Re: [RFC/RFA] Target vectors for native Linux targets

[Ulrich Weigand <uweigand@de.ibm.com>]

Mark Kettenis wrote:

> Hmm, it would be preferable to have it the other way around, since
> that would make eliminating the nm-linux.h files, but I can see why
> you did it this way.  In the end we might just define USE_LINUX_TARGET
> if GDB_NM_FILE isn't defined.  So it's not really important.  I've
> added some more comments on the patch inline.

I guess we could make a config/nm-new-linux.h or something -- that
would be a (temporary) new nm file, but would allow to remove the
per-platform Linux nm files as platforms are converted over ...

> > To avoid calling child_xfer_memory I had to switch to using xfer_partial
> > instead.  This change also bubbled up to linux-thread-db.c.  (But seeing
> > as xfer_memory is deprecated, that's probably a good idea anyway.)
> 
> Indeed.  When I did conversions in the past the
> depreceated_xfer_memory always came back to haunt me, so we have to be
> a bit careful.  Did you test your patch on another Linux target that
> wasn't converted yet?

I tested it on s390 *without* the follow-up patch, and that went 
fine as well ...

> > What do you think of this approach?
> 
> I think this should be committed.  However, since Daniel did some work
> in this area before, I'd like to give him the opportunity to comment.
> Can you keep this patch on the backburner until he's back?

Sure.  Thanks for your comments!

> Daniels earlier attempt had linux_target accept a `struct target_ops
> *' as an argument to serve as an alternative for a plain
> inf_ptrace_target().  I thought that was necessary for i386 and sparc
> Linux targets, but I think I've convinced myself that it isn't.

Since you can always override the target functions afterwards,
I'm not sure why this would be necessary ...


Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  Linux on zSeries Development
  Ulrich.Weigand@de.ibm.com