1/*
2 * Copyright (c) 2017, 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
24package jdk.tools.jaotc.binformat.macho;
25
26import java.nio.ByteBuffer;
27
28import jdk.tools.jaotc.binformat.macho.MachO.dysymtab_command;
29import jdk.tools.jaotc.binformat.macho.MachOByteBuffer;
30
31final class MachODySymtab {
32    private final ByteBuffer dysymtab;
33
34    MachODySymtab(int nlocal, int nglobal, int nundef) {
35        dysymtab = MachOByteBuffer.allocate(dysymtab_command.totalsize);
36
37        dysymtab.putInt(dysymtab_command.cmd.off, dysymtab_command.LC_DYSYMTAB);
38        dysymtab.putInt(dysymtab_command.cmdsize.off, dysymtab_command.totalsize);
39        dysymtab.putInt(dysymtab_command.ilocalsym.off, 0);
40        dysymtab.putInt(dysymtab_command.nlocalsym.off, nlocal);
41        dysymtab.putInt(dysymtab_command.iextdefsym.off, nlocal);
42        dysymtab.putInt(dysymtab_command.nextdefsym.off, nglobal);
43        dysymtab.putInt(dysymtab_command.iundefsym.off, nlocal + nglobal);
44        dysymtab.putInt(dysymtab_command.nundefsym.off, nundef);
45    }
46
47    byte[] getArray() {
48        return dysymtab.array();
49    }
50}
51