    .file "test_7.asm"
    .data
str:
    .ascii "hello "
    .ascii "world!"
    .byte 0x0a
    .text
    .global _start
_start:

    movq $1, %rax
    movq $1, %rdi
    leaq str(%rip), %rsi
    movq $13, %rdx
    syscall

    //exit
    movq $60, %rax
    movq $0, %rdi
    syscall

