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#![no_std]
#![cfg_attr(test, no_main)]
#![feature(alloc_error_handler)]
#![feature(alloc_layout_extra)]
#![feature(const_fn)]
#![feature(const_in_array_repeat_expressions)]
#![feature(custom_test_frameworks)]
#![feature(abi_x86_interrupt)]
#![feature(wake_trait)]
#![test_runner(crate::test_runner)]
#![reexport_test_harness_main = "test_main"]
extern crate bootloader;
extern crate lazy_static;
extern crate spin;
extern crate x86_64;
mod allocator;
mod gdt;
mod interrupts;
pub mod memory;
pub mod serial;
pub mod task;
pub mod vga;
use core::panic::PanicInfo;
pub use allocator::HEAP_SIZE;
pub use allocator::HEAP_START;
pub fn init() {
gdt::init();
interrupts::init();
}
pub fn hlt_loop() -> ! {
loop {
x86_64::instructions::hlt();
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum QemuExitCode {
Success = 0x10,
Failed = 0x11,
}
pub fn exit_qemu(exit_code: QemuExitCode) {
use x86_64::instructions::port::Port;
unsafe {
let mut port = Port::new(0xf4);
port.write(exit_code as u32);
}
}
#[cfg(test)]
use bootloader::{entry_point, BootInfo};
#[cfg(test)]
entry_point!(test_kernel);
#[cfg(test)]
fn test_kernel(boot_info: &'static BootInfo) -> ! {
init();
memory::init(boot_info);
test_main();
hlt_loop();
}
pub fn test_runner(tests: &[&dyn Fn()]) {
serial_println!("Running {} tests", tests.len());
for test in tests {
test();
}
exit_qemu(QemuExitCode::Success);
}
pub fn test_panic_handler(info: &PanicInfo) -> ! {
serial_println!("[failed]\n");
serial_println!("Error: {}", info);
exit_qemu(QemuExitCode::Failed);
hlt_loop();
}
#[cfg(test)]
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
test_panic_handler(info)
}