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Add support for PEF, Mach-O, xSYM
[thirdparty/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b
NC		 1/* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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. */
20
21#include "mach-o.h"
22#include "bfd.h"
23#include "sysdep.h"
24#include "libbfd.h"
25#include "libiberty.h"
26#include <ctype.h>
27
28#ifndef BFD_IO_FUNCS
29#define BFD_IO_FUNCS 0
30#endif
31
32#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
33#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
34#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
35#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
36#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
37#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
38#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
39#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
40#define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
41#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
42#define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup
43#define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
44#define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook
45#define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
46#define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
47#define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno
48#define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line
49#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
50#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
51#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
52#define bfd_mach_o_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
53#define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
54#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
55#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
56#define bfd_mach_o_bfd_relax_section bfd_generic_relax_section
57#define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
58#define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
59#define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols
60#define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms
61#define bfd_mach_o_bfd_final_link _bfd_generic_final_link
62#define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section
63#define bfd_mach_o_set_arch_mach bfd_default_set_arch_mach
64#define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
65#define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
66#define bfd_mach_o_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
67#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
68#define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents
69#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
70#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
71#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
72
73static boolean bfd_mach_o_bfd_copy_private_symbol_data PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
74static boolean bfd_mach_o_bfd_copy_private_section_data PARAMS ((bfd *, asection *, bfd *, asection *));
75static boolean bfd_mach_o_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
76static long bfd_mach_o_count_symbols PARAMS ((bfd *));
77static long bfd_mach_o_get_symtab_upper_bound PARAMS ((bfd *));
78static long bfd_mach_o_get_symtab PARAMS ((bfd *, asymbol **));
79static void bfd_mach_o_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
80static void bfd_mach_o_print_symbol PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
81static void bfd_mach_o_convert_architecture PARAMS ((bfd_mach_o_cpu_type, bfd_mach_o_cpu_subtype, enum bfd_architecture *, unsigned long *));
82static boolean bfd_mach_o_write_contents PARAMS ((bfd *));
83static int bfd_mach_o_sizeof_headers PARAMS ((bfd *, boolean));
84static asymbol * bfd_mach_o_make_empty_symbol PARAMS ((bfd *));
85static int bfd_mach_o_write_header PARAMS ((bfd *, bfd_mach_o_header *));
86static int bfd_mach_o_read_header PARAMS ((bfd *, bfd_mach_o_header *));
87static asection * bfd_mach_o_make_bfd_section PARAMS ((bfd *, bfd_mach_o_section *));
88static int bfd_mach_o_scan_read_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
89static int bfd_mach_o_scan_write_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma));
90static int bfd_mach_o_scan_write_symtab_symbols PARAMS ((bfd *, bfd_mach_o_load_command *));
91static int bfd_mach_o_scan_write_thread PARAMS ((bfd *, bfd_mach_o_load_command *));
92static int bfd_mach_o_scan_read_dylinker PARAMS ((bfd *, bfd_mach_o_load_command *));
93static int bfd_mach_o_scan_read_dylib PARAMS ((bfd *, bfd_mach_o_load_command *));
94static int bfd_mach_o_scan_read_prebound_dylib PARAMS ((bfd *, bfd_mach_o_load_command *));
95static int bfd_mach_o_scan_read_thread PARAMS ((bfd *, bfd_mach_o_load_command *));
96static int bfd_mach_o_scan_write_symtab PARAMS ((bfd *, bfd_mach_o_load_command *));
97static int bfd_mach_o_scan_read_dysymtab PARAMS ((bfd *, bfd_mach_o_load_command *));
98static int bfd_mach_o_scan_read_symtab PARAMS ((bfd *, bfd_mach_o_load_command *));
99static int bfd_mach_o_scan_read_segment PARAMS ((bfd *, bfd_mach_o_load_command *));
100static int bfd_mach_o_scan_write_segment PARAMS ((bfd *, bfd_mach_o_load_command *));
101static int bfd_mach_o_scan_read_command PARAMS ((bfd *, bfd_mach_o_load_command *));
102static void bfd_mach_o_flatten_sections PARAMS ((bfd *));
103static const char * bfd_mach_o_i386_flavour_string PARAMS ((unsigned int));
104static const char * bfd_mach_o_ppc_flavour_string PARAMS ((unsigned int));
105
106/* The flags field of a section structure is separated into two parts a section
107 type and section attributes. The section types are mutually exclusive (it
108 can only have one type) but the section attributes are not (it may have more
109 than one attribute). */
110
111#define SECTION_TYPE 0x000000ff /* 256 section types. */
112#define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes. */
113
114/* Constants for the section attributes part of the flags field of a section
115 structure. */
116
117#define SECTION_ATTRIBUTES_USR 0xff000000 /* User-settable attributes. */
118#define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* Section contains only true machine instructions. */
119#define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* System setable attributes. */
120#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* Section contains some machine instructions. */
121#define S_ATTR_EXT_RELOC 0x00000200 /* Section has external relocation entries. */
122#define S_ATTR_LOC_RELOC 0x00000100 /* Section has local relocation entries. */
123
124#define N_STAB 0xe0
125#define N_TYPE 0x1e
126#define N_EXT 0x01
127#define N_UNDF 0x0
128#define N_ABS 0x2
129#define N_SECT 0xe
130#define N_INDR 0xa
131
132boolean
133bfd_mach_o_valid (abfd)
134 bfd *abfd;
135{
136 if (abfd == NULL || abfd->xvec == NULL)
137 return 0;
138
139 if (! ((abfd->xvec == &mach_o_be_vec)
140 || (abfd->xvec == &mach_o_le_vec)
141 || (abfd->xvec == &mach_o_fat_vec)))
142 return 0;
143
144 if (abfd->tdata.mach_o_data == NULL)
145 return 0;
146 return 1;
147}
148
149/* Copy any private info we understand from the input symbol
150 to the output symbol. */
151
152static boolean
153bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol)
154 bfd *ibfd ATTRIBUTE_UNUSED;
155 asymbol *isymbol ATTRIBUTE_UNUSED;
156 bfd *obfd ATTRIBUTE_UNUSED;
157 asymbol *osymbol ATTRIBUTE_UNUSED;
158{
159 return true;
160}
161
162/* Copy any private info we understand from the input section
163 to the output section. */
164
165static boolean
166bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection)
167 bfd *ibfd ATTRIBUTE_UNUSED;
168 asection *isection ATTRIBUTE_UNUSED;
169 bfd *obfd ATTRIBUTE_UNUSED;
170 asection *osection ATTRIBUTE_UNUSED;
171{
172 return true;
173}
174
175/* Copy any private info we understand from the input bfd
176 to the output bfd. */
177
178static boolean
179bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd)
180 bfd *ibfd;
181 bfd *obfd;
182{
183 BFD_ASSERT (bfd_mach_o_valid (ibfd));
184 BFD_ASSERT (bfd_mach_o_valid (obfd));
185
186 obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
187 obfd->tdata.mach_o_data->ibfd = ibfd;
188 return true;
189}
190
191static long
192bfd_mach_o_count_symbols (abfd)
193 bfd *abfd;
194{
195 bfd_mach_o_data_struct *mdata = NULL;
196 long nsyms = 0;
197 unsigned long i;
198
199 BFD_ASSERT (bfd_mach_o_valid (abfd));
200 mdata = abfd->tdata.mach_o_data;
201
202 for (i = 0; i < mdata->header.ncmds; i++)
203 if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
204 {
205 bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
206 nsyms += sym->nsyms;
207 }
208
209 return nsyms;
210}
211
212static long
213bfd_mach_o_get_symtab_upper_bound (abfd)
214 bfd *abfd;
215{
216 long nsyms = bfd_mach_o_count_symbols (abfd);
217
218 if (nsyms < 0)
219 return nsyms;
220
221 return ((nsyms + 1) * sizeof (asymbol *));
222}
223
224static long
225bfd_mach_o_get_symtab (abfd, alocation)
226 bfd *abfd;
227 asymbol **alocation;
228{
229 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
230 long nsyms = bfd_mach_o_count_symbols (abfd);
231 asymbol **csym = alocation;
232 unsigned long i, j;
233
234 if (nsyms < 0)
235 return nsyms;
236
237 for (i = 0; i < mdata->header.ncmds; i++)
238 {
239 if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
240 {
241 bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
242
243 if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
244 {
245 fprintf (stderr, "bfd_mach_o_get_symtab: unable to load symbols for section %lu\n", i);
246 return 0;
247 }
248
249 BFD_ASSERT (sym->symbols != NULL);
250
251 for (j = 0; j < sym->nsyms; j++)
252 {
253 BFD_ASSERT (csym < (alocation + nsyms));
254 *csym++ = &sym->symbols[j];
255 }
256 }
257 }
258
259 *csym++ = NULL;
260
261 return nsyms;
262}
263
264static void
265bfd_mach_o_get_symbol_info (abfd, symbol, ret)
266 bfd *abfd ATTRIBUTE_UNUSED;
267 asymbol *symbol;
268 symbol_info *ret;
269{
270 bfd_symbol_info (symbol, ret);
271}
272
273static void
274bfd_mach_o_print_symbol (abfd, afile, symbol, how)
275 bfd *abfd;
276 PTR afile;
277 asymbol *symbol;
278 bfd_print_symbol_type how;
279{
280 FILE *file = (FILE *) afile;
281
282 switch (how)
283 {
284 case bfd_print_symbol_name:
285 fprintf (file, "%s", symbol->name);
286 break;
287 default:
288 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
289 fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
290 }
291}
292
293static void
294bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype)
295 bfd_mach_o_cpu_type mtype;
296 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED;
297 enum bfd_architecture *type;
298 unsigned long *subtype;
299{
300 *subtype = bfd_arch_unknown;
301
302 switch (mtype)
303 {
304 case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
305 case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
306 case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break;
307 case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
308 case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
309 case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
310 case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
311 case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
312 case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break;
313 case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
314 case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
315 case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break;
316 default: *type = bfd_arch_unknown; break;
317 }
318
319 switch (*type)
320 {
321 case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break;
322 case bfd_arch_sparc: *subtype = bfd_mach_sparc; break;
323 default:
324 *subtype = bfd_arch_unknown;
325 }
326}
327
328static boolean
329bfd_mach_o_write_contents (abfd)
330 bfd *abfd;
331{
332 unsigned int i;
333 asection *s;
334
335 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
336
337 /* Write data sections first in case they overlap header data to be
338 written later. */
339
340 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
341 ;
342
343#if 0
344 for (i = 0; i < mdata->header.ncmds; i++)
345 {
346 bfd_mach_o_load_command *cur = &mdata->commands[i];
347 if (cur->type != BFD_MACH_O_LC_SEGMENT)
348 break;
349
350 {
351 bfd_mach_o_segment_command *seg = &cur->command.segment;
352 char buf[1024];
353 bfd_vma nbytes = seg->filesize;
354 bfd_vma curoff = seg->fileoff;
355
356 while (nbytes > 0)
357 {
358 bfd_vma thisread = nbytes;
359
360 if (thisread > 1024)
361 thisread = 1024;
362
363 bfd_seek (abfd, curoff, SEEK_SET);
364 if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
365 return false;
366
367 bfd_seek (abfd, curoff, SEEK_SET);
368 if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
369 return false;
370
371 nbytes -= thisread;
372 curoff += thisread;
373 }
374 }
375 }
376#endif
377
378 /* Now write header information. */
379 if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
380 return false;
381
382 for (i = 0; i < mdata->header.ncmds; i++)
383 {
384 unsigned char buf[8];
385 bfd_mach_o_load_command *cur = &mdata->commands[i];
386 unsigned long typeflag;
387
388 typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
389
390 bfd_h_put_32 (abfd, typeflag, buf);
391 bfd_h_put_32 (abfd, cur->len, buf + 4);
392
393 bfd_seek (abfd, cur->offset, SEEK_SET);
394 if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
395 return false;
396
397 switch (cur->type)
398 {
399 case BFD_MACH_O_LC_SEGMENT:
400 if (bfd_mach_o_scan_write_segment (abfd, cur) != 0)
401 return false;
402 break;
403 case BFD_MACH_O_LC_SYMTAB:
404 if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0)
405 return false;
406 break;
407 case BFD_MACH_O_LC_SYMSEG:
408 break;
409 case BFD_MACH_O_LC_THREAD:
410 case BFD_MACH_O_LC_UNIXTHREAD:
411 if (bfd_mach_o_scan_write_thread (abfd, cur) != 0)
412 return false;
413 break;
414 case BFD_MACH_O_LC_LOADFVMLIB:
415 case BFD_MACH_O_LC_IDFVMLIB:
416 case BFD_MACH_O_LC_IDENT:
417 case BFD_MACH_O_LC_FVMFILE:
418 case BFD_MACH_O_LC_PREPAGE:
419 case BFD_MACH_O_LC_DYSYMTAB:
420 case BFD_MACH_O_LC_LOAD_DYLIB:
421 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
422 case BFD_MACH_O_LC_ID_DYLIB:
423 case BFD_MACH_O_LC_LOAD_DYLINKER:
424 case BFD_MACH_O_LC_ID_DYLINKER:
425 case BFD_MACH_O_LC_PREBOUND_DYLIB:
426 case BFD_MACH_O_LC_ROUTINES:
427 case BFD_MACH_O_LC_SUB_FRAMEWORK:
428 break;
429 default:
430 fprintf (stderr,
431 "unable to write unknown load command 0x%lx\n",
432 (long) cur->type);
433 return false;
434 }
435 }
436
437 return true;
438}
439
440static int
441bfd_mach_o_sizeof_headers (a, b)
442 bfd *a ATTRIBUTE_UNUSED;
443 boolean b ATTRIBUTE_UNUSED;
444{
445 return 0;
446}
447
448/* Make an empty symbol. This is required only because
449 bfd_make_section_anyway wants to create a symbol for the section. */
450
451static asymbol *
452bfd_mach_o_make_empty_symbol (abfd)
453 bfd *abfd;
454{
455 asymbol *new;
456
457 new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
458 if (new == NULL)
459 return new;
460 new->the_bfd = abfd;
461 return new;
462}
463
464static int
465bfd_mach_o_write_header (abfd, header)
466 bfd *abfd;
467 bfd_mach_o_header *header;
468{
469 unsigned char buf[28];
470
471 bfd_h_put_32 (abfd, header->magic, buf + 0);
472 bfd_h_put_32 (abfd, header->cputype, buf + 4);
473 bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
474 bfd_h_put_32 (abfd, header->filetype, buf + 12);
475 bfd_h_put_32 (abfd, header->ncmds, buf + 16);
476 bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
477 bfd_h_put_32 (abfd, header->flags, buf + 24);
478
479 bfd_seek (abfd, 0, SEEK_SET);
480 if (bfd_bwrite ((PTR) buf, 28, abfd) != 28)
481 return -1;
482
483 return 0;
484}
485
486static int
487bfd_mach_o_read_header (abfd, header)
488 bfd *abfd;
489 bfd_mach_o_header *header;
490{
491 unsigned char buf[28];
492 bfd_vma (*get32) PARAMS ((const bfd_byte *)) = NULL;
493
494 bfd_seek (abfd, 0, SEEK_SET);
495
496 if (bfd_bread ((PTR) buf, 28, abfd) != 28)
497 return -1;
498
499 if (bfd_getb32 (buf) == 0xfeedface)
500 {
501 header->byteorder = BFD_ENDIAN_BIG;
502 header->magic = 0xfeedface;
503 get32 = bfd_getb32;
504 }
505 else if (bfd_getl32 (buf) == 0xfeedface)
506 {
507 header->byteorder = BFD_ENDIAN_LITTLE;
508 header->magic = 0xfeedface;
509 get32 = bfd_getl32;
510 }
511 else
512 {
513 header->byteorder = BFD_ENDIAN_UNKNOWN;
514 return -1;
515 }
516
517 header->cputype = (*get32) (buf + 4);
518 header->cpusubtype = (*get32) (buf + 8);
519 header->filetype = (*get32) (buf + 12);
520 header->ncmds = (*get32) (buf + 16);
521 header->sizeofcmds = (*get32) (buf + 20);
522 header->flags = (*get32) (buf + 24);
523
524 return 0;
525}
526
527static asection *
528bfd_mach_o_make_bfd_section (abfd, section)
529 bfd *abfd;
530 bfd_mach_o_section *section;
531{
532 asection *bfdsec;
533 char *sname;
534 const char *prefix = "LC_SEGMENT";
535 unsigned int snamelen;
536
537 snamelen = strlen (prefix) + 1
538 + strlen (section->segname) + 1
539 + strlen (section->sectname) + 1;
540
541 sname = (char *) bfd_alloc (abfd, snamelen);
542 if (sname == NULL)
543 return NULL;
544 sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
545
546 bfdsec = bfd_make_section_anyway (abfd, sname);
547 if (bfdsec == NULL)
548 return NULL;
549
550 bfdsec->vma = section->addr;
551 bfdsec->lma = section->addr;
552 bfdsec->_raw_size = section->size;
553 bfdsec->filepos = section->offset;
554 bfdsec->alignment_power = section->align;
555
556 if (section->flags & BFD_MACH_O_S_ZEROFILL)
557 bfdsec->flags = SEC_ALLOC;
558 else
559 bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
560
561 return bfdsec;
562}
563
564static int
565bfd_mach_o_scan_read_section (abfd, section, offset)
566 bfd *abfd;
567 bfd_mach_o_section *section;
568 bfd_vma offset;
569{
570 unsigned char buf[68];
571
572 bfd_seek (abfd, offset, SEEK_SET);
573 if (bfd_bread ((PTR) buf, 68, abfd) != 68)
574 return -1;
575
576 memcpy (section->sectname, buf, 16);
577 section->sectname[16] = '\0';
578 memcpy (section->segname, buf + 16, 16);
579 section->segname[16] = '\0';
580 section->addr = bfd_h_get_32 (abfd, buf + 32);
581 section->size = bfd_h_get_32 (abfd, buf + 36);
582 section->offset = bfd_h_get_32 (abfd, buf + 40);
583 section->align = bfd_h_get_32 (abfd, buf + 44);
584 section->reloff = bfd_h_get_32 (abfd, buf + 48);
585 section->nreloc = bfd_h_get_32 (abfd, buf + 52);
586 section->flags = bfd_h_get_32 (abfd, buf + 56);
587 section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
588 section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
589 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section);
590
591 if (section->bfdsection == NULL)
592 return -1;
593
594 return 0;
595}
596
597static int
598bfd_mach_o_scan_write_section (abfd, section, offset)
599 bfd *abfd;
600 bfd_mach_o_section *section;
601 bfd_vma offset;
602{
603 unsigned char buf[68];
604
605 memcpy (buf, section->sectname, 16);
606 memcpy (buf + 16, section->segname, 16);
607 bfd_h_put_32 (abfd, section->addr, buf + 32);
608 bfd_h_put_32 (abfd, section->size, buf + 36);
609 bfd_h_put_32 (abfd, section->offset, buf + 40);
610 bfd_h_put_32 (abfd, section->align, buf + 44);
611 bfd_h_put_32 (abfd, section->reloff, buf + 48);
612 bfd_h_put_32 (abfd, section->nreloc, buf + 52);
613 bfd_h_put_32 (abfd, section->flags, buf + 56);
614 /* bfd_h_put_32 (abfd, section->reserved1, buf + 60); */
615 /* bfd_h_put_32 (abfd, section->reserved2, buf + 64); */
616
617 bfd_seek (abfd, offset, SEEK_SET);
618 if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
619 return -1;
620
621 return 0;
622}
623
624static int
625bfd_mach_o_scan_write_symtab_symbols (abfd, command)
626 bfd *abfd;
627 bfd_mach_o_load_command *command;
628{
629 bfd_mach_o_symtab_command *sym = &command->command.symtab;
630 asymbol *s = NULL;
631 unsigned long i;
632
633 for (i = 0; i < sym->nsyms; i++)
634 {
635 unsigned char buf[12];
636 bfd_vma symoff = sym->symoff + (i * 12);
637 unsigned char ntype = 0;
638 unsigned char nsect = 0;
639 short ndesc = 0;
640
641 s = &sym->symbols[i];
642
643 /* Don't set this from the symbol information; use stored values. */
644#if 0
645 if (s->flags & BSF_GLOBAL)
646 ntype |= N_EXT;
647 if (s->flags & BSF_DEBUGGING)
648 ntype |= N_STAB;
649
650 if (s->section == bfd_und_section_ptr)
651 ntype |= N_UNDF;
652 else if (s->section == bfd_abs_section_ptr)
653 ntype |= N_ABS;
654 else
655 ntype |= N_SECT;
656#endif
657
658 /* Instead just set from the stored values. */
659 ntype = (s->udata.i >> 24) & 0xff;
660 nsect = (s->udata.i >> 16) & 0xff;
661 ndesc = s->udata.i & 0xffff;
662
663 bfd_h_put_32 (abfd, s->name - sym->strtab, buf);
664 bfd_h_put_8 (abfd, ntype, buf + 4);
665 bfd_h_put_8 (abfd, nsect, buf + 5);
666 bfd_h_put_16 (abfd, ndesc, buf + 6);
667 bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8);
668
669 bfd_seek (abfd, symoff, SEEK_SET);
670 if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
671 {
672 fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
673 12, (unsigned long) symoff);
674 return -1;
675 }
676 }
677
678 return 0;
679}
680
681int
682bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i)
683 bfd *abfd;
684 bfd_mach_o_symtab_command *sym;
685 asymbol *s;
686 unsigned long i;
687{
688 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
689 bfd_vma symoff = sym->symoff + (i * 12);
690 unsigned char buf[12];
691 unsigned char type = -1;
692 unsigned char section = -1;
693 short desc = -1;
694 long value = -1;
695 unsigned long stroff = -1;
696 unsigned int symtype = -1;
697
698 BFD_ASSERT (sym->strtab != NULL);
699
700 bfd_seek (abfd, symoff, SEEK_SET);
701 if (bfd_bread ((PTR) buf, 12, abfd) != 12)
702 {
703 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
704 12, (unsigned long) symoff);
705 return -1;
706 }
707
708 stroff = bfd_h_get_32 (abfd, buf);
709 type = bfd_h_get_8 (abfd, buf + 4);
710 symtype = (type & 0x0e);
711 section = bfd_h_get_8 (abfd, buf + 5) - 1;
712 desc = bfd_h_get_16 (abfd, buf + 6);
713 value = bfd_h_get_32 (abfd, buf + 8);
714
715 if (stroff >= sym->strsize)
716 {
717 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
718 (unsigned long) stroff, (unsigned long) sym->strsize);
719 return -1;
720 }
721
722 s->the_bfd = abfd;
723 s->name = sym->strtab + stroff;
724 s->value = value;
725 s->udata.i = (type << 24) | (section << 16) | desc;
726 s->flags = 0x0;
727
728 if (type & BFD_MACH_O_N_STAB)
729 {
730 s->flags |= BSF_DEBUGGING;
731 s->section = bfd_und_section_ptr;
732 }
733 else
734 {
735 if (type & BFD_MACH_O_N_PEXT)
736 {
737 type &= ~BFD_MACH_O_N_PEXT;
738 s->flags |= BSF_GLOBAL;
739 }
740
741 if (type & BFD_MACH_O_N_EXT)
742 {
743 type &= ~BFD_MACH_O_N_EXT;
744 s->flags |= BSF_GLOBAL;
745 }
746
747 switch (symtype)
748 {
749 case BFD_MACH_O_N_UNDF:
750 s->section = bfd_und_section_ptr;
751 break;
752 case BFD_MACH_O_N_PBUD:
753 s->section = bfd_und_section_ptr;
754 break;
755 case BFD_MACH_O_N_ABS:
756 s->section = bfd_abs_section_ptr;
757 break;
758 case BFD_MACH_O_N_SECT:
759 if ((section > 0) && (section <= mdata->nsects))
760 {
761 s->section = mdata->sections[section - 1]->bfdsection;
762 s->value = s->value - mdata->sections[section - 1]->addr;
763 }
764 else
765 {
766 /* Mach-O uses 0 to mean "no section"; not an error. */
767 if (section != 0)
768 {
769 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
770 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
771 s->name, section, mdata->nsects);
772 }
773 s->section = bfd_und_section_ptr;
774 }
775 break;
776 case BFD_MACH_O_N_INDR:
777 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
778 "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
779 s->name);
780 s->section = bfd_und_section_ptr;
781 break;
782 default:
783 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
784 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
785 s->name, symtype);
786 s->section = bfd_und_section_ptr;
787 break;
788 }
789 }
790
791 return 0;
792}
793
794int
795bfd_mach_o_scan_read_symtab_strtab (abfd, sym)
796 bfd *abfd;
797 bfd_mach_o_symtab_command *sym;
798{
799 BFD_ASSERT (sym->strtab == NULL);
800
801 if (abfd->flags & BFD_IN_MEMORY)
802 {
803 struct bfd_in_memory *b;
804
805 b = (struct bfd_in_memory *) abfd->iostream;
806
807 if ((sym->stroff + sym->strsize) > b->size)
808 {
809 bfd_set_error (bfd_error_file_truncated);
810 return -1;
811 }
812 sym->strtab = b->buffer + sym->stroff;
813 return 0;
814 }
815
816 sym->strtab = bfd_alloc (abfd, sym->strsize);
817 if (sym->strtab == NULL)
818 return -1;
819
820 bfd_seek (abfd, sym->stroff, SEEK_SET);
821 if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
822 {
823 fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
824 sym->strsize, sym->stroff);
825 return -1;
826 }
827
828 return 0;
829}
830
831int
832bfd_mach_o_scan_read_symtab_symbols (abfd, sym)
833 bfd *abfd;
834 bfd_mach_o_symtab_command *sym;
835{
836 unsigned long i;
837 int ret;
838
839 BFD_ASSERT (sym->symbols == NULL);
840 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
841
842 if (sym->symbols == NULL)
843 {
844 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
845 return -1;
846 }
847
848 ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
849 if (ret != 0)
850 return ret;
851
852 for (i = 0; i < sym->nsyms; i++)
853 {
854 ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
855 if (ret != 0)
856 return ret;
857 }
858
859 return 0;
860}
861
862int
863bfd_mach_o_scan_read_dysymtab_symbol (abfd, dysym, sym, s, i)
864 bfd *abfd;
865 bfd_mach_o_dysymtab_command *dysym;
866 bfd_mach_o_symtab_command *sym;
867 asymbol *s;
868 unsigned long i;
869{
870 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
871 unsigned long symindex;
872 unsigned char buf[4];
873
874 BFD_ASSERT (i < dysym->nindirectsyms);
875
876 bfd_seek (abfd, isymoff, SEEK_SET);
877 if (bfd_bread ((PTR) buf, 4, abfd) != 4)
878 {
879 fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
880 (unsigned long) 4, isymoff);
881 return -1;
882 }
883 symindex = bfd_h_get_32 (abfd, buf);
884
885 return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
886}
887
888static const char *
889bfd_mach_o_i386_flavour_string (flavour)
890 unsigned int flavour;
891{
892 switch ((int) flavour)
893 {
894 case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE";
895 case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE";
896 case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE";
897 case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE";
898 case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE";
899 case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE";
900 case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE";
901 case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE";
902 case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE";
903 case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE";
904 case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE";
905 case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE";
906 default: return "UNKNOWN";
907 }
908}
909
910static const char *
911bfd_mach_o_ppc_flavour_string (flavour)
912 unsigned int flavour;
913{
914 switch ((int) flavour)
915 {
916 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
917 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
918 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
919 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
920 default: return "UNKNOWN";
921 }
922}
923
924static int
925bfd_mach_o_scan_write_thread (abfd, command)
926 bfd *abfd;
927 bfd_mach_o_load_command *command;
928{
929 bfd_mach_o_thread_command *cmd = &command->command.thread;
930 unsigned int i;
931 unsigned char buf[8];
932 bfd_vma offset;
933 unsigned int nflavours;
934
935 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
936 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
937
938 offset = 8;
939 nflavours = 0;
940 for (i = 0; i < cmd->nflavours; i++)
941 {
942 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
943 BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
944
945 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
946 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
947
948 bfd_seek (abfd, command->offset + offset, SEEK_SET);
949 if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
950 return -1;
951
952 offset += cmd->flavours[i].size + 8;
953 }
954
955 return 0;
956}
957
958static int
959bfd_mach_o_scan_read_dylinker (abfd, command)
960 bfd *abfd;
961 bfd_mach_o_load_command *command;
962{
963 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
964 unsigned char buf[4];
965 unsigned int nameoff;
966 asection *bfdsec;
967 char *sname;
968 const char *prefix;
969
970 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
971 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
972
973 bfd_seek (abfd, command->offset + 8, SEEK_SET);
974 if (bfd_bread ((PTR) buf, 4, abfd) != 4)
975 return -1;
976
977 nameoff = bfd_h_get_32 (abfd, buf + 0);
978
979 cmd->name_offset = command->offset + nameoff;
980 cmd->name_len = command->len - nameoff;
981
982 if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)
983 prefix = "LC_LOAD_DYLINKER";
984 else if (command->type == BFD_MACH_O_LC_ID_DYLINKER)
985 prefix = "LC_ID_DYLINKER";
986 else
987 abort ();
988
989 sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
990 if (sname == NULL)
991 return -1;
992 strcpy (sname, prefix);
993
994 bfdsec = bfd_make_section_anyway (abfd, sname);
995 if (bfdsec == NULL)
996 return -1;
997
998 bfdsec->vma = 0;
999 bfdsec->lma = 0;
1000 bfdsec->_raw_size = command->len - 8;
1001 bfdsec->filepos = command->offset + 8;
1002 bfdsec->alignment_power = 0;
1003 bfdsec->flags = SEC_HAS_CONTENTS;
1004
1005 cmd->section = bfdsec;
1006
1007 return 0;
1008}
1009
1010static int
1011bfd_mach_o_scan_read_dylib (abfd, command)
1012 bfd *abfd;
1013 bfd_mach_o_load_command *command;
1014{
1015 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1016 unsigned char buf[16];
1017 unsigned int nameoff;
1018 asection *bfdsec;
1019 char *sname;
1020 const char *prefix;
1021
1022 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB)
1023 || (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
1024 || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB));
1025
1026 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1027 if (bfd_bread ((PTR) buf, 16, abfd) != 16)
1028 return -1;
1029
1030 nameoff = bfd_h_get_32 (abfd, buf + 0);
1031 cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1032 cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1033 cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1034
1035 cmd->name_offset = command->offset + nameoff;
1036 cmd->name_len = command->len - nameoff;
1037
1038 if (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
1039 prefix = "LC_LOAD_DYLIB";
1040 else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)
1041 prefix = "LC_LOAD_WEAK_DYLIB";
1042 else if (command->type == BFD_MACH_O_LC_ID_DYLIB)
1043 prefix = "LC_ID_DYLIB";
1044 else
1045 abort ();
1046
1047 sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
1048 if (sname == NULL)
1049 return -1;
1050 strcpy (sname, prefix);
1051
1052 bfdsec = bfd_make_section_anyway (abfd, sname);
1053 if (bfdsec == NULL)
1054 return -1;
1055
1056 bfdsec->vma = 0;
1057 bfdsec->lma = 0;
1058 bfdsec->_raw_size = command->len - 8;
1059 bfdsec->filepos = command->offset + 8;
1060 bfdsec->alignment_power = 0;
1061 bfdsec->flags = SEC_HAS_CONTENTS;
1062
1063 cmd->section = bfdsec;
1064
1065 return 0;
1066}
1067
1068static int
1069bfd_mach_o_scan_read_prebound_dylib (abfd, command)
1070 bfd *abfd ATTRIBUTE_UNUSED;
1071 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED;
1072{
1073 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1074
1075 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1076 return 0;
1077}
1078
1079static int
1080bfd_mach_o_scan_read_thread (abfd, command)
1081 bfd *abfd;
1082 bfd_mach_o_load_command *command;
1083{
1084 bfd_mach_o_data_struct *mdata = NULL;
1085 bfd_mach_o_thread_command *cmd = &command->command.thread;
1086 unsigned char buf[8];
1087 bfd_vma offset;
1088 unsigned int nflavours;
1089 unsigned int i;
1090
1091 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1092 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1093
1094 BFD_ASSERT (bfd_mach_o_valid (abfd));
1095 mdata = abfd->tdata.mach_o_data;
1096
1097 offset = 8;
1098 nflavours = 0;
1099 while (offset != command->len)
1100 {
1101 if (offset >= command->len)
1102 return -1;
1103
1104 bfd_seek (abfd, command->offset + offset, SEEK_SET);
1105
1106 if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1107 return -1;
1108
1109 offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
1110 nflavours++;
1111 }
1112
1113 cmd->flavours =
1114 ((bfd_mach_o_thread_flavour *)
1115 bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)));
1116 if (cmd->flavours == NULL)
1117 return -1;
1118 cmd->nflavours = nflavours;
1119
1120 offset = 8;
1121 nflavours = 0;
1122 while (offset != command->len)
1123 {
1124 if (offset >= command->len)
1125 return -1;
1126
1127 if (nflavours >= cmd->nflavours)
1128 return -1;
1129
1130 bfd_seek (abfd, command->offset + offset, SEEK_SET);
1131
1132 if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1133 return -1;
1134
1135 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
1136 cmd->flavours[nflavours].offset = command->offset + offset + 8;
1137 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
1138 offset += cmd->flavours[nflavours].size + 8;
1139 nflavours++;
1140 }
1141
1142 for (i = 0; i < nflavours; i++)
1143 {
1144 asection *bfdsec;
1145 unsigned int snamelen;
1146 char *sname;
1147 const char *flavourstr;
1148 const char *prefix = "LC_THREAD";
1149 unsigned int i = 0;
1150
1151 switch (mdata->header.cputype)
1152 {
1153 case BFD_MACH_O_CPU_TYPE_POWERPC:
1154 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
1155 break;
1156 case BFD_MACH_O_CPU_TYPE_I386:
1157 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
1158 break;
1159 default:
1160 flavourstr = "UNKNOWN_ARCHITECTURE";
1161 break;
1162 }
1163
1164 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
1165 sname = (char *) bfd_alloc (abfd, snamelen);
1166 if (sname == NULL)
1167 return -1;
1168
1169 for (;;)
1170 {
1171 sprintf (sname, "%s.%s.%u", prefix, flavourstr, i);
1172 if (bfd_get_section_by_name (abfd, sname) == NULL) {
1173 break;
1174 }
1175 i++;
1176 }
1177
1178 bfdsec = bfd_make_section (abfd, sname);
1179
1180 bfdsec->vma = 0;
1181 bfdsec->lma = 0;
1182 bfdsec->_raw_size = cmd->flavours[i].size;
1183 bfdsec->filepos = cmd->flavours[i].offset;
1184 bfdsec->alignment_power = 0x0;
1185 bfdsec->flags = SEC_HAS_CONTENTS;
1186
1187 cmd->section = bfdsec;
1188 }
1189
1190 return 0;
1191}
1192
1193static int
1194bfd_mach_o_scan_write_symtab (abfd, command)
1195 bfd *abfd;
1196 bfd_mach_o_load_command *command;
1197{
1198 bfd_mach_o_symtab_command *seg = &command->command.symtab;
1199 unsigned char buf[16];
1200
1201 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1202
1203 bfd_h_put_32 (abfd, seg->symoff, buf);
1204 bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
1205 bfd_h_put_32 (abfd, seg->stroff, buf + 8);
1206 bfd_h_put_32 (abfd, seg->strsize, buf + 12);
1207
1208 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1209 if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
1210 return -1;
1211
1212 if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
1213 return -1;
1214
1215 return 0;
1216}
1217
1218static int
1219bfd_mach_o_scan_read_dysymtab (abfd, command)
1220 bfd *abfd;
1221 bfd_mach_o_load_command *command;
1222{
1223 bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
1224 unsigned char buf[72];
1225
1226 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1227
1228 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1229 if (bfd_bread ((PTR) buf, 72, abfd) != 72)
1230 return -1;
1231
1232 seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
1233 seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
1234 seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
1235 seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
1236 seg->iundefsym = bfd_h_get_32 (abfd, buf + 16);
1237 seg->nundefsym = bfd_h_get_32 (abfd, buf + 20);
1238 seg->tocoff = bfd_h_get_32 (abfd, buf + 24);
1239 seg->ntoc = bfd_h_get_32 (abfd, buf + 28);
1240 seg->modtaboff = bfd_h_get_32 (abfd, buf + 32);
1241 seg->nmodtab = bfd_h_get_32 (abfd, buf + 36);
1242 seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
1243 seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
1244 seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
1245 seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
1246 seg->extreloff = bfd_h_get_32 (abfd, buf + 56);
1247 seg->nextrel = bfd_h_get_32 (abfd, buf + 60);
1248 seg->locreloff = bfd_h_get_32 (abfd, buf + 64);
1249 seg->nlocrel = bfd_h_get_32 (abfd, buf + 68);
1250
1251 return 0;
1252}
1253
1254static int
1255bfd_mach_o_scan_read_symtab (abfd, command)
1256 bfd *abfd;
1257 bfd_mach_o_load_command *command;
1258{
1259 bfd_mach_o_symtab_command *seg = &command->command.symtab;
1260 unsigned char buf[16];
1261 asection *bfdsec;
1262 char *sname;
1263 const char *prefix = "LC_SYMTAB.stabs";
1264
1265 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1266
1267 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1268 if (bfd_bread ((PTR) buf, 16, abfd) != 16)
1269 return -1;
1270
1271 seg->symoff = bfd_h_get_32 (abfd, buf);
1272 seg->nsyms = bfd_h_get_32 (abfd, buf + 4);
1273 seg->stroff = bfd_h_get_32 (abfd, buf + 8);
1274 seg->strsize = bfd_h_get_32 (abfd, buf + 12);
1275 seg->symbols = NULL;
1276 seg->strtab = NULL;
1277
1278 sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
1279 if (sname == NULL)
1280 return -1;
1281 strcpy (sname, prefix);
1282
1283 bfdsec = bfd_make_section_anyway (abfd, sname);
1284 if (bfdsec == NULL)
1285 return -1;
1286
1287 bfdsec->vma = 0;
1288 bfdsec->lma = 0;
1289 bfdsec->_raw_size = seg->nsyms * 12;
1290 bfdsec->filepos = seg->symoff;
1291 bfdsec->alignment_power = 0;
1292 bfdsec->flags = SEC_HAS_CONTENTS;
1293
1294 seg->stabs_segment = bfdsec;
1295
1296 prefix = "LC_SYMTAB.stabstr";
1297 sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1);
1298 if (sname == NULL)
1299 return -1;
1300 strcpy (sname, prefix);
1301
1302 bfdsec = bfd_make_section_anyway (abfd, sname);
1303 if (bfdsec == NULL)
1304 return -1;
1305
1306 bfdsec->vma = 0;
1307 bfdsec->lma = 0;
1308 bfdsec->_raw_size = seg->strsize;
1309 bfdsec->filepos = seg->stroff;
1310 bfdsec->alignment_power = 0;
1311 bfdsec->flags = SEC_HAS_CONTENTS;
1312
1313 seg->stabstr_segment = bfdsec;
1314
1315 return 0;
1316}
1317
1318static int
1319bfd_mach_o_scan_read_segment (abfd, command)
1320 bfd *abfd;
1321 bfd_mach_o_load_command *command;
1322{
1323 unsigned char buf[48];
1324 bfd_mach_o_segment_command *seg = &command->command.segment;
1325 unsigned long i;
1326 asection *bfdsec;
1327 char *sname;
1328 const char *prefix = "LC_SEGMENT";
1329 unsigned int snamelen;
1330
1331 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1332
1333 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1334 if (bfd_bread ((PTR) buf, 48, abfd) != 48)
1335 return -1;
1336
1337 memcpy (seg->segname, buf, 16);
1338 seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
1339 seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
1340 seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
1341 seg->filesize = bfd_h_get_32 (abfd, buf + 28);
1342 /* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */
1343 /* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */
1344 seg->nsects = bfd_h_get_32 (abfd, buf + 40);
1345 seg->flags = bfd_h_get_32 (abfd, buf + 44);
1346
1347 snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1;
1348 sname = (char *) bfd_alloc (abfd, snamelen);
1349 if (sname == NULL)
1350 return -1;
1351 sprintf (sname, "%s.%s", prefix, seg->segname);
1352
1353 bfdsec = bfd_make_section_anyway (abfd, sname);
1354 if (bfdsec == NULL)
1355 return -1;
1356
1357 bfdsec->vma = seg->vmaddr;
1358 bfdsec->lma = seg->vmaddr;
1359 bfdsec->_raw_size = seg->filesize;
1360 bfdsec->filepos = seg->fileoff;
1361 bfdsec->alignment_power = 0x0;
1362 bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
1363
1364 seg->segment = bfdsec;
1365
1366 if (seg->nsects != 0)
1367 {
1368 seg->sections =
1369 ((bfd_mach_o_section *)
1370 bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)));
1371 if (seg->sections == NULL)
1372 return -1;
1373
1374 for (i = 0; i < seg->nsects; i++)
1375 {
1376 bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
1377
1378 if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i], segoff) != 0)
1379 return -1;
1380 }
1381 }
1382
1383 return 0;
1384}
1385
1386static int
1387bfd_mach_o_scan_write_segment (abfd, command)
1388 bfd *abfd;
1389 bfd_mach_o_load_command *command;
1390{
1391 unsigned char buf[48];
1392 bfd_mach_o_segment_command *seg = &command->command.segment;
1393 unsigned long i;
1394
1395 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1396
1397 memcpy (buf, seg->segname, 16);
1398 bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
1399 bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
1400 bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
1401 bfd_h_put_32 (abfd, seg->filesize, buf + 28);
1402 bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32);
1403 bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36);
1404 bfd_h_put_32 (abfd, seg->nsects, buf + 40);
1405 bfd_h_put_32 (abfd, seg->flags, buf + 44);
1406
1407 bfd_seek (abfd, command->offset + 8, SEEK_SET);
1408 if (bfd_bwrite ((PTR) buf, 48, abfd) != 48)
1409 return -1;
1410
1411 {
1412 char buf[1024];
1413 bfd_vma nbytes = seg->filesize;
1414 bfd_vma curoff = seg->fileoff;
1415
1416 while (nbytes > 0)
1417 {
1418 bfd_vma thisread = nbytes;
1419
1420 if (thisread > 1024)
1421 thisread = 1024;
1422
1423 bfd_seek (abfd, curoff, SEEK_SET);
1424 if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
1425 return -1;
1426
1427 bfd_seek (abfd, curoff, SEEK_SET);
1428 if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
1429 return -1;
1430
1431 nbytes -= thisread;
1432 curoff += thisread;
1433 }
1434 }
1435
1436 for (i = 0; i < seg->nsects; i++)
1437 {
1438 bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
1439
1440 if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
1441 return -1;
1442 }
1443
1444 return 0;
1445}
1446
1447static int
1448bfd_mach_o_scan_read_command (abfd, command)
1449 bfd *abfd;
1450 bfd_mach_o_load_command *command;
1451{
1452 unsigned char buf[8];
1453
1454 bfd_seek (abfd, command->offset, SEEK_SET);
1455 if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1456 return -1;
1457
1458 command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD);
1459 command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD) ? 1 : 0;
1460 command->len = bfd_h_get_32 (abfd, buf + 4);
1461
1462 switch (command->type)
1463 {
1464 case BFD_MACH_O_LC_SEGMENT:
1465 if (bfd_mach_o_scan_read_segment (abfd, command) != 0)
1466 return -1;
1467 break;
1468 case BFD_MACH_O_LC_SYMTAB:
1469 if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
1470 return -1;
1471 break;
1472 case BFD_MACH_O_LC_SYMSEG:
1473 break;
1474 case BFD_MACH_O_LC_THREAD:
1475 case BFD_MACH_O_LC_UNIXTHREAD:
1476 if (bfd_mach_o_scan_read_thread (abfd, command) != 0)
1477 return -1;
1478 break;
1479 case BFD_MACH_O_LC_LOAD_DYLINKER:
1480 case BFD_MACH_O_LC_ID_DYLINKER:
1481 if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0)
1482 return -1;
1483 break;
1484 case BFD_MACH_O_LC_LOAD_DYLIB:
1485 case BFD_MACH_O_LC_ID_DYLIB:
1486 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1487 if (bfd_mach_o_scan_read_dylib (abfd, command) != 0)
1488 return -1;
1489 break;
1490 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1491 if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0)
1492 return -1;
1493 break;
1494 case BFD_MACH_O_LC_LOADFVMLIB:
1495 case BFD_MACH_O_LC_IDFVMLIB:
1496 case BFD_MACH_O_LC_IDENT:
1497 case BFD_MACH_O_LC_FVMFILE:
1498 case BFD_MACH_O_LC_PREPAGE:
1499 case BFD_MACH_O_LC_ROUTINES:
1500 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1501 break;
1502 case BFD_MACH_O_LC_DYSYMTAB:
1503 if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0)
1504 return -1;
1505 break;
1506 case BFD_MACH_O_LC_SUB_UMBRELLA:
1507 case BFD_MACH_O_LC_SUB_CLIENT:
1508 case BFD_MACH_O_LC_SUB_LIBRARY:
1509 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
1510 case BFD_MACH_O_LC_PREBIND_CKSUM:
1511 break;
1512 default:
1513 fprintf (stderr, "unable to read unknown load command 0x%lx\n",
1514 (unsigned long) command->type);
1515 break;
1516 }
1517
1518 return 0;
1519}
1520
1521static void
1522bfd_mach_o_flatten_sections (abfd)
1523 bfd *abfd;
1524{
1525 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
1526 long csect = 0;
1527 unsigned long i, j;
1528
1529 mdata->nsects = 0;
1530
1531 for (i = 0; i < mdata->header.ncmds; i++)
1532 {
1533 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
1534 {
1535 bfd_mach_o_segment_command *seg = &mdata->commands[i].command.segment;
1536 mdata->nsects += seg->nsects;
1537 }
1538 }
1539
1540 mdata->sections = bfd_alloc (abfd, mdata->nsects * sizeof (bfd_mach_o_section *));
1541 csect = 0;
1542
1543 for (i = 0; i < mdata->header.ncmds; i++)
1544 {
1545 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
1546 {
1547 bfd_mach_o_segment_command *seg = &mdata->commands[i].command.segment;
1548
1549 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
1550
1551 for (j = 0; j < seg->nsects; j++)
1552 mdata->sections[csect++] = &seg->sections[j];
1553 }
1554 }
1555}
1556
1557int
1558bfd_mach_o_scan_start_address (abfd)
1559 bfd *abfd;
1560{
1561 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
1562 bfd_mach_o_thread_command *cmd = NULL;
1563 unsigned long i;
1564
1565 for (i = 0; i < mdata->header.ncmds; i++)
1566 {
1567 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
1568 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
1569 {
1570 if (cmd == NULL)
1571 cmd = &mdata->commands[i].command.thread;
1572 else
1573 return 0;
1574 }
1575 }
1576
1577 if (cmd == NULL)
1578 return 0;
1579
1580 for (i = 0; i < cmd->nflavours; i++)
1581 {
1582 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
1583 && (cmd->flavours[i].flavour == (unsigned long) BFD_MACH_O_i386_THREAD_STATE))
1584 {
1585 unsigned char buf[4];
1586
1587 bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET);
1588
1589 if (bfd_bread (buf, 4, abfd) != 4)
1590 return -1;
1591
1592 abfd->start_address = bfd_h_get_32 (abfd, buf);
1593 }
1594 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
1595 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
1596 {
1597 unsigned char buf[4];
1598
1599 bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
1600
1601 if (bfd_bread (buf, 4, abfd) != 4)
1602 return -1;
1603
1604 abfd->start_address = bfd_h_get_32 (abfd, buf);
1605 }
1606 }
1607
1608 return 0;
1609}
1610
1611int
1612bfd_mach_o_scan (abfd, header)
1613 bfd *abfd;
1614 bfd_mach_o_header *header;
1615{
1616 unsigned int i;
1617 bfd_mach_o_data_struct *mdata = NULL;
1618 enum bfd_architecture cputype;
1619 unsigned long cpusubtype;
1620
1621 mdata = ((bfd_mach_o_data_struct *)
1622 bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
1623 if (mdata == NULL)
1624 return -1;
1625
1626 mdata->header = *header;
1627 mdata->symbols = NULL;
1628
1629 abfd->flags = abfd->xvec->object_flags | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS));
1630 abfd->tdata.mach_o_data = mdata;
1631
1632 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, &cputype, &cpusubtype);
1633 if (cputype == bfd_arch_unknown)
1634 {
1635 fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
1636 header->cputype, header->cpusubtype);
1637 return -1;
1638 }
1639
1640 bfd_set_arch_mach (abfd, cputype, cpusubtype);
1641
1642 if (header->ncmds != 0)
1643 {
1644 mdata->commands =
1645 ((bfd_mach_o_load_command *)
1646 bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command)));
1647 if (mdata->commands == NULL)
1648 return -1;
1649
1650 for (i = 0; i < header->ncmds; i++)
1651 {
1652 bfd_mach_o_load_command *cur = &mdata->commands[i];
1653
1654 if (i == 0)
1655 cur->offset = 28;
1656 else
1657 {
1658 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
1659 cur->offset = prev->offset + prev->len;
1660 }
1661
1662 if (bfd_mach_o_scan_read_command (abfd, cur) < 0)
1663 return -1;
1664 }
1665 }
1666
1667 if (bfd_mach_o_scan_start_address (abfd) < 0)
1668 {
1669#if 0
1670 fprintf (stderr, "bfd_mach_o_scan: unable to scan start address: %s\n",
1671 bfd_errmsg (bfd_get_error ()));
1672 abfd->tdata.mach_o_data = NULL;
1673 return -1;
1674#endif
1675 }
1676
1677 bfd_mach_o_flatten_sections (abfd);
1678
1679 return 0;
1680}
1681
1682boolean
1683bfd_mach_o_mkobject (abfd)
1684 bfd *abfd;
1685{
1686 bfd_mach_o_data_struct *mdata = NULL;
1687
1688 mdata = ((bfd_mach_o_data_struct *)
1689 bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)));
1690 if (mdata == NULL)
1691 return false;
1692 abfd->tdata.mach_o_data = mdata;
1693
1694 mdata->header.magic = 0;
1695 mdata->header.cputype = 0;
1696 mdata->header.cpusubtype = 0;
1697 mdata->header.filetype = 0;
1698 mdata->header.ncmds = 0;
1699 mdata->header.sizeofcmds = 0;
1700 mdata->header.flags = 0;
1701 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
1702 mdata->commands = NULL;
1703 mdata->nsymbols = 0;
1704 mdata->symbols = NULL;
1705 mdata->nsects = 0;
1706 mdata->sections = NULL;
1707 mdata->ibfd = NULL;
1708
1709 return true;
1710}
1711
1712const bfd_target *
1713bfd_mach_o_object_p (abfd)
1714 bfd *abfd;
1715{
1716 bfd_mach_o_header header;
1717
1718 if (bfd_mach_o_read_header (abfd, &header) != 0)
1719 {
1720 bfd_set_error (bfd_error_wrong_format);
1721 return NULL;
1722 }
1723
1724 if (! ((header.byteorder == BFD_ENDIAN_BIG)
1725 || (header.byteorder == BFD_ENDIAN_LITTLE)))
1726 {
1727 fprintf (stderr, "unknown header byte-order value 0x%lx\n", (long) header.byteorder);
1728 bfd_set_error (bfd_error_wrong_format);
1729 return NULL;
1730 }
1731
1732 if (! (((header.byteorder == BFD_ENDIAN_BIG)
1733 && (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1734 && (abfd->xvec->header_byteorder == BFD_ENDIAN_BIG))
1735 ||
1736 ((header.byteorder == BFD_ENDIAN_LITTLE)
1737 && (abfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
1738 && (abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))))
1739 {
1740 bfd_set_error (bfd_error_wrong_format);
1741 return NULL;
1742 }
1743
1744 abfd->tdata.mach_o_data = NULL;
1745
1746 if (bfd_mach_o_scan (abfd, &header) != 0)
1747 {
1748 abfd->tdata.mach_o_data = NULL;
1749 bfd_set_error (bfd_error_wrong_format);
1750 return NULL;
1751 }
1752
1753 return abfd->xvec;
1754}
1755
1756const bfd_target *
1757bfd_mach_o_core_p (abfd)
1758 bfd *abfd;
1759{
1760 bfd_mach_o_header header;
1761
1762 bfd_set_error (bfd_error_wrong_format);
1763
1764 if (bfd_mach_o_read_header (abfd, &header) != 0)
1765 return NULL;
1766
1767 if (! ((header.byteorder == BFD_ENDIAN_BIG)
1768 || (header.byteorder == BFD_ENDIAN_LITTLE)))
1769 {
1770 fprintf (stderr, "unknown header byte-order value 0x%lx\n", (long) header.byteorder);
1771 abort ();
1772 }
1773
1774 if (! (((header.byteorder == BFD_ENDIAN_BIG)
1775 && (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1776 && (abfd->xvec->header_byteorder == BFD_ENDIAN_BIG))
1777 ||
1778 ((header.byteorder == BFD_ENDIAN_LITTLE)
1779 && (abfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
1780 && (abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))))
1781 return NULL;
1782
1783 if (header.filetype != BFD_MACH_O_MH_CORE)
1784 return NULL;
1785
1786 abfd->tdata.mach_o_data = NULL;
1787 if (bfd_mach_o_scan (abfd, &header) != 0)
1788 {
1789 abfd->tdata.mach_o_data = NULL;
1790 return NULL;
1791 }
1792
1793 return abfd->xvec;
1794}
1795
1796typedef struct mach_o_fat_archentry
1797{
1798 unsigned long cputype;
1799 unsigned long cpusubtype;
1800 unsigned long offset;
1801 unsigned long size;
1802 unsigned long align;
1803 bfd *abfd;
1804} mach_o_fat_archentry;
1805
1806typedef struct mach_o_fat_data_struct
1807{
1808 unsigned long magic;
1809 unsigned long nfat_arch;
1810 mach_o_fat_archentry *archentries;
1811} mach_o_fat_data_struct;
1812
1813const bfd_target *
1814bfd_mach_o_archive_p (abfd)
1815 bfd *abfd;
1816{
1817 mach_o_fat_data_struct *adata;
1818 unsigned char buf[20];
1819 unsigned long i;
1820
1821 bfd_seek (abfd, 0, SEEK_SET);
1822 if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1823 return NULL;
1824
1825 adata = (mach_o_fat_data_struct *)
1826 bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
1827 if (adata == NULL)
1828 return NULL;
1829
1830 adata->magic = bfd_getb32 (buf);
1831 adata->nfat_arch = bfd_getb32 (buf + 4);
1832 if (adata->magic != 0xcafebabe)
1833 return NULL;
1834
1835 adata->archentries = (mach_o_fat_archentry *)
1836 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
1837 if (adata->archentries == NULL)
1838 return NULL;
1839
1840 for (i = 0; i < adata->nfat_arch; i++)
1841 {
1842 bfd_seek (abfd, 8 + 20 * i, SEEK_SET);
1843
1844 if (bfd_bread ((PTR) buf, 20, abfd) != 20)
1845 return NULL;
1846 adata->archentries[i].cputype = bfd_getb32 (buf);
1847 adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
1848 adata->archentries[i].offset = bfd_getb32 (buf + 8);
1849 adata->archentries[i].size = bfd_getb32 (buf + 12);
1850 adata->archentries[i].align = bfd_getb32 (buf + 16);
1851 adata->archentries[i].abfd = NULL;
1852 }
1853
1854 abfd->tdata.mach_o_fat_data = adata;
1855 return abfd->xvec;
1856}
1857
1858bfd *
1859bfd_mach_o_openr_next_archived_file (archive, prev)
1860 bfd *archive;
1861 bfd *prev;
1862{
1863 mach_o_fat_data_struct *adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
1864 mach_o_fat_archentry *entry = NULL;
1865 unsigned long i;
1866
1867 BFD_ASSERT (adata != NULL);
1868
1869 /* Find index of previous entry. */
1870 if (prev == NULL)
1871 i = 0; /* Start at first one. */
1872 else
1873 {
1874 for (i = 0; i < adata->nfat_arch; i++)
1875 {
1876 if (adata->archentries[i].abfd == prev)
1877 break;
1878 }
1879
1880 if (i == adata->nfat_arch)
1881 {
1882 /* Not found. */
1883 bfd_set_error (bfd_error_bad_value);
1884 return NULL;
1885 }
1886 i++; /* Get next entry. */
1887 }
1888
1889 if (i >= adata->nfat_arch)
1890 {
1891 bfd_set_error (bfd_error_no_more_archived_files);
1892 return NULL;
1893 }
1894
1895 entry = &adata->archentries[i];
1896 if (entry->abfd == NULL)
1897 {
1898 bfd *nbfd = _bfd_new_bfd_contained_in (archive);
1899 char *s = NULL;
1900
1901 if (nbfd == NULL)
1902 return NULL;
1903
1904 nbfd->origin = entry->offset;
1905 s = bfd_malloc (strlen (archive->filename) + 1);
1906 if (s == NULL)
1907 return NULL;
1908 strcpy (s, archive->filename);
1909 nbfd->filename = s;
1910 nbfd->iostream = NULL;
1911 entry->abfd = nbfd;
1912 }
1913
1914 return entry->abfd;
1915}
1916
1917int bfd_mach_o_lookup_section
1918 (bfd *abfd, asection *section,
1919 bfd_mach_o_load_command **mcommand, bfd_mach_o_section **msection)
1920{
1921 struct mach_o_data_struct *md = abfd->tdata.mach_o_data;
1922 unsigned int i, j, num;
1923
1924 bfd_mach_o_load_command *ncmd = NULL;
1925 bfd_mach_o_section *nsect = NULL;
1926
1927 BFD_ASSERT (mcommand != NULL);
1928 BFD_ASSERT (msection != NULL);
1929
1930 num = 0;
1931 for (i = 0; i < md->header.ncmds; i++)
1932 {
1933 struct bfd_mach_o_load_command *cmd = &md->commands[i];
1934 struct bfd_mach_o_segment_command *seg = NULL;
1935
1936 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
1937 continue;
1938 seg = &cmd->command.segment;
1939
1940 if (seg->segment == section)
1941 {
1942 if (num == 0)
1943 ncmd = cmd;
1944 num++;
1945 }
1946
1947 for (j = 0; j < seg->nsects; j++)
1948 {
1949 struct bfd_mach_o_section *sect = &seg->sections[j];
1950
1951 if (sect->bfdsection == section)
1952 {
1953 if (num == 0)
1954 nsect = sect;
1955 num++;
1956 }
1957 }
1958 }
1959
1960 *mcommand = ncmd;
1961 *msection = nsect;
1962 return num;
1963}
1964
1965int
1966bfd_mach_o_lookup_command
1967 (bfd *abfd, bfd_mach_o_load_command_type type,
1968 bfd_mach_o_load_command **mcommand)
1969{
1970 struct mach_o_data_struct *md = NULL;
1971 bfd_mach_o_load_command *ncmd = NULL;
1972 unsigned int i, num;
1973
1974 md = abfd->tdata.mach_o_data;
1975
1976 BFD_ASSERT (md != NULL);
1977 BFD_ASSERT (mcommand != NULL);
1978
1979 num = 0;
1980 for (i = 0; i < md->header.ncmds; i++)
1981 {
1982 struct bfd_mach_o_load_command *cmd = &md->commands[i];
1983
1984 if (cmd->type != type)
1985 continue;
1986
1987 if (num == 0)
1988 ncmd = cmd;
1989 num++;
1990 }
1991
1992 *mcommand = ncmd;
1993 return num;
1994}
1995
1996unsigned long
1997bfd_mach_o_stack_addr (type)
1998 enum bfd_mach_o_cpu_type type;
1999{
2000 switch (type)
2001 {
2002 case BFD_MACH_O_CPU_TYPE_MC680x0:
2003 return 0x04000000;
2004 case BFD_MACH_O_CPU_TYPE_MC88000:
2005 return 0xffffe000;
2006 case BFD_MACH_O_CPU_TYPE_POWERPC:
2007 return 0xc0000000;
2008 case BFD_MACH_O_CPU_TYPE_I386:
2009 return 0xc0000000;
2010 case BFD_MACH_O_CPU_TYPE_SPARC:
2011 return 0xf0000000;
2012 case BFD_MACH_O_CPU_TYPE_I860:
2013 return 0;
2014 case BFD_MACH_O_CPU_TYPE_HPPA:
2015 return (0xc0000000-0x04000000);
2016 default:
2017 return 0;
2018 }
2019}
2020
2021int
2022bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen)
2023 bfd *abfd;
2024 unsigned char **rbuf;
2025 unsigned int *rlen;
2026{
2027 bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
2028 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
2029 unsigned int i = 0;
2030
2031 for (i = 0; i < mdata->header.ncmds; i++)
2032 {
2033 bfd_mach_o_load_command *cur = &mdata->commands[i];
2034 bfd_mach_o_segment_command *seg = NULL;
2035
2036 if (cur->type != BFD_MACH_O_LC_SEGMENT)
2037 continue;
2038
2039 seg = &cur->command.segment;
2040
2041 if ((seg->vmaddr + seg->vmsize) == stackaddr)
2042 {
2043 unsigned long start = seg->fileoff;
2044 unsigned long end = seg->fileoff + seg->filesize;
2045 unsigned char *buf = bfd_malloc (1024);
2046 unsigned long size = 1024;
2047
2048 for (;;)
2049 {
2050 bfd_size_type nread = 0;
2051 unsigned long offset;
2052 int found_nonnull = 0;
2053
2054 if (size > (end - start))
2055 size = (end - start);
2056
2057 buf = bfd_realloc (buf, size);
2058
2059 bfd_seek (abfd, end - size, SEEK_SET);
2060 nread = bfd_bread (buf, size, abfd);
2061
2062 if (nread != size)
2063 return -1;
2064
2065 for (offset = 4; offset <= size; offset += 4)
2066 {
2067 unsigned long val = *((unsigned long *) (buf + size - offset));
2068
2069 if (! found_nonnull)
2070 {
2071 if (val != 0)
2072 found_nonnull = 1;
2073 }
2074 else if (val == 0x0)
2075 {
2076 unsigned long bottom = seg->fileoff + seg->filesize - offset;
2077 unsigned long top = seg->fileoff + seg->filesize - 4;
2078
2079 *rbuf = bfd_malloc (top - bottom);
2080 *rlen = top - bottom;
2081
2082 memcpy (*rbuf, buf + size - *rlen, *rlen);
2083 return 0;
2084 }
2085 }
2086
2087 if (size == (end - start))
2088 break;
2089
2090 size *= 2;
2091 }
2092 }
2093 }
2094
2095 return -1;
2096}
2097
2098char *
2099bfd_mach_o_core_file_failing_command (abfd)
2100 bfd *abfd;
2101{
2102 unsigned char *buf = NULL;
2103 unsigned int len = 0;
2104 int ret = -1;
2105
2106 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
2107 if (ret < 0)
2108 return NULL;
2109
2110 return buf;
2111}
2112
2113int
2114bfd_mach_o_core_file_failing_signal (abfd)
2115 bfd *abfd ATTRIBUTE_UNUSED;
2116{
2117 return 0;
2118}
2119
2120boolean
2121bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd)
2122 bfd *core_bfd ATTRIBUTE_UNUSED;
2123 bfd *exec_bfd ATTRIBUTE_UNUSED;
2124{
2125 return true;
2126}
2127
2128#define TARGET_NAME mach_o_be_vec
2129#define TARGET_STRING "mach-o-be"
2130#define TARGET_BIG_ENDIAN 1
2131#define TARGET_ARCHIVE 0
2132
2133#include "mach-o-target.c"
2134
2135#undef TARGET_NAME
2136#undef TARGET_STRING
2137#undef TARGET_BIG_ENDIAN
2138#undef TARGET_ARCHIVE
2139
2140#define TARGET_NAME mach_o_le_vec
2141#define TARGET_STRING "mach-o-le"
2142#define TARGET_BIG_ENDIAN 0
2143#define TARGET_ARCHIVE 0
2144
2145#include "mach-o-target.c"
2146
2147#undef TARGET_NAME
2148#undef TARGET_STRING
2149#undef TARGET_BIG_ENDIAN
2150#undef TARGET_ARCHIVE
2151
2152#define TARGET_NAME mach_o_fat_vec
2153#define TARGET_STRING "mach-o-fat"
2154#define TARGET_BIG_ENDIAN 1
2155#define TARGET_ARCHIVE 1
2156
2157#include "mach-o-target.c"
2158
2159#undef TARGET_NAME
2160#undef TARGET_STRING
2161#undef TARGET_BIG_ENDIAN
2162#undef TARGET_ARCHIVE
2163
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