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Commit | Line | Data |
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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | # List of files in the vdso, has to be asm only for now |
3 | ||
18ad51dd | 4 | obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o |
1da177e4 LT |
5 | |
6 | # Build rules | |
7 | ||
8150caad | 8 | targets := $(obj-vdso64) vdso64.so vdso64.so.dbg |
1da177e4 LT |
9 | obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) |
10 | ||
a15098c9 | 11 | GCOV_PROFILE := n |
bf76f73c | 12 | UBSAN_SANITIZE := n |
a15098c9 | 13 | |
4108d9ba | 14 | ccflags-y := -shared -fno-common -fno-builtin |
15 | ccflags-y += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ | |
787b393c | 16 | $(call cc-ldoption, -Wl$(comma)--hash-style=both) |
4108d9ba | 17 | asflags-y := -D__VDSO64__ -s |
1da177e4 LT |
18 | |
19 | obj-y += vdso64_wrapper.o | |
20 | extra-y += vdso64.lds | |
21 | CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) | |
22 | ||
23 | # Force dependency (incbin is bad) | |
24 | $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so | |
25 | ||
26 | # link rule for the .so file, .lds has to be first | |
b9a4a0d0 | 27 | $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE |
1da177e4 LT |
28 | $(call if_changed,vdso64ld) |
29 | ||
8150caad RM |
30 | # strip rule for the .so file |
31 | $(obj)/%.so: OBJCOPYFLAGS := -S | |
32 | $(obj)/%.so: $(obj)/%.so.dbg FORCE | |
33 | $(call if_changed,objcopy) | |
34 | ||
1da177e4 LT |
35 | # actual build commands |
36 | quiet_cmd_vdso64ld = VDSO64L $@ | |
b9a4a0d0 | 37 | cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) |
1da177e4 | 38 | |
8150caad RM |
39 | # install commands for the unstripped file |
40 | quiet_cmd_vdso_install = INSTALL $@ | |
41 | cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ | |
42 | ||
43 | vdso64.so: $(obj)/vdso64.so.dbg | |
44 | @mkdir -p $(MODLIB)/vdso | |
45 | $(call cmd,vdso_install) | |
1da177e4 | 46 | |
8150caad | 47 | vdso_install: vdso64.so |