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UefiCpuPkg: Add ExceptionHandlerData for ArchSaveExceptionContext()

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mReservedVectors is not set, we could add parameter ExceptionHandlerData for
ArchSaveExceptionContext() that could use it instead of mReservedVectors.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
This commit is contained in:
Jeff Fan
2016-11-30 15:04:32 +08:00
parent 1e09ec0946
commit 81b21fc250
4 changed files with 39 additions and 29 deletions
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26
UefiCpuPkg/Library/CpuExceptionHandlerLib/Ia32/ArchExceptionHandler.c
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@@ -1,7 +1,7 @@
/** @file
IA32 CPU Exception Handler functons.
Copyright (c) 2012 - 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012 - 2016, 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
@@ -50,24 +50,28 @@ ArchGetIdtHandler (
/**
Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
@param ExceptionType Exception type.
@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
@param[in] ExceptionType Exception type.
@param[in] SystemContext Pointer to EFI_SYSTEM_CONTEXT.
@param[in] ExceptionHandlerData Pointer to exception handler data.
**/
VOID
ArchSaveExceptionContext (
IN UINTN ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
IN UINTN ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext,
IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData
)
{
IA32_EFLAGS32 Eflags;
RESERVED_VECTORS_DATA *ReservedVectors;
ReservedVectors = ExceptionHandlerData->ReservedVectors;
//
// Save Exception context in global variable
//
mReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextIa32->Eflags;
mReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextIa32->Cs;
mReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextIa32->Eip;
mReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextIa32->ExceptionData;
ReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextIa32->Eflags;
ReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextIa32->Cs;
ReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextIa32->Eip;
ReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextIa32->ExceptionData;
//
// Clear IF flag to avoid old IDT handler enable interrupt by IRET
//
@@ -77,7 +81,7 @@ ArchSaveExceptionContext (
//
// Modify the EIP in stack, then old IDT handler will return to the stub code
//
SystemContext.SystemContextIa32->Eip = (UINTN) mReservedVectors[ExceptionType].HookAfterStubHeaderCode;
SystemContext.SystemContextIa32->Eip = (UINTN) ReservedVectors[ExceptionType].HookAfterStubHeaderCode;
}
/**