Merge "Revert "Revert "CFI compatibility with static executables and nested archives""" (fba0a560) · Commits · e / os / android_build

core/config_sanitizers.mk

+25 −6

Original line number	Diff line number	Diff line
		@@ -235,6 +235,11 @@ ifneq ($(filter cfi,$(my_sanitize)),)
		# entire module.
		LOCAL_ARM_MODE := thumb
		my_cflags += $(CFI_EXTRA_CFLAGS)
		# Only append the default visibility flag if -fvisibility has not already been
		# set to hidden.
		ifeq ($(filter -fvisibility=hidden,$(LOCAL_CFLAGS)),)
		my_cflags += -fvisibility=default
		endif
		my_ldflags += $(CFI_EXTRA_LDFLAGS)
		my_arflags += --plugin $(LLVM_PREBUILTS_PATH)/../lib64/LLVMgold.so
		# Workaround for b/33678192. CFI jumptables need Thumb2 codegen. Revert when
		@@ -242,6 +247,15 @@ ifneq ($(filter cfi,$(my_sanitize)),)
		ifneq ($(filter arm,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
		my_ldflags += -march=armv7-a
		endif

		ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
		my_ldflags := $(filter-out -fsanitize-cfi-cross-dso,$(my_ldflags))
		my_cflags := $(filter-out -fsanitize-cfi-cross-dso,$(my_cflags))
		else
		# Apply the version script to non-static executables
		my_ldflags += -Wl,--version-script,build/soong/cc/config/cfi_exports.map
		LOCAL_ADDITIONAL_DEPENDENCIES += build/soong/cc/config/cfi_exports.map
		endif
		endif

		# If local or global modules need ASAN, add linker flags.
		@@ -293,6 +307,10 @@ ifneq ($(strip $(LOCAL_SANITIZE_RECOVER)),)
		endif

		ifneq ($(my_sanitize_diag),)
		# TODO(vishwath): Add diagnostic support for static executables once
		# we switch to clang-4393122 (which adds the static ubsan runtime
		# that this depends on)
		ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
		notrap_arg := $(subst $(space),$(comma),$(my_sanitize_diag)),
		my_cflags += -fno-sanitize-trap=$(notrap_arg)
		# Diagnostic requires a runtime library, unless ASan or TSan are also enabled.
		@@ -301,3 +319,4 @@ ifneq ($(my_sanitize_diag),)
		my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_RUNTIME_LIBRARY)
		endif
		endif
		endif

core/definitions.mk

+1 −1

Original line number	Diff line number	Diff line
		@@ -1556,7 +1556,7 @@ $(hide) ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(1)))_objs;
		filelist="$$filelist $$ldir/$$ext$$f"; \
		done ; \
		$($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_AR) $($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_ARFLAGS) \
		$(2) $$filelist
		$(PRIVATE_ARFLAGS) $(2) $$filelist

		endef