jdk.internal.org.objectweb.asm.MethodVisitor#visitLdcInsn

Source File: AddressVarHandleGenerator.java From Bytecoder with Apache License 2.0

6 votes

void addConstructor(BinderClassWriter cw) {
    MethodType constrType = MethodType.methodType(void.class, VarForm.class, boolean.class, long.class, long.class, long.class, long[].class);
    MethodVisitor mv = cw.visitMethod(0, "<init>", constrType.toMethodDescriptorString(), null, null);
    mv.visitCode();
    //super call
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(VarForm.class));
    mv.visitVarInsn(ILOAD, 2);
    mv.visitVarInsn(LLOAD, 3);
    mv.visitVarInsn(LLOAD, 5);
    mv.visitVarInsn(LLOAD, 7);
    mv.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(BASE_CLASS), "<init>",
            MethodType.methodType(void.class, VarForm.class, boolean.class, long.class, long.class, long.class).toMethodDescriptorString(), false);
    //init dimensions
    for (int i = 0 ; i < dimensions ; i++) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 9);
        mv.visitLdcInsn(i);
        mv.visitInsn(LALOAD);
        mv.visitFieldInsn(PUTFIELD, implClassName, "dim" + i, "J");
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Source File: TestPrivateInterfaceMethodReflect.java From jdk8u-dev-jdk with GNU General Public License v2.0

5 votes

private byte[] loadClassData(String name) throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    switch (name) {
        case INTERFACE_NAME:
            cw.visit(V1_8, ACC_ABSTRACT | ACC_INTERFACE | ACC_PUBLIC, INTERFACE_NAME, null, "java/lang/Object", null);
            {
                mv = cw.visitMethod(ACC_PRIVATE, "privInstance", "()I", null, null);
                mv.visitCode();
                mv.visitLdcInsn(EXPECTED);
                mv.visitInsn(IRETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        case CLASS_NAME:
            cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME, null, "java/lang/Object", new String[]{INTERFACE_NAME});
            {
                mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
                mv.visitCode();
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
                mv.visitInsn(RETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        default:
            break;
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: TestOSRWithNonEmptyStack.java From jdk8u60 with GNU General Public License v2.0

5 votes

private static void generateTestMethod(ClassWriter classWriter) {
    MethodVisitor mv = classWriter.visitMethod(ACC_PUBLIC,
            TestOSRWithNonEmptyStack.METHOD_NAME, "()V", null, null);
    Label osrEntryPoint = new Label();

    mv.visitCode();
    // Push 'this' into stack before OSR entry point to bail out compilation
    mv.visitVarInsn(ALOAD, 0);
    // Setup loop counter
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 1);
    // Begin loop
    mv.visitLabel(osrEntryPoint);
    // Increment loop counter
    mv.visitVarInsn(ILOAD, 1);
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IADD);
    // Duplicate it for loop condition check
    mv.visitInsn(DUP);
    mv.visitVarInsn(ISTORE, 1);
    // Check loop condition
    mv.visitLdcInsn(TestOSRWithNonEmptyStack.ITERATIONS);
    mv.visitJumpInsn(IF_ICMPLT, osrEntryPoint);
    // Pop 'this'.
    mv.visitInsn(POP);
    mv.visitInsn(RETURN);

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

Source File: TestPrivateInterfaceMethodReflect.java From jdk8u-jdk with GNU General Public License v2.0

5 votes

private byte[] loadClassData(String name) throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    switch (name) {
        case INTERFACE_NAME:
            cw.visit(V1_8, ACC_ABSTRACT | ACC_INTERFACE | ACC_PUBLIC, INTERFACE_NAME, null, "java/lang/Object", null);
            {
                mv = cw.visitMethod(ACC_PRIVATE, "privInstance", "()I", null, null);
                mv.visitCode();
                mv.visitLdcInsn(EXPECTED);
                mv.visitInsn(IRETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        case CLASS_NAME:
            cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME, null, "java/lang/Object", new String[]{INTERFACE_NAME});
            {
                mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
                mv.visitCode();
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
                mv.visitInsn(RETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        default:
            break;
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: TestPrivateInterfaceMethodReflect.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

private byte[] loadClassData(String name) throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    switch (name) {
        case INTERFACE_NAME:
            cw.visit(V1_8, ACC_ABSTRACT | ACC_INTERFACE | ACC_PUBLIC, INTERFACE_NAME, null, "java/lang/Object", null);
            {
                mv = cw.visitMethod(ACC_PRIVATE, "privInstance", "()I", null, null);
                mv.visitCode();
                mv.visitLdcInsn(EXPECTED);
                mv.visitInsn(IRETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        case CLASS_NAME:
            cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME, null, "java/lang/Object", new String[]{INTERFACE_NAME});
            {
                mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
                mv.visitCode();
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
                mv.visitInsn(RETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        default:
            break;
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: UnsafeGetConstantField.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

void initField(MethodVisitor mv) {
    if (hasDefaultValue) {
        return; // Nothing to do
    }
    if (!isStatic()) {
        mv.visitVarInsn(ALOAD, 0);
    }
    mv.visitLdcInsn(type.value);
    mv.visitFieldInsn((isStatic() ? PUTSTATIC : PUTFIELD), className, FIELD_NAME, fieldDesc);
}

Source File: UnloadClass.java From LearningOfThinkInJava with Apache License 2.0

5 votes

public static void main(String[] args) throws NoSuchMethodException,SecurityException,
        IllegalAccessException,IllegalArgumentException,InvocationTargetException{
    ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_MAXS|ClassWriter.COMPUTE_FRAMES);
    cw.visit(V1_7,ACC_PUBLIC,"Example",null,"java/lang/Object",null);
    MethodVisitor mw=cw.visitMethod(ACC_PUBLIC,"<init>","()V",null,null);
    mw.visitVarInsn(ALOAD,0);
    mw.visitMethodInsn(INVOKESPECIAL,"java/lang/Object","<init>","()V");
    mw.visitInsn(RETURN);
    mw.visitMaxs(0,0);
    mw.visitEnd();
    mw=cw.visitMethod(ACC_PUBLIC+ACC_STATIC,"main","([Ljava/lang/String;)V",null,null);
    mw.visitFieldInsn(GETSTATIC,"java/lang/System","out","Ljava/io/PrintStream;");
    mw.visitLdcInsn("Hello world!");
    mw.visitMethodInsn(INVOKEVIRTUAL,"java/io/PrintStream","println","(Ljava/lang/String;)V");
    mw.visitInsn(RETURN);
    mw.visitMaxs(0,0);
    mw.visitEnd();
    byte[] code=cw.toByteArray();
    for(int i=0;i<1;i++){
        ClassLoader loader=UnloadClass.class.getClassLoader();
        Method m=ClassLoader.class.getDeclaredMethod("defineClass", String.class, byte[].class, int.class, int.class);
        m.setAccessible(true);
        m.invoke(loader,"Example",code,0,code.length);
        m.setAccessible(false);
        System.gc();
    }

}

Source File: TestOSRWithNonEmptyStack.java From openjdk-jdk8u with GNU General Public License v2.0

5 votes

private static void generateTestMethod(ClassWriter classWriter) {
    MethodVisitor mv = classWriter.visitMethod(ACC_PUBLIC,
            TestOSRWithNonEmptyStack.METHOD_NAME, "()V", null, null);
    Label osrEntryPoint = new Label();

    mv.visitCode();
    // Push 'this' into stack before OSR entry point to bail out compilation
    mv.visitVarInsn(ALOAD, 0);
    // Setup loop counter
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 1);
    // Begin loop
    mv.visitLabel(osrEntryPoint);
    // Increment loop counter
    mv.visitVarInsn(ILOAD, 1);
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IADD);
    // Duplicate it for loop condition check
    mv.visitInsn(DUP);
    mv.visitVarInsn(ISTORE, 1);
    // Check loop condition
    mv.visitLdcInsn(TestOSRWithNonEmptyStack.ITERATIONS);
    mv.visitJumpInsn(IF_ICMPLT, osrEntryPoint);
    // Pop 'this'.
    mv.visitInsn(POP);
    mv.visitInsn(RETURN);

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

Source File: StringConcatFactory.java From openjdk-jdk9 with GNU General Public License v2.0

5 votes

/**
 * The following method is copied from
 * org.objectweb.asm.commons.InstructionAdapter. Part of ASM: a very small
 * and fast Java bytecode manipulation framework.
 * Copyright (c) 2000-2005 INRIA, France Telecom All rights reserved.
 */
private static void iconst(MethodVisitor mv, final int cst) {
    if (cst >= -1 && cst <= 5) {
        mv.visitInsn(Opcodes.ICONST_0 + cst);
    } else if (cst >= Byte.MIN_VALUE && cst <= Byte.MAX_VALUE) {
        mv.visitIntInsn(Opcodes.BIPUSH, cst);
    } else if (cst >= Short.MIN_VALUE && cst <= Short.MAX_VALUE) {
        mv.visitIntInsn(Opcodes.SIPUSH, cst);
    } else {
        mv.visitLdcInsn(cst);
    }
}

Source File: LongType.java From openjdk-jdk8u-backup with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_LONG);
    return LONG;
}

Source File: LongType.java From openjdk-jdk9 with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_LONG);
    return LONG;
}

Source File: TestAMEnotNPE.java From jdk8u60 with GNU General Public License v2.0

4 votes

/**
 * The bytecodes for a class p/T defining a methods test() and test(11args)
 * that contain an invokeExact of a particular methodHandle, I.m.
 *
 * Test will be passed values that may imperfectly implement I,
 * and thus may in turn throw exceptions.
 *
 * @return
 * @throws Exception
 */
public static byte[] bytesForT() throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
            | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/T", null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "()I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I,11args)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "(BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitVarInsn(ILOAD, 3);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitVarInsn(ALOAD, 7);
        mv.visitVarInsn(ALOAD, 8);
        mv.visitVarInsn(ALOAD, 9);
        mv.visitVarInsn(ALOAD, 10);
        mv.visitVarInsn(ALOAD, 11);
        mv.visitVarInsn(ALOAD, 12);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Source File: IntType.java From openjdk-8 with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(ObjectClassGenerator.UNDEFINED_INT);
    return INT;
}

Source File: BooleanType.java From jdk8u_nashorn with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_INT);
    return BOOLEAN;
}

Source File: BooleanType.java From openjdk-jdk9 with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_INT);
    return BOOLEAN;
}

Source File: NumberType.java From jdk8u_nashorn with GNU General Public License v2.0

4 votes

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_DOUBLE);
    return NUMBER;
}

Source File: Proxy.java From totallylazy with Apache License 2.0

4 votes

private static void loadMethod(MethodVisitor mv, String superClass, String methodName, String methodDescriptor) {
    mv.visitLdcInsn(superClass);
    mv.visitLdcInsn(methodName);
    mv.visitLdcInsn(methodDescriptor);
    mv.visitMethodInsn(INVOKESTATIC, "com/googlecode/totallylazy/reflection/Methods", "method", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/reflect/Method;", false);
}

Source File: TestAMEnotNPE.java From openjdk-8-source with GNU General Public License v2.0

4 votes

/**
 * Returns the bytes for a class with name d_name (presumably "D" in some
 * package), extending some class with name sub_what, implementing p.I,
 * and defining two methods m() and m(11args) with access method_acc.
 *
 * @param d_name      Name of class that is defined
 * @param sub_what    Name of class that it extends
 * @param method_acc  Accessibility of method(s) m in defined class.
 * @return
 * @throws Exception
 */
public static byte[] bytesForSomeDsubSomethingSomeAccess
        (String d_name, String sub_what, int method_acc)
        throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
            | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;
    String[] interfaces = {"p/I"};

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, d_name, null, sub_what, interfaces);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, sub_what, "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // int m() {return 3;}
    {
        mv = cw.visitMethod(method_acc, "m", "()I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Integer(3));
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // int m(11args) {return 3;}
    {
        mv = cw.visitMethod(method_acc, "m", "(BCSIJ"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + ")I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Integer(3));
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Source File: TestConcreteClassWithAbstractMethod.java From openjdk-jdk9 with GNU General Public License v2.0

4 votes

public static byte[] dumpT3() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "p1/T3", null, "p1/T2", null);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T2", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T3.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 2);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "p1/T3");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "p1/T3", "<init>", "()V", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "p1/T2", "m", "()I", false);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

Source File: TestAMEnotNPE.java From openjdk-8-source with GNU General Public License v2.0

4 votes

/**
 * The bytecodes for a class p/T defining a methods test() and test(11args)
 * that contain an invokeExact of a particular methodHandle, I.m.
 *
 * Test will be passed values that may imperfectly implement I,
 * and thus may in turn throw exceptions.
 *
 * @return
 * @throws Exception
 */
public static byte[] bytesForT() throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
            | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/T", null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "()I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I,11args)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "(BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitVarInsn(ILOAD, 3);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitVarInsn(ALOAD, 7);
        mv.visitVarInsn(ALOAD, 8);
        mv.visitVarInsn(ALOAD, 9);
        mv.visitVarInsn(ALOAD, 10);
        mv.visitVarInsn(ALOAD, 11);
        mv.visitVarInsn(ALOAD, 12);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Java Code Examples for jdk.internal.org.objectweb.asm.MethodVisitor#visitLdcInsn()