--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/Arguments.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2004, 2006, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.runtime;
+
+import java.util.*;
+
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
+
+/** This class represent VM's Arguments class -- command line args, flags etc.*/
+public class Arguments {
+    static {
+        VM.registerVMInitializedObserver(new Observer() {
+            public void update(Observable o, Object data) {
+                initialize(VM.getVM().getTypeDataBase());
+            }
+        });
+    }
+
+    public static String getJVMFlags() {
+        return buildString(jvmFlagsField, jvmFlagsCount);
+    }
+
+    public static String getJVMArgs() {
+        return buildString(jvmArgsField, jvmArgsCount);
+    }
+
+    public static String getJavaCommand() {
+        return getString(javaCommandField);
+    }
+
+    // Internals only below this point
+
+    // Fields
+    private static AddressField jvmFlagsField;
+    private static AddressField jvmArgsField;
+    private static AddressField javaCommandField;
+    private static long jvmFlagsCount;
+    private static long jvmArgsCount;
+
+    private static synchronized void initialize(TypeDataBase db) {
+        Type argumentsType = db.lookupType("Arguments");
+        jvmFlagsField = argumentsType.getAddressField("_jvm_flags_array");
+        jvmArgsField = argumentsType.getAddressField("_jvm_args_array");
+        javaCommandField = argumentsType.getAddressField("_java_command");
+
+        jvmArgsCount = argumentsType.getCIntegerField("_num_jvm_args").getValue();
+        jvmFlagsCount = argumentsType.getCIntegerField("_num_jvm_flags").getValue();
+    }
+
+    private static String buildString(AddressField arrayField, long count) {
+        StringBuilder sb = new StringBuilder();
+        if (count > 0) {
+            sb.append(getStringAt(arrayField, 0));
+            for (long i = 1; i < count; i++) {
+                sb.append(" ");
+                sb.append(getStringAt(arrayField, i));
+            }
+        }
+        return sb.toString();
+    }
+
+    private static String getString(AddressField field) {
+        Address addr = field.getAddress();
+        return CStringUtilities.getString(addr);
+    }
+
+    private static String getStringAt(AddressField field, long index) {
+        Address addr = field.getAddress();
+        return CStringUtilities.getString(addr.getAddressAt(index * VM.getVM().getAddressSize()));
+    }
+}