mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-26 14:29:29 +07:00
fb0b0a73b2
kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on the same files where we currently disable gcov and UBSan instrumentation, plus some additional exclusions which appear necessary to boot on book3e machines. Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Daniel Axtens <dja@axtens.net> # e6500 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
49 lines
1.3 KiB
Makefile
49 lines
1.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
# List of files in the vdso, has to be asm only for now
|
|
|
|
obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o
|
|
|
|
# Build rules
|
|
|
|
targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
|
|
obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
|
|
|
|
GCOV_PROFILE := n
|
|
KCOV_INSTRUMENT := n
|
|
UBSAN_SANITIZE := n
|
|
|
|
ccflags-y := -shared -fno-common -fno-builtin
|
|
ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
|
|
$(call cc-ldoption, -Wl$(comma)--hash-style=both)
|
|
asflags-y := -D__VDSO64__ -s
|
|
|
|
obj-y += vdso64_wrapper.o
|
|
extra-y += vdso64.lds
|
|
CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
|
|
|
|
# Force dependency (incbin is bad)
|
|
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
|
|
|
|
# link rule for the .so file, .lds has to be first
|
|
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
|
|
$(call if_changed,vdso64ld)
|
|
|
|
# strip rule for the .so file
|
|
$(obj)/%.so: OBJCOPYFLAGS := -S
|
|
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
# actual build commands
|
|
quiet_cmd_vdso64ld = VDSO64L $@
|
|
cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
|
|
|
|
# install commands for the unstripped file
|
|
quiet_cmd_vdso_install = INSTALL $@
|
|
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
|
|
|
|
vdso64.so: $(obj)/vdso64.so.dbg
|
|
@mkdir -p $(MODLIB)/vdso
|
|
$(call cmd,vdso_install)
|
|
|
|
vdso_install: vdso64.so
|