1 /* BFD back-end for a.out.adobe binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3 Written by Cygnus Support. Based on bout.c.
5 This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
10 (at your option) any later version.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "aout/adobe.h"
27 #include "aout/stab_gnu.h"
28 #include "libaout.h" /* BFD a.out internal data structures */
30 extern const bfd_target a_out_adobe_vec; /* Forward decl */
32 static const bfd_target *aout_adobe_callback PARAMS ((bfd *));
34 extern boolean aout_32_slurp_symbol_table PARAMS ((bfd *abfd));
35 extern boolean aout_32_write_syms PARAMS ((bfd *));
36 static void aout_adobe_write_section PARAMS ((bfd *abfd, sec_ptr sect));
38 /* Swaps the information in an executable header taken from a raw byte
39 stream memory image, into the internal exec_header structure. */
41 void aout_adobe_swap_exec_header_in
42 PARAMS ((bfd *abfd, struct external_exec *raw_bytes,
43 struct internal_exec *execp));
46 aout_adobe_swap_exec_header_in (abfd, raw_bytes, execp)
48 struct external_exec *raw_bytes;
49 struct internal_exec *execp;
51 struct external_exec *bytes = (struct external_exec *)raw_bytes;
53 /* Now fill in fields in the execp, from the bytes in the raw data. */
54 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
55 execp->a_text = GET_WORD (abfd, bytes->e_text);
56 execp->a_data = GET_WORD (abfd, bytes->e_data);
57 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
58 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
59 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
60 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
61 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
64 /* Swaps the information in an internal exec header structure into the
65 supplied buffer ready for writing to disk. */
67 PROTO(void, aout_adobe_swap_exec_header_out,
69 struct internal_exec *execp,
70 struct external_exec *raw_bytes));
72 aout_adobe_swap_exec_header_out (abfd, execp, raw_bytes)
74 struct internal_exec *execp;
75 struct external_exec *raw_bytes;
77 struct external_exec *bytes = (struct external_exec *)raw_bytes;
79 /* Now fill in fields in the raw data, from the fields in the exec struct. */
80 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
81 PUT_WORD (abfd, execp->a_text , bytes->e_text);
82 PUT_WORD (abfd, execp->a_data , bytes->e_data);
83 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
84 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
85 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
86 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
87 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
91 static const bfd_target *
92 aout_adobe_object_p (abfd)
95 struct internal_exec anexec;
96 struct external_exec exec_bytes;
99 if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
100 != EXEC_BYTES_SIZE) {
101 if (bfd_get_error () != bfd_error_system_call)
102 bfd_set_error (bfd_error_wrong_format);
106 anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
108 /* Normally we just compare for the magic number.
109 However, a bunch of Adobe tools aren't fixed up yet; they generate
110 files using ZMAGIC(!).
111 If the environment variable GNUTARGET is set to "a.out.adobe", we will
112 take just about any a.out file as an Adobe a.out file. FIXME! */
114 if (N_BADMAG (anexec)) {
115 extern char *getenv ();
117 targ = getenv ("GNUTARGET");
118 if (targ && !strcmp (targ, a_out_adobe_vec.name))
119 ; /* Just continue anyway, if specifically set to this format */
122 bfd_set_error (bfd_error_wrong_format);
127 aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec);
128 return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_callback);
132 /* Finish up the opening of a b.out file for reading. Fill in all the
133 fields that are not handled by common code. */
135 static const bfd_target *
136 aout_adobe_callback (abfd)
139 struct internal_exec *execp = exec_hdr (abfd);
141 struct external_segdesc ext[1];
143 char try_again[30]; /* name and number */
148 /* Architecture and machine type -- unknown in this format. */
149 bfd_set_arch_mach(abfd, bfd_arch_unknown, 0);
151 /* The positions of the string table and symbol table. */
152 obj_str_filepos (abfd) = N_STROFF (*execp);
153 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
155 /* Suck up the section information from the file, one section at a time. */
158 if (bfd_read ((PTR) ext, 1, sizeof (*ext), abfd) != sizeof (*ext)) {
159 if (bfd_get_error () != bfd_error_system_call)
160 bfd_set_error (bfd_error_wrong_format);
163 switch (ext->e_type[0]) {
165 section_name = ".text";
166 flags = SEC_CODE | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
170 section_name = ".data";
171 flags = SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
175 section_name = ".bss";
176 flags = SEC_DATA | SEC_HAS_CONTENTS;
180 goto no_more_sections;
183 (*_bfd_error_handler)
184 ("%s: Unknown section type in a.out.adobe file: %x\n",
185 bfd_get_filename (abfd), ext->e_type[0]);
186 goto no_more_sections;
189 /* First one is called ".text" or whatever; subsequent ones are
190 ".text1", ".text2", ... */
192 bfd_set_error (bfd_error_no_error);
193 sect = bfd_make_section (abfd, section_name);
196 if (bfd_get_error () != bfd_error_no_error)
197 return 0; /* Some other error -- slide into the sunset */
198 sprintf (try_again, "%s%d", section_name, ++trynum);
199 sect = bfd_make_section (abfd, try_again);
202 /* Fix the name, if it is a sprintf'd name. */
203 if (sect->name == try_again) {
204 newname = (char *) bfd_zalloc(abfd, strlen (sect->name));
207 strcpy (newname, sect->name);
208 sect->name = newname;
211 /* Now set the section's attributes. */
212 bfd_set_section_flags (abfd, sect, flags);
213 sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */
214 | ext->e_size[1] << 8)
216 sect->_cooked_size = sect->_raw_size;
217 sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase);
218 sect->filepos = bfd_h_get_32 (abfd, ext->e_filebase);
219 /* FIXME XXX alignment? */
221 /* Set relocation information for first section of each type. */
222 if (trynum == 0) switch (ext->e_type[0]) {
224 sect->rel_filepos = N_TRELOFF (*execp);
225 sect->reloc_count = execp->a_trsize;
229 sect->rel_filepos = N_DRELOFF (*execp);
230 sect->reloc_count = execp->a_drsize;
236 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
237 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
238 adata(abfd).page_size = 1; /* Not applicable. */
239 adata(abfd).segment_size = 1; /* Not applicable. */
240 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
245 struct bout_data_struct {
247 struct internal_exec e;
251 aout_adobe_mkobject (abfd)
254 struct bout_data_struct *rawptr;
256 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
260 abfd->tdata.bout_data = rawptr;
261 exec_hdr (abfd) = &rawptr->e;
263 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
264 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
265 adata(abfd).page_size = 1; /* Not applicable. */
266 adata(abfd).segment_size = 1; /* Not applicable. */
267 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
274 aout_adobe_write_object_contents (abfd)
277 struct external_exec swapped_hdr;
278 static struct external_segdesc sentinel[1]; /* Initialized to zero */
281 exec_hdr (abfd)->a_info = ZMAGIC;
283 /* Calculate text size as total of text sections, etc. */
285 exec_hdr (abfd)->a_text = 0;
286 exec_hdr (abfd)->a_data = 0;
287 exec_hdr (abfd)->a_bss = 0;
288 exec_hdr (abfd)->a_trsize = 0;
289 exec_hdr (abfd)->a_drsize = 0;
291 for (sect = abfd->sections; sect; sect = sect->next) {
292 if (sect->flags & SEC_CODE) {
293 exec_hdr (abfd)->a_text += sect->_raw_size;
294 exec_hdr (abfd)->a_trsize += sect->reloc_count *
295 sizeof (struct reloc_std_external);
296 } else if (sect->flags & SEC_DATA) {
297 exec_hdr (abfd)->a_data += sect->_raw_size;
298 exec_hdr (abfd)->a_drsize += sect->reloc_count *
299 sizeof (struct reloc_std_external);
300 } else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD)) {
301 exec_hdr (abfd)->a_bss += sect->_raw_size;
305 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
306 * sizeof (struct external_nlist);
307 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
309 aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
311 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
312 || (bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
316 /* Now write out the section information. Text first, data next, rest
319 for (sect = abfd->sections; sect; sect = sect->next) {
320 if (sect->flags & SEC_CODE) {
321 aout_adobe_write_section (abfd, sect);
324 for (sect = abfd->sections; sect; sect = sect->next) {
325 if (sect->flags & SEC_DATA) {
326 aout_adobe_write_section (abfd, sect);
329 for (sect = abfd->sections; sect; sect = sect->next) {
330 if (!(sect->flags & (SEC_CODE|SEC_DATA))) {
331 aout_adobe_write_section (abfd, sect);
335 /* Write final `sentinel` section header (with type of 0). */
336 if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd)
337 != sizeof (*sentinel))
340 /* Now write out reloc info, followed by syms and strings */
341 if (bfd_get_symcount (abfd) != 0)
343 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
347 if (! aout_32_write_syms (abfd))
350 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*exec_hdr(abfd))), SEEK_SET)
354 for (sect = abfd->sections; sect; sect = sect->next) {
355 if (sect->flags & SEC_CODE) {
356 if (!aout_32_squirt_out_relocs (abfd, sect))
361 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*exec_hdr(abfd))), SEEK_SET)
365 for (sect = abfd->sections; sect; sect = sect->next) {
366 if (sect->flags & SEC_DATA) {
367 if (!aout_32_squirt_out_relocs (abfd, sect))
376 aout_adobe_write_section (abfd, sect)
384 aout_adobe_set_section_contents (abfd, section, location, offset, count)
391 file_ptr section_start;
394 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
396 /* Assign file offsets to sections. Text sections are first, and
397 are contiguous. Then data sections. Everything else at the end. */
399 section_start = N_TXTOFF (ignore<-->me);
401 for (sect = abfd->sections; sect; sect = sect->next) {
402 if (sect->flags & SEC_CODE) {
403 sect->filepos = section_start;
404 /* FIXME: Round to alignment */
405 section_start += sect->_raw_size;
409 for (sect = abfd->sections; sect; sect = sect->next) {
410 if (sect->flags & SEC_DATA) {
411 sect->filepos = section_start;
412 /* FIXME: Round to alignment */
413 section_start += sect->_raw_size;
417 for (sect = abfd->sections; sect; sect = sect->next) {
418 if (sect->flags & SEC_HAS_CONTENTS &&
419 !(sect->flags & (SEC_CODE|SEC_DATA))) {
420 sect->filepos = section_start;
421 /* FIXME: Round to alignment */
422 section_start += sect->_raw_size;
427 /* regardless, once we know what we're doing, we might as well get going */
428 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
432 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
438 aout_adobe_set_arch_mach (abfd, arch, machine)
440 enum bfd_architecture arch;
441 unsigned long machine;
443 if (! bfd_default_set_arch_mach (abfd, arch, machine))
446 if (arch == bfd_arch_unknown
447 || arch == bfd_arch_m68k)
454 aout_adobe_sizeof_headers (ignore_abfd, ignore)
458 return sizeof(struct internal_exec);
464 /* Build the transfer vector for Adobe A.Out files. */
466 #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
468 #define aout_32_bfd_make_debug_symbol \
469 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
471 #define aout_32_bfd_reloc_type_lookup \
472 ((reloc_howto_type *(*) \
473 PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
475 #define aout_32_set_arch_mach aout_adobe_set_arch_mach
476 #define aout_32_set_section_contents aout_adobe_set_section_contents
478 #define aout_32_sizeof_headers aout_adobe_sizeof_headers
479 #define aout_32_bfd_get_relocated_section_contents \
480 bfd_generic_get_relocated_section_contents
481 #define aout_32_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
482 #define aout_32_bfd_relax_section bfd_generic_relax_section
483 #define aout_32_bfd_link_hash_table_create \
484 _bfd_generic_link_hash_table_create
485 #define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
486 #define aout_32_bfd_final_link _bfd_generic_final_link
487 #define aout_32_bfd_link_split_section _bfd_generic_link_split_section
489 const bfd_target a_out_adobe_vec =
491 "a.out.adobe", /* name */
492 bfd_target_aout_flavour,
493 true, /* data byte order is unknown (big assumed) */
494 true, /* hdr byte order is big */
495 (HAS_RELOC | EXEC_P | /* object flags */
496 HAS_LINENO | HAS_DEBUG |
497 HAS_SYMS | HAS_LOCALS | WP_TEXT ),
499 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_DATA | SEC_RELOC),
500 '_', /* symbol leading char */
501 ' ', /* ar_pad_char */
502 16, /* ar_max_namelen */
504 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
505 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
506 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
507 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
508 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
509 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
510 {_bfd_dummy_target, aout_adobe_object_p, /* bfd_check_format */
511 bfd_generic_archive_p, _bfd_dummy_target},
512 {bfd_false, aout_adobe_mkobject, /* bfd_set_format */
513 _bfd_generic_mkarchive, bfd_false},
514 {bfd_false, aout_adobe_write_object_contents, /* bfd_write_contents */
515 _bfd_write_archive_contents, bfd_false},
517 BFD_JUMP_TABLE_GENERIC (aout_32),
518 BFD_JUMP_TABLE_COPY (_bfd_generic),
519 BFD_JUMP_TABLE_CORE (_bfd_nocore),
520 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
521 BFD_JUMP_TABLE_SYMBOLS (aout_32),
522 BFD_JUMP_TABLE_RELOCS (aout_32),
523 BFD_JUMP_TABLE_WRITE (aout_32),
524 BFD_JUMP_TABLE_LINK (aout_32),
525 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),