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