> 2011-05-26  Mike Frysinger  <vapier@gentoo.org>
> 
> 	* remote-sim.c (gdbsim_open): Add the strlen of " --sysroot=" and
> 	gdb_sysroot to the "len" variable.  Append both to "arg_buf".

It turns out that this is breaking some simulators, at least the ppc sim:

        % powerpc-elf-gdb
        (gdb) target sim
        Unrecognized option

The problem is that some sims have their own argument parsing,
and they sometimes reject the --sysroot= option.  Here is the patch
I just checked in to fix the ppc, but I think that other simulators
might have the same problem.  I checked a few, and I think that
the d10v sim, for instance, will also need to be updated).

So, we have a decision to make: Either do a pass over all simulators,
and fix the ones that need fixing, or revert (in which case my ppc
patch also needs to be reverted).

-- 
Joel