From: Roland McGrath <[email protected]>
This keeps an unstripped copy of the 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.
Signed-off-by: Roland McGrath <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
arch/x86_64/Makefile | 7 ++++++-
arch/x86_64/ia32/Makefile | 25 +++++++++++++++++++++----
2 files changed, 27 insertions(+), 5 deletions(-)
Index: linux/arch/x86_64/Makefile
===================================================================
--- linux.orig/arch/x86_64/Makefile
+++ linux/arch/x86_64/Makefile
@@ -113,9 +113,14 @@ bzdisk: vmlinux
fdimage fdimage144 fdimage288 isoimage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
-install:
+install: vdso_install
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
+vdso_install:
+ifeq ($(CONFIG_IA32_EMULATION),y)
+ $(Q)$(MAKE) $(build)=arch/x86_64/ia32 $@
+endif
+
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
Index: linux/arch/x86_64/ia32/Makefile
===================================================================
--- linux.orig/arch/x86_64/ia32/Makefile
+++ linux/arch/x86_64/ia32/Makefile
@@ -18,18 +18,35 @@ $(obj)/syscall32_syscall.o: \
$(foreach F,sysenter syscall,$(obj)/vsyscall-$F.so)
# Teach kbuild about targets
-targets := $(foreach F,sysenter syscall,vsyscall-$F.o vsyscall-$F.so)
+targets := $(foreach F,$(addprefix vsyscall-,sysenter syscall),\
+ $F.o $F.so $F.so.dbg)
# The DSO images are built using a special linker script
quiet_cmd_syscall = SYSCALL $@
- cmd_syscall = $(CC) -m32 -nostdlib -shared -s \
+ cmd_syscall = $(CC) -m32 -nostdlib -shared \
$(call ld-option, -Wl$(comma)--hash-style=sysv) \
-Wl,-soname=linux-gate.so.1 -o $@ \
-Wl,-T,$(filter-out FORCE,$^)
-$(obj)/vsyscall-sysenter.so $(obj)/vsyscall-syscall.so: \
-$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
+$(obj)/%.so: OBJCOPYFLAGS := -S
+$(obj)/%.so: $(obj)/%.so.dbg FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/vsyscall-sysenter.so.dbg $(obj)/vsyscall-syscall.so.dbg: \
+$(obj)/vsyscall-%.so.dbg: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
$(call if_changed,syscall)
AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32
AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32
+
+vdsos := vdso32-sysenter.so vdso32-syscall.so
+
+quiet_cmd_vdso_install = INSTALL $@
+ cmd_vdso_install = cp $(@:vdso32-%.so=$(obj)/vsyscall-%.so.dbg) \
+ $(MODLIB)/vdso/$@
+
+$(vdsos):
+ @mkdir -p $(MODLIB)/vdso
+ $(call cmd,vdso_install)
+
+vdso_install: $(vdsos)
-
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