nac3/runkernel/src/main.rs

#![deny(
    future_incompatible,
    let_underscore,
    nonstandard_style,
    rust_2024_compatibility,
    clippy::all
)]
#![warn(clippy::pedantic)]
#![allow(clippy::semicolon_if_nothing_returned, clippy::uninlined_format_args)]

use std::env;

static mut NOW: i64 = 0;

#[no_mangle]
pub extern "C" fn now_mu() -> i64 {
    unsafe { NOW }
}

#[no_mangle]
pub extern "C" fn at_mu(t: i64) {
    unsafe { NOW = t }
}

#[no_mangle]
pub extern "C" fn delay_mu(dt: i64) {
    unsafe { NOW += dt }
}

#[no_mangle]
pub extern "C" fn rtio_init() {
    println!("rtio_init");
}

#[no_mangle]
pub extern "C" fn rtio_get_counter() -> i64 {
    0
}

#[no_mangle]
pub extern "C" fn rtio_output(target: i32, data: i32) {
    println!("rtio_output @{} target={target:04x} data={data}", unsafe { NOW });
}

#[no_mangle]
pub extern "C" fn print_int32(x: i32) {
    println!("print_int32: {x}");
}

#[no_mangle]
pub extern "C" fn print_int64(x: i64) {
    println!("print_int64: {x}");
}

#[no_mangle]
pub extern "C" fn __nac3_personality(_state: u32, _exception_object: u32, _context: u32) -> u32 {
    unimplemented!();
}

fn main() {
    let filename = env::args().nth(1).unwrap();
    unsafe {
        let lib = libloading::Library::new(filename).unwrap();
        let func: libloading::Symbol<unsafe extern "C" fn()> = lib.get(b"__modinit__").unwrap();
        func();
    }
}