1 /* Define a target vector and some small routines for a variant of a.out.
2 Copyright (C) 1990, 1991, 1992, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 #include "aout/aout64.h"
21 #include "aout/stab_gnu.h"
23 /*#include "libaout.h"*/
25 extern CONST struct reloc_howto_struct * 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. */
31 DEFUN(MY(callback),(abfd),
34 struct internal_exec *execp = exec_hdr (abfd);
36 /* Calculate the file positions of the parts of a newly read aout header */
37 obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp);
39 /* The virtual memory addresses of the sections */
40 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
41 obj_datasec (abfd)->vma = N_DATADDR(*execp);
42 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
44 /* The file offsets of the sections */
45 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
46 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
48 /* The file offsets of the relocation info */
49 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
50 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
52 /* The file offsets of the string table and symbol table. */
53 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
54 obj_str_filepos (abfd) = N_STROFF (*execp);
56 /* Determine the architecture and machine type of the object file. */
58 SET_ARCH_MACH(abfd, *execp);
60 bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0);
63 /* Don't set sizes now -- can't be sure until we know arch & mach.
64 Sizes get set in set_sizes callback, later. */
66 adata(abfd).page_size = PAGE_SIZE;
68 adata(abfd).segment_size = SEGMENT_SIZE;
70 adata(abfd).segment_size = PAGE_SIZE;
72 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
80 /* Finish up the reading of an a.out file header */
83 DEFUN(MY(object_p),(abfd),
86 struct external_exec exec_bytes; /* Raw exec header from file */
87 struct internal_exec exec; /* Cleaned-up exec header */
90 if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
92 bfd_error = wrong_format;
97 exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
99 exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
100 #endif /* SWAP_MAGIC */
102 if (N_BADMAG (exec)) return 0;
104 if (!(MACHTYPE_OK (N_MACHTYPE (exec)))) return 0;
107 NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
108 target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback));
110 #ifdef ENTRY_CAN_BE_ZERO
111 /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
112 * means that it isn't obvious if EXEC_P should be set.
113 * All of the following must be true for an executable:
114 * There must be no relocations, the bfd can be neither an
115 * archive nor an archive element, and the file must be executable. */
117 if (exec.a_trsize + exec.a_drsize == 0
118 && bfd_get_format(abfd) == bfd_object && abfd->my_archive == NULL)
122 #define S_IXUSR 0100 /* Execute by owner. */
124 if (stat(abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
125 abfd->flags |= EXEC_P;
127 #endif /* ENTRY_CAN_BE_ZERO */
131 #define MY_object_p MY(object_p)
137 DEFUN(MY(mkobject),(abfd),
140 if (NAME(aout,mkobject)(abfd) == false)
142 #if 0 /* Sizes get set in set_sizes callback, later, after we know
143 the architecture and machine. */
144 adata(abfd).page_size = PAGE_SIZE;
146 adata(abfd).segment_size = SEGMENT_SIZE;
148 adata(abfd).segment_size = PAGE_SIZE;
150 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
154 #define MY_mkobject MY(mkobject)
157 /* Write an object file.
158 Section contents have already been written. We write the
159 file header, symbols, and relocation. */
161 #ifndef MY_write_object_contents
163 DEFUN(MY(write_object_contents),(abfd),
166 struct external_exec exec_bytes;
167 struct internal_exec *execp = exec_hdr (abfd);
169 #if CHOOSE_RELOC_SIZE
170 CHOOSE_RELOC_SIZE(abfd);
172 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
175 WRITE_HEADERS(abfd, execp);
179 #define MY_write_object_contents MY(write_object_contents)
184 DEFUN(MY(set_sizes),(abfd), bfd *abfd)
186 adata(abfd).page_size = PAGE_SIZE;
188 adata(abfd).segment_size = SEGMENT_SIZE;
190 adata(abfd).segment_size = PAGE_SIZE;
192 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
195 #define MY_set_sizes MY(set_sizes)
198 #ifndef MY_backend_data
199 static CONST struct aout_backend_data MY(backend_data) = {
200 0, /* zmagic contiguous */
201 0, /* text incl header */
204 0, /* exec header is counted */
206 #define MY_backend_data &MY(backend_data)
209 #ifndef MY_bfd_final_link
211 /* Final link routine. We need to use a call back to get the correct
212 offsets in the output file. */
214 static void final_link_callback
215 PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
218 final_link_callback (abfd, ptreloff, pdreloff, psymoff)
224 struct internal_exec *execp = exec_hdr (abfd);
226 *ptreloff = N_TRELOFF (*execp);
227 *pdreloff = N_DRELOFF (*execp);
228 *psymoff = N_SYMOFF (*execp);
232 MY_bfd_final_link (abfd, info)
234 struct bfd_link_info *info;
236 return NAME(aout,final_link) (abfd, info, final_link_callback);
241 /* We assume BFD generic archive files. */
242 #ifndef MY_openr_next_archived_file
243 #define MY_openr_next_archived_file bfd_generic_openr_next_archived_file
245 #ifndef MY_generic_stat_arch_elt
246 #define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
248 #ifndef MY_slurp_armap
249 #define MY_slurp_armap bfd_slurp_bsd_armap
251 #ifndef MY_slurp_extended_name_table
252 #define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
254 #ifndef MY_write_armap
255 #define MY_write_armap bsd_write_armap
257 #ifndef MY_truncate_arname
258 #define MY_truncate_arname bfd_bsd_truncate_arname
261 /* No core file defined here -- configure in trad-core.c separately. */
262 #ifndef MY_core_file_failing_command
263 #define MY_core_file_failing_command _bfd_dummy_core_file_failing_command
265 #ifndef MY_core_file_failing_signal
266 #define MY_core_file_failing_signal _bfd_dummy_core_file_failing_signal
268 #ifndef MY_core_file_matches_executable_p
269 #define MY_core_file_matches_executable_p \
270 _bfd_dummy_core_file_matches_executable_p
272 #ifndef MY_core_file_p
273 #define MY_core_file_p _bfd_dummy_target
276 #ifndef MY_bfd_debug_info_start
277 #define MY_bfd_debug_info_start bfd_void
279 #ifndef MY_bfd_debug_info_end
280 #define MY_bfd_debug_info_end bfd_void
282 #ifndef MY_bfd_debug_info_accumulate
283 #define MY_bfd_debug_info_accumulate \
284 (void (*) PARAMS ((bfd*, struct sec *))) bfd_void
287 #ifndef MY_core_file_failing_command
288 #define MY_core_file_failing_command NAME(aout,core_file_failing_command)
290 #ifndef MY_core_file_failing_signal
291 #define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
293 #ifndef MY_core_file_matches_executable_p
294 #define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
296 #ifndef MY_slurp_armap
297 #define MY_slurp_armap NAME(aout,slurp_armap)
299 #ifndef MY_slurp_extended_name_table
300 #define MY_slurp_extended_name_table NAME(aout,slurp_extended_name_table)
302 #ifndef MY_truncate_arname
303 #define MY_truncate_arname NAME(aout,truncate_arname)
305 #ifndef MY_write_armap
306 #define MY_write_armap NAME(aout,write_armap)
308 #ifndef MY_close_and_cleanup
309 #define MY_close_and_cleanup NAME(aout,close_and_cleanup)
311 #ifndef MY_set_section_contents
312 #define MY_set_section_contents NAME(aout,set_section_contents)
314 #ifndef MY_get_section_contents
315 #define MY_get_section_contents NAME(aout,get_section_contents)
317 #ifndef MY_new_section_hook
318 #define MY_new_section_hook NAME(aout,new_section_hook)
320 #ifndef MY_get_symtab_upper_bound
321 #define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
323 #ifndef MY_get_symtab
324 #define MY_get_symtab NAME(aout,get_symtab)
326 #ifndef MY_get_reloc_upper_bound
327 #define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
329 #ifndef MY_canonicalize_reloc
330 #define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
332 #ifndef MY_make_empty_symbol
333 #define MY_make_empty_symbol NAME(aout,make_empty_symbol)
335 #ifndef MY_print_symbol
336 #define MY_print_symbol NAME(aout,print_symbol)
338 #ifndef MY_get_symbol_info
339 #define MY_get_symbol_info NAME(aout,get_symbol_info)
341 #ifndef MY_get_lineno
342 #define MY_get_lineno NAME(aout,get_lineno)
344 #ifndef MY_set_arch_mach
345 #define MY_set_arch_mach NAME(aout,set_arch_mach)
347 #ifndef MY_openr_next_archived_file
348 #define MY_openr_next_archived_file NAME(aout,openr_next_archived_file)
350 #ifndef MY_find_nearest_line
351 #define MY_find_nearest_line NAME(aout,find_nearest_line)
353 #ifndef MY_generic_stat_arch_elt
354 #define MY_generic_stat_arch_elt NAME(aout,generic_stat_arch_elt)
356 #ifndef MY_sizeof_headers
357 #define MY_sizeof_headers NAME(aout,sizeof_headers)
359 #ifndef MY_bfd_get_relocated_section_contents
360 #define MY_bfd_get_relocated_section_contents \
361 bfd_generic_get_relocated_section_contents
363 #ifndef MY_bfd_relax_section
364 #define MY_bfd_relax_section bfd_generic_relax_section
366 #ifndef MY_bfd_reloc_type_lookup
367 #define MY_bfd_reloc_type_lookup NAME(aout,reloc_type_lookup)
369 #ifndef MY_bfd_make_debug_symbol
370 #define MY_bfd_make_debug_symbol 0
372 #ifndef MY_bfd_link_hash_table_create
373 #define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
375 #ifndef MY_bfd_link_add_symbols
376 #define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
379 /* Aout symbols normally have leading underscores */
380 #ifndef MY_symbol_leading_char
381 #define MY_symbol_leading_char '_'
384 /* Aout archives normally use spaces for padding */
386 #define AR_PAD_CHAR ' '
389 #ifndef MY_BFD_TARGET
392 TARGETNAME, /* name */
393 bfd_target_aout_flavour,
394 #ifdef TARGET_IS_BIG_ENDIAN_P
395 true, /* target byte order (big) */
396 true, /* target headers byte order (big) */
398 false, /* target byte order (little) */
399 false, /* target headers byte order (little) */
401 (HAS_RELOC | EXEC_P | /* object flags */
402 HAS_LINENO | HAS_DEBUG |
403 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
404 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
405 MY_symbol_leading_char,
406 AR_PAD_CHAR, /* ar_pad_char */
407 15, /* ar_max_namelen */
408 3, /* minimum alignment */
409 #ifdef TARGET_IS_BIG_ENDIAN_P
410 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
411 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
412 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
413 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
414 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
415 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
417 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
418 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
419 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
420 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
421 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
422 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
424 {_bfd_dummy_target, MY_object_p, /* bfd_check_format */
425 bfd_generic_archive_p, MY_core_file_p},
426 {bfd_false, MY_mkobject, /* bfd_set_format */
427 _bfd_generic_mkarchive, bfd_false},
428 {bfd_false, MY_write_object_contents, /* bfd_write_contents */
429 _bfd_write_archive_contents, bfd_false},
432 (PTR) MY_backend_data,
434 #endif /* MY_BFD_TARGET */