1 /* genlink.h -- interface to the BFD generic linker
2 Copyright (C) 1993-2023 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
25 /* This header file is internal to BFD. It describes the internal
26 structures and functions used by the BFD generic linker, in case
27 any of the more specific linkers want to use or call them. Note
28 that some functions, such as _bfd_generic_link_hash_table_create,
29 are declared in libbfd.h, because they are expected to be widely
30 used. The functions and structures in this file will probably only
31 be used by a few files besides linker.c itself. In fact, this file
32 is not particularly complete; I have only put in the interfaces I
35 /* The generic linker uses a hash table which is a derived class of
36 the standard linker hash table, just as the other backend specific
37 linkers do. Do not confuse the generic linker hash table with the
38 standard BFD linker hash table it is built upon. */
40 /* Generic linker hash table entries. */
42 struct generic_link_hash_entry
44 struct bfd_link_hash_entry root
;
45 /* Whether this symbol has been written out. */
47 /* Symbol from input BFD. */
51 /* Generic linker hash table. */
53 struct generic_link_hash_table
55 struct bfd_link_hash_table root
;
58 /* Look up an entry in a generic link hash table. */
60 #define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \
61 ((struct generic_link_hash_entry *) \
62 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
64 /* Traverse a generic link hash table. */
66 #define _bfd_generic_link_hash_traverse(table, func, info) \
67 (bfd_link_hash_traverse \
69 (bool (*) (struct bfd_link_hash_entry *, void *)) (func), \
72 /* Get the generic link hash table from the info structure. This is
75 #define _bfd_generic_hash_table(p) \
76 ((struct generic_link_hash_table *) ((p)->hash))
78 /* The generic linker reads in the asymbol structures for an input BFD
79 and keeps them in the outsymbol and symcount fields. */
81 #define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols)
82 #define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount)
84 /* Add the symbols of input_bfd to the symbols being built for
86 extern bool _bfd_generic_link_output_symbols
87 (bfd
*, bfd
*, struct bfd_link_info
*, size_t *);
89 /* This structure is used to pass information to
90 _bfd_generic_link_write_global_symbol, which may be called via
91 _bfd_generic_link_hash_traverse. */
93 struct generic_write_global_symbol_info
95 struct bfd_link_info
*info
;
100 /* Write out a single global symbol. This is expected to be called
101 via _bfd_generic_link_hash_traverse. The second argument must
102 actually be a struct generic_write_global_symbol_info *. */
103 extern bool _bfd_generic_link_write_global_symbol
104 (struct generic_link_hash_entry
*, void *);
106 /* Generic link hash table entry creation routine. */
107 struct bfd_hash_entry
*_bfd_generic_link_hash_newfunc
108 (struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *);