2 * Copyright (c) 2003 Peter Wemm
3 * Copyright (c) 1999 Marcel Moolenaar
4 * Copyright (c) 2008 The DragonFly Project.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * $FreeBSD: src/sys/amd64/include/ucontext.h,v 1.18 2003/11/08 04:39:22 peter Exp $
33 #ifndef _CPU_UCONTEXT_H_
34 #define _CPU_UCONTEXT_H_
36 typedef struct __mcontext {
38 * The first 20 fields must match the definition of
39 * sigcontext. So that we can support sigcontext
40 * and ucontext_t at the same time.
42 * NOTE: bcopy in sendsig copies trapframe to this
43 * structure as of mc_rdi.
45 __register_t mc_onstack; /* XXX - sigcontext compat. */
61 __register_t mc_xflags;
62 __register_t mc_trapno;
64 __register_t mc_flags;
68 __register_t mc_rflags;
69 __register_t mc_rsp; /* machine state */
72 unsigned int mc_len; /* sizeof(mcontext_t) */
73 unsigned int mc_fpformat;
74 unsigned int mc_ownedfp;
75 unsigned int mc_reserved;
76 unsigned int mc_unused01;
77 unsigned int mc_unused02;
85 #define _MC_FPFMT_NODEV 0x10000 /* device not present or configured */
86 #define _MC_FPFMT_387 0x10001
87 #define _MC_FPFMT_XMM 0x10002
89 #define _MC_FPOWNED_NONE 0x20000 /* FP state not used */
90 #define _MC_FPOWNED_FPU 0x20001 /* FP state came from FPU */
91 #define _MC_FPOWNED_PCB 0x20002 /* FP state came from PCB */
93 #endif /* !_CPU_UCONTEXT_H_ */