1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 /* Object file tdata; access macros */
25 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
26 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
27 #define obj_pe(bfd) (coff_data(bfd)->pe)
28 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
29 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
31 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
32 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
33 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
34 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
35 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
37 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
38 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
39 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
40 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
41 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
43 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
45 /* `Tdata' information kept for COFF files. */
47 typedef struct coff_tdata
49 struct coff_symbol_struct
*symbols
; /* symtab for input bfd */
50 unsigned int *conversion_table
;
54 struct coff_ptr_struct
*raw_syments
;
55 unsigned int raw_syment_count
;
57 /* These are only valid once writing has begun */
60 /* These members communicate important constants about the symbol table
61 to GDB's symbol-reading code. These `constants' unfortunately vary
62 from coff implementation to implementation... */
63 unsigned local_n_btmask
;
64 unsigned local_n_btshft
;
65 unsigned local_n_tmask
;
66 unsigned local_n_tshift
;
67 unsigned local_symesz
;
68 unsigned local_auxesz
;
69 unsigned local_linesz
;
71 /* The unswapped external symbols. May be NULL. Read by
72 _bfd_coff_get_external_symbols. */
74 /* If this is true, the external_syms may not be freed. */
77 /* The string table. May be NULL. Read by
78 _bfd_coff_read_string_table. */
80 /* If this is true, the strings may not be freed. */
83 /* is this a PE format coff file */
85 /* Used by the COFF backend linker. */
86 struct coff_link_hash_entry
**sym_hashes
;
88 /* used by the pe linker for PowerPC */
89 int *local_toc_sym_map
;
91 struct bfd_link_info
*link_info
;
94 /* Tdata for pe image files. */
95 typedef struct pe_tdata
98 struct internal_extra_pe_aouthdr pe_opthdr
;
100 int has_reloc_section
;
101 boolean (*in_reloc_p
) PARAMS((bfd
*, reloc_howto_type
*));
105 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
107 /* Tdata for XCOFF files. */
111 /* Basic COFF information. */
114 /* True if a large a.out header should be generated. */
115 boolean full_aouthdr
;
120 /* Section holding TOC. */
121 asection
*toc_section
;
123 /* Section holding entry point. */
124 asection
*entry_section
;
126 /* .text alignment from optional header. */
127 int text_align_power
;
129 /* .data alignment from optional header. */
130 int data_align_power
;
132 /* modtype from optional header. */
135 /* cputype from optional header. */
138 /* maxdata from optional header. */
139 bfd_size_type maxdata
;
141 /* maxstack from optional header. */
142 bfd_size_type maxstack
;
144 /* Used by the XCOFF backend linker. */
146 unsigned long *debug_indices
;
147 unsigned int import_file_id
;
150 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
152 /* We take the address of the first element of a asymbol to ensure that the
153 * macro is only ever applied to an asymbol. */
154 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
156 /* The used_by_bfd field of a section may be set to a pointer to this
159 struct coff_section_tdata
161 /* The relocs, swapped into COFF internal form. This may be NULL. */
162 struct internal_reloc
*relocs
;
163 /* If this is true, the relocs entry may not be freed. */
165 /* The section contents. This may be NULL. */
167 /* If this is true, the contents entry may not be freed. */
168 boolean keep_contents
;
169 /* Information cached by coff_find_nearest_line. */
172 const char *function
;
174 /* Available for individual backends. */
178 /* An accessor macro for the coff_section_tdata structure. */
179 #define coff_section_data(abfd, sec) \
180 ((struct coff_section_tdata *) (sec)->used_by_bfd)
182 /* Tdata for sections in XCOFF files. This is used by the linker. */
184 struct xcoff_section_tdata
186 /* Used for XCOFF csects created by the linker; points to the real
187 XCOFF section which contains this csect. */
189 /* The lineno_count field for the enclosing section, because we are
190 going to clobber it there. */
191 unsigned int lineno_count
;
192 /* The first and one past the last symbol indices for symbols used
194 unsigned long first_symndx
;
195 unsigned long last_symndx
;
198 /* An accessor macro the xcoff_section_tdata structure. */
199 #define xcoff_section_data(abfd, sec) \
200 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
202 /* COFF linker hash table entries. */
204 struct coff_link_hash_entry
206 struct bfd_link_hash_entry root
;
208 /* Symbol index in output file. Set to -1 initially. Set to -2 if
209 there is a reloc against this symbol. */
218 /* Number of auxiliary entries. */
221 /* BFD to take auxiliary entries from. */
224 /* Pointer to array of auxiliary entries, if any. */
225 union internal_auxent
*aux
;
227 /* If this symbol requires an entry in the table of contents, the
228 processor specific backend uses this field to hold the offset
229 into the .toc section. */
233 /* COFF linker hash table. */
235 struct coff_link_hash_table
237 struct bfd_link_hash_table root
;
240 /* Look up an entry in a COFF linker hash table. */
242 #define coff_link_hash_lookup(table, string, create, copy, follow) \
243 ((struct coff_link_hash_entry *) \
244 bfd_link_hash_lookup (&(table)->root, (string), (create), \
247 /* Traverse a COFF linker hash table. */
249 #define coff_link_hash_traverse(table, func, info) \
250 (bfd_link_hash_traverse \
252 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
255 /* Get the COFF linker hash table from a link_info structure. */
257 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
259 /* Functions in coffgen.c. */
260 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
261 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
262 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
263 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
264 extern int coff_count_linenumbers
PARAMS ((bfd
*));
265 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
266 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
267 extern void coff_mangle_symbols
PARAMS ((bfd
*));
268 extern boolean coff_write_symbols
PARAMS ((bfd
*));
269 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
270 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
271 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
272 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
273 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
274 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
275 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
276 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
277 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
278 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
279 bfd_print_symbol_type how
));
280 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
282 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
284 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
288 CONST
char **filename_ptr
,
289 CONST
char **functionname_ptr
,
290 unsigned int *line_ptr
));
291 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
292 extern boolean bfd_coff_reloc16_relax_section
293 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
294 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
295 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
296 bfd_byte
*, boolean relocateable
, asymbol
**));
297 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
298 struct bfd_link_info
*,
300 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
301 asection
*input_section
,
304 /* Functions in cofflink.c. */
306 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
307 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
308 extern boolean _bfd_coff_link_hash_table_init
309 PARAMS ((struct coff_link_hash_table
*, bfd
*,
310 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
311 struct bfd_hash_table
*,
313 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
315 extern const char *_bfd_coff_internal_syment_name
316 PARAMS ((bfd
*, const struct internal_syment
*, char *));
317 extern boolean _bfd_coff_link_add_symbols
318 PARAMS ((bfd
*, struct bfd_link_info
*));
319 extern boolean _bfd_coff_final_link
320 PARAMS ((bfd
*, struct bfd_link_info
*));
321 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
322 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
323 struct internal_reloc
*));
324 extern boolean _bfd_coff_generic_relocate_section
325 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
326 struct internal_reloc
*, struct internal_syment
*, asection
**));
328 #define coff_get_section_contents_in_window \
329 _bfd_generic_get_section_contents_in_window
331 /* Functions in xcofflink.c. */
333 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
335 extern boolean _bfd_xcoff_bfd_link_add_symbols
336 PARAMS ((bfd
*, struct bfd_link_info
*));
337 extern boolean _bfd_xcoff_bfd_final_link
338 PARAMS ((bfd
*, struct bfd_link_info
*));
339 extern boolean _bfd_ppc_xcoff_relocate_section
340 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
341 struct internal_reloc
*, struct internal_syment
*, asection
**));
343 /* And more taken from the source .. */