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

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* 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
This commit is contained in:
Caian Benedicto 2021-03-27 11:12:05 -03:00 • committed by GitHub
parent a5d5ca0635
commit 0c1ea1212a
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71 changed files with 2793 additions and 5 deletions
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45
Ryujinx.HLE/HOS/Tamper/CodeEmitters/MemoryConditional.cs Normal file
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using Ryujinx.HLE.HOS.Tamper.Conditions;
namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
{
/// <summary>
/// Code type 1 performs a comparison of the contents of memory to a static value.
/// If the condition is not met, all instructions until the appropriate conditional block terminator
/// are skipped.
/// </summary>
class MemoryConditional
{
private const int OperationWidthIndex = 1;
private const int MemoryRegionIndex = 2;
private const int ComparisonTypeIndex = 3;
private const int OffsetImmediateIndex = 6;
private const int ValueImmediateIndex = 16;
private const int OffsetImmediateSize = 10;
private const int ValueImmediateSize4 = 8;
private const int ValueImmediateSize8 = 16;
public static ICondition Emit(byte[] instruction, CompilationContext context)
{
// 1TMC00AA AAAAAAAA VVVVVVVV (VVVVVVVV)
// T: Width of memory write (1, 2, 4, or 8 bytes).
// M: Memory region to write to (0 = Main NSO, 1 = Heap).
// C: Condition to use, see below.
// A: Immediate offset to use from memory region base.
// V: Value to compare to.
byte operationWidth = instruction[OperationWidthIndex];
MemoryRegion memoryRegion = (MemoryRegion)instruction[MemoryRegionIndex];
Comparison comparison = (Comparison)instruction[ComparisonTypeIndex];
ulong address = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, OffsetImmediateSize);
Pointer sourceMemory = MemoryHelper.EmitPointer(memoryRegion, address, context);
int valueSize = operationWidth <= 4 ? ValueImmediateSize4 : ValueImmediateSize8;
ulong value = InstructionHelper.GetImmediate(instruction, ValueImmediateIndex, valueSize);
Value<ulong> compareToValue = new Value<ulong>(value);
return InstructionHelper.CreateCondition(comparison, operationWidth, sourceMemory, compareToValue);
}
}
}