lld/include/lld/Common/DWARF.h

//===- DWARF.h --------------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLD_DWARF_H
#define LLD_DWARF_H

#include "lld/Common/LLVM.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/DWARF/DWARFContext.h"
#include "llvm/DebugInfo/DWARF/DWARFDebugLine.h"
#include <memory>
#include <string>

namespace llvm {
struct DILineInfo;
} // namespace llvm

namespace lld {

class DWARFCache {
public:
  DWARFCache(std::unique_ptr<llvm::DWARFContext> dwarf);
  std::optional<llvm::DILineInfo> getDILineInfo(uint64_t offset,
                                                uint64_t sectionIndex);
  std::optional<std::pair<std::string, unsigned>>
  getVariableLoc(StringRef name);

  llvm::DWARFContext *getContext() { return dwarf.get(); }

private:
  std::unique_ptr<llvm::DWARFContext> dwarf;
  std::vector<const llvm::DWARFDebugLine::LineTable *> lineTables;
  struct VarLoc {
    const llvm::DWARFDebugLine::LineTable *lt;
    unsigned file;
    unsigned line;
  };
  llvm::DenseMap<StringRef, VarLoc> variableLoc;
};

} // namespace lld

#endif