1 /* Define a target vector and some small routines for a variant of a.out.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #include "aout/aout64.h"
21 #include "aout/stab_gnu.h"
23 /*#include "libaout.h"*/
25 extern reloc_howto_type
* NAME(aout
,reloc_type_lookup
) ();
27 /* Set parameters about this a.out file that are machine-dependent.
28 This routine is called from some_aout_object_p just before it returns. */
30 static const bfd_target
*
34 struct internal_exec
*execp
= exec_hdr (abfd
);
35 unsigned int arch_align_power
;
36 unsigned long arch_align
;
38 /* Calculate the file positions of the parts of a newly read aout header */
39 obj_textsec (abfd
)->_raw_size
= N_TXTSIZE(*execp
);
41 /* The virtual memory addresses of the sections */
42 obj_textsec (abfd
)->vma
= N_TXTADDR(*execp
);
43 obj_datasec (abfd
)->vma
= N_DATADDR(*execp
);
44 obj_bsssec (abfd
)->vma
= N_BSSADDR(*execp
);
46 /* The file offsets of the sections */
47 obj_textsec (abfd
)->filepos
= N_TXTOFF (*execp
);
48 obj_datasec (abfd
)->filepos
= N_DATOFF (*execp
);
50 /* The file offsets of the relocation info */
51 obj_textsec (abfd
)->rel_filepos
= N_TRELOFF(*execp
);
52 obj_datasec (abfd
)->rel_filepos
= N_DRELOFF(*execp
);
54 /* The file offsets of the string table and symbol table. */
55 obj_sym_filepos (abfd
) = N_SYMOFF (*execp
);
56 obj_str_filepos (abfd
) = N_STROFF (*execp
);
58 /* Determine the architecture and machine type of the object file. */
60 SET_ARCH_MACH(abfd
, *execp
);
62 bfd_default_set_arch_mach(abfd
, DEFAULT_ARCH
, 0);
65 /* Now that we know the architecture, set the alignments of the
66 sections. This is normally done by NAME(aout,new_section_hook),
67 but when the initial sections were created the architecture had
68 not yet been set. However, for backward compatibility, we don't
69 set the alignment power any higher than as required by the size
71 arch_align_power
= bfd_get_arch_info (abfd
)->section_align_power
;
72 arch_align
= 1 << arch_align_power
;
73 if ((BFD_ALIGN (obj_textsec (abfd
)->_raw_size
, arch_align
)
74 == obj_textsec (abfd
)->_raw_size
)
75 && (BFD_ALIGN (obj_datasec (abfd
)->_raw_size
, arch_align
)
76 == obj_datasec (abfd
)->_raw_size
)
77 && (BFD_ALIGN (obj_bsssec (abfd
)->_raw_size
, arch_align
)
78 == obj_bsssec (abfd
)->_raw_size
))
80 obj_textsec (abfd
)->alignment_power
= arch_align_power
;
81 obj_datasec (abfd
)->alignment_power
= arch_align_power
;
82 obj_bsssec (abfd
)->alignment_power
= arch_align_power
;
85 /* Don't set sizes now -- can't be sure until we know arch & mach.
86 Sizes get set in set_sizes callback, later. */
88 adata(abfd
).page_size
= PAGE_SIZE
;
90 adata(abfd
).segment_size
= SEGMENT_SIZE
;
92 adata(abfd
).segment_size
= PAGE_SIZE
;
94 adata(abfd
).exec_bytes_size
= EXEC_BYTES_SIZE
;
102 /* Finish up the reading of an a.out file header */
104 static const bfd_target
*
108 struct external_exec exec_bytes
; /* Raw exec header from file */
109 struct internal_exec exec
; /* Cleaned-up exec header */
110 const bfd_target
*target
;
112 if (bfd_read ((PTR
) &exec_bytes
, 1, EXEC_BYTES_SIZE
, abfd
)
113 != EXEC_BYTES_SIZE
) {
114 if (bfd_get_error () != bfd_error_system_call
)
115 bfd_set_error (bfd_error_wrong_format
);
120 exec
.a_info
= SWAP_MAGIC (exec_bytes
.e_info
);
122 exec
.a_info
= bfd_h_get_32 (abfd
, exec_bytes
.e_info
);
123 #endif /* SWAP_MAGIC */
125 if (N_BADMAG (exec
)) return 0;
127 if (!(MACHTYPE_OK (N_MACHTYPE (exec
)))) return 0;
130 NAME(aout
,swap_exec_header_in
)(abfd
, &exec_bytes
, &exec
);
133 /* swap_exec_header_in read in a_info with the wrong byte order */
134 exec
.a_info
= SWAP_MAGIC (exec_bytes
.e_info
);
135 #endif /* SWAP_MAGIC */
137 target
= NAME(aout
,some_aout_object_p
) (abfd
, &exec
, MY(callback
));
139 #ifdef ENTRY_CAN_BE_ZERO
140 /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
141 * means that it isn't obvious if EXEC_P should be set.
142 * All of the following must be true for an executable:
143 * There must be no relocations, the bfd can be neither an
144 * archive nor an archive element, and the file must be executable. */
146 if (exec
.a_trsize
+ exec
.a_drsize
== 0
147 && bfd_get_format(abfd
) == bfd_object
&& abfd
->my_archive
== NULL
)
151 #define S_IXUSR 0100 /* Execute by owner. */
153 if (stat(abfd
->filename
, &buf
) == 0 && (buf
.st_mode
& S_IXUSR
))
154 abfd
->flags
|= EXEC_P
;
156 #endif /* ENTRY_CAN_BE_ZERO */
160 #define MY_object_p MY(object_p)
169 if (NAME(aout
,mkobject
)(abfd
) == false)
171 #if 0 /* Sizes get set in set_sizes callback, later, after we know
172 the architecture and machine. */
173 adata(abfd
).page_size
= PAGE_SIZE
;
175 adata(abfd
).segment_size
= SEGMENT_SIZE
;
177 adata(abfd
).segment_size
= PAGE_SIZE
;
179 adata(abfd
).exec_bytes_size
= EXEC_BYTES_SIZE
;
183 #define MY_mkobject MY(mkobject)
186 #ifndef MY_bfd_copy_private_section_data
188 /* Copy private section data. This actually does nothing with the
189 sections. It copies the subformat field. We copy it here, because
190 we need to know whether this is a QMAGIC file before we set the
191 section contents, and copy_private_bfd_data is not called until
192 after the section contents have been set. */
196 MY_bfd_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
202 if (bfd_get_flavour (obfd
) == bfd_target_aout_flavour
)
203 obj_aout_subformat (obfd
) = obj_aout_subformat (ibfd
);
209 /* Write an object file.
210 Section contents have already been written. We write the
211 file header, symbols, and relocation. */
213 #ifndef MY_write_object_contents
215 MY(write_object_contents
) (abfd
)
218 struct external_exec exec_bytes
;
219 struct internal_exec
*execp
= exec_hdr (abfd
);
221 #if CHOOSE_RELOC_SIZE
222 CHOOSE_RELOC_SIZE(abfd
);
224 obj_reloc_entry_size (abfd
) = RELOC_STD_SIZE
;
227 WRITE_HEADERS(abfd
, execp
);
231 #define MY_write_object_contents MY(write_object_contents)
239 adata(abfd
).page_size
= PAGE_SIZE
;
242 adata(abfd
).segment_size
= SEGMENT_SIZE
;
244 adata(abfd
).segment_size
= PAGE_SIZE
;
247 #ifdef ZMAGIC_DISK_BLOCK_SIZE
248 adata(abfd
).zmagic_disk_block_size
= ZMAGIC_DISK_BLOCK_SIZE
;
250 adata(abfd
).zmagic_disk_block_size
= PAGE_SIZE
;
253 adata(abfd
).exec_bytes_size
= EXEC_BYTES_SIZE
;
256 #define MY_set_sizes MY(set_sizes)
259 #ifndef MY_exec_hdr_flags
260 #define MY_exec_hdr_flags 0
263 #ifndef MY_backend_data
265 #ifndef MY_zmagic_contiguous
266 #define MY_zmagic_contiguous 0
268 #ifndef MY_text_includes_header
269 #define MY_text_includes_header 0
271 #ifndef MY_exec_header_not_counted
272 #define MY_exec_header_not_counted 0
274 #ifndef MY_add_dynamic_symbols
275 #define MY_add_dynamic_symbols 0
277 #ifndef MY_add_one_symbol
278 #define MY_add_one_symbol 0
280 #ifndef MY_link_dynamic_object
281 #define MY_link_dynamic_object 0
283 #ifndef MY_write_dynamic_symbol
284 #define MY_write_dynamic_symbol 0
286 #ifndef MY_check_dynamic_reloc
287 #define MY_check_dynamic_reloc 0
289 #ifndef MY_finish_dynamic_link
290 #define MY_finish_dynamic_link 0
293 static CONST
struct aout_backend_data
MY(backend_data
) = {
294 MY_zmagic_contiguous
,
295 MY_text_includes_header
,
299 MY_exec_header_not_counted
,
300 MY_add_dynamic_symbols
,
302 MY_link_dynamic_object
,
303 MY_write_dynamic_symbol
,
304 MY_check_dynamic_reloc
,
305 MY_finish_dynamic_link
307 #define MY_backend_data &MY(backend_data)
310 #ifndef MY_final_link_callback
312 /* Callback for the final_link routine to set the section offsets. */
314 static void MY_final_link_callback
315 PARAMS ((bfd
*, file_ptr
*, file_ptr
*, file_ptr
*));
318 MY_final_link_callback (abfd
, ptreloff
, pdreloff
, psymoff
)
324 struct internal_exec
*execp
= exec_hdr (abfd
);
326 *ptreloff
= N_TRELOFF (*execp
);
327 *pdreloff
= N_DRELOFF (*execp
);
328 *psymoff
= N_SYMOFF (*execp
);
333 #ifndef MY_bfd_final_link
335 /* Final link routine. We need to use a call back to get the correct
336 offsets in the output file. */
339 MY_bfd_final_link (abfd
, info
)
341 struct bfd_link_info
*info
;
343 return NAME(aout
,final_link
) (abfd
, info
, MY_final_link_callback
);
348 /* We assume BFD generic archive files. */
349 #ifndef MY_openr_next_archived_file
350 #define MY_openr_next_archived_file bfd_generic_openr_next_archived_file
352 #ifndef MY_generic_stat_arch_elt
353 #define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
355 #ifndef MY_slurp_armap
356 #define MY_slurp_armap bfd_slurp_bsd_armap
358 #ifndef MY_slurp_extended_name_table
359 #define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
361 #ifndef MY_construct_extended_name_table
362 #define MY_construct_extended_name_table \
363 _bfd_archive_bsd_construct_extended_name_table
365 #ifndef MY_write_armap
366 #define MY_write_armap bsd_write_armap
368 #ifndef MY_truncate_arname
369 #define MY_truncate_arname bfd_bsd_truncate_arname
371 #ifndef MY_update_armap_timestamp
372 #define MY_update_armap_timestamp _bfd_archive_bsd_update_armap_timestamp
375 /* No core file defined here -- configure in trad-core.c separately. */
376 #ifndef MY_core_file_failing_command
377 #define MY_core_file_failing_command _bfd_nocore_core_file_failing_command
379 #ifndef MY_core_file_failing_signal
380 #define MY_core_file_failing_signal _bfd_nocore_core_file_failing_signal
382 #ifndef MY_core_file_matches_executable_p
383 #define MY_core_file_matches_executable_p \
384 _bfd_nocore_core_file_matches_executable_p
386 #ifndef MY_core_file_p
387 #define MY_core_file_p _bfd_dummy_target
390 #ifndef MY_bfd_debug_info_start
391 #define MY_bfd_debug_info_start bfd_void
393 #ifndef MY_bfd_debug_info_end
394 #define MY_bfd_debug_info_end bfd_void
396 #ifndef MY_bfd_debug_info_accumulate
397 #define MY_bfd_debug_info_accumulate \
398 (void (*) PARAMS ((bfd*, struct sec *))) bfd_void
401 #ifndef MY_core_file_failing_command
402 #define MY_core_file_failing_command NAME(aout,core_file_failing_command)
404 #ifndef MY_core_file_failing_signal
405 #define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
407 #ifndef MY_core_file_matches_executable_p
408 #define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
410 #ifndef MY_set_section_contents
411 #define MY_set_section_contents NAME(aout,set_section_contents)
413 #ifndef MY_get_section_contents
414 #define MY_get_section_contents NAME(aout,get_section_contents)
416 #ifndef MY_new_section_hook
417 #define MY_new_section_hook NAME(aout,new_section_hook)
419 #ifndef MY_get_symtab_upper_bound
420 #define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
422 #ifndef MY_get_symtab
423 #define MY_get_symtab NAME(aout,get_symtab)
425 #ifndef MY_get_reloc_upper_bound
426 #define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
428 #ifndef MY_canonicalize_reloc
429 #define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
431 #ifndef MY_make_empty_symbol
432 #define MY_make_empty_symbol NAME(aout,make_empty_symbol)
434 #ifndef MY_print_symbol
435 #define MY_print_symbol NAME(aout,print_symbol)
437 #ifndef MY_get_symbol_info
438 #define MY_get_symbol_info NAME(aout,get_symbol_info)
440 #ifndef MY_get_lineno
441 #define MY_get_lineno NAME(aout,get_lineno)
443 #ifndef MY_set_arch_mach
444 #define MY_set_arch_mach NAME(aout,set_arch_mach)
446 #ifndef MY_find_nearest_line
447 #define MY_find_nearest_line NAME(aout,find_nearest_line)
449 #ifndef MY_sizeof_headers
450 #define MY_sizeof_headers NAME(aout,sizeof_headers)
452 #ifndef MY_bfd_get_relocated_section_contents
453 #define MY_bfd_get_relocated_section_contents \
454 bfd_generic_get_relocated_section_contents
456 #ifndef MY_bfd_relax_section
457 #define MY_bfd_relax_section bfd_generic_relax_section
459 #ifndef MY_bfd_reloc_type_lookup
460 #define MY_bfd_reloc_type_lookup NAME(aout,reloc_type_lookup)
462 #ifndef MY_bfd_make_debug_symbol
463 #define MY_bfd_make_debug_symbol 0
465 #ifndef MY_read_minisymbols
466 #define MY_read_minisymbols NAME(aout,read_minisymbols)
468 #ifndef MY_minisymbol_to_symbol
469 #define MY_minisymbol_to_symbol NAME(aout,minisymbol_to_symbol)
471 #ifndef MY_bfd_link_hash_table_create
472 #define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
474 #ifndef MY_bfd_link_add_symbols
475 #define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
477 #ifndef MY_bfd_link_split_section
478 #define MY_bfd_link_split_section _bfd_generic_link_split_section
482 #ifndef MY_bfd_copy_private_bfd_data
483 #define MY_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
486 #ifndef MY_bfd_merge_private_bfd_data
487 #define MY_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
490 #ifndef MY_bfd_copy_private_symbol_data
491 #define MY_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
494 #ifndef MY_bfd_print_private_bfd_data
495 #define MY_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
498 #ifndef MY_bfd_set_private_flags
499 #define MY_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
502 #ifndef MY_bfd_is_local_label
503 #define MY_bfd_is_local_label bfd_generic_is_local_label
506 #ifndef MY_bfd_free_cached_info
507 #define MY_bfd_free_cached_info NAME(aout,bfd_free_cached_info)
510 #ifndef MY_close_and_cleanup
511 #define MY_close_and_cleanup MY_bfd_free_cached_info
514 #ifndef MY_get_dynamic_symtab_upper_bound
515 #define MY_get_dynamic_symtab_upper_bound \
516 _bfd_nodynamic_get_dynamic_symtab_upper_bound
518 #ifndef MY_canonicalize_dynamic_symtab
519 #define MY_canonicalize_dynamic_symtab \
520 _bfd_nodynamic_canonicalize_dynamic_symtab
522 #ifndef MY_get_dynamic_reloc_upper_bound
523 #define MY_get_dynamic_reloc_upper_bound \
524 _bfd_nodynamic_get_dynamic_reloc_upper_bound
526 #ifndef MY_canonicalize_dynamic_reloc
527 #define MY_canonicalize_dynamic_reloc \
528 _bfd_nodynamic_canonicalize_dynamic_reloc
531 /* Aout symbols normally have leading underscores */
532 #ifndef MY_symbol_leading_char
533 #define MY_symbol_leading_char '_'
536 /* Aout archives normally use spaces for padding */
538 #define AR_PAD_CHAR ' '
541 #ifndef MY_BFD_TARGET
542 const bfd_target
MY(vec
) =
544 TARGETNAME
, /* name */
545 bfd_target_aout_flavour
,
546 #ifdef TARGET_IS_BIG_ENDIAN_P
547 true, /* target byte order (big) */
548 true, /* target headers byte order (big) */
550 false, /* target byte order (little) */
551 false, /* target headers byte order (little) */
553 (HAS_RELOC
| EXEC_P
| /* object flags */
554 HAS_LINENO
| HAS_DEBUG
|
555 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
| D_PAGED
),
556 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
557 MY_symbol_leading_char
,
558 AR_PAD_CHAR
, /* ar_pad_char */
559 15, /* ar_max_namelen */
560 #ifdef TARGET_IS_BIG_ENDIAN_P
561 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
562 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
563 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* data */
564 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
565 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
566 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* hdrs */
568 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
569 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
570 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* data */
571 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
572 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
573 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* hdrs */
575 {_bfd_dummy_target
, MY_object_p
, /* bfd_check_format */
576 bfd_generic_archive_p
, MY_core_file_p
},
577 {bfd_false
, MY_mkobject
, /* bfd_set_format */
578 _bfd_generic_mkarchive
, bfd_false
},
579 {bfd_false
, MY_write_object_contents
, /* bfd_write_contents */
580 _bfd_write_archive_contents
, bfd_false
},
582 BFD_JUMP_TABLE_GENERIC (MY
),
583 BFD_JUMP_TABLE_COPY (MY
),
584 BFD_JUMP_TABLE_CORE (MY
),
585 BFD_JUMP_TABLE_ARCHIVE (MY
),
586 BFD_JUMP_TABLE_SYMBOLS (MY
),
587 BFD_JUMP_TABLE_RELOCS (MY
),
588 BFD_JUMP_TABLE_WRITE (MY
),
589 BFD_JUMP_TABLE_LINK (MY
),
590 BFD_JUMP_TABLE_DYNAMIC (MY
),
592 (PTR
) MY_backend_data
,
594 #endif /* MY_BFD_TARGET */