>> If this does not work, on ARM you can also hope for something like this: >> >> ADD R0, R1, R2 >> XORS R0, R2, R3 >> XORSMI R1, R2, R3 >> SWIMI #trap > > On ARM you can just check for overflow directly... > > ADDS R0, R1, R2 > SWIVS #trap
Of course, I was thinking explicitly of what happens with no MD support. Paolo
