mirror of
https://github.com/Ryujinx/Ryujinx.git
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ff8849671a
* Enable write to memory and improve logging * Update tamper machine opcodes and improve reporting * Add Else support * Add missing private statement
95 lines
4 KiB
C#
95 lines
4 KiB
C#
using Ryujinx.HLE.Exceptions;
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using Ryujinx.HLE.HOS.Tamper.Operations;
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namespace Ryujinx.HLE.HOS.Tamper
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{
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class MemoryHelper
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{
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public static ulong GetAddressShift(MemoryRegion source, CompilationContext context)
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{
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switch (source)
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{
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case MemoryRegion.NSO:
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// Memory address is relative to the code start.
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return context.ExeAddress;
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case MemoryRegion.Heap:
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// Memory address is relative to the heap.
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return context.HeapAddress;
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case MemoryRegion.Alias:
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// Memory address is relative to the alias region.
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return context.AliasAddress;
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case MemoryRegion.Asrl:
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// Memory address is relative to the asrl region, which matches the code region.
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return context.AslrAddress;
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default:
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throw new TamperCompilationException($"Invalid memory source {source} in Atmosphere cheat");
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}
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}
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private static void EmitAdd(Value<ulong> finalValue, IOperand firstOperand, IOperand secondOperand, CompilationContext context)
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{
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context.CurrentOperations.Add(new OpAdd<ulong>(finalValue, firstOperand, secondOperand));
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}
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public static Pointer EmitPointer(ulong addressImmediate, CompilationContext context)
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{
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Value<ulong> addressImmediateValue = new Value<ulong>(addressImmediate);
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return new Pointer(addressImmediateValue, context.Process);
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}
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public static Pointer EmitPointer(Register addressRegister, CompilationContext context)
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{
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return new Pointer(addressRegister, context.Process);
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}
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public static Pointer EmitPointer(Register addressRegister, ulong offsetImmediate, CompilationContext context)
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{
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Value<ulong> offsetImmediateValue = new Value<ulong>(offsetImmediate);
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Value<ulong> finalAddressValue = new Value<ulong>(0);
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EmitAdd(finalAddressValue, addressRegister, offsetImmediateValue, context);
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return new Pointer(finalAddressValue, context.Process);
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}
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public static Pointer EmitPointer(Register addressRegister, Register offsetRegister, CompilationContext context)
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{
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Value<ulong> finalAddressValue = new Value<ulong>(0);
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EmitAdd(finalAddressValue, addressRegister, offsetRegister, context);
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return new Pointer(finalAddressValue, context.Process);
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}
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public static Pointer EmitPointer(Register addressRegister, Register offsetRegister, ulong offsetImmediate, CompilationContext context)
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{
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Value<ulong> offsetImmediateValue = new Value<ulong>(offsetImmediate);
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Value<ulong> finalOffsetValue = new Value<ulong>(0);
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EmitAdd(finalOffsetValue, offsetRegister, offsetImmediateValue, context);
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Value<ulong> finalAddressValue = new Value<ulong>(0);
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EmitAdd(finalAddressValue, addressRegister, finalOffsetValue, context);
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return new Pointer(finalAddressValue, context.Process);
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}
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public static Pointer EmitPointer(MemoryRegion memoryRegion, ulong offsetImmediate, CompilationContext context)
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{
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offsetImmediate += GetAddressShift(memoryRegion, context);
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return EmitPointer(offsetImmediate, context);
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}
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public static Pointer EmitPointer(MemoryRegion memoryRegion, Register offsetRegister, CompilationContext context)
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{
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ulong offsetImmediate = GetAddressShift(memoryRegion, context);
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return EmitPointer(offsetRegister, offsetImmediate, context);
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}
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public static Pointer EmitPointer(MemoryRegion memoryRegion, Register offsetRegister, ulong offsetImmediate, CompilationContext context)
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{
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offsetImmediate += GetAddressShift(memoryRegion, context);
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return EmitPointer(offsetRegister, offsetImmediate, context);
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}
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}
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}
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