39 lines
947 B
C#
39 lines
947 B
C#
|
using ChocolArm64.Instruction;
|
||
|
|
using System;
|
||
|
|
|
||
|
|
namespace ChocolArm64.Decoder
|
||
|
|
{
|
||
|
|
class AOpCodeAluImm : AOpCodeAlu, IAOpCodeAluImm
|
||
|
|
{
|
||
|
|
public long Imm { get; private set; }
|
||
|
|
|
||
|
|
public AOpCodeAluImm(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
|
||
|
|
{
|
||
|
|
if (DataOp == ADataOp.Arithmetic)
|
||
|
|
{
|
||
|
|
Imm = (OpCode >> 10) & 0xfff;
|
||
|
|
|
||
|
|
int Shift = (OpCode >> 22) & 3;
|
||
|
|
|
||
|
|
Imm <<= Shift * 12;
|
||
|
|
}
|
||
|
|
else if (DataOp == ADataOp.Logical)
|
||
|
|
{
|
||
|
|
var BM = ADecoderHelper.DecodeBitMask(OpCode, true);
|
||
|
|
|
||
|
|
if (BM.IsUndefined)
|
||
|
|
{
|
||
|
|
Emitter = AInstEmit.Und;
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
Imm = BM.WMask;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
throw new ArgumentException(nameof(OpCode));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|