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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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46
X86Disassembler/X86/Handlers/Or/OrRm8R8Handler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.Or;
/// <summary>
@ -8,11 +10,9 @@ public class OrRm8R8Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the OrRm8R8Handler 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 OrRm8R8Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public OrRm8R8Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -34,8 +34,8 @@ public class OrRm8R8Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "or";
// Set the instruction type
instruction.Type = InstructionType.Or;
// Check if we have enough bytes for the ModR/M byte
if (!Decoder.CanReadByte())
@ -43,28 +43,24 @@ public class OrRm8R8Handler : InstructionHandler
return false;
}
// Read the ModR/M byte and decode the operands
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte
// For OR r/m8, r8 (0x08):
// - 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();
// The register operand is in the reg field (8-bit register)
string regOperand = ModRMDecoder.GetRegisterName(reg, 8);
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
// Handle the r/m operand based on mod field
string rmOperand;
// Create the source register operand
var sourceOperand = OperandFactory.CreateRegisterOperand(reg, 8);
if (mod == 3) // Register-to-register
{
// Direct register addressing
rmOperand = ModRMDecoder.GetRegisterName(rm, 8);
}
else // Memory addressing
{
// Replace "dword ptr" with "byte ptr" for 8-bit operands
rmOperand = destOperand.Replace("dword ptr", "byte ptr");
}
// Set the operands (r/m8, r8 format)
instruction.Operands = $"{rmOperand}, {regOperand}";
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}