x86, um: take arch/um/include/* out of the way

We can't just plop asm/* into it - userland helpers are built with it
in search path and seeing asm/* show up there suddenly would be a bad
idea.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/um/include/shared/longjmp.h

@@ -0,0 +1,23 @@
+#ifndef __UML_LONGJMP_H
+#define __UML_LONGJMP_H
+
+#include "sysdep/archsetjmp.h"
+#include "os.h"
+
+extern int setjmp(jmp_buf);
+extern void longjmp(jmp_buf, int);
+
+#define UML_LONGJMP(buf, val) do { \
+	longjmp(*buf, val);	\
+} while(0)
+
+#define UML_SETJMP(buf) ({ \
+	int n;	   \
+	volatile int enable;	\
+	enable = get_signals(); \
+	n = setjmp(*buf); \
+	if(n != 0) \
+		set_signals(enable); \
+	n; })
+
+#endif