--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/ThreadContext.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,57 @@
+/*
+ * 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.debugger;
+
+/** This is a placeholder interface for a thread's context, containing
+    only integer registers (no floating-point ones). What it contains
+    is platform-dependent. Not all registers are guaranteed to be
+    present in the context or read from the target process in all
+    situations. However, the routines in it are exposed to allow
+    platform-independent iteration. */
+
+public interface ThreadContext {
+  /** Number of integer registers in the context */
+  public int getNumRegisters();
+
+  /** Get the name of the specified register (0..getNumRegisters() -
+      1) */
+  public String getRegisterName(int i);
+
+  /** Get the value of the specified register (0..getNumRegisters() -
+      1) */
+  public long getRegister(int index);
+
+  /** Set the value of the specified register (0..getNumRegisters() -
+      1) */
+  public void setRegister(int index, long value);
+
+  /** Get the value of the specified register (0..getNumRegisters() -
+      1) as an Address */
+  public Address getRegisterAsAddress(int index);
+
+  /** Set the value of the specified register (0..getNumRegisters() -
+      1) as an Address */
+  public void setRegisterAsAddress(int index, Address value);
+}