diff --git js/src/jit/ExecutableAllocator.h js/src/jit/ExecutableAllocator.h
index d55c8ed..ab6188f 100644
--- js/src/jit/ExecutableAllocator.h
+++ js/src/jit/ExecutableAllocator.h
@@ -405,6 +405,11 @@ public:
         _flush_cache(reinterpret_cast<char*>(code), size, BCACHE);
 #endif
     }
+#elif defined(JS_CODEGEN_ARM) && (defined(__FreeBSD__) || defined(__NetBSD__))
+    static void cacheFlush(void* code, size_t size)
+    {
+        __clear_cache(code, reinterpret_cast<char*>(code) + size);
+    }
 #elif defined(JS_CODEGEN_ARM) && (defined(__linux__) || defined(ANDROID)) && defined(__GNUC__)
     static void cacheFlush(void* code, size_t size)
     {