#------------------------------------------------------------------------------

#

# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>

# 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:

#

#------------------------------------------------------------------------------

ASM_GLOBAL ASM_PFX(InternalMemZeroMem)

#------------------------------------------------------------------------------

# VOID *

# EFIAPI

# InternalMemZeroMem (

# IN VOID *Buffer,

# IN UINTN Count

# );

#------------------------------------------------------------------------------

ASM_PFX(InternalMemZeroMem):

push %edi

movl 8(%esp), %edi

movl 12(%esp), %edx

xorl %ecx, %ecx

subl %edi, %ecx

xorl %eax, %eax

andl $15, %ecx

jz L0

cmpl %edx, %ecx

cmova %edx, %ecx

subl %ecx, %edx

rep

stosb

L0:

movl %edx, %ecx

andl $15, %edx

shrl $4, %ecx

jz L_ZeroBytes

pxor %xmm0, %xmm0

L1:

movntdq %xmm0, (%edi)

addl $16, %edi

loop L1

mfence

L_ZeroBytes:

movl %edx, %ecx

rep

stosb

movl 8(%esp), %eax

pop %edi

ret