arch/s390/kernel/vdso64/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # List of files in the vdso
   3
   4 KCOV_INSTRUMENT := n
   5 ARCH_REL_TYPE_ABS := R_390_COPY|R_390_GLOB_DAT|R_390_JMP_SLOT|R_390_RELATIVE
   6 ARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT
   7
   8 include $(srctree)/lib/vdso/Makefile
   9 obj-vdso64 = vdso_user_wrapper.o note.o getcpu.o
  10 obj-cvdso64 = vdso64_generic.o
  11 CFLAGS_REMOVE_vdso64_generic.o = -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE)
  12
  13 # Build rules
  14
  15 targets := $(obj-vdso64) $(obj-cvdso64) vdso64.so vdso64.so.dbg
  16 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
  17 obj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64))
  18
  19 KBUILD_AFLAGS += -DBUILD_VDSO
  20 KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING
  21
  22 KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS))
  23 KBUILD_AFLAGS_64 += -m64 -s
  24
  25 KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
  26 KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin
  27 ldflags-y := -fPIC -shared -nostdlib -soname=linux-vdso64.so.1 \
  28              --hash-style=both --build-id=sha1 -T
  29
  30 $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64)
  31 $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64)
  32
  33 obj-y += vdso64_wrapper.o
  34 targets += vdso64.lds
  35 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
  36
  37 # Disable gcov profiling, ubsan and kasan for VDSO code
  38 GCOV_PROFILE := n
  39 UBSAN_SANITIZE := n
  40 KASAN_SANITIZE := n
  41
  42 # Force dependency (incbin is bad)
  43 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
  44
  45 # link rule for the .so file, .lds has to be first
  46 $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) FORCE
  47         $(call if_changed,ld)
  48
  49 # strip rule for the .so file
  50 $(obj)/%.so: OBJCOPYFLAGS := -S
  51 $(obj)/%.so: $(obj)/%.so.dbg FORCE
  52         $(call if_changed,objcopy)
  53
  54 # assembly rules for the .S files
  55 $(obj-vdso64): %.o: %.S FORCE
  56         $(call if_changed_dep,vdso64as)
  57
  58 $(obj-cvdso64): %.o: %.c FORCE
  59         $(call if_changed_dep,vdso64cc)
  60
  61 # actual build commands
  62 quiet_cmd_vdso64as = VDSO64A $@
  63       cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
  64 quiet_cmd_vdso64cc = VDSO64C $@
  65       cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $<
  66
  67 # install commands for the unstripped file
  68 quiet_cmd_vdso_install = INSTALL $@
  69       cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
  70
  71 vdso64.so: $(obj)/vdso64.so.dbg
  72         @mkdir -p $(MODLIB)/vdso
  73         $(call cmd,vdso_install)
  74
  75 vdso_install: vdso64.so