private void RewriteCLRWDT()
{
byte mask;
PICRegisterBitFieldStorage pd = PICRegisters.PD;
PICRegisterBitFieldStorage to = PICRegisters.TO;
Identifier pdreg = binder.EnsureRegister(pd.FlagRegister);
Identifier toreg = binder.EnsureRegister(to.FlagRegister);
if (ReferenceEquals(pdreg, toreg) && pdreg != null)
{
mask = (byte)((1 << pd.BitPos) | (1 << to.BitPos));
m.Assign(pdreg, m.Or(pdreg, Constant.Byte(mask)));
return;
}
if (pdreg != null)
{
mask = (byte)((1 << pd.BitPos));
m.Assign(pdreg, m.Or(pdreg, Constant.Byte(mask)));
}
if (toreg != null)
{
mask = (byte)((1 << to.BitPos));
m.Assign(pdreg, m.Or(pdreg, Constant.Byte(mask)));
}
}
/// <summary>
/// Sets core registers common to all PIC16.
/// </summary>
protected override void SetCoreRegisters()
{
base.SetCoreRegisters();
INTCON = GetRegister("INTCON");
GIE = GetBitField("GIE");
}
private void RewriteSLEEP()
{
byte mask;
PICRegisterBitFieldStorage pd = PICRegisters.PD;
PICRegisterBitFieldStorage to = PICRegisters.TO;
Identifier pdreg = binder.EnsureRegister(pd.FlagRegister);
Identifier toreg = binder.EnsureRegister(to.FlagRegister);
if (ReferenceEquals(pdreg, toreg) && pdreg != null)
{
mask = (byte)(~(1 << pd.BitPos));
m.Assign(pdreg, m.And(pdreg, Constant.Byte(mask)));
mask = (byte)(1 << to.BitPos);
m.Assign(pdreg, m.Or(pdreg, Constant.Byte(mask)));
return;
}
if (pd != null)
{
m.Assign(pdreg, m.Dpb(pdreg, Constant.False(), pd.BitPos));
}
if (to != null)
{
m.Assign(toreg, m.Dpb(toreg, Constant.True(), to.BitPos));
}
}
private void Rewrite_RETFIE()
{
PICRegisterBitFieldStorage gie = PIC16Registers.GIE;
byte mask = (byte)(1 << gie.BitPos);
var intcon = binder.EnsureRegister(PIC16Registers.INTCON);
m.Assign(intcon, m.Or(intcon, Constant.Byte(mask)));
PopFromHWStackAccess();
m.Return(0, 0);
}
private void Rewrite_CLRWDT()
{
byte mask;
PICRegisterBitFieldStorage pd = PICRegisters.PD;
PICRegisterBitFieldStorage to = PICRegisters.TO;
var status = binder.EnsureRegister(PICRegisters.STATUS);
mask = (byte)((1 << pd.BitPos) | (1 << to.BitPos));
m.Assign(status, m.Or(status, Constant.Byte(mask)));
}
