blob: e5dfcff92e0711d84d8f62de15ddcfcc125b3456 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Low-level type for atomic operations -*- C++ -*-
// Copyright (C) 2004-2018 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/>.
#ifndef _GLIBCXX_ATOMIC_WORD_H
#define _GLIBCXX_ATOMIC_WORD_H 1
#ifdef __arch64__
typedef long _Atomic_word;
#else
typedef int _Atomic_word;
#endif
#if defined(__sparc_v9__)
// These are necessary under the V9 RMO model, though it is almost never
// used in userspace.
#define _GLIBCXX_READ_MEM_BARRIER \
__asm __volatile ("membar #LoadLoad":::"memory")
#define _GLIBCXX_WRITE_MEM_BARRIER \
__asm __volatile ("membar #StoreStore":::"memory")
#elif defined(__sparc_v8__)
// This is necessary under the PSO model.
#define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile ("stbar":::"memory")
#endif
#endif
|
