7 mr. r0,r3 ; move register: r0 := r3; where '.' enables
9 blelr- 0 ; branch to LR if "less than or equal" in CR0
10 ; is set, where '-' predicts the branch will
12 mtctr r0 ; move r0 into CTR
13 li r3,0 ; load immediate: r3 := 0
14 addi r4,r4,-4 ; add immediate: r4 := r4 + (-4)
16 lwzu r0,4(r4) ; load word with update: r0 := mem[r4 + 4];
18 add r3,r3,r0 ; add to sum: r3 := r3 + r0
19 bdnz .loop ; decrement CTR and branch to loop if not zero