mirror of https://github.com/acidanthera/audk.git
53 lines
1.5 KiB
ArmAsm
53 lines
1.5 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.Asm
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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 share the same version 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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#
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#------------------------------------------------------------------------------
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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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.global _InternalMemCompareMem;
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_InternalMemCompareMem:
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push %rsi
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push %rdi
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mov %rcx, %rsi
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mov %rdx, %rdi
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mov %r8, %rcx
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repe cmpsb
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movzbq -1(%rsi), %rax
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movzbq -1(%rdi), %rdx
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sub %rdx, %rax
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pop %rdi
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pop %rsi
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ret
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