diff options
Diffstat (limited to 'arch/powerpc/kernel/vdso64/Makefile')
| -rw-r--r-- | arch/powerpc/kernel/vdso64/Makefile | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile new file mode 100644 index 000000000..dfd34f68b --- /dev/null +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -0,0 +1,47 @@ +# 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)/, $(obj-vdso64)) + +GCOV_PROFILE := n +KCOV_INSTRUMENT := n +UBSAN_SANITIZE := n + +ccflags-y := -shared -fno-common -fno-builtin -nostdlib \ + -Wl,-soname=linux-vdso64.so.1 -Wl,--hash-style=both +asflags-y := -D__VDSO64__ -s + +obj-y += vdso64_wrapper.o +targets += vdso64.lds +CPPFLAGS_vdso64.lds += -P -C -U$(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 |