diff options
| author | Maciej W. Rozycki <macro@imgtec.com> | 2015-11-13 00:48:48 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-05-13 14:02:11 +0200 |
| commit | acd9e20cd9d0e6af5680e1870a966d8082a1130a (patch) | |
| tree | 7234cea74b3597fae4d3b07cf36805d8d3c185e6 /arch/mips/configs | |
| parent | 2e5832ab589459265e70163a7dea3abdc1429eb7 (diff) | |
| download | talos-obmc-linux-acd9e20cd9d0e6af5680e1870a966d8082a1130a.tar.gz talos-obmc-linux-acd9e20cd9d0e6af5680e1870a966d8082a1130a.zip | |
MIPS: math-emu: Always propagate sNaN payload in quieting
Propagate sNaN payload in quieting in the legacy-NaN mode as well. If
clearing the quiet bit would produce infinity, then set the next lower
trailing significand field bit, matching the SB-1 and BMIPS5000 hardware
implementations. Some other MIPS FPU hardware implementations do
produce the default qNaN bit pattern instead.
This reverts some changes made for semantics preservation with commit
dc3ddf42 [MIPS: math-emu: Update sNaN quieting handlers], consequently
bringing back most of the semantics from before commit fdffbafb [Lots of
FPU bug fixes from Kjeld Borch Egevang.], except from the qNaN produced
in the infinity case. Previously the default qNaN bit pattern was
produced in that case.
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11483/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/configs')
0 files changed, 0 insertions, 0 deletions
