On 4/11/19 12:08 AM, David Hildenbrand wrote: > A galois field multiplication in field 2 is like binary multiplication, > however instead of doing ordinary binary additions, xor's are performed. > So no carries are considered. > > Implement all variants via helpers. s390_vec_sar() and s390_vec_shr() > will be reused later on. > > Signed-off-by: David Hildenbrand <da...@redhat.com> > --- > target/s390x/helper.h | 8 ++ > target/s390x/insn-data.def | 4 + > target/s390x/translate_vx.inc.c | 38 ++++++++ > target/s390x/vec_int_helper.c | 168 ++++++++++++++++++++++++++++++++ > 4 files changed, 218 insertions(+)
FYI, this is now the 4th copy of this operation. arm: pmull x86: pclmulqdq ppc: vpmsum[bhwd] We really should promote this to generic. But that can come later, Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
