mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-28 12:25:19 +01:00
38 lines
795 B
C
38 lines
795 B
C
/** @file
|
|
AsmReadMsr64 function
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
|
|
|
|
|
|
/**
|
|
Returns a 64-bit Machine Specific Register(MSR).
|
|
|
|
Reads and returns the 64-bit MSR specified by Index. No parameter checking is
|
|
performed on Index, and some Index values may cause CPU exceptions. The
|
|
caller must either guarantee that Index is valid, or the caller must set up
|
|
exception handlers to catch the exceptions. This function is only available
|
|
on IA-32 and x64.
|
|
|
|
@param Index The 32-bit MSR index to read.
|
|
|
|
@return The value of the MSR identified by Index.
|
|
|
|
**/
|
|
UINT64
|
|
EFIAPI
|
|
AsmReadMsr64 (
|
|
IN UINT32 Index
|
|
)
|
|
{
|
|
_asm {
|
|
mov ecx, Index
|
|
rdmsr
|
|
}
|
|
}
|
|
|