0f7bccf584
Hide the Exception implementation details in CpuExcetionHandlerLib and caller only need to provide buffer Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Dandan Bi <dandan.bi@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
107 lines
4.1 KiB
C
107 lines
4.1 KiB
C
/** @file
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CPU Exception Handler library implementition with empty functions.
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Copyright (c) 2012 - 2022, 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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#include <PiPei.h>
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#include <Library/CpuExceptionHandlerLib.h>
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/**
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Initializes all CPU exceptions entries and provides the default exception handlers.
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Caller should try to get an array of interrupt and/or exception vectors that are in use and need to
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persist by EFI_VECTOR_HANDOFF_INFO defined in PI 1.3 specification.
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If caller cannot get reserved vector list or it does not exists, set VectorInfo to NULL.
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If VectorInfo is not NULL, the exception vectors will be initialized per vector attribute accordingly.
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@param[in] VectorInfo Pointer to reserved vector list.
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@retval EFI_SUCCESS CPU Exception Entries have been successfully initialized
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with default exception handlers.
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@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
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@retval EFI_UNSUPPORTED This function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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InitializeCpuExceptionHandlers (
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IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
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)
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{
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return EFI_SUCCESS;
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}
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/**
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Registers a function to be called from the processor interrupt handler.
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This function registers and enables the handler specified by InterruptHandler for a processor
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interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
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handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
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The installed handler is called once for each processor interrupt or exception.
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NOTE: This function should be invoked after InitializeCpuExceptionHandlers() is invoked,
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otherwise EFI_UNSUPPORTED returned.
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@param[in] InterruptType Defines which interrupt or exception to hook.
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@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
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when a processor interrupt occurs. If this parameter is NULL, then the handler
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will be uninstalled.
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@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
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@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
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previously installed.
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@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
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previously installed.
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@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,
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or this function is not supported.
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**/
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EFI_STATUS
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EFIAPI
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RegisterCpuInterruptHandler (
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IN EFI_EXCEPTION_TYPE InterruptType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Display processor context.
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@param[in] ExceptionType Exception type.
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@param[in] SystemContext Processor context to be display.
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**/
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VOID
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EFIAPI
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DumpCpuContext (
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EFI_SYSTEM_CONTEXT SystemContext
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)
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{
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}
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/**
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Setup separate stacks for certain exception handlers.
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If the input Buffer and BufferSize are both NULL, use global variable if possible.
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@param[in] Buffer Point to buffer used to separate exception stack.
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@param[in, out] BufferSize On input, it indicates the byte size of Buffer.
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If the size is not enough, the return status will
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be EFI_BUFFER_TOO_SMALL, and output BufferSize
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will be the size it needs.
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@retval EFI_SUCCESS The stacks are assigned successfully.
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@retval EFI_UNSUPPORTED This function is not supported.
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@retval EFI_BUFFER_TOO_SMALL This BufferSize is too small.
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**/
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EFI_STATUS
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EFIAPI
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InitializeSeparateExceptionStacks (
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IN VOID *Buffer,
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IN OUT UINTN *BufferSize
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)
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{
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return EFI_UNSUPPORTED;
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}
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