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252b5132 1/* BFD back-end for Intel Hex objects.
b3adc24a 2 Copyright (C) 1995-2020 Free Software Foundation, Inc.
252b5132
RH
3 Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>.
4
3d8dbe36 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
3d8dbe36
NC
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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
3d8dbe36 10 (at your option) any later version.
252b5132 11
3d8dbe36
NC
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.
252b5132 16
3d8dbe36
NC
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
cd123cb7
NC
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
252b5132
RH
22
23/* This is what Intel Hex files look like:
24
251. INTEL FORMATS
26
27A. 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
51B. 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
90Another 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
110The 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
116c20d2 120 20..21 Carriage return, line feed. */
252b5132 121
252b5132 122#include "sysdep.h"
3db64b00 123#include "bfd.h"
252b5132
RH
124#include "libbfd.h"
125#include "libiberty.h"
3882b010 126#include "safe-ctype.h"
252b5132 127
252b5132
RH
128/* The number of bytes we put on one line during output. */
129
65d7f9a6 130#define CHUNK 16
252b5132 131
3d8dbe36 132/* Macros for converting between hex and binary. */
252b5132 133
3d8dbe36 134#define NIBBLE(x) (hex_value (x))
252b5132
RH
135#define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
136#define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
3d8dbe36 137#define ISHEX(x) (hex_p (x))
252b5132
RH
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
142struct 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
152struct 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
160static void
116c20d2 161ihex_init (void)
252b5132 162{
b34976b6 163 static bfd_boolean inited;
252b5132
RH
164
165 if (! inited)
166 {
b34976b6 167 inited = TRUE;
252b5132
RH
168 hex_init ();
169 }
170}
171
172/* Create an ihex object. */
173
b34976b6 174static bfd_boolean
116c20d2 175ihex_mkobject (bfd *abfd)
252b5132 176{
487e54f2 177 struct ihex_data_struct *tdata;
252b5132 178
a50b1753 179 tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata));
487e54f2 180 if (tdata == NULL)
b34976b6 181 return FALSE;
487e54f2
AM
182
183 abfd->tdata.ihex_data = tdata;
184 tdata->head = NULL;
185 tdata->tail = NULL;
b34976b6 186 return TRUE;
252b5132
RH
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
192static INLINE int
116c20d2 193ihex_get_byte (bfd *abfd, bfd_boolean *errorptr)
252b5132
RH
194{
195 bfd_byte c;
196
dc810e39 197 if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1)
252b5132
RH
198 {
199 if (bfd_get_error () != bfd_error_file_truncated)
b34976b6 200 *errorptr = TRUE;
252b5132
RH
201 return EOF;
202 }
203
204 return (int) (c & 0xff);
205}
206
207/* Report a problem in an Intel Hex file. */
208
209static void
116c20d2 210ihex_bad_byte (bfd *abfd, unsigned int lineno, int c, bfd_boolean error)
252b5132
RH
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
3882b010 221 if (! ISPRINT (c))
7e27a9d5 222 sprintf (buf, "\\%03o", (unsigned int) c & 0xff);
252b5132
RH
223 else
224 {
225 buf[0] = c;
226 buf[1] = '\0';
227 }
4eca0228 228 _bfd_error_handler
695344c0 229 /* xgettext:c-format */
871b3ab2 230 (_("%pB:%d: unexpected character `%s' in Intel Hex file"),
d003868e 231 abfd, lineno, buf);
252b5132
RH
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
b34976b6 239static bfd_boolean
116c20d2 240ihex_scan (bfd *abfd)
252b5132
RH
241{
242 bfd_vma segbase;
243 bfd_vma extbase;
244 asection *sec;
dc810e39 245 unsigned int lineno;
b34976b6 246 bfd_boolean error;
252b5132
RH
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;
b34976b6 260 error = FALSE;
252b5132 261 bufsize = 0;
3d8dbe36 262
252b5132
RH
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;
7e27a9d5 280 unsigned char hdr[8];
252b5132
RH
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. */
252b5132
RH
289 pos = bfd_tell (abfd) - 1;
290
291 /* Read the header bytes. */
dc810e39 292 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8)
252b5132
RH
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. */
252b5132
RH
309 chars = len * 2 + 2;
310 if (chars >= bufsize)
311 {
a50b1753 312 buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars);
252b5132
RH
313 if (buf == NULL)
314 goto error_return;
315 bufsize = chars;
316 }
317
dc810e39 318 if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars)
252b5132
RH
319 goto error_return;
320
321 for (i = 0; i < chars; i++)
322 {
323 if (! ISHEX (buf[i]))
324 {
0102ea8c 325 ihex_bad_byte (abfd, lineno, buf[i], error);
252b5132
RH
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 {
4eca0228 336 _bfd_error_handler
695344c0 337 /* xgettext:c-format */
871b3ab2 338 (_("%pB:%u: bad checksum in Intel Hex file (expected %u, found %u)"),
d003868e 339 abfd, lineno,
252b5132
RH
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
eea6121a 350 && sec->vma + sec->size == extbase + segbase + addr)
252b5132
RH
351 {
352 /* This data goes at the end of the section we are
07d6d2b8 353 currently building. */
eea6121a 354 sec->size += len;
252b5132
RH
355 }
356 else if (len > 0)
357 {
358 char secbuf[20];
359 char *secname;
986f0783 360 size_t amt;
117ed4f8 361 flagword flags;
252b5132
RH
362
363 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
dc810e39 364 amt = strlen (secbuf) + 1;
a50b1753 365 secname = (char *) bfd_alloc (abfd, amt);
252b5132
RH
366 if (secname == NULL)
367 goto error_return;
368 strcpy (secname, secbuf);
117ed4f8
AM
369 flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
370 sec = bfd_make_section_with_flags (abfd, secname, flags);
252b5132
RH
371 if (sec == NULL)
372 goto error_return;
252b5132
RH
373 sec->vma = extbase + segbase + addr;
374 sec->lma = extbase + segbase + addr;
eea6121a 375 sec->size = len;
252b5132
RH
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;
c9594989 384 free (buf);
b34976b6 385 return TRUE;
252b5132
RH
386
387 case 2:
388 /* An extended address record. */
389 if (len != 2)
390 {
4eca0228 391 _bfd_error_handler
695344c0 392 /* xgettext:c-format */
871b3ab2 393 (_("%pB:%u: bad extended address record length in Intel Hex file"),
d003868e 394 abfd, lineno);
252b5132
RH
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 {
4eca0228 409 _bfd_error_handler
695344c0 410 /* xgettext:c-format */
871b3ab2 411 (_("%pB:%u: bad extended start address length in Intel Hex file"),
d003868e 412 abfd, lineno);
252b5132
RH
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 {
4eca0228 427 _bfd_error_handler
695344c0 428 /* xgettext:c-format */
871b3ab2 429 (_("%pB:%u: bad extended linear address record length in Intel Hex file"),
d003868e 430 abfd, lineno);
252b5132
RH
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 {
4eca0228 445 _bfd_error_handler
695344c0 446 /* xgettext:c-format */
871b3ab2 447 (_("%pB:%u: bad extended linear start address length in Intel Hex file"),
d003868e 448 abfd, lineno);
252b5132
RH
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:
4eca0228 463 _bfd_error_handler
695344c0 464 /* xgettext:c-format */
871b3ab2 465 (_("%pB:%u: unrecognized ihex type %u in Intel Hex file"),
d003868e 466 abfd, lineno, type);
252b5132
RH
467 bfd_set_error (bfd_error_bad_value);
468 goto error_return;
469 }
470 }
471 }
472
473 if (error)
474 goto error_return;
475
c9594989 476 free (buf);
b34976b6 477 return TRUE;
252b5132
RH
478
479 error_return:
c9594989 480 free (buf);
b34976b6 481 return FALSE;
252b5132
RH
482}
483
484/* Try to recognize an Intel Hex file. */
485
cb001c0d 486static bfd_cleanup
116c20d2 487ihex_object_p (bfd *abfd)
252b5132 488{
116c20d2 489 void * tdata_save;
252b5132
RH
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;
dc810e39 498 if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9)
252b5132
RH
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. */
487e54f2
AM
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 }
252b5132 536
cb001c0d 537 return _bfd_no_cleanup;
252b5132
RH
538}
539
540/* Read the contents of a section in an Intel Hex file. */
541
b34976b6 542static bfd_boolean
116c20d2 543ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents)
252b5132
RH
544{
545 int c;
546 bfd_byte *p;
547 bfd_byte *buf = NULL;
548 size_t bufsize;
b34976b6 549 bfd_boolean error;
252b5132
RH
550
551 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
552 goto error_return;
553
554 p = contents;
555 bufsize = 0;
b34976b6 556 error = FALSE;
252b5132
RH
557 while ((c = ihex_get_byte (abfd, &error)) != EOF)
558 {
7e27a9d5 559 unsigned char hdr[8];
252b5132 560 unsigned int len;
252b5132
RH
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
07d6d2b8 568 know the exact format. */
252b5132
RH
569 BFD_ASSERT (c == ':');
570
dc810e39 571 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8)
252b5132
RH
572 goto error_return;
573
574 len = HEX2 (hdr);
252b5132
RH
575 type = HEX2 (hdr + 6);
576
577 /* We should only see type 0 records here. */
578 if (type != 0)
579 {
4eca0228 580 _bfd_error_handler
871b3ab2 581 (_("%pB: internal error in ihex_read_section"), abfd);
252b5132
RH
582 bfd_set_error (bfd_error_bad_value);
583 goto error_return;
584 }
585
586 if (len * 2 > bufsize)
587 {
a50b1753 588 buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) len * 2);
252b5132
RH
589 if (buf == NULL)
590 goto error_return;
591 bufsize = len * 2;
592 }
593
dc810e39 594 if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2)
252b5132
RH
595 goto error_return;
596
597 for (i = 0; i < len; i++)
598 *p++ = HEX2 (buf + 2 * i);
eea6121a 599 if ((bfd_size_type) (p - contents) >= section->size)
252b5132
RH
600 {
601 /* We've read everything in the section. */
c9594989 602 free (buf);
b34976b6 603 return TRUE;
252b5132
RH
604 }
605
606 /* Skip the checksum. */
dc810e39 607 if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2)
252b5132
RH
608 goto error_return;
609 }
610
eea6121a 611 if ((bfd_size_type) (p - contents) < section->size)
252b5132 612 {
4eca0228 613 _bfd_error_handler
871b3ab2 614 (_("%pB: bad section length in ihex_read_section"), abfd);
252b5132
RH
615 bfd_set_error (bfd_error_bad_value);
616 goto error_return;
617 }
618
c9594989 619 free (buf);
b34976b6 620 return TRUE;
252b5132
RH
621
622 error_return:
c9594989 623 free (buf);
b34976b6 624 return FALSE;
252b5132
RH
625}
626
627/* Get the contents of a section in an Intel Hex file. */
628
b34976b6 629static bfd_boolean
116c20d2
NC
630ihex_get_section_contents (bfd *abfd,
631 asection *section,
632 void * location,
633 file_ptr offset,
634 bfd_size_type count)
252b5132
RH
635{
636 if (section->used_by_bfd == NULL)
637 {
eea6121a 638 section->used_by_bfd = bfd_alloc (abfd, section->size);
252b5132 639 if (section->used_by_bfd == NULL)
b34976b6 640 return FALSE;
a50b1753 641 if (! ihex_read_section (abfd, section,
07d6d2b8 642 (bfd_byte *) section->used_by_bfd))
b34976b6 643 return FALSE;
252b5132
RH
644 }
645
646 memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
647 (size_t) count);
648
b34976b6 649 return TRUE;
252b5132
RH
650}
651
652/* Set the contents of a section in an Intel Hex file. */
653
b34976b6 654static bfd_boolean
116c20d2
NC
655ihex_set_section_contents (bfd *abfd,
656 asection *section,
657 const void * location,
658 file_ptr offset,
659 bfd_size_type count)
252b5132
RH
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)
b34976b6 668 return TRUE;
252b5132 669
a50b1753 670 n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n));
252b5132 671 if (n == NULL)
b34976b6 672 return FALSE;
252b5132 673
a50b1753 674 data = (bfd_byte *) bfd_alloc (abfd, count);
252b5132 675 if (data == NULL)
b34976b6 676 return FALSE;
252b5132
RH
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 {
116c20d2 695 struct ihex_data_list **pp;
252b5132
RH
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
b34976b6 707 return TRUE;
252b5132
RH
708}
709
710/* Write a record out to an Intel Hex file. */
711
b34976b6 712static bfd_boolean
116c20d2
NC
713ihex_write_record (bfd *abfd,
714 size_t count,
715 unsigned int addr,
716 unsigned int type,
717 bfd_byte *data)
252b5132
RH
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;
dc810e39 724 size_t total;
252b5132
RH
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
dc810e39
AM
747 total = 9 + count * 2 + 4;
748 if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total)
b34976b6 749 return FALSE;
252b5132 750
b34976b6 751 return TRUE;
252b5132
RH
752}
753
754/* Write out an Intel Hex file. */
755
b34976b6 756static bfd_boolean
116c20d2 757ihex_write_object_contents (bfd *abfd)
252b5132
RH
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;
d2eb0fb5 772
a9859e01
AM
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 }
d2eb0fb5 791 where &= 0xffffffff;
a9859e01 792#endif
d2eb0fb5 793
252b5132
RH
794 p = l->data;
795 count = l->size;
116c20d2 796
252b5132
RH
797 while (count > 0)
798 {
dc810e39
AM
799 size_t now;
800 unsigned int rec_addr;
252b5132
RH
801
802 now = count;
dc810e39 803 if (count > CHUNK)
252b5132
RH
804 now = CHUNK;
805
6b5e16ff
AM
806 if (where < extbase
807 || where - extbase < segbase
808 || where - extbase - segbase > 0xffff)
252b5132
RH
809 {
810 bfd_byte addr[2];
811
812 /* We need a new base address. */
6b5e16ff 813 if (extbase == 0 && where <= 0xfffff)
252b5132 814 {
252b5132
RH
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))
b34976b6 819 return FALSE;
252b5132
RH
820 }
821 else
822 {
823 /* The extended address record and the extended
07d6d2b8
AM
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. */
252b5132
RH
829 if (segbase != 0)
830 {
831 addr[0] = 0;
832 addr[1] = 0;
833 if (! ihex_write_record (abfd, 2, 0, 2, addr))
b34976b6 834 return FALSE;
252b5132
RH
835 segbase = 0;
836 }
837
838 extbase = where & 0xffff0000;
839 if (where > extbase + 0xffff)
840 {
4eca0228 841 _bfd_error_handler
695344c0 842 /* xgettext:c-format */
2dcf00ce
AM
843 (_("%pB: address %#" PRIx64
844 " out of range for Intel Hex file"),
845 abfd, (uint64_t) where);
252b5132 846 bfd_set_error (bfd_error_bad_value);
b34976b6 847 return FALSE;
252b5132
RH
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))
b34976b6 852 return FALSE;
252b5132
RH
853 }
854 }
855
dc810e39 856 rec_addr = where - (extbase + segbase);
9e81ee67 857
07d6d2b8
AM
858 /* Output records shouldn't cross 64K boundaries. */
859 if (rec_addr + now > 0xffff)
860 now = 0x10000 - rec_addr;
9e81ee67 861
dc810e39 862 if (! ihex_write_record (abfd, now, rec_addr, 0, p))
b34976b6 863 return FALSE;
252b5132
RH
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))
b34976b6 885 return FALSE;
252b5132
RH
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))
b34976b6 894 return FALSE;
252b5132
RH
895 }
896 }
897
898 if (! ihex_write_record (abfd, 0, 0, 1, NULL))
b34976b6 899 return FALSE;
252b5132 900
b34976b6 901 return TRUE;
252b5132
RH
902}
903
252b5132
RH
904/* Set the architecture for the output file. The architecture is
905 irrelevant, so we ignore errors about unknown architectures. */
906
b34976b6 907static bfd_boolean
116c20d2
NC
908ihex_set_arch_mach (bfd *abfd,
909 enum bfd_architecture arch,
910 unsigned long mach)
252b5132
RH
911{
912 if (! bfd_default_set_arch_mach (abfd, arch, mach))
913 {
914 if (arch != bfd_arch_unknown)
b34976b6 915 return FALSE;
252b5132 916 }
b34976b6 917 return TRUE;
252b5132
RH
918}
919
920/* Get the size of the headers, for the linker. */
921
252b5132 922static int
a6b96beb
AM
923ihex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
924 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132
RH
925{
926 return 0;
927}
928
929/* Some random definitions for the target vector. */
930
07d6d2b8
AM
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
d00dd7dc
AM
935#define ihex_get_symtab_upper_bound _bfd_long_bfd_0
936#define ihex_canonicalize_symtab _bfd_nosymbols_canonicalize_symtab
07d6d2b8
AM
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
60bb06bc 940#define ihex_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
d00dd7dc 941#define ihex_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
07d6d2b8
AM
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_line _bfd_nosymbols_find_line
946#define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info
947#define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
948#define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
949#define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
950#define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
951#define ihex_bfd_relax_section bfd_generic_relax_section
952#define ihex_bfd_gc_sections bfd_generic_gc_sections
953#define ihex_bfd_lookup_section_flags bfd_generic_lookup_section_flags
954#define ihex_bfd_merge_sections bfd_generic_merge_sections
955#define ihex_bfd_is_group_section bfd_generic_is_group_section
cb7f4b29 956#define ihex_bfd_group_name bfd_generic_group_name
07d6d2b8
AM
957#define ihex_bfd_discard_group bfd_generic_discard_group
958#define ihex_section_already_linked _bfd_generic_section_already_linked
959#define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol
34a87bb0 960#define ihex_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
07d6d2b8
AM
961#define ihex_bfd_define_start_stop bfd_generic_define_start_stop
962#define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
963#define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
964#define ihex_bfd_link_just_syms _bfd_generic_link_just_syms
965#define ihex_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
966#define ihex_bfd_final_link _bfd_generic_final_link
967#define ihex_bfd_link_split_section _bfd_generic_link_split_section
968#define ihex_bfd_link_check_relocs _bfd_generic_link_check_relocs
252b5132
RH
969
970/* The Intel Hex target vector. */
971
972const bfd_target ihex_vec =
973{
116c20d2 974 "ihex", /* Name. */
252b5132 975 bfd_target_ihex_flavour,
116c20d2
NC
976 BFD_ENDIAN_UNKNOWN, /* Target byte order. */
977 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
978 0, /* Object flags. */
979 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */
980 0, /* Leading underscore. */
981 ' ', /* AR_pad_char. */
982 16, /* AR_max_namelen. */
0aabe54e 983 0, /* match priority. */
252b5132
RH
984 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
985 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
116c20d2 986 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
252b5132
RH
987 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
988 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
116c20d2 989 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
252b5132
RH
990
991 {
992 _bfd_dummy_target,
116c20d2 993 ihex_object_p, /* bfd_check_format. */
252b5132
RH
994 _bfd_dummy_target,
995 _bfd_dummy_target,
996 },
997 {
d00dd7dc 998 _bfd_bool_bfd_false_error,
252b5132
RH
999 ihex_mkobject,
1000 _bfd_generic_mkarchive,
d00dd7dc 1001 _bfd_bool_bfd_false_error,
252b5132 1002 },
116c20d2 1003 { /* bfd_write_contents. */
d00dd7dc 1004 _bfd_bool_bfd_false_error,
252b5132
RH
1005 ihex_write_object_contents,
1006 _bfd_write_archive_contents,
d00dd7dc 1007 _bfd_bool_bfd_false_error,
252b5132
RH
1008 },
1009
1010 BFD_JUMP_TABLE_GENERIC (ihex),
1011 BFD_JUMP_TABLE_COPY (_bfd_generic),
1012 BFD_JUMP_TABLE_CORE (_bfd_nocore),
1013 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1014 BFD_JUMP_TABLE_SYMBOLS (ihex),
72f6ea61 1015 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
252b5132
RH
1016 BFD_JUMP_TABLE_WRITE (ihex),
1017 BFD_JUMP_TABLE_LINK (ihex),
1018 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1019
c3c89269 1020 NULL,
dc810e39 1021
116c20d2 1022 NULL
252b5132 1023};