MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S File Reference
Detailed Description
#
# ConvertAsm.py: Automatically generated from
SetMem.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:
#
# SetMem.S
#
# Abstract:
#
# SetMem function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# VOID *
# EFIAPI
# InternalMemSetMem (
# IN VOID *Buffer,
# IN UINTN Count,
# IN UINT8 Value
# )
#------------------------------------------------------------------------------
ASM_GLOBAL
ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
push rdi
movq r8, rax
movb al, ah
movd rax, mm0
movq rcx, r8
movq r8, rdi # rdi <- Buffer
movq rdx, rcx
andq $7, rdx
shrq $3, rcx
jz L_SetBytes
.byte 0x0f, 0x70, 0x0C0, 0x00
L0:
movntq mm0, (rdi)
addq $8, rdi
loop L0
mfence
L_SetBytes:
movl edx, ecx
rep stosb
movq r8, rax
pop rdi
ret