1# SPDX-License-Identifier: GPL-2.0 2 3# List of files in the vdso, has to be asm only for now 4 5obj-vdso32-$(CONFIG_PPC64) = getcpu.o 6obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o \ 7 $(obj-vdso32-y) 8 9# Build rules 10 11ifeq ($(CONFIG_PPC32),y) 12CROSS32CC := $(CC) 13endif 14 15targets := $(obj-vdso32) vdso32.so vdso32.so.dbg 16obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) 17 18GCOV_PROFILE := n 19UBSAN_SANITIZE := n 20 21ccflags-y := -shared -fno-common -fno-builtin 22ccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ 23 $(call cc-ldoption, -Wl$(comma)--hash-style=both) 24asflags-y := -D__VDSO32__ -s 25 26obj-y += vdso32_wrapper.o 27extra-y += vdso32.lds 28CPPFLAGS_vdso32.lds += -P -C -Upowerpc 29 30# Force dependency (incbin is bad) 31$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so 32 33# link rule for the .so file, .lds has to be first 34$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE 35 $(call if_changed,vdso32ld) 36 37# strip rule for the .so file 38$(obj)/%.so: OBJCOPYFLAGS := -S 39$(obj)/%.so: $(obj)/%.so.dbg FORCE 40 $(call if_changed,objcopy) 41 42# assembly rules for the .S files 43$(obj-vdso32): %.o: %.S FORCE 44 $(call if_changed_dep,vdso32as) 45 46# actual build commands 47quiet_cmd_vdso32ld = VDSO32L $@ 48 cmd_vdso32ld = $(CROSS32CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) 49quiet_cmd_vdso32as = VDSO32A $@ 50 cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $< 51 52# install commands for the unstripped file 53quiet_cmd_vdso_install = INSTALL $@ 54 cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ 55 56vdso32.so: $(obj)/vdso32.so.dbg 57 @mkdir -p $(MODLIB)/vdso 58 $(call cmd,vdso_install) 59 60vdso_install: vdso32.so 61