| ;------------------------------------------------------------------------------ | |
| ; | |
| ; 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: | |
| ; | |
| ; SetMem.asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; SetMem function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| .686 | |
| .model flat,C | |
| .xmm | |
| .code | |
| ;------------------------------------------------------------------------------ | |
| ; VOID * | |
| ; _mem_SetMem ( | |
| ; IN VOID *Buffer, | |
| ; IN UINTN Count, | |
| ; IN UINT8 Value | |
| ; ) | |
| ;------------------------------------------------------------------------------ | |
| InternalMemSetMem PROC USES edi | |
| mov ecx, [esp + 12] ; ecx <- Count | |
| mov edi, [esp + 8] ; edi <- Buffer | |
| mov edx, ecx | |
| shr ecx, 3 ; # of Qwords to set | |
| mov al, [esp + 16] ; al <- Value | |
| jz @SetBytes | |
| mov ah, al ; ax <- Value | (Value << 8) | |
| push ecx | |
| push ecx | |
| movq [esp], mm0 ; save mm0 | |
| movd mm0, eax | |
| pshufw mm0, mm0, 0 ; fill mm0 with 8 Value's | |
| @@: | |
| movntq [edi], mm0 | |
| add edi, 8 | |
| loop @B | |
| mfence | |
| movq mm0, [esp] ; restore mm0 | |
| pop ecx ; stack cleanup | |
| pop ecx | |
| @SetBytes: | |
| and edx, 7 | |
| mov ecx, edx | |
| rep stosb | |
| mov eax, [esp + 8] ; eax <- Buffer as return value | |
| ret | |
| InternalMemSetMem ENDP | |
| END |