public static AOpCode DecodeOpCode(AThreadState State, AMemory Memory, long Position)
{
int OpCode = Memory.ReadInt32(Position);
AInst Inst;
if (State.ExecutionMode == AExecutionMode.AArch64)
{
Inst = AOpCodeTable.GetInstA64(OpCode);
}
else
{
//TODO: Thumb support.
Inst = AOpCodeTable.GetInstA32(OpCode);
}
AOpCode DecodedOpCode = new AOpCode(AInst.Undefined, Position, OpCode);
if (Inst.Type != null)
{
DecodedOpCode = MakeOpCode(Inst.Type, Inst, Position, OpCode);
}
return(DecodedOpCode);
}
private void UploadTexture(AMemory Memory, long BasePosition, int TexIndex, int HndIndex)
{
long Position = BasePosition + HndIndex * 4;
int TextureHandle = Memory.ReadInt32(Position);
int TicIndex = (TextureHandle >> 0) & 0xfffff;
int TscIndex = (TextureHandle >> 20) & 0xfff;
TryGetCpuAddr(NvGpuEngine3dReg.TexHeaderPoolOffset, out long TicPosition);
TryGetCpuAddr(NvGpuEngine3dReg.TexSamplerPoolOffset, out long TscPosition);
TicPosition += TicIndex * 0x20;
TscPosition += TscIndex * 0x20;
GalTextureSampler Sampler = TextureFactory.MakeSampler(Gpu, Memory, TscPosition);
long TextureAddress = Memory.ReadInt64(TicPosition + 4) & 0xffffffffffff;
if (FrameBuffers.Contains(TextureAddress))
{
//This texture is a frame buffer texture,
//we shouldn't read anything from memory and bind
//the frame buffer texture instead, since we're not
//really writing anything to memory.
Gpu.Renderer.BindFrameBufferTexture(TextureAddress, TexIndex, Sampler);
}
else
{
GalTexture Texture = TextureFactory.MakeTexture(Gpu, Memory, TicPosition);
Gpu.Renderer.SetTextureAndSampler(TexIndex, Texture, Sampler);
Gpu.Renderer.BindTexture(TexIndex);
}
}
public static ulong WaitForAddressIfLessThan(Process Process,
AThreadState ThreadState,
AMemory Memory,
long Address,
int Value,
ulong Timeout,
bool ShouldDecrement)
{
Memory.SetExclusive(ThreadState, Address);
int CurrentValue = Memory.ReadInt32(Address);
while (true)
{
if (Memory.TestExclusive(ThreadState, Address))
{
if (CurrentValue < Value)
{
if (ShouldDecrement)
{
Memory.WriteInt32(Address, CurrentValue - 1);
}
Memory.ClearExclusiveForStore(ThreadState);
}
else
{
Memory.ClearExclusiveForStore(ThreadState);
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidState));
}
break;
}
Memory.SetExclusive(ThreadState, Address);
CurrentValue = Memory.ReadInt32(Address);
}
if (Timeout == 0)
{
return(MakeError(ErrorModule.Kernel, KernelErr.Timeout));
}
return(WaitForAddress(Process, ThreadState, Address, Timeout));
}
public int ReadInt32()
{
int Value = Memory.ReadInt32(Position);
Position += 4;
return(Value);
}
private int ReadCb(AMemory Memory, int Cbuf, int Offset)
{
long Position = ConstBuffers[Cbuf].Position;
int Value = Memory.ReadInt32(Position + Offset);
return(Value);
}
private void FetchOpCode(AMemory Memory)
{
OpCode = PipeOp;
PipeOp = Memory.ReadInt32(Pc);
Pc += 4;
}
private static int[] ReadWords(AMemory Memory, long Position, int Count)
{
int[] Words = new int[Count];
for (int Index = 0; Index < Count; Index++, Position += 4)
{
Words[Index] = Memory.ReadInt32(Position);
}
return(Words);
}
private bool UserToKernelInt32(AMemory Memory, long Address, out int Value)
{
if (Memory.IsMapped(Address))
{
Value = Memory.ReadInt32(Address);
return(true);
}
Value = 0;
return(false);
}
public long ArbitrateLock(
Process Process,
AMemory Memory,
int OwnerHandle,
long MutexAddress,
int RequesterHandle)
{
System.CriticalSectionLock.Lock();
KThread CurrentThread = System.Scheduler.GetCurrentThread();
CurrentThread.SignaledObj = null;
CurrentThread.ObjSyncResult = 0;
int MutexValue = Memory.ReadInt32(MutexAddress);
if (MutexValue != (OwnerHandle | HasListenersMask))
{
System.CriticalSectionLock.Unlock();
return(0);
}
KThread MutexOwner = Process.HandleTable.GetData <KThread>(OwnerHandle);
if (MutexOwner == null)
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle));
}
CurrentThread.MutexAddress = MutexAddress;
CurrentThread.ThreadHandleForUserMutex = RequesterHandle;
MutexOwner.AddMutexWaiter(CurrentThread);
CurrentThread.Reschedule(ThreadSchedState.Paused);
System.CriticalSectionLock.Unlock();
System.CriticalSectionLock.Lock();
if (CurrentThread.MutexOwner != null)
{
CurrentThread.MutexOwner.TransferMutexTo(CurrentThread);
}
System.CriticalSectionLock.Unlock();
return((uint)CurrentThread.ObjSyncResult);
}
private void SendTexture(AMemory Memory)
{
long TicPos = (long)GetRegister(NsGpuRegister._3dTicAddressHigh) << 32 |
(long)GetRegister(NsGpuRegister._3dTicAddressLow) << 0;
int CbData = GetRegister(NsGpuRegister._3dCbData0);
int TicIndex = (CbData >> 0) & 0xfffff;
int TscIndex = (CbData >> 20) & 0xfff; //I guess?
TicPos = Gpu.MemoryMgr.GetCpuAddr(TicPos + TicIndex * 0x20);
if (TicPos != -1)
{
int Word0 = Memory.ReadInt32(TicPos + 0x0);
int Word1 = Memory.ReadInt32(TicPos + 0x4);
int Word2 = Memory.ReadInt32(TicPos + 0x8);
int Word3 = Memory.ReadInt32(TicPos + 0xc);
int Word4 = Memory.ReadInt32(TicPos + 0x10);
int Word5 = Memory.ReadInt32(TicPos + 0x14);
int Word6 = Memory.ReadInt32(TicPos + 0x18);
int Word7 = Memory.ReadInt32(TicPos + 0x1c);
long TexAddress = Word1;
TexAddress |= (long)(Word2 & 0xff) << 32;
TexAddress = Gpu.MemoryMgr.GetCpuAddr(TexAddress);
if (TexAddress != -1)
{
NsGpuTextureFormat Format = (NsGpuTextureFormat)(Word0 & 0x7f);
int Width = (Word4 & 0xffff) + 1;
int Height = (Word5 & 0xffff) + 1;
byte[] Buffer = GetDecodedTexture(Memory, Format, TexAddress, Width, Height);
if (Buffer != null)
{
Gpu.Renderer.QueueAction(delegate()
{
Gpu.Renderer.SendR8G8B8A8Texture(0, Buffer, Width, Height);
});
}
}
}
}
public void WaitForLock(AThread RequestingThread, int RequestingThreadHandle)
{
lock (EnterWaitLock)
{
int CurrentThreadHandle = Memory.ReadInt32(MutexAddress) & ~MutexHasListenersMask;
if (CurrentThreadHandle == RequestingThreadHandle ||
CurrentThreadHandle == 0)
{
return;
}
if (CurrRequestingThreadHandle == 0 || RequestingThread.Priority < HighestPriority)
{
CurrRequestingThreadHandle = RequestingThreadHandle;
HighestPriority = RequestingThread.Priority;
}
}
ThreadEvent.Reset();
ThreadEvent.WaitOne();
}
public Executable(IExecutable Exe, AMemory Memory, long ImageBase)
{
this.Memory = Memory;
this.ImageBase = ImageBase;
this.ImageEnd = ImageBase;
WriteData(ImageBase + Exe.TextOffset, Exe.Text, MemoryType.CodeStatic, AMemoryPerm.RX);
WriteData(ImageBase + Exe.ROOffset, Exe.RO, MemoryType.Normal, AMemoryPerm.Read);
WriteData(ImageBase + Exe.DataOffset, Exe.Data, MemoryType.Normal, AMemoryPerm.RW);
if (Exe.Mod0Offset == 0)
{
MapBss(ImageBase + Exe.DataOffset + Exe.Data.Count, Exe.BssSize);
return;
}
long Mod0Offset = ImageBase + Exe.Mod0Offset;
int Mod0Magic = Memory.ReadInt32(Mod0Offset + 0x0);
long DynamicOffset = Memory.ReadInt32(Mod0Offset + 0x4) + Mod0Offset;
long BssStartOffset = Memory.ReadInt32(Mod0Offset + 0x8) + Mod0Offset;
long BssEndOffset = Memory.ReadInt32(Mod0Offset + 0xc) + Mod0Offset;
long EhHdrStartOffset = Memory.ReadInt32(Mod0Offset + 0x10) + Mod0Offset;
long EhHdrEndOffset = Memory.ReadInt32(Mod0Offset + 0x14) + Mod0Offset;
long ModObjOffset = Memory.ReadInt32(Mod0Offset + 0x18) + Mod0Offset;
MapBss(BssStartOffset, BssEndOffset - BssStartOffset);
ImageEnd = BssEndOffset;
List <ElfDyn> Dynamic = new List <ElfDyn>();
while (true)
{
long TagVal = Memory.ReadInt64(DynamicOffset + 0);
long Value = Memory.ReadInt64(DynamicOffset + 8);
DynamicOffset += 0x10;
ElfDynTag Tag = (ElfDynTag)TagVal;
if (Tag == ElfDynTag.DT_NULL)
{
break;
}
Dynamic.Add(new ElfDyn(Tag, Value));
}
this.Dynamic = Dynamic.ToArray();
}
public static AOpCode DecodeOpCode(AMemory Memory, long Position)
{
int OpCode = Memory.ReadInt32(Position);
AInst Inst = AOpCodeTable.GetInst(OpCode);
AOpCode DecodedOpCode = new AOpCode(AInst.Undefined, Position, OpCode);
if (Inst.Type != null)
{
DecodedOpCode = CreateOpCode(Inst.Type, Inst, Position, OpCode);
}
return(DecodedOpCode);
}
private ElfSym GetSymbol(long Position, long StrTblAddr)
{
int NameIndex = Memory.ReadInt32(Position + 0);
int Info = Memory.ReadByte(Position + 4);
int Other = Memory.ReadByte(Position + 5);
int SHIdx = Memory.ReadInt16(Position + 6);
long Value = Memory.ReadInt64(Position + 8);
long Size = Memory.ReadInt64(Position + 16);
string Name = string.Empty;
for (int Chr; (Chr = Memory.ReadByte(StrTblAddr + NameIndex++)) != 0;)
{
Name += (char)Chr;
}
return(new ElfSym(Name, Info, Other, SHIdx, Value, Size));
}
private void UploadTexture(AMemory Memory, long BasePosition, int TexIndex, int HndIndex)
{
long Position = BasePosition + HndIndex * 4;
int TextureHandle = Memory.ReadInt32(Position);
int TicIndex = (TextureHandle >> 0) & 0xfffff;
int TscIndex = (TextureHandle >> 20) & 0xfff;
TryGetCpuAddr(NvGpuEngine3dReg.TexHeaderPoolOffset, out long TicPosition);
TryGetCpuAddr(NvGpuEngine3dReg.TexSamplerPoolOffset, out long TscPosition);
TicPosition += TicIndex * 0x20;
TscPosition += TscIndex * 0x20;
Gpu.Renderer.SetTexture(TexIndex, TextureFactory.MakeTexture(Gpu, Memory, TicPosition));
Gpu.Renderer.SetSampler(TexIndex, TextureFactory.MakeSampler(Gpu, Memory, TscPosition));
}
public long SignalAndIncrementIfEqual(AMemory Memory, long Address, int Value, int Count)
{
System.CriticalSectionLock.Lock();
Memory.SetExclusive(0, Address);
if (!UserToKernelInt32(Memory, Address, out int CurrentValue))
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm));
}
while (CurrentValue == Value)
{
if (Memory.TestExclusive(0, Address))
{
Memory.WriteInt32(Address, CurrentValue + 1);
Memory.ClearExclusiveForStore(0);
break;
}
Memory.SetExclusive(0, Address);
CurrentValue = Memory.ReadInt32(Address);
}
Memory.ClearExclusive(0);
if (CurrentValue != Value)
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidState));
}
WakeArbiterThreads(Address, Count);
System.CriticalSectionLock.Unlock();
return(0);
}
public static ulong WaitForAddressIfEqual(Process Process,
AThreadState ThreadState,
AMemory Memory,
long Address,
int Value,
ulong Timeout)
{
if (Memory.ReadInt32(Address) != Value)
{
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidState));
}
if (Timeout == 0)
{
return(MakeError(ErrorModule.Kernel, KernelErr.Timeout));
}
return(WaitForAddress(Process, ThreadState, Address, Timeout));
}
public void WaitForSignal(int ThreadHandle)
{
int Count = Memory.ReadInt32(CondVarAddress);
if (Count <= 0)
{
return;
}
Memory.WriteInt32(CondVarAddress, Count - 1);
ManualResetEvent Event = new ManualResetEvent(false);
WaitingThreads.Enqueue(new WaitingThread(ThreadHandle, Event));
if (Timeout != -1)
{
Event.WaitOne((int)(Timeout / 1000000));
}
else
{
Event.WaitOne();
}
}
public Executable(IExecutable Exe, AMemory Memory, long ImageBase)
{
Dynamic = new List <ElfDyn>();
m_SymbolTable = new Dictionary <long, string>();
Name = Exe.Name;
this.Memory = Memory;
this.ImageBase = ImageBase;
this.ImageEnd = ImageBase;
WriteData(ImageBase + Exe.TextOffset, Exe.Text, MemoryType.CodeStatic, AMemoryPerm.RX);
WriteData(ImageBase + Exe.ROOffset, Exe.RO, MemoryType.CodeMutable, AMemoryPerm.Read);
WriteData(ImageBase + Exe.DataOffset, Exe.Data, MemoryType.CodeMutable, AMemoryPerm.RW);
if (Exe.Mod0Offset == 0)
{
int BssOffset = Exe.DataOffset + Exe.Data.Length;
int BssSize = Exe.BssSize;
MapBss(ImageBase + BssOffset, BssSize);
ImageEnd = ImageBase + BssOffset + BssSize;
return;
}
long Mod0Offset = ImageBase + Exe.Mod0Offset;
int Mod0Magic = Memory.ReadInt32(Mod0Offset + 0x0);
long DynamicOffset = Memory.ReadInt32(Mod0Offset + 0x4) + Mod0Offset;
long BssStartOffset = Memory.ReadInt32(Mod0Offset + 0x8) + Mod0Offset;
long BssEndOffset = Memory.ReadInt32(Mod0Offset + 0xc) + Mod0Offset;
long EhHdrStartOffset = Memory.ReadInt32(Mod0Offset + 0x10) + Mod0Offset;
long EhHdrEndOffset = Memory.ReadInt32(Mod0Offset + 0x14) + Mod0Offset;
long ModObjOffset = Memory.ReadInt32(Mod0Offset + 0x18) + Mod0Offset;
MapBss(BssStartOffset, BssEndOffset - BssStartOffset);
ImageEnd = BssEndOffset;
while (true)
{
long TagVal = Memory.ReadInt64(DynamicOffset + 0);
long Value = Memory.ReadInt64(DynamicOffset + 8);
DynamicOffset += 0x10;
ElfDynTag Tag = (ElfDynTag)TagVal;
if (Tag == ElfDynTag.DT_NULL)
{
break;
}
Dynamic.Add(new ElfDyn(Tag, Value));
}
long StrTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_STRTAB);
long SymTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_SYMTAB);
long SymEntSize = GetFirstValue(ElfDynTag.DT_SYMENT);
while ((ulong)SymTblAddr < (ulong)StrTblAddr)
{
ElfSym Sym = GetSymbol(SymTblAddr, StrTblAddr);
m_SymbolTable.TryAdd(Sym.Value, Sym.Name);
SymTblAddr += SymEntSize;
}
}
public long WaitForAddressIfLessThan(
AMemory Memory,
long Address,
int Value,
bool ShouldDecrement,
long Timeout)
{
KThread CurrentThread = System.Scheduler.GetCurrentThread();
System.CriticalSectionLock.Lock();
if (CurrentThread.ShallBeTerminated ||
CurrentThread.SchedFlags == ThreadSchedState.TerminationPending)
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.ThreadTerminating));
}
CurrentThread.SignaledObj = null;
CurrentThread.ObjSyncResult = (int)MakeError(ErrorModule.Kernel, KernelErr.Timeout);
//If ShouldDecrement is true, do atomic decrement of the value at Address.
Memory.SetExclusive(0, Address);
if (!UserToKernelInt32(Memory, Address, out int CurrentValue))
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm));
}
if (ShouldDecrement)
{
while (CurrentValue < Value)
{
if (Memory.TestExclusive(0, Address))
{
Memory.WriteInt32(Address, CurrentValue - 1);
Memory.ClearExclusiveForStore(0);
break;
}
Memory.SetExclusive(0, Address);
CurrentValue = Memory.ReadInt32(Address);
}
}
Memory.ClearExclusive(0);
if (CurrentValue < Value)
{
if (Timeout == 0)
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.Timeout));
}
CurrentThread.MutexAddress = Address;
CurrentThread.WaitingInArbitration = true;
InsertSortedByPriority(ArbiterThreads, CurrentThread);
CurrentThread.Reschedule(ThreadSchedState.Paused);
if (Timeout > 0)
{
System.TimeManager.ScheduleFutureInvocation(CurrentThread, Timeout);
}
System.CriticalSectionLock.Unlock();
if (Timeout > 0)
{
System.TimeManager.UnscheduleFutureInvocation(CurrentThread);
}
System.CriticalSectionLock.Lock();
if (CurrentThread.WaitingInArbitration)
{
ArbiterThreads.Remove(CurrentThread);
CurrentThread.WaitingInArbitration = false;
}
System.CriticalSectionLock.Unlock();
return(CurrentThread.ObjSyncResult);
}
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidState));
}
public long SignalAndModifyIfEqual(AMemory Memory, long Address, int Value, int Count)
{
System.CriticalSectionLock.Lock();
int Offset;
//The value is decremented if the number of threads waiting is less
//or equal to the Count of threads to be signaled, or Count is zero
//or negative. It is incremented if there are no threads waiting.
int WaitingCount = 0;
foreach (KThread Thread in ArbiterThreads.Where(x => x.MutexAddress == Address))
{
if (++WaitingCount > Count)
{
break;
}
}
if (WaitingCount > 0)
{
Offset = WaitingCount <= Count || Count <= 0 ? -1 : 0;
}
else
{
Offset = 1;
}
Memory.SetExclusive(0, Address);
if (!UserToKernelInt32(Memory, Address, out int CurrentValue))
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm));
}
while (CurrentValue == Value)
{
if (Memory.TestExclusive(0, Address))
{
Memory.WriteInt32(Address, CurrentValue + Offset);
Memory.ClearExclusiveForStore(0);
break;
}
Memory.SetExclusive(0, Address);
CurrentValue = Memory.ReadInt32(Address);
}
Memory.ClearExclusive(0);
if (CurrentValue != Value)
{
System.CriticalSectionLock.Unlock();
return(MakeError(ErrorModule.Kernel, KernelErr.InvalidState));
}
WakeArbiterThreads(Address, Count);
System.CriticalSectionLock.Unlock();
return(0);
}
public Executable(IExecutable Exe, KMemoryManager MemoryManager, AMemory Memory, long ImageBase)
{
Dynamic = new List <ElfDyn>();
FilePath = Exe.FilePath;
if (FilePath != null)
{
Name = Path.GetFileNameWithoutExtension(FilePath.Replace(Homebrew.TemporaryNroSuffix, ""));
}
this.Memory = Memory;
this.MemoryManager = MemoryManager;
this.ImageBase = ImageBase;
this.ImageEnd = ImageBase;
long TextPosition = ImageBase + (uint)Exe.TextOffset;
long ROPosition = ImageBase + (uint)Exe.ROOffset;
long DataPosition = ImageBase + (uint)Exe.DataOffset;
long TextSize = (uint)IntUtils.AlignUp(Exe.Text.Length, KMemoryManager.PageSize);
long ROSize = (uint)IntUtils.AlignUp(Exe.RO.Length, KMemoryManager.PageSize);
long DataSize = (uint)IntUtils.AlignUp(Exe.Data.Length, KMemoryManager.PageSize);
long DataAndBssSize = (uint)IntUtils.AlignUp(Exe.BssSize, KMemoryManager.PageSize) + DataSize;
ImageEnd = DataPosition + DataAndBssSize;
MemoryManager.HleMapProcessCode(TextPosition, TextSize + ROSize + DataAndBssSize);
MemoryManager.SetProcessMemoryPermission(ROPosition, ROSize, MemoryPermission.Read);
MemoryManager.SetProcessMemoryPermission(DataPosition, DataAndBssSize, MemoryPermission.ReadAndWrite);
Memory.WriteBytes(TextPosition, Exe.Text);
Memory.WriteBytes(ROPosition, Exe.RO);
Memory.WriteBytes(DataPosition, Exe.Data);
if (Exe.Mod0Offset == 0)
{
return;
}
long Mod0Offset = ImageBase + Exe.Mod0Offset;
int Mod0Magic = Memory.ReadInt32(Mod0Offset + 0x0);
long DynamicOffset = Memory.ReadInt32(Mod0Offset + 0x4) + Mod0Offset;
long BssStartOffset = Memory.ReadInt32(Mod0Offset + 0x8) + Mod0Offset;
long BssEndOffset = Memory.ReadInt32(Mod0Offset + 0xc) + Mod0Offset;
long EhHdrStartOffset = Memory.ReadInt32(Mod0Offset + 0x10) + Mod0Offset;
long EhHdrEndOffset = Memory.ReadInt32(Mod0Offset + 0x14) + Mod0Offset;
long ModObjOffset = Memory.ReadInt32(Mod0Offset + 0x18) + Mod0Offset;
while (true)
{
long TagVal = Memory.ReadInt64(DynamicOffset + 0);
long Value = Memory.ReadInt64(DynamicOffset + 8);
DynamicOffset += 0x10;
ElfDynTag Tag = (ElfDynTag)TagVal;
if (Tag == ElfDynTag.DT_NULL)
{
break;
}
Dynamic.Add(new ElfDyn(Tag, Value));
}
long StrTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_STRTAB);
long SymTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_SYMTAB);
long SymEntSize = GetFirstValue(ElfDynTag.DT_SYMENT);
List <ElfSym> Symbols = new List <ElfSym>();
while ((ulong)SymTblAddr < (ulong)StrTblAddr)
{
ElfSym Sym = GetSymbol(SymTblAddr, StrTblAddr);
Symbols.Add(Sym);
SymTblAddr += SymEntSize;
}
SymbolTable = Array.AsReadOnly(Symbols.OrderBy(x => x.Value).ToArray());
}
private KThread TryAcquireMutex(Process Process, AMemory Memory, KThread Requester)
{
int Core = Requester.CurrentCore;
long Address = Requester.MutexAddress;
Memory.SetExclusive(Core, Address);
int MutexValue = Memory.ReadInt32(Address);
while (MutexValue != 0)
{
if (Memory.TestExclusive(Core, Address))
{
if (MutexValue != 0)
{
//Update value to indicate there is a mutex waiter now.
Memory.WriteInt32(Address, MutexValue | HasListenersMask);
}
else
{
//No thread owning the mutex, assign to requesting thread.
Memory.WriteInt32(Address, Requester.ThreadHandleForUserMutex);
}
Memory.ClearExclusiveForStore(Core);
break;
}
Memory.SetExclusive(Core, Address);
MutexValue = Memory.ReadInt32(Address);
}
if (MutexValue == 0)
{
//We now own the mutex.
Requester.SignaledObj = null;
Requester.ObjSyncResult = 0;
Requester.ReleaseAndResume();
return(null);
}
MutexValue &= ~HasListenersMask;
KThread MutexOwner = Process.HandleTable.GetData <KThread>(MutexValue);
if (MutexOwner != null)
{
//Mutex already belongs to another thread, wait for it.
MutexOwner.AddMutexWaiter(Requester);
}
else
{
//Invalid mutex owner.
Requester.SignaledObj = null;
Requester.ObjSyncResult = (int)MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
Requester.ReleaseAndResume();
}
return(MutexOwner);
}