diff --git a/r5dev/public/include/utility.h b/r5dev/public/include/utility.h
index 2cfc21c8..a5fc974b 100644
--- a/r5dev/public/include/utility.h
+++ b/r5dev/public/include/utility.h
@@ -32,6 +32,11 @@ vector<int> StringToBytes(const string& svInput, bool bNullTerminator);
 vector<int> PatternToBytes(const string& svInput);
 vector<int> IntToDigits(int value);
 
+void PrintM128i8(__m128i in);
+void PrintM128i16(__m128i in);
+void PrintM128i32(__m128i in);
+void PrintM128i64(__m128i in);
+
 string PrintPercentageEscape(const string& svInput);
 
 /////////////////////////////////////////////////////////////////////////////
diff --git a/r5dev/public/utility.cpp b/r5dev/public/utility.cpp
index f9dacd35..2b086537 100644
--- a/r5dev/public/utility.cpp
+++ b/r5dev/public/utility.cpp
@@ -489,6 +489,35 @@ vector<int> IntToDigits(int value)
     return vDigits;
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// For printing __m128i datatypes.
+void PrintM128i8(__m128i in)
+{
+    alignas(16) uint8_t v[16];
+    _mm_store_si128(reinterpret_cast<__m128i*>(v), in);
+    printf("v16_u8: %x %x %x %x | %x %x %x %x | %x %x %x %x | %x %x %x %x\n",
+        v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7],
+        v[8], v[9], v[10], v[11], v[12], v[13], v[14], v[15]);
+}
+void PrintM128i16(__m128i in)
+{
+    alignas(16) uint16_t v[8];
+    _mm_store_si128(reinterpret_cast<__m128i*>(v), in);
+    printf("v8_u16: %x %x %x %x,  %x %x %x %x\n", v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]);
+}
+void PrintM128i32(__m128i in)
+{
+    alignas(16) uint32_t v[4];
+    _mm_store_si128(reinterpret_cast<__m128i*>(v), in);
+    printf("v4_u32: %x %x %x %x\n", v[0], v[1], v[2], v[3]);
+}
+void PrintM128i64(__m128i in)
+{
+    alignas(16) uint64_t v[2];  // uint64_t might give format-string warnings with %llx; it's just long in some ABIs
+    _mm_store_si128(reinterpret_cast<__m128i*>(v), in);
+    printf("v2_u64: %llx %llx\n", v[0], v[1]);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // For escaping the '%' character for *rintf.
 string PrintPercentageEscape(const string& svInput)