crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianImageLib/ROM/Structures/SRomPageInfo.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 SymbianStructuresLib.Version;
namespace SymbianImageLib.ROM.Structures
{
internal class SRomPageInfo
{
#region Enumerations
public enum TSymbianCompressionType
{
ENoCompression = 0,
EBytePair,
}
#endregion
#region Static constructors
public static SRomPageInfo New( Stream aStream, uint aOffsetToStartOfRomData )
{
byte[] data = new byte[ Size ];
aStream.Read( data, 0, data.Length );
return new SRomPageInfo( data, aOffsetToStartOfRomData );
}
#endregion
#region Constructors
private SRomPageInfo( byte[] aArray, uint aOffsetToStartOfRomData )
{
uint delta = 0;
//
iDataStart = aOffsetToStartOfRomData + ReadUint( aArray, ref delta );
iDataSize = ReadUshort( aArray, ref delta );
iCompressionType = (TSymbianCompressionType) aArray[ delta++ ];
iPagingAttributes = (TAttributes) aArray[ delta++ ];
}
#endregion
#region Constants
public const int KPageSize = 0x1000;
#endregion
#region Properties
public static uint Size
{
get { return 8; }
}
public bool IsPageable
{
get { return ( iPagingAttributes & TAttributes.EPageable ) == TAttributes.EPageable; }
}
public TSymbianCompressionType CompressionType
{
get
{
// Rather frustratingly, even unpageable areas of the ROM still report their
// compression type as "byte pair". We must zero this out, since they are
// definitely not compressed.
if ( !IsPageable )
{
return TSymbianCompressionType.ENoCompression;
}
//
return iCompressionType;
}
}
public uint DataStart
{
get { return iDataStart; }
}
public uint DataSize
{
get { return iDataSize; }
}
#endregion
#region Internal enumerations
[Flags]
private enum TAttributes
{
EPageable = 1 << 0
}
#endregion
#region Internal methods
private static uint ReadUint( byte[] aArray, ref uint aOffset )
{
uint ret = 0;
//
ret += (uint) ( aArray[ aOffset + 0 ] << 00 );
ret += (uint) ( aArray[ aOffset + 1 ] << 08 );
ret += (uint) ( aArray[ aOffset + 2 ] << 16 );
ret += (uint) ( aArray[ aOffset + 3 ] << 24 );
//
aOffset += 4;
//
return ret;
}
private static ushort ReadUshort( byte[] aArray, ref uint aOffset )
{
ushort ret = 0;
//
ret += (ushort) ( aArray[ aOffset + 0 ] << 00 );
ret += (ushort) ( aArray[ aOffset + 1 ] << 08 );
//
aOffset += 2;
//
return ret;
}
#endregion
#region Data members
private uint iDataStart;
private ushort iDataSize;
private TSymbianCompressionType iCompressionType;
private TAttributes iPagingAttributes;
#endregion
}
}