121 lines
2.5 KiB
Rust
121 lines
2.5 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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#![test_runner(crate::test_runner)]
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#![reexport_test_harness_main = "test_main"]
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#![feature(abi_x86_interrupt)]
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#![feature(llvm_asm)]
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#![feature(alloc_error_handler)]
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extern crate alloc;
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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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use core::panic::PanicInfo;
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use linked_list_allocator::LockedHeap;
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use polling_serial::serial_println;
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use vga_buffer::println;
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use x86_64::instructions::bochs_breakpoint;
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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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#[global_allocator]
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static ALLOCATOR: LockedHeap = LockedHeap::empty();
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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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// Custom panic handler, required for freestanding program
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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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}
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// Assumes isa-debug-device at 0xf4, of size 4
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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);
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port.write(exit_code as u32);
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}
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loop {
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bochs_breakpoint();
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}
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}
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pub fn test_runner(tests: &[&dyn Fn()]) {
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println!("Running {} tests", tests.len());
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serial_println!("Running {} tests", tests.len());
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for test in tests {
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test();
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}
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exit_qemu(QemuExitCode::Success);
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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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}
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pub fn hlt_loop() -> ! {
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loop {
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bochs_breakpoint();
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x86_64::instructions::hlt();
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}
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}
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#[cfg(test)]
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use vga_buffer::print;
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#[cfg(test)]
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use polling_serial::serial_print;
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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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/// Entry point for `cargo xtest`
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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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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 trivial_assertion() {
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print!("trivial assertion... ");
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serial_print!("trivial assertion... ");
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assert_eq!(1, 1);
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println!("[ok]");
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serial_println!("[ok]");
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}
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#[test_case]
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fn printf_test() {
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serial_print!("Testing VGA print/println... ");
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println!("Are frogs blue?");
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println!("Yes");
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serial_println!("[ok]");
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}
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