// 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 ");

 	}