%macro scall 4
    mov rax,%1
    mov rdi,%2
    mov rsi,%3
    mov rdx,%4
    syscall
%endmacro

section .bss
    buf resb 4

section .data
    m1 db "Enter a 64 bit number:",10d,13d
    l1 equ $-m1

    m2 db "The 64 bit number is:",10d,13d
    l2 equ $-m2

section .text
    global _start

_start:
    scall 1,1,m1,l1
    scall 0,0,buf,17

    scall 1,1,m2,l2
    scall 1,1,buf,16

    mov rax,60
    mov rdi,0
    syscall