Question

computer organization Write this code using x86 assembly language using the irvine32 library

10) In write a procedure that swaps to different values (Do NOT use the XCHG instruction). (7pts )

Answer 1

swap function to swap two integers in X86-64 GCC 87.2 code:

swap(int, int):

push rbp

mov rbp, rsp

mov DWORD PTR [rbp-20], edi

mov DWORD PTR [rbp-24], esi

mov eax, DWORD PTR [rbp-20]

mov DWORD PTR [rbp-4], eax

mov eax, DWORD PTR [rbp-24]

mov DWORD PTR [rbp-20], eax

mov eax, DWORD PTR [rbp-4]

mov DWORD PTR [rbp-24], eax

nop

pop rbp

ret

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