PPC X29 "Rfe LwSyncdRW Wse LwSyncdWW Rfe DpCtrlIsyncdR Fre" { 0:r2=z; 1:r2=z; 1:r4=x; 2:r2=x; 2:r4=y; 3:r2=y; 3:r4=z; } P0 | P1 | P2 | P3 ; li r1,1 | lwz r1,0(r2) | li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | lwsync | stw r1,0(r2) | cmpw r1,r1 ; | li r3,1 | lwsync | beq LC00 ; | stw r3,0(r4) | li r3,1 | LC00: ; | | stw r3,0(r4) | isync ; | | | lwz r3,0(r4) ; exists (x=2 /\ 1:r1=1 /\ 3:r1=1 /\ 3:r3=0)