Executions for behaviour:
"1:R0=1 ; 1:R1=1 ; 1:R3=2 ; 1:R4=0 ; y=2"
ARM MP+dmb+pos-fri-rfi-ctrlisb+REAL "DMBdWW Rfe PosRR Fri Rfi DpCtrlIsbdR Fre" Prefetch=0:x=F,0:y=W,1:y=F,1:x=T Com=Rf Fr Orig=DMBdWW Rfe PosRR Fri Rfi DpCtrlIsbdR Fre { %x0=x; %y0=y; %y1=y; %x1=x; 1:R4=-1; } P0 | P1 ; MOV R0,#1 | LDR R0,[%y1] ; STR R0,[%x0] | LDR R1,[%y1] ; DMB | MOV R2,#2 ; MOV R1,#1 | STR R2,[%y1] ; STR R1,[%y0] | LDR R3,[%y1] ; | CMP R3,#2 ; | BNE LC00 ; | ISB ; | LDR R4,[%x1] ; | LC00: ; Observed 1:R0=1; 1:R1=1; 1:R3=2; 1:R4=0; y=2;