mirrors/ParkanPlayground
0
Fork 0
mirror of https://github.com/sampletext32/ParkanPlayground.git synced 2025-06-20 16:18:37 +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

52
X86Disassembler/X86/Handlers/And/AndImmToRm8Handler.cs
View File

@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.And;
/// <summary>
@ -8,11 +10,9 @@ public class AndImmToRm8Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the AndImmToRm8Handler 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 AndImmToRm8Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public AndImmToRm8Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -29,14 +29,13 @@ public class AndImmToRm8Handler : InstructionHandler
}
// Check if we have enough bytes to read the ModR/M byte
if (Decoder.CanReadByte())
if (!Decoder.CanReadByte())
{
return false;
}
int position = Decoder.GetPosition();
// Read the ModR/M byte to check the reg field (bits 5-3)
byte modRM = CodeBuffer[position];
byte modRM = Decoder.PeakByte();
int reg = (modRM >> 3) & 0x7;
// reg = 4 means AND operation
@ -51,11 +50,17 @@ public class AndImmToRm8Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "and";
// Set the instruction type
instruction.Type = InstructionType.And;
// Read the ModR/M byte
var (mod, reg, rm, memOperand) = ModRMDecoder.ReadModRM();
// For AND r/m8, imm8 (0x80 /4):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The immediate value is the source operand
var (mod, reg, rm, destinationOperand) = ModRMDecoder.ReadModRM();
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
if (!Decoder.CanReadByte())
{
@ -65,24 +70,15 @@ public class AndImmToRm8Handler : InstructionHandler
// Read the immediate value
byte imm8 = Decoder.ReadByte();
// Format the destination operand based on addressing mode
string destOperand;
if (mod == 3) // Register addressing mode
{
// Get 8-bit register name
destOperand = ModRMDecoder.GetRegisterName(rm, 8);
}
else // Memory addressing mode
{
// Add byte ptr prefix for memory operands
destOperand = $"byte ptr {memOperand}";
}
// Format the immediate value
string immStr = $"0x{imm8:X2}";
// Set the operands
instruction.Operands = $"{destOperand}, {immStr}";
// Create the source immediate operand
var sourceOperand = OperandFactory.CreateImmediateOperand(imm8, 8);
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}