00001 package de.fub.bytecode.generic; 00002 00003 import de.fub.bytecode.Constants; 00004 00005 /** 00006 * This interface contains shareable instruction objects. 00007 * 00008 * In order to save memory you can use some instructions multiply, 00009 * since they have an immutable state and are directly derived from 00010 * Instruction. I.e. they have no instance fields that could be 00011 * changed. Since some of these instructions like ICONST_0 occur 00012 * very frequently this can save a lot of time and space. This 00013 * feature is an adaptation of the FlyWeight design pattern, we 00014 * just use an array instead of a factory. 00015 * 00016 * The Instructions can also accessed directly under their names, so 00017 * it's possible to write il.append(Instruction.ICONST_0); 00018 * 00019 * @version $Id: InstructionConstants.java,v 1.1.1.1 2002/01/24 03:41:40 pserver Exp $ 00020 * @author <A HREF="http://www.inf.fu-berlin.de/~dahm">M. Dahm</A> 00021 */ 00022 public interface InstructionConstants { 00023 /** Predefined instruction objects 00024 */ 00025 public static final Instruction NOP = new NOP(); 00026 public static final Instruction ACONST_NULL = new ACONST_NULL(); 00027 public static final Instruction ICONST_M1 = new ICONST(-1); 00028 public static final Instruction ICONST_0 = new ICONST(0); 00029 public static final Instruction ICONST_1 = new ICONST(1); 00030 public static final Instruction ICONST_2 = new ICONST(2); 00031 public static final Instruction ICONST_3 = new ICONST(3); 00032 public static final Instruction ICONST_4 = new ICONST(4); 00033 public static final Instruction ICONST_5 = new ICONST(5); 00034 public static final Instruction LCONST_0 = new LCONST(0); 00035 public static final Instruction LCONST_1 = new LCONST(1); 00036 public static final Instruction FCONST_0 = new FCONST(0); 00037 public static final Instruction FCONST_1 = new FCONST(1); 00038 public static final Instruction FCONST_2 = new FCONST(2); 00039 public static final Instruction DCONST_0 = new DCONST(0); 00040 public static final Instruction DCONST_1 = new DCONST(1); 00041 public static final ArrayInstruction IALOAD = new IALOAD(); 00042 public static final ArrayInstruction LALOAD = new LALOAD(); 00043 public static final ArrayInstruction FALOAD = new FALOAD(); 00044 public static final ArrayInstruction DALOAD = new DALOAD(); 00045 public static final ArrayInstruction AALOAD = new AALOAD(); 00046 public static final ArrayInstruction BALOAD = new BALOAD(); 00047 public static final ArrayInstruction CALOAD = new CALOAD(); 00048 public static final ArrayInstruction SALOAD = new SALOAD(); 00049 public static final ArrayInstruction IASTORE = new IASTORE(); 00050 public static final ArrayInstruction LASTORE = new LASTORE(); 00051 public static final ArrayInstruction FASTORE = new FASTORE(); 00052 public static final ArrayInstruction DASTORE = new DASTORE(); 00053 public static final ArrayInstruction AASTORE = new AASTORE(); 00054 public static final ArrayInstruction BASTORE = new BASTORE(); 00055 public static final ArrayInstruction CASTORE = new CASTORE(); 00056 public static final ArrayInstruction SASTORE = new SASTORE(); 00057 public static final StackInstruction POP = new POP(); 00058 public static final StackInstruction POP2 = new POP2(); 00059 public static final StackInstruction DUP = new DUP(); 00060 public static final StackInstruction DUP_X1 = new DUP_X1(); 00061 public static final StackInstruction DUP_X2 = new DUP_X2(); 00062 public static final StackInstruction DUP2 = new DUP2(); 00063 public static final StackInstruction DUP2_X1 = new DUP2_X1(); 00064 public static final StackInstruction DUP2_X2 = new DUP2_X2(); 00065 public static final StackInstruction SWAP = new SWAP(); 00066 public static final ArithmeticInstruction IADD = new IADD(); 00067 public static final ArithmeticInstruction LADD = new LADD(); 00068 public static final ArithmeticInstruction FADD = new FADD(); 00069 public static final ArithmeticInstruction DADD = new DADD(); 00070 public static final ArithmeticInstruction ISUB = new ISUB(); 00071 public static final ArithmeticInstruction LSUB = new LSUB(); 00072 public static final ArithmeticInstruction FSUB = new FSUB(); 00073 public static final ArithmeticInstruction DSUB = new DSUB(); 00074 public static final ArithmeticInstruction IMUL = new IMUL(); 00075 public static final ArithmeticInstruction LMUL = new LMUL(); 00076 public static final ArithmeticInstruction FMUL = new FMUL(); 00077 public static final ArithmeticInstruction DMUL = new DMUL(); 00078 public static final ArithmeticInstruction IDIV = new IDIV(); 00079 public static final ArithmeticInstruction LDIV = new LDIV(); 00080 public static final ArithmeticInstruction FDIV = new FDIV(); 00081 public static final ArithmeticInstruction DDIV = new DDIV(); 00082 public static final ArithmeticInstruction IREM = new IREM(); 00083 public static final ArithmeticInstruction LREM = new LREM(); 00084 public static final ArithmeticInstruction FREM = new FREM(); 00085 public static final ArithmeticInstruction DREM = new DREM(); 00086 public static final ArithmeticInstruction INEG = new INEG(); 00087 public static final ArithmeticInstruction LNEG = new LNEG(); 00088 public static final ArithmeticInstruction FNEG = new FNEG(); 00089 public static final ArithmeticInstruction DNEG = new DNEG(); 00090 public static final ArithmeticInstruction ISHL = new ISHL(); 00091 public static final ArithmeticInstruction LSHL = new LSHL(); 00092 public static final ArithmeticInstruction ISHR = new ISHR(); 00093 public static final ArithmeticInstruction LSHR = new LSHR(); 00094 public static final ArithmeticInstruction IUSHR = new IUSHR(); 00095 public static final ArithmeticInstruction LUSHR = new LUSHR(); 00096 public static final ArithmeticInstruction IAND = new IAND(); 00097 public static final ArithmeticInstruction LAND = new LAND(); 00098 public static final ArithmeticInstruction IOR = new IOR(); 00099 public static final ArithmeticInstruction LOR = new LOR(); 00100 public static final ArithmeticInstruction IXOR = new IXOR(); 00101 public static final ArithmeticInstruction LXOR = new LXOR(); 00102 public static final ConversionInstruction I2L = new I2L(); 00103 public static final ConversionInstruction I2F = new I2F(); 00104 public static final ConversionInstruction I2D = new I2D(); 00105 public static final ConversionInstruction L2I = new L2I(); 00106 public static final ConversionInstruction L2F = new L2F(); 00107 public static final ConversionInstruction L2D = new L2D(); 00108 public static final ConversionInstruction F2I = new F2I(); 00109 public static final ConversionInstruction F2L = new F2L(); 00110 public static final ConversionInstruction F2D = new F2D(); 00111 public static final ConversionInstruction D2I = new D2I(); 00112 public static final ConversionInstruction D2L = new D2L(); 00113 public static final ConversionInstruction D2F = new D2F(); 00114 public static final ConversionInstruction I2B = new I2B(); 00115 public static final ConversionInstruction I2C = new I2C(); 00116 public static final ConversionInstruction I2S = new I2S(); 00117 public static final Instruction LCMP = new LCMP(); 00118 public static final Instruction FCMPL = new FCMPL(); 00119 public static final Instruction FCMPG = new FCMPG(); 00120 public static final Instruction DCMPL = new DCMPL(); 00121 public static final Instruction DCMPG = new DCMPG(); 00122 public static final ReturnInstruction IRETURN = new IRETURN(); 00123 public static final ReturnInstruction LRETURN = new LRETURN(); 00124 public static final ReturnInstruction FRETURN = new FRETURN(); 00125 public static final ReturnInstruction DRETURN = new DRETURN(); 00126 public static final ReturnInstruction ARETURN = new ARETURN(); 00127 public static final ReturnInstruction RETURN = new RETURN(); 00128 public static final Instruction ARRAYLENGTH = new ARRAYLENGTH(); 00129 public static final Instruction ATHROW = new ATHROW(); 00130 public static final Instruction MONITORENTER = new MONITORENTER(); 00131 public static final Instruction MONITOREXIT = new MONITOREXIT(); 00132 00133 /** You can use these constants in multiple places safely, if you can guarantee 00134 * that you will never alter their internal values, e.g. call setIndex(). 00135 */ 00136 public static final LocalVariableInstruction THIS = new ALOAD(0); 00137 public static final LocalVariableInstruction ALOAD_0 = THIS; 00138 public static final LocalVariableInstruction ALOAD_1 = new ALOAD(1); 00139 public static final LocalVariableInstruction ALOAD_2 = new ALOAD(2); 00140 public static final LocalVariableInstruction ILOAD_0 = new ILOAD(0); 00141 public static final LocalVariableInstruction ILOAD_1 = new ILOAD(1); 00142 public static final LocalVariableInstruction ILOAD_2 = new ILOAD(2); 00143 public static final LocalVariableInstruction ASTORE_0 = new ASTORE(0); 00144 public static final LocalVariableInstruction ASTORE_1 = new ASTORE(1); 00145 public static final LocalVariableInstruction ASTORE_2 = new ASTORE(2); 00146 public static final LocalVariableInstruction ISTORE_0 = new ISTORE(0); 00147 public static final LocalVariableInstruction ISTORE_1 = new ISTORE(1); 00148 public static final LocalVariableInstruction ISTORE_2 = new ISTORE(2); 00149 00150 00151 /** Get object via its opcode, for immutable instructions like 00152 * branch instructions entries are set to null. 00153 */ 00154 public static final Instruction[] INSTRUCTIONS = new Instruction[256]; 00155 00156 /** Interfaces may have no static initializers, so we simulate this 00157 * with an inner class. 00158 */ 00159 static final Clinit bla = new Clinit(); 00160 00161 static class Clinit { 00162 Clinit() { 00163 INSTRUCTIONS[Constants.NOP] = NOP; 00164 INSTRUCTIONS[Constants.ACONST_NULL] = ACONST_NULL; 00165 INSTRUCTIONS[Constants.ICONST_M1] = ICONST_M1; 00166 INSTRUCTIONS[Constants.ICONST_0] = ICONST_0; 00167 INSTRUCTIONS[Constants.ICONST_1] = ICONST_1; 00168 INSTRUCTIONS[Constants.ICONST_2] = ICONST_2; 00169 INSTRUCTIONS[Constants.ICONST_3] = ICONST_3; 00170 INSTRUCTIONS[Constants.ICONST_4] = ICONST_4; 00171 INSTRUCTIONS[Constants.ICONST_5] = ICONST_5; 00172 INSTRUCTIONS[Constants.LCONST_0] = LCONST_0; 00173 INSTRUCTIONS[Constants.LCONST_1] = LCONST_1; 00174 INSTRUCTIONS[Constants.FCONST_0] = FCONST_0; 00175 INSTRUCTIONS[Constants.FCONST_1] = FCONST_1; 00176 INSTRUCTIONS[Constants.FCONST_2] = FCONST_2; 00177 INSTRUCTIONS[Constants.DCONST_0] = DCONST_0; 00178 INSTRUCTIONS[Constants.DCONST_1] = DCONST_1; 00179 INSTRUCTIONS[Constants.IALOAD] = IALOAD; 00180 INSTRUCTIONS[Constants.LALOAD] = LALOAD; 00181 INSTRUCTIONS[Constants.FALOAD] = FALOAD; 00182 INSTRUCTIONS[Constants.DALOAD] = DALOAD; 00183 INSTRUCTIONS[Constants.AALOAD] = AALOAD; 00184 INSTRUCTIONS[Constants.BALOAD] = BALOAD; 00185 INSTRUCTIONS[Constants.CALOAD] = CALOAD; 00186 INSTRUCTIONS[Constants.SALOAD] = SALOAD; 00187 INSTRUCTIONS[Constants.IASTORE] = IASTORE; 00188 INSTRUCTIONS[Constants.LASTORE] = LASTORE; 00189 INSTRUCTIONS[Constants.FASTORE] = FASTORE; 00190 INSTRUCTIONS[Constants.DASTORE] = DASTORE; 00191 INSTRUCTIONS[Constants.AASTORE] = AASTORE; 00192 INSTRUCTIONS[Constants.BASTORE] = BASTORE; 00193 INSTRUCTIONS[Constants.CASTORE] = CASTORE; 00194 INSTRUCTIONS[Constants.SASTORE] = SASTORE; 00195 INSTRUCTIONS[Constants.POP] = POP; 00196 INSTRUCTIONS[Constants.POP2] = POP2; 00197 INSTRUCTIONS[Constants.DUP] = DUP; 00198 INSTRUCTIONS[Constants.DUP_X1] = DUP_X1; 00199 INSTRUCTIONS[Constants.DUP_X2] = DUP_X2; 00200 INSTRUCTIONS[Constants.DUP2] = DUP2; 00201 INSTRUCTIONS[Constants.DUP2_X1] = DUP2_X1; 00202 INSTRUCTIONS[Constants.DUP2_X2] = DUP2_X2; 00203 INSTRUCTIONS[Constants.SWAP] = SWAP; 00204 INSTRUCTIONS[Constants.IADD] = IADD; 00205 INSTRUCTIONS[Constants.LADD] = LADD; 00206 INSTRUCTIONS[Constants.FADD] = FADD; 00207 INSTRUCTIONS[Constants.DADD] = DADD; 00208 INSTRUCTIONS[Constants.ISUB] = ISUB; 00209 INSTRUCTIONS[Constants.LSUB] = LSUB; 00210 INSTRUCTIONS[Constants.FSUB] = FSUB; 00211 INSTRUCTIONS[Constants.DSUB] = DSUB; 00212 INSTRUCTIONS[Constants.IMUL] = IMUL; 00213 INSTRUCTIONS[Constants.LMUL] = LMUL; 00214 INSTRUCTIONS[Constants.FMUL] = FMUL; 00215 INSTRUCTIONS[Constants.DMUL] = DMUL; 00216 INSTRUCTIONS[Constants.IDIV] = IDIV; 00217 INSTRUCTIONS[Constants.LDIV] = LDIV; 00218 INSTRUCTIONS[Constants.FDIV] = FDIV; 00219 INSTRUCTIONS[Constants.DDIV] = DDIV; 00220 INSTRUCTIONS[Constants.IREM] = IREM; 00221 INSTRUCTIONS[Constants.LREM] = LREM; 00222 INSTRUCTIONS[Constants.FREM] = FREM; 00223 INSTRUCTIONS[Constants.DREM] = DREM; 00224 INSTRUCTIONS[Constants.INEG] = INEG; 00225 INSTRUCTIONS[Constants.LNEG] = LNEG; 00226 INSTRUCTIONS[Constants.FNEG] = FNEG; 00227 INSTRUCTIONS[Constants.DNEG] = DNEG; 00228 INSTRUCTIONS[Constants.ISHL] = ISHL; 00229 INSTRUCTIONS[Constants.LSHL] = LSHL; 00230 INSTRUCTIONS[Constants.ISHR] = ISHR; 00231 INSTRUCTIONS[Constants.LSHR] = LSHR; 00232 INSTRUCTIONS[Constants.IUSHR] = IUSHR; 00233 INSTRUCTIONS[Constants.LUSHR] = LUSHR; 00234 INSTRUCTIONS[Constants.IAND] = IAND; 00235 INSTRUCTIONS[Constants.LAND] = LAND; 00236 INSTRUCTIONS[Constants.IOR] = IOR; 00237 INSTRUCTIONS[Constants.LOR] = LOR; 00238 INSTRUCTIONS[Constants.IXOR] = IXOR; 00239 INSTRUCTIONS[Constants.LXOR] = LXOR; 00240 INSTRUCTIONS[Constants.I2L] = I2L; 00241 INSTRUCTIONS[Constants.I2F] = I2F; 00242 INSTRUCTIONS[Constants.I2D] = I2D; 00243 INSTRUCTIONS[Constants.L2I] = L2I; 00244 INSTRUCTIONS[Constants.L2F] = L2F; 00245 INSTRUCTIONS[Constants.L2D] = L2D; 00246 INSTRUCTIONS[Constants.F2I] = F2I; 00247 INSTRUCTIONS[Constants.F2L] = F2L; 00248 INSTRUCTIONS[Constants.F2D] = F2D; 00249 INSTRUCTIONS[Constants.D2I] = D2I; 00250 INSTRUCTIONS[Constants.D2L] = D2L; 00251 INSTRUCTIONS[Constants.D2F] = D2F; 00252 INSTRUCTIONS[Constants.I2B] = I2B; 00253 INSTRUCTIONS[Constants.I2C] = I2C; 00254 INSTRUCTIONS[Constants.I2S] = I2S; 00255 INSTRUCTIONS[Constants.LCMP] = LCMP; 00256 INSTRUCTIONS[Constants.FCMPL] = FCMPL; 00257 INSTRUCTIONS[Constants.FCMPG] = FCMPG; 00258 INSTRUCTIONS[Constants.DCMPL] = DCMPL; 00259 INSTRUCTIONS[Constants.DCMPG] = DCMPG; 00260 INSTRUCTIONS[Constants.IRETURN] = IRETURN; 00261 INSTRUCTIONS[Constants.LRETURN] = LRETURN; 00262 INSTRUCTIONS[Constants.FRETURN] = FRETURN; 00263 INSTRUCTIONS[Constants.DRETURN] = DRETURN; 00264 INSTRUCTIONS[Constants.ARETURN] = ARETURN; 00265 INSTRUCTIONS[Constants.RETURN] = RETURN; 00266 INSTRUCTIONS[Constants.ARRAYLENGTH] = ARRAYLENGTH; 00267 INSTRUCTIONS[Constants.ATHROW] = ATHROW; 00268 INSTRUCTIONS[Constants.MONITORENTER] = MONITORENTER; 00269 INSTRUCTIONS[Constants.MONITOREXIT] = MONITOREXIT; 00270 } 00271 } 00272 }
1.2.10 written by Dimitri van Heesch,
© 1997-2001