diff --git a/src/xenia/base/string_util.cc b/src/xenia/base/string_util.cc
new file mode 100644
index 000000000..0af994f57
--- /dev/null
+++ b/src/xenia/base/string_util.cc
@@ -0,0 +1,68 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/base/string_util.h"
+
+#include <cinttypes>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+
+#include "xenia/base/platform.h"
+#include "xenia/base/vec128.h"
+
+namespace xe {
+namespace string_util {
+
+inline std::string to_hex_string(uint32_t value) {
+  char buffer[21];
+  std::snprintf(buffer, sizeof(buffer), "%08" PRIX32, value);
+  return std::string(buffer);
+}
+
+inline std::string to_hex_string(uint64_t value) {
+  char buffer[21];
+  std::snprintf(buffer, sizeof(buffer), "%016" PRIX64, value);
+  return std::string(buffer);
+}
+
+inline std::string to_hex_string(const vec128_t& value) {
+  char buffer[128];
+  std::snprintf(buffer, sizeof(buffer), "[%.8X, %.8X, %.8X, %.8X]",
+                value.u32[0], value.u32[1], value.u32[2], value.u32[3]);
+  return std::string(buffer);
+}
+
+#if XE_ARCH_AMD64
+
+// TODO(DrChat): This should not exist. Force the caller to use vec128.
+inline std::string to_hex_string(const __m128& value) {
+  char buffer[128];
+  float f[4];
+  _mm_storeu_ps(f, value);
+  std::snprintf(
+      buffer, sizeof(buffer), "[%.8X, %.8X, %.8X, %.8X]",
+      *reinterpret_cast<uint32_t*>(&f[0]), *reinterpret_cast<uint32_t*>(&f[1]),
+      *reinterpret_cast<uint32_t*>(&f[2]), *reinterpret_cast<uint32_t*>(&f[3]));
+  return std::string(buffer);
+}
+
+inline std::string to_string(const __m128& value) {
+  char buffer[128];
+  float f[4];
+  _mm_storeu_ps(f, value);
+  std::snprintf(buffer, sizeof(buffer), "(%F, %F, %F, %F)", f[0], f[1], f[2], f[3]);
+  return std::string(buffer);
+}
+
+#endif
+
+}  // namespace string_util
+}  // namespace xe
diff --git a/src/xenia/base/string_util.h b/src/xenia/base/string_util.h
index 9b03527f2..49dacf44b 100644
--- a/src/xenia/base/string_util.h
+++ b/src/xenia/base/string_util.h
@@ -22,17 +22,8 @@
 namespace xe {
 namespace string_util {
 
-inline std::string to_hex_string(uint32_t value) {
-  char buffer[21];
-  snprintf(buffer, sizeof(buffer), "%08" PRIX32, value);
-  return std::string(buffer);
-}
-
-inline std::string to_hex_string(uint64_t value) {
-  char buffer[21];
-  snprintf(buffer, sizeof(buffer), "%016" PRIX64, value);
-  return std::string(buffer);
-}
+extern inline std::string to_hex_string(uint32_t value);
+extern inline std::string to_hex_string(uint64_t value);
 
 inline std::string to_hex_string(float value) {
   union {
@@ -52,34 +43,13 @@ inline std::string to_hex_string(double value) {
   return to_hex_string(v.ui);
 }
 
-inline std::string to_hex_string(const vec128_t& value) {
-  char buffer[128];
-  snprintf(buffer, sizeof(buffer), "[%.8X, %.8X, %.8X, %.8X]", value.u32[0],
-           value.u32[1], value.u32[2], value.u32[3]);
-  return std::string(buffer);
-}
+extern inline std::string to_hex_string(const vec128_t& value);
 
 #if XE_ARCH_AMD64
 
 // TODO(DrChat): This should not exist. Force the caller to use vec128.
-inline std::string to_hex_string(const __m128& value) {
-  char buffer[128];
-  float f[4];
-  _mm_storeu_ps(f, value);
-  snprintf(
-      buffer, sizeof(buffer), "[%.8X, %.8X, %.8X, %.8X]",
-      *reinterpret_cast<uint32_t*>(&f[0]), *reinterpret_cast<uint32_t*>(&f[1]),
-      *reinterpret_cast<uint32_t*>(&f[2]), *reinterpret_cast<uint32_t*>(&f[3]));
-  return std::string(buffer);
-}
-
-inline std::string to_string(const __m128& value) {
-  char buffer[128];
-  float f[4];
-  _mm_storeu_ps(f, value);
-  snprintf(buffer, sizeof(buffer), "(%F, %F, %F, %F)", f[0], f[1], f[2], f[3]);
-  return std::string(buffer);
-}
+extern inline std::string to_hex_string(const __m128& value);
+extern inline std::string to_string(const __m128& value);
 
 #endif
 
diff --git a/src/xenia/base/vec128.cc b/src/xenia/base/vec128.cc
new file mode 100644
index 000000000..14bcfe590
--- /dev/null
+++ b/src/xenia/base/vec128.cc
@@ -0,0 +1,26 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <cstddef>
+#include <string>
+
+#include "xenia/base/math.h"
+#include "xenia/base/platform.h"
+#include "xenia/base/vec128.h"
+
+namespace xe {
+
+inline std::string to_string(const vec128_t& value) {
+  char buffer[128];
+  std::snprintf(buffer, sizeof(buffer), "(%g, %g, %g, %g)", value.x, value.y,
+                value.z, value.w);
+  return std::string(buffer);
+}
+
+}  // namespace xe
diff --git a/src/xenia/base/vec128.h b/src/xenia/base/vec128.h
index 8779ade80..0b0ccaeee 100644
--- a/src/xenia/base/vec128.h
+++ b/src/xenia/base/vec128.h
@@ -264,12 +264,7 @@ static inline vec128_t vec128b(uint8_t x0, uint8_t x1, uint8_t x2, uint8_t x3,
   return v;
 }
 
-inline std::string to_string(const vec128_t& value) {
-  char buffer[128];
-  snprintf(buffer, sizeof(buffer), "(%g, %g, %g, %g)", value.x, value.y,
-           value.z, value.w);
-  return std::string(buffer);
-}
+extern inline std::string to_string(const vec128_t& value);
 
 }  // namespace xe