jdk8-mips64-public/hotspot: make/linux/makefiles/gcc.make@dee6a1ce4a0c

8141491: Unaligned memory access in Bits.c
Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes

1 #

     2 # Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.

     3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

4 #

     5 # This code is free software; you can redistribute it and/or modify it

     6 # under the terms of the GNU General Public License version 2 only, as

     7 # published by the Free Software Foundation.

8 #

     9 # This code is distributed in the hope that it will be useful, but WITHOUT

    10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12 # version 2 for more details (a copy is included in the LICENSE file that

    13 # accompanied this code).

    14 #

    15 # You should have received a copy of the GNU General Public License version

    16 # 2 along with this work; if not, write to the Free Software Foundation,

    17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18 #

    19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20 # or visit www.oracle.com if you need additional information or have any

    21 # questions.

    22 #

    23 #

    25 #------------------------------------------------------------------------

    26 # CC, CXX & AS

    28 # If a SPEC is not set already, then use these defaults.

    29 ifeq ($(SPEC),)

    30   # When cross-compiling the ALT_COMPILER_PATH points

    31   # to the cross-compilation toolset

    32   ifdef CROSS_COMPILE_ARCH

    33     CXX = $(ALT_COMPILER_PATH)/g++

    34     CC  = $(ALT_COMPILER_PATH)/gcc

    35     HOSTCXX = g++

    36     HOSTCC  = gcc

    37     STRIP = $(ALT_COMPILER_PATH)/strip

    38   else

    39     ifeq ($(USE_CLANG), true)

    40       CXX = clang++

    41       CC  = clang

    42     else

    43       CXX = g++

    44       CC  = gcc

    45     endif

    47     HOSTCXX = $(CXX)

    48     HOSTCC  = $(CC)

    49     STRIP = strip

    50   endif

    51   AS  = $(CC) -c

    52 endif

    55 ifeq ($(USE_CLANG), true)

    56   CC_VER_MAJOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f1)

    57   CC_VER_MINOR := $(shell $(CC) -v 2>&1 | grep version | sed "s/.*version \([0-9]*\.[0-9]*\).*/\1/" | cut -d'.' -f2)

    58 else

    59   # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only

    60   # prints the numbers (e.g. "2.95", "3.2.1")

    61   CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)

    62   CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)

    63 endif

    66 ifeq ($(USE_CLANG), true)

    67   # Clang has precompiled headers support by default, but the user can switch

    68   # it off by using 'USE_PRECOMPILED_HEADER=0'.

    69   ifdef LP64

    70     ifeq ($(USE_PRECOMPILED_HEADER),)

    71       USE_PRECOMPILED_HEADER=1

    72     endif

    73   else

    74     # We don't support precompiled headers on 32-bit builds because there some files are

    75     # compiled with -fPIC while others are compiled without (see 'NONPIC_OBJ_FILES' rules.make)

    76     # Clang produces an error if the PCH file was compiled with other options than the actual compilation unit.

    77     USE_PRECOMPILED_HEADER=0

    78   endif

    80   ifeq ($(USE_PRECOMPILED_HEADER),1)

    82     ifndef LP64

    83       $(error " Precompiled Headers only supported on 64-bit platforms!")

    84     endif

    86     PRECOMPILED_HEADER_DIR=.

    87     PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp

    88     PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.pch

    90     PCH_FLAG = -include precompiled.hpp

    91     PCH_FLAG/DEFAULT = $(PCH_FLAG)

    92     PCH_FLAG/NO_PCH = -DNO_PCH

    93     PCH_FLAG/BY_FILE = $(PCH_FLAG/$@)$(PCH_FLAG/DEFAULT$(PCH_FLAG/$@))

    95     VM_PCH_FLAG/LIBJVM = $(PCH_FLAG/BY_FILE)

    96     VM_PCH_FLAG/AOUT =

    97     VM_PCH_FLAG = $(VM_PCH_FLAG/$(LINK_INTO))

    99     # We only use precompiled headers for the JVM build

   100     CFLAGS += $(VM_PCH_FLAG)

   102     # There are some files which don't like precompiled headers

   103     # The following files are build with 'OPT_CFLAGS/NOOPT' (-O0) in the opt build.

   104     # But Clang doesn't support a precompiled header which was compiled with -O3

   105     # to be used in a compilation unit which uses '-O0'. We could also prepare an

   106     # extra '-O0' PCH file for the opt build and use it here, but it's probably

   107     # not worth the effoert as long as only two files need this special handling.

   108     PCH_FLAG/loopTransform.o = $(PCH_FLAG/NO_PCH)

   109     PCH_FLAG/sharedRuntimeTrig.o = $(PCH_FLAG/NO_PCH)

   110     PCH_FLAG/sharedRuntimeTrans.o = $(PCH_FLAG/NO_PCH)

   112   endif

   113 else # ($(USE_CLANG), true)

   114   # check for precompiled headers support

   115   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"

   116     # Allow the user to turn off precompiled headers from the command line.

   117     ifneq ($(USE_PRECOMPILED_HEADER),0)

   118       PRECOMPILED_HEADER_DIR=.

   119       PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp

   120       PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch

   121     endif

   122   endif

   123 endif

   125 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.

   126 ifeq ($(USE_PRECOMPILED_HEADER),0)

   127   CFLAGS += -DDONT_USE_PRECOMPILED_HEADER

   128 endif

   131 #------------------------------------------------------------------------

   132 # Compiler flags

   134 # position-independent code

   135 PICFLAG = -fPIC

   137 VM_PICFLAG/LIBJVM = $(PICFLAG)

   138 VM_PICFLAG/AOUT   =

   139 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

   141 ifeq ($(JVM_VARIANT_ZERO), true)

   142 CFLAGS += $(LIBFFI_CFLAGS)

   143 endif

   144 ifeq ($(JVM_VARIANT_ZEROSHARK), true)

   145 CFLAGS += $(LIBFFI_CFLAGS)

   146 CFLAGS += $(LLVM_CFLAGS)

   147 endif

   148 CFLAGS += $(VM_PICFLAG)

   149 CFLAGS += -fno-rtti

   150 CFLAGS += -fno-exceptions

   151 CFLAGS += -D_REENTRANT

   152 ifeq ($(USE_CLANG),)

   153   CFLAGS += -fcheck-new

   154   # version 4 and above support fvisibility=hidden (matches jni_x86.h file)

   155   # except 4.1.2 gives pointless warnings that can't be disabled (afaik)

   156   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"

   157     CFLAGS += -fvisibility=hidden

   158   endif

   159 else

   160   CFLAGS += -fvisibility=hidden

   161 endif

   163 ifeq ($(USE_CLANG), true)

   164   # Before Clang 3.1, we had to pass the stack alignment specification directly to llvm with the help of '-mllvm'

   165   # Starting with version 3.1, Clang understands the '-mstack-alignment' (and rejects '-mllvm -stack-alignment')

   166   ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 1 \) \))" "0"

   167     STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mstack-alignment=16

   168   else

   169     STACK_ALIGNMENT_OPT = -mno-omit-leaf-frame-pointer -mllvm -stack-alignment=16

   170   endif

   171 endif

   173 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))

   174 ARCHFLAG/i486    = -m32 -march=i586

   175 ARCHFLAG/amd64   = -m64 $(STACK_ALIGNMENT_OPT)

   176 ARCHFLAG/ia64    =

   177 ARCHFLAG/sparc   = -m32 -mcpu=v9

   178 ARCHFLAG/sparcv9 = -m64 -mcpu=v9

   179 ARCHFLAG/zero    = $(ZERO_ARCHFLAG)

   180 ARCHFLAG/ppc64   =  -m64

   182 CFLAGS     += $(ARCHFLAG)

   183 AOUT_FLAGS += $(ARCHFLAG)

   184 LFLAGS     += $(ARCHFLAG)

   185 ASFLAGS    += $(ARCHFLAG)

   187 # Use C++ Interpreter

   188 ifdef CC_INTERP

   189   CFLAGS += -DCC_INTERP

   190 endif

   192 # Keep temporary files (.ii, .s)

   193 ifdef NEED_ASM

   194   CFLAGS += -save-temps

   195 else

   196   CFLAGS += -pipe

   197 endif

   199 # Compiler warnings are treated as errors

   200 WARNINGS_ARE_ERRORS = -Werror

   202 ifeq ($(USE_CLANG), true)

   203   # However we need to clean the code up before we can unrestrictedly enable this option with Clang

   204   WARNINGS_ARE_ERRORS += -Wno-logical-op-parentheses -Wno-parentheses-equality -Wno-parentheses

   205   WARNINGS_ARE_ERRORS += -Wno-switch -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare

   206   WARNINGS_ARE_ERRORS += -Wno-delete-non-virtual-dtor -Wno-deprecated -Wno-format -Wno-dynamic-class-memaccess

   207   WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body

   208 endif

   210 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wunused-value

   212 ifeq ($(USE_CLANG),)

   213   # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit

   214   # conversions which might affect the values. Only enable it in earlier versions.

   215   ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"

   216     WARNING_FLAGS += -Wconversion

   217   endif

   218 endif

   220 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)

   221 # Special cases

   222 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))

   224 # The flags to use for an Optimized g++ build

   225 OPT_CFLAGS/SIZE=-Os

   226 OPT_CFLAGS/SPEED=-O3

   228 # Hotspot uses very unstrict aliasing turn this optimization off

   229 # This option is added to CFLAGS rather than OPT_CFLAGS

   230 # so that OPT_CFLAGS overrides get this option too.

   231 CFLAGS += -fno-strict-aliasing

   233 OPT_CFLAGS_DEFAULT ?= SPEED

   235 ifdef OPT_CFLAGS

   236   ifneq ("$(origin OPT_CFLAGS)", "command line")

   237     $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")

   238   endif

   239 endif

   241 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)

   243 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp

   244 # if we use expensive-optimizations

   245 ifeq ($(BUILDARCH), ia64)

   246 OPT_CFLAGS += -fno-expensive-optimizations

   247 endif

   249 OPT_CFLAGS/NOOPT=-O0

   251 # Work around some compiler bugs.

   252 ifeq ($(USE_CLANG), true)

   253   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)

   254     OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)

   255   endif

   256 else

   257   # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.

   258   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1)

   259     OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT)

   260   endif

   261 endif

   263 # Flags for generating make dependency flags.

   264 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)

   265 ifeq ($(USE_CLANG),)

   266   ifneq ("${CC_VER_MAJOR}", "2")

   267     DEPFLAGS += -fpch-deps

   268   endif

   269 endif

   271 #------------------------------------------------------------------------

   272 # Linker flags

   274 # statically link libstdc++.so, work with gcc but ignored by g++

   275 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic

   277 ifeq ($(USE_CLANG),)

   278   # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.

   279   ifneq ("${CC_VER_MAJOR}", "2")

   280     STATIC_LIBGCC += -static-libgcc

   281   endif

   283   ifeq ($(BUILDARCH), ia64)

   284     LFLAGS += -Wl,-relax

   285   endif

   286 endif

   288 # Enable linker optimization

   289 LFLAGS += -Xlinker -O1

   291 ifeq ($(USE_CLANG),)

   292   # If this is a --hash-style=gnu system, use --hash-style=both

   293   #   The gnu .hash section won't work on some Linux systems like SuSE 10.

   294   _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu')

   295   ifneq ($(_HAS_HASH_STYLE_GNU),)

   296     LDFLAGS_HASH_STYLE = -Wl,--hash-style=both

   297   endif

   298 else

   299   # Don't know how to find out the 'hash style' of a system as '-dumpspecs'

   300   # doesn't work for Clang. So for now we'll alwys use --hash-style=both

   301   LDFLAGS_HASH_STYLE = -Wl,--hash-style=both

   302 endif

   304 LFLAGS += $(LDFLAGS_HASH_STYLE)

   306 LDFLAGS_NO_EXEC_STACK="-Wl,-z,noexecstack"

   308 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.

   309 MAPFLAG = -Xlinker --version-script=FILENAME

   311 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj

   312 SONAMEFLAG = -Xlinker -soname=SONAME

   314 # Build shared library

   315 SHARED_FLAG = -shared

   317 # Keep symbols even they are not used

   318 AOUT_FLAGS += -Xlinker -export-dynamic

   320 #------------------------------------------------------------------------

   321 # Debug flags

   323 ifeq ($(USE_CLANG), true)

   324   # Restrict the debug information created by Clang to avoid

   325   # too big object files and speed the build up a little bit

   326   # (see http://llvm.org/bugs/show_bug.cgi?id=7554)

   327   CFLAGS += -flimit-debug-info

   328 endif

   330 # DEBUG_BINARIES uses full -g debug information for all configs

   331 ifeq ($(DEBUG_BINARIES), true)

   332   CFLAGS += -g

   333 else

   334   DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))

   335   ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)

   336     DEBUG_CFLAGS += -g

   337   endif

   339   ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)

   340     FASTDEBUG_CFLAGS += $(FASTDEBUG_CFLAGS/$(BUILDARCH))

   341     ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),)

   342       FASTDEBUG_CFLAGS/$(BUILDARCH) = -g

   343     endif

   345     OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH))

   346     ifeq ($(OPT_CFLAGS/$(BUILDARCH)),)

   347       OPT_CFLAGS/$(BUILDARCH) = -g

   348     endif

   349   endif

   350 endif

   352 # If we are building HEADLESS, pass on to VM

   353 # so it can set the java.awt.headless property

   354 ifdef HEADLESS

   355 CFLAGS += -DHEADLESS

   356 endif

   358 # We are building Embedded for a small device

   359 # favor code space over speed

   360 ifdef MINIMIZE_RAM_USAGE

   361 CFLAGS += -DMINIMIZE_RAM_USAGE

   362 endif

   364 # Stack walking in the JVM relies on frame pointer (%rbp) to walk thread stack.

   365 # Explicitly specify -fno-omit-frame-pointer because it is off by default

   366 # starting with gcc 4.6.

   367 ifndef USE_SUNCC

   368   CFLAGS += -fno-omit-frame-pointer

   369 endif

   371 -include $(HS_ALT_MAKE)/linux/makefiles/gcc.make

Mercurial > jdk8-mips64-public > hotspot / file revision

make/linux/makefiles/gcc.make@dee6a1ce4a0c

make/linux/makefiles/gcc.make