1 /*
   2  * Copyright (c) 2015, 2018, 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 package jdk.internal.foreign.abi;
  24 
  25 public enum StorageClass {
  26 
  27     //Note: The order of the argument/return register classes is subtly relevant, as that is the order in which the
  28     //binding words will be laid out in the input/output long arrays by the universal invoker.
  29     STACK_ARGUMENT_SLOT(true, false),
  30     VECTOR_ARGUMENT_REGISTER(true, false),
  31     INTEGER_ARGUMENT_REGISTER(true, false),
  32     VECTOR_RETURN_REGISTER(false, true),
  33     INTEGER_RETURN_REGISTER(false, true),
  34     X87_RETURN_REGISTER(false, true);
  35 
  36     public static final StorageClass[] ARGUMENT_STORAGE_CLASSES = {
  37             StorageClass.STACK_ARGUMENT_SLOT,
  38             StorageClass.VECTOR_ARGUMENT_REGISTER,
  39             StorageClass.INTEGER_ARGUMENT_REGISTER
  40     };
  41 
  42     public static final StorageClass[] RETURN_STORAGE_CLASSES = {
  43             StorageClass.VECTOR_RETURN_REGISTER,
  44             StorageClass.INTEGER_RETURN_REGISTER,
  45             StorageClass.X87_RETURN_REGISTER
  46     };
  47 
  48     final boolean isArgumentClass;
  49     final boolean isReturnClass;
  50 
  51     StorageClass(boolean isArgumentClass, boolean isReturnClass) {
  52         this.isArgumentClass = isArgumentClass;
  53         this.isReturnClass = isReturnClass;
  54     }
  55 
  56     public boolean isArgumentClass() {
  57         return isArgumentClass;
  58     }
  59 
  60     public boolean isReturnClass() {
  61         return isReturnClass;
  62     }
  63 }