Nucleus

diff --git a/task/kthread.c b/task/kthread.c
new file mode 100644
index 0000000..2c91f5a
--- /dev/null
+++ b/task/kthread.c
@@ -0,0 +1,34 @@
+/*
+ * This file implements kernel threads.  Each kernel thread has a stack
+ * allocated in kernel memory and will run a specified function within the
+ * kernel.  When that function completes, the thread will terminate.  The
+ * thread has no resources allocated and should only access the kernel.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <nucleus/lib.h>
+#include <nucleus/task.h>
+
+#define PUSH(s,v) ({ \
+	s -= sizeof(uintptr_t); \
+	*(uintptr_t *) s = (uintptr_t) v; \
+})
+
+/* Create a new kernel thread */
+Task *
+create_kthread(void (*func)(void), enum Priority p)
+{
+	/* Create new task */
+	Task *task = new(&taskType);
+	task->priority = p;
+	task->eip = (uintptr_t) func;
+
+	/* Setup stack to return to terminate() */
+	task->esp = (uintptr_t) task + KERNEL_STACK_SIZE;
+	PUSH(task->esp, terminate);
+
+	/* Schedule the task */
+	enqueue_task(task);
+	return task;
+}