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A32: Implement VCVTT, VCVTB (#3710)

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* A32: Implement VCVTT, VCVTB

* A32: F16C implementation of VCVTT/VCVTB
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merry 2022-10-19 01:36:04 +01:00 • committed by GitHub
parent 5af8ce7c38
commit 8d41402fa6
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44
ARMeilleure/Decoders/OpCode32SimdCvtTB.cs Normal file
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namespace ARMeilleure.Decoders
{
class OpCode32SimdCvtTB : OpCode32, IOpCode32Simd
{
public int Vd { get; }
public int Vm { get; }
public bool Op { get; } // Convert to Half / Convert from Half
public bool T { get; } // Top / Bottom
public int Size { get; } // Double / Single
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdCvtTB(inst, address, opCode, false);
public static OpCode CreateT32(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdCvtTB(inst, address, opCode, true);
public OpCode32SimdCvtTB(InstDescriptor inst, ulong address, int opCode, bool isThumb) : base(inst, address, opCode)
{
IsThumb = isThumb;
Op = ((opCode >> 16) & 0x1) != 0;
T = ((opCode >> 7) & 0x1) != 0;
Size = ((opCode >> 8) & 0x1);
RegisterSize = Size == 1 ? RegisterSize.Int64 : RegisterSize.Int32;
if (Size == 1)
{
if (Op)
{
Vm = ((opCode >> 1) & 0x10) | ((opCode >> 0) & 0xf);
Vd = ((opCode >> 22) & 0x1) | ((opCode >> 11) & 0x1e);
}
else
{
Vm = ((opCode >> 5) & 0x1) | ((opCode << 1) & 0x1e);
Vd = ((opCode >> 18) & 0x10) | ((opCode >> 12) & 0xf);
}
}
else
{
Vm = ((opCode >> 5) & 0x1) | ((opCode << 1) & 0x1e);
Vd = ((opCode >> 22) & 0x1) | ((opCode >> 11) & 0x1e);
}
}
}
}