCols (); | |
1419 | lines_per_page = rows; | |
1420 | chars_per_line = cols; | |
1421 | #else | |
eb0d3137 MK |
1422 | /* Make sure Readline has initialized its terminal settings. */ |
1423 | rl_reset_terminal (NULL); | |
c906108c | 1424 | |
eb0d3137 MK |
1425 | /* Get the screen size from Readline. */ |
1426 | rl_get_screen_size (&rows, &cols); | |
1427 | lines_per_page = rows; | |
1428 | chars_per_line = cols; | |
c906108c | 1429 | |
1a66331e PM |
1430 | /* Readline should have fetched the termcap entry for us. |
1431 | Only try to use tgetnum function if rl_get_screen_size | |
1432 | did not return a useful value. */ | |
a121b7c1 | 1433 | if (((rows <= 0) && (tgetnum ((char *) "li") < 0)) |
e681cf3f EZ |
1434 | /* Also disable paging if inside Emacs. $EMACS was used |
1435 | before Emacs v25.1, $INSIDE_EMACS is used since then. */ | |
1436 | || getenv ("EMACS") || getenv ("INSIDE_EMACS")) | |
eb0d3137 | 1437 | { |
1a66331e PM |
1438 | /* The number of lines per page is not mentioned in the terminal |
1439 | description or EMACS evironment variable is set. This probably | |
1440 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1441 | lines_per_page = UINT_MAX; |
1442 | } | |
c906108c | 1443 | |
c906108c | 1444 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1445 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1446 | lines_per_page = UINT_MAX; |
eb0d3137 | 1447 | #endif |
ec145965 | 1448 | } |
eb0d3137 | 1449 | |
24b73f8e PP |
1450 | /* We handle SIGWINCH ourselves. */ |
1451 | rl_catch_sigwinch = 0; | |
1452 | ||
eb0d3137 | 1453 | set_screen_size (); |
c5aa993b | 1454 | set_width (); |
c906108c SS |
1455 | } |
1456 | ||
2437fd32 GB |
1457 | /* Return nonzero if filtered printing is initialized. */ |
1458 | int | |
1459 | filtered_printing_initialized (void) | |
1460 | { | |
1461 | return wrap_buffer != NULL; | |
1462 | } | |
1463 | ||
5da1313b JK |
1464 | /* Helper for make_cleanup_restore_page_info. */ |
1465 | ||
1466 | static void | |
1467 | do_restore_page_info_cleanup (void *arg) | |
1468 | { | |
1469 | set_screen_size (); | |
1470 | set_width (); | |
1471 | } | |
1472 | ||
1473 | /* Provide cleanup for restoring the terminal size. */ | |
1474 | ||
1475 | struct cleanup * | |
1476 | make_cleanup_restore_page_info (void) | |
1477 | { | |
1478 | struct cleanup *back_to; | |
1479 | ||
1480 | back_to = make_cleanup (do_restore_page_info_cleanup, NULL); | |
1481 | make_cleanup_restore_uinteger (&lines_per_page); | |
1482 | make_cleanup_restore_uinteger (&chars_per_line); | |
1483 | ||
1484 | return back_to; | |
1485 | } | |
1486 | ||
1487 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. | |
1488 | Provide cleanup for restoring the original state. */ | |
1489 | ||
1490 | struct cleanup * | |
1491 | set_batch_flag_and_make_cleanup_restore_page_info (void) | |
1492 | { | |
1493 | struct cleanup *back_to = make_cleanup_restore_page_info (); | |
1494 | ||
1495 | make_cleanup_restore_integer (&batch_flag); | |
1496 | batch_flag = 1; | |
1497 | init_page_info (); | |
1498 | ||
1499 | return back_to; | |
1500 | } | |
1501 | ||
eb0d3137 MK |
1502 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1503 | ||
1504 | static void | |
1505 | set_screen_size (void) | |
1506 | { | |
1507 | int rows = lines_per_page; | |
1508 | int cols = chars_per_line; | |
1509 | ||
1510 | if (rows <= 0) | |
1511 | rows = INT_MAX; | |
1512 | ||
1513 | if (cols <= 0) | |
0caa462c | 1514 | cols = INT_MAX; |
eb0d3137 MK |
1515 | |
1516 | /* Update Readline's idea of the terminal size. */ | |
1517 | rl_set_screen_size (rows, cols); | |
1518 | } | |
1519 | ||
1520 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1521 | CHARS_PER_LINE. */ | |
1522 | ||
c906108c | 1523 | static void |
fba45db2 | 1524 | set_width (void) |
c906108c SS |
1525 | { |
1526 | if (chars_per_line == 0) | |
c5aa993b | 1527 | init_page_info (); |
c906108c SS |
1528 | |
1529 | if (!wrap_buffer) | |
1530 | { | |
1531 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1532 | wrap_buffer[0] = '\0'; | |
1533 | } | |
1534 | else | |
1535 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1536 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1537 | } |
1538 | ||
c5aa993b | 1539 | static void |
fba45db2 | 1540 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1541 | { |
eb0d3137 | 1542 | set_screen_size (); |
c906108c SS |
1543 | set_width (); |
1544 | } | |
1545 | ||
eb0d3137 MK |
1546 | static void |
1547 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1548 | { | |
1549 | set_screen_size (); | |
1550 | } | |
1551 | ||
d6e5e7f7 PP |
1552 | /* See utils.h. */ |
1553 | ||
1554 | void | |
1555 | set_screen_width_and_height (int width, int height) | |
1556 | { | |
1557 | lines_per_page = height; | |
1558 | chars_per_line = width; | |
1559 | ||
1560 | set_screen_size (); | |
1561 | set_width (); | |
1562 | } | |
1563 | ||
c906108c | 1564 | /* Wait, so the user can read what's on the screen. Prompt the user |
720d2e96 PA |
1565 | to continue by pressing RETURN. 'q' is also provided because |
1566 | telling users what to do in the prompt is more user-friendly than | |
1567 | expecting them to think of Ctrl-C/SIGINT. */ | |
c906108c SS |
1568 | |
1569 | static void | |
fba45db2 | 1570 | prompt_for_continue (void) |
c906108c SS |
1571 | { |
1572 | char *ignore; | |
1573 | char cont_prompt[120]; | |
dcb07cfa | 1574 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
260c0b2a DE |
1575 | /* Used to add duration we waited for user to respond to |
1576 | prompt_for_continue_wait_time. */ | |
dcb07cfa PA |
1577 | using namespace std::chrono; |
1578 | steady_clock::time_point prompt_started = steady_clock::now (); | |
c906108c SS |
1579 | |
1580 | if (annotation_level > 1) | |
a3f17187 | 1581 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1582 | |
1583 | strcpy (cont_prompt, | |
1584 | "---Type <return> to continue, or q <return> to quit---"); | |
1585 | if (annotation_level > 1) | |
1586 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1587 | ||
720d2e96 PA |
1588 | /* We must do this *before* we call gdb_readline_wrapper, else it |
1589 | will eventually call us -- thinking that we're trying to print | |
1590 | beyond the end of the screen. */ | |
c906108c SS |
1591 | reinitialize_more_filter (); |
1592 | ||
3eb7562a | 1593 | prepare_to_handle_input (); |
82584158 | 1594 | |
720d2e96 PA |
1595 | /* Call gdb_readline_wrapper, not readline, in order to keep an |
1596 | event loop running. */ | |
b4f5539f | 1597 | ignore = gdb_readline_wrapper (cont_prompt); |
80dbc9fd | 1598 | make_cleanup (xfree, ignore); |
c906108c | 1599 | |
260c0b2a | 1600 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1601 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1602 | |
c906108c | 1603 | if (annotation_level > 1) |
a3f17187 | 1604 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c | 1605 | |
80dbc9fd | 1606 | if (ignore != NULL) |
c906108c SS |
1607 | { |
1608 | char *p = ignore; | |
5d502164 | 1609 | |
c906108c SS |
1610 | while (*p == ' ' || *p == '\t') |
1611 | ++p; | |
1612 | if (p[0] == 'q') | |
1690b616 SL |
1613 | /* Do not call quit here; there is no possibility of SIGINT. */ |
1614 | throw_quit ("Quit"); | |
c906108c | 1615 | } |
c906108c SS |
1616 | |
1617 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1618 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1619 | reinitialize_more_filter (); | |
1620 | ||
581e13c1 | 1621 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
80dbc9fd PA |
1622 | |
1623 | do_cleanups (old_chain); | |
c906108c SS |
1624 | } |
1625 | ||
26c4b26f | 1626 | /* Initialize timer to keep track of how long we waited for the user. */ |
bd712aed DE |
1627 | |
1628 | void | |
1629 | reset_prompt_for_continue_wait_time (void) | |
1630 | { | |
dcb07cfa | 1631 | using namespace std::chrono; |
bd712aed | 1632 | |
dcb07cfa | 1633 | prompt_for_continue_wait_time = steady_clock::duration::zero (); |
bd712aed DE |
1634 | } |
1635 | ||
1636 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1637 | ||
dcb07cfa PA |
1638 | std::chrono::steady_clock::duration |
1639 | get_prompt_for_continue_wait_time () | |
bd712aed DE |
1640 | { |
1641 | return prompt_for_continue_wait_time; | |
1642 | } | |
1643 | ||
c906108c SS |
1644 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1645 | ||
1646 | void | |
fba45db2 | 1647 | reinitialize_more_filter (void) |
c906108c SS |
1648 | { |
1649 | lines_printed = 0; | |
1650 | chars_printed = 0; | |
1651 | } | |
1652 | ||
1653 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1654 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1655 | If INDENT is non-null, it is a string to be printed to indent the |
1656 | wrapped part on the next line. INDENT must remain accessible until | |
1657 | the next call to wrap_here() or until a newline is printed through | |
1658 | fputs_filtered(). | |
1659 | ||
1660 | If the line is already overfull, we immediately print a newline and | |
1661 | the indentation, and disable further wrapping. | |
1662 | ||
1663 | If we don't know the width of lines, but we know the page height, | |
1664 | we must not wrap words, but should still keep track of newlines | |
1665 | that were explicitly printed. | |
1666 | ||
1667 | INDENT should not contain tabs, as that will mess up the char count | |
1668 | on the next line. FIXME. | |
1669 | ||
1670 | This routine is guaranteed to force out any output which has been | |
1671 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1672 | used to force out output from the wrap_buffer. */ | |
1673 | ||
1674 | void | |
d2c0eef4 | 1675 | wrap_here (const char *indent) |
c906108c | 1676 | { |
581e13c1 | 1677 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1678 | if (!wrap_buffer) |
3e43a32a MS |
1679 | internal_error (__FILE__, __LINE__, |
1680 | _("failed internal consistency check")); | |
c906108c SS |
1681 | |
1682 | if (wrap_buffer[0]) | |
1683 | { | |
1684 | *wrap_pointer = '\0'; | |
1685 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1686 | } | |
1687 | wrap_pointer = wrap_buffer; | |
1688 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1689 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1690 | { |
1691 | wrap_column = 0; | |
1692 | } | |
1693 | else if (chars_printed >= chars_per_line) | |
1694 | { | |
1695 | puts_filtered ("\n"); | |
1696 | if (indent != NULL) | |
1697 | puts_filtered (indent); | |
1698 | wrap_column = 0; | |
1699 | } | |
1700 | else | |
1701 | { | |
1702 | wrap_column = chars_printed; | |
1703 | if (indent == NULL) | |
1704 | wrap_indent = ""; | |
1705 | else | |
1706 | wrap_indent = indent; | |
1707 | } | |
1708 | } | |
1709 | ||
4a351cef | 1710 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1711 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1712 | right or left justified in the column. Never prints |
1713 | trailing spaces. String should never be longer than | |
1714 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1715 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1716 | |
1717 | void | |
1718 | puts_filtered_tabular (char *string, int width, int right) | |
1719 | { | |
1720 | int spaces = 0; | |
1721 | int stringlen; | |
1722 | char *spacebuf; | |
1723 | ||
1724 | gdb_assert (chars_per_line > 0); | |
1725 | if (chars_per_line == UINT_MAX) | |
1726 | { | |
1727 | fputs_filtered (string, gdb_stdout); | |
1728 | fputs_filtered ("\n", gdb_stdout); | |
1729 | return; | |
1730 | } | |
1731 | ||
1732 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1733 | fputs_filtered ("\n", gdb_stdout); | |
1734 | ||
1735 | if (width >= chars_per_line) | |
1736 | width = chars_per_line - 1; | |
1737 | ||
1738 | stringlen = strlen (string); | |
1739 | ||
1740 | if (chars_printed > 0) | |
1741 | spaces = width - (chars_printed - 1) % width - 1; | |
1742 | if (right) | |
1743 | spaces += width - stringlen; | |
1744 | ||
224c3ddb | 1745 | spacebuf = (char *) alloca (spaces + 1); |
4a351cef AF |
1746 | spacebuf[spaces] = '\0'; |
1747 | while (spaces--) | |
1748 | spacebuf[spaces] = ' '; | |
1749 | ||
1750 | fputs_filtered (spacebuf, gdb_stdout); | |
1751 | fputs_filtered (string, gdb_stdout); | |
1752 | } | |
1753 | ||
1754 | ||
c906108c | 1755 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 1756 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 1757 | any pending output for the current line, flush it and start a new |
581e13c1 | 1758 | line. Otherwise do nothing. */ |
c906108c SS |
1759 | |
1760 | void | |
fba45db2 | 1761 | begin_line (void) |
c906108c SS |
1762 | { |
1763 | if (chars_printed > 0) | |
1764 | { | |
1765 | puts_filtered ("\n"); | |
1766 | } | |
1767 | } | |
1768 | ||
ac9a91a7 | 1769 | |
c906108c SS |
1770 | /* Like fputs but if FILTER is true, pause after every screenful. |
1771 | ||
1772 | Regardless of FILTER can wrap at points other than the final | |
1773 | character of a line. | |
1774 | ||
1775 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1776 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1777 | anything. | |
1778 | ||
1779 | Note that a longjmp to top level may occur in this routine (only if | |
1780 | FILTER is true) (since prompt_for_continue may do so) so this | |
1781 | routine should not be called when cleanups are not in place. */ | |
1782 | ||
1783 | static void | |
fba45db2 KB |
1784 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1785 | int filter) | |
c906108c SS |
1786 | { |
1787 | const char *lineptr; | |
1788 | ||
1789 | if (linebuffer == 0) | |
1790 | return; | |
1791 | ||
1792 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 1793 | if (stream != gdb_stdout |
b2e7f004 JK |
1794 | || !pagination_enabled |
1795 | || batch_flag | |
390a8aca | 1796 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 1797 | || top_level_interpreter () == NULL |
112e8700 | 1798 | || interp_ui_out (top_level_interpreter ())->is_mi_like_p ()) |
c906108c SS |
1799 | { |
1800 | fputs_unfiltered (linebuffer, stream); | |
1801 | return; | |
1802 | } | |
1803 | ||
1804 | /* Go through and output each character. Show line extension | |
1805 | when this is necessary; prompt user for new page when this is | |
1806 | necessary. */ | |
c5aa993b | 1807 | |
c906108c SS |
1808 | lineptr = linebuffer; |
1809 | while (*lineptr) | |
1810 | { | |
1811 | /* Possible new page. */ | |
8731e58e | 1812 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
1813 | prompt_for_continue (); |
1814 | ||
1815 | while (*lineptr && *lineptr != '\n') | |
1816 | { | |
1817 | /* Print a single line. */ | |
1818 | if (*lineptr == '\t') | |
1819 | { | |
1820 | if (wrap_column) | |
1821 | *wrap_pointer++ = '\t'; | |
1822 | else | |
1823 | fputc_unfiltered ('\t', stream); | |
1824 | /* Shifting right by 3 produces the number of tab stops | |
1825 | we have already passed, and then adding one and | |
c5aa993b | 1826 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1827 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1828 | lineptr++; | |
1829 | } | |
1830 | else | |
1831 | { | |
1832 | if (wrap_column) | |
1833 | *wrap_pointer++ = *lineptr; | |
1834 | else | |
c5aa993b | 1835 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1836 | chars_printed++; |
1837 | lineptr++; | |
1838 | } | |
c5aa993b | 1839 | |
c906108c SS |
1840 | if (chars_printed >= chars_per_line) |
1841 | { | |
1842 | unsigned int save_chars = chars_printed; | |
1843 | ||
1844 | chars_printed = 0; | |
1845 | lines_printed++; | |
1846 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1847 | if chars_per_line is right, we probably just overflowed |
1848 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1849 | if (wrap_column) |
1850 | fputc_unfiltered ('\n', stream); | |
1851 | ||
1852 | /* Possible new page. */ | |
1853 | if (lines_printed >= lines_per_page - 1) | |
1854 | prompt_for_continue (); | |
1855 | ||
581e13c1 | 1856 | /* Now output indentation and wrapped string. */ |
c906108c SS |
1857 | if (wrap_column) |
1858 | { | |
1859 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
1860 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
1861 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
1862 | /* FIXME, this strlen is what prevents wrap_indent from |
1863 | containing tabs. However, if we recurse to print it | |
1864 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 1865 | longer than (the user settable) chars_per_line. |
c906108c SS |
1866 | Note also that this can set chars_printed > chars_per_line |
1867 | if we are printing a long string. */ | |
1868 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1869 | + (save_chars - wrap_column); |
c906108c SS |
1870 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1871 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1872 | wrap_column = 0; /* And disable fancy wrap */ |
1873 | } | |
c906108c SS |
1874 | } |
1875 | } | |
1876 | ||
1877 | if (*lineptr == '\n') | |
1878 | { | |
1879 | chars_printed = 0; | |
3e43a32a MS |
1880 | wrap_here ((char *) 0); /* Spit out chars, cancel |
1881 | further wraps. */ | |
c906108c SS |
1882 | lines_printed++; |
1883 | fputc_unfiltered ('\n', stream); | |
1884 | lineptr++; | |
1885 | } | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | void | |
fba45db2 | 1890 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1891 | { |
1892 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1893 | } | |
1894 | ||
1895 | int | |
fba45db2 | 1896 | putchar_unfiltered (int c) |
c906108c | 1897 | { |
11cf8741 | 1898 | char buf = c; |
e0627e85 | 1899 | |
d9fcf2fb | 1900 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1901 | return c; |
1902 | } | |
1903 | ||
d1f4cff8 AC |
1904 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1905 | May return nonlocally. */ | |
1906 | ||
1907 | int | |
1908 | putchar_filtered (int c) | |
1909 | { | |
1910 | return fputc_filtered (c, gdb_stdout); | |
1911 | } | |
1912 | ||
c906108c | 1913 | int |
fba45db2 | 1914 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 1915 | { |
11cf8741 | 1916 | char buf = c; |
e0627e85 | 1917 | |
d9fcf2fb | 1918 | ui_file_write (stream, &buf, 1); |
c906108c SS |
1919 | return c; |
1920 | } | |
1921 | ||
1922 | int | |
fba45db2 | 1923 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
1924 | { |
1925 | char buf[2]; | |
1926 | ||
1927 | buf[0] = c; | |
1928 | buf[1] = 0; | |
1929 | fputs_filtered (buf, stream); | |
1930 | return c; | |
1931 | } | |
1932 | ||
1933 | /* puts_debug is like fputs_unfiltered, except it prints special | |
1934 | characters in printable fashion. */ | |
1935 | ||
1936 | void | |
fba45db2 | 1937 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
1938 | { |
1939 | int ch; | |
1940 | ||
1941 | /* Print prefix and suffix after each line. */ | |
1942 | static int new_line = 1; | |
1943 | static int return_p = 0; | |
a121b7c1 PA |
1944 | static const char *prev_prefix = ""; |
1945 | static const char *prev_suffix = ""; | |
c906108c SS |
1946 | |
1947 | if (*string == '\n') | |
1948 | return_p = 0; | |
1949 | ||
1950 | /* If the prefix is changing, print the previous suffix, a new line, | |
1951 | and the new prefix. */ | |
c5aa993b | 1952 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 1953 | { |
9846de1b JM |
1954 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
1955 | fputs_unfiltered ("\n", gdb_stdlog); | |
1956 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
1957 | } |
1958 | ||
1959 | /* Print prefix if we printed a newline during the previous call. */ | |
1960 | if (new_line) | |
1961 | { | |
1962 | new_line = 0; | |
9846de1b | 1963 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
1964 | } |
1965 | ||
1966 | prev_prefix = prefix; | |
1967 | prev_suffix = suffix; | |
1968 | ||
1969 | /* Output characters in a printable format. */ | |
1970 | while ((ch = *string++) != '\0') | |
1971 | { | |
1972 | switch (ch) | |
c5aa993b | 1973 | { |
c906108c SS |
1974 | default: |
1975 | if (isprint (ch)) | |
9846de1b | 1976 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
1977 | |
1978 | else | |
9846de1b | 1979 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
1980 | break; |
1981 | ||
c5aa993b JM |
1982 | case '\\': |
1983 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
1984 | break; | |
1985 | case '\b': | |
1986 | fputs_unfiltered ("\\b", gdb_stdlog); | |
1987 | break; | |
1988 | case '\f': | |
1989 | fputs_unfiltered ("\\f", gdb_stdlog); | |
1990 | break; | |
1991 | case '\n': | |
1992 | new_line = 1; | |
1993 | fputs_unfiltered ("\\n", gdb_stdlog); | |
1994 | break; | |
1995 | case '\r': | |
1996 | fputs_unfiltered ("\\r", gdb_stdlog); | |
1997 | break; | |
1998 | case '\t': | |
1999 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2000 | break; | |
2001 | case '\v': | |
2002 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2003 | break; | |
2004 | } | |
c906108c SS |
2005 | |
2006 | return_p = ch == '\r'; | |
2007 | } | |
2008 | ||
2009 | /* Print suffix if we printed a newline. */ | |
2010 | if (new_line) | |
2011 | { | |
9846de1b JM |
2012 | fputs_unfiltered (suffix, gdb_stdlog); |
2013 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2014 | } |
2015 | } | |
2016 | ||
2017 | ||
2018 | /* Print a variable number of ARGS using format FORMAT. If this | |
2019 | information is going to put the amount written (since the last call | |
2020 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2021 | call prompt_for_continue to get the users permision to continue. | |
2022 | ||
2023 | Unlike fprintf, this function does not return a value. | |
2024 | ||
2025 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2026 | fprintf (takes a stream to write on), and printf (the usual). | |
2027 | ||
2028 | Note also that a longjmp to top level may occur in this routine | |
2029 | (since prompt_for_continue may do so) so this routine should not be | |
2030 | called when cleanups are not in place. */ | |
2031 | ||
2032 | static void | |
fba45db2 KB |
2033 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2034 | va_list args, int filter) | |
c906108c SS |
2035 | { |
2036 | char *linebuffer; | |
2037 | struct cleanup *old_cleanups; | |
2038 | ||
e623b504 | 2039 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2040 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2041 | fputs_maybe_filtered (linebuffer, stream, filter); |
2042 | do_cleanups (old_cleanups); | |
2043 | } | |
2044 | ||
2045 | ||
2046 | void | |
fba45db2 | 2047 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2048 | { |
2049 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2050 | } | |
2051 | ||
2052 | void | |
fba45db2 | 2053 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2054 | { |
2055 | char *linebuffer; | |
2056 | struct cleanup *old_cleanups; | |
2057 | ||
e623b504 | 2058 | linebuffer = xstrvprintf (format, args); |
b8c9b27d | 2059 | old_cleanups = make_cleanup (xfree, linebuffer); |
75feb17d DJ |
2060 | if (debug_timestamp && stream == gdb_stdlog) |
2061 | { | |
dcb07cfa | 2062 | using namespace std::chrono; |
6e5abd65 | 2063 | int len, need_nl; |
75feb17d | 2064 | |
dcb07cfa PA |
2065 | steady_clock::time_point now = steady_clock::now (); |
2066 | seconds s = duration_cast<seconds> (now.time_since_epoch ()); | |
2067 | microseconds us = duration_cast<microseconds> (now.time_since_epoch () - s); | |
6e5abd65 PA |
2068 | |
2069 | len = strlen (linebuffer); | |
2070 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); | |
2071 | ||
dcb07cfa PA |
2072 | std::string timestamp = string_printf ("%ld.%06ld %s%s", |
2073 | (long) s.count (), | |
2074 | (long) us.count (), | |
2075 | linebuffer, need_nl ? "\n": ""); | |
2076 | fputs_unfiltered (timestamp.c_str (), stream); | |
75feb17d | 2077 | } |
6e5abd65 PA |
2078 | else |
2079 | fputs_unfiltered (linebuffer, stream); | |
c906108c SS |
2080 | do_cleanups (old_cleanups); |
2081 | } | |
2082 | ||
2083 | void | |
fba45db2 | 2084 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2085 | { |
2086 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2087 | } | |
2088 | ||
2089 | void | |
fba45db2 | 2090 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2091 | { |
2092 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2093 | } | |
2094 | ||
c906108c | 2095 | void |
8731e58e | 2096 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2097 | { |
2098 | va_list args; | |
e0627e85 | 2099 | |
c906108c | 2100 | va_start (args, format); |
c906108c SS |
2101 | vfprintf_filtered (stream, format, args); |
2102 | va_end (args); | |
2103 | } | |
2104 | ||
c906108c | 2105 | void |
8731e58e | 2106 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2107 | { |
2108 | va_list args; | |
e0627e85 | 2109 | |
c906108c | 2110 | va_start (args, format); |
c906108c SS |
2111 | vfprintf_unfiltered (stream, format, args); |
2112 | va_end (args); | |
2113 | } | |
2114 | ||
2115 | /* Like fprintf_filtered, but prints its result indented. | |
2116 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2117 | ||
c906108c | 2118 | void |
8731e58e AC |
2119 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2120 | ...) | |
c906108c SS |
2121 | { |
2122 | va_list args; | |
e0627e85 | 2123 | |
c906108c | 2124 | va_start (args, format); |
c906108c SS |
2125 | print_spaces_filtered (spaces, stream); |
2126 | ||
2127 | vfprintf_filtered (stream, format, args); | |
2128 | va_end (args); | |
2129 | } | |
2130 | ||
2131 | ||
c906108c | 2132 | void |
8731e58e | 2133 | printf_filtered (const char *format, ...) |
c906108c SS |
2134 | { |
2135 | va_list args; | |
e0627e85 | 2136 | |
c906108c | 2137 | va_start (args, format); |
c906108c SS |
2138 | vfprintf_filtered (gdb_stdout, format, args); |
2139 | va_end (args); | |
2140 | } | |
2141 | ||
2142 | ||
c906108c | 2143 | void |
8731e58e | 2144 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2145 | { |
2146 | va_list args; | |
e0627e85 | 2147 | |
c906108c | 2148 | va_start (args, format); |
c906108c SS |
2149 | vfprintf_unfiltered (gdb_stdout, format, args); |
2150 | va_end (args); | |
2151 | } | |
2152 | ||
2153 | /* Like printf_filtered, but prints it's result indented. | |
2154 | Called as printfi_filtered (spaces, format, ...); */ | |
2155 | ||
c906108c | 2156 | void |
8731e58e | 2157 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2158 | { |
2159 | va_list args; | |
e0627e85 | 2160 | |
c906108c | 2161 | va_start (args, format); |
c906108c SS |
2162 | print_spaces_filtered (spaces, gdb_stdout); |
2163 | vfprintf_filtered (gdb_stdout, format, args); | |
2164 | va_end (args); | |
2165 | } | |
2166 | ||
2167 | /* Easy -- but watch out! | |
2168 | ||
2169 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2170 | This one doesn't, and had better not! */ | |
2171 | ||
2172 | void | |
fba45db2 | 2173 | puts_filtered (const char *string) |
c906108c SS |
2174 | { |
2175 | fputs_filtered (string, gdb_stdout); | |
2176 | } | |
2177 | ||
2178 | void | |
fba45db2 | 2179 | puts_unfiltered (const char *string) |
c906108c SS |
2180 | { |
2181 | fputs_unfiltered (string, gdb_stdout); | |
2182 | } | |
2183 | ||
2184 | /* Return a pointer to N spaces and a null. The pointer is good | |
2185 | until the next call to here. */ | |
2186 | char * | |
fba45db2 | 2187 | n_spaces (int n) |
c906108c | 2188 | { |
392a587b JM |
2189 | char *t; |
2190 | static char *spaces = 0; | |
2191 | static int max_spaces = -1; | |
c906108c SS |
2192 | |
2193 | if (n > max_spaces) | |
2194 | { | |
2195 | if (spaces) | |
b8c9b27d | 2196 | xfree (spaces); |
c5aa993b JM |
2197 | spaces = (char *) xmalloc (n + 1); |
2198 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2199 | *--t = ' '; |
2200 | spaces[n] = '\0'; | |
2201 | max_spaces = n; | |
2202 | } | |
2203 | ||
2204 | return spaces + max_spaces - n; | |
2205 | } | |
2206 | ||
2207 | /* Print N spaces. */ | |
2208 | void | |
fba45db2 | 2209 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2210 | { |
2211 | fputs_filtered (n_spaces (n), stream); | |
2212 | } | |
2213 | \f | |
4a351cef | 2214 | /* C++/ObjC demangler stuff. */ |
c906108c | 2215 | |
389e51db AC |
2216 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2217 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2218 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2219 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2220 | |
2221 | void | |
0d5cff50 | 2222 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2223 | enum language lang, int arg_mode) |
c906108c SS |
2224 | { |
2225 | char *demangled; | |
2226 | ||
2227 | if (name != NULL) | |
2228 | { | |
2229 | /* If user wants to see raw output, no problem. */ | |
2230 | if (!demangle) | |
2231 | { | |
2232 | fputs_filtered (name, stream); | |
2233 | } | |
2234 | else | |
2235 | { | |
9a3d7dfd | 2236 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2237 | fputs_filtered (demangled ? demangled : name, stream); |
2238 | if (demangled != NULL) | |
2239 | { | |
b8c9b27d | 2240 | xfree (demangled); |
c906108c SS |
2241 | } |
2242 | } | |
2243 | } | |
2244 | } | |
2245 | ||
1d550c82 | 2246 | /* Modes of operation for strncmp_iw_with_mode. */ |
c5aa993b | 2247 | |
1d550c82 PA |
2248 | enum class strncmp_iw_mode |
2249 | { | |
2250 | /* Work like strncmp, while ignoring whitespace. */ | |
2251 | NORMAL, | |
c906108c | 2252 | |
1d550c82 PA |
2253 | /* Like NORMAL, but also apply the strcmp_iw hack. I.e., |
2254 | string1=="FOO(PARAMS)" matches string2=="FOO". */ | |
2255 | MATCH_PARAMS, | |
2256 | }; | |
2257 | ||
2258 | /* Helper for strncmp_iw and strcmp_iw. */ | |
2259 | ||
2260 | static int | |
2261 | strncmp_iw_with_mode (const char *string1, const char *string2, | |
2262 | size_t string2_len, strncmp_iw_mode mode) | |
c906108c | 2263 | { |
1d550c82 PA |
2264 | const char *end_str2 = string2 + string2_len; |
2265 | ||
2266 | while (1) | |
c906108c SS |
2267 | { |
2268 | while (isspace (*string1)) | |
1d550c82 PA |
2269 | string1++; |
2270 | while (string2 < end_str2 && isspace (*string2)) | |
2271 | string2++; | |
2272 | if (*string1 == '\0' || string2 == end_str2) | |
2273 | break; | |
559a7a62 JK |
2274 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2275 | break; | |
2276 | if (case_sensitivity == case_sensitive_off | |
2277 | && (tolower ((unsigned char) *string1) | |
2278 | != tolower ((unsigned char) *string2))) | |
2279 | break; | |
1d550c82 PA |
2280 | |
2281 | string1++; | |
2282 | string2++; | |
c906108c | 2283 | } |
1d550c82 PA |
2284 | |
2285 | if (string2 == end_str2) | |
2286 | { | |
2287 | if (mode == strncmp_iw_mode::NORMAL) | |
2288 | return 0; | |
2289 | else | |
2290 | return (*string1 != '\0' && *string1 != '('); | |
2291 | } | |
2292 | else | |
2293 | return 1; | |
2294 | } | |
2295 | ||
2296 | /* See utils.h. */ | |
2297 | ||
2298 | int | |
2299 | strncmp_iw (const char *string1, const char *string2, size_t string2_len) | |
2300 | { | |
2301 | return strncmp_iw_with_mode (string1, string2, string2_len, | |
2302 | strncmp_iw_mode::NORMAL); | |
2303 | } | |
2304 | ||
2305 | /* See utils.h. */ | |
2306 | ||
2307 | int | |
2308 | strcmp_iw (const char *string1, const char *string2) | |
2309 | { | |
2310 | return strncmp_iw_with_mode (string1, string2, strlen (string2), | |
2311 | strncmp_iw_mode::MATCH_PARAMS); | |
c906108c | 2312 | } |
2de7ced7 | 2313 | |
0fe19209 DC |
2314 | /* This is like strcmp except that it ignores whitespace and treats |
2315 | '(' as the first non-NULL character in terms of ordering. Like | |
2316 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2317 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2318 | according to that ordering. | |
2319 | ||
2320 | If a list is sorted according to this function and if you want to | |
2321 | find names in the list that match some fixed NAME according to | |
2322 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2323 | where this function would put NAME. | |
2324 | ||
559a7a62 JK |
2325 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2326 | may choose it during later lookup. Therefore this function always sorts | |
2327 | primarily case-insensitively and secondarily case-sensitively. | |
2328 | ||
0fe19209 DC |
2329 | Here are some examples of why using strcmp to sort is a bad idea: |
2330 | ||
2331 | Whitespace example: | |
2332 | ||
2333 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2334 | we try to do a search for "foo<char*>", strcmp will locate this | |
2335 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2336 | will start looking at strings beginning with "goo", and will never | |
2337 | see the correct match of "foo<char *>". | |
2338 | ||
2339 | Parenthesis example: | |
2340 | ||
2341 | In practice, this is less like to be an issue, but I'll give it a | |
2342 | shot. Let's assume that '$' is a legitimate character to occur in | |
2343 | symbols. (Which may well even be the case on some systems.) Then | |
2344 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2345 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2346 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2347 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2348 | "foo") is false, so it won't proceed to the actual match of | |
2349 | "foo(int)" with "foo". */ | |
2350 | ||
2351 | int | |
2352 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2353 | { | |
559a7a62 JK |
2354 | const char *saved_string1 = string1, *saved_string2 = string2; |
2355 | enum case_sensitivity case_pass = case_sensitive_off; | |
2356 | ||
2357 | for (;;) | |
0fe19209 | 2358 | { |
b11b1f88 JK |
2359 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2360 | Provide stub characters if we are already at the end of one of the | |
2361 | strings. */ | |
2362 | char c1 = 'X', c2 = 'X'; | |
2363 | ||
2364 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2365 | { |
b11b1f88 JK |
2366 | while (isspace (*string1)) |
2367 | string1++; | |
2368 | while (isspace (*string2)) | |
2369 | string2++; | |
2370 | ||
559a7a62 JK |
2371 | switch (case_pass) |
2372 | { | |
2373 | case case_sensitive_off: | |
2374 | c1 = tolower ((unsigned char) *string1); | |
2375 | c2 = tolower ((unsigned char) *string2); | |
2376 | break; | |
2377 | case case_sensitive_on: | |
b11b1f88 JK |
2378 | c1 = *string1; |
2379 | c2 = *string2; | |
559a7a62 JK |
2380 | break; |
2381 | } | |
b11b1f88 JK |
2382 | if (c1 != c2) |
2383 | break; | |
2384 | ||
2385 | if (*string1 != '\0') | |
2386 | { | |
2387 | string1++; | |
2388 | string2++; | |
2389 | } | |
0fe19209 | 2390 | } |
b11b1f88 JK |
2391 | |
2392 | switch (*string1) | |
0fe19209 | 2393 | { |
b11b1f88 JK |
2394 | /* Characters are non-equal unless they're both '\0'; we want to |
2395 | make sure we get the comparison right according to our | |
2396 | comparison in the cases where one of them is '\0' or '('. */ | |
2397 | case '\0': | |
2398 | if (*string2 == '\0') | |
559a7a62 | 2399 | break; |
b11b1f88 JK |
2400 | else |
2401 | return -1; | |
2402 | case '(': | |
2403 | if (*string2 == '\0') | |
2404 | return 1; | |
2405 | else | |
2406 | return -1; | |
2407 | default: | |
2408 | if (*string2 == '\0' || *string2 == '(') | |
2409 | return 1; | |
559a7a62 JK |
2410 | else if (c1 > c2) |
2411 | return 1; | |
2412 | else if (c1 < c2) | |
2413 | return -1; | |
2414 | /* PASSTHRU */ | |
0fe19209 | 2415 | } |
559a7a62 JK |
2416 | |
2417 | if (case_pass == case_sensitive_on) | |
2418 | return 0; | |
2419 | ||
2420 | /* Otherwise the strings were equal in case insensitive way, make | |
2421 | a more fine grained comparison in a case sensitive way. */ | |
2422 | ||
2423 | case_pass = case_sensitive_on; | |
2424 | string1 = saved_string1; | |
2425 | string2 = saved_string2; | |
0fe19209 | 2426 | } |
0fe19209 DC |
2427 | } |
2428 | ||
2de7ced7 DJ |
2429 | /* A simple comparison function with opposite semantics to strcmp. */ |
2430 | ||
2431 | int | |
2432 | streq (const char *lhs, const char *rhs) | |
2433 | { | |
2434 | return !strcmp (lhs, rhs); | |
2435 | } | |
c906108c | 2436 | \f |
c5aa993b | 2437 | |
c906108c | 2438 | /* |
c5aa993b JM |
2439 | ** subset_compare() |
2440 | ** Answer whether string_to_compare is a full or partial match to | |
2441 | ** template_string. The partial match must be in sequence starting | |
2442 | ** at index 0. | |
2443 | */ | |
c906108c | 2444 | int |
a121b7c1 | 2445 | subset_compare (const char *string_to_compare, const char *template_string) |
7a292a7a SS |
2446 | { |
2447 | int match; | |
e0627e85 | 2448 | |
8731e58e AC |
2449 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2450 | && strlen (string_to_compare) <= strlen (template_string)) | |
2451 | match = | |
61012eef | 2452 | (startswith (template_string, string_to_compare)); |
7a292a7a SS |
2453 | else |
2454 | match = 0; | |
2455 | return match; | |
2456 | } | |
c906108c | 2457 | |
75feb17d DJ |
2458 | static void |
2459 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2460 | struct cmd_list_element *c, const char *value) | |
2461 | { | |
3e43a32a MS |
2462 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2463 | value); | |
75feb17d | 2464 | } |
c906108c | 2465 | \f |
c5aa993b | 2466 | |
c906108c | 2467 | void |
fba45db2 | 2468 | initialize_utils (void) |
c906108c | 2469 | { |
35096d9d | 2470 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2471 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2472 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2473 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2474 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2475 | set_width_command, |
920d2a44 | 2476 | show_chars_per_line, |
35096d9d AC |
2477 | &setlist, &showlist); |
2478 | ||
2479 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2480 | Set number of lines in a page for GDB output pagination."), _("\ |
2481 | Show number of lines in a page for GDB output pagination."), _("\ | |
2482 | This affects the number of lines after which GDB will pause\n\ | |
2483 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2484 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2485 | set_height_command, |
920d2a44 | 2486 | show_lines_per_page, |
35096d9d | 2487 | &setlist, &showlist); |
c5aa993b | 2488 | |
5bf193a2 AC |
2489 | add_setshow_boolean_cmd ("pagination", class_support, |
2490 | &pagination_enabled, _("\ | |
77dec115 EZ |
2491 | Set state of GDB output pagination."), _("\ |
2492 | Show state of GDB output pagination."), _("\ | |
2493 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2494 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2495 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2496 | NULL, |
920d2a44 | 2497 | show_pagination_enabled, |
5bf193a2 | 2498 | &setlist, &showlist); |
4261bedc | 2499 | |
5bf193a2 AC |
2500 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2501 | &sevenbit_strings, _("\ | |
2502 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2503 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2504 | NULL, | |
920d2a44 | 2505 | show_sevenbit_strings, |
5bf193a2 AC |
2506 | &setprintlist, &showprintlist); |
2507 | ||
75feb17d DJ |
2508 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2509 | &debug_timestamp, _("\ | |
2510 | Set timestamping of debugging messages."), _("\ | |
2511 | Show timestamping of debugging messages."), _("\ | |
2512 | When set, debugging messages will be marked with seconds and microseconds."), | |
2513 | NULL, | |
2514 | show_debug_timestamp, | |
2515 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2516 | } |
2517 | ||
66bf4b3a | 2518 | const char * |
5af949e3 | 2519 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2520 | { |
2521 | /* Truncate address to the size of a target address, avoiding shifts | |
2522 | larger or equal than the width of a CORE_ADDR. The local | |
2523 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2524 | when it won't occur. */ |
66bf4b3a AC |
2525 | /* NOTE: This assumes that the significant address information is |
2526 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2527 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2528 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2529 | ||
5af949e3 | 2530 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2531 | |
2532 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2533 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2534 | return hex_string (addr); | |
2535 | } | |
2536 | ||
f1310107 TJB |
2537 | /* This function is described in "defs.h". */ |
2538 | ||
2539 | const char * | |
2540 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2541 | { | |
2542 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2543 | ||
2544 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2545 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2546 | ||
2547 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2548 | that returns the language localized string formatted to a width | |
2549 | based on gdbarch_addr_bit. */ | |
2550 | if (addr_bit <= 32) | |
2551 | return hex_string_custom (address, 8); | |
2552 | else | |
2553 | return hex_string_custom (address, 16); | |
2554 | } | |
2555 | ||
8e3b41a9 JK |
2556 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2557 | ||
2558 | hashval_t | |
2559 | core_addr_hash (const void *ap) | |
2560 | { | |
19ba03f4 | 2561 | const CORE_ADDR *addrp = (const CORE_ADDR *) ap; |
8e3b41a9 JK |
2562 | |
2563 | return *addrp; | |
2564 | } | |
2565 | ||
2566 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2567 | ||
2568 | int | |
2569 | core_addr_eq (const void *ap, const void *bp) | |
2570 | { | |
19ba03f4 SM |
2571 | const CORE_ADDR *addr_ap = (const CORE_ADDR *) ap; |
2572 | const CORE_ADDR *addr_bp = (const CORE_ADDR *) bp; | |
8e3b41a9 JK |
2573 | |
2574 | return *addr_ap == *addr_bp; | |
2575 | } | |
2576 | ||
03dd37c3 AC |
2577 | /* Convert a string back into a CORE_ADDR. */ |
2578 | CORE_ADDR | |
2579 | string_to_core_addr (const char *my_string) | |
2580 | { | |
2581 | CORE_ADDR addr = 0; | |
9544c605 | 2582 | |
03dd37c3 AC |
2583 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2584 | { | |
ced572fe | 2585 | /* Assume that it is in hex. */ |
03dd37c3 | 2586 | int i; |
5d502164 | 2587 | |
03dd37c3 AC |
2588 | for (i = 2; my_string[i] != '\0'; i++) |
2589 | { | |
2590 | if (isdigit (my_string[i])) | |
2591 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2592 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2593 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2594 | else | |
63f06803 | 2595 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2596 | } |
2597 | } | |
2598 | else | |
2599 | { | |
2600 | /* Assume that it is in decimal. */ | |
2601 | int i; | |
5d502164 | 2602 | |
03dd37c3 AC |
2603 | for (i = 0; my_string[i] != '\0'; i++) |
2604 | { | |
2605 | if (isdigit (my_string[i])) | |
2606 | addr = (my_string[i] - '0') + (addr * 10); | |
2607 | else | |
63f06803 | 2608 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2609 | } |
2610 | } | |
9544c605 | 2611 | |
03dd37c3 AC |
2612 | return addr; |
2613 | } | |
58d370e0 | 2614 | |
14278e1f | 2615 | gdb::unique_xmalloc_ptr<char> |
58d370e0 TT |
2616 | gdb_realpath (const char *filename) |
2617 | { | |
0fa9473f JB |
2618 | /* On most hosts, we rely on canonicalize_file_name to compute |
2619 | the FILENAME's realpath. | |
2620 | ||
2621 | But the situation is slightly more complex on Windows, due to some | |
2622 | versions of GCC which were reported to generate paths where | |
2623 | backlashes (the directory separator) were doubled. For instance: | |
2624 | c:\\some\\double\\slashes\\dir | |
2625 | ... instead of ... | |
2626 | c:\some\double\slashes\dir | |
2627 | Those double-slashes were getting in the way when comparing paths, | |
2628 | for instance when trying to insert a breakpoint as follow: | |
2629 | (gdb) b c:/some/double/slashes/dir/foo.c:4 | |
2630 | No source file named c:/some/double/slashes/dir/foo.c:4. | |
2631 | (gdb) b c:\some\double\slashes\dir\foo.c:4 | |
2632 | No source file named c:\some\double\slashes\dir\foo.c:4. | |
2633 | To prevent this from happening, we need this function to always | |
2634 | strip those extra backslashes. While canonicalize_file_name does | |
2635 | perform this simplification, it only works when the path is valid. | |
2636 | Since the simplification would be useful even if the path is not | |
2637 | valid (one can always set a breakpoint on a file, even if the file | |
2638 | does not exist locally), we rely instead on GetFullPathName to | |
2639 | perform the canonicalization. */ | |
2640 | ||
9c5e4386 JB |
2641 | #if defined (_WIN32) |
2642 | { | |
2643 | char buf[MAX_PATH]; | |
2644 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2645 | ||
0fa9473f JB |
2646 | /* The file system is case-insensitive but case-preserving. |
2647 | So it is important we do not lowercase the path. Otherwise, | |
2648 | we might not be able to display the original casing in a given | |
2649 | path. */ | |
9c5e4386 | 2650 | if (len > 0 && len < MAX_PATH) |
14278e1f | 2651 | return gdb::unique_xmalloc_ptr<char> (xstrdup (buf)); |
9c5e4386 | 2652 | } |
abbffc89 YQ |
2653 | #else |
2654 | { | |
2655 | char *rp = canonicalize_file_name (filename); | |
2656 | ||
2657 | if (rp != NULL) | |
14278e1f | 2658 | return gdb::unique_xmalloc_ptr<char> (rp); |
abbffc89 | 2659 | } |
9c5e4386 JB |
2660 | #endif |
2661 | ||
70d35819 | 2662 | /* This system is a lost cause, just dup the buffer. */ |
14278e1f | 2663 | return gdb::unique_xmalloc_ptr<char> (xstrdup (filename)); |
58d370e0 | 2664 | } |
303c8ebd | 2665 | |
14278e1f TT |
2666 | #if GDB_SELF_TEST |
2667 | ||
2668 | static void | |
2669 | gdb_realpath_check_trailer (const char *input, const char *trailer) | |
2670 | { | |
2671 | gdb::unique_xmalloc_ptr<char> result = gdb_realpath (input); | |
2672 | ||
2673 | size_t len = strlen (result.get ()); | |
2674 | size_t trail_len = strlen (trailer); | |
2675 | ||
2676 | SELF_CHECK (len >= trail_len | |
2677 | && strcmp (result.get () + len - trail_len, trailer) == 0); | |
2678 | } | |
2679 | ||
2680 | static void | |
2681 | gdb_realpath_tests () | |
2682 | { | |
2683 | /* A file which contains a directory prefix. */ | |
2684 | gdb_realpath_check_trailer ("./xfullpath.exp", "/xfullpath.exp"); | |
2685 | /* A file which contains a directory prefix. */ | |
2686 | gdb_realpath_check_trailer ("../../defs.h", "/defs.h"); | |
2687 | /* A one-character filename. */ | |
2688 | gdb_realpath_check_trailer ("./a", "/a"); | |
2689 | /* A file in the root directory. */ | |
2690 | gdb_realpath_check_trailer ("/root_file_which_should_exist", | |
2691 | "/root_file_which_should_exist"); | |
2692 | /* A file which does not have a directory prefix. */ | |
2693 | gdb_realpath_check_trailer ("xfullpath.exp", "xfullpath.exp"); | |
2694 | /* A one-char filename without any directory prefix. */ | |
2695 | gdb_realpath_check_trailer ("a", "a"); | |
2696 | /* An empty filename. */ | |
2697 | gdb_realpath_check_trailer ("", ""); | |
2698 | } | |
2699 | ||
2700 | #endif /* GDB_SELF_TEST */ | |
2701 | ||
4856b6bc JK |
2702 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2703 | by gdb_realpath. */ | |
2704 | ||
4971c9a7 | 2705 | gdb::unique_xmalloc_ptr<char> |
4856b6bc JK |
2706 | gdb_realpath_keepfile (const char *filename) |
2707 | { | |
2708 | const char *base_name = lbasename (filename); | |
2709 | char *dir_name; | |
4856b6bc JK |
2710 | char *result; |
2711 | ||
2712 | /* Extract the basename of filename, and return immediately | |
2713 | a copy of filename if it does not contain any directory prefix. */ | |
2714 | if (base_name == filename) | |
4971c9a7 | 2715 | return gdb::unique_xmalloc_ptr<char> (xstrdup (filename)); |
4856b6bc | 2716 | |
224c3ddb | 2717 | dir_name = (char *) alloca ((size_t) (base_name - filename + 2)); |
4856b6bc JK |
2718 | /* Allocate enough space to store the dir_name + plus one extra |
2719 | character sometimes needed under Windows (see below), and | |
2720 | then the closing \000 character. */ | |
2721 | strncpy (dir_name, filename, base_name - filename); | |
2722 | dir_name[base_name - filename] = '\000'; | |
2723 | ||
2724 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2725 | /* We need to be careful when filename is of the form 'd:foo', which | |
2726 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2727 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2728 | { | |
2729 | dir_name[2] = '.'; | |
2730 | dir_name[3] = '\000'; | |
2731 | } | |
2732 | #endif | |
2733 | ||
2734 | /* Canonicalize the directory prefix, and build the resulting | |
2735 | filename. If the dirname realpath already contains an ending | |
2736 | directory separator, avoid doubling it. */ | |
14278e1f TT |
2737 | gdb::unique_xmalloc_ptr<char> path_storage = gdb_realpath (dir_name); |
2738 | const char *real_path = path_storage.get (); | |
4856b6bc JK |
2739 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) |
2740 | result = concat (real_path, base_name, (char *) NULL); | |
2741 | else | |
2742 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2743 | ||
4971c9a7 | 2744 | return gdb::unique_xmalloc_ptr<char> (result); |
4856b6bc JK |
2745 | } |
2746 | ||
04affae3 JK |
2747 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
2748 | PATH cannot be NULL or the empty string. | |
e3e41d58 | 2749 | This does not resolve symlinks however, use gdb_realpath for that. */ |
04affae3 | 2750 | |
e3e41d58 | 2751 | gdb::unique_xmalloc_ptr<char> |
04affae3 JK |
2752 | gdb_abspath (const char *path) |
2753 | { | |
2754 | gdb_assert (path != NULL && path[0] != '\0'); | |
2755 | ||
2756 | if (path[0] == '~') | |
e3e41d58 | 2757 | return gdb::unique_xmalloc_ptr<char> (tilde_expand (path)); |
04affae3 JK |
2758 | |
2759 | if (IS_ABSOLUTE_PATH (path)) | |
e3e41d58 | 2760 | return gdb::unique_xmalloc_ptr<char> (xstrdup (path)); |
04affae3 JK |
2761 | |
2762 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
e3e41d58 TT |
2763 | return gdb::unique_xmalloc_ptr<char> |
2764 | (concat (current_directory, | |
2765 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
2766 | ? "" : SLASH_STRING, | |
2767 | path, (char *) NULL)); | |
04affae3 JK |
2768 | } |
2769 | ||
5b03f266 AC |
2770 | ULONGEST |
2771 | align_up (ULONGEST v, int n) | |
2772 | { | |
2773 | /* Check that N is really a power of two. */ | |
2774 | gdb_assert (n && (n & (n-1)) == 0); | |
2775 | return (v + n - 1) & -n; | |
2776 | } | |
2777 | ||
2778 | ULONGEST | |
2779 | align_down (ULONGEST v, int n) | |
2780 | { | |
2781 | /* Check that N is really a power of two. */ | |
2782 | gdb_assert (n && (n & (n-1)) == 0); | |
2783 | return (v & -n); | |
2784 | } | |
ae5a43e0 DJ |
2785 | |
2786 | /* Allocation function for the libiberty hash table which uses an | |
2787 | obstack. The obstack is passed as DATA. */ | |
2788 | ||
2789 | void * | |
2790 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
2791 | { | |
241fd515 | 2792 | size_t total = size * count; |
ae5a43e0 | 2793 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 2794 | |
ae5a43e0 DJ |
2795 | memset (ptr, 0, total); |
2796 | return ptr; | |
2797 | } | |
2798 | ||
2799 | /* Trivial deallocation function for the libiberty splay tree and hash | |
2800 | table - don't deallocate anything. Rely on later deletion of the | |
2801 | obstack. DATA will be the obstack, although it is not needed | |
2802 | here. */ | |
2803 | ||
2804 | void | |
2805 | dummy_obstack_deallocate (void *object, void *data) | |
2806 | { | |
2807 | return; | |
2808 | } | |
253c8abb | 2809 | |
e1024ff1 DJ |
2810 | /* Simple, portable version of dirname that does not modify its |
2811 | argument. */ | |
2812 | ||
d721ba37 | 2813 | std::string |
e1024ff1 DJ |
2814 | ldirname (const char *filename) |
2815 | { | |
d721ba37 | 2816 | std::string dirname; |
e1024ff1 | 2817 | const char *base = lbasename (filename); |
e1024ff1 DJ |
2818 | |
2819 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
2820 | --base; | |
2821 | ||
2822 | if (base == filename) | |
d721ba37 | 2823 | return dirname; |
e1024ff1 | 2824 | |
d721ba37 | 2825 | dirname = std::string (filename, base - filename); |
e1024ff1 DJ |
2826 | |
2827 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
2828 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
2829 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
2830 | && !IS_DIR_SEPARATOR (filename[0])) | |
2831 | dirname[base++ - filename] = '.'; | |
2832 | ||
e1024ff1 DJ |
2833 | return dirname; |
2834 | } | |
d1a41061 | 2835 | |
773a1edc TT |
2836 | /* See utils.h. */ |
2837 | ||
2838 | void | |
2839 | gdb_argv::reset (const char *s) | |
2840 | { | |
2841 | char **argv = buildargv (s); | |
2842 | ||
2843 | if (s != NULL && argv == NULL) | |
2844 | malloc_failure (0); | |
2845 | ||
2846 | freeargv (m_argv); | |
2847 | m_argv = argv; | |
2848 | } | |
2849 | ||
dc146f7c VP |
2850 | int |
2851 | compare_positive_ints (const void *ap, const void *bp) | |
2852 | { | |
2853 | /* Because we know we're comparing two ints which are positive, | |
2854 | there's no danger of overflow here. */ | |
2855 | return * (int *) ap - * (int *) bp; | |
2856 | } | |
2857 | ||
f8eba3c6 TT |
2858 | /* String compare function for qsort. */ |
2859 | ||
2860 | int | |
2861 | compare_strings (const void *arg1, const void *arg2) | |
2862 | { | |
2863 | const char **s1 = (const char **) arg1; | |
2864 | const char **s2 = (const char **) arg2; | |
2865 | ||
2866 | return strcmp (*s1, *s2); | |
2867 | } | |
2868 | ||
d18b8b7a | 2869 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
2870 | #define AMBIGUOUS_MESS2 \ |
2871 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
2872 | |
2873 | const char * | |
2874 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
2875 | { | |
2876 | char *ret, *retp; | |
2877 | int ret_len; | |
2878 | char **p; | |
2879 | ||
2880 | /* Check if errmsg just need simple return. */ | |
2881 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
2882 | return bfd_errmsg (error_tag); | |
2883 | ||
2884 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
2885 | + strlen (AMBIGUOUS_MESS2); | |
2886 | for (p = matching; *p; p++) | |
2887 | ret_len += strlen (*p) + 1; | |
224c3ddb | 2888 | ret = (char *) xmalloc (ret_len + 1); |
d18b8b7a HZ |
2889 | retp = ret; |
2890 | make_cleanup (xfree, ret); | |
2891 | ||
2892 | strcpy (retp, bfd_errmsg (error_tag)); | |
2893 | retp += strlen (retp); | |
2894 | ||
2895 | strcpy (retp, AMBIGUOUS_MESS1); | |
2896 | retp += strlen (retp); | |
2897 | ||
2898 | for (p = matching; *p; p++) | |
2899 | { | |
2900 | sprintf (retp, " %s", *p); | |
2901 | retp += strlen (retp); | |
2902 | } | |
2903 | xfree (matching); | |
2904 | ||
2905 | strcpy (retp, AMBIGUOUS_MESS2); | |
2906 | ||
2907 | return ret; | |
2908 | } | |
2909 | ||
74164c56 JK |
2910 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
2911 | ||
2912 | int | |
c0939df1 | 2913 | parse_pid_to_attach (const char *args) |
74164c56 JK |
2914 | { |
2915 | unsigned long pid; | |
2916 | char *dummy; | |
2917 | ||
2918 | if (!args) | |
2919 | error_no_arg (_("process-id to attach")); | |
2920 | ||
c0939df1 | 2921 | dummy = (char *) args; |
74164c56 JK |
2922 | pid = strtoul (args, &dummy, 0); |
2923 | /* Some targets don't set errno on errors, grrr! */ | |
2924 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
2925 | error (_("Illegal process-id: %s."), args); | |
2926 | ||
2927 | return pid; | |
2928 | } | |
2929 | ||
353d1d73 JK |
2930 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
2931 | ||
2932 | static void | |
2933 | do_bpstat_clear_actions_cleanup (void *unused) | |
2934 | { | |
2935 | bpstat_clear_actions (); | |
2936 | } | |
2937 | ||
2938 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
2939 | discard_cleanups if no exception is caught. */ | |
2940 | ||
2941 | struct cleanup * | |
2942 | make_bpstat_clear_actions_cleanup (void) | |
2943 | { | |
2944 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
2945 | } | |
2946 | ||
df15bd07 JK |
2947 | /* Check for GCC >= 4.x according to the symtab->producer string. Return minor |
2948 | version (x) of 4.x in such case. If it is not GCC or it is GCC older than | |
2949 | 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */ | |
2950 | ||
2951 | int | |
2952 | producer_is_gcc_ge_4 (const char *producer) | |
2953 | { | |
df15bd07 | 2954 | int major, minor; |
b1ffba5a MW |
2955 | |
2956 | if (! producer_is_gcc (producer, &major, &minor)) | |
2957 | return -1; | |
df15bd07 JK |
2958 | if (major < 4) |
2959 | return -1; | |
2960 | if (major > 4) | |
2961 | return INT_MAX; | |
2962 | return minor; | |
2963 | } | |
2964 | ||
cc7039d3 JB |
2965 | /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR |
2966 | and MINOR versions when not NULL. Returns zero if the given PRODUCER | |
b1ffba5a MW |
2967 | is NULL or it isn't GCC. */ |
2968 | ||
cc7039d3 | 2969 | int |
b1ffba5a | 2970 | producer_is_gcc (const char *producer, int *major, int *minor) |
38360086 MW |
2971 | { |
2972 | const char *cs; | |
38360086 | 2973 | |
61012eef | 2974 | if (producer != NULL && startswith (producer, "GNU ")) |
38360086 | 2975 | { |
b1ffba5a MW |
2976 | int maj, min; |
2977 | ||
2978 | if (major == NULL) | |
2979 | major = &maj; | |
2980 | if (minor == NULL) | |
2981 | minor = &min; | |
2982 | ||
9c37b5ae | 2983 | /* Skip any identifier after "GNU " - such as "C11" or "C++". |
38360086 MW |
2984 | A full producer string might look like: |
2985 | "GNU C 4.7.2" | |
2986 | "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..." | |
2987 | "GNU C++14 5.0.0 20150123 (experimental)" | |
2988 | */ | |
2989 | cs = &producer[strlen ("GNU ")]; | |
2990 | while (*cs && !isspace (*cs)) | |
2991 | cs++; | |
2992 | if (*cs && isspace (*cs)) | |
2993 | cs++; | |
b1ffba5a | 2994 | if (sscanf (cs, "%d.%d", major, minor) == 2) |
cc7039d3 | 2995 | return 1; |
38360086 MW |
2996 | } |
2997 | ||
2998 | /* Not recognized as GCC. */ | |
cc7039d3 | 2999 | return 0; |
38360086 MW |
3000 | } |
3001 | ||
e4ab2fad JK |
3002 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
3003 | ||
3004 | static void | |
3005 | do_free_char_ptr_vec (void *arg) | |
3006 | { | |
19ba03f4 | 3007 | VEC (char_ptr) *char_ptr_vec = (VEC (char_ptr) *) arg; |
e4ab2fad JK |
3008 | |
3009 | free_char_ptr_vec (char_ptr_vec); | |
3010 | } | |
3011 | ||
3012 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
3013 | final VEC_free for CHAR_PTR_VEC itself. | |
3014 | ||
3015 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
3016 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
3017 | this function does not (cannot) clear the pointer. */ | |
3018 | ||
3019 | struct cleanup * | |
3020 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
3021 | { | |
3022 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
3023 | } | |
3024 | ||
6dea1fbd JK |
3025 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3026 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3027 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3028 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3029 | |
3030 | void | |
3031 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3032 | { | |
3033 | char *string = *stringp, *s; | |
3034 | const size_t from_len = strlen (from); | |
3035 | const size_t to_len = strlen (to); | |
3036 | ||
3037 | for (s = string;;) | |
3038 | { | |
3039 | s = strstr (s, from); | |
3040 | if (s == NULL) | |
3041 | break; | |
3042 | ||
1564a261 JK |
3043 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3044 | || s[-1] == DIRNAME_SEPARATOR) | |
3045 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3046 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3047 | { |
3048 | char *string_new; | |
3049 | ||
224c3ddb SM |
3050 | string_new |
3051 | = (char *) xrealloc (string, (strlen (string) + to_len + 1)); | |
6dea1fbd JK |
3052 | |
3053 | /* Relocate the current S pointer. */ | |
3054 | s = s - string + string_new; | |
3055 | string = string_new; | |
3056 | ||
3057 | /* Replace from by to. */ | |
3058 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3059 | memcpy (s, to, to_len); | |
3060 | ||
3061 | s += to_len; | |
3062 | } | |
3063 | else | |
3064 | s++; | |
3065 | } | |
3066 | ||
3067 | *stringp = string; | |
3068 | } | |
3069 | ||
0b6cb71e DE |
3070 | #ifdef HAVE_WAITPID |
3071 | ||
3072 | #ifdef SIGALRM | |
3073 | ||
3074 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3075 | ||
3076 | static void | |
3077 | sigalrm_handler (int signo) | |
3078 | { | |
3079 | /* Nothing to do. */ | |
3080 | } | |
3081 | ||
3082 | #endif | |
3083 | ||
3084 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3085 | TIMEOUT is the time to stop waiting in seconds. | |
3086 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3087 | Returns PID if it was successfully waited for, otherwise -1. | |
3088 | ||
3089 | Timeouts are currently implemented with alarm and SIGALRM. | |
3090 | If the host does not support them, this waits "forever". | |
3091 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3092 | ||
3093 | pid_t | |
3094 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3095 | { | |
3096 | pid_t waitpid_result; | |
3097 | ||
3098 | gdb_assert (pid > 0); | |
3099 | gdb_assert (timeout >= 0); | |
3100 | ||
3101 | if (timeout > 0) | |
3102 | { | |
3103 | #ifdef SIGALRM | |
3104 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3105 | struct sigaction sa, old_sa; | |
3106 | ||
3107 | sa.sa_handler = sigalrm_handler; | |
3108 | sigemptyset (&sa.sa_mask); | |
3109 | sa.sa_flags = 0; | |
3110 | sigaction (SIGALRM, &sa, &old_sa); | |
3111 | #else | |
a40805d4 | 3112 | sighandler_t ofunc; |
0b6cb71e | 3113 | |
a40805d4 | 3114 | ofunc = signal (SIGALRM, sigalrm_handler); |
0b6cb71e DE |
3115 | #endif |
3116 | ||
3117 | alarm (timeout); | |
3118 | #endif | |
3119 | ||
3120 | waitpid_result = waitpid (pid, status, 0); | |
3121 | ||
3122 | #ifdef SIGALRM | |
3123 | alarm (0); | |
3124 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3125 | sigaction (SIGALRM, &old_sa, NULL); | |
3126 | #else | |
3127 | signal (SIGALRM, ofunc); | |
3128 | #endif | |
3129 | #endif | |
3130 | } | |
3131 | else | |
3132 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3133 | ||
3134 | if (waitpid_result == pid) | |
3135 | return pid; | |
3136 | else | |
3137 | return -1; | |
3138 | } | |
3139 | ||
3140 | #endif /* HAVE_WAITPID */ | |
3141 | ||
202cbf1c JK |
3142 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3143 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3144 | ||
3145 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3146 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3147 | ||
3148 | int | |
3149 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3150 | { | |
3151 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3152 | ||
3153 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3154 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3155 | ||
3156 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3157 | { | |
3158 | char *pattern_slash, *string_slash; | |
3159 | ||
3160 | /* Replace '\' by '/' in both strings. */ | |
3161 | ||
0ae1c716 | 3162 | pattern_slash = (char *) alloca (strlen (pattern) + 1); |
202cbf1c JK |
3163 | strcpy (pattern_slash, pattern); |
3164 | pattern = pattern_slash; | |
3165 | for (; *pattern_slash != 0; pattern_slash++) | |
3166 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3167 | *pattern_slash = '/'; | |
3168 | ||
0ae1c716 | 3169 | string_slash = (char *) alloca (strlen (string) + 1); |
202cbf1c JK |
3170 | strcpy (string_slash, string); |
3171 | string = string_slash; | |
3172 | for (; *string_slash != 0; string_slash++) | |
3173 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3174 | *string_slash = '/'; | |
3175 | } | |
3176 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3177 | ||
3178 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3179 | flags |= FNM_CASEFOLD; | |
3180 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3181 | ||
3182 | return fnmatch (pattern, string, flags); | |
3183 | } | |
3184 | ||
cce0e923 DE |
3185 | /* Return the number of path elements in PATH. |
3186 | / = 1 | |
3187 | /foo = 2 | |
3188 | /foo/ = 2 | |
3189 | foo/bar = 2 | |
3190 | foo/ = 1 */ | |
3191 | ||
3192 | int | |
3193 | count_path_elements (const char *path) | |
3194 | { | |
3195 | int count = 0; | |
3196 | const char *p = path; | |
3197 | ||
3198 | if (HAS_DRIVE_SPEC (p)) | |
3199 | { | |
3200 | p = STRIP_DRIVE_SPEC (p); | |
3201 | ++count; | |
3202 | } | |
3203 | ||
3204 | while (*p != '\0') | |
3205 | { | |
3206 | if (IS_DIR_SEPARATOR (*p)) | |
3207 | ++count; | |
3208 | ++p; | |
3209 | } | |
3210 | ||
3211 | /* Backup one if last character is /, unless it's the only one. */ | |
3212 | if (p > path + 1 && IS_DIR_SEPARATOR (p[-1])) | |
3213 | --count; | |
3214 | ||
3215 | /* Add one for the file name, if present. */ | |
3216 | if (p > path && !IS_DIR_SEPARATOR (p[-1])) | |
3217 | ++count; | |
3218 | ||
3219 | return count; | |
3220 | } | |
3221 | ||
3222 | /* Remove N leading path elements from PATH. | |
3223 | N must be non-negative. | |
3224 | If PATH has more than N path elements then return NULL. | |
3225 | If PATH has exactly N path elements then return "". | |
3226 | See count_path_elements for a description of how we do the counting. */ | |
3227 | ||
3228 | const char * | |
3229 | strip_leading_path_elements (const char *path, int n) | |
3230 | { | |
3231 | int i = 0; | |
3232 | const char *p = path; | |
3233 | ||
3234 | gdb_assert (n >= 0); | |
3235 | ||
3236 | if (n == 0) | |
3237 | return p; | |
3238 | ||
3239 | if (HAS_DRIVE_SPEC (p)) | |
3240 | { | |
3241 | p = STRIP_DRIVE_SPEC (p); | |
3242 | ++i; | |
3243 | } | |
3244 | ||
3245 | while (i < n) | |
3246 | { | |
3247 | while (*p != '\0' && !IS_DIR_SEPARATOR (*p)) | |
3248 | ++p; | |
3249 | if (*p == '\0') | |
3250 | { | |
3251 | if (i + 1 == n) | |
3252 | return ""; | |
3253 | return NULL; | |
3254 | } | |
3255 | ++p; | |
3256 | ++i; | |
3257 | } | |
3258 | ||
3259 | return p; | |
3260 | } | |
3261 | ||
3c16cced PA |
3262 | void |
3263 | _initialize_utils (void) | |
3264 | { | |
3265 | add_internal_problem_command (&internal_error_problem); | |
3266 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3267 | add_internal_problem_command (&demangler_warning_problem); |
14278e1f TT |
3268 | |
3269 | #if GDB_SELF_TEST | |
3270 | selftests::register_test (gdb_realpath_tests); | |
3271 | #endif | |
3c16cced | 3272 | } |