| // Low-level functions for atomic operations: sh version -*- C++ -*- |
| |
| // Copyright (C) 1999-2021 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/>. |
| |
| // Use the default atomicity stuff, which will use __atomic* builtins |
| // if threads are available, or the *_single functions on single-thread |
| // configurations. |
| // Actually we wouldn't need this header at all, but because of PR 53579 |
| // libstdc++'s configury will not pickup the -matomic-model= option when |
| // set in the environment. This makes it impossible to enable the proper |
| // atomic model on SH without modifying GCC itself, because libstdc++ always |
| // thinks the target doesn't do any atomics and uses the default mutex based |
| // implementation from cpu/generic/atomicity_mutex. |
| |
| #include <ext/atomicity.h> |
