1 files changed, 59 insertions, 0 deletions
diff --git a/contrib/libstdc++/config/os/aix/bits/atomicity.h b/contrib/libstdc++/config/os/aix/bits/atomicity.h
new file mode 100644
index 0000000..ecac7da
--- /dev/null
+++ b/contrib/libstdc++/config/os/aix/bits/atomicity.h
@@ -0,0 +1,59 @@
+// Low-level functions for atomic operations: AIX version  -*- C++ -*-
+
+// Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 2, or (at your option)
+// any later version.
+
+// This library 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#ifndef _BITS_ATOMICITY_H
+#define _BITS_ATOMICITY_H       1
+
+/* We cannot use the cpu/powerpc/bits/atomicity.h inline assembly
+   definitions for these operations since they depend on operations
+   that are not available on the original POWER architecture.  AIX
+   still runs on the POWER architecture, so it would be incorrect to
+   assume the existence of these instructions.  */
+
+/* This should match the type pointed to by atomic_p in
+   <sys/atomic_op.h>.  */
+typedef int _Atomic_word;
+
+#include <sys/atomic_op.h>
+
+static inline int
+__attribute__ ((unused))
+__exchange_and_add (atomic_p __mem, int __val)
+{
+  return fetch_and_add (__mem, __val);
+}
+
+static inline void
+__attribute__ ((unused))
+__atomic_add (atomic_p __mem, int __val)
+{
+  (void) fetch_and_add (__mem, __val);
+}
+
+#endif /* atomicity.h */