Re: MIPS targets broken by dummy frame/regcache changes

[Andrew Cagney <ac131313 at redhat dot com>]

> @@ -28,9 +29,7 @@
>  int
>  mips_linux_cannot_fetch_register (int regno)
>  {
> -  if (regno >= FP_REGNUM)
> -    return 1;
> -  else if (regno == PS_REGNUM)
> +  if (regno == PS_REGNUM)
>      return 1;
>    else if (regno == ZERO_REGNUM)
>      return 1;
> @@ -41,9 +40,7 @@ mips_linux_cannot_fetch_register (int re
>  int
>  mips_linux_cannot_store_register (int regno)
>  {
> -  if (regno >= FP_REGNUM)
> -    return 1;
> -  else if (regno == PS_REGNUM)
> +  if (regno == PS_REGNUM)
>      return 1;
>    else if (regno == ZERO_REGNUM)
>      return 1;
>
> It's wrong.  First of all, you changed the behavior for registers above
> FP_REGNUM, like UNUSED_REGNUM.  Secondly, FP_REGNUM did not become OK
> to fetch/store after this patch.  Just the numbering changed.
>
> I'll fix it in a little bit.
Ulgh, what was I thinking.

The reggroup code will let this be fixed properly - can finally specify 
exactly which registers should be saved/restored across an inferior 
function call.

Andrew