emlxs_get_attention
static uint32_t emlxs_get_attention(emlxs_hba_t *hba,
ha_copy = emlxs_get_attention(hba, -1);
ha_copy = emlxs_get_attention(hba, -1);
ha_copy = emlxs_get_attention(hba, msgid);
ha_copy = emlxs_get_attention(hba, -1);