1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package jdk.internal.foreign.abi.x64.sysv;
  25 
  26 import jdk.internal.foreign.abi.SystemABI;
  27 import jdk.internal.foreign.abi.VarargsInvoker;
  28 
  29 import java.foreign.Library;
  30 import java.foreign.NativeMethodType;
  31 import java.lang.invoke.MethodHandle;
  32 import java.lang.invoke.MethodType;
  33 
  34 class VarargsInvokerImpl extends VarargsInvoker {
  35 
  36     private VarargsInvokerImpl(Library.Symbol symbol, NativeMethodType nativeMethodType) {
  37         super(symbol, nativeMethodType);
  38     }
  39 
  40     public static MethodHandle make(Library.Symbol symbol, NativeMethodType nativeMethodType) {
  41         VarargsInvokerImpl invoker = new VarargsInvokerImpl(symbol, nativeMethodType);
  42         MethodType methodType = nativeMethodType.methodType();
  43         return INVOKE_MH.bindTo(invoker).asCollector(Object[].class, methodType.parameterCount())
  44                 .asType(methodType);
  45     }
  46 
  47     @Override
  48     protected MethodHandle specialize(NativeMethodType newNativeMethodType){
  49         return SystemABI.getInstance().downcallHandle(symbol, newNativeMethodType);
  50     }
  51 
  52 }