diff options
Diffstat (limited to 'plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java')
| -rw-r--r-- | plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java | 527 |
1 files changed, 527 insertions, 0 deletions
diff --git a/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java new file mode 100644 index 000000000000..1af23a4cdb27 --- /dev/null +++ b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java @@ -0,0 +1,527 @@ +/* + * Copyright 2000-2014 JetBrains s.r.o. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.jetbrains.java.decompiler.code.interpreter; + +import org.jetbrains.java.decompiler.code.CodeConstants; +import org.jetbrains.java.decompiler.code.Instruction; +import org.jetbrains.java.decompiler.struct.consts.ConstantPool; +import org.jetbrains.java.decompiler.struct.consts.LinkConstant; +import org.jetbrains.java.decompiler.struct.consts.PrimitiveConstant; +import org.jetbrains.java.decompiler.struct.gen.DataPoint; +import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor; +import org.jetbrains.java.decompiler.struct.gen.VarType; +import org.jetbrains.java.decompiler.util.ListStack; + +public class InstructionImpact { + + // {read, write} + private static final int[][][] stack_impact = { + + {null, null}, // public final static int opc_nop = 0; + null, // public final static int opc_aconst_null = 1; + null, // public final static int opc_iconst_m1 = 2; + null, // public final static int opc_iconst_0 = 3; + null, // public final static int opc_iconst_1 = 4; + null, // public final static int opc_iconst_2 = 5; + null, // public final static int opc_iconst_3 = 6; + null, // public final static int opc_iconst_4 = 7; + null, // public final static int opc_iconst_5 = 8; + {null, {CodeConstants.TYPE_LONG}}, // public final static int opc_lconst_0 = 9; + {null, {CodeConstants.TYPE_LONG}}, // public final static int opc_lconst_1 = 10; + {null, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_fconst_0 = 11; + {null, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_fconst_1 = 12; + {null, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_fconst_2 = 13; + {null, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_dconst_0 = 14; + {null, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_dconst_1 = 15; + {null, {CodeConstants.TYPE_INT}}, // public final static int opc_bipush = 16; + {null, {CodeConstants.TYPE_INT}}, // public final static int opc_sipush = 17; + null, // public final static int opc_ldc = 18; + null, // public final static int opc_ldc_w = 19; + null, // public final static int opc_ldc2_w = 20; + {null, {CodeConstants.TYPE_INT}}, // public final static int opc_iload = 21; + {null, {CodeConstants.TYPE_LONG}}, // public final static int opc_lload = 22; + {null, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_fload = 23; + {null, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_dload = 24; + null, // public final static int opc_aload = 25; + null, // public final static int opc_iload_0 = 26; + null, // public final static int opc_iload_1 = 27; + null, // public final static int opc_iload_2 = 28; + null, // public final static int opc_iload_3 = 29; + null, // public final static int opc_lload_0 = 30; + null, // public final static int opc_lload_1 = 31; + null, // public final static int opc_lload_2 = 32; + null, // public final static int opc_lload_3 = 33; + null, // public final static int opc_fload_0 = 34; + null, // public final static int opc_fload_1 = 35; + null, // public final static int opc_fload_2 = 36; + null, // public final static int opc_fload_3 = 37; + null, // public final static int opc_dload_0 = 38; + null, // public final static int opc_dload_1 = 39; + null, // public final static int opc_dload_2 = 40; + null, // public final static int opc_dload_3 = 41; + null, // public final static int opc_aload_0 = 42; + null, // public final static int opc_aload_1 = 43; + null, // public final static int opc_aload_2 = 44; + null, // public final static int opc_aload_3 = 45; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_iaload = 46; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_laload = 47; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_faload = 48; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_daload = 49; + null, // public final static int opc_aaload = 50; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_baload = 51; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_caload = 52; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_saload = 53; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_istore = 54; + {{CodeConstants.TYPE_LONG}, null}, // public final static int opc_lstore = 55; + {{CodeConstants.TYPE_FLOAT}, null}, // public final static int opc_fstore = 56; + {{CodeConstants.TYPE_DOUBLE}, null}, // public final static int opc_dstore = 57; + null, // public final static int opc_astore = 58; + null, // public final static int opc_istore_0 = 59; + null, // public final static int opc_istore_1 = 60; + null, // public final static int opc_istore_2 = 61; + null, // public final static int opc_istore_3 = 62; + null, // public final static int opc_lstore_0 = 63; + null, // public final static int opc_lstore_1 = 64; + null, // public final static int opc_lstore_2 = 65; + null, // public final static int opc_lstore_3 = 66; + null, // public final static int opc_fstore_0 = 67; + null, // public final static int opc_fstore_1 = 68; + null, // public final static int opc_fstore_2 = 69; + null, // public final static int opc_fstore_3 = 70; + null, // public final static int opc_dstore_0 = 71; + null, // public final static int opc_dstore_1 = 72; + null, // public final static int opc_dstore_2 = 73; + null, // public final static int opc_dstore_3 = 74; + null, // public final static int opc_astore_0 = 75; + null, // public final static int opc_astore_1 = 76; + null, // public final static int opc_astore_2 = 77; + null, // public final static int opc_astore_3 = 78; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, + // public final static int opc_iastore = 79; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_LONG}, null}, + // public final static int opc_lastore = 80; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_FLOAT}, null}, + // public final static int opc_fastore = 81; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_DOUBLE}, null}, + // public final static int opc_dastore = 82; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_OBJECT}, null}, + // public final static int opc_aastore = 83; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, + // public final static int opc_bastore = 84; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, + // public final static int opc_castore = 85; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, + // public final static int opc_sastore = 86; + {{CodeConstants.TYPE_ANY}, null}, // public final static int opc_pop = 87; + {{CodeConstants.TYPE_ANY, CodeConstants.TYPE_ANY}, null}, // public final static int opc_pop2 = 88; + null, // public final static int opc_dup = 89; + null, // public final static int opc_dup_x1 = 90; + null, // public final static int opc_dup_x2 = 91; + null, // public final static int opc_dup2 = 92; + null, // public final static int opc_dup2_x1 = 93; + null, // public final static int opc_dup2_x2 = 94; + null, // public final static int opc_swap = 95; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_iadd = 96; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_ladd = 97; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_fadd = 98; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_dadd = 99; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_isub = 100; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lsub = 101; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_fsub = 102; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_dsub = 103; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_imul = 104; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lmul = 105; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_fmul = 106; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_dmul = 107; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_idiv = 108; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_ldiv = 109; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_fdiv = 110; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_ddiv = 111; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_irem = 112; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lrem = 113; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, + // public final static int opc_frem = 114; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, + // public final static int opc_drem = 115; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, // public final static int opc_ineg = 116; + {{CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, // public final static int opc_lneg = 117; + {{CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_fneg = 118; + {{CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_dneg = 119; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_ishl = 120; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lshl = 121; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_ishr = 122; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lshr = 123; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_iushr = 124; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lushr = 125; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_iand = 126; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_land = 127; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_ior = 128; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lor = 129; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_ixor = 130; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_LONG}}, + // public final static int opc_lxor = 131; + {null, null}, // public final static int opc_iinc = 132; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_LONG}}, // public final static int opc_i2l = 133; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_i2f = 134; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_i2d = 135; + {{CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_INT}}, // public final static int opc_l2i = 136; + {{CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_l2f = 137; + {{CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_l2d = 138; + {{CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_INT}}, // public final static int opc_f2i = 139; + {{CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_LONG}}, // public final static int opc_f2l = 140; + {{CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_DOUBLE}}, // public final static int opc_f2d = 141; + {{CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_INT}}, // public final static int opc_d2i = 142; + {{CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_LONG}}, // public final static int opc_d2l = 143; + {{CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_FLOAT}}, // public final static int opc_d2f = 144; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, // public final static int opc_i2b = 145; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, // public final static int opc_i2c = 146; + {{CodeConstants.TYPE_INT}, {CodeConstants.TYPE_INT}}, // public final static int opc_i2s = 147; + {{CodeConstants.TYPE_LONG, CodeConstants.TYPE_LONG}, {CodeConstants.TYPE_INT}}, + // public final static int opc_lcmp = 148; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_fcmpl = 149; + {{CodeConstants.TYPE_FLOAT, CodeConstants.TYPE_FLOAT}, {CodeConstants.TYPE_INT}}, + // public final static int opc_fcmpg = 150; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_INT}}, + // public final static int opc_dcmpl = 151; + {{CodeConstants.TYPE_DOUBLE, CodeConstants.TYPE_DOUBLE}, {CodeConstants.TYPE_INT}}, + // public final static int opc_dcmpg = 152; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ifeq = 153; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ifne = 154; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_iflt = 155; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ifge = 156; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ifgt = 157; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ifle = 158; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmpeq = 159; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmpne = 160; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmplt = 161; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmpge = 162; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmpgt = 163; + {{CodeConstants.TYPE_INT, CodeConstants.TYPE_INT}, null}, // public final static int opc_if_icmple = 164; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_OBJECT}, null}, + // public final static int opc_if_acmpeq = 165; + {{CodeConstants.TYPE_OBJECT, CodeConstants.TYPE_OBJECT}, null}, + // public final static int opc_if_acmpne = 166; + {null, null}, // public final static int opc_goto = 167; + {null, {CodeConstants.TYPE_ADDRESS}}, // public final static int opc_jsr = 168; + {null, null}, // public final static int opc_ret = 169; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_tableswitch = 170; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_lookupswitch = 171; + {{CodeConstants.TYPE_INT}, null}, // public final static int opc_ireturn = 172; + {{CodeConstants.TYPE_LONG}, null}, // public final static int opc_lreturn = 173; + {{CodeConstants.TYPE_FLOAT}, null}, // public final static int opc_freturn = 174; + {{CodeConstants.TYPE_DOUBLE}, null}, // public final static int opc_dreturn = 175; + {{CodeConstants.TYPE_OBJECT}, null}, // public final static int opc_areturn = 176; + {null, null}, // public final static int opc_return = 177; + null, // public final static int opc_getstatic = 178; + null, // public final static int opc_putstatic = 179; + null, // public final static int opc_getfield = 180; + null, // public final static int opc_putfield = 181; + null, // public final static int opc_invokevirtual = 182; + null, // public final static int opc_invokespecial = 183; + null, // public final static int opc_invokestatic = 184; + null, // public final static int opc_invokeinterface = 185; + null, // public final static int opc_xxxunusedxxx = 186; + null, // public final static int opc_new = 187; + null, // public final static int opc_newarray = 188; + null, // public final static int opc_anewarray = 189; + {{CodeConstants.TYPE_OBJECT}, {CodeConstants.TYPE_INT}}, // public final static int opc_arraylength = 190; + null, + // public final static int opc_athrow = 191; + null, + // public final static int opc_checkcast = 192; + null, + // public final static int opc_instanceof = 193; + {{CodeConstants.TYPE_OBJECT}, null}, // public final static int opc_monitorenter = 194; + {{CodeConstants.TYPE_OBJECT}, null}, // public final static int opc_monitorexit = 195; + null, + // public final static int opc_wide = 196; + null, + // public final static int opc_multianewarray = 197; + {{CodeConstants.TYPE_OBJECT}, null}, // public final static int opc_ifnull = 198; + {{CodeConstants.TYPE_OBJECT}, null}, // public final static int opc_ifnonnull = 199; + {null, null}, // public final static int opc_goto_w = 200; + {null, {CodeConstants.TYPE_ADDRESS}}, // public final static int opc_jsr_w = 201; + }; + + private static final int[] arr_type = new int[]{ + CodeConstants.TYPE_BOOLEAN, + CodeConstants.TYPE_CHAR, + CodeConstants.TYPE_FLOAT, + CodeConstants.TYPE_DOUBLE, + CodeConstants.TYPE_BYTE, + CodeConstants.TYPE_SHORT, + CodeConstants.TYPE_INT, + CodeConstants.TYPE_LONG + }; + + + // Sonderbehandlung + // null, // public final static int opc_aconst_null = 1; + // null, // public final static int opc_ldc = 18; + // null, // public final static int opc_ldc_w = 19; + // null, // public final static int opc_ldc2_w = 20; + // null, // public final static int opc_aload = 25; + // null, // public final static int opc_aaload = 50; + // null, // public final static int opc_astore = 58; + // null, // public final static int opc_dup = 89; + // null, // public final static int opc_dup_x1 = 90; + // null, // public final static int opc_dup_x2 = 91; + // null, // public final static int opc_dup2 = 92; + // null, // public final static int opc_dup2_x1 = 93; + // null, // public final static int opc_dup2_x2 = 94; + // null, // public final static int opc_swap = 95; + // null, // public final static int opc_getstatic = 178; + // null, // public final static int opc_putstatic = 179; + // null, // public final static int opc_getfield = 180; + // null, // public final static int opc_putfield = 181; + // null, // public final static int opc_invokevirtual = 182; + // null, // public final static int opc_invokespecial = 183; + // null, // public final static int opc_invokestatic = 184; + // null, // public final static int opc_invokeinterface = 185; + // null, // public final static int opc_new = 187; + // null, // public final static int opc_newarray = 188; + // null, // public final static int opc_anewarray = 189; + // null, // public final static int opc_athrow = 191; + // null, // public final static int opc_checkcast = 192; + // null, // public final static int opc_instanceof = 193; + // null, // public final static int opc_multianewarray = 197; + + + public static void stepTypes(DataPoint data, Instruction instr, ConstantPool pool) { + + ListStack<VarType> stack = data.getStack(); + int[][] arr = stack_impact[instr.opcode]; + + if (arr != null) { + // simple types only + + int[] read = arr[0]; + int[] write = arr[1]; + + if (read != null) { + int depth = 0; + for (int i = 0; i < read.length; i++) { + int type = read[i]; + depth++; + if (type == CodeConstants.TYPE_LONG || + type == CodeConstants.TYPE_DOUBLE) { + depth++; + } + } + + stack.removeMultiple(depth); + } + + if (write != null) { + for (int i = 0; i < write.length; i++) { + int type = write[i]; + stack.push(new VarType(type)); + if (type == CodeConstants.TYPE_LONG || + type == CodeConstants.TYPE_DOUBLE) { + stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY)); + } + } + } + } + else { + // Sonderbehandlung + processSpecialInstructions(data, instr, pool); + } + } + + private static void processSpecialInstructions(DataPoint data, Instruction instr, ConstantPool pool) { + + VarType var1; + PrimitiveConstant cn; + LinkConstant ck; + + ListStack<VarType> stack = data.getStack(); + + switch (instr.opcode) { + case CodeConstants.opc_aconst_null: + stack.push(new VarType(CodeConstants.TYPE_NULL, 0, null)); + break; + case CodeConstants.opc_ldc: + case CodeConstants.opc_ldc_w: + case CodeConstants.opc_ldc2_w: + cn = pool.getPrimitiveConstant(instr.getOperand(0)); + switch (cn.type) { + case CodeConstants.CONSTANT_Integer: + stack.push(new VarType(CodeConstants.TYPE_INT)); + break; + case CodeConstants.CONSTANT_Float: + stack.push(new VarType(CodeConstants.TYPE_FLOAT)); + break; + case CodeConstants.CONSTANT_Long: + stack.push(new VarType(CodeConstants.TYPE_LONG)); + stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY)); + break; + case CodeConstants.CONSTANT_Double: + stack.push(new VarType(CodeConstants.TYPE_DOUBLE)); + stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY)); + break; + case CodeConstants.CONSTANT_String: + stack.push(new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/String")); + break; + case CodeConstants.CONSTANT_Class: + stack.push(new VarType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Class")); + break; + } + break; + case CodeConstants.opc_aload: + var1 = data.getVariable(instr.getOperand(0)); + if (var1 != null) { + stack.push(var1); + } + else { + stack.push(new VarType(CodeConstants.TYPE_OBJECT, 0, null)); + } + break; + case CodeConstants.opc_aaload: + var1 = stack.pop(2); + stack.push(new VarType(var1.type, var1.arraydim - 1, var1.value)); + break; + case CodeConstants.opc_astore: + data.setVariable(instr.getOperand(0), stack.pop()); + break; + case CodeConstants.opc_dup: + case CodeConstants.opc_dup_x1: + case CodeConstants.opc_dup_x2: + int depth1 = 88 - instr.opcode; + stack.insertByOffset(depth1, stack.getByOffset(-1).copy()); + break; + case CodeConstants.opc_dup2: + case CodeConstants.opc_dup2_x1: + case CodeConstants.opc_dup2_x2: + int depth2 = 90 - instr.opcode; + stack.insertByOffset(depth2, stack.getByOffset(-2).copy()); + stack.insertByOffset(depth2, stack.getByOffset(-1).copy()); + break; + case CodeConstants.opc_swap: + var1 = stack.pop(); + stack.insertByOffset(-1, var1); + break; + case CodeConstants.opc_getfield: + stack.pop(); + case CodeConstants.opc_getstatic: + ck = pool.getLinkConstant(instr.getOperand(0)); + var1 = new VarType(ck.descriptor); + stack.push(var1); + if (var1.stack_size == 2) { + stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY)); + } + break; + case CodeConstants.opc_putfield: + stack.pop(); + case CodeConstants.opc_putstatic: + ck = pool.getLinkConstant(instr.getOperand(0)); + var1 = new VarType(ck.descriptor); + stack.pop(var1.stack_size); + break; + case CodeConstants.opc_invokevirtual: + case CodeConstants.opc_invokespecial: + case CodeConstants.opc_invokeinterface: + stack.pop(); + case CodeConstants.opc_invokestatic: + case CodeConstants.opc_invokedynamic: + if (instr.opcode != CodeConstants.opc_invokedynamic || instr.bytecode_version >= CodeConstants.BYTECODE_JAVA_7) { + ck = pool.getLinkConstant(instr.getOperand(0)); + MethodDescriptor md = MethodDescriptor.parseDescriptor(ck.descriptor); + for (int i = 0; i < md.params.length; i++) { + stack.pop(md.params[i].stack_size); + } + if (md.ret.type != CodeConstants.TYPE_VOID) { + stack.push(md.ret); + if (md.ret.stack_size == 2) { + stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY)); + } + } + } + break; + case CodeConstants.opc_new: + cn = pool.getPrimitiveConstant(instr.getOperand(0)); + stack.push(new VarType(CodeConstants.TYPE_OBJECT, 0, cn.getString())); + break; + case CodeConstants.opc_newarray: + stack.pop(); + var1 = new VarType(arr_type[instr.getOperand(0) - 4]); + var1.arraydim = 1; + stack.push(var1); + break; + case CodeConstants.opc_athrow: + var1 = stack.pop(); + stack.clear(); + stack.push(var1); + break; + case CodeConstants.opc_checkcast: + case CodeConstants.opc_instanceof: + stack.pop(); + cn = pool.getPrimitiveConstant(instr.getOperand(0)); + stack.push(new VarType(CodeConstants.TYPE_OBJECT, 0, cn.getString())); + break; + case CodeConstants.opc_anewarray: + case CodeConstants.opc_multianewarray: + int dimensions = (instr.opcode == CodeConstants.opc_anewarray) ? 1 : instr.getOperand(1); + stack.pop(dimensions); + cn = pool.getPrimitiveConstant(instr.getOperand(0)); + if (cn.isArray) { + var1 = new VarType(CodeConstants.TYPE_OBJECT, 0, cn.getString()); + var1.arraydim += dimensions; + stack.push(var1); + } + else { + stack.push(new VarType(CodeConstants.TYPE_OBJECT, dimensions, cn.getString())); + } + } + } +} |