1 /*
 2  * Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2023, Institute of Software, Chinese Academy of Sciences.
 4  * All rights reserved.
 5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 6  *
 7  * This code is free software; you can redistribute it and/or modify it
 8  * under the terms of the GNU General Public License version 2 only, as
 9  * published by the Free Software Foundation.  Oracle designates this
10  * particular file as subject to the "Classpath" exception as provided
11  * by Oracle in the LICENSE file that accompanied this code.
12  *
13  * This code is distributed in the hope that it will be useful, but WITHOUT
14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16  * version 2 for more details (a copy is included in the LICENSE file that
17  * accompanied this code).
18  *
19  * You should have received a copy of the GNU General Public License version
20  * 2 along with this work; if not, write to the Free Software Foundation,
21  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22  *
23  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
24  * or visit www.oracle.com if you need additional information or have any
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28 
29 package jdk.internal.foreign.abi.riscv64.linux;
30 
31 import jdk.internal.foreign.abi.AbstractLinker;
32 import jdk.internal.foreign.abi.LinkerOptions;
33 
34 import java.lang.foreign.FunctionDescriptor;
35 import java.lang.invoke.MethodHandle;
36 import java.lang.invoke.MethodType;
37 import java.nio.ByteOrder;
38 
39 public final class LinuxRISCV64Linker extends AbstractLinker {
40 
41     public static LinuxRISCV64Linker getInstance() {
42         final class Holder {
43             private static final LinuxRISCV64Linker INSTANCE = new LinuxRISCV64Linker();
44         }
45 
46         return Holder.INSTANCE;
47     }
48 
49     private LinuxRISCV64Linker() {
50         // Ensure there is only one instance
51     }
52 
53     @Override
54     protected MethodHandle arrangeDowncall(MethodType inferredMethodType, FunctionDescriptor function, LinkerOptions options) {
55         return LinuxRISCV64CallArranger.arrangeDowncall(inferredMethodType, function, options);
56     }
57 
58     @Override
59     protected UpcallStubFactory arrangeUpcall(MethodType targetType, FunctionDescriptor function, LinkerOptions options) {
60         return LinuxRISCV64CallArranger.arrangeUpcall(targetType, function, options);
61     }
62 
63     @Override
64     protected ByteOrder linkerByteOrder() {
65         return ByteOrder.LITTLE_ENDIAN;
66     }
67 }