xref: /linux/arch/s390/kernel/vdso32/Makefile (revision bbfd5594756011167b8f8de9a00e0c946afda1e6)
1779df224SSven Schnelle# SPDX-License-Identifier: GPL-2.0
2779df224SSven Schnelle# List of files in the vdso
3779df224SSven Schnelle
4aff69273SFangrui Song# Include the generic Makefile to check the built vdso.
5*127b0e05SThomas Weißschuhinclude $(srctree)/lib/vdso/Makefile.include
6779df224SSven Schnelleobj-vdso32 = vdso_user_wrapper-32.o note-32.o
7779df224SSven Schnelle
8779df224SSven Schnelle# Build rules
9779df224SSven Schnelle
10779df224SSven Schnelletargets := $(obj-vdso32) vdso32.so vdso32.so.dbg
11779df224SSven Schnelleobj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
12779df224SSven Schnelle
13779df224SSven SchnelleKBUILD_AFLAGS += -DBUILD_VDSO
14779df224SSven SchnelleKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING
15779df224SSven Schnelle
16779df224SSven SchnelleKBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
17779df224SSven SchnelleKBUILD_AFLAGS_32 += -m31 -s
18779df224SSven Schnelle
19779df224SSven SchnelleKBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
20185445c7SHeiko CarstensKBUILD_CFLAGS_32 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS))
21d15e4314SSumanth KorikkarKBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32))
2210f70525SJens RemusKBUILD_CFLAGS_32 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_32))
2310f70525SJens RemusKBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -fasynchronous-unwind-tables
24779df224SSven Schnelle
250628c039SNathan ChancellorLDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1 \
26779df224SSven Schnelle	--hash-style=both --build-id=sha1 -melf_s390 -T
27779df224SSven Schnelle
28779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
29779df224SSven Schnelle$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
30779df224SSven Schnelle
31779df224SSven Schnelleobj-y += vdso32_wrapper.o
3298f7cd23SSven Schnelletargets += vdso32.lds
33779df224SSven SchnelleCPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
34779df224SSven Schnelle
35779df224SSven Schnelle# Force dependency (incbin is bad)
36779df224SSven Schnelle$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
37779df224SSven Schnelle
380dd0bbc2SSven Schnellequiet_cmd_vdso_and_check = VDSO    $@
390dd0bbc2SSven Schnelle      cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check)
400dd0bbc2SSven Schnelle
41b957df3bSMasahiro Yamada$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) FORCE
420dd0bbc2SSven Schnelle	$(call if_changed,vdso_and_check)
43779df224SSven Schnelle
44779df224SSven Schnelle# strip rule for the .so file
45779df224SSven Schnelle$(obj)/%.so: OBJCOPYFLAGS := -S
46779df224SSven Schnelle$(obj)/%.so: $(obj)/%.so.dbg FORCE
47779df224SSven Schnelle	$(call if_changed,objcopy)
48779df224SSven Schnelle
49779df224SSven Schnelle$(obj-vdso32): %-32.o: %.S FORCE
50779df224SSven Schnelle	$(call if_changed_dep,vdso32as)
51779df224SSven Schnelle
52779df224SSven Schnelle# actual build commands
53779df224SSven Schnellequiet_cmd_vdso32as = VDSO32A $@
54779df224SSven Schnelle      cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $<
55779df224SSven Schnellequiet_cmd_vdso32cc = VDSO32C $@
56779df224SSven Schnelle      cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $<
57779df224SSven Schnelle
58779df224SSven Schnelle# Generate VDSO offsets using helper script
59b1992c37SMasahiro Yamadagen-vdsosym := $(src)/gen_vdso_offsets.sh
60779df224SSven Schnellequiet_cmd_vdsosym = VDSOSYM $@
61779df224SSven Schnelle	cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
62779df224SSven Schnelle
63779df224SSven Schnelleinclude/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE
64779df224SSven Schnelle	$(call if_changed,vdsosym)
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