mirror of https://github.com/acidanthera/audk.git
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/** @file
|
|
CPU Exception Library provides DXE/SMM CPU exception handler.
|
|
|
|
Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials are licensed and made available under
|
|
the terms and conditions of the BSD License that accompanies this distribution.
|
|
The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php.
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include <PiDxe.h>
|
|
|
|
#include "CpuExceptionCommon.h"
|
|
#include <Library/SynchronizationLib.h>
|
|
|
|
//
|
|
// Spinlock for CPU information display
|
|
//
|
|
SPIN_LOCK mDisplayMessageSpinLock;
|
|
|
|
//
|
|
// Image align size for DXE/SMM
|
|
//
|
|
CONST UINTN mImageAlignSize = SIZE_4KB;
|
|
|
|
/**
|
|
Common exception handler.
|
|
|
|
@param ExceptionType Exception type.
|
|
@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
CommonExceptionHandler (
|
|
IN EFI_EXCEPTION_TYPE ExceptionType,
|
|
IN EFI_SYSTEM_CONTEXT SystemContext
|
|
)
|
|
{
|
|
//
|
|
// Get Spinlock to display CPU information
|
|
//
|
|
while (!AcquireSpinLockOrFail (&mDisplayMessageSpinLock)) {
|
|
CpuPause ();
|
|
}
|
|
|
|
//
|
|
// Display ExceptionType, CPU information and Image information
|
|
//
|
|
DumpCpuContent (ExceptionType, SystemContext);
|
|
|
|
//
|
|
// Release Spinlock
|
|
//
|
|
ReleaseSpinLock (&mDisplayMessageSpinLock);
|
|
|
|
//
|
|
// Enter a dead loop.
|
|
//
|
|
CpuDeadLoop ();
|
|
}
|
|
|
|
/**
|
|
Setup CPU exception handlers.
|
|
|
|
This API will setups the CPU exception handler to display CPU contents and run into
|
|
CpuDeadLoop().
|
|
Note: Before invoking this API, caller must allocate memory for IDT table and load
|
|
IDTR by AsmWriteIdtr().
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
SetupCpuExceptionHandlers (
|
|
IN VOID
|
|
)
|
|
{
|
|
InitializeSpinLock (&mDisplayMessageSpinLock);
|
|
InternalSetupCpuExceptionHandlers ();
|
|
}
|
|
|