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Message-ID: <CAGXu5jJcxDObPaVN25Keru6Gj9jo=EgvzhrLUUPcC0pki8pp_g@mail.gmail.com>
Date: Wed, 17 Feb 2016 16:18:13 -0800
From: Kees Cook <keescook@...omium.org>
To: Emese Revfy <re.emese@...il.com>
Cc: linux-kbuild <linux-kbuild@...r.kernel.org>, PaX Team <pageexec@...email.hu>,
Brad Spengler <spender@...ecurity.net>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Michal Marek <mmarek@...e.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: Re: [PATCH v2 1/3] GCC plugin infrastructure
On Thu, Feb 11, 2016 at 2:39 PM, Emese Revfy <re.emese@...il.com> wrote:
> This patch allows to build the whole kernel with GCC plugins. It was ported from
> grsecurity/PaX. The infrastructure supports building out-of-tree modules and
> building in a separate directory. Cross-compilation is supported too but
> currently only the x86 architecture enables plugins.
>
> The directory of the gcc plugins is tools/gcc. You can use a file or a directory
> there. The plugins compile with these options:
> * -fno-rtti: gcc is compiled with this option so the plugins must use it too
> * -fno-exceptions: this is inherited from gcc too
> * -fasynchronous-unwind-tables: this is inherited from gcc too
> * -ggdb: it is useful for debugging a plugin (better backtrace on internal
> errors)
> * -Wno-narrowing: to suppress warnings from gcc headers (ipa-utils.h)
> * -Wno-unused-variable: to suppress warnings from gcc headers (gcc_version
> variable, plugin-version.h)
>
> The infrastructure introduces a new Makefile target called gcc-plugins. It
> supports all gcc versions from 4.5 to 6.0. The scripts/gcc-plugin.sh script
> chooses the proper host compiler (gcc-4.7 can be built by either gcc or g++).
> This script also checks the availability of the included headers in
> tools/gcc/gcc-common.h.
>
> The gcc-common.h header contains frequently included headers for GCC plugins
> and it has a compatibility layer for the supported gcc versions.
>
> Note that 'make clean' keeps the *.so files (only the distclean or mrproper
> targets clean all) because they are needed for out-of-tree modules.
> ---
> Documentation/dontdiff | 1 +
> Makefile | 41 ++-
> arch/Kconfig | 10 +
> arch/x86/Kconfig | 1 +
> init/Makefile | 3 +
> scripts/Makefile.build | 2 +-
> scripts/Makefile.clean | 3 +-
> scripts/Makefile.gcc-plugins | 26 ++
> scripts/Makefile.host | 69 +++-
> scripts/gcc-plugin.sh | 51 +++
> scripts/link-vmlinux.sh | 2 +-
> scripts/package/builddeb | 1 +
> tools/gcc/Makefile | 15 +
> tools/gcc/gcc-common.h | 794 +++++++++++++++++++++++++++++++++++++++++++
> 14 files changed, 1004 insertions(+), 15 deletions(-)
> create mode 100644 scripts/Makefile.gcc-plugins
> create mode 100644 scripts/gcc-plugin.sh
> create mode 100644 tools/gcc/Makefile
> create mode 100644 tools/gcc/gcc-common.h
>
> diff --git a/Documentation/dontdiff b/Documentation/dontdiff
> index 8ea834f..5385cba 100644
> --- a/Documentation/dontdiff
> +++ b/Documentation/dontdiff
> @@ -3,6 +3,7 @@
> *.bc
> *.bin
> *.bz2
> +*.c.[012]*.*
> *.cis
> *.cpio
> *.csp
> diff --git a/Makefile b/Makefile
> index 9092c16..82b1db1 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -435,8 +435,8 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
> # Rules shared between *config targets and build targets
>
> # Basic helpers built in scripts/
> -PHONY += scripts_basic
> -scripts_basic:
> +PHONY += scripts_basic gcc-plugins
> +scripts_basic: gcc-plugins
> $(Q)$(MAKE) $(build)=scripts/basic
> $(Q)rm -f .tmp_quiet_recordmcount
>
> @@ -623,6 +623,8 @@ endif
> # Tell gcc to never replace conditional load with a non-conditional one
> KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
>
> +include scripts/Makefile.gcc-plugins
> +
> ifdef CONFIG_READABLE_ASM
> # Disable optimizations that make assembler listings hard to read.
> # reorder blocks reorders the control in the function
> @@ -946,6 +948,8 @@ endif
>
> # The actual objects are generated when descending,
> # make sure no implicit rule kicks in
> +$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
>
> # Handle descending into subdirectories listed in $(vmlinux-dirs)
> @@ -955,7 +959,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
> # Error messages still appears in the original language
>
> PHONY += $(vmlinux-dirs)
> -$(vmlinux-dirs): prepare scripts
> +$(vmlinux-dirs): gcc-plugins prepare scripts
> $(Q)$(MAKE) $(build)=$@
>
> define filechk_kernel.release
> @@ -998,10 +1002,13 @@ prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
>
> archprepare: archheaders archscripts prepare1 scripts_basic
>
> +prepare0: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +prepare0: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> prepare0: archprepare FORCE
> $(Q)$(MAKE) $(build)=.
>
> # All the preparing..
> +prepare: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
> prepare: prepare0
>
> # Generate some files
> @@ -1112,6 +1119,8 @@ all: modules
> # using awk while concatenating to the final file.
>
> PHONY += modules
> +modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
> $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
> @$(kecho) ' Building modules, stage 2.';
> @@ -1127,7 +1136,7 @@ modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
>
> # Target to prepare building external modules
> PHONY += modules_prepare
> -modules_prepare: prepare scripts
> +modules_prepare: gcc-plugins prepare scripts
>
> # Target to install modules
> PHONY += modules_install
> @@ -1232,7 +1241,7 @@ distclean: mrproper
> @find $(srctree) $(RCS_FIND_IGNORE) \
> \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
> -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
> - -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
> + -o -name '.*.rej' -o -name '*.so' -o -name '*%' -o -name 'core' \) \
> -type f -print | xargs rm -f
>
>
> @@ -1399,6 +1408,8 @@ PHONY += $(module-dirs) modules
> $(module-dirs): crmodverdir $(objtree)/Module.symvers
> $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
>
> +modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> modules: $(module-dirs)
> @$(kecho) ' Building modules, stage 2.';
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> @@ -1540,17 +1551,21 @@ else
> target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
> endif
>
> -%.s: %.c prepare scripts FORCE
> +%.s: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +%.s: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> +%.s: %.c gcc-plugins prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> %.i: %.c prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> -%.o: %.c prepare scripts FORCE
> +%.o: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +%.o: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> +%.o: %.c gcc-plugins prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> %.lst: %.c prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> -%.s: %.S prepare scripts FORCE
> +%.s: %.S gcc-plugins prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> -%.o: %.S prepare scripts FORCE
> +%.o: %.S gcc-plugins prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> %.symtypes: %.c prepare scripts FORCE
> $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> @@ -1562,11 +1577,15 @@ endif
> $(build)=$(build-dir)
> # Make sure the latest headers are built for Documentation
> Documentation/: headers_install
> -%/: prepare scripts FORCE
> +%/: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +%/: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> +%/: gcc-plugins prepare scripts FORCE
> $(cmd_crmodverdir)
> $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
> $(build)=$(build-dir)
> -%.ko: prepare scripts FORCE
> +%.ko: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
> +%.ko: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
> +%.ko: gcc-plugins prepare scripts FORCE
> $(cmd_crmodverdir)
> $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
> $(build)=$(build-dir) $(@:.ko=.o)
> diff --git a/arch/Kconfig b/arch/Kconfig
> index 155e6cd..a95e5b1 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -357,6 +357,16 @@ config SECCOMP_FILTER
>
> See Documentation/prctl/seccomp_filter.txt for details.
>
> +menu "GCC plugins"
> +
> +config HAVE_GCC_PLUGINS
> + bool
> + help
> + An arch should select this symbol if it supports building with
> + gcc plugins.
> +
> +endmenu # "GCC plugins"
> +
> config HAVE_CC_STACKPROTECTOR
> bool
> help
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 248faa8..c2f96ec 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -157,6 +157,7 @@ config X86
> select VIRT_TO_BUS
> select X86_DEV_DMA_OPS if X86_64
> select X86_FEATURE_NAMES if PROC_FS
> + select HAVE_GCC_PLUGINS
>
> config INSTRUCTION_DECODER
> def_bool y
> diff --git a/init/Makefile b/init/Makefile
> index 7bc47ee..6da2dc7 100644
> --- a/init/Makefile
> +++ b/init/Makefile
> @@ -2,6 +2,9 @@
> # Makefile for the linux kernel.
> #
>
> +ccflags-y := $(GCC_PLUGINS_CFLAGS)
> +asflags-y := $(GCC_PLUGINS_AFLAGS)
> +
> obj-y := main.o version.o mounts.o
> ifneq ($(CONFIG_BLK_DEV_INITRD),y)
> obj-y += noinitramfs.o
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 2c47f9c..9d46008 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -60,7 +60,7 @@ endif
> endif
>
> # Do not include host rules unless needed
> -ifneq ($(hostprogs-y)$(hostprogs-m),)
> +ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),)
> include scripts/Makefile.host
> endif
>
> diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
> index 55c96cb..e4e88ab 100644
> --- a/scripts/Makefile.clean
> +++ b/scripts/Makefile.clean
> @@ -38,7 +38,8 @@ subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
> __clean-files := $(extra-y) $(extra-m) $(extra-) \
> $(always) $(targets) $(clean-files) \
> $(host-progs) \
> - $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
> + $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
> + $(hostlibs-y) $(hostlibs-m) $(hostlibs-)
>
> __clean-files := $(filter-out $(no-clean-files), $(__clean-files))
>
> diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
> new file mode 100644
> index 0000000..a60a88e
> --- /dev/null
> +++ b/scripts/Makefile.gcc-plugins
> @@ -0,0 +1,26 @@
> +ifeq ($(call cc-ifversion, -ge, 0408, y), y)
> +PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCXX)" "$(HOSTCXX)" "$(CC)")
> +else
> +PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)")
> +endif
> +ifneq ($(PLUGINCC),)
> +export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGINS_AFLAGS
> +ifeq ($(KBUILD_EXTMOD),)
> +gcc-plugins:
> + $(Q)$(MAKE) $(build)=tools/gcc
> +else
> +gcc-plugins: ;
> +endif
> +else
> +gcc-plugins:
> +ifeq ($(call cc-ifversion, -ge, 0405, y), y)
> + $(Q)echo "warning, your gcc installation does not support plugins, perhaps the necessary headers are missing?"
These warnings weren't going to stderr. They should probably be using
$(warning ...) instead of a shell echo.
> +ifeq ($(call cc-ifversion, -ge, 0408, y), y)
> + $(CONFIG_SHELL) -x $(srctree)/scripts/gcc-plugin.sh "$(HOSTCXX)" "$(HOSTCXX)" "$(CC)"
> +else
> + $(CONFIG_SHELL) -x $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)"
Is there a reason for these to be running with -x? This makes it noisy
when running with V=0 (the default).
> +endif
> +else
> + $(Q)echo "warning, your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least"
> +endif
> +endif
> diff --git a/scripts/Makefile.host b/scripts/Makefile.host
> index 133edfa..4d180d9 100644
> --- a/scripts/Makefile.host
> +++ b/scripts/Makefile.host
> @@ -20,7 +20,25 @@
> # Will compile qconf as a C++ program, and menu as a C program.
> # They are linked as C++ code to the executable qconf
>
> +# hostprogs-y := conf
> +# conf-objs := conf.o libkconfig.so
> +# libkconfig-objs := expr.o type.o
> +# Will create a shared library named libkconfig.so that consists of
> +# expr.o and type.o (they are both compiled as C code and the object files
> +# are made as position independent code).
> +# conf.c is compiled as a C program, and conf.o is linked together with
> +# libkconfig.so as the executable conf.
> +# Note: Shared libraries consisting of C++ files are not supported
> +
> +# hostcc-option
> +# Usage: cflags-y += $(call hostcc-option,-march=winchip-c6,-march=i586)
> +
> +hostcc-option = $(call try-run,\
> + $(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
> +
> __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
> +__hostlibs := $(sort $(hostlibs-y) $(hostlibs-m))
> +__hostcxxlibs := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))
>
> # C code
> # Executables compiled from a single .c file
> @@ -42,6 +60,19 @@ host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
> # C++ Object (.o) files compiled from .cc files
> host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
>
> +# Shared libaries (only .c supported)
> +# Shared libraries (.so) - all .so files referenced in "xxx-objs"
> +host-cshlib := $(sort $(filter %.so, $(host-cobjs)))
> +host-cshlib += $(sort $(filter %.so, $(__hostlibs)))
> +host-cxxshlib := $(sort $(filter %.so, $(__hostcxxlibs)))
> +# Remove .so files from "xxx-objs"
> +host-cobjs := $(filter-out %.so,$(host-cobjs))
> +host-cxxobjs := $(filter-out %.so,$(host-cxxobjs))
> +
> +# Object (.o) files used by the shared libaries
> +host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
> +host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
> +
> # output directory for programs/.o files
> # hostprogs-y := tools/build may have been specified.
> # Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation
> @@ -56,6 +87,10 @@ host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
> host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
> host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti))
> host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs))
> +host-cshlib := $(addprefix $(obj)/,$(host-cshlib))
> +host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib))
> +host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs))
> +host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs))
> host-objdirs := $(addprefix $(obj)/,$(host-objdirs))
>
> obj-dirs += $(host-objdirs)
> @@ -124,5 +159,37 @@ quiet_cmd_host-cxxobjs = HOSTCXX $@
> $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
> $(call if_changed_dep,host-cxxobjs)
>
> +# Compile .c file, create position independent .o file
> +# host-cshobjs -> .o
> +quiet_cmd_host-cshobjs = HOSTCC -fPIC $@
> + cmd_host-cshobjs = $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
> +$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
> + $(call if_changed_dep,host-cshobjs)
> +
> +# Compile .c file, create position independent .o file
> +# host-cxxshobjs -> .o
> +quiet_cmd_host-cxxshobjs = HOSTCXX -fPIC $@
> + cmd_host-cxxshobjs = $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
> +$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
> + $(call if_changed_dep,host-cxxshobjs)
> +
> +# Link a shared library, based on position independent .o files
> +# *.o -> .so shared library (host-cshlib)
> +quiet_cmd_host-cshlib = HOSTLLD -shared $@
> + cmd_host-cshlib = $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
> + $(addprefix $(obj)/,$($(@F:.so=-objs))) \
> + $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
> +$(host-cshlib): $(obj)/%: $(host-cshobjs) FORCE
> + $(call if_changed,host-cshlib)
> +
> +# Link a shared library, based on position independent .o files
> +# *.o -> .so shared library (host-cxxshlib)
> +quiet_cmd_host-cxxshlib = HOSTLLD -shared $@
> + cmd_host-cxxshlib = $(HOSTCXX) $(HOSTLDFLAGS) -shared -o $@ \
> + $(addprefix $(obj)/,$($(@F:.so=-objs))) \
> + $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
> +$(host-cxxshlib): $(obj)/%: $(host-cxxshobjs) FORCE
> + $(call if_changed,host-cxxshlib)
> +
> targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
> - $(host-cxxmulti) $(host-cxxobjs)
> + $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)
> diff --git a/scripts/gcc-plugin.sh b/scripts/gcc-plugin.sh
> new file mode 100644
> index 0000000..eaa4fce
> --- /dev/null
> +++ b/scripts/gcc-plugin.sh
> @@ -0,0 +1,51 @@
> +#!/bin/sh
> +srctree=$(dirname "$0")
> +gccplugins_dir=$($3 -print-file-name=plugin)
> +plugincc=$($1 -E -x c++ - -o /dev/null -I"${srctree}"/../tools/gcc -I"${gccplugins_dir}"/include 2>&1 <<EOF
> +#include "gcc-common.h"
> +#if BUILDING_GCC_VERSION >= 4008 || defined(ENABLE_BUILD_WITH_CXX)
> +#warning $2 CXX
> +#else
> +#warning $1 CC
> +#endif
> +EOF
> +)
> +
> +if [ $? -ne 0 ]
> +then
> + exit 1
> +fi
> +
> +case "$plugincc" in
> + *"$1 CC"*)
> + echo "$1"
> + exit 0
> + ;;
> +
> + *"$2 CXX"*)
> + # the c++ compiler needs another test, see below
> + ;;
> +
> + *)
> + exit 1
> + ;;
> +esac
> +
> +# we need a c++ compiler that supports the designated initializer GNU extension
> +plugincc=$($2 -c -x c++ -std=gnu++98 - -fsyntax-only -I"${srctree}"/../tools/gcc -I"${gccplugins_dir}"/include 2>&1 <<EOF
> +#include "gcc-common.h"
> +class test {
> +public:
> + int test;
> +} test = {
> + .test = 1
> +};
> +EOF
> +)
> +
> +if [ $? -eq 0 ]
> +then
> + echo "$2"
> + exit 0
> +fi
> +exit 1
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 49d61ad..69ee2cf 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -184,7 +184,7 @@ else
> fi;
>
> # final build of init/
> -${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init
> +${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init GCC_PLUGINS_CFLAGS="${GCC_PLUGINS_CFLAGS}" GCC_PLUGINS_AFLAGS="${GCC_PLUGINS_AFLAGS}"
>
> kallsymso=""
> kallsyms_vmlinux=""
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index 6c3b038..54e0b5e 100755
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -326,6 +326,7 @@ fi
> (cd $srctree; find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform) >> "$objtree/debian/hdrsrcfiles"
> (cd $srctree; find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f) >> "$objtree/debian/hdrsrcfiles"
> (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
> +(cd $objtree; find tools/gcc -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
> destdir=$kernel_headers_dir/usr/src/linux-headers-$version
> mkdir -p "$destdir"
> (cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
> diff --git a/tools/gcc/Makefile b/tools/gcc/Makefile
> new file mode 100644
> index 0000000..b2d64af
> --- /dev/null
> +++ b/tools/gcc/Makefile
> @@ -0,0 +1,15 @@
> +GCC_PLUGINS_DIR := $(shell $(CC) -print-file-name=plugin)
> +
> +ifeq ($(PLUGINCC),$(HOSTCC))
> +HOSTLIBS := hostlibs
> +HOST_EXTRACFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu99 -ggdb
> +export HOST_EXTRACFLAGS
> +else
> +HOSTLIBS := hostcxxlibs
> +HOST_EXTRACXXFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu++98 -fno-rtti -fno-exceptions -fasynchronous-unwind-tables -ggdb -Wno-narrowing -Wno-unused-variable
> +export HOST_EXTRACXXFLAGS
> +endif
> +
> +export GCCPLUGINS_DIR HOSTLIBS
> +
> +always := $($(HOSTLIBS)-y)
> diff --git a/tools/gcc/gcc-common.h b/tools/gcc/gcc-common.h
> new file mode 100644
> index 0000000..355bb1a
> --- /dev/null
> +++ b/tools/gcc/gcc-common.h
> @@ -0,0 +1,794 @@
> +#ifndef GCC_COMMON_H_INCLUDED
> +#define GCC_COMMON_H_INCLUDED
> +
> +#include "bversion.h"
> +#if BUILDING_GCC_VERSION >= 6000
> +#include "gcc-plugin.h"
> +#else
> +#include "plugin.h"
> +#endif
> +#include "plugin-version.h"
> +#include "config.h"
> +#include "system.h"
> +#include "coretypes.h"
> +#include "tm.h"
> +#include "line-map.h"
> +#include "input.h"
> +#include "tree.h"
> +
> +#include "tree-inline.h"
> +#include "version.h"
> +#include "rtl.h"
> +#include "tm_p.h"
> +#include "flags.h"
> +#include "hard-reg-set.h"
> +#include "output.h"
> +#include "except.h"
> +#include "function.h"
> +#include "toplev.h"
> +#include "basic-block.h"
> +#include "intl.h"
> +#include "ggc.h"
> +#include "timevar.h"
> +
> +#include "params.h"
> +
> +#if BUILDING_GCC_VERSION <= 4009
> +#include "pointer-set.h"
> +#else
> +#include "hash-map.h"
> +#endif
> +
> +#include "emit-rtl.h"
> +#include "debug.h"
> +#include "target.h"
> +#include "langhooks.h"
> +#include "cfgloop.h"
> +#include "cgraph.h"
> +#include "opts.h"
> +
> +#if BUILDING_GCC_VERSION == 4005
> +#include <sys/mman.h>
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4007
> +#include "tree-pretty-print.h"
> +#include "gimple-pretty-print.h"
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4006
> +#include "c-family/c-common.h"
> +#else
> +#include "c-common.h"
> +#endif
> +
> +#if BUILDING_GCC_VERSION <= 4008
> +#include "tree-flow.h"
> +#else
> +#include "tree-cfgcleanup.h"
> +#include "tree-ssa-operands.h"
> +#include "tree-into-ssa.h"
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4008
> +#include "is-a.h"
> +#endif
> +
> +#include "diagnostic.h"
> +#include "tree-dump.h"
> +#include "tree-pass.h"
> +#include "predict.h"
> +#include "ipa-utils.h"
> +
> +#if BUILDING_GCC_VERSION >= 4009
> +#include "attribs.h"
> +#include "varasm.h"
> +#include "stor-layout.h"
> +#include "internal-fn.h"
> +#include "gimple-expr.h"
> +#include "gimple-fold.h"
> +#include "context.h"
> +#include "tree-ssa-alias.h"
> +#include "tree-ssa.h"
> +#include "stringpool.h"
> +#include "tree-ssanames.h"
> +#include "print-tree.h"
> +#include "tree-eh.h"
> +#include "stmt.h"
> +#include "gimplify.h"
> +#endif
> +
> +#include "gimple.h"
> +
> +#if BUILDING_GCC_VERSION >= 4009
> +#include "tree-ssa-operands.h"
> +#include "tree-phinodes.h"
> +#include "tree-cfg.h"
> +#include "gimple-iterator.h"
> +#include "gimple-ssa.h"
> +#include "ssa-iterators.h"
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4007
> +#else
> +#endif
> +#if BUILDING_GCC_VERSION >= 5000
> +#include "builtins.h"
> +#endif
> +
> +//#include "expr.h" where are you...
> +extern rtx emit_move_insn(rtx x, rtx y);
> +
> +// missing from basic_block.h...
> +extern void debug_dominance_info(enum cdi_direction dir);
> +extern void debug_dominance_tree(enum cdi_direction dir, basic_block root);
> +
> +#if BUILDING_GCC_VERSION == 4006
> +extern void debug_gimple_stmt(gimple);
> +extern void debug_gimple_seq(gimple_seq);
> +extern void print_gimple_seq(FILE *, gimple_seq, int, int);
> +extern void print_gimple_stmt(FILE *, gimple, int, int);
> +extern void print_gimple_expr(FILE *, gimple, int, int);
> +extern void dump_gimple_stmt(pretty_printer *, gimple, int, int);
> +#endif
> +
> +#ifdef __cplusplus
> +static inline void debug_tree(const_tree t)
> +{
> + debug_tree(CONST_CAST_TREE(t));
> +}
> +
> +static inline void debug_gimple_stmt(const_gimple s)
> +{
> + debug_gimple_stmt(CONST_CAST_GIMPLE(s));
> +}
> +#else
> +#define debug_tree(t) debug_tree(CONST_CAST_TREE(t))
> +#define debug_gimple_stmt(s) debug_gimple_stmt(CONST_CAST_GIMPLE(s))
> +#endif
> +
> +#define __unused __attribute__((__unused__))
> +
> +#define DECL_NAME_POINTER(node) IDENTIFIER_POINTER(DECL_NAME(node))
> +#define DECL_NAME_LENGTH(node) IDENTIFIER_LENGTH(DECL_NAME(node))
> +#define TYPE_NAME_POINTER(node) IDENTIFIER_POINTER(TYPE_NAME(node))
> +#define TYPE_NAME_LENGTH(node) IDENTIFIER_LENGTH(TYPE_NAME(node))
> +
> +// should come from c-tree.h if only it were installed for gcc 4.5...
> +#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1(TYPE)
> +
> +#if BUILDING_GCC_VERSION == 4005
> +#define FOR_EACH_LOCAL_DECL(FUN, I, D) for (tree vars = (FUN)->local_decls, (I) = 0; vars && ((D) = TREE_VALUE(vars)); vars = TREE_CHAIN(vars), (I)++)
> +#define DECL_CHAIN(NODE) (TREE_CHAIN(DECL_MINIMAL_CHECK(NODE)))
> +#define FOR_EACH_VEC_ELT(T, V, I, P) for (I = 0; VEC_iterate(T, (V), (I), (P)); ++(I))
> +#define TODO_rebuild_cgraph_edges 0
> +#define SCOPE_FILE_SCOPE_P(EXP) (!(EXP))
> +
> +#ifndef O_BINARY
> +#define O_BINARY 0
> +#endif
> +
> +typedef struct varpool_node *varpool_node_ptr;
> +
> +static inline bool gimple_call_builtin_p(gimple stmt, enum built_in_function code)
> +{
> + tree fndecl;
> +
> + if (!is_gimple_call(stmt))
> + return false;
> + fndecl = gimple_call_fndecl(stmt);
> + if (!fndecl || DECL_BUILT_IN_CLASS(fndecl) != BUILT_IN_NORMAL)
> + return false;
> + return DECL_FUNCTION_CODE(fndecl) == code;
> +}
> +
> +static inline bool is_simple_builtin(tree decl)
> +{
> + if (decl && DECL_BUILT_IN_CLASS(decl) != BUILT_IN_NORMAL)
> + return false;
> +
> + switch (DECL_FUNCTION_CODE(decl)) {
> + /* Builtins that expand to constants. */
> + case BUILT_IN_CONSTANT_P:
> + case BUILT_IN_EXPECT:
> + case BUILT_IN_OBJECT_SIZE:
> + case BUILT_IN_UNREACHABLE:
> + /* Simple register moves or loads from stack. */
> + case BUILT_IN_RETURN_ADDRESS:
> + case BUILT_IN_EXTRACT_RETURN_ADDR:
> + case BUILT_IN_FROB_RETURN_ADDR:
> + case BUILT_IN_RETURN:
> + case BUILT_IN_AGGREGATE_INCOMING_ADDRESS:
> + case BUILT_IN_FRAME_ADDRESS:
> + case BUILT_IN_VA_END:
> + case BUILT_IN_STACK_SAVE:
> + case BUILT_IN_STACK_RESTORE:
> + /* Exception state returns or moves registers around. */
> + case BUILT_IN_EH_FILTER:
> + case BUILT_IN_EH_POINTER:
> + case BUILT_IN_EH_COPY_VALUES:
> + return true;
> +
> + default:
> + return false;
> + }
> +}
> +
> +static inline void add_local_decl(struct function *fun, tree d)
> +{
> + gcc_assert(TREE_CODE(d) == VAR_DECL);
> + fun->local_decls = tree_cons(NULL_TREE, d, fun->local_decls);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION <= 4006
> +#define ANY_RETURN_P(rtx) (GET_CODE(rtx) == RETURN)
> +#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4(EXP)
> +#define EDGE_PRESERVE 0ULL
> +#define HOST_WIDE_INT_PRINT_HEX_PURE "%" HOST_WIDE_INT_PRINT "x"
> +#define flag_fat_lto_objects true
> +
> +#define get_random_seed(noinit) ({ \
> + unsigned HOST_WIDE_INT seed; \
> + sscanf(get_random_seed(noinit), "%" HOST_WIDE_INT_PRINT "x", &seed); \
> + seed * seed; })
> +
> +#define int_const_binop(code, arg1, arg2) int_const_binop((code), (arg1), (arg2), 0)
> +
> +static inline bool gimple_clobber_p(gimple s __unused)
> +{
> + return false;
> +}
> +
> +static inline bool gimple_asm_clobbers_memory_p(const_gimple stmt)
> +{
> + unsigned i;
> +
> + for (i = 0; i < gimple_asm_nclobbers(stmt); i++) {
> + tree op = gimple_asm_clobber_op(stmt, i);
> + if (!strcmp(TREE_STRING_POINTER(TREE_VALUE(op)), "memory"))
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static inline tree builtin_decl_implicit(enum built_in_function fncode)
> +{
> + return implicit_built_in_decls[fncode];
> +}
> +
> +static inline int ipa_reverse_postorder(struct cgraph_node **order)
> +{
> + return cgraph_postorder(order);
> +}
> +
> +static inline struct cgraph_node *cgraph_get_create_node(tree decl)
> +{
> + struct cgraph_node *node = cgraph_get_node(decl);
> +
> + return node ? node : cgraph_node(decl);
> +}
> +
> +static inline bool cgraph_function_with_gimple_body_p(struct cgraph_node *node)
> +{
> + return node->analyzed && !node->thunk.thunk_p && !node->alias;
> +}
> +
> +static inline struct cgraph_node *cgraph_first_function_with_gimple_body(void)
> +{
> + struct cgraph_node *node;
> +
> + for (node = cgraph_nodes; node; node = node->next)
> + if (cgraph_function_with_gimple_body_p(node))
> + return node;
> + return NULL;
> +}
> +
> +static inline struct cgraph_node *cgraph_next_function_with_gimple_body(struct cgraph_node *node)
> +{
> + for (node = node->next; node; node = node->next)
> + if (cgraph_function_with_gimple_body_p(node))
> + return node;
> + return NULL;
> +}
> +
> +#define FOR_EACH_FUNCTION_WITH_GIMPLE_BODY(node) \
> + for ((node) = cgraph_first_function_with_gimple_body(); (node); \
> + (node) = cgraph_next_function_with_gimple_body(node))
> +
> +static inline void varpool_add_new_variable(tree decl)
> +{
> + varpool_finalize_decl(decl);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION <= 4007
> +#define FOR_EACH_FUNCTION(node) for (node = cgraph_nodes; node; node = node->next)
> +#define FOR_EACH_VARIABLE(node) for (node = varpool_nodes; node; node = node->next)
> +#define PROP_loops 0
> +#define NODE_SYMBOL(node) (node)
> +#define NODE_DECL(node) (node)->decl
> +#define INSN_LOCATION(INSN) RTL_LOCATION(INSN)
> +
> +static inline int bb_loop_depth(const_basic_block bb)
> +{
> + return bb->loop_father ? loop_depth(bb->loop_father) : 0;
> +}
> +
> +static inline bool gimple_store_p(gimple gs)
> +{
> + tree lhs = gimple_get_lhs(gs);
> + return lhs && !is_gimple_reg(lhs);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION == 4007 || BUILDING_GCC_VERSION == 4008
> +static inline struct cgraph_node *cgraph_alias_target(struct cgraph_node *n)
> +{
> + return cgraph_alias_aliased_node(n);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4007 && BUILDING_GCC_VERSION <= 4009
> +#define cgraph_create_edge(caller, callee, call_stmt, count, freq, nest) \
> + cgraph_create_edge((caller), (callee), (call_stmt), (count), (freq))
> +#define cgraph_create_edge_including_clones(caller, callee, old_call_stmt, call_stmt, count, freq, nest, reason) \
> + cgraph_create_edge_including_clones((caller), (callee), (old_call_stmt), (call_stmt), (count), (freq), (reason))
> +#endif
> +
> +#if BUILDING_GCC_VERSION <= 4008
> +#define ENTRY_BLOCK_PTR_FOR_FN(FN) ENTRY_BLOCK_PTR_FOR_FUNCTION(FN)
> +#define EXIT_BLOCK_PTR_FOR_FN(FN) EXIT_BLOCK_PTR_FOR_FUNCTION(FN)
> +#define basic_block_info_for_fn(FN) ((FN)->cfg->x_basic_block_info)
> +#define n_basic_blocks_for_fn(FN) ((FN)->cfg->x_n_basic_blocks)
> +#define n_edges_for_fn(FN) ((FN)->cfg->x_n_edges)
> +#define last_basic_block_for_fn(FN) ((FN)->cfg->x_last_basic_block)
> +#define label_to_block_map_for_fn(FN) ((FN)->cfg->x_label_to_block_map)
> +#define profile_status_for_fn(FN) ((FN)->cfg->x_profile_status)
> +#define BASIC_BLOCK_FOR_FN(FN, N) BASIC_BLOCK_FOR_FUNCTION((FN), (N))
> +#define NODE_IMPLICIT_ALIAS(node) (node)->same_body_alias
> +#define VAR_P(NODE) (TREE_CODE(NODE) == VAR_DECL)
> +
> +static inline bool tree_fits_shwi_p(const_tree t)
> +{
> + if (t == NULL_TREE || TREE_CODE(t) != INTEGER_CST)
> + return false;
> +
> + if (TREE_INT_CST_HIGH(t) == 0 && (HOST_WIDE_INT)TREE_INT_CST_LOW(t) >= 0)
> + return true;
> +
> + if (TREE_INT_CST_HIGH(t) == -1 && (HOST_WIDE_INT)TREE_INT_CST_LOW(t) < 0 && !TYPE_UNSIGNED(TREE_TYPE(t)))
> + return true;
> +
> + return false;
> +}
> +
> +static inline bool tree_fits_uhwi_p(const_tree t)
> +{
> + if (t == NULL_TREE || TREE_CODE(t) != INTEGER_CST)
> + return false;
> +
> + return TREE_INT_CST_HIGH(t) == 0;
> +}
> +
> +static inline HOST_WIDE_INT tree_to_shwi(const_tree t)
> +{
> + gcc_assert(tree_fits_shwi_p(t));
> + return TREE_INT_CST_LOW(t);
> +}
> +
> +static inline unsigned HOST_WIDE_INT tree_to_uhwi(const_tree t)
> +{
> + gcc_assert(tree_fits_uhwi_p(t));
> + return TREE_INT_CST_LOW(t);
> +}
> +
> +static inline const char *get_tree_code_name(enum tree_code code)
> +{
> + gcc_assert(code < MAX_TREE_CODES);
> + return tree_code_name[code];
> +}
> +
> +#define ipa_remove_stmt_references(cnode, stmt)
> +
> +typedef union gimple_statement_d gasm;
> +typedef union gimple_statement_d gassign;
> +typedef union gimple_statement_d gcall;
> +typedef union gimple_statement_d gcond;
> +typedef union gimple_statement_d gdebug;
> +typedef union gimple_statement_d gphi;
> +typedef union gimple_statement_d greturn;
> +
> +static inline gasm *as_a_gasm(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gasm *as_a_const_gasm(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gassign *as_a_gassign(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gassign *as_a_const_gassign(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gcall *as_a_gcall(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gcall *as_a_const_gcall(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gcond *as_a_gcond(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gcond *as_a_const_gcond(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gdebug *as_a_gdebug(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gdebug *as_a_const_gdebug(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gphi *as_a_gphi(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gphi *as_a_const_gphi(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline greturn *as_a_greturn(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const greturn *as_a_const_greturn(const_gimple stmt)
> +{
> + return stmt;
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION == 4008
> +#define NODE_SYMBOL(node) (&(node)->symbol)
> +#define NODE_DECL(node) (node)->symbol.decl
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4008
> +#define add_referenced_var(var)
> +#define mark_sym_for_renaming(var)
> +#define varpool_mark_needed_node(node)
> +#define create_var_ann(var)
> +#define TODO_dump_func 0
> +#define TODO_dump_cgraph 0
> +#endif
> +
> +#if BUILDING_GCC_VERSION <= 4009
> +#define TODO_verify_il 0
> +#define AVAIL_INTERPOSABLE AVAIL_OVERWRITABLE
> +
> +#define section_name_prefix LTO_SECTION_NAME_PREFIX
> +#define fatal_error(loc, gmsgid, ...) fatal_error((gmsgid), __VA_ARGS__)
> +
> +typedef struct rtx_def rtx_insn;
> +
> +static inline void set_decl_section_name(tree node, const char *value)
> +{
> + DECL_SECTION_NAME(node) = build_string(strlen(value) + 1, value);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION == 4009
> +typedef struct gimple_statement_asm gasm;
> +typedef struct gimple_statement_base gassign;
> +typedef struct gimple_statement_call gcall;
> +typedef struct gimple_statement_base gcond;
> +typedef struct gimple_statement_base gdebug;
> +typedef struct gimple_statement_phi gphi;
> +typedef struct gimple_statement_base greturn;
> +
> +static inline gasm *as_a_gasm(gimple stmt)
> +{
> + return as_a<gasm>(stmt);
> +}
> +
> +static inline const gasm *as_a_const_gasm(const_gimple stmt)
> +{
> + return as_a<const gasm>(stmt);
> +}
> +
> +static inline gassign *as_a_gassign(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gassign *as_a_const_gassign(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gcall *as_a_gcall(gimple stmt)
> +{
> + return as_a<gcall>(stmt);
> +}
> +
> +static inline const gcall *as_a_const_gcall(const_gimple stmt)
> +{
> + return as_a<const gcall>(stmt);
> +}
> +
> +static inline gcond *as_a_gcond(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gcond *as_a_const_gcond(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gdebug *as_a_gdebug(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const gdebug *as_a_const_gdebug(const_gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline gphi *as_a_gphi(gimple stmt)
> +{
> + return as_a<gphi>(stmt);
> +}
> +
> +static inline const gphi *as_a_const_gphi(const_gimple stmt)
> +{
> + return as_a<const gphi>(stmt);
> +}
> +
> +static inline greturn *as_a_greturn(gimple stmt)
> +{
> + return stmt;
> +}
> +
> +static inline const greturn *as_a_const_greturn(const_gimple stmt)
> +{
> + return stmt;
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 4009
> +#define TODO_ggc_collect 0
> +#define NODE_SYMBOL(node) (node)
> +#define NODE_DECL(node) (node)->decl
> +#define cgraph_node_name(node) (node)->name()
> +#define NODE_IMPLICIT_ALIAS(node) (node)->cpp_implicit_alias
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 5000 && BUILDING_GCC_VERSION < 6000
> +// gimple related
> +template <>
> +template <>
> +inline bool is_a_helper<const gassign *>::test(const_gimple gs)
> +{
> + return gs->code == GIMPLE_ASSIGN;
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 5000
> +#define TODO_verify_ssa TODO_verify_il
> +#define TODO_verify_flow TODO_verify_il
> +#define TODO_verify_stmts TODO_verify_il
> +#define TODO_verify_rtl_sharing TODO_verify_il
> +
> +#define INSN_DELETED_P(insn) (insn)->deleted()
> +
> +// symtab/cgraph related
> +#define debug_cgraph_node(node) (node)->debug()
> +#define cgraph_get_node(decl) cgraph_node::get(decl)
> +#define cgraph_get_create_node(decl) cgraph_node::get_create(decl)
> +#define cgraph_n_nodes symtab->cgraph_count
> +#define cgraph_max_uid symtab->cgraph_max_uid
> +#define varpool_get_node(decl) varpool_node::get(decl)
> +
> +#define cgraph_create_edge(caller, callee, call_stmt, count, freq, nest) \
> + (caller)->create_edge((callee), (call_stmt), (count), (freq))
> +#define cgraph_create_edge_including_clones(caller, callee, old_call_stmt, call_stmt, count, freq, nest, reason) \
> + (caller)->create_edge_including_clones((callee), (old_call_stmt), (call_stmt), (count), (freq), (reason))
> +
> +typedef struct cgraph_node *cgraph_node_ptr;
> +typedef struct cgraph_edge *cgraph_edge_p;
> +typedef struct varpool_node *varpool_node_ptr;
> +
> +static inline void change_decl_assembler_name(tree decl, tree name)
> +{
> + symtab->change_decl_assembler_name(decl, name);
> +}
> +
> +static inline void varpool_finalize_decl(tree decl)
> +{
> + varpool_node::finalize_decl(decl);
> +}
> +
> +static inline void varpool_add_new_variable(tree decl)
> +{
> + varpool_node::add(decl);
> +}
> +
> +static inline unsigned int rebuild_cgraph_edges(void)
> +{
> + return cgraph_edge::rebuild_edges();
> +}
> +
> +static inline cgraph_node_ptr cgraph_function_node(cgraph_node_ptr node, enum availability *availability)
> +{
> + return node->function_symbol(availability);
> +}
> +
> +static inline cgraph_node_ptr cgraph_function_or_thunk_node(cgraph_node_ptr node, enum availability *availability = NULL)
> +{
> + return node->ultimate_alias_target(availability);
> +}
> +
> +static inline bool cgraph_only_called_directly_p(cgraph_node_ptr node)
> +{
> + return node->only_called_directly_p();
> +}
> +
> +static inline enum availability cgraph_function_body_availability(cgraph_node_ptr node)
> +{
> + return node->get_availability();
> +}
> +
> +static inline cgraph_node_ptr cgraph_alias_target(cgraph_node_ptr node)
> +{
> + return node->get_alias_target();
> +}
> +
> +static inline struct cgraph_node_hook_list *cgraph_add_function_insertion_hook(cgraph_node_hook hook, void *data)
> +{
> + return symtab->add_cgraph_insertion_hook(hook, data);
> +}
> +
> +static inline void cgraph_remove_function_insertion_hook(struct cgraph_node_hook_list *entry)
> +{
> + symtab->remove_cgraph_insertion_hook(entry);
> +}
> +
> +static inline struct cgraph_node_hook_list *cgraph_add_node_removal_hook(cgraph_node_hook hook, void *data)
> +{
> + return symtab->add_cgraph_removal_hook(hook, data);
> +}
> +
> +static inline void cgraph_remove_node_removal_hook(struct cgraph_node_hook_list *entry)
> +{
> + symtab->remove_cgraph_removal_hook(entry);
> +}
> +
> +static inline struct cgraph_2node_hook_list *cgraph_add_node_duplication_hook(cgraph_2node_hook hook, void *data)
> +{
> + return symtab->add_cgraph_duplication_hook(hook, data);
> +}
> +
> +static inline void cgraph_remove_node_duplication_hook(struct cgraph_2node_hook_list *entry)
> +{
> + symtab->remove_cgraph_duplication_hook(entry);
> +}
> +
> +#if BUILDING_GCC_VERSION >= 6000
> +typedef gimple *gimple_ptr;
> +typedef const gimple *const_gimple;
> +#define gimple gimple_ptr
> +#endif
> +
> +// gimple related
> +static inline gimple gimple_build_assign_with_ops(enum tree_code subcode, tree lhs, tree op1, tree op2 MEM_STAT_DECL)
> +{
> + return gimple_build_assign(lhs, subcode, op1, op2 PASS_MEM_STAT);
> +}
> +
> +template <>
> +template <>
> +inline bool is_a_helper<const greturn *>::test(const_gimple gs)
> +{
> + return gs->code == GIMPLE_RETURN;
> +}
> +
> +static inline gasm *as_a_gasm(gimple stmt)
> +{
> + return as_a<gasm *>(stmt);
> +}
> +
> +static inline const gasm *as_a_const_gasm(const_gimple stmt)
> +{
> + return as_a<const gasm *>(stmt);
> +}
> +
> +static inline gassign *as_a_gassign(gimple stmt)
> +{
> + return as_a<gassign *>(stmt);
> +}
> +
> +static inline const gassign *as_a_const_gassign(const_gimple stmt)
> +{
> + return as_a<const gassign *>(stmt);
> +}
> +
> +static inline gcall *as_a_gcall(gimple stmt)
> +{
> + return as_a<gcall *>(stmt);
> +}
> +
> +static inline const gcall *as_a_const_gcall(const_gimple stmt)
> +{
> + return as_a<const gcall *>(stmt);
> +}
> +
> +static inline gphi *as_a_gphi(gimple stmt)
> +{
> + return as_a<gphi *>(stmt);
> +}
> +
> +static inline const gphi *as_a_const_gphi(const_gimple stmt)
> +{
> + return as_a<const gphi *>(stmt);
> +}
> +
> +static inline greturn *as_a_greturn(gimple stmt)
> +{
> + return as_a<greturn *>(stmt);
> +}
> +
> +static inline const greturn *as_a_const_greturn(const_gimple stmt)
> +{
> + return as_a<const greturn *>(stmt);
> +}
> +
> +// IPA/LTO related
> +#define ipa_ref_list_referring_iterate(L,I,P) (L)->referring.iterate((I), &(P))
> +#define ipa_ref_list_reference_iterate(L,I,P) (L)->reference.iterate((I), &(P))
> +
> +static inline cgraph_node_ptr ipa_ref_referring_node(struct ipa_ref *ref)
> +{
> + return dyn_cast<cgraph_node_ptr>(ref->referring);
> +}
> +
> +static inline void ipa_remove_stmt_references(symtab_node *referring_node, gimple stmt)
> +{
> + referring_node->remove_stmt_references(stmt);
> +}
> +#endif
> +
> +#if BUILDING_GCC_VERSION < 6000
> +#define get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, preversep, pvolatilep, keep_aligning) get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, pvolatilep, keep_aligning)
> +#define gen_rtx_set(ARG0, ARG1) gen_rtx_SET(VOIDmode, (ARG0), (ARG1))
> +#endif
> +
> +#if BUILDING_GCC_VERSION >= 6000
> +#define gen_rtx_set(ARG0, ARG1) gen_rtx_SET((ARG0), (ARG1))
> +#endif
> +
> +#endif
> --
> 2.4.1
>
-Kees
--
Kees Cook
Chrome OS & Brillo Security
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