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# SPDX-License-Identifier: BSD-2-Clause-Patent
#
# fuzz.mk - makefile to fuzz local test programs
#
.SUFFIXES:
include Make.defaults
CC = clang
VALGRIND ?=
DEBUG_PRINTS ?= 0
OPTIMIZATIONS ?= -Og -ggdb
FUZZ_ARGS ?=
CFLAGS = $(OPTIMIZATIONS) -std=gnu11 \
-isystem $(TOPDIR)/include/system \
$(EFI_INCLUDES) \
-Iinclude -iquote . \
-isystem /usr/include \
-isystem $(shell $(CC) $(ARCH_CFLAGS) -print-file-name=include) \
$(ARCH_CFLAGS) \
-fsanitize=fuzzer,address \
-fshort-wchar \
-fno-builtin \
-rdynamic \
-fno-inline \
-fno-eliminate-unused-debug-types \
-fno-eliminate-unused-debug-symbols \
-gpubnames \
-grecord-gcc-switches \
$(if $(findstring clang,$(CC)),-Wno-unknown-warning-option) \
$(DEFAULT_WARNFLAGS) \
-Wsign-compare \
-Wno-deprecated-declarations \
$(if $(findstring gcc,$(CC)),-Wno-unused-but-set-variable) \
-Wno-unused-but-set-variable \
-Wno-unused-variable \
-Wno-pointer-sign \
$(DEFAULT_WERRFLAGS) \
-Werror=nonnull \
$(shell $(CC) -Werror=nonnull-compare -E -x c /dev/null >/dev/null 2>&1 && echo -Werror=nonnull-compare) \
$(ARCH_DEFINES) \
-DEFI_FUNCTION_WRAPPER \
-DGNU_EFI_USE_MS_ABI -DPAGE_SIZE=4096 \
-DSHIM_UNIT_TEST \
-DSHIM_ENABLE_LIBFUZZER \
"-DDEFAULT_DEBUG_PRINT_STATE=$(DEBUG_PRINTS)"
# On some systems (e.g. Arch Linux), limits.h is in the "include-fixed" instead
# of the "include" directory
CFLAGS += -isystem $(shell $(CC) $(ARCH_CFLAGS) -print-file-name=include-fixed)
# And on Debian also check the multi-arch include path
CFLAGS += -isystem /usr/include/$(shell $(CC) $(ARCH_CFLAGS) -print-multiarch)
libefi-test.a :
$(MAKE) -C gnu-efi \
COMPILER="$(COMPILER)" \
CC="$(CC)" \
ARCH=$(ARCH_GNUEFI) \
TOPDIR=$(TOPDIR)/gnu-efi \
-f $(TOPDIR)/gnu-efi/Makefile \
clean lib
mv gnu-efi/$(ARCH)/lib/libefi.a $@
$(MAKE) -C gnu-efi \
COMPILER="$(COMPILER)" \
ARCH=$(ARCH_GNUEFI) \
TOPDIR=$(TOPDIR)/gnu-efi \
-f $(TOPDIR)/gnu-efi/Makefile \
clean
fuzz-sbat_FILES = csv.c lib/variables.c lib/guid.c sbat_var.S mock-variables.c
fuzz-sbat :: CFLAGS+=-DHAVE_GET_VARIABLE -DHAVE_GET_VARIABLE_ATTR -DHAVE_SHIM_LOCK_GUID
fuzzers := $(patsubst %.c,%,$(wildcard fuzz-*.c))
$(fuzzers) :: fuzz-% : | libefi-test.a
$(fuzzers) :: fuzz-% : test.c fuzz-%.c $(fuzz-%_FILES)
$(CC) $(CFLAGS) -o $@ $(sort $^ $(wildcard $*.c) $(fuzz-$*_FILES)) libefi-test.a -lefivar
$(VALGRIND) ./$@ -max_len=4096 -jobs=24 $(FUZZ_ARGS)
fuzz : $(fuzzers)
$(MAKE) -f include/fuzz.mk fuzz-clean
fuzz-clean :
@rm -vf random.bin libefi-test.a
@rm -vf vgcore.* fuzz*.log
clean : fuzz-clean
all : fuzz-clean fuzz
.PHONY: $(fuzzers) all fuzz clean
.SECONDARY: random.bin
# vim:ft=make
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