Test n2l2

PPC n2l2  (PPCNTwoLwSyncTwo)
"2 independant b3 tests"
{
P0:r4=x ; P0:r5=y ;
P1:r4=x ; P1:r5=y ;
P2:r4=x ; P2:r5=y ;
P3:r4=x ; P3:r5=y ;
P2:r1=2 ;
P3:r1=1 ;
}

P0           |P1           |P2           |P3           ;
lwz r1,0(r4) |lwz r1,0(r4) |stw r1,0(r5) |stw r1,0(r5) ;
xor r9,r1,r1 |xor r9,r1,r1 |lwsync       |lwsync       ;
lwzx r2,r9,r5 |lwzx r2,r9,r5 |stw r1,0(r4) |stw r1,0(r4) ;
locations [0:r1; 0:r2; 1:r1; 1:r2;]
exists
((0:r1=1 /\ 0:r2=0) \/
 (0:r1=2 /\ 0:r2=0) \/
 (1:r1=2 /\ 1:r2=0) \/
 (1:r1=1 /\ 1:r2=0))