Full savestating to memory

lib/cpu.c

@@ -5,6 +5,7 @@
 #include <interrupts.h>
 #include <dbg.h>
 #include <timer.h>
+#include <memory.h>
 
 cpu_context ctx = {0};
 #define CPU_DEBUG 0
@@ -123,4 +124,12 @@ void cpu_request_interrupt(interrupt_type t) {
 
 cpu_context *cpu_get_context() {
     return &ctx;
+}
+
+void cpu_save_state(cpu_state* state) {
+    state->ctx = ctx;
+}
+
+void cpu_load_state(const cpu_state* state) {
+    ctx = state->ctx;
 }