rjx-mirror/ARMeilleure/Decoders/OpCode32MemMult.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

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1.4 KiB
C#

namespace ARMeilleure.Decoders
{
class OpCode32MemMult : OpCode32, IOpCode32MemMult
{
public int Rn { get; }
public int RegisterMask { get; }
public int Offset { get; }
public int PostOffset { get; }
public bool IsLoad { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode32MemMult(inst, address, opCode);
public OpCode32MemMult(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
Rn = (opCode >> 16) & 0xf;
bool isLoad = (opCode & (1 << 20)) != 0;
bool w = (opCode & (1 << 21)) != 0;
bool u = (opCode & (1 << 23)) != 0;
bool p = (opCode & (1 << 24)) != 0;
RegisterMask = opCode & 0xffff;
int regsSize = 0;
for (int index = 0; index < 16; index++)
{
regsSize += (RegisterMask >> index) & 1;
}
regsSize *= 4;
if (!u)
{
Offset -= regsSize;
}
if (u == p)
{
Offset += 4;
}
if (w)
{
PostOffset = u ? regsSize : -regsSize;
}
else
{
PostOffset = 0;
}
IsLoad = isLoad;
}
}
}