0c1ea1212a
* 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
58 lines
2.3 KiB
C#
58 lines
2.3 KiB
C#
using Ryujinx.HLE.Exceptions;
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using Ryujinx.HLE.HOS.Tamper.Operations;
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using System;
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namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
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{
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/// <summary>
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/// Code type 7 allows performing arithmetic on registers. However, it has been deprecated by Code
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/// type 9, and is only kept for backwards compatibility.
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/// </summary>
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class LegacyArithmetic
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{
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const int OperationWidthIndex = 1;
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const int DestinationRegisterIndex = 3;
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const int OperationTypeIndex = 4;
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const int ValueImmediateIndex = 8;
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const int ValueImmediateSize = 8;
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private const byte Add = 0; // reg += rhs
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private const byte Sub = 1; // reg -= rhs
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private const byte Mul = 2; // reg *= rhs
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private const byte Lsh = 3; // reg <<= rhs
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private const byte Rsh = 4; // reg >>= rhs
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public static void Emit(byte[] instruction, CompilationContext context)
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{
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// 7T0RC000 VVVVVVVV
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// T: Width of arithmetic operation(1, 2, 4, or 8 bytes).
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// R: Register to apply arithmetic to.
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// C: Arithmetic operation to apply, see below.
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// V: Value to use for arithmetic operation.
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byte operationWidth = instruction[OperationWidthIndex];
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Register register = context.GetRegister(instruction[DestinationRegisterIndex]);
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byte operation = instruction[OperationTypeIndex];
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ulong immediate = InstructionHelper.GetImmediate(instruction, ValueImmediateIndex, ValueImmediateSize);
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Value<ulong> rightHandSideValue = new Value<ulong>(immediate);
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void Emit(Type operationType)
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{
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InstructionHelper.Emit(operationType, operationWidth, context, register, register, rightHandSideValue);
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}
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switch (operation)
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{
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case Add: Emit(typeof(OpAdd<>)); break;
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case Sub: Emit(typeof(OpSub<>)); break;
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case Mul: Emit(typeof(OpMul<>)); break;
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case Lsh: Emit(typeof(OpLsh<>)); break;
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case Rsh: Emit(typeof(OpRsh<>)); break;
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default:
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throw new TamperCompilationException($"Invalid arithmetic operation {operation} in Atmosphere cheat");
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}
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}
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}
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}
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