Re: gdb port to or1k

[Andrew Cagney <ac131313@cygnus.com>]

Marko Mlinar wrote:
> 
> > Many host systems that GDB supports don't even have parallel ports.
> > Those that do don't suport the same set of capabilites (other than
> > open/close and write, those are pretty standard :-).

> We are only interested to add debugging support for host that
> will be really used e.g. we don't have any interest at all to use arm host.
> So we can assume, host should be able to print and thus have printer port.
> Do you perhaps know if this will work for SUN? And HP machines?
> Is there any way to easily configure this, if platforms use different IOCTL
> numbers? (not to include #ifdefs)
> And on the other hand we don't wan't to use special driver for every
> platform...
> Well, in any case we can write centronics parallel port "compatible" drivers
> for those hosts we want to have supported.

Provided your target is implemented correctly it will just build and
work from any host.  There is also gdb/ser-unix.c which addresses many
of the portability issues (provided it is talking to something that
looks like a serial device).

One thing, people have found that trying to bash bits through lpt can be
really slow.  There is an open source project that included a (linux)
device driver to do that bit banging (I've lost the url? :-( ).

The GDB home page also lists several open source remote servers that you
might be interested in.

	Andrew