X86 INSTRUCTIONS:::DATA TRANSFER INSTRUCTION:::3- MOVE WITH ZERO EXTEND

Move Zero Extend : Syntax : movz src, dest #GAS Syntax movzx dest, src #Intel syntax The movz instruction copies the src operand in the dest operand and pads the remaining bits not provided by src with zeros (0). This instruction is useful for copying a small, unsigned value to a bigger register. Operands arg1 Register Memory arg2 Register Modified flags No FLAGS are modified by this instruction Example : .data byteval: .byte 204 .text .global _start _start: movzbw byteval, %ax # %eax is now 204 movzwl %ax, %ebx # %ebx is now 204 movzbl byteval, %esi # %esi is now 204 # Linux sys_exit mov $1, %eax xorl %ebx, %ebx int $0x80