Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD back-end for Intel Hex objects. |
dc810e39 AM |
2 | Copyright 1995, 1996, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
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 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
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. | |
17 | ||
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* This is what Intel Hex files look like: | |
23 | ||
24 | 1. INTEL FORMATS | |
25 | ||
26 | A. Intel 1 | |
27 | ||
28 | 16-bit address-field format, for files 64k bytes in length or less. | |
29 | ||
30 | DATA RECORD | |
31 | Byte 1 Header = colon(:) | |
32 | 2..3 The number of data bytes in hex notation | |
33 | 4..5 High byte of the record load address | |
34 | 6..7 Low byte of the record load address | |
35 | 8..9 Record type, must be "00" | |
36 | 10..x Data bytes in hex notation: | |
37 | x = (number of bytes - 1) * 2 + 11 | |
38 | x+1..x+2 Checksum in hex notation | |
39 | x+3..x+4 Carriage return, line feed | |
40 | ||
41 | END RECORD | |
42 | Byte 1 Header = colon (:) | |
43 | 2..3 The byte count, must be "00" | |
44 | 4..7 Transfer-address (usually "0000") | |
45 | the jump-to address, execution start address | |
46 | 8..9 Record type, must be "01" | |
47 | 10..11 Checksum, in hex notation | |
48 | 12..13 Carriage return, line feed | |
49 | ||
50 | B. INTEL 2 | |
51 | ||
52 | MCS-86 format, using a 20-bit address for files larger than 64K bytes. | |
53 | ||
54 | DATA RECORD | |
55 | Byte 1 Header = colon (:) | |
56 | 2..3 The byte count of this record, hex notation | |
57 | 4..5 High byte of the record load address | |
58 | 6..7 Low byte of the record load address | |
59 | 8..9 Record type, must be "00" | |
60 | 10..x The data bytes in hex notation: | |
61 | x = (number of data bytes - 1) * 2 + 11 | |
62 | x+1..x+2 Checksum in hex notation | |
63 | x+3..x+4 Carriage return, line feed | |
64 | ||
65 | EXTENDED ADDRESS RECORD | |
66 | Byte 1 Header = colon(:) | |
67 | 2..3 The byte count, must be "02" | |
68 | 4..7 Load address, must be "0000" | |
69 | 8..9 Record type, must be "02" | |
70 | 10..11 High byte of the offset address | |
71 | 12..13 Low byte of the offset address | |
72 | 14..15 Checksum in hex notation | |
73 | 16..17 Carriage return, line feed | |
74 | ||
75 | The checksums are the two's complement of the 8-bit sum | |
76 | without carry of the byte count, offset address, and the | |
77 | record type. | |
78 | ||
79 | START ADDRESS RECORD | |
80 | Byte 1 Header = colon (:) | |
81 | 2..3 The byte count, must be "04" | |
82 | 4..7 Load address, must be "0000" | |
83 | 8..9 Record type, must be "03" | |
84 | 10..13 8086 CS value | |
85 | 14..17 8086 IP value | |
86 | 18..19 Checksum in hex notation | |
87 | 20..21 Carriage return, line feed | |
88 | ||
89 | Another document reports these additional types: | |
90 | ||
91 | EXTENDED LINEAR ADDRESS RECORD | |
92 | Byte 1 Header = colon (:) | |
93 | 2..3 The byte count, must be "02" | |
94 | 4..7 Load address, must be "0000" | |
95 | 8..9 Record type, must be "04" | |
96 | 10..13 Upper 16 bits of address of subsequent records | |
97 | 14..15 Checksum in hex notation | |
98 | 16..17 Carriage return, line feed | |
99 | ||
100 | START LINEAR ADDRESS RECORD | |
101 | Byte 1 Header = colon (:) | |
102 | 2..3 The byte count, must be "02" | |
103 | 4..7 Load address, must be "0000" | |
104 | 8..9 Record type, must be "05" | |
105 | 10..13 Upper 16 bits of start address | |
106 | 14..15 Checksum in hex notation | |
107 | 16..17 Carriage return, line feed | |
108 | ||
109 | The MRI compiler uses this, which is a repeat of type 5: | |
110 | ||
111 | EXTENDED START RECORD | |
112 | Byte 1 Header = colon (:) | |
113 | 2..3 The byte count, must be "04" | |
114 | 4..7 Load address, must be "0000" | |
115 | 8..9 Record type, must be "05" | |
116 | 10..13 Upper 16 bits of start address | |
117 | 14..17 Lower 16 bits of start address | |
118 | 18..19 Checksum in hex notation | |
119 | 20..21 Carriage return, line feed | |
120 | */ | |
121 | ||
122 | #include "bfd.h" | |
123 | #include "sysdep.h" | |
124 | #include "libbfd.h" | |
125 | #include "libiberty.h" | |
3882b010 | 126 | #include "safe-ctype.h" |
252b5132 RH |
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 | |
dc810e39 | 140 | PARAMS ((bfd *, size_t, unsigned int, unsigned int, bfd_byte *)); |
252b5132 RH |
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)); | |
146 | ||
147 | /* The number of bytes we put on one line during output. */ | |
148 | ||
65d7f9a6 | 149 | #define CHUNK 16 |
252b5132 RH |
150 | |
151 | /* Macros for converting between hex and binary. */ | |
152 | ||
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)) | |
157 | ||
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. */ | |
160 | ||
161 | struct ihex_data_list | |
162 | { | |
163 | struct ihex_data_list *next; | |
164 | bfd_byte *data; | |
165 | bfd_vma where; | |
166 | bfd_size_type size; | |
167 | }; | |
168 | ||
169 | /* The ihex tdata information. */ | |
170 | ||
171 | struct ihex_data_struct | |
172 | { | |
173 | struct ihex_data_list *head; | |
174 | struct ihex_data_list *tail; | |
175 | }; | |
176 | ||
177 | /* Initialize by filling in the hex conversion array. */ | |
178 | ||
179 | static void | |
180 | ihex_init () | |
181 | { | |
182 | static boolean inited; | |
183 | ||
184 | if (! inited) | |
185 | { | |
186 | inited = true; | |
187 | hex_init (); | |
188 | } | |
189 | } | |
190 | ||
191 | /* Create an ihex object. */ | |
192 | ||
193 | static boolean | |
194 | ihex_mkobject (abfd) | |
195 | bfd *abfd; | |
196 | { | |
197 | if (abfd->tdata.ihex_data == NULL) | |
198 | { | |
199 | struct ihex_data_struct *tdata; | |
dc810e39 | 200 | bfd_size_type amt = sizeof (struct ihex_data_struct); |
252b5132 | 201 | |
dc810e39 | 202 | tdata = (struct ihex_data_struct *) bfd_alloc (abfd, amt); |
252b5132 RH |
203 | if (tdata == NULL) |
204 | return false; | |
205 | abfd->tdata.ihex_data = tdata; | |
206 | tdata->head = NULL; | |
207 | tdata->tail = NULL; | |
208 | } | |
209 | ||
210 | return true; | |
211 | } | |
212 | ||
213 | /* Read a byte from a BFD. Set *ERRORPTR if an error occurred. | |
214 | Return EOF on error or end of file. */ | |
215 | ||
216 | static INLINE int | |
217 | ihex_get_byte (abfd, errorptr) | |
218 | bfd *abfd; | |
219 | boolean *errorptr; | |
220 | { | |
221 | bfd_byte c; | |
222 | ||
dc810e39 | 223 | if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1) |
252b5132 RH |
224 | { |
225 | if (bfd_get_error () != bfd_error_file_truncated) | |
226 | *errorptr = true; | |
227 | return EOF; | |
228 | } | |
229 | ||
230 | return (int) (c & 0xff); | |
231 | } | |
232 | ||
233 | /* Report a problem in an Intel Hex file. */ | |
234 | ||
235 | static void | |
236 | ihex_bad_byte (abfd, lineno, c, error) | |
237 | bfd *abfd; | |
238 | unsigned int lineno; | |
239 | int c; | |
240 | boolean error; | |
241 | { | |
242 | if (c == EOF) | |
243 | { | |
244 | if (! error) | |
245 | bfd_set_error (bfd_error_file_truncated); | |
246 | } | |
247 | else | |
248 | { | |
249 | char buf[10]; | |
250 | ||
3882b010 | 251 | if (! ISPRINT (c)) |
252b5132 RH |
252 | sprintf (buf, "\\%03o", (unsigned int) c); |
253 | else | |
254 | { | |
255 | buf[0] = c; | |
256 | buf[1] = '\0'; | |
257 | } | |
258 | (*_bfd_error_handler) | |
259 | (_("%s:%d: unexpected character `%s' in Intel Hex file\n"), | |
8f615d07 | 260 | bfd_archive_filename (abfd), lineno, buf); |
252b5132 RH |
261 | bfd_set_error (bfd_error_bad_value); |
262 | } | |
263 | } | |
264 | ||
265 | /* Read an Intel hex file and turn it into sections. We create a new | |
266 | section for each contiguous set of bytes. */ | |
267 | ||
268 | static boolean | |
269 | ihex_scan (abfd) | |
270 | bfd *abfd; | |
271 | { | |
272 | bfd_vma segbase; | |
273 | bfd_vma extbase; | |
274 | asection *sec; | |
dc810e39 | 275 | unsigned int lineno; |
252b5132 RH |
276 | boolean error; |
277 | bfd_byte *buf = NULL; | |
278 | size_t bufsize; | |
279 | int c; | |
280 | ||
281 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
282 | goto error_return; | |
283 | ||
284 | abfd->start_address = 0; | |
285 | ||
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) | |
293 | { | |
294 | if (c == '\r') | |
295 | continue; | |
296 | else if (c == '\n') | |
297 | { | |
298 | ++lineno; | |
299 | continue; | |
300 | } | |
301 | else if (c != ':') | |
302 | { | |
303 | ihex_bad_byte (abfd, lineno, c, error); | |
304 | goto error_return; | |
305 | } | |
306 | else | |
307 | { | |
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; | |
316 | ||
317 | /* This is a data record. */ | |
318 | ||
319 | pos = bfd_tell (abfd) - 1; | |
320 | ||
321 | /* Read the header bytes. */ | |
322 | ||
dc810e39 | 323 | if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
252b5132 RH |
324 | goto error_return; |
325 | ||
326 | for (i = 0; i < 8; i++) | |
327 | { | |
328 | if (! ISHEX (hdr[i])) | |
329 | { | |
330 | ihex_bad_byte (abfd, lineno, hdr[i], error); | |
331 | goto error_return; | |
332 | } | |
333 | } | |
334 | ||
335 | len = HEX2 (hdr); | |
336 | addr = HEX4 (hdr + 2); | |
337 | type = HEX2 (hdr + 6); | |
338 | ||
339 | /* Read the data bytes. */ | |
340 | ||
341 | chars = len * 2 + 2; | |
342 | if (chars >= bufsize) | |
343 | { | |
dc810e39 | 344 | buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars); |
252b5132 RH |
345 | if (buf == NULL) |
346 | goto error_return; | |
347 | bufsize = chars; | |
348 | } | |
349 | ||
dc810e39 | 350 | if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars) |
252b5132 RH |
351 | goto error_return; |
352 | ||
353 | for (i = 0; i < chars; i++) | |
354 | { | |
355 | if (! ISHEX (buf[i])) | |
356 | { | |
357 | ihex_bad_byte (abfd, lineno, hdr[i], error); | |
358 | goto error_return; | |
359 | } | |
360 | } | |
361 | ||
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)) | |
367 | { | |
368 | (*_bfd_error_handler) | |
dc810e39 | 369 | (_("%s:%u: bad checksum in Intel Hex file (expected %u, found %u)"), |
8f615d07 | 370 | bfd_archive_filename (abfd), lineno, |
252b5132 RH |
371 | (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); |
372 | bfd_set_error (bfd_error_bad_value); | |
373 | goto error_return; | |
374 | } | |
375 | ||
376 | switch (type) | |
377 | { | |
378 | case 0: | |
379 | /* This is a data record. */ | |
380 | if (sec != NULL | |
381 | && sec->vma + sec->_raw_size == extbase + segbase + addr) | |
382 | { | |
383 | /* This data goes at the end of the section we are | |
384 | currently building. */ | |
385 | sec->_raw_size += len; | |
386 | } | |
387 | else if (len > 0) | |
388 | { | |
389 | char secbuf[20]; | |
390 | char *secname; | |
dc810e39 | 391 | bfd_size_type amt; |
252b5132 RH |
392 | |
393 | sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); | |
dc810e39 AM |
394 | amt = strlen (secbuf) + 1; |
395 | secname = (char *) bfd_alloc (abfd, amt); | |
252b5132 RH |
396 | if (secname == NULL) |
397 | goto error_return; | |
398 | strcpy (secname, secbuf); | |
399 | sec = bfd_make_section (abfd, secname); | |
400 | if (sec == NULL) | |
401 | goto error_return; | |
402 | sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; | |
403 | sec->vma = extbase + segbase + addr; | |
404 | sec->lma = extbase + segbase + addr; | |
405 | sec->_raw_size = len; | |
406 | sec->filepos = pos; | |
407 | } | |
408 | break; | |
409 | ||
410 | case 1: | |
411 | /* An end record. */ | |
412 | if (abfd->start_address == 0) | |
413 | abfd->start_address = addr; | |
414 | if (buf != NULL) | |
415 | free (buf); | |
416 | return true; | |
417 | ||
418 | case 2: | |
419 | /* An extended address record. */ | |
420 | if (len != 2) | |
421 | { | |
422 | (*_bfd_error_handler) | |
dc810e39 | 423 | (_("%s:%u: bad extended address record length in Intel Hex file"), |
8f615d07 | 424 | bfd_archive_filename (abfd), lineno); |
252b5132 RH |
425 | bfd_set_error (bfd_error_bad_value); |
426 | goto error_return; | |
427 | } | |
428 | ||
429 | segbase = HEX4 (buf) << 4; | |
430 | ||
431 | sec = NULL; | |
432 | ||
433 | break; | |
434 | ||
435 | case 3: | |
436 | /* An extended start address record. */ | |
437 | if (len != 4) | |
438 | { | |
439 | (*_bfd_error_handler) | |
dc810e39 | 440 | (_("%s:%u: bad extended start address length in Intel Hex file"), |
8f615d07 | 441 | bfd_archive_filename (abfd), lineno); |
252b5132 RH |
442 | bfd_set_error (bfd_error_bad_value); |
443 | goto error_return; | |
444 | } | |
445 | ||
446 | abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); | |
447 | ||
448 | sec = NULL; | |
449 | ||
450 | break; | |
451 | ||
452 | case 4: | |
453 | /* An extended linear address record. */ | |
454 | if (len != 2) | |
455 | { | |
456 | (*_bfd_error_handler) | |
dc810e39 | 457 | (_("%s:%u: bad extended linear address record length in Intel Hex file"), |
8f615d07 | 458 | bfd_archive_filename (abfd), lineno); |
252b5132 RH |
459 | bfd_set_error (bfd_error_bad_value); |
460 | goto error_return; | |
461 | } | |
462 | ||
463 | extbase = HEX4 (buf) << 16; | |
464 | ||
465 | sec = NULL; | |
466 | ||
467 | break; | |
468 | ||
469 | case 5: | |
470 | /* An extended linear start address record. */ | |
471 | if (len != 2 && len != 4) | |
472 | { | |
473 | (*_bfd_error_handler) | |
dc810e39 | 474 | (_("%s:%u: bad extended linear start address length in Intel Hex file"), |
8f615d07 | 475 | bfd_archive_filename (abfd), lineno); |
252b5132 RH |
476 | bfd_set_error (bfd_error_bad_value); |
477 | goto error_return; | |
478 | } | |
479 | ||
480 | if (len == 2) | |
481 | abfd->start_address += HEX4 (buf) << 16; | |
482 | else | |
483 | abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); | |
484 | ||
485 | sec = NULL; | |
486 | ||
487 | break; | |
488 | ||
489 | default: | |
490 | (*_bfd_error_handler) | |
dc810e39 | 491 | (_("%s:%u: unrecognized ihex type %u in Intel Hex file\n"), |
8f615d07 | 492 | bfd_archive_filename (abfd), lineno, type); |
252b5132 RH |
493 | bfd_set_error (bfd_error_bad_value); |
494 | goto error_return; | |
495 | } | |
496 | } | |
497 | } | |
498 | ||
499 | if (error) | |
500 | goto error_return; | |
501 | ||
502 | if (buf != NULL) | |
503 | free (buf); | |
504 | ||
505 | return true; | |
506 | ||
507 | error_return: | |
508 | if (buf != NULL) | |
509 | free (buf); | |
510 | return false; | |
511 | } | |
512 | ||
513 | /* Try to recognize an Intel Hex file. */ | |
514 | ||
515 | static const bfd_target * | |
516 | ihex_object_p (abfd) | |
517 | bfd *abfd; | |
518 | { | |
519 | bfd_byte b[9]; | |
520 | unsigned int i; | |
521 | unsigned int type; | |
522 | ||
523 | ihex_init (); | |
524 | ||
525 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
526 | return NULL; | |
dc810e39 | 527 | if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9) |
252b5132 RH |
528 | { |
529 | if (bfd_get_error () == bfd_error_file_truncated) | |
530 | bfd_set_error (bfd_error_wrong_format); | |
531 | return NULL; | |
532 | } | |
533 | ||
534 | if (b[0] != ':') | |
535 | { | |
536 | bfd_set_error (bfd_error_wrong_format); | |
537 | return NULL; | |
538 | } | |
539 | ||
540 | for (i = 1; i < 9; i++) | |
541 | { | |
542 | if (! ISHEX (b[i])) | |
543 | { | |
544 | bfd_set_error (bfd_error_wrong_format); | |
545 | return NULL; | |
546 | } | |
547 | } | |
548 | ||
549 | type = HEX2 (b + 7); | |
550 | if (type > 5) | |
551 | { | |
552 | bfd_set_error (bfd_error_wrong_format); | |
553 | return NULL; | |
554 | } | |
555 | ||
556 | /* OK, it looks like it really is an Intel Hex file. */ | |
557 | ||
558 | if (! ihex_mkobject (abfd) | |
559 | || ! ihex_scan (abfd)) | |
560 | return NULL; | |
561 | ||
562 | return abfd->xvec; | |
563 | } | |
564 | ||
565 | /* Read the contents of a section in an Intel Hex file. */ | |
566 | ||
567 | static boolean | |
568 | ihex_read_section (abfd, section, contents) | |
569 | bfd *abfd; | |
570 | asection *section; | |
571 | bfd_byte *contents; | |
572 | { | |
573 | int c; | |
574 | bfd_byte *p; | |
575 | bfd_byte *buf = NULL; | |
576 | size_t bufsize; | |
577 | boolean error; | |
578 | ||
579 | if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) | |
580 | goto error_return; | |
581 | ||
582 | p = contents; | |
583 | bufsize = 0; | |
584 | error = false; | |
585 | while ((c = ihex_get_byte (abfd, &error)) != EOF) | |
586 | { | |
587 | char hdr[8]; | |
588 | unsigned int len; | |
589 | bfd_vma addr; | |
590 | unsigned int type; | |
591 | unsigned int i; | |
592 | ||
593 | if (c == '\r' || c == '\n') | |
594 | continue; | |
595 | ||
596 | /* This is called after ihex_scan has succeeded, so we ought to | |
597 | know the exact format. */ | |
598 | BFD_ASSERT (c == ':'); | |
599 | ||
dc810e39 | 600 | if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
252b5132 RH |
601 | goto error_return; |
602 | ||
603 | len = HEX2 (hdr); | |
604 | addr = HEX4 (hdr + 2); | |
605 | type = HEX2 (hdr + 6); | |
606 | ||
607 | /* We should only see type 0 records here. */ | |
608 | if (type != 0) | |
609 | { | |
610 | (*_bfd_error_handler) | |
611 | (_("%s: internal error in ihex_read_section"), | |
8f615d07 | 612 | bfd_archive_filename (abfd)); |
252b5132 RH |
613 | bfd_set_error (bfd_error_bad_value); |
614 | goto error_return; | |
615 | } | |
616 | ||
617 | if (len * 2 > bufsize) | |
618 | { | |
dc810e39 | 619 | buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) len * 2); |
252b5132 RH |
620 | if (buf == NULL) |
621 | goto error_return; | |
622 | bufsize = len * 2; | |
623 | } | |
624 | ||
dc810e39 | 625 | if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2) |
252b5132 RH |
626 | goto error_return; |
627 | ||
628 | for (i = 0; i < len; i++) | |
629 | *p++ = HEX2 (buf + 2 * i); | |
630 | if ((bfd_size_type) (p - contents) >= section->_raw_size) | |
631 | { | |
632 | /* We've read everything in the section. */ | |
633 | if (buf != NULL) | |
634 | free (buf); | |
635 | return true; | |
636 | } | |
637 | ||
638 | /* Skip the checksum. */ | |
dc810e39 | 639 | if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2) |
252b5132 RH |
640 | goto error_return; |
641 | } | |
642 | ||
643 | if ((bfd_size_type) (p - contents) < section->_raw_size) | |
644 | { | |
645 | (*_bfd_error_handler) | |
646 | (_("%s: bad section length in ihex_read_section"), | |
8f615d07 | 647 | bfd_archive_filename (abfd)); |
252b5132 RH |
648 | bfd_set_error (bfd_error_bad_value); |
649 | goto error_return; | |
650 | } | |
651 | ||
652 | if (buf != NULL) | |
653 | free (buf); | |
654 | ||
655 | return true; | |
656 | ||
657 | error_return: | |
658 | if (buf != NULL) | |
659 | free (buf); | |
660 | return false; | |
661 | } | |
662 | ||
663 | /* Get the contents of a section in an Intel Hex file. */ | |
664 | ||
665 | static boolean | |
666 | ihex_get_section_contents (abfd, section, location, offset, count) | |
667 | bfd *abfd; | |
668 | asection *section; | |
669 | PTR location; | |
670 | file_ptr offset; | |
671 | bfd_size_type count; | |
672 | { | |
673 | if (section->used_by_bfd == NULL) | |
674 | { | |
675 | section->used_by_bfd = bfd_alloc (abfd, section->_raw_size); | |
676 | if (section->used_by_bfd == NULL) | |
677 | return false; | |
678 | if (! ihex_read_section (abfd, section, section->used_by_bfd)) | |
679 | return false; | |
680 | } | |
681 | ||
682 | memcpy (location, (bfd_byte *) section->used_by_bfd + offset, | |
683 | (size_t) count); | |
684 | ||
685 | return true; | |
686 | } | |
687 | ||
688 | /* Set the contents of a section in an Intel Hex file. */ | |
689 | ||
690 | static boolean | |
691 | ihex_set_section_contents (abfd, section, location, offset, count) | |
692 | bfd *abfd; | |
693 | asection *section; | |
694 | PTR location; | |
695 | file_ptr offset; | |
696 | bfd_size_type count; | |
697 | { | |
698 | struct ihex_data_list *n; | |
699 | bfd_byte *data; | |
700 | struct ihex_data_struct *tdata; | |
dc810e39 | 701 | bfd_size_type amt; |
252b5132 RH |
702 | |
703 | if (count == 0 | |
704 | || (section->flags & SEC_ALLOC) == 0 | |
705 | || (section->flags & SEC_LOAD) == 0) | |
706 | return true; | |
707 | ||
dc810e39 AM |
708 | amt = sizeof (struct ihex_data_list); |
709 | n = (struct ihex_data_list *) bfd_alloc (abfd, amt); | |
252b5132 RH |
710 | if (n == NULL) |
711 | return false; | |
712 | ||
713 | data = (bfd_byte *) bfd_alloc (abfd, count); | |
714 | if (data == NULL) | |
715 | return false; | |
716 | memcpy (data, location, (size_t) count); | |
717 | ||
718 | n->data = data; | |
719 | n->where = section->lma + offset; | |
720 | n->size = count; | |
721 | ||
722 | /* Sort the records by address. Optimize for the common case of | |
723 | adding a record to the end of the list. */ | |
724 | tdata = abfd->tdata.ihex_data; | |
725 | if (tdata->tail != NULL | |
726 | && n->where >= tdata->tail->where) | |
727 | { | |
728 | tdata->tail->next = n; | |
729 | n->next = NULL; | |
730 | tdata->tail = n; | |
731 | } | |
732 | else | |
733 | { | |
734 | register struct ihex_data_list **pp; | |
735 | ||
736 | for (pp = &tdata->head; | |
737 | *pp != NULL && (*pp)->where < n->where; | |
738 | pp = &(*pp)->next) | |
739 | ; | |
740 | n->next = *pp; | |
741 | *pp = n; | |
742 | if (n->next == NULL) | |
743 | tdata->tail = n; | |
744 | } | |
745 | ||
746 | return true; | |
747 | } | |
748 | ||
749 | /* Write a record out to an Intel Hex file. */ | |
750 | ||
751 | static boolean | |
752 | ihex_write_record (abfd, count, addr, type, data) | |
753 | bfd *abfd; | |
dc810e39 AM |
754 | size_t count; |
755 | unsigned int addr; | |
252b5132 RH |
756 | unsigned int type; |
757 | bfd_byte *data; | |
758 | { | |
759 | static const char digs[] = "0123456789ABCDEF"; | |
760 | char buf[9 + CHUNK * 2 + 4]; | |
761 | char *p; | |
762 | unsigned int chksum; | |
763 | unsigned int i; | |
dc810e39 | 764 | size_t total; |
252b5132 RH |
765 | |
766 | #define TOHEX(buf, v) \ | |
767 | ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) | |
768 | ||
769 | buf[0] = ':'; | |
770 | TOHEX (buf + 1, count); | |
771 | TOHEX (buf + 3, (addr >> 8) & 0xff); | |
772 | TOHEX (buf + 5, addr & 0xff); | |
773 | TOHEX (buf + 7, type); | |
774 | ||
775 | chksum = count + addr + (addr >> 8) + type; | |
776 | ||
777 | for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) | |
778 | { | |
779 | TOHEX (p, *data); | |
780 | chksum += *data; | |
781 | } | |
782 | ||
783 | TOHEX (p, (- chksum) & 0xff); | |
784 | p[2] = '\r'; | |
785 | p[3] = '\n'; | |
786 | ||
dc810e39 AM |
787 | total = 9 + count * 2 + 4; |
788 | if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total) | |
252b5132 RH |
789 | return false; |
790 | ||
791 | return true; | |
792 | } | |
793 | ||
794 | /* Write out an Intel Hex file. */ | |
795 | ||
796 | static boolean | |
797 | ihex_write_object_contents (abfd) | |
798 | bfd *abfd; | |
799 | { | |
800 | bfd_vma segbase; | |
801 | bfd_vma extbase; | |
802 | struct ihex_data_list *l; | |
803 | ||
804 | segbase = 0; | |
805 | extbase = 0; | |
806 | for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) | |
807 | { | |
808 | bfd_vma where; | |
809 | bfd_byte *p; | |
810 | bfd_size_type count; | |
811 | ||
812 | where = l->where; | |
813 | p = l->data; | |
814 | count = l->size; | |
815 | while (count > 0) | |
816 | { | |
dc810e39 AM |
817 | size_t now; |
818 | unsigned int rec_addr; | |
252b5132 RH |
819 | |
820 | now = count; | |
dc810e39 | 821 | if (count > CHUNK) |
252b5132 RH |
822 | now = CHUNK; |
823 | ||
824 | if (where > segbase + extbase + 0xffff) | |
825 | { | |
826 | bfd_byte addr[2]; | |
827 | ||
828 | /* We need a new base address. */ | |
829 | if (where <= 0xfffff) | |
830 | { | |
831 | /* The addresses should be sorted. */ | |
832 | BFD_ASSERT (extbase == 0); | |
833 | ||
834 | segbase = where & 0xf0000; | |
835 | addr[0] = (bfd_byte)(segbase >> 12) & 0xff; | |
836 | addr[1] = (bfd_byte)(segbase >> 4) & 0xff; | |
837 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) | |
838 | return false; | |
839 | } | |
840 | else | |
841 | { | |
842 | /* The extended address record and the extended | |
843 | linear address record are combined, at least by | |
844 | some readers. We need an extended linear address | |
845 | record here, so if we've already written out an | |
846 | extended address record, zero it out to avoid | |
847 | confusion. */ | |
848 | if (segbase != 0) | |
849 | { | |
850 | addr[0] = 0; | |
851 | addr[1] = 0; | |
852 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) | |
853 | return false; | |
854 | segbase = 0; | |
855 | } | |
856 | ||
857 | extbase = where & 0xffff0000; | |
858 | if (where > extbase + 0xffff) | |
859 | { | |
860 | char buf[20]; | |
861 | ||
862 | sprintf_vma (buf, where); | |
863 | (*_bfd_error_handler) | |
864 | (_("%s: address 0x%s out of range for Intex Hex file"), | |
865 | bfd_get_filename (abfd), buf); | |
866 | bfd_set_error (bfd_error_bad_value); | |
867 | return false; | |
868 | } | |
869 | addr[0] = (bfd_byte)(extbase >> 24) & 0xff; | |
870 | addr[1] = (bfd_byte)(extbase >> 16) & 0xff; | |
871 | if (! ihex_write_record (abfd, 2, 0, 4, addr)) | |
872 | return false; | |
873 | } | |
874 | } | |
875 | ||
dc810e39 AM |
876 | rec_addr = where - (extbase + segbase); |
877 | if (! ihex_write_record (abfd, now, rec_addr, 0, p)) | |
252b5132 RH |
878 | return false; |
879 | ||
880 | where += now; | |
881 | p += now; | |
882 | count -= now; | |
883 | } | |
884 | } | |
885 | ||
886 | if (abfd->start_address != 0) | |
887 | { | |
888 | bfd_vma start; | |
889 | bfd_byte startbuf[4]; | |
890 | ||
891 | start = abfd->start_address; | |
892 | ||
893 | if (start <= 0xfffff) | |
894 | { | |
895 | startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff; | |
896 | startbuf[1] = 0; | |
897 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; | |
898 | startbuf[3] = (bfd_byte)start & 0xff; | |
899 | if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) | |
900 | return false; | |
901 | } | |
902 | else | |
903 | { | |
904 | startbuf[0] = (bfd_byte)(start >> 24) & 0xff; | |
905 | startbuf[1] = (bfd_byte)(start >> 16) & 0xff; | |
906 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; | |
907 | startbuf[3] = (bfd_byte)start & 0xff; | |
908 | if (! ihex_write_record (abfd, 4, 0, 5, startbuf)) | |
909 | return false; | |
910 | } | |
911 | } | |
912 | ||
913 | if (! ihex_write_record (abfd, 0, 0, 1, NULL)) | |
914 | return false; | |
915 | ||
916 | return true; | |
917 | } | |
918 | ||
919 | /* Make an empty symbol. This is required only because | |
920 | bfd_make_section_anyway wants to create a symbol for the section. */ | |
921 | ||
922 | static asymbol * | |
923 | ihex_make_empty_symbol (abfd) | |
924 | bfd *abfd; | |
925 | { | |
926 | asymbol *new; | |
927 | ||
dc810e39 | 928 | new = (asymbol *) bfd_zalloc (abfd, (bfd_size_type) sizeof (asymbol)); |
252b5132 RH |
929 | if (new != NULL) |
930 | new->the_bfd = abfd; | |
931 | return new; | |
932 | } | |
933 | ||
934 | /* Set the architecture for the output file. The architecture is | |
935 | irrelevant, so we ignore errors about unknown architectures. */ | |
936 | ||
937 | static boolean | |
938 | ihex_set_arch_mach (abfd, arch, mach) | |
939 | bfd *abfd; | |
940 | enum bfd_architecture arch; | |
941 | unsigned long mach; | |
942 | { | |
943 | if (! bfd_default_set_arch_mach (abfd, arch, mach)) | |
944 | { | |
945 | if (arch != bfd_arch_unknown) | |
946 | return false; | |
947 | } | |
948 | return true; | |
949 | } | |
950 | ||
951 | /* Get the size of the headers, for the linker. */ | |
952 | ||
953 | /*ARGSUSED*/ | |
954 | static int | |
955 | ihex_sizeof_headers (abfd, exec) | |
7442e600 ILT |
956 | bfd *abfd ATTRIBUTE_UNUSED; |
957 | boolean exec ATTRIBUTE_UNUSED; | |
252b5132 RH |
958 | { |
959 | return 0; | |
960 | } | |
961 | ||
962 | /* Some random definitions for the target vector. */ | |
963 | ||
964 | #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup | |
965 | #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info | |
966 | #define ihex_new_section_hook _bfd_generic_new_section_hook | |
967 | #define ihex_get_section_contents_in_window \ | |
968 | _bfd_generic_get_section_contents_in_window | |
969 | ||
970 | #define ihex_get_symtab_upper_bound bfd_0l | |
971 | #define ihex_get_symtab \ | |
972 | ((long (*) PARAMS ((bfd *, asymbol **))) bfd_0l) | |
973 | #define ihex_print_symbol _bfd_nosymbols_print_symbol | |
974 | #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info | |
975 | #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name | |
976 | #define ihex_get_lineno _bfd_nosymbols_get_lineno | |
977 | #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line | |
978 | #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol | |
979 | #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols | |
980 | #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol | |
981 | ||
982 | #define ihex_get_reloc_upper_bound \ | |
983 | ((long (*) PARAMS ((bfd *, asection *))) bfd_0l) | |
984 | #define ihex_canonicalize_reloc \ | |
985 | ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l) | |
986 | #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup | |
987 | ||
988 | #define ihex_bfd_get_relocated_section_contents \ | |
989 | bfd_generic_get_relocated_section_contents | |
990 | #define ihex_bfd_relax_section bfd_generic_relax_section | |
991 | #define ihex_bfd_gc_sections bfd_generic_gc_sections | |
8550eb6e | 992 | #define ihex_bfd_merge_sections bfd_generic_merge_sections |
252b5132 RH |
993 | #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
994 | #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
995 | #define ihex_bfd_final_link _bfd_generic_final_link | |
996 | #define ihex_bfd_link_split_section _bfd_generic_link_split_section | |
997 | ||
998 | /* The Intel Hex target vector. */ | |
999 | ||
1000 | const bfd_target ihex_vec = | |
1001 | { | |
1002 | "ihex", /* name */ | |
1003 | bfd_target_ihex_flavour, | |
1004 | BFD_ENDIAN_UNKNOWN, /* target byte order */ | |
1005 | BFD_ENDIAN_UNKNOWN, /* target headers byte order */ | |
1006 | 0, /* object flags */ | |
1007 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */ | |
1008 | 0, /* leading underscore */ | |
1009 | ' ', /* ar_pad_char */ | |
1010 | 16, /* ar_max_namelen */ | |
1011 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
1012 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
1013 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ | |
1014 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
1015 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
1016 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ | |
1017 | ||
1018 | { | |
1019 | _bfd_dummy_target, | |
1020 | ihex_object_p, /* bfd_check_format */ | |
1021 | _bfd_dummy_target, | |
1022 | _bfd_dummy_target, | |
1023 | }, | |
1024 | { | |
1025 | bfd_false, | |
1026 | ihex_mkobject, | |
1027 | _bfd_generic_mkarchive, | |
1028 | bfd_false, | |
1029 | }, | |
1030 | { /* bfd_write_contents */ | |
1031 | bfd_false, | |
1032 | ihex_write_object_contents, | |
1033 | _bfd_write_archive_contents, | |
1034 | bfd_false, | |
1035 | }, | |
1036 | ||
1037 | BFD_JUMP_TABLE_GENERIC (ihex), | |
1038 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
1039 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
1040 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
1041 | BFD_JUMP_TABLE_SYMBOLS (ihex), | |
1042 | BFD_JUMP_TABLE_RELOCS (ihex), | |
1043 | BFD_JUMP_TABLE_WRITE (ihex), | |
1044 | BFD_JUMP_TABLE_LINK (ihex), | |
1045 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
1046 | ||
c3c89269 | 1047 | NULL, |
dc810e39 | 1048 | |
252b5132 RH |
1049 | (PTR) 0 |
1050 | }; |