Refactor SVC handler (#540)

* Refactor SVC handler

* Get rid of KernelErr

* Split kernel code files into multiple folders

Ryujinx.HLE/HOS/Kernel/Process/KTlsPageInfo.cs

@@ -0,0 +1,75 @@
+using Ryujinx.HLE.HOS.Kernel.Memory;
+
+namespace Ryujinx.HLE.HOS.Kernel.Process
+{
+    class KTlsPageInfo
+    {
+        public const int TlsEntrySize = 0x200;
+
+        public ulong PageAddr { get; private set; }
+
+        private bool[] _isSlotFree;
+
+        public KTlsPageInfo(ulong pageAddress)
+        {
+            PageAddr = pageAddress;
+
+            _isSlotFree = new bool[KMemoryManager.PageSize / TlsEntrySize];
+
+            for (int index = 0; index < _isSlotFree.Length; index++)
+            {
+                _isSlotFree[index] = true;
+            }
+        }
+
+        public bool TryGetFreePage(out ulong address)
+        {
+            address = PageAddr;
+
+            for (int index = 0; index < _isSlotFree.Length; index++)
+            {
+                if (_isSlotFree[index])
+                {
+                    _isSlotFree[index] = false;
+
+                    return true;
+                }
+
+                address += TlsEntrySize;
+            }
+
+            address = 0;
+
+            return false;
+        }
+
+        public bool IsFull()
+        {
+            bool hasFree = false;
+
+            for (int index = 0; index < _isSlotFree.Length; index++)
+            {
+                hasFree |= _isSlotFree[index];
+            }
+
+            return !hasFree;
+        }
+
+        public bool IsEmpty()
+        {
+            bool allFree = true;
+
+            for (int index = 0; index < _isSlotFree.Length; index++)
+            {
+                allFree &= _isSlotFree[index];
+            }
+
+            return allFree;
+        }
+
+        public void FreeTlsSlot(ulong address)
+        {
+            _isSlotFree[(address - PageAddr) / TlsEntrySize] = true;
+        }
+    }
+}