* binary.c (binary_set_section_contents): Don't return early for a
[deliverable/binutils-gdb.git] / bfd / ihex.c
1 /* BFD back-end for Intel Hex objects.
2 Copyright 1995 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 /* This is what Intel Hex files look like:
22
23 1. INTEL FORMATS
24
25 A. Intel 1
26
27 16-bit address-field format, for files 64k bytes in length or less.
28
29 DATA RECORD
30 Byte 1 Header = colon(:)
31 2..3 The number of data bytes in hex notation
32 4..5 High byte of the record load address
33 6..7 Low byte of the record load address
34 8..9 Record type, must be "00"
35 10..x Data bytes in hex notation:
36 x = (number of bytes - 1) * 2 + 11
37 x+1..x+2 Checksum in hex notation
38 x+3..x+4 Carriage return, line feed
39
40 END RECORD
41 Byte 1 Header = colon (:)
42 2..3 The byte count, must be "00"
43 4..7 Transfer-address (usually "0000")
44 the jump-to address, execution start address
45 8..9 Record type, must be "01"
46 10..11 Checksum, in hex notation
47 12..13 Carriage return, line feed
48
49 B. INTEL 2
50
51 MCS-86 format, using a 20-bit address for files larger than 64K bytes.
52
53 DATA RECORD
54 Byte 1 Header = colon (:)
55 2..3 The byte count of this record, hex notation
56 4..5 High byte of the record load address
57 6..7 Low byte of the record load address
58 8..9 Record type, must be "00"
59 10..x The data bytes in hex notation:
60 x = (number of data bytes - 1) * 2 + 11
61 x+1..x+2 Checksum in hex notation
62 x+3..x+4 Carriage return, line feed
63
64 EXTENDED ADDRESS RECORD
65 Byte 1 Header = colon(:)
66 2..3 The byte count, must be "02"
67 4..7 Load address, must be "0000"
68 8..9 Record type, must be "02"
69 10..11 High byte of the offset address
70 12..13 Low byte of the offset address
71 14..15 Checksum in hex notation
72 16..17 Carriage return, line feed
73
74 The checksums are the two's complement of the 8-bit sum
75 without carry of the byte count, offset address, and the
76 record type.
77
78 START ADDRESS RECORD
79 Byte 1 Header = colon (:)
80 2..3 The byte count, must be "04"
81 4..7 Load address, must be "0000"
82 8..9 Record type, must be "03"
83 10..13 8086 CS value
84 14..17 8086 IP value
85 18..19 Checksum in hex notation
86 20..21 Carriage return, line feed
87
88 Another document reports these additional types:
89
90 EXTENDED LINEAR ADDRESS RECORD
91 Byte 1 Header = colon (:)
92 2..3 The byte count, must be "02"
93 4..7 Load address, must be "0000"
94 8..9 Record type, must be "04"
95 10..13 Upper 16 bits of address of subsequent records
96 14..15 Checksum in hex notation
97 16..17 Carriage return, line feed
98
99 START LINEAR ADDRESS RECORD
100 Byte 1 Header = colon (:)
101 2..3 The byte count, must be "02"
102 4..7 Load address, must be "0000"
103 8..9 Record type, must be "05"
104 10..13 Upper 16 bits of start address
105 14..15 Checksum in hex notation
106 16..17 Carriage return, line feed
107
108 The MRI compiler uses this, which is a repeat of type 5:
109
110 EXTENDED START RECORD
111 Byte 1 Header = colon (:)
112 2..3 The byte count, must be "04"
113 4..7 Load address, must be "0000"
114 8..9 Record type, must be "05"
115 10..13 Upper 16 bits of start address
116 14..17 Lower 16 bits of start address
117 18..19 Checksum in hex notation
118 20..21 Carriage return, line feed
119 */
120
121 #include "bfd.h"
122 #include "sysdep.h"
123 #include "libbfd.h"
124 #include "libiberty.h"
125
126 #include <ctype.h>
127
128 static void ihex_init PARAMS ((void));
129 static boolean ihex_mkobject PARAMS ((bfd *));
130 static INLINE int ihex_get_byte PARAMS ((bfd *, boolean *));
131 static void ihex_bad_byte PARAMS ((bfd *, unsigned int, int, boolean));
132 static boolean ihex_scan PARAMS ((bfd *));
133 static const bfd_target *ihex_object_p PARAMS ((bfd *));
134 static boolean ihex_read_section PARAMS ((bfd *, asection *, bfd_byte *));
135 static boolean ihex_get_section_contents
136 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
137 static boolean ihex_set_section_contents
138 PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
139 static boolean ihex_write_record
140 PARAMS ((bfd *, bfd_size_type, bfd_vma, unsigned int, bfd_byte *));
141 static boolean ihex_write_object_contents PARAMS ((bfd *));
142 static asymbol *ihex_make_empty_symbol PARAMS ((bfd *));
143 static boolean ihex_set_arch_mach
144 PARAMS ((bfd *, enum bfd_architecture, unsigned long));
145
146 /* The number of bytes we put on one line during output. */
147
148 #define CHUNK (21)
149
150 /* Macros for converting between hex and binary. */
151
152 #define NIBBLE(x) (hex_value (x))
153 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
154 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
155 #define ISHEX(x) (hex_p (x))
156
157 /* When we write out an ihex value, the values can not be output as
158 they are seen. Instead, we hold them in memory in this structure. */
159
160 struct ihex_data_list
161 {
162 struct ihex_data_list *next;
163 bfd_byte *data;
164 bfd_vma where;
165 bfd_size_type size;
166 };
167
168 /* The ihex tdata information. */
169
170 struct ihex_data_struct
171 {
172 struct ihex_data_list *head;
173 struct ihex_data_list *tail;
174 };
175
176 /* Initialize by filling in the hex conversion array. */
177
178 static void
179 ihex_init ()
180 {
181 static boolean inited;
182
183 if (! inited)
184 {
185 inited = true;
186 hex_init ();
187 }
188 }
189
190 /* Create an ihex object. */
191
192 static boolean
193 ihex_mkobject (abfd)
194 bfd *abfd;
195 {
196 if (abfd->tdata.ihex_data == NULL)
197 {
198 struct ihex_data_struct *tdata;
199
200 tdata = ((struct ihex_data_struct *)
201 bfd_alloc (abfd, sizeof (struct ihex_data_struct)));
202 if (tdata == NULL)
203 return false;
204 abfd->tdata.ihex_data = tdata;
205 tdata->head = NULL;
206 tdata->tail = NULL;
207 }
208
209 return true;
210 }
211
212 /* Read a byte from a BFD. Set *ERRORPTR if an error occurred.
213 Return EOF on error or end of file. */
214
215 static INLINE int
216 ihex_get_byte (abfd, errorptr)
217 bfd *abfd;
218 boolean *errorptr;
219 {
220 bfd_byte c;
221
222 if (bfd_read (&c, 1, 1, abfd) != 1)
223 {
224 if (bfd_get_error () != bfd_error_file_truncated)
225 *errorptr = true;
226 return EOF;
227 }
228
229 return (int) (c & 0xff);
230 }
231
232 /* Report a problem in an Intel Hex file. */
233
234 static void
235 ihex_bad_byte (abfd, lineno, c, error)
236 bfd *abfd;
237 unsigned int lineno;
238 int c;
239 boolean error;
240 {
241 if (c == EOF)
242 {
243 if (! error)
244 bfd_set_error (bfd_error_file_truncated);
245 }
246 else
247 {
248 char buf[10];
249
250 if (! isprint (c))
251 sprintf (buf, "\\%03o", (unsigned int) c);
252 else
253 {
254 buf[0] = c;
255 buf[1] = '\0';
256 }
257 (*_bfd_error_handler)
258 ("%s:%d: unexpected character `%s' in Intel Hex file\n",
259 bfd_get_filename (abfd), lineno, buf);
260 bfd_set_error (bfd_error_bad_value);
261 }
262 }
263
264 /* Read an Intel hex file and turn it into sections. We create a new
265 section for each contiguous set of bytes. */
266
267 static boolean
268 ihex_scan (abfd)
269 bfd *abfd;
270 {
271 bfd_vma segbase;
272 asection *sec;
273 int lineno;
274 boolean error;
275 bfd_byte *buf;
276 size_t bufsize;
277 int c;
278
279 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
280 goto error_return;
281
282 abfd->start_address = 0;
283
284 segbase = 0;
285 sec = NULL;
286 lineno = 1;
287 error = false;
288 buf = NULL;
289 bufsize = 0;
290 while ((c = ihex_get_byte (abfd, &error)) != EOF)
291 {
292 if (c == '\r')
293 continue;
294 else if (c == '\n')
295 {
296 ++lineno;
297 continue;
298 }
299 else if (c != ':')
300 {
301 ihex_bad_byte (abfd, lineno, c, error);
302 goto error_return;
303 }
304 else
305 {
306 file_ptr pos;
307 char hdr[8];
308 unsigned int i;
309 unsigned int len;
310 bfd_vma addr;
311 unsigned int type;
312 unsigned int chars;
313 unsigned int chksum;
314
315 /* This is a data record. */
316
317 pos = bfd_tell (abfd) - 1;
318
319 /* Read the header bytes. */
320
321 if (bfd_read (hdr, 1, 8, abfd) != 8)
322 goto error_return;
323
324 for (i = 0; i < 8; i++)
325 {
326 if (! ISHEX (hdr[i]))
327 {
328 ihex_bad_byte (abfd, lineno, hdr[i], error);
329 goto error_return;
330 }
331 }
332
333 len = HEX2 (hdr);
334 addr = HEX4 (hdr + 2);
335 type = HEX2 (hdr + 6);
336
337 /* Read the data bytes. */
338
339 chars = len * 2 + 2;
340 if (chars >= bufsize)
341 {
342 buf = (bfd_byte *) bfd_realloc (buf, chars);
343 if (buf == NULL)
344 goto error_return;
345 bufsize = chars;
346 }
347
348 if (bfd_read (buf, 1, chars, abfd) != chars)
349 goto error_return;
350
351 for (i = 0; i < chars; i++)
352 {
353 if (! ISHEX (buf[i]))
354 {
355 ihex_bad_byte (abfd, lineno, hdr[i], error);
356 goto error_return;
357 }
358 }
359
360 /* Check the checksum. */
361 chksum = len + addr + (addr >> 8) + type;
362 for (i = 0; i < len; i++)
363 chksum += HEX2 (buf + 2 * i);
364 if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
365 {
366 (*_bfd_error_handler)
367 ("%s:%d: bad checksum in Intel Hex file (expected %u, found %u)",
368 bfd_get_filename (abfd), lineno,
369 (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
370 bfd_set_error (bfd_error_bad_value);
371 goto error_return;
372 }
373
374 switch (type)
375 {
376 case 0:
377 /* This is a data record. */
378 if (sec != NULL
379 && sec->vma + sec->_raw_size == segbase + addr)
380 {
381 /* This data goes at the end of the section we are
382 currently building. */
383 sec->_raw_size += len;
384 }
385 else if (len > 0)
386 {
387 char secbuf[20];
388 char *secname;
389
390 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
391 secname = (char *) bfd_alloc (abfd, strlen (secbuf) + 1);
392 if (secname == NULL)
393 goto error_return;
394 strcpy (secname, secbuf);
395 sec = bfd_make_section (abfd, secname);
396 if (sec == NULL)
397 goto error_return;
398 sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
399 sec->vma = segbase + addr;
400 sec->lma = segbase + addr;
401 sec->_raw_size = len;
402 sec->filepos = pos;
403 }
404 break;
405
406 case 1:
407 /* An end record. */
408 if (abfd->start_address == 0)
409 abfd->start_address = addr;
410 if (buf != NULL)
411 free (buf);
412 return true;
413
414 case 2:
415 /* An extended address record. */
416 if (len != 2)
417 {
418 (*_bfd_error_handler)
419 ("%s:%d: bad extended address record length in Intel Hex file",
420 bfd_get_filename (abfd), lineno);
421 bfd_set_error (bfd_error_bad_value);
422 goto error_return;
423 }
424
425 segbase = HEX4 (buf) << 4;
426
427 sec = NULL;
428
429 break;
430
431 case 3:
432 /* An extended start address record. */
433 if (len != 4)
434 {
435 (*_bfd_error_handler)
436 ("%s:%d: bad extended start address length in Intel Hex file",
437 bfd_get_filename (abfd), lineno);
438 bfd_set_error (bfd_error_bad_value);
439 goto error_return;
440 }
441
442 abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
443
444 sec = NULL;
445
446 break;
447
448 case 4:
449 /* An extended linear address record. */
450 if (len != 2)
451 {
452 (*_bfd_error_handler)
453 ("%s:%d: bad extended linear address record length in Intel Hex file",
454 bfd_get_filename (abfd), lineno);
455 bfd_set_error (bfd_error_bad_value);
456 goto error_return;
457 }
458
459 segbase = HEX4 (buf) << 16;
460
461 sec = NULL;
462
463 break;
464
465 case 5:
466 /* An extended linear start address record. */
467 if (len != 2 && len != 4)
468 {
469 (*_bfd_error_handler)
470 ("%s:%d: bad extended linear start address length in Intel Hex file",
471 bfd_get_filename (abfd), lineno);
472 bfd_set_error (bfd_error_bad_value);
473 goto error_return;
474 }
475
476 if (len == 2)
477 abfd->start_address += HEX4 (buf) << 16;
478 else
479 abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
480
481 sec = NULL;
482
483 break;
484
485 default:
486 (*_bfd_error_handler)
487 ("%s:%d: unrecognized ihex type %u in Intel Hex file\n",
488 bfd_get_filename (abfd), lineno, type);
489 bfd_set_error (bfd_error_bad_value);
490 goto error_return;
491 }
492 }
493 }
494
495 if (error)
496 goto error_return;
497
498 if (buf != NULL)
499 free (buf);
500
501 return true;
502
503 error_return:
504 if (buf != NULL)
505 free (buf);
506 return false;
507 }
508
509 /* Try to recognize an Intel Hex file. */
510
511 static const bfd_target *
512 ihex_object_p (abfd)
513 bfd *abfd;
514 {
515 bfd_byte b[9];
516 unsigned int i;
517 unsigned int type;
518
519 ihex_init ();
520
521 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
522 return NULL;
523 if (bfd_read (b, 1, 9, abfd) != 9)
524 {
525 if (bfd_get_error () == bfd_error_file_truncated)
526 bfd_set_error (bfd_error_wrong_format);
527 return NULL;
528 }
529
530 if (b[0] != ':')
531 {
532 bfd_set_error (bfd_error_wrong_format);
533 return NULL;
534 }
535
536 for (i = 1; i < 9; i++)
537 {
538 if (! ISHEX (b[i]))
539 {
540 bfd_set_error (bfd_error_wrong_format);
541 return NULL;
542 }
543 }
544
545 type = HEX2 (b + 7);
546 if (type > 5)
547 {
548 bfd_set_error (bfd_error_wrong_format);
549 return NULL;
550 }
551
552 /* OK, it looks like it really is an Intel Hex file. */
553
554 if (! ihex_mkobject (abfd)
555 || ! ihex_scan (abfd))
556 return NULL;
557
558 return abfd->xvec;
559 }
560
561 /* Read the contents of a section in an Intel Hex file. */
562
563 static boolean
564 ihex_read_section (abfd, section, contents)
565 bfd *abfd;
566 asection *section;
567 bfd_byte *contents;
568 {
569 int c;
570 bfd_byte *p;
571 bfd_byte *buf;
572 size_t bufsize;
573 boolean error;
574
575 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
576 goto error_return;
577
578 p = contents;
579 buf = NULL;
580 bufsize = 0;
581 error = false;
582 while ((c = ihex_get_byte (abfd, &error)) != EOF)
583 {
584 char hdr[8];
585 unsigned int len;
586 bfd_vma addr;
587 unsigned int type;
588 unsigned int i;
589
590 if (c == '\r' || c == '\n')
591 continue;
592
593 /* This is called after ihex_scan has succeeded, so we ought to
594 know the exact format. */
595 BFD_ASSERT (c == ':');
596
597 if (bfd_read (hdr, 1, 8, abfd) != 8)
598 goto error_return;
599
600 len = HEX2 (hdr);
601 addr = HEX4 (hdr + 2);
602 type = HEX2 (hdr + 6);
603
604 /* We should only see type 0 records here. */
605 if (type != 0)
606 {
607 (*_bfd_error_handler)
608 ("%s: internal error in ihex_read_section",
609 bfd_get_filename (abfd));
610 bfd_set_error (bfd_error_bad_value);
611 goto error_return;
612 }
613
614 if (len * 2 > bufsize)
615 {
616 buf = (bfd_byte *) bfd_realloc (buf, len * 2);
617 if (buf == NULL)
618 goto error_return;
619 bufsize = len * 2;
620 }
621
622 if (bfd_read (buf, 1, len * 2, abfd) != len * 2)
623 goto error_return;
624
625 for (i = 0; i < len; i++)
626 *p++ = HEX2 (buf + 2 * i);
627 if ((bfd_size_type) (p - contents) >= section->_raw_size)
628 {
629 /* We've read everything in the section. */
630 if (buf != NULL)
631 free (buf);
632 return true;
633 }
634
635 /* Skip the checksum. */
636 if (bfd_read (buf, 1, 2, abfd) != 2)
637 goto error_return;
638 }
639
640 if ((bfd_size_type) (p - contents) < section->_raw_size)
641 {
642 (*_bfd_error_handler)
643 ("%s: bad section length in ihex_read_section",
644 bfd_get_filename (abfd));
645 bfd_set_error (bfd_error_bad_value);
646 goto error_return;
647 }
648
649 if (buf != NULL)
650 free (buf);
651
652 return true;
653
654 error_return:
655 if (buf != NULL)
656 free (buf);
657 return false;
658 }
659
660 /* Get the contents of a section in an Intel Hex file. */
661
662 static boolean
663 ihex_get_section_contents (abfd, section, location, offset, count)
664 bfd *abfd;
665 asection *section;
666 PTR location;
667 file_ptr offset;
668 bfd_size_type count;
669 {
670 if (section->used_by_bfd == NULL)
671 {
672 section->used_by_bfd = bfd_alloc (abfd, section->_raw_size);
673 if (section->used_by_bfd == NULL)
674 return false;
675 if (! ihex_read_section (abfd, section, section->used_by_bfd))
676 return false;
677 }
678
679 memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
680 (size_t) count);
681
682 return true;
683 }
684
685 /* Set the contents of a section in an Intel Hex file. */
686
687 static boolean
688 ihex_set_section_contents (abfd, section, location, offset, count)
689 bfd *abfd;
690 asection *section;
691 PTR location;
692 file_ptr offset;
693 bfd_size_type count;
694 {
695 struct ihex_data_list *n;
696 bfd_byte *data;
697 struct ihex_data_struct *tdata;
698
699 if (count == 0
700 || (section->flags & SEC_ALLOC) == 0
701 || (section->flags & SEC_LOAD) == 0)
702 return true;
703
704 n = ((struct ihex_data_list *)
705 bfd_alloc (abfd, sizeof (struct ihex_data_list)));
706 if (n == NULL)
707 return false;
708
709 data = (bfd_byte *) bfd_alloc (abfd, count);
710 if (data == NULL)
711 return false;
712 memcpy (data, location, (size_t) count);
713
714 n->data = data;
715 n->where = section->lma + offset;
716 n->size = count;
717
718 /* Sort the records by address. Optimize for the common case of
719 adding a record to the end of the list. */
720 tdata = abfd->tdata.ihex_data;
721 if (tdata->tail != NULL
722 && n->where >= tdata->tail->where)
723 {
724 tdata->tail->next = n;
725 n->next = NULL;
726 tdata->tail = n;
727 }
728 else
729 {
730 register struct ihex_data_list **pp;
731
732 for (pp = &tdata->head;
733 *pp != NULL && (*pp)->where < n->where;
734 pp = &(*pp)->next)
735 ;
736 n->next = *pp;
737 *pp = n;
738 if (n->next == NULL)
739 tdata->tail = n;
740 }
741
742 return true;
743 }
744
745 /* Write a record out to an Intel Hex file. */
746
747 static boolean
748 ihex_write_record (abfd, count, addr, type, data)
749 bfd *abfd;
750 bfd_size_type count;
751 bfd_vma addr;
752 unsigned int type;
753 bfd_byte *data;
754 {
755 static const char digs[] = "0123456789ABCDEF";
756 char buf[9 + CHUNK * 2 + 4];
757 char *p;
758 unsigned int chksum;
759 unsigned int i;
760
761 #define TOHEX(buf, v) \
762 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
763
764 buf[0] = ':';
765 TOHEX (buf + 1, count);
766 TOHEX (buf + 3, (addr >> 8) & 0xff);
767 TOHEX (buf + 5, addr & 0xff);
768 TOHEX (buf + 7, type);
769
770 chksum = count + addr + (addr >> 8) + type;
771
772 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
773 {
774 TOHEX (p, *data);
775 chksum += *data;
776 }
777
778 TOHEX (p, (- chksum) & 0xff);
779 p[2] = '\r';
780 p[3] = '\n';
781
782 if (bfd_write (buf, 1, 9 + count * 2 + 4, abfd) != 9 + count * 2 + 4)
783 return false;
784
785 return true;
786 }
787
788 /* Write out an Intel Hex file. */
789
790 static boolean
791 ihex_write_object_contents (abfd)
792 bfd *abfd;
793 {
794 bfd_vma segbase;
795 struct ihex_data_list *l;
796
797 segbase = 0;
798 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
799 {
800 bfd_vma where;
801 bfd_byte *p;
802 bfd_size_type count;
803
804 where = l->where;
805 p = l->data;
806 count = l->size;
807 while (count > 0)
808 {
809 bfd_size_type now;
810
811 now = count;
812 if (now > CHUNK)
813 now = CHUNK;
814
815 if (where > segbase + 0xffff)
816 {
817 bfd_byte addr[2];
818
819 /* We need a new base address. */
820 if (where <= 0xfffff)
821 {
822 segbase = where & 0xf0000;
823 addr[0] = (segbase >> 12) & 0xff;
824 addr[1] = (segbase >> 4) & 0xff;
825 if (! ihex_write_record (abfd, 2, 0, 2, addr))
826 return false;
827 }
828 else
829 {
830 segbase = where & 0xffff0000;
831 if (where > segbase + 0xffff)
832 {
833 char buf[20];
834
835 sprintf_vma (buf, where);
836 (*_bfd_error_handler)
837 ("%s: address 0x%s out of range for Intex Hex file",
838 bfd_get_filename (abfd), buf);
839 bfd_set_error (bfd_error_bad_value);
840 return false;
841 }
842 addr[0] = (segbase >> 24) & 0xff;
843 addr[1] = (segbase >> 16) & 0xff;
844 if (! ihex_write_record (abfd, 2, 0, 4, addr))
845 return false;
846 }
847 }
848
849 if (! ihex_write_record (abfd, now, where - segbase, 0, p))
850 return false;
851
852 where += now;
853 p += now;
854 count -= now;
855 }
856 }
857
858 if (abfd->start_address != 0)
859 {
860 bfd_vma start;
861 bfd_byte startbuf[4];
862
863 start = abfd->start_address;
864
865 if (start <= 0xfffff)
866 {
867 startbuf[0] = ((start & 0xf0000) >> 12) & 0xff;
868 startbuf[1] = 0;
869 startbuf[2] = (start >> 8) & 0xff;
870 startbuf[3] = start & 0xff;
871 if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
872 return false;
873 }
874 else
875 {
876 startbuf[0] = (start >> 24) & 0xff;
877 startbuf[1] = (start >> 16) & 0xff;
878 startbuf[2] = (start >> 8) & 0xff;
879 startbuf[3] = start & 0xff;
880 if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
881 return false;
882 }
883 }
884
885 if (! ihex_write_record (abfd, 0, 0, 1, NULL))
886 return false;
887
888 return true;
889 }
890
891 /* Make an empty symbol. This is required only because
892 bfd_make_section_anyway wants to create a symbol for the section. */
893
894 static asymbol *
895 ihex_make_empty_symbol (abfd)
896 bfd *abfd;
897 {
898 asymbol *new;
899
900 new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
901 if (new != NULL)
902 new->the_bfd = abfd;
903 return new;
904 }
905
906 /* Set the architecture for the output file. The architecture is
907 irrelevant, so we ignore errors about unknown architectures. */
908
909 static boolean
910 ihex_set_arch_mach (abfd, arch, mach)
911 bfd *abfd;
912 enum bfd_architecture arch;
913 unsigned long mach;
914 {
915 if (! bfd_default_set_arch_mach (abfd, arch, mach))
916 {
917 if (arch != bfd_arch_unknown)
918 return false;
919 }
920 return true;
921 }
922
923 /* Get the size of the headers, for the linker. */
924
925 /*ARGSUSED*/
926 static int
927 ihex_sizeof_headers (abfd, exec)
928 bfd *abfd;
929 boolean exec;
930 {
931 return 0;
932 }
933
934 /* Some random definitions for the target vector. */
935
936 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup
937 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
938 #define ihex_new_section_hook _bfd_generic_new_section_hook
939 #define ihex_get_section_contents_in_window \
940 _bfd_generic_get_section_contents_in_window
941
942 #define ihex_get_symtab_upper_bound bfd_0l
943 #define ihex_get_symtab \
944 ((long (*) PARAMS ((bfd *, asymbol **))) bfd_0l)
945 #define ihex_print_symbol _bfd_nosymbols_print_symbol
946 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info
947 #define ihex_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
948 #define ihex_get_lineno _bfd_nosymbols_get_lineno
949 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line
950 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
951 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
952 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
953
954 #define ihex_get_reloc_upper_bound \
955 ((long (*) PARAMS ((bfd *, asection *))) bfd_0l)
956 #define ihex_canonicalize_reloc \
957 ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l)
958 #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
959
960 #define ihex_bfd_get_relocated_section_contents \
961 bfd_generic_get_relocated_section_contents
962 #define ihex_bfd_relax_section bfd_generic_relax_section
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_final_link _bfd_generic_final_link
966 #define ihex_bfd_link_split_section _bfd_generic_link_split_section
967
968 /* The Intel Hex target vector. */
969
970 const bfd_target ihex_vec =
971 {
972 "ihex", /* name */
973 bfd_target_ihex_flavour,
974 BFD_ENDIAN_UNKNOWN, /* target byte order */
975 BFD_ENDIAN_UNKNOWN, /* target headers byte order */
976 0, /* object flags */
977 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */
978 0, /* leading underscore */
979 ' ', /* ar_pad_char */
980 16, /* ar_max_namelen */
981 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
982 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
983 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
984 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
985 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
986 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
987
988 {
989 _bfd_dummy_target,
990 ihex_object_p, /* bfd_check_format */
991 _bfd_dummy_target,
992 _bfd_dummy_target,
993 },
994 {
995 bfd_false,
996 ihex_mkobject,
997 _bfd_generic_mkarchive,
998 bfd_false,
999 },
1000 { /* bfd_write_contents */
1001 bfd_false,
1002 ihex_write_object_contents,
1003 _bfd_write_archive_contents,
1004 bfd_false,
1005 },
1006
1007 BFD_JUMP_TABLE_GENERIC (ihex),
1008 BFD_JUMP_TABLE_COPY (_bfd_generic),
1009 BFD_JUMP_TABLE_CORE (_bfd_nocore),
1010 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1011 BFD_JUMP_TABLE_SYMBOLS (ihex),
1012 BFD_JUMP_TABLE_RELOCS (ihex),
1013 BFD_JUMP_TABLE_WRITE (ihex),
1014 BFD_JUMP_TABLE_LINK (ihex),
1015 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1016
1017 (PTR) 0
1018 };
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