#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/PrintLib.h>
#include <Library/ArmDisassemblerLib.h>
#include <Library/SerialPortLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Guid/DebugImageInfoTable.h>
#include <Protocol/DebugSupport.h>
#include <Protocol/LoadedImage.h>

Macros
#define	MAX_PRINT_CHARS 100

Functions
CHAR8 *	GetImageName (IN UINTN FaultAddress, OUT UINTN ImageBase, OUT UINTN PeCoffSizeOfHeaders)

STATIC VOID	DescribeInstructionOrDataAbort (IN CHAR8 *AbortType, IN UINTN Iss)

STATIC VOID	DescribeExceptionSyndrome (IN UINT32 Esr)

STATIC CONST CHAR8 *	BaseName (IN CONST CHAR8 *FullName)

VOID	DefaultExceptionHandler (IN EFI_EXCEPTION_TYPE ExceptionType, IN OUT EFI_SYSTEM_CONTEXT SystemContext)

Variables
STATIC CHAR8 *	gExceptionTypeString []

STATIC BOOLEAN	mRecursiveException

Detailed Description

Default exception handler

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

Definition in file DefaultExceptionHandler.c.

Macro Definition Documentation

◆ MAX_PRINT_CHARS

#define MAX_PRINT_CHARS 100

Definition at line 29 of file DefaultExceptionHandler.c.

Function Documentation

◆ BaseName()

STATIC CONST CHAR8 * BaseName ( IN CONST CHAR8 * FullName )

Definition at line 162 of file DefaultExceptionHandler.c.

◆ DefaultExceptionHandler()

VOID DefaultExceptionHandler	(	IN EFI_EXCEPTION_TYPE	ExceptionType,
		IN OUT EFI_SYSTEM_CONTEXT	SystemContext
	)

This is the default action to take on an unexpected exception

Since this is exception context don't do anything crazy like try to allocate memory.

Parameters

ExceptionType	Type of the exception
SystemContext	Register state at the time of the Exception

Definition at line 189 of file DefaultExceptionHandler.c.

◆ DescribeExceptionSyndrome()

STATIC VOID DescribeExceptionSyndrome ( IN UINT32 Esr )

Definition at line 130 of file DefaultExceptionHandler.c.

◆ DescribeInstructionOrDataAbort()

STATIC VOID DescribeInstructionOrDataAbort	(	IN CHAR8 *	AbortType,
		IN UINTN	Iss
	)

Definition at line 49 of file DefaultExceptionHandler.c.

◆ GetImageName()

CHAR8 * GetImageName	(	IN UINTN	FaultAddress,
		OUT UINTN *	ImageBase,
		OUT UINTN *	PeCoffSizeOfHeaders
	)

Use the EFI Debug Image Table to lookup the FaultAddress and find which PE/COFF image it came from. As long as the PE/COFF image contains a debug directory entry a string can be returned. For ELF and Mach-O images the string points to the Mach-O or ELF image. Microsoft tools contain a pointer to the PDB file that contains the debug information.

Parameters

FaultAddress	Address to find PE/COFF image for.
ImageBase	Return load address of found image
PeCoffSizeOfHeaders	Return the size of the PE/COFF header for the image that was found

Return values

NULL	FaultAddress not in a loaded PE/COFF image.
Path	and file name of PE/COFF image.

Definition at line 30 of file DefaultExceptionHandlerUefi.c.

Variable Documentation

◆ gExceptionTypeString

STATIC CHAR8* gExceptionTypeString[]

Initial value:

= {
  "Synchronous",
  "IRQ",
  "FIQ",
  "SError"
}

Definition at line 31 of file DefaultExceptionHandler.c.

◆ mRecursiveException

STATIC BOOLEAN mRecursiveException

Definition at line 38 of file DefaultExceptionHandler.c.

Macros

Functions

Variables