mirror of https://github.com/acidanthera/audk.git
56 lines
1.7 KiB
ArmAsm
56 lines
1.7 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# CompareMem.S
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#
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# Abstract:
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#
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# CompareMem function
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#
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# Notes:
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#
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# The following BaseMemoryLib instances contain the same copy of this file:
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#
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# BaseMemoryLibRepStr
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# BaseMemoryLibMmx
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# BaseMemoryLibSse2
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# BaseMemoryLibOptDxe
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# BaseMemoryLibOptPei
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#
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#------------------------------------------------------------------------------
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.globl ASM_PFX(InternalMemCompareMem)
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#------------------------------------------------------------------------------
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# INTN
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# EFIAPI
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# InternalMemCompareMem (
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# IN CONST VOID *DestinationBuffer,
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# IN CONST VOID *SourceBuffer,
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# IN UINTN Length
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# );
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#------------------------------------------------------------------------------
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ASM_PFX(InternalMemCompareMem):
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push %esi
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push %edi
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movl 12(%esp), %esi
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movl 16(%esp), %edi
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movl 20(%esp), %ecx
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repe cmpsb
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movzbl -1(%esi), %eax
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movzbl -1(%edi), %edx
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subl %edx, %eax
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pop %edi
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pop %esi
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ret
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