arch/parisc/kernel/vdso64/Makefile

   1 # Include the generic Makefile to check the built vdso.
   2 include $(srctree)/lib/vdso/Makefile
   3
   4 KCOV_INSTRUMENT := n
   5
   6 # Disable gcov profiling, ubsan and kasan for VDSO code
   7 GCOV_PROFILE := n
   8 UBSAN_SANITIZE := n
   9 KASAN_SANITIZE := n
  10 KCSAN_SANITIZE := n
  11
  12 obj-vdso64 = note.o sigtramp.o restart_syscall.o
  13 obj-cvdso64 = vdso64_generic.o
  14
  15 # Build rules
  16
  17 targets := $(obj-vdso64) $(obj-cvdso64) vdso64.so
  18 obj-vdso64  := $(addprefix $(obj)/, $(obj-vdso64))
  19 obj-cvdso64 := $(addprefix $(obj)/, $(obj-cvdso64))
  20
  21 VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE)
  22 CFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE)
  23
  24 ccflags-y := -shared -fno-common -fno-builtin
  25 ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
  26                 $(call ld-option, -Wl$(comma)--hash-style=sysv)
  27 asflags-y := -D__VDSO64__ -s
  28
  29 KBUILD_AFLAGS += -DBUILD_VDSO
  30 KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING
  31
  32 VDSO_LIBGCC := $(shell $(CC) -print-libgcc-file-name)
  33
  34 obj-y += vdso64_wrapper.o
  35 extra-y += vdso64.lds
  36 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
  37
  38 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so FORCE
  39
  40 # Force dependency (incbin is bad)
  41 # link rule for the .so file, .lds has to be first
  42 $(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso64) $(obj-cvdso64) $(VDSO_LIBGCC) FORCE
  43         $(call if_changed,vdso64ld)
  44
  45 # assembly rules for the .S files
  46 $(obj-vdso64): %.o: %.S FORCE
  47         $(call if_changed_dep,vdso64as)
  48 $(obj-cvdso64): %.o: %.c FORCE
  49         $(call if_changed_dep,vdso64cc)
  50
  51 # actual build commands
  52 quiet_cmd_vdso64ld = VDSO64L $@
  53       cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@
  54 quiet_cmd_vdso64as = VDSO64A $@
  55       cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
  56 quiet_cmd_vdso64cc = VDSO64C $@
  57       cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $<
  58
  59 # Generate VDSO offsets using helper script
  60 gen-vdsosym := $(src)/gen_vdso_offsets.sh
  61 quiet_cmd_vdsosym = VDSOSYM $@
  62         cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
  63
  64 include/generated/vdso64-offsets.h: $(obj)/vdso64.so FORCE
  65         $(call if_changed,vdsosym)