kdb.h revision 132001 
1/*
2 * Copyright (c) 2004 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/sys/kdb.h 132001 2004-07-12 01:15:55Z marcel $
27 */
28
29#ifndef _SYS_KDB_H_
30#define	_SYS_KDB_H_
31
32#include <machine/setjmp.h>
33
34typedef int dbbe_init_f(void);
35typedef void dbbe_trace_f(void);
36typedef int dbbe_trap_f(int, int);
37
38struct kdb_dbbe {
39	const char	*dbbe_name;
40	dbbe_init_f	*dbbe_init;
41	dbbe_trace_f	*dbbe_trace;
42	dbbe_trap_f	*dbbe_trap;
43	int		dbbe_active;
44};
45
46#define	KDB_BACKEND(name, init, trace, trap)		\
47	static struct kdb_dbbe name##_dbbe = {		\
48		.dbbe_name = #name,			\
49		.dbbe_init = init,			\
50		.dbbe_trace = trace,			\
51		.dbbe_trap = trap			\
52	};						\
53	DATA_SET(kdb_dbbe_set, name##_dbbe)
54
55struct pcb;
56struct thread;
57struct trapframe;
58
59extern int kdb_active;			/* Non-zero while in debugger. */
60extern struct kdb_dbbe *kdb_dbbe;	/* Default debugger backend or NULL. */
61extern struct trapframe *kdb_frame;	/* Frame to kdb_trap(). */
62extern struct pcb *kdb_thrctx;		/* Current context. */
63extern struct thread *kdb_thread;	/* Current thread. */
64
65int	kdb_alt_break(int, int *);
66void	kdb_backtrace(void);
67int	kdb_dbbe_select(const char *);
68void	kdb_enter(const char *);
69void	kdb_init(void);
70void *	kdb_jmpbuf(jmp_buf);
71void	kdb_reenter(void);
72struct pcb *kdb_thr_ctx(struct thread *);
73struct thread *kdb_thr_first(void);
74struct thread *kdb_thr_lookup(pid_t);
75struct thread *kdb_thr_next(struct thread *);
76int	kdb_thr_select(struct thread *);
77int	kdb_trap(int, int, struct trapframe *);
78
79#endif /* !_SYS_KDB_H_ */
80