Signed Fields

[AlexLao512]

I was looking through the SystemRDL 2.0 specification, does anyone have an idea how to specify that an arbitrary width field (say, 5 bits) is a signed value so sign extension can either be done automatically in generated code or something?

[amykyta3]

Unfortunately the RDL spec doesn't define anything for signed fields.
In fact, the spec actually explicitly states that all integers are treated as unsigned (See 4.6).

That said, I suppose it would be possible to extend support for signed fields with a user-defined property.

[AlexLao512]

Yea, this is approximately what I concluded as well, just wasn't sure if I missed something in the specifications.