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https://github.com/FEX-Emu/FEX.git
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Billy Laws
8e9f593c39
Handling this safely requires blocking all compilation for the duration of the read, as fault-based tracking doesn't work when wine's unix side itself is the one performing the write into the RWX region (we cannot catch unix faults). Fixes a startup crash in Persona 5.
66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
// SPDX-License-Identifier: MIT
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#pragma once
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#include <FEXCore/Utils/IntervalList.h>
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#include <FEXCore/HLE/SyscallHandler.h>
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#include <mutex>
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#include <shared_mutex>
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#include <unordered_map>
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#include <string_view>
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namespace FEXCore::Core {
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struct InternalThreadState;
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}
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namespace FEXCore::Context {
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class Context;
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}
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namespace FEX::Windows {
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/**
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* @brief Handles SMC and regular code invalidation
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*/
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class InvalidationTracker {
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public:
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InvalidationTracker(FEXCore::Context::Context& CTX, const std::unordered_map<DWORD, FEXCore::Core::InternalThreadState*>& Threads);
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void HandleMemoryProtectionNotification(uint64_t Address, uint64_t Size, ULONG Prot);
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void HandleImageMap(std::string_view Name, uint64_t Address);
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struct InvalidateContainingSectionResult {
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uint64_t SectionStart;
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uint64_t SectionSize;
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};
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InvalidateContainingSectionResult InvalidateContainingSection(uint64_t Address, bool Free);
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void InvalidateAlignedInterval(uint64_t Address, uint64_t Size, bool Free);
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void ReprotectRWXIntervals(uint64_t Address, uint64_t Size);
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bool HandleRWXAccessViolation(FEXCore::Core::InternalThreadState* Thread, uint64_t HostPC, uint64_t FaultAddress);
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// Unprotects any RWX intervals in the input interval and invalidates code
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// NOTE: CodeInvalidationMutex must be locked when calling this, and if true is returned, kept locked until the write ends.
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bool BeginUntrackedWriteLocked(uint64_t Address, uint64_t Size);
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FEXCore::HLE::ExecutableRangeInfo QueryExecutableRange(uint64_t Address);
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private:
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void DetectMonoBackpatcherBlock(FEXCore::Core::InternalThreadState* Thread, uint64_t HostPC);
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void DisableSMCDetection();
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void InvalidateIntervalInternal(uint64_t Address, uint64_t Size);
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// NOTE: This assumed CodeInvalidationMutex is locked by the caller
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void InvalidateIntervalInternalLocked(uint64_t Address, uint64_t Size);
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// NOTE: If ForWriteLocked is true then this assumes CodeInvalidationMutex is locked by the caller,
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// and any code in the range will be invalidated before protection as RWX, otherwise protects as RX if false.
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bool ProtectRWXIntervalsInternal(uint64_t Address, uint64_t Size, bool ForWriteLocked);
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FEXCore::IntervalList<uint64_t> XIntervals;
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FEXCore::IntervalList<uint64_t> RWXIntervals;
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std::shared_mutex IntervalsLock;
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FEXCore::Context::Context& CTX;
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const std::unordered_map<DWORD, FEXCore::Core::InternalThreadState*>& Threads;
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bool SMCDetectionDisabled {false}; // Protected by IntervalsLock
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bool MonoBackpatcherDetectionPending {false};
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uint64_t MonoBase {0};
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uint64_t MonoEnd {0};
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};
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} // namespace FEX::Windows
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