diff --git a/libc/arch-arm64/dynamic_function_dispatch.cpp b/libc/arch-arm64/dynamic_function_dispatch.cpp
new file mode 100644
index 0000000..37abea4
--- /dev/null
+++ b/libc/arch-arm64/dynamic_function_dispatch.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <platform/bionic/mte_kernel.h>
+#include <private/bionic_ifuncs.h>
+#include <stddef.h>
+#include <sys/auxv.h>
+
+extern "C" {
+
+static bool supports_mte(unsigned long hwcap2) {
+#ifdef ANDROID_EXPERIMENTAL_MTE
+    return hwcap2 & HWCAP2_MTE;
+#else
+    (void)hwcap2;
+    return false;
+#endif
+}
+
+typedef void* memchr_func(const void*, int, size_t);
+DEFINE_IFUNC_FOR(memchr) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(memchr_func, memchr_mte);
+    } else {
+        RETURN_FUNC(memchr_func, memchr_default);
+    }
+}
+
+typedef char* strchr_func(const char*, int);
+DEFINE_IFUNC_FOR(strchr) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strchr_func, strchr_mte);
+    } else {
+        RETURN_FUNC(strchr_func, strchr_default);
+    }
+}
+
+typedef int strcmp_func(const char*, const char*);
+DEFINE_IFUNC_FOR(strcmp) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strcmp_func, strcmp_mte);
+    } else {
+        RETURN_FUNC(strcmp_func, strcmp_default);
+    }
+}
+
+typedef size_t strlen_func(const char*);
+DEFINE_IFUNC_FOR(strlen) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strlen_func, strlen_mte);
+    } else {
+        RETURN_FUNC(strlen_func, strlen_default);
+    }
+}
+
+typedef int strncmp_func(const char*, const char*, int);
+DEFINE_IFUNC_FOR(strncmp) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strncmp_func, strncmp_mte);
+    } else {
+        RETURN_FUNC(strncmp_func, strncmp_default);
+    }
+}
+
+typedef size_t strnlen_func(const char*, int);
+DEFINE_IFUNC_FOR(strnlen) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strnlen_func, strnlen_mte);
+    } else {
+        RETURN_FUNC(strnlen_func, strnlen_default);
+    }
+}
+
+}  // extern "C"