public override void Visit(JumpIfNonZero node)
{
AcpiObject.AcpiObject predicate = thread.Pop().Read();
if (predicate.GetAsInt().Value != 0)
{
Frame.JumpTo(node.ThenTarget - 1); // Minus one because IP will still advance
}
}
public override void Visit(AmlParser.DefWhile defWhile)
{
// We create a sequence like this:
// jump to pushPredicate
// loopback:
// (body instructions)
// pushPredicate:
// (push predicate)
// jump if not zero to loopback
Jump jumpToPushPredicate = new Jump();
JumpIfNonZero jumpLoopBack = new JumpIfNonZero();
result.Add(jumpToPushPredicate);
jumpLoopBack.ThenTarget = result.Count;
VisitSequence(defWhile.termList);
jumpToPushPredicate.Target = result.Count;
defWhile.predicate.Accept(this);
result.Add(jumpLoopBack);
}
public override void Visit(AmlParser.DefIfElse defIfElse)
{
// We create a sequence like this:
// (push predicate)
// jump if nonzero to thenBranch
// (else branch instructions)
// jump to end
// elseBranch:
// (then branch instructions)
// end:
defIfElse.predicate.Accept(this);
JumpIfNonZero thenJump = new JumpIfNonZero();
result.Add(thenJump);
defIfElse.defElse.Accept(this);
Jump jumpOverThenBrach = new Jump();
result.Add(jumpOverThenBrach);
thenJump.ThenTarget = result.Count;
VisitSequence(defIfElse.termList);
jumpOverThenBrach.Target = result.Count;
}
