Add code to detect CPU microarchitecture (Intel only, at the moment)

src/uarch.h

@@ -0,0 +1,10 @@
+#ifndef __UARCH__
+#define __UARCH__
+
+#include <stdint.h>
+
+struct uarch;
+
+struct uarch* get_uarch_from_cpuid(uint32_t ef, uint32_t f, uint32_t em, uint32_t m, int s);
+
+#endif