;------------------------------------------------------------------------------ | |
; | |
; 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: | |
; | |
; SetMem32.asm | |
; | |
; Abstract: | |
; | |
; SetMem32 function | |
; | |
; Notes: | |
; | |
;------------------------------------------------------------------------------ | |
.686 | |
.model flat,C | |
.xmm | |
.code | |
;------------------------------------------------------------------------------ | |
; VOID * | |
; EFIAPI | |
; InternalMemSetMem32 ( | |
; IN VOID *Buffer, | |
; IN UINTN Count, | |
; IN UINT32 Value | |
; ); | |
;------------------------------------------------------------------------------ | |
InternalMemSetMem32 PROC USES edi | |
mov edx, [esp + 12] | |
mov edi, [esp + 8] | |
xor ecx, ecx | |
sub ecx, edi | |
and ecx, 15 ; ecx + edi aligns on 16-byte boundary | |
mov eax, [esp + 16] | |
jz @F | |
shr ecx, 2 | |
cmp ecx, edx | |
cmova ecx, edx | |
sub edx, ecx | |
rep stosd | |
@@: | |
mov ecx, edx | |
and edx, 3 | |
shr ecx, 2 | |
jz @SetDwords | |
movd xmm0, eax | |
pshufd xmm0, xmm0, 0 | |
@@: | |
movntdq [edi], xmm0 | |
add edi, 16 | |
loop @B | |
mfence | |
@SetDwords: | |
mov ecx, edx | |
rep stosd | |
mov eax, [esp + 8] | |
ret | |
InternalMemSetMem32 ENDP | |
END |