Makefile 1.4 KB
Newer Older
L
Linus Torvalds 已提交
1 2
# List of files in the vdso, has to be asm only for now

3
obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o
L
Linus Torvalds 已提交
4 5 6

# Build rules

7
targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
L
Linus Torvalds 已提交
8 9
obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))

M
Michael Ellerman 已提交
10
GCOV_PROFILE := n
D
Daniel Axtens 已提交
11
UBSAN_SANITIZE := n
M
Michael Ellerman 已提交
12

13 14
ccflags-y := -shared -fno-common -fno-builtin
ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
15
		$(call cc-ldoption, -Wl$(comma)--hash-style=both)
16
asflags-y := -D__VDSO64__ -s
L
Linus Torvalds 已提交
17 18 19 20 21 22 23 24 25

obj-y += vdso64_wrapper.o
extra-y += vdso64.lds
CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)

# Force dependency (incbin is bad)
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so

# link rule for the .so file, .lds has to be first
26
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
L
Linus Torvalds 已提交
27 28
	$(call if_changed,vdso64ld)

29 30 31 32 33
# strip rule for the .so file
$(obj)/%.so: OBJCOPYFLAGS := -S
$(obj)/%.so: $(obj)/%.so.dbg FORCE
	$(call if_changed,objcopy)

L
Linus Torvalds 已提交
34
# assembly rules for the .S files
35
$(obj-vdso64): %.o: %.S FORCE
L
Linus Torvalds 已提交
36 37 38 39
	$(call if_changed_dep,vdso64as)

# actual build commands
quiet_cmd_vdso64ld = VDSO64L $@
40
      cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
L
Linus Torvalds 已提交
41 42 43
quiet_cmd_vdso64as = VDSO64A $@
      cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<

44 45 46 47 48 49 50
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
      cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@

vdso64.so: $(obj)/vdso64.so.dbg
	@mkdir -p $(MODLIB)/vdso
	$(call cmd,vdso_install)
L
Linus Torvalds 已提交
51

52
vdso_install: vdso64.so