mirrors/ParkanPlayground
0
Fork 0
mirror of https://github.com/sampletext32/ParkanPlayground.git synced 2025-06-20 08:18:36 +03:00
Code Issues Releases Activity

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

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

35
X86Disassembler/X86/Handlers/Or/OrImmToRm32SignExtendedHandler.cs
View File

@ -1,5 +1,7 @@
namespace X86Disassembler.X86.Handlers.Or;
using X86Disassembler.X86.Operands;
/// <summary>
/// Handler for OR r/m32, imm8 (sign-extended) instruction (0x83 /1)
/// </summary>
@ -8,11 +10,9 @@ public class OrImmToRm32SignExtendedHandler : InstructionHandler
/// <summary>
/// Initializes a new instance of the OrImmToRm32SignExtendedHandler 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 OrImmToRm32SignExtendedHandler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public OrImmToRm32SignExtendedHandler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -30,7 +30,7 @@ public class OrImmToRm32SignExtendedHandler : InstructionHandler
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[Decoder.GetPosition()];
byte modRM = Decoder.PeakByte();
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 1; // 1 = OR
@ -44,12 +44,10 @@ public class OrImmToRm32SignExtendedHandler : 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;
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}
@ -58,16 +56,23 @@ public class OrImmToRm32SignExtendedHandler : InstructionHandler
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// Read the immediate value (sign-extended from 8 to 32 bits)
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}
// Sign-extend to 32 bits
int imm32 = (sbyte) Decoder.ReadByte();
// Set the operands
instruction.Operands = $"{destOperand}, 0x{imm32:X8}";
sbyte imm8 = (sbyte) Decoder.ReadByte();
// Create the immediate operand with sign extension
var immOperand = OperandFactory.CreateImmediateOperand(imm8);
// Set the structured operands
instruction.StructuredOperands =
[
destOperand,
immOperand
];
return true;
}