time: Update for 15.0.0 changes and fixes long standing issues (#4822)

* time: Update for 15.0.0 changes

Last time we did an upgrade on the time service was during 9.x era, it was about time to take back that reverse again!

15.0.0 added a new structure on the shared memory to get steady clock raw timepoints with a granularity in nanoseconds.

This commit implements this new part.

I plan to write a follow up with a bit of refactoring of this ancient part of the emulator.

As always, reverse and work done by your truly.

PS: As a reminder, if this change is reused anywhere else, work should be credited as Ryujinx and not my person.

* time: Do not set setup value to posix time

This should fix local and network clock returning 0 under usage with
shared memory.

This probably fix #2430.

* Address gdkchan's comment

* Fix internal offset not working since changes and ensure that user clock have a valid clock id

* time: Report auto correcting clock and hardcode steady clock unique id

Fix Pokemon Sword Pokejobs for real.

* Address gdkchan's comment

src/Ryujinx.HLE/HOS/Horizon.cs

@@ -200,9 +200,10 @@ namespace Ryujinx.HLE.HOS
 
             LibHacHorizonManager = device.Configuration.LibHacHorizonManager;
 
+            // We hardcode a clock source id to avoid it changing between each start.
             // TODO: use set:sys (and get external clock source id from settings)
             // TODO: use "time!standard_steady_clock_rtc_update_interval_minutes" and implement a worker thread to be accurate.
-            UInt128 clockSourceId = UInt128Utils.CreateRandom();
+            UInt128 clockSourceId = new UInt128(0x36a0328702ce8bc1, 0x1608eaba02333284);
             IRtcManager.GetExternalRtcValue(out ulong rtcValue);
 
             // We assume the rtc is system time.
@@ -222,22 +223,22 @@ namespace Ryujinx.HLE.HOS
                 internalOffset = internalOffset.AddSeconds(-3600L);
             }
 
-            internalOffset = new TimeSpanType(-internalOffset.NanoSeconds);
+            systemTime = new TimeSpanType(systemTime.NanoSeconds + internalOffset.NanoSeconds);
 
             // First init the standard steady clock
-            TimeServiceManager.Instance.SetupStandardSteadyClock(TickSource, clockSourceId, systemTime, internalOffset, TimeSpanType.Zero, false);
+            TimeServiceManager.Instance.SetupStandardSteadyClock(TickSource, clockSourceId, TimeSpanType.Zero, TimeSpanType.Zero, TimeSpanType.Zero, false);
             TimeServiceManager.Instance.SetupStandardLocalSystemClock(TickSource, new SystemClockContext(), systemTime.ToSeconds());
+            TimeServiceManager.Instance.StandardLocalSystemClock.GetClockContext(TickSource, out SystemClockContext localSytemClockContext);
 
             if (NxSettings.Settings.TryGetValue("time!standard_network_clock_sufficient_accuracy_minutes", out object standardNetworkClockSufficientAccuracyMinutes))
             {
                 TimeSpanType standardNetworkClockSufficientAccuracy = new TimeSpanType((int)standardNetworkClockSufficientAccuracyMinutes * 60000000000);
 
                 // The network system clock needs a valid system clock, as such we setup this system clock using the local system clock.
-                TimeServiceManager.Instance.StandardLocalSystemClock.GetClockContext(TickSource, out SystemClockContext localSytemClockContext);
                 TimeServiceManager.Instance.SetupStandardNetworkSystemClock(localSytemClockContext, standardNetworkClockSufficientAccuracy);
             }
 
-            TimeServiceManager.Instance.SetupStandardUserSystemClock(TickSource, false, SteadyClockTimePoint.GetRandom());
+            TimeServiceManager.Instance.SetupStandardUserSystemClock(TickSource, true, localSytemClockContext.SteadyTimePoint);
 
             // FIXME: TimeZone should be init here but it's actually done in ContentManager
 

src/Ryujinx.HLE/HOS/Services/Time/Clock/Types/ContinuousAdjustmentTimePoint.cs

@@ -0,0 +1,13 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Time.Clock.Types
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    struct ContinuousAdjustmentTimePoint
+    {
+        public ulong ClockOffset;
+        public long Multiplier;
+        public long DivisorLog2;
+        public SystemClockContext Context;
+    }
+}

src/Ryujinx.HLE/HOS/Services/Time/TimeSharedMemory.cs

@@ -1,8 +1,8 @@
 using Ryujinx.Cpu;
 using Ryujinx.HLE.HOS.Kernel.Memory;
 using Ryujinx.HLE.HOS.Services.Time.Clock;
+using Ryujinx.HLE.HOS.Services.Time.Clock.Types;
 using Ryujinx.HLE.HOS.Services.Time.Types;
-using Ryujinx.HLE.Utilities;
 using System;
 using System.Runtime.CompilerServices;
 using System.Threading;
@@ -20,6 +20,7 @@ namespace Ryujinx.HLE.HOS.Services.Time
         private const uint LocalSystemClockContextOffset = 0x38;
         private const uint NetworkSystemClockContextOffset = 0x80;
         private const uint AutomaticCorrectionEnabledOffset = 0xC8;
+        private const uint ContinuousAdjustmentTimePointOffset = 0xD0;
 
         public void Initialize(Switch device, KSharedMemory sharedMemory, SharedMemoryStorage timeSharedMemoryStorage, int timeSharedMemorySize)
         {
@@ -39,15 +40,7 @@ namespace Ryujinx.HLE.HOS.Services.Time
 
         public void SetupStandardSteadyClock(ITickSource tickSource, UInt128 clockSourceId, TimeSpanType currentTimePoint)
         {
-            TimeSpanType ticksTimeSpan = TimeSpanType.FromTicks(tickSource.Counter, tickSource.Frequency);
+            UpdateSteadyClock(tickSource, clockSourceId, currentTimePoint);
-
-            SteadyClockContext context = new SteadyClockContext
-            {
-                InternalOffset = (ulong)(currentTimePoint.NanoSeconds - ticksTimeSpan.NanoSeconds),
-                ClockSourceId  = clockSourceId
-            };
-
-            WriteObjectToSharedMemory(SteadyClockContextOffset, 4, context);
         }
 
         public void SetAutomaticCorrectionEnabled(bool isAutomaticCorrectionEnabled)
@@ -59,9 +52,37 @@ namespace Ryujinx.HLE.HOS.Services.Time
         public void SetSteadyClockRawTimePoint(ITickSource tickSource, TimeSpanType currentTimePoint)
         {
             SteadyClockContext context = ReadObjectFromSharedMemory<SteadyClockContext>(SteadyClockContextOffset, 4);
+
+            UpdateSteadyClock(tickSource, context.ClockSourceId, currentTimePoint);
+        }
+
+        private void UpdateSteadyClock(ITickSource tickSource, UInt128 clockSourceId, TimeSpanType currentTimePoint)
+        {
             TimeSpanType ticksTimeSpan = TimeSpanType.FromTicks(tickSource.Counter, tickSource.Frequency);
 
-            context.InternalOffset = (ulong)(currentTimePoint.NanoSeconds - ticksTimeSpan.NanoSeconds);
+            ContinuousAdjustmentTimePoint adjustmentTimePoint = new ContinuousAdjustmentTimePoint
+            {
+                ClockOffset = (ulong)ticksTimeSpan.NanoSeconds,
+                Multiplier = 1,
+                DivisorLog2 = 0,
+                Context = new SystemClockContext
+                {
+                    Offset = 0,
+                    SteadyTimePoint = new SteadyClockTimePoint
+                    {
+                        ClockSourceId = clockSourceId,
+                        TimePoint = 0
+                    }
+                }
+            };
+
+            WriteObjectToSharedMemory(ContinuousAdjustmentTimePointOffset, 4, adjustmentTimePoint);
+
+            SteadyClockContext context = new SteadyClockContext
+            {
+                InternalOffset = (ulong)(currentTimePoint.NanoSeconds - ticksTimeSpan.NanoSeconds),
+                ClockSourceId = clockSourceId
+            };
 
             WriteObjectToSharedMemory(SteadyClockContextOffset, 4, context);
         }