text: /*
     +----------------------------------------------------------------------+
     | HipHop for PHP                                                       |
     +----------------------------------------------------------------------+
     | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
     +----------------------------------------------------------------------+
     | This source file is subject to version 3.01 of the PHP license,      |
     | that is bundled with this package in the file LICENSE, and is        |
     | available through the world-wide-web at the following url:           |
     | http://www.php.net/license/3_01.txt                                  |
     | If you did not receive a copy of the PHP license and are unable to   |
     | obtain it through the world-wide-web, please send a note to          |
     | license@php.net so we can mail you a copy immediately.               |
     +----------------------------------------------------------------------+
  */
  #ifndef HPHP_ELFWRITER_H_
  #define HPHP_ELFWRITER_H_
  
  #include "hphp/runtime/base/types.h"
  #include "hphp/runtime/vm/debug/dwarf.h"
  #include <elf.h>
  #include <gelf.h>
  #include <vector>
  #include <string>
  
  namespace HPHP {
  namespace Debug {
  
  struct ElfWriter {
    int m_fd;
    Elf *m_elf;
    std::string m_filename;
    Elf64_Ehdr *m_ehdr;
    vector<unsigned char> m_strtab;
    Dwarf_P_Debug m_dwarfProducer;
    typedef std::map<const char *, Dwarf_Signed> FileDB;
    FileDB m_fileDB;
  
    explicit ElfWriter(DwarfChunk* d);
    ~ElfWriter();
    int dwarfCallback(char *name, int size, Dwarf_Unsigned type,
      Dwarf_Unsigned flags, Dwarf_Unsigned link, Dwarf_Unsigned info);
    void logError(const std::string& msg);
    int addSectionString(const std::string& name);
    void initStrtab();
    bool initElfHeader();
    bool initDwarfProducer();
    Dwarf_P_Die makeLocalTypeDie();
    Dwarf_P_Die addFunctionInfo(FunctionInfo* f, Dwarf_P_Die type);
    bool addSymbolInfo(DwarfChunk* d);
    bool addFrameInfo(DwarfChunk* d);
    bool writeDwarfInfo();
    int newSection(
      char *name, uint64_t size, uint32_t type,
      uint64_t flags, uint64_t addr = 0);
    bool addSectionData(int section, void *data, uint64_t size);
    int writeStringSection();
    int writeTextSection();
  };
  
  }
  }
  
  #endif
  