ARM ISA2+dsb.st+addr+dmb.st
"DSB.STdWW Rfe DpAddrdW Rfe DMB.STdRR Fre"
Cycle=Rfe DMB.STdRR Fre DSB.STdWW Rfe DpAddrdW
Prefetch=0:x=F,0:y=W,1:y=F,1:z=W,2:z=F,2:x=T
Com=Rf Rf Fr
Orig=DSB.STdWW Rfe DpAddrdW Rfe DMB.STdRR Fre
{
%x0=x; %y0=y;
%y1=y; %z1=z;
%z2=z; %x2=x;
}
P0 | P1 | P2 ;
MOV R0,#1 | LDR R0,[%y1] | LDR R0,[%z2] ;
STR R0,[%x0] | EOR R1,R0,R0 | DMB ST ;
DSB ST | MOV R2,#1 | LDR R1,[%x2] ;
MOV R1,#1 | STR R2,[R1,%z1] | ;
STR R1,[%y0] | | ;
Observed
1:R0=1; 2:R0=1; 2:R1=0;