diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/Libraries/Engine/CrashItemLib/Engine/ProblemDetectors/Registers/CIPDRegAvailability.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/Libraries/Engine/CrashItemLib/Engine/ProblemDetectors/Registers/CIPDRegAvailability.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,134 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:
+*
+*/
+using System;
+using System.Text;
+using System.Collections.Generic;
+using CrashItemLib.Crash.Container;
+using CrashItemLib.Crash.Stacks;
+using CrashItemLib.Crash.Registers;
+using CrashItemLib.Crash.Base;
+using CrashItemLib.Crash.Messages;
+using CrashItemLib.Crash.Summarisable;
+using SymbianStructuresLib.Arm.Registers;
+using SymbianUtils.Range;
+
+namespace CrashItemLib.Engine.ProblemDetectors.Registers
+{
+    internal class CIPDRegAvailability : CIProblemDetector
+    {
+        #region Constructors
+        public CIPDRegAvailability()
+		{
+        }
+		#endregion
+
+        #region From CIProblemDetector
+        public override void Check( CIContainer aContainer )
+        {
+            CISummarisableEntityList list = aContainer.Summaries;
+            foreach ( CISummarisableEntity entry in list )
+            {
+                // Check that each stack contains some registers and at least the SP.
+                bool stackAvailable = entry.IsAvailable( CISummarisableEntity.TElement.EElementStack );
+                bool regsAvailable = entry.IsAvailable( CISummarisableEntity.TElement.EElementRegisters );
+                //
+                if ( stackAvailable )
+                {
+                    CIStack stack = entry.Stack;
+                    //
+                    if ( regsAvailable )
+                    {
+                        CIRegisterList regs = stack.Registers;
+
+                        // Check that SP, LR and PC are available
+                        bool pointerAvailable = regs.Contains( TArmRegisterType.EArmReg_SP );
+                        if ( !pointerAvailable )
+                        {
+                            base.CreateWarning( aContainer, stack,
+                               LibResources.CIPDRegAvailability_MissingSP_Title,
+                               string.Format( LibResources.CIPDRegAvailability_MissingSP_Description, base.CreateIdentifierText( entry ) )
+                               );
+                        }
+                        //
+                        bool lrAvailable = regs.Contains( TArmRegisterType.EArmReg_LR );
+                        if ( !lrAvailable )
+                        {
+                            base.CreateWarning( aContainer, stack,
+                               LibResources.CIPDRegAvailability_MissingLR_Title,
+                               string.Format( LibResources.CIPDRegAvailability_MissingLR_Description, base.CreateIdentifierText( entry ) )
+                               );
+                        }
+                        //
+                        bool pcAvailable = regs.Contains( TArmRegisterType.EArmReg_PC );
+                        if ( !pcAvailable )
+                        {
+                            base.CreateWarning( aContainer, stack,
+                               LibResources.CIPDRegAvailability_MissingPC_Title,
+                               string.Format( LibResources.CIPDRegAvailability_MissingPC_Description, base.CreateIdentifierText( entry ) )
+                               );
+                        }
+                     
+                        // If R0 is available, check if it is 0 and check whether an exception occurred - if so, it was possibly
+                        // caused by de-referencing a NULL this pointer.
+                        bool threadAvailable = entry.IsAvailable( CISummarisableEntity.TElement.EElementThread );
+                        if ( threadAvailable )
+                        {
+                            if ( regs.Contains( TArmRegisterType.EArmReg_00 ) )
+                            {
+                                CIRegister r0 = regs[ TArmRegisterType.EArmReg_00 ];
+                                //
+                                bool r0WasNull = ( r0.Value == 0 );
+                                bool wasException = entry.IsAbnormalTermination && ( entry.Thread.ExitInfo.Type == CrashItemLib.Crash.ExitInfo.CIExitInfo.TExitType.EExitTypeException );
+                                bool wasKernExec3 = entry.IsAbnormalTermination && ( entry.Thread.ExitInfo.Type == CrashItemLib.Crash.ExitInfo.CIExitInfo.TExitType.EExitTypePanic && 
+                                                                                     entry.Thread.ExitInfo.Category.ToUpper() == "KERN-EXEC" && 
+                                                                                     entry.Thread.ExitInfo.Reason == 3 );
+                                //
+                                if ( r0WasNull && ( wasException || wasKernExec3 ) )
+                                {
+                                    base.CreateWarning( aContainer, r0,
+                                       LibResources.CIPDRegAvailability_NullThisPointer_Title,
+                                       string.Format( LibResources.CIPDRegAvailability_NullThisPointer_Description, base.CreateIdentifierText( entry ) )
+                                       );
+                                }
+                            }
+                        }
+                    }
+                    else
+                    {
+                        base.CreateWarning( aContainer, stack, 
+                               LibResources.CIPDRegAvailability_NoRegsForStack_Title,
+                               string.Format( LibResources.CIPDRegAvailability_NoRegsForStack_Description, base.CreateIdentifierText( entry ) )
+                               );
+                    }
+                }
+            }
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Internal methods
+        #endregion
+
+        #region From System.Object
+        #endregion
+
+        #region Data members
+		#endregion
+    }
+}