On Tue, Aug 23, 2011 at 02:57:56PM +0530, K.Prasad wrote:
> On Tue, Aug 23, 2011 at 03:09:31PM +1000, David Gibson wrote:
> > On Fri, Aug 19, 2011 at 01:23:38PM +0530, K.Prasad wrote:
> > >
> > > While PPC_PTRACE_SETHWDEBUG ptrace flag in PowerPC accepts
> > > PPC_BREAKPOINT_MODE_EXACT mode of breakpoint, the same is not intimated
> > > to the
> > > user-space debuggers (like GDB) who may want to use it. Hence we
> > > introduce a
> > > new PPC_DEBUG_FEATURE_DATA_BP_EXACT flag which will be populated on the
> > > "features" member of "struct ppc_debug_info" to advertise support for the
> > > same on Book3E PowerPC processors.
> >
> > I thought the idea was that the BP_EXACT mode was the default - if the
> > new interface was supported at all, then BP_EXACT was always
> > supported. So, why do you need a new flag?
> >
>
> Yes, BP_EXACT was always supported but not advertised through
> PPC_PTRACE_GETHWDBGINFO. We're now doing that.
I can see that. But you haven't answered why.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
