e08302ee46
The arm64 BTI selftests are currently built in the source directory, then the generated binaries are copied to the output directory. This leaves the object files around in a potentially otherwise pristine source tree, tainting it for out-of-tree kernel builds. Prepend $(OUTPUT) to every reference to an object file in the Makefile, and remove the extra handling and copying. This puts all generated files under the output directory. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230815145931.2522557-1-andre.przywara@arm.com Signed-off-by: Will Deacon <will@kernel.org>
57 lines
1.9 KiB
Makefile
57 lines
1.9 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
TEST_GEN_PROGS := btitest nobtitest
|
|
|
|
# These tests are built as freestanding binaries since otherwise BTI
|
|
# support in ld.so is required which is not currently widespread; when
|
|
# it is available it will still be useful to test this separately as the
|
|
# cases for statically linked and dynamically lined binaries are
|
|
# slightly different.
|
|
|
|
CFLAGS_NOBTI = -mbranch-protection=none -DBTI=0
|
|
CFLAGS_BTI = -mbranch-protection=standard -DBTI=1
|
|
|
|
CFLAGS_COMMON = -ffreestanding -Wall -Wextra $(CFLAGS)
|
|
|
|
BTI_CC_COMMAND = $(CC) $(CFLAGS_BTI) $(CFLAGS_COMMON) -c -o $@ $<
|
|
NOBTI_CC_COMMAND = $(CC) $(CFLAGS_NOBTI) $(CFLAGS_COMMON) -c -o $@ $<
|
|
|
|
$(OUTPUT)/%-bti.o: %.c
|
|
$(BTI_CC_COMMAND)
|
|
|
|
$(OUTPUT)/%-bti.o: %.S
|
|
$(BTI_CC_COMMAND)
|
|
|
|
$(OUTPUT)/%-nobti.o: %.c
|
|
$(NOBTI_CC_COMMAND)
|
|
|
|
$(OUTPUT)/%-nobti.o: %.S
|
|
$(NOBTI_CC_COMMAND)
|
|
|
|
BTI_OBJS = \
|
|
$(OUTPUT)/test-bti.o \
|
|
$(OUTPUT)/signal-bti.o \
|
|
$(OUTPUT)/start-bti.o \
|
|
$(OUTPUT)/syscall-bti.o \
|
|
$(OUTPUT)/system-bti.o \
|
|
$(OUTPUT)/teststubs-bti.o \
|
|
$(OUTPUT)/trampoline-bti.o
|
|
$(OUTPUT)/btitest: $(BTI_OBJS)
|
|
$(CC) $(CFLAGS_BTI) $(CFLAGS_COMMON) -nostdlib -static -o $@ $^
|
|
|
|
NOBTI_OBJS = \
|
|
$(OUTPUT)/test-nobti.o \
|
|
$(OUTPUT)/signal-nobti.o \
|
|
$(OUTPUT)/start-nobti.o \
|
|
$(OUTPUT)/syscall-nobti.o \
|
|
$(OUTPUT)/system-nobti.o \
|
|
$(OUTPUT)/teststubs-nobti.o \
|
|
$(OUTPUT)/trampoline-nobti.o
|
|
$(OUTPUT)/nobtitest: $(NOBTI_OBJS)
|
|
$(CC) $(CFLAGS_BTI) $(CFLAGS_COMMON) -nostdlib -static -o $@ $^
|
|
|
|
# Including KSFT lib.mk here will also mangle the TEST_GEN_PROGS list
|
|
# to account for any OUTPUT target-dirs optionally provided by
|
|
# the toplevel makefile
|
|
include ../../lib.mk
|