1*779df224SSven Schnelle# SPDX-License-Identifier: GPL-2.0 2*779df224SSven Schnelle# List of files in the vdso 3*779df224SSven Schnelle 4*779df224SSven SchnelleKCOV_INSTRUMENT := n 5*779df224SSven SchnelleARCH_REL_TYPE_ABS := R_390_COPY|R_390_GLOB_DAT|R_390_JMP_SLOT|R_390_RELATIVE 6*779df224SSven SchnelleARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT 7*779df224SSven Schnelle 8*779df224SSven Schnelleinclude $(srctree)/lib/vdso/Makefile 9*779df224SSven Schnelleobj-vdso32 = vdso_user_wrapper-32.o note-32.o 10*779df224SSven Schnelle 11*779df224SSven Schnelle# Build rules 12*779df224SSven Schnelle 13*779df224SSven Schnelletargets := $(obj-vdso32) vdso32.so vdso32.so.dbg 14*779df224SSven Schnelleobj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) 15*779df224SSven Schnelle 16*779df224SSven SchnelleKBUILD_AFLAGS += -DBUILD_VDSO 17*779df224SSven SchnelleKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 18*779df224SSven Schnelle 19*779df224SSven SchnelleKBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) 20*779df224SSven SchnelleKBUILD_AFLAGS_32 += -m31 -s 21*779df224SSven Schnelle 22*779df224SSven SchnelleKBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) 23*779df224SSven SchnelleKBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin 24*779df224SSven Schnelle 25*779df224SSven SchnelleLDFLAGS_vdso32.so.dbg += -fPIC -shared -nostdlib -soname=linux-vdso32.so.1 \ 26*779df224SSven Schnelle --hash-style=both --build-id=sha1 -melf_s390 -T 27*779df224SSven Schnelle 28*779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) 29*779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32) 30*779df224SSven Schnelle 31*779df224SSven Schnelleobj-y += vdso32_wrapper.o 32*779df224SSven SchnelleCPPFLAGS_vdso32.lds += -P -C -U$(ARCH) 33*779df224SSven Schnelle 34*779df224SSven Schnelle# Disable gcov profiling, ubsan and kasan for VDSO code 35*779df224SSven SchnelleGCOV_PROFILE := n 36*779df224SSven SchnelleUBSAN_SANITIZE := n 37*779df224SSven SchnelleKASAN_SANITIZE := n 38*779df224SSven Schnelle 39*779df224SSven Schnelle# Force dependency (incbin is bad) 40*779df224SSven Schnelle$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so 41*779df224SSven Schnelle 42*779df224SSven Schnelle$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE 43*779df224SSven Schnelle $(call if_changed,ld) 44*779df224SSven Schnelle 45*779df224SSven Schnelle# strip rule for the .so file 46*779df224SSven Schnelle$(obj)/%.so: OBJCOPYFLAGS := -S 47*779df224SSven Schnelle$(obj)/%.so: $(obj)/%.so.dbg FORCE 48*779df224SSven Schnelle $(call if_changed,objcopy) 49*779df224SSven Schnelle 50*779df224SSven Schnelle$(obj-vdso32): %-32.o: %.S FORCE 51*779df224SSven Schnelle $(call if_changed_dep,vdso32as) 52*779df224SSven Schnelle 53*779df224SSven Schnelle# actual build commands 54*779df224SSven Schnellequiet_cmd_vdso32as = VDSO32A $@ 55*779df224SSven Schnelle cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< 56*779df224SSven Schnellequiet_cmd_vdso32cc = VDSO32C $@ 57*779df224SSven Schnelle cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $< 58*779df224SSven Schnelle 59*779df224SSven Schnelle# install commands for the unstripped file 60*779df224SSven Schnellequiet_cmd_vdso_install = INSTALL $@ 61*779df224SSven Schnelle cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ 62*779df224SSven Schnelle 63*779df224SSven Schnellevdso32.so: $(obj)/vdso32.so.dbg 64*779df224SSven Schnelle @mkdir -p $(MODLIB)/vdso 65*779df224SSven Schnelle $(call cmd,vdso_install) 66*779df224SSven Schnelle 67*779df224SSven Schnellevdso_install: vdso32.so 68*779df224SSven Schnelle 69*779df224SSven Schnelle# Generate VDSO offsets using helper script 70*779df224SSven Schnellegen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh 71*779df224SSven Schnellequiet_cmd_vdsosym = VDSOSYM $@ 72*779df224SSven Schnelle cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 73*779df224SSven Schnelle 74*779df224SSven Schnelleinclude/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE 75*779df224SSven Schnelle $(call if_changed,vdsosym) 76