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6e3b8c47 | 1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
3 | ; Copyright (c) 2006, Intel Corporation\r | |
4 | ; All rights reserved. This program and the accompanying materials\r | |
5 | ; are licensed and made available under the terms and conditions of the BSD License\r | |
6 | ; which accompanies this distribution. The full text of the license may be found at\r | |
7 | ; http://opensource.org/licenses/bsd-license.php\r | |
8 | ;\r | |
9 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | ;\r | |
12 | ; Module Name:\r | |
13 | ;\r | |
14 | ; CompareMem.Asm\r | |
15 | ;\r | |
16 | ; Abstract:\r | |
17 | ;\r | |
18 | ; CompareMem function\r | |
19 | ;\r | |
20 | ; Notes:\r | |
21 | ;\r | |
22 | ; The following BaseMemoryLib instances share the same version of this file:\r | |
23 | ;\r | |
24 | ; BaseMemoryLibRepStr\r | |
25 | ; BaseMemoryLibMmx\r | |
26 | ; BaseMemoryLibSse2\r | |
27 | ;\r | |
28 | ;------------------------------------------------------------------------------\r | |
29 | \r | |
30 | .686\r | |
31 | .model flat,C\r | |
32 | .code\r | |
33 | \r | |
eb227e96 | 34 | ;------------------------------------------------------------------------------\r |
35 | ; INTN\r | |
36 | ; EFIAPI\r | |
37 | ; InternalMemCompareMem (\r | |
38 | ; IN CONST VOID *DestinationBuffer,\r | |
39 | ; IN CONST VOID *SourceBuffer,\r | |
40 | ; IN UINTN Length\r | |
41 | ; );\r | |
42 | ;------------------------------------------------------------------------------\r | |
6e3b8c47 | 43 | InternalMemCompareMem PROC USES esi edi\r |
44 | mov esi, [esp + 12]\r | |
45 | mov edi, [esp + 16]\r | |
46 | mov ecx, [esp + 20]\r | |
47 | repe cmpsb\r | |
48 | movzx eax, byte ptr [esi - 1]\r | |
49 | movzx edx, byte ptr [edi - 1]\r | |
50 | sub eax, edx\r | |
6e3b8c47 | 51 | ret\r |
52 | InternalMemCompareMem ENDP\r | |
53 | \r | |
54 | END\r |