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https://github.com/CloverHackyColor/CloverBootloader.git
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37 lines
1.0 KiB
NASM
37 lines
1.0 KiB
NASM
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
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; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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; Module Name:
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;
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; InterlockedCompareExchange16.Asm
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;
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; Abstract:
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;
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; InterlockedCompareExchange16 function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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DEFAULT REL
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SECTION .text
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;------------------------------------------------------------------------------
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; UINT16
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; EFIAPI
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; InternalSyncCompareExchange16 (
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; IN volatile UINT16 *Value,
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; IN UINT16 CompareValue,
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; IN UINT16 ExchangeValue
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(InternalSyncCompareExchange16)
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ASM_PFX(InternalSyncCompareExchange16):
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mov ax, dx
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lock cmpxchg [rcx], r8w
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ret
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