ucontext.h revision 129198 
1/*	$NetBSD: mcontext.h,v 1.4 2003/10/08 22:43:01 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Klaus Klein and by Jason R. Thorpe of Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 *
38 * $FreeBSD: head/sys/arm/include/ucontext.h 129198 2004-05-14 11:46:45Z cognet $
39 */
40
41#ifndef _MACHINE_MCONTEXT_H_
42#define _MACHINE_MCONTEXT_H_
43/*
44 * General register state
45 */
46#define _NGREG		17
47typedef unsigned int	__greg_t;
48typedef __greg_t	__gregset_t[_NGREG];
49
50#define _REG_R0		0
51#define _REG_R1		1
52#define _REG_R2		2
53#define _REG_R3		3
54#define _REG_R4		4
55#define _REG_R5		5
56#define _REG_R6		6
57#define _REG_R7		7
58#define _REG_R8		8
59#define _REG_R9		9
60#define _REG_R10	10
61#define _REG_R11	11
62#define _REG_R12	12
63#define _REG_R13	13
64#define _REG_R14	14
65#define _REG_R15	15
66#define _REG_CPSR	16
67/* Convenience synonyms */
68#define _REG_FP		_REG_R11
69#define _REG_SP		_REG_R13
70#define _REG_LR		_REG_R14
71#define _REG_PC		_REG_R15
72
73/*
74 * Floating point register state
75 */
76/* Note: the storage layout of this structure must be identical to ARMFPE! */
77typedef struct {
78	unsigned int	__fp_fpsr;
79	struct {
80		unsigned int	__fp_exponent;
81		unsigned int	__fp_mantissa_hi;
82		unsigned int	__fp_mantissa_lo;
83	}		__fp_fr[8];
84} __fpregset_t;
85
86typedef struct {
87	unsigned int	__vfp_fpscr;
88	unsigned int	__vfp_fstmx[33];
89	unsigned int	__vfp_fpsid;
90} __vfpregset_t;
91
92typedef struct {
93	__gregset_t	__gregs;
94	union {
95		__fpregset_t __fpregs;
96		__vfpregset_t __vfpregs;
97	} __fpu;
98} mcontext_t;
99
100/* Machine-dependent uc_flags */
101#define	_UC_ARM_VFP	0x00010000	/* FPU field is VFP */
102
103/* used by signal delivery to indicate status of signal stack */
104#define _UC_SETSTACK	0x00020000
105#define _UC_CLRSTACK	0x00040000
106
107#define _UC_MACHINE_PAD	3		/* Padding appended to ucontext_t */
108
109#define _UC_MACHINE_SP(uc)	((uc)->uc_mcontext.__gregs[_REG_SP])
110#define _UC_MACHINE_PC(uc)	((uc)->uc_mcontext.__gregs[_REG_PC])
111#define _UC_MACHINE_INTRV(uc)	((uc)->uc_mcontext.__gregs[_REG_R0])
112
113#define	_UC_MACHINE_SET_PC(uc, pc)	_UC_MACHINE_PC(uc) = (pc)
114
115#endif	/* !_MACHINE_MCONTEXT_H_ */
116