string bitNames(BitNamesWhich which) {
string bits="";
bool prev = false;
int msb = 0;
// bit==-1 loops below; we do one extra iteration so end with prev=false
for (int bit=(m_flags.size()/FLAGS_PER_BIT)-1; bit >= -1; --bit) {
if (bit>=0
&& ((which == BN_UNUSED && !usedFlag(bit) && drivenFlag(bit))
|| (which == BN_UNDRIVEN && usedFlag(bit) && !drivenFlag(bit))
|| (which == BN_BOTH && !usedFlag(bit) && !drivenFlag(bit)))) {
if (!prev) {
prev=true;
msb = bit;
}
} else if (prev) {
AstBasicDType* bdtypep = m_varp->basicp();
int lsb = bit+1;
if (bits != "") bits += ",";
if (lsb==msb) {
bits += cvtToStr(lsb+bdtypep->lsb());
} else {
if (bdtypep->littleEndian()) {
bits += cvtToStr(lsb+bdtypep->lsb())+":"+cvtToStr(msb+bdtypep->lsb());
} else {
bits += cvtToStr(msb+bdtypep->lsb())+":"+cvtToStr(lsb+bdtypep->lsb());
}
}
prev = false;
}
}
return "["+bits+"]";
}
void addTraceDecl(const VNumRange& arrayRange) {
VNumRange bitRange;
AstBasicDType* bdtypep = m_traValuep->dtypep()->basicp();
if (bdtypep) bitRange = bdtypep->nrange();
AstTraceDecl* declp = new AstTraceDecl(m_traVscp->fileline(), m_traShowname, m_traValuep,
bitRange, arrayRange);
if (m_initSubStmts && v3Global.opt.outputSplitCTrace()
&& m_initSubStmts > v3Global.opt.outputSplitCTrace()) {
m_initSubFuncp = newCFuncSub(m_initFuncp);
m_initSubStmts = 0;
}
m_initSubFuncp->addStmtsp(declp);
m_initSubStmts += EmitCBaseCounterVisitor(declp).count();
m_chgFuncp->addStmtsp(new AstTraceInc(m_traVscp->fileline(), declp, m_traValuep->cloneTree(true)));
// The full version will get constructed in V3Trace
}
void AstTypeTable::dump(ostream& str) {
this->AstNode::dump(str);
for (int i=0; i<(int)(AstBasicDTypeKwd::_ENUM_MAX); ++i) {
if (AstBasicDType* subnodep=m_basicps[i]) {
str<<endl; // Newline from caller, so newline first
str<<"\t\t"<<setw(8)<<AstBasicDTypeKwd(i).ascii();
str<<" -> ";
subnodep->dump(str);
}
}
for (int isbit=0; isbit<2; ++isbit) {
for (int issigned=0; issigned<AstNumeric::_ENUM_MAX; ++issigned) {
LogicMap& mapr = m_logicMap[isbit][issigned];
for (LogicMap::const_iterator it = mapr.begin(); it != mapr.end(); ++it) {
AstBasicDType* dtypep = it->second;
str<<endl; // Newline from caller, so newline first
stringstream nsstr;
nsstr<<(isbit?"bw":"lw")
<<it->first.first<<"/"<<it->first.second;
str<<"\t\t"<<setw(8)<<nsstr.str();
if (issigned) str<<" s"; else str<<" u";
str<<" -> ";
dtypep->dump(str);
}
}
}
{
DetailedMap& mapr = m_detailedMap;
for (DetailedMap::const_iterator it = mapr.begin(); it != mapr.end(); ++it) {
AstBasicDType* dtypep = it->second;
str<<endl; // Newline from caller, so newline first
stringstream nsstr;
str<<"\t\tdetailed -> ";
dtypep->dump(str);
}
}
// Note get newline from caller too.
}
string AstVar::vlEnumType() const {
string arg;
AstBasicDType* bdtypep = basicp();
bool strtype = bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::STRING;
if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::CHARPTR) {
return "VLVT_PTR";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::SCOPEPTR) {
return "VLVT_PTR";
} else if (strtype) {
arg += "VLVT_STRING";
} else if (widthMin() <= 8) {
arg += "VLVT_UINT8";
} else if (widthMin() <= 16) {
arg += "VLVT_UINT16";
} else if (widthMin() <= VL_WORDSIZE) {
arg += "VLVT_UINT32";
} else if (isQuad()) {
arg += "VLVT_UINT64";
} else if (isWide()) {
arg += "VLVT_WDATA";
}
// else return "VLVT_UNKNOWN"
return arg;
}
string AstVar::vlArgType(bool named, bool forReturn, bool forFunc) const {
if (forReturn) named=false;
if (forReturn) v3fatalSrc("verilator internal data is never passed as return, but as first argument");
string arg;
if (isWide() && isInOnly()) arg += "const ";
AstBasicDType* bdtypep = basicp();
bool strtype = bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::STRING;
if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::CHARPTR) {
arg += "const char*";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::SCOPEPTR) {
arg += "const VerilatedScope*";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::DOUBLE) {
arg += "double";
} else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::FLOAT) {
arg += "float";
} else if (strtype) {
if (isInOnly()) arg += "const ";
arg += "string";
} else if (widthMin() <= 8) {
arg += "CData";
} else if (widthMin() <= 16) {
arg += "SData";
} else if (widthMin() <= VL_WORDSIZE) {
arg += "IData";
} else if (isQuad()) {
arg += "QData";
} else if (isWide()) {
arg += "WData"; // []'s added later
}
if (isWide() && !strtype) {
arg += " (& "+name();
arg += ")["+cvtToStr(widthWords())+"]";
} else {
if (forFunc && (isOutput() || (strtype && isInput()))) arg += "&";
if (named) arg += " "+name();
}
return arg;
}
static AstAssignW* pinReconnectSimple(AstPin* pinp, AstCell* cellp, AstNodeModule*,
bool forTristate, bool alwaysCvt) {
// If a pin connection is "simple" leave it as-is
// Else create a intermediate wire to perform the interconnect
// Return the new assignment, if one was made
// Note this module calles cloneTree() via new AstVar
AstVar* pinVarp = pinp->modVarp();
AstVarRef* connectRefp = pinp->exprp()->castVarRef();
AstBasicDType* pinBasicp = pinVarp->dtypep()->basicp(); // Maybe NULL
AstBasicDType* connBasicp = NULL;
AstAssignW* assignp = NULL;
if (connectRefp) connBasicp = connectRefp->varp()->dtypep()->basicp();
//
if (!alwaysCvt
&& connectRefp
&& connectRefp->varp()->dtypep()->sameTree(pinVarp->dtypep())
&& !connectRefp->varp()->isSc()) { // Need the signal as a 'shell' to convert types
// Done. Same data type
} else if (!alwaysCvt
&& connectRefp
&& connectRefp->varp()->isIfaceRef()) {
// Done. Interface
} else if (!alwaysCvt
&& connBasicp
&& pinBasicp
&& connBasicp->width() == pinBasicp->width()
&& connBasicp->lsb() == pinBasicp->lsb()
&& !connectRefp->varp()->isSc() // Need the signal as a 'shell' to convert types
&& connBasicp->width() == pinVarp->width()
&& 1) {
// Done. One to one interconnect won't need a temporary variable.
} else if (!alwaysCvt && !forTristate && pinp->exprp()->castConst()) {
// Done. Constant.
} else {
// Make a new temp wire
//if (1||debug()>=9) { pinp->dumpTree(cout,"-in_pin:"); }
AstNode* pinexprp = pinp->exprp()->unlinkFrBack();
string newvarname = ((string)(pinVarp->isOutput() ? "__Vcellout" : "__Vcellinp")
+(forTristate?"t":"") // Prevent name conflict if both tri & non-tri add signals
+"__"+cellp->name()+"__"+pinp->name());
AstVar* newvarp = new AstVar (pinVarp->fileline(), AstVarType::MODULETEMP, newvarname, pinVarp);
// Important to add statement next to cell, in case there is a generate with same named cell
cellp->addNextHere(newvarp);
if (pinVarp->isInout()) {
pinVarp->v3fatalSrc("Unsupported: Inout connections to pins must be direct one-to-one connection (without any expression)");
} else if (pinVarp->isOutput()) {
// See also V3Inst
AstNode* rhsp = new AstVarRef(pinp->fileline(), newvarp, false);
UINFO(5,"pinRecon width "<<pinVarp->width()<<" >? "<<rhsp->width()<<" >? "<<pinexprp->width()<<endl);
rhsp = extendOrSel (pinp->fileline(), rhsp, pinVarp);
pinp->exprp(new AstVarRef (newvarp->fileline(), newvarp, true));
AstNode* rhsSelp = extendOrSel (pinp->fileline(), rhsp, pinexprp);
assignp = new AstAssignW (pinp->fileline(), pinexprp, rhsSelp);
} else {
// V3 width should have range/extended to make the widths correct
assignp = new AstAssignW (pinp->fileline(),
new AstVarRef(pinp->fileline(), newvarp, true),
pinexprp);
pinp->exprp(new AstVarRef (pinexprp->fileline(), newvarp, false));
}
if (assignp) cellp->addNextHere(assignp);
//if (debug()) { pinp->dumpTree(cout,"- out:"); }
//if (debug()) { assignp->dumpTree(cout,"- aout:"); }
}
return assignp;
}
void V3Inst::pinReconnectSimple(AstPin* pinp, AstCell* cellp, AstNodeModule* modp) {
// If a pin connection is "simple" leave it as-is
// Else create a intermediate wire to perform the interconnect
// Note this module calles cloneTree() via new AstVar
AstVar* pinVarp = pinp->modVarp();
AstVarRef* connectRefp = pinp->exprp()->castVarRef();
AstBasicDType* pinBasicp = pinVarp->dtypep()->basicp(); // Maybe NULL
AstBasicDType* connBasicp = NULL;
if (connectRefp) connBasicp = connectRefp->varp()->dtypep()->basicp();
//
if (connectRefp
&& connectRefp->varp()->dtypep()->sameTree(pinVarp->dtypep())
&& !connectRefp->varp()->isSc()) { // Need the signal as a 'shell' to convert types
// Done. Same data type
} else if (connBasicp
&& pinBasicp
&& connBasicp->width() == pinBasicp->width()
&& connBasicp->lsb() == pinBasicp->lsb()
&& !connectRefp->varp()->isSc() // Need the signal as a 'shell' to convert types
&& pinp->width() == pinVarp->width()
&& 1) {
// Done. One to one interconnect won't need a temporary variable.
} else if (pinp->exprp()->castConst()) {
// Done. Constant.
} else {
// Make a new temp wire
//if (1||debug()>=9) { pinp->dumpTree(cout,"in_pin:"); }
AstAssignW* assignp = NULL;
AstNode* pinexprp = pinp->exprp()->unlinkFrBack();
string newvarname = "__Vcellinp__"+cellp->name()+"__"+pinp->name();
AstVar* newvarp = new AstVar (pinVarp->fileline(), AstVarType::MODULETEMP, newvarname, pinVarp);
modp->addStmtp(newvarp);
if (pinVarp->isInout()) {
pinVarp->v3fatalSrc("Unsupported: Inout connections to pins must be direct one-to-one connection (without any expression)");
} else if (pinVarp->isOutput()) {
// See also V3Inst
AstNode* rhsp = new AstVarRef(pinp->fileline(), newvarp, false);
if (pinp->width() > rhsp->width()) {
if (rhsp->isSigned()) {
rhsp = new AstExtendS(pinp->fileline(), rhsp);
} else {
rhsp = new AstExtend (pinp->fileline(), rhsp);
}
} else if (pinp->width() < rhsp->width()) {
rhsp = new AstSel (pinp->fileline(), rhsp, 0, pinp->width());
}
rhsp->widthSignedFrom(pinp);
assignp = new AstAssignW (pinp->fileline(), pinexprp, rhsp);
pinp->exprp(new AstVarRef (pinexprp->fileline(), newvarp, true));
} else {
// V3 width should have range/extended to make the widths correct
if (pinexprp->width() != pinVarp->width()) pinp->v3fatalSrc("Input pin width mismatch");
assignp = new AstAssignW (pinp->fileline(),
new AstVarRef(pinp->fileline(), newvarp, true),
pinexprp);
pinp->exprp(new AstVarRef (pinexprp->fileline(), newvarp, false));
}
pinp->widthSignedFrom(pinp->exprp());
if (assignp) modp->addStmtp(assignp);
//if (1||debug()) { pinp->dumpTree(cout," out:"); }
//if (1||debug()) { assignp->dumpTree(cout," aout:"); }
}
}