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;   CompareMem.Asm
15;
16; Abstract:
17;
18;   CompareMem 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    .686
33    .model  flat,C
34    .code
35
36;------------------------------------------------------------------------------
37; INTN
38; EFIAPI
39; InternalMemCompareMem (
40;   IN      CONST VOID                *DestinationBuffer,
41;   IN      CONST VOID                *SourceBuffer,
42;   IN      UINTN                     Length
43;   );
44;------------------------------------------------------------------------------
45InternalMemCompareMem   PROC    USES    esi edi
46    mov     esi, [esp + 12]
47    mov     edi, [esp + 16]
48    mov     ecx, [esp + 20]
49    repe    cmpsb
50    movzx   eax, byte ptr [esi - 1]
51    movzx   edx, byte ptr [edi - 1]
52    sub     eax, edx
53    ret
54InternalMemCompareMem   ENDP
55
56    END
57