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Re: [RFC] Correct gdbserver register packets
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: gdb-patches at sources dot redhat dot com
- Cc: Pierre Muller <muller at cerbere dot u-strasbg dot fr>,Andreas Schwab <schwab at suse dot de>
- Date: Sat, 4 Jan 2003 16:56:51 -0500
- Subject: Re: [RFC] Correct gdbserver register packets
- References: <jevg2cg0og.fsf@sykes.suse.de> <5.0.2.1.2.20021126162728.02a31e50@ics.u-strasbg.fr> <20021202011500.GA19215@nevyn.them.org> <jevg2cg0og.fsf@sykes.suse.de> <5.0.2.1.2.20021203092802.034b2c20@ics.u-strasbg.fr> <20021204035534.GA16186@nevyn.them.org>
On Tue, Dec 03, 2002 at 10:55:34PM -0500, Daniel Jacobowitz wrote:
> On Tue, Dec 03, 2002 at 09:29:14AM +0100, Pierre Muller wrote:
> > At 06:21 03/12/2002, Daniel Jacobowitz wrote:
> > >On Mon, Dec 02, 2002 at 11:44:31AM +0100, Andreas Schwab wrote:
> > >> Daniel Jacobowitz <drow@mvista.com> writes:
> > >>
> > >> |> Or else Andreas's patch to decrease the number of registers. Hmm,
> > >> |> probably doing it Andreas's way is better. I'll take care of this in
> > >> |> the morning.
> > >>
> > >> My way of fixing it is not complete, I get "Wrong sized register packet"
> > >> messages from gdbserver.
> > >
> > >There's a much easier solution: change the 31 to 29, and remove the
> > >extra two registers from regformats/. I'm not familiar with any m68k
> > >stubs; do you know of any others that do or do not include the extra
> > >two registers, which GDB no longer seems to know anything about? Or
> > >are they just bogus?
> >
> >
> > config/m68k/tm-sun3.h
> > seems to use 31 registers including the two not known by
> > other m68k targets...
> > But I don't known the state of that target...
>
> "very old". It seems that the base for all/most m68k targets is to
> have 29 registers. As a result, I think this patch is the way to go.
> Could you two give it a try?
Since this worked for Andreas, I've checked it in. With appropriate
copyright date updates this time.
> 2002-11-30 Andreas Schwab <schwab@suse.de>
>
> * linux-m68k-low.c (m68k_num_regs): Define to 29 instead of 31.
>
> 2002-12-03 Daniel Jacobowitz <drow@mvista.com>
>
> * regformats/reg-m68k.dat: Remove fpcode and fpflags.
>
> Index: gdbserver/linux-m68k-low.c
> ===================================================================
> RCS file: /cvs/src/src/gdb/gdbserver/linux-m68k-low.c,v
> retrieving revision 1.3
> diff -u -p -r1.3 linux-m68k-low.c
> --- gdbserver/linux-m68k-low.c 9 Apr 2002 22:44:43 -0000 1.3
> +++ gdbserver/linux-m68k-low.c 4 Dec 2002 03:43:52 -0000
> @@ -26,7 +26,7 @@
> #include <sys/reg.h>
> #endif
>
> -#define m68k_num_regs 31
> +#define m68k_num_regs 29
>
> /* This table must line up with REGISTER_NAMES in tm-m68k.h */
> static int m68k_regmap[] =
> Index: regformats/reg-m68k.dat
> ===================================================================
> RCS file: /cvs/src/src/gdb/regformats/reg-m68k.dat,v
> retrieving revision 1.1
> diff -u -p -r1.1 reg-m68k.dat
> --- regformats/reg-m68k.dat 1 Feb 2002 22:05:28 -0000 1.1
> +++ regformats/reg-m68k.dat 4 Dec 2002 03:43:52 -0000
> @@ -31,5 +31,3 @@ expedite:sp,fp,pc
> 32:fpcontrol
> 32:fpstatus
> 32:fpiaddr
> -32:fpcode
> -32:fpflags
>
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer