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#![no_main]
#![feature(compiler_builtins_lib)]
#![feature(custom_test_frameworks)]
#![feature(abi_x86_interrupt)]
#![feature(panic_info_message)]
#![test_runner(crate::test_runner)]
#![reexport_test_harness_main = "test_main"]
#![no_std]
mod interrupts;
mod io;
use core::fmt::Write;
use io::vga_text::OStream;
use io::{qemu, serial, vga_text};
#[cfg(test)]
pub fn test_runner(tests: &[&dyn Fn(&mut OStream)]) {
let mut stdout = OStream::new();
stdout.clear();
write!(&mut stdout, "running {} tests\n", tests.len()).unwrap();
for test in tests {
test(&mut stdout)
}
}
#[no_mangle]
pub extern "C" fn _start() -> ! {
interrupts::gdt::init();
interrupts::table::init();
if cfg!(test) {
#[cfg(test)]
test_main();
qemu::exit_qemu(qemu::QemuExitCode::Success);
}
x86_64::instructions::interrupts::int3();
let stdout = OStream::new();
stdout.clear();
panic!("panic! at the disco");
/// TODO: write test
///fn _loop(i: u64) -> u64 {
/// if i > 0b1010101001101101 {
/// return i;
/// }
/// let n = i;
/// let mut stdout = OStream::new();
/// write!(&mut stdout, "{:x}", &n as *const u64 as u64).unwrap();
/// _loop(i + 1)
///}
///_loop(0);
/// TODO: write test
///x86_64::instructions::interrupts::int3();
loop {}
}
#[panic_handler]
#[no_mangle]
pub extern "C" fn panic_handler(info: &core::panic::PanicInfo) -> ! {
let mut stderr = OStream::new();
stderr.set_state(vga_text::CharState::from_colors(
vga_text::Color::LightRed,
vga_text::Color::Red,
));
stderr.clear();
stderr.print(b"uff-os");
stderr.set_row(10);
stderr.set_state(vga_text::CharState::from_colors(
vga_text::Color::White,
vga_text::Color::Red,
));
stderr.print_centered(b"<kernel panic>");
stderr.set_row(14);
stderr.set_state(vga_text::CharState::from_colors(
vga_text::Color::Cyan,
vga_text::Color::Red,
));
stderr.set_centered(true);
write!(
&mut stderr,
"{:?}",
info.message()
.unwrap_or(&format_args!("no panic information obtainable"))
);
stderr.set_centered(false);
if cfg!(test) {
write!(serial::SerialStream::new(), "Testing failed\n").unwrap();
qemu::exit_qemu(qemu::QemuExitCode::Failed);
}
loop {}
}
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