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Message-Id: <20070711185559.B45804D0555@magilla.localdomain>
Date: Wed, 11 Jul 2007 11:55:59 -0700 (PDT)
From: Roland McGrath <roland@...hat.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc vDSO: install unstripped copies on disk
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". These files can be useful when they
contain source-level debugging information.
Signed-off-by: Roland McGrath <roland@...hat.com>
---
arch/powerpc/Makefile | 5 ++++-
arch/powerpc/kernel/vdso32/Makefile | 20 +++++++++++++++++---
arch/powerpc/kernel/vdso64/Makefile | 19 ++++++++++++++++---
3 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index fbafd96..1f768ca 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -168,6 +168,10 @@ endef
install:
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
+ifeq ($(CONFIG_PPC64),y)
+ $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 install
+endif
+ $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 install
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
@@ -209,4 +213,3 @@ checkbin:
fi
CLEAN_FILES += $(TOUT)
-
diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile
index 3726358..e6a6ef1 100644
--- a/arch/powerpc/kernel/vdso32/Makefile
+++ b/arch/powerpc/kernel/vdso32/Makefile
@@ -9,11 +9,11 @@ ifeq ($(CONFIG_PPC32),y)
CROSS32CC := $(CC)
endif
-targets := $(obj-vdso32) vdso32.so
+targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
-EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
+EXTRA_CFLAGS := -shared -fno-common -fno-builtin
EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)
EXTRA_AFLAGS := -D__VDSO32__ -s
@@ -26,9 +26,14 @@ CPPFLAGS_vdso32.lds += -P -C -Upowerpc
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
# link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so: $(src)/vdso32.lds $(obj-vdso32)
+$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32)
$(call if_changed,vdso32ld)
+# strip rule for the .so file
+$(obj)/%.so: OBJCOPYFLAGS := -S
+$(obj)/%.so: $(obj)/%.so.dbg FORCE
+ $(call if_changed,objcopy)
+
# assembly rules for the .S files
$(obj-vdso32): %.o: %.S
$(call if_changed_dep,vdso32as)
@@ -39,3 +44,12 @@ quiet_cmd_vdso32ld = VDSO32L $@
quiet_cmd_vdso32as = VDSO32A $@
cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
+# install commands for the unstripped file
+quiet_cmd_vdso_install = INSTALL $@
+ cmd_vdso_install = cp $@...g $(MODLIB)/vdso/$@
+
+vdso32.so: $(obj)/vdso32.so.dbg
+ @mkdir -p $(MODLIB)/vdso
+ $(call cmd,vdso_install)
+
+install: vdso32.so
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile
index 43af9b2..3d474e9 100644
--- a/arch/powerpc/kernel/vdso64/Makefile
+++ b/arch/powerpc/kernel/vdso64/Makefile
@@ -4,10 +4,10 @@ obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
# Build rules
-targets := $(obj-vdso64) vdso64.so
+targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
-EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin
+EXTRA_CFLAGS := -shared -fno-common -fno-builtin
EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)
EXTRA_AFLAGS := -D__VDSO64__ -s
@@ -20,9 +20,14 @@ CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
# link rule for the .so file, .lds has to be first
-$(obj)/vdso64.so: $(src)/vdso64.lds $(obj-vdso64)
+$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64)
$(call if_changed,vdso64ld)
+# strip rule for the .so file
+$(obj)/%.so: OBJCOPYFLAGS := -S
+$(obj)/%.so: $(obj)/%.so.dbg FORCE
+ $(call if_changed,objcopy)
+
# assembly rules for the .S files
$(obj-vdso64): %.o: %.S
$(call if_changed_dep,vdso64as)
@@ -33,4 +38,12 @@ quiet_cmd_vdso64ld = VDSO64L $@
quiet_cmd_vdso64as = VDSO64A $@
cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
+# install commands for the unstripped file
+quiet_cmd_vdso_install = INSTALL $@
+ cmd_vdso_install = cp $@...g $(MODLIB)/vdso/$@
+
+vdso64.so: $(obj)/vdso64.so.dbg
+ @mkdir -p $(MODLIB)/vdso
+ $(call cmd,vdso_install)
+install: vdso64.so
-
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