section .asm

  global insb
  global insw

  global outb
  global outw

insb:
  push ebp
  mov ebp, esp

  xor eax, eax
  mov edx, [ebp + 8]
  in al, dx

  pop ebp
  ret

insw:
  push ebp
  mov ebp, esp

  xor eax, eax
  mov edx, [ebp + 8]
  in ax, dx

  pop ebp
  ret

outb:
  push ebp
  mov ebp, esp

  mov eax, [ebp + 12]
  mov edx, [ebp + 8]
  out dx, al

  pop ebp
  ret

outw: 
  push ebp
  mov ebp, esp

  mov eax, [ebp + 12]
  mov edx, [ebp + 8]
  out dx, ax

  pop ebp
  ret