AArch64 MP+dmb.sy+pos-ctrl-pos-fri-rfi
"DMB.SYdWW Rfe PosRR DpCtrldR PosRR Fri Rfi Fre"
Cycle=Rfi Fre DMB.SYdWW Rfe PosRR DpCtrldR PosRR Fri
Relax=
Safe=Rfi Rfe Fri Fre PosRR DMB.SYdWW DpCtrldR
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr
Orig=DMB.SYdWW Rfe PosRR DpCtrldR PosRR Fri Rfi Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X4=x;
}
P0 | P1 ;
MOV W0,#2 | LDR W0,[X1] ;
STR W0,[X1] | LDR W2,[X1] ;
DMB SY | CBNZ W2,LC00 ;
MOV W2,#1 | LC00: ;
STR W2,[X3] | LDR W3,[X4] ;
| LDR W5,[X4] ;
| MOV W6,#1 ;
| STR W6,[X4] ;
| LDR W7,[X4] ;
Observed
y=1; x=1; 1:X7=1; 1:X5=2; 1:X3=2; 1:X2=0; 1:X0=1;
and y=1; x=1; 1:X7=1; 1:X5=0; 1:X3=2; 1:X2=0; 1:X0=0;