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| author | Paul Burton | 2016-04-21 15:04:54 +0200 |
|---|---|---|
| committer | Ralf Baechle | 2016-05-13 14:02:23 +0200 |
| commit | db57f29d50683afd75c7f8b9908af7669837c3a9 (patch) | |
| tree | 0811a8ef970725d4fe6d22c27d3987fcaf455fa5 /arch/mips/math-emu/cp1emu.c | |
| parent | MIPS: math-emu: Fix code indentation (diff) | |
| download | kernel-qcow2-linux-db57f29d50683afd75c7f8b9908af7669837c3a9.tar.gz kernel-qcow2-linux-db57f29d50683afd75c7f8b9908af7669837c3a9.tar.xz kernel-qcow2-linux-db57f29d50683afd75c7f8b9908af7669837c3a9.zip | |
MIPS: math-emu: Fix m{add,sub}.s shifts
The code in _sp_maddf (formerly ieee754sp_madd) appears to have been
copied verbatim from ieee754sp_add, and although it's adding the
unpacked "r" & "z" floats it kept using macros that operate on "x" &
"y". This led to the addition being carried out incorrectly on some
mismash of the product, accumulator & multiplicand fields. Typically
this would lead to the assertions "ze == re" & "ze <= SP_EMAX" failing
since ze & re hadn't been operated upon.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: e24c3bec3e8e ("MIPS: math-emu: Add support for the MIPS R6 MADDF FPU instruction")
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13159/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu/cp1emu.c')
0 files changed, 0 insertions, 0 deletions