cpuintrf.h

DC的SEGA_GG模拟器源代码

#ifndef CPUINTRF_H
#define CPUINTRF_H

#include "osd_cpu.h"

/* The old system is obsolete and no longer supported by the core */
#define NEW_INTERRUPT_SYSTEM    1

#define MAX_IRQ_LINES   8       /* maximum number of IRQ lines per CPU */

#define CLEAR_LINE		0		/* clear (a fired, held or pulsed) line */
#define ASSERT_LINE     1       /* assert an interrupt immediately */
#define HOLD_LINE       2       /* hold interrupt line until enable is true */
#define PULSE_LINE		3		/* pulse interrupt line for one instruction */

#define MAX_REGS		64		/* maximum number of register of any CPU */

/* Values passed to the cpu_info function of a core to retrieve information */
enum {
	CPU_INFO_REG,
	CPU_INFO_FLAGS=MAX_REGS,
	CPU_INFO_NAME,
    CPU_INFO_FAMILY,
    CPU_INFO_VERSION,
    CPU_INFO_FILE,
    CPU_INFO_CREDITS,
    CPU_INFO_REG_LAYOUT,
	CPU_INFO_WIN_LAYOUT
};

#define CPU_IS_LE		0	/* emulated CPU is little endian */
#define CPU_IS_BE		1	/* emulated CPU is big endian */

/*
 * This value is passed to cpu_get_reg to retrieve the previous
 * program counter value, ie. before a CPU emulation started
 * to fetch opcodes and arguments for the current instrution.
 */
#define REG_PREVIOUSPC	-1

/*
 * This value is passed to cpu_get_reg/cpu_set_reg, instead of one of
 * the names from the enum a CPU core defines for it's registers,
 * to get or set the contents of the memory pointed to by a stack pointer.
 * You can specify the n'th element on the stack by (REG_SP_CONTENTS-n),
 * ie. lower negative values. The actual element size (UINT16 or UINT32)
 * depends on the CPU core.
 * This is also used to replace the cpu_geturnpc() function.
 */
#define REG_SP_CONTENTS -2

/*
 * These flags can be defined in the makefile (or project) to
 * exclude (zero) or include (non zero) specific CPU cores
 */
#ifndef HAS_GENSYNC
#define HAS_GENSYNC		0
#endif
#ifndef HAS_Z80
#define HAS_Z80 		0
#endif
#ifndef HAS_Z80_VM
#define HAS_Z80_VM		0
#endif
#ifndef HAS_8080
#define HAS_8080		0
#endif
#ifndef HAS_8085A
#define HAS_8085A		0
#endif
#ifndef HAS_M6502
#define HAS_M6502		0
#endif
#ifndef HAS_M65C02
#define HAS_M65C02		0
#endif
#ifndef HAS_M65SC02
#define HAS_M65SC02		0
#endif
#ifndef HAS_M65CE02
#define HAS_M65CE02		0
#endif
#ifndef HAS_M6509
#define HAS_M6509		0
#endif
#ifndef HAS_M6510
#define HAS_M6510		0
#endif
#ifndef HAS_N2A03
#define HAS_N2A03		0
#endif
#ifndef HAS_H6280
#define HAS_H6280		0
#endif
#ifndef HAS_I86
#define HAS_I86 		0
#endif
#ifndef HAS_V20
#define HAS_V20 		0
#endif
#ifndef HAS_V30
#define HAS_V30 		0
#endif
#ifndef HAS_V33
#define HAS_V33 		0
#endif
#ifndef HAS_I8035
#define HAS_I8035		0
#endif
#ifndef HAS_I8039
#define HAS_I8039		0
#endif
#ifndef HAS_I8048
#define HAS_I8048		0
#endif
#ifndef HAS_N7751
#define HAS_N7751		0
#endif
#ifndef HAS_M6800
#define HAS_M6800		0
#endif
#ifndef HAS_M6801
#define HAS_M6801		0
#endif
#ifndef HAS_M6802
#define HAS_M6802		0
#endif
#ifndef HAS_M6803
#define HAS_M6803		0
#endif
#ifndef HAS_M6808
#define HAS_M6808		0
#endif
#ifndef HAS_HD63701
#define HAS_HD63701 	0
#endif
#ifndef HAS_M6805
#define HAS_M6805		0
#endif
#ifndef HAS_M68705
#define HAS_M68705		0
#endif
#ifndef HAS_HD63705
#define HAS_HD63705 	0
#endif
#ifndef HAS_HD6309
#define HAS_HD6309		0
#endif
#ifndef HAS_M6809
#define HAS_M6809		0
#endif
#ifndef HAS_KONAMI
#define HAS_KONAMI		0
#endif
#ifndef HAS_M68000
#define HAS_M68000		0
#endif
#ifndef HAS_M68010
#define HAS_M68010		0
#endif
#ifndef HAS_M68020
#define HAS_M68020		0
#endif
#ifndef HAS_T11
#define HAS_T11 		0
#endif
#ifndef HAS_S2650
#define HAS_S2650		0
#endif
#ifndef HAS_TMS34010
#define HAS_TMS34010	0
#endif
#ifndef HAS_TMS9900
#define HAS_TMS9900 	0
#endif
#ifndef HAS_TMS9940
#define HAS_TMS9940 	0
#endif
#ifndef HAS_TMS9980
#define HAS_TMS9980 	0
#endif
#ifndef HAS_TMS9985
#define HAS_TMS9985 	0
#endif
#ifndef HAS_TMS9989
#define HAS_TMS9989 	0
#endif
#ifndef HAS_TMS9995
#define HAS_TMS9995 	0
#endif
#ifndef HAS_TMS99105A
#define HAS_TMS99105A 	0
#endif
#ifndef HAS_TMS99110A
#define HAS_TMS99110A 	0
#endif
#ifndef HAS_Z8000
#define HAS_Z8000		0
#endif
#ifndef HAS_TMS320C10
#define HAS_TMS320C10	0
#endif
#ifndef HAS_CCPU
#define HAS_CCPU		0
#endif
#ifndef HAS_PDP1
#define HAS_PDP1		0
#endif
#ifndef HAS_ADSP2100
#define HAS_ADSP2100	0
#endif

/* ASG 971222 -- added this generic structure */
struct cpu_interface
{
    unsigned cpu_num;
    void (*reset)(void *param);
    void (*exit)(void);
    int (*execute)(int cycles);
    void (*burn)(int cycles);
    unsigned (*get_context)(void *reg);
    void (*set_context)(void *reg);
    unsigned (*get_pc)(void);
    void (*set_pc)(unsigned val);
    unsigned (*get_sp)(void);
    void (*set_sp)(unsigned val);
    unsigned (*get_reg)(int regnum);
    void (*set_reg)(int regnum, unsigned val);
    void (*set_nmi_line)(int linestate);
    void (*set_irq_line)(int irqline, int linestate);
    void (*set_irq_callback)(int(*callback)(int irqline));
    void (*internal_interrupt)(int type);
    void (*cpu_state_save)(void *file);
    void (*cpu_state_load)(void *file);
    const char* (*cpu_info)(void *context,int regnum);
    unsigned (*cpu_dasm)(char *buffer,unsigned pc);
	unsigned num_irqs;
	int default_vector;
    int *icount;
    double overclock;
    int no_int, irq_int, nmi_int;
    int (*memory_read)(int offset);
    void (*memory_write)(int offset, int data);
    void (*set_op_base)(int pc);
	int address_shift;
	unsigned address_bits, endianess, align_unit, max_inst_len;
    unsigned abits1, abits2, abitsmin;
};

extern struct cpu_interface cpuintf[];

void cpu_init(void);
void cpu_run(void);

/* optional watchdog */
void watchdog_reset_w(int offset,int data);
int watchdog_reset_r(int offset);
/* Use this function to reset the machine */
void machine_reset(void);
/* Use this function to reset a single CPU */
void cpu_set_reset_line(int cpu,int state);
/* Use this function to halt a single CPU */
void cpu_set_halt_line(int cpu,int state);

/* This function returns CPUNUM current status (running or halted) */
int cpu_getstatus(int cpunum);
int cpu_gettotalcpu(void);
int cpu_getactivecpu(void);
void cpu_setactivecpu(int cpunum);

/* Returns the current program counter */
unsigned cpu_get_pc(void);
/* Set the current program counter */