R/ARMeilleure/Decoders/OpCodeSimdMemMs.cs
gdkchan 2f16491712
Get rid of Reflection.Emit dependency on CPU and Shader projects (#1626)
* Get rid of Reflection.Emit dependency on CPU and Shader projects

* Remove useless private sets

* Missed those due to the alignment
2020-10-21 09:13:44 -03:00

48 lines
No EOL
1.5 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) => new OpCodeSimdMemMs(inst, address, opCode);
public OpCodeSimdMemMs(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
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;
}
}
}