1 // Copyright (c) 1994-2009 Nokia Corporation and/or its subsidiary(-ies).
2 // All rights reserved.
3 // This component and the accompanying materials are made available
4 // under the terms of the License "Eclipse Public License v1.0"
5 // which accompanies this distribution, and is available
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
8 // Initial Contributors:
9 // Nokia Corporation - initial contribution.
14 // e32\nkern\arm\ncmonitor.cia
15 // Kernel crash debugger - NKERN ARM specific portion
20 #include <kernel/monitor.h>
25 #define __USE_CP15_FAULT_INFO__
28 EXPORT_C __NAKED__ void Monitor::HandleException()
30 // Handle an exception while the monitor is running
33 asm("mov r3, r1 "); // exception type
34 asm("ldr r0, [sp, #24] "); // code address
35 #ifdef __USE_CP15_FAULT_INFO__
36 #ifdef __CPU_ARM_HAS_SPLIT_FSR
37 asm("cmp r1, #%a0 " : : "i" ((TInt)EArmExceptionPrefetchAbort));
38 asm("mrceq p15, 0, r2, c5, c0, 1"); // r2=instruction fault status
39 asm("mrcne p15, 0, r2, c5, c0, 0"); // r2=data fault status
40 #ifdef __CPU_ARM_HAS_CP15_IFAR
41 asm("mrceq p15, 0, r1, c6, c0, 2"); // r1= IFAR fault address
42 asm("mrcne p15, 0, r1, c6, c0, 0"); // r1= DFAR fault address
44 asm("mrc p15, 0, r1, c6, c0"); // r1= FAR fault address
45 #endif // __CPU_ARM_HAS_CP15_IFAR
47 asm("mrc p15, 0, r1, c6, c0"); // r1=fault address
48 asm("mrc p15, 0, r2, c5, c0"); // r2=fault status
49 #endif // __CPU_ARM_HAS_SPLIT_FSR
50 #endif // __USE_CP15_FAULT_INFO__
51 asm("add sp, sp, #28 "); // restore mode_abt/mode_und stack balance
52 asm("mov r12, #0xd1 "); // back into mode_fiq
53 asm("msr cpsr, r12 ");
54 asm("ldr r12, __TheMonitorPtr ");
55 asm("ldr r12, [r12] ");
56 asm("add r12, r12, #%a0" : : "i" _FOFF(Monitor,iExceptionInfo));
57 asm("stmia r12, {r0-r3} "); // store exc info
58 asm("mov r0, #%a0" : : "i" ((TInt)KErrAbort));
59 asm("b " CSM_ZN7Monitor5LeaveEi );
61 asm("__TheMonitorPtr: ");
62 asm(".word TheMonitorPtr ");