##############################################
|
## Perform configuration steps for sanitizers.
|
##############################################
|
|
my_sanitize := $(strip $(LOCAL_SANITIZE))
|
my_sanitize_diag := $(strip $(LOCAL_SANITIZE_DIAG))
|
|
my_global_sanitize :=
|
my_global_sanitize_diag :=
|
ifdef LOCAL_IS_HOST_MODULE
|
ifneq ($($(my_prefix)OS),windows)
|
my_global_sanitize := $(strip $(SANITIZE_HOST))
|
|
# SANITIZE_HOST=true is a deprecated way to say SANITIZE_HOST=address.
|
my_global_sanitize := $(subst true,address,$(my_global_sanitize))
|
endif
|
else
|
my_global_sanitize := $(strip $(SANITIZE_TARGET))
|
my_global_sanitize_diag := $(strip $(SANITIZE_TARGET_DIAG))
|
endif
|
|
# Disable global integer_overflow in excluded paths.
|
ifneq ($(filter integer_overflow, $(my_global_sanitize)),)
|
combined_exclude_paths := $(INTEGER_OVERFLOW_EXCLUDE_PATHS) \
|
$(PRODUCT_INTEGER_OVERFLOW_EXCLUDE_PATHS)
|
|
ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_exclude_paths)),\
|
$(filter $(dir)%,$(LOCAL_PATH)))),)
|
my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
|
my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
|
endif
|
endif
|
|
# Global integer sanitization doesn't support static modules.
|
ifeq ($(filter SHARED_LIBRARIES EXECUTABLES,$(LOCAL_MODULE_CLASS)),)
|
my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
|
my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
|
endif
|
ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
|
my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
|
my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
|
endif
|
|
# Disable global CFI in excluded paths
|
ifneq ($(filter cfi, $(my_global_sanitize)),)
|
combined_exclude_paths := $(CFI_EXCLUDE_PATHS) \
|
$(PRODUCT_CFI_EXCLUDE_PATHS)
|
|
ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_exclude_paths)),\
|
$(filter $(dir)%,$(LOCAL_PATH)))),)
|
my_global_sanitize := $(filter-out cfi,$(my_global_sanitize))
|
my_global_sanitize_diag := $(filter-out cfi,$(my_global_sanitize_diag))
|
endif
|
endif
|
|
ifneq ($(my_global_sanitize),)
|
my_sanitize := $(my_global_sanitize) $(my_sanitize)
|
endif
|
ifneq ($(my_global_sanitize_diag),)
|
my_sanitize_diag := $(my_global_sanitize_diag) $(my_sanitize_diag)
|
endif
|
|
# The sanitizer specified in the product configuration wins over the previous.
|
ifneq ($(SANITIZER.$(TARGET_PRODUCT).$(LOCAL_MODULE).CONFIG),)
|
my_sanitize := $(SANITIZER.$(TARGET_PRODUCT).$(LOCAL_MODULE).CONFIG)
|
ifeq ($(my_sanitize),never)
|
my_sanitize :=
|
my_sanitize_diag :=
|
endif
|
endif
|
|
ifndef LOCAL_IS_HOST_MODULE
|
# Add a filter point for 32-bit vs 64-bit sanitization (to lighten the burden)
|
SANITIZE_TARGET_ARCH ?= $(TARGET_ARCH) $(TARGET_2ND_ARCH)
|
ifeq ($(filter $(SANITIZE_TARGET_ARCH),$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
|
my_sanitize :=
|
my_sanitize_diag :=
|
endif
|
endif
|
|
# Add a filter point based on module owner (to lighten the burden). The format is a space- or
|
# colon-separated list of owner names.
|
ifneq (,$(SANITIZE_NEVER_BY_OWNER))
|
ifneq (,$(LOCAL_MODULE_OWNER))
|
ifneq (,$(filter $(LOCAL_MODULE_OWNER),$(subst :, ,$(SANITIZE_NEVER_BY_OWNER))))
|
$(warning Not sanitizing $(LOCAL_MODULE) based on module owner.)
|
my_sanitize :=
|
my_sanitize_diag :=
|
endif
|
endif
|
endif
|
|
# Don't apply sanitizers to NDK code.
|
ifdef LOCAL_SDK_VERSION
|
my_sanitize :=
|
my_global_sanitize :=
|
my_sanitize_diag :=
|
endif
|
|
# Never always wins.
|
ifeq ($(LOCAL_SANITIZE),never)
|
my_sanitize :=
|
my_sanitize_diag :=
|
endif
|
|
# Enable CFI in included paths (for Arm64 only).
|
ifeq ($(filter cfi, $(my_sanitize)),)
|
ifneq ($(filter arm64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
|
combined_include_paths := $(CFI_INCLUDE_PATHS) \
|
$(PRODUCT_CFI_INCLUDE_PATHS)
|
|
ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_include_paths)),\
|
$(filter $(dir)%,$(LOCAL_PATH)))),)
|
my_sanitize := cfi $(my_sanitize)
|
endif
|
endif
|
endif
|
|
# If CFI is disabled globally, remove it from my_sanitize.
|
ifeq ($(strip $(ENABLE_CFI)),false)
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
|
endif
|
|
# Disable CFI for arm32 (b/35157333).
|
ifneq ($(filter arm,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
|
endif
|
|
# Also disable CFI if ASAN is enabled.
|
ifneq ($(filter address,$(my_sanitize)),)
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
|
endif
|
|
# CFI needs gold linker, and mips toolchain does not have one.
|
ifneq ($(filter mips mips64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
|
endif
|
|
# Disable sanitizers which need the UBSan runtime for host targets.
|
ifdef LOCAL_IS_HOST_MODULE
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
|
my_sanitize := $(filter-out signed-integer-overflow unsigned-integer-overflow integer_overflow,$(my_sanitize))
|
my_sanitize_diag := $(filter-out signed-integer-overflow unsigned-integer-overflow integer_overflow,$(my_sanitize_diag))
|
endif
|
|
# Support for local sanitize blacklist paths.
|
ifneq ($(my_sanitize)$(my_global_sanitize),)
|
ifneq ($(LOCAL_SANITIZE_BLACKLIST),)
|
my_cflags += -fsanitize-blacklist=$(LOCAL_PATH)/$(LOCAL_SANITIZE_BLACKLIST)
|
endif
|
endif
|
|
# Disable integer_overflow if LOCAL_NOSANITIZE=integer.
|
ifneq ($(filter integer_overflow, $(my_global_sanitize) $(my_sanitize)),)
|
ifneq ($(filter integer, $(strip $(LOCAL_NOSANITIZE))),)
|
my_sanitize := $(filter-out integer_overflow,$(my_sanitize))
|
my_sanitize_diag := $(filter-out integer_overflow,$(my_sanitize_diag))
|
endif
|
endif
|
|
my_nosanitize = $(strip $(LOCAL_NOSANITIZE))
|
ifneq ($(my_nosanitize),)
|
my_sanitize := $(filter-out $(my_nosanitize),$(my_sanitize))
|
endif
|
|
ifneq ($(filter arm x86 x86_64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
|
my_sanitize := $(filter-out hwaddress,$(my_sanitize))
|
endif
|
|
ifneq ($(filter hwaddress,$(my_sanitize)),)
|
my_sanitize := $(filter-out address,$(my_sanitize))
|
my_sanitize := $(filter-out thread,$(my_sanitize))
|
my_sanitize := $(filter-out cfi,$(my_sanitize))
|
endif
|
|
ifneq ($(filter hwaddress,$(my_sanitize)),)
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)HWADDRESS_SANITIZER_RUNTIME_LIBRARY)
|
ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
|
ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
|
my_static_libraries := $(my_static_libraries) $($(LOCAL_2ND_ARCH_VAR_PREFIX)HWADDRESS_SANITIZER_STATIC_LIBRARY)
|
endif
|
endif
|
endif
|
|
# TSAN is not supported on 32-bit architectures. For non-multilib cases, make
|
# its use an error. For multilib cases, don't use it for the 32-bit case.
|
ifneq ($(filter thread,$(my_sanitize)),)
|
ifeq ($(my_32_64_bit_suffix),32)
|
ifeq ($(my_module_multilib),both)
|
my_sanitize := $(filter-out thread,$(my_sanitize))
|
else
|
$(error $(LOCAL_PATH): $(LOCAL_MODULE): TSAN cannot be used for 32-bit modules.)
|
endif
|
else
|
my_shared_libraries += $(TSAN_RUNTIME_LIBRARY)
|
endif
|
endif
|
|
ifneq ($(filter safe-stack,$(my_sanitize)),)
|
ifeq ($(my_32_64_bit_suffix),32)
|
my_sanitize := $(filter-out safe-stack,$(my_sanitize))
|
endif
|
endif
|
|
# Disable Scudo if ASan or TSan is enabled.
|
ifneq ($(filter address thread hwaddress,$(my_sanitize)),)
|
my_sanitize := $(filter-out scudo,$(my_sanitize))
|
endif
|
|
# Or if disabled globally.
|
ifeq ($(PRODUCT_DISABLE_SCUDO),true)
|
my_sanitize := $(filter-out scudo,$(my_sanitize))
|
endif
|
|
# Undefined symbols can occur if a non-sanitized library links
|
# sanitized static libraries. That's OK, because the executable
|
# always depends on the ASan runtime library, which defines these
|
# symbols.
|
ifneq ($(filter address thread,$(strip $(SANITIZE_TARGET))),)
|
ifndef LOCAL_IS_HOST_MODULE
|
ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
|
ifeq ($(my_sanitize),)
|
my_allow_undefined_symbols := true
|
endif
|
endif
|
endif
|
endif
|
|
ifneq ($(filter default-ub,$(my_sanitize)),)
|
my_sanitize := $(CLANG_DEFAULT_UB_CHECKS)
|
endif
|
|
ifneq ($(filter coverage,$(my_sanitize)),)
|
ifeq ($(filter address,$(my_sanitize)),)
|
$(error $(LOCAL_PATH): $(LOCAL_MODULE): Use of 'coverage' also requires 'address')
|
endif
|
my_cflags += -fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp
|
my_sanitize := $(filter-out coverage,$(my_sanitize))
|
endif
|
|
ifneq ($(filter integer_overflow,$(my_sanitize)),)
|
# Respect LOCAL_NOSANITIZE for integer-overflow flags.
|
ifeq ($(filter signed-integer-overflow, $(strip $(LOCAL_NOSANITIZE))),)
|
my_sanitize += signed-integer-overflow
|
endif
|
ifeq ($(filter unsigned-integer-overflow, $(strip $(LOCAL_NOSANITIZE))),)
|
my_sanitize += unsigned-integer-overflow
|
endif
|
my_cflags += $(INTEGER_OVERFLOW_EXTRA_CFLAGS)
|
|
# Check for diagnostics mode.
|
ifneq ($(filter integer_overflow,$(my_sanitize_diag)),)
|
ifneq ($(filter SHARED_LIBRARIES EXECUTABLES,$(LOCAL_MODULE_CLASS)),)
|
ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
|
my_sanitize_diag += signed-integer-overflow
|
my_sanitize_diag += unsigned-integer-overflow
|
else
|
$(call pretty-error,Make cannot apply integer overflow diagnostics to static binary.)
|
endif
|
else
|
$(call pretty-error,Make cannot apply integer overflow diagnostics to static library.)
|
endif
|
endif
|
my_sanitize := $(filter-out integer_overflow,$(my_sanitize))
|
endif
|
|
# Makes sure integer_overflow diagnostics is removed from the diagnostics list
|
# even if integer_overflow is not set for some reason.
|
ifneq ($(filter integer_overflow,$(my_sanitize_diag)),)
|
my_sanitize_diag := $(filter-out integer_overflow,$(my_sanitize_diag))
|
endif
|
|
ifneq ($(my_sanitize),)
|
fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize))
|
my_cflags += -fsanitize=$(fsanitize_arg)
|
my_asflags += -fsanitize=$(fsanitize_arg)
|
|
ifdef LOCAL_IS_HOST_MODULE
|
my_cflags += -fno-sanitize-recover=all
|
my_ldflags += -fsanitize=$(fsanitize_arg)
|
else
|
my_cflags += -fsanitize-trap=all
|
my_cflags += -ftrap-function=abort
|
ifneq ($(filter address thread,$(my_sanitize)),)
|
my_cflags += -fno-sanitize-trap=address,thread
|
my_shared_libraries += libdl
|
endif
|
endif
|
endif
|
|
ifneq ($(filter cfi,$(my_sanitize)),)
|
# __cfi_check needs to be built as Thumb (see the code in linker_cfi.cpp).
|
# LLVM is not set up to do this on a function basis, so force Thumb on the
|
# entire module.
|
LOCAL_ARM_MODE := thumb
|
my_cflags += $(CFI_EXTRA_CFLAGS)
|
my_asflags += $(CFI_EXTRA_ASFLAGS)
|
# Only append the default visibility flag if -fvisibility has not already been
|
# set to hidden.
|
ifeq ($(filter -fvisibility=hidden,$(LOCAL_CFLAGS)),)
|
my_cflags += -fvisibility=default
|
endif
|
my_ldflags += $(CFI_EXTRA_LDFLAGS)
|
my_arflags += --plugin $(LLVM_PREBUILTS_PATH)/../lib64/LLVMgold.so
|
|
ifeq ($(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.
|
ifneq ($(filter address,$(my_global_sanitize) $(my_sanitize)),)
|
my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS)
|
ifdef LOCAL_IS_HOST_MODULE
|
# -nodefaultlibs (provided with libc++) prevents the driver from linking
|
# libraries needed with -fsanitize=address. http://b/18650275 (WAI)
|
my_ldflags += -Wl,--no-as-needed
|
else
|
# Add asan libraries unless LOCAL_MODULE is the asan library.
|
# ASan runtime library must be the first in the link order.
|
ifeq (,$(filter $(LOCAL_MODULE),$($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_RUNTIME_LIBRARY)))
|
my_shared_libraries := $($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
|
$(my_shared_libraries)
|
endif
|
ifeq (,$(filter $(LOCAL_MODULE),$(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)))
|
my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
|
endif
|
|
# Do not add unnecessary dependency in shared libraries.
|
ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
|
my_ldflags += -Wl,--as-needed
|
endif
|
|
ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
|
ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
|
my_linker := $($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_LINKER)
|
# Make sure linker_asan get installed.
|
$(LOCAL_INSTALLED_MODULE) : | $(PRODUCT_OUT)$($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_LINKER_FILE)
|
endif
|
endif
|
endif
|
endif
|
|
# If local module needs ASAN, add compiler flags.
|
ifneq ($(filter address,$(my_sanitize)),)
|
# Frame pointer based unwinder in ASan requires ARM frame setup.
|
LOCAL_ARM_MODE := arm
|
my_cflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
|
ifndef LOCAL_IS_HOST_MODULE
|
my_cflags += -mllvm -asan-globals=0
|
endif
|
endif
|
|
# If local module needs HWASAN, add compiler flags.
|
ifneq ($(filter hwaddress,$(my_sanitize)),)
|
my_cflags += $(HWADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
|
endif
|
|
# Use minimal diagnostics when integer overflow is enabled; never do it for HOST or AUX modules
|
ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_IS_AUX_MODULE),)
|
# Pre-emptively add UBSAN minimal runtime incase a static library dependency requires it
|
ifeq ($(filter STATIC_LIBRARIES,$(LOCAL_MODULE_CLASS)),)
|
ifndef LOCAL_SDK_VERSION
|
my_static_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_MINIMAL_RUNTIME_LIBRARY)
|
my_ldflags += -Wl,--exclude-libs,$($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_MINIMAL_RUNTIME_LIBRARY).a
|
endif
|
endif
|
ifneq ($(filter unsigned-integer-overflow signed-integer-overflow integer,$(my_sanitize)),)
|
ifeq ($(filter unsigned-integer-overflow signed-integer-overflow integer,$(my_sanitize_diag)),)
|
ifeq ($(filter cfi,$(my_sanitize_diag)),)
|
ifeq ($(filter address hwaddress,$(my_sanitize)),)
|
my_cflags += -fsanitize-minimal-runtime
|
my_cflags += -fno-sanitize-trap=integer
|
my_cflags += -fno-sanitize-recover=integer
|
endif
|
endif
|
endif
|
endif
|
endif
|
|
# For Scudo, we opt for the minimal runtime, unless some diagnostics are enabled.
|
ifneq ($(filter scudo,$(my_sanitize)),)
|
ifeq ($(filter unsigned-integer-overflow signed-integer-overflow integer cfi,$(my_sanitize_diag)),)
|
my_cflags += -fsanitize-minimal-runtime
|
endif
|
ifneq ($(filter -fsanitize-minimal-runtime,$(my_cflags)),)
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)SCUDO_MINIMAL_RUNTIME_LIBRARY)
|
else
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)SCUDO_RUNTIME_LIBRARY)
|
endif
|
endif
|
|
ifneq ($(strip $(LOCAL_SANITIZE_RECOVER)),)
|
recover_arg := $(subst $(space),$(comma),$(LOCAL_SANITIZE_RECOVER)),
|
my_cflags += -fsanitize-recover=$(recover_arg)
|
endif
|
|
ifneq ($(strip $(LOCAL_SANITIZE_NO_RECOVER)),)
|
no_recover_arg := $(subst $(space),$(comma),$(LOCAL_SANITIZE_NO_RECOVER)),
|
my_cflags += -fno-sanitize-recover=$(no_recover_arg)
|
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.
|
ifeq ($(filter address thread scudo hwaddress,$(my_sanitize)),)
|
# Does not have to be the first DT_NEEDED unlike ASan.
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_RUNTIME_LIBRARY)
|
endif
|
endif
|
endif
|
|
# http://b/119329758, Android core does not boot up with this sanitizer yet.
|
# Previously sanitized modules might not pass new implicit-integer-sign-change check.
|
# Disable this check unless it has been explicitly specified.
|
ifneq ($(findstring fsanitize,$(my_cflags)),)
|
ifneq ($(findstring integer,$(my_cflags)),)
|
ifeq ($(findstring sanitize=implicit-integer-sign-change,$(my_cflags)),)
|
my_cflags += -fno-sanitize=implicit-integer-sign-change
|
endif
|
endif
|
endif
|
