ARM WRW+2W+poaas "RfeNaA PodRWAA WseAA PodWWAA WseANa" Cycle=RfeNaA PodRWAA WseAA PodWWAA WseANa Prefetch=1:x=F,1:y=W,2:y=F,2:x=W Com=Rf Ws Ws Orig=RfeNaA PodRWAA WseAA PodWWAA 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 %T3,#2 ; STR R0,[%x0] | STREX %T2,R0,[%x1] | LDREX R0,[%y2] ; | CMP %T2,#0 | STREX %T2,%T3,[%y2] ; | BNE Fail1 | CMP %T2,#0 ; | MOV %T3,#1 | BNE Fail2 ; | LDREX R1,[%y1] | MOV %T3,#1 ; | STREX %T2,%T3,[%y1] | LDREX R1,[%x2] ; | CMP %T2,#0 | STREX %T2,%T3,[%x2] ; | BNE Fail1 | CMP %T2,#0 ; | B Exit1 | BNE Fail2 ; | Fail1: | B Exit2 ; | MOV R2,#0 | Fail2: ; | STR R2,[%ok1] | MOV R2,#0 ; | Exit1: | STR R2,[%ok2] ; | | Exit2: ; Observed 1:R0=2; 1:R1=0; 2:R0=1; 2:R1=0; ok=1; x=2; y=2;