Update copyright notices
[deliverable/binutils-gdb.git] / bfd / i386os9k.c
CommitLineData
252b5132 1/* BFD back-end for os9000 i386 binaries.
7898deda
NC
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999
3 Free Software Foundation, Inc.
252b5132
RH
4 Written by Cygnus Support.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22
23#include "bfd.h"
24#include "sysdep.h"
25#include "libbfd.h"
26#include "bfdlink.h"
27#include "libaout.h" /* BFD a.out internal data structures */
28#include "os9k.h"
29
30static const bfd_target *os9k_callback PARAMS ((bfd *));
31
32/* Swaps the information in an executable header taken from a raw byte
33 stream memory image, into the internal exec_header structure. */
34boolean
35os9k_swap_exec_header_in (abfd, raw_bytes, execp)
36 bfd *abfd;
37 mh_com *raw_bytes;
38 struct internal_exec *execp;
39{
40 mh_com *bytes = (mh_com *) raw_bytes;
41 unsigned int dload, dmemsize, dmemstart;
42
43 /* Now fill in fields in the execp, from the bytes in the raw data. */
44 execp->a_info = bfd_h_get_16 (abfd, bytes->m_sync);
45 execp->a_syms = 0;
46 execp->a_entry = bfd_h_get_32 (abfd, bytes->m_exec);
47 execp->a_talign = 2;
48 execp->a_dalign = 2;
49 execp->a_balign = 2;
50
51 dload = bfd_h_get_32 (abfd, bytes->m_idata);
52 execp->a_data = dload + 8;
53
54 if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0
55 || (bfd_read (&dmemstart, sizeof (dmemstart), 1, abfd)
56 != sizeof (dmemstart))
57 || (bfd_read (&dmemsize, sizeof (dmemsize), 1, abfd)
58 != sizeof (dmemsize)))
59 return false;
60
61 execp->a_tload = 0;
62 execp->a_dload = bfd_h_get_32 (abfd, (unsigned char *) &dmemstart);
63 execp->a_text = dload - execp->a_tload;
64 execp->a_data = bfd_h_get_32 (abfd, (unsigned char *) &dmemsize);
65 execp->a_bss = bfd_h_get_32 (abfd, bytes->m_data) - execp->a_data;
66
67 execp->a_trsize = 0;
68 execp->a_drsize = 0;
69
70 return true;
71}
72
73#if 0
74/* Swaps the information in an internal exec header structure into the
75 supplied buffer ready for writing to disk. */
76
77PROTO (void, os9k_swap_exec_header_out,
78 (bfd * abfd,
79 struct internal_exec * execp,
80 struct mh_com * raw_bytes));
81void
82os9k_swap_exec_header_out (abfd, execp, raw_bytes)
83 bfd *abfd;
84 struct internal_exec *execp;
85 mh_com *raw_bytes;
86{
87 mh_com *bytes = (mh_com *) raw_bytes;
88
89 /* Now fill in fields in the raw data, from the fields in the exec struct. */
90 bfd_h_put_32 (abfd, execp->a_info, bytes->e_info);
91 bfd_h_put_32 (abfd, execp->a_text, bytes->e_text);
92 bfd_h_put_32 (abfd, execp->a_data, bytes->e_data);
93 bfd_h_put_32 (abfd, execp->a_bss, bytes->e_bss);
94 bfd_h_put_32 (abfd, execp->a_syms, bytes->e_syms);
95 bfd_h_put_32 (abfd, execp->a_entry, bytes->e_entry);
96 bfd_h_put_32 (abfd, execp->a_trsize, bytes->e_trsize);
97 bfd_h_put_32 (abfd, execp->a_drsize, bytes->e_drsize);
98 bfd_h_put_32 (abfd, execp->a_tload, bytes->e_tload);
99 bfd_h_put_32 (abfd, execp->a_dload, bytes->e_dload);
100 bytes->e_talign[0] = execp->a_talign;
101 bytes->e_dalign[0] = execp->a_dalign;
102 bytes->e_balign[0] = execp->a_balign;
103 bytes->e_relaxable[0] = execp->a_relaxable;
104}
105
106#endif /* 0 */
107
108static const bfd_target *
109os9k_object_p (abfd)
110 bfd *abfd;
111{
112 struct internal_exec anexec;
113 mh_com exec_bytes;
114
115 if (bfd_read ((PTR) & exec_bytes, MHCOM_BYTES_SIZE, 1, abfd)
116 != MHCOM_BYTES_SIZE)
117 {
118 if (bfd_get_error () != bfd_error_system_call)
119 bfd_set_error (bfd_error_wrong_format);
120 return 0;
121 }
122
123 anexec.a_info = bfd_h_get_16 (abfd, exec_bytes.m_sync);
124 if (N_BADMAG (anexec))
125 {
126 bfd_set_error (bfd_error_wrong_format);
127 return 0;
128 }
129
130 if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec))
131 {
132 if (bfd_get_error () != bfd_error_system_call)
133 bfd_set_error (bfd_error_wrong_format);
134 return NULL;
135 }
136 return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback);
137}
138
139
140/* Finish up the opening of a b.out file for reading. Fill in all the
141 fields that are not handled by common code. */
142
143static const bfd_target *
144os9k_callback (abfd)
145 bfd *abfd;
146{
147 struct internal_exec *execp = exec_hdr (abfd);
148 unsigned long bss_start;
149
150 /* Architecture and machine type */
151 bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
152
153 /* The positions of the string table and symbol table. */
154 obj_str_filepos (abfd) = 0;
155 obj_sym_filepos (abfd) = 0;
156
157 /* The alignments of the sections */
158 obj_textsec (abfd)->alignment_power = execp->a_talign;
159 obj_datasec (abfd)->alignment_power = execp->a_dalign;
160 obj_bsssec (abfd)->alignment_power = execp->a_balign;
161
162 /* The starting addresses of the sections. */
163 obj_textsec (abfd)->vma = execp->a_tload;
164 obj_datasec (abfd)->vma = execp->a_dload;
165
166 /* And reload the sizes, since the aout module zaps them */
167 obj_textsec (abfd)->_raw_size = execp->a_text;
168
169 bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
170 obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
171
172 /* The file positions of the sections */
173 obj_textsec (abfd)->filepos = execp->a_entry;
174 obj_datasec (abfd)->filepos = execp->a_dload;
175
176 /* The file positions of the relocation info ***
177 obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
178 obj_datasec (abfd)->rel_filepos = N_DROFF(*execp);
179 */
180
181 adata (abfd).page_size = 1; /* Not applicable. */
182 adata (abfd).segment_size = 1;/* Not applicable. */
183 adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE;
184
185 return abfd->xvec;
186}
187
188#if 0
189struct bout_data_struct
190{
191 struct aoutdata a;
192 struct internal_exec e;
193};
194
195static boolean
196os9k_mkobject (abfd)
197 bfd *abfd;
198{
199 struct bout_data_struct *rawptr;
200
201 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
202 if (rawptr == NULL)
203 return false;
204
205 abfd->tdata.bout_data = rawptr;
206 exec_hdr (abfd) = &rawptr->e;
207
208 obj_textsec (abfd) = (asection *) NULL;
209 obj_datasec (abfd) = (asection *) NULL;
210 obj_bsssec (abfd) = (asection *) NULL;
211
212 return true;
213}
214
215static boolean
216os9k_write_object_contents (abfd)
217 bfd *abfd;
218{
219 struct external_exec swapped_hdr;
220
221 if (! aout_32_make_sections (abfd))
222 return false;
223
224 exec_hdr (abfd)->a_info = BMAGIC;
225
226 exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size;
227 exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size;
228 exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size;
229 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
230 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
231 exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
232 sizeof (struct relocation_info));
233 exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
234 sizeof (struct relocation_info));
235
236 exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
237 exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
238 exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
239
240 exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
241 exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
242
243 bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
244
245 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
246 || (bfd_write ((PTR) & swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
247 != EXEC_BYTES_SIZE))
248 return false;
249
250 /* Now write out reloc info, followed by syms and strings */
251 if (bfd_get_symcount (abfd) != 0)
252 {
253 if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*exec_hdr (abfd))), SEEK_SET)
254 != 0)
255 return false;
256
257 if (!aout_32_write_syms (abfd))
258 return false;
259
260 if (bfd_seek (abfd, (file_ptr) (N_TROFF (*exec_hdr (abfd))), SEEK_SET)
261 != 0)
262 return false;
263
264 if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd)))
265 return false;
266 if (bfd_seek (abfd, (file_ptr) (N_DROFF (*exec_hdr (abfd))), SEEK_SET)
267 != 0)
268 return false;
269
270 if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd)))
271 return false;
272 }
273 return true;
274}
275\f
276static boolean
277os9k_set_section_contents (abfd, section, location, offset, count)
278 bfd *abfd;
279 sec_ptr section;
280 unsigned char *location;
281 file_ptr offset;
282 int count;
283{
284
285 if (abfd->output_has_begun == false)
286 { /* set by bfd.c handler */
287 if (! aout_32_make_sections (abfd))
288 return false;
289
290 obj_textsec (abfd)->filepos = sizeof (struct internal_exec);
291 obj_datasec (abfd)->filepos = obj_textsec (abfd)->filepos
292 + obj_textsec (abfd)->_raw_size;
293
294 }
295 /* regardless, once we know what we're doing, we might as well get going */
296 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
297 return false;
298
299 if (count != 0)
300 {
301 return (bfd_write ((PTR) location, 1, count, abfd) == count) ? true : false;
302 }
303 return true;
304}
305#endif /* 0 */
306
307static int
308os9k_sizeof_headers (ignore_abfd, ignore)
5f771d47
ILT
309 bfd *ignore_abfd ATTRIBUTE_UNUSED;
310 boolean ignore ATTRIBUTE_UNUSED;
252b5132
RH
311{
312 return sizeof (struct internal_exec);
313}
314
315
316/***********************************************************************/
317
318#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
319
320#define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
321
322#define aout_32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
323
324#define aout_32_get_section_contents_in_window \
325 _bfd_generic_get_section_contents_in_window
326
327#define os9k_bfd_get_relocated_section_contents \
328 bfd_generic_get_relocated_section_contents
329#define os9k_bfd_relax_section bfd_generic_relax_section
330#define os9k_bfd_gc_sections bfd_generic_gc_sections
331#define os9k_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
332#define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols
333#define os9k_bfd_final_link _bfd_generic_final_link
334#define os9k_bfd_link_split_section _bfd_generic_link_split_section
335
336const bfd_target i386os9k_vec =
337{
338 "i386os9k", /* name */
339 bfd_target_os9k_flavour,
340 BFD_ENDIAN_LITTLE, /* data byte order is little */
341 BFD_ENDIAN_LITTLE, /* hdr byte order is little */
342 (HAS_RELOC | EXEC_P | WP_TEXT), /* object flags */
343 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */
344 0, /* symbol leading char */
345 ' ', /* ar_pad_char */
346 16, /* ar_max_namelen */
347
348 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
349 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
350 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
351 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
352 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
353 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
354 {_bfd_dummy_target, os9k_object_p, /* bfd_check_format */
355 bfd_generic_archive_p, _bfd_dummy_target},
356 {bfd_false, bfd_false, /* bfd_set_format */
357 _bfd_generic_mkarchive, bfd_false},
358 {bfd_false, bfd_false, /* bfd_write_contents */
359 _bfd_write_archive_contents, bfd_false},
360
361 BFD_JUMP_TABLE_GENERIC (aout_32),
362 BFD_JUMP_TABLE_COPY (_bfd_generic),
363 BFD_JUMP_TABLE_CORE (_bfd_nocore),
364 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
365 BFD_JUMP_TABLE_SYMBOLS (aout_32),
366 BFD_JUMP_TABLE_RELOCS (aout_32),
367 BFD_JUMP_TABLE_WRITE (aout_32),
368 BFD_JUMP_TABLE_LINK (os9k),
369 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
370
c3c89269
NC
371 NULL,
372
252b5132
RH
373 (PTR) 0,
374};
This page took 0.093054 seconds and 4 git commands to generate.