PPC WRC+addrpa+ctrlra
"Rfe DpAddrdWPA RfeAR DpCtrldRRA FreAP"
Cycle=RfeAR DpCtrldRRA FreAP Rfe DpAddrdWPA
Prefetch=0:x=T,2:x=T
Com=Rf Rf Fr
Orig=Rfe DpAddrdWPA RfeAR DpCtrldRRA FreAP
{ ok=1;
0:r2=x;
1:r2=x; 1:r5=y; 1:r7=ok;
2:r2=y; 2:r4=x; 2:r6=ok;
}
P0 | P1 | P2 ;
li r1,1 | lwz r1,0(r2) | lwarx r1,r0,r2 ;
stw r1,0(r2) | xor r3,r1,r1 | cmpw r1,r1 ;
| li r4,1 | beq LC00 ;
| lwarx %sta,r3,r5 | LC00: ;
| stwcx. r4,r3,r5 | lwarx r3,r0,r4 ;
| bne Fail1 | stwcx. r3,r0,r4 ;
| b Exit1 | bne Fail2 ;
| Fail1: | b Exit2 ;
| li r6,0 | Fail2: ;
| stw r6,0(r7) | li r5,0 ;
| Exit1: | stw r5,0(r6) ;
| | Exit2: ;
exists
(ok=1 /\ 1:r1=1 /\ 2:r1=1 /\ 2:r3=0)