On Thu, Aug 18, 2016 at 05:56:02PM +0200, Christophe Leroy wrote: > The 8xx has two special registers called EID (External Interrupt > Disable) and EIE (External Interrupt Enable) for clearing/setting > EE in MSR. It avoids the three instructions set mfmsr/ori/mtmsr or > mfmsr/rlwinm/mtmsr.
All 8xx? What other models? (5xx for example). > +/* Special MSR manipulation registers */ > +#define SPRN_EIE 80 /* External interrupt enable (EE=1, RI=1) */ > +#define SPRN_EID 81 /* External interrupt disable (EE=0, RI=1) */ > +#define SPRN_NRI 81 /* Non Recoverable interrupt (EE=0, RI=0) */ This is wrong (NRI is 82). Don't write code you cannot test / don't submit code you haven't tested? :-) Segher
