Run S+sync+addr in model, using ppcmem
PPC S+sync+addr "SyncdWW Rfe DpAddrdW Wse" Cycle=Rfe DpAddrdW Wse SyncdWW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r5=x; } P0 | P1 ; li r1,2 | lwz r1,0(r2) ; stw r1,0(r2) | xor r3,r1,r1 ; sync | li r4,1 ; li r3,1 | stwx r4,r3,r5 ; stw r3,0(r4) | ; exists (x=2 /\ 1:r1=1)