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 */ 30 31 #ifndef _SYS_UCONTEXT_H_ 32 #define _SYS_UCONTEXT_H_ 33 34 #ifndef _SYS_CDEFS_H_ 35 #include <sys/cdefs.h> 36 #endif 37 #ifndef _SYS_SIGNAL_H_ 38 #include <sys/signal.h> 39 #endif 40 #include <machine/ucontext.h> 41 42 typedef struct __ucontext { 43 /* 44 * Keep the order of the first two fields. Also, 45 * keep them the first two fields in the structure. 46 * This way we can have a union with struct 47 * sigcontext and ucontext_t. This allows us to 48 * support them both at the same time. 49 * note: the union is not defined, though. 50 */ 51 sigset_t uc_sigmask; 52 mcontext_t uc_mcontext; 53 54 struct __ucontext *uc_link; 55 stack_t uc_stack; 56 void (*uc_cofunc)(struct __ucontext *, void *); 57 void *uc_arg; 58 int __spare__[4]; 59 } ucontext_t; 60 61 #ifndef _KERNEL 62 63 __BEGIN_DECLS 64 65 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200809) 66 int getcontext(ucontext_t *) __returns_twice; 67 int setcontext(const ucontext_t *) __dead2; 68 void makecontext(ucontext_t *, void (*)(void), int, ...); 69 int swapcontext(ucontext_t *, const ucontext_t *); 70 #endif 71 #if __BSD_VISIBLE 72 void setcontext_quick(ucontext_t *); 73 void makecontext_quick(ucontext_t *); 74 void swapcontext_quick(ucontext_t *, ucontext_t *); 75 #endif 76 77 __END_DECLS 78 79 #endif /* !_KERNEL */ 80 81 #endif /* !_SYS_UCONTEXT_H_ */ 82