AArch64 MP+dmb.sy+data-rfi-[fr-rf]-ctrl-pos
"DMB.SYdWW Rfe DpDatadW Rfi FrLeave RfBack DpCtrldR PosRR Fre"
Cycle=Rfi FrLeave RfBack DpCtrldR PosRR Fre DMB.SYdWW Rfe DpDatadW
Relax=
Safe=Rfi Rfe Fre PosRR DMB.SYdWW DpDatadW DpCtrldR [FrLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe DpDatadW Rfi FrLeave RfBack DpCtrldR PosRR Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X3=z; 1:X7=x;
2:X1=z;
}
P0 | P1 | P2 ;
MOV W0,#1 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | EOR W2,W0,W0 | STR W0,[X1] ;
DMB SY | ADD W2,W2,#1 | ;
MOV W2,#1 | STR W2,[X3] | ;
STR W2,[X3] | LDR W4,[X3] | ;
| LDR W5,[X3] | ;
| CBNZ W5,LC00 | ;
| LC00: | ;
| LDR W6,[X7] | ;
| LDR W8,[X7] | ;
Observed
z=2; y=1; x=1; 1:X8=1; 1:X6=0; 1:X5=2; 1:X4=2; 1:X0=1;