Hello world!

kernel/kmain.c

@@ -0,0 +1,40 @@
+#include <limine.h>
+#include <types.h>
+
+__attribute__((used, section(".limine_requests")))
+static volatile LIMINE_BASE_REVISION(3);
+
+__attribute__((used, section(".limine_requests")))
+static volatile struct limine_framebuffer_request framebuffer_request = {
+    .id = LIMINE_FRAMEBUFFER_REQUEST,
+    .revision = 0
+};
+
+__attribute__((used, section(".limine_requests_start")))
+static volatile LIMINE_REQUESTS_START_MARKER;
+
+__attribute__((used, section(".limine_requests_end")))
+static volatile LIMINE_REQUESTS_END_MARKER;
+
+// Halt and catch fire function.
+static void hcf(void) {
+    for (;;) {
+        asm ("hlt");
+    }
+}
+
+void kmain(void) {
+    if (LIMINE_BASE_REVISION_SUPPORTED == false) {
+        hcf();
+    }
+
+    if (framebuffer_request.response == NULL
+     || framebuffer_request.response->framebuffer_count < 1) {
+        hcf();
+    }
+
+    struct limine_framebuffer *framebuffer = framebuffer_request.response->framebuffers[0];
+
+
+    hcf();
+}