1 /* BFD back-end data structures for a.out (and similar) files.
2 Copyright (C) 1990-2023 Free Software Foundation, Inc.
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 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 LIBAOUT_H
23 #define LIBAOUT_H
24
25 /* We try to encapsulate the differences in the various a.out file
26 variants in a few routines, and otherwise share large masses of code.
27 This means we only have to fix bugs in one place, most of the time. */
28
29 #include "bfdlink.h"
30
31 /* Macros for accessing components in an aout header. */
32
33 #define H_PUT_64 bfd_h_put_64
34 #define H_PUT_32 bfd_h_put_32
35 #define H_PUT_16 bfd_h_put_16
36 #define H_PUT_8 bfd_h_put_8
37 #define H_PUT_S64 bfd_h_put_signed_64
38 #define H_PUT_S32 bfd_h_put_signed_32
39 #define H_PUT_S16 bfd_h_put_signed_16
40 #define H_PUT_S8 bfd_h_put_signed_8
41 #define H_GET_64 bfd_h_get_64
42 #define H_GET_32 bfd_h_get_32
43 #define H_GET_16 bfd_h_get_16
44 #define H_GET_8 bfd_h_get_8
45 #define H_GET_S64 bfd_h_get_signed_64
46 #define H_GET_S32 bfd_h_get_signed_32
47 #define H_GET_S16 bfd_h_get_signed_16
48 #define H_GET_S8 bfd_h_get_signed_8
49
50 /* Parameterize the a.out code based on whether it is being built
51 for a 32-bit architecture or a 64-bit architecture. */
52 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
53 remove whitespace added here, and thus will fail to concatenate
54 the tokens. */
55 #if ARCH_SIZE==64
56 #define GET_WORD H_GET_64
57 #define GET_SWORD H_GET_S64
58 #define GET_MAGIC H_GET_32
59 #define PUT_WORD H_PUT_64
60 #define PUT_MAGIC H_PUT_32
61 #ifndef NAME
62 #define NAME(x,y) CONCAT3 (x,_64_,y)
63 #endif
64 #define JNAME(x) CONCAT2 (x,_64)
65 #define BYTES_IN_WORD 8
66 #else
67 #if ARCH_SIZE==16
68 #define GET_WORD H_GET_16
69 #define GET_SWORD H_GET_S16
70 #define GET_MAGIC H_GET_16
71 #define PUT_WORD H_PUT_16
72 #define PUT_MAGIC H_PUT_16
73 #ifndef NAME
74 #define NAME(x,y) CONCAT3 (x,_16_,y)
75 #endif
76 #define JNAME(x) CONCAT2 (x,_16)
77 #define BYTES_IN_WORD 2
78 #else /* ARCH_SIZE == 32 */
79 #define GET_WORD H_GET_32
80 #define GET_SWORD H_GET_S32
81 #define GET_MAGIC H_GET_32
82 #define PUT_WORD H_PUT_32
83 #define PUT_MAGIC H_PUT_32
84 #ifndef NAME
85 #define NAME(x,y) CONCAT3 (x,_32_,y)
86 #endif
87 #define JNAME(x) CONCAT2 (x,_32)
88 #define BYTES_IN_WORD 4
89 #endif /* ARCH_SIZE==32 */
90 #endif /* ARCH_SIZE==64 */
91
92 /* Declare at file level, since used in parameter lists, which have
93 weird scope. */
94 struct external_exec;
95 struct external_nlist;
96 struct reloc_ext_external;
97 struct reloc_std_external;
98
99 /* a.out backend linker hash table entries. */
100
101 struct aout_link_hash_entry
102 {
103 struct bfd_link_hash_entry root;
104 /* Whether this symbol has been written out. */
105 bool written;
106 /* Symbol index in output file. */
107 int indx;
108 };
109
110 /* a.out backend linker hash table. */
111
112 struct aout_link_hash_table
113 {
114 struct bfd_link_hash_table root;
115 };
116
117 /* Look up an entry in an a.out link hash table. */
118
119 #define aout_link_hash_lookup(table, string, create, copy, follow) \
120 ((struct aout_link_hash_entry *) \
121 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
122
123 /* Traverse an a.out link hash table. */
124
125 #define aout_link_hash_traverse(table, func, info) \
126 (bfd_link_hash_traverse \
127 (&(table)->root, \
128 (bool (*) (struct bfd_link_hash_entry *, void *)) (func), \
129 (info)))
130
131 /* Get the a.out link hash table from the info structure. This is
132 just a cast. */
133
134 #define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
135
136 /* Back-end information for various a.out targets. */
137 struct aout_backend_data
138 {
139 /* Are ZMAGIC files mapped contiguously? If so, the text section may
140 need more padding, if the segment size (granularity for memory access
141 control) is larger than the page size. */
142 unsigned char zmagic_mapped_contiguous;
143 /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
144 text section, which starts immediately after the file header.
145 If not, the text section starts on the next page. */
146 unsigned char text_includes_header;
147
148 /* If this flag is set, then if the entry address is not in the
149 first SEGMENT_SIZE bytes of the text section, it is taken to be
150 the address of the start of the text section. This can be useful
151 for kernels. */
152 unsigned char entry_is_text_address;
153
154 /* The value to pass to N_SET_FLAGS. */
155 unsigned char exec_hdr_flags;
156
157 /* If the text section VMA isn't specified, and we need an absolute
158 address, use this as the default. If we're producing a relocatable
159 file, zero is always used. */
160 /* ?? Perhaps a callback would be a better choice? Will this do anything
161 reasonable for a format that handles multiple CPUs with different
162 load addresses for each? */
163 bfd_vma default_text_vma;
164
165 /* Callback for setting the page and segment sizes, if they can't be
166 trivially determined from the architecture. */
167 bool (*set_sizes) (bfd *);
168
169 /* zmagic files only. For go32, the length of the exec header contributes
170 to the size of the text section in the file for alignment purposes but
171 does *not* get counted in the length of the text section. */
172 unsigned char exec_header_not_counted;
173
174 /* Callback from the add symbols phase of the linker code to handle
175 a dynamic object. */
176 bool (*add_dynamic_symbols)
177 (bfd *, struct bfd_link_info *, struct external_nlist **,
178 bfd_size_type *, char **);
179
180 /* Callback from the add symbols phase of the linker code to handle
181 adding a single symbol to the global linker hash table. */
182 bool (*add_one_symbol)
183 (struct bfd_link_info *, bfd *, const char *, flagword,
184 asection *, bfd_vma, const char *, bool, bool,
185 struct bfd_link_hash_entry **);
186
187 /* Called to handle linking a dynamic object. */
188 bool (*link_dynamic_object)
189 (struct bfd_link_info *, bfd *);
190
191 /* Called for each global symbol being written out by the linker.
192 This should write out the dynamic symbol information. */
193 bool (*write_dynamic_symbol)
194 (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
195
196 /* If this callback is not NULL, the linker calls it for each reloc.
197 RELOC is a pointer to the unswapped reloc. If *SKIP is set to
198 TRUE, the reloc will be skipped. *RELOCATION may be changed to
199 change the effects of the relocation. */
200 bool (*check_dynamic_reloc)
201 (struct bfd_link_info *info, bfd *input_bfd,
202 asection *input_section, struct aout_link_hash_entry *h,
203 void * reloc, bfd_byte *contents, bool *skip,
204 bfd_vma *relocation);
205
206 /* Called at the end of a link to finish up any dynamic linking
207 information. */
208 bool (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
209 };
210 #define aout_backend_info(abfd) \
211 ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
212
213 /* This is the layout in memory of a "struct exec" while we process it.
214 All 'lengths' are given as a number of bytes.
215 All 'alignments' are for relinkable files only; an alignment of
216 'n' indicates the corresponding segment must begin at an
217 address that is a multiple of (2**n). */
218
219 struct internal_exec
220 {
221 long a_info; /* Magic number and flags, packed. */
222 bfd_vma a_text; /* Length of text, in bytes. */
223 bfd_vma a_data; /* Length of data, in bytes. */
224 bfd_vma a_bss; /* Length of uninitialized data area in mem. */
225 bfd_vma a_syms; /* Length of symbol table data in file. */
226 bfd_vma a_entry; /* Start address. */
227 bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
228 bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
229 /* Added for i960 */
230 bfd_vma a_tload; /* Text runtime load address. */
231 bfd_vma a_dload; /* Data runtime load address. */
232 unsigned char a_talign; /* Alignment of text segment. */
233 unsigned char a_dalign; /* Alignment of data segment. */
234 unsigned char a_balign; /* Alignment of bss segment. */
235 char a_relaxable; /* Enough info for linker relax. */
236 };
237
238 /* Magic number is written
239 < MSB >
240 3130292827262524232221201918171615141312111009080706050403020100
241 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
242
243 /* Magic number for NetBSD is
244 <MSB >
245 3130292827262524232221201918171615141312111009080706050403020100
246 < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
247
248 enum machine_type
249 {
250 M_UNKNOWN = 0,
251 M_68010 = 1,
252 M_68020 = 2,
253 M_SPARC = 3,
254 /* Skip a bunch so we don't run into any of SUN's numbers. */
255 /* Make these up for the ns32k. */
256 M_NS32032 = (64), /* NS32032 running ? */
257 M_NS32532 = (64 + 5), /* NS32532 running mach. */
258 M_386 = 100,
259 M_29K = 101, /* AMD 29000. */
260 M_386_DYNIX = 102, /* Sequent running dynix. */
261 M_ARM = 103, /* Advanced Risc Machines ARM. */
262 M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
263 M_386_NETBSD = 134, /* NetBSD/i386 binary. */
264 M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
265 M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
266 M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
267 M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
268 M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
269 M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
270 M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
271 M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
272 M_SPARCLET_1 = 147, /* 0x93, reserved. */
273 M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
274 M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
275 M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
276 M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
277 M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
278 M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
279 M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
280 M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
281 M_SPARCLET_2 = 163, /* 0xa3, reserved. */
282 M_SPARCLET_3 = 179, /* 0xb3, reserved. */
283 M_SPARCLET_4 = 195, /* 0xc3, reserved. */
284 M_HP200 = 200, /* HP 200 (68010) BSD binary. */
285 M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
286 M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
287 M_SPARCLET_5 = 211, /* 0xd3, reserved. */
288 M_SPARCLET_6 = 227, /* 0xe3, reserved. */
289 /*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
290 M_SPARCLITE_LE = 243,
291 M_CRIS = 255 /* Axis CRIS binary. */
292 };
293
294 #define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000)
295
296 #ifndef N_MAGIC
297 # define N_MAGIC(execp) ((execp)->a_info & 0xffff)
298 #endif
299
300 #ifndef N_MACHTYPE
301 # define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff))
302 #endif
303
304 #ifndef N_FLAGS
305 # define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff)
306 #endif
307
308 #ifndef N_SET_INFO
309 # define N_SET_INFO(execp, magic, type, flags) \
310 ((execp)->a_info = ((magic) & 0xffff) \
311 | (((int)(type) & 0xff) << 16) \
312 | (((flags) & 0xffu) << 24))
313 #endif
314
315 #ifndef N_SET_DYNAMIC
316 # define N_SET_DYNAMIC(execp, dynamic) \
317 ((execp)->a_info = (dynamic) ? (long) ((execp)->a_info | 0x80000000) : \
318 ((execp)->a_info & 0x7fffffff))
319 #endif
320
321 #ifndef N_SET_MAGIC
322 # define N_SET_MAGIC(execp, magic) \
323 ((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff)))
324 #endif
325
326 #ifndef N_SET_MACHTYPE
327 # define N_SET_MACHTYPE(execp, machtype) \
328 ((execp)->a_info = \
329 ((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16))
330 #endif
331
332 #ifndef N_SET_FLAGS
333 # define N_SET_FLAGS(execp, flags) \
334 ((execp)->a_info = \
335 ((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 24))
336 #endif
337
338 typedef struct aout_symbol
339 {
340 asymbol symbol;
341 short desc;
342 char other;
343 unsigned char type;
344 } aout_symbol_type;
345
346 /* The `tdata' struct for all a.out-like object file formats.
347 Various things depend on this struct being around any time an a.out
348 file is being handled. An example is dbxread.c in GDB. */
349
350 enum aout_subformat {
351 default_format = 0,
352 /* Used on HP 9000/300 running HP/UX. */
353 gnu_encap_format,
354 /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
355 q_magic_format
356 };
357
358 enum aout_magic {
359 undecided_magic = 0,
360 z_magic,
361 o_magic,
362 n_magic,
363 i_magic
364 };
365
366 struct aoutdata
367 {
368 struct internal_exec *hdr; /* Exec file header. */
369 aout_symbol_type *symbols; /* Symtab for input bfd. */
370
371 /* For ease, we do this. */
372 asection *textsec;
373 asection *datasec;
374 asection *bsssec;
375
376 /* We remember these offsets so that after check_file_format, we have
377 no dependencies on the particular format of the exec_hdr. */
378 file_ptr sym_filepos;
379 file_ptr str_filepos;
380
381 /* Size of a relocation entry in external form. */
382 unsigned reloc_entry_size;
383
384 /* Size of a symbol table entry in external form. */
385 unsigned symbol_entry_size;
386
387 /* Page size - needed for alignment of demand paged files. */
388 unsigned long page_size;
389
390 /* Segment size - needed for alignment of demand paged files. */
391 unsigned long segment_size;
392
393 /* Zmagic disk block size - need to align the start of the text
394 section in ZMAGIC binaries. Normally the same as page_size. */
395 unsigned long zmagic_disk_block_size;
396
397 unsigned exec_bytes_size;
398 unsigned vma_adjusted : 1;
399
400 /* Used when a bfd supports several highly similar formats. */
401 enum aout_subformat subformat;
402
403 enum aout_magic magic;
404
405 /* A buffer for find_nearest_line. */
406 char *line_buf;
407
408 /* The external symbol information. */
409 struct external_nlist *external_syms;
410 bfd_size_type external_sym_count;
411 bfd_window sym_window;
412 char *external_strings;
413 bfd_size_type external_string_size;
414 bfd_window string_window;
415 struct aout_link_hash_entry **sym_hashes;
416
417 /* A pointer for shared library information. */
418 void * dynamic_info;
419
420 /* A mapping from local symbols to offsets into the global offset
421 table, used when linking on SunOS. This is indexed by the symbol
422 index. */
423 bfd_vma *local_got_offsets;
424 };
425
426 struct aout_data_struct
427 {
428 struct aoutdata a;
429 struct internal_exec e;
430 };
431
432 #define adata(bfd) ((bfd)->tdata.aout_data->a)
433 #define exec_hdr(bfd) (adata (bfd).hdr)
434 #define obj_aout_symbols(bfd) (adata (bfd).symbols)
435 #define obj_textsec(bfd) (adata (bfd).textsec)
436 #define obj_datasec(bfd) (adata (bfd).datasec)
437 #define obj_bsssec(bfd) (adata (bfd).bsssec)
438 #define obj_sym_filepos(bfd) (adata (bfd).sym_filepos)
439 #define obj_str_filepos(bfd) (adata (bfd).str_filepos)
440 #define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size)
441 #define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size)
442 #define obj_aout_subformat(bfd) (adata (bfd).subformat)
443 #define obj_aout_external_syms(bfd) (adata (bfd).external_syms)
444 #define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
445 #define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
446 #define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
447 #define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
448 #define obj_aout_string_window(bfd) (adata (bfd).string_window)
449 #define obj_aout_sym_hashes(bfd) (adata (bfd).sym_hashes)
450 #define obj_aout_dynamic_info(bfd) (adata (bfd).dynamic_info)
451
452 /* We take the address of the first element of an asymbol to ensure that the
453 macro is only ever applied to an asymbol. */
454 #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
455
456 /* Information we keep for each a.out section. This is currently only
457 used by the a.out backend linker. */
458
459 struct aout_section_data_struct
460 {
461 /* The unswapped relocation entries for this section. */
462 void * relocs;
463 };
464
465 #define aout_section_data(s) \
466 ((struct aout_section_data_struct *) (s)->used_by_bfd)
467
468 #define set_aout_section_data(s,v) \
469 ((s)->used_by_bfd = (void *)&(v)->relocs)
470
471 /* Prototype declarations for functions defined in aoutx.h. */
472
473 extern bool NAME (aout, squirt_out_relocs)
474 (bfd *, asection *);
475
476 extern bool NAME (aout, make_sections)
477 (bfd *);
478
479 extern bfd_cleanup NAME (aout, some_aout_object_p)
480 (bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *));
481
482 extern bool NAME (aout, mkobject)
483 (bfd *);
484
485 extern enum machine_type NAME (aout, machine_type)
486 (enum bfd_architecture, unsigned long, bool *);
487
488 extern bool NAME (aout, set_arch_mach)
489 (bfd *, enum bfd_architecture, unsigned long);
490
491 extern bool NAME (aout, new_section_hook)
492 (bfd *, asection *);
493
494 extern bool NAME (aout, set_section_contents)
495 (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
496
497 extern asymbol * NAME (aout, make_empty_symbol)
498 (bfd *);
499
500 extern bool NAME (aout, translate_symbol_table)
501 (bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
502 char *, bfd_size_type, bool);
503
504 extern bool NAME (aout, slurp_symbol_table)
505 (bfd *);
506
507 extern bool NAME (aout, write_syms)
508 (bfd *);
509
510 extern void NAME (aout, reclaim_symbol_table)
511 (bfd *);
512
513 extern long NAME (aout, get_symtab_upper_bound)
514 (bfd *);
515
516 extern long NAME (aout, canonicalize_symtab)
517 (bfd *, asymbol **);
518
519 extern void NAME (aout, swap_ext_reloc_in)
520 (bfd *, struct reloc_ext_external *, arelent *, asymbol **,
521 bfd_size_type);
522
523 extern void NAME (aout, swap_std_reloc_in)
524 (bfd *, struct reloc_std_external *, arelent *, asymbol **,
525 bfd_size_type);
526
527 extern reloc_howto_type * NAME (aout, reloc_type_lookup)
528 (bfd *, bfd_reloc_code_real_type);
529
530 extern reloc_howto_type * NAME (aout, reloc_name_lookup)
531 (bfd *, const char *);
532
533 extern bool NAME (aout, slurp_reloc_table)
534 (bfd *, sec_ptr, asymbol **);
535
536 extern long NAME (aout, canonicalize_reloc)
537 (bfd *, sec_ptr, arelent **, asymbol **);
538
539 extern long NAME (aout, get_reloc_upper_bound)
540 (bfd *, sec_ptr);
541
542 extern void NAME (aout, reclaim_reloc)
543 (bfd *, sec_ptr);
544
545 extern alent * NAME (aout, get_lineno)
546 (bfd *, asymbol *);
547
548 extern void NAME (aout, print_symbol)
549 (bfd *, void *, asymbol *, bfd_print_symbol_type);
550
551 extern void NAME (aout, get_symbol_info)
552 (bfd *, asymbol *, symbol_info *);
553
554 extern bool NAME (aout, find_nearest_line)
555 (bfd *, asymbol **, asection *, bfd_vma,
556 const char **, const char **, unsigned int *, unsigned int *);
557
558 extern long NAME (aout, read_minisymbols)
559 (bfd *, bool, void * *, unsigned int *);
560
561 extern asymbol * NAME (aout, minisymbol_to_symbol)
562 (bfd *, bool, const void *, asymbol *);
563
564 extern int NAME (aout, sizeof_headers)
565 (bfd *, struct bfd_link_info *);
566
567 extern bool NAME (aout, adjust_sizes_and_vmas)
568 (bfd *);
569
570 extern void NAME (aout, swap_exec_header_in)
571 (bfd *, struct external_exec *, struct internal_exec *);
572
573 extern void NAME (aout, swap_exec_header_out)
574 (bfd *, struct internal_exec *, struct external_exec *);
575
576 extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
577 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
578
579 extern bool NAME (aout, link_hash_table_init)
580 (struct aout_link_hash_table *, bfd *,
581 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
582 struct bfd_hash_table *,
583 const char *),
584 unsigned int);
585
586 extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
587 (bfd *);
588
589 extern bool NAME (aout, link_add_symbols)
590 (bfd *, struct bfd_link_info *);
591
592 extern bool NAME (aout, final_link)
593 (bfd *, struct bfd_link_info *,
594 void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
595
596 extern bool NAME (aout, bfd_free_cached_info)
597 (bfd *);
598
599 #define aout_32_find_inliner_info _bfd_nosymbols_find_inliner_info
600 #if 0 /* Are these needed? */
601 #define aout_16_find_inliner_info _bfd_nosymbols_find_inliner_info
602 #define aout_64_find_inliner_info _bfd_nosymbols_find_inliner_info
603 #endif
604
605 /* A.out uses the generic versions of these routines... */
606
607 #define aout_16_get_section_contents _bfd_generic_get_section_contents
608
609 #define aout_32_get_section_contents _bfd_generic_get_section_contents
610
611 #define aout_64_get_section_contents _bfd_generic_get_section_contents
612
613 #ifndef aout_32_bfd_is_local_label_name
614 #define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
615 #endif
616
617 #ifndef aout_32_bfd_is_target_special_symbol
618 #define aout_32_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
619 #endif
620
621 #ifndef WRITE_HEADERS
622 #define WRITE_HEADERS(abfd, execp) \
623 { \
624 if (adata(abfd).magic == undecided_magic) \
625 NAME (aout, adjust_sizes_and_vmas) (abfd); \
626 \
627 execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
628 execp->a_entry = bfd_get_start_address (abfd); \
629 \
630 execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
631 obj_reloc_entry_size (abfd)); \
632 execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
633 obj_reloc_entry_size (abfd)); \
634 NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
635 \
636 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
637 || bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
638 abfd) != EXEC_BYTES_SIZE) \
639 return false; \
640 /* Now write out reloc info, followed by syms and strings. */ \
641 \
642 if (bfd_get_outsymbols (abfd) != NULL \
643 && bfd_get_symcount (abfd) != 0) \
644 { \
645 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0)\
646 return false; \
647 \
648 if (! NAME (aout, write_syms) (abfd)) \
649 return false; \
650 } \
651 \
652 if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (execp)), SEEK_SET) != 0) \
653 return false; \
654 if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd))) \
655 return false; \
656 \
657 if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp)), SEEK_SET) != 0) \
658 return false; \
659 if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
660 return false; \
661 }
662 #endif
663
664 /* Test if a read-only section can be merged with .text. This is
665 possible if:
666
667 1. Section has file contents and is read-only.
668 2. The VMA of the section is after the end of .text and before
669 the start of .data.
670 3. The image is demand-pageable (otherwise, a_text in the header
671 will not reflect the gap between .text and .data). */
672
673 #define aout_section_merge_with_text_p(abfd, sec) \
674 (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \
675 (SEC_HAS_CONTENTS | SEC_READONLY) \
676 && obj_textsec (abfd) != NULL \
677 && obj_datasec (abfd) != NULL \
678 && (sec)->vma >= (obj_textsec (abfd)->vma + \
679 obj_textsec (abfd)->size) \
680 && ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
681 && ((abfd)->flags & D_PAGED) != 0)
682
683 #endif /* ! defined (LIBAOUT_H) */