xref: /dragonfly/sys/sys/ucontext.h (revision 1de703da)
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: src/sys/sys/ucontext.h,v 1.4 1999/10/11 20:33:17 luoqi Exp $
29  * $DragonFly: src/sys/sys/ucontext.h,v 1.2 2003/06/17 04:28:59 dillon Exp $
30  */
31 
32 #ifndef _SYS_UCONTEXT_H_
33 #define	_SYS_UCONTEXT_H_
34 
35 #include <machine/ucontext.h>
36 
37 typedef struct __ucontext {
38 	/*
39 	 * Keep the order of the first two fields. Also,
40 	 * keep them the first two fields in the structure.
41 	 * This way we can have a union with struct
42 	 * sigcontext and ucontext_t. This allows us to
43 	 * support them both at the same time.
44 	 * note: the union is not defined, though.
45 	 */
46 	sigset_t	uc_sigmask;
47 	mcontext_t	uc_mcontext;
48 
49 	struct __ucontext *uc_link;
50 	stack_t		uc_stack;
51 	int		__spare__[8];
52 } ucontext_t;
53 
54 #endif /* !_SYS_UCONTEXT_H_ */
55