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fb40c209 | 1 | /* MI Command Set - breakpoint and watchpoint commands. |
7b6bb8da | 2 | Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009, 2010, 2011 |
0fb0cc75 | 3 | Free Software Foundation, Inc. |
ab91fdd5 | 4 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 AC |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
fb40c209 AC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
fb40c209 AC |
20 | |
21 | #include "defs.h" | |
a6d9a66e | 22 | #include "arch-utils.h" |
fb40c209 AC |
23 | #include "mi-cmds.h" |
24 | #include "ui-out.h" | |
25 | #include "mi-out.h" | |
26 | #include "breakpoint.h" | |
27 | #include "gdb_string.h" | |
28 | #include "mi-getopt.h" | |
5b7f31a4 | 29 | #include "gdb.h" |
98deb0da | 30 | #include "exceptions.h" |
383f836e | 31 | #include "observer.h" |
8d3788bd | 32 | #include "mi-main.h" |
fb40c209 | 33 | |
fb40c209 AC |
34 | enum |
35 | { | |
36 | FROM_TTY = 0 | |
37 | }; | |
38 | ||
383f836e TT |
39 | /* True if MI breakpoint observers have been registered. */ |
40 | ||
41 | static int mi_breakpoint_observers_installed; | |
42 | ||
43 | /* Control whether breakpoint_notify may act. */ | |
44 | ||
45 | static int mi_can_breakpoint_notify; | |
46 | ||
47 | /* Output a single breakpoint, when allowed. */ | |
fb40c209 AC |
48 | |
49 | static void | |
8d3788bd | 50 | breakpoint_notify (struct breakpoint *b) |
fb40c209 | 51 | { |
383f836e | 52 | if (mi_can_breakpoint_notify) |
79a45e25 | 53 | gdb_breakpoint_query (current_uiout, b->number, NULL); |
fb40c209 AC |
54 | } |
55 | ||
fb40c209 AC |
56 | enum bp_type |
57 | { | |
58 | REG_BP, | |
59 | HW_BP, | |
60 | REGEXP_BP | |
61 | }; | |
62 | ||
afe8ab22 VP |
63 | /* Implements the -break-insert command. |
64 | See the MI manual for the list of possible options. */ | |
fb40c209 | 65 | |
ce8f13f8 | 66 | void |
fb40c209 AC |
67 | mi_cmd_break_insert (char *command, char **argv, int argc) |
68 | { | |
69 | char *address = NULL; | |
8cdf0e15 | 70 | int hardware = 0; |
fb40c209 AC |
71 | int temp_p = 0; |
72 | int thread = -1; | |
73 | int ignore_count = 0; | |
74 | char *condition = NULL; | |
afe8ab22 | 75 | int pending = 0; |
41447f92 | 76 | int enabled = 1; |
6534d786 | 77 | int tracepoint = 0; |
8cdf0e15 | 78 | struct cleanup *back_to; |
0fb4aa4b | 79 | enum bptype type_wanted; |
41447f92 | 80 | |
fb40c209 AC |
81 | enum opt |
82 | { | |
8cdf0e15 | 83 | HARDWARE_OPT, TEMP_OPT, CONDITION_OPT, |
6534d786 VP |
84 | IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT, |
85 | TRACEPOINT_OPT, | |
fb40c209 | 86 | }; |
91174723 | 87 | static const struct mi_opt opts[] = |
fb40c209 AC |
88 | { |
89 | {"h", HARDWARE_OPT, 0}, | |
90 | {"t", TEMP_OPT, 0}, | |
91 | {"c", CONDITION_OPT, 1}, | |
92 | {"i", IGNORE_COUNT_OPT, 1}, | |
93 | {"p", THREAD_OPT, 1}, | |
afe8ab22 | 94 | {"f", PENDING_OPT, 0}, |
41447f92 | 95 | {"d", DISABLE_OPT, 0}, |
6534d786 | 96 | {"a", TRACEPOINT_OPT, 0}, |
d5d6fca5 | 97 | { 0, 0, 0 } |
fb40c209 AC |
98 | }; |
99 | ||
100 | /* Parse arguments. It could be -r or -h or -t, <location> or ``--'' | |
101 | to denote the end of the option list. */ | |
102 | int optind = 0; | |
103 | char *optarg; | |
102040f0 | 104 | |
fb40c209 AC |
105 | while (1) |
106 | { | |
1b05df00 | 107 | int opt = mi_getopt ("-break-insert", argc, argv, |
9a2b4c1b | 108 | opts, &optind, &optarg); |
fb40c209 AC |
109 | if (opt < 0) |
110 | break; | |
111 | switch ((enum opt) opt) | |
112 | { | |
113 | case TEMP_OPT: | |
114 | temp_p = 1; | |
115 | break; | |
116 | case HARDWARE_OPT: | |
8cdf0e15 | 117 | hardware = 1; |
fb40c209 | 118 | break; |
fb40c209 AC |
119 | case CONDITION_OPT: |
120 | condition = optarg; | |
121 | break; | |
122 | case IGNORE_COUNT_OPT: | |
123 | ignore_count = atol (optarg); | |
124 | break; | |
125 | case THREAD_OPT: | |
126 | thread = atol (optarg); | |
127 | break; | |
afe8ab22 VP |
128 | case PENDING_OPT: |
129 | pending = 1; | |
130 | break; | |
41447f92 VP |
131 | case DISABLE_OPT: |
132 | enabled = 0; | |
6534d786 VP |
133 | break; |
134 | case TRACEPOINT_OPT: | |
135 | tracepoint = 1; | |
136 | break; | |
fb40c209 AC |
137 | } |
138 | } | |
139 | ||
140 | if (optind >= argc) | |
1b05df00 | 141 | error (_("-break-insert: Missing <location>")); |
fb40c209 | 142 | if (optind < argc - 1) |
1b05df00 | 143 | error (_("-break-insert: Garbage following <location>")); |
fb40c209 AC |
144 | address = argv[optind]; |
145 | ||
146 | /* Now we have what we need, let's insert the breakpoint! */ | |
383f836e TT |
147 | if (! mi_breakpoint_observers_installed) |
148 | { | |
149 | observer_attach_breakpoint_created (breakpoint_notify); | |
383f836e TT |
150 | mi_breakpoint_observers_installed = 1; |
151 | } | |
152 | ||
8cdf0e15 | 153 | back_to = make_cleanup_restore_integer (&mi_can_breakpoint_notify); |
383f836e | 154 | mi_can_breakpoint_notify = 1; |
0fb4aa4b PA |
155 | |
156 | /* Note that to request a fast tracepoint, the client uses the | |
157 | "hardware" flag, although there's nothing of hardware related to | |
158 | fast tracepoints -- one can implement slow tracepoints with | |
159 | hardware breakpoints, but fast tracepoints are always software. | |
160 | "fast" is a misnomer, actually, "jump" would be more appropriate. | |
161 | A simulator or an emulator could conceivably implement fast | |
162 | regular non-jump based tracepoints. */ | |
163 | type_wanted = (tracepoint | |
164 | ? (hardware ? bp_fast_tracepoint : bp_tracepoint) | |
165 | : (hardware ? bp_hardware_breakpoint : bp_breakpoint)); | |
166 | ||
8cdf0e15 VP |
167 | create_breakpoint (get_current_arch (), address, condition, thread, |
168 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 169 | temp_p, type_wanted, |
8cdf0e15 VP |
170 | ignore_count, |
171 | pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
348d480f | 172 | &bkpt_breakpoint_ops, 0, enabled, 0); |
8cdf0e15 VP |
173 | do_cleanups (back_to); |
174 | ||
fb40c209 AC |
175 | } |
176 | ||
177 | enum wp_type | |
178 | { | |
179 | REG_WP, | |
180 | READ_WP, | |
181 | ACCESS_WP | |
182 | }; | |
183 | ||
9b4c786c VP |
184 | void |
185 | mi_cmd_break_passcount (char *command, char **argv, int argc) | |
186 | { | |
187 | int n; | |
188 | int p; | |
d9b3f62e | 189 | struct tracepoint *t; |
9b4c786c VP |
190 | |
191 | if (argc != 2) | |
192 | error (_("Usage: tracepoint-number passcount")); | |
193 | ||
194 | n = atoi (argv[0]); | |
195 | p = atoi (argv[1]); | |
196 | t = get_tracepoint (n); | |
197 | ||
198 | if (t) | |
199 | { | |
200 | t->pass_count = p; | |
201 | observer_notify_tracepoint_modified (n); | |
202 | } | |
203 | else | |
204 | { | |
401a70b8 | 205 | error (_("Could not find tracepoint %d"), n); |
9b4c786c VP |
206 | } |
207 | } | |
208 | ||
fb40c209 AC |
209 | /* Insert a watchpoint. The type of watchpoint is specified by the |
210 | first argument: | |
211 | -break-watch <expr> --> insert a regular wp. | |
212 | -break-watch -r <expr> --> insert a read watchpoint. | |
213 | -break-watch -a <expr> --> insert an access wp. */ | |
214 | ||
ce8f13f8 | 215 | void |
fb40c209 AC |
216 | mi_cmd_break_watch (char *command, char **argv, int argc) |
217 | { | |
218 | char *expr = NULL; | |
219 | enum wp_type type = REG_WP; | |
220 | enum opt | |
221 | { | |
222 | READ_OPT, ACCESS_OPT | |
223 | }; | |
91174723 | 224 | static const struct mi_opt opts[] = |
fb40c209 AC |
225 | { |
226 | {"r", READ_OPT, 0}, | |
227 | {"a", ACCESS_OPT, 0}, | |
d5d6fca5 | 228 | { 0, 0, 0 } |
fb40c209 AC |
229 | }; |
230 | ||
231 | /* Parse arguments. */ | |
232 | int optind = 0; | |
233 | char *optarg; | |
102040f0 | 234 | |
fb40c209 AC |
235 | while (1) |
236 | { | |
1b05df00 | 237 | int opt = mi_getopt ("-break-watch", argc, argv, |
102040f0 MS |
238 | opts, &optind, &optarg); |
239 | ||
fb40c209 AC |
240 | if (opt < 0) |
241 | break; | |
242 | switch ((enum opt) opt) | |
243 | { | |
244 | case READ_OPT: | |
245 | type = READ_WP; | |
246 | break; | |
247 | case ACCESS_OPT: | |
248 | type = ACCESS_WP; | |
249 | break; | |
250 | } | |
251 | } | |
252 | if (optind >= argc) | |
1b05df00 | 253 | error (_("-break-watch: Missing <expression>")); |
fb40c209 | 254 | if (optind < argc - 1) |
1b05df00 | 255 | error (_("-break-watch: Garbage following <expression>")); |
fb40c209 AC |
256 | expr = argv[optind]; |
257 | ||
258 | /* Now we have what we need, let's insert the watchpoint! */ | |
259 | switch (type) | |
260 | { | |
261 | case REG_WP: | |
84f4c1fe | 262 | watch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
263 | break; |
264 | case READ_WP: | |
84f4c1fe | 265 | rwatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
266 | break; |
267 | case ACCESS_WP: | |
84f4c1fe | 268 | awatch_command_wrapper (expr, FROM_TTY, 0); |
fb40c209 AC |
269 | break; |
270 | default: | |
1b05df00 | 271 | error (_("-break-watch: Unknown watchpoint type.")); |
fb40c209 | 272 | } |
fb40c209 | 273 | } |
48cb2d85 VP |
274 | |
275 | /* The mi_read_next_line consults these variable to return successive | |
276 | command lines. While it would be clearer to use a closure pointer, | |
277 | it is not expected that any future code will use read_command_lines_1, | |
278 | therefore no point of overengineering. */ | |
279 | ||
280 | static char **mi_command_line_array; | |
281 | static int mi_command_line_array_cnt; | |
282 | static int mi_command_line_array_ptr; | |
283 | ||
284 | static char * | |
a58d7472 | 285 | mi_read_next_line (void) |
48cb2d85 VP |
286 | { |
287 | if (mi_command_line_array_ptr == mi_command_line_array_cnt) | |
288 | return NULL; | |
289 | else | |
290 | return mi_command_line_array[mi_command_line_array_ptr++]; | |
291 | } | |
292 | ||
293 | void | |
294 | mi_cmd_break_commands (char *command, char **argv, int argc) | |
295 | { | |
296 | struct command_line *break_command; | |
297 | char *endptr; | |
298 | int bnum; | |
299 | struct breakpoint *b; | |
300 | ||
301 | if (argc < 1) | |
9b20d036 | 302 | error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command); |
48cb2d85 VP |
303 | |
304 | bnum = strtol (argv[0], &endptr, 0); | |
305 | if (endptr == argv[0]) | |
9b20d036 | 306 | error (_("breakpoint number argument \"%s\" is not a number."), |
48cb2d85 VP |
307 | argv[0]); |
308 | else if (*endptr != '\0') | |
9b20d036 | 309 | error (_("junk at the end of breakpoint number argument \"%s\"."), |
48cb2d85 VP |
310 | argv[0]); |
311 | ||
312 | b = get_breakpoint (bnum); | |
313 | if (b == NULL) | |
9b20d036 | 314 | error (_("breakpoint %d not found."), bnum); |
48cb2d85 VP |
315 | |
316 | mi_command_line_array = argv; | |
317 | mi_command_line_array_ptr = 1; | |
318 | mi_command_line_array_cnt = argc; | |
319 | ||
d77f58be | 320 | if (is_tracepoint (b)) |
a7bdde9e VP |
321 | break_command = read_command_lines_1 (mi_read_next_line, 1, |
322 | check_tracepoint_command, b); | |
323 | else | |
324 | break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0); | |
325 | ||
48cb2d85 VP |
326 | breakpoint_set_commands (b, break_command); |
327 | } | |
328 |