public IEnumerable <IXILMapping> TryMap(ITransactionSite taSite, XILInstr instr, TypeDescriptor[] operandTypes, TypeDescriptor[] resultTypes)
{
var fu = taSite.Host;
Shifter shifter = fu as Shifter;
if (shifter == null)
{
yield break;
}
if (instr.Name != InstructionCodes.LShift &&
instr.Name != InstructionCodes.RShift)
{
yield break;
}
int fmtData = GetFixSize(operandTypes[0]);
int fmtShift = GetFixSize(operandTypes[1]);
int fmtResult = GetFixSize(resultTypes[0]);
if (fmtData < 0 || fmtShift < 0 || fmtResult < 0)
{
yield break;
}
if (fmtData != fmtResult)
{
yield break;
}
if (shifter.DataWidth != fmtData ||
shifter.ShiftWidth != fmtShift)
{
yield break;
}
switch (instr.Name)
{
case InstructionCodes.LShift:
yield return(new LShiftXILMapping(shifter));
break;
case InstructionCodes.RShift:
yield return(new RShiftXILMapping(shifter));
break;
default:
throw new NotImplementedException();
}
}
public IXILMapping TryAllocate(Component host, XILInstr instr, TypeDescriptor[] operandTypes, TypeDescriptor[] resultTypes, IProject proj)
{
if (instr.Name != InstructionCodes.LShift &&
instr.Name != InstructionCodes.RShift)
{
return(null);
}
int fmtData = GetFixSize(operandTypes[0]);
int fmtShift = GetFixSize(operandTypes[1]);
int fmtResult = GetFixSize(resultTypes[0]);
if (fmtData < 0 || fmtShift < 0 || fmtResult < 0)
{
return(null);
}
if (!fmtData.Equals(fmtResult))
{
return(null);
}
if (fmtShift != MathExt.CeilLog2(fmtData))
{
return(null);
}
Shifter shifter = new Shifter(fmtData, 1);
switch (instr.Name)
{
case InstructionCodes.LShift:
return(new LShiftXILMapping(shifter));
case InstructionCodes.RShift:
return(new RShiftXILMapping(shifter));
default:
throw new NotImplementedException();
}
}
public ShifterTransactor(Shifter host) :
base(host)
{
_host = host;
}
public RShiftXILMapping(Shifter host) :
base(host.TASite, EMappingKind.ReplicatableResource)
{
_host = host;
}
public ShifterTransactor(Shifter host):
base(host)
{
_host = host;
}
public IXILMapping TryAllocate(Component host, XILInstr instr, TypeDescriptor[] operandTypes, TypeDescriptor[] resultTypes, IProject proj)
{
if (instr.Name != InstructionCodes.LShift &&
instr.Name != InstructionCodes.RShift)
return null;
int fmtData = GetFixSize(operandTypes[0]);
int fmtShift = GetFixSize(operandTypes[1]);
int fmtResult = GetFixSize(resultTypes[0]);
if (fmtData < 0 || fmtShift < 0 || fmtResult < 0)
return null;
if (!fmtData.Equals(fmtResult))
return null;
if (fmtShift != MathExt.CeilLog2(fmtData))
return null;
Shifter shifter = new Shifter(fmtData, 1);
switch (instr.Name)
{
case InstructionCodes.LShift:
return new LShiftXILMapping(shifter);
case InstructionCodes.RShift:
return new RShiftXILMapping(shifter);
default:
throw new NotImplementedException();
}
}
public RShiftXILMapping(Shifter host) :
base(host.TASite, EMappingKind.ReplicatableResource)
{
_host = host;
}