1 /****************************************************************************
2  *                                                                          *
3  *                         GNAT RUN-TIME COMPONENTS                         *
4  *                                                                          *
5  *                              A - T R A N S                               *
6  *                                                                          *
7  *                          C Implementation File                           *
8  *                                                                          *
9  *           Copyright (C) 1992-2011, 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 #include <stdio.h>
33 
34 #ifdef IN_RTS
35 #include "tconfig.h"
36 #include "tsystem.h"
37 #else
38 #include "config.h"
39 #include "system.h"
40 #endif
41 
42 /* Don't use macros versions of this functions on VxWorks since they cause
43    imcompatible changes in some VxWorks versions */
44 #ifdef __vxworks
45 #undef getchar
46 #undef putchar
47 #undef feof
48 #undef ferror
49 #undef fileno
50 #endif
51 
52 /* Function wrappers are needed to access the values from Ada which are
53    defined as C macros.  */
54 
55 FILE *c_stdin (void);
56 FILE *c_stdout (void);
57 FILE *c_stderr (void);
58 int seek_set_function (void);
59 int seek_end_function (void);
60 void *null_function (void);
61 int c_fileno (FILE *);
62 
63 FILE *
c_stdin(void)64 c_stdin (void)
65 {
66   return stdin;
67 }
68 
69 FILE *
c_stdout(void)70 c_stdout (void)
71 {
72   return stdout;
73 }
74 
75 FILE *
c_stderr(void)76 c_stderr (void)
77 {
78   return stderr;
79 }
80 
81 #ifndef SEEK_SET    /* Symbolic constants for the "fseek" function: */
82 #define SEEK_SET 0  /* Set file pointer to offset */
83 #define SEEK_CUR 1  /* Set file pointer to its current value plus offset */
84 #define SEEK_END 2  /* Set file pointer to the size of the file plus offset */
85 #endif
86 
87 int
seek_set_function(void)88 seek_set_function (void)
89 {
90   return SEEK_SET;
91 }
92 
93 int
seek_end_function(void)94 seek_end_function (void)
95 {
96   return SEEK_END;
97 }
98 
null_function(void)99 void *null_function (void)
100 {
101   return NULL;
102 }
103 
104 int
c_fileno(FILE * s)105 c_fileno (FILE *s)
106 {
107   return fileno (s);
108 }
109