Re: opc-file-path

[Dave Brolley <brolley at redhat dot com>]

Steve Woloschek wrote:
> I am working on a port of a new processor core and have run into an
> issue when running desc-cpu.c[c|h].
>
> ./desc-cpu.scm:1038:32: In expression (opc-file-path):
> ./desc-cpu.scm:1038:32: Unbound variable: opc-file-path
>
> It appears the scripts assume there is an '[cpu].opc' file. I noticed
> that several processors in the /cpu directory do not have a .opc file.
>   
The only one I ses is the cris.cpu file. The others are all part of 
archirectures that do have a .opc file. Not sure why cris doesn't have 
one. I've never tried to build it.
> Any thoughts on how to get around this feature?
>   
I would suggest creating a minimal .opc file. $src/cgen/cpu/i960.opc 
seems to be a minimal example you can clone. You can probably get rid of 
the CGEN_PRINT_INSN macro and keep the rest. At some point you will 
probably want to optimize the CGEN_DIS_HASH* macros for you particular port.

I hope this helps,
Dave