mirror of https://github.com/acidanthera/audk.git
59 lines
1.4 KiB
ArmAsm
59 lines
1.4 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# 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:
|
|
#
|
|
# ZeroMem.asm
|
|
#
|
|
# Abstract:
|
|
#
|
|
# ZeroMem function
|
|
#
|
|
# Notes:
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
.686:
|
|
#.MODEL flat,C
|
|
.xmm:
|
|
.code:
|
|
|
|
#------------------------------------------------------------------------------
|
|
# VOID *
|
|
# _mem_ZeroMem (
|
|
# IN VOID *Buffer,
|
|
# IN UINTN Count
|
|
# )
|
|
#------------------------------------------------------------------------------
|
|
.global _InternalMemZeroMem
|
|
_InternalMemZeroMem:
|
|
push %edi
|
|
movl 8(%esp), %edi
|
|
movl 12(%esp), %ecx
|
|
movl %ecx, %edx
|
|
shrl $3, %ecx
|
|
jz @ZeroBytes
|
|
pxor %mm0, %mm0
|
|
L0:
|
|
movntq %mm0, (%edi)
|
|
addl $8, %edi
|
|
loop L0
|
|
mfence
|
|
@ZeroBytes:
|
|
andl $7, %edx
|
|
xorl %eax, %eax
|
|
movl %edx, %ecx
|
|
rep
|
|
stosb
|
|
movl 8(%esp), %eax
|
|
pop %edi
|
|
ret
|