ARM WRC+data+dsb "Rfe DpDatadW Rfe DSBdRR Fre" Cycle=Rfe DSBdRR Fre Rfe DpDatadW { %x0=x; %x1=x; %y1=y; %y2=y; %x2=x; } P0 | P1 | P2 ; MOV R0, #1 | LDR R0, [%x1] | LDR R0, [%y2] ; STR R0, [%x0] | EOR R1,R0,R0 | DSB ; | ADD R1, R1, #1 | LDR R1, [%x2] ; | STR R1, [%y1] | ; Observed 1:R0=1; 2:R0=1; 2:R1=0;