AArch64 MP+dmb.sy+pos-data-rfi-[fr-rf]-ctrl
"DMB.SYdWW Rfe PosRR DpDatadW Rfi FrLeave RfBack DpCtrldR Fre"
Cycle=Rfi FrLeave RfBack DpCtrldR Fre DMB.SYdWW Rfe PosRR 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 PosRR DpDatadW Rfi FrLeave RfBack DpCtrldR Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X4=z; 1:X8=x;
2:X1=z;
}
P0 | P1 | P2 ;
MOV W0,#1 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | LDR W2,[X1] | STR W0,[X1] ;
DMB SY | EOR W3,W2,W2 | ;
MOV W2,#1 | ADD W3,W3,#1 | ;
STR W2,[X3] | STR W3,[X4] | ;
| LDR W5,[X4] | ;
| LDR W6,[X4] | ;
| CBNZ W6,LC00 | ;
| LC00: | ;
| LDR W7,[X8] | ;
Observed
z=2; y=1; x=1; 1:X7=0; 1:X6=2; 1:X5=2; 1:X2=1; 1:X0=0;