/* $NetBSD: ucontext.h,v 1.11 2008/10/15 06:51:21 wrstuden Exp $ */ /*- * Copyright (c) 1999, 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Klaus Klein, and by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _SYS_UCONTEXT_H_ #define _SYS_UCONTEXT_H_ #include <sys/sigtypes.h> #include <machine/mcontext.h> typedef struct __ucontext ucontext_t; struct __ucontext { unsigned int uc_flags; /* properties */ ucontext_t * uc_link; /* context to resume */ sigset_t uc_sigmask; /* signals blocked in this context */ stack_t uc_stack; /* the stack used by this context */ mcontext_t uc_mcontext; /* machine state */ #if defined(_UC_MACHINE_PAD) long __uc_pad[_UC_MACHINE_PAD]; #endif }; #ifndef _UC_UCONTEXT_ALIGN #define _UC_UCONTEXT_ALIGN (~0) #endif /* uc_flags */ #define _UC_SIGMASK 0x01 /* valid uc_sigmask */ #define _UC_STACK 0x02 /* valid uc_stack */ #define _UC_CPU 0x04 /* valid GPR context in uc_mcontext */ #define _UC_FPU 0x08 /* valid FPU context in uc_mcontext */ #ifdef _KERNEL struct lwp; void getucontext(struct lwp *, ucontext_t *); void getucontext_sa(struct lwp *, ucontext_t *); int setucontext(struct lwp *, const ucontext_t *); void cpu_getmcontext(struct lwp *, mcontext_t *, unsigned int *); int cpu_setmcontext(struct lwp *, const mcontext_t *, unsigned int); #endif /* _KERNEL */ #endif /* !_SYS_UCONTEXT_H_ */