diff options
Diffstat (limited to 'src/ARMeilleure/Decoders/OpCode32SimdRegElem.cs')
| -rw-r--r-- | src/ARMeilleure/Decoders/OpCode32SimdRegElem.cs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/ARMeilleure/Decoders/OpCode32SimdRegElem.cs b/src/ARMeilleure/Decoders/OpCode32SimdRegElem.cs new file mode 100644 index 00000000..173c5265 --- /dev/null +++ b/src/ARMeilleure/Decoders/OpCode32SimdRegElem.cs @@ -0,0 +1,31 @@ +namespace ARMeilleure.Decoders +{ + class OpCode32SimdRegElem : OpCode32SimdReg + { + public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRegElem(inst, address, opCode, false); + public new static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdRegElem(inst, address, opCode, true); + + public OpCode32SimdRegElem(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode, isThumb) + { + Q = ((opCode >> (isThumb ? 28 : 24)) & 0x1) != 0; + F = ((opCode >> 8) & 0x1) != 0; + Size = (opCode >> 20) & 0x3; + + RegisterSize = Q ? RegisterSize.Simd128 : RegisterSize.Simd64; + + if (Size == 1) + { + Vm = ((opCode >> 3) & 0x1) | ((opCode >> 4) & 0x2) | ((opCode << 2) & 0x1c); + } + else /* if (Size == 2) */ + { + Vm = ((opCode >> 5) & 0x1) | ((opCode << 1) & 0x1e); + } + + if (GetType() == typeof(OpCode32SimdRegElem) && DecoderHelper.VectorArgumentsInvalid(Q, Vd, Vn) || Size == 0 || (Size == 1 && F)) + { + Instruction = InstDescriptor.Undefined; + } + } + } +} |