Coverage Report

Created: 2026-03-10 08:46

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
29
#define CHUNK 16
131
132
/* Macros for converting between hex and binary.  */
133
134
20.3k
#define NIBBLE(x)    (hex_value (x))
135
11.5k
#define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
136
2.05k
#define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
137
18.2k
#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
96.8k
{
163
96.8k
  static bool inited;
164
165
96.8k
  if (! inited)
166
9
    {
167
9
      inited = true;
168
9
      hex_init ();
169
9
    }
170
96.8k
}
171
172
/* Create an ihex object.  */
173
174
static bool
175
ihex_mkobject (bfd *abfd)
176
130
{
177
130
  struct ihex_data_struct *tdata;
178
179
130
  tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata));
180
130
  if (tdata == NULL)
181
0
    return false;
182
183
130
  abfd->tdata.ihex_data = tdata;
184
130
  tdata->head = NULL;
185
130
  tdata->tail = NULL;
186
130
  return true;
187
130
}
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
3.20k
{
195
3.20k
  bfd_byte c;
196
197
3.20k
  if (bfd_read (&c, 1, abfd) != 1)
198
17
    {
199
17
      if (bfd_get_error () != bfd_error_file_truncated)
200
1
  *errorptr = true;
201
17
      return EOF;
202
17
    }
203
204
3.19k
  return c & 0xff;
205
3.20k
}
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
53
{
212
53
  if (c == EOF)
213
0
    {
214
0
      if (! error)
215
0
  bfd_set_error (bfd_error_file_truncated);
216
0
    }
217
53
  else
218
53
    {
219
53
      char buf[10];
220
221
53
      if (! ISPRINT (c))
222
30
  sprintf (buf, "\\%03o", (unsigned int) c & 0xff);
223
23
      else
224
23
  {
225
23
    buf[0] = c;
226
23
    buf[1] = '\0';
227
23
  }
228
53
      _bfd_error_handler
229
  /* xgettext:c-format */
230
53
  (_("%pB:%d: unexpected character `%s' in Intel Hex file"),
231
53
   abfd, lineno, buf);
232
53
      bfd_set_error (bfd_error_bad_value);
233
53
    }
234
53
}
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
114
{
242
114
  bfd_vma segbase;
243
114
  bfd_vma extbase;
244
114
  asection *sec;
245
114
  unsigned int lineno;
246
114
  bool error;
247
114
  bfd_byte *buf = NULL;
248
114
  size_t bufsize;
249
114
  int c;
250
251
114
  if (bfd_seek (abfd, 0, SEEK_SET) != 0)
252
0
    goto error_return;
253
254
114
  abfd->start_address = 0;
255
256
114
  segbase = 0;
257
114
  extbase = 0;
258
114
  sec = NULL;
259
114
  lineno = 1;
260
114
  error = false;
261
114
  bufsize = 0;
262
263
3.17k
  while ((c = ihex_get_byte (abfd, &error)) != EOF)
264
3.16k
    {
265
3.16k
      if (c == '\r')
266
578
  continue;
267
2.58k
      else if (c == '\n')
268
1.16k
  {
269
1.16k
    ++lineno;
270
1.16k
    continue;
271
1.16k
  }
272
1.41k
      else if (c != ':')
273
23
  {
274
23
    ihex_bad_byte (abfd, lineno, c, error);
275
23
    goto error_return;
276
23
  }
277
1.39k
      else
278
1.39k
  {
279
1.39k
    file_ptr pos;
280
1.39k
    unsigned char hdr[8];
281
1.39k
    unsigned int i;
282
1.39k
    unsigned int len;
283
1.39k
    bfd_vma addr;
284
1.39k
    unsigned int type;
285
1.39k
    unsigned int chars;
286
1.39k
    unsigned int chksum;
287
288
    /* This is a data record.  */
289
1.39k
    pos = bfd_tell (abfd) - 1;
290
291
    /* Read the header bytes.  */
292
1.39k
    if (bfd_read (hdr, 8, abfd) != 8)
293
14
      goto error_return;
294
295
12.3k
    for (i = 0; i < 8; i++)
296
10.9k
      {
297
10.9k
        if (! ISHEX (hdr[i]))
298
15
    {
299
15
      ihex_bad_byte (abfd, lineno, hdr[i], error);
300
15
      goto error_return;
301
15
    }
302
10.9k
      }
303
304
1.36k
    len = HEX2 (hdr);
305
1.36k
    addr = HEX4 (hdr + 2);
306
1.36k
    type = HEX2 (hdr + 6);
307
308
    /* Read the data bytes.  */
309
1.36k
    chars = len * 2 + 2;
310
1.36k
    if (chars >= bufsize)
311
830
      {
312
830
        buf = bfd_realloc (buf, chars);
313
830
        if (buf == NULL)
314
0
    goto error_return;
315
830
        bufsize = chars;
316
830
      }
317
318
1.36k
    if (bfd_read (buf, chars, abfd) != chars)
319
9
      goto error_return;
320
321
7.60k
    for (i = 0; i < chars; i++)
322
6.26k
      {
323
6.26k
        if (! ISHEX (buf[i]))
324
15
    {
325
15
      ihex_bad_byte (abfd, lineno, buf[i], error);
326
15
      goto error_return;
327
15
    }
328
6.26k
      }
329
330
    /* Check the checksum.  */
331
1.34k
    chksum = len + addr + (addr >> 8) + type;
332
3.09k
    for (i = 0; i < len; i++)
333
1.75k
      chksum += HEX2 (buf + 2 * i);
334
1.34k
    if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
335
16
      {
336
16
        _bfd_error_handler
337
    /* xgettext:c-format */
338
16
    (_("%pB:%u: bad checksum in Intel Hex file (expected %u, found %u)"),
339
16
     abfd, lineno,
340
16
     (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
341
16
        bfd_set_error (bfd_error_bad_value);
342
16
        goto error_return;
343
16
      }
344
345
1.32k
    switch (type)
346
1.32k
      {
347
951
      case 0:
348
        /* This is a data record.  */
349
951
        if (sec != NULL
350
753
      && 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
951
        else if (len > 0)
357
246
    {
358
246
      char secbuf[20];
359
246
      char *secname;
360
246
      size_t amt;
361
246
      flagword flags;
362
363
246
      sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
364
246
      amt = strlen (secbuf) + 1;
365
246
      secname = (char *) bfd_alloc (abfd, amt);
366
246
      if (secname == NULL)
367
0
        goto error_return;
368
246
      strcpy (secname, secbuf);
369
246
      flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
370
246
      sec = bfd_make_section_with_flags (abfd, secname, flags);
371
246
      if (sec == NULL)
372
0
        goto error_return;
373
246
      sec->vma = extbase + segbase + addr;
374
246
      sec->lma = extbase + segbase + addr;
375
246
      sec->size = len;
376
246
      sec->filepos = pos;
377
246
    }
378
951
        break;
379
380
951
      case 1:
381
        /* An end record.  */
382
1
        if (abfd->start_address == 0)
383
1
    abfd->start_address = addr;
384
1
        free (buf);
385
1
        return true;
386
387
7
      case 2:
388
        /* An extended address record.  */
389
7
        if (len != 2)
390
1
    {
391
1
      _bfd_error_handler
392
        /* xgettext:c-format */
393
1
        (_("%pB:%u: bad extended address record length in Intel Hex file"),
394
1
         abfd, lineno);
395
1
      bfd_set_error (bfd_error_bad_value);
396
1
      goto error_return;
397
1
    }
398
399
6
        segbase = HEX4 (buf) << 4;
400
401
6
        sec = NULL;
402
403
6
        break;
404
405
265
      case 3:
406
        /* An extended start address record.  */
407
265
        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
265
        abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
418
419
265
        sec = NULL;
420
421
265
        break;
422
423
35
      case 4:
424
        /* An extended linear address record.  */
425
35
        if (len != 2)
426
1
    {
427
1
      _bfd_error_handler
428
        /* xgettext:c-format */
429
1
        (_("%pB:%u: bad extended linear address record length in Intel Hex file"),
430
1
         abfd, lineno);
431
1
      bfd_set_error (bfd_error_bad_value);
432
1
      goto error_return;
433
1
    }
434
435
34
        extbase = HEX4 (buf) << 16;
436
437
34
        sec = NULL;
438
439
34
        break;
440
441
64
      case 5:
442
        /* An extended linear start address record.  */
443
64
        if (len != 2 && len != 4)
444
1
    {
445
1
      _bfd_error_handler
446
        /* xgettext:c-format */
447
1
        (_("%pB:%u: bad extended linear start address length in Intel Hex file"),
448
1
         abfd, lineno);
449
1
      bfd_set_error (bfd_error_bad_value);
450
1
      goto error_return;
451
1
    }
452
453
63
        if (len == 2)
454
3
    abfd->start_address += HEX4 (buf) << 16;
455
60
        else
456
60
    abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
457
458
63
        sec = NULL;
459
460
63
        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
1.32k
      }
470
1.32k
  }
471
3.16k
    }
472
473
17
  if (error)
474
1
    goto error_return;
475
476
16
  free (buf);
477
16
  return true;
478
479
97
 error_return:
480
97
  free (buf);
481
97
  return false;
482
17
}
483
484
/* Try to recognize an Intel Hex file.  */
485
486
static bfd_cleanup
487
ihex_object_p (bfd *abfd)
488
96.8k
{
489
96.8k
  bfd_byte b[9];
490
96.8k
  unsigned int i;
491
96.8k
  unsigned int type;
492
493
96.8k
  ihex_init ();
494
495
96.8k
  if (bfd_seek (abfd, 0, SEEK_SET) != 0)
496
0
    return NULL;
497
96.8k
  if (bfd_read (b, 9, abfd) != 9)
498
832
    {
499
832
      if (bfd_get_error () == bfd_error_file_truncated)
500
617
  bfd_set_error (bfd_error_wrong_format);
501
832
      return NULL;
502
832
    }
503
504
95.9k
  if (b[0] != ':')
505
95.8k
    {
506
95.8k
      bfd_set_error (bfd_error_wrong_format);
507
95.8k
      return NULL;
508
95.8k
    }
509
510
1.06k
  for (i = 1; i < 9; i++)
511
947
    {
512
947
      if (! ISHEX (b[i]))
513
8
  {
514
8
    bfd_set_error (bfd_error_wrong_format);
515
8
    return NULL;
516
8
  }
517
947
    }
518
519
115
  type = HEX2 (b + 7);
520
115
  if (type > 5)
521
1
    {
522
1
      bfd_set_error (bfd_error_wrong_format);
523
1
      return NULL;
524
1
    }
525
526
  /* OK, it looks like it really is an Intel Hex file.  */
527
114
  if (!ihex_mkobject (abfd))
528
0
    return NULL;
529
530
114
  if (!ihex_scan (abfd))
531
97
    {
532
97
      bfd_release (abfd, abfd->tdata.any);
533
97
      return NULL;
534
97
    }
535
536
17
  return _bfd_no_cleanup;
537
114
}
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
29
{
544
29
  int c;
545
29
  bfd_byte *p;
546
29
  bfd_byte *buf = NULL;
547
29
  size_t bufsize;
548
29
  bool error;
549
550
29
  if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
551
0
    goto error_return;
552
553
29
  p = contents;
554
29
  bufsize = 0;
555
29
  error = false;
556
29
  while ((c = ihex_get_byte (abfd, &error)) != EOF)
557
29
    {
558
29
      unsigned char hdr[8];
559
29
      unsigned int len;
560
29
      unsigned int type;
561
29
      unsigned int i;
562
563
29
      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
29
      BFD_ASSERT (c == ':');
569
570
29
      if (bfd_read (hdr, 8, abfd) != 8)
571
0
  goto error_return;
572
573
29
      len = HEX2 (hdr);
574
29
      type = HEX2 (hdr + 6);
575
576
      /* We should only see type 0 records here.  */
577
29
      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
29
      if (len * 2 > bufsize)
586
29
  {
587
29
    buf = bfd_realloc (buf, len * 2);
588
29
    if (buf == NULL)
589
0
      goto error_return;
590
29
    bufsize = len * 2;
591
29
  }
592
593
29
      if (bfd_read (buf, len * 2, abfd) != len * 2)
594
0
  goto error_return;
595
596
58
      for (i = 0; i < len; i++)
597
29
  *p++ = HEX2 (buf + 2 * i);
598
29
      if ((bfd_size_type) (p - contents) >= section->size)
599
29
  {
600
    /* We've read everything in the section.  */
601
29
    free (buf);
602
29
    return true;
603
29
  }
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
29
{
635
29
  if (section->used_by_bfd == NULL)
636
29
    {
637
29
      section->used_by_bfd = bfd_alloc (abfd, section->size);
638
29
      if (section->used_by_bfd == NULL)
639
0
  return false;
640
29
      if (! ihex_read_section (abfd, section,
641
29
             (bfd_byte *) section->used_by_bfd))
642
0
  return false;
643
29
    }
644
645
29
  memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
646
29
    (size_t) count);
647
648
29
  return true;
649
29
}
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
29
{
660
29
  struct ihex_data_list *n;
661
29
  bfd_byte *data;
662
29
  struct ihex_data_struct *tdata;
663
664
29
  if (count == 0
665
29
      || (section->flags & SEC_ALLOC) == 0
666
29
      || (section->flags & SEC_LOAD) == 0)
667
0
    return true;
668
669
29
  n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n));
670
29
  if (n == NULL)
671
0
    return false;
672
673
29
  data = (bfd_byte *) bfd_alloc (abfd, count);
674
29
  if (data == NULL)
675
0
    return false;
676
29
  memcpy (data, location, (size_t) count);
677
678
29
  n->data = data;
679
29
  n->where = section->lma + offset;
680
29
  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
29
  tdata = abfd->tdata.ihex_data;
685
29
  if (tdata->tail != NULL
686
27
      && n->where >= tdata->tail->where)
687
27
    {
688
27
      tdata->tail->next = n;
689
27
      n->next = NULL;
690
27
      tdata->tail = n;
691
27
    }
692
2
  else
693
2
    {
694
2
      struct ihex_data_list **pp;
695
696
2
      for (pp = &tdata->head;
697
2
     *pp != NULL && (*pp)->where < n->where;
698
2
     pp = &(*pp)->next)
699
0
  ;
700
2
      n->next = *pp;
701
2
      *pp = n;
702
2
      if (n->next == NULL)
703
2
  tdata->tail = n;
704
2
    }
705
706
29
  return true;
707
29
}
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
33
{
718
33
  static const char digs[] = "0123456789ABCDEF";
719
33
  char buf[9 + CHUNK * 2 + 4];
720
33
  char *p;
721
33
  unsigned int chksum;
722
33
  unsigned int i;
723
33
  size_t total;
724
725
33
#define TOHEX(buf, v) \
726
198
  ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
727
728
33
  buf[0] = ':';
729
33
  TOHEX (buf + 1, count);
730
33
  TOHEX (buf + 3, (addr >> 8) & 0xff);
731
33
  TOHEX (buf + 5, addr & 0xff);
732
33
  TOHEX (buf + 7, type);
733
734
33
  chksum = count + addr + (addr >> 8) + type;
735
736
66
  for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
737
33
    {
738
33
      TOHEX (p, *data);
739
33
      chksum += *data;
740
33
    }
741
742
33
  TOHEX (p, (- chksum) & 0xff);
743
33
  p[2] = '\r';
744
33
  p[3] = '\n';
745
746
33
  total = 9 + count * 2 + 4;
747
33
  if (bfd_write (buf, total, abfd) != total)
748
0
    return false;
749
750
33
  return true;
751
33
}
752
753
/* Write out an Intel Hex file.  */
754
755
static bool
756
ihex_write_object_contents (bfd *abfd)
757
3
{
758
3
  bfd_vma segbase;
759
3
  bfd_vma extbase;
760
3
  struct ihex_data_list *l;
761
762
3
  segbase = 0;
763
3
  extbase = 0;
764
32
  for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
765
29
    {
766
29
      bfd_vma where;
767
29
      bfd_byte *p;
768
29
      bfd_size_type count;
769
770
29
      where = l->where;
771
772
29
#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
29
      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
29
      where &= 0xffffffff;
791
29
#endif
792
793
29
      p = l->data;
794
29
      count = l->size;
795
796
58
      while (count > 0)
797
29
  {
798
29
    size_t now;
799
29
    unsigned int rec_addr;
800
801
29
    now = count;
802
29
    if (count > CHUNK)
803
0
      now = CHUNK;
804
805
29
    if (where < extbase
806
29
        || where - extbase < segbase
807
29
        || 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
29
    rec_addr = where - (extbase + segbase);
856
857
    /* Output records shouldn't cross 64K boundaries.  */
858
29
    if (rec_addr + now > 0xffff)
859
0
      now = 0x10000 - rec_addr;
860
861
29
    if (! ihex_write_record (abfd, now, rec_addr, 0, p))
862
0
      return false;
863
864
29
    where += now;
865
29
    p += now;
866
29
    count -= now;
867
29
  }
868
29
    }
869
870
3
  if (abfd->start_address != 0)
871
1
    {
872
1
      bfd_vma start;
873
1
      bfd_byte startbuf[4];
874
875
1
      start = abfd->start_address;
876
877
1
      if (start <= 0xfffff)
878
1
  {
879
1
    startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
880
1
    startbuf[1] = 0;
881
1
    startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
882
1
    startbuf[3] = (bfd_byte)start & 0xff;
883
1
    if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
884
0
      return false;
885
1
  }
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
1
    }
896
897
3
  if (! ihex_write_record (abfd, 0, 0, 1, NULL))
898
0
    return false;
899
900
3
  return true;
901
3
}
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
3
{
911
3
  if (! bfd_default_set_arch_mach (abfd, arch, mach))
912
3
    {
913
3
      if (arch != bfd_arch_unknown)
914
0
  return false;
915
3
    }
916
3
  return true;
917
3
}
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
};