mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
32 lines
608 B
C
32 lines
608 B
C
/** @file
|
|
AsmReadPmc function
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
/**
|
|
Reads the current value of a Performance Counter (PMC).
|
|
|
|
Reads and returns the current value of performance counter specified by
|
|
Index. This function is only available on IA-32 and x64.
|
|
|
|
@param Index The 32-bit Performance Counter index to read.
|
|
|
|
@return The value of the PMC specified by Index.
|
|
|
|
**/
|
|
UINT64
|
|
EFIAPI
|
|
AsmReadPmc (
|
|
IN UINT32 Index
|
|
)
|
|
{
|
|
_asm {
|
|
mov ecx, Index
|
|
rdpmc
|
|
}
|
|
}
|
|
|