Systems & hardware

x86 Assembly

x86 assembly language is a family of backward-compatible assembly languages, which provide some level of compatibility all the way back to the Intel 8008 introduced in April 1972. x86 assembly languages are used to produce object code for the x86 class of processors.

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Created by: Intel
First appeared: 1978
Official resource: Visit the main website

Your first program

Hello, World!

x86 Assembly

section .data
    hello db 'Hello, World!',0

section .text
    global _start

_start:
    mov edx, 13          ; message length
    mov ecx, hello       ; message to write
    mov ebx, 1           ; file descriptor (stdout)
    mov eax, 4           ; system call number (sys_write)
    int 0x80             ; call kernel

    ; Exit
    mov eax, 1           ; system call number (sys_exit)
    xor ebx, ebx         ; exit code 0
    int 0x80             ; call kernel