PPC PPC047-L "PodWW Wse Rfi DpAddrdW Wse Rfi DpAddrdW" {0:r8=L_y; 0:r7=L_x; 1:r9=L_y; 1:r10=L_x; 0:r2=x; 0:r6=y; 1:r2=y; 1:r6=z; 1:r8=x;} P0 | P1 ; li r1,2 | li r1,2 ; LOCK(r7) | LOCK(r9) ; stw r1,0(r2) | stw r1,0(r2) ; UNLOCK(r7) | UNLOCK(r9) ; LOCK(r7) | LOCK(r9) ; lwz r3,0(r2) | lwz r3,0(r2) ; UNLOCK(r7) | UNLOCK(r9) ; xor r4,r3,r3 | xor r4,r3,r3 ; li r5,1 | li r5,1 ; LOCK(r8) | stwx r5,r4,r6 ; stwx r5,r4,r6 | li r7,1 ; UNLOCK(r8) | LOCK(r10) ; | stw r7,0(r8) ; | UNLOCK(r10) ; forall (0:r3=2 /\ (1:r3=2 /\ (x=2 /\ y=1 \/ x=1 /\ (y=2 \/ y=1)) \/ 1:r3=1 /\ x=1 /\ y=1) \/ 0:r3=1 /\ 1:r3=2 /\ x=1 /\ y=1)