R/ARMeilleure/Decoders/OpCode32SimdRev.cs

23 lines
1 KiB
C#

namespace ARMeilleure.Decoders
{
class OpCode32SimdRev : OpCode32SimdCmpZ
{
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRev(inst, address, opCode, false);
public new static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRev(inst, address, opCode, true);
public OpCode32SimdRev(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode, isThumb)
{
if (Opc + Size >= 3)
{
Instruction = InstDescriptor.Undefined;
return;
}
// Currently, this instruction is treated as though it's OPCODE is the true size,
// which lets us deal with reversing vectors on a single element basis (eg. math magic an I64 rather than insert lots of I8s).
int tempSize = Size;
Size = 3 - Opc; // Op 0 is 64 bit, 1 is 32 and so on.
Opc = tempSize;
}
}
}