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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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52
X86Disassembler/X86/Handlers/Xor/XorR16Rm16Handler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.Xor;
/// <summary>
@ -8,11 +10,9 @@ public class XorR16Rm16Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the XorR16Rm16Handler 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 XorR16Rm16Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public XorR16Rm16Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -35,8 +35,8 @@ public class XorR16Rm16Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "xor";
// Set the instruction type
instruction.Type = InstructionType.Xor;
if (!Decoder.CanReadByte())
{
@ -44,33 +44,23 @@ public class XorR16Rm16Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, memOperand) = ModRMDecoder.ReadModRM();
// For XOR r16, r/m16 (0x33 with 0x66 prefix):
// - The reg field specifies the destination register
// - The r/m field with mod specifies the source operand (register or memory)
var (mod, reg, rm, sourceOperand) = ModRMDecoder.ReadModRM();
// Get register name for the first operand (16-bit)
string regName = ModRMDecoder.GetRegisterName(reg, 16);
// Adjust the operand size to 16-bit
sourceOperand.Size = 16;
// Create the destination register operand
var destinationOperand = OperandFactory.CreateRegisterOperand(reg, 16);
// For the second operand, handle based on addressing mode
string rmOperand;
if (mod == 3) // Register addressing mode
{
// Get 16-bit register name for the second operand
rmOperand = ModRMDecoder.GetRegisterName(rm, 16);
}
else // Memory addressing mode
{
// For memory operands, replace "dword ptr" with "word ptr"
if (memOperand.StartsWith("dword ptr "))
{
rmOperand = memOperand.Replace("dword ptr", "word ptr");
}
else
{
rmOperand = memOperand;
}
}
// Set the operands
instruction.Operands = $"{regName}, {rmOperand}";
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}