diff options
Diffstat (limited to 'arch/powerpc/kernel/vdso64/Makefile')
| -rw-r--r-- | arch/powerpc/kernel/vdso64/Makefile | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile index dfd34f68bfa1..d365810a689a 100644 --- a/arch/powerpc/kernel/vdso64/Makefile +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -1,16 +1,29 @@ # SPDX-License-Identifier: GPL-2.0 # List of files in the vdso, has to be asm only for now +ARCH_REL_TYPE_ABS := R_PPC_JUMP_SLOT|R_PPC_GLOB_DAT|R_PPC_ADDR32|R_PPC_ADDR24|R_PPC_ADDR16|R_PPC_ADDR16_LO|R_PPC_ADDR16_HI|R_PPC_ADDR16_HA|R_PPC_ADDR14|R_PPC_ADDR14_BRTAKEN|R_PPC_ADDR14_BRNTAKEN +include $(srctree)/lib/vdso/Makefile + obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o +ifneq ($(c-gettimeofday-y),) + CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y) + CFLAGS_vgettimeofday.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) + CFLAGS_vgettimeofday.o += $(call cc-option, -fno-stack-protector) + CFLAGS_vgettimeofday.o += -DDISABLE_BRANCH_PROFILING + CFLAGS_vgettimeofday.o += -ffreestanding -fasynchronous-unwind-tables + CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) +endif + # Build rules -targets := $(obj-vdso64) vdso64.so vdso64.so.dbg +targets := $(obj-vdso64) vdso64.so.dbg obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) GCOV_PROFILE := n KCOV_INSTRUMENT := n UBSAN_SANITIZE := n +KASAN_SANITIZE := n ccflags-y := -shared -fno-common -fno-builtin -nostdlib \ -Wl,-soname=linux-vdso64.so.1 -Wl,--hash-style=both @@ -20,28 +33,23 @@ obj-y += vdso64_wrapper.o targets += vdso64.lds CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) +$(obj)/vgettimeofday.o: %.o: %.c FORCE + # Force dependency (incbin is bad) -$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so +$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so.dbg # link rule for the .so file, .lds has to be first -$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE - $(call if_changed,vdso64ld) +$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday.o FORCE + $(call if_changed,vdso64ld_and_check) -# strip rule for the .so file -$(obj)/%.so: OBJCOPYFLAGS := -S -$(obj)/%.so: $(obj)/%.so.dbg FORCE - $(call if_changed,objcopy) +# Generate VDSO offsets using helper script +gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh +quiet_cmd_vdsosym = VDSOSYM $@ + cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ -# actual build commands -quiet_cmd_vdso64ld = VDSO64L $@ - cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) +include/generated/vdso64-offsets.h: $(obj)/vdso64.so.dbg FORCE + $(call if_changed,vdsosym) -# 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 +# actual build commands +quiet_cmd_vdso64ld_and_check = VDSO64L $@ + cmd_vdso64ld_and_check = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^); $(cmd_vdso_check) |