+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution. The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php.\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+; CompareMem.Asm\r
+;\r
+; Abstract:\r
+;\r
+; CompareMem function\r
+;\r
+; Notes:\r
+;\r
+; The following BaseMemoryLib instances contain the same copy of this file:\r
+;\r
+; BaseMemoryLibRepStr\r
+; BaseMemoryLibMmx\r
+; BaseMemoryLibSse2\r
+; BaseMemoryLibOptDxe\r
+; BaseMemoryLibOptPei\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+ SECTION .text\r
+\r
+;------------------------------------------------------------------------------\r
+; INTN\r
+; EFIAPI\r
+; InternalMemCompareMem (\r
+; IN CONST VOID *DestinationBuffer,\r
+; IN CONST VOID *SourceBuffer,\r
+; IN UINTN Length\r
+; );\r
+;------------------------------------------------------------------------------\r
+global ASM_PFX(InternalMemCompareMem)\r
+ASM_PFX(InternalMemCompareMem):\r
+ push esi\r
+ push edi\r
+ mov esi, [esp + 12]\r
+ mov edi, [esp + 16]\r
+ mov ecx, [esp + 20]\r
+ repe cmpsb\r
+ movzx eax, byte [esi - 1]\r
+ movzx edx, byte [edi - 1]\r
+ sub eax, edx\r
+ pop edi\r
+ pop esi\r
+ ret\r
+\r