1 /* BFD back-end for Intel Hex objects.
2 Copyright (C) 1995-2023 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 #define CHUNK 16
131
132 /* Macros for converting between hex and binary. */
133
134 #define NIBBLE(x) (hex_value (x))
135 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
136 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
137 #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 {
163 static bool inited;
164
165 if (! inited)
166 {
167 inited = true;
168 hex_init ();
169 }
170 }
171
172 /* Create an ihex object. */
173
174 static bool
175 ihex_mkobject (bfd *abfd)
176 {
177 struct ihex_data_struct *tdata;
178
179 tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata));
180 if (tdata == NULL)
181 return false;
182
183 abfd->tdata.ihex_data = tdata;
184 tdata->head = NULL;
185 tdata->tail = NULL;
186 return true;
187 }
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 {
195 bfd_byte c;
196
197 if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1)
198 {
199 if (bfd_get_error () != bfd_error_file_truncated)
200 *errorptr = true;
201 return EOF;
202 }
203
204 return (int) (c & 0xff);
205 }
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 {
212 if (c == EOF)
213 {
214 if (! error)
215 bfd_set_error (bfd_error_file_truncated);
216 }
217 else
218 {
219 char buf[10];
220
221 if (! ISPRINT (c))
222 sprintf (buf, "\\%03o", (unsigned int) c & 0xff);
223 else
224 {
225 buf[0] = c;
226 buf[1] = '\0';
227 }
228 _bfd_error_handler
229 /* xgettext:c-format */
230 (_("%pB:%d: unexpected character `%s' in Intel Hex file"),
231 abfd, lineno, buf);
232 bfd_set_error (bfd_error_bad_value);
233 }
234 }
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 {
242 bfd_vma segbase;
243 bfd_vma extbase;
244 asection *sec;
245 unsigned int lineno;
246 bool error;
247 bfd_byte *buf = NULL;
248 size_t bufsize;
249 int c;
250
251 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
252 goto error_return;
253
254 abfd->start_address = 0;
255
256 segbase = 0;
257 extbase = 0;
258 sec = NULL;
259 lineno = 1;
260 error = false;
261 bufsize = 0;
262
263 while ((c = ihex_get_byte (abfd, &error)) != EOF)
264 {
265 if (c == '\r')
266 continue;
267 else if (c == '\n')
268 {
269 ++lineno;
270 continue;
271 }
272 else if (c != ':')
273 {
274 ihex_bad_byte (abfd, lineno, c, error);
275 goto error_return;
276 }
277 else
278 {
279 file_ptr pos;
280 unsigned char hdr[8];
281 unsigned int i;
282 unsigned int len;
283 bfd_vma addr;
284 unsigned int type;
285 unsigned int chars;
286 unsigned int chksum;
287
288 /* This is a data record. */
289 pos = bfd_tell (abfd) - 1;
290
291 /* Read the header bytes. */
292 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8)
293 goto error_return;
294
295 for (i = 0; i < 8; i++)
296 {
297 if (! ISHEX (hdr[i]))
298 {
299 ihex_bad_byte (abfd, lineno, hdr[i], error);
300 goto error_return;
301 }
302 }
303
304 len = HEX2 (hdr);
305 addr = HEX4 (hdr + 2);
306 type = HEX2 (hdr + 6);
307
308 /* Read the data bytes. */
309 chars = len * 2 + 2;
310 if (chars >= bufsize)
311 {
312 buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars);
313 if (buf == NULL)
314 goto error_return;
315 bufsize = chars;
316 }
317
318 if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars)
319 goto error_return;
320
321 for (i = 0; i < chars; i++)
322 {
323 if (! ISHEX (buf[i]))
324 {
325 ihex_bad_byte (abfd, lineno, buf[i], error);
326 goto error_return;
327 }
328 }
329
330 /* Check the checksum. */
331 chksum = len + addr + (addr >> 8) + type;
332 for (i = 0; i < len; i++)
333 chksum += HEX2 (buf + 2 * i);
334 if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
335 {
336 _bfd_error_handler
337 /* xgettext:c-format */
338 (_("%pB:%u: bad checksum in Intel Hex file (expected %u, found %u)"),
339 abfd, lineno,
340 (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
341 bfd_set_error (bfd_error_bad_value);
342 goto error_return;
343 }
344
345 switch (type)
346 {
347 case 0:
348 /* This is a data record. */
349 if (sec != NULL
350 && sec->vma + sec->size == extbase + segbase + addr)
351 {
352 /* This data goes at the end of the section we are
353 currently building. */
354 sec->size += len;
355 }
356 else if (len > 0)
357 {
358 char secbuf[20];
359 char *secname;
360 size_t amt;
361 flagword flags;
362
363 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
364 amt = strlen (secbuf) + 1;
365 secname = (char *) bfd_alloc (abfd, amt);
366 if (secname == NULL)
367 goto error_return;
368 strcpy (secname, secbuf);
369 flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
370 sec = bfd_make_section_with_flags (abfd, secname, flags);
371 if (sec == NULL)
372 goto error_return;
373 sec->vma = extbase + segbase + addr;
374 sec->lma = extbase + segbase + addr;
375 sec->size = len;
376 sec->filepos = pos;
377 }
378 break;
379
380 case 1:
381 /* An end record. */
382 if (abfd->start_address == 0)
383 abfd->start_address = addr;
384 free (buf);
385 return true;
386
387 case 2:
388 /* An extended address record. */
389 if (len != 2)
390 {
391 _bfd_error_handler
392 /* xgettext:c-format */
393 (_("%pB:%u: bad extended address record length in Intel Hex file"),
394 abfd, lineno);
395 bfd_set_error (bfd_error_bad_value);
396 goto error_return;
397 }
398
399 segbase = HEX4 (buf) << 4;
400
401 sec = NULL;
402
403 break;
404
405 case 3:
406 /* An extended start address record. */
407 if (len != 4)
408 {
409 _bfd_error_handler
410 /* xgettext:c-format */
411 (_("%pB:%u: bad extended start address length in Intel Hex file"),
412 abfd, lineno);
413 bfd_set_error (bfd_error_bad_value);
414 goto error_return;
415 }
416
417 abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
418
419 sec = NULL;
420
421 break;
422
423 case 4:
424 /* An extended linear address record. */
425 if (len != 2)
426 {
427 _bfd_error_handler
428 /* xgettext:c-format */
429 (_("%pB:%u: bad extended linear address record length in Intel Hex file"),
430 abfd, lineno);
431 bfd_set_error (bfd_error_bad_value);
432 goto error_return;
433 }
434
435 extbase = HEX4 (buf) << 16;
436
437 sec = NULL;
438
439 break;
440
441 case 5:
442 /* An extended linear start address record. */
443 if (len != 2 && len != 4)
444 {
445 _bfd_error_handler
446 /* xgettext:c-format */
447 (_("%pB:%u: bad extended linear start address length in Intel Hex file"),
448 abfd, lineno);
449 bfd_set_error (bfd_error_bad_value);
450 goto error_return;
451 }
452
453 if (len == 2)
454 abfd->start_address += HEX4 (buf) << 16;
455 else
456 abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
457
458 sec = NULL;
459
460 break;
461
462 default:
463 _bfd_error_handler
464 /* xgettext:c-format */
465 (_("%pB:%u: unrecognized ihex type %u in Intel Hex file"),
466 abfd, lineno, type);
467 bfd_set_error (bfd_error_bad_value);
468 goto error_return;
469 }
470 }
471 }
472
473 if (error)
474 goto error_return;
475
476 free (buf);
477 return true;
478
479 error_return:
480 free (buf);
481 return false;
482 }
483
484 /* Try to recognize an Intel Hex file. */
485
486 static bfd_cleanup
487 ihex_object_p (bfd *abfd)
488 {
489 void * tdata_save;
490 bfd_byte b[9];
491 unsigned int i;
492 unsigned int type;
493
494 ihex_init ();
495
496 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
497 return NULL;
498 if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9)
499 {
500 if (bfd_get_error () == bfd_error_file_truncated)
501 bfd_set_error (bfd_error_wrong_format);
502 return NULL;
503 }
504
505 if (b[0] != ':')
506 {
507 bfd_set_error (bfd_error_wrong_format);
508 return NULL;
509 }
510
511 for (i = 1; i < 9; i++)
512 {
513 if (! ISHEX (b[i]))
514 {
515 bfd_set_error (bfd_error_wrong_format);
516 return NULL;
517 }
518 }
519
520 type = HEX2 (b + 7);
521 if (type > 5)
522 {
523 bfd_set_error (bfd_error_wrong_format);
524 return NULL;
525 }
526
527 /* OK, it looks like it really is an Intel Hex file. */
528 tdata_save = abfd->tdata.any;
529 if (! ihex_mkobject (abfd) || ! ihex_scan (abfd))
530 {
531 if (abfd->tdata.any != tdata_save && abfd->tdata.any != NULL)
532 bfd_release (abfd, abfd->tdata.any);
533 abfd->tdata.any = tdata_save;
534 return NULL;
535 }
536
537 return _bfd_no_cleanup;
538 }
539
540 /* Read the contents of a section in an Intel Hex file. */
541
542 static bool
543 ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents)
544 {
545 int c;
546 bfd_byte *p;
547 bfd_byte *buf = NULL;
548 size_t bufsize;
549 bool error;
550
551 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
552 goto error_return;
553
554 p = contents;
555 bufsize = 0;
556 error = false;
557 while ((c = ihex_get_byte (abfd, &error)) != EOF)
558 {
559 unsigned char hdr[8];
560 unsigned int len;
561 unsigned int type;
562 unsigned int i;
563
564 if (c == '\r' || c == '\n')
565 continue;
566
567 /* This is called after ihex_scan has succeeded, so we ought to
568 know the exact format. */
569 BFD_ASSERT (c == ':');
570
571 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8)
572 goto error_return;
573
574 len = HEX2 (hdr);
575 type = HEX2 (hdr + 6);
576
577 /* We should only see type 0 records here. */
578 if (type != 0)
579 {
580 _bfd_error_handler
581 (_("%pB: internal error in ihex_read_section"), abfd);
582 bfd_set_error (bfd_error_bad_value);
583 goto error_return;
584 }
585
586 if (len * 2 > bufsize)
587 {
588 buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) len * 2);
589 if (buf == NULL)
590 goto error_return;
591 bufsize = len * 2;
592 }
593
594 if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2)
595 goto error_return;
596
597 for (i = 0; i < len; i++)
598 *p++ = HEX2 (buf + 2 * i);
599 if ((bfd_size_type) (p - contents) >= section->size)
600 {
601 /* We've read everything in the section. */
602 free (buf);
603 return true;
604 }
605
606 /* Skip the checksum. */
607 if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2)
608 goto error_return;
609 }
610
611 if ((bfd_size_type) (p - contents) < section->size)
612 {
613 _bfd_error_handler
614 (_("%pB: bad section length in ihex_read_section"), abfd);
615 bfd_set_error (bfd_error_bad_value);
616 goto error_return;
617 }
618
619 free (buf);
620 return true;
621
622 error_return:
623 free (buf);
624 return false;
625 }
626
627 /* Get the contents of a section in an Intel Hex file. */
628
629 static bool
630 ihex_get_section_contents (bfd *abfd,
631 asection *section,
632 void * location,
633 file_ptr offset,
634 bfd_size_type count)
635 {
636 if (section->used_by_bfd == NULL)
637 {
638 section->used_by_bfd = bfd_alloc (abfd, section->size);
639 if (section->used_by_bfd == NULL)
640 return false;
641 if (! ihex_read_section (abfd, section,
642 (bfd_byte *) section->used_by_bfd))
643 return false;
644 }
645
646 memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
647 (size_t) count);
648
649 return true;
650 }
651
652 /* Set the contents of a section in an Intel Hex file. */
653
654 static bool
655 ihex_set_section_contents (bfd *abfd,
656 asection *section,
657 const void * location,
658 file_ptr offset,
659 bfd_size_type count)
660 {
661 struct ihex_data_list *n;
662 bfd_byte *data;
663 struct ihex_data_struct *tdata;
664
665 if (count == 0
666 || (section->flags & SEC_ALLOC) == 0
667 || (section->flags & SEC_LOAD) == 0)
668 return true;
669
670 n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n));
671 if (n == NULL)
672 return false;
673
674 data = (bfd_byte *) bfd_alloc (abfd, count);
675 if (data == NULL)
676 return false;
677 memcpy (data, location, (size_t) count);
678
679 n->data = data;
680 n->where = section->lma + offset;
681 n->size = count;
682
683 /* Sort the records by address. Optimize for the common case of
684 adding a record to the end of the list. */
685 tdata = abfd->tdata.ihex_data;
686 if (tdata->tail != NULL
687 && n->where >= tdata->tail->where)
688 {
689 tdata->tail->next = n;
690 n->next = NULL;
691 tdata->tail = n;
692 }
693 else
694 {
695 struct ihex_data_list **pp;
696
697 for (pp = &tdata->head;
698 *pp != NULL && (*pp)->where < n->where;
699 pp = &(*pp)->next)
700 ;
701 n->next = *pp;
702 *pp = n;
703 if (n->next == NULL)
704 tdata->tail = n;
705 }
706
707 return true;
708 }
709
710 /* Write a record out to an Intel Hex file. */
711
712 static bool
713 ihex_write_record (bfd *abfd,
714 size_t count,
715 unsigned int addr,
716 unsigned int type,
717 bfd_byte *data)
718 {
719 static const char digs[] = "0123456789ABCDEF";
720 char buf[9 + CHUNK * 2 + 4];
721 char *p;
722 unsigned int chksum;
723 unsigned int i;
724 size_t total;
725
726 #define TOHEX(buf, v) \
727 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
728
729 buf[0] = ':';
730 TOHEX (buf + 1, count);
731 TOHEX (buf + 3, (addr >> 8) & 0xff);
732 TOHEX (buf + 5, addr & 0xff);
733 TOHEX (buf + 7, type);
734
735 chksum = count + addr + (addr >> 8) + type;
736
737 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
738 {
739 TOHEX (p, *data);
740 chksum += *data;
741 }
742
743 TOHEX (p, (- chksum) & 0xff);
744 p[2] = '\r';
745 p[3] = '\n';
746
747 total = 9 + count * 2 + 4;
748 if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total)
749 return false;
750
751 return true;
752 }
753
754 /* Write out an Intel Hex file. */
755
756 static bool
757 ihex_write_object_contents (bfd *abfd)
758 {
759 bfd_vma segbase;
760 bfd_vma extbase;
761 struct ihex_data_list *l;
762
763 segbase = 0;
764 extbase = 0;
765 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
766 {
767 bfd_vma where;
768 bfd_byte *p;
769 bfd_size_type count;
770
771 where = l->where;
772
773 #ifdef BFD64
774 /* IHex only supports 32-bit addresses, and we want to check
775 that 64-bit addresses are in range. This isn't quite as
776 obvious as it may seem, since some targets have 32-bit
777 addresses that are sign extended to 64 bits. So complain
778 only if addresses overflow both unsigned and signed 32-bit
779 integers. */
780 if (where > 0xffffffff
781 && where + 0x80000000 > 0xffffffff)
782 {
783 _bfd_error_handler
784 /* xgettext:c-format */
785 (_("%pB 64-bit address %#" PRIx64
786 " out of range for Intel Hex file"),
787 abfd, (uint64_t) where);
788 bfd_set_error (bfd_error_bad_value);
789 return false;
790 }
791 where &= 0xffffffff;
792 #endif
793
794 p = l->data;
795 count = l->size;
796
797 while (count > 0)
798 {
799 size_t now;
800 unsigned int rec_addr;
801
802 now = count;
803 if (count > CHUNK)
804 now = CHUNK;
805
806 if (where < extbase
807 || where - extbase < segbase
808 || where - extbase - segbase > 0xffff)
809 {
810 bfd_byte addr[2];
811
812 /* We need a new base address. */
813 if (extbase == 0 && where <= 0xfffff)
814 {
815 segbase = where & 0xf0000;
816 addr[0] = (bfd_byte)(segbase >> 12) & 0xff;
817 addr[1] = (bfd_byte)(segbase >> 4) & 0xff;
818 if (! ihex_write_record (abfd, 2, 0, 2, addr))
819 return false;
820 }
821 else
822 {
823 /* The extended address record and the extended
824 linear address record are combined, at least by
825 some readers. We need an extended linear address
826 record here, so if we've already written out an
827 extended address record, zero it out to avoid
828 confusion. */
829 if (segbase != 0)
830 {
831 addr[0] = 0;
832 addr[1] = 0;
833 if (! ihex_write_record (abfd, 2, 0, 2, addr))
834 return false;
835 segbase = 0;
836 }
837
838 extbase = where & 0xffff0000;
839 if (where > extbase + 0xffff)
840 {
841 _bfd_error_handler
842 /* xgettext:c-format */
843 (_("%pB: address %#" PRIx64
844 " out of range for Intel Hex file"),
845 abfd, (uint64_t) where);
846 bfd_set_error (bfd_error_bad_value);
847 return false;
848 }
849 addr[0] = (bfd_byte)(extbase >> 24) & 0xff;
850 addr[1] = (bfd_byte)(extbase >> 16) & 0xff;
851 if (! ihex_write_record (abfd, 2, 0, 4, addr))
852 return false;
853 }
854 }
855
856 rec_addr = where - (extbase + segbase);
857
858 /* Output records shouldn't cross 64K boundaries. */
859 if (rec_addr + now > 0xffff)
860 now = 0x10000 - rec_addr;
861
862 if (! ihex_write_record (abfd, now, rec_addr, 0, p))
863 return false;
864
865 where += now;
866 p += now;
867 count -= now;
868 }
869 }
870
871 if (abfd->start_address != 0)
872 {
873 bfd_vma start;
874 bfd_byte startbuf[4];
875
876 start = abfd->start_address;
877
878 if (start <= 0xfffff)
879 {
880 startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
881 startbuf[1] = 0;
882 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
883 startbuf[3] = (bfd_byte)start & 0xff;
884 if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
885 return false;
886 }
887 else
888 {
889 startbuf[0] = (bfd_byte)(start >> 24) & 0xff;
890 startbuf[1] = (bfd_byte)(start >> 16) & 0xff;
891 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
892 startbuf[3] = (bfd_byte)start & 0xff;
893 if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
894 return false;
895 }
896 }
897
898 if (! ihex_write_record (abfd, 0, 0, 1, NULL))
899 return false;
900
901 return true;
902 }
903
904 /* Set the architecture for the output file. The architecture is
905 irrelevant, so we ignore errors about unknown architectures. */
906
907 static bool
908 ihex_set_arch_mach (bfd *abfd,
909 enum bfd_architecture arch,
910 unsigned long mach)
911 {
912 if (! bfd_default_set_arch_mach (abfd, arch, mach))
913 {
914 if (arch != bfd_arch_unknown)
915 return false;
916 }
917 return true;
918 }
919
920 /* Get the size of the headers, for the linker. */
921
922 static int
923 ihex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
924 struct bfd_link_info *info ATTRIBUTE_UNUSED)
925 {
926 return 0;
927 }
928
929 /* Some random definitions for the target vector. */
930
931 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup
932 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
933 #define ihex_new_section_hook _bfd_generic_new_section_hook
934 #define ihex_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
935 #define ihex_get_symtab_upper_bound _bfd_long_bfd_0
936 #define ihex_canonicalize_symtab _bfd_nosymbols_canonicalize_symtab
937 #define ihex_make_empty_symbol _bfd_generic_make_empty_symbol
938 #define ihex_print_symbol _bfd_nosymbols_print_symbol
939 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info
940 #define ihex_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
941 #define ihex_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
942 #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
943 #define ihex_get_lineno _bfd_nosymbols_get_lineno
944 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line
945 #define ihex_find_nearest_line_with_alt _bfd_nosymbols_find_nearest_line_with_alt
946 #define ihex_find_line _bfd_nosymbols_find_line
947 #define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info
948 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
949 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
950 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
951 #define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
952 #define ihex_bfd_relax_section bfd_generic_relax_section
953 #define ihex_bfd_gc_sections bfd_generic_gc_sections
954 #define ihex_bfd_lookup_section_flags bfd_generic_lookup_section_flags
955 #define ihex_bfd_merge_sections bfd_generic_merge_sections
956 #define ihex_bfd_is_group_section bfd_generic_is_group_section
957 #define ihex_bfd_group_name bfd_generic_group_name
958 #define ihex_bfd_discard_group bfd_generic_discard_group
959 #define ihex_section_already_linked _bfd_generic_section_already_linked
960 #define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol
961 #define ihex_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
962 #define ihex_bfd_define_start_stop bfd_generic_define_start_stop
963 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
964 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
965 #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms
966 #define ihex_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
967 #define ihex_bfd_final_link _bfd_generic_final_link
968 #define ihex_bfd_link_split_section _bfd_generic_link_split_section
969 #define ihex_bfd_link_check_relocs _bfd_generic_link_check_relocs
970
971 /* The Intel Hex target vector. */
972
973 const bfd_target ihex_vec =
974 {
975 "ihex", /* Name. */
976 bfd_target_ihex_flavour,
977 BFD_ENDIAN_UNKNOWN, /* Target byte order. */
978 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
979 0, /* Object flags. */
980 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */
981 0, /* Leading underscore. */
982 ' ', /* AR_pad_char. */
983 16, /* AR_max_namelen. */
984 0, /* match priority. */
985 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
986 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
987 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
988 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
989 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
990 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
991 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
992
993 {
994 _bfd_dummy_target,
995 ihex_object_p, /* bfd_check_format. */
996 _bfd_dummy_target,
997 _bfd_dummy_target,
998 },
999 {
1000 _bfd_bool_bfd_false_error,
1001 ihex_mkobject,
1002 _bfd_generic_mkarchive,
1003 _bfd_bool_bfd_false_error,
1004 },
1005 { /* bfd_write_contents. */
1006 _bfd_bool_bfd_false_error,
1007 ihex_write_object_contents,
1008 _bfd_write_archive_contents,
1009 _bfd_bool_bfd_false_error,
1010 },
1011
1012 BFD_JUMP_TABLE_GENERIC (ihex),
1013 BFD_JUMP_TABLE_COPY (_bfd_generic),
1014 BFD_JUMP_TABLE_CORE (_bfd_nocore),
1015 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1016 BFD_JUMP_TABLE_SYMBOLS (ihex),
1017 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
1018 BFD_JUMP_TABLE_WRITE (ihex),
1019 BFD_JUMP_TABLE_LINK (ihex),
1020 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1021
1022 NULL,
1023
1024 NULL
1025 };