543c37cb16
The sancov gcc plugin inserts a __sanitizer_cov_trace_pc() call at the start of basic blocks. This plugin is a helper plugin for the kcov feature. It supports all gcc versions with plugin support (from gcc-4.5 on). It is based on the gcc commit "Add fuzzing coverage support" by Dmitry Vyukov (https://gcc.gnu.org/viewcvs/gcc?limit_changes=0&view=revision&revision=231296). Signed-off-by: Emese Revfy <re.emese@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Michal Marek <mmarek@suse.com>
33 lines
1.1 KiB
Makefile
33 lines
1.1 KiB
Makefile
OBJECT_FILES_NON_STANDARD := y
|
|
|
|
purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
|
|
|
|
targets += $(purgatory-y)
|
|
PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
|
|
|
|
LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
|
|
targets += purgatory.ro
|
|
|
|
KCOV_INSTRUMENT := n
|
|
|
|
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
|
|
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
|
|
# sure how to relocate those. Like kexec-tools, use custom flags.
|
|
|
|
KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large
|
|
KBUILD_CFLAGS += -m$(BITS)
|
|
|
|
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
|
|
$(call if_changed,ld)
|
|
|
|
targets += kexec-purgatory.c
|
|
|
|
CMD_BIN2C = $(objtree)/scripts/basic/bin2c
|
|
quiet_cmd_bin2c = BIN2C $@
|
|
cmd_bin2c = $(CMD_BIN2C) kexec_purgatory < $< > $@
|
|
|
|
$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
|
|
$(call if_changed,bin2c)
|
|
|
|
obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o
|