Executions for behaviour:
"1:R1=1 ; 1:R3=0 ; y=1"

ARM DETOUR0857
"DMBdWW Wse Rfi PosRR DpCtrlIsbdR Fre"
Cycle=Rfi PosRR DpCtrlIsbdR Fre DMBdWW Wse
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Ws Fr
Orig=DMBdWW Wse Rfi PosRR DpCtrlIsbdR Fre
{
%x0=x; %y0=y;
%y1=y; %x1=x;
}
P0 | P1 ;
MOV R0,#1 | MOV R0,#2 ;
STR R0,[%x0] | STR R0,[%y1] ;
DMB | LDR R1,[%y1] ;
MOV R1,#1 | LDR R2,[%y1] ;
STR R1,[%y0] | CMP R2,R2 ;
| BNE LC00 ;
| LC00: ;
| ISB ;
| LDR R3,[%x1] ;
Observed
1:R1=1; 1:R3=0; y=1;