audk/MdePkg/Library/BaseLib/X64/WriteMsr64.c

43 lines
1.0 KiB
C

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