SX_STB
sxm(SX_STB, dptr, 32, pre - 1);
sxm(SX_STB, dptr, 32, cnt - 1);
sxm(SX_STB, dptr, 32, 31);
sxm(SX_STB, dptr, 32, cnt - 1);
sxm(SX_STB, dd, r, in - 1);
sxm(SX_STB, dd, r, out - 1);
sxm(SX_STB, next, 8, in - 1);
sxm(SX_STB, next, reg, cnt - 1);