--- a/src/share/vm/runtime/thread.hpp	Wed Mar 12 00:00:05 2014 +0100
+++ b/src/share/vm/runtime/thread.hpp	Tue Mar 11 18:45:59 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, 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
@@ -487,7 +487,7 @@
   // Apply "cld_f->do_cld" to CLDs that are otherwise not kept alive.
   //   Used by JavaThread::oops_do.
   // Apply "cf->do_code_blob" (if !NULL) to all code blobs active in frames
-  virtual void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  virtual void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
   // Handles the parallel case for the method below.
 private:
@@ -929,7 +929,12 @@
   static void collect_counters(typeArrayOop array);
  private:
 #endif // GRAAL
-  StackGuardState        _stack_guard_state;
+
+  StackGuardState  _stack_guard_state;
+
+  // Precompute the limit of the stack as used in stack overflow checks.
+  // We load it from here to simplify the stack overflow check in assembly.
+  address          _stack_overflow_limit;
 
   nmethod*      _scanned_nmethod;  // nmethod being scanned by the sweeper
 
@@ -1057,20 +1062,31 @@
 
   // Last frame anchor routines
 
-  JavaFrameAnchor* frame_anchor(void)                { return &_anchor; }
+  JavaFrameAnchor* frame_anchor(void)            { return &_anchor; }
 
   // last_Java_sp
-  bool has_last_Java_frame() const                   { return _anchor.has_last_Java_frame(); }
-  intptr_t* last_Java_sp() const                     { return _anchor.last_Java_sp(); }
+  bool has_last_Java_frame() const               { return _anchor.has_last_Java_frame(); }
+  intptr_t* last_Java_sp() const                 { return _anchor.last_Java_sp(); }
 
   // last_Java_pc
 
-  address last_Java_pc(void)                         { return _anchor.last_Java_pc(); }
+  address last_Java_pc(void)                     { return _anchor.last_Java_pc(); }
 
   // Safepoint support
+#ifndef PPC64
   JavaThreadState thread_state() const           { return _thread_state; }
-  void set_thread_state(JavaThreadState s)       { _thread_state=s;      }
-  ThreadSafepointState *safepoint_state() const  { return _safepoint_state;  }
+  void set_thread_state(JavaThreadState s)       { _thread_state = s;    }
+#else
+  // Use membars when accessing volatile _thread_state. See
+  // Threads::create_vm() for size checks.
+  JavaThreadState thread_state() const           {
+    return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state);
+  }
+  void set_thread_state(JavaThreadState s)       {
+    OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s);
+  }
+#endif
+  ThreadSafepointState *safepoint_state() const  { return _safepoint_state; }
   void set_safepoint_state(ThreadSafepointState *state) { _safepoint_state = state; }
   bool is_at_poll_safepoint()                    { return _safepoint_state->is_at_poll_safepoint(); }
 
@@ -1259,7 +1275,7 @@
   void set_vframe_array_head(vframeArray* value) { _vframe_array_head = value; }
   vframeArray* vframe_array_head() const         { return _vframe_array_head;  }
 
-  // Side structure for defering update of java frame locals until deopt occurs
+  // Side structure for deferring update of java frame locals until deopt occurs
   GrowableArray<jvmtiDeferredLocalVariableSet*>* deferred_locals() const { return _deferred_locals_updates; }
   void set_deferred_locals(GrowableArray<jvmtiDeferredLocalVariableSet *>* vf) { _deferred_locals_updates = vf; }
 
@@ -1354,6 +1370,14 @@
   // and reguard if possible.
   bool reguard_stack(void);
 
+  address stack_overflow_limit() { return _stack_overflow_limit; }
+  void set_stack_overflow_limit() {
+    _stack_overflow_limit = _stack_base - _stack_size +
+                            ((StackShadowPages +
+                              StackYellowPages +
+                              StackRedPages) * os::vm_page_size());
+  }
+
   // Misc. accessors/mutators
   void set_do_not_unlock(void)                   { _do_not_unlock_if_synchronized = true; }
   void clr_do_not_unlock(void)                   { _do_not_unlock_if_synchronized = false; }
@@ -1393,6 +1417,7 @@
   static ByteSize exception_oop_offset()         { return byte_offset_of(JavaThread, _exception_oop       ); }
   static ByteSize exception_pc_offset()          { return byte_offset_of(JavaThread, _exception_pc        ); }
   static ByteSize exception_handler_pc_offset()  { return byte_offset_of(JavaThread, _exception_handler_pc); }
+  static ByteSize stack_overflow_limit_offset()  { return byte_offset_of(JavaThread, _stack_overflow_limit); }
   static ByteSize is_method_handle_return_offset() { return byte_offset_of(JavaThread, _is_method_handle_return); }
   static ByteSize stack_guard_state_offset()     { return byte_offset_of(JavaThread, _stack_guard_state   ); }
   static ByteSize suspend_flags_offset()         { return byte_offset_of(JavaThread, _suspend_flags       ); }
@@ -1464,7 +1489,7 @@
   void frames_do(void f(frame*, const RegisterMap*));
 
   // Memory operations
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
   // Sweeper operations
   void nmethods_do(CodeBlobClosure* cf);
@@ -1756,6 +1781,9 @@
 #ifdef TARGET_OS_ARCH_linux_ppc
 # include "thread_linux_ppc.hpp"
 #endif
+#ifdef TARGET_OS_ARCH_aix_ppc
+# include "thread_aix_ppc.hpp"
+#endif
 #ifdef TARGET_OS_ARCH_bsd_x86
 # include "thread_bsd_x86.hpp"
 #endif
@@ -1892,7 +1920,7 @@
   // GC support
   // Apply "f->do_oop" to all root oops in "this".
   // Apply "cf->do_code_blob" (if !NULL) to all code blobs active in frames
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
 #ifndef PRODUCT
 private:
@@ -1931,6 +1959,8 @@
   static bool        _vm_complete;
 #endif
 
+  static void initialize_java_lang_classes(JavaThread* main_thread, TRAPS);
+  static void initialize_jsr292_core_classes(TRAPS);
  public:
   // Thread management
   // force_daemon is a concession to JNI, where we may need to add a
@@ -1959,9 +1989,9 @@
 
   // Apply "f->do_oop" to all root oops in all threads.
   // This version may only be called by sequential code.
-  static void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  static void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
   // This version may be called by sequential or parallel code.
-  static void possibly_parallel_oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  static void possibly_parallel_oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
   // This creates a list of GCTasks, one per thread.
   static void create_thread_roots_tasks(GCTaskQueue* q);
   // This creates a list of GCTasks, one per thread, for marking objects.