[PATCH] tile: exit with status zero on makecontext return with NULL uc_link

[PATCH] tile: exit with status zero on makecontext return with NULL uc_link

[Chris Metcalf]

---
Tile was correctly calling exit() on a NULL uc_link, but not actually
setting the exit code to any particular value.  We want exit(0), so
change the assembly to make it happen that way.

 ports/ChangeLog.tile                            |    3 +++
 ports/sysdeps/unix/sysv/linux/tile/setcontext.S |    5 ++++-
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/ports/ChangeLog.tile b/ports/ChangeLog.tile
index bd5e067..2335171 100644
--- a/ports/ChangeLog.tile
+++ b/ports/ChangeLog.tile
@@ -1,5 +1,8 @@
 2012-07-17  Chris Metcalf  <cmetcalf@tilera.com>
 
+	* sysdeps/unix/sysv/linux/tile/setcontext.S: Ensure exit status is
+	zero if uc_link is NULL.
+
 	* sysdeps/tile/libm-test-ulps: Account for new tests.
 
 	* data/c++-types-tilepro-linux-gnu.data: Move to ...
diff --git a/ports/sysdeps/unix/sysv/linux/tile/setcontext.S b/ports/sysdeps/unix/sysv/linux/tile/setcontext.S
index f95ad7c..587097e 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/setcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/tile/setcontext.S
@@ -196,6 +196,9 @@ ENTRY (__startcontext)
 	 move r0, r30
 	 jal __setcontext
 	}
-1:	j HIDDEN_JUMPTARGET(exit)
+1:	{
+	 movei r0, 0
+	 j HIDDEN_JUMPTARGET(exit)
+	}
 END (__startcontext)
 .hidden __startcontext
-- 
1.7.1