xref: /freebsd/sys/sys/_ucontext.h (revision 95ee2897)
190edf67eSKonstantin Belousov /*-
29b10f59aSPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
39b10f59aSPedro F. Giffuni  *
490edf67eSKonstantin Belousov  * Copyright (c) 1999 Marcel Moolenaar
590edf67eSKonstantin Belousov  * All rights reserved.
690edf67eSKonstantin Belousov  *
790edf67eSKonstantin Belousov  * Redistribution and use in source and binary forms, with or without
890edf67eSKonstantin Belousov  * modification, are permitted provided that the following conditions
990edf67eSKonstantin Belousov  * are met:
1090edf67eSKonstantin Belousov  * 1. Redistributions of source code must retain the above copyright
1190edf67eSKonstantin Belousov  *    notice, this list of conditions and the following disclaimer
1290edf67eSKonstantin Belousov  *    in this position and unchanged.
1390edf67eSKonstantin Belousov  * 2. Redistributions in binary form must reproduce the above copyright
1490edf67eSKonstantin Belousov  *    notice, this list of conditions and the following disclaimer in the
1590edf67eSKonstantin Belousov  *    documentation and/or other materials provided with the distribution.
1690edf67eSKonstantin Belousov  * 3. The name of the author may not be used to endorse or promote products
1790edf67eSKonstantin Belousov  *    derived from this software without specific prior written permission.
1890edf67eSKonstantin Belousov  *
1990edf67eSKonstantin Belousov  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
2090edf67eSKonstantin Belousov  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2190edf67eSKonstantin Belousov  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2290edf67eSKonstantin Belousov  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
2390edf67eSKonstantin Belousov  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2490edf67eSKonstantin Belousov  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2590edf67eSKonstantin Belousov  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2690edf67eSKonstantin Belousov  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2790edf67eSKonstantin Belousov  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2890edf67eSKonstantin Belousov  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2990edf67eSKonstantin Belousov  */
3090edf67eSKonstantin Belousov 
3190edf67eSKonstantin Belousov #ifndef _SYS__UCONTEXT_H_
3290edf67eSKonstantin Belousov #define	_SYS__UCONTEXT_H_
3390edf67eSKonstantin Belousov 
3490edf67eSKonstantin Belousov typedef struct __ucontext {
3590edf67eSKonstantin Belousov 	/*
3690edf67eSKonstantin Belousov 	 * Keep the order of the first two fields. Also,
3790edf67eSKonstantin Belousov 	 * keep them the first two fields in the structure.
3890edf67eSKonstantin Belousov 	 * This way we can have a union with struct
3990edf67eSKonstantin Belousov 	 * sigcontext and ucontext_t. This allows us to
4090edf67eSKonstantin Belousov 	 * support them both at the same time.
4190edf67eSKonstantin Belousov 	 * note: the union is not defined, though.
4290edf67eSKonstantin Belousov 	 */
4390edf67eSKonstantin Belousov 	__sigset_t	uc_sigmask;
4490edf67eSKonstantin Belousov 	mcontext_t	uc_mcontext;
4590edf67eSKonstantin Belousov 
4690edf67eSKonstantin Belousov 	struct __ucontext *uc_link;
4790edf67eSKonstantin Belousov 	struct __stack_t uc_stack;
4890edf67eSKonstantin Belousov 	int		uc_flags;
4990edf67eSKonstantin Belousov 	int		__spare__[4];
5090edf67eSKonstantin Belousov } ucontext_t;
5190edf67eSKonstantin Belousov 
5290edf67eSKonstantin Belousov #endif /* _SYS__UCONTEXT_H */
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