Move solution and projects to src

1 files changed, 65 insertions, 0 deletions

diff --git a/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/SaveOrRestoreRegister.cs b/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/SaveOrRestoreRegister.cs
new file mode 100644
index 00000000..d2e13311
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/SaveOrRestoreRegister.cs
@@ -0,0 +1,65 @@
+using Ryujinx.HLE.Exceptions;
+using Ryujinx.HLE.HOS.Tamper.Operations;
+
+namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
+{
+    /// <summary>
+    /// Code type 0xC1 performs saving or restoring of registers.
+    /// NOTE: Registers are saved and restored to a different set of registers than the ones used
+    /// for the other opcodes (Save Registers).
+    /// </summary>
+    class SaveOrRestoreRegister
+    {
+        private const int DestinationRegisterIndex = 3;
+        private const int SourceRegisterIndex = 5;
+        private const int OperationTypeIndex = 6;
+
+        private const int RestoreRegister = 0;
+        private const int SaveRegister = 1;
+        private const int ClearSavedValue = 2;
+        private const int ClearRegister = 3;
+
+        public static void Emit(byte[] instruction, CompilationContext context)
+        {
+            // C10D0Sx0
+            // D: Destination index.
+            // S: Source index.
+            // x: Operand Type, see below.
+
+            byte destinationRegIndex = instruction[DestinationRegisterIndex];
+            byte sourceRegIndex = instruction[SourceRegisterIndex];
+            byte operationType = instruction[OperationTypeIndex];
+            Impl(operationType, destinationRegIndex, sourceRegIndex, context);
+        }
+
+        public static void Impl(byte operationType, byte destinationRegIndex, byte sourceRegIndex, CompilationContext context)
+        {
+            IOperand destinationOperand;
+            IOperand sourceOperand;
+
+            switch (operationType)
+            {
+                case RestoreRegister:
+                    destinationOperand = context.GetRegister(destinationRegIndex);
+                    sourceOperand = context.GetSavedRegister(sourceRegIndex);
+                    break;
+                case SaveRegister:
+                    destinationOperand = context.GetSavedRegister(destinationRegIndex);
+                    sourceOperand = context.GetRegister(sourceRegIndex);
+                    break;
+                case ClearSavedValue:
+                    destinationOperand = new Value<ulong>(0);
+                    sourceOperand = context.GetSavedRegister(sourceRegIndex);
+                    break;
+                case ClearRegister:
+                    destinationOperand = new Value<ulong>(0);
+                    sourceOperand = context.GetRegister(sourceRegIndex);
+                    break;
+                default:
+                    throw new TamperCompilationException($"Invalid register operation type {operationType} in Atmosphere cheat");
+            }
+
+            context.CurrentOperations.Add(new OpMov<ulong>(destinationOperand, sourceOperand));
+        }
+    }
+}