More moving things around and deleting obsolete code

rust_experiments/src/lib.rs

@@ -8,16 +8,36 @@ extern crate std;
 
 extern crate rlibc;
 
-extern {
-    fn asm_printchar() -> u32;
-    fn call_interrupt();
-}
-
+/* externs */
 #[no_mangle]
 pub extern fn rust_setup_PIC() {
     PIC::setup_PIC();
 }
 
+#[no_mangle]
+pub extern fn rust_handle_keyboard(x: u8) {
+    checkerboard(vga_buffer::Color::Green);
+    vga_buffer::print_u32(x as u32, 0);
+}
+
+
+#[no_mangle]
+pub extern fn rust_interrupt_handler() {
+    checkerboard(vga_buffer::Color::White);
+}
+
+static mut global_timer_count: u64 = 0;
+
+#[no_mangle]
+pub extern fn rust_handle_timer() {
+    let gtc = unsafe { global_timer_count };
+    unsafe {
+        global_timer_count += 1;
+    }
+
+    timer_callback(gtc);
+}
+
 mod PIC {
     use x86_asm::{outb, inb, iowait};
 
@@ -84,29 +104,6 @@ mod x86_asm {
     }
 }
 
-#[no_mangle]
-pub extern fn rust_interrupt_handler() {
-    checkerboard(vga_buffer::Color::White);
-}
-
-#[no_mangle]
-pub extern fn rust_handle_keyboard(x: u8) {
-    checkerboard(vga_buffer::Color::Green);
-    vga_buffer::print_u32(x as u32, 0);
-}
-
-static mut global_timer_count: u64 = 0;
-
-#[no_mangle]
-pub extern fn rust_handle_timer() {
-    let gtc = unsafe { global_timer_count };
-    unsafe {
-        global_timer_count += 1;
-    }
-
-    timer_callback(gtc);
-}
-
 fn timer_callback(count: u64) {
     if count % 1000  == 0 {
         checkerboard(vga_buffer::Color::White);

rust_experiments/src/long_mode_init.asm

@@ -1,6 +1,5 @@
 global long_mode_start
 global asm_printchar
-global call_interrupt
 extern rust_interrupt_handler
 extern rust_handle_keyboard
 extern rust_handle_timer
@@ -63,12 +62,6 @@ setup_SSE:
     mov al, "a"
     jmp error
 
-asm_printchar:
-    mov rax, 0xf056
-    mov [0xb8000], ax
-    mov rax, 0x1
-    ret
-
 
 ; ----------- IDT section ---------------------