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[PATCH 13/14] tile: align stack for tilegx32
- From: Chris Metcalf <cmetcalf at tilera dot com>
- To: <libc-ports at sourceware dot org>
- Date: Mon, 14 May 2012 15:03:46 -0400
- Subject: [PATCH 13/14] tile: align stack for tilegx32
- References: <4FB161CE.6070905@tilera.com>
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().
---
ChangeLog.tile | 4 ++++
sysdeps/tile/dl-start.S | 1 +
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/ChangeLog.tile b/ChangeLog.tile
index 6bde168..9e75826 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 94025a5..97cdac3 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
--
1.6.5.2