mirror of
https://github.com/RetroDECK/Supermodel.git
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283 lines
8 KiB
C++
283 lines
8 KiB
C++
/**
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** Supermodel
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** A Sega Model 3 Arcade Emulator.
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** Copyright 2011 Bart Trzynadlowski, Nik Henson
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**
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** This file is part of Supermodel.
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**
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** Supermodel is free software: you can redistribute it and/or modify it under
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** the terms of the GNU General Public License as published by the Free
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** Software Foundation, either version 3 of the License, or (at your option)
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** any later version.
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**
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** Supermodel is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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** more details.
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**
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** You should have received a copy of the GNU General Public License along
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** with Supermodel. If not, see <http://www.gnu.org/licenses/>.
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**/
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/*
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* Turbo68KDebug.cpp
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*/
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#ifdef SUPERMODEL_DEBUGGER
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#include "Turbo68KDebug.h"
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#include <cctype>
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#include <string>
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namespace Debugger
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{
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UINT32 GetSpecialReg(CCPUDebug *cpu, unsigned id)
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{
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switch (id)
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{
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case TBO68K_REG_SP: return (UINT32)turbo68kcontext_68000.a[7];
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case TBO68K_REG_SR: return (UINT32)turbo68kcontext_68000.sr;
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default: return 0;
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}
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}
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bool SetSpecialReg(CCPUDebug *cpu, unsigned id, UINT32 data)
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{
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switch (id)
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{
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case TBO68K_REG_SP: turbo68kcontext_68000.a[7] = data; return true;
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case TBO68K_REG_SR: turbo68kcontext_68000.sr = data; return true;
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default: return false;
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}
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}
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UINT32 GetDataReg(CCPUDebug *cpu, unsigned id)
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{
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return (UINT32)turbo68kcontext_68000.d[id];
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}
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bool SetDataReg(CCPUDebug *cpu, unsigned id, UINT32 data)
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{
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turbo68kcontext_68000.d[id] = data;
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return true;
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}
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UINT32 GetAddressReg(CCPUDebug *cpu, unsigned id)
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{
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return (UINT32)turbo68kcontext_68000.a[id];
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}
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bool SetAddressReg(CCPUDebug *cpu, unsigned id, UINT32 data)
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{
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turbo68kcontext_68000.a[id] = data;
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return true;
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}
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static const char *srGroup = "Special Registers";
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static const char *drGroup = "Data Registers";
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static const char *arGroup = "Address Regsters";
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CTurbo68KDebug::CTurbo68KDebug(const char *name) : C68KDebug(name), m_resetAddr(0)
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{
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// Special registers
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AddPCRegister ("PC", srGroup);
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AddAddrRegister ("SP", srGroup, TBO68K_REG_SP, GetSpecialReg, SetSpecialReg);
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AddStatus32Register("SR", srGroup, TBO68K_REG_SR, "TtSM.210...XNZVC", GetSpecialReg, SetSpecialReg);
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// Data registers
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for (unsigned id = 0; id < 8; id++)
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{
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sprintf(m_drNames[id], "D%u", id);
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AddInt32Register(m_drNames[id], drGroup, id, GetDataReg, SetDataReg);
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}
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// Address registers
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for (unsigned id = 0; id < 8; id++)
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{
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sprintf(m_arNames[id], "A%u", id);
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AddInt32Register(m_arNames[id], arGroup, id, GetAddressReg, SetAddressReg);
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}
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}
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CTurbo68KDebug::~CTurbo68KDebug()
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{
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DetachFromCPU();
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}
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bool __cdecl DebugHandler(TURBO68K_INT32 pc, TURBO68K_INT32 opcode)
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{
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// Return true to let Turbo68K know if PC was changed by user
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return debug->CPUExecute((UINT32)pc, (UINT32)opcode, 1); // TODO - lastCycles
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}
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void __cdecl InterruptHandler(TURBO68K_UINT32 intVec)
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{
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// TODO - is following correct handling of interrupts? - need to check readme file
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if (intVec > 47)
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return;
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else if (intVec >= 25 || intVec < 32)
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{
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debug->CPUException(25);
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debug->CPUInterrupt((UINT16)intVec - 25);
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}
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else
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debug->CPUException((UINT16)intVec);
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if (origIntAckPtr != NULL)
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origIntAckPtr(intVec);
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}
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void CTurbo68KDebug::AttachToCPU()
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{
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if (debug != NULL)
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DetachFromCPU();
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debug = this;
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origDebugPtr = (DebugPtr)turbo68kcontext_68000.Debug;
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origIntAckPtr = (IntAckPtr)turbo68kcontext_68000.InterruptAcknowledge;
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origRead8Regions = (TURBO68K_DATAREGION*)Turbo68KGetReadByte(TURBO68K_NULL);
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origRead16Regions = (TURBO68K_DATAREGION*)Turbo68KGetReadWord(TURBO68K_NULL);
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origRead32Regions = (TURBO68K_DATAREGION*)Turbo68KGetReadLong(TURBO68K_NULL);
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origWrite8Regions = (TURBO68K_DATAREGION*)Turbo68KGetWriteByte(TURBO68K_NULL);
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origWrite16Regions = (TURBO68K_DATAREGION*)Turbo68KGetWriteWord(TURBO68K_NULL);
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origWrite32Regions = (TURBO68K_DATAREGION*)Turbo68KGetWriteLong(TURBO68K_NULL);
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turbo68kcontext_68000.Debug = DebugHandler;
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turbo68kcontext_68000.InterruptAcknowledge = InterruptHandler;
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debugRead8Regions[0].handler = ReadByteDebug;
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debugRead16Regions[0].handler = ReadWordDebug;
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debugRead32Regions[0].handler = ReadLongDebug;
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debugWrite8Regions[0].handler = WriteByteDebug;
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debugWrite16Regions[0].handler = WriteWordDebug;
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debugWrite32Regions[0].handler = WriteLongDebug;
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Turbo68KSetReadByte(debugRead8Regions, TURBO68K_NULL);
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Turbo68KSetReadWord(debugRead16Regions, TURBO68K_NULL);
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Turbo68KSetReadLong(debugRead32Regions, TURBO68K_NULL);
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Turbo68KSetWriteByte(debugWrite8Regions, TURBO68K_NULL);
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Turbo68KSetWriteWord(debugWrite16Regions, TURBO68K_NULL);
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Turbo68KSetWriteLong(debugWrite32Regions, TURBO68K_NULL);
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// Reset address is held at 0x000004
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m_resetAddr = ReadLongDirect(0x000004);
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}
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void CTurbo68KDebug::DetachFromCPU()
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{
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if (debug == NULL)
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return;
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turbo68kcontext_68000.Debug = origDebugPtr;
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turbo68kcontext_68000.InterruptAcknowledge = origIntAckPtr;
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Turbo68KSetReadByte(origRead8Regions, TURBO68K_NULL);
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Turbo68KSetReadWord(origRead16Regions, TURBO68K_NULL);
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Turbo68KSetReadLong(origRead32Regions, TURBO68K_NULL);
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Turbo68KSetWriteByte(origWrite8Regions, TURBO68K_NULL);
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Turbo68KSetWriteWord(origWrite16Regions, TURBO68K_NULL);
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Turbo68KSetWriteLong(origWrite32Regions, TURBO68K_NULL);
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debug = NULL;
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}
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UINT32 CTurbo68KDebug::GetResetAddr()
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{
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return m_resetAddr;
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}
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UINT32 CTurbo68KDebug::GetSP()
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{
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return (UINT32)turbo68kcontext_68000.a[7];
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}
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bool CTurbo68KDebug::UpdatePC(UINT32 newPC)
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{
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turbo68kcontext_68000.pc = newPC;
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return true;
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}
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bool CTurbo68KDebug::ForceException(CException *ex)
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{
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//switch (ex->code)
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//{
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// TODO
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//}
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return false;
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}
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bool CTurbo68KDebug::ForceInterrupt(CInterrupt *in)
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{
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if (in->code > 6)
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return false;
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//Turbo68KInterrupt(in->code, TURBO64K_AUTOVECTOR);
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//Turbo68KProcessInterrupts(); TODO - call this?
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return false; // TODO
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}
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UINT64 CTurbo68KDebug::ReadMem(UINT32 addr, unsigned dataSize)
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{
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switch (dataSize)
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{
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case 1: return ReadByteDirect(addr);
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case 2: return ReadWordDirect(addr);
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case 4: return ReadLongDirect(addr);
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default: return CCPUDebug::ReadMem(addr, dataSize);
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}
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}
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bool CTurbo68KDebug::WriteMem(UINT32 addr, unsigned dataSize, UINT64 data)
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{
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switch (dataSize)
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{
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case 1: WriteByteDirect(addr, (TURBO68K_UINT8)data); return true;
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case 2: WriteWordDirect(addr, (TURBO68K_UINT16)data); return true;
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case 4: WriteLongDirect(addr, (TURBO68K_UINT32)data); return true;
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default: return CCPUDebug::WriteMem(addr, dataSize, data);
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}
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}
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TURBO68K_UINT8 __cdecl ReadByteDebug(TURBO68K_UINT32 addr)
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{
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TURBO68K_UINT8 data = ReadByteDirect(addr);
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debug->CheckRead8((UINT32)addr, (UINT8)data);
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return data;
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}
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TURBO68K_UINT16 __cdecl ReadWordDebug(TURBO68K_UINT32 addr)
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{
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TURBO68K_UINT16 data = ReadWordDirect(addr);
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debug->CheckRead16((UINT32)addr, (UINT16)data);
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return data;
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}
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TURBO68K_UINT32 __cdecl ReadLongDebug(TURBO68K_UINT32 addr)
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{
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TURBO68K_UINT32 data = ReadLongDirect(addr);
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debug->CheckRead32((UINT32)addr, (UINT32)data);
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return data;
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}
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void __cdecl WriteByteDebug(TURBO68K_UINT32 addr, TURBO68K_UINT8 data)
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{
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WriteByteDirect(addr, data);
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debug->CheckWrite8((UINT32)addr, (UINT8)data);
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}
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void __cdecl WriteWordDebug(TURBO68K_UINT32 addr, TURBO68K_UINT16 data)
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{
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WriteWordDirect(addr, data);
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debug->CheckWrite16((UINT32)addr, (UINT16)data);
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}
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void __cdecl WriteLongDebug(TURBO68K_UINT32 addr, TURBO68K_UINT32 data)
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{
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WriteLongDirect(addr, data);
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debug->CheckWrite32((UINT32)addr, (UINT32)data);
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}
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}
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#endif // SUPERMODEL_DEBUGGER
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