9d7627af64
* Add AddressTable<T>
* Use AddressTable<T> for dispatch
* Remove JumpTable & co.
* Add fallback for out of range addresses
* Add PPTC support
* Add documentation to `AddressTable<T>`
* Make AddressTable<T> configurable
* Fix table walk
* Fix IsMapped check
* Remove CountTableCapacity
* Add PPTC support for fast path
* Rename IsMapped to IsValid
* Remove stale comment
* Change format of address in exception message
* Add TranslatorStubs
* Split DispatchStub
Avoids recompilation of stubs during tests.
* Add hint for 64bit or 32bit
* Add documentation to `Symbol`
* Add documentation to `TranslatorStubs`
Make `TranslatorStubs` disposable as well.
* Add documentation to `SymbolType`
* Add `AddressTableEventSource` to monitor function table size
Add an EventSource which measures the amount of unmanaged bytes
allocated by AddressTable<T> instances.
dotnet-counters monitor -n Ryujinx --counters ARMeilleure
* Add `AllowLcqInFunctionTable` optimization toggle
This is to reduce the impact this change has on the test duration.
Before everytime a test was ran, the FunctionTable would be initialized
and populated so that the newly compiled test would get registered to
it.
* Implement unmanaged dispatcher
Uses the DispatchStub to dispatch into the next translation, which
allows execution to stay in unmanaged for longer and skips a
ConcurrentDictionary look up when the target translation has been
registered to the FunctionTable.
* Remove redundant null check
* Tune levels of FunctionTable
Uses 5 levels instead of 4 and change unit of AddressTableEventSource
from KB to MB.
* Use 64-bit function table
Improves codegen for direct branches:
mov qword [rax+0x408],0x10603560
- mov rcx,sub_10603560_OFFSET
- mov ecx,[rcx]
- mov ecx,ecx
- mov rdx,JIT_CACHE_BASE
- add rdx,rcx
+ mov rcx,sub_10603560
+ mov rdx,[rcx]
mov rcx,rax
Improves codegen for dispatch stub:
and rax,byte +0x1f
- mov eax,[rcx+rax*4]
- mov eax,eax
- mov rcx,JIT_CACHE_BASE
- lea rax,[rcx+rax]
+ mov rax,[rcx+rax*8]
mov rcx,rbx
* Remove `JitCacheSymbol` & `JitCache.Offset`
* Turn `Translator.Translate` into an instance method
We do not have to add more parameter to this method and related ones as
new structures are added & needed for translation.
* Add symbol only when PTC is enabled
Address LDj3SNuD's feedback
* Change `NativeContext.Running` to a 32-bit integer
* Fix PageTable symbol for host mapped
556 lines
18 KiB
C#
556 lines
18 KiB
C#
using ARMeilleure.Common;
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using ARMeilleure.Decoders;
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using ARMeilleure.Diagnostics;
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using ARMeilleure.Instructions;
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Memory;
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using ARMeilleure.Signal;
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using ARMeilleure.State;
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using ARMeilleure.Translation.Cache;
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using ARMeilleure.Translation.PTC;
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using Ryujinx.Common;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Runtime;
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using System.Threading;
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using static ARMeilleure.Common.BitMapPool;
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using static ARMeilleure.IntermediateRepresentation.OperandHelper;
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using static ARMeilleure.IntermediateRepresentation.OperationHelper;
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namespace ARMeilleure.Translation
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{
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public class Translator
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{
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private static readonly AddressTable<ulong>.Level[] Levels64Bit =
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new AddressTable<ulong>.Level[]
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{
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new(31, 17),
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new(23, 8),
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new(15, 8),
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new( 7, 8),
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new( 2, 5)
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};
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private static readonly AddressTable<ulong>.Level[] Levels32Bit =
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new AddressTable<ulong>.Level[]
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{
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new(31, 17),
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new(23, 8),
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new(15, 8),
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new( 7, 8),
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new( 1, 6)
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};
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private readonly IJitMemoryAllocator _allocator;
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private readonly ConcurrentQueue<KeyValuePair<ulong, TranslatedFunction>> _oldFuncs;
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private readonly ConcurrentDictionary<ulong, object> _backgroundSet;
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private readonly ConcurrentStack<RejitRequest> _backgroundStack;
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private readonly AutoResetEvent _backgroundTranslatorEvent;
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private readonly ReaderWriterLock _backgroundTranslatorLock;
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internal ConcurrentDictionary<ulong, TranslatedFunction> Functions { get; }
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internal AddressTable<ulong> FunctionTable { get; }
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internal EntryTable<uint> CountTable { get; }
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internal TranslatorStubs Stubs { get; }
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internal IMemoryManager Memory { get; }
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private volatile int _threadCount;
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// FIXME: Remove this once the init logic of the emulator will be redone.
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public static readonly ManualResetEvent IsReadyForTranslation = new(false);
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public Translator(IJitMemoryAllocator allocator, IMemoryManager memory, bool for64Bits)
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{
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_allocator = allocator;
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Memory = memory;
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_oldFuncs = new ConcurrentQueue<KeyValuePair<ulong, TranslatedFunction>>();
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_backgroundSet = new ConcurrentDictionary<ulong, object>();
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_backgroundStack = new ConcurrentStack<RejitRequest>();
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_backgroundTranslatorEvent = new AutoResetEvent(false);
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_backgroundTranslatorLock = new ReaderWriterLock();
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JitCache.Initialize(allocator);
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CountTable = new EntryTable<uint>();
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Functions = new ConcurrentDictionary<ulong, TranslatedFunction>();
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FunctionTable = new AddressTable<ulong>(for64Bits ? Levels64Bit : Levels32Bit);
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Stubs = new TranslatorStubs(this);
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FunctionTable.Fill = (ulong)Stubs.SlowDispatchStub;
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if (memory.Type.IsHostMapped())
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{
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NativeSignalHandler.InitializeSignalHandler();
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}
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}
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private void TranslateStackedSubs()
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{
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while (_threadCount != 0)
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{
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_backgroundTranslatorLock.AcquireReaderLock(Timeout.Infinite);
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if (_backgroundStack.TryPop(out RejitRequest request) &&
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_backgroundSet.TryRemove(request.Address, out _))
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{
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TranslatedFunction func = Translate(request.Address, request.Mode, highCq: true);
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Functions.AddOrUpdate(request.Address, func, (key, oldFunc) =>
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{
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EnqueueForDeletion(key, oldFunc);
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return func;
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});
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if (PtcProfiler.Enabled)
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{
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PtcProfiler.UpdateEntry(request.Address, request.Mode, highCq: true);
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}
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RegisterFunction(request.Address, func);
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_backgroundTranslatorLock.ReleaseReaderLock();
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}
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else
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{
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_backgroundTranslatorLock.ReleaseReaderLock();
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_backgroundTranslatorEvent.WaitOne();
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}
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}
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// Wake up any other background translator threads, to encourage them to exit.
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_backgroundTranslatorEvent.Set();
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}
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public void Execute(State.ExecutionContext context, ulong address)
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{
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if (Interlocked.Increment(ref _threadCount) == 1)
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{
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IsReadyForTranslation.WaitOne();
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if (Ptc.State == PtcState.Enabled)
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{
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Debug.Assert(Functions.Count == 0);
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Ptc.LoadTranslations(this);
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Ptc.MakeAndSaveTranslations(this);
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}
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PtcProfiler.Start();
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Ptc.Disable();
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// Simple heuristic, should be user configurable in future. (1 for 4 core/ht or less, 2 for 6 core + ht
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// etc). All threads are normal priority except from the last, which just fills as much of the last core
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// as the os lets it with a low priority. If we only have one rejit thread, it should be normal priority
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// as highCq code is performance critical.
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//
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// TODO: Use physical cores rather than logical. This only really makes sense for processors with
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// hyperthreading. Requires OS specific code.
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int unboundedThreadCount = Math.Max(1, (Environment.ProcessorCount - 6) / 3);
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int threadCount = Math.Min(4, unboundedThreadCount);
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for (int i = 0; i < threadCount; i++)
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{
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bool last = i != 0 && i == unboundedThreadCount - 1;
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Thread backgroundTranslatorThread = new Thread(TranslateStackedSubs)
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{
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Name = "CPU.BackgroundTranslatorThread." + i,
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Priority = last ? ThreadPriority.Lowest : ThreadPriority.Normal
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};
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backgroundTranslatorThread.Start();
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}
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}
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Statistics.InitializeTimer();
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NativeInterface.RegisterThread(context, Memory, this);
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if (Optimizations.UseUnmanagedDispatchLoop)
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{
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Stubs.DispatchLoop(context.NativeContextPtr, address);
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}
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else
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{
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do
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{
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address = ExecuteSingle(context, address);
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}
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while (context.Running && address != 0);
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}
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NativeInterface.UnregisterThread();
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if (Interlocked.Decrement(ref _threadCount) == 0)
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{
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_backgroundTranslatorEvent.Set();
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ClearJitCache();
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DisposePools();
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Stubs.Dispose();
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FunctionTable.Dispose();
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CountTable.Dispose();
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GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce;
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}
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}
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public ulong ExecuteSingle(State.ExecutionContext context, ulong address)
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{
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TranslatedFunction func = GetOrTranslate(address, context.ExecutionMode);
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Statistics.StartTimer();
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ulong nextAddr = func.Execute(context);
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Statistics.StopTimer(address);
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return nextAddr;
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}
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internal TranslatedFunction GetOrTranslate(ulong address, ExecutionMode mode)
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{
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if (!Functions.TryGetValue(address, out TranslatedFunction func))
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{
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func = Translate(address, mode, highCq: false);
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TranslatedFunction oldFunc = Functions.GetOrAdd(address, func);
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if (oldFunc != func)
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{
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JitCache.Unmap(func.FuncPtr);
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func = oldFunc;
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}
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if (PtcProfiler.Enabled)
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{
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PtcProfiler.AddEntry(address, mode, highCq: false);
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}
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RegisterFunction(address, func);
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}
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return func;
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}
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internal void RegisterFunction(ulong guestAddress, TranslatedFunction func)
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{
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if (FunctionTable.IsValid(guestAddress) && (Optimizations.AllowLcqInFunctionTable || func.HighCq))
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{
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Volatile.Write(ref FunctionTable.GetValue(guestAddress), (ulong)func.FuncPtr);
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}
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}
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internal TranslatedFunction Translate(ulong address, ExecutionMode mode, bool highCq)
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{
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var context = new ArmEmitterContext(
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Memory,
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CountTable,
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FunctionTable,
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Stubs,
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address,
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highCq,
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mode: Aarch32Mode.User);
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Logger.StartPass(PassName.Decoding);
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Block[] blocks = Decoder.Decode(Memory, address, mode, highCq, singleBlock: false);
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Logger.EndPass(PassName.Decoding);
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PreparePool(highCq ? 1 : 0);
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Logger.StartPass(PassName.Translation);
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EmitSynchronization(context);
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if (blocks[0].Address != address)
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{
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context.Branch(context.GetLabel(address));
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}
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ControlFlowGraph cfg = EmitAndGetCFG(context, blocks, out Range funcRange, out Counter<uint> counter);
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ulong funcSize = funcRange.End - funcRange.Start;
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Logger.EndPass(PassName.Translation);
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Logger.StartPass(PassName.RegisterUsage);
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RegisterUsage.RunPass(cfg, mode);
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Logger.EndPass(PassName.RegisterUsage);
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OperandType[] argTypes = new OperandType[] { OperandType.I64 };
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CompilerOptions options = highCq ? CompilerOptions.HighCq : CompilerOptions.None;
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GuestFunction func;
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if (!context.HasPtc)
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{
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func = Compiler.Compile<GuestFunction>(cfg, argTypes, OperandType.I64, options);
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ResetPool(highCq ? 1 : 0);
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}
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else
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{
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using PtcInfo ptcInfo = new PtcInfo();
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func = Compiler.Compile<GuestFunction>(cfg, argTypes, OperandType.I64, options, ptcInfo);
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ResetPool(highCq ? 1 : 0);
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Hash128 hash = Ptc.ComputeHash(Memory, address, funcSize);
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Ptc.WriteInfoCodeRelocUnwindInfo(address, funcSize, hash, highCq, ptcInfo);
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}
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return new TranslatedFunction(func, counter, funcSize, highCq);
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}
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internal static void PreparePool(int groupId = 0)
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{
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PrepareOperandPool(groupId);
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PrepareOperationPool(groupId);
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}
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internal static void ResetPool(int groupId = 0)
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{
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ResetOperationPool(groupId);
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ResetOperandPool(groupId);
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}
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internal static void DisposePools()
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{
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DisposeOperandPools();
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DisposeOperationPools();
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DisposeBitMapPools();
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}
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private struct Range
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{
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public ulong Start { get; }
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public ulong End { get; }
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public Range(ulong start, ulong end)
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{
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Start = start;
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End = end;
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}
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}
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private static ControlFlowGraph EmitAndGetCFG(
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ArmEmitterContext context,
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Block[] blocks,
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out Range range,
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out Counter<uint> counter)
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{
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counter = null;
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ulong rangeStart = ulong.MaxValue;
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ulong rangeEnd = 0;
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for (int blkIndex = 0; blkIndex < blocks.Length; blkIndex++)
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{
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Block block = blocks[blkIndex];
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if (!block.Exit)
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{
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if (rangeStart > block.Address)
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{
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rangeStart = block.Address;
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}
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if (rangeEnd < block.EndAddress)
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{
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rangeEnd = block.EndAddress;
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}
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}
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if (block.Address == context.EntryAddress && !context.HighCq)
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{
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EmitRejitCheck(context, out counter);
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}
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context.CurrBlock = block;
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context.MarkLabel(context.GetLabel(block.Address));
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if (block.Exit)
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{
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// Left option here as it may be useful if we need to return to managed rather than tail call in
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// future. (eg. for debug)
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bool useReturns = false;
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InstEmitFlowHelper.EmitVirtualJump(context, Const(block.Address), isReturn: useReturns);
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}
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else
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{
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for (int opcIndex = 0; opcIndex < block.OpCodes.Count; opcIndex++)
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{
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OpCode opCode = block.OpCodes[opcIndex];
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context.CurrOp = opCode;
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bool isLastOp = opcIndex == block.OpCodes.Count - 1;
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if (isLastOp && block.Branch != null && !block.Branch.Exit && block.Branch.Address <= block.Address)
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{
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EmitSynchronization(context);
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}
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Operand lblPredicateSkip = null;
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if (opCode is OpCode32 op && op.Cond < Condition.Al)
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{
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lblPredicateSkip = Label();
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InstEmitFlowHelper.EmitCondBranch(context, lblPredicateSkip, op.Cond.Invert());
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}
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if (opCode.Instruction.Emitter != null)
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{
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opCode.Instruction.Emitter(context);
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}
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else
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{
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throw new InvalidOperationException($"Invalid instruction \"{opCode.Instruction.Name}\".");
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}
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if (lblPredicateSkip != null)
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{
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context.MarkLabel(lblPredicateSkip);
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}
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}
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}
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}
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range = new Range(rangeStart, rangeEnd);
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return context.GetControlFlowGraph();
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}
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internal static void EmitRejitCheck(ArmEmitterContext context, out Counter<uint> counter)
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{
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const int MinsCallForRejit = 100;
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counter = new Counter<uint>(context.CountTable);
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Operand lblEnd = Label();
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Operand address = !context.HasPtc ?
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Const(ref counter.Value) :
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Const(ref counter.Value, Ptc.CountTableSymbol);
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Operand curCount = context.Load(OperandType.I32, address);
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Operand count = context.Add(curCount, Const(1));
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context.Store(address, count);
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context.BranchIf(lblEnd, curCount, Const(MinsCallForRejit), Comparison.NotEqual, BasicBlockFrequency.Cold);
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context.Call(typeof(NativeInterface).GetMethod(nameof(NativeInterface.EnqueueForRejit)), Const(context.EntryAddress));
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context.MarkLabel(lblEnd);
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}
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internal static void EmitSynchronization(EmitterContext context)
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{
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long countOffs = NativeContext.GetCounterOffset();
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Operand lblNonZero = Label();
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Operand lblExit = Label();
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Operand countAddr = context.Add(context.LoadArgument(OperandType.I64, 0), Const(countOffs));
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Operand count = context.Load(OperandType.I32, countAddr);
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context.BranchIfTrue(lblNonZero, count, BasicBlockFrequency.Cold);
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Operand running = context.Call(typeof(NativeInterface).GetMethod(nameof(NativeInterface.CheckSynchronization)));
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context.BranchIfTrue(lblExit, running, BasicBlockFrequency.Cold);
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context.Return(Const(0L));
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context.MarkLabel(lblNonZero);
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count = context.Subtract(count, Const(1));
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context.Store(countAddr, count);
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context.MarkLabel(lblExit);
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}
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public void InvalidateJitCacheRegion(ulong address, ulong size)
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{
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// If rejit is running, stop it as it may be trying to rejit a function on the invalidated region.
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ClearRejitQueue(allowRequeue: true);
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// TODO: Completely remove functions overlapping the specified range from the cache.
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}
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internal void EnqueueForRejit(ulong guestAddress, ExecutionMode mode)
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{
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if (_backgroundSet.TryAdd(guestAddress, null))
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{
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_backgroundStack.Push(new RejitRequest(guestAddress, mode));
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_backgroundTranslatorEvent.Set();
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}
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}
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private void EnqueueForDeletion(ulong guestAddress, TranslatedFunction func)
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{
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_oldFuncs.Enqueue(new(guestAddress, func));
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}
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private void ClearJitCache()
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{
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// Ensure no attempt will be made to compile new functions due to rejit.
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ClearRejitQueue(allowRequeue: false);
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foreach (var func in Functions.Values)
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{
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JitCache.Unmap(func.FuncPtr);
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func.CallCounter?.Dispose();
|
|
}
|
|
|
|
Functions.Clear();
|
|
|
|
while (_oldFuncs.TryDequeue(out var kv))
|
|
{
|
|
JitCache.Unmap(kv.Value.FuncPtr);
|
|
|
|
kv.Value.CallCounter?.Dispose();
|
|
}
|
|
}
|
|
|
|
private void ClearRejitQueue(bool allowRequeue)
|
|
{
|
|
_backgroundTranslatorLock.AcquireWriterLock(Timeout.Infinite);
|
|
|
|
if (allowRequeue)
|
|
{
|
|
while (_backgroundStack.TryPop(out var request))
|
|
{
|
|
if (Functions.TryGetValue(request.Address, out var func) && func.CallCounter != null)
|
|
{
|
|
Volatile.Write(ref func.CallCounter.Value, 0);
|
|
}
|
|
|
|
_backgroundSet.TryRemove(request.Address, out _);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_backgroundStack.Clear();
|
|
}
|
|
|
|
_backgroundTranslatorLock.ReleaseWriterLock();
|
|
}
|
|
}
|
|
}
|