[rtems-libbsd commit] Prevent invalid optimizations for linker sets

[Sebastian Huber]

Module:    rtems-libbsd
Branch:    master
Commit:    4e07ea5063647ef22666804d30817fbd2c64d7e8
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=4e07ea5063647ef22666804d30817fbd2c64d7e8

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Wed Apr 27 14:18:36 2016 +0200

Prevent invalid optimizations for linker sets

---

 freebsd/sys/sys/linker_set.h | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/freebsd/sys/sys/linker_set.h b/freebsd/sys/sys/linker_set.h
index 35baa89..1d64e11 100644
--- a/freebsd/sys/sys/linker_set.h
+++ b/freebsd/sys/sys/linker_set.h
@@ -51,35 +51,35 @@
 	static void const * const __set_##set##_sym_##sym 		\
 	__section("set_" #set) __used = &sym
 #else /* __rtems__ */
-#define RTEMS_BSD_DEFINE_SET(set, type)				\
-	type const __CONCAT(_bsd__start_set_,set)[0]			\
-	__section(".rtemsroset.bsd." __STRING(set) ".begin") __used;		\
-	type const __CONCAT(_bsd__stop_set_,set)[0]			\
+#define RTEMS_BSD_DEFINE_SET(set, type)					\
+	type volatile const __CONCAT(_bsd__start_set_,set)[0]		\
+	__section(".rtemsroset.bsd." __STRING(set) ".begin") __used;	\
+	type volatile const __CONCAT(_bsd__stop_set_,set)[0]		\
 	__section(".rtemsroset.bsd." __STRING(set) ".end") __used
 
 #define RTEMS_BSD_DECLARE_SET(set, type)				\
-	extern type const __CONCAT(_bsd__start_set_,set)[0];		\
-	extern type const __CONCAT(_bsd__stop_set_,set)[0]
+	extern type volatile const __CONCAT(_bsd__start_set_,set)[0];	\
+	extern type volatile const __CONCAT(_bsd__stop_set_,set)[0]
 
 #define RTEMS_BSD_DEFINE_SET_ITEM(set, sym, type)			\
-	static type const __set_##set##_sym_##sym 			\
+	static type volatile const __set_##set##_sym_##sym		\
 	__section(".rtemsroset.bsd." __STRING(set) ".content") __used
 
 #define __MAKE_SET(set, sym)						\
 	RTEMS_BSD_DEFINE_SET_ITEM(set, sym, const void *) = &sym
 
 #define RTEMS_BSD_DEFINE_RWSET(set, type)				\
-	type __CONCAT(_bsd__start_set_,set)[0]			\
-	__section(".rtemsrwset.bsd." __STRING(set) ".begin") __used;		\
+	type __CONCAT(_bsd__start_set_,set)[0]				\
+	__section(".rtemsrwset.bsd." __STRING(set) ".begin") __used;	\
 	type __CONCAT(_bsd__stop_set_,set)[0]				\
 	__section(".rtemsrwset.bsd." __STRING(set) ".end") __used
 
 #define RTEMS_BSD_DECLARE_RWSET(set, type)				\
-	extern type __CONCAT(_bsd__start_set_,set)[0];			\
-	extern type __CONCAT(_bsd__stop_set_,set)[0]
+	extern type volatile __CONCAT(_bsd__start_set_,set)[0];		\
+	extern type volatile __CONCAT(_bsd__stop_set_,set)[0]
 
 #define RTEMS_BSD_DEFINE_RWSET_ITEM(set, sym, type)			\
-	static type __set_##set##_sym_##sym 				\
+	static type volatile __set_##set##_sym_##sym 			\
 	__section(".rtemsrwset.bsd." __STRING(set) ".content") __used
 
 #define __MAKE_RWSET(set, sym)						\