Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - breakpoint and watchpoint commands. |
61baf725 | 2 | Copyright (C) 2000-2017 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 | 66 | /* Arrange for all new breakpoints and catchpoints to be reported to |
00f675ff TT |
67 | CURRENT_UIOUT until the destructor of the returned scoped_restore |
68 | is run. | |
91985142 MG |
69 | |
70 | Note that MI output will be probably invalid if more than one | |
71 | breakpoint is created inside one MI command. */ | |
72 | ||
00f675ff | 73 | scoped_restore_tmpl<int> |
91985142 MG |
74 | setup_breakpoint_reporting (void) |
75 | { | |
91985142 MG |
76 | if (! mi_breakpoint_observers_installed) |
77 | { | |
78 | observer_attach_breakpoint_created (breakpoint_notify); | |
79 | mi_breakpoint_observers_installed = 1; | |
80 | } | |
81 | ||
00f675ff | 82 | return make_scoped_restore (&mi_can_breakpoint_notify, 1); |
91985142 MG |
83 | } |
84 | ||
85 | ||
c5867ab6 HZ |
86 | /* Convert arguments in ARGV to the string in "format",argv,argv... |
87 | and return it. */ | |
fb40c209 | 88 | |
784c453a | 89 | static std::string |
c5867ab6 HZ |
90 | mi_argv_to_format (char **argv, int argc) |
91 | { | |
92 | int i; | |
784c453a | 93 | std::string result; |
c5867ab6 HZ |
94 | |
95 | /* Convert ARGV[OIND + 1] to format string and save to FORMAT. */ | |
784c453a | 96 | result += '\"'; |
c5867ab6 HZ |
97 | for (i = 0; i < strlen (argv[0]); i++) |
98 | { | |
99 | switch (argv[0][i]) | |
100 | { | |
101 | case '\\': | |
784c453a | 102 | result += "\\\\"; |
c5867ab6 HZ |
103 | break; |
104 | case '\a': | |
784c453a | 105 | result += "\\a"; |
c5867ab6 HZ |
106 | break; |
107 | case '\b': | |
784c453a | 108 | result += "\\b"; |
c5867ab6 HZ |
109 | break; |
110 | case '\f': | |
784c453a | 111 | result += "\\f"; |
c5867ab6 HZ |
112 | break; |
113 | case '\n': | |
784c453a | 114 | result += "\\n"; |
c5867ab6 HZ |
115 | break; |
116 | case '\r': | |
784c453a | 117 | result += "\\r"; |
c5867ab6 HZ |
118 | break; |
119 | case '\t': | |
784c453a | 120 | result += "\\t"; |
c5867ab6 HZ |
121 | break; |
122 | case '\v': | |
784c453a | 123 | result += "\\v"; |
c5867ab6 | 124 | break; |
fa876972 | 125 | case '"': |
784c453a | 126 | result += "\\\""; |
fa876972 | 127 | break; |
c5867ab6 HZ |
128 | default: |
129 | if (isprint (argv[0][i])) | |
784c453a | 130 | result += argv[0][i]; |
c5867ab6 HZ |
131 | else |
132 | { | |
133 | char tmp[5]; | |
134 | ||
ce70887a JB |
135 | xsnprintf (tmp, sizeof (tmp), "\\%o", |
136 | (unsigned char) argv[0][i]); | |
784c453a | 137 | result += tmp; |
c5867ab6 HZ |
138 | } |
139 | break; | |
140 | } | |
141 | } | |
784c453a | 142 | result += '\"'; |
c5867ab6 HZ |
143 | |
144 | /* Apply other argv to FORMAT. */ | |
145 | for (i = 1; i < argc; i++) | |
146 | { | |
784c453a TT |
147 | result += ','; |
148 | result += argv[i]; | |
c5867ab6 | 149 | } |
c5867ab6 | 150 | |
784c453a | 151 | return result; |
c5867ab6 HZ |
152 | } |
153 | ||
154 | /* Insert breakpoint. | |
155 | If dprintf is true, it will insert dprintf. | |
156 | If not, it will insert other type breakpoint. */ | |
157 | ||
158 | static void | |
9f33b8b7 | 159 | mi_cmd_break_insert_1 (int dprintf, const char *command, char **argv, int argc) |
fb40c209 | 160 | { |
f2fc3015 | 161 | const char *address = NULL; |
8cdf0e15 | 162 | int hardware = 0; |
fb40c209 AC |
163 | int temp_p = 0; |
164 | int thread = -1; | |
165 | int ignore_count = 0; | |
166 | char *condition = NULL; | |
afe8ab22 | 167 | int pending = 0; |
41447f92 | 168 | int enabled = 1; |
6534d786 | 169 | int tracepoint = 0; |
0fb4aa4b | 170 | enum bptype type_wanted; |
ffc2605c | 171 | event_location_up location; |
19ca11c5 | 172 | struct breakpoint_ops *ops; |
eb8c4e2e | 173 | int is_explicit = 0; |
67994074 | 174 | struct explicit_location explicit_loc; |
784c453a | 175 | std::string extra_string; |
41447f92 | 176 | |
fb40c209 AC |
177 | enum opt |
178 | { | |
8cdf0e15 | 179 | HARDWARE_OPT, TEMP_OPT, CONDITION_OPT, |
6534d786 VP |
180 | IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT, |
181 | TRACEPOINT_OPT, | |
eb8c4e2e KS |
182 | EXPLICIT_SOURCE_OPT, EXPLICIT_FUNC_OPT, |
183 | EXPLICIT_LABEL_OPT, EXPLICIT_LINE_OPT | |
fb40c209 | 184 | }; |
91174723 | 185 | static const struct mi_opt opts[] = |
fb40c209 AC |
186 | { |
187 | {"h", HARDWARE_OPT, 0}, | |
188 | {"t", TEMP_OPT, 0}, | |
189 | {"c", CONDITION_OPT, 1}, | |
190 | {"i", IGNORE_COUNT_OPT, 1}, | |
191 | {"p", THREAD_OPT, 1}, | |
afe8ab22 | 192 | {"f", PENDING_OPT, 0}, |
41447f92 | 193 | {"d", DISABLE_OPT, 0}, |
6534d786 | 194 | {"a", TRACEPOINT_OPT, 0}, |
eb8c4e2e KS |
195 | {"-source" , EXPLICIT_SOURCE_OPT, 1}, |
196 | {"-function", EXPLICIT_FUNC_OPT, 1}, | |
197 | {"-label", EXPLICIT_LABEL_OPT, 1}, | |
198 | {"-line", EXPLICIT_LINE_OPT, 1}, | |
d5d6fca5 | 199 | { 0, 0, 0 } |
fb40c209 AC |
200 | }; |
201 | ||
202 | /* Parse arguments. It could be -r or -h or -t, <location> or ``--'' | |
203 | to denote the end of the option list. */ | |
f8c000a2 AS |
204 | int oind = 0; |
205 | char *oarg; | |
102040f0 | 206 | |
67994074 | 207 | initialize_explicit_location (&explicit_loc); |
eb8c4e2e | 208 | |
fb40c209 AC |
209 | while (1) |
210 | { | |
1b05df00 | 211 | int opt = mi_getopt ("-break-insert", argc, argv, |
f8c000a2 | 212 | opts, &oind, &oarg); |
fb40c209 AC |
213 | if (opt < 0) |
214 | break; | |
215 | switch ((enum opt) opt) | |
216 | { | |
217 | case TEMP_OPT: | |
218 | temp_p = 1; | |
219 | break; | |
220 | case HARDWARE_OPT: | |
8cdf0e15 | 221 | hardware = 1; |
fb40c209 | 222 | break; |
fb40c209 | 223 | case CONDITION_OPT: |
f8c000a2 | 224 | condition = oarg; |
fb40c209 AC |
225 | break; |
226 | case IGNORE_COUNT_OPT: | |
f8c000a2 | 227 | ignore_count = atol (oarg); |
fb40c209 AC |
228 | break; |
229 | case THREAD_OPT: | |
f8c000a2 | 230 | thread = atol (oarg); |
fb40c209 | 231 | break; |
afe8ab22 VP |
232 | case PENDING_OPT: |
233 | pending = 1; | |
234 | break; | |
41447f92 VP |
235 | case DISABLE_OPT: |
236 | enabled = 0; | |
6534d786 VP |
237 | break; |
238 | case TRACEPOINT_OPT: | |
239 | tracepoint = 1; | |
240 | break; | |
eb8c4e2e KS |
241 | case EXPLICIT_SOURCE_OPT: |
242 | is_explicit = 1; | |
67994074 | 243 | explicit_loc.source_filename = oarg; |
eb8c4e2e KS |
244 | break; |
245 | case EXPLICIT_FUNC_OPT: | |
246 | is_explicit = 1; | |
67994074 | 247 | explicit_loc.function_name = oarg; |
eb8c4e2e KS |
248 | break; |
249 | case EXPLICIT_LABEL_OPT: | |
250 | is_explicit = 1; | |
67994074 | 251 | explicit_loc.label_name = oarg; |
eb8c4e2e KS |
252 | break; |
253 | case EXPLICIT_LINE_OPT: | |
254 | is_explicit = 1; | |
67994074 | 255 | explicit_loc.line_offset = linespec_parse_line_offset (oarg); |
eb8c4e2e | 256 | break; |
fb40c209 AC |
257 | } |
258 | } | |
259 | ||
eb8c4e2e | 260 | if (oind >= argc && !is_explicit) |
c5867ab6 HZ |
261 | error (_("-%s-insert: Missing <location>"), |
262 | dprintf ? "dprintf" : "break"); | |
c5867ab6 HZ |
263 | if (dprintf) |
264 | { | |
eb8c4e2e | 265 | int format_num = is_explicit ? oind : oind + 1; |
c5867ab6 HZ |
266 | |
267 | if (hardware || tracepoint) | |
268 | error (_("-dprintf-insert: does not support -h or -a")); | |
269 | if (format_num >= argc) | |
270 | error (_("-dprintf-insert: Missing <format>")); | |
271 | ||
272 | extra_string = mi_argv_to_format (argv + format_num, argc - format_num); | |
eb8c4e2e | 273 | address = argv[oind]; |
c5867ab6 HZ |
274 | } |
275 | else | |
276 | { | |
eb8c4e2e KS |
277 | if (is_explicit) |
278 | { | |
279 | if (oind < argc) | |
280 | error (_("-break-insert: Garbage following explicit location")); | |
281 | } | |
282 | else | |
283 | { | |
284 | if (oind < argc - 1) | |
285 | error (_("-break-insert: Garbage following <location>")); | |
286 | address = argv[oind]; | |
287 | } | |
c5867ab6 | 288 | } |
fb40c209 | 289 | |
2b03b41d | 290 | /* Now we have what we need, let's insert the breakpoint! */ |
00f675ff | 291 | scoped_restore restore_breakpoint_reporting = setup_breakpoint_reporting (); |
c5867ab6 HZ |
292 | |
293 | if (tracepoint) | |
294 | { | |
295 | /* Note that to request a fast tracepoint, the client uses the | |
296 | "hardware" flag, although there's nothing of hardware related to | |
297 | fast tracepoints -- one can implement slow tracepoints with | |
298 | hardware breakpoints, but fast tracepoints are always software. | |
299 | "fast" is a misnomer, actually, "jump" would be more appropriate. | |
300 | A simulator or an emulator could conceivably implement fast | |
301 | regular non-jump based tracepoints. */ | |
302 | type_wanted = hardware ? bp_fast_tracepoint : bp_tracepoint; | |
303 | ops = &tracepoint_breakpoint_ops; | |
304 | } | |
305 | else if (dprintf) | |
306 | { | |
307 | type_wanted = bp_dprintf; | |
308 | ops = &dprintf_breakpoint_ops; | |
309 | } | |
310 | else | |
311 | { | |
312 | type_wanted = hardware ? bp_hardware_breakpoint : bp_breakpoint; | |
313 | ops = &bkpt_breakpoint_ops; | |
314 | } | |
0fb4aa4b | 315 | |
eb8c4e2e KS |
316 | if (is_explicit) |
317 | { | |
318 | /* Error check -- we must have one of the other | |
319 | parameters specified. */ | |
67994074 KS |
320 | if (explicit_loc.source_filename != NULL |
321 | && explicit_loc.function_name == NULL | |
322 | && explicit_loc.label_name == NULL | |
323 | && explicit_loc.line_offset.sign == LINE_OFFSET_UNKNOWN) | |
eb8c4e2e KS |
324 | error (_("-%s-insert: --source option requires --function, --label," |
325 | " or --line"), dprintf ? "dprintf" : "break"); | |
326 | ||
67994074 | 327 | location = new_explicit_location (&explicit_loc); |
eb8c4e2e KS |
328 | } |
329 | else | |
330 | { | |
39a67dc4 | 331 | location = string_to_event_location_basic (&address, current_language); |
eb8c4e2e | 332 | if (*address) |
ffc2605c | 333 | error (_("Garbage '%s' at end of location"), address); |
eb8c4e2e | 334 | } |
f00aae0f | 335 | |
ffc2605c | 336 | create_breakpoint (get_current_arch (), location.get (), condition, thread, |
784c453a | 337 | extra_string.c_str (), |
8cdf0e15 | 338 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 339 | temp_p, type_wanted, |
8cdf0e15 VP |
340 | ignore_count, |
341 | pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
19ca11c5 | 342 | ops, 0, enabled, 0, 0); |
c5867ab6 HZ |
343 | } |
344 | ||
345 | /* Implements the -break-insert command. | |
346 | See the MI manual for the list of possible options. */ | |
8cdf0e15 | 347 | |
c5867ab6 | 348 | void |
9f33b8b7 | 349 | mi_cmd_break_insert (const char *command, char **argv, int argc) |
c5867ab6 HZ |
350 | { |
351 | mi_cmd_break_insert_1 (0, command, argv, argc); | |
352 | } | |
353 | ||
354 | /* Implements the -dprintf-insert command. | |
355 | See the MI manual for the list of possible options. */ | |
356 | ||
357 | void | |
9f33b8b7 | 358 | mi_cmd_dprintf_insert (const char *command, char **argv, int argc) |
c5867ab6 HZ |
359 | { |
360 | mi_cmd_break_insert_1 (1, command, argv, argc); | |
fb40c209 AC |
361 | } |
362 | ||
363 | enum wp_type | |
364 | { | |
365 | REG_WP, | |
366 | READ_WP, | |
367 | ACCESS_WP | |
368 | }; | |
369 | ||
9b4c786c | 370 | void |
9f33b8b7 | 371 | mi_cmd_break_passcount (const char *command, char **argv, int argc) |
9b4c786c VP |
372 | { |
373 | int n; | |
374 | int p; | |
d9b3f62e | 375 | struct tracepoint *t; |
9b4c786c VP |
376 | |
377 | if (argc != 2) | |
378 | error (_("Usage: tracepoint-number passcount")); | |
379 | ||
380 | n = atoi (argv[0]); | |
381 | p = atoi (argv[1]); | |
382 | t = get_tracepoint (n); | |
383 | ||
384 | if (t) | |
385 | { | |
386 | t->pass_count = p; | |
c1fc2657 | 387 | observer_notify_breakpoint_modified (t); |
9b4c786c VP |
388 | } |
389 | else | |
390 | { | |
401a70b8 | 391 | error (_("Could not find tracepoint %d"), n); |
9b4c786c VP |
392 | } |
393 | } | |
394 | ||
fb40c209 AC |
395 | /* Insert a watchpoint. The type of watchpoint is specified by the |
396 | first argument: | |
397 | -break-watch <expr> --> insert a regular wp. | |
398 | -break-watch -r <expr> --> insert a read watchpoint. | |
2b03b41d | 399 | -break-watch -a <expr> --> insert an access wp. */ |
fb40c209 | 400 | |
ce8f13f8 | 401 | void |
9f33b8b7 | 402 | mi_cmd_break_watch (const char *command, char **argv, int argc) |
fb40c209 AC |
403 | { |
404 | char *expr = NULL; | |
405 | enum wp_type type = REG_WP; | |
406 | enum opt | |
407 | { | |
408 | READ_OPT, ACCESS_OPT | |
409 | }; | |
91174723 | 410 | static const struct mi_opt opts[] = |
fb40c209 AC |
411 | { |
412 | {"r", READ_OPT, 0}, | |
413 | {"a", ACCESS_OPT, 0}, | |
d5d6fca5 | 414 | { 0, 0, 0 } |
fb40c209 AC |
415 | }; |
416 | ||
417 | /* Parse arguments. */ | |
f8c000a2 AS |
418 | int oind = 0; |
419 | char *oarg; | |
102040f0 | 420 | |
fb40c209 AC |
421 | while (1) |
422 | { | |
1b05df00 | 423 | int opt = mi_getopt ("-break-watch", argc, argv, |
f8c000a2 | 424 | opts, &oind, &oarg); |
102040f0 | 425 | |
fb40c209 AC |
426 | if (opt < 0) |
427 | break; | |
428 | switch ((enum opt) opt) | |
429 | { | |
430 | case READ_OPT: | |
431 | type = READ_WP; | |
432 | break; | |
433 | case ACCESS_OPT: | |
434 | type = ACCESS_WP; | |
435 | break; | |
436 | } | |
437 | } | |
f8c000a2 | 438 | if (oind >= argc) |
1b05df00 | 439 | error (_("-break-watch: Missing <expression>")); |
f8c000a2 | 440 | if (oind < argc - 1) |
1b05df00 | 441 | error (_("-break-watch: Garbage following <expression>")); |
f8c000a2 | 442 | expr = argv[oind]; |
fb40c209 | 443 | |
2b03b41d | 444 | /* Now we have what we need, let's insert the watchpoint! */ |
fb40c209 AC |
445 | switch (type) |
446 | { | |
447 | case REG_WP: | |
84f4c1fe | 448 | watch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
449 | break; |
450 | case READ_WP: | |
84f4c1fe | 451 | rwatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
452 | break; |
453 | case ACCESS_WP: | |
84f4c1fe | 454 | awatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
455 | break; |
456 | default: | |
1b05df00 | 457 | error (_("-break-watch: Unknown watchpoint type.")); |
fb40c209 | 458 | } |
fb40c209 | 459 | } |
48cb2d85 VP |
460 | |
461 | /* The mi_read_next_line consults these variable to return successive | |
462 | command lines. While it would be clearer to use a closure pointer, | |
463 | it is not expected that any future code will use read_command_lines_1, | |
464 | therefore no point of overengineering. */ | |
465 | ||
466 | static char **mi_command_line_array; | |
467 | static int mi_command_line_array_cnt; | |
468 | static int mi_command_line_array_ptr; | |
469 | ||
470 | static char * | |
a58d7472 | 471 | mi_read_next_line (void) |
48cb2d85 VP |
472 | { |
473 | if (mi_command_line_array_ptr == mi_command_line_array_cnt) | |
474 | return NULL; | |
475 | else | |
476 | return mi_command_line_array[mi_command_line_array_ptr++]; | |
477 | } | |
478 | ||
479 | void | |
9f33b8b7 | 480 | mi_cmd_break_commands (const char *command, char **argv, int argc) |
48cb2d85 | 481 | { |
93921405 | 482 | command_line_up break_command; |
48cb2d85 VP |
483 | char *endptr; |
484 | int bnum; | |
485 | struct breakpoint *b; | |
486 | ||
487 | if (argc < 1) | |
9b20d036 | 488 | error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command); |
48cb2d85 VP |
489 | |
490 | bnum = strtol (argv[0], &endptr, 0); | |
491 | if (endptr == argv[0]) | |
9b20d036 | 492 | error (_("breakpoint number argument \"%s\" is not a number."), |
48cb2d85 VP |
493 | argv[0]); |
494 | else if (*endptr != '\0') | |
9b20d036 | 495 | error (_("junk at the end of breakpoint number argument \"%s\"."), |
48cb2d85 VP |
496 | argv[0]); |
497 | ||
498 | b = get_breakpoint (bnum); | |
499 | if (b == NULL) | |
9b20d036 | 500 | error (_("breakpoint %d not found."), bnum); |
48cb2d85 VP |
501 | |
502 | mi_command_line_array = argv; | |
503 | mi_command_line_array_ptr = 1; | |
504 | mi_command_line_array_cnt = argc; | |
505 | ||
d77f58be | 506 | if (is_tracepoint (b)) |
a7bdde9e VP |
507 | break_command = read_command_lines_1 (mi_read_next_line, 1, |
508 | check_tracepoint_command, b); | |
509 | else | |
510 | break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0); | |
511 | ||
93921405 | 512 | breakpoint_set_commands (b, std::move (break_command)); |
48cb2d85 VP |
513 | } |
514 |