You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
948 B
38 lines
948 B
/** @file
|
|
AsmReadPmc function
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
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.
|
|
|
|
**/
|
|
|
|
/**
|
|
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
|
|
}
|
|
}
|
|
|