audk/MdePkg/Library/BaseLib/X64/ReadMsr64.c

/** @file
  CpuBreakpoint function.

  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

/**
  Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
**/

unsigned __int64 __readmsr (int register);

#pragma intrinsic(__readmsr)

/**
  Read data to MSR.

  @param  Index                Register index of MSR.

  @return Value read from MSR.

**/
UINT64
EFIAPI
AsmReadMsr64 (
  IN UINT32  Index
  )
{
  return __readmsr (Index);
}