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 cc-ldoption
, -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 # Disable gcov profiling for VDSO code
28 # Force dependency (incbin is bad)
29 $(obj
)/vdso32_wrapper.o
: $(obj
)/vdso32.so
31 # link rule for the .so file, .lds has to be first
32 $(obj
)/vdso32.so.dbg
: $(src
)/vdso32.lds
$(obj-vdso32
)
33 $(call if_changed
,vdso32ld
)
35 # strip rule for the .so file
36 $(obj
)/%.so
: OBJCOPYFLAGS
:= -S
37 $(obj
)/%.so
: $(obj
)/%.so.dbg FORCE
38 $(call if_changed
,objcopy
)
40 # assembly rules for the .S files
41 $(obj-vdso32
): %.o
: %.S
42 $(call if_changed_dep
,vdso32as
)
44 # actual build commands
45 quiet_cmd_vdso32ld
= VDSO32L
$@
46 cmd_vdso32ld
= $(CC
) $(c_flags
) -Wl
,-T
$^
-o
$@
47 quiet_cmd_vdso32as
= VDSO32A
$@
48 cmd_vdso32as
= $(CC
) $(a_flags
) -c
-o
$@
$<
50 # install commands for the unstripped file
51 quiet_cmd_vdso_install
= INSTALL
$@
52 cmd_vdso_install
= cp
$(obj
)/$@.dbg
$(MODLIB
)/vdso
/$@
54 vdso32.so
: $(obj
)/vdso32.so.dbg
55 @mkdir
-p
$(MODLIB
)/vdso
56 $(call cmd
,vdso_install
)
58 vdso_install
: vdso32.so
