AArch64 MP+dmb.sy+pos-fri-rfi-ctrlisb-[fr-rf]
"DMB.SYdWW Rfe PosRR Fri Rfi DpCtrlIsbdR FrLeave RfBack Fre"
Cycle=Rfi DpCtrlIsbdR FrLeave RfBack Fre DMB.SYdWW Rfe PosRR Fri
Relax=
Safe=Rfi Rfe Fri Fre PosRR DMB.SYdWW DpCtrlIsbdR [FrLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe PosRR Fri Rfi DpCtrlIsbdR FrLeave RfBack Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X6=x;
2:X1=x;
}
P0 | P1 | P2 ;
MOV W0,#2 | LDR W0,[X1] | MOV W0,#1 ;
STR W0,[X1] | LDR W2,[X1] | STR W0,[X1] ;
DMB SY | MOV W3,#2 | ;
MOV W2,#1 | STR W3,[X1] | ;
STR W2,[X3] | LDR W4,[X1] | ;
| CBNZ W4,LC00 | ;
| LC00: | ;
| ISB | ;
| LDR W5,[X6] | ;
| LDR W7,[X6] | ;
Observed
y=2; x=2; 1:X7=1; 1:X5=1; 1:X4=2; 1:X2=1; 1:X0=1;
and y=2; x=2; 1:X7=0; 1:X5=0; 1:X4=2; 1:X2=1; 1:X0=1;
and y=2; x=1; 1:X7=0; 1:X5=0; 1:X4=2; 1:X2=1; 1:X0=1;