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be55d07d | 1 | // Low-level functions for atomic operations: CRIS version -*- C++ -*- |
a78a69ba | 2 | |
a5544970 | 3 | // Copyright (C) 2001-2019 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 |