void MacroAssembler::call_VM_leaf(address entry_point, Register arg_0, Register arg_1, Register arg_2) {

  {- -------------------------------------------
  (1) コード生成:
      「引数を積んだ後, MacroAssembler::call_VM_leaf() が生成するコードを実行するだけ.」
      ---------------------------------------- -}

      LP64_ONLY(assert(arg_0 != c_rarg2, "smashed arg"));
      LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg"));
      pass_arg2(this, arg_2);
      LP64_ONLY(assert(arg_0 != c_rarg1, "smashed arg"));
      pass_arg1(this, arg_1);
      pass_arg0(this, arg_0);
      call_VM_leaf(entry_point, 3);
    }