PE2) Big Endian To Little Endian – X86 Assembly (MASM)

Use MOV instructions to copy the value from bigEndian to littleEndian, reversing the order of the bytes. The number’s 32-bit value is 12345678h.

; Program Name:  bigEndian to LittleEndian
; Description: 

.386
.model flat,stdcall
.stack 4096
ExitProcess PROTO, dwExitCode:DWORD

.data
bigEndian BYTE 12h,34h,56h,78h
littleEndian BYTE 0

.code
main PROC
	mov al,[bigEndian+3]
	mov littleEndian,al

	mov al,[bigEndian+2]
	mov littleEndian+1,al

	mov al,[bigEndian+1]
	mov littleEndian+2,al

	mov al,[bigEndian]
	mov littleEndian+3,al

INVOKE ExitProcess,0
main ENDP
END main

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