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 targ = getenv ("GNUTARGET");
116 if (targ && !strcmp (targ, a_out_adobe_vec.name))
117 ; /* Just continue anyway, if specifically set to this format */
120 bfd_set_error (bfd_error_wrong_format);
125 aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec);
126 return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_callback);
130 /* Finish up the opening of a b.out file for reading. Fill in all the
131 fields that are not handled by common code. */
133 static const bfd_target *
134 aout_adobe_callback (abfd)
137 struct internal_exec *execp = exec_hdr (abfd);
139 struct external_segdesc ext[1];
141 char try_again[30]; /* name and number */
146 /* Architecture and machine type -- unknown in this format. */
147 bfd_set_arch_mach(abfd, bfd_arch_unknown, 0);
149 /* The positions of the string table and symbol table. */
150 obj_str_filepos (abfd) = N_STROFF (*execp);
151 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
153 /* Suck up the section information from the file, one section at a time. */
156 if (bfd_read ((PTR) ext, 1, sizeof (*ext), abfd) != sizeof (*ext)) {
157 if (bfd_get_error () != bfd_error_system_call)
158 bfd_set_error (bfd_error_wrong_format);
161 switch (ext->e_type[0]) {
163 section_name = ".text";
164 flags = SEC_CODE | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
168 section_name = ".data";
169 flags = SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
173 section_name = ".bss";
174 flags = SEC_DATA | SEC_HAS_CONTENTS;
178 goto no_more_sections;
181 (*_bfd_error_handler)
182 (_("%s: Unknown section type in a.out.adobe file: %x\n"),
183 bfd_get_filename (abfd), ext->e_type[0]);
184 goto no_more_sections;
187 /* First one is called ".text" or whatever; subsequent ones are
188 ".text1", ".text2", ... */
190 bfd_set_error (bfd_error_no_error);
191 sect = bfd_make_section (abfd, section_name);
194 if (bfd_get_error () != bfd_error_no_error)
195 return 0; /* Some other error -- slide into the sunset */
196 sprintf (try_again, "%s%d", section_name, ++trynum);
197 sect = bfd_make_section (abfd, try_again);
200 /* Fix the name, if it is a sprintf'd name. */
201 if (sect->name == try_again) {
202 newname = (char *) bfd_zalloc(abfd, strlen (sect->name));
205 strcpy (newname, sect->name);
206 sect->name = newname;
209 /* Now set the section's attributes. */
210 bfd_set_section_flags (abfd, sect, flags);
211 sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */
212 | ext->e_size[1] << 8)
214 sect->_cooked_size = sect->_raw_size;
215 sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase);
216 sect->filepos = bfd_h_get_32 (abfd, ext->e_filebase);
217 /* FIXME XXX alignment? */
219 /* Set relocation information for first section of each type. */
220 if (trynum == 0) switch (ext->e_type[0]) {
222 sect->rel_filepos = N_TRELOFF (*execp);
223 sect->reloc_count = execp->a_trsize;
227 sect->rel_filepos = N_DRELOFF (*execp);
228 sect->reloc_count = execp->a_drsize;
234 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
235 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
236 adata(abfd).page_size = 1; /* Not applicable. */
237 adata(abfd).segment_size = 1; /* Not applicable. */
238 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
243 struct bout_data_struct {
245 struct internal_exec e;
249 aout_adobe_mkobject (abfd)
252 struct bout_data_struct *rawptr;
254 rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
258 abfd->tdata.bout_data = rawptr;
259 exec_hdr (abfd) = &rawptr->e;
261 adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
262 adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
263 adata(abfd).page_size = 1; /* Not applicable. */
264 adata(abfd).segment_size = 1; /* Not applicable. */
265 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
272 aout_adobe_write_object_contents (abfd)
275 struct external_exec swapped_hdr;
276 static struct external_segdesc sentinel[1]; /* Initialized to zero */
279 exec_hdr (abfd)->a_info = ZMAGIC;
281 /* Calculate text size as total of text sections, etc. */
283 exec_hdr (abfd)->a_text = 0;
284 exec_hdr (abfd)->a_data = 0;
285 exec_hdr (abfd)->a_bss = 0;
286 exec_hdr (abfd)->a_trsize = 0;
287 exec_hdr (abfd)->a_drsize = 0;
289 for (sect = abfd->sections; sect; sect = sect->next) {
290 if (sect->flags & SEC_CODE) {
291 exec_hdr (abfd)->a_text += sect->_raw_size;
292 exec_hdr (abfd)->a_trsize += sect->reloc_count *
293 sizeof (struct reloc_std_external);
294 } else if (sect->flags & SEC_DATA) {
295 exec_hdr (abfd)->a_data += sect->_raw_size;
296 exec_hdr (abfd)->a_drsize += sect->reloc_count *
297 sizeof (struct reloc_std_external);
298 } else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD)) {
299 exec_hdr (abfd)->a_bss += sect->_raw_size;
303 exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
304 * sizeof (struct external_nlist);
305 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
307 aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
309 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
310 || (bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
314 /* Now write out the section information. Text first, data next, rest
317 for (sect = abfd->sections; sect; sect = sect->next) {
318 if (sect->flags & SEC_CODE) {
319 aout_adobe_write_section (abfd, sect);
322 for (sect = abfd->sections; sect; sect = sect->next) {
323 if (sect->flags & SEC_DATA) {
324 aout_adobe_write_section (abfd, sect);
327 for (sect = abfd->sections; sect; sect = sect->next) {
328 if (!(sect->flags & (SEC_CODE|SEC_DATA))) {
329 aout_adobe_write_section (abfd, sect);
333 /* Write final `sentinel` section header (with type of 0). */
334 if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd)
335 != sizeof (*sentinel))
338 /* Now write out reloc info, followed by syms and strings */
339 if (bfd_get_symcount (abfd) != 0)
341 if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
345 if (! aout_32_write_syms (abfd))
348 if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*exec_hdr(abfd))), SEEK_SET)
352 for (sect = abfd->sections; sect; sect = sect->next) {
353 if (sect->flags & SEC_CODE) {
354 if (!aout_32_squirt_out_relocs (abfd, sect))
359 if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*exec_hdr(abfd))), SEEK_SET)
363 for (sect = abfd->sections; sect; sect = sect->next) {
364 if (sect->flags & SEC_DATA) {
365 if (!aout_32_squirt_out_relocs (abfd, sect))
374 aout_adobe_write_section (abfd, sect)
382 aout_adobe_set_section_contents (abfd, section, location, offset, count)
389 file_ptr section_start;
392 if (abfd->output_has_begun == false) { /* set by bfd.c handler */
394 /* Assign file offsets to sections. Text sections are first, and
395 are contiguous. Then data sections. Everything else at the end. */
397 section_start = N_TXTOFF (ignore<-->me);
399 for (sect = abfd->sections; sect; sect = sect->next) {
400 if (sect->flags & SEC_CODE) {
401 sect->filepos = section_start;
402 /* FIXME: Round to alignment */
403 section_start += sect->_raw_size;
407 for (sect = abfd->sections; sect; sect = sect->next) {
408 if (sect->flags & SEC_DATA) {
409 sect->filepos = section_start;
410 /* FIXME: Round to alignment */
411 section_start += sect->_raw_size;
415 for (sect = abfd->sections; sect; sect = sect->next) {
416 if (sect->flags & SEC_HAS_CONTENTS &&
417 !(sect->flags & (SEC_CODE|SEC_DATA))) {
418 sect->filepos = section_start;
419 /* FIXME: Round to alignment */
420 section_start += sect->_raw_size;
425 /* regardless, once we know what we're doing, we might as well get going */
426 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
430 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
436 aout_adobe_set_arch_mach (abfd, arch, machine)
438 enum bfd_architecture arch;
439 unsigned long machine;
441 if (! bfd_default_set_arch_mach (abfd, arch, machine))
444 if (arch == bfd_arch_unknown
445 || arch == bfd_arch_m68k)
452 aout_adobe_sizeof_headers (ignore_abfd, ignore)
456 return sizeof(struct internal_exec);
462 /* Build the transfer vector for Adobe A.Out files. */
464 #define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
466 #define aout_32_bfd_make_debug_symbol \
467 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
469 #define aout_32_bfd_reloc_type_lookup \
470 ((reloc_howto_type *(*) \
471 PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
473 #define aout_32_set_arch_mach aout_adobe_set_arch_mach
474 #define aout_32_set_section_contents aout_adobe_set_section_contents
476 #define aout_32_sizeof_headers aout_adobe_sizeof_headers
477 #define aout_32_bfd_get_relocated_section_contents \
478 bfd_generic_get_relocated_section_contents
479 #define aout_32_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
480 #define aout_32_bfd_relax_section bfd_generic_relax_section
481 #define aout_32_bfd_gc_sections bfd_generic_gc_sections
482 #define aout_32_bfd_link_hash_table_create \
483 _bfd_generic_link_hash_table_create
484 #define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
485 #define aout_32_bfd_final_link _bfd_generic_final_link
486 #define aout_32_bfd_link_split_section _bfd_generic_link_split_section
488 const bfd_target a_out_adobe_vec =
490 "a.out.adobe", /* name */
491 bfd_target_aout_flavour,
492 BFD_ENDIAN_BIG, /* data byte order is unknown (big assumed) */
493 BFD_ENDIAN_BIG, /* hdr byte order is big */
494 (HAS_RELOC | EXEC_P | /* object flags */
495 HAS_LINENO | HAS_DEBUG |
496 HAS_SYMS | HAS_LOCALS | WP_TEXT ),
498 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_DATA | SEC_RELOC),
499 '_', /* symbol leading char */
500 ' ', /* ar_pad_char */
501 16, /* ar_max_namelen */
503 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
504 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
505 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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, /* hdrs */
509 {_bfd_dummy_target, aout_adobe_object_p, /* bfd_check_format */
510 bfd_generic_archive_p, _bfd_dummy_target},
511 {bfd_false, aout_adobe_mkobject, /* bfd_set_format */
512 _bfd_generic_mkarchive, bfd_false},
513 {bfd_false, aout_adobe_write_object_contents, /* bfd_write_contents */
514 _bfd_write_archive_contents, bfd_false},
516 BFD_JUMP_TABLE_GENERIC (aout_32),
517 BFD_JUMP_TABLE_COPY (_bfd_generic),
518 BFD_JUMP_TABLE_CORE (_bfd_nocore),
519 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
520 BFD_JUMP_TABLE_SYMBOLS (aout_32),
521 BFD_JUMP_TABLE_RELOCS (aout_32),
522 BFD_JUMP_TABLE_WRITE (aout_32),
523 BFD_JUMP_TABLE_LINK (aout_32),
524 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),