--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianImageLib/ROM/Structures/SRomPageInfo.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,141 @@
+/*
+* 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
+    }
+}