sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\nkernsmp\arm\ncmonitor.cia
sl@0: // Kernel crash debugger - NKERNSMP ARM specific portion
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32cia.h>
sl@0: #include <kernel/monitor.h>
sl@0: #include "nk_priv.h"
sl@0: #include <arm.h>
sl@0: 
sl@0: EXPORT_C __NAKED__ void Monitor::HandleException()
sl@0: //
sl@0: // Handle an exception while the monitor is running
sl@0: //
sl@0: 	{
sl@0: 	asm("mov	r3, r1 ");					// exception type
sl@0: 	asm("ldr	r0, [sp, #24] ");			// code address
sl@0: 	asm("cmp	r1, #%a0 " : : "i" ((TInt)EArmExceptionPrefetchAbort));
sl@0: 	asm("mrceq	p15, 0, r2, c5, c0, 1 ");	// r2=instruction fault status
sl@0: 	asm("mrcne	p15, 0, r2, c5, c0, 0 ");	// r2=data fault status
sl@0: #ifdef __CPU_ARM_HAS_CP15_IFAR
sl@0: 	asm("mrceq	p15, 0, r1, c6, c0, 2 ");	// r1= IFAR fault address
sl@0: #else
sl@0: 	asm("moveq	r1, r0 ");					// if no IFAR, must be equal to code address
sl@0: #endif
sl@0: 	asm("mrcne	p15, 0, r1, c6, c0, 0 ");	// r1= DFAR fault address
sl@0: 	asm("add	sp, sp, #28 ");				// restore mode_abt/mode_und stack balance
sl@0: 	__ASM_CLI_MODE(MODE_FIQ);				// back into mode_fiq
sl@0: 	asm("ldr	r12, __TheMonitorPtr ");
sl@0: 	asm("ldr	r12, [r12] ");
sl@0: 	asm("add	r12, r12, #%a0" : : "i" _FOFF(Monitor,iExceptionInfo));
sl@0: 	asm("stmia	r12, {r0-r3} ");			// store exc info
sl@0: 	asm("mov	r0, #%a0" : : "i" ((TInt)KErrAbort));
sl@0: 	asm("b "	CSM_ZN7Monitor5LeaveEi );
sl@0: 
sl@0: 	asm("__TheMonitorPtr: ");
sl@0: 	asm(".word	TheMonitorPtr ");
sl@0: 	}
sl@0: