--- Libc/Libc-262/include/ucontext.h
+++ Libc/Libc-825.24/include/ucontext.h
@@ -1,28 +1,60 @@
 /*
- * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2002, 2008, 2009 Apple Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
  */
 
+/*
+ * These routines are DEPRECATED and should not be used.
+ */
 #ifndef _UCONTEXT_H_
 #define _UCONTEXT_H_
 
+#include <sys/cdefs.h>
+
+//Begin-Libc
+#ifdef __LIBC__
 #include <sys/ucontext.h>
+__BEGIN_DECLS
+int  getcontext(ucontext_t *);
+void makecontext(ucontext_t *, void (*)(), int, ...);
+int  setcontext(const ucontext_t *);
+int  swapcontext(ucontext_t * __restrict, const ucontext_t * __restrict);
+__END_DECLS
+#else /* !__LIBC__ */
+//End-Libc
+#ifdef _XOPEN_SOURCE
+#include <sys/ucontext.h>
+#include <Availability.h>
+
+__BEGIN_DECLS
+int  getcontext(ucontext_t *) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_5, __MAC_10_6, __IPHONE_2_0, __IPHONE_2_0);
+void makecontext(ucontext_t *, void (*)(), int, ...) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_5, __MAC_10_6, __IPHONE_2_0, __IPHONE_2_0);
+int  setcontext(const ucontext_t *) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_5, __MAC_10_6, __IPHONE_2_0, __IPHONE_2_0);
+int  swapcontext(ucontext_t * __restrict, const ucontext_t * __restrict) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_5, __MAC_10_6, __IPHONE_2_0, __IPHONE_2_0);
+__END_DECLS
+#else /* !_XOPEN_SOURCE */
+#error The deprecated ucontext routines require _XOPEN_SOURCE to be defined
+#endif /* _XOPEN_SOURCE */
+//Begin-Libc
+#endif /* __LIBC__ */
+//End-Libc
 
 #endif /* _UCONTEXT_H_ */