file sysinfo.h was initially added on branch binutils-2_10-branch.
[binutils.git] / bfd / ihex.c
blobd00c59b5e1a15ad0c6298766d6959d3330116dc9
1 /* BFD back-end for Intel Hex objects.
2 Copyright 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
21 /* This is what Intel Hex files look like:
23 1. INTEL FORMATS
25 A. Intel 1
27 16-bit address-field format, for files 64k bytes in length or less.
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
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
49 B. INTEL 2
51 MCS-86 format, using a 20-bit address for files larger than 64K bytes.
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
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
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.
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
88 Another document reports these additional types:
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
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
108 The MRI compiler uses this, which is a repeat of type 5:
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
121 #include "bfd.h"
122 #include "sysdep.h"
123 #include "libbfd.h"
124 #include "libiberty.h"
126 #include <ctype.h>
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 static int ihex_sizeof_headers PARAMS ((bfd *, boolean));
147 /* The number of bytes we put on one line during output. */
149 #define CHUNK 16
151 /* Macros for converting between hex and binary. */
153 #define NIBBLE(x) (hex_value (x))
154 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
155 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
156 #define ISHEX(x) (hex_p (x))
158 /* When we write out an ihex value, the values can not be output as
159 they are seen. Instead, we hold them in memory in this structure. */
161 struct ihex_data_list
163 struct ihex_data_list *next;
164 bfd_byte *data;
165 bfd_vma where;
166 bfd_size_type size;
169 /* The ihex tdata information. */
171 struct ihex_data_struct
173 struct ihex_data_list *head;
174 struct ihex_data_list *tail;
177 /* Initialize by filling in the hex conversion array. */
179 static void
180 ihex_init ()
182 static boolean inited;
184 if (! inited)
186 inited = true;
187 hex_init ();
191 /* Create an ihex object. */
193 static boolean
194 ihex_mkobject (abfd)
195 bfd *abfd;
197 if (abfd->tdata.ihex_data == NULL)
199 struct ihex_data_struct *tdata;
201 tdata = ((struct ihex_data_struct *)
202 bfd_alloc (abfd, sizeof (struct ihex_data_struct)));
203 if (tdata == NULL)
204 return false;
205 abfd->tdata.ihex_data = tdata;
206 tdata->head = NULL;
207 tdata->tail = NULL;
210 return true;
213 /* Read a byte from a BFD. Set *ERRORPTR if an error occurred.
214 Return EOF on error or end of file. */
216 static INLINE int
217 ihex_get_byte (abfd, errorptr)
218 bfd *abfd;
219 boolean *errorptr;
221 bfd_byte c;
223 if (bfd_read (&c, 1, 1, abfd) != 1)
225 if (bfd_get_error () != bfd_error_file_truncated)
226 *errorptr = true;
227 return EOF;
230 return (int) (c & 0xff);
233 /* Report a problem in an Intel Hex file. */
235 static void
236 ihex_bad_byte (abfd, lineno, c, error)
237 bfd *abfd;
238 unsigned int lineno;
239 int c;
240 boolean error;
242 if (c == EOF)
244 if (! error)
245 bfd_set_error (bfd_error_file_truncated);
247 else
249 char buf[10];
251 if (! isprint (c))
252 sprintf (buf, "\\%03o", (unsigned int) c);
253 else
255 buf[0] = c;
256 buf[1] = '\0';
258 (*_bfd_error_handler)
259 (_("%s:%d: unexpected character `%s' in Intel Hex file\n"),
260 bfd_get_filename (abfd), lineno, buf);
261 bfd_set_error (bfd_error_bad_value);
265 /* Read an Intel hex file and turn it into sections. We create a new
266 section for each contiguous set of bytes. */
268 static boolean
269 ihex_scan (abfd)
270 bfd *abfd;
272 bfd_vma segbase;
273 bfd_vma extbase;
274 asection *sec;
275 int lineno;
276 boolean error;
277 bfd_byte *buf = NULL;
278 size_t bufsize;
279 int c;
281 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
282 goto error_return;
284 abfd->start_address = 0;
286 segbase = 0;
287 extbase = 0;
288 sec = NULL;
289 lineno = 1;
290 error = false;
291 bufsize = 0;
292 while ((c = ihex_get_byte (abfd, &error)) != EOF)
294 if (c == '\r')
295 continue;
296 else if (c == '\n')
298 ++lineno;
299 continue;
301 else if (c != ':')
303 ihex_bad_byte (abfd, lineno, c, error);
304 goto error_return;
306 else
308 file_ptr pos;
309 char hdr[8];
310 unsigned int i;
311 unsigned int len;
312 bfd_vma addr;
313 unsigned int type;
314 unsigned int chars;
315 unsigned int chksum;
317 /* This is a data record. */
319 pos = bfd_tell (abfd) - 1;
321 /* Read the header bytes. */
323 if (bfd_read (hdr, 1, 8, abfd) != 8)
324 goto error_return;
326 for (i = 0; i < 8; i++)
328 if (! ISHEX (hdr[i]))
330 ihex_bad_byte (abfd, lineno, hdr[i], error);
331 goto error_return;
335 len = HEX2 (hdr);
336 addr = HEX4 (hdr + 2);
337 type = HEX2 (hdr + 6);
339 /* Read the data bytes. */
341 chars = len * 2 + 2;
342 if (chars >= bufsize)
344 buf = (bfd_byte *) bfd_realloc (buf, chars);
345 if (buf == NULL)
346 goto error_return;
347 bufsize = chars;
350 if (bfd_read (buf, 1, chars, abfd) != chars)
351 goto error_return;
353 for (i = 0; i < chars; i++)
355 if (! ISHEX (buf[i]))
357 ihex_bad_byte (abfd, lineno, hdr[i], error);
358 goto error_return;
362 /* Check the checksum. */
363 chksum = len + addr + (addr >> 8) + type;
364 for (i = 0; i < len; i++)
365 chksum += HEX2 (buf + 2 * i);
366 if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
368 (*_bfd_error_handler)
369 (_("%s:%d: bad checksum in Intel Hex file (expected %u, found %u)"),
370 bfd_get_filename (abfd), lineno,
371 (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
372 bfd_set_error (bfd_error_bad_value);
373 goto error_return;
376 switch (type)
378 case 0:
379 /* This is a data record. */
380 if (sec != NULL
381 && sec->vma + sec->_raw_size == extbase + segbase + addr)
383 /* This data goes at the end of the section we are
384 currently building. */
385 sec->_raw_size += len;
387 else if (len > 0)
389 char secbuf[20];
390 char *secname;
392 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
393 secname = (char *) bfd_alloc (abfd, strlen (secbuf) + 1);
394 if (secname == NULL)
395 goto error_return;
396 strcpy (secname, secbuf);
397 sec = bfd_make_section (abfd, secname);
398 if (sec == NULL)
399 goto error_return;
400 sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
401 sec->vma = extbase + segbase + addr;
402 sec->lma = extbase + segbase + addr;
403 sec->_raw_size = len;
404 sec->filepos = pos;
406 break;
408 case 1:
409 /* An end record. */
410 if (abfd->start_address == 0)
411 abfd->start_address = addr;
412 if (buf != NULL)
413 free (buf);
414 return true;
416 case 2:
417 /* An extended address record. */
418 if (len != 2)
420 (*_bfd_error_handler)
421 (_("%s:%d: bad extended address record length in Intel Hex file"),
422 bfd_get_filename (abfd), lineno);
423 bfd_set_error (bfd_error_bad_value);
424 goto error_return;
427 segbase = HEX4 (buf) << 4;
429 sec = NULL;
431 break;
433 case 3:
434 /* An extended start address record. */
435 if (len != 4)
437 (*_bfd_error_handler)
438 (_("%s:%d: bad extended start address length in Intel Hex file"),
439 bfd_get_filename (abfd), lineno);
440 bfd_set_error (bfd_error_bad_value);
441 goto error_return;
444 abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
446 sec = NULL;
448 break;
450 case 4:
451 /* An extended linear address record. */
452 if (len != 2)
454 (*_bfd_error_handler)
455 (_("%s:%d: bad extended linear address record length in Intel Hex file"),
456 bfd_get_filename (abfd), lineno);
457 bfd_set_error (bfd_error_bad_value);
458 goto error_return;
461 extbase = HEX4 (buf) << 16;
463 sec = NULL;
465 break;
467 case 5:
468 /* An extended linear start address record. */
469 if (len != 2 && len != 4)
471 (*_bfd_error_handler)
472 (_("%s:%d: bad extended linear start address length in Intel Hex file"),
473 bfd_get_filename (abfd), lineno);
474 bfd_set_error (bfd_error_bad_value);
475 goto error_return;
478 if (len == 2)
479 abfd->start_address += HEX4 (buf) << 16;
480 else
481 abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
483 sec = NULL;
485 break;
487 default:
488 (*_bfd_error_handler)
489 (_("%s:%d: unrecognized ihex type %u in Intel Hex file\n"),
490 bfd_get_filename (abfd), lineno, type);
491 bfd_set_error (bfd_error_bad_value);
492 goto error_return;
497 if (error)
498 goto error_return;
500 if (buf != NULL)
501 free (buf);
503 return true;
505 error_return:
506 if (buf != NULL)
507 free (buf);
508 return false;
511 /* Try to recognize an Intel Hex file. */
513 static const bfd_target *
514 ihex_object_p (abfd)
515 bfd *abfd;
517 bfd_byte b[9];
518 unsigned int i;
519 unsigned int type;
521 ihex_init ();
523 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
524 return NULL;
525 if (bfd_read (b, 1, 9, abfd) != 9)
527 if (bfd_get_error () == bfd_error_file_truncated)
528 bfd_set_error (bfd_error_wrong_format);
529 return NULL;
532 if (b[0] != ':')
534 bfd_set_error (bfd_error_wrong_format);
535 return NULL;
538 for (i = 1; i < 9; i++)
540 if (! ISHEX (b[i]))
542 bfd_set_error (bfd_error_wrong_format);
543 return NULL;
547 type = HEX2 (b + 7);
548 if (type > 5)
550 bfd_set_error (bfd_error_wrong_format);
551 return NULL;
554 /* OK, it looks like it really is an Intel Hex file. */
556 if (! ihex_mkobject (abfd)
557 || ! ihex_scan (abfd))
558 return NULL;
560 return abfd->xvec;
563 /* Read the contents of a section in an Intel Hex file. */
565 static boolean
566 ihex_read_section (abfd, section, contents)
567 bfd *abfd;
568 asection *section;
569 bfd_byte *contents;
571 int c;
572 bfd_byte *p;
573 bfd_byte *buf = NULL;
574 size_t bufsize;
575 boolean error;
577 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
578 goto error_return;
580 p = contents;
581 bufsize = 0;
582 error = false;
583 while ((c = ihex_get_byte (abfd, &error)) != EOF)
585 char hdr[8];
586 unsigned int len;
587 bfd_vma addr;
588 unsigned int type;
589 unsigned int i;
591 if (c == '\r' || c == '\n')
592 continue;
594 /* This is called after ihex_scan has succeeded, so we ought to
595 know the exact format. */
596 BFD_ASSERT (c == ':');
598 if (bfd_read (hdr, 1, 8, abfd) != 8)
599 goto error_return;
601 len = HEX2 (hdr);
602 addr = HEX4 (hdr + 2);
603 type = HEX2 (hdr + 6);
605 /* We should only see type 0 records here. */
606 if (type != 0)
608 (*_bfd_error_handler)
609 (_("%s: internal error in ihex_read_section"),
610 bfd_get_filename (abfd));
611 bfd_set_error (bfd_error_bad_value);
612 goto error_return;
615 if (len * 2 > bufsize)
617 buf = (bfd_byte *) bfd_realloc (buf, len * 2);
618 if (buf == NULL)
619 goto error_return;
620 bufsize = len * 2;
623 if (bfd_read (buf, 1, len * 2, abfd) != len * 2)
624 goto error_return;
626 for (i = 0; i < len; i++)
627 *p++ = HEX2 (buf + 2 * i);
628 if ((bfd_size_type) (p - contents) >= section->_raw_size)
630 /* We've read everything in the section. */
631 if (buf != NULL)
632 free (buf);
633 return true;
636 /* Skip the checksum. */
637 if (bfd_read (buf, 1, 2, abfd) != 2)
638 goto error_return;
641 if ((bfd_size_type) (p - contents) < section->_raw_size)
643 (*_bfd_error_handler)
644 (_("%s: bad section length in ihex_read_section"),
645 bfd_get_filename (abfd));
646 bfd_set_error (bfd_error_bad_value);
647 goto error_return;
650 if (buf != NULL)
651 free (buf);
653 return true;
655 error_return:
656 if (buf != NULL)
657 free (buf);
658 return false;
661 /* Get the contents of a section in an Intel Hex file. */
663 static boolean
664 ihex_get_section_contents (abfd, section, location, offset, count)
665 bfd *abfd;
666 asection *section;
667 PTR location;
668 file_ptr offset;
669 bfd_size_type count;
671 if (section->used_by_bfd == NULL)
673 section->used_by_bfd = bfd_alloc (abfd, section->_raw_size);
674 if (section->used_by_bfd == NULL)
675 return false;
676 if (! ihex_read_section (abfd, section, section->used_by_bfd))
677 return false;
680 memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
681 (size_t) count);
683 return true;
686 /* Set the contents of a section in an Intel Hex file. */
688 static boolean
689 ihex_set_section_contents (abfd, section, location, offset, count)
690 bfd *abfd;
691 asection *section;
692 PTR location;
693 file_ptr offset;
694 bfd_size_type count;
696 struct ihex_data_list *n;
697 bfd_byte *data;
698 struct ihex_data_struct *tdata;
700 if (count == 0
701 || (section->flags & SEC_ALLOC) == 0
702 || (section->flags & SEC_LOAD) == 0)
703 return true;
705 n = ((struct ihex_data_list *)
706 bfd_alloc (abfd, sizeof (struct ihex_data_list)));
707 if (n == NULL)
708 return false;
710 data = (bfd_byte *) bfd_alloc (abfd, count);
711 if (data == NULL)
712 return false;
713 memcpy (data, location, (size_t) count);
715 n->data = data;
716 n->where = section->lma + offset;
717 n->size = count;
719 /* Sort the records by address. Optimize for the common case of
720 adding a record to the end of the list. */
721 tdata = abfd->tdata.ihex_data;
722 if (tdata->tail != NULL
723 && n->where >= tdata->tail->where)
725 tdata->tail->next = n;
726 n->next = NULL;
727 tdata->tail = n;
729 else
731 register struct ihex_data_list **pp;
733 for (pp = &tdata->head;
734 *pp != NULL && (*pp)->where < n->where;
735 pp = &(*pp)->next)
737 n->next = *pp;
738 *pp = n;
739 if (n->next == NULL)
740 tdata->tail = n;
743 return true;
746 /* Write a record out to an Intel Hex file. */
748 static boolean
749 ihex_write_record (abfd, count, addr, type, data)
750 bfd *abfd;
751 bfd_size_type count;
752 bfd_vma addr;
753 unsigned int type;
754 bfd_byte *data;
756 static const char digs[] = "0123456789ABCDEF";
757 char buf[9 + CHUNK * 2 + 4];
758 char *p;
759 unsigned int chksum;
760 unsigned int i;
762 #define TOHEX(buf, v) \
763 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
765 buf[0] = ':';
766 TOHEX (buf + 1, count);
767 TOHEX (buf + 3, (addr >> 8) & 0xff);
768 TOHEX (buf + 5, addr & 0xff);
769 TOHEX (buf + 7, type);
771 chksum = count + addr + (addr >> 8) + type;
773 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
775 TOHEX (p, *data);
776 chksum += *data;
779 TOHEX (p, (- chksum) & 0xff);
780 p[2] = '\r';
781 p[3] = '\n';
783 if (bfd_write (buf, 1, 9 + count * 2 + 4, abfd) != 9 + count * 2 + 4)
784 return false;
786 return true;
789 /* Write out an Intel Hex file. */
791 static boolean
792 ihex_write_object_contents (abfd)
793 bfd *abfd;
795 bfd_vma segbase;
796 bfd_vma extbase;
797 struct ihex_data_list *l;
799 segbase = 0;
800 extbase = 0;
801 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
803 bfd_vma where;
804 bfd_byte *p;
805 bfd_size_type count;
807 where = l->where;
808 p = l->data;
809 count = l->size;
810 while (count > 0)
812 bfd_size_type now;
814 now = count;
815 if (now > CHUNK)
816 now = CHUNK;
818 if (where > segbase + extbase + 0xffff)
820 bfd_byte addr[2];
822 /* We need a new base address. */
823 if (where <= 0xfffff)
825 /* The addresses should be sorted. */
826 BFD_ASSERT (extbase == 0);
828 segbase = where & 0xf0000;
829 addr[0] = (bfd_byte)(segbase >> 12) & 0xff;
830 addr[1] = (bfd_byte)(segbase >> 4) & 0xff;
831 if (! ihex_write_record (abfd, 2, 0, 2, addr))
832 return false;
834 else
836 /* The extended address record and the extended
837 linear address record are combined, at least by
838 some readers. We need an extended linear address
839 record here, so if we've already written out an
840 extended address record, zero it out to avoid
841 confusion. */
842 if (segbase != 0)
844 addr[0] = 0;
845 addr[1] = 0;
846 if (! ihex_write_record (abfd, 2, 0, 2, addr))
847 return false;
848 segbase = 0;
851 extbase = where & 0xffff0000;
852 if (where > extbase + 0xffff)
854 char buf[20];
856 sprintf_vma (buf, where);
857 (*_bfd_error_handler)
858 (_("%s: address 0x%s out of range for Intex Hex file"),
859 bfd_get_filename (abfd), buf);
860 bfd_set_error (bfd_error_bad_value);
861 return false;
863 addr[0] = (bfd_byte)(extbase >> 24) & 0xff;
864 addr[1] = (bfd_byte)(extbase >> 16) & 0xff;
865 if (! ihex_write_record (abfd, 2, 0, 4, addr))
866 return false;
870 if (! ihex_write_record (abfd, now, where - (extbase + segbase),
871 0, p))
872 return false;
874 where += now;
875 p += now;
876 count -= now;
880 if (abfd->start_address != 0)
882 bfd_vma start;
883 bfd_byte startbuf[4];
885 start = abfd->start_address;
887 if (start <= 0xfffff)
889 startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
890 startbuf[1] = 0;
891 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
892 startbuf[3] = (bfd_byte)start & 0xff;
893 if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
894 return false;
896 else
898 startbuf[0] = (bfd_byte)(start >> 24) & 0xff;
899 startbuf[1] = (bfd_byte)(start >> 16) & 0xff;
900 startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
901 startbuf[3] = (bfd_byte)start & 0xff;
902 if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
903 return false;
907 if (! ihex_write_record (abfd, 0, 0, 1, NULL))
908 return false;
910 return true;
913 /* Make an empty symbol. This is required only because
914 bfd_make_section_anyway wants to create a symbol for the section. */
916 static asymbol *
917 ihex_make_empty_symbol (abfd)
918 bfd *abfd;
920 asymbol *new;
922 new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
923 if (new != NULL)
924 new->the_bfd = abfd;
925 return new;
928 /* Set the architecture for the output file. The architecture is
929 irrelevant, so we ignore errors about unknown architectures. */
931 static boolean
932 ihex_set_arch_mach (abfd, arch, mach)
933 bfd *abfd;
934 enum bfd_architecture arch;
935 unsigned long mach;
937 if (! bfd_default_set_arch_mach (abfd, arch, mach))
939 if (arch != bfd_arch_unknown)
940 return false;
942 return true;
945 /* Get the size of the headers, for the linker. */
947 /*ARGSUSED*/
948 static int
949 ihex_sizeof_headers (abfd, exec)
950 bfd *abfd ATTRIBUTE_UNUSED;
951 boolean exec ATTRIBUTE_UNUSED;
953 return 0;
956 /* Some random definitions for the target vector. */
958 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup
959 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
960 #define ihex_new_section_hook _bfd_generic_new_section_hook
961 #define ihex_get_section_contents_in_window \
962 _bfd_generic_get_section_contents_in_window
964 #define ihex_get_symtab_upper_bound bfd_0l
965 #define ihex_get_symtab \
966 ((long (*) PARAMS ((bfd *, asymbol **))) bfd_0l)
967 #define ihex_print_symbol _bfd_nosymbols_print_symbol
968 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info
969 #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
970 #define ihex_get_lineno _bfd_nosymbols_get_lineno
971 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line
972 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
973 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
974 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
976 #define ihex_get_reloc_upper_bound \
977 ((long (*) PARAMS ((bfd *, asection *))) bfd_0l)
978 #define ihex_canonicalize_reloc \
979 ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l)
980 #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
982 #define ihex_bfd_get_relocated_section_contents \
983 bfd_generic_get_relocated_section_contents
984 #define ihex_bfd_relax_section bfd_generic_relax_section
985 #define ihex_bfd_gc_sections bfd_generic_gc_sections
986 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
987 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
988 #define ihex_bfd_final_link _bfd_generic_final_link
989 #define ihex_bfd_link_split_section _bfd_generic_link_split_section
991 /* The Intel Hex target vector. */
993 const bfd_target ihex_vec =
995 "ihex", /* name */
996 bfd_target_ihex_flavour,
997 BFD_ENDIAN_UNKNOWN, /* target byte order */
998 BFD_ENDIAN_UNKNOWN, /* target headers byte order */
999 0, /* object flags */
1000 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */
1001 0, /* leading underscore */
1002 ' ', /* ar_pad_char */
1003 16, /* ar_max_namelen */
1004 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1005 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1006 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
1007 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
1008 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
1009 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
1012 _bfd_dummy_target,
1013 ihex_object_p, /* bfd_check_format */
1014 _bfd_dummy_target,
1015 _bfd_dummy_target,
1018 bfd_false,
1019 ihex_mkobject,
1020 _bfd_generic_mkarchive,
1021 bfd_false,
1023 { /* bfd_write_contents */
1024 bfd_false,
1025 ihex_write_object_contents,
1026 _bfd_write_archive_contents,
1027 bfd_false,
1030 BFD_JUMP_TABLE_GENERIC (ihex),
1031 BFD_JUMP_TABLE_COPY (_bfd_generic),
1032 BFD_JUMP_TABLE_CORE (_bfd_nocore),
1033 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
1034 BFD_JUMP_TABLE_SYMBOLS (ihex),
1035 BFD_JUMP_TABLE_RELOCS (ihex),
1036 BFD_JUMP_TABLE_WRITE (ihex),
1037 BFD_JUMP_TABLE_LINK (ihex),
1038 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
1040 NULL,
1042 (PTR) 0