/* Module support.
   Copyright (C) 1996, 1997, 2007, 2008, 2009, 2010
   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 3 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, see <http://www.gnu.org/licenses/>.  */

/* This file is intended to be included by sim-base.h.  */

#ifndef SIM_MODULES_H
#define SIM_MODULES_H

/* Modules are addons to the simulator that perform a specific function
   (e.g. tracing, profiling, memory subsystem, etc.).  Some modules are
   builtin, and others are added at configure time.  The intent is to
   provide a uniform framework for all of the pieces that make up the
   simulator.

   TODO: Add facilities for saving/restoring state to/from a file.  */


/* Various function types.  */

typedef SIM_RC (MODULE_INSTALL_FN) (SIM_DESC);
typedef SIM_RC (MODULE_INIT_FN) (SIM_DESC);
typedef SIM_RC (MODULE_RESUME_FN) (SIM_DESC);
typedef SIM_RC (MODULE_SUSPEND_FN) (SIM_DESC);
typedef void   (MODULE_UNINSTALL_FN) (SIM_DESC);
typedef void   (MODULE_INFO_FN) (SIM_DESC, int);


/* Lists of installed handlers.  */

typedef struct module_init_list {
  struct module_init_list *next;
  MODULE_INIT_FN *fn;
} MODULE_INIT_LIST;

typedef struct module_resume_list {
  struct module_resume_list *next;
  MODULE_RESUME_FN *fn;
} MODULE_RESUME_LIST;

typedef struct module_suspend_list {
  struct module_suspend_list *next;
  MODULE_SUSPEND_FN *fn;
} MODULE_SUSPEND_LIST;

typedef struct module_uninstall_list {
  struct module_uninstall_list *next;
  MODULE_UNINSTALL_FN *fn;
} MODULE_UNINSTALL_LIST;

typedef struct module_info_list {
  struct module_info_list *next;
  MODULE_INFO_FN *fn;
} MODULE_INFO_LIST;


/* Functions to register module with various handler lists */

SIM_RC sim_module_install (SIM_DESC);
void sim_module_uninstall (SIM_DESC);
void sim_module_add_init_fn (SIM_DESC sd, MODULE_INIT_FN fn);
void sim_module_add_resume_fn (SIM_DESC sd, MODULE_RESUME_FN fn);
void sim_module_add_suspend_fn (SIM_DESC sd, MODULE_SUSPEND_FN fn);
void sim_module_add_uninstall_fn (SIM_DESC sd, MODULE_UNINSTALL_FN fn);
void sim_module_add_info_fn (SIM_DESC sd, MODULE_INFO_FN fn);


/* Initialize installed modules before argument processing.
   Called by sim_open.  */
SIM_RC sim_pre_argv_init (SIM_DESC sd, const char *myname);

/* Initialize installed modules after argument processing.
   Called by sim_open.  */
SIM_RC sim_post_argv_init (SIM_DESC sd);

/* Re-initialize the module.  Called by sim_create_inferior. */
SIM_RC sim_module_init (SIM_DESC sd);

/* Suspend/resume modules.  Called by sim_run or sim_resume */
SIM_RC sim_module_suspend (SIM_DESC sd);
SIM_RC sim_module_resume (SIM_DESC sd);

/* Report general information on module */
void sim_module_info (SIM_DESC sd, int verbose);


/* Module private data */

struct module_list {

  /* List of installed module `init' handlers */
  MODULE_INIT_LIST *init_list;

  /* List of installed module `uninstall' handlers.  */
  MODULE_UNINSTALL_LIST *uninstall_list;

  /* List of installed module `resume' handlers.  */
  MODULE_RESUME_LIST *resume_list;

  /* List of installed module `suspend' handlers.  */
  MODULE_SUSPEND_LIST *suspend_list;

  /* List of installed module `info' handlers.  */
  MODULE_INFO_LIST *info_list;

};


#endif /* SIM_MODULES_H */