Call argument passing: o0 o1 o2 o3 o4 o5 stack
Return values: o0 o1
Stack pointer: o6
Return address: o7
Frame pointer: i7

Callee-save registers:
    l0 l1 l2 l3 l4 l5 l6 l7
    i0 i1 i2 i3 i4 i5 i6 i7