local funcbc = require('jit.util').funcbc

function opcode(id, name, a, b, c, metamethod)
    return {
        id=id,
        name=name,
        a=a,
        b=b,
        c=c,
        methametod=metamethod,
    }
end

function gen_opcodes(tbl)
    length = #tbl
    res = {}
    for i=1,length do
        res[i] = i+1
    end
    return res
end

Mode = {
    none = 0,
    dst = 1,
    base = 2,
    var = 3,,
    rbase = 4,
    uv = 5,
    lit = 6,
    lits = 7,
    pri = 8,
    num = 9,
    str = 10,
    tab = 11,
    func = 12,
    jump = 13,
    cdata = 14,
    max = 15,
    none = 15, -- same as max
}

Metamethod = {
    index = 0,
    newindex = 1,
    gc = 2,
    mode = 3,
    eq = 4,
    len = 5,
    lt = 6,
    le = 7,
    concat = 8,
    call = 9,
    add = 10,
    sub = 11,
    mul = 12,
    div = 13,
    mod = 14,
    pow = 15,
    unm = 16,
    metatable = 17,
    tostring = 18,
}

Opcodes = gen_opcodes {
    opcode(37, 'POW', Mode.dst, Mode.none, Mode.lits, Metamethod.none),
    opcode(41, 'KSHORT', Mode.dst, Mode.var, Mode.var, Metamethod.pow),
}

print(Opcodes[1])
ins, m = funcbc(test1, 3) -- TODO: what is m?
print(ins)
print(m)