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

//go:nosplit
func get_DirfdAddr() *(func(dirp uintptr) (fd int, err error))

var Dirfd = enter_Dirfd

func enter_Dirfd(dirp uintptr) (fd int, err error) {
	funcref := get_DirfdAddr()
	if funcptrtest(GetZosLibVec()+SYS_DIRFD<<4, "") == 0 {
		*funcref = impl_Dirfd
	} else {
		*funcref = error_Dirfd
	}