15f55e098SHelge Deller# Include the generic Makefile to check the built vdso. 2*127b0e05SThomas Weißschuhinclude $(srctree)/lib/vdso/Makefile.include 35f55e098SHelge Deller 45f55e098SHelge DellerKCOV_INSTRUMENT := n 55f55e098SHelge Deller 65f55e098SHelge Deller# Disable gcov profiling, ubsan and kasan for VDSO code 75f55e098SHelge DellerGCOV_PROFILE := n 85f55e098SHelge DellerUBSAN_SANITIZE := n 95f55e098SHelge DellerKASAN_SANITIZE := n 105f55e098SHelge DellerKCSAN_SANITIZE := n 11df24e178SHelge Deller 12df24e178SHelge Dellerobj-vdso64 = note.o sigtramp.o restart_syscall.o 135f55e098SHelge Dellerobj-cvdso64 = vdso64_generic.o 14df24e178SHelge Deller 15df24e178SHelge Deller# Build rules 16df24e178SHelge Deller 175f55e098SHelge Dellertargets := $(obj-vdso64) $(obj-cvdso64) vdso64.so 18df24e178SHelge Dellerobj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) 195f55e098SHelge Dellerobj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64)) 20df24e178SHelge Deller 215f55e098SHelge DellerVDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE) 225f55e098SHelge DellerCFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE) 23df24e178SHelge Deller 24df24e178SHelge Dellerccflags-y := -shared -fno-common -fno-builtin 25df24e178SHelge Dellerccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ 26df24e178SHelge Deller $(call ld-option, -Wl$(comma)--hash-style=sysv) 27df24e178SHelge Dellerasflags-y := -D__VDSO64__ -s 28df24e178SHelge Deller 29df24e178SHelge DellerKBUILD_AFLAGS += -DBUILD_VDSO 30df24e178SHelge DellerKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 31df24e178SHelge Deller 32df24e178SHelge DellerVDSO_LIBGCC := $(shell $(CC) -print-libgcc-file-name) 33df24e178SHelge Deller 34df24e178SHelge Dellerobj-y += vdso64_wrapper.o 3536b2f3aeSMasahiro Yamadatargets += vdso64.lds 36df24e178SHelge DellerCPPFLAGS_vdso64.lds += -P -C -U$(ARCH) 37df24e178SHelge Deller 38df24e178SHelge Deller$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so FORCE 39df24e178SHelge Deller 40df24e178SHelge Deller# Force dependency (incbin is bad) 41df24e178SHelge Deller# link rule for the .so file, .lds has to be first 425f55e098SHelge Deller$(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) $(VDSO_LIBGCC) FORCE 43df24e178SHelge Deller $(call if_changed,vdso64ld) 44df24e178SHelge Deller 45df24e178SHelge Deller# assembly rules for the .S files 46df24e178SHelge Deller$(obj-vdso64): %.o: %.S FORCE 47df24e178SHelge Deller $(call if_changed_dep,vdso64as) 485f55e098SHelge Deller$(obj-cvdso64): %.o: %.c FORCE 495f55e098SHelge Deller $(call if_changed_dep,vdso64cc) 50df24e178SHelge Deller 51df24e178SHelge Deller# actual build commands 52df24e178SHelge Dellerquiet_cmd_vdso64ld = VDSO64L $@ 539086e601SHelge Deller cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@ 54df24e178SHelge Dellerquiet_cmd_vdso64as = VDSO64A $@ 55df24e178SHelge Deller cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $< 565f55e098SHelge Dellerquiet_cmd_vdso64cc = VDSO64C $@ 575f55e098SHelge Deller cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $< 58df24e178SHelge Deller 59df24e178SHelge Deller# Generate VDSO offsets using helper script 60b1992c37SMasahiro Yamadagen-vdsosym := $(src)/gen_vdso_offsets.sh 61df24e178SHelge Dellerquiet_cmd_vdsosym = VDSOSYM $@ 62df24e178SHelge Deller cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 63df24e178SHelge Deller 64df24e178SHelge Dellerinclude/generated/vdso64-offsets.h: $(obj)/vdso64.so FORCE 65df24e178SHelge Deller $(call if_changed,vdsosym) 66