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/** @file
CpuBreakpoint function.
Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
/**
Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/
#include <Library/RegisterFilterLib.h>
void
__writemsr (
unsigned long Register,
unsigned __int64 Value
);
#pragma intrinsic(__writemsr)
/**
Write data to MSR.
@param Index The register index of MSR.
@param Value Data wants to be written.
@return Value written to MSR.
**/
UINT64
EFIAPI
AsmWriteMsr64 (
IN UINT32 Index,
IN UINT64 Value
)
{
BOOLEAN Flag;
Flag = FilterBeforeMsrWrite (Index, &Value);
if (Flag) {
__writemsr (Index, Value);
}
FilterAfterMsrWrite (Index, &Value);
return Value;
}
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