55 lines
1.3 KiB
Rust
55 lines
1.3 KiB
Rust
#![cfg(test)]
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use core::panic::PanicInfo;
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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serial_println!("[failed]\n");
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serial_println!("Error: {}", info);
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exit_qemu(QemuExitCode::Failed);
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loop {}
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}
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/// This function is hooked up to the #![test_runner] attribute made possible by the
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/// https://doc.rust-lang.org/unstable-book/language-features/custom-test-frameworks.html unstable
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/// feature. cf. https://os.phil-opp.com/testing/
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pub fn test_runner(tests: &[&dyn TestFunction]) {
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serial_println!("Running {} test(s)", 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 trait TestFunction {
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fn run(&self) -> ();
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}
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impl<T> TestFunction 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>());
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self();
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serial_println!("[ok]");
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}
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}
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/// Exits qemu by writing to a special qemu emulated port.
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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); // isa-debug-exit port, see Cargo.toml
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port.write(exit_code as u32);
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}
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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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