diff --git a/xzre_code/CMakeLists.txt b/xzre_code/CMakeLists.txt
index dbe8437..561efad 100644
--- a/xzre_code/CMakeLists.txt
+++ b/xzre_code/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_library(xzre_code
 	backdoor_entry.c
 	chacha_decrypt.c
+	count_bits.c
 	count_pointers.c
 	elf_parse.c
 	elf_symbol_get_addr.c
diff --git a/xzre_code/count_bits.c b/xzre_code/count_bits.c
new file mode 100644
index 0000000..7a45717
--- /dev/null
+++ b/xzre_code/count_bits.c
@@ -0,0 +1,10 @@
+/**
+ * Copyright (C) 2024 Stefano Moioli <smxdev4@gmail.com>
+ **/
+#include "xzre.h"
+
+u32 count_bits(u64 x){
+	u32 result;
+	for(result=0; x; ++result, x &= x-1);
+	return result;
+}