project64/Source/Project64/N64 System/Recompiler/Code Block.h

/****************************************************************************
*                                                                           *
* Project 64 - A Nintendo 64 emulator.                                      *
* http://www.pj64-emu.com/                                                  *
* Copyright (C) 2012 Project64. All rights reserved.                        *
*                                                                           *
* License:                                                                  *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                        *
*                                                                           *
****************************************************************************/
#pragma once

class CCodeBlock :
    private CRecompilerOps
{
public:
    CCodeBlock(uint32_t VAddrEnter, uint8_t * RecompPos );
    ~CCodeBlock();

    bool Compile();

    uint32_t    VAddrEnter() const { return m_VAddrEnter; }
    uint32_t    VAddrFirst() const { return m_VAddrFirst; }
    uint32_t    VAddrLast()  const { return m_VAddrLast; }
    uint8_t *   CompiledLocation() const { return m_CompiledLocation; }
    int32_t      NoOfSections() const { return m_Sections.size(); }
    const CCodeSection & EnterSection() const { return *m_EnterSection; }
    const MD5Digest & Hash() const { return m_Hash; }

    void SetVAddrFirst(uint32_t VAddr) { m_VAddrFirst = VAddr; }
    void SetVAddrLast(uint32_t VAddr) { m_VAddrLast = VAddr; }

    CCodeSection * ExistingSection(uint32_t Addr) { return m_EnterSection->ExistingSection(Addr, NextTest()); }
    bool SectionAccessible(uint32_t m_SectionID) { return m_EnterSection->SectionAccessible(m_SectionID, NextTest()); }

    uint64_t   MemContents(int32_t i) const { return m_MemContents[i]; }
    uint64_t * MemLocation(int32_t i) const { return m_MemLocation[i]; }

    uint32_t NextTest();

    EXIT_LIST       m_ExitInfo;

private:
    CCodeBlock();                             // Disable default constructor
    CCodeBlock(const CCodeBlock&);            // Disable copy constructor
    CCodeBlock& operator=(const CCodeBlock&); // Disable assignment

    bool AnalyseBlock();
    void CompileExitCode();

    bool CreateBlockLinkage ( CCodeSection * EnterSection );
    void DetermineLoops     ();
    void LogSectionInfo     ();
    bool SetSection         ( CCodeSection * & Section, CCodeSection * CurrentSection, uint32_t TargetPC, bool LinkAllowed, uint32_t CurrentPC );
    bool AnalyzeInstruction ( uint32_t PC, uint32_t & TargetPC, uint32_t & ContinuePC, bool & LikelyBranch, bool & IncludeDelaySlot,
        bool & EndBlock, bool & PermLoop );

    uint32_t           m_VAddrEnter;
    uint32_t           m_VAddrFirst;       // the address of the first opcode in the block
    uint32_t           m_VAddrLast;        // the address of the first opcode in the block
    uint8_t*           m_CompiledLocation; // What address is this compiled at

    typedef std::map<uint32_t,CCodeSection *> SectionMap;
    typedef std::list<CCodeSection *>      SectionList;

    SectionMap      m_SectionMap;
    SectionList     m_Sections;
    CCodeSection  * m_EnterSection;
    int32_t            m_Test;
    MD5Digest       m_Hash;
    uint64_t        m_MemContents[2];
    uint64_t *      m_MemLocation[2];
};