nkeynes@102: /**
nkeynes@561:  * $Id$
nkeynes@102:  * 
nkeynes@102:  * Generic syscall support - ability to add hooks into SH4 code to call out
nkeynes@102:  * to the emu.
nkeynes@102:  *
nkeynes@102:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@102:  *
nkeynes@102:  * This program is free software; you can redistribute it and/or modify
nkeynes@102:  * it under the terms of the GNU General Public License as published by
nkeynes@102:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@102:  * (at your option) any later version.
nkeynes@102:  *
nkeynes@102:  * This program is distributed in the hope that it will be useful,
nkeynes@102:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@102:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@102:  * GNU General Public License for more details.
nkeynes@102:  */
nkeynes@736: #ifndef lxdream_syscall_H
nkeynes@736: #define lxdream_syscall_H 1
nkeynes@102: 
nkeynes@102: #include <stdint.h>
nkeynes@102: #include <glib/gtypes.h>
nkeynes@102: 
nkeynes@102: #ifdef __cplusplus
nkeynes@102: extern "C" {
nkeynes@102: #endif
nkeynes@102: 
nkeynes@102: 
nkeynes@102: typedef void (*syscall_hook_func_t)( uint32_t hook_id );
nkeynes@102: 
nkeynes@102: 
nkeynes@102: /**
nkeynes@102:  * Define a new hook without an indirect vector
nkeynes@102:  */
nkeynes@102: void syscall_add_hook( uint32_t hook_id, syscall_hook_func_t hook );
nkeynes@102: 
nkeynes@102: /**
nkeynes@102:  * Define a new hook which indirects through the specified vector address
nkeynes@102:  * (which must be somewhere in main SH4 ram).
nkeynes@102:  */
nkeynes@102: void syscall_add_hook_vector( uint32_t hook_id, uint32_t vector_addr,
nkeynes@102: 			      syscall_hook_func_t hook );
nkeynes@102: 
nkeynes@102: /**
nkeynes@102:  * Invoke a syscall from the SH4
nkeynes@102:  */
nkeynes@102: void syscall_invoke( uint32_t hook_id );
nkeynes@102: 
nkeynes@102: /**
nkeynes@102:  * Repatch all syscall vectors (eg in case of system reset)
nkeynes@102:  */
nkeynes@102: void syscall_repatch_vectors( );
nkeynes@102: 
nkeynes@102: /************************ Standard syscall hacks ************************/
nkeynes@102: 
nkeynes@102: /**
nkeynes@102:  * Install the BIOS emu hack into ram (sets the vectors at 8C0000B0 through 
nkeynes@102:  * 8C0000C0)
nkeynes@102:  */
nkeynes@102: void bios_install( void );
nkeynes@102: 
nkeynes@1100: void bios_boot( uint32_t syscallid );
nkeynes@1100: 
nkeynes@102: /**
nkeynes@102:  * Install the DCLoad syscall hack
nkeynes@102:  */
nkeynes@102: void dcload_install( void );
nkeynes@102: 
nkeynes@182: /**
nkeynes@182:  * Set the flag that indicates whether the dcload exit() syscall will be
nkeynes@182:  * honoured by exiting the VM.
nkeynes@182:  */
nkeynes@209: void dcload_set_allow_unsafe( gboolean allow );
nkeynes@182: 
nkeynes@1014: #define IS_SYSCALL(pc)  (((uint32_t)pc)>=0xFFFFFF00)
nkeynes@1014: 
nkeynes@102: #ifdef __cplusplus
nkeynes@102: }
nkeynes@102: #endif
nkeynes@736: 
nkeynes@736: #endif /* !lxdream_syscall_H */