projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| b020632e MS |
2 | # List of files in the vdso, has to be asm only for now |
| 3 | ||
| 907fa061 HC |
4 | KCOV_INSTRUMENT := n |
| 5 | ||
| 249c543b | 6 | obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o |
| b020632e MS |
7 | |
| 8 | # Build rules | |
| 9 | ||
| 10 | targets := $(obj-vdso64) vdso64.so vdso64.so.dbg | |
| 11 | obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) | |
| 12 | ||
| 13 | KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) | |
| 14 | KBUILD_AFLAGS_64 += -m64 -s | |
| 15 | ||
| 16 | KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) | |
| 17 | KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin | |
| 18 | KBUILD_CFLAGS_64 += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ | |
| aad1b688 | 19 | $(call cc-ldoption, -Wl$(comma)--hash-style=both) |
| b020632e MS |
20 | |
| 21 | $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64) | |
| 22 | $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64) | |
| 23 | ||
| 24 | obj-y += vdso64_wrapper.o | |
| 25 | extra-y += vdso64.lds | |
| 26 | CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) | |
| 27 | ||
| c42d8c7d | 28 | # Disable gcov profiling and ubsan for VDSO code |
| add7490c | 29 | GCOV_PROFILE := n |
| c42d8c7d | 30 | UBSAN_SANITIZE := n |
| add7490c | 31 | |
| b020632e MS |
32 | # Force dependency (incbin is bad) |
| 33 | $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so | |
| 34 | ||
| 35 | # link rule for the .so file, .lds has to be first | |
| 36 | $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) | |
| 37 | $(call if_changed,vdso64ld) | |
| 38 | ||
| 39 | # strip rule for the .so file | |
| 40 | $(obj)/%.so: OBJCOPYFLAGS := -S | |
| 41 | $(obj)/%.so: $(obj)/%.so.dbg FORCE | |
| 42 | $(call if_changed,objcopy) | |
| 43 | ||
| 44 | # assembly rules for the .S files | |
| 45 | $(obj-vdso64): %.o: %.S | |
| 46 | $(call if_changed_dep,vdso64as) | |
| 47 | ||
| 48 | # actual build commands | |
| 49 | quiet_cmd_vdso64ld = VDSO64L $@ | |
| 50 | cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@ | |
| 51 | quiet_cmd_vdso64as = VDSO64A $@ | |
| 52 | cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $< | |
| 53 | ||
| 54 | # install commands for the unstripped file | |
| 55 | quiet_cmd_vdso_install = INSTALL $@ | |
| 56 | cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ | |
| 57 | ||
| 58 | vdso64.so: $(obj)/vdso64.so.dbg | |
| 59 | @mkdir -p $(MODLIB)/vdso | |
| 60 | $(call cmd,vdso_install) | |
| 61 | ||
| 62 | vdso_install: vdso64.so |