ld/plugin.h

   1 /* Plugin control for the GNU linker.
   2    Copyright 2010 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
  25 /* This is the only forward declaration we need to avoid having
  26    to include the plugin-api.h header in order to use this file.  */
  27 struct ld_plugin_input_file;
  28
  29 /* Handle -plugin arg: find and load plugin, or return error.  */
  30 extern int plugin_opt_plugin (const char *plugin);
  31
  32 /* Accumulate option arguments for last-loaded plugin, or return
  33    error if none.  */
  34 extern int plugin_opt_plugin_arg (const char *arg);
  35
  36 /* Return true if any plugins are active this run.  Only valid
  37    after options have been processed.  */
  38 extern bfd_boolean plugin_active_plugins_p (void);
  39
  40 /* Load up and initialise all plugins after argument parsing.  */
  41 extern int plugin_load_plugins (void);
  42
  43 /* Return name of plugin which caused an error in any of the above.  */
  44 extern const char *plugin_error_plugin (void);
  45
  46 /* Call 'claim file' hook for all plugins.  */
  47 extern int plugin_call_claim_file (const struct ld_plugin_input_file *file,
  48                                    int *claimed);
  49
  50 /* Call 'all symbols read' hook for all plugins.  */
  51 extern int plugin_call_all_symbols_read (void);
  52
  53 /* Generate a dummy BFD to represent an IR file, for any callers of
  54    plugin_call_claim_file to use as the handle in the ld_plugin_input_file
  55    struct that they build to pass in.  The BFD is initially writable, so
  56    that symbols can be added to it; it must be made readable after the
  57    add_symbols hook has been called so that it can be read when linking.  */
  58 extern bfd *plugin_get_ir_dummy_bfd (const char *name, bfd *template);
  59
  60 /* Notice-symbol bfd linker callback hook.  */
  61 extern bfd_boolean plugin_notice (struct bfd_link_info *info,
  62                                   const char *name, bfd *abfd,
  63                                   asection *section, bfd_vma value);
  64
  65 /* Multiple-definition bfd linker callback hook.  */
  66 extern bfd_boolean plugin_multiple_definition (struct bfd_link_info *info,
  67                                                const char *name,
  68                                                bfd *obfd, asection *osec,
  69                                                bfd_vma oval, bfd *nbfd,
  70                                                asection *nsec,
  71                                                bfd_vma nval);
  72
  73 #endif /* !def GLD_PLUGIN_H */