PPC LB+ctrlisyncpa+isyncrp
"DpCtrlIsyncdWPA RfeAR ISyncdRWRP Rfe"
Cycle=RfeAR ISyncdRWRP Rfe DpCtrlIsyncdWPA
Prefetch=
Com=Rf Rf
Orig=DpCtrlIsyncdWPA RfeAR ISyncdRWRP Rfe
{ ok=1;
0:r2=x; 0:r4=y; 0:r6=ok;
1:r2=y; 1:r4=x;
}
P0 | P1 ;
lwz r1,0(r2) | lwarx r1,r0,r2 ;
cmpw r1,r1 | isync ;
beq LC00 | li r3,1 ;
LC00: | stw r3,0(r4) ;
isync | ;
li r3,1 | ;
lwarx %sta,r0,r4 | ;
stwcx. r3,r0,r4 | ;
bne Fail0 | ;
b Exit0 | ;
Fail0: | ;
li r5,0 | ;
stw r5,0(r6) | ;
Exit0: | ;
exists
(ok=1 /\ 0:r1=1 /\ 1:r1=1)