1 # Include the generic Makefile to check the bu
2 include $(srctree)/lib/vdso/Makefile
3
4 KCOV_INSTRUMENT := n
5
6 # Disable gcov profiling, ubsan and kasan for
7 GCOV_PROFILE := n
8 UBSAN_SANITIZE := n
9 KASAN_SANITIZE := n
10 KCSAN_SANITIZE := n
11
12 obj-vdso64 = note.o sigtramp.o restart_syscall
13 obj-cvdso64 = vdso64_generic.o
14
15 # Build rules
16
17 targets := $(obj-vdso64) $(obj-cvdso64) vdso64
18 obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso
19 obj-cvdso64 := $(addprefix $(obj)/, $(obj-cvds
20
21 VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE)
22 CFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS
23
24 ccflags-y := -shared -fno-common -fno-builtin
25 ccflags-y += -nostdlib -Wl,-soname=linux-vdso6
26 $(call ld-option, -Wl$(comma)-
27 asflags-y := -D__VDSO64__ -s
28
29 KBUILD_AFLAGS += -DBUILD_VDSO
30 KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH
31
32 VDSO_LIBGCC := $(shell $(CC) -print-libgcc-fil
33
34 obj-y += vdso64_wrapper.o
35 extra-y += vdso64.lds
36 CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
37
38 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so FOR
39
40 # Force dependency (incbin is bad)
41 # link rule for the .so file, .lds has to be f
42 $(obj)/vdso64.so: $(obj)/vdso64.lds $(obj-vdso
43 $(call if_changed,vdso64ld)
44
45 # assembly rules for the .S files
46 $(obj-vdso64): %.o: %.S FORCE
47 $(call if_changed_dep,vdso64as)
48 $(obj-cvdso64): %.o: %.c FORCE
49 $(call if_changed_dep,vdso64cc)
50
51 # actual build commands
52 quiet_cmd_vdso64ld = VDSO64L $@
53 cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $
54 quiet_cmd_vdso64as = VDSO64A $@
55 cmd_vdso64as = $(CC) $(a_flags) -c -o $@
56 quiet_cmd_vdso64cc = VDSO64C $@
57 cmd_vdso64cc = $(CC) $(c_flags) -c -o $@
58
59 # Generate VDSO offsets using helper script
60 gen-vdsosym := $(src)/gen_vdso_offsets.sh
61 quiet_cmd_vdsosym = VDSOSYM $@
62 cmd_vdsosym = $(NM) $< | $(gen-vdsosym
63
64 include/generated/vdso64-offsets.h: $(obj)/vds
65 $(call if_changed,vdsosym)
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