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;------------------------------------------------------------------------------
36AsmFlushCacheLine   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
53AsmFlushCacheLine   ENDP
54
55    END
56