initial commit

tests/basic_boot.rs

@@ -0,0 +1,24 @@
+#![no_std]
+#![no_main]
+#![feature(custom_test_frameworks)]
+#![test_runner(rustos::test_runner)]
+#![reexport_test_harness_main = "test_main"]
+
+use core::panic::PanicInfo;
+use rustos::println;
+
+#[unsafe(no_mangle)]
+pub extern "C" fn _start() -> ! {
+  test_main();
+  loop {}
+}
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+  rustos::test_panic_handler(info)
+}
+
+#[test_case]
+fn test_println() {
+  println!("test_println output");
+}

tests/should_panic.rs

@@ -0,0 +1,25 @@
+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+use rustos::{QemuExitCode, exit_qemu, serial_print, serial_println};
+
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+  serial_println!("[ok]");
+  exit_qemu(QemuExitCode::Success);
+  loop {}
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn _start() -> ! {
+  should_fail();
+  serial_println!("[test did not panic]");
+  exit_qemu(QemuExitCode::Failed);
+  loop {}
+}
+
+fn should_fail() {
+  serial_print!("should_panic::should_fail...\t");
+  assert_eq!(0, 1);
+}

tests/stack_overflow.rs

@@ -0,0 +1,55 @@
+#![no_std]
+#![no_main]
+#![feature(abi_x86_interrupt)]
+
+use core::panic::PanicInfo;
+use lazy_static::lazy_static;
+use rustos::{exit_qemu, serial_print, serial_println, QemuExitCode};
+use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
+
+lazy_static! {
+    static ref TEST_IDT: InterruptDescriptorTable = {
+        let mut idt = InterruptDescriptorTable::new();
+        unsafe {
+            idt.double_fault
+                .set_handler_fn(test_double_fault_handler)
+                .set_stack_index(rustos::gdt::DOUBLE_FAULT_IST_INDEX);
+        }
+        idt
+    };
+}
+
+#[unsafe(no_mangle)]
+pub extern "C" fn _start() -> ! {
+    serial_print!("stack_overflow::stack_overflow...\t");
+
+    rustos::gdt::init();
+    init_test_idt();
+    stack_overflow();
+
+    panic!("Execution continued after stack overflow");
+}
+
+pub fn init_test_idt() {
+    TEST_IDT.load();
+}
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    rustos::test_panic_handler(info)
+}
+
+#[allow(unconditional_recursion)]
+fn stack_overflow() {
+    stack_overflow();
+    volatile::Volatile::new(0).read(); // prevent optimizations
+}
+
+extern "x86-interrupt" fn test_double_fault_handler(
+    _stack_frame: InterruptStackFrame,
+    _error_code: u64,
+) -> ! {
+    serial_println!("[ok]");
+    exit_qemu(QemuExitCode::Success);
+    loop {}
+}