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 _MACHINE_SIGFRAME_H_
32#define _MACHINE_SIGFRAME_H_
33
34/*
35 * Signal frames, arguments passed to application signal handlers.
36 */
37#ifdef _KERNEL
38#ifdef COMPAT_43
39struct osigframe {
40 /*
41 * The first four members may be used by applications.
42 */
43
44 register_t sf_signum;
45
46 /*
47 * Either 'int' for old-style FreeBSD handler or 'siginfo_t *'
48 * pointing to sf_siginfo for SA_SIGINFO handlers.
49 */
50 register_t sf_arg2;
51
52 /* Points to sf_siginfo.si_sc. */
53 register_t sf_scp;
54
55 register_t sf_addr;
56
57 /*
58 * The following arguments are not constrained by the
59 * function call protocol.
60 * Applications are not supposed to access these members,
61 * except using the pointers we provide in the first three
62 * arguments.
63 */
64
65 union {
66 __osiginfohandler_t *sf_action;
67 __sighandler_t *sf_handler;
68 } sf_ahu;
69
70 /* In the SA_SIGINFO case, sf_arg2 points here. */
71 osiginfo_t sf_siginfo;
72};
73#endif
74#ifdef COMPAT_FREEBSD4
75/* FreeBSD 4.x */
76struct freebsd4_sigframe {
77 register_t sf_signum;
78 register_t sf_siginfo; /* code or pointer to sf_si */
79 register_t sf_ucontext; /* points to sf_uc */
80 register_t sf_addr; /* undocumented 4th arg */
81
82 union {
83 __siginfohandler_t *sf_action;
84 __sighandler_t *sf_handler;
85 } sf_ahu;
86 struct freebsd4_ucontext sf_uc; /* = *sf_ucontext */
87 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
88};
89#endif
90#endif
91
92#include <x86/sigframe.h>
93
94#endif /* !_MACHINE_SIGFRAME_H_ */