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Support arrayed SystemC I/O pins.

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This commit is contained in:
Wilson Snyder
2012-02-01 20:20:43 -05:00
parent 3429f41489
commit 9df8966f4a
8 changed files with 210 additions and 39 deletions
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src/V3EmitC.cpp
+42 -18
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@@ -872,9 +872,6 @@ void EmitCStmts::emitVarDecl(AstVar* nodep, const string& prefixIfImp) {
if (nodep->isIO()) {
bool isArray = !nodep->dtypeSkipRefp()->castBasicDType();
if (nodep->isSc()) {
if (isArray) {
nodep->v3error("Unsupported: SystemC inputs and outputs must be simple data types; no arrays");
}
m_ctorVarsVec.push_back(nodep);
ofp()->putAlign(nodep->isStatic(), 4); // sc stuff is a structure, so bigger alignment
if (nodep->attrScClocked() && nodep->isInput()) {
@@ -889,6 +886,11 @@ void EmitCStmts::emitVarDecl(AstVar* nodep, const string& prefixIfImp) {
puts(">\t");
}
puts(nodep->name());
if (isArray) {
for (AstArrayDType* arrayp=nodep->dtypeSkipRefp()->castArrayDType(); arrayp; arrayp = arrayp->dtypeSkipRefp()->castArrayDType()) {
puts("["+cvtToStr(arrayp->elementsConst())+"]");
}
}
puts(";\n");
} else { // C++ signals
ofp()->putAlign(nodep->isStatic(), nodep->dtypeSkipRefp()->widthAlignBytes(),
@@ -961,22 +963,29 @@ void EmitCStmts::emitVarDecl(AstVar* nodep, const string& prefixIfImp) {
}
void EmitCStmts::emitVarCtors() {
ofp()->indentInc();
bool first = true;
for (vector<AstVar*>::iterator it = m_ctorVarsVec.begin(); it != m_ctorVarsVec.end(); ++it) {
if (first) {
first=false;
puts("\n");
puts("#if (SYSTEMC_VERSION>20011000)\n"); // SystemC 2.0.1 and newer
puts(" : ");
if (!m_ctorVarsVec.empty()) {
ofp()->indentInc();
puts("\n");
puts("#if (SYSTEMC_VERSION>20011000)\n"); // SystemC 2.0.1 and newer
bool first = true;
for (vector<AstVar*>::iterator it = m_ctorVarsVec.begin(); it != m_ctorVarsVec.end(); ++it) {
AstVar* varp = *it;
bool isArray = !varp->dtypeSkipRefp()->castBasicDType();
if (isArray) {
puts("// Skipping array: ");
puts(varp->name());
puts("\n");
} else {
if (first) { puts(" : "); first=false; }
else puts(", ");
if (ofp()->exceededWidth()) puts("\n ");
puts(varp->name());
puts("("); putsQuoted(varp->name()); puts(")");
}
}
else puts(", ");
if (ofp()->exceededWidth()) puts("\n ");
puts((*it)->name());
puts("("); putsQuoted((*it)->name()); puts(")");
puts ("\n#endif\n");
ofp()->indentDec();
}
if (!first) puts ("\n#endif\n");
ofp()->indentDec();
}
bool EmitCStmts::emitSimpleOk(AstNodeMath* nodep) {
@@ -1500,7 +1509,22 @@ void EmitCImp::emitSensitives() {
for (AstNode* nodep=m_modp->stmtsp(); nodep; nodep = nodep->nextp()) {
if (AstVar* varp = nodep->castVar()) {
if (varp->isInput() && (varp->isScSensitive() || varp->isUsedClock())) {
puts("sensitive << "+varp->name()+";\n");
int vects = 0;
// This isn't very robust and may need cleanup for other data types
for (AstArrayDType* arrayp=varp->dtypeSkipRefp()->castArrayDType(); arrayp;
arrayp = arrayp->dtypeSkipRefp()->castArrayDType()) {
int vecnum = vects++;
if (arrayp->msb() < arrayp->lsb()) varp->v3fatalSrc("Should have swapped msb & lsb earlier.");
string ivar = string("__Vi")+cvtToStr(vecnum);
// MSVC++ pre V7 doesn't support 'for (int ...)', so declare in sep block
puts("{ int __Vi"+cvtToStr(vecnum)+"="+cvtToStr(arrayp->lsb())+";");
puts(" for (; "+ivar+"<="+cvtToStr(arrayp->msb()));
puts("; ++"+ivar+") {\n");
}
puts("sensitive << "+varp->name());
for (int v=0; v<vects; ++v) puts( "[__Vi"+cvtToStr(v)+"]");
puts(";\n");
for (int v=0; v<vects; ++v) puts( "}}\n");
}
}
}