Question

Consider the following code: Id x6,0(x7) sw x6,8(x7) Assume that the register x7 contains the address 0x10000000 and the data address is 0xF36629CE561234BB. What is the value stored in 0x10000008 on big-Endian machine? What is the value stored in 0x10000008 on little-Endian machine?

Answer 1

On a big-Endian machine, the value stored in 0x10000008 is 0xF36629CE561234BB. On a little-Endian machine, the value stored in 0x10000008 is 0xBB123456CE2966F3.

Step-by-step explanation:

On a big-Endian machine, the value stored in 0x10000008 would be 0xF36629CE561234BB. This is because big-Endian machines store the most significant byte of a word in the lowest memory address. So, when we store the data address 0xF36629CE561234BB at 0x10000000 and use the instruction sw (store word) to store the content of register x6 at address x7+8, which gives us 0x10000008, the value remains the same.

However, on a little-Endian machine, the value stored in 0x10000008 would be 0xBB123456CE2966F3. Little-Endian machines store the least significant byte of a word in the lowest memory address. So, when we store the data address 0xF36629CE561234BB at 0x10000000, the bytes are flipped, and the value at 0x10000008 is rearranged to reflect this.