/* * Copyright (c) 2007, 2009 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #define _XOPEN_SOURCE 600L #include <ucontext.h> #include <errno.h> #if defined(__x86_64__) || defined(__i386__) #include <stddef.h> #include <signal.h> extern int _setcontext(const void *); int setcontext(const ucontext_t *uctx) { mcontext_t mctx = (mcontext_t)&uctx->__mcontext_data; ucontext_t *_uctx = (ucontext_t *)uctx; if (mctx != _uctx->uc_mcontext) _uctx->uc_mcontext = mctx; sigprocmask(SIG_SETMASK, &uctx->uc_sigmask, NULL); #if defined(__x86_64__) return _setcontext(mctx); #else return _setcontext(uctx); #endif } #else int setcontext(const ucontext_t *uctx) { errno = ENOTSUP; return -1; } #endif