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Fixed several instruction handling issues: 1) Added proper handling for zero displacements in memory operands, 2) Fixed large unsigned displacement values display, 3) Added CmpEaxImmHandler for CMP EAX, imm32 instruction, 4) Fixed JP and JNP conditional jump instruction types

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bird_egop
2025-04-16 19:43:03 +03:00
parent 193f9cd2d8
commit db96af74ff
13 changed files with 271 additions and 47 deletions
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24
X86Disassembler/X86/Operands/DisplacementMemoryOperand.cs
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@ -35,10 +35,30 @@ public class DisplacementMemoryOperand : MemoryOperand
/// </summary>
public override string ToString()
{
string sign = Displacement >= 0 ? "+" : "-";
// Get register name
var registerName = RegisterMapper.GetRegisterName(BaseRegister, 32);
string formattedDisplacement = $"0x{Displacement:X2}";
// Format the displacement value
string formattedDisplacement;
string sign;
// Handle positive and negative displacements
if (Displacement >= 0)
{
sign = "+";
formattedDisplacement = Displacement < 256
? $"0x{Displacement:X2}"
: $"0x{Displacement:X8}";
}
else
{
sign = "-";
// For negative values, take the absolute value for display
var absDisplacement = Math.Abs(Displacement);
formattedDisplacement = absDisplacement < 256
? $"0x{absDisplacement:X2}"
: $"0x{absDisplacement:X8}";
}
return $"{GetSizePrefix()}[{registerName}{sign}{formattedDisplacement}]";
}