Ryujinx/Ryujinx.Core/OsHle/Process.cs

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using ChocolArm64;
using ChocolArm64.Events;
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using ChocolArm64.Memory;
using Ryujinx.Core.Loaders;
using Ryujinx.Core.Loaders.Executables;
using Ryujinx.Core.OsHle.Exceptions;
using Ryujinx.Core.OsHle.Handles;
using Ryujinx.Core.OsHle.Svc;
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using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
namespace Ryujinx.Core.OsHle
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{
class Process : IDisposable
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{
private const int TlsSize = 0x200;
private const int TotalTlsSlots = 32;
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private Switch Ns;
public bool NeedsHbAbi { get; private set; }
public long HbAbiDataPosition { get; private set; }
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public int ProcessId { get; private set; }
private ATranslator Translator;
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public AMemory Memory { get; private set; }
public ServiceMgr Services { get; private set; }
public KProcessScheduler Scheduler { get; private set; }
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public KProcessHandleTable HandleTable { get; private set; }
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private SvcHandler SvcHandler;
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private ConcurrentDictionary<int, AThread> TlsSlots;
private ConcurrentDictionary<long, HThread> ThreadsByTpidr;
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private List<Executable> Executables;
private HThread MainThread;
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private long ImageBase;
private bool ShouldDispose;
private bool Disposed;
public Process(Switch Ns, int ProcessId)
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{
this.Ns = Ns;
this.ProcessId = ProcessId;
Memory = new AMemory();
Services = new ServiceMgr();
HandleTable = new KProcessHandleTable();
Scheduler = new KProcessScheduler();
SvcHandler = new SvcHandler(Ns, this);
TlsSlots = new ConcurrentDictionary<int, AThread>();
ThreadsByTpidr = new ConcurrentDictionary<long, HThread>();
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Executables = new List<Executable>();
ImageBase = MemoryRegions.AddrSpaceStart;
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MapRWMemRegion(
MemoryRegions.TlsPagesAddress,
MemoryRegions.TlsPagesSize,
MemoryType.ThreadLocal);
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}
public void LoadProgram(IExecutable Program)
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{
if (Disposed)
{
throw new ObjectDisposedException(nameof(Process));
}
Logging.Info($"Image base at 0x{ImageBase:x16}.");
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Executable Executable = new Executable(Program, Memory, ImageBase);
Executables.Add(Executable);
ImageBase = AMemoryHelper.PageRoundUp(Executable.ImageEnd);
}
public void SetEmptyArgs()
{
//TODO: This should be part of Run.
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ImageBase += AMemoryMgr.PageSize;
}
public bool Run(bool NeedsHbAbi = false)
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{
if (Disposed)
{
throw new ObjectDisposedException(nameof(Process));
}
this.NeedsHbAbi = NeedsHbAbi;
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if (Executables.Count == 0)
{
return false;
}
MapRWMemRegion(
MemoryRegions.MainStackAddress,
MemoryRegions.MainStackSize,
MemoryType.Normal);
long StackTop = MemoryRegions.MainStackAddress + MemoryRegions.MainStackSize;
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int Handle = MakeThread(Executables[0].ImageBase, StackTop, 0, 0, 0);
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if (Handle == -1)
{
return false;
}
MainThread = HandleTable.GetData<HThread>(Handle);
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if (NeedsHbAbi)
{
HbAbiDataPosition = AMemoryHelper.PageRoundUp(Executables[0].ImageEnd);
Homebrew.WriteHbAbiData(Memory, HbAbiDataPosition, Handle);
MainThread.Thread.ThreadState.X0 = (ulong)HbAbiDataPosition;
MainThread.Thread.ThreadState.X1 = ulong.MaxValue;
}
Scheduler.StartThread(MainThread);
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return true;
}
private void MapRWMemRegion(long Position, long Size, MemoryType Type)
{
Memory.Manager.Map(Position, Size, (int)Type, AMemoryPerm.RW);
}
public void StopAllThreadsAsync()
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{
if (Disposed)
{
throw new ObjectDisposedException(nameof(Process));
}
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if (MainThread != null)
{
MainThread.Thread.StopExecution();
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}
foreach (AThread Thread in TlsSlots.Values)
{
Thread.StopExecution();
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}
}
public int MakeThread(
long EntryPoint,
long StackTop,
long ArgsPtr,
int Priority,
int ProcessorId)
{
if (Disposed)
{
throw new ObjectDisposedException(nameof(Process));
}
AThread Thread = new AThread(GetTranslator(), Memory, EntryPoint);
HThread ThreadHnd = new HThread(Thread, ProcessorId, Priority);
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int Handle = HandleTable.OpenHandle(ThreadHnd);
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int ThreadId = GetFreeTlsSlot(Thread);
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long Tpidr = MemoryRegions.TlsPagesAddress + ThreadId * TlsSize;
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Thread.ThreadState.Break += BreakHandler;
Thread.ThreadState.SvcCall += SvcHandler.SvcCall;
Thread.ThreadState.Undefined += UndefinedHandler;
Thread.ThreadState.ProcessId = ProcessId;
Thread.ThreadState.ThreadId = ThreadId;
Thread.ThreadState.Tpidr = Tpidr;
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Thread.ThreadState.X0 = (ulong)ArgsPtr;
Thread.ThreadState.X1 = (ulong)Handle;
Thread.ThreadState.X31 = (ulong)StackTop;
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Thread.WorkFinished += ThreadFinished;
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ThreadsByTpidr.TryAdd(Thread.ThreadState.Tpidr, ThreadHnd);
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return Handle;
}
private void BreakHandler(object sender, AInstExceptionEventArgs e)
{
throw new GuestBrokeExecutionException();
}
private void UndefinedHandler(object sender, AInstUndefinedEventArgs e)
{
throw new UndefinedInstructionException(e.Position, e.RawOpCode);
}
private ATranslator GetTranslator()
{
if (Translator == null)
{
Dictionary<long, string> SymbolTable = new Dictionary<long, string>();
foreach (Executable Exe in Executables)
{
foreach (KeyValuePair<long, string> KV in Exe.SymbolTable)
{
SymbolTable.TryAdd(Exe.ImageBase + KV.Key, KV.Value);
}
}
Translator = new ATranslator(SymbolTable);
Translator.CpuTrace += CpuTraceHandler;
}
return Translator;
}
private void CpuTraceHandler(object sender, ACpuTraceEventArgs e)
{
string NsoName = string.Empty;
for (int Index = Executables.Count - 1; Index >= 0; Index--)
{
if (e.Position >= Executables[Index].ImageBase)
{
NsoName = $"{(e.Position - Executables[Index].ImageBase):x16}";
break;
}
}
Logging.Trace($"Executing at 0x{e.Position:x16} {e.SubName} {NsoName}");
}
public void EnableCpuTracing()
{
Translator.EnableCpuTrace = true;
}
public void DisableCpuTracing()
{
Translator.EnableCpuTrace = false;
}
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private int GetFreeTlsSlot(AThread Thread)
{
for (int Index = 1; Index < TotalTlsSlots; Index++)
{
if (TlsSlots.TryAdd(Index, Thread))
{
return Index;
}
}
throw new InvalidOperationException();
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}
private void ThreadFinished(object sender, EventArgs e)
{
if (sender is AThread Thread)
{
Logging.Info($"Thread {Thread.ThreadId} exiting...");
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TlsSlots.TryRemove(GetTlsSlot(Thread.ThreadState.Tpidr), out _);
}
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if (TlsSlots.Count == 0)
{
if (ShouldDispose)
{
Dispose();
}
Logging.Info($"No threads running, now exiting Process {ProcessId}...");
Ns.Os.ExitProcess(ProcessId);
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}
}
private int GetTlsSlot(long Position)
{
return (int)((Position - MemoryRegions.TlsPagesAddress) / TlsSize);
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}
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public HThread GetThread(long Tpidr)
{
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if (!ThreadsByTpidr.TryGetValue(Tpidr, out HThread Thread))
{
Logging.Error($"Thread with TPIDR 0x{Tpidr:x16} not found!");
}
return Thread;
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool Disposing)
{
if (Disposing && !Disposed)
{
//If there is still some thread running, disposing the objects is not
//safe as the thread may try to access those resources. Instead, we set
//the flag to have the Process disposed when all threads finishes.
//Note: This may not happen if the guest code gets stuck on a infinite loop.
if (TlsSlots.Count > 0)
{
ShouldDispose = true;
Logging.Info($"Process {ProcessId} waiting all threads terminate...");
return;
}
Disposed = true;
Services.Dispose();
HandleTable.Dispose();
Scheduler.Dispose();
SvcHandler.Dispose();
Memory.Dispose();
Logging.Info($"Process {ProcessId} exiting...");
}
}
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}
}