svp64_rm += (srcwid << 6) # srcwid: bits 6-7
svp64_rm += (destwid << 4) # destwid: bits 4-5
+ # nice debug printout. (and now for something completely different)
+ # https://youtu.be/u0WOIwlXE9g?t=146
print ("svp64_rm", hex(svp64_rm), bin(svp64_rm))
print (" mmode 0 :", bin(mmode))
print (" pmask 1-3 :", bin(pmask))