Ryujinx/ARMeilleure/Decoders/OpCodeSimdMemMs.cs
2022-02-11 23:08:01 +00:00

48 lines
No EOL
1.6 KiB
C#

namespace ARMeilleure.Decoders
{
class OpCodeSimdMemMs : OpCodeMemReg, IOpCodeSimd
{
public int Reps { get; }
public int SElems { get; }
public int Elems { get; }
public bool WBack { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode, bool inITBlock) => new OpCodeSimdMemMs(inst, address, opCode, inITBlock);
public OpCodeSimdMemMs(InstDescriptor inst, ulong address, int opCode, bool inITBlock) : base(inst, address, opCode, inITBlock)
{
switch ((opCode >> 12) & 0xf)
{
case 0b0000: Reps = 1; SElems = 4; break;
case 0b0010: Reps = 4; SElems = 1; break;
case 0b0100: Reps = 1; SElems = 3; break;
case 0b0110: Reps = 3; SElems = 1; break;
case 0b0111: Reps = 1; SElems = 1; break;
case 0b1000: Reps = 1; SElems = 2; break;
case 0b1010: Reps = 2; SElems = 1; break;
default: Instruction = InstDescriptor.Undefined; return;
}
Size = (opCode >> 10) & 3;
WBack = ((opCode >> 23) & 1) != 0;
bool q = ((opCode >> 30) & 1) != 0;
if (!q && Size == 3 && SElems != 1)
{
Instruction = InstDescriptor.Undefined;
return;
}
Extend64 = false;
RegisterSize = q
? RegisterSize.Simd128
: RegisterSize.Simd64;
Elems = (GetBitsCount() >> 3) >> Size;
}
}
}