On 03/31/2013 04:50 PM, Peter Maydell wrote: >> > I'm a bit confused. This is the exact same algorithm that's used on ARM >> > and >> > i386. And as far as I can determine, all three platforms have the same >> > definition of "overflow". > I think it's not quite the same as ARM because the two arguments > to subtract are reversed for PPC (ie PPC is 'subtract from', not > 'subtract'). I think that means you want 'xor_tl(cpu_ov, arg0, arg2)' > for your first xor, maybe? (untested)
Oh, duh. Of course. r~
