# Look for afl-fuzz. If it is in path we assume that afl-gcc/afl-clang/afl-clang-fast is present as well. ifeq (, $(shell which afl-fuzz)) $(error "It looks like AFL is not in your path. AFL is available on GitHub: https://github.com/google/AFL") endif # Try to figure out which compiler we should use, afl-clang-fast being the preferred choice. ifeq (, $(AFL_COMPILER)) # If AFL_COMPILER is not set, check if afl-clang-fast is available. ifeq (, $(shell which afl-clang-fast)) # If it is not, try to figure out if we should use afl-gcc or afl-clang. ifeq "$(findstring clang, $(shell $(CC) --version 2>/dev/null))" "" AFL_COMPILER = afl-gcc else AFL_COMPILER = afl-clang endif else # If it is available, use it. AFL_COMPILER = afl-clang-fast endif endif ROOT_DIR := $(realpath ..) DISASM_SRC := $(ROOT_DIR)/bddisasm DISASM_INC := $(DISASM_SRC)/include SHEMU_SRC := $(ROOT_DIR)/bdshemu PUBLIC_INC := $(ROOT_DIR)/inc SHEMU_INC := $(PUBLIC_INC)/bdshemu FUZZER_SRC := $(ROOT_DIR)/bdshemu_fuzz ALL_SRC := $(shell find $(DISASM_SRC)/*.c -type f) ALL_SRC += $(shell find $(SHEMU_SRC)/*.c -type f) ALL_SRC += $(shell find $(FUZZER_SRC)/*.c -type f) ALL_INC := $(shell find $(DISASM_INC)/*.h -type f) ALL_INC += $(shell find $(PUBLIC_INC)/*.h -type f) ALL_INC += $(shell find $(SHEMU_INC)/*.h -type f) # Enable qui ck and dirty mode, if needed. ifeq ($(DIRTY),y) AFL_ARGS := -d endif ifdef AFL_MEMORY AFL_ARGS := -m $(AFL_MEMORY) endif CFLAGS := -std=c11 -fpic -fno-strict-aliasing -maes \ -D_REENTRANT -fstack-protector -ffunction-sections -fdata-sections \ -DNDEBUG -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -Ofast -g3 ifeq ($(LOG),y) PREDEFS := -DENABLE_LOGGING endif # Build shfuzz with AFL instrumentation. shfuzz: $(ALL_SRC) $(ALL_INC) @echo "Using $(AFL_COMPILER) as a compiler" @$(AFL_COMPILER) $(PREDEFS) $(CFLAGS) -I$(DISASM_INC) -I$(PUBLIC_INC) -I$(SHEMU_INC) $(ALL_SRC) -o shfuzz @echo "Done!" # Run the tests in 32-bit mode. .PHONY: fuzz32 fuzz32: shfuzz @afl-fuzz -i ./in-32 -o ./out-32 $(AFL_ARGS) ./shfuzz @@ 32 # Run the tests in 64-bit mode. .PHONY: fuzz64 fuzz64: shfuzz @afl-fuzz -i ./in-64 -o ./out-64 $(AFL_ARGS) ./shfuzz @@ 64 .PHONY: clean clean: @rm -f ./shfuzz