Coverage Report

Created: 2026-04-04 08:16

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/binutils-gdb/bfd/ihex.c
Line
Count
Source
1
/* BFD back-end for Intel Hex objects.
2
   Copyright (C) 1995-2026 Free Software Foundation, Inc.
3
   Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>.
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
23
/* This is what Intel Hex files look like:
24
25
1. INTEL FORMATS
26
27
A. Intel 1
28
29
   16-bit address-field format, for files 64k bytes in length or less.
30
31
   DATA RECORD
32
   Byte 1 Header = colon(:)
33
   2..3   The number of data bytes in hex notation
34
   4..5   High byte of the record load address
35
   6..7   Low byte of the record load address
36
   8..9   Record type, must be "00"
37
   10..x  Data bytes in hex notation:
38
  x = (number of bytes - 1) * 2 + 11
39
   x+1..x+2 Checksum in hex notation
40
   x+3..x+4 Carriage return, line feed
41
42
   END RECORD
43
   Byte 1 Header = colon (:)
44
   2..3   The byte count, must be "00"
45
   4..7   Transfer-address (usually "0000")
46
    the jump-to address, execution start address
47
   8..9   Record type, must be "01"
48
   10..11 Checksum, in hex notation
49
   12..13 Carriage return, line feed
50
51
B. INTEL 2
52
53
   MCS-86 format, using a 20-bit address for files larger than 64K bytes.
54
55
   DATA RECORD
56
   Byte 1 Header = colon (:)
57
   2..3   The byte count of this record, hex notation
58
   4..5   High byte of the record load address
59
   6..7   Low byte of the record load address
60
   8..9   Record type, must be "00"
61
   10..x  The data bytes in hex notation:
62
  x = (number of data bytes - 1) * 2 + 11
63
   x+1..x+2 Checksum in hex notation
64
   x+3..x+4 Carriage return, line feed
65
66
   EXTENDED ADDRESS RECORD
67
   Byte 1 Header = colon(:)
68
   2..3   The byte count, must be "02"
69
   4..7   Load address, must be "0000"
70
   8..9   Record type, must be "02"
71
   10..11 High byte of the offset address
72
   12..13 Low byte of the offset address
73
   14..15 Checksum in hex notation
74
   16..17 Carriage return, line feed
75
76
   The checksums are the two's complement of the 8-bit sum
77
   without carry of the byte count, offset address, and the
78
   record type.
79
80
   START ADDRESS RECORD
81
   Byte 1 Header = colon (:)
82
   2..3   The byte count, must be "04"
83
   4..7   Load address, must be "0000"
84
   8..9   Record type, must be "03"
85
   10..13 8086 CS value
86
   14..17 8086 IP value
87
   18..19 Checksum in hex notation
88
   20..21 Carriage return, line feed
89
90
Another document reports these additional types:
91
92
   EXTENDED LINEAR ADDRESS RECORD
93
   Byte 1 Header = colon (:)
94
   2..3   The byte count, must be "02"
95
   4..7   Load address, must be "0000"
96
   8..9   Record type, must be "04"
97
   10..13 Upper 16 bits of address of subsequent records
98
   14..15 Checksum in hex notation
99
   16..17 Carriage return, line feed
100
101
   START LINEAR ADDRESS RECORD
102
   Byte 1 Header = colon (:)
103
   2..3   The byte count, must be "02"
104
   4..7   Load address, must be "0000"
105
   8..9   Record type, must be "05"
106
   10..13 Upper 16 bits of start address
107
   14..15 Checksum in hex notation
108
   16..17 Carriage return, line feed
109
110
The MRI compiler uses this, which is a repeat of type 5:
111
112
  EXTENDED START RECORD
113
   Byte 1 Header = colon (:)
114
   2..3   The byte count, must be "04"
115
   4..7   Load address, must be "0000"
116
   8..9   Record type, must be "05"
117
   10..13 Upper 16 bits of start address
118
   14..17 Lower 16 bits of start address
119
   18..19 Checksum in hex notation
120
   20..21 Carriage return, line feed.  */
121
122
#include "sysdep.h"
123
#include "bfd.h"
124
#include "libbfd.h"
125
#include "libiberty.h"
126
#include "safe-ctype.h"
127
128
/* The number of bytes we put on one line during output.  */
129
130
0
#define CHUNK 16
131
132
/* Macros for converting between hex and binary.  */
133
134
9.48k
#define NIBBLE(x)    (hex_value (x))
135
5.43k
#define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
136
838
#define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
137
8.03k
#define ISHEX(x)     (hex_p (x))
138
139
/* When we write out an ihex value, the values can not be output as
140
   they are seen.  Instead, we hold them in memory in this structure.  */
141
142
struct ihex_data_list
143
{
144
  struct ihex_data_list *next;
145
  bfd_byte *data;
146
  bfd_vma where;
147
  bfd_size_type size;
148
};
149
150
/* The ihex tdata information.  */
151
152
struct ihex_data_struct
153
{
154
  struct ihex_data_list *head;
155
  struct ihex_data_list *tail;
156
};
157
158
/* Initialize by filling in the hex conversion array.  */
159
160
static void
161
ihex_init (void)
162
73.4k
{
163
73.4k
  static bool inited;
164
165
73.4k
  if (! inited)
166
9
    {
167
9
      inited = true;
168
9
      hex_init ();
169
9
    }
170
73.4k
}
171
172
/* Create an ihex object.  */
173
174
static bool
175
ihex_mkobject (bfd *abfd)
176
13
{
177
13
  struct ihex_data_struct *tdata;
178
179
13
  tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata));
180
13
  if (tdata == NULL)
181
0
    return false;
182
183
13
  abfd->tdata.ihex_data = tdata;
184
13
  tdata->head = NULL;
185
13
  tdata->tail = NULL;
186
13
  return true;
187
13
}
188
189
/* Read a byte from a BFD.  Set *ERRORPTR if an error occurred.
190
   Return EOF on error or end of file.  */
191
192
static inline int
193
ihex_get_byte (bfd *abfd, bool *errorptr)
194
1.16k
{
195
1.16k
  bfd_byte c;
196
197
1.16k
  if (bfd_read (&c, 1, abfd) != 1)
198
2
    {
199
2
      if (bfd_get_error () != bfd_error_file_truncated)
200
0
  *errorptr = true;
201
2
      return EOF;
202
2
    }
203
204
1.16k
  return c & 0xff;
205
1.16k
}
206
207
/* Report a problem in an Intel Hex file.  */
208
209
static void
210
ihex_bad_byte (bfd *abfd, unsigned int lineno, int c, bool error)
211
6
{
212
6
  if (c == EOF)
213
0
    {
214
0
      if (! error)
215
0
  bfd_set_error (bfd_error_file_truncated);
216
0
    }
217
6
  else
218
6
    {
219
6
      char buf[10];
220
221
6
      if (! ISPRINT (c))
222
4
  sprintf (buf, "\\%03o", (unsigned int) c & 0xff);
223
2
      else
224
2
  {
225
2
    buf[0] = c;
226
2
    buf[1] = '\0';
227
2
  }
228
6
      _bfd_error_handler
229
  /* xgettext:c-format */
230
6
  (_("%pB:%d: unexpected character `%s' in Intel Hex file"),
231
6
   abfd, lineno, buf);
232
6
      bfd_set_error (bfd_error_bad_value);
233
6
    }
234
6
}
235
236
/* Read an Intel hex file and turn it into sections.  We create a new
237
   section for each contiguous set of bytes.  */
238
239
static bool
240
ihex_scan (bfd *abfd)
241
13
{
242
13
  bfd_vma segbase;
243
13
  bfd_vma extbase;
244
13
  asection *sec;
245
13
  unsigned int lineno;
246
13
  bool error;
247
13
  bfd_byte *buf = NULL;
248
13
  size_t bufsize;
249
13
  int c;
250
251
13
  if (bfd_seek (abfd, 0, SEEK_SET) != 0)
252
0
    goto error_return;
253
254
13
  abfd->start_address = 0;
255
256
13
  segbase = 0;
257
13
  extbase = 0;
258
13
  sec = NULL;
259
13
  lineno = 1;
260
13
  error = false;
261
13
  bufsize = 0;
262
263
1.08k
  while ((c = ihex_get_byte (abfd, &error)) != EOF)
264
1.08k
    {
265
1.08k
      if (c == '\r')
266
1
  continue;
267
1.08k
      else if (c == '\n')
268
461
  {
269
461
    ++lineno;
270
461
    continue;
271
461
  }
272
620
      else if (c != ':')
273
1
  {
274
1
    ihex_bad_byte (abfd, lineno, c, error);
275
1
    goto error_return;
276
1
  }
277
619
      else
278
619
  {
279
619
    file_ptr pos;
280
619
    unsigned char hdr[8];
281
619
    unsigned int i;
282
619
    unsigned int len;
283
619
    bfd_vma addr;
284
619
    unsigned int type;
285
619
    unsigned int chars;
286
619
    unsigned int chksum;
287
288
    /* This is a data record.  */
289
619
    pos = bfd_tell (abfd) - 1;
290
291
    /* Read the header bytes.  */
292
619
    if (bfd_read (hdr, 8, abfd) != 8)
293
1
      goto error_return;
294
295
5.54k
    for (i = 0; i < 8; i++)
296
4.93k
      {
297
4.93k
        if (! ISHEX (hdr[i]))
298
4
    {
299
4
      ihex_bad_byte (abfd, lineno, hdr[i], error);
300
4
      goto error_return;
301
4
    }
302
4.93k
      }
303
304
614
    len = HEX2 (hdr);
305
614
    addr = HEX4 (hdr + 2);
306
614
    type = HEX2 (hdr + 6);
307
308
    /* Read the data bytes.  */
309
614
    chars = len * 2 + 2;
310
614
    if (chars >= bufsize)
311
392
      {
312
392
        buf = bfd_realloc (buf, chars);
313
392
        if (buf == NULL)
314
0
    goto error_return;
315
392
        bufsize = chars;
316
392
      }
317
318
614
    if (bfd_read (buf, chars, abfd) != chars)
319
0
      goto error_return;
320
321
3.60k
    for (i = 0; i < chars; i++)
322
2.99k
      {
323
2.99k
        if (! ISHEX (buf[i]))
324
1
    {
325
1
      ihex_bad_byte (abfd, lineno, buf[i], error);
326
1
      goto error_return;
327
1
    }
328
2.99k
      }
329
330
    /* Check the checksum.  */
331
613
    chksum = len + addr + (addr >> 8) + type;
332
1.49k
    for (i = 0; i < len; i++)
333
882
      chksum += HEX2 (buf + 2 * i);
334
613
    if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
335
3
      {
336
3
        _bfd_error_handler
337
    /* xgettext:c-format */
338
3
    (_("%pB:%u: bad checksum in Intel Hex file (expected %u, found %u)"),
339
3
     abfd, lineno,
340
3
     (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
341
3
        bfd_set_error (bfd_error_bad_value);
342
3
        goto error_return;
343
3
      }
344
345
610
    switch (type)
346
610
      {
347
497
      case 0:
348
        /* This is a data record.  */
349
497
        if (sec != NULL
350
426
      && sec->vma + sec->size == extbase + segbase + addr)
351
0
    {
352
      /* This data goes at the end of the section we are
353
         currently building.  */
354
0
      sec->size += len;
355
0
    }
356
497
        else if (len > 0)
357
211
    {
358
211
      char secbuf[20];
359
211
      char *secname;
360
211
      size_t amt;
361
211
      flagword flags;
362
363
211
      sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
364
211
      amt = strlen (secbuf) + 1;
365
211
      secname = (char *) bfd_alloc (abfd, amt);
366
211
      if (secname == NULL)
367
0
        goto error_return;
368
211
      strcpy (secname, secbuf);
369
211
      flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
370
211
      sec = bfd_make_section_with_flags (abfd, secname, flags);
371
211
      if (sec == NULL)
372
0
        goto error_return;
373
211
      sec->vma = extbase + segbase + addr;
374
211
      sec->lma = extbase + segbase + addr;
375
211
      sec->size = len;
376
211
      sec->filepos = pos;
377
211
    }
378
497
        break;
379
380
497
      case 1:
381
        /* An end record.  */
382
0
        if (abfd->start_address == 0)
383
0
    abfd->start_address = addr;
384
0
        free (buf);
385
0
        return true;
386
387
0
      case 2:
388
        /* An extended address record.  */
389
0
        if (len != 2)
390
0
    {
391
0
      _bfd_error_handler
392
        /* xgettext:c-format */
393
0
        (_("%pB:%u: bad extended address record length in Intel Hex file"),
394
0
         abfd, lineno);
395
0
      bfd_set_error (bfd_error_bad_value);
396
0
      goto error_return;
397
0
    }
398
399
0
        segbase = HEX4 (buf) << 4;
400
401
0
        sec = NULL;
402
403
0
        break;
404
405
79
      case 3:
406
        /* An extended start address record.  */
407
79
        if (len != 4)
408
0
    {
409
0
      _bfd_error_handler
410
        /* xgettext:c-format */
411
0
        (_("%pB:%u: bad extended start address length in Intel Hex file"),
412
0
         abfd, lineno);
413
0
      bfd_set_error (bfd_error_bad_value);
414
0
      goto error_return;
415
0
    }
416
417
79
        abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
418
419
79
        sec = NULL;
420
421
79
        break;
422
423
0
      case 4:
424
        /* An extended linear address record.  */
425
0
        if (len != 2)
426
0
    {
427
0
      _bfd_error_handler
428
        /* xgettext:c-format */
429
0
        (_("%pB:%u: bad extended linear address record length in Intel Hex file"),
430
0
         abfd, lineno);
431
0
      bfd_set_error (bfd_error_bad_value);
432
0
      goto error_return;
433
0
    }
434
435
0
        extbase = HEX4 (buf) << 16;
436
437
0
        sec = NULL;
438
439
0
        break;
440
441
33
      case 5:
442
        /* An extended linear start address record.  */
443
33
        if (len != 2 && len != 4)
444
0
    {
445
0
      _bfd_error_handler
446
        /* xgettext:c-format */
447
0
        (_("%pB:%u: bad extended linear start address length in Intel Hex file"),
448
0
         abfd, lineno);
449
0
      bfd_set_error (bfd_error_bad_value);
450
0
      goto error_return;
451
0
    }
452
453
33
        if (len == 2)
454
0
    abfd->start_address += HEX4 (buf) << 16;
455
33
        else
456
33
    abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
457
458
33
        sec = NULL;
459
460
33
        break;
461
462
1
      default:
463
1
        _bfd_error_handler
464
    /* xgettext:c-format */
465
1
    (_("%pB:%u: unrecognized ihex type %u in Intel Hex file"),
466
1
     abfd, lineno, type);
467
1
        bfd_set_error (bfd_error_bad_value);
468
1
        goto error_return;
469
610
      }
470
610
  }
471
1.08k
    }
472
473
2
  if (error)
474
0
    goto error_return;
475
476
2
  free (buf);
477
2
  return true;
478
479
11
 error_return:
480
11
  free (buf);
481
11
  return false;
482
2
}
483
484
/* Try to recognize an Intel Hex file.  */
485
486
static bfd_cleanup
487
ihex_object_p (bfd *abfd)
488
73.4k
{
489
73.4k
  bfd_byte b[9];
490
73.4k
  unsigned int i;
491
73.4k
  unsigned int type;
492
493
73.4k
  ihex_init ();
494
495
73.4k
  if (bfd_seek (abfd, 0, SEEK_SET) != 0)
496
0
    return NULL;
497
73.4k
  if (bfd_read (b, 9, abfd) != 9)
498
165
    {
499
165
      if (bfd_get_error () == bfd_error_file_truncated)
500
91
  bfd_set_error (bfd_error_wrong_format);
501
165
      return NULL;
502
165
    }
503
504
73.2k
  if (b[0] != ':')
505
73.2k
    {
506
73.2k
      bfd_set_error (bfd_error_wrong_format);
507
73.2k
      return NULL;
508
73.2k
    }
509
510
117
  for (i = 1; i < 9; i++)
511
104
    {
512
104
      if (! ISHEX (b[i]))
513
0
  {
514
0
    bfd_set_error (bfd_error_wrong_format);
515
0
    return NULL;
516
0
  }
517
104
    }
518
519
13
  type = HEX2 (b + 7);
520
13
  if (type > 5)
521
0
    {
522
0
      bfd_set_error (bfd_error_wrong_format);
523
0
      return NULL;
524
0
    }
525
526
  /* OK, it looks like it really is an Intel Hex file.  */
527
13
  if (!ihex_mkobject (abfd))
528
0
    return NULL;
529
530
13
  if (!ihex_scan (abfd))
531
11
    {
532
11
      bfd_release (abfd, abfd->tdata.any);
533
11
      return NULL;
534
11
    }
535
536
2
  return _bfd_no_cleanup;
537
13
}
538
539
/* Read the contents of a section in an Intel Hex file.  */
540
541
static bool
542
ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents)
543
82
{
544
82
  int c;
545
82
  bfd_byte *p;
546
82
  bfd_byte *buf = NULL;
547
82
  size_t bufsize;
548
82
  bool error;
549
550
82
  if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
551
0
    goto error_return;
552
553
82
  p = contents;
554
82
  bufsize = 0;
555
82
  error = false;
556
82
  while ((c = ihex_get_byte (abfd, &error)) != EOF)
557
82
    {
558
82
      unsigned char hdr[8];
559
82
      unsigned int len;
560
82
      unsigned int type;
561
82
      unsigned int i;
562
563
82
      if (c == '\r' || c == '\n')
564
0
  continue;
565
566
      /* This is called after ihex_scan has succeeded, so we ought to
567
   know the exact format.  */
568
82
      BFD_ASSERT (c == ':');
569
570
82
      if (bfd_read (hdr, 8, abfd) != 8)
571
0
  goto error_return;
572
573
82
      len = HEX2 (hdr);
574
82
      type = HEX2 (hdr + 6);
575
576
      /* We should only see type 0 records here.  */
577
82
      if (type != 0)
578
0
  {
579
0
    _bfd_error_handler
580
0
      (_("%pB: internal error in ihex_read_section"), abfd);
581
0
    bfd_set_error (bfd_error_bad_value);
582
0
    goto error_return;
583
0
  }
584
585
82
      if (len * 2 > bufsize)
586
82
  {
587
82
    buf = bfd_realloc (buf, len * 2);
588
82
    if (buf == NULL)
589
0
      goto error_return;
590
82
    bufsize = len * 2;
591
82
  }
592
593
82
      if (bfd_read (buf, len * 2, abfd) != len * 2)
594
0
  goto error_return;
595
596
246
      for (i = 0; i < len; i++)
597
164
  *p++ = HEX2 (buf + 2 * i);
598
82
      if ((bfd_size_type) (p - contents) >= section->size)
599
82
  {
600
    /* We've read everything in the section.  */
601
82
    free (buf);
602
82
    return true;
603
82
  }
604
605
      /* Skip the checksum.  */
606
0
      if (bfd_read (buf, 2, abfd) != 2)
607
0
  goto error_return;
608
0
    }
609
610
0
  if ((bfd_size_type) (p - contents) < section->size)
611
0
    {
612
0
      _bfd_error_handler
613
0
  (_("%pB: bad section length in ihex_read_section"), abfd);
614
0
      bfd_set_error (bfd_error_bad_value);
615
0
      goto error_return;
616
0
    }
617
618
0
  free (buf);
619
0
  return true;
620
621
0
 error_return:
622
0
  free (buf);
623
0
  return false;
624
0
}
625
626
/* Get the contents of a section in an Intel Hex file.  */
627
628
static bool
629
ihex_get_section_contents (bfd *abfd,
630
         asection *section,
631
         void * location,
632
         file_ptr offset,
633
         bfd_size_type count)
634
82
{
635
82
  if (section->used_by_bfd == NULL)
636
82
    {
637
82
      section->used_by_bfd = bfd_alloc (abfd, section->size);
638
82
      if (section->used_by_bfd == NULL)
639
0
  return false;
640
82
      if (! ihex_read_section (abfd, section,
641
82
             (bfd_byte *) section->used_by_bfd))
642
0
  return false;
643
82
    }
644
645
82
  memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
646
82
    (size_t) count);
647
648
82
  return true;
649
82
}
650
651
/* Set the contents of a section in an Intel Hex file.  */
652
653
static bool
654
ihex_set_section_contents (bfd *abfd,
655
         asection *section,
656
         const void * location,
657
         file_ptr offset,
658
         bfd_size_type count)
659
0
{
660
0
  struct ihex_data_list *n;
661
0
  bfd_byte *data;
662
0
  struct ihex_data_struct *tdata;
663
664
0
  if (count == 0
665
0
      || (section->flags & SEC_ALLOC) == 0
666
0
      || (section->flags & SEC_LOAD) == 0)
667
0
    return true;
668
669
0
  n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n));
670
0
  if (n == NULL)
671
0
    return false;
672
673
0
  data = (bfd_byte *) bfd_alloc (abfd, count);
674
0
  if (data == NULL)
675
0
    return false;
676
0
  memcpy (data, location, (size_t) count);
677
678
0
  n->data = data;
679
0
  n->where = section->lma + offset;
680
0
  n->size = count;
681
682
  /* Sort the records by address.  Optimize for the common case of
683
     adding a record to the end of the list.  */
684
0
  tdata = abfd->tdata.ihex_data;
685
0
  if (tdata->tail != NULL
686
0
      && n->where >= tdata->tail->where)
687
0
    {
688
0
      tdata->tail->next = n;
689
0
      n->next = NULL;
690
0
      tdata->tail = n;
691
0
    }
692
0
  else
693
0
    {
694
0
      struct ihex_data_list **pp;
695
696
0
      for (pp = &tdata->head;
697
0
     *pp != NULL && (*pp)->where < n->where;
698
0
     pp = &(*pp)->next)
699
0
  ;
700
0
      n->next = *pp;
701
0
      *pp = n;
702
0
      if (n->next == NULL)
703
0
  tdata->tail = n;
704
0
    }
705
706
0
  return true;
707
0
}
708
709
/* Write a record out to an Intel Hex file.  */
710
711
static bool
712
ihex_write_record (bfd *abfd,
713
       size_t count,
714
       unsigned int addr,
715
       unsigned int type,
716
       bfd_byte *data)
717
0
{
718
0
  static const char digs[] = "0123456789ABCDEF";
719
0
  char buf[9 + CHUNK * 2 + 4];
720
0
  char *p;
721
0
  unsigned int chksum;
722
0
  unsigned int i;
723
0
  size_t total;
724
725
0
#define TOHEX(buf, v) \
726
0
  ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
727
728
0
  buf[0] = ':';
729
0
  TOHEX (buf + 1, count);
730
0
  TOHEX (buf + 3, (addr >> 8) & 0xff);
731
0
  TOHEX (buf + 5, addr & 0xff);
732
0
  TOHEX (buf + 7, type);
733
734
0
  chksum = count + addr + (addr >> 8) + type;
735
736
0
  for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
737
0
    {
738
0
      TOHEX (p, *data);
739
0
      chksum += *data;
740
0
    }
741
742
0
  TOHEX (p, (- chksum) & 0xff);
743
0
  p[2] = '\r';
744
0
  p[3] = '\n';
745
746
0
  total = 9 + count * 2 + 4;
747
0
  if (bfd_write (buf, total, abfd) != total)
748
0
    return false;
749
750
0
  return true;
751
0
}
752
753
/* Write out an Intel Hex file.  */
754
755
static bool
756
ihex_write_object_contents (bfd *abfd)
757
0
{
758
0
  bfd_vma segbase;
759
0
  bfd_vma extbase;
760
0
  struct ihex_data_list *l;
761
762
0
  segbase = 0;
763
0
  extbase = 0;
764
0
  for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
765
0
    {
766
0
      bfd_vma where;
767
0
      bfd_byte *p;
768
0
      bfd_size_type count;
769
770
0
      where = l->where;
771
772
0
#ifdef BFD64
773
      /* IHex only supports 32-bit addresses, and we want to check
774
   that 64-bit addresses are in range.  This isn't quite as
775
   obvious as it may seem, since some targets have 32-bit
776
   addresses that are sign extended to 64 bits.  So complain
777
   only if addresses overflow both unsigned and signed 32-bit
778
   integers.  */
779
0
      if (where > 0xffffffff
780
0
    && where + 0x80000000 > 0xffffffff)
781
0
  {
782
0
    _bfd_error_handler
783
      /* xgettext:c-format */
784
0
      (_("%pB 64-bit address %#" PRIx64
785
0
         " out of range for Intel Hex file"),
786
0
       abfd, (uint64_t) where);
787
0
    bfd_set_error (bfd_error_bad_value);
788
0
    return false;
789
0
  }
790
0
      where &= 0xffffffff;
791
0
#endif
792
793
0
      p = l->data;
794
0
      count = l->size;
795
796
0
      while (count > 0)
797
0
  {
798
0
    size_t now;
799
0
    unsigned int rec_addr;
800
801
0
    now = count;
802
0
    if (count > CHUNK)
803
0
      now = CHUNK;
804
805
0
    if (where < extbase
806
0
        || where - extbase < segbase
807
0
        || where - extbase - segbase > 0xffff)
808
0
      {
809
0
        bfd_byte addr[2];
810
811
        /* We need a new base address.  */
812
0
        if (extbase == 0 && where <= 0xfffff)
813
0
    {
814
0
      segbase = where & 0xf0000;
815
0
      addr[0] = (bfd_byte)(segbase >> 12) & 0xff;
816
0
      addr[1] = (bfd_byte)(segbase >> 4) & 0xff;
817
0
      if (! ihex_write_record (abfd, 2, 0, 2, addr))
818
0
        return false;
819
0
    }
820
0
        else
821
0
    {
822
      /* The extended address record and the extended
823
         linear address record are combined, at least by
824
         some readers.  We need an extended linear address
825
         record here, so if we've already written out an
826
         extended address record, zero it out to avoid
827
         confusion.  */
828
0
      if (segbase != 0)
829
0
        {
830
0
          addr[0] = 0;
831
0
          addr[1] = 0;
832
0
          if (! ihex_write_record (abfd, 2, 0, 2, addr))
833
0
      return false;
834
0
          segbase = 0;
835
0
        }
836
837
0
      extbase = where & 0xffff0000;
838
0
      if (where > extbase + 0xffff)
839
0
        {
840
0
          _bfd_error_handler
841
      /* xgettext:c-format */
842
0
      (_("%pB: address %#" PRIx64
843
0
         " out of range for Intel Hex file"),
844
0
       abfd, (uint64_t) where);
845
0
          bfd_set_error (bfd_error_bad_value);
846
0
          return false;
847
0
        }
848
0
      addr[0] = (bfd_byte)(extbase >> 24) & 0xff;
849
0
      addr[1] = (bfd_byte)(extbase >> 16) & 0xff;
850
0
      if (! ihex_write_record (abfd, 2, 0, 4, addr))
851
0
        return false;
852
0
    }
853
0
      }
854
855
0
    rec_addr = where - (extbase + segbase);
856
857
    /* Output records shouldn't cross 64K boundaries.  */
858
0
    if (rec_addr + now > 0xffff)
859
0
      now = 0x10000 - rec_addr;
860
861
0
    if (! ihex_write_record (abfd, now, rec_addr, 0, p))
862
0
      return false;
863
864
0
    where += now;
865
0
    p += now;
866
0
    count -= now;
867
0
  }
868
0
    }
869
870
0
  if (abfd->start_address != 0)
871
0
    {
872
0
      bfd_vma start;
873
0
      bfd_byte startbuf[4];
874
875
0
      start = abfd->start_address;
876
877
0
      if (start <= 0xfffff)
878
0
  {
879
0
    startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
880
0
    startbuf[1] = 0;
881
0
    startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
882
0
    startbuf[3] = (bfd_byte)start & 0xff;
883
0
    if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
884
0
      return false;
885
0
  }
886
0
      else
887
0
  {
888
0
    startbuf[0] = (bfd_byte)(start >> 24) & 0xff;
889
0
    startbuf[1] = (bfd_byte)(start >> 16) & 0xff;
890
0
    startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
891
0
    startbuf[3] = (bfd_byte)start & 0xff;
892
0
    if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
893
0
      return false;
894
0
  }
895
0
    }
896
897
0
  if (! ihex_write_record (abfd, 0, 0, 1, NULL))
898
0
    return false;
899
900
0
  return true;
901
0
}
902
903
/* Set the architecture for the output file.  The architecture is
904
   irrelevant, so we ignore errors about unknown architectures.  */
905
906
static bool
907
ihex_set_arch_mach (bfd *abfd,
908
        enum bfd_architecture arch,
909
        unsigned long mach)
910
0
{
911
0
  if (! bfd_default_set_arch_mach (abfd, arch, mach))
912
0
    {
913
0
      if (arch != bfd_arch_unknown)
914
0
  return false;
915
0
    }
916
0
  return true;
917
0
}
918
919
/* Some random definitions for the target vector.  */
920
921
#define ihex_close_and_cleanup        _bfd_generic_close_and_cleanup
922
#define ihex_bfd_free_cached_info     _bfd_generic_bfd_free_cached_info
923
#define ihex_new_section_hook       _bfd_generic_new_section_hook
924
#define ihex_sizeof_headers       _bfd_nolink_sizeof_headers
925
#define ihex_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
926
#define ihex_bfd_relax_section        bfd_generic_relax_section
927
#define ihex_bfd_gc_sections        bfd_generic_gc_sections
928
#define ihex_bfd_lookup_section_flags     bfd_generic_lookup_section_flags
929
#define ihex_bfd_is_group_section     bfd_generic_is_group_section
930
#define ihex_bfd_group_name       bfd_generic_group_name
931
#define ihex_bfd_discard_group        bfd_generic_discard_group
932
#define ihex_section_already_linked     _bfd_generic_section_already_linked
933
#define ihex_bfd_define_common_symbol     bfd_generic_define_common_symbol
934
#define ihex_bfd_link_hide_symbol     _bfd_generic_link_hide_symbol
935
#define ihex_bfd_define_start_stop      bfd_generic_define_start_stop
936
#define ihex_bfd_link_hash_table_create     _bfd_generic_link_hash_table_create
937
#define ihex_bfd_link_add_symbols     _bfd_generic_link_add_symbols
938
#define ihex_bfd_link_just_syms       _bfd_generic_link_just_syms
939
#define ihex_bfd_copy_link_hash_symbol_type   _bfd_generic_copy_link_hash_symbol_type
940
#define ihex_bfd_final_link       _bfd_generic_final_link
941
#define ihex_bfd_link_split_section     _bfd_generic_link_split_section
942
#define ihex_bfd_link_check_relocs      _bfd_generic_link_check_relocs
943
944
/* The Intel Hex target vector.  */
945
946
const bfd_target ihex_vec =
947
{
948
  "ihex",     /* Name.  */
949
  bfd_target_ihex_flavour,
950
  BFD_ENDIAN_UNKNOWN,   /* Target byte order.  */
951
  BFD_ENDIAN_UNKNOWN,   /* Target headers byte order.  */
952
  0,        /* Object flags.  */
953
  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD),  /* Section flags.  */
954
  0,        /* Leading underscore.  */
955
  ' ',        /* AR_pad_char.  */
956
  16,       /* AR_max_namelen.  */
957
  0,        /* match priority.  */
958
  TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
959
  TARGET_MERGE_SECTIONS,
960
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
961
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
962
  bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data.  */
963
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
964
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
965
  bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
966
967
  {
968
    _bfd_dummy_target,
969
    ihex_object_p,    /* bfd_check_format.  */
970
    _bfd_dummy_target,
971
    _bfd_dummy_target,
972
  },
973
  {
974
    _bfd_bool_bfd_false_error,
975
    ihex_mkobject,
976
    _bfd_bool_bfd_false_error,
977
    _bfd_bool_bfd_false_error,
978
  },
979
  {       /* bfd_write_contents.  */
980
    _bfd_bool_bfd_false_error,
981
    ihex_write_object_contents,
982
    _bfd_bool_bfd_false_error,
983
    _bfd_bool_bfd_false_error,
984
  },
985
986
  BFD_JUMP_TABLE_GENERIC (ihex),
987
  BFD_JUMP_TABLE_COPY (_bfd_generic),
988
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
989
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
990
  BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
991
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
992
  BFD_JUMP_TABLE_WRITE (ihex),
993
  BFD_JUMP_TABLE_LINK (ihex),
994
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
995
996
  NULL,
997
998
  NULL
999
};