Support New Target in GDB

Support New Target in GDB

[Cai Qian]

Hi,

I would like to add a new target to GDB, and then use the following command,

  configure --target=arc-elf

However, only got message,

  ...
  check for X... libraries, headers
  configure: error: "*** GDB does not support target arc-unknonw-elf"
  make[1]: *** [configure-gdb] Error 1
  ...

I suppose ARC has already been supported by BFD, so I have followed
instructions here
http://sources.redhat.com/gdb/current/onlinedocs/gdbint_9.html#SEC83

In addtion, I have modified gdb/Makefile.in to add rule for
arc-tdep.o. are there other things missing?

Qian

Re: Support New Target in GDB

[Daniel Jacobowitz]

On Sun, Sep 17, 2006 at 02:16:55PM +0100, Cai Qian wrote:
> I suppose ARC has already been supported by BFD, so I have followed
> instructions here
> http://sources.redhat.com/gdb/current/onlinedocs/gdbint_9.html#SEC83
> 
> In addtion, I have modified gdb/Makefile.in to add rule for
> arc-tdep.o. are there other things missing?

Pick some other target, and search for places it is handled.  The next
that I can think of is gdb/configure.tgt.

-- 
Daniel Jacobowitz
CodeSourcery

Re: Support New Target in GDB

[s88]

On 9/18/06, s88 <dave.tw@gmail.com> wrote:
>
> On 9/17/06, Daniel Jacobowitz <drow@false.org> wrote:
>
>
> >  On Sun, Sep 17, 2006 at 02:16:55PM +0100, Cai Qian wrote:
> > > I suppose ARC has already been supported by BFD, so I have followed
> > > instructions here
> > >  http://sources.redhat.com/gdb/current/onlinedocs/gdbint_9.html#SEC83
> > >
> > > In addtion, I have modified gdb/Makefile.in to add rule for
> > > arc-tdep.o. are there other things missing?
> >
> > Pick some other target, and search for places it is handled.  The next
> > that I can think of is gdb/configure.tgt.
> >
> > --
> > Daniel Jacobowitz
> > CodeSourcery
I know the  target simulator is generated by the CGEN progect
http://sourceware.org/cgen/

but the CGEN is using the scheme (LISP) been the architecture
description language...
Does anyone know there exist another sulotion to generate the target simulator?!

Dave.

-- 
System  on Chip Design  Lab.
Dept. of Computer Science and Information Engineering,
National Chung Cheng University
E-mail : s88.tw@acm.org

Re: Support New Target in GDB

[Ramana Radhakrishnan]

Hi, 

Which ARC do you want to run gdb for ? The ARC gdb is not supported in
the mainline sources yet . Maybe you want to look at
http://arc-linux.org for more info. 

cheers
-Ramana

P.S. Sorry about the commercial for others reading this. 

On Sun, 2006-09-17 at 14:16 +0100, Cai Qian wrote:
> Hi,
> 
> I would like to add a new target to GDB, and then use the following command,
> 
>   configure --target=arc-elf
> 
> However, only got message,
> 
>   ...
>   check for X... libraries, headers
>   configure: error: "*** GDB does not support target arc-unknonw-elf"
>   make[1]: *** [configure-gdb] Error 1
>   ...
> 
> I suppose ARC has already been supported by BFD, so I have followed
> instructions here
> http://sources.redhat.com/gdb/current/onlinedocs/gdbint_9.html#SEC83
> 
> In addtion, I have modified gdb/Makefile.in to add rule for
> arc-tdep.o. are there other things missing?
> 
> Qian
-- 
Ramana Radhakrishnan
GNU Tools
Celunite Inc (www.celunite.com)

RE: Support New Target in GDB

[Michael Snyder]

> I would like to add a new target to GDB, and then use the following command,
> 
>  configure --target=arc-elf

Some of the steps you will need to do:

 * add entries to gdb/configure.tgt for your arc-elf target.
 * implement a source module gdb/arc-tdep.c
 * add rule for arc-tdep.o to Makefile.in
 * add configure directory gdb/config/arc.
   Ah, wait -- I see that it's already there, but it's empty.
 * In the configure directory, you may add bits such as a
   target makefile fragment (eg. "arc.mt"), which will be
   added to the Makefile at configure time

When I need to add a new target, I usually pick an existing target 
to look toward as an example.  Of course it helps to pick an example
that is similar to your target.  If your target is native linux, for
instance, you might pick sparc64-*-linux to investigate / emulate.
OTOH, if you're doing a simple embedded target, or maybe a bare-bones
simulator, you might pick eg. the d10v or m32r.

Re: Support New Target in GDB

[Daniel Jacobowitz]

On Mon, Sep 18, 2006 at 11:34:43AM -0700, Michael Snyder wrote:
>  * add configure directory gdb/config/arc.
>    Ah, wait -- I see that it's already there, but it's empty.

That would be:

2002-08-06  Andrew Cagney  <cagney@redhat.com>

        * configure.tgt: Make arc-*-* obsolete.
        * NEWS: Mention that arc-*-* has been identifed as obsolete.
        * MAINTAINERS: Make arc-elf obsolete.
        * arc-tdep.c: Make file obsolete.
        * config/arc/arc.mt: Ditto.
        * config/arc/tm-arc.h: Ditto.

(I do not recommend anyone working with arc use the old port as a base;
it's worth redoing from scratch, since it stood still while GDB
changed).

-- 
Daniel Jacobowitz
CodeSourcery