Example usage for org.objectweb.asm Opcodes ALOAD

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ALOAD.

Prototype

int ALOAD

To view the source code for org.objectweb.asm Opcodes ALOAD.

Click Source Link

Usage

From source file:com.mebigfatguy.junitflood.jvm.OperandStack.java

License:Apache License

public void performVarInsn(int opcode, int var) {
    switch (opcode) {
    case Opcodes.ILOAD:
    case Opcodes.LLOAD:
    case Opcodes.FLOAD:
    case Opcodes.DLOAD:
    case Opcodes.ALOAD:
        stack.add(registers.get(Integer.valueOf(var)));
        break;/*from ww w.ja  v a 2s .  c  om*/

    case Opcodes.ISTORE:
    case Opcodes.LSTORE:
    case Opcodes.FSTORE:
    case Opcodes.DSTORE:
    case Opcodes.ASTORE:
        registers.put(Integer.valueOf(var), stack.remove(stack.size() - 1));
        break;

    case Opcodes.RET:
        //nop - a fudge
        break;
    }
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.AdvancedAdviceAdapter.java

License:Open Source License

/**
 * This method calls a Java enum method with its expected argumentes
 * @param clazz The enum class to activate
 * @param methodName The method of the class to activate
 * @param methodSignature The method signature
 * @param args The arguments to pass to the method
 *//* w ww .j  a va  2  s . c  o m*/
protected void activateEnumMethod(Class<?> clazz, String methodName, String methodSignature, Object... args) {
    String internalName = Type.getInternalName(clazz);
    super.visitFieldInsn(Opcodes.GETSTATIC, internalName, "INSTANCE", "L" + internalName + ";");
    for (Object arg : args) {
        if (arg instanceof TempVar) {
            loadLocal(((TempVar) arg).tempVarIndex);
        } else if (arg instanceof TempArrayVar) {
            super.visitVarInsn(Opcodes.ALOAD, ((TempArrayVar) arg).tempVarIndex);
        } else {
            super.visitLdcInsn(arg);
        }
    }
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, internalName, methodName, methodSignature, false);
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.redis.JedisMethodVisitor.java

License:Open Source License

private void notifyEndOfMethod(TempArrayVar arrayOfArgumentsAfterBoxing, TempVar throwable) {
    super.visitFieldInsn(GETSTATIC, ImplementationsCoordinator.internalName, "INSTANCE",
            ImplementationsCoordinator.internalNameAsJavaName);

    mv.visitLdcInsn(getMethodName());//from  ww  w . ja  v a  2s .  c o  m
    mv.visitVarInsn(LLOAD, localDelta);
    if (arrayOfArgumentsAfterBoxing != null) {
        mv.visitVarInsn(Opcodes.ALOAD, arrayOfArgumentsAfterBoxing.tempVarIndex);
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    if (throwable != null) {
        loadLocal(throwable.tempVarIndex);
    } else {
        mv.visitInsn(ACONST_NULL);
    }

    mv.visitMethodInsn(INVOKEVIRTUAL, ImplementationsCoordinator.internalName, FINISH_DETECT_METHOD_NAME,
            FINISH_METHOD_DEFAULT_SIGNATURE, false);
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.redis.JedisMethodVisitor.java

License:Open Source License

private void reportFinishWithArgs1(int opcode) {

    int resultIndex = this.newLocal(Type.getType(Integer.class));
    super.visitFieldInsn(GETSTATIC, ImplementationsCoordinator.internalName, "INSTANCE",
            ImplementationsCoordinator.internalNameAsJavaName);

    mv.visitLdcInsn(getMethodName());/*from  ww w  .  j  a v  a 2s.c  o  m*/

    mv.visitMethodInsn(INVOKEVIRTUAL, ImplementationsCoordinator.internalName, FINISH_DETECT_METHOD_NAME,
            FINISH_METHOD_DEFAULT_SIGNATURE, false);

    mv.visitVarInsn(ISTORE, resultIndex);
    mv.visitVarInsn(ILOAD, resultIndex);
    Label ok = new Label();
    mv.visitJumpInsn(IFEQ, ok);

    int boxedArgumentsIndex = 0;
    int argumentIndex = isMethodStatic() ? 0 : 1;

    TempArrayVar arrayOfArgumentsAfterBoxing;
    arrayOfArgumentsAfterBoxing = createArray(numberOfArguments());

    // Fill the array with method parameters after boxing the primitive ones.
    for (Type argumentType : getArgumentTypes()) {
        setBoxedValueIntoArray(arrayOfArgumentsAfterBoxing, boxedArgumentsIndex, argumentType, argumentIndex);

        boxedArgumentsIndex++;
        if (ByteCodeUtils.isLargeType(argumentType)) {
            argumentIndex += 2;
        } else {
            ++argumentIndex;
        }
    }

    super.visitFieldInsn(GETSTATIC, ImplementationsCoordinator.internalName, "INSTANCE",
            ImplementationsCoordinator.internalNameAsJavaName);

    mv.visitLdcInsn(getMethodName());
    mv.visitVarInsn(Opcodes.ALOAD, arrayOfArgumentsAfterBoxing.tempVarIndex);

    mv.visitMethodInsn(INVOKEVIRTUAL, ImplementationsCoordinator.internalName, FINISH_DETECT_METHOD_NAME,
            FINISH_METHOD_DEFAULT_SIGNATURE, false);

    mv.visitLabel(ok);

    super.byteCodeForMethodExit(opcode);
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.redis.JedisMethodVisitor.java

License:Open Source License

protected void boxVariable(Type argumentType, int argumentIndex) {
    if (argumentType.equals(Type.BOOLEAN_TYPE)) {
        mv.visitVarInsn(Opcodes.ILOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;",
                false);/*from   ww  w .  ja v a2 s.  c  o m*/
    } else if (argumentType.equals(Type.BYTE_TYPE)) {
        mv.visitVarInsn(Opcodes.ILOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;", false);
    } else if (argumentType.equals(Type.CHAR_TYPE)) {
        mv.visitVarInsn(Opcodes.ILOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Character", "valueOf", "(C)Ljava/lang/Character;",
                false);
    } else if (argumentType.equals(Type.SHORT_TYPE)) {
        mv.visitVarInsn(Opcodes.ILOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;", false);
    } else if (argumentType.equals(Type.INT_TYPE)) {
        mv.visitVarInsn(Opcodes.ILOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;",
                false);
    } else if (argumentType.equals(Type.LONG_TYPE)) {
        mv.visitVarInsn(Opcodes.LLOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
    } else if (argumentType.equals(Type.FLOAT_TYPE)) {
        mv.visitVarInsn(Opcodes.FLOAD, argumentIndex);
        super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Float", "valueOf", "(F)Ljava/lang/Long;",
                false);
    } else if (argumentType.equals(Type.DOUBLE_TYPE)) {
        mv.visitVarInsn(Opcodes.DLOAD, argumentIndex);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Double", "valueOf", "(D)Ljava/lang/Double;", false);
    } else {
        mv.visitVarInsn(Opcodes.ALOAD, argumentIndex);
    }
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.redis.JedisMethodVisitor.java

License:Open Source License

protected void prepareArrayEntry(int arrayIndex, int entryIndex) {
    mv.visitVarInsn(Opcodes.ALOAD, arrayIndex);
    mv.visitIntInsn(Opcodes.BIPUSH, entryIndex);
}

---

From source file:com.microsoft.applicationinsights.agent.internal.agent.sql.PreparedStatementCtorMethodVisitor.java

License:Open Source License

@Override
public void visitCode() {
    super.visitCode();
    super.visitVarInsn(Opcodes.ALOAD, 0);
    super.visitVarInsn(Opcodes.ALOAD, metaData.sqlStringInCtor);
    super.visitFieldInsn(Opcodes.PUTFIELD, owner, metaData.fieldName, "Ljava/lang/String;");
}

---

From source file:com.mogujie.instantrun.IncrementalChangeVisitor.java

License:Apache License

/**
 * Turns this class into an override class that can be loaded by our custom class loader:
 * <ul>// ww w  .  java 2s. c  o m
 * <li>Make the class name be OriginalName$override</li>
 * <li>Ensure the class derives from java.lang.Object, no other inheritance</li>
 * <li>Ensure the class has a public parameterless constructor that is a noop.</li>
 * </ul>
 */
@Override
public void visit(int version, int access, String name, String signature, String superName,
        String[] interfaces) {
    super.visit(version, Opcodes.ACC_PUBLIC | Opcodes.ACC_SUPER, name + OVERRIDE_SUFFIX, signature,
            "java/lang/Object", new String[] { CHANGE_TYPE.getInternalName() });

    visitedClassName = name;
    visitedSuperName = superName;
    instanceToStaticDescPrefix = "(L" + visitedClassName + ";";

    // Create empty constructor
    MethodVisitor mv = super.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();

    //        super.visitField(Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC | Opcodes.ACC_STATIC,
    //                "$obsolete", "Z", null, null);
}

---

From source file:com.mogujie.instantrun.IncrementalChangeVisitor.java

License:Apache License

/**
 * To each class, add the dispatch method called by the original code that acts as a trampoline to
 * invoke the changed methods./*from ww w  .jav  a  2s  . co m*/
 * <p/>
 * Pseudo code:
 * <code>
 * Object access$dispatch(String name, object[] args) {
 * if (name.equals(
 * "firstMethod.(L$type;Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;")) {
 * return firstMethod(($type)arg[0], (String)arg[1], arg[2]);
 * }
 * if (name.equals("secondMethod.(L$type;Ljava/lang/String;I;)V")) {
 * secondMethod(($type)arg[0], (String)arg[1], (int)arg[2]);
 * return;
 * }
 * ...
 * StringBuilder $local1 = new StringBuilder();
 * $local1.append("Method not found ");
 * $local1.append(name);
 * $local1.append(" in " + visitedClassName +
 * "$dispatch implementation, restart the application");
 * throw new $package/InstantReloadException($local1.toString());
 * }
 * </code>
 */
private void addDispatchMethod() {
    int access = Opcodes.ACC_PUBLIC | Opcodes.ACC_VARARGS;
    Method m = new Method("access$dispatch", "(I[Ljava/lang/Object;)Ljava/lang/Object;");
    MethodVisitor visitor = super.visitMethod(access, m.getName(), m.getDescriptor(), null, null);

    final GeneratorAdapter mv = new GeneratorAdapter(access, m, visitor);

    if (TRACING_ENABLED) {
        mv.push("Redirecting ");
        mv.loadArg(0);
        trace(mv, 2);
    }

    List<MethodNode> allMethods = new ArrayList();

    // if we are disabled, do not generate any dispatch, the method will throw an exception
    // if invoked which should never happen.
    if (!instantRunDisabled) {
        //noinspection unchecked
        allMethods.addAll(classNode.methods);
        allMethods.addAll(addedMethods);
    }

    final Map<String, MethodNode> methods = new HashMap();
    for (MethodNode methodNode : allMethods) {
        if (methodNode.name.equals("<clinit>") || methodNode.name.equals("<init>")) {
            continue;
        }
        if (!isAccessCompatibleWithInstantRun(methodNode.access)) {
            continue;
        }
        methods.put(methodNode.name + "." + methodNode.desc, methodNode);
    }

    new IntSwitch() {
        @Override
        void visitString() {
            mv.visitVarInsn(Opcodes.ALOAD, 1);
        }

        @Override
        void visitInt() {
            mv.visitVarInsn(Opcodes.ILOAD, 1);
        }

        @Override
        void visitCase(String methodName) {
            MethodNode methodNode = methods.get(methodName);
            String name = methodNode.name;
            boolean isStatic = (methodNode.access & Opcodes.ACC_STATIC) != 0;
            String newDesc = computeOverrideMethodDesc(methodNode.desc, isStatic);

            if (TRACING_ENABLED) {
                trace(mv, "M: " + name + " P:" + newDesc);
            }
            Type[] args = Type.getArgumentTypes(newDesc);
            int argc = 0;
            for (Type t : args) {
                mv.visitVarInsn(Opcodes.ALOAD, 2);
                mv.push(argc);
                mv.visitInsn(Opcodes.AALOAD);
                ByteCodeUtils.unbox(mv, t);
                argc++;
            }
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, visitedClassName + "$override",
                    isStatic ? computeOverrideMethodName(name, methodNode.desc) : name, newDesc, false);
            Type ret = Type.getReturnType(methodNode.desc);
            if (ret.getSort() == Type.VOID) {
                mv.visitInsn(Opcodes.ACONST_NULL);
            } else {
                mv.box(ret);
            }
            mv.visitInsn(Opcodes.ARETURN);
        }

        @Override
        void visitDefault() {
            writeMissingMessageWithHash(mv, visitedClassName);
        }
    }.visit(mv, methods.keySet(), visitedClassName);

    mv.visitMaxs(0, 0);
    mv.visitEnd();

}

---

From source file:com.mogujie.instantrun.IncrementalChangeVisitor.java

License:Apache License

public void addSupportMethod() {
    int access = Opcodes.ACC_PUBLIC;
    Method m = new Method("isSupport", "(I)Z");
    MethodVisitor mv = super.visitMethod(access, m.getName(), m.getDescriptor(), null, null);

    mv.visitCode();/*from   www  . j a  v  a2 s.co  m*/
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    //        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/String", "hashCode", "()I", false);

    int[] hashArray = new int[fixMtds.size()];
    Label[] labelArray = new Label[fixMtds.size()];
    Label l0 = new Label();
    Label l1 = new Label();
    for (int i = 0; i < fixMtds.size(); i++) {
        hashArray[i] = AcesoProguardMap.instance().getClassData(visitedClassName).getMtdIndex(fixMtds.get(i));
        labelArray[i] = l0;
    }

    mv.visitLookupSwitchInsn(l1, hashArray, labelArray);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitInsn(Opcodes.IRETURN);
    mv.visitLabel(l1);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.IRETURN);
    mv.visitMaxs(1, 2);
    mv.visitEnd();

    mv.visitMaxs(0, 0);
    mv.visitEnd();

}

---

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