PPC LB+ctrlra+isyncpa "DpCtrldWRA RfeAP ISyncdRWPA RfeAR" Cycle=RfeAP ISyncdRWPA RfeAR DpCtrldWRA Prefetch= Com=Rf Rf Orig=DpCtrldWRA RfeAP ISyncdRWPA 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) ; cmpw r1,r1 | isync ; beq LC00 | li r3,1 ; LC00: | lwarx %sta,r0,r4 ; li r3,1 | stwcx. r3,r0,r4 ; lwarx %sta,r0,r4 | bne Fail1 ; stwcx. r3,r0,r4 | b Exit1 ; bne Fail0 | Fail1: ; b Exit0 | li r5,0 ; Fail0: | stw r5,0(r6) ; li r5,0 | Exit1: ; stw r5,0(r6) | ; Exit0: | ; exists (ok=1 /\ 0:r1=1 /\ 1:r1=1)