/*
  * UAE - The Un*x Amiga Emulator
  *
  * MC68000 emulation
  *
  * Copyright 1995 Bernd Schmidt
  */

#ifndef UAE_NEWCPU_H
#define UAE_NEWCPU_H

#include "uae/types.h"
#include "readcpu.h"
#include "machdep/m68k.h"

extern const int areg_byteinc[];
extern const int imm8_table[];

extern int movem_index1[256];
extern int movem_index2[256];
extern int movem_next[256];

typedef uae_u32 REGPARAM3 cpuop_func(uae_u32) REGPARAM;
typedef void REGPARAM3 cpuop_func_ce(uae_u32) REGPARAM;

struct cputbl
{
	cpuop_func* handler;
	uae_u16 opcode;
	uae_s8 length;
	uae_s8 disp020[2];
	uae_u8 branch;
};

#ifdef JIT
#define MIN_JIT_CACHE 128
#define MAX_JIT_CACHE 16384
typedef uae_u32 REGPARAM3 compop_func(uae_u32) REGPARAM;

#define COMP_OPCODE_ISJUMP      0x0001
#define COMP_OPCODE_LONG_OPCODE 0x0002
#define COMP_OPCODE_CMOV        0x0004
#define COMP_OPCODE_ISADDX      0x0008
#define COMP_OPCODE_ISCJUMP     0x0010
#define COMP_OPCODE_USES_FPU    0x0020

struct comptbl
{
	compop_func* handler;
	uae_u32 specific;
	uae_u32 opcode;
};
#else
#define MIN_JIT_CACHE 0
#define MAX_JIT_CACHE 0
#endif

extern uae_u32 REGPARAM3 op_illg(uae_u32) REGPARAM;

typedef uae_u8 flagtype;

#ifdef FPUEMU

typedef double fptype;
#endif

struct mmufixup
{
	int reg;
	uae_u32 value;
};

extern struct mmufixup mmufixup[1];

typedef struct
{
	fptype fp;
} fpdata;

#ifdef JIT
#include "jit/comptbl.h"
#include "jit/compemu.h"
#endif

struct regstruct
{
	uae_u32 regs[16];
	struct flag_struct ccrflags;

	uae_u32 pc;
	uae_u8* pc_p;
	uae_u8* pc_oldp;
	uae_u16 opcode;
	uae_u32 instruction_pc;

	uae_u16 irc, ir, db;
	volatile uae_atomic spcflags;

	uaecptr usp, isp, msp;
	uae_u16 sr;
	flagtype t1;
	flagtype t0;
	flagtype s;
	flagtype m;
	flagtype x;
	flagtype stopped;
	int halted;
	int intmask;

	uae_u32 vbr, sfc, dfc;

#ifdef FPUEMU
	fpdata fp[8];
#ifdef JIT
	fpdata fp_result;
#endif
	uae_u32 fpcr, fpsr, fpiar;
	uae_u32 fpu_state;
	uae_u32 fpu_exp_state;
	uaecptr fp_ea;
	uae_u32 fp_exp_pend, fp_unimp_pend;
	bool fpu_exp_pre;
	bool fp_unimp_ins;
	bool fp_exception;
	bool fp_branch;
#endif
	uae_u32 cacr, caar;
	uae_u32 itt0, itt1, dtt0, dtt1;
	uae_u32 tcr, mmusr, urp, srp, buscr;

	uae_u32 pcr;
	uae_u32 address_space_mask;

	uae_s32 pissoff;
	uae_u8* natmem_offset;

#ifdef JIT
	/* store scratch regs also in this struct to avoid load of mem pointer */
	uae_u32 scratchregs[VREGS - S1];
	fpu_register scratchfregs[VFREGS - 8];
	uae_u32 jit_exception;

	/* pointer to real arrays/structs for easier access in JIT */
	uae_u32* raw_cputbl_count;
	uintptr mem_banks;
	uintptr cache_tags;
#endif
};

extern struct regstruct regs;

#define REGS_DEFINED
#include "machdep/m68k.h"
#include "events.h"

STATIC_INLINE uae_u32 munge24(uae_u32 x)
{
	return x & regs.address_space_mask;
}

extern int cpu_cycles;
extern int m68k_pc_indirect;

STATIC_INLINE void set_special_exter(uae_u32 x)
{
	atomic_or(&regs.spcflags, x);
}

STATIC_INLINE void set_special(uae_u32 x)
{
	atomic_or(&regs.spcflags, x);
	cycles_do_special();
}

STATIC_INLINE void unset_special(uae_u32 x)
{
	atomic_and(&regs.spcflags, ~x);
}

#define m68k_dreg(r,num) ((r).regs[(num)])
#define m68k_areg(r,num) (((r).regs + 8)[(num)])

extern uae_u32 (*x_get_byte)(uaecptr addr);
extern uae_u32 (*x_get_word)(uaecptr addr);
extern uae_u32 (*x_get_long)(uaecptr addr);
extern void (*x_put_byte)(uaecptr addr, uae_u32 v);
extern void (*x_put_word)(uaecptr addr, uae_u32 v);
extern void (*x_put_long)(uaecptr addr, uae_u32 v);

#define x_cp_get_byte x_get_byte
#define x_cp_get_word x_get_word
#define x_cp_get_long x_get_long
#define x_cp_put_byte x_put_byte
#define x_cp_put_word x_put_word
#define x_cp_put_long x_put_long
#define x_cp_next_iword() next_diword()
#define x_cp_next_ilong() next_dilong()

#define x_cp_get_disp_ea_020(base,idx) _get_disp_ea_020(base)

/* direct (regs.pc_p) access */

STATIC_INLINE void m68k_setpc(uaecptr newpc)
{
	regs.pc_p = regs.pc_oldp = get_real_address(newpc);
	regs.instruction_pc = regs.pc = newpc;
}

STATIC_INLINE void m68k_setpc_j(uaecptr newpc)
{
	regs.pc_p = regs.pc_oldp = get_real_address(newpc);
	regs.pc = newpc;
}

STATIC_INLINE uaecptr m68k_getpc(void)
{
	return static_cast<uaecptr>(regs.pc + (static_cast<uae_u8*>(regs.pc_p) - static_cast<uae_u8*>(regs.pc_oldp)));
}

#define M68K_GETPC m68k_getpc()
STATIC_INLINE void m68k_incpc(int o)
{
	regs.pc_p += o;
}

STATIC_INLINE uae_u32 get_dibyte(int o)
{
	return do_get_mem_byte(static_cast<uae_u8*>((regs).pc_p + (o) + 1));
}

STATIC_INLINE uae_u32 get_diword(int o)
{
	return do_get_mem_word((uae_u16*)((regs).pc_p + (o)));
}

STATIC_INLINE uae_u32 get_dilong(int o)
{
	return do_get_mem_long((uae_u32*)((regs).pc_p + (o)));
}

STATIC_INLINE uae_u32 next_diword(void)
{
	uae_u32 r = do_get_mem_word((uae_u16*)((regs).pc_p));
	m68k_incpc(2);
	return r;
}

STATIC_INLINE uae_u32 next_dilong(void)
{
	uae_u32 r = do_get_mem_long((uae_u32*)((regs).pc_p));
	m68k_incpc(4);
	return r;
}

STATIC_INLINE void m68k_do_bsr(uaecptr oldpc, uae_s32 offset)
{
	m68k_areg(regs, 7) -= 4;
	put_long(m68k_areg(regs, 7), oldpc);
	m68k_incpc(offset);
}

STATIC_INLINE void m68k_do_rts(void)
{
	uae_u32 newpc = get_long(m68k_areg(regs, 7));
	m68k_setpc(newpc);
	m68k_areg(regs, 7) += 4;
}

/* indirect (regs.pc) access */

STATIC_INLINE void m68k_setpci(uaecptr newpc)
{
	regs.instruction_pc = regs.pc = newpc;
}

STATIC_INLINE void m68k_setpci_j(uaecptr newpc)
{
	regs.pc = newpc;
}

STATIC_INLINE uaecptr m68k_getpci(void)
{
	return regs.pc;
}

STATIC_INLINE void m68k_incpci(int o)
{
	regs.pc += o;
}

STATIC_INLINE void m68k_do_bsri(uaecptr oldpc, uae_s32 offset)
{
	m68k_areg(regs, 7) -= 4;
	x_put_long(m68k_areg(regs, 7), oldpc);
	m68k_incpci(offset);
}

STATIC_INLINE void m68k_do_rtsi(void)
{
	uae_u32 newpc = x_get_long(m68k_areg(regs, 7));
	m68k_setpci(newpc);
	m68k_areg(regs, 7) += 4;
}

/* common access */

STATIC_INLINE void m68k_incpc_normal(int o)
{
	if (m68k_pc_indirect > 0)
		m68k_incpci(o);
	else
		m68k_incpc(o);
}

STATIC_INLINE void m68k_setpc_normal(uaecptr pc)
{
	if (m68k_pc_indirect > 0)
	{
		regs.pc_p = regs.pc_oldp = nullptr;
		m68k_setpci(pc);
	}
	else
	{
		m68k_setpc(pc);
	}
}

extern void check_t0_trace(void);

#define x_do_cycles(c) do_cycles(c)

extern void m68k_setstopped(void);
extern void m68k_resumestopped(void);
extern void m68k_cancel_idle(void);

#define get_disp_ea_020(base,idx) _get_disp_ea_020(base)
extern uae_u32 REGPARAM3 _get_disp_ea_020(uae_u32 base) REGPARAM;

extern uae_u32 REGPARAM3 get_bitfield(uae_u32 src, uae_u32 bdata[2], uae_s32 offset, int width) REGPARAM;
extern void REGPARAM3 put_bitfield(uae_u32 dst, uae_u32 bdata[2], uae_u32 val, uae_s32 offset, int width) REGPARAM;
extern int get_cpu_model(void);

extern void set_cpu_caches(bool flush);
extern void flush_cpu_caches_040(uae_u16 opcode);
extern void REGPARAM3 MakeSR(void) REGPARAM;
extern void REGPARAM3 MakeFromSR(void) REGPARAM;
extern void REGPARAM3 MakeFromSR_T0(void) REGPARAM;
extern void REGPARAM3 Exception(int) REGPARAM;
extern void REGPARAM3 Exception_cpu(int) REGPARAM;
extern void NMI(void);
extern void doint(void);
extern void dump_counts(void);
extern int m68k_move2c(int, uae_u32*);
extern int m68k_movec2(int, uae_u32*);
extern void m68k_divl(uae_u32, uae_u32, uae_u16);
extern void m68k_mull(uae_u32, uae_u32, uae_u16);
extern void init_m68k(void);
extern void m68k_go(int);
extern int getDivu68kCycles(uae_u32 dividend, uae_u16 divisor);
extern int getDivs68kCycles(uae_s32 dividend, uae_s16 divisor);
extern void divbyzero_special(bool issigned, uae_s32 dst);
extern void setdivuoverflowflags(uae_u32 dividend, uae_u16 divisor);
extern void setdivsoverflowflags(uae_s32 dividend, uae_s16 divisor);
extern void setchkundefinedflags(uae_s32 src, uae_s32 dst, int size);
extern void setchk2undefinedflags(uae_u32 lower, uae_u32 upper, uae_u32 val, int size);
extern void protect_roms(bool);
extern void Exception_build_stack_frame_common(uae_u32 oldpc, uae_u32 currpc, int nr);
extern void Exception_build_stack_frame(uae_u32 oldpc, uae_u32 currpc, uae_u32 ssw, int nr, int format);
extern void Exception_build_68000_address_error_stack_frame(uae_u16 mode, uae_u16 opcode, uaecptr fault_addr,
                                                            uaecptr pc);
extern uae_u32 exception_pc(int nr);

void ccr_68000_long_move_ae_LZN(uae_s32 src);
void ccr_68000_long_move_ae_LN(uae_s32 src);
void ccr_68000_long_move_ae_HNZ(uae_s32 src);
void ccr_68000_long_move_ae_normal(uae_s32 src);
void ccr_68000_word_move_ae_normal(uae_s16 src);

STATIC_INLINE int bitset_count16(uae_u16 data)
{
	unsigned int const MASK1 = 0x5555;
	unsigned int const MASK2 = 0x3333;
	unsigned int const MASK4 = 0x0f0f;
	unsigned int const MASK6 = 0x003f;

	unsigned int const w = (data & MASK1) + ((data >> 1) & MASK1);
	unsigned int const x = (w & MASK2) + ((w >> 2) & MASK2);
	unsigned int const y = ((x + (x >> 4)) & MASK4);
	unsigned int const z = (y + (y >> 8)) & MASK6;

	return z;
}

extern void mmu_op(uae_u32, uae_u32);
extern bool mmu_op30(uaecptr, uae_u32, uae_u16, uaecptr);

extern void fpuop_arithmetic(uae_u32, uae_u16);
extern void fpuop_dbcc(uae_u32, uae_u16);
extern void fpuop_scc(uae_u32, uae_u16);
extern void fpuop_trapcc(uae_u32, uaecptr, uae_u16);
extern void fpuop_bcc(uae_u32, uaecptr, uae_u32);
extern void fpuop_save(uae_u32);
extern void fpuop_restore(uae_u32);
extern void fpu_reset(void);

extern void exception3_read(uae_u32 opcode, uaecptr addr);
extern void exception3_write(uae_u32 opcode, uaecptr addr);
extern void exception3i(uae_u32 opcode, uaecptr addr);
extern void exception3b(uae_u32 opcode, uaecptr addr, bool w, bool i, uaecptr pc);
extern void exception2(uaecptr addr, bool read, int size, uae_u32 fc);
extern void cpureset(void);
extern void cpu_halt(int id);
extern int cpu_sleep_millis(int ms);

extern void fill_prefetch(void);

#define CPU_OP_NAME(a) op ## a

/* 68040 */
extern const struct cputbl op_smalltbl_1_ff[];
extern const struct cputbl op_smalltbl_41_ff[];
/* 68030 */
extern const struct cputbl op_smalltbl_2_ff[];
extern const struct cputbl op_smalltbl_42_ff[];
/* 68020 */
extern const struct cputbl op_smalltbl_3_ff[];
extern const struct cputbl op_smalltbl_43_ff[];
/* 68010 */
extern const struct cputbl op_smalltbl_4_ff[];
extern const struct cputbl op_smalltbl_44_ff[];
extern const struct cputbl op_smalltbl_11_ff[]; // prefetch
/* 68000 */
extern const struct cputbl op_smalltbl_5_ff[];
extern const struct cputbl op_smalltbl_45_ff[];
extern const struct cputbl op_smalltbl_12_ff[]; // prefetch

extern cpuop_func* cpufunctbl[65536] ASM_SYM_FOR_FUNC("cpufunctbl");

#ifdef JIT
extern void flush_icache(int);
extern void flush_icache_hard(int);
extern void compemu_reset(void);
#else
#define flush_icache(int) do {} while (0)
#define flush_icache_hard(int) do {} while (0)
#endif
bool check_prefs_changed_comp(bool);

#define CPU_HALT_BUS_ERROR_DOUBLE_FAULT 1
#define CPU_HALT_DOUBLE_FAULT 2
#define CPU_HALT_OPCODE_FETCH_FROM_NON_EXISTING_ADDRESS 3
#define CPU_HALT_AUTOCONFIG_CONFLICT 7
#define CPU_HALT_SSP_IN_NON_EXISTING_ADDRESS 10
#define CPU_HALT_INVALID_START_ADDRESS 11

#endif /* UAE_NEWCPU_H */