#include "sys.h"
.globl	_vfork
.globl	_errno

_vfork:
	mov	(sp)+,r1
	sys	vfork
	br	1f
	bec	2f
3:	mov	r0,_errno
	mov	$-1,r0
	jmp	(r1)

1:			/ child, or vfork systemcall does not exist
	bes	3b
	clr	r0
2:
	jmp	(r1)