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