Code style fixes and nits on the HLE project (#355)

* Some style fixes and nits on ITimeZoneService

* Remove some unneeded usings

* Remove the Ryujinx.HLE.OsHle.Handles namespace

* Remove hbmenu automatic load on process exit

* Rename Ns to Device, rename Os to System, rename SystemState to State

* Move Exceptions and Utilities out of OsHle

* Rename OsHle to HOS

* Rename OsHle folder to HOS

* IManagerDisplayService and ISystemDisplayService style fixes

* BsdError shouldn't be public

* Add a empty new line before using static

* Remove unused file

* Some style fixes on NPDM

* Exit gracefully when the application is closed

* Code style fixes on IGeneralService

* Add 0x prefix on values printed as hex

* Small improvements on finalization code

* Move ProcessId and ThreadId out of AThreadState

* Rename VFs to FileSystem

* FsAccessHeader shouldn't be public. Also fix file names casing

* More case changes on NPDM

* Remove unused files

* Move using to the correct place on NPDM

* Use properties on KernelAccessControlMmio

* Address PR feedback

4 files changed, 137 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Lm/ILogService.cs b/Ryujinx.HLE/HOS/Services/Lm/ILogService.cs
new file mode 100644
index 00000000..d79da515
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Lm/ILogService.cs
@@ -0,0 +1,27 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Lm
+{
+    class ILogService : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public ILogService()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 0, Initialize }
+            };
+        }
+
+        public long Initialize(ServiceCtx Context)
+        {
+            MakeObject(Context, new ILogger());
+
+            return 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Lm/ILogger.cs b/Ryujinx.HLE/HOS/Services/Lm/ILogger.cs
new file mode 100644
index 00000000..42d57c6f
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Lm/ILogger.cs
@@ -0,0 +1,86 @@
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.Logging;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace Ryujinx.HLE.HOS.Services.Lm
+{
+    class ILogger : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public ILogger()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 0, Log }
+            };
+        }
+
+        public long Log(ServiceCtx Context)
+        {
+            byte[] LogBuffer = Context.Memory.ReadBytes(
+                Context.Request.PtrBuff[0].Position,
+                Context.Request.PtrBuff[0].Size);
+
+            using (MemoryStream MS = new MemoryStream(LogBuffer))
+            {
+                BinaryReader Reader = new BinaryReader(MS);
+
+                long  Pid           = Reader.ReadInt64();
+                long  ThreadContext = Reader.ReadInt64();
+                short Flags         = Reader.ReadInt16();
+                byte  Level         = Reader.ReadByte();
+                byte  Verbosity     = Reader.ReadByte();
+                int   PayloadLength = Reader.ReadInt32();
+
+                StringBuilder SB = new StringBuilder();
+
+                SB.AppendLine("Guest log:");
+
+                while (MS.Position < MS.Length)
+                {
+                    byte Type = Reader.ReadByte();
+                    byte Size = Reader.ReadByte();
+
+                    LmLogField Field = (LmLogField)Type;
+
+                    string FieldStr = string.Empty;
+
+                    if (Field == LmLogField.Skip)
+                    {
+                        Reader.ReadByte();
+
+                        continue;
+                    }
+                    else if (Field == LmLogField.Line)
+                    {
+                        FieldStr = Field + ": " + Reader.ReadInt32();
+                    }
+                    else
+                    {
+                        FieldStr = Field + ": \"" + Encoding.UTF8.GetString(Reader.ReadBytes(Size)) + "\"";
+                    }
+
+                    SB.AppendLine(" " + FieldStr);
+                }
+
+                string Text = SB.ToString();
+
+                switch((LmLogLevel)Level)
+                {
+                    case LmLogLevel.Trace:    Context.Device.Log.PrintDebug  (LogClass.ServiceLm, Text); break;
+                    case LmLogLevel.Info:     Context.Device.Log.PrintInfo   (LogClass.ServiceLm, Text); break;
+                    case LmLogLevel.Warning:  Context.Device.Log.PrintWarning(LogClass.ServiceLm, Text); break;
+                    case LmLogLevel.Error:    Context.Device.Log.PrintError  (LogClass.ServiceLm, Text); break;
+                    case LmLogLevel.Critical: Context.Device.Log.PrintError  (LogClass.ServiceLm, Text); break;
+                }
+            }
+
+            return 0;
+        }
+    }
+}
diff --git a/Ryujinx.HLE/HOS/Services/Lm/LmLogField.cs b/Ryujinx.HLE/HOS/Services/Lm/LmLogField.cs
new file mode 100644
index 00000000..bd8c8e88
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Lm/LmLogField.cs
@@ -0,0 +1,13 @@
+namespace Ryujinx.HLE.HOS.Services.Lm
+{
+    enum LmLogField
+    {
+        Skip     = 1,
+        Message  = 2,
+        Line     = 3,
+        Filename = 4,
+        Function = 5,
+        Module   = 6,
+        Thread   = 7
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Lm/LmLogLevel.cs b/Ryujinx.HLE/HOS/Services/Lm/LmLogLevel.cs
new file mode 100644
index 00000000..70554c42
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Lm/LmLogLevel.cs
@@ -0,0 +1,11 @@
+namespace Ryujinx.HLE.HOS.Services.Lm
+{
+    enum LmLogLevel
+    {
+        Trace,
+        Info,
+        Warning,
+        Error,
+        Critical
+    }
+}
\ No newline at end of file