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CpuException: Remove InitializeCpuInterruptHandlers 

InitializeCpuExceptionHandlers() expects caller allocates IDT while
InitializeCpuInterruptHandlers() allocates 256 IDT entries itself.

InitializeCpuExceptionHandlers() fills max 32 IDT entries allocated
by caller. If caller allocates 10 entries, the API just fills 10 IDT
entries.

The inconsistency between the two APIs makes code hard to
unerstand and hard to share.

Because there is only one caller (CpuDxe) for
InitializeCpuInterruptHandler(), this patch updates CpuDxe driver
to allocates 256 IDT entries then call
InitializeCpuExceptionHandlers().

This is also a backward compatible change.

With this change, InitializeCpuInterruptHandlers() is removed
completely.

And InitializeCpuExceptionHandlers() fills max 32 entries for PEI
and SMM instance, max 256 entries for DXE instance.
Such behavior matches to the original one.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Ray Ni 2022-05-18 17:51:21 +08:00 committed by mergify[bot]
parent 2fbc5ff0a5
commit 2a09527ebc
8 changed files with 56 additions and 262 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
MdeModulePkg/Include/Library/CpuExceptionHandlerLib.h
View File

@ -2,7 +2,7 @@
CPU Exception library provides the default CPU interrupt/exception handler.
It also provides capability to register user interrupt/exception handler.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -132,28 +132,6 @@ InitializeCpuExceptionHandlersEx (
IN CPU_EXCEPTION_INIT_DATA *InitData OPTIONAL
);
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
);
/**
Registers a function to be called from the processor interrupt handler.
@ -161,8 +139,8 @@ InitializeCpuInterruptHandlers (
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called

31
MdeModulePkg/Library/CpuExceptionHandlerLibNull/CpuExceptionHandlerLibNull.c
View File

@ -1,7 +1,7 @@
/** @file
CPU Exception Handler library implementition with empty functions.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -33,31 +33,6 @@ InitializeCpuExceptionHandlers (
return EFI_SUCCESS;
}
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
)
{
return EFI_SUCCESS;
}
/**
Registers a function to be called from the processor interrupt handler.
@ -65,8 +40,8 @@ InitializeCpuInterruptHandlers (
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called

33
UefiCpuPkg/CpuDxe/CpuDxe.c
View File

@ -1,7 +1,7 @@
/** @file
CPU DXE Module to produce CPU ARCH Protocol.
Copyright (c) 2008 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2008 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -10,6 +10,8 @@
#include "CpuMp.h"
#include "CpuPageTable.h"
#define CPU_INTERRUPT_NUM 256
//
// Global Variables
//
@ -924,9 +926,12 @@ InitInterruptDescriptorTable (
VOID
)
{
EFI_STATUS Status;
EFI_VECTOR_HANDOFF_INFO *VectorInfoList;
EFI_VECTOR_HANDOFF_INFO *VectorInfo;
EFI_STATUS Status;
EFI_VECTOR_HANDOFF_INFO *VectorInfoList;
EFI_VECTOR_HANDOFF_INFO *VectorInfo;
IA32_IDT_GATE_DESCRIPTOR *IdtTable;
IA32_DESCRIPTOR IdtDescriptor;
UINTN IdtEntryCount;
VectorInfo = NULL;
Status = EfiGetSystemConfigurationTable (&gEfiVectorHandoffTableGuid, (VOID **)&VectorInfoList);
@ -934,7 +939,25 @@ InitInterruptDescriptorTable (
VectorInfo = VectorInfoList;
}
Status = InitializeCpuInterruptHandlers (VectorInfo);
AsmReadIdtr (&IdtDescriptor);
IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
if (IdtEntryCount < CPU_INTERRUPT_NUM) {
//
// Increase Interrupt Descriptor Table and Copy the old IDT table in
//
IdtTable = AllocateZeroPool (sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM);
ASSERT (IdtTable != NULL);
CopyMem (IdtTable, (VOID *)IdtDescriptor.Base, sizeof (IA32_IDT_GATE_DESCRIPTOR) * IdtEntryCount);
//
// Load Interrupt Descriptor Table
//
IdtDescriptor.Base = (UINTN)IdtTable;
IdtDescriptor.Limit = (UINT16)(sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM - 1);
AsmWriteIdtr (&IdtDescriptor);
}
Status = InitializeCpuExceptionHandlers (VectorInfo);
ASSERT_EFI_ERROR (Status);
}

80
UefiCpuPkg/Library/CpuExceptionHandlerLib/DxeException.c
View File

@ -1,7 +1,7 @@
/** @file
CPU exception handler library implemenation for DXE modules.
Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -17,8 +17,8 @@ CONST UINTN mDoFarReturnFlag = 0;
RESERVED_VECTORS_DATA mReservedVectorsData[CPU_INTERRUPT_NUM];
EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_INTERRUPT_NUM];
EXCEPTION_HANDLER_DATA mExceptionHandlerData = {
0, // To be fixed
0, // To be fixed
CPU_INTERRUPT_NUM,
0, // To be fixed
mReservedVectorsData,
mExternalInterruptHandlerTable
};
@ -69,76 +69,6 @@ InitializeCpuExceptionHandlers (
return InitializeCpuExceptionHandlersWorker (VectorInfo, &mExceptionHandlerData);
}
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
)
{
EFI_STATUS Status;
IA32_IDT_GATE_DESCRIPTOR *IdtTable;
IA32_DESCRIPTOR IdtDescriptor;
UINTN IdtEntryCount;
EXCEPTION_HANDLER_TEMPLATE_MAP TemplateMap;
SetMem ((VOID *)mReservedVectorsData, sizeof (RESERVED_VECTORS_DATA) * CPU_INTERRUPT_NUM, 0xff);
if (VectorInfo != NULL) {
Status = ReadAndVerifyVectorInfo (VectorInfo, mReservedVectorsData, CPU_INTERRUPT_NUM);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
}
//
// Read IDT descriptor and calculate IDT size
//
AsmReadIdtr (&IdtDescriptor);
IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
if (IdtEntryCount > CPU_INTERRUPT_NUM) {
IdtEntryCount = CPU_INTERRUPT_NUM;
}
//
// Create Interrupt Descriptor Table and Copy the old IDT table in
//
IdtTable = AllocateZeroPool (sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM);
ASSERT (IdtTable != NULL);
CopyMem (IdtTable, (VOID *)IdtDescriptor.Base, sizeof (IA32_IDT_GATE_DESCRIPTOR) * IdtEntryCount);
AsmGetTemplateAddressMap (&TemplateMap);
ASSERT (TemplateMap.ExceptionStubHeaderSize <= HOOKAFTER_STUB_SIZE);
mExceptionHandlerData.IdtEntryCount = CPU_INTERRUPT_NUM;
InitializeSpinLock (&mExceptionHandlerData.DisplayMessageSpinLock);
UpdateIdtTable (IdtTable, &TemplateMap, &mExceptionHandlerData);
//
// Load Interrupt Descriptor Table
//
IdtDescriptor.Base = (UINTN)IdtTable;
IdtDescriptor.Limit = (UINT16)(sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM - 1);
AsmWriteIdtr ((IA32_DESCRIPTOR *)&IdtDescriptor);
return EFI_SUCCESS;
}
/**
Registers a function to be called from the processor interrupt handler.
@ -146,8 +76,8 @@ InitializeCpuInterruptHandlers (
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called

61
UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiCpuException.c
View File

@ -1,7 +1,7 @@
/** @file
CPU exception handler library implementation for PEIM module.
Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -133,6 +133,7 @@ InitializeCpuExceptionHandlers (
ExceptionHandlerData = AllocatePool (sizeof (EXCEPTION_HANDLER_DATA));
ASSERT (ExceptionHandlerData != NULL);
ExceptionHandlerData->IdtEntryCount = CPU_EXCEPTION_NUM;
ExceptionHandlerData->ReservedVectors = ReservedVectors;
ExceptionHandlerData->ExternalInterruptHandler = NULL;
InitializeSpinLock (&ExceptionHandlerData->DisplayMessageSpinLock);
@ -148,64 +149,6 @@ InitializeCpuExceptionHandlers (
return EFI_SUCCESS;
}
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
Registers a function to be called from the processor interrupt handler.
This function registers and enables the handler specified by InterruptHandler for a processor
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
when a processor interrupt occurs. If this parameter is NULL, then the handler
will be uninstalled.
@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
previously installed.
@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
previously installed.
@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,
or this function is not supported.
**/
EFI_STATUS
EFIAPI
RegisterCpuInterruptHandler (
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
)
{
return EFI_UNSUPPORTED;
}
/**
Initializes all CPU exceptions entries with optional extra initializations.

19
UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiDxeSmmCpuException.c
View File

@ -1,7 +1,7 @@
/** @file
CPU Exception Library provides PEI/DXE/SMM CPU common exception handler.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -261,31 +261,26 @@ InitializeCpuExceptionHandlersWorker (
RESERVED_VECTORS_DATA *ReservedVectors;
ReservedVectors = ExceptionHandlerData->ReservedVectors;
SetMem ((VOID *)ReservedVectors, sizeof (RESERVED_VECTORS_DATA) * CPU_EXCEPTION_NUM, 0xff);
SetMem ((VOID *)ReservedVectors, sizeof (RESERVED_VECTORS_DATA) * ExceptionHandlerData->IdtEntryCount, 0xff);
if (VectorInfo != NULL) {
Status = ReadAndVerifyVectorInfo (VectorInfo, ReservedVectors, CPU_EXCEPTION_NUM);
Status = ReadAndVerifyVectorInfo (VectorInfo, ReservedVectors, ExceptionHandlerData->IdtEntryCount);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
}
//
// Read IDT descriptor and calculate IDT size
// Setup the exception handlers according to IDT size, but no more than
// ExceptionHandlerData->IdtEntryCount (32 in PEI and SMM, 256 in DXE) handlers.
//
AsmReadIdtr (&IdtDescriptor);
IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
if (IdtEntryCount > CPU_EXCEPTION_NUM) {
//
// CPU exception library only setup CPU_EXCEPTION_NUM exception handler at most
//
IdtEntryCount = CPU_EXCEPTION_NUM;
}
IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
ExceptionHandlerData->IdtEntryCount = MIN (IdtEntryCount, ExceptionHandlerData->IdtEntryCount);
IdtTable = (IA32_IDT_GATE_DESCRIPTOR *)IdtDescriptor.Base;
AsmGetTemplateAddressMap (&TemplateMap);
ASSERT (TemplateMap.ExceptionStubHeaderSize <= HOOKAFTER_STUB_SIZE);
ExceptionHandlerData->IdtEntryCount = IdtEntryCount;
UpdateIdtTable (IdtTable, &TemplateMap, ExceptionHandlerData);
return EFI_SUCCESS;

31
UefiCpuPkg/Library/CpuExceptionHandlerLib/SecPeiCpuException.c
View File

@ -1,7 +1,7 @@
/** @file
CPU exception handler library implemenation for SEC/PEIM modules.
Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -166,31 +166,6 @@ InitializeCpuExceptionHandlers (
return EFI_SUCCESS;
}
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
Registers a function to be called from the processor interrupt handler.
@ -198,8 +173,8 @@ InitializeCpuInterruptHandlers (
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called

35
UefiCpuPkg/Library/CpuExceptionHandlerLib/SmmException.c
View File

@ -1,7 +1,7 @@
/** @file
CPU exception handler library implementation for SMM modules.
Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -14,8 +14,8 @@ CONST UINTN mDoFarReturnFlag = 1;
RESERVED_VECTORS_DATA mReservedVectorsData[CPU_EXCEPTION_NUM];
EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_EXCEPTION_NUM];
EXCEPTION_HANDLER_DATA mExceptionHandlerData = {
0, // To be fixed
0, // To be fixed
CPU_EXCEPTION_NUM,
0, // To be fixed
mReservedVectorsData,
mExternalInterruptHandlerTable
};
@ -62,31 +62,6 @@ InitializeCpuExceptionHandlers (
return InitializeCpuExceptionHandlersWorker (VectorInfo, &mExceptionHandlerData);
}
/**
Initializes all CPU interrupt/exceptions entries and provides the default interrupt/exception handlers.
Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS All CPU interrupt/exception entries have been successfully initialized
with default interrupt/exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
EFIAPI
InitializeCpuInterruptHandlers (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
/**
Registers a function to be called from the processor interrupt handler.
@ -94,8 +69,8 @@ InitializeCpuInterruptHandlers (
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
The installed handler is called once for each processor interrupt or exception.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() or
InitializeCpuInterruptHandlers() invoked, otherwise EFI_UNSUPPORTED returned.
NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
otherwise EFI_UNSUPPORTED returned.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called