110 lines
2.3 KiB
Rust
110 lines
2.3 KiB
Rust
#![no_std]
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#![cfg_attr(test, no_main)]
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#![feature(custom_test_frameworks)]
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#![feature(abi_x86_interrupt)]
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#![feature(alloc_error_handler)]
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#![feature(const_mut_refs)]
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#![test_runner(crate::test_runner)]
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#![reexport_test_harness_main = "test_main"]
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extern crate alloc;
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use core::panic::PanicInfo;
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pub mod allocator;
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pub mod gdt;
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pub mod interrupts;
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pub mod memory;
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pub mod serial;
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pub mod vga_buffer;
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pub trait Testable {
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fn run(&self) -> ();
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}
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impl<T> Testable for T
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where
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T: Fn(),
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{
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fn run(&self) {
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serial_print!("{}...\t", core::any::type_name::<T>()); // 打印函数名
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self(); // 执行这个函数。由于 T 具有 Fn() trait 所以它能够作为一个函数被直接调用
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serial_println!("[ok]"); // 打印 "[ok]"
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}
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}
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pub fn test_runner(tests: &[&dyn Testable]) {
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serial_println!("Running {} tests", tests.len());
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for test in tests {
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test.run();
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}
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exit_qemu(QemuExitCode::Success);
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}
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pub fn test_panic_handler(info: &PanicInfo) -> ! {
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serial_println!("[failed]\n");
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serial_println!("Error: {}\n", info);
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exit_qemu(QemuExitCode::Failed);
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hlt_loop();
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}
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#[cfg(test)]
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use bootloader::{entry_point, BootInfo};
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#[cfg(test)]
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entry_point!(test_kernel_main);
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#[cfg(test)]
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fn test_kernel_main(_boot_info: &'static BootInfo) -> ! {
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init();
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test_main();
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hlt_loop();
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}
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#[cfg(test)]
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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test_panic_handler(info)
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}
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#[test_case]
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fn test_breakpoint_exception() {
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x86_64::instructions::interrupts::int3();
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// 如果程序继续运行则说明测试成功
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// 用 cargo test 运行全部测试
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// 或 cargo test --lib 仅运行库测试
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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#[repr(u32)]
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pub enum QemuExitCode {
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Success = 0x10,
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Failed = 0x11,
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}
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pub fn exit_qemu(exit_code: QemuExitCode) {
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use x86_64::instructions::port::Port;
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unsafe {
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let mut port = Port::new(0xf4); // iobase port
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port.write(exit_code as u32);
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}
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}
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pub fn hlt_loop() -> ! {
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loop {
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x86_64::instructions::hlt();
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}
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}
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#[alloc_error_handler]
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fn alloc_error_handler(layout: alloc::alloc::Layout) -> ! {
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panic!("allocation error: {:?}", layout);
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}
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pub fn init() {
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gdt::init();
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interrupts::init_idt();
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unsafe { interrupts::PICS.lock().initialize() };
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x86_64::instructions::interrupts::enable();
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}
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