1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1999 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
18 *
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.
29 */
30
31#ifndef _X86_SIGFRAME_H_
32#define _X86_SIGFRAME_H_
33
34/*
35 * Signal frames, arguments passed to application signal handlers.
36 */
37
38#ifdef __i386__
39struct sigframe {
40 /*
41 * The first four members may be used by applications.
42 *
43 * NOTE: The 4th argument is undocumented, ill commented
44 * on and seems to be somewhat BSD "standard". Handlers
45 * installed with sigvec may be using it.
46 */
47 register_t sf_signum;
48 register_t sf_siginfo; /* code or pointer to sf_si */
49 register_t sf_ucontext; /* points to sf_uc */
50 register_t sf_addr; /* undocumented 4th arg */
51
52 union {
53 __siginfohandler_t *sf_action;
54 __sighandler_t *sf_handler;
55 } sf_ahu;
56 ucontext_t sf_uc; /* = *sf_ucontext */
57 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
58};
59#endif /* __i386__ */
60
61#ifdef __amd64__
62struct sigframe {
63 union {
64 __siginfohandler_t *sf_action;
65 __sighandler_t *sf_handler;
66 } sf_ahu;
67 ucontext_t sf_uc; /* = *sf_ucontext */
68 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
69};
70#endif /* __amd64__ */
71
72#endif /* _X86_SIGFRAME_H_ */