MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.S File Reference


Detailed Description

#------------------------------------------------------------------------------
#
# 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:
#
# SetMem64.S
#
# Abstract:
#
# SetMem64 function
#
# Notes:
#
#------------------------------------------------------------------------------

ASM_GLOBAL ASM_PFX(InternalMemSetMem64)

#------------------------------------------------------------------------------
# VOID *
# EFIAPI
# InternalMemSetMem64 (
# IN VOID *Buffer,
# IN UINTN Count,
# IN UINT64 Value
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalMemSetMem64):
movl 4(esp), eax
movl 8(esp), ecx
testb $8, al
movl eax, edx
movq 0xc(esp), xmm0
jz L1
movq xmm0, (edx)
addl $8, edx
decl ecx
L1:
shrl ecx
jz L_SetQwords
movlhps xmm0, xmm0
L2:
movntdq xmm0, (edx)
leal 16(edx), edx
loop L2
mfence
L_SetQwords:
jnc L3
movq xmm0, (edx)
L3:
ret


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