1779df224SSven Schnelle# SPDX-License-Identifier: GPL-2.0 2779df224SSven Schnelle# List of files in the vdso 3779df224SSven Schnelle 4aff69273SFangrui Song# Include the generic Makefile to check the built vdso. 5*127b0e05SThomas Weißschuhinclude $(srctree)/lib/vdso/Makefile.include 6779df224SSven Schnelleobj-vdso32 = vdso_user_wrapper-32.o note-32.o 7779df224SSven Schnelle 8779df224SSven Schnelle# Build rules 9779df224SSven Schnelle 10779df224SSven Schnelletargets := $(obj-vdso32) vdso32.so vdso32.so.dbg 11779df224SSven Schnelleobj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) 12779df224SSven Schnelle 13779df224SSven SchnelleKBUILD_AFLAGS += -DBUILD_VDSO 14779df224SSven SchnelleKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 15779df224SSven Schnelle 16779df224SSven SchnelleKBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) 17779df224SSven SchnelleKBUILD_AFLAGS_32 += -m31 -s 18779df224SSven Schnelle 19779df224SSven SchnelleKBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) 20185445c7SHeiko CarstensKBUILD_CFLAGS_32 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS)) 21d15e4314SSumanth KorikkarKBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32)) 2210f70525SJens RemusKBUILD_CFLAGS_32 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_32)) 2310f70525SJens RemusKBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -fasynchronous-unwind-tables 24779df224SSven Schnelle 250628c039SNathan ChancellorLDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1 \ 26779df224SSven Schnelle --hash-style=both --build-id=sha1 -melf_s390 -T 27779df224SSven Schnelle 28779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) 29779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32) 30779df224SSven Schnelle 31779df224SSven Schnelleobj-y += vdso32_wrapper.o 3298f7cd23SSven Schnelletargets += vdso32.lds 33779df224SSven SchnelleCPPFLAGS_vdso32.lds += -P -C -U$(ARCH) 34779df224SSven Schnelle 35779df224SSven Schnelle# Force dependency (incbin is bad) 36779df224SSven Schnelle$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so 37779df224SSven Schnelle 380dd0bbc2SSven Schnellequiet_cmd_vdso_and_check = VDSO $@ 390dd0bbc2SSven Schnelle cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check) 400dd0bbc2SSven Schnelle 41b957df3bSMasahiro Yamada$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) FORCE 420dd0bbc2SSven Schnelle $(call if_changed,vdso_and_check) 43779df224SSven Schnelle 44779df224SSven Schnelle# strip rule for the .so file 45779df224SSven Schnelle$(obj)/%.so: OBJCOPYFLAGS := -S 46779df224SSven Schnelle$(obj)/%.so: $(obj)/%.so.dbg FORCE 47779df224SSven Schnelle $(call if_changed,objcopy) 48779df224SSven Schnelle 49779df224SSven Schnelle$(obj-vdso32): %-32.o: %.S FORCE 50779df224SSven Schnelle $(call if_changed_dep,vdso32as) 51779df224SSven Schnelle 52779df224SSven Schnelle# actual build commands 53779df224SSven Schnellequiet_cmd_vdso32as = VDSO32A $@ 54779df224SSven Schnelle cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< 55779df224SSven Schnellequiet_cmd_vdso32cc = VDSO32C $@ 56779df224SSven Schnelle cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $< 57779df224SSven Schnelle 58779df224SSven Schnelle# Generate VDSO offsets using helper script 59b1992c37SMasahiro Yamadagen-vdsosym := $(src)/gen_vdso_offsets.sh 60779df224SSven Schnellequiet_cmd_vdsosym = VDSOSYM $@ 61779df224SSven Schnelle cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 62779df224SSven Schnelle 63779df224SSven Schnelleinclude/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE 64779df224SSven Schnelle $(call if_changed,vdsosym) 65