diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kernel/eka/nkern/arm/ncmonitor.cia --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/kernelhwsrv/kernel/eka/nkern/arm/ncmonitor.cia Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,64 @@ +// Copyright (c) 1994-2009 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\nkern\arm\ncmonitor.cia +// Kernel crash debugger - NKERN ARM specific portion +// +// + +#include +#include +#include "nk_priv.h" +#include + +#ifdef __CPU_HAS_MMU +#define __USE_CP15_FAULT_INFO__ +#endif + +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 +#ifdef __USE_CP15_FAULT_INFO__ +#ifdef __CPU_ARM_HAS_SPLIT_FSR + 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 + asm("mrcne p15, 0, r1, c6, c0, 0"); // r1= DFAR fault address +#else + asm("mrc p15, 0, r1, c6, c0"); // r1= FAR fault address +#endif // __CPU_ARM_HAS_CP15_IFAR +#else + asm("mrc p15, 0, r1, c6, c0"); // r1=fault address + asm("mrc p15, 0, r2, c5, c0"); // r2=fault status +#endif // __CPU_ARM_HAS_SPLIT_FSR +#endif // __USE_CP15_FAULT_INFO__ + asm("add sp, sp, #28 "); // restore mode_abt/mode_und stack balance + asm("mov r12, #0xd1 "); // back into mode_fiq + asm("msr cpsr, r12 "); + 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 "); + } +