Compile rust

Write a simple rust function, call it from C

Makefile

@@ -15,10 +15,11 @@ baremetal_gamarjoba: baremetal_gamarjoba.asm include.c
 run_baremetal_gamarjoba: baremetal_gamarjoba
 	qemu-system-i386 -kernel baremetal_gamarjoba
 
-keyboard: keyboard.asm c_keyboard.c
+keyboard: keyboard.asm c_keyboard.c keyboard.rs
 	gcc -m32 -ffreestanding -o c_keyboard.o -c c_keyboard.c
+	rustc --emit obj -o rust_keyboard.o --target i686-unknown-linux-gnu keyboard.rs
 	nasm -f elf32 keyboard.asm
-	ld -m elf_i386 -nostdlib -T linker.ld keyboard.o c_keyboard.o -o keyboard
+	ld -m elf_i386 -nostdlib -T linker.ld keyboard.o c_keyboard.o rust_keyboard.o -o keyboard
 
 run_keyboard: keyboard
 	qemu-system-i386 -kernel keyboard

c_keyboard.c

@@ -1,10 +1,13 @@
 
 extern int write_to_coord(int x, int y, int x86_specifier);
 extern int clear(int x86_specifier);
+extern int rust_get_int();
+void print_int(int, int);
 
 void c_entry() {
     write_to_coord(1,1, (0xf0 << 8) | 'm');
-    print_int(0x73f, 10);
+    int from_rust = rust_get_int();
+    print_int(from_rust, 10);
 }
 
 void print_int(int input, int coord) {

keyboard.rs

@@ -0,0 +1,14 @@
+
+#![feature(lang_items, start, no_core)]
+#![no_core]
+#![no_main]
+
+#[no_mangle]
+pub extern fn rust_get_int() -> i32 {
+    return 16;
+}
+
+#[lang = "eh_personality"] extern fn eh_personality() {}
+#[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
+#[lang = "sized"] trait Sized {}
+#[lang = "copy"] trait Copy {}