1/*-
2 * Copyright (c) 2014 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Semihalf under
6 * the sponsorship of the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32#ifndef _MACHINE_DEBUG_MONITOR_H_
33#define	_MACHINE_DEBUG_MONITOR_H_
34
35#ifdef DDB
36
37#include <machine/db_machdep.h>
38
39enum dbg_access_t {
40	HW_BREAKPOINT_X		= 0,
41	HW_WATCHPOINT_R		= 1,
42	HW_WATCHPOINT_W		= 2,
43	HW_WATCHPOINT_RW	= HW_WATCHPOINT_R | HW_WATCHPOINT_W,
44};
45
46#if __ARM_ARCH >= 6
47void dbg_monitor_init(void);
48void dbg_monitor_init_secondary(void);
49void dbg_show_watchpoint(void);
50int dbg_setup_watchpoint(db_expr_t, db_expr_t, enum dbg_access_t);
51int dbg_remove_watchpoint(db_expr_t, db_expr_t);
52void dbg_resume_dbreg(void);
53#else /* __ARM_ARCH >= 6 */
54static __inline void
55dbg_show_watchpoint(void)
56{
57}
58static __inline int
59dbg_setup_watchpoint(db_expr_t addr __unused, db_expr_t size __unused,
60    enum dbg_access_t access __unused)
61{
62	return (ENXIO);
63}
64static __inline int
65dbg_remove_watchpoint(db_expr_t addr __unused, db_expr_t size __unused)
66{
67	return (ENXIO);
68}
69static __inline void
70dbg_monitor_init(void)
71{
72}
73static __inline void
74dbg_monitor_init_secondary(void)
75{
76}
77static __inline void
78dbg_resume_dbreg(void)
79{
80}
81#endif /* __ARM_ARCH < 6 */
82
83#else /* DDB */
84static __inline void
85dbg_monitor_init(void)
86{
87}
88#endif
89
90#endif /* _MACHINE_DEBUG_MONITOR_H_ */
91