projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| be55d07d | 1 | // Low-level functions for atomic operations: CRIS version -*- C++ -*- |
| a78a69ba | 2 | |
| 8d9254fc | 3 | // Copyright (C) 2001-2020 Free Software Foundation, Inc. |
| a78a69ba HPN |
4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 6 | // software; you can redistribute it and/or modify it under the | |
| 7 | // terms of the GNU General Public License as published by the | |
| 748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
| a78a69ba HPN |
9 | // any later version. |
| 10 | ||
| 11 | // This library is distributed in the hope that it will be useful, | |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | // GNU General Public License for more details. | |
| 15 | ||
| 748086b7 JJ |
16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version | |
| 18 | // 3.1, as published by the Free Software Foundation. | |
| 19 | ||
| 20 | // You should have received a copy of the GNU General Public License and | |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; | |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 23 | // <http://www.gnu.org/licenses/>. | |
| a78a69ba | 24 | |
| 2e362c74 | 25 | #include <ext/atomicity.h> |
| a78a69ba | 26 | |
| 12ffa228 BK |
27 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) |
| 28 | { | |
| 29 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
| 3cbc7af0 | 30 | |
| fea41ef9 | 31 | _Atomic_word |
| 09f2a1e4 | 32 | __exchange_and_add(volatile _Atomic_word* __mem, int __val) throw () |
| 2c5d0ae8 BK |
33 | { |
| 34 | int __tmp; | |
| 35 | _Atomic_word __result; | |
| a78a69ba | 36 | |
| 06785812 HPN |
37 | #if (__CRIS_arch_version >= 32) |
| 38 | __asm__ __volatile__ (" clearf p \n" | |
| 39 | "0: \n" | |
| 40 | " move.d %4,%2 \n" | |
| 41 | " move.d [%3],%0 \n" | |
| 42 | " add.d %0,%2 \n" | |
| 43 | " ax \n" | |
| 44 | " move.d %2,[%3] \n" | |
| 45 | " bcs 0b \n" | |
| 46 | " clearf p \n" | |
| 47 | : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) | |
| 48 | : "r" (__mem), "g" (__val), "Q" (*__mem) | |
| 49 | : "memory"); | |
| 50 | #elif (__CRIS_arch_version >= 10) | |
| 2c5d0ae8 | 51 | __asm__ __volatile__ (" clearf \n" |
| a78a69ba HPN |
52 | "0: \n" |
| 53 | " move.d %4,%2 \n" | |
| 54 | " move.d [%3],%0 \n" | |
| 55 | " add.d %0,%2 \n" | |
| 56 | " ax \n" | |
| 57 | " move.d %2,[%3] \n" | |
| 58 | " bwf 0b \n" | |
| 59 | " clearf \n" | |
| b98c9bf2 HPN |
60 | : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) |
| 61 | : "r" (__mem), "g" (__val), "Q" (*__mem) | |
| fea41ef9 HPN |
62 | /* The memory clobber must stay, regardless of |
| 63 | current uses of this function. */ | |
| 64 | : "memory"); | |
| a78a69ba | 65 | #else |
| fea41ef9 | 66 | __asm__ __volatile__ (" move $ccr,$r9 \n" |
| a78a69ba HPN |
67 | " di \n" |
| 68 | " move.d %4,%2 \n" | |
| 69 | " move.d [%3],%0 \n" | |
| 70 | " add.d %0,%2 \n" | |
| 71 | " move.d %2,[%3] \n" | |
| 72 | " move $r9,$ccr \n" | |
| b98c9bf2 HPN |
73 | : "=&r" (__result), "=Q" (*__mem), "=&r" (__tmp) |
| 74 | : "r" (__mem), "g" (__val), "Q" (*__mem) | |
| fea41ef9 HPN |
75 | : "r9", |
| 76 | /* The memory clobber must stay, regardless of | |
| 77 | current uses of this function. */ | |
| 78 | "memory"); | |
| a78a69ba HPN |
79 | #endif |
| 80 | ||
| 2c5d0ae8 BK |
81 | return __result; |
| 82 | } | |
| a78a69ba | 83 | |
| 2c5d0ae8 | 84 | void |
| 09f2a1e4 | 85 | __atomic_add(volatile _Atomic_word* __mem, int __val) throw () |
| 2c5d0ae8 | 86 | { __exchange_and_add(__mem, __val); } |
| 3cbc7af0 | 87 | |
| 12ffa228 BK |
88 | _GLIBCXX_END_NAMESPACE_VERSION |
| 89 | } // namespace |