1 /* BFD back-end for Intel Hex objects.
2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2009 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
24 /* This is what Intel Hex files look like:
30 16-bit address-field format, for files 64k bytes in length or less.
33 Byte 1 Header = colon(:)
34 2..3 The number of data bytes in hex notation
35 4..5 High byte of the record load address
36 6..7 Low byte of the record load address
37 8..9 Record type, must be "00"
38 10..x Data bytes in hex notation:
39 x = (number of bytes - 1) * 2 + 11
40 x+1..x+2 Checksum in hex notation
41 x+3..x+4 Carriage return, line feed
44 Byte 1 Header = colon (:)
45 2..3 The byte count, must be "00"
46 4..7 Transfer-address (usually "0000")
47 the jump-to address, execution start address
48 8..9 Record type, must be "01"
49 10..11 Checksum, in hex notation
50 12..13 Carriage return, line feed
54 MCS-86 format, using a 20-bit address for files larger than 64K bytes.
57 Byte 1 Header = colon (:)
58 2..3 The byte count of this record, hex notation
59 4..5 High byte of the record load address
60 6..7 Low byte of the record load address
61 8..9 Record type, must be "00"
62 10..x The data bytes in hex notation:
63 x = (number of data bytes - 1) * 2 + 11
64 x+1..x+2 Checksum in hex notation
65 x+3..x+4 Carriage return, line feed
67 EXTENDED ADDRESS RECORD
68 Byte 1 Header = colon(:)
69 2..3 The byte count, must be "02"
70 4..7 Load address, must be "0000"
71 8..9 Record type, must be "02"
72 10..11 High byte of the offset address
73 12..13 Low byte of the offset address
74 14..15 Checksum in hex notation
75 16..17 Carriage return, line feed
77 The checksums are the two's complement of the 8-bit sum
78 without carry of the byte count, offset address, and the
82 Byte 1 Header = colon (:)
83 2..3 The byte count, must be "04"
84 4..7 Load address, must be "0000"
85 8..9 Record type, must be "03"
88 18..19 Checksum in hex notation
89 20..21 Carriage return, line feed
91 Another document reports these additional types:
93 EXTENDED LINEAR ADDRESS RECORD
94 Byte 1 Header = colon (:)
95 2..3 The byte count, must be "02"
96 4..7 Load address, must be "0000"
97 8..9 Record type, must be "04"
98 10..13 Upper 16 bits of address of subsequent records
99 14..15 Checksum in hex notation
100 16..17 Carriage return, line feed
102 START LINEAR ADDRESS RECORD
103 Byte 1 Header = colon (:)
104 2..3 The byte count, must be "02"
105 4..7 Load address, must be "0000"
106 8..9 Record type, must be "05"
107 10..13 Upper 16 bits of start address
108 14..15 Checksum in hex notation
109 16..17 Carriage return, line feed
111 The MRI compiler uses this, which is a repeat of type 5:
113 EXTENDED START RECORD
114 Byte 1 Header = colon (:)
115 2..3 The byte count, must be "04"
116 4..7 Load address, must be "0000"
117 8..9 Record type, must be "05"
118 10..13 Upper 16 bits of start address
119 14..17 Lower 16 bits of start address
120 18..19 Checksum in hex notation
121 20..21 Carriage return, line feed. */
126 #include "libiberty.h"
127 #include "safe-ctype.h"
129 /* The number of bytes we put on one line during output. */
133 /* Macros for converting between hex and binary. */
135 #define NIBBLE(x) (hex_value (x))
136 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
137 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
138 #define ISHEX(x) (hex_p (x))
140 /* When we write out an ihex value, the values can not be output as
141 they are seen. Instead, we hold them in memory in this structure. */
143 struct ihex_data_list
145 struct ihex_data_list
*next
;
151 /* The ihex tdata information. */
153 struct ihex_data_struct
155 struct ihex_data_list
*head
;
156 struct ihex_data_list
*tail
;
159 /* Initialize by filling in the hex conversion array. */
164 static bfd_boolean inited
;
173 /* Create an ihex object. */
176 ihex_mkobject (bfd
*abfd
)
178 struct ihex_data_struct
*tdata
;
180 tdata
= (struct ihex_data_struct
*) bfd_alloc (abfd
, sizeof (* tdata
));
184 abfd
->tdata
.ihex_data
= tdata
;
190 /* Read a byte from a BFD. Set *ERRORPTR if an error occurred.
191 Return EOF on error or end of file. */
194 ihex_get_byte (bfd
*abfd
, bfd_boolean
*errorptr
)
198 if (bfd_bread (&c
, (bfd_size_type
) 1, abfd
) != 1)
200 if (bfd_get_error () != bfd_error_file_truncated
)
205 return (int) (c
& 0xff);
208 /* Report a problem in an Intel Hex file. */
211 ihex_bad_byte (bfd
*abfd
, unsigned int lineno
, int c
, bfd_boolean error
)
216 bfd_set_error (bfd_error_file_truncated
);
223 sprintf (buf
, "\\%03o", (unsigned int) c
);
229 (*_bfd_error_handler
)
230 (_("%B:%d: unexpected character `%s' in Intel Hex file"),
232 bfd_set_error (bfd_error_bad_value
);
236 /* Read an Intel hex file and turn it into sections. We create a new
237 section for each contiguous set of bytes. */
240 ihex_scan (bfd
*abfd
)
247 bfd_byte
*buf
= NULL
;
251 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
254 abfd
->start_address
= 0;
263 while ((c
= ihex_get_byte (abfd
, &error
)) != EOF
)
274 ihex_bad_byte (abfd
, lineno
, c
, error
);
288 /* This is a data record. */
289 pos
= bfd_tell (abfd
) - 1;
291 /* Read the header bytes. */
292 if (bfd_bread (hdr
, (bfd_size_type
) 8, abfd
) != 8)
295 for (i
= 0; i
< 8; i
++)
297 if (! ISHEX (hdr
[i
]))
299 ihex_bad_byte (abfd
, lineno
, hdr
[i
], error
);
305 addr
= HEX4 (hdr
+ 2);
306 type
= HEX2 (hdr
+ 6);
308 /* Read the data bytes. */
310 if (chars
>= bufsize
)
312 buf
= (bfd_byte
*) bfd_realloc (buf
, (bfd_size_type
) chars
);
318 if (bfd_bread (buf
, (bfd_size_type
) chars
, abfd
) != chars
)
321 for (i
= 0; i
< chars
; i
++)
323 if (! ISHEX (buf
[i
]))
325 ihex_bad_byte (abfd
, lineno
, hdr
[i
], error
);
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
))
336 (*_bfd_error_handler
)
337 (_("%B:%u: bad checksum in Intel Hex file (expected %u, found %u)"),
339 (- chksum
) & 0xff, (unsigned int) HEX2 (buf
+ 2 * i
));
340 bfd_set_error (bfd_error_bad_value
);
347 /* This is a data record. */
349 && sec
->vma
+ sec
->size
== extbase
+ segbase
+ addr
)
351 /* This data goes at the end of the section we are
352 currently building. */
362 sprintf (secbuf
, ".sec%d", bfd_count_sections (abfd
) + 1);
363 amt
= strlen (secbuf
) + 1;
364 secname
= (char *) bfd_alloc (abfd
, amt
);
367 strcpy (secname
, secbuf
);
368 flags
= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_ALLOC
;
369 sec
= bfd_make_section_with_flags (abfd
, secname
, flags
);
372 sec
->vma
= extbase
+ segbase
+ addr
;
373 sec
->lma
= extbase
+ segbase
+ addr
;
381 if (abfd
->start_address
== 0)
382 abfd
->start_address
= addr
;
388 /* An extended address record. */
391 (*_bfd_error_handler
)
392 (_("%B:%u: bad extended address record length in Intel Hex file"),
394 bfd_set_error (bfd_error_bad_value
);
398 segbase
= HEX4 (buf
) << 4;
405 /* An extended start address record. */
408 (*_bfd_error_handler
)
409 (_("%B:%u: bad extended start address length in Intel Hex file"),
411 bfd_set_error (bfd_error_bad_value
);
415 abfd
->start_address
+= (HEX4 (buf
) << 4) + HEX4 (buf
+ 4);
422 /* An extended linear address record. */
425 (*_bfd_error_handler
)
426 (_("%B:%u: bad extended linear address record length in Intel Hex file"),
428 bfd_set_error (bfd_error_bad_value
);
432 extbase
= HEX4 (buf
) << 16;
439 /* An extended linear start address record. */
440 if (len
!= 2 && len
!= 4)
442 (*_bfd_error_handler
)
443 (_("%B:%u: bad extended linear start address length in Intel Hex file"),
445 bfd_set_error (bfd_error_bad_value
);
450 abfd
->start_address
+= HEX4 (buf
) << 16;
452 abfd
->start_address
= (HEX4 (buf
) << 16) + HEX4 (buf
+ 4);
459 (*_bfd_error_handler
)
460 (_("%B:%u: unrecognized ihex type %u in Intel Hex file"),
462 bfd_set_error (bfd_error_bad_value
);
482 /* Try to recognize an Intel Hex file. */
484 static const bfd_target
*
485 ihex_object_p (bfd
*abfd
)
494 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0)
496 if (bfd_bread (b
, (bfd_size_type
) 9, abfd
) != 9)
498 if (bfd_get_error () == bfd_error_file_truncated
)
499 bfd_set_error (bfd_error_wrong_format
);
505 bfd_set_error (bfd_error_wrong_format
);
509 for (i
= 1; i
< 9; i
++)
513 bfd_set_error (bfd_error_wrong_format
);
521 bfd_set_error (bfd_error_wrong_format
);
525 /* OK, it looks like it really is an Intel Hex file. */
526 tdata_save
= abfd
->tdata
.any
;
527 if (! ihex_mkobject (abfd
) || ! ihex_scan (abfd
))
529 if (abfd
->tdata
.any
!= tdata_save
&& abfd
->tdata
.any
!= NULL
)
530 bfd_release (abfd
, abfd
->tdata
.any
);
531 abfd
->tdata
.any
= tdata_save
;
538 /* Read the contents of a section in an Intel Hex file. */
541 ihex_read_section (bfd
*abfd
, asection
*section
, bfd_byte
*contents
)
545 bfd_byte
*buf
= NULL
;
549 if (bfd_seek (abfd
, section
->filepos
, SEEK_SET
) != 0)
555 while ((c
= ihex_get_byte (abfd
, &error
)) != EOF
)
562 if (c
== '\r' || c
== '\n')
565 /* This is called after ihex_scan has succeeded, so we ought to
566 know the exact format. */
567 BFD_ASSERT (c
== ':');
569 if (bfd_bread (hdr
, (bfd_size_type
) 8, abfd
) != 8)
573 type
= HEX2 (hdr
+ 6);
575 /* We should only see type 0 records here. */
578 (*_bfd_error_handler
)
579 (_("%B: internal error in ihex_read_section"), abfd
);
580 bfd_set_error (bfd_error_bad_value
);
584 if (len
* 2 > bufsize
)
586 buf
= (bfd_byte
*) bfd_realloc (buf
, (bfd_size_type
) len
* 2);
592 if (bfd_bread (buf
, (bfd_size_type
) len
* 2, abfd
) != len
* 2)
595 for (i
= 0; i
< len
; i
++)
596 *p
++ = HEX2 (buf
+ 2 * i
);
597 if ((bfd_size_type
) (p
- contents
) >= section
->size
)
599 /* We've read everything in the section. */
605 /* Skip the checksum. */
606 if (bfd_bread (buf
, (bfd_size_type
) 2, abfd
) != 2)
610 if ((bfd_size_type
) (p
- contents
) < section
->size
)
612 (*_bfd_error_handler
)
613 (_("%B: bad section length in ihex_read_section"), abfd
);
614 bfd_set_error (bfd_error_bad_value
);
629 /* Get the contents of a section in an Intel Hex file. */
632 ihex_get_section_contents (bfd
*abfd
,
638 if (section
->used_by_bfd
== NULL
)
640 section
->used_by_bfd
= bfd_alloc (abfd
, section
->size
);
641 if (section
->used_by_bfd
== NULL
)
643 if (! ihex_read_section (abfd
, section
,
644 (bfd_byte
*) section
->used_by_bfd
))
648 memcpy (location
, (bfd_byte
*) section
->used_by_bfd
+ offset
,
654 /* Set the contents of a section in an Intel Hex file. */
657 ihex_set_section_contents (bfd
*abfd
,
659 const void * location
,
663 struct ihex_data_list
*n
;
665 struct ihex_data_struct
*tdata
;
668 || (section
->flags
& SEC_ALLOC
) == 0
669 || (section
->flags
& SEC_LOAD
) == 0)
672 n
= (struct ihex_data_list
*) bfd_alloc (abfd
, sizeof (* n
));
676 data
= (bfd_byte
*) bfd_alloc (abfd
, count
);
679 memcpy (data
, location
, (size_t) count
);
682 n
->where
= section
->lma
+ offset
;
685 /* Sort the records by address. Optimize for the common case of
686 adding a record to the end of the list. */
687 tdata
= abfd
->tdata
.ihex_data
;
688 if (tdata
->tail
!= NULL
689 && n
->where
>= tdata
->tail
->where
)
691 tdata
->tail
->next
= n
;
697 struct ihex_data_list
**pp
;
699 for (pp
= &tdata
->head
;
700 *pp
!= NULL
&& (*pp
)->where
< n
->where
;
712 /* Write a record out to an Intel Hex file. */
715 ihex_write_record (bfd
*abfd
,
721 static const char digs
[] = "0123456789ABCDEF";
722 char buf
[9 + CHUNK
* 2 + 4];
728 #define TOHEX(buf, v) \
729 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
732 TOHEX (buf
+ 1, count
);
733 TOHEX (buf
+ 3, (addr
>> 8) & 0xff);
734 TOHEX (buf
+ 5, addr
& 0xff);
735 TOHEX (buf
+ 7, type
);
737 chksum
= count
+ addr
+ (addr
>> 8) + type
;
739 for (i
= 0, p
= buf
+ 9; i
< count
; i
++, p
+= 2, data
++)
745 TOHEX (p
, (- chksum
) & 0xff);
749 total
= 9 + count
* 2 + 4;
750 if (bfd_bwrite (buf
, (bfd_size_type
) total
, abfd
) != total
)
756 /* Write out an Intel Hex file. */
759 ihex_write_object_contents (bfd
*abfd
)
763 struct ihex_data_list
*l
;
767 for (l
= abfd
->tdata
.ihex_data
->head
; l
!= NULL
; l
= l
->next
)
780 unsigned int rec_addr
;
786 if (where
> segbase
+ extbase
+ 0xffff)
790 /* We need a new base address. */
791 if (where
<= 0xfffff)
793 /* The addresses should be sorted. */
794 BFD_ASSERT (extbase
== 0);
796 segbase
= where
& 0xf0000;
797 addr
[0] = (bfd_byte
)(segbase
>> 12) & 0xff;
798 addr
[1] = (bfd_byte
)(segbase
>> 4) & 0xff;
799 if (! ihex_write_record (abfd
, 2, 0, 2, addr
))
804 /* The extended address record and the extended
805 linear address record are combined, at least by
806 some readers. We need an extended linear address
807 record here, so if we've already written out an
808 extended address record, zero it out to avoid
814 if (! ihex_write_record (abfd
, 2, 0, 2, addr
))
819 extbase
= where
& 0xffff0000;
820 if (where
> extbase
+ 0xffff)
824 sprintf_vma (buf
, where
);
825 (*_bfd_error_handler
)
826 (_("%s: address 0x%s out of range for Intel Hex file"),
827 bfd_get_filename (abfd
), buf
);
828 bfd_set_error (bfd_error_bad_value
);
831 addr
[0] = (bfd_byte
)(extbase
>> 24) & 0xff;
832 addr
[1] = (bfd_byte
)(extbase
>> 16) & 0xff;
833 if (! ihex_write_record (abfd
, 2, 0, 4, addr
))
838 rec_addr
= where
- (extbase
+ segbase
);
840 /* Output records shouldn't cross 64K boundaries. */
841 if (rec_addr
+ now
> 0xffff)
842 now
= 0x10000 - rec_addr
;
844 if (! ihex_write_record (abfd
, now
, rec_addr
, 0, p
))
853 if (abfd
->start_address
!= 0)
856 bfd_byte startbuf
[4];
858 start
= abfd
->start_address
;
860 if (start
<= 0xfffff)
862 startbuf
[0] = (bfd_byte
)((start
& 0xf0000) >> 12) & 0xff;
864 startbuf
[2] = (bfd_byte
)(start
>> 8) & 0xff;
865 startbuf
[3] = (bfd_byte
)start
& 0xff;
866 if (! ihex_write_record (abfd
, 4, 0, 3, startbuf
))
871 startbuf
[0] = (bfd_byte
)(start
>> 24) & 0xff;
872 startbuf
[1] = (bfd_byte
)(start
>> 16) & 0xff;
873 startbuf
[2] = (bfd_byte
)(start
>> 8) & 0xff;
874 startbuf
[3] = (bfd_byte
)start
& 0xff;
875 if (! ihex_write_record (abfd
, 4, 0, 5, startbuf
))
880 if (! ihex_write_record (abfd
, 0, 0, 1, NULL
))
886 /* Set the architecture for the output file. The architecture is
887 irrelevant, so we ignore errors about unknown architectures. */
890 ihex_set_arch_mach (bfd
*abfd
,
891 enum bfd_architecture arch
,
894 if (! bfd_default_set_arch_mach (abfd
, arch
, mach
))
896 if (arch
!= bfd_arch_unknown
)
902 /* Get the size of the headers, for the linker. */
905 ihex_sizeof_headers (bfd
*abfd ATTRIBUTE_UNUSED
,
906 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
911 /* Some random definitions for the target vector. */
913 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup
914 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
915 #define ihex_new_section_hook _bfd_generic_new_section_hook
916 #define ihex_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
917 #define ihex_get_symtab_upper_bound bfd_0l
918 #define ihex_canonicalize_symtab ((long (*) (bfd *, asymbol **)) bfd_0l)
919 #define ihex_make_empty_symbol _bfd_generic_make_empty_symbol
920 #define ihex_print_symbol _bfd_nosymbols_print_symbol
921 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info
922 #define ihex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
923 #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
924 #define ihex_get_lineno _bfd_nosymbols_get_lineno
925 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line
926 #define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info
927 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
928 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
929 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
930 #define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
931 #define ihex_bfd_relax_section bfd_generic_relax_section
932 #define ihex_bfd_gc_sections bfd_generic_gc_sections
933 #define ihex_bfd_merge_sections bfd_generic_merge_sections
934 #define ihex_bfd_is_group_section bfd_generic_is_group_section
935 #define ihex_bfd_discard_group bfd_generic_discard_group
936 #define ihex_section_already_linked _bfd_generic_section_already_linked
937 #define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol
938 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
939 #define ihex_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
940 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
941 #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms
942 #define ihex_bfd_copy_link_hash_symbol_type \
943 _bfd_generic_copy_link_hash_symbol_type
944 #define ihex_bfd_final_link _bfd_generic_final_link
945 #define ihex_bfd_link_split_section _bfd_generic_link_split_section
947 /* The Intel Hex target vector. */
949 const bfd_target ihex_vec
=
952 bfd_target_ihex_flavour
,
953 BFD_ENDIAN_UNKNOWN
, /* Target byte order. */
954 BFD_ENDIAN_UNKNOWN
, /* Target headers byte order. */
955 0, /* Object flags. */
956 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
), /* Section flags. */
957 0, /* Leading underscore. */
958 ' ', /* AR_pad_char. */
959 16, /* AR_max_namelen. */
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. */
969 ihex_object_p
, /* bfd_check_format. */
976 _bfd_generic_mkarchive
,
979 { /* bfd_write_contents. */
981 ihex_write_object_contents
,
982 _bfd_write_archive_contents
,
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 (ihex
),
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
),