diff --git a/libc/arch-arm64/dynamic_function_dispatch.cpp b/libc/arch-arm64/dynamic_function_dispatch.cpp
index 0edc7f7..cd55311 100644
--- a/libc/arch-arm64/dynamic_function_dispatch.cpp
+++ b/libc/arch-arm64/dynamic_function_dispatch.cpp
@@ -41,6 +41,12 @@
     }
 }
 
+typedef void* memcmp_func(void*, const void*, size_t);
+DEFINE_IFUNC_FOR(memcmp) {
+    // TODO: enable the SVE version.
+    RETURN_FUNC(memcmp_func, __memcmp_aarch64);
+}
+
 typedef void* memcpy_func(void*, const void*, size_t);
 DEFINE_IFUNC_FOR(memcpy) {
     if (arg->_hwcap & HWCAP_ASIMD) {
@@ -110,6 +116,12 @@
     RETURN_FUNC(strncmp_func, __strncmp_aarch64);
 }
 
+typedef size_t strnlen_func(const char*);
+DEFINE_IFUNC_FOR(strnlen) {
+    // TODO: enable the SVE version.
+    RETURN_FUNC(strnlen_func, __strnlen_aarch64);
+}
+
 typedef char* strrchr_func(const char*, int);
 DEFINE_IFUNC_FOR(strrchr) {
     if (arg->_hwcap2 & HWCAP2_MTE) {
diff --git a/libc/arch-arm64/static_function_dispatch.S b/libc/arch-arm64/static_function_dispatch.S
index 5c36de6..c7557f8 100644
--- a/libc/arch-arm64/static_function_dispatch.S
+++ b/libc/arch-arm64/static_function_dispatch.S
@@ -34,6 +34,7 @@
 END(name)
 
 FUNCTION_DELEGATE(memchr, __memchr_aarch64_mte)
+FUNCTION_DELEGATE(memcmp, __memcmp_aarch64)
 FUNCTION_DELEGATE(memcpy, __memcpy_aarch64)
 FUNCTION_DELEGATE(memmove, __memmove_aarch64)
 FUNCTION_DELEGATE(stpcpy, __stpcpy_aarch64)
@@ -44,5 +45,6 @@
 FUNCTION_DELEGATE(strlen, __strlen_aarch64_mte)
 FUNCTION_DELEGATE(strrchr, __strrchr_aarch64_mte)
 FUNCTION_DELEGATE(strncmp, __strncmp_aarch64)
+FUNCTION_DELEGATE(strnlen, __strnlen_aarch64)
 
 NOTE_GNU_PROPERTY()