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 fprintf (stderr, "Unknown section type in a.out.adobe file: %x\n",
185 goto no_more_sections;
188 /* First one is called ".text" or whatever; subsequent ones are
189 ".text1", ".text2", ... */
191 bfd_set_error (bfd_error_no_error);
192 sect = bfd_make_section (abfd, section_name);
195 if (bfd_get_error () != bfd_error_no_error)
196 return 0; /* Some other error -- slide into the sunset */
197 sprintf (try_again, "%s%d", section_name, ++trynum);
198 sect = bfd_make_section (abfd, try_again);
201 /* Fix the name, if it is a sprintf'd name. */
202 if (sect->name == try_again) {
203 newname = (char *) bfd_zalloc(abfd, strlen (sect->name));
204 if (newname == NULL) {
205 bfd_set_error (bfd_error_no_memory);
208 strcpy (newname, sect->name);
209 sect->name = newname;
212 /* Now set the section's attributes. */
213 bfd_set_section_flags (abfd, sect, flags);
214 sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */
215 | ext->e_size[1] << 8)
217 sect->_cooked_size = sect->_raw_size;
218 sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase);
219 sect->filepos = bfd_h_get_32 (abfd, ext->e_filebase);
220 /* FIXME XXX alignment? */
222 /* Set relocation information for first section of each type. */
223 if (trynum == 0) switch (ext->e_type[0]) {
225 sect->rel_filepos = N_TRELOFF (*execp);
226 sect->reloc_count = execp->a_trsize;
230 sect->rel_filepos = N_DRELOFF (*execp);
231 sect->reloc_count = execp->a_drsize;
237 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
238 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
239 adata(abfd).page_size = 1; /* Not applicable. */
240 adata(abfd).segment_size = 1; /* Not applicable. */
241 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
246 struct bout_data_struct {
248 struct internal_exec e;
252 aout_adobe_mkobject (abfd)
255 struct bout_data_struct *rawptr;
257 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
258 if (rawptr == NULL) {
259 bfd_set_error (bfd_error_no_memory);
263 abfd->tdata.bout_data = rawptr;
264 exec_hdr (abfd) = &rawptr->e;
266 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
267 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
268 adata(abfd).page_size = 1; /* Not applicable. */
269 adata(abfd).segment_size = 1; /* Not applicable. */
270 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
277 aout_adobe_write_object_contents (abfd)
280 struct external_exec swapped_hdr;
281 static struct external_segdesc sentinel[1]; /* Initialized to zero */
284 exec_hdr (abfd)->a_info = ZMAGIC;
286 /* Calculate text size as total of text sections, etc. */
288 exec_hdr (abfd)->a_text = 0;
289 exec_hdr (abfd)->a_data = 0;
290 exec_hdr (abfd)->a_bss = 0;
291 exec_hdr (abfd)->a_trsize = 0;
292 exec_hdr (abfd)->a_drsize = 0;
294 for (sect = abfd->sections; sect; sect = sect->next) {
295 if (sect->flags & SEC_CODE) {
296 exec_hdr (abfd)->a_text += sect->_raw_size;
297 exec_hdr (abfd)->a_trsize += sect->reloc_count *
298 sizeof (struct reloc_std_external);
299 } else if (sect->flags & SEC_DATA) {
300 exec_hdr (abfd)->a_data += sect->_raw_size;
301 exec_hdr (abfd)->a_drsize += sect->reloc_count *
302 sizeof (struct reloc_std_external);
303 } else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD)) {
304 exec_hdr (abfd)->a_bss += sect->_raw_size;
308 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
309 * sizeof (struct external_nlist);
310 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
312 aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
314 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
315 || (bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
319 /* Now write out the section information. Text first, data next, rest
322 for (sect = abfd->sections; sect; sect = sect->next) {
323 if (sect->flags & SEC_CODE) {
324 aout_adobe_write_section (abfd, sect);
327 for (sect = abfd->sections; sect; sect = sect->next) {
328 if (sect->flags & SEC_DATA) {
329 aout_adobe_write_section (abfd, sect);
332 for (sect = abfd->sections; sect; sect = sect->next) {
333 if (!(sect->flags & (SEC_CODE|SEC_DATA))) {
334 aout_adobe_write_section (abfd, sect);
338 /* Write final `sentinel` section header (with type of 0). */
339 if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd)
340 != sizeof (*sentinel))
343 /* Now write out reloc info, followed by syms and strings */
344 if (bfd_get_symcount (abfd) != 0)
346 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
350 if (! aout_32_write_syms (abfd))
353 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*exec_hdr(abfd))), SEEK_SET)
357 for (sect = abfd->sections; sect; sect = sect->next) {
358 if (sect->flags & SEC_CODE) {
359 if (!aout_32_squirt_out_relocs (abfd, sect))
364 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*exec_hdr(abfd))), SEEK_SET)
368 for (sect = abfd->sections; sect; sect = sect->next) {
369 if (sect->flags & SEC_DATA) {
370 if (!aout_32_squirt_out_relocs (abfd, sect))
379 aout_adobe_write_section (abfd, sect)
387 aout_adobe_set_section_contents (abfd, section, location, offset, count)
394 file_ptr section_start;
397 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
399 /* Assign file offsets to sections. Text sections are first, and
400 are contiguous. Then data sections. Everything else at the end. */
402 section_start = N_TXTOFF (ignore<-->me);
404 for (sect = abfd->sections; sect; sect = sect->next) {
405 if (sect->flags & SEC_CODE) {
406 sect->filepos = section_start;
407 /* FIXME: Round to alignment */
408 section_start += sect->_raw_size;
412 for (sect = abfd->sections; sect; sect = sect->next) {
413 if (sect->flags & SEC_DATA) {
414 sect->filepos = section_start;
415 /* FIXME: Round to alignment */
416 section_start += sect->_raw_size;
420 for (sect = abfd->sections; sect; sect = sect->next) {
421 if (sect->flags & SEC_HAS_CONTENTS &&
422 !(sect->flags & (SEC_CODE|SEC_DATA))) {
423 sect->filepos = section_start;
424 /* FIXME: Round to alignment */
425 section_start += sect->_raw_size;
430 /* regardless, once we know what we're doing, we might as well get going */
431 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
435 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
441 aout_adobe_set_arch_mach (abfd, arch, machine)
443 enum bfd_architecture arch;
444 unsigned long machine;
446 if (! bfd_default_set_arch_mach (abfd, arch, machine))
449 if (arch == bfd_arch_unknown
450 || arch == bfd_arch_m68k)
457 aout_adobe_sizeof_headers (ignore_abfd, ignore)
461 return sizeof(struct internal_exec);
467 /* Build the transfer vector for Adobe A.Out files. */
469 #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
471 #define aout_32_bfd_make_debug_symbol \
472 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
474 #define aout_32_bfd_reloc_type_lookup \
475 ((reloc_howto_type *(*) \
476 PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
478 #define aout_32_set_arch_mach aout_adobe_set_arch_mach
479 #define aout_32_set_section_contents aout_adobe_set_section_contents
481 #define aout_32_sizeof_headers aout_adobe_sizeof_headers
482 #define aout_32_bfd_get_relocated_section_contents \
483 bfd_generic_get_relocated_section_contents
484 #define aout_32_bfd_relax_section bfd_generic_relax_section
485 #define aout_32_bfd_link_hash_table_create \
486 _bfd_generic_link_hash_table_create
487 #define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
488 #define aout_32_bfd_final_link _bfd_generic_final_link
489 #define aout_32_bfd_link_split_section _bfd_generic_link_split_section
491 const bfd_target a_out_adobe_vec =
493 "a.out.adobe", /* name */
494 bfd_target_aout_flavour,
495 true, /* data byte order is unknown (big assumed) */
496 true, /* hdr byte order is big */
497 (HAS_RELOC | EXEC_P | /* object flags */
498 HAS_LINENO | HAS_DEBUG |
499 HAS_SYMS | HAS_LOCALS | WP_TEXT ),
501 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_DATA | SEC_RELOC),
502 '_', /* symbol leading char */
503 ' ', /* ar_pad_char */
504 16, /* ar_max_namelen */
506 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
507 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
508 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
509 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
510 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
511 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
512 {_bfd_dummy_target, aout_adobe_object_p, /* bfd_check_format */
513 bfd_generic_archive_p, _bfd_dummy_target},
514 {bfd_false, aout_adobe_mkobject, /* bfd_set_format */
515 _bfd_generic_mkarchive, bfd_false},
516 {bfd_false, aout_adobe_write_object_contents, /* bfd_write_contents */
517 _bfd_write_archive_contents, bfd_false},
519 BFD_JUMP_TABLE_GENERIC (aout_32),
520 BFD_JUMP_TABLE_COPY (_bfd_generic),
521 BFD_JUMP_TABLE_CORE (_bfd_nocore),
522 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
523 BFD_JUMP_TABLE_SYMBOLS (aout_32),
524 BFD_JUMP_TABLE_RELOCS (aout_32),
525 BFD_JUMP_TABLE_WRITE (aout_32),
526 BFD_JUMP_TABLE_LINK (aout_32),
527 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),