--- src/sys/sys/ucontext.h	2006/05/20 02:42:13	1.3
+++ src/sys/sys/ucontext.h	2007/01/16 07:16:21	1.4
@@ -56,4 +56,15 @@ typedef struct __ucontext {
 	int		__spare__[8];
 } ucontext_t;
 
+#ifndef _KERNEL
+ 
+__BEGIN_DECLS
+  
+int	getcontext(ucontext_t *);
+int	setcontext(const ucontext_t *);
+void	makecontext(ucontext_t *, void (*)(void), int, ...);
+int	swapcontext(ucontext_t *, const ucontext_t *);
+   
+__END_DECLS
+
 #endif /* !_SYS_UCONTEXT_H_ */