1# 2# ConvertAsm.py: Automatically generated from ZeroMem.asm 3# 4#------------------------------------------------------------------------------ 5# 6# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR> 7# This program and the accompanying materials 8# are licensed and made available under the terms and conditions of the BSD License 9# which accompanies this distribution. The full text of the license may be found at 10# http://opensource.org/licenses/bsd-license.php. 11# 12# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14# 15# Module Name: 16# 17# ZeroMem.S 18# 19# Abstract: 20# 21# ZeroMem function 22# 23# Notes: 24# 25#------------------------------------------------------------------------------ 26 27 28#------------------------------------------------------------------------------ 29# VOID * 30# InternalMemZeroMem ( 31# IN VOID *Buffer, 32# IN UINTN Count 33# ); 34#------------------------------------------------------------------------------ 35ASM_GLOBAL ASM_PFX(InternalMemZeroMem) 36ASM_PFX(InternalMemZeroMem): 37 pushq %rdi 38 movq %rcx, %rdi 39 xorq %rcx, %rcx 40 xorl %eax, %eax 41 subq %rdi, %rcx 42 andq $15, %rcx 43 movq %rdi, %r8 44 jz L0 45 cmpq %rdx, %rcx 46 cmova %rdx, %rcx 47 subq %rcx, %rdx 48 rep stosb 49L0: 50 movq %rdx, %rcx 51 andl $15, %edx 52 shrq $4, %rcx 53 jz L_ZeroBytes 54 pxor %xmm0, %xmm0 55L1: 56 movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned 57 addq $16, %rdi 58 loop L1 59 mfence 60L_ZeroBytes: 61 movl %edx, %ecx 62 rep stosb 63 movq %r8, %rax 64 popq %rdi 65 ret 66