From 2ed24af756f60391dade07ac371a2cf630628eb3 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 13 Mar 2018 21:24:17 -0300
Subject: [PATCH] Add pl:u stub, use higher precision on CNTPCT_EL0 register
 tick count

---
 ChocolArm64/Instruction/AInstEmitSystem.cs    |  1 +
 ChocolArm64/State/AThreadState.cs             | 26 ++++++++++++++++---
 Ryujinx.Core/OsHle/Process.cs                 |  3 +++
 Ryujinx.Core/OsHle/Services/Pl/ServicePl.cs   |  8 ++++++
 .../OsHle/Services/Pl/SharedFontType.cs       | 12 +++++++++
 5 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 Ryujinx.Core/OsHle/Services/Pl/SharedFontType.cs

diff --git a/ChocolArm64/Instruction/AInstEmitSystem.cs b/ChocolArm64/Instruction/AInstEmitSystem.cs
index 42a62009b..1c5d02634 100644
--- a/ChocolArm64/Instruction/AInstEmitSystem.cs
+++ b/ChocolArm64/Instruction/AInstEmitSystem.cs
@@ -30,6 +30,7 @@ namespace ChocolArm64.Instruction
                 case 0b11_011_0100_0100_001: PropName = nameof(AThreadState.Fpsr);      break;
                 case 0b11_011_1101_0000_010: PropName = nameof(AThreadState.TpidrEl0);  break;
                 case 0b11_011_1101_0000_011: PropName = nameof(AThreadState.Tpidr);     break;
+                case 0b11_011_1110_0000_000: PropName = nameof(AThreadState.CntfrqEl0); break;
                 case 0b11_011_1110_0000_001: PropName = nameof(AThreadState.CntpctEl0); break;
 
                 default: throw new NotImplementedException($"Unknown MRS at {Op.Position:x16}");
diff --git a/ChocolArm64/State/AThreadState.cs b/ChocolArm64/State/AThreadState.cs
index ec8621b89..6f3f62f69 100644
--- a/ChocolArm64/State/AThreadState.cs
+++ b/ChocolArm64/State/AThreadState.cs
@@ -1,5 +1,6 @@
 using ChocolArm64.Events;
 using System;
+using System.Diagnostics;
 
 namespace ChocolArm64.State
 {
@@ -40,15 +41,34 @@ namespace ChocolArm64.State
         public uint CtrEl0   => 0x8444c004;
         public uint DczidEl0 => 0x00000004;
 
-        private const ulong TicksPerS  = 19_200_000;
-        private const ulong TicksPerMS = TicksPerS / 1_000;
+        public ulong CntfrqEl0 { get; set; }
+        public ulong CntpctEl0
+        {
+            get
+            {
+                double Ticks = TickCounter.ElapsedTicks * HostTickFreq;
 
-        public ulong CntpctEl0 => (ulong)Environment.TickCount * TicksPerMS;
+                return (ulong)(Ticks * CntfrqEl0);
+            }
+        }
 
         public event EventHandler<AInstExceptionEventArgs> Break;
         public event EventHandler<AInstExceptionEventArgs> SvcCall;
         public event EventHandler<AInstUndefinedEventArgs> Undefined;
 
+        private static Stopwatch TickCounter;
+
+        private static double HostTickFreq;
+
+        static AThreadState()
+        {
+            HostTickFreq = 1.0 / Stopwatch.Frequency;
+
+            TickCounter = new Stopwatch();
+
+            TickCounter.Start();
+        }
+
         internal void OnBreak(int Imm)
         {
             Break?.Invoke(this, new AInstExceptionEventArgs(Imm));
diff --git a/Ryujinx.Core/OsHle/Process.cs b/Ryujinx.Core/OsHle/Process.cs
index a8719e1c2..239b19803 100644
--- a/Ryujinx.Core/OsHle/Process.cs
+++ b/Ryujinx.Core/OsHle/Process.cs
@@ -17,6 +17,8 @@ namespace Ryujinx.Core.OsHle
         private const int TlsSize       = 0x200;
         private const int TotalTlsSlots = 32;
 
+        private const int TickFreq = 19_200_000;
+
         private Switch Ns;
 
         public bool NeedsHbAbi { get; private set; }
@@ -197,6 +199,7 @@ namespace Ryujinx.Core.OsHle
             Thread.ThreadState.Undefined += UndefinedHandler;
             Thread.ThreadState.ProcessId  = ProcessId;
             Thread.ThreadState.ThreadId   = ThreadId;
+            Thread.ThreadState.CntfrqEl0  = TickFreq;
             Thread.ThreadState.Tpidr      = Tpidr;
             Thread.ThreadState.X0         = (ulong)ArgsPtr;
             Thread.ThreadState.X1         = (ulong)Handle;
diff --git a/Ryujinx.Core/OsHle/Services/Pl/ServicePl.cs b/Ryujinx.Core/OsHle/Services/Pl/ServicePl.cs
index bb795f3f4..9a6177993 100644
--- a/Ryujinx.Core/OsHle/Services/Pl/ServicePl.cs
+++ b/Ryujinx.Core/OsHle/Services/Pl/ServicePl.cs
@@ -13,6 +13,7 @@ namespace Ryujinx.Core.OsHle.IpcServices.Pl
         {
             m_Commands = new Dictionary<int, ServiceProcessRequest>()
             {
+                { 0, RequestLoad                  },
                 { 1, GetLoadState                 },
                 { 2, GetFontSize                  },
                 { 3, GetSharedMemoryAddressOffset },
@@ -20,6 +21,13 @@ namespace Ryujinx.Core.OsHle.IpcServices.Pl
             };
         }
 
+        public long RequestLoad(ServiceCtx Context)
+        {
+            SharedFontType FontType = (SharedFontType)Context.RequestData.ReadInt32();
+
+            return 0;
+        }
+
         public long GetLoadState(ServiceCtx Context)
         {
             Context.ResponseData.Write(1); //Loaded
diff --git a/Ryujinx.Core/OsHle/Services/Pl/SharedFontType.cs b/Ryujinx.Core/OsHle/Services/Pl/SharedFontType.cs
new file mode 100644
index 000000000..29fe02b8a
--- /dev/null
+++ b/Ryujinx.Core/OsHle/Services/Pl/SharedFontType.cs
@@ -0,0 +1,12 @@
+namespace Ryujinx.Core.OsHle.IpcServices.Pl
+{
+    enum SharedFontType
+    {
+        JapanUsEurope       = 0,
+        SimplifiedChinese   = 1,
+        SimplifiedChineseEx = 2,
+        TraditionalChinese  = 3,
+        Korean              = 4,
+        NintendoEx          = 5
+    }
+}
\ No newline at end of file