예제 #1
0
파일: MCJIT.cpp 프로젝트: Xmister/llvm-onex
uint64_t MCJIT::getSymbolAddress(const std::string &Name,
                                 bool CheckFunctionsOnly)
{
  MutexGuard locked(lock);

  // First, check to see if we already have this symbol.
  uint64_t Addr = getExistingSymbolAddress(Name);
  if (Addr)
    return Addr;

  SmallVector<object::Archive*, 2>::iterator I, E;
  for (I = Archives.begin(), E = Archives.end(); I != E; ++I) {
    object::Archive *A = *I;
    // Look for our symbols in each Archive
    object::Archive::child_iterator ChildIt = A->findSym(Name);
    if (ChildIt != A->child_end()) {
      OwningPtr<object::Binary> ChildBin;
      // FIXME: Support nested archives?
      if (!ChildIt->getAsBinary(ChildBin) && ChildBin->isObject()) {
        object::ObjectFile *OF = reinterpret_cast<object::ObjectFile *>(
                                                            ChildBin.take());
        // This causes the object file to be loaded.
        addObjectFile(OF);
        // The address should be here now.
        Addr = getExistingSymbolAddress(Name);
        if (Addr)
          return Addr;
      }
    }
  }

  // If it hasn't already been generated, see if it's in one of our modules.
  Module *M = findModuleForSymbol(Name, CheckFunctionsOnly);
  if (!M)
    return 0;

  generateCodeForModule(M);

  // Check the RuntimeDyld table again, it should be there now.
  return getExistingSymbolAddress(Name);
}