dolphin/Source/Core/Core/PowerPC/CachedInterpreter.h

// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include <vector>

#include "Common/CommonTypes.h"
#include "Core/PowerPC/JitCommon/JitBase.h"
#include "Core/PowerPC/PPCAnalyst.h"

class CachedInterpreter : public JitBase, JitBaseBlockCache
{
public:
  CachedInterpreter() : code_buffer(32000) {}
  ~CachedInterpreter() {}
  void Init() override;
  void Shutdown() override;

  bool HandleFault(uintptr_t access_address, SContext* ctx) override { return false; }
  void ClearCache() override;

  void Run() override;
  void SingleStep() override;

  void Jit(u32 address) override;

  JitBaseBlockCache* GetBlockCache() override { return this; }
  const char* GetName() override { return "Cached Interpreter"; }
  void WriteLinkBlock(const JitBlock::LinkData& source, const JitBlock* dest) override {}
  const CommonAsmRoutinesBase* GetAsmRoutines() override { return nullptr; }
private:
  struct Instruction
  {
    typedef void (*CommonCallback)(UGeckoInstruction);
    typedef bool (*ConditionalCallback)(u32 data);

    Instruction() : type(INSTRUCTION_ABORT){};
    Instruction(const CommonCallback c, UGeckoInstruction i)
        : common_callback(c), data(i.hex), type(INSTRUCTION_TYPE_COMMON){};
    Instruction(const ConditionalCallback c, u32 d)
        : conditional_callback(c), data(d), type(INSTRUCTION_TYPE_CONDITIONAL){};

    union {
      const CommonCallback common_callback;
      const ConditionalCallback conditional_callback;
    };
    u32 data;
    enum
    {
      INSTRUCTION_ABORT,
      INSTRUCTION_TYPE_COMMON,
      INSTRUCTION_TYPE_CONDITIONAL,
    } type;
  };

  const u8* GetCodePtr() { return (u8*)(m_code.data() + m_code.size()); }
  std::vector<Instruction> m_code;

  PPCAnalyst::CodeBuffer code_buffer;
};