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., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 #include "aout/adobe.h"
27 #include "aout/stab_gnu.h"
28 #include "libaout.h" /* BFD a.out internal data structures */
30 extern bfd_target a_out_adobe_vec; /* Forward decl */
32 PROTO (static bfd_target *, aout_adobe_callback, (bfd *));
34 PROTO (boolean, aout_32_slurp_symbol_table, (bfd *abfd));
35 PROTO (boolean , aout_32_write_syms, ());
36 PROTO (static void, aout_adobe_write_section, (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 PROTO(void, aout_adobe_swap_exec_header_in,
43 struct external_exec *raw_bytes,
44 struct internal_exec *execp));
47 aout_adobe_swap_exec_header_in (abfd, raw_bytes, execp)
49 struct external_exec *raw_bytes;
50 struct internal_exec *execp;
52 struct external_exec *bytes = (struct external_exec *)raw_bytes;
54 /* Now fill in fields in the execp, from the bytes in the raw data. */
55 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
56 execp->a_text = GET_WORD (abfd, bytes->e_text);
57 execp->a_data = GET_WORD (abfd, bytes->e_data);
58 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
59 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
60 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
61 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
62 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
65 /* Swaps the information in an internal exec header structure into the
66 supplied buffer ready for writing to disk. */
68 PROTO(void, aout_adobe_swap_exec_header_out,
70 struct internal_exec *execp,
71 struct external_exec *raw_bytes));
73 aout_adobe_swap_exec_header_out (abfd, execp, raw_bytes)
75 struct internal_exec *execp;
76 struct external_exec *raw_bytes;
78 struct external_exec *bytes = (struct external_exec *)raw_bytes;
80 /* Now fill in fields in the raw data, from the fields in the exec struct. */
81 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
82 PUT_WORD (abfd, execp->a_text , bytes->e_text);
83 PUT_WORD (abfd, execp->a_data , bytes->e_data);
84 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
85 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
86 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
87 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
88 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
93 aout_adobe_object_p (abfd)
96 struct internal_exec anexec;
97 struct external_exec exec_bytes;
100 if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
101 != EXEC_BYTES_SIZE) {
102 if (bfd_get_error () != bfd_error_system_call)
103 bfd_set_error (bfd_error_wrong_format);
107 anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
109 /* Normally we just compare for the magic number.
110 However, a bunch of Adobe tools aren't fixed up yet; they generate
111 files using ZMAGIC(!).
112 If the environment variable GNUTARGET is set to "a.out.adobe", we will
113 take just about any a.out file as an Adobe a.out file. FIXME! */
115 if (N_BADMAG (anexec)) {
116 extern char *getenv ();
118 targ = getenv ("GNUTARGET");
119 if (targ && !strcmp (targ, a_out_adobe_vec.name))
120 ; /* Just continue anyway, if specifically set to this format */
123 bfd_set_error (bfd_error_wrong_format);
128 aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec);
129 return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_callback);
133 /* Finish up the opening of a b.out file for reading. Fill in all the
134 fields that are not handled by common code. */
137 aout_adobe_callback (abfd)
140 struct internal_exec *execp = exec_hdr (abfd);
142 struct external_segdesc ext[1];
144 char try_again[30]; /* name and number */
149 /* Architecture and machine type -- unknown in this format. */
150 bfd_set_arch_mach(abfd, bfd_arch_unknown, 0);
152 /* The positions of the string table and symbol table. */
153 obj_str_filepos (abfd) = N_STROFF (*execp);
154 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
156 /* Suck up the section information from the file, one section at a time. */
159 if (bfd_read ((PTR) ext, 1, sizeof (*ext), abfd) != sizeof (*ext)) {
160 if (bfd_get_error () != bfd_error_system_call)
161 bfd_set_error (bfd_error_wrong_format);
164 switch (ext->e_type[0]) {
166 section_name = ".text";
167 flags = SEC_CODE | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
171 section_name = ".data";
172 flags = SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
176 section_name = ".bss";
177 flags = SEC_DATA | SEC_HAS_CONTENTS;
181 goto no_more_sections;
184 fprintf (stderr, "Unknown section type in a.out.adobe file: %x\n",
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));
205 if (newname == NULL) {
206 bfd_set_error (bfd_error_no_memory);
209 strcpy (newname, sect->name);
210 sect->name = newname;
213 /* Now set the section's attributes. */
214 bfd_set_section_flags (abfd, sect, flags);
215 sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */
216 | ext->e_size[1] << 8)
218 sect->_cooked_size = sect->_raw_size;
219 sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase);
220 sect->filepos = bfd_h_get_32 (abfd, ext->e_filebase);
221 /* FIXME XXX alignment? */
223 /* Set relocation information for first section of each type. */
224 if (trynum == 0) switch (ext->e_type[0]) {
226 sect->rel_filepos = N_TRELOFF (*execp);
227 sect->reloc_count = execp->a_trsize;
231 sect->rel_filepos = N_DRELOFF (*execp);
232 sect->reloc_count = execp->a_drsize;
238 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
239 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
240 adata(abfd).page_size = 1; /* Not applicable. */
241 adata(abfd).segment_size = 1; /* Not applicable. */
242 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
247 struct bout_data_struct {
249 struct internal_exec e;
253 aout_adobe_mkobject (abfd)
256 struct bout_data_struct *rawptr;
258 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
259 if (rawptr == NULL) {
260 bfd_set_error (bfd_error_no_memory);
264 abfd->tdata.bout_data = rawptr;
265 exec_hdr (abfd) = &rawptr->e;
267 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
268 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
269 adata(abfd).page_size = 1; /* Not applicable. */
270 adata(abfd).segment_size = 1; /* Not applicable. */
271 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
278 aout_adobe_write_object_contents (abfd)
281 struct external_exec swapped_hdr;
282 static struct external_segdesc sentinel[1]; /* Initialized to zero */
285 exec_hdr (abfd)->a_info = ZMAGIC;
287 /* Calculate text size as total of text sections, etc. */
289 exec_hdr (abfd)->a_text = 0;
290 exec_hdr (abfd)->a_data = 0;
291 exec_hdr (abfd)->a_bss = 0;
292 exec_hdr (abfd)->a_trsize = 0;
293 exec_hdr (abfd)->a_drsize = 0;
295 for (sect = abfd->sections; sect; sect = sect->next) {
296 if (sect->flags & SEC_CODE) {
297 exec_hdr (abfd)->a_text += sect->_raw_size;
298 exec_hdr (abfd)->a_trsize += sect->reloc_count *
299 sizeof (struct reloc_std_external);
300 } else if (sect->flags & SEC_DATA) {
301 exec_hdr (abfd)->a_data += sect->_raw_size;
302 exec_hdr (abfd)->a_drsize += sect->reloc_count *
303 sizeof (struct reloc_std_external);
304 } else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD)) {
305 exec_hdr (abfd)->a_bss += sect->_raw_size;
309 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
310 * sizeof (struct external_nlist);
311 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
313 aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
315 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
316 || (bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
320 /* Now write out the section information. Text first, data next, rest
323 for (sect = abfd->sections; sect; sect = sect->next) {
324 if (sect->flags & SEC_CODE) {
325 aout_adobe_write_section (abfd, sect);
328 for (sect = abfd->sections; sect; sect = sect->next) {
329 if (sect->flags & SEC_DATA) {
330 aout_adobe_write_section (abfd, sect);
333 for (sect = abfd->sections; sect; sect = sect->next) {
334 if (!(sect->flags & (SEC_CODE|SEC_DATA))) {
335 aout_adobe_write_section (abfd, sect);
339 /* Write final `sentinel` section header (with type of 0). */
340 if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd)
341 != sizeof (*sentinel))
344 /* Now write out reloc info, followed by syms and strings */
345 if (bfd_get_symcount (abfd) != 0)
347 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
351 if (! aout_32_write_syms (abfd))
354 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*exec_hdr(abfd))), SEEK_SET)
358 for (sect = abfd->sections; sect; sect = sect->next) {
359 if (sect->flags & SEC_CODE) {
360 if (!aout_32_squirt_out_relocs (abfd, sect))
365 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*exec_hdr(abfd))), SEEK_SET)
369 for (sect = abfd->sections; sect; sect = sect->next) {
370 if (sect->flags & SEC_DATA) {
371 if (!aout_32_squirt_out_relocs (abfd, sect))
380 aout_adobe_write_section (abfd, sect)
388 aout_adobe_set_section_contents (abfd, section, location, offset, count)
391 unsigned char *location;
395 file_ptr section_start;
398 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
400 /* Assign file offsets to sections. Text sections are first, and
401 are contiguous. Then data sections. Everything else at the end. */
403 section_start = N_TXTOFF (ignore<-->me);
405 for (sect = abfd->sections; sect; sect = sect->next) {
406 if (sect->flags & SEC_CODE) {
407 sect->filepos = section_start;
408 /* FIXME: Round to alignment */
409 section_start += sect->_raw_size;
413 for (sect = abfd->sections; sect; sect = sect->next) {
414 if (sect->flags & SEC_DATA) {
415 sect->filepos = section_start;
416 /* FIXME: Round to alignment */
417 section_start += sect->_raw_size;
421 for (sect = abfd->sections; sect; sect = sect->next) {
422 if (sect->flags & SEC_HAS_CONTENTS &&
423 !(sect->flags & (SEC_CODE|SEC_DATA))) {
424 sect->filepos = section_start;
425 /* FIXME: Round to alignment */
426 section_start += sect->_raw_size;
431 /* regardless, once we know what we're doing, we might as well get going */
432 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
436 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
442 aout_adobe_set_arch_mach (abfd, arch, machine)
444 enum bfd_architecture arch;
445 unsigned long machine;
447 bfd_default_set_arch_mach(abfd, arch, machine);
449 if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
456 aout_adobe_sizeof_headers (ignore_abfd, ignore)
460 return sizeof(struct internal_exec);
466 /* Build the transfer vector for Adobe A.Out files. */
468 #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
470 #define aout_32_bfd_make_debug_symbol \
471 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
473 #define aout_32_bfd_reloc_type_lookup \
474 ((CONST struct reloc_howto_struct *(*) \
475 PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
477 #define aout_32_set_arch_mach aout_adobe_set_arch_mach
478 #define aout_32_set_section_contents aout_adobe_set_section_contents
480 #define aout_32_sizeof_headers aout_adobe_sizeof_headers
481 #define aout_32_bfd_get_relocated_section_contents \
482 bfd_generic_get_relocated_section_contents
483 #define aout_32_bfd_relax_section bfd_generic_relax_section
484 #define aout_32_bfd_link_hash_table_create \
485 _bfd_generic_link_hash_table_create
486 #define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
487 #define aout_32_bfd_final_link _bfd_generic_final_link
489 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 */
503 2, /* minumum alignment power */
505 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
506 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
507 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
508 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
509 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
510 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
511 {_bfd_dummy_target, aout_adobe_object_p, /* bfd_check_format */
512 bfd_generic_archive_p, _bfd_dummy_target},
513 {bfd_false, aout_adobe_mkobject, /* bfd_set_format */
514 _bfd_generic_mkarchive, bfd_false},
515 {bfd_false, aout_adobe_write_object_contents, /* bfd_write_contents */
516 _bfd_write_archive_contents, bfd_false},
518 BFD_JUMP_TABLE_GENERIC (aout_32),
519 BFD_JUMP_TABLE_COPY (_bfd_generic),
520 BFD_JUMP_TABLE_CORE (_bfd_nocore),
521 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
522 BFD_JUMP_TABLE_SYMBOLS (aout_32),
523 BFD_JUMP_TABLE_RELOCS (aout_32),
524 BFD_JUMP_TABLE_WRITE (aout_32),
525 BFD_JUMP_TABLE_LINK (aout_32),
526 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),