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