Start to rearrange archetecture specific code

sys.h

@@ -0,0 +1,12 @@
+#ifndef MINIMALSYS_H
+#include <stdint.h>
+
+void exit(int8_t status);
+
+#define STDIO 1
+#define STDERR 2
+intptr_t write(int32_t fd, const void* buf, intptr_t size);
+//intptr_t read(int32_t fd, const void* buf, intptr_t size);
+
+uint32_t fork();
+#endif // !MINIMALSYS_H