GSWAP4
result = GSWAP4(n & 0x0FFFFFFFF);
return result | GSWAP4(n >> 32);
counter = GSWAP4(block.x32[0]);
block.x32[0] = GSWAP4(counter);
data.counter = GSWAP4(counter);
data.counter = GSWAP4(counter);