Re: [RFC] mips gdb fails to detect o32

[Michael Snyder <msnyder at redhat dot com>]

Andrew Cagney 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.  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.
> >
> > 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.
> 
> Um, won't the final:
> 
>         if (mips_abi == MIPS_ABI_UNKNOWN)
>           mips_abi = MIPS_ABI_032;
> 
> kick in?

No, not if MIPS_ABI_DEFAULT is defined....