audk/MdePkg/Library/BaseMemoryLibSse2/X64/ZeroMem.S

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ArmAsm
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#
# ConvertAsm.py: Automatically generated from ZeroMem.asm
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2009, 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.S
#
# Abstract:
#
# ZeroMem function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# VOID *
# InternalMemZeroMem (
# IN VOID *Buffer,
# IN UINTN Count
# );
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(InternalMemZeroMem)
ASM_PFX(InternalMemZeroMem):
pushq %rdi
movq %rcx, %rdi
xorq %rcx, %rcx
xorl %eax, %eax
subq %rdi, %rcx
andq $15, %rcx
movq %rdi, %r8
jz L0
cmpq %rdx, %rcx
cmova %rdx, %rcx
subq %rcx, %rdx
rep stosb
L0:
movq %rdx, %rcx
andl $15, %edx
shrq $4, %rcx
jz L_ZeroBytes
pxor %xmm0, %xmm0
L1:
movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned
addq $16, %rdi
loop L1
mfence
L_ZeroBytes:
movl %edx, %ecx
rep stosb
movq %r8, %rax
popq %rdi
ret