L1_PAD_BOUNDARY
nh_len = L1_PAD_BOUNDARY; /* be seen, comment out this case */
nh_len = ((len + (L1_PAD_BOUNDARY - 1)) & ~(L1_PAD_BOUNDARY - 1));
nh_len = ((len + (L1_PAD_BOUNDARY - 1)) & ~(L1_PAD_BOUNDARY - 1));
nh_len = ((hc->next_data_empty + (L1_PAD_BOUNDARY - 1)) &
~(L1_PAD_BOUNDARY - 1));
nh_len = L1_PAD_BOUNDARY;
zero_pad(hc->data, L1_PAD_BOUNDARY);