193 lines
6.9 KiB
C
193 lines
6.9 KiB
C
|
/* ======================================================================== */
|
||
|
|
/* ========================= LICENSING & COPYRIGHT ======================== */
|
||
|
|
/* ======================================================================== */
|
||
|
|
/*
|
||
|
|
* MUSASHI
|
||
|
|
* Version 3.4
|
||
|
|
*
|
||
|
|
* A portable Motorola M680x0 processor emulation engine.
|
||
|
|
* Copyright 1998-2001 Karl Stenerud. All rights reserved.
|
||
|
|
*
|
||
|
|
* This code may be freely used for non-commercial purposes as long as this
|
||
|
|
* copyright notice remains unaltered in the source code and any binary files
|
||
|
|
* containing this code in compiled form.
|
||
|
|
*
|
||
|
|
* All other lisencing terms must be negotiated with the author
|
||
|
|
* (Karl Stenerud).
|
||
|
|
*
|
||
|
|
* The latest version of this code can be obtained at:
|
||
|
|
* http://kstenerud.cjb.net
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef M68KCONF__HEADER
|
||
|
|
#define M68KCONF__HEADER
|
||
|
|
|
||
|
|
|
||
|
|
/* Configuration switches.
|
||
|
|
* Use OPT_SPECIFY_HANDLER for configuration options that allow callbacks.
|
||
|
|
* OPT_SPECIFY_HANDLER causes the core to link directly to the function
|
||
|
|
* or macro you specify, rather than using callback functions whose pointer
|
||
|
|
* must be passed in using m68k_set_xxx_callback().
|
||
|
|
*/
|
||
|
|
#define OPT_OFF 0
|
||
|
|
#define OPT_ON 1
|
||
|
|
#define OPT_SPECIFY_HANDLER 2
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* ============================== MAME STUFF ============================== */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
/* If you're compiling this for MAME, only change M68K_COMPILE_FOR_MAME
|
||
|
|
* to OPT_ON and use m68kmame.h to configure the 68k core.
|
||
|
|
*/
|
||
|
|
#ifndef M68K_COMPILE_FOR_MAME
|
||
|
|
#define M68K_COMPILE_FOR_MAME OPT_OFF
|
||
|
|
#endif /* M68K_COMPILE_FOR_MAME */
|
||
|
|
|
||
|
|
|
||
|
|
#if M68K_COMPILE_FOR_MAME == OPT_OFF
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* ============================= CONFIGURATION ============================ */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
/* Turn ON if you want to use the following M68K variants */
|
||
|
|
#define M68K_EMULATE_010 OPT_ON
|
||
|
|
#define M68K_EMULATE_EC020 OPT_ON
|
||
|
|
#define M68K_EMULATE_020 OPT_ON
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, the CPU will call m68k_read_immediate_xx() for immediate addressing
|
||
|
|
* and m68k_read_pcrelative_xx() for PC-relative addressing.
|
||
|
|
* If off, all read requests from the CPU will be redirected to m68k_read_xx()
|
||
|
|
*/
|
||
|
|
#define M68K_SEPARATE_READS OPT_OFF
|
||
|
|
|
||
|
|
/* If ON, the CPU will call m68k_write_32_pd() when it executes move.l with a
|
||
|
|
* predecrement destination EA mode instead of m68k_write_32().
|
||
|
|
* To simulate real 68k behavior, m68k_write_32_pd() must first write the high
|
||
|
|
* word to [address+2], and then write the low word to [address].
|
||
|
|
*/
|
||
|
|
#define M68K_SIMULATE_PD_WRITES OPT_OFF
|
||
|
|
|
||
|
|
/* If ON, CPU will call the interrupt acknowledge callback when it services an
|
||
|
|
* interrupt.
|
||
|
|
* If off, all interrupts will be autovectored and all interrupt requests will
|
||
|
|
* auto-clear when the interrupt is serviced.
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_INT_ACK OPT_SPECIFY_HANDLER
|
||
|
|
#define M68K_INT_ACK_CALLBACK(A) cpu_irq_ack(A)
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, CPU will call the breakpoint acknowledge callback when it encounters
|
||
|
|
* a breakpoint instruction and it is running a 68010+.
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_BKPT_ACK OPT_OFF
|
||
|
|
#define M68K_BKPT_ACK_CALLBACK() your_bkpt_ack_handler_function()
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, the CPU will monitor the trace flags and take trace exceptions
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_TRACE OPT_OFF
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, CPU will call the output reset callback when it encounters a reset
|
||
|
|
* instruction.
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_RESET OPT_SPECIFY_HANDLER
|
||
|
|
#define M68K_RESET_CALLBACK() cpu_pulse_reset()
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, CPU will call the set fc callback on every memory access to
|
||
|
|
* differentiate between user/supervisor, program/data access like a real
|
||
|
|
* 68000 would. This should be enabled and the callback should be set if you
|
||
|
|
* want to properly emulate the m68010 or higher. (moves uses function codes
|
||
|
|
* to read/write data from different address spaces)
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_FC OPT_SPECIFY_HANDLER
|
||
|
|
#define M68K_SET_FC_CALLBACK(A) cpu_set_fc(A)
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, CPU will call the pc changed callback when it changes the PC by a
|
||
|
|
* large value. This allows host programs to be nicer when it comes to
|
||
|
|
* fetching immediate data and instructions on a banked memory system.
|
||
|
|
*/
|
||
|
|
#define M68K_MONITOR_PC OPT_OFF
|
||
|
|
#define M68K_SET_PC_CALLBACK(A) your_pc_changed_handler_function(A)
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, CPU will call the instruction hook callback before every
|
||
|
|
* instruction.
|
||
|
|
*/
|
||
|
|
#define M68K_INSTRUCTION_HOOK OPT_SPECIFY_HANDLER
|
||
|
|
#define M68K_INSTRUCTION_CALLBACK() cpu_instr_callback()
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, the CPU will emulate the 4-byte prefetch queue of a real 68000 */
|
||
|
|
#define M68K_EMULATE_PREFETCH OPT_ON
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, the CPU will generate address error exceptions if it tries to
|
||
|
|
* access a word or longword at an odd address.
|
||
|
|
* NOTE: This is only emulated properly for 68000 mode.
|
||
|
|
*/
|
||
|
|
#define M68K_EMULATE_ADDRESS_ERROR OPT_ON
|
||
|
|
|
||
|
|
|
||
|
|
/* Turn ON to enable logging of illegal instruction calls.
|
||
|
|
* M68K_LOG_FILEHANDLE must be #defined to a stdio file stream.
|
||
|
|
* Turn on M68K_LOG_1010_1111 to log all 1010 and 1111 calls.
|
||
|
|
*/
|
||
|
|
#define M68K_LOG_ENABLE OPT_OFF
|
||
|
|
#define M68K_LOG_1010_1111 OPT_OFF
|
||
|
|
#define M68K_LOG_FILEHANDLE some_file_handle
|
||
|
|
|
||
|
|
|
||
|
|
/* ----------------------------- COMPATIBILITY ---------------------------- */
|
||
|
|
|
||
|
|
/* The following options set optimizations that violate the current ANSI
|
||
|
|
* standard, but will be compliant under the forthcoming C9X standard.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/* If ON, the enulation core will use 64-bit integers to speed up some
|
||
|
|
* operations.
|
||
|
|
*/
|
||
|
|
#define M68K_USE_64_BIT OPT_OFF
|
||
|
|
|
||
|
|
|
||
|
|
/* Set to your compiler's static inline keyword to enable it, or
|
||
|
|
* set it to blank to disable it.
|
||
|
|
* If you define INLINE in the makefile, it will override this value.
|
||
|
|
* NOTE: not enabling inline functions will SEVERELY slow down emulation.
|
||
|
|
*/
|
||
|
|
#ifndef INLINE
|
||
|
|
#define INLINE static __inline__
|
||
|
|
#endif /* INLINE */
|
||
|
|
|
||
|
|
#endif /* M68K_COMPILE_FOR_MAME */
|
||
|
|
|
||
|
|
#include "sim.h"
|
||
|
|
|
||
|
|
#define m68k_read_memory_8(A) cpu_read_byte(A)
|
||
|
|
#define m68k_read_memory_16(A) cpu_read_word(A)
|
||
|
|
#define m68k_read_memory_32(A) cpu_read_long(A)
|
||
|
|
|
||
|
|
#define m68k_read_disassembler_16(A) cpu_read_word_dasm(A)
|
||
|
|
#define m68k_read_disassembler_32(A) cpu_read_long_dasm(A)
|
||
|
|
|
||
|
|
#define m68k_write_memory_8(A, V) cpu_write_byte(A, V)
|
||
|
|
#define m68k_write_memory_16(A, V) cpu_write_word(A, V)
|
||
|
|
#define m68k_write_memory_32(A, V) cpu_write_long(A, V)
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* ============================== END OF FILE ============================= */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
#endif /* M68KCONF__HEADER */
|