Unified ADC accumulator handlers into a single handler

X86Disassembler/X86/Handlers/Adc/AdcAccumulatorImmHandler.cs

@@ -0,0 +1,71 @@
+namespace X86Disassembler.X86.Handlers.Adc;
+
+using Operands;
+
+/// <summary>
+/// Handler for ADC AX/EAX, imm16/32 instruction (opcode 0x15)
+/// </summary>
+public class AdcAccumulatorImmHandler : InstructionHandler
+{
+    /// <summary>
+    /// Initializes a new instance of the AdcAccumulatorImmHandler class
+    /// </summary>
+    /// <param name="decoder">The instruction decoder that owns this handler</param>
+    public AdcAccumulatorImmHandler(InstructionDecoder decoder) 
+        : base(decoder)
+    {
+    }
+
+    /// <summary>
+    /// Checks if this handler can decode the given opcode
+    /// </summary>
+    /// <param name="opcode">The opcode to check</param>
+    /// <returns>True if this handler can decode the opcode</returns>
+    public override bool CanHandle(byte opcode)
+    {
+        // ADC AX/EAX, imm16/32 is encoded as 0x15
+        return opcode == 0x15;
+    }
+
+    /// <summary>
+    /// Decodes a ADC AX/EAX, imm16/32 instruction
+    /// </summary>
+    /// <param name="opcode">The opcode of the instruction</param>
+    /// <param name="instruction">The instruction object to populate</param>
+    /// <returns>True if the instruction was successfully decoded</returns>
+    public override bool Decode(byte opcode, Instruction instruction)
+    {
+        // Set the instruction type
+        instruction.Type = InstructionType.Adc;
+
+        // Determine operand size based on prefix
+        int operandSize = Decoder.HasOperandSizePrefix() ? 16 : 32;
+        
+        // Check if we have enough bytes for the immediate value
+        if (operandSize == 16 && !Decoder.CanReadUShort())
+        {
+            return false;
+        }
+        else if (operandSize == 32 && !Decoder.CanReadUInt())
+        {
+            return false;
+        }
+
+        // Create the accumulator register operand (AX or EAX)
+        var accumulatorOperand = OperandFactory.CreateRegisterOperand(RegisterIndex.A, operandSize);
+
+        // Read and create the immediate operand based on operand size
+        var immOperand = operandSize == 16 
+            ? OperandFactory.CreateImmediateOperand(Decoder.ReadUInt16(), operandSize)
+            : OperandFactory.CreateImmediateOperand(Decoder.ReadUInt32(), operandSize);
+
+        // Set the structured operands
+        instruction.StructuredOperands = 
+        [
+            accumulatorOperand,
+            immOperand
+        ];
+
+        return true;
+    }
+}