--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/HotSpotAgent.java	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -33,6 +33,7 @@
 import sun.jvm.hotspot.debugger.JVMDebugger;
 import sun.jvm.hotspot.debugger.MachineDescription;
 import sun.jvm.hotspot.debugger.MachineDescriptionAMD64;
+import sun.jvm.hotspot.debugger.MachineDescriptionPPC64;
 import sun.jvm.hotspot.debugger.MachineDescriptionIA64;
 import sun.jvm.hotspot.debugger.MachineDescriptionIntelX86;
 import sun.jvm.hotspot.debugger.MachineDescriptionSPARC32Bit;
@@ -588,6 +589,8 @@
             machDesc = new MachineDescriptionIA64();
         } else if (cpu.equals("amd64")) {
             machDesc = new MachineDescriptionAMD64();
+        } else if (cpu.equals("ppc64")) {
+            machDesc = new MachineDescriptionPPC64();
         } else if (cpu.equals("sparc")) {
             if (LinuxDebuggerLocal.getAddressSize()==8) {
                     machDesc = new MachineDescriptionSPARC64Bit();

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/debugger/MachineDescriptionPPC64.java	Fri Jul 18 11:22:49 2014 -0400
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 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
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.debugger;
+
+public class MachineDescriptionPPC64 extends MachineDescriptionTwosComplement implements MachineDescription {
+  public long getAddressSize() {
+    return 8;
+  }
+
+  public boolean isLP64() {
+    return true;
+  }
+
+  public boolean isBigEndian() {
+    return true;
+  }
+}

--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/PlatformInfo.java	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -61,7 +61,7 @@
       return "x86";
     } else if (cpu.equals("sparc") || cpu.equals("sparcv9")) {
       return "sparc";
-    } else if (cpu.equals("ia64") || cpu.equals("amd64") || cpu.equals("x86_64")) {
+    } else if (cpu.equals("ia64") || cpu.equals("amd64") || cpu.equals("x86_64") || cpu.equals("ppc64")) {
       return cpu;
     } else {
       try {

--- a/hotspot/make/jprt.properties	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/make/jprt.properties	Fri Jul 18 11:22:49 2014 -0400
@@ -126,7 +126,7 @@
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jvm98, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jvm98_nontiered, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-scimark, \
-    ${jprt.my.solaris.sparcv9}-product-c2-runThese, \
+    ${jprt.my.solaris.sparcv9}-product-c2-runThese8, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_SerialGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
@@ -150,8 +150,9 @@
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jvm98, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jvm98_nontiered, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-scimark, \
-    ${jprt.my.solaris.x64}-product-c2-runThese, \
-    ${jprt.my.solaris.x64}-product-c2-runThese_Xcomp, \
+    ${jprt.my.solaris.x64}-product-c2-runThese8, \
+    ${jprt.my.solaris.x64}-product-c2-runThese8_Xcomp_lang, \
+    ${jprt.my.solaris.x64}-product-c2-runThese8_Xcomp_vm, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_SerialGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
@@ -175,9 +176,11 @@
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
     ${jprt.my.linux.i586}-{product|fastdebug}-c2-jvm98_nontiered, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-scimark, \
-    ${jprt.my.linux.i586}-product-c1-runThese_Xcomp, \
-    ${jprt.my.linux.i586}-fastdebug-c1-runThese_Xshare, \
-    ${jprt.my.linux.i586}-fastdebug-c2-runThese_Xcomp, \
+    ${jprt.my.linux.i586}-product-c1-runThese8_Xcomp_lang, \
+    ${jprt.my.linux.i586}-product-c1-runThese8_Xcomp_vm, \
+    ${jprt.my.linux.i586}-fastdebug-c1-runThese8_Xshare, \
+    ${jprt.my.linux.i586}-fastdebug-c2-runThese8_Xcomp_lang, \
+    ${jprt.my.linux.i586}-fastdebug-c2-runThese8_Xcomp_vm, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_SerialGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC, \
@@ -243,9 +246,10 @@
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
     ${jprt.my.windows.i586}-{product|fastdebug}-c2-jvm98_nontiered, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-scimark, \
-    ${jprt.my.windows.i586}-product-{c1|c2}-runThese, \
-    ${jprt.my.windows.i586}-product-{c1|c2}-runThese_Xcomp, \
-    ${jprt.my.windows.i586}-fastdebug-c1-runThese_Xshare, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-runThese8, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-runThese8_Xcomp_lang, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-runThese8_Xcomp_vm, \
+    ${jprt.my.windows.i586}-fastdebug-c1-runThese8_Xshare, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_SerialGC, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC, \
@@ -269,8 +273,9 @@
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-jvm98, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-jvm98_nontiered, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-scimark, \
-    ${jprt.my.windows.x64}-product-c2-runThese, \
-    ${jprt.my.windows.x64}-product-c2-runThese_Xcomp, \
+    ${jprt.my.windows.x64}-product-c2-runThese8, \
+    ${jprt.my.windows.x64}-product-c2-runThese8_Xcomp_lang, \
+    ${jprt.my.windows.x64}-product-c2-runThese8_Xcomp_vm, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_SerialGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \

--- a/hotspot/make/linux/makefiles/defs.make	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/make/linux/makefiles/defs.make	Fri Jul 18 11:22:49 2014 -0400
@@ -297,27 +297,23 @@
 endif
 
 # Serviceability Binaries
-# No SA Support for PPC, IA64, ARM or zero
-ADD_SA_BINARIES/x86   = $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.$(LIBRARY_SUFFIX) \
-                        $(EXPORT_LIB_DIR)/sa-jdi.jar
-ADD_SA_BINARIES/sparc = $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.$(LIBRARY_SUFFIX) \
-                        $(EXPORT_LIB_DIR)/sa-jdi.jar
+
+ADD_SA_BINARIES/DEFAULT = $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.$(LIBRARY_SUFFIX) \
+                          $(EXPORT_LIB_DIR)/sa-jdi.jar
+
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifeq ($(ZIP_DEBUGINFO_FILES),1)
-    ADD_SA_BINARIES/x86   += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.diz
-    ADD_SA_BINARIES/sparc += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.diz
+    ADD_SA_BINARIES/DEFAULT += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.diz
   else
-    ADD_SA_BINARIES/x86   += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.debuginfo
-    ADD_SA_BINARIES/sparc += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.debuginfo
+    ADD_SA_BINARIES/DEFAULT += $(EXPORT_JRE_LIB_ARCH_DIR)/libsaproc.debuginfo
   endif
 endif
-ADD_SA_BINARIES/ppc   =
-ADD_SA_BINARIES/ia64  =
-ADD_SA_BINARIES/arm   =
+
+ADD_SA_BINARIES/$(HS_ARCH) = $(ADD_SA_BINARIES/DEFAULT)
+
+# No SA Support for zero
 ADD_SA_BINARIES/zero  =
 
 -include $(HS_ALT_MAKE)/linux/makefiles/defs.make
 
 EXPORT_LIST += $(ADD_SA_BINARIES/$(HS_ARCH))
-
-

--- a/hotspot/src/cpu/ppc/vm/frame_ppc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/ppc/vm/frame_ppc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -154,15 +154,6 @@
   }
 }
 
-void frame::pd_gc_epilog() {
-  if (is_interpreted_frame()) {
-    // Set constant pool cache entry for interpreter.
-    Method* m = interpreter_frame_method();
-
-    *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
-  }
-}
-
 bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
   // Is there anything to do?
   assert(is_interpreted_frame(), "Not an interpreted frame");

--- a/hotspot/src/cpu/ppc/vm/frame_ppc.inline.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/ppc/vm/frame_ppc.inline.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -135,12 +135,12 @@
   return (intptr_t**)&istate->_locals;
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   interpreterState istate = get_interpreterState();
   return (intptr_t*)&istate->_bcp;
 }
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   interpreterState istate = get_interpreterState();
   return (intptr_t*)&istate->_mdx;
 }
@@ -210,10 +210,10 @@
 inline intptr_t** frame::interpreter_frame_locals_addr() const {
   return (intptr_t**) &(get_ijava_state()->locals);
 }
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   return (intptr_t*) &(get_ijava_state()->bcp);
 }
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   return (intptr_t*) &(get_ijava_state()->mdx);
 }
 // Pointer beyond the "oldest/deepest" BasicObjectLock on stack.

--- a/hotspot/src/cpu/ppc/vm/icache_ppc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/ppc/vm/icache_ppc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -68,7 +68,6 @@
 }
 
 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) {
-  StubCodeMark mark(this, "ICache", "flush_icache_stub");
 
   *flush_icache_stub = (ICache::flush_icache_stub_t)ICache::ppc64_flush_icache;
 

--- a/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/ppc/vm/stubGenerator_ppc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -524,8 +524,6 @@
     int frame_size_in_bytes = frame::abi_reg_args_size;
     OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0);
 
-    StubCodeMark mark(this, "StubRoutines", "throw_exception");
-
     address start = __ pc();
 
     __ save_LR_CR(R11_scratch1);
@@ -846,8 +844,6 @@
   //
   // Don't generate, rather use C++ code.
   address generate_verify_oop() {
-    StubCodeMark mark(this, "StubRoutines", "verify_oop");
-
     // this is actually a `FunctionDescriptor*'.
     address start = 0;
 

--- a/hotspot/src/cpu/sparc/vm/frame_sparc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/frame_sparc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -594,17 +594,6 @@
   return this->fp() == fp;
 }
 
-
-void frame::pd_gc_epilog() {
-  if (is_interpreted_frame()) {
-    // set constant pool cache entry for interpreter
-    Method* m = interpreter_frame_method();
-
-    *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
-  }
-}
-
-
 bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
 #ifdef CC_INTERP
   // Is there anything to do?
@@ -642,10 +631,10 @@
     return false;
   }
 
-  // validate bci/bcx
+  // validate bci/bcp
 
-  intptr_t  bcx    = interpreter_frame_bcx();
-  if (m->validate_bci_from_bcx(bcx) < 0) {
+  address bcp = interpreter_frame_bcp();
+  if (m->validate_bci_from_bcp(bcp) < 0) {
     return false;
   }
 

--- a/hotspot/src/cpu/sparc/vm/frame_sparc.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/frame_sparc.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, 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
@@ -78,7 +78,6 @@
 //    Lesp         first free element of expression stack
 //                 (which grows towards __higher__ addresses)
 //    Lbcp         is set to address of bytecode to execute
-//                 It is accessed in the frame under the name "bcx".
 //                 It may at times (during GC) be an index instead.
 //    Lmethod      the method being interpreted
 //    Llocals      the base pointer for accessing the locals array

--- a/hotspot/src/cpu/sparc/vm/frame_sparc.inline.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/frame_sparc.inline.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -99,12 +99,12 @@
   return (intptr_t**) &istate->_locals;
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   interpreterState istate = get_interpreterState();
   return (intptr_t*) &istate->_bcp;
 }
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   interpreterState istate = get_interpreterState();
   return (intptr_t*) &istate->_mdx;
 }
@@ -166,12 +166,11 @@
   return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window());
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
-  // %%%%% reinterpreting Lbcp as a bcx
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window());
 }
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   // %%%%% reinterpreting ImethodDataPtr as a mdx
   return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window());
 }

--- a/hotspot/src/cpu/sparc/vm/macroAssembler_sparc.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/macroAssembler_sparc.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -186,8 +186,7 @@
 //       the interpreter to work right
 // (These assignments must be compatible with L7_thread_cache; see above.)
 
-// Since Lbcp points into the middle of the method object,
-// it is temporarily converted into a "bcx" during GC.
+// Lbcp points into the middle of the method object.
 
 // Exception processing
 // These registers are passed into exception handlers.

--- a/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1786,7 +1786,7 @@
   __ verify_thread();
   // expression stack is undefined here
   // O0: exception, i.e. Oexception
-  // Lbcp: exception bcx
+  // Lbcp: exception bcp
   __ verify_oop(Oexception);
 
 

--- a/hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -251,6 +251,49 @@
   // buf is started with ", " or is empty
   _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf);
 
+  // There are three 64-bit SPARC families that do not overlap, e.g.,
+  // both is_ultra3() and is_sparc64() cannot be true at the same time.
+  // Within these families, there can be more than one chip, e.g.,
+  // is_T4() and is_T7() machines are also is_niagara().
+  if (is_ultra3()) {
+    assert(_L1_data_cache_line_size == 0, "overlap with Ultra3 family");
+    // Ref: UltraSPARC III Cu Processor
+    _L1_data_cache_line_size = 64;
+  }
+  if (is_niagara()) {
+    assert(_L1_data_cache_line_size == 0, "overlap with niagara family");
+    // All Niagara's are sun4v's, but not all sun4v's are Niagaras, e.g.,
+    // Fujitsu SPARC64 is sun4v, but we don't want it in this block.
+    //
+    // Ref: UltraSPARC T1 Supplement to the UltraSPARC Architecture 2005
+    // Appendix F.1.3.1 Cacheable Accesses
+    // -> 16-byte L1 cache line size
+    //
+    // Ref: UltraSPARC T2: A Highly-Threaded, Power-Efficient, SPARC SOC
+    // Section III: SPARC Processor Core
+    // -> 16-byte L1 cache line size
+    //
+    // Ref: Oracle's SPARC T4-1, SPARC T4-2, SPARC T4-4, and SPARC T4-1B Server Architecture
+    // Section SPARC T4 Processor Cache Architecture
+    // -> 32-byte L1 cache line size (no longer see that info on this ref)
+    //
+    // XXX - still need a T7 reference here
+    //
+    if (is_T7()) {  // T7 or newer
+      _L1_data_cache_line_size = 64;
+    } else if (is_T4()) {  // T4 or newer (until T7)
+      _L1_data_cache_line_size = 32;
+    } else {  // T1 or newer (until T4)
+      _L1_data_cache_line_size = 16;
+    }
+  }
+  if (is_sparc64()) {
+    guarantee(_L1_data_cache_line_size == 0, "overlap with SPARC64 family");
+    // Ref: Fujitsu SPARC64 VII Processor
+    // Section 4 Cache System
+    _L1_data_cache_line_size = 64;
+  }
+
   // UseVIS is set to the smallest of what hardware supports and what
   // the command line requires.  I.e., you cannot set UseVIS to 3 on
   // older UltraSparc which do not support it.
@@ -356,6 +399,7 @@
 
 #ifndef PRODUCT
   if (PrintMiscellaneous && Verbose) {
+    tty->print_cr("L1 data cache line size: %u", L1_data_cache_line_size());
     tty->print("Allocation");
     if (AllocatePrefetchStyle <= 0) {
       tty->print_cr(": no prefetching");

--- a/hotspot/src/cpu/x86/vm/frame_x86.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/frame_x86.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -537,10 +537,6 @@
   return _fp == (fp - diff);
 }
 
-void frame::pd_gc_epilog() {
-  // nothing done here now
-}
-
 bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
 // QQQ
 #ifdef CC_INTERP
@@ -577,10 +573,10 @@
     return false;
   }
 
-  // validate bci/bcx
+  // validate bci/bcp
 
-  intptr_t  bcx    = interpreter_frame_bcx();
-  if (m->validate_bci_from_bcx(bcx) < 0) {
+  address bcp = interpreter_frame_bcp();
+  if (m->validate_bci_from_bcp(bcp) < 0) {
     return false;
   }
 
@@ -692,10 +688,10 @@
     DESCRIBE_FP_OFFSET(interpreter_frame_sender_sp);
     DESCRIBE_FP_OFFSET(interpreter_frame_last_sp);
     DESCRIBE_FP_OFFSET(interpreter_frame_method);
-    DESCRIBE_FP_OFFSET(interpreter_frame_mdx);
+    DESCRIBE_FP_OFFSET(interpreter_frame_mdp);
     DESCRIBE_FP_OFFSET(interpreter_frame_cache);
     DESCRIBE_FP_OFFSET(interpreter_frame_locals);
-    DESCRIBE_FP_OFFSET(interpreter_frame_bcx);
+    DESCRIBE_FP_OFFSET(interpreter_frame_bcp);
     DESCRIBE_FP_OFFSET(interpreter_frame_initial_sp);
 #endif
   }

--- a/hotspot/src/cpu/x86/vm/frame_x86.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/frame_x86.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -40,7 +40,7 @@
 //     ...                        | monitor block size
 //    [monitors              ]   /
 //    [monitor block size    ]
-//    [byte code index/pointr]                   = bcx()                bcx_offset
+//    [byte code pointer     ]                   = bcp()                bcp_offset
 //    [pointer to locals     ]                   = locals()             locals_offset
 //    [constant pool cache   ]                   = cache()              cache_offset
 //    [methodData            ]                   = mdp()                mdx_offset
@@ -111,11 +111,11 @@
     // outgoing sp before a call to an invoked method
     interpreter_frame_last_sp_offset                 = interpreter_frame_sender_sp_offset - 1,
     interpreter_frame_method_offset                  = interpreter_frame_last_sp_offset - 1,
-    interpreter_frame_mdx_offset                     = interpreter_frame_method_offset - 1,
-    interpreter_frame_cache_offset                   = interpreter_frame_mdx_offset - 1,
+    interpreter_frame_mdp_offset                     = interpreter_frame_method_offset - 1,
+    interpreter_frame_cache_offset                   = interpreter_frame_mdp_offset - 1,
     interpreter_frame_locals_offset                  = interpreter_frame_cache_offset - 1,
-    interpreter_frame_bcx_offset                     = interpreter_frame_locals_offset - 1,
-    interpreter_frame_initial_sp_offset              = interpreter_frame_bcx_offset - 1,
+    interpreter_frame_bcp_offset                     = interpreter_frame_locals_offset - 1,
+    interpreter_frame_initial_sp_offset              = interpreter_frame_bcp_offset - 1,
 
     interpreter_frame_monitor_block_top_offset       = interpreter_frame_initial_sp_offset,
     interpreter_frame_monitor_block_bottom_offset    = interpreter_frame_initial_sp_offset,

--- a/hotspot/src/cpu/x86/vm/frame_x86.inline.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/frame_x86.inline.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -169,7 +169,7 @@
   return &(get_interpreterState()->_locals);
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return (intptr_t*) &(get_interpreterState()->_bcp);
 }
@@ -189,7 +189,7 @@
   return &(get_interpreterState()->_method);
 }
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return (intptr_t*) &(get_interpreterState()->_mdx);
 }
@@ -211,13 +211,13 @@
   return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
-  return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
+  return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
 }
 
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
-  return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
+  return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
 }
 
 

--- a/hotspot/src/cpu/x86/vm/interp_masm_x86.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -134,7 +134,7 @@
         shll(tmp, exact_log2(DataLayout::cell_size));
         addptr(mdp, tmp);
       }
-      movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp);
+      movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp);
     } else {
       assert(MethodData::profile_return(), "either profile call args or call ret");
       update_mdp_by_constant(mdp, in_bytes(TypeEntriesAtCall::return_only_size()));

--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -826,7 +826,7 @@
 // Test ImethodDataPtr.  If it is null, continue at the specified label
 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
   assert(ProfileInterpreter, "must be profiling interpreter");
-  movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
+  movptr(mdp, Address(rbp, frame::interpreter_frame_mdp_offset * wordSize));
   testptr(mdp, mdp);
   jcc(Assembler::zero, zero_continue);
 }
@@ -853,7 +853,7 @@
   addptr(rbx, in_bytes(MethodData::data_offset()));
   addptr(rax, rbx);
   bind(set_mdp);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), rax);
   pop(rbx);
   pop(rax);
 }
@@ -975,7 +975,7 @@
   assert(ProfileInterpreter, "must be profiling interpreter");
   Address disp_address(mdp_in, offset_of_disp);
   addptr(mdp_in,disp_address);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 
@@ -983,14 +983,14 @@
   assert(ProfileInterpreter, "must be profiling interpreter");
   Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
   addptr(mdp_in, disp_address);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 
 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
   assert(ProfileInterpreter, "must be profiling interpreter");
   addptr(mdp_in, constant);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 

--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_32.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_32.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -61,8 +61,8 @@
 
 #else
 
-  void save_bcp()                                          { movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), rsi); }
-  void restore_bcp()                                       { movptr(rsi, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize)); }
+  void save_bcp()                                          { movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), rsi); }
+  void restore_bcp()                                       { movptr(rsi, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize)); }
   void restore_locals()                                    { movptr(rdi, Address(rbp, frame::interpreter_frame_locals_offset * wordSize)); }
 
   // Helpers for runtime call arguments/results

--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -841,7 +841,7 @@
 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp,
                                                          Label& zero_continue) {
   assert(ProfileInterpreter, "must be profiling interpreter");
-  movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
+  movptr(mdp, Address(rbp, frame::interpreter_frame_mdp_offset * wordSize));
   testptr(mdp, mdp);
   jcc(Assembler::zero, zero_continue);
 }
@@ -868,7 +868,7 @@
   addptr(rbx, in_bytes(MethodData::data_offset()));
   addptr(rax, rbx);
   bind(set_mdp);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), rax);
   pop(rbx);
   pop(rax);
 }
@@ -991,7 +991,7 @@
   assert(ProfileInterpreter, "must be profiling interpreter");
   Address disp_address(mdp_in, offset_of_disp);
   addptr(mdp_in, disp_address);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 
@@ -1001,7 +1001,7 @@
   assert(ProfileInterpreter, "must be profiling interpreter");
   Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
   addptr(mdp_in, disp_address);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 
@@ -1009,7 +1009,7 @@
                                                        int constant) {
   assert(ProfileInterpreter, "must be profiling interpreter");
   addptr(mdp_in, constant);
-  movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
+  movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in);
 }
 
 

--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_64.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_64.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -58,11 +58,11 @@
 
   // Interpreter-specific registers
   void save_bcp() {
-    movptr(Address(rbp, frame::interpreter_frame_bcx_offset * wordSize), r13);
+    movptr(Address(rbp, frame::interpreter_frame_bcp_offset * wordSize), r13);
   }
 
   void restore_bcp() {
-    movptr(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize));
+    movptr(r13, Address(rbp, frame::interpreter_frame_bcp_offset * wordSize));
   }
 
   void restore_locals() {

--- a/hotspot/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 201,4 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
@@ -52,7 +52,7 @@
 
 #ifndef CC_INTERP
 const int method_offset = frame::interpreter_frame_method_offset * wordSize;
-const int bci_offset    = frame::interpreter_frame_bcx_offset    * wordSize;
+const int bcp_offset    = frame::interpreter_frame_bcp_offset    * wordSize;
 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize;
 
 //------------------------------------------------------------------------------------------------------------------------

--- a/hotspot/src/cpu/x86/vm/templateInterpreter_x86_64.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/templateInterpreter_x86_64.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -52,7 +52,7 @@
 #ifndef CC_INTERP
 
 const int method_offset = frame::interpreter_frame_method_offset * wordSize;
-const int bci_offset    = frame::interpreter_frame_bcx_offset    * wordSize;
+const int bcp_offset    = frame::interpreter_frame_bcp_offset    * wordSize;
 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize;
 
 //-----------------------------------------------------------------------------

--- a/hotspot/src/cpu/x86/vm/vm_version_x86.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/vm_version_x86.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -394,6 +394,8 @@
   _stepping = 0;
   _cpuFeatures = 0;
   _logical_processors_per_package = 1;
+  // i486 internal cache is both I&D and has a 16-byte line size
+  _L1_data_cache_line_size = 16;
 
   if (!Use486InstrsOnly) {
     // Get raw processor info
@@ -412,6 +414,7 @@
       // Logical processors are only available on P4s and above,
       // and only if hyperthreading is available.
       _logical_processors_per_package = logical_processor_count();
+      _L1_data_cache_line_size = L1_line_size();
     }
   }
 
@@ -924,6 +927,7 @@
   if (PrintMiscellaneous && Verbose) {
     tty->print_cr("Logical CPUs per core: %u",
                   logical_processors_per_package());
+    tty->print_cr("L1 data cache line size: %u", L1_data_cache_line_size());
     tty->print("UseSSE=%d", (int) UseSSE);
     if (UseAVX > 0) {
       tty->print("  UseAVX=%d", (int) UseAVX);

--- a/hotspot/src/cpu/x86/vm/vm_version_x86.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/x86/vm/vm_version_x86.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -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
@@ -581,7 +581,7 @@
     return result;
   }
 
-  static intx prefetch_data_size()  {
+  static intx L1_line_size()  {
     intx result = 0;
     if (is_intel()) {
       result = (_cpuid_info.dcp_cpuid4_ebx.bits.L1_line_size + 1);
@@ -593,6 +593,10 @@
     return result;
   }
 
+  static intx prefetch_data_size()  {
+    return L1_line_size();
+  }
+
   //
   // Feature identification
   //

--- a/hotspot/src/cpu/zero/vm/frame_zero.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/zero/vm/frame_zero.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -119,9 +119,6 @@
   return false;
 }
 
-void frame::pd_gc_epilog() {
-}
-
 bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
   ShouldNotCallThis();
   return false;

--- a/hotspot/src/cpu/zero/vm/frame_zero.inline.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/cpu/zero/vm/frame_zero.inline.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -101,7 +101,7 @@
   return &(get_interpreterState()->_locals);
 }
 
-inline intptr_t* frame::interpreter_frame_bcx_addr() const {
+inline intptr_t* frame::interpreter_frame_bcp_addr() const {
   return (intptr_t*) &(get_interpreterState()->_bcp);
 }
 
@@ -113,7 +113,7 @@
   return &(get_interpreterState()->_method);
 }
 
-inline intptr_t* frame::interpreter_frame_mdx_addr() const {
+inline intptr_t* frame::interpreter_frame_mdp_addr() const {
   return (intptr_t*) &(get_interpreterState()->_mdx);
 }
 

--- a/hotspot/src/os/bsd/dtrace/generateJvmOffsets.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/os/bsd/dtrace/generateJvmOffsets.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -202,11 +202,11 @@
   GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
   // Fake value for consistency. It is not going to be used.
-  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, 0xFFFF);
+  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, 0xFFFF);
 #elif defined(i386) || defined(__i386) || defined(__amd64)
   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
   GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
-  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, -7 * pointer_size);
+  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, -7 * pointer_size);
 #endif
 
   GEN_OFFS(Klass, _name);

--- a/hotspot/src/os/bsd/dtrace/libjvm_db.c	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/os/bsd/dtrace/libjvm_db.c	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -164,7 +164,7 @@
   int32_t  SIZE_CodeCache_log2_segment;
 
   uint64_t methodPtr;
-  uint64_t bcx;
+  uint64_t bcp;
 
   Nmethod_t *N;                 /*Inlined methods support */
   Frame_t   prev_fr;
@@ -1068,19 +1068,9 @@
   return err;
 }
 
-int is_bci(intptr_t bcx) {
-  switch (DATA_MODEL) {
-  case PR_MODEL_LP64:
-    return ((uintptr_t) bcx) <= ((uintptr_t) MAX_METHOD_CODE_SIZE) ;
-  case PR_MODEL_ILP32:
-  default:
-    return 0 <= bcx && bcx <= MAX_METHOD_CODE_SIZE;
-  }
-}
-
 static int
 name_for_imethod(jvm_agent_t* J,
-                 uint64_t bcx,
+                 uint64_t bcp,
                  uint64_t method,
                  char *result,
                  size_t size,
@@ -1095,7 +1085,7 @@
   err = read_pointer(J, method + OFFSET_Method_constMethod, &constMethod);
   CHECK_FAIL(err);
 
-  bci = is_bci(bcx) ? bcx : bcx - (constMethod + (uint64_t) SIZE_ConstMethod);
+  bci = bcp - (constMethod + (uint64_t) SIZE_ConstMethod);
 
   if (debug)
       fprintf(stderr, "\t name_for_imethod: BEGIN: method: %#llx\n", method);
@@ -1169,7 +1159,7 @@
     if (err == PS_OK && strncmp(name, "Interpreter", 11) == 0) {
       *is_interpreted = 1;
       if (is_method(J, J->methodPtr)) {
-        return name_for_imethod(J, J->bcx, J->methodPtr, result, size, jframe);
+        return name_for_imethod(J, J->bcp, J->methodPtr, result, size, jframe);
       }
     }
 
@@ -1326,7 +1316,7 @@
   /* arguments given to read_pointer need to be worst case sized */
   uint64_t methodPtr = 0;
   uint64_t sender_sp;
-  uint64_t bcx = 0;
+  uint64_t bcp = 0;
   int is_interpreted = 0;
   int result = PS_OK;
   int err = PS_OK;
@@ -1357,7 +1347,7 @@
      * regs[R_PC] contains a CALL instruction pc offset.
      */
     pc += 8;
-    bcx          = (uintptr_t) regs[R_L1];
+    bcp          = (uintptr_t) regs[R_L1];
     methodPtr = (uintptr_t) regs[R_L2];
     sender_sp = regs[R_I5];
     if (debug > 2) {
@@ -1385,13 +1375,13 @@
     if (read_pointer(J,  fp + OFFSET_interpreter_frame_sender_sp, &sender_sp) != PS_OK) {
       sender_sp = 0;
     }
-    if (read_pointer(J,  fp + OFFSET_interpreter_frame_bcx_offset, &bcx) != PS_OK) {
-      bcx = 0;
+    if (read_pointer(J,  fp + OFFSET_interpreter_frame_bcp_offset, &bcp) != PS_OK) {
+      bcp = 0;
     }
 #endif /* i386 */
 
   J->methodPtr = methodPtr;
-  J->bcx = bcx;
+  J->bcp = bcp;
 
   /* On x86 with C2 JVM: native frame may have wrong regs[R_FP]
    * For example: JVM_SuspendThread frame poins to the top interpreted frame.
@@ -1402,7 +1392,7 @@
    */
 #ifndef X86_COMPILER2
   if (is_method(J, J->methodPtr)) {
-    result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe);
+    result = name_for_imethod(J, bcp, J->methodPtr, name, size, jframe);
     /* If the methodPtr is a method then this is highly likely to be
        an interpreter frame */
     if (result >= 0) {
@@ -1416,7 +1406,7 @@
   }
 #ifdef X86_COMPILER2
   else if (is_method(J, J->methodPtr)) {
-    result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe);
+    result = name_for_imethod(J, bcp, J->methodPtr, name, size, jframe);
     /* If the methodPtr is a method then this is highly likely to be
        an interpreter frame */
     if (result >= 0) {

--- a/hotspot/src/os/solaris/dtrace/generateJvmOffsets.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/os/solaris/dtrace/generateJvmOffsets.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -197,11 +197,11 @@
   GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
   // Fake value for consistency. It is not going to be used.
-  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, 0xFFFF);
+  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, 0xFFFF);
 #elif defined(i386) || defined(__i386) || defined(__amd64)
   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
   GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
-  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, -7 * pointer_size);
+  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, -7 * pointer_size);
 #endif
 
   GEN_OFFS(Klass, _name);

--- a/hotspot/src/os/solaris/dtrace/libjvm_db.c	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/os/solaris/dtrace/libjvm_db.c	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -164,7 +164,7 @@
   int32_t  SIZE_CodeCache_log2_segment;
 
   uint64_t methodPtr;
-  uint64_t bcx;
+  uint64_t bcp;
 
   Nmethod_t *N;                 /*Inlined methods support */
   Frame_t   prev_fr;
@@ -1068,19 +1068,9 @@
   return err;
 }
 
-int is_bci(intptr_t bcx) {
-  switch (DATA_MODEL) {
-  case PR_MODEL_LP64:
-    return ((uintptr_t) bcx) <= ((uintptr_t) MAX_METHOD_CODE_SIZE) ;
-  case PR_MODEL_ILP32:
-  default:
-    return 0 <= bcx && bcx <= MAX_METHOD_CODE_SIZE;
-  }
-}
-
 static int
 name_for_imethod(jvm_agent_t* J,
-                 uint64_t bcx,
+                 uint64_t bcp,
                  uint64_t method,
                  char *result,
                  size_t size,
@@ -1095,7 +1085,7 @@
   err = read_pointer(J, method + OFFSET_Method_constMethod, &constMethod);
   CHECK_FAIL(err);
 
-  bci = is_bci(bcx) ? bcx : bcx - (constMethod + (uint64_t) SIZE_ConstMethod);
+  bci = bcp - (constMethod + (uint64_t) SIZE_ConstMethod);
 
   if (debug)
       fprintf(stderr, "\t name_for_imethod: BEGIN: method: %#llx\n", method);
@@ -1169,7 +1159,7 @@
     if (err == PS_OK && strncmp(name, "Interpreter", 11) == 0) {
       *is_interpreted = 1;
       if (is_method(J, J->methodPtr)) {
-        return name_for_imethod(J, J->bcx, J->methodPtr, result, size, jframe);
+        return name_for_imethod(J, J->bcp, J->methodPtr, result, size, jframe);
       }
     }
 
@@ -1326,7 +1316,7 @@
   /* arguments given to read_pointer need to be worst case sized */
   uint64_t methodPtr = 0;
   uint64_t sender_sp;
-  uint64_t bcx = 0;
+  uint64_t bcp = 0;
   int is_interpreted = 0;
   int result = PS_OK;
   int err = PS_OK;
@@ -1357,7 +1347,7 @@
      * regs[R_PC] contains a CALL instruction pc offset.
      */
     pc += 8;
-    bcx          = (uintptr_t) regs[R_L1];
+    bcp          = (uintptr_t) regs[R_L1];
     methodPtr = (uintptr_t) regs[R_L2];
     sender_sp = regs[R_I5];
     if (debug > 2) {
@@ -1385,13 +1375,13 @@
     if (read_pointer(J,  fp + OFFSET_interpreter_frame_sender_sp, &sender_sp) != PS_OK) {
       sender_sp = 0;
     }
-    if (read_pointer(J,  fp + OFFSET_interpreter_frame_bcx_offset, &bcx) != PS_OK) {
-      bcx = 0;
+    if (read_pointer(J,  fp + OFFSET_interpreter_frame_bcp_offset, &bcp) != PS_OK) {
+      bcp = 0;
     }
 #endif /* i386 */
 
   J->methodPtr = methodPtr;
-  J->bcx = bcx;
+  J->bcp = bcp;
 
   /* On x86 with C2 JVM: native frame may have wrong regs[R_FP]
    * For example: JVM_SuspendThread frame poins to the top interpreted frame.
@@ -1402,7 +1392,7 @@
    */
 #ifndef X86_COMPILER2
   if (is_method(J, J->methodPtr)) {
-    result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe);
+    result = name_for_imethod(J, bcp, J->methodPtr, name, size, jframe);
     /* If the methodPtr is a method then this is highly likely to be
        an interpreter frame */
     if (result >= 0) {
@@ -1416,7 +1406,7 @@
   }
 #ifdef X86_COMPILER2
   else if (is_method(J, J->methodPtr)) {
-    result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe);
+    result = name_for_imethod(J, bcp, J->methodPtr, name, size, jframe);
     /* If the methodPtr is a method then this is highly likely to be
        an interpreter frame */
     if (result >= 0) {

--- a/hotspot/src/share/vm/classfile/javaClasses.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/classfile/javaClasses.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1639,9 +1639,9 @@
       if (fr.is_first_frame()) break;
       address pc = fr.pc();
       if (fr.is_interpreted_frame()) {
-        intptr_t bcx = fr.interpreter_frame_bcx();
+        address bcp = fr.interpreter_frame_bcp();
         method = fr.interpreter_frame_method();
-        bci =  fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
+        bci =  method->bci_from(bcp);
         fr = fr.sender(&map);
       } else {
         CodeBlob* cb = fr.cb();

--- a/hotspot/src/share/vm/classfile/verifier.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/classfile/verifier.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -425,7 +425,7 @@
   if (_bci != -1 && method != NULL) {
     streamIndentor si(ss);
     const char* bytecode_name = "<invalid>";
-    if (method->validate_bci_from_bcx(_bci) != -1) {
+    if (method->validate_bci(_bci) != -1) {
       Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci));
       if (Bytecodes::is_defined(code)) {
           bytecode_name = Bytecodes::name(code);

--- a/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -76,7 +76,6 @@
   // When collecting the permanent generation Method*s may be moving,
   // so we either have to flush all bcp data or convert it into bci.
   CodeCache::gc_prologue();
-  Threads::gc_prologue();
 
   bool marked_for_unloading = false;
 
@@ -106,7 +105,6 @@
   //  Universe::set_heap_capacity_at_last_gc(Universe::heap()->capacity());
   //  Universe::set_heap_used_at_last_gc(Universe::heap()->used());
 
-  Threads::gc_epilogue();
   CodeCache::gc_epilogue();
   JvmtiExport::gc_epilogue();
 

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -180,7 +180,6 @@
     size_policy->major_collection_begin();
 
     CodeCache::gc_prologue();
-    Threads::gc_prologue();
     BiasedLocking::preserve_marks();
 
     // Capture heap size before collection for printing.
@@ -251,7 +250,6 @@
     MetaspaceAux::verify_metrics();
 
     BiasedLocking::restore_marks();
-    Threads::gc_epilogue();
     CodeCache::gc_epilogue();
     JvmtiExport::gc_epilogue();
 

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1066,7 +1066,6 @@
   ClassLoaderDataGraph::purge();
   MetaspaceAux::verify_metrics();
 
-  Threads::gc_epilogue();
   CodeCache::gc_epilogue();
   JvmtiExport::gc_epilogue();
 
@@ -2068,7 +2067,6 @@
     size_policy->major_collection_begin();
 
     CodeCache::gc_prologue();
-    Threads::gc_prologue();
 
     COMPILER2_PRESENT(DerivedPointerTable::clear());
 

--- a/hotspot/src/share/vm/memory/genMarkSweep.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/memory/genMarkSweep.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -76,7 +76,6 @@
   // When collecting the permanent generation Method*s may be moving,
   // so we either have to flush all bcp data or convert it into bci.
   CodeCache::gc_prologue();
-  Threads::gc_prologue();
 
   // Increment the invocation count
   _total_invocations++;
@@ -132,7 +131,6 @@
     rs->invalidate_or_clear(old_gen);
   }
 
-  Threads::gc_epilogue();
   CodeCache::gc_epilogue();
   JvmtiExport::gc_epilogue();
 

--- a/hotspot/src/share/vm/oops/method.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/oops/method.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -240,6 +240,9 @@
 
 
 int Method::bci_from(address bcp) const {
+  if (is_native() && bcp == 0) {
+    return 0;
+  }
 #ifdef ASSERT
   { ResourceMark rm;
   assert(is_native() && bcp == code_base() || contains(bcp) || is_error_reported(),
@@ -250,24 +253,23 @@
 }
 
 
-// Return (int)bcx if it appears to be a valid BCI.
-// Return bci_from((address)bcx) if it appears to be a valid BCP.
+int Method::validate_bci(int bci) const {
+  return (bci == 0 || bci < code_size()) ? bci : -1;
+}
+
+// Return bci if it appears to be a valid bcp
 // Return -1 otherwise.
 // Used by profiling code, when invalid data is a possibility.
 // The caller is responsible for validating the Method* itself.
-int Method::validate_bci_from_bcx(intptr_t bcx) const {
+int Method::validate_bci_from_bcp(address bcp) const {
   // keep bci as -1 if not a valid bci
   int bci = -1;
-  if (bcx == 0 || (address)bcx == code_base()) {
+  if (bcp == 0 || bcp == code_base()) {
     // code_size() may return 0 and we allow 0 here
     // the method may be native
     bci = 0;
-  } else if (frame::is_bci(bcx)) {
-    if (bcx < code_size()) {
-      bci = (int)bcx;
-    }
-  } else if (contains((address)bcx)) {
-    bci = (address)bcx - code_base();
+  } else if (contains(bcp)) {
+    bci = bcp - code_base();
   }
   // Assert that if we have dodged any asserts, bci is negative.
   assert(bci == -1 || bci == bci_from(bcp_from(bci)), "sane bci if >=0");

--- a/hotspot/src/share/vm/oops/method.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/oops/method.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -649,7 +649,8 @@
   // Returns the byte code index from the byte code pointer
   int     bci_from(address bcp) const;
   address bcp_from(int     bci) const;
-  int validate_bci_from_bcx(intptr_t bcx) const;
+  int validate_bci_from_bcp(address bcp) const;
+  int validate_bci(int bci) const;
 
   // Returns the line number for a bci if debugging information for the method is prowided,
   // -1 is returned otherwise.

--- a/hotspot/src/share/vm/oops/methodData.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/oops/methodData.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -2338,10 +2338,6 @@
     return dp - ((address)_data);
   }
 
-  address di_to_dp(int di) {
-    return (address)data_layout_at(di);
-  }
-
   // bci to di/dp conversion.
   address bci_to_dp(int bci);
   int bci_to_di(int bci) {

--- a/hotspot/src/share/vm/prims/forte.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/prims/forte.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -234,9 +234,8 @@
     *method_p = method;
     if (!method->is_valid_method()) return false;
 
-    intptr_t bcx = fr->interpreter_frame_bcx();
-
-    int      bci = method->validate_bci_from_bcx(bcx);
+    address bcp = fr->interpreter_frame_bcp();
+    int bci = method->validate_bci_from_bcp(bcp);
 
     // note: bci is set to -1 if not a valid bci
     *bci_p = bci;

--- a/hotspot/src/share/vm/prims/jni.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/prims/jni.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -3886,6 +3886,7 @@
     run_unit_test(TestKlass_test());
     run_unit_test(TestBitMap_test());
     run_unit_test(TestAsUtf8());
+    run_unit_test(ObjectMonitor::sanity_checks());
 #if INCLUDE_VM_STRUCTS
     run_unit_test(VMStructs::test());
 #endif

--- a/hotspot/src/share/vm/runtime/frame.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/frame.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -399,91 +399,32 @@
   *interpreter_frame_method_addr() = method;
 }
 
-void frame::interpreter_frame_set_bcx(intptr_t bcx) {
-  assert(is_interpreted_frame(), "Not an interpreted frame");
-  if (ProfileInterpreter) {
-    bool formerly_bci = is_bci(interpreter_frame_bcx());
-    bool is_now_bci = is_bci(bcx);
-    *interpreter_frame_bcx_addr() = bcx;
-
-    intptr_t mdx = interpreter_frame_mdx();
-
-    if (mdx != 0) {
-      if (formerly_bci) {
-        if (!is_now_bci) {
-          // The bcx was just converted from bci to bcp.
-          // Convert the mdx in parallel.
-          MethodData* mdo = interpreter_frame_method()->method_data();
-          assert(mdo != NULL, "");
-          int mdi = mdx - 1; // We distinguish valid mdi from zero by adding one.
-          address mdp = mdo->di_to_dp(mdi);
-          interpreter_frame_set_mdx((intptr_t)mdp);
-        }
-      } else {
-        if (is_now_bci) {
-          // The bcx was just converted from bcp to bci.
-          // Convert the mdx in parallel.
-          MethodData* mdo = interpreter_frame_method()->method_data();
-          assert(mdo != NULL, "");
-          int mdi = mdo->dp_to_di((address)mdx);
-          interpreter_frame_set_mdx((intptr_t)mdi + 1); // distinguish valid from 0.
-        }
-      }
-    }
-  } else {
-    *interpreter_frame_bcx_addr() = bcx;
-  }
-}
-
 jint frame::interpreter_frame_bci() const {
   assert(is_interpreted_frame(), "interpreted frame expected");
-  intptr_t bcx = interpreter_frame_bcx();
-  return is_bci(bcx) ? bcx : interpreter_frame_method()->bci_from((address)bcx);
-}
-
-void frame::interpreter_frame_set_bci(jint bci) {
-  assert(is_interpreted_frame(), "interpreted frame expected");
-  assert(!is_bci(interpreter_frame_bcx()), "should not set bci during GC");
-  interpreter_frame_set_bcx((intptr_t)interpreter_frame_method()->bcp_from(bci));
+  address bcp = interpreter_frame_bcp();
+  return interpreter_frame_method()->bci_from(bcp);
 }
 
 address frame::interpreter_frame_bcp() const {
   assert(is_interpreted_frame(), "interpreted frame expected");
-  intptr_t bcx = interpreter_frame_bcx();
-  return is_bci(bcx) ? interpreter_frame_method()->bcp_from(bcx) : (address)bcx;
+  return (address)*interpreter_frame_bcp_addr();
 }
 
 void frame::interpreter_frame_set_bcp(address bcp) {
   assert(is_interpreted_frame(), "interpreted frame expected");
-  assert(!is_bci(interpreter_frame_bcx()), "should not set bcp during GC");
-  interpreter_frame_set_bcx((intptr_t)bcp);
-}
-
-void frame::interpreter_frame_set_mdx(intptr_t mdx) {
-  assert(is_interpreted_frame(), "Not an interpreted frame");
-  assert(ProfileInterpreter, "must be profiling interpreter");
-  *interpreter_frame_mdx_addr() = mdx;
+  *interpreter_frame_bcp_addr() = (intptr_t)bcp;
 }
 
 address frame::interpreter_frame_mdp() const {
   assert(ProfileInterpreter, "must be profiling interpreter");
   assert(is_interpreted_frame(), "interpreted frame expected");
-  intptr_t bcx = interpreter_frame_bcx();
-  intptr_t mdx = interpreter_frame_mdx();
-
-  assert(!is_bci(bcx), "should not access mdp during GC");
-  return (address)mdx;
+  return (address)*interpreter_frame_mdp_addr();
 }
 
 void frame::interpreter_frame_set_mdp(address mdp) {
   assert(is_interpreted_frame(), "interpreted frame expected");
-  if (mdp == NULL) {
-    // Always allow the mdp to be cleared.
-    interpreter_frame_set_mdx((intptr_t)mdp);
-  }
-  intptr_t bcx = interpreter_frame_bcx();
-  assert(!is_bci(bcx), "should not set mdp during GC");
-  interpreter_frame_set_mdx((intptr_t)mdp);
+  assert(ProfileInterpreter, "must be profiling interpreter");
+  *interpreter_frame_mdp_addr() = (intptr_t)mdp;
 }
 
 BasicObjectLock* frame::next_monitor_in_interpreter_frame(BasicObjectLock* current) const {
@@ -1169,24 +1110,6 @@
   }
 }
 
-void frame::gc_prologue() {
-  if (is_interpreted_frame()) {
-    // set bcx to bci to become Method* position independent during GC
-    interpreter_frame_set_bcx(interpreter_frame_bci());
-  }
-}
-
-
-void frame::gc_epilogue() {
-  if (is_interpreted_frame()) {
-    // set bcx back to bcp for interpreter
-    interpreter_frame_set_bcx((intptr_t)interpreter_frame_bcp());
-  }
-  // call processor specific epilog function
-  pd_gc_epilog();
-}
-
-
 # ifdef ENABLE_ZAP_DEAD_LOCALS
 
 void frame::CheckValueClosure::do_oop(oop* p) {

--- a/hotspot/src/share/vm/runtime/frame.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/frame.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -218,8 +218,8 @@
 
  private:
   intptr_t** interpreter_frame_locals_addr() const;
-  intptr_t*  interpreter_frame_bcx_addr() const;
-  intptr_t*  interpreter_frame_mdx_addr() const;
+  intptr_t*  interpreter_frame_bcp_addr() const;
+  intptr_t*  interpreter_frame_mdp_addr() const;
 
  public:
   // Locals
@@ -229,23 +229,13 @@
 
   void interpreter_frame_set_locals(intptr_t* locs);
 
-  // byte code index/pointer (use these functions for unchecked frame access only!)
-  intptr_t interpreter_frame_bcx() const                  { return *interpreter_frame_bcx_addr(); }
-  void interpreter_frame_set_bcx(intptr_t bcx);
-
   // byte code index
   jint interpreter_frame_bci() const;
-  void interpreter_frame_set_bci(jint bci);
 
   // byte code pointer
   address interpreter_frame_bcp() const;
   void    interpreter_frame_set_bcp(address bcp);
 
-  // Unchecked access to the method data index/pointer.
-  // Only use this if you know what you are doing.
-  intptr_t interpreter_frame_mdx() const                  { return *interpreter_frame_mdx_addr(); }
-  void interpreter_frame_set_mdx(intptr_t mdx);
-
   // method data pointer
   address interpreter_frame_mdp() const;
   void    interpreter_frame_set_mdp(address dp);
@@ -414,10 +404,6 @@
   // RedefineClasses support for finding live interpreted methods on the stack
   void metadata_do(void f(Metadata*));
 
-  void gc_prologue();
-  void gc_epilogue();
-  void pd_gc_epilog();
-
 # ifdef ENABLE_ZAP_DEAD_LOCALS
  private:
   class CheckValueClosure: public OopClosure {
@@ -454,7 +440,6 @@
   // Verification
   void verify(const RegisterMap* map);
   static bool verify_return_pc(address x);
-  static bool is_bci(intptr_t bcx);
   // Usage:
   // assert(frame::verify_return_pc(return_address), "must be a return pc");
 

--- a/hotspot/src/share/vm/runtime/frame.inline.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/frame.inline.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -40,26 +40,6 @@
 #endif
 #endif
 
-// This file holds platform-independent bodies of inline functions for frames.
-
-// Note: The bcx usually contains the bcp; however during GC it contains the bci
-//       (changed by gc_prologue() and gc_epilogue()) to be Method* position
-//       independent. These accessors make sure the correct value is returned
-//       by testing the range of the bcx value. bcp's are guaranteed to be above
-//       max_method_code_size, since methods are always allocated in OldSpace and
-//       Eden is allocated before OldSpace.
-//
-//       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
-//       the correct translation has to be performed (was bug).
-
-inline bool frame::is_bci(intptr_t bcx) {
-#ifdef _LP64
-  return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
-#else
-  return 0 <= bcx && bcx <= max_method_code_size;
-#endif
-}
-
 inline bool frame::is_entry_frame() const {
   return StubRoutines::returns_to_call_stub(pc());
 }

--- a/hotspot/src/share/vm/runtime/objectMonitor.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/objectMonitor.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -2497,6 +2497,10 @@
   SETKNOB(FastHSSEC);
   #undef SETKNOB
 
+  if (Knob_Verbose) {
+    sanity_checks();
+  }
+
   if (os::is_MP()) {
      BackOffMask = (1 << Knob_SpinBackOff) - 1;
      if (Knob_ReportSettings) ::printf("BackOffMask=%X\n", BackOffMask);
@@ -2517,6 +2521,66 @@
   InitDone = 1;
 }
 
+void ObjectMonitor::sanity_checks() {
+  int error_cnt = 0;
+  int warning_cnt = 0;
+  bool verbose = Knob_Verbose != 0 NOT_PRODUCT(|| VerboseInternalVMTests);
+
+  if (verbose) {
+    tty->print_cr("INFO: sizeof(ObjectMonitor)=" SIZE_FORMAT,
+                  sizeof(ObjectMonitor));
+  }
+
+  uint cache_line_size = VM_Version::L1_data_cache_line_size();
+  if (verbose) {
+    tty->print_cr("INFO: L1_data_cache_line_size=%u", cache_line_size);
+  }
+
+  ObjectMonitor dummy;
+  u_char *addr_begin  = (u_char*)&dummy;
+  u_char *addr_header = (u_char*)&dummy._header;
+  u_char *addr_owner  = (u_char*)&dummy._owner;
+
+  uint offset_header = (uint)(addr_header - addr_begin);
+  if (verbose) tty->print_cr("INFO: offset(_header)=%u", offset_header);
+
+  uint offset_owner = (uint)(addr_owner - addr_begin);
+  if (verbose) tty->print_cr("INFO: offset(_owner)=%u", offset_owner);
+
+  if ((uint)(addr_header - addr_begin) != 0) {
+    tty->print_cr("ERROR: offset(_header) must be zero (0).");
+    error_cnt++;
+  }
+
+  if (cache_line_size != 0) {
+    // We were able to determine the L1 data cache line size so
+    // do some cache line specific sanity checks
+
+    if ((offset_owner - offset_header) < cache_line_size) {
+      tty->print_cr("WARNING: the _header and _owner fields are closer "
+                    "than a cache line which permits false sharing.");
+      warning_cnt++;
+    }
+
+    if ((sizeof(ObjectMonitor) % cache_line_size) != 0) {
+      tty->print_cr("WARNING: ObjectMonitor size is not a multiple of "
+                    "a cache line which permits false sharing.");
+      warning_cnt++;
+    }
+  }
+
+  ObjectSynchronizer::sanity_checks(verbose, cache_line_size, &error_cnt,
+                                    &warning_cnt);
+
+  if (verbose || error_cnt != 0 || warning_cnt != 0) {
+    tty->print_cr("INFO: error_cnt=%d", error_cnt);
+    tty->print_cr("INFO: warning_cnt=%d", warning_cnt);
+  }
+
+  guarantee(error_cnt == 0,
+            "Fatal error(s) found in ObjectMonitor::sanity_checks()");
+}
+
 #ifndef PRODUCT
 void ObjectMonitor::verify() {
 }

--- a/hotspot/src/share/vm/runtime/objectMonitor.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/objectMonitor.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -189,6 +189,8 @@
   bool      check(TRAPS);       // true if the thread owns the monitor.
   void      check_slow(TRAPS);
   void      clear();
+  static void sanity_checks();  // public for -XX:+ExecuteInternalVMTests
+                                // in PRODUCT for -XX:SyncKnobs=Verbose=1
 #ifndef PRODUCT
   void      verify();
   void      print();
@@ -234,8 +236,6 @@
 
   // WARNING: this must be the very first word of ObjectMonitor
   // This means this class can't use any virtual member functions.
-  // TODO-FIXME: assert that offsetof(_header) is 0 or get rid of the
-  // implicit 0 offset in emitted code.
 
   volatile markOop   _header;       // displaced object header word - mark
   void*     volatile _object;       // backward object pointer - strong root

--- a/hotspot/src/share/vm/runtime/synchronizer.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/synchronizer.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -392,19 +392,22 @@
 // Hash Code handling
 //
 // Performance concern:
-// OrderAccess::storestore() calls release() which STs 0 into the global volatile
-// OrderAccess::Dummy variable.  This store is unnecessary for correctness.
-// Many threads STing into a common location causes considerable cache migration
-// or "sloshing" on large SMP system.  As such, I avoid using OrderAccess::storestore()
-// until it's repaired.  In some cases OrderAccess::fence() -- which incurs local
-// latency on the executing processor -- is a better choice as it scales on SMP
-// systems.  See http://blogs.sun.com/dave/entry/biased_locking_in_hotspot for a
-// discussion of coherency costs.  Note that all our current reference platforms
-// provide strong ST-ST order, so the issue is moot on IA32, x64, and SPARC.
+// OrderAccess::storestore() calls release() which at one time stored 0
+// into the global volatile OrderAccess::dummy variable. This store was
+// unnecessary for correctness. Many threads storing into a common location
+// causes considerable cache migration or "sloshing" on large SMP systems.
+// As such, I avoided using OrderAccess::storestore(). In some cases
+// OrderAccess::fence() -- which incurs local latency on the executing
+// processor -- is a better choice as it scales on SMP systems.
+//
+// See http://blogs.oracle.com/dave/entry/biased_locking_in_hotspot for
+// a discussion of coherency costs. Note that all our current reference
+// platforms provide strong ST-ST order, so the issue is moot on IA32,
+// x64, and SPARC.
 //
 // As a general policy we use "volatile" to control compiler-based reordering
-// and explicit fences (barriers) to control for architectural reordering performed
-// by the CPU(s) or platform.
+// and explicit fences (barriers) to control for architectural reordering
+// performed by the CPU(s) or platform.
 
 struct SharedGlobals {
     // These are highly shared mostly-read variables.
@@ -1596,7 +1599,55 @@
 }
 
 //------------------------------------------------------------------------------
-// Non-product code
+// Debugging code
+
+void ObjectSynchronizer::sanity_checks(const bool verbose,
+                                       const uint cache_line_size,
+                                       int *error_cnt_ptr,
+                                       int *warning_cnt_ptr) {
+  u_char *addr_begin      = (u_char*)&GVars;
+  u_char *addr_stwRandom  = (u_char*)&GVars.stwRandom;
+  u_char *addr_hcSequence = (u_char*)&GVars.hcSequence;
+
+  if (verbose) {
+    tty->print_cr("INFO: sizeof(SharedGlobals)=" SIZE_FORMAT,
+                  sizeof(SharedGlobals));
+  }
+
+  uint offset_stwRandom = (uint)(addr_stwRandom - addr_begin);
+  if (verbose) tty->print_cr("INFO: offset(stwRandom)=%u", offset_stwRandom);
+
+  uint offset_hcSequence = (uint)(addr_hcSequence - addr_begin);
+  if (verbose) {
+    tty->print_cr("INFO: offset(_hcSequence)=%u", offset_hcSequence);
+  }
+
+  if (cache_line_size != 0) {
+    // We were able to determine the L1 data cache line size so
+    // do some cache line specific sanity checks
+
+    if (offset_stwRandom < cache_line_size) {
+      tty->print_cr("WARNING: the SharedGlobals.stwRandom field is closer "
+                    "to the struct beginning than a cache line which permits "
+                    "false sharing.");
+      (*warning_cnt_ptr)++;
+    }
+
+    if ((offset_hcSequence - offset_stwRandom) < cache_line_size) {
+      tty->print_cr("WARNING: the SharedGlobals.stwRandom and "
+                    "SharedGlobals.hcSequence fields are closer than a cache "
+                    "line which permits false sharing.");
+      (*warning_cnt_ptr)++;
+    }
+
+    if ((sizeof(SharedGlobals) - offset_hcSequence) < cache_line_size) {
+      tty->print_cr("WARNING: the SharedGlobals.hcSequence field is closer "
+                    "to the struct end than a cache line which permits false "
+                    "sharing.");
+      (*warning_cnt_ptr)++;
+    }
+  }
+}
 
 #ifndef PRODUCT
 

--- a/hotspot/src/share/vm/runtime/synchronizer.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/synchronizer.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -121,6 +121,9 @@
   static void oops_do(OopClosure* f);
 
   // debugging
+  static void sanity_checks(const bool verbose,
+                            const unsigned int cache_line_size,
+                            int *error_cnt_ptr, int *warning_cnt_ptr);
   static void verify() PRODUCT_RETURN;
   static int  verify_objmon_isinpool(ObjectMonitor *addr) PRODUCT_RETURN0;
 

--- a/hotspot/src/share/vm/runtime/thread.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/thread.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -2649,20 +2649,6 @@
 }
 
 
-// GC support
-static void frame_gc_epilogue(frame* f, const RegisterMap* map) { f->gc_epilogue(); }
-
-void JavaThread::gc_epilogue() {
-  frames_do(frame_gc_epilogue);
-}
-
-
-static void frame_gc_prologue(frame* f, const RegisterMap* map) { f->gc_prologue(); }
-
-void JavaThread::gc_prologue() {
-  frames_do(frame_gc_prologue);
-}
-
 // If the caller is a NamedThread, then remember, in the current scope,
 // the given JavaThread in its _processed_thread field.
 class RememberProcessedThread: public StackObj {
@@ -4151,18 +4137,6 @@
   }
 }
 
-void Threads::gc_epilogue() {
-  ALL_JAVA_THREADS(p) {
-    p->gc_epilogue();
-  }
-}
-
-void Threads::gc_prologue() {
-  ALL_JAVA_THREADS(p) {
-    p->gc_prologue();
-  }
-}
-
 void Threads::deoptimized_wrt_marked_nmethods() {
   ALL_JAVA_THREADS(p) {
     p->deoptimized_wrt_marked_nmethods();

--- a/hotspot/src/share/vm/runtime/thread.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/thread.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -1416,10 +1416,6 @@
   // RedefineClasses Support
   void metadata_do(void f(Metadata*));
 
-  // Memory management operations
-  void gc_epilogue();
-  void gc_prologue();
-
   // Misc. operations
   char* name() const { return (char*)get_thread_name(); }
   void print_on(outputStream* st) const;
@@ -1899,8 +1895,6 @@
   // RedefineClasses support
   static void metadata_do(void f(Metadata*));
 
-  static void gc_epilogue();
-  static void gc_prologue();
 #ifdef ASSERT
   static bool is_vm_complete() { return _vm_complete; }
 #endif

--- a/hotspot/src/share/vm/runtime/vframe.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/vframe.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -511,8 +511,8 @@
 
 inline void vframeStreamCommon::fill_from_interpreter_frame() {
   Method* method = _frame.interpreter_frame_method();
-  intptr_t  bcx    = _frame.interpreter_frame_bcx();
-  int       bci    = method->validate_bci_from_bcx(bcx);
+  address   bcp    = _frame.interpreter_frame_bcp();
+  int       bci    = method->validate_bci_from_bcp(bcp);
   // 6379830 AsyncGetCallTrace sometimes feeds us wild frames.
   if (bci < 0) {
     found_bad_method_frame();

--- a/hotspot/src/share/vm/runtime/vframeArray.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/vframeArray.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -297,9 +297,9 @@
     src->lock()->move_to(src->obj(), top->lock());
   }
   if (ProfileInterpreter) {
-    iframe()->interpreter_frame_set_mdx(0); // clear out the mdp.
+    iframe()->interpreter_frame_set_mdp(0); // clear out the mdp.
   }
-  iframe()->interpreter_frame_set_bcx((intptr_t)bcp); // cannot use bcp because frame is not initialized yet
+  iframe()->interpreter_frame_set_bcp(bcp);
   if (ProfileInterpreter) {
     MethodData* mdo = method()->method_data();
     if (mdo != NULL) {

--- a/hotspot/src/share/vm/runtime/vm_version.cpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/vm_version.cpp	Fri Jul 18 11:22:49 2014 -0400
@@ -36,6 +36,7 @@
 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
+unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
 
 #ifndef HOTSPOT_RELEASE_VERSION

--- a/hotspot/src/share/vm/runtime/vm_version.hpp	Mon Jul 14 10:15:21 2014 -0400
+++ b/hotspot/src/share/vm/runtime/vm_version.hpp	Fri Jul 18 11:22:49 2014 -0400
@@ -42,6 +42,7 @@
   static bool         _supports_atomic_getadd4;
   static bool         _supports_atomic_getadd8;
   static unsigned int _logical_processors_per_package;
+  static unsigned int _L1_data_cache_line_size;
   static int          _vm_major_version;
   static int          _vm_minor_version;
   static int          _vm_micro_version;
@@ -98,6 +99,10 @@
     return _logical_processors_per_package;
   }
 
+  static unsigned int L1_data_cache_line_size() {
+    return _L1_data_cache_line_size;
+  }
+
   // Need a space at the end of TLAB for prefetch instructions
   // which may fault when accessing memory outside of heap.
   static int reserve_for_allocation_prefetch() {