BT_STK_ENTER
BT_STK_ENTER(cp, h, indx, lock, ret);
BT_STK_ENTER(cp, h, recno * P_INDX, lock, ret);
BT_STK_ENTER(cp, h, recno, lock, ret);
BT_STK_ENTER(cp, h, indx, lock, ret);
BT_STK_ENTER(cp, h, base, lock, ret);
BT_STK_ENTER(cp, h, indx, lock, ret);
BT_STK_ENTER(cp, h, indx, lock, ret);
BT_STK_ENTER(c, pagep, page_indx, lock, ret); \