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65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*****************************************************************************
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*
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* sh2.h
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* Portable Hitachi SH-2 (SH7600 family) emulator interface
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*
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* Copyright Juergen Buchmueller <pullmoll@t-online.de>,
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* all rights reserved.
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*
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* - This source code is released as freeware for non-commercial purposes.
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* - You are free to use and redistribute this code in modified or
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* unmodified form, provided you list me in the credits.
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* - If you modify this source code, you must add a notice to each modified
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* source file that it has been changed. If you're a nice person, you
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* will clearly mark each change too. :)
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* - If you wish to use this for commercial purposes, please contact me at
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* pullmoll@t-online.de
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* - The author of this copywritten work reserves the right to change the
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* terms of its usage and license at any time, including retroactively
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* - This entire notice must remain in the source code.
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*
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* This work is based on <tiraniddo@hotmail.com> C/C++ implementation of
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* the SH-2 CPU core and was heavily changed to the MAME CPU requirements.
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* Thanks also go to Chuck Mason <chukjr@sundail.net> and Olivier Galibert
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* <galibert@pobox.com> for letting me peek into their SEMU code :-)
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*
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*****************************************************************************/
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#pragma once
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#ifndef __SH2_H__
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#define __SH2_H__
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typedef struct
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{
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UINT32 r[16];
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UINT32 ppc;
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UINT32 pc;
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UINT32 pr;
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UINT32 sr;
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UINT32 gbr, vbr;
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UINT32 mach, macl;
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UINT32 ea;
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UINT32 delay;
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UINT32 test_irq;
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int pending_irl;
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int pending_int_irq; // internal irq
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int pending_int_vector;
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void (*irq_callback)(int id, int level);
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int is_slave;
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UINT32 cycles_aim; // subtract sh2_icount to get global counter
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} SH2;
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SH2 *sh2; // active sh2
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extern int sh2_icount;
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void sh2_init(SH2 *sh2, int is_slave);
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void sh2_reset(SH2 *sh2);
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int sh2_execute(SH2 *sh2_, int cycles);
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void sh2_irl_irq(SH2 *sh2, int level);
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void sh2_internal_irq(SH2 *sh2, int level, int vector);
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#endif /* __SH2_H__ */
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