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Small TLB cleanup

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irisz64
2025-09-01 12:05:25 +02:00
parent 5444df993c
commit bd4a692899
1 changed files with 25 additions and 21 deletions
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44
src/backend/core/registers/Cop0.cpp
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@@ -294,36 +294,40 @@ static FORCE_INLINE u64 getVPN(const u64 addr, const u64 pageMask) {
TLBEntry *Cop0::TLBTryMatch(const u64 vaddr, int &index) { TLBEntry *Cop0::TLBTryMatch(const u64 vaddr, int &index) {
for (int i = 0; i < 32; i++) { for (int i = 0; i < 32; i++) {
if (TLBEntry *entry = &tlb[i]; entry->initialized) { TLBEntry *entry = &tlb[i];
const u64 entry_vpn = getVPN(entry->entryHi.raw, entry->pageMask.raw); if (!entry->initialized)
const u64 vaddr_vpn = getVPN(vaddr, entry->pageMask.raw); continue;
const bool vpn_match = entry_vpn == vaddr_vpn; const u64 entry_vpn = getVPN(entry->entryHi.raw, entry->pageMask.raw);
const u64 vaddr_vpn = getVPN(vaddr, entry->pageMask.raw);
if (const bool asid_match = entry->global || entryHi.asid == entry->entryHi.asid; const bool vpn_match = entry_vpn == vaddr_vpn;
vpn_match && asid_match) { const bool asid_match = entry->global || entryHi.asid == entry->entryHi.asid;
index = i;
return entry; if(!vpn_match || !asid_match)
} continue;
}
index = i;
return entry;
} }
return nullptr; return nullptr;
} }
TLBEntry *Cop0::TLBTryMatch(const u64 vaddr) { TLBEntry *Cop0::TLBTryMatch(const u64 vaddr) {
for (auto &i : tlb) { for (auto &t : tlb) {
if (TLBEntry *entry = &i; entry->initialized) { TLBEntry *entry = &t;
const u64 entry_vpn = getVPN(entry->entryHi.raw, entry->pageMask.raw); if (!entry->initialized)
const u64 vaddr_vpn = getVPN(vaddr, entry->pageMask.raw); continue;
const bool vpn_match = entry_vpn == vaddr_vpn; const u64 entry_vpn = getVPN(entry->entryHi.raw, entry->pageMask.raw);
const u64 vaddr_vpn = getVPN(vaddr, entry->pageMask.raw);
if (const bool asid_match = entry->global || entryHi.asid == entry->entryHi.asid; const bool vpn_match = entry_vpn == vaddr_vpn;
vpn_match && asid_match) { const bool asid_match = entry->global || entryHi.asid == entry->entryHi.asid;
return entry;
} if (vpn_match && asid_match)
} return entry;
} }
return nullptr; return nullptr;