AArch64 MP+dmb.sy+pos-fri-rfi-ctrl-rfi
"DMB.SYdWW Rfe PosRR Fri Rfi DpCtrldW Rfi Fre"
Cycle=Rfi Fre DMB.SYdWW Rfe PosRR Fri Rfi DpCtrldW
Relax=
Safe=Rfi Rfe Fri Fre PosRR DMB.SYdWW DpCtrldW
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr
Orig=DMB.SYdWW Rfe PosRR Fri Rfi DpCtrldW Rfi Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X6=x;
}
P0 | P1 ;
MOV W0,#2 | LDR W0,[X1] ;
STR W0,[X1] | LDR W2,[X1] ;
DMB SY | MOV W3,#2 ;
MOV W2,#1 | STR W3,[X1] ;
STR W2,[X3] | LDR W4,[X1] ;
| CBNZ W4,LC00 ;
| LC00: ;
| MOV W5,#1 ;
| STR W5,[X6] ;
| LDR W7,[X6] ;
Observed
y=2; x=2; 1:X7=1; 1:X4=2; 1:X2=1; 1:X0=1;
and y=2; x=1; 1:X7=1; 1:X4=2; 1:X2=0; 1:X0=1;