mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-23 06:15:37 +00:00
97ac46c82a
- Added CPrintBreakpoint Changes to console-based debugger: - Added new scp command and tidied up some other commands - Tidied up event logging - Sorted commands into common groups - Added ReadMe.txt help file
933 lines
25 KiB
C++
933 lines
25 KiB
C++
#ifdef SUPERMODEL_DEBUGGER
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#ifndef INCLUDED_CPUDEBUG_H
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#define INCLUDED_CPUDEBUG_H
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#include <stdio.h>
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#include <vector>
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#include <algorithm>
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using namespace std;
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#include "Types.h"
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#include "CodeAnalyser.h"
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#include "AddressTable.h"
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#include "Breakpoint.h"
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#include "Debugger.h"
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#include "Exception.h"
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#include "Interrupt.h"
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#include "IO.h"
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#include "Register.h"
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#include "Watch.h"
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#ifdef DEBUGGER_HASBLOCKFILE
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#include "BlockFile.h"
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#endif // DEBUGGER_HASBLOCKFILE
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#define MAX_EXCEPTIONS 255
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#define MAX_INTERRUPTS 255
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#define MAX_IOPORTS 255
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namespace Debugger
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{
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class CRegion;
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class CLabel;
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class CComment;
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enum EStepMode
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{
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StepInto = 0,
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StepOver,
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StepOut
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};
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enum EOpFlags
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{
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NormalOp = 0,
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JumpSimple = 1,
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JumpLoop = 2,
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JumpSub = 4,
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JumpEx = 8,
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ReturnSub = 16,
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ReturnEx = 32,
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HaltExec = 64,
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Relative = 128,
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Conditional = 256,
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NotFixed = 512
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};
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/*
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* Base class that facilitates the debugging of a particular emulated CPU.
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* It holds the debugging hooks that the CPU should call to implement debugging.
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* Also contains CPU-specific information and provides access to CPU-specific objects such as CRegister, CException etc.
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*/
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class CCPUDebug
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{
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friend class CDebugger;
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private:
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bool m_break;
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bool m_userBreak;
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bool m_step;
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EStepMode m_stepMode;
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bool m_stepBreak;
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bool m_steppingOver;
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UINT32 m_stepOverAddr;
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bool m_steppingOut;
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UINT32 m_stepOutAddr;
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int m_count;
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bool m_until;
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UINT32 m_untilAddr;
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CException *m_exArray[MAX_EXCEPTIONS];
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CInterrupt *m_intArray[MAX_INTERRUPTS];
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CPortIO *m_portArray[MAX_IOPORTS];
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CAddressTable *m_mappedIOTable;
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CAddressTable *m_memWatchTable;
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CAddressTable *m_bpTable;
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int m_numRegMons;
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CRegMonitor **m_regMonArray;
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bool ShiftAddress(UINT32 &addr, unsigned &dataSize, UINT64 &data, CAddressRef *ref);
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void CheckRead(UINT32 addr, unsigned dataSize, UINT64 data);
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void CheckWrite(UINT32 addr, unsigned dataSize, UINT64 data);
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void MemWatchTriggered(CWatch *watch, UINT32 addr, unsigned dataSize, UINT64 data, bool isRead);
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void IOWatchTriggered(CWatch *watch, CIO *io, UINT64 data, bool isRead);
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void AttachToDebugger(CDebugger *theDebugger);
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void DetachFromDebugger(CDebugger *theDebugger);
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protected:
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CCodeAnalyser *m_analyser;
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bool m_stateUpdated;
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CException *m_exRaised;
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CException *m_exTrapped;
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CInterrupt *m_intRaised;
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CInterrupt *m_intTrapped;
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CBreakpoint *m_bpReached;
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CWatch *m_memWatchTriggered;
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CWatch *m_ioWatchTriggered;
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CRegMonitor *m_regMonTriggered;
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CCPUDebug(const char *cpuName, UINT8 cpuMinInstrLen, UINT8 cpuMaxInstrLen, bool cpuBigEndian, UINT8 cpuMemBusWidth, UINT8 cpuMaxMnemLen);
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//
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// Methods to define CPU features, such as registers, exceptions and interrupts
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//
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CPCRegister *AddPCRegister(const char *name, const char *group);
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CAddrRegister *AddAddrRegister(const char *name, const char *group, unsigned id, GetInt32FPtr getFunc, SetInt32FPtr setFunc = NULL);
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CIntRegister *AddInt8Register(const char *name, const char *group, unsigned id, GetInt8FPtr getFunc, SetInt8FPtr setFunc = NULL);
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CIntRegister *AddInt16Register(const char *name, const char *group, unsigned id, GetInt16FPtr getFunc, SetInt16FPtr setFunc = NULL);
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CIntRegister *AddInt32Register(const char *name, const char *group, unsigned id, GetInt32FPtr getFunc, SetInt32FPtr setFunc = NULL);
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CIntRegister *AddInt64Register(const char *name, const char *group, unsigned id, GetInt64FPtr getFunc, SetInt64FPtr setFunc = NULL);
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CStatusRegister *AddStatus8Register(const char *name, const char *group, unsigned id, const char *bitStr, GetInt8FPtr getFunc, SetInt8FPtr setFunc = NULL);
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CStatusRegister *AddStatus16Register(const char *name, const char *group, unsigned id, const char *bitStr, GetInt16FPtr getFunc, SetInt16FPtr setFunc = NULL);
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CStatusRegister *AddStatus32Register(const char *name, const char *group, unsigned id, const char *bitStr, GetInt32FPtr getFunc, SetInt32FPtr setFunc = NULL);
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CFPointRegister *AddFPointRegister(const char *name, const char *group, unsigned id, GetFPointFPtr getFunc, SetFPointFPtr setFunc = NULL);
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CException *AddException(const char *id, UINT16 code, const char *name);
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CInterrupt *AddInterrupt(const char *id, UINT16 code, const char *name);
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//
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// Protected virtual methods for sub-class to implement
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//
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virtual bool UpdatePC(UINT32 pc) = 0;
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virtual bool ForceException(CException *ex) = 0;
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virtual bool ForceInterrupt(CInterrupt *in) = 0;
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public:
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const char *name;
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const UINT8 minInstrLen;
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const UINT8 maxInstrLen;
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const bool bigEndian;
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const UINT8 memBusWidth;
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const UINT8 maxMnemLen;
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bool enabled;
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EFormat addrFmt;
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EFormat portFmt;
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EFormat dataFmt;
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CDebugger *debugger;
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UINT16 numExCodes;
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UINT16 numIntCodes;
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UINT16 numPorts;
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UINT32 memSize;
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UINT64 instrCount;
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UINT32 pc;
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UINT32 opcode;
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vector<CRegister*> regs;
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vector<CException*> exceps;
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vector<CInterrupt*> inters;
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vector<CIO*> ios;
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// TODO - should use map<UINT32,T*> for T=CRegion,CLabel&CComment so that look-ups via address are faster
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vector<CRegion*> regions;
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vector<CLabel*> labels;
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vector<CComment*> comments;
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vector<CWatch*> memWatches;
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vector<CWatch*> ioWatches;
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vector<CBreakpoint*> bps;
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vector<CRegMonitor*> regMons;
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virtual ~CCPUDebug();
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//
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// Methods to define memory layout (must be called before attached to debugger)
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//
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CRegion *AddRegion(UINT32 start, UINT32 end, bool isCode, bool isReadOnly, const char *name);
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CPortIO *AddPortIO(UINT16 portNum, unsigned dataSize, const char *name, const char *group);
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CMappedIO *AddMappedIO(UINT32 addr, unsigned dataSize, const char *name, const char *group);
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//
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// Parsing and formatting methods
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//
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bool ParseData(const char *str, unsigned dataSize, UINT64 *data, bool registers = true);
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void FormatData(char *str, unsigned dataSize, UINT64 data);
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bool ParseAddress(const char *str, UINT32 *addr, bool customLabels = true, bool autoLabels = true, bool registers = true);
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void FormatAddress(char *str, UINT32 addr, bool customLabels = false, ELabelFlags autoLabelFlags = LFNone);
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void FormatJumpAddress(char *str, UINT32 jumpAddr, EOpFlags opFlags);
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bool ParsePortNum(const char *str, UINT16 *portNum, bool customLabels = true, bool registers = true);
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void FormatPortNum(char *str, UINT16 portNum, bool customLabels = false);
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//
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// Checking methods that hook into CPU emulation code
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//
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/*
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* Should be called after every 8-bit read.
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*/
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void CheckRead8(UINT32 addr, UINT8 data);
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/*
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* Should be called after every 16-bit read.
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*/
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void CheckRead16(UINT32 addr, UINT16 data);
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/*
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* Should be called after every 32-bit read.
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*/
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void CheckRead32(UINT32 addr, UINT32 data);
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/*
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* Should be called after every 64-bit read.
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*/
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void CheckRead64(UINT32 addr, UINT64 data);
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/*
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* Should be called after every 8-bit write.
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*/
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void CheckWrite8(UINT32 addr, UINT8 data);
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/*
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* Should be called after every 16-bit write.
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*/
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void CheckWrite16(UINT32 addr, UINT16 data);
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/*
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* Should be called after every 32-bit write.
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*/
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void CheckWrite32(UINT32 addr, UINT32 data);
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/*
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* Should be called after every 64-bit write.
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*/
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void CheckWrite64(UINT32 addr, UINT64 data);
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/*
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* Should be called after every read from an I/O port.
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*/
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void CheckPortInput(UINT16 portNum, UINT64 data);
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/*
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* Should be called after every write to an I/O port.
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*/
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void CheckPortOutput(UINT16 portNum, UINT64 data);
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/*
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* Should be called before every instruction.
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* If returns true, then PC may have been changed by user and/or an exception/interrupt may have forced, so CPU core should
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* check for this and handle appropriately. Otherwise, it can continue to execute as normal.
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*/
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bool CheckExecution(UINT32 newPC, UINT32 newOpcode);
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/*
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* Should be called whenever a CPU exception is raised (and before the exception handler is executed).
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*/
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virtual void CheckException(UINT16 exCode);
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/*
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* Should be called whenever a CPU interrupt is raised (and before the interrupt handler is executed).
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*/
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virtual void CheckInterrupt(UINT16 intCode);
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//
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// Execution control
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//
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void ForceBreak(bool user);
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void ClearBreak();
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void SetContinue();
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void SetStepMode(EStepMode stepMode);
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void SetCount(int count);
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void SetUntil(UINT32 untilAddr);
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bool SetPC(UINT32 newPC);
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bool GenerateException(CException *ex);
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bool GenerateInterrupt(CInterrupt *in);
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//
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// Register access
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//
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CRegister *GetRegister(const char *name);
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//
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// Exception access
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//
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CException *GetException(const char *id);
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CException *GetException(UINT16 code);
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//
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// Interrupt access
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//
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CInterrupt *GetInterrupt(const char *id);
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CInterrupt *GetInterrupt(UINT16 code);
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//
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// I/O access
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//
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CPortIO *GetPortIO(UINT16 portNum);
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CMappedIO *GetMappedIO(UINT32 addr);
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//
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// Region access
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//
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CRegion *GetRegion(UINT32 addr);
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//
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// Label handling
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//
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CLabel *AddLabel(UINT32 addr, const char *name);
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CLabel *GetLabel(UINT32 addr);
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CLabel *GetLabel(const char *name);
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bool RemoveLabel(const char *name);
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bool RemoveLabel(UINT32 addr);
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bool RemoveLabel(CLabel *label);
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bool RemoveAllLabels();
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//
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// Comment handling
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//
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CComment *AddComment(UINT32 addr, const char *commentText);
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CComment *GetComment(UINT32 addr);
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bool RemoveComment(UINT32 addr);
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bool RemoveComment(CComment *comment);
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bool RemoveAllComments();
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//
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// Watch handling
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//
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CSimpleWatch *AddSimpleMemWatch(UINT32 addr, UINT32 size, bool trigRead, bool trigWrite);
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CCountWatch *AddCountMemWatch(UINT32 addr, UINT32 size, bool trigRead, bool trigWrite, unsigned count);
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CMatchWatch *AddMatchMemWatch(UINT32 addr, UINT32 size, bool trigRead, bool trigWrite, vector<UINT64> &dataSeq);
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CPrintWatch *AddPrintMemWatch(UINT32 addr, UINT32 size, bool trigRead, bool trigWrite);
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CCaptureWatch *AddCaptureMemWatch(UINT32 addr, UINT32 size, bool trigRead, bool trigWrite, unsigned maxLen);
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bool RemoveAllMemWatches();
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bool RemoveAllIOWatches();
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bool RemoveMemWatch(UINT32 addr, unsigned size);
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CWatch *GetMemWatch(UINT32 addr, unsigned size);
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void AddWatch(CWatch *watch);
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bool RemoveWatch(CWatch *watch);
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void UpdateIOWatchNums();
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void UpdateMemWatchNums();
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//
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// Breakpoint handling
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//
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CSimpleBreakpoint *AddSimpleBreakpoint(UINT32 addr);
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CCountBreakpoint *AddCountBreakpoint(UINT32 addr, unsigned count);
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CPrintBreakpoint *AddPrintBreakpoint(UINT32 addr);
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void AddBreakpoint(CBreakpoint *bp);
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CBreakpoint *GetBreakpoint(UINT32 addr);
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bool RemoveBreakpoint(UINT32 addr);
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bool RemoveBreakpoint(CBreakpoint *bp);
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bool RemoveAllBreakpoints();
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void UpdateBreakpointNums();
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//
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// Register monitor handling
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//
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CRegMonitor *AddRegMonitor(const char *regName);
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CRegMonitor *GetRegMonitor(const char *regName);
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void AddRegMonitor(CRegMonitor *regMon);
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bool RemoveRegMonitor(const char *regName);
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bool RemoveRegMonitor(CRegMonitor *regMon);
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bool RemoveAllRegMonitors();
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void UpdateRegMonArray();
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//
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// Code analyser
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//
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CCodeAnalyser *GetCodeAnalyser();
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//
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// Memory searching
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//
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bool FindInMem(UINT32 start, UINT32 end, const char *str, bool matchCase, UINT32 &findAddr);
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bool FindInMem(UINT32 start, UINT32 end, UINT8 *bytes, unsigned length, UINT32 &findAddr);
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//
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// Debugger state loading/saving
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//
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#ifdef DEBUGGER_HASBLOCKFILE
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bool LoadState(CBlockFile *state);
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bool SaveState(CBlockFile *state);
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#endif // DEBUGGER_HASBLOCKFILE
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//
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// Public virtual methods for sub-class to implement
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//
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virtual void AttachToCPU() = 0;
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virtual void DetachFromCPU() = 0;
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virtual void DebuggerReset();
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virtual UINT32 GetResetAddr() = 0;
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virtual UINT64 ReadMem(UINT32 addr, unsigned dataSize);
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virtual bool WriteMem(UINT32 addr, unsigned dataSize, UINT64 data);
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virtual UINT64 ReadPort(UINT16 portNum);
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virtual bool WritePort(UINT16 portNum, UINT64 data);
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virtual int Disassemble(UINT32 addr, char *mnemonic, char *operands) = 0;
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virtual int GetOpLength(UINT32 addr);
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// Returns head (no more than 32-bits or min instr length) of full opcode for use with following methods
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virtual UINT32 GetOpcode(UINT32 addr);
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virtual EOpFlags GetOpFlags(UINT32 addr, UINT32 opcode) = 0;
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virtual bool GetJumpAddr(UINT32 addr, UINT32 opcode, UINT32 &jumpAddr) = 0;
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virtual bool GetJumpRetAddr(UINT32 addr, UINT32 opcode, UINT32 &retAddr) = 0;
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virtual bool GetReturnAddr(UINT32 addr, UINT32 opcode, UINT32 &retAddr) = 0;
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virtual bool GetHandlerAddr(CException *ex, UINT32 &handlerAddr) = 0;
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virtual bool GetHandlerAddr(CInterrupt *in, UINT32 &handlerAddr) = 0;
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};
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//
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// Inlined methods
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//
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inline bool CCPUDebug::ShiftAddress(UINT32 &addr, unsigned &dataSize, UINT64 &data, CAddressRef *ref)
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{
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UINT32 refAddr = ref->addr;
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unsigned refSize = ref->size;
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unsigned offset;
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if (refAddr >= addr)
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{
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offset = refAddr - addr;
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// dataSize will always be >= offset
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dataSize -= offset;
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if (dataSize <= refSize)
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return false;
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addr = refAddr + refSize;
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dataSize -= refSize;
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//data <<= (8 * (offset + refSize));
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return true;
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}
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else
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{
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offset = refAddr + refSize - addr;
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if (dataSize <= offset)
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return false;
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addr += offset;
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dataSize -= offset;
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//data <<= (8 * offset);
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return true;
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}
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}
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inline void CCPUDebug::CheckRead(UINT32 addr, unsigned dataSize, UINT64 data)
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{
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// TODO - currently assumes big-endian - should act according to this.bigEndian
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// For reads larger than 1 byte, care is taken with mapped I/O or watches that overlap within the read region
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while (dataSize > 0)
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{
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// Check if address is mapped I/O
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CMappedIO *mappedIO = NULL;
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if (m_mappedIOTable != NULL)
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{
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mappedIO = (CMappedIO*)m_mappedIOTable->Get(addr, dataSize);
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if (mappedIO != NULL)
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{
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// Check with I/O if its watch is triggered
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if (mappedIO->CheckInput(addr, dataSize, data))
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IOWatchTriggered(mappedIO->watch, mappedIO, data, true);
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// See if still have remaining data to check
|
|
if (!ShiftAddress(addr, dataSize, data, mappedIO))
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Check if address has a watch
|
|
CWatch *watch = NULL;
|
|
if (m_memWatchTable != NULL)
|
|
{
|
|
watch = (CWatch*)m_memWatchTable->Get(addr, dataSize);
|
|
if (watch != NULL)
|
|
{
|
|
// Check if watch is triggered
|
|
if (watch->CheckRead(addr, dataSize, data))
|
|
MemWatchTriggered(watch, addr, dataSize, data, true);
|
|
|
|
// See if still have remaining data to check
|
|
if (!ShiftAddress(addr, dataSize, data, watch))
|
|
return;
|
|
}
|
|
else if (mappedIO == NULL)
|
|
return;
|
|
}
|
|
else if (mappedIO == NULL)
|
|
return;
|
|
}
|
|
}
|
|
|
|
inline void CCPUDebug::CheckWrite(UINT32 addr, unsigned dataSize, UINT64 data)
|
|
{
|
|
// TODO - currently assumes big-endian - should act according to this.bigEndian
|
|
|
|
// For writes larger than 1 byte, care is taken with mapped I/O or watches that overlap within the written region
|
|
while (dataSize > 0)
|
|
{
|
|
// Check if writing to mapped I/O address
|
|
CMappedIO *mappedIO = NULL;
|
|
if (m_mappedIOTable != NULL)
|
|
{
|
|
mappedIO = (CMappedIO*)m_mappedIOTable->Get(addr, dataSize);
|
|
if (mappedIO != NULL)
|
|
{
|
|
// Check with I/O if its watch is triggered
|
|
if (mappedIO->CheckOutput(addr, dataSize, data))
|
|
IOWatchTriggered(mappedIO->watch, mappedIO, data, false);
|
|
|
|
// See if still have remaining data to check
|
|
if (!ShiftAddress(addr, dataSize, data, mappedIO))
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Check if address has a watch
|
|
CWatch *watch = NULL;
|
|
if (m_memWatchTable != NULL)
|
|
{
|
|
watch = (CWatch*)m_memWatchTable->Get(addr, dataSize);
|
|
if (watch != NULL)
|
|
{
|
|
// Check if watch is triggered
|
|
if (watch->CheckWrite(addr, dataSize, data))
|
|
MemWatchTriggered(watch, addr, dataSize, data, false);
|
|
|
|
// See if still have remaining data to check
|
|
if (!ShiftAddress(addr, dataSize, data, watch))
|
|
return;
|
|
}
|
|
else if (mappedIO == NULL)
|
|
return;
|
|
}
|
|
else if (mappedIO == NULL)
|
|
return;
|
|
}
|
|
}
|
|
|
|
inline void CCPUDebug::MemWatchTriggered(CWatch *watch, UINT32 addr, unsigned dataSize, UINT64 data, bool read)
|
|
{
|
|
m_memWatchTriggered = watch;
|
|
debugger->MemWatchTriggered(watch, addr, dataSize, data, read);
|
|
watch->Reset();
|
|
m_break = true;
|
|
}
|
|
|
|
inline void CCPUDebug::IOWatchTriggered(CWatch* watch, CIO *io, UINT64 data, bool read)
|
|
{
|
|
m_ioWatchTriggered = watch;
|
|
debugger->IOWatchTriggered(watch, io, data, read);
|
|
watch->Reset();
|
|
m_break = true;
|
|
}
|
|
|
|
inline void CCPUDebug::CheckRead8(UINT32 addr, UINT8 data)
|
|
{
|
|
// Check if reading from mapped I/O address
|
|
unsigned dataSize = 1;
|
|
if (m_mappedIOTable != NULL)
|
|
{
|
|
CMappedIO *mappedIO = (CMappedIO*)m_mappedIOTable->Get(addr);
|
|
if (mappedIO != NULL)
|
|
{
|
|
if (mappedIO->CheckInput(addr, dataSize, data))
|
|
IOWatchTriggered(mappedIO->watch, mappedIO, data, true);
|
|
return;
|
|
}
|
|
}
|
|
// Check if address has a watch
|
|
if (m_memWatchTable == NULL)
|
|
return;
|
|
CWatch *watch = (CWatch*)m_memWatchTable->Get(addr);
|
|
if (watch != NULL && watch->CheckRead(addr, dataSize, data))
|
|
MemWatchTriggered(watch, addr, dataSize, data, true);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckRead16(UINT32 addr, UINT16 data)
|
|
{
|
|
CheckRead(addr, 2, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckRead32(UINT32 addr, UINT32 data)
|
|
{
|
|
CheckRead(addr, 4, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckRead64(UINT32 addr, UINT64 data)
|
|
{
|
|
CheckRead(addr, 8, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckWrite8(UINT32 addr, UINT8 data)
|
|
{
|
|
// Check if writing to mapped I/O address
|
|
unsigned dataSize = 1;
|
|
if (m_mappedIOTable != NULL)
|
|
{
|
|
CMappedIO *mappedIO = (CMappedIO*)m_mappedIOTable->Get(addr);
|
|
if (mappedIO != NULL)
|
|
{
|
|
if (mappedIO->CheckOutput(addr, dataSize, data))
|
|
IOWatchTriggered(mappedIO->watch, mappedIO, data, false);
|
|
return;
|
|
}
|
|
}
|
|
// Check if address has a watch
|
|
if (m_memWatchTable == NULL)
|
|
return;
|
|
CWatch *watch = (CWatch*)m_memWatchTable->Get(addr);
|
|
if (watch != NULL && watch->CheckWrite(addr, dataSize, data))
|
|
MemWatchTriggered(watch, addr, dataSize, data, false);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckWrite16(UINT32 addr, UINT16 data)
|
|
{
|
|
CheckWrite(addr, 2, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckWrite32(UINT32 addr, UINT32 data)
|
|
{
|
|
CheckWrite(addr, 4, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckWrite64(UINT32 addr, UINT64 data)
|
|
{
|
|
CheckWrite(addr, 8, data);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckPortInput(UINT16 portNum, UINT64 data)
|
|
{
|
|
if (portNum >= numPorts)
|
|
return;
|
|
CPortIO *port = m_portArray[portNum];
|
|
if (port != NULL && port->CheckInput(data))
|
|
IOWatchTriggered(port->watch, port, data, true);
|
|
}
|
|
|
|
inline void CCPUDebug::CheckPortOutput(UINT16 portNum, UINT64 data)
|
|
{
|
|
if (portNum >= numPorts)
|
|
return;
|
|
CPortIO *port = m_portArray[portNum];
|
|
if (port != NULL && port->CheckOutput(data))
|
|
IOWatchTriggered(port->watch, port, data, false);
|
|
}
|
|
|
|
inline bool CCPUDebug::CheckExecution(UINT32 newPC, UINT32 newOpcode)
|
|
{
|
|
// Check if debugging is enabled for this CPU
|
|
if (!enabled)
|
|
{
|
|
// If not, update instruction count, pc and opcode but don't allow any execution control
|
|
instrCount++;
|
|
pc = newPC;
|
|
opcode = newOpcode;
|
|
return false;
|
|
}
|
|
|
|
// Check not just updating state
|
|
bool stepBreak, countBreak, untilBreak;
|
|
if (!m_stateUpdated)
|
|
{
|
|
// If so, then first check to see if any registers have changed from previous instruction before updating pc and opcode
|
|
if (m_numRegMons > 0)
|
|
{
|
|
for (int i = 0; i < m_numRegMons; i++)
|
|
{
|
|
CRegMonitor *regMon = m_regMonArray[i];
|
|
if (regMon->HasChanged())
|
|
{
|
|
m_regMonTriggered = regMon;
|
|
debugger->MonitorTriggered(regMon);
|
|
regMon->Reset();
|
|
m_break = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now update instruction count, pc and opcode
|
|
instrCount++;
|
|
pc = newPC;
|
|
opcode = newOpcode;
|
|
|
|
// Next check for breakpoints at new pc and opcode
|
|
if (m_bpTable != NULL)
|
|
{
|
|
CBreakpoint *bp = (CBreakpoint*)m_bpTable->Get(pc);
|
|
if (bp != NULL && bp->Check(pc, opcode))
|
|
{
|
|
m_bpReached = bp;
|
|
debugger->BreakpointReached(bp);
|
|
m_break = true;
|
|
}
|
|
}
|
|
|
|
// Check if currently implementing a step mode
|
|
if (m_step)
|
|
{
|
|
if (instrCount == 1)
|
|
stepBreak = true;
|
|
else
|
|
{
|
|
switch (m_stepMode)
|
|
{
|
|
case StepInto:
|
|
// Step-into always breaks
|
|
stepBreak = true;
|
|
break;
|
|
case StepOver:
|
|
// Step-over breaks if was not stepping over a jump or was stepping over and has returned from jump
|
|
stepBreak = !m_steppingOver || pc == m_stepOverAddr;
|
|
break;
|
|
case StepOut:
|
|
// Step-out steps over any jumps and breaks when it reaches a return or an exception/interrupt is raised
|
|
if (m_exRaised != NULL || m_intRaised != NULL)
|
|
stepBreak = true;
|
|
else if (m_steppingOver)
|
|
{
|
|
if (pc == m_stepOverAddr)
|
|
m_steppingOver = false;
|
|
stepBreak = false;
|
|
}
|
|
else
|
|
stepBreak = m_steppingOut && pc == m_stepOutAddr;
|
|
break;
|
|
default:
|
|
stepBreak = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
stepBreak = false;
|
|
|
|
// Lastly, check if counting instructions or if running until a given address
|
|
countBreak = m_count > 0 && --m_count == 0;
|
|
untilBreak = m_until && pc == m_untilAddr;
|
|
}
|
|
else
|
|
{
|
|
// Just updating state so update pc and opcode, but do not update instruction count
|
|
pc = newPC;
|
|
opcode = newOpcode;
|
|
|
|
stepBreak = false;
|
|
countBreak = false;
|
|
untilBreak = false;
|
|
}
|
|
|
|
// If a break has been forced, state was updated, stepping through code or have run a set number of instructions or to a
|
|
// given address then break now and wait for command from user
|
|
if (m_break || m_stateUpdated || stepBreak || countBreak || untilBreak)
|
|
{
|
|
// See if execution halt was caused by user manually breaking execution in some manner
|
|
if (m_stateUpdated || m_userBreak || stepBreak || countBreak || untilBreak)
|
|
{
|
|
EHaltReason reason = HaltNone;
|
|
if (m_stateUpdated) reason = (EHaltReason)(reason | HaltState);
|
|
if (m_userBreak) reason = (EHaltReason)(reason | HaltUser);
|
|
if (stepBreak) reason = (EHaltReason)(reason | HaltStep);
|
|
if (countBreak) reason = (EHaltReason)(reason | HaltCount);
|
|
if (untilBreak) reason = (EHaltReason)(reason | HaltUntil);
|
|
debugger->ExecutionHalted(this, reason);
|
|
}
|
|
|
|
// Keep hold of breakpoint, if any, and its address so that can reset it later
|
|
UINT32 bpAddr = 0;
|
|
CBreakpoint *bpToReset = NULL;
|
|
if (m_bpReached != NULL)
|
|
{
|
|
bpAddr = m_bpReached->addr;
|
|
bpToReset = m_bpReached;
|
|
}
|
|
|
|
// Reset all control flags
|
|
debugger->ClearBreak();
|
|
m_stateUpdated = false;
|
|
m_step = false;
|
|
m_steppingOver = false;
|
|
m_steppingOut = false;
|
|
m_count = 0;
|
|
m_until = false;
|
|
m_exRaised = NULL;
|
|
m_exTrapped = NULL;
|
|
m_intRaised = NULL;
|
|
m_intTrapped = NULL;
|
|
m_bpReached = NULL;
|
|
m_memWatchTriggered = NULL;
|
|
m_ioWatchTriggered = NULL;
|
|
m_regMonTriggered = NULL;
|
|
|
|
// Wait for instruction from user
|
|
debugger->WaitCommand(this);
|
|
|
|
// Reset breakpoint, if any
|
|
if (bpToReset != NULL && m_bpTable != NULL)
|
|
{
|
|
// Check breakpoint to reset was not deleted by user
|
|
CBreakpoint *bp = (CBreakpoint*)m_bpTable->Get(bpAddr);
|
|
if (bp == bpToReset)
|
|
bp->Reset();
|
|
}
|
|
|
|
// If stepping over, get step over address if available
|
|
if (m_step && m_stepMode == StepOver)
|
|
m_steppingOver = GetJumpRetAddr(pc, opcode, m_stepOverAddr);
|
|
}
|
|
|
|
// If stepping out, then make sure step over any jumps and if encounter a return instruction then break at return address
|
|
if (m_step && m_stepMode == StepOut)
|
|
{
|
|
if (!m_steppingOver)
|
|
m_steppingOver = GetJumpRetAddr(pc, opcode, m_stepOverAddr);
|
|
if (!m_steppingOver)
|
|
m_steppingOut = GetReturnAddr(pc, opcode, m_stepOutAddr);
|
|
}
|
|
|
|
return m_stateUpdated;
|
|
}
|
|
}
|
|
|
|
#endif // INCLUDED_CPUDEBUG_H
|
|
#endif // SUPERMODEL_DEBUGGER
|