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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [bfd/] [pef.c] - Blame information for rev 816

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1 38 julius
/* PEF support for BFD.
2
   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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 "safe-ctype.h"
24
#include "pef.h"
25
#include "pef-traceback.h"
26
#include "bfd.h"
27
#include "libbfd.h"
28
#include "libiberty.h"
29
 
30
#ifndef BFD_IO_FUNCS
31
#define BFD_IO_FUNCS 0
32
#endif
33
 
34
#define bfd_pef_close_and_cleanup                   _bfd_generic_close_and_cleanup
35
#define bfd_pef_bfd_free_cached_info                _bfd_generic_bfd_free_cached_info
36
#define bfd_pef_new_section_hook                    _bfd_generic_new_section_hook
37
#define bfd_pef_bfd_is_local_label_name             bfd_generic_is_local_label_name
38
#define bfd_pef_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
39
#define bfd_pef_get_lineno                          _bfd_nosymbols_get_lineno
40
#define bfd_pef_find_nearest_line                   _bfd_nosymbols_find_nearest_line
41
#define bfd_pef_find_inliner_info                   _bfd_nosymbols_find_inliner_info
42
#define bfd_pef_bfd_make_debug_symbol               _bfd_nosymbols_bfd_make_debug_symbol
43
#define bfd_pef_read_minisymbols                    _bfd_generic_read_minisymbols
44
#define bfd_pef_minisymbol_to_symbol                _bfd_generic_minisymbol_to_symbol
45
#define bfd_pef_set_arch_mach                       _bfd_generic_set_arch_mach
46
#define bfd_pef_get_section_contents                _bfd_generic_get_section_contents
47
#define bfd_pef_set_section_contents                _bfd_generic_set_section_contents
48
#define bfd_pef_bfd_get_relocated_section_contents  bfd_generic_get_relocated_section_contents
49
#define bfd_pef_bfd_relax_section                   bfd_generic_relax_section
50
#define bfd_pef_bfd_gc_sections                     bfd_generic_gc_sections
51
#define bfd_pef_bfd_merge_sections                  bfd_generic_merge_sections
52
#define bfd_pef_bfd_is_group_section                bfd_generic_is_group_section
53
#define bfd_pef_bfd_discard_group                   bfd_generic_discard_group
54
#define bfd_pef_section_already_linked              _bfd_generic_section_already_linked
55
#define bfd_pef_bfd_link_hash_table_create          _bfd_generic_link_hash_table_create
56
#define bfd_pef_bfd_link_hash_table_free            _bfd_generic_link_hash_table_free
57
#define bfd_pef_bfd_link_add_symbols                _bfd_generic_link_add_symbols
58
#define bfd_pef_bfd_link_just_syms                  _bfd_generic_link_just_syms
59
#define bfd_pef_bfd_final_link                      _bfd_generic_final_link
60
#define bfd_pef_bfd_link_split_section              _bfd_generic_link_split_section
61
#define bfd_pef_get_section_contents_in_window      _bfd_generic_get_section_contents_in_window
62
 
63
static int
64
bfd_pef_parse_traceback_table (bfd *abfd,
65
                               asection *section,
66
                               unsigned char *buf,
67
                               size_t len,
68
                               size_t pos,
69
                               asymbol *sym,
70
                               FILE *file)
71
{
72
  struct traceback_table table;
73
  size_t offset;
74
  const char *s;
75
  asymbol tmpsymbol;
76
 
77
  if (sym == NULL)
78
    sym = & tmpsymbol;
79
 
80
  sym->name = NULL;
81
  sym->value = 0;
82
  sym->the_bfd = abfd;
83
  sym->section = section;
84
  sym->flags = 0;
85
  sym->udata.i = 0;
86
 
87
  /* memcpy is fine since all fields are unsigned char.  */
88
  if ((pos + 8) > len)
89
    return -1;
90
  memcpy (&table, buf + pos, 8);
91
 
92
  /* Calling code relies on returned symbols having a name and
93
     correct offset.  */
94
  if ((table.lang != TB_C) && (table.lang != TB_CPLUSPLUS))
95
    return -1;
96
 
97
  if (! (table.flags2 & TB_NAME_PRESENT))
98
    return -1;
99
 
100
  if (! table.flags1 & TB_HAS_TBOFF)
101
    return -1;
102
 
103
  offset = 8;
104
 
105
  if ((table.flags5 & TB_FLOATPARAMS) || (table.fixedparams))
106
    offset += 4;
107
 
108
  if (table.flags1 & TB_HAS_TBOFF)
109
    {
110
      struct traceback_table_tboff off;
111
 
112
      if ((pos + offset + 4) > len)
113
        return -1;
114
      off.tb_offset = bfd_getb32 (buf + pos + offset);
115
      offset += 4;
116
 
117
      /* Need to subtract 4 because the offset includes the 0x0L
118
         preceding the table.  */
119
      if (file != NULL)
120
        fprintf (file, " [offset = 0x%lx]", off.tb_offset);
121
 
122
      if ((file == NULL) && ((off.tb_offset + 4) > (pos + offset)))
123
        return -1;
124
 
125
      sym->value = pos - off.tb_offset - 4;
126
    }
127
 
128
  if (table.flags2 & TB_INT_HNDL)
129
    offset += 4;
130
 
131
  if (table.flags1 & TB_HAS_CTL)
132
    {
133
      struct traceback_table_anchors anchors;
134
 
135
      if ((pos + offset + 4) > len)
136
        return -1;
137
      anchors.ctl_info = bfd_getb32 (buf + pos + offset);
138
      offset += 4;
139
 
140
      if (anchors.ctl_info > 1024)
141
        return -1;
142
 
143
      offset += anchors.ctl_info * 4;
144
    }
145
 
146
  if (table.flags2 & TB_NAME_PRESENT)
147
    {
148
      struct traceback_table_routine name;
149
      char *namebuf;
150
 
151
      if ((pos + offset + 2) > len)
152
        return -1;
153
      name.name_len = bfd_getb16 (buf + pos + offset);
154
      offset += 2;
155
 
156
      if (name.name_len > 4096)
157
        return -1;
158
 
159
      if ((pos + offset + name.name_len) > len)
160
        return -1;
161
 
162
      namebuf = bfd_alloc (abfd, name.name_len + 1);
163
      if (namebuf == NULL)
164
        return -1;
165
 
166
      memcpy (namebuf, buf + pos + offset, name.name_len);
167
      namebuf[name.name_len] = '\0';
168
 
169
      /* Strip leading period inserted by compiler.  */
170
      if (namebuf[0] == '.')
171
        memmove (namebuf, namebuf + 1, name.name_len + 1);
172
 
173
      sym->name = namebuf;
174
 
175
      for (s = sym->name; (*s != '\0'); s++)
176
        if (! ISPRINT (*s))
177
          return -1;
178
 
179
      offset += name.name_len;
180
    }
181
 
182
  if (table.flags2 & TB_USES_ALLOCA)
183
    offset += 4;
184
 
185
  if (table.flags4 & TB_HAS_VEC_INFO)
186
    offset += 4;
187
 
188
  if (file != NULL)
189
    fprintf (file, " [length = 0x%lx]", (long) offset);
190
 
191
  return offset;
192
}
193
 
194
static void
195
bfd_pef_print_symbol (bfd *abfd,
196
                      void * afile,
197
                      asymbol *symbol,
198
                      bfd_print_symbol_type how)
199
{
200
  FILE *file = (FILE *) afile;
201
 
202
  switch (how)
203
    {
204
    case bfd_print_symbol_name:
205
      fprintf (file, "%s", symbol->name);
206
      break;
207
    default:
208
      bfd_print_symbol_vandf (abfd, (void *) file, symbol);
209
      fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
210
      if (CONST_STRNEQ (symbol->name, "__traceback_"))
211
        {
212
          unsigned char *buf = alloca (symbol->udata.i);
213
          size_t offset = symbol->value + 4;
214
          size_t len = symbol->udata.i;
215
          int ret;
216
 
217
          bfd_get_section_contents (abfd, symbol->section, buf, offset, len);
218
          ret = bfd_pef_parse_traceback_table (abfd, symbol->section, buf,
219
                                               len, 0, NULL, file);
220
          if (ret < 0)
221
            fprintf (file, " [ERROR]");
222
        }
223
    }
224
}
225
 
226
static void
227
bfd_pef_convert_architecture (unsigned long architecture,
228
                              enum bfd_architecture *type,
229
                              unsigned long *subtype)
230
{
231
  const unsigned long ARCH_POWERPC = 0x70777063; /* 'pwpc'.  */
232
  const unsigned long ARCH_M68K = 0x6d36386b; /* 'm68k'.  */
233
 
234
  *subtype = bfd_arch_unknown;
235
  *type = bfd_arch_unknown;
236
 
237
  if (architecture == ARCH_POWERPC)
238
    *type = bfd_arch_powerpc;
239
  else if (architecture == ARCH_M68K)
240
    *type = bfd_arch_m68k;
241
}
242
 
243
static bfd_boolean
244
bfd_pef_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
245
{
246
  return TRUE;
247
}
248
 
249
static const char *bfd_pef_section_name (bfd_pef_section *section)
250
{
251
  switch (section->section_kind)
252
    {
253
    case BFD_PEF_SECTION_CODE: return "code";
254
    case BFD_PEF_SECTION_UNPACKED_DATA: return "unpacked-data";
255
    case BFD_PEF_SECTION_PACKED_DATA: return "packed-data";
256
    case BFD_PEF_SECTION_CONSTANT: return "constant";
257
    case BFD_PEF_SECTION_LOADER: return "loader";
258
    case BFD_PEF_SECTION_DEBUG: return "debug";
259
    case BFD_PEF_SECTION_EXEC_DATA: return "exec-data";
260
    case BFD_PEF_SECTION_EXCEPTION: return "exception";
261
    case BFD_PEF_SECTION_TRACEBACK: return "traceback";
262
    default: return "unknown";
263
    }
264
}
265
 
266
static unsigned long bfd_pef_section_flags (bfd_pef_section *section)
267
{
268
  switch (section->section_kind)
269
    {
270
    case BFD_PEF_SECTION_CODE:
271
      return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
272
    case BFD_PEF_SECTION_UNPACKED_DATA:
273
    case BFD_PEF_SECTION_PACKED_DATA:
274
    case BFD_PEF_SECTION_CONSTANT:
275
    case BFD_PEF_SECTION_LOADER:
276
    case BFD_PEF_SECTION_DEBUG:
277
    case BFD_PEF_SECTION_EXEC_DATA:
278
    case BFD_PEF_SECTION_EXCEPTION:
279
    case BFD_PEF_SECTION_TRACEBACK:
280
    default:
281
      return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
282
    }
283
}
284
 
285
static asection *
286
bfd_pef_make_bfd_section (bfd *abfd, bfd_pef_section *section)
287
{
288
  asection *bfdsec;
289
  const char *name = bfd_pef_section_name (section);
290
 
291
  bfdsec = bfd_make_section_anyway (abfd, name);
292
  if (bfdsec == NULL)
293
    return NULL;
294
 
295
  bfdsec->vma = section->default_address + section->container_offset;
296
  bfdsec->lma = section->default_address + section->container_offset;
297
  bfdsec->size = section->container_length;
298
  bfdsec->filepos = section->container_offset;
299
  bfdsec->alignment_power = section->alignment;
300
 
301
  bfdsec->flags = bfd_pef_section_flags (section);
302
 
303
  return bfdsec;
304
}
305
 
306
int
307
bfd_pef_parse_loader_header (bfd *abfd ATTRIBUTE_UNUSED,
308
                             unsigned char *buf,
309
                             size_t len,
310
                             bfd_pef_loader_header *header)
311
{
312
  BFD_ASSERT (len == 56);
313
 
314
  header->main_section = bfd_getb32 (buf);
315
  header->main_offset = bfd_getb32 (buf + 4);
316
  header->init_section = bfd_getb32 (buf + 8);
317
  header->init_offset = bfd_getb32 (buf + 12);
318
  header->term_section = bfd_getb32 (buf + 16);
319
  header->term_offset = bfd_getb32 (buf + 20);
320
  header->imported_library_count = bfd_getb32 (buf + 24);
321
  header->total_imported_symbol_count = bfd_getb32 (buf + 28);
322
  header->reloc_section_count = bfd_getb32 (buf + 32);
323
  header->reloc_instr_offset = bfd_getb32 (buf + 36);
324
  header->loader_strings_offset = bfd_getb32 (buf + 40);
325
  header->export_hash_offset = bfd_getb32 (buf + 44);
326
  header->export_hash_table_power = bfd_getb32 (buf + 48);
327
  header->exported_symbol_count = bfd_getb32 (buf + 52);
328
 
329
  return 0;
330
}
331
 
332
int
333
bfd_pef_parse_imported_library (bfd *abfd ATTRIBUTE_UNUSED,
334
                                unsigned char *buf,
335
                                size_t len,
336
                                bfd_pef_imported_library *header)
337
{
338
  BFD_ASSERT (len == 24);
339
 
340
  header->name_offset = bfd_getb32 (buf);
341
  header->old_implementation_version = bfd_getb32 (buf + 4);
342
  header->current_version = bfd_getb32 (buf + 8);
343
  header->imported_symbol_count = bfd_getb32 (buf + 12);
344
  header->first_imported_symbol = bfd_getb32 (buf + 16);
345
  header->options = buf[20];
346
  header->reserved_a = buf[21];
347
  header->reserved_b = bfd_getb16 (buf + 22);
348
 
349
  return 0;
350
}
351
 
352
int
353
bfd_pef_parse_imported_symbol (bfd *abfd ATTRIBUTE_UNUSED,
354
                               unsigned char *buf,
355
                               size_t len,
356
                               bfd_pef_imported_symbol *symbol)
357
{
358
  unsigned long value;
359
 
360
  BFD_ASSERT (len == 4);
361
 
362
  value = bfd_getb32 (buf);
363
  symbol->class = value >> 24;
364
  symbol->name = value & 0x00ffffff;
365
 
366
  return 0;
367
}
368
 
369
int
370
bfd_pef_scan_section (bfd *abfd, bfd_pef_section *section)
371
{
372
  unsigned char buf[28];
373
 
374
  bfd_seek (abfd, section->header_offset, SEEK_SET);
375
  if (bfd_bread ((void *) buf, 28, abfd) != 28)
376
    return -1;
377
 
378
  section->name_offset = bfd_h_get_32 (abfd, buf);
379
  section->default_address = bfd_h_get_32 (abfd, buf + 4);
380
  section->total_length = bfd_h_get_32 (abfd, buf + 8);
381
  section->unpacked_length = bfd_h_get_32 (abfd, buf + 12);
382
  section->container_length = bfd_h_get_32 (abfd, buf + 16);
383
  section->container_offset = bfd_h_get_32 (abfd, buf + 20);
384
  section->section_kind = buf[24];
385
  section->share_kind = buf[25];
386
  section->alignment = buf[26];
387
  section->reserved = buf[27];
388
 
389
  section->bfd_section = bfd_pef_make_bfd_section (abfd, section);
390
  if (section->bfd_section == NULL)
391
    return -1;
392
 
393
  return 0;
394
}
395
 
396
void
397
bfd_pef_print_loader_header (bfd *abfd ATTRIBUTE_UNUSED,
398
                             bfd_pef_loader_header *header,
399
                             FILE *file)
400
{
401
  fprintf (file, "main_section: %ld\n", header->main_section);
402
  fprintf (file, "main_offset: %lu\n", header->main_offset);
403
  fprintf (file, "init_section: %ld\n", header->init_section);
404
  fprintf (file, "init_offset: %lu\n", header->init_offset);
405
  fprintf (file, "term_section: %ld\n", header->term_section);
406
  fprintf (file, "term_offset: %lu\n", header->term_offset);
407
  fprintf (file, "imported_library_count: %lu\n",
408
           header->imported_library_count);
409
  fprintf (file, "total_imported_symbol_count: %lu\n",
410
           header->total_imported_symbol_count);
411
  fprintf (file, "reloc_section_count: %lu\n", header->reloc_section_count);
412
  fprintf (file, "reloc_instr_offset: %lu\n", header->reloc_instr_offset);
413
  fprintf (file, "loader_strings_offset: %lu\n",
414
           header->loader_strings_offset);
415
  fprintf (file, "export_hash_offset: %lu\n", header->export_hash_offset);
416
  fprintf (file, "export_hash_table_power: %lu\n",
417
           header->export_hash_table_power);
418
  fprintf (file, "exported_symbol_count: %lu\n",
419
           header->exported_symbol_count);
420
}
421
 
422
int
423
bfd_pef_print_loader_section (bfd *abfd, FILE *file)
424
{
425
  bfd_pef_loader_header header;
426
  asection *loadersec = NULL;
427
  unsigned char *loaderbuf = NULL;
428
  size_t loaderlen = 0;
429
 
430
  loadersec = bfd_get_section_by_name (abfd, "loader");
431
  if (loadersec == NULL)
432
    return -1;
433
 
434
  loaderlen = loadersec->size;
435
  loaderbuf = bfd_malloc (loaderlen);
436
 
437
  if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0
438
      || bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen
439
      || loaderlen < 56
440
      || bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header) < 0)
441
    {
442
      free (loaderbuf);
443
      return -1;
444
    }
445
 
446
  bfd_pef_print_loader_header (abfd, &header, file);
447
  return 0;
448
}
449
 
450
int
451
bfd_pef_scan_start_address (bfd *abfd)
452
{
453
  bfd_pef_loader_header header;
454
  asection *section;
455
 
456
  asection *loadersec = NULL;
457
  unsigned char *loaderbuf = NULL;
458
  size_t loaderlen = 0;
459
  int ret;
460
 
461
  loadersec = bfd_get_section_by_name (abfd, "loader");
462
  if (loadersec == NULL)
463
    goto end;
464
 
465
  loaderlen = loadersec->size;
466
  loaderbuf = bfd_malloc (loaderlen);
467
  if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0)
468
    goto error;
469
  if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen)
470
    goto error;
471
 
472
  if (loaderlen < 56)
473
    goto error;
474
  ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
475
  if (ret < 0)
476
    goto error;
477
 
478
  if (header.main_section < 0)
479
    goto end;
480
 
481
  for (section = abfd->sections; section != NULL; section = section->next)
482
    if ((section->index + 1) == header.main_section)
483
      break;
484
 
485
  if (section == NULL)
486
    goto error;
487
 
488
  abfd->start_address = section->vma + header.main_offset;
489
 
490
 end:
491
  if (loaderbuf != NULL)
492
    free (loaderbuf);
493
  return 0;
494
 
495
 error:
496
  if (loaderbuf != NULL)
497
    free (loaderbuf);
498
  return -1;
499
}
500
 
501
int
502
bfd_pef_scan (abfd, header, mdata)
503
     bfd *abfd;
504
     bfd_pef_header *header;
505
     bfd_pef_data_struct *mdata;
506
{
507
  unsigned int i;
508
  enum bfd_architecture cputype;
509
  unsigned long cpusubtype;
510
 
511
  mdata->header = *header;
512
 
513
  bfd_pef_convert_architecture (header->architecture, &cputype, &cpusubtype);
514
  if (cputype == bfd_arch_unknown)
515
    {
516
      fprintf (stderr, "bfd_pef_scan: unknown architecture 0x%lx\n",
517
               header->architecture);
518
      return -1;
519
    }
520
  bfd_set_arch_mach (abfd, cputype, cpusubtype);
521
 
522
  mdata->header = *header;
523
 
524
  abfd->flags = (abfd->xvec->object_flags
525
                 | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS)));
526
 
527
  if (header->section_count != 0)
528
    {
529
      mdata->sections = bfd_alloc (abfd, header->section_count * sizeof (bfd_pef_section));
530
 
531
      if (mdata->sections == NULL)
532
        return -1;
533
 
534
      for (i = 0; i < header->section_count; i++)
535
        {
536
          bfd_pef_section *cur = &mdata->sections[i];
537
          cur->header_offset = 40 + (i * 28);
538
          if (bfd_pef_scan_section (abfd, cur) < 0)
539
            return -1;
540
        }
541
    }
542
 
543
  if (bfd_pef_scan_start_address (abfd) < 0)
544
    return -1;
545
 
546
  abfd->tdata.pef_data = mdata;
547
 
548
  return 0;
549
}
550
 
551
static int
552
bfd_pef_read_header (bfd *abfd, bfd_pef_header *header)
553
{
554
  unsigned char buf[40];
555
 
556
  bfd_seek (abfd, 0, SEEK_SET);
557
 
558
  if (bfd_bread ((void *) buf, 40, abfd) != 40)
559
    return -1;
560
 
561
  header->tag1 = bfd_getb32 (buf);
562
  header->tag2 = bfd_getb32 (buf + 4);
563
  header->architecture = bfd_getb32 (buf + 8);
564
  header->format_version = bfd_getb32 (buf + 12);
565
  header->timestamp = bfd_getb32 (buf + 16);
566
  header->old_definition_version = bfd_getb32 (buf + 20);
567
  header->old_implementation_version = bfd_getb32 (buf + 24);
568
  header->current_version = bfd_getb32 (buf + 28);
569
  header->section_count = bfd_getb32 (buf + 32) + 1;
570
  header->instantiated_section_count = bfd_getb32 (buf + 34);
571
  header->reserved = bfd_getb32 (buf + 36);
572
 
573
  return 0;
574
}
575
 
576
static const bfd_target *
577
bfd_pef_object_p (bfd *abfd)
578
{
579
  struct bfd_preserve preserve;
580
  bfd_pef_header header;
581
 
582
  preserve.marker = NULL;
583
  if (bfd_pef_read_header (abfd, &header) != 0)
584
    goto wrong;
585
 
586
  if (header.tag1 != BFD_PEF_TAG1 || header.tag2 != BFD_PEF_TAG2)
587
    goto wrong;
588
 
589
  preserve.marker = bfd_zalloc (abfd, sizeof (bfd_pef_data_struct));
590
  if (preserve.marker == NULL
591
      || !bfd_preserve_save (abfd, &preserve))
592
    goto fail;
593
 
594
  if (bfd_pef_scan (abfd, &header,
595
                    (bfd_pef_data_struct *) preserve.marker) != 0)
596
    goto wrong;
597
 
598
  bfd_preserve_finish (abfd, &preserve);
599
  return abfd->xvec;
600
 
601
 wrong:
602
  bfd_set_error (bfd_error_wrong_format);
603
 
604
 fail:
605
  if (preserve.marker != NULL)
606
    bfd_preserve_restore (abfd, &preserve);
607
  return NULL;
608
}
609
 
610
static int
611
bfd_pef_parse_traceback_tables (bfd *abfd,
612
                                asection *sec,
613
                                unsigned char *buf,
614
                                size_t len,
615
                                long *nsym,
616
                                asymbol **csym)
617
{
618
  char *name;
619
 
620
  asymbol function;
621
  asymbol traceback;
622
 
623
  const char *const tbprefix = "__traceback_";
624
  size_t tbnamelen;
625
 
626
  size_t pos = 0;
627
  unsigned long count = 0;
628
  int ret;
629
 
630
  for (;;)
631
    {
632
      /* We're reading symbols two at a time.  */
633
      if (csym && ((csym[count] == NULL) || (csym[count + 1] == NULL)))
634
        break;
635
 
636
      pos += 3;
637
      pos -= (pos % 4);
638
 
639
      while ((pos + 4) <= len)
640
        {
641
          if (bfd_getb32 (buf + pos) == 0)
642
            break;
643
          pos += 4;
644
        }
645
 
646
      if ((pos + 4) > len)
647
        break;
648
 
649
      ret = bfd_pef_parse_traceback_table (abfd, sec, buf, len, pos + 4,
650
                                           &function, 0);
651
      if (ret < 0)
652
        {
653
          /* Skip over 0x0L to advance to next possible traceback table.  */
654
          pos += 4;
655
          continue;
656
        }
657
 
658
      BFD_ASSERT (function.name != NULL);
659
 
660
      /* Don't bother to compute the name if we are just
661
         counting symbols.  */
662
      if (csym)
663
        {
664
          tbnamelen = strlen (tbprefix) + strlen (function.name);
665
          name = bfd_alloc (abfd, tbnamelen + 1);
666
          if (name == NULL)
667
            {
668
              bfd_release (abfd, (void *) function.name);
669
              function.name = NULL;
670
              break;
671
            }
672
          snprintf (name, tbnamelen + 1, "%s%s", tbprefix, function.name);
673
          traceback.name = name;
674
          traceback.value = pos;
675
          traceback.the_bfd = abfd;
676
          traceback.section = sec;
677
          traceback.flags = 0;
678
          traceback.udata.i = ret;
679
 
680
          *(csym[count]) = function;
681
          *(csym[count + 1]) = traceback;
682
        }
683
 
684
      pos += ret;
685
      count += 2;
686
    }
687
 
688
  *nsym = count;
689
  return 0;
690
}
691
 
692
static int
693
bfd_pef_parse_function_stub (bfd *abfd ATTRIBUTE_UNUSED,
694
                             unsigned char *buf,
695
                             size_t len,
696
                             unsigned long *offset)
697
{
698
  BFD_ASSERT (len == 24);
699
 
700
  if ((bfd_getb32 (buf) & 0xffff0000) != 0x81820000)
701
    return -1;
702
  if (bfd_getb32 (buf + 4) != 0x90410014)
703
    return -1;
704
  if (bfd_getb32 (buf + 8) != 0x800c0000)
705
    return -1;
706
  if (bfd_getb32 (buf + 12) != 0x804c0004)
707
    return -1;
708
  if (bfd_getb32 (buf + 16) != 0x7c0903a6)
709
    return -1;
710
  if (bfd_getb32 (buf + 20) != 0x4e800420)
711
    return -1;
712
 
713
  if (offset != NULL)
714
    *offset = (bfd_getb32 (buf) & 0x0000ffff) / 4;
715
 
716
  return 0;
717
}
718
 
719
static int
720
bfd_pef_parse_function_stubs (bfd *abfd,
721
                              asection *codesec,
722
                              unsigned char *codebuf,
723
                              size_t codelen,
724
                              unsigned char *loaderbuf,
725
                              size_t loaderlen,
726
                              unsigned long *nsym,
727
                              asymbol **csym)
728
{
729
  const char *const sprefix = "__stub_";
730
 
731
  size_t codepos = 0;
732
  unsigned long count = 0;
733
 
734
  bfd_pef_loader_header header;
735
  bfd_pef_imported_library *libraries = NULL;
736
  bfd_pef_imported_symbol *imports = NULL;
737
 
738
  unsigned long i;
739
  int ret;
740
 
741
  if (loaderlen < 56)
742
    goto error;
743
 
744
  ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
745
  if (ret < 0)
746
    goto error;
747
 
748
  libraries = bfd_malloc
749
    (header.imported_library_count * sizeof (bfd_pef_imported_library));
750
  imports = bfd_malloc
751
    (header.total_imported_symbol_count * sizeof (bfd_pef_imported_symbol));
752
 
753
  if (loaderlen < (56 + (header.imported_library_count * 24)))
754
    goto error;
755
  for (i = 0; i < header.imported_library_count; i++)
756
    {
757
      ret = bfd_pef_parse_imported_library
758
        (abfd, loaderbuf + 56 + (i * 24), 24, &libraries[i]);
759
      if (ret < 0)
760
        goto error;
761
    }
762
 
763
  if (loaderlen < (56 + (header.imported_library_count * 24)
764
                   + (header.total_imported_symbol_count * 4)))
765
    goto error;
766
  for (i = 0; i < header.total_imported_symbol_count; i++)
767
    {
768
      ret = (bfd_pef_parse_imported_symbol
769
             (abfd,
770
              loaderbuf + 56 + (header.imported_library_count * 24) + (i * 4),
771
              4, &imports[i]));
772
      if (ret < 0)
773
        goto error;
774
    }
775
 
776
  codepos = 0;
777
 
778
  for (;;)
779
    {
780
      asymbol sym;
781
      const char *symname;
782
      char *name;
783
      unsigned long index;
784
      int ret;
785
 
786
      if (csym && (csym[count] == NULL))
787
        break;
788
 
789
      codepos += 3;
790
      codepos -= (codepos % 4);
791
 
792
      while ((codepos + 4) <= codelen)
793
        {
794
          if ((bfd_getb32 (codebuf + codepos) & 0xffff0000) == 0x81820000)
795
            break;
796
          codepos += 4;
797
        }
798
 
799
      if ((codepos + 4) > codelen)
800
        break;
801
 
802
      ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &index);
803
      if (ret < 0)
804
        {
805
          codepos += 24;
806
          continue;
807
        }
808
 
809
      if (index >= header.total_imported_symbol_count)
810
        {
811
          codepos += 24;
812
          continue;
813
        }
814
 
815
      {
816
        size_t max, namelen;
817
        const char *s;
818
 
819
        if (loaderlen < (header.loader_strings_offset + imports[index].name))
820
          goto error;
821
 
822
        max = loaderlen - (header.loader_strings_offset + imports[index].name);
823
        symname = (char *) loaderbuf;
824
        symname += header.loader_strings_offset + imports[index].name;
825
        namelen = 0;
826
        for (s = symname; s < (symname + max); s++)
827
          {
828
            if (*s == '\0')
829
              break;
830
            if (! ISPRINT (*s))
831
              goto error;
832
            namelen++;
833
          }
834
        if (*s != '\0')
835
          goto error;
836
 
837
        name = bfd_alloc (abfd, strlen (sprefix) + namelen + 1);
838
        if (name == NULL)
839
          break;
840
 
841
        snprintf (name, strlen (sprefix) + namelen + 1, "%s%s",
842
                  sprefix, symname);
843
        sym.name = name;
844
      }
845
 
846
      sym.value = codepos;
847
      sym.the_bfd = abfd;
848
      sym.section = codesec;
849
      sym.flags = 0;
850
      sym.udata.i = 0;
851
 
852
      codepos += 24;
853
 
854
      if (csym != NULL)
855
        *(csym[count]) = sym;
856
 
857
      count++;
858
    }
859
 
860
  goto end;
861
 
862
 end:
863
  if (libraries != NULL)
864
    free (libraries);
865
  if (imports != NULL)
866
    free (imports);
867
  *nsym = count;
868
  return 0;
869
 
870
 error:
871
  if (libraries != NULL)
872
    free (libraries);
873
  if (imports != NULL)
874
    free (imports);
875
  *nsym = count;
876
  return -1;
877
}
878
 
879
static long
880
bfd_pef_parse_symbols (bfd *abfd, asymbol **csym)
881
{
882
  unsigned long count = 0;
883
 
884
  asection *codesec = NULL;
885
  unsigned char *codebuf = NULL;
886
  size_t codelen = 0;
887
 
888
  asection *loadersec = NULL;
889
  unsigned char *loaderbuf = NULL;
890
  size_t loaderlen = 0;
891
 
892
  codesec = bfd_get_section_by_name (abfd, "code");
893
  if (codesec != NULL)
894
    {
895
      codelen = codesec->size;
896
      codebuf = bfd_malloc (codelen);
897
      if (bfd_seek (abfd, codesec->filepos, SEEK_SET) < 0)
898
        goto end;
899
      if (bfd_bread ((void *) codebuf, codelen, abfd) != codelen)
900
        goto end;
901
    }
902
 
903
  loadersec = bfd_get_section_by_name (abfd, "loader");
904
  if (loadersec != NULL)
905
    {
906
      loaderlen = loadersec->size;
907
      loaderbuf = bfd_malloc (loaderlen);
908
      if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0)
909
        goto end;
910
      if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen)
911
        goto end;
912
    }
913
 
914
  count = 0;
915
  if (codesec != NULL)
916
    {
917
      long ncount = 0;
918
      bfd_pef_parse_traceback_tables (abfd, codesec, codebuf, codelen,
919
                                      &ncount, csym);
920
      count += ncount;
921
    }
922
 
923
  if ((codesec != NULL) && (loadersec != NULL))
924
    {
925
      unsigned long ncount = 0;
926
      bfd_pef_parse_function_stubs
927
        (abfd, codesec, codebuf, codelen, loaderbuf, loaderlen, &ncount,
928
         (csym != NULL) ? (csym + count) : NULL);
929
      count += ncount;
930
    }
931
 
932
  if (csym != NULL)
933
    csym[count] = NULL;
934
 
935
 end:
936
  if (codebuf != NULL)
937
    free (codebuf);
938
 
939
  if (loaderbuf != NULL)
940
    free (loaderbuf);
941
 
942
  return count;
943
}
944
 
945
static long
946
bfd_pef_count_symbols (bfd *abfd)
947
{
948
  return bfd_pef_parse_symbols (abfd, NULL);
949
}
950
 
951
static long
952
bfd_pef_get_symtab_upper_bound (bfd *abfd)
953
{
954
  long nsyms = bfd_pef_count_symbols (abfd);
955
 
956
  if (nsyms < 0)
957
    return nsyms;
958
  return ((nsyms + 1) * sizeof (asymbol *));
959
}
960
 
961
static long
962
bfd_pef_canonicalize_symtab (bfd *abfd, asymbol **alocation)
963
{
964
  long i;
965
  asymbol *syms;
966
  long ret;
967
  long nsyms = bfd_pef_count_symbols (abfd);
968
 
969
  if (nsyms < 0)
970
    return nsyms;
971
 
972
  syms = bfd_alloc (abfd, nsyms * sizeof (asymbol));
973
  if (syms == NULL)
974
    return -1;
975
 
976
  for (i = 0; i < nsyms; i++)
977
    alocation[i] = &syms[i];
978
 
979
  alocation[nsyms] = NULL;
980
 
981
  ret = bfd_pef_parse_symbols (abfd, alocation);
982
  if (ret != nsyms)
983
    return 0;
984
 
985
  return ret;
986
}
987
 
988
#define bfd_pef_make_empty_symbol _bfd_generic_make_empty_symbol
989
 
990
static void
991
bfd_pef_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
992
                         asymbol *symbol,
993
                         symbol_info *ret)
994
{
995
  bfd_symbol_info (symbol, ret);
996
}
997
 
998
static int
999
bfd_pef_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
1000
                        struct bfd_link_info *info ATTRIBUTE_UNUSED)
1001
{
1002
  return 0;
1003
}
1004
 
1005
const bfd_target pef_vec =
1006
{
1007
  "pef",                        /* Name.  */
1008
  bfd_target_pef_flavour,       /* Flavour.  */
1009
  BFD_ENDIAN_BIG,               /* Byteorder.  */
1010
  BFD_ENDIAN_BIG,               /* Header_byteorder.  */
1011
  (HAS_RELOC | EXEC_P |         /* Object flags.  */
1012
   HAS_LINENO | HAS_DEBUG |
1013
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
1014
  (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
1015
   | SEC_ROM | SEC_HAS_CONTENTS), /* Section_flags.  */
1016
  0,                             /* Symbol_leading_char.  */
1017
  ' ',                          /* AR_pad_char.  */
1018
  16,                           /* AR_max_namelen.  */
1019
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1020
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1021
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
1022
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1023
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1024
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
1025
  {                             /* bfd_check_format.  */
1026
    _bfd_dummy_target,
1027
    bfd_pef_object_p,           /* bfd_check_format.  */
1028
    _bfd_dummy_target,
1029
    _bfd_dummy_target,
1030
  },
1031
  {                             /* bfd_set_format.  */
1032
    bfd_false,
1033
    bfd_pef_mkobject,
1034
    bfd_false,
1035
    bfd_false,
1036
  },
1037
  {                             /* bfd_write_contents.  */
1038
    bfd_false,
1039
    bfd_true,
1040
    bfd_false,
1041
    bfd_false,
1042
  },
1043
 
1044
  BFD_JUMP_TABLE_GENERIC (bfd_pef),
1045
  BFD_JUMP_TABLE_COPY (_bfd_generic),
1046
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
1047
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1048
  BFD_JUMP_TABLE_SYMBOLS (bfd_pef),
1049
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1050
  BFD_JUMP_TABLE_WRITE (bfd_pef),
1051
  BFD_JUMP_TABLE_LINK (bfd_pef),
1052
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1053
 
1054
  NULL,
1055
 
1056
  NULL
1057
};
1058
 
1059
#define bfd_pef_xlib_close_and_cleanup              _bfd_generic_close_and_cleanup
1060
#define bfd_pef_xlib_bfd_free_cached_info           _bfd_generic_bfd_free_cached_info
1061
#define bfd_pef_xlib_new_section_hook               _bfd_generic_new_section_hook
1062
#define bfd_pef_xlib_get_section_contents           _bfd_generic_get_section_contents
1063
#define bfd_pef_xlib_set_section_contents           _bfd_generic_set_section_contents
1064
#define bfd_pef_xlib_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
1065
#define bfd_pef_xlib_set_section_contents_in_window _bfd_generic_set_section_contents_in_window
1066
 
1067
static int
1068
bfd_pef_xlib_read_header (bfd *abfd, bfd_pef_xlib_header *header)
1069
{
1070
  unsigned char buf[76];
1071
 
1072
  bfd_seek (abfd, 0, SEEK_SET);
1073
 
1074
  if (bfd_bread ((void *) buf, 76, abfd) != 76)
1075
    return -1;
1076
 
1077
  header->tag1 = bfd_getb32 (buf);
1078
  header->tag2 = bfd_getb32 (buf + 4);
1079
  header->current_format = bfd_getb32 (buf + 8);
1080
  header->container_strings_offset = bfd_getb32 (buf + 12);
1081
  header->export_hash_offset = bfd_getb32 (buf + 16);
1082
  header->export_key_offset = bfd_getb32 (buf + 20);
1083
  header->export_symbol_offset = bfd_getb32 (buf + 24);
1084
  header->export_names_offset = bfd_getb32 (buf + 28);
1085
  header->export_hash_table_power = bfd_getb32 (buf + 32);
1086
  header->exported_symbol_count = bfd_getb32 (buf + 36);
1087
  header->frag_name_offset = bfd_getb32 (buf + 40);
1088
  header->frag_name_length = bfd_getb32 (buf + 44);
1089
  header->dylib_path_offset = bfd_getb32 (buf + 48);
1090
  header->dylib_path_length = bfd_getb32 (buf + 52);
1091
  header->cpu_family = bfd_getb32 (buf + 56);
1092
  header->cpu_model = bfd_getb32 (buf + 60);
1093
  header->date_time_stamp = bfd_getb32 (buf + 64);
1094
  header->current_version = bfd_getb32 (buf + 68);
1095
  header->old_definition_version = bfd_getb32 (buf + 72);
1096
  header->old_implementation_version = bfd_getb32 (buf + 76);
1097
 
1098
  return 0;
1099
}
1100
 
1101
static int
1102
bfd_pef_xlib_scan (bfd *abfd, bfd_pef_xlib_header *header)
1103
{
1104
  bfd_pef_xlib_data_struct *mdata = NULL;
1105
 
1106
  mdata = bfd_alloc (abfd, sizeof (* mdata));
1107
  if (mdata == NULL)
1108
    return -1;
1109
 
1110
  mdata->header = *header;
1111
 
1112
  abfd->flags = (abfd->xvec->object_flags
1113
                 | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS)));
1114
 
1115
  abfd->tdata.pef_xlib_data = mdata;
1116
 
1117
  return 0;
1118
}
1119
 
1120
static const bfd_target *
1121
bfd_pef_xlib_object_p (bfd *abfd)
1122
{
1123
  struct bfd_preserve preserve;
1124
  bfd_pef_xlib_header header;
1125
 
1126
  if (bfd_pef_xlib_read_header (abfd, &header) != 0)
1127
    {
1128
      bfd_set_error (bfd_error_wrong_format);
1129
      return NULL;
1130
    }
1131
 
1132
  if ((header.tag1 != BFD_PEF_XLIB_TAG1)
1133
      || ((header.tag2 != BFD_PEF_VLIB_TAG2)
1134
          && (header.tag2 != BFD_PEF_BLIB_TAG2)))
1135
    {
1136
      bfd_set_error (bfd_error_wrong_format);
1137
      return NULL;
1138
    }
1139
 
1140
  if (! bfd_preserve_save (abfd, &preserve))
1141
    {
1142
      bfd_set_error (bfd_error_wrong_format);
1143
      return NULL;
1144
    }
1145
 
1146
  if (bfd_pef_xlib_scan (abfd, &header) != 0)
1147
    {
1148
      bfd_preserve_restore (abfd, &preserve);
1149
      bfd_set_error (bfd_error_wrong_format);
1150
      return NULL;
1151
    }
1152
 
1153
  bfd_preserve_finish (abfd, &preserve);
1154
  return abfd->xvec;
1155
}
1156
 
1157
const bfd_target pef_xlib_vec =
1158
{
1159
  "pef-xlib",                   /* Name.  */
1160
  bfd_target_pef_xlib_flavour,  /* Flavour.  */
1161
  BFD_ENDIAN_BIG,               /* Byteorder */
1162
  BFD_ENDIAN_BIG,               /* Header_byteorder.  */
1163
  (HAS_RELOC | EXEC_P |         /* Object flags.  */
1164
   HAS_LINENO | HAS_DEBUG |
1165
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
1166
  (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
1167
   | SEC_ROM | SEC_HAS_CONTENTS),/* Section_flags.  */
1168
  0,                             /* Symbol_leading_char.  */
1169
  ' ',                          /* AR_pad_char.  */
1170
  16,                           /* AR_max_namelen.  */
1171
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1172
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1173
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
1174
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1175
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1176
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Headers.  */
1177
  {                             /* bfd_check_format.  */
1178
    _bfd_dummy_target,
1179
    bfd_pef_xlib_object_p,      /* bfd_check_format.  */
1180
    _bfd_dummy_target,
1181
    _bfd_dummy_target,
1182
  },
1183
  {                             /* bfd_set_format.  */
1184
    bfd_false,
1185
    bfd_pef_mkobject,
1186
    bfd_false,
1187
    bfd_false,
1188
  },
1189
  {                             /* bfd_write_contents.  */
1190
    bfd_false,
1191
    bfd_true,
1192
    bfd_false,
1193
    bfd_false,
1194
  },
1195
 
1196
  BFD_JUMP_TABLE_GENERIC (bfd_pef_xlib),
1197
  BFD_JUMP_TABLE_COPY (_bfd_generic),
1198
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
1199
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1200
  BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
1201
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1202
  BFD_JUMP_TABLE_WRITE (_bfd_nowrite),
1203
  BFD_JUMP_TABLE_LINK (_bfd_nolink),
1204
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1205
 
1206
  NULL,
1207
 
1208
  NULL
1209
};

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