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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [bfd/] [mach-o.c] - Blame information for rev 824

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1 38 julius 
/* Mach-O support for BFD.
2 
   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
20 
   MA 02110-1301, USA.  */
21 
 
22 
#include "sysdep.h"
23 
#include "mach-o.h"
24 
#include "bfd.h"
25 
#include "libbfd.h"
26 
#include "libiberty.h"
27 
#include <ctype.h>
28 
 
29 
#ifndef BFD_IO_FUNCS
30 
#define BFD_IO_FUNCS 0
31 
#endif
32 
 
33 
#define bfd_mach_o_mkarchive                          _bfd_noarchive_mkarchive
34 
#define bfd_mach_o_read_ar_hdr                        _bfd_noarchive_read_ar_hdr
35 
#define bfd_mach_o_slurp_armap                        _bfd_noarchive_slurp_armap
36 
#define bfd_mach_o_slurp_extended_name_table          _bfd_noarchive_slurp_extended_name_table
37 
#define bfd_mach_o_construct_extended_name_table      _bfd_noarchive_construct_extended_name_table
38 
#define bfd_mach_o_truncate_arname                    _bfd_noarchive_truncate_arname
39 
#define bfd_mach_o_write_armap                        _bfd_noarchive_write_armap
40 
#define bfd_mach_o_get_elt_at_index                   _bfd_noarchive_get_elt_at_index
41 
#define bfd_mach_o_generic_stat_arch_elt              _bfd_noarchive_generic_stat_arch_elt
42 
#define bfd_mach_o_update_armap_timestamp             _bfd_noarchive_update_armap_timestamp
43 
#define bfd_mach_o_close_and_cleanup                  _bfd_generic_close_and_cleanup
44 
#define bfd_mach_o_bfd_free_cached_info               _bfd_generic_bfd_free_cached_info
45 
#define bfd_mach_o_new_section_hook                   _bfd_generic_new_section_hook
46 
#define bfd_mach_o_get_section_contents_in_window     _bfd_generic_get_section_contents_in_window
47 
#define bfd_mach_o_bfd_is_local_label_name            _bfd_nosymbols_bfd_is_local_label_name
48 
#define bfd_mach_o_bfd_is_target_special_symbol       ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
49 
#define bfd_mach_o_bfd_is_local_label_name            _bfd_nosymbols_bfd_is_local_label_name
50 
#define bfd_mach_o_get_lineno                         _bfd_nosymbols_get_lineno
51 
#define bfd_mach_o_find_nearest_line                  _bfd_nosymbols_find_nearest_line
52 
#define bfd_mach_o_find_inliner_info                  _bfd_nosymbols_find_inliner_info
53 
#define bfd_mach_o_bfd_make_debug_symbol              _bfd_nosymbols_bfd_make_debug_symbol
54 
#define bfd_mach_o_read_minisymbols                   _bfd_generic_read_minisymbols
55 
#define bfd_mach_o_minisymbol_to_symbol               _bfd_generic_minisymbol_to_symbol
56 
#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
57 
#define bfd_mach_o_bfd_relax_section                  bfd_generic_relax_section
58 
#define bfd_mach_o_bfd_link_hash_table_create         _bfd_generic_link_hash_table_create
59 
#define bfd_mach_o_bfd_link_hash_table_free           _bfd_generic_link_hash_table_free
60 
#define bfd_mach_o_bfd_link_add_symbols               _bfd_generic_link_add_symbols
61 
#define bfd_mach_o_bfd_link_just_syms                 _bfd_generic_link_just_syms
62 
#define bfd_mach_o_bfd_final_link                     _bfd_generic_final_link
63 
#define bfd_mach_o_bfd_link_split_section             _bfd_generic_link_split_section
64 
#define bfd_mach_o_set_arch_mach                      bfd_default_set_arch_mach
65 
#define bfd_mach_o_bfd_merge_private_bfd_data         _bfd_generic_bfd_merge_private_bfd_data
66 
#define bfd_mach_o_bfd_set_private_flags              _bfd_generic_bfd_set_private_flags
67 
#define bfd_mach_o_bfd_print_private_bfd_data         _bfd_generic_bfd_print_private_bfd_data
68 
#define bfd_mach_o_get_section_contents               _bfd_generic_get_section_contents
69 
#define bfd_mach_o_set_section_contents               _bfd_generic_set_section_contents
70 
#define bfd_mach_o_bfd_gc_sections                    bfd_generic_gc_sections
71 
#define bfd_mach_o_bfd_merge_sections                 bfd_generic_merge_sections
72 
#define bfd_mach_o_bfd_is_group_section               bfd_generic_is_group_section
73 
#define bfd_mach_o_bfd_discard_group                  bfd_generic_discard_group
74 
#define bfd_mach_o_section_already_linked             _bfd_generic_section_already_linked
75 
#define bfd_mach_o_bfd_copy_private_header_data       _bfd_generic_bfd_copy_private_header_data
76 
#define bfd_mach_o_core_file_matches_executable_p     generic_core_file_matches_executable_p
77 
 
78 
 
79 
/* The flags field of a section structure is separated into two parts a section
80 
   type and section attributes.  The section types are mutually exclusive (it
81 
   can only have one type) but the section attributes are not (it may have more
82 
   than one attribute).  */
83 
 
84 
#define SECTION_TYPE             0x000000ff     /* 256 section types.  */
85 
#define SECTION_ATTRIBUTES       0xffffff00     /*  24 section attributes.  */
86 
 
87 
/* Constants for the section attributes part of the flags field of a section
88 
   structure.  */
89 
 
90 
#define SECTION_ATTRIBUTES_USR   0xff000000     /* User-settable attributes.  */
91 
#define S_ATTR_PURE_INSTRUCTIONS 0x80000000     /* Section contains only true machine instructions.  */
92 
#define SECTION_ATTRIBUTES_SYS   0x00ffff00     /* System setable attributes.  */
93 
#define S_ATTR_SOME_INSTRUCTIONS 0x00000400     /* Section contains some machine instructions.  */
94 
#define S_ATTR_EXT_RELOC         0x00000200     /* Section has external relocation entries.  */
95 
#define S_ATTR_LOC_RELOC         0x00000100     /* Section has local relocation entries.  */
96 
 
97 
#define N_STAB 0xe0
98 
#define N_TYPE 0x1e
99 
#define N_EXT  0x01
100 
#define N_UNDF 0x0
101 
#define N_ABS  0x2
102 
#define N_SECT 0xe
103 
#define N_INDR 0xa
104 
 
105 
bfd_boolean
106 
bfd_mach_o_valid (bfd *abfd)
107 
{
108 
  if (abfd == NULL || abfd->xvec == NULL)
109 
    return 0;
110 
 
111 
  if (! ((abfd->xvec == &mach_o_be_vec)
112 
         || (abfd->xvec == &mach_o_le_vec)
113 
         || (abfd->xvec == &mach_o_fat_vec)))
114 
    return 0;
115 
 
116 
  if (abfd->tdata.mach_o_data == NULL)
117 
    return 0;
118 
  return 1;
119 
}
120 
 
121 
/* Copy any private info we understand from the input symbol
122 
   to the output symbol.  */
123 
 
124 
static bfd_boolean
125 
bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
126 
                                         asymbol *isymbol ATTRIBUTE_UNUSED,
127 
                                         bfd *obfd ATTRIBUTE_UNUSED,
128 
                                         asymbol *osymbol ATTRIBUTE_UNUSED)
129 
{
130 
  return TRUE;
131 
}
132 
 
133 
/* Copy any private info we understand from the input section
134 
   to the output section.  */
135 
 
136 
static bfd_boolean
137 
bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
138 
                                          asection *isection ATTRIBUTE_UNUSED,
139 
                                          bfd *obfd ATTRIBUTE_UNUSED,
140 
                                          asection *osection ATTRIBUTE_UNUSED)
141 
{
142 
  return TRUE;
143 
}
144 
 
145 
/* Copy any private info we understand from the input bfd
146 
   to the output bfd.  */
147 
 
148 
static bfd_boolean
149 
bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
150 
{
151 
  BFD_ASSERT (bfd_mach_o_valid (ibfd));
152 
  BFD_ASSERT (bfd_mach_o_valid (obfd));
153 
 
154 
  obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data;
155 
  obfd->tdata.mach_o_data->ibfd = ibfd;
156 
  return TRUE;
157 
}
158 
 
159 
static long
160 
bfd_mach_o_count_symbols (bfd *abfd)
161 
{
162 
  bfd_mach_o_data_struct *mdata = NULL;
163 
  long nsyms = 0;
164 
  unsigned long i;
165 
 
166 
  BFD_ASSERT (bfd_mach_o_valid (abfd));
167 
  mdata = abfd->tdata.mach_o_data;
168 
 
169 
  for (i = 0; i < mdata->header.ncmds; i++)
170 
    if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB)
171 
      {
172 
        bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab;
173 
        nsyms += sym->nsyms;
174 
      }
175 
 
176 
  return nsyms;
177 
}
178 
 
179 
static long
180 
bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
181 
{
182 
  long nsyms = bfd_mach_o_count_symbols (abfd);
183 
 
184 
  if (nsyms < 0)
185 
    return nsyms;
186 
 
187 
  return ((nsyms + 1) * sizeof (asymbol *));
188 
}
189 
 
190 
static long
191 
bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
192 
{
193 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
194 
  long nsyms = bfd_mach_o_count_symbols (abfd);
195 
  asymbol **csym = alocation;
196 
  unsigned long i, j;
197 
 
198 
  if (nsyms < 0)
199 
    return nsyms;
200 
 
201 
  for (i = 0; i < mdata->header.ncmds; i++)
202 
    {
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 
 
207 
          if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0)
208 
            {
209 
              fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i);
210 
              return 0;
211 
            }
212 
 
213 
          BFD_ASSERT (sym->symbols != NULL);
214 
 
215 
          for (j = 0; j < sym->nsyms; j++)
216 
            {
217 
              BFD_ASSERT (csym < (alocation + nsyms));
218 
              *csym++ = &sym->symbols[j];
219 
            }
220 
        }
221 
    }
222 
 
223 
  *csym++ = NULL;
224 
 
225 
  return nsyms;
226 
}
227 
 
228 
static void
229 
bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
230 
                            asymbol *symbol,
231 
                            symbol_info *ret)
232 
{
233 
  bfd_symbol_info (symbol, ret);
234 
}
235 
 
236 
static void
237 
bfd_mach_o_print_symbol (bfd *abfd,
238 
                         PTR afile,
239 
                         asymbol *symbol,
240 
                         bfd_print_symbol_type how)
241 
{
242 
  FILE *file = (FILE *) afile;
243 
 
244 
  switch (how)
245 
    {
246 
    case bfd_print_symbol_name:
247 
      fprintf (file, "%s", symbol->name);
248 
      break;
249 
    default:
250 
      bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
251 
      fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
252 
    }
253 
}
254 
 
255 
static void
256 
bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
257 
                                 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
258 
                                 enum bfd_architecture *type,
259 
                                 unsigned long *subtype)
260 
{
261 
  *subtype = bfd_arch_unknown;
262 
 
263 
  switch (mtype)
264 
    {
265 
    case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
266 
    case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
267 
    case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break;
268 
    case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
269 
    case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
270 
    case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
271 
    case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
272 
    case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
273 
    case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break;
274 
    case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
275 
    case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
276 
    case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break;
277 
    default: *type = bfd_arch_unknown; break;
278 
    }
279 
 
280 
  switch (*type)
281 
    {
282 
    case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break;
283 
    case bfd_arch_sparc: *subtype = bfd_mach_sparc; break;
284 
    default:
285 
      *subtype = bfd_arch_unknown;
286 
    }
287 
}
288 
 
289 
static int
290 
bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
291 
{
292 
  unsigned char buf[28];
293 
 
294 
  bfd_h_put_32 (abfd, header->magic, buf + 0);
295 
  bfd_h_put_32 (abfd, header->cputype, buf + 4);
296 
  bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
297 
  bfd_h_put_32 (abfd, header->filetype, buf + 12);
298 
  bfd_h_put_32 (abfd, header->ncmds, buf + 16);
299 
  bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
300 
  bfd_h_put_32 (abfd, header->flags, buf + 24);
301 
 
302 
  bfd_seek (abfd, 0, SEEK_SET);
303 
  if (bfd_bwrite ((PTR) buf, 28, abfd) != 28)
304 
    return -1;
305 
 
306 
  return 0;
307 
}
308 
 
309 
static int
310 
bfd_mach_o_scan_write_thread (bfd *abfd,
311 
                              bfd_mach_o_load_command *command)
312 
{
313 
  bfd_mach_o_thread_command *cmd = &command->command.thread;
314 
  unsigned int i;
315 
  unsigned char buf[8];
316 
  bfd_vma offset;
317 
  unsigned int nflavours;
318 
 
319 
  BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
320 
              || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
321 
 
322 
  offset = 8;
323 
  nflavours = 0;
324 
  for (i = 0; i < cmd->nflavours; i++)
325 
    {
326 
      BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
327 
      BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
328 
 
329 
      bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
330 
      bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
331 
 
332 
      bfd_seek (abfd, command->offset + offset, SEEK_SET);
333 
      if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
334 
        return -1;
335 
 
336 
      offset += cmd->flavours[i].size + 8;
337 
    }
338 
 
339 
  return 0;
340 
}
341 
 
342 
static int
343 
bfd_mach_o_scan_write_section (bfd *abfd,
344 
                               bfd_mach_o_section *section,
345 
                               bfd_vma offset)
346 
{
347 
  unsigned char buf[68];
348 
 
349 
  memcpy (buf, section->sectname, 16);
350 
  memcpy (buf + 16, section->segname, 16);
351 
  bfd_h_put_32 (abfd, section->addr, buf + 32);
352 
  bfd_h_put_32 (abfd, section->size, buf + 36);
353 
  bfd_h_put_32 (abfd, section->offset, buf + 40);
354 
  bfd_h_put_32 (abfd, section->align, buf + 44);
355 
  bfd_h_put_32 (abfd, section->reloff, buf + 48);
356 
  bfd_h_put_32 (abfd, section->nreloc, buf + 52);
357 
  bfd_h_put_32 (abfd, section->flags, buf + 56);
358 
  /* bfd_h_put_32 (abfd, section->reserved1, buf + 60); */
359 
  /* bfd_h_put_32 (abfd, section->reserved2, buf + 64); */
360 
 
361 
  bfd_seek (abfd, offset, SEEK_SET);
362 
  if (bfd_bwrite ((PTR) buf, 68, abfd) != 68)
363 
    return -1;
364 
 
365 
  return 0;
366 
}
367 
 
368 
static int
369 
bfd_mach_o_scan_write_segment (bfd *abfd, bfd_mach_o_load_command *command)
370 
{
371 
  unsigned char buf[48];
372 
  bfd_mach_o_segment_command *seg = &command->command.segment;
373 
  unsigned long i;
374 
 
375 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
376 
 
377 
  memcpy (buf, seg->segname, 16);
378 
  bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
379 
  bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
380 
  bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
381 
  bfd_h_put_32 (abfd, seg->filesize, buf + 28);
382 
  bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32);
383 
  bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36);
384 
  bfd_h_put_32 (abfd, seg->nsects, buf + 40);
385 
  bfd_h_put_32 (abfd, seg->flags, buf + 44);
386 
 
387 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
388 
  if (bfd_bwrite ((PTR) buf, 48, abfd) != 48)
389 
    return -1;
390 
 
391 
  {
392 
    char buf[1024];
393 
    bfd_vma nbytes = seg->filesize;
394 
    bfd_vma curoff = seg->fileoff;
395 
 
396 
    while (nbytes > 0)
397 
      {
398 
        bfd_vma thisread = nbytes;
399 
 
400 
        if (thisread > 1024)
401 
          thisread = 1024;
402 
 
403 
        bfd_seek (abfd, curoff, SEEK_SET);
404 
        if (bfd_bread ((PTR) buf, thisread, abfd) != thisread)
405 
          return -1;
406 
 
407 
        bfd_seek (abfd, curoff, SEEK_SET);
408 
        if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread)
409 
          return -1;
410 
 
411 
        nbytes -= thisread;
412 
        curoff += thisread;
413 
      }
414 
  }
415 
 
416 
  for (i = 0; i < seg->nsects; i++)
417 
    {
418 
      bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
419 
 
420 
      if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0)
421 
        return -1;
422 
    }
423 
 
424 
  return 0;
425 
}
426 
 
427 
static int
428 
bfd_mach_o_scan_write_symtab_symbols (bfd *abfd,
429 
                                      bfd_mach_o_load_command *command)
430 
{
431 
  bfd_mach_o_symtab_command *sym = &command->command.symtab;
432 
  asymbol *s = NULL;
433 
  unsigned long i;
434 
 
435 
  for (i = 0; i < sym->nsyms; i++)
436 
    {
437 
      unsigned char buf[12];
438 
      bfd_vma symoff = sym->symoff + (i * 12);
439 
      unsigned char ntype = 0;
440 
      unsigned char nsect = 0;
441 
      short ndesc = 0;
442 
 
443 
      s = &sym->symbols[i];
444 
 
445 
      /* Instead just set from the stored values.  */
446 
      ntype = (s->udata.i >> 24) & 0xff;
447 
      nsect = (s->udata.i >> 16) & 0xff;
448 
      ndesc = s->udata.i & 0xffff;
449 
 
450 
      bfd_h_put_32 (abfd, s->name - sym->strtab, buf);
451 
      bfd_h_put_8 (abfd, ntype, buf + 4);
452 
      bfd_h_put_8 (abfd, nsect, buf + 5);
453 
      bfd_h_put_16 (abfd, ndesc, buf + 6);
454 
      bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8);
455 
 
456 
      bfd_seek (abfd, symoff, SEEK_SET);
457 
      if (bfd_bwrite ((PTR) buf, 12, abfd) != 12)
458 
        {
459 
          fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n",
460 
                   12, (unsigned long) symoff);
461 
          return -1;
462 
        }
463 
    }
464 
 
465 
  return 0;
466 
}
467 
 
468 
static int
469 
bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
470 
{
471 
  bfd_mach_o_symtab_command *seg = &command->command.symtab;
472 
  unsigned char buf[16];
473 
 
474 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
475 
 
476 
  bfd_h_put_32 (abfd, seg->symoff, buf);
477 
  bfd_h_put_32 (abfd, seg->nsyms, buf + 4);
478 
  bfd_h_put_32 (abfd, seg->stroff, buf + 8);
479 
  bfd_h_put_32 (abfd, seg->strsize, buf + 12);
480 
 
481 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
482 
  if (bfd_bwrite ((PTR) buf, 16, abfd) != 16)
483 
    return -1;
484 
 
485 
  if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0)
486 
    return -1;
487 
 
488 
  return 0;
489 
}
490 
 
491 
static bfd_boolean
492 
bfd_mach_o_write_contents (bfd *abfd)
493 
{
494 
  unsigned int i;
495 
  asection *s;
496 
 
497 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
498 
 
499 
  /* Write data sections first in case they overlap header data to be
500 
     written later.  */
501 
 
502 
  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
503 
    ;
504 
 
505 
  /* Now write header information.  */
506 
  if (bfd_mach_o_write_header (abfd, &mdata->header) != 0)
507 
    return FALSE;
508 
 
509 
  for (i = 0; i < mdata->header.ncmds; i++)
510 
    {
511 
      unsigned char buf[8];
512 
      bfd_mach_o_load_command *cur = &mdata->commands[i];
513 
      unsigned long typeflag;
514 
 
515 
      typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type;
516 
 
517 
      bfd_h_put_32 (abfd, typeflag, buf);
518 
      bfd_h_put_32 (abfd, cur->len, buf + 4);
519 
 
520 
      bfd_seek (abfd, cur->offset, SEEK_SET);
521 
      if (bfd_bwrite ((PTR) buf, 8, abfd) != 8)
522 
        return FALSE;
523 
 
524 
      switch (cur->type)
525 
        {
526 
        case BFD_MACH_O_LC_SEGMENT:
527 
          if (bfd_mach_o_scan_write_segment (abfd, cur) != 0)
528 
            return FALSE;
529 
          break;
530 
        case BFD_MACH_O_LC_SYMTAB:
531 
          if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0)
532 
            return FALSE;
533 
          break;
534 
        case BFD_MACH_O_LC_SYMSEG:
535 
          break;
536 
        case BFD_MACH_O_LC_THREAD:
537 
        case BFD_MACH_O_LC_UNIXTHREAD:
538 
          if (bfd_mach_o_scan_write_thread (abfd, cur) != 0)
539 
            return FALSE;
540 
          break;
541 
        case BFD_MACH_O_LC_LOADFVMLIB:
542 
        case BFD_MACH_O_LC_IDFVMLIB:
543 
        case BFD_MACH_O_LC_IDENT:
544 
        case BFD_MACH_O_LC_FVMFILE:
545 
        case BFD_MACH_O_LC_PREPAGE:
546 
        case BFD_MACH_O_LC_DYSYMTAB:
547 
        case BFD_MACH_O_LC_LOAD_DYLIB:
548 
        case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
549 
        case BFD_MACH_O_LC_ID_DYLIB:
550 
        case BFD_MACH_O_LC_LOAD_DYLINKER:
551 
        case BFD_MACH_O_LC_ID_DYLINKER:
552 
        case BFD_MACH_O_LC_PREBOUND_DYLIB:
553 
        case BFD_MACH_O_LC_ROUTINES:
554 
        case BFD_MACH_O_LC_SUB_FRAMEWORK:
555 
          break;
556 
        default:
557 
          fprintf (stderr,
558 
                   "unable to write unknown load command 0x%lx\n",
559 
                   (long) cur->type);
560 
          return FALSE;
561 
        }
562 
    }
563 
 
564 
  return TRUE;
565 
}
566 
 
567 
static int
568 
bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
569 
                           struct bfd_link_info *info ATTRIBUTE_UNUSED)
570 
{
571 
  return 0;
572 
}
573 
 
574 
/* Make an empty symbol.  This is required only because
575 
   bfd_make_section_anyway wants to create a symbol for the section.  */
576 
 
577 
static asymbol *
578 
bfd_mach_o_make_empty_symbol (bfd *abfd)
579 
{
580 
  asymbol *new;
581 
 
582 
  new = bfd_zalloc (abfd, sizeof (* new));
583 
  if (new == NULL)
584 
    return new;
585 
  new->the_bfd = abfd;
586 
  return new;
587 
}
588 
 
589 
static int
590 
bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
591 
{
592 
  unsigned char buf[28];
593 
  bfd_vma (*get32) (const void *) = NULL;
594 
 
595 
  bfd_seek (abfd, 0, SEEK_SET);
596 
 
597 
  if (bfd_bread ((PTR) buf, 28, abfd) != 28)
598 
    return -1;
599 
 
600 
  if (bfd_getb32 (buf) == 0xfeedface)
601 
    {
602 
      header->byteorder = BFD_ENDIAN_BIG;
603 
      header->magic = 0xfeedface;
604 
      get32 = bfd_getb32;
605 
    }
606 
  else if (bfd_getl32 (buf) == 0xfeedface)
607 
    {
608 
      header->byteorder = BFD_ENDIAN_LITTLE;
609 
      header->magic = 0xfeedface;
610 
      get32 = bfd_getl32;
611 
    }
612 
  else
613 
    {
614 
      header->byteorder = BFD_ENDIAN_UNKNOWN;
615 
      return -1;
616 
    }
617 
 
618 
  header->cputype = (*get32) (buf + 4);
619 
  header->cpusubtype = (*get32) (buf + 8);
620 
  header->filetype = (*get32) (buf + 12);
621 
  header->ncmds = (*get32) (buf + 16);
622 
  header->sizeofcmds = (*get32) (buf + 20);
623 
  header->flags = (*get32) (buf + 24);
624 
 
625 
  return 0;
626 
}
627 
 
628 
static asection *
629 
bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section)
630 
{
631 
  asection *bfdsec;
632 
  char *sname;
633 
  const char *prefix = "LC_SEGMENT";
634 
  unsigned int snamelen;
635 
  flagword flags;
636 
 
637 
  snamelen = strlen (prefix) + 1
638 
    + strlen (section->segname) + 1
639 
    + strlen (section->sectname) + 1;
640 
 
641 
  sname = bfd_alloc (abfd, snamelen);
642 
  if (sname == NULL)
643 
    return NULL;
644 
  sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
645 
 
646 
  flags = SEC_ALLOC;
647 
  if ((section->flags & SECTION_TYPE) != BFD_MACH_O_S_ZEROFILL)
648 
    flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
649 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
650 
  if (bfdsec == NULL)
651 
    return NULL;
652 
 
653 
  bfdsec->vma = section->addr;
654 
  bfdsec->lma = section->addr;
655 
  bfdsec->size = section->size;
656 
  bfdsec->filepos = section->offset;
657 
  bfdsec->alignment_power = section->align;
658 
 
659 
  return bfdsec;
660 
}
661 
 
662 
static int
663 
bfd_mach_o_scan_read_section (bfd *abfd,
664 
                              bfd_mach_o_section *section,
665 
                              bfd_vma offset)
666 
{
667 
  unsigned char buf[68];
668 
 
669 
  bfd_seek (abfd, offset, SEEK_SET);
670 
  if (bfd_bread ((PTR) buf, 68, abfd) != 68)
671 
    return -1;
672 
 
673 
  memcpy (section->sectname, buf, 16);
674 
  section->sectname[16] = '\0';
675 
  memcpy (section->segname, buf + 16, 16);
676 
  section->segname[16] = '\0';
677 
  section->addr = bfd_h_get_32 (abfd, buf + 32);
678 
  section->size = bfd_h_get_32 (abfd, buf + 36);
679 
  section->offset = bfd_h_get_32 (abfd, buf + 40);
680 
  section->align = bfd_h_get_32 (abfd, buf + 44);
681 
  section->reloff = bfd_h_get_32 (abfd, buf + 48);
682 
  section->nreloc = bfd_h_get_32 (abfd, buf + 52);
683 
  section->flags = bfd_h_get_32 (abfd, buf + 56);
684 
  section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
685 
  section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
686 
  section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section);
687 
 
688 
  if (section->bfdsection == NULL)
689 
    return -1;
690 
 
691 
  return 0;
692 
}
693 
 
694 
int
695 
bfd_mach_o_scan_read_symtab_symbol (bfd *abfd,
696 
                                    bfd_mach_o_symtab_command *sym,
697 
                                    asymbol *s,
698 
                                    unsigned long i)
699 
{
700 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
701 
  bfd_vma symoff = sym->symoff + (i * 12);
702 
  unsigned char buf[12];
703 
  unsigned char type = -1;
704 
  unsigned char section = -1;
705 
  short desc = -1;
706 
  unsigned long value = -1;
707 
  unsigned long stroff = -1;
708 
  unsigned int symtype = -1;
709 
 
710 
  BFD_ASSERT (sym->strtab != NULL);
711 
 
712 
  bfd_seek (abfd, symoff, SEEK_SET);
713 
  if (bfd_bread ((PTR) buf, 12, abfd) != 12)
714 
    {
715 
      fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
716 
               12, (unsigned long) symoff);
717 
      return -1;
718 
    }
719 
 
720 
  stroff = bfd_h_get_32 (abfd, buf);
721 
  type = bfd_h_get_8 (abfd, buf + 4);
722 
  symtype = (type & 0x0e);
723 
  section = bfd_h_get_8 (abfd, buf + 5) - 1;
724 
  desc = bfd_h_get_16 (abfd, buf + 6);
725 
  value = bfd_h_get_32 (abfd, buf + 8);
726 
 
727 
  if (stroff >= sym->strsize)
728 
    {
729 
      fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
730 
               (unsigned long) stroff, (unsigned long) sym->strsize);
731 
      return -1;
732 
    }
733 
 
734 
  s->the_bfd = abfd;
735 
  s->name = sym->strtab + stroff;
736 
  s->value = value;
737 
  s->udata.i = (type << 24) | (section << 16) | desc;
738 
  s->flags = 0x0;
739 
 
740 
  if (type & BFD_MACH_O_N_STAB)
741 
    {
742 
      s->flags |= BSF_DEBUGGING;
743 
      s->section = bfd_und_section_ptr;
744 
    }
745 
  else
746 
    {
747 
      if (type & BFD_MACH_O_N_PEXT)
748 
        {
749 
          type &= ~BFD_MACH_O_N_PEXT;
750 
          s->flags |= BSF_GLOBAL;
751 
        }
752 
 
753 
      if (type & BFD_MACH_O_N_EXT)
754 
        {
755 
          type &= ~BFD_MACH_O_N_EXT;
756 
          s->flags |= BSF_GLOBAL;
757 
        }
758 
 
759 
      switch (symtype)
760 
        {
761 
        case BFD_MACH_O_N_UNDF:
762 
          s->section = bfd_und_section_ptr;
763 
          break;
764 
        case BFD_MACH_O_N_PBUD:
765 
          s->section = bfd_und_section_ptr;
766 
          break;
767 
        case BFD_MACH_O_N_ABS:
768 
          s->section = bfd_abs_section_ptr;
769 
          break;
770 
        case BFD_MACH_O_N_SECT:
771 
          if ((section > 0) && (section <= mdata->nsects))
772 
            {
773 
              s->section = mdata->sections[section - 1]->bfdsection;
774 
              s->value = s->value - mdata->sections[section - 1]->addr;
775 
            }
776 
          else
777 
            {
778 
              /* Mach-O uses 0 to mean "no section"; not an error.  */
779 
              if (section != 0)
780 
                {
781 
                  fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
782 
                           "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
783 
                           s->name, section, mdata->nsects);
784 
                }
785 
              s->section = bfd_und_section_ptr;
786 
            }
787 
          break;
788 
        case BFD_MACH_O_N_INDR:
789 
          fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
790 
                   "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
791 
                   s->name);
792 
          s->section = bfd_und_section_ptr;
793 
          break;
794 
        default:
795 
          fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
796 
                   "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
797 
                   s->name, symtype);
798 
          s->section = bfd_und_section_ptr;
799 
          break;
800 
        }
801 
    }
802 
 
803 
  return 0;
804 
}
805 
 
806 
int
807 
bfd_mach_o_scan_read_symtab_strtab (bfd *abfd,
808 
                                    bfd_mach_o_symtab_command *sym)
809 
{
810 
  BFD_ASSERT (sym->strtab == NULL);
811 
 
812 
  if (abfd->flags & BFD_IN_MEMORY)
813 
    {
814 
      struct bfd_in_memory *b;
815 
 
816 
      b = (struct bfd_in_memory *) abfd->iostream;
817 
 
818 
      if ((sym->stroff + sym->strsize) > b->size)
819 
        {
820 
          bfd_set_error (bfd_error_file_truncated);
821 
          return -1;
822 
        }
823 
      sym->strtab = (char *) b->buffer + sym->stroff;
824 
      return 0;
825 
    }
826 
 
827 
  sym->strtab = bfd_alloc (abfd, sym->strsize);
828 
  if (sym->strtab == NULL)
829 
    return -1;
830 
 
831 
  bfd_seek (abfd, sym->stroff, SEEK_SET);
832 
  if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
833 
    {
834 
      fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n",
835 
               sym->strsize, sym->stroff);
836 
      return -1;
837 
    }
838 
 
839 
  return 0;
840 
}
841 
 
842 
int
843 
bfd_mach_o_scan_read_symtab_symbols (bfd *abfd,
844 
                                     bfd_mach_o_symtab_command *sym)
845 
{
846 
  unsigned long i;
847 
  int ret;
848 
 
849 
  BFD_ASSERT (sym->symbols == NULL);
850 
  sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol));
851 
 
852 
  if (sym->symbols == NULL)
853 
    {
854 
      fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
855 
      return -1;
856 
    }
857 
 
858 
  ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym);
859 
  if (ret != 0)
860 
    return ret;
861 
 
862 
  for (i = 0; i < sym->nsyms; i++)
863 
    {
864 
      ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
865 
      if (ret != 0)
866 
        return ret;
867 
    }
868 
 
869 
  return 0;
870 
}
871 
 
872 
int
873 
bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd,
874 
                                      bfd_mach_o_dysymtab_command *dysym,
875 
                                      bfd_mach_o_symtab_command *sym,
876 
                                      asymbol *s,
877 
                                      unsigned long i)
878 
{
879 
  unsigned long isymoff = dysym->indirectsymoff + (i * 4);
880 
  unsigned long symindex;
881 
  unsigned char buf[4];
882 
 
883 
  BFD_ASSERT (i < dysym->nindirectsyms);
884 
 
885 
  bfd_seek (abfd, isymoff, SEEK_SET);
886 
  if (bfd_bread ((PTR) buf, 4, abfd) != 4)
887 
    {
888 
      fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
889 
               (unsigned long) 4, isymoff);
890 
      return -1;
891 
    }
892 
  symindex = bfd_h_get_32 (abfd, buf);
893 
 
894 
  return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
895 
}
896 
 
897 
static const char *
898 
bfd_mach_o_i386_flavour_string (unsigned int flavour)
899 
{
900 
  switch ((int) flavour)
901 
    {
902 
    case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE";
903 
    case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE";
904 
    case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE";
905 
    case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE";
906 
    case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE";
907 
    case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE";
908 
    case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE";
909 
    case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE";
910 
    case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE";
911 
    case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE";
912 
    case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE";
913 
    case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE";
914 
    default: return "UNKNOWN";
915 
    }
916 
}
917 
 
918 
static const char *
919 
bfd_mach_o_ppc_flavour_string (unsigned int flavour)
920 
{
921 
  switch ((int) flavour)
922 
    {
923 
    case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
924 
    case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
925 
    case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
926 
    case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
927 
    default: return "UNKNOWN";
928 
    }
929 
}
930 
 
931 
static int
932 
bfd_mach_o_scan_read_dylinker (bfd *abfd,
933 
                               bfd_mach_o_load_command *command)
934 
{
935 
  bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
936 
  unsigned char buf[4];
937 
  unsigned int nameoff;
938 
  asection *bfdsec;
939 
  char *sname;
940 
  const char *prefix;
941 
 
942 
  BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
943 
              || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
944 
 
945 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
946 
  if (bfd_bread ((PTR) buf, 4, abfd) != 4)
947 
    return -1;
948 
 
949 
  nameoff = bfd_h_get_32 (abfd, buf + 0);
950 
 
951 
  cmd->name_offset = command->offset + nameoff;
952 
  cmd->name_len = command->len - nameoff;
953 
 
954 
  if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)
955 
    prefix = "LC_LOAD_DYLINKER";
956 
  else if (command->type == BFD_MACH_O_LC_ID_DYLINKER)
957 
    prefix = "LC_ID_DYLINKER";
958 
  else
959 
    abort ();
960 
 
961 
  sname = bfd_alloc (abfd, strlen (prefix) + 1);
962 
  if (sname == NULL)
963 
    return -1;
964 
  strcpy (sname, prefix);
965 
 
966 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
967 
  if (bfdsec == NULL)
968 
    return -1;
969 
 
970 
  bfdsec->vma = 0;
971 
  bfdsec->lma = 0;
972 
  bfdsec->size = command->len - 8;
973 
  bfdsec->filepos = command->offset + 8;
974 
  bfdsec->alignment_power = 0;
975 
 
976 
  cmd->section = bfdsec;
977 
 
978 
  return 0;
979 
}
980 
 
981 
static int
982 
bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
983 
{
984 
  bfd_mach_o_dylib_command *cmd = &command->command.dylib;
985 
  unsigned char buf[16];
986 
  unsigned int nameoff;
987 
  asection *bfdsec;
988 
  char *sname;
989 
  const char *prefix;
990 
 
991 
  BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB)
992 
              || (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
993 
              || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB));
994 
 
995 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
996 
  if (bfd_bread ((PTR) buf, 16, abfd) != 16)
997 
    return -1;
998 
 
999 
  nameoff = bfd_h_get_32 (abfd, buf + 0);
1000 
  cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1001 
  cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1002 
  cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1003 
 
1004 
  cmd->name_offset = command->offset + nameoff;
1005 
  cmd->name_len = command->len - nameoff;
1006 
 
1007 
  if (command->type == BFD_MACH_O_LC_LOAD_DYLIB)
1008 
    prefix = "LC_LOAD_DYLIB";
1009 
  else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)
1010 
    prefix = "LC_LOAD_WEAK_DYLIB";
1011 
  else if (command->type == BFD_MACH_O_LC_ID_DYLIB)
1012 
    prefix = "LC_ID_DYLIB";
1013 
  else
1014 
    abort ();
1015 
 
1016 
  sname = bfd_alloc (abfd, strlen (prefix) + 1);
1017 
  if (sname == NULL)
1018 
    return -1;
1019 
  strcpy (sname, prefix);
1020 
 
1021 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
1022 
  if (bfdsec == NULL)
1023 
    return -1;
1024 
 
1025 
  bfdsec->vma = 0;
1026 
  bfdsec->lma = 0;
1027 
  bfdsec->size = command->len - 8;
1028 
  bfdsec->filepos = command->offset + 8;
1029 
  bfdsec->alignment_power = 0;
1030 
 
1031 
  cmd->section = bfdsec;
1032 
 
1033 
  return 0;
1034 
}
1035 
 
1036 
static int
1037 
bfd_mach_o_scan_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
1038 
                                     bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
1039 
{
1040 
  /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1041 
 
1042 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1043 
  return 0;
1044 
}
1045 
 
1046 
static int
1047 
bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
1048 
{
1049 
  bfd_mach_o_data_struct *mdata = NULL;
1050 
  bfd_mach_o_thread_command *cmd = &command->command.thread;
1051 
  unsigned char buf[8];
1052 
  bfd_vma offset;
1053 
  unsigned int nflavours;
1054 
  unsigned int i;
1055 
 
1056 
  BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1057 
              || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1058 
 
1059 
  BFD_ASSERT (bfd_mach_o_valid (abfd));
1060 
  mdata = abfd->tdata.mach_o_data;
1061 
 
1062 
  offset = 8;
1063 
  nflavours = 0;
1064 
  while (offset != command->len)
1065 
    {
1066 
      if (offset >= command->len)
1067 
        return -1;
1068 
 
1069 
      bfd_seek (abfd, command->offset + offset, SEEK_SET);
1070 
 
1071 
      if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1072 
        return -1;
1073 
 
1074 
      offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
1075 
      nflavours++;
1076 
    }
1077 
 
1078 
  cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
1079 
  if (cmd->flavours == NULL)
1080 
    return -1;
1081 
  cmd->nflavours = nflavours;
1082 
 
1083 
  offset = 8;
1084 
  nflavours = 0;
1085 
  while (offset != command->len)
1086 
    {
1087 
      if (offset >= command->len)
1088 
        return -1;
1089 
 
1090 
      if (nflavours >= cmd->nflavours)
1091 
        return -1;
1092 
 
1093 
      bfd_seek (abfd, command->offset + offset, SEEK_SET);
1094 
 
1095 
      if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1096 
        return -1;
1097 
 
1098 
      cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
1099 
      cmd->flavours[nflavours].offset = command->offset + offset + 8;
1100 
      cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
1101 
      offset += cmd->flavours[nflavours].size + 8;
1102 
      nflavours++;
1103 
    }
1104 
 
1105 
  for (i = 0; i < nflavours; i++)
1106 
    {
1107 
      asection *bfdsec;
1108 
      unsigned int snamelen;
1109 
      char *sname;
1110 
      const char *flavourstr;
1111 
      const char *prefix = "LC_THREAD";
1112 
      unsigned int j = 0;
1113 
 
1114 
      switch (mdata->header.cputype)
1115 
        {
1116 
        case BFD_MACH_O_CPU_TYPE_POWERPC:
1117 
          flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
1118 
          break;
1119 
        case BFD_MACH_O_CPU_TYPE_I386:
1120 
          flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
1121 
          break;
1122 
        default:
1123 
          flavourstr = "UNKNOWN_ARCHITECTURE";
1124 
          break;
1125 
        }
1126 
 
1127 
      snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
1128 
      sname = bfd_alloc (abfd, snamelen);
1129 
      if (sname == NULL)
1130 
        return -1;
1131 
 
1132 
      for (;;)
1133 
        {
1134 
          sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
1135 
          if (bfd_get_section_by_name (abfd, sname) == NULL)
1136 
            break;
1137 
          j++;
1138 
        }
1139 
 
1140 
      bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
1141 
 
1142 
      bfdsec->vma = 0;
1143 
      bfdsec->lma = 0;
1144 
      bfdsec->size = cmd->flavours[i].size;
1145 
      bfdsec->filepos = cmd->flavours[i].offset;
1146 
      bfdsec->alignment_power = 0x0;
1147 
 
1148 
      cmd->section = bfdsec;
1149 
    }
1150 
 
1151 
  return 0;
1152 
}
1153 
 
1154 
static int
1155 
bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
1156 
{
1157 
  bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab;
1158 
  unsigned char buf[72];
1159 
 
1160 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1161 
 
1162 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
1163 
  if (bfd_bread ((PTR) buf, 72, abfd) != 72)
1164 
    return -1;
1165 
 
1166 
  seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
1167 
  seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
1168 
  seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
1169 
  seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
1170 
  seg->iundefsym = bfd_h_get_32 (abfd, buf + 16);
1171 
  seg->nundefsym = bfd_h_get_32 (abfd, buf + 20);
1172 
  seg->tocoff = bfd_h_get_32 (abfd, buf + 24);
1173 
  seg->ntoc = bfd_h_get_32 (abfd, buf + 28);
1174 
  seg->modtaboff = bfd_h_get_32 (abfd, buf + 32);
1175 
  seg->nmodtab = bfd_h_get_32 (abfd, buf + 36);
1176 
  seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
1177 
  seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
1178 
  seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
1179 
  seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
1180 
  seg->extreloff = bfd_h_get_32 (abfd, buf + 56);
1181 
  seg->nextrel = bfd_h_get_32 (abfd, buf + 60);
1182 
  seg->locreloff = bfd_h_get_32 (abfd, buf + 64);
1183 
  seg->nlocrel = bfd_h_get_32 (abfd, buf + 68);
1184 
 
1185 
  return 0;
1186 
}
1187 
 
1188 
static int
1189 
bfd_mach_o_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1190 
{
1191 
  bfd_mach_o_symtab_command *seg = &command->command.symtab;
1192 
  unsigned char buf[16];
1193 
  asection *bfdsec;
1194 
  char *sname;
1195 
  const char *prefix = "LC_SYMTAB.stabs";
1196 
 
1197 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1198 
 
1199 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
1200 
  if (bfd_bread ((PTR) buf, 16, abfd) != 16)
1201 
    return -1;
1202 
 
1203 
  seg->symoff = bfd_h_get_32 (abfd, buf);
1204 
  seg->nsyms = bfd_h_get_32 (abfd, buf + 4);
1205 
  seg->stroff = bfd_h_get_32 (abfd, buf + 8);
1206 
  seg->strsize = bfd_h_get_32 (abfd, buf + 12);
1207 
  seg->symbols = NULL;
1208 
  seg->strtab = NULL;
1209 
 
1210 
  sname = bfd_alloc (abfd, strlen (prefix) + 1);
1211 
  if (sname == NULL)
1212 
    return -1;
1213 
  strcpy (sname, prefix);
1214 
 
1215 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
1216 
  if (bfdsec == NULL)
1217 
    return -1;
1218 
 
1219 
  bfdsec->vma = 0;
1220 
  bfdsec->lma = 0;
1221 
  bfdsec->size = seg->nsyms * 12;
1222 
  bfdsec->filepos = seg->symoff;
1223 
  bfdsec->alignment_power = 0;
1224 
 
1225 
  seg->stabs_segment = bfdsec;
1226 
 
1227 
  prefix = "LC_SYMTAB.stabstr";
1228 
  sname = bfd_alloc (abfd, strlen (prefix) + 1);
1229 
  if (sname == NULL)
1230 
    return -1;
1231 
  strcpy (sname, prefix);
1232 
 
1233 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
1234 
  if (bfdsec == NULL)
1235 
    return -1;
1236 
 
1237 
  bfdsec->vma = 0;
1238 
  bfdsec->lma = 0;
1239 
  bfdsec->size = seg->strsize;
1240 
  bfdsec->filepos = seg->stroff;
1241 
  bfdsec->alignment_power = 0;
1242 
 
1243 
  seg->stabstr_segment = bfdsec;
1244 
 
1245 
  return 0;
1246 
}
1247 
 
1248 
static int
1249 
bfd_mach_o_scan_read_segment (bfd *abfd, bfd_mach_o_load_command *command)
1250 
{
1251 
  unsigned char buf[48];
1252 
  bfd_mach_o_segment_command *seg = &command->command.segment;
1253 
  unsigned long i;
1254 
  asection *bfdsec;
1255 
  char *sname;
1256 
  const char *prefix = "LC_SEGMENT";
1257 
  unsigned int snamelen;
1258 
  flagword flags;
1259 
 
1260 
  BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1261 
 
1262 
  bfd_seek (abfd, command->offset + 8, SEEK_SET);
1263 
  if (bfd_bread ((PTR) buf, 48, abfd) != 48)
1264 
    return -1;
1265 
 
1266 
  memcpy (seg->segname, buf, 16);
1267 
  seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
1268 
  seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
1269 
  seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
1270 
  seg->filesize = bfd_h_get_32 (abfd, buf +  28);
1271 
  /* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */
1272 
  /* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */
1273 
  seg->nsects = bfd_h_get_32 (abfd, buf + 40);
1274 
  seg->flags = bfd_h_get_32 (abfd, buf + 44);
1275 
 
1276 
  snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1;
1277 
  sname = bfd_alloc (abfd, snamelen);
1278 
  if (sname == NULL)
1279 
    return -1;
1280 
  sprintf (sname, "%s.%s", prefix, seg->segname);
1281 
 
1282 
  flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
1283 
  bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
1284 
  if (bfdsec == NULL)
1285 
    return -1;
1286 
 
1287 
  bfdsec->vma = seg->vmaddr;
1288 
  bfdsec->lma = seg->vmaddr;
1289 
  bfdsec->size = seg->filesize;
1290 
  bfdsec->filepos = seg->fileoff;
1291 
  bfdsec->alignment_power = 0x0;
1292 
 
1293 
  seg->segment = bfdsec;
1294 
 
1295 
  if (seg->nsects != 0)
1296 
    {
1297 
      seg->sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
1298 
      if (seg->sections == NULL)
1299 
        return -1;
1300 
 
1301 
      for (i = 0; i < seg->nsects; i++)
1302 
        {
1303 
          bfd_vma segoff = command->offset + 48 + 8 + (i * 68);
1304 
 
1305 
          if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i],
1306 
                                            segoff) != 0)
1307 
            return -1;
1308 
        }
1309 
    }
1310 
 
1311 
  return 0;
1312 
}
1313 
 
1314 
static int
1315 
bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command)
1316 
{
1317 
  unsigned char buf[8];
1318 
 
1319 
  bfd_seek (abfd, command->offset, SEEK_SET);
1320 
  if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1321 
    return -1;
1322 
 
1323 
  command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD);
1324 
  command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
1325 
                            ? 1 : 0);
1326 
  command->len = bfd_h_get_32 (abfd, buf + 4);
1327 
 
1328 
  switch (command->type)
1329 
    {
1330 
    case BFD_MACH_O_LC_SEGMENT:
1331 
      if (bfd_mach_o_scan_read_segment (abfd, command) != 0)
1332 
        return -1;
1333 
      break;
1334 
    case BFD_MACH_O_LC_SYMTAB:
1335 
      if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
1336 
        return -1;
1337 
      break;
1338 
    case BFD_MACH_O_LC_SYMSEG:
1339 
      break;
1340 
    case BFD_MACH_O_LC_THREAD:
1341 
    case BFD_MACH_O_LC_UNIXTHREAD:
1342 
      if (bfd_mach_o_scan_read_thread (abfd, command) != 0)
1343 
        return -1;
1344 
      break;
1345 
    case BFD_MACH_O_LC_LOAD_DYLINKER:
1346 
    case BFD_MACH_O_LC_ID_DYLINKER:
1347 
      if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0)
1348 
        return -1;
1349 
      break;
1350 
    case BFD_MACH_O_LC_LOAD_DYLIB:
1351 
    case BFD_MACH_O_LC_ID_DYLIB:
1352 
    case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1353 
      if (bfd_mach_o_scan_read_dylib (abfd, command) != 0)
1354 
        return -1;
1355 
      break;
1356 
    case BFD_MACH_O_LC_PREBOUND_DYLIB:
1357 
      if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0)
1358 
        return -1;
1359 
      break;
1360 
    case BFD_MACH_O_LC_LOADFVMLIB:
1361 
    case BFD_MACH_O_LC_IDFVMLIB:
1362 
    case BFD_MACH_O_LC_IDENT:
1363 
    case BFD_MACH_O_LC_FVMFILE:
1364 
    case BFD_MACH_O_LC_PREPAGE:
1365 
    case BFD_MACH_O_LC_ROUTINES:
1366 
    case BFD_MACH_O_LC_SUB_FRAMEWORK:
1367 
      break;
1368 
    case BFD_MACH_O_LC_DYSYMTAB:
1369 
      if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0)
1370 
        return -1;
1371 
      break;
1372 
    case BFD_MACH_O_LC_SUB_UMBRELLA:
1373 
    case BFD_MACH_O_LC_SUB_CLIENT:
1374 
    case BFD_MACH_O_LC_SUB_LIBRARY:
1375 
    case BFD_MACH_O_LC_TWOLEVEL_HINTS:
1376 
    case BFD_MACH_O_LC_PREBIND_CKSUM:
1377 
      break;
1378 
    default:
1379 
      fprintf (stderr, "unable to read unknown load command 0x%lx\n",
1380 
               (unsigned long) command->type);
1381 
      break;
1382 
    }
1383 
 
1384 
  return 0;
1385 
}
1386 
 
1387 
static void
1388 
bfd_mach_o_flatten_sections (bfd *abfd)
1389 
{
1390 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
1391 
  long csect = 0;
1392 
  unsigned long i, j;
1393 
 
1394 
  mdata->nsects = 0;
1395 
 
1396 
  for (i = 0; i < mdata->header.ncmds; i++)
1397 
    {
1398 
      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
1399 
        {
1400 
          bfd_mach_o_segment_command *seg;
1401 
 
1402 
          seg = &mdata->commands[i].command.segment;
1403 
          mdata->nsects += seg->nsects;
1404 
        }
1405 
    }
1406 
 
1407 
  mdata->sections = bfd_alloc (abfd,
1408 
                               mdata->nsects * sizeof (bfd_mach_o_section *));
1409 
  csect = 0;
1410 
 
1411 
  for (i = 0; i < mdata->header.ncmds; i++)
1412 
    {
1413 
      if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT)
1414 
        {
1415 
          bfd_mach_o_segment_command *seg;
1416 
 
1417 
          seg = &mdata->commands[i].command.segment;
1418 
          BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
1419 
 
1420 
          for (j = 0; j < seg->nsects; j++)
1421 
            mdata->sections[csect++] = &seg->sections[j];
1422 
        }
1423 
    }
1424 
}
1425 
 
1426 
int
1427 
bfd_mach_o_scan_start_address (bfd *abfd)
1428 
{
1429 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
1430 
  bfd_mach_o_thread_command *cmd = NULL;
1431 
  unsigned long i;
1432 
 
1433 
  for (i = 0; i < mdata->header.ncmds; i++)
1434 
    {
1435 
      if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
1436 
          (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
1437 
        {
1438 
          if (cmd == NULL)
1439 
            cmd = &mdata->commands[i].command.thread;
1440 
          else
1441 
            return 0;
1442 
        }
1443 
    }
1444 
 
1445 
  if (cmd == NULL)
1446 
    return 0;
1447 
 
1448 
  for (i = 0; i < cmd->nflavours; i++)
1449 
    {
1450 
      if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
1451 
          && (cmd->flavours[i].flavour
1452 
              == (unsigned long) BFD_MACH_O_i386_THREAD_STATE))
1453 
        {
1454 
          unsigned char buf[4];
1455 
 
1456 
          bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET);
1457 
 
1458 
          if (bfd_bread (buf, 4, abfd) != 4)
1459 
            return -1;
1460 
 
1461 
          abfd->start_address = bfd_h_get_32 (abfd, buf);
1462 
        }
1463 
      else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
1464 
               && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
1465 
        {
1466 
          unsigned char buf[4];
1467 
 
1468 
          bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET);
1469 
 
1470 
          if (bfd_bread (buf, 4, abfd) != 4)
1471 
            return -1;
1472 
 
1473 
          abfd->start_address = bfd_h_get_32 (abfd, buf);
1474 
        }
1475 
    }
1476 
 
1477 
  return 0;
1478 
}
1479 
 
1480 
int
1481 
bfd_mach_o_scan (bfd *abfd,
1482 
                 bfd_mach_o_header *header,
1483 
                 bfd_mach_o_data_struct *mdata)
1484 
{
1485 
  unsigned int i;
1486 
  enum bfd_architecture cputype;
1487 
  unsigned long cpusubtype;
1488 
 
1489 
  mdata->header = *header;
1490 
  mdata->symbols = NULL;
1491 
 
1492 
  abfd->flags = (abfd->xvec->object_flags
1493 
                 | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS)));
1494 
  abfd->tdata.mach_o_data = mdata;
1495 
 
1496 
  bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
1497 
                                   &cputype, &cpusubtype);
1498 
  if (cputype == bfd_arch_unknown)
1499 
    {
1500 
      fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
1501 
               header->cputype, header->cpusubtype);
1502 
      return -1;
1503 
    }
1504 
 
1505 
  bfd_set_arch_mach (abfd, cputype, cpusubtype);
1506 
 
1507 
  if (header->ncmds != 0)
1508 
    {
1509 
      mdata->commands = bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
1510 
      if (mdata->commands == NULL)
1511 
        return -1;
1512 
 
1513 
      for (i = 0; i < header->ncmds; i++)
1514 
        {
1515 
          bfd_mach_o_load_command *cur = &mdata->commands[i];
1516 
 
1517 
          if (i == 0)
1518 
            cur->offset = 28;
1519 
          else
1520 
            {
1521 
              bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
1522 
              cur->offset = prev->offset + prev->len;
1523 
            }
1524 
 
1525 
          if (bfd_mach_o_scan_read_command (abfd, cur) < 0)
1526 
            return -1;
1527 
        }
1528 
    }
1529 
 
1530 
  if (bfd_mach_o_scan_start_address (abfd) < 0)
1531 
    return -1;
1532 
 
1533 
  bfd_mach_o_flatten_sections (abfd);
1534 
  return 0;
1535 
}
1536 
 
1537 
bfd_boolean
1538 
bfd_mach_o_mkobject (bfd *abfd)
1539 
{
1540 
  bfd_mach_o_data_struct *mdata = NULL;
1541 
 
1542 
  mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
1543 
  if (mdata == NULL)
1544 
    return FALSE;
1545 
  abfd->tdata.mach_o_data = mdata;
1546 
 
1547 
  mdata->header.magic = 0;
1548 
  mdata->header.cputype = 0;
1549 
  mdata->header.cpusubtype = 0;
1550 
  mdata->header.filetype = 0;
1551 
  mdata->header.ncmds = 0;
1552 
  mdata->header.sizeofcmds = 0;
1553 
  mdata->header.flags = 0;
1554 
  mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
1555 
  mdata->commands = NULL;
1556 
  mdata->nsymbols = 0;
1557 
  mdata->symbols = NULL;
1558 
  mdata->nsects = 0;
1559 
  mdata->sections = NULL;
1560 
  mdata->ibfd = NULL;
1561 
 
1562 
  return TRUE;
1563 
}
1564 
 
1565 
const bfd_target *
1566 
bfd_mach_o_object_p (bfd *abfd)
1567 
{
1568 
  struct bfd_preserve preserve;
1569 
  bfd_mach_o_header header;
1570 
 
1571 
  preserve.marker = NULL;
1572 
  if (bfd_mach_o_read_header (abfd, &header) != 0)
1573 
    goto wrong;
1574 
 
1575 
  if (! (header.byteorder == BFD_ENDIAN_BIG
1576 
         || header.byteorder == BFD_ENDIAN_LITTLE))
1577 
    {
1578 
      fprintf (stderr, "unknown header byte-order value 0x%lx\n",
1579 
               (long) header.byteorder);
1580 
      goto wrong;
1581 
    }
1582 
 
1583 
  if (! ((header.byteorder == BFD_ENDIAN_BIG
1584 
          && abfd->xvec->byteorder == BFD_ENDIAN_BIG
1585 
          && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
1586 
         || (header.byteorder == BFD_ENDIAN_LITTLE
1587 
             && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
1588 
             && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
1589 
    goto wrong;
1590 
 
1591 
  preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
1592 
  if (preserve.marker == NULL
1593 
      || !bfd_preserve_save (abfd, &preserve))
1594 
    goto fail;
1595 
 
1596 
  if (bfd_mach_o_scan (abfd, &header,
1597 
                       (bfd_mach_o_data_struct *) preserve.marker) != 0)
1598 
    goto wrong;
1599 
 
1600 
  bfd_preserve_finish (abfd, &preserve);
1601 
  return abfd->xvec;
1602 
 
1603 
 wrong:
1604 
  bfd_set_error (bfd_error_wrong_format);
1605 
 
1606 
 fail:
1607 
  if (preserve.marker != NULL)
1608 
    bfd_preserve_restore (abfd, &preserve);
1609 
  return NULL;
1610 
}
1611 
 
1612 
const bfd_target *
1613 
bfd_mach_o_core_p (bfd *abfd)
1614 
{
1615 
  struct bfd_preserve preserve;
1616 
  bfd_mach_o_header header;
1617 
 
1618 
  preserve.marker = NULL;
1619 
  if (bfd_mach_o_read_header (abfd, &header) != 0)
1620 
    goto wrong;
1621 
 
1622 
  if (! (header.byteorder == BFD_ENDIAN_BIG
1623 
         || header.byteorder == BFD_ENDIAN_LITTLE))
1624 
    {
1625 
      fprintf (stderr, "unknown header byte-order value 0x%lx\n",
1626 
               (long) header.byteorder);
1627 
      abort ();
1628 
    }
1629 
 
1630 
  if (! ((header.byteorder == BFD_ENDIAN_BIG
1631 
          && abfd->xvec->byteorder == BFD_ENDIAN_BIG
1632 
          && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
1633 
         || (header.byteorder == BFD_ENDIAN_LITTLE
1634 
             && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
1635 
             && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
1636 
    goto wrong;
1637 
 
1638 
  if (header.filetype != BFD_MACH_O_MH_CORE)
1639 
    goto wrong;
1640 
 
1641 
  preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
1642 
  if (preserve.marker == NULL
1643 
      || !bfd_preserve_save (abfd, &preserve))
1644 
    goto fail;
1645 
 
1646 
  if (bfd_mach_o_scan (abfd, &header,
1647 
                       (bfd_mach_o_data_struct *) preserve.marker) != 0)
1648 
    goto wrong;
1649 
 
1650 
  bfd_preserve_finish (abfd, &preserve);
1651 
  return abfd->xvec;
1652 
 
1653 
 wrong:
1654 
  bfd_set_error (bfd_error_wrong_format);
1655 
 
1656 
 fail:
1657 
  if (preserve.marker != NULL)
1658 
    bfd_preserve_restore (abfd, &preserve);
1659 
  return NULL;
1660 
}
1661 
 
1662 
typedef struct mach_o_fat_archentry
1663 
{
1664 
  unsigned long cputype;
1665 
  unsigned long cpusubtype;
1666 
  unsigned long offset;
1667 
  unsigned long size;
1668 
  unsigned long align;
1669 
  bfd *abfd;
1670 
} mach_o_fat_archentry;
1671 
 
1672 
typedef struct mach_o_fat_data_struct
1673 
{
1674 
  unsigned long magic;
1675 
  unsigned long nfat_arch;
1676 
  mach_o_fat_archentry *archentries;
1677 
} mach_o_fat_data_struct;
1678 
 
1679 
const bfd_target *
1680 
bfd_mach_o_archive_p (bfd *abfd)
1681 
{
1682 
  mach_o_fat_data_struct *adata = NULL;
1683 
  unsigned char buf[20];
1684 
  unsigned long i;
1685 
 
1686 
  bfd_seek (abfd, 0, SEEK_SET);
1687 
  if (bfd_bread ((PTR) buf, 8, abfd) != 8)
1688 
    goto error;
1689 
 
1690 
  adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
1691 
  if (adata == NULL)
1692 
    goto error;
1693 
 
1694 
  adata->magic = bfd_getb32 (buf);
1695 
  adata->nfat_arch = bfd_getb32 (buf + 4);
1696 
  if (adata->magic != 0xcafebabe)
1697 
    goto error;
1698 
 
1699 
  adata->archentries =
1700 
    bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
1701 
  if (adata->archentries == NULL)
1702 
    goto error;
1703 
 
1704 
  for (i = 0; i < adata->nfat_arch; i++)
1705 
    {
1706 
      bfd_seek (abfd, 8 + 20 * i, SEEK_SET);
1707 
 
1708 
      if (bfd_bread ((PTR) buf, 20, abfd) != 20)
1709 
        goto error;
1710 
      adata->archentries[i].cputype = bfd_getb32 (buf);
1711 
      adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
1712 
      adata->archentries[i].offset = bfd_getb32 (buf + 8);
1713 
      adata->archentries[i].size = bfd_getb32 (buf + 12);
1714 
      adata->archentries[i].align = bfd_getb32 (buf + 16);
1715 
      adata->archentries[i].abfd = NULL;
1716 
    }
1717 
 
1718 
  abfd->tdata.mach_o_fat_data = adata;
1719 
  return abfd->xvec;
1720 
 
1721 
 error:
1722 
  if (adata != NULL)
1723 
    bfd_release (abfd, adata);
1724 
  bfd_set_error (bfd_error_wrong_format);
1725 
  return NULL;
1726 
}
1727 
 
1728 
bfd *
1729 
bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
1730 
{
1731 
  mach_o_fat_data_struct *adata;
1732 
  mach_o_fat_archentry *entry = NULL;
1733 
  unsigned long i;
1734 
 
1735 
  adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
1736 
  BFD_ASSERT (adata != NULL);
1737 
 
1738 
  /* Find index of previous entry.  */
1739 
  if (prev == NULL)
1740 
    i = 0;       /* Start at first one.  */
1741 
  else
1742 
    {
1743 
      for (i = 0; i < adata->nfat_arch; i++)
1744 
        {
1745 
          if (adata->archentries[i].abfd == prev)
1746 
            break;
1747 
        }
1748 
 
1749 
      if (i == adata->nfat_arch)
1750 
        {
1751 
          /* Not found.  */
1752 
          bfd_set_error (bfd_error_bad_value);
1753 
          return NULL;
1754 
        }
1755 
    i++;        /* Get next entry.  */
1756 
  }
1757 
 
1758 
  if (i >= adata->nfat_arch)
1759 
    {
1760 
      bfd_set_error (bfd_error_no_more_archived_files);
1761 
      return NULL;
1762 
    }
1763 
 
1764 
  entry = &adata->archentries[i];
1765 
  if (entry->abfd == NULL)
1766 
    {
1767 
      bfd *nbfd = _bfd_new_bfd_contained_in (archive);
1768 
      char *s = NULL;
1769 
 
1770 
      if (nbfd == NULL)
1771 
        return NULL;
1772 
 
1773 
      nbfd->origin = entry->offset;
1774 
      s = bfd_malloc (strlen (archive->filename) + 1);
1775 
      if (s == NULL)
1776 
        return NULL;
1777 
      strcpy (s, archive->filename);
1778 
      nbfd->filename = s;
1779 
      nbfd->iostream = NULL;
1780 
      entry->abfd = nbfd;
1781 
    }
1782 
 
1783 
  return entry->abfd;
1784 
}
1785 
 
1786 
int
1787 
bfd_mach_o_lookup_section (bfd *abfd,
1788 
                           asection *section,
1789 
                           bfd_mach_o_load_command **mcommand,
1790 
                           bfd_mach_o_section **msection)
1791 
{
1792 
  struct mach_o_data_struct *md = abfd->tdata.mach_o_data;
1793 
  unsigned int i, j, num;
1794 
 
1795 
  bfd_mach_o_load_command *ncmd = NULL;
1796 
  bfd_mach_o_section *nsect = NULL;
1797 
 
1798 
  BFD_ASSERT (mcommand != NULL);
1799 
  BFD_ASSERT (msection != NULL);
1800 
 
1801 
  num = 0;
1802 
  for (i = 0; i < md->header.ncmds; i++)
1803 
    {
1804 
      struct bfd_mach_o_load_command *cmd = &md->commands[i];
1805 
      struct bfd_mach_o_segment_command *seg = NULL;
1806 
 
1807 
      if (cmd->type != BFD_MACH_O_LC_SEGMENT)
1808 
        continue;
1809 
      seg = &cmd->command.segment;
1810 
 
1811 
      if (seg->segment == section)
1812 
        {
1813 
          if (num == 0)
1814 
            ncmd = cmd;
1815 
          num++;
1816 
        }
1817 
 
1818 
      for (j = 0; j < seg->nsects; j++)
1819 
        {
1820 
          struct bfd_mach_o_section *sect = &seg->sections[j];
1821 
 
1822 
          if (sect->bfdsection == section)
1823 
            {
1824 
              if (num == 0)
1825 
                nsect = sect;
1826 
              num++;
1827 
            }
1828 
        }
1829 
    }
1830 
 
1831 
  *mcommand = ncmd;
1832 
  *msection = nsect;
1833 
  return num;
1834 
}
1835 
 
1836 
int
1837 
bfd_mach_o_lookup_command (bfd *abfd,
1838 
                           bfd_mach_o_load_command_type type,
1839 
                           bfd_mach_o_load_command **mcommand)
1840 
{
1841 
  struct mach_o_data_struct *md = NULL;
1842 
  bfd_mach_o_load_command *ncmd = NULL;
1843 
  unsigned int i, num;
1844 
 
1845 
  md = abfd->tdata.mach_o_data;
1846 
 
1847 
  BFD_ASSERT (md != NULL);
1848 
  BFD_ASSERT (mcommand != NULL);
1849 
 
1850 
  num = 0;
1851 
  for (i = 0; i < md->header.ncmds; i++)
1852 
    {
1853 
      struct bfd_mach_o_load_command *cmd = &md->commands[i];
1854 
 
1855 
      if (cmd->type != type)
1856 
        continue;
1857 
 
1858 
      if (num == 0)
1859 
        ncmd = cmd;
1860 
      num++;
1861 
    }
1862 
 
1863 
  *mcommand = ncmd;
1864 
  return num;
1865 
}
1866 
 
1867 
unsigned long
1868 
bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
1869 
{
1870 
  switch (type)
1871 
    {
1872 
    case BFD_MACH_O_CPU_TYPE_MC680x0:
1873 
      return 0x04000000;
1874 
    case BFD_MACH_O_CPU_TYPE_MC88000:
1875 
      return 0xffffe000;
1876 
    case BFD_MACH_O_CPU_TYPE_POWERPC:
1877 
      return 0xc0000000;
1878 
    case BFD_MACH_O_CPU_TYPE_I386:
1879 
      return 0xc0000000;
1880 
    case BFD_MACH_O_CPU_TYPE_SPARC:
1881 
      return 0xf0000000;
1882 
    case BFD_MACH_O_CPU_TYPE_I860:
1883 
      return 0;
1884 
    case BFD_MACH_O_CPU_TYPE_HPPA:
1885 
      return 0xc0000000 - 0x04000000;
1886 
    default:
1887 
      return 0;
1888 
    }
1889 
}
1890 
 
1891 
int
1892 
bfd_mach_o_core_fetch_environment (bfd *abfd,
1893 
                                   unsigned char **rbuf,
1894 
                                   unsigned int *rlen)
1895 
{
1896 
  bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data;
1897 
  unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
1898 
  unsigned int i = 0;
1899 
 
1900 
  for (i = 0; i < mdata->header.ncmds; i++)
1901 
    {
1902 
      bfd_mach_o_load_command *cur = &mdata->commands[i];
1903 
      bfd_mach_o_segment_command *seg = NULL;
1904 
 
1905 
      if (cur->type != BFD_MACH_O_LC_SEGMENT)
1906 
        continue;
1907 
 
1908 
      seg = &cur->command.segment;
1909 
 
1910 
      if ((seg->vmaddr + seg->vmsize) == stackaddr)
1911 
        {
1912 
          unsigned long start = seg->fileoff;
1913 
          unsigned long end = seg->fileoff + seg->filesize;
1914 
          unsigned char *buf = bfd_malloc (1024);
1915 
          unsigned long size = 1024;
1916 
 
1917 
          for (;;)
1918 
            {
1919 
              bfd_size_type nread = 0;
1920 
              unsigned long offset;
1921 
              int found_nonnull = 0;
1922 
 
1923 
              if (size > (end - start))
1924 
                size = (end - start);
1925 
 
1926 
              buf = bfd_realloc_or_free (buf, size);
1927 
              if (buf == NULL)
1928 
                return -1;
1929 
 
1930 
              bfd_seek (abfd, end - size, SEEK_SET);
1931 
              nread = bfd_bread (buf, size, abfd);
1932 
 
1933 
              if (nread != size)
1934 
                {
1935 
                  free (buf);
1936 
                  return -1;
1937 
                }
1938 
 
1939 
              for (offset = 4; offset <= size; offset += 4)
1940 
                {
1941 
                  unsigned long val;
1942 
 
1943 
                  val = *((unsigned long *) (buf + size - offset));
1944 
                  if (! found_nonnull)
1945 
                    {
1946 
                      if (val != 0)
1947 
                        found_nonnull = 1;
1948 
                    }
1949 
                  else if (val == 0x0)
1950 
                    {
1951 
                      unsigned long bottom;
1952 
                      unsigned long top;
1953 
 
1954 
                      bottom = seg->fileoff + seg->filesize - offset;
1955 
                      top = seg->fileoff + seg->filesize - 4;
1956 
                      *rbuf = bfd_malloc (top - bottom);
1957 
                      *rlen = top - bottom;
1958 
 
1959 
                      memcpy (*rbuf, buf + size - *rlen, *rlen);
1960 
                      free (buf);
1961 
                      return 0;
1962 
                    }
1963 
                }
1964 
 
1965 
              if (size == (end - start))
1966 
                break;
1967 
 
1968 
              size *= 2;
1969 
            }
1970 
 
1971 
          free (buf);
1972 
        }
1973 
    }
1974 
 
1975 
  return -1;
1976 
}
1977 
 
1978 
char *
1979 
bfd_mach_o_core_file_failing_command (bfd *abfd)
1980 
{
1981 
  unsigned char *buf = NULL;
1982 
  unsigned int len = 0;
1983 
  int ret = -1;
1984 
 
1985 
  ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
1986 
  if (ret < 0)
1987 
    return NULL;
1988 
 
1989 
  return (char *) buf;
1990 
}
1991 
 
1992 
int
1993 
bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
1994 
{
1995 
  return 0;
1996 
}
1997 
 
1998 
#define TARGET_NAME             mach_o_be_vec
1999 
#define TARGET_STRING           "mach-o-be"
2000 
#define TARGET_BIG_ENDIAN       1
2001 
#define TARGET_ARCHIVE          0
2002 
 
2003 
#include "mach-o-target.c"
2004 
 
2005 
#undef TARGET_NAME
2006 
#undef TARGET_STRING
2007 
#undef TARGET_BIG_ENDIAN
2008 
#undef TARGET_ARCHIVE
2009 
 
2010 
#define TARGET_NAME             mach_o_le_vec
2011 
#define TARGET_STRING           "mach-o-le"
2012 
#define TARGET_BIG_ENDIAN       0
2013 
#define TARGET_ARCHIVE          0
2014 
 
2015 
#include "mach-o-target.c"
2016 
 
2017 
#undef TARGET_NAME
2018 
#undef TARGET_STRING
2019 
#undef TARGET_BIG_ENDIAN
2020 
#undef TARGET_ARCHIVE
2021 
 
2022 
#define TARGET_NAME             mach_o_fat_vec
2023 
#define TARGET_STRING           "mach-o-fat"
2024 
#define TARGET_BIG_ENDIAN       1
2025 
#define TARGET_ARCHIVE          1
2026 
 
2027 
#include "mach-o-target.c"
2028 
 
2029 
#undef TARGET_NAME
2030 
#undef TARGET_STRING
2031 
#undef TARGET_BIG_ENDIAN
2032 
#undef TARGET_ARCHIVE

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