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https://github.com/verilator/verilator.git
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Version bump
git-svn-id: file://localhost/svn/verilator/trunk/verilator@753 77ca24e4-aefa-0310-84f0-b9a241c72d87
This commit is contained in:
Wilson Snyder
@@ -0,0 +1,228 @@
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// $Id$
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//*************************************************************************
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// DESCRIPTION: Verilator: Emit C++ for tree
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//
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// Code available from: http://www.veripool.com/verilator
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//
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// AUTHORS: Wilson Snyder with Paul Wasson, Duane Gabli
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//
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//*************************************************************************
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//
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// Copyright 2003-2006 by Wilson Snyder. This program is free software; you can
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// redistribute it and/or modify it under the terms of either the GNU
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// General Public License or the Perl Artistic License.
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//
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// Verilator is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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//*************************************************************************
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#include "config.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <math.h>
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#include <map>
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#include <set>
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#include <vector>
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#include <algorithm>
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#include "V3Global.h"
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#include "V3EmitC.h"
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#include "V3EmitCBase.h"
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#include "V3LanguageWords.h"
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//######################################################################
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// Symbol table emitting
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class EmitCSyms : EmitCBaseVisitor {
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// STATE
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AstModule* m_modp; // Current module
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typedef pair<AstScope*,AstModule*> ScopeModPair;
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vector<ScopeModPair> m_scopes; // Every scope by module
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V3LanguageWords m_words; // Reserved word detector
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// METHODS
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void emitInt();
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void emitImp();
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struct CmpName {
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inline bool operator () (const ScopeModPair& lhsp, const ScopeModPair& rhsp) const {
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return lhsp.first->name() < rhsp.first->name();
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}
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};
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void nameCheck(AstNode* nodep) {
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// Prevent GCC compile time error; name check all things that reach C++ code
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if (nodep->name() != "") {
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string rsvd = m_words.isKeyword(nodep->name());
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if (rsvd != "") {
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nodep->v3error("Unsupported: "+rsvd+": "<<nodep->name());
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}
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}
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}
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// VISITORS
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virtual void visit(AstNetlist* nodep, AstNUser*) {
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// Collect list of scopes
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nodep->iterateChildren(*this);
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// Sort m_scopes by scope name
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sort(m_scopes.begin(), m_scopes.end(), CmpName());
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// Output
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emitInt();
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emitImp();
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}
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virtual void visit(AstModule* nodep, AstNUser*) {
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nameCheck(nodep);
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m_modp = nodep;
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nodep->iterateChildren(*this);
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}
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virtual void visit(AstScope* nodep, AstNUser*) {
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nameCheck(nodep);
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m_scopes.push_back(make_pair(nodep, m_modp));
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}
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// NOPs
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virtual void visit(AstNodeStmt*, AstNUser*) {}
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virtual void visit(AstConst*, AstNUser*) {}
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// Default
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virtual void visit(AstNode* nodep, AstNUser*) {
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nameCheck(nodep);
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nodep->iterateChildren(*this);
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}
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//---------------------------------------
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// ACCESSORS
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public:
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EmitCSyms(AstNetlist* nodep) {
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m_modp = NULL;
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nodep->accept(*this);
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}
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};
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void EmitCSyms::emitInt() {
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string filename = v3Global.opt.makeDir()+"/"+symClassName()+".h";
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newCFile(filename, true/*slow*/, false/*source*/);
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V3OutCFile hf (filename);
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m_ofp = &hf;
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ofp()->putsHeader();
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puts("#ifndef _"+symClassName()+"_H_\n");
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puts("#define _"+symClassName()+"_H_\n");
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puts("\n");
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// for
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puts("\n// INCLUDE MODULE CLASSES\n");
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for (AstModule* nodep = v3Global.rootp()->modulesp(); nodep; nodep=nodep->nextp()->castModule()) {
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puts("#include \""+modClassName(nodep)+".h\"\n");
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}
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puts("\n// SYMS CLASS\n");
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puts((string)"class "+symClassName()+" {\n");
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puts("public:\n");
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puts("// STATIC STATE\n");
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puts("static "+symClassName()+"* s_thisp;\n");
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puts("\n// STATE\n");
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for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
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AstScope* scopep = it->first; AstModule* modp = it->second;
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if (modp->isTop()) {
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ofp()->printf("%-30s ", (modClassName(modp)+"*").c_str());
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puts(scopep->nameDotless()+"p;\n");
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}
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else {
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ofp()->printf("%-30s ", (modClassName(modp)+"").c_str());
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puts(scopep->nameDotless()+";\n");
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}
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}
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puts("\n// CREATORS\n");
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puts(symClassName()+"("+topClassName()+"* topp);\n");
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puts((string)"~"+symClassName()+"() {};\n");
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puts("// METHODS\n");
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puts("/// Called at top of each eval to setup global pointer to top-of-symbol table\n");
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puts((string)"inline static void init ("+symClassName()+"* symsp) {\n");
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puts("s_thisp = symsp;\n");
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puts("}\n");
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puts((string)"inline static void init ("+topClassName()+"* topp) {\n");
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puts("s_thisp = topp->__VlSymsp;\n");
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puts("}\n");
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puts("\n");
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puts("};\n");
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puts("#endif /*guard*/\n");
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}
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void EmitCSyms::emitImp() {
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string filename = v3Global.opt.makeDir()+"/"+symClassName()+".cpp";
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AstCFile* cfilep = newCFile(filename, true/*slow*/, true/*source*/);
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cfilep->support(true);
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V3OutCFile cf (filename);
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m_ofp = &cf;
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ofp()->putsHeader();
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puts("\n");
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// Includes
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puts("#include \""+symClassName()+".h\"\n");
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for (AstModule* nodep = v3Global.rootp()->modulesp(); nodep; nodep=nodep->nextp()->castModule()) {
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puts("#include \""+modClassName(nodep)+".h\"\n");
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}
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puts("\n// GLOBALS\n");
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puts(symClassName()+"* "+symClassName()+"::s_thisp;\n");
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puts("\n// FUNCTIONS\n");
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puts(symClassName()+"::"+symClassName()+"("+topClassName()+"* topp)\n");
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puts("\t// Setup submodule names\n");
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char comma=':';
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for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
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AstScope* scopep = it->first; AstModule* modp = it->second;
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if (modp->isTop()) {
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} else {
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string arrow = scopep->name();
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if (arrow.substr(0,4) == "TOP.") arrow.replace(0,4,".");
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ofp()->printf("\t%c %-30s ", comma, scopep->nameDotless().c_str());
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puts("(Verilated::catName(topp->name(),\"");
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puts(arrow);
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puts("\"))\n");
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comma=',';
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}
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}
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puts("{\n");
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puts("// Pointer to top level\n");
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puts("TOPp = topp;\n");
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puts("// Setup each module's pointers to their submodules\n");
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for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
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AstScope* scopep = it->first; AstModule* modp = it->second;
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if (!modp->isTop()) {
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string arrow = scopep->name();
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string::size_type pos;
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while ((pos=arrow.find(".")) != string::npos) {
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arrow.replace(pos, 1, "->");
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}
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if (arrow.substr(0,5) == "TOP->") arrow.replace(0,5,"TOPp->");
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ofp()->printf("%-30s ", arrow.c_str());
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puts(" = &");
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puts(scopep->nameDotless()+";\n");
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}
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}
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puts("// Setup each module's pointer back to symbol table (for public functions)\n");
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puts("TOPp->__VlSymsp = this;\n");
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for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
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AstScope* scopep = it->first; AstModule* modp = it->second;
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if (!modp->isTop()) {
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puts(scopep->nameDotless()+".__Vconfigure(this);\n");
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}
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}
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puts("}\n");
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puts("\n");
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}
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//######################################################################
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// EmitC class functions
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void V3EmitC::emitcSyms() {
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UINFO(2,__FUNCTION__<<": "<<endl);
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EmitCSyms syms (v3Global.rootp());
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}
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