changeset 3512:25544370b08a

Merge jdk7u6-b13
author andrew
date Fri, 08 Jun 2012 17:13:09 +0100
parents 09d95d97bb19 (current diff) 28746e6d615f (diff)
children ed8a0575ebdc
files .hgtags make/hotspot_version make/linux/makefiles/vm.make make/solaris/makefiles/dtrace.make make/solaris/makefiles/jsig.make make/solaris/makefiles/saproc.make make/solaris/makefiles/vm.make src/os/linux/vm/os_linux.cpp src/share/vm/classfile/systemDictionary.cpp src/share/vm/opto/library_call.cpp src/share/vm/runtime/arguments.cpp src/share/vm/utilities/vmError.cpp
diffstat 46 files changed, 1317 insertions(+), 503 deletions(-) [+]
line wrap: on
line diff
--- a/.hgtags	Wed May 23 20:37:54 2012 +0100
+++ b/.hgtags	Fri Jun 08 17:13:09 2012 +0100
@@ -293,3 +293,9 @@
 6b668c1049a8910aabc9d23345d357f20fa24714 jdk7u6-b08
 94d7a305da4dcf46049efd81c2afca512d2afa7f jdk7u6-b09
 1fcba869fe4a932616067e051565590ff375a63b hs23.2-b01
+702b62a5e1a546ba5eea17619f9056a86fec03f1 jdk7u6-b10
+b7ae1ee1d2e49bbfbcf35587cb51c04abf2710a2 hs23.2-b02
+5921bdc6ce5cd9e3511a4177f9995becb2c2981d jdk7u6-b11
+e974e15945658e574e6c344c4a7ba225f5708c10 hs23.2-b03
+f08a3a0e60c32cb0e8350e72fdc54849759096a4 jdk7u6-b12
+7a8d3cd6562170f4c262e962270f679ac503f456 hs23.2-b04
--- a/make/hotspot_version	Wed May 23 20:37:54 2012 +0100
+++ b/make/hotspot_version	Fri Jun 08 17:13:09 2012 +0100
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=23
 HS_MINOR_VER=2
-HS_BUILD_NUMBER=01
+HS_BUILD_NUMBER=04
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=7
--- a/make/jprt.properties	Wed May 23 20:37:54 2012 +0100
+++ b/make/jprt.properties	Fri Jun 08 17:13:09 2012 +0100
@@ -38,7 +38,7 @@
 
 # This tells jprt what default release we want to build
 
-jprt.hotspot.default.release=jdk7u4
+jprt.hotspot.default.release=jdk7u6
 
 jprt.tools.default.release=${jprt.submit.option.release?${jprt.submit.option.release}:${jprt.hotspot.default.release}}
 
@@ -54,72 +54,72 @@
 # Define the Solaris platforms we want for the various releases
 jprt.my.solaris.sparc.jdk8=solaris_sparc_5.10
 jprt.my.solaris.sparc.jdk7=solaris_sparc_5.10
-jprt.my.solaris.sparc.jdk7u4=${jprt.my.solaris.sparc.jdk7}
+jprt.my.solaris.sparc.jdk7u6=${jprt.my.solaris.sparc.jdk7}
 jprt.my.solaris.sparc=${jprt.my.solaris.sparc.${jprt.tools.default.release}}
 
 jprt.my.solaris.sparcv9.jdk8=solaris_sparcv9_5.10
 jprt.my.solaris.sparcv9.jdk7=solaris_sparcv9_5.10
-jprt.my.solaris.sparcv9.jdk7u4=${jprt.my.solaris.sparcv9.jdk7}
+jprt.my.solaris.sparcv9.jdk7u6=${jprt.my.solaris.sparcv9.jdk7}
 jprt.my.solaris.sparcv9=${jprt.my.solaris.sparcv9.${jprt.tools.default.release}}
 
 jprt.my.solaris.i586.jdk8=solaris_i586_5.10
 jprt.my.solaris.i586.jdk7=solaris_i586_5.10
-jprt.my.solaris.i586.jdk7u4=${jprt.my.solaris.i586.jdk7}
+jprt.my.solaris.i586.jdk7u6=${jprt.my.solaris.i586.jdk7}
 jprt.my.solaris.i586=${jprt.my.solaris.i586.${jprt.tools.default.release}}
 
 jprt.my.solaris.x64.jdk8=solaris_x64_5.10
 jprt.my.solaris.x64.jdk7=solaris_x64_5.10
-jprt.my.solaris.x64.jdk7u4=${jprt.my.solaris.x64.jdk7}
+jprt.my.solaris.x64.jdk7u6=${jprt.my.solaris.x64.jdk7}
 jprt.my.solaris.x64=${jprt.my.solaris.x64.${jprt.tools.default.release}}
 
 jprt.my.linux.i586.jdk8=linux_i586_2.6
 jprt.my.linux.i586.jdk7=linux_i586_2.6
-jprt.my.linux.i586.jdk7u4=${jprt.my.linux.i586.jdk7}
+jprt.my.linux.i586.jdk7u6=${jprt.my.linux.i586.jdk7}
 jprt.my.linux.i586=${jprt.my.linux.i586.${jprt.tools.default.release}}
 
 jprt.my.linux.x64.jdk8=linux_x64_2.6
 jprt.my.linux.x64.jdk7=linux_x64_2.6
-jprt.my.linux.x64.jdk7u4=${jprt.my.linux.x64.jdk7}
+jprt.my.linux.x64.jdk7u6=${jprt.my.linux.x64.jdk7}
 jprt.my.linux.x64=${jprt.my.linux.x64.${jprt.tools.default.release}}
 
 jprt.my.linux.ppc.jdk8=linux_ppc_2.6
 jprt.my.linux.ppc.jdk7=linux_ppc_2.6
-jprt.my.linux.ppc.jdk7u4=${jprt.my.linux.ppc.jdk7}
+jprt.my.linux.ppc.jdk7u6=${jprt.my.linux.ppc.jdk7}
 jprt.my.linux.ppc=${jprt.my.linux.ppc.${jprt.tools.default.release}}
 
 jprt.my.linux.ppcv2.jdk8=linux_ppcv2_2.6
 jprt.my.linux.ppcv2.jdk7=linux_ppcv2_2.6
-jprt.my.linux.ppcv2.jdk7u4=${jprt.my.linux.ppcv2.jdk7}
+jprt.my.linux.ppcv2.jdk7u6=${jprt.my.linux.ppcv2.jdk7}
 jprt.my.linux.ppcv2=${jprt.my.linux.ppcv2.${jprt.tools.default.release}}
 
 jprt.my.linux.ppcsflt.jdk8=linux_ppcsflt_2.6
 jprt.my.linux.ppcsflt.jdk7=linux_ppcsflt_2.6
-jprt.my.linux.ppcsflt.jdk7u4=${jprt.my.linux.ppcsflt.jdk7}
+jprt.my.linux.ppcsflt.jdk7u6=${jprt.my.linux.ppcsflt.jdk7}
 jprt.my.linux.ppcsflt=${jprt.my.linux.ppcsflt.${jprt.tools.default.release}}
 
 jprt.my.linux.armvfp.jdk8=linux_armvfp_2.6
 jprt.my.linux.armvfp.jdk7=linux_armvfp_2.6
-jprt.my.linux.armvfp.jdk7u4=${jprt.my.linux.armvfp.jdk7}
+jprt.my.linux.armvfp.jdk7u6=${jprt.my.linux.armvfp.jdk7}
 jprt.my.linux.armvfp=${jprt.my.linux.armvfp.${jprt.tools.default.release}}
 
 jprt.my.linux.armsflt.jdk8=linux_armsflt_2.6
 jprt.my.linux.armsflt.jdk7=linux_armsflt_2.6
-jprt.my.linux.armsflt.jdk7u4=${jprt.my.linux.armsflt.jdk7}
+jprt.my.linux.armsflt.jdk7u6=${jprt.my.linux.armsflt.jdk7}
 jprt.my.linux.armsflt=${jprt.my.linux.armsflt.${jprt.tools.default.release}}
 
 jprt.my.macosx.x64.jdk8=macosx_x64_10.7
 jprt.my.macosx.x64.jdk7=macosx_x64_10.7
-jprt.my.macosx.x64.jdk7u4=${jprt.my.macosx.x64.jdk7}
+jprt.my.macosx.x64.jdk7u6=${jprt.my.macosx.x64.jdk7}
 jprt.my.macosx.x64=${jprt.my.macosx.x64.${jprt.tools.default.release}}
 
 jprt.my.windows.i586.jdk8=windows_i586_5.1
 jprt.my.windows.i586.jdk7=windows_i586_5.1
-jprt.my.windows.i586.jdk7u4=${jprt.my.windows.i586.jdk7}
+jprt.my.windows.i586.jdk7u6=${jprt.my.windows.i586.jdk7}
 jprt.my.windows.i586=${jprt.my.windows.i586.${jprt.tools.default.release}}
 
 jprt.my.windows.x64.jdk8=windows_x64_5.2
 jprt.my.windows.x64.jdk7=windows_x64_5.2
-jprt.my.windows.x64.jdk7u4=${jprt.my.windows.x64.jdk7}
+jprt.my.windows.x64.jdk7u6=${jprt.my.windows.x64.jdk7}
 jprt.my.windows.x64=${jprt.my.windows.x64.${jprt.tools.default.release}}
 
 # Standard list of jprt build targets for this source tree
@@ -133,7 +133,8 @@
     ${jprt.my.linux.x64}-{product|fastdebug}, \
     ${jprt.my.macosx.x64}-{product|fastdebug|debug}, \
     ${jprt.my.windows.i586}-{product|fastdebug|debug}, \
-    ${jprt.my.windows.x64}-{product|fastdebug|debug}
+    ${jprt.my.windows.x64}-{product|fastdebug|debug}, \
+    ${jprt.my.linux.armvfp}-{product|fastdebug}
 
 jprt.build.targets.open= \
     ${jprt.my.solaris.i586}-{productOpen}, \
@@ -153,7 +154,7 @@
 
 jprt.build.targets.jdk8=${jprt.build.targets.all}
 jprt.build.targets.jdk7=${jprt.build.targets.all}
-jprt.build.targets.jdk7u4=${jprt.build.targets.all}
+jprt.build.targets.jdk7u6=${jprt.build.targets.all}
 jprt.build.targets.jdk7temp=${jprt.build.targets.all}
 jprt.build.targets.jdk7b107=${jprt.build.targets.all}
 jprt.build.targets.jdk6=${jprt.build.targets.standard}
@@ -456,7 +457,7 @@
 
 jprt.test.targets.jdk8=${jprt.test.targets.standard}
 jprt.test.targets.jdk7=${jprt.test.targets.standard}
-jprt.test.targets.jdk7u4=${jprt.test.targets.jdk7}
+jprt.test.targets.jdk7u6=${jprt.test.targets.jdk7}
 jprt.test.targets=${jprt.test.targets.${jprt.tools.default.release}}
 
 # The default test/Makefile targets that should be run
@@ -501,6 +502,6 @@
 
 jprt.make.rule.test.targets.jdk8=${jprt.make.rule.test.targets.standard}
 jprt.make.rule.test.targets.jdk7=${jprt.make.rule.test.targets.standard}
-jprt.make.rule.test.targets.jdk7u4=${jprt.make.rule.test.targets.jdk7}
+jprt.make.rule.test.targets.jdk7u6=${jprt.make.rule.test.targets.jdk7}
 jprt.make.rule.test.targets=${jprt.make.rule.test.targets.${jprt.tools.default.release}}
 
--- a/make/linux/makefiles/vm.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/linux/makefiles/vm.make	Fri Jun 08 17:13:09 2012 +0100
@@ -106,9 +106,11 @@
 # a time and date. 
 vm_version.o: CXXFLAGS += ${JRE_VERSION}
 
-ifndef JAVASE_EMBEDDED
+ifndef JAVASE_EMBEDDED 
+ifneq (${ARCH},arm)
 CFLAGS += -DINCLUDE_TRACE
 endif
+endif
 
 ifdef DISTRIBUTION_ID
 CPPFLAGS += -DDISTRIBUTION_ID="\"$(DISTRIBUTION_ID)\""
@@ -161,11 +163,13 @@
 SOURCE_PATHS+=$(HS_COMMON_SRC)/cpu/$(Platform_arch)/vm
 SOURCE_PATHS+=$(HS_COMMON_SRC)/os_cpu/$(Platform_os_arch)/vm
 
-ifndef JAVASE_EMBEDDED
+ifndef JAVASE_EMBEDDED 
+ifneq (${ARCH},arm)
 SOURCE_PATHS+=$(shell if [ -d $(HS_ALT_SRC)/share/vm/jfr ]; then \
   find $(HS_ALT_SRC)/share/vm/jfr -type d; \
   fi)
 endif
+endif
 
 CORE_PATHS=$(foreach path,$(SOURCE_PATHS),$(call altsrc,$(path)) $(path))
 CORE_PATHS+=$(GENERATED)/jvmtifiles
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/solaris/makefiles/add_gnu_debuglink.make	Fri Jun 08 17:13:09 2012 +0100
@@ -0,0 +1,51 @@
+#
+# Copyright (c) 2012, 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.
+#  
+#
+
+# Rules to build add_gnu_debuglink, used by vm.make on Solaris
+
+GENERATED                 = ../generated
+ADD_GNU_DEBUGLINK         = $(GENERATED)/add_gnu_debuglink
+
+ADD_GNU_DEBUGLINK_DIR     = $(GAMMADIR)/src/os/solaris/add_gnu_debuglink
+ADD_GNU_DEBUGLINK_SRC     = $(ADD_GNU_DEBUGLINK_DIR)/add_gnu_debuglink.c
+ADD_GNU_DEBUGLINK_FLAGS   = 
+LIBS_ADD_GNU_DEBUGLINK   += -lelf
+
+ifeq ("${Platform_compiler}", "sparcWorks")
+# Enable the following ADD_GNU_DEBUGLINK_FLAGS addition if you need to
+# compare the built ELF objects.
+#
+# The -g option makes static data global and the "-W0,-noglobal"
+# option tells the compiler to not globalize static data using a unique
+# globalization prefix. Instead force the use of a static globalization
+# prefix based on the source filepath so the objects from two identical
+# compilations are the same.
+#
+# Note: The blog says to use "-W0,-xglobalstatic", but that doesn't
+#       seem to work. I got "-W0,-noglobal" from Kelly and that works.
+#ADD_GNU_DEBUGLINK_FLAGS += -W0,-noglobal
+endif # Platform_compiler == sparcWorks
+
+$(ADD_GNU_DEBUGLINK): $(ADD_GNU_DEBUGLINK_SRC)
+	$(CC) -g -o $@ $< $(ADD_GNU_DEBUGLINK_FLAGS) $(LIBS_ADD_GNU_DEBUGLINK)
--- a/make/solaris/makefiles/defs.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/solaris/makefiles/defs.make	Fri Jun 08 17:13:09 2012 +0100
@@ -97,18 +97,12 @@
   # overridden in some situations, e.g., a BUILD_FLAVOR != product
   # build.
 
-  # Disable FULL_DEBUG_SYMBOLS by default because dtrace tests are
-  # failing in nightly when the debug info files are ZIP'ed. On
-  # Solaris debug info files need to be ZIP'ed to reduce the impact
-  # on disk space footprint.
-  FULL_DEBUG_SYMBOLS ?= 0
   ifeq ($(BUILD_FLAVOR), product)
-    # FULL_DEBUG_SYMBOLS ?= 1
+    FULL_DEBUG_SYMBOLS ?= 1
     ENABLE_FULL_DEBUG_SYMBOLS = $(FULL_DEBUG_SYMBOLS)
   else
     # debug variants always get Full Debug Symbols (if available)
-    # ENABLE_FULL_DEBUG_SYMBOLS = 1
-    ENABLE_FULL_DEBUG_SYMBOLS = $(FULL_DEBUG_SYMBOLS)
+    ENABLE_FULL_DEBUG_SYMBOLS = 1
   endif
   _JUNK_ := $(shell \
     echo >&2 "INFO: ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)")
@@ -117,25 +111,10 @@
   ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
     # Default OBJCOPY comes from the SUNWbinutils package:
     DEF_OBJCOPY=/usr/sfw/bin/gobjcopy
-    ifeq ($(VM_PLATFORM),solaris_amd64)
-      # On Solaris AMD64/X64, gobjcopy is not happy and fails:
-      #
-      # usr/sfw/bin/gobjcopy --add-gnu-debuglink=<lib>.debuginfo <lib>.so
-      # BFD: stKPaiop: Not enough room for program headers, try linking with -N
-      # /usr/sfw/bin/gobjcopy: stKPaiop: Bad value
-      # BFD: stKPaiop: Not enough room for program headers, try linking with -N
-      # /usr/sfw/bin/gobjcopy: libsaproc.debuginfo: Bad value
-      # BFD: stKPaiop: Not enough room for program headers, try linking with -N
-      # /usr/sfw/bin/gobjcopy: stKPaiop: Bad value
-      _JUNK_ := $(shell \
-        echo >&2 "INFO: $(DEF_OBJCOPY) is not working on Solaris AMD64/X64")
-      OBJCOPY=
-    else
-      OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
-      ifneq ($(ALT_OBJCOPY),)
-        _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
-        OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
-      endif
+    OBJCOPY=$(shell test -x $(DEF_OBJCOPY) && echo $(DEF_OBJCOPY))
+    ifneq ($(ALT_OBJCOPY),)
+      _JUNK_ := $(shell echo >&2 "INFO: ALT_OBJCOPY=$(ALT_OBJCOPY)")
+      OBJCOPY=$(shell test -x $(ALT_OBJCOPY) && echo $(ALT_OBJCOPY))
     endif
   else
     OBJCOPY=
@@ -166,9 +145,7 @@
     _JUNK_ := $(shell \
       echo >&2 "INFO: STRIP_POLICY=$(STRIP_POLICY)")
 
-    # Disable ZIP_DEBUGINFO_FILES by default because dtrace tests are
-    # failing in nightly when the debug info files are ZIP'ed. 
-    ZIP_DEBUGINFO_FILES ?= 0
+    ZIP_DEBUGINFO_FILES ?= 1
 
     _JUNK_ := $(shell \
       echo >&2 "INFO: ZIP_DEBUGINFO_FILES=$(ZIP_DEBUGINFO_FILES)")
--- a/make/solaris/makefiles/dtrace.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/solaris/makefiles/dtrace.make	Fri Jun 08 17:13:09 2012 +0100
@@ -108,7 +108,7 @@
 XLIBJVM_DTRACE_G_DEBUGINFO = 64/$(LIBJVM_DTRACE_G_DEBUGINFO)
 XLIBJVM_DTRACE_G_DIZ       = 64/$(LIBJVM_DTRACE_G_DIZ)
 
-$(XLIBJVM_DB): $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS).h $(LIBJVM_DB_MAPFILE)
+$(XLIBJVM_DB): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS).h $(LIBJVM_DB_MAPFILE)
 	@echo Making $@
 	$(QUIETLY) mkdir -p 64/ ; \
 	$(CC) $(SYMFLAG) $(ARCHFLAG/$(ISA)) -D$(TYPE) -I. -I$(GENERATED) \
@@ -116,8 +116,17 @@
 	[ -f $(XLIBJVM_DB_G) ] || { ln -s $(LIBJVM_DB) $(XLIBJVM_DB_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# gobjcopy crashes on "empty" section headers with the SHF_ALLOC flag set.
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+# An empty section header has sh_addr == 0 and sh_size == 0.
+# This problem has only been seen on Solaris X64, but we call this tool
+# on all Solaris builds just in case.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(XLIBJVM_DB_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(XLIBJVM_DB_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+# Use $(ADD_GNU_DEBUGLINK) until a fixed $(OBJCOPY) is available.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(XLIBJVM_DB_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(XLIBJVM_DB_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
@@ -137,7 +146,7 @@
   endif
 endif
 
-$(XLIBJVM_DTRACE): $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
+$(XLIBJVM_DTRACE): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
 	@echo Making $@
 	$(QUIETLY) mkdir -p 64/ ; \
 	$(CC) $(SYMFLAG) $(ARCHFLAG/$(ISA)) -D$(TYPE) -I. \
@@ -145,8 +154,12 @@
 	[ -f $(XLIBJVM_DTRACE_G) ] || { ln -s $(LIBJVM_DTRACE) $(XLIBJVM_DTRACE_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(XLIBJVM_DTRACE_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(XLIBJVM_DTRACE_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(XLIBJVM_DTRACE_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(XLIBJVM_DTRACE_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
@@ -206,15 +219,19 @@
 $(JVMOFFS.o): $(JVMOFFS).h $(JVMOFFS).cpp 
 	$(QUIETLY) $(CXX) -c -I. -o $@ $(ARCHFLAG) -D$(TYPE) $(JVMOFFS).cpp
 
-$(LIBJVM_DB): $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS.o) $(XLIBJVM_DB) $(LIBJVM_DB_MAPFILE)
+$(LIBJVM_DB): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DB).c $(JVMOFFS.o) $(XLIBJVM_DB) $(LIBJVM_DB_MAPFILE)
 	@echo Making $@
 	$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I. -I$(GENERATED) \
 		$(SHARED_FLAG) $(LFLAGS_JVM_DB) -o $@ $(DTRACE_SRCDIR)/$(JVM_DB).c -lc
 	[ -f $(LIBJVM_DB_G) ] || { ln -s $@ $(LIBJVM_DB_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJVM_DB_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DB_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DB_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(LIBJVM_DB_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
@@ -234,15 +251,19 @@
   endif
 endif
 
-$(LIBJVM_DTRACE): $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(XLIBJVM_DTRACE) $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
+$(LIBJVM_DTRACE): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(DTRACE_SRCDIR)/$(JVM_DTRACE).c $(XLIBJVM_DTRACE) $(DTRACE_SRCDIR)/$(JVM_DTRACE).h $(LIBJVM_DTRACE_MAPFILE)
 	@echo Making $@
 	$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) -D$(TYPE) -I.  \
 		$(SHARED_FLAG) $(LFLAGS_JVM_DTRACE) -o $@ $(DTRACE_SRCDIR)/$(JVM_DTRACE).c -lc -lthread -ldoor
 	[ -f $(LIBJVM_DTRACE_G) ] || { ln -s $@ $(LIBJVM_DTRACE_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJVM_DTRACE_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DTRACE_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DTRACE_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(LIBJVM_DTRACE_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/solaris/makefiles/fix_empty_sec_hdr_flags.make	Fri Jun 08 17:13:09 2012 +0100
@@ -0,0 +1,51 @@
+#
+# Copyright (c) 2012, 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.
+#  
+#
+
+# Rules to build fix_empty_sec_hdr_flags, used by vm.make on Solaris
+
+GENERATED                       = ../generated
+FIX_EMPTY_SEC_HDR_FLAGS         = $(GENERATED)/fix_empty_sec_hdr_flags
+
+FIX_EMPTY_SEC_HDR_FLAGS_DIR     = $(GAMMADIR)/src/os/solaris/fix_empty_sec_hdr_flags
+FIX_EMPTY_SEC_HDR_FLAGS_SRC     = $(FIX_EMPTY_SEC_HDR_FLAGS_DIR)/fix_empty_sec_hdr_flags.c
+FIX_EMPTY_SEC_HDR_FLAGS_FLAGS   = 
+LIBS_FIX_EMPTY_SEC_HDR_FLAGS   += -lelf
+
+ifeq ("${Platform_compiler}", "sparcWorks")
+# Enable the following FIX_EMPTY_SEC_HDR_FLAGS_FLAGS addition if you need to
+# compare the built ELF objects.
+#
+# The -g option makes static data global and the "-W0,-noglobal"
+# option tells the compiler to not globalize static data using a unique
+# globalization prefix. Instead force the use of a static globalization
+# prefix based on the source filepath so the objects from two identical
+# compilations are the same.
+#
+# Note: The blog says to use "-W0,-xglobalstatic", but that doesn't
+#       seem to work. I got "-W0,-noglobal" from Kelly and that works.
+#FIX_EMPTY_SEC_HDR_FLAGS_FLAGS += -W0,-noglobal
+endif # Platform_compiler == sparcWorks
+
+$(FIX_EMPTY_SEC_HDR_FLAGS): $(FIX_EMPTY_SEC_HDR_FLAGS_SRC)
+	$(CC) -g -o $@ $< $(FIX_EMPTY_SEC_HDR_FLAGS_FLAGS) $(LIBS_FIX_EMPTY_SEC_HDR_FLAGS)
--- a/make/solaris/makefiles/jsig.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/solaris/makefiles/jsig.make	Fri Jun 08 17:13:09 2012 +0100
@@ -52,15 +52,24 @@
 LFLAGS_JSIG += -mt -xnolib
 endif
 
-$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
+$(LIBJSIG): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
 	@echo Making signal interposition lib...
 	$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
-                         $(LFLAGS_JSIG) -o $@ $< -ldl
+                         $(LFLAGS_JSIG) -o $@ $(JSIGSRCDIR)/jsig.c -ldl
 	[ -f $(LIBJSIG_G) ] || { ln -s $@ $(LIBJSIG_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# gobjcopy crashes on "empty" section headers with the SHF_ALLOC flag set.
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+# An empty section header has sh_addr == 0 and sh_size == 0.
+# This problem has only been seen on Solaris X64, but we call this tool
+# on all Solaris builds just in case.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJSIG_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJSIG_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+# Use $(ADD_GNU_DEBUGLINK) until a fixed $(OBJCOPY) is available.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJSIG_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(LIBJSIG_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
--- a/make/solaris/makefiles/saproc.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/solaris/makefiles/saproc.make	Fri Jun 08 17:13:09 2012 +0100
@@ -90,7 +90,7 @@
 # when actually building on Nevada-B158 or earlier:
 #SOLARIS_11_B159_OR_LATER=-DSOLARIS_11_B159_OR_LATER
 
-$(LIBSAPROC): $(SASRCFILES) $(SAMAPFILE)
+$(LIBSAPROC): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(SASRCFILES) $(SAMAPFILE)
 	$(QUIETLY) if [ "$(BOOT_JAVA_HOME)" = "" ]; then \
 	  echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
 	  exit 1; \
@@ -110,8 +110,17 @@
 	[ -f $(LIBSAPROC_G) ] || { ln -s $@ $(LIBSAPROC_G); }
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# gobjcopy crashes on "empty" section headers with the SHF_ALLOC flag set.
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+# An empty section header has sh_addr == 0 and sh_size == 0.
+# This problem has only been seen on Solaris X64, but we call this tool
+# on all Solaris builds just in case.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBSAPROC_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBSAPROC_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+# Use $(ADD_GNU_DEBUGLINK) until a fixed $(OBJCOPY) is available.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBSAPROC_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(LIBSAPROC_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
--- a/make/solaris/makefiles/vm.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/solaris/makefiles/vm.make	Fri Jun 08 17:13:09 2012 +0100
@@ -153,6 +153,14 @@
 include $(MAKEFILES_DIR)/dtrace.make
 
 #----------------------------------------------------------------------
+# add_gnu_debuglink tool
+include $(MAKEFILES_DIR)/add_gnu_debuglink.make
+
+#----------------------------------------------------------------------
+# fix_empty_sec_hdr_flags tool
+include $(MAKEFILES_DIR)/fix_empty_sec_hdr_flags.make
+
+#----------------------------------------------------------------------
 # JVM
 
 JVM      = jvm
@@ -284,7 +292,7 @@
 LINK_VM = $(LINK_LIB.CXX)
 endif
 # making the library:
-$(LIBJVM): $(LIBJVM.o) $(LIBJVM_MAPFILE) 
+$(LIBJVM): $(ADD_GNU_DEBUGLINK) $(FIX_EMPTY_SEC_HDR_FLAGS) $(LIBJVM.o) $(LIBJVM_MAPFILE) 
 ifeq ($(filter -sbfast -xsbfast, $(CFLAGS_BROWSE)),)
 	@echo Linking vm...
 	$(QUIETLY) $(LINK_LIB.CXX/PRE_HOOK)
@@ -295,8 +303,17 @@
 	$(QUIETLY) [ -f $(LIBJVM_G).1 ] || ln -s $@.1 $(LIBJVM_G).1
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
   ifneq ($(STRIP_POLICY),no_strip)
+# gobjcopy crashes on "empty" section headers with the SHF_ALLOC flag set.
+# Clear the SHF_ALLOC flag (if set) from empty section headers.
+# An empty section header has sh_addr == 0 and sh_size == 0.
+# This problem has only been seen on Solaris X64, but we call this tool
+# on all Solaris builds just in case.
+	$(QUIETLY) $(FIX_EMPTY_SEC_HDR_FLAGS) $@
 	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJVM_DEBUGINFO)
-	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DEBUGINFO) $@
+# $(OBJCOPY) --add-gnu-debuglink=... corrupts SUNW_* sections.
+# Use $(ADD_GNU_DEBUGLINK) until a fixed $(OBJCOPY) is available.
+#	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DEBUGINFO) $@
+	$(QUIETLY) $(ADD_GNU_DEBUGLINK) $(LIBJVM_DEBUGINFO) $@
   endif
   ifeq ($(STRIP_POLICY),all_strip)
 	$(QUIETLY) $(STRIP) $@
--- a/make/windows/makefiles/defs.make	Wed May 23 20:37:54 2012 +0100
+++ b/make/windows/makefiles/defs.make	Fri Jun 08 17:13:09 2012 +0100
@@ -143,9 +143,7 @@
 MAKE_ARGS += ENABLE_FULL_DEBUG_SYMBOLS=$(ENABLE_FULL_DEBUG_SYMBOLS)
 
 ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
-  # Disable ZIP_DEBUGINFO_FILES by default because various tests are
-  # failing in nightly when the debug info files are ZIP'ed. 
-  ZIP_DEBUGINFO_FILES ?= 0
+  ZIP_DEBUGINFO_FILES ?= 1
 else
   ZIP_DEBUGINFO_FILES=0
 endif
--- a/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2012, 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
@@ -238,9 +238,12 @@
 
   Register result = dst->as_register();
   {
-    // Get a pointer to the first character of string0 in tmp0 and get string0.count in str0
-    // Get a pointer to the first character of string1 in tmp1 and get string1.count in str1
-    // Also, get string0.count-string1.count in o7 and get the condition code set
+    // Get a pointer to the first character of string0 in tmp0
+    //   and get string0.length() in str0
+    // Get a pointer to the first character of string1 in tmp1
+    //   and get string1.length() in str1
+    // Also, get string0.length()-string1.length() in
+    //   o7 and get the condition code set
     // Note: some instructions have been hoisted for better instruction scheduling
 
     Register tmp0 = L0;
@@ -248,27 +251,40 @@
     Register tmp2 = L2;
 
     int  value_offset = java_lang_String:: value_offset_in_bytes(); // char array
-    int offset_offset = java_lang_String::offset_offset_in_bytes(); // first character position
-    int  count_offset = java_lang_String:: count_offset_in_bytes();
-
-    __ load_heap_oop(str0, value_offset, tmp0);
-    __ ld(str0, offset_offset, tmp2);
-    __ add(tmp0, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp0);
-    __ ld(str0, count_offset, str0);
-    __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2);
+    if (java_lang_String::has_offset_field()) {
+      int offset_offset = java_lang_String::offset_offset_in_bytes(); // first character position
+      int  count_offset = java_lang_String:: count_offset_in_bytes();
+      __ load_heap_oop(str0, value_offset, tmp0);
+      __ ld(str0, offset_offset, tmp2);
+      __ add(tmp0, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp0);
+      __ ld(str0, count_offset, str0);
+      __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2);
+    } else {
+      __ load_heap_oop(str0, value_offset, tmp1);
+      __ add(tmp1, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp0);
+      __ ld(tmp1, arrayOopDesc::length_offset_in_bytes(), str0);
+    }
 
     // str1 may be null
     add_debug_info_for_null_check_here(info);
 
-    __ load_heap_oop(str1, value_offset, tmp1);
-    __ add(tmp0, tmp2, tmp0);
-
-    __ ld(str1, offset_offset, tmp2);
-    __ add(tmp1, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp1);
-    __ ld(str1, count_offset, str1);
-    __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2);
+    if (java_lang_String::has_offset_field()) {
+      int offset_offset = java_lang_String::offset_offset_in_bytes(); // first character position
+      int  count_offset = java_lang_String:: count_offset_in_bytes();
+      __ load_heap_oop(str1, value_offset, tmp1);
+      __ add(tmp0, tmp2, tmp0);
+
+      __ ld(str1, offset_offset, tmp2);
+      __ add(tmp1, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp1);
+      __ ld(str1, count_offset, str1);
+      __ sll(tmp2, exact_log2(sizeof(jchar)), tmp2);
+      __ add(tmp1, tmp2, tmp1);
+    } else {
+      __ load_heap_oop(str1, value_offset, tmp2);
+      __ add(tmp2, arrayOopDesc::base_offset_in_bytes(T_CHAR), tmp1);
+      __ ld(tmp2, arrayOopDesc::length_offset_in_bytes(), str1);
+    }
     __ subcc(str0, str1, O7);
-    __ add(tmp1, tmp2, tmp1);
   }
 
   {
@@ -302,7 +318,7 @@
     // Shift base0 and base1 to the end of the arrays, negate limit
     __ add(base0, limit, base0);
     __ add(base1, limit, base1);
-    __ neg(limit);  // limit = -min{string0.count, strin1.count}
+    __ neg(limit);  // limit = -min{string0.length(), string1.length()}
 
     __ lduh(base0, limit, chr0);
     __ bind(Lloop);
--- a/src/cpu/x86/vm/assembler_x86.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -528,10 +528,12 @@
     if (which == end_pc_operand)  return ip + (is_64bit ? 8 : 4);
     // these asserts are somewhat nonsensical
 #ifndef _LP64
-    assert(which == imm_operand || which == disp32_operand, "");
+    assert(which == imm_operand || which == disp32_operand,
+           err_msg("which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, ip));
 #else
     assert((which == call32_operand || which == imm_operand) && is_64bit ||
-           which == narrow_oop_operand && !is_64bit, "");
+           which == narrow_oop_operand && !is_64bit,
+           err_msg("which %d is_64_bit %d ip " INTPTR_FORMAT, which, is_64bit, ip));
 #endif // _LP64
     return ip;
 
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2012, 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
@@ -505,19 +505,28 @@
 
   // Get addresses of first characters from both Strings
   __ load_heap_oop(rsi, Address(rax, java_lang_String::value_offset_in_bytes()));
-  __ movptr       (rcx, Address(rax, java_lang_String::offset_offset_in_bytes()));
-  __ lea          (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
-
+  if (java_lang_String::has_offset_field()) {
+    __ movptr     (rcx, Address(rax, java_lang_String::offset_offset_in_bytes()));
+    __ movl       (rax, Address(rax, java_lang_String::count_offset_in_bytes()));
+    __ lea        (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+  } else {
+    __ movl       (rax, Address(rsi, arrayOopDesc::length_offset_in_bytes()));
+    __ lea        (rsi, Address(rsi, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+  }
 
   // rbx, may be NULL
   add_debug_info_for_null_check_here(info);
   __ load_heap_oop(rdi, Address(rbx, java_lang_String::value_offset_in_bytes()));
-  __ movptr       (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes()));
-  __ lea          (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+  if (java_lang_String::has_offset_field()) {
+    __ movptr     (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes()));
+    __ movl       (rbx, Address(rbx, java_lang_String::count_offset_in_bytes()));
+    __ lea        (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+  } else {
+    __ movl       (rbx, Address(rdi, arrayOopDesc::length_offset_in_bytes()));
+    __ lea        (rdi, Address(rdi, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+  }
 
   // compute minimum length (in rax) and difference of lengths (on top of stack)
-  __ movl  (rbx, Address(rbx, java_lang_String::count_offset_in_bytes()));
-  __ movl  (rax, Address(rax, java_lang_String::count_offset_in_bytes()));
   __ mov   (rcx, rbx);
   __ subptr(rbx, rax); // subtract lengths
   __ push  (rbx);      // result
@@ -1462,7 +1471,11 @@
       break;
 
     case Bytecodes::_l2i:
+#ifdef _LP64
+      __ movl(dest->as_register(), src->as_register_lo());
+#else
       move_regs(src->as_register_lo(), dest->as_register());
+#endif
       break;
 
     case Bytecodes::_i2b:
--- a/src/cpu/x86/vm/x86_64.ad	Wed May 23 20:37:54 2012 +0100
+++ b/src/cpu/x86/vm/x86_64.ad	Fri Jun 08 17:13:09 2012 +0100
@@ -3361,15 +3361,6 @@
   interface(CONST_INTER);
 %}
 
-operand immP_poll() %{
-  predicate(n->get_ptr() != 0 && n->get_ptr() == (intptr_t)os::get_polling_page());
-  match(ConP);
-
-  // formats are generated automatically for constants and base registers
-  format %{ %}
-  interface(CONST_INTER);
-%}
-
 // Pointer Immediate
 operand immN() %{
   match(ConN);
@@ -5718,16 +5709,6 @@
   ins_pipe(ialu_reg);
 %}
 
-instruct loadConP_poll(rRegP dst, immP_poll src) %{
-  match(Set dst src);
-  format %{ "movq    $dst, $src\t!ptr" %}
-  ins_encode %{
-    AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_type);
-    __ lea($dst$$Register, polling_page);
-  %}
-  ins_pipe(ialu_reg_fat);
-%}
-
 instruct loadConP31(rRegP dst, immP31 src, rFlagsReg cr)
 %{
   match(Set dst src);
--- a/src/os/bsd/vm/os_bsd.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/bsd/vm/os_bsd.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -2340,93 +2340,21 @@
 #endif
 }
 
+void os::print_os_info_brief(outputStream* st) {
+  st->print("Bsd");
+
+  os::Posix::print_uname_info(st);
+}
 
 void os::print_os_info(outputStream* st) {
   st->print("OS:");
-
-  // Try to identify popular distros.
-  // Most Bsd distributions have /etc/XXX-release file, which contains
-  // the OS version string. Some have more than one /etc/XXX-release file
-  // (e.g. Mandrake has both /etc/mandrake-release and /etc/redhat-release.),
-  // so the order is important.
-  if (!_print_ascii_file("/etc/mandrake-release", st) &&
-      !_print_ascii_file("/etc/sun-release", st) &&
-      !_print_ascii_file("/etc/redhat-release", st) &&
-      !_print_ascii_file("/etc/SuSE-release", st) &&
-      !_print_ascii_file("/etc/turbobsd-release", st) &&
-      !_print_ascii_file("/etc/gentoo-release", st) &&
-      !_print_ascii_file("/etc/debian_version", st) &&
-      !_print_ascii_file("/etc/ltib-release", st) &&
-      !_print_ascii_file("/etc/angstrom-version", st)) {
-      st->print("Bsd");
-  }
-  st->cr();
-
-  // kernel
-  st->print("uname:");
-  struct utsname name;
-  uname(&name);
-  st->print(name.sysname); st->print(" ");
-  st->print(name.release); st->print(" ");
-  st->print(name.version); st->print(" ");
-  st->print(name.machine);
-  st->cr();
-
-#ifndef _ALLBSD_SOURCE
-  // Print warning if unsafe chroot environment detected
-  if (unsafe_chroot_detected) {
-    st->print("WARNING!! ");
-    st->print_cr(unstable_chroot_error);
-  }
-
-  // libc, pthread
-  st->print("libc:");
-  st->print(os::Bsd::glibc_version()); st->print(" ");
-  st->print(os::Bsd::libpthread_version()); st->print(" ");
-  if (os::Bsd::is_BsdThreads()) {
-     st->print("(%s stack)", os::Bsd::is_floating_stack() ? "floating" : "fixed");
-  }
-  st->cr();
-#endif
-
-  // rlimit
-  st->print("rlimit:");
-  struct rlimit rlim;
-
-  st->print(" STACK ");
-  getrlimit(RLIMIT_STACK, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", CORE ");
-  getrlimit(RLIMIT_CORE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", NPROC ");
-  getrlimit(RLIMIT_NPROC, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%d", rlim.rlim_cur);
-
-  st->print(", NOFILE ");
-  getrlimit(RLIMIT_NOFILE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%d", rlim.rlim_cur);
-
-#ifndef _ALLBSD_SOURCE
-  st->print(", AS ");
-  getrlimit(RLIMIT_AS, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-  st->cr();
-
-  // load average
-  st->print("load average:");
-  double loadavg[3];
-  os::loadavg(loadavg, 3);
-  st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
-  st->cr();
-#endif
+  st->print("Bsd");
+
+  os::Posix::print_uname_info(st);
+
+  os::Posix::print_rlimit_info(st);
+
+  os::Posix::print_load_average(st);
 }
 
 void os::pd_print_cpu_info(outputStream* st) {
--- a/src/os/linux/vm/os_linux.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/linux/vm/os_linux.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -2054,15 +2054,43 @@
    }
 }
 
+void os::print_os_info_brief(outputStream* st) {
+  os::Linux::print_distro_info(st);
+
+  os::Posix::print_uname_info(st);
+
+  os::Linux::print_libversion_info(st);
+
+}
 
 void os::print_os_info(outputStream* st) {
   st->print("OS:");
 
-  // Try to identify popular distros.
-  // Most Linux distributions have /etc/XXX-release file, which contains
-  // the OS version string. Some have more than one /etc/XXX-release file
-  // (e.g. Mandrake has both /etc/mandrake-release and /etc/redhat-release.),
-  // so the order is important.
+  os::Linux::print_distro_info(st);
+
+  os::Posix::print_uname_info(st);
+
+  // Print warning if unsafe chroot environment detected
+  if (unsafe_chroot_detected) {
+    st->print("WARNING!! ");
+    st->print_cr(unstable_chroot_error);
+  }
+
+  os::Linux::print_libversion_info(st);
+
+  os::Posix::print_rlimit_info(st);
+
+  os::Posix::print_load_average(st);
+
+  os::Linux::print_full_memory_info(st);
+}
+
+// Try to identify popular distros.
+// Most Linux distributions have /etc/XXX-release file, which contains
+// the OS version string. Some have more than one /etc/XXX-release file
+// (e.g. Mandrake has both /etc/mandrake-release and /etc/redhat-release.),
+// so the order is important.
+void os::Linux::print_distro_info(outputStream* st) {
   if (!_print_ascii_file("/etc/mandrake-release", st) &&
       !_print_ascii_file("/etc/sun-release", st) &&
       !_print_ascii_file("/etc/redhat-release", st) &&
@@ -2076,23 +2104,9 @@
       st->print("Linux");
   }
   st->cr();
-
-  // kernel
-  st->print("uname:");
-  struct utsname name;
-  uname(&name);
-  st->print(name.sysname); st->print(" ");
-  st->print(name.release); st->print(" ");
-  st->print(name.version); st->print(" ");
-  st->print(name.machine);
-  st->cr();
-
-  // Print warning if unsafe chroot environment detected
-  if (unsafe_chroot_detected) {
-    st->print("WARNING!! ");
-    st->print_cr(unstable_chroot_error);
-  }
-
+}
+
+void os::Linux::print_libversion_info(outputStream* st) {
   // libc, pthread
   st->print("libc:");
   st->print(os::Linux::glibc_version()); st->print(" ");
@@ -2101,56 +2115,12 @@
      st->print("(%s stack)", os::Linux::is_floating_stack() ? "floating" : "fixed");
   }
   st->cr();
-
-  // rlimit
-  st->print("rlimit:");
-  struct rlimit rlim;
-
-  st->print(" STACK ");
-  getrlimit(RLIMIT_STACK, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", CORE ");
-  getrlimit(RLIMIT_CORE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", NPROC ");
-  getrlimit(RLIMIT_NPROC, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%d", rlim.rlim_cur);
-
-  st->print(", NOFILE ");
-  getrlimit(RLIMIT_NOFILE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%d", rlim.rlim_cur);
-
-  st->print(", AS ");
-  getrlimit(RLIMIT_AS, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-  st->cr();
-
-  // load average
-  st->print("load average:");
-  double loadavg[3];
-  os::loadavg(loadavg, 3);
-  st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
-  st->cr();
-
-  // meminfo
-  st->print("\n/proc/meminfo:\n");
-  _print_ascii_file("/proc/meminfo", st);
-  st->cr();
-}
-
-void os::pd_print_cpu_info(outputStream* st) {
-  st->print("\n/proc/cpuinfo:\n");
-  if (!_print_ascii_file("/proc/cpuinfo", st)) {
-    st->print("  <Not Available>");
-  }
-  st->cr();
+}
+
+void os::Linux::print_full_memory_info(outputStream* st) {
+   st->print("\n/proc/meminfo:\n");
+   _print_ascii_file("/proc/meminfo", st);
+   st->cr();
 }
 
 void os::print_memory_info(outputStream* st) {
@@ -2173,6 +2143,14 @@
   st->cr();
 }
 
+void os::pd_print_cpu_info(outputStream* st) {
+  st->print("\n/proc/cpuinfo:\n");
+  if (!_print_ascii_file("/proc/cpuinfo", st)) {
+    st->print("  <Not Available>");
+  }
+  st->cr();
+}
+
 // Taken from /usr/include/bits/siginfo.h  Supposed to be architecture specific
 // but they're the same for all the linux arch that we support
 // and they're the same for solaris but there's no common place to put this.
--- a/src/os/linux/vm/os_linux.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/linux/vm/os_linux.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -89,6 +89,10 @@
 
   static bool hugetlbfs_sanity_check(bool warn, size_t page_size);
 
+  static void print_full_memory_info(outputStream* st);
+  static void print_distro_info(outputStream* st);
+  static void print_libversion_info(outputStream* st);
+
  public:
   static void init_thread_fpu_state();
   static int  get_fpu_control_word();
--- a/src/os/posix/vm/os_posix.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/posix/vm/os_posix.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -28,6 +28,8 @@
 
 #include <unistd.h>
 #include <sys/resource.h>
+#include <sys/utsname.h>
+
 
 // Check core dump limit and report possible place where core can be found
 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
@@ -72,3 +74,59 @@
   // don't do anything on posix platforms
   return;
 }
+
+void os::Posix::print_load_average(outputStream* st) {
+  st->print("load average:");
+  double loadavg[3];
+  os::loadavg(loadavg, 3);
+  st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
+  st->cr();
+}
+
+void os::Posix::print_rlimit_info(outputStream* st) {
+  st->print("rlimit:");
+  struct rlimit rlim;
+
+  st->print(" STACK ");
+  getrlimit(RLIMIT_STACK, &rlim);
+  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
+  else st->print("%uk", rlim.rlim_cur >> 10);
+
+  st->print(", CORE ");
+  getrlimit(RLIMIT_CORE, &rlim);
+  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
+  else st->print("%uk", rlim.rlim_cur >> 10);
+
+  //Isn't there on solaris
+#ifndef TARGET_OS_FAMILY_solaris
+  st->print(", NPROC ");
+  getrlimit(RLIMIT_NPROC, &rlim);
+  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
+  else st->print("%d", rlim.rlim_cur);
+#endif
+
+  st->print(", NOFILE ");
+  getrlimit(RLIMIT_NOFILE, &rlim);
+  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
+  else st->print("%d", rlim.rlim_cur);
+
+  st->print(", AS ");
+  getrlimit(RLIMIT_AS, &rlim);
+  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
+  else st->print("%uk", rlim.rlim_cur >> 10);
+  st->cr();
+}
+
+void os::Posix::print_uname_info(outputStream* st) {
+  // kernel
+  st->print("uname:");
+  struct utsname name;
+  uname(&name);
+  st->print(name.sysname); st->print(" ");
+  st->print(name.release); st->print(" ");
+  st->print(name.version); st->print(" ");
+  st->print(name.machine);
+  st->cr();
+}
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/posix/vm/os_posix.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 1999, 2010, 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.
+ *
+ */
+
+#ifndef OS_POSIX_VM_OS_POSIX_HPP
+#define OS_POSIX_VM_OS_POSIX_HPP
+class Posix {
+  friend class os;
+
+protected:
+  static void print_distro_info(outputStream* st);
+  static void print_rlimit_info(outputStream* st);
+  static void print_uname_info(outputStream* st);
+  static void print_libversion_info(outputStream* st);
+  static void print_load_average(outputStream* st);
+
+
+};
+
+
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/solaris/add_gnu_debuglink/add_gnu_debuglink.c	Fri Jun 08 17:13:09 2012 +0100
@@ -0,0 +1,285 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ */
+
+/*
+ * Name:        add_gnu_debuglink.c
+ *
+ * Description: Add a ".gnu_debuglink" section that refers to the specified
+ *     debug_info_path to the specified ELF object.
+ *
+ *     This program is adapted from the example program shown on the
+ *     elf(3elf) man page and from code from the Solaris compiler
+ *     driver.
+ */
+
+/*
+ * needed to define SHF_EXCLUDE
+ */
+#define ELF_TARGET_ALL
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <libelf.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void failure(void);
+static unsigned int gnu_debuglink_crc32(unsigned int crc, unsigned char *buf,
+                                        size_t len);
+
+void
+main(int argc, char ** argv) {
+                                 /* new ELF section name */
+    static char SEC_NAME[] = ".gnu_debuglink";
+
+    unsigned char buffer[8 * 1024];  /* I/O buffer */
+    int           buffer_len;        /* buffer length */
+    char *        debug_info_path;   /* debug info path */
+    void *        ehdr;              /* ELF header */
+    Elf *         elf;               /* ELF descriptor */
+    char *        elf_ident;         /* ELF identity string */
+    char *        elf_obj;           /* elf_obj file */
+    int           fd;                /* descriptor for files */
+    unsigned int  file_crc = 0;      /* CRC for debug info file */
+    int           is_elfclass64;     /* is an ELFCLASS64 file? */
+    Elf_Data *    link_dat;          /* ELF data for new debug info link */
+    Elf_Data *    name_dat;          /* ELF data for new section name */
+    Elf_Scn *     new_scn;           /* new ELF section descriptor */
+    void *        new_shdr;          /* new ELF section header */
+    Elf_Scn *     scn;               /* ELF section descriptor */
+    void *        shdr;              /* ELF section header */
+
+    if (argc != 3) {
+        (void) fprintf(stderr, "Usage: %s debug_info_path elf_obj\n", argv[0]);
+        exit(2);
+    }
+
+    debug_info_path = argv[1];  /* save for later */
+    if ((fd = open(debug_info_path, O_RDONLY)) == -1) {
+        (void) fprintf(stderr, "%s: cannot open file.\n", debug_info_path);
+        exit(3);
+    }
+
+    (void) printf("Computing CRC for '%s'\n", debug_info_path);
+    (void) fflush(stdout);
+    /* compute CRC for the debug info file */
+    for (;;) {
+        int len = read(fd, buffer, sizeof buffer);
+        if (len <= 0) {
+            break;
+        }
+        file_crc = gnu_debuglink_crc32(file_crc, buffer, len);
+    }
+    (void) close(fd);
+
+    /* open the elf_obj */
+    elf_obj = argv[2];
+    if ((fd = open(elf_obj, O_RDWR)) == -1) {
+        (void) fprintf(stderr, "%s: cannot open file.\n", elf_obj);
+        exit(4);
+    }
+
+    (void) printf("Opening '%s' for update\n", elf_obj);
+    (void) fflush(stdout);
+    (void) elf_version(EV_CURRENT);  /* coordinate ELF versions */
+
+    /* obtain the ELF descriptors from the input file */
+    if ((elf = elf_begin(fd, ELF_C_RDWR, NULL)) == NULL) {
+        failure();
+    }
+
+    /* determine if ELFCLASS64 or not? */
+    elf_ident = elf_getident(elf, NULL);
+    is_elfclass64 = (elf_ident[EI_CLASS] == ELFCLASS64);
+
+    /* get the ELF header */
+    if (is_elfclass64) {
+        ehdr = elf64_getehdr(elf);
+    } else {
+        ehdr = elf32_getehdr(elf);
+    }
+    if (ehdr == NULL) {
+        failure();
+    }
+
+    /* get the ELF section descriptor */
+    if (is_elfclass64) {
+        scn = elf_getscn(elf, ((Elf64_Ehdr *) ehdr)->e_shstrndx);
+    } else {
+        scn = elf_getscn(elf, ((Elf32_Ehdr *) ehdr)->e_shstrndx);
+    }
+    if (scn == NULL) {
+        failure();
+    }
+
+    /* get the section header */
+    if (is_elfclass64) {
+        shdr = elf64_getshdr(scn);
+    } else {
+        shdr = elf32_getshdr(scn);
+    }
+    if (shdr == NULL) {
+        failure();
+    }
+
+    (void) printf("Adding ELF data for new section name\n");
+    (void) fflush(stdout);
+    name_dat = elf_newdata(scn);
+    name_dat->d_buf = (void *) SEC_NAME;
+    if (is_elfclass64) {
+        name_dat->d_off = ((Elf64_Shdr *) shdr)->sh_size + 1;
+    } else {
+        name_dat->d_off = ((Elf32_Shdr *) shdr)->sh_size + 1;
+    }
+    name_dat->d_align = 1;
+    name_dat->d_size = strlen(SEC_NAME) + 1;
+
+    new_scn = elf_newscn(elf);
+
+    if (is_elfclass64) {
+        new_shdr = elf64_getshdr(new_scn);
+        ((Elf64_Shdr *) new_shdr)->sh_flags = SHF_EXCLUDE;
+        ((Elf64_Shdr *) new_shdr)->sh_type = SHT_PROGBITS;
+        ((Elf64_Shdr *) new_shdr)->sh_name = ((Elf64_Shdr *) shdr)->sh_size;
+        ((Elf64_Shdr *) new_shdr)->sh_addralign = 1;
+        ((Elf64_Shdr *) shdr)->sh_size += (strlen(SEC_NAME) + 1);
+    } else {
+        new_shdr = elf32_getshdr(new_scn);
+        ((Elf32_Shdr *) new_shdr)->sh_flags = SHF_EXCLUDE;
+        ((Elf32_Shdr *) new_shdr)->sh_type = SHT_PROGBITS;
+        ((Elf32_Shdr *) new_shdr)->sh_name = ((Elf32_Shdr *) shdr)->sh_size;
+        ((Elf32_Shdr *) new_shdr)->sh_addralign = 1;
+        ((Elf32_Shdr *) shdr)->sh_size += (strlen(SEC_NAME) + 1);
+    }
+
+    (void) printf("Adding ELF data for debug_info_path value\n");
+    (void) fflush(stdout);
+    (void) memset(buffer, 0, sizeof buffer);
+    buffer_len = strlen(debug_info_path) + 1;  /* +1 for NUL */
+    (void) strncpy((char *) buffer, debug_info_path, buffer_len);
+    if (buffer_len % 4 != 0) {
+        /* not on a 4 byte boundary so pad to the next one */
+        buffer_len += (4 - buffer_len % 4);
+    }
+    /* save the CRC */
+    (void) memcpy(&buffer[buffer_len], &file_crc, sizeof file_crc);
+    buffer_len += sizeof file_crc;
+
+    link_dat = elf_newdata(new_scn);
+    link_dat->d_type = ELF_T_BYTE;
+    link_dat->d_size = buffer_len;
+    link_dat->d_buf = buffer;
+    link_dat->d_align = 1;
+
+    (void) printf("Saving updates to '%s'\n", elf_obj);
+    (void) fflush(stdout);
+    (void) elf_update(elf, ELF_C_NULL);   /* recalc ELF memory structures */
+    (void) elf_update(elf, ELF_C_WRITE);  /* write out changes to ELF obj */
+    (void) elf_end(elf);                  /* done with ELF obj */
+    (void) close(fd);
+
+    (void) printf("Done updating '%s'\n", elf_obj);
+    (void) fflush(stdout);
+    exit(0);
+}  /* end main */
+
+
+static void
+failure() {
+    (void) fprintf(stderr, "%s\n", elf_errmsg(elf_errno()));
+    exit(5);
+}
+
+
+/*
+ * The CRC used in gnu_debuglink, retrieved from
+ * http://sourceware.org/gdb/current/onlinedocs/gdb/Separate-Debug-Files.html#Separate-Debug-Files.
+ */
+
+static unsigned int
+gnu_debuglink_crc32(unsigned int crc, unsigned char *buf, size_t len) {
+    static const unsigned int crc32_table[256] = {
+        0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+        0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+        0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+        0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+        0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+        0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+        0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+        0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+        0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+        0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+        0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+        0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+        0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+        0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+        0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+        0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+        0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+        0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+        0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+        0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+        0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+        0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+        0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+        0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+        0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+        0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+        0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+        0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+        0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+        0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+        0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+        0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+        0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+        0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+        0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+        0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+        0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+        0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+        0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+        0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+        0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+        0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+        0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+        0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+        0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+        0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+        0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+        0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+        0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+        0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+        0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+        0x2d02ef8d
+    };
+
+    unsigned char *end;
+
+    crc = ~crc & 0xffffffff;
+    for (end = buf + len; buf < end; ++buf) {
+        crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
+    }
+    return ~crc & 0xffffffff;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/solaris/fix_empty_sec_hdr_flags/fix_empty_sec_hdr_flags.c	Fri Jun 08 17:13:09 2012 +0100
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ */
+
+/*
+ * Name:        fix_empty_sec_hdr_flags.c
+ *
+ * Description: Remove the SHF_ALLOC flag from "empty" section headers.
+ *     An "empty" section header has sh_addr == 0 and sh_size == 0.
+ *
+ *     This program is adapted from the example program shown on the
+ *     elf(3elf) man page and from code from the Solaris compiler
+ *     driver.
+ */
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <libelf.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static void failure(void);
+
+void
+main(int argc, char ** argv) {
+    void *        ehdr;           /* ELF header */
+    unsigned int  i;              /* section counter */
+    int           fd;             /* descriptor for file */
+    Elf *         elf;            /* ELF descriptor */
+    char *        elf_ident;      /* ELF identity string */
+    char *        elf_obj;        /* elf_obj file */
+    int           fix_count;      /* number of flags fixed */
+    int           is_elfclass64;  /* is an ELFCLASS64 file? */
+    Elf_Scn *     scn;            /* ELF section descriptor */
+    void *        shdr;           /* ELF section header */
+    Elf_Data *    shstrtab;       /* ELF section header string table */
+
+    if (argc != 2) {
+        (void) fprintf(stderr, "Usage: %s elf_obj\n", argv[0]);
+        exit(2);
+    }
+
+    /* open the elf_obj */
+    elf_obj = argv[1];
+    if ((fd = open(elf_obj, O_RDWR)) == -1) {
+        (void) fprintf(stderr, "%s: cannot open file.\n", elf_obj);
+        exit(3);
+    }
+
+    (void) printf("Opening '%s' for update\n", elf_obj);
+    (void) fflush(stdout);
+    (void) elf_version(EV_CURRENT);  /* coordinate ELF versions */
+
+    /* obtain the ELF descriptors from the input file */
+    if ((elf = elf_begin(fd, ELF_C_RDWR, NULL)) == NULL) {
+        failure();
+    }
+
+    /* determine if ELFCLASS64 or not? */
+    elf_ident = elf_getident(elf, NULL);
+    is_elfclass64 = (elf_ident[EI_CLASS] == ELFCLASS64);
+
+    /* get the ELF header */
+    if (is_elfclass64) {
+        ehdr = elf64_getehdr(elf);
+    } else {
+        ehdr = elf32_getehdr(elf);
+    }
+    if (ehdr == NULL) {
+        failure();
+    }
+
+    /* get the ELF section descriptor */
+    if (is_elfclass64) {
+        scn = elf_getscn(elf, ((Elf64_Ehdr *) ehdr)->e_shstrndx);
+    } else {
+        scn = elf_getscn(elf, ((Elf32_Ehdr *) ehdr)->e_shstrndx);
+    }
+    if (scn == NULL) {
+        failure();
+    }
+
+    /* get the section header string table */
+    shstrtab = elf_getdata(scn, NULL);
+    if (shstrtab == NULL) {
+        failure();
+    }
+
+    fix_count = 0;
+
+    /* traverse the sections of the input file */
+    for (i = 1, scn = NULL; scn = elf_nextscn(elf, scn); i++) {
+        int    has_flag_set;  /* is SHF_ALLOC flag set? */
+        int    is_empty;      /* is section empty? */
+        char * name;          /* short hand pointer */
+
+        /* get the section header */
+        if (is_elfclass64) {
+            shdr = elf64_getshdr(scn);
+        } else {
+            shdr = elf32_getshdr(scn);
+        }
+        if (shdr == NULL) {
+            failure();
+        }
+
+        if (is_elfclass64) {
+            name = (char *)shstrtab->d_buf + ((Elf64_Shdr *) shdr)->sh_name;
+        } else {
+            name = (char *)shstrtab->d_buf + ((Elf32_Shdr *) shdr)->sh_name;
+        }
+
+        if (is_elfclass64) {
+            has_flag_set = ((Elf64_Shdr *) shdr)->sh_flags & SHF_ALLOC;
+            is_empty = ((Elf64_Shdr *) shdr)->sh_addr == 0 &&
+                ((Elf64_Shdr *) shdr)->sh_size == 0;
+        } else {
+            has_flag_set = ((Elf32_Shdr *) shdr)->sh_flags & SHF_ALLOC;
+            is_empty = ((Elf32_Shdr *) shdr)->sh_addr == 0 &&
+                ((Elf32_Shdr *) shdr)->sh_size == 0;
+        }
+
+        if (is_empty && has_flag_set) {
+            (void) printf("section[%u] '%s' is empty, "
+                "but SHF_ALLOC flag is set.\n", i, name);
+            (void) printf("Clearing the SHF_ALLOC flag.\n");
+
+            if (is_elfclass64) {
+                ((Elf64_Shdr *) shdr)->sh_flags &= ~SHF_ALLOC;
+            } else {
+                ((Elf32_Shdr *) shdr)->sh_flags &= ~SHF_ALLOC;
+            }
+            fix_count++;
+        }
+    }  /* end for each ELF section */
+
+    if (fix_count > 0) {
+        (void) printf("Saving %d updates to '%s'\n", fix_count, elf_obj);
+        (void) fflush(stdout);
+        (void) elf_update(elf, ELF_C_NULL);   /* recalc ELF memory structures */
+        (void) elf_update(elf, ELF_C_WRITE);  /* write out changes to ELF obj */
+    } else {
+        (void) printf("No SHF_ALLOC flags needed to be cleared.\n");
+    }
+
+    (void) elf_end(elf);                  /* done with ELF obj */
+    (void) close(fd);
+
+    (void) printf("Done %s '%s'\n",
+               (fix_count > 0) ? "updating" : "with", elf_obj);
+    (void) fflush(stdout);
+    exit(0);
+}  /* end main */
+
+
+static void
+failure() {
+    (void) fprintf(stderr, "%s\n", elf_errmsg(elf_errno()));
+    exit(6);
+}
--- a/src/os/solaris/vm/os_solaris.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/solaris/vm/os_solaris.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -2251,61 +2251,44 @@
   return true;
 }
 
+void os::print_os_info_brief(outputStream* st) {
+  os::Solaris::print_distro_info(st);
+
+  os::Posix::print_uname_info(st);
+
+  os::Solaris::print_libversion_info(st);
+}
+
 void os::print_os_info(outputStream* st) {
   st->print("OS:");
 
+  os::Solaris::print_distro_info(st);
+
+  os::Posix::print_uname_info(st);
+
+  os::Solaris::print_libversion_info(st);
+
+  os::Posix::print_rlimit_info(st);
+
+  os::Posix::print_load_average(st);
+}
+
+void os::Solaris::print_distro_info(outputStream* st) {
   if (!_print_ascii_file("/etc/release", st)) {
-    st->print("Solaris");
+      st->print("Solaris");
+    }
+    st->cr();
+}
+
+void os::Solaris::print_libversion_info(outputStream* st) {
+  if (os::Solaris::T2_libthread()) {
+    st->print("  (T2 libthread)");
+  }
+  else {
+    st->print("  (T1 libthread)");
   }
   st->cr();
-
-  // kernel
-  st->print("uname:");
-  struct utsname name;
-  uname(&name);
-  st->print(name.sysname); st->print(" ");
-  st->print(name.release); st->print(" ");
-  st->print(name.version); st->print(" ");
-  st->print(name.machine);
-
-  // libthread
-  if (os::Solaris::T2_libthread()) st->print("  (T2 libthread)");
-  else st->print("  (T1 libthread)");
-  st->cr();
-
-  // rlimit
-  st->print("rlimit:");
-  struct rlimit rlim;
-
-  st->print(" STACK ");
-  getrlimit(RLIMIT_STACK, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", CORE ");
-  getrlimit(RLIMIT_CORE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-
-  st->print(", NOFILE ");
-  getrlimit(RLIMIT_NOFILE, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%d", rlim.rlim_cur);
-
-  st->print(", AS ");
-  getrlimit(RLIMIT_AS, &rlim);
-  if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
-  else st->print("%uk", rlim.rlim_cur >> 10);
-  st->cr();
-
-  // load average
-  st->print("load average:");
-  double loadavg[3];
-  os::loadavg(loadavg, 3);
-  st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
-  st->cr();
-}
-
+}
 
 static bool check_addr0(outputStream* st) {
   jboolean status = false;
--- a/src/os/solaris/vm/os_solaris.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/solaris/vm/os_solaris.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -180,6 +180,9 @@
   // proc_t structure (note that this is a system struct).
   static address _main_stack_base;
 
+  static void print_distro_info(outputStream* st);
+  static void print_libversion_info(outputStream* st);
+
  public:
   static void libthread_init();
   static void synchronization_init();
--- a/src/os/windows/vm/os_windows.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/windows/vm/os_windows.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1572,9 +1572,17 @@
    enumerate_modules(pid, _print_module, (void *)st);
 }
 
+void os::print_os_info_brief(outputStream* st) {
+  os::print_os_info(st);
+}
+
 void os::print_os_info(outputStream* st) {
   st->print("OS:");
 
+  os::win32::print_windows_version(st);
+}
+
+void os::win32::print_windows_version(outputStream* st) {
   OSVERSIONINFOEX osvi;
   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
--- a/src/os/windows/vm/os_windows.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os/windows/vm/os_windows.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -27,6 +27,7 @@
 // Win32_OS defines the interface to windows operating systems
 
 class win32 {
+  friend class os;
 
  protected:
   static int    _vm_page_size;
@@ -39,6 +40,8 @@
   static bool   _is_windows_2003;
   static bool   _is_windows_server;
 
+  static void print_windows_version(outputStream* st);
+
  public:
   // Windows-specific interface:
   static void   initialize_system_info();
--- a/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -522,11 +522,12 @@
 
       if ((sig == SIGSEGV || sig == SIGBUS) && os::is_poll_address((address)info->si_addr)) {
         stub = SharedRuntime::get_poll_stub(pc);
-#if defined(__APPLE__) && !defined(AMD64)
+#if defined(__APPLE__)
       // 32-bit Darwin reports a SIGBUS for nearly all memory access exceptions.
+      // 64-bit Darwin may also use a SIGBUS (seen with compressed oops).
       // Catching SIGBUS here prevents the implicit SIGBUS NULL check below from
       // being called, so only do so if the implicit NULL check is not necessary.
-      } else if (sig == SIGBUS && MacroAssembler::needs_explicit_null_check((int)info->si_addr)) {
+      } else if (sig == SIGBUS && MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) {
 #else
       } else if (sig == SIGBUS /* && info->si_code == BUS_OBJERR */) {
 #endif
--- a/src/share/vm/classfile/javaClasses.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/classfile/javaClasses.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -143,7 +143,27 @@
 }
 
 
+int java_lang_String::value_offset  = 0;
+int java_lang_String::offset_offset = 0;
+int java_lang_String::count_offset  = 0;
+int java_lang_String::hash_offset   = 0;
+
+bool java_lang_String::initialized  = false;
+
+void java_lang_String::compute_offsets() {
+  assert(!initialized, "offsets should be initialized only once");
+
+  klassOop k = SystemDictionary::String_klass();
+  compute_offset(value_offset,           k, vmSymbols::value_name(),  vmSymbols::char_array_signature());
+  compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
+  compute_optional_offset(count_offset,  k, vmSymbols::count_name(),  vmSymbols::int_signature());
+  compute_optional_offset(hash_offset,   k, vmSymbols::hash_name(),   vmSymbols::int_signature());
+
+  initialized = true;
+}
+
 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
+  assert(initialized, "Must be initialized");
   // Create the String object first, so there's a chance that the String
   // and the char array it points to end up in the same cache line.
   oop obj;
@@ -2837,10 +2857,6 @@
 
 
 
-int java_lang_String::value_offset;
-int java_lang_String::offset_offset;
-int java_lang_String::count_offset;
-int java_lang_String::hash_offset;
 int java_lang_Class::_klass_offset;
 int java_lang_Class::_array_klass_offset;
 int java_lang_Class::_resolved_constructor_offset;
@@ -3000,12 +3016,6 @@
   const int x = heapOopSize;
   const int header = instanceOopDesc::base_offset_in_bytes();
 
-  // Do the String Class
-  java_lang_String::value_offset  = java_lang_String::hc_value_offset  * x + header;
-  java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header;
-  java_lang_String::count_offset  = java_lang_String::offset_offset + sizeof (jint);
-  java_lang_String::hash_offset   = java_lang_String::count_offset + sizeof (jint);
-
   // Throwable Class
   java_lang_Throwable::backtrace_offset  = java_lang_Throwable::hc_backtrace_offset  * x + header;
   java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
@@ -3200,9 +3210,13 @@
   // java.lang.String
 
   CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
-  CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
-  CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
-  CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
+  if (java_lang_String::has_offset_field()) {
+    CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
+    CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
+  }
+  if (java_lang_String::has_hash_field()) {
+    CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
+  }
 
   // java.lang.Class
 
--- a/src/share/vm/classfile/javaClasses.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/classfile/javaClasses.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -52,26 +52,36 @@
 
 class java_lang_String : AllStatic {
  private:
-  enum {
-    hc_value_offset  = 0,
-    hc_offset_offset = 1
-    //hc_count_offset = 2  -- not a word-scaled offset
-    //hc_hash_offset  = 3  -- not a word-scaled offset
-  };
-
   static int value_offset;
   static int offset_offset;
   static int count_offset;
   static int hash_offset;
 
+  static bool initialized;
+
   static Handle basic_create(int length, bool tenured, TRAPS);
   static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS);
 
-  static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset,  (oop)buffer); }
-  static void set_offset(oop string, int offset)          { string->int_field_put(offset_offset, offset); }
-  static void set_count( oop string, int count)           { string->int_field_put(count_offset,  count);  }
+  static void set_value( oop string, typeArrayOop buffer) {
+    assert(initialized, "Must be initialized");
+    string->obj_field_put(value_offset,  (oop)buffer);
+  }
+  static void set_offset(oop string, int offset) {
+    assert(initialized, "Must be initialized");
+    if (offset_offset > 0) {
+      string->int_field_put(offset_offset, offset);
+    }
+  }
+  static void set_count( oop string, int count) {
+    assert(initialized, "Must be initialized");
+    if (count_offset > 0) {
+      string->int_field_put(count_offset,  count);
+    }
+  }
 
  public:
+  static void compute_offsets();
+
   // Instance creation
   static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
   static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS);
@@ -82,23 +92,61 @@
   static Handle create_from_platform_dependent_str(const char* str, TRAPS);
   static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
 
-  static int value_offset_in_bytes()  { return value_offset;  }
-  static int count_offset_in_bytes()  { return count_offset;  }
-  static int offset_offset_in_bytes() { return offset_offset; }
-  static int hash_offset_in_bytes()   { return hash_offset;   }
+  static bool has_offset_field()  {
+    assert(initialized, "Must be initialized");
+    return (offset_offset > 0);
+  }
+
+  static bool has_count_field()  {
+    assert(initialized, "Must be initialized");
+    return (count_offset > 0);
+  }
+
+  static bool has_hash_field()  {
+    assert(initialized, "Must be initialized");
+    return (hash_offset > 0);
+  }
+
+  static int value_offset_in_bytes()  {
+    assert(initialized && (value_offset > 0), "Must be initialized");
+    return value_offset;
+  }
+  static int count_offset_in_bytes()  {
+    assert(initialized && (count_offset > 0), "Must be initialized");
+    return count_offset;
+  }
+  static int offset_offset_in_bytes() {
+    assert(initialized && (offset_offset > 0), "Must be initialized");
+    return offset_offset;
+  }
+  static int hash_offset_in_bytes()   {
+    assert(initialized && (hash_offset > 0), "Must be initialized");
+    return hash_offset;
+  }
 
   // Accessors
   static typeArrayOop value(oop java_string) {
+    assert(initialized && (value_offset > 0), "Must be initialized");
     assert(is_instance(java_string), "must be java_string");
     return (typeArrayOop) java_string->obj_field(value_offset);
   }
   static int offset(oop java_string) {
+    assert(initialized, "Must be initialized");
     assert(is_instance(java_string), "must be java_string");
-    return java_string->int_field(offset_offset);
+    if (offset_offset > 0) {
+      return java_string->int_field(offset_offset);
+    } else {
+      return 0;
+    }
   }
   static int length(oop java_string) {
+    assert(initialized, "Must be initialized");
     assert(is_instance(java_string), "must be java_string");
-    return java_string->int_field(count_offset);
+    if (count_offset > 0) {
+      return java_string->int_field(count_offset);
+    } else {
+      return ((typeArrayOop)java_string->obj_field(value_offset))->length();
+    }
   }
   static int utf8_length(oop java_string);
 
--- a/src/share/vm/classfile/systemDictionary.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/classfile/systemDictionary.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1971,6 +1971,9 @@
   // first do Object, String, Class
   initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
 
+  // Calculate offsets for String and Class classes since they are loaded and
+  // can be used after this point.
+  java_lang_String::compute_offsets();
   java_lang_Class::compute_offsets();
 
   // Fixup mirrors for classes loaded before java.lang.Class.
--- a/src/share/vm/classfile/vmSymbols.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/classfile/vmSymbols.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -339,6 +339,9 @@
   template(park_event_name,                           "nativeParkEventPointer")                   \
   template(cache_field_name,                          "cache")                                    \
   template(value_name,                                "value")                                    \
+  template(offset_name,                               "offset")                                   \
+  template(count_name,                                "count")                                    \
+  template(hash_name,                                 "hash")                                     \
   template(frontCacheEnabled_name,                    "frontCacheEnabled")                        \
   template(stringCacheEnabled_name,                   "stringCacheEnabled")                       \
   template(numberOfLeadingZeros_name,                 "numberOfLeadingZeros")                     \
--- a/src/share/vm/gc_implementation/shared/gcUtil.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/gc_implementation/shared/gcUtil.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -31,9 +31,15 @@
                                                         float average) {
   // We smooth the samples by not using weight() directly until we've
   // had enough data to make it meaningful. We'd like the first weight
-  // used to be 1, the second to be 1/2, etc until we have 100/weight
-  // samples.
-  unsigned count_weight = 100/count();
+  // used to be 1, the second to be 1/2, etc until we have
+  // OLD_THRESHOLD/weight samples.
+  unsigned count_weight = 0;
+
+  // Avoid division by zero if the counter wraps (7158457)
+  if (!is_old()) {
+    count_weight = OLD_THRESHOLD/count();
+  }
+
   unsigned adaptive_weight = (MAX2(weight(), count_weight));
 
   float new_avg = exp_avg(average, new_sample, adaptive_weight);
@@ -43,8 +49,6 @@
 
 void AdaptiveWeightedAverage::sample(float new_sample) {
   increment_count();
-  assert(count() != 0,
-         "Wraparound -- history would be incorrectly discarded");
 
   // Compute the new weighted average
   float new_avg = compute_adaptive_average(new_sample, average());
--- a/src/share/vm/gc_implementation/shared/gcUtil.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/gc_implementation/shared/gcUtil.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -50,11 +50,20 @@
   unsigned         _weight;         // The weight used to smooth the averages
                                     //   A higher weight favors the most
                                     //   recent data.
+  bool             _is_old;         // Has enough historical data
+
+  const static unsigned OLD_THRESHOLD = 100;
 
  protected:
   float            _last_sample;    // The last value sampled.
 
-  void  increment_count()       { _sample_count++;       }
+  void  increment_count() {
+    _sample_count++;
+    if (!_is_old && _sample_count > OLD_THRESHOLD) {
+      _is_old = true;
+    }
+  }
+
   void  set_average(float avg)  { _average = avg;        }
 
   // Helper function, computes an adaptive weighted average
@@ -64,13 +73,15 @@
  public:
   // Input weight must be between 0 and 100
   AdaptiveWeightedAverage(unsigned weight, float avg = 0.0) :
-    _average(avg), _sample_count(0), _weight(weight), _last_sample(0.0) {
+    _average(avg), _sample_count(0), _weight(weight), _last_sample(0.0),
+    _is_old(false) {
   }
 
   void clear() {
     _average = 0;
     _sample_count = 0;
     _last_sample = 0;
+    _is_old = false;
   }
 
   // Useful for modifying static structures after startup.
@@ -84,7 +95,8 @@
   float    average() const       { return _average;       }
   unsigned weight()  const       { return _weight;        }
   unsigned count()   const       { return _sample_count;  }
-  float    last_sample() const   { return _last_sample; }
+  float    last_sample() const   { return _last_sample;   }
+  bool     is_old()  const       { return _is_old;        }
 
   // Update data with a new sample.
   void sample(float new_sample);
--- a/src/share/vm/memory/barrierSet.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/memory/barrierSet.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -181,6 +181,8 @@
   // within the heap, this function tells whether they are met.
   virtual bool is_aligned(HeapWord* addr) = 0;
 
+  // Print a description of the memory for the barrier set
+  virtual void print_on(outputStream* st) const = 0;
 };
 
 #endif // SHARE_VM_MEMORY_BARRIERSET_HPP
--- a/src/share/vm/memory/cardTableModRefBS.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/memory/cardTableModRefBS.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -711,6 +711,11 @@
 }
 #endif
 
+void CardTableModRefBS::print_on(outputStream* st) const {
+  st->print_cr("Card table byte_map: [" INTPTR_FORMAT "," INTPTR_FORMAT "] byte_map_base: " INTPTR_FORMAT,
+               _byte_map, _byte_map + _byte_map_size, byte_map_base);
+}
+
 bool CardTableModRefBSForCTRS::card_will_be_scanned(jbyte cv) {
   return
     CardTableModRefBS::card_will_be_scanned(cv) ||
--- a/src/share/vm/memory/cardTableModRefBS.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/memory/cardTableModRefBS.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -469,6 +469,9 @@
     return _byte_map + card_index;
   }
 
+  // Print a description of the memory for the barrier set
+  virtual void print_on(outputStream* st) const;
+
   void verify();
   void verify_guard();
 
--- a/src/share/vm/memory/dump.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/memory/dump.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -78,8 +78,8 @@
   void do_oop(oop* p) {
     if (p != NULL) {
       oop obj = *p;
-      if (obj->klass() == SystemDictionary::String_klass()) {
-
+      if (obj->klass() == SystemDictionary::String_klass() &&
+          java_lang_String::has_hash_field()) {
         int hash = java_lang_String::hash_string(obj);
         obj->int_field_put(hash_offset, hash);
       }
--- a/src/share/vm/opto/graphKit.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/opto/graphKit.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -3748,3 +3748,81 @@
   final_sync(ideal);
 }
 #undef __
+
+
+
+Node* GraphKit::load_String_offset(Node* ctrl, Node* str) {
+  if (java_lang_String::has_offset_field()) {
+    int offset_offset = java_lang_String::offset_offset_in_bytes();
+    const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                       false, NULL, 0);
+    const TypePtr* offset_field_type = string_type->add_offset(offset_offset);
+    int offset_field_idx = C->get_alias_index(offset_field_type);
+    return make_load(ctrl,
+                     basic_plus_adr(str, str, offset_offset),
+                     TypeInt::INT, T_INT, offset_field_idx);
+  } else {
+    return intcon(0);
+  }
+}
+
+Node* GraphKit::load_String_length(Node* ctrl, Node* str) {
+  if (java_lang_String::has_count_field()) {
+    int count_offset = java_lang_String::count_offset_in_bytes();
+    const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                       false, NULL, 0);
+    const TypePtr* count_field_type = string_type->add_offset(count_offset);
+    int count_field_idx = C->get_alias_index(count_field_type);
+    return make_load(ctrl,
+                     basic_plus_adr(str, str, count_offset),
+                     TypeInt::INT, T_INT, count_field_idx);
+  } else {
+    return load_array_length(load_String_value(ctrl, str));
+  }
+}
+
+Node* GraphKit::load_String_value(Node* ctrl, Node* str) {
+  int value_offset = java_lang_String::value_offset_in_bytes();
+  const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                     false, NULL, 0);
+  const TypePtr* value_field_type = string_type->add_offset(value_offset);
+  const TypeAryPtr*  value_type = TypeAryPtr::make(TypePtr::NotNull,
+                                                   TypeAry::make(TypeInt::CHAR,TypeInt::POS),
+                                                   ciTypeArrayKlass::make(T_CHAR), true, 0);
+  int value_field_idx = C->get_alias_index(value_field_type);
+  return make_load(ctrl, basic_plus_adr(str, str, value_offset),
+                   value_type, T_OBJECT, value_field_idx);
+}
+
+void GraphKit::store_String_offset(Node* ctrl, Node* str, Node* value) {
+  int offset_offset = java_lang_String::offset_offset_in_bytes();
+  const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                     false, NULL, 0);
+  const TypePtr* offset_field_type = string_type->add_offset(offset_offset);
+  int offset_field_idx = C->get_alias_index(offset_field_type);
+  store_to_memory(ctrl, basic_plus_adr(str, offset_offset),
+                  value, T_INT, offset_field_idx);
+}
+
+void GraphKit::store_String_value(Node* ctrl, Node* str, Node* value) {
+  int value_offset = java_lang_String::value_offset_in_bytes();
+  const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                     false, NULL, 0);
+  const TypePtr* value_field_type = string_type->add_offset(value_offset);
+  const TypeAryPtr*  value_type = TypeAryPtr::make(TypePtr::NotNull,
+                                                   TypeAry::make(TypeInt::CHAR,TypeInt::POS),
+                                                   ciTypeArrayKlass::make(T_CHAR), true, 0);
+  int value_field_idx = C->get_alias_index(value_field_type);
+  store_to_memory(ctrl, basic_plus_adr(str, value_offset),
+                  value, T_OBJECT, value_field_idx);
+}
+
+void GraphKit::store_String_length(Node* ctrl, Node* str, Node* value) {
+  int count_offset = java_lang_String::count_offset_in_bytes();
+  const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
+                                                     false, NULL, 0);
+  const TypePtr* count_field_type = string_type->add_offset(count_offset);
+  int count_field_idx = C->get_alias_index(count_field_type);
+  store_to_memory(ctrl, basic_plus_adr(str, count_offset),
+                  value, T_INT, count_field_idx);
+}
--- a/src/share/vm/opto/graphKit.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/opto/graphKit.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2012, 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
@@ -781,6 +781,14 @@
   Node* new_array(Node* klass_node, Node* count_val, int nargs,
                   Node* *return_size_val = NULL);
 
+  // java.lang.String helpers
+  Node* load_String_offset(Node* ctrl, Node* str);
+  Node* load_String_length(Node* ctrl, Node* str);
+  Node* load_String_value(Node* ctrl, Node* str);
+  void store_String_offset(Node* ctrl, Node* str, Node* value);
+  void store_String_length(Node* ctrl, Node* str, Node* value);
+  void store_String_value(Node* ctrl, Node* str, Node* value);
+
   // Handy for making control flow
   IfNode* create_and_map_if(Node* ctrl, Node* tst, float prob, float cnt) {
     IfNode* iff = new (C, 2) IfNode(ctrl, tst, prob, cnt);// New IfNode's
--- a/src/share/vm/opto/library_call.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/opto/library_call.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -147,7 +147,8 @@
     return generate_method_call(method_id, true, false);
   }
 
-  Node* make_string_method_node(int opcode, Node* str1, Node* cnt1, Node* str2, Node* cnt2);
+  Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2);
+  Node* make_string_method_node(int opcode, Node* str1, Node* str2);
   bool inline_string_compareTo();
   bool inline_string_indexOf();
   Node* string_indexOf(Node* string_object, ciTypeArray* target_array, jint offset, jint cache_i, jint md2_i);
@@ -844,48 +845,76 @@
 
 
 //------------------------------make_string_method_node------------------------
-// Helper method for String intrinsic finctions.
-Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* cnt1, Node* str2, Node* cnt2) {
-  const int value_offset  = java_lang_String::value_offset_in_bytes();
-  const int count_offset  = java_lang_String::count_offset_in_bytes();
-  const int offset_offset = java_lang_String::offset_offset_in_bytes();
-
+// Helper method for String intrinsic functions. This version is called
+// with str1 and str2 pointing to String object nodes.
+//
+Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) {
   Node* no_ctrl = NULL;
 
-  ciInstanceKlass* klass = env()->String_klass();
-  const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass);
-
-  const TypeAryPtr* value_type =
-        TypeAryPtr::make(TypePtr::NotNull,
-                         TypeAry::make(TypeInt::CHAR,TypeInt::POS),
-                         ciTypeArrayKlass::make(T_CHAR), true, 0);
-
-  // Get start addr of string and substring
-  Node* str1_valuea  = basic_plus_adr(str1, str1, value_offset);
-  Node* str1_value   = make_load(no_ctrl, str1_valuea, value_type, T_OBJECT, string_type->add_offset(value_offset));
-  Node* str1_offseta = basic_plus_adr(str1, str1, offset_offset);
-  Node* str1_offset  = make_load(no_ctrl, str1_offseta, TypeInt::INT, T_INT, string_type->add_offset(offset_offset));
+  // Get start addr of string
+  Node* str1_value   = load_String_value(no_ctrl, str1);
+  Node* str1_offset  = load_String_offset(no_ctrl, str1);
   Node* str1_start   = array_element_address(str1_value, str1_offset, T_CHAR);
 
-  Node* str2_valuea  = basic_plus_adr(str2, str2, value_offset);
-  Node* str2_value   = make_load(no_ctrl, str2_valuea, value_type, T_OBJECT, string_type->add_offset(value_offset));
-  Node* str2_offseta = basic_plus_adr(str2, str2, offset_offset);
-  Node* str2_offset  = make_load(no_ctrl, str2_offseta, TypeInt::INT, T_INT, string_type->add_offset(offset_offset));
+  // Get length of string 1
+  Node* str1_len  = load_String_length(no_ctrl, str1);
+
+  Node* str2_value   = load_String_value(no_ctrl, str2);
+  Node* str2_offset  = load_String_offset(no_ctrl, str2);
   Node* str2_start   = array_element_address(str2_value, str2_offset, T_CHAR);
 
+  Node* str2_len = NULL;
+  Node* result = NULL;
+
+  switch (opcode) {
+  case Op_StrIndexOf:
+    // Get length of string 2
+    str2_len = load_String_length(no_ctrl, str2);
+
+    result = new (C, 6) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS),
+                                 str1_start, str1_len, str2_start, str2_len);
+    break;
+  case Op_StrComp:
+    // Get length of string 2
+    str2_len = load_String_length(no_ctrl, str2);
+
+    result = new (C, 6) StrCompNode(control(), memory(TypeAryPtr::CHARS),
+                                 str1_start, str1_len, str2_start, str2_len);
+    break;
+  case Op_StrEquals:
+    result = new (C, 5) StrEqualsNode(control(), memory(TypeAryPtr::CHARS),
+                               str1_start, str2_start, str1_len);
+    break;
+  default:
+    ShouldNotReachHere();
+    return NULL;
+  }
+
+  // All these intrinsics have checks.
+  C->set_has_split_ifs(true); // Has chance for split-if optimization
+
+  return _gvn.transform(result);
+}
+
+// Helper method for String intrinsic functions. This version is called
+// with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing
+// to Int nodes containing the lenghts of str1 and str2.
+//
+Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) {
+
   Node* result = NULL;
   switch (opcode) {
   case Op_StrIndexOf:
     result = new (C, 6) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS),
-                                       str1_start, cnt1, str2_start, cnt2);
+                                 str1_start, cnt1, str2_start, cnt2);
     break;
   case Op_StrComp:
     result = new (C, 6) StrCompNode(control(), memory(TypeAryPtr::CHARS),
-                                    str1_start, cnt1, str2_start, cnt2);
+                                 str1_start, cnt1, str2_start, cnt2);
     break;
   case Op_StrEquals:
     result = new (C, 5) StrEqualsNode(control(), memory(TypeAryPtr::CHARS),
-                                      str1_start, str2_start, cnt1);
+                                 str1_start, str2_start, cnt1);
     break;
   default:
     ShouldNotReachHere();
@@ -903,10 +932,6 @@
 
   if (!Matcher::has_match_rule(Op_StrComp)) return false;
 
-  const int value_offset = java_lang_String::value_offset_in_bytes();
-  const int count_offset = java_lang_String::count_offset_in_bytes();
-  const int offset_offset = java_lang_String::offset_offset_in_bytes();
-
   _sp += 2;
   Node *argument = pop();  // pop non-receiver first:  it was pushed second
   Node *receiver = pop();
@@ -923,18 +948,7 @@
     return true;
   }
 
-  ciInstanceKlass* klass = env()->String_klass();
-  const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass);
-  Node* no_ctrl = NULL;
-
-  // Get counts for string and argument
-  Node* receiver_cnta = basic_plus_adr(receiver, receiver, count_offset);
-  Node* receiver_cnt  = make_load(no_ctrl, receiver_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
-
-  Node* argument_cnta = basic_plus_adr(argument, argument, count_offset);
-  Node* argument_cnt  = make_load(no_ctrl, argument_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
-
-  Node* compare = make_string_method_node(Op_StrComp, receiver, receiver_cnt, argument, argument_cnt);
+  Node* compare = make_string_method_node(Op_StrComp, receiver, argument);
   push(compare);
   return true;
 }
@@ -944,10 +958,6 @@
 
   if (!Matcher::has_match_rule(Op_StrEquals)) return false;
 
-  const int value_offset = java_lang_String::value_offset_in_bytes();
-  const int count_offset = java_lang_String::count_offset_in_bytes();
-  const int offset_offset = java_lang_String::offset_offset_in_bytes();
-
   int nargs = 2;
   _sp += nargs;
   Node* argument = pop();  // pop non-receiver first:  it was pushed second
@@ -1001,24 +1011,31 @@
     }
   }
 
-  const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass);
-
-  Node* no_ctrl = NULL;
-  Node* receiver_cnt;
-  Node* argument_cnt;
-
   if (!stopped()) {
+    const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass);
+
     // Properly cast the argument to String
     argument = _gvn.transform(new (C, 2) CheckCastPPNode(control(), argument, string_type));
     // This path is taken only when argument's type is String:NotNull.
     argument = cast_not_null(argument, false);
 
-    // Get counts for string and argument
-    Node* receiver_cnta = basic_plus_adr(receiver, receiver, count_offset);
-    receiver_cnt  = make_load(no_ctrl, receiver_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
-
-    Node* argument_cnta = basic_plus_adr(argument, argument, count_offset);
-    argument_cnt  = make_load(no_ctrl, argument_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
+    Node* no_ctrl = NULL;
+
+    // Get start addr of receiver
+    Node* receiver_val    = load_String_value(no_ctrl, receiver);
+    Node* receiver_offset = load_String_offset(no_ctrl, receiver);
+    Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR);
+
+    // Get length of receiver
+    Node* receiver_cnt  = load_String_length(no_ctrl, receiver);
+
+    // Get start addr of argument
+    Node* argument_val   = load_String_value(no_ctrl, argument);
+    Node* argument_offset = load_String_offset(no_ctrl, argument);
+    Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR);
+
+    // Get length of argument
+    Node* argument_cnt  = load_String_length(no_ctrl, argument);
 
     // Check for receiver count != argument count
     Node* cmp = _gvn.transform( new(C, 3) CmpINode(receiver_cnt, argument_cnt) );
@@ -1028,14 +1045,14 @@
       phi->init_req(4, intcon(0));
       region->init_req(4, if_ne);
     }
-  }
-
-  // Check for count == 0 is done by mach node StrEquals.
-
-  if (!stopped()) {
-    Node* equals = make_string_method_node(Op_StrEquals, receiver, receiver_cnt, argument, argument_cnt);
-    phi->init_req(1, equals);
-    region->init_req(1, control());
+
+    // Check for count == 0 is done by assembler code for StrEquals.
+
+    if (!stopped()) {
+      Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt);
+      phi->init_req(1, equals);
+      region->init_req(1, control());
+    }
   }
 
   // post merge
@@ -1133,20 +1150,9 @@
 
   const int nargs = 2; // number of arguments to push back for uncommon trap in predicate
 
-  const int value_offset  = java_lang_String::value_offset_in_bytes();
-  const int count_offset  = java_lang_String::count_offset_in_bytes();
-  const int offset_offset = java_lang_String::offset_offset_in_bytes();
-
-  ciInstanceKlass* klass = env()->String_klass();
-  const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass);
-  const TypeAryPtr*  source_type = TypeAryPtr::make(TypePtr::NotNull, TypeAry::make(TypeInt::CHAR,TypeInt::POS), ciTypeArrayKlass::make(T_CHAR), true, 0);
-
-  Node* sourceOffseta = basic_plus_adr(string_object, string_object, offset_offset);
-  Node* sourceOffset  = make_load(no_ctrl, sourceOffseta, TypeInt::INT, T_INT, string_type->add_offset(offset_offset));
-  Node* sourceCounta  = basic_plus_adr(string_object, string_object, count_offset);
-  Node* sourceCount   = make_load(no_ctrl, sourceCounta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
-  Node* sourcea       = basic_plus_adr(string_object, string_object, value_offset);
-  Node* source        = make_load(no_ctrl, sourcea, source_type, T_OBJECT, string_type->add_offset(value_offset));
+  Node* source        = load_String_value(no_ctrl, string_object);
+  Node* sourceOffset  = load_String_offset(no_ctrl, string_object);
+  Node* sourceCount   = load_String_length(no_ctrl, string_object);
 
   Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true)) );
   jint target_length = target_array->length();
@@ -1214,10 +1220,6 @@
 //------------------------------inline_string_indexOf------------------------
 bool LibraryCallKit::inline_string_indexOf() {
 
-  const int value_offset  = java_lang_String::value_offset_in_bytes();
-  const int count_offset  = java_lang_String::count_offset_in_bytes();
-  const int offset_offset = java_lang_String::offset_offset_in_bytes();
-
   _sp += 2;
   Node *argument = pop();  // pop non-receiver first:  it was pushed second
   Node *receiver = pop();
@@ -1251,12 +1253,21 @@
     Node*       result_phi = new (C, 4) PhiNode(result_rgn, TypeInt::INT);
     Node* no_ctrl  = NULL;
 
-    // Get counts for string and substr
-    Node* source_cnta = basic_plus_adr(receiver, receiver, count_offset);
-    Node* source_cnt  = make_load(no_ctrl, source_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
-
-    Node* substr_cnta = basic_plus_adr(argument, argument, count_offset);
-    Node* substr_cnt  = make_load(no_ctrl, substr_cnta, TypeInt::INT, T_INT, string_type->add_offset(count_offset));
+    // Get start addr of source string
+    Node* source = load_String_value(no_ctrl, receiver);
+    Node* source_offset = load_String_offset(no_ctrl, receiver);
+    Node* source_start = array_element_address(source, source_offset, T_CHAR);
+
+    // Get length of source string
+    Node* source_cnt  = load_String_length(no_ctrl, receiver);
+
+    // Get start addr of substring
+    Node* substr = load_String_value(no_ctrl, argument);
+    Node* substr_offset = load_String_offset(no_ctrl, argument);
+    Node* substr_start = array_element_address(substr, substr_offset, T_CHAR);
+
+    // Get length of source string
+    Node* substr_cnt  = load_String_length(no_ctrl, argument);
 
     // Check for substr count > string count
     Node* cmp = _gvn.transform( new(C, 3) CmpINode(substr_cnt, source_cnt) );
@@ -1279,7 +1290,7 @@
     }
 
     if (!stopped()) {
-      result = make_string_method_node(Op_StrIndexOf, receiver, source_cnt, argument, substr_cnt);
+      result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt);
       result_phi->init_req(1, result);
       result_rgn->init_req(1, control());
     }
@@ -1304,11 +1315,19 @@
     ciInstance* str = str_const->as_instance();
     assert(str != NULL, "must be instance");
 
-    ciObject* v = str->field_value_by_offset(value_offset).as_object();
-    int       o = str->field_value_by_offset(offset_offset).as_int();
-    int       c = str->field_value_by_offset(count_offset).as_int();
+    ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object();
     ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array
 
+    int o;
+    int c;
+    if (java_lang_String::has_offset_field()) {
+      o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int();
+      c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int();
+    } else {
+      o = 0;
+      c = pat->length();
+    }
+
     // constant strings have no offset and count == length which
     // simplifies the resulting code somewhat so lets optimize for that.
     if (o != 0 || c != pat->length()) {
--- a/src/share/vm/opto/stringopts.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/opto/stringopts.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2012, 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
@@ -528,16 +528,6 @@
   }
 
   // Collect the types needed to talk about the various slices of memory
-  const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
-                                                     false, NULL, 0);
-
-  const TypePtr* value_field_type = string_type->add_offset(java_lang_String::value_offset_in_bytes());
-  const TypePtr* offset_field_type = string_type->add_offset(java_lang_String::offset_offset_in_bytes());
-  const TypePtr* count_field_type = string_type->add_offset(java_lang_String::count_offset_in_bytes());
-
-  value_field_idx = C->get_alias_index(value_field_type);
-  count_field_idx = C->get_alias_index(count_field_type);
-  offset_field_idx = C->get_alias_index(offset_field_type);
   char_adr_idx = C->get_alias_index(TypeAryPtr::CHARS);
 
   // For each locally allocated StringBuffer see if the usages can be
@@ -1173,18 +1163,9 @@
 
 Node* PhaseStringOpts::copy_string(GraphKit& kit, Node* str, Node* char_array, Node* start) {
   Node* string = str;
-  Node* offset = kit.make_load(kit.control(),
-                               kit.basic_plus_adr(string, string, java_lang_String::offset_offset_in_bytes()),
-                               TypeInt::INT, T_INT, offset_field_idx);
-  Node* count = kit.make_load(kit.control(),
-                              kit.basic_plus_adr(string, string, java_lang_String::count_offset_in_bytes()),
-                              TypeInt::INT, T_INT, count_field_idx);
-  const TypeAryPtr*  value_type = TypeAryPtr::make(TypePtr::NotNull,
-                                                   TypeAry::make(TypeInt::CHAR,TypeInt::POS),
-                                                   ciTypeArrayKlass::make(T_CHAR), true, 0);
-  Node* value = kit.make_load(kit.control(),
-                              kit.basic_plus_adr(string, string, java_lang_String::value_offset_in_bytes()),
-                              value_type, T_OBJECT, value_field_idx);
+  Node* offset = kit.load_String_offset(kit.control(), string);
+  Node* count  = kit.load_String_length(kit.control(), string);
+  Node* value  = kit.load_String_value (kit.control(), string);
 
   // copy the contents
   if (offset->is_Con() && count->is_Con() && value->is_Con() && count->get_int() < unroll_string_copy_length) {
@@ -1341,10 +1322,9 @@
           arg = phi;
           sc->set_argument(argi, arg);
         }
-        //         Node* offset = kit.make_load(NULL, kit.basic_plus_adr(arg, arg, offset_offset),
-        //                                      TypeInt::INT, T_INT, offset_field_idx);
-        Node* count = kit.make_load(kit.control(), kit.basic_plus_adr(arg, arg, java_lang_String::count_offset_in_bytes()),
-                                    TypeInt::INT, T_INT, count_field_idx);
+
+        Node* count = kit.load_String_length(kit.control(), arg);
+
         length = __ AddI(length, count);
         string_sizes->init_req(argi, NULL);
         break;
@@ -1435,12 +1415,11 @@
   }
 
   // Intialize the string
-  kit.store_to_memory(kit.control(), kit.basic_plus_adr(result, java_lang_String::offset_offset_in_bytes()),
-                      __ intcon(0), T_INT, offset_field_idx);
-  kit.store_to_memory(kit.control(), kit.basic_plus_adr(result, java_lang_String::count_offset_in_bytes()),
-                      length, T_INT, count_field_idx);
-  kit.store_to_memory(kit.control(), kit.basic_plus_adr(result, java_lang_String::value_offset_in_bytes()),
-                      char_array, T_OBJECT, value_field_idx);
+  if (java_lang_String::has_offset_field()) {
+    kit.store_String_offset(kit.control(), result, __ intcon(0));
+    kit.store_String_length(kit.control(), result, length);
+  }
+  kit.store_String_value(kit.control(), result, char_array);
 
   // hook up the outgoing control and result
   kit.replace_call(sc->end(), result);
--- a/src/share/vm/opto/stringopts.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/opto/stringopts.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2012, 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
@@ -41,9 +41,6 @@
 
   // Memory slices needed for code gen
   int char_adr_idx;
-  int value_field_idx;
-  int count_field_idx;
-  int offset_field_idx;
 
   // Integer.sizeTable - used for int to String conversion
   ciField* size_table_field;
--- a/src/share/vm/runtime/arguments.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/runtime/arguments.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -3022,7 +3022,7 @@
     return result;
   }
 
-#ifdef JAVASE_EMBEDDED
+#if (defined JAVASE_EMBEDDED || defined ARM)
   UNSUPPORTED_OPTION(UseG1GC, "G1 GC");
 #endif
 
--- a/src/share/vm/runtime/os.hpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/runtime/os.hpp	Fri Jun 08 17:13:09 2012 +0100
@@ -490,6 +490,7 @@
   // Print out system information; they are called by fatal error handler.
   // Output format may be different on different platforms.
   static void print_os_info(outputStream* st);
+  static void print_os_info_brief(outputStream* st);
   static void print_cpu_info(outputStream* st);
   static void pd_print_cpu_info(outputStream* st);
   static void print_memory_info(outputStream* st);
@@ -683,14 +684,17 @@
   // Platform dependent stuff
 #ifdef TARGET_OS_FAMILY_linux
 # include "os_linux.hpp"
+# include "os_posix.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_solaris
 # include "os_solaris.hpp"
+# include "os_posix.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_windows
 # include "os_windows.hpp"
 #endif
 #ifdef TARGET_OS_FAMILY_bsd
+# include "os_posix.hpp"
 # include "os_bsd.hpp"
 #endif
 #ifdef TARGET_OS_ARCH_linux_x86
--- a/src/share/vm/utilities/vmError.cpp	Wed May 23 20:37:54 2012 +0100
+++ b/src/share/vm/utilities/vmError.cpp	Fri Jun 08 17:13:09 2012 +0100
@@ -692,6 +692,12 @@
        // extended (i.e., more detailed) version.
        Universe::print_on(st, true /* extended */);
        st->cr();
+
+       Universe::heap()->barrier_set()->print_on(st);
+       st->cr();
+
+       st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
+       st->cr();
      }
 
   STEP(195, "(printing code cache information)" )