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Re: QNX binutils targets
- From: "Graeme Peterson" <gp at qnx dot com>
- To: hjl at lucon dot org (H. J. Lu)
- Cc: segher at koffie dot nl (Segher Boessenkool), binutils at sources dot redhat dot com
- Date: Fri, 25 Oct 2002 11:07:10 -0400 (EDT)
- Subject: Re: QNX binutils targets
Hi, all.
I am in the process of adding the ELFOSABI_QNX. I have some questions and
concerns.
- How will changing the OSABI and bfd names affect our existing tools
(gcc, gdb, etc...) that use the generic ones? I had tried to simply
extend the existing bfd's, not realizing the concequences in the
namimg when targetting all.
- My current approach is to add the define in include/elf/common.h:
#define ELFOSABI_QNX 13 /* QNX Neutrino */
Then I have added a function in elf32-qnx.c, with a bfd_backend
define in elf32-qnx.h:
#undef elf_backend_post_process_headers
#define elf_backend_post_process_headers elf_qnx_post_process_headers
This is a copy of the similar function in elf32-i386.c, the FREEBSD's
elf_i386_post_process_headers.
- Then I want to change the config.bfd, so that our bfd vectors will default
to a non-qnx specific one, but incllude them all, ie:
arm-*-nto* | nto*arm*)
targ_defvec=bfd_elf32_littlearm_vec
targ_selvecs="bfd_elf32_bigarm_vec bfd_elf32_littlearmqnx_vec bfd_elf32_bigarmqnx_vec"
;;
i[3456]86-*-nto-qnx*)
targ_defvec=bfd_elf32_i386_vec
targ_selvecs="i386coff_vec bfd_elf32_i386qnx_vec"
;;
Comments? Have I got it right, or am I missing something?
Thanks.
GP
>
> On Fri, Oct 25, 2002 at 10:54:52AM +0930, Alan Modra wrote:
> > On Thu, Oct 24, 2002 at 11:32:00PM +0200, Segher Boessenkool wrote:
> > [zapping targets from _bfd_target_vector]
> > > which makes things work as I like. It seems this is done for some other
> > > ambiguously detected formats as well.
> >
> > Yes, that works. The trouble is that your selection of targets to
> > "make things work as I like" may not suit everybody.
> >
>
> QNX should add ELFOSABI_QNX and use it.
>
>
> H.J.
>