Accurately implement steady & system clocks (#732)

* Improve SteadyClock implementation accuracy

* Rewrite system clocks to be accurate

* Implement IStaticService 100 & 101

* Add time:* permissions

* Address comments

* Realign TimePermissions definitions

* Address gdk's comments

* Fix after rebase

1 files changed, 59 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Time/Clock/StandardLocalSystemClockCore.cs b/Ryujinx.HLE/HOS/Services/Time/Clock/StandardLocalSystemClockCore.cs
new file mode 100644
index 00000000..16550199
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Time/Clock/StandardLocalSystemClockCore.cs
@@ -0,0 +1,59 @@
+using Ryujinx.HLE.HOS.Kernel.Threading;
+
+namespace Ryujinx.HLE.HOS.Services.Time.Clock
+{
+    class StandardLocalSystemClockCore : SystemClockCore
+    {
+        private SteadyClockCore    _steadyClockCore;
+        private SystemClockContext _context;
+
+        private static StandardLocalSystemClockCore instance;
+
+        public static StandardLocalSystemClockCore Instance
+        {
+            get
+            {
+                if (instance == null)
+                {
+                    instance = new StandardLocalSystemClockCore(SteadyClockCore.Instance);
+                }
+
+                return instance;
+            }
+        }
+
+        public StandardLocalSystemClockCore(SteadyClockCore steadyClockCore)
+        {
+            _steadyClockCore = steadyClockCore;
+            _context         = new SystemClockContext();
+
+            _context.SteadyTimePoint.ClockSourceId = steadyClockCore.GetClockSourceId();
+        }
+
+        public override ResultCode Flush(SystemClockContext context)
+        {
+            // TODO: set:sys SetUserSystemClockContext
+
+            return ResultCode.Success;
+        }
+
+        public override SteadyClockCore GetSteadyClockCore()
+        {
+            return _steadyClockCore;
+        }
+
+        public override ResultCode GetSystemClockContext(KThread thread, out SystemClockContext context)
+        {
+            context = _context;
+
+            return ResultCode.Success;
+        }
+
+        public override ResultCode SetSystemClockContext(SystemClockContext context)
+        {
+            _context = context;
+
+            return ResultCode.Success;
+        }
+    }
+}