/// <summary>
/// Prints an operand cast.
/// </summary>
/// <param name="u">TODO u.</param>
/// <param name="op">TODO op.</param>
public void OperandCast(ref Ud u, ref UdOperand op)
{
if (u.BrFar > 0)
{
Syn.UdAsmPrintf(ref u, "far ");
}
switch (op.Size)
{
case 8:
Syn.UdAsmPrintf(ref u, "byte ");
break;
case 16:
Syn.UdAsmPrintf(ref u, "word ");
break;
case 32:
Syn.UdAsmPrintf(ref u, "dword ");
break;
case 64:
Syn.UdAsmPrintf(ref u, "qword ");
break;
case 80:
Syn.UdAsmPrintf(ref u, "tword ");
break;
default:
break;
}
}
/// <summary>
/// translates to intel syntax.
/// </summary>
/// <param name="u">TODO u.</param>
public void UdTranslateIntel(ref Ud u)
{
// Check if P_OSO prefix is used
if (BitOps.P_OSO(u.ItabEntry.Prefix) == 0 && u.PfxOpr > 0)
{
switch (u.DisMode)
{
case 16:
Syn.UdAsmPrintf(ref u, "o32 ");
break;
case 32:
case 64:
Syn.UdAsmPrintf(ref u, "o16 ");
break;
}
}
// Check if P_ASO prefix was used
if (BitOps.P_ASO(u.ItabEntry.Prefix) == 0 && u.PfxAdr > 0)
{
switch (u.DisMode)
{
case 16:
Syn.UdAsmPrintf(ref u, "a32 ");
break;
case 32:
Syn.UdAsmPrintf(ref u, "a16 ");
break;
case 64:
Syn.UdAsmPrintf(ref u, "a32 ");
break;
}
}
if (u.PfxSeg > 0 && u.Operand[0].UdType != UdType.UD_OP_MEM && u.Operand[1].UdType != UdType.UD_OP_MEM)
{
Syn.UdAsmPrintf(ref u, "{0} ", Syn.UdRegTab[u.PfxSeg - (byte)UdType.UD_R_AL]);
}
if (u.PfxLock > 0)
{
Syn.UdAsmPrintf(ref u, "lock ");
}
if (u.PfxRep > 0)
{
Syn.UdAsmPrintf(ref u, "rep ");
}
else if (u.PfxRepe > 0)
{
Syn.UdAsmPrintf(ref u, "repe ");
}
else if (u.PfxRepne > 0)
{
Syn.UdAsmPrintf(ref u, "repne ");
}
// Print the instruction mnemonic
Syn.UdAsmPrintf(ref u, "{0}", Udis86.UdLookupMnemonic(u.Mnemonic));
if (u.Operand[0].UdType != UdType.UD_NONE)
{
Int32 cast = 0;
Syn.UdAsmPrintf(ref u, " ");
if (u.Operand[0].UdType == UdType.UD_OP_MEM)
{
if (u.Operand[1].UdType == UdType.UD_OP_IMM ||
u.Operand[1].UdType == UdType.UD_OP_CONST ||
u.Operand[1].UdType == UdType.UD_NONE ||
(u.Operand[0].Size != u.Operand[1].Size &&
u.Operand[1].UdType != UdType.UD_OP_REG))
{
cast = 1;
}
else if (u.Operand[1].UdType == UdType.UD_OP_REG &&
u.Operand[1].Base == UdType.UD_R_CL)
{
switch (u.Mnemonic)
{
case UdMnemonicCode.UD_Ircl:
case UdMnemonicCode.UD_Irol:
case UdMnemonicCode.UD_Iror:
case UdMnemonicCode.UD_Ircr:
case UdMnemonicCode.UD_Ishl:
case UdMnemonicCode.UD_Ishr:
case UdMnemonicCode.UD_Isar:
cast = 1;
break;
default: break;
}
}
}
this.GenOperand(ref u, ref u.Operand[0], cast);
}
if (u.Operand[1].UdType != UdType.UD_NONE)
{
Int32 cast = 0;
Syn.UdAsmPrintf(ref u, ", ");
if (u.Operand[1].UdType == UdType.UD_OP_MEM &&
u.Operand[0].Size != u.Operand[1].Size &&
!Udis86.UdOprIsSeg(u.Operand[0]))
{
cast = 1;
}
this.GenOperand(ref u, ref u.Operand[1], cast);
}
if (u.Operand[2].UdType != UdType.UD_NONE)
{
Int32 cast = 0;
Syn.UdAsmPrintf(ref u, ", ");
if (u.Operand[2].UdType == UdType.UD_OP_MEM &&
u.Operand[2].Size != u.Operand[1].Size)
{
cast = 1;
}
this.GenOperand(ref u, ref u.Operand[2], cast);
}
if (u.Operand[3].UdType != UdType.UD_NONE)
{
Syn.UdAsmPrintf(ref u, ", ");
this.GenOperand(ref u, ref u.Operand[3], 0);
}
}
/// <summary>
/// Generates assembly output for each operand.
/// </summary>
/// <param name="u">TODO u.</param>
/// <param name="op">TODO op.</param>
/// <param name="synCast">TODO synCast.</param>
private void GenOperand(ref Ud u, ref UdOperand op, Int32 synCast)
{
switch (op.UdType)
{
case UdType.UD_OP_REG:
Syn.UdAsmPrintf(ref u, "{0}", Syn.UdRegTab[op.Base - UdType.UD_R_AL]);
break;
case UdType.UD_OP_MEM:
if (synCast > 0)
{
this.OperandCast(ref u, ref op);
}
Syn.UdAsmPrintf(ref u, "[");
if (u.PfxSeg > 0)
{
Syn.UdAsmPrintf(ref u, "{0}:", Syn.UdRegTab[u.PfxSeg - (int)UdType.UD_R_AL]);
}
if (op.Base > 0)
{
Syn.UdAsmPrintf(ref u, "{0}", Syn.UdRegTab[op.Base - UdType.UD_R_AL]);
}
if (op.Index > 0)
{
Syn.UdAsmPrintf(ref u, "{0}{1}", op.Base != UdType.UD_NONE ? "+" : String.Empty, Syn.UdRegTab[op.Index - UdType.UD_R_AL]);
if (op.Scale > 0)
{
Syn.UdAsmPrintf(ref u, "*{0}", op.Scale);
}
}
if (op.Offset != 0)
{
this.UdSynPrintMemDisp(ref u, ref op, (op.Base != UdType.UD_NONE || op.Index != UdType.UD_NONE) ? 1 : 0);
}
Syn.UdAsmPrintf(ref u, "]");
break;
case UdType.UD_OP_IMM:
this.UdSynPrintImm(ref u, ref op);
break;
case UdType.UD_OP_JIMM:
this.UdSynPrintAddr(ref u, (Int64)this.UdSynRelTarget(ref u, ref op));
break;
case UdType.UD_OP_PTR:
switch (op.Size)
{
case 32:
Syn.UdAsmPrintf(ref u, "word 0x{0:x}:0x{1:x}", op.Lval.PtrSeg, op.Lval.PtrOff & 0xFFFF);
break;
case 48:
Syn.UdAsmPrintf(ref u, "dword 0x{0:x}:0x{0:x}", op.Lval.PtrSeg, op.Lval.PtrOff);
break;
}
break;
case UdType.UD_OP_CONST:
if (synCast > 0)
{
this.OperandCast(ref u, ref op);
}
Syn.UdAsmPrintf(ref u, "{0}", op.Lval.UdWord);
break;
default:
return;
}
}