feat(vga): add vga print macros and increase kernel stack size

Signed-off-by: Julien CLEMENT <julien.clement@epita.fr>

src/boot/boot.asm

@@ -164,7 +164,7 @@ p2_table:
     resb 4096
 
 stack_bottom:
-    resb 64
+    resb 4096
 stack_top:
 
 

src/lib.rs

@@ -1,17 +1,20 @@
 #![no_std]
 #![no_main]
 
+use core::panic::PanicInfo;
+
 #[panic_handler]
-fn panic(_info: &core::panic::PanicInfo) -> ! {
+fn panic_handler(info: &PanicInfo) -> ! {
+    println!("{}", info);
     loop {}
 }
 
-use core::fmt::Write;
 mod vga;
 
 #[no_mangle]
 pub extern "C" fn julios_main() -> ! {
-    vga::WRITER.lock().write_str("Hello").unwrap();
+    println!("Hello World!");
-    write!(vga::WRITER.lock(), " {}!\n{}", "World", "***JuliOS***").unwrap();
+    println!("{}", "***JuliOS***");
+    panic!("Test panick");
     loop {}
 }

src/vga.rs

@@ -1,5 +1,5 @@
 use volatile::Volatile;
-use core::fmt::{self, Write};
+use core::fmt;
 use lazy_static::lazy_static;
 use spin::Mutex;
 
@@ -14,6 +14,24 @@ lazy_static! {
     });
 }
 
+#[macro_export]
+macro_rules! print {
+    ($($arg:tt)*) => ($crate::vga::_print(format_args!($($arg)*)));
+}
+
+#[macro_export]
+macro_rules! println {
+    () => ($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();
+}
+
+
 #[allow(dead_code)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 #[repr(u8)]