/* DLIFE Copyright (C) 2000 Richard W.M. Jones <rich@annexia.org>
 * and other authors listed in the ``AUTHORS'' file.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Id: soup.h,v 1.1 2002/04/05 14:40:28 rich Exp $
 */

#ifndef soup_h
#define soup_h

#include "config.h"

#include "types.h"
#include "state.h"
#include "crc.h"

/* How far away can a daughter be from its mother? */
#define MAX_SPAWN_DISTANCE 8192

struct soup_frag
{
  addr_t base;			/* Base address of this fragment. */
  int len;			/* Length of this fragment. */

  /* These are kept on a circular doubly-linked list. */
  struct soup_frag *next, *prev;
};

extern inline addr_t
raddr_to_addr (const struct state *state,
	       const struct soup_frag *frag, reg_t raddr)
{
  return (frag->base + raddr) & (state->soup_size - 1);
}

extern inline int
get_soup (const struct state *state,
	  const struct soup_frag *frag, reg_t raddr)
{
  addr_t addr = raddr_to_addr (state, frag, raddr);
  return state->soup[addr];
}

extern inline void
set_soup (struct state *state,
	  const struct soup_frag *frag, int v, reg_t raddr)
{
  addr_t addr = raddr_to_addr (state, frag, raddr);
  state->soup[addr] = v;
}

extern void soup_init (struct state *state, int _soup_size);

extern struct soup_frag *soup_frag_malloc (struct state *state,
					   struct soup_frag *, reg_t);
extern void soup_frag_free (struct state *state, struct soup_frag *);

extern void soup_state_save (struct state *state, FILE *fp);
extern void soup_state_load (struct state *state, FILE *fp);

extern void soup_check (struct state *state);

extern crc_t soup_frag_compute_crc32 (const struct state *state,
				      const struct soup_frag *frag);

#endif /* soup_h */