1*a9fa9459Szrj /* genlink.h -- interface to the BFD generic linker 2*a9fa9459Szrj Copyright (C) 1993-2016 Free Software Foundation, Inc. 3*a9fa9459Szrj Written by Ian Lance Taylor, Cygnus Support. 4*a9fa9459Szrj 5*a9fa9459Szrj This file is part of BFD, the Binary File Descriptor library. 6*a9fa9459Szrj 7*a9fa9459Szrj This program is free software; you can redistribute it and/or modify 8*a9fa9459Szrj it under the terms of the GNU General Public License as published by 9*a9fa9459Szrj the Free Software Foundation; either version 3 of the License, or 10*a9fa9459Szrj (at your option) any later version. 11*a9fa9459Szrj 12*a9fa9459Szrj This program is distributed in the hope that it will be useful, 13*a9fa9459Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 14*a9fa9459Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15*a9fa9459Szrj GNU General Public License for more details. 16*a9fa9459Szrj 17*a9fa9459Szrj You should have received a copy of the GNU General Public License 18*a9fa9459Szrj along with this program; if not, write to the Free Software 19*a9fa9459Szrj Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20*a9fa9459Szrj MA 02110-1301, USA. */ 21*a9fa9459Szrj 22*a9fa9459Szrj #ifndef GENLINK_H 23*a9fa9459Szrj #define GENLINK_H 24*a9fa9459Szrj 25*a9fa9459Szrj /* This header file is internal to BFD. It describes the internal 26*a9fa9459Szrj structures and functions used by the BFD generic linker, in case 27*a9fa9459Szrj any of the more specific linkers want to use or call them. Note 28*a9fa9459Szrj that some functions, such as _bfd_generic_link_hash_table_create, 29*a9fa9459Szrj are declared in libbfd.h, because they are expected to be widely 30*a9fa9459Szrj used. The functions and structures in this file will probably only 31*a9fa9459Szrj be used by a few files besides linker.c itself. In fact, this file 32*a9fa9459Szrj is not particularly complete; I have only put in the interfaces I 33*a9fa9459Szrj actually needed. */ 34*a9fa9459Szrj 35*a9fa9459Szrj /* The generic linker uses a hash table which is a derived class of 36*a9fa9459Szrj the standard linker hash table, just as the other backend specific 37*a9fa9459Szrj linkers do. Do not confuse the generic linker hash table with the 38*a9fa9459Szrj standard BFD linker hash table it is built upon. */ 39*a9fa9459Szrj 40*a9fa9459Szrj /* Generic linker hash table entries. */ 41*a9fa9459Szrj 42*a9fa9459Szrj struct generic_link_hash_entry 43*a9fa9459Szrj { 44*a9fa9459Szrj struct bfd_link_hash_entry root; 45*a9fa9459Szrj /* Whether this symbol has been written out. */ 46*a9fa9459Szrj bfd_boolean written; 47*a9fa9459Szrj /* Symbol from input BFD. */ 48*a9fa9459Szrj asymbol *sym; 49*a9fa9459Szrj }; 50*a9fa9459Szrj 51*a9fa9459Szrj /* Generic linker hash table. */ 52*a9fa9459Szrj 53*a9fa9459Szrj struct generic_link_hash_table 54*a9fa9459Szrj { 55*a9fa9459Szrj struct bfd_link_hash_table root; 56*a9fa9459Szrj }; 57*a9fa9459Szrj 58*a9fa9459Szrj /* Look up an entry in a generic link hash table. */ 59*a9fa9459Szrj 60*a9fa9459Szrj #define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \ 61*a9fa9459Szrj ((struct generic_link_hash_entry *) \ 62*a9fa9459Szrj bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow))) 63*a9fa9459Szrj 64*a9fa9459Szrj /* Traverse a generic link hash table. */ 65*a9fa9459Szrj 66*a9fa9459Szrj #define _bfd_generic_link_hash_traverse(table, func, info) \ 67*a9fa9459Szrj (bfd_link_hash_traverse \ 68*a9fa9459Szrj (&(table)->root, \ 69*a9fa9459Szrj (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ 70*a9fa9459Szrj (info))) 71*a9fa9459Szrj 72*a9fa9459Szrj /* Get the generic link hash table from the info structure. This is 73*a9fa9459Szrj just a cast. */ 74*a9fa9459Szrj 75*a9fa9459Szrj #define _bfd_generic_hash_table(p) \ 76*a9fa9459Szrj ((struct generic_link_hash_table *) ((p)->hash)) 77*a9fa9459Szrj 78*a9fa9459Szrj /* The generic linker reads in the asymbol structures for an input BFD 79*a9fa9459Szrj and keeps them in the outsymbol and symcount fields. */ 80*a9fa9459Szrj 81*a9fa9459Szrj #define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols) 82*a9fa9459Szrj #define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount) 83*a9fa9459Szrj 84*a9fa9459Szrj /* Add the symbols of input_bfd to the symbols being built for 85*a9fa9459Szrj output_bfd. */ 86*a9fa9459Szrj extern bfd_boolean _bfd_generic_link_output_symbols 87*a9fa9459Szrj (bfd *, bfd *, struct bfd_link_info *, size_t *); 88*a9fa9459Szrj 89*a9fa9459Szrj /* This structure is used to pass information to 90*a9fa9459Szrj _bfd_generic_link_write_global_symbol, which may be called via 91*a9fa9459Szrj _bfd_generic_link_hash_traverse. */ 92*a9fa9459Szrj 93*a9fa9459Szrj struct generic_write_global_symbol_info 94*a9fa9459Szrj { 95*a9fa9459Szrj struct bfd_link_info *info; 96*a9fa9459Szrj bfd *output_bfd; 97*a9fa9459Szrj size_t *psymalloc; 98*a9fa9459Szrj }; 99*a9fa9459Szrj 100*a9fa9459Szrj /* Write out a single global symbol. This is expected to be called 101*a9fa9459Szrj via _bfd_generic_link_hash_traverse. The second argument must 102*a9fa9459Szrj actually be a struct generic_write_global_symbol_info *. */ 103*a9fa9459Szrj extern bfd_boolean _bfd_generic_link_write_global_symbol 104*a9fa9459Szrj (struct generic_link_hash_entry *, void *); 105*a9fa9459Szrj 106*a9fa9459Szrj /* Generic link hash table entry creation routine. */ 107*a9fa9459Szrj struct bfd_hash_entry *_bfd_generic_link_hash_newfunc 108*a9fa9459Szrj (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); 109*a9fa9459Szrj 110*a9fa9459Szrj #endif 111