Ryujinx/Ryujinx.HLE/HOS/Tamper/CodeEmitters/EndConditionalBlock.cs

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using Ryujinx.HLE.Exceptions;
using Ryujinx.HLE.HOS.Tamper.Conditions;
using Ryujinx.HLE.HOS.Tamper.Operations;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
{
/// <summary>
/// Code type 2 marks the end of a conditional block (started by Code Type 1, Code Type 8 or Code Type C0).
/// </summary>
class EndConditionalBlock
{
public static void Emit(byte[] instruction, CompilationContext context)
{
// 20000000
// Use the conditional begin instruction stored in the stack.
instruction = context.CurrentBlock.BaseInstruction;
CodeType codeType = InstructionHelper.GetCodeType(instruction);
// Pop the current block of operations from the stack so control instructions
// for the conditional can be emitted in the upper block.
IEnumerable<IOperation> operations = context.CurrentOperations;
context.BlockStack.Pop();
ICondition condition;
switch (codeType)
{
case CodeType.BeginMemoryConditionalBlock:
condition = MemoryConditional.Emit(instruction, context);
break;
case CodeType.BeginKeypressConditionalBlock:
condition = KeyPressConditional.Emit(instruction, context);
break;
case CodeType.BeginRegisterConditionalBlock:
condition = RegisterConditional.Emit(instruction, context);
break;
default:
throw new TamperCompilationException($"Conditional end does not match code type {codeType} in Atmosphere cheat");
}
// Create a conditional block with the current operations and nest it in the upper
// block of the stack.
IfBlock block = new IfBlock(condition, operations);
context.CurrentOperations.Add(block);
}
}
}