Test WRR+2W+addraa+dmbnaa

ARM WRR+2W+addraa+dmbnaa
"RfeNaA DpAddrdRAA FreANa DMBdWWNaA WseANa"
Cycle=RfeNaA DpAddrdRAA FreANa DMBdWWNaA WseANa
Prefetch=1:x=F,1:y=T,2:y=F,2:x=W
Com=Rf Fr Ws
Orig=RfeNaA DpAddrdRAA FreANa DMBdWWNaA WseANa
{ ok=1;
%x0=x;
%x1=x; %y1=y; %ok1=ok;
%y2=y; %x2=x; %ok2=ok;
}
 P0           | P1                 | P2                  ;
 MOV R0,#2    | LDREX R0,[%x1]     | MOV R0,#1           ;
 STR R0,[%x0] | STREX %T2,R0,[%x1] | STR R0,[%y2]        ;
              | CMP %T2,#0         | DMB                 ;
              | BNE Fail1          | MOV %T3,#1          ;
              | EOR R1,R0,R0       | LDREX R1,[%x2]      ;
              | ADD %T1,R1,%y1     | STREX %T2,%T3,[%x2] ;
              | LDREX R2,[%T1]     | CMP %T2,#0          ;
              | STREX %T2,R2,[%T1] | BNE Fail2           ;
              | CMP %T2,#0         | B Exit2             ;
              | BNE Fail1          | Fail2:              ;
              | B Exit1            | MOV R2,#0           ;
              | Fail1:             | STR R2,[%ok2]       ;
              | MOV R3,#0          | Exit2:              ;
              | STR R3,[%ok1]      |                     ;
              | Exit1:             |                     ;
Observed
    1:R0=2; 1:R2=0; 2:R1=0; ok=1; x=2; y=1;