Annotation of sys/arch/amd64/include/mcontext.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mcontext.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */
2: /* $NetBSD: mcontext.h,v 1.1 2003/04/26 18:39:44 fvdl Exp $ */
3:
4: /*-
5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Klaus Klein.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #ifndef _AMD64_MCONTEXT_H_
41: #define _AMD64_MCONTEXT_H_
42:
43: /*
44: * Layout of mcontext_t according to the System V Application Binary Interface,
45: * Intel386(tm) Architecture Processor Supplement, Fourth Edition.
46: */
47:
48: /*
49: * General register state
50: */
51: #define _NGREG 26
52: typedef long __greg_t;
53: typedef __greg_t __gregset_t[_NGREG];
54:
55: /*
56: * This is laid out to match trapframe and intrframe (see <machine/frame.h>).
57: * Hence, memcpy between gregs and a trapframe is possible.
58: */
59: #define _REG_RDI 0
60: #define _REG_RSI 1
61: #define _REG_RDX 2
62: #define _REG_RCX 3
63: #define _REG_R8 4
64: #define _REG_R9 5
65: #define _REG_R10 6
66: #define _REG_R11 7
67: #define _REG_R12 8
68: #define _REG_R13 9
69: #define _REG_R14 10
70: #define _REG_R15 11
71: #define _REG_RBP 12
72: #define _REG_RBX 13
73: #define _REG_RAX 14
74: #define _REG_GS 15
75: #define _REG_FS 16
76: #define _REG_ES 17
77: #define _REG_DS 18
78: #define _REG_TRAPNO 19
79: #define _REG_ERR 20
80: #define _REG_RIP 21
81: #define _REG_CS 22
82: #define _REG_RFL 23
83: #define _REG_URSP 24
84: #define _REG_SS 25
85:
86: /*
87: * Floating point register state
88: */
89: typedef char __fpregset_t[512];
90:
91: /*
92: * The padding below is to make __fpregs have a 16-byte aligned offset
93: * within ucontext_t.
94: */
95:
96: typedef struct {
97: __gregset_t __gregs;
98: long __pad;
99: __fpregset_t __fpregs;
100: } mcontext_t;
101:
102: #define _UC_UCONTEXT_ALIGN (~0xf)
103:
104: #ifdef _KERNEL
105: #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_URSP])
106: #endif
107:
108: #endif /* !_AMD64_MCONTEXT_H_ */
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