From: Chris Metcalf <cmetcalf@tilera.com>
Date: Mon, 14 May 2012 19:03:46 +0000 (-0400)
Subject: tile: align stack for tilegx32
X-Git-Tag: glibc-2.16-ports-before-merge~126
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bcfe09d24161bdf3b734da2f2fc4692bd26b7f52;p=thirdparty%2Fglibc.git

tile: align stack for tilegx32

Previously we weren't re-aligning the stack pointer during the
call to _dl_init(), so for tilegx32 and an odd value in _dl_skip_args
and kernel unaligned access fixups disabled, we would die with SIGBUS.
We now handle this case properly by aligning before calling _dl_init().
---

diff --git a/ChangeLog.tile b/ChangeLog.tile
index 6bde1689a73..9e75826e939 100644
--- a/ChangeLog.tile
+++ b/ChangeLog.tile
@@ -1,3 +1,7 @@
+2012-05-14  Chris Metcalf  <cmetcalf@tilera.com>
+
+	* sysdeps/tile/dl-start.S: Align stack for tilegx32.
+
 2012-05-12  Chris Metcalf  <cmetcalf@tilera.com>
 
 	* sysdeps/unix/sysv/linux/tile/sys/dataplane.h: Add <features.h>.
diff --git a/sysdeps/tile/dl-start.S b/sysdeps/tile/dl-start.S
index 94025a544b9..97cdac3fce9 100644
--- a/sysdeps/tile/dl-start.S
+++ b/sysdeps/tile/dl-start.S
@@ -77,6 +77,7 @@ ENTRY (_start)
 	 ST_PTR r52, r0
 	 SHL_PTR_ADD sp, r4, sp
 	}
+	andi sp, sp, -8
 
 .Lno_skip:
 	/* Call_dl_init (_dl_loaded, argc, argv, envp).  See elf/start.s