1# List of files in the vdso, has to be asm only for now 2 3obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o 4 5# Build rules 6 7targets := $(obj-vdso64) vdso64.so vdso64.so.dbg 8obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) 9 10GCOV_PROFILE := n 11UBSAN_SANITIZE := n 12 13ccflags-y := -shared -fno-common -fno-builtin 14ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ 15 $(call cc-ldoption, -Wl$(comma)--hash-style=both) 16asflags-y := -D__VDSO64__ -s 17 18obj-y += vdso64_wrapper.o 19extra-y += vdso64.lds 20CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) 21 22# Force dependency (incbin is bad) 23$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so 24 25# link rule for the .so file, .lds has to be first 26$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE 27 $(call if_changed,vdso64ld) 28 29# strip rule for the .so file 30$(obj)/%.so: OBJCOPYFLAGS := -S 31$(obj)/%.so: $(obj)/%.so.dbg FORCE 32 $(call if_changed,objcopy) 33 34# actual build commands 35quiet_cmd_vdso64ld = VDSO64L $@ 36 cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) 37 38# install commands for the unstripped file 39quiet_cmd_vdso_install = INSTALL $@ 40 cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ 41 42vdso64.so: $(obj)/vdso64.so.dbg 43 @mkdir -p $(MODLIB)/vdso 44 $(call cmd,vdso_install) 45 46vdso_install: vdso64.so 47