1 | /* genlink.h -- interface to the BFD generic linker |
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2 | Copyright 1993, 1994, 1996 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 | 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 an 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 an 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 | (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 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 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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