| 1 | /* genlink.h -- interface to the BFD generic linker |
| 2 | Copyright 1993 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | #ifndef GENLINK_H |
| 22 | #define GENLINK_H |
| 23 | |
| 24 | /* This header file is internal to BFD. It describes the internal |
| 25 | structures and functions used by the BFD generic linker, in case |
| 26 | any of the more specific linkers want to use or call them. Note |
| 27 | that some functions, such as _bfd_generic_link_hash_table_create, |
| 28 | are declared in libbfd.h, because they are expected to be widely |
| 29 | used. The functions and structures in this file will probably only |
| 30 | be used by a few files besides linker.c itself. In fact, this file |
| 31 | is not particularly complete; I have only put in the interfaces I |
| 32 | actually needed. */ |
| 33 | |
| 34 | /* The generic linker uses a hash table which is a derived class of |
| 35 | the standard linker hash table, just as the other backend specific |
| 36 | linkers do. Do not confuse the generic linker hash table with the |
| 37 | standard BFD linker hash table it is built upon. The generic |
| 38 | linker hash table is onl referred to in this file. */ |
| 39 | |
| 40 | /* Generic linker hash table entries. */ |
| 41 | |
| 42 | struct generic_link_hash_entry |
| 43 | { |
| 44 | struct bfd_link_hash_entry root; |
| 45 | /* Symbol from input BFD. */ |
| 46 | asymbol *sym; |
| 47 | }; |
| 48 | |
| 49 | /* Generic linker hash table. */ |
| 50 | |
| 51 | struct generic_link_hash_table |
| 52 | { |
| 53 | struct bfd_link_hash_table root; |
| 54 | }; |
| 55 | |
| 56 | /* Look up an entry in an generic link hash table. */ |
| 57 | |
| 58 | #define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \ |
| 59 | ((struct generic_link_hash_entry *) \ |
| 60 | bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow))) |
| 61 | |
| 62 | /* Traverse an generic link hash table. */ |
| 63 | |
| 64 | #define _bfd_generic_link_hash_traverse(table, func, info) \ |
| 65 | (bfd_link_hash_traverse \ |
| 66 | (&(table)->root, \ |
| 67 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ |
| 68 | (info))) |
| 69 | |
| 70 | /* Get the generic link hash table from the info structure. This is |
| 71 | just a cast. */ |
| 72 | |
| 73 | #define _bfd_generic_hash_table(p) \ |
| 74 | ((struct generic_link_hash_table *) ((p)->hash)) |
| 75 | |
| 76 | /* Add the symbols of input_bfd to the symbols being built for |
| 77 | output_bfd. */ |
| 78 | extern boolean _bfd_generic_link_output_symbols |
| 79 | PARAMS ((bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *, |
| 80 | size_t *psymalloc)); |
| 81 | |
| 82 | /* This structure is used to pass information to |
| 83 | _bfd_generic_link_write_global_symbol, which may be called via |
| 84 | _bfd_generic_link_hash_traverse. */ |
| 85 | |
| 86 | struct generic_write_global_symbol_info |
| 87 | { |
| 88 | bfd *output_bfd; |
| 89 | size_t *psymalloc; |
| 90 | }; |
| 91 | |
| 92 | /* Write out a single global symbol. This is expected to be called |
| 93 | via _bfd_generic_link_hash_traverse. The second argument must |
| 94 | actually be a struct generic_write_global_symbol_info *. */ |
| 95 | extern boolean _bfd_generic_link_write_global_symbol |
| 96 | PARAMS ((struct generic_link_hash_entry *, PTR)); |
| 97 | |
| 98 | /* Handle a bfd_indirect_link_order. */ |
| 99 | extern boolean _bfd_generic_indirect_link_order |
| 100 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 101 | struct bfd_link_order *)); |
| 102 | |
| 103 | #endif |