// Low-level functions for atomic operations: CRIS version -*- C++ -*-// Copyright (C) 2001, 2003, 2004, 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,// 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.#include <ext/atomicity.h>_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)_Atomic_word__exchange_and_add(volatile _Atomic_word* __mem, int __val){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 ofcurrent 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 ofcurrent uses of this function. */"memory");#endifreturn __result;}void__atomic_add(volatile _Atomic_word* __mem, int __val){ __exchange_and_add(__mem, __val); }_GLIBCXX_END_NAMESPACE