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7197e3abd0
This way you can't mix up regular config callback IDs and CPU thread config callback IDs. (It would be rather bad if you did!)
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include <optional>
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#include <vector>
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#include "Common/CommonTypes.h"
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#include "Common/Config/Config.h"
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class PointerWrap;
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namespace PowerPC
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{
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constexpr u32 CACHE_SETS = 128;
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constexpr u32 CACHE_WAYS = 8;
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// size of an instruction cache block in words
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constexpr u32 CACHE_BLOCK_SIZE = 8;
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constexpr u32 CACHE_EXRAM_BIT = 0x10000000;
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constexpr u32 CACHE_VMEM_BIT = 0x20000000;
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struct Cache
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{
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std::array<std::array<std::array<u32, CACHE_BLOCK_SIZE>, CACHE_WAYS>, CACHE_SETS> data{};
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// Stores the 32-byte aligned address of the start of each cache block. This consists of the cache
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// set and tag. Real hardware only needs to store the tag, but also including the set simplifies
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// debugging and getting the actual address in the cache, without changing behavior (as the set
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// portion of the address is by definition the same for all addresses in a set).
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std::array<std::array<u32, CACHE_WAYS>, CACHE_SETS> addrs{};
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std::array<u8, CACHE_SETS> plru{};
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std::array<u8, CACHE_SETS> valid{};
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std::array<u8, CACHE_SETS> modified{};
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// Note: This is only for performance purposes; this same data could be computed at runtime
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// from the tags and valid fields (and that's how it's done on the actual cache)
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std::vector<u8> lookup_table{};
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std::vector<u8> lookup_table_ex{};
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std::vector<u8> lookup_table_vmem{};
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void Store(u32 addr);
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void Invalidate(u32 addr);
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void Flush(u32 addr);
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void Touch(u32 addr, bool store);
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void FlushAll();
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std::pair<u32, u32> GetCache(u32 addr, bool locked);
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void Read(u32 addr, void* buffer, u32 len, bool locked);
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void Write(u32 addr, const void* buffer, u32 len, bool locked);
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void Init();
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void Reset();
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void DoState(PointerWrap& p);
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};
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struct InstructionCache : public Cache
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{
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std::optional<Config::ConfigChangedCallbackID> m_config_callback_id = std::nullopt;
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bool m_disable_icache = false;
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InstructionCache() = default;
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~InstructionCache();
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u32 ReadInstruction(u32 addr);
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void Invalidate(u32 addr);
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void Init();
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void Reset();
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void RefreshConfig();
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};
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} // namespace PowerPC
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