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/* Simulator pseudo baseclass.
Copyright (C) 1997 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB, the GNU debugger.
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, 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. */
/* This file is meant to be included by sim-basics.h. */
#ifndef SIM_BASE_H
#define SIM_BASE_H
/* Global pointer to current state while sim_resume is running.
On a machine with lots of registers, it might be possible to reserve
one of them for current_state. However on a machine with few registers
current_state can't permanently live in one and indirecting through it
will be slower [in which case one can have sim_resume set globals from
current_state for faster access].
If CURRENT_STATE_REG is defined, it means current_state is living in
a global register. */
#ifdef CURRENT_STATE_REG
/* FIXME: wip */
#else
extern struct sim_state *current_state;
#endif
/* Simulator state pseudo base-class.
Each simulator is required to have a sim-main.h file that includes
sim-basics.h and defines struct sim_state to be:
struct sim_state {
struct sim_state_base base;
... simulator specific members ...
};
*/
struct sim_state_base {
/* Marker for those wanting to do sanity checks. */
int magic;
#define SIM_MAGIC_NUMBER 0x4242
#define STATE_MAGIC(sd) ((sd)->base.magic)
/* Simulator's argv[0]. */
const char *my_name;
#define STATE_MY_NAME(sd) ((sd)->base.my_name)
/* Who opened the simulator. */
SIM_OPEN_KIND open_kind;
#define STATE_OPEN_KIND(sd) ((sd)->base.open_kind)
/* The host callbacks. */
struct host_callback_struct *callback;
#define STATE_CALLBACK(sd) ((sd)->base.callback)
#if 0 /* FIXME: Not ready yet. */
/* Stuff defined in sim-config.h. */
struct sim_config config;
#define STATE_CONFIG(sd) ((sd)->base.config)
#endif
};
/* Functions for allocating/freeing a sim_state. */
SIM_DESC sim_state_alloc PARAMS ((void));
void sim_state_free PARAMS ((SIM_DESC));
#endif /* SIM_BASE_H */
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