Exception.c File Reference

#include "CpuDxe.h"
#include <Library/CpuExceptionHandlerLib.h>
#include <Guid/VectorHandoffTable.h>

Go to the source code of this file.

Functions
EFI_STATUS	InitializeExceptions (IN EFI_CPU_ARCH_PROTOCOL *Cpu)
EFI_STATUS	RegisterInterruptHandler (IN EFI_EXCEPTION_TYPE InterruptType, IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler)

Detailed Description

Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
Portions Copyright (c) 2011 - 2021, Arm Limited. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Exception.c.

Function Documentation

InitializeExceptions()

EFI_STATUS InitializeExceptions

(

IN EFI_CPU_ARCH_PROTOCOL *

gCpu

)

Initialize interrupt handling for DXE phase.

Parameters

Cpu	A pointer of EFI_CPU_ARCH_PROTOCOL instance.

Returns

VOID.

Definition at line 15 of file Exception.c.

RegisterInterruptHandler()

EFI_STATUS RegisterInterruptHandler	(	IN EFI_EXCEPTION_TYPE	InterruptType,
		IN EFI_CPU_INTERRUPT_HANDLER	InterruptHandler
	)

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.

Parameters

InterruptType	A pointer to the processor's current interrupt state. Set to TRUE if interrupts are enabled and FALSE if interrupts are disabled.
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.

Return values

EFI_SUCCESS	The handler for the processor interrupt was successfully installed or uninstalled.
EFI_ALREADY_STARTED	InterruptHandler is not NULL, and a handler for InterruptType was previously installed.
EFI_INVALID_PARAMETER	InterruptHandler is NULL, and a handler for InterruptType was not previously installed.
EFI_UNSUPPORTED	The interrupt specified by InterruptType is not supported.

Definition at line 93 of file Exception.c.