Make EfiRuntimeLib pass GCC.

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / RuntimeDxe / EfiRuntimeLib / ia32 / CpuFlushCache.S

#/*++
#
#Copyright (c) 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:
#
    #CpuFlushCache.c
#
#Abstract:
#
 #Cpu Flush Cache Function.
#
#--*/
#---------------------------------------------------------------------------
    .586p: 
    #.MODEL flat,C
    .code: 

#---------------------------------------------------------------------------
.globl ASM_PFX(EfiCpuFlushCache)

#
#//
#// Cache Flush Routine.
#//
#EFI_STATUS
#EfiCpuFlushCache (
  #IN EFI_PHYSICAL_ADDRESS          Start,
#  IN UINT64                        Length
  #)
#/*++
#
#Routine Description:
#
  #Flush cache with specified range.
#
#Arguments:
#
  #Start   - Start address
#  Length  - Length in bytes
#
#Returns:
#
  #Status code
#  
  #EFI_SUCCESS - success
#
#--*/
ASM_PFX(EfiCpuFlushCache):
    wbinvd
    xorl                    %eax, %eax
    ret