crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianStackLib/Plugins/Accurate/Instructions/Types/AccInstBranch.cs
Version 1.0.13. The most important changes are:
-detailed defect hash added
-panic descriptions updated
-release build is working
-simple command line usage added
/*
* 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
}
}