UefiCpuPkg/CpuExceptionHandlerLib: Support IA32 processors without DE or FXSAVE/FXRESTOR
authorMichael Kinney <michael.d.kinney@intel.com>
Mon, 27 Apr 2015 19:54:52 +0000 (19:54 +0000)
committermdkinney <mdkinney@Edk2>
Mon, 27 Apr 2015 19:54:52 +0000 (19:54 +0000)
commit087c67d0a0847f61b70fa565361ff88fe80e46e5
tree5e7b4a2fa22862d31c1b41770c6c7bfdc8b59c4a
parent5f72e68c9067ae5b8cfa7c935db81002cb22e00f
UefiCpuPkg/CpuExceptionHandlerLib: Support IA32 processors without DE or FXSAVE/FXRESTOR

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
UefiCpuPkg/Library/CpuExceptionHandlerLib/DxeCpuExceptionHandlerLib.inf
UefiCpuPkg/Library/CpuExceptionHandlerLib/Ia32/ExceptionHandlerAsm.S
UefiCpuPkg/Library/CpuExceptionHandlerLib/Ia32/ExceptionHandlerAsm.asm
UefiCpuPkg/Library/CpuExceptionHandlerLib/SecPeiCpuExceptionHandlerLib.inf
UefiCpuPkg/Library/CpuExceptionHandlerLib/SmmCpuExceptionHandlerLib.inf