Win64ModuleUnwindMetadata.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef Win64ModuleUnwindMetadata_h

#define Win64ModuleUnwindMetadata_h

#if XP_WIN && HAVE_64BIT_BUILD

#  include <functional>

#  include <map>

#  include <string>

#  include <windows.h>

#  include <winnt.h>

#  include <imagehlp.h>

namespace CrashReporter {

struct UnwindCFI {

  uint32_t beginAddress;

  uint32_t size;

  uint32_t stackSize;

  uint32_t ripOffset;

};

// Does lazy-parsing of unwind info.

class ModuleUnwindParser {

  PLOADED_IMAGE mImg;

  std::string mPath;

  // Maps begin address to exception record.

  // Populated upon construction.

  std::map<DWORD, PIMAGE_RUNTIME_FUNCTION_ENTRY> mUnwindMap;

  // Maps begin address to CFI.

  // Populated as needed.

  std::map<DWORD, UnwindCFI> mCFIMap;

  bool GenerateCFIForFunction(IMAGE_RUNTIME_FUNCTION_ENTRY& aFunc,

                              UnwindCFI& aRet);

  void* RvaToVa(ULONG aRva);

 public:

  explicit ModuleUnwindParser(const std::string& aPath);

  ~ModuleUnwindParser();

  bool GetCFI(DWORD aAddress, UnwindCFI& aRet);

  DWORD GetAnyOffsetAddr() const;

};

}  // namespace CrashReporter

#endif  // XP_WIN && HAVE_64BIT_BUILD

#endif  // Win64ModuleUnwindMetadata_h