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 package jdk.tools.jaotc.binformat.elf;
  25 
  26 import java.nio.ByteBuffer;
  27 import java.nio.ByteOrder;
  28 
  29 import jdk.tools.jaotc.binformat.NativeSymbol;
  30 import jdk.tools.jaotc.binformat.elf.Elf;
  31 import jdk.tools.jaotc.binformat.elf.Elf.Elf64_Sym;
  32 import jdk.tools.jaotc.binformat.elf.Elf.Elf64_Ehdr;
  33 import jdk.tools.jaotc.binformat.elf.ElfByteBuffer;
  34 
  35 public class ElfSymbol extends NativeSymbol {
  36     ByteBuffer sym;
  37 
  38     public ElfSymbol(int symbolindex, int strindex, byte type, byte bind,
  39                      byte sectindex, long offset, long size) {
  40         super(symbolindex);
  41         sym = ElfByteBuffer.allocate(Elf64_Sym.totalsize);
  42 
  43         sym.putInt(Elf64_Sym.st_name.off, strindex);
  44         sym.put(Elf64_Sym.st_info.off, Elf64_Sym.ELF64_ST_INFO(bind, type));
  45         sym.put(Elf64_Sym.st_other.off, (byte)0);
  46         // Section indexes start at 1 but we manage the index internally
  47         // as 0 relative
  48         sym.putChar(Elf64_Sym.st_shndx.off, (char)(sectindex));
  49         sym.putLong(Elf64_Sym.st_value.off, offset);
  50         sym.putLong(Elf64_Sym.st_size.off, size);
  51     }
  52 
  53     public byte[] getArray() {
  54         return sym.array();
  55     }
  56 }
  57