wip: scheduler needs to change eip or smth in order to call the fn

src/multitasking/task.c

@@ -0,0 +1,45 @@
+#include "task.h"
+#include "alloc.h"
+#include "kpanic.h"
+#include "memory.h"
+
+static void set_eip(void (*fn)(void), struct task *task)
+{
+	// TODO or not TODO
+}
+
+static struct task *create_task(uint8_t owner_id)
+{
+	static uint32_t pid = 1;
+	struct task *new_task = vmalloc(sizeof(struct task));
+	if (!new_task)
+		return NULL;
+	new_task->owner_id = owner_id;
+	new_task->pid = pid++;
+	new_task->heap = alloc_pages(4096, (void **)&new_task->cr3);
+	if (!new_task->heap) {
+		vfree(new_task);
+		return NULL;
+	}
+	return new_task;
+}
+
+void exec_fn(void (*fn)(void))
+{
+	struct task *new_task = create_task(OWNER_KERNEL);
+	if (!new_task)
+		kpanic("failed to create new task");
+	new_task->status = RUN;
+	new_task->next = current_task;
+	new_task->prev = current_task->prev;
+	current_task->prev = new_task;
+	current_task = new_task;
+	set_eip(fn, new_task);
+}
+
+/*
+ * Create task
+ * Allocate new pd => kmalloc(4096)
+ * Add pd address to the struct task
+ *
+ */