mirror of https://github.com/acidanthera/audk.git
120 lines
3.5 KiB
NASM
120 lines
3.5 KiB
NASM
|
title CpuIoAccess.asm
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
;*
|
||
|
|
;* Copyright (c) 2005, Intel Corporation
|
||
|
|
;* All rights reserved. This program and the accompanying materials
|
||
|
|
;* are licensed and made available under the terms and conditions of the BSD License
|
||
|
|
;* which accompanies this distribution. The full text of the license may be found at
|
||
|
|
;* http://opensource.org/licenses/bsd-license.php
|
||
|
|
;*
|
||
|
|
;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||
|
|
;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||
|
|
;*
|
||
|
|
;* Module Name:
|
||
|
|
;* CpuIoAccess.asm
|
||
|
|
;*
|
||
|
|
;* Abstract:
|
||
|
|
;* Supports IA32 CPU IO operation
|
||
|
|
;*
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
;
|
||
|
|
;
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
.686
|
||
|
|
.MODEL FLAT,C
|
||
|
|
.CODE
|
||
|
|
|
||
|
|
|
||
|
|
UINT8 TYPEDEF BYTE
|
||
|
|
UINT16 TYPEDEF WORD
|
||
|
|
UINT32 TYPEDEF DWORD
|
||
|
|
UINT64 TYPEDEF QWORD
|
||
|
|
UINTN TYPEDEF UINT32
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; UINT8
|
||
|
|
; CpuIoRead8 (
|
||
|
|
; IN UINT16 Port
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoRead8 PROC PUBLIC Port:UINT16
|
||
|
|
mov dx, Port
|
||
|
|
in al, dx
|
||
|
|
ret
|
||
|
|
CpuIoRead8 ENDP
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; UINT16
|
||
|
|
; CpuIoRead16 (
|
||
|
|
; IN UINT16 Port
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoRead16 PROC PUBLIC Port:UINT16
|
||
|
|
mov dx, Port
|
||
|
|
in ax, dx
|
||
|
|
ret
|
||
|
|
CpuIoRead16 ENDP
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; UINT32
|
||
|
|
; CpuIoRead32 (
|
||
|
|
; IN UINT16 Port
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoRead32 PROC PUBLIC Port:UINT16
|
||
|
|
mov dx, Port
|
||
|
|
in eax, dx
|
||
|
|
ret
|
||
|
|
CpuIoRead32 ENDP
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; VOID
|
||
|
|
; CpuIoWrite8 (
|
||
|
|
; IN UINT16 Port,
|
||
|
|
; IN UINT32 Data
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoWrite8 PROC PUBLIC Port:UINT16, Data:UINT32
|
||
|
|
mov eax, Data
|
||
|
|
mov dx, Port
|
||
|
|
out dx, al
|
||
|
|
ret
|
||
|
|
CpuIoWrite8 ENDP
|
||
|
|
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; VOID
|
||
|
|
; CpuIoWrite16 (
|
||
|
|
; IN UINT16 Port,
|
||
|
|
; IN UINT32 Data
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoWrite16 PROC PUBLIC Port:UINT16, Data:UINT32
|
||
|
|
mov eax, Data
|
||
|
|
mov dx, Port
|
||
|
|
out dx, ax
|
||
|
|
ret
|
||
|
|
CpuIoWrite16 ENDP
|
||
|
|
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; VOID
|
||
|
|
; CpuIoWrite32 (
|
||
|
|
; IN UINT16 Port,
|
||
|
|
; IN UINT32 Data
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
CpuIoWrite32 PROC PUBLIC Port:UINT16, Data:UINT32
|
||
|
|
mov eax, Data
|
||
|
|
mov dx, Port
|
||
|
|
out dx, eax
|
||
|
|
ret
|
||
|
|
CpuIoWrite32 ENDP
|
||
|
|
|
||
|
|
|
||
|
|
END
|