// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// e32\nkernsmp\arm\ncmonitor.cia

// Kernel crash debugger - NKERNSMP ARM specific portion

// 

//

#include <e32cia.h>

#include <kernel/monitor.h>

#include "nk_priv.h"

#include <arm.h>

EXPORT_C __NAKED__ void Monitor::HandleException()

//

// Handle an exception while the monitor is running

//

	{

	asm("mov	r3, r1 ");					// exception type

	asm("ldr	r0, [sp, #24] ");			// code address

	asm("cmp	r1, #%a0 " : : "i" ((TInt)EArmExceptionPrefetchAbort));

	asm("mrceq	p15, 0, r2, c5, c0, 1 ");	// r2=instruction fault status

	asm("mrcne	p15, 0, r2, c5, c0, 0 ");	// r2=data fault status

#ifdef __CPU_ARM_HAS_CP15_IFAR

	asm("mrceq	p15, 0, r1, c6, c0, 2 ");	// r1= IFAR fault address

#else

	asm("moveq	r1, r0 ");					// if no IFAR, must be equal to code address

#endif

	asm("mrcne	p15, 0, r1, c6, c0, 0 ");	// r1= DFAR fault address

	asm("add	sp, sp, #28 ");				// restore mode_abt/mode_und stack balance

	__ASM_CLI_MODE(MODE_FIQ);				// back into mode_fiq

	asm("ldr	r12, __TheMonitorPtr ");

	asm("ldr	r12, [r12] ");

	asm("add	r12, r12, #%a0" : : "i" _FOFF(Monitor,iExceptionInfo));

	asm("stmia	r12, {r0-r3} ");			// store exc info

	asm("mov	r0, #%a0" : : "i" ((TInt)KErrAbort));

	asm("b "	CSM_ZN7Monitor5LeaveEi );

	asm("__TheMonitorPtr: ");

	asm(".word	TheMonitorPtr ");

	}