[Xen-changelog] [xen master] x86/mm: override stored file names for multiply built sources

[patchbot@xxxxxxx]

commit 1a771b7a0d5cbcd386744bd4bdd8e66dcfc096c8
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Oct 27 11:44:52 2015 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Oct 27 11:44:52 2015 +0100

    x86/mm: override stored file names for multiply built sources
    
    To make it possible to tell apart the static symbols therein, use their
    object file names instead of their source ones.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>
---
 xen/Rules.mk                     |    4 ++--
 xen/arch/x86/mm/guest_walk.c     |    3 +++
 xen/arch/x86/mm/hap/guest_walk.c |    2 ++
 xen/arch/x86/mm/shadow/multi.c   |    4 +++-
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/xen/Rules.mk b/xen/Rules.mk
index bf19d20..433dad3 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -42,10 +42,10 @@ ALL_OBJS-y               += $(BASEDIR)/xsm/built_in.o
 ALL_OBJS-y               += $(BASEDIR)/arch/$(TARGET_ARCH)/built_in.o
 ALL_OBJS-$(x86)          += $(BASEDIR)/crypto/built_in.o
 
-CFLAGS += -fno-builtin -fno-common
+CFLAGS += -nostdinc -fno-builtin -fno-common
 CFLAGS += -Werror -Wredundant-decls -Wno-pointer-arith
 CFLAGS += -pipe -g -D__XEN__ -include $(BASEDIR)/include/xen/config.h
-CFLAGS += -nostdinc
+CFLAGS += '-D__OBJECT_FILE__="$@"'
 
 CFLAGS-$(XSM_ENABLE)    += -DXSM_ENABLE
 CFLAGS-$(FLASK_ENABLE)  += -DFLASK_ENABLE
diff --git a/xen/arch/x86/mm/guest_walk.c b/xen/arch/x86/mm/guest_walk.c
index 773454d..ac28122 100644
--- a/xen/arch/x86/mm/guest_walk.c
+++ b/xen/arch/x86/mm/guest_walk.c
@@ -21,6 +21,9 @@
  * along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
+/* Allow uniquely identifying static symbols in the 3 generated objects. */
+asm(".file \"" __OBJECT_FILE__ "\"");
+
 #include <xen/types.h>
 #include <xen/mm.h>
 #include <xen/paging.h>
diff --git a/xen/arch/x86/mm/hap/guest_walk.c b/xen/arch/x86/mm/hap/guest_walk.c
index 66f0010..11c1b35 100644
--- a/xen/arch/x86/mm/hap/guest_walk.c
+++ b/xen/arch/x86/mm/hap/guest_walk.c
@@ -18,6 +18,8 @@
  * this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
+/* Allow uniquely identifying static symbols in the 3 generated objects. */
+asm(".file \"" __OBJECT_FILE__ "\"");
 
 #include <xen/domain_page.h>
 #include <xen/paging.h>
diff --git a/xen/arch/x86/mm/shadow/multi.c b/xen/arch/x86/mm/shadow/multi.c
index b54835d..58f7e72 100644
--- a/xen/arch/x86/mm/shadow/multi.c
+++ b/xen/arch/x86/mm/shadow/multi.c
@@ -20,7 +20,9 @@
  * along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <xen/config.h>
+/* Allow uniquely identifying static symbols in the 3 generated objects. */
+asm(".file \"" __OBJECT_FILE__ "\"");
+
 #include <xen/types.h>
 #include <xen/mm.h>
 #include <xen/trace.h>
--
generated by git-patchbot for /home/xen/git/xen.git#master

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