new file mode 100644
@@ -0,0 +1,8 @@
+# This option enables -fsanitize=hwaddress for stage2 and stage3.
+
+STAGE2_CFLAGS += -fsanitize=hwaddress
+STAGE3_CFLAGS += -fsanitize=hwaddress
+POSTSTAGE1_LDFLAGS += -fsanitize=hwaddress -static-libhwasan \
+ -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ \
+ -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/ \
+ -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/.libs
@@ -7270,7 +7270,7 @@ fi
# or bootstrap-ubsan, bootstrap it.
if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
case "$BUILD_CONFIG" in
- *bootstrap-asan* | *bootstrap-ubsan* )
+ *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* )
bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
bootstrap_fixincludes=yes
;;
@@ -2775,7 +2775,7 @@ fi
# or bootstrap-ubsan, bootstrap it.
if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
case "$BUILD_CONFIG" in
- *bootstrap-asan* | *bootstrap-ubsan* )
+ *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* )
bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
bootstrap_fixincludes=yes
;;
@@ -2676,6 +2676,12 @@ Some examples of build configurations designed for developers of GCC are:
@item @samp{bootstrap-asan}
Compiles GCC itself using Address Sanitization in order to catch invalid memory
accesses within the GCC code.
+
+@item @samp{bootstrap-hwasan}
+Compiles GCC itself using HWAddress Sanitization in order to catch invalid
+memory accesses within the GCC code. This option is only available on AArch64
+targets with a very recent linux kernel (5.4 or later).
+
@end table
@section Building a cross compiler
@@ -5261,6 +5261,7 @@ fi
NOASANFLAG=
case " ${CFLAGS} " in
*\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
+ *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;;
esac
@@ -240,6 +240,7 @@ AC_SUBST(PICFLAG)
NOASANFLAG=
case " ${CFLAGS} " in
*\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
+ *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;;
esac
AC_SUBST(NOASANFLAG)
@@ -11,8 +11,8 @@ AM_CPPFLAGS = -I$(top_srcdir)/../include $(DEFS)
AM_CFLAGS = @ac_lto_plugin_warn_cflags@
AM_LDFLAGS = @ac_lto_plugin_ldflags@
AM_LIBTOOLFLAGS = --tag=disable-static
-override CFLAGS := $(filter-out -fsanitize=address,$(CFLAGS))
-override LDFLAGS := $(filter-out -fsanitize=address,$(LDFLAGS))
+override CFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(CFLAGS))
+override LDFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(LDFLAGS))
libexecsub_LTLIBRARIES = liblto_plugin.la
gcc_build_dir = @gcc_build_dir@
@@ -672,8 +672,8 @@ uninstall-am: uninstall-libexecsubLTLIBRARIES
.PRECIOUS: Makefile
-override CFLAGS := $(filter-out -fsanitize=address,$(CFLAGS))
-override LDFLAGS := $(filter-out -fsanitize=address,$(LDFLAGS))
+override CFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(CFLAGS))
+override LDFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(LDFLAGS))
all-local: $(in_gcc_libs)
Updated to include documentation ChangeLog and apply cleanly on the bootstrap-asan documentation I mentioned in a different email. This is an analogous option to --bootstrap-asan to configure. It allows bootstrapping GCC using HWASAN. For the same reasons as for ASAN we have to avoid using the HWASAN sanitizer when compiling libiberty and the lto-plugin. Also add a function to query whether -fsanitize=hwaddress has been passed. ChangeLog: 2019-08-29 Matthew Malcomson <matthew.malcomson@arm.com> * configure: Regenerate. * configure.ac: Add --bootstrap-hwasan option. config/ChangeLog: 2019-12-12 Matthew Malcomson <matthew.malcomson@arm.com> * bootstrap-hwasan.mk: New file. gcc/ChangeLog: 2019-12-12 Matthew Malcomson <matthew.malcomson@arm.com> * doc/install.texi: Document new option. libiberty/ChangeLog: 2019-12-12 Matthew Malcomson <matthew.malcomson@arm.com> * configure: Regenerate. * configure.ac: Avoid using sanitizer. lto-plugin/ChangeLog: 2019-12-12 Matthew Malcomson <matthew.malcomson@arm.com> * Makefile.am: Avoid using sanitizer. * Makefile.in: Regenerate. ############### Attachment also inlined for ease of reply ############### diff --git a/config/bootstrap-hwasan.mk b/config/bootstrap-hwasan.mk new file mode 100644 index 0000000000000000000000000000000000000000..4f60bed3fd6e98b47a3a38aea6eba2a7c320da25 --- /dev/null +++ b/config/bootstrap-hwasan.mk @@ -0,0 +1,8 @@ +# This option enables -fsanitize=hwaddress for stage2 and stage3. + +STAGE2_CFLAGS += -fsanitize=hwaddress +STAGE3_CFLAGS += -fsanitize=hwaddress +POSTSTAGE1_LDFLAGS += -fsanitize=hwaddress -static-libhwasan \ + -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ \ + -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/ \ + -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/hwasan/.libs diff --git a/configure b/configure index f6027397cedd5c28cd821a0bc7629d6537393ecf..0b502f2784927d72eab248741633305296bf09e7 100755 --- a/configure +++ b/configure @@ -7270,7 +7270,7 @@ fi # or bootstrap-ubsan, bootstrap it. if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then case "$BUILD_CONFIG" in - *bootstrap-asan* | *bootstrap-ubsan* ) + *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* ) bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer, bootstrap_fixincludes=yes ;; diff --git a/configure.ac b/configure.ac index 50e2fa135b10486170f68ffa162dcbeee2adff90..f793e14e0316e26d05ba72696e8c7c10641c7c96 100644 --- a/configure.ac +++ b/configure.ac @@ -2775,7 +2775,7 @@ fi # or bootstrap-ubsan, bootstrap it. if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then case "$BUILD_CONFIG" in - *bootstrap-asan* | *bootstrap-ubsan* ) + *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* ) bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer, bootstrap_fixincludes=yes ;; diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index c5937c94b7cebd3d0f1d7d551a7b593c128e7673..37cb8ed15671205567ee20286e21fb904b3e3c9f 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -2676,6 +2676,12 @@ Some examples of build configurations designed for developers of GCC are: @item @samp{bootstrap-asan} Compiles GCC itself using Address Sanitization in order to catch invalid memory accesses within the GCC code. + +@item @samp{bootstrap-hwasan} +Compiles GCC itself using HWAddress Sanitization in order to catch invalid +memory accesses within the GCC code. This option is only available on AArch64 +targets with a very recent linux kernel (5.4 or later). + @end table @section Building a cross compiler diff --git a/libiberty/configure b/libiberty/configure index 7a34dabec32b0b383bd33f07811757335f4dd39c..cb2dd4ff5295598343cc18b3a79a86a778f2261d 100755 --- a/libiberty/configure +++ b/libiberty/configure @@ -5261,6 +5261,7 @@ fi NOASANFLAG= case " ${CFLAGS} " in *\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;; + *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;; esac diff --git a/libiberty/configure.ac b/libiberty/configure.ac index f1ce76010c9acde79c5dc46686a78b2e2f19244e..043237628b79cbf37d07359b59c5ffe17a7a22ef 100644 --- a/libiberty/configure.ac +++ b/libiberty/configure.ac @@ -240,6 +240,7 @@ AC_SUBST(PICFLAG) NOASANFLAG= case " ${CFLAGS} " in *\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;; + *\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;; esac AC_SUBST(NOASANFLAG) diff --git a/lto-plugin/Makefile.am b/lto-plugin/Makefile.am index 28dc21014b2e86988fa88adabd63ce6092e18e02..34aa397d785e3cc9b6975de460d065900364c3ff 100644 --- a/lto-plugin/Makefile.am +++ b/lto-plugin/Makefile.am @@ -11,8 +11,8 @@ AM_CPPFLAGS = -I$(top_srcdir)/../include $(DEFS) AM_CFLAGS = @ac_lto_plugin_warn_cflags@ AM_LDFLAGS = @ac_lto_plugin_ldflags@ AM_LIBTOOLFLAGS = --tag=disable-static -override CFLAGS := $(filter-out -fsanitize=address,$(CFLAGS)) -override LDFLAGS := $(filter-out -fsanitize=address,$(LDFLAGS)) +override CFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(CFLAGS)) +override LDFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(LDFLAGS)) libexecsub_LTLIBRARIES = liblto_plugin.la gcc_build_dir = @gcc_build_dir@ diff --git a/lto-plugin/Makefile.in b/lto-plugin/Makefile.in index 8dd6e40ac9dddab39fe1752f9a70e6834ab3c926..7acfc047eff6f86f8d38287e6ffb6533c4c13500 100644 --- a/lto-plugin/Makefile.in +++ b/lto-plugin/Makefile.in @@ -672,8 +672,8 @@ uninstall-am: uninstall-libexecsubLTLIBRARIES .PRECIOUS: Makefile -override CFLAGS := $(filter-out -fsanitize=address,$(CFLAGS)) -override LDFLAGS := $(filter-out -fsanitize=address,$(LDFLAGS)) +override CFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(CFLAGS)) +override LDFLAGS := $(filter-out -fsanitize=address -fsanitize=hwaddress,$(LDFLAGS)) all-local: $(in_gcc_libs)