1779df224SSven Schnelle# SPDX-License-Identifier: GPL-2.0 2779df224SSven Schnelle# List of files in the vdso 3779df224SSven Schnelle 4779df224SSven SchnelleKCOV_INSTRUMENT := n 5779df224SSven SchnelleARCH_REL_TYPE_ABS := R_390_COPY|R_390_GLOB_DAT|R_390_JMP_SLOT|R_390_RELATIVE 6779df224SSven SchnelleARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT 7779df224SSven Schnelle 8779df224SSven Schnelleinclude $(srctree)/lib/vdso/Makefile 9779df224SSven Schnelleobj-vdso32 = vdso_user_wrapper-32.o note-32.o 10779df224SSven Schnelle 11779df224SSven Schnelle# Build rules 12779df224SSven Schnelle 13779df224SSven Schnelletargets := $(obj-vdso32) vdso32.so vdso32.so.dbg 14779df224SSven Schnelleobj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) 15779df224SSven Schnelle 16779df224SSven SchnelleKBUILD_AFLAGS += -DBUILD_VDSO 17779df224SSven SchnelleKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 18779df224SSven Schnelle 19779df224SSven SchnelleKBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) 20779df224SSven SchnelleKBUILD_AFLAGS_32 += -m31 -s 21779df224SSven Schnelle 22779df224SSven SchnelleKBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) 23779df224SSven SchnelleKBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin 24779df224SSven Schnelle 25*7b737adcSMasahiro YamadaLDFLAGS_vdso32.so.dbg += -fPIC -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# Disable gcov profiling, ubsan and kasan for VDSO code 36779df224SSven SchnelleGCOV_PROFILE := n 37779df224SSven SchnelleUBSAN_SANITIZE := n 38779df224SSven SchnelleKASAN_SANITIZE := n 39e37b3dd0SIlya LeoshkevichKCSAN_SANITIZE := n 40779df224SSven Schnelle 41779df224SSven Schnelle# Force dependency (incbin is bad) 42779df224SSven Schnelle$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so 43779df224SSven Schnelle 44779df224SSven Schnelle$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE 45779df224SSven Schnelle $(call if_changed,ld) 46779df224SSven Schnelle 47779df224SSven Schnelle# strip rule for the .so file 48779df224SSven Schnelle$(obj)/%.so: OBJCOPYFLAGS := -S 49779df224SSven Schnelle$(obj)/%.so: $(obj)/%.so.dbg FORCE 50779df224SSven Schnelle $(call if_changed,objcopy) 51779df224SSven Schnelle 52779df224SSven Schnelle$(obj-vdso32): %-32.o: %.S FORCE 53779df224SSven Schnelle $(call if_changed_dep,vdso32as) 54779df224SSven Schnelle 55779df224SSven Schnelle# actual build commands 56779df224SSven Schnellequiet_cmd_vdso32as = VDSO32A $@ 57779df224SSven Schnelle cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< 58779df224SSven Schnellequiet_cmd_vdso32cc = VDSO32C $@ 59779df224SSven Schnelle cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $< 60779df224SSven Schnelle 61779df224SSven Schnelle# install commands for the unstripped file 62779df224SSven Schnellequiet_cmd_vdso_install = INSTALL $@ 63779df224SSven Schnelle cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ 64779df224SSven Schnelle 65779df224SSven Schnellevdso32.so: $(obj)/vdso32.so.dbg 66779df224SSven Schnelle @mkdir -p $(MODLIB)/vdso 67779df224SSven Schnelle $(call cmd,vdso_install) 68779df224SSven Schnelle 69779df224SSven Schnellevdso_install: vdso32.so 70779df224SSven Schnelle 71779df224SSven Schnelle# Generate VDSO offsets using helper script 72779df224SSven Schnellegen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh 73779df224SSven Schnellequiet_cmd_vdsosym = VDSOSYM $@ 74779df224SSven Schnelle cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 75779df224SSven Schnelle 76779df224SSven Schnelleinclude/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE 77779df224SSven Schnelle $(call if_changed,vdsosym) 78