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;/*++
;
;Copyright (c) 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:
;
;EfiZeroMemRep4.asm
;
;Abstract:
;
;This is the code that uses rep stosd ZeroMem service
;
;--*/
;
;---------------------------------------------------------------------------
.686
.model flat,C
.code
;---------------------------------------------------------------------------
;#include "Tiano.h"
;
;VOID
;EfiCommonLibZeroMem (
;IN VOID *Buffer,
;IN UINTN Count
;)
;/*++
;
;Input: VOID *Buffer - Pointer to buffer to clear
;UINTN Count - Number of bytes to clear
;
;Output: None.
;
;Saves:
;
;Modifies:
;
;Description: This function uses rep stosd to zero memory.
;
;--*/
EfiCommonLibZeroMem PROC
push ebp
mov ebp,esp
push edi
mov ecx,dword ptr [ebp+0Ch]
test ecx, ecx
je Exit
xor eax, eax
mov edi,dword ptr [ebp+8]
mov edx, ecx
shr ecx, 2
and edx, 3
rep stosd
mov ecx, edx
rep stosb
Exit:
pop edi
pop ebp
ret
EfiCommonLibZeroMem ENDP
END
|
