mes/lib/linux+tcc.c

/* -*-comment-start: "//";comment-end:""-*-
 * Mes --- Maxwell Equations of Software
 * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of Mes.
 *
 * Mes is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * Mes is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

#define SYS_close  0x06
#define SYS_lseek  0x13
#define SYS_unlink 0x0a
#define SYS_rmdir  0x28
#define SYS_stat   0x6a
#define SYS_getcwd 0xb7

int
close (int filedes)
{
  if (_ungetc_fd == filedes)
    {
      _ungetc_pos = -1;
      _ungetc_fd = -1;
    }
  return _sys_call1 (SYS_close, (int)filedes);
}

off_t
lseek (int filedes, off_t offset, int whence)
{
  return _sys_call3 (SYS_lseek, (int)filedes, (int)offset, (int)whence);
}

int
unlink (char const *file_name)
{
  return _sys_call1 (SYS_unlink, (int)file_name);
}

int
rmdir (char const *file_name)
{
  return _sys_call1 (SYS_rmdir, (int)file_name);
}

int
stat (char const *file_name, struct stat *statbuf)
{
  return _sys_call2 (SYS_stat, (int)file_name, (int)statbuf);
}

char *
getcwd (char *buffer, size_t size)
{
  return _sys_call2 (SYS_getcwd, (int)buffer, (int)size);
}