--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/InterpretedVFrame.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,158 @@
+/*
+ * Copyright 2000-2001 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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.interpreter.*;
+import sun.jvm.hotspot.oops.*;
+import sun.jvm.hotspot.utilities.*;
+
+public class InterpretedVFrame extends JavaVFrame {
+  /** JVM state */
+  public Method getMethod() {
+    return getFrame().getInterpreterFrameMethod();
+  }
+
+  public StackValueCollection getLocals() {
+    Method m = getMethod();
+
+    int length = (int) m.getMaxLocals();
+
+    if (m.isNative()) {
+      // If the method is native, getMaxLocals is not telling the truth.
+      // maxlocals then equals the size of parameters
+      length = (int) m.getSizeOfParameters();
+    }
+
+    StackValueCollection result = new StackValueCollection(length);
+
+    // Get oopmap describing oops and int for current bci
+    OopMapCacheEntry oopMask = getMethod().getMaskFor(getBCI());
+
+    // handle locals
+    for(int i = 0; i < length; i++) {
+      // Find stack location
+      Address addr = addressOfLocalAt(i);
+
+      // Depending on oop/int put it in the right package
+      StackValue sv;
+      if (oopMask.isOop(i)) {
+        // oop value
+        sv = new StackValue(addr.getOopHandleAt(0));
+      } else {
+        // integer
+        // Fetch a signed integer the size of a stack slot
+        sv = new StackValue(addr.getCIntegerAt(0, VM.getVM().getAddressSize(), false));
+      }
+      result.add(sv);
+    }
+
+    return result;
+  }
+
+  public StackValueCollection getExpressions() {
+    int length = getFrame().getInterpreterFrameExpressionStackSize();
+
+    if (getMethod().isNative()) {
+      // If the method is native, there is no expression stack
+      length = 0;
+    }
+
+    int nofLocals = (int) getMethod().getMaxLocals();
+    StackValueCollection result = new StackValueCollection(length);
+
+    // Get oopmap describing oops and int for current bci
+    OopMapCacheEntry oopMask = getMethod().getMaskFor(getBCI());
+
+    for(int i = 0; i < length; i++) {
+      // Find stack location
+      Address addr = addressOfExpressionStackAt(i);
+
+      // Depending on oop/int put it in the right package
+      StackValue sv;
+      if (oopMask.isOop(i + nofLocals)) {
+        // oop value
+        sv = new StackValue(addr.getOopHandleAt(0));
+      } else {
+        // integer
+        // Fetch a signed integer the size of a stack slot
+        sv = new StackValue(addr.getCIntegerAt(0, VM.getVM().getAddressSize(), false));
+      }
+      result.add(sv);
+    }
+
+    return result;
+  }
+
+  /** Returns List<MonitorInfo> */
+  public List   getMonitors() {
+    List result = new ArrayList(5);
+    for (BasicObjectLock current = getFrame().interpreterFrameMonitorEnd();
+         current.address().lessThan(getFrame().interpreterFrameMonitorBegin().address());
+         current = getFrame().nextMonitorInInterpreterFrame(current)) {
+      result.add(new MonitorInfo(current.obj(), current.lock()));
+    }
+    return result;
+  }
+
+  /** Test operation */
+  public boolean isInterpretedFrame() { return true; }
+
+  /** Package-internal constructor */
+  InterpretedVFrame(Frame fr, RegisterMap regMap, JavaThread thread) {
+    super(fr, regMap, thread);
+  }
+
+  /** Accessor for Byte Code Index (NOTE: access to BCP is not allowed
+      in this system; see Frame.java) */
+  public int getBCI() {
+    return getFrame().getInterpreterFrameBCI();
+  }
+
+  /** Setter for Byte Code Index */
+  // FIXME: not yet implementable
+  //  public void setBCI(int bci) {
+  //    getFrame().setInterpreterFrameBCI(bci);
+  //  }
+
+  public void verify() {
+  }
+
+  //--------------------------------------------------------------------------------
+  // Internals only below this point
+  //
+
+  private Address addressOfLocalAt(int index) {
+    if (Assert.ASSERTS_ENABLED) {
+      Assert.that(getFrame().isInterpretedFrame(), "frame should be an interpreted frame");
+    }
+    return fr.addressOfInterpreterFrameLocal(index);
+  }
+
+  private Address addressOfExpressionStackAt(int index) {
+    return fr.addressOfInterpreterFrameExpressionStackSlot(index);
+  }
+}