Re: Powerpc and software single step

[Jimi Xenidis <jimix@watson.ibm.com>]

>>>>> "DJ" == Daniel Jacobowitz <drow@mvista.com> writes:

 DJ> On Tue, Aug 19, 2003 at 06:32:31PM -0400, Jimi Xenidis wrote:
 >> This sanity check is wierd, does it expect PT_STEP to be defined _and_
 >> not supported?

 DJ> It does happen.  MIPS/Linux does that sometimes, so does anything else
 DJ> where PT_STEP is restricted or broken.

heh, go figure.

 >> My first attempt was to drag ppc/rs6000 into the gdbarch world and
 >> drop the #defines all together.  However, the test (_P) rotuine tests
 >> a function pointer and it was not readily apparent how to have a set
 >> command set a function pointer or actually run code to do so. Perhaps
 >> pairing it with a gdbarch boolean?

 DJ> I'm not sure what you mean.
To quickly re-cap, I wanted to be able to switch the single step mode
dynamically by creating a "set" command.  Unfortunately:

int
gdbarch_software_single_step_p (struct gdbarch *gdbarch)
{
  gdb_assert (gdbarch != NULL);
  return gdbarch->software_single_step != NULL;
}

I do not see a way to assign this function pointer off of the set
command, unless there is a some trick I did not see.
maybe we could fix this with more code, but sadly I'm limited in my
ability to push out patches under the current circumstances.

But all of these solutions are not the real one which probably takes
more commitment then available (at least from me at the moment ;-)

-JX