Revert CpuId and CpuIdEx to r6213.

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / WriteMsr64.c

/** @file\r
  CpuBreakpoint function.\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
/**\r
  Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.\r
**/\r
void __writemsr (unsigned long Register, unsigned __int64 Value);\r
\r
#pragma intrinsic(__writemsr)\r
\r
/**\r
  Write data to MSR.\r
\r
  @param  Index                Register index of MSR.\r
  @param  Value                Data wants to be written.\r
\r
  @return Value written to MSR.\r
\r
**/\r
UINT64\r
EFIAPI\r
AsmWriteMsr64 (\r
  IN UINT32  Index,\r
  IN UINT64  Value\r
  )\r
{\r
  __writemsr (Index, Value);\r
  return Value;\r
}\r
\r