public AOpCodeSimdImm(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
{
Rd = OpCode & 0x1f;
int CMode = (OpCode >> 12) & 0xf;
int Op = (OpCode >> 29) & 0x1;
int ModeLow = CMode & 1;
int ModeHigh = CMode >> 1;
long Imm;
Imm = ((uint)OpCode >> 5) & 0x1f;
Imm |= ((uint)OpCode >> 11) & 0xe0;
if (ModeHigh == 0b111)
{
Size = ModeLow != 0 ? Op : 3;
switch (Op | (ModeLow << 1))
{
case 0:
//64-bits Immediate.
//Transform abcd efgh into abcd efgh abcd efgh ...
Imm = (long)((ulong)Imm * 0x0101010101010101);
break;
case 1:
//64-bits Immediate.
//Transform abcd efgh into aaaa aaaa bbbb bbbb ...
Imm = (Imm & 0xf0) >> 4 | (Imm & 0x0f) << 4;
Imm = (Imm & 0xcc) >> 2 | (Imm & 0x33) << 2;
Imm = (Imm & 0xaa) >> 1 | (Imm & 0x55) << 1;
Imm = (long)((ulong)Imm * 0x8040201008040201);
Imm = (long)((ulong)Imm & 0x8080808080808080);
Imm |= Imm >> 4;
Imm |= Imm >> 2;
Imm |= Imm >> 1;
break;
case 2:
case 3:
//Floating point Immediate.
Imm = ADecoderHelper.DecodeImm8Float(Imm, Size);
break;
}
}
else if ((ModeHigh & 0b110) == 0b100)
{
//16-bits shifted Immediate.
Size = 1; Imm <<= (ModeHigh & 1) << 3;
}
public AOpCodeSimdFmov(AInst Inst, long Position, int OpCode) : base(Inst, Position, OpCode)
{
int Imm5 = (OpCode >> 5) & 0x1f;
int Type = (OpCode >> 22) & 0x3;
if (Imm5 != 0b00000 || Type > 1)
{
Emitter = AInstEmit.Und;
return;
}
Size = Type;
long Imm;
Rd = (OpCode >> 0) & 0x1f;
Imm = (OpCode >> 13) & 0xff;
this.Imm = ADecoderHelper.DecodeImm8Float(Imm, Type);
}
