Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - breakpoint and watchpoint commands. |
618f726f | 2 | Copyright (C) 2000-2016 Free Software Foundation, Inc. |
ab91fdd5 | 3 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 AC |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 |
fb40c209 AC |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
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/>. */ |
fb40c209 AC |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
fb40c209 AC |
22 | #include "mi-cmds.h" |
23 | #include "ui-out.h" | |
24 | #include "mi-out.h" | |
25 | #include "breakpoint.h" | |
fb40c209 | 26 | #include "mi-getopt.h" |
5b7f31a4 | 27 | #include "gdb.h" |
383f836e | 28 | #include "observer.h" |
8d3788bd | 29 | #include "mi-main.h" |
91985142 | 30 | #include "mi-cmd-break.h" |
f00aae0f KS |
31 | #include "language.h" |
32 | #include "location.h" | |
33 | #include "linespec.h" | |
c5867ab6 HZ |
34 | #include "gdb_obstack.h" |
35 | #include <ctype.h> | |
fb40c209 | 36 | |
fb40c209 AC |
37 | enum |
38 | { | |
39 | FROM_TTY = 0 | |
40 | }; | |
41 | ||
383f836e TT |
42 | /* True if MI breakpoint observers have been registered. */ |
43 | ||
44 | static int mi_breakpoint_observers_installed; | |
45 | ||
46 | /* Control whether breakpoint_notify may act. */ | |
47 | ||
48 | static int mi_can_breakpoint_notify; | |
49 | ||
2b03b41d | 50 | /* Output a single breakpoint, when allowed. */ |
fb40c209 AC |
51 | |
52 | static void | |
8d3788bd | 53 | breakpoint_notify (struct breakpoint *b) |
fb40c209 | 54 | { |
383f836e | 55 | if (mi_can_breakpoint_notify) |
79a45e25 | 56 | gdb_breakpoint_query (current_uiout, b->number, NULL); |
fb40c209 AC |
57 | } |
58 | ||
fb40c209 AC |
59 | enum bp_type |
60 | { | |
61 | REG_BP, | |
62 | HW_BP, | |
63 | REGEXP_BP | |
64 | }; | |
65 | ||
91985142 MG |
66 | /* Arrange for all new breakpoints and catchpoints to be reported to |
67 | CURRENT_UIOUT until the cleanup returned by this function is run. | |
68 | ||
69 | Note that MI output will be probably invalid if more than one | |
70 | breakpoint is created inside one MI command. */ | |
71 | ||
72 | struct cleanup * | |
73 | setup_breakpoint_reporting (void) | |
74 | { | |
75 | struct cleanup *rev_flag; | |
76 | ||
77 | if (! mi_breakpoint_observers_installed) | |
78 | { | |
79 | observer_attach_breakpoint_created (breakpoint_notify); | |
80 | mi_breakpoint_observers_installed = 1; | |
81 | } | |
82 | ||
83 | rev_flag = make_cleanup_restore_integer (&mi_can_breakpoint_notify); | |
84 | mi_can_breakpoint_notify = 1; | |
85 | ||
86 | return rev_flag; | |
87 | } | |
88 | ||
89 | ||
c5867ab6 HZ |
90 | /* Convert arguments in ARGV to the string in "format",argv,argv... |
91 | and return it. */ | |
fb40c209 | 92 | |
c5867ab6 HZ |
93 | static char * |
94 | mi_argv_to_format (char **argv, int argc) | |
95 | { | |
96 | int i; | |
97 | struct obstack obstack; | |
98 | char *ret; | |
99 | ||
100 | obstack_init (&obstack); | |
101 | ||
102 | /* Convert ARGV[OIND + 1] to format string and save to FORMAT. */ | |
103 | obstack_1grow (&obstack, '\"'); | |
104 | for (i = 0; i < strlen (argv[0]); i++) | |
105 | { | |
106 | switch (argv[0][i]) | |
107 | { | |
108 | case '\\': | |
109 | obstack_grow (&obstack, "\\\\", 2); | |
110 | break; | |
111 | case '\a': | |
112 | obstack_grow (&obstack, "\\a", 2); | |
113 | break; | |
114 | case '\b': | |
115 | obstack_grow (&obstack, "\\b", 2); | |
116 | break; | |
117 | case '\f': | |
118 | obstack_grow (&obstack, "\\f", 2); | |
119 | break; | |
120 | case '\n': | |
121 | obstack_grow (&obstack, "\\n", 2); | |
122 | break; | |
123 | case '\r': | |
124 | obstack_grow (&obstack, "\\r", 2); | |
125 | break; | |
126 | case '\t': | |
127 | obstack_grow (&obstack, "\\t", 2); | |
128 | break; | |
129 | case '\v': | |
130 | obstack_grow (&obstack, "\\v", 2); | |
131 | break; | |
fa876972 HZ |
132 | case '"': |
133 | obstack_grow (&obstack, "\\\"", 2); | |
134 | break; | |
c5867ab6 HZ |
135 | default: |
136 | if (isprint (argv[0][i])) | |
137 | obstack_grow (&obstack, argv[0] + i, 1); | |
138 | else | |
139 | { | |
140 | char tmp[5]; | |
141 | ||
ce70887a JB |
142 | xsnprintf (tmp, sizeof (tmp), "\\%o", |
143 | (unsigned char) argv[0][i]); | |
c5867ab6 HZ |
144 | obstack_grow (&obstack, tmp, strlen (tmp)); |
145 | } | |
146 | break; | |
147 | } | |
148 | } | |
149 | obstack_1grow (&obstack, '\"'); | |
150 | ||
151 | /* Apply other argv to FORMAT. */ | |
152 | for (i = 1; i < argc; i++) | |
153 | { | |
154 | obstack_1grow (&obstack, ','); | |
155 | obstack_grow (&obstack, argv[i], strlen (argv[i])); | |
156 | } | |
157 | obstack_1grow (&obstack, '\0'); | |
158 | ||
224c3ddb | 159 | ret = xstrdup ((const char *) obstack_finish (&obstack)); |
c5867ab6 HZ |
160 | obstack_free (&obstack, NULL); |
161 | ||
162 | return ret; | |
163 | } | |
164 | ||
165 | /* Insert breakpoint. | |
166 | If dprintf is true, it will insert dprintf. | |
167 | If not, it will insert other type breakpoint. */ | |
168 | ||
169 | static void | |
170 | mi_cmd_break_insert_1 (int dprintf, char *command, char **argv, int argc) | |
fb40c209 AC |
171 | { |
172 | char *address = NULL; | |
8cdf0e15 | 173 | int hardware = 0; |
fb40c209 AC |
174 | int temp_p = 0; |
175 | int thread = -1; | |
176 | int ignore_count = 0; | |
177 | char *condition = NULL; | |
afe8ab22 | 178 | int pending = 0; |
41447f92 | 179 | int enabled = 1; |
6534d786 | 180 | int tracepoint = 0; |
c5867ab6 | 181 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
0fb4aa4b | 182 | enum bptype type_wanted; |
f00aae0f | 183 | struct event_location *location; |
19ca11c5 | 184 | struct breakpoint_ops *ops; |
eb8c4e2e | 185 | int is_explicit = 0; |
67994074 | 186 | struct explicit_location explicit_loc; |
c5867ab6 | 187 | char *extra_string = NULL; |
41447f92 | 188 | |
fb40c209 AC |
189 | enum opt |
190 | { | |
8cdf0e15 | 191 | HARDWARE_OPT, TEMP_OPT, CONDITION_OPT, |
6534d786 VP |
192 | IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT, |
193 | TRACEPOINT_OPT, | |
eb8c4e2e KS |
194 | EXPLICIT_SOURCE_OPT, EXPLICIT_FUNC_OPT, |
195 | EXPLICIT_LABEL_OPT, EXPLICIT_LINE_OPT | |
fb40c209 | 196 | }; |
91174723 | 197 | static const struct mi_opt opts[] = |
fb40c209 AC |
198 | { |
199 | {"h", HARDWARE_OPT, 0}, | |
200 | {"t", TEMP_OPT, 0}, | |
201 | {"c", CONDITION_OPT, 1}, | |
202 | {"i", IGNORE_COUNT_OPT, 1}, | |
203 | {"p", THREAD_OPT, 1}, | |
afe8ab22 | 204 | {"f", PENDING_OPT, 0}, |
41447f92 | 205 | {"d", DISABLE_OPT, 0}, |
6534d786 | 206 | {"a", TRACEPOINT_OPT, 0}, |
eb8c4e2e KS |
207 | {"-source" , EXPLICIT_SOURCE_OPT, 1}, |
208 | {"-function", EXPLICIT_FUNC_OPT, 1}, | |
209 | {"-label", EXPLICIT_LABEL_OPT, 1}, | |
210 | {"-line", EXPLICIT_LINE_OPT, 1}, | |
d5d6fca5 | 211 | { 0, 0, 0 } |
fb40c209 AC |
212 | }; |
213 | ||
214 | /* Parse arguments. It could be -r or -h or -t, <location> or ``--'' | |
215 | to denote the end of the option list. */ | |
f8c000a2 AS |
216 | int oind = 0; |
217 | char *oarg; | |
102040f0 | 218 | |
67994074 | 219 | initialize_explicit_location (&explicit_loc); |
eb8c4e2e | 220 | |
fb40c209 AC |
221 | while (1) |
222 | { | |
1b05df00 | 223 | int opt = mi_getopt ("-break-insert", argc, argv, |
f8c000a2 | 224 | opts, &oind, &oarg); |
fb40c209 AC |
225 | if (opt < 0) |
226 | break; | |
227 | switch ((enum opt) opt) | |
228 | { | |
229 | case TEMP_OPT: | |
230 | temp_p = 1; | |
231 | break; | |
232 | case HARDWARE_OPT: | |
8cdf0e15 | 233 | hardware = 1; |
fb40c209 | 234 | break; |
fb40c209 | 235 | case CONDITION_OPT: |
f8c000a2 | 236 | condition = oarg; |
fb40c209 AC |
237 | break; |
238 | case IGNORE_COUNT_OPT: | |
f8c000a2 | 239 | ignore_count = atol (oarg); |
fb40c209 AC |
240 | break; |
241 | case THREAD_OPT: | |
f8c000a2 | 242 | thread = atol (oarg); |
fb40c209 | 243 | break; |
afe8ab22 VP |
244 | case PENDING_OPT: |
245 | pending = 1; | |
246 | break; | |
41447f92 VP |
247 | case DISABLE_OPT: |
248 | enabled = 0; | |
6534d786 VP |
249 | break; |
250 | case TRACEPOINT_OPT: | |
251 | tracepoint = 1; | |
252 | break; | |
eb8c4e2e KS |
253 | case EXPLICIT_SOURCE_OPT: |
254 | is_explicit = 1; | |
67994074 | 255 | explicit_loc.source_filename = oarg; |
eb8c4e2e KS |
256 | break; |
257 | case EXPLICIT_FUNC_OPT: | |
258 | is_explicit = 1; | |
67994074 | 259 | explicit_loc.function_name = oarg; |
eb8c4e2e KS |
260 | break; |
261 | case EXPLICIT_LABEL_OPT: | |
262 | is_explicit = 1; | |
67994074 | 263 | explicit_loc.label_name = oarg; |
eb8c4e2e KS |
264 | break; |
265 | case EXPLICIT_LINE_OPT: | |
266 | is_explicit = 1; | |
67994074 | 267 | explicit_loc.line_offset = linespec_parse_line_offset (oarg); |
eb8c4e2e | 268 | break; |
fb40c209 AC |
269 | } |
270 | } | |
271 | ||
eb8c4e2e | 272 | if (oind >= argc && !is_explicit) |
c5867ab6 HZ |
273 | error (_("-%s-insert: Missing <location>"), |
274 | dprintf ? "dprintf" : "break"); | |
c5867ab6 HZ |
275 | if (dprintf) |
276 | { | |
eb8c4e2e | 277 | int format_num = is_explicit ? oind : oind + 1; |
c5867ab6 HZ |
278 | |
279 | if (hardware || tracepoint) | |
280 | error (_("-dprintf-insert: does not support -h or -a")); | |
281 | if (format_num >= argc) | |
282 | error (_("-dprintf-insert: Missing <format>")); | |
283 | ||
284 | extra_string = mi_argv_to_format (argv + format_num, argc - format_num); | |
285 | make_cleanup (xfree, extra_string); | |
eb8c4e2e | 286 | address = argv[oind]; |
c5867ab6 HZ |
287 | } |
288 | else | |
289 | { | |
eb8c4e2e KS |
290 | if (is_explicit) |
291 | { | |
292 | if (oind < argc) | |
293 | error (_("-break-insert: Garbage following explicit location")); | |
294 | } | |
295 | else | |
296 | { | |
297 | if (oind < argc - 1) | |
298 | error (_("-break-insert: Garbage following <location>")); | |
299 | address = argv[oind]; | |
300 | } | |
c5867ab6 | 301 | } |
fb40c209 | 302 | |
2b03b41d | 303 | /* Now we have what we need, let's insert the breakpoint! */ |
c5867ab6 HZ |
304 | setup_breakpoint_reporting (); |
305 | ||
306 | if (tracepoint) | |
307 | { | |
308 | /* Note that to request a fast tracepoint, the client uses the | |
309 | "hardware" flag, although there's nothing of hardware related to | |
310 | fast tracepoints -- one can implement slow tracepoints with | |
311 | hardware breakpoints, but fast tracepoints are always software. | |
312 | "fast" is a misnomer, actually, "jump" would be more appropriate. | |
313 | A simulator or an emulator could conceivably implement fast | |
314 | regular non-jump based tracepoints. */ | |
315 | type_wanted = hardware ? bp_fast_tracepoint : bp_tracepoint; | |
316 | ops = &tracepoint_breakpoint_ops; | |
317 | } | |
318 | else if (dprintf) | |
319 | { | |
320 | type_wanted = bp_dprintf; | |
321 | ops = &dprintf_breakpoint_ops; | |
322 | } | |
323 | else | |
324 | { | |
325 | type_wanted = hardware ? bp_hardware_breakpoint : bp_breakpoint; | |
326 | ops = &bkpt_breakpoint_ops; | |
327 | } | |
0fb4aa4b | 328 | |
eb8c4e2e KS |
329 | if (is_explicit) |
330 | { | |
331 | /* Error check -- we must have one of the other | |
332 | parameters specified. */ | |
67994074 KS |
333 | if (explicit_loc.source_filename != NULL |
334 | && explicit_loc.function_name == NULL | |
335 | && explicit_loc.label_name == NULL | |
336 | && explicit_loc.line_offset.sign == LINE_OFFSET_UNKNOWN) | |
eb8c4e2e KS |
337 | error (_("-%s-insert: --source option requires --function, --label," |
338 | " or --line"), dprintf ? "dprintf" : "break"); | |
339 | ||
67994074 | 340 | location = new_explicit_location (&explicit_loc); |
eb8c4e2e KS |
341 | } |
342 | else | |
343 | { | |
344 | location = string_to_event_location (&address, current_language); | |
345 | if (*address) | |
346 | { | |
347 | delete_event_location (location); | |
348 | error (_("Garbage '%s' at end of location"), address); | |
349 | } | |
350 | } | |
f00aae0f | 351 | |
eb8c4e2e | 352 | make_cleanup_delete_event_location (location); |
f00aae0f KS |
353 | |
354 | create_breakpoint (get_current_arch (), location, condition, thread, | |
c5867ab6 | 355 | extra_string, |
8cdf0e15 | 356 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 357 | temp_p, type_wanted, |
8cdf0e15 VP |
358 | ignore_count, |
359 | pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
19ca11c5 | 360 | ops, 0, enabled, 0, 0); |
8cdf0e15 | 361 | do_cleanups (back_to); |
c5867ab6 HZ |
362 | } |
363 | ||
364 | /* Implements the -break-insert command. | |
365 | See the MI manual for the list of possible options. */ | |
8cdf0e15 | 366 | |
c5867ab6 HZ |
367 | void |
368 | mi_cmd_break_insert (char *command, char **argv, int argc) | |
369 | { | |
370 | mi_cmd_break_insert_1 (0, command, argv, argc); | |
371 | } | |
372 | ||
373 | /* Implements the -dprintf-insert command. | |
374 | See the MI manual for the list of possible options. */ | |
375 | ||
376 | void | |
377 | mi_cmd_dprintf_insert (char *command, char **argv, int argc) | |
378 | { | |
379 | mi_cmd_break_insert_1 (1, command, argv, argc); | |
fb40c209 AC |
380 | } |
381 | ||
382 | enum wp_type | |
383 | { | |
384 | REG_WP, | |
385 | READ_WP, | |
386 | ACCESS_WP | |
387 | }; | |
388 | ||
9b4c786c VP |
389 | void |
390 | mi_cmd_break_passcount (char *command, char **argv, int argc) | |
391 | { | |
392 | int n; | |
393 | int p; | |
d9b3f62e | 394 | struct tracepoint *t; |
9b4c786c VP |
395 | |
396 | if (argc != 2) | |
397 | error (_("Usage: tracepoint-number passcount")); | |
398 | ||
399 | n = atoi (argv[0]); | |
400 | p = atoi (argv[1]); | |
401 | t = get_tracepoint (n); | |
402 | ||
403 | if (t) | |
404 | { | |
405 | t->pass_count = p; | |
6f6484cd | 406 | observer_notify_breakpoint_modified (&t->base); |
9b4c786c VP |
407 | } |
408 | else | |
409 | { | |
401a70b8 | 410 | error (_("Could not find tracepoint %d"), n); |
9b4c786c VP |
411 | } |
412 | } | |
413 | ||
fb40c209 AC |
414 | /* Insert a watchpoint. The type of watchpoint is specified by the |
415 | first argument: | |
416 | -break-watch <expr> --> insert a regular wp. | |
417 | -break-watch -r <expr> --> insert a read watchpoint. | |
2b03b41d | 418 | -break-watch -a <expr> --> insert an access wp. */ |
fb40c209 | 419 | |
ce8f13f8 | 420 | void |
fb40c209 AC |
421 | mi_cmd_break_watch (char *command, char **argv, int argc) |
422 | { | |
423 | char *expr = NULL; | |
424 | enum wp_type type = REG_WP; | |
425 | enum opt | |
426 | { | |
427 | READ_OPT, ACCESS_OPT | |
428 | }; | |
91174723 | 429 | static const struct mi_opt opts[] = |
fb40c209 AC |
430 | { |
431 | {"r", READ_OPT, 0}, | |
432 | {"a", ACCESS_OPT, 0}, | |
d5d6fca5 | 433 | { 0, 0, 0 } |
fb40c209 AC |
434 | }; |
435 | ||
436 | /* Parse arguments. */ | |
f8c000a2 AS |
437 | int oind = 0; |
438 | char *oarg; | |
102040f0 | 439 | |
fb40c209 AC |
440 | while (1) |
441 | { | |
1b05df00 | 442 | int opt = mi_getopt ("-break-watch", argc, argv, |
f8c000a2 | 443 | opts, &oind, &oarg); |
102040f0 | 444 | |
fb40c209 AC |
445 | if (opt < 0) |
446 | break; | |
447 | switch ((enum opt) opt) | |
448 | { | |
449 | case READ_OPT: | |
450 | type = READ_WP; | |
451 | break; | |
452 | case ACCESS_OPT: | |
453 | type = ACCESS_WP; | |
454 | break; | |
455 | } | |
456 | } | |
f8c000a2 | 457 | if (oind >= argc) |
1b05df00 | 458 | error (_("-break-watch: Missing <expression>")); |
f8c000a2 | 459 | if (oind < argc - 1) |
1b05df00 | 460 | error (_("-break-watch: Garbage following <expression>")); |
f8c000a2 | 461 | expr = argv[oind]; |
fb40c209 | 462 | |
2b03b41d | 463 | /* Now we have what we need, let's insert the watchpoint! */ |
fb40c209 AC |
464 | switch (type) |
465 | { | |
466 | case REG_WP: | |
84f4c1fe | 467 | watch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
468 | break; |
469 | case READ_WP: | |
84f4c1fe | 470 | rwatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
471 | break; |
472 | case ACCESS_WP: | |
84f4c1fe | 473 | awatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
474 | break; |
475 | default: | |
1b05df00 | 476 | error (_("-break-watch: Unknown watchpoint type.")); |
fb40c209 | 477 | } |
fb40c209 | 478 | } |
48cb2d85 VP |
479 | |
480 | /* The mi_read_next_line consults these variable to return successive | |
481 | command lines. While it would be clearer to use a closure pointer, | |
482 | it is not expected that any future code will use read_command_lines_1, | |
483 | therefore no point of overengineering. */ | |
484 | ||
485 | static char **mi_command_line_array; | |
486 | static int mi_command_line_array_cnt; | |
487 | static int mi_command_line_array_ptr; | |
488 | ||
489 | static char * | |
a58d7472 | 490 | mi_read_next_line (void) |
48cb2d85 VP |
491 | { |
492 | if (mi_command_line_array_ptr == mi_command_line_array_cnt) | |
493 | return NULL; | |
494 | else | |
495 | return mi_command_line_array[mi_command_line_array_ptr++]; | |
496 | } | |
497 | ||
498 | void | |
499 | mi_cmd_break_commands (char *command, char **argv, int argc) | |
500 | { | |
501 | struct command_line *break_command; | |
502 | char *endptr; | |
503 | int bnum; | |
504 | struct breakpoint *b; | |
505 | ||
506 | if (argc < 1) | |
9b20d036 | 507 | error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command); |
48cb2d85 VP |
508 | |
509 | bnum = strtol (argv[0], &endptr, 0); | |
510 | if (endptr == argv[0]) | |
9b20d036 | 511 | error (_("breakpoint number argument \"%s\" is not a number."), |
48cb2d85 VP |
512 | argv[0]); |
513 | else if (*endptr != '\0') | |
9b20d036 | 514 | error (_("junk at the end of breakpoint number argument \"%s\"."), |
48cb2d85 VP |
515 | argv[0]); |
516 | ||
517 | b = get_breakpoint (bnum); | |
518 | if (b == NULL) | |
9b20d036 | 519 | error (_("breakpoint %d not found."), bnum); |
48cb2d85 VP |
520 | |
521 | mi_command_line_array = argv; | |
522 | mi_command_line_array_ptr = 1; | |
523 | mi_command_line_array_cnt = argc; | |
524 | ||
d77f58be | 525 | if (is_tracepoint (b)) |
a7bdde9e VP |
526 | break_command = read_command_lines_1 (mi_read_next_line, 1, |
527 | check_tracepoint_command, b); | |
528 | else | |
529 | break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0); | |
530 | ||
48cb2d85 VP |
531 | breakpoint_set_commands (b, break_command); |
532 | } | |
533 |