forked from Minki/linux
bf76f73c5f
This hooks up UBSAN support for PowerPC. So far it's found some interesting cases where we don't properly sanitise input to shifts, including one in our futex handling. Nothing critical, but interesting and worth fixing. [valentinrothberg@gmail.com: arch/powerpc/Kconfig: fix typo in select statement] Signed-off-by: Daniel Axtens <dja@axtens.net> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
60 lines
1.5 KiB
Makefile
60 lines
1.5 KiB
Makefile
|
|
# List of files in the vdso, has to be asm only for now
|
|
|
|
obj-vdso32-$(CONFIG_PPC64) = getcpu.o
|
|
obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o \
|
|
$(obj-vdso32-y)
|
|
|
|
# Build rules
|
|
|
|
ifeq ($(CONFIG_PPC32),y)
|
|
CROSS32CC := $(CC)
|
|
endif
|
|
|
|
targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
|
|
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
|
|
|
|
GCOV_PROFILE := n
|
|
UBSAN_SANITIZE := n
|
|
|
|
ccflags-y := -shared -fno-common -fno-builtin
|
|
ccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
|
|
$(call cc-ldoption, -Wl$(comma)--hash-style=both)
|
|
asflags-y := -D__VDSO32__ -s
|
|
|
|
obj-y += vdso32_wrapper.o
|
|
extra-y += vdso32.lds
|
|
CPPFLAGS_vdso32.lds += -P -C -Upowerpc
|
|
|
|
# Force dependency (incbin is bad)
|
|
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
|
|
|
|
# link rule for the .so file, .lds has to be first
|
|
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32)
|
|
$(call if_changed,vdso32ld)
|
|
|
|
# strip rule for the .so file
|
|
$(obj)/%.so: OBJCOPYFLAGS := -S
|
|
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
# assembly rules for the .S files
|
|
$(obj-vdso32): %.o: %.S
|
|
$(call if_changed_dep,vdso32as)
|
|
|
|
# actual build commands
|
|
quiet_cmd_vdso32ld = VDSO32L $@
|
|
cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $^ -o $@
|
|
quiet_cmd_vdso32as = VDSO32A $@
|
|
cmd_vdso32as = $(CROSS32CC) $(a_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
|