ucontext.h revision 114951 
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 114951 2003-05-12 18:23:04Z 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_err;
58	register_t	mc_rip;
59	register_t	mc_cs;
60	register_t	mc_rflags;
61	register_t	mc_rsp;
62	register_t	mc_ss;
63
64	long	mc_len;			/* sizeof(mcontext_t) */
65#define	_MC_FPFMT_NODEV		0x10000	/* device not present or configured */
66#define	_MC_FPFMT_XMM		0x10002
67	long	mc_fpformat;
68#define	_MC_FPOWNED_NONE	0x20000	/* FP state not used */
69#define	_MC_FPOWNED_FPU		0x20001	/* FP state came from FPU */
70#define	_MC_FPOWNED_PCB		0x20002	/* FP state came from PCB */
71	long	mc_ownedfp;
72	long	mc_spare1[1];		/* align next field to 16 bytes */
73	/*
74	 * See <machine/npx.h> for the internals of mc_fpstate[].
75	 */
76	long	mc_fpstate[128] __aligned(16);
77	long	mc_spare2[8];
78} mcontext_t;
79
80#endif /* !_MACHINE_UCONTEXT_H_ */
81