Add the TamperMachine module for runtime mods and cheats (#1928)

* Add initial implementation of the Tamper Machine * Implement Atmosphere opcodes 0, 4 and 9 * Add missing TamperCompilationException class * Implement Atmosphere conditional and loop opcodes 1, 2 and 3 * Inplement input conditional opcode 8 * Add register store opcode A * Implement extended pause/resume opcodes FF0 and FF1 * Implement extended log opcode FFF * Implement extended register conditional opcode C0 * Refactor TamperProgram to an interface * Moved Atmosphere classes to a separate subdirectory * Fix OpProcCtrl class not setting process * Implement extended register save/restore opcodes C1, C2 and C3 * Refactor code emitters to separate classes * Supress memory access errors from the Tamper Machine * Add debug information to tamper register and memory writes * Add block stack check to Atmosphere Cheat compiler * Add handheld input support to Tamper Machine * Fix code styling * Fix build id and cheat case mismatch * Fix invalid immediate size selection * Print build ids of the title * Prevent Tamper Machine from change code regions * Remove Atmosphere namespace * Remove empty cheats from the list * Prevent code modification without disabling the tampering * Fix missing addressing mode in LoadRegisterWithMemory * Fix wrong addressing in RegisterConditional * Add name to the tamper machine thread * Fix code styling
2021-03-27 11:12:05 -03:00 · 2021-03-27 11:12:05 -03:00 · 0c1ea1212a
commit 0c1ea1212a
parent a5d5ca0635
71 changed files with 2793 additions and 5 deletions
--- a/Ryujinx.HLE/HOS/Tamper/MemoryHelper.cs
+++ b/Ryujinx.HLE/HOS/Tamper/MemoryHelper.cs
@ -0,0 +1,89 @@
+using Ryujinx.HLE.Exceptions;
+using Ryujinx.HLE.HOS.Tamper.Operations;
+
+namespace Ryujinx.HLE.HOS.Tamper
+{
+    class MemoryHelper
+    {
+        public static ulong GetAddressShift(MemoryRegion source, CompilationContext context)
+        {
+            switch (source)
+            {
+                case MemoryRegion.NSO:
+                    // Memory address is relative to the code start.
+                    return context.ExeAddress;
+                case MemoryRegion.Heap:
+                    // Memory address is relative to the heap.
+                    return context.HeapAddress;
+                default:
+                    throw new TamperCompilationException($"Invalid memory source {source} in Atmosphere cheat");
+            }
+        }
+
+        private static void EmitAdd(Value<ulong> finalValue, IOperand firstOperand, IOperand secondOperand, CompilationContext context)
+        {
+            context.CurrentOperations.Add(new OpAdd<ulong>(finalValue, firstOperand, secondOperand));
+        }
+
+        public static Pointer EmitPointer(ulong addressImmediate, CompilationContext context)
+        {
+            Value<ulong> addressImmediateValue = new Value<ulong>(addressImmediate);
+
+            return new Pointer(addressImmediateValue, context.Process);
+        }
+
+        public static Pointer EmitPointer(Register addressRegister, CompilationContext context)
+        {
+            return new Pointer(addressRegister, context.Process);
+        }
+
+        public static Pointer EmitPointer(Register addressRegister, ulong offsetImmediate, CompilationContext context)
+        {
+            Value<ulong> offsetImmediateValue = new Value<ulong>(offsetImmediate);
+            Value<ulong> finalAddressValue = new Value<ulong>(0);
+            EmitAdd(finalAddressValue, addressRegister, offsetImmediateValue, context);
+
+            return new Pointer(finalAddressValue, context.Process);
+        }
+
+        public static Pointer EmitPointer(Register addressRegister, Register offsetRegister, CompilationContext context)
+        {
+            Value<ulong> finalAddressValue = new Value<ulong>(0);
+            EmitAdd(finalAddressValue, addressRegister, offsetRegister, context);
+
+            return new Pointer(finalAddressValue, context.Process);
+        }
+
+        public static Pointer EmitPointer(Register addressRegister, Register offsetRegister, ulong offsetImmediate, CompilationContext context)
+        {
+            Value<ulong> offsetImmediateValue = new Value<ulong>(offsetImmediate);
+            Value<ulong> finalOffsetValue = new Value<ulong>(0);
+            EmitAdd(finalOffsetValue, offsetRegister, offsetImmediateValue, context);
+            Value<ulong> finalAddressValue = new Value<ulong>(0);
+            EmitAdd(finalAddressValue, addressRegister, finalOffsetValue, context);
+
+            return new Pointer(finalAddressValue, context.Process);
+        }
+
+        public static Pointer EmitPointer(MemoryRegion memoryRegion, ulong offsetImmediate, CompilationContext context)
+        {
+            offsetImmediate += GetAddressShift(memoryRegion, context);
+
+            return EmitPointer(offsetImmediate, context);
+        }
+
+        public static Pointer EmitPointer(MemoryRegion memoryRegion, Register offsetRegister, CompilationContext context)
+        {
+            ulong offsetImmediate = GetAddressShift(memoryRegion, context);
+
+            return EmitPointer(offsetRegister, offsetImmediate, context);
+        }
+
+        public static Pointer EmitPointer(MemoryRegion memoryRegion, Register offsetRegister, ulong offsetImmediate, CompilationContext context)
+        {
+            offsetImmediate += GetAddressShift(memoryRegion, context);
+
+            return EmitPointer(offsetRegister, offsetImmediate, context);
+        }
+    }
+}