Add UBSAN support and handlers

[project/bcm63xx/atf.git] / Makefile

diff --git a/Makefile b/Makefile
index 43ff8d2ffd0a5124170a35931bc882d0dc046f77..043e751a7b4544c77df8002965fdc788a7eeeb66 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -278,6 +278,14 @@ TF_CFLAGS          +=      $(CPPFLAGS) $(TF_CFLAGS_$(ARCH))                \
                                -ffreestanding -fno-builtin -Wall -std=gnu99    \
                                -Os -ffunction-sections -fdata-sections
 
+ifeq (${SANITIZE_UB},on)
+TF_CFLAGS              +=      -fsanitize=undefined -fno-sanitize-recover
+endif
+ifeq (${SANITIZE_UB},trap)
+TF_CFLAGS              +=      -fsanitize=undefined -fno-sanitize-recover      \
+                               -fsanitize-undefined-trap-on-error
+endif
+
 GCC_V_OUTPUT           :=      $(shell $(CC) -v 2>&1)
 
 ifneq ($(findstring armlink,$(notdir $(LD))),)
@@ -313,6 +321,10 @@ ifeq ($(notdir $(CC)),armclang)
 BL_COMMON_SOURCES      +=      lib/${ARCH}/armclang_printf.S
 endif
 
+ifeq (${SANITIZE_UB},on)
+BL_COMMON_SOURCES      +=      plat/common/ubsan.c
+endif
+
 INCLUDES               +=      -Iinclude                               \
                                -Iinclude/arch/${ARCH}                  \
                                -Iinclude/lib/cpus/${ARCH}              \
@@ -673,6 +685,10 @@ $(eval $(call assert_numeric,ARM_ARCH_MAJOR))
 $(eval $(call assert_numeric,ARM_ARCH_MINOR))
 $(eval $(call assert_numeric,BRANCH_PROTECTION))
 
+ifeq ($(filter $(SANITIZE_UB), on off trap),)
+        $(error "Invalid value for SANITIZE_UB: can be one of on, off, trap")
+endif
+
 ################################################################################
 # Add definitions to the cpp preprocessor based on the current build options.
 # This is done after including the platform specific makefile to allow the
@@ -724,6 +740,10 @@ $(eval $(call add_define,WARMBOOT_ENABLE_DCACHE_EARLY))
 $(eval $(call add_define,BL2_AT_EL3))
 $(eval $(call add_define,BL2_IN_XIP_MEM))
 
+ifeq (${SANITIZE_UB},trap)
+        $(eval $(call add_define,MONITOR_TRAPS))
+endif
+
 # Define the EL3_PAYLOAD_BASE flag only if it is provided.
 ifdef EL3_PAYLOAD_BASE
         $(eval $(call add_define,EL3_PAYLOAD_BASE))