1#------------------------------------------------------------------------------ 2# 3# Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> 4# This program and the accompanying materials 5# are licensed and made available under the terms and conditions of the BSD License 6# which accompanies this distribution. The full text of the license may be found at 7# http://opensource.org/licenses/bsd-license.php. 8# 9# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11# 12# Module Name: 13# 14# ZeroMem.asm 15# 16# Abstract: 17# 18# ZeroMem function 19# 20# Notes: 21# 22#------------------------------------------------------------------------------ 23 24ASM_GLOBAL ASM_PFX(InternalMemZeroMem) 25 26#------------------------------------------------------------------------------ 27# VOID * 28# EFIAPI 29# InternalMemZeroMem ( 30# IN VOID *Buffer, 31# IN UINTN Count 32# ); 33#------------------------------------------------------------------------------ 34ASM_PFX(InternalMemZeroMem): 35 push %edi 36 movl 8(%esp), %edi 37 movl 12(%esp), %ecx 38 movl %ecx, %edx 39 shrl $3, %ecx 40 jz L_ZeroBytes 41 pxor %mm0, %mm0 42L0: 43 movq %mm0, (%edi) 44 addl $8, %edi 45 loop L0 46L_ZeroBytes: 47 andl $7, %edx 48 xorl %eax, %eax 49 movl %edx, %ecx 50 rep 51 stosb 52 movl 8(%esp), %eax 53 pop %edi 54 ret 55