62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
#pragma once
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#include <common.hpp>
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#include <array>
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namespace n64 {
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struct alignas(32) ICacheLine {
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bool valid;
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u32 data[8];
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u32 ptag;
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};
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struct alignas(32) DCacheLine {
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bool valid, dirty;
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u8 data[16];
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u32 ptag;
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int index;
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};
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struct Cop0;
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inline const u32 GetPhysicalAddressPTag(const u32 paddr) { return paddr >> 12; }
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inline const int GetICacheLineIndex(u64 vaddr) { return (vaddr >> 5) & 0x1FF; }
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inline const u32 GetICacheLineStart(u64 paddr) { return paddr & ~0x1F; }
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inline const int GetDCacheLineIndex(u64 vaddr) { return (vaddr >> 4) & 0x1FF; }
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inline const u32 GetDCacheLineStart(u64 paddr) { return paddr & ~0xF; }
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struct InstructionCache {
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std::array<ICacheLine, 512> lines;
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void FillLine(u64, u32);
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void InvalidateIndex(u64 vaddr) { lines[GetICacheLineIndex(vaddr)].valid = false; }
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void StoreTag(u64, u32, Cop0 &);
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void LoadTag(u64 vaddr);
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void WriteBack(u64 vaddr, u32 paddr, u32 ptag);
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void InvalidateIndex(u64 vaddr, u32 ptag) {
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int lineIndex = GetICacheLineIndex(vaddr);
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if (lines[lineIndex].valid && lines[lineIndex].ptag == ptag)
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lines[lineIndex].valid = false;
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}
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private:
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};
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struct DataCache {
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std::array<DCacheLine, 512> lines;
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void StoreTag(u64, u32, Cop0 &);
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void LoadTag(u64 vaddr);
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template <bool invalidate = false>
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void WriteBack(u64 vaddr, u32 paddr);
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template <bool invalidate = false>
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void WriteBack(u64 vaddr, u32 paddr, u32 ptag);
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void InvalidateIndex(u64 vaddr) { lines[GetDCacheLineIndex(vaddr)].valid = false; }
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void InvalidateIndex(u64 vaddr, u32 ptag) {
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int lineIndex = GetDCacheLineIndex(vaddr);
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if (lines[lineIndex].valid && lines[lineIndex].ptag == ptag)
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lines[lineIndex].valid = false;
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}
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};
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} // namespace n64
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