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nice big refactor

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bird_egop
2025-04-13 23:06:52 +03:00
parent 59df064ca4
commit 11a2cfada4
92 changed files with 981 additions and 1509 deletions
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17
X86Disassembler/X86/Handlers/FloatingPoint/Float64OperationHandler.cs
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@ -3,7 +3,7 @@ namespace X86Disassembler.X86.Handlers.FloatingPoint;
/// <summary>
/// Handler for floating-point operations on float64 (DC opcode)
/// </summary>
public class Float64OperationHandler : FloatingPointBaseHandler
public class Float64OperationHandler : InstructionHandler
{
// DC opcode - operations on float64
private static readonly string[] Mnemonics =
@ -55,27 +55,20 @@ public class Float64OperationHandler : FloatingPointBaseHandler
}
// Read the ModR/M byte
byte modRM = CodeBuffer[position++];
Decoder.SetPosition(position);
// Extract the fields from the ModR/M byte
byte mod = (byte)((modRM & 0xC0) >> 6);
byte reg = (byte)((modRM & 0x38) >> 3);
byte rm = (byte)(modRM & 0x07);
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM(true); // true for 64-bit operand
// Set the mnemonic based on the opcode and reg field
instruction.Mnemonic = Mnemonics[reg];
instruction.Mnemonic = Mnemonics[(int)reg];
// For memory operands, set the operand
if (mod != 3) // Memory operand
{
string operand = ModRMDecoder.DecodeModRM(mod, rm, true); // true for 64-bit operand
instruction.Operands = operand;
instruction.Operands = destOperand;
}
else // Register operand (ST(i))
{
// For DC C0-DC FF, the operands are reversed: ST(i), ST(0)
instruction.Operands = $"st({rm}), st(0)";
instruction.Operands = $"st({(int)rm}), st(0)";
}
return true;