x86: Install unstripped copy of 64bit vdso to disk
This keeps an unstripped copy of the 64bit vDSO images built before they are stripped and embedded in the kernel. The unstripped copies get installed in $(MODLIB)/vdso/ by "make install" (or you can explicitly use the subtarget "make vdso_install"). These files can be useful when they contain source-level debugging information. [ tglx: arch/x86 adaptation ] Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -13,7 +13,7 @@ vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
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$(obj)/vdso.o: $(obj)/vdso.so
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targets += vdso.so vdso.lds $(vobjs-y) vdso-syms.o
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targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y) vdso-syms.o
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# The DSO images are built using a special linker script.
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quiet_cmd_syscall = SYSCALL $@
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@ -26,12 +26,19 @@ vdso-flags = -fPIC -shared -Wl,-soname=linux-vdso.so.1 \
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$(call ld-option, -Wl$(comma)--hash-style=sysv) \
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-Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
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SYSCFLAGS_vdso.so = $(vdso-flags)
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SYSCFLAGS_vdso.so.dbg = $(vdso-flags)
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$(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so
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$(obj)/vdso.so: $(src)/vdso.lds $(vobjs) FORCE
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$(obj)/vdso.so.dbg: $(src)/vdso.lds $(vobjs) FORCE
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$(call if_changed,syscall)
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$(obj)/%.so: OBJCOPYFLAGS := -S
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$(obj)/%.so: $(obj)/%.so.dbg FORCE
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$(call if_changed,objcopy)
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CFL := $(PROFILING) -mcmodel=small -fPIC -g0 -O2 -fasynchronous-unwind-tables -m64
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$(obj)/vclock_gettime.o: KBUILD_CFLAGS = $(CFL)
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@ -47,3 +54,11 @@ $(obj)/built-in.o: ld_flags += -R $(obj)/vdso-syms.o
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SYSCFLAGS_vdso-syms.o = -r -d
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$(obj)/vdso-syms.o: $(src)/vdso.lds $(vobjs) FORCE
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$(call if_changed,syscall)
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quiet_cmd_vdso_install = INSTALL $@
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cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
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vdso.so:
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@mkdir -p $(MODLIB)/vdso
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$(call cmd,vdso_install)
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vdso_install: vdso.so
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@ -117,6 +117,7 @@ vdso_install:
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ifeq ($(CONFIG_IA32_EMULATION),y)
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$(Q)$(MAKE) $(build)=arch/x86/ia32 $@
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endif
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$(Q)$(MAKE) $(build)=arch/x86/vdso $@
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archclean:
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$(Q)rm -rf $(objtree)/arch/x86_64/boot
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