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1 | // Specific definitions for VxWorks -*- C++ -*- | |
2 | ||
3 | // Copyright (C) 2000-2020 Free Software Foundation, Inc. | |
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 | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
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 | ||
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/>. | |
24 | ||
25 | /** @file bits/os_defines.h | |
26 | * This is an internal header file, included by other library headers. | |
27 | * Do not attempt to use it directly. @headername{iosfwd} | |
28 | */ | |
29 | ||
30 | #ifndef _GLIBCXX_OS_DEFINES | |
31 | #define _GLIBCXX_OS_DEFINES 1 | |
32 | ||
33 | // System-specific #define, typedefs, corrections, etc, go here. This | |
34 | // file will come before all others. | |
35 | ||
36 | // The system environment we can rely on varies across VxWorks | |
37 | // versions. | |
38 | #include <_vxworks-versions.h> | |
39 | ||
40 | // Weak refs are supported starting with VxWorks 7, in RTP mode only | |
41 | ||
42 | #if _VXWORKS_MAJOR_GE(7) && defined(__RTP__) | |
43 | #define _GLIBCXX_USE_WEAK_REF 1 | |
44 | #else | |
45 | #define _GLIBCXX_USE_WEAK_REF 0 | |
46 | #endif | |
47 | ||
48 | // We support TLS on VxWorks (either directly or with emutls) | |
49 | #define _GLIBCXX_HAVE_TLS 1 | |
50 | ||
51 | // VxWorks7 comes with a DinkumWare library and the system headers which we | |
52 | // are going to include for libstdc++ have a few related intrinsic | |
53 | // assumptions. We control our own configuration here to best integrate with | |
54 | // this environment: use C99 math headers, do not use the FP macros for | |
55 | // dynamic cast by default (overriden for RTPs below) and arrange to disable | |
56 | // the system TR1 declarations as we'll provide ours. | |
57 | ||
58 | #if _VXWORKS_MAJOR_GE(7) | |
59 | ||
60 | #define _GLIBCXX_USE_C99_MATH 1 | |
61 | #define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC 0 | |
62 | ||
63 | #undef _HAS_TR1_DECLARATIONS | |
64 | #define _HAS_TR1_DECLARATIONS 0 | |
65 | ||
66 | #else // VXWORKS_MAJOR < 7 | |
67 | ||
68 | // For RTPs, use the VxWorks headers as a basis, from which we can use | |
69 | // C99 dynamic FP macros and expect (after fixincludes) accurate c++11 | |
70 | // prototypes for FP. | |
71 | ||
72 | #ifdef __RTP__ | |
73 | ||
74 | #define _GLIBCXX_INCLUDE_NEXT_C_HEADERS 1 | |
75 | ||
76 | #undef _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC | |
77 | #define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC 1 | |
78 | ||
79 | #define __CORRECT_ISO_CPP11_MATH_H_PROTO_FP | |
80 | ||
81 | #else // !__RTP__ | |
82 | ||
83 | // libstdc++ will include system headers and vxWorks.h ought to have | |
84 | // been included ahead for VxWorks kernel modules prior to VxWorks 7 | |
85 | #include <vxWorks.h> | |
86 | ||
87 | #endif // __RTP__ | |
88 | ||
89 | #endif // _VXWORKS_MAJOR >= 7 | |
90 | ||
91 | // The min/max "functions" may be refered to with a namespace prefix. | |
92 | // Prevent possible redefinitions as macros from VxWorks headers. | |
93 | #undef NOMINMAX | |
94 | #define NOMINMAX 1 | |
95 | ||
96 | // Do not include the inline definitions from VxWorks headers, as we'll | |
97 | // want to use the ones from libstdc++ instead. | |
98 | #undef _NO_CPP_INLINES | |
99 | #define _NO_CPP_INLINES 1 | |
100 | ||
101 | #endif // _GLIBCXX_OS_DEFINES |