ld/ldctor.h

   1 /* ldctor.h - linker constructor support
   2    Copyright (C) 1991-2024 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 LDCTOR_H
  22 #define LDCTOR_H
  23
  24 /* List of statements needed to handle constructors */
  25 extern lang_statement_list_type constructor_list;
  26
  27 /* Whether the constructors should be sorted.  Note that this is
  28    global for the entire link; we assume that there is only a single
  29    CONSTRUCTORS command in the linker script.  */
  30 extern bool constructors_sorted;
  31
  32 /* We keep a list of these structures for each set we build.  */
  33
  34 struct set_info {
  35   struct set_info *next;                /* Next set.  */
  36   struct bfd_link_hash_entry *h;        /* Hash table entry.  */
  37   bfd_reloc_code_real_type reloc;       /* Reloc to use for an entry.  */
  38   size_t count;                         /* Number of elements.  */
  39   struct set_element *elements;         /* Elements in set.  */
  40 };
  41
  42 struct set_element {
  43   union {
  44     struct set_element *next;           /* Next element.  */
  45     long idx;
  46   } u;
  47   const char *name;                     /* Name in set (may be NULL).  */
  48   asection *section;                    /* Section of value in set.  */
  49   bfd_vma value;                        /* Value in set.  */
  50 };
  51
  52 /* The sets we have seen.  */
  53
  54 extern struct set_info *sets;
  55
  56 extern void ldctor_add_set_entry
  57   (struct bfd_link_hash_entry *, bfd_reloc_code_real_type, const char *,
  58    asection *, bfd_vma);
  59 extern void ldctor_build_sets
  60   (void);
  61
  62 #endif