mirror of
https://github.com/Ryujinx/Ryujinx.git
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* Implement speculative translation on the cpu, and change the way how branches to unknown or untranslated addresses works * Port t0opt changes and other cleanups * Change namespace from translation related classes to ChocolArm64.Translation, other minor tweaks * Fix typo * Translate higher quality code for indirect jumps aswell, and on some cases that were missed when lower quality (tier 0) code was available * Remove debug print * Remove direct argument passing optimization, and enable tail calls for BR instructions * Call delegates directly with Callvirt rather than calling Execute, do not emit calls for tier 0 code * Remove unused property * Rename argument on ArmSubroutine delegate
188 lines
5.7 KiB
C#
188 lines
5.7 KiB
C#
using ChocolArm64.Decoders;
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using ChocolArm64.Events;
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using ChocolArm64.Memory;
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using ChocolArm64.State;
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using System;
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using System.Threading;
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namespace ChocolArm64.Translation
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{
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public class Translator
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{
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private MemoryManager _memory;
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private CpuThreadState _dummyThreadState;
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private TranslatorCache _cache;
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private TranslatorQueue _queue;
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private Thread _backgroundTranslator;
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public event EventHandler<CpuTraceEventArgs> CpuTrace;
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public bool EnableCpuTrace { get; set; }
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private volatile int _threadCount;
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public Translator(MemoryManager memory)
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{
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_memory = memory;
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_dummyThreadState = new CpuThreadState();
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_dummyThreadState.Running = false;
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_cache = new TranslatorCache();
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_queue = new TranslatorQueue();
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}
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internal void ExecuteSubroutine(CpuThread thread, long position)
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{
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if (Interlocked.Increment(ref _threadCount) == 1)
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{
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_backgroundTranslator = new Thread(TranslateQueuedSubs);
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_backgroundTranslator.Start();
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}
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ExecuteSubroutine(thread.ThreadState, position);
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if (Interlocked.Decrement(ref _threadCount) == 0)
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{
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_queue.ForceSignal();
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}
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}
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private void ExecuteSubroutine(CpuThreadState state, long position)
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{
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state.CurrentTranslator = this;
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do
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{
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if (EnableCpuTrace)
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{
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CpuTrace?.Invoke(this, new CpuTraceEventArgs(position));
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}
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TranslatedSub subroutine = GetOrTranslateSubroutine(state, position);
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position = subroutine.Execute(state, _memory);
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}
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while (position != 0 && state.Running);
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state.CurrentTranslator = null;
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}
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internal void TranslateVirtualSubroutine(CpuThreadState state, long position)
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{
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if (!_cache.TryGetSubroutine(position, out TranslatedSub sub) || sub.Tier == TranslationTier.Tier0)
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{
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_queue.Enqueue(new TranslatorQueueItem(position, state.GetExecutionMode(), TranslationTier.Tier1));
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}
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}
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internal ArmSubroutine GetOrTranslateVirtualSubroutine(CpuThreadState state, long position)
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{
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if (!_cache.TryGetSubroutine(position, out TranslatedSub sub))
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{
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sub = TranslateLowCq(position, state.GetExecutionMode());
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}
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if (sub.Tier == TranslationTier.Tier0)
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{
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_queue.Enqueue(new TranslatorQueueItem(position, state.GetExecutionMode(), TranslationTier.Tier1));
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}
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return sub.Delegate;
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}
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internal TranslatedSub GetOrTranslateSubroutine(CpuThreadState state, long position)
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{
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if (!_cache.TryGetSubroutine(position, out TranslatedSub subroutine))
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{
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subroutine = TranslateLowCq(position, state.GetExecutionMode());
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}
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return subroutine;
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}
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private void TranslateQueuedSubs()
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{
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while (_threadCount != 0)
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{
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if (_queue.TryDequeue(out TranslatorQueueItem item))
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{
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bool isCached = _cache.TryGetSubroutine(item.Position, out TranslatedSub sub);
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if (isCached && item.Tier <= sub.Tier)
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{
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continue;
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}
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if (item.Tier == TranslationTier.Tier0)
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{
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TranslateLowCq(item.Position, item.Mode);
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}
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else
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{
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TranslateHighCq(item.Position, item.Mode);
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}
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}
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else
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{
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_queue.WaitForItems();
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}
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}
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}
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private TranslatedSub TranslateLowCq(long position, ExecutionMode mode)
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{
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Block block = Decoder.DecodeBasicBlock(_memory, position, mode);
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ILEmitterCtx context = new ILEmitterCtx(_cache, _queue, TranslationTier.Tier0, block);
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string subName = GetSubroutineName(position);
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ILMethodBuilder ilMthdBuilder = new ILMethodBuilder(context.GetILBlocks(), subName);
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TranslatedSub subroutine = ilMthdBuilder.GetSubroutine(TranslationTier.Tier0);
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return _cache.GetOrAdd(position, subroutine, block.OpCodes.Count);
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}
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private void TranslateHighCq(long position, ExecutionMode mode)
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{
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Block graph = Decoder.DecodeSubroutine(_memory, position, mode);
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ILEmitterCtx context = new ILEmitterCtx(_cache, _queue, TranslationTier.Tier1, graph);
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ILBlock[] ilBlocks = context.GetILBlocks();
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string subName = GetSubroutineName(position);
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ILMethodBuilder ilMthdBuilder = new ILMethodBuilder(ilBlocks, subName);
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TranslatedSub subroutine = ilMthdBuilder.GetSubroutine(TranslationTier.Tier1);
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int ilOpCount = 0;
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foreach (ILBlock ilBlock in ilBlocks)
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{
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ilOpCount += ilBlock.Count;
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}
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_cache.AddOrUpdate(position, subroutine, ilOpCount);
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ForceAheadOfTimeCompilation(subroutine);
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}
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private string GetSubroutineName(long position)
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{
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return $"Sub{position:x16}";
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}
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private void ForceAheadOfTimeCompilation(TranslatedSub subroutine)
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{
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subroutine.Execute(_dummyThreadState, null);
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}
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}
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} |