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" |
223ffa71 | 70 | #include "common/gdb_optional.h" |
8626589c | 71 | |
a3828db0 | 72 | #if !HAVE_DECL_MALLOC |
5ac79d78 | 73 | extern PTR malloc (); /* ARI: PTR */ |
3c37485b | 74 | #endif |
a3828db0 | 75 | #if !HAVE_DECL_REALLOC |
5ac79d78 | 76 | extern PTR realloc (); /* ARI: PTR */ |
0e52036f | 77 | #endif |
a3828db0 | 78 | #if !HAVE_DECL_FREE |
81b8eb80 AC |
79 | extern void free (); |
80 | #endif | |
81b8eb80 | 81 | |
9a4105ab | 82 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
83 | |
84 | /* Prototypes for local functions */ | |
85 | ||
d9fcf2fb | 86 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 87 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 88 | |
d9fcf2fb | 89 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void prompt_for_continue (void); |
c906108c | 92 | |
eb0d3137 | 93 | static void set_screen_size (void); |
a14ed312 | 94 | static void set_width (void); |
c906108c | 95 | |
260c0b2a DE |
96 | /* Time spent in prompt_for_continue in the currently executing command |
97 | waiting for user to respond. | |
98 | Initialized in make_command_stats_cleanup. | |
99 | Modified in prompt_for_continue and defaulted_query. | |
100 | Used in report_command_stats. */ | |
101 | ||
dcb07cfa | 102 | static std::chrono::steady_clock::duration prompt_for_continue_wait_time; |
260c0b2a | 103 | |
75feb17d DJ |
104 | /* A flag indicating whether to timestamp debugging messages. */ |
105 | ||
106 | static int debug_timestamp = 0; | |
107 | ||
c906108c SS |
108 | /* Nonzero means that strings with character values >0x7F should be printed |
109 | as octal escapes. Zero means just print the value (e.g. it's an | |
110 | international character, and the terminal or window can cope.) */ | |
111 | ||
112 | int sevenbit_strings = 0; | |
920d2a44 AC |
113 | static void |
114 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
115 | struct cmd_list_element *c, const char *value) | |
116 | { | |
3e43a32a MS |
117 | fprintf_filtered (file, _("Printing of 8-bit characters " |
118 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
119 | value); |
120 | } | |
c906108c | 121 | |
c906108c SS |
122 | /* String to be printed before warning messages, if any. */ |
123 | ||
69bbf465 | 124 | const char *warning_pre_print = "\nwarning: "; |
c906108c SS |
125 | |
126 | int pagination_enabled = 1; | |
920d2a44 AC |
127 | static void |
128 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
129 | struct cmd_list_element *c, const char *value) | |
130 | { | |
131 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
132 | } | |
133 | ||
c906108c | 134 | \f |
c27f5738 | 135 | /* Cleanup utilities. |
c5aa993b | 136 | |
c27f5738 DE |
137 | These are not defined in cleanups.c (nor declared in cleanups.h) |
138 | because while they use the "cleanup API" they are not part of the | |
139 | "cleanup API". */ | |
7a292a7a | 140 | |
7b90c3f9 JB |
141 | static void |
142 | do_free_section_addr_info (void *arg) | |
143 | { | |
19ba03f4 | 144 | free_section_addr_info ((struct section_addr_info *) arg); |
7b90c3f9 JB |
145 | } |
146 | ||
147 | struct cleanup * | |
148 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) | |
149 | { | |
e0088cfd | 150 | return make_cleanup (do_free_section_addr_info, addrs); |
7b90c3f9 JB |
151 | } |
152 | ||
c0edd9ed JK |
153 | /* Helper for make_cleanup_unpush_target. */ |
154 | ||
155 | static void | |
156 | do_unpush_target (void *arg) | |
157 | { | |
19ba03f4 | 158 | struct target_ops *ops = (struct target_ops *) arg; |
c0edd9ed JK |
159 | |
160 | unpush_target (ops); | |
161 | } | |
162 | ||
163 | /* Return a new cleanup that unpushes OPS. */ | |
164 | ||
165 | struct cleanup * | |
166 | make_cleanup_unpush_target (struct target_ops *ops) | |
167 | { | |
e0088cfd | 168 | return make_cleanup (do_unpush_target, ops); |
c0edd9ed JK |
169 | } |
170 | ||
028d0ed5 TJB |
171 | /* Helper for make_cleanup_value_free_to_mark. */ |
172 | ||
173 | static void | |
174 | do_value_free_to_mark (void *value) | |
175 | { | |
176 | value_free_to_mark ((struct value *) value); | |
177 | } | |
178 | ||
179 | /* Free all values allocated since MARK was obtained by value_mark | |
180 | (except for those released) when the cleanup is run. */ | |
181 | ||
182 | struct cleanup * | |
183 | make_cleanup_value_free_to_mark (struct value *mark) | |
184 | { | |
e0088cfd | 185 | return make_cleanup (do_value_free_to_mark, mark); |
028d0ed5 TJB |
186 | } |
187 | ||
72fc29ff TT |
188 | /* Helper for make_cleanup_value_free. */ |
189 | ||
190 | static void | |
191 | do_value_free (void *value) | |
192 | { | |
19ba03f4 | 193 | value_free ((struct value *) value); |
72fc29ff TT |
194 | } |
195 | ||
196 | /* Free VALUE. */ | |
197 | ||
198 | struct cleanup * | |
199 | make_cleanup_value_free (struct value *value) | |
200 | { | |
e0088cfd | 201 | return make_cleanup (do_value_free, value); |
72fc29ff TT |
202 | } |
203 | ||
c906108c SS |
204 | /* This function is useful for cleanups. |
205 | Do | |
206 | ||
c5aa993b JM |
207 | foo = xmalloc (...); |
208 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
209 | |
210 | to arrange to free the object thus allocated. */ | |
211 | ||
212 | void | |
2f9429ae | 213 | free_current_contents (void *ptr) |
c906108c | 214 | { |
19ba03f4 | 215 | void **location = (void **) ptr; |
e0627e85 | 216 | |
e2f9c474 | 217 | if (location == NULL) |
8e65ff28 | 218 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 219 | _("free_current_contents: NULL pointer")); |
2f9429ae | 220 | if (*location != NULL) |
e2f9c474 | 221 | { |
b8c9b27d | 222 | xfree (*location); |
e2f9c474 AC |
223 | *location = NULL; |
224 | } | |
c906108c | 225 | } |
c906108c | 226 | \f |
c5aa993b | 227 | |
8731e58e | 228 | |
f5a96129 AC |
229 | /* Print a warning message. The first argument STRING is the warning |
230 | message, used as an fprintf format string, the second is the | |
231 | va_list of arguments for that string. A warning is unfiltered (not | |
232 | paginated) so that the user does not need to page through each | |
233 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
234 | |
235 | void | |
f5a96129 | 236 | vwarning (const char *string, va_list args) |
c906108c | 237 | { |
9a4105ab AC |
238 | if (deprecated_warning_hook) |
239 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
240 | else |
241 | { | |
223ffa71 | 242 | gdb::optional<target_terminal::scoped_restore_terminal_state> term_state; |
0d2f5c07 | 243 | if (target_supports_terminal_ours ()) |
c5ac1540 | 244 | { |
223ffa71 TT |
245 | term_state.emplace (); |
246 | target_terminal::ours_for_output (); | |
c5ac1540 | 247 | } |
0d2f5c07 GB |
248 | if (filtered_printing_initialized ()) |
249 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
250 | gdb_flush (gdb_stdout); |
251 | if (warning_pre_print) | |
306d9ac5 | 252 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
253 | vfprintf_unfiltered (gdb_stderr, string, args); |
254 | fprintf_unfiltered (gdb_stderr, "\n"); | |
f5a96129 | 255 | } |
c906108c SS |
256 | } |
257 | ||
c906108c SS |
258 | /* Print an error message and return to command level. |
259 | The first argument STRING is the error message, used as a fprintf string, | |
260 | and the remaining args are passed as arguments to it. */ | |
261 | ||
c25c4a8b | 262 | void |
4ce44c66 JM |
263 | verror (const char *string, va_list args) |
264 | { | |
6b1b7650 | 265 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
266 | } |
267 | ||
c25c4a8b | 268 | void |
d7e74731 | 269 | error_stream (const string_file &stream) |
2acceee2 | 270 | { |
d7e74731 | 271 | error (("%s"), stream.c_str ()); |
2acceee2 | 272 | } |
c906108c | 273 | |
2437fd32 GB |
274 | /* Emit a message and abort. */ |
275 | ||
276 | static void ATTRIBUTE_NORETURN | |
277 | abort_with_message (const char *msg) | |
278 | { | |
72542b8e | 279 | if (current_ui == NULL) |
2437fd32 GB |
280 | fputs (msg, stderr); |
281 | else | |
282 | fputs_unfiltered (msg, gdb_stderr); | |
283 | ||
284 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
285 | } | |
286 | ||
7991dee7 JK |
287 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
288 | ||
eae7090b | 289 | void |
7991dee7 JK |
290 | dump_core (void) |
291 | { | |
292 | #ifdef HAVE_SETRLIMIT | |
293 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; | |
294 | ||
295 | setrlimit (RLIMIT_CORE, &rlim); | |
296 | #endif /* HAVE_SETRLIMIT */ | |
297 | ||
298 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
299 | } | |
300 | ||
3e43a32a | 301 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
302 | function. Returns zero if GDB cannot or should not dump core. |
303 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
304 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 305 | |
eae7090b GB |
306 | int |
307 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
308 | { |
309 | #ifdef HAVE_GETRLIMIT | |
310 | struct rlimit rlim; | |
311 | ||
312 | /* Be quiet and assume we can dump if an error is returned. */ | |
313 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
314 | return 1; | |
315 | ||
eae7090b | 316 | switch (limit_kind) |
7991dee7 | 317 | { |
eae7090b GB |
318 | case LIMIT_CUR: |
319 | if (rlim.rlim_cur == 0) | |
320 | return 0; | |
321 | ||
322 | case LIMIT_MAX: | |
323 | if (rlim.rlim_max == 0) | |
324 | return 0; | |
7991dee7 JK |
325 | } |
326 | #endif /* HAVE_GETRLIMIT */ | |
327 | ||
328 | return 1; | |
329 | } | |
330 | ||
eae7090b GB |
331 | /* Print a warning that we cannot dump core. */ |
332 | ||
333 | void | |
334 | warn_cant_dump_core (const char *reason) | |
335 | { | |
336 | fprintf_unfiltered (gdb_stderr, | |
337 | _("%s\nUnable to dump core, use `ulimit -c" | |
338 | " unlimited' before executing GDB next time.\n"), | |
339 | reason); | |
340 | } | |
341 | ||
342 | /* Check whether GDB will be able to dump core using the dump_core | |
343 | function, and print a warning if we cannot. */ | |
344 | ||
345 | static int | |
346 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
347 | const char *reason) | |
348 | { | |
349 | int core_dump_allowed = can_dump_core (limit_kind); | |
350 | ||
351 | if (!core_dump_allowed) | |
352 | warn_cant_dump_core (reason); | |
353 | ||
354 | return core_dump_allowed; | |
355 | } | |
356 | ||
3c16cced PA |
357 | /* Allow the user to configure the debugger behavior with respect to |
358 | what to do when an internal problem is detected. */ | |
359 | ||
360 | const char internal_problem_ask[] = "ask"; | |
361 | const char internal_problem_yes[] = "yes"; | |
362 | const char internal_problem_no[] = "no"; | |
40478521 | 363 | static const char *const internal_problem_modes[] = |
3c16cced PA |
364 | { |
365 | internal_problem_ask, | |
366 | internal_problem_yes, | |
367 | internal_problem_no, | |
368 | NULL | |
369 | }; | |
3c16cced | 370 | |
581e13c1 | 371 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
372 | if they want to continue, dump core, or just exit. Return |
373 | something to indicate a quit. */ | |
c906108c | 374 | |
dec43320 | 375 | struct internal_problem |
c906108c | 376 | { |
dec43320 | 377 | const char *name; |
57fcfb1b | 378 | int user_settable_should_quit; |
3c16cced | 379 | const char *should_quit; |
57fcfb1b | 380 | int user_settable_should_dump_core; |
3c16cced | 381 | const char *should_dump_core; |
dec43320 AC |
382 | }; |
383 | ||
384 | /* Report a problem, internal to GDB, to the user. Once the problem | |
385 | has been reported, and assuming GDB didn't quit, the caller can | |
386 | either allow execution to resume or throw an error. */ | |
387 | ||
a0b31db1 | 388 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 389 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 390 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 391 | { |
dec43320 | 392 | static int dejavu; |
375fc983 | 393 | int quit_p; |
7be570e7 | 394 | int dump_core_p; |
e05550d7 | 395 | std::string reason; |
c906108c | 396 | |
dec43320 | 397 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
398 | { |
399 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 400 | |
714b1282 AC |
401 | switch (dejavu) |
402 | { | |
403 | case 0: | |
404 | dejavu = 1; | |
405 | break; | |
406 | case 1: | |
407 | dejavu = 2; | |
2437fd32 | 408 | abort_with_message (msg); |
714b1282 AC |
409 | default: |
410 | dejavu = 3; | |
bf1d7d9c JB |
411 | /* Newer GLIBC versions put the warn_unused_result attribute |
412 | on write, but this is one of those rare cases where | |
413 | ignoring the return value is correct. Casting to (void) | |
414 | does not fix this problem. This is the solution suggested | |
415 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
416 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 417 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
418 | exit (1); |
419 | } | |
420 | } | |
c906108c | 421 | |
714b1282 AC |
422 | /* Create a string containing the full error/warning message. Need |
423 | to call query with this full string, as otherwize the reason | |
424 | (error/warning) and question become separated. Format using a | |
425 | style similar to a compiler error message. Include extra detail | |
426 | so that the user knows that they are living on the edge. */ | |
427 | { | |
f8bfbf22 | 428 | std::string msg = string_vprintf (fmt, ap); |
e05550d7 TT |
429 | reason = string_printf ("%s:%d: %s: %s\n" |
430 | "A problem internal to GDB has been detected,\n" | |
431 | "further debugging may prove unreliable.", | |
432 | file, line, problem->name, msg.c_str ()); | |
714b1282 | 433 | } |
7be570e7 | 434 | |
2437fd32 | 435 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
72542b8e | 436 | if (current_ui == NULL) |
2437fd32 | 437 | { |
e05550d7 | 438 | fputs (reason.c_str (), stderr); |
2437fd32 GB |
439 | abort_with_message ("\n"); |
440 | } | |
441 | ||
442 | /* Try to get the message out and at the start of a new line. */ | |
223ffa71 | 443 | gdb::optional<target_terminal::scoped_restore_terminal_state> term_state; |
2437fd32 | 444 | if (target_supports_terminal_ours ()) |
c5ac1540 | 445 | { |
223ffa71 TT |
446 | term_state.emplace (); |
447 | target_terminal::ours_for_output (); | |
c5ac1540 | 448 | } |
2437fd32 GB |
449 | if (filtered_printing_initialized ()) |
450 | begin_line (); | |
451 | ||
196a707b | 452 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
453 | if (problem->should_quit != internal_problem_ask |
454 | || !confirm | |
455 | || !filtered_printing_initialized ()) | |
e05550d7 | 456 | fprintf_unfiltered (gdb_stderr, "%s\n", reason.c_str ()); |
196a707b | 457 | |
3c16cced | 458 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 459 | { |
dec43320 | 460 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
461 | this lessens the likelihood of GDB going into an infinite |
462 | loop. */ | |
2437fd32 | 463 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 464 | quit_p = 1; |
26bb68be | 465 | else |
e05550d7 TT |
466 | quit_p = query (_("%s\nQuit this debugging session? "), |
467 | reason.c_str ()); | |
dec43320 | 468 | } |
3c16cced PA |
469 | else if (problem->should_quit == internal_problem_yes) |
470 | quit_p = 1; | |
471 | else if (problem->should_quit == internal_problem_no) | |
472 | quit_p = 0; | |
473 | else | |
474 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 475 | |
add6c04d GB |
476 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
477 | if (REPORT_BUGS_TO[0]) | |
478 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
479 | REPORT_BUGS_TO); | |
480 | fputs_unfiltered ("\n\n", gdb_stderr); | |
481 | ||
3c16cced | 482 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 483 | { |
e05550d7 | 484 | if (!can_dump_core_warn (LIMIT_MAX, reason.c_str ())) |
7991dee7 | 485 | dump_core_p = 0; |
2437fd32 GB |
486 | else if (!filtered_printing_initialized ()) |
487 | dump_core_p = 1; | |
7991dee7 JK |
488 | else |
489 | { | |
490 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
491 | `dropping' so that it is easier to see that something went | |
492 | wrong in GDB. */ | |
e05550d7 TT |
493 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), |
494 | reason.c_str ()); | |
7991dee7 | 495 | } |
dec43320 | 496 | } |
3c16cced | 497 | else if (problem->should_dump_core == internal_problem_yes) |
e05550d7 | 498 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason.c_str ()); |
3c16cced PA |
499 | else if (problem->should_dump_core == internal_problem_no) |
500 | dump_core_p = 0; | |
501 | else | |
502 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 503 | |
375fc983 | 504 | if (quit_p) |
7be570e7 JM |
505 | { |
506 | if (dump_core_p) | |
7991dee7 | 507 | dump_core (); |
375fc983 AC |
508 | else |
509 | exit (1); | |
7be570e7 JM |
510 | } |
511 | else | |
512 | { | |
513 | if (dump_core_p) | |
375fc983 | 514 | { |
9b265ec2 | 515 | #ifdef HAVE_WORKING_FORK |
375fc983 | 516 | if (fork () == 0) |
7991dee7 | 517 | dump_core (); |
9b265ec2 | 518 | #endif |
375fc983 | 519 | } |
7be570e7 | 520 | } |
96baa820 JM |
521 | |
522 | dejavu = 0; | |
dec43320 AC |
523 | } |
524 | ||
525 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 526 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
527 | }; |
528 | ||
c25c4a8b | 529 | void |
8731e58e | 530 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
531 | { |
532 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 533 | throw_quit (_("Command aborted.")); |
c906108c SS |
534 | } |
535 | ||
dec43320 | 536 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 537 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
538 | }; |
539 | ||
540 | void | |
8731e58e | 541 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
542 | { |
543 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
544 | } | |
545 | ||
57fcfb1b GB |
546 | static struct internal_problem demangler_warning_problem = { |
547 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
548 | }; | |
549 | ||
550 | void | |
551 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
552 | { | |
553 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
554 | } | |
555 | ||
556 | void | |
557 | demangler_warning (const char *file, int line, const char *string, ...) | |
558 | { | |
559 | va_list ap; | |
560 | ||
561 | va_start (ap, string); | |
562 | demangler_vwarning (file, line, string, ap); | |
563 | va_end (ap); | |
564 | } | |
565 | ||
3c16cced PA |
566 | /* Dummy functions to keep add_prefix_cmd happy. */ |
567 | ||
568 | static void | |
569 | set_internal_problem_cmd (char *args, int from_tty) | |
570 | { | |
571 | } | |
572 | ||
573 | static void | |
574 | show_internal_problem_cmd (char *args, int from_tty) | |
575 | { | |
576 | } | |
577 | ||
578 | /* When GDB reports an internal problem (error or warning) it gives | |
579 | the user the opportunity to quit GDB and/or create a core file of | |
580 | the current debug session. This function registers a few commands | |
581 | that make it possible to specify that GDB should always or never | |
582 | quit or create a core file, without asking. The commands look | |
583 | like: | |
584 | ||
585 | maint set PROBLEM-NAME quit ask|yes|no | |
586 | maint show PROBLEM-NAME quit | |
587 | maint set PROBLEM-NAME corefile ask|yes|no | |
588 | maint show PROBLEM-NAME corefile | |
589 | ||
590 | Where PROBLEM-NAME is currently "internal-error" or | |
591 | "internal-warning". */ | |
592 | ||
593 | static void | |
594 | add_internal_problem_command (struct internal_problem *problem) | |
595 | { | |
596 | struct cmd_list_element **set_cmd_list; | |
597 | struct cmd_list_element **show_cmd_list; | |
598 | char *set_doc; | |
599 | char *show_doc; | |
600 | ||
8d749320 SM |
601 | set_cmd_list = XNEW (struct cmd_list_element *); |
602 | show_cmd_list = XNEW (struct cmd_list_element *); | |
3c16cced PA |
603 | *set_cmd_list = NULL; |
604 | *show_cmd_list = NULL; | |
605 | ||
606 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
607 | problem->name); | |
608 | ||
609 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
610 | problem->name); | |
611 | ||
612 | add_prefix_cmd ((char*) problem->name, | |
613 | class_maintenance, set_internal_problem_cmd, set_doc, | |
614 | set_cmd_list, | |
c4f7c687 MK |
615 | concat ("maintenance set ", problem->name, " ", |
616 | (char *) NULL), | |
3c16cced PA |
617 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
618 | ||
619 | add_prefix_cmd ((char*) problem->name, | |
620 | class_maintenance, show_internal_problem_cmd, show_doc, | |
621 | show_cmd_list, | |
c4f7c687 MK |
622 | concat ("maintenance show ", problem->name, " ", |
623 | (char *) NULL), | |
3c16cced PA |
624 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
625 | ||
57fcfb1b GB |
626 | if (problem->user_settable_should_quit) |
627 | { | |
628 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
629 | "when an %s is detected"), | |
630 | problem->name); | |
631 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
632 | "when an %s is detected"), | |
633 | problem->name); | |
634 | add_setshow_enum_cmd ("quit", class_maintenance, | |
635 | internal_problem_modes, | |
636 | &problem->should_quit, | |
637 | set_doc, | |
638 | show_doc, | |
639 | NULL, /* help_doc */ | |
640 | NULL, /* setfunc */ | |
641 | NULL, /* showfunc */ | |
642 | set_cmd_list, | |
643 | show_cmd_list); | |
644 | ||
645 | xfree (set_doc); | |
646 | xfree (show_doc); | |
647 | } | |
1eefb858 | 648 | |
57fcfb1b GB |
649 | if (problem->user_settable_should_dump_core) |
650 | { | |
651 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
652 | "file of GDB when %s is detected"), | |
653 | problem->name); | |
654 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
655 | "file of GDB when %s is detected"), | |
656 | problem->name); | |
657 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
658 | internal_problem_modes, | |
659 | &problem->should_dump_core, | |
660 | set_doc, | |
661 | show_doc, | |
662 | NULL, /* help_doc */ | |
663 | NULL, /* setfunc */ | |
664 | NULL, /* showfunc */ | |
665 | set_cmd_list, | |
666 | show_cmd_list); | |
667 | ||
668 | xfree (set_doc); | |
669 | xfree (show_doc); | |
670 | } | |
3c16cced PA |
671 | } |
672 | ||
0cf4063e | 673 | /* Return a newly allocated string, containing the PREFIX followed |
18e9961f | 674 | by the system error message for errno (separated by a colon). */ |
0cf4063e | 675 | |
18e9961f | 676 | static std::string |
0cf4063e JB |
677 | perror_string (const char *prefix) |
678 | { | |
679 | char *err; | |
0cf4063e JB |
680 | |
681 | err = safe_strerror (errno); | |
18e9961f | 682 | return std::string (prefix) + ": " + err; |
0cf4063e JB |
683 | } |
684 | ||
c906108c | 685 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
686 | as the file name for which the error was encountered. Use ERRCODE |
687 | for the thrown exception. Then return to command level. */ | |
c906108c | 688 | |
c25c4a8b | 689 | void |
598d3636 | 690 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 691 | { |
18e9961f | 692 | std::string combined = perror_string (string); |
c906108c SS |
693 | |
694 | /* I understand setting these is a matter of taste. Still, some people | |
695 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 696 | unreasonable. */ |
c906108c SS |
697 | bfd_set_error (bfd_error_no_error); |
698 | errno = 0; | |
699 | ||
18e9961f | 700 | throw_error (errcode, _("%s."), combined.c_str ()); |
598d3636 JK |
701 | } |
702 | ||
703 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
704 | ||
705 | void | |
706 | perror_with_name (const char *string) | |
707 | { | |
708 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
709 | } |
710 | ||
7c647d61 JB |
711 | /* Same as perror_with_name except that it prints a warning instead |
712 | of throwing an error. */ | |
713 | ||
714 | void | |
715 | perror_warning_with_name (const char *string) | |
716 | { | |
18e9961f TT |
717 | std::string combined = perror_string (string); |
718 | warning (_("%s"), combined.c_str ()); | |
7c647d61 JB |
719 | } |
720 | ||
c906108c SS |
721 | /* Print the system error message for ERRCODE, and also mention STRING |
722 | as the file name for which the error was encountered. */ | |
723 | ||
724 | void | |
6972bc8b | 725 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
726 | { |
727 | char *err; | |
728 | char *combined; | |
729 | ||
730 | err = safe_strerror (errcode); | |
731 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
732 | strcpy (combined, string); | |
733 | strcat (combined, ": "); | |
734 | strcat (combined, err); | |
735 | ||
736 | /* We want anything which was printed on stdout to come out first, before | |
737 | this message. */ | |
738 | gdb_flush (gdb_stdout); | |
739 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
740 | } | |
741 | ||
742 | /* Control C eventually causes this to be called, at a convenient time. */ | |
743 | ||
744 | void | |
fba45db2 | 745 | quit (void) |
c906108c | 746 | { |
f38d3ad1 PA |
747 | struct ui *ui = current_ui; |
748 | ||
06c868a8 JK |
749 | if (sync_quit_force_run) |
750 | { | |
751 | sync_quit_force_run = 0; | |
268a799a | 752 | quit_force (NULL, 0); |
06c868a8 JK |
753 | } |
754 | ||
7be570e7 JM |
755 | #ifdef __MSDOS__ |
756 | /* No steenking SIGINT will ever be coming our way when the | |
757 | program is resumed. Don't lie. */ | |
2c51604d | 758 | throw_quit ("Quit"); |
7be570e7 | 759 | #else |
c906108c | 760 | if (job_control |
8731e58e AC |
761 | /* If there is no terminal switching for this target, then we can't |
762 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 763 | || !target_supports_terminal_ours ()) |
2c51604d | 764 | throw_quit ("Quit"); |
c906108c | 765 | else |
2c51604d | 766 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 767 | #endif |
c906108c SS |
768 | } |
769 | ||
abc56d60 PA |
770 | /* See defs.h. */ |
771 | ||
772 | void | |
773 | maybe_quit (void) | |
774 | { | |
048094ac | 775 | if (sync_quit_force_run) |
abc56d60 | 776 | quit (); |
048094ac PA |
777 | |
778 | quit_handler (); | |
779 | ||
abc56d60 PA |
780 | if (deprecated_interactive_hook) |
781 | deprecated_interactive_hook (); | |
abc56d60 PA |
782 | } |
783 | ||
c906108c | 784 | \f |
c906108c | 785 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 786 | memory requested in SIZE. */ |
c906108c | 787 | |
c25c4a8b | 788 | void |
d26e3629 | 789 | malloc_failure (long size) |
c906108c SS |
790 | { |
791 | if (size > 0) | |
792 | { | |
8e65ff28 | 793 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 794 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 795 | size); |
c906108c SS |
796 | } |
797 | else | |
798 | { | |
e2e0b3e5 | 799 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
800 | } |
801 | } | |
802 | ||
c906108c SS |
803 | /* My replacement for the read system call. |
804 | Used like `read' but keeps going if `read' returns too soon. */ | |
805 | ||
806 | int | |
fba45db2 | 807 | myread (int desc, char *addr, int len) |
c906108c | 808 | { |
52f0bd74 | 809 | int val; |
c906108c SS |
810 | int orglen = len; |
811 | ||
812 | while (len > 0) | |
813 | { | |
814 | val = read (desc, addr, len); | |
815 | if (val < 0) | |
816 | return val; | |
817 | if (val == 0) | |
818 | return orglen - len; | |
819 | len -= val; | |
820 | addr += val; | |
821 | } | |
822 | return orglen; | |
823 | } | |
d26e3629 | 824 | |
c906108c | 825 | void |
aa1ee363 | 826 | print_spaces (int n, struct ui_file *file) |
c906108c | 827 | { |
392a587b | 828 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
829 | } |
830 | ||
831 | /* Print a host address. */ | |
832 | ||
833 | void | |
b80c3053 | 834 | gdb_print_host_address_1 (const void *addr, struct ui_file *stream) |
c906108c | 835 | { |
ea8992ce | 836 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 837 | } |
7c50a931 DE |
838 | |
839 | /* See utils.h. */ | |
840 | ||
841 | char * | |
842 | make_hex_string (const gdb_byte *data, size_t length) | |
843 | { | |
224c3ddb | 844 | char *result = (char *) xmalloc (length * 2 + 1); |
7c50a931 DE |
845 | char *p; |
846 | size_t i; | |
847 | ||
848 | p = result; | |
849 | for (i = 0; i < length; ++i) | |
dc4d6886 | 850 | p += xsnprintf (p, 3, "%02x", data[i]); |
7c50a931 DE |
851 | *p = '\0'; |
852 | return result; | |
853 | } | |
854 | ||
c906108c | 855 | \f |
c5aa993b | 856 | |
223ffa71 TT |
857 | /* An RAII class that sets up to handle input and then tears down |
858 | during destruction. */ | |
3eb7562a | 859 | |
223ffa71 | 860 | class scoped_input_handler |
3eb7562a | 861 | { |
223ffa71 | 862 | public: |
3eb7562a | 863 | |
223ffa71 | 864 | scoped_input_handler () |
c2f97536 | 865 | : m_quit_handler (&quit_handler, default_quit_handler), |
223ffa71 TT |
866 | m_ui (NULL) |
867 | { | |
868 | target_terminal::ours (); | |
869 | ui_register_input_event_handler (current_ui); | |
870 | if (current_ui->prompt_state == PROMPT_BLOCKED) | |
871 | m_ui = current_ui; | |
872 | } | |
3eb7562a | 873 | |
223ffa71 TT |
874 | ~scoped_input_handler () |
875 | { | |
876 | if (m_ui != NULL) | |
877 | ui_unregister_input_event_handler (m_ui); | |
878 | } | |
3eb7562a | 879 | |
223ffa71 | 880 | DISABLE_COPY_AND_ASSIGN (scoped_input_handler); |
3eb7562a | 881 | |
223ffa71 | 882 | private: |
3eb7562a | 883 | |
223ffa71 TT |
884 | /* Save and restore the terminal state. */ |
885 | target_terminal::scoped_restore_terminal_state m_term_state; | |
3eb7562a | 886 | |
223ffa71 | 887 | /* Save and restore the quit handler. */ |
c2f97536 | 888 | scoped_restore_tmpl<quit_handler_ftype *> m_quit_handler; |
223ffa71 TT |
889 | |
890 | /* The saved UI, if non-NULL. */ | |
891 | struct ui *m_ui; | |
892 | }; | |
3eb7562a | 893 | |
db1ff28b JK |
894 | \f |
895 | ||
981c7f5a | 896 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 897 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
898 | answer is yes, or default the answer to the specified default |
899 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
900 | default answer, or '\0' for no default. | |
cbdeadca JJ |
901 | CTLSTR is the control string and should end in "? ". It should |
902 | not say how to answer, because we do that. | |
903 | ARGS are the arguments passed along with the CTLSTR argument to | |
904 | printf. */ | |
905 | ||
a0b31db1 | 906 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
907 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
908 | { | |
cbdeadca JJ |
909 | int ans2; |
910 | int retval; | |
911 | int def_value; | |
912 | char def_answer, not_def_answer; | |
a121b7c1 | 913 | const char *y_string, *n_string; |
cbdeadca JJ |
914 | |
915 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
916 | if (defchar == '\0') |
917 | { | |
918 | def_value = 1; | |
919 | def_answer = 'Y'; | |
920 | not_def_answer = 'N'; | |
921 | y_string = "y"; | |
922 | n_string = "n"; | |
923 | } | |
924 | else if (defchar == 'y') | |
cbdeadca JJ |
925 | { |
926 | def_value = 1; | |
927 | def_answer = 'Y'; | |
928 | not_def_answer = 'N'; | |
929 | y_string = "[y]"; | |
930 | n_string = "n"; | |
931 | } | |
932 | else | |
933 | { | |
934 | def_value = 0; | |
935 | def_answer = 'N'; | |
936 | not_def_answer = 'Y'; | |
937 | y_string = "y"; | |
938 | n_string = "[n]"; | |
939 | } | |
940 | ||
981c7f5a | 941 | /* Automatically answer the default value if the user did not want |
a502cf95 | 942 | prompts or the command was issued with the server prefix. */ |
e360902b | 943 | if (!confirm || server_command) |
981c7f5a DJ |
944 | return def_value; |
945 | ||
946 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 947 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
948 | way, important error messages don't get lost when talking to GDB |
949 | over a pipe. */ | |
268a799a | 950 | if (current_ui->instream != current_ui->stdin_stream |
26a06916 SM |
951 | || !input_interactive_p (current_ui) |
952 | /* Restrict queries to the main UI. */ | |
953 | || current_ui != main_ui) | |
981c7f5a | 954 | { |
223ffa71 TT |
955 | target_terminal::scoped_restore_terminal_state term_state; |
956 | target_terminal::ours_for_output (); | |
981c7f5a DJ |
957 | wrap_here (""); |
958 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
959 | ||
3e43a32a MS |
960 | printf_filtered (_("(%s or %s) [answered %c; " |
961 | "input not from terminal]\n"), | |
981c7f5a DJ |
962 | y_string, n_string, def_answer); |
963 | gdb_flush (gdb_stdout); | |
964 | ||
965 | return def_value; | |
966 | } | |
967 | ||
9a4105ab | 968 | if (deprecated_query_hook) |
cbdeadca | 969 | { |
223ffa71 TT |
970 | target_terminal::scoped_restore_terminal_state term_state; |
971 | return deprecated_query_hook (ctlstr, args); | |
651ce16a | 972 | } |
80dbc9fd | 973 | |
981c7f5a | 974 | /* Format the question outside of the loop, to avoid reusing args. */ |
e05550d7 TT |
975 | std::string question = string_vprintf (ctlstr, args); |
976 | std::string prompt | |
977 | = string_printf (_("%s%s(%s or %s) %s"), | |
978 | annotation_level > 1 ? "\n\032\032pre-query\n" : "", | |
979 | question.c_str (), y_string, n_string, | |
980 | annotation_level > 1 ? "\n\032\032query\n" : ""); | |
981c7f5a | 981 | |
dcb07cfa PA |
982 | /* Used to add duration we waited for user to respond to |
983 | prompt_for_continue_wait_time. */ | |
984 | using namespace std::chrono; | |
985 | steady_clock::time_point prompt_started = steady_clock::now (); | |
260c0b2a | 986 | |
223ffa71 | 987 | scoped_input_handler prepare_input; |
651ce16a | 988 | |
cbdeadca JJ |
989 | while (1) |
990 | { | |
588dcc3e | 991 | char *response, answer; |
cbdeadca | 992 | |
cbdeadca | 993 | gdb_flush (gdb_stdout); |
e05550d7 | 994 | response = gdb_readline_wrapper (prompt.c_str ()); |
cbdeadca | 995 | |
588dcc3e | 996 | if (response == NULL) /* C-d */ |
cbdeadca | 997 | { |
fa3fd85b | 998 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
999 | retval = def_value; |
1000 | break; | |
1001 | } | |
588dcc3e PP |
1002 | |
1003 | answer = response[0]; | |
1004 | xfree (response); | |
cbdeadca JJ |
1005 | |
1006 | if (answer >= 'a') | |
1007 | answer -= 040; | |
1008 | /* Check answer. For the non-default, the user must specify | |
1009 | the non-default explicitly. */ | |
1010 | if (answer == not_def_answer) | |
1011 | { | |
1012 | retval = !def_value; | |
1013 | break; | |
1014 | } | |
981c7f5a DJ |
1015 | /* Otherwise, if a default was specified, the user may either |
1016 | specify the required input or have it default by entering | |
1017 | nothing. */ | |
1018 | if (answer == def_answer | |
588dcc3e | 1019 | || (defchar != '\0' && answer == '\0')) |
cbdeadca JJ |
1020 | { |
1021 | retval = def_value; | |
1022 | break; | |
1023 | } | |
1024 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 1025 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
1026 | y_string, n_string); |
1027 | } | |
1028 | ||
260c0b2a | 1029 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1030 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1031 | |
cbdeadca | 1032 | if (annotation_level > 1) |
a3f17187 | 1033 | printf_filtered (("\n\032\032post-query\n")); |
cbdeadca JJ |
1034 | return retval; |
1035 | } | |
1036 | \f | |
1037 | ||
1038 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1039 | answer is yes, or 0 if answer is defaulted. | |
1040 | Takes three args which are given to printf to print the question. | |
1041 | The first, a control string, should end in "? ". | |
1042 | It should not say how to answer, because we do that. */ | |
1043 | ||
1044 | int | |
1045 | nquery (const char *ctlstr, ...) | |
1046 | { | |
1047 | va_list args; | |
899500d6 | 1048 | int ret; |
cbdeadca JJ |
1049 | |
1050 | va_start (args, ctlstr); | |
899500d6 | 1051 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 1052 | va_end (args); |
899500d6 | 1053 | return ret; |
cbdeadca JJ |
1054 | } |
1055 | ||
1056 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
1057 | answer is yes, or 1 if answer is defaulted. | |
1058 | Takes three args which are given to printf to print the question. | |
1059 | The first, a control string, should end in "? ". | |
1060 | It should not say how to answer, because we do that. */ | |
1061 | ||
1062 | int | |
1063 | yquery (const char *ctlstr, ...) | |
1064 | { | |
1065 | va_list args; | |
899500d6 | 1066 | int ret; |
cbdeadca JJ |
1067 | |
1068 | va_start (args, ctlstr); | |
899500d6 | 1069 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 1070 | va_end (args); |
899500d6 | 1071 | return ret; |
cbdeadca JJ |
1072 | } |
1073 | ||
981c7f5a DJ |
1074 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1075 | Takes three args which are given to printf to print the question. | |
1076 | The first, a control string, should end in "? ". | |
1077 | It should not say how to answer, because we do that. */ | |
1078 | ||
1079 | int | |
1080 | query (const char *ctlstr, ...) | |
1081 | { | |
1082 | va_list args; | |
899500d6 | 1083 | int ret; |
981c7f5a DJ |
1084 | |
1085 | va_start (args, ctlstr); | |
899500d6 | 1086 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1087 | va_end (args); |
899500d6 | 1088 | return ret; |
981c7f5a DJ |
1089 | } |
1090 | ||
6c7a06a3 TT |
1091 | /* A helper for parse_escape that converts a host character to a |
1092 | target character. C is the host character. If conversion is | |
1093 | possible, then the target character is stored in *TARGET_C and the | |
1094 | function returns 1. Otherwise, the function returns 0. */ | |
1095 | ||
1096 | static int | |
f870a310 | 1097 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1098 | { |
6c7a06a3 | 1099 | char the_char = c; |
6c7a06a3 | 1100 | int result = 0; |
234b45d4 | 1101 | |
8268c778 | 1102 | auto_obstack host_data; |
234b45d4 | 1103 | |
f870a310 | 1104 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1105 | (gdb_byte *) &the_char, 1, 1, |
1106 | &host_data, translit_none); | |
6c7a06a3 TT |
1107 | |
1108 | if (obstack_object_size (&host_data) == 1) | |
1109 | { | |
1110 | result = 1; | |
1111 | *target_c = *(char *) obstack_base (&host_data); | |
1112 | } | |
1113 | ||
6c7a06a3 | 1114 | return result; |
234b45d4 KB |
1115 | } |
1116 | ||
c906108c SS |
1117 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1118 | containing a pointer to the string to parse. That pointer | |
1119 | should point to the character after the \. That pointer | |
1120 | is updated past the characters we use. The value of the | |
1121 | escape sequence is returned. | |
1122 | ||
1123 | A negative value means the sequence \ newline was seen, | |
1124 | which is supposed to be equivalent to nothing at all. | |
1125 | ||
1126 | If \ is followed by a null character, we return a negative | |
1127 | value and leave the string pointer pointing at the null character. | |
1128 | ||
1129 | If \ is followed by 000, we return 0 and leave the string pointer | |
1130 | after the zeros. A value of 0 does not mean end of string. */ | |
1131 | ||
1132 | int | |
d7561cbb | 1133 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1134 | { |
581e13c1 | 1135 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1136 | int c = *(*string_ptr)++; |
e0627e85 | 1137 | |
6c7a06a3 TT |
1138 | switch (c) |
1139 | { | |
8731e58e AC |
1140 | case '\n': |
1141 | return -2; | |
1142 | case 0: | |
1143 | (*string_ptr)--; | |
1144 | return 0; | |
8731e58e AC |
1145 | |
1146 | case '0': | |
1147 | case '1': | |
1148 | case '2': | |
1149 | case '3': | |
1150 | case '4': | |
1151 | case '5': | |
1152 | case '6': | |
1153 | case '7': | |
1154 | { | |
6c7a06a3 | 1155 | int i = host_hex_value (c); |
aa1ee363 | 1156 | int count = 0; |
8731e58e AC |
1157 | while (++count < 3) |
1158 | { | |
5cb316ef | 1159 | c = (**string_ptr); |
6c7a06a3 | 1160 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1161 | { |
5cb316ef | 1162 | (*string_ptr)++; |
8731e58e | 1163 | i *= 8; |
6c7a06a3 | 1164 | i += host_hex_value (c); |
8731e58e AC |
1165 | } |
1166 | else | |
1167 | { | |
8731e58e AC |
1168 | break; |
1169 | } | |
1170 | } | |
1171 | return i; | |
1172 | } | |
6c7a06a3 TT |
1173 | |
1174 | case 'a': | |
1175 | c = '\a'; | |
1176 | break; | |
1177 | case 'b': | |
1178 | c = '\b'; | |
1179 | break; | |
1180 | case 'f': | |
1181 | c = '\f'; | |
1182 | break; | |
1183 | case 'n': | |
1184 | c = '\n'; | |
1185 | break; | |
1186 | case 'r': | |
1187 | c = '\r'; | |
1188 | break; | |
1189 | case 't': | |
1190 | c = '\t'; | |
1191 | break; | |
1192 | case 'v': | |
1193 | c = '\v'; | |
1194 | break; | |
1195 | ||
1196 | default: | |
1197 | break; | |
1198 | } | |
1199 | ||
f870a310 | 1200 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1201 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1202 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1203 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1204 | return target_char; |
c906108c SS |
1205 | } |
1206 | \f | |
1207 | /* Print the character C on STREAM as part of the contents of a literal | |
1208 | string whose delimiter is QUOTER. Note that this routine should only | |
f9acce4a | 1209 | be called for printing things which are independent of the language |
6ef284bd SM |
1210 | of the program being debugged. |
1211 | ||
1212 | printchar will normally escape backslashes and instances of QUOTER. If | |
1213 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1214 | As a side effect, if you pass the backslash character as the QUOTER, | |
1215 | printchar will escape backslashes as usual, but not any other quoting | |
1216 | character. */ | |
c906108c | 1217 | |
43e526b9 | 1218 | static void |
74f832da | 1219 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
bee0189a DJ |
1220 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
1221 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) | |
c906108c | 1222 | { |
c906108c SS |
1223 | c &= 0xFF; /* Avoid sign bit follies */ |
1224 | ||
c5aa993b JM |
1225 | if (c < 0x20 || /* Low control chars */ |
1226 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1227 | (sevenbit_strings && c >= 0x80)) | |
1228 | { /* high order bit set */ | |
1229 | switch (c) | |
1230 | { | |
1231 | case '\n': | |
43e526b9 | 1232 | do_fputs ("\\n", stream); |
c5aa993b JM |
1233 | break; |
1234 | case '\b': | |
43e526b9 | 1235 | do_fputs ("\\b", stream); |
c5aa993b JM |
1236 | break; |
1237 | case '\t': | |
43e526b9 | 1238 | do_fputs ("\\t", stream); |
c5aa993b JM |
1239 | break; |
1240 | case '\f': | |
43e526b9 | 1241 | do_fputs ("\\f", stream); |
c5aa993b JM |
1242 | break; |
1243 | case '\r': | |
43e526b9 | 1244 | do_fputs ("\\r", stream); |
c5aa993b JM |
1245 | break; |
1246 | case '\033': | |
43e526b9 | 1247 | do_fputs ("\\e", stream); |
c5aa993b JM |
1248 | break; |
1249 | case '\007': | |
43e526b9 | 1250 | do_fputs ("\\a", stream); |
c5aa993b JM |
1251 | break; |
1252 | default: | |
43e526b9 | 1253 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1254 | break; |
1255 | } | |
1256 | } | |
1257 | else | |
1258 | { | |
6ef284bd | 1259 | if (quoter != 0 && (c == '\\' || c == quoter)) |
43e526b9 JM |
1260 | do_fputs ("\\", stream); |
1261 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1262 | } |
c906108c | 1263 | } |
43e526b9 JM |
1264 | |
1265 | /* Print the character C on STREAM as part of the contents of a | |
1266 | literal string whose delimiter is QUOTER. Note that these routines | |
1267 | should only be call for printing things which are independent of | |
581e13c1 | 1268 | the language of the program being debugged. */ |
43e526b9 JM |
1269 | |
1270 | void | |
fba45db2 | 1271 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1272 | { |
1273 | while (*str) | |
1274 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1275 | } | |
1276 | ||
1277 | void | |
fba45db2 | 1278 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1279 | { |
1280 | while (*str) | |
1281 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1282 | } | |
1283 | ||
0876f84a DJ |
1284 | void |
1285 | fputstrn_filtered (const char *str, int n, int quoter, | |
1286 | struct ui_file *stream) | |
1287 | { | |
1288 | int i; | |
e0627e85 | 1289 | |
0876f84a DJ |
1290 | for (i = 0; i < n; i++) |
1291 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); | |
1292 | } | |
1293 | ||
43e526b9 | 1294 | void |
8731e58e AC |
1295 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1296 | struct ui_file *stream) | |
43e526b9 JM |
1297 | { |
1298 | int i; | |
5d502164 | 1299 | |
43e526b9 JM |
1300 | for (i = 0; i < n; i++) |
1301 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1302 | } | |
c906108c | 1303 | \f |
c5aa993b | 1304 | |
c906108c SS |
1305 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1306 | static unsigned int lines_per_page; | |
920d2a44 AC |
1307 | static void |
1308 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1309 | struct cmd_list_element *c, const char *value) | |
1310 | { | |
3e43a32a MS |
1311 | fprintf_filtered (file, |
1312 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1313 | value); |
1314 | } | |
eb0d3137 | 1315 | |
cbfbd72a | 1316 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1317 | static unsigned int chars_per_line; |
920d2a44 AC |
1318 | static void |
1319 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1320 | struct cmd_list_element *c, const char *value) | |
1321 | { | |
3e43a32a MS |
1322 | fprintf_filtered (file, |
1323 | _("Number of characters gdb thinks " | |
1324 | "are in a line is %s.\n"), | |
920d2a44 AC |
1325 | value); |
1326 | } | |
eb0d3137 | 1327 | |
c906108c SS |
1328 | /* Current count of lines printed on this page, chars on this line. */ |
1329 | static unsigned int lines_printed, chars_printed; | |
1330 | ||
1331 | /* Buffer and start column of buffered text, for doing smarter word- | |
1332 | wrapping. When someone calls wrap_here(), we start buffering output | |
1333 | that comes through fputs_filtered(). If we see a newline, we just | |
1334 | spit it out and forget about the wrap_here(). If we see another | |
1335 | wrap_here(), we spit it out and remember the newer one. If we see | |
1336 | the end of the line, we spit out a newline, the indent, and then | |
1337 | the buffered output. */ | |
1338 | ||
1339 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1340 | are waiting to be output (they have already been counted in chars_printed). | |
1341 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1342 | static char *wrap_buffer; | |
1343 | ||
1344 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1345 | static char *wrap_pointer; | |
1346 | ||
1347 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1348 | is non-zero. */ | |
d2c0eef4 | 1349 | static const char *wrap_indent; |
c906108c SS |
1350 | |
1351 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1352 | is not in effect. */ | |
1353 | static int wrap_column; | |
c906108c | 1354 | \f |
c5aa993b | 1355 | |
26c4b26f | 1356 | /* Initialize the number of lines per page and chars per line. */ |
eb0d3137 | 1357 | |
c906108c | 1358 | void |
fba45db2 | 1359 | init_page_info (void) |
c906108c | 1360 | { |
5da1313b JK |
1361 | if (batch_flag) |
1362 | { | |
1363 | lines_per_page = UINT_MAX; | |
1364 | chars_per_line = UINT_MAX; | |
1365 | } | |
1366 | else | |
c906108c | 1367 | #if defined(TUI) |
5ecb1806 | 1368 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1369 | #endif |
1370 | { | |
eb0d3137 | 1371 | int rows, cols; |
c906108c | 1372 | |
ec145965 EZ |
1373 | #if defined(__GO32__) |
1374 | rows = ScreenRows (); | |
1375 | cols = ScreenCols (); | |
1376 | lines_per_page = rows; | |
1377 | chars_per_line = cols; | |
1378 | #else | |
eb0d3137 MK |
1379 | /* Make sure Readline has initialized its terminal settings. */ |
1380 | rl_reset_terminal (NULL); | |
c906108c | 1381 | |
eb0d3137 MK |
1382 | /* Get the screen size from Readline. */ |
1383 | rl_get_screen_size (&rows, &cols); | |
1384 | lines_per_page = rows; | |
1385 | chars_per_line = cols; | |
c906108c | 1386 | |
1a66331e PM |
1387 | /* Readline should have fetched the termcap entry for us. |
1388 | Only try to use tgetnum function if rl_get_screen_size | |
1389 | did not return a useful value. */ | |
a121b7c1 | 1390 | if (((rows <= 0) && (tgetnum ((char *) "li") < 0)) |
e681cf3f EZ |
1391 | /* Also disable paging if inside Emacs. $EMACS was used |
1392 | before Emacs v25.1, $INSIDE_EMACS is used since then. */ | |
1393 | || getenv ("EMACS") || getenv ("INSIDE_EMACS")) | |
eb0d3137 | 1394 | { |
1a66331e PM |
1395 | /* The number of lines per page is not mentioned in the terminal |
1396 | description or EMACS evironment variable is set. This probably | |
1397 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1398 | lines_per_page = UINT_MAX; |
1399 | } | |
c906108c | 1400 | |
c906108c | 1401 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1402 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1403 | lines_per_page = UINT_MAX; |
eb0d3137 | 1404 | #endif |
ec145965 | 1405 | } |
eb0d3137 | 1406 | |
24b73f8e PP |
1407 | /* We handle SIGWINCH ourselves. */ |
1408 | rl_catch_sigwinch = 0; | |
1409 | ||
eb0d3137 | 1410 | set_screen_size (); |
c5aa993b | 1411 | set_width (); |
c906108c SS |
1412 | } |
1413 | ||
2437fd32 GB |
1414 | /* Return nonzero if filtered printing is initialized. */ |
1415 | int | |
1416 | filtered_printing_initialized (void) | |
1417 | { | |
1418 | return wrap_buffer != NULL; | |
1419 | } | |
1420 | ||
b95de2b7 TT |
1421 | set_batch_flag_and_restore_page_info::set_batch_flag_and_restore_page_info () |
1422 | : m_save_lines_per_page (lines_per_page), | |
1423 | m_save_chars_per_line (chars_per_line), | |
1424 | m_save_batch_flag (batch_flag) | |
5da1313b | 1425 | { |
b95de2b7 TT |
1426 | batch_flag = 1; |
1427 | init_page_info (); | |
5da1313b JK |
1428 | } |
1429 | ||
b95de2b7 | 1430 | set_batch_flag_and_restore_page_info::~set_batch_flag_and_restore_page_info () |
5da1313b | 1431 | { |
b95de2b7 TT |
1432 | batch_flag = m_save_batch_flag; |
1433 | chars_per_line = m_save_chars_per_line; | |
1434 | lines_per_page = m_save_lines_per_page; | |
5da1313b | 1435 | |
b95de2b7 TT |
1436 | set_screen_size (); |
1437 | set_width (); | |
5da1313b JK |
1438 | } |
1439 | ||
eb0d3137 MK |
1440 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1441 | ||
1442 | static void | |
1443 | set_screen_size (void) | |
1444 | { | |
1445 | int rows = lines_per_page; | |
1446 | int cols = chars_per_line; | |
1447 | ||
1448 | if (rows <= 0) | |
1449 | rows = INT_MAX; | |
1450 | ||
1451 | if (cols <= 0) | |
0caa462c | 1452 | cols = INT_MAX; |
eb0d3137 MK |
1453 | |
1454 | /* Update Readline's idea of the terminal size. */ | |
1455 | rl_set_screen_size (rows, cols); | |
1456 | } | |
1457 | ||
1458 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1459 | CHARS_PER_LINE. */ | |
1460 | ||
c906108c | 1461 | static void |
fba45db2 | 1462 | set_width (void) |
c906108c SS |
1463 | { |
1464 | if (chars_per_line == 0) | |
c5aa993b | 1465 | init_page_info (); |
c906108c SS |
1466 | |
1467 | if (!wrap_buffer) | |
1468 | { | |
1469 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1470 | wrap_buffer[0] = '\0'; | |
1471 | } | |
1472 | else | |
1473 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1474 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1475 | } |
1476 | ||
c5aa993b | 1477 | static void |
fba45db2 | 1478 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1479 | { |
eb0d3137 | 1480 | set_screen_size (); |
c906108c SS |
1481 | set_width (); |
1482 | } | |
1483 | ||
eb0d3137 MK |
1484 | static void |
1485 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1486 | { | |
1487 | set_screen_size (); | |
1488 | } | |
1489 | ||
d6e5e7f7 PP |
1490 | /* See utils.h. */ |
1491 | ||
1492 | void | |
1493 | set_screen_width_and_height (int width, int height) | |
1494 | { | |
1495 | lines_per_page = height; | |
1496 | chars_per_line = width; | |
1497 | ||
1498 | set_screen_size (); | |
1499 | set_width (); | |
1500 | } | |
1501 | ||
c906108c | 1502 | /* Wait, so the user can read what's on the screen. Prompt the user |
720d2e96 PA |
1503 | to continue by pressing RETURN. 'q' is also provided because |
1504 | telling users what to do in the prompt is more user-friendly than | |
1505 | expecting them to think of Ctrl-C/SIGINT. */ | |
c906108c SS |
1506 | |
1507 | static void | |
fba45db2 | 1508 | prompt_for_continue (void) |
c906108c SS |
1509 | { |
1510 | char *ignore; | |
1511 | char cont_prompt[120]; | |
dcb07cfa | 1512 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
260c0b2a DE |
1513 | /* Used to add duration we waited for user to respond to |
1514 | prompt_for_continue_wait_time. */ | |
dcb07cfa PA |
1515 | using namespace std::chrono; |
1516 | steady_clock::time_point prompt_started = steady_clock::now (); | |
c906108c SS |
1517 | |
1518 | if (annotation_level > 1) | |
a3f17187 | 1519 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1520 | |
1521 | strcpy (cont_prompt, | |
1522 | "---Type <return> to continue, or q <return> to quit---"); | |
1523 | if (annotation_level > 1) | |
1524 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1525 | ||
720d2e96 PA |
1526 | /* We must do this *before* we call gdb_readline_wrapper, else it |
1527 | will eventually call us -- thinking that we're trying to print | |
1528 | beyond the end of the screen. */ | |
c906108c SS |
1529 | reinitialize_more_filter (); |
1530 | ||
223ffa71 | 1531 | scoped_input_handler prepare_input; |
82584158 | 1532 | |
720d2e96 PA |
1533 | /* Call gdb_readline_wrapper, not readline, in order to keep an |
1534 | event loop running. */ | |
b4f5539f | 1535 | ignore = gdb_readline_wrapper (cont_prompt); |
80dbc9fd | 1536 | make_cleanup (xfree, ignore); |
c906108c | 1537 | |
260c0b2a | 1538 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1539 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1540 | |
c906108c | 1541 | if (annotation_level > 1) |
a3f17187 | 1542 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c | 1543 | |
80dbc9fd | 1544 | if (ignore != NULL) |
c906108c SS |
1545 | { |
1546 | char *p = ignore; | |
5d502164 | 1547 | |
c906108c SS |
1548 | while (*p == ' ' || *p == '\t') |
1549 | ++p; | |
1550 | if (p[0] == 'q') | |
1690b616 SL |
1551 | /* Do not call quit here; there is no possibility of SIGINT. */ |
1552 | throw_quit ("Quit"); | |
c906108c | 1553 | } |
c906108c SS |
1554 | |
1555 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1556 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1557 | reinitialize_more_filter (); | |
1558 | ||
581e13c1 | 1559 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
80dbc9fd PA |
1560 | |
1561 | do_cleanups (old_chain); | |
c906108c SS |
1562 | } |
1563 | ||
26c4b26f | 1564 | /* Initialize timer to keep track of how long we waited for the user. */ |
bd712aed DE |
1565 | |
1566 | void | |
1567 | reset_prompt_for_continue_wait_time (void) | |
1568 | { | |
dcb07cfa | 1569 | using namespace std::chrono; |
bd712aed | 1570 | |
dcb07cfa | 1571 | prompt_for_continue_wait_time = steady_clock::duration::zero (); |
bd712aed DE |
1572 | } |
1573 | ||
1574 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1575 | ||
dcb07cfa PA |
1576 | std::chrono::steady_clock::duration |
1577 | get_prompt_for_continue_wait_time () | |
bd712aed DE |
1578 | { |
1579 | return prompt_for_continue_wait_time; | |
1580 | } | |
1581 | ||
c906108c SS |
1582 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1583 | ||
1584 | void | |
fba45db2 | 1585 | reinitialize_more_filter (void) |
c906108c SS |
1586 | { |
1587 | lines_printed = 0; | |
1588 | chars_printed = 0; | |
1589 | } | |
1590 | ||
1591 | /* Indicate that if the next sequence of characters overflows the line, | |
581e13c1 | 1592 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1593 | If INDENT is non-null, it is a string to be printed to indent the |
1594 | wrapped part on the next line. INDENT must remain accessible until | |
1595 | the next call to wrap_here() or until a newline is printed through | |
1596 | fputs_filtered(). | |
1597 | ||
1598 | If the line is already overfull, we immediately print a newline and | |
1599 | the indentation, and disable further wrapping. | |
1600 | ||
1601 | If we don't know the width of lines, but we know the page height, | |
1602 | we must not wrap words, but should still keep track of newlines | |
1603 | that were explicitly printed. | |
1604 | ||
1605 | INDENT should not contain tabs, as that will mess up the char count | |
1606 | on the next line. FIXME. | |
1607 | ||
1608 | This routine is guaranteed to force out any output which has been | |
1609 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1610 | used to force out output from the wrap_buffer. */ | |
1611 | ||
1612 | void | |
d2c0eef4 | 1613 | wrap_here (const char *indent) |
c906108c | 1614 | { |
581e13c1 | 1615 | /* This should have been allocated, but be paranoid anyway. */ |
c906108c | 1616 | if (!wrap_buffer) |
3e43a32a MS |
1617 | internal_error (__FILE__, __LINE__, |
1618 | _("failed internal consistency check")); | |
c906108c SS |
1619 | |
1620 | if (wrap_buffer[0]) | |
1621 | { | |
1622 | *wrap_pointer = '\0'; | |
1623 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1624 | } | |
1625 | wrap_pointer = wrap_buffer; | |
1626 | wrap_buffer[0] = '\0'; | |
3e43a32a | 1627 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1628 | { |
1629 | wrap_column = 0; | |
1630 | } | |
1631 | else if (chars_printed >= chars_per_line) | |
1632 | { | |
1633 | puts_filtered ("\n"); | |
1634 | if (indent != NULL) | |
1635 | puts_filtered (indent); | |
1636 | wrap_column = 0; | |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | wrap_column = chars_printed; | |
1641 | if (indent == NULL) | |
1642 | wrap_indent = ""; | |
1643 | else | |
1644 | wrap_indent = indent; | |
1645 | } | |
1646 | } | |
1647 | ||
4a351cef | 1648 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1649 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1650 | right or left justified in the column. Never prints |
1651 | trailing spaces. String should never be longer than | |
1652 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1653 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1654 | |
1655 | void | |
1656 | puts_filtered_tabular (char *string, int width, int right) | |
1657 | { | |
1658 | int spaces = 0; | |
1659 | int stringlen; | |
1660 | char *spacebuf; | |
1661 | ||
1662 | gdb_assert (chars_per_line > 0); | |
1663 | if (chars_per_line == UINT_MAX) | |
1664 | { | |
1665 | fputs_filtered (string, gdb_stdout); | |
1666 | fputs_filtered ("\n", gdb_stdout); | |
1667 | return; | |
1668 | } | |
1669 | ||
1670 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1671 | fputs_filtered ("\n", gdb_stdout); | |
1672 | ||
1673 | if (width >= chars_per_line) | |
1674 | width = chars_per_line - 1; | |
1675 | ||
1676 | stringlen = strlen (string); | |
1677 | ||
1678 | if (chars_printed > 0) | |
1679 | spaces = width - (chars_printed - 1) % width - 1; | |
1680 | if (right) | |
1681 | spaces += width - stringlen; | |
1682 | ||
224c3ddb | 1683 | spacebuf = (char *) alloca (spaces + 1); |
4a351cef AF |
1684 | spacebuf[spaces] = '\0'; |
1685 | while (spaces--) | |
1686 | spacebuf[spaces] = ' '; | |
1687 | ||
1688 | fputs_filtered (spacebuf, gdb_stdout); | |
1689 | fputs_filtered (string, gdb_stdout); | |
1690 | } | |
1691 | ||
1692 | ||
c906108c | 1693 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 1694 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 1695 | any pending output for the current line, flush it and start a new |
581e13c1 | 1696 | line. Otherwise do nothing. */ |
c906108c SS |
1697 | |
1698 | void | |
fba45db2 | 1699 | begin_line (void) |
c906108c SS |
1700 | { |
1701 | if (chars_printed > 0) | |
1702 | { | |
1703 | puts_filtered ("\n"); | |
1704 | } | |
1705 | } | |
1706 | ||
ac9a91a7 | 1707 | |
c906108c SS |
1708 | /* Like fputs but if FILTER is true, pause after every screenful. |
1709 | ||
1710 | Regardless of FILTER can wrap at points other than the final | |
1711 | character of a line. | |
1712 | ||
1713 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1714 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1715 | anything. | |
1716 | ||
1717 | Note that a longjmp to top level may occur in this routine (only if | |
1718 | FILTER is true) (since prompt_for_continue may do so) so this | |
1719 | routine should not be called when cleanups are not in place. */ | |
1720 | ||
1721 | static void | |
fba45db2 KB |
1722 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1723 | int filter) | |
c906108c SS |
1724 | { |
1725 | const char *lineptr; | |
1726 | ||
1727 | if (linebuffer == 0) | |
1728 | return; | |
1729 | ||
1730 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 1731 | if (stream != gdb_stdout |
b2e7f004 JK |
1732 | || !pagination_enabled |
1733 | || batch_flag | |
390a8aca | 1734 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 1735 | || top_level_interpreter () == NULL |
112e8700 | 1736 | || interp_ui_out (top_level_interpreter ())->is_mi_like_p ()) |
c906108c SS |
1737 | { |
1738 | fputs_unfiltered (linebuffer, stream); | |
1739 | return; | |
1740 | } | |
1741 | ||
1742 | /* Go through and output each character. Show line extension | |
1743 | when this is necessary; prompt user for new page when this is | |
1744 | necessary. */ | |
c5aa993b | 1745 | |
c906108c SS |
1746 | lineptr = linebuffer; |
1747 | while (*lineptr) | |
1748 | { | |
1749 | /* Possible new page. */ | |
8731e58e | 1750 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
1751 | prompt_for_continue (); |
1752 | ||
1753 | while (*lineptr && *lineptr != '\n') | |
1754 | { | |
1755 | /* Print a single line. */ | |
1756 | if (*lineptr == '\t') | |
1757 | { | |
1758 | if (wrap_column) | |
1759 | *wrap_pointer++ = '\t'; | |
1760 | else | |
1761 | fputc_unfiltered ('\t', stream); | |
1762 | /* Shifting right by 3 produces the number of tab stops | |
1763 | we have already passed, and then adding one and | |
c5aa993b | 1764 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1765 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1766 | lineptr++; | |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | if (wrap_column) | |
1771 | *wrap_pointer++ = *lineptr; | |
1772 | else | |
c5aa993b | 1773 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1774 | chars_printed++; |
1775 | lineptr++; | |
1776 | } | |
c5aa993b | 1777 | |
c906108c SS |
1778 | if (chars_printed >= chars_per_line) |
1779 | { | |
1780 | unsigned int save_chars = chars_printed; | |
1781 | ||
1782 | chars_printed = 0; | |
1783 | lines_printed++; | |
1784 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1785 | if chars_per_line is right, we probably just overflowed |
1786 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1787 | if (wrap_column) |
1788 | fputc_unfiltered ('\n', stream); | |
1789 | ||
1790 | /* Possible new page. */ | |
1791 | if (lines_printed >= lines_per_page - 1) | |
1792 | prompt_for_continue (); | |
1793 | ||
581e13c1 | 1794 | /* Now output indentation and wrapped string. */ |
c906108c SS |
1795 | if (wrap_column) |
1796 | { | |
1797 | fputs_unfiltered (wrap_indent, stream); | |
581e13c1 MS |
1798 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
1799 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ | |
c906108c SS |
1800 | /* FIXME, this strlen is what prevents wrap_indent from |
1801 | containing tabs. However, if we recurse to print it | |
1802 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 1803 | longer than (the user settable) chars_per_line. |
c906108c SS |
1804 | Note also that this can set chars_printed > chars_per_line |
1805 | if we are printing a long string. */ | |
1806 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1807 | + (save_chars - wrap_column); |
c906108c SS |
1808 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1809 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1810 | wrap_column = 0; /* And disable fancy wrap */ |
1811 | } | |
c906108c SS |
1812 | } |
1813 | } | |
1814 | ||
1815 | if (*lineptr == '\n') | |
1816 | { | |
1817 | chars_printed = 0; | |
3e43a32a MS |
1818 | wrap_here ((char *) 0); /* Spit out chars, cancel |
1819 | further wraps. */ | |
c906108c SS |
1820 | lines_printed++; |
1821 | fputc_unfiltered ('\n', stream); | |
1822 | lineptr++; | |
1823 | } | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | void | |
fba45db2 | 1828 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1829 | { |
1830 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1831 | } | |
1832 | ||
1833 | int | |
fba45db2 | 1834 | putchar_unfiltered (int c) |
c906108c | 1835 | { |
11cf8741 | 1836 | char buf = c; |
e0627e85 | 1837 | |
d9fcf2fb | 1838 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1839 | return c; |
1840 | } | |
1841 | ||
d1f4cff8 AC |
1842 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1843 | May return nonlocally. */ | |
1844 | ||
1845 | int | |
1846 | putchar_filtered (int c) | |
1847 | { | |
1848 | return fputc_filtered (c, gdb_stdout); | |
1849 | } | |
1850 | ||
c906108c | 1851 | int |
fba45db2 | 1852 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 1853 | { |
11cf8741 | 1854 | char buf = c; |
e0627e85 | 1855 | |
d9fcf2fb | 1856 | ui_file_write (stream, &buf, 1); |
c906108c SS |
1857 | return c; |
1858 | } | |
1859 | ||
1860 | int | |
fba45db2 | 1861 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
1862 | { |
1863 | char buf[2]; | |
1864 | ||
1865 | buf[0] = c; | |
1866 | buf[1] = 0; | |
1867 | fputs_filtered (buf, stream); | |
1868 | return c; | |
1869 | } | |
1870 | ||
1871 | /* puts_debug is like fputs_unfiltered, except it prints special | |
1872 | characters in printable fashion. */ | |
1873 | ||
1874 | void | |
fba45db2 | 1875 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
1876 | { |
1877 | int ch; | |
1878 | ||
1879 | /* Print prefix and suffix after each line. */ | |
1880 | static int new_line = 1; | |
1881 | static int return_p = 0; | |
a121b7c1 PA |
1882 | static const char *prev_prefix = ""; |
1883 | static const char *prev_suffix = ""; | |
c906108c SS |
1884 | |
1885 | if (*string == '\n') | |
1886 | return_p = 0; | |
1887 | ||
1888 | /* If the prefix is changing, print the previous suffix, a new line, | |
1889 | and the new prefix. */ | |
c5aa993b | 1890 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 1891 | { |
9846de1b JM |
1892 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
1893 | fputs_unfiltered ("\n", gdb_stdlog); | |
1894 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
1895 | } |
1896 | ||
1897 | /* Print prefix if we printed a newline during the previous call. */ | |
1898 | if (new_line) | |
1899 | { | |
1900 | new_line = 0; | |
9846de1b | 1901 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
1902 | } |
1903 | ||
1904 | prev_prefix = prefix; | |
1905 | prev_suffix = suffix; | |
1906 | ||
1907 | /* Output characters in a printable format. */ | |
1908 | while ((ch = *string++) != '\0') | |
1909 | { | |
1910 | switch (ch) | |
c5aa993b | 1911 | { |
c906108c SS |
1912 | default: |
1913 | if (isprint (ch)) | |
9846de1b | 1914 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
1915 | |
1916 | else | |
9846de1b | 1917 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
1918 | break; |
1919 | ||
c5aa993b JM |
1920 | case '\\': |
1921 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
1922 | break; | |
1923 | case '\b': | |
1924 | fputs_unfiltered ("\\b", gdb_stdlog); | |
1925 | break; | |
1926 | case '\f': | |
1927 | fputs_unfiltered ("\\f", gdb_stdlog); | |
1928 | break; | |
1929 | case '\n': | |
1930 | new_line = 1; | |
1931 | fputs_unfiltered ("\\n", gdb_stdlog); | |
1932 | break; | |
1933 | case '\r': | |
1934 | fputs_unfiltered ("\\r", gdb_stdlog); | |
1935 | break; | |
1936 | case '\t': | |
1937 | fputs_unfiltered ("\\t", gdb_stdlog); | |
1938 | break; | |
1939 | case '\v': | |
1940 | fputs_unfiltered ("\\v", gdb_stdlog); | |
1941 | break; | |
1942 | } | |
c906108c SS |
1943 | |
1944 | return_p = ch == '\r'; | |
1945 | } | |
1946 | ||
1947 | /* Print suffix if we printed a newline. */ | |
1948 | if (new_line) | |
1949 | { | |
9846de1b JM |
1950 | fputs_unfiltered (suffix, gdb_stdlog); |
1951 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
1952 | } |
1953 | } | |
1954 | ||
1955 | ||
1956 | /* Print a variable number of ARGS using format FORMAT. If this | |
1957 | information is going to put the amount written (since the last call | |
1958 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
1959 | call prompt_for_continue to get the users permision to continue. | |
1960 | ||
1961 | Unlike fprintf, this function does not return a value. | |
1962 | ||
1963 | We implement three variants, vfprintf (takes a vararg list and stream), | |
1964 | fprintf (takes a stream to write on), and printf (the usual). | |
1965 | ||
1966 | Note also that a longjmp to top level may occur in this routine | |
1967 | (since prompt_for_continue may do so) so this routine should not be | |
1968 | called when cleanups are not in place. */ | |
1969 | ||
1970 | static void | |
fba45db2 KB |
1971 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
1972 | va_list args, int filter) | |
c906108c | 1973 | { |
200aa7b1 TT |
1974 | std::string linebuffer = string_vprintf (format, args); |
1975 | fputs_maybe_filtered (linebuffer.c_str (), stream, filter); | |
c906108c SS |
1976 | } |
1977 | ||
1978 | ||
1979 | void | |
fba45db2 | 1980 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
1981 | { |
1982 | vfprintf_maybe_filtered (stream, format, args, 1); | |
1983 | } | |
1984 | ||
1985 | void | |
fba45db2 | 1986 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c | 1987 | { |
200aa7b1 | 1988 | std::string linebuffer = string_vprintf (format, args); |
75feb17d DJ |
1989 | if (debug_timestamp && stream == gdb_stdlog) |
1990 | { | |
dcb07cfa | 1991 | using namespace std::chrono; |
6e5abd65 | 1992 | int len, need_nl; |
75feb17d | 1993 | |
dcb07cfa PA |
1994 | steady_clock::time_point now = steady_clock::now (); |
1995 | seconds s = duration_cast<seconds> (now.time_since_epoch ()); | |
1996 | microseconds us = duration_cast<microseconds> (now.time_since_epoch () - s); | |
6e5abd65 | 1997 | |
200aa7b1 | 1998 | len = linebuffer.size (); |
6e5abd65 PA |
1999 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); |
2000 | ||
dcb07cfa PA |
2001 | std::string timestamp = string_printf ("%ld.%06ld %s%s", |
2002 | (long) s.count (), | |
2003 | (long) us.count (), | |
200aa7b1 TT |
2004 | linebuffer.c_str (), |
2005 | need_nl ? "\n": ""); | |
dcb07cfa | 2006 | fputs_unfiltered (timestamp.c_str (), stream); |
75feb17d | 2007 | } |
6e5abd65 | 2008 | else |
200aa7b1 | 2009 | fputs_unfiltered (linebuffer.c_str (), stream); |
c906108c SS |
2010 | } |
2011 | ||
2012 | void | |
fba45db2 | 2013 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2014 | { |
2015 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2016 | } | |
2017 | ||
2018 | void | |
fba45db2 | 2019 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2020 | { |
2021 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2022 | } | |
2023 | ||
c906108c | 2024 | void |
8731e58e | 2025 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2026 | { |
2027 | va_list args; | |
e0627e85 | 2028 | |
c906108c | 2029 | va_start (args, format); |
c906108c SS |
2030 | vfprintf_filtered (stream, format, args); |
2031 | va_end (args); | |
2032 | } | |
2033 | ||
c906108c | 2034 | void |
8731e58e | 2035 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2036 | { |
2037 | va_list args; | |
e0627e85 | 2038 | |
c906108c | 2039 | va_start (args, format); |
c906108c SS |
2040 | vfprintf_unfiltered (stream, format, args); |
2041 | va_end (args); | |
2042 | } | |
2043 | ||
2044 | /* Like fprintf_filtered, but prints its result indented. | |
2045 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2046 | ||
c906108c | 2047 | void |
8731e58e AC |
2048 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2049 | ...) | |
c906108c SS |
2050 | { |
2051 | va_list args; | |
e0627e85 | 2052 | |
c906108c | 2053 | va_start (args, format); |
c906108c SS |
2054 | print_spaces_filtered (spaces, stream); |
2055 | ||
2056 | vfprintf_filtered (stream, format, args); | |
2057 | va_end (args); | |
2058 | } | |
2059 | ||
2060 | ||
c906108c | 2061 | void |
8731e58e | 2062 | printf_filtered (const char *format, ...) |
c906108c SS |
2063 | { |
2064 | va_list args; | |
e0627e85 | 2065 | |
c906108c | 2066 | va_start (args, format); |
c906108c SS |
2067 | vfprintf_filtered (gdb_stdout, format, args); |
2068 | va_end (args); | |
2069 | } | |
2070 | ||
2071 | ||
c906108c | 2072 | void |
8731e58e | 2073 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2074 | { |
2075 | va_list args; | |
e0627e85 | 2076 | |
c906108c | 2077 | va_start (args, format); |
c906108c SS |
2078 | vfprintf_unfiltered (gdb_stdout, format, args); |
2079 | va_end (args); | |
2080 | } | |
2081 | ||
2082 | /* Like printf_filtered, but prints it's result indented. | |
2083 | Called as printfi_filtered (spaces, format, ...); */ | |
2084 | ||
c906108c | 2085 | void |
8731e58e | 2086 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2087 | { |
2088 | va_list args; | |
e0627e85 | 2089 | |
c906108c | 2090 | va_start (args, format); |
c906108c SS |
2091 | print_spaces_filtered (spaces, gdb_stdout); |
2092 | vfprintf_filtered (gdb_stdout, format, args); | |
2093 | va_end (args); | |
2094 | } | |
2095 | ||
2096 | /* Easy -- but watch out! | |
2097 | ||
2098 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2099 | This one doesn't, and had better not! */ | |
2100 | ||
2101 | void | |
fba45db2 | 2102 | puts_filtered (const char *string) |
c906108c SS |
2103 | { |
2104 | fputs_filtered (string, gdb_stdout); | |
2105 | } | |
2106 | ||
2107 | void | |
fba45db2 | 2108 | puts_unfiltered (const char *string) |
c906108c SS |
2109 | { |
2110 | fputs_unfiltered (string, gdb_stdout); | |
2111 | } | |
2112 | ||
2113 | /* Return a pointer to N spaces and a null. The pointer is good | |
2114 | until the next call to here. */ | |
2115 | char * | |
fba45db2 | 2116 | n_spaces (int n) |
c906108c | 2117 | { |
392a587b JM |
2118 | char *t; |
2119 | static char *spaces = 0; | |
2120 | static int max_spaces = -1; | |
c906108c SS |
2121 | |
2122 | if (n > max_spaces) | |
2123 | { | |
2124 | if (spaces) | |
b8c9b27d | 2125 | xfree (spaces); |
c5aa993b JM |
2126 | spaces = (char *) xmalloc (n + 1); |
2127 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2128 | *--t = ' '; |
2129 | spaces[n] = '\0'; | |
2130 | max_spaces = n; | |
2131 | } | |
2132 | ||
2133 | return spaces + max_spaces - n; | |
2134 | } | |
2135 | ||
2136 | /* Print N spaces. */ | |
2137 | void | |
fba45db2 | 2138 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2139 | { |
2140 | fputs_filtered (n_spaces (n), stream); | |
2141 | } | |
2142 | \f | |
4a351cef | 2143 | /* C++/ObjC demangler stuff. */ |
c906108c | 2144 | |
389e51db AC |
2145 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2146 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2147 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2148 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2149 | |
2150 | void | |
0d5cff50 | 2151 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2152 | enum language lang, int arg_mode) |
c906108c SS |
2153 | { |
2154 | char *demangled; | |
2155 | ||
2156 | if (name != NULL) | |
2157 | { | |
2158 | /* If user wants to see raw output, no problem. */ | |
2159 | if (!demangle) | |
2160 | { | |
2161 | fputs_filtered (name, stream); | |
2162 | } | |
2163 | else | |
2164 | { | |
9a3d7dfd | 2165 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2166 | fputs_filtered (demangled ? demangled : name, stream); |
2167 | if (demangled != NULL) | |
2168 | { | |
b8c9b27d | 2169 | xfree (demangled); |
c906108c SS |
2170 | } |
2171 | } | |
2172 | } | |
2173 | } | |
2174 | ||
1d550c82 | 2175 | /* Modes of operation for strncmp_iw_with_mode. */ |
c5aa993b | 2176 | |
1d550c82 PA |
2177 | enum class strncmp_iw_mode |
2178 | { | |
2179 | /* Work like strncmp, while ignoring whitespace. */ | |
2180 | NORMAL, | |
c906108c | 2181 | |
1d550c82 PA |
2182 | /* Like NORMAL, but also apply the strcmp_iw hack. I.e., |
2183 | string1=="FOO(PARAMS)" matches string2=="FOO". */ | |
2184 | MATCH_PARAMS, | |
2185 | }; | |
2186 | ||
2187 | /* Helper for strncmp_iw and strcmp_iw. */ | |
2188 | ||
2189 | static int | |
2190 | strncmp_iw_with_mode (const char *string1, const char *string2, | |
2191 | size_t string2_len, strncmp_iw_mode mode) | |
c906108c | 2192 | { |
1d550c82 PA |
2193 | const char *end_str2 = string2 + string2_len; |
2194 | ||
2195 | while (1) | |
c906108c SS |
2196 | { |
2197 | while (isspace (*string1)) | |
1d550c82 PA |
2198 | string1++; |
2199 | while (string2 < end_str2 && isspace (*string2)) | |
2200 | string2++; | |
2201 | if (*string1 == '\0' || string2 == end_str2) | |
2202 | break; | |
559a7a62 JK |
2203 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2204 | break; | |
2205 | if (case_sensitivity == case_sensitive_off | |
2206 | && (tolower ((unsigned char) *string1) | |
2207 | != tolower ((unsigned char) *string2))) | |
2208 | break; | |
1d550c82 PA |
2209 | |
2210 | string1++; | |
2211 | string2++; | |
c906108c | 2212 | } |
1d550c82 PA |
2213 | |
2214 | if (string2 == end_str2) | |
2215 | { | |
2216 | if (mode == strncmp_iw_mode::NORMAL) | |
2217 | return 0; | |
2218 | else | |
2219 | return (*string1 != '\0' && *string1 != '('); | |
2220 | } | |
2221 | else | |
2222 | return 1; | |
2223 | } | |
2224 | ||
2225 | /* See utils.h. */ | |
2226 | ||
2227 | int | |
2228 | strncmp_iw (const char *string1, const char *string2, size_t string2_len) | |
2229 | { | |
2230 | return strncmp_iw_with_mode (string1, string2, string2_len, | |
2231 | strncmp_iw_mode::NORMAL); | |
2232 | } | |
2233 | ||
2234 | /* See utils.h. */ | |
2235 | ||
2236 | int | |
2237 | strcmp_iw (const char *string1, const char *string2) | |
2238 | { | |
2239 | return strncmp_iw_with_mode (string1, string2, strlen (string2), | |
2240 | strncmp_iw_mode::MATCH_PARAMS); | |
c906108c | 2241 | } |
2de7ced7 | 2242 | |
0fe19209 DC |
2243 | /* This is like strcmp except that it ignores whitespace and treats |
2244 | '(' as the first non-NULL character in terms of ordering. Like | |
2245 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2246 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2247 | according to that ordering. | |
2248 | ||
2249 | If a list is sorted according to this function and if you want to | |
2250 | find names in the list that match some fixed NAME according to | |
2251 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2252 | where this function would put NAME. | |
2253 | ||
559a7a62 JK |
2254 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2255 | may choose it during later lookup. Therefore this function always sorts | |
2256 | primarily case-insensitively and secondarily case-sensitively. | |
2257 | ||
0fe19209 DC |
2258 | Here are some examples of why using strcmp to sort is a bad idea: |
2259 | ||
2260 | Whitespace example: | |
2261 | ||
2262 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2263 | we try to do a search for "foo<char*>", strcmp will locate this | |
2264 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2265 | will start looking at strings beginning with "goo", and will never | |
2266 | see the correct match of "foo<char *>". | |
2267 | ||
2268 | Parenthesis example: | |
2269 | ||
2270 | In practice, this is less like to be an issue, but I'll give it a | |
2271 | shot. Let's assume that '$' is a legitimate character to occur in | |
2272 | symbols. (Which may well even be the case on some systems.) Then | |
2273 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2274 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2275 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2276 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2277 | "foo") is false, so it won't proceed to the actual match of | |
2278 | "foo(int)" with "foo". */ | |
2279 | ||
2280 | int | |
2281 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2282 | { | |
559a7a62 JK |
2283 | const char *saved_string1 = string1, *saved_string2 = string2; |
2284 | enum case_sensitivity case_pass = case_sensitive_off; | |
2285 | ||
2286 | for (;;) | |
0fe19209 | 2287 | { |
b11b1f88 JK |
2288 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2289 | Provide stub characters if we are already at the end of one of the | |
2290 | strings. */ | |
2291 | char c1 = 'X', c2 = 'X'; | |
2292 | ||
2293 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2294 | { |
b11b1f88 JK |
2295 | while (isspace (*string1)) |
2296 | string1++; | |
2297 | while (isspace (*string2)) | |
2298 | string2++; | |
2299 | ||
559a7a62 JK |
2300 | switch (case_pass) |
2301 | { | |
2302 | case case_sensitive_off: | |
2303 | c1 = tolower ((unsigned char) *string1); | |
2304 | c2 = tolower ((unsigned char) *string2); | |
2305 | break; | |
2306 | case case_sensitive_on: | |
b11b1f88 JK |
2307 | c1 = *string1; |
2308 | c2 = *string2; | |
559a7a62 JK |
2309 | break; |
2310 | } | |
b11b1f88 JK |
2311 | if (c1 != c2) |
2312 | break; | |
2313 | ||
2314 | if (*string1 != '\0') | |
2315 | { | |
2316 | string1++; | |
2317 | string2++; | |
2318 | } | |
0fe19209 | 2319 | } |
b11b1f88 JK |
2320 | |
2321 | switch (*string1) | |
0fe19209 | 2322 | { |
b11b1f88 JK |
2323 | /* Characters are non-equal unless they're both '\0'; we want to |
2324 | make sure we get the comparison right according to our | |
2325 | comparison in the cases where one of them is '\0' or '('. */ | |
2326 | case '\0': | |
2327 | if (*string2 == '\0') | |
559a7a62 | 2328 | break; |
b11b1f88 JK |
2329 | else |
2330 | return -1; | |
2331 | case '(': | |
2332 | if (*string2 == '\0') | |
2333 | return 1; | |
2334 | else | |
2335 | return -1; | |
2336 | default: | |
2337 | if (*string2 == '\0' || *string2 == '(') | |
2338 | return 1; | |
559a7a62 JK |
2339 | else if (c1 > c2) |
2340 | return 1; | |
2341 | else if (c1 < c2) | |
2342 | return -1; | |
2343 | /* PASSTHRU */ | |
0fe19209 | 2344 | } |
559a7a62 JK |
2345 | |
2346 | if (case_pass == case_sensitive_on) | |
2347 | return 0; | |
2348 | ||
2349 | /* Otherwise the strings were equal in case insensitive way, make | |
2350 | a more fine grained comparison in a case sensitive way. */ | |
2351 | ||
2352 | case_pass = case_sensitive_on; | |
2353 | string1 = saved_string1; | |
2354 | string2 = saved_string2; | |
0fe19209 | 2355 | } |
0fe19209 DC |
2356 | } |
2357 | ||
2de7ced7 DJ |
2358 | /* A simple comparison function with opposite semantics to strcmp. */ |
2359 | ||
2360 | int | |
2361 | streq (const char *lhs, const char *rhs) | |
2362 | { | |
2363 | return !strcmp (lhs, rhs); | |
2364 | } | |
c906108c | 2365 | \f |
c5aa993b | 2366 | |
c906108c | 2367 | /* |
c5aa993b JM |
2368 | ** subset_compare() |
2369 | ** Answer whether string_to_compare is a full or partial match to | |
2370 | ** template_string. The partial match must be in sequence starting | |
2371 | ** at index 0. | |
2372 | */ | |
c906108c | 2373 | int |
a121b7c1 | 2374 | subset_compare (const char *string_to_compare, const char *template_string) |
7a292a7a SS |
2375 | { |
2376 | int match; | |
e0627e85 | 2377 | |
8731e58e AC |
2378 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2379 | && strlen (string_to_compare) <= strlen (template_string)) | |
2380 | match = | |
61012eef | 2381 | (startswith (template_string, string_to_compare)); |
7a292a7a SS |
2382 | else |
2383 | match = 0; | |
2384 | return match; | |
2385 | } | |
c906108c | 2386 | |
75feb17d DJ |
2387 | static void |
2388 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2389 | struct cmd_list_element *c, const char *value) | |
2390 | { | |
3e43a32a MS |
2391 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2392 | value); | |
75feb17d | 2393 | } |
c906108c | 2394 | \f |
c5aa993b | 2395 | |
c906108c | 2396 | void |
fba45db2 | 2397 | initialize_utils (void) |
c906108c | 2398 | { |
35096d9d | 2399 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2400 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2401 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2402 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2403 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2404 | set_width_command, |
920d2a44 | 2405 | show_chars_per_line, |
35096d9d AC |
2406 | &setlist, &showlist); |
2407 | ||
2408 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2409 | Set number of lines in a page for GDB output pagination."), _("\ |
2410 | Show number of lines in a page for GDB output pagination."), _("\ | |
2411 | This affects the number of lines after which GDB will pause\n\ | |
2412 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2413 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2414 | set_height_command, |
920d2a44 | 2415 | show_lines_per_page, |
35096d9d | 2416 | &setlist, &showlist); |
c5aa993b | 2417 | |
5bf193a2 AC |
2418 | add_setshow_boolean_cmd ("pagination", class_support, |
2419 | &pagination_enabled, _("\ | |
77dec115 EZ |
2420 | Set state of GDB output pagination."), _("\ |
2421 | Show state of GDB output pagination."), _("\ | |
2422 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2423 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2424 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2425 | NULL, |
920d2a44 | 2426 | show_pagination_enabled, |
5bf193a2 | 2427 | &setlist, &showlist); |
4261bedc | 2428 | |
5bf193a2 AC |
2429 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2430 | &sevenbit_strings, _("\ | |
2431 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2432 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2433 | NULL, | |
920d2a44 | 2434 | show_sevenbit_strings, |
5bf193a2 AC |
2435 | &setprintlist, &showprintlist); |
2436 | ||
75feb17d DJ |
2437 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2438 | &debug_timestamp, _("\ | |
2439 | Set timestamping of debugging messages."), _("\ | |
2440 | Show timestamping of debugging messages."), _("\ | |
2441 | When set, debugging messages will be marked with seconds and microseconds."), | |
2442 | NULL, | |
2443 | show_debug_timestamp, | |
2444 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2445 | } |
2446 | ||
66bf4b3a | 2447 | const char * |
5af949e3 | 2448 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2449 | { |
2450 | /* Truncate address to the size of a target address, avoiding shifts | |
2451 | larger or equal than the width of a CORE_ADDR. The local | |
2452 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2453 | when it won't occur. */ |
66bf4b3a AC |
2454 | /* NOTE: This assumes that the significant address information is |
2455 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2456 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2457 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2458 | ||
5af949e3 | 2459 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2460 | |
2461 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2462 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2463 | return hex_string (addr); | |
2464 | } | |
2465 | ||
f1310107 TJB |
2466 | /* This function is described in "defs.h". */ |
2467 | ||
2468 | const char * | |
2469 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2470 | { | |
2471 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2472 | ||
2473 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2474 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2475 | ||
2476 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2477 | that returns the language localized string formatted to a width | |
2478 | based on gdbarch_addr_bit. */ | |
2479 | if (addr_bit <= 32) | |
2480 | return hex_string_custom (address, 8); | |
2481 | else | |
2482 | return hex_string_custom (address, 16); | |
2483 | } | |
2484 | ||
8e3b41a9 JK |
2485 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2486 | ||
2487 | hashval_t | |
2488 | core_addr_hash (const void *ap) | |
2489 | { | |
19ba03f4 | 2490 | const CORE_ADDR *addrp = (const CORE_ADDR *) ap; |
8e3b41a9 JK |
2491 | |
2492 | return *addrp; | |
2493 | } | |
2494 | ||
2495 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2496 | ||
2497 | int | |
2498 | core_addr_eq (const void *ap, const void *bp) | |
2499 | { | |
19ba03f4 SM |
2500 | const CORE_ADDR *addr_ap = (const CORE_ADDR *) ap; |
2501 | const CORE_ADDR *addr_bp = (const CORE_ADDR *) bp; | |
8e3b41a9 JK |
2502 | |
2503 | return *addr_ap == *addr_bp; | |
2504 | } | |
2505 | ||
03dd37c3 AC |
2506 | /* Convert a string back into a CORE_ADDR. */ |
2507 | CORE_ADDR | |
2508 | string_to_core_addr (const char *my_string) | |
2509 | { | |
2510 | CORE_ADDR addr = 0; | |
9544c605 | 2511 | |
03dd37c3 AC |
2512 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2513 | { | |
ced572fe | 2514 | /* Assume that it is in hex. */ |
03dd37c3 | 2515 | int i; |
5d502164 | 2516 | |
03dd37c3 AC |
2517 | for (i = 2; my_string[i] != '\0'; i++) |
2518 | { | |
2519 | if (isdigit (my_string[i])) | |
2520 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2521 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2522 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2523 | else | |
63f06803 | 2524 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2525 | } |
2526 | } | |
2527 | else | |
2528 | { | |
2529 | /* Assume that it is in decimal. */ | |
2530 | int i; | |
5d502164 | 2531 | |
03dd37c3 AC |
2532 | for (i = 0; my_string[i] != '\0'; i++) |
2533 | { | |
2534 | if (isdigit (my_string[i])) | |
2535 | addr = (my_string[i] - '0') + (addr * 10); | |
2536 | else | |
63f06803 | 2537 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2538 | } |
2539 | } | |
9544c605 | 2540 | |
03dd37c3 AC |
2541 | return addr; |
2542 | } | |
58d370e0 | 2543 | |
14278e1f | 2544 | gdb::unique_xmalloc_ptr<char> |
58d370e0 TT |
2545 | gdb_realpath (const char *filename) |
2546 | { | |
0fa9473f JB |
2547 | /* On most hosts, we rely on canonicalize_file_name to compute |
2548 | the FILENAME's realpath. | |
2549 | ||
2550 | But the situation is slightly more complex on Windows, due to some | |
2551 | versions of GCC which were reported to generate paths where | |
2552 | backlashes (the directory separator) were doubled. For instance: | |
2553 | c:\\some\\double\\slashes\\dir | |
2554 | ... instead of ... | |
2555 | c:\some\double\slashes\dir | |
2556 | Those double-slashes were getting in the way when comparing paths, | |
2557 | for instance when trying to insert a breakpoint as follow: | |
2558 | (gdb) b c:/some/double/slashes/dir/foo.c:4 | |
2559 | No source file named c:/some/double/slashes/dir/foo.c:4. | |
2560 | (gdb) b c:\some\double\slashes\dir\foo.c:4 | |
2561 | No source file named c:\some\double\slashes\dir\foo.c:4. | |
2562 | To prevent this from happening, we need this function to always | |
2563 | strip those extra backslashes. While canonicalize_file_name does | |
2564 | perform this simplification, it only works when the path is valid. | |
2565 | Since the simplification would be useful even if the path is not | |
2566 | valid (one can always set a breakpoint on a file, even if the file | |
2567 | does not exist locally), we rely instead on GetFullPathName to | |
2568 | perform the canonicalization. */ | |
2569 | ||
9c5e4386 JB |
2570 | #if defined (_WIN32) |
2571 | { | |
2572 | char buf[MAX_PATH]; | |
2573 | DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL); | |
2574 | ||
0fa9473f JB |
2575 | /* The file system is case-insensitive but case-preserving. |
2576 | So it is important we do not lowercase the path. Otherwise, | |
2577 | we might not be able to display the original casing in a given | |
2578 | path. */ | |
9c5e4386 | 2579 | if (len > 0 && len < MAX_PATH) |
14278e1f | 2580 | return gdb::unique_xmalloc_ptr<char> (xstrdup (buf)); |
9c5e4386 | 2581 | } |
abbffc89 YQ |
2582 | #else |
2583 | { | |
2584 | char *rp = canonicalize_file_name (filename); | |
2585 | ||
2586 | if (rp != NULL) | |
14278e1f | 2587 | return gdb::unique_xmalloc_ptr<char> (rp); |
abbffc89 | 2588 | } |
9c5e4386 JB |
2589 | #endif |
2590 | ||
70d35819 | 2591 | /* This system is a lost cause, just dup the buffer. */ |
14278e1f | 2592 | return gdb::unique_xmalloc_ptr<char> (xstrdup (filename)); |
58d370e0 | 2593 | } |
303c8ebd | 2594 | |
14278e1f TT |
2595 | #if GDB_SELF_TEST |
2596 | ||
2597 | static void | |
2598 | gdb_realpath_check_trailer (const char *input, const char *trailer) | |
2599 | { | |
2600 | gdb::unique_xmalloc_ptr<char> result = gdb_realpath (input); | |
2601 | ||
2602 | size_t len = strlen (result.get ()); | |
2603 | size_t trail_len = strlen (trailer); | |
2604 | ||
2605 | SELF_CHECK (len >= trail_len | |
2606 | && strcmp (result.get () + len - trail_len, trailer) == 0); | |
2607 | } | |
2608 | ||
2609 | static void | |
2610 | gdb_realpath_tests () | |
2611 | { | |
2612 | /* A file which contains a directory prefix. */ | |
2613 | gdb_realpath_check_trailer ("./xfullpath.exp", "/xfullpath.exp"); | |
2614 | /* A file which contains a directory prefix. */ | |
2615 | gdb_realpath_check_trailer ("../../defs.h", "/defs.h"); | |
2616 | /* A one-character filename. */ | |
2617 | gdb_realpath_check_trailer ("./a", "/a"); | |
2618 | /* A file in the root directory. */ | |
2619 | gdb_realpath_check_trailer ("/root_file_which_should_exist", | |
2620 | "/root_file_which_should_exist"); | |
2621 | /* A file which does not have a directory prefix. */ | |
2622 | gdb_realpath_check_trailer ("xfullpath.exp", "xfullpath.exp"); | |
2623 | /* A one-char filename without any directory prefix. */ | |
2624 | gdb_realpath_check_trailer ("a", "a"); | |
2625 | /* An empty filename. */ | |
2626 | gdb_realpath_check_trailer ("", ""); | |
2627 | } | |
2628 | ||
2629 | #endif /* GDB_SELF_TEST */ | |
2630 | ||
4856b6bc JK |
2631 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
2632 | by gdb_realpath. */ | |
2633 | ||
4971c9a7 | 2634 | gdb::unique_xmalloc_ptr<char> |
4856b6bc JK |
2635 | gdb_realpath_keepfile (const char *filename) |
2636 | { | |
2637 | const char *base_name = lbasename (filename); | |
2638 | char *dir_name; | |
4856b6bc JK |
2639 | char *result; |
2640 | ||
2641 | /* Extract the basename of filename, and return immediately | |
2642 | a copy of filename if it does not contain any directory prefix. */ | |
2643 | if (base_name == filename) | |
4971c9a7 | 2644 | return gdb::unique_xmalloc_ptr<char> (xstrdup (filename)); |
4856b6bc | 2645 | |
224c3ddb | 2646 | dir_name = (char *) alloca ((size_t) (base_name - filename + 2)); |
4856b6bc JK |
2647 | /* Allocate enough space to store the dir_name + plus one extra |
2648 | character sometimes needed under Windows (see below), and | |
2649 | then the closing \000 character. */ | |
2650 | strncpy (dir_name, filename, base_name - filename); | |
2651 | dir_name[base_name - filename] = '\000'; | |
2652 | ||
2653 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2654 | /* We need to be careful when filename is of the form 'd:foo', which | |
2655 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2656 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') | |
2657 | { | |
2658 | dir_name[2] = '.'; | |
2659 | dir_name[3] = '\000'; | |
2660 | } | |
2661 | #endif | |
2662 | ||
2663 | /* Canonicalize the directory prefix, and build the resulting | |
2664 | filename. If the dirname realpath already contains an ending | |
2665 | directory separator, avoid doubling it. */ | |
14278e1f TT |
2666 | gdb::unique_xmalloc_ptr<char> path_storage = gdb_realpath (dir_name); |
2667 | const char *real_path = path_storage.get (); | |
4856b6bc JK |
2668 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) |
2669 | result = concat (real_path, base_name, (char *) NULL); | |
2670 | else | |
2671 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); | |
2672 | ||
4971c9a7 | 2673 | return gdb::unique_xmalloc_ptr<char> (result); |
4856b6bc JK |
2674 | } |
2675 | ||
04affae3 JK |
2676 | /* Return PATH in absolute form, performing tilde-expansion if necessary. |
2677 | PATH cannot be NULL or the empty string. | |
e3e41d58 | 2678 | This does not resolve symlinks however, use gdb_realpath for that. */ |
04affae3 | 2679 | |
e3e41d58 | 2680 | gdb::unique_xmalloc_ptr<char> |
04affae3 JK |
2681 | gdb_abspath (const char *path) |
2682 | { | |
2683 | gdb_assert (path != NULL && path[0] != '\0'); | |
2684 | ||
2685 | if (path[0] == '~') | |
e3e41d58 | 2686 | return gdb::unique_xmalloc_ptr<char> (tilde_expand (path)); |
04affae3 JK |
2687 | |
2688 | if (IS_ABSOLUTE_PATH (path)) | |
e3e41d58 | 2689 | return gdb::unique_xmalloc_ptr<char> (xstrdup (path)); |
04affae3 JK |
2690 | |
2691 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
e3e41d58 TT |
2692 | return gdb::unique_xmalloc_ptr<char> |
2693 | (concat (current_directory, | |
2694 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) | |
2695 | ? "" : SLASH_STRING, | |
2696 | path, (char *) NULL)); | |
04affae3 JK |
2697 | } |
2698 | ||
5b03f266 AC |
2699 | ULONGEST |
2700 | align_up (ULONGEST v, int n) | |
2701 | { | |
2702 | /* Check that N is really a power of two. */ | |
2703 | gdb_assert (n && (n & (n-1)) == 0); | |
2704 | return (v + n - 1) & -n; | |
2705 | } | |
2706 | ||
2707 | ULONGEST | |
2708 | align_down (ULONGEST v, int n) | |
2709 | { | |
2710 | /* Check that N is really a power of two. */ | |
2711 | gdb_assert (n && (n & (n-1)) == 0); | |
2712 | return (v & -n); | |
2713 | } | |
ae5a43e0 DJ |
2714 | |
2715 | /* Allocation function for the libiberty hash table which uses an | |
2716 | obstack. The obstack is passed as DATA. */ | |
2717 | ||
2718 | void * | |
2719 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
2720 | { | |
241fd515 | 2721 | size_t total = size * count; |
ae5a43e0 | 2722 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 2723 | |
ae5a43e0 DJ |
2724 | memset (ptr, 0, total); |
2725 | return ptr; | |
2726 | } | |
2727 | ||
2728 | /* Trivial deallocation function for the libiberty splay tree and hash | |
2729 | table - don't deallocate anything. Rely on later deletion of the | |
2730 | obstack. DATA will be the obstack, although it is not needed | |
2731 | here. */ | |
2732 | ||
2733 | void | |
2734 | dummy_obstack_deallocate (void *object, void *data) | |
2735 | { | |
2736 | return; | |
2737 | } | |
253c8abb | 2738 | |
e1024ff1 DJ |
2739 | /* Simple, portable version of dirname that does not modify its |
2740 | argument. */ | |
2741 | ||
d721ba37 | 2742 | std::string |
e1024ff1 DJ |
2743 | ldirname (const char *filename) |
2744 | { | |
d721ba37 | 2745 | std::string dirname; |
e1024ff1 | 2746 | const char *base = lbasename (filename); |
e1024ff1 DJ |
2747 | |
2748 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
2749 | --base; | |
2750 | ||
2751 | if (base == filename) | |
d721ba37 | 2752 | return dirname; |
e1024ff1 | 2753 | |
d721ba37 | 2754 | dirname = std::string (filename, base - filename); |
e1024ff1 DJ |
2755 | |
2756 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
2757 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
2758 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
2759 | && !IS_DIR_SEPARATOR (filename[0])) | |
2760 | dirname[base++ - filename] = '.'; | |
2761 | ||
e1024ff1 DJ |
2762 | return dirname; |
2763 | } | |
d1a41061 | 2764 | |
773a1edc TT |
2765 | /* See utils.h. */ |
2766 | ||
2767 | void | |
2768 | gdb_argv::reset (const char *s) | |
2769 | { | |
2770 | char **argv = buildargv (s); | |
2771 | ||
2772 | if (s != NULL && argv == NULL) | |
2773 | malloc_failure (0); | |
2774 | ||
2775 | freeargv (m_argv); | |
2776 | m_argv = argv; | |
2777 | } | |
2778 | ||
dc146f7c VP |
2779 | int |
2780 | compare_positive_ints (const void *ap, const void *bp) | |
2781 | { | |
2782 | /* Because we know we're comparing two ints which are positive, | |
2783 | there's no danger of overflow here. */ | |
2784 | return * (int *) ap - * (int *) bp; | |
2785 | } | |
2786 | ||
f8eba3c6 TT |
2787 | /* String compare function for qsort. */ |
2788 | ||
2789 | int | |
2790 | compare_strings (const void *arg1, const void *arg2) | |
2791 | { | |
2792 | const char **s1 = (const char **) arg1; | |
2793 | const char **s2 = (const char **) arg2; | |
2794 | ||
2795 | return strcmp (*s1, *s2); | |
2796 | } | |
2797 | ||
d18b8b7a | 2798 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
2799 | #define AMBIGUOUS_MESS2 \ |
2800 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a HZ |
2801 | |
2802 | const char * | |
2803 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) | |
2804 | { | |
2805 | char *ret, *retp; | |
2806 | int ret_len; | |
2807 | char **p; | |
2808 | ||
2809 | /* Check if errmsg just need simple return. */ | |
2810 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
2811 | return bfd_errmsg (error_tag); | |
2812 | ||
2813 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) | |
2814 | + strlen (AMBIGUOUS_MESS2); | |
2815 | for (p = matching; *p; p++) | |
2816 | ret_len += strlen (*p) + 1; | |
224c3ddb | 2817 | ret = (char *) xmalloc (ret_len + 1); |
d18b8b7a HZ |
2818 | retp = ret; |
2819 | make_cleanup (xfree, ret); | |
2820 | ||
2821 | strcpy (retp, bfd_errmsg (error_tag)); | |
2822 | retp += strlen (retp); | |
2823 | ||
2824 | strcpy (retp, AMBIGUOUS_MESS1); | |
2825 | retp += strlen (retp); | |
2826 | ||
2827 | for (p = matching; *p; p++) | |
2828 | { | |
2829 | sprintf (retp, " %s", *p); | |
2830 | retp += strlen (retp); | |
2831 | } | |
2832 | xfree (matching); | |
2833 | ||
2834 | strcpy (retp, AMBIGUOUS_MESS2); | |
2835 | ||
2836 | return ret; | |
2837 | } | |
2838 | ||
74164c56 JK |
2839 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
2840 | ||
2841 | int | |
c0939df1 | 2842 | parse_pid_to_attach (const char *args) |
74164c56 JK |
2843 | { |
2844 | unsigned long pid; | |
2845 | char *dummy; | |
2846 | ||
2847 | if (!args) | |
2848 | error_no_arg (_("process-id to attach")); | |
2849 | ||
c0939df1 | 2850 | dummy = (char *) args; |
74164c56 JK |
2851 | pid = strtoul (args, &dummy, 0); |
2852 | /* Some targets don't set errno on errors, grrr! */ | |
2853 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
2854 | error (_("Illegal process-id: %s."), args); | |
2855 | ||
2856 | return pid; | |
2857 | } | |
2858 | ||
353d1d73 JK |
2859 | /* Helper for make_bpstat_clear_actions_cleanup. */ |
2860 | ||
2861 | static void | |
2862 | do_bpstat_clear_actions_cleanup (void *unused) | |
2863 | { | |
2864 | bpstat_clear_actions (); | |
2865 | } | |
2866 | ||
2867 | /* Call bpstat_clear_actions for the case an exception is throw. You should | |
2868 | discard_cleanups if no exception is caught. */ | |
2869 | ||
2870 | struct cleanup * | |
2871 | make_bpstat_clear_actions_cleanup (void) | |
2872 | { | |
2873 | return make_cleanup (do_bpstat_clear_actions_cleanup, NULL); | |
2874 | } | |
2875 | ||
38360086 | 2876 | |
e4ab2fad JK |
2877 | /* Helper for make_cleanup_free_char_ptr_vec. */ |
2878 | ||
2879 | static void | |
2880 | do_free_char_ptr_vec (void *arg) | |
2881 | { | |
19ba03f4 | 2882 | VEC (char_ptr) *char_ptr_vec = (VEC (char_ptr) *) arg; |
e4ab2fad JK |
2883 | |
2884 | free_char_ptr_vec (char_ptr_vec); | |
2885 | } | |
2886 | ||
2887 | /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and | |
2888 | final VEC_free for CHAR_PTR_VEC itself. | |
2889 | ||
2890 | You must not modify CHAR_PTR_VEC after this cleanup registration as the | |
2891 | CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free | |
2892 | this function does not (cannot) clear the pointer. */ | |
2893 | ||
2894 | struct cleanup * | |
2895 | make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec) | |
2896 | { | |
2897 | return make_cleanup (do_free_char_ptr_vec, char_ptr_vec); | |
2898 | } | |
2899 | ||
6dea1fbd JK |
2900 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
2901 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
2902 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
2903 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
2904 | |
2905 | void | |
2906 | substitute_path_component (char **stringp, const char *from, const char *to) | |
2907 | { | |
2908 | char *string = *stringp, *s; | |
2909 | const size_t from_len = strlen (from); | |
2910 | const size_t to_len = strlen (to); | |
2911 | ||
2912 | for (s = string;;) | |
2913 | { | |
2914 | s = strstr (s, from); | |
2915 | if (s == NULL) | |
2916 | break; | |
2917 | ||
1564a261 JK |
2918 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
2919 | || s[-1] == DIRNAME_SEPARATOR) | |
2920 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
2921 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
2922 | { |
2923 | char *string_new; | |
2924 | ||
224c3ddb SM |
2925 | string_new |
2926 | = (char *) xrealloc (string, (strlen (string) + to_len + 1)); | |
6dea1fbd JK |
2927 | |
2928 | /* Relocate the current S pointer. */ | |
2929 | s = s - string + string_new; | |
2930 | string = string_new; | |
2931 | ||
2932 | /* Replace from by to. */ | |
2933 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
2934 | memcpy (s, to, to_len); | |
2935 | ||
2936 | s += to_len; | |
2937 | } | |
2938 | else | |
2939 | s++; | |
2940 | } | |
2941 | ||
2942 | *stringp = string; | |
2943 | } | |
2944 | ||
0b6cb71e DE |
2945 | #ifdef HAVE_WAITPID |
2946 | ||
2947 | #ifdef SIGALRM | |
2948 | ||
2949 | /* SIGALRM handler for waitpid_with_timeout. */ | |
2950 | ||
2951 | static void | |
2952 | sigalrm_handler (int signo) | |
2953 | { | |
2954 | /* Nothing to do. */ | |
2955 | } | |
2956 | ||
2957 | #endif | |
2958 | ||
2959 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
2960 | TIMEOUT is the time to stop waiting in seconds. | |
2961 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
2962 | Returns PID if it was successfully waited for, otherwise -1. | |
2963 | ||
2964 | Timeouts are currently implemented with alarm and SIGALRM. | |
2965 | If the host does not support them, this waits "forever". | |
2966 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
2967 | ||
2968 | pid_t | |
2969 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
2970 | { | |
2971 | pid_t waitpid_result; | |
2972 | ||
2973 | gdb_assert (pid > 0); | |
2974 | gdb_assert (timeout >= 0); | |
2975 | ||
2976 | if (timeout > 0) | |
2977 | { | |
2978 | #ifdef SIGALRM | |
2979 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
2980 | struct sigaction sa, old_sa; | |
2981 | ||
2982 | sa.sa_handler = sigalrm_handler; | |
2983 | sigemptyset (&sa.sa_mask); | |
2984 | sa.sa_flags = 0; | |
2985 | sigaction (SIGALRM, &sa, &old_sa); | |
2986 | #else | |
a40805d4 | 2987 | sighandler_t ofunc; |
0b6cb71e | 2988 | |
a40805d4 | 2989 | ofunc = signal (SIGALRM, sigalrm_handler); |
0b6cb71e DE |
2990 | #endif |
2991 | ||
2992 | alarm (timeout); | |
2993 | #endif | |
2994 | ||
2995 | waitpid_result = waitpid (pid, status, 0); | |
2996 | ||
2997 | #ifdef SIGALRM | |
2998 | alarm (0); | |
2999 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3000 | sigaction (SIGALRM, &old_sa, NULL); | |
3001 | #else | |
3002 | signal (SIGALRM, ofunc); | |
3003 | #endif | |
3004 | #endif | |
3005 | } | |
3006 | else | |
3007 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3008 | ||
3009 | if (waitpid_result == pid) | |
3010 | return pid; | |
3011 | else | |
3012 | return -1; | |
3013 | } | |
3014 | ||
3015 | #endif /* HAVE_WAITPID */ | |
3016 | ||
202cbf1c JK |
3017 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3018 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3019 | ||
3020 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3021 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3022 | ||
3023 | int | |
3024 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3025 | { | |
3026 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3027 | ||
3028 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3029 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3030 | ||
3031 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3032 | { | |
3033 | char *pattern_slash, *string_slash; | |
3034 | ||
3035 | /* Replace '\' by '/' in both strings. */ | |
3036 | ||
0ae1c716 | 3037 | pattern_slash = (char *) alloca (strlen (pattern) + 1); |
202cbf1c JK |
3038 | strcpy (pattern_slash, pattern); |
3039 | pattern = pattern_slash; | |
3040 | for (; *pattern_slash != 0; pattern_slash++) | |
3041 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3042 | *pattern_slash = '/'; | |
3043 | ||
0ae1c716 | 3044 | string_slash = (char *) alloca (strlen (string) + 1); |
202cbf1c JK |
3045 | strcpy (string_slash, string); |
3046 | string = string_slash; | |
3047 | for (; *string_slash != 0; string_slash++) | |
3048 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3049 | *string_slash = '/'; | |
3050 | } | |
3051 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3052 | ||
3053 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3054 | flags |= FNM_CASEFOLD; | |
3055 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3056 | ||
3057 | return fnmatch (pattern, string, flags); | |
3058 | } | |
3059 | ||
cce0e923 DE |
3060 | /* Return the number of path elements in PATH. |
3061 | / = 1 | |
3062 | /foo = 2 | |
3063 | /foo/ = 2 | |
3064 | foo/bar = 2 | |
3065 | foo/ = 1 */ | |
3066 | ||
3067 | int | |
3068 | count_path_elements (const char *path) | |
3069 | { | |
3070 | int count = 0; | |
3071 | const char *p = path; | |
3072 | ||
3073 | if (HAS_DRIVE_SPEC (p)) | |
3074 | { | |
3075 | p = STRIP_DRIVE_SPEC (p); | |
3076 | ++count; | |
3077 | } | |
3078 | ||
3079 | while (*p != '\0') | |
3080 | { | |
3081 | if (IS_DIR_SEPARATOR (*p)) | |
3082 | ++count; | |
3083 | ++p; | |
3084 | } | |
3085 | ||
3086 | /* Backup one if last character is /, unless it's the only one. */ | |
3087 | if (p > path + 1 && IS_DIR_SEPARATOR (p[-1])) | |
3088 | --count; | |
3089 | ||
3090 | /* Add one for the file name, if present. */ | |
3091 | if (p > path && !IS_DIR_SEPARATOR (p[-1])) | |
3092 | ++count; | |
3093 | ||
3094 | return count; | |
3095 | } | |
3096 | ||
3097 | /* Remove N leading path elements from PATH. | |
3098 | N must be non-negative. | |
3099 | If PATH has more than N path elements then return NULL. | |
3100 | If PATH has exactly N path elements then return "". | |
3101 | See count_path_elements for a description of how we do the counting. */ | |
3102 | ||
3103 | const char * | |
3104 | strip_leading_path_elements (const char *path, int n) | |
3105 | { | |
3106 | int i = 0; | |
3107 | const char *p = path; | |
3108 | ||
3109 | gdb_assert (n >= 0); | |
3110 | ||
3111 | if (n == 0) | |
3112 | return p; | |
3113 | ||
3114 | if (HAS_DRIVE_SPEC (p)) | |
3115 | { | |
3116 | p = STRIP_DRIVE_SPEC (p); | |
3117 | ++i; | |
3118 | } | |
3119 | ||
3120 | while (i < n) | |
3121 | { | |
3122 | while (*p != '\0' && !IS_DIR_SEPARATOR (*p)) | |
3123 | ++p; | |
3124 | if (*p == '\0') | |
3125 | { | |
3126 | if (i + 1 == n) | |
3127 | return ""; | |
3128 | return NULL; | |
3129 | } | |
3130 | ++p; | |
3131 | ++i; | |
3132 | } | |
3133 | ||
3134 | return p; | |
3135 | } | |
3136 | ||
3c16cced PA |
3137 | void |
3138 | _initialize_utils (void) | |
3139 | { | |
3140 | add_internal_problem_command (&internal_error_problem); | |
3141 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3142 | add_internal_problem_command (&demangler_warning_problem); |
14278e1f TT |
3143 | |
3144 | #if GDB_SELF_TEST | |
1526853e | 3145 | selftests::register_test ("gdb_realpath", gdb_realpath_tests); |
14278e1f | 3146 | #endif |
3c16cced | 3147 | } |