9344f09215
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
38 lines
795 B
C
38 lines
795 B
C
/** @file
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AsmReadMsr64 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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Returns a 64-bit Machine Specific Register(MSR).
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Reads and returns the 64-bit MSR specified by Index. No parameter checking is
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performed on Index, and some Index values may cause CPU exceptions. The
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caller must either guarantee that Index is valid, or the caller must set up
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exception handlers to catch the exceptions. This function is only available
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on IA-32 and x64.
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@param Index The 32-bit MSR index to read.
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@return The value of the MSR identified by Index.
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**/
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UINT64
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EFIAPI
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AsmReadMsr64 (
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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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rdmsr
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}
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}
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