ARM WRC+isb+addr "Rfe ISBdRW Rfe DpAddrdR Fre" Cycle=Rfe ISBdRW Rfe DpAddrdR Fre { %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] | ISB | EOR R1,R0,R0 ; | MOV R1, #1 | LDR R2, [R1,%x2] ; | STR R1, [%y1] | ; Observed 1:R0=1; 2:R0=1; 2:R2=0;