Ryujinx/ARMeilleure/Decoders/OpCode32SimdRegElem.cs
gdkchan c26f3774bd
Implement VMULL, VMLSL, VRSHR, VQRSHRN, VQRSHRUN AArch32 instructions + other fixes (#977)
* Implement VMULL, VMLSL, VQRSHRN, VQRSHRUN AArch32 instructions plus other fixes

* Re-align opcode table

* Re-enable undefined, use subclasses to fix checks

* Add test and fix VRSHR instruction

* PR feedback
2020-03-11 11:49:27 +11:00

29 lines
948 B
C#

namespace ARMeilleure.Decoders
{
class OpCode32SimdRegElem : OpCode32SimdReg
{
public OpCode32SimdRegElem(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
Q = ((opCode >> 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;
}
}
}
}