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UefiCpuPkg/CpuExceptionHandlerLib: Support IA32 processors without DE or FXSAVE/FXRESTOR

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Use CPUID Leaf 01 to detect support for debug extensions and FXSAVE/FXRESTOR instructions.
Do not enable those features in CR4 if they are not supported.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>





git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17221 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Michael Kinney
2015-04-27 19:54:52 +00:00
committed by mdkinney
parent 5f72e68c90
commit 087c67d0a0
5 changed files with 59 additions and 12 deletions
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4
UefiCpuPkg/Library/CpuExceptionHandlerLib/DxeCpuExceptionHandlerLib.inf
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@@ -1,7 +1,7 @@
## @file
# CPU Exception Handler library instance for DXE modules.
#
# Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2013 - 2015, 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
@@ -18,7 +18,7 @@
MODULE_UNI_FILE = DxeCpuExceptionHandlerLib.uni
FILE_GUID = B6E9835A-EDCF-4748-98A8-27D3C722E02D
MODULE_TYPE = DXE_DRIVER
VERSION_STRING = 1.0
VERSION_STRING = 1.1
LIBRARY_CLASS = CpuExceptionHandlerLib|DXE_CORE DXE_DRIVER UEFI_APPLICATION
#