contrib/llvm-project/lld/include/lld/Common/DWARF.h

   1 //===- DWARF.h --------------------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLD_DWARF_H
  10 #define LLD_DWARF_H
  11
  12 #include "lld/Common/LLVM.h"
  13 #include "llvm/ADT/DenseMap.h"
  14 #include "llvm/ADT/StringRef.h"
  15 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
  16 #include "llvm/DebugInfo/DWARF/DWARFDebugLine.h"
  17 #include <memory>
  18 #include <string>
  19
  20 namespace llvm {
  21 struct DILineInfo;
  22 } // namespace llvm
  23
  24 namespace lld {
  25
  26 class DWARFCache {
  27 public:
  28   DWARFCache(std::unique_ptr<llvm::DWARFContext> dwarf);
  29   llvm::Optional<llvm::DILineInfo> getDILineInfo(uint64_t offset,
  30                                                  uint64_t sectionIndex);
  31   llvm::Optional<std::pair<std::string, unsigned>>
  32   getVariableLoc(StringRef name);
  33
  34 private:
  35   std::unique_ptr<llvm::DWARFContext> dwarf;
  36   std::vector<const llvm::DWARFDebugLine::LineTable *> lineTables;
  37   struct VarLoc {
  38     const llvm::DWARFDebugLine::LineTable *lt;
  39     unsigned file;
  40     unsigned line;
  41   };
  42   llvm::DenseMap<StringRef, VarLoc> variableLoc;
  43 };
  44
  45 } // namespace lld
  46
  47 #endif