def is_maple_invoke_dync_bp_plt_disabled(buf):
    """
        determine where Maple breakpoint plt disable or not

        params:
          buf: a string output of m_util.gdb_exec_to_str("info b")
    """
    match_pattern = "<maple::InvokeInterpretMethod(maple::DynMFunction&)@plt>"
    buf = buf.split('\n')
    for line in buf:
        if match_pattern in line:
            on_off = line.split()[1]
            if on_off is 'y': # it is enabled
                return False
            else:
                return True
    return True