Executions for behaviour:
"1:R0=1 ; 1:R1=0 ; ok=0 ; x=1"
ARM MP+dmb+ctrlra "DMBdWW RfeNaR DpCtrldRRA FreANa" Cycle=RfeNaR DpCtrldRRA FreANa DMBdWW Prefetch=0:x=F,0:y=W,1:y=F,1:x=T Com=Rf Fr Orig=DMBdWW RfeNaR DpCtrldRRA FreANa { ok=1; %x0=x; %y0=y; %y1=y; %x1=x; %ok1=ok; } P0 | P1 ; MOV R0,#1 | LDREX R0,[%y1] ; STR R0,[%x0] | CMP R0,R0 ; DMB | BNE LC00 ; MOV R1,#1 | LC00: ; STR R1,[%y0] | LDREX R1,[%x1] ; | STREX %T2,R1,[%x1] ; | CMP %T2,#0 ; | BNE Fail1 ; | B Exit1 ; | Fail1: ; | MOV R2,#0 ; | STR R2,[%ok1] ; | Exit1: ; Observed 1:R0=1; 1:R1=0; ok=0; x=1;