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[RFC][PATCH 2/X][libsanitizer] Tie the hwasan library into our build system

From: Matthew Malcomson <Matthew dot Malcomson at arm dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: "mliska at suse dot cz" <mliska at suse dot cz>, "dodji at redhat dot com" <dodji at redhat dot com>, nd <nd at arm dot com>, "kcc at google dot com" <kcc at google dot com>, "jakub at redhat dot com" <jakub at redhat dot com>, "dvyukov at google dot com" <dvyukov at google dot com>
Date: Fri, 6 Sep 2019 14:46:06 +0000
Subject: [RFC][PATCH 2/X][libsanitizer] Tie the hwasan library into our build system
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References: <156778058239.16148.17480879484406897649.scripted-patch-series@arm.com>
This patch does tries to tie libhwasan into the GCC build system in the
same way that the other sanitizer runtime libraries are handled.

libsanitizer/ChangeLog:

2019-09-06  Matthew Malcomson  <matthew.malcomson@arm.com>

	* Makefile.am:  Build libhwasan.
	* Makefile.in:  Build libhwasan.
	* asan/Makefile.in:  Build libhwasan.
	* configure:  Build libhwasan.
	* configure.ac:  Build libhwasan.
	* hwasan/Makefile.am: New file.
	* hwasan/Makefile.in: New file.
	* hwasan/libtool-version: New file.
	* interception/Makefile.in: Build libhwasan.
	* libbacktrace/Makefile.in: Build libhwasan.
	* libsanitizer.spec.in: Build libhwasan.
	* lsan/Makefile.in: Build libhwasan.
	* merge.sh: Build libhwasan.
	* sanitizer_common/Makefile.in: Build libhwasan.
	* tsan/Makefile.in: Build libhwasan.
	* ubsan/Makefile.in: Build libhwasan.



###############     Attachment also inlined for ease of reply    ###############


diff --git a/libsanitizer/Makefile.am b/libsanitizer/Makefile.am
index 65ed1e712378ef453f820f86c4d3221f9dee5f2c..2a7e8e1debe838719db0f0fad218b2543cc3111b 100644
--- a/libsanitizer/Makefile.am
+++ b/libsanitizer/Makefile.am
@@ -14,11 +14,12 @@ endif
 if LIBBACKTRACE_SUPPORTED
 SUBDIRS += libbacktrace
 endif
-SUBDIRS += lsan asan ubsan
+SUBDIRS += lsan asan ubsan hwasan
 nodist_saninclude_HEADERS += \
   include/sanitizer/lsan_interface.h \
   include/sanitizer/asan_interface.h \
-  include/sanitizer/tsan_interface.h
+  include/sanitizer/tsan_interface.h \
+  include/sanitizer/hwasan_interface.h
 if TSAN_SUPPORTED
 SUBDIRS += tsan
 endif
diff --git a/libsanitizer/Makefile.in b/libsanitizer/Makefile.in
index 0d789b3a59d21ea2e5a23057ca3afe15425feec4..404ddcedde5428e0bc6d8ebc5f6568f99741ce2a 100644
--- a/libsanitizer/Makefile.in
+++ b/libsanitizer/Makefile.in
@@ -92,7 +92,8 @@ target_triplet = @target@
 @SANITIZER_SUPPORTED_TRUE@am__append_1 = include/sanitizer/common_interface_defs.h \
 @SANITIZER_SUPPORTED_TRUE@	include/sanitizer/lsan_interface.h \
 @SANITIZER_SUPPORTED_TRUE@	include/sanitizer/asan_interface.h \
-@SANITIZER_SUPPORTED_TRUE@	include/sanitizer/tsan_interface.h
+@SANITIZER_SUPPORTED_TRUE@	include/sanitizer/tsan_interface.h \
+@SANITIZER_SUPPORTED_TRUE@	include/sanitizer/hwasan_interface.h
 @SANITIZER_SUPPORTED_TRUE@@USING_MAC_INTERPOSE_FALSE@am__append_2 = interception
 @LIBBACKTRACE_SUPPORTED_TRUE@@SANITIZER_SUPPORTED_TRUE@am__append_3 = libbacktrace
 @SANITIZER_SUPPORTED_TRUE@@TSAN_SUPPORTED_TRUE@am__append_4 = tsan
@@ -206,7 +207,7 @@ ETAGS = etags
 CTAGS = ctags
 CSCOPE = cscope
 DIST_SUBDIRS = sanitizer_common interception libbacktrace lsan asan \
-	ubsan tsan
+	ubsan hwasan tsan
 ACLOCAL = @ACLOCAL@
 ALLOC_FILE = @ALLOC_FILE@
 AMTAR = @AMTAR@
@@ -328,6 +329,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -341,6 +343,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
@@ -361,7 +364,7 @@ sanincludedir = $(libdir)/gcc/$(target_alias)/$(gcc_version)/include/sanitizer
 nodist_saninclude_HEADERS = $(am__append_1)
 @SANITIZER_SUPPORTED_TRUE@SUBDIRS = sanitizer_common $(am__append_2) \
 @SANITIZER_SUPPORTED_TRUE@	$(am__append_3) lsan asan ubsan \
-@SANITIZER_SUPPORTED_TRUE@	$(am__append_4)
+@SANITIZER_SUPPORTED_TRUE@	hwasan $(am__append_4)
 gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
 
 # Work around what appears to be a GNU make bug handling MAKEFLAGS
diff --git a/libsanitizer/asan/Makefile.in b/libsanitizer/asan/Makefile.in
index 926ff7d7491c9713a43b12bf575e023368526767..d61da1c5567e400a9b9b614f1232f3e9fa10e06a 100644
--- a/libsanitizer/asan/Makefile.in
+++ b/libsanitizer/asan/Makefile.in
@@ -352,6 +352,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -365,6 +366,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/configure b/libsanitizer/configure
index 2d25147adbaaa3578388cf75763e6178302aa3dc..7a4779831bc871c8ed552ed9aee1249a6a25f21a 100755
--- a/libsanitizer/configure
+++ b/libsanitizer/configure
@@ -657,6 +657,7 @@ USING_MAC_INTERPOSE_TRUE
 link_liblsan
 link_libubsan
 link_libtsan
+link_libhwasan
 link_libasan
 LSAN_SUPPORTED_FALSE
 LSAN_SUPPORTED_TRUE
@@ -779,6 +780,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -868,6 +870,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1120,6 +1123,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1257,7 +1269,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1410,6 +1422,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -12329,7 +12342,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12332 "configure"
+#line 12345 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12435,7 +12448,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12438 "configure"
+#line 12451 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -15906,6 +15919,10 @@ fi
 link_libasan=$link_sanitizer_common
 
 
+# Set up the set of additional libraries that we need to link against for libhwasan.
+link_libhwasan=$link_sanitizer_common
+
+
 # Set up the set of additional libraries that we need to link against for libtsan.
 link_libtsan=$link_sanitizer_common
 
@@ -16776,7 +16793,7 @@ ac_config_files="$ac_config_files Makefile libsanitizer.spec libbacktrace/backtr
 ac_config_headers="$ac_config_headers config.h"
 
 
-ac_config_files="$ac_config_files interception/Makefile sanitizer_common/Makefile libbacktrace/Makefile lsan/Makefile asan/Makefile ubsan/Makefile"
+ac_config_files="$ac_config_files interception/Makefile sanitizer_common/Makefile libbacktrace/Makefile lsan/Makefile asan/Makefile hwasan/Makefile ubsan/Makefile"
 
 
 if test "x$TSAN_SUPPORTED" = "xyes"; then
@@ -18053,6 +18070,7 @@ do
     "libbacktrace/Makefile") CONFIG_FILES="$CONFIG_FILES libbacktrace/Makefile" ;;
     "lsan/Makefile") CONFIG_FILES="$CONFIG_FILES lsan/Makefile" ;;
     "asan/Makefile") CONFIG_FILES="$CONFIG_FILES asan/Makefile" ;;
+    "hwasan/Makefile") CONFIG_FILES="$CONFIG_FILES hwasan/Makefile" ;;
     "ubsan/Makefile") CONFIG_FILES="$CONFIG_FILES ubsan/Makefile" ;;
     "tsan/Makefile") CONFIG_FILES="$CONFIG_FILES tsan/Makefile" ;;
 
@@ -19988,6 +20006,17 @@ _EOF
    . ${multi_basedir}/config-ml.in
    { ml_norecursion=; unset ml_norecursion;}
  ;;
+    "hwasan/Makefile":F) cat > vpsed$$ << \_EOF
+s!`test -f '$<' || echo '$(srcdir)/'`!!
+_EOF
+   sed -f vpsed$$ $ac_file > tmp$$
+   mv tmp$$ $ac_file
+   rm vpsed$$
+   echo 'MULTISUBDIR =' >> $ac_file
+   ml_norecursion=yes
+   . ${multi_basedir}/config-ml.in
+   { ml_norecursion=; unset ml_norecursion;}
+ ;;
     "ubsan/Makefile":F) cat > vpsed$$ << \_EOF
 s!`test -f '$<' || echo '$(srcdir)/'`!!
 _EOF
diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index 8aac33cb5c980db77e31e8d799ab5a12f3e3a404..02c0c235171e4c8249821c5db91414f8e4bfb3ee 100644
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -111,6 +111,10 @@ AC_CHECK_LIB(dl, dlsym,
 link_libasan=$link_sanitizer_common
 AC_SUBST(link_libasan)
 
+# Set up the set of additional libraries that we need to link against for libhwasan.
+link_libhwasan=$link_sanitizer_common
+AC_SUBST(link_libhwasan)
+
 # Set up the set of additional libraries that we need to link against for libtsan.
 link_libtsan=$link_sanitizer_common
 AC_SUBST(link_libtsan)
@@ -339,7 +343,7 @@ AH_BOTTOM([#include "libbacktrace/backtrace-rename.h"])
 AC_CONFIG_FILES([Makefile libsanitizer.spec libbacktrace/backtrace-supported.h])
 AC_CONFIG_HEADER(config.h)
 
-AC_CONFIG_FILES(AC_FOREACH([DIR], [interception sanitizer_common libbacktrace lsan asan ubsan], [DIR/Makefile ]),
+AC_CONFIG_FILES(AC_FOREACH([DIR], [interception sanitizer_common libbacktrace lsan asan hwasan ubsan], [DIR/Makefile ]),
   [cat > vpsed$$ << \_EOF
 s!`test -f '$<' || echo '$(srcdir)/'`!!
 _EOF
diff --git a/libsanitizer/hwasan/Makefile.am b/libsanitizer/hwasan/Makefile.am
new file mode 100644
index 0000000000000000000000000000000000000000..3754f435ce0342f5c8051f6ea44273bb811c9659
--- /dev/null
+++ b/libsanitizer/hwasan/Makefile.am
@@ -0,0 +1,81 @@
+AM_CPPFLAGS = -I $(top_srcdir)/include -I $(top_srcdir)
+ 
+# May be used by toolexeclibdir.
+gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
+
+DEFS = -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DCAN_SANITIZE_UB=0
+AM_CXXFLAGS = -Wall -W -Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long  -fPIC -fno-builtin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -fno-ipa-icf
+AM_CXXFLAGS += $(LIBSTDCXX_RAW_CXX_CXXFLAGS)
+AM_CXXFLAGS += -std=gnu++11
+AM_CXXFLAGS += $(EXTRA_CXXFLAGS)
+ACLOCAL_AMFLAGS = -I $(top_srcdir) -I $(top_srcdir)/config
+
+toolexeclib_LTLIBRARIES = libhwasan.la
+
+hwasan_files = \
+	       hwasan_allocator.cc \
+	       hwasan.cc \
+	       hwasan_dynamic_shadow.cc \
+	       hwasan_interceptors.cc \
+	       hwasan_linux.cc \
+	       hwasan_new_delete.cc \
+	       hwasan_poisoning.cc \
+	       hwasan_report.cc \
+	       hwasan_thread.cc \
+	       hwasan_thread_list.cc
+
+libhwasan_la_SOURCES = $(hwasan_files)
+libhwasan_la_LIBADD = $(top_builddir)/sanitizer_common/libsanitizer_common.la
+if !USING_MAC_INTERPOSE
+libhwasan_la_LIBADD += $(top_builddir)/interception/libinterception.la
+endif
+if LIBBACKTRACE_SUPPORTED
+libhwasan_la_LIBADD += $(top_builddir)/libbacktrace/libsanitizer_libbacktrace.la
+endif
+libhwasan_la_LIBADD += $(LIBSTDCXX_RAW_CXX_LDFLAGS)
+
+libhwasan_la_LDFLAGS = -version-info `grep -v '^\#' $(srcdir)/libtool-version` $(link_libhwasan)
+
+# Work around what appears to be a GNU make bug handling MAKEFLAGS
+# values defined in terms of make variables, as is the case for CC and
+# friends when we are called from the top level Makefile.
+AM_MAKEFLAGS = \
+	"AR_FLAGS=$(AR_FLAGS)" \
+	"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
+	"CFLAGS=$(CFLAGS)" \
+	"CXXFLAGS=$(CXXFLAGS)" \
+	"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
+	"CFLAGS_FOR_TARGET=$(CFLAGS_FOR_TARGET)" \
+	"INSTALL=$(INSTALL)" \
+	"INSTALL_DATA=$(INSTALL_DATA)" \
+	"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
+	"INSTALL_SCRIPT=$(INSTALL_SCRIPT)" \
+	"JC1FLAGS=$(JC1FLAGS)" \
+	"LDFLAGS=$(LDFLAGS)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"LIBCFLAGS_FOR_TARGET=$(LIBCFLAGS_FOR_TARGET)" \
+	"MAKE=$(MAKE)" \
+	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+	"PICFLAG=$(PICFLAG)" \
+	"PICFLAG_FOR_TARGET=$(PICFLAG_FOR_TARGET)" \
+	"SHELL=$(SHELL)" \
+	"RUNTESTFLAGS=$(RUNTESTFLAGS)" \
+	"exec_prefix=$(exec_prefix)" \
+	"infodir=$(infodir)" \
+	"libdir=$(libdir)" \
+	"prefix=$(prefix)" \
+	"includedir=$(includedir)" \
+	"AR=$(AR)" \
+	"AS=$(AS)" \
+	"LD=$(LD)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"NM=$(NM)" \
+	"PICFLAG=$(PICFLAG)" \
+	"RANLIB=$(RANLIB)" \
+	"DESTDIR=$(DESTDIR)"
+
+MAKEOVERRIDES=
+
+## ################################################################
+
+
diff --git a/libsanitizer/hwasan/Makefile.in b/libsanitizer/hwasan/Makefile.in
new file mode 100644
index 0000000000000000000000000000000000000000..f89bc9e440502fcf8072d67aa61a4b63cd490b40
--- /dev/null
+++ b/libsanitizer/hwasan/Makefile.in
@@ -0,0 +1,736 @@
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+target_triplet = @target@
+@USING_MAC_INTERPOSE_FALSE@am__append_1 = $(top_builddir)/interception/libinterception.la
+@LIBBACKTRACE_SUPPORTED_TRUE@am__append_2 = $(top_builddir)/libbacktrace/libsanitizer_libbacktrace.la
+subdir = hwasan
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
+	$(top_srcdir)/../config/depstand.m4 \
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+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(LTCXXCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+	for dir in "$(DESTDIR)$(toolexeclibdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-toolexeclibLTLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-toolexeclibLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-toolexeclibLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-toolexeclibLTLIBRARIES cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags dvi dvi-am html html-am info \
+	info-am install install-am install-data install-data-am \
+	install-dvi install-dvi-am install-exec install-exec-am \
+	install-html install-html-am install-info install-info-am \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip install-toolexeclibLTLIBRARIES \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am \
+	uninstall-toolexeclibLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libsanitizer/hwasan/libtool-version b/libsanitizer/hwasan/libtool-version
new file mode 100644
index 0000000000000000000000000000000000000000..204fdd2d8e5fe21a5a9f9e23d6a6cf17d353362a
--- /dev/null
+++ b/libsanitizer/hwasan/libtool-version
@@ -0,0 +1,6 @@
+# This file is used to maintain libtool version info for libmudflap.  See
+# the libtool manual to understand the meaning of the fields.  This is
+# a separate file so that version updates don't involve re-running
+# automake.
+# CURRENT:REVISION:AGE
+0:0:0
diff --git a/libsanitizer/interception/Makefile.in b/libsanitizer/interception/Makefile.in
index 08a33e0e567b808a9390589b27469f13ab645878..f1fe41710a22763416452384f4bcbb3b14c4916e 100644
--- a/libsanitizer/interception/Makefile.in
+++ b/libsanitizer/interception/Makefile.in
@@ -300,6 +300,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -313,6 +314,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/libbacktrace/Makefile.in b/libsanitizer/libbacktrace/Makefile.in
index f0e190a81d82ddc86a3e39a5dc41e864190582c0..ba1bcc4b1a6d1ac27e76762219030b39c6242851 100644
--- a/libsanitizer/libbacktrace/Makefile.in
+++ b/libsanitizer/libbacktrace/Makefile.in
@@ -350,6 +350,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -363,6 +364,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/libsanitizer.spec.in b/libsanitizer/libsanitizer.spec.in
index a4fa87d8dfc51549b0f932b31a610db1a2e86c29..70a33574d7b1d494c4875cfc41f29606bde2172e 100644
--- a/libsanitizer/libsanitizer.spec.in
+++ b/libsanitizer/libsanitizer.spec.in
@@ -3,6 +3,8 @@
 
 *link_libasan: @link_libasan@
 
+*link_libhwasan: @link_libhwasan@
+
 *link_libtsan: @link_libtsan@
 
 *link_libubsan: @link_libubsan@
diff --git a/libsanitizer/lsan/Makefile.in b/libsanitizer/lsan/Makefile.in
index a11baed30c85327f43f05888017bc5a028c92b1b..68c40849ecb9a4eb8e95035386b37810ca443f74 100644
--- a/libsanitizer/lsan/Makefile.in
+++ b/libsanitizer/lsan/Makefile.in
@@ -345,6 +345,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -358,6 +359,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/merge.sh b/libsanitizer/merge.sh
index fa340bedbac89871f9bb24e49218d7d8cf9d8da7..383079965fec34fcd1e6310c832ade078b51820d 100755
--- a/libsanitizer/merge.sh
+++ b/libsanitizer/merge.sh
@@ -69,6 +69,7 @@ CUR_REV=$(get_current_rev)
 echo Current upstream revision: $CUR_REV
 merge include/sanitizer include/sanitizer
 merge lib/asan asan
+merge lib/hwasan hwasan
 merge lib/lsan lsan
 merge lib/tsan/rtl tsan
 merge lib/sanitizer_common sanitizer_common
diff --git a/libsanitizer/sanitizer_common/Makefile.in b/libsanitizer/sanitizer_common/Makefile.in
index d33d2227938b6d261c0f1c3eaaa06d2c075863f0..2b8f7db1f5e16e8b999f2e68330c9f90d5a0345c 100644
--- a/libsanitizer/sanitizer_common/Makefile.in
+++ b/libsanitizer/sanitizer_common/Makefile.in
@@ -365,6 +365,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -378,6 +379,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/tsan/Makefile.in b/libsanitizer/tsan/Makefile.in
index cb4f0f9fef07e075c78af7c305cfbb165eea2774..327134e7ce75eb74d3847ea8fa7bca35c4380634 100644
--- a/libsanitizer/tsan/Makefile.in
+++ b/libsanitizer/tsan/Makefile.in
@@ -375,6 +375,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -388,6 +389,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
diff --git a/libsanitizer/ubsan/Makefile.in b/libsanitizer/ubsan/Makefile.in
index b1ba31a50e6b030ddc8db8489d60b5383bb72c6e..fbda21c705bbaf2e94a1aa87a1b5296f146a8686 100644
--- a/libsanitizer/ubsan/Makefile.in
+++ b/libsanitizer/ubsan/Makefile.in
@@ -339,6 +339,7 @@ install_sh = @install_sh@
 libdir = @libdir@
 libexecdir = @libexecdir@
 link_libasan = @link_libasan@
+link_libhwasan = @link_libhwasan@
 link_liblsan = @link_liblsan@
 link_libtsan = @link_libtsan@
 link_libubsan = @link_libubsan@
@@ -352,6 +353,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
Attachment: hwasan-implementation01.patch.gz
Description: hwasan-implementation01.patch.gz
References:
- [Patch 0/X] [WIP][RFC][libsanitizer] Introduce HWASAN to GCC
  - From: Matthew Malcomson
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