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[PATCH] RTEMS: Adjust SPARC multilibs


A recent fix for the LEON3 support added a new option -muser-mode to
select the ASI of the CASA instruction used for atomic operations.  Use
the user-mode CASA instruction since this works also in supervisor-mode.

This patch should be applied to GCC 4.8, 4,9 and mainline.  I do not
have write access, so in case this gets approved, please commit it for
me.

gcc/ChangeLog
2014-05-02  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	* config/sparc/t-rtems: Use user-mode for leon3 multilibs.
---
 gcc/config/sparc/t-rtems |   18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/gcc/config/sparc/t-rtems b/gcc/config/sparc/t-rtems
index f1a3d84..91de612 100644
--- a/gcc/config/sparc/t-rtems
+++ b/gcc/config/sparc/t-rtems
@@ -17,6 +17,20 @@
 # <http://www.gnu.org/licenses/>.
 #
 
-MULTILIB_OPTIONS = msoft-float mcpu=v8/mcpu=leon3
-MULTILIB_DIRNAMES = soft v8 leon3
+MULTILIB_OPTIONS = msoft-float mcpu=v8/mcpu=leon3 muser-mode
+MULTILIB_DIRNAMES = soft v8 leon3 user-mode
 MULTILIB_MATCHES = msoft-float=mno-fpu
+
+# Enumeration of multilibs
+
+MULTILIB_EXCEPTIONS += msoft-float/mcpu=v8/muser-mode
+# MULTILIB_EXCEPTIONS += msoft-float/mcpu=v8
+# MULTILIB_EXCEPTIONS += msoft-float/mcpu=leon3/muser-mode
+MULTILIB_EXCEPTIONS += msoft-float/mcpu=leon3
+MULTILIB_EXCEPTIONS += msoft-float/muser-mode
+# MULTILIB_EXCEPTIONS += msoft-float
+MULTILIB_EXCEPTIONS += mcpu=v8/muser-mode
+# MULTILIB_EXCEPTIONS += mcpu=v8
+# MULTILIB_EXCEPTIONS += mcpu=leon3/muser-mode
+MULTILIB_EXCEPTIONS += mcpu=leon3
+MULTILIB_EXCEPTIONS += muser-mode
-- 
1.7.7


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