diff options
Diffstat (limited to 'libstdc++-v3/config/cpu/cris')
| -rw-r--r-- | libstdc++-v3/config/cpu/cris/atomic_word.h | 31 | ||||
| -rw-r--r-- | libstdc++-v3/config/cpu/cris/atomicity.h | 89 |
2 files changed, 120 insertions, 0 deletions
diff --git a/libstdc++-v3/config/cpu/cris/atomic_word.h b/libstdc++-v3/config/cpu/cris/atomic_word.h new file mode 100644 index 000000000..369b7b0c5 --- /dev/null +++ b/libstdc++-v3/config/cpu/cris/atomic_word.h @@ -0,0 +1,31 @@ +// 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 + +// This entity must not cross a page boundary. +typedef int _Atomic_word __attribute__ ((__aligned__ (4))); + +#endif diff --git a/libstdc++-v3/config/cpu/cris/atomicity.h b/libstdc++-v3/config/cpu/cris/atomicity.h new file mode 100644 index 000000000..148a8b61c --- /dev/null +++ b/libstdc++-v3/config/cpu/cris/atomicity.h @@ -0,0 +1,89 @@ +// Low-level functions for atomic operations: CRIS version -*- C++ -*- + +// Copyright (C) 2001, 2003, 2004, 2005, 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/>. + +#include <ext/atomicity.h> + +namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + + _Atomic_word + __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw () + { + int __tmp; + _Atomic_word __result; + +#if (__CRIS_arch_version >= 32) + __asm__ __volatile__ (" clearf p \n" + "0: \n" + " move.d %4,%2 \n" + " move.d [%3],%0 \n" + " add.d %0,%2 \n" + " ax \n" + " move.d %2,[%3] \n" + " bcs 0b \n" + " clearf p \n" + : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) + : "r" (__mem), "g" (__val), "Q" (*__mem) + : "memory"); +#elif (__CRIS_arch_version >= 10) + __asm__ __volatile__ (" clearf \n" + "0: \n" + " move.d %4,%2 \n" + " move.d [%3],%0 \n" + " add.d %0,%2 \n" + " ax \n" + " move.d %2,[%3] \n" + " bwf 0b \n" + " clearf \n" + : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) + : "r" (__mem), "g" (__val), "Q" (*__mem) + /* The memory clobber must stay, regardless of + current uses of this function. */ + : "memory"); +#else + __asm__ __volatile__ (" move $ccr,$r9 \n" + " di \n" + " move.d %4,%2 \n" + " move.d [%3],%0 \n" + " add.d %0,%2 \n" + " move.d %2,[%3] \n" + " move $r9,$ccr \n" + : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) + : "r" (__mem), "g" (__val), "Q" (*__mem) + : "r9", + /* The memory clobber must stay, regardless of + current uses of this function. */ + "memory"); +#endif + + return __result; + } + + void + __atomic_add(volatile _Atomic_word* __mem, int __val) throw () + { __exchange_and_add(__mem, __val); } + +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace |