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fb40c209 | 1 | /* MI Command Set - breakpoint and watchpoint commands. |
4c38e0a4 | 2 | Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009, 2010 |
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" |
fb40c209 | 32 | |
fb40c209 AC |
33 | enum |
34 | { | |
35 | FROM_TTY = 0 | |
36 | }; | |
37 | ||
383f836e TT |
38 | /* True if MI breakpoint observers have been registered. */ |
39 | ||
40 | static int mi_breakpoint_observers_installed; | |
41 | ||
42 | /* Control whether breakpoint_notify may act. */ | |
43 | ||
44 | static int mi_can_breakpoint_notify; | |
45 | ||
46 | /* Output a single breakpoint, when allowed. */ | |
fb40c209 AC |
47 | |
48 | static void | |
49 | breakpoint_notify (int b) | |
50 | { | |
383f836e TT |
51 | if (mi_can_breakpoint_notify) |
52 | gdb_breakpoint_query (uiout, b, NULL); | |
fb40c209 AC |
53 | } |
54 | ||
fb40c209 AC |
55 | enum bp_type |
56 | { | |
57 | REG_BP, | |
58 | HW_BP, | |
59 | REGEXP_BP | |
60 | }; | |
61 | ||
afe8ab22 VP |
62 | /* Implements the -break-insert command. |
63 | See the MI manual for the list of possible options. */ | |
fb40c209 | 64 | |
ce8f13f8 | 65 | void |
fb40c209 AC |
66 | mi_cmd_break_insert (char *command, char **argv, int argc) |
67 | { | |
68 | char *address = NULL; | |
69 | enum bp_type type = REG_BP; | |
70 | int temp_p = 0; | |
71 | int thread = -1; | |
72 | int ignore_count = 0; | |
73 | char *condition = NULL; | |
afe8ab22 | 74 | int pending = 0; |
41447f92 VP |
75 | int enabled = 1; |
76 | ||
98deb0da | 77 | struct gdb_exception e; |
fb40c209 AC |
78 | struct gdb_events *old_hooks; |
79 | enum opt | |
80 | { | |
81 | HARDWARE_OPT, TEMP_OPT /*, REGEXP_OPT */ , CONDITION_OPT, | |
41447f92 | 82 | IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT |
fb40c209 AC |
83 | }; |
84 | static struct mi_opt opts[] = | |
85 | { | |
86 | {"h", HARDWARE_OPT, 0}, | |
87 | {"t", TEMP_OPT, 0}, | |
88 | {"c", CONDITION_OPT, 1}, | |
89 | {"i", IGNORE_COUNT_OPT, 1}, | |
90 | {"p", THREAD_OPT, 1}, | |
afe8ab22 | 91 | {"f", PENDING_OPT, 0}, |
41447f92 | 92 | {"d", DISABLE_OPT, 0}, |
d5d6fca5 | 93 | { 0, 0, 0 } |
fb40c209 AC |
94 | }; |
95 | ||
96 | /* Parse arguments. It could be -r or -h or -t, <location> or ``--'' | |
97 | to denote the end of the option list. */ | |
98 | int optind = 0; | |
99 | char *optarg; | |
100 | while (1) | |
101 | { | |
102 | int opt = mi_getopt ("mi_cmd_break_insert", argc, argv, opts, &optind, &optarg); | |
103 | if (opt < 0) | |
104 | break; | |
105 | switch ((enum opt) opt) | |
106 | { | |
107 | case TEMP_OPT: | |
108 | temp_p = 1; | |
109 | break; | |
110 | case HARDWARE_OPT: | |
111 | type = HW_BP; | |
112 | break; | |
113 | #if 0 | |
114 | case REGEXP_OPT: | |
115 | type = REGEXP_BP; | |
116 | break; | |
117 | #endif | |
118 | case CONDITION_OPT: | |
119 | condition = optarg; | |
120 | break; | |
121 | case IGNORE_COUNT_OPT: | |
122 | ignore_count = atol (optarg); | |
123 | break; | |
124 | case THREAD_OPT: | |
125 | thread = atol (optarg); | |
126 | break; | |
afe8ab22 VP |
127 | case PENDING_OPT: |
128 | pending = 1; | |
129 | break; | |
41447f92 VP |
130 | case DISABLE_OPT: |
131 | enabled = 0; | |
fb40c209 AC |
132 | } |
133 | } | |
134 | ||
135 | if (optind >= argc) | |
8a3fe4f8 | 136 | error (_("mi_cmd_break_insert: Missing <location>")); |
fb40c209 | 137 | if (optind < argc - 1) |
8a3fe4f8 | 138 | error (_("mi_cmd_break_insert: Garbage following <location>")); |
fb40c209 AC |
139 | address = argv[optind]; |
140 | ||
141 | /* Now we have what we need, let's insert the breakpoint! */ | |
383f836e TT |
142 | if (! mi_breakpoint_observers_installed) |
143 | { | |
144 | observer_attach_breakpoint_created (breakpoint_notify); | |
145 | observer_attach_breakpoint_modified (breakpoint_notify); | |
146 | observer_attach_breakpoint_deleted (breakpoint_notify); | |
147 | mi_breakpoint_observers_installed = 1; | |
148 | } | |
149 | ||
150 | mi_can_breakpoint_notify = 1; | |
98deb0da VP |
151 | /* Make sure we restore hooks even if exception is thrown. */ |
152 | TRY_CATCH (e, RETURN_MASK_ALL) | |
fb40c209 | 153 | { |
98deb0da VP |
154 | switch (type) |
155 | { | |
156 | case REG_BP: | |
a6d9a66e | 157 | set_breakpoint (get_current_arch (), address, condition, |
98deb0da VP |
158 | 0 /*hardwareflag */ , temp_p, |
159 | thread, ignore_count, | |
41447f92 | 160 | pending, enabled); |
98deb0da VP |
161 | break; |
162 | case HW_BP: | |
a6d9a66e | 163 | set_breakpoint (get_current_arch (), address, condition, |
98deb0da VP |
164 | 1 /*hardwareflag */ , temp_p, |
165 | thread, ignore_count, | |
41447f92 | 166 | pending, enabled); |
98deb0da | 167 | break; |
fb40c209 | 168 | #if 0 |
98deb0da VP |
169 | case REGEXP_BP: |
170 | if (temp_p) | |
171 | error (_("mi_cmd_break_insert: Unsupported tempoary regexp breakpoint")); | |
172 | else | |
173 | rbreak_command_wrapper (address, FROM_TTY); | |
98deb0da | 174 | break; |
fb40c209 | 175 | #endif |
98deb0da VP |
176 | default: |
177 | internal_error (__FILE__, __LINE__, | |
178 | _("mi_cmd_break_insert: Bad switch.")); | |
179 | } | |
fb40c209 | 180 | } |
383f836e | 181 | mi_can_breakpoint_notify = 0; |
98deb0da VP |
182 | if (e.reason < 0) |
183 | throw_exception (e); | |
fb40c209 AC |
184 | } |
185 | ||
186 | enum wp_type | |
187 | { | |
188 | REG_WP, | |
189 | READ_WP, | |
190 | ACCESS_WP | |
191 | }; | |
192 | ||
193 | /* Insert a watchpoint. The type of watchpoint is specified by the | |
194 | first argument: | |
195 | -break-watch <expr> --> insert a regular wp. | |
196 | -break-watch -r <expr> --> insert a read watchpoint. | |
197 | -break-watch -a <expr> --> insert an access wp. */ | |
198 | ||
ce8f13f8 | 199 | void |
fb40c209 AC |
200 | mi_cmd_break_watch (char *command, char **argv, int argc) |
201 | { | |
202 | char *expr = NULL; | |
203 | enum wp_type type = REG_WP; | |
204 | enum opt | |
205 | { | |
206 | READ_OPT, ACCESS_OPT | |
207 | }; | |
208 | static struct mi_opt opts[] = | |
209 | { | |
210 | {"r", READ_OPT, 0}, | |
211 | {"a", ACCESS_OPT, 0}, | |
d5d6fca5 | 212 | { 0, 0, 0 } |
fb40c209 AC |
213 | }; |
214 | ||
215 | /* Parse arguments. */ | |
216 | int optind = 0; | |
217 | char *optarg; | |
218 | while (1) | |
219 | { | |
220 | int opt = mi_getopt ("mi_cmd_break_watch", argc, argv, opts, &optind, &optarg); | |
221 | if (opt < 0) | |
222 | break; | |
223 | switch ((enum opt) opt) | |
224 | { | |
225 | case READ_OPT: | |
226 | type = READ_WP; | |
227 | break; | |
228 | case ACCESS_OPT: | |
229 | type = ACCESS_WP; | |
230 | break; | |
231 | } | |
232 | } | |
233 | if (optind >= argc) | |
8a3fe4f8 | 234 | error (_("mi_cmd_break_watch: Missing <expression>")); |
fb40c209 | 235 | if (optind < argc - 1) |
8a3fe4f8 | 236 | error (_("mi_cmd_break_watch: Garbage following <expression>")); |
fb40c209 AC |
237 | expr = argv[optind]; |
238 | ||
239 | /* Now we have what we need, let's insert the watchpoint! */ | |
240 | switch (type) | |
241 | { | |
242 | case REG_WP: | |
fb40c209 | 243 | watch_command_wrapper (expr, FROM_TTY); |
fb40c209 AC |
244 | break; |
245 | case READ_WP: | |
fb40c209 | 246 | rwatch_command_wrapper (expr, FROM_TTY); |
fb40c209 AC |
247 | break; |
248 | case ACCESS_WP: | |
fb40c209 | 249 | awatch_command_wrapper (expr, FROM_TTY); |
fb40c209 AC |
250 | break; |
251 | default: | |
8a3fe4f8 | 252 | error (_("mi_cmd_break_watch: Unknown watchpoint type.")); |
fb40c209 | 253 | } |
fb40c209 | 254 | } |
48cb2d85 VP |
255 | |
256 | /* The mi_read_next_line consults these variable to return successive | |
257 | command lines. While it would be clearer to use a closure pointer, | |
258 | it is not expected that any future code will use read_command_lines_1, | |
259 | therefore no point of overengineering. */ | |
260 | ||
261 | static char **mi_command_line_array; | |
262 | static int mi_command_line_array_cnt; | |
263 | static int mi_command_line_array_ptr; | |
264 | ||
265 | static char * | |
266 | mi_read_next_line () | |
267 | { | |
268 | if (mi_command_line_array_ptr == mi_command_line_array_cnt) | |
269 | return NULL; | |
270 | else | |
271 | return mi_command_line_array[mi_command_line_array_ptr++]; | |
272 | } | |
273 | ||
274 | void | |
275 | mi_cmd_break_commands (char *command, char **argv, int argc) | |
276 | { | |
277 | struct command_line *break_command; | |
278 | char *endptr; | |
279 | int bnum; | |
280 | struct breakpoint *b; | |
281 | ||
282 | if (argc < 1) | |
283 | error ("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]", command); | |
284 | ||
285 | bnum = strtol (argv[0], &endptr, 0); | |
286 | if (endptr == argv[0]) | |
287 | error ("breakpoint number argument \"%s\" is not a number.", | |
288 | argv[0]); | |
289 | else if (*endptr != '\0') | |
290 | error ("junk at the end of breakpoint number argument \"%s\".", | |
291 | argv[0]); | |
292 | ||
293 | b = get_breakpoint (bnum); | |
294 | if (b == NULL) | |
295 | error ("breakpoint %d not found.", bnum); | |
296 | ||
297 | mi_command_line_array = argv; | |
298 | mi_command_line_array_ptr = 1; | |
299 | mi_command_line_array_cnt = argc; | |
300 | ||
5d4e2b76 | 301 | break_command = read_command_lines_1 (mi_read_next_line, 1); |
48cb2d85 VP |
302 | breakpoint_set_commands (b, break_command); |
303 | } | |
304 |