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/*
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 * Project: S.Ha.R.K.
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 *
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 * Coordinators:
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 *   Giorgio Buttazzo    <giorgio@sssup.it>
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *
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 * Authors     :
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *   Massimiliano Giorgi <massy@gandalf.sssup.it>
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 *   Luca Abeni          <luca@gandalf.sssup.it>
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 *   (see the web pages for full authors list)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://shark.sssup.it
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 */
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/**
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 ------------
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 CVS :        $Id: malloc.c,v 1.2 2003-09-12 10:11:27 giacomo Exp $
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 File:        $File$
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 Revision:    $Revision: 1.2 $
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 Last update: $Date: 2003-09-12 10:11:27 $
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 ------------
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 malloc:
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 the size of the block is stored into the first 4 bytes
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**/
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/*
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 * Copyright (C) 2000 Paolo Gai
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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#include <kernel/func.h>
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void *malloc (size_t size)
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{
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  char *p;
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  SYS_FLAGS f;
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  f = kern_fsave();
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  p = kern_alloc(size + sizeof(size_t));
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  if (!p) {
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    kern_frestore(f);
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    return 0;
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  }
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  *((size_t *) p) = size + sizeof(size_t);
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  kern_frestore(f);
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  return p + sizeof(size_t);
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}
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