1 # 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
7 targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
8 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
10 EXTRA_CFLAGS := -shared -fno-common -fno-builtin
11 EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
12 $(call ld-option, -Wl$(comma)--hash-style=sysv)
13 EXTRA_AFLAGS := -D__VDSO64__ -s
15 obj-y += vdso64_wrapper.o
17 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
19 # Force dependency (incbin is bad)
20 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
22 # link rule for the .so file, .lds has to be first
23 $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64)
24 $(call if_changed,vdso64ld)
26 # strip rule for the .so file
27 $(obj)/%.so: OBJCOPYFLAGS := -S
28 $(obj)/%.so: $(obj)/%.so.dbg FORCE
29 $(call if_changed,objcopy)
31 # assembly rules for the .S files
32 $(obj-vdso64): %.o: %.S
33 $(call if_changed_dep,vdso64as)
35 # actual build commands
36 quiet_cmd_vdso64ld = VDSO64L $@
37 cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
38 quiet_cmd_vdso64as = VDSO64A $@
39 cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
41 # install commands for the unstripped file
42 quiet_cmd_vdso_install = INSTALL $@
43 cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
45 vdso64.so: $(obj)/vdso64.so.dbg
46 @mkdir -p $(MODLIB)/vdso
47 $(call cmd,vdso_install)
49 vdso_install: vdso64.so