some poor timing improvement attempts

[picodrive.git] / pico / pico_int.h

/*\r
 * PicoDrive - Internal Header File\r
 * (c) Copyright Dave, 2004\r
 * (C) notaz, 2006-2010\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#ifndef PICO_INTERNAL_INCLUDED\r
#define PICO_INTERNAL_INCLUDED\r
\r
#include <stdio.h>\r
#include <stdlib.h>\r
#include <string.h>\r
#include "pico.h"\r
#include "carthw/carthw.h"\r
\r
//\r
#define USE_POLL_DETECT\r
\r
#ifndef PICO_INTERNAL\r
#define PICO_INTERNAL\r
#endif\r
#ifndef PICO_INTERNAL_ASM\r
#define PICO_INTERNAL_ASM\r
#endif\r
\r
// to select core, define EMU_C68K, EMU_M68K or EMU_F68K in your makefile or project\r
\r
#ifdef __cplusplus\r
extern "C" {\r
#endif\r
\r
\r
// ----------------------- 68000 CPU -----------------------\r
#ifdef EMU_C68K\r
#include "../cpu/cyclone/Cyclone.h"\r
extern struct Cyclone PicoCpuCM68k, PicoCpuCS68k;\r
#define SekCyclesLeft     PicoCpuCM68k.cycles // cycles left for this run\r
#define SekCyclesLeftS68k PicoCpuCS68k.cycles\r
#define SekPc (PicoCpuCM68k.pc-PicoCpuCM68k.membase)\r
#define SekPcS68k (PicoCpuCS68k.pc-PicoCpuCS68k.membase)\r
#define SekDar(x)     (x < 8 ? PicoCpuCM68k.d[x] : PicoCpuCM68k.a[x - 8])\r
#define SekDarS68k(x) (x < 8 ? PicoCpuCS68k.d[x] : PicoCpuCS68k.a[x - 8])\r
#define SekSr     CycloneGetSr(&PicoCpuCM68k)\r
#define SekSrS68k CycloneGetSr(&PicoCpuCS68k)\r
#define SekSetStop(x) { PicoCpuCM68k.state_flags&=~1; if (x) { PicoCpuCM68k.state_flags|=1; PicoCpuCM68k.cycles=0; } }\r
#define SekSetStopS68k(x) { PicoCpuCS68k.state_flags&=~1; if (x) { PicoCpuCS68k.state_flags|=1; PicoCpuCS68k.cycles=0; } }\r
#define SekIsStoppedM68k() (PicoCpuCM68k.state_flags&1)\r
#define SekIsStoppedS68k() (PicoCpuCS68k.state_flags&1)\r
#define SekShouldInterrupt() (PicoCpuCM68k.irq > (PicoCpuCM68k.srh&7))\r
\r
#define SekNotPolling     PicoCpuCM68k.not_pol\r
#define SekNotPollingS68k PicoCpuCS68k.not_pol\r
\r
#define SekInterrupt(i) PicoCpuCM68k.irq=i\r
#define SekIrqLevel     PicoCpuCM68k.irq\r
\r
#endif\r
\r
#ifdef EMU_F68K\r
#include "../cpu/fame/fame.h"\r
extern M68K_CONTEXT PicoCpuFM68k, PicoCpuFS68k;\r
#define SekCyclesLeft     PicoCpuFM68k.io_cycle_counter\r
#define SekCyclesLeftS68k PicoCpuFS68k.io_cycle_counter\r
#define SekPc     fm68k_get_pc(&PicoCpuFM68k)\r
#define SekPcS68k fm68k_get_pc(&PicoCpuFS68k)\r
#define SekDar(x)     (x < 8 ? PicoCpuFM68k.dreg[x].D : PicoCpuFM68k.areg[x - 8].D)\r
#define SekDarS68k(x) (x < 8 ? PicoCpuFS68k.dreg[x].D : PicoCpuFS68k.areg[x - 8].D)\r
#define SekSr     PicoCpuFM68k.sr\r
#define SekSrS68k PicoCpuFS68k.sr\r
#define SekSetStop(x) { \\r
	PicoCpuFM68k.execinfo &= ~FM68K_HALTED; \\r
	if (x) { PicoCpuFM68k.execinfo |= FM68K_HALTED; PicoCpuFM68k.io_cycle_counter = 0; } \\r
}\r
#define SekSetStopS68k(x) { \\r
	PicoCpuFS68k.execinfo &= ~FM68K_HALTED; \\r
	if (x) { PicoCpuFS68k.execinfo |= FM68K_HALTED; PicoCpuFS68k.io_cycle_counter = 0; } \\r
}\r
#define SekIsStoppedM68k() (PicoCpuFM68k.execinfo&FM68K_HALTED)\r
#define SekIsStoppedS68k() (PicoCpuFS68k.execinfo&FM68K_HALTED)\r
#define SekShouldInterrupt() fm68k_would_interrupt()\r
\r
#define SekNotPolling     PicoCpuFM68k.not_polling\r
#define SekNotPollingS68k PicoCpuFS68k.not_polling\r
\r
#define SekInterrupt(irq) PicoCpuFM68k.interrupts[0]=irq\r
#define SekIrqLevel       PicoCpuFM68k.interrupts[0]\r
\r
#endif\r
\r
#ifdef EMU_M68K\r
#include "../cpu/musashi/m68kcpu.h"\r
extern m68ki_cpu_core PicoCpuMM68k, PicoCpuMS68k;\r
#ifndef SekCyclesLeft\r
#define SekCyclesLeft     PicoCpuMM68k.cyc_remaining_cycles\r
#define SekCyclesLeftS68k PicoCpuMS68k.cyc_remaining_cycles\r
#define SekPc m68k_get_reg(&PicoCpuMM68k, M68K_REG_PC)\r
#define SekPcS68k m68k_get_reg(&PicoCpuMS68k, M68K_REG_PC)\r
#define SekDar(x)     PicoCpuMM68k.dar[x]\r
#define SekDarS68k(x) PicoCpuMS68k.dar[x]\r
#define SekSr     m68k_get_reg(&PicoCpuMM68k, M68K_REG_SR)\r
#define SekSrS68k m68k_get_reg(&PicoCpuMS68k, M68K_REG_SR)\r
#define SekSetStop(x) { \\r
	if(x) { SET_CYCLES(0); PicoCpuMM68k.stopped=STOP_LEVEL_STOP; } \\r
	else PicoCpuMM68k.stopped=0; \\r
}\r
#define SekSetStopS68k(x) { \\r
	if(x) { SET_CYCLES(0); PicoCpuMS68k.stopped=STOP_LEVEL_STOP; } \\r
	else PicoCpuMS68k.stopped=0; \\r
}\r
#define SekIsStoppedM68k() (PicoCpuMM68k.stopped==STOP_LEVEL_STOP)\r
#define SekIsStoppedS68k() (PicoCpuMS68k.stopped==STOP_LEVEL_STOP)\r
#define SekShouldInterrupt() (CPU_INT_LEVEL > FLAG_INT_MASK)\r
\r
#define SekNotPolling     PicoCpuMM68k.not_polling\r
#define SekNotPollingS68k PicoCpuMS68k.not_polling\r
\r
#define SekInterrupt(irq) { \\r
	void *oldcontext = m68ki_cpu_p; \\r
	m68k_set_context(&PicoCpuMM68k); \\r
	m68k_set_irq(irq); \\r
	m68k_set_context(oldcontext); \\r
}\r
#define SekIrqLevel (PicoCpuMM68k.int_level >> 8)\r
\r
#endif\r
#endif // EMU_M68K\r
\r
// while running, cnt represents target of current timeslice\r
// while not in SekRun(), it's actual cycles done\r
// (but always use SekCyclesDone() if you need current position)\r
// cnt may change if timeslice is ended prematurely or extended,\r
// so we use SekCycleAim for the actual target\r
extern unsigned int SekCycleCnt;\r
extern unsigned int SekCycleAim;\r
\r
// number of cycles done (can be checked anywhere)\r
#define SekCyclesDone()  (SekCycleCnt - SekCyclesLeft)\r
\r
// burn cycles while not in SekRun() and while in\r
#define SekCyclesBurn(c)    SekCycleCnt += c\r
#define SekCyclesBurnRun(c) { \\r
  SekCyclesLeft -= c; \\r
}\r
\r
// note: sometimes may extend timeslice to delay an irq\r
#define SekEndRun(after) { \\r
  SekCycleCnt -= SekCyclesLeft - (after); \\r
  SekCyclesLeft = after; \\r
}\r
\r
extern unsigned int SekCycleCntS68k;\r
extern unsigned int SekCycleAimS68k;\r
\r
#define SekEndRunS68k(after) { \\r
  if (SekCyclesLeftS68k > (after)) { \\r
    SekCycleCntS68k -= SekCyclesLeftS68k - (after); \\r
    SekCyclesLeftS68k = after; \\r
  } \\r
}\r
\r
#define SekCyclesDoneS68k()  (SekCycleCntS68k - SekCyclesLeftS68k)\r
\r
// compare cycles, handling overflows\r
// check if a > b\r
#define CYCLES_GT(a, b) \\r
  ((int)((a) - (b)) > 0)\r
// check if a >= b\r
#define CYCLES_GE(a, b) \\r
  ((int)((a) - (b)) >= 0)\r
\r
// ----------------------- Z80 CPU -----------------------\r
\r
#if defined(_USE_DRZ80)\r
#include "../cpu/DrZ80/drz80.h"\r
\r
extern struct DrZ80 drZ80;\r
\r
#define z80_run(cycles)    ((cycles) - DrZ80Run(&drZ80, cycles))\r
#define z80_run_nr(cycles) DrZ80Run(&drZ80, cycles)\r
#define z80_int()          drZ80.Z80_IRQ = 1\r
#define z80_int()          drZ80.Z80_IRQ = 1\r
#define z80_nmi()          drZ80.Z80IF |= 8\r
\r
#define z80_cyclesLeft     drZ80.cycles\r
#define z80_subCLeft(c)    drZ80.cycles -= c\r
#define z80_pc()           (drZ80.Z80PC - drZ80.Z80PC_BASE)\r
\r
#elif defined(_USE_CZ80)\r
#include "../cpu/cz80/cz80.h"\r
\r
#define z80_run(cycles)    Cz80_Exec(&CZ80, cycles)\r
#define z80_run_nr(cycles) Cz80_Exec(&CZ80, cycles)\r
#define z80_int()          Cz80_Set_IRQ(&CZ80, 0, HOLD_LINE)\r
#define z80_nmi()          Cz80_Set_IRQ(&CZ80, IRQ_LINE_NMI, 0)\r
\r
#define z80_cyclesLeft     (CZ80.ICount - CZ80.ExtraCycles)\r
#define z80_subCLeft(c)    CZ80.ICount -= c\r
#define z80_pc()           Cz80_Get_Reg(&CZ80, CZ80_PC)\r
\r
#else\r
\r
#define z80_run(cycles)    (cycles)\r
#define z80_run_nr(cycles)\r
#define z80_int()\r
#define z80_nmi()\r
\r
#endif\r
\r
#define Z80_STATE_SIZE 0x60\r
\r
extern unsigned int last_z80_sync;\r
extern int z80_cycle_cnt;        /* 'done' z80 cycles before z80_run() */\r
extern int z80_cycle_aim;\r
extern int z80_scanline;\r
extern int z80_scanline_cycles;  /* cycles done until z80_scanline */\r
\r
#define z80_resetCycles() \\r
  last_z80_sync = SekCyclesDone(); \\r
  z80_cycle_cnt = z80_cycle_aim = z80_scanline = z80_scanline_cycles = 0;\r
\r
#define z80_cyclesDone() \\r
  (z80_cycle_aim - z80_cyclesLeft)\r
\r
#define cycles_68k_to_z80(x) ((x)*957 >> 11)\r
\r
// ----------------------- SH2 CPU -----------------------\r
\r
#include "cpu/sh2/sh2.h"\r
\r
extern SH2 sh2s[2];\r
#define msh2 sh2s[0]\r
#define ssh2 sh2s[1]\r
\r
#ifndef DRC_SH2\r
# define sh2_end_run(sh2, after_) do { \\r
  if ((sh2)->icount > (after_)) { \\r
    (sh2)->cycles_timeslice -= (sh2)->icount - (after_); \\r
    (sh2)->icount = after_; \\r
  } \\r
} while (0)\r
# define sh2_cycles_left(sh2) (sh2)->icount\r
# define sh2_burn_cycles(sh2, n) (sh2)->icount -= n\r
# define sh2_pc(sh2) (sh2)->ppc\r
#else\r
# define sh2_end_run(sh2, after_) do { \\r
  int left_ = (signed int)(sh2)->sr >> 12; \\r
  if (left_ > (after_)) { \\r
    (sh2)->cycles_timeslice -= left_ - (after_); \\r
    (sh2)->sr &= 0xfff; \\r
    (sh2)->sr |= (after_) << 12; \\r
  } \\r
} while (0)\r
# define sh2_cycles_left(sh2) ((signed int)(sh2)->sr >> 12)\r
# define sh2_burn_cycles(sh2, n) (sh2)->sr -= ((n) << 12)\r
# define sh2_pc(sh2) (sh2)->pc\r
#endif\r
\r
#define sh2_cycles_done(sh2) ((int)(sh2)->cycles_timeslice - sh2_cycles_left(sh2))\r
#define sh2_cycles_done_t(sh2) \\r
  ((sh2)->m68krcycles_done * 3 + sh2_cycles_done(sh2))\r
#define sh2_cycles_done_m68k(sh2) \\r
  ((sh2)->m68krcycles_done + (sh2_cycles_done(sh2) / 3))\r
\r
#define sh2_reg(c, x) (c) ? ssh2.r[x] : msh2.r[x]\r
#define sh2_gbr(c)    (c) ? ssh2.gbr : msh2.gbr\r
#define sh2_vbr(c)    (c) ? ssh2.vbr : msh2.vbr\r
#define sh2_sr(c)   (((c) ? ssh2.sr : msh2.sr) & 0xfff)\r
\r
#define sh2_set_gbr(c, v) \\r
  { if (c) ssh2.gbr = v; else msh2.gbr = v; }\r
#define sh2_set_vbr(c, v) \\r
  { if (c) ssh2.vbr = v; else msh2.vbr = v; }\r
\r
#define elprintf_sh2(sh2, w, f, ...) \\r
	elprintf(w,"%csh2 "f,(sh2)->is_slave?'s':'m',##__VA_ARGS__)\r
\r
// ---------------------------------------------------------\r
\r
// main oscillator clock which controls timing\r
#define OSC_NTSC 53693100\r
#define OSC_PAL  53203424\r
\r
#define PVD_KILL_A    (1 << 0)\r
#define PVD_KILL_B    (1 << 1)\r
#define PVD_KILL_S_LO (1 << 2)\r
#define PVD_KILL_S_HI (1 << 3)\r
#define PVD_KILL_32X  (1 << 4)\r
#define PVD_FORCE_A   (1 << 5)\r
#define PVD_FORCE_B   (1 << 6)\r
#define PVD_FORCE_S   (1 << 7)\r
\r
struct PicoVideo\r
{\r
  unsigned char reg[0x20];\r
  unsigned int command;       // 32-bit Command\r
  unsigned char pending;      // 1 if waiting for second half of 32-bit command\r
  unsigned char type;         // Command type (v/c/vsram read/write)\r
  unsigned short addr;        // Read/Write address\r
  int status;                 // Status bits\r
  unsigned char pending_ints; // pending interrupts: ??VH????\r
  signed char lwrite_cnt;     // VDP write count during active display line\r
  unsigned short v_counter;   // V-counter\r
  unsigned short debug;       // raw debug register\r
  unsigned char debug_p;      // ... parsed: PVD_*\r
  unsigned char addr_u;\r
  unsigned char pad[0x0c];\r
};\r
\r
struct PicoMisc\r
{\r
  unsigned char rotate;\r
  unsigned char z80Run;\r
  unsigned char padTHPhase[2]; // 02 phase of gamepad TH switches\r
  unsigned short scanline;     // 04 0 to 261||311\r
  char dirtyPal;               // 06 Is the palette dirty (1 - change @ this frame, 2 - some time before)\r
  unsigned char hardware;      // 07 Hardware value for country\r
  unsigned char pal;           // 08 1=PAL 0=NTSC\r
  unsigned char sram_reg;      // 09 SRAM reg. See SRR_* below\r
  unsigned short z80_bank68k;  // 0a\r
  unsigned short pad0;\r
  unsigned char  ncart_in;     // 0e !cart_in\r
  unsigned char  z80_reset;    // 0f z80 reset held\r
  unsigned char  padDelay[2];  // 10 gamepad phase time outs, so we count a delay\r
  unsigned short eeprom_addr;  // EEPROM address register\r
  unsigned char  eeprom_cycle; // EEPROM cycle number\r
  unsigned char  eeprom_slave; // EEPROM slave word for X24C02 and better SRAMs\r
  unsigned char  eeprom_status;\r
  unsigned char  pad2;\r
  unsigned short dma_xfers;    // 18\r
  unsigned char  eeprom_wb[2]; // EEPROM latch/write buffer\r
  unsigned int  frame_count;   // 1c for movies and idle det\r
};\r
\r
struct PicoMS\r
{\r
  unsigned char carthw[0x10];\r
  unsigned char io_ctl;\r
  unsigned char nmi_state;\r
  unsigned char pad[0x4e];\r
};\r
\r
// emu state and data for the asm code\r
struct PicoEState\r
{\r
  int DrawScanline;\r
  int rendstatus;\r
  void *DrawLineDest;          // draw destination\r
  unsigned char *HighCol;\r
  int *HighPreSpr;\r
  void *Pico_video;\r
  void *Pico_vram;\r
  int  *PicoOpt;\r
  unsigned char *Draw2FB;\r
  unsigned short HighPal[0x100];\r
};\r
\r
// some assembly stuff depend on these, do not touch!\r
struct Pico\r
{\r
  unsigned char ram[0x10000];  // 0x00000 scratch ram\r
  union {                      // vram is byteswapped for easier reads when drawing\r
    unsigned short vram[0x8000];  // 0x10000\r
    unsigned char  vramb[0x4000]; // VRAM in SMS mode\r
  };\r
  unsigned char zram[0x2000];  // 0x20000 Z80 ram\r
  unsigned char ioports[0x10]; // XXX: fix asm and mv\r
  unsigned char pad[0xf0];     // unused\r
  unsigned short cram[0x40];   // 0x22100\r
  unsigned short vsram[0x40];  // 0x22180\r
\r
  unsigned char *rom;          // 0x22200\r
  unsigned int romsize;        // 0x22204 (on 32bits)\r
\r
  struct PicoMisc m;\r
  struct PicoVideo video;\r
  struct PicoMS ms;\r
  struct PicoEState est;\r
};\r
\r
// sram\r
#define SRR_MAPPED   (1 << 0)\r
#define SRR_READONLY (1 << 1)\r
\r
#define SRF_ENABLED  (1 << 0)\r
#define SRF_EEPROM   (1 << 1)\r
\r
struct PicoSRAM\r
{\r
  unsigned char *data;		// actual data\r
  unsigned int start;		// start address in 68k address space\r
  unsigned int end;\r
  unsigned char flags;		// 0c: SRF_*\r
  unsigned char unused2;\r
  unsigned char changed;\r
  unsigned char eeprom_type;    // eeprom type: 0: 7bit (24C01), 2: 2 addr words (X24C02+), 3: 3 addr words\r
  unsigned char unused3;\r
  unsigned char eeprom_bit_cl;	// bit number for cl\r
  unsigned char eeprom_bit_in;  // bit number for in\r
  unsigned char eeprom_bit_out; // bit number for out\r
  unsigned int size;\r
};\r
\r
// MCD\r
#define PCM_MIXBUF_LEN ((12500000 / 384) / 50 + 1)\r
\r
struct mcd_pcm\r
{\r
	unsigned char control; // reg7\r
	unsigned char enabled; // reg8\r
	unsigned char cur_ch;\r
	unsigned char bank;\r
	unsigned int update_cycles;\r
\r
	struct pcm_chan			// 08, size 0x10\r
	{\r
		unsigned char regs[8];\r
		unsigned int  addr;	// .08: played sample address\r
		int pad;\r
	} ch[8];\r
};\r
\r
#define PCD_ST_S68K_RST 1\r
\r
struct mcd_misc\r
{\r
  unsigned short hint_vector;\r
  unsigned char  busreq;          // not s68k_regs[1]\r
  unsigned char  s68k_pend_ints;\r
  unsigned int   state_flags;     // 04\r
  unsigned int   stopwatch_base_c;\r
  unsigned short m68k_poll_a;\r
  unsigned short m68k_poll_cnt;\r
  unsigned short s68k_poll_a;\r
  unsigned short s68k_poll_cnt;\r
  unsigned int   s68k_poll_clk;\r
  unsigned char  bcram_reg;       // 18: battery-backed RAM cart register\r
  unsigned char  dmna_ret_2m;\r
  unsigned char  need_sync;\r
  unsigned char  pad3;\r
  int pad4[9];\r
};\r
\r
typedef struct\r
{\r
  unsigned char bios[0x20000];			// 000000: 128K\r
  union {					// 020000: 512K\r
    unsigned char prg_ram[0x80000];\r
    unsigned char prg_ram_b[4][0x20000];\r
  };\r
  union {					// 0a0000: 256K\r
    struct {\r
      unsigned char word_ram2M[0x40000];\r
      unsigned char unused0[0x20000];\r
    };\r
    struct {\r
      unsigned char unused1[0x20000];\r
      unsigned char word_ram1M[2][0x20000];\r
    };\r
  };\r
  union {					// 100000: 64K\r
    unsigned char pcm_ram[0x10000];\r
    unsigned char pcm_ram_b[0x10][0x1000];\r
  };\r
  unsigned char s68k_regs[0x200];		// 110000: GA, not CPU regs\r
  unsigned char bram[0x2000];			// 110200: 8K\r
  struct mcd_misc m;				// 112200: misc\r
  struct mcd_pcm pcm;				// 112240:\r
  void *cdda_stream;\r
  int cdda_type;\r
  int pcm_mixbuf[PCM_MIXBUF_LEN * 2];\r
  int pcm_mixpos;\r
  char pcm_mixbuf_dirty;\r
  char pcm_regs_dirty;\r
} mcd_state;\r
\r
// XXX: this will need to be reworked for cart+cd support.\r
#define Pico_mcd ((mcd_state *)Pico.rom)\r
\r
// 32X\r
#define P32XS_FM    (1<<15)\r
#define P32XS_nCART (1<< 8)\r
#define P32XS_REN   (1<< 7)\r
#define P32XS_nRES  (1<< 1)\r
#define P32XS_ADEN  (1<< 0)\r
#define P32XS2_ADEN (1<< 9)\r
#define P32XS_FULL  (1<< 7) // DREQ FIFO full\r
#define P32XS_68S   (1<< 2)\r
#define P32XS_DMA   (1<< 1)\r
#define P32XS_RV    (1<< 0)\r
\r
#define P32XV_nPAL  (1<<15) // VDP\r
#define P32XV_PRI   (1<< 7)\r
#define P32XV_Mx    (3<< 0) // display mode mask\r
\r
#define P32XV_SFT   (1<< 0)\r
\r
#define P32XV_VBLK  (1<<15)\r
#define P32XV_HBLK  (1<<14)\r
#define P32XV_PEN   (1<<13)\r
#define P32XV_nFEN  (1<< 1)\r
#define P32XV_FS    (1<< 0)\r
\r
#define P32XP_RTP   (1<<7)  // PWM control\r
#define P32XP_FULL  (1<<15) // PWM pulse\r
#define P32XP_EMPTY (1<<14)\r
\r
#define P32XF_68KCPOLL   (1 << 0)\r
#define P32XF_68KVPOLL   (1 << 1)\r
#define P32XF_Z80_32X_IO (1 << 7) // z80 does 32x io\r
\r
#define P32XI_VRES (1 << 14/2) // IRL/2\r
#define P32XI_VINT (1 << 12/2)\r
#define P32XI_HINT (1 << 10/2)\r
#define P32XI_CMD  (1 <<  8/2)\r
#define P32XI_PWM  (1 <<  6/2)\r
\r
// peripheral reg access\r
#define PREG8(regs,offs) ((unsigned char *)regs)[offs ^ 3]\r
\r
#define DMAC_FIFO_LEN (4*2)\r
#define PWM_BUFF_LEN 1024 // in one channel samples\r
\r
#define SH2_DRCBLK_RAM_SHIFT 1\r
#define SH2_DRCBLK_DA_SHIFT  1\r
\r
#define SH2_READ_SHIFT 25\r
#define SH2_WRITE_SHIFT 25\r
\r
struct Pico32x\r
{\r
  unsigned short regs[0x20];\r
  unsigned short vdp_regs[0x10]; // 0x40\r
  unsigned short sh2_regs[3];    // 0x60\r
  unsigned char pending_fb;\r
  unsigned char dirty_pal;\r
  unsigned int emu_flags;\r
  unsigned char sh2irq_mask[2];\r
  unsigned char sh2irqi[2];      // individual\r
  unsigned int sh2irqs;          // common irqs\r
  unsigned short dmac_fifo[DMAC_FIFO_LEN];\r
  unsigned int pad[4];\r
  unsigned int dmac0_fifo_ptr;\r
  unsigned short vdp_fbcr_fake;\r
  unsigned short pad2;\r
  unsigned char comm_dirty_68k;\r
  unsigned char comm_dirty_sh2;\r
  unsigned char pwm_irq_cnt;\r
  unsigned char pad1;\r
  unsigned short pwm_p[2];       // pwm pos in fifo\r
  unsigned int pwm_cycle_p;      // pwm play cursor (32x cycles)\r
  unsigned int reserved[6];\r
};\r
\r
struct Pico32xMem\r
{\r
  unsigned char  sdram[0x40000];\r
#ifdef DRC_SH2\r
  unsigned short drcblk_ram[1 << (18 - SH2_DRCBLK_RAM_SHIFT)];\r
#endif\r
  unsigned short dram[2][0x20000/2];    // AKA fb\r
  union {\r
    unsigned char  m68k_rom[0x100];\r
    unsigned char  m68k_rom_bank[0x10000]; // M68K_BANK_SIZE\r
  };\r
#ifdef DRC_SH2\r
  unsigned short drcblk_da[2][1 << (12 - SH2_DRCBLK_DA_SHIFT)];\r
#endif\r
  union {\r
    unsigned char  b[0x800];\r
    unsigned short w[0x800/2];\r
  } sh2_rom_m;\r
  union {\r
    unsigned char  b[0x400];\r
    unsigned short w[0x400/2];\r
  } sh2_rom_s;\r
  unsigned short pal[0x100];\r
  unsigned short pal_native[0x100];     // converted to native (for renderer)\r
  signed short   pwm[2*PWM_BUFF_LEN];   // PWM buffer for current frame\r
  signed short   pwm_current[2];        // current converted samples\r
  unsigned short pwm_fifo[2][4];        // [0] - current raw, others - fifo entries\r
};\r
\r
// area.c\r
extern void (*PicoLoadStateHook)(void);\r
\r
typedef struct {\r
	int chunk;\r
	int size;\r
	void *ptr;\r
} carthw_state_chunk;\r
extern carthw_state_chunk *carthw_chunks;\r
#define CHUNK_CARTHW 64\r
\r
// cart.c\r
extern int PicoCartResize(int newsize);\r
extern void Byteswap(void *dst, const void *src, int len);\r
extern void (*PicoCartMemSetup)(void);\r
extern void (*PicoCartUnloadHook)(void);\r
\r
// debug.c\r
int CM_compareRun(int cyc, int is_sub);\r
\r
// draw.c\r
void PicoDrawInit(void);\r
PICO_INTERNAL void PicoFrameStart(void);\r
void PicoDrawSync(int to, int blank_last_line);\r
void BackFill(int reg7, int sh, struct PicoEState *est);\r
void FinalizeLine555(int sh, int line, struct PicoEState *est);\r
extern int (*PicoScanBegin)(unsigned int num);\r
extern int (*PicoScanEnd)(unsigned int num);\r
#define MAX_LINE_SPRITES 29\r
extern unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES];\r
extern void *DrawLineDestBase;\r
extern int DrawLineDestIncrement;\r
\r
// draw2.c\r
void PicoDraw2Init(void);\r
PICO_INTERNAL void PicoFrameFull();\r
\r
// mode4.c\r
void PicoFrameStartMode4(void);\r
void PicoLineMode4(int line);\r
void PicoDoHighPal555M4(void);\r
void PicoDrawSetOutputMode4(pdso_t which);\r
\r
// memory.c\r
PICO_INTERNAL void PicoMemSetup(void);\r
unsigned int PicoRead8_io(unsigned int a);\r
unsigned int PicoRead16_io(unsigned int a);\r
void PicoWrite8_io(unsigned int a, unsigned int d);\r
void PicoWrite16_io(unsigned int a, unsigned int d);\r
\r
// pico/memory.c\r
PICO_INTERNAL void PicoMemSetupPico(void);\r
\r
// cd/cdc.c\r
void cdc_init(void);\r
void cdc_reset(void);\r
int  cdc_context_save(unsigned char *state);\r
int  cdc_context_load(unsigned char *state);\r
int  cdc_context_load_old(unsigned char *state);\r
void cdc_dma_update(void);\r
int  cdc_decoder_update(unsigned char header[4]);\r
void cdc_reg_w(unsigned char data);\r
unsigned char  cdc_reg_r(void);\r
unsigned short cdc_host_r(void);\r
\r
// cd/cdd.c\r
void cdd_reset(void);\r
int cdd_context_save(unsigned char *state);\r
int cdd_context_load(unsigned char *state);\r
int cdd_context_load_old(unsigned char *state);\r
void cdd_read_data(unsigned char *dst);\r
void cdd_read_audio(unsigned int samples);\r
void cdd_update(void);\r
void cdd_process(void);\r
\r
// cd/cd_image.c\r
int load_cd_image(const char *cd_img_name, int *type);\r
\r
// cd/gfx.c\r
void gfx_init(void);\r
void gfx_start(unsigned int base);\r
void gfx_update(unsigned int cycles);\r
int gfx_context_save(unsigned char *state);\r
int gfx_context_load(const unsigned char *state);\r
\r
// cd/gfx_dma.c\r
void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc);\r
\r
// cd/memory.c\r
PICO_INTERNAL void PicoMemSetupCD(void);\r
unsigned int PicoRead8_mcd_io(unsigned int a);\r
unsigned int PicoRead16_mcd_io(unsigned int a);\r
void PicoWrite8_mcd_io(unsigned int a, unsigned int d);\r
void PicoWrite16_mcd_io(unsigned int a, unsigned int d);\r
void pcd_state_loaded_mem(void);\r
\r
// pico.c\r
extern struct Pico Pico;\r
extern struct PicoSRAM SRam;\r
extern int PicoPadInt[2];\r
extern int emustatus;\r
extern int scanlines_total;\r
extern void (*PicoResetHook)(void);\r
extern void (*PicoLineHook)(void);\r
PICO_INTERNAL int  CheckDMA(void);\r
PICO_INTERNAL void PicoDetectRegion(void);\r
PICO_INTERNAL void PicoSyncZ80(unsigned int m68k_cycles_done);\r
\r
// cd/mcd.c\r
#define PCDS_IEN1     (1<<1)\r
#define PCDS_IEN2     (1<<2)\r
#define PCDS_IEN3     (1<<3)\r
#define PCDS_IEN4     (1<<4)\r
#define PCDS_IEN5     (1<<5)\r
#define PCDS_IEN6     (1<<6)\r
\r
PICO_INTERNAL void PicoInitMCD(void);\r
PICO_INTERNAL void PicoExitMCD(void);\r
PICO_INTERNAL void PicoPowerMCD(void);\r
PICO_INTERNAL int  PicoResetMCD(void);\r
PICO_INTERNAL void PicoFrameMCD(void);\r
\r
enum pcd_event {\r
  PCD_EVENT_CDC,\r
  PCD_EVENT_TIMER3,\r
  PCD_EVENT_GFX,\r
  PCD_EVENT_DMA,\r
  PCD_EVENT_COUNT,\r
};\r
extern unsigned int pcd_event_times[PCD_EVENT_COUNT];\r
void pcd_event_schedule(unsigned int now, enum pcd_event event, int after);\r
void pcd_event_schedule_s68k(enum pcd_event event, int after);\r
void pcd_prepare_frame(void);\r
unsigned int pcd_cycles_m68k_to_s68k(unsigned int c);\r
int  pcd_sync_s68k(unsigned int m68k_target, int m68k_poll_sync);\r
void pcd_run_cpus(int m68k_cycles);\r
void pcd_soft_reset(void);\r
void pcd_state_loaded(void);\r
\r
// cd/pcm.c\r
void pcd_pcm_sync(unsigned int to);\r
void pcd_pcm_update(int *buffer, int length, int stereo);\r
void pcd_pcm_write(unsigned int a, unsigned int d);\r
unsigned int pcd_pcm_read(unsigned int a);\r
\r
// pico/pico.c\r
PICO_INTERNAL void PicoInitPico(void);\r
PICO_INTERNAL void PicoReratePico(void);\r
\r
// pico/xpcm.c\r
PICO_INTERNAL void PicoPicoPCMUpdate(short *buffer, int length, int stereo);\r
PICO_INTERNAL void PicoPicoPCMReset(void);\r
PICO_INTERNAL void PicoPicoPCMRerate(int xpcm_rate);\r
\r
// sek.c\r
PICO_INTERNAL void SekInit(void);\r
PICO_INTERNAL int  SekReset(void);\r
PICO_INTERNAL void SekState(int *data);\r
PICO_INTERNAL void SekSetRealTAS(int use_real);\r
PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub);\r
PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub);\r
void SekStepM68k(void);\r
void SekInitIdleDet(void);\r
void SekFinishIdleDet(void);\r
#if defined(CPU_CMP_R) || defined(CPU_CMP_W)\r
void SekTrace(int is_s68k);\r
#else\r
#define SekTrace(x)\r
#endif\r
\r
// cd/sek.c\r
PICO_INTERNAL void SekInitS68k(void);\r
PICO_INTERNAL int  SekResetS68k(void);\r
PICO_INTERNAL int  SekInterruptS68k(int irq);\r
void SekInterruptClearS68k(int irq);\r
\r
// sound/sound.c\r
extern short cdda_out_buffer[2*1152];\r
extern int PsndLen_exc_cnt;\r
extern int PsndLen_exc_add;\r
extern int timer_a_next_oflow, timer_a_step; // in z80 cycles\r
extern int timer_b_next_oflow, timer_b_step;\r
\r
void cdda_start_play(int lba_base, int lba_offset, int lb_len);\r
\r
void ym2612_sync_timers(int z80_cycles, int mode_old, int mode_new);\r
void ym2612_pack_state(void);\r
void ym2612_unpack_state(void);\r
\r
#define TIMER_NO_OFLOW 0x70000000\r
// tA =   72 * (1024 - NA) / M\r
#define TIMER_A_TICK_ZCYCLES  17203\r
// tB = 1152 * (256 - NA) / M\r
#define TIMER_B_TICK_ZCYCLES 262800 // 275251 broken, see Dai Makaimura\r
\r
#define timers_cycle() \\r
  if (timer_a_next_oflow > 0 && timer_a_next_oflow < TIMER_NO_OFLOW) \\r
    timer_a_next_oflow -= Pico.m.pal ? 70938*256 : 59659*256; \\r
  if (timer_b_next_oflow > 0 && timer_b_next_oflow < TIMER_NO_OFLOW) \\r
    timer_b_next_oflow -= Pico.m.pal ? 70938*256 : 59659*256; \\r
  ym2612_sync_timers(0, ym2612.OPN.ST.mode, ym2612.OPN.ST.mode);\r
\r
#define timers_reset() \\r
  timer_a_next_oflow = timer_b_next_oflow = TIMER_NO_OFLOW; \\r
  timer_a_step = TIMER_A_TICK_ZCYCLES * 1024; \\r
  timer_b_step = TIMER_B_TICK_ZCYCLES * 256;\r
\r
\r
// videoport.c\r
extern int line_base_cycles;\r
PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d);\r
PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a);\r
unsigned char PicoVideoRead8DataH(void);\r
unsigned char PicoVideoRead8DataL(void);\r
unsigned char PicoVideoRead8CtlH(void);\r
unsigned char PicoVideoRead8CtlL(void);\r
unsigned char PicoVideoRead8HV_H(void);\r
unsigned char PicoVideoRead8HV_L(void);\r
extern int (*PicoDmaHook)(unsigned int source, int len, unsigned short **base, unsigned int *mask);\r
\r
// misc.c\r
PICO_INTERNAL_ASM void memcpy16(unsigned short *dest, unsigned short *src, int count);\r
PICO_INTERNAL_ASM void memcpy16bswap(unsigned short *dest, void *src, int count);\r
PICO_INTERNAL_ASM void memcpy32(void *dest, const void *src, int count); // 32bit word count\r
PICO_INTERNAL_ASM void memset32(void *dest, int c, int count);\r
\r
// eeprom.c\r
void EEPROM_write8(unsigned int a, unsigned int d);\r
void EEPROM_write16(unsigned int d);\r
unsigned int EEPROM_read(void);\r
\r
// z80 functionality wrappers\r
PICO_INTERNAL void z80_init(void);\r
PICO_INTERNAL void z80_pack(void *data);\r
PICO_INTERNAL int  z80_unpack(const void *data);\r
PICO_INTERNAL void z80_reset(void);\r
PICO_INTERNAL void z80_exit(void);\r
\r
// cd/misc.c\r
PICO_INTERNAL_ASM void wram_2M_to_1M(unsigned char *m);\r
PICO_INTERNAL_ASM void wram_1M_to_2M(unsigned char *m);\r
\r
// sound/sound.c\r
PICO_INTERNAL void PsndReset(void);\r
PICO_INTERNAL void PsndStartFrame(void);\r
PICO_INTERNAL void PsndDoDAC(int line_to);\r
PICO_INTERNAL void PsndDoPSG(int line_to);\r
PICO_INTERNAL void PsndClear(void);\r
PICO_INTERNAL void PsndGetSamples(int y);\r
PICO_INTERNAL void PsndGetSamplesMS(void);\r
extern int PsndDacLine, PsndPsgLine;\r
\r
// sms.c\r
#ifndef NO_SMS\r
void PicoPowerMS(void);\r
void PicoResetMS(void);\r
void PicoMemSetupMS(void);\r
void PicoStateLoadedMS(void);\r
void PicoFrameMS(void);\r
void PicoFrameDrawOnlyMS(void);\r
#else\r
#define PicoPowerMS()\r
#define PicoResetMS()\r
#define PicoMemSetupMS()\r
#define PicoStateLoadedMS()\r
#define PicoFrameMS()\r
#define PicoFrameDrawOnlyMS()\r
#endif\r
\r
// 32x/32x.c\r
#ifndef NO_32X\r
extern struct Pico32x Pico32x;\r
enum p32x_event {\r
  P32X_EVENT_PWM,\r
  P32X_EVENT_FILLEND,\r
  P32X_EVENT_HINT,\r
  P32X_EVENT_COUNT,\r
};\r
extern unsigned int p32x_event_times[P32X_EVENT_COUNT];\r
\r
void Pico32xInit(void);\r
void PicoPower32x(void);\r
void PicoReset32x(void);\r
void Pico32xStartup(void);\r
void PicoUnload32x(void);\r
void PicoFrame32x(void);\r
void Pico32xStateLoaded(int is_early);\r
void p32x_sync_sh2s(unsigned int m68k_target);\r
void p32x_sync_other_sh2(SH2 *sh2, unsigned int m68k_target);\r
void p32x_update_irls(SH2 *active_sh2, int m68k_cycles);\r
void p32x_trigger_irq(SH2 *sh2, int m68k_cycles, unsigned int mask);\r
void p32x_update_cmd_irq(SH2 *sh2, int m68k_cycles);\r
void p32x_reset_sh2s(void);\r
void p32x_event_schedule(unsigned int now, enum p32x_event event, int after);\r
void p32x_event_schedule_sh2(SH2 *sh2, enum p32x_event event, int after);\r
void p32x_schedule_hint(SH2 *sh2, int m68k_cycles);\r
\r
// 32x/memory.c\r
struct Pico32xMem *Pico32xMem;\r
unsigned int PicoRead8_32x(unsigned int a);\r
unsigned int PicoRead16_32x(unsigned int a);\r
void PicoWrite8_32x(unsigned int a, unsigned int d);\r
void PicoWrite16_32x(unsigned int a, unsigned int d);\r
void PicoMemSetup32x(void);\r
void Pico32xSwapDRAM(int b);\r
void Pico32xMemStateLoaded(void);\r
void p32x_m68k_poll_event(unsigned int flags);\r
void p32x_sh2_poll_event(SH2 *sh2, unsigned int flags, unsigned int m68k_cycles);\r
\r
// 32x/draw.c\r
void PicoDrawSetOutFormat32x(pdso_t which, int use_32x_line_mode);\r
void FinalizeLine32xRGB555(int sh, int line, struct PicoEState *est);\r
void PicoDraw32xLayer(int offs, int lines, int mdbg);\r
void PicoDraw32xLayerMdOnly(int offs, int lines);\r
extern int (*PicoScan32xBegin)(unsigned int num);\r
extern int (*PicoScan32xEnd)(unsigned int num);\r
enum {\r
  PDM32X_OFF,\r
  PDM32X_32X_ONLY,\r
  PDM32X_BOTH,\r
};\r
extern int Pico32xDrawMode;\r
\r
// 32x/pwm.c\r
unsigned int p32x_pwm_read16(unsigned int a, SH2 *sh2,\r
  unsigned int m68k_cycles);\r
void p32x_pwm_write16(unsigned int a, unsigned int d,\r
  SH2 *sh2, unsigned int m68k_cycles);\r
void p32x_pwm_update(int *buf32, int length, int stereo);\r
void p32x_pwm_ctl_changed(void);\r
void p32x_pwm_schedule(unsigned int m68k_now);\r
void p32x_pwm_schedule_sh2(SH2 *sh2);\r
void p32x_pwm_sync_to_sh2(SH2 *sh2);\r
void p32x_pwm_irq_event(unsigned int m68k_now);\r
void p32x_pwm_state_loaded(void);\r
\r
// 32x/sh2soc.c\r
void p32x_dreq0_trigger(void);\r
void p32x_dreq1_trigger(void);\r
void p32x_timers_recalc(void);\r
void p32x_timers_do(unsigned int m68k_slice);\r
void sh2_peripheral_reset(SH2 *sh2);\r
unsigned int sh2_peripheral_read8(unsigned int a, SH2 *sh2);\r
unsigned int sh2_peripheral_read16(unsigned int a, SH2 *sh2);\r
unsigned int sh2_peripheral_read32(unsigned int a, SH2 *sh2);\r
void REGPARM(3) sh2_peripheral_write8(unsigned int a, unsigned int d, SH2 *sh2);\r
void REGPARM(3) sh2_peripheral_write16(unsigned int a, unsigned int d, SH2 *sh2);\r
void REGPARM(3) sh2_peripheral_write32(unsigned int a, unsigned int d, SH2 *sh2);\r
\r
#else\r
#define Pico32xInit()\r
#define PicoPower32x()\r
#define PicoReset32x()\r
#define PicoFrame32x()\r
#define PicoUnload32x()\r
#define Pico32xStateLoaded()\r
#define FinalizeLine32xRGB555 NULL\r
#define p32x_pwm_update(...)\r
#define p32x_timers_recalc()\r
#endif\r
\r
/* avoid dependency on newer glibc */\r
static __inline int isspace_(int c)\r
{\r
	return (0x09 <= c && c <= 0x0d) || c == ' ';\r
}\r
\r
#ifndef ARRAY_SIZE\r
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))\r
#endif\r
\r
// emulation event logging\r
#ifndef EL_LOGMASK\r
# ifdef __x86_64__ // HACK\r
#  define EL_LOGMASK (EL_STATUS|EL_IDLE|EL_ANOMALY)\r
# else\r
#  define EL_LOGMASK (EL_STATUS)\r
# endif\r
#endif\r
\r
#define EL_HVCNT   0x00000001 /* hv counter reads */\r
#define EL_SR      0x00000002 /* SR reads */\r
#define EL_INTS    0x00000004 /* ints and acks */\r
#define EL_YMTIMER 0x00000008 /* ym2612 timer stuff */\r
#define EL_INTSW   0x00000010 /* log irq switching on/off */\r
#define EL_ASVDP   0x00000020 /* VDP accesses during active scan */\r
#define EL_VDPDMA  0x00000040 /* VDP DMA transfers and their timing */\r
#define EL_BUSREQ  0x00000080 /* z80 busreq r/w or reset w */\r
#define EL_Z80BNK  0x00000100 /* z80 i/o through bank area */\r
#define EL_SRAMIO  0x00000200 /* sram i/o */\r
#define EL_EEPROM  0x00000400 /* eeprom debug */\r
#define EL_UIO     0x00000800 /* unmapped i/o */\r
#define EL_IO      0x00001000 /* all i/o */\r
#define EL_CDPOLL  0x00002000 /* MCD: log poll detection */\r
#define EL_SVP     0x00004000 /* SVP stuff */\r
#define EL_PICOHW  0x00008000 /* Pico stuff */\r
#define EL_IDLE    0x00010000 /* idle loop det. */\r
#define EL_CDREGS  0x00020000 /* MCD: register access */\r
#define EL_CDREG3  0x00040000 /* MCD: register 3 only */\r
#define EL_32X     0x00080000\r
#define EL_PWM     0x00100000 /* 32X PWM stuff (LOTS of output) */\r
#define EL_32XP    0x00200000 /* 32X peripherals */\r
#define EL_CD      0x00400000 /* MCD */\r
\r
#define EL_STATUS  0x40000000 /* status messages */\r
#define EL_ANOMALY 0x80000000 /* some unexpected conditions (during emulation) */\r
\r
#if EL_LOGMASK\r
#define elprintf(w,f,...) \\r
do { \\r
	if ((w) & EL_LOGMASK) \\r
		lprintf("%05i:%03i: " f "\n",Pico.m.frame_count,Pico.m.scanline,##__VA_ARGS__); \\r
} while (0)\r
#elif defined(_MSC_VER)\r
#define elprintf\r
#else\r
#define elprintf(w,f,...)\r
#endif\r
\r
// profiling\r
#ifdef PPROF\r
#include <platform/linux/pprof.h>\r
#else\r
#define pprof_init()\r
#define pprof_finish()\r
#define pprof_start(x)\r
#define pprof_end(...)\r
#define pprof_end_sub(...)\r
#endif\r
\r
#ifdef EVT_LOG\r
enum evt {\r
  EVT_FRAME_START,\r
  EVT_NEXT_LINE,\r
  EVT_RUN_START,\r
  EVT_RUN_END,\r
  EVT_POLL_START,\r
  EVT_POLL_END,\r
  EVT_CNT\r
};\r
\r
enum evt_cpu {\r
  EVT_M68K,\r
  EVT_S68K,\r
  EVT_MSH2,\r
  EVT_SSH2,\r
  EVT_CPU_CNT\r
};\r
\r
void pevt_log(unsigned int cycles, enum evt_cpu c, enum evt e);\r
void pevt_dump(void);\r
\r
#define pevt_log_m68k(e) \\r
  pevt_log(SekCyclesDone(), EVT_M68K, e)\r
#define pevt_log_m68k_o(e) \\r
  pevt_log(SekCyclesDone(), EVT_M68K, e)\r
#define pevt_log_sh2(sh2, e) \\r
  pevt_log(sh2_cycles_done_m68k(sh2), EVT_MSH2 + (sh2)->is_slave, e)\r
#define pevt_log_sh2_o(sh2, e) \\r
  pevt_log((sh2)->m68krcycles_done, EVT_MSH2 + (sh2)->is_slave, e)\r
#else\r
#define pevt_log(c, e)\r
#define pevt_log_m68k(e)\r
#define pevt_log_m68k_o(e)\r
#define pevt_log_sh2(sh2, e)\r
#define pevt_log_sh2_o(sh2, e)\r
#define pevt_dump()\r
#endif\r
\r
// misc\r
#ifdef _MSC_VER\r
#define cdprintf\r
#else\r
#define cdprintf(x...)\r
#endif\r
\r
#if defined(__GNUC__) && defined(__i386__)\r
#define REGPARM(x) __attribute__((regparm(x)))\r
#else\r
#define REGPARM(x)\r
#endif\r
\r
#ifdef __GNUC__\r
#define NOINLINE __attribute__((noinline))\r
#else\r
#define NOINLINE\r
#endif\r
\r
#ifdef __cplusplus\r
} // End of extern "C"\r
#endif\r
\r
#endif // PICO_INTERNAL_INCLUDED\r
\r