1 /*
2  * Copyright (c) 2017, 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 
24 
25 
26 package jdk.tools.jaotc.binformat.macho;
27 
28 import java.nio.ByteBuffer;
29 
30 import jdk.tools.jaotc.binformat.macho.MachO.mach_header_64;
31 
32 final class MachOHeader {
33     private final ByteBuffer header;
34 
MachOHeader()35     MachOHeader() {
36         header = MachOByteBuffer.allocate(mach_header_64.totalsize);
37 
38         header.putInt(mach_header_64.magic.off, mach_header_64.MH_MAGIC_64);
39         header.putInt(mach_header_64.cputype.off, MachOTargetInfo.getMachOArch());
40         header.putInt(mach_header_64.cpusubtype.off, MachOTargetInfo.getMachOSubArch());
41         header.putInt(mach_header_64.flags.off, 0x2000);
42         header.putInt(mach_header_64.filetype.off, mach_header_64.MH_OBJECT);
43     }
44 
setCmdSizes(int ncmds, int sizeofcmds)45     void setCmdSizes(int ncmds, int sizeofcmds) {
46         header.putInt(mach_header_64.ncmds.off, ncmds);
47         header.putInt(mach_header_64.sizeofcmds.off, sizeofcmds);
48     }
49 
getCmdSize()50     int getCmdSize() {
51         return (header.getInt(mach_header_64.sizeofcmds.off));
52     }
53 
getArray()54     byte[] getArray() {
55         return header.array();
56     }
57 }
58