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https://github.com/Retropex/dolphin.git
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09df343247
It wouldn't impact performance until at least one memcheck is enabled. Because of this, it can be used in release builds without much impact, the only thing that woudl change is the use of HasAny method instead of preprocessor conditionals. Since the perforamnce decrease comes right when the first memcheck is added and restored when the last is removed, it basically is all beneficial and works the same way.
114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
// Copyright 2008 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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#pragma once
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#include <memory>
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#include <string>
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#include "Common/CommonFuncs.h"
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#include "Common/CommonTypes.h"
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#include "Core/PowerPC/PowerPC.h"
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// Global declarations
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class PointerWrap;
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namespace MMIO
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{
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class Mapping;
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}
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namespace Memory
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{
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// Base is a pointer to the base of the memory map. Yes, some MMU tricks
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// are used to set up a full GC or Wii memory map in process memory. on
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// 32-bit, you have to mask your offsets with 0x3FFFFFFF. This means that
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// some things are mirrored too many times, but eh... it works.
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// In 64-bit, this might point to "high memory" (above the 32-bit limit),
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// so be sure to load it into a 64-bit register.
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extern u8* physical_base;
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extern u8* logical_base;
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// These are guaranteed to point to "low memory" addresses (sub-32-bit).
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extern u8* m_pRAM;
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extern u8* m_pEXRAM;
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extern u8* m_pL1Cache;
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extern u8* m_pFakeVMEM;
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extern bool bFakeVMEM;
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enum
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{
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// RAM_SIZE is the amount allocated by the emulator, whereas REALRAM_SIZE is
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// what will be reported in lowmem, and thus used by emulated software.
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// Note: Writing to lowmem is done by IPL. If using retail IPL, it will
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// always be set to 24MB.
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REALRAM_SIZE = 0x01800000,
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RAM_SIZE = ROUND_UP_POW2(REALRAM_SIZE),
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RAM_MASK = RAM_SIZE - 1,
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FAKEVMEM_SIZE = 0x02000000,
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FAKEVMEM_MASK = FAKEVMEM_SIZE - 1,
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L1_CACHE_SIZE = 0x00040000,
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L1_CACHE_MASK = L1_CACHE_SIZE - 1,
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IO_SIZE = 0x00010000,
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EXRAM_SIZE = 0x04000000,
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EXRAM_MASK = EXRAM_SIZE - 1,
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};
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// MMIO mapping object.
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extern std::unique_ptr<MMIO::Mapping> mmio_mapping;
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// Init and Shutdown
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bool IsInitialized();
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void Init();
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void Shutdown();
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void DoState(PointerWrap& p);
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void UpdateLogicalMemory(const PowerPC::BatTable& dbat_table);
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void Clear();
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// Routines to access physically addressed memory, designed for use by
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// emulated hardware outside the CPU. Use "Device_" prefix.
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std::string GetString(u32 em_address, size_t size = 0);
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u8* GetPointer(const u32 address);
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void CopyFromEmu(void* data, u32 address, size_t size);
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void CopyToEmu(u32 address, const void* data, size_t size);
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void Memset(u32 address, u8 value, size_t size);
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u8 Read_U8(const u32 address);
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u16 Read_U16(const u32 address);
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u32 Read_U32(const u32 address);
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u64 Read_U64(const u32 address);
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void Write_U8(const u8 var, const u32 address);
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void Write_U16(const u16 var, const u32 address);
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void Write_U32(const u32 var, const u32 address);
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void Write_U64(const u64 var, const u32 address);
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void Write_U32_Swap(const u32 var, const u32 address);
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void Write_U64_Swap(const u64 var, const u32 address);
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// Templated functions for byteswapped copies.
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template <typename T>
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void CopyFromEmuSwapped(T* data, u32 address, size_t size)
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{
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const T* src = reinterpret_cast<T*>(GetPointer(address));
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if (src == nullptr)
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return;
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for (size_t i = 0; i < size / sizeof(T); i++)
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data[i] = Common::FromBigEndian(src[i]);
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}
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template <typename T>
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void CopyToEmuSwapped(u32 address, const T* data, size_t size)
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{
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T* dest = reinterpret_cast<T*>(GetPointer(address));
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if (dest == nullptr)
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return;
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for (size_t i = 0; i < size / sizeof(T); i++)
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dest[i] = Common::FromBigEndian(data[i]);
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}
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}
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