section .data
msg db  "Hello, World!", 0x0a   ; Hello, World! and newline
len equ $-msg           ; Length of msg

section .text
    global _start

_start:
    mov cx, 9

    loop_start:
        push    cx
        add     ecx, 0x30
        push    cx

        mov eax, 0x04
        mov ebx, 0x01
        mov ecx, esp
        mov edx, 0x01
        int     0x80
        pop     cx  ; pop non-ascii value

        pop     cx
        dec     cx
        cmp cx, 0x00
        jge     loop_start

    ; write newline
    push    0x0a
    mov eax, 0x04
    mov ebx, 0x01
    mov ecx, esp
    mov edx, 0x01
    int     0x80

    mov     eax, 0x01   ; sys_exit
    mov ebx, 0x00   ; no file descriptor
    int     0x80