1 /* 2 * Copyright (c) 2016, 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; 27 28 public final class Relocation { 29 30 // @formatter:off (workaround for Eclipse formatting bug) 31 public enum RelocType { 32 UNDEFINED, 33 JAVA_CALL_INDIRECT, 34 JAVA_CALL_DIRECT, 35 FOREIGN_CALL_INDIRECT_GOT, // Call to address in GOT cell 36 STUB_CALL_DIRECT, 37 METASPACE_GOT_REFERENCE, 38 EXTERNAL_GOT_TO_PLT, 39 EXTERNAL_PLT_TO_GOT 40 } 41 // @formatter:on 42 43 private final RelocType type; 44 45 /** 46 * Byte offset from the beginning of the file affected by relocation. 47 */ 48 private final int offset; 49 50 /** 51 * Size of relocation. 52 */ 53 private final int size; 54 55 /** 56 * Symbol associated with this relocation. 57 */ 58 private final Symbol symbol; 59 60 /** 61 * Section this relocation entry modifies. 62 */ 63 private final ByteContainer section; 64 65 public Relocation(int offset, RelocType type, int size, ByteContainer section, Symbol sym) { 66 if (sym == null) { 67 throw new InternalError("must have symbol"); 68 } 69 this.offset = offset; 70 this.type = type; 71 this.size = size; 72 this.symbol = sym; 73 this.section = section; 74 section.setHasRelocations(); 75 } 76 77 public RelocType getType() { 78 return type; 79 } 80 81 public int getOffset() { 82 return offset; 83 } 84 85 public int getSize() { 86 return size; 87 } 88 89 public Symbol getSymbol() { 90 return symbol; 91 } 92 93 public ByteContainer getSection() { 94 return section; 95 } 96 97 }