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 * $FreeBSD$ 31 */ 32 33 #ifndef _SYS_UCONTEXT_H_ 34 #define _SYS_UCONTEXT_H_ 35 36 #include <sys/signal.h> 37 #include <machine/ucontext.h> 38 #include <sys/_ucontext.h> 39 40 #define UCF_SWAPPED 0x00000001 /* Used by swapcontext(3). */ 41 42 #ifndef _KERNEL 43 44 __BEGIN_DECLS 45 46 int getcontext(ucontext_t *) __returns_twice; 47 ucontext_t *getcontextx(void); 48 int setcontext(const ucontext_t *); 49 void makecontext(ucontext_t *, void (*)(void), int, ...); 50 int signalcontext(ucontext_t *, int, __sighandler_t *); 51 int swapcontext(ucontext_t *, const ucontext_t *); 52 53 #if __BSD_VISIBLE 54 int __getcontextx_size(void); 55 int __fillcontextx(char *ctx) __returns_twice; 56 int __fillcontextx2(char *ctx); 57 #endif 58 59 __END_DECLS 60 61 #else /* _KERNEL */ 62 63 struct thread; 64 65 /* 66 * Flags for get_mcontext(). The low order 4 bits (i.e a mask of 0x0f) are 67 * reserved for use by machine independent code. All other bits are for use 68 * by machine dependent code. 69 */ 70 #define GET_MC_CLEAR_RET 1 71 72 /* Machine-dependent functions: */ 73 int get_mcontext(struct thread *, mcontext_t *, int); 74 int set_mcontext(struct thread *, mcontext_t *); 75 76 #endif /* !_KERNEL */ 77 78 #endif /* !_SYS_UCONTEXT_H_ */ 79