ihex.c revision 1.1.1.11 1 /* BFD back-end for Intel Hex objects.
2 Copyright (C) 1995-2025 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor of Cygnus Support <ian (at) 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_read (&c, 1, abfd) != 1)
198 {
199 if (bfd_get_error () != bfd_error_file_truncated)
200 *errorptr = true;
201 return EOF;
202 }
203
204 return 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, 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_read (hdr, 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_realloc (buf, chars);
313 if (buf == NULL)
314 goto error_return;
315 bufsize = chars;
316 }
317
318 if (bfd_read (buf, 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 bfd_byte b[9];
490 unsigned int i;
491 unsigned int type;
492
493 ihex_init ();
494
495 if (bfd_seek (abfd, 0, SEEK_SET) != 0)
496 return NULL;
497 if (bfd_read (b, 9, abfd) != 9)
498 {
499 if (bfd_get_error () == bfd_error_file_truncated)
500 bfd_set_error (bfd_error_wrong_format);
501 return NULL;
502 }
503
504 if (b[0] != ':')
505 {
506 bfd_set_error (bfd_error_wrong_format);
507 return NULL;
508 }
509
510 for (i = 1; i < 9; i++)
511 {
512 if (! ISHEX (b[i]))
513 {
514 bfd_set_error (bfd_error_wrong_format);
515 return NULL;
516 }
517 }
518
519 type = HEX2 (b + 7);
520 if (type > 5)
521 {
522 bfd_set_error (bfd_error_wrong_format);
523 return NULL;
524 }
525
526 /* OK, it looks like it really is an Intel Hex file. */
527 if (!ihex_mkobject (abfd))
528 return NULL;
529
530 if (!ihex_scan (abfd))
531 {
532 bfd_release (abfd, abfd->tdata.any);
533 return NULL;
534 }
535
536 return _bfd_no_cleanup;
537 }
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 {
544 int c;
545 bfd_byte *p;
546 bfd_byte *buf = NULL;
547 size_t bufsize;
548 bool error;
549
550 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
551 goto error_return;
552
553 p = contents;
554 bufsize = 0;
555 error = false;
556 while ((c = ihex_get_byte (abfd, &error)) != EOF)
557 {
558 unsigned char hdr[8];
559 unsigned int len;
560 unsigned int type;
561 unsigned int i;
562
563 if (c == '\r' || c == '\n')
564 continue;
565
566 /* This is called after ihex_scan has succeeded, so we ought to
567 know the exact format. */
568 BFD_ASSERT (c == ':');
569
570 if (bfd_read (hdr, 8, abfd) != 8)
571 goto error_return;
572
573 len = HEX2 (hdr);
574 type = HEX2 (hdr + 6);
575
576 /* We should only see type 0 records here. */
577 if (type != 0)
578 {
579 _bfd_error_handler
580 (_("%pB: internal error in ihex_read_section"), abfd);
581 bfd_set_error (bfd_error_bad_value);
582 goto error_return;
583 }
584
585 if (len * 2 > bufsize)
586 {
587 buf = bfd_realloc (buf, len * 2);
588 if (buf == NULL)
589 goto error_return;
590 bufsize = len * 2;
591 }
592
593 if (bfd_read (buf, len * 2, abfd) != len * 2)
594 goto error_return;
595
596 for (i = 0; i < len; i++)
597 *p++ = HEX2 (buf + 2 * i);
598 if ((bfd_size_type) (p - contents) >= section->size)
599 {
600 /* We've read everything in the section. */
601 free (buf);
602 return true;
603 }
604
605 /* Skip the checksum. */
606 if (bfd_read (buf, 2, abfd) != 2)
607 goto error_return;
608 }
609
610 if ((bfd_size_type) (p - contents) < section->size)
611 {
612 _bfd_error_handler
613 (_("%pB: bad section length in ihex_read_section"), abfd);
614 bfd_set_error (bfd_error_bad_value);
615 goto error_return;
616 }
617
618 free (buf);
619 return true;
620
621 error_return:
622 free (buf);
623 return false;
624 }
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 {
635 if (section->used_by_bfd == NULL)
636 {
637 section->used_by_bfd = bfd_alloc (abfd, section->size);
638 if (section->used_by_bfd == NULL)
639 return false;
640 if (! ihex_read_section (abfd, section,
641 (bfd_byte *) section->used_by_bfd))
642 return false;
643 }
644
645 memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
646 (size_t) count);
647
648 return true;
649 }
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 {
660 struct ihex_data_list *n;
661 bfd_byte *data;
662 struct ihex_data_struct *tdata;
663
664 if (count == 0
665 || (section->flags & SEC_ALLOC) == 0
666 || (section->flags & SEC_LOAD) == 0)
667 return true;
668
669 n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n));
670 if (n == NULL)
671 return false;
672
673 data = (bfd_byte *) bfd_alloc (abfd, count);
674 if (data == NULL)
675 return false;
676 memcpy (data, location, (size_t) count);
677
678 n->data = data;
679 n->where = section->lma + offset;
680 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 tdata = abfd->tdata.ihex_data;
685 if (tdata->tail != NULL
686 && n->where >= tdata->tail->where)
687 {
688 tdata->tail->next = n;
689 n->next = NULL;
690 tdata->tail = n;
691 }
692 else
693 {
694 struct ihex_data_list **pp;
695
696 for (pp = &tdata->head;
697 *pp != NULL && (*pp)->where < n->where;
698 pp = &(*pp)->next)
699 ;
700 n->next = *pp;
701 *pp = n;
702 if (n->next == NULL)
703 tdata->tail = n;
704 }
705
706 return true;
707 }
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 {
718 static const char digs[] = "0123456789ABCDEF";
719 char buf[9 + CHUNK * 2 + 4];
720 char *p;
721 unsigned int chksum;
722 unsigned int i;
723 size_t total;
724
725 #define TOHEX(buf, v) \
726 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
727
728 buf[0] = ':';
729 TOHEX (buf + 1, count);
730 TOHEX (buf + 3, (addr >> 8) & 0xff);
731 TOHEX (buf + 5, addr & 0xff);
732 TOHEX (buf + 7, type);
733
734 chksum = count + addr + (addr >> 8) + type;
735
736 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
737 {
738 TOHEX (p, *data);
739 chksum += *data;
740 }
741
742 TOHEX (p, (- chksum) & 0xff);
743 p[2] = '\r';
744 p[3] = '\n';
745
746 total = 9 + count * 2 + 4;
747 if (bfd_write (buf, total, abfd) != total)
748 return false;
749
750 return true;
751 }
752
753 /* Write out an Intel Hex file. */
754
755 static bool
756 ihex_write_object_contents (bfd *abfd)
757 {
758 bfd_vma segbase;
759 bfd_vma extbase;
760 struct ihex_data_list *l;
761
762 segbase = 0;
763 extbase = 0;
764 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
765 {
766 bfd_vma where;
767 bfd_byte *p;
768 bfd_size_type count;
769
770 where = l->where;
771
772 #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 if (where > 0xffffffff
780 && where + 0x80000000 > 0xffffffff)
781 {
782 _bfd_error_handler
783 /* xgettext:c-format */
784 (_("%pB 64-bit address %#" PRIx64
785 " out of range for Intel Hex file"),
786 abfd, (uint64_t) where);
787 bfd_set_error (bfd_error_bad_value);
788 return false;
789 }
790 where &= 0xffffffff;
791 #endif
792
793 p = l->data;
794 count = l->size;
795
796 while (count > 0)
797 {
798 size_t now;
799 unsigned int rec_addr;
800
801 now = count;
802 if (count > CHUNK)
803 now = CHUNK;
804
805 if (where < extbase
806 || where - extbase < segbase
807 || where - extbase - segbase > 0xffff)
808 {
809 bfd_byte addr[2];
810
811 /* We need a new base address. */
812 if (extbase == 0 && where <= 0xfffff)
813 {
814 segbase = where & 0xf0000;
815 addr[0] = (bfd_byte)(segbase >> 12) & 0xff;
816 addr[1] = (bfd_byte)(segbase >> 4) & 0xff;
817 if (! ihex_write_record (abfd, 2, 0, 2, addr))
818 return false;
819 }
820 else
821 {
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 if (segbase != 0)
829 {
830 addr[0] = 0;
831 addr[1] = 0;
832 if (! ihex_write_record (abfd, 2, 0, 2, addr))
833 return false;
834 segbase = 0;
835 }
836
837 extbase = where & 0xffff0000;
838 if (where > extbase + 0xffff)
839 {
840 _bfd_error_handler
841 /* xgettext:c-format */
842 (_("%pB: address %#" PRIx64
843 " out of range for Intel Hex file"),
844 abfd, (uint64_t) where);
845 bfd_set_error (bfd_error_bad_value);
846 return false;
847 }
848 addr[0] = (bfd_byte)(extbase >> 24) & 0xff;
849 addr[1] = (bfd_byte)(extbase >> 16) & 0xff;
850 if (! ihex_write_record (abfd, 2, 0, 4, addr))
851 return false;
852 }
853 }
854
855 rec_addr = where - (extbase + segbase);
856
857 /* Output records shouldn't cross 64K boundaries. */
858 if (rec_addr + now > 0xffff)
859 now = 0x10000 - rec_addr;
860
861 if (! ihex_write_record (abfd, now, rec_addr, 0, p))
862 return false;
863
864 where += now;
865 p += now;
866 count -= now;
867 }
868 }
869
870 if (abfd->start_address != 0)
871 {
872 bfd_vma start;
873 bfd_byte startbuf[4];
874
875 start = abfd->start_address;
876
877 if (start <= 0xfffff)
878 {
879 startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
880 startbuf[1] = 0;
881 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
882 startbuf[3] = (bfd_byte)start & 0xff;
883 if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
884 return false;
885 }
886 else
887 {
888 startbuf[0] = (bfd_byte)(start >> 24) & 0xff;
889 startbuf[1] = (bfd_byte)(start >> 16) & 0xff;
890 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
891 startbuf[3] = (bfd_byte)start & 0xff;
892 if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
893 return false;
894 }
895 }
896
897 if (! ihex_write_record (abfd, 0, 0, 1, NULL))
898 return false;
899
900 return true;
901 }
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 {
911 if (! bfd_default_set_arch_mach (abfd, arch, mach))
912 {
913 if (arch != bfd_arch_unknown)
914 return false;
915 }
916 return true;
917 }
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_merge_sections bfd_generic_merge_sections
930 #define ihex_bfd_is_group_section bfd_generic_is_group_section
931 #define ihex_bfd_group_name bfd_generic_group_name
932 #define ihex_bfd_discard_group bfd_generic_discard_group
933 #define ihex_section_already_linked _bfd_generic_section_already_linked
934 #define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol
935 #define ihex_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
936 #define ihex_bfd_define_start_stop bfd_generic_define_start_stop
937 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
938 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
939 #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms
940 #define ihex_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
941 #define ihex_bfd_final_link _bfd_generic_final_link
942 #define ihex_bfd_link_split_section _bfd_generic_link_split_section
943 #define ihex_bfd_link_check_relocs _bfd_generic_link_check_relocs
944
945 /* The Intel Hex target vector. */
946
947 const bfd_target ihex_vec =
948 {
949 "ihex", /* Name. */
950 bfd_target_ihex_flavour,
951 BFD_ENDIAN_UNKNOWN, /* Target byte order. */
952 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
953 0, /* Object flags. */
954 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */
955 0, /* Leading underscore. */
956 ' ', /* AR_pad_char. */
957 16, /* AR_max_namelen. */
958 0, /* match priority. */
959 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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 };
1000