/**

 * $Id: syscall.h,v 1.2 2006-07-06 08:47:33 nkeynes Exp $

 * 

 * Generic syscall support - ability to add hooks into SH4 code to call out

 * to the emu.

 *

 * Copyright (c) 2005 Nathan Keynes.

 *

 * 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.

 */

#ifndef dream_syscall_H

#define dream_syscall_H 1

#include <stdint.h>

#include <glib/gtypes.h>

#ifdef __cplusplus

extern "C" {

#endif

typedef void (*syscall_hook_func_t)( uint32_t hook_id );

/**

 * Define a new hook without an indirect vector

 */

void syscall_add_hook( uint32_t hook_id, syscall_hook_func_t hook );

/**

 * Define a new hook which indirects through the specified vector address

 * (which must be somewhere in main SH4 ram).

 */

void syscall_add_hook_vector( uint32_t hook_id, uint32_t vector_addr,

			      syscall_hook_func_t hook );

/**

 * Invoke a syscall from the SH4

 */

void syscall_invoke( uint32_t hook_id );

/**

 * Repatch all syscall vectors (eg in case of system reset)

 */

void syscall_repatch_vectors( );

/************************ Standard syscall hacks ************************/

/**

 * Install the BIOS emu hack into ram (sets the vectors at 8C0000B0 through 

 * 8C0000C0)

 */

void bios_install( void );

/**

 * Install the DCLoad syscall hack

 */

void dcload_install( void );

/**

 * Set the flag that indicates whether the dcload exit() syscall will be

 * honoured by exiting the VM.

 */

void dcload_set_allow_exit( gboolean allow );

#ifdef __cplusplus

}

#endif

#endif