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Accurately implement time shared memory operations

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Thog 2019-10-01 00:44:54 +02:00
parent 0fa8f92cde
commit 45125f0e3a
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GPG key ID: 0CD291558FAFDBC6
4 changed files with 95 additions and 9 deletions
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5
Ryujinx.HLE/DeviceMemory.cs
View file

@ -59,6 +59,11 @@ namespace Ryujinx.HLE
return *((ulong*)(_ramPtr + position));
}
public unsafe T ReadStruct<T>(long position)
{
return Marshal.PtrToStructure<T>((IntPtr)(_ramPtr + position));
}
public void WriteSByte(long position, sbyte value)
{
WriteByte(position, (byte)value);

4
Ryujinx.HLE/HOS/Services/Time/TimeManager.cs
View file

@ -73,7 +73,7 @@ namespace Ryujinx.HLE.HOS.Services.Time
TimeSpanType currentTimePoint = StandardSteadyClock.GetCurrentRawTimePoint(thread);
SharedMemory.SetupStandardSteadyClock(clockSourceId, currentTimePoint);
SharedMemory.SetupStandardSteadyClock(thread, clockSourceId, currentTimePoint);
// TODO: propagate IPC late binding of "time:s" and "time:p"
return ResultCode.Success;
@ -174,7 +174,7 @@ namespace Ryujinx.HLE.HOS.Services.Time
TimeSpanType currentTimePoint = StandardSteadyClock.GetCurrentRawTimePoint(thread);
SharedMemory.SetSteadyClockRawTimePoint(currentTimePoint);
SharedMemory.SetSteadyClockRawTimePoint(thread, currentTimePoint);
}
}
}

83
Ryujinx.HLE/HOS/Services/Time/TimeSharedMemory.cs
View file

@ -1,6 +1,10 @@
using System;
using System.Runtime.InteropServices;
using System.Threading;
using Ryujinx.HLE.HOS.Kernel.Memory;
using Ryujinx.HLE.HOS.Kernel.Threading;
using Ryujinx.HLE.HOS.Services.Time.Clock;
using Ryujinx.HLE.HOS.Services.Time.Types;
using Ryujinx.HLE.Utilities;
namespace Ryujinx.HLE.HOS.Services.Time
@ -12,6 +16,11 @@ namespace Ryujinx.HLE.HOS.Services.Time
private long _timeSharedMemoryAddress;
private int _timeSharedMemorySize;
private const uint SteadyClockContextOffset = 0x00;
private const uint LocalSystemClockContextOffset = 0x38;
private const uint NetworkSystemClockContextOffset = 0x80;
private const uint AutomaticCorrectionEnabledOffset = 0xC8;
public void Initialize(Switch device, KSharedMemory sharedMemory, long timeSharedMemoryAddress, int timeSharedMemorySize)
{
_device = device;
@ -28,29 +37,89 @@ namespace Ryujinx.HLE.HOS.Services.Time
return _sharedMemory;
}
public void SetupStandardSteadyClock(UInt128 clockSourceId, TimeSpanType currentTimePoint)
public void SetupStandardSteadyClock(KThread thread, UInt128 clockSourceId, TimeSpanType currentTimePoint)
{
// TODO
TimeSpanType ticksTimeSpan;
// As this may be called before the guest code, we support passing a null thread to make this api usable.
if (thread == null)
{
ticksTimeSpan = TimeSpanType.FromSeconds(0);
}
else
{
ticksTimeSpan = TimeSpanType.FromTicks(thread.Context.CntpctEl0, thread.Context.CntfrqEl0);
}
SteadyClockContext context = new SteadyClockContext
{
InternalOffset = (ulong)(currentTimePoint.NanoSeconds - ticksTimeSpan.NanoSeconds),
ClockSourceId = clockSourceId
};
WriteObjectToSharedMemory(SteadyClockContextOffset, 4, context);
}
public void SetAutomaticCorrectionEnabled(bool isAutomaticCorrectionEnabled)
{
// TODO
// We convert the bool to byte here as a bool in C# takes 4 bytes...
WriteObjectToSharedMemory(AutomaticCorrectionEnabledOffset, 0, Convert.ToByte(isAutomaticCorrectionEnabled));
}
public void SetSteadyClockRawTimePoint(TimeSpanType currentTimePoint)
public void SetSteadyClockRawTimePoint(KThread thread, TimeSpanType currentTimePoint)
{
// TODO
SteadyClockContext context = ReadObjectFromSharedMemory<SteadyClockContext>(SteadyClockContextOffset, 4);
TimeSpanType ticksTimeSpan = TimeSpanType.FromTicks(thread.Context.CntpctEl0, thread.Context.CntfrqEl0);
context.InternalOffset = (ulong)(currentTimePoint.NanoSeconds - ticksTimeSpan.NanoSeconds);
WriteObjectToSharedMemory(SteadyClockContextOffset, 4, context);
}
public void UpdateLocalSystemClockContext(SystemClockContext context)
{
// TODO
WriteObjectToSharedMemory(LocalSystemClockContextOffset, 4, context);
}
public void UpdateNetworkSystemClockContext(SystemClockContext context)
{
// TODO
WriteObjectToSharedMemory(NetworkSystemClockContextOffset, 4, context);
}
private T ReadObjectFromSharedMemory<T>(long offset, long padding)
{
long indexOffset = _timeSharedMemoryAddress + offset;
T result;
uint index;
uint possiblyNewIndex;
do
{
index = _device.Memory.ReadUInt32(indexOffset);
long objectOffset = indexOffset + 4 + padding + (index & 1) * Marshal.SizeOf<T>();
result = _device.Memory.ReadStruct<T>(objectOffset);
Thread.MemoryBarrier();
possiblyNewIndex = _device.Memory.ReadUInt32(indexOffset);
} while (index != possiblyNewIndex);
return result;
}
private void WriteObjectToSharedMemory<T>(long offset, long padding, T value)
{
long indexOffset = _timeSharedMemoryAddress + offset;
uint newIndex = _device.Memory.ReadUInt32(indexOffset) + 1;
long objectOffset = indexOffset + 4 + padding + (newIndex & 1) * Marshal.SizeOf<T>();
_device.Memory.WriteStruct(objectOffset, value);
Thread.MemoryBarrier();
_device.Memory.WriteUInt32(indexOffset, newIndex);
}
}
}

12
Ryujinx.HLE/HOS/Services/Time/Types/SteadyClockContext.cs Normal file
View file

@ -0,0 +1,12 @@
using Ryujinx.HLE.Utilities;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE.HOS.Services.Time.Types
{
[StructLayout(LayoutKind.Sequential)]
struct SteadyClockContext
{
public ulong InternalOffset;
public UInt128 ClockSourceId;
}
}