* aout-target.h, netbsd386.c: Replace NO_SWAP_MAGIC with SWAP_MAGIC,
[deliverable/binutils-gdb.git] / bfd / aout-target.h
CommitLineData
582bc90a 1/* Define a target vector and some small routines for a variant of a.out.
4c3721d5 2 Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
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20#include "aout/aout64.h"
21#include "aout/stab_gnu.h"
22#include "aout/ar.h"
23/*#include "libaout.h"*/
24
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25extern CONST struct reloc_howto_struct * NAME(aout,reloc_type_lookup) ();
26
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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. */
214f8f23 29#ifndef MY_callback
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30static bfd_target *
31DEFUN(MY(callback),(abfd),
32 bfd *abfd)
33{
34 struct internal_exec *execp = exec_hdr (abfd);
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35
36 /* Calculate the file positions of the parts of a newly read aout header */
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37 obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp);
38
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);
43
44 /* The file offsets of the sections */
45 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
46 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
47
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);
51
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);
55
582bc90a 56 /* Determine the architecture and machine type of the object file. */
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57#ifdef SET_ARCH_MACH
58 SET_ARCH_MACH(abfd, *execp);
59#else
60 bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0);
61#endif
62
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63 /* Don't set sizes now -- can't be sure until we know arch & mach.
64 Sizes get set in set_sizes callback, later. */
65#if 0
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66 adata(abfd).page_size = PAGE_SIZE;
67#ifdef SEGMENT_SIZE
68 adata(abfd).segment_size = SEGMENT_SIZE;
69#else
70 adata(abfd).segment_size = PAGE_SIZE;
71#endif
72 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
294eaca4 73#endif
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74
75 return abfd->xvec;
76}
214f8f23 77#endif
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78
79#ifndef MY_object_p
80/* Finish up the reading of an a.out file header */
81
82static bfd_target *
83DEFUN(MY(object_p),(abfd),
84 bfd *abfd)
85{
86 struct external_exec exec_bytes; /* Raw exec header from file */
87 struct internal_exec exec; /* Cleaned-up exec header */
88 bfd_target *target;
89
90 if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
91 != EXEC_BYTES_SIZE) {
92 bfd_error = wrong_format;
93 return 0;
94 }
95
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96#ifdef SWAP_MAGIC
97 exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
4c3721d5 98#else
e98e6ec1 99 exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
3f99570e 100#endif /* SWAP_MAGIC */
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101
102 if (N_BADMAG (exec)) return 0;
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103#ifdef MACHTYPE_OK
104 if (!(MACHTYPE_OK (N_MACHTYPE (exec)))) return 0;
105#endif
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106
107 NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
108 target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback));
109
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. */
116
117 if (exec.a_trsize + exec.a_drsize == 0
118 && bfd_get_format(abfd) == bfd_object && abfd->my_archive == NULL)
119 {
120 struct stat buf;
121#ifndef S_IXUSR
122#define S_IXUSR 0100 /* Execute by owner. */
123#endif
124 if (stat(abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
125 abfd->flags |= EXEC_P;
126 }
127#endif /* ENTRY_CAN_BE_ZERO */
128
129 return target;
130}
131#define MY_object_p MY(object_p)
132#endif
133
134
135#ifndef MY_mkobject
136static boolean
137DEFUN(MY(mkobject),(abfd),
138 bfd *abfd)
139{
140 if (NAME(aout,mkobject)(abfd) == false)
141 return false;
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142#if 0 /* Sizes get set in set_sizes callback, later, after we know
143 the architecture and machine. */
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144 adata(abfd).page_size = PAGE_SIZE;
145#ifdef SEGMENT_SIZE
146 adata(abfd).segment_size = SEGMENT_SIZE;
147#else
148 adata(abfd).segment_size = PAGE_SIZE;
149#endif
150 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
294eaca4 151#endif
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152 return true;
153}
154#define MY_mkobject MY(mkobject)
155#endif
156
157/* Write an object file.
158 Section contents have already been written. We write the
159 file header, symbols, and relocation. */
160
161#ifndef MY_write_object_contents
162static boolean
163DEFUN(MY(write_object_contents),(abfd),
164 bfd *abfd)
165{
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166 struct external_exec exec_bytes;
167 struct internal_exec *execp = exec_hdr (abfd);
168
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169#if CHOOSE_RELOC_SIZE
170 CHOOSE_RELOC_SIZE(abfd);
171#else
172 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
173#endif
174
e98e6ec1 175 WRITE_HEADERS(abfd, execp);
582bc90a 176
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177 return true;
178}
179#define MY_write_object_contents MY(write_object_contents)
180#endif
181
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182#ifndef MY_set_sizes
183static boolean
184DEFUN(MY(set_sizes),(abfd), bfd *abfd)
185{
186 adata(abfd).page_size = PAGE_SIZE;
187#ifdef SEGMENT_SIZE
188 adata(abfd).segment_size = SEGMENT_SIZE;
189#else
190 adata(abfd).segment_size = PAGE_SIZE;
191#endif
192 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
193 return true;
194}
195#define MY_set_sizes MY(set_sizes)
196#endif
197
198#ifndef MY_backend_data
199static CONST struct aout_backend_data MY(backend_data) = {
200 0, /* zmagic contiguous */
201 0, /* text incl header */
202 0, /* text vma? */
203 MY_set_sizes,
1f29e30b 204 0, /* exec header is counted */
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205};
206#define MY_backend_data &MY(backend_data)
207#endif
208
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209#ifndef MY_bfd_final_link
210
211/* Final link routine. We need to use a call back to get the correct
212 offsets in the output file. */
213
214static void final_link_callback
215 PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
216
217static void
218final_link_callback (abfd, ptreloff, pdreloff, psymoff)
219 bfd *abfd;
220 file_ptr *ptreloff;
221 file_ptr *pdreloff;
222 file_ptr *psymoff;
223{
224 struct internal_exec *execp = exec_hdr (abfd);
225
226 *ptreloff = N_TRELOFF (*execp);
227 *pdreloff = N_DRELOFF (*execp);
228 *psymoff = N_SYMOFF (*execp);
229}
230
231static boolean
232MY_bfd_final_link (abfd, info)
233 bfd *abfd;
234 struct bfd_link_info *info;
235{
236 return NAME(aout,final_link) (abfd, info, final_link_callback);
237}
238
239#endif
240
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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
244#endif
245#ifndef MY_generic_stat_arch_elt
246#define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
247#endif
248#ifndef MY_slurp_armap
249#define MY_slurp_armap bfd_slurp_bsd_armap
250#endif
251#ifndef MY_slurp_extended_name_table
582bc90a 252#define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
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253#endif
254#ifndef MY_write_armap
255#define MY_write_armap bsd_write_armap
256#endif
257#ifndef MY_truncate_arname
258#define MY_truncate_arname bfd_bsd_truncate_arname
259#endif
260
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
264#endif
265#ifndef MY_core_file_failing_signal
266#define MY_core_file_failing_signal _bfd_dummy_core_file_failing_signal
267#endif
268#ifndef MY_core_file_matches_executable_p
269#define MY_core_file_matches_executable_p \
270 _bfd_dummy_core_file_matches_executable_p
271#endif
272#ifndef MY_core_file_p
273#define MY_core_file_p _bfd_dummy_target
274#endif
275
276#ifndef MY_bfd_debug_info_start
277#define MY_bfd_debug_info_start bfd_void
278#endif
279#ifndef MY_bfd_debug_info_end
280#define MY_bfd_debug_info_end bfd_void
281#endif
282#ifndef MY_bfd_debug_info_accumulate
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283#define MY_bfd_debug_info_accumulate \
284 (void (*) PARAMS ((bfd*, struct sec *))) bfd_void
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285#endif
286
287#ifndef MY_core_file_failing_command
288#define MY_core_file_failing_command NAME(aout,core_file_failing_command)
289#endif
290#ifndef MY_core_file_failing_signal
291#define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
292#endif
293#ifndef MY_core_file_matches_executable_p
294#define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
295#endif
296#ifndef MY_slurp_armap
297#define MY_slurp_armap NAME(aout,slurp_armap)
298#endif
299#ifndef MY_slurp_extended_name_table
300#define MY_slurp_extended_name_table NAME(aout,slurp_extended_name_table)
301#endif
302#ifndef MY_truncate_arname
303#define MY_truncate_arname NAME(aout,truncate_arname)
304#endif
305#ifndef MY_write_armap
306#define MY_write_armap NAME(aout,write_armap)
307#endif
308#ifndef MY_close_and_cleanup
309#define MY_close_and_cleanup NAME(aout,close_and_cleanup)
310#endif
311#ifndef MY_set_section_contents
312#define MY_set_section_contents NAME(aout,set_section_contents)
313#endif
314#ifndef MY_get_section_contents
315#define MY_get_section_contents NAME(aout,get_section_contents)
316#endif
317#ifndef MY_new_section_hook
318#define MY_new_section_hook NAME(aout,new_section_hook)
319#endif
320#ifndef MY_get_symtab_upper_bound
321#define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
322#endif
323#ifndef MY_get_symtab
324#define MY_get_symtab NAME(aout,get_symtab)
325#endif
326#ifndef MY_get_reloc_upper_bound
327#define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
328#endif
329#ifndef MY_canonicalize_reloc
330#define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
331#endif
332#ifndef MY_make_empty_symbol
333#define MY_make_empty_symbol NAME(aout,make_empty_symbol)
334#endif
335#ifndef MY_print_symbol
336#define MY_print_symbol NAME(aout,print_symbol)
337#endif
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338#ifndef MY_get_symbol_info
339#define MY_get_symbol_info NAME(aout,get_symbol_info)
340#endif
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341#ifndef MY_get_lineno
342#define MY_get_lineno NAME(aout,get_lineno)
343#endif
344#ifndef MY_set_arch_mach
345#define MY_set_arch_mach NAME(aout,set_arch_mach)
346#endif
347#ifndef MY_openr_next_archived_file
348#define MY_openr_next_archived_file NAME(aout,openr_next_archived_file)
349#endif
350#ifndef MY_find_nearest_line
351#define MY_find_nearest_line NAME(aout,find_nearest_line)
352#endif
353#ifndef MY_generic_stat_arch_elt
354#define MY_generic_stat_arch_elt NAME(aout,generic_stat_arch_elt)
355#endif
356#ifndef MY_sizeof_headers
357#define MY_sizeof_headers NAME(aout,sizeof_headers)
358#endif
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359#ifndef MY_bfd_get_relocated_section_contents
360#define MY_bfd_get_relocated_section_contents \
361 bfd_generic_get_relocated_section_contents
e98e6ec1 362#endif
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363#ifndef MY_bfd_relax_section
364#define MY_bfd_relax_section bfd_generic_relax_section
365#endif
366#ifndef MY_bfd_reloc_type_lookup
367#define MY_bfd_reloc_type_lookup NAME(aout,reloc_type_lookup)
e98e6ec1 368#endif
4c3721d5
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369#ifndef MY_bfd_make_debug_symbol
370#define MY_bfd_make_debug_symbol 0
e98e6ec1 371#endif
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372#ifndef MY_bfd_link_hash_table_create
373#define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
582bc90a 374#endif
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375#ifndef MY_bfd_link_add_symbols
376#define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
582bc90a 377#endif
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378
379/* Aout symbols normally have leading underscores */
380#ifndef MY_symbol_leading_char
381#define MY_symbol_leading_char '_'
582bc90a 382#endif
e98e6ec1 383
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384/* Aout archives normally use spaces for padding */
385#ifndef AR_PAD_CHAR
386#define AR_PAD_CHAR ' '
387#endif
388
389#ifndef MY_BFD_TARGET
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390bfd_target MY(vec) =
391{
392 TARGETNAME, /* name */
393 bfd_target_aout_flavour,
582bc90a
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394#ifdef TARGET_IS_BIG_ENDIAN_P
395 true, /* target byte order (big) */
396 true, /* target headers byte order (big) */
397#else
398 false, /* target byte order (little) */
399 false, /* target headers byte order (little) */
400#endif
e98e6ec1
SC
401 (HAS_RELOC | EXEC_P | /* object flags */
402 HAS_LINENO | HAS_DEBUG |
4c3721d5 403 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
e98e6ec1 404 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
294eaca4 405 MY_symbol_leading_char,
4c3721d5 406 AR_PAD_CHAR, /* ar_pad_char */
582bc90a 407 15, /* ar_max_namelen */
4c3721d5 408 3, /* minimum alignment */
e98e6ec1 409#ifdef TARGET_IS_BIG_ENDIAN_P
4c3721d5
ILT
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 */
e98e6ec1 416#else
4c3721d5
ILT
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 */
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423#endif
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},
430
4c3721d5 431 JUMP_TABLE (MY),
582bc90a 432 (PTR) MY_backend_data,
e98e6ec1 433};
4c3721d5 434#endif /* MY_BFD_TARGET */
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