gold/script.h

   1 // script.h -- handle linker scripts for gold   -*- C++ -*-
   2
   3 // Copyright 2006, 2007 Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@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 // We implement a subset of the original GNU ld linker script language
  24 // for compatibility.  The goal is not to implement the entire
  25 // language.  It is merely to implement enough to handle common uses.
  26 // In particular we need to handle /usr/lib/libc.so on a typical
  27 // GNU/Linux system, and we want to handle linker scripts used by the
  28 // Linux kernel build.
  29
  30 #ifndef GOLD_SCRIPT_H
  31 #define GOLD_SCRIPT_H
  32
  33 namespace gold
  34 {
  35
  36 class General_options;
  37 class Command_line;
  38 class Symbol_table;
  39 class Layout;
  40 class Input_argument;
  41 class Input_objects;
  42 class Input_group;
  43 class Input_file;
  44 class Task_token;
  45 class Workqueue;
  46
  47 // FILE was found as an argument on the command line, but was not
  48 // recognized as an ELF file.  Try to read it as a script.  We've
  49 // already read BYTES of data into P.  Return true if the file was
  50 // handled.  This has to handle /usr/lib/libc.so on a GNU/Linux
  51 // system.
  52
  53 bool
  54 read_input_script(Workqueue*, const General_options&, Symbol_table*, Layout*,
  55                   Dirsearch*, Input_objects*, Input_group*,
  56                   const Input_argument*, Input_file*, const unsigned char* p,
  57                   off_t bytes, Task_token* this_blocker,
  58                   Task_token* next_blocker);
  59
  60 // FILE was found as an argument to --script (-T).
  61 // Read it as a script, and execute its contents immediately.
  62
  63 bool
  64 read_commandline_script(const char* filename, Command_line*);
  65
  66 } // End namespace gold.
  67
  68 #endif // !defined(GOLD_SCRIPT_H)