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fb40c209 | 1 | /* MI Command Set - breakpoint and watchpoint commands. |
3666a048 | 2 | Copyright (C) 2000-2021 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" |
76727919 | 27 | #include "observable.h" |
8d3788bd | 28 | #include "mi-main.h" |
91985142 | 29 | #include "mi-cmd-break.h" |
f00aae0f KS |
30 | #include "language.h" |
31 | #include "location.h" | |
32 | #include "linespec.h" | |
c5867ab6 HZ |
33 | #include "gdb_obstack.h" |
34 | #include <ctype.h> | |
60b3cef2 | 35 | #include "tracepoint.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) |
65630365 | 56 | { |
a70b8144 | 57 | try |
65630365 PA |
58 | { |
59 | print_breakpoint (b); | |
60 | } | |
230d2906 | 61 | catch (const gdb_exception &ex) |
65630365 PA |
62 | { |
63 | exception_print (gdb_stderr, ex); | |
64 | } | |
65630365 | 65 | } |
fb40c209 AC |
66 | } |
67 | ||
fb40c209 AC |
68 | enum bp_type |
69 | { | |
70 | REG_BP, | |
71 | HW_BP, | |
72 | REGEXP_BP | |
73 | }; | |
74 | ||
91985142 | 75 | /* Arrange for all new breakpoints and catchpoints to be reported to |
00f675ff TT |
76 | CURRENT_UIOUT until the destructor of the returned scoped_restore |
77 | is run. | |
91985142 MG |
78 | |
79 | Note that MI output will be probably invalid if more than one | |
80 | breakpoint is created inside one MI command. */ | |
81 | ||
00f675ff | 82 | scoped_restore_tmpl<int> |
91985142 MG |
83 | setup_breakpoint_reporting (void) |
84 | { | |
91985142 MG |
85 | if (! mi_breakpoint_observers_installed) |
86 | { | |
c90e7d63 SM |
87 | gdb::observers::breakpoint_created.attach (breakpoint_notify, |
88 | "mi-cmd-break"); | |
91985142 MG |
89 | mi_breakpoint_observers_installed = 1; |
90 | } | |
91 | ||
00f675ff | 92 | return make_scoped_restore (&mi_can_breakpoint_notify, 1); |
91985142 MG |
93 | } |
94 | ||
95 | ||
c5867ab6 HZ |
96 | /* Convert arguments in ARGV to the string in "format",argv,argv... |
97 | and return it. */ | |
fb40c209 | 98 | |
784c453a | 99 | static std::string |
c5867ab6 HZ |
100 | mi_argv_to_format (char **argv, int argc) |
101 | { | |
102 | int i; | |
784c453a | 103 | std::string result; |
c5867ab6 HZ |
104 | |
105 | /* Convert ARGV[OIND + 1] to format string and save to FORMAT. */ | |
784c453a | 106 | result += '\"'; |
c5867ab6 HZ |
107 | for (i = 0; i < strlen (argv[0]); i++) |
108 | { | |
109 | switch (argv[0][i]) | |
110 | { | |
111 | case '\\': | |
784c453a | 112 | result += "\\\\"; |
c5867ab6 HZ |
113 | break; |
114 | case '\a': | |
784c453a | 115 | result += "\\a"; |
c5867ab6 HZ |
116 | break; |
117 | case '\b': | |
784c453a | 118 | result += "\\b"; |
c5867ab6 HZ |
119 | break; |
120 | case '\f': | |
784c453a | 121 | result += "\\f"; |
c5867ab6 HZ |
122 | break; |
123 | case '\n': | |
784c453a | 124 | result += "\\n"; |
c5867ab6 HZ |
125 | break; |
126 | case '\r': | |
784c453a | 127 | result += "\\r"; |
c5867ab6 HZ |
128 | break; |
129 | case '\t': | |
784c453a | 130 | result += "\\t"; |
c5867ab6 HZ |
131 | break; |
132 | case '\v': | |
784c453a | 133 | result += "\\v"; |
c5867ab6 | 134 | break; |
fa876972 | 135 | case '"': |
784c453a | 136 | result += "\\\""; |
fa876972 | 137 | break; |
c5867ab6 HZ |
138 | default: |
139 | if (isprint (argv[0][i])) | |
784c453a | 140 | result += argv[0][i]; |
c5867ab6 HZ |
141 | else |
142 | { | |
143 | char tmp[5]; | |
144 | ||
ce70887a JB |
145 | xsnprintf (tmp, sizeof (tmp), "\\%o", |
146 | (unsigned char) argv[0][i]); | |
784c453a | 147 | result += tmp; |
c5867ab6 HZ |
148 | } |
149 | break; | |
150 | } | |
151 | } | |
784c453a | 152 | result += '\"'; |
c5867ab6 HZ |
153 | |
154 | /* Apply other argv to FORMAT. */ | |
155 | for (i = 1; i < argc; i++) | |
156 | { | |
784c453a TT |
157 | result += ','; |
158 | result += argv[i]; | |
c5867ab6 | 159 | } |
c5867ab6 | 160 | |
784c453a | 161 | return result; |
c5867ab6 HZ |
162 | } |
163 | ||
164 | /* Insert breakpoint. | |
165 | If dprintf is true, it will insert dprintf. | |
166 | If not, it will insert other type breakpoint. */ | |
167 | ||
168 | static void | |
9f33b8b7 | 169 | mi_cmd_break_insert_1 (int dprintf, const char *command, char **argv, int argc) |
fb40c209 | 170 | { |
f2fc3015 | 171 | const char *address = NULL; |
8cdf0e15 | 172 | int hardware = 0; |
fb40c209 AC |
173 | int temp_p = 0; |
174 | int thread = -1; | |
175 | int ignore_count = 0; | |
176 | char *condition = NULL; | |
afe8ab22 | 177 | int pending = 0; |
41447f92 | 178 | int enabled = 1; |
6534d786 | 179 | int tracepoint = 0; |
6791b117 | 180 | symbol_name_match_type match_type = symbol_name_match_type::WILD; |
0fb4aa4b | 181 | enum bptype type_wanted; |
ffc2605c | 182 | event_location_up location; |
19ca11c5 | 183 | struct breakpoint_ops *ops; |
eb8c4e2e | 184 | int is_explicit = 0; |
67994074 | 185 | struct explicit_location explicit_loc; |
784c453a | 186 | std::string extra_string; |
41447f92 | 187 | |
fb40c209 AC |
188 | enum opt |
189 | { | |
8cdf0e15 | 190 | HARDWARE_OPT, TEMP_OPT, CONDITION_OPT, |
6534d786 VP |
191 | IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT, |
192 | TRACEPOINT_OPT, | |
6791b117 | 193 | QUALIFIED_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}, |
6791b117 | 207 | {"-qualified", QUALIFIED_OPT, 0}, |
eb8c4e2e KS |
208 | {"-source" , EXPLICIT_SOURCE_OPT, 1}, |
209 | {"-function", EXPLICIT_FUNC_OPT, 1}, | |
210 | {"-label", EXPLICIT_LABEL_OPT, 1}, | |
211 | {"-line", EXPLICIT_LINE_OPT, 1}, | |
d5d6fca5 | 212 | { 0, 0, 0 } |
fb40c209 AC |
213 | }; |
214 | ||
215 | /* Parse arguments. It could be -r or -h or -t, <location> or ``--'' | |
216 | to denote the end of the option list. */ | |
f8c000a2 AS |
217 | int oind = 0; |
218 | char *oarg; | |
102040f0 | 219 | |
67994074 | 220 | initialize_explicit_location (&explicit_loc); |
eb8c4e2e | 221 | |
fb40c209 AC |
222 | while (1) |
223 | { | |
1b05df00 | 224 | int opt = mi_getopt ("-break-insert", argc, argv, |
f8c000a2 | 225 | opts, &oind, &oarg); |
fb40c209 AC |
226 | if (opt < 0) |
227 | break; | |
228 | switch ((enum opt) opt) | |
229 | { | |
230 | case TEMP_OPT: | |
231 | temp_p = 1; | |
232 | break; | |
233 | case HARDWARE_OPT: | |
8cdf0e15 | 234 | hardware = 1; |
fb40c209 | 235 | break; |
fb40c209 | 236 | case CONDITION_OPT: |
f8c000a2 | 237 | condition = oarg; |
fb40c209 AC |
238 | break; |
239 | case IGNORE_COUNT_OPT: | |
f8c000a2 | 240 | ignore_count = atol (oarg); |
fb40c209 AC |
241 | break; |
242 | case THREAD_OPT: | |
f8c000a2 | 243 | thread = atol (oarg); |
fb40c209 | 244 | break; |
afe8ab22 VP |
245 | case PENDING_OPT: |
246 | pending = 1; | |
247 | break; | |
41447f92 VP |
248 | case DISABLE_OPT: |
249 | enabled = 0; | |
6534d786 VP |
250 | break; |
251 | case TRACEPOINT_OPT: | |
252 | tracepoint = 1; | |
253 | break; | |
6791b117 PA |
254 | case QUALIFIED_OPT: |
255 | match_type = symbol_name_match_type::FULL; | |
256 | break; | |
eb8c4e2e KS |
257 | case EXPLICIT_SOURCE_OPT: |
258 | is_explicit = 1; | |
67994074 | 259 | explicit_loc.source_filename = oarg; |
eb8c4e2e KS |
260 | break; |
261 | case EXPLICIT_FUNC_OPT: | |
262 | is_explicit = 1; | |
67994074 | 263 | explicit_loc.function_name = oarg; |
eb8c4e2e KS |
264 | break; |
265 | case EXPLICIT_LABEL_OPT: | |
266 | is_explicit = 1; | |
67994074 | 267 | explicit_loc.label_name = oarg; |
eb8c4e2e KS |
268 | break; |
269 | case EXPLICIT_LINE_OPT: | |
270 | is_explicit = 1; | |
67994074 | 271 | explicit_loc.line_offset = linespec_parse_line_offset (oarg); |
eb8c4e2e | 272 | break; |
fb40c209 AC |
273 | } |
274 | } | |
275 | ||
eb8c4e2e | 276 | if (oind >= argc && !is_explicit) |
c5867ab6 HZ |
277 | error (_("-%s-insert: Missing <location>"), |
278 | dprintf ? "dprintf" : "break"); | |
c5867ab6 HZ |
279 | if (dprintf) |
280 | { | |
eb8c4e2e | 281 | int format_num = is_explicit ? oind : oind + 1; |
c5867ab6 HZ |
282 | |
283 | if (hardware || tracepoint) | |
284 | error (_("-dprintf-insert: does not support -h or -a")); | |
285 | if (format_num >= argc) | |
286 | error (_("-dprintf-insert: Missing <format>")); | |
287 | ||
288 | extra_string = mi_argv_to_format (argv + format_num, argc - format_num); | |
eb8c4e2e | 289 | address = argv[oind]; |
c5867ab6 HZ |
290 | } |
291 | else | |
292 | { | |
eb8c4e2e KS |
293 | if (is_explicit) |
294 | { | |
295 | if (oind < argc) | |
296 | error (_("-break-insert: Garbage following explicit location")); | |
297 | } | |
298 | else | |
299 | { | |
300 | if (oind < argc - 1) | |
301 | error (_("-break-insert: Garbage following <location>")); | |
302 | address = argv[oind]; | |
303 | } | |
c5867ab6 | 304 | } |
fb40c209 | 305 | |
2b03b41d | 306 | /* Now we have what we need, let's insert the breakpoint! */ |
00f675ff | 307 | scoped_restore restore_breakpoint_reporting = setup_breakpoint_reporting (); |
c5867ab6 HZ |
308 | |
309 | if (tracepoint) | |
310 | { | |
311 | /* Note that to request a fast tracepoint, the client uses the | |
312 | "hardware" flag, although there's nothing of hardware related to | |
313 | fast tracepoints -- one can implement slow tracepoints with | |
314 | hardware breakpoints, but fast tracepoints are always software. | |
315 | "fast" is a misnomer, actually, "jump" would be more appropriate. | |
316 | A simulator or an emulator could conceivably implement fast | |
317 | regular non-jump based tracepoints. */ | |
318 | type_wanted = hardware ? bp_fast_tracepoint : bp_tracepoint; | |
319 | ops = &tracepoint_breakpoint_ops; | |
320 | } | |
321 | else if (dprintf) | |
322 | { | |
323 | type_wanted = bp_dprintf; | |
324 | ops = &dprintf_breakpoint_ops; | |
325 | } | |
326 | else | |
327 | { | |
328 | type_wanted = hardware ? bp_hardware_breakpoint : bp_breakpoint; | |
329 | ops = &bkpt_breakpoint_ops; | |
330 | } | |
0fb4aa4b | 331 | |
eb8c4e2e KS |
332 | if (is_explicit) |
333 | { | |
334 | /* Error check -- we must have one of the other | |
335 | parameters specified. */ | |
67994074 KS |
336 | if (explicit_loc.source_filename != NULL |
337 | && explicit_loc.function_name == NULL | |
338 | && explicit_loc.label_name == NULL | |
339 | && explicit_loc.line_offset.sign == LINE_OFFSET_UNKNOWN) | |
eb8c4e2e KS |
340 | error (_("-%s-insert: --source option requires --function, --label," |
341 | " or --line"), dprintf ? "dprintf" : "break"); | |
342 | ||
6791b117 PA |
343 | explicit_loc.func_name_match_type = match_type; |
344 | ||
67994074 | 345 | location = new_explicit_location (&explicit_loc); |
eb8c4e2e KS |
346 | } |
347 | else | |
348 | { | |
a20714ff | 349 | location = string_to_event_location_basic (&address, current_language, |
6791b117 | 350 | match_type); |
eb8c4e2e | 351 | if (*address) |
ffc2605c | 352 | error (_("Garbage '%s' at end of location"), address); |
eb8c4e2e | 353 | } |
f00aae0f | 354 | |
ffc2605c | 355 | create_breakpoint (get_current_arch (), location.get (), condition, thread, |
784c453a | 356 | extra_string.c_str (), |
10a636cc | 357 | false, |
8cdf0e15 | 358 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 359 | temp_p, type_wanted, |
8cdf0e15 VP |
360 | ignore_count, |
361 | pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
19ca11c5 | 362 | ops, 0, enabled, 0, 0); |
c5867ab6 HZ |
363 | } |
364 | ||
365 | /* Implements the -break-insert command. | |
366 | See the MI manual for the list of possible options. */ | |
8cdf0e15 | 367 | |
c5867ab6 | 368 | void |
9f33b8b7 | 369 | mi_cmd_break_insert (const char *command, char **argv, int argc) |
c5867ab6 HZ |
370 | { |
371 | mi_cmd_break_insert_1 (0, command, argv, argc); | |
372 | } | |
373 | ||
374 | /* Implements the -dprintf-insert command. | |
375 | See the MI manual for the list of possible options. */ | |
376 | ||
377 | void | |
9f33b8b7 | 378 | mi_cmd_dprintf_insert (const char *command, char **argv, int argc) |
c5867ab6 HZ |
379 | { |
380 | mi_cmd_break_insert_1 (1, command, argv, argc); | |
fb40c209 AC |
381 | } |
382 | ||
383 | enum wp_type | |
384 | { | |
385 | REG_WP, | |
386 | READ_WP, | |
387 | ACCESS_WP | |
388 | }; | |
389 | ||
9b4c786c | 390 | void |
9f33b8b7 | 391 | mi_cmd_break_passcount (const char *command, char **argv, int argc) |
9b4c786c VP |
392 | { |
393 | int n; | |
394 | int p; | |
d9b3f62e | 395 | struct tracepoint *t; |
9b4c786c VP |
396 | |
397 | if (argc != 2) | |
398 | error (_("Usage: tracepoint-number passcount")); | |
399 | ||
400 | n = atoi (argv[0]); | |
401 | p = atoi (argv[1]); | |
402 | t = get_tracepoint (n); | |
403 | ||
404 | if (t) | |
405 | { | |
406 | t->pass_count = p; | |
76727919 | 407 | gdb::observers::breakpoint_modified.notify (t); |
9b4c786c VP |
408 | } |
409 | else | |
410 | { | |
401a70b8 | 411 | error (_("Could not find tracepoint %d"), n); |
9b4c786c VP |
412 | } |
413 | } | |
414 | ||
fb40c209 AC |
415 | /* Insert a watchpoint. The type of watchpoint is specified by the |
416 | first argument: | |
417 | -break-watch <expr> --> insert a regular wp. | |
418 | -break-watch -r <expr> --> insert a read watchpoint. | |
2b03b41d | 419 | -break-watch -a <expr> --> insert an access wp. */ |
fb40c209 | 420 | |
ce8f13f8 | 421 | void |
9f33b8b7 | 422 | mi_cmd_break_watch (const char *command, char **argv, int argc) |
fb40c209 AC |
423 | { |
424 | char *expr = NULL; | |
425 | enum wp_type type = REG_WP; | |
426 | enum opt | |
427 | { | |
428 | READ_OPT, ACCESS_OPT | |
429 | }; | |
91174723 | 430 | static const struct mi_opt opts[] = |
fb40c209 AC |
431 | { |
432 | {"r", READ_OPT, 0}, | |
433 | {"a", ACCESS_OPT, 0}, | |
d5d6fca5 | 434 | { 0, 0, 0 } |
fb40c209 AC |
435 | }; |
436 | ||
437 | /* Parse arguments. */ | |
f8c000a2 AS |
438 | int oind = 0; |
439 | char *oarg; | |
102040f0 | 440 | |
fb40c209 AC |
441 | while (1) |
442 | { | |
1b05df00 | 443 | int opt = mi_getopt ("-break-watch", argc, argv, |
f8c000a2 | 444 | opts, &oind, &oarg); |
102040f0 | 445 | |
fb40c209 AC |
446 | if (opt < 0) |
447 | break; | |
448 | switch ((enum opt) opt) | |
449 | { | |
450 | case READ_OPT: | |
451 | type = READ_WP; | |
452 | break; | |
453 | case ACCESS_OPT: | |
454 | type = ACCESS_WP; | |
455 | break; | |
456 | } | |
457 | } | |
f8c000a2 | 458 | if (oind >= argc) |
1b05df00 | 459 | error (_("-break-watch: Missing <expression>")); |
f8c000a2 | 460 | if (oind < argc - 1) |
1b05df00 | 461 | error (_("-break-watch: Garbage following <expression>")); |
f8c000a2 | 462 | expr = argv[oind]; |
fb40c209 | 463 | |
2b03b41d | 464 | /* Now we have what we need, let's insert the watchpoint! */ |
fb40c209 AC |
465 | switch (type) |
466 | { | |
467 | case REG_WP: | |
2e362716 | 468 | watch_command_wrapper (expr, FROM_TTY, false); |
fb40c209 AC |
469 | break; |
470 | case READ_WP: | |
2e362716 | 471 | rwatch_command_wrapper (expr, FROM_TTY, false); |
fb40c209 AC |
472 | break; |
473 | case ACCESS_WP: | |
2e362716 | 474 | awatch_command_wrapper (expr, FROM_TTY, false); |
fb40c209 AC |
475 | break; |
476 | default: | |
1b05df00 | 477 | error (_("-break-watch: Unknown watchpoint type.")); |
fb40c209 | 478 | } |
fb40c209 | 479 | } |
48cb2d85 | 480 | |
48cb2d85 | 481 | void |
9f33b8b7 | 482 | mi_cmd_break_commands (const char *command, char **argv, int argc) |
48cb2d85 | 483 | { |
12973681 | 484 | counted_command_line break_command; |
48cb2d85 VP |
485 | char *endptr; |
486 | int bnum; | |
487 | struct breakpoint *b; | |
488 | ||
489 | if (argc < 1) | |
9b20d036 | 490 | error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command); |
48cb2d85 VP |
491 | |
492 | bnum = strtol (argv[0], &endptr, 0); | |
493 | if (endptr == argv[0]) | |
9b20d036 | 494 | error (_("breakpoint number argument \"%s\" is not a number."), |
48cb2d85 VP |
495 | argv[0]); |
496 | else if (*endptr != '\0') | |
9b20d036 | 497 | error (_("junk at the end of breakpoint number argument \"%s\"."), |
48cb2d85 VP |
498 | argv[0]); |
499 | ||
500 | b = get_breakpoint (bnum); | |
501 | if (b == NULL) | |
9b20d036 | 502 | error (_("breakpoint %d not found."), bnum); |
48cb2d85 | 503 | |
60b3cef2 TT |
504 | int count = 1; |
505 | auto reader | |
506 | = [&] () | |
507 | { | |
508 | const char *result = nullptr; | |
509 | if (count < argc) | |
510 | result = argv[count++]; | |
511 | return result; | |
512 | }; | |
48cb2d85 | 513 | |
d77f58be | 514 | if (is_tracepoint (b)) |
60b3cef2 TT |
515 | break_command = read_command_lines_1 (reader, 1, |
516 | [=] (const char *line) | |
517 | { | |
518 | validate_actionline (line, b); | |
519 | }); | |
a7bdde9e | 520 | else |
60b3cef2 | 521 | break_command = read_command_lines_1 (reader, 1, 0); |
a7bdde9e | 522 | |
93921405 | 523 | breakpoint_set_commands (b, std::move (break_command)); |
48cb2d85 VP |
524 | } |
525 |