sigframe.h revision 51792 
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/i386/include/sigframe.h 51792 1999-09-29 15:06:27Z marcel $
29 */
30
31#ifndef _MACHINE_SIGFRAME_H_
32#define _MACHINE_SIGFRAME_H_ 1
33
34struct	osigframe {
35	/*
36	 * The first three members may be used by applications.
37	 */
38
39	register_t	sf_signum;
40
41	/*
42	 * Either 'int' for old-style FreeBSD handler or 'siginfo_t *'
43	 * pointing to sf_siginfo for SA_SIGINFO handlers.
44	 */
45	register_t	sf_arg2;
46
47	/* Points to sf_siginfo.si_sc. */
48	register_t	sf_scp;
49
50	/*
51	 * The following arguments are not constrained by the
52	 * function call protocol.
53	 * Applications are not supposed to access these members,
54	 * except using the pointers we provide in the first three
55	 * arguments.
56	 */
57
58	char		*sf_addr;
59
60	union {
61		__osiginfohandler_t	*sf_action;
62		__sighandler_t		*sf_handler;
63	} sf_ahu;
64
65	/* In the SA_SIGINFO case, sf_arg2 points here. */
66	osiginfo_t	sf_siginfo;
67};
68
69struct sigframe {
70	/*
71	 * The first three members may be used by applications.
72	 */
73	register_t	sf_signum;
74	register_t	sf_siginfo;		/* code or pointer to sf_si */
75	register_t	sf_ucontext;		/* points to sf_uc */
76	register_t	__spare__;		/* Align sf_ahu */
77	union {
78		__siginfohandler_t	*sf_action;
79		__sighandler_t		*sf_handler;
80	} sf_ahu;
81	register_t	sf_sigreturn;	/* sigreturn to use */
82	siginfo_t	sf_si;		/* = *sf_siginfo (SA_SIGINFO case) */
83	ucontext_t	sf_uc;		/* = *sf_ucontext */
84};
85
86#endif /* _MACHINE_SIGFRAME_H_ */
87