ld/plugin.h

   1 /* Plugin control for the GNU linker.
   2    Copyright 2010, 2011 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #ifndef GLD_PLUGIN_H
  22 #define GLD_PLUGIN_H
  23
  24 /* Report plugin symbols.  */
  25 extern bfd_boolean report_plugin_symbols;
  26
  27 /* This is the only forward declaration we need to avoid having
  28    to include the plugin-api.h header in order to use this file.  */
  29 struct ld_plugin_input_file;
  30
  31 /* Handle -plugin arg: find and load plugin, or return error.  */
  32 extern int plugin_opt_plugin (const char *plugin);
  33
  34 /* Accumulate option arguments for last-loaded plugin, or return
  35    error if none.  */
  36 extern int plugin_opt_plugin_arg (const char *arg);
  37
  38 /* Return true if any plugins are active this run.  Only valid
  39    after options have been processed.  */
  40 extern bfd_boolean plugin_active_plugins_p (void);
  41
  42 /* Load up and initialise all plugins after argument parsing.  */
  43 extern int plugin_load_plugins (void);
  44
  45 /* Return name of plugin which caused an error in any of the above.  */
  46 extern const char *plugin_error_plugin (void);
  47
  48 /* Call 'claim file' hook for all plugins.  */
  49 extern int plugin_call_claim_file (const struct ld_plugin_input_file *file,
  50                                    int *claimed);
  51
  52 /* Call 'all symbols read' hook for all plugins.  */
  53 extern int plugin_call_all_symbols_read (void);
  54
  55 /* Call 'cleanup' hook for all plugins at exit.  */
  56 extern void plugin_call_cleanup (void);
  57
  58 /* Generate a dummy BFD to represent an IR file, for any callers of
  59    plugin_call_claim_file to use as the handle in the ld_plugin_input_file
  60    struct that they build to pass in.  The BFD is initially writable, so
  61    that symbols can be added to it; it must be made readable after the
  62    add_symbols hook has been called so that it can be read when linking.  */
  63 extern bfd *plugin_get_ir_dummy_bfd (const char *name, bfd *template);
  64
  65 /* Notice-symbol bfd linker callback hook.  */
  66 extern bfd_boolean plugin_notice (struct bfd_link_info *info,
  67                                   const char *name, bfd *abfd,
  68                                   asection *section, bfd_vma value);
  69
  70 /* Multiple-definition bfd linker callback hook.  */
  71 extern bfd_boolean plugin_multiple_definition (struct bfd_link_info *info,
  72                                                const char *name,
  73                                                bfd *obfd, asection *osec,
  74                                                bfd_vma oval, bfd *nbfd,
  75                                                asection *nsec,
  76                                                bfd_vma nval);
  77
  78 #endif /* !def GLD_PLUGIN_H */