1 /* genlink.h -- interface to the BFD generic linker 2 Copyright (C) 1993-2016 Free Software Foundation, Inc. 3 Written by Ian Lance Taylor, Cygnus Support. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 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. 11 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. 16 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. */ 21 22 #ifndef GENLINK_H 23 #define GENLINK_H 24 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 33 actually needed. */ 34 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. */ 39 40 /* Generic linker hash table entries. */ 41 42 struct generic_link_hash_entry 43 { 44 struct bfd_link_hash_entry root; 45 /* Whether this symbol has been written out. */ 46 bfd_boolean written; 47 /* Symbol from input BFD. */ 48 asymbol *sym; 49 }; 50 51 /* Generic linker hash table. */ 52 53 struct generic_link_hash_table 54 { 55 struct bfd_link_hash_table root; 56 }; 57 58 /* Look up an entry in a generic link hash table. */ 59 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))) 63 64 /* Traverse a generic link hash table. */ 65 66 #define _bfd_generic_link_hash_traverse(table, func, info) \ 67 (bfd_link_hash_traverse \ 68 (&(table)->root, \ 69 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ 70 (info))) 71 72 /* Get the generic link hash table from the info structure. This is 73 just a cast. */ 74 75 #define _bfd_generic_hash_table(p) \ 76 ((struct generic_link_hash_table *) ((p)->hash)) 77 78 /* The generic linker reads in the asymbol structures for an input BFD 79 and keeps them in the outsymbol and symcount fields. */ 80 81 #define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols) 82 #define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount) 83 84 /* Add the symbols of input_bfd to the symbols being built for 85 output_bfd. */ 86 extern bfd_boolean _bfd_generic_link_output_symbols 87 (bfd *, bfd *, struct bfd_link_info *, size_t *); 88 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. */ 92 93 struct generic_write_global_symbol_info 94 { 95 struct bfd_link_info *info; 96 bfd *output_bfd; 97 size_t *psymalloc; 98 }; 99 100 /* 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 bfd_boolean _bfd_generic_link_write_global_symbol 104 (struct generic_link_hash_entry *, void *); 105 106 /* 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 *); 109 110 #endif 111
