Merge from transactional-memory branch.
From-SVN: r181154
diff --git a/libitm/barrier.cc b/libitm/barrier.cc
new file mode 100644
index 0000000..a536d0f
--- /dev/null
+++ b/libitm/barrier.cc
@@ -0,0 +1,44 @@
+/* Copyright (C) 2008, 2009, 2011 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <rth@redhat.com>.
+
+ This file is part of the GNU Transactional Memory Library (libitm).
+
+ Libitm is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "libitm_i.h"
+
+using namespace GTM;
+
+bool abi_dispatch::memmove_overlap_check(void *dst, const void *src,
+ size_t size, ls_modifier dst_mod, ls_modifier src_mod)
+{
+ if (dst_mod == NONTXNAL || src_mod == NONTXNAL)
+ {
+ if (((uintptr_t)dst <= (uintptr_t)src ?
+ (uintptr_t)dst + size > (uintptr_t)src :
+ (uintptr_t)src + size > (uintptr_t)dst))
+ GTM::GTM_fatal("_ITM_memmove overlapping and t/nt is not allowed");
+ return false;
+ }
+ return true;
+}
+
+CREATE_DISPATCH_FUNCTIONS(GTM::abi_disp()->, )
+