diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiZeroMemRep4.asm')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiZeroMemRep4.asm | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiZeroMemRep4.asm b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiZeroMemRep4.asm new file mode 100644 index 0000000000..4817c10354 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/EfiZeroMemRep4.asm @@ -0,0 +1,70 @@ +;/*++
+;
+;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
|