1 # List of files in the vdso, has to be asm only for now
3 obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o
7 targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
8 obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
10 KBUILD_AFLAGS_31 := $(filter-out -m64,$(KBUILD_AFLAGS))
11 KBUILD_AFLAGS_31 += -m31 -s
13 KBUILD_CFLAGS_31 := $(filter-out -m64,$(KBUILD_CFLAGS))
14 KBUILD_CFLAGS_31 += -m31 -fPIC -shared -fno-common -fno-builtin
15 KBUILD_CFLAGS_31 += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
16 $(call ld-option, -Wl$(comma)--hash-style=sysv)
18 $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_31)
19 $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_31)
21 obj-y += vdso32_wrapper.o
23 CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
25 # Force dependency (incbin is bad)
26 $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
28 # link rule for the .so file, .lds has to be first
29 $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32)
30 $(call if_changed,vdso32ld)
32 # strip rule for the .so file
33 $(obj)/%.so: OBJCOPYFLAGS := -S
34 $(obj)/%.so: $(obj)/%.so.dbg FORCE
35 $(call if_changed,objcopy)
37 # assembly rules for the .S files
38 $(obj-vdso32): %.o: %.S
39 $(call if_changed_dep,vdso32as)
41 # actual build commands
42 quiet_cmd_vdso32ld = VDSO32L $@
43 cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
44 quiet_cmd_vdso32as = VDSO32A $@
45 cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $<
47 # install commands for the unstripped file
48 quiet_cmd_vdso_install = INSTALL $@
49 cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
51 vdso32.so: $(obj)/vdso32.so.dbg
52 @mkdir -p $(MODLIB)/vdso
53 $(call cmd,vdso_install)
55 vdso_install: vdso32.so