429 lines
14 KiB
C#
429 lines
14 KiB
C#
using ChocolArm64.State;
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using Ryujinx.Core.Logging;
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using Ryujinx.Core.OsHle.Handles;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using static Ryujinx.Core.OsHle.ErrorCode;
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namespace Ryujinx.Core.OsHle.Kernel
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{
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partial class SvcHandler
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{
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private const int MutexHasListenersMask = 0x40000000;
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private void SvcArbitrateLock(AThreadState ThreadState)
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{
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int OwnerThreadHandle = (int)ThreadState.X0;
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long MutexAddress = (long)ThreadState.X1;
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int WaitThreadHandle = (int)ThreadState.X2;
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Ns.Log.PrintDebug(LogClass.KernelSvc,
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"OwnerThreadHandle = " + OwnerThreadHandle.ToString("x8") + ", " +
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"MutexAddress = " + MutexAddress .ToString("x16") + ", " +
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"WaitThreadHandle = " + WaitThreadHandle .ToString("x8"));
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if (IsPointingInsideKernel(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAddress);
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return;
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}
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if (IsWordAddressUnaligned(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Unaligned mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAlignment);
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return;
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}
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KThread OwnerThread = Process.HandleTable.GetData<KThread>(OwnerThreadHandle);
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if (OwnerThread == null)
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid owner thread handle 0x{OwnerThreadHandle:x8}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
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return;
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}
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KThread WaitThread = Process.HandleTable.GetData<KThread>(WaitThreadHandle);
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if (WaitThread == null)
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid requesting thread handle 0x{WaitThreadHandle:x8}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
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return;
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}
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KThread CurrThread = Process.GetThread(ThreadState.Tpidr);
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MutexLock(CurrThread, WaitThread, OwnerThreadHandle, WaitThreadHandle, MutexAddress);
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ThreadState.X0 = 0;
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}
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private void SvcArbitrateUnlock(AThreadState ThreadState)
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{
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long MutexAddress = (long)ThreadState.X0;
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Ns.Log.PrintDebug(LogClass.KernelSvc, "MutexAddress = " + MutexAddress.ToString("x16"));
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if (IsPointingInsideKernel(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAddress);
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return;
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}
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if (IsWordAddressUnaligned(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Unaligned mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAlignment);
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return;
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}
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if (MutexUnlock(Process.GetThread(ThreadState.Tpidr), MutexAddress))
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{
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Process.Scheduler.Yield(Process.GetThread(ThreadState.Tpidr));
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}
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ThreadState.X0 = 0;
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}
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private void SvcWaitProcessWideKeyAtomic(AThreadState ThreadState)
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{
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long MutexAddress = (long)ThreadState.X0;
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long CondVarAddress = (long)ThreadState.X1;
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int ThreadHandle = (int)ThreadState.X2;
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ulong Timeout = ThreadState.X3;
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Ns.Log.PrintDebug(LogClass.KernelSvc,
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"MutexAddress = " + MutexAddress .ToString("x16") + ", " +
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"CondVarAddress = " + CondVarAddress.ToString("x16") + ", " +
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"ThreadHandle = " + ThreadHandle .ToString("x8") + ", " +
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"Timeout = " + Timeout .ToString("x16"));
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if (IsPointingInsideKernel(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAddress);
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return;
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}
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if (IsWordAddressUnaligned(MutexAddress))
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Unaligned mutex address 0x{MutexAddress:x16}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAlignment);
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return;
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}
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KThread Thread = Process.HandleTable.GetData<KThread>(ThreadHandle);
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if (Thread == null)
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid thread handle 0x{ThreadHandle:x8}!");
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
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return;
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}
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KThread CurrThread = Process.GetThread(ThreadState.Tpidr);
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MutexUnlock(CurrThread, MutexAddress);
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if (!CondVarWait(CurrThread, ThreadHandle, MutexAddress, CondVarAddress, Timeout))
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{
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ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.Timeout);
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return;
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}
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Process.Scheduler.Yield(Process.GetThread(ThreadState.Tpidr));
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ThreadState.X0 = 0;
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}
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private void SvcSignalProcessWideKey(AThreadState ThreadState)
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{
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long CondVarAddress = (long)ThreadState.X0;
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int Count = (int)ThreadState.X1;
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CondVarSignal(CondVarAddress, Count);
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ThreadState.X0 = 0;
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}
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private void MutexLock(
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KThread CurrThread,
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KThread WaitThread,
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int OwnerThreadHandle,
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int WaitThreadHandle,
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long MutexAddress)
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{
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int MutexValue = Process.Memory.ReadInt32(MutexAddress);
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Ns.Log.PrintDebug(LogClass.KernelSvc, "MutexValue = " + MutexValue.ToString("x8"));
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lock (Process.ThreadSyncLock)
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{
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if (MutexValue != (OwnerThreadHandle | MutexHasListenersMask))
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{
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return;
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}
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CurrThread.WaitHandle = WaitThreadHandle;
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CurrThread.MutexAddress = MutexAddress;
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InsertWaitingMutexThread(OwnerThreadHandle, WaitThread);
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}
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Ns.Log.PrintDebug(LogClass.KernelSvc, "Entering wait state...");
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Process.Scheduler.EnterWait(CurrThread);
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}
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private bool MutexUnlock(KThread CurrThread, long MutexAddress)
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{
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if (CurrThread == null)
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid mutex 0x{MutexAddress:x16}!");
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return false;
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}
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lock (Process.ThreadSyncLock)
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{
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//This is the new thread that will not own the mutex.
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//If no threads are waiting for the lock, then it should be null.
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KThread OwnerThread = GetHighestPriority(CurrThread.MutexWaiters, MutexAddress);
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if (OwnerThread != null)
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{
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//Remove all waiting mutex from the old owner,
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//and insert then on the new owner.
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UpdateMutexOwner(CurrThread, OwnerThread, MutexAddress);
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CurrThread.UpdatePriority();
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OwnerThread.UpdatePriority();
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int HasListeners = OwnerThread.MutexWaiters.Count > 0 ? MutexHasListenersMask : 0;
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Process.Memory.WriteInt32(MutexAddress, HasListeners | OwnerThread.WaitHandle);
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OwnerThread.WaitHandle = 0;
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OwnerThread.MutexAddress = 0;
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OwnerThread.CondVarAddress = 0;
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OwnerThread.MutexOwner = null;
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OwnerThread.UpdatePriority();
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Process.Scheduler.WakeUp(OwnerThread);
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Ns.Log.PrintDebug(LogClass.KernelSvc, "Gave mutex to thread id " + OwnerThread.ThreadId + "!");
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return true;
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}
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else
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{
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Process.Memory.WriteInt32(MutexAddress, 0);
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Ns.Log.PrintDebug(LogClass.KernelSvc, "No threads waiting mutex!");
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return false;
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}
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}
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}
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private bool CondVarWait(
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KThread WaitThread,
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int WaitThreadHandle,
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long MutexAddress,
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long CondVarAddress,
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ulong Timeout)
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{
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WaitThread.WaitHandle = WaitThreadHandle;
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WaitThread.MutexAddress = MutexAddress;
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WaitThread.CondVarAddress = CondVarAddress;
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lock (Process.ThreadArbiterListLock)
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{
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Process.ThreadArbiterList.Add(WaitThread);
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}
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Ns.Log.PrintDebug(LogClass.KernelSvc, "Entering wait state...");
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if (Timeout != ulong.MaxValue)
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{
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return Process.Scheduler.EnterWait(WaitThread, NsTimeConverter.GetTimeMs(Timeout));
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}
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else
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{
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Process.Scheduler.EnterWait(WaitThread);
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return true;
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}
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}
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private void CondVarSignal(long CondVarAddress, int Count)
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{
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lock (Process.ThreadArbiterListLock)
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{
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KThread CurrThread = GetHighestPriority(CondVarAddress);
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while (CurrThread != null && (Count == -1 || Count-- > 0))
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{
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AcquireMutexValue(CurrThread.MutexAddress);
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int MutexValue = Process.Memory.ReadInt32(CurrThread.MutexAddress);
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if (MutexValue == 0)
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{
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//Give the lock to this thread.
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Process.Memory.WriteInt32(CurrThread.MutexAddress, CurrThread.WaitHandle);
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CurrThread.WaitHandle = 0;
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CurrThread.MutexAddress = 0;
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CurrThread.CondVarAddress = 0;
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CurrThread.MutexOwner?.UpdatePriority();
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CurrThread.MutexOwner = null;
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Process.Scheduler.WakeUp(CurrThread);
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}
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else
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{
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//Wait until the lock is released.
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MutexValue &= ~MutexHasListenersMask;
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InsertWaitingMutexThread(MutexValue, CurrThread);
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MutexValue |= MutexHasListenersMask;
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Process.Memory.WriteInt32(CurrThread.MutexAddress, MutexValue);
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}
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ReleaseMutexValue(CurrThread.MutexAddress);
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CurrThread = GetHighestPriority(CondVarAddress);
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}
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}
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}
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private void InsertWaitingMutexThread(int OwnerThreadHandle, KThread WaitThread)
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{
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KThread OwnerThread = Process.HandleTable.GetData<KThread>(OwnerThreadHandle);
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if (OwnerThread == null)
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{
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Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid thread handle 0x{OwnerThreadHandle:x8}!");
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return;
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}
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InsertWaitingMutexThread(OwnerThread, WaitThread);
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}
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private void InsertWaitingMutexThread(KThread OwnerThread, KThread WaitThread)
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{
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lock (Process.ThreadSyncLock)
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{
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WaitThread.MutexOwner = OwnerThread;
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if (!OwnerThread.MutexWaiters.Contains(WaitThread))
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{
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OwnerThread.MutexWaiters.Add(WaitThread);
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OwnerThread.UpdatePriority();
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}
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}
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}
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private void UpdateMutexOwner(KThread CurrThread, KThread NewOwner, long MutexAddress)
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{
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//Go through all threads waiting for the mutex,
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//and update the MutexOwner field to point to the new owner.
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lock (Process.ThreadSyncLock)
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{
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for (int Index = 0; Index < CurrThread.MutexWaiters.Count; Index++)
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{
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KThread Thread = CurrThread.MutexWaiters[Index];
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if (Thread.MutexAddress == MutexAddress)
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{
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CurrThread.MutexWaiters.RemoveAt(Index--);
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Thread.MutexOwner = NewOwner;
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NewOwner.MutexWaiters.Add(Thread);
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}
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}
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}
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}
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private KThread GetHighestPriority(List<KThread> Threads, long MutexAddress)
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{
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return GetHighestPriority(Threads, x => x.MutexAddress == MutexAddress);
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}
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private KThread GetHighestPriority(long CondVarAddress)
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{
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return GetHighestPriority(Process.ThreadArbiterList, x => x.CondVarAddress == CondVarAddress);
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}
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private KThread GetHighestPriority(List<KThread> Threads, Func<KThread, bool> Predicate)
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{
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KThread Thread = Threads.OrderBy(x => x.ActualPriority).FirstOrDefault(Predicate);
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if (Thread != null)
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{
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Threads.Remove(Thread);
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}
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return Thread;
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}
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private void AcquireMutexValue(long MutexAddress)
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{
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while (!Process.Memory.AcquireAddress(MutexAddress))
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{
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Thread.Yield();
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}
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}
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private void ReleaseMutexValue(long MutexAddress)
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{
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Process.Memory.ReleaseAddress(MutexAddress);
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}
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private bool IsPointingInsideKernel(long Address)
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{
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return ((ulong)Address + 0x1000000000) < 0xffffff000;
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}
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private bool IsWordAddressUnaligned(long Address)
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{
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return (Address & 3) != 0;
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}
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}
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} |