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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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43
X86Disassembler/X86/Handlers/Cmp/CmpRm32R32Handler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.Cmp;
/// <summary>
@ -8,11 +10,9 @@ public class CmpRm32R32Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the CmpRm32R32Handler 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 CmpRm32R32Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public CmpRm32R32Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -34,8 +34,8 @@ public class CmpRm32R32Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "cmp";
// Set the instruction type
instruction.Type = InstructionType.Cmp;
if (!Decoder.CanReadByte())
{
@ -43,27 +43,20 @@ public class CmpRm32R32Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// For CMP r/m32, r32 (0x39):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The reg field specifies the source register
var (mod, reg, rm, destinationOperand) = ModRMDecoder.ReadModRM();
// Get the register name for the reg field
string regName = ModRMDecoder.GetRegisterName(reg, 32);
// Create the source register operand
var sourceOperand = OperandFactory.CreateRegisterOperand(reg, 32);
// Use the destOperand directly from ModRMDecoder
string rmOperand = destOperand;
// If it's a direct register operand, we need to remove the size prefix
if (mod == 3)
{
rmOperand = ModRMDecoder.GetRegisterName(rm, 32);
}
else if (rmOperand.StartsWith("dword ptr "))
{
// Remove the "dword ptr " prefix as we'll handle the operands differently
rmOperand = rmOperand.Substring(10);
}
// Set the operands
instruction.Operands = $"{rmOperand}, {regName}";
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}