projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 8512287a NL |
1 | hostprogs-y := vdsomunge |
| 2 | ||
| 3 | obj-vdso := vgettimeofday.o datapage.o | |
| 4 | ||
| 5 | # Build rules | |
| 6 | targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds | |
| 7 | obj-vdso := $(addprefix $(obj)/, $(obj-vdso)) | |
| 8 | ||
| d33ce23b NL |
9 | ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector |
| 10 | ccflags-y += -DDISABLE_BRANCH_PROFILING | |
| 11 | ||
| 12 | VDSO_LDFLAGS := -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1 | |
| 13 | VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 | |
| 14 | VDSO_LDFLAGS += -nostdlib -shared | |
| 15 | VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) | |
| 16 | VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id) | |
| 3473f265 | 17 | VDSO_LDFLAGS += $(call cc-ldoption, -fuse-ld=bfd) |
| 8512287a | 18 | |
| f80f6531 NL |
19 | obj-$(CONFIG_VDSO) += vdso.o |
| 20 | extra-$(CONFIG_VDSO) += vdso.lds | |
| 8512287a NL |
21 | CPPFLAGS_vdso.lds += -P -C -U$(ARCH) |
| 22 | ||
| 23 | CFLAGS_REMOVE_vdso.o = -pg | |
| 24 | ||
| 25 | # Force -O2 to avoid libgcc dependencies | |
| 26 | CFLAGS_REMOVE_vgettimeofday.o = -pg -Os | |
| 27 | CFLAGS_vgettimeofday.o = -O2 | |
| 28 | ||
| 29 | # Disable gcov profiling for VDSO code | |
| 30 | GCOV_PROFILE := n | |
| 31 | ||
| 32 | # Force dependency | |
| 33 | $(obj)/vdso.o : $(obj)/vdso.so | |
| 34 | ||
| 35 | # Link rule for the .so file | |
| 36 | $(obj)/vdso.so.raw: $(src)/vdso.lds $(obj-vdso) FORCE | |
| 37 | $(call if_changed,vdsold) | |
| 38 | ||
| 39 | $(obj)/vdso.so.dbg: $(obj)/vdso.so.raw $(obj)/vdsomunge FORCE | |
| 40 | $(call if_changed,vdsomunge) | |
| 41 | ||
| 42 | # Strip rule for the .so file | |
| 43 | $(obj)/%.so: OBJCOPYFLAGS := -S | |
| 44 | $(obj)/%.so: $(obj)/%.so.dbg FORCE | |
| 45 | $(call if_changed,objcopy) | |
| 46 | ||
| 47 | # Actual build commands | |
| 48 | quiet_cmd_vdsold = VDSO $@ | |
| d33ce23b NL |
49 | cmd_vdsold = $(CC) $(c_flags) $(VDSO_LDFLAGS) \ |
| 50 | -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@ | |
| 8512287a NL |
51 | |
| 52 | quiet_cmd_vdsomunge = MUNGE $@ | |
| 53 | cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@ | |
| 54 | ||
| 55 | # | |
| 56 | # Install the unstripped copy of vdso.so.dbg. If our toolchain | |
| 57 | # supports build-id, install .build-id links as well. | |
| 58 | # | |
| 59 | # Cribbed from arch/x86/vdso/Makefile. | |
| 60 | # | |
| 61 | quiet_cmd_vdso_install = INSTALL $< | |
| 62 | define cmd_vdso_install | |
| 63 | cp $< "$(MODLIB)/vdso/vdso.so"; \ | |
| 64 | if readelf -n $< | grep -q 'Build ID'; then \ | |
| 65 | buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \ | |
| 66 | first=`echo $$buildid | cut -b-2`; \ | |
| 67 | last=`echo $$buildid | cut -b3-`; \ | |
| 68 | mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \ | |
| 69 | ln -sf "../../vdso.so" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \ | |
| 70 | fi | |
| 71 | endef | |
| 72 | ||
| 73 | $(MODLIB)/vdso: FORCE | |
| 74 | @mkdir -p $(MODLIB)/vdso | |
| 75 | ||
| 76 | PHONY += vdso_install | |
| 77 | vdso_install: $(obj)/vdso.so.dbg $(MODLIB)/vdso FORCE | |
| 78 | $(call cmd,vdso_install) |