PPC LB+ctrl+isyncpa "DpCtrldW Rfe ISyncdRWPA RfeAP" Cycle=RfeAP DpCtrldW Rfe ISyncdRWPA Prefetch= Com=Rf Rf Orig=DpCtrldW Rfe ISyncdRWPA RfeAP { ok=1; 0:r2=x; 0:r4=y; 1:r2=y; 1:r4=x; 1:r6=ok; } P0 | P1 ; lwz r1,0(r2) | lwz r1,0(r2) ; cmpw r1,r1 | isync ; beq LC00 | li r3,1 ; LC00: | lwarx %sta,r0,r4 ; li r3,1 | stwcx. r3,r0,r4 ; stw r3,0(r4) | bne Fail1 ; | b Exit1 ; | Fail1: ; | li r5,0 ; | stw r5,0(r6) ; | Exit1: ; exists (ok=1 /\ 0:r1=1 /\ 1:r1=1)