Executions for behaviour:
"1:r1=1 ; 2:r3=0 ; ok=1 ; y=2"
PPC WRW+WR+pora+syncaa+A
"RfeAR PodRWRA WseAA SyncdWRAA FreAA"
Cycle=RfeAR PodRWRA WseAA SyncdWRAA FreAA
Prefetch=0:x=T,1:y=W,2:y=F,2:x=T
Com=Rf Ws Fr
Orig=RfeAR PodRWRA WseAA SyncdWRAA FreAA
{ ok=1;
0:r2=x; 0:r4=ok;
1:r2=x; 1:r4=y; 1:r6=ok;
2:r2=y; 2:r4=x; 2:r6=ok;
}
P0 | P1 | P2 ;
li r1,1 | lwarx r1,r0,r2 | li r1,2 ;
lwarx %sta,r0,r2 | li r3,1 | lwarx %sta,r0,r2 ;
stwcx. r1,r0,r2 | lwarx %sta,r0,r4 | stwcx. r1,r0,r2 ;
bne Fail0 | stwcx. r3,r0,r4 | bne Fail2 ;
b Exit0 | bne Fail1 | sync ;
Fail0: | b Exit1 | lwarx r3,r0,r4 ;
li r3,0 | Fail1: | stwcx. r3,r0,r4 ;
stw r3,0(r4) | li r5,0 | bne Fail2 ;
Exit0: | stw r5,0(r6) | b Exit2 ;
| Exit1: | Fail2: ;
| | li r5,0 ;
| | stw r5,0(r6) ;
| | Exit2: ;
Observed
1:r1=1; 2:r3=0; ok=1; y=2;