Use a loop with indirect addressing to reverse the elements of an integer array

Question

Use a loop with indirect addressing to reverse the elements of an integer array in place. - Do not copy the elements to any other array. - Use the SIZEOF, TYPE, and LENGTHOF operators to make the program as flexible as possible if the array size and type should be changed in the future. - Use the XCHG instruction. - The array is a 32-bit variable. - The array's elements are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12. - The array's elements after running the program should look like: 2, 1, 4, 3, 6, 5, 8, 7, 10, 9, 12, 11. Submit the following: Lastname2.asm

Explanation / Answer

.DATA

array dword 1, 2, 3, 4,5,6,7,8,9,10,11,12

.CODE
main PROC

mov ecx, 2
mov esi, 3
mov edi, 0

L1:
mov eax, array[esi * type array ]
xchg eax, array[edi]
mov array[esi * lengthof array ], eax
mov edi, type array
mov esi, 2

loop L1
call dumpregs

; check
mov eax, array
mov ebx, array[4]
mov ecx, array[8]
mov edx, array[12]
call dumpregs

exit
main ENDP
END main

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