mhi_state_end
#undef mhi_state_end
#define mhi_state_end(a, b) case MHI_STATE_##a: return b;
#undef mhi_state_end
#define mhi_state_end(a, b) TRACE_DEFINE_ENUM(MHI_STATE_##a);
#undef mhi_state_end
#define mhi_state_end(a, b) { MHI_STATE_##a, b }