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rCore-Tutorial-v3-tests/os/src/main.rs

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940 B

#![no_std]
#![no_main]
#![feature(global_asm)]
#![feature(llvm_asm)]
#![feature(panic_info_message)]
#![feature(const_in_array_repeat_expressions)]
#![feature(alloc_error_handler)]
extern crate alloc;
#[macro_use]
extern crate bitflags;
#[macro_use]
mod console;
mod lang_items;
mod sbi;
mod syscall;
mod trap;
mod config;
mod task;
mod timer;
mod mm;
mod fs;
mod drivers;
global_asm!(include_str!("entry.asm"));
fn clear_bss() {
extern "C" {
fn sbss();
fn ebss();
}
(sbss as usize..ebss as usize).for_each(|a| {
unsafe { (a as *mut u8).write_volatile(0) }
});
}
#[no_mangle]
pub fn rust_main() -> ! {
clear_bss();
println!("[kernel] Hello, world!");
mm::init();
mm::remap_test();
trap::init();
trap::enable_timer_interrupt();
timer::set_next_trigger();
fs::list_apps();
task::add_initproc();
task::run_tasks();
panic!("Unreachable in rust_main!");
}