Re: how close to binutils-2.12 previews

["Maciej W. Rozycki" <macro at ds2 dot pg dot gda dot pl>]

On Fri, 15 Feb 2002, Thiemo Seufer wrote:

> > +      if (dbl != HAVE_64BIT_ADDRESSES)
> > +	{
> > +	  if (dbl)
> > +	    as_warn (_("dla instruction used in 32-bit mode"));
> > +	  else
> > +	    as_warn (_("la instruction used in 64-bit mode"));
> > +	}
> 
> It's valid to use 64bit opcodes in 32bit object format. Warnings
> would be misleading in this case. I had this code in my private
> tree for a while but didn't contribute it due to testsuite failures
> caused by it.

 But you can't express all relocations that are needed by "dla".  Also
what would you need 64-bit addressing for in a 32-bit object?  None of
sections can lie outside the 32-bit address space, so you'll never get a
symbol that needs "dla" to take address of (IOW, a "dla" will always do
the same that a "la" but with more instructions).

> >  #ifdef BFD64
> >    mips64*el-*-linux*)
> > -    targ_defvec=bfd_elf32_tradlittlemips_vec
> > -    targ_selvecs="bfd_elf32_tradbigmips_vec bfd_elf64_tradlittlemips_vec bfd_elf64_tradbigmips_vec"
> > +    targ_defvec=bfd_elf64_tradlittlemips_vec
> > +    targ_selvecs="bfd_elf64_tradbigmips_vec bfd_elf32_tradlittlemips_vec bfd_elf32_tradbigmips_vec"
> >      ;;
> >    mips64*-*-linux*)
> > -    targ_defvec=bfd_elf32_tradbigmips_vec
> > -    targ_selvecs="bfd_elf32_tradlittlemips_vec bfd_elf64_tradbigmips_vec bfd_elf64_tradlittlemips_vec"
> > +    targ_defvec=bfd_elf64_tradbigmips_vec
> > +    targ_selvecs="bfd_elf64_tradlittlemips_vec bfd_elf32_tradbigmips_vec bfd_elf32_tradlittlemips_vec"
> >      ;;
> >  #endif
> 
> Default for mips64 is to generate 32bit code, so targ_defvec
> shouldn't be changed like this.

 This being because the 64-bit userland is not ready?  OK -- this may be
deferred until the default changes. 

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +