Run LB+ctrl+addr in model, using ppcmem
PPC LB+ctrl+addr "DpCtrldW Rfe DpAddrdW Rfe" Cycle=Rfe DpAddrdW Rfe DpCtrldW { 0:r2=x; 0:r4=y; 1:r2=y; 1:r5=x; } P0 | P1 ; lwz r1,0(r2) | lwz r1,0(r2) ; cmpw r1,r1 | xor r3,r1,r1 ; beq LC00 | li r4,1 ; LC00: | stwx r4,r3,r5 ; li r3,1 | ; stw r3,0(r4) | ; exists (0:r1=1 /\ 1:r1=1)