MdePkg/Library/BaseMemoryLibMmx/Ia32/ScanMem64.S File Reference
Detailed Description
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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:
#
# ScanMem64.Asm
#
# Abstract:
#
# ScanMem64 function
#
# Notes:
#
# The following BaseMemoryLib instances contain the same copy of this file:
#
# BaseMemoryLibRepStr
# BaseMemoryLibMmx
# BaseMemoryLibSse2
# BaseMemoryLibOptDxe
# BaseMemoryLibOptPei
#
#------------------------------------------------------------------------------
ASM_GLOBAL
ASM_PFX(InternalMemScanMem64)
#------------------------------------------------------------------------------
# CONST VOID *
# EFIAPI
# InternalMemScanMem64 (
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT64 Value
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalMemScanMem64):
push edi
movl 12(esp), ecx
movl 16(esp), eax
movl 20(esp), edx
movl 8(esp), edi
L0:
cmpl (edi), eax
leal 8(edi), edi
loopne L0
jne L1
cmpl -4(edi), edx
jecxz L1
jne L0
L1:
leal -8(edi), eax
cmovne ecx, eax
pop edi
ret