Re: Fix PR 20995 for cris-linux (please have a look)

[Hans-Peter Nilsson <hans-peter dot nilsson at axis dot com>]

> Date: Fri, 27 Jan 2017 22:58:16 +1030
> From: Alan Modra <amodra@gmail.com>

Thanks for having a look.

> On Fri, Jan 27, 2017 at 01:54:11AM +0100, Hans-Peter Nilsson wrote:
> It looks fine, but please do a little more work on your target and
> convert over to using the hash table shortcuts everywhere possible.

A fair point.  I see parts of the hash-table-shortcuts framework
is just month old (lots of conversions by you for almost all
other targets, in particular for .dynbss) but other parts, like
for .got, are from 2009.

> > @@ -3787,7 +3797,8 @@ elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
> >  	    }
> >  	}
> >        else if (! CONST_STRNEQ (name, ".got")
> > -	       && strcmp (name, ".dynbss") != 0)
> > +	       && strcmp (name, ".dynbss") != 0
> > +	       && s != htab->root.sdynrelro)
> 
> This example of code in elf_cris_size_dynamic_sections is why I didn't
> convert cris at the same time I did other targets.  You're not using
> the shortcuts to .dynbss or .got and seem to be doing something weird
> in checking for ".got*".  When I'm working on non-vital changes for
> lots of targets it doesn't take much oddity in the target for me to
> leave the fix to the target maintainer, assuming the target has a
> maintainer.

I had to look up what that was about.  In all fairness, the
"weirdness" is copied over from the also unconverted
elf32-m68k.c (see top of elf32-cris.c) long before any
hash-table-shortcuts, and the quoted lines have since been
touched only by you and Nick.  At least, so says git.  Almost
identical to other targets, in particular the .got-weirdness.

Yes, it seems wrong to match (all) sections with ".got" as a
prefix, as opposed to specifically ".got" and ".got.plt".  Maybe
a misguided attempt at future-proofness and/or slipping into
using the same pattern needed for ".rela"-sections (still, maybe
name-matching isn't needed there either).

brgds, H-P