2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1999 Marcel Moolenaar
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
31 #ifndef _SYS_UCONTEXT_H_
32 #define _SYS_UCONTEXT_H_
34 #include <sys/signal.h>
35 #include <machine/ucontext.h>
36 #include <sys/_ucontext.h>
38 #define UCF_SWAPPED 0x00000001 /* Used by swapcontext(3). */
44 int getcontext(ucontext_t *) __returns_twice;
45 ucontext_t *getcontextx(void);
46 int setcontext(const ucontext_t *);
47 void makecontext(ucontext_t *, void (*)(void), int, ...);
48 int signalcontext(ucontext_t *, int, __sighandler_t *);
49 int swapcontext(ucontext_t *, const ucontext_t *);
52 int __getcontextx_size(void);
53 int __fillcontextx(char *ctx) __returns_twice;
54 int __fillcontextx2(char *ctx);
64 * Flags for get_mcontext(). The low order 4 bits (i.e a mask of 0x0f) are
65 * reserved for use by machine independent code. All other bits are for use
66 * by machine dependent code.
68 #define GET_MC_CLEAR_RET 1
70 /* Machine-dependent functions: */
71 int get_mcontext(struct thread *, mcontext_t *, int);
72 int set_mcontext(struct thread *, mcontext_t *);
76 #endif /* !_SYS_UCONTEXT_H_ */