private static void EmitIadd(
EmitterContext context,
Operand srcA,
Operand srcB,
int rd,
AvgMode avgMode,
bool extended,
bool writeCC)
{
srcA = context.INegate(srcA, avgMode == AvgMode.NegA);
srcB = context.INegate(srcB, avgMode == AvgMode.NegB);
Operand res = context.IAdd(srcA, srcB);
if (extended)
{
res = context.IAdd(res, context.BitwiseAnd(GetCF(), Const(1)));
}
SetIaddFlags(context, res, srcA, srcB, writeCC, extended);
// TODO: SAT.
context.Copy(GetDest(rd), res);
}
private static void EmitImad(
EmitterContext context,
Operand srcA,
Operand srcB,
Operand srcC,
int rd,
AvgMode avgMode,
bool signedA,
bool signedB,
bool high)
{
srcB = context.INegate(srcB, avgMode == AvgMode.NegA);
srcC = context.INegate(srcC, avgMode == AvgMode.NegB);
Operand res;
if (high)
{
if (signedA && signedB)
{
res = context.MultiplyHighS32(srcA, srcB);
}
else
{
res = context.MultiplyHighU32(srcA, srcB);
if (signedA)
{
res = context.IAdd(res, context.IMultiply(srcB, context.ShiftRightS32(srcA, Const(31))));
}
else if (signedB)
{
res = context.IAdd(res, context.IMultiply(srcA, context.ShiftRightS32(srcB, Const(31))));
}
}
}
else
{
res = context.IMultiply(srcA, srcB);
}
if (srcC.Type != OperandType.Constant || srcC.Value != 0)
{
res = context.IAdd(res, srcC);
}
// TODO: CC, X, SAT, and more?
context.Copy(GetDest(rd), res);
}
private static void EmitIscadd(
EmitterContext context,
Operand srcA,
Operand srcB,
int rd,
int shift,
AvgMode avgMode,
bool writeCC)
{
srcA = context.ShiftLeft(srcA, Const(shift));
srcA = context.INegate(srcA, avgMode == AvgMode.NegA);
srcB = context.INegate(srcB, avgMode == AvgMode.NegB);
Operand res = context.IAdd(srcA, srcB);
SetIaddFlags(context, res, srcA, srcB, writeCC, false);
context.Copy(GetDest(rd), res);
}
