From: Andreas Schwab <schwab@xxxxxxxxxxxxxx> > Sent: 16 December 2022 15:20 > > On Dez 16 2022, David Laight wrote: > > > 'cs' and 'ct' should be input parameters. > > They are (and output as well). Right, but the 'output' values aren't needed and get discarded because the asm block in inside a static inline. It could be a recipe just waiting to go wrong. But I bet the actual problem is the output register aliasing one of the inputs and then reading from very low user addresses - I bet they don't fault on m68k. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)