1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 24bff8cb5SSven Schnelle# List of files in the vdso 3b020632eSMartin Schwidefsky 4aff69273SFangrui Song# Include the generic Makefile to check the built vdso. 54bff8cb5SSven Schnelleinclude $(srctree)/lib/vdso/Makefile 6*b920aa77SHeiko Carstensobj-vdso64 = vdso_user_wrapper.o note.o vgetrandom-chacha.o 7*b920aa77SHeiko Carstensobj-cvdso64 = vdso64_generic.o getcpu.o vgetrandom.o 800b55eafSSven SchnelleVDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE) $(CC_FLAGS_CHECK_STACK) 900b55eafSSven SchnelleCFLAGS_REMOVE_getcpu.o = $(VDSO_CFLAGS_REMOVE) 10*b920aa77SHeiko CarstensCFLAGS_REMOVE_vgetrandom.o = $(VDSO_CFLAGS_REMOVE) 1100b55eafSSven SchnelleCFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE) 12b020632eSMartin Schwidefsky 13*b920aa77SHeiko Carstensifneq ($(c-getrandom-y),) 14*b920aa77SHeiko Carstens CFLAGS_vgetrandom.o += -include $(c-getrandom-y) 15*b920aa77SHeiko Carstensendif 16*b920aa77SHeiko Carstens 17b020632eSMartin Schwidefsky# Build rules 18b020632eSMartin Schwidefsky 194bff8cb5SSven Schnelletargets := $(obj-vdso64) $(obj-cvdso64) vdso64.so vdso64.so.dbg 20b020632eSMartin Schwidefskyobj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) 214bff8cb5SSven Schnelleobj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64)) 22b020632eSMartin Schwidefsky 23bc3703f2SHendrik BruecknerKBUILD_AFLAGS += -DBUILD_VDSO 244bf3ec38SSven SchnelleKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 25bc3703f2SHendrik Brueckner 26b020632eSMartin SchwidefskyKBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) 27f8210229SNathan ChancellorKBUILD_AFLAGS_64 += -m64 28b020632eSMartin Schwidefsky 29b020632eSMartin SchwidefskyKBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) 30185445c7SHeiko CarstensKBUILD_CFLAGS_64 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS_64)) 31d15e4314SSumanth KorikkarKBUILD_CFLAGS_64 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_64)) 328192a1b3SSumanth KorikkarKBUILD_CFLAGS_64 := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_64)) 3310f70525SJens RemusKBUILD_CFLAGS_64 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_64)) 3410f70525SJens RemusKBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin -fasynchronous-unwind-tables 350628c039SNathan Chancellorldflags-y := -shared -soname=linux-vdso64.so.1 \ 36a9684337SBill Wendling --hash-style=both --build-id=sha1 -T 37b020632eSMartin Schwidefsky 38b020632eSMartin Schwidefsky$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64) 39b020632eSMartin Schwidefsky$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64) 40b020632eSMartin Schwidefsky 41b020632eSMartin Schwidefskyobj-y += vdso64_wrapper.o 42887af6d7SMasahiro Yamadatargets += vdso64.lds 43b020632eSMartin SchwidefskyCPPFLAGS_vdso64.lds += -P -C -U$(ARCH) 44b020632eSMartin Schwidefsky 45b020632eSMartin Schwidefsky# Force dependency (incbin is bad) 46b020632eSMartin Schwidefsky$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so 47b020632eSMartin Schwidefsky 480dd0bbc2SSven Schnellequiet_cmd_vdso_and_check = VDSO $@ 490dd0bbc2SSven Schnelle cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check) 500dd0bbc2SSven Schnelle 51b020632eSMartin Schwidefsky# link rule for the .so file, .lds has to be first 52b957df3bSMasahiro Yamada$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) FORCE 530dd0bbc2SSven Schnelle $(call if_changed,vdso_and_check) 54b020632eSMartin Schwidefsky 55b020632eSMartin Schwidefsky# strip rule for the .so file 56b020632eSMartin Schwidefsky$(obj)/%.so: OBJCOPYFLAGS := -S 57b020632eSMartin Schwidefsky$(obj)/%.so: $(obj)/%.so.dbg FORCE 58b020632eSMartin Schwidefsky $(call if_changed,objcopy) 59b020632eSMartin Schwidefsky 60b020632eSMartin Schwidefsky# assembly rules for the .S files 61b44b136aSVasily Gorbik$(obj-vdso64): %.o: %.S FORCE 62b020632eSMartin Schwidefsky $(call if_changed_dep,vdso64as) 63b020632eSMartin Schwidefsky 644bff8cb5SSven Schnelle$(obj-cvdso64): %.o: %.c FORCE 654bff8cb5SSven Schnelle $(call if_changed_dep,vdso64cc) 664bff8cb5SSven Schnelle 67b020632eSMartin Schwidefsky# actual build commands 68b020632eSMartin Schwidefskyquiet_cmd_vdso64as = VDSO64A $@ 69b020632eSMartin Schwidefsky cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $< 704bff8cb5SSven Schnellequiet_cmd_vdso64cc = VDSO64C $@ 714bff8cb5SSven Schnelle cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $< 72b020632eSMartin Schwidefsky 73779df224SSven Schnelle# Generate VDSO offsets using helper script 74b1992c37SMasahiro Yamadagen-vdsosym := $(src)/gen_vdso_offsets.sh 75779df224SSven Schnellequiet_cmd_vdsosym = VDSOSYM $@ 76779df224SSven Schnelle cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 77779df224SSven Schnelle 78779df224SSven Schnelleinclude/generated/vdso64-offsets.h: $(obj)/vdso64.so.dbg FORCE 79779df224SSven Schnelle $(call if_changed,vdsosym) 80