Run IRIW+dsb+po in model, using armmem
ARM IRIW+dsb+po "Rfe DSBdRR Fre Rfe PodRR Fre" Cycle=Rfe PodRR Fre Rfe DSBdRR Fre { %x0=x; %x1=x; %y1=y; %y2=y; %y3=y; %x3=x; } P0 | P1 | P2 | P3 ; MOV R0, #1 | LDR R0, [%x1] | MOV R0, #1 | LDR R0, [%y3] ; STR R0, [%x0] | DSB | STR R0, [%y2] | LDR R1, [%x3] ; | LDR R1, [%y1] | | ; exists (1:R0=1 /\ 1:R1=0 /\ 3:R0=1 /\ 3:R1=0)