Hi,
this series was originally posted by Peer Adelt some time ago[1], but still had
some problems
which I tried to fix with this patch set.
The tricky bits here were the FTOUZ and MADD/MSUB.F instructions. The latter
had the
problem of not giving back the correct NAN when the result of the add/sub of
muladd/sub
was invalid. I addressed that by fixing up the value later, which feels hacky.
I feel
the better solution would be extending softfloat to recognize ADD_NAN's and
emitting the correct NAN there. On the other hand it's a change in softfloat
for a small
edge case.
Additionally this patch set adds the UPDFL instructions.
Cheers,
Bastian
v2 -> v3:
[01/05] simplified exception flag fixup in ftouz()
[02/05] f_maddsub_nan_result() now gets a boolean value indicating whether
the muladd_negate_c flag is set.
[03/05] Allocate temporaries only when needed.
[05/05] Add fpu_set_state() to update softfloats rounding mode
[05/05] Move generation of the updfl helper to decode_rr_divide()
v1 -> v2:
[01/05] ftouz: Correctly convert the result from uint32 to f32
Bastian Koppelmann (3):
target-tricore: Added FTOUZ instruction
target-tricore: Added MADD.F and MSUB.F instructions
target-tricore: Add updfl instruction
Peer Adelt (2):
target-tricore: Added new MOV instruction variant
target-tricore: Added new JNE instruction variant
target-tricore/fpu_helper.c | 134 ++++++++++++++++++++++++++++++++++++++-
target-tricore/helper.h | 4 ++
target-tricore/translate.c | 48 ++++++++++++++
target-tricore/tricore-opcodes.h | 3 +
4 files changed, 188 insertions(+), 1 deletion(-)
--
2.10.2
