68 lines
No EOL
1.3 KiB
Rust
68 lines
No EOL
1.3 KiB
Rust
#![no_std]
|
|
#![no_main]
|
|
|
|
mod lang_items;
|
|
mod sbi;
|
|
mod logger;
|
|
|
|
#[macro_use]
|
|
mod console;
|
|
|
|
mod batch;
|
|
mod sync;
|
|
|
|
use core::arch::global_asm;
|
|
use log::{debug, error, info, trace, warn};
|
|
|
|
global_asm!(include_str!("entry.asm"));
|
|
|
|
#[no_mangle]
|
|
pub fn rust_main() -> ! {
|
|
clear_bss();
|
|
logger::init();
|
|
|
|
print_system_info();
|
|
print_to_console();
|
|
|
|
panic!("Shutdown machine!");
|
|
}
|
|
|
|
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) }
|
|
});
|
|
}
|
|
|
|
fn print_to_console() {
|
|
sbi::console_write_byte('O' as u8);
|
|
sbi::console_write_byte('K' as u8);
|
|
sbi::console_write_byte('\n' as u8);
|
|
|
|
trace!("Hello World.");
|
|
debug!("Hello World.");
|
|
info!("Hello World.");
|
|
warn!("Hello World.");
|
|
error!("Hello World.");
|
|
}
|
|
|
|
fn print_system_info() {
|
|
extern "C" {
|
|
fn stext();
|
|
fn etext();
|
|
fn sdata();
|
|
fn edata();
|
|
fn srodata();
|
|
fn erodata();
|
|
fn sbss();
|
|
fn ebss();
|
|
}
|
|
|
|
info!(".text [{:#x}, {:#x}]", stext as usize, etext as usize);
|
|
info!(".rodata [{:#x}, {:#x}]", srodata as usize, erodata as usize);
|
|
info!(".data [{:#x}, {:#x}]", sdata as usize, edata as usize);
|
|
info!(".bss [{:#x}, {:#x}]", sbss as usize, ebss as usize);
|
|
} |