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diff --git a/libitm/config/alpha/unaligned.h b/libitm/config/alpha/unaligned.h
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+++ b/libitm/config/alpha/unaligned.h
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+/* Copyright (C) 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/>.  */
+
+#ifndef LIBITM_ALPHA_UNALIGNED_H
+#define LIBITM_ALPHA_UNALIGNED_H 1
+
+#define HAVE_ARCH_UNALIGNED_LOAD2_U2 1
+#define HAVE_ARCH_UNALIGNED_LOAD2_U4 1
+#define HAVE_ARCH_UNALIGNED_LOAD2_U8 1
+
+#ifndef __alpha_bwx__
+#define HAVE_ARCH_UNALIGNED_STORE2_U2 1
+#endif
+#define HAVE_ARCH_UNALIGNED_STORE2_U4 1
+#define HAVE_ARCH_UNALIGNED_STORE2_U8 1
+
+#include "config/generic/unaligned.h"
+
+namespace GTM HIDDEN {
+
+template<>
+inline uint16_t ALWAYS_INLINE
+unaligned_load2<uint16_t>(const gtm_cacheline *c1,
+			  const gtm_cacheline *c2, size_t ofs)
+{
+  uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
+  uint64_t v2 = c2->u64[0];
+
+  return __builtin_alpha_extwl (v1, ofs) | __builtin_alpha_extwh (v2, ofs);
+}
+
+template<>
+inline uint32_t ALWAYS_INLINE
+unaligned_load2<uint32_t>(const gtm_cacheline *c1,
+			  const gtm_cacheline *c2, size_t ofs)
+{
+  uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
+  uint64_t v2 = c2->u64[0];
+
+  return __builtin_alpha_extll (v1, ofs) + __builtin_alpha_extlh (v2, ofs);
+}
+
+template<>
+inline uint64_t ALWAYS_INLINE
+unaligned_load2<uint64_t>(const gtm_cacheline *c1,
+			  const gtm_cacheline *c2, size_t ofs)
+{
+  uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
+  uint64_t v2 = c2->u64[0];
+
+  return __builtin_alpha_extql (v1, ofs) | __builtin_alpha_extqh (v2, ofs);
+}
+
+#ifndef __alpha_bwx__
+template<>
+inline void
+unaligned_store2<uint16_t>(gtm_cacheline *c1, gtm_cacheline *c2,
+			   size_t ofs, uint16_t val)
+{
+  uint32_t vl = (uint32_t)val << 24, vh = val >> 8;
+
+  gtm_cacheline::store_mask (&c1->u32[CACHELINE_SIZE / 4 - 1], vl, 4);
+  gtm_cacheline::store_mask (&c2->u32[0], vh, 1);
+}
+#endif
+
+template<>
+inline void
+unaligned_store2<uint32_t>(gtm_cacheline *c1, gtm_cacheline *c2,
+			   size_t ofs, uint32_t val)
+{
+  uint64_t vl = __builtin_alpha_insll (val, ofs);
+  uint64_t ml = __builtin_alpha_insll (~0u, ofs);
+  uint64_t vh = __builtin_alpha_inslh (val, ofs);
+  uint64_t mh = __builtin_alpha_inslh (~0u, ofs);
+
+  gtm_cacheline::store_mask (&c1->u64[CACHELINE_SIZE / 8 - 1], vl, ml);
+  gtm_cacheline::store_mask (&c2->u64[0], vh, mh);
+}
+
+template<>
+inline void
+unaligned_store2<uint64_t>(gtm_cacheline *c1, gtm_cacheline *c2,
+			   size_t ofs, uint64_t val)
+{
+  uint64_t vl = __builtin_alpha_insql (val, ofs);
+  uint64_t ml = __builtin_alpha_insql (~0u, ofs);
+  uint64_t vh = __builtin_alpha_insqh (val, ofs);
+  uint64_t mh = __builtin_alpha_insqh (~0u, ofs);
+
+  gtm_cacheline::store_mask (&c1->u64[CACHELINE_SIZE / 8 - 1], vl, ml);
+  gtm_cacheline::store_mask (&c2->u64[0], vh, mh);
+}
+
+} // namespace GTM
+
+#endif // LIBITM_ALPHA_UNALIGNED_H