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8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime. Reviewed-by: twisti, johnc Contributed-by: Martin Doerr <martin.doerr@sap.com>
author johnc
date Wed, 24 Apr 2013 14:48:43 -0700
parents 892acf0431ef
children 989155e2d07a 26579ac80ce9
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#
# Copyright (c) 2005, 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 signal interposition library, used by vm.make

# libjsig.so: signal interposition library
JSIG = jsig
LIBJSIG = lib$(JSIG).so

LIBJSIG_DEBUGINFO   = lib$(JSIG).debuginfo
LIBJSIG_DIZ         = lib$(JSIG).diz

JSIGSRCDIR = $(GAMMADIR)/src/os/$(Platform_os_family)/vm

DEST_JSIG           = $(JDK_LIBDIR)/$(LIBJSIG)
DEST_JSIG_DEBUGINFO = $(JDK_LIBDIR)/$(LIBJSIG_DEBUGINFO)
DEST_JSIG_DIZ       = $(JDK_LIBDIR)/$(LIBJSIG_DIZ)

LIBJSIG_MAPFILE = $(MAKEFILES_DIR)/mapfile-vers-jsig

# On Linux we really dont want a mapfile, as this library is small 
# and preloaded using LD_PRELOAD, making functions private will 
# cause problems with interposing. See CR: 6466665
# LFLAGS_JSIG += $(MAPFLAG:FILENAME=$(LIBJSIG_MAPFILE))

LFLAGS_JSIG += -D_GNU_SOURCE -D_REENTRANT $(LDFLAGS_HASH_STYLE)

# DEBUG_BINARIES overrides everything, use full -g debug information
ifeq ($(DEBUG_BINARIES), true)
  JSIG_DEBUG_CFLAGS = -g
endif

$(LIBJSIG): $(JSIGSRCDIR)/jsig.c $(LIBJSIG_MAPFILE)
	@echo Making signal interposition lib...
	$(QUIETLY) $(CC) $(SYMFLAG) $(ARCHFLAG) $(SHARED_FLAG) $(PICFLAG) \
                         $(LFLAGS_JSIG) $(JSIG_DEBUG_CFLAGS) -o $@ $< -ldl
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJSIG_DEBUGINFO)
	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJSIG_DEBUGINFO) $@
  ifeq ($(STRIP_POLICY),all_strip)
	$(QUIETLY) $(STRIP) $@
  else
    ifeq ($(STRIP_POLICY),min_strip)
	$(QUIETLY) $(STRIP) -g $@
    # implied else here is no stripping at all
    endif
  endif
  ifeq ($(ZIP_DEBUGINFO_FILES),1)
	$(ZIPEXE) -q -y $(LIBJSIG_DIZ) $(LIBJSIG_DEBUGINFO)
	$(RM) $(LIBJSIG_DEBUGINFO)
  endif
endif

install_jsig: $(LIBJSIG)
	@echo "Copying $(LIBJSIG) to $(DEST_JSIG)"
	$(QUIETLY) test -f $(LIBJSIG_DEBUGINFO) && \
	    cp -f $(LIBJSIG_DEBUGINFO) $(DEST_JSIG_DEBUGINFO)
	$(QUIETLY) test -f $(LIBJSIG_DIZ) && \
	    cp -f $(LIBJSIG_DIZ) $(DEST_JSIG_DIZ)
	$(QUIETLY) cp -f $(LIBJSIG) $(DEST_JSIG) && echo "Done"

.PHONY: install_jsig