private void WritePDBDataHelper(string dllPath, IEnumerable <MethodInfo> methods)
{
// This will try to open the managed PDB if lines info was requested. This is a
// likely failure point, so intentionally do this before creating the NGEN PDB file
// on disk.
bool isILPDBProvided = false;
if (_pdbExtraData.HasFlag(PDBExtraData.kPDBLines))
{
// line mapping not ported from crossgen yet.
throw new NotImplementedException();
}
string originalDllPath = dllPath;
// Currently DiaSymReader does not work properly generating NGEN PDBS unless
// the DLL whose PDB is being generated ends in .ni.*. Unfortunately, readyToRun
// images do not follow this convention and end up producing bad PDBS. To fix
// this (without changing diasymreader.dll which ships indepdendently of .NET Core)
// we copy the file to somethign with this convention before generating the PDB
// and delete it when we are done.
if (!dllPath.EndsWith(".ni.dll", StringComparison.OrdinalIgnoreCase) && !dllPath.EndsWith(".ni.exe", StringComparison.OrdinalIgnoreCase))
{
_tempSourceDllName = Path.Combine(Path.GetDirectoryName(dllPath), Path.GetFileNameWithoutExtension(dllPath) + ".ni" + Path.GetExtension(dllPath));
File.Copy(dllPath, _tempSourceDllName);
dllPath = _tempSourceDllName;
}
_ngenWriter = CreateNGenWriter(dllPath, _pdbPath + "\\");
{
// PDB file is now created. Get its path and initialize _pdbFilePath so the PDB file
// can be deleted if we don't make it successfully to the end
StringBuilder pdbFilePathBuilder = new StringBuilder();
pdbFilePathBuilder.Capacity = 1024;
_ngenWriter.QueryPDBNameExW(pdbFilePathBuilder, new IntPtr(pdbFilePathBuilder.Capacity));
_pdbFilePath = pdbFilePathBuilder.ToString();
}
_ngenWriter.OpenModW(originalDllPath, Path.GetFileName(originalDllPath), out _pdbMod);
WriteStringTable();
WriteFileChecksums();
ushort?iCodeSection = null;
uint rvaOfTextSection = 0;
using (var peReader = new PEReader(new FileStream(dllPath, FileMode.Open), PEStreamOptions.Default))
{
var sections = peReader.PEHeaders.SectionHeaders;
for (int i = 0; i < sections.Length; i++)
{
ushort pdbSectionNumber = checked ((ushort)(i + 1));
_ngenWriter.AddSection(pdbSectionNumber, OMF.StandardText, 0, sections[i].SizeOfRawData);
if (sections[i].Name == ".text")
{
iCodeSection = pdbSectionNumber;
rvaOfTextSection = (uint)sections[i].VirtualAddress;
}
_ngenWriter.ModAddSecContribEx(_pdbMod, pdbSectionNumber, 0, sections[i].SizeOfRawData, (uint)sections[i].SectionCharacteristics, 0, 0);
}
}
// To support lines info, we need a "dummy" section, indexed as 0, for use as a
// sentinel when MSPDB sets up its section contribution table
_ngenWriter.AddSection(0, // Dummy section 0
OMF.SentinelType,
0,
unchecked ((int)0xFFFFFFFF));
foreach (var method in methods)
{
WriteMethodPDBData(iCodeSection.Value, method, Path.GetFileNameWithoutExtension(originalDllPath), rvaOfTextSection, isILPDBProvided);
}
}
private extern static void CreateNGenPdbWriter(
[MarshalAs(UnmanagedType.LPWStr)] string ngenImagePath,
[MarshalAs(UnmanagedType.LPWStr)] string pdbPath,
[MarshalAs(UnmanagedType.Interface)] out ISymNGenWriter2 ngenPdbWriter);
