1 files changed, 18 insertions, 0 deletions
diff --git a/libc/arch-arm64/dynamic_function_dispatch.cpp b/libc/arch-arm64/dynamic_function_dispatch.cpp
index 83e5ca4da..aa0767c76 100644
--- a/libc/arch-arm64/dynamic_function_dispatch.cpp
+++ b/libc/arch-arm64/dynamic_function_dispatch.cpp
@@ -41,6 +41,24 @@ DEFINE_IFUNC_FOR(memchr) {
     }
 }
 
+typedef void* memcpy_func(void*, const void*, size_t);
+DEFINE_IFUNC_FOR(memcpy) {
+    if (arg->_hwcap2 & HWCAP2_BTI) {
+        RETURN_FUNC(memcpy_func, memcpy_opt);
+    } else {
+        RETURN_FUNC(memcpy_func, memcpy_generic);
+    }
+}
+
+typedef void* memmove_func(void*, const void*, size_t);
+DEFINE_IFUNC_FOR(memmove) {
+    if (arg->_hwcap2 & HWCAP2_BTI) {
+        RETURN_FUNC(memmove_func, memmove_opt);
+    } else {
+        RETURN_FUNC(memmove_func, memmove_generic);
+    }
+}
+
 typedef int stpcpy_func(char*, const char*);
 DEFINE_IFUNC_FOR(stpcpy) {
     if (arg->_hwcap2 & HWCAP2_MTE) {