AArch64 MP+dmb.sy+fri-rfi-data-[ws-rf]-ctrlisb
"DMB.SYdWW Rfe Fri Rfi DpDatadW WsLeave RfBack DpCtrlIsbdR Fre"
Cycle=Rfi DpDatadW WsLeave RfBack DpCtrlIsbdR Fre DMB.SYdWW Rfe Fri
Relax=
Safe=Rfi Rfe Fri Fre DMB.SYdWW DpDatadW DpCtrlIsbdR [WsLeave,RfBack]
Prefetch=0:x=F,0:y=W,1:y=F,1:x=T
Com=Rf Fr Rf
Orig=DMB.SYdWW Rfe Fri Rfi DpDatadW WsLeave RfBack DpCtrlIsbdR Fre
{
0:X1=x; 0:X3=y;
1:X1=y; 1:X5=z; 1:X8=x;
2:X1=z;
}
P0 | P1 | P2 ;
MOV W0,#1 | LDR W0,[X1] | MOV W0,#2 ;
STR W0,[X1] | MOV W2,#2 | STR W0,[X1] ;
DMB SY | STR W2,[X1] | ;
MOV W2,#1 | LDR W3,[X1] | ;
STR W2,[X3] | EOR W4,W3,W3 | ;
| ADD W4,W4,#1 | ;
| STR W4,[X5] | ;
| LDR W6,[X5] | ;
| CBNZ W6,LC00 | ;
| LC00: | ;
| ISB | ;
| LDR W7,[X8] | ;
Observed
z=2; y=2; x=1; 1:X7=0; 1:X6=2; 1:X3=2; 1:X0=1;
and z=2; y=2; x=1; 1:X7=0; 1:X6=1; 1:X3=2; 1:X0=1;
and z=1; y=2; x=1; 1:X7=0; 1:X6=1; 1:X3=2; 1:X0=1;