| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006, 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: | |
| ; | |
| ; ZeroMem.asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; ZeroMem function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| .686 | |
| .model flat,C | |
| .xmm | |
| .code | |
| ;------------------------------------------------------------------------------ | |
| ; VOID * | |
| ; _mem_ZeroMem ( | |
| ; IN VOID *Buffer, | |
| ; IN UINTN Count | |
| ; ) | |
| ;------------------------------------------------------------------------------ | |
| InternalMemZeroMem PROC USES edi | |
| mov edi, [esp + 8] | |
| mov ecx, [esp + 12] | |
| mov edx, ecx | |
| shr ecx, 3 | |
| jz @ZeroBytes | |
| pxor mm0, mm0 | |
| @@: | |
| movntq [edi], mm0 | |
| add edi, 8 | |
| loop @B | |
| mfence | |
| @ZeroBytes: | |
| and edx, 7 | |
| xor eax, eax | |
| mov ecx, edx | |
| rep stosb | |
| mov eax, [esp + 8] | |
| ret | |
| InternalMemZeroMem ENDP | |
| END |