PPC WRC+ctrl+addrrr+A
"RfeAP DpCtrldW RfePR DpAddrdRRR FreRA"
Cycle=RfeAP DpCtrldW RfePR DpAddrdRRR FreRA
Prefetch=0:x=T,2:x=T
Com=Rf Rf Fr
Orig=RfeAP DpCtrldW RfePR DpAddrdRRR FreRA
{ ok=1;
0:r2=x; 0:r4=ok;
1:r2=x; 1:r4=y;
2:r2=y; 2:r5=x;
}
P0 | P1 | P2 ;
li r1,1 | lwz r1,0(r2) | lwarx r1,r0,r2 ;
lwarx %sta,r0,r2 | cmpw r1,r1 | xor r3,r1,r1 ;
stwcx. r1,r0,r2 | beq LC00 | lwarx r4,r3,r5 ;
bne Fail0 | LC00: | ;
b Exit0 | li r3,1 | ;
Fail0: | stw r3,0(r4) | ;
li r3,0 | | ;
stw r3,0(r4) | | ;
Exit0: | | ;
exists
(ok=1 /\ 1:r1=1 /\ 2:r1=1 /\ 2:r4=0)