DataTypes.nasm

global _start

section .text

_start:
    ;print on screen
    mov rax, 1
    mov rdi, 1
    mov rsi, hello_world
    mov rdx, length
    syscall

    mov rax, var4
    mov rax, [var4]

    ;exit gracefully
    mov rax, 60
    mov rdi, 11
    syscall

section .data

    hello_world: db 'Hello world to the SLAE-64 Course', 0xA
    length: equ $-hello_world

    var1: db 0x11, 0x22
    var2: dw 0x3344
    var3: dd 0xaabbccdd
    var4: dq 0xaabbccdd11223344

    repeat_buffer: times 128 db 0xAA

section .bss
    buffer: resb 64

nasm -f elf64 DataTypes.nasm -o DataTypes.o
ld DataTypes.o -o DataTypes
gdb ./DataTypes
break _start
run
disassemble
info variables