mirror of https://github.com/acidanthera/audk.git
107 lines
4.1 KiB
C
107 lines
4.1 KiB
C
/** @file
|
|
CPU Exception Handler library implementition with empty functions.
|
|
|
|
Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
#include <PiPei.h>
|
|
#include <Library/CpuExceptionHandlerLib.h>
|
|
|
|
/**
|
|
Initializes all CPU exceptions entries and provides the default 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 CPU Exception Entries have been successfully initialized
|
|
with default 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
|
|
InitializeCpuExceptionHandlers (
|
|
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
|
|
)
|
|
{
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
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() 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
|
|
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;
|
|
}
|
|
|
|
/**
|
|
Display processor context.
|
|
|
|
@param[in] ExceptionType Exception type.
|
|
@param[in] SystemContext Processor context to be display.
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
DumpCpuContext (
|
|
IN EFI_EXCEPTION_TYPE ExceptionType,
|
|
IN EFI_SYSTEM_CONTEXT SystemContext
|
|
)
|
|
{
|
|
}
|
|
|
|
/**
|
|
Setup separate stacks for certain exception handlers.
|
|
If the input Buffer and BufferSize are both NULL, use global variable if possible.
|
|
|
|
@param[in] Buffer Point to buffer used to separate exception stack.
|
|
@param[in, out] BufferSize On input, it indicates the byte size of Buffer.
|
|
If the size is not enough, the return status will
|
|
be EFI_BUFFER_TOO_SMALL, and output BufferSize
|
|
will be the size it needs.
|
|
|
|
@retval EFI_SUCCESS The stacks are assigned successfully.
|
|
@retval EFI_UNSUPPORTED This function is not supported.
|
|
@retval EFI_BUFFER_TOO_SMALL This BufferSize is too small.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InitializeSeparateExceptionStacks (
|
|
IN VOID *Buffer,
|
|
IN OUT UINTN *BufferSize
|
|
)
|
|
{
|
|
return EFI_UNSUPPORTED;
|
|
}
|