void MacroAssembler::call_VM(Register oop_result,
                             Register last_java_sp,
                             address entry_point,
                             Register arg_1,
                             Register arg_2,
                             Register arg_3,
                             bool check_exceptions) {

  {- -------------------------------------------
  (1) コード生成:
      「引数を積んだ後, MacroAssembler::call_VM() が生成するコードを実行するだけ.
       なお, この場合は last_java_sp の値を指定して呼び出す.」
      ---------------------------------------- -}

      LP64_ONLY(assert(arg_1 != c_rarg3, "smashed arg"));
      LP64_ONLY(assert(arg_2 != c_rarg3, "smashed arg"));
      pass_arg3(this, arg_3);
      LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg"));
      pass_arg2(this, arg_2);
      pass_arg1(this, arg_1);
      call_VM(oop_result, last_java_sp, entry_point, 3, check_exceptions);
    }