/src/binutils-gdb/bfd/ihex.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* BFD back-end for Intel Hex objects. |
2 | | Copyright (C) 1995-2025 Free Software Foundation, Inc. |
3 | | Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>. |
4 | | |
5 | | This file is part of BFD, the Binary File Descriptor library. |
6 | | |
7 | | This program is free software; you can redistribute it and/or modify |
8 | | it under the terms of the GNU General Public License as published by |
9 | | the Free Software Foundation; either version 3 of the License, or |
10 | | (at your option) any later version. |
11 | | |
12 | | This program is distributed in the hope that it will be useful, |
13 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | | GNU General Public License for more details. |
16 | | |
17 | | You should have received a copy of the GNU General Public License |
18 | | along with this program; if not, write to the Free Software |
19 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | | MA 02110-1301, USA. */ |
21 | | |
22 | | |
23 | | /* This is what Intel Hex files look like: |
24 | | |
25 | | 1. INTEL FORMATS |
26 | | |
27 | | A. Intel 1 |
28 | | |
29 | | 16-bit address-field format, for files 64k bytes in length or less. |
30 | | |
31 | | DATA RECORD |
32 | | Byte 1 Header = colon(:) |
33 | | 2..3 The number of data bytes in hex notation |
34 | | 4..5 High byte of the record load address |
35 | | 6..7 Low byte of the record load address |
36 | | 8..9 Record type, must be "00" |
37 | | 10..x Data bytes in hex notation: |
38 | | x = (number of bytes - 1) * 2 + 11 |
39 | | x+1..x+2 Checksum in hex notation |
40 | | x+3..x+4 Carriage return, line feed |
41 | | |
42 | | END RECORD |
43 | | Byte 1 Header = colon (:) |
44 | | 2..3 The byte count, must be "00" |
45 | | 4..7 Transfer-address (usually "0000") |
46 | | the jump-to address, execution start address |
47 | | 8..9 Record type, must be "01" |
48 | | 10..11 Checksum, in hex notation |
49 | | 12..13 Carriage return, line feed |
50 | | |
51 | | B. INTEL 2 |
52 | | |
53 | | MCS-86 format, using a 20-bit address for files larger than 64K bytes. |
54 | | |
55 | | DATA RECORD |
56 | | Byte 1 Header = colon (:) |
57 | | 2..3 The byte count of this record, hex notation |
58 | | 4..5 High byte of the record load address |
59 | | 6..7 Low byte of the record load address |
60 | | 8..9 Record type, must be "00" |
61 | | 10..x The data bytes in hex notation: |
62 | | x = (number of data bytes - 1) * 2 + 11 |
63 | | x+1..x+2 Checksum in hex notation |
64 | | x+3..x+4 Carriage return, line feed |
65 | | |
66 | | EXTENDED ADDRESS RECORD |
67 | | Byte 1 Header = colon(:) |
68 | | 2..3 The byte count, must be "02" |
69 | | 4..7 Load address, must be "0000" |
70 | | 8..9 Record type, must be "02" |
71 | | 10..11 High byte of the offset address |
72 | | 12..13 Low byte of the offset address |
73 | | 14..15 Checksum in hex notation |
74 | | 16..17 Carriage return, line feed |
75 | | |
76 | | The checksums are the two's complement of the 8-bit sum |
77 | | without carry of the byte count, offset address, and the |
78 | | record type. |
79 | | |
80 | | START ADDRESS RECORD |
81 | | Byte 1 Header = colon (:) |
82 | | 2..3 The byte count, must be "04" |
83 | | 4..7 Load address, must be "0000" |
84 | | 8..9 Record type, must be "03" |
85 | | 10..13 8086 CS value |
86 | | 14..17 8086 IP value |
87 | | 18..19 Checksum in hex notation |
88 | | 20..21 Carriage return, line feed |
89 | | |
90 | | Another document reports these additional types: |
91 | | |
92 | | EXTENDED LINEAR ADDRESS RECORD |
93 | | Byte 1 Header = colon (:) |
94 | | 2..3 The byte count, must be "02" |
95 | | 4..7 Load address, must be "0000" |
96 | | 8..9 Record type, must be "04" |
97 | | 10..13 Upper 16 bits of address of subsequent records |
98 | | 14..15 Checksum in hex notation |
99 | | 16..17 Carriage return, line feed |
100 | | |
101 | | START LINEAR ADDRESS RECORD |
102 | | Byte 1 Header = colon (:) |
103 | | 2..3 The byte count, must be "02" |
104 | | 4..7 Load address, must be "0000" |
105 | | 8..9 Record type, must be "05" |
106 | | 10..13 Upper 16 bits of start address |
107 | | 14..15 Checksum in hex notation |
108 | | 16..17 Carriage return, line feed |
109 | | |
110 | | The MRI compiler uses this, which is a repeat of type 5: |
111 | | |
112 | | EXTENDED START RECORD |
113 | | Byte 1 Header = colon (:) |
114 | | 2..3 The byte count, must be "04" |
115 | | 4..7 Load address, must be "0000" |
116 | | 8..9 Record type, must be "05" |
117 | | 10..13 Upper 16 bits of start address |
118 | | 14..17 Lower 16 bits of start address |
119 | | 18..19 Checksum in hex notation |
120 | | 20..21 Carriage return, line feed. */ |
121 | | |
122 | | #include "sysdep.h" |
123 | | #include "bfd.h" |
124 | | #include "libbfd.h" |
125 | | #include "libiberty.h" |
126 | | #include "safe-ctype.h" |
127 | | |
128 | | /* The number of bytes we put on one line during output. */ |
129 | | |
130 | 0 | #define CHUNK 16 |
131 | | |
132 | | /* Macros for converting between hex and binary. */ |
133 | | |
134 | 74.9k | #define NIBBLE(x) (hex_value (x)) |
135 | 42.3k | #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) |
136 | 6.14k | #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) |
137 | 115k | #define ISHEX(x) (hex_p (x)) |
138 | | |
139 | | /* When we write out an ihex value, the values can not be output as |
140 | | they are seen. Instead, we hold them in memory in this structure. */ |
141 | | |
142 | | struct ihex_data_list |
143 | | { |
144 | | struct ihex_data_list *next; |
145 | | bfd_byte *data; |
146 | | bfd_vma where; |
147 | | bfd_size_type size; |
148 | | }; |
149 | | |
150 | | /* The ihex tdata information. */ |
151 | | |
152 | | struct ihex_data_struct |
153 | | { |
154 | | struct ihex_data_list *head; |
155 | | struct ihex_data_list *tail; |
156 | | }; |
157 | | |
158 | | /* Initialize by filling in the hex conversion array. */ |
159 | | |
160 | | static void |
161 | | ihex_init (void) |
162 | 3.41M | { |
163 | 3.41M | static bool inited; |
164 | | |
165 | 3.41M | if (! inited) |
166 | 11 | { |
167 | 11 | inited = true; |
168 | 11 | hex_init (); |
169 | 11 | } |
170 | 3.41M | } |
171 | | |
172 | | /* Create an ihex object. */ |
173 | | |
174 | | static bool |
175 | | ihex_mkobject (bfd *abfd) |
176 | 5.39k | { |
177 | 5.39k | struct ihex_data_struct *tdata; |
178 | | |
179 | 5.39k | tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata)); |
180 | 5.39k | if (tdata == NULL) |
181 | 0 | return false; |
182 | | |
183 | 5.39k | abfd->tdata.ihex_data = tdata; |
184 | 5.39k | tdata->head = NULL; |
185 | 5.39k | tdata->tail = NULL; |
186 | 5.39k | return true; |
187 | 5.39k | } |
188 | | |
189 | | /* Read a byte from a BFD. Set *ERRORPTR if an error occurred. |
190 | | Return EOF on error or end of file. */ |
191 | | |
192 | | static inline int |
193 | | ihex_get_byte (bfd *abfd, bool *errorptr) |
194 | 14.0k | { |
195 | 14.0k | bfd_byte c; |
196 | | |
197 | 14.0k | if (bfd_read (&c, 1, abfd) != 1) |
198 | 1.99k | { |
199 | 1.99k | if (bfd_get_error () != bfd_error_file_truncated) |
200 | 311 | *errorptr = true; |
201 | 1.99k | return EOF; |
202 | 1.99k | } |
203 | | |
204 | 12.0k | return c & 0xff; |
205 | 14.0k | } |
206 | | |
207 | | /* Report a problem in an Intel Hex file. */ |
208 | | |
209 | | static void |
210 | | ihex_bad_byte (bfd *abfd, unsigned int lineno, int c, bool error) |
211 | 1.84k | { |
212 | 1.84k | if (c == EOF) |
213 | 0 | { |
214 | 0 | if (! error) |
215 | 0 | bfd_set_error (bfd_error_file_truncated); |
216 | 0 | } |
217 | 1.84k | else |
218 | 1.84k | { |
219 | 1.84k | char buf[10]; |
220 | | |
221 | 1.84k | if (! ISPRINT (c)) |
222 | 975 | sprintf (buf, "\\%03o", (unsigned int) c & 0xff); |
223 | 871 | else |
224 | 871 | { |
225 | 871 | buf[0] = c; |
226 | 871 | buf[1] = '\0'; |
227 | 871 | } |
228 | 1.84k | _bfd_error_handler |
229 | | /* xgettext:c-format */ |
230 | 1.84k | (_("%pB:%d: unexpected character `%s' in Intel Hex file"), |
231 | 1.84k | abfd, lineno, buf); |
232 | 1.84k | bfd_set_error (bfd_error_bad_value); |
233 | 1.84k | } |
234 | 1.84k | } |
235 | | |
236 | | /* Read an Intel hex file and turn it into sections. We create a new |
237 | | section for each contiguous set of bytes. */ |
238 | | |
239 | | static bool |
240 | | ihex_scan (bfd *abfd) |
241 | 5.39k | { |
242 | 5.39k | bfd_vma segbase; |
243 | 5.39k | bfd_vma extbase; |
244 | 5.39k | asection *sec; |
245 | 5.39k | unsigned int lineno; |
246 | 5.39k | bool error; |
247 | 5.39k | bfd_byte *buf = NULL; |
248 | 5.39k | size_t bufsize; |
249 | 5.39k | int c; |
250 | | |
251 | 5.39k | if (bfd_seek (abfd, 0, SEEK_SET) != 0) |
252 | 0 | goto error_return; |
253 | | |
254 | 5.39k | abfd->start_address = 0; |
255 | | |
256 | 5.39k | segbase = 0; |
257 | 5.39k | extbase = 0; |
258 | 5.39k | sec = NULL; |
259 | 5.39k | lineno = 1; |
260 | 5.39k | error = false; |
261 | 5.39k | bufsize = 0; |
262 | | |
263 | 14.0k | while ((c = ihex_get_byte (abfd, &error)) != EOF) |
264 | 12.0k | { |
265 | 12.0k | if (c == '\r') |
266 | 1.82k | continue; |
267 | 10.2k | else if (c == '\n') |
268 | 3.02k | { |
269 | 3.02k | ++lineno; |
270 | 3.02k | continue; |
271 | 3.02k | } |
272 | 7.24k | else if (c != ':') |
273 | 776 | { |
274 | 776 | ihex_bad_byte (abfd, lineno, c, error); |
275 | 776 | goto error_return; |
276 | 776 | } |
277 | 6.46k | else |
278 | 6.46k | { |
279 | 6.46k | file_ptr pos; |
280 | 6.46k | unsigned char hdr[8]; |
281 | 6.46k | unsigned int i; |
282 | 6.46k | unsigned int len; |
283 | 6.46k | bfd_vma addr; |
284 | 6.46k | unsigned int type; |
285 | 6.46k | unsigned int chars; |
286 | 6.46k | unsigned int chksum; |
287 | | |
288 | | /* This is a data record. */ |
289 | 6.46k | pos = bfd_tell (abfd) - 1; |
290 | | |
291 | | /* Read the header bytes. */ |
292 | 6.46k | if (bfd_read (hdr, 8, abfd) != 8) |
293 | 224 | goto error_return; |
294 | | |
295 | 54.5k | for (i = 0; i < 8; i++) |
296 | 48.5k | { |
297 | 48.5k | if (! ISHEX (hdr[i])) |
298 | 227 | { |
299 | 227 | ihex_bad_byte (abfd, lineno, hdr[i], error); |
300 | 227 | goto error_return; |
301 | 227 | } |
302 | 48.5k | } |
303 | | |
304 | 6.01k | len = HEX2 (hdr); |
305 | 6.01k | addr = HEX4 (hdr + 2); |
306 | 6.01k | type = HEX2 (hdr + 6); |
307 | | |
308 | | /* Read the data bytes. */ |
309 | 6.01k | chars = len * 2 + 2; |
310 | 6.01k | if (chars >= bufsize) |
311 | 5.90k | { |
312 | 5.90k | buf = bfd_realloc (buf, chars); |
313 | 5.90k | if (buf == NULL) |
314 | 0 | goto error_return; |
315 | 5.90k | bufsize = chars; |
316 | 5.90k | } |
317 | | |
318 | 6.01k | if (bfd_read (buf, chars, abfd) != chars) |
319 | 330 | goto error_return; |
320 | | |
321 | 20.6k | for (i = 0; i < chars; i++) |
322 | 15.7k | { |
323 | 15.7k | if (! ISHEX (buf[i])) |
324 | 843 | { |
325 | 843 | ihex_bad_byte (abfd, lineno, buf[i], error); |
326 | 843 | goto error_return; |
327 | 843 | } |
328 | 15.7k | } |
329 | | |
330 | | /* Check the checksum. */ |
331 | 4.84k | chksum = len + addr + (addr >> 8) + type; |
332 | 6.96k | for (i = 0; i < len; i++) |
333 | 2.12k | chksum += HEX2 (buf + 2 * i); |
334 | 4.84k | if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) |
335 | 347 | { |
336 | 347 | _bfd_error_handler |
337 | | /* xgettext:c-format */ |
338 | 347 | (_("%pB:%u: bad checksum in Intel Hex file (expected %u, found %u)"), |
339 | 347 | abfd, lineno, |
340 | 347 | (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); |
341 | 347 | bfd_set_error (bfd_error_bad_value); |
342 | 347 | goto error_return; |
343 | 347 | } |
344 | | |
345 | 4.49k | switch (type) |
346 | 4.49k | { |
347 | 3.70k | case 0: |
348 | | /* This is a data record. */ |
349 | 3.70k | if (sec != NULL |
350 | 3.70k | && sec->vma + sec->size == extbase + segbase + addr) |
351 | 0 | { |
352 | | /* This data goes at the end of the section we are |
353 | | currently building. */ |
354 | 0 | sec->size += len; |
355 | 0 | } |
356 | 3.70k | else if (len > 0) |
357 | 78 | { |
358 | 78 | char secbuf[20]; |
359 | 78 | char *secname; |
360 | 78 | size_t amt; |
361 | 78 | flagword flags; |
362 | | |
363 | 78 | sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); |
364 | 78 | amt = strlen (secbuf) + 1; |
365 | 78 | secname = (char *) bfd_alloc (abfd, amt); |
366 | 78 | if (secname == NULL) |
367 | 0 | goto error_return; |
368 | 78 | strcpy (secname, secbuf); |
369 | 78 | flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; |
370 | 78 | sec = bfd_make_section_with_flags (abfd, secname, flags); |
371 | 78 | if (sec == NULL) |
372 | 0 | goto error_return; |
373 | 78 | sec->vma = extbase + segbase + addr; |
374 | 78 | sec->lma = extbase + segbase + addr; |
375 | 78 | sec->size = len; |
376 | 78 | sec->filepos = pos; |
377 | 78 | } |
378 | 3.70k | break; |
379 | | |
380 | 3.70k | case 1: |
381 | | /* An end record. */ |
382 | 341 | if (abfd->start_address == 0) |
383 | 341 | abfd->start_address = addr; |
384 | 341 | free (buf); |
385 | 341 | return true; |
386 | | |
387 | 215 | case 2: |
388 | | /* An extended address record. */ |
389 | 215 | if (len != 2) |
390 | 105 | { |
391 | 105 | _bfd_error_handler |
392 | | /* xgettext:c-format */ |
393 | 105 | (_("%pB:%u: bad extended address record length in Intel Hex file"), |
394 | 105 | abfd, lineno); |
395 | 105 | bfd_set_error (bfd_error_bad_value); |
396 | 105 | goto error_return; |
397 | 105 | } |
398 | | |
399 | 110 | segbase = HEX4 (buf) << 4; |
400 | | |
401 | 110 | sec = NULL; |
402 | | |
403 | 110 | break; |
404 | | |
405 | 2 | case 3: |
406 | | /* An extended start address record. */ |
407 | 2 | if (len != 4) |
408 | 2 | { |
409 | 2 | _bfd_error_handler |
410 | | /* xgettext:c-format */ |
411 | 2 | (_("%pB:%u: bad extended start address length in Intel Hex file"), |
412 | 2 | abfd, lineno); |
413 | 2 | bfd_set_error (bfd_error_bad_value); |
414 | 2 | goto error_return; |
415 | 2 | } |
416 | | |
417 | 0 | abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); |
418 | |
|
419 | 0 | sec = NULL; |
420 | |
|
421 | 0 | break; |
422 | | |
423 | 116 | case 4: |
424 | | /* An extended linear address record. */ |
425 | 116 | if (len != 2) |
426 | 104 | { |
427 | 104 | _bfd_error_handler |
428 | | /* xgettext:c-format */ |
429 | 104 | (_("%pB:%u: bad extended linear address record length in Intel Hex file"), |
430 | 104 | abfd, lineno); |
431 | 104 | bfd_set_error (bfd_error_bad_value); |
432 | 104 | goto error_return; |
433 | 104 | } |
434 | | |
435 | 12 | extbase = HEX4 (buf) << 16; |
436 | | |
437 | 12 | sec = NULL; |
438 | | |
439 | 12 | break; |
440 | | |
441 | 13 | case 5: |
442 | | /* An extended linear start address record. */ |
443 | 13 | if (len != 2 && len != 4) |
444 | 3 | { |
445 | 3 | _bfd_error_handler |
446 | | /* xgettext:c-format */ |
447 | 3 | (_("%pB:%u: bad extended linear start address length in Intel Hex file"), |
448 | 3 | abfd, lineno); |
449 | 3 | bfd_set_error (bfd_error_bad_value); |
450 | 3 | goto error_return; |
451 | 3 | } |
452 | | |
453 | 10 | if (len == 2) |
454 | 10 | abfd->start_address += HEX4 (buf) << 16; |
455 | 0 | else |
456 | 0 | abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); |
457 | | |
458 | 10 | sec = NULL; |
459 | | |
460 | 10 | break; |
461 | | |
462 | 105 | default: |
463 | 105 | _bfd_error_handler |
464 | | /* xgettext:c-format */ |
465 | 105 | (_("%pB:%u: unrecognized ihex type %u in Intel Hex file"), |
466 | 105 | abfd, lineno, type); |
467 | 105 | bfd_set_error (bfd_error_bad_value); |
468 | 105 | goto error_return; |
469 | 4.49k | } |
470 | 4.49k | } |
471 | 12.0k | } |
472 | | |
473 | 1.99k | if (error) |
474 | 311 | goto error_return; |
475 | | |
476 | 1.67k | free (buf); |
477 | 1.67k | return true; |
478 | | |
479 | 3.37k | error_return: |
480 | 3.37k | free (buf); |
481 | 3.37k | return false; |
482 | 1.99k | } |
483 | | |
484 | | /* Try to recognize an Intel Hex file. */ |
485 | | |
486 | | static bfd_cleanup |
487 | | ihex_object_p (bfd *abfd) |
488 | 3.41M | { |
489 | 3.41M | bfd_byte b[9]; |
490 | 3.41M | unsigned int i; |
491 | 3.41M | unsigned int type; |
492 | | |
493 | 3.41M | ihex_init (); |
494 | | |
495 | 3.41M | if (bfd_seek (abfd, 0, SEEK_SET) != 0) |
496 | 0 | return NULL; |
497 | 3.41M | if (bfd_read (b, 9, abfd) != 9) |
498 | 14.4k | { |
499 | 14.4k | if (bfd_get_error () == bfd_error_file_truncated) |
500 | 9.43k | bfd_set_error (bfd_error_wrong_format); |
501 | 14.4k | return NULL; |
502 | 14.4k | } |
503 | | |
504 | 3.39M | if (b[0] != ':') |
505 | 3.39M | { |
506 | 3.39M | bfd_set_error (bfd_error_wrong_format); |
507 | 3.39M | return NULL; |
508 | 3.39M | } |
509 | | |
510 | 57.1k | for (i = 1; i < 9; i++) |
511 | 51.3k | { |
512 | 51.3k | if (! ISHEX (b[i])) |
513 | 1.04k | { |
514 | 1.04k | bfd_set_error (bfd_error_wrong_format); |
515 | 1.04k | return NULL; |
516 | 1.04k | } |
517 | 51.3k | } |
518 | | |
519 | 5.81k | type = HEX2 (b + 7); |
520 | 5.81k | if (type > 5) |
521 | 418 | { |
522 | 418 | bfd_set_error (bfd_error_wrong_format); |
523 | 418 | return NULL; |
524 | 418 | } |
525 | | |
526 | | /* OK, it looks like it really is an Intel Hex file. */ |
527 | 5.39k | if (!ihex_mkobject (abfd)) |
528 | 0 | return NULL; |
529 | | |
530 | 5.39k | if (!ihex_scan (abfd)) |
531 | 3.37k | { |
532 | 3.37k | bfd_release (abfd, abfd->tdata.any); |
533 | 3.37k | return NULL; |
534 | 3.37k | } |
535 | | |
536 | 2.02k | return _bfd_no_cleanup; |
537 | 5.39k | } |
538 | | |
539 | | /* Read the contents of a section in an Intel Hex file. */ |
540 | | |
541 | | static bool |
542 | | ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents) |
543 | 1 | { |
544 | 1 | int c; |
545 | 1 | bfd_byte *p; |
546 | 1 | bfd_byte *buf = NULL; |
547 | 1 | size_t bufsize; |
548 | 1 | bool error; |
549 | | |
550 | 1 | if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) |
551 | 0 | goto error_return; |
552 | | |
553 | 1 | p = contents; |
554 | 1 | bufsize = 0; |
555 | 1 | error = false; |
556 | 1 | while ((c = ihex_get_byte (abfd, &error)) != EOF) |
557 | 1 | { |
558 | 1 | unsigned char hdr[8]; |
559 | 1 | unsigned int len; |
560 | 1 | unsigned int type; |
561 | 1 | unsigned int i; |
562 | | |
563 | 1 | if (c == '\r' || c == '\n') |
564 | 0 | continue; |
565 | | |
566 | | /* This is called after ihex_scan has succeeded, so we ought to |
567 | | know the exact format. */ |
568 | 1 | BFD_ASSERT (c == ':'); |
569 | | |
570 | 1 | if (bfd_read (hdr, 8, abfd) != 8) |
571 | 0 | goto error_return; |
572 | | |
573 | 1 | len = HEX2 (hdr); |
574 | 1 | type = HEX2 (hdr + 6); |
575 | | |
576 | | /* We should only see type 0 records here. */ |
577 | 1 | if (type != 0) |
578 | 0 | { |
579 | 0 | _bfd_error_handler |
580 | 0 | (_("%pB: internal error in ihex_read_section"), abfd); |
581 | 0 | bfd_set_error (bfd_error_bad_value); |
582 | 0 | goto error_return; |
583 | 0 | } |
584 | | |
585 | 1 | if (len * 2 > bufsize) |
586 | 1 | { |
587 | 1 | buf = bfd_realloc (buf, len * 2); |
588 | 1 | if (buf == NULL) |
589 | 0 | goto error_return; |
590 | 1 | bufsize = len * 2; |
591 | 1 | } |
592 | | |
593 | 1 | if (bfd_read (buf, len * 2, abfd) != len * 2) |
594 | 0 | goto error_return; |
595 | | |
596 | 3 | for (i = 0; i < len; i++) |
597 | 2 | *p++ = HEX2 (buf + 2 * i); |
598 | 1 | if ((bfd_size_type) (p - contents) >= section->size) |
599 | 1 | { |
600 | | /* We've read everything in the section. */ |
601 | 1 | free (buf); |
602 | 1 | return true; |
603 | 1 | } |
604 | | |
605 | | /* Skip the checksum. */ |
606 | 0 | if (bfd_read (buf, 2, abfd) != 2) |
607 | 0 | goto error_return; |
608 | 0 | } |
609 | | |
610 | 0 | if ((bfd_size_type) (p - contents) < section->size) |
611 | 0 | { |
612 | 0 | _bfd_error_handler |
613 | 0 | (_("%pB: bad section length in ihex_read_section"), abfd); |
614 | 0 | bfd_set_error (bfd_error_bad_value); |
615 | 0 | goto error_return; |
616 | 0 | } |
617 | | |
618 | 0 | free (buf); |
619 | 0 | return true; |
620 | | |
621 | 0 | error_return: |
622 | 0 | free (buf); |
623 | 0 | return false; |
624 | 0 | } |
625 | | |
626 | | /* Get the contents of a section in an Intel Hex file. */ |
627 | | |
628 | | static bool |
629 | | ihex_get_section_contents (bfd *abfd, |
630 | | asection *section, |
631 | | void * location, |
632 | | file_ptr offset, |
633 | | bfd_size_type count) |
634 | 1 | { |
635 | 1 | if (section->used_by_bfd == NULL) |
636 | 1 | { |
637 | 1 | section->used_by_bfd = bfd_alloc (abfd, section->size); |
638 | 1 | if (section->used_by_bfd == NULL) |
639 | 0 | return false; |
640 | 1 | if (! ihex_read_section (abfd, section, |
641 | 1 | (bfd_byte *) section->used_by_bfd)) |
642 | 0 | return false; |
643 | 1 | } |
644 | | |
645 | 1 | memcpy (location, (bfd_byte *) section->used_by_bfd + offset, |
646 | 1 | (size_t) count); |
647 | | |
648 | 1 | return true; |
649 | 1 | } |
650 | | |
651 | | /* Set the contents of a section in an Intel Hex file. */ |
652 | | |
653 | | static bool |
654 | | ihex_set_section_contents (bfd *abfd, |
655 | | asection *section, |
656 | | const void * location, |
657 | | file_ptr offset, |
658 | | bfd_size_type count) |
659 | 0 | { |
660 | 0 | struct ihex_data_list *n; |
661 | 0 | bfd_byte *data; |
662 | 0 | struct ihex_data_struct *tdata; |
663 | |
|
664 | 0 | if (count == 0 |
665 | 0 | || (section->flags & SEC_ALLOC) == 0 |
666 | 0 | || (section->flags & SEC_LOAD) == 0) |
667 | 0 | return true; |
668 | | |
669 | 0 | n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n)); |
670 | 0 | if (n == NULL) |
671 | 0 | return false; |
672 | | |
673 | 0 | data = (bfd_byte *) bfd_alloc (abfd, count); |
674 | 0 | if (data == NULL) |
675 | 0 | return false; |
676 | 0 | memcpy (data, location, (size_t) count); |
677 | |
|
678 | 0 | n->data = data; |
679 | 0 | n->where = section->lma + offset; |
680 | 0 | n->size = count; |
681 | | |
682 | | /* Sort the records by address. Optimize for the common case of |
683 | | adding a record to the end of the list. */ |
684 | 0 | tdata = abfd->tdata.ihex_data; |
685 | 0 | if (tdata->tail != NULL |
686 | 0 | && n->where >= tdata->tail->where) |
687 | 0 | { |
688 | 0 | tdata->tail->next = n; |
689 | 0 | n->next = NULL; |
690 | 0 | tdata->tail = n; |
691 | 0 | } |
692 | 0 | else |
693 | 0 | { |
694 | 0 | struct ihex_data_list **pp; |
695 | |
|
696 | 0 | for (pp = &tdata->head; |
697 | 0 | *pp != NULL && (*pp)->where < n->where; |
698 | 0 | pp = &(*pp)->next) |
699 | 0 | ; |
700 | 0 | n->next = *pp; |
701 | 0 | *pp = n; |
702 | 0 | if (n->next == NULL) |
703 | 0 | tdata->tail = n; |
704 | 0 | } |
705 | |
|
706 | 0 | return true; |
707 | 0 | } |
708 | | |
709 | | /* Write a record out to an Intel Hex file. */ |
710 | | |
711 | | static bool |
712 | | ihex_write_record (bfd *abfd, |
713 | | size_t count, |
714 | | unsigned int addr, |
715 | | unsigned int type, |
716 | | bfd_byte *data) |
717 | 0 | { |
718 | 0 | static const char digs[] = "0123456789ABCDEF"; |
719 | 0 | char buf[9 + CHUNK * 2 + 4]; |
720 | 0 | char *p; |
721 | 0 | unsigned int chksum; |
722 | 0 | unsigned int i; |
723 | 0 | size_t total; |
724 | |
|
725 | 0 | #define TOHEX(buf, v) \ |
726 | 0 | ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) |
727 | |
|
728 | 0 | buf[0] = ':'; |
729 | 0 | TOHEX (buf + 1, count); |
730 | 0 | TOHEX (buf + 3, (addr >> 8) & 0xff); |
731 | 0 | TOHEX (buf + 5, addr & 0xff); |
732 | 0 | TOHEX (buf + 7, type); |
733 | |
|
734 | 0 | chksum = count + addr + (addr >> 8) + type; |
735 | |
|
736 | 0 | for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) |
737 | 0 | { |
738 | 0 | TOHEX (p, *data); |
739 | 0 | chksum += *data; |
740 | 0 | } |
741 | |
|
742 | 0 | TOHEX (p, (- chksum) & 0xff); |
743 | 0 | p[2] = '\r'; |
744 | 0 | p[3] = '\n'; |
745 | |
|
746 | 0 | total = 9 + count * 2 + 4; |
747 | 0 | if (bfd_write (buf, total, abfd) != total) |
748 | 0 | return false; |
749 | | |
750 | 0 | return true; |
751 | 0 | } |
752 | | |
753 | | /* Write out an Intel Hex file. */ |
754 | | |
755 | | static bool |
756 | | ihex_write_object_contents (bfd *abfd) |
757 | 0 | { |
758 | 0 | bfd_vma segbase; |
759 | 0 | bfd_vma extbase; |
760 | 0 | struct ihex_data_list *l; |
761 | |
|
762 | 0 | segbase = 0; |
763 | 0 | extbase = 0; |
764 | 0 | for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) |
765 | 0 | { |
766 | 0 | bfd_vma where; |
767 | 0 | bfd_byte *p; |
768 | 0 | bfd_size_type count; |
769 | |
|
770 | 0 | where = l->where; |
771 | |
|
772 | 0 | #ifdef BFD64 |
773 | | /* IHex only supports 32-bit addresses, and we want to check |
774 | | that 64-bit addresses are in range. This isn't quite as |
775 | | obvious as it may seem, since some targets have 32-bit |
776 | | addresses that are sign extended to 64 bits. So complain |
777 | | only if addresses overflow both unsigned and signed 32-bit |
778 | | integers. */ |
779 | 0 | if (where > 0xffffffff |
780 | 0 | && where + 0x80000000 > 0xffffffff) |
781 | 0 | { |
782 | 0 | _bfd_error_handler |
783 | | /* xgettext:c-format */ |
784 | 0 | (_("%pB 64-bit address %#" PRIx64 |
785 | 0 | " out of range for Intel Hex file"), |
786 | 0 | abfd, (uint64_t) where); |
787 | 0 | bfd_set_error (bfd_error_bad_value); |
788 | 0 | return false; |
789 | 0 | } |
790 | 0 | where &= 0xffffffff; |
791 | 0 | #endif |
792 | |
|
793 | 0 | p = l->data; |
794 | 0 | count = l->size; |
795 | |
|
796 | 0 | while (count > 0) |
797 | 0 | { |
798 | 0 | size_t now; |
799 | 0 | unsigned int rec_addr; |
800 | |
|
801 | 0 | now = count; |
802 | 0 | if (count > CHUNK) |
803 | 0 | now = CHUNK; |
804 | |
|
805 | 0 | if (where < extbase |
806 | 0 | || where - extbase < segbase |
807 | 0 | || where - extbase - segbase > 0xffff) |
808 | 0 | { |
809 | 0 | bfd_byte addr[2]; |
810 | | |
811 | | /* We need a new base address. */ |
812 | 0 | if (extbase == 0 && where <= 0xfffff) |
813 | 0 | { |
814 | 0 | segbase = where & 0xf0000; |
815 | 0 | addr[0] = (bfd_byte)(segbase >> 12) & 0xff; |
816 | 0 | addr[1] = (bfd_byte)(segbase >> 4) & 0xff; |
817 | 0 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) |
818 | 0 | return false; |
819 | 0 | } |
820 | 0 | else |
821 | 0 | { |
822 | | /* The extended address record and the extended |
823 | | linear address record are combined, at least by |
824 | | some readers. We need an extended linear address |
825 | | record here, so if we've already written out an |
826 | | extended address record, zero it out to avoid |
827 | | confusion. */ |
828 | 0 | if (segbase != 0) |
829 | 0 | { |
830 | 0 | addr[0] = 0; |
831 | 0 | addr[1] = 0; |
832 | 0 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) |
833 | 0 | return false; |
834 | 0 | segbase = 0; |
835 | 0 | } |
836 | | |
837 | 0 | extbase = where & 0xffff0000; |
838 | 0 | if (where > extbase + 0xffff) |
839 | 0 | { |
840 | 0 | _bfd_error_handler |
841 | | /* xgettext:c-format */ |
842 | 0 | (_("%pB: address %#" PRIx64 |
843 | 0 | " out of range for Intel Hex file"), |
844 | 0 | abfd, (uint64_t) where); |
845 | 0 | bfd_set_error (bfd_error_bad_value); |
846 | 0 | return false; |
847 | 0 | } |
848 | 0 | addr[0] = (bfd_byte)(extbase >> 24) & 0xff; |
849 | 0 | addr[1] = (bfd_byte)(extbase >> 16) & 0xff; |
850 | 0 | if (! ihex_write_record (abfd, 2, 0, 4, addr)) |
851 | 0 | return false; |
852 | 0 | } |
853 | 0 | } |
854 | | |
855 | 0 | rec_addr = where - (extbase + segbase); |
856 | | |
857 | | /* Output records shouldn't cross 64K boundaries. */ |
858 | 0 | if (rec_addr + now > 0xffff) |
859 | 0 | now = 0x10000 - rec_addr; |
860 | |
|
861 | 0 | if (! ihex_write_record (abfd, now, rec_addr, 0, p)) |
862 | 0 | return false; |
863 | | |
864 | 0 | where += now; |
865 | 0 | p += now; |
866 | 0 | count -= now; |
867 | 0 | } |
868 | 0 | } |
869 | | |
870 | 0 | if (abfd->start_address != 0) |
871 | 0 | { |
872 | 0 | bfd_vma start; |
873 | 0 | bfd_byte startbuf[4]; |
874 | |
|
875 | 0 | start = abfd->start_address; |
876 | |
|
877 | 0 | if (start <= 0xfffff) |
878 | 0 | { |
879 | 0 | startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff; |
880 | 0 | startbuf[1] = 0; |
881 | 0 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; |
882 | 0 | startbuf[3] = (bfd_byte)start & 0xff; |
883 | 0 | if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) |
884 | 0 | return false; |
885 | 0 | } |
886 | 0 | else |
887 | 0 | { |
888 | 0 | startbuf[0] = (bfd_byte)(start >> 24) & 0xff; |
889 | 0 | startbuf[1] = (bfd_byte)(start >> 16) & 0xff; |
890 | 0 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; |
891 | 0 | startbuf[3] = (bfd_byte)start & 0xff; |
892 | 0 | if (! ihex_write_record (abfd, 4, 0, 5, startbuf)) |
893 | 0 | return false; |
894 | 0 | } |
895 | 0 | } |
896 | | |
897 | 0 | if (! ihex_write_record (abfd, 0, 0, 1, NULL)) |
898 | 0 | return false; |
899 | | |
900 | 0 | return true; |
901 | 0 | } |
902 | | |
903 | | /* Set the architecture for the output file. The architecture is |
904 | | irrelevant, so we ignore errors about unknown architectures. */ |
905 | | |
906 | | static bool |
907 | | ihex_set_arch_mach (bfd *abfd, |
908 | | enum bfd_architecture arch, |
909 | | unsigned long mach) |
910 | 0 | { |
911 | 0 | if (! bfd_default_set_arch_mach (abfd, arch, mach)) |
912 | 0 | { |
913 | 0 | if (arch != bfd_arch_unknown) |
914 | 0 | return false; |
915 | 0 | } |
916 | 0 | return true; |
917 | 0 | } |
918 | | |
919 | | /* Some random definitions for the target vector. */ |
920 | | |
921 | | #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup |
922 | | #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
923 | | #define ihex_new_section_hook _bfd_generic_new_section_hook |
924 | | #define ihex_sizeof_headers _bfd_nolink_sizeof_headers |
925 | | #define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
926 | | #define ihex_bfd_relax_section bfd_generic_relax_section |
927 | | #define ihex_bfd_gc_sections bfd_generic_gc_sections |
928 | | #define ihex_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
929 | | #define ihex_bfd_merge_sections bfd_generic_merge_sections |
930 | | #define ihex_bfd_is_group_section bfd_generic_is_group_section |
931 | | #define ihex_bfd_group_name bfd_generic_group_name |
932 | | #define ihex_bfd_discard_group bfd_generic_discard_group |
933 | | #define ihex_section_already_linked _bfd_generic_section_already_linked |
934 | | #define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol |
935 | | #define ihex_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
936 | | #define ihex_bfd_define_start_stop bfd_generic_define_start_stop |
937 | | #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
938 | | #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols |
939 | | #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms |
940 | | #define ihex_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
941 | | #define ihex_bfd_final_link _bfd_generic_final_link |
942 | | #define ihex_bfd_link_split_section _bfd_generic_link_split_section |
943 | | #define ihex_bfd_link_check_relocs _bfd_generic_link_check_relocs |
944 | | |
945 | | /* The Intel Hex target vector. */ |
946 | | |
947 | | const bfd_target ihex_vec = |
948 | | { |
949 | | "ihex", /* Name. */ |
950 | | bfd_target_ihex_flavour, |
951 | | BFD_ENDIAN_UNKNOWN, /* Target byte order. */ |
952 | | BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ |
953 | | 0, /* Object flags. */ |
954 | | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */ |
955 | | 0, /* Leading underscore. */ |
956 | | ' ', /* AR_pad_char. */ |
957 | | 16, /* AR_max_namelen. */ |
958 | | 0, /* match priority. */ |
959 | | TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ |
960 | | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
961 | | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
962 | | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ |
963 | | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
964 | | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
965 | | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ |
966 | | |
967 | | { |
968 | | _bfd_dummy_target, |
969 | | ihex_object_p, /* bfd_check_format. */ |
970 | | _bfd_dummy_target, |
971 | | _bfd_dummy_target, |
972 | | }, |
973 | | { |
974 | | _bfd_bool_bfd_false_error, |
975 | | ihex_mkobject, |
976 | | _bfd_bool_bfd_false_error, |
977 | | _bfd_bool_bfd_false_error, |
978 | | }, |
979 | | { /* bfd_write_contents. */ |
980 | | _bfd_bool_bfd_false_error, |
981 | | ihex_write_object_contents, |
982 | | _bfd_bool_bfd_false_error, |
983 | | _bfd_bool_bfd_false_error, |
984 | | }, |
985 | | |
986 | | BFD_JUMP_TABLE_GENERIC (ihex), |
987 | | BFD_JUMP_TABLE_COPY (_bfd_generic), |
988 | | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
989 | | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
990 | | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
991 | | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
992 | | BFD_JUMP_TABLE_WRITE (ihex), |
993 | | BFD_JUMP_TABLE_LINK (ihex), |
994 | | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
995 | | |
996 | | NULL, |
997 | | |
998 | | NULL |
999 | | }; |