On 12.02.19 12:02, David Hildenbrand wrote: > The floating-point extension facility implemented certain changes to > BFP, HFP and DFP instructions. > > As we don't implement HFP/DFP, we can ignore those completely. Related > to BFP, the changes include > - SET BFP ROUNDING MODE (SRNMB) instruction > - BFP-rounding-mode field in the FPC register is changed to 3 bits > - CONVERT FROM LOGICAL instructions > - CONVERT TO LOGICAL instructions > - Changes (rounding mode + XxC) added to > -- CONVERT TO FIXED > -- CONVERT FROM FIXED > -- LOAD FP INTEGER > -- LOAD ROUNDED > -- DIVIDE TO INTEGER > > For TCG, we don't implement DIVIDE TO INTEGER, and it is harder to > implement, so skip that. Also, as we don't implement PFPO, we can skip > changes to that as well. The other parts are now implemented, we can > indicate the facility. > > z14 PoP mentiones that "The floating-point extension facility is installed > in the z/Architecture architectural mode. When bit 37 is one, bit 42 is > also one.", meaning that the DFP (decimal-floating-point) facility also > has to be inidicated. We can ignore that for now. > > Signed-off-by: David Hildenbrand <da...@redhat.com>
This is the same patch as 15/15, refer to 0/15 as cover letter instead. -- Thanks, David / dhildenb
