78 lines
1.3 KiB
NASM
78 lines
1.3 KiB
NASM
; io_port.asm - This file is a part of NutsOS
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; NutsOS
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; Copyright (C) 2013 Free Software Foundation, Inc.
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; NutsOS is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 3 of the License, or
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; (at your option) any later version.
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; NutsOS is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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; You should have received a copy of the GNU General Public License along
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; with NutsOS; If not, see <http://www.gnu.org/licenses/>.
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; Valentin Verdier <valentin.verdier03@gmail.com>
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[BITS 32]
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[SECTION .text]
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global _out, _in, _outw, _inw, _outdw, _indw
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_out:
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push eax
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push edx
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mov dx, [esp+12]
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mov al, [esp+16]
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out dx, al
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pop edx
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pop eax
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ret
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_in:
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push edx
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xor eax, eax
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mov dx, [esp+8]
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in al, dx
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pop edx
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ret
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_outw:
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push eax
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push edx
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mov dx, [esp+12]
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mov ax, [esp+16]
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out dx, ax
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pop edx
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pop eax
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ret
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_inw:
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push edx
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xor eax, eax
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mov dx, [esp+8]
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in ax, dx
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pop edx
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ret
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_outdw:
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push eax
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push edx
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mov dx, [esp+12]
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mov eax, [esp+16]
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out dx, eax
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pop edx
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pop eax
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ret
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_indw:
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push edx
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mov dx, [esp+8]
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in eax, dx
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pop edx
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ret
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