title CpuIoAccess.asm | |
;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2006 - 2007, 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: | |
; CPU IO Abstraction | |
; | |
;------------------------------------------------------------------------------ | |
.code | |
;------------------------------------------------------------------------------ | |
; UINT8 | |
; CpuIoRead8 ( | |
; UINT16 Port // rcx | |
; ) | |
;------------------------------------------------------------------------------ | |
CpuIoRead8 PROC PUBLIC | |
xor eax, eax | |
mov dx, cx | |
in al, dx | |
ret | |
CpuIoRead8 ENDP | |
;------------------------------------------------------------------------------ | |
; VOID | |
; CpuIoWrite8 ( | |
; UINT16 Port, // rcx | |
; UINT32 Data // rdx | |
; ) | |
;------------------------------------------------------------------------------ | |
CpuIoWrite8 PROC PUBLIC | |
mov eax, edx | |
mov dx, cx | |
out dx, al | |
ret | |
CpuIoWrite8 ENDP | |
END |