[MIPS] Fix fpu_save_double on 64-bit.
> Without this fix, _save_fp() in 64-bit kernel is seriously broken.
>
> ffffffff8010bec0 <_save_fp>:
> ffffffff8010bec0: 400d6000 mfc0 t1,c0_status
> ffffffff8010bec4: 000c7140 sll t2,t0,0x5
> ffffffff8010bec8: 05c10011 bgez t2,ffffffff8010bf10 <_save_fp+0x50>
> ffffffff8010becc: 00000000 nop
> ffffffff8010bed0: f4810328 sdc1 $f1,808(a0)
> ...
Fix register usage in fpu_save_double() and make fpu_restore_double()
more symmetric with fpu_save_double().
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
3 files changed