1 ;------------------------------------------------------------------------------ 2 ; 3 ; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR> 4 ; This program and the accompanying materials 5 ; are licensed and made available under the terms and conditions of the BSD License 6 ; which accompanies this distribution. The full text of the license may be found at 7 ; http://opensource.org/licenses/bsd-license.php. 8 ; 9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 ; 12 ; Module Name: 13 ; 14 ; FlushCacheLine.Asm 15 ; 16 ; Abstract: 17 ; 18 ; AsmFlushCacheLine function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 .586P 25 .model flat,C 26 .xmm 27 .code 28 29 ;------------------------------------------------------------------------------ 30 ; VOID * 31 ; EFIAPI 32 ; AsmFlushCacheLine ( 33 ; IN VOID *LinearAddress 34 ; ); 35 ;------------------------------------------------------------------------------ 36 AsmFlushCacheLine PROC 37 ; 38 ; If the CPU does not support CLFLUSH instruction, 39 ; then promote flush range to flush entire cache. 40 ; 41 mov eax, 1 42 push ebx 43 cpuid 44 pop ebx 45 mov eax, [esp + 4] 46 test edx, BIT19 47 jz @F 48 clflush [eax] 49 ret 50 @@: 51 wbinvd 52 ret 53 AsmFlushCacheLine ENDP 54 55 END 56
