rCore/src/lib.rs

#![feature(lang_items)]
#![feature(const_fn)]
#![feature(unique)]
#![no_std]

extern crate rlibc;
extern crate volatile;

mod vga_buffer;

#[no_mangle]
pub extern fn rust_main() {
    // ATTENTION: we have a very small stack and no guard page

    vga_buffer::print_something();

    loop{}
}

#[lang = "eh_personality"] extern fn eh_personality() {}
#[lang = "panic_fmt"] #[no_mangle] pub extern fn panic_fmt() -> ! {loop{}}
Create a new no_std cargo project 2017-04-11 17:02:21 +04:00			`#![feature(lang_items)]`
Create a vga_buffer module 2017-04-12 21:16:04 +04:00			`#![feature(const_fn)]`
Create a Writer struct with a `write_byte` function 2017-04-12 21:20:15 +04:00			`#![feature(unique)]`
Create a new no_std cargo project 2017-04-11 17:02:21 +04:00			`#![no_std]`

Add a dependency on rlibc 2017-04-11 20:25:51 +04:00			`extern crate rlibc;`
Use volatile writes for printing to screen 2017-04-12 21:24:25 +04:00			`extern crate volatile;`
Add a dependency on rlibc 2017-04-11 20:25:51 +04:00
Create a vga_buffer module 2017-04-12 21:16:04 +04:00			`mod vga_buffer;`

Create a new no_std cargo project 2017-04-11 17:02:21 +04:00			`#[no_mangle]`
Add a dependency on rlibc 2017-04-11 20:25:51 +04:00			`pub extern fn rust_main() {`
Print a “Hello World!” in Rust 2017-04-11 21:30:19 +04:00			`// ATTENTION: we have a very small stack and no guard page`

Add a print_something function to print an `H` in the lower left 2017-04-12 21:21:54 +04:00			`vga_buffer::print_something();`
Print a “Hello World!” in Rust 2017-04-11 21:30:19 +04:00
			`loop{}`
Add a dependency on rlibc 2017-04-11 20:25:51 +04:00			`}`
Create a new no_std cargo project 2017-04-11 17:02:21 +04:00
			`#[lang = "eh_personality"] extern fn eh_personality() {}`
			`#[lang = "panic_fmt"] #[no_mangle] pub extern fn panic_fmt() -> ! {loop{}}`