protected void WriteInner(long offset, uint value)
{
var baseValue = UnderlyingValue;
var difference = UnderlyingValue ^ value;
var setRegisters = value & (~UnderlyingValue);
var changedRegisters = new List <RegisterField>();
foreach (var registerField in registerFields)
{
//switch is OK, because write modes are exclusive.
switch (registerField.fieldMode.WriteBits())
{
case FieldMode.Write:
if (BitHelper.AreAnyBitsSet(difference, registerField.position, registerField.width))
{
BitHelper.UpdateWith(ref UnderlyingValue, value, registerField.position, registerField.width);
changedRegisters.Add(registerField);
}
break;
case FieldMode.Set:
if (BitHelper.AreAnyBitsSet(setRegisters, registerField.position, registerField.width))
{
BitHelper.OrWith(ref UnderlyingValue, setRegisters, registerField.position, registerField.width);
changedRegisters.Add(registerField);
}
break;
case FieldMode.Toggle:
if (BitHelper.AreAnyBitsSet(value, registerField.position, registerField.width))
{
BitHelper.XorWith(ref UnderlyingValue, value, registerField.position, registerField.width);
changedRegisters.Add(registerField);
}
break;
case FieldMode.WriteOneToClear:
if (BitHelper.AreAnyBitsSet(value, registerField.position, registerField.width))
{
BitHelper.AndWithNot(ref UnderlyingValue, value, registerField.position, registerField.width);
changedRegisters.Add(registerField);
}
break;
case FieldMode.WriteZeroToClear:
if (BitHelper.AreAnyBitsSet(~value, registerField.position, registerField.width))
{
BitHelper.AndWithNot(ref UnderlyingValue, ~value, registerField.position, registerField.width);
changedRegisters.Add(registerField);
}
break;
}
}
foreach (var registerField in registerFields)
{
registerField.CallWriteHandler(baseValue, value);
}
foreach (var changedRegister in changedRegisters.Distinct())
{
changedRegister.CallChangeHandler(baseValue, UnderlyingValue);
}
CallWriteHandlers(baseValue, value);
if (changedRegisters.Any())
{
CallChangeHandlers(baseValue, UnderlyingValue);
}
var unhandledWrites = difference & ~definedFieldsMask;
if (unhandledWrites != 0)
{
parent.Log(LogLevel.Warning, TagLogger(offset, unhandledWrites, value));
}
}