if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

//go:nosplit
func get_PivotRootAddr() *(func(newroot string, oldroot string) (err error))

var PivotRoot = enter_PivotRoot

func enter_PivotRoot(newroot string, oldroot string) (err error) {
	funcref := get_PivotRootAddr()
	if funcptrtest(GetZosLibVec()+SYS___PIVOT_ROOT_A<<4, "") == 0 {
		*funcref = impl_PivotRoot
	} else {