ucontext.h revision 121103 
1/*-
2 * Copyright (c) 1999 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: head/sys/amd64/include/ucontext.h 121103 2003-10-15 02:04:52Z peter $
29 */
30
31#ifndef _MACHINE_UCONTEXT_H_
32#define	_MACHINE_UCONTEXT_H_
33
34typedef struct __mcontext {
35	/*
36	 * The first 20 fields must match the definition of
37	 * sigcontext. So that we can support sigcontext
38	 * and ucontext_t at the same time.
39	 */
40	__register_t	mc_onstack;		/* XXX - sigcontext compat. */
41	__register_t	mc_rdi;			/* machine state (struct trapframe) */
42	__register_t	mc_rsi;
43	__register_t	mc_rdx;
44	__register_t	mc_rcx;
45	__register_t	mc_r8;
46	__register_t	mc_r9;
47	__register_t	mc_rax;
48	__register_t	mc_rbx;
49	__register_t	mc_rbp;
50	__register_t	mc_r10;
51	__register_t	mc_r11;
52	__register_t	mc_r12;
53	__register_t	mc_r13;
54	__register_t	mc_r14;
55	__register_t	mc_r15;
56	__register_t	mc_trapno;
57	__register_t	mc_addr;
58	__register_t	mc_flags;
59	__register_t	mc_err;
60	__register_t	mc_rip;
61	__register_t	mc_cs;
62	__register_t	mc_rflags;
63	__register_t	mc_rsp;
64	__register_t	mc_ss;
65
66	long	mc_len;			/* sizeof(mcontext_t) */
67#define	_MC_FPFMT_NODEV		0x10000	/* device not present or configured */
68#define	_MC_FPFMT_XMM		0x10002
69	long	mc_fpformat;
70#define	_MC_FPOWNED_NONE	0x20000	/* FP state not used */
71#define	_MC_FPOWNED_FPU		0x20001	/* FP state came from FPU */
72#define	_MC_FPOWNED_PCB		0x20002	/* FP state came from PCB */
73	long	mc_ownedfp;
74	/*
75	 * See <machine/npx.h> for the internals of mc_fpstate[].
76	 */
77	long	mc_fpstate[64] __aligned(16);
78	long	mc_spare[8];
79} mcontext_t;
80
81#endif /* !_MACHINE_UCONTEXT_H_ */
82