Add chainloader (stage2) (need to edit more files)

fusee/fusee-secondary/src/chainloader.c

@@ -0,0 +1,12 @@
+#include "chainloader.h"
+
+uint8_t g_payload_arg_data[PAYLOAD_ARG_DATA_MAX_SIZE] = {1};
+
+#pragma GCC optimize (3)
+void relocate_and_chainload_main(uintptr_t load_address, uintptr_t src_address, size_t size, int argc) {
+    for(size_t i = 0; i < size; i++) {
+        *(uint8_t *)(load_address + i) = *(uint8_t *)(src_address + i);
+    }
+
+    ((void (*)(int, void *))load_address)(argc, g_payload_arg_data);
+}