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/*  This file is part of the program psim.

    Copyright (C) 1994-1995,1998, Andrew Cagney <cagney@highland.com.au>

    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.

    */

#ifndef _SIM_CALLBACKS_H_

#define _SIM_CALLBACKS_H_

/* Simulator output:

   Functions to report diagnostic information to the user. */

#define printf_filtered sim_io_printf_filtered

void sim_io_printf_filtered

(const char *msg, ...) __attribute__ ((format (printf, 1, 2)));

void NORETURN error

(const char *msg, ...);

/* External environment:

   Some HOST OS's require regular polling so that external events such

   as GUI io can be handled. */

void sim_io_poll_quit

(void);

/* Model I/O:

   These functions provide the interface between the modeled targets

   standard input and output streams and the hosts external

   environment.

   The underlying model is responsible for co-ordinating I/O

   interactions such as:

        main()

        {

          const char mess[] = "Hello World\r\n";

          int out;

          out = dup(1);

          close(1);

          write(out, mess, sizeof(mess))

        }

   That is to say, the underlying model would, in implementing dup()

   recorded the fact that any output directed at fid-OUT should be

   displayed using sim_io_write_stdout().  While for the code stub:

        main()

        {

          const char mess[] = "Hello World\r\n";

          int out;

          close(1);

          out = open("output", 0x0001|0x0200, 0); // write+create

          out = dup(1);

          write(out, mess, sizeof(mess))

        }

   would result in output to fid-1 being directed towards the file

   "output". */

int

sim_io_write_stdout

(const char *buf,

 int sizeof_buf);

int

sim_io_write_stderr

(const char *buf,

 int sizeof_buf);

/* read results */

enum { sim_io_eof = -1, sim_io_not_ready = -2, }; /* See: IEEE 1275 */

int

sim_io_read_stdin

(char *buf,

 int sizeof_buf);

#define flush_stdoutput sim_io_flush_stdoutput

void sim_io_flush_stdoutput

(void);

/* Simulator instance.  */

extern psim *simulator;

/* Memory management with an allocator that clears memory before use. */

void *zalloc

(long size);

#define ZALLOC(TYPE) (TYPE*)zalloc(sizeof (TYPE))

void zfree(void*);

#endif