From: David Gibson <dwg@au1.ibm.com>
To: "K.Prasad" <prasad@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org,
Thiago Jung Bauermann <bauerman@br.ibm.com>,
Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Subject: Re: [PATCH 2/2] [PowerPC Book3E] Introduce new ptrace debug feature flag
Date: Wed, 24 Aug 2011 14:00:10 +1000 [thread overview]
Message-ID: <20110824040010.GC30097@yookeroo.fritz.box> (raw)
In-Reply-To: <20110823092756.GB2962@in.ibm.com>
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
next prev parent reply other threads:[~2011-08-24 4:00 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-19 7:45 [PATCH 0/2] Changes to PowerPC ptrace flags using watchpoints K.Prasad
2011-08-19 7:51 ` [PATCH 1/2] [hw-breakpoint] Use generic hw-breakpoint interfaces for new PPC ptrace flags K.Prasad
2011-08-23 5:08 ` David Gibson
2011-08-23 9:25 ` K.Prasad
2011-08-24 3:59 ` David Gibson
2011-08-26 9:35 ` K.Prasad
2011-09-16 7:27 ` K.Prasad
2011-10-12 3:33 ` David Gibson
2011-10-12 17:39 ` K.Prasad
2011-11-28 3:11 ` David Gibson
2011-12-01 10:20 ` K.Prasad
2011-12-07 19:01 ` Thiago Jung Bauermann
2011-12-08 8:30 ` K.Prasad
2011-08-19 7:53 ` [PATCH 2/2] [PowerPC Book3E] Introduce new ptrace debug feature flag K.Prasad
2011-08-23 5:09 ` David Gibson
2011-08-23 9:27 ` K.Prasad
2011-08-24 4:00 ` David Gibson [this message]
2011-08-25 0:41 ` Thiago Jung Bauermann
2011-08-26 4:41 ` David Gibson
2011-08-31 0:27 ` Thiago Jung Bauermann
2011-09-19 1:10 ` David Gibson
-- strict thread matches above, loose matches on Subject: below --
2011-12-08 11:12 [PATCH 0/2] Changes to PowerPC ptrace flags using watchpoints - v2 K.Prasad
2011-12-08 11:23 ` [PATCH 2/2] [PowerPC Book3E] Introduce new ptrace debug feature flag K.Prasad
2011-12-21 0:55 ` David Gibson
2011-12-22 9:34 ` K.Prasad
2012-01-16 8:18 ` David Gibson
2012-02-15 22:18 ` Thiago Jung Bauermann
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