gold/incremental.h

   1 // inremental.h -- incremental linking support for gold   -*- C++ -*-
   2
   3 // Copyright 2009 Free Software Foundation, Inc.
   4 // Written by Mikolaj Zalewski <mikolajz@google.com>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #ifndef GOLD_INCREMENTAL_H
  24 #define GOLD_INCREMENTAL_H
  25
  26 #include <vector>
  27
  28 #include "stringpool.h"
  29 #include "workqueue.h"
  30
  31 namespace gold
  32 {
  33
  34 class Archive;
  35 class Input_argument;
  36 class Incremental_inputs_checker;
  37 class Object;
  38 class Output_section_data;
  39
  40 // This class contains the information needed during an incremental
  41 // build about the inputs necessary to build the .gnu_incremental_inputs.
  42 class Incremental_inputs
  43 {
  44  public:
  45   Incremental_inputs()
  46     : command_line_key_(0), strtab_(new Stringpool())
  47   { }
  48   ~Incremental_inputs() { delete this->strtab_; }
  49
  50   // Record the command line.
  51   void
  52   report_command_line(int argc, const char* const* argv);
  53
  54   // Prepare for layout.  Called from Layout::finalize.
  55   void
  56   finalize();
  57
  58   // Create the content of the .gnu_incremental_inputs section.
  59   Output_section_data*
  60   create_incremental_inputs_section_data();
  61
  62   // Return the .gnu_incremental_strtab stringpool.
  63   Stringpool*
  64   get_stringpool()
  65   { return this->strtab_; }
  66
  67  private:
  68   // Code for each of the four possible variants of create_inputs_section_data.
  69   template<int size, bool big_endian>
  70   Output_section_data*
  71   sized_create_inputs_section_data();
  72
  73   // The key of the command line string in the string pool.
  74   Stringpool::Key command_line_key_;
  75   // The .gnu_incremental_strtab string pool associated with the
  76   // .gnu_incremental_inputs.
  77   Stringpool* strtab_;
  78 };
  79
  80 } // End namespace gold.
  81
  82 #endif // !defined(GOLD_INCREMENTAL_H)