db_machdep.h revision 86525 
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: head/sys/sparc64/include/db_machdep.h 86525 2001-11-18 03:41:12Z jake $
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
41typedef struct trapframe db_regs_t;
42extern db_regs_t ddb_regs;
43#define	DDB_REGS	(&ddb_regs)
44
45#define	PC_REGS(regs)	((db_addr_t)(regs)->tf_tpc)
46
47#define	BKPT_INST	(0)
48#define	BKPT_SIZE	(4)
49#define	BKPT_SET(inst)	(BKPT_INST)
50
51#define	BKPT_SKIP do {							\
52	ddb_regs.tf_tpc = ddb_regs.tf_tnpc + 4;				\
53	ddb_regs.tf_tnpc += 8;						\
54} while (0)
55
56#define	db_clear_single_step(regs)
57#define	db_set_single_step(regs)
58
59#define	IS_BREAKPOINT_TRAP(type, code)	(type == T_BREAKPOINT)
60#define	IS_WATCHPOINT_TRAP(type, code)	(0)
61
62#define	inst_trap_return(ins)	(0)
63#define	inst_return(ins)	(0)
64#define	inst_call(ins)		(0)
65#define	inst_load(ins)		(0)
66#define	inst_store(ins)		(0)
67
68#define	DB_SMALL_VALUE_MAX	(0x7fffffff)
69#define	DB_SMALL_VALUE_MIN	(-0x40001)
70
71#define	DB_ELFSIZE		64
72
73#endif /* !_MACHINE_DB_MACHDEP_H_ */
74