| 1 | /* genlink.h -- interface to the BFD generic linker
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| 2 | Copyright 1993, 1994, 1996, 2002 Free Software Foundation, Inc.
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| 3 | Written by Ian Lance Taylor, Cygnus Support.
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| 4 |
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| 5 | This file is part of BFD, the Binary File Descriptor library.
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| 6 |
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| 7 | This program is free software; you can redistribute it and/or modify
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| 8 | it under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 2 of the License, or
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| 10 | (at your option) any later version.
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| 11 |
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| 12 | This program is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with this program; if not, write to the Free Software
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| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 20 |
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| 21 | #ifndef GENLINK_H
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| 22 | #define GENLINK_H
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| 23 |
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| 24 | /* This header file is internal to BFD. It describes the internal
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| 25 | structures and functions used by the BFD generic linker, in case
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| 26 | any of the more specific linkers want to use or call them. Note
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| 27 | that some functions, such as _bfd_generic_link_hash_table_create,
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| 28 | are declared in libbfd.h, because they are expected to be widely
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| 29 | used. The functions and structures in this file will probably only
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| 30 | be used by a few files besides linker.c itself. In fact, this file
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| 31 | is not particularly complete; I have only put in the interfaces I
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| 32 | actually needed. */
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| 33 |
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| 34 | /* The generic linker uses a hash table which is a derived class of
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| 35 | the standard linker hash table, just as the other backend specific
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| 36 | linkers do. Do not confuse the generic linker hash table with the
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| 37 | standard BFD linker hash table it is built upon. */
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| 38 |
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| 39 | /* Generic linker hash table entries. */
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| 40 |
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| 41 | struct generic_link_hash_entry
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| 42 | {
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| 43 | struct bfd_link_hash_entry root;
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| 44 | /* Whether this symbol has been written out. */
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| 45 | bfd_boolean written;
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| 46 | /* Symbol from input BFD. */
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| 47 | asymbol *sym;
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| 48 | };
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| 49 |
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| 50 | /* Generic linker hash table. */
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| 51 |
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| 52 | struct generic_link_hash_table
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| 53 | {
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| 54 | struct bfd_link_hash_table root;
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| 55 | };
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| 56 |
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| 57 | /* Look up an entry in a generic link hash table. */
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| 58 |
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| 59 | #define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \
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| 60 | ((struct generic_link_hash_entry *) \
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| 61 | bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
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| 62 |
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| 63 | /* Traverse a generic link hash table. */
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| 64 |
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| 65 | #define _bfd_generic_link_hash_traverse(table, func, info) \
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| 66 | (bfd_link_hash_traverse \
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| 67 | (&(table)->root, \
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| 68 | (bfd_boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
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| 69 | (info)))
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| 70 |
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| 71 | /* Get the generic link hash table from the info structure. This is
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| 72 | just a cast. */
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| 73 |
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| 74 | #define _bfd_generic_hash_table(p) \
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| 75 | ((struct generic_link_hash_table *) ((p)->hash))
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| 76 |
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| 77 | /* The generic linker reads in the asymbol structures for an input BFD
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| 78 | and keeps them in the outsymbol and symcount fields. */
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| 79 |
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| 80 | #define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols)
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| 81 | #define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount)
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| 82 |
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| 83 | /* Add the symbols of input_bfd to the symbols being built for
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| 84 | output_bfd. */
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| 85 | extern bfd_boolean _bfd_generic_link_output_symbols
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| 86 | PARAMS ((bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *,
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| 87 | size_t *psymalloc));
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| 88 |
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| 89 | /* This structure is used to pass information to
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| 90 | _bfd_generic_link_write_global_symbol, which may be called via
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| 91 | _bfd_generic_link_hash_traverse. */
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| 92 |
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| 93 | struct generic_write_global_symbol_info
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| 94 | {
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| 95 | struct bfd_link_info *info;
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| 96 | bfd *output_bfd;
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| 97 | size_t *psymalloc;
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| 98 | };
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| 99 |
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| 100 | /* Write out a single global symbol. This is expected to be called
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| 101 | via _bfd_generic_link_hash_traverse. The second argument must
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| 102 | actually be a struct generic_write_global_symbol_info *. */
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| 103 | extern bfd_boolean _bfd_generic_link_write_global_symbol
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| 104 | PARAMS ((struct generic_link_hash_entry *, PTR));
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| 105 |
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| 106 | /* Generic link hash table entry creation routine. */
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| 107 | struct bfd_hash_entry *_bfd_generic_link_hash_newfunc
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| 108 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
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| 109 | const char *));
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| 110 |
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| 111 | #endif
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