List of usage examples for org.objectweb.asm Opcodes LLOAD
int LLOAD
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From source file:asmlib.Type.java
License:Open Source License
public static Type fromLoadOpcode(int opcode) { char type;//from w ww. j a v a 2s . c om switch (opcode) { case Opcodes.ILOAD: type = 'I'; break; case Opcodes.LLOAD: type = 'J'; break; case Opcodes.FLOAD: type = 'F'; break; case Opcodes.DLOAD: type = 'D'; break; case Opcodes.ALOAD: return Type.OBJECT; default: throw new InstrumentationException("Unknown or invalid bytecode type"); } return Type.fromBytecode(type); }
From source file:asmlib.Type.java
License:Open Source License
/** Mtodo que retorna o opcode certo para o tipo de varivel que se quer fazer load. * Opcodes disponveis:/*from ww w. j a va2s. com*/ * - ILOAD para boolean, byte, char, short, int * - LLOAD para long * - FLOAD para float * - DLOAD para double * - ALOAD para referncia (objecto ou array) **/ public int getLoadInsn() { char c = bytecodeName().charAt(0); switch (c) { case 'Z': // boolean case 'B': // byte case 'C': // char case 'S': // short case 'I': // int return Opcodes.ILOAD; case 'J': // long return Opcodes.LLOAD; case 'F': // float return Opcodes.FLOAD; case 'D': // double return Opcodes.DLOAD; case '[': // Algum tipo de array case 'L': // objecto case 'T': // objecto (generics) return Opcodes.ALOAD; } throw new InstrumentationException("Unknown fieldType in getLoadInsn"); }
From source file:br.usp.each.saeg.badua.core.internal.instr.LongProbe.java
License:Open Source License
@Override public void accept(final MethodVisitor mv) { // update covered if (potcov != 0) { mv.visitVarInsn(Opcodes.LLOAD, vAlive); if (!singlePredecessor && potcovpuse != 0) { mv.visitVarInsn(Opcodes.LLOAD, vSleepy); mv.visitInsn(Opcodes.LAND);/* www . j a v a 2 s . com*/ } mv.visitLdcInsn(potcov); mv.visitInsn(Opcodes.LAND); mv.visitVarInsn(Opcodes.LLOAD, vCovered); mv.visitInsn(Opcodes.LOR); mv.visitVarInsn(Opcodes.LSTORE, vCovered); } // update alive if (disabled != 0) { mv.visitLdcInsn(~disabled); mv.visitVarInsn(Opcodes.LLOAD, vAlive); mv.visitInsn(Opcodes.LAND); } if (born != 0) { if (disabled == 0) { mv.visitVarInsn(Opcodes.LLOAD, vAlive); } mv.visitLdcInsn(born); mv.visitInsn(Opcodes.LOR); } if (disabled != 0 || born != 0) { mv.visitVarInsn(Opcodes.LSTORE, vAlive); } // update sleepy if (sleepy != 0) { mv.visitLdcInsn(~sleepy); } else { mv.visitLdcInsn(-1L); } mv.visitVarInsn(Opcodes.LSTORE, vSleepy); }
From source file:br.usp.each.saeg.badua.core.internal.instr.LongUpdateProbe.java
License:Open Source License
@Override public void accept(final MethodVisitor mv) { mv.visitVarInsn(Opcodes.LLOAD, vCovered); mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, InstrSupport.DATAMETHOD_NAME, InstrSupport.DATAMETHOD_DESC, false);//from www . j a v a 2 s . c om InstrSupport.push(mv, index); mv.visitInsn(Opcodes.DUP2_X2); mv.visitInsn(Opcodes.LALOAD); mv.visitInsn(Opcodes.LOR); mv.visitInsn(Opcodes.LASTORE); }
From source file:bytecode.InstructionExporter.java
License:Apache License
/** * Outputs a read operation, choosing both the correct opcode family (variable * read, array load, field get, etc.) and type. * * @param instruction Read instruction./* ww w .ja v a 2 s . c o m*/ * @return <code>null</code> */ @Override public Void visit(Read instruction) { // Variable Reads if (instruction.getState() instanceof Variable) { Variable v = (Variable) instruction.getState(); switch (v.getType().getSort()) { case LONG: mv.visitVarInsn(Opcodes.LLOAD, v.getIndex()); break; case FLOAT: mv.visitVarInsn(Opcodes.FLOAD, v.getIndex()); break; case DOUBLE: mv.visitVarInsn(Opcodes.DLOAD, v.getIndex()); break; case REF: mv.visitVarInsn(Opcodes.ALOAD, v.getIndex()); break; default: mv.visitVarInsn(Opcodes.ILOAD, v.getIndex()); break; } // Array Loads } else if (instruction.getState() instanceof ArrayElement) { switch (instruction.getState().getType().getSort()) { case INT: mv.visitInsn(Opcodes.IALOAD); break; case LONG: mv.visitInsn(Opcodes.LALOAD); break; case FLOAT: mv.visitInsn(Opcodes.FALOAD); break; case DOUBLE: mv.visitInsn(Opcodes.DALOAD); break; case REF: mv.visitInsn(Opcodes.AALOAD); break; case BYTE: mv.visitInsn(Opcodes.BALOAD); break; case BOOL: mv.visitInsn(Opcodes.BALOAD); break; case CHAR: mv.visitInsn(Opcodes.CALOAD); break; case SHORT: mv.visitInsn(Opcodes.SALOAD); break; } // Static Reads } else if (instruction.getState() instanceof Field) { Field f = (Field) instruction.getState(); mv.visitFieldInsn(Opcodes.GETSTATIC, f.getOwner().getName(), f.getName(), f.getType().getDescriptor()); // Field Reads } else if (instruction.getState() instanceof InstanceField) { Field f = (Field) ((InstanceField) instruction.getState()).getField(); mv.visitFieldInsn(Opcodes.GETFIELD, f.getOwner().getName(), f.getName(), f.getType().getDescriptor()); } return null; }
From source file:bytecode.MethodImporter.java
License:Apache License
/** * Imports variable load and store operations, as well as RET?!? * * @param opcode Opcode.//from www. j a v a 2s . c o m * @param var Variable index. */ @Override public void visitVarInsn(final int opcode, final int var) { switch (opcode) { case Opcodes.ILOAD: createVarRead(var, Type.INT); break; case Opcodes.LLOAD: createVarRead(var, Type.LONG); break; case Opcodes.FLOAD: createVarRead(var, Type.FLOAT); break; case Opcodes.DLOAD: createVarRead(var, Type.DOUBLE); break; case Opcodes.ALOAD: createVarRead(var, Type.getFreshRef()); break; case Opcodes.ISTORE: createVarWrite(var, Type.INT); break; case Opcodes.LSTORE: createVarWrite(var, Type.LONG); break; case Opcodes.FSTORE: createVarWrite(var, Type.FLOAT); break; case Opcodes.DSTORE: createVarWrite(var, Type.DOUBLE); break; case Opcodes.ASTORE: createVarWrite(var, Type.getFreshRef()); break; // TODO: RET (paired with JSR) case Opcodes.RET: throw new RuntimeException("visitVarInsn: RET"); } }
From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java
License:Apache License
/** * Returns the T_LOAD opcode./*from w ww . ja v a 2 s. c om*/ * @param type the target type * @return the opcode */ public static int loadOpcodeOf(TypeDescription type) { Arguments.requireNonNull(type); if (type.getTypeKind() == TypeKind.BASIC) { switch (((BasicTypeDescription) type).getBasicTypeKind()) { case BOOLEAN: case BYTE: case CHAR: case SHORT: case INT: return Opcodes.ILOAD; case LONG: return Opcodes.LLOAD; case FLOAT: return Opcodes.FLOAD; case DOUBLE: return Opcodes.DLOAD; default: throw new AssertionError(type); } } return Opcodes.ALOAD; }
From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java
License:Apache License
/** * Performs {@code T_STORE} instruction. * @param method the target method// w w w .j a va 2 s . c o m * @param sort the target type sort * @param index the target local variable index * @return the target local variable ref */ public static LocalVarRef putLocalVar(MethodVisitor method, int sort, int index) { int load; int store; switch (sort) { case Type.BOOLEAN: case Type.BYTE: case Type.SHORT: case Type.CHAR: case Type.INT: load = Opcodes.ILOAD; store = Opcodes.ISTORE; break; case Type.LONG: load = Opcodes.LLOAD; store = Opcodes.LSTORE; break; case Type.FLOAT: load = Opcodes.FLOAD; store = Opcodes.FSTORE; break; case Type.DOUBLE: load = Opcodes.DLOAD; store = Opcodes.DSTORE; break; case Type.ARRAY: case Type.OBJECT: load = Opcodes.ALOAD; store = Opcodes.ASTORE; break; default: throw new AssertionError(sort); } method.visitVarInsn(store, index); return new LocalVarRef(load, index); }
From source file:com.codename1.tools.ikvm.Parser.java
/** * Parses an InputStream containing a class. * @param input The input stream with a class. * @return If a transformation occurred, the bytes for the changed class will be returned. Otherwise null will be returned. * @throws Exception /*from w ww. ja va2 s. c o m*/ */ public static byte[] parse(InputStream input, ClassLoader classLoader) throws Exception { ClassReader r = new ClassReader(input); Parser p = new Parser(); //ClassWriter w = new ClassWriter(r, 0); ClassNode classNode = new ClassNode(); //p.classNode = classNode; r.accept(classNode, 0); //r.accept(p, ClassReader.EXPAND_FRAMES) List<MethodNode> methodsToAdd = new ArrayList<MethodNode>(); int methodNum = 0; for (Object o : classNode.methods) { methodNum++; MethodNode methodNode = (MethodNode) o; boolean synchronizedMethod = (methodNode.access & Opcodes.ACC_SYNCHRONIZED) == Opcodes.ACC_SYNCHRONIZED; if (synchronizedMethod) { // Check for a try statement final boolean[] tryCatchFound = new boolean[1]; //System.out.println("Found sync method "+methodNode.name+". Checking for try blocks"); methodNode.accept(new MethodVisitor(Opcodes.ASM5) { @Override public void visitTryCatchBlock(Label label, Label label1, Label label2, String string) { tryCatchFound[0] = true; } }); if (!tryCatchFound[0]) { continue; } //System.out.println("Instructions: "+Arrays.toString(methodNode.instructions.toArray())); System.out.println("Transforming method " + methodNode.name + " of class " + classNode.name); MethodDescriptor md = new MethodDescriptor(methodNode.access, methodNode.name, methodNode.desc); //methodNode.access = methodNode.access & ~Opcodes.ACC_SYNCHRONIZED; String privateMethodName = (md.constructor ? "___cn1init__" : methodNode.name) + "___cn1sync" + (methodNum); MethodNode syncMethod = new MethodNode(methodNode.access, methodNode.name, methodNode.desc, methodNode.signature, (String[]) methodNode.exceptions.toArray(new String[methodNode.exceptions.size()])); methodNode.name = privateMethodName; methodNode.access = (methodNode.access | Opcodes.ACC_PRIVATE) & ~Opcodes.ACC_PUBLIC & ~Opcodes.ACC_PROTECTED & ~Opcodes.ACC_SYNCHRONIZED; LabelNode startLabel = new LabelNode(); syncMethod.instructions.add(startLabel); LabelNode endLabel = new LabelNode(); int argIndex = 0; if (!md.staticMethod) { //System.out.println(methodNode.name + " is not static"); syncMethod.localVariables.add(new LocalVariableNode("arg" + (argIndex), "L" + classNode.name + ";", null, startLabel, endLabel, argIndex)); syncMethod.instructions.add(new VarInsnNode(Opcodes.ALOAD, argIndex++)); } for (ByteCodeMethodArg arg : md.arguments) { char typeChar = arg.type; if (arg.dim > 0) { typeChar = 'L'; } if (arg.desc == null || arg.desc.isEmpty()) { throw new RuntimeException( "Invalid arg description for arg " + argIndex + " of method " + methodNode.name); } syncMethod.localVariables.add(new LocalVariableNode("arg" + (argIndex), arg.desc, arg.desc, startLabel, endLabel, argIndex)); switch (typeChar) { case 'L': syncMethod.instructions.add(new VarInsnNode(Opcodes.ALOAD, argIndex++)); //syncMethod.localVariables.add(new LocalVariableNode("arg"+(argIndex-1), arg.desc, null, startLabel, endLabel, argIndex-1)); break; case 'S': case 'I': case 'B': case 'Z': case 'C': syncMethod.instructions.add(new VarInsnNode(Opcodes.ILOAD, argIndex++)); break; case 'J': syncMethod.instructions.add(new VarInsnNode(Opcodes.LLOAD, argIndex++)); argIndex++; // arg index increments 2 for double size args break; case 'F': syncMethod.instructions.add(new VarInsnNode(Opcodes.FLOAD, argIndex++)); break; case 'D': syncMethod.instructions.add(new VarInsnNode(Opcodes.DLOAD, argIndex++)); argIndex++;// arg index increments 2 for double size args break; default: throw new IllegalArgumentException("Unsupported argument type " + arg.type); } } if (md.staticMethod) { syncMethod.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, classNode.name, privateMethodName, methodNode.desc)); } else { syncMethod.instructions.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, classNode.name, privateMethodName, methodNode.desc)); } if (md.returnType != null) { char typeChar = md.returnType.type; if (md.returnType.dim > 0) { typeChar = 'L'; } switch (typeChar) { case 'L': syncMethod.instructions.add(new InsnNode(Opcodes.ARETURN)); break; case 'S': case 'I': case 'B': case 'Z': case 'C': syncMethod.instructions.add(new InsnNode(Opcodes.IRETURN)); break; case 'J': syncMethod.instructions.add(new InsnNode(Opcodes.LRETURN)); break; case 'F': syncMethod.instructions.add(new InsnNode(Opcodes.FRETURN)); break; case 'D': syncMethod.instructions.add(new InsnNode(Opcodes.DRETURN)); break; case 'V': syncMethod.instructions.add(new InsnNode(Opcodes.RETURN)); break; default: throw new IllegalArgumentException("Unsupported argument type " + md.returnType.type); } } else { syncMethod.instructions.add(new InsnNode(Opcodes.DRETURN)); } syncMethod.instructions.add(endLabel); methodsToAdd.add(syncMethod); } } if (!methodsToAdd.isEmpty()) { changed = true; System.out .println("Transforming " + methodsToAdd.size() + " synchronized methods in " + classNode.name); classNode.methods.addAll(methodsToAdd); ClassWriter w = new ClassWriter(ClassWriter.COMPUTE_MAXS); classNode.accept(w); byte[] out = w.toByteArray(); if (verify) { verify(out, classLoader); } return out; } else { ClassWriter w = new ClassWriter(0); classNode.accept(w); byte[] out = w.toByteArray(); return out; } }
From source file:com.codename1.tools.translator.BytecodeMethod.java
License:Open Source License
boolean optimize() { int instructionCount = instructions.size(); // optimize away a method that only contains the void return instruction e.g. blank constructors etc. if (instructionCount < 6) { int realCount = instructionCount; Instruction actual = null;/*from ww w . j a v a2s .c o m*/ for (int iter = 0; iter < instructionCount; iter++) { Instruction current = instructions.get(iter); if (current instanceof LabelInstruction) { realCount--; continue; } if (current instanceof LineNumber) { realCount--; continue; } actual = current; } if (realCount == 1 && actual != null && actual.getOpcode() == Opcodes.RETURN) { return false; } } boolean astoreCalls = false; boolean hasInstructions = false; boolean hasTryCatch = false; for (int iter = 0; iter < instructionCount - 1; iter++) { Instruction current = instructions.get(iter); if (current instanceof TryCatch) { hasTryCatch = true; } current.setMethod(this); if (current.isOptimized()) { continue; } int currentOpcode = current.getOpcode(); switch (currentOpcode) { case Opcodes.CHECKCAST: { // Remove the check cast for now as it gets in the way of other optimizations instructions.remove(iter); iter--; instructionCount--; break; } } } for (int iter = 0; iter < instructionCount - 1; iter++) { Instruction current = instructions.get(iter); if (current.isOptimized()) { // This instruction has already been optimized // we should skip it and proceed to the next one continue; } Instruction next = instructions.get(iter + 1); int currentOpcode = current.getOpcode(); int nextOpcode = next.getOpcode(); if (ArithmeticExpression.isArithmeticOp(current)) { int addedIndex = ArithmeticExpression.tryReduce(instructions, iter); if (addedIndex >= 0) { iter = addedIndex; instructionCount = instructions.size(); continue; } } if (current instanceof Field) { int newIter = Field.tryReduce(instructions, iter); if (newIter >= 0) { iter = newIter; instructionCount = instructions.size(); continue; } } switch (currentOpcode) { case Opcodes.ARRAYLENGTH: { if (!dependentClasses.contains("java_lang_NullPointerException")) { dependentClasses.add("java_lang_NullPointerException"); } int newIter = ArrayLengthExpression.tryReduce(instructions, iter); if (newIter >= 0) { instructionCount = instructions.size(); iter = newIter; continue; } break; } case Opcodes.DUP: { int newIter = DupExpression.tryReduce(instructions, iter); if (newIter >= 0) { iter = newIter; instructionCount = instructions.size(); continue; } break; } case Opcodes.POP: { if (iter > 0) { Instruction prev = instructions.get(iter - 1); if (prev instanceof CustomInvoke) { CustomInvoke inv = (CustomInvoke) prev; if (inv.methodHasReturnValue()) { inv.setNoReturn(true); instructions.remove(iter); iter--; instructionCount--; continue; } } } break; } case Opcodes.ASTORE: case Opcodes.ISTORE: case Opcodes.DSTORE: case Opcodes.LSTORE: case Opcodes.FSTORE: { if (iter > 0 && current instanceof VarOp) { VarOp currentVarOp = (VarOp) current; Instruction prev = instructions.get(iter - 1); if (prev instanceof AssignableExpression) { AssignableExpression expr = (AssignableExpression) prev; StringBuilder sb = new StringBuilder(); if (currentVarOp.assignFrom(expr, sb)) { instructions.remove(iter - 1); instructions.remove(iter - 1); instructions.add(iter - 1, new CustomIntruction(sb.toString(), sb.toString(), dependentClasses)); iter = iter - 1; instructionCount = instructions.size(); continue; } } else if (prev instanceof CustomInvoke) { CustomInvoke inv = (CustomInvoke) prev; StringBuilder sb = new StringBuilder(); if (currentVarOp.assignFrom(inv, sb)) { instructions.remove(iter - 1); instructions.remove(iter - 1); instructions.add(iter - 1, new CustomIntruction(sb.toString(), sb.toString(), dependentClasses)); iter = iter - 1; instructionCount = instructions.size(); continue; } } } break; } case Opcodes.IRETURN: case Opcodes.FRETURN: case Opcodes.ARETURN: case Opcodes.LRETURN: case Opcodes.DRETURN: { if (iter > 0 && current instanceof BasicInstruction) { Instruction prev = instructions.get(iter - 1); if (prev instanceof AssignableExpression) { AssignableExpression expr = (AssignableExpression) prev; StringBuilder sb = new StringBuilder(); if (expr.assignTo(null, sb)) { instructions.remove(iter - 1); instructions.remove(iter - 1); String exprString = sb.toString().trim(); String retVal = exprString; sb.setLength(0); if (!prev.isConstant()) { sb.append("\n{\n "); switch (currentOpcode) { case Opcodes.IRETURN: sb.append("JAVA_INT"); break; case Opcodes.FRETURN: sb.append("JAVA_FLOAT"); break; case Opcodes.ARETURN: sb.append("JAVA_OBJECT"); break; case Opcodes.LRETURN: sb.append("JAVA_LONG"); break; case Opcodes.DRETURN: sb.append("JAVA_DOUBLE"); break; } sb.append(" ___returnValue=").append(exprString).append(";\n"); retVal = "___returnValue"; } if (synchronizedMethod) { if (staticMethod) { sb.append(" monitorExit(threadStateData, (JAVA_OBJECT)&class__"); sb.append(getClsName()); sb.append(");\n"); } else { sb.append(" monitorExit(threadStateData, __cn1ThisObject);\n"); } } if (hasTryCatch) { sb.append( " releaseForReturnInException(threadStateData, cn1LocalsBeginInThread, methodBlockOffset); return ") .append(retVal).append(";\n"); } else { sb.append(" releaseForReturn(threadStateData, cn1LocalsBeginInThread); return ") .append(retVal).append(";\n"); } if (!prev.isConstant()) { sb.append("}\n"); } instructions.add(iter - 1, new CustomIntruction(sb.toString(), sb.toString(), dependentClasses)); iter--; instructionCount = instructions.size(); continue; } } else if (prev instanceof CustomInvoke) { CustomInvoke expr = (CustomInvoke) prev; String returnType = expr.getReturnValue(); if (returnType != null && !"JAVA_OBJECT".equals(returnType)) { // We can't safely return a JAVA_OBJECT directly because it needs to be added // to the stack for the GC StringBuilder sb = new StringBuilder(); if (expr.appendExpression(sb)) { instructions.remove(iter - 1); instructions.remove(iter - 1); String exprString = sb.toString().trim(); String retVal = exprString; sb.setLength(0); if (!expr.isConstant()) { sb.append("\n{\n "); switch (currentOpcode) { case Opcodes.IRETURN: sb.append("JAVA_INT"); break; case Opcodes.FRETURN: sb.append("JAVA_FLOAT"); break; case Opcodes.ARETURN: sb.append("JAVA_OBJECT"); break; case Opcodes.LRETURN: sb.append("JAVA_LONG"); break; case Opcodes.DRETURN: sb.append("JAVA_DOUBLE"); break; } sb.append(" ___returnValue=").append(exprString).append(";\n"); retVal = "___returnValue"; } if (synchronizedMethod) { if (staticMethod) { sb.append(" monitorExit(threadStateData, (JAVA_OBJECT)&class__"); sb.append(getClsName()); sb.append(");\n"); } else { sb.append(" monitorExit(threadStateData, __cn1ThisObject);\n"); } } if (hasTryCatch) { sb.append( " releaseForReturnInException(threadStateData, cn1LocalsBeginInThread, methodBlockOffset); return ") .append(retVal).append(";\n"); } else { sb.append( " releaseForReturn(threadStateData, cn1LocalsBeginInThread); return ") .append(retVal).append(";\n"); } if (!expr.isConstant()) { sb.append("}\n"); } instructions.add(iter - 1, new CustomIntruction(sb.toString(), sb.toString(), dependentClasses)); iter--; instructionCount = instructions.size(); continue; } } } } break; } case Opcodes.BASTORE: case Opcodes.SASTORE: case Opcodes.CASTORE: case Opcodes.AASTORE: case Opcodes.IASTORE: case Opcodes.DASTORE: case Opcodes.LASTORE: case Opcodes.FASTORE: { if (iter > 2 && current instanceof BasicInstruction) { StringBuilder devNull = new StringBuilder(); String arrayLiteral = null; String indexLiteral = null; String valueLiteral = null; Instruction prev3 = instructions.get(iter - 3); if (prev3 instanceof AssignableExpression) { if (((AssignableExpression) prev3).assignTo(null, devNull)) { arrayLiteral = devNull.toString().trim(); } } devNull.setLength(0); Instruction prev2 = instructions.get(iter - 2); if (prev2 instanceof AssignableExpression) { if (((AssignableExpression) prev2).assignTo(null, devNull)) { indexLiteral = devNull.toString().trim(); } } devNull.setLength(0); Instruction prev1 = instructions.get(iter - 1); if (prev1 instanceof AssignableExpression) { if (((AssignableExpression) prev1).assignTo(null, devNull)) { valueLiteral = devNull.toString().trim(); } } else if (prev1 instanceof CustomInvoke) { devNull.setLength(0); if (((CustomInvoke) prev1).appendExpression(devNull)) { valueLiteral = devNull.toString().trim(); } } if (arrayLiteral != null && indexLiteral != null && valueLiteral != null) { String elementType = null; switch (current.getOpcode()) { case Opcodes.AASTORE: elementType = "OBJECT"; break; case Opcodes.IASTORE: elementType = "INT"; break; case Opcodes.DASTORE: elementType = "DOUBLE"; break; case Opcodes.LASTORE: elementType = "LONG"; break; case Opcodes.FASTORE: elementType = "FLOAT"; break; case Opcodes.CASTORE: elementType = "CHAR"; break; case Opcodes.BASTORE: elementType = "BYTE"; break; case Opcodes.SASTORE: elementType = "SHORT"; break; } if (elementType == null) { break; } instructions.remove(iter - 3); instructions.remove(iter - 3); instructions.remove(iter - 3); instructions.remove(iter - 3); String code = " CN1_SET_ARRAY_ELEMENT_" + elementType + "(" + arrayLiteral + ", " + indexLiteral + ", " + valueLiteral + ");\n"; instructions.add(iter - 3, new CustomIntruction(code, code, dependentClasses)); iter = iter - 3; instructionCount = instructions.size(); continue; } } break; } case Opcodes.FALOAD: case Opcodes.BALOAD: case Opcodes.IALOAD: case Opcodes.LALOAD: case Opcodes.DALOAD: case Opcodes.AALOAD: case Opcodes.SALOAD: case Opcodes.CALOAD: { int newIter = ArrayLoadExpression.tryReduce(instructions, iter); if (newIter >= 0) { iter = newIter; instructionCount = instructions.size(); continue; } break; } /* Try to optimize if statements that just use constants and local variables so that they don't need the intermediate push and pop from the stack. */ case Opcodes.IF_ACMPEQ: case Opcodes.IF_ACMPNE: case Opcodes.IF_ICMPLE: case Opcodes.IF_ICMPLT: case Opcodes.IF_ICMPNE: case Opcodes.IF_ICMPGT: case Opcodes.IF_ICMPEQ: case Opcodes.IF_ICMPGE: { if (iter > 1) { Instruction leftArg = instructions.get(iter - 2); Instruction rightArg = instructions.get(iter - 1); String leftLiteral = null; String rightLiteral = null; if (leftArg instanceof AssignableExpression) { StringBuilder sb = new StringBuilder(); if (((AssignableExpression) leftArg).assignTo(null, sb)) { leftLiteral = sb.toString().trim(); } } else if (leftArg instanceof CustomInvoke) { CustomInvoke inv = (CustomInvoke) leftArg; StringBuilder sb = new StringBuilder(); if (!"JAVA_OBJECT".equals(inv.getReturnValue()) && inv.appendExpression(sb)) { leftLiteral = sb.toString().trim(); } } if (rightArg instanceof AssignableExpression) { StringBuilder sb = new StringBuilder(); if (((AssignableExpression) rightArg).assignTo(null, sb)) { rightLiteral = sb.toString().trim(); } } else if (rightArg instanceof CustomInvoke) { CustomInvoke inv = (CustomInvoke) rightArg; StringBuilder sb = new StringBuilder(); if (!"JAVA_OBJECT".equals(inv.getReturnValue()) && inv.appendExpression(sb)) { rightLiteral = sb.toString().trim(); } } if (rightLiteral != null && leftLiteral != null) { Jump jmp = (Jump) current; instructions.remove(iter - 2); instructions.remove(iter - 2); instructions.remove(iter - 2); //instructions.remove(iter-2); iter -= 2; //instructionCount -= 2; StringBuilder sb = new StringBuilder(); String operator = null; String opName = null; switch (currentOpcode) { case Opcodes.IF_ICMPLE: operator = "<="; opName = "IF_ICMPLE"; break; case Opcodes.IF_ICMPLT: operator = "<"; opName = "IF_IMPLT"; break; case Opcodes.IF_ICMPNE: operator = "!="; opName = "IF_ICMPNE"; break; case Opcodes.IF_ICMPGT: operator = ">"; opName = "IF_ICMPGT"; break; case Opcodes.IF_ICMPGE: operator = ">="; opName = "IF_ICMPGE"; break; case Opcodes.IF_ICMPEQ: operator = "=="; opName = "IF_ICMPEQ"; break; case Opcodes.IF_ACMPEQ: operator = "=="; opName = "IF_ACMPEQ"; break; case Opcodes.IF_ACMPNE: operator = "!="; opName = "IF_ACMPNE"; break; default: throw new RuntimeException( "Invalid operator during optimization of integer comparison"); } sb.append("if (").append(leftLiteral).append(operator).append(rightLiteral).append(") /* ") .append(opName).append(" CustomJump */ "); CustomJump newJump = CustomJump.create(jmp, sb.toString()); //jmp.setCustomCompareCode(sb.toString()); newJump.setOptimized(true); instructions.add(iter, newJump); instructionCount = instructions.size(); } } break; } case Opcodes.IFNONNULL: case Opcodes.IFNULL: case Opcodes.IFLE: case Opcodes.IFLT: case Opcodes.IFNE: case Opcodes.IFGT: case Opcodes.IFEQ: case Opcodes.IFGE: { String rightArg = "0"; if (currentOpcode == Opcodes.IFNONNULL || currentOpcode == Opcodes.IFNULL) { rightArg = "JAVA_NULL"; } if (iter > 0) { Instruction leftArg = instructions.get(iter - 1); String leftLiteral = null; if (leftArg instanceof AssignableExpression) { StringBuilder sb = new StringBuilder(); if (((AssignableExpression) leftArg).assignTo(null, sb)) { leftLiteral = sb.toString().trim(); } } else if (leftArg instanceof CustomInvoke) { CustomInvoke inv = (CustomInvoke) leftArg; StringBuilder sb = new StringBuilder(); if (inv.appendExpression(sb)) { leftLiteral = sb.toString().trim(); } } if (leftLiteral != null) { Jump jmp = (Jump) current; instructions.remove(iter - 1); instructions.remove(iter - 1); //instructions.remove(iter-2); iter -= 1; //instructionCount -= 2; StringBuilder sb = new StringBuilder(); String operator = null; String opName = null; switch (currentOpcode) { case Opcodes.IFLE: operator = "<="; opName = "IFLE"; break; case Opcodes.IFLT: operator = "<"; opName = "IFLT"; break; case Opcodes.IFNE: operator = "!="; opName = "IFNE"; break; case Opcodes.IFGT: operator = ">"; opName = "IFGT"; break; case Opcodes.IFGE: operator = ">="; opName = "IFGE"; break; case Opcodes.IFEQ: operator = "=="; opName = "IFEQ"; break; case Opcodes.IFNULL: operator = "=="; opName = "IFNULL"; break; case Opcodes.IFNONNULL: operator = "!="; opName = "IFNONNULL"; break; default: throw new RuntimeException( "Invalid operator during optimization of integer comparison"); } sb.append("if (").append(leftLiteral).append(operator).append(rightArg).append(") /* ") .append(opName).append(" CustomJump */ "); CustomJump newJump = CustomJump.create(jmp, sb.toString()); //jmp.setCustomCompareCode(sb.toString()); newJump.setOptimized(true); instructions.add(iter, newJump); instructionCount = instructions.size(); } } break; } case Opcodes.INVOKEVIRTUAL: case Opcodes.INVOKESTATIC: case Opcodes.INVOKESPECIAL: case Opcodes.INVOKEINTERFACE: { if (current instanceof Invoke) { Invoke inv = (Invoke) current; List<ByteCodeMethodArg> invocationArgs = inv.getArgs(); int numArgs = invocationArgs.size(); //if (current.getOpcode() != Opcodes.INVOKESTATIC) { // numArgs++; //} if (iter >= numArgs) { String[] argLiterals = new String[numArgs]; StringBuilder devNull = new StringBuilder(); for (int i = 0; i < numArgs; i++) { devNull.setLength(0); Instruction instr = instructions.get(iter - numArgs + i); if (instr instanceof AssignableExpression && ((AssignableExpression) instr).assignTo(null, devNull)) { argLiterals[i] = devNull.toString().trim(); } else if (instr instanceof CustomInvoke) { CustomInvoke cinv = (CustomInvoke) instr; devNull.setLength(0); if (!"JAVA_OBJECT".equals(cinv.getReturnValue()) && cinv.appendExpression(devNull)) { // We can't add invocations that return objects directly // because they need to be added to the stack for GC argLiterals[i] = devNull.toString().trim(); } } else if (instr instanceof ArithmeticExpression) { argLiterals[i] = ((ArithmeticExpression) instr).getExpressionAsString().trim(); } else if (instr instanceof VarOp) { VarOp var = (VarOp) instr; switch (instr.getOpcode()) { case Opcodes.ALOAD: { if (!isStatic() && var.getIndex() == 0) { argLiterals[i] = "__cn1ThisObject"; } else { argLiterals[i] = "locals[" + var.getIndex() + "].data.o"; } break; } case Opcodes.ILOAD: { argLiterals[i] = "ilocals_" + var.getIndex() + "_"; break; } case Opcodes.ACONST_NULL: { argLiterals[i] = "JAVA_NULL"; break; } case Opcodes.DLOAD: { argLiterals[i] = "dlocals_" + var.getIndex() + "_"; break; } case Opcodes.FLOAD: { argLiterals[i] = "flocals_" + var.getIndex() + "_"; break; } case Opcodes.LLOAD: { argLiterals[i] = "llocals_" + var.getIndex() + "_"; break; } case Opcodes.ICONST_0: { argLiterals[i] = "0"; break; } case Opcodes.ICONST_1: { argLiterals[i] = "1"; break; } case Opcodes.ICONST_2: { argLiterals[i] = "2"; break; } case Opcodes.ICONST_3: { argLiterals[i] = "3"; break; } case Opcodes.ICONST_4: { argLiterals[i] = "4"; break; } case Opcodes.ICONST_5: { argLiterals[i] = "5"; break; } case Opcodes.ICONST_M1: { argLiterals[i] = "-1"; break; } case Opcodes.LCONST_0: { argLiterals[i] = "(JAVA_LONG)0"; break; } case Opcodes.LCONST_1: { argLiterals[i] = "(JAVA_LONG)1"; break; } case Opcodes.BIPUSH: case Opcodes.SIPUSH: { argLiterals[i] = String.valueOf(var.getIndex()); break; } } } else { switch (instr.getOpcode()) { case Opcodes.ACONST_NULL: { argLiterals[i] = "JAVA_NULL"; break; } case Opcodes.ICONST_0: { argLiterals[i] = "0"; break; } case Opcodes.ICONST_1: { argLiterals[i] = "1"; break; } case Opcodes.ICONST_2: { argLiterals[i] = "2"; break; } case Opcodes.ICONST_3: { argLiterals[i] = "3"; break; } case Opcodes.ICONST_4: { argLiterals[i] = "4"; break; } case Opcodes.ICONST_5: { argLiterals[i] = "5"; break; } case Opcodes.ICONST_M1: { argLiterals[i] = "-1"; break; } case Opcodes.LCONST_0: { argLiterals[i] = "(JAVA_LONG)0"; break; } case Opcodes.LCONST_1: { argLiterals[i] = "(JAVA_LONG)1"; break; } case Opcodes.BIPUSH: { if (instr instanceof BasicInstruction) { argLiterals[i] = String.valueOf(((BasicInstruction) instr).getValue()); } break; } case Opcodes.LDC: { if (instr instanceof Ldc) { Ldc ldc = (Ldc) instr; argLiterals[i] = ldc.getValueAsString(); } break; } } } } // Check to make sure that we have all the args as literals. boolean missingLiteral = false; for (String lit : argLiterals) { if (lit == null) { missingLiteral = true; break; } } // We have all of the arguments as literals. Let's // add them to our invoke instruction. if (!missingLiteral) { CustomInvoke newInvoke = CustomInvoke.create(inv); instructions.remove(iter); instructions.add(iter, newInvoke); int newIter = iter; for (int i = 0; i < numArgs; i++) { instructions.remove(iter - numArgs); newIter--; newInvoke.setLiteralArg(i, argLiterals[i]); } if (inv.getOpcode() != Opcodes.INVOKESTATIC) { Instruction ldTarget = instructions.get(iter - numArgs - 1); if (ldTarget instanceof AssignableExpression) { StringBuilder targetExprStr = new StringBuilder(); if (((AssignableExpression) ldTarget).assignTo(null, targetExprStr)) { newInvoke.setTargetObjectLiteral(targetExprStr.toString().trim()); instructions.remove(iter - numArgs - 1); newIter--; } } else if (ldTarget instanceof CustomInvoke) { // WE Can't pass a custom invoke as the target directly // because it the return value needs to be added to the // stack for the GC } else { switch (ldTarget.getOpcode()) { case Opcodes.ALOAD: { VarOp v = (VarOp) ldTarget; if (isStatic() && v.getIndex() == 0) { newInvoke.setTargetObjectLiteral("__cn1ThisObject"); } else { newInvoke.setTargetObjectLiteral("locals[" + v.getIndex() + "].data.o"); } instructions.remove(iter - numArgs - 1); newIter--; break; } } } } newInvoke.setOptimized(true); //iter = 0; instructionCount = instructions.size(); iter = newIter; } } } break; } } astoreCalls = astoreCalls || currentOpcode == Opcodes.ASTORE || currentOpcode == Opcodes.ISTORE || currentOpcode == Opcodes.LSTORE || currentOpcode == Opcodes.DSTORE || currentOpcode == Opcodes.FSTORE; hasInstructions = hasInstructions | current.getOpcode() != -1; } return hasInstructions; }