--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianImageLib/ROM/Header/SIHeaderROM.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,192 @@
+/*
+* 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.Text.RegularExpressions;
+using System.IO;
+using SymbianUtils.Strings;
+using SymbianUtils.Streams;
+using SymbianImageLib.Common.Header;
+using SymbianImageLib.Common.Image;
+using SymbianStructuresLib.Compression.Common;
+using SymbianImageLib.ROM.Structures;
+
+namespace SymbianImageLib.ROM.Header
+{
+    internal class SIHeaderROM : SIHeader
+    {
+        #region Constructors
+        public SIHeaderROM( SIImage aImage, Stream aStream )
+            : base( aImage )
+        {
+            aStream.Seek( 0, SeekOrigin.Begin );
+            //
+            iHeaderData = new byte[ KMaximumRomHeaderSize ];
+            int amountRead = aStream.Read( iHeaderData, 0, KMaximumRomHeaderSize );
+            //
+            string headerText = StringParsingUtils.BytesToString( iHeaderData, KEpocHeaderLength );
+            base.Trace( "[SymbianImageHeaderROM] Ctor() - headerText: {0}, amountRead: {1}", headerText, amountRead );
+            //
+            if ( IsEpocHeader( headerText ) == false )
+            {
+                throw new NotSupportedException( string.Format( "ROM Image header is unsupported: {0}", headerText ) );
+            }
+            //
+            ReadHeaderData( iHeaderData );
+        }
+        #endregion
+
+        #region Constants
+        public const int KMaximumRomHeaderSize = 0x400;
+        public const int KPageSize = 0x1000;
+        #endregion
+
+        #region From SymbianImageHeader
+        public override TSymbianCompressionType CompressionType
+        {
+            get
+            {
+                TSymbianCompressionType ret = TSymbianCompressionType.ENone;
+                //
+                if ( iRomHdr.CompressionType == (uint) TSymbianCompressionType.EBytePair )
+                {
+                    ret = TSymbianCompressionType.EBytePair;
+                }
+                else if ( iRomHdr.CompressionType == (uint) TSymbianCompressionType.EDeflate )
+                {
+                    ret = TSymbianCompressionType.EDeflate;
+                }
+                else
+                {
+                    // Check for byte pair...
+                    if ( iRomHdr.RomPageIndex != 0 )
+                    {
+                        ret = TSymbianCompressionType.EBytePair;
+                    }
+                }
+                //
+                return ret;
+            }
+        }
+
+        public override uint HeaderSize
+        {
+            get
+            {
+                uint ret = 0;
+                //
+                ret += HeaderSizeLoader;
+                ret += iRomHdr.Size;
+                //
+                return ret;
+            }
+        }
+        #endregion
+
+        #region API
+        public static bool IsROM( Stream aStream )
+        {
+            using ( SymbianStreamReaderLE reader = SymbianStreamReaderLE.New( aStream, SymbianStreamReaderLE.TCloseOperation.EResetPosition ) )
+            {
+                string signature = reader.ReadString( KEpocHeaderLength );
+                bool ret = IsEpocHeader( signature );
+                return ret;
+            }
+        }
+        #endregion
+
+        #region Properties
+        public uint UncompressedRomSize
+        {
+            get { return iRomHdr.UncompressedSize; }
+        }
+
+        public uint HeaderSizeLoader
+        {
+            get { return iLoaderHdr.Size; }
+        }
+
+        public uint RomBaseAddress
+        {
+            get { return iRomHdr.RomBaseAddress; }
+        }
+
+        public int NumberOfPages
+        {
+            get
+            {
+                int pageAreaStart = iRomHdr.PageableRomStart;
+                int pageRomSize = iRomHdr.PageableRomSize;
+                int numPages = ( pageAreaStart + pageRomSize + KPageSize - 1 ) / KPageSize;
+                //
+                return numPages;
+            }
+        }
+
+        public uint RomPageIndexOffset
+        {
+            get
+            {
+                uint ret = iLoaderHdr.Size;
+                ret += iRomHdr.RomPageIndex;
+                return ret;
+            }
+        }
+        #endregion
+
+        #region Internal constants
+        // The signature for Core ROM images used to be EPOCARM4ROM, but now EPOCARM5ROM has
+        // also been observed.
+        private const int KEpocHeaderLength = 11;
+        private static readonly Regex KEpocHeaderTextRegEx = new Regex(
+              "EPOCARM\\dROM",
+            RegexOptions.Singleline
+            | RegexOptions.CultureInvariant
+            | RegexOptions.IgnorePatternWhitespace
+            | RegexOptions.Compiled
+            );
+        #endregion
+
+        #region Internal methods
+        private static bool IsEpocHeader( string aText )
+        {
+            Match m = KEpocHeaderTextRegEx.Match( aText );
+            bool ret = m.Success;
+            return ret;
+        }
+
+        private void ReadHeaderData( byte[] aBuffer )
+        {
+            using ( MemoryStream stream = new MemoryStream( aBuffer ) )
+            {
+                using ( BinaryReader reader = new BinaryReader( stream ) )
+                {
+                    iLoaderHdr.Read( reader );
+                    iRomHdr.Read( reader );
+                }
+            }
+        }
+        #endregion
+
+        #region Data members
+        private TRomLoaderHeader iLoaderHdr = new TRomLoaderHeader();
+        private TRomHeader iRomHdr = new TRomHeader();
+        private readonly byte[] iHeaderData;
+        #endregion
+    }
+}