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/*  This file is part of the program psim.

    Copyright (C) 1994-1996, 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 _PSIM_H_

#define _PSIM_H_

#include "basics.h"

/* the system object */

/* typedef struct _psim psim; */

/* typedef struct _device device; */

/* when the `system' stops, find out why.  FIXME - at this point this

   is really a bit puzzling.  After all, how can there be a status

   when there several processors involved */

typedef struct _psim_status {

  int cpu_nr;

  stop_reason reason;

  int signal;

  unsigned_word program_counter;

} psim_status;

/* create an initial device tree and then populate it using

   information obtained from either the command line or a file */

extern device *psim_tree

(void);

extern char **psim_options

(device *root,

 char **argv);

extern void psim_command

(device *root,

 char **argv);

extern void psim_merge_device_file

(device *root,

 const char *file_name);

extern void psim_usage

(int verbose);

/* create a new simulator from the device tree */

extern psim *psim_create

(const char *file_name,

 device *root);

/* Given the created simulator (re) initialize it */

extern void psim_init

(psim *system);

extern void psim_stack

(psim *system,

 char **argv,

 char **envp);

/* Run/stop the system */

extern void psim_step

(psim *system);

extern void psim_run

(psim *system);

extern void psim_restart

(psim *system,

 int cpu_nr);

extern void psim_set_halt_and_restart

(psim *system,

 void *halt_jmp_buf,

 void *restart_jmp_buf);

extern void psim_clear_halt_and_restart

(psim *system);

extern void psim_stop

(psim *system);

extern void psim_halt

(psim *system,

 int cpu_nr,

 stop_reason reason,

 int signal);

extern int psim_last_cpu

(psim *system);

extern int psim_nr_cpus

(psim *system);

extern psim_status psim_get_status

(psim *system);

/* reveal the internals of the simulation.  Grant access to the

   processor (cpu) device tree (device) and events (event_queue). */

extern cpu *psim_cpu

(psim *system,

 int cpu_nr);

extern device *psim_device

(psim *system,

 const char *path);

extern event_queue *psim_event_queue

(psim *system);

/* Manipulate the state (registers or memory) of a processor within

   the system.  In the case of memory, the read/write is performed

   using the specified processors address translation tables.

   Where applicable, WHICH_CPU == -1 indicates all processors and

   WHICH_CPU == <nr_cpus> indicates the `current' processor.

   The register functions return the size of the register, or 0 if the

   register's name is not recognized.  */

extern int psim_read_register

(psim *system,

 int which_cpu,

 void *host_ordered_buf,

 const char reg[],

 transfer_mode mode);

extern int psim_write_register

(psim *system,

 int which_cpu,

 const void *buf,

 const char reg[],

 transfer_mode mode);

extern unsigned psim_read_memory

(psim *system,

 int which_cpu,

 void *buf,

 unsigned_word vaddr,

 unsigned len);

extern unsigned psim_write_memory

(psim *system,

 int which_cpu,

 const void *buf,

 unsigned_word vaddr,

 unsigned len,

 int violate_read_only_section);

extern void psim_print_info

(psim *system,

 int verbose);

#endif /* _PSIM_H_ */