//public static string GetSourceAsString( this IInstructionData aThis )
//{
// string xDest = "";
// if( ( aThis.SourceValue.HasValue || aThis.SourceRef != null ) &&
// aThis.SourceIsIndirect &&
// aThis.SourceReg != null )
// {
// throw new Exception( "[Scale*index+base] style addressing not supported at the moment" );
// }
// if( aThis.SourceRef != null )
// {
// xDest = aThis.SourceRef.ToString();
// }
// else
// {
// if( aThis.SourceReg != null )
// {
// xDest = Registers.GetRegisterName( aThis.SourceReg.Value );
// }
// else
// {
// xDest = "0x" + aThis.SourceValue.GetValueOrDefault().ToString( "X" ).ToUpperInvariant();
// }
// }
// if( aThis.SourceDisplacement != 0 )
// {
// xDest += " + " + aThis.SourceDisplacement;
// }
// if( aThis.SourceIsIndirect )
// {
// return "[" + xDest + "]";
// }
// else
// {
// return xDest;
// }
//}
//public static string GetDestinationAsString( this IInstructionData aThis )
//{
// string xDest = "";
// if( ( aThis.DestinationValue.HasValue || aThis.DestinationRef != null ) &&
// aThis.DestinationIsIndirect &&
// aThis.DestinationReg != null )
// {
// throw new Exception( "[Scale*index+base] style addressing not supported at the moment" );
// }
// if( aThis.DestinationRef != null )
// {
// xDest = aThis.DestinationRef.ToString();
// }
// else
// {
// if( aThis.DestinationReg != null )
// {
// xDest = Registers.GetRegisterName( aThis.DestinationReg.Value );
// }
// else
// {
// xDest = "0x" + aThis.DestinationValue.GetValueOrDefault().ToString( "X" ).ToUpperInvariant();
// }
// }
// if( aThis.DestinationDisplacement != 0 )
// {
// if( aThis.DestinationDisplacement > 255 )
// {
// xDest += " + 0x" + aThis.DestinationDisplacement.ToString( "X" );
// }
// else
// {
// xDest += " + " + aThis.DestinationDisplacement;
// }
// }
// if( aThis.DestinationIsIndirect )
// {
// return String.Intern( "[" + xDest + "]" );
// }
// else
// {
// return String.Intern( xDest );
// }
//}
//public static void DetermineSize( this IInstructionData aThis, IInstructionData aThis2, byte aSize )
//{
// if( aSize == 0 )
// {
// if( aThis.DestinationReg != null && !aThis.DestinationIsIndirect )
// {
// if( Registers.Is16Bit( aThis.DestinationReg.Value ) )
// {
// aThis2.Size = ( InstructionSize )16;
// }
// else
// {
// if( Registers.Is32Bit( aThis.DestinationReg.Value ) )
// {
// aThis2.Size = ( InstructionSize )32;
// }
// else
// {
// aThis2.Size = ( InstructionSize )8;
// }
// }
// return;
// }
// if( aThis.DestinationRef != null && !aThis.DestinationIsIndirect )
// {
// aThis2.Size = ( InstructionSize )32;
// return;
// }
// }
//}
public static string GetMnemonic(this ConditionalTestEnum aThis)
{
switch (aThis)
{
case ConditionalTestEnum.Overflow:
return("o");
case ConditionalTestEnum.NoOverflow:
return("no");
case ConditionalTestEnum.Below:
return("b");
case ConditionalTestEnum.NotBelow:
return("nb");
case ConditionalTestEnum.Equal:
return("e");
case ConditionalTestEnum.NotEqual:
return("ne");
case ConditionalTestEnum.BelowOrEqual:
return("be");
case ConditionalTestEnum.NotBelowOrEqual:
return("nbe");
case ConditionalTestEnum.Sign:
return("s");
case ConditionalTestEnum.NotSign:
return("ns");
case ConditionalTestEnum.Parity:
return("p");
case ConditionalTestEnum.NotParity:
return("np");
case ConditionalTestEnum.LessThan:
return("l");
case ConditionalTestEnum.NotLessThan:
return("nl");
case ConditionalTestEnum.LessThanOrEqualTo:
return("le");
case ConditionalTestEnum.NotLessThanOrEqualTo:
return("nle");
default: throw new NotImplementedException();
}
}
public void EmitBooleanBranch(bool v, Label truecase, ConditionalTestEnum tr, ConditionalTestEnum fls)
{
if (v)
{
EmitInstruction(new ConditionalJump()
{
Condition = tr, DestinationLabel = truecase.Name
});
}
else
{
EmitInstruction(new ConditionalJump()
{
Condition = fls, DestinationLabel = truecase.Name
});
}
}
public void EmitBoolean(RegistersEnum rg, ConditionalTestEnum tr, ConditionalTestEnum fls)
{
// EmitInstruction(new Xor() { SourceReg = ag.GetHolder(rg), DestinationReg = ag.GetHolder(rg), Size = 80 });
EmitInstruction(new ConditionalSet()
{
Condition = tr, DestinationReg = GetLow(rg), Size = 80
});
EmitInstruction(new MoveZeroExtend()
{
SourceReg = GetLow(rg), DestinationReg = ag.GetHolder(rg), Size = 80
});
/*
* EmitInstruction(new ConditionalMove() { Condition = tr, DestinationReg = rg, Size = 80, SourceValue = TRUE });
* EmitInstruction(new ConditionalMove() { Condition = fls, DestinationReg = rg, Size = 80, SourceValue = 0 });
*
* */
}
public void EmitBooleanWithJump(RegistersEnum rg, ConditionalTestEnum TR)
{
string lbname = EmitContext.GenerateLabelName(LabelType.BOOL_EXPR);
Label truelb = DefineLabel(lbname + "_TRUE");
Label falselb = DefineLabel(lbname + "_FALSE");
Label boolexprlb = DefineLabel(lbname + "_END");
// jumps
EmitInstruction(new ConditionalJump()
{
Condition = TR, DestinationLabel = truelb.Name
});
EmitInstruction(new Jump()
{
DestinationLabel = falselb.Name
}); // false
// emit true and false
// true
MarkLabel(truelb);
EmitInstruction(new Mov()
{
DestinationReg = EmitContext.A, SourceValue = TRUE, Size = 8
});
EmitInstruction(new Jump()
{
DestinationLabel = boolexprlb.Name
}); // exit
// false
MarkLabel(falselb);
EmitInstruction(new Mov()
{
DestinationReg = EmitContext.A, SourceValue = 0, Size = 8
});
// mark exit
MarkLabel(boolexprlb);
}
public static void Jump(ConditionalTestEnum condition, string label)
{
new ConditionalJump {
Condition = condition, DestinationLabel = label
};
}
