; io_port.asm - This file is a part of NutsOS

; NutsOS
; Copyright (C) 2013  Free Software Foundation, Inc.

; NutsOS is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 3 of the License, or
; (at your option) any later version.

; NutsOS is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.

; You should have received a copy of the GNU General Public License along
; with NutsOS; If not, see <http://www.gnu.org/licenses/>.

; Valentin Verdier <valentin.verdier03@gmail.com>

[BITS 32]
[SECTION .text]

global _out, _in, _outw, _inw, _outdw, _indw

_out:
	push eax
	push edx
	mov dx, [esp+12]
	mov al, [esp+16]
	out dx, al
	pop edx
	pop eax
	ret

_in:
	push edx
	xor eax, eax
	mov dx, [esp+8]
	in al, dx
	pop edx
	ret

_outw:
	push eax
	push edx
	mov dx, [esp+12]
	mov ax, [esp+16]
	out dx, ax
	pop edx
	pop eax
	ret

_inw:
	push edx
	xor eax, eax
	mov dx, [esp+8]
	in ax, dx
	pop edx
	ret

_outdw:
	push eax
	push edx
	mov dx, [esp+12]
	mov eax, [esp+16]
	out dx, eax
	pop edx
	pop eax
	ret

_indw:
	push edx
	mov dx, [esp+8]
	in eax, dx
	pop edx
	ret