//! \brief close this stream
public override void Close()
{
m_bDisposed = true;
if (null != m_MemorySpace)
{
//! memory space
m_MemorySpace.BeginUpdateMemorySpaceEvent -= new VirtualMemorySpaceImage.BeginUpdateMemorySpace(m_MemorySpace_BeginUpdateMemorySpaceEvent);
m_MemorySpace.EndUpdateMemorySpaceEvent -= new VirtualMemorySpaceImage.EndUpdateMemorySpace(m_MemorySpace_EndUpdateMemorySpaceEvent);
m_MemorySpace.UpdateMemorySpaceEvent -= new VirtualMemorySpaceImage.UpdateMemorySpace(m_MemorySpace_UpdateMemorySpaceEvent);
m_MemorySpace.LoadMemoryBlockEvent -= new VirtualMemorySpaceImage.LoadMemoryBlock(LoadMemoryBlockFromHexFile);
m_MemorySpace = null;
}
//! file stream
if (null != m_FileStream)
{
m_FileStream.Dispose();
m_FileStream = null;
}
base.Close();
}
//! \brief load memory block from hex file
private Boolean LoadMemoryBlockFromHexFile(UInt32 tTargetAddress, ref Byte[] tData, Int32 tSize)
{
if (m_Access == FileAccess.Write)
{
return(false);
}
else if (null == m_FileStream)
{
return(false);
}
else if (!m_FileStream.CanRead)
{
return(false);
}
VirtualMemorySpace tMemorySpace = new VirtualMemorySpace();
tMemorySpace.SpaceLength = UInt32.MaxValue;
StreamReader tStreamReader = null;
try
{
FileStream tFileStream = null;
if (m_Access == FileAccess.Read)
{
tFileStream = new FileStream(m_FilePath, m_FileMode, m_Access, FileShare.Read);
}
else
{
tFileStream = new FileStream(m_FilePath, m_FileMode, m_Access, FileShare.ReadWrite);
}
tStreamReader = new StreamReader(tFileStream);
if (null == tStreamReader)
{
return(false);
}
}
catch (Exception Err)
{
Err.ToString();
tStreamReader.Close();
return(false);
}
String tRecordStr = null;
try
{
Boolean bSeeEOF = false;
UInt32 tAddress = 0;
do
{
tRecordStr = tStreamReader.ReadLine();
if (null != tRecordStr)
{
Record tRecord = Record.Parse(tRecordStr);
if (null == tRecord)
{
break;
}
switch (tRecord.RecordType)
{
case Record.Type.DATA_RECORD:
if (
((tRecord.LoadOffset + tAddress) < tTargetAddress) &&
((tRecord.LoadOffset + tAddress + tRecord.Data.Length) <= tTargetAddress)
)
{
continue;
}
else if (
((tRecord.LoadOffset + tAddress) > tTargetAddress) &&
((tTargetAddress + tSize) <= (tRecord.LoadOffset + tAddress))
)
{
break;
}
tMemorySpace.Write(tAddress + tRecord.LoadOffset, tRecord.Data);
break;
case Record.Type.END_OF_FILE_RECORD:
bSeeEOF = true;
break;
case Record.Type.EXTEND_SEGMENT_ADDRESS_RECORD:
tAddress = ((ExtendSegmentAddressRecord)tRecord).ExtendSegmentBaseAddress;
break;
case Record.Type.START_SEGMENT_ADDRESS_RECORD:
tAddress = ((StartSegmentAddressRecord)tRecord).StartSegmentAddress;
break;
case Record.Type.EXTEND_LINEAR_ADDRESS_RECORD:
tAddress = ((ExtendLinearAddressRecord)tRecord).UpperLinearBaseAddress;
break;
case Record.Type.START_LINEAR_ADDRESS_RECORD:
tAddress = ((StartLinearAddressRecord)tRecord).StartLinearAddress;
break;
default:
break;
}
}
}while (!bSeeEOF);
}
catch (Exception Err)
{
Err.ToString();
}
finally
{
tStreamReader.Dispose();
}
return(tMemorySpace.Read(tTargetAddress, ref tData, tSize));
}