ryujinx/ARMeilleure/Decoders/OpCode32SimdMemPair.cs
gdkchan 729ff5337c
Fix increment on Arm32 NEON VLDn/VSTn instructions with regs > 1 (#3695)
* Fix increment on Arm32 NEON VLDn/VSTn instructions with regs > 1

* PPTC version bump

* PR feedback
2022-09-13 08:24:09 +02:00

48 lines
1.4 KiB
C#

using ARMeilleure.State;
namespace ARMeilleure.Decoders
{
class OpCode32SimdMemPair : OpCode32, IOpCode32Simd
{
private static int[] _regsMap =
{
1, 1, 4, 2,
1, 1, 3, 1,
1, 1, 2, 1,
1, 1, 1, 1
};
public int Vd { get; }
public int Rn { get; }
public int Rm { get; }
public int Align { get; }
public bool WBack { get; }
public bool RegisterIndex { get; }
public int Size { get; }
public int Elems => 8 >> Size;
public int Regs { get; }
public int Increment { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32SimdMemPair(inst, address, opCode);
public OpCode32SimdMemPair(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
Vd = (opCode >> 12) & 0xf;
Vd |= (opCode >> 18) & 0x10;
Size = (opCode >> 6) & 0x3;
Align = (opCode >> 4) & 0x3;
Rm = (opCode >> 0) & 0xf;
Rn = (opCode >> 16) & 0xf;
WBack = Rm != RegisterAlias.Aarch32Pc;
RegisterIndex = Rm != RegisterAlias.Aarch32Pc && Rm != RegisterAlias.Aarch32Sp;
Regs = _regsMap[(opCode >> 8) & 0xf];
Increment = ((opCode >> 8) & 0x1) + 1;
}
}
}