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Re: [RFC] mips gdb fails to detect o32
- From: Michael Snyder <msnyder at redhat dot com>
- To: Daniel Jacobowitz <drow at mvista dot com>
- Cc: gdb-patches at sources dot redhat dot com
- Date: Wed, 07 Aug 2002 17:38:39 -0700
- Subject: Re: [RFC] mips gdb fails to detect o32
- Organization: Red Hat, Inc.
- References: <3D51BA0F.9A825A12@redhat.com> <20020808004631.GA11507@nevyn.them.org>
Daniel Jacobowitz wrote:
>
> On Wed, Aug 07, 2002 at 05:23:43PM -0700, Michael Snyder wrote:
> > Well, I just discovered that gdb is failing to detect the o32 abi
> > when debugging the output of the native Irix compiler. This patch
> > seems to help.
> >
> > The idea here is, if it's not n32, then if it is MIPS_ARCH_2,
> > then it must be o32. However, I've no idea if that's right --
> > I just know it works so far as I've been able to test it.
> >
> > Unfortunately, I haven't been able to test it against EABI,
> > and I haven't been able to test it against gcc, because gcc
> > doesn't generate o32.
>
> GCC does generate O32.
Really? How? It rejects "-mabi=o32".
> GNU binutils won't use the ARCH/ABI bits in the
> ELF header in a lot of cases, though; and it emits a better way to
> identify the ABI.
Can you be more specific?
>
> I don't think keying off MIPS II makes a heck of a lot of sense here...
> depending on what SGI's tools put out you might want to default to O32
> if no ABI tag bits are present, but that's a little shadier.
Andrew added code to make it default to n32 in Novermber 2000.
I wouldn't want to overrule him... ;-)