1 # SPDX-License-Identifier: GPL-2.0
3 # List of files in the vdso, has to be asm only for now
5 obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o
10 VDSOCC := $(CROSS32_COMPILE)gcc
20 targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
21 obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
27 ccflags-y := -shared -fno-common -fno-builtin -nostdlib \
28 -Wl,-soname=linux-vdso32.so.1 -Wl,--hash-style=both
29 asflags-y := -D__VDSO32__ -s
31 obj-y += vdso32_wrapper.o
33 CPPFLAGS_vdso32.lds += -P -C -Upowerpc
35 # Force dependency (incbin is bad)
36 $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
38 # link rule for the .so file, .lds has to be first
39 $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
40 $(call if_changed,vdso32ld)
42 # strip rule for the .so file
43 $(obj)/%.so: OBJCOPYFLAGS := -S
44 $(obj)/%.so: $(obj)/%.so.dbg FORCE
45 $(call if_changed,objcopy)
47 # assembly rules for the .S files
48 $(obj-vdso32): %.o: %.S FORCE
49 $(call if_changed_dep,vdso32as)
51 # actual build commands
52 quiet_cmd_vdso32ld = VDSO32L $@
53 cmd_vdso32ld = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
54 quiet_cmd_vdso32as = VDSO32A $@
55 cmd_vdso32as = $(VDSOCC) $(a_flags) $(CC32FLAGS) -c -o $@ $<
57 # install commands for the unstripped file
58 quiet_cmd_vdso_install = INSTALL $@
59 cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
61 vdso32.so: $(obj)/vdso32.so.dbg
62 @mkdir -p $(MODLIB)/vdso
63 $(call cmd,vdso_install)
65 vdso_install: vdso32.so