initial commit -- framebuffer Hello, World!

kernel/src/main.rs

@@ -0,0 +1,40 @@
+#![no_std] // Don't link the Rust standard library
+#![no_main] // Disable all Rust-level entry points
+
+use core::panic::PanicInfo;
+use limine::*;
+
+use limine::request::{
+    FramebufferRequest, RequestsEndMarker, RequestsStartMarker,
+};
+
+mod font;
+mod render;
+
+use crate::font::FONT;
+
+// Set the base revision
+static BASE_REVISION: BaseRevision = BaseRevision::new();
+
+
+// Halt and catch fire function
+fn hcf() -> ! {
+    loop {
+        unsafe { core::arch::asm!("cli; hlt") }
+    }
+}
+
+// Called on panic
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    hcf()
+}
+
+// Kernel entry point
+#[no_mangle]
+pub extern "C" fn kmain() -> ! {
+    render::init();
+    render::write_string("Welcome to GoofyAhhOS!\nthis is the superior os\nif you disagree you are a heretic in the name of steven.", 0xff0000, 0);
+
+    hcf()
+}