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Diffstat (limited to 'm68kconf.h')
| -rw-r--r-- | m68kconf.h | 216 |
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diff --git a/m68kconf.h b/m68kconf.h new file mode 100644 index 0000000..09e3e95 --- /dev/null +++ b/m68kconf.h @@ -0,0 +1,216 @@ +/* ======================================================================== */ +/* ========================= LICENSING & COPYRIGHT ======================== */ +/* ======================================================================== */ +/* + * MUSASHI + * Version 3.32 + * + * A portable Motorola M680x0 processor emulation engine. + * Copyright Karl Stenerud. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#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_OFF +#define M68K_EMULATE_EC020 OPT_OFF +#define M68K_EMULATE_020 OPT_OFF +#define M68K_EMULATE_030 OPT_OFF +#define M68K_EMULATE_040 OPT_OFF + + +/* 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) m68k_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() m68k_reset_callback() + +/* If ON, CPU will call the callback when it encounters a cmpi.l #v, dn + * instruction. + */ +#define M68K_CMPILD_HAS_CALLBACK OPT_OFF +#define M68K_CMPILD_CALLBACK(v,r) your_cmpild_handler_function(v,r) + + +/* If ON, CPU will call the callback when it encounters a rte + * instruction. + */ +#define M68K_RTE_HAS_CALLBACK OPT_OFF +#define M68K_RTE_CALLBACK() your_rte_handler_function() + +/* If ON, CPU will call the callback when it encounters a tas + * instruction. + */ +#define M68K_TAS_HAS_CALLBACK OPT_OFF +#define M68K_TAS_CALLBACK() your_tas_handler_function() + +/* If ON, CPU will call the callback when it encounters an illegal instruction + * passing the opcode as argument. If the callback returns 1, then it's considered + * as a normal instruction, and the illegal exception in canceled. If it returns 0, + * the exception occurs normally. + * The callback looks like int callback(int opcode) + * You should put OPT_SPECIFY_HANDLER here if you cant to use it, otherwise it will + * use a dummy default handler and you'll have to call m68k_set_illg_instr_callback explicitely + */ +#define M68K_ILLG_HAS_CALLBACK OPT_OFF +#define M68K_ILLG_CALLBACK(opcode) op_illg(opcode) + +/* 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_OFF +#define M68K_SET_FC_CALLBACK(A) your_set_fc_handler_function(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(pc) m68k_instr_callback(pc) + + +/* If ON, the CPU will emulate the 4-byte prefetch queue of a real 68000 */ +#define M68K_EMULATE_PREFETCH OPT_OFF + + +/* 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_OFF + + +/* 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 + +/* Emulate PMMU : if you enable this, there will be a test to see if the current chip has some enabled pmmu added to every memory access, + * so enable this only if it's useful */ +#define M68K_EMULATE_PMMU OPT_ON + +/* ----------------------------- 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_ON + +unsigned int m68k_read_memory_8(unsigned int address); +unsigned int m68k_read_memory_16(unsigned int address); +unsigned int m68k_read_memory_32(unsigned int address); +unsigned int m68k_read_disassembler_16(unsigned int address); +unsigned int m68k_read_disassembler_32(unsigned int address); +void m68k_write_memory_8(unsigned int address, unsigned int value); +void m68k_write_memory_16(unsigned int address, unsigned int value); +void m68k_write_memory_32(unsigned int address, unsigned int value); +void m68k_reset_callback(void); +int m68k_irq_ack(int level); + +void m68k_instr_callback(int pc); + +#endif /* M68K_COMPILE_FOR_MAME */ + +/* ======================================================================== */ +/* ============================== END OF FILE ============================= */ +/* ======================================================================== */ + +#endif /* M68KCONF__HEADER */ |