Re: BUG: non-fixed-length ISAs are unsupported for now

"Frank Ch. Eigler via Cgen" <[email protected]> Tue, 11 Aug 2020 12:08:47 -0400
Newsgroups gmane.comp.tools.cgen.devel
Message-ID <[email protected]>
Hi -

> I have already tried to stay within one ISA but my attempt fails. You
> may look here for full source of my try:

OK, yeah sounds like you tried along the same direction!
I don't see anything obviously wrong.

> https://github.com/b-s-a/binutils-gdb/blob/z80-cgen/cpu/z80.cpu
> (invalid decoder is generated for last 2 lines - "reti" (ED 4D) and
> "retn" (ED 45) instructions, I have tried many types of ifields with
> same result, but these are simpler to read). I cannot understand what
> I'm doing wrong.

Does it work if you comment out all other instructions?  If yes, then
I'd approach it with a bisection-like procedure to identify the real
source of conflict.

- FChE