CPU Exception

src/lib.rs

@@ -3,10 +3,12 @@
 #![feature(custom_test_frameworks)]
 #![test_runner(crate::test_runner)]
 #![reexport_test_harness_main = "test_main"]
+#![feature(abi_x86_interrupt)]
 
 use core::panic::PanicInfo;
 pub mod serial;
 pub mod vga_buffer;
+pub mod interrupts;
 
 pub trait Testable {
     fn run(&self) -> ();
@@ -41,6 +43,7 @@ pub fn test_panic_handler(info: &PanicInfo) -> ! {
 #[cfg(test)]
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
+    init();
     test_main();
     loop {}
 }
@@ -51,6 +54,14 @@ fn panic(info: &PanicInfo) -> ! {
     test_panic_handler(info)
 }
 
+#[test_case]
+fn test_breakpoint_exception() {
+    x86_64::instructions::interrupts::int3();
+    // 如果程序继续运行则说明测试成功
+    // 用 cargo test 运行全部测试
+    // 或 cargo test --lib 仅运行库测试
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 #[repr(u32)]
 pub enum QemuExitCode {
@@ -67,3 +78,6 @@ pub fn exit_qemu(exit_code: QemuExitCode) {
     }
 }
 
+pub fn init() {
+    interrupts::init_idt();
+}