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Implement print!/println! macros

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This commit is contained in:
Philipp Oppermann
2019-01-25 13:22:33 +01:00
parent c1e3fa57c6
commit c43d6191c5
2 changed files with 18 additions and 9 deletions
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17
src/vga_buffer.rs
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@@ -123,3 +123,20 @@ impl fmt::Write for Writer {
Ok(())
}
}
#[macro_export]
macro_rules! print {
($($arg:tt)*) => ($crate::vga_buffer::_print(format_args!($($arg)*)));
}
#[macro_export]
macro_rules! println {
() => ($crate::print!("\n"));
($($arg:tt)*) => ($crate::print!("{}\n", format_args!($($arg)*)));
}
#[doc(hidden)]
pub fn _print(args: fmt::Arguments) {
use core::fmt::Write;
WRITER.lock().write_fmt(args).unwrap();
}