mirror of https://github.com/acidanthera/audk.git
42 lines
1.4 KiB
ArmAsm
42 lines
1.4 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2008, 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.S
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#
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# Abstract:
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#
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# InternalSyncCompareExchange32 function
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#
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# Notes:
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#
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#------------------------------------------------------------------------------
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.globl ASM_PFX(InternalSyncCompareExchange32)
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#------------------------------------------------------------------------------
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# UINT32
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# EFIAPI
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# InternalSyncCompareExchange32 (
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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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ASM_PFX(InternalSyncCompareExchange32):
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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
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cmpxchgl %edx, (%ecx)
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ret
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