ucontext.h revision 122296 
1/*-
2 * Copyright (c) 2003 Peter Wemm
3 * Copyright (c) 1999 Marcel Moolenaar
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer
11 *    in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sys/amd64/include/ucontext.h 122296 2003-11-08 04:39:22Z peter $
30 */
31
32#ifndef _MACHINE_UCONTEXT_H_
33#define	_MACHINE_UCONTEXT_H_
34
35typedef struct __mcontext {
36	/*
37	 * The first 20 fields must match the definition of
38	 * sigcontext. So that we can support sigcontext
39	 * and ucontext_t at the same time.
40	 */
41	__register_t	mc_onstack;		/* XXX - sigcontext compat. */
42	__register_t	mc_rdi;			/* machine state (struct trapframe) */
43	__register_t	mc_rsi;
44	__register_t	mc_rdx;
45	__register_t	mc_rcx;
46	__register_t	mc_r8;
47	__register_t	mc_r9;
48	__register_t	mc_rax;
49	__register_t	mc_rbx;
50	__register_t	mc_rbp;
51	__register_t	mc_r10;
52	__register_t	mc_r11;
53	__register_t	mc_r12;
54	__register_t	mc_r13;
55	__register_t	mc_r14;
56	__register_t	mc_r15;
57	__register_t	mc_trapno;
58	__register_t	mc_addr;
59	__register_t	mc_flags;
60	__register_t	mc_err;
61	__register_t	mc_rip;
62	__register_t	mc_cs;
63	__register_t	mc_rflags;
64	__register_t	mc_rsp;
65	__register_t	mc_ss;
66
67	long	mc_len;			/* sizeof(mcontext_t) */
68#define	_MC_FPFMT_NODEV		0x10000	/* device not present or configured */
69#define	_MC_FPFMT_XMM		0x10002
70	long	mc_fpformat;
71#define	_MC_FPOWNED_NONE	0x20000	/* FP state not used */
72#define	_MC_FPOWNED_FPU		0x20001	/* FP state came from FPU */
73#define	_MC_FPOWNED_PCB		0x20002	/* FP state came from PCB */
74	long	mc_ownedfp;
75	/*
76	 * See <machine/fpu.h> for the internals of mc_fpstate[].
77	 */
78	long	mc_fpstate[64] __aligned(16);
79	long	mc_spare[8];
80} mcontext_t;
81
82#endif /* !_MACHINE_UCONTEXT_H_ */
83