DWARFExpression lldb_private::npdb::MakeConstantLocationExpression(
    TypeIndex underlying_ti, TpiStream &tpi, const llvm::APSInt &constant,
    ModuleSP module) {
  const ArchSpec &architecture = module->GetArchitecture();
  uint32_t address_size = architecture.GetAddressByteSize();

  size_t size = 0;
  bool is_signed = false;
  std::tie(size, is_signed) = GetIntegralTypeInfo(underlying_ti, tpi);

  union {
    llvm::support::little64_t I;
    llvm::support::ulittle64_t U;
  } Value;

  std::shared_ptr<DataBufferHeap> buffer = std::make_shared<DataBufferHeap>();
  buffer->SetByteSize(size);

  llvm::ArrayRef<uint8_t> bytes;
  if (is_signed) {
    Value.I = constant.getSExtValue();
  } else {
    Value.U = constant.getZExtValue();
  }

  bytes = llvm::makeArrayRef(reinterpret_cast<const uint8_t *>(&Value), 8)
              .take_front(size);
  buffer->CopyData(bytes.data(), size);
  DataExtractor extractor(buffer, lldb::eByteOrderLittle, address_size);
  DWARFExpression result(nullptr, extractor, nullptr, 0, size);
  return result;
}
Exemplo n.º 2
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TemplateArgument::TemplateArgument(ASTContext &Ctx, const llvm::APSInt &Value,
                                   QualType Type) {
  Integer.Kind = Integral;
  // Copy the APSInt value into our decomposed form.
  Integer.BitWidth = Value.getBitWidth();
  Integer.IsUnsigned = Value.isUnsigned();
  // If the value is large, we have to get additional memory from the ASTContext
  unsigned NumWords = Value.getNumWords();
  if (NumWords > 1) {
    void *Mem = Ctx.Allocate(NumWords * sizeof(uint64_t));
    std::memcpy(Mem, Value.getRawData(), NumWords * sizeof(uint64_t));
    Integer.pVal = static_cast<uint64_t *>(Mem);
  } else {
    Integer.VAL = Value.getZExtValue();
  }

  Integer.Type = Type.getAsOpaquePtr();
}