Logo Search packages:      
Sourcecode: verilator version File versions  Download package

V3EmitCSyms.cpp

//*************************************************************************
// DESCRIPTION: Verilator: Emit C++ for tree
//
// Code available from: http://www.veripool.org/verilator
//
// AUTHORS: Wilson Snyder with Paul Wasson, Duane Gabli
//
//*************************************************************************
//
// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
// redistribute it and/or modify it under the terms of either the GNU
// Lesser General Public License Version 3 or the Perl Artistic License
// Version 2.0.
//
// Verilator is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
//*************************************************************************

#include "config_build.h"
#include "verilatedos.h"
#include <cstdio>
#include <cstdarg>
#include <unistd.h>
#include <cmath>
#include <map>
#include <set>
#include <vector>
#include <algorithm>

#include "V3Global.h"
#include "V3EmitC.h"
#include "V3EmitCBase.h"
#include "V3LanguageWords.h"

//######################################################################
// Symbol table emitting

class EmitCSyms : EmitCBaseVisitor {
    // NODE STATE
    // Cleared on Netlist
    //  AstNodeModule::user1()      -> bool.  Set true __Vconfigure called
    AstUser1InUse m_inuser1;

    // TYPES
    struct ScopeNameData { string m_symName; string m_prettyName;
      ScopeNameData(const string& symName, const string& prettyName)
          : m_symName(symName), m_prettyName(prettyName) {}
    };
    struct ScopeFuncData { AstScopeName* m_scopep; AstCFunc* m_funcp; AstNodeModule* m_modp;
      ScopeFuncData(AstScopeName* scopep, AstCFunc* funcp, AstNodeModule* modp)
          : m_scopep(scopep), m_funcp(funcp), m_modp(modp) {}
    };
    struct ScopeVarData { string m_scopeName; string m_varBasePretty; AstVar* m_varp;
      AstNodeModule* m_modp;  AstScope* m_scopep;
      ScopeVarData(const string& scopeName, const string& varBasePretty, AstVar* varp, AstNodeModule* modp, AstScope* scopep)
          : m_scopeName(scopeName), m_varBasePretty(varBasePretty), m_varp(varp), m_modp(modp), m_scopep(scopep) {}
    };
    typedef map<string,ScopeFuncData> ScopeFuncs;
    typedef map<string,ScopeVarData> ScopeVars;
    typedef map<string,ScopeNameData> ScopeNames;
    typedef pair<AstScope*,AstNodeModule*> ScopeModPair;
    typedef pair<AstNodeModule*,AstVar*> ModVarPair;
    struct CmpName {
      inline bool operator () (const ScopeModPair& lhsp, const ScopeModPair& rhsp) const {
          return lhsp.first->name() < rhsp.first->name();
      }
    };
    struct CmpDpi {
      inline bool operator () (const AstCFunc* lhsp, const AstCFunc* rhsp) const {
          if (lhsp->dpiImport() != rhsp->dpiImport()) {
            return lhsp->dpiImport() < rhsp->dpiImport();
          }
          return lhsp->name() < rhsp->name();
      }
    };

    // STATE
    AstCFunc*           m_funcp;    // Current function
    AstNodeModule*      m_modp;           // Current module
    vector<ScopeModPair>  m_scopes; // Every scope by module
    vector<AstCFunc*>   m_dpis;           // DPI functions
    vector<ModVarPair>  m_modVars;  // Each public {mod,var}
    ScopeNames          m_scopeNames;     // Each unique AstScopeName
    ScopeFuncs          m_scopeFuncs;     // Each {scope,dpi-export-func}
    ScopeVars           m_scopeVars;      // Each {scope,public-var}
    V3LanguageWords     m_words;    // Reserved word detector
    int           m_coverBins;            // Coverage bin number
    int           m_labelNum;       // Next label number

    // METHODS
    void emitSymHdr();
    void emitSymImp();
    void emitDpiHdr();
    void emitDpiImp();

    void nameCheck(AstNode* nodep) {
      // Prevent GCC compile time error; name check all things that reach C++ code
      if (nodep->name() != "") {
          string rsvd = m_words.isKeyword(nodep->name());
          if (rsvd != "") {
            // Generally V3Name should find all of these and throw SYMRSVDWORD.
            // We'll still check here because the compiler errors resulting if we miss this warning are SO nasty
            nodep->v3error("Symbol matching "+rsvd+" reserved word reached emitter, should have hit SYMRSVDWORD: '"<<nodep->name()<<"'");
          }
      }
    }

    void varsExpand() {
      // We didn'e have all m_scopes loaded when we encountered variables, so expand them now
      // It would be less code if each module inserted its own variables.
      // Someday.  For now public isn't common.
      for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
          AstScope* scopep = it->first;  AstNodeModule* smodp = it->second;
          for (vector<ModVarPair>::iterator it = m_modVars.begin(); it != m_modVars.end(); ++it) {
            AstNodeModule* modp = it->first;
            if (modp == smodp) {
                AstVar* varp = it->second;
                // Need to split the module + var name into the original-ish full scope and variable name under that scope.
                // The module instance name is included later, when we know the scopes this module is under
                string whole = scopep->name()+"__DOT__"+varp->name();
                string scpName;
                string varBase;
                if (whole.substr(0,10) == "__DOT__TOP") whole.replace(0,10,"");
                string::size_type pos = whole.rfind("__DOT__");
                if (pos != string::npos) {
                  scpName = whole.substr(0,pos);
                  varBase = whole.substr(pos+strlen("__DOT__"));
                } else {
                  varBase = whole;
                }
                //UINFO(9,"For "<<scopep->name()<<" - "<<varp->name()<<"  Scp "<<scpName<<"  Var "<<varBase<<endl);
                string varBasePretty = AstNode::prettyName(varBase);
                string scpPretty = AstNode::prettyName(scpName);
                string scpSym;
                {
                  string out = scpName;
                  string::size_type pos;
                  while ((pos=out.find("__PVT__")) != string::npos) {
                      out.replace(pos, 7, "");
                  }
                  if (out.substr(0,10) == "TOP__DOT__") out.replace(0,10,"");
                  if (out.substr(0,4) == "TOP.") out.replace(0,4,"");
                  while ((pos=out.find(".")) != string::npos) {
                      out.replace(pos, 1, "__");
                  }
                  while ((pos=out.find("__DOT__")) != string::npos) {
                      out.replace(pos, 7, "__");
                  }
                  scpSym = out;
                }
                //UINFO(9," scnameins sp "<<scpName<<" sp "<<scpPretty<<" ss "<<scpSym<<endl);
                if (m_scopeNames.find(scpSym) == m_scopeNames.end()) {
                  m_scopeNames.insert(make_pair(scpSym, ScopeNameData(scpSym, scpPretty)));
                }
                m_scopeVars.insert(make_pair(scpSym + " " + varp->name(),
                                     ScopeVarData(scpSym, varBasePretty, varp, modp, scopep)));
            }
          }
      }
    }

    // VISITORS
    virtual void visit(AstNetlist* nodep, AstNUser*) {
      // Collect list of scopes
      nodep->iterateChildren(*this);
      varsExpand();

      // Sort by names, so line/process order matters less
      sort(m_scopes.begin(), m_scopes.end(), CmpName());
      sort(m_dpis.begin(), m_dpis.end(), CmpDpi());

      // Output
      emitSymHdr();
      emitSymImp();
      if (v3Global.dpi()) {
          emitDpiHdr();
          emitDpiImp();
      }
    }
    virtual void visit(AstNodeModule* nodep, AstNUser*) {
      nameCheck(nodep);
      m_modp = nodep;
      m_labelNum = 0;
      nodep->iterateChildren(*this);
      m_modp = NULL;
    }
    virtual void visit(AstScope* nodep, AstNUser*) {
      nameCheck(nodep);
      m_scopes.push_back(make_pair(nodep, m_modp));
    }
    virtual void visit(AstScopeName* nodep, AstNUser*) {
      string name = nodep->scopeSymName();
      //UINFO(9,"scnameins sp "<<nodep->name()<<" sp "<<nodep->scopePrettyName()<<" ss "<<name<<endl);
      if (m_scopeNames.find(name) == m_scopeNames.end()) {
          m_scopeNames.insert(make_pair(name, ScopeNameData(name, nodep->scopePrettyName())));
      }
      if (nodep->dpiExport()) {
          if (!m_funcp) nodep->v3fatalSrc("ScopeName not under DPI function");
          m_scopeFuncs.insert(make_pair(name + " " + m_funcp->name(),
                                ScopeFuncData(nodep, m_funcp, m_modp)));
      }
    }
    virtual void visit(AstVar* nodep, AstNUser*) {
      nodep->iterateChildren(*this);
      if (nodep->isSigUserRdPublic()) {
          m_modVars.push_back(make_pair(m_modp, nodep));
      }
    }
    virtual void visit(AstCoverDecl* nodep, AstNUser*) {
      // Assign numbers to all bins, so we know how big of an array to use
      if (!nodep->dataDeclNullp()) {  // else duplicate we don't need code for
          nodep->binNum(m_coverBins++);
      }
    }
    virtual void visit(AstJumpLabel* nodep, AstNUser*) {
      nodep->labelNum(++m_labelNum);
      nodep->iterateChildren(*this);
    }
    virtual void visit(AstCFunc* nodep, AstNUser*) {
      if (nodep->dpiImport() || nodep->dpiExportWrapper()) {
          m_dpis.push_back(nodep);
      }
      m_funcp = nodep;
      nodep->iterateChildren(*this);
      m_funcp = NULL;
    }
    // NOPs
    virtual void visit(AstConst*, AstNUser*) {}
    // Default
    virtual void visit(AstNode* nodep, AstNUser*) {
      nameCheck(nodep);
      nodep->iterateChildren(*this);
    }
    //---------------------------------------
    // ACCESSORS
public:
    EmitCSyms(AstNetlist* nodep) {
      m_funcp = NULL;
      m_modp = NULL;
      m_coverBins = 0;
      m_labelNum = 0;
      nodep->accept(*this);
    }
};

void EmitCSyms::emitSymHdr() {
    UINFO(6,__FUNCTION__<<": "<<endl);
    string filename = v3Global.opt.makeDir()+"/"+symClassName()+".h";
    newCFile(filename, true/*slow*/, false/*source*/);
    V3OutCFile hf (filename);
    m_ofp = &hf;

    ofp()->putsHeader();
    puts("// DESCR" "IPTION: Verilator output: Symbol table internal header\n");
    puts("//\n");
    puts("// Internal details; most calling programs do not need this header\n");
    puts("\n");

    puts("#ifndef _"+symClassName()+"_H_\n");
    puts("#define _"+symClassName()+"_H_\n");
    puts("\n");

    if (optSystemPerl()) puts("#include \"systemperl.h\"\n");
    else if (optSystemC()) puts("#include \"systemc.h\"\n");

    if (optSystemPerl() || optSystemC()) {
      puts("#include \"verilated_sc.h\"\n");
    }
    if (v3Global.needHeavy()) {
      puts("#include \"verilated_heavy.h\"\n");
    } else {
      puts("#include \"verilated.h\"\n");
    }

    // for
    puts("\n// INCLUDE MODULE CLASSES\n");
    for (AstNodeModule* nodep = v3Global.rootp()->modulesp(); nodep; nodep=nodep->nextp()->castNodeModule()) {
      puts("#include \""+modClassName(nodep)+".h\"\n");
    }

    if (v3Global.dpi()) {
      puts ("\n// DPI TYPES for DPI Export callbacks (Internal use)\n");
      map<string,int> types;  // Remove duplicates and sort
      for (ScopeFuncs::iterator it = m_scopeFuncs.begin(); it != m_scopeFuncs.end(); ++it) {
          AstCFunc* funcp = it->second.m_funcp;
          if (funcp->dpiExport()) {
            string cbtype = v3Global.opt.prefix()+"__Vcb_"+funcp->cname()+"_t";
            types["typedef void (*"+cbtype+") ("+cFuncArgs(funcp)+");\n"] = 1;
          }
      }
      for (map<string,int>::iterator it = types.begin(); it != types.end(); ++it) {
          puts(it->first);
      }
    }

    puts("\n// SYMS CLASS\n");
    puts((string)"class "+symClassName()+" : public VerilatedSyms {\n");
    ofp()->putsPrivate(false);  // public:

    puts("\n// LOCAL STATE\n");
    ofp()->putAlign(V3OutFile::AL_AUTO, sizeof(vluint64_t));
    puts("const char* __Vm_namep;\n");    // Must be before subcells, as constructor order needed before _vlCoverInsert.
    ofp()->putAlign(V3OutFile::AL_AUTO, sizeof(bool));
    puts("bool\t__Vm_activity;\t\t///< Used by trace routines to determine change occurred\n");
    ofp()->putAlign(V3OutFile::AL_AUTO, sizeof(bool));
    puts("bool\t__Vm_didInit;\n");

    ofp()->putAlign(V3OutFile::AL_AUTO, sizeof(vluint64_t));
    puts("\n// SUBCELL STATE\n");
    for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
      AstScope* scopep = it->first;  AstNodeModule* modp = it->second;
      if (modp->isTop()) {
          ofp()->printf("%-30s ", (modClassName(modp)+"*").c_str());
          puts(scopep->nameDotless()+"p;\n");
      }
      else {
          ofp()->printf("%-30s ", (modClassName(modp)+"").c_str());
          puts(scopep->nameDotless()+";\n");
      }
    }

    puts("\n// COVERAGE\n");
    if (m_coverBins) {
      ofp()->putAlign(V3OutFile::AL_AUTO, sizeof(uint32_t));
      puts("uint32_t\t__Vcoverage["); puts(cvtToStr(m_coverBins)); puts("];\n");
    }

    puts("\n// SCOPE NAMES\n");
    for (ScopeNames::iterator it = m_scopeNames.begin(); it != m_scopeNames.end(); ++it) {
      puts("VerilatedScope __Vscope_"+it->second.m_symName+";\n");
    }

    puts("\n// CREATORS\n");
    puts(symClassName()+"("+topClassName()+"* topp, const char* namep);\n");
    puts((string)"~"+symClassName()+"() {};\n");

    puts("\n// METHODS\n");
    puts("inline const char* name() { return __Vm_namep; }\n");
    puts("inline bool getClearActivity() { bool r=__Vm_activity; __Vm_activity=false; return r;}\n");
    puts("\n");
    puts("} VL_ATTR_ALIGNED(64);\n");
    puts("#endif  /*guard*/\n");
}

void EmitCSyms::emitSymImp() {
    UINFO(6,__FUNCTION__<<": "<<endl);
    string filename = v3Global.opt.makeDir()+"/"+symClassName()+".cpp";
    AstCFile* cfilep = newCFile(filename, true/*slow*/, true/*source*/);
    cfilep->support(true);
    V3OutCFile cf (filename);
    m_ofp = &cf;
    ofp()->putsHeader();
    puts("// DESCR" "IPTION: Verilator output: Symbol table implementation internals\n");
    puts("\n");

    // Includes
    puts("#include \""+symClassName()+".h\"\n");
    for (AstNodeModule* nodep = v3Global.rootp()->modulesp(); nodep; nodep=nodep->nextp()->castNodeModule()) {
      puts("#include \""+modClassName(nodep)+".h\"\n");
    }

    //puts("\n// GLOBALS\n");

    puts("\n// FUNCTIONS\n");
    puts(symClassName()+"::"+symClassName()+"("+topClassName()+"* topp, const char* namep)\n");
    puts("\t// Setup locals\n");
    puts("\t: __Vm_namep(namep)\n");      // No leak, as we get destroyed when the top is destroyed
    puts("\t, __Vm_activity(false)\n");
    puts("\t, __Vm_didInit(false)\n");
    puts("\t// Setup submodule names\n");
    char comma=',';
    for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
      AstScope* scopep = it->first;  AstNodeModule* modp = it->second;
      if (modp->isTop()) {
      } else {
          ofp()->printf("\t%c %-30s ", comma, scopep->nameDotless().c_str());
          puts("(Verilated::catName(topp->name(),");
          // The "." is added by catName
          putsQuoted(scopep->prettyName());
          puts("))\n");
          comma=',';
      }
    }
    puts("{\n");

    puts("// Pointer to top level\n");
    puts("TOPp = topp;\n");
    puts("// Setup each module's pointers to their submodules\n");
    for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
      AstScope* scopep = it->first;  AstNodeModule* modp = it->second;
      if (!modp->isTop()) {
          string arrow = scopep->name();
          string::size_type pos;
          while ((pos=arrow.find(".")) != string::npos) {
            arrow.replace(pos, 1, "->");
          }
          if (arrow.substr(0,5) == "TOP->") arrow.replace(0,5,"TOPp->");
          ofp()->printf("%-30s ", arrow.c_str());
          puts(" = &");
          puts(scopep->nameDotless()+";\n");
      }
    }

    puts("// Setup each module's pointer back to symbol table (for public functions)\n");
    puts("TOPp->__Vconfigure(this, true);\n");
    for (vector<ScopeModPair>::iterator it = m_scopes.begin(); it != m_scopes.end(); ++it) {
      AstScope* scopep = it->first;  AstNodeModule* modp = it->second;
      if (!modp->isTop()) {
          // first is used by AstCoverDecl's call to __vlCoverInsert
          bool first = !modp->user1();
          modp->user1(true);
          puts(scopep->nameDotless()+".__Vconfigure(this, "
             +(first?"true":"false")
             +");\n");
      }
    }

    puts("// Setup scope names\n");
    for (ScopeNames::iterator it = m_scopeNames.begin(); it != m_scopeNames.end(); ++it) {
      puts("__Vscope_"+it->second.m_symName+".configure(this,name(),");
      putsQuoted(it->second.m_prettyName);
      puts(");\n");
    }

    if (v3Global.dpi()) {
      puts("// Setup export functions\n");
      puts("for (int __Vfinal=0; __Vfinal<2; __Vfinal++) {\n");
      for (ScopeFuncs::iterator it = m_scopeFuncs.begin(); it != m_scopeFuncs.end(); ++it) {
          AstScopeName* scopep = it->second.m_scopep;
          AstCFunc* funcp = it->second.m_funcp;
          AstNodeModule* modp = it->second.m_modp;
          if (funcp->dpiExport()) {
            puts("__Vscope_"+scopep->scopeSymName()+".exportInsert(__Vfinal,");
            putsQuoted(funcp->cname());
            puts(", (void*)(&");
            puts(modClassName(modp));
            puts("::");
            puts(funcp->name());
            puts("));\n");
          }
      }
      // It would be less code if each module inserted its own variables.
      // Someday.  For now public isn't common.
      for (ScopeVars::iterator it = m_scopeVars.begin(); it != m_scopeVars.end(); ++it) {
          AstNodeModule* modp = it->second.m_modp;
          AstScope* scopep = it->second.m_scopep;
          AstVar* varp = it->second.m_varp;
          //
          int dim=0;
          string bounds;
          if (AstBasicDType* basicp = varp->basicp()) {
            // Range is always first, it's not in "C" order
            if (basicp->rangep()) {
                bounds += " ,"; bounds += cvtToStr(basicp->rangep()->msbConst());
                bounds += ","; bounds += cvtToStr(basicp->rangep()->lsbConst());
                dim++;
            }
            for (AstNodeDType* dtypep=varp->dtypep(); dtypep; ) {
                dtypep = dtypep->skipRefp();  // Skip AstRefDType/AstTypedef, or return same node
                if (AstArrayDType* adtypep = dtypep->castArrayDType()) {
                  bounds += " ,"; bounds += cvtToStr(adtypep->arrayp()->msbConst());
                  bounds += ","; bounds += cvtToStr(adtypep->arrayp()->lsbConst());
                  dim++;
                  dtypep = adtypep->dtypep();
                }
                else break; // AstBasicDType - nothing below, 1
            }
          }
          //
          if (dim>2) {
            puts("//UNSUP ");  // VerilatedImp can't deal with >2d arrays
          }
          puts("__Vscope_"+it->second.m_scopeName+".varInsert(__Vfinal,");
          putsQuoted(it->second.m_varBasePretty);
          puts(", &(");
          if (modp->isTop()) {
            puts(scopep->nameDotless());
            puts("p->");
          } else {
            puts(scopep->nameDotless());
            puts(".");
          }
          puts(varp->name());
          puts("), ");
          puts(varp->vlEnumType());  // VLVT_UINT32 etc
          puts(",");
          puts(varp->vlEnumDir());  // VLVD_IN etc
          if (varp->isSigUserRWPublic()) puts("|VLVF_PUB_RW");
          else if (varp->isSigUserRdPublic()) puts("|VLVF_PUB_RD");
          puts(",");
          puts(cvtToStr(dim));
          puts(bounds);
          puts(");\n");
      }
      puts("}\n");
    }

    puts("}\n");
    puts("\n");
}

//######################################################################

void EmitCSyms::emitDpiHdr() {
    UINFO(6,__FUNCTION__<<": "<<endl);
    string filename = v3Global.opt.makeDir()+"/"+topClassName()+"__Dpi.h";
    AstCFile* cfilep = newCFile(filename, false/*slow*/, false/*source*/);
    cfilep->support(true);
    V3OutCFile hf (filename);
    m_ofp = &hf;

    m_ofp->putsHeader();
    puts("// DESCR" "IPTION: Verilator output: Prototypes for DPI import and export functions.\n");
    puts("//\n");
    puts("// Verilator includes this file in all generated .cpp files that use DPI functions.\n");
    puts("// Manually include this file where DPI .c import functions are declared to insure\n");
    puts("// the C functions match the expectations of the DPI imports.\n");
    puts("\n");
    puts("#ifdef __cplusplus\n");
    puts("extern \"C\" {\n");
    puts("#endif\n");
    puts("\n");
    
    bool firstExp = false;
    bool firstImp = false;
    for (vector<AstCFunc*>::iterator it = m_dpis.begin(); it != m_dpis.end(); ++it) {
      AstCFunc* nodep = *it;
      if (nodep->dpiExportWrapper()) {
          if (!firstExp++) puts("\n// DPI EXPORTS\n");
          puts("// DPI Export at "+nodep->fileline()->ascii()+"\n");
          puts("extern "+nodep->rtnTypeVoid()+" "+nodep->name()+" ("+cFuncArgs(nodep)+");\n");
      }
      else if (nodep->dpiImport()) {
          if (!firstImp++) puts("\n// DPI IMPORTS\n");
          puts("// DPI Import at "+nodep->fileline()->ascii()+"\n");
          puts("extern "+nodep->rtnTypeVoid()+" "+nodep->name()+" ("+cFuncArgs(nodep)+");\n");
      }
    }

    puts("\n");
    puts("#ifdef __cplusplus\n");
    puts("}\n");
    puts("#endif\n");
}

//######################################################################

void EmitCSyms::emitDpiImp() {
    UINFO(6,__FUNCTION__<<": "<<endl);
    string filename = v3Global.opt.makeDir()+"/"+topClassName()+"__Dpi.cpp";
    AstCFile* cfilep = newCFile(filename, false/*slow*/, true/*source*/);
    cfilep->support(true);
    V3OutCFile hf (filename);
    m_ofp = &hf;

    m_ofp->putsHeader();
    puts("// DESCR" "IPTION: Verilator output: Implementation of DPI export functions.\n");
    puts("//\n");
    puts("// Verilator compiles this file in when DPI functions are used.\n");
    puts("// If you have multiple Verilated designs with the same DPI exported\n");
    puts("// function names, you will get multiple definition link errors from here.\n");
    puts("// This is an unfortunate result of the DPI specification.\n");
    puts("// To solve this, either\n");
    puts("//    1. Call "+topClassName()+"::{export_function} instead,\n");
    puts("//       and do not even bother to compile this file\n");
    puts("// or 2. Compile all __Dpi.cpp files in the same compiler run,\n");
    puts("//       and #ifdefs already inserted here will sort everything out.\n");
    puts("\n");
    
    puts("#include \""+topClassName()+"__Dpi.h\"\n");
    puts("#include \""+topClassName()+".h\"\n");
    puts("\n");

    for (vector<AstCFunc*>::iterator it = m_dpis.begin(); it != m_dpis.end(); ++it) {
      AstCFunc* nodep = *it;
      if (nodep->dpiExportWrapper()) {
          puts("#ifndef _VL_DPIDECL_"+nodep->name()+"\n");
          puts("#define _VL_DPIDECL_"+nodep->name()+"\n");
          puts(nodep->rtnTypeVoid()+" "+nodep->name()+" ("+cFuncArgs(nodep)+") {\n");
          puts("// DPI Export at "+nodep->fileline()->ascii()+"\n");
          puts("return "+topClassName()+"::"+nodep->name()+"(");
          string args;
          for (AstNode* stmtp = nodep->argsp(); stmtp; stmtp=stmtp->nextp()) {
            if (AstVar* portp = stmtp->castVar()) {
                if (portp->isIO() && !portp->isFuncReturn()) {
                  if (args != "") args+= ", ";
                  args += portp->name();
                }
            }
          }
          puts(args+");\n");
          puts("}\n");
          puts("#endif\n");
          puts("\n");
      }
    }
}

//######################################################################
// EmitC class functions

void V3EmitC::emitcSyms() {
    UINFO(2,__FUNCTION__<<": "<<endl);
    EmitCSyms syms (v3Global.rootp());
}

Generated by  Doxygen 1.6.0   Back to index