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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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33
X86Disassembler/X86/Handlers/FloatingPoint/Int32OperationHandler.cs
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@ -3,7 +3,7 @@ namespace X86Disassembler.X86.Handlers.FloatingPoint;
/// <summary>
/// Handler for floating-point operations on int32 (DA opcode)
/// </summary>
public class Int32OperationHandler : FloatingPointBaseHandler
public class Int32OperationHandler : InstructionHandler
{
// DA opcode - operations on int32
private static readonly string[] Mnemonics =
@ -55,47 +55,40 @@ public class Int32OperationHandler : 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();
// 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, false);
instruction.Operands = operand;
instruction.Operands = destOperand;
}
else // Register operand (ST(i))
{
// Special handling for register-register operations
if (reg == 0) // FCMOVB
if (reg == RegisterIndex.A) // FCMOVB
{
instruction.Mnemonic = "fcmovb";
instruction.Operands = $"st(0), st({rm})";
instruction.Operands = $"st(0), st({(int)rm})";
}
else if (reg == 1) // FCMOVE
else if (reg == RegisterIndex.B) // FCMOVE
{
instruction.Mnemonic = "fcmove";
instruction.Operands = $"st(0), st({rm})";
instruction.Operands = $"st(0), st({(int)rm})";
}
else if (reg == 2) // FCMOVBE
else if (reg == RegisterIndex.C) // FCMOVBE
{
instruction.Mnemonic = "fcmovbe";
instruction.Operands = $"st(0), st({rm})";
instruction.Operands = $"st(0), st({(int)rm})";
}
else if (reg == 3) // FCMOVU
else if (reg == RegisterIndex.D) // FCMOVU
{
instruction.Mnemonic = "fcmovu";
instruction.Operands = $"st(0), st({rm})";
instruction.Operands = $"st(0), st({(int)rm})";
}
else if (reg == 5 && rm == 1) // FUCOMPP
else if (reg == RegisterIndex.Di && rm == RegisterIndex.B) // FUCOMPP
{
instruction.Mnemonic = "fucompp";
instruction.Operands = "";