On Wed, 2016-07-27 at 12:19 +1000, David Gibson wrote: > twi etc will generally resume from the next instruction if they trap, > yes? In which case I'm a bit confused by the nip - 4. But possibly I > just haven't correctly followed all the nip update logic changed by > this patch.
>From the ISA (Program Check interrupt) Trap A Trap type Program interrupt is generated when any of the conditions specified in a Trap instruction is met. The following registers are set: SRR0 For all Program interrupts except a Float- ing-Point Enabled Exception type Program interrupt, set to the effective address of the instruction that caused the corresponding exception. Cheers, Ben.
