implement basic multitasking

include/task.h

@@ -0,0 +1,32 @@
+#ifndef TASK_H
+#define TASK_H
+
+#include <stdint.h>
+
+typedef enum TaskState
+{
+	Ready,
+	Running,
+	Waiting,
+	Terminated
+} TaskState;
+
+typedef void (*EntryPoint)(void);
+
+typedef struct Process
+{
+	uint32_t   pid;			   // Process ID
+	TaskState  state;		   // Process state
+	uintptr_t  programCounter; // Program Counter
+	uintptr_t* stackBase;	   // Top of the stack
+	uintptr_t* stackPointer;   // Stack Pointer
+	uint32_t   flags;		   // Status/Flags register
+	struct Process*   next;		   // Pointer to the next task in the list
+} Process;
+
+Process* task_create(EntryPoint func);
+void	 scheduler_init();
+void	 schedule();
+void scheduler_lock();
+void scheduler_unlock();
+#endif