--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/solaris_sparc/SolarisSPARCJavaThreadPDAccess.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2000-2006 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.solaris_sparc;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.debugger.sparc.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.runtime.sparc.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
+
+public class SolarisSPARCJavaThreadPDAccess implements JavaThreadPDAccess {
+  private static AddressField baseOfStackPointerField;
+  private static AddressField postJavaStateField;
+  private static AddressField osThreadField;
+  private static int          isPC;
+  private static int          hasFlushed;
+
+  // Field from OSThread
+  private static CIntegerField osThreadThreadIDField;
+
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) {
+    Type type = db.lookupType("JavaThread");
+    Type anchorType = db.lookupType("JavaFrameAnchor");
+
+    baseOfStackPointerField = type.getAddressField("_base_of_stack_pointer");
+    osThreadField           = type.getAddressField("_osthread");
+    hasFlushed              = db.lookupIntConstant("JavaFrameAnchor::flushed").intValue();
+
+    type = db.lookupType("OSThread");
+    osThreadThreadIDField   = type.getCIntegerField("_thread_id");
+  }
+
+  public    Address getLastJavaFP(Address addr) {
+        return null;
+
+  }
+
+  public    Address getLastJavaPC(Address addr) {
+    return null;
+  }
+
+  public Address getBaseOfStackPointer(Address addr) {
+    return baseOfStackPointerField.getValue(addr);
+  }
+
+  public Frame getLastFramePD(JavaThread thread, Address addr) {
+
+    // This assert doesn't work in the debugging case for threads
+    // which are running Java code and which haven't re-entered the
+    // runtime (e.g., through a Method.invoke() or otherwise). They
+    // haven't yet "decached" their last Java stack pointer to the
+    // thread.
+
+    //    if (Assert.ASSERTS_ENABLED) {
+    //      Assert.that(hasLastJavaFrame(), "must have last_Java_sp() when suspended");
+    //      // FIXME: add assertion about flushing register windows for runtime system
+    //      // (not appropriate for debugging system, though, unless at safepoin t)
+    //    }
+
+    // FIXME: I don't think this is necessary, but might be useful
+    // while debugging
+    if (thread.getLastJavaSP() == null) {
+      return null;
+    }
+
+    // sparc does a lazy window flush. The _flags field of the JavaFrameAnchor
+    // encodes whether the windows have flushed. Whenever the windows have flushed
+    // there will be a last_Java_pc.
+    // In a relective system we'd have to  do something to force the thread to flush
+    // its windows and give us the pc (or the younger_sp so we can find it ourselves)
+    // In a debugger situation (process or core) the flush should have happened and
+    // so if we don't have the younger sp we can find it
+    //
+    if (thread.getLastJavaPC() != null) {
+      return new SPARCFrame(SPARCFrame.biasSP(thread.getLastJavaSP()), thread.getLastJavaPC());
+    } else {
+      Frame top = getCurrentFrameGuess(thread, addr);
+      return new SPARCFrame(SPARCFrame.biasSP(thread.getLastJavaSP()),
+                            SPARCFrame.biasSP(SPARCFrame.findYoungerSP(top.getSP(), thread.getLastJavaSP())),
+                            false);
+    }
+
+
+  }
+
+  public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) {
+    return new SPARCRegisterMap(thread, updateMap);
+  }
+
+  public Frame getCurrentFrameGuess(JavaThread thread, Address addr) {
+    ThreadProxy t = getThreadProxy(addr);
+    SPARCThreadContext context = (SPARCThreadContext) t.getContext();
+    // For now, let's see what happens if we do a similar thing to
+    // what the runtime code does. I suspect this may cause us to lose
+    // the top frame from the stack.
+    Address sp = context.getRegisterAsAddress(SPARCThreadContext.R_SP);
+    Address pc = context.getRegisterAsAddress(SPARCThreadContext.R_PC);
+
+    if ((sp == null) || (pc == null)) {
+      // Problems (have not hit this case so far, but would be bad to continue if we did)
+      return null;
+    }
+
+    return new SPARCFrame(sp, pc);
+  }
+
+
+  public void printThreadIDOn(Address addr, PrintStream tty) {
+    tty.print(getThreadProxy(addr));
+  }
+
+  public Address getLastSP(Address addr) {
+    ThreadProxy t = getThreadProxy(addr);
+    SPARCThreadContext context = (SPARCThreadContext) t.getContext();
+    return SPARCFrame.unBiasSP(context.getRegisterAsAddress(SPARCThreadContext.R_SP));
+  }
+
+  public void printInfoOn(Address threadAddr, PrintStream tty) {
+  }
+
+  public ThreadProxy getThreadProxy(Address addr) {
+    // Fetch the OSThread (for now and for simplicity, not making a
+    // separate "OSThread" class in this package)
+    Address osThreadAddr = osThreadField.getValue(addr);
+    // Get the address of the thread ID from the OSThread
+    Address tidAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset());
+
+    JVMDebugger debugger = VM.getVM().getDebugger();
+    return debugger.getThreadForIdentifierAddress(tidAddr);
+  }
+
+
+}