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Cached TLB entries

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SimoneN64
2024-10-15 10:56:47 +02:00
parent 57fd6a9af8
commit a0d46ca24e
3 changed files with 54 additions and 23 deletions
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27
src/backend/core/registers/Cop0.hpp
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@@ -1,6 +1,7 @@
#pragma once
#include <common.hpp>
#include "log.hpp"
#include <log.hpp>
#include <unordered_map>
namespace n64 {
#define STATUS_MASK 0xFF57FFFF
@@ -160,6 +161,12 @@ struct TLBEntry {
PageMask pageMask;
bool global;
auto operator==(const TLBEntry& other) {
return initialized == other.initialized && entryLo0.raw == other.entryLo0.raw &&
entryLo1.raw == other.entryLo1.raw && entryHi.raw == other.entryHi.raw && pageMask.raw == other.pageMask.raw &&
global == other.global;
}
};
enum TLBError : u8 { NONE, MISS, INVALID, MODIFICATION, DISALLOWED_ADDRESS };
@@ -236,6 +243,12 @@ struct Cop0 {
s64 ErrorEPC{};
u32 r31{};
TLBEntry tlb[32]{};
struct TLBCachedEntry {
int index = -1;
TLBEntry *entry = nullptr;
};
std::unordered_map<u64, TLBCachedEntry> tlbCache;
TLBError tlbError = NONE;
s64 openbus{};
template <class T>
@@ -267,15 +280,15 @@ struct Cop0 {
enum TLBAccessType { LOAD, STORE };
bool ProbeTLB(TLBAccessType accessType, u64 vaddr, u32 &paddr, int *match) const;
bool ProbeTLB(TLBAccessType accessType, u64 vaddr, u32 &paddr);
void FireException(ExceptionCode code, int cop, s64 pc) const;
bool MapVAddr(TLBAccessType accessType, u64 vaddr, u32 &paddr);
bool UserMapVAddr32(TLBAccessType accessType, u64 vaddr, u32 &paddr) const;
bool MapVAddr32(TLBAccessType accessType, u64 vaddr, u32 &paddr) const;
bool UserMapVAddr64(TLBAccessType accessType, u64 vaddr, u32 &paddr) const;
bool MapVAddr64(TLBAccessType accessType, u64 vaddr, u32 &paddr) const;
bool UserMapVAddr32(TLBAccessType accessType, u64 vaddr, u32 &paddr);
bool MapVAddr32(TLBAccessType accessType, u64 vaddr, u32 &paddr);
bool UserMapVAddr64(TLBAccessType accessType, u64 vaddr, u32 &paddr);
bool MapVAddr64(TLBAccessType accessType, u64 vaddr, u32 &paddr);
TLBEntry *TLBTryMatch(u64 vaddr, int *match) const;
TLBEntry *TLBTryMatch(u64 vaddr, int* index);
void HandleTLBException(u64 vaddr) const;
static ExceptionCode GetTLBExceptionCode(TLBError error, TLBAccessType accessType);