mirror of
https://github.com/dolphin-emu/dolphin.git
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385 lines
9.7 KiB
C++
385 lines
9.7 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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// NOTE:
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// These functions are primarily used by the interpreter versions of the LoadStore instructions.
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// However, if a JITed instruction (for example lwz) wants to access a bad memory area that call
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// may be redirected here (for example to Read_U32()).
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#include "Common/ChunkFile.h"
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#include "Common/Common.h"
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#include "Common/MemArena.h"
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#include "Common/MemoryUtil.h"
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#include "Core/ConfigManager.h"
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#include "Core/Core.h"
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#include "Core/Debugger/Debugger_SymbolMap.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HW/AudioInterface.h"
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#include "Core/HW/CPU.h"
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#include "Core/HW/DSP.h"
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#include "Core/HW/DVDInterface.h"
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#include "Core/HW/EXI.h"
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#include "Core/HW/GPFifo.h"
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#include "Core/HW/Memmap.h"
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#include "Core/HW/MemoryInterface.h"
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#include "Core/HW/MMIO.h"
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#include "Core/HW/ProcessorInterface.h"
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#include "Core/HW/SI.h"
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#include "Core/HW/VideoInterface.h"
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#include "Core/HW/WII_IPC.h"
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#include "Core/PowerPC/PowerPC.h"
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#include "Core/PowerPC/JitCommon/JitBase.h"
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#include "VideoCommon/PixelEngine.h"
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#include "VideoCommon/VideoBackendBase.h"
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namespace Memory
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{
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// =================================
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// LOCAL SETTINGS
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// ----------------
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/* Enable the Translation Lookaside Buffer functions. TLBHack = 1 in Dolphin.ini or a
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<GameID>.ini file will set this to true */
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bool bFakeVMEM = false;
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static bool bMMU = false;
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// ==============
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// =================================
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// Init() declarations
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// ----------------
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// Store the MemArena here
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u8* base = nullptr;
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// The MemArena class
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static MemArena g_arena;
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// ==============
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// STATE_TO_SAVE
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static bool m_IsInitialized = false; // Save the Init(), Shutdown() state
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// END STATE_TO_SAVE
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// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
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// 32-bit: Same as the corresponding physical/virtual pointers.
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u8 *m_pRAM;
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u8 *m_pL1Cache;
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u8 *m_pEXRAM;
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u8 *m_pFakeVMEM;
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//u8 *m_pEFB;
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// 64-bit: Pointers to high-mem mirrors
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// 32-bit: Same as above
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static u8 *m_pPhysicalRAM;
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static u8 *m_pVirtualCachedRAM;
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static u8 *m_pVirtualUncachedRAM;
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static u8 *m_pPhysicalEXRAM; // wii only
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static u8 *m_pVirtualCachedEXRAM; // wii only
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static u8 *m_pVirtualUncachedEXRAM; // wii only
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//u8 *m_pVirtualEFB;
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static u8 *m_pVirtualL1Cache;
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u8 *m_pVirtualFakeVMEM;
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// MMIO mapping object.
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MMIO::Mapping* mmio_mapping;
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static void InitMMIO(MMIO::Mapping* mmio)
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{
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g_video_backend->RegisterCPMMIO(mmio, 0xCC000000);
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PixelEngine::RegisterMMIO(mmio, 0xCC001000);
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VideoInterface::RegisterMMIO(mmio, 0xCC002000);
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ProcessorInterface::RegisterMMIO(mmio, 0xCC003000);
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MemoryInterface::RegisterMMIO(mmio, 0xCC004000);
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DSP::RegisterMMIO(mmio, 0xCC005000);
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DVDInterface::RegisterMMIO(mmio, 0xCC006000);
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SerialInterface::RegisterMMIO(mmio, 0xCC006400);
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ExpansionInterface::RegisterMMIO(mmio, 0xCC006800);
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AudioInterface::RegisterMMIO(mmio, 0xCC006C00);
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}
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static void InitMMIOWii(MMIO::Mapping* mmio)
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{
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InitMMIO(mmio);
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WII_IPCInterface::RegisterMMIO(mmio, 0xCD000000);
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DVDInterface::RegisterMMIO(mmio, 0xCD006000);
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SerialInterface::RegisterMMIO(mmio, 0xCD006400);
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ExpansionInterface::RegisterMMIO(mmio, 0xCD006800);
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AudioInterface::RegisterMMIO(mmio, 0xCD006C00);
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}
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bool IsInitialized()
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{
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return m_IsInitialized;
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}
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// We don't declare the IO region in here since its handled by other means.
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static const MemoryView views[] =
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{
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{&m_pRAM, &m_pPhysicalRAM, 0x00000000, RAM_SIZE, 0},
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{nullptr, &m_pVirtualCachedRAM, 0x80000000, RAM_SIZE, MV_MIRROR_PREVIOUS},
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{nullptr, &m_pVirtualUncachedRAM, 0xC0000000, RAM_SIZE, MV_MIRROR_PREVIOUS},
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// Don't map any memory for the EFB. We want all access to this area to go
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// through the hardware access handlers.
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#if _ARCH_32
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// {&m_pEFB, &m_pVirtualEFB, 0xC8000000, EFB_SIZE, 0},
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#endif
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{&m_pL1Cache, &m_pVirtualL1Cache, 0xE0000000, L1_CACHE_SIZE, 0},
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{&m_pFakeVMEM, &m_pVirtualFakeVMEM, 0x7E000000, FAKEVMEM_SIZE, MV_FAKE_VMEM},
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{&m_pEXRAM, &m_pPhysicalEXRAM, 0x10000000, EXRAM_SIZE, MV_WII_ONLY},
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{nullptr, &m_pVirtualCachedEXRAM, 0x90000000, EXRAM_SIZE, MV_WII_ONLY | MV_MIRROR_PREVIOUS},
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{nullptr, &m_pVirtualUncachedEXRAM, 0xD0000000, EXRAM_SIZE, MV_WII_ONLY | MV_MIRROR_PREVIOUS},
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};
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static const int num_views = sizeof(views) / sizeof(MemoryView);
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void Init()
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{
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bool wii = SConfig::GetInstance().m_LocalCoreStartupParameter.bWii;
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bFakeVMEM = SConfig::GetInstance().m_LocalCoreStartupParameter.bTLBHack == true;
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bMMU = SConfig::GetInstance().m_LocalCoreStartupParameter.bMMU;
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u32 flags = 0;
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if (wii) flags |= MV_WII_ONLY;
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if (bFakeVMEM) flags |= MV_FAKE_VMEM;
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base = MemoryMap_Setup(views, num_views, flags, &g_arena);
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mmio_mapping = new MMIO::Mapping();
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if (wii)
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InitMMIOWii(mmio_mapping);
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else
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InitMMIO(mmio_mapping);
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INFO_LOG(MEMMAP, "Memory system initialized. RAM at %p (mirrors at 0 @ %p, 0x80000000 @ %p , 0xC0000000 @ %p)",
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m_pRAM, m_pPhysicalRAM, m_pVirtualCachedRAM, m_pVirtualUncachedRAM);
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m_IsInitialized = true;
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}
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void DoState(PointerWrap &p)
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{
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bool wii = SConfig::GetInstance().m_LocalCoreStartupParameter.bWii;
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p.DoArray(m_pPhysicalRAM, RAM_SIZE);
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//p.DoArray(m_pVirtualEFB, EFB_SIZE);
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p.DoArray(m_pVirtualL1Cache, L1_CACHE_SIZE);
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p.DoMarker("Memory RAM");
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if (bFakeVMEM)
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p.DoArray(m_pVirtualFakeVMEM, FAKEVMEM_SIZE);
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p.DoMarker("Memory FakeVMEM");
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if (wii)
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p.DoArray(m_pEXRAM, EXRAM_SIZE);
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p.DoMarker("Memory EXRAM");
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}
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void Shutdown()
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{
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m_IsInitialized = false;
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u32 flags = 0;
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if (SConfig::GetInstance().m_LocalCoreStartupParameter.bWii) flags |= MV_WII_ONLY;
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if (bFakeVMEM) flags |= MV_FAKE_VMEM;
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MemoryMap_Shutdown(views, num_views, flags, &g_arena);
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g_arena.ReleaseSpace();
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base = nullptr;
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delete mmio_mapping;
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INFO_LOG(MEMMAP, "Memory system shut down.");
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}
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void Clear()
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{
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if (m_pRAM)
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memset(m_pRAM, 0, RAM_SIZE);
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if (m_pL1Cache)
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memset(m_pL1Cache, 0, L1_CACHE_SIZE);
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if (SConfig::GetInstance().m_LocalCoreStartupParameter.bWii && m_pEXRAM)
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memset(m_pEXRAM, 0, EXRAM_SIZE);
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}
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bool AreMemoryBreakpointsActivated()
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{
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#ifndef ENABLE_MEM_CHECK
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return false;
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#else
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return true;
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#endif
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}
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u32 Read_Instruction(const u32 em_address)
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{
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UGeckoInstruction inst = ReadUnchecked_U32(em_address);
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return inst.hex;
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}
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void WriteBigEData(const u8 *_pData, const u32 _Address, const size_t _iSize)
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{
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memcpy(GetPointer(_Address), _pData, _iSize);
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}
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void Memset(const u32 _Address, const u8 _iValue, const u32 _iLength)
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{
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u8 *ptr = GetPointer(_Address);
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if (ptr != nullptr)
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{
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memset(ptr,_iValue,_iLength);
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}
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else
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{
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for (u32 i = 0; i < _iLength; i++)
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Write_U8(_iValue, _Address + i);
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}
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}
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void DMA_LCToMemory(const u32 _MemAddr, const u32 _CacheAddr, const u32 _iNumBlocks)
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{
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const u8 *src = m_pL1Cache + (_CacheAddr & 0x3FFFF);
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u8 *dst = GetPointer(_MemAddr);
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if ((dst != nullptr) && (src != nullptr) && (_MemAddr & 3) == 0 && (_CacheAddr & 3) == 0)
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{
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memcpy(dst, src, 32 * _iNumBlocks);
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}
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else
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{
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for (u32 i = 0; i < 32 * _iNumBlocks; i++)
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{
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u8 Temp = Read_U8(_CacheAddr + i);
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Write_U8(Temp, _MemAddr + i);
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}
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}
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}
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void DMA_MemoryToLC(const u32 _CacheAddr, const u32 _MemAddr, const u32 _iNumBlocks)
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{
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const u8 *src = GetPointer(_MemAddr);
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u8 *dst = m_pL1Cache + (_CacheAddr & 0x3FFFF);
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if ((dst != nullptr) && (src != nullptr) && (_MemAddr & 3) == 0 && (_CacheAddr & 3) == 0)
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{
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memcpy(dst, src, 32 * _iNumBlocks);
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}
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else
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{
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for (u32 i = 0; i < 32 * _iNumBlocks; i++)
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{
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u8 Temp = Read_U8(_MemAddr + i);
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Write_U8(Temp, _CacheAddr + i);
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}
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}
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}
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void ReadBigEData(u8 *data, const u32 em_address, const u32 size)
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{
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u8 *src = GetPointer(em_address);
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memcpy(data, src, size);
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}
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void GetString(std::string& _string, const u32 em_address)
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{
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char stringBuffer[2048];
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char *string = stringBuffer;
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char c;
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u32 addr = em_address;
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while ((c = Read_U8(addr)))
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{
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*string++ = c;
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addr++;
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}
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*string++ = '\0';
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_string = stringBuffer;
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}
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// GetPointer must always return an address in the bottom 32 bits of address space, so that 64-bit
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// programs don't have problems directly addressing any part of memory.
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// TODO re-think with respect to other BAT setups...
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u8 *GetPointer(const u32 _Address)
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{
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switch (_Address >> 28)
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{
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case 0x0:
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case 0x8:
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if ((_Address & 0xfffffff) < REALRAM_SIZE)
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return m_pPhysicalRAM + (_Address & RAM_MASK);
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case 0xc:
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switch (_Address >> 24)
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{
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case 0xcc:
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case 0xcd:
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_dbg_assert_msg_(MEMMAP, 0, "GetPointer from IO Bridge doesnt work");
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case 0xc8:
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// EFB. We don't want to return a pointer here since we have no memory mapped for it.
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break;
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default:
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if ((_Address & 0xfffffff) < REALRAM_SIZE)
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return m_pPhysicalRAM + (_Address & RAM_MASK);
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}
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case 0x1:
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case 0x9:
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case 0xd:
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if (SConfig::GetInstance().m_LocalCoreStartupParameter.bWii)
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{
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if ((_Address & 0xfffffff) < EXRAM_SIZE)
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return m_pPhysicalEXRAM + (_Address & EXRAM_MASK);
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}
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else
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break;
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case 0xe:
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if (_Address < (0xE0000000 + L1_CACHE_SIZE))
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return m_pL1Cache + (_Address & L1_CACHE_MASK);
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else
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break;
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default:
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if (bFakeVMEM)
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return m_pVirtualFakeVMEM + (_Address & FAKEVMEM_MASK);
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}
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ERROR_LOG(MEMMAP, "Unknown Pointer %#8x PC %#8x LR %#8x", _Address, PC, LR);
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return nullptr;
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}
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bool IsRAMAddress(const u32 addr, bool allow_locked_cache, bool allow_fake_vmem)
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{
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switch ((addr >> 24) & 0xFC)
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{
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case 0x00:
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case 0x80:
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case 0xC0:
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if ((addr & 0x1FFFFFFF) < RAM_SIZE)
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return true;
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else
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return false;
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case 0x10:
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case 0x90:
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case 0xD0:
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if (SConfig::GetInstance().m_LocalCoreStartupParameter.bWii && (addr & 0x0FFFFFFF) < EXRAM_SIZE)
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return true;
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else
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return false;
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case 0xE0:
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if (allow_locked_cache && addr - 0xE0000000 < L1_CACHE_SIZE)
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return true;
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else
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return false;
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case 0x7C:
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if (allow_fake_vmem && bFakeVMEM && addr >= 0x7E000000)
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return true;
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else
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return false;
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default:
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return false;
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}
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}
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} // namespace
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