Import gdb 7.3 into vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / mi / mi-cmd-break.c
CommitLineData
5796c8dc 1/* MI Command Set - breakpoint and watchpoint commands.
c50c785c 2 Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009, 2010, 2011
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3 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions (a Red Hat company).
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
10 the Free Software Foundation; either version 3 of the License, or
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
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20
21#include "defs.h"
22#include "arch-utils.h"
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"
29#include "gdb.h"
30#include "exceptions.h"
31#include "observer.h"
32
33enum
34 {
35 FROM_TTY = 0
36 };
37
38/* True if MI breakpoint observers have been registered. */
39
40static int mi_breakpoint_observers_installed;
41
42/* Control whether breakpoint_notify may act. */
43
44static int mi_can_breakpoint_notify;
45
46/* Output a single breakpoint, when allowed. */
47
48static void
49breakpoint_notify (int b)
50{
51 if (mi_can_breakpoint_notify)
52 gdb_breakpoint_query (uiout, b, NULL);
53}
54
55enum bp_type
56 {
57 REG_BP,
58 HW_BP,
59 REGEXP_BP
60 };
61
62/* Implements the -break-insert command.
63 See the MI manual for the list of possible options. */
64
65void
66mi_cmd_break_insert (char *command, char **argv, int argc)
67{
68 char *address = NULL;
cf7f2e2d 69 int hardware = 0;
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70 int temp_p = 0;
71 int thread = -1;
72 int ignore_count = 0;
73 char *condition = NULL;
74 int pending = 0;
75 int enabled = 1;
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76 int tracepoint = 0;
77 struct cleanup *back_to;
78 enum bptype type_wanted;
5796c8dc 79
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80 enum opt
81 {
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82 HARDWARE_OPT, TEMP_OPT, CONDITION_OPT,
83 IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT,
84 TRACEPOINT_OPT,
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85 };
86 static struct mi_opt opts[] =
87 {
88 {"h", HARDWARE_OPT, 0},
89 {"t", TEMP_OPT, 0},
90 {"c", CONDITION_OPT, 1},
91 {"i", IGNORE_COUNT_OPT, 1},
92 {"p", THREAD_OPT, 1},
93 {"f", PENDING_OPT, 0},
94 {"d", DISABLE_OPT, 0},
cf7f2e2d 95 {"a", TRACEPOINT_OPT, 0},
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96 { 0, 0, 0 }
97 };
98
99 /* Parse arguments. It could be -r or -h or -t, <location> or ``--''
100 to denote the end of the option list. */
101 int optind = 0;
102 char *optarg;
cf7f2e2d 103
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104 while (1)
105 {
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106 int opt = mi_getopt ("-break-insert", argc, argv,
107 opts, &optind, &optarg);
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108 if (opt < 0)
109 break;
110 switch ((enum opt) opt)
111 {
112 case TEMP_OPT:
113 temp_p = 1;
114 break;
115 case HARDWARE_OPT:
cf7f2e2d 116 hardware = 1;
5796c8dc 117 break;
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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;
127 case PENDING_OPT:
128 pending = 1;
129 break;
130 case DISABLE_OPT:
131 enabled = 0;
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132 break;
133 case TRACEPOINT_OPT:
134 tracepoint = 1;
135 break;
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136 }
137 }
138
139 if (optind >= argc)
c50c785c 140 error (_("-break-insert: Missing <location>"));
5796c8dc 141 if (optind < argc - 1)
c50c785c 142 error (_("-break-insert: Garbage following <location>"));
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143 address = argv[optind];
144
145 /* Now we have what we need, let's insert the breakpoint! */
146 if (! mi_breakpoint_observers_installed)
147 {
148 observer_attach_breakpoint_created (breakpoint_notify);
149 observer_attach_breakpoint_modified (breakpoint_notify);
150 observer_attach_breakpoint_deleted (breakpoint_notify);
151 mi_breakpoint_observers_installed = 1;
152 }
153
cf7f2e2d 154 back_to = make_cleanup_restore_integer (&mi_can_breakpoint_notify);
5796c8dc 155 mi_can_breakpoint_notify = 1;
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156
157 /* Note that to request a fast tracepoint, the client uses the
158 "hardware" flag, although there's nothing of hardware related to
159 fast tracepoints -- one can implement slow tracepoints with
160 hardware breakpoints, but fast tracepoints are always software.
161 "fast" is a misnomer, actually, "jump" would be more appropriate.
162 A simulator or an emulator could conceivably implement fast
163 regular non-jump based tracepoints. */
164 type_wanted = (tracepoint
165 ? (hardware ? bp_fast_tracepoint : bp_tracepoint)
166 : (hardware ? bp_hardware_breakpoint : bp_breakpoint));
167
168 create_breakpoint (get_current_arch (), address, condition, thread,
169 0 /* condition and thread are valid. */,
170 temp_p, type_wanted,
171 ignore_count,
172 pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE,
c50c785c 173 NULL, 0, enabled, 0);
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174 do_cleanups (back_to);
175
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176}
177
178enum wp_type
179{
180 REG_WP,
181 READ_WP,
182 ACCESS_WP
183};
184
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185void
186mi_cmd_break_passcount (char *command, char **argv, int argc)
187{
188 int n;
189 int p;
190 struct breakpoint *t;
191
192 if (argc != 2)
193 error (_("Usage: tracepoint-number passcount"));
194
195 n = atoi (argv[0]);
196 p = atoi (argv[1]);
197 t = get_tracepoint (n);
198
199 if (t)
200 {
201 t->pass_count = p;
202 observer_notify_tracepoint_modified (n);
203 }
204 else
205 {
206 error (_("Cound not find tracepoint %d"), n);
207 }
208}
209
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210/* Insert a watchpoint. The type of watchpoint is specified by the
211 first argument:
212 -break-watch <expr> --> insert a regular wp.
213 -break-watch -r <expr> --> insert a read watchpoint.
214 -break-watch -a <expr> --> insert an access wp. */
215
216void
217mi_cmd_break_watch (char *command, char **argv, int argc)
218{
219 char *expr = NULL;
220 enum wp_type type = REG_WP;
221 enum opt
222 {
223 READ_OPT, ACCESS_OPT
224 };
225 static struct mi_opt opts[] =
226 {
227 {"r", READ_OPT, 0},
228 {"a", ACCESS_OPT, 0},
229 { 0, 0, 0 }
230 };
231
232 /* Parse arguments. */
233 int optind = 0;
234 char *optarg;
cf7f2e2d 235
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236 while (1)
237 {
c50c785c 238 int opt = mi_getopt ("-break-watch", argc, argv,
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239 opts, &optind, &optarg);
240
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241 if (opt < 0)
242 break;
243 switch ((enum opt) opt)
244 {
245 case READ_OPT:
246 type = READ_WP;
247 break;
248 case ACCESS_OPT:
249 type = ACCESS_WP;
250 break;
251 }
252 }
253 if (optind >= argc)
c50c785c 254 error (_("-break-watch: Missing <expression>"));
5796c8dc 255 if (optind < argc - 1)
c50c785c 256 error (_("-break-watch: Garbage following <expression>"));
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257 expr = argv[optind];
258
259 /* Now we have what we need, let's insert the watchpoint! */
260 switch (type)
261 {
262 case REG_WP:
c50c785c 263 watch_command_wrapper (expr, FROM_TTY, 0);
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264 break;
265 case READ_WP:
c50c785c 266 rwatch_command_wrapper (expr, FROM_TTY, 0);
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267 break;
268 case ACCESS_WP:
c50c785c 269 awatch_command_wrapper (expr, FROM_TTY, 0);
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270 break;
271 default:
c50c785c 272 error (_("-break-watch: Unknown watchpoint type."));
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273 }
274}
275
276/* The mi_read_next_line consults these variable to return successive
277 command lines. While it would be clearer to use a closure pointer,
278 it is not expected that any future code will use read_command_lines_1,
279 therefore no point of overengineering. */
280
281static char **mi_command_line_array;
282static int mi_command_line_array_cnt;
283static int mi_command_line_array_ptr;
284
285static char *
cf7f2e2d 286mi_read_next_line (void)
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287{
288 if (mi_command_line_array_ptr == mi_command_line_array_cnt)
289 return NULL;
290 else
291 return mi_command_line_array[mi_command_line_array_ptr++];
292}
293
294void
295mi_cmd_break_commands (char *command, char **argv, int argc)
296{
297 struct command_line *break_command;
298 char *endptr;
299 int bnum;
300 struct breakpoint *b;
301
302 if (argc < 1)
c50c785c 303 error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command);
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304
305 bnum = strtol (argv[0], &endptr, 0);
306 if (endptr == argv[0])
c50c785c 307 error (_("breakpoint number argument \"%s\" is not a number."),
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308 argv[0]);
309 else if (*endptr != '\0')
c50c785c 310 error (_("junk at the end of breakpoint number argument \"%s\"."),
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311 argv[0]);
312
313 b = get_breakpoint (bnum);
314 if (b == NULL)
c50c785c 315 error (_("breakpoint %d not found."), bnum);
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316
317 mi_command_line_array = argv;
318 mi_command_line_array_ptr = 1;
319 mi_command_line_array_cnt = argc;
320
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321 if (is_tracepoint (b))
322 break_command = read_command_lines_1 (mi_read_next_line, 1,
323 check_tracepoint_command, b);
324 else
325 break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0);
326
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327 breakpoint_set_commands (b, break_command);
328}
329