summaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel/vdso64/Makefile
blob: 32ebb3522ea19c90165fac2909f20f618e428e67 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
# SPDX-License-Identifier: GPL-2.0
# List of files in the vdso, has to be asm only for now

obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o

# Build rules

targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))

GCOV_PROFILE := n
KCOV_INSTRUMENT := n
UBSAN_SANITIZE := n

ccflags-y := -shared -fno-common -fno-builtin -nostdlib \
	-Wl,-soname=linux-vdso64.so.1 -Wl,--hash-style=both
asflags-y := -D__VDSO64__ -s

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
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
	$(call if_changed,vdso64ld)

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

# actual build commands
quiet_cmd_vdso64ld = VDSO64L $@
      cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)

# 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)

vdso_install: vdso64.so