internal static int GetTlsSlotForThread(RuntimeBase runtime, ulong teb)
{
const int maxTlsSlot = 64;
const int tlsSlotOffset = 0x1480; // Same on x86 and amd64
const int tlsExpansionSlotsOffset = 0x1780;
uint ptrSize = (uint)runtime.PointerSize;
ulong lowerTlsSlots = teb + tlsSlotOffset;
uint clrTlsSlot = runtime.GetTlsSlot();
if (clrTlsSlot == uint.MaxValue)
{
return(0);
}
ulong tlsSlot = 0;
if (clrTlsSlot < maxTlsSlot)
{
tlsSlot = lowerTlsSlots + ptrSize * clrTlsSlot;
}
else
{
if (!runtime.ReadPointer(teb + tlsExpansionSlotsOffset, out tlsSlot) || tlsSlot == 0)
{
return(0);
}
tlsSlot += ptrSize * (clrTlsSlot - maxTlsSlot);
}
ulong clrTls = 0;
if (!runtime.ReadPointer(tlsSlot, out clrTls))
{
return(0);
}
// Get thread data;
uint tlsThreadTypeIndex = runtime.GetThreadTypeIndex();
if (tlsThreadTypeIndex == uint.MaxValue)
{
return(0);
}
ulong threadType = 0;
if (!runtime.ReadPointer(clrTls + ptrSize * tlsThreadTypeIndex, out threadType))
{
return(0);
}
return((int)threadType);
}
/// <summary>
/// Gets a string field from the object. Note that the type must match exactly, as this method
/// will not do type coercion. This method will throw an ArgumentException if no field matches
/// the given name. It will throw an InvalidOperationException if the field is not
/// of the correct type. Lastly, it will throw a MemoryReadException if there was an error reading
/// the value of this field out of the data target.
/// </summary>
/// <param name="fieldName">The name of the field to get the value for.</param>
/// <returns>The value of the given field or null if this object points to a null value.</returns>
public string GetStringOrNull(string fieldName)
{
if (IsNull)
{
return(null);
}
ulong address = GetFieldAddress(fieldName, ClrElementType.String, "string");
ulong str;
RuntimeBase runtime = (RuntimeBase)_type.Heap.Runtime;
if (!runtime.ReadPointer(address, out str))
{
throw new MemoryReadException(address);
}
string result;
if (!runtime.ReadString(str, out result))
{
throw new MemoryReadException(str);
}
return(result);
}