1 /* MI Command Set - breakpoint and watchpoint commands.
2 Copyright (C) 2000-2002, 2007-2012 Free Software Foundation, Inc.
3 Contributed by Cygnus Solutions (a Red Hat company).
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
25 #include "breakpoint.h"
26 #include "gdb_string.h"
27 #include "mi-getopt.h"
29 #include "exceptions.h"
38 /* True if MI breakpoint observers have been registered. */
40 static int mi_breakpoint_observers_installed;
42 /* Control whether breakpoint_notify may act. */
44 static int mi_can_breakpoint_notify;
46 /* Output a single breakpoint, when allowed. */
49 breakpoint_notify (struct breakpoint *b)
51 if (mi_can_breakpoint_notify)
52 gdb_breakpoint_query (current_uiout, b->number, NULL);
62 /* Implements the -break-insert command.
63 See the MI manual for the list of possible options. */
66 mi_cmd_break_insert (char *command, char **argv, int argc)
73 char *condition = NULL;
77 struct cleanup *back_to;
78 enum bptype type_wanted;
82 HARDWARE_OPT, TEMP_OPT, CONDITION_OPT,
83 IGNORE_COUNT_OPT, THREAD_OPT, PENDING_OPT, DISABLE_OPT,
86 static const struct mi_opt opts[] =
88 {"h", HARDWARE_OPT, 0},
90 {"c", CONDITION_OPT, 1},
91 {"i", IGNORE_COUNT_OPT, 1},
93 {"f", PENDING_OPT, 0},
94 {"d", DISABLE_OPT, 0},
95 {"a", TRACEPOINT_OPT, 0},
99 /* Parse arguments. It could be -r or -h or -t, <location> or ``--''
100 to denote the end of the option list. */
106 int opt = mi_getopt ("-break-insert", argc, argv,
107 opts, &optind, &optarg);
110 switch ((enum opt) opt)
121 case IGNORE_COUNT_OPT:
122 ignore_count = atol (optarg);
125 thread = atol (optarg);
140 error (_("-break-insert: Missing <location>"));
141 if (optind < argc - 1)
142 error (_("-break-insert: Garbage following <location>"));
143 address = argv[optind];
145 /* Now we have what we need, let's insert the breakpoint! */
146 if (! mi_breakpoint_observers_installed)
148 observer_attach_breakpoint_created (breakpoint_notify);
149 mi_breakpoint_observers_installed = 1;
152 back_to = make_cleanup_restore_integer (&mi_can_breakpoint_notify);
153 mi_can_breakpoint_notify = 1;
155 /* Note that to request a fast tracepoint, the client uses the
156 "hardware" flag, although there's nothing of hardware related to
157 fast tracepoints -- one can implement slow tracepoints with
158 hardware breakpoints, but fast tracepoints are always software.
159 "fast" is a misnomer, actually, "jump" would be more appropriate.
160 A simulator or an emulator could conceivably implement fast
161 regular non-jump based tracepoints. */
162 type_wanted = (tracepoint
163 ? (hardware ? bp_fast_tracepoint : bp_tracepoint)
164 : (hardware ? bp_hardware_breakpoint : bp_breakpoint));
166 create_breakpoint (get_current_arch (), address, condition, thread,
167 0 /* condition and thread are valid. */,
170 pending ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE,
171 &bkpt_breakpoint_ops, 0, enabled, 0, 0);
172 do_cleanups (back_to);
184 mi_cmd_break_passcount (char *command, char **argv, int argc)
188 struct tracepoint *t;
191 error (_("Usage: tracepoint-number passcount"));
195 t = get_tracepoint (n);
200 observer_notify_tracepoint_modified (n);
204 error (_("Could not find tracepoint %d"), n);
208 /* Insert a watchpoint. The type of watchpoint is specified by the
210 -break-watch <expr> --> insert a regular wp.
211 -break-watch -r <expr> --> insert a read watchpoint.
212 -break-watch -a <expr> --> insert an access wp. */
215 mi_cmd_break_watch (char *command, char **argv, int argc)
218 enum wp_type type = REG_WP;
223 static const struct mi_opt opts[] =
226 {"a", ACCESS_OPT, 0},
230 /* Parse arguments. */
236 int opt = mi_getopt ("-break-watch", argc, argv,
237 opts, &optind, &optarg);
241 switch ((enum opt) opt)
252 error (_("-break-watch: Missing <expression>"));
253 if (optind < argc - 1)
254 error (_("-break-watch: Garbage following <expression>"));
257 /* Now we have what we need, let's insert the watchpoint! */
261 watch_command_wrapper (expr, FROM_TTY, 0);
264 rwatch_command_wrapper (expr, FROM_TTY, 0);
267 awatch_command_wrapper (expr, FROM_TTY, 0);
270 error (_("-break-watch: Unknown watchpoint type."));
274 /* The mi_read_next_line consults these variable to return successive
275 command lines. While it would be clearer to use a closure pointer,
276 it is not expected that any future code will use read_command_lines_1,
277 therefore no point of overengineering. */
279 static char **mi_command_line_array;
280 static int mi_command_line_array_cnt;
281 static int mi_command_line_array_ptr;
284 mi_read_next_line (void)
286 if (mi_command_line_array_ptr == mi_command_line_array_cnt)
289 return mi_command_line_array[mi_command_line_array_ptr++];
293 mi_cmd_break_commands (char *command, char **argv, int argc)
295 struct command_line *break_command;
298 struct breakpoint *b;
301 error (_("USAGE: %s <BKPT> [<COMMAND> [<COMMAND>...]]"), command);
303 bnum = strtol (argv[0], &endptr, 0);
304 if (endptr == argv[0])
305 error (_("breakpoint number argument \"%s\" is not a number."),
307 else if (*endptr != '\0')
308 error (_("junk at the end of breakpoint number argument \"%s\"."),
311 b = get_breakpoint (bnum);
313 error (_("breakpoint %d not found."), bnum);
315 mi_command_line_array = argv;
316 mi_command_line_array_ptr = 1;
317 mi_command_line_array_cnt = argc;
319 if (is_tracepoint (b))
320 break_command = read_command_lines_1 (mi_read_next_line, 1,
321 check_tracepoint_command, b);
323 break_command = read_command_lines_1 (mi_read_next_line, 1, 0, 0);
325 breakpoint_set_commands (b, break_command);