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Code Issues Releases Activity

Updated instruction handlers to use Type and StructuredOperands instead of Mnemonic and Operands

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This commit is contained in:
bird_egop
2025-04-14 22:08:50 +03:00
parent c516e063e7
commit 685eeda03d
136 changed files with 3694 additions and 2584 deletions
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33
X86Disassembler/X86/Handlers/Sub/SubImmFromRm32SignExtendedHandler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.Sub;
/// <summary>
@ -8,11 +10,9 @@ public class SubImmFromRm32SignExtendedHandler : InstructionHandler
/// <summary>
/// Initializes a new instance of the SubImmFromRm32SignExtendedHandler class
/// </summary>
/// <param name="codeBuffer">The buffer containing the code to decode</param>
/// <param name="decoder">The instruction decoder that owns this handler</param>
/// <param name="length">The length of the buffer</param>
public SubImmFromRm32SignExtendedHandler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public SubImmFromRm32SignExtendedHandler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -30,7 +30,7 @@ public class SubImmFromRm32SignExtendedHandler : InstructionHandler
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[Decoder.GetPosition()];
byte modRM = Decoder.PeakByte();
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 5; // 5 = SUB
@ -44,8 +44,8 @@ public class SubImmFromRm32SignExtendedHandler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "sub";
// Set the instruction type
instruction.Type = InstructionType.Sub;
// Check if we have enough bytes for the ModR/M byte
if (!Decoder.CanReadByte())
@ -54,7 +54,7 @@ public class SubImmFromRm32SignExtendedHandler : InstructionHandler
}
// Extract the fields from the ModR/M byte
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
var (mod, reg, rm, destinationOperand) = ModRMDecoder.ReadModRM();
// Check if we have enough bytes for the immediate value
if (!Decoder.CanReadByte())
@ -65,14 +65,15 @@ public class SubImmFromRm32SignExtendedHandler : InstructionHandler
// Read the immediate value as a signed byte and sign-extend it to 32 bits
int imm32 = (sbyte) Decoder.ReadByte();
// Format the immediate value - use a consistent approach for all operands
// For negative values, show the full 32-bit representation
string immStr = imm32 < 0
? $"0x{(uint)imm32:X8}"
: $"0x{(byte)imm32:X2}";
// Set the operands
instruction.Operands = $"{destOperand}, {immStr}";
// Create the source immediate operand with the sign-extended value
var sourceOperand = OperandFactory.CreateImmediateOperand(imm32, 32);
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}