.section .text
.globl _start
_start:

    # Open file
    movq 16(%rsp), %rdi # Select first argument as file name
    movq $0, %rsi       # Select read only
    movq $0, %rdx       # Unused mode for read only
    movq $2, %rax       # Select open syscall
    syscall             # Open file, file descriptor returned in rax

    movq %rax, %rdi     # Save file descriptor in r15
    call parse_file

    movq $60, %rax      # Select exit syscall
    movq $0, %rdi       # Exit code 0
    syscall