mirror of https://github.com/acidanthera/audk.git
62 lines
1.9 KiB
NASM
62 lines
1.9 KiB
NASM
title CpuIoAccess.asm
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation
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; All rights reserved. This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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; CpuIoAccess.asm
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;
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; Abstract:
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; CPU IO Abstraction
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;
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;------------------------------------------------------------------------------
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.686
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.MODEL FLAT,C
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.CODE
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UINT8 TYPEDEF BYTE
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UINT16 TYPEDEF WORD
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UINT32 TYPEDEF DWORD
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UINT64 TYPEDEF QWORD
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UINTN TYPEDEF UINT32
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;------------------------------------------------------------------------------
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; UINT8
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; CpuIoRead8 (
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; IN UINT16 Port
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; )
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;------------------------------------------------------------------------------
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CpuIoRead8 PROC PUBLIC Port:UINT16
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mov dx, Port
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in al, dx
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ret
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CpuIoRead8 ENDP
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;------------------------------------------------------------------------------
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; VOID
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; CpuIoWrite8 (
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; IN UINT16 Port,
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; IN UINT32 Data
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; )
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;------------------------------------------------------------------------------
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CpuIoWrite8 PROC PUBLIC Port:UINT16, Data:UINT32
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mov eax, Data
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mov dx, Port
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out dx, al
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ret
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CpuIoWrite8 ENDP
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END |