1/*-
2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify and distribute this software and its
7 * documentation is hereby granted, provided that both the copyright
8 * notice and this permission notice appear in all copies of the
9 * software, derivative works or modified versions, and any portions
10 * thereof, and that both notices appear in supporting documentation.
11 *
12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15 *
16 * Carnegie Mellon requests users of this software to return to
17 *
18 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
19 *  School of Computer Science
20 *  Carnegie Mellon University
21 *  Pittsburgh PA 15213-3890
22 *
23 * any improvements or extensions that they make and grant Carnegie Mellon
24 * the rights to redistribute these changes.
25 *
26 *	from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04
27 * $FreeBSD$
28 */
29
30#ifndef	_MACHINE_DB_MACHDEP_H_
31#define	_MACHINE_DB_MACHDEP_H_
32
33#include <machine/frame.h>
34#include <machine/trap.h>
35
36#define	BYTE_MSF	(1)
37
38typedef vm_offset_t	db_addr_t;
39typedef long		db_expr_t;
40
41#define	PC_REGS()	((db_addr_t)kdb_thrctx->pcb_pc)
42
43#define	BKPT_INST	(0x91d03001)
44#define	BKPT_SIZE	(4)
45#define	BKPT_SET(inst)	(BKPT_INST)
46
47#define	BKPT_SKIP do {							\
48	kdb_frame->tf_tpc = kdb_frame->tf_tnpc + 4;			\
49	kdb_frame->tf_tnpc += 8;					\
50} while (0)
51
52#define	db_clear_single_step	kdb_cpu_clear_singlestep
53#define	db_set_single_step	kdb_cpu_set_singlestep
54
55#define	IS_BREAKPOINT_TRAP(type, code)	(type == T_BREAKPOINT)
56#define	IS_WATCHPOINT_TRAP(type, code)	(0)
57
58#define	inst_trap_return(ins)	(0)
59#define	inst_return(ins)	(0)
60#define	inst_call(ins)		(0)
61#define	inst_load(ins)		(0)
62#define	inst_store(ins)		(0)
63
64#define	DB_SMALL_VALUE_MAX	(0x7fffffff)
65#define	DB_SMALL_VALUE_MIN	(-0x40001)
66
67#define	DB_ELFSIZE		64
68
69#endif /* !_MACHINE_DB_MACHDEP_H_ */
70