private void Load()
{
_image.Load(_reader);
uint mdbOffset = (uint)_reader.Position;
_reader.Position = mdbOffset;
// Metadata Header
// Signature
if (_reader.ReadUInt32() != 0x424A5342)
{
throw new BadMetadataException("Invalid metadata header.");
}
// MajorVersion 2
// MinorVersion 2
// Reserved 4
_reader.Advance(8);
var runtimeVersion = _reader.ReadZeroTerminatedString(_reader.ReadInt32());
// align for dword boundary
_reader.Align4();
// Flags 2
_reader.Advance(2);
LoadHeaps(mdbOffset);
}
private static List <SEHBlock> ReadSehBlocks(BufferedBinaryReader reader)
{
const int FatSize = 24;
const int TinySize = 12;
var blocks = new List <SEHBlock>();
bool next = true;
while (next)
{
// Goto 4 byte boundary (each section has to start at 4 byte boundary)
reader.Align4();
uint header = reader.ReadUInt32();
var sf = (SectionFlags)(header & 0xFF);
int size = (int)(header >> 8); //in bytes
if ((sf & SectionFlags.OptILTable) != 0)
{
}
else if ((sf & SectionFlags.FatFormat) == 0)
{
// tiny header
size &= 0xFF; // 1 byte size (filter out the padding)
int n = size / TinySize;
for (int i = 0; i < n; ++i)
{
var block = new SEHBlock(reader, false);
blocks.Add(block);
}
}
else
{
//make sure this is an exception block , otherwise skip
if ((sf & SectionFlags.EHTable) != 0)
{
int n = size / FatSize;
for (int i = 0; i < n; ++i)
{
var block = new SEHBlock(reader, true);
blocks.Add(block);
}
}
else
{
reader.Position += size;
}
}
next = (sf & SectionFlags.MoreSects) != 0;
}
return(blocks);
}