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comparison gcc/ada/errno.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /****************************************************************************
2 * *
3 * GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS *
4 * *
5 * E R R N O *
6 * *
7 * C Implementation File *
8 * *
9 * Copyright (C) 1992-2012, Free Software Foundation, Inc. *
10 * *
11 * GNAT is free software; you can redistribute it and/or modify it under *
12 * terms of the GNU General Public License as published by the Free Soft- *
13 * ware Foundation; either version 3, or (at your option) any later ver- *
14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
16 * or FITNESS FOR A PARTICULAR PURPOSE. *
17 * *
18 * As a special exception under Section 7 of GPL version 3, you are granted *
19 * additional permissions described in the GCC Runtime Library Exception, *
20 * version 3.1, as published by the Free Software Foundation. *
21 * *
22 * You should have received a copy of the GNU General Public License and *
23 * a copy of the GCC Runtime Library Exception along with this program; *
24 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
25 * <http://www.gnu.org/licenses/>. *
26 * *
27 * GNAT was originally developed by the GNAT team at New York University. *
28 * Extensive contributions were provided by Ada Core Technologies Inc. *
29 * *
30 ****************************************************************************/
31
32 /* This file provides access to the C-language errno to the Ada interface
33 for POSIX. It is not possible in general to import errno, even in
34 Ada compilers that allow (as GNAT does) the importation of variables,
35 as it may be defined using a macro.
36 */
37
38
39 #define _REENTRANT
40 #define _THREAD_SAFE
41
42 #ifdef MaRTE
43
44 /* MaRTE OS provides its own implementation of errno related functionality. We
45 want to ensure the use of the MaRTE version for tasking programs (the MaRTE
46 library will not be linked if no tasking constructs are used), so we use the
47 weak symbols mechanism to use the MaRTE version whenever is available. */
48
49 #pragma weak __get_errno
50 #pragma weak __set_errno
51
52 #endif
53
54 #include <errno.h>
55 int
56 __get_errno(void)
57 {
58 return errno;
59 }
60
61 #ifndef __ANDROID__
62 void
63 __set_errno(int err)
64 {
65 errno = err;
66 }
67 #endif