PPC LB+lwsyncra+popa "LwSyncdRWRA RfeAP PodRWPA RfeAR" Cycle=RfeAP PodRWPA RfeAR LwSyncdRWRA Prefetch= Com=Rf Rf Orig=LwSyncdRWRA RfeAP PodRWPA RfeAR { ok=1; 0:r2=x; 0:r4=y; 0:r6=ok; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; lwarx r1,r0,r2 | lwz r1,0(r2) ; lwsync | li r3,1 ; li r3,1 | lwarx %sta,r0,r4 ; lwarx %sta,r0,r4 | stwcx. r3,r0,r4 ; stwcx. r3,r0,r4 | bne Fail1 ; bne Fail0 | b Exit1 ; b Exit0 | Fail1: ; Fail0: | li r5,0 ; li r5,0 | stw r5,0(r6) ; stw r5,0(r6) | Exit1: ; Exit0: | ; exists (ok=1 /\ 0:r1=1 /\ 1:r1=1)