Re: Sumbitting ip2k port for review.

[Andrew Cagney <ac131313 at redhat dot com>]

[I've replied on GDB patches.  For reference the code is attached.]

> Hi all,
>
> I would like to submit for review the ip2k port of gdb that I have been
> working on for a while.
>
> A copyright assignment has been signed by Ubicom.
>
> Any feedback is welcome.
You'll probably want to look over the thread:
http://sources.redhat.com/ml/gdb/2002-02/msg00139.html
my follow up contains a check list.

The other question is who contributed to this work?  `Java at 
silicondust' appears to have being doing some stuff (or is that your 
alter ego?).  I believe David Taylor may have also worked on the file 
ip2k-tdep.c in the past?  I know that the problems he encountered with 
the ip2k were one of the motivations behind overhauling pseudo-registers.

Having looked ip2k-tdep.c, some quick tweaks:

- the log messages should all go to gdb_stdlog, not gdb_stdout.

- instead of starting a message with "warning: ..." or similar, just 
call warning(), or internal_error(), or ...

- The other targets have the command `set debug <cpu> <int>' to allow 
the run-time control of the debug variable.  That should be included. 
Just borrow/tweak the code from mips-tdep.c say.

- it creates a tm-ip2k.h file.  Per the above, all new targets need to 
be pure multi-arched (with one shared library exception)

- ``__'' shouldn't be avoided as a prefix to symbols.  A leading `_' is 
reserved for the system's namespace.

- the registers are named ``r$80'' giving ``$r$80''.  I don't know if 
that is a good idea.  Long term, as GDB's parser develops, you'll likely 
find that this no longer works.  Any reason to not simply use $r80?

- what is IGNORE_HELPER_CALL?

- take care when printing addresses.  0x%08lx won't work portably. 
"0x%s", paddr (addr)" works better.

I'll look at ip2k-registers.h, remote-ip2k* later (I've got an OC target 
to help with first).  I've also, unfortunatly, put this out just as the 
last of the frame overhaul goes in.

Andrew

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