ArchExceptionHandler.c File Reference

#include "CpuExceptionCommon.h"

Go to the source code of this file.

Functions
VOID	ArchUpdateIdtEntry (OUT IA32_IDT_GATE_DESCRIPTOR *IdtEntry, IN UINTN InterruptHandler)
UINTN	ArchGetIdtHandler (IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry)
VOID	ArchSaveExceptionContext (IN UINTN ExceptionType, IN EFI_SYSTEM_CONTEXT SystemContext, IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData)
VOID	ArchRestoreExceptionContext (IN UINTN ExceptionType, IN EFI_SYSTEM_CONTEXT SystemContext, IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData)
EFI_STATUS	ArchSetupExceptionStack (IN VOID *Buffer, IN OUT UINTN *BufferSize)
VOID EFIAPI	DumpCpuContext (IN EFI_EXCEPTION_TYPE ExceptionType, IN EFI_SYSTEM_CONTEXT SystemContext)
VOID	DumpImageAndCpuContent (IN EFI_EXCEPTION_TYPE ExceptionType, IN EFI_SYSTEM_CONTEXT SystemContext)

Detailed Description

x64 CPU Exception Handler.

Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file ArchExceptionHandler.c.

Function Documentation

ArchGetIdtHandler()

UINTN ArchGetIdtHandler

(

IN IA32_IDT_GATE_DESCRIPTOR *

IdtEntry

)

Read IDT handler value from IDT entry.

Parameters

IdtEntry

Pointer to IDT entry to be read.

Definition at line 37 of file ArchExceptionHandler.c.

ArchRestoreExceptionContext()

VOID ArchRestoreExceptionContext	(	IN UINTN	ExceptionType,
		IN EFI_SYSTEM_CONTEXT	SystemContext,
		IN EXCEPTION_HANDLER_DATA *	ExceptionHandlerData
	)

Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.

Parameters

[in]	ExceptionType	Exception type.
[in]	SystemContext	Pointer to EFI_SYSTEM_CONTEXT.
[in]	ExceptionHandlerData	Pointer to exception handler data.

Definition at line 94 of file ArchExceptionHandler.c.

ArchSaveExceptionContext()

VOID ArchSaveExceptionContext	(	IN UINTN	ExceptionType,
		IN EFI_SYSTEM_CONTEXT	SystemContext,
		IN EXCEPTION_HANDLER_DATA *	ExceptionHandlerData
	)

Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.

Parameters

[in]	ExceptionType	Exception type.
[in]	SystemContext	Pointer to EFI_SYSTEM_CONTEXT.
[in]	ExceptionHandlerData	Pointer to exception handler data.

Definition at line 53 of file ArchExceptionHandler.c.

ArchSetupExceptionStack()

EFI_STATUS ArchSetupExceptionStack	(	IN VOID *	Buffer,
		IN OUT UINTN *	BufferSize
	)

Setup separate stacks for certain exception handlers.

Parameters

[in]	Buffer	Point to buffer used to separate exception stack.
[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.

Return values

EFI_SUCCESS	The stacks are assigned successfully.
EFI_BUFFER_TOO_SMALL	This BufferSize is too small.
EFI_UNSUPPORTED	This function is not supported.

Definition at line 125 of file ArchExceptionHandler.c.

ArchUpdateIdtEntry()

VOID ArchUpdateIdtEntry	(	OUT IA32_IDT_GATE_DESCRIPTOR *	IdtEntry,
		IN UINTN	InterruptHandler
	)

Return address map of exception handler template so that C code can generate exception tables.

Parameters

IdtEntry	Pointer to IDT entry to be updated.
InterruptHandler	IDT handler value.

Definition at line 19 of file ArchExceptionHandler.c.

DumpCpuContext()

VOID EFIAPI DumpCpuContext	(	IN EFI_EXCEPTION_TYPE	ExceptionType,
		IN EFI_SYSTEM_CONTEXT	SystemContext
	)

Display CPU information.

Parameters

ExceptionType	Exception type.
SystemContext	Pointer to EFI_SYSTEM_CONTEXT.

Definition at line 273 of file ArchExceptionHandler.c.

DumpImageAndCpuContent()

VOID DumpImageAndCpuContent	(	IN EFI_EXCEPTION_TYPE	ExceptionType,
		IN EFI_SYSTEM_CONTEXT	SystemContext
	)

Display CPU information.

Parameters

ExceptionType	Exception type.
SystemContext	Pointer to EFI_SYSTEM_CONTEXT.

Definition at line 405 of file ArchExceptionHandler.c.