internal MethodBodySection ReadFatSection(byte flag)
{
MethodBodySection section = new MethodBodySection(flag);
peImage.SetOffset(peImage.stream.Position - 1);
int count = (BitConverter.ToInt32(peImage.ReadBytes(4),0) >> 8) / 0x18;
for (int i = 0; i < count; i++)
{
ExceptionHandler handler = new ExceptionHandler((ExceptionHandlerType)(BitConverter.ToInt32(peImage.ReadBytes(4),0) & 7),
BitConverter.ToInt32(peImage.ReadBytes(4), 0),
BitConverter.ToInt32(peImage.ReadBytes(4), 0),
BitConverter.ToInt32(peImage.ReadBytes(4), 0),
BitConverter.ToInt32(peImage.ReadBytes(4), 0));
if (handler.Type == ExceptionHandlerType.Catch)
try
{
handler.CatchType = (TypeReference)methodbody.Method.netheader.TokenResolver.ResolveMember(BitConverter.ToInt32(peImage.ReadBytes(4), 0));
}
catch { handler.CatchType = methodbody.Method.netheader.TypeSystem.Object; }
else if (handler.Type == ExceptionHandlerType.Filter)
handler.FilterStart = BitConverter.ToInt32(peImage.ReadBytes(4), 0);
else
peImage.ReadBytes(4);
section.handlers.Add(handler);
}
return section;
}
private void AppendExceptionHandler(ExceptionHandler handler, BinaryWriter writer, bool fatFormat)
{
if (fatFormat)
{
writer.Write((uint)handler.Type);
writer.Write(handler.TryStart);
writer.Write(handler.TryEnd - handler.TryStart);
writer.Write(handler.HandlerStart);
writer.Write(handler.HandlerEnd - handler.HandlerStart);
if (handler.CatchType == null)
writer.Write(0);
else
writer.Write(handler.CatchType.MetaDataToken);
writer.Write(handler.FilterStart);
}
else
{
writer.Write((ushort)handler.Type);
writer.Write((ushort)handler.TryStart);
writer.Write((byte)(handler.TryEnd - handler.TryStart));
writer.Write((ushort)handler.HandlerStart);
writer.Write((byte)(handler.HandlerEnd - handler.HandlerStart));
if (handler.CatchType == null)
writer.Write(0);
else
writer.Write(handler.CatchType.MetaDataToken);
writer.Write(handler.FilterStart);
}
}
internal MethodBodySection ReadSmallSection(byte flag)
{
MethodBodySection section = new MethodBodySection(flag);
int count = peImage.ReadByte() / 12;
peImage.ReadBytes(2);
for (int i = 0; i < count; i++)
{
ExceptionHandler handler = new ExceptionHandler((ExceptionHandlerType)(BitConverter.ToInt16(peImage.ReadBytes(2), 0) & 7),
BitConverter.ToInt16(peImage.ReadBytes(2), 0),
peImage.ReadByte(),
BitConverter.ToInt16(peImage.ReadBytes(2), 0),
peImage.ReadByte());
if (handler.Type == ExceptionHandlerType.Catch)
handler.CatchType = (TypeReference)methodbody.Method.netheader.TokenResolver.ResolveMember(BitConverter.ToInt32(peImage.ReadBytes(4), 0));
else if (handler.Type == ExceptionHandlerType.Filter)
handler.FilterStart = BitConverter.ToInt32(peImage.ReadBytes(4), 0);
else
peImage.ReadBytes(4);
section.handlers.Add(handler);
}
return section;
}
