gcc/ada/aux-io.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT RUN-TIME COMPONENTS                         *
   4  *                                                                          *
   5  *                              A - T R A N S                               *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *           Copyright (C) 1992-2003 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 2,  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.  See the GNU General Public License *
  17  * for  more details.  You should have  received  a copy of the GNU General *
  18  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  19  * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
  20  * Boston, MA 02110-1301, USA.                                              *
  21  *                                                                          *
  22  * As a  special  exception,  if you  link  this file  with other  files to *
  23  * produce an executable,  this file does not by itself cause the resulting *
  24  * executable to be covered by the GNU General Public License. This except- *
  25  * ion does not  however invalidate  any other reasons  why the  executable *
  26  * file might be covered by the  GNU Public License.                        *
  27  *                                                                          *
  28  * GNAT was originally developed  by the GNAT team at  New York University. *
  29  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  30  *                                                                          *
  31  ****************************************************************************/
  32
  33 #include <stdio.h>
  34
  35 #ifdef IN_RTS
  36 #include "tconfig.h"
  37 #include "tsystem.h"
  38 #else
  39 #include "config.h"
  40 #include "system.h"
  41 #endif
  42
  43 /* Function wrappers are needed to access the values from Ada which are
  44    defined as C macros.  */
  45
  46 FILE *c_stdin (void);
  47 FILE *c_stdout (void);
  48 FILE *c_stderr (void);
  49 int seek_set_function (void);
  50 int seek_end_function (void);
  51 void *null_function (void);
  52 int c_fileno (FILE *);
  53
  54 FILE *
  55 c_stdin (void)
  56 {
  57   return stdin;
  58 }
  59
  60 FILE *
  61 c_stdout (void)
  62 {
  63   return stdout;
  64 }
  65
  66 FILE *
  67 c_stderr (void)
  68 {
  69   return stderr;
  70 }
  71
  72 #ifndef SEEK_SET    /* Symbolic constants for the "fseek" function: */
  73 #define SEEK_SET 0  /* Set file pointer to offset */
  74 #define SEEK_CUR 1  /* Set file pointer to its current value plus offset */
  75 #define SEEK_END 2  /* Set file pointer to the size of the file plus offset */
  76 #endif
  77
  78 int
  79 seek_set_function (void)
  80 {
  81   return SEEK_SET;
  82 }
  83
  84 int
  85 seek_end_function (void)
  86 {
  87   return SEEK_END;
  88 }
  89
  90 void *null_function (void)
  91 {
  92   return NULL;
  93 }
  94
  95 int
  96 c_fileno (FILE *s)
  97 {
  98   return fileno (s);
  99 }