virtual void visit(AstPin* nodep, AstNUser*) {
// Check to see if any output pins have __en pins and create the __en pins to match
AstVarRef* refp = findVarRef(nodep);
if (refp && refp->lvalue() && nodep->modVarp()->user1p()) {
AstVar* enchildp = (AstVar*)nodep->modVarp()->user1p();
UINFO(9, " Pulling __en var" << enchildp << endl);
AstVar* enp = new AstVar(enchildp->fileline(),
AstVarType::OUTPUT,
enchildp->name()+cvtToStr(m_unique++),
enchildp);
enp->user2(enchildp->user2());
m_modp->addStmtp(enp);
AstPin* pinp = new AstPin(nodep->fileline(),
nodep->pinNum(),
enp->name(),
new AstVarRef(nodep->fileline(), enp, true));
AstVarRef *rp = findVarRef(pinp);
rp->replaceWith(new AstVarRef(nodep->fileline(), enp, true));
rp->deleteTree(); rp=NULL;
pinp->width(enp->width(),enp->width()); // minwidth==width
pinp->modVarp(enchildp);
m_cellp->addPinsp(pinp);
refp->user1p(enp);
refp->varp()->user1p(enp);
}
// Simplify interconnect in preperation for V3Inst
// (This could be a separate visitor, but we're in the neighborhood)
V3Inst::pinReconnectSimple(nodep, m_cellp, m_modp);
}
void V3LinkLevel::wrapTopCell(AstNetlist* netlistp) {
AstNodeModule* newmodp = netlistp->modulesp();
if (!newmodp || !newmodp->isTop()) netlistp->v3fatalSrc("No TOP module found to process");
AstNodeModule* oldmodp = newmodp->nextp()->castNodeModule();
if (!oldmodp) netlistp->v3fatalSrc("No module found to process");
// Add instance
AstCell* cellp = new AstCell(newmodp->fileline(),
((v3Global.opt.l2Name()!="") ? v3Global.opt.l2Name() : oldmodp->name()),
oldmodp->name(),
NULL, NULL, NULL);
cellp->modp(oldmodp);
newmodp->addStmtp(cellp);
// Add pins
for (AstNode* subnodep=oldmodp->stmtsp(); subnodep; subnodep = subnodep->nextp()) {
if (AstVar* oldvarp=subnodep->castVar()) {
UINFO(8,"VARWRAP "<<oldvarp<<endl);
if (oldvarp->isIO()) {
AstVar* varp = oldvarp->cloneTree(false);
newmodp->addStmtp(varp);
varp->sigPublic(true); // User needs to be able to get to it...
if (oldvarp->isIO()) {
oldvarp->primaryIO(true);
varp->primaryIO(true);
}
if (varp->isIO() && v3Global.opt.systemC()) {
varp->sc(true);
// User can see trace one level down from the wrapper
// Avoids packing & unpacking SC signals a second time
varp->trace(false);
}
AstPin* pinp = new AstPin(oldvarp->fileline(),0,oldvarp->name(),
new AstVarRef(varp->fileline(),
varp, oldvarp->isOutput()));
// Skip length and width comp; we know it's a direct assignment
pinp->modVarp(oldvarp);
cellp->addPinsp(pinp);
}
}
}
}
virtual void visit(AstPin* nodep, AstNUser*) {
if (m_state == CONVERT_PINS) {
if (nodep->modVarp()->user1p()) {
// create the input pin
AstVarRef* refp = nodep->exprp()->castVarRef();
if (!refp) nodep->v3fatal("Unsupported: Tristate pin not connected to simple net");
AstVar* inp;
if (refp->varp()->user1p()) { // this is a tristate
inp = (AstVar*) refp->varp()->user1p();
} else {
inp = refp->varp();
}
AstPin* pinp = new AstPin(nodep->fileline(),
nodep->pinNum(),
nodep->name() + "__in",
new AstVarRef(nodep->fileline(), inp, false));
m_cellp->addPinsp(pinp);
// now link it
pinp->modVarp((AstVar*) nodep->modVarp()->user1p());
}
}
}
