static ISymUnmanagedWriter2 CreateSymUnmanagedWriter2(PdbWriterOptions options)
{
bool useDiaSymReader = (options & PdbWriterOptions.NoDiaSymReader) == 0;
bool useOldDiaSymReader = (options & PdbWriterOptions.NoOldDiaSymReader) == 0;
if (useDiaSymReader && canTry_Microsoft_DiaSymReader_Native)
{
try {
var guid = CLSID_CorSymWriter_SxS;
object symWriterObj;
var machine = ProcessorArchUtils.GetProcessCpuArchitecture();
switch (machine)
{
case Machine.AMD64:
CreateSymWriter_x64(ref guid, out symWriterObj);
break;
case Machine.I386:
CreateSymWriter_x86(ref guid, out symWriterObj);
break;
case Machine.ARMNT:
CreateSymWriter_arm(ref guid, out symWriterObj);
break;
case Machine.ARM64:
CreateSymWriter_arm64(ref guid, out symWriterObj);
break;
default:
Debug.Fail($"Microsoft.DiaSymReader.Native doesn't support this CPU arch: {machine}");
symWriterObj = null;
break;
}
if (symWriterObj is ISymUnmanagedWriter2 symWriter)
{
return(symWriter);
}
}
catch (DllNotFoundException) {
Debug.WriteLine("Microsoft.DiaSymReader.Native not found, using diasymreader.dll instead");
}
catch {
}
canTry_Microsoft_DiaSymReader_Native = false;
}
if (useOldDiaSymReader)
{
return((ISymUnmanagedWriter2)Activator.CreateInstance(CorSymWriterType ??= Type.GetTypeFromCLSID(CLSID_CorSymWriter_SxS)));
}
return(null);
}
static bool CalculateSupportsUnalignedAccesses()
{
var machine = ProcessorArchUtils.GetProcessCpuArchitecture();
switch (machine)
{
case Machine.I386:
case Machine.AMD64:
return(true);
case Machine.ARMNT:
case Machine.ARM64:
return(false);
default:
Debug.Fail($"Unknown CPU arch: {machine}");
return(true);
}
}