Commit | Line | Data |
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c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
0662b6a7 PA |
71 | #include "cp-support.h" |
72 | #include <algorithm> | |
b4987c95 | 73 | #include "common/pathstuff.h" |
cbe56571 | 74 | #include "cli/cli-style.h" |
8626589c | 75 | |
9a4105ab | 76 | void (*deprecated_error_begin_hook) (void); |
c906108c SS |
77 | |
78 | /* Prototypes for local functions */ | |
79 | ||
d9fcf2fb | 80 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
a0b31db1 | 81 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
c906108c | 82 | |
d9fcf2fb | 83 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void prompt_for_continue (void); |
c906108c | 86 | |
eb0d3137 | 87 | static void set_screen_size (void); |
a14ed312 | 88 | static void set_width (void); |
c906108c | 89 | |
260c0b2a DE |
90 | /* Time spent in prompt_for_continue in the currently executing command |
91 | waiting for user to respond. | |
92 | Initialized in make_command_stats_cleanup. | |
93 | Modified in prompt_for_continue and defaulted_query. | |
94 | Used in report_command_stats. */ | |
95 | ||
dcb07cfa | 96 | static std::chrono::steady_clock::duration prompt_for_continue_wait_time; |
260c0b2a | 97 | |
75feb17d DJ |
98 | /* A flag indicating whether to timestamp debugging messages. */ |
99 | ||
100 | static int debug_timestamp = 0; | |
101 | ||
c906108c SS |
102 | /* Nonzero means that strings with character values >0x7F should be printed |
103 | as octal escapes. Zero means just print the value (e.g. it's an | |
104 | international character, and the terminal or window can cope.) */ | |
105 | ||
106 | int sevenbit_strings = 0; | |
920d2a44 AC |
107 | static void |
108 | show_sevenbit_strings (struct ui_file *file, int from_tty, | |
109 | struct cmd_list_element *c, const char *value) | |
110 | { | |
3e43a32a MS |
111 | fprintf_filtered (file, _("Printing of 8-bit characters " |
112 | "in strings as \\nnn is %s.\n"), | |
920d2a44 AC |
113 | value); |
114 | } | |
c906108c | 115 | |
c906108c SS |
116 | /* String to be printed before warning messages, if any. */ |
117 | ||
69bbf465 | 118 | const char *warning_pre_print = "\nwarning: "; |
c906108c SS |
119 | |
120 | int pagination_enabled = 1; | |
920d2a44 AC |
121 | static void |
122 | show_pagination_enabled (struct ui_file *file, int from_tty, | |
123 | struct cmd_list_element *c, const char *value) | |
124 | { | |
125 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); | |
126 | } | |
127 | ||
c906108c | 128 | \f |
c27f5738 | 129 | /* Cleanup utilities. |
c5aa993b | 130 | |
c27f5738 DE |
131 | These are not defined in cleanups.c (nor declared in cleanups.h) |
132 | because while they use the "cleanup API" they are not part of the | |
133 | "cleanup API". */ | |
7a292a7a | 134 | |
c906108c SS |
135 | /* This function is useful for cleanups. |
136 | Do | |
137 | ||
c5aa993b JM |
138 | foo = xmalloc (...); |
139 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
140 | |
141 | to arrange to free the object thus allocated. */ | |
142 | ||
143 | void | |
2f9429ae | 144 | free_current_contents (void *ptr) |
c906108c | 145 | { |
19ba03f4 | 146 | void **location = (void **) ptr; |
e0627e85 | 147 | |
e2f9c474 | 148 | if (location == NULL) |
8e65ff28 | 149 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 150 | _("free_current_contents: NULL pointer")); |
2f9429ae | 151 | if (*location != NULL) |
e2f9c474 | 152 | { |
b8c9b27d | 153 | xfree (*location); |
e2f9c474 AC |
154 | *location = NULL; |
155 | } | |
c906108c | 156 | } |
c906108c | 157 | \f |
c5aa993b | 158 | |
8731e58e | 159 | |
f5a96129 AC |
160 | /* Print a warning message. The first argument STRING is the warning |
161 | message, used as an fprintf format string, the second is the | |
162 | va_list of arguments for that string. A warning is unfiltered (not | |
163 | paginated) so that the user does not need to page through each | |
164 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
165 | |
166 | void | |
f5a96129 | 167 | vwarning (const char *string, va_list args) |
c906108c | 168 | { |
9a4105ab AC |
169 | if (deprecated_warning_hook) |
170 | (*deprecated_warning_hook) (string, args); | |
f5a96129 AC |
171 | else |
172 | { | |
223ffa71 | 173 | gdb::optional<target_terminal::scoped_restore_terminal_state> term_state; |
0d2f5c07 | 174 | if (target_supports_terminal_ours ()) |
c5ac1540 | 175 | { |
223ffa71 TT |
176 | term_state.emplace (); |
177 | target_terminal::ours_for_output (); | |
c5ac1540 | 178 | } |
0d2f5c07 GB |
179 | if (filtered_printing_initialized ()) |
180 | wrap_here (""); /* Force out any buffered output. */ | |
f5a96129 AC |
181 | gdb_flush (gdb_stdout); |
182 | if (warning_pre_print) | |
306d9ac5 | 183 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
184 | vfprintf_unfiltered (gdb_stderr, string, args); |
185 | fprintf_unfiltered (gdb_stderr, "\n"); | |
f5a96129 | 186 | } |
c906108c SS |
187 | } |
188 | ||
c906108c SS |
189 | /* Print an error message and return to command level. |
190 | The first argument STRING is the error message, used as a fprintf string, | |
191 | and the remaining args are passed as arguments to it. */ | |
192 | ||
c25c4a8b | 193 | void |
4ce44c66 JM |
194 | verror (const char *string, va_list args) |
195 | { | |
6b1b7650 | 196 | throw_verror (GENERIC_ERROR, string, args); |
4ce44c66 JM |
197 | } |
198 | ||
c25c4a8b | 199 | void |
d7e74731 | 200 | error_stream (const string_file &stream) |
2acceee2 | 201 | { |
d7e74731 | 202 | error (("%s"), stream.c_str ()); |
2acceee2 | 203 | } |
c906108c | 204 | |
2437fd32 GB |
205 | /* Emit a message and abort. */ |
206 | ||
207 | static void ATTRIBUTE_NORETURN | |
208 | abort_with_message (const char *msg) | |
209 | { | |
72542b8e | 210 | if (current_ui == NULL) |
2437fd32 GB |
211 | fputs (msg, stderr); |
212 | else | |
213 | fputs_unfiltered (msg, gdb_stderr); | |
214 | ||
215 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
216 | } | |
217 | ||
7991dee7 JK |
218 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
219 | ||
eae7090b | 220 | void |
7991dee7 JK |
221 | dump_core (void) |
222 | { | |
223 | #ifdef HAVE_SETRLIMIT | |
206c1947 | 224 | struct rlimit rlim = { (rlim_t) RLIM_INFINITY, (rlim_t) RLIM_INFINITY }; |
7991dee7 JK |
225 | |
226 | setrlimit (RLIMIT_CORE, &rlim); | |
227 | #endif /* HAVE_SETRLIMIT */ | |
228 | ||
229 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
230 | } | |
231 | ||
3e43a32a | 232 | /* Check whether GDB will be able to dump core using the dump_core |
eae7090b GB |
233 | function. Returns zero if GDB cannot or should not dump core. |
234 | If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected. | |
235 | If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */ | |
7991dee7 | 236 | |
eae7090b GB |
237 | int |
238 | can_dump_core (enum resource_limit_kind limit_kind) | |
7991dee7 JK |
239 | { |
240 | #ifdef HAVE_GETRLIMIT | |
241 | struct rlimit rlim; | |
242 | ||
243 | /* Be quiet and assume we can dump if an error is returned. */ | |
244 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
245 | return 1; | |
246 | ||
eae7090b | 247 | switch (limit_kind) |
7991dee7 | 248 | { |
eae7090b GB |
249 | case LIMIT_CUR: |
250 | if (rlim.rlim_cur == 0) | |
251 | return 0; | |
565e0eda | 252 | /* Fall through. */ |
eae7090b GB |
253 | |
254 | case LIMIT_MAX: | |
255 | if (rlim.rlim_max == 0) | |
256 | return 0; | |
7991dee7 JK |
257 | } |
258 | #endif /* HAVE_GETRLIMIT */ | |
259 | ||
260 | return 1; | |
261 | } | |
262 | ||
eae7090b GB |
263 | /* Print a warning that we cannot dump core. */ |
264 | ||
265 | void | |
266 | warn_cant_dump_core (const char *reason) | |
267 | { | |
268 | fprintf_unfiltered (gdb_stderr, | |
269 | _("%s\nUnable to dump core, use `ulimit -c" | |
270 | " unlimited' before executing GDB next time.\n"), | |
271 | reason); | |
272 | } | |
273 | ||
274 | /* Check whether GDB will be able to dump core using the dump_core | |
275 | function, and print a warning if we cannot. */ | |
276 | ||
277 | static int | |
278 | can_dump_core_warn (enum resource_limit_kind limit_kind, | |
279 | const char *reason) | |
280 | { | |
281 | int core_dump_allowed = can_dump_core (limit_kind); | |
282 | ||
283 | if (!core_dump_allowed) | |
284 | warn_cant_dump_core (reason); | |
285 | ||
286 | return core_dump_allowed; | |
287 | } | |
288 | ||
3c16cced PA |
289 | /* Allow the user to configure the debugger behavior with respect to |
290 | what to do when an internal problem is detected. */ | |
291 | ||
292 | const char internal_problem_ask[] = "ask"; | |
293 | const char internal_problem_yes[] = "yes"; | |
294 | const char internal_problem_no[] = "no"; | |
40478521 | 295 | static const char *const internal_problem_modes[] = |
3c16cced PA |
296 | { |
297 | internal_problem_ask, | |
298 | internal_problem_yes, | |
299 | internal_problem_no, | |
300 | NULL | |
301 | }; | |
3c16cced | 302 | |
581e13c1 | 303 | /* Print a message reporting an internal error/warning. Ask the user |
dec43320 AC |
304 | if they want to continue, dump core, or just exit. Return |
305 | something to indicate a quit. */ | |
c906108c | 306 | |
dec43320 | 307 | struct internal_problem |
c906108c | 308 | { |
dec43320 | 309 | const char *name; |
57fcfb1b | 310 | int user_settable_should_quit; |
3c16cced | 311 | const char *should_quit; |
57fcfb1b | 312 | int user_settable_should_dump_core; |
3c16cced | 313 | const char *should_dump_core; |
dec43320 AC |
314 | }; |
315 | ||
316 | /* Report a problem, internal to GDB, to the user. Once the problem | |
317 | has been reported, and assuming GDB didn't quit, the caller can | |
318 | either allow execution to resume or throw an error. */ | |
319 | ||
a0b31db1 | 320 | static void ATTRIBUTE_PRINTF (4, 0) |
dec43320 | 321 | internal_vproblem (struct internal_problem *problem, |
8731e58e | 322 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 323 | { |
dec43320 | 324 | static int dejavu; |
375fc983 | 325 | int quit_p; |
7be570e7 | 326 | int dump_core_p; |
e05550d7 | 327 | std::string reason; |
c906108c | 328 | |
dec43320 | 329 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
330 | { |
331 | static char msg[] = "Recursive internal problem.\n"; | |
5d502164 | 332 | |
714b1282 AC |
333 | switch (dejavu) |
334 | { | |
335 | case 0: | |
336 | dejavu = 1; | |
337 | break; | |
338 | case 1: | |
339 | dejavu = 2; | |
2437fd32 | 340 | abort_with_message (msg); |
714b1282 AC |
341 | default: |
342 | dejavu = 3; | |
bf1d7d9c JB |
343 | /* Newer GLIBC versions put the warn_unused_result attribute |
344 | on write, but this is one of those rare cases where | |
345 | ignoring the return value is correct. Casting to (void) | |
346 | does not fix this problem. This is the solution suggested | |
347 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ | |
348 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) | |
7991dee7 | 349 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
714b1282 AC |
350 | exit (1); |
351 | } | |
352 | } | |
c906108c | 353 | |
714b1282 AC |
354 | /* Create a string containing the full error/warning message. Need |
355 | to call query with this full string, as otherwize the reason | |
356 | (error/warning) and question become separated. Format using a | |
357 | style similar to a compiler error message. Include extra detail | |
358 | so that the user knows that they are living on the edge. */ | |
359 | { | |
f8bfbf22 | 360 | std::string msg = string_vprintf (fmt, ap); |
e05550d7 TT |
361 | reason = string_printf ("%s:%d: %s: %s\n" |
362 | "A problem internal to GDB has been detected,\n" | |
363 | "further debugging may prove unreliable.", | |
364 | file, line, problem->name, msg.c_str ()); | |
714b1282 | 365 | } |
7be570e7 | 366 | |
2437fd32 | 367 | /* Fall back to abort_with_message if gdb_stderr is not set up. */ |
72542b8e | 368 | if (current_ui == NULL) |
2437fd32 | 369 | { |
e05550d7 | 370 | fputs (reason.c_str (), stderr); |
2437fd32 GB |
371 | abort_with_message ("\n"); |
372 | } | |
373 | ||
374 | /* Try to get the message out and at the start of a new line. */ | |
223ffa71 | 375 | gdb::optional<target_terminal::scoped_restore_terminal_state> term_state; |
2437fd32 | 376 | if (target_supports_terminal_ours ()) |
c5ac1540 | 377 | { |
223ffa71 TT |
378 | term_state.emplace (); |
379 | target_terminal::ours_for_output (); | |
c5ac1540 | 380 | } |
2437fd32 GB |
381 | if (filtered_printing_initialized ()) |
382 | begin_line (); | |
383 | ||
196a707b | 384 | /* Emit the message unless query will emit it below. */ |
2437fd32 GB |
385 | if (problem->should_quit != internal_problem_ask |
386 | || !confirm | |
387 | || !filtered_printing_initialized ()) | |
e05550d7 | 388 | fprintf_unfiltered (gdb_stderr, "%s\n", reason.c_str ()); |
196a707b | 389 | |
3c16cced | 390 | if (problem->should_quit == internal_problem_ask) |
dec43320 | 391 | { |
dec43320 | 392 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
3c16cced PA |
393 | this lessens the likelihood of GDB going into an infinite |
394 | loop. */ | |
2437fd32 | 395 | if (!confirm || !filtered_printing_initialized ()) |
196a707b | 396 | quit_p = 1; |
26bb68be | 397 | else |
e05550d7 TT |
398 | quit_p = query (_("%s\nQuit this debugging session? "), |
399 | reason.c_str ()); | |
dec43320 | 400 | } |
3c16cced PA |
401 | else if (problem->should_quit == internal_problem_yes) |
402 | quit_p = 1; | |
403 | else if (problem->should_quit == internal_problem_no) | |
404 | quit_p = 0; | |
405 | else | |
406 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
dec43320 | 407 | |
add6c04d GB |
408 | fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr); |
409 | if (REPORT_BUGS_TO[0]) | |
410 | fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."), | |
411 | REPORT_BUGS_TO); | |
412 | fputs_unfiltered ("\n\n", gdb_stderr); | |
413 | ||
3c16cced | 414 | if (problem->should_dump_core == internal_problem_ask) |
dec43320 | 415 | { |
e05550d7 | 416 | if (!can_dump_core_warn (LIMIT_MAX, reason.c_str ())) |
7991dee7 | 417 | dump_core_p = 0; |
2437fd32 GB |
418 | else if (!filtered_printing_initialized ()) |
419 | dump_core_p = 1; | |
7991dee7 JK |
420 | else |
421 | { | |
422 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
423 | `dropping' so that it is easier to see that something went | |
424 | wrong in GDB. */ | |
e05550d7 TT |
425 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), |
426 | reason.c_str ()); | |
7991dee7 | 427 | } |
dec43320 | 428 | } |
3c16cced | 429 | else if (problem->should_dump_core == internal_problem_yes) |
e05550d7 | 430 | dump_core_p = can_dump_core_warn (LIMIT_MAX, reason.c_str ()); |
3c16cced PA |
431 | else if (problem->should_dump_core == internal_problem_no) |
432 | dump_core_p = 0; | |
433 | else | |
434 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7be570e7 | 435 | |
375fc983 | 436 | if (quit_p) |
7be570e7 JM |
437 | { |
438 | if (dump_core_p) | |
7991dee7 | 439 | dump_core (); |
375fc983 AC |
440 | else |
441 | exit (1); | |
7be570e7 JM |
442 | } |
443 | else | |
444 | { | |
445 | if (dump_core_p) | |
375fc983 | 446 | { |
9b265ec2 | 447 | #ifdef HAVE_WORKING_FORK |
375fc983 | 448 | if (fork () == 0) |
7991dee7 | 449 | dump_core (); |
9b265ec2 | 450 | #endif |
375fc983 | 451 | } |
7be570e7 | 452 | } |
96baa820 JM |
453 | |
454 | dejavu = 0; | |
dec43320 AC |
455 | } |
456 | ||
457 | static struct internal_problem internal_error_problem = { | |
57fcfb1b | 458 | "internal-error", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
459 | }; |
460 | ||
c25c4a8b | 461 | void |
8731e58e | 462 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
463 | { |
464 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
2c51604d | 465 | throw_quit (_("Command aborted.")); |
c906108c SS |
466 | } |
467 | ||
dec43320 | 468 | static struct internal_problem internal_warning_problem = { |
57fcfb1b | 469 | "internal-warning", 1, internal_problem_ask, 1, internal_problem_ask |
dec43320 AC |
470 | }; |
471 | ||
472 | void | |
8731e58e | 473 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
474 | { |
475 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
476 | } | |
477 | ||
57fcfb1b GB |
478 | static struct internal_problem demangler_warning_problem = { |
479 | "demangler-warning", 1, internal_problem_ask, 0, internal_problem_no | |
480 | }; | |
481 | ||
482 | void | |
483 | demangler_vwarning (const char *file, int line, const char *fmt, va_list ap) | |
484 | { | |
485 | internal_vproblem (&demangler_warning_problem, file, line, fmt, ap); | |
486 | } | |
487 | ||
488 | void | |
489 | demangler_warning (const char *file, int line, const char *string, ...) | |
490 | { | |
491 | va_list ap; | |
492 | ||
493 | va_start (ap, string); | |
494 | demangler_vwarning (file, line, string, ap); | |
495 | va_end (ap); | |
496 | } | |
497 | ||
3c16cced PA |
498 | /* Dummy functions to keep add_prefix_cmd happy. */ |
499 | ||
500 | static void | |
981a3fb3 | 501 | set_internal_problem_cmd (const char *args, int from_tty) |
3c16cced PA |
502 | { |
503 | } | |
504 | ||
505 | static void | |
981a3fb3 | 506 | show_internal_problem_cmd (const char *args, int from_tty) |
3c16cced PA |
507 | { |
508 | } | |
509 | ||
510 | /* When GDB reports an internal problem (error or warning) it gives | |
511 | the user the opportunity to quit GDB and/or create a core file of | |
512 | the current debug session. This function registers a few commands | |
513 | that make it possible to specify that GDB should always or never | |
514 | quit or create a core file, without asking. The commands look | |
515 | like: | |
516 | ||
517 | maint set PROBLEM-NAME quit ask|yes|no | |
518 | maint show PROBLEM-NAME quit | |
519 | maint set PROBLEM-NAME corefile ask|yes|no | |
520 | maint show PROBLEM-NAME corefile | |
521 | ||
522 | Where PROBLEM-NAME is currently "internal-error" or | |
523 | "internal-warning". */ | |
524 | ||
525 | static void | |
526 | add_internal_problem_command (struct internal_problem *problem) | |
527 | { | |
528 | struct cmd_list_element **set_cmd_list; | |
529 | struct cmd_list_element **show_cmd_list; | |
530 | char *set_doc; | |
531 | char *show_doc; | |
532 | ||
8d749320 SM |
533 | set_cmd_list = XNEW (struct cmd_list_element *); |
534 | show_cmd_list = XNEW (struct cmd_list_element *); | |
3c16cced PA |
535 | *set_cmd_list = NULL; |
536 | *show_cmd_list = NULL; | |
537 | ||
538 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), | |
539 | problem->name); | |
540 | ||
541 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), | |
542 | problem->name); | |
543 | ||
981a3fb3 | 544 | add_prefix_cmd (problem->name, |
3c16cced PA |
545 | class_maintenance, set_internal_problem_cmd, set_doc, |
546 | set_cmd_list, | |
c4f7c687 MK |
547 | concat ("maintenance set ", problem->name, " ", |
548 | (char *) NULL), | |
3c16cced PA |
549 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
550 | ||
981a3fb3 | 551 | add_prefix_cmd (problem->name, |
3c16cced PA |
552 | class_maintenance, show_internal_problem_cmd, show_doc, |
553 | show_cmd_list, | |
c4f7c687 MK |
554 | concat ("maintenance show ", problem->name, " ", |
555 | (char *) NULL), | |
3c16cced PA |
556 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
557 | ||
57fcfb1b GB |
558 | if (problem->user_settable_should_quit) |
559 | { | |
560 | set_doc = xstrprintf (_("Set whether GDB should quit " | |
561 | "when an %s is detected"), | |
562 | problem->name); | |
563 | show_doc = xstrprintf (_("Show whether GDB will quit " | |
564 | "when an %s is detected"), | |
565 | problem->name); | |
566 | add_setshow_enum_cmd ("quit", class_maintenance, | |
567 | internal_problem_modes, | |
568 | &problem->should_quit, | |
569 | set_doc, | |
570 | show_doc, | |
571 | NULL, /* help_doc */ | |
572 | NULL, /* setfunc */ | |
573 | NULL, /* showfunc */ | |
574 | set_cmd_list, | |
575 | show_cmd_list); | |
576 | ||
577 | xfree (set_doc); | |
578 | xfree (show_doc); | |
579 | } | |
1eefb858 | 580 | |
57fcfb1b GB |
581 | if (problem->user_settable_should_dump_core) |
582 | { | |
583 | set_doc = xstrprintf (_("Set whether GDB should create a core " | |
584 | "file of GDB when %s is detected"), | |
585 | problem->name); | |
586 | show_doc = xstrprintf (_("Show whether GDB will create a core " | |
587 | "file of GDB when %s is detected"), | |
588 | problem->name); | |
589 | add_setshow_enum_cmd ("corefile", class_maintenance, | |
590 | internal_problem_modes, | |
591 | &problem->should_dump_core, | |
592 | set_doc, | |
593 | show_doc, | |
594 | NULL, /* help_doc */ | |
595 | NULL, /* setfunc */ | |
596 | NULL, /* showfunc */ | |
597 | set_cmd_list, | |
598 | show_cmd_list); | |
599 | ||
600 | xfree (set_doc); | |
601 | xfree (show_doc); | |
602 | } | |
3c16cced PA |
603 | } |
604 | ||
0cf4063e | 605 | /* Return a newly allocated string, containing the PREFIX followed |
18e9961f | 606 | by the system error message for errno (separated by a colon). */ |
0cf4063e | 607 | |
18e9961f | 608 | static std::string |
0cf4063e JB |
609 | perror_string (const char *prefix) |
610 | { | |
611 | char *err; | |
0cf4063e JB |
612 | |
613 | err = safe_strerror (errno); | |
18e9961f | 614 | return std::string (prefix) + ": " + err; |
0cf4063e JB |
615 | } |
616 | ||
c906108c | 617 | /* Print the system error message for errno, and also mention STRING |
598d3636 JK |
618 | as the file name for which the error was encountered. Use ERRCODE |
619 | for the thrown exception. Then return to command level. */ | |
c906108c | 620 | |
c25c4a8b | 621 | void |
598d3636 | 622 | throw_perror_with_name (enum errors errcode, const char *string) |
c906108c | 623 | { |
18e9961f | 624 | std::string combined = perror_string (string); |
c906108c SS |
625 | |
626 | /* I understand setting these is a matter of taste. Still, some people | |
627 | may clear errno but not know about bfd_error. Doing this here is not | |
581e13c1 | 628 | unreasonable. */ |
c906108c SS |
629 | bfd_set_error (bfd_error_no_error); |
630 | errno = 0; | |
631 | ||
18e9961f | 632 | throw_error (errcode, _("%s."), combined.c_str ()); |
598d3636 JK |
633 | } |
634 | ||
635 | /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */ | |
636 | ||
637 | void | |
638 | perror_with_name (const char *string) | |
639 | { | |
640 | throw_perror_with_name (GENERIC_ERROR, string); | |
c906108c SS |
641 | } |
642 | ||
7c647d61 JB |
643 | /* Same as perror_with_name except that it prints a warning instead |
644 | of throwing an error. */ | |
645 | ||
646 | void | |
647 | perror_warning_with_name (const char *string) | |
648 | { | |
18e9961f TT |
649 | std::string combined = perror_string (string); |
650 | warning (_("%s"), combined.c_str ()); | |
7c647d61 JB |
651 | } |
652 | ||
c906108c SS |
653 | /* Print the system error message for ERRCODE, and also mention STRING |
654 | as the file name for which the error was encountered. */ | |
655 | ||
656 | void | |
6972bc8b | 657 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
658 | { |
659 | char *err; | |
660 | char *combined; | |
661 | ||
662 | err = safe_strerror (errcode); | |
663 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
664 | strcpy (combined, string); | |
665 | strcat (combined, ": "); | |
666 | strcat (combined, err); | |
667 | ||
668 | /* We want anything which was printed on stdout to come out first, before | |
669 | this message. */ | |
670 | gdb_flush (gdb_stdout); | |
671 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
672 | } | |
673 | ||
674 | /* Control C eventually causes this to be called, at a convenient time. */ | |
675 | ||
676 | void | |
fba45db2 | 677 | quit (void) |
c906108c | 678 | { |
06c868a8 JK |
679 | if (sync_quit_force_run) |
680 | { | |
681 | sync_quit_force_run = 0; | |
268a799a | 682 | quit_force (NULL, 0); |
06c868a8 JK |
683 | } |
684 | ||
7be570e7 JM |
685 | #ifdef __MSDOS__ |
686 | /* No steenking SIGINT will ever be coming our way when the | |
687 | program is resumed. Don't lie. */ | |
2c51604d | 688 | throw_quit ("Quit"); |
7be570e7 | 689 | #else |
c906108c | 690 | if (job_control |
8731e58e AC |
691 | /* If there is no terminal switching for this target, then we can't |
692 | possibly get screwed by the lack of job control. */ | |
b0ed115f | 693 | || !target_supports_terminal_ours ()) |
2c51604d | 694 | throw_quit ("Quit"); |
c906108c | 695 | else |
2c51604d | 696 | throw_quit ("Quit (expect signal SIGINT when the program is resumed)"); |
7be570e7 | 697 | #endif |
c906108c SS |
698 | } |
699 | ||
abc56d60 PA |
700 | /* See defs.h. */ |
701 | ||
702 | void | |
703 | maybe_quit (void) | |
704 | { | |
048094ac | 705 | if (sync_quit_force_run) |
abc56d60 | 706 | quit (); |
048094ac PA |
707 | |
708 | quit_handler (); | |
709 | ||
abc56d60 PA |
710 | if (deprecated_interactive_hook) |
711 | deprecated_interactive_hook (); | |
abc56d60 PA |
712 | } |
713 | ||
c906108c | 714 | \f |
c906108c | 715 | /* Called when a memory allocation fails, with the number of bytes of |
581e13c1 | 716 | memory requested in SIZE. */ |
c906108c | 717 | |
c25c4a8b | 718 | void |
d26e3629 | 719 | malloc_failure (long size) |
c906108c SS |
720 | { |
721 | if (size > 0) | |
722 | { | |
8e65ff28 | 723 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 724 | _("virtual memory exhausted: can't allocate %ld bytes."), |
8731e58e | 725 | size); |
c906108c SS |
726 | } |
727 | else | |
728 | { | |
e2e0b3e5 | 729 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
c906108c SS |
730 | } |
731 | } | |
732 | ||
c906108c SS |
733 | /* My replacement for the read system call. |
734 | Used like `read' but keeps going if `read' returns too soon. */ | |
735 | ||
736 | int | |
fba45db2 | 737 | myread (int desc, char *addr, int len) |
c906108c | 738 | { |
52f0bd74 | 739 | int val; |
c906108c SS |
740 | int orglen = len; |
741 | ||
742 | while (len > 0) | |
743 | { | |
744 | val = read (desc, addr, len); | |
745 | if (val < 0) | |
746 | return val; | |
747 | if (val == 0) | |
748 | return orglen - len; | |
749 | len -= val; | |
750 | addr += val; | |
751 | } | |
752 | return orglen; | |
753 | } | |
d26e3629 | 754 | |
c906108c | 755 | void |
aa1ee363 | 756 | print_spaces (int n, struct ui_file *file) |
c906108c | 757 | { |
392a587b | 758 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
759 | } |
760 | ||
761 | /* Print a host address. */ | |
762 | ||
763 | void | |
b80c3053 | 764 | gdb_print_host_address_1 (const void *addr, struct ui_file *stream) |
c906108c | 765 | { |
ea8992ce | 766 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
c906108c | 767 | } |
7c50a931 DE |
768 | |
769 | /* See utils.h. */ | |
770 | ||
771 | char * | |
772 | make_hex_string (const gdb_byte *data, size_t length) | |
773 | { | |
224c3ddb | 774 | char *result = (char *) xmalloc (length * 2 + 1); |
7c50a931 DE |
775 | char *p; |
776 | size_t i; | |
777 | ||
778 | p = result; | |
779 | for (i = 0; i < length; ++i) | |
dc4d6886 | 780 | p += xsnprintf (p, 3, "%02x", data[i]); |
7c50a931 DE |
781 | *p = '\0'; |
782 | return result; | |
783 | } | |
784 | ||
c906108c | 785 | \f |
c5aa993b | 786 | |
223ffa71 TT |
787 | /* An RAII class that sets up to handle input and then tears down |
788 | during destruction. */ | |
3eb7562a | 789 | |
223ffa71 | 790 | class scoped_input_handler |
3eb7562a | 791 | { |
223ffa71 | 792 | public: |
3eb7562a | 793 | |
223ffa71 | 794 | scoped_input_handler () |
c2f97536 | 795 | : m_quit_handler (&quit_handler, default_quit_handler), |
223ffa71 TT |
796 | m_ui (NULL) |
797 | { | |
798 | target_terminal::ours (); | |
799 | ui_register_input_event_handler (current_ui); | |
800 | if (current_ui->prompt_state == PROMPT_BLOCKED) | |
801 | m_ui = current_ui; | |
802 | } | |
3eb7562a | 803 | |
223ffa71 TT |
804 | ~scoped_input_handler () |
805 | { | |
806 | if (m_ui != NULL) | |
807 | ui_unregister_input_event_handler (m_ui); | |
808 | } | |
3eb7562a | 809 | |
223ffa71 | 810 | DISABLE_COPY_AND_ASSIGN (scoped_input_handler); |
3eb7562a | 811 | |
223ffa71 | 812 | private: |
3eb7562a | 813 | |
223ffa71 TT |
814 | /* Save and restore the terminal state. */ |
815 | target_terminal::scoped_restore_terminal_state m_term_state; | |
3eb7562a | 816 | |
223ffa71 | 817 | /* Save and restore the quit handler. */ |
c2f97536 | 818 | scoped_restore_tmpl<quit_handler_ftype *> m_quit_handler; |
223ffa71 TT |
819 | |
820 | /* The saved UI, if non-NULL. */ | |
821 | struct ui *m_ui; | |
822 | }; | |
3eb7562a | 823 | |
db1ff28b JK |
824 | \f |
825 | ||
981c7f5a | 826 | /* This function supports the query, nquery, and yquery functions. |
cbdeadca | 827 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
981c7f5a DJ |
828 | answer is yes, or default the answer to the specified default |
829 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a | |
830 | default answer, or '\0' for no default. | |
cbdeadca JJ |
831 | CTLSTR is the control string and should end in "? ". It should |
832 | not say how to answer, because we do that. | |
833 | ARGS are the arguments passed along with the CTLSTR argument to | |
834 | printf. */ | |
835 | ||
a0b31db1 | 836 | static int ATTRIBUTE_PRINTF (1, 0) |
cbdeadca JJ |
837 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
838 | { | |
cbdeadca JJ |
839 | int retval; |
840 | int def_value; | |
841 | char def_answer, not_def_answer; | |
a121b7c1 | 842 | const char *y_string, *n_string; |
cbdeadca JJ |
843 | |
844 | /* Set up according to which answer is the default. */ | |
981c7f5a DJ |
845 | if (defchar == '\0') |
846 | { | |
847 | def_value = 1; | |
848 | def_answer = 'Y'; | |
849 | not_def_answer = 'N'; | |
850 | y_string = "y"; | |
851 | n_string = "n"; | |
852 | } | |
853 | else if (defchar == 'y') | |
cbdeadca JJ |
854 | { |
855 | def_value = 1; | |
856 | def_answer = 'Y'; | |
857 | not_def_answer = 'N'; | |
858 | y_string = "[y]"; | |
859 | n_string = "n"; | |
860 | } | |
861 | else | |
862 | { | |
863 | def_value = 0; | |
864 | def_answer = 'N'; | |
865 | not_def_answer = 'Y'; | |
866 | y_string = "y"; | |
867 | n_string = "[n]"; | |
868 | } | |
869 | ||
981c7f5a | 870 | /* Automatically answer the default value if the user did not want |
a502cf95 | 871 | prompts or the command was issued with the server prefix. */ |
e360902b | 872 | if (!confirm || server_command) |
981c7f5a DJ |
873 | return def_value; |
874 | ||
875 | /* If input isn't coming from the user directly, just say what | |
7a01c6e0 | 876 | question we're asking, and then answer the default automatically. This |
981c7f5a DJ |
877 | way, important error messages don't get lost when talking to GDB |
878 | over a pipe. */ | |
268a799a | 879 | if (current_ui->instream != current_ui->stdin_stream |
26a06916 SM |
880 | || !input_interactive_p (current_ui) |
881 | /* Restrict queries to the main UI. */ | |
882 | || current_ui != main_ui) | |
981c7f5a | 883 | { |
223ffa71 TT |
884 | target_terminal::scoped_restore_terminal_state term_state; |
885 | target_terminal::ours_for_output (); | |
981c7f5a DJ |
886 | wrap_here (""); |
887 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
888 | ||
3e43a32a MS |
889 | printf_filtered (_("(%s or %s) [answered %c; " |
890 | "input not from terminal]\n"), | |
981c7f5a DJ |
891 | y_string, n_string, def_answer); |
892 | gdb_flush (gdb_stdout); | |
893 | ||
894 | return def_value; | |
895 | } | |
896 | ||
9a4105ab | 897 | if (deprecated_query_hook) |
cbdeadca | 898 | { |
223ffa71 TT |
899 | target_terminal::scoped_restore_terminal_state term_state; |
900 | return deprecated_query_hook (ctlstr, args); | |
651ce16a | 901 | } |
80dbc9fd | 902 | |
981c7f5a | 903 | /* Format the question outside of the loop, to avoid reusing args. */ |
e05550d7 TT |
904 | std::string question = string_vprintf (ctlstr, args); |
905 | std::string prompt | |
906 | = string_printf (_("%s%s(%s or %s) %s"), | |
907 | annotation_level > 1 ? "\n\032\032pre-query\n" : "", | |
908 | question.c_str (), y_string, n_string, | |
909 | annotation_level > 1 ? "\n\032\032query\n" : ""); | |
981c7f5a | 910 | |
dcb07cfa PA |
911 | /* Used to add duration we waited for user to respond to |
912 | prompt_for_continue_wait_time. */ | |
913 | using namespace std::chrono; | |
914 | steady_clock::time_point prompt_started = steady_clock::now (); | |
260c0b2a | 915 | |
223ffa71 | 916 | scoped_input_handler prepare_input; |
651ce16a | 917 | |
cbdeadca JJ |
918 | while (1) |
919 | { | |
588dcc3e | 920 | char *response, answer; |
cbdeadca | 921 | |
cbdeadca | 922 | gdb_flush (gdb_stdout); |
e05550d7 | 923 | response = gdb_readline_wrapper (prompt.c_str ()); |
cbdeadca | 924 | |
588dcc3e | 925 | if (response == NULL) /* C-d */ |
cbdeadca | 926 | { |
fa3fd85b | 927 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
cbdeadca JJ |
928 | retval = def_value; |
929 | break; | |
930 | } | |
588dcc3e PP |
931 | |
932 | answer = response[0]; | |
933 | xfree (response); | |
cbdeadca JJ |
934 | |
935 | if (answer >= 'a') | |
936 | answer -= 040; | |
937 | /* Check answer. For the non-default, the user must specify | |
938 | the non-default explicitly. */ | |
939 | if (answer == not_def_answer) | |
940 | { | |
941 | retval = !def_value; | |
942 | break; | |
943 | } | |
981c7f5a DJ |
944 | /* Otherwise, if a default was specified, the user may either |
945 | specify the required input or have it default by entering | |
946 | nothing. */ | |
947 | if (answer == def_answer | |
588dcc3e | 948 | || (defchar != '\0' && answer == '\0')) |
cbdeadca JJ |
949 | { |
950 | retval = def_value; | |
951 | break; | |
952 | } | |
953 | /* Invalid entries are not defaulted and require another selection. */ | |
a3f17187 | 954 | printf_filtered (_("Please answer %s or %s.\n"), |
cbdeadca JJ |
955 | y_string, n_string); |
956 | } | |
957 | ||
260c0b2a | 958 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 959 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 960 | |
cbdeadca | 961 | if (annotation_level > 1) |
a3f17187 | 962 | printf_filtered (("\n\032\032post-query\n")); |
cbdeadca JJ |
963 | return retval; |
964 | } | |
965 | \f | |
966 | ||
967 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
968 | answer is yes, or 0 if answer is defaulted. | |
969 | Takes three args which are given to printf to print the question. | |
970 | The first, a control string, should end in "? ". | |
971 | It should not say how to answer, because we do that. */ | |
972 | ||
973 | int | |
974 | nquery (const char *ctlstr, ...) | |
975 | { | |
976 | va_list args; | |
899500d6 | 977 | int ret; |
cbdeadca JJ |
978 | |
979 | va_start (args, ctlstr); | |
899500d6 | 980 | ret = defaulted_query (ctlstr, 'n', args); |
cbdeadca | 981 | va_end (args); |
899500d6 | 982 | return ret; |
cbdeadca JJ |
983 | } |
984 | ||
985 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if | |
986 | answer is yes, or 1 if answer is defaulted. | |
987 | Takes three args which are given to printf to print the question. | |
988 | The first, a control string, should end in "? ". | |
989 | It should not say how to answer, because we do that. */ | |
990 | ||
991 | int | |
992 | yquery (const char *ctlstr, ...) | |
993 | { | |
994 | va_list args; | |
899500d6 | 995 | int ret; |
cbdeadca JJ |
996 | |
997 | va_start (args, ctlstr); | |
899500d6 | 998 | ret = defaulted_query (ctlstr, 'y', args); |
cbdeadca | 999 | va_end (args); |
899500d6 | 1000 | return ret; |
cbdeadca JJ |
1001 | } |
1002 | ||
981c7f5a DJ |
1003 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
1004 | Takes three args which are given to printf to print the question. | |
1005 | The first, a control string, should end in "? ". | |
1006 | It should not say how to answer, because we do that. */ | |
1007 | ||
1008 | int | |
1009 | query (const char *ctlstr, ...) | |
1010 | { | |
1011 | va_list args; | |
899500d6 | 1012 | int ret; |
981c7f5a DJ |
1013 | |
1014 | va_start (args, ctlstr); | |
899500d6 | 1015 | ret = defaulted_query (ctlstr, '\0', args); |
981c7f5a | 1016 | va_end (args); |
899500d6 | 1017 | return ret; |
981c7f5a DJ |
1018 | } |
1019 | ||
6c7a06a3 TT |
1020 | /* A helper for parse_escape that converts a host character to a |
1021 | target character. C is the host character. If conversion is | |
1022 | possible, then the target character is stored in *TARGET_C and the | |
1023 | function returns 1. Otherwise, the function returns 0. */ | |
1024 | ||
1025 | static int | |
f870a310 | 1026 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
234b45d4 | 1027 | { |
6c7a06a3 | 1028 | char the_char = c; |
6c7a06a3 | 1029 | int result = 0; |
234b45d4 | 1030 | |
8268c778 | 1031 | auto_obstack host_data; |
234b45d4 | 1032 | |
f870a310 | 1033 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
ac91cd70 PA |
1034 | (gdb_byte *) &the_char, 1, 1, |
1035 | &host_data, translit_none); | |
6c7a06a3 TT |
1036 | |
1037 | if (obstack_object_size (&host_data) == 1) | |
1038 | { | |
1039 | result = 1; | |
1040 | *target_c = *(char *) obstack_base (&host_data); | |
1041 | } | |
1042 | ||
6c7a06a3 | 1043 | return result; |
234b45d4 KB |
1044 | } |
1045 | ||
c906108c SS |
1046 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1047 | containing a pointer to the string to parse. That pointer | |
1048 | should point to the character after the \. That pointer | |
1049 | is updated past the characters we use. The value of the | |
1050 | escape sequence is returned. | |
1051 | ||
1052 | A negative value means the sequence \ newline was seen, | |
1053 | which is supposed to be equivalent to nothing at all. | |
1054 | ||
1055 | If \ is followed by a null character, we return a negative | |
1056 | value and leave the string pointer pointing at the null character. | |
1057 | ||
1058 | If \ is followed by 000, we return 0 and leave the string pointer | |
1059 | after the zeros. A value of 0 does not mean end of string. */ | |
1060 | ||
1061 | int | |
d7561cbb | 1062 | parse_escape (struct gdbarch *gdbarch, const char **string_ptr) |
c906108c | 1063 | { |
581e13c1 | 1064 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
52f0bd74 | 1065 | int c = *(*string_ptr)++; |
e0627e85 | 1066 | |
6c7a06a3 TT |
1067 | switch (c) |
1068 | { | |
8731e58e AC |
1069 | case '\n': |
1070 | return -2; | |
1071 | case 0: | |
1072 | (*string_ptr)--; | |
1073 | return 0; | |
8731e58e AC |
1074 | |
1075 | case '0': | |
1076 | case '1': | |
1077 | case '2': | |
1078 | case '3': | |
1079 | case '4': | |
1080 | case '5': | |
1081 | case '6': | |
1082 | case '7': | |
1083 | { | |
6c7a06a3 | 1084 | int i = host_hex_value (c); |
aa1ee363 | 1085 | int count = 0; |
8731e58e AC |
1086 | while (++count < 3) |
1087 | { | |
5cb316ef | 1088 | c = (**string_ptr); |
6c7a06a3 | 1089 | if (isdigit (c) && c != '8' && c != '9') |
8731e58e | 1090 | { |
5cb316ef | 1091 | (*string_ptr)++; |
8731e58e | 1092 | i *= 8; |
6c7a06a3 | 1093 | i += host_hex_value (c); |
8731e58e AC |
1094 | } |
1095 | else | |
1096 | { | |
8731e58e AC |
1097 | break; |
1098 | } | |
1099 | } | |
1100 | return i; | |
1101 | } | |
6c7a06a3 TT |
1102 | |
1103 | case 'a': | |
1104 | c = '\a'; | |
1105 | break; | |
1106 | case 'b': | |
1107 | c = '\b'; | |
1108 | break; | |
1109 | case 'f': | |
1110 | c = '\f'; | |
1111 | break; | |
1112 | case 'n': | |
1113 | c = '\n'; | |
1114 | break; | |
1115 | case 'r': | |
1116 | c = '\r'; | |
1117 | break; | |
1118 | case 't': | |
1119 | c = '\t'; | |
1120 | break; | |
1121 | case 'v': | |
1122 | c = '\v'; | |
1123 | break; | |
1124 | ||
1125 | default: | |
1126 | break; | |
1127 | } | |
1128 | ||
f870a310 | 1129 | if (!host_char_to_target (gdbarch, c, &target_char)) |
3351ea09 JB |
1130 | error (_("The escape sequence `\\%c' is equivalent to plain `%c'," |
1131 | " which has no equivalent\nin the `%s' character set."), | |
905b671b | 1132 | c, c, target_charset (gdbarch)); |
6c7a06a3 | 1133 | return target_char; |
c906108c SS |
1134 | } |
1135 | \f | |
1136 | /* Print the character C on STREAM as part of the contents of a literal | |
1137 | string whose delimiter is QUOTER. Note that this routine should only | |
f9acce4a | 1138 | be called for printing things which are independent of the language |
6ef284bd SM |
1139 | of the program being debugged. |
1140 | ||
1141 | printchar will normally escape backslashes and instances of QUOTER. If | |
1142 | QUOTER is 0, printchar won't escape backslashes or any quoting character. | |
1143 | As a side effect, if you pass the backslash character as the QUOTER, | |
1144 | printchar will escape backslashes as usual, but not any other quoting | |
1145 | character. */ | |
c906108c | 1146 | |
43e526b9 | 1147 | static void |
7c4e78cf | 1148 | printchar (int c, do_fputc_ftype do_fputc, ui_file *stream, int quoter) |
c906108c | 1149 | { |
c906108c SS |
1150 | c &= 0xFF; /* Avoid sign bit follies */ |
1151 | ||
c5aa993b JM |
1152 | if (c < 0x20 || /* Low control chars */ |
1153 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1154 | (sevenbit_strings && c >= 0x80)) | |
1155 | { /* high order bit set */ | |
7c4e78cf SM |
1156 | do_fputc ('\\', stream); |
1157 | ||
c5aa993b JM |
1158 | switch (c) |
1159 | { | |
1160 | case '\n': | |
7c4e78cf | 1161 | do_fputc ('n', stream); |
c5aa993b JM |
1162 | break; |
1163 | case '\b': | |
7c4e78cf | 1164 | do_fputc ('b', stream); |
c5aa993b JM |
1165 | break; |
1166 | case '\t': | |
7c4e78cf | 1167 | do_fputc ('t', stream); |
c5aa993b JM |
1168 | break; |
1169 | case '\f': | |
7c4e78cf | 1170 | do_fputc ('f', stream); |
c5aa993b JM |
1171 | break; |
1172 | case '\r': | |
7c4e78cf | 1173 | do_fputc ('r', stream); |
c5aa993b JM |
1174 | break; |
1175 | case '\033': | |
7c4e78cf | 1176 | do_fputc ('e', stream); |
c5aa993b JM |
1177 | break; |
1178 | case '\007': | |
7c4e78cf | 1179 | do_fputc ('a', stream); |
c5aa993b JM |
1180 | break; |
1181 | default: | |
7c4e78cf SM |
1182 | { |
1183 | do_fputc ('0' + ((c >> 6) & 0x7), stream); | |
1184 | do_fputc ('0' + ((c >> 3) & 0x7), stream); | |
1185 | do_fputc ('0' + ((c >> 0) & 0x7), stream); | |
1186 | break; | |
1187 | } | |
c5aa993b JM |
1188 | } |
1189 | } | |
1190 | else | |
1191 | { | |
6ef284bd | 1192 | if (quoter != 0 && (c == '\\' || c == quoter)) |
7c4e78cf SM |
1193 | do_fputc ('\\', stream); |
1194 | do_fputc (c, stream); | |
c5aa993b | 1195 | } |
c906108c | 1196 | } |
43e526b9 JM |
1197 | |
1198 | /* Print the character C on STREAM as part of the contents of a | |
1199 | literal string whose delimiter is QUOTER. Note that these routines | |
1200 | should only be call for printing things which are independent of | |
581e13c1 | 1201 | the language of the program being debugged. */ |
43e526b9 JM |
1202 | |
1203 | void | |
fba45db2 | 1204 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1205 | { |
1206 | while (*str) | |
7c4e78cf | 1207 | printchar (*str++, fputc_filtered, stream, quoter); |
43e526b9 JM |
1208 | } |
1209 | ||
1210 | void | |
fba45db2 | 1211 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1212 | { |
1213 | while (*str) | |
7c4e78cf | 1214 | printchar (*str++, fputc_unfiltered, stream, quoter); |
43e526b9 JM |
1215 | } |
1216 | ||
0876f84a DJ |
1217 | void |
1218 | fputstrn_filtered (const char *str, int n, int quoter, | |
1219 | struct ui_file *stream) | |
1220 | { | |
7c4e78cf SM |
1221 | for (int i = 0; i < n; i++) |
1222 | printchar (str[i], fputc_filtered, stream, quoter); | |
0876f84a DJ |
1223 | } |
1224 | ||
43e526b9 | 1225 | void |
8731e58e | 1226 | fputstrn_unfiltered (const char *str, int n, int quoter, |
7c4e78cf | 1227 | do_fputc_ftype do_fputc, struct ui_file *stream) |
43e526b9 | 1228 | { |
7c4e78cf SM |
1229 | for (int i = 0; i < n; i++) |
1230 | printchar (str[i], do_fputc, stream, quoter); | |
43e526b9 | 1231 | } |
c906108c | 1232 | \f |
c5aa993b | 1233 | |
c906108c SS |
1234 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1235 | static unsigned int lines_per_page; | |
920d2a44 AC |
1236 | static void |
1237 | show_lines_per_page (struct ui_file *file, int from_tty, | |
1238 | struct cmd_list_element *c, const char *value) | |
1239 | { | |
3e43a32a MS |
1240 | fprintf_filtered (file, |
1241 | _("Number of lines gdb thinks are in a page is %s.\n"), | |
920d2a44 AC |
1242 | value); |
1243 | } | |
eb0d3137 | 1244 | |
cbfbd72a | 1245 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1246 | static unsigned int chars_per_line; |
920d2a44 AC |
1247 | static void |
1248 | show_chars_per_line (struct ui_file *file, int from_tty, | |
1249 | struct cmd_list_element *c, const char *value) | |
1250 | { | |
3e43a32a MS |
1251 | fprintf_filtered (file, |
1252 | _("Number of characters gdb thinks " | |
1253 | "are in a line is %s.\n"), | |
920d2a44 AC |
1254 | value); |
1255 | } | |
eb0d3137 | 1256 | |
c906108c SS |
1257 | /* Current count of lines printed on this page, chars on this line. */ |
1258 | static unsigned int lines_printed, chars_printed; | |
1259 | ||
eb6af809 TT |
1260 | /* True if pagination is disabled for just one command. */ |
1261 | ||
1262 | static bool pagination_disabled_for_command; | |
1263 | ||
c906108c SS |
1264 | /* Buffer and start column of buffered text, for doing smarter word- |
1265 | wrapping. When someone calls wrap_here(), we start buffering output | |
1266 | that comes through fputs_filtered(). If we see a newline, we just | |
1267 | spit it out and forget about the wrap_here(). If we see another | |
1268 | wrap_here(), we spit it out and remember the newer one. If we see | |
1269 | the end of the line, we spit out a newline, the indent, and then | |
1270 | the buffered output. */ | |
1271 | ||
c5603d50 | 1272 | static bool filter_initialized = false; |
c906108c | 1273 | |
c5603d50 TT |
1274 | /* Contains characters which are waiting to be output (they have |
1275 | already been counted in chars_printed). */ | |
1276 | static std::string wrap_buffer; | |
c906108c SS |
1277 | |
1278 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1279 | is non-zero. */ | |
d2c0eef4 | 1280 | static const char *wrap_indent; |
c906108c SS |
1281 | |
1282 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1283 | is not in effect. */ | |
1284 | static int wrap_column; | |
c906108c | 1285 | \f |
c5aa993b | 1286 | |
26c4b26f | 1287 | /* Initialize the number of lines per page and chars per line. */ |
eb0d3137 | 1288 | |
c906108c | 1289 | void |
fba45db2 | 1290 | init_page_info (void) |
c906108c | 1291 | { |
5da1313b JK |
1292 | if (batch_flag) |
1293 | { | |
1294 | lines_per_page = UINT_MAX; | |
1295 | chars_per_line = UINT_MAX; | |
1296 | } | |
1297 | else | |
c906108c | 1298 | #if defined(TUI) |
5ecb1806 | 1299 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1300 | #endif |
1301 | { | |
eb0d3137 | 1302 | int rows, cols; |
c906108c | 1303 | |
ec145965 EZ |
1304 | #if defined(__GO32__) |
1305 | rows = ScreenRows (); | |
1306 | cols = ScreenCols (); | |
1307 | lines_per_page = rows; | |
1308 | chars_per_line = cols; | |
1309 | #else | |
eb0d3137 MK |
1310 | /* Make sure Readline has initialized its terminal settings. */ |
1311 | rl_reset_terminal (NULL); | |
c906108c | 1312 | |
eb0d3137 MK |
1313 | /* Get the screen size from Readline. */ |
1314 | rl_get_screen_size (&rows, &cols); | |
1315 | lines_per_page = rows; | |
1316 | chars_per_line = cols; | |
c906108c | 1317 | |
1a66331e PM |
1318 | /* Readline should have fetched the termcap entry for us. |
1319 | Only try to use tgetnum function if rl_get_screen_size | |
1320 | did not return a useful value. */ | |
a121b7c1 | 1321 | if (((rows <= 0) && (tgetnum ((char *) "li") < 0)) |
e681cf3f EZ |
1322 | /* Also disable paging if inside Emacs. $EMACS was used |
1323 | before Emacs v25.1, $INSIDE_EMACS is used since then. */ | |
1324 | || getenv ("EMACS") || getenv ("INSIDE_EMACS")) | |
eb0d3137 | 1325 | { |
1a66331e PM |
1326 | /* The number of lines per page is not mentioned in the terminal |
1327 | description or EMACS evironment variable is set. This probably | |
1328 | means that paging is not useful, so disable paging. */ | |
eb0d3137 MK |
1329 | lines_per_page = UINT_MAX; |
1330 | } | |
c906108c | 1331 | |
c906108c | 1332 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1333 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1334 | lines_per_page = UINT_MAX; |
eb0d3137 | 1335 | #endif |
ec145965 | 1336 | } |
eb0d3137 | 1337 | |
24b73f8e PP |
1338 | /* We handle SIGWINCH ourselves. */ |
1339 | rl_catch_sigwinch = 0; | |
1340 | ||
eb0d3137 | 1341 | set_screen_size (); |
c5aa993b | 1342 | set_width (); |
c906108c SS |
1343 | } |
1344 | ||
2437fd32 GB |
1345 | /* Return nonzero if filtered printing is initialized. */ |
1346 | int | |
1347 | filtered_printing_initialized (void) | |
1348 | { | |
c5603d50 | 1349 | return filter_initialized; |
2437fd32 GB |
1350 | } |
1351 | ||
b95de2b7 TT |
1352 | set_batch_flag_and_restore_page_info::set_batch_flag_and_restore_page_info () |
1353 | : m_save_lines_per_page (lines_per_page), | |
1354 | m_save_chars_per_line (chars_per_line), | |
1355 | m_save_batch_flag (batch_flag) | |
5da1313b | 1356 | { |
b95de2b7 TT |
1357 | batch_flag = 1; |
1358 | init_page_info (); | |
5da1313b JK |
1359 | } |
1360 | ||
b95de2b7 | 1361 | set_batch_flag_and_restore_page_info::~set_batch_flag_and_restore_page_info () |
5da1313b | 1362 | { |
b95de2b7 TT |
1363 | batch_flag = m_save_batch_flag; |
1364 | chars_per_line = m_save_chars_per_line; | |
1365 | lines_per_page = m_save_lines_per_page; | |
5da1313b | 1366 | |
b95de2b7 TT |
1367 | set_screen_size (); |
1368 | set_width (); | |
5da1313b JK |
1369 | } |
1370 | ||
eb0d3137 MK |
1371 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1372 | ||
1373 | static void | |
1374 | set_screen_size (void) | |
1375 | { | |
1376 | int rows = lines_per_page; | |
1377 | int cols = chars_per_line; | |
1378 | ||
1379 | if (rows <= 0) | |
1380 | rows = INT_MAX; | |
1381 | ||
1382 | if (cols <= 0) | |
0caa462c | 1383 | cols = INT_MAX; |
eb0d3137 MK |
1384 | |
1385 | /* Update Readline's idea of the terminal size. */ | |
1386 | rl_set_screen_size (rows, cols); | |
1387 | } | |
1388 | ||
c5603d50 | 1389 | /* Reinitialize WRAP_BUFFER. */ |
eb0d3137 | 1390 | |
c906108c | 1391 | static void |
fba45db2 | 1392 | set_width (void) |
c906108c SS |
1393 | { |
1394 | if (chars_per_line == 0) | |
c5aa993b | 1395 | init_page_info (); |
c906108c | 1396 | |
c5603d50 TT |
1397 | wrap_buffer.clear (); |
1398 | filter_initialized = true; | |
c906108c SS |
1399 | } |
1400 | ||
c5aa993b | 1401 | static void |
eb4c3f4a | 1402 | set_width_command (const char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1403 | { |
eb0d3137 | 1404 | set_screen_size (); |
c906108c SS |
1405 | set_width (); |
1406 | } | |
1407 | ||
eb0d3137 | 1408 | static void |
eb4c3f4a | 1409 | set_height_command (const char *args, int from_tty, struct cmd_list_element *c) |
eb0d3137 MK |
1410 | { |
1411 | set_screen_size (); | |
1412 | } | |
1413 | ||
d6e5e7f7 PP |
1414 | /* See utils.h. */ |
1415 | ||
1416 | void | |
1417 | set_screen_width_and_height (int width, int height) | |
1418 | { | |
1419 | lines_per_page = height; | |
1420 | chars_per_line = width; | |
1421 | ||
1422 | set_screen_size (); | |
1423 | set_width (); | |
1424 | } | |
1425 | ||
cbe56571 TT |
1426 | /* The currently applied style. */ |
1427 | ||
1428 | static ui_file_style applied_style; | |
1429 | ||
1430 | /* The currently desired style. This can differ from the applied | |
1431 | style when showing the pagination prompt. */ | |
1432 | ||
1433 | static ui_file_style desired_style; | |
1434 | ||
1435 | /* Emit an ANSI style escape for STYLE to the wrap buffer. */ | |
1436 | ||
1437 | static void | |
1438 | emit_style_escape (const ui_file_style &style) | |
1439 | { | |
1440 | if (applied_style == style) | |
1441 | return; | |
1442 | applied_style = style; | |
1443 | ||
1444 | wrap_buffer.append (style.to_ansi ()); | |
1445 | } | |
1446 | ||
62f29fda | 1447 | /* See utils.h. */ |
cbe56571 | 1448 | |
62f29fda | 1449 | bool |
ef1dfa36 | 1450 | can_emit_style_escape (struct ui_file *stream) |
cbe56571 TT |
1451 | { |
1452 | if (stream != gdb_stdout | |
1453 | || !cli_styling | |
cbe56571 | 1454 | || !ui_file_isatty (stream)) |
ef1dfa36 | 1455 | return false; |
cbe56571 TT |
1456 | const char *term = getenv ("TERM"); |
1457 | if (term == nullptr || !strcmp (term, "dumb")) | |
ef1dfa36 TT |
1458 | return false; |
1459 | return true; | |
1460 | } | |
1461 | ||
1462 | /* Set the current output style. This will affect future uses of the | |
1463 | _filtered output functions. */ | |
1464 | ||
1465 | static void | |
1466 | set_output_style (struct ui_file *stream, const ui_file_style &style) | |
1467 | { | |
1468 | if (!can_emit_style_escape (stream) | |
1469 | || style == desired_style) | |
cbe56571 TT |
1470 | return; |
1471 | ||
1472 | desired_style = style; | |
1473 | emit_style_escape (style); | |
1474 | } | |
1475 | ||
ef1dfa36 TT |
1476 | /* See utils.h. */ |
1477 | ||
1478 | void | |
1479 | reset_terminal_style (struct ui_file *stream) | |
1480 | { | |
1481 | if (can_emit_style_escape (stream)) | |
1482 | { | |
1483 | /* Force the setting, regardless of what we think the setting | |
1484 | might already be. */ | |
1485 | desired_style = ui_file_style (); | |
1486 | applied_style = desired_style; | |
1487 | wrap_buffer.append (desired_style.to_ansi ()); | |
1488 | } | |
1489 | } | |
1490 | ||
c906108c | 1491 | /* Wait, so the user can read what's on the screen. Prompt the user |
720d2e96 PA |
1492 | to continue by pressing RETURN. 'q' is also provided because |
1493 | telling users what to do in the prompt is more user-friendly than | |
1494 | expecting them to think of Ctrl-C/SIGINT. */ | |
c906108c SS |
1495 | |
1496 | static void | |
fba45db2 | 1497 | prompt_for_continue (void) |
c906108c | 1498 | { |
c906108c | 1499 | char cont_prompt[120]; |
260c0b2a DE |
1500 | /* Used to add duration we waited for user to respond to |
1501 | prompt_for_continue_wait_time. */ | |
dcb07cfa PA |
1502 | using namespace std::chrono; |
1503 | steady_clock::time_point prompt_started = steady_clock::now (); | |
eb6af809 | 1504 | bool disable_pagination = pagination_disabled_for_command; |
c906108c | 1505 | |
cbe56571 TT |
1506 | /* Clear the current styling. */ |
1507 | emit_style_escape (ui_file_style ()); | |
1508 | ||
c906108c | 1509 | if (annotation_level > 1) |
a3f17187 | 1510 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
c906108c SS |
1511 | |
1512 | strcpy (cont_prompt, | |
eb6af809 TT |
1513 | "--Type <RET> for more, q to quit, " |
1514 | "c to continue without paging--"); | |
c906108c SS |
1515 | if (annotation_level > 1) |
1516 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1517 | ||
720d2e96 PA |
1518 | /* We must do this *before* we call gdb_readline_wrapper, else it |
1519 | will eventually call us -- thinking that we're trying to print | |
1520 | beyond the end of the screen. */ | |
c906108c SS |
1521 | reinitialize_more_filter (); |
1522 | ||
223ffa71 | 1523 | scoped_input_handler prepare_input; |
82584158 | 1524 | |
720d2e96 PA |
1525 | /* Call gdb_readline_wrapper, not readline, in order to keep an |
1526 | event loop running. */ | |
5aa89276 | 1527 | gdb::unique_xmalloc_ptr<char> ignore (gdb_readline_wrapper (cont_prompt)); |
c906108c | 1528 | |
260c0b2a | 1529 | /* Add time spend in this routine to prompt_for_continue_wait_time. */ |
dcb07cfa | 1530 | prompt_for_continue_wait_time += steady_clock::now () - prompt_started; |
260c0b2a | 1531 | |
c906108c | 1532 | if (annotation_level > 1) |
a3f17187 | 1533 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
c906108c | 1534 | |
80dbc9fd | 1535 | if (ignore != NULL) |
c906108c | 1536 | { |
5aa89276 | 1537 | char *p = ignore.get (); |
5d502164 | 1538 | |
c906108c SS |
1539 | while (*p == ' ' || *p == '\t') |
1540 | ++p; | |
1541 | if (p[0] == 'q') | |
1690b616 SL |
1542 | /* Do not call quit here; there is no possibility of SIGINT. */ |
1543 | throw_quit ("Quit"); | |
eb6af809 TT |
1544 | if (p[0] == 'c') |
1545 | disable_pagination = true; | |
c906108c | 1546 | } |
c906108c SS |
1547 | |
1548 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1549 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1550 | reinitialize_more_filter (); | |
eb6af809 | 1551 | pagination_disabled_for_command = disable_pagination; |
c906108c | 1552 | |
cbe56571 TT |
1553 | /* Restore the current styling. */ |
1554 | emit_style_escape (desired_style); | |
1555 | ||
581e13c1 | 1556 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
c906108c SS |
1557 | } |
1558 | ||
26c4b26f | 1559 | /* Initialize timer to keep track of how long we waited for the user. */ |
bd712aed DE |
1560 | |
1561 | void | |
1562 | reset_prompt_for_continue_wait_time (void) | |
1563 | { | |
dcb07cfa | 1564 | using namespace std::chrono; |
bd712aed | 1565 | |
dcb07cfa | 1566 | prompt_for_continue_wait_time = steady_clock::duration::zero (); |
bd712aed DE |
1567 | } |
1568 | ||
1569 | /* Fetch the cumulative time spent in prompt_for_continue. */ | |
1570 | ||
dcb07cfa PA |
1571 | std::chrono::steady_clock::duration |
1572 | get_prompt_for_continue_wait_time () | |
bd712aed DE |
1573 | { |
1574 | return prompt_for_continue_wait_time; | |
1575 | } | |
1576 | ||
c906108c SS |
1577 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
1578 | ||
1579 | void | |
fba45db2 | 1580 | reinitialize_more_filter (void) |
c906108c SS |
1581 | { |
1582 | lines_printed = 0; | |
1583 | chars_printed = 0; | |
eb6af809 | 1584 | pagination_disabled_for_command = false; |
c906108c SS |
1585 | } |
1586 | ||
c5603d50 TT |
1587 | /* Flush the wrap buffer to STREAM, if necessary. */ |
1588 | ||
1589 | static void | |
1590 | flush_wrap_buffer (struct ui_file *stream) | |
1591 | { | |
1592 | if (!wrap_buffer.empty ()) | |
1593 | { | |
1594 | fputs_unfiltered (wrap_buffer.c_str (), stream); | |
1595 | wrap_buffer.clear (); | |
1596 | } | |
1597 | } | |
1598 | ||
c906108c | 1599 | /* Indicate that if the next sequence of characters overflows the line, |
581e13c1 | 1600 | a newline should be inserted here rather than when it hits the end. |
c906108c SS |
1601 | If INDENT is non-null, it is a string to be printed to indent the |
1602 | wrapped part on the next line. INDENT must remain accessible until | |
1603 | the next call to wrap_here() or until a newline is printed through | |
1604 | fputs_filtered(). | |
1605 | ||
1606 | If the line is already overfull, we immediately print a newline and | |
1607 | the indentation, and disable further wrapping. | |
1608 | ||
1609 | If we don't know the width of lines, but we know the page height, | |
1610 | we must not wrap words, but should still keep track of newlines | |
1611 | that were explicitly printed. | |
1612 | ||
1613 | INDENT should not contain tabs, as that will mess up the char count | |
1614 | on the next line. FIXME. | |
1615 | ||
1616 | This routine is guaranteed to force out any output which has been | |
1617 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1618 | used to force out output from the wrap_buffer. */ | |
1619 | ||
1620 | void | |
d2c0eef4 | 1621 | wrap_here (const char *indent) |
c906108c | 1622 | { |
581e13c1 | 1623 | /* This should have been allocated, but be paranoid anyway. */ |
c5603d50 | 1624 | if (!filter_initialized) |
3e43a32a MS |
1625 | internal_error (__FILE__, __LINE__, |
1626 | _("failed internal consistency check")); | |
c906108c | 1627 | |
c5603d50 | 1628 | flush_wrap_buffer (gdb_stdout); |
3e43a32a | 1629 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
c906108c SS |
1630 | { |
1631 | wrap_column = 0; | |
1632 | } | |
1633 | else if (chars_printed >= chars_per_line) | |
1634 | { | |
1635 | puts_filtered ("\n"); | |
1636 | if (indent != NULL) | |
1637 | puts_filtered (indent); | |
1638 | wrap_column = 0; | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | wrap_column = chars_printed; | |
1643 | if (indent == NULL) | |
1644 | wrap_indent = ""; | |
1645 | else | |
1646 | wrap_indent = indent; | |
1647 | } | |
1648 | } | |
1649 | ||
4a351cef | 1650 | /* Print input string to gdb_stdout, filtered, with wrap, |
581e13c1 | 1651 | arranging strings in columns of n chars. String can be |
4a351cef AF |
1652 | right or left justified in the column. Never prints |
1653 | trailing spaces. String should never be longer than | |
1654 | width. FIXME: this could be useful for the EXAMINE | |
581e13c1 | 1655 | command, which currently doesn't tabulate very well. */ |
4a351cef AF |
1656 | |
1657 | void | |
1658 | puts_filtered_tabular (char *string, int width, int right) | |
1659 | { | |
1660 | int spaces = 0; | |
1661 | int stringlen; | |
1662 | char *spacebuf; | |
1663 | ||
1664 | gdb_assert (chars_per_line > 0); | |
1665 | if (chars_per_line == UINT_MAX) | |
1666 | { | |
1667 | fputs_filtered (string, gdb_stdout); | |
1668 | fputs_filtered ("\n", gdb_stdout); | |
1669 | return; | |
1670 | } | |
1671 | ||
1672 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1673 | fputs_filtered ("\n", gdb_stdout); | |
1674 | ||
1675 | if (width >= chars_per_line) | |
1676 | width = chars_per_line - 1; | |
1677 | ||
1678 | stringlen = strlen (string); | |
1679 | ||
1680 | if (chars_printed > 0) | |
1681 | spaces = width - (chars_printed - 1) % width - 1; | |
1682 | if (right) | |
1683 | spaces += width - stringlen; | |
1684 | ||
224c3ddb | 1685 | spacebuf = (char *) alloca (spaces + 1); |
4a351cef AF |
1686 | spacebuf[spaces] = '\0'; |
1687 | while (spaces--) | |
1688 | spacebuf[spaces] = ' '; | |
1689 | ||
1690 | fputs_filtered (spacebuf, gdb_stdout); | |
1691 | fputs_filtered (string, gdb_stdout); | |
1692 | } | |
1693 | ||
1694 | ||
c906108c | 1695 | /* Ensure that whatever gets printed next, using the filtered output |
581e13c1 | 1696 | commands, starts at the beginning of the line. I.e. if there is |
c906108c | 1697 | any pending output for the current line, flush it and start a new |
581e13c1 | 1698 | line. Otherwise do nothing. */ |
c906108c SS |
1699 | |
1700 | void | |
fba45db2 | 1701 | begin_line (void) |
c906108c SS |
1702 | { |
1703 | if (chars_printed > 0) | |
1704 | { | |
1705 | puts_filtered ("\n"); | |
1706 | } | |
1707 | } | |
1708 | ||
ac9a91a7 | 1709 | |
c906108c SS |
1710 | /* Like fputs but if FILTER is true, pause after every screenful. |
1711 | ||
1712 | Regardless of FILTER can wrap at points other than the final | |
1713 | character of a line. | |
1714 | ||
1715 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1716 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1717 | anything. | |
1718 | ||
1719 | Note that a longjmp to top level may occur in this routine (only if | |
1720 | FILTER is true) (since prompt_for_continue may do so) so this | |
1721 | routine should not be called when cleanups are not in place. */ | |
1722 | ||
1723 | static void | |
fba45db2 KB |
1724 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1725 | int filter) | |
c906108c SS |
1726 | { |
1727 | const char *lineptr; | |
1728 | ||
1729 | if (linebuffer == 0) | |
1730 | return; | |
1731 | ||
1732 | /* Don't do any filtering if it is disabled. */ | |
390a8aca | 1733 | if (stream != gdb_stdout |
b2e7f004 | 1734 | || !pagination_enabled |
eb6af809 | 1735 | || pagination_disabled_for_command |
b2e7f004 | 1736 | || batch_flag |
390a8aca | 1737 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
58dadb1b | 1738 | || top_level_interpreter () == NULL |
29f94340 | 1739 | || top_level_interpreter ()->interp_ui_out ()->is_mi_like_p ()) |
c906108c | 1740 | { |
c5603d50 | 1741 | flush_wrap_buffer (stream); |
c906108c SS |
1742 | fputs_unfiltered (linebuffer, stream); |
1743 | return; | |
1744 | } | |
1745 | ||
1746 | /* Go through and output each character. Show line extension | |
1747 | when this is necessary; prompt user for new page when this is | |
1748 | necessary. */ | |
c5aa993b | 1749 | |
c906108c SS |
1750 | lineptr = linebuffer; |
1751 | while (*lineptr) | |
1752 | { | |
eb6af809 TT |
1753 | /* Possible new page. Note that PAGINATION_DISABLED_FOR_COMMAND |
1754 | might be set during this loop, so we must continue to check | |
1755 | it here. */ | |
1756 | if (filter && (lines_printed >= lines_per_page - 1) | |
1757 | && !pagination_disabled_for_command) | |
c906108c SS |
1758 | prompt_for_continue (); |
1759 | ||
1760 | while (*lineptr && *lineptr != '\n') | |
1761 | { | |
1762 | /* Print a single line. */ | |
1763 | if (*lineptr == '\t') | |
1764 | { | |
c5603d50 | 1765 | wrap_buffer.push_back ('\t'); |
c906108c SS |
1766 | /* Shifting right by 3 produces the number of tab stops |
1767 | we have already passed, and then adding one and | |
c5aa993b | 1768 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1769 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1770 | lineptr++; | |
1771 | } | |
1772 | else | |
1773 | { | |
c5603d50 | 1774 | wrap_buffer.push_back (*lineptr); |
c906108c SS |
1775 | chars_printed++; |
1776 | lineptr++; | |
1777 | } | |
c5aa993b | 1778 | |
c906108c SS |
1779 | if (chars_printed >= chars_per_line) |
1780 | { | |
1781 | unsigned int save_chars = chars_printed; | |
1782 | ||
1783 | chars_printed = 0; | |
1784 | lines_printed++; | |
1785 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1786 | if chars_per_line is right, we probably just overflowed |
1787 | anyway; if it's wrong, let us keep going. */ | |
c906108c | 1788 | if (wrap_column) |
cbe56571 TT |
1789 | { |
1790 | emit_style_escape (ui_file_style ()); | |
1791 | flush_wrap_buffer (stream); | |
1792 | fputc_unfiltered ('\n', stream); | |
1793 | } | |
c906108c | 1794 | |
eb6af809 TT |
1795 | /* Possible new page. Note that |
1796 | PAGINATION_DISABLED_FOR_COMMAND might be set during | |
1797 | this loop, so we must continue to check it here. */ | |
1798 | if (lines_printed >= lines_per_page - 1 | |
1799 | && !pagination_disabled_for_command) | |
c906108c SS |
1800 | prompt_for_continue (); |
1801 | ||
581e13c1 | 1802 | /* Now output indentation and wrapped string. */ |
c906108c SS |
1803 | if (wrap_column) |
1804 | { | |
1805 | fputs_unfiltered (wrap_indent, stream); | |
cbe56571 | 1806 | emit_style_escape (desired_style); |
c5603d50 | 1807 | flush_wrap_buffer (stream); |
c906108c SS |
1808 | /* FIXME, this strlen is what prevents wrap_indent from |
1809 | containing tabs. However, if we recurse to print it | |
1810 | and count its chars, we risk trouble if wrap_indent is | |
581e13c1 | 1811 | longer than (the user settable) chars_per_line. |
c906108c SS |
1812 | Note also that this can set chars_printed > chars_per_line |
1813 | if we are printing a long string. */ | |
1814 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1815 | + (save_chars - wrap_column); |
c5aa993b JM |
1816 | wrap_column = 0; /* And disable fancy wrap */ |
1817 | } | |
c906108c SS |
1818 | } |
1819 | } | |
1820 | ||
1821 | if (*lineptr == '\n') | |
1822 | { | |
1823 | chars_printed = 0; | |
3e43a32a MS |
1824 | wrap_here ((char *) 0); /* Spit out chars, cancel |
1825 | further wraps. */ | |
c906108c SS |
1826 | lines_printed++; |
1827 | fputc_unfiltered ('\n', stream); | |
1828 | lineptr++; | |
1829 | } | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | void | |
fba45db2 | 1834 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1835 | { |
1836 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1837 | } | |
1838 | ||
cbe56571 TT |
1839 | /* See utils.h. */ |
1840 | ||
1841 | void | |
1842 | fputs_styled (const char *linebuffer, const ui_file_style &style, | |
1843 | struct ui_file *stream) | |
1844 | { | |
1845 | set_output_style (stream, style); | |
1846 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1847 | set_output_style (stream, ui_file_style ()); | |
1848 | } | |
1849 | ||
c906108c | 1850 | int |
fba45db2 | 1851 | putchar_unfiltered (int c) |
c906108c | 1852 | { |
11cf8741 | 1853 | char buf = c; |
e0627e85 | 1854 | |
d9fcf2fb | 1855 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1856 | return c; |
1857 | } | |
1858 | ||
d1f4cff8 AC |
1859 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1860 | May return nonlocally. */ | |
1861 | ||
1862 | int | |
1863 | putchar_filtered (int c) | |
1864 | { | |
1865 | return fputc_filtered (c, gdb_stdout); | |
1866 | } | |
1867 | ||
c906108c | 1868 | int |
fba45db2 | 1869 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 1870 | { |
11cf8741 | 1871 | char buf = c; |
e0627e85 | 1872 | |
d9fcf2fb | 1873 | ui_file_write (stream, &buf, 1); |
c906108c SS |
1874 | return c; |
1875 | } | |
1876 | ||
1877 | int | |
fba45db2 | 1878 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
1879 | { |
1880 | char buf[2]; | |
1881 | ||
1882 | buf[0] = c; | |
1883 | buf[1] = 0; | |
1884 | fputs_filtered (buf, stream); | |
1885 | return c; | |
1886 | } | |
1887 | ||
1888 | /* puts_debug is like fputs_unfiltered, except it prints special | |
1889 | characters in printable fashion. */ | |
1890 | ||
1891 | void | |
fba45db2 | 1892 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
1893 | { |
1894 | int ch; | |
1895 | ||
1896 | /* Print prefix and suffix after each line. */ | |
1897 | static int new_line = 1; | |
1898 | static int return_p = 0; | |
a121b7c1 PA |
1899 | static const char *prev_prefix = ""; |
1900 | static const char *prev_suffix = ""; | |
c906108c SS |
1901 | |
1902 | if (*string == '\n') | |
1903 | return_p = 0; | |
1904 | ||
1905 | /* If the prefix is changing, print the previous suffix, a new line, | |
1906 | and the new prefix. */ | |
c5aa993b | 1907 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 1908 | { |
9846de1b JM |
1909 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
1910 | fputs_unfiltered ("\n", gdb_stdlog); | |
1911 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
1912 | } |
1913 | ||
1914 | /* Print prefix if we printed a newline during the previous call. */ | |
1915 | if (new_line) | |
1916 | { | |
1917 | new_line = 0; | |
9846de1b | 1918 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
1919 | } |
1920 | ||
1921 | prev_prefix = prefix; | |
1922 | prev_suffix = suffix; | |
1923 | ||
1924 | /* Output characters in a printable format. */ | |
1925 | while ((ch = *string++) != '\0') | |
1926 | { | |
1927 | switch (ch) | |
c5aa993b | 1928 | { |
c906108c SS |
1929 | default: |
1930 | if (isprint (ch)) | |
9846de1b | 1931 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
1932 | |
1933 | else | |
9846de1b | 1934 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
1935 | break; |
1936 | ||
c5aa993b JM |
1937 | case '\\': |
1938 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
1939 | break; | |
1940 | case '\b': | |
1941 | fputs_unfiltered ("\\b", gdb_stdlog); | |
1942 | break; | |
1943 | case '\f': | |
1944 | fputs_unfiltered ("\\f", gdb_stdlog); | |
1945 | break; | |
1946 | case '\n': | |
1947 | new_line = 1; | |
1948 | fputs_unfiltered ("\\n", gdb_stdlog); | |
1949 | break; | |
1950 | case '\r': | |
1951 | fputs_unfiltered ("\\r", gdb_stdlog); | |
1952 | break; | |
1953 | case '\t': | |
1954 | fputs_unfiltered ("\\t", gdb_stdlog); | |
1955 | break; | |
1956 | case '\v': | |
1957 | fputs_unfiltered ("\\v", gdb_stdlog); | |
1958 | break; | |
1959 | } | |
c906108c SS |
1960 | |
1961 | return_p = ch == '\r'; | |
1962 | } | |
1963 | ||
1964 | /* Print suffix if we printed a newline. */ | |
1965 | if (new_line) | |
1966 | { | |
9846de1b JM |
1967 | fputs_unfiltered (suffix, gdb_stdlog); |
1968 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
1969 | } |
1970 | } | |
1971 | ||
1972 | ||
1973 | /* Print a variable number of ARGS using format FORMAT. If this | |
1974 | information is going to put the amount written (since the last call | |
1975 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
1976 | call prompt_for_continue to get the users permision to continue. | |
1977 | ||
1978 | Unlike fprintf, this function does not return a value. | |
1979 | ||
1980 | We implement three variants, vfprintf (takes a vararg list and stream), | |
1981 | fprintf (takes a stream to write on), and printf (the usual). | |
1982 | ||
1983 | Note also that a longjmp to top level may occur in this routine | |
1984 | (since prompt_for_continue may do so) so this routine should not be | |
1985 | called when cleanups are not in place. */ | |
1986 | ||
1987 | static void | |
fba45db2 KB |
1988 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
1989 | va_list args, int filter) | |
c906108c | 1990 | { |
200aa7b1 TT |
1991 | std::string linebuffer = string_vprintf (format, args); |
1992 | fputs_maybe_filtered (linebuffer.c_str (), stream, filter); | |
c906108c SS |
1993 | } |
1994 | ||
1995 | ||
1996 | void | |
fba45db2 | 1997 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
1998 | { |
1999 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2000 | } | |
2001 | ||
2002 | void | |
fba45db2 | 2003 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c | 2004 | { |
200aa7b1 | 2005 | std::string linebuffer = string_vprintf (format, args); |
75feb17d DJ |
2006 | if (debug_timestamp && stream == gdb_stdlog) |
2007 | { | |
dcb07cfa | 2008 | using namespace std::chrono; |
6e5abd65 | 2009 | int len, need_nl; |
75feb17d | 2010 | |
dcb07cfa PA |
2011 | steady_clock::time_point now = steady_clock::now (); |
2012 | seconds s = duration_cast<seconds> (now.time_since_epoch ()); | |
2013 | microseconds us = duration_cast<microseconds> (now.time_since_epoch () - s); | |
6e5abd65 | 2014 | |
200aa7b1 | 2015 | len = linebuffer.size (); |
6e5abd65 PA |
2016 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); |
2017 | ||
dcb07cfa PA |
2018 | std::string timestamp = string_printf ("%ld.%06ld %s%s", |
2019 | (long) s.count (), | |
2020 | (long) us.count (), | |
200aa7b1 TT |
2021 | linebuffer.c_str (), |
2022 | need_nl ? "\n": ""); | |
dcb07cfa | 2023 | fputs_unfiltered (timestamp.c_str (), stream); |
75feb17d | 2024 | } |
6e5abd65 | 2025 | else |
200aa7b1 | 2026 | fputs_unfiltered (linebuffer.c_str (), stream); |
c906108c SS |
2027 | } |
2028 | ||
2029 | void | |
fba45db2 | 2030 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2031 | { |
2032 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2033 | } | |
2034 | ||
2035 | void | |
fba45db2 | 2036 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2037 | { |
2038 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2039 | } | |
2040 | ||
c906108c | 2041 | void |
8731e58e | 2042 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2043 | { |
2044 | va_list args; | |
e0627e85 | 2045 | |
c906108c | 2046 | va_start (args, format); |
c906108c SS |
2047 | vfprintf_filtered (stream, format, args); |
2048 | va_end (args); | |
2049 | } | |
2050 | ||
c906108c | 2051 | void |
8731e58e | 2052 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2053 | { |
2054 | va_list args; | |
e0627e85 | 2055 | |
c906108c | 2056 | va_start (args, format); |
c906108c SS |
2057 | vfprintf_unfiltered (stream, format, args); |
2058 | va_end (args); | |
2059 | } | |
2060 | ||
2061 | /* Like fprintf_filtered, but prints its result indented. | |
2062 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2063 | ||
c906108c | 2064 | void |
8731e58e AC |
2065 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2066 | ...) | |
c906108c SS |
2067 | { |
2068 | va_list args; | |
e0627e85 | 2069 | |
c906108c | 2070 | va_start (args, format); |
c906108c SS |
2071 | print_spaces_filtered (spaces, stream); |
2072 | ||
2073 | vfprintf_filtered (stream, format, args); | |
2074 | va_end (args); | |
2075 | } | |
2076 | ||
cbe56571 TT |
2077 | /* See utils.h. */ |
2078 | ||
2079 | void | |
2080 | fprintf_styled (struct ui_file *stream, const ui_file_style &style, | |
2081 | const char *format, ...) | |
2082 | { | |
2083 | va_list args; | |
2084 | ||
2085 | set_output_style (stream, style); | |
2086 | va_start (args, format); | |
2087 | vfprintf_filtered (stream, format, args); | |
2088 | va_end (args); | |
2089 | set_output_style (stream, ui_file_style ()); | |
2090 | } | |
2091 | ||
c906108c | 2092 | |
c906108c | 2093 | void |
8731e58e | 2094 | printf_filtered (const char *format, ...) |
c906108c SS |
2095 | { |
2096 | va_list args; | |
e0627e85 | 2097 | |
c906108c | 2098 | va_start (args, format); |
c906108c SS |
2099 | vfprintf_filtered (gdb_stdout, format, args); |
2100 | va_end (args); | |
2101 | } | |
2102 | ||
2103 | ||
c906108c | 2104 | void |
8731e58e | 2105 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2106 | { |
2107 | va_list args; | |
e0627e85 | 2108 | |
c906108c | 2109 | va_start (args, format); |
c906108c SS |
2110 | vfprintf_unfiltered (gdb_stdout, format, args); |
2111 | va_end (args); | |
2112 | } | |
2113 | ||
2114 | /* Like printf_filtered, but prints it's result indented. | |
2115 | Called as printfi_filtered (spaces, format, ...); */ | |
2116 | ||
c906108c | 2117 | void |
8731e58e | 2118 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2119 | { |
2120 | va_list args; | |
e0627e85 | 2121 | |
c906108c | 2122 | va_start (args, format); |
c906108c SS |
2123 | print_spaces_filtered (spaces, gdb_stdout); |
2124 | vfprintf_filtered (gdb_stdout, format, args); | |
2125 | va_end (args); | |
2126 | } | |
2127 | ||
2128 | /* Easy -- but watch out! | |
2129 | ||
2130 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2131 | This one doesn't, and had better not! */ | |
2132 | ||
2133 | void | |
fba45db2 | 2134 | puts_filtered (const char *string) |
c906108c SS |
2135 | { |
2136 | fputs_filtered (string, gdb_stdout); | |
2137 | } | |
2138 | ||
2139 | void | |
fba45db2 | 2140 | puts_unfiltered (const char *string) |
c906108c SS |
2141 | { |
2142 | fputs_unfiltered (string, gdb_stdout); | |
2143 | } | |
2144 | ||
2145 | /* Return a pointer to N spaces and a null. The pointer is good | |
2146 | until the next call to here. */ | |
2147 | char * | |
fba45db2 | 2148 | n_spaces (int n) |
c906108c | 2149 | { |
392a587b JM |
2150 | char *t; |
2151 | static char *spaces = 0; | |
2152 | static int max_spaces = -1; | |
c906108c SS |
2153 | |
2154 | if (n > max_spaces) | |
2155 | { | |
2156 | if (spaces) | |
b8c9b27d | 2157 | xfree (spaces); |
c5aa993b JM |
2158 | spaces = (char *) xmalloc (n + 1); |
2159 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2160 | *--t = ' '; |
2161 | spaces[n] = '\0'; | |
2162 | max_spaces = n; | |
2163 | } | |
2164 | ||
2165 | return spaces + max_spaces - n; | |
2166 | } | |
2167 | ||
2168 | /* Print N spaces. */ | |
2169 | void | |
fba45db2 | 2170 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2171 | { |
2172 | fputs_filtered (n_spaces (n), stream); | |
2173 | } | |
2174 | \f | |
4a351cef | 2175 | /* C++/ObjC demangler stuff. */ |
c906108c | 2176 | |
389e51db AC |
2177 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2178 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2179 | If the name is not mangled, or the language for the name is unknown, or | |
581e13c1 | 2180 | demangling is off, the name is printed in its "raw" form. */ |
c906108c SS |
2181 | |
2182 | void | |
0d5cff50 | 2183 | fprintf_symbol_filtered (struct ui_file *stream, const char *name, |
8731e58e | 2184 | enum language lang, int arg_mode) |
c906108c SS |
2185 | { |
2186 | char *demangled; | |
2187 | ||
2188 | if (name != NULL) | |
2189 | { | |
2190 | /* If user wants to see raw output, no problem. */ | |
2191 | if (!demangle) | |
2192 | { | |
2193 | fputs_filtered (name, stream); | |
2194 | } | |
2195 | else | |
2196 | { | |
9a3d7dfd | 2197 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2198 | fputs_filtered (demangled ? demangled : name, stream); |
2199 | if (demangled != NULL) | |
2200 | { | |
b8c9b27d | 2201 | xfree (demangled); |
c906108c SS |
2202 | } |
2203 | } | |
2204 | } | |
2205 | } | |
2206 | ||
0662b6a7 PA |
2207 | /* True if CH is a character that can be part of a symbol name. I.e., |
2208 | either a number, a letter, or a '_'. */ | |
2209 | ||
2210 | static bool | |
2211 | valid_identifier_name_char (int ch) | |
2212 | { | |
2213 | return (isalnum (ch) || ch == '_'); | |
2214 | } | |
2215 | ||
2216 | /* Skip to end of token, or to END, whatever comes first. Input is | |
2217 | assumed to be a C++ operator name. */ | |
2218 | ||
2219 | static const char * | |
2220 | cp_skip_operator_token (const char *token, const char *end) | |
2221 | { | |
2222 | const char *p = token; | |
2223 | while (p != end && !isspace (*p) && *p != '(') | |
2224 | { | |
2225 | if (valid_identifier_name_char (*p)) | |
2226 | { | |
2227 | while (p != end && valid_identifier_name_char (*p)) | |
2228 | p++; | |
2229 | return p; | |
2230 | } | |
2231 | else | |
2232 | { | |
2233 | /* Note, ordered such that among ops that share a prefix, | |
2234 | longer comes first. This is so that the loop below can | |
2235 | bail on first match. */ | |
2236 | static const char *ops[] = | |
2237 | { | |
2238 | "[", | |
2239 | "]", | |
2240 | "~", | |
2241 | ",", | |
2242 | "-=", "--", "->", "-", | |
2243 | "+=", "++", "+", | |
2244 | "*=", "*", | |
2245 | "/=", "/", | |
2246 | "%=", "%", | |
2247 | "|=", "||", "|", | |
2248 | "&=", "&&", "&", | |
2249 | "^=", "^", | |
2250 | "!=", "!", | |
2251 | "<<=", "<=", "<<", "<", | |
2252 | ">>=", ">=", ">>", ">", | |
2253 | "==", "=", | |
2254 | }; | |
2255 | ||
2256 | for (const char *op : ops) | |
2257 | { | |
2258 | size_t oplen = strlen (op); | |
2259 | size_t lencmp = std::min<size_t> (oplen, end - p); | |
2260 | ||
2261 | if (strncmp (p, op, lencmp) == 0) | |
2262 | return p + lencmp; | |
2263 | } | |
2264 | /* Some unidentified character. Return it. */ | |
2265 | return p + 1; | |
2266 | } | |
2267 | } | |
2268 | ||
2269 | return p; | |
2270 | } | |
2271 | ||
2272 | /* Advance STRING1/STRING2 past whitespace. */ | |
2273 | ||
2274 | static void | |
2275 | skip_ws (const char *&string1, const char *&string2, const char *end_str2) | |
2276 | { | |
2277 | while (isspace (*string1)) | |
2278 | string1++; | |
2279 | while (string2 < end_str2 && isspace (*string2)) | |
2280 | string2++; | |
2281 | } | |
2282 | ||
2283 | /* True if STRING points at the start of a C++ operator name. START | |
2284 | is the start of the string that STRING points to, hence when | |
2285 | reading backwards, we must not read any character before START. */ | |
2286 | ||
2287 | static bool | |
2288 | cp_is_operator (const char *string, const char *start) | |
2289 | { | |
2290 | return ((string == start | |
2291 | || !valid_identifier_name_char (string[-1])) | |
2292 | && strncmp (string, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0 | |
2293 | && !valid_identifier_name_char (string[CP_OPERATOR_LEN])); | |
2294 | } | |
2295 | ||
bd69330d PA |
2296 | /* If *NAME points at an ABI tag, skip it and return true. Otherwise |
2297 | leave *NAME unmodified and return false. (see GCC's abi_tag | |
2298 | attribute), such names are demangled as e.g., | |
2299 | "function[abi:cxx11]()". */ | |
2300 | ||
2301 | static bool | |
2302 | skip_abi_tag (const char **name) | |
2303 | { | |
2304 | const char *p = *name; | |
2305 | ||
2306 | if (startswith (p, "[abi:")) | |
2307 | { | |
2308 | p += 5; | |
2309 | ||
2310 | while (valid_identifier_name_char (*p)) | |
2311 | p++; | |
2312 | ||
2313 | if (*p == ']') | |
2314 | { | |
2315 | p++; | |
2316 | *name = p; | |
2317 | return true; | |
2318 | } | |
2319 | } | |
2320 | return false; | |
2321 | } | |
2322 | ||
b5ec771e | 2323 | /* See utils.h. */ |
1d550c82 | 2324 | |
b5ec771e | 2325 | int |
1d550c82 | 2326 | strncmp_iw_with_mode (const char *string1, const char *string2, |
0662b6a7 | 2327 | size_t string2_len, strncmp_iw_mode mode, |
bd69330d PA |
2328 | enum language language, |
2329 | completion_match_for_lcd *match_for_lcd) | |
c906108c | 2330 | { |
0662b6a7 | 2331 | const char *string1_start = string1; |
1d550c82 | 2332 | const char *end_str2 = string2 + string2_len; |
0662b6a7 PA |
2333 | bool skip_spaces = true; |
2334 | bool have_colon_op = (language == language_cplus | |
2335 | || language == language_rust | |
2336 | || language == language_fortran); | |
1d550c82 PA |
2337 | |
2338 | while (1) | |
c906108c | 2339 | { |
0662b6a7 PA |
2340 | if (skip_spaces |
2341 | || ((isspace (*string1) && !valid_identifier_name_char (*string2)) | |
2342 | || (isspace (*string2) && !valid_identifier_name_char (*string1)))) | |
2343 | { | |
2344 | skip_ws (string1, string2, end_str2); | |
2345 | skip_spaces = false; | |
2346 | } | |
2347 | ||
bd69330d PA |
2348 | /* Skip [abi:cxx11] tags in the symbol name if the lookup name |
2349 | doesn't include them. E.g.: | |
2350 | ||
2351 | string1: function[abi:cxx1](int) | |
2352 | string2: function | |
2353 | ||
2354 | string1: function[abi:cxx1](int) | |
2355 | string2: function(int) | |
2356 | ||
2357 | string1: Struct[abi:cxx1]::function() | |
2358 | string2: Struct::function() | |
2359 | ||
2360 | string1: function(Struct[abi:cxx1], int) | |
2361 | string2: function(Struct, int) | |
2362 | */ | |
2363 | if (string2 == end_str2 | |
2364 | || (*string2 != '[' && !valid_identifier_name_char (*string2))) | |
2365 | { | |
2366 | const char *abi_start = string1; | |
2367 | ||
2368 | /* There can be more than one tag. */ | |
2369 | while (*string1 == '[' && skip_abi_tag (&string1)) | |
2370 | ; | |
2371 | ||
2372 | if (match_for_lcd != NULL && abi_start != string1) | |
2373 | match_for_lcd->mark_ignored_range (abi_start, string1); | |
2374 | ||
2375 | while (isspace (*string1)) | |
2376 | string1++; | |
2377 | } | |
2378 | ||
1d550c82 PA |
2379 | if (*string1 == '\0' || string2 == end_str2) |
2380 | break; | |
0662b6a7 PA |
2381 | |
2382 | /* Handle the :: operator. */ | |
2383 | if (have_colon_op && string1[0] == ':' && string1[1] == ':') | |
2384 | { | |
2385 | if (*string2 != ':') | |
2386 | return 1; | |
2387 | ||
2388 | string1++; | |
2389 | string2++; | |
2390 | ||
2391 | if (string2 == end_str2) | |
2392 | break; | |
2393 | ||
2394 | if (*string2 != ':') | |
2395 | return 1; | |
2396 | ||
2397 | string1++; | |
2398 | string2++; | |
2399 | ||
2400 | while (isspace (*string1)) | |
2401 | string1++; | |
2402 | while (string2 < end_str2 && isspace (*string2)) | |
2403 | string2++; | |
2404 | continue; | |
2405 | } | |
2406 | ||
2407 | /* Handle C++ user-defined operators. */ | |
2408 | else if (language == language_cplus | |
2409 | && *string1 == 'o') | |
2410 | { | |
2411 | if (cp_is_operator (string1, string1_start)) | |
2412 | { | |
2413 | /* An operator name in STRING1. Check STRING2. */ | |
2414 | size_t cmplen | |
2415 | = std::min<size_t> (CP_OPERATOR_LEN, end_str2 - string2); | |
2416 | if (strncmp (string1, string2, cmplen) != 0) | |
2417 | return 1; | |
2418 | ||
2419 | string1 += cmplen; | |
2420 | string2 += cmplen; | |
2421 | ||
2422 | if (string2 != end_str2) | |
2423 | { | |
2424 | /* Check for "operatorX" in STRING2. */ | |
2425 | if (valid_identifier_name_char (*string2)) | |
2426 | return 1; | |
2427 | ||
2428 | skip_ws (string1, string2, end_str2); | |
2429 | } | |
2430 | ||
2431 | /* Handle operator(). */ | |
2432 | if (*string1 == '(') | |
2433 | { | |
2434 | if (string2 == end_str2) | |
2435 | { | |
2436 | if (mode == strncmp_iw_mode::NORMAL) | |
2437 | return 0; | |
2438 | else | |
2439 | { | |
2440 | /* Don't break for the regular return at the | |
2441 | bottom, because "operator" should not | |
2442 | match "operator()", since this open | |
2443 | parentheses is not the parameter list | |
2444 | start. */ | |
2445 | return *string1 != '\0'; | |
2446 | } | |
2447 | } | |
2448 | ||
2449 | if (*string1 != *string2) | |
2450 | return 1; | |
2451 | ||
2452 | string1++; | |
2453 | string2++; | |
2454 | } | |
2455 | ||
2456 | while (1) | |
2457 | { | |
2458 | skip_ws (string1, string2, end_str2); | |
2459 | ||
2460 | /* Skip to end of token, or to END, whatever comes | |
2461 | first. */ | |
2462 | const char *end_str1 = string1 + strlen (string1); | |
2463 | const char *p1 = cp_skip_operator_token (string1, end_str1); | |
2464 | const char *p2 = cp_skip_operator_token (string2, end_str2); | |
2465 | ||
2466 | cmplen = std::min (p1 - string1, p2 - string2); | |
2467 | if (p2 == end_str2) | |
2468 | { | |
2469 | if (strncmp (string1, string2, cmplen) != 0) | |
2470 | return 1; | |
2471 | } | |
2472 | else | |
2473 | { | |
2474 | if (p1 - string1 != p2 - string2) | |
2475 | return 1; | |
2476 | if (strncmp (string1, string2, cmplen) != 0) | |
2477 | return 1; | |
2478 | } | |
2479 | ||
2480 | string1 += cmplen; | |
2481 | string2 += cmplen; | |
2482 | ||
2483 | if (*string1 == '\0' || string2 == end_str2) | |
2484 | break; | |
2485 | if (*string1 == '(' || *string2 == '(') | |
2486 | break; | |
2487 | } | |
2488 | ||
2489 | continue; | |
2490 | } | |
2491 | } | |
2492 | ||
559a7a62 JK |
2493 | if (case_sensitivity == case_sensitive_on && *string1 != *string2) |
2494 | break; | |
2495 | if (case_sensitivity == case_sensitive_off | |
2496 | && (tolower ((unsigned char) *string1) | |
2497 | != tolower ((unsigned char) *string2))) | |
2498 | break; | |
1d550c82 | 2499 | |
0662b6a7 PA |
2500 | /* If we see any non-whitespace, non-identifier-name character |
2501 | (any of "()<>*&" etc.), then skip spaces the next time | |
2502 | around. */ | |
2503 | if (!isspace (*string1) && !valid_identifier_name_char (*string1)) | |
2504 | skip_spaces = true; | |
2505 | ||
1d550c82 PA |
2506 | string1++; |
2507 | string2++; | |
c906108c | 2508 | } |
1d550c82 PA |
2509 | |
2510 | if (string2 == end_str2) | |
2511 | { | |
2512 | if (mode == strncmp_iw_mode::NORMAL) | |
bd69330d PA |
2513 | { |
2514 | /* Strip abi tag markers from the matched symbol name. | |
2515 | Usually the ABI marker will be found on function name | |
2516 | (automatically added because the function returns an | |
2517 | object marked with an ABI tag). However, it's also | |
2518 | possible to see a marker in one of the function | |
2519 | parameters, for example. | |
2520 | ||
2521 | string2 (lookup name): | |
2522 | func | |
2523 | symbol name: | |
2524 | function(some_struct[abi:cxx11], int) | |
2525 | ||
2526 | and for completion LCD computation we want to say that | |
2527 | the match was for: | |
2528 | function(some_struct, int) | |
2529 | */ | |
2530 | if (match_for_lcd != NULL) | |
2531 | { | |
2532 | while ((string1 = strstr (string1, "[abi:")) != NULL) | |
2533 | { | |
2534 | const char *abi_start = string1; | |
2535 | ||
2536 | /* There can be more than one tag. */ | |
2537 | while (skip_abi_tag (&string1) && *string1 == '[') | |
2538 | ; | |
2539 | ||
2540 | if (abi_start != string1) | |
2541 | match_for_lcd->mark_ignored_range (abi_start, string1); | |
2542 | } | |
2543 | } | |
2544 | ||
2545 | return 0; | |
2546 | } | |
1d550c82 PA |
2547 | else |
2548 | return (*string1 != '\0' && *string1 != '('); | |
2549 | } | |
2550 | else | |
2551 | return 1; | |
2552 | } | |
2553 | ||
2554 | /* See utils.h. */ | |
2555 | ||
2556 | int | |
2557 | strncmp_iw (const char *string1, const char *string2, size_t string2_len) | |
2558 | { | |
2559 | return strncmp_iw_with_mode (string1, string2, string2_len, | |
0662b6a7 | 2560 | strncmp_iw_mode::NORMAL, language_minimal); |
1d550c82 PA |
2561 | } |
2562 | ||
2563 | /* See utils.h. */ | |
2564 | ||
2565 | int | |
2566 | strcmp_iw (const char *string1, const char *string2) | |
2567 | { | |
2568 | return strncmp_iw_with_mode (string1, string2, strlen (string2), | |
0662b6a7 | 2569 | strncmp_iw_mode::MATCH_PARAMS, language_minimal); |
c906108c | 2570 | } |
2de7ced7 | 2571 | |
0fe19209 DC |
2572 | /* This is like strcmp except that it ignores whitespace and treats |
2573 | '(' as the first non-NULL character in terms of ordering. Like | |
2574 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2575 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2576 | according to that ordering. | |
2577 | ||
2578 | If a list is sorted according to this function and if you want to | |
2579 | find names in the list that match some fixed NAME according to | |
2580 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2581 | where this function would put NAME. | |
2582 | ||
559a7a62 JK |
2583 | This function must be neutral to the CASE_SENSITIVITY setting as the user |
2584 | may choose it during later lookup. Therefore this function always sorts | |
2585 | primarily case-insensitively and secondarily case-sensitively. | |
2586 | ||
0fe19209 DC |
2587 | Here are some examples of why using strcmp to sort is a bad idea: |
2588 | ||
2589 | Whitespace example: | |
2590 | ||
2591 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2592 | we try to do a search for "foo<char*>", strcmp will locate this | |
2593 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2594 | will start looking at strings beginning with "goo", and will never | |
2595 | see the correct match of "foo<char *>". | |
2596 | ||
2597 | Parenthesis example: | |
2598 | ||
2599 | In practice, this is less like to be an issue, but I'll give it a | |
2600 | shot. Let's assume that '$' is a legitimate character to occur in | |
2601 | symbols. (Which may well even be the case on some systems.) Then | |
2602 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2603 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2604 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2605 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2606 | "foo") is false, so it won't proceed to the actual match of | |
2607 | "foo(int)" with "foo". */ | |
2608 | ||
2609 | int | |
2610 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2611 | { | |
559a7a62 JK |
2612 | const char *saved_string1 = string1, *saved_string2 = string2; |
2613 | enum case_sensitivity case_pass = case_sensitive_off; | |
2614 | ||
2615 | for (;;) | |
0fe19209 | 2616 | { |
b11b1f88 JK |
2617 | /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'. |
2618 | Provide stub characters if we are already at the end of one of the | |
2619 | strings. */ | |
2620 | char c1 = 'X', c2 = 'X'; | |
2621 | ||
2622 | while (*string1 != '\0' && *string2 != '\0') | |
0fe19209 | 2623 | { |
b11b1f88 JK |
2624 | while (isspace (*string1)) |
2625 | string1++; | |
2626 | while (isspace (*string2)) | |
2627 | string2++; | |
2628 | ||
559a7a62 JK |
2629 | switch (case_pass) |
2630 | { | |
2631 | case case_sensitive_off: | |
2632 | c1 = tolower ((unsigned char) *string1); | |
2633 | c2 = tolower ((unsigned char) *string2); | |
2634 | break; | |
2635 | case case_sensitive_on: | |
b11b1f88 JK |
2636 | c1 = *string1; |
2637 | c2 = *string2; | |
559a7a62 JK |
2638 | break; |
2639 | } | |
b11b1f88 JK |
2640 | if (c1 != c2) |
2641 | break; | |
2642 | ||
2643 | if (*string1 != '\0') | |
2644 | { | |
2645 | string1++; | |
2646 | string2++; | |
2647 | } | |
0fe19209 | 2648 | } |
b11b1f88 JK |
2649 | |
2650 | switch (*string1) | |
0fe19209 | 2651 | { |
b11b1f88 JK |
2652 | /* Characters are non-equal unless they're both '\0'; we want to |
2653 | make sure we get the comparison right according to our | |
2654 | comparison in the cases where one of them is '\0' or '('. */ | |
2655 | case '\0': | |
2656 | if (*string2 == '\0') | |
559a7a62 | 2657 | break; |
b11b1f88 JK |
2658 | else |
2659 | return -1; | |
2660 | case '(': | |
2661 | if (*string2 == '\0') | |
2662 | return 1; | |
2663 | else | |
2664 | return -1; | |
2665 | default: | |
2666 | if (*string2 == '\0' || *string2 == '(') | |
2667 | return 1; | |
559a7a62 JK |
2668 | else if (c1 > c2) |
2669 | return 1; | |
2670 | else if (c1 < c2) | |
2671 | return -1; | |
2672 | /* PASSTHRU */ | |
0fe19209 | 2673 | } |
559a7a62 JK |
2674 | |
2675 | if (case_pass == case_sensitive_on) | |
2676 | return 0; | |
2677 | ||
2678 | /* Otherwise the strings were equal in case insensitive way, make | |
2679 | a more fine grained comparison in a case sensitive way. */ | |
2680 | ||
2681 | case_pass = case_sensitive_on; | |
2682 | string1 = saved_string1; | |
2683 | string2 = saved_string2; | |
0fe19209 | 2684 | } |
0fe19209 DC |
2685 | } |
2686 | ||
459a2e4c | 2687 | /* See utils.h. */ |
2de7ced7 | 2688 | |
459a2e4c | 2689 | bool |
2de7ced7 DJ |
2690 | streq (const char *lhs, const char *rhs) |
2691 | { | |
2692 | return !strcmp (lhs, rhs); | |
2693 | } | |
459a2e4c TT |
2694 | |
2695 | /* See utils.h. */ | |
2696 | ||
2697 | int | |
2698 | streq_hash (const void *lhs, const void *rhs) | |
2699 | { | |
2700 | return streq ((const char *) lhs, (const char *) rhs); | |
2701 | } | |
2702 | ||
c906108c | 2703 | \f |
c5aa993b | 2704 | |
c906108c | 2705 | /* |
c5aa993b JM |
2706 | ** subset_compare() |
2707 | ** Answer whether string_to_compare is a full or partial match to | |
2708 | ** template_string. The partial match must be in sequence starting | |
2709 | ** at index 0. | |
2710 | */ | |
c906108c | 2711 | int |
a121b7c1 | 2712 | subset_compare (const char *string_to_compare, const char *template_string) |
7a292a7a SS |
2713 | { |
2714 | int match; | |
e0627e85 | 2715 | |
8731e58e AC |
2716 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2717 | && strlen (string_to_compare) <= strlen (template_string)) | |
2718 | match = | |
61012eef | 2719 | (startswith (template_string, string_to_compare)); |
7a292a7a SS |
2720 | else |
2721 | match = 0; | |
2722 | return match; | |
2723 | } | |
c906108c | 2724 | |
75feb17d DJ |
2725 | static void |
2726 | show_debug_timestamp (struct ui_file *file, int from_tty, | |
2727 | struct cmd_list_element *c, const char *value) | |
2728 | { | |
3e43a32a MS |
2729 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
2730 | value); | |
75feb17d | 2731 | } |
c906108c | 2732 | \f |
c5aa993b | 2733 | |
c906108c | 2734 | void |
fba45db2 | 2735 | initialize_utils (void) |
c906108c | 2736 | { |
35096d9d | 2737 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
77dec115 EZ |
2738 | Set number of characters where GDB should wrap lines of its output."), _("\ |
2739 | Show number of characters where GDB should wrap lines of its output."), _("\ | |
2740 | This affects where GDB wraps its output to fit the screen width.\n\ | |
f81d1120 | 2741 | Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."), |
35096d9d | 2742 | set_width_command, |
920d2a44 | 2743 | show_chars_per_line, |
35096d9d AC |
2744 | &setlist, &showlist); |
2745 | ||
2746 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ | |
77dec115 EZ |
2747 | Set number of lines in a page for GDB output pagination."), _("\ |
2748 | Show number of lines in a page for GDB output pagination."), _("\ | |
2749 | This affects the number of lines after which GDB will pause\n\ | |
2750 | its output and ask you whether to continue.\n\ | |
f81d1120 | 2751 | Setting this to \"unlimited\" or zero causes GDB never pause during output."), |
35096d9d | 2752 | set_height_command, |
920d2a44 | 2753 | show_lines_per_page, |
35096d9d | 2754 | &setlist, &showlist); |
c5aa993b | 2755 | |
5bf193a2 AC |
2756 | add_setshow_boolean_cmd ("pagination", class_support, |
2757 | &pagination_enabled, _("\ | |
77dec115 EZ |
2758 | Set state of GDB output pagination."), _("\ |
2759 | Show state of GDB output pagination."), _("\ | |
2760 | When pagination is ON, GDB pauses at end of each screenful of\n\ | |
2761 | its output and asks you whether to continue.\n\ | |
f81d1120 | 2762 | Turning pagination off is an alternative to \"set height unlimited\"."), |
5bf193a2 | 2763 | NULL, |
920d2a44 | 2764 | show_pagination_enabled, |
5bf193a2 | 2765 | &setlist, &showlist); |
4261bedc | 2766 | |
5bf193a2 AC |
2767 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
2768 | &sevenbit_strings, _("\ | |
2769 | Set printing of 8-bit characters in strings as \\nnn."), _("\ | |
2770 | Show printing of 8-bit characters in strings as \\nnn."), NULL, | |
2771 | NULL, | |
920d2a44 | 2772 | show_sevenbit_strings, |
5bf193a2 AC |
2773 | &setprintlist, &showprintlist); |
2774 | ||
75feb17d DJ |
2775 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
2776 | &debug_timestamp, _("\ | |
2777 | Set timestamping of debugging messages."), _("\ | |
2778 | Show timestamping of debugging messages."), _("\ | |
2779 | When set, debugging messages will be marked with seconds and microseconds."), | |
2780 | NULL, | |
2781 | show_debug_timestamp, | |
2782 | &setdebuglist, &showdebuglist); | |
c906108c SS |
2783 | } |
2784 | ||
a738ea1d YQ |
2785 | /* See utils.h. */ |
2786 | ||
2787 | CORE_ADDR | |
2788 | address_significant (gdbarch *gdbarch, CORE_ADDR addr) | |
2789 | { | |
8727de56 OJ |
2790 | /* Clear insignificant bits of a target address and sign extend resulting |
2791 | address, avoiding shifts larger or equal than the width of a CORE_ADDR. | |
2792 | The local variable ADDR_BIT stops the compiler reporting a shift overflow | |
5969f0db OJ |
2793 | when it won't occur. Skip updating of target address if current target |
2794 | has not set gdbarch significant_addr_bit. */ | |
a738ea1d YQ |
2795 | int addr_bit = gdbarch_significant_addr_bit (gdbarch); |
2796 | ||
5969f0db | 2797 | if (addr_bit && (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))) |
8727de56 OJ |
2798 | { |
2799 | CORE_ADDR sign = (CORE_ADDR) 1 << (addr_bit - 1); | |
2800 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2801 | addr = (addr ^ sign) - sign; | |
2802 | } | |
a738ea1d YQ |
2803 | |
2804 | return addr; | |
2805 | } | |
2806 | ||
66bf4b3a | 2807 | const char * |
5af949e3 | 2808 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
66bf4b3a AC |
2809 | { |
2810 | /* Truncate address to the size of a target address, avoiding shifts | |
2811 | larger or equal than the width of a CORE_ADDR. The local | |
2812 | variable ADDR_BIT stops the compiler reporting a shift overflow | |
581e13c1 | 2813 | when it won't occur. */ |
66bf4b3a AC |
2814 | /* NOTE: This assumes that the significant address information is |
2815 | kept in the least significant bits of ADDR - the upper bits were | |
76e71323 | 2816 | either zero or sign extended. Should gdbarch_address_to_pointer or |
66bf4b3a AC |
2817 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
2818 | ||
5af949e3 | 2819 | int addr_bit = gdbarch_addr_bit (gdbarch); |
66bf4b3a AC |
2820 | |
2821 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2822 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2823 | return hex_string (addr); | |
2824 | } | |
2825 | ||
f1310107 TJB |
2826 | /* This function is described in "defs.h". */ |
2827 | ||
2828 | const char * | |
2829 | print_core_address (struct gdbarch *gdbarch, CORE_ADDR address) | |
2830 | { | |
2831 | int addr_bit = gdbarch_addr_bit (gdbarch); | |
2832 | ||
2833 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
2834 | address &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
2835 | ||
2836 | /* FIXME: cagney/2002-05-03: Need local_address_string() function | |
2837 | that returns the language localized string formatted to a width | |
2838 | based on gdbarch_addr_bit. */ | |
2839 | if (addr_bit <= 32) | |
2840 | return hex_string_custom (address, 8); | |
2841 | else | |
2842 | return hex_string_custom (address, 16); | |
2843 | } | |
2844 | ||
8e3b41a9 JK |
2845 | /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */ |
2846 | ||
2847 | hashval_t | |
2848 | core_addr_hash (const void *ap) | |
2849 | { | |
19ba03f4 | 2850 | const CORE_ADDR *addrp = (const CORE_ADDR *) ap; |
8e3b41a9 JK |
2851 | |
2852 | return *addrp; | |
2853 | } | |
2854 | ||
2855 | /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */ | |
2856 | ||
2857 | int | |
2858 | core_addr_eq (const void *ap, const void *bp) | |
2859 | { | |
19ba03f4 SM |
2860 | const CORE_ADDR *addr_ap = (const CORE_ADDR *) ap; |
2861 | const CORE_ADDR *addr_bp = (const CORE_ADDR *) bp; | |
8e3b41a9 JK |
2862 | |
2863 | return *addr_ap == *addr_bp; | |
2864 | } | |
2865 | ||
03dd37c3 AC |
2866 | /* Convert a string back into a CORE_ADDR. */ |
2867 | CORE_ADDR | |
2868 | string_to_core_addr (const char *my_string) | |
2869 | { | |
2870 | CORE_ADDR addr = 0; | |
9544c605 | 2871 | |
03dd37c3 AC |
2872 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
2873 | { | |
ced572fe | 2874 | /* Assume that it is in hex. */ |
03dd37c3 | 2875 | int i; |
5d502164 | 2876 | |
03dd37c3 AC |
2877 | for (i = 2; my_string[i] != '\0'; i++) |
2878 | { | |
2879 | if (isdigit (my_string[i])) | |
2880 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2881 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2882 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2883 | else | |
63f06803 | 2884 | error (_("invalid hex \"%s\""), my_string); |
03dd37c3 AC |
2885 | } |
2886 | } | |
2887 | else | |
2888 | { | |
2889 | /* Assume that it is in decimal. */ | |
2890 | int i; | |
5d502164 | 2891 | |
03dd37c3 AC |
2892 | for (i = 0; my_string[i] != '\0'; i++) |
2893 | { | |
2894 | if (isdigit (my_string[i])) | |
2895 | addr = (my_string[i] - '0') + (addr * 10); | |
2896 | else | |
63f06803 | 2897 | error (_("invalid decimal \"%s\""), my_string); |
03dd37c3 AC |
2898 | } |
2899 | } | |
9544c605 | 2900 | |
03dd37c3 AC |
2901 | return addr; |
2902 | } | |
58d370e0 | 2903 | |
14278e1f TT |
2904 | #if GDB_SELF_TEST |
2905 | ||
2906 | static void | |
2907 | gdb_realpath_check_trailer (const char *input, const char *trailer) | |
2908 | { | |
2909 | gdb::unique_xmalloc_ptr<char> result = gdb_realpath (input); | |
2910 | ||
2911 | size_t len = strlen (result.get ()); | |
2912 | size_t trail_len = strlen (trailer); | |
2913 | ||
2914 | SELF_CHECK (len >= trail_len | |
2915 | && strcmp (result.get () + len - trail_len, trailer) == 0); | |
2916 | } | |
2917 | ||
2918 | static void | |
2919 | gdb_realpath_tests () | |
2920 | { | |
2921 | /* A file which contains a directory prefix. */ | |
2922 | gdb_realpath_check_trailer ("./xfullpath.exp", "/xfullpath.exp"); | |
2923 | /* A file which contains a directory prefix. */ | |
2924 | gdb_realpath_check_trailer ("../../defs.h", "/defs.h"); | |
2925 | /* A one-character filename. */ | |
2926 | gdb_realpath_check_trailer ("./a", "/a"); | |
2927 | /* A file in the root directory. */ | |
2928 | gdb_realpath_check_trailer ("/root_file_which_should_exist", | |
2929 | "/root_file_which_should_exist"); | |
2930 | /* A file which does not have a directory prefix. */ | |
2931 | gdb_realpath_check_trailer ("xfullpath.exp", "xfullpath.exp"); | |
2932 | /* A one-char filename without any directory prefix. */ | |
2933 | gdb_realpath_check_trailer ("a", "a"); | |
2934 | /* An empty filename. */ | |
2935 | gdb_realpath_check_trailer ("", ""); | |
2936 | } | |
2937 | ||
2938 | #endif /* GDB_SELF_TEST */ | |
2939 | ||
ae5a43e0 DJ |
2940 | /* Allocation function for the libiberty hash table which uses an |
2941 | obstack. The obstack is passed as DATA. */ | |
2942 | ||
2943 | void * | |
2944 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
2945 | { | |
241fd515 | 2946 | size_t total = size * count; |
ae5a43e0 | 2947 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
e0627e85 | 2948 | |
ae5a43e0 DJ |
2949 | memset (ptr, 0, total); |
2950 | return ptr; | |
2951 | } | |
2952 | ||
2953 | /* Trivial deallocation function for the libiberty splay tree and hash | |
2954 | table - don't deallocate anything. Rely on later deletion of the | |
2955 | obstack. DATA will be the obstack, although it is not needed | |
2956 | here. */ | |
2957 | ||
2958 | void | |
2959 | dummy_obstack_deallocate (void *object, void *data) | |
2960 | { | |
2961 | return; | |
2962 | } | |
253c8abb | 2963 | |
e1024ff1 DJ |
2964 | /* Simple, portable version of dirname that does not modify its |
2965 | argument. */ | |
2966 | ||
d721ba37 | 2967 | std::string |
e1024ff1 DJ |
2968 | ldirname (const char *filename) |
2969 | { | |
d721ba37 | 2970 | std::string dirname; |
e1024ff1 | 2971 | const char *base = lbasename (filename); |
e1024ff1 DJ |
2972 | |
2973 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) | |
2974 | --base; | |
2975 | ||
2976 | if (base == filename) | |
d721ba37 | 2977 | return dirname; |
e1024ff1 | 2978 | |
d721ba37 | 2979 | dirname = std::string (filename, base - filename); |
e1024ff1 DJ |
2980 | |
2981 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we | |
2982 | create "d:./bar" later instead of the (different) "d:/bar". */ | |
2983 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) | |
2984 | && !IS_DIR_SEPARATOR (filename[0])) | |
2985 | dirname[base++ - filename] = '.'; | |
2986 | ||
e1024ff1 DJ |
2987 | return dirname; |
2988 | } | |
d1a41061 | 2989 | |
773a1edc TT |
2990 | /* See utils.h. */ |
2991 | ||
2992 | void | |
2993 | gdb_argv::reset (const char *s) | |
2994 | { | |
2995 | char **argv = buildargv (s); | |
2996 | ||
2997 | if (s != NULL && argv == NULL) | |
2998 | malloc_failure (0); | |
2999 | ||
3000 | freeargv (m_argv); | |
3001 | m_argv = argv; | |
3002 | } | |
3003 | ||
dc146f7c VP |
3004 | int |
3005 | compare_positive_ints (const void *ap, const void *bp) | |
3006 | { | |
3007 | /* Because we know we're comparing two ints which are positive, | |
3008 | there's no danger of overflow here. */ | |
3009 | return * (int *) ap - * (int *) bp; | |
3010 | } | |
3011 | ||
d18b8b7a | 3012 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
3e43a32a MS |
3013 | #define AMBIGUOUS_MESS2 \ |
3014 | ".\nUse \"set gnutarget format-name\" to specify the format." | |
d18b8b7a | 3015 | |
803c08d0 | 3016 | std::string |
d18b8b7a HZ |
3017 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) |
3018 | { | |
d18b8b7a HZ |
3019 | char **p; |
3020 | ||
3021 | /* Check if errmsg just need simple return. */ | |
3022 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) | |
3023 | return bfd_errmsg (error_tag); | |
3024 | ||
803c08d0 TT |
3025 | std::string ret (bfd_errmsg (error_tag)); |
3026 | ret += AMBIGUOUS_MESS1; | |
d18b8b7a HZ |
3027 | |
3028 | for (p = matching; *p; p++) | |
3029 | { | |
803c08d0 TT |
3030 | ret += " "; |
3031 | ret += *p; | |
d18b8b7a | 3032 | } |
803c08d0 | 3033 | ret += AMBIGUOUS_MESS2; |
d18b8b7a | 3034 | |
803c08d0 | 3035 | xfree (matching); |
d18b8b7a HZ |
3036 | |
3037 | return ret; | |
3038 | } | |
3039 | ||
74164c56 JK |
3040 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
3041 | ||
3042 | int | |
c0939df1 | 3043 | parse_pid_to_attach (const char *args) |
74164c56 JK |
3044 | { |
3045 | unsigned long pid; | |
3046 | char *dummy; | |
3047 | ||
3048 | if (!args) | |
3049 | error_no_arg (_("process-id to attach")); | |
3050 | ||
c0939df1 | 3051 | dummy = (char *) args; |
74164c56 JK |
3052 | pid = strtoul (args, &dummy, 0); |
3053 | /* Some targets don't set errno on errors, grrr! */ | |
3054 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) | |
3055 | error (_("Illegal process-id: %s."), args); | |
3056 | ||
3057 | return pid; | |
3058 | } | |
3059 | ||
6dea1fbd JK |
3060 | /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP |
3061 | must come from xrealloc-compatible allocator and it may be updated. FROM | |
1564a261 JK |
3062 | needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be |
3063 | located at the start or end of *STRINGP. */ | |
6dea1fbd JK |
3064 | |
3065 | void | |
3066 | substitute_path_component (char **stringp, const char *from, const char *to) | |
3067 | { | |
3068 | char *string = *stringp, *s; | |
3069 | const size_t from_len = strlen (from); | |
3070 | const size_t to_len = strlen (to); | |
3071 | ||
3072 | for (s = string;;) | |
3073 | { | |
3074 | s = strstr (s, from); | |
3075 | if (s == NULL) | |
3076 | break; | |
3077 | ||
1564a261 JK |
3078 | if ((s == string || IS_DIR_SEPARATOR (s[-1]) |
3079 | || s[-1] == DIRNAME_SEPARATOR) | |
3080 | && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]) | |
3081 | || s[from_len] == DIRNAME_SEPARATOR)) | |
6dea1fbd JK |
3082 | { |
3083 | char *string_new; | |
3084 | ||
224c3ddb SM |
3085 | string_new |
3086 | = (char *) xrealloc (string, (strlen (string) + to_len + 1)); | |
6dea1fbd JK |
3087 | |
3088 | /* Relocate the current S pointer. */ | |
3089 | s = s - string + string_new; | |
3090 | string = string_new; | |
3091 | ||
3092 | /* Replace from by to. */ | |
3093 | memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); | |
3094 | memcpy (s, to, to_len); | |
3095 | ||
3096 | s += to_len; | |
3097 | } | |
3098 | else | |
3099 | s++; | |
3100 | } | |
3101 | ||
3102 | *stringp = string; | |
3103 | } | |
3104 | ||
0b6cb71e DE |
3105 | #ifdef HAVE_WAITPID |
3106 | ||
3107 | #ifdef SIGALRM | |
3108 | ||
3109 | /* SIGALRM handler for waitpid_with_timeout. */ | |
3110 | ||
3111 | static void | |
3112 | sigalrm_handler (int signo) | |
3113 | { | |
3114 | /* Nothing to do. */ | |
3115 | } | |
3116 | ||
3117 | #endif | |
3118 | ||
3119 | /* Wrapper to wait for child PID to die with TIMEOUT. | |
3120 | TIMEOUT is the time to stop waiting in seconds. | |
3121 | If TIMEOUT is zero, pass WNOHANG to waitpid. | |
3122 | Returns PID if it was successfully waited for, otherwise -1. | |
3123 | ||
3124 | Timeouts are currently implemented with alarm and SIGALRM. | |
3125 | If the host does not support them, this waits "forever". | |
3126 | It would be odd though for a host to have waitpid and not SIGALRM. */ | |
3127 | ||
3128 | pid_t | |
3129 | wait_to_die_with_timeout (pid_t pid, int *status, int timeout) | |
3130 | { | |
3131 | pid_t waitpid_result; | |
3132 | ||
3133 | gdb_assert (pid > 0); | |
3134 | gdb_assert (timeout >= 0); | |
3135 | ||
3136 | if (timeout > 0) | |
3137 | { | |
3138 | #ifdef SIGALRM | |
3139 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3140 | struct sigaction sa, old_sa; | |
3141 | ||
3142 | sa.sa_handler = sigalrm_handler; | |
3143 | sigemptyset (&sa.sa_mask); | |
3144 | sa.sa_flags = 0; | |
3145 | sigaction (SIGALRM, &sa, &old_sa); | |
3146 | #else | |
a40805d4 | 3147 | sighandler_t ofunc; |
0b6cb71e | 3148 | |
a40805d4 | 3149 | ofunc = signal (SIGALRM, sigalrm_handler); |
0b6cb71e DE |
3150 | #endif |
3151 | ||
3152 | alarm (timeout); | |
3153 | #endif | |
3154 | ||
3155 | waitpid_result = waitpid (pid, status, 0); | |
3156 | ||
3157 | #ifdef SIGALRM | |
3158 | alarm (0); | |
3159 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
3160 | sigaction (SIGALRM, &old_sa, NULL); | |
3161 | #else | |
3162 | signal (SIGALRM, ofunc); | |
3163 | #endif | |
3164 | #endif | |
3165 | } | |
3166 | else | |
3167 | waitpid_result = waitpid (pid, status, WNOHANG); | |
3168 | ||
3169 | if (waitpid_result == pid) | |
3170 | return pid; | |
3171 | else | |
3172 | return -1; | |
3173 | } | |
3174 | ||
3175 | #endif /* HAVE_WAITPID */ | |
3176 | ||
202cbf1c JK |
3177 | /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files. |
3178 | Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS. | |
3179 | ||
3180 | It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and | |
3181 | HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */ | |
3182 | ||
3183 | int | |
3184 | gdb_filename_fnmatch (const char *pattern, const char *string, int flags) | |
3185 | { | |
3186 | gdb_assert ((flags & FNM_FILE_NAME) != 0); | |
3187 | ||
3188 | /* It is unclear how '\' escaping vs. directory separator should coexist. */ | |
3189 | gdb_assert ((flags & FNM_NOESCAPE) != 0); | |
3190 | ||
3191 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
3192 | { | |
3193 | char *pattern_slash, *string_slash; | |
3194 | ||
3195 | /* Replace '\' by '/' in both strings. */ | |
3196 | ||
0ae1c716 | 3197 | pattern_slash = (char *) alloca (strlen (pattern) + 1); |
202cbf1c JK |
3198 | strcpy (pattern_slash, pattern); |
3199 | pattern = pattern_slash; | |
3200 | for (; *pattern_slash != 0; pattern_slash++) | |
3201 | if (IS_DIR_SEPARATOR (*pattern_slash)) | |
3202 | *pattern_slash = '/'; | |
3203 | ||
0ae1c716 | 3204 | string_slash = (char *) alloca (strlen (string) + 1); |
202cbf1c JK |
3205 | strcpy (string_slash, string); |
3206 | string = string_slash; | |
3207 | for (; *string_slash != 0; string_slash++) | |
3208 | if (IS_DIR_SEPARATOR (*string_slash)) | |
3209 | *string_slash = '/'; | |
3210 | } | |
3211 | #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ | |
3212 | ||
3213 | #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM | |
3214 | flags |= FNM_CASEFOLD; | |
3215 | #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */ | |
3216 | ||
3217 | return fnmatch (pattern, string, flags); | |
3218 | } | |
3219 | ||
cce0e923 DE |
3220 | /* Return the number of path elements in PATH. |
3221 | / = 1 | |
3222 | /foo = 2 | |
3223 | /foo/ = 2 | |
3224 | foo/bar = 2 | |
3225 | foo/ = 1 */ | |
3226 | ||
3227 | int | |
3228 | count_path_elements (const char *path) | |
3229 | { | |
3230 | int count = 0; | |
3231 | const char *p = path; | |
3232 | ||
3233 | if (HAS_DRIVE_SPEC (p)) | |
3234 | { | |
3235 | p = STRIP_DRIVE_SPEC (p); | |
3236 | ++count; | |
3237 | } | |
3238 | ||
3239 | while (*p != '\0') | |
3240 | { | |
3241 | if (IS_DIR_SEPARATOR (*p)) | |
3242 | ++count; | |
3243 | ++p; | |
3244 | } | |
3245 | ||
3246 | /* Backup one if last character is /, unless it's the only one. */ | |
3247 | if (p > path + 1 && IS_DIR_SEPARATOR (p[-1])) | |
3248 | --count; | |
3249 | ||
3250 | /* Add one for the file name, if present. */ | |
3251 | if (p > path && !IS_DIR_SEPARATOR (p[-1])) | |
3252 | ++count; | |
3253 | ||
3254 | return count; | |
3255 | } | |
3256 | ||
3257 | /* Remove N leading path elements from PATH. | |
3258 | N must be non-negative. | |
3259 | If PATH has more than N path elements then return NULL. | |
3260 | If PATH has exactly N path elements then return "". | |
3261 | See count_path_elements for a description of how we do the counting. */ | |
3262 | ||
3263 | const char * | |
3264 | strip_leading_path_elements (const char *path, int n) | |
3265 | { | |
3266 | int i = 0; | |
3267 | const char *p = path; | |
3268 | ||
3269 | gdb_assert (n >= 0); | |
3270 | ||
3271 | if (n == 0) | |
3272 | return p; | |
3273 | ||
3274 | if (HAS_DRIVE_SPEC (p)) | |
3275 | { | |
3276 | p = STRIP_DRIVE_SPEC (p); | |
3277 | ++i; | |
3278 | } | |
3279 | ||
3280 | while (i < n) | |
3281 | { | |
3282 | while (*p != '\0' && !IS_DIR_SEPARATOR (*p)) | |
3283 | ++p; | |
3284 | if (*p == '\0') | |
3285 | { | |
3286 | if (i + 1 == n) | |
3287 | return ""; | |
3288 | return NULL; | |
3289 | } | |
3290 | ++p; | |
3291 | ++i; | |
3292 | } | |
3293 | ||
3294 | return p; | |
3295 | } | |
3296 | ||
a99bc3d2 JB |
3297 | /* See utils.h. */ |
3298 | ||
3299 | void | |
3300 | copy_bitwise (gdb_byte *dest, ULONGEST dest_offset, | |
3301 | const gdb_byte *source, ULONGEST source_offset, | |
3302 | ULONGEST nbits, int bits_big_endian) | |
3303 | { | |
3304 | unsigned int buf, avail; | |
3305 | ||
3306 | if (nbits == 0) | |
3307 | return; | |
3308 | ||
3309 | if (bits_big_endian) | |
3310 | { | |
3311 | /* Start from the end, then work backwards. */ | |
3312 | dest_offset += nbits - 1; | |
3313 | dest += dest_offset / 8; | |
3314 | dest_offset = 7 - dest_offset % 8; | |
3315 | source_offset += nbits - 1; | |
3316 | source += source_offset / 8; | |
3317 | source_offset = 7 - source_offset % 8; | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | dest += dest_offset / 8; | |
3322 | dest_offset %= 8; | |
3323 | source += source_offset / 8; | |
3324 | source_offset %= 8; | |
3325 | } | |
3326 | ||
3327 | /* Fill BUF with DEST_OFFSET bits from the destination and 8 - | |
3328 | SOURCE_OFFSET bits from the source. */ | |
3329 | buf = *(bits_big_endian ? source-- : source++) >> source_offset; | |
3330 | buf <<= dest_offset; | |
3331 | buf |= *dest & ((1 << dest_offset) - 1); | |
3332 | ||
3333 | /* NBITS: bits yet to be written; AVAIL: BUF's fill level. */ | |
3334 | nbits += dest_offset; | |
3335 | avail = dest_offset + 8 - source_offset; | |
3336 | ||
3337 | /* Flush 8 bits from BUF, if appropriate. */ | |
3338 | if (nbits >= 8 && avail >= 8) | |
3339 | { | |
3340 | *(bits_big_endian ? dest-- : dest++) = buf; | |
3341 | buf >>= 8; | |
3342 | avail -= 8; | |
3343 | nbits -= 8; | |
3344 | } | |
3345 | ||
3346 | /* Copy the middle part. */ | |
3347 | if (nbits >= 8) | |
3348 | { | |
3349 | size_t len = nbits / 8; | |
3350 | ||
3351 | /* Use a faster method for byte-aligned copies. */ | |
3352 | if (avail == 0) | |
3353 | { | |
3354 | if (bits_big_endian) | |
3355 | { | |
3356 | dest -= len; | |
3357 | source -= len; | |
3358 | memcpy (dest + 1, source + 1, len); | |
3359 | } | |
3360 | else | |
3361 | { | |
3362 | memcpy (dest, source, len); | |
3363 | dest += len; | |
3364 | source += len; | |
3365 | } | |
3366 | } | |
3367 | else | |
3368 | { | |
3369 | while (len--) | |
3370 | { | |
3371 | buf |= *(bits_big_endian ? source-- : source++) << avail; | |
3372 | *(bits_big_endian ? dest-- : dest++) = buf; | |
3373 | buf >>= 8; | |
3374 | } | |
3375 | } | |
3376 | nbits %= 8; | |
3377 | } | |
3378 | ||
3379 | /* Write the last byte. */ | |
3380 | if (nbits) | |
3381 | { | |
3382 | if (avail < nbits) | |
3383 | buf |= *source << avail; | |
3384 | ||
3385 | buf &= (1 << nbits) - 1; | |
3386 | *dest = (*dest & (~0 << nbits)) | buf; | |
3387 | } | |
3388 | } | |
3389 | ||
3c16cced PA |
3390 | void |
3391 | _initialize_utils (void) | |
3392 | { | |
3393 | add_internal_problem_command (&internal_error_problem); | |
3394 | add_internal_problem_command (&internal_warning_problem); | |
57fcfb1b | 3395 | add_internal_problem_command (&demangler_warning_problem); |
14278e1f TT |
3396 | |
3397 | #if GDB_SELF_TEST | |
1526853e | 3398 | selftests::register_test ("gdb_realpath", gdb_realpath_tests); |
14278e1f | 3399 | #endif |
3c16cced | 3400 | } |