1 files changed, 48 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/config/cpu/sparc/atomic_word.h b/gcc-4.4.3/libstdc++-v3/config/cpu/sparc/atomic_word.h
new file mode 100644
index 000000000..41e7bd4df
--- /dev/null
+++ b/gcc-4.4.3/libstdc++-v3/config/cpu/sparc/atomic_word.h
@@ -0,0 +1,48 @@
+// Low-level type for atomic operations -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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 3, 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.
+
+// 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 _GLIBCXX_ATOMIC_WORD_H
+#define _GLIBCXX_ATOMIC_WORD_H	1
+
+#ifdef __arch64__
+  typedef long _Atomic_word;
+#else
+  typedef int _Atomic_word;
+#endif
+
+#if defined(__sparc_v9__)
+// These are necessary under the V9 RMO model, though it is almost never
+// used in userspace.
+#define _GLIBCXX_READ_MEM_BARRIER \
+  __asm __volatile ("membar #LoadLoad":::"memory")
+#define _GLIBCXX_WRITE_MEM_BARRIER \
+  __asm __volatile ("membar #StoreStore":::"memory")
+
+#elif defined(__sparc_v8__)
+// This is necessary under the PSO model.
+#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("stbar":::"memory")
+
+#endif
+
+#endif