78 lines
2.2 KiB
Makefile
78 lines
2.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
# List of files in the vdso
|
|
|
|
KCOV_INSTRUMENT := n
|
|
ARCH_REL_TYPE_ABS := R_390_COPY|R_390_GLOB_DAT|R_390_JMP_SLOT|R_390_RELATIVE
|
|
ARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT
|
|
|
|
include $(srctree)/lib/vdso/Makefile
|
|
obj-vdso32 = vdso_user_wrapper-32.o note-32.o
|
|
|
|
# Build rules
|
|
|
|
targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
|
|
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
|
|
|
|
KBUILD_AFLAGS += -DBUILD_VDSO
|
|
KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING
|
|
|
|
KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
|
|
KBUILD_AFLAGS_32 += -m31 -s
|
|
|
|
KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
|
|
KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin
|
|
|
|
LDFLAGS_vdso32.so.dbg += -fPIC -shared -soname=linux-vdso32.so.1 \
|
|
--hash-style=both --build-id=sha1 -melf_s390 -T
|
|
|
|
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
|
|
$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
|
|
|
|
obj-y += vdso32_wrapper.o
|
|
targets += vdso32.lds
|
|
CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
|
|
|
|
# Disable gcov profiling, ubsan and kasan for VDSO code
|
|
GCOV_PROFILE := n
|
|
UBSAN_SANITIZE := n
|
|
KASAN_SANITIZE := n
|
|
KCSAN_SANITIZE := n
|
|
|
|
# Force dependency (incbin is bad)
|
|
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
|
|
|
|
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
|
|
$(call if_changed,ld)
|
|
|
|
# strip rule for the .so file
|
|
$(obj)/%.so: OBJCOPYFLAGS := -S
|
|
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
$(obj-vdso32): %-32.o: %.S FORCE
|
|
$(call if_changed_dep,vdso32as)
|
|
|
|
# actual build commands
|
|
quiet_cmd_vdso32as = VDSO32A $@
|
|
cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $<
|
|
quiet_cmd_vdso32cc = VDSO32C $@
|
|
cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $<
|
|
|
|
# install commands for the unstripped file
|
|
quiet_cmd_vdso_install = INSTALL $@
|
|
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
|
|
|
|
vdso32.so: $(obj)/vdso32.so.dbg
|
|
@mkdir -p $(MODLIB)/vdso
|
|
$(call cmd,vdso_install)
|
|
|
|
vdso_install: vdso32.so
|
|
|
|
# Generate VDSO offsets using helper script
|
|
gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
|
|
quiet_cmd_vdsosym = VDSOSYM $@
|
|
cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
|
|
|
|
include/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE
|
|
$(call if_changed,vdsosym)
|