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1 ;------------------------------------------------------------------------------
2 ;
3 ; Copyright (c) 2006 - 2008, 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 ;   ScanMem64.Asm
15 ;
16 ; Abstract:
17 ;
18 ;   ScanMem64 function
19 ;
20 ; Notes:
21 ;
22 ;   The following BaseMemoryLib instances contain the same copy of this file:
23 ;
24 ;       BaseMemoryLibRepStr
25 ;       BaseMemoryLibMmx
26 ;       BaseMemoryLibSse2
27 ;       BaseMemoryLibOptDxe
28 ;       BaseMemoryLibOptPei
29 ;
30 ;------------------------------------------------------------------------------
31
32     .code
33
34 ;------------------------------------------------------------------------------
35 ; CONST VOID *
36 ; EFIAPI
37 ; InternalMemScanMem64 (
38 ;   IN      CONST VOID                *Buffer,
39 ;   IN      UINTN                     Length,
40 ;   IN      UINT64                    Value
41 ;   );
42 ;------------------------------------------------------------------------------
43 InternalMemScanMem64    PROC    USES    rdi
44     mov     rdi, rcx
45     mov     rax, r8
46     mov     rcx, rdx
47     repne   scasq
48     lea     rax, [rdi - 8]
49     cmovnz  rax, rcx
50     ret
51 InternalMemScanMem64    ENDP
52
53     END