| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; CompareMem.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; CompareMem function | |
| ; | |
| ; Notes: | |
| ; | |
| ; The following BaseMemoryLib instances contain the same copy of this file: | |
| ; | |
| ; BaseMemoryLibRepStr | |
| ; BaseMemoryLibMmx | |
| ; BaseMemoryLibSse2 | |
| ; BaseMemoryLibOptDxe | |
| ; BaseMemoryLibOptPei | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; INTN | |
| ; EFIAPI | |
| ; InternalMemCompareMem ( | |
| ; IN CONST VOID *DestinationBuffer, | |
| ; IN CONST VOID *SourceBuffer, | |
| ; IN UINTN Length | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(InternalMemCompareMem) | |
| ASM_PFX(InternalMemCompareMem): | |
| push esi | |
| push edi | |
| mov esi, [esp + 12] | |
| mov edi, [esp + 16] | |
| mov ecx, [esp + 20] | |
| repe cmpsb | |
| movzx eax, byte [esi - 1] | |
| movzx edx, byte [edi - 1] | |
| sub eax, edx | |
| pop edi | |
| pop esi | |
| ret | |