diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStackLib/Plugins/Accurate/Instructions/Types/AccInstBranch.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStackLib/Plugins/Accurate/Instructions/Types/AccInstBranch.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,103 @@
+/*
+* 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.Collections.Generic;
+using System.Text;
+using System.IO;
+using SymbianUtils.BasicTypes;
+using SymbianStructuresLib.Arm;
+using SymbianStructuresLib.Arm.Instructions;
+using SymbianStructuresLib.Arm.Registers;
+using SymbianInstructionLib.Arm.Instructions.Common;
+using SymbianInstructionLib.Arm.Instructions.Arm;
+using SymbianInstructionLib.Arm.Instructions.Arm.DataProcessing;
+using SymbianInstructionLib.Arm.Instructions.Thumb;
+using SymbianInstructionLib.Arm.Instructions.Thumb.DataProcessing;
+using SymbianStackAlgorithmAccurate.CPU;
+using SymbianStackAlgorithmAccurate.Prologue;
+
+namespace SymbianStackAlgorithmAccurate.Instructions.Types
+{
+    internal class AccInstBranch : AccInstruction
+    {
+        #region Constructors
+        public AccInstBranch( IArmInstruction aInstruction )
+            : base( aInstruction )
+        {
+            System.Diagnostics.Debug.Assert( base.Instruction.AIGroup == TArmInstructionGroup.EGroupBranch );
+        }
+        #endregion
+
+        #region API
+        internal override void Process( ArmPrologueHelper aProlog )
+        {
+        }
+
+        internal override void Prefilter( AccInstructionList aInstructions, int aMyIndex, int aInstructionCountOffsetToPC )
+        {
+            if ( this.Ignored == false )
+            {
+                int count = aInstructions.Count;
+                //
+                if ( base.Instruction.AIConditionCode == TArmInstructionCondition.AL )
+                {
+                    // As soon as we see any unconditional branch statement we can be sure that we are past the Prologue.
+                    for ( int i = aMyIndex + 1; i < count; i++ )
+                    {
+                        aInstructions[ i ].Ignored = true;
+                    }
+                }
+                else
+                {
+                    // Count the number of interesting instructions before the conditional branch
+                    int interestingInstructionCount = 0;
+                    for ( int i = 0; i < aMyIndex; i++ )
+                    {
+                        AccInstruction accInstruction = aInstructions[ i ];
+                        IArmInstruction inst = accInstruction.Instruction;
+                        //
+                        bool involvesSP = inst.QueryInvolvement( TArmRegisterType.EArmReg_SP );
+                        if ( involvesSP )
+                        {
+                            ++interestingInstructionCount;
+                        }
+                    }
+
+                    // If we have seen at least one interesting instruction then assume prologue is complete.
+                    if ( interestingInstructionCount >= 1 )
+                    {
+                        for ( int i = aMyIndex; i < count; i++ )
+                        {
+                            aInstructions[ i ].Ignored = true;
+                        }
+                    }
+                }
+            }
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Internal methods
+        #endregion
+
+        #region Data members
+        #endregion
+    }
+}
+