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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [bfd/] [libbfd.c] - Blame information for rev 840

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1 24 jeremybenn
/* Assorted BFD support routines, only used internally.
2
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3
   2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
4
   Free Software Foundation, Inc.
5
   Written by Cygnus Support.
6
 
7
   This file is part of BFD, the Binary File Descriptor library.
8
 
9
   This program is free software; you can redistribute it and/or modify
10
   it under the terms of the GNU General Public License as published by
11
   the Free Software Foundation; either version 3 of the License, or
12
   (at your option) any later version.
13
 
14
   This program is distributed in the hope that it will be useful,
15
   but WITHOUT ANY WARRANTY; without even the implied warranty of
16
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
   GNU General Public License for more details.
18
 
19
   You should have received a copy of the GNU General Public License
20
   along with this program; if not, write to the Free Software
21
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22
   MA 02110-1301, USA.  */
23
 
24
#include "sysdep.h"
25
#include "bfd.h"
26
#include "libbfd.h"
27
 
28
#ifndef HAVE_GETPAGESIZE
29
#define getpagesize() 2048
30
#endif
31
 
32
/*
33
SECTION
34
        Implementation details
35
 
36
SUBSECTION
37
        Internal functions
38
 
39
DESCRIPTION
40
        These routines are used within BFD.
41
        They are not intended for export, but are documented here for
42
        completeness.
43
*/
44
 
45
/* A routine which is used in target vectors for unsupported
46
   operations.  */
47
 
48
bfd_boolean
49
bfd_false (bfd *ignore ATTRIBUTE_UNUSED)
50
{
51
  bfd_set_error (bfd_error_invalid_operation);
52
  return FALSE;
53
}
54
 
55
/* A routine which is used in target vectors for supported operations
56
   which do not actually do anything.  */
57
 
58
bfd_boolean
59
bfd_true (bfd *ignore ATTRIBUTE_UNUSED)
60
{
61
  return TRUE;
62
}
63
 
64
/* A routine which is used in target vectors for unsupported
65
   operations which return a pointer value.  */
66
 
67
void *
68
bfd_nullvoidptr (bfd *ignore ATTRIBUTE_UNUSED)
69
{
70
  bfd_set_error (bfd_error_invalid_operation);
71
  return NULL;
72
}
73
 
74
int
75
bfd_0 (bfd *ignore ATTRIBUTE_UNUSED)
76
{
77
  return 0;
78
}
79
 
80
unsigned int
81
bfd_0u (bfd *ignore ATTRIBUTE_UNUSED)
82
{
83
   return 0;
84
}
85
 
86
long
87
bfd_0l (bfd *ignore ATTRIBUTE_UNUSED)
88
{
89
  return 0;
90
}
91
 
92
/* A routine which is used in target vectors for unsupported
93
   operations which return -1 on error.  */
94
 
95
long
96
_bfd_n1 (bfd *ignore_abfd ATTRIBUTE_UNUSED)
97
{
98
  bfd_set_error (bfd_error_invalid_operation);
99
  return -1;
100
}
101
 
102
void
103
bfd_void (bfd *ignore ATTRIBUTE_UNUSED)
104
{
105
}
106
 
107
long
108
_bfd_norelocs_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
109
                                     asection *sec ATTRIBUTE_UNUSED)
110
{
111
  return sizeof (arelent *);
112
}
113
 
114
long
115
_bfd_norelocs_canonicalize_reloc (bfd *abfd ATTRIBUTE_UNUSED,
116
                                  asection *sec ATTRIBUTE_UNUSED,
117
                                  arelent **relptr,
118
                                  asymbol **symbols ATTRIBUTE_UNUSED)
119
{
120
  *relptr = NULL;
121
  return 0;
122
}
123
 
124
bfd_boolean
125
_bfd_nocore_core_file_matches_executable_p
126
  (bfd *ignore_core_bfd ATTRIBUTE_UNUSED,
127
   bfd *ignore_exec_bfd ATTRIBUTE_UNUSED)
128
{
129
  bfd_set_error (bfd_error_invalid_operation);
130
  return FALSE;
131
}
132
 
133
/* Routine to handle core_file_failing_command entry point for targets
134
   without core file support.  */
135
 
136
char *
137
_bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED)
138
{
139
  bfd_set_error (bfd_error_invalid_operation);
140
  return NULL;
141
}
142
 
143
/* Routine to handle core_file_failing_signal entry point for targets
144
   without core file support.  */
145
 
146
int
147
_bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED)
148
{
149
  bfd_set_error (bfd_error_invalid_operation);
150
  return 0;
151
}
152
 
153
const bfd_target *
154
_bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED)
155
{
156
  bfd_set_error (bfd_error_wrong_format);
157
  return 0;
158
}
159
 
160
/* Allocate memory using malloc.  */
161
 
162
void *
163
bfd_malloc (bfd_size_type size)
164
{
165
  void *ptr;
166
 
167
  if (size != (size_t) size)
168
    {
169
      bfd_set_error (bfd_error_no_memory);
170
      return NULL;
171
    }
172
 
173
  ptr = malloc ((size_t) size);
174
  if (ptr == NULL && (size_t) size != 0)
175
    bfd_set_error (bfd_error_no_memory);
176
 
177
  return ptr;
178
}
179
 
180
/* Allocate memory using malloc, nmemb * size with overflow checking.  */
181
 
182
void *
183
bfd_malloc2 (bfd_size_type nmemb, bfd_size_type size)
184
{
185
  void *ptr;
186
 
187
  if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
188
      && size != 0
189
      && nmemb > ~(bfd_size_type) 0 / size)
190
    {
191
      bfd_set_error (bfd_error_no_memory);
192
      return NULL;
193
    }
194
 
195
  size *= nmemb;
196
 
197
  if (size != (size_t) size)
198
    {
199
      bfd_set_error (bfd_error_no_memory);
200
      return NULL;
201
    }
202
 
203
  ptr = malloc ((size_t) size);
204
  if (ptr == NULL && (size_t) size != 0)
205
    bfd_set_error (bfd_error_no_memory);
206
 
207
  return ptr;
208
}
209
 
210
/* Reallocate memory using realloc.  */
211
 
212
void *
213
bfd_realloc (void *ptr, bfd_size_type size)
214
{
215
  void *ret;
216
 
217
  if (size != (size_t) size)
218
    {
219
      bfd_set_error (bfd_error_no_memory);
220
      return NULL;
221
    }
222
 
223
  if (ptr == NULL)
224
    ret = malloc ((size_t) size);
225
  else
226
    ret = realloc (ptr, (size_t) size);
227
 
228
  if (ret == NULL && (size_t) size != 0)
229
    bfd_set_error (bfd_error_no_memory);
230
 
231
  return ret;
232
}
233
 
234
/* Reallocate memory using realloc, nmemb * size with overflow checking.  */
235
 
236
void *
237
bfd_realloc2 (void *ptr, bfd_size_type nmemb, bfd_size_type size)
238
{
239
  void *ret;
240
 
241
  if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
242
      && size != 0
243
      && nmemb > ~(bfd_size_type) 0 / size)
244
    {
245
      bfd_set_error (bfd_error_no_memory);
246
      return NULL;
247
    }
248
 
249
  size *= nmemb;
250
 
251
  if (size != (size_t) size)
252
    {
253
      bfd_set_error (bfd_error_no_memory);
254
      return NULL;
255
    }
256
 
257
  if (ptr == NULL)
258
    ret = malloc ((size_t) size);
259
  else
260
    ret = realloc (ptr, (size_t) size);
261
 
262
  if (ret == NULL && (size_t) size != 0)
263
    bfd_set_error (bfd_error_no_memory);
264
 
265
  return ret;
266
}
267
 
268
/* Reallocate memory using realloc.
269
   If this fails the pointer is freed before returning.  */
270
 
271
void *
272
bfd_realloc_or_free (void *ptr, bfd_size_type size)
273
{
274
  size_t amount = (size_t) size;
275
  void *ret;
276
 
277
  if (size != amount)
278
    ret = NULL;
279
  else if (ptr == NULL)
280
    ret = malloc (amount);
281
  else
282
    ret = realloc (ptr, amount);
283
 
284
  if (ret == NULL)
285
    {
286
      if (amount > 0)
287
        bfd_set_error (bfd_error_no_memory);
288
 
289
      if (ptr != NULL)
290
        free (ptr);
291
    }
292
 
293
  return ret;
294
}
295
 
296
/* Allocate memory using malloc and clear it.  */
297
 
298
void *
299
bfd_zmalloc (bfd_size_type size)
300
{
301
  void *ptr;
302
 
303
  if (size != (size_t) size)
304
    {
305
      bfd_set_error (bfd_error_no_memory);
306
      return NULL;
307
    }
308
 
309
  ptr = malloc ((size_t) size);
310
 
311
  if ((size_t) size != 0)
312
    {
313
      if (ptr == NULL)
314
        bfd_set_error (bfd_error_no_memory);
315
      else
316
        memset (ptr, 0, (size_t) size);
317
    }
318
 
319
  return ptr;
320
}
321
 
322
/* Allocate memory using malloc (nmemb * size) with overflow checking
323
   and clear it.  */
324
 
325
void *
326
bfd_zmalloc2 (bfd_size_type nmemb, bfd_size_type size)
327
{
328
  void *ptr;
329
 
330
  if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
331
      && size != 0
332
      && nmemb > ~(bfd_size_type) 0 / size)
333
    {
334
      bfd_set_error (bfd_error_no_memory);
335
      return NULL;
336
    }
337
 
338
  size *= nmemb;
339
 
340
  if (size != (size_t) size)
341
    {
342
      bfd_set_error (bfd_error_no_memory);
343
      return NULL;
344
    }
345
 
346
  ptr = malloc ((size_t) size);
347
 
348
  if ((size_t) size != 0)
349
    {
350
      if (ptr == NULL)
351
        bfd_set_error (bfd_error_no_memory);
352
      else
353
        memset (ptr, 0, (size_t) size);
354
    }
355
 
356
  return ptr;
357
}
358
 
359
/*
360
INTERNAL_FUNCTION
361
        bfd_write_bigendian_4byte_int
362
 
363
SYNOPSIS
364
        bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);
365
 
366
DESCRIPTION
367
        Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big
368
        endian order regardless of what else is going on.  This is useful in
369
        archives.
370
 
371
*/
372
bfd_boolean
373
bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i)
374
{
375
  bfd_byte buffer[4];
376
  bfd_putb32 ((bfd_vma) i, buffer);
377
  return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4;
378
}
379
 
380
 
381
/** The do-it-yourself (byte) sex-change kit */
382
 
383
/* The middle letter e.g. get<b>short indicates Big or Little endian
384
   target machine.  It doesn't matter what the byte order of the host
385
   machine is; these routines work for either.  */
386
 
387
/* FIXME: Should these take a count argument?
388
   Answer (gnu@cygnus.com):  No, but perhaps they should be inline
389
                             functions in swap.h #ifdef __GNUC__.
390
                             Gprof them later and find out.  */
391
 
392
/*
393
FUNCTION
394
        bfd_put_size
395
FUNCTION
396
        bfd_get_size
397
 
398
DESCRIPTION
399
        These macros as used for reading and writing raw data in
400
        sections; each access (except for bytes) is vectored through
401
        the target format of the BFD and mangled accordingly. The
402
        mangling performs any necessary endian translations and
403
        removes alignment restrictions.  Note that types accepted and
404
        returned by these macros are identical so they can be swapped
405
        around in macros---for example, @file{libaout.h} defines <<GET_WORD>>
406
        to either <<bfd_get_32>> or <<bfd_get_64>>.
407
 
408
        In the put routines, @var{val} must be a <<bfd_vma>>.  If we are on a
409
        system without prototypes, the caller is responsible for making
410
        sure that is true, with a cast if necessary.  We don't cast
411
        them in the macro definitions because that would prevent <<lint>>
412
        or <<gcc -Wall>> from detecting sins such as passing a pointer.
413
        To detect calling these with less than a <<bfd_vma>>, use
414
        <<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s.
415
 
416
.
417
.{* Byte swapping macros for user section data.  *}
418
.
419
.#define bfd_put_8(abfd, val, ptr) \
420
.  ((void) (*((unsigned char *) (ptr)) = (val) & 0xff))
421
.#define bfd_put_signed_8 \
422
.  bfd_put_8
423
.#define bfd_get_8(abfd, ptr) \
424
.  (*(unsigned char *) (ptr) & 0xff)
425
.#define bfd_get_signed_8(abfd, ptr) \
426
.  (((*(unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80)
427
.
428
.#define bfd_put_16(abfd, val, ptr) \
429
.  BFD_SEND (abfd, bfd_putx16, ((val),(ptr)))
430
.#define bfd_put_signed_16 \
431
.  bfd_put_16
432
.#define bfd_get_16(abfd, ptr) \
433
.  BFD_SEND (abfd, bfd_getx16, (ptr))
434
.#define bfd_get_signed_16(abfd, ptr) \
435
.  BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
436
.
437
.#define bfd_put_32(abfd, val, ptr) \
438
.  BFD_SEND (abfd, bfd_putx32, ((val),(ptr)))
439
.#define bfd_put_signed_32 \
440
.  bfd_put_32
441
.#define bfd_get_32(abfd, ptr) \
442
.  BFD_SEND (abfd, bfd_getx32, (ptr))
443
.#define bfd_get_signed_32(abfd, ptr) \
444
.  BFD_SEND (abfd, bfd_getx_signed_32, (ptr))
445
.
446
.#define bfd_put_64(abfd, val, ptr) \
447
.  BFD_SEND (abfd, bfd_putx64, ((val), (ptr)))
448
.#define bfd_put_signed_64 \
449
.  bfd_put_64
450
.#define bfd_get_64(abfd, ptr) \
451
.  BFD_SEND (abfd, bfd_getx64, (ptr))
452
.#define bfd_get_signed_64(abfd, ptr) \
453
.  BFD_SEND (abfd, bfd_getx_signed_64, (ptr))
454
.
455
.#define bfd_get(bits, abfd, ptr)                       \
456
.  ((bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr)       \
457
.   : (bits) == 16 ? bfd_get_16 (abfd, ptr)             \
458
.   : (bits) == 32 ? bfd_get_32 (abfd, ptr)             \
459
.   : (bits) == 64 ? bfd_get_64 (abfd, ptr)             \
460
.   : (abort (), (bfd_vma) - 1))
461
.
462
.#define bfd_put(bits, abfd, val, ptr)                  \
463
.  ((bits) == 8 ? bfd_put_8  (abfd, val, ptr)           \
464
.   : (bits) == 16 ? bfd_put_16 (abfd, val, ptr)                \
465
.   : (bits) == 32 ? bfd_put_32 (abfd, val, ptr)                \
466
.   : (bits) == 64 ? bfd_put_64 (abfd, val, ptr)                \
467
.   : (abort (), (void) 0))
468
.
469
*/
470
 
471
/*
472
FUNCTION
473
        bfd_h_put_size
474
        bfd_h_get_size
475
 
476
DESCRIPTION
477
        These macros have the same function as their <<bfd_get_x>>
478
        brethren, except that they are used for removing information
479
        for the header records of object files. Believe it or not,
480
        some object files keep their header records in big endian
481
        order and their data in little endian order.
482
.
483
.{* Byte swapping macros for file header data.  *}
484
.
485
.#define bfd_h_put_8(abfd, val, ptr) \
486
.  bfd_put_8 (abfd, val, ptr)
487
.#define bfd_h_put_signed_8(abfd, val, ptr) \
488
.  bfd_put_8 (abfd, val, ptr)
489
.#define bfd_h_get_8(abfd, ptr) \
490
.  bfd_get_8 (abfd, ptr)
491
.#define bfd_h_get_signed_8(abfd, ptr) \
492
.  bfd_get_signed_8 (abfd, ptr)
493
.
494
.#define bfd_h_put_16(abfd, val, ptr) \
495
.  BFD_SEND (abfd, bfd_h_putx16, (val, ptr))
496
.#define bfd_h_put_signed_16 \
497
.  bfd_h_put_16
498
.#define bfd_h_get_16(abfd, ptr) \
499
.  BFD_SEND (abfd, bfd_h_getx16, (ptr))
500
.#define bfd_h_get_signed_16(abfd, ptr) \
501
.  BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr))
502
.
503
.#define bfd_h_put_32(abfd, val, ptr) \
504
.  BFD_SEND (abfd, bfd_h_putx32, (val, ptr))
505
.#define bfd_h_put_signed_32 \
506
.  bfd_h_put_32
507
.#define bfd_h_get_32(abfd, ptr) \
508
.  BFD_SEND (abfd, bfd_h_getx32, (ptr))
509
.#define bfd_h_get_signed_32(abfd, ptr) \
510
.  BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr))
511
.
512
.#define bfd_h_put_64(abfd, val, ptr) \
513
.  BFD_SEND (abfd, bfd_h_putx64, (val, ptr))
514
.#define bfd_h_put_signed_64 \
515
.  bfd_h_put_64
516
.#define bfd_h_get_64(abfd, ptr) \
517
.  BFD_SEND (abfd, bfd_h_getx64, (ptr))
518
.#define bfd_h_get_signed_64(abfd, ptr) \
519
.  BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr))
520
.
521
.{* Aliases for the above, which should eventually go away.  *}
522
.
523
.#define H_PUT_64  bfd_h_put_64
524
.#define H_PUT_32  bfd_h_put_32
525
.#define H_PUT_16  bfd_h_put_16
526
.#define H_PUT_8   bfd_h_put_8
527
.#define H_PUT_S64 bfd_h_put_signed_64
528
.#define H_PUT_S32 bfd_h_put_signed_32
529
.#define H_PUT_S16 bfd_h_put_signed_16
530
.#define H_PUT_S8  bfd_h_put_signed_8
531
.#define H_GET_64  bfd_h_get_64
532
.#define H_GET_32  bfd_h_get_32
533
.#define H_GET_16  bfd_h_get_16
534
.#define H_GET_8   bfd_h_get_8
535
.#define H_GET_S64 bfd_h_get_signed_64
536
.#define H_GET_S32 bfd_h_get_signed_32
537
.#define H_GET_S16 bfd_h_get_signed_16
538
.#define H_GET_S8  bfd_h_get_signed_8
539
.
540
.*/
541
 
542
/* Sign extension to bfd_signed_vma.  */
543
#define COERCE16(x) (((bfd_signed_vma) (x) ^ 0x8000) - 0x8000)
544
#define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000)
545
#define EIGHT_GAZILLION ((bfd_int64_t) 1 << 63)
546
#define COERCE64(x) \
547
  (((bfd_int64_t) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION)
548
 
549
bfd_vma
550
bfd_getb16 (const void *p)
551
{
552 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
553 24 jeremybenn
  return (addr[0] << 8) | addr[1];
554
}
555
 
556
bfd_vma
557
bfd_getl16 (const void *p)
558
{
559 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
560 24 jeremybenn
  return (addr[1] << 8) | addr[0];
561
}
562
 
563
bfd_signed_vma
564
bfd_getb_signed_16 (const void *p)
565
{
566 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
567 24 jeremybenn
  return COERCE16 ((addr[0] << 8) | addr[1]);
568
}
569
 
570
bfd_signed_vma
571
bfd_getl_signed_16 (const void *p)
572
{
573 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
574 24 jeremybenn
  return COERCE16 ((addr[1] << 8) | addr[0]);
575
}
576
 
577
void
578
bfd_putb16 (bfd_vma data, void *p)
579
{
580 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
581 24 jeremybenn
  addr[0] = (data >> 8) & 0xff;
582
  addr[1] = data & 0xff;
583
}
584
 
585
void
586
bfd_putl16 (bfd_vma data, void *p)
587
{
588 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
589 24 jeremybenn
  addr[0] = data & 0xff;
590
  addr[1] = (data >> 8) & 0xff;
591
}
592
 
593
bfd_vma
594
bfd_getb32 (const void *p)
595
{
596 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
597 24 jeremybenn
  unsigned long v;
598
 
599
  v = (unsigned long) addr[0] << 24;
600
  v |= (unsigned long) addr[1] << 16;
601
  v |= (unsigned long) addr[2] << 8;
602
  v |= (unsigned long) addr[3];
603
  return v;
604
}
605
 
606
bfd_vma
607
bfd_getl32 (const void *p)
608
{
609 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
610 24 jeremybenn
  unsigned long v;
611
 
612
  v = (unsigned long) addr[0];
613
  v |= (unsigned long) addr[1] << 8;
614
  v |= (unsigned long) addr[2] << 16;
615
  v |= (unsigned long) addr[3] << 24;
616
  return v;
617
}
618
 
619
bfd_signed_vma
620
bfd_getb_signed_32 (const void *p)
621
{
622 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
623 24 jeremybenn
  unsigned long v;
624
 
625
  v = (unsigned long) addr[0] << 24;
626
  v |= (unsigned long) addr[1] << 16;
627
  v |= (unsigned long) addr[2] << 8;
628
  v |= (unsigned long) addr[3];
629
  return COERCE32 (v);
630
}
631
 
632
bfd_signed_vma
633
bfd_getl_signed_32 (const void *p)
634
{
635 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
636 24 jeremybenn
  unsigned long v;
637
 
638
  v = (unsigned long) addr[0];
639
  v |= (unsigned long) addr[1] << 8;
640
  v |= (unsigned long) addr[2] << 16;
641
  v |= (unsigned long) addr[3] << 24;
642
  return COERCE32 (v);
643
}
644
 
645
bfd_uint64_t
646
bfd_getb64 (const void *p ATTRIBUTE_UNUSED)
647
{
648
#ifdef BFD_HOST_64_BIT
649 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
650 24 jeremybenn
  bfd_uint64_t v;
651
 
652
  v  = addr[0]; v <<= 8;
653
  v |= addr[1]; v <<= 8;
654
  v |= addr[2]; v <<= 8;
655
  v |= addr[3]; v <<= 8;
656
  v |= addr[4]; v <<= 8;
657
  v |= addr[5]; v <<= 8;
658
  v |= addr[6]; v <<= 8;
659
  v |= addr[7];
660
 
661
  return v;
662
#else
663
  BFD_FAIL();
664
  return 0;
665
#endif
666
}
667
 
668
bfd_uint64_t
669
bfd_getl64 (const void *p ATTRIBUTE_UNUSED)
670
{
671
#ifdef BFD_HOST_64_BIT
672 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
673 24 jeremybenn
  bfd_uint64_t v;
674
 
675
  v  = addr[7]; v <<= 8;
676
  v |= addr[6]; v <<= 8;
677
  v |= addr[5]; v <<= 8;
678
  v |= addr[4]; v <<= 8;
679
  v |= addr[3]; v <<= 8;
680
  v |= addr[2]; v <<= 8;
681
  v |= addr[1]; v <<= 8;
682
  v |= addr[0];
683
 
684
  return v;
685
#else
686
  BFD_FAIL();
687
  return 0;
688
#endif
689
 
690
}
691
 
692
bfd_int64_t
693
bfd_getb_signed_64 (const void *p ATTRIBUTE_UNUSED)
694
{
695
#ifdef BFD_HOST_64_BIT
696 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
697 24 jeremybenn
  bfd_uint64_t v;
698
 
699
  v  = addr[0]; v <<= 8;
700
  v |= addr[1]; v <<= 8;
701
  v |= addr[2]; v <<= 8;
702
  v |= addr[3]; v <<= 8;
703
  v |= addr[4]; v <<= 8;
704
  v |= addr[5]; v <<= 8;
705
  v |= addr[6]; v <<= 8;
706
  v |= addr[7];
707
 
708
  return COERCE64 (v);
709
#else
710
  BFD_FAIL();
711
  return 0;
712
#endif
713
}
714
 
715
bfd_int64_t
716
bfd_getl_signed_64 (const void *p ATTRIBUTE_UNUSED)
717
{
718
#ifdef BFD_HOST_64_BIT
719 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
720 24 jeremybenn
  bfd_uint64_t v;
721
 
722
  v  = addr[7]; v <<= 8;
723
  v |= addr[6]; v <<= 8;
724
  v |= addr[5]; v <<= 8;
725
  v |= addr[4]; v <<= 8;
726
  v |= addr[3]; v <<= 8;
727
  v |= addr[2]; v <<= 8;
728
  v |= addr[1]; v <<= 8;
729
  v |= addr[0];
730
 
731
  return COERCE64 (v);
732
#else
733
  BFD_FAIL();
734
  return 0;
735
#endif
736
}
737
 
738
void
739
bfd_putb32 (bfd_vma data, void *p)
740
{
741 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
742 24 jeremybenn
  addr[0] = (data >> 24) & 0xff;
743
  addr[1] = (data >> 16) & 0xff;
744
  addr[2] = (data >>  8) & 0xff;
745
  addr[3] = data & 0xff;
746
}
747
 
748
void
749
bfd_putl32 (bfd_vma data, void *p)
750
{
751 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
752 24 jeremybenn
  addr[0] = data & 0xff;
753
  addr[1] = (data >>  8) & 0xff;
754
  addr[2] = (data >> 16) & 0xff;
755
  addr[3] = (data >> 24) & 0xff;
756
}
757
 
758
void
759
bfd_putb64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED)
760
{
761
#ifdef BFD_HOST_64_BIT
762 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
763 24 jeremybenn
  addr[0] = (data >> (7*8)) & 0xff;
764
  addr[1] = (data >> (6*8)) & 0xff;
765
  addr[2] = (data >> (5*8)) & 0xff;
766
  addr[3] = (data >> (4*8)) & 0xff;
767
  addr[4] = (data >> (3*8)) & 0xff;
768
  addr[5] = (data >> (2*8)) & 0xff;
769
  addr[6] = (data >> (1*8)) & 0xff;
770
  addr[7] = (data >> (0*8)) & 0xff;
771
#else
772
  BFD_FAIL();
773
#endif
774
}
775
 
776
void
777
bfd_putl64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED)
778
{
779
#ifdef BFD_HOST_64_BIT
780 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
781 24 jeremybenn
  addr[7] = (data >> (7*8)) & 0xff;
782
  addr[6] = (data >> (6*8)) & 0xff;
783
  addr[5] = (data >> (5*8)) & 0xff;
784
  addr[4] = (data >> (4*8)) & 0xff;
785
  addr[3] = (data >> (3*8)) & 0xff;
786
  addr[2] = (data >> (2*8)) & 0xff;
787
  addr[1] = (data >> (1*8)) & 0xff;
788
  addr[0] = (data >> (0*8)) & 0xff;
789
#else
790
  BFD_FAIL();
791
#endif
792
}
793
 
794
void
795
bfd_put_bits (bfd_uint64_t data, void *p, int bits, bfd_boolean big_p)
796
{
797 225 jeremybenn
  bfd_byte *addr = (bfd_byte *) p;
798 24 jeremybenn
  int i;
799
  int bytes;
800
 
801
  if (bits % 8 != 0)
802
    abort ();
803
 
804
  bytes = bits / 8;
805
  for (i = 0; i < bytes; i++)
806
    {
807
      int index = big_p ? bytes - i - 1 : i;
808
 
809
      addr[index] = data & 0xff;
810
      data >>= 8;
811
    }
812
}
813
 
814
bfd_uint64_t
815
bfd_get_bits (const void *p, int bits, bfd_boolean big_p)
816
{
817 225 jeremybenn
  const bfd_byte *addr = (const bfd_byte *) p;
818 24 jeremybenn
  bfd_uint64_t data;
819
  int i;
820
  int bytes;
821
 
822
  if (bits % 8 != 0)
823
    abort ();
824
 
825
  data = 0;
826
  bytes = bits / 8;
827
  for (i = 0; i < bytes; i++)
828
    {
829
      int index = big_p ? i : bytes - i - 1;
830
 
831
      data = (data << 8) | addr[index];
832
    }
833
 
834
  return data;
835
}
836
 
837
/* Default implementation */
838
 
839
bfd_boolean
840
_bfd_generic_get_section_contents (bfd *abfd,
841
                                   sec_ptr section,
842
                                   void *location,
843
                                   file_ptr offset,
844
                                   bfd_size_type count)
845
{
846
  bfd_size_type sz;
847
  if (count == 0)
848
    return TRUE;
849
 
850
  sz = section->rawsize ? section->rawsize : section->size;
851
  if (offset + count < count
852
      || offset + count > sz)
853
    {
854
      bfd_set_error (bfd_error_invalid_operation);
855
      return FALSE;
856
    }
857
 
858
  if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
859
      || bfd_bread (location, count, abfd) != count)
860
    return FALSE;
861
 
862
  return TRUE;
863
}
864
 
865
bfd_boolean
866
_bfd_generic_get_section_contents_in_window
867
  (bfd *abfd ATTRIBUTE_UNUSED,
868
   sec_ptr section ATTRIBUTE_UNUSED,
869
   bfd_window *w ATTRIBUTE_UNUSED,
870
   file_ptr offset ATTRIBUTE_UNUSED,
871
   bfd_size_type count ATTRIBUTE_UNUSED)
872
{
873
#ifdef USE_MMAP
874
  bfd_size_type sz;
875
 
876
  if (count == 0)
877
    return TRUE;
878
  if (abfd->xvec->_bfd_get_section_contents
879
      != _bfd_generic_get_section_contents)
880
    {
881
      /* We don't know what changes the bfd's get_section_contents
882
         method may have to make.  So punt trying to map the file
883
         window, and let get_section_contents do its thing.  */
884
      /* @@ FIXME : If the internal window has a refcount of 1 and was
885
         allocated with malloc instead of mmap, just reuse it.  */
886
      bfd_free_window (w);
887
      w->i = bfd_zmalloc (sizeof (bfd_window_internal));
888
      if (w->i == NULL)
889
        return FALSE;
890
      w->i->data = bfd_malloc (count);
891
      if (w->i->data == NULL)
892
        {
893
          free (w->i);
894
          w->i = NULL;
895
          return FALSE;
896
        }
897
      w->i->mapped = 0;
898
      w->i->refcount = 1;
899
      w->size = w->i->size = count;
900
      w->data = w->i->data;
901
      return bfd_get_section_contents (abfd, section, w->data, offset, count);
902
    }
903
  sz = section->rawsize ? section->rawsize : section->size;
904
  if (offset + count > sz
905
      || ! bfd_get_file_window (abfd, section->filepos + offset, count, w,
906
                                TRUE))
907
    return FALSE;
908
  return TRUE;
909
#else
910
  abort ();
911
#endif
912
}
913
 
914
/* This generic function can only be used in implementations where creating
915
   NEW sections is disallowed.  It is useful in patching existing sections
916
   in read-write files, though.  See other set_section_contents functions
917
   to see why it doesn't work for new sections.  */
918
bfd_boolean
919
_bfd_generic_set_section_contents (bfd *abfd,
920
                                   sec_ptr section,
921
                                   const void *location,
922
                                   file_ptr offset,
923
                                   bfd_size_type count)
924
{
925
  if (count == 0)
926
    return TRUE;
927
 
928
  if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
929
      || bfd_bwrite (location, count, abfd) != count)
930
    return FALSE;
931
 
932
  return TRUE;
933
}
934
 
935
/*
936
INTERNAL_FUNCTION
937
        bfd_log2
938
 
939
SYNOPSIS
940
        unsigned int bfd_log2 (bfd_vma x);
941
 
942
DESCRIPTION
943
        Return the log base 2 of the value supplied, rounded up.  E.g., an
944
        @var{x} of 1025 returns 11.  A @var{x} of 0 returns 0.
945
*/
946
 
947
unsigned int
948
bfd_log2 (bfd_vma x)
949
{
950
  unsigned int result = 0;
951
 
952
  while ((x = (x >> 1)) != 0)
953
    ++result;
954
  return result;
955
}
956
 
957
bfd_boolean
958
bfd_generic_is_local_label_name (bfd *abfd, const char *name)
959
{
960
  char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
961
 
962
  return name[0] == locals_prefix;
963
}
964
 
965
/*  Can be used from / for bfd_merge_private_bfd_data to check that
966
    endianness matches between input and output file.  Returns
967
    TRUE for a match, otherwise returns FALSE and emits an error.  */
968
bfd_boolean
969
_bfd_generic_verify_endian_match (bfd *ibfd, bfd *obfd)
970
{
971
  if (ibfd->xvec->byteorder != obfd->xvec->byteorder
972
      && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
973
      && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
974
    {
975
      const char *msg;
976
 
977
      if (bfd_big_endian (ibfd))
978
        msg = _("%B: compiled for a big endian system and target is little endian");
979
      else
980
        msg = _("%B: compiled for a little endian system and target is big endian");
981
 
982
      (*_bfd_error_handler) (msg, ibfd);
983
 
984
      bfd_set_error (bfd_error_wrong_format);
985
      return FALSE;
986
    }
987
 
988
  return TRUE;
989
}
990
 
991
/* Give a warning at runtime if someone compiles code which calls
992
   old routines.  */
993
 
994
void
995
warn_deprecated (const char *what,
996
                 const char *file,
997
                 int line,
998
                 const char *func)
999
{
1000
  /* Poor man's tracking of functions we've already warned about.  */
1001
  static size_t mask = 0;
1002
 
1003
  if (~(size_t) func & ~mask)
1004
    {
1005
      /* Note: separate sentences in order to allow
1006
         for translation into other languages.  */
1007
      if (func)
1008
        fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"),
1009
                 what, file, line, func);
1010
      else
1011
        fprintf (stderr, _("Deprecated %s called\n"), what);
1012
      mask |= ~(size_t) func;
1013
    }
1014
}
1015
 
1016
/* Helper function for reading uleb128 encoded data.  */
1017
 
1018
bfd_vma
1019
read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
1020
                      bfd_byte *buf,
1021
                      unsigned int *bytes_read_ptr)
1022
{
1023
  bfd_vma result;
1024
  unsigned int num_read;
1025
  unsigned int shift;
1026
  unsigned char byte;
1027
 
1028
  result = 0;
1029
  shift = 0;
1030
  num_read = 0;
1031
  do
1032
    {
1033
      byte = bfd_get_8 (abfd, buf);
1034
      buf++;
1035
      num_read++;
1036
      result |= (((bfd_vma) byte & 0x7f) << shift);
1037
      shift += 7;
1038
    }
1039
  while (byte & 0x80);
1040
  *bytes_read_ptr = num_read;
1041
  return result;
1042
}
1043
 
1044
/* Helper function for reading sleb128 encoded data.  */
1045
 
1046
bfd_signed_vma
1047
read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
1048
                    bfd_byte *buf,
1049
                    unsigned int *bytes_read_ptr)
1050
{
1051
  bfd_vma result;
1052
  unsigned int shift;
1053
  unsigned int num_read;
1054
  unsigned char byte;
1055
 
1056
  result = 0;
1057
  shift = 0;
1058
  num_read = 0;
1059
  do
1060
    {
1061
      byte = bfd_get_8 (abfd, buf);
1062
      buf ++;
1063
      num_read ++;
1064
      result |= (((bfd_vma) byte & 0x7f) << shift);
1065
      shift += 7;
1066
    }
1067
  while (byte & 0x80);
1068
  if (shift < 8 * sizeof (result) && (byte & 0x40))
1069
    result |= (((bfd_vma) -1) << shift);
1070
  *bytes_read_ptr = num_read;
1071
  return result;
1072
}
1073
 
1074
bfd_boolean
1075
_bfd_generic_find_line (bfd *abfd ATTRIBUTE_UNUSED,
1076
                       asymbol **symbols ATTRIBUTE_UNUSED,
1077
                       asymbol *symbol ATTRIBUTE_UNUSED,
1078
                       const char **filename_ptr ATTRIBUTE_UNUSED,
1079
                       unsigned int *linenumber_ptr ATTRIBUTE_UNUSED)
1080
{
1081
  return FALSE;
1082
}
1083
 
1084
bfd_boolean
1085
_bfd_generic_init_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
1086
                                        asection *isec ATTRIBUTE_UNUSED,
1087
                                        bfd *obfd ATTRIBUTE_UNUSED,
1088
                                        asection *osec ATTRIBUTE_UNUSED,
1089
                                        struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
1090
{
1091
  return TRUE;
1092
}

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