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Refactored instruction decoder to improve modularity. Created StringInstructionDecoder and updated PrefixDecoder. Fixed handler registration in InstructionHandlerFactory.

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bird_egop
2025-04-13 02:16:12 +03:00
parent c14a92bf04
commit 9dfa559045
4 changed files with 362 additions and 147 deletions
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74
X86Disassembler/X86/Handlers/InstructionHandlerFactory.cs
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@ -13,6 +13,7 @@ using X86Disassembler.X86.Handlers.Or;
using X86Disassembler.X86.Handlers.Pop;
using X86Disassembler.X86.Handlers.Push;
using X86Disassembler.X86.Handlers.Ret;
using X86Disassembler.X86.Handlers.String;
using X86Disassembler.X86.Handlers.Test;
using X86Disassembler.X86.Handlers.Xchg;
using X86Disassembler.X86.Handlers.Xor;
@ -41,32 +42,36 @@ public class InstructionHandlerFactory
_decoder = decoder;
_length = length;
RegisterHandlers();
RegisterAllHandlers();
}
/// <summary>
/// Registers all handlers
/// </summary>
private void RegisterHandlers()
private void RegisterAllHandlers()
{
// Register specific instruction handlers
_handlers.Add(new Int3Handler(_codeBuffer, _decoder, _length));
RegisterArithmeticUnaryHandlers();
RegisterArithmeticImmediateHandlers();
RegisterReturnHandlers();
RegisterCallHandlers();
RegisterJumpHandlers();
RegisterTestHandlers();
RegisterArithmeticUnaryHandlers();
RegisterAddHandlers();
RegisterCmpHandlers();
RegisterXorHandlers();
RegisterOrHandlers();
RegisterLeaHandlers();
RegisterCmpHandlers();
RegisterTestHandlers();
RegisterDataTransferHandlers();
RegisterJumpHandlers();
RegisterCallHandlers();
RegisterReturnHandlers();
RegisterDecHandlers();
RegisterIncHandlers();
RegisterAddHandlers();
RegisterDataTransferHandlers();
RegisterPushHandlers();
RegisterPopHandlers();
RegisterLeaHandlers();
RegisterFloatingPointHandlers();
RegisterStringHandlers();
RegisterMovHandlers();
}
/// <summary>
@ -295,6 +300,51 @@ public class InstructionHandlerFactory
_handlers.Add(new LoadStoreInt16Handler(_codeBuffer, _decoder, _length));
}
/// <summary>
/// Registers all String instruction handlers
/// </summary>
private void RegisterStringHandlers()
{
// Add String instruction handlers
_handlers.Add(new RepMovsHandler(_codeBuffer, _decoder, _length));
}
/// <summary>
/// Registers all MOV instruction handlers
/// </summary>
private void RegisterMovHandlers()
{
// Add MOV handlers
_handlers.Add(new MovRegMemHandler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovMemRegHandler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovRegImm32Handler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovRegImm8Handler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovEaxMoffsHandler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovMoffsEaxHandler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovRm32Imm32Handler(_codeBuffer, _decoder, _length));
_handlers.Add(new MovRm8Imm8Handler(_codeBuffer, _decoder, _length));
}
/// <summary>
/// Registers all PUSH instruction handlers
/// </summary>
private void RegisterPushHandlers()
{
// Add PUSH handlers
_handlers.Add(new PushRegHandler(_codeBuffer, _decoder, _length));
_handlers.Add(new PushImm32Handler(_codeBuffer, _decoder, _length));
_handlers.Add(new PushImm8Handler(_codeBuffer, _decoder, _length));
}
/// <summary>
/// Registers all POP instruction handlers
/// </summary>
private void RegisterPopHandlers()
{
// Add POP handlers
_handlers.Add(new PopRegHandler(_codeBuffer, _decoder, _length));
}
/// <summary>
/// Gets the handler that can decode the given opcode
/// </summary>