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tile: fix bug in CFI definitions for clone.S 

We were missing a critical cfi_def_cfa_offset call in .Lthread_start
which caused backtracing to get badly confused for threads.
This commit is contained in:
Chris Metcalf 2012-05-11 18:08:03 -04:00
parent 8daa704ea4
commit 024bb7b4a2
2 changed files with 6 additions and 1 deletions
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4
ChangeLog.tile
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@ -1,3 +1,7 @@
2012-05-12 Chris Metcalf <cmetcalf@tilera.com>
* sysdeps/unix/sysv/linux/tile/nptl/clone.S: Add missing CFI.
2012-05-12 Chris Metcalf <cmetcalf@tilera.com> 2012-05-12 Chris Metcalf <cmetcalf@tilera.com>
* sysdeps/tile/tls-macros.h: Fix buggy TLS_GD, etc., macros. * sysdeps/tile/tls-macros.h: Fix buggy TLS_GD, etc., macros.

3
sysdeps/unix/sysv/linux/tile/nptl/clone.S
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@ -1,4 +1,4 @@
/* Copyright (C) 2011 Free Software Foundation, Inc. /* Copyright (C) 2011-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
@ -167,6 +167,7 @@ ENTRY (__clone)
in getpid(). Otherwise (if CLONE_VM isn't set), it's a in getpid(). Otherwise (if CLONE_VM isn't set), it's a
fork-like clone, and we go ahead and write the cached values fork-like clone, and we go ahead and write the cached values
from the true system pid (retrieved via __NR_getpid syscall). */ from the true system pid (retrieved via __NR_getpid syscall). */
cfi_def_cfa_offset (FRAME_SIZE)
#ifdef __tilegx__ #ifdef __tilegx__
{ {
moveli r0, hw1_last(CLONE_VM) moveli r0, hw1_last(CLONE_VM)