2021-05-26 19:09:36 +00:00
|
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
|
|
|
|
|
# List of files in the vdso, has to be asm only for now
|
|
|
|
|
|
2021-10-02 16:09:28 +00:00
|
|
|
ARCH_REL_TYPE_ABS := R_PPC_JUMP_SLOT|R_PPC_GLOB_DAT|R_PPC_ADDR32|R_PPC_ADDR24|R_PPC_ADDR16|R_PPC_ADDR16_LO|R_PPC_ADDR16_HI|R_PPC_ADDR16_HA|R_PPC_ADDR14|R_PPC_ADDR14_BRTAKEN|R_PPC_ADDR14_BRNTAKEN|R_PPC_REL24
|
|
|
|
|
include $(srctree)/lib/vdso/Makefile
|
|
|
|
|
|
2021-05-26 19:09:36 +00:00
|
|
|
obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o getcpu.o
|
|
|
|
|
|
2021-10-02 16:09:28 +00:00
|
|
|
ifneq ($(c-gettimeofday-y),)
|
|
|
|
|
CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
|
|
|
|
|
CFLAGS_vgettimeofday.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
|
|
|
|
|
CFLAGS_vgettimeofday.o += $(call cc-option, -fno-stack-protector)
|
|
|
|
|
CFLAGS_vgettimeofday.o += -DDISABLE_BRANCH_PROFILING
|
|
|
|
|
CFLAGS_vgettimeofday.o += -ffreestanding -fasynchronous-unwind-tables
|
|
|
|
|
CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE)
|
|
|
|
|
endif
|
|
|
|
|
|
2021-05-26 19:09:36 +00:00
|
|
|
# Build rules
|
|
|
|
|
|
|
|
|
|
ifdef CROSS32_COMPILE
|
|
|
|
|
VDSOCC := $(CROSS32_COMPILE)gcc
|
|
|
|
|
else
|
|
|
|
|
VDSOCC := $(CC)
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
CC32FLAGS :=
|
|
|
|
|
ifdef CONFIG_PPC64
|
|
|
|
|
CC32FLAGS += -m32
|
2021-10-02 16:09:28 +00:00
|
|
|
KBUILD_CFLAGS := $(filter-out -mcmodel=medium -mabi=elfv1 -mabi=elfv2 -mcall-aixdesc,$(KBUILD_CFLAGS))
|
2021-05-26 19:09:36 +00:00
|
|
|
endif
|
|
|
|
|
|
2021-10-02 16:09:28 +00:00
|
|
|
targets := $(obj-vdso32) vdso32.so.dbg vgettimeofday.o
|
2021-05-26 19:09:36 +00:00
|
|
|
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
|
|
|
|
|
|
|
|
|
|
GCOV_PROFILE := n
|
|
|
|
|
KCOV_INSTRUMENT := n
|
|
|
|
|
UBSAN_SANITIZE := n
|
2021-10-02 16:09:28 +00:00
|
|
|
KASAN_SANITIZE := n
|
2021-05-26 19:09:36 +00:00
|
|
|
|
|
|
|
|
ccflags-y := -shared -fno-common -fno-builtin -nostdlib \
|
|
|
|
|
-Wl,-soname=linux-vdso32.so.1 -Wl,--hash-style=both
|
|
|
|
|
asflags-y := -D__VDSO32__ -s
|
|
|
|
|
|
|
|
|
|
obj-y += vdso32_wrapper.o
|
|
|
|
|
targets += vdso32.lds
|
|
|
|
|
CPPFLAGS_vdso32.lds += -P -C -Upowerpc
|
|
|
|
|
|
|
|
|
|
# link rule for the .so file, .lds has to be first
|
2021-10-02 16:09:28 +00:00
|
|
|
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday.o FORCE
|
|
|
|
|
$(call if_changed,vdso32ld_and_check)
|
2021-05-26 19:09:36 +00:00
|
|
|
|
|
|
|
|
# assembly rules for the .S files
|
|
|
|
|
$(obj-vdso32): %.o: %.S FORCE
|
|
|
|
|
$(call if_changed_dep,vdso32as)
|
2021-10-02 16:09:28 +00:00
|
|
|
$(obj)/vgettimeofday.o: %.o: %.c FORCE
|
|
|
|
|
$(call if_changed_dep,vdso32cc)
|
|
|
|
|
|
|
|
|
|
# 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)
|
2021-05-26 19:09:36 +00:00
|
|
|
|
|
|
|
|
# actual build commands
|
2021-10-02 16:09:28 +00:00
|
|
|
quiet_cmd_vdso32ld_and_check = VDSO32L $@
|
|
|
|
|
cmd_vdso32ld_and_check = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) ; $(cmd_vdso_check)
|
2021-05-26 19:09:36 +00:00
|
|
|
quiet_cmd_vdso32as = VDSO32A $@
|
|
|
|
|
cmd_vdso32as = $(VDSOCC) $(a_flags) $(CC32FLAGS) -c -o $@ $<
|
2021-10-02 16:09:28 +00:00
|
|
|
quiet_cmd_vdso32cc = VDSO32C $@
|
|
|
|
|
cmd_vdso32cc = $(VDSOCC) $(c_flags) $(CC32FLAGS) -c -o $@ $<
|
