Implement code for integration test post

Cargo.toml

@@ -6,6 +6,8 @@ version = "0.2.0"
 [dependencies]
 spin = "0.4.6"
 volatile = "0.2.3"
+uart_16550 = "0.1.0"
+x86_64 = "0.2.0"
 
 [dependencies.lazy_static]
 version = "1.0"

src/bin/test-basic-boot.rs

@@ -0,0 +1,37 @@
+#![feature(panic_implementation)] // required for defining the panic handler
+#![feature(const_fn)]
+#![no_std] // don't link the Rust standard library
+#![cfg_attr(not(test), no_main)] // disable all Rust-level entry points
+
+// add the library as dependency (same crate name as executable)
+#[macro_use]
+extern crate blog_os;
+
+#[cfg(not(test))]
+use core::panic::PanicInfo;
+use blog_os::exit_qemu;
+
+/// This function is the entry point, since the linker looks for a function
+/// named `_start_` by default.
+#[cfg(not(test))]
+#[no_mangle] // don't mangle the name of this function
+pub extern "C" fn _start() -> ! {
+    serial_println!("ok");
+
+    unsafe { exit_qemu(); }
+    loop {}
+}
+
+
+/// This function is called on panic.
+#[cfg(not(test))]
+#[panic_implementation]
+#[no_mangle]
+pub fn panic(info: &PanicInfo) -> ! {
+    serial_println!("failed");
+
+    serial_println!("{}", info);
+
+    unsafe { exit_qemu(); }
+    loop {}
+}

src/bin/test-panic.rs

@@ -0,0 +1,27 @@
+#![feature(panic_implementation)]
+#![feature(const_fn)]
+#![no_std]
+#![cfg_attr(not(test), no_main)]
+
+#[macro_use]
+extern crate blog_os;
+
+#[cfg(not(test))]
+use core::panic::PanicInfo;
+use blog_os::exit_qemu;
+
+#[cfg(not(test))]
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+    panic!();
+}
+
+#[cfg(not(test))]
+#[panic_implementation]
+#[no_mangle]
+pub fn panic(_info: &PanicInfo) -> ! {
+    serial_println!("ok");
+
+    unsafe { exit_qemu(); }
+    loop {}
+}

src/lib.rs

@@ -0,0 +1,24 @@
+#![feature(const_fn)]
+#![no_std] // don't link the Rust standard library
+
+extern crate spin;
+extern crate volatile;
+#[macro_use]
+extern crate lazy_static;
+extern crate uart_16550;
+extern crate x86_64;
+
+#[cfg(test)]
+extern crate array_init;
+#[cfg(test)]
+extern crate std;
+
+pub mod vga_buffer;
+pub mod serial;
+
+pub unsafe fn exit_qemu() {
+    use x86_64::instructions::port::Port;
+
+    let mut port = Port::<u32>::new(0xf4);
+    port.write(0);
+}

src/main.rs

@@ -3,22 +3,12 @@
 #![cfg_attr(not(test), no_main)] // disable all Rust-level entry points
 #![cfg_attr(test, allow(dead_code, unused_macros))] // allow unused code in test mode
 
-extern crate spin;
-extern crate volatile;
 #[macro_use]
-extern crate lazy_static;
-
-#[cfg(test)]
-extern crate array_init;
-#[cfg(test)]
-extern crate std;
+extern crate blog_os;
 
 #[cfg(not(test))]
 use core::panic::PanicInfo;
 
-#[macro_use]
-mod vga_buffer;
-
 /// This function is the entry point, since the linker looks for a function
 /// named `_start_` by default.
 #[cfg(not(test))]
@@ -36,4 +26,4 @@ pub extern "C" fn _start() -> ! {
 pub fn panic(info: &PanicInfo) -> ! {
     println!("{}", info);
     loop {}
-}
+}

src/serial.rs

@@ -0,0 +1,31 @@
+use uart_16550::SerialPort;
+use spin::Mutex;
+
+lazy_static! {
+    pub static ref SERIAL1: Mutex<SerialPort> = {
+        let mut serial_port = SerialPort::new(0x3F8);
+        serial_port.init();
+        Mutex::new(serial_port)
+    };
+}
+
+pub fn print(args: ::core::fmt::Arguments) {
+    use core::fmt::Write;
+    SERIAL1.lock().write_fmt(args).expect("Printing to serial failed");
+}
+
+/// Prints to the host through the serial interface.
+#[macro_export]
+macro_rules! serial_print {
+    ($($arg:tt)*) => {
+        $crate::serial::print(format_args!($($arg)*));
+    };
+}
+
+/// Prints to the host through the serial interface, appending a newline.
+#[macro_export]
+macro_rules! serial_println {
+    () => (serial_print!("\n"));
+    ($fmt:expr) => (serial_print!(concat!($fmt, "\n")));
+    ($fmt:expr, $($arg:tt)*) => (serial_print!(concat!($fmt, "\n"), $($arg)*));
+}

src/vga_buffer.rs

@@ -148,11 +148,13 @@ impl fmt::Write for Writer {
 }
 
 /// Like the `print!` macro in the standard library, but prints to the VGA text buffer.
+#[macro_export]
 macro_rules! print {
     ($($arg:tt)*) => ($crate::vga_buffer::print(format_args!($($arg)*)));
 }
 
 /// Like the `print!` macro in the standard library, but prints to the VGA text buffer.
+#[macro_export]
 macro_rules! println {
     () => (print!("\n"));
     ($fmt:expr) => (print!(concat!($fmt, "\n")));