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/* genlink.h -- interface to the BFD generic linker
Copyright (C) 1993-2020 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef GENLINK_H
#define GENLINK_H
/* This header file is internal to BFD. It describes the internal
structures and functions used by the BFD generic linker, in case
any of the more specific linkers want to use or call them. Note
that some functions, such as _bfd_generic_link_hash_table_create,
are declared in libbfd.h, because they are expected to be widely
used. The functions and structures in this file will probably only
be used by a few files besides linker.c itself. In fact, this file
is not particularly complete; I have only put in the interfaces I
actually needed. */
/* The generic linker uses a hash table which is a derived class of
the standard linker hash table, just as the other backend specific
linkers do. Do not confuse the generic linker hash table with the
standard BFD linker hash table it is built upon. */
/* Generic linker hash table entries. */
struct generic_link_hash_entry
{
struct bfd_link_hash_entry root;
/* Whether this symbol has been written out. */
bfd_boolean written;
/* Symbol from input BFD. */
asymbol *sym;
};
/* Generic linker hash table. */
struct generic_link_hash_table
{
struct bfd_link_hash_table root;
};
/* Look up an entry in a generic link hash table. */
#define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \
((struct generic_link_hash_entry *) \
bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
/* Traverse a generic link hash table. */
#define _bfd_generic_link_hash_traverse(table, func, info) \
(bfd_link_hash_traverse \
(&(table)->root, \
(bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
(info)))
/* Get the generic link hash table from the info structure. This is
just a cast. */
#define _bfd_generic_hash_table(p) \
((struct generic_link_hash_table *) ((p)->hash))
/* The generic linker reads in the asymbol structures for an input BFD
and keeps them in the outsymbol and symcount fields. */
#define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols)
#define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount)
/* Add the symbols of input_bfd to the symbols being built for
output_bfd. */
extern bfd_boolean _bfd_generic_link_output_symbols
(bfd *, bfd *, struct bfd_link_info *, size_t *);
/* This structure is used to pass information to
_bfd_generic_link_write_global_symbol, which may be called via
_bfd_generic_link_hash_traverse. */
struct generic_write_global_symbol_info
{
struct bfd_link_info *info;
bfd *output_bfd;
size_t *psymalloc;
};
/* Write out a single global symbol. This is expected to be called
via _bfd_generic_link_hash_traverse. The second argument must
actually be a struct generic_write_global_symbol_info *. */
extern bfd_boolean _bfd_generic_link_write_global_symbol
(struct generic_link_hash_entry *, void *);
/* Generic link hash table entry creation routine. */
struct bfd_hash_entry *_bfd_generic_link_hash_newfunc
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
#endif
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