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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; SetMem32.nasm
;
; Abstract:
;
; SetMem32 function
;
; Notes:
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; VOID *
; EFIAPI
; InternalMemSetMem32 (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT32 Value
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
push 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 .0
shr ecx, 2
cmp ecx, edx
cmova ecx, edx
sub edx, ecx
rep stosd
.0:
mov ecx, edx
and edx, 15
shr ecx, 4
jz @SetDwords
movd xmm0, eax
pshufd xmm0, xmm0, 0
.1:
movntdq [edi], xmm0
movntdq [edi + 16], xmm0
movntdq [edi + 32], xmm0
movntdq [edi + 48], xmm0
add edi, 64
loop .1
mfence
@SetDwords:
mov ecx, edx
rep stosd
mov eax, [esp + 8]
pop edi
ret
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