.intel_syntax noprefix
    .text
    .global _start

    _start:
        xor rax,rax
        xor rdi,rdi

        # fd = sys.open(".", 0, 0)
        # rdi =filename
        # rsi = flags
        # rdx = mode
        # syscall n 2
        push    0x2e    # the ASCII code of '.' = current dir
        mov rdi,rsp
        xor rsi,rsi     # flags = 0
        xor rdx,rdx     # mode = 0
        inc rax            # syscall n 2
        inc rax
        syscall

        test rax,rax
        jz error

        mov rdi,rax     # fd

        # getdents (fd, where = esp, size = 0x100)
        # rdi = fd
        # rsi = buffer
        # rdx = count
        # syscall n 78
        mov dl, 0xfe    # size
        sub rsp,rdx     # room to stock
        mov rsi,rsp     # buffer address
        mov al,78       # syscall n 78
        syscall

        # size read
        mov rdx,rax

        # clean close
        # close (fd)
        # rdi = fd
        # syscall n 3
        xor rax,rax
        inc rax         # +1
        inc rax         # +1
        inc rax         # +1 => 3
        syscall

        # display
        # write (fd, buf, count)
        # rdi = out fd
        # rsi = buffer
        # rdx = count
        # syscall n 1
        mov rsi,rsp     # adr buf
        xor rax,rax
        inc rax         # syscall 1
        xor rdi,rdi     # out fd
        inc rdi         # n 1
        syscall

        # clean the stack
        add rsp,rdx     # on remonte de ce que on a lu

    error:
        # sys_exit
        # syscall n 60
        xor rax,rax
        mov al,60       # syscall n 60
        xor rdi,rdi     # error code
        syscall