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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $FreeBSD: releng/9.0/sys/arm/include/ucontext.h 203974 2010-02-16 21:59:17Z imp $
32 */
33
34 #ifndef _MACHINE_MCONTEXT_H_
35 #define _MACHINE_MCONTEXT_H_
36 /*
37 * General register state
38 */
39 #define _NGREG 17
40 typedef unsigned int __greg_t;
41 typedef __greg_t __gregset_t[_NGREG];
42
43 #define _REG_R0 0
44 #define _REG_R1 1
45 #define _REG_R2 2
46 #define _REG_R3 3
47 #define _REG_R4 4
48 #define _REG_R5 5
49 #define _REG_R6 6
50 #define _REG_R7 7
51 #define _REG_R8 8
52 #define _REG_R9 9
53 #define _REG_R10 10
54 #define _REG_R11 11
55 #define _REG_R12 12
56 #define _REG_R13 13
57 #define _REG_R14 14
58 #define _REG_R15 15
59 #define _REG_CPSR 16
60 /* Convenience synonyms */
61 #define _REG_FP _REG_R11
62 #define _REG_SP _REG_R13
63 #define _REG_LR _REG_R14
64 #define _REG_PC _REG_R15
65
66 /*
67 * Floating point register state
68 */
69 /* Note: the storage layout of this structure must be identical to ARMFPE! */
70 typedef struct {
71 unsigned int __fp_fpsr;
72 struct {
73 unsigned int __fp_exponent;
74 unsigned int __fp_mantissa_hi;
75 unsigned int __fp_mantissa_lo;
76 } __fp_fr[8];
77 } __fpregset_t;
78
79 typedef struct {
80 unsigned int __vfp_fpscr;
81 unsigned int __vfp_fstmx[33];
82 unsigned int __vfp_fpsid;
83 } __vfpregset_t;
84
85 typedef struct {
86 __gregset_t __gregs;
87 union {
88 __fpregset_t __fpregs;
89 __vfpregset_t __vfpregs;
90 } __fpu;
91 } mcontext_t;
92
93 /* Machine-dependent uc_flags */
94 #define _UC_ARM_VFP 0x00010000 /* FPU field is VFP */
95
96 /* used by signal delivery to indicate status of signal stack */
97 #define _UC_SETSTACK 0x00020000
98 #define _UC_CLRSTACK 0x00040000
99
100 #define _UC_MACHINE_PAD 3 /* Padding appended to ucontext_t */
101
102 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
103 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
104 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
105
106 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
107
108 #endif /* !_MACHINE_MCONTEXT_H_ */
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