audk/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S

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#------------------------------------------------------------------------------
#
# 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 *
# _mem_SetMem32 (
# IN VOID *Buffer,
# IN UINTN Count,
# IN UINT32 Value
# )
#------------------------------------------------------------------------------
.global _InternalMemSetMem32
_InternalMemSetMem32:
push %edi
movl 12(%esp), %edx
movl 8(%esp), %edi
movl %edx, %ecx
shrl %ecx
movd 16(%esp), %mm0
movl %edi, %eax
jz @SetDwords
pshufw $0x44, %mm0, %mm0
L0:
movntq %mm0, (%edi)
addl $8, %edi
loopl L0
mfence
@SetDwords:
testb $1, %dl
jz @F
movd %mm0, (%edi)
L1:
pop %edi
ret