MdePkg/Library/BaseMemoryLibSse2/X64/SetMem16.S File Reference
Detailed Description
#
# ConvertAsm.py: Automatically generated from
SetMem16.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:
#
# SetMem16.S
#
# Abstract:
#
# SetMem16 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# VOID *
# EFIAPI
# InternalMemSetMem16 (
# IN VOID *Buffer,
# IN UINTN Count,
# IN UINT16 Value
# )
#------------------------------------------------------------------------------
ASM_GLOBAL
ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
pushq rdi
movq rcx, rdi
movq rdi, r9
xorq rcx, rcx
subq rdi, rcx
andq $15, rcx
movq r8, rax
jz L0
shrq $1, rcx
cmpq rdx, rcx
cmova rdx, rcx
subq rcx, rdx
rep stosw
L0:
movq rdx, rcx
andl $7, edx
shrq $3, rcx
jz L_SetWords
movd eax, xmm0
pshuflw $0, xmm0, xmm0
movlhps xmm0, xmm0
L1:
movntdq xmm0, (rdi)
addq $16, rdi
loop L1
mfence
L_SetWords:
movl edx, ecx
rep stosw
movq r9, rax
popq rdi
ret