/******************************************************************************/
/* Mednafen Sega Saturn Emulation Module                                      */
/******************************************************************************/
/* debug.inc:
**  Copyright (C) 2015-2016 Mednafen Team
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License
** as published by the Free Software Foundation; either version 2
** of the License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation, Inc.,
** 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

#ifdef WANT_DEBUGGER
static struct DBGS
{
 enum { NUMBT = 24 };

 struct
 {
  uint32 from;
  uint32 to;
  uint32 branch_count;
  int exception;	// -1 on no exception.
  unsigned vecnum;
  bool valid;
 } BTEntries[2][NUMBT];

 bool BTEnabled;
 unsigned BTIndex[2];

 struct SS_BPOINT
 {
  uint32 A[2];
 };

 std::vector<SS_BPOINT> BreakPointsRead, BreakPointsWrite, BreakPointsPC;

 void (*CPUHook)(uint32, bool);
 bool CPUHookContinuous;

 bool FoundBPoint;

 uint32 CurPC[2];

 unsigned ActiveCPU;
} DBG;

static void DBG_Break(void)
{
 DBG.FoundBPoint = true;
}

static void DBG_CheckReadBP(unsigned len, uint32 addr)
{
 for(auto const& bp : DBG.BreakPointsRead)
 {
  for(uint32 ta = addr; ta != (addr + len); ta++)	// TODO: Optimize
  {
   if(ta >= bp.A[0] && ta <= bp.A[1])
   {
    DBG.FoundBPoint = true;
    return;
   }
  }
 }
}

static void DBG_CheckWriteBP(unsigned len, uint32 addr)
{
 for(auto const& bp : DBG.BreakPointsWrite)
 {
  for(uint32 ta = addr; ta != (addr + len); ta++)	// TODO: Optimize
  {
   if(ta >= bp.A[0] && ta <= bp.A[1])
   {
    DBG.FoundBPoint = true;
    return;
   }
  }
 }
}

static void GetAddressSpaceBytes(const char *name, uint32 Address, uint32 Length, uint8 *Buffer)
{
 if(!strcmp(name, "physical"))
 {
  while(Length--)
  {
   //Address &= 0xFFFFFFFF;
   //*Buffer = CPU->PeekMem8(Address);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "workraml"))
 {
  while(Length--)
  {
   Address &= 0xFFFFF;
   *Buffer = ne16_rbo_be<uint8>(WorkRAML, Address);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "workramh"))
 {
  while(Length--)
  {
   Address &= 0xFFFFF;
   *Buffer = ne16_rbo_be<uint8>(WorkRAMH, Address);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "scspram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   *Buffer = SOUND_PeekRAM(Address);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "dspprog"))
 {
  while(Length--)
  {
   Address &= 0x3FF;
   *Buffer = SCU_DSP_PeekProgRAM(Address >> 2) >> (((Address & 0x3) ^ 0x3) << 3);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "vdp1vram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   *Buffer = VDP1::PeekVRAM(Address);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "vdp2vram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   *Buffer = VDP2::PeekVRAM(Address);
   Address++;
   Buffer++;
  }
 }
}


static void PutAddressSpaceBytes(const char *name, uint32 Address, uint32 Length, uint32 Granularity, bool hl, const uint8 *Buffer)
{
 if(!strcmp(name, "physical"))
 {
  while(Length--)
  {
   //Address &= 0xFFFFFFFF;
   //CPU->PokeMem8(Address, *Buffer);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "workramh"))
 {
  while(Length--)
  {
   Address &= 0xFFFFF;
   ne16_wbo_be<uint8>(WorkRAMH, Address, *Buffer);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "scspram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   SOUND_PokeRAM(Address, *Buffer);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "vdp1vram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   VDP1::PokeVRAM(Address, *Buffer);
   Address++;
   Buffer++;
  }
 }
 else if(!strcmp(name, "vdp2vram"))
 {
  while(Length--)
  {
   Address &= 0x7FFFF;
   VDP2::PokeVRAM(Address, *Buffer);
   Address++;
   Buffer++;
  }
 }
}


static uint32 DBG_MemPeek(uint32 A, unsigned int bsize, bool hl, bool logical)
{
/*
 uint32 ret = 0;

 for(unsigned int i = 0; i < bsize; i++)
  ret |= CPU->PeekMem8(A + i) << (i * 8);

 return(ret);
*/
 return 0xAA;
}


static MDFN_COLD void DBG_FlushBreakPoints(int type)
{
 if(type == BPOINT_READ)
  DBG.BreakPointsRead.clear();
 else if(type == BPOINT_WRITE)
  DBG.BreakPointsWrite.clear();
 else if(type == BPOINT_PC)
  DBG.BreakPointsPC.clear();
}

static MDFN_COLD void DBG_AddBreakPoint(int type, unsigned int A1, unsigned int A2, bool logical)
{
 DBGS::SS_BPOINT tmp;

 tmp.A[0] = A1;
 tmp.A[1] = A2;

 if(type == BPOINT_READ)
  DBG.BreakPointsRead.push_back(tmp);
 else if(type == BPOINT_WRITE)
  DBG.BreakPointsWrite.push_back(tmp);
 else if(type == BPOINT_PC)
  DBG.BreakPointsPC.push_back(tmp);
}

static void DBG_SetCPUCallback(void (*callb)(uint32 PC, bool bpoint), bool continuous)
{
 DBG.CPUHook = callb;
 DBG.CPUHookContinuous = continuous;
}

static void DBG_EnableBranchTrace(bool enable)
{
 if((DBG.BTEnabled ^ enable) & DBG.BTEnabled)
 {
  for(unsigned which = 0; which < 2; which++)
   for(unsigned i = 0; i < DBGS::NUMBT; i++)
    DBG.BTEntries[which][i].valid = false;
 }

 DBG.BTEnabled = enable;
}

static void DBG_AddBranchTrace(unsigned which, uint32 to, int exception, unsigned vecnum = 0)
{
 const uint32 from = DBG.CurPC[which];
 auto *prevbt = &DBG.BTEntries[which][(DBG.BTIndex[which] + DBGS::NUMBT - 1) % DBGS::NUMBT];

 //if(BTEntries[(BTIndex - 1) & 0xF] == PC) return;

 if(prevbt->from == from && prevbt->to == to && prevbt->exception == exception && prevbt->branch_count < 0xFFFFFFFF && prevbt->valid)
  prevbt->branch_count++;
 else
 {
  auto& bte = DBG.BTEntries[which][DBG.BTIndex[which]];
  bte.from = from;
  bte.to = to;
  bte.exception = exception;
  bte.vecnum = vecnum;
  bte.branch_count = 1;
  bte.valid = true;

  DBG.BTIndex[which] = (DBG.BTIndex[which] + 1) % DBGS::NUMBT;
 }
}

static std::vector<BranchTraceResult> DBG_GetBranchTrace(void)
{
 std::vector<BranchTraceResult> ret;
 BranchTraceResult tmp;

 for(unsigned x = 0; x < DBGS::NUMBT; x++)
 {
  char estr[32];
  const auto* bt = &DBG.BTEntries[DBG.ActiveCPU][(x + DBG.BTIndex[DBG.ActiveCPU]) % DBGS::NUMBT];

  if(!bt->valid)
   continue;

  tmp.count = bt->branch_count;
  trio_snprintf(tmp.from, sizeof(tmp.from), "%08x", bt->from);
  trio_snprintf(tmp.to, sizeof(tmp.to), "%08x", bt->to);

  trio_snprintf(estr, sizeof(estr), "UNK");

  switch(bt->exception)
  {
   case -1:
	estr[0] = 0;
	break;

   case SH7095::EXCEPTION_POWERON:
	trio_snprintf(estr, sizeof(estr), "PRST");
	break;

   case SH7095::EXCEPTION_RESET:
	trio_snprintf(estr, sizeof(estr), "MRST");
	break;

   case SH7095::EXCEPTION_ILLINSTR:
	trio_snprintf(estr, sizeof(estr), "ILL");
	break;

   case SH7095::EXCEPTION_ILLSLOT:
	trio_snprintf(estr, sizeof(estr), "ILLS");
	break;

   case SH7095::EXCEPTION_CPUADDR:
	trio_snprintf(estr, sizeof(estr), "CPUA");
	break;

   case SH7095::EXCEPTION_DMAADDR:
	trio_snprintf(estr, sizeof(estr), "DMAA");
	break;

   case SH7095::EXCEPTION_NMI:
	trio_snprintf(estr, sizeof(estr), "NMI");
	break;

   case SH7095::EXCEPTION_BREAK:
	trio_snprintf(estr, sizeof(estr), "BRK");
	break;

   case SH7095::EXCEPTION_TRAP:
	trio_snprintf(estr, sizeof(estr), "TRAP%02X", bt->vecnum);
	break;

   case SH7095::EXCEPTION_INT:
	trio_snprintf(estr, sizeof(estr), "INT%02X", bt->vecnum);
	break;
  }

  trio_snprintf(tmp.code, sizeof(tmp.code), "%s", estr);

  ret.push_back(tmp);
 }
 return(ret);
}

template<unsigned which>
static void DBG_CPUHandler(const sscpu_timestamp_t timestamp)
{
 const uint32 PC = CPU[which].GetRegister(SH7095::GSREG_PC_ID, NULL, 0);

 if(which != DBG.ActiveCPU)
 {
  DBG.CurPC[which] = PC;
  return;
 }

#if 0
 if(LogFunc)
 {
  static const uint32 addr_mask[8] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x7FFFFFFF, 0x1FFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
  uint32 tpc = PC & addr_mask[PC >> 29];;

  if(MDFN_UNLIKELY(tpc <= 0xC0))
  {
   if(tpc == 0xA0 || tpc == 0xB0 || tpc == 0xC0)
   {
    const uint32 function = CPU->GetRegister(PS_CPU::GSREG_GPR + 9, NULL, 0);

    if(tpc != 0xB0 || function != 0x17)
    {
     char tmp[64];
     trio_snprintf(tmp, sizeof(tmp), "0x%02x:0x%02x", PC & 0xFF, function);
     LogFunc("BIOS", tmp);
    }
   }
  }
 }
#endif

 for(auto& bp : DBG.BreakPointsPC)
 {
  if(PC >= bp.A[0] && PC <= bp.A[1])
  {
   DBG.FoundBPoint = true;
   break;
  }
 }

 CPU[which].CheckRWBreakpoints(DBG_CheckReadBP, DBG_CheckWriteBP);
 //CPU->CheckBreakpoints(CheckCPUBPCallB, CPU->PeekMem32(PC));

 DBG.CPUHookContinuous |= DBG.FoundBPoint;

 if(DBG.CPUHookContinuous && DBG.CPUHook)
 {
  ForceEventUpdates(timestamp);
  DBG.CPUHook(PC, DBG.FoundBPoint);
 }

 DBG.FoundBPoint = false;
 //
 //
 // No, no, this isn't right for dual-CPUs(FIXME):
 DBG.CurPC[which] = CPU[which].GetRegister(SH7095::GSREG_PC_ID, NULL, 0);
}


static bool DBG_NeedCPUHooks(void)
{
 return DBG.BTEnabled || DBG.CPUHook || DBG.BreakPointsPC.size() || DBG.BreakPointsRead.size() || DBG.BreakPointsWrite.size();
}

// TODO: Standard peek functions
static INLINE uint16 DBG_DisPeek16(uint32 A)
{
 return *(uint16*)(SH7095_FastMap[A >> SH7095_EXT_MAP_GRAN_BITS] + A);
}

static INLINE uint32 DBG_DisPeek32(uint32 A)
{
 uint32 ret;

 ret = *(uint16*)(SH7095_FastMap[A >> SH7095_EXT_MAP_GRAN_BITS] + A) << 16;
 A |= 2;
 ret |= *(uint16*)(SH7095_FastMap[A >> SH7095_EXT_MAP_GRAN_BITS] + A) << 0;

 return ret;
}

static void DBG_Disassemble(uint32 &A, uint32 SpecialA, char *TextBuf)
{
 if(A & 0x1)
 {
  strncpy(TextBuf, "UNALIGNED", 256);
  A &= ~0x1;
 }
 else
 {
  uint16 instr;

  if(A == CPU[DBG.ActiveCPU].GetRegister(SH7095::GSREG_PC_ID, NULL, 0))
   instr = CPU[DBG.ActiveCPU].GetRegister(SH7095::GSREG_PID, NULL, 0);
  else if(A == CPU[DBG.ActiveCPU].GetRegister(SH7095::GSREG_PC_IF, NULL, 0))
   instr = CPU[DBG.ActiveCPU].GetRegister(SH7095::GSREG_PIF, NULL, 0);
  else
   instr = DBG_DisPeek16(A);

  SH7095::Disassemble(instr, A + 4, TextBuf, DBG_DisPeek16, DBG_DisPeek32);
 }

 char* tlc = TextBuf;

 while((uint8)*tlc != 0)
 {
  *tlc = tolower(*tlc);
  tlc++;
 }

 A += 2;
}

static MDFN_COLD void DBG_ToggleSyntax(void)
{
 // Right, "syntax". ;)
 DBG.ActiveCPU = !DBG.ActiveCPU;
}
//
//
//

static const RegType DBG_Regs_CPU[] =
{
 { SH7095::GSREG_PC_ID, "PC", "PC (Effective)", 4 },
 { SH7095::GSREG_RPC, "RPC", "PC (Real)", 4 },

 { SH7095::GSREG_PID, "PID", "Pipeline ID Buffer", 4 },
 { SH7095::GSREG_PIF, "PIF", "Pipeline IF Buffer", 4 },

 { SH7095::GSREG_EP, "EP", "Exception Pending", 4 },

 { SH7095::GSREG_R0, "R0", "R0", 4 },
 { SH7095::GSREG_R1, "R1", "R1",  4 },
 { SH7095::GSREG_R2, "R2", "R2",  4 },
 { SH7095::GSREG_R3, "R3", "R3",  4 },
 { SH7095::GSREG_R4, "R4", "R4",  4 },
 { SH7095::GSREG_R5, "R5", "R5",  4 },
 { SH7095::GSREG_R6, "R6", "R6",  4 },
 { SH7095::GSREG_R7, "R7", "R7",  4 },
 { SH7095::GSREG_R8, "R8", "R8",  4 },
 { SH7095::GSREG_R9, "R9", "R9",  4 },
 { SH7095::GSREG_R10, "R10", "R10",  4 },
 { SH7095::GSREG_R11, "R11", "R11",  4 },
 { SH7095::GSREG_R12, "R12", "R12",  4 },
 { SH7095::GSREG_R13, "R13", "R13",  4 },
 { SH7095::GSREG_R14, "R14", "R14",  4 },
 { SH7095::GSREG_R15, "R15", "R15/Stack Pointer", 4 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_SR, "SR", "Status Register", 4 },
 { SH7095::GSREG_GBR, "GBR", "Global Base Register", 4 },
 { SH7095::GSREG_VBR, "VBR", "Vector Base Register", 4 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_MACH, "MACH", "Multiply-and-Accumulate High", 4 },
 { SH7095::GSREG_MACL, "MACL", "Multiply-and-Accumulate Low", 4 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_PR, "PR", "Procedure Register", 4 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_NMIL, "NMIL", "NMI Level(Input)", 1 },
 { SH7095::GSREG_IRL, "IRL", "Interrupt Level(Input)", 1 },
 { SH7095::GSREG_IPRA, "IPRA", "IPRA", 2 },
 { SH7095::GSREG_IPRB, "IPRB", "IPRB", 2 },
 { SH7095::GSREG_VCRWDT, "VCRWDT", "VCRWDT", 2 },
 { SH7095::GSREG_VCRA, "VCRA", "VCRA", 2 },
 { SH7095::GSREG_VCRB, "VCRB", "VCRB", 2 },
 { SH7095::GSREG_VCRC, "VCRC", "VCRC", 2 },
 { SH7095::GSREG_VCRD, "VCRD", "VCRD", 2 },
 { SH7095::GSREG_ICR, "ICR", "ICR", 2 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_DVSR, "DVSR", "Divisor", 4 },
 { SH7095::GSREG_DVDNT, "DVDNT", "DVDNT", 4 },
 { SH7095::GSREG_DVDNTH, "DVDNTH", "DVDNTH", 4 },
 { SH7095::GSREG_DVDNTL, "DVDNTL", "DVDNTL", 4 },
 { SH7095::GSREG_DVDNTHS, "DVDNTHS", "DVDNTH Shadow", 4 },
 { SH7095::GSREG_DVDNTLS, "DVDNTLS", "DVDNTL Shadow", 4 },
 { SH7095::GSREG_VCRDIV, "VCRDIV", "VCRDIV", 2 },
 { SH7095::GSREG_DVCR, "DVCR", "DVCR", 1 },

 { 0, "------", "", 0xFFFF },

 { SH7095::GSREG_WTCSR, "WTCSR", "WTCSR", 1 },
 { SH7095::GSREG_WTCSRM, "WTCSRM", "WTCSRM", 1 },
 { SH7095::GSREG_WTCNT, "WTCNT", "WTCNT", 1 },
 { SH7095::GSREG_RSTCSR, "RSTCSR", "RSTCSR", 1 },
 { SH7095::GSREG_RSTCSRM, "RSTCSRM", "RSTCSRM", 1 },

 { 0, "", "", 0 },
};

static const RegType DBG_Regs_CPUE[] =
{
 { SH7095::GSREG_DMAOR, "DMAOR", "DMAOR", 1 },
 { SH7095::GSREG_DMAORM, "DMAORM", "DMAORM", 1 },

 { 0, "--DMACH0:--", "", 0xFFFF },
 { SH7095::GSREG_DMA0_SAR, "SAR", "SAR", 4 },
 { SH7095::GSREG_DMA0_DAR, "DAR", "DAR", 4 },
 { SH7095::GSREG_DMA0_TCR, "TCR", "TCR", 4 },
 { SH7095::GSREG_DMA0_CHCR, "CHCR", "CHCR", 2 },
 { SH7095::GSREG_DMA0_CHCRM, "CHCRM", "CHCRM", 2 },
 { SH7095::GSREG_DMA0_VCR, "VCR", "VCR", 1 },
 { SH7095::GSREG_DMA0_DRCR, "DRCR", "DRCR", 1 },

 { 0, "--DMACH1:--", "", 0xFFFF },
 { SH7095::GSREG_DMA1_SAR, "SAR", "SAR", 4 },
 { SH7095::GSREG_DMA1_DAR, "DAR", "DAR", 4 },
 { SH7095::GSREG_DMA1_TCR, "TCR", "TCR", 4 },
 { SH7095::GSREG_DMA1_CHCR, "CHCR", "CHCR", 2 },
 { SH7095::GSREG_DMA1_CHCRM, "CHCRM", "CHCRM", 2 },
 { SH7095::GSREG_DMA1_VCR, "VCR", "VCR", 1 },
 { SH7095::GSREG_DMA1_DRCR, "DRCR", "DRCR", 1 },

 { 0, "-----------", "", 0xFFFF },

 { SH7095::GSREG_FRC, "FRC", "FRC", 2 },
 { SH7095::GSREG_OCR0, "OCRA", "OCRA", 2 },
 { SH7095::GSREG_OCR1, "OCRB", "OCRB", 2 },
 { SH7095::GSREG_FICR, "FICR", "FICR", 2 },
 { SH7095::GSREG_TIER, "TIER", "TIER", 1 },
 { SH7095::GSREG_FTCSR, "FTCSR", "FTCSR", 1 },
 { SH7095::GSREG_FTCSRM, "FTCSRM", "FTCSRM", 1 },
 { SH7095::GSREG_TCR, "TCR", "TCR", 1 },
 { SH7095::GSREG_TOCR, "TOCR", "TOCR", 1 },
 { SH7095::GSREG_RWT, "RWT", "R/W Temp", 1 },

 { 0, "", "", 0 },
};

static uint32 DBG_GetRegister_CPU(const unsigned int id, char* special, const uint32 special_len)
{
 return CPU[DBG.ActiveCPU].GetRegister(id, special, special_len);
}

static MDFN_COLD void DBG_SetRegister_CPU(const unsigned int id, uint32 value)
{
 CPU[DBG.ActiveCPU].SetRegister(id, value);
}

static const RegGroupType DBG_RegGroup_CPU =
{
 NULL,
 DBG_Regs_CPU,
 DBG_GetRegister_CPU,
 DBG_SetRegister_CPU
};

static const RegGroupType DBG_RegGroup_CPUE =
{
 NULL,
 DBG_Regs_CPUE,
 DBG_GetRegister_CPU,
 DBG_SetRegister_CPU
};


static const RegType DBG_Regs_SCU[] =
{
 { SCU_GSREG_ILEVEL, "ILevel", "IRL Output to SH2-M", 1 },
 { SCU_GSREG_IVEC, "IVec", "Pending IRQ Vector Number", 1 },

 { 0, "------", "", 0xFFFF },

 { SCU_GSREG_IASSERTED, "IAss", "Status of Input IRQ Lines", 4 },
 { SCU_GSREG_IPENDING, "IPend", "Pending IRQs", 4 },
 { SCU_GSREG_IMASK, "IMask", "IRQ Mask", 2 },

 { 0, "------", "", 0xFFFF },

 { SCU_GSREG_TENBL, "TENBL", "Timers Enable", 0x100 | 1 },

 { SCU_GSREG_T0CNT, "T0CNT", "Timer0 Counter", 0x100 | 10 },
 { SCU_GSREG_T0CMP, "T0CMP", "Timer0 Compare Value", 0x100 | 10 },
 { SCU_GSREG_T0MET, "T0MET", "Timer0 Met", 0x100 | 1 },

 { SCU_GSREG_T1RLV, "T1RLV", "Timer1 Reload Value", 0x100 | 9 },
 { SCU_GSREG_T1CNT, "T1CNT", "Timer1 Counter", 0x100 | 9 },
 { SCU_GSREG_T1MOD, "T1MOD", "Timer1 Mode", 0x100 | 1 },
 { SCU_GSREG_T1MET, "T1MET", "Timer1 Met", 0x100 | 1 },

 { 0, "--DSP:--", "", 0xFFFF },

 { SCU_GSREG_DSP_EXEC, "EXEC", "Executing", 0x100 | 1 },
 { SCU_GSREG_DSP_PAUSE, "PAUSE", "Paused", 0x100 | 1 },
 { SCU_GSREG_DSP_PC, "PC", "Program Counter", 1 },
 { SCU_GSREG_DSP_END, "END", "End Flag", 0x100 | 1 },

 { 0, "", "", 0 },
};

static const RegGroupType DBG_RegGroup_SCU =
{
 NULL,
 DBG_Regs_SCU,
 SCU_GetRegister,
 SCU_SetRegister
};

//
//

static const RegType DBG_Regs_VDP1_VDP2_SCSP[] =
{
 { 0, "------", "", 0xFFFF },

 { (1 << 16) | VDP2::GSREG_LINE, "Line", "Line", 2 },
 { (1 << 16) | VDP2::GSREG_DON, "DON", "Display On", 0x100 | 1 },
 { (1 << 16) | VDP2::GSREG_BM, "BM", "Border Mode", 0x100 | 1 },
 { (1 << 16) | VDP2::GSREG_IM, "IM", "Interlace Mode", 0x100 | 2 },
 { (1 << 16) | VDP2::GSREG_VRES, "VRES", "Vertical Resolution", 0x100 | 2 },
 { (1 << 16) | VDP2::GSREG_HRES, "HRES", "Horizontal Resolution", 0x100 | 3 },

 { 0, "------", "", 0xFFFF },

 { (2 << 16) | SS_SCSP::GSREG_MVOL, "MVOL", "Master Volume", 0x100 | 4 },
 { (2 << 16) | SS_SCSP::GSREG_DAC18B, "DAC18B", "18-bit DAC Enable", 0x100 | 1 },
 { (2 << 16) | SS_SCSP::GSREG_MEM4MB, "Mem4Mb", "4Mb Memory Enable", 0x100 | 1 },
 { (2 << 16) | SS_SCSP::GSREG_RBP, "RBP", "DSP Ringbuffer Base Address", 0x100 | 7 },
 { (2 << 16) | SS_SCSP::GSREG_RBL, "RBL", "DSP Ringbuffer Length", 0x100 | 2 },
 { (2 << 16) | SS_SCSP::GSREG_MSLC, "MSLC", "Slot to Monitor", 0x100 | 5 },

 { 0, "", "", 0 },
};

static uint32 VDP1_VDP2_SCSP_GetRegister(const unsigned id, char* const special, const uint32 special_len)
{
 switch(id >> 16)
 {
  case 0: return 0; //return VDP1::GetRegister((uint16)id, special, special_len);
  case 1: return VDP2::GetRegister((uint16)id, special, special_len);
  case 2: return SOUND_GetSCSPRegister((uint16)id, special, special_len);
 }

 return 0;
}

static void VDP1_VDP2_SCSP_SetRegister(const unsigned id, const uint32 value)
{
 switch(id >> 16)
 {
  case 0: break; //return VDP1::GetRegister((uint16)id, special, special_len);
  case 1: VDP2::SetRegister((uint16)id, value); break;
  case 2: SOUND_SetSCSPRegister((uint16)id, value); break;
 }
}

static const RegGroupType DBG_RegGroup_VDP1_VDP2_SCSP =
{
 NULL,
 DBG_Regs_VDP1_VDP2_SCSP,
 VDP1_VDP2_SCSP_GetRegister,
 VDP1_VDP2_SCSP_SetRegister
};

//
//
//
static void DBG_Init(void) MDFN_COLD;
static void DBG_Init(void)
{
 DBG.ActiveCPU = 0;
 DBG.BTEnabled = false;

 for(unsigned which = 0; which < 2; which++)
 {
  DBG.BTIndex[which] = 0;

  for(unsigned i = 0; i < DBGS::NUMBT; i++)
   DBG.BTEntries[which][i].valid = false;
 }

 DBG.CPUHook = NULL;
 DBG.CPUHookContinuous = false;
 DBG.FoundBPoint = false;

 MDFNDBG_AddRegGroup(&DBG_RegGroup_CPU);
 MDFNDBG_AddRegGroup(&DBG_RegGroup_CPUE);
 MDFNDBG_AddRegGroup(&DBG_RegGroup_SCU);
 MDFNDBG_AddRegGroup(&DBG_RegGroup_VDP1_VDP2_SCSP);
 //
 //
 //
 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "physical", "SH-2 Physical (TODO)", 27);
 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "workraml", "Low Work RAM", 20);
 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "workramh", "High Work RAM", 20);
 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "scspram", "SCSP RAM", 19);

 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "dspprog", "DSP Program RAM", 10);

 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "vdp1vram", "VDP1 VRAM", 19);
 ASpace_Add(GetAddressSpaceBytes, PutAddressSpaceBytes, "vdp2vram", "VDP2 VRAM", 19);
}

static DebuggerInfoStruct DBGInfo
{
 "SJIS",

 2,
 2,

 32,
 27,

 0x06004000,
 ~0U,

 DBG_MemPeek,

 DBG_Disassemble,
 DBG_ToggleSyntax,

 NULL,
 NULL,

 DBG_FlushBreakPoints,
 DBG_AddBreakPoint,
 DBG_SetCPUCallback,

 DBG_EnableBranchTrace,
 DBG_GetBranchTrace,

 NULL,
 NULL,

 NULL,
 NULL,
};
#else
template<unsigned which>
static INLINE void DBG_CPUHandler(const sscpu_timestamp_t timestamp) { }
static INLINE void DBG_AddBranchTrace(unsigned which, uint32 to, int exception, unsigned vecnum = 0) { }
static INLINE bool DBG_NeedCPUHooks(void) { return false; } 
static INLINE void DBG_Init(void) { }
#endif