aboutsummaryrefslogtreecommitdiffstats
path: root/gnu/usr.bin/gdb/bfd/libbfd.c
blob: 1bf8f7fb8e029f1d50fbf99e988dbd63f77c5daf (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
/* Assorted BFD support routines, only used internally.
   Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
   Written by Cygnus Support.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"

/*
SECTION
	libbfd

DESCRIPTION
	This file contains various routines which are used within BFD.
	They are not intended for export, but are documented here for
	completeness.
*/

boolean
DEFUN(_bfd_dummy_new_section_hook,(ignore, ignore_newsect),
      bfd *ignore AND
      asection *ignore_newsect)
{
  return true;
}

boolean
DEFUN(bfd_false ,(ignore),
      bfd *ignore)
{
  return false;
}

boolean
DEFUN(bfd_true,(ignore),
      bfd *ignore)
{
  return true;
}

PTR
DEFUN(bfd_nullvoidptr,(ignore),
      bfd *ignore)
{
  return (PTR)NULL;
}

int 
DEFUN(bfd_0,(ignore),
      bfd *ignore)
{
  return 0;
}

unsigned int 
DEFUN(bfd_0u,(ignore),
      bfd *ignore)
{
   return 0;
}

void 
DEFUN(bfd_void,(ignore),
      bfd *ignore)
{
}

boolean
DEFUN(_bfd_dummy_core_file_matches_executable_p,(ignore_core_bfd, ignore_exec_bfd),
      bfd *ignore_core_bfd AND
      bfd *ignore_exec_bfd)
{
  bfd_error = invalid_operation;
  return false;
}

/* of course you can't initialize a function to be the same as another, grr */

char *
DEFUN(_bfd_dummy_core_file_failing_command,(ignore_abfd),
      bfd *ignore_abfd)
{
  return (char *)NULL;
}

int
DEFUN(_bfd_dummy_core_file_failing_signal,(ignore_abfd),
     bfd *ignore_abfd)
{
  return 0;
}

bfd_target *
DEFUN(_bfd_dummy_target,(ignore_abfd),
     bfd *ignore_abfd)
{
  return 0;
}

/** zalloc -- allocate and clear storage */


#ifndef zalloc
char *
DEFUN(zalloc,(size),
      bfd_size_type size)
{
  char *ptr = (char *) malloc ((size_t)size);

  if ((ptr != NULL) && (size != 0))
   memset(ptr,0, (size_t) size);

  return ptr;
}
#endif

/*
INTERNAL_FUNCTION
	bfd_xmalloc

SYNOPSIS
	PTR  bfd_xmalloc( bfd_size_type size);

DESCRIPTION
	Like malloc, but exit if no more memory.

*/

/** There is major inconsistency in how running out of memory is handled.
  Some routines return a NULL, and set bfd_error to no_memory.
  However, obstack routines can't do this ... */


DEFUN(PTR bfd_xmalloc,(size),
      bfd_size_type size)
{
  static CONST char no_memory_message[] = "Virtual memory exhausted!\n";
  PTR ptr;
  if (size == 0) size = 1;
  ptr = (PTR)malloc((size_t) size);
  if (!ptr)
    {
      write (2, no_memory_message, sizeof(no_memory_message)-1);
      exit (-1);
    }
  return ptr;
}

/*
INTERNAL_FUNCTION
	bfd_xmalloc_by_size_t

SYNOPSIS
	PTR bfd_xmalloc_by_size_t ( size_t size);

DESCRIPTION
	Like malloc, but exit if no more memory.
	Uses size_t, so it's suitable for use as obstack_chunk_alloc.
 */
PTR
DEFUN(bfd_xmalloc_by_size_t, (size),
      size_t size)
{
  return bfd_xmalloc ((bfd_size_type) size);
}

/* Some IO code */


/* Note that archive entries don't have streams; they share their parent's.
   This allows someone to play with the iostream behind BFD's back.

   Also, note that the origin pointer points to the beginning of a file's
   contents (0 for non-archive elements).  For archive entries this is the
   first octet in the file, NOT the beginning of the archive header. */

static 
int DEFUN(real_read,(where, a,b, file),
          PTR where AND
          int a AND
          int b AND
          FILE *file)
{
  return fread(where, a,b,file);
}
bfd_size_type
DEFUN(bfd_read,(ptr, size, nitems, abfd),
      PTR ptr AND
      bfd_size_type size AND
      bfd_size_type nitems AND
      bfd *abfd)
{
  int nread;
  nread = real_read (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
#ifdef FILE_OFFSET_IS_CHAR_INDEX
  if (nread > 0)
    abfd->where += nread;
#endif
  return nread;
}

bfd_size_type
DEFUN(bfd_write,(ptr, size, nitems, abfd),
      CONST PTR ptr AND
      bfd_size_type size AND
      bfd_size_type nitems AND
      bfd *abfd)
{
  int nwrote = fwrite (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
#ifdef FILE_OFFSET_IS_CHAR_INDEX
  if (nwrote > 0)
    abfd->where += nwrote;
#endif
  return nwrote;
}

/*
INTERNAL_FUNCTION
	bfd_write_bigendian_4byte_int

SYNOPSIS
	void bfd_write_bigendian_4byte_int(bfd *abfd,  int i);

DESCRIPTION
	Writes a 4 byte integer to the outputing bfd, in big endian
	mode regardless of what else is going on.  This is useful in
	archives.

*/
void
DEFUN(bfd_write_bigendian_4byte_int,(abfd, i),
      bfd *abfd AND
      int i)
{
  bfd_byte buffer[4];
  bfd_putb32(i, buffer);
  bfd_write((PTR)buffer, 4, 1, abfd);
}

long
DEFUN(bfd_tell,(abfd),
      bfd *abfd)
{
  file_ptr ptr;

  ptr = ftell (bfd_cache_lookup(abfd));

  if (abfd->my_archive)
    ptr -= abfd->origin;
  abfd->where = ptr;
  return ptr;
}

int
DEFUN(bfd_flush,(abfd),
      bfd *abfd)
{
  return fflush (bfd_cache_lookup(abfd));
}

int
DEFUN(bfd_stat,(abfd, statbuf),
      bfd *abfd AND
      struct stat *statbuf)
{
  return fstat (fileno(bfd_cache_lookup(abfd)), statbuf);
}

int
DEFUN(bfd_seek,(abfd, position, direction),
      bfd * CONST abfd AND
      CONST file_ptr position AND
      CONST int direction)
{
  int result;
  FILE *f;
  file_ptr file_position;
  /* For the time being, a BFD may not seek to it's end.  The problem
     is that we don't easily have a way to recognize the end of an
     element in an archive. */

  BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR);

  if (direction == SEEK_CUR && position == 0)
    return 0;
#ifdef FILE_OFFSET_IS_CHAR_INDEX
  if (abfd->format != bfd_archive && abfd->my_archive == 0)
    {
#ifndef NDEBUG
      /* Explanation for this code: I'm only about 95+% sure that the above
	 conditions are sufficient and that all i/o calls are properly
	 adjusting the `where' field.  So this is sort of an `assert'
	 that the `where' field is correct.  If we can go a while without
	 tripping the abort, we can probably safely disable this code,
	 so that the real optimizations happen.  */
      file_ptr where_am_i_now;
      where_am_i_now = ftell (bfd_cache_lookup (abfd));
      if (abfd->my_archive)
	where_am_i_now -= abfd->origin;
      if (where_am_i_now != abfd->where)
	abort ();
#endif
      if (direction == SEEK_SET && position == abfd->where)
	return 0;
    }
  else
    {
      /* We need something smarter to optimize access to archives.
	 Currently, anything inside an archive is read via the file
	 handle for the archive.  Which means that a bfd_seek on one
	 component affects the `current position' in the archive, as
	 well as in any other component.

	 It might be sufficient to put a spike through the cache
	 abstraction, and look to the archive for the file position,
	 but I think we should try for something cleaner.

	 In the meantime, no optimization for archives.  */
    }
#endif

  f = bfd_cache_lookup (abfd);
  file_position = position;
  if (direction == SEEK_SET && abfd->my_archive != NULL)
    file_position += abfd->origin;

  result = fseek (f, file_position, direction);

  if (result != 0)
    /* Force redetermination of `where' field.  */
    bfd_tell (abfd);
  else
    {
#ifdef FILE_OFFSET_IS_CHAR_INDEX
      /* Adjust `where' field.  */
      if (direction == SEEK_SET)
	abfd->where = position;
      else
	abfd->where += position;
#endif
    }
  return result;
}

/** Make a string table */

/*>bfd.h<
 Add string to table pointed to by table, at location starting with free_ptr.
   resizes the table if necessary (if it's NULL, creates it, ignoring
   table_length).  Updates free_ptr, table, table_length */

boolean
DEFUN(bfd_add_to_string_table,(table, new_string, table_length, free_ptr),
      char **table AND
      char *new_string AND
      unsigned int *table_length AND
      char **free_ptr)
{
  size_t string_length = strlen (new_string) + 1; /* include null here */
  char *base = *table;
  size_t space_length = *table_length;
  unsigned int offset = (base ? *free_ptr - base : 0);

  if (base == NULL) {
    /* Avoid a useless regrow if we can (but of course we still
       take it next time */
    space_length = (string_length < DEFAULT_STRING_SPACE_SIZE ?
                    DEFAULT_STRING_SPACE_SIZE : string_length+1);
    base = zalloc ((bfd_size_type) space_length);

    if (base == NULL) {
      bfd_error = no_memory;
      return false;
    }
  }

  if ((size_t)(offset + string_length) >= space_length) {
    /* Make sure we will have enough space */
    while ((size_t)(offset + string_length) >= space_length) 
      space_length += space_length/2; /* grow by 50% */

    base = (char *) realloc (base, space_length);
    if (base == NULL) {
      bfd_error = no_memory;
      return false;
    }

  }

  memcpy (base + offset, new_string, string_length);
  *table = base;
  *table_length = space_length;
  *free_ptr = base + offset + string_length;
  
  return true;
}

/** The do-it-yourself (byte) sex-change kit */

/* The middle letter e.g. get<b>short indicates Big or Little endian
   target machine.  It doesn't matter what the byte order of the host
   machine is; these routines work for either.  */

/* FIXME: Should these take a count argument?
   Answer (gnu@cygnus.com):  No, but perhaps they should be inline
                             functions in swap.h #ifdef __GNUC__. 
                             Gprof them later and find out.  */

/*
FUNCTION
	bfd_put_size
FUNCTION
	bfd_get_size

DESCRIPTION
	These macros as used for reading and writing raw data in
	sections; each access (except for bytes) is vectored through
	the target format of the BFD and mangled accordingly. The
	mangling performs any necessary endian translations and
	removes alignment restrictions.  Note that types accepted and
	returned by these macros are identical so they can be swapped
	around in macros--for example libaout.h defines GET_WORD to
	either bfd_get_32 or bfd_get_64.

	In the put routines, val must be a bfd_vma.  If we are on a
	system without prototypes, the caller is responsible for making
	sure that is true, with a cast if necessary.  We don't cast
	them in the macro definitions because that would prevent lint
	or gcc -Wall from detecting sins such as passing a pointer.
	To detect calling these with less than a bfd_vma, use gcc
	-Wconversion on a host with 64 bit bfd_vma's.

.
.{* Byte swapping macros for user section data.  *}
.
.#define bfd_put_8(abfd, val, ptr) \
.                (*((unsigned char *)(ptr)) = (unsigned char)val)
.#define bfd_put_signed_8 \
.		bfd_put_8
.#define bfd_get_8(abfd, ptr) \
.                (*(unsigned char *)(ptr))
.#define bfd_get_signed_8(abfd, ptr) \
.		((*(unsigned char *)(ptr) ^ 0x80) - 0x80)
.
.#define bfd_put_16(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_putx16, ((val),(ptr)))
.#define bfd_put_signed_16 \
.		 bfd_put_16
.#define bfd_get_16(abfd, ptr) \
.                BFD_SEND(abfd, bfd_getx16, (ptr))
.#define bfd_get_signed_16(abfd, ptr) \
.         	 BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
.
.#define bfd_put_32(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_putx32, ((val),(ptr)))
.#define bfd_put_signed_32 \
.		 bfd_put_32
.#define bfd_get_32(abfd, ptr) \
.                BFD_SEND(abfd, bfd_getx32, (ptr))
.#define bfd_get_signed_32(abfd, ptr) \
.		 BFD_SEND(abfd, bfd_getx_signed_32, (ptr))
.
.#define bfd_put_64(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_putx64, ((val), (ptr)))
.#define bfd_put_signed_64 \
.		 bfd_put_64
.#define bfd_get_64(abfd, ptr) \
.                BFD_SEND(abfd, bfd_getx64, (ptr))
.#define bfd_get_signed_64(abfd, ptr) \
.		 BFD_SEND(abfd, bfd_getx_signed_64, (ptr))
.
*/ 

/*
FUNCTION
	bfd_h_put_size
FUNCTION
	bfd_h_get_size

DESCRIPTION
	These macros have the same function as their <<bfd_get_x>>
	bretherin, except that they are used for removing information
	for the header records of object files. Believe it or not,
	some object files keep their header records in big endian
	order, and their data in little endian order.
.
.{* Byte swapping macros for file header data.  *}
.
.#define bfd_h_put_8(abfd, val, ptr) \
.		bfd_put_8 (abfd, val, ptr)
.#define bfd_h_put_signed_8(abfd, val, ptr) \
.		bfd_put_8 (abfd, val, ptr)
.#define bfd_h_get_8(abfd, ptr) \
.		bfd_get_8 (abfd, ptr)
.#define bfd_h_get_signed_8(abfd, ptr) \
.		bfd_get_signed_8 (abfd, ptr)
.
.#define bfd_h_put_16(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_h_putx16,(val,ptr))
.#define bfd_h_put_signed_16 \
.		 bfd_h_put_16
.#define bfd_h_get_16(abfd, ptr) \
.                BFD_SEND(abfd, bfd_h_getx16,(ptr))
.#define bfd_h_get_signed_16(abfd, ptr) \
.		 BFD_SEND(abfd, bfd_h_getx_signed_16, (ptr))
.
.#define bfd_h_put_32(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_h_putx32,(val,ptr))
.#define bfd_h_put_signed_32 \
.		 bfd_h_put_32
.#define bfd_h_get_32(abfd, ptr) \
.                BFD_SEND(abfd, bfd_h_getx32,(ptr))
.#define bfd_h_get_signed_32(abfd, ptr) \
.		 BFD_SEND(abfd, bfd_h_getx_signed_32, (ptr))
.
.#define bfd_h_put_64(abfd, val, ptr) \
.                BFD_SEND(abfd, bfd_h_putx64,(val, ptr))
.#define bfd_h_put_signed_64 \
.		 bfd_h_put_64
.#define bfd_h_get_64(abfd, ptr) \
.                BFD_SEND(abfd, bfd_h_getx64,(ptr))
.#define bfd_h_get_signed_64(abfd, ptr) \
.		 BFD_SEND(abfd, bfd_h_getx_signed_64, (ptr))
.
*/ 

/* Sign extension to bfd_signed_vma.  */
#define COERCE16(x) (((bfd_signed_vma) (x) ^ 0x8000) - 0x8000)
#define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000)
#define EIGHT_GAZILLION (((HOST_64_BIT)0x80000000) << 32)
#define COERCE64(x) \
  (((bfd_signed_vma) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION)

bfd_vma
DEFUN(bfd_getb16,(addr),
      register bfd_byte *addr)
{
        return (addr[0] << 8) | addr[1];
}

bfd_vma
DEFUN(bfd_getl16,(addr),
      register bfd_byte *addr)
{
        return (addr[1] << 8) | addr[0];
}

bfd_signed_vma
DEFUN(bfd_getb_signed_16,(addr),
      register bfd_byte *addr)
{
        return COERCE16((addr[0] << 8) | addr[1]);
}

bfd_signed_vma
DEFUN(bfd_getl_signed_16,(addr),
      register bfd_byte *addr)
{
        return COERCE16((addr[1] << 8) | addr[0]);
}

void
DEFUN(bfd_putb16,(data, addr),
      bfd_vma data AND
      register bfd_byte *addr)
{
        addr[0] = (bfd_byte)(data >> 8);
        addr[1] = (bfd_byte )data;
}

void
DEFUN(bfd_putl16,(data, addr),
      bfd_vma data AND              
      register bfd_byte *addr)
{
        addr[0] = (bfd_byte )data;
        addr[1] = (bfd_byte)(data >> 8);
}

bfd_vma
bfd_getb32 (addr)
     register bfd_byte *addr;
{
        return (((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
		| addr[2]) << 8 | addr[3];
}

bfd_vma
bfd_getl32 (addr)
        register bfd_byte *addr;
{
        return (((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
		| addr[1]) << 8 | addr[0];
}

bfd_signed_vma
bfd_getb_signed_32 (addr)
     register bfd_byte *addr;
{
        return COERCE32((((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
			 | addr[2]) << 8 | addr[3]);
}

bfd_signed_vma
bfd_getl_signed_32 (addr)
        register bfd_byte *addr;
{
        return COERCE32((((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
			 | addr[1]) << 8 | addr[0]);
}

bfd_vma
DEFUN(bfd_getb64,(addr),
      register bfd_byte *addr)
{
#ifdef BFD64
  bfd_vma low, high;

  high= ((((((((addr[0]) << 8) |
              addr[1]) << 8) |
            addr[2]) << 8) |
          addr[3]) );

  low = (((((((((bfd_vma)addr[4]) << 8) |
              addr[5]) << 8) |
            addr[6]) << 8) |
          addr[7]));

  return high << 32 | low;
#else
  BFD_FAIL();
  return 0;
#endif

}

bfd_vma
DEFUN(bfd_getl64,(addr),
      register bfd_byte *addr)
{

#ifdef BFD64
  bfd_vma low, high;
  high= (((((((addr[7] << 8) |
              addr[6]) << 8) |
            addr[5]) << 8) |
          addr[4]));

  low = ((((((((bfd_vma)addr[3] << 8) |
              addr[2]) << 8) |
            addr[1]) << 8) |
          addr[0]) );

  return high << 32 | low;
#else
  BFD_FAIL();
  return 0;
#endif

}

bfd_signed_vma
DEFUN(bfd_getb_signed_64,(addr),
      register bfd_byte *addr)
{
#ifdef BFD64
  bfd_vma low, high;

  high= ((((((((addr[0]) << 8) |
              addr[1]) << 8) |
            addr[2]) << 8) |
          addr[3]) );

  low = (((((((((bfd_vma)addr[4]) << 8) |
              addr[5]) << 8) |
            addr[6]) << 8) |
          addr[7]));

  return COERCE64(high << 32 | low);
#else
  BFD_FAIL();
  return 0;
#endif

}

bfd_signed_vma
DEFUN(bfd_getl_signed_64,(addr),
      register bfd_byte *addr)
{

#ifdef BFD64
  bfd_vma low, high;
  high= (((((((addr[7] << 8) |
              addr[6]) << 8) |
            addr[5]) << 8) |
          addr[4]));

  low = ((((((((bfd_vma)addr[3] << 8) |
              addr[2]) << 8) |
            addr[1]) << 8) |
          addr[0]) );

  return COERCE64(high << 32 | low);
#else
  BFD_FAIL();
  return 0;
#endif

}

void
DEFUN(bfd_putb32,(data, addr),
      bfd_vma data AND
      register bfd_byte *addr)
{
        addr[0] = (bfd_byte)(data >> 24);
        addr[1] = (bfd_byte)(data >> 16);
        addr[2] = (bfd_byte)(data >>  8);
        addr[3] = (bfd_byte)data;
}

void
DEFUN(bfd_putl32,(data, addr),
      bfd_vma data AND
      register bfd_byte *addr)
{
        addr[0] = (bfd_byte)data;
        addr[1] = (bfd_byte)(data >>  8);
        addr[2] = (bfd_byte)(data >> 16);
        addr[3] = (bfd_byte)(data >> 24);
}
void
DEFUN(bfd_putb64,(data, addr),
        bfd_vma data AND
        register bfd_byte *addr)
{
#ifdef BFD64
  addr[0] = (bfd_byte)(data >> (7*8));
  addr[1] = (bfd_byte)(data >> (6*8));
  addr[2] = (bfd_byte)(data >> (5*8));
  addr[3] = (bfd_byte)(data >> (4*8));
  addr[4] = (bfd_byte)(data >> (3*8));
  addr[5] = (bfd_byte)(data >> (2*8));
  addr[6] = (bfd_byte)(data >> (1*8));
  addr[7] = (bfd_byte)(data >> (0*8));
#else
  BFD_FAIL();
#endif

}

void
DEFUN(bfd_putl64,(data, addr),
      bfd_vma data AND
      register bfd_byte *addr)
{
#ifdef BFD64
  addr[7] = (bfd_byte)(data >> (7*8));
  addr[6] = (bfd_byte)(data >> (6*8));
  addr[5] = (bfd_byte)(data >> (5*8));
  addr[4] = (bfd_byte)(data >> (4*8));
  addr[3] = (bfd_byte)(data >> (3*8));
  addr[2] = (bfd_byte)(data >> (2*8));
  addr[1] = (bfd_byte)(data >> (1*8));
  addr[0] = (bfd_byte)(data >> (0*8));
#else
  BFD_FAIL();
#endif

}


/* Default implementation */

boolean
DEFUN(bfd_generic_get_section_contents, (abfd, section, location, offset, count),
      bfd *abfd AND
      sec_ptr section AND
      PTR location AND
      file_ptr offset AND
      bfd_size_type count)
{
    if (count == 0)
        return true;
    if ((bfd_size_type)(offset+count) > section->_raw_size
        || bfd_seek(abfd, (file_ptr)(section->filepos + offset), SEEK_SET) == -1
        || bfd_read(location, (bfd_size_type)1, count, abfd) != count)
        return (false); /* on error */
    return (true);
}

/* This generic function can only be used in implementations where creating
   NEW sections is disallowed.  It is useful in patching existing sections
   in read-write files, though.  See other set_section_contents functions
   to see why it doesn't work for new sections.  */
boolean
DEFUN(bfd_generic_set_section_contents, (abfd, section, location, offset, count),
      bfd *abfd AND
      sec_ptr section AND
      PTR location AND
      file_ptr offset AND
      bfd_size_type count)
{
    if (count == 0)
        return true;
    if ((bfd_size_type)(offset+count) > bfd_get_section_size_after_reloc(section)
        || bfd_seek(abfd, (file_ptr)(section->filepos + offset), SEEK_SET) == -1
        || bfd_write(location, (bfd_size_type)1, count, abfd) != count)
        return (false); /* on error */
    return (true);
}

/*
INTERNAL_FUNCTION
	bfd_log2

DESCRIPTION
	Return the log base 2 of the value supplied, rounded up. eg an
	arg of 1025 would return 11.

SYNOPSIS
	unsigned int bfd_log2(bfd_vma x);
*/

unsigned
bfd_log2(x)
     bfd_vma x;
{
  unsigned result = 0;
  while ( (bfd_vma)(1<< result) < x)
    result++;
  return result;
}