uc_fpstate
if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
__copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4,