How to use

visitMethodInsn

method

in

org.objectweb.asm.MethodVisitor

private void visitCallObjectHashCode(MethodVisitor mv) {
  mv.visitVarInsn(Opcodes.ALOAD, 0);
  String owner = "java/lang/Object";
  String name = "hashCode";
  String desc = "()I";
  mv.visitMethodInsn(Opcodes.INVOKESPECIAL, owner, name, desc, false);
  mv.visitInsn(Opcodes.IRETURN);
}

  @Override
  public void visitCode() {
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, START_METHOD, START_SIGNATURE, false);
    mv.visitCode();
  }
}

private void visitMethodStub(MethodVisitor mv) {
  mv.visitTypeInsn(Opcodes.NEW, "java/lang/RuntimeException");
  mv.visitInsn(Opcodes.DUP);
  mv.visitLdcInsn("Stub!");
  String owner = "java/lang/RuntimeException";
  String name = "<init>";
  String desc = "(Ljava/lang/String;)V";
  mv.visitMethodInsn(Opcodes.INVOKESPECIAL, owner, name, desc, false);
  mv.visitInsn(Opcodes.ATHROW);
}

private void visitInitStub(ClassDef classDef, MethodVisitor mv) {
  mv.visitCode();
  mv.visitVarInsn(Opcodes.ALOAD, 0);
  if (classDef.getSuperclass() != null) {
    String superName = stripName(classDef.getSuperclass());
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, superName, "<init>", "()V", false);
  }
  mv.visitInsn(Opcodes.RETURN);
  mv.visitMaxs(0, 0);
  mv.visitEnd();
}

@Override
public void visitCode() {
  mv.visitVarInsn(Opcodes.ALOAD, 1);
  mv.visitVarInsn(Opcodes.ALOAD, 2);
  if (httpservlet) {
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, START_SERVICE, START_SIGNATURE, false);
  } else {
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, START_FILTER, START_SIGNATURE, false);
  }
  statIdx = newLocal(Type.getType(Object.class));
  mv.visitVarInsn(Opcodes.ASTORE, statIdx);
  mv.visitLabel(startFinally);
  mv.visitVarInsn(Opcodes.ALOAD, statIdx);
  mv.visitVarInsn(Opcodes.ALOAD, 1);
  mv.visitVarInsn(Opcodes.ALOAD, 2);
  mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, REJECT, REJECT_SIGNATURE, false);
  Label end = new Label();
  mv.visitJumpInsn(IFNULL, end);
  mv.visitInsn(Opcodes.RETURN);
  mv.visitLabel(end);
  mv.visitCode();
}
@Override

bridgeWriter.visitMethodInsn(INVOKESPECIAL, declaringTypeReference.getInternalName(), methodName, overrideDescriptor, false);
pushReturnValue(bridgeWriter, returnType);
bridgeWriter.visitMaxs(DEFAULT_MAX_STACK, 1);
bridgeWriter.visitEnd();

@Override
public void visitCode() {
  mv.visitVarInsn(ALOAD, 0);
  mv.visitVarInsn(ALOAD, 1);
  mv.visitVarInsn(ALOAD, 2);
  mv.visitMethodInsn(INVOKESTATIC, "org/springsource/loaded/test/infra/RewriteReflectUtilsDefineClass",
      "defineClass",
      "(Ljava/lang/String;[BLjava/lang/ClassLoader;)[B");
  mv.visitVarInsn(ASTORE, 1);
}

private void genSwitchMethod(ClassVisitor cw, String typeName, String methodName, CB callback) {
  MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "()Ljava/lang/String;", null, null);
  mv.visitCode();
  mv.visitVarInsn(ALOAD, 0);
  mv.visitFieldInsn(GETFIELD, typeName, "idx", "I");
  Label def = new Label();
    mv.visitLabel(e.getValue());
    mv.visitLdcInsn(e.getKey());
    mv.visitInsn(ARETURN);
  mv.visitInsn(DUP);
  mv.visitLdcInsn("invalid idx");
  mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V");
  mv.visitInsn(ATHROW);
  mv.visitMaxs(-1, -1);
  mv.visitEnd();

private static void createShortObj(MethodVisitor mv, int argsPostion) {
  mv.visitTypeInsn(Opcodes.NEW, "java/lang/Short");
  mv.visitInsn(Opcodes.DUP);
  mv.visitVarInsn(Opcodes.ILOAD, argsPostion);
  mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Short", "<init>", "(S)V");
  mv.visitInsn(Opcodes.AASTORE);
}

  @Override
  public void visitCode() {
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TARGET, START_METHOD, START_SIGNATURE, false);
    mv.visitCode();
  }
}

mv.visitInsn(Opcodes.ACONST_NULL);
mv.visitVarInsn(Opcodes.ASTORE, 30);
mv.visitVarInsn(Opcodes.ALOAD, 2);
mv.visitJumpInsn(Opcodes.IFNULL, sqlIsNull);
mv.visitVarInsn(Opcodes.ALOAD, 2);
mv.visitVarInsn(Opcodes.ASTORE, 30);
mv.visitJumpInsn(Opcodes.GOTO, endIf);
mv.visitInsn(Opcodes.DUP);
mv.visitVarInsn(Opcodes.ALOAD, 4);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/mysql/jdbc/Buffer", "getByteBuffer", "()[B");
mv.visitLdcInsn("utf-8");
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/String", "<init>", "([BLjava/lang/String;)V");
mv.visitVarInsn(Opcodes.ASTORE, 30);
mv.visitVarInsn(Opcodes.ALOAD, 30);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, "com/taobao/profile/Profiler", "start4Mysql", "(Ljava/lang/String;ILjava/lang/String;Ljava/lang/String;)V");
mv.visitCode();

  @Override
  public void handleMethodTranslateException(Method method, DexMethodNode methodNode, MethodVisitor mv, Exception e) {
    // replace the generated code with
    // 'return new RuntimeException("D2jFail translate: xxxxxxxxxxxxx");'
    StringWriter s = new StringWriter();
    s.append("d2j fail translate: ");
    e.printStackTrace(new PrintWriter(s));
    String msg = s.toString();
    mv.visitTypeInsn(Opcodes.NEW, "java/lang/RuntimeException");
    mv.visitInsn(Opcodes.DUP);
    mv.visitLdcInsn(msg);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V");
    mv.visitInsn(Opcodes.ATHROW);
  }
}

@Override
public void visitMaxs(int maxStack, int maxLocals) {
  Label endFinally = new Label();
  mv.visitTryCatchBlock(startFinally, endFinally, endFinally, null);
  mv.visitLabel(endFinally);
  mv.visitInsn(DUP);
  int errIdx = newLocal(Type.getType(Throwable.class));
  mv.visitVarInsn(Opcodes.ASTORE, errIdx);
  mv.visitVarInsn(Opcodes.ALOAD, statIdx);
  mv.visitVarInsn(Opcodes.ALOAD, errIdx);
  mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_MAIN, END_METHOD, END_SIGNATURE, false);
  mv.visitInsn(ATHROW);
  mv.visitMaxs(maxStack + 8, maxLocals + 2);
}

private static void createCharObj(MethodVisitor mv, int argsPostion) {
  mv.visitTypeInsn(Opcodes.NEW, "java/lang/Character");
  mv.visitInsn(Opcodes.DUP);
  mv.visitVarInsn(Opcodes.ILOAD, argsPostion);
  mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Character", "<init>", "(C)V");
  mv.visitInsn(Opcodes.AASTORE);
}

  @Override
  public void visitCode() {
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, START_METHOD, START_SIGNATURE, false);
    mv.visitCode();
  }
}

AsmUtil.PUSH(mv, paramTypes.length);
mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");
mv.visitVarInsn(Opcodes.ASTORE, arrVarIdx);
for (int i = 0; i < paramTypes.length; i++) {
  Type tp = paramTypes[i];
  mv.visitVarInsn(Opcodes.ALOAD, arrVarIdx);
  AsmUtil.PUSH(mv, i);
  switch (tp.getSort()) {
  case Type.BOOLEAN:
    mv.visitVarInsn(Opcodes.ILOAD, sidx);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;",
        false);
    break;
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;", false);
    break;
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Character", "valueOf", "(C)Ljava/lang/Character;",
        false);
    break;
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;", false);
    break;
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;",
        false);
    break;
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);

  @Override
  public void visitMaxs(int maxStack, int maxLocals) {
    Label endFinally = new Label();
    mv.visitTryCatchBlock(startFinally, endFinally, endFinally, null);
    mv.visitLabel(endFinally);
    mv.visitInsn(DUP);
    int errIdx = newLocal(Type.getType(Throwable.class));
    mv.visitVarInsn(Opcodes.ASTORE, errIdx);
    mv.visitVarInsn(Opcodes.ALOAD, statIdx);
    mv.visitVarInsn(Opcodes.ALOAD, errIdx);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, END_METHOD, END_SIGNATURE, false);
    mv.visitInsn(ATHROW);
    mv.visitMaxs(maxStack + 8, maxLocals + 2);
  }
}

private static void createIntegerObj(MethodVisitor mv, int argsPostion) {
  mv.visitTypeInsn(Opcodes.NEW, "java/lang/Integer");
  mv.visitInsn(Opcodes.DUP);
  mv.visitVarInsn(Opcodes.ILOAD, argsPostion);
  mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Integer", "<init>", "(I)V");
  mv.visitInsn(Opcodes.AASTORE);
}

  @Override
  public void visitCode() {
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACEMAIN, START_METHOD, START_SIGNATURE, false);
    mv.visitCode();
  }
}

      mv.visitVarInsn(Opcodes.ILOAD, sidx);
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;",
          false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;", false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Character", "valueOf", "(C)Ljava/lang/Character;",
          false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;", false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;",
          false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Float", "valueOf", "(F)Ljava/lang/Float;", false);
      break;
      mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Double", "valueOf", "(D)Ljava/lang/Double;", false);
      break;
mv.visitMethodInsn(Opcodes.INVOKESTATIC, CLASS, METHOD, SIGNATURE, false);