// Low-level functions for atomic operations: CRIS version -*- C++ -*- // Copyright (C) 2001-2014 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 // . #include 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