[picodrive.git] / pico / sek.c

/*\r
 * PicoDrive\r
 * (c) Copyright Dave, 2004\r
 * (C) notaz, 2006-2009\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#include "pico_int.h"\r
#include "memory.h"\r
\r
\r
unsigned int SekCycleCnt;\r
unsigned int SekCycleAim;\r
\r
\r
/* context */\r
// Cyclone 68000\r
#ifdef EMU_C68K\r
struct Cyclone PicoCpuCM68k;\r
#endif\r
// MUSASHI 68000\r
#ifdef EMU_M68K\r
m68ki_cpu_core PicoCpuMM68k;\r
#endif\r
// FAME 68000\r
#ifdef EMU_F68K\r
M68K_CONTEXT PicoCpuFM68k;\r
#endif\r
\r
\r
/* callbacks */\r
#ifdef EMU_C68K\r
// interrupt acknowledgment\r
static int SekIntAck(int level)\r
{\r
  // try to emulate VDP's reaction to 68000 int ack\r
  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
  PicoCpuCM68k.irq = 0;\r
  return CYCLONE_INT_ACK_AUTOVECTOR;\r
}\r
\r
static void SekResetAck(void)\r
{\r
  elprintf(EL_ANOMALY, "Reset encountered @ %06x", SekPc);\r
}\r
\r
static int SekUnrecognizedOpcode()\r
{\r
  unsigned int pc;\r
  pc = SekPc;\r
  elprintf(EL_ANOMALY, "Unrecognized Opcode @ %06x", pc);\r
  // see if we are still in a mapped region\r
  pc &= 0x00ffffff;\r
  if (map_flag_set(m68k_read16_map[pc >> M68K_MEM_SHIFT])) {\r
    elprintf(EL_STATUS|EL_ANOMALY, "m68k crash @%06x", pc);\r
    PicoCpuCM68k.cycles = 0;\r
    PicoCpuCM68k.state_flags |= 1;\r
    return 1;\r
  }\r
  // happened once - may happen again\r
  SekFinishIdleDet();\r
#ifdef EMU_M68K // debugging cyclone\r
  {\r
    extern int have_illegal;\r
    have_illegal = 1;\r
  }\r
#endif\r
  return 0;\r
}\r
#endif\r
\r
\r
#ifdef EMU_M68K\r
static int SekIntAckM68K(int level)\r
{\r
  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
  CPU_INT_LEVEL = 0;\r
  return M68K_INT_ACK_AUTOVECTOR;\r
}\r
\r
static int SekTasCallback(void)\r
{\r
  return 0; // no writeback\r
}\r
#endif\r
\r
\r
#ifdef EMU_F68K\r
static void SekIntAckF68K(unsigned level)\r
{\r
  if     (level == 4) {\r
    Pico.video.pending_ints = 0;\r
    elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCyclesDone());\r
  }\r
  else if(level == 6) {\r
    Pico.video.pending_ints &= ~0x20;\r
    elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCyclesDone());\r
  }\r
  PicoCpuFM68k.interrupts[0] = 0;\r
}\r
#endif\r
\r
\r
PICO_INTERNAL void SekInit(void)\r
{\r
#ifdef EMU_C68K\r
  CycloneInit();\r
  memset(&PicoCpuCM68k,0,sizeof(PicoCpuCM68k));\r
  PicoCpuCM68k.IrqCallback=SekIntAck;\r
  PicoCpuCM68k.ResetCallback=SekResetAck;\r
  PicoCpuCM68k.UnrecognizedCallback=SekUnrecognizedOpcode;\r
  PicoCpuCM68k.flags=4;   // Z set\r
#endif\r
#ifdef EMU_M68K\r
  {\r
    void *oldcontext = m68ki_cpu_p;\r
    m68k_set_context(&PicoCpuMM68k);\r
    m68k_set_cpu_type(M68K_CPU_TYPE_68000);\r
    m68k_init();\r
    m68k_set_int_ack_callback(SekIntAckM68K);\r
    m68k_set_tas_instr_callback(SekTasCallback);\r
    //m68k_pulse_reset();\r
    m68k_set_context(oldcontext);\r
  }\r
#endif\r
#ifdef EMU_F68K\r
  {\r
    void *oldcontext = g_m68kcontext;\r
    g_m68kcontext = &PicoCpuFM68k;\r
    memset(&PicoCpuFM68k, 0, sizeof(PicoCpuFM68k));\r
    fm68k_init();\r
    PicoCpuFM68k.iack_handler = SekIntAckF68K;\r
    PicoCpuFM68k.sr = 0x2704; // Z flag\r
    g_m68kcontext = oldcontext;\r
  }\r
#endif\r
}\r
\r
\r
// Reset the 68000:\r
PICO_INTERNAL int SekReset(void)\r
{\r
  if (Pico.rom==NULL) return 1;\r
\r
#ifdef EMU_C68K\r
  CycloneReset(&PicoCpuCM68k);\r
#endif\r
#ifdef EMU_M68K\r
  m68k_set_context(&PicoCpuMM68k); // if we ever reset m68k, we always need it's context to be set\r
  m68ki_cpu.sp[0]=0;\r
  m68k_set_irq(0);\r
  m68k_pulse_reset();\r
  REG_USP = 0; // ?\r
#endif\r
#ifdef EMU_F68K\r
  {\r
    g_m68kcontext = &PicoCpuFM68k;\r
    fm68k_reset();\r
  }\r
#endif\r
\r
  return 0;\r
}\r
\r
void SekStepM68k(void)\r
{\r
  SekCycleAim=SekCycleCnt+1;\r
#if defined(EMU_CORE_DEBUG)\r
  SekCycleCnt+=CM_compareRun(1, 0);\r
#elif defined(EMU_C68K)\r
  PicoCpuCM68k.cycles=1;\r
  CycloneRun(&PicoCpuCM68k);\r
  SekCycleCnt+=1-PicoCpuCM68k.cycles;\r
#elif defined(EMU_M68K)\r
  SekCycleCnt+=m68k_execute(1);\r
#elif defined(EMU_F68K)\r
  SekCycleCnt+=fm68k_emulate(1, 0);\r
#endif\r
}\r
\r
PICO_INTERNAL void SekSetRealTAS(int use_real)\r
{\r
#ifdef EMU_C68K\r
  CycloneSetRealTAS(use_real);\r
#endif\r
#ifdef EMU_F68K\r
  // TODO\r
#endif\r
}\r
\r
// Pack the cpu into a common format:\r
// XXX: rename\r
PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub)\r
{\r
  unsigned int pc=0;\r
\r
#if defined(EMU_C68K)\r
  struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
  memcpy(cpu,context->d,0x40);\r
  pc=context->pc-context->membase;\r
  *(unsigned int *)(cpu+0x44)=CycloneGetSr(context);\r
  *(unsigned int *)(cpu+0x48)=context->osp;\r
  cpu[0x4c] = context->irq;\r
  cpu[0x4d] = context->state_flags & 1;\r
#elif defined(EMU_M68K)\r
  void *oldcontext = m68ki_cpu_p;\r
  m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
  memcpy(cpu,m68ki_cpu_p->dar,0x40);\r
  pc=m68ki_cpu_p->pc;\r
  *(unsigned int  *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r
  *(unsigned int  *)(cpu+0x48)=m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET];\r
  cpu[0x4c] = CPU_INT_LEVEL>>8;\r
  cpu[0x4d] = CPU_STOPPED;\r
  m68k_set_context(oldcontext);\r
#elif defined(EMU_F68K)\r
  M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
  memcpy(cpu,context->dreg,0x40);\r
  pc=context->pc;\r
  *(unsigned int  *)(cpu+0x44)=context->sr;\r
  *(unsigned int  *)(cpu+0x48)=context->asp;\r
  cpu[0x4c] = context->interrupts[0];\r
  cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;\r
#endif\r
\r
  *(unsigned int *)(cpu+0x40) = pc;\r
  *(unsigned int *)(cpu+0x50) =\r
    is_sub ? SekCycleCntS68k : SekCycleCnt;\r
}\r
\r
PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)\r
{\r
#if defined(EMU_C68K)\r
  struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
  CycloneSetSr(context, *(unsigned int *)(cpu+0x44));\r
  context->osp=*(unsigned int *)(cpu+0x48);\r
  memcpy(context->d,cpu,0x40);\r
  context->membase = 0;\r
  context->pc = *(unsigned int *)(cpu+0x40);\r
  CycloneUnpack(context, NULL); // rebase PC\r
  context->irq = cpu[0x4c];\r
  context->state_flags = 0;\r
  if (cpu[0x4d])\r
    context->state_flags |= 1;\r
#elif defined(EMU_M68K)\r
  void *oldcontext = m68ki_cpu_p;\r
  m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
  m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r
  memcpy(m68ki_cpu_p->dar,cpu,0x40);\r
  m68ki_cpu_p->pc=*(unsigned int *)(cpu+0x40);\r
  m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET]=*(unsigned int *)(cpu+0x48);\r
  CPU_INT_LEVEL = cpu[0x4c] << 8;\r
  CPU_STOPPED = cpu[0x4d];\r
  m68k_set_context(oldcontext);\r
#elif defined(EMU_F68K)\r
  M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
  memcpy(context->dreg,cpu,0x40);\r
  context->pc =*(unsigned int *)(cpu+0x40);\r
  context->sr =*(unsigned int *)(cpu+0x44);\r
  context->asp=*(unsigned int *)(cpu+0x48);\r
  context->interrupts[0] = cpu[0x4c];\r
  context->execinfo &= ~FM68K_HALTED;\r
  if (cpu[0x4d]&1) context->execinfo |= FM68K_HALTED;\r
#endif\r
  if (is_sub)\r
    SekCycleCntS68k = *(unsigned int *)(cpu+0x50);\r
  else\r
    SekCycleCnt = *(unsigned int *)(cpu+0x50);\r
}\r
\r
\r
/* idle loop detection, not to be used in CD mode */\r
#ifdef EMU_C68K\r
#include "cpu/cyclone/tools/idle.h"\r
#endif\r
\r
static unsigned short **idledet_ptrs = NULL;\r
static int idledet_count = 0, idledet_bads = 0;\r
static int idledet_start_frame = 0;\r
\r
#if 0\r
#define IDLE_STATS 1\r
unsigned int idlehit_addrs[128], idlehit_counts[128];\r
\r
void SekRegisterIdleHit(unsigned int pc)\r
{\r
  int i;\r
  for (i = 0; i < 127 && idlehit_addrs[i]; i++) {\r
    if (idlehit_addrs[i] == pc) {\r
      idlehit_counts[i]++;\r
      return;\r
    }\r
  }\r
  idlehit_addrs[i] = pc;\r
  idlehit_counts[i] = 1;\r
  idlehit_addrs[i+1] = 0;\r
}\r
#endif\r
\r
void SekInitIdleDet(void)\r
{\r
  unsigned short **tmp;\r
  tmp = realloc(idledet_ptrs, 0x200 * sizeof(tmp[0]));\r
  if (tmp == NULL) {\r
    free(idledet_ptrs);\r
    idledet_ptrs = NULL;\r
  }\r
  else\r
    idledet_ptrs = tmp;\r
  idledet_count = idledet_bads = 0;\r
  idledet_start_frame = Pico.m.frame_count + 360;\r
#ifdef IDLE_STATS\r
  idlehit_addrs[0] = 0;\r
#endif\r
\r
#ifdef EMU_C68K\r
  CycloneInitIdle();\r
#endif\r
#ifdef EMU_F68K\r
  fm68k_emulate(0, 1);\r
#endif\r
}\r
\r
int SekIsIdleReady(void)\r
{\r
	return (Pico.m.frame_count >= idledet_start_frame);\r
}\r
\r
int SekIsIdleCode(unsigned short *dst, int bytes)\r
{\r
  // printf("SekIsIdleCode %04x %i\n", *dst, bytes);\r
  switch (bytes)\r
  {\r
    case 2:\r
      if ((*dst & 0xf000) != 0x6000)     // not another branch\r
        return 1;\r
      break;\r
    case 4:\r
      if ( (*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w); tas ($xxxx.w)\r
           (*dst & 0xc1ff) == 0x0038 || // move.x ($xxxx.w), dX\r
           (*dst & 0xf13f) == 0xb038)   // cmp.x ($xxxx.w), dX\r
        return 1;\r
      if (PicoAHW & (PAHW_MCD|PAHW_32X))\r
        break;\r
      // with no addons, there should be no need to wait\r
      // for byte change anywhere\r
      if ( (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX)\r
           (*dst & 0xfff8) == 0x4a28)   // tst.b ($xxxx,a0)\r
        return 1;\r
      break;\r
    case 6:\r
      if ( ((dst[1] & 0xe0) == 0xe0 && ( // RAM and\r
            *dst == 0x4a39 ||            //   tst.b ($xxxxxxxx)\r
            *dst == 0x4a79 ||            //   tst.w ($xxxxxxxx)\r
            *dst == 0x4ab9 ||            //   tst.l ($xxxxxxxx)\r
            (*dst & 0xc1ff) == 0x0039 || //   move.x ($xxxxxxxx), dX\r
            (*dst & 0xf13f) == 0xb039))||//   cmp.x ($xxxxxxxx), dX\r
            *dst == 0x0838 ||            // btst $X, ($xxxx.w) [6 byte op]\r
            (*dst & 0xffbf) == 0x0c38)   // cmpi.{b,w} $X, ($xxxx.w)\r
        return 1;\r
      break;\r
    case 8:\r
      if ( ((dst[2] & 0xe0) == 0xe0 && ( // RAM and\r
            *dst == 0x0839 ||            //   btst $X, ($xxxxxxxx.w) [8 byte op]\r
            (*dst & 0xffbf) == 0x0c39))||//   cmpi.{b,w} $X, ($xxxxxxxx)\r
            *dst == 0x0cb8)              // cmpi.l $X, ($xxxx.w)\r
        return 1;\r
      break;\r
    case 12:\r
      if (PicoAHW & (PAHW_MCD|PAHW_32X))\r
        break;\r
      if ( (*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX\r
            (dst[1]&0xf100) == 0x0000 && // arithmetic\r
            (dst[3]&0xf100) == 0x0000)   // arithmetic\r
        return 1;\r
      break;\r
  }\r
\r
  return 0;\r
}\r
\r
int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)\r
{\r
  int is_main68k = 1;\r
  u16 *target;\r
  uptr v;\r
\r
#if   defined(EMU_C68K)\r
  struct Cyclone *cyc = ctx;\r
  is_main68k = cyc == &PicoCpuCM68k;\r
  pc -= cyc->membase;\r
#elif defined(EMU_F68K)\r
  is_main68k = ctx == &PicoCpuFM68k;\r
#endif\r
  pc &= ~0xff000000;\r
  if (!(newop&0x200))\r
  elprintf(EL_IDLE, "idle: patch %06x %04x %04x %c %c #%i", pc, oldop, newop,\r
    (newop&0x200)?'n':'y', is_main68k?'m':'s', idledet_count);\r
\r
  // XXX: probably shouldn't patch RAM too\r
  v = m68k_read16_map[pc >> M68K_MEM_SHIFT];\r
  if (!(v & 0x80000000))\r
    target = (u16 *)((v << 1) + pc);\r
  else {\r
    if (++idledet_bads > 128)\r
      return 2; // remove detector\r
    return 1; // don't patch\r
  }\r
\r
  if (idledet_count >= 0x200 && (idledet_count & 0x1ff) == 0) {\r
    unsigned short **tmp;\r
    tmp = realloc(idledet_ptrs, (idledet_count+0x200) * sizeof(tmp[0]));\r
    if (tmp == NULL)\r
      return 1;\r
    idledet_ptrs = tmp;\r
  }\r
\r
  idledet_ptrs[idledet_count++] = target;\r
\r
  return 0;\r
}\r
\r
void SekFinishIdleDet(void)\r
{\r
  if (idledet_count < 0)\r
    return;\r
#ifdef EMU_C68K\r
  CycloneFinishIdle();\r
#endif\r
#ifdef EMU_F68K\r
  fm68k_emulate(0, 2);\r
#endif\r
  while (idledet_count > 0)\r
  {\r
    unsigned short *op = idledet_ptrs[--idledet_count];\r
    if      ((*op & 0xfd00) == 0x7100)\r
      *op &= 0xff, *op |= 0x6600;\r
    else if ((*op & 0xfd00) == 0x7500)\r
      *op &= 0xff, *op |= 0x6700;\r
    else if ((*op & 0xfd00) == 0x7d00)\r
      *op &= 0xff, *op |= 0x6000;\r
    else\r
      elprintf(EL_STATUS|EL_IDLE, "idle: don't know how to restore %04x", *op);\r
  }\r
  idledet_count = -1;\r
}\r
\r
\r
#if defined(CPU_CMP_R) || defined(CPU_CMP_W)\r
#include "debug.h"\r
\r
struct ref_68k {\r
  u32 dar[16];\r
  u32 pc;\r
  u32 sr;\r
  u32 cycles;\r
  u32 pc_prev;\r
};\r
struct ref_68k ref_68ks[2];\r
static int current_68k;\r
\r
void SekTrace(int is_s68k)\r
{\r
  struct ref_68k *x68k = &ref_68ks[is_s68k];\r
  u32 pc = is_s68k ? SekPcS68k : SekPc;\r
  u32 sr = is_s68k ? SekSrS68k : SekSr;\r
  u32 cycles = is_s68k ? SekCycleCntS68k : SekCycleCnt;\r
  u32 r;\r
  u8 cmd;\r
#ifdef CPU_CMP_W\r
  int i;\r
\r
  if (is_s68k != current_68k) {\r
    current_68k = is_s68k;\r
    cmd = CTL_68K_SLAVE | current_68k;\r
    tl_write(&cmd, sizeof(cmd));\r
  }\r
  if (pc != x68k->pc) {\r
    x68k->pc = pc;\r
    tl_write_uint(CTL_68K_PC, x68k->pc);\r
  }\r
  if (sr != x68k->sr) {\r
    x68k->sr = sr;\r
    tl_write_uint(CTL_68K_SR, x68k->sr);\r
  }\r
  for (i = 0; i < 16; i++) {\r
    r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
    if (r != x68k->dar[i]) {\r
      x68k->dar[i] = r;\r
      tl_write_uint(CTL_68K_R + i, r);\r
    }\r
  }\r
  tl_write_uint(CTL_68K_CYCLES, cycles);\r
#else\r
  int i, bad = 0;\r
\r
  while (1)\r
  {\r
    int ret = tl_read(&cmd, sizeof(cmd));\r
    if (ret == 0) {\r
      elprintf(EL_STATUS, "EOF");\r
      exit(1);\r
    }\r
    switch (cmd) {\r
    case CTL_68K_SLAVE:\r
    case CTL_68K_SLAVE + 1:\r
      current_68k = cmd & 1;\r
      break;\r
    case CTL_68K_PC:\r
      tl_read_uint(&x68k->pc);\r
      break;\r
    case CTL_68K_SR:\r
      tl_read_uint(&x68k->sr);\r
      break;\r
    case CTL_68K_CYCLES:\r
      tl_read_uint(&x68k->cycles);\r
      goto breakloop;\r
    default:\r
      if (CTL_68K_R <= cmd && cmd < CTL_68K_R + 0x10)\r
        tl_read_uint(&x68k->dar[cmd - CTL_68K_R]);\r
      else\r
        elprintf(EL_STATUS, "invalid cmd: %02x", cmd);\r
    }\r
  }\r
\r
breakloop:\r
  if (is_s68k != current_68k) {\r
		printf("bad 68k: %d %d\n", is_s68k, current_68k);\r
    bad = 1;\r
  }\r
  if (cycles != x68k->cycles) {\r
		printf("bad cycles: %u %u\n", cycles, x68k->cycles);\r
    bad = 1;\r
  }\r
  if ((pc ^ x68k->pc) & 0xffffff) {\r
		printf("bad PC: %08x %08x\n", pc, x68k->pc);\r
    bad = 1;\r
  }\r
  if (sr != x68k->sr) {\r
		printf("bad SR:  %03x %03x\n", sr, x68k->sr);\r
    bad = 1;\r
  }\r
  for (i = 0; i < 16; i++) {\r
    r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
    if (r != x68k->dar[i]) {\r
		  printf("bad %c%d: %08x %08x\n", i < 8 ? 'D' : 'A', i & 7,\r
        r, x68k->dar[i]);\r
      bad = 1;\r
    }\r
  }\r
  if (bad) {\r
    for (i = 0; i < 8; i++)\r
			printf("D%d: %08x  A%d: %08x\n", i, x68k->dar[i],\r
        i, x68k->dar[i + 8]);\r
		printf("PC: %08x, %08x\n", x68k->pc, x68k->pc_prev);\r
		printf("SR: %04x\n", x68k->sr);\r
\r
    PDebugDumpMem();\r
    exit(1);\r
  }\r
  x68k->pc_prev = x68k->pc;\r
#endif\r
}\r
#endif // CPU_CMP_*\r
\r
#if defined(EMU_M68K) && M68K_INSTRUCTION_HOOK == OPT_SPECIFY_HANDLER\r
static unsigned char op_flags[0x400000/2] = { 0, };\r
static int atexit_set = 0;\r
\r
static void make_idc(void)\r
{\r
  FILE *f = fopen("idc.idc", "w");\r
  int i;\r
  if (!f) return;\r
  fprintf(f, "#include <idc.idc>\nstatic main() {\n");\r
  for (i = 0; i < 0x400000/2; i++)\r
    if (op_flags[i] != 0)\r
      fprintf(f, "  MakeCode(0x%06x);\n", i*2);\r
  fprintf(f, "}\n");\r
  fclose(f);\r
}\r
\r
void instruction_hook(void)\r
{\r
  if (!atexit_set) {\r
    atexit(make_idc);\r
    atexit_set = 1;\r
  }\r
  if (REG_PC < 0x400000)\r
    op_flags[REG_PC/2] = 1;\r
}\r
#endif\r
\r
// vim:shiftwidth=2:ts=2:expandtab\r
Commit	Line	Data
cff531af	1	/*\r
	2	* PicoDrive\r
	3	* (c) Copyright Dave, 2004\r
	4	* (C) notaz, 2006-2009\r
	5	*\r
	6	* This work is licensed under the terms of MAME license.\r
	7	* See COPYING file in the top-level directory.\r
	8	*/\r
cc68a136	9	\r
efcba75f	10	#include "pico_int.h"\r
488c0bbf	11	#include "memory.h"\r
cc68a136	12	\r
cc68a136	13	\r
ae214f1c	14	unsigned int SekCycleCnt;\r
ae214f1c	15	unsigned int SekCycleAim;\r
cc68a136	16	\r
70357ce5	17	\r
	18	/* context */\r
	19	// Cyclone 68000\r
cc68a136	20	#ifdef EMU_C68K\r
3aa1e148	21	struct Cyclone PicoCpuCM68k;\r
cc68a136	22	#endif\r
70357ce5	23	// MUSASHI 68000\r
cc68a136	24	#ifdef EMU_M68K\r
3aa1e148	25	m68ki_cpu_core PicoCpuMM68k;\r
cc68a136	26	#endif\r
70357ce5	27	// FAME 68000\r
70357ce5	28	#ifdef EMU_F68K\r
3aa1e148	29	M68K_CONTEXT PicoCpuFM68k;\r
cc68a136	30	#endif\r
	31	\r
	32	\r
70357ce5	33	/* callbacks */\r
cc68a136	34	#ifdef EMU_C68K\r
b837b69b	35	// interrupt acknowledgment\r
0af33fe0	36	static int SekIntAck(int level)\r
cc68a136	37	{\r
cc68a136	38	// try to emulate VDP's reaction to 68000 int ack\r
69996cb7	39	if (level == 4) { Pico.video.pending_ints = 0; elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
69996cb7	40	else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
3aa1e148	41	PicoCpuCM68k.irq = 0;\r
0af33fe0	42	return CYCLONE_INT_ACK_AUTOVECTOR;\r
cc68a136	43	}\r
cc68a136	44	\r
69996cb7	45	static void SekResetAck(void)\r
cc68a136	46	{\r
69996cb7	47	elprintf(EL_ANOMALY, "Reset encountered @ %06x", SekPc);\r
cc68a136	48	}\r
	49	\r
	50	static int SekUnrecognizedOpcode()\r
	51	{\r
b4db550e	52	unsigned int pc;\r
cc68a136	53	pc = SekPc;\r
b4db550e	54	elprintf(EL_ANOMALY, "Unrecognized Opcode @ %06x", pc);\r
	55	// see if we are still in a mapped region\r
	56	pc &= 0x00ffffff;\r
	57	if (map_flag_set(m68k_read16_map[pc >> M68K_MEM_SHIFT])) {\r
	58	elprintf(EL_STATUS\|EL_ANOMALY, "m68k crash @%06x", pc);\r
3aa1e148	59	PicoCpuCM68k.cycles = 0;\r
3aa1e148	60	PicoCpuCM68k.state_flags \|= 1;\r
cc68a136	61	return 1;\r
cc68a136	62	}\r
2b15cea8	63	// happened once - may happen again\r
2b15cea8	64	SekFinishIdleDet();\r
2d0b15bb	65	#ifdef EMU_M68K // debugging cyclone\r
	66	{\r
	67	extern int have_illegal;\r
	68	have_illegal = 1;\r
	69	}\r
	70	#endif\r
cc68a136	71	return 0;\r
	72	}\r
	73	#endif\r
	74	\r
	75	\r
	76	#ifdef EMU_M68K\r
	77	static int SekIntAckM68K(int level)\r
	78	{\r
69996cb7	79	if (level == 4) { Pico.video.pending_ints = 0; elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
69996cb7	80	else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCycleCnt); }\r
cc68a136	81	CPU_INT_LEVEL = 0;\r
	82	return M68K_INT_ACK_AUTOVECTOR;\r
	83	}\r
0af33fe0	84	\r
	85	static int SekTasCallback(void)\r
	86	{\r
	87	return 0; // no writeback\r
	88	}\r
cc68a136	89	#endif\r
	90	\r
	91	\r
70357ce5	92	#ifdef EMU_F68K\r
3aa1e148	93	static void SekIntAckF68K(unsigned level)\r
70357ce5	94	{\r
c7fd7bb8	95	if (level == 4) {\r
	96	Pico.video.pending_ints = 0;\r
	97	elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCyclesDone());\r
	98	}\r
	99	else if(level == 6) {\r
	100	Pico.video.pending_ints &= ~0x20;\r
	101	elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCyclesDone());\r
	102	}\r
3aa1e148	103	PicoCpuFM68k.interrupts[0] = 0;\r
70357ce5	104	}\r
	105	#endif\r
	106	\r
cc68a136	107	\r
2aa27095	108	PICO_INTERNAL void SekInit(void)\r
cc68a136	109	{\r
	110	#ifdef EMU_C68K\r
	111	CycloneInit();\r
3aa1e148	112	memset(&PicoCpuCM68k,0,sizeof(PicoCpuCM68k));\r
	113	PicoCpuCM68k.IrqCallback=SekIntAck;\r
	114	PicoCpuCM68k.ResetCallback=SekResetAck;\r
	115	PicoCpuCM68k.UnrecognizedCallback=SekUnrecognizedOpcode;\r
03e4f2a3	116	PicoCpuCM68k.flags=4; // Z set\r
cc68a136	117	#endif\r
cc68a136	118	#ifdef EMU_M68K\r
	119	{\r
	120	void *oldcontext = m68ki_cpu_p;\r
3aa1e148	121	m68k_set_context(&PicoCpuMM68k);\r
cc68a136	122	m68k_set_cpu_type(M68K_CPU_TYPE_68000);\r
	123	m68k_init();\r
	124	m68k_set_int_ack_callback(SekIntAckM68K);\r
0af33fe0	125	m68k_set_tas_instr_callback(SekTasCallback);\r
9037e45d	126	//m68k_pulse_reset();\r
cc68a136	127	m68k_set_context(oldcontext);\r
	128	}\r
	129	#endif\r
70357ce5	130	#ifdef EMU_F68K\r
	131	{\r
	132	void *oldcontext = g_m68kcontext;\r
3aa1e148	133	g_m68kcontext = &PicoCpuFM68k;\r
3aa1e148	134	memset(&PicoCpuFM68k, 0, sizeof(PicoCpuFM68k));\r
03e4f2a3	135	fm68k_init();\r
3aa1e148	136	PicoCpuFM68k.iack_handler = SekIntAckF68K;\r
b5e5172d	137	PicoCpuFM68k.sr = 0x2704; // Z flag\r
70357ce5	138	g_m68kcontext = oldcontext;\r
	139	}\r
	140	#endif\r
cc68a136	141	}\r
cc68a136	142	\r
70357ce5	143	\r
cc68a136	144	// Reset the 68000:\r
2aa27095	145	PICO_INTERNAL int SekReset(void)\r
cc68a136	146	{\r
	147	if (Pico.rom==NULL) return 1;\r
	148	\r
	149	#ifdef EMU_C68K\r
5e89f0f5	150	CycloneReset(&PicoCpuCM68k);\r
cc68a136	151	#endif\r
cc68a136	152	#ifdef EMU_M68K\r
3aa1e148	153	m68k_set_context(&PicoCpuMM68k); // if we ever reset m68k, we always need it's context to be set\r
2d0b15bb	154	m68ki_cpu.sp[0]=0;\r
2d0b15bb	155	m68k_set_irq(0);\r
b837b69b	156	m68k_pulse_reset();\r
99464b62	157	REG_USP = 0; // ?\r
cc68a136	158	#endif\r
70357ce5	159	#ifdef EMU_F68K\r
70357ce5	160	{\r
3aa1e148	161	g_m68kcontext = &PicoCpuFM68k;\r
03e4f2a3	162	fm68k_reset();\r
70357ce5	163	}\r
70357ce5	164	#endif\r
cc68a136	165	\r
	166	return 0;\r
	167	}\r
	168	\r
5f9a0d16	169	void SekStepM68k(void)\r
	170	{\r
	171	SekCycleAim=SekCycleCnt+1;\r
	172	#if defined(EMU_CORE_DEBUG)\r
	173	SekCycleCnt+=CM_compareRun(1, 0);\r
	174	#elif defined(EMU_C68K)\r
	175	PicoCpuCM68k.cycles=1;\r
	176	CycloneRun(&PicoCpuCM68k);\r
	177	SekCycleCnt+=1-PicoCpuCM68k.cycles;\r
	178	#elif defined(EMU_M68K)\r
	179	SekCycleCnt+=m68k_execute(1);\r
	180	#elif defined(EMU_F68K)\r
99ade2ee	181	SekCycleCnt+=fm68k_emulate(1, 0);\r
5f9a0d16	182	#endif\r
5f9a0d16	183	}\r
cc68a136	184	\r
eff55556	185	PICO_INTERNAL void SekSetRealTAS(int use_real)\r
2433f409	186	{\r
	187	#ifdef EMU_C68K\r
	188	CycloneSetRealTAS(use_real);\r
	189	#endif\r
70357ce5	190	#ifdef EMU_F68K\r
	191	// TODO\r
	192	#endif\r
2433f409	193	}\r
2433f409	194	\r
b4db550e	195	// Pack the cpu into a common format:\r
	196	// XXX: rename\r
	197	PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub)\r
	198	{\r
	199	unsigned int pc=0;\r
	200	\r
	201	#if defined(EMU_C68K)\r
	202	struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
	203	memcpy(cpu,context->d,0x40);\r
	204	pc=context->pc-context->membase;\r
	205	(unsigned int )(cpu+0x44)=CycloneGetSr(context);\r
	206	(unsigned int )(cpu+0x48)=context->osp;\r
	207	cpu[0x4c] = context->irq;\r
	208	cpu[0x4d] = context->state_flags & 1;\r
	209	#elif defined(EMU_M68K)\r
	210	void *oldcontext = m68ki_cpu_p;\r
	211	m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
	212	memcpy(cpu,m68ki_cpu_p->dar,0x40);\r
	213	pc=m68ki_cpu_p->pc;\r
	214	(unsigned int )(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r
	215	(unsigned int )(cpu+0x48)=m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET];\r
	216	cpu[0x4c] = CPU_INT_LEVEL>>8;\r
	217	cpu[0x4d] = CPU_STOPPED;\r
	218	m68k_set_context(oldcontext);\r
	219	#elif defined(EMU_F68K)\r
	220	M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
	221	memcpy(cpu,context->dreg,0x40);\r
	222	pc=context->pc;\r
	223	(unsigned int )(cpu+0x44)=context->sr;\r
	224	(unsigned int )(cpu+0x48)=context->asp;\r
	225	cpu[0x4c] = context->interrupts[0];\r
	226	cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;\r
	227	#endif\r
	228	\r
6a98f03e	229	(unsigned int )(cpu+0x40) = pc;\r
ae214f1c	230	(unsigned int )(cpu+0x50) =\r
ae214f1c	231	is_sub ? SekCycleCntS68k : SekCycleCnt;\r
b4db550e	232	}\r
	233	\r
	234	PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)\r
	235	{\r
	236	#if defined(EMU_C68K)\r
	237	struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
	238	CycloneSetSr(context, (unsigned int )(cpu+0x44));\r
	239	context->osp=(unsigned int )(cpu+0x48);\r
	240	memcpy(context->d,cpu,0x40);\r
	241	context->membase = 0;\r
	242	context->pc = (unsigned int )(cpu+0x40);\r
	243	CycloneUnpack(context, NULL); // rebase PC\r
	244	context->irq = cpu[0x4c];\r
	245	context->state_flags = 0;\r
	246	if (cpu[0x4d])\r
	247	context->state_flags \|= 1;\r
	248	#elif defined(EMU_M68K)\r
	249	void *oldcontext = m68ki_cpu_p;\r
	250	m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
	251	m68k_set_reg(M68K_REG_SR, (unsigned int )(cpu+0x44));\r
	252	memcpy(m68ki_cpu_p->dar,cpu,0x40);\r
	253	m68ki_cpu_p->pc=(unsigned int )(cpu+0x40);\r
	254	m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET]=(unsigned int )(cpu+0x48);\r
	255	CPU_INT_LEVEL = cpu[0x4c] << 8;\r
	256	CPU_STOPPED = cpu[0x4d];\r
	257	m68k_set_context(oldcontext);\r
	258	#elif defined(EMU_F68K)\r
	259	M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
	260	memcpy(context->dreg,cpu,0x40);\r
	261	context->pc =(unsigned int )(cpu+0x40);\r
	262	context->sr =(unsigned int )(cpu+0x44);\r
	263	context->asp=(unsigned int )(cpu+0x48);\r
	264	context->interrupts[0] = cpu[0x4c];\r
	265	context->execinfo &= ~FM68K_HALTED;\r
	266	if (cpu[0x4d]&1) context->execinfo \|= FM68K_HALTED;\r
	267	#endif\r
ae214f1c	268	if (is_sub)\r
	269	SekCycleCntS68k = (unsigned int )(cpu+0x50);\r
	270	else\r
	271	SekCycleCnt = (unsigned int )(cpu+0x50);\r
b4db550e	272	}\r
b4db550e	273	\r
5f9a0d16	274	\r
053fd9b4	275	/* idle loop detection, not to be used in CD mode */\r
053fd9b4	276	#ifdef EMU_C68K\r
d4d62665	277	#include "cpu/cyclone/tools/idle.h"\r
053fd9b4	278	#endif\r
053fd9b4	279	\r
488c0bbf	280	static unsigned short **idledet_ptrs = NULL;\r
053fd9b4	281	static int idledet_count = 0, idledet_bads = 0;\r
0219d379	282	static int idledet_start_frame = 0;\r
053fd9b4	283	\r
5ed2a20e	284	#if 0\r
	285	#define IDLE_STATS 1\r
	286	unsigned int idlehit_addrs[128], idlehit_counts[128];\r
	287	\r
	288	void SekRegisterIdleHit(unsigned int pc)\r
	289	{\r
	290	int i;\r
	291	for (i = 0; i < 127 && idlehit_addrs[i]; i++) {\r
	292	if (idlehit_addrs[i] == pc) {\r
	293	idlehit_counts[i]++;\r
	294	return;\r
	295	}\r
	296	}\r
	297	idlehit_addrs[i] = pc;\r
	298	idlehit_counts[i] = 1;\r
	299	idlehit_addrs[i+1] = 0;\r
	300	}\r
	301	#endif\r
	302	\r
053fd9b4	303	void SekInitIdleDet(void)\r
053fd9b4	304	{\r
8f80007b	305	unsigned short **tmp;\r
8f80007b	306	tmp = realloc(idledet_ptrs, 0x200 * sizeof(tmp[0]));\r
053fd9b4	307	if (tmp == NULL) {\r
488c0bbf	308	free(idledet_ptrs);\r
488c0bbf	309	idledet_ptrs = NULL;\r
053fd9b4	310	}\r
053fd9b4	311	else\r
488c0bbf	312	idledet_ptrs = tmp;\r
053fd9b4	313	idledet_count = idledet_bads = 0;\r
053fd9b4	314	idledet_start_frame = Pico.m.frame_count + 360;\r
5ed2a20e	315	#ifdef IDLE_STATS\r
	316	idlehit_addrs[0] = 0;\r
	317	#endif\r
053fd9b4	318	\r
053fd9b4	319	#ifdef EMU_C68K\r
	320	CycloneInitIdle();\r
	321	#endif\r
c060a9ab	322	#ifdef EMU_F68K\r
99ade2ee	323	fm68k_emulate(0, 1);\r
c060a9ab	324	#endif\r
053fd9b4	325	}\r
053fd9b4	326	\r
0219d379	327	int SekIsIdleReady(void)\r
	328	{\r
	329	return (Pico.m.frame_count >= idledet_start_frame);\r
	330	}\r
	331	\r
053fd9b4	332	int SekIsIdleCode(unsigned short *dst, int bytes)\r
053fd9b4	333	{\r
8187ba84	334	// printf("SekIsIdleCode %04x %i\n", *dst, bytes);\r
053fd9b4	335	switch (bytes)\r
053fd9b4	336	{\r
5ed2a20e	337	case 2:\r
	338	if ((*dst & 0xf000) != 0x6000) // not another branch\r
	339	return 1;\r
	340	break;\r
053fd9b4	341	case 4:\r
0219d379	342	if ( (*dst & 0xff3f) == 0x4a38 \|\| // tst.x ($xxxx.w); tas ($xxxx.w)\r
	343	(*dst & 0xc1ff) == 0x0038 \|\| // move.x ($xxxx.w), dX\r
	344	(*dst & 0xf13f) == 0xb038) // cmp.x ($xxxx.w), dX\r
	345	return 1;\r
	346	if (PicoAHW & (PAHW_MCD\|PAHW_32X))\r
	347	break;\r
	348	// with no addons, there should be no need to wait\r
	349	// for byte change anywhere\r
	350	if ( (*dst & 0xfff8) == 0x4a10 \|\| // tst.b ($aX)\r
	351	(*dst & 0xfff8) == 0x4a28) // tst.b ($xxxx,a0)\r
053fd9b4	352	return 1;\r
	353	break;\r
	354	case 6:\r
b0677887	355	if ( ((dst[1] & 0xe0) == 0xe0 && ( // RAM and\r
	356	*dst == 0x4a39 \|\| // tst.b ($xxxxxxxx)\r
	357	*dst == 0x4a79 \|\| // tst.w ($xxxxxxxx)\r
	358	*dst == 0x4ab9 \|\| // tst.l ($xxxxxxxx)\r
	359	(*dst & 0xc1ff) == 0x0039 \|\| // move.x ($xxxxxxxx), dX\r
	360	(*dst & 0xf13f) == 0xb039))\|\|// cmp.x ($xxxxxxxx), dX\r
	361	*dst == 0x0838 \|\| // btst $X, ($xxxx.w) [6 byte op]\r
	362	(*dst & 0xffbf) == 0x0c38) // cmpi.{b,w} $X, ($xxxx.w)\r
053fd9b4	363	return 1;\r
	364	break;\r
	365	case 8:\r
b0677887	366	if ( ((dst[2] & 0xe0) == 0xe0 && ( // RAM and\r
	367	*dst == 0x0839 \|\| // btst $X, ($xxxxxxxx.w) [8 byte op]\r
	368	(*dst & 0xffbf) == 0x0c39))\|\|// cmpi.{b,w} $X, ($xxxxxxxx)\r
	369	*dst == 0x0cb8) // cmpi.l $X, ($xxxx.w)\r
053fd9b4	370	return 1;\r
	371	break;\r
	372	case 12:\r
0219d379	373	if (PicoAHW & (PAHW_MCD\|PAHW_32X))\r
	374	break;\r
	375	if ( (*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX\r
b0677887	376	(dst[1]&0xf100) == 0x0000 && // arithmetic\r
b0677887	377	(dst[3]&0xf100) == 0x0000) // arithmetic\r
053fd9b4	378	return 1;\r
	379	break;\r
	380	}\r
	381	\r
	382	return 0;\r
	383	}\r
	384	\r
5ed2a20e	385	int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)\r
053fd9b4	386	{\r
5ed2a20e	387	int is_main68k = 1;\r
488c0bbf	388	u16 *target;\r
	389	uptr v;\r
	390	\r
5ed2a20e	391	#if defined(EMU_C68K)\r
	392	struct Cyclone *cyc = ctx;\r
	393	is_main68k = cyc == &PicoCpuCM68k;\r
	394	pc -= cyc->membase;\r
	395	#elif defined(EMU_F68K)\r
	396	is_main68k = ctx == &PicoCpuFM68k;\r
053fd9b4	397	#endif\r
053fd9b4	398	pc &= ~0xff000000;\r
0219d379	399	if (!(newop&0x200))\r
5ed2a20e	400	elprintf(EL_IDLE, "idle: patch %06x %04x %04x %c %c #%i", pc, oldop, newop,\r
	401	(newop&0x200)?'n':'y', is_main68k?'m':'s', idledet_count);\r
	402	\r
488c0bbf	403	// XXX: probably shouldn't patch RAM too\r
	404	v = m68k_read16_map[pc >> M68K_MEM_SHIFT];\r
	405	if (!(v & 0x80000000))\r
	406	target = (u16 *)((v << 1) + pc);\r
	407	else {\r
	408	if (++idledet_bads > 128)\r
	409	return 2; // remove detector\r
053fd9b4	410	return 1; // don't patch\r
	411	}\r
	412	\r
	413	if (idledet_count >= 0x200 && (idledet_count & 0x1ff) == 0) {\r
8f80007b	414	unsigned short **tmp;\r
8f80007b	415	tmp = realloc(idledet_ptrs, (idledet_count+0x200) * sizeof(tmp[0]));\r
488c0bbf	416	if (tmp == NULL)\r
	417	return 1;\r
	418	idledet_ptrs = tmp;\r
053fd9b4	419	}\r
053fd9b4	420	\r
488c0bbf	421	idledet_ptrs[idledet_count++] = target;\r
b0677887	422	\r
053fd9b4	423	return 0;\r
	424	}\r
	425	\r
	426	void SekFinishIdleDet(void)\r
	427	{\r
2b15cea8	428	if (idledet_count < 0)\r
2b15cea8	429	return;\r
053fd9b4	430	#ifdef EMU_C68K\r
053fd9b4	431	CycloneFinishIdle();\r
c060a9ab	432	#endif\r
c060a9ab	433	#ifdef EMU_F68K\r
99ade2ee	434	fm68k_emulate(0, 2);\r
053fd9b4	435	#endif\r
	436	while (idledet_count > 0)\r
	437	{\r
488c0bbf	438	unsigned short *op = idledet_ptrs[--idledet_count];\r
053fd9b4	439	if ((*op & 0xfd00) == 0x7100)\r
	440	op &= 0xff, op \|= 0x6600;\r
	441	else if ((*op & 0xfd00) == 0x7500)\r
	442	op &= 0xff, op \|= 0x6700;\r
	443	else if ((*op & 0xfd00) == 0x7d00)\r
	444	op &= 0xff, op \|= 0x6000;\r
	445	else\r
	446	elprintf(EL_STATUS\|EL_IDLE, "idle: don't know how to restore %04x", *op);\r
	447	}\r
2b15cea8	448	idledet_count = -1;\r
053fd9b4	449	}\r
	450	\r
	451	\r
12da51c2	452	#if defined(CPU_CMP_R) \|\| defined(CPU_CMP_W)\r
	453	#include "debug.h"\r
	454	\r
	455	struct ref_68k {\r
	456	u32 dar[16];\r
	457	u32 pc;\r
	458	u32 sr;\r
	459	u32 cycles;\r
	460	u32 pc_prev;\r
	461	};\r
	462	struct ref_68k ref_68ks[2];\r
	463	static int current_68k;\r
	464	\r
	465	void SekTrace(int is_s68k)\r
	466	{\r
	467	struct ref_68k *x68k = &ref_68ks[is_s68k];\r
	468	u32 pc = is_s68k ? SekPcS68k : SekPc;\r
	469	u32 sr = is_s68k ? SekSrS68k : SekSr;\r
	470	u32 cycles = is_s68k ? SekCycleCntS68k : SekCycleCnt;\r
	471	u32 r;\r
	472	u8 cmd;\r
	473	#ifdef CPU_CMP_W\r
	474	int i;\r
	475	\r
	476	if (is_s68k != current_68k) {\r
	477	current_68k = is_s68k;\r
	478	cmd = CTL_68K_SLAVE \| current_68k;\r
	479	tl_write(&cmd, sizeof(cmd));\r
	480	}\r
	481	if (pc != x68k->pc) {\r
	482	x68k->pc = pc;\r
	483	tl_write_uint(CTL_68K_PC, x68k->pc);\r
	484	}\r
	485	if (sr != x68k->sr) {\r
	486	x68k->sr = sr;\r
	487	tl_write_uint(CTL_68K_SR, x68k->sr);\r
	488	}\r
	489	for (i = 0; i < 16; i++) {\r
	490	r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
	491	if (r != x68k->dar[i]) {\r
	492	x68k->dar[i] = r;\r
	493	tl_write_uint(CTL_68K_R + i, r);\r
	494	}\r
	495	}\r
	496	tl_write_uint(CTL_68K_CYCLES, cycles);\r
	497	#else\r
	498	int i, bad = 0;\r
	499	\r
	500	while (1)\r
	501	{\r
	502	int ret = tl_read(&cmd, sizeof(cmd));\r
	503	if (ret == 0) {\r
	504	elprintf(EL_STATUS, "EOF");\r
	505	exit(1);\r
	506	}\r
	507	switch (cmd) {\r
	508	case CTL_68K_SLAVE:\r
	509	case CTL_68K_SLAVE + 1:\r
	510	current_68k = cmd & 1;\r
	511	break;\r
	512	case CTL_68K_PC:\r
	513	tl_read_uint(&x68k->pc);\r
	514	break;\r
	515	case CTL_68K_SR:\r
516	tl_read_uint(&x68k->sr);\r
517	break;\r
518	case CTL_68K_CYCLES:\r
519	tl_read_uint(&x68k->cycles);\r
520	goto breakloop;\r
521	default:\r
522	if (CTL_68K_R <= cmd && cmd < CTL_68K_R + 0x10)\r
523	tl_read_uint(&x68k->dar[cmd - CTL_68K_R]);\r
524	else\r
525	elprintf(EL_STATUS, "invalid cmd: %02x", cmd);\r
526	}\r
527	}\r
528	\r
529	breakloop:\r
530	if (is_s68k != current_68k) {\r
531	printf("bad 68k: %d %d\n", is_s68k, current_68k);\r
532	bad = 1;\r
533	}\r
534	if (cycles != x68k->cycles) {\r
535	printf("bad cycles: %u %u\n", cycles, x68k->cycles);\r
536	bad = 1;\r
537	}\r
538	if ((pc ^ x68k->pc) & 0xffffff) {\r
539	printf("bad PC: %08x %08x\n", pc, x68k->pc);\r
540	bad = 1;\r
541	}\r
542	if (sr != x68k->sr) {\r
543	printf("bad SR: %03x %03x\n", sr, x68k->sr);\r
544	bad = 1;\r
545	}\r
546	for (i = 0; i < 16; i++) {\r
547	r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
548	if (r != x68k->dar[i]) {\r
549	printf("bad %c%d: %08x %08x\n", i < 8 ? 'D' : 'A', i & 7,\r
550	r, x68k->dar[i]);\r
551	bad = 1;\r
552	}\r
553	}\r
554	if (bad) {\r
555	for (i = 0; i < 8; i++)\r
556	printf("D%d: %08x A%d: %08x\n", i, x68k->dar[i],\r
557	i, x68k->dar[i + 8]);\r
558	printf("PC: %08x, %08x\n", x68k->pc, x68k->pc_prev);\r
a39743e3	559	printf("SR: %04x\n", x68k->sr);\r
12da51c2	560	\r
	561	PDebugDumpMem();\r
	562	exit(1);\r
	563	}\r
	564	x68k->pc_prev = x68k->pc;\r
	565	#endif\r
	566	}\r
	567	#endif // CPU_CMP_*\r
	568	\r
6cab49fd	569	#if defined(EMU_M68K) && M68K_INSTRUCTION_HOOK == OPT_SPECIFY_HANDLER\r
	570	static unsigned char op_flags[0x400000/2] = { 0, };\r
	571	static int atexit_set = 0;\r
	572	\r
	573	static void make_idc(void)\r
	574	{\r
	575	FILE *f = fopen("idc.idc", "w");\r
	576	int i;\r
	577	if (!f) return;\r
	578	fprintf(f, "#include <idc.idc>\nstatic main() {\n");\r
	579	for (i = 0; i < 0x400000/2; i++)\r
	580	if (op_flags[i] != 0)\r
	581	fprintf(f, " MakeCode(0x%06x);\n", i*2);\r
	582	fprintf(f, "}\n");\r
	583	fclose(f);\r
	584	}\r
	585	\r
	586	void instruction_hook(void)\r
	587	{\r
	588	if (!atexit_set) {\r
	589	atexit(make_idc);\r
	590	atexit_set = 1;\r
	591	}\r
	592	if (REG_PC < 0x400000)\r
	593	op_flags[REG_PC/2] = 1;\r
	594	}\r
	595	#endif\r
12da51c2	596	\r
12da51c2	597	// vim:shiftwidth=2:ts=2:expandtab\r