mirror of https://github.com/acidanthera/audk.git
65 lines
2.0 KiB
ArmAsm
65 lines
2.0 KiB
ArmAsm
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#------------------------------------------------------------------------------
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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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# InterlockedCompareExchange32.Asm
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#
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# Abstract:
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#
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# InterlockedCompareExchange32 function
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#
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# Notes:
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#
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# VOID *
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# EFIAPI
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# InterlockedCompareExchangePointer (
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# IN VOID **Value,
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# IN VOID *CompareValue,
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# IN VOID *ExchangeValue
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# );
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#------------------------------------------------------------------------------
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.global _InterlockedCompareExchangePointer
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_InterlockedCompareExchangePointer:
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#
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# InterlockedCompareExchangePointer() shares the same code as
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# InterlockedCompareExchange32() on IA32 and thus no code inside this
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# function
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#
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#------------------------------------------------------------------------------
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# UINT32
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# EFIAPI
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# InterlockedCompareExchange32 (
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# IN UINT32 *Value,
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# IN UINT32 CompareValue,
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# IN UINT32 ExchangeValue
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# );
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#------------------------------------------------------------------------------
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.global _InterlockedCompareExchange32
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_InterlockedCompareExchange32:
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movl 4(%esp),%ecx
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movl 8(%esp),%eax
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movl 12(%esp),%edx
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lock cmpxchgl %edx,(%ecx)
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ret
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