gcc/ada/io-aux.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT RUN-TIME COMPONENTS                         *
   4  *                                                                          *
   5  *                              A - T R A N S                               *
   6  *                                                                          *
   7  *                          C Implementation File                           *
   8  *                                                                          *
   9  *                                                                          *
  10  *           Copyright (C) 1992-2001 Free Software Foundation, Inc.         *
  11  *                                                                          *
  12  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  13  * terms of the  GNU General Public License as published  by the Free Soft- *
  14  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  16  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  18  * for  more details.  You should have  received  a copy of the GNU General *
  19  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  20  * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
  21  * MA 02111-1307, USA.                                                      *
  22  *                                                                          *
  23  * As a  special  exception,  if you  link  this file  with other  files to *
  24  * produce an executable,  this file does not by itself cause the resulting *
  25  * executable to be covered by the GNU General Public License. This except- *
  26  * ion does not  however invalidate  any other reasons  why the  executable *
  27  * file might be covered by the  GNU Public License.                        *
  28  *                                                                          *
  29  * GNAT was originally developed  by the GNAT team at  New York University. *
  30  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  31  *                                                                          *
  32  ****************************************************************************/
  33
  34 #include <stdio.h>
  35
  36 /* Function wrappers are needed to access the values from Ada which are */
  37 /* defined as C macros.                                                 */
  38
  39 FILE *c_stdin  (void) { return stdin; }
  40 FILE *c_stdout (void) { return stdout;}
  41 FILE *c_stderr (void) { return stderr;}
  42
  43 #ifndef SEEK_SET    /* Symbolic constants for the "fseek" function: */
  44 #define SEEK_SET 0  /* Set file pointer to offset */
  45 #define SEEK_CUR 1  /* Set file pointer to its current value plus offset */
  46 #define SEEK_END 2  /* Set file pointer to the size of the file plus offset */
  47 #endif
  48
  49 int   seek_set_function (void)  { return SEEK_SET; }
  50 int   seek_end_function (void)  { return SEEK_END; }
  51 void *null_function     (void)  { return NULL;     }
  52
  53 int c_fileno (FILE *s) { return fileno (s); }