address NativeLookup::lookup_base(methodHandle method, bool& in_base_library, TRAPS) {

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      address entry = NULL;
      ResourceMark rm(THREAD);

  {- -------------------------------------------
  (1) まず, NativeLookup::lookup_entry() で探してみる. 
      見つかればここでリターン.
      ---------------------------------------- -}

      entry = lookup_entry(method, in_base_library, THREAD);
      if (entry != NULL) return entry;

  {- -------------------------------------------
  (1) もし NativeLookup::lookup_entry() で見つからなければ, 
      JVMTI で指定された prefix を除去すれば見つかる可能性が残っているため
      NativeLookup::lookup_entry_prefixed() で探してみる.
      見つかればここでリターン.
      ---------------------------------------- -}

      // standard native method resolution has failed.  Check if there are any
      // JVM TI prefixes which have been applied to the native method name.
      entry = lookup_entry_prefixed(method, in_base_library, THREAD);
      if (entry != NULL) return entry;

  {- -------------------------------------------
  (1) どちらでも見つからなければ UnsatisfiedLinkError.
      ---------------------------------------- -}

      // Native function not found, throw UnsatisfiedLinkError
      THROW_MSG_0(vmSymbols::java_lang_UnsatisfiedLinkError(),
                  method->name_and_sig_as_C_string());
    }