VMFrame.java: Update to Classpath 0.91.

        * gnu/classpath/jdwp/VMFrame.java: Update to Classpath 0.91.
        * gnu/classpath/jdwp/VMIdManager.java: Likewise.
        * gnu/classpath/jdwp/VMMethod.java: Likewise.
        * gnu/classpath/jdwp/VMVirtualMachine: Likewise.
        * gnu/classpath/jdwp/natVMFrame.java: New file.
        * gnu/classpath/jdwp/natVMMethod.java: New file.
        * gnu/classpath/jdwp/natVMVirtualMachine.java: New file.
        * Makefile.am (nat_source_files): Add new filles.
        * Makefile.in: Regenerated.

From-SVN: r115934

10 files changed, 419 insertions, 51 deletions

diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 8b10aab..485aa7f 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,15 @@
+2006-08-01  Keith Seitz  <keiths@redhat.com>
+
+	* gnu/classpath/jdwp/VMFrame.java: Update to Classpath 0.91.
+	* gnu/classpath/jdwp/VMIdManager.java: Likewise.
+	* gnu/classpath/jdwp/VMMethod.java: Likewise.
+	* gnu/classpath/jdwp/VMVirtualMachine: Likewise.
+	* gnu/classpath/jdwp/natVMFrame.java: New file.
+	* gnu/classpath/jdwp/natVMMethod.java: New file.
+	* gnu/classpath/jdwp/natVMVirtualMachine.java: New file.
+	* Makefile.am (nat_source_files): Add new filles.
+	* Makefile.in: Regenerated.
+
 2006-08-03  Tom Tromey  <tromey@redhat.com>
 
 	* jvmti.cc (REQUIRE_PHASE): New macro.
diff --git a/libjava/Makefile.am b/libjava/Makefile.am
index 54ab516..bf9f7a0 100644
--- a/libjava/Makefile.am
+++ b/libjava/Makefile.am
@@ -771,6 +771,9 @@ gkeytool_DEPENDENCIES = libgcj-tools.la
 ## This lists all the C++ source files in subdirectories.
 nat_source_files = \
 gnu/classpath/natSystemProperties.cc \
+gnu/classpath/jdwp/natVMFrame.cc \
+gnu/classpath/jdwp/natVMMethod.cc \
+gnu/classpath/jdwp/natVMVirtualMachine.cc \
 gnu/gcj/natCore.cc \
 gnu/gcj/convert/JIS0208_to_Unicode.cc \
 gnu/gcj/convert/JIS0212_to_Unicode.cc \
diff --git a/libjava/Makefile.in b/libjava/Makefile.in
index 06831cd..57649f0 100644
--- a/libjava/Makefile.in
+++ b/libjava/Makefile.in
@@ -252,7 +252,10 @@ am__DEPENDENCIES_4 =
 am__libgcj_la_SOURCES_DIST = prims.cc jni.cc jvmti.cc exception.cc \
 	stacktrace.cc link.cc defineclass.cc interpret.cc verify.cc \
 	java/lang/Class.java java/lang/Object.java \
-	gnu/classpath/natSystemProperties.cc gnu/gcj/natCore.cc \
+	gnu/classpath/natSystemProperties.cc \
+	gnu/classpath/jdwp/natVMFrame.cc \
+	gnu/classpath/jdwp/natVMMethod.cc \
+	gnu/classpath/jdwp/natVMVirtualMachine.cc gnu/gcj/natCore.cc \
 	gnu/gcj/convert/JIS0208_to_Unicode.cc \
 	gnu/gcj/convert/JIS0212_to_Unicode.cc \
 	gnu/gcj/convert/Unicode_to_JIS.cc gnu/gcj/convert/natIconv.cc \
@@ -295,7 +298,10 @@ am__libgcj_la_SOURCES_DIST = prims.cc jni.cc jvmti.cc exception.cc \
 	boehm.cc nogc.cc posix.cc win32.cc darwin.cc posix-threads.cc \
 	win32-threads.cc no-threads.cc
 am__objects_2 = gnu/classpath/natSystemProperties.lo \
-	gnu/gcj/natCore.lo gnu/gcj/convert/JIS0208_to_Unicode.lo \
+	gnu/classpath/jdwp/natVMFrame.lo \
+	gnu/classpath/jdwp/natVMMethod.lo \
+	gnu/classpath/jdwp/natVMVirtualMachine.lo gnu/gcj/natCore.lo \
+	gnu/gcj/convert/JIS0208_to_Unicode.lo \
 	gnu/gcj/convert/JIS0212_to_Unicode.lo \
 	gnu/gcj/convert/Unicode_to_JIS.lo gnu/gcj/convert/natIconv.lo \
 	gnu/gcj/convert/natInput_EUCJIS.lo \
@@ -618,7 +624,6 @@ bindir = @bindir@
 build = @build@
 build_alias = @build_alias@
 build_cpu = @build_cpu@
-build_libsubdir = @build_libsubdir@
 build_os = @build_os@
 build_subdir = @build_subdir@
 build_vendor = @build_vendor@
@@ -7085,6 +7090,9 @@ gkeytool_LDADD = -L$(here)/.libs libgcj-tools.la
 gkeytool_DEPENDENCIES = libgcj-tools.la
 nat_source_files = \
 gnu/classpath/natSystemProperties.cc \
+gnu/classpath/jdwp/natVMFrame.cc \
+gnu/classpath/jdwp/natVMMethod.cc \
+gnu/classpath/jdwp/natVMVirtualMachine.cc \
 gnu/gcj/natCore.cc \
 gnu/gcj/convert/JIS0208_to_Unicode.cc \
 gnu/gcj/convert/JIS0212_to_Unicode.cc \
@@ -7417,6 +7425,19 @@ gnu/classpath/$(DEPDIR)/$(am__dirstamp):
 	@: > gnu/classpath/$(DEPDIR)/$(am__dirstamp)
 gnu/classpath/natSystemProperties.lo: gnu/classpath/$(am__dirstamp) \
 	gnu/classpath/$(DEPDIR)/$(am__dirstamp)
+gnu/classpath/jdwp/$(am__dirstamp):
+	@$(mkdir_p) gnu/classpath/jdwp
+	@: > gnu/classpath/jdwp/$(am__dirstamp)
+gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp):
+	@$(mkdir_p) gnu/classpath/jdwp/$(DEPDIR)
+	@: > gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp)
+gnu/classpath/jdwp/natVMFrame.lo: gnu/classpath/jdwp/$(am__dirstamp) \
+	gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp)
+gnu/classpath/jdwp/natVMMethod.lo: gnu/classpath/jdwp/$(am__dirstamp) \
+	gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp)
+gnu/classpath/jdwp/natVMVirtualMachine.lo:  \
+	gnu/classpath/jdwp/$(am__dirstamp) \
+	gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp)
 gnu/gcj/$(am__dirstamp):
 	@$(mkdir_p) gnu/gcj
 	@: > gnu/gcj/$(am__dirstamp)
@@ -7781,6 +7802,12 @@ mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
 	-rm -f classpath/tools/libgcj_tools_la-tools.$(OBJEXT)
 	-rm -f classpath/tools/libgcj_tools_la-tools.lo
+	-rm -f gnu/classpath/jdwp/natVMFrame.$(OBJEXT)
+	-rm -f gnu/classpath/jdwp/natVMFrame.lo
+	-rm -f gnu/classpath/jdwp/natVMMethod.$(OBJEXT)
+	-rm -f gnu/classpath/jdwp/natVMMethod.lo
+	-rm -f gnu/classpath/jdwp/natVMVirtualMachine.$(OBJEXT)
+	-rm -f gnu/classpath/jdwp/natVMVirtualMachine.lo
 	-rm -f gnu/classpath/natSystemProperties.$(OBJEXT)
 	-rm -f gnu/classpath/natSystemProperties.lo
 	-rm -f gnu/gcj/convert/JIS0208_to_Unicode.$(OBJEXT)
@@ -7976,6 +8003,9 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/win32.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@classpath/tools/$(DEPDIR)/libgcj_tools_la-tools.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@gnu/classpath/$(DEPDIR)/natSystemProperties.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@gnu/classpath/jdwp/$(DEPDIR)/natVMFrame.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@gnu/classpath/jdwp/$(DEPDIR)/natVMMethod.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@gnu/classpath/jdwp/$(DEPDIR)/natVMVirtualMachine.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@gnu/gcj/$(DEPDIR)/natCore.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@gnu/gcj/convert/$(DEPDIR)/JIS0208_to_Unicode.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@gnu/gcj/convert/$(DEPDIR)/JIS0212_to_Unicode.Plo@am__quote@
@@ -8313,6 +8343,7 @@ clean-libtool:
 	-rm -rf .libs _libs
 	-rm -rf classpath/tools/.libs classpath/tools/_libs
 	-rm -rf gnu/classpath/.libs gnu/classpath/_libs
+	-rm -rf gnu/classpath/jdwp/.libs gnu/classpath/jdwp/_libs
 	-rm -rf gnu/gcj/.libs gnu/gcj/_libs
 	-rm -rf gnu/gcj/convert/.libs gnu/gcj/convert/_libs
 	-rm -rf gnu/gcj/io/.libs gnu/gcj/io/_libs
@@ -8716,6 +8747,8 @@ distclean-generic:
 	-rm -f classpath/tools/$(am__dirstamp)
 	-rm -f gnu/classpath/$(DEPDIR)/$(am__dirstamp)
 	-rm -f gnu/classpath/$(am__dirstamp)
+	-rm -f gnu/classpath/jdwp/$(DEPDIR)/$(am__dirstamp)
+	-rm -f gnu/classpath/jdwp/$(am__dirstamp)
 	-rm -f gnu/gcj/$(DEPDIR)/$(am__dirstamp)
 	-rm -f gnu/gcj/$(am__dirstamp)
 	-rm -f gnu/gcj/convert/$(DEPDIR)/$(am__dirstamp)
@@ -8777,7 +8810,7 @@ clean-am: clean-binPROGRAMS clean-dbexecLTLIBRARIES clean-generic \
 
 distclean: distclean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-	-rm -rf ./$(DEPDIR) classpath/tools/$(DEPDIR) gnu/classpath/$(DEPDIR) gnu/gcj/$(DEPDIR) gnu/gcj/convert/$(DEPDIR) gnu/gcj/io/$(DEPDIR) gnu/gcj/runtime/$(DEPDIR) gnu/gcj/tools/gcj_dbtool/$(DEPDIR) gnu/gcj/util/$(DEPDIR) gnu/gcj/xlib/$(DEPDIR) gnu/java/lang/$(DEPDIR) gnu/java/net/$(DEPDIR) gnu/java/net/protocol/core/$(DEPDIR) gnu/java/nio/$(DEPDIR) gnu/java/nio/channels/$(DEPDIR) java/io/$(DEPDIR) java/lang/$(DEPDIR) java/lang/ref/$(DEPDIR) java/lang/reflect/$(DEPDIR) java/net/$(DEPDIR) java/nio/$(DEPDIR) java/nio/channels/$(DEPDIR) java/security/$(DEPDIR) java/text/$(DEPDIR) java/util/$(DEPDIR) java/util/logging/$(DEPDIR) java/util/zip/$(DEPDIR)
+	-rm -rf ./$(DEPDIR) classpath/tools/$(DEPDIR) gnu/classpath/$(DEPDIR) gnu/classpath/jdwp/$(DEPDIR) gnu/gcj/$(DEPDIR) gnu/gcj/convert/$(DEPDIR) gnu/gcj/io/$(DEPDIR) gnu/gcj/runtime/$(DEPDIR) gnu/gcj/tools/gcj_dbtool/$(DEPDIR) gnu/gcj/util/$(DEPDIR) gnu/gcj/xlib/$(DEPDIR) gnu/java/lang/$(DEPDIR) gnu/java/net/$(DEPDIR) gnu/java/net/protocol/core/$(DEPDIR) gnu/java/nio/$(DEPDIR) gnu/java/nio/channels/$(DEPDIR) java/io/$(DEPDIR) java/lang/$(DEPDIR) java/lang/ref/$(DEPDIR) java/lang/reflect/$(DEPDIR) java/net/$(DEPDIR) java/nio/$(DEPDIR) java/nio/channels/$(DEPDIR) java/security/$(DEPDIR) java/text/$(DEPDIR) java/util/$(DEPDIR) java/util/logging/$(DEPDIR) java/util/zip/$(DEPDIR)
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-libtool distclean-local distclean-tags
@@ -8808,7 +8841,7 @@ installcheck-am:
 maintainer-clean: maintainer-clean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -rf $(top_srcdir)/autom4te.cache
-	-rm -rf ./$(DEPDIR) classpath/tools/$(DEPDIR) gnu/classpath/$(DEPDIR) gnu/gcj/$(DEPDIR) gnu/gcj/convert/$(DEPDIR) gnu/gcj/io/$(DEPDIR) gnu/gcj/runtime/$(DEPDIR) gnu/gcj/tools/gcj_dbtool/$(DEPDIR) gnu/gcj/util/$(DEPDIR) gnu/gcj/xlib/$(DEPDIR) gnu/java/lang/$(DEPDIR) gnu/java/net/$(DEPDIR) gnu/java/net/protocol/core/$(DEPDIR) gnu/java/nio/$(DEPDIR) gnu/java/nio/channels/$(DEPDIR) java/io/$(DEPDIR) java/lang/$(DEPDIR) java/lang/ref/$(DEPDIR) java/lang/reflect/$(DEPDIR) java/net/$(DEPDIR) java/nio/$(DEPDIR) java/nio/channels/$(DEPDIR) java/security/$(DEPDIR) java/text/$(DEPDIR) java/util/$(DEPDIR) java/util/logging/$(DEPDIR) java/util/zip/$(DEPDIR)
+	-rm -rf ./$(DEPDIR) classpath/tools/$(DEPDIR) gnu/classpath/$(DEPDIR) gnu/classpath/jdwp/$(DEPDIR) gnu/gcj/$(DEPDIR) gnu/gcj/convert/$(DEPDIR) gnu/gcj/io/$(DEPDIR) gnu/gcj/runtime/$(DEPDIR) gnu/gcj/tools/gcj_dbtool/$(DEPDIR) gnu/gcj/util/$(DEPDIR) gnu/gcj/xlib/$(DEPDIR) gnu/java/lang/$(DEPDIR) gnu/java/net/$(DEPDIR) gnu/java/net/protocol/core/$(DEPDIR) gnu/java/nio/$(DEPDIR) gnu/java/nio/channels/$(DEPDIR) java/io/$(DEPDIR) java/lang/$(DEPDIR) java/lang/ref/$(DEPDIR) java/lang/reflect/$(DEPDIR) java/net/$(DEPDIR) java/nio/$(DEPDIR) java/nio/channels/$(DEPDIR) java/security/$(DEPDIR) java/text/$(DEPDIR) java/util/$(DEPDIR) java/util/logging/$(DEPDIR) java/util/zip/$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
diff --git a/libjava/gnu/classpath/jdwp/VMFrame.java b/libjava/gnu/classpath/jdwp/VMFrame.java
index 840ca09..cd21302 100644
--- a/libjava/gnu/classpath/jdwp/VMFrame.java
+++ b/libjava/gnu/classpath/jdwp/VMFrame.java
@@ -76,14 +76,14 @@ public class VMFrame
    * 
    * @param slot the slot containing the variable
    */
-  public Object getValue(int slot) { return null; }
+  public native Object getValue(int slot);
 
   /**
    * Assigns the given variable to the given value. 
    * @param slot The slot which contains the variable
    * @param value The value to assign the variable to
    */
-  public void setValue(int slot, Object value) { }
+  public native void setValue(int slot, Object value);
 
   /**
    * Get the object which is represented by 'this' in the context of the frame,
diff --git a/libjava/gnu/classpath/jdwp/VMIdManager.java b/libjava/gnu/classpath/jdwp/VMIdManager.java
index 23cbb7b..8d423e9 100644
--- a/libjava/gnu/classpath/jdwp/VMIdManager.java
+++ b/libjava/gnu/classpath/jdwp/VMIdManager.java
@@ -1,7 +1,7 @@
 /* VMIdManager.java -- A reference/example implementation of a manager for
    JDWP object/reference type IDs
 
-   Copyright (C) 2005 Free Software Foundation
+   Copyright (C) 2005, 2006 Free Software Foundation
 
 This file is part of GNU Classpath.
 
@@ -48,11 +48,9 @@ import gnu.classpath.jdwp.id.*;
 import java.lang.ref.Reference;
 import java.lang.ref.ReferenceQueue;
 import java.lang.ref.SoftReference;
-import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.HashMap;
 import java.util.Hashtable;
-import java.util.Iterator;
 
 /**
  * This class manages objects and referencetypes that are reported
@@ -76,6 +74,10 @@ import java.util.Iterator;
  * <b>NOTE:</b> All IDs handled by the ID manager (all object and reference
  * type IDs) are assumed to be of type <code>long</code>.
  *
+ * <b>NOTE:</b> This class does not manage virtual machine-specific types,
+ * like methods, fields, and frames. These already have unique IDs within
+ * the virtual machine and do not need further abstraction here.
+ *
  * @author Keith Seitz  (keiths@redhat.com)
  */
 public class VMIdManager
@@ -99,9 +101,6 @@ public class VMIdManager
       // ObjectId and ArrayId are special cases. See newObjectId.
       _idList.put (ClassLoaderId.typeClass, ClassLoaderId.class);
       _idList.put (ClassObjectId.typeClass, ClassObjectId.class);
-      //_idList.put (FieldId.typeClass, FieldId.class);
-      //_idList.put (FrameId.typeClass, FrameId.class);
-      //_idList.put (MethodId.typeClass, MethodId.class);
       _idList.put (StringId.typeClass, StringId.class);
       _idList.put (ThreadId.typeClass, ThreadId.class);
       _idList.put (ThreadGroupId.typeClass, ThreadGroupId.class);
@@ -110,7 +109,7 @@ public class VMIdManager
     /**
      * Returns a new id for the given object
      *
-     * @param object  the object for which an id is desired
+     * @param obj  SoftReference of the object for which an id is desired
      * @returns a suitable object id
      */
     public static ObjectId newObjectId (SoftReference obj)
@@ -170,7 +169,7 @@ public class VMIdManager
     /**
      * Returns a new reference type id for the given class
      *
-     * @param clazz  the <code>Class</code> for which an id is desired
+     * @param ref  SoftReference to the desired type
      * @returns a suitable reference type id or null when the
      * reference is cleared.
      */
@@ -187,6 +186,7 @@ public class VMIdManager
 	id = new InterfaceReferenceTypeId ();
       else
 	id = new ClassReferenceTypeId ();
+      id.setReference (ref);
       synchronized (_ridLock)
 	{
 	  id.setId (++_lastRid);
diff --git a/libjava/gnu/classpath/jdwp/VMMethod.java b/libjava/gnu/classpath/jdwp/VMMethod.java
index a4bbb51..d345bc1 100644
--- a/libjava/gnu/classpath/jdwp/VMMethod.java
+++ b/libjava/gnu/classpath/jdwp/VMMethod.java
@@ -103,17 +103,17 @@ public class VMMethod
   /**
    * Returns the name of this method
    */
-  public String getName() { return null; }
+  public native String getName();
 
   /**
    * Returns the signature of this method
    */
-  public String getSignature() { return null; }
+  public native String getSignature();
 
   /**
    * Returns the method's modifier flags
    */
-  public int getModifiers() { return -1; }
+  public native int getModifiers();
 
   /**
    * "Returns line number information for the method, if present. The line
@@ -125,8 +125,8 @@ public class VMMethod
    * @return the line table
    * @throws JdwpException
    */
-  public LineTable getLineTable()
-  { return null; }
+  public native LineTable getLineTable()
+    throws JdwpException;
 
   /**
    * "Returns variable information for the method. The variable table
@@ -137,8 +137,8 @@ public class VMMethod
    * @return the variable table
    * @throws JdwpException
    */
-  public VariableTable getVariableTable()
-  { return null; }
+  public native VariableTable getVariableTable()
+    throws JdwpException;
 
   /**
    * Returns a string representation of this method (not
diff --git a/libjava/gnu/classpath/jdwp/VMVirtualMachine.java b/libjava/gnu/classpath/jdwp/VMVirtualMachine.java
index ac81d95..d4985bf 100644
--- a/libjava/gnu/classpath/jdwp/VMVirtualMachine.java
+++ b/libjava/gnu/classpath/jdwp/VMVirtualMachine.java
@@ -62,7 +62,8 @@ public class VMVirtualMachine
    *
    * @param  thread  the thread to suspend
    */
-  public static void suspendThread (Thread thread) { }
+  public static native void suspendThread (Thread thread)
+    throws JdwpException;
 
   /**
    * Suspend all threads
@@ -114,7 +115,8 @@ public class VMVirtualMachine
    *
    * @param  thread  the thread to resume
    */
-  public static void resumeThread (Thread thread) { }
+  public static native void resumeThread (Thread thread)
+    throws JdwpException;
 
   /**
    * Resume all threads. This simply decrements the thread's
@@ -164,17 +166,20 @@ public class VMVirtualMachine
    * @param  thread  the thread whose suspend count is desired
    * @return the number of times the thread has been suspended
    */
-  public static int getSuspendCount (Thread thread) { return -1; }
+  public static native int getSuspendCount (Thread thread)
+    throws JdwpException;
  
   /**
    * Returns a count of the number of loaded classes in the VM
    */
-  public static int getAllLoadedClassesCount () { return -1; }
+  public static native int getAllLoadedClassesCount ()
+    throws JdwpException;
 
   /**
    * Returns an iterator over all the loaded classes in the VM
    */
-  public static Iterator getAllLoadedClasses () { return null; }
+  public static native Iterator getAllLoadedClasses ()
+    throws JdwpException;
 
   /**
    * Returns the status of the given class
@@ -183,7 +188,8 @@ public class VMVirtualMachine
    * @return a flag containing the class's status
    * @see JdwpConstants.ClassStatus
    */
-  public static int getClassStatus (Class clazz) { return -1; }
+  public static native int getClassStatus (Class clazz)
+    throws JdwpException;
 
   /**
    * Returns all of the methods defined in the given class. This
@@ -192,8 +198,8 @@ public class VMVirtualMachine
    * @param  klass  the class whose methods are desired
    * @return an array of virtual machine methods
    */
-  public static VMMethod[] getAllClassMethods (Class klass)
-  { return null; }
+  public static native VMMethod[] getAllClassMethods (Class klass)
+    throws JdwpException;
 
   /**
    * A factory method for getting valid virtual machine methods
@@ -206,8 +212,8 @@ public class VMVirtualMachine
    *           in the class
    * @throws JdwpException for any other error
    */
-  public static VMMethod getClassMethod(Class klass, long id)
-  { return null; }
+  public static native VMMethod getClassMethod(Class klass, long id)
+    throws JdwpException;
 
   /**
    * Returns the thread's call stack
@@ -217,9 +223,9 @@ public class VMVirtualMachine
    * @param  length  number of frames to return (-1 for all frames)
    * @return a list of frames
    */
-  public static ArrayList getFrames (Thread thread, int strart,
+  public static native ArrayList getFrames (Thread thread, int start,
 					    int length)
-  { return null; }
+    throws JdwpException;
 
   /**
    * Returns the frame for a given thread with the frame ID in
@@ -231,8 +237,8 @@ public class VMVirtualMachine
    * @param  bb      buffer containing the frame's ID
    * @return the desired frame
    */
-  public static VMFrame getFrame (Thread thread, ByteBuffer bb)
-  { return null; }
+  public static native VMFrame getFrame (Thread thread, ByteBuffer bb)
+    throws JdwpException;
 
   /**
    * Returns the number of frames in the thread's stack
@@ -240,8 +246,8 @@ public class VMVirtualMachine
    * @param  thread  the thread for which to get a frame count
    * @return the number of frames in the thread's stack
    */
-  public static int getFrameCount (Thread thread)
-  { return -1; }
+  public static native int getFrameCount (Thread thread)
+    throws JdwpException;
 
 
   /**
@@ -251,8 +257,8 @@ public class VMVirtualMachine
    * @return integer status of the thread
    * @see JdwpConstants.ThreadStatus
    */
-  public static int getThreadStatus (Thread thread)
-  { return -1; }
+  public static native int getThreadStatus (Thread thread)
+    throws JdwpException;
 
   /**
    * Returns a list of all classes which this class loader has been
@@ -261,8 +267,8 @@ public class VMVirtualMachine
    * @param  cl  the class loader
    * @return a list of all visible classes
    */
-  public static ArrayList getLoadRequests (ClassLoader cl)
-  { return null; }
+  public static native ArrayList getLoadRequests (ClassLoader cl)
+    throws JdwpException;
 
   /**
    * Executes a method in the virtual machine
@@ -276,11 +282,11 @@ public class VMVirtualMachine
    *                     (instance methods only) "
    * @return a result object containing the results of the invocation
    */
-  public static MethodResult executeMethod (Object obj, Thread thread,
+  public static native MethodResult executeMethod (Object obj, Thread thread,
 					    Class clazz, Method method,
 					    Object[] values,
 					    boolean nonVirtual)
-  { return null; }
+    throws JdwpException;
 
   /**
    * "Returns the name of source file in which a reference type was declared"
@@ -289,8 +295,8 @@ public class VMVirtualMachine
    * @return a string containing the source file name; "no path information
    *         for the file is included"
    */
-  public static String getSourceFile (Class clazz)
-  { return null; }
+  public static native String getSourceFile (Class clazz)
+    throws JdwpException;
 
   /**
    * Register a request from the debugger
@@ -301,16 +307,16 @@ public class VMVirtualMachine
    * or do some internal work to set up the event notification (useful for
    * execution-related events like breakpoints, single-stepping, etc.).
    */
-  public static void registerEvent (EventRequest request)
-  { }
+  public static native void registerEvent (EventRequest request)
+    throws JdwpException;
 
   /**
    * Unregisters the given request
    *
    * @param  request  the request to unregister
    */
-  public static void unregisterEvent (EventRequest request)
-  { }
+  public static native void unregisterEvent (EventRequest request)
+    throws JdwpException;
 
 
   /**
@@ -318,5 +324,6 @@ public class VMVirtualMachine
    *
    * @param  kind  the type of events to clear
    */
-  public static void clearEvents (byte kind) { }
+  public static native void clearEvents (byte kind)
+    throws JdwpException;
 }
diff --git a/libjava/gnu/classpath/jdwp/natVMFrame.cc b/libjava/gnu/classpath/jdwp/natVMFrame.cc
new file mode 100644
index 0000000..de3b844
--- /dev/null
+++ b/libjava/gnu/classpath/jdwp/natVMFrame.cc
@@ -0,0 +1,26 @@
+// natFrame.cc -- native support for VMFrame.java
+
+/* Copyright (C) 2006 Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+#include <gcj/cni.h>
+
+#include <gnu/classpath/jdwp/VMFrame.h>
+
+using namespace java::lang;
+
+Object*
+gnu::classpath::jdwp::VMFrame::getValue (jint slot)
+{
+  return 0;
+}
+
+void
+gnu::classpath::jdwp::VMFrame::setValue (jint slot, Object* value)
+{
+}
diff --git a/libjava/gnu/classpath/jdwp/natVMMethod.cc b/libjava/gnu/classpath/jdwp/natVMMethod.cc
new file mode 100644
index 0000000..eb1d6fd
--- /dev/null
+++ b/libjava/gnu/classpath/jdwp/natVMMethod.cc
@@ -0,0 +1,47 @@
+// natVMMethod.cc -- native support for VMMethod
+
+/* Copyright (C) 2006 Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+#include <gcj/cni.h>
+
+#include <gnu/classpath/jdwp/VMMethod.h>
+#include <gnu/classpath/jdwp/util/LineTable.h>
+#include <gnu/classpath/jdwp/util/VariableTable.h>
+
+java::lang::String*
+gnu::classpath::jdwp::VMMethod::getName ()
+{
+  return NULL;
+}
+
+java::lang::String*
+gnu::classpath::jdwp::VMMethod::getSignature ()
+{
+  return NULL;
+}
+
+jint
+gnu::classpath::jdwp::VMMethod::getModifiers ()
+{
+  return 0;
+}
+
+gnu::classpath::jdwp::util::LineTable*
+gnu::classpath::jdwp::VMMethod::getLineTable ()
+{
+  return NULL;
+}
+
+
+gnu::classpath::jdwp::util::VariableTable*
+gnu::classpath::jdwp::VMMethod::getVariableTable ()
+{
+  return NULL;
+}
diff --git a/libjava/gnu/classpath/jdwp/natVMVirtualMachine.cc b/libjava/gnu/classpath/jdwp/natVMVirtualMachine.cc
new file mode 100644
index 0000000..ef4605b
--- /dev/null
+++ b/libjava/gnu/classpath/jdwp/natVMVirtualMachine.cc
@@ -0,0 +1,240 @@
+// natVMVirtualMachine.cc - native support for VMVirtualMachine
+
+/* Copyright (C) 2006 Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+#include <config.h>
+#include <gcj/cni.h>
+
+#include <java/lang/Class.h>
+#include <java/lang/ClassLoader.h>
+#include <java/lang/Thread.h>
+#include <java/nio/ByteBuffer.h>
+#include <java/util/ArrayList.h>
+#include <java/util/Iterator.h>
+
+#include <gnu/classpath/jdwp/VMFrame.h>
+#include <gnu/classpath/jdwp/VMMethod.h>
+#include <gnu/classpath/jdwp/VMVirtualMachine.h>
+#include <gnu/classpath/jdwp/event/EventRequest.h>
+#include <gnu/classpath/jdwp/util/MethodResult.h>
+
+using namespace java::lang;
+using namespace gnu::classpath::jdwp::event;
+using namespace gnu::classpath::jdwp::util;
+
+void
+gnu::classpath::jdwp::VMVirtualMachine ::suspendThread (Thread *thread)
+{
+}
+
+void
+gnu::classpath::jdwp::VMVirtualMachine::resumeThread (Thread *thread)
+{
+}
+
+jint
+gnu::classpath::jdwp::VMVirtualMachine::getSuspendCount (Thread *thread)
+{
+  return 0;
+}
+
+void
+gnu::classpath::jdwp::VMVirtualMachine::registerEvent (EventRequest *request)
+{
+  switch (request->getEventKind ())
+    {
+    case EventRequest::EVENT_SINGLE_STEP:
+      break;
+
+    case EventRequest::EVENT_BREAKPOINT:
+      break;
+
+    case EventRequest::EVENT_FRAME_POP:
+      break;
+
+    case EventRequest::EVENT_EXCEPTION:
+      break;
+
+    case EventRequest::EVENT_USER_DEFINED:
+      break;
+
+    case EventRequest::EVENT_THREAD_START:
+      break;
+
+    case EventRequest::EVENT_THREAD_END:
+      break;
+
+    case EventRequest::EVENT_CLASS_PREPARE:
+      break;
+
+    case EventRequest::EVENT_CLASS_LOAD:
+      break;
+
+    case EventRequest::EVENT_CLASS_UNLOAD:
+      break;
+
+    case EventRequest::EVENT_FIELD_ACCESS:
+      break;
+
+    case EventRequest::EVENT_FIELD_MODIFY:
+      break;
+
+    case EventRequest::EVENT_METHOD_ENTRY:
+      break;
+
+    case EventRequest::EVENT_METHOD_EXIT:
+      break;
+
+    case EventRequest::EVENT_VM_INIT:
+      break;
+      
+    case EventRequest::EVENT_VM_DEATH:
+      break;
+    }
+}
+
+void
+gnu::classpath::jdwp::VMVirtualMachine::unregisterEvent (EventRequest *request)
+{
+  switch (request->getEventKind ())
+    {
+    case EventRequest::EVENT_SINGLE_STEP:
+      break;
+
+    case EventRequest::EVENT_BREAKPOINT:
+      break;
+
+    case EventRequest::EVENT_FRAME_POP:
+      break;
+
+    case EventRequest::EVENT_EXCEPTION:
+      break;
+
+    case EventRequest::EVENT_USER_DEFINED:
+      break;
+
+    case EventRequest::EVENT_THREAD_START:
+      break;
+
+    case EventRequest::EVENT_THREAD_END:
+      break;
+	
+    case EventRequest::EVENT_CLASS_PREPARE:
+      break;
+
+    case EventRequest::EVENT_CLASS_LOAD:
+      break;
+
+    case EventRequest::EVENT_CLASS_UNLOAD:
+      break;
+
+    case EventRequest::EVENT_FIELD_ACCESS:
+      break;
+
+    case EventRequest::EVENT_FIELD_MODIFY:
+      break;
+
+    case EventRequest::EVENT_METHOD_ENTRY:
+      break;
+
+    case EventRequest::EVENT_METHOD_EXIT:
+      break;
+
+    case EventRequest::EVENT_VM_INIT:
+      break;
+      
+    case EventRequest::EVENT_VM_DEATH:
+      break;
+    }
+}
+
+void
+gnu::classpath::jdwp::VMVirtualMachine::clearEvents (jbyte kind)
+{
+}
+
+jint
+gnu::classpath::jdwp::VMVirtualMachine::getAllLoadedClassesCount (void)
+{
+  return 0;
+}
+
+java::util::Iterator *
+gnu::classpath::jdwp::VMVirtualMachine::getAllLoadedClasses (void)
+{
+  return NULL;
+}
+
+jint
+gnu::classpath::jdwp::VMVirtualMachine::getClassStatus (jclass klass)
+{
+  return 0;
+}
+
+JArray<gnu::classpath::jdwp::VMMethod *> *
+gnu::classpath::jdwp::VMVirtualMachine::getAllClassMethods (jclass klass)
+{
+  return NULL;
+}
+
+gnu::classpath::jdwp::VMMethod *
+gnu::classpath::jdwp::VMVirtualMachine::getClassMethod (jclass klass, jlong id)
+{
+  return NULL;
+}
+
+java::util::ArrayList *
+gnu::classpath::jdwp::VMVirtualMachine::getFrames (Thread *thread,
+						   jint start,
+						   jint length)
+{
+  return NULL;
+}
+
+gnu::classpath::jdwp::VMFrame *
+gnu::classpath::jdwp::VMVirtualMachine::getFrame (Thread *thread,
+						  ::java::nio::ByteBuffer *bb)
+{
+  return NULL;
+}
+
+jint
+gnu::classpath::jdwp::VMVirtualMachine::getFrameCount (Thread *thread)
+{
+  return 0;
+}
+
+jint
+gnu::classpath::jdwp::VMVirtualMachine::getThreadStatus (Thread *thread)
+{
+  return 0;
+}
+
+java::util::ArrayList *
+gnu::classpath::jdwp::VMVirtualMachine::getLoadRequests (ClassLoader *cl)
+{
+  return NULL;
+}
+
+MethodResult *
+gnu::classpath::jdwp::VMVirtualMachine::executeMethod (jobject obj,
+						       Thread *thread,
+						       jclass clazz,
+						       reflect::Method *method,
+						       jobjectArray values,
+						       jboolean nonVirtual)
+{
+  return NULL;
+}
+
+jstring
+gnu::classpath::jdwp::VMVirtualMachine::getSourceFile (jclass clazz)
+{
+  return NULL;
+}