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075caafd | 1 | /* BFD COFF object file private structure. |
beee31b1 | 2 | Copyright (C) 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc. |
075caafd ILT |
3 | Written by 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 | |
beee31b1 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
075caafd | 20 | |
69645d10 | 21 | #include "bfdlink.h" |
075caafd ILT |
22 | |
23 | /* Object file tdata; access macros */ | |
24 | ||
25 | #define coff_data(bfd) ((bfd)->tdata.coff_obj_data) | |
26 | #define exec_hdr(bfd) (coff_data(bfd)->hdr) | |
beee31b1 | 27 | #define obj_pe(bfd) (coff_data(bfd)->pe) |
075caafd ILT |
28 | #define obj_symbols(bfd) (coff_data(bfd)->symbols) |
29 | #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos) | |
30 | ||
31 | #define obj_relocbase(bfd) (coff_data(bfd)->relocbase) | |
32 | #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments) | |
326e32d7 | 33 | #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count) |
075caafd ILT |
34 | #define obj_convert(bfd) (coff_data(bfd)->conversion_table) |
35 | #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size) | |
075caafd | 36 | |
69645d10 | 37 | #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms) |
beee31b1 | 38 | #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms) |
69645d10 | 39 | #define obj_coff_strings(bfd) (coff_data (bfd)->strings) |
beee31b1 | 40 | #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings) |
69645d10 | 41 | #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes) |
075caafd ILT |
42 | |
43 | /* `Tdata' information kept for COFF files. */ | |
44 | ||
45 | typedef struct coff_tdata | |
46 | { | |
47 | struct coff_symbol_struct *symbols; /* symtab for input bfd */ | |
48 | unsigned int *conversion_table; | |
49 | int conv_table_size; | |
50 | file_ptr sym_filepos; | |
51 | ||
075caafd | 52 | struct coff_ptr_struct *raw_syments; |
075caafd | 53 | unsigned int raw_syment_count; |
075caafd ILT |
54 | |
55 | /* These are only valid once writing has begun */ | |
56 | long int relocbase; | |
57 | ||
58 | /* These members communicate important constants about the symbol table | |
59 | to GDB's symbol-reading code. These `constants' unfortunately vary | |
60 | from coff implementation to implementation... */ | |
61 | unsigned local_n_btmask; | |
62 | unsigned local_n_btshft; | |
63 | unsigned local_n_tmask; | |
64 | unsigned local_n_tshift; | |
65 | unsigned local_symesz; | |
66 | unsigned local_auxesz; | |
67 | unsigned local_linesz; | |
69645d10 | 68 | |
beee31b1 SC |
69 | /* The unswapped external symbols. May be NULL. Read by |
70 | _bfd_coff_get_external_symbols. */ | |
69645d10 | 71 | PTR external_syms; |
beee31b1 SC |
72 | /* If this is true, the external_syms may not be freed. */ |
73 | boolean keep_syms; | |
74 | ||
75 | /* The string table. May be NULL. Read by | |
76 | _bfd_coff_read_string_table. */ | |
69645d10 | 77 | char *strings; |
beee31b1 SC |
78 | /* If this is true, the strings may not be freed. */ |
79 | boolean keep_strings; | |
80 | ||
81 | /* is this a PE format coff file */ | |
82 | int pe; | |
83 | /* Used by the COFF backend linker. */ | |
69645d10 | 84 | struct coff_link_hash_entry **sym_hashes; |
beee31b1 SC |
85 | |
86 | struct bfd_link_info *link_info; | |
075caafd ILT |
87 | } coff_data_type; |
88 | ||
beee31b1 SC |
89 | /* Tdata for pe image files. */ |
90 | typedef struct pe_tdata | |
91 | { | |
92 | coff_data_type coff; | |
93 | struct internal_extra_pe_aouthdr pe_opthdr; | |
94 | int dll; | |
95 | int has_reloc_section; | |
96 | } pe_data_type; | |
97 | ||
98 | #define pe_data(bfd) ((bfd)->tdata.pe_obj_data) | |
99 | ||
100 | ||
075caafd ILT |
101 | /* We take the address of the first element of a asymbol to ensure that the |
102 | * macro is only ever applied to an asymbol. */ | |
103 | #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd))) | |
104 | ||
beee31b1 SC |
105 | /* The used_by_bfd field of a section may be set to a pointer to this |
106 | structure. */ | |
107 | ||
108 | struct coff_section_tdata | |
109 | { | |
110 | /* The relocs, swapped into COFF internal form. This may be NULL. */ | |
111 | struct internal_reloc *relocs; | |
112 | /* If this is true, the relocs entry may not be freed. */ | |
113 | boolean keep_relocs; | |
114 | /* The section contents. This may be NULL. */ | |
115 | bfd_byte *contents; | |
116 | /* If this is true, the contents entry may not be freed. */ | |
117 | boolean keep_contents; | |
118 | }; | |
119 | ||
120 | /* An accessor macro for the coff_section_tdata structure. */ | |
121 | #define coff_section_data(abfd, sec) \ | |
122 | ((struct coff_section_tdata *) (sec)->used_by_bfd) | |
123 | ||
69645d10 ILT |
124 | /* COFF linker hash table entries. */ |
125 | ||
126 | struct coff_link_hash_entry | |
127 | { | |
128 | struct bfd_link_hash_entry root; | |
129 | ||
130 | /* Symbol index in output file. Set to -1 initially. Set to -2 if | |
131 | there is a reloc against this symbol. */ | |
132 | long indx; | |
133 | ||
134 | /* Symbol type. */ | |
135 | unsigned short type; | |
136 | ||
137 | /* Symbol class. */ | |
138 | unsigned char class; | |
139 | ||
140 | /* Number of auxiliary entries. */ | |
141 | char numaux; | |
142 | ||
143 | /* BFD to take auxiliary entries from. */ | |
144 | bfd *auxbfd; | |
145 | ||
146 | /* Pointer to array of auxiliary entries, if any. */ | |
147 | union internal_auxent *aux; | |
148 | }; | |
149 | ||
150 | /* COFF linker hash table. */ | |
151 | ||
152 | struct coff_link_hash_table | |
153 | { | |
154 | struct bfd_link_hash_table root; | |
155 | }; | |
156 | ||
157 | /* Look up an entry in a COFF linker hash table. */ | |
158 | ||
159 | #define coff_link_hash_lookup(table, string, create, copy, follow) \ | |
160 | ((struct coff_link_hash_entry *) \ | |
161 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
162 | (copy), (follow))) | |
163 | ||
164 | /* Traverse a COFF linker hash table. */ | |
165 | ||
166 | #define coff_link_hash_traverse(table, func, info) \ | |
167 | (bfd_link_hash_traverse \ | |
168 | (&(table)->root, \ | |
169 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ | |
170 | (info))) | |
171 | ||
172 | /* Get the COFF linker hash table from a link_info structure. */ | |
173 | ||
174 | #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash)) | |
175 | ||
075caafd | 176 | /* Functions in coffgen.c. */ |
69645d10 | 177 | extern const bfd_target *coff_object_p PARAMS ((bfd *)); |
075caafd | 178 | extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int)); |
326e32d7 ILT |
179 | extern long coff_get_symtab_upper_bound PARAMS ((bfd *)); |
180 | extern long coff_get_symtab PARAMS ((bfd *, asymbol **)); | |
181 | extern int coff_count_linenumbers PARAMS ((bfd *)); | |
075caafd | 182 | extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *)); |
beee31b1 | 183 | extern boolean coff_renumber_symbols PARAMS ((bfd *, int *)); |
075caafd | 184 | extern void coff_mangle_symbols PARAMS ((bfd *)); |
69645d10 | 185 | extern boolean coff_write_symbols PARAMS ((bfd *)); |
326e32d7 | 186 | extern boolean coff_write_linenumbers PARAMS ((bfd *)); |
075caafd ILT |
187 | extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *)); |
188 | extern asymbol *coff_section_symbol PARAMS ((bfd *, char *)); | |
beee31b1 SC |
189 | extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *)); |
190 | extern const char *_bfd_coff_read_string_table PARAMS ((bfd *)); | |
191 | extern boolean _bfd_coff_free_symbols PARAMS ((bfd *)); | |
075caafd | 192 | extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *)); |
326e32d7 | 193 | extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr)); |
075caafd ILT |
194 | extern asymbol *coff_make_empty_symbol PARAMS ((bfd *)); |
195 | extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *, | |
196 | bfd_print_symbol_type how)); | |
326e32d7 ILT |
197 | extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *, |
198 | symbol_info *ret)); | |
199 | extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR, | |
200 | unsigned long)); | |
075caafd ILT |
201 | extern boolean coff_find_nearest_line PARAMS ((bfd *, |
202 | asection *, | |
203 | asymbol **, | |
204 | bfd_vma offset, | |
205 | CONST char **filename_ptr, | |
206 | CONST char **functionname_ptr, | |
207 | unsigned int *line_ptr)); | |
208 | extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc)); | |
326e32d7 ILT |
209 | extern boolean bfd_coff_reloc16_relax_section |
210 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); | |
075caafd | 211 | extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents |
326e32d7 ILT |
212 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, |
213 | bfd_byte *, boolean relocateable, asymbol **)); | |
075caafd | 214 | extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *, |
326e32d7 ILT |
215 | struct bfd_link_info *, |
216 | asection *)); | |
217 | extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip, | |
218 | asection *input_section, | |
219 | bfd_vma val)); | |
075caafd | 220 | |
69645d10 ILT |
221 | /* Functions in cofflink.c. */ |
222 | ||
223 | extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create | |
224 | PARAMS ((bfd *)); | |
225 | extern boolean _bfd_coff_link_add_symbols | |
226 | PARAMS ((bfd *, struct bfd_link_info *)); | |
227 | extern boolean _bfd_coff_final_link | |
228 | PARAMS ((bfd *, struct bfd_link_info *)); | |
beee31b1 SC |
229 | extern struct internal_reloc *_bfd_coff_read_internal_relocs |
230 | PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean, | |
231 | struct internal_reloc *)); | |
232 | extern boolean _bfd_coff_generic_relocate_section | |
233 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
234 | struct internal_reloc *, struct internal_syment *, asection **)); | |
69645d10 | 235 | |
075caafd ILT |
236 | /* And more taken from the source .. */ |
237 |