1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 package com.sun.org.apache.bcel.internal.generic; 6 7 /* ==================================================================== 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 2001 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, 26 * if any, must include the following acknowledgment: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowledgment may appear in the software itself, 30 * if and wherever such third-party acknowledgments normally appear. 31 * 32 * 4. The names "Apache" and "Apache Software Foundation" and 33 * "Apache BCEL" must not be used to endorse or promote products 34 * derived from this software without prior written permission. For 35 * written permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache", 38 * "Apache BCEL", nor may "Apache" appear in their name, without 39 * prior written permission of the Apache Software Foundation. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>. 59 */ 60 61 import com.sun.org.apache.bcel.internal.Constants; 62 63 /** 64 * This interface contains shareable instruction objects. 65 * 66 * In order to save memory you can use some instructions multiply, 67 * since they have an immutable state and are directly derived from 68 * Instruction. I.e. they have no instance fields that could be 69 * changed. Since some of these instructions like ICONST_0 occur 70 * very frequently this can save a lot of time and space. This 71 * feature is an adaptation of the FlyWeight design pattern, we 72 * just use an array instead of a factory. 73 * 74 * The Instructions can also accessed directly under their names, so 75 * it's possible to write il.append(Instruction.ICONST_0); 76 * 77 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 78 */ 79 public interface InstructionConstants { 80 /** Predefined instruction objects 81 */ 82 public static final Instruction NOP = new NOP(); 83 public static final Instruction ACONST_NULL = new ACONST_NULL(); 84 public static final Instruction ICONST_M1 = new ICONST(-1); 85 public static final Instruction ICONST_0 = new ICONST(0); 86 public static final Instruction ICONST_1 = new ICONST(1); 87 public static final Instruction ICONST_2 = new ICONST(2); 88 public static final Instruction ICONST_3 = new ICONST(3); 89 public static final Instruction ICONST_4 = new ICONST(4); 90 public static final Instruction ICONST_5 = new ICONST(5); 91 public static final Instruction LCONST_0 = new LCONST(0); 92 public static final Instruction LCONST_1 = new LCONST(1); 93 public static final Instruction FCONST_0 = new FCONST(0); 94 public static final Instruction FCONST_1 = new FCONST(1); 95 public static final Instruction FCONST_2 = new FCONST(2); 96 public static final Instruction DCONST_0 = new DCONST(0); 97 public static final Instruction DCONST_1 = new DCONST(1); 98 public static final ArrayInstruction IALOAD = new IALOAD(); 99 public static final ArrayInstruction LALOAD = new LALOAD(); 100 public static final ArrayInstruction FALOAD = new FALOAD(); 101 public static final ArrayInstruction DALOAD = new DALOAD(); 102 public static final ArrayInstruction AALOAD = new AALOAD(); 103 public static final ArrayInstruction BALOAD = new BALOAD(); 104 public static final ArrayInstruction CALOAD = new CALOAD(); 105 public static final ArrayInstruction SALOAD = new SALOAD(); 106 public static final ArrayInstruction IASTORE = new IASTORE(); 107 public static final ArrayInstruction LASTORE = new LASTORE(); 108 public static final ArrayInstruction FASTORE = new FASTORE(); 109 public static final ArrayInstruction DASTORE = new DASTORE(); 110 public static final ArrayInstruction AASTORE = new AASTORE(); 111 public static final ArrayInstruction BASTORE = new BASTORE(); 112 public static final ArrayInstruction CASTORE = new CASTORE(); 113 public static final ArrayInstruction SASTORE = new SASTORE(); 114 public static final StackInstruction POP = new POP(); 115 public static final StackInstruction POP2 = new POP2(); 116 public static final StackInstruction DUP = new DUP(); 117 public static final StackInstruction DUP_X1 = new DUP_X1(); 118 public static final StackInstruction DUP_X2 = new DUP_X2(); 119 public static final StackInstruction DUP2 = new DUP2(); 120 public static final StackInstruction DUP2_X1 = new DUP2_X1(); 121 public static final StackInstruction DUP2_X2 = new DUP2_X2(); 122 public static final StackInstruction SWAP = new SWAP(); 123 public static final ArithmeticInstruction IADD = new IADD(); 124 public static final ArithmeticInstruction LADD = new LADD(); 125 public static final ArithmeticInstruction FADD = new FADD(); 126 public static final ArithmeticInstruction DADD = new DADD(); 127 public static final ArithmeticInstruction ISUB = new ISUB(); 128 public static final ArithmeticInstruction LSUB = new LSUB(); 129 public static final ArithmeticInstruction FSUB = new FSUB(); 130 public static final ArithmeticInstruction DSUB = new DSUB(); 131 public static final ArithmeticInstruction IMUL = new IMUL(); 132 public static final ArithmeticInstruction LMUL = new LMUL(); 133 public static final ArithmeticInstruction FMUL = new FMUL(); 134 public static final ArithmeticInstruction DMUL = new DMUL(); 135 public static final ArithmeticInstruction IDIV = new IDIV(); 136 public static final ArithmeticInstruction LDIV = new LDIV(); 137 public static final ArithmeticInstruction FDIV = new FDIV(); 138 public static final ArithmeticInstruction DDIV = new DDIV(); 139 public static final ArithmeticInstruction IREM = new IREM(); 140 public static final ArithmeticInstruction LREM = new LREM(); 141 public static final ArithmeticInstruction FREM = new FREM(); 142 public static final ArithmeticInstruction DREM = new DREM(); 143 public static final ArithmeticInstruction INEG = new INEG(); 144 public static final ArithmeticInstruction LNEG = new LNEG(); 145 public static final ArithmeticInstruction FNEG = new FNEG(); 146 public static final ArithmeticInstruction DNEG = new DNEG(); 147 public static final ArithmeticInstruction ISHL = new ISHL(); 148 public static final ArithmeticInstruction LSHL = new LSHL(); 149 public static final ArithmeticInstruction ISHR = new ISHR(); 150 public static final ArithmeticInstruction LSHR = new LSHR(); 151 public static final ArithmeticInstruction IUSHR = new IUSHR(); 152 public static final ArithmeticInstruction LUSHR = new LUSHR(); 153 public static final ArithmeticInstruction IAND = new IAND(); 154 public static final ArithmeticInstruction LAND = new LAND(); 155 public static final ArithmeticInstruction IOR = new IOR(); 156 public static final ArithmeticInstruction LOR = new LOR(); 157 public static final ArithmeticInstruction IXOR = new IXOR(); 158 public static final ArithmeticInstruction LXOR = new LXOR(); 159 public static final ConversionInstruction I2L = new I2L(); 160 public static final ConversionInstruction I2F = new I2F(); 161 public static final ConversionInstruction I2D = new I2D(); 162 public static final ConversionInstruction L2I = new L2I(); 163 public static final ConversionInstruction L2F = new L2F(); 164 public static final ConversionInstruction L2D = new L2D(); 165 public static final ConversionInstruction F2I = new F2I(); 166 public static final ConversionInstruction F2L = new F2L(); 167 public static final ConversionInstruction F2D = new F2D(); 168 public static final ConversionInstruction D2I = new D2I(); 169 public static final ConversionInstruction D2L = new D2L(); 170 public static final ConversionInstruction D2F = new D2F(); 171 public static final ConversionInstruction I2B = new I2B(); 172 public static final ConversionInstruction I2C = new I2C(); 173 public static final ConversionInstruction I2S = new I2S(); 174 public static final Instruction LCMP = new LCMP(); 175 public static final Instruction FCMPL = new FCMPL(); 176 public static final Instruction FCMPG = new FCMPG(); 177 public static final Instruction DCMPL = new DCMPL(); 178 public static final Instruction DCMPG = new DCMPG(); 179 public static final ReturnInstruction IRETURN = new IRETURN(); 180 public static final ReturnInstruction LRETURN = new LRETURN(); 181 public static final ReturnInstruction FRETURN = new FRETURN(); 182 public static final ReturnInstruction DRETURN = new DRETURN(); 183 public static final ReturnInstruction ARETURN = new ARETURN(); 184 public static final ReturnInstruction RETURN = new RETURN(); 185 public static final Instruction ARRAYLENGTH = new ARRAYLENGTH(); 186 public static final Instruction ATHROW = new ATHROW(); 187 public static final Instruction MONITORENTER = new MONITORENTER(); 188 public static final Instruction MONITOREXIT = new MONITOREXIT(); 189 190 /** You can use these constants in multiple places safely, if you can guarantee 191 * that you will never alter their internal values, e.g. call setIndex(). 192 */ 193 public static final LocalVariableInstruction THIS = new ALOAD(0); 194 public static final LocalVariableInstruction ALOAD_0 = THIS; 195 public static final LocalVariableInstruction ALOAD_1 = new ALOAD(1); 196 public static final LocalVariableInstruction ALOAD_2 = new ALOAD(2); 197 public static final LocalVariableInstruction ILOAD_0 = new ILOAD(0); 198 public static final LocalVariableInstruction ILOAD_1 = new ILOAD(1); 199 public static final LocalVariableInstruction ILOAD_2 = new ILOAD(2); 200 public static final LocalVariableInstruction ASTORE_0 = new ASTORE(0); 201 public static final LocalVariableInstruction ASTORE_1 = new ASTORE(1); 202 public static final LocalVariableInstruction ASTORE_2 = new ASTORE(2); 203 public static final LocalVariableInstruction ISTORE_0 = new ISTORE(0); 204 public static final LocalVariableInstruction ISTORE_1 = new ISTORE(1); 205 public static final LocalVariableInstruction ISTORE_2 = new ISTORE(2); 206 207 208 /** Get object via its opcode, for immutable instructions like 209 * branch instructions entries are set to null. 210 */ 211 public static final Instruction[] INSTRUCTIONS = new Instruction[256]; 212 213 /** Interfaces may have no static initializers, so we simulate this 214 * with an inner class. 215 */ 216 static final Clinit bla = new Clinit(); 217 218 static class Clinit { Clinit()219 Clinit() { 220 INSTRUCTIONS[Constants.NOP] = NOP; 221 INSTRUCTIONS[Constants.ACONST_NULL] = ACONST_NULL; 222 INSTRUCTIONS[Constants.ICONST_M1] = ICONST_M1; 223 INSTRUCTIONS[Constants.ICONST_0] = ICONST_0; 224 INSTRUCTIONS[Constants.ICONST_1] = ICONST_1; 225 INSTRUCTIONS[Constants.ICONST_2] = ICONST_2; 226 INSTRUCTIONS[Constants.ICONST_3] = ICONST_3; 227 INSTRUCTIONS[Constants.ICONST_4] = ICONST_4; 228 INSTRUCTIONS[Constants.ICONST_5] = ICONST_5; 229 INSTRUCTIONS[Constants.LCONST_0] = LCONST_0; 230 INSTRUCTIONS[Constants.LCONST_1] = LCONST_1; 231 INSTRUCTIONS[Constants.FCONST_0] = FCONST_0; 232 INSTRUCTIONS[Constants.FCONST_1] = FCONST_1; 233 INSTRUCTIONS[Constants.FCONST_2] = FCONST_2; 234 INSTRUCTIONS[Constants.DCONST_0] = DCONST_0; 235 INSTRUCTIONS[Constants.DCONST_1] = DCONST_1; 236 INSTRUCTIONS[Constants.IALOAD] = IALOAD; 237 INSTRUCTIONS[Constants.LALOAD] = LALOAD; 238 INSTRUCTIONS[Constants.FALOAD] = FALOAD; 239 INSTRUCTIONS[Constants.DALOAD] = DALOAD; 240 INSTRUCTIONS[Constants.AALOAD] = AALOAD; 241 INSTRUCTIONS[Constants.BALOAD] = BALOAD; 242 INSTRUCTIONS[Constants.CALOAD] = CALOAD; 243 INSTRUCTIONS[Constants.SALOAD] = SALOAD; 244 INSTRUCTIONS[Constants.IASTORE] = IASTORE; 245 INSTRUCTIONS[Constants.LASTORE] = LASTORE; 246 INSTRUCTIONS[Constants.FASTORE] = FASTORE; 247 INSTRUCTIONS[Constants.DASTORE] = DASTORE; 248 INSTRUCTIONS[Constants.AASTORE] = AASTORE; 249 INSTRUCTIONS[Constants.BASTORE] = BASTORE; 250 INSTRUCTIONS[Constants.CASTORE] = CASTORE; 251 INSTRUCTIONS[Constants.SASTORE] = SASTORE; 252 INSTRUCTIONS[Constants.POP] = POP; 253 INSTRUCTIONS[Constants.POP2] = POP2; 254 INSTRUCTIONS[Constants.DUP] = DUP; 255 INSTRUCTIONS[Constants.DUP_X1] = DUP_X1; 256 INSTRUCTIONS[Constants.DUP_X2] = DUP_X2; 257 INSTRUCTIONS[Constants.DUP2] = DUP2; 258 INSTRUCTIONS[Constants.DUP2_X1] = DUP2_X1; 259 INSTRUCTIONS[Constants.DUP2_X2] = DUP2_X2; 260 INSTRUCTIONS[Constants.SWAP] = SWAP; 261 INSTRUCTIONS[Constants.IADD] = IADD; 262 INSTRUCTIONS[Constants.LADD] = LADD; 263 INSTRUCTIONS[Constants.FADD] = FADD; 264 INSTRUCTIONS[Constants.DADD] = DADD; 265 INSTRUCTIONS[Constants.ISUB] = ISUB; 266 INSTRUCTIONS[Constants.LSUB] = LSUB; 267 INSTRUCTIONS[Constants.FSUB] = FSUB; 268 INSTRUCTIONS[Constants.DSUB] = DSUB; 269 INSTRUCTIONS[Constants.IMUL] = IMUL; 270 INSTRUCTIONS[Constants.LMUL] = LMUL; 271 INSTRUCTIONS[Constants.FMUL] = FMUL; 272 INSTRUCTIONS[Constants.DMUL] = DMUL; 273 INSTRUCTIONS[Constants.IDIV] = IDIV; 274 INSTRUCTIONS[Constants.LDIV] = LDIV; 275 INSTRUCTIONS[Constants.FDIV] = FDIV; 276 INSTRUCTIONS[Constants.DDIV] = DDIV; 277 INSTRUCTIONS[Constants.IREM] = IREM; 278 INSTRUCTIONS[Constants.LREM] = LREM; 279 INSTRUCTIONS[Constants.FREM] = FREM; 280 INSTRUCTIONS[Constants.DREM] = DREM; 281 INSTRUCTIONS[Constants.INEG] = INEG; 282 INSTRUCTIONS[Constants.LNEG] = LNEG; 283 INSTRUCTIONS[Constants.FNEG] = FNEG; 284 INSTRUCTIONS[Constants.DNEG] = DNEG; 285 INSTRUCTIONS[Constants.ISHL] = ISHL; 286 INSTRUCTIONS[Constants.LSHL] = LSHL; 287 INSTRUCTIONS[Constants.ISHR] = ISHR; 288 INSTRUCTIONS[Constants.LSHR] = LSHR; 289 INSTRUCTIONS[Constants.IUSHR] = IUSHR; 290 INSTRUCTIONS[Constants.LUSHR] = LUSHR; 291 INSTRUCTIONS[Constants.IAND] = IAND; 292 INSTRUCTIONS[Constants.LAND] = LAND; 293 INSTRUCTIONS[Constants.IOR] = IOR; 294 INSTRUCTIONS[Constants.LOR] = LOR; 295 INSTRUCTIONS[Constants.IXOR] = IXOR; 296 INSTRUCTIONS[Constants.LXOR] = LXOR; 297 INSTRUCTIONS[Constants.I2L] = I2L; 298 INSTRUCTIONS[Constants.I2F] = I2F; 299 INSTRUCTIONS[Constants.I2D] = I2D; 300 INSTRUCTIONS[Constants.L2I] = L2I; 301 INSTRUCTIONS[Constants.L2F] = L2F; 302 INSTRUCTIONS[Constants.L2D] = L2D; 303 INSTRUCTIONS[Constants.F2I] = F2I; 304 INSTRUCTIONS[Constants.F2L] = F2L; 305 INSTRUCTIONS[Constants.F2D] = F2D; 306 INSTRUCTIONS[Constants.D2I] = D2I; 307 INSTRUCTIONS[Constants.D2L] = D2L; 308 INSTRUCTIONS[Constants.D2F] = D2F; 309 INSTRUCTIONS[Constants.I2B] = I2B; 310 INSTRUCTIONS[Constants.I2C] = I2C; 311 INSTRUCTIONS[Constants.I2S] = I2S; 312 INSTRUCTIONS[Constants.LCMP] = LCMP; 313 INSTRUCTIONS[Constants.FCMPL] = FCMPL; 314 INSTRUCTIONS[Constants.FCMPG] = FCMPG; 315 INSTRUCTIONS[Constants.DCMPL] = DCMPL; 316 INSTRUCTIONS[Constants.DCMPG] = DCMPG; 317 INSTRUCTIONS[Constants.IRETURN] = IRETURN; 318 INSTRUCTIONS[Constants.LRETURN] = LRETURN; 319 INSTRUCTIONS[Constants.FRETURN] = FRETURN; 320 INSTRUCTIONS[Constants.DRETURN] = DRETURN; 321 INSTRUCTIONS[Constants.ARETURN] = ARETURN; 322 INSTRUCTIONS[Constants.RETURN] = RETURN; 323 INSTRUCTIONS[Constants.ARRAYLENGTH] = ARRAYLENGTH; 324 INSTRUCTIONS[Constants.ATHROW] = ATHROW; 325 INSTRUCTIONS[Constants.MONITORENTER] = MONITORENTER; 326 INSTRUCTIONS[Constants.MONITOREXIT] = MONITOREXIT; 327 } 328 } 329 } 330