/*++ 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.c Abstract: This is the code that uses rep stosd ZeroMem service --*/ #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. --*/ { __asm { mov ecx, Count test ecx, ecx je Exit xor eax, eax mov edi, Buffer mov edx, ecx shr ecx, 2 and edx, 3 rep stosd mov ecx, edx rep stosb Exit: } }