Looks like this:

```rust
extern "Rust" {
    static __drivers_start: &'static dyn Driver;
    static __drivers_end: &'static dyn Driver;
}


macro_rules! driver {
    ( $name:ident ) => {
        #[allow(non_snake_case)]
        mod $name {
            #[used]
            #[link_section = ".drivers"]
            pub static DRIVER: &'static dyn $crate::drivers::Driver = &super::$name;
        }
    };
}

fn get_drivers(bus_type: BusType) -> impl Iterator<Item = &'static dyn Driver> {
    let drivers = unsafe {
        core::slice::from_raw_parts(
            &__drivers_start as *const &'static dyn Driver,
            (&__drivers_end as *const &'static dyn Driver)
                .offset_from(&__drivers_start as *const &'static dyn Driver)
                .try_into()
                .unwrap(),
        )
    };

    drivers
        .into_iter()
        .filter(move |d| d.driver_data().bus_type == bus_type)
        .map(|&d| d)
}