/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="anILOpInfo">See base class documentation.</param>
/// <param name="aScannerState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
/// <exception cref="System.NotSupportedException">
/// Thrown if the value to store is floating point.
/// </exception>
public override string Convert(ILOpInfo anILOpInfo, ILScannerState aScannerState)
{
StringBuilder result = new StringBuilder();
int metadataToken = Utils.ReadInt32(anILOpInfo.ValueBytes, 0);
FieldInfo theField = aScannerState.CurrentILChunk.Method.Module.ResolveField(metadataToken);
string fieldID = aScannerState.GetStaticFieldID(theField);
int size = Utils.GetNumBytesForType(theField.FieldType);
bool isFloat = Utils.IsFloat(theField.FieldType);
StackItem value = aScannerState.CurrentStackFrame.Stack.Pop();
if (isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Storing static fields of type float not supported yet!");
}
if (size == 1)
{
result.AppendLine("pop dword eax");
result.AppendLine(string.Format("mov byte [{0}], al", fieldID));
}
else if (size == 2)
{
result.AppendLine("pop dword eax");
result.AppendLine(string.Format("mov word [{0}], ax", fieldID));
}
else if (size == 4)
{
result.AppendLine("pop dword eax");
result.AppendLine(string.Format("mov dword [{0}], eax", fieldID));
}
else if (size == 8)
{
result.AppendLine("pop dword eax");
result.AppendLine(string.Format("mov byte [{0}], eax", fieldID));
result.AppendLine("pop dword eax");
result.AppendLine(string.Format("mov byte [{0}+4], eax", fieldID));
}
return result.ToString().Trim();
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="anILOpInfo">See base class documentation.</param>
/// <param name="aScannerState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
/// <exception cref="System.NotSupportedException">
/// Thrown when loading a static float field.
/// </exception>
public override string Convert(ILOpInfo anILOpInfo, ILScannerState aScannerState)
{
StringBuilder result = new StringBuilder();
//Load static field
//Load the metadata token used to get the field info
int metadataToken = Utils.ReadInt32(anILOpInfo.ValueBytes, 0);
//Get the field info for the field to load
FieldInfo theField = aScannerState.CurrentILChunk.Method.Module.ResolveField(metadataToken);
//Get the ID (i.e. ASM label) of the field to load
string fieldID = aScannerState.GetStaticFieldID(theField);
//Load the field or field address
switch ((OpCodes)anILOpInfo.opCode.Value)
{
case OpCodes.Ldsfld:
{
int size = Utils.GetNumBytesForType(theField.FieldType);
bool isFloat = Utils.IsFloat(theField.FieldType);
if (isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Loading static fields of type float not supported yet!");
}
if(size == 1)
{
result.AppendLine("xor eax, eax");
result.AppendLine(string.Format("mov byte al, [{0}]", fieldID));
result.AppendLine("push dword eax");
}
else if(size == 2)
{
result.AppendLine("xor eax, eax");
result.AppendLine(string.Format("mov word ax, [{0}]", fieldID));
result.AppendLine("push dword eax");
}
else if(size == 4)
{
result.AppendLine(string.Format("mov dword eax, [{0}]", fieldID));
result.AppendLine("push dword eax");
}
else if (size == 8)
{
result.AppendLine(string.Format("mov dword eax, [{0}+4]", fieldID));
result.AppendLine("push dword eax");
result.AppendLine(string.Format("mov dword eax, [{0}]", fieldID));
result.AppendLine("push dword eax");
}
aScannerState.CurrentStackFrame.Stack.Push(new StackItem()
{
isFloat = isFloat,
sizeOnStackInBytes = (size == 8 ? 8 : 4),
isGCManaged = Utils.IsGCManaged(theField.FieldType)
});
}
break;
case OpCodes.Ldsflda:
//Load the address of the field i.e. address of the ASM label
result.AppendLine(string.Format("push dword {0}", fieldID));
aScannerState.CurrentStackFrame.Stack.Push(new StackItem()
{
isFloat = false,
sizeOnStackInBytes = 4,
isGCManaged = false
});
break;
}
return result.ToString().Trim();
}