1df24e178SHelge Deller# List of files in the vdso, has to be asm only for now 2df24e178SHelge Deller 3df24e178SHelge Dellerobj-vdso32 = note.o sigtramp.o restart_syscall.o 4df24e178SHelge Deller 5df24e178SHelge Deller# Build rules 6df24e178SHelge Deller 7df24e178SHelge Dellertargets := $(obj-vdso32) vdso32.so 8df24e178SHelge Dellerobj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) 9df24e178SHelge Deller 10df24e178SHelge Dellerccflags-y := -shared -fno-common -fbuiltin -mno-fast-indirect-calls -O2 -mno-long-calls 11df24e178SHelge Deller# -march=1.1 -mschedule=7100LC 12df24e178SHelge Dellerccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ 13df24e178SHelge Deller $(call ld-option, -Wl$(comma)--hash-style=sysv) 14df24e178SHelge Dellerasflags-y := -D__VDSO32__ -s 15df24e178SHelge Deller 16df24e178SHelge DellerKBUILD_AFLAGS += -DBUILD_VDSO 17df24e178SHelge DellerKBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING 18df24e178SHelge Deller 19df24e178SHelge DellerVDSO_LIBGCC := $(shell $(CROSS32CC) -print-libgcc-file-name) 20df24e178SHelge Deller 21df24e178SHelge Dellerobj-y += vdso32_wrapper.o 22df24e178SHelge Dellerextra-y += vdso32.lds 23df24e178SHelge DellerCPPFLAGS_vdso32.lds += -P -C # -U$(ARCH) 24df24e178SHelge Deller 25df24e178SHelge Deller$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so FORCE 26df24e178SHelge Deller 27df24e178SHelge Deller# Force dependency (incbin is bad) 28df24e178SHelge Deller# link rule for the .so file, .lds has to be first 29*9086e601SHelge Deller$(obj)/vdso32.so: $(src)/vdso32.lds $(obj-vdso32) $(obj-cvdso32) $(VDSO_LIBGCC) FORCE 30df24e178SHelge Deller $(call if_changed,vdso32ld) 31df24e178SHelge Deller 32df24e178SHelge Deller# assembly rules for the .S files 33df24e178SHelge Deller$(obj-vdso32): %.o: %.S FORCE 34df24e178SHelge Deller $(call if_changed_dep,vdso32as) 35df24e178SHelge Deller 36df24e178SHelge Deller$(obj-cvdso32): %.o: %.c FORCE 37df24e178SHelge Deller $(call if_changed_dep,vdso32cc) 38df24e178SHelge Deller 39df24e178SHelge Deller# actual build commands 40df24e178SHelge Dellerquiet_cmd_vdso32ld = VDSO32L $@ 41*9086e601SHelge Deller cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@ 42df24e178SHelge Dellerquiet_cmd_vdso32as = VDSO32A $@ 43df24e178SHelge Deller cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $< 44df24e178SHelge Dellerquiet_cmd_vdso32cc = VDSO32C $@ 45df24e178SHelge Deller cmd_vdso32cc = $(CROSS32CC) $(c_flags) -c -fPIC -mno-fast-indirect-calls -o $@ $< 46df24e178SHelge Deller 47df24e178SHelge Deller# Generate VDSO offsets using helper script 48df24e178SHelge Dellergen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh 49df24e178SHelge Dellerquiet_cmd_vdsosym = VDSOSYM $@ 50df24e178SHelge Deller cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ 51df24e178SHelge Deller 52df24e178SHelge Dellerinclude/generated/vdso32-offsets.h: $(obj)/vdso32.so FORCE 53df24e178SHelge Deller $(call if_changed,vdsosym) 54