Cygwin, gdb, ocd, raven, mpc555

Cygwin, gdb, ocd, raven, mpc555

[Martin Winistörfer]

Hi,

I read several mails on this mailing list about ocd and
got finally really confused. I would like to set up a system
with winnt, cygwin, gdb as debugger, a raven interface from
Macraigor and as target an MPC555.

I got to the conclusion to download the gdb-5.0 version
from www.ocdemon.com as some guys were told on the
list. This version supports ocd as well as the raven interface.

But I found out the this gdb-5.0 does not support the the
"set architecture powerpc:MPC8XX" option. So I can´t set the IMMR register.
This is the first register I have to set (in the gdbinit file) before I can
set
every other register. So this gdb-5.0 is useless without the possibility to
set the IMMR.  It of course supports the "target ocd raven 0"
option to set the proper target. The strange thing is, macraigor as well
as ocdemon say this gdb-5.0 works with mpc555. So I suppose someone
is running on a MPC5XX or MPC8XX platform with this gdb-5.0. But
how do they set the IMMR?

I now downloaded gdb-5.1.1 and compiled it. Now I can set the MPC8XX
architecture but not the "target ocd raven 0"!!!!! I know there was a
discussion
about the wiggler.dll. And I also know that the ocd files (ocd.c, ppc_bdm.c)
have been modified (thats porbably the reason why the raven target doesn´t
work)
and it seems to my that it works only with the wiggler.

Well but what shall I do now do build up my system? Can anyone help me?

I tought maybe I can remove the current ocd files in the gdb-5.1.1 source
code
and replace it with the modified ocd files from www.ocdemon.com. But it
seems not to go so easily. I´m not a hacker which can do this easily.

Thanks for every help,

Martin Winistörfer

Re: Cygwin, gdb, ocd, raven, mpc555

[William A. Gatliff]

Martin:


<rant>

Ah yes, the double-edged sword of proprietary backends to gdb...  :^(

</rant>

One solution, if your budget will stand for it, is to go to the
Abatron BDI2000/gdb.  It speaks gdb's native protocol over ethernet,
i.e. it's an ethernet-to-BDM+JTAG bridge that looks like a remote
debugging target.  The firmware in the bridge isn't Free, but at least
it speaks a Free protocol.

I'm using the CPU32 version, which uses BDM on the target side and
works like a champ.  I've run it against every released version of gdb
since 5.0 and it seems to do fine without any modification to gdb
whatsoever.  I suspect the same would be true for PPC.

The hardware unit is about $2k, which seems cost-effective for the
serious user who doesn't want to spend time mucking around with DLLs
and the like.  It's cost-effective to me, anyway, and I bought it with
my own money.  And since my workstation choices are Solaris and Linux,
the Wiggler isn't really an option anyway.

I don't have any financial interests in Abatron, I'm just a satisfied
user.  I bought mine through http://ultsol.com.

b.g.




On Mon, Jun 17, 2002 at 09:16:18AM +0200, Martin Winistörfer wrote:
> 
> Hi,
> 
> I read several mails on this mailing list about ocd and
> got finally really confused. I would like to set up a system
> with winnt, cygwin, gdb as debugger, a raven interface from
> Macraigor and as target an MPC555.
> 
> I got to the conclusion to download the gdb-5.0 version
> from www.ocdemon.com as some guys were told on the
> list. This version supports ocd as well as the raven interface.
> 
> But I found out the this gdb-5.0 does not support the the
> "set architecture powerpc:MPC8XX" option. So I can´t set the IMMR register.
> This is the first register I have to set (in the gdbinit file) before I can
> set
> every other register. So this gdb-5.0 is useless without the possibility to
> set the IMMR.  It of course supports the "target ocd raven 0"
> option to set the proper target. The strange thing is, macraigor as well
> as ocdemon say this gdb-5.0 works with mpc555. So I suppose someone
> is running on a MPC5XX or MPC8XX platform with this gdb-5.0. But
> how do they set the IMMR?
> 
> I now downloaded gdb-5.1.1 and compiled it. Now I can set the MPC8XX
> architecture but not the "target ocd raven 0"!!!!! I know there was a
> discussion
> about the wiggler.dll. And I also know that the ocd files (ocd.c, ppc_bdm.c)
> have been modified (thats porbably the reason why the raven target doesn´t
> work)
> and it seems to my that it works only with the wiggler.
> 
> Well but what shall I do now do build up my system? Can anyone help me?
> 
> I tought maybe I can remove the current ocd files in the gdb-5.1.1 source
> code
> and replace it with the modified ocd files from www.ocdemon.com. But it
> seems not to go so easily. I´m not a hacker which can do this easily.
> 
> Thanks for every help,
> 
> Martin Winistörfer
> 
> 

-- 
Bill Gatliff
bgat@billgatliff.com