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33 lines
781 B
Rust
33 lines
781 B
Rust
use core::fmt;
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pub struct Console;
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impl fmt::Write for Console {
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fn write_str(&mut self, s: &str) -> Result<(), fmt::Error> {
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extern { fn putchar(c: i32) -> i32; }
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for c in s.bytes() { unsafe { putchar(c as i32); } }
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Ok(())
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}
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}
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#[macro_export]
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macro_rules! print {
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($($arg:tt)*) => ({
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use core::fmt::Write;
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write!($crate::uart_console::Console, $($arg)*).unwrap()
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})
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}
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#[macro_export]
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macro_rules! println {
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($fmt:expr) => (print!(concat!($fmt, "\n")));
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($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
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}
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#[no_mangle]
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#[lang = "panic_fmt"]
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pub extern fn panic_fmt(args: fmt::Arguments, file: &'static str, line: u32) -> ! {
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println!("panic at {}:{}: {}", file, line, args);
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loop {}
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}
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