Commit | Line | Data |
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ffd15489 ILT |
1 | /* BFD back-end for Intel Hex objects. |
2 | Copyright 1995 Free Software Foundation, Inc. | |
3 | Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>. | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | /* This is what Intel Hex files look like: | |
22 | ||
23 | 1. INTEL FORMATS | |
24 | ||
25 | A. Intel 1 | |
26 | ||
27 | 16-bit address-field format, for files 64k bytes in length or less. | |
28 | ||
29 | DATA RECORD | |
30 | Byte 1 Header = colon(:) | |
31 | 2..3 The number of data bytes in hex notation | |
32 | 4..5 High byte of the record load address | |
33 | 6..7 Low byte of the record load address | |
34 | 8..9 Record type, must be "00" | |
35 | 10..x Data bytes in hex notation: | |
36 | x = (number of bytes - 1) * 2 + 11 | |
37 | x+1..x+2 Checksum in hex notation | |
38 | x+3..x+4 Carriage return, line feed | |
39 | ||
40 | END RECORD | |
41 | Byte 1 Header = colon (:) | |
42 | 2..3 The byte count, must be "00" | |
43 | 4..7 Transfer-address (usually "0000") | |
44 | the jump-to address, execution start address | |
45 | 8..9 Record type, must be "01" | |
46 | 10..11 Checksum, in hex notation | |
47 | 12..13 Carriage return, line feed | |
48 | ||
49 | B. INTEL 2 | |
50 | ||
51 | MCS-86 format, using a 20-bit address for files larger than 64K bytes. | |
52 | ||
53 | DATA RECORD | |
54 | Byte 1 Header = colon (:) | |
55 | 2..3 The byte count of this record, hex notation | |
56 | 4..5 High byte of the record load address | |
57 | 6..7 Low byte of the record load address | |
58 | 8..9 Record type, must be "00" | |
59 | 10..x The data bytes in hex notation: | |
60 | x = (number of data bytes - 1) * 2 + 11 | |
61 | x+1..x+2 Checksum in hex notation | |
62 | x+3..x+4 Carriage return, line feed | |
63 | ||
64 | EXTENDED ADDRESS RECORD | |
65 | Byte 1 Header = colon(:) | |
66 | 2..3 The byte count, must be "02" | |
67 | 4..7 Load address, must be "0000" | |
68 | 8..9 Record type, must be "02" | |
69 | 10..11 High byte of the offset address | |
70 | 12..13 Low byte of the offset address | |
71 | 14..15 Checksum in hex notation | |
72 | 16..17 Carriage return, line feed | |
73 | ||
74 | The checksums are the two's complement of the 8-bit sum | |
75 | without carry of the byte count, offset address, and the | |
76 | record type. | |
77 | ||
78 | START ADDRESS RECORD | |
79 | Byte 1 Header = colon (:) | |
80 | 2..3 The byte count, must be "04" | |
81 | 4..7 Load address, must be "0000" | |
82 | 8..9 Record type, must be "03" | |
83 | 10..13 8086 CS value | |
84 | 14..17 8086 IP value | |
85 | 18..19 Checksum in hex notation | |
86 | 20..21 Carriage return, line feed | |
87 | ||
55cac920 ILT |
88 | Another document reports these additional types: |
89 | ||
90 | EXTENDED LINEAR ADDRESS RECORD | |
91 | Byte 1 Header = colon (:) | |
92 | 2..3 The byte count, must be "02" | |
93 | 4..7 Load address, must be "0000" | |
94 | 8..9 Record type, must be "04" | |
95 | 10..13 Upper 16 bits of address of subsequent records | |
96 | 14..15 Checksum in hex notation | |
97 | 16..17 Carriage return, line feed | |
98 | ||
99 | START LINEAR ADDRESS RECORD | |
100 | Byte 1 Header = colon (:) | |
101 | 2..3 The byte count, must be "02" | |
102 | 4..7 Load address, must be "0000" | |
103 | 8..9 Record type, must be "05" | |
104 | 10..13 Upper 16 bits of start address | |
105 | 14..15 Checksum in hex notation | |
106 | 16..17 Carriage return, line feed | |
ffd15489 ILT |
107 | */ |
108 | ||
109 | #include "bfd.h" | |
110 | #include "sysdep.h" | |
111 | #include "libbfd.h" | |
112 | #include "libiberty.h" | |
113 | ||
114 | #include <ctype.h> | |
115 | ||
116 | static void ihex_init PARAMS ((void)); | |
117 | static boolean ihex_mkobject PARAMS ((bfd *)); | |
118 | static INLINE int ihex_get_byte PARAMS ((bfd *, boolean *)); | |
119 | static void ihex_bad_byte PARAMS ((bfd *, unsigned int, int, boolean)); | |
120 | static boolean ihex_scan PARAMS ((bfd *)); | |
121 | static const bfd_target *ihex_object_p PARAMS ((bfd *)); | |
122 | static boolean ihex_read_section PARAMS ((bfd *, asection *, bfd_byte *)); | |
123 | static boolean ihex_get_section_contents | |
124 | PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); | |
125 | static boolean ihex_set_section_contents | |
126 | PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); | |
127 | static boolean ihex_write_record | |
128 | PARAMS ((bfd *, bfd_size_type, bfd_vma, unsigned int, bfd_byte *)); | |
129 | static boolean ihex_write_object_contents PARAMS ((bfd *)); | |
130 | static asymbol *ihex_make_empty_symbol PARAMS ((bfd *)); | |
131 | static boolean ihex_set_arch_mach | |
132 | PARAMS ((bfd *, enum bfd_architecture, unsigned long)); | |
133 | ||
134 | /* The number of bytes we put on one line during output. */ | |
135 | ||
136 | #define CHUNK (21) | |
137 | ||
138 | /* Macros for converting between hex and binary. */ | |
139 | ||
140 | #define NIBBLE(x) (hex_value (x)) | |
141 | #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) | |
142 | #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) | |
143 | #define ISHEX(x) (hex_p (x)) | |
144 | ||
145 | /* When we write out an ihex value, the values can not be output as | |
146 | they are seen. Instead, we hold them in memory in this structure. */ | |
147 | ||
148 | struct ihex_data_list | |
149 | { | |
150 | struct ihex_data_list *next; | |
151 | bfd_byte *data; | |
152 | bfd_vma where; | |
153 | bfd_size_type size; | |
154 | }; | |
155 | ||
156 | /* The ihex tdata information. */ | |
157 | ||
158 | struct ihex_data_struct | |
159 | { | |
160 | struct ihex_data_list *head; | |
161 | struct ihex_data_list *tail; | |
162 | }; | |
163 | ||
164 | /* Initialize by filling in the hex conversion array. */ | |
165 | ||
166 | static void | |
167 | ihex_init () | |
168 | { | |
169 | static boolean inited; | |
170 | ||
171 | if (! inited) | |
172 | { | |
173 | inited = true; | |
174 | hex_init (); | |
175 | } | |
176 | } | |
177 | ||
178 | /* Create an ihex object. */ | |
179 | ||
180 | static boolean | |
181 | ihex_mkobject (abfd) | |
182 | bfd *abfd; | |
183 | { | |
184 | if (abfd->tdata.ihex_data == NULL) | |
185 | { | |
186 | struct ihex_data_struct *tdata; | |
187 | ||
188 | tdata = ((struct ihex_data_struct *) | |
189 | bfd_alloc (abfd, sizeof (struct ihex_data_struct))); | |
190 | if (tdata == NULL) | |
191 | return false; | |
192 | abfd->tdata.ihex_data = tdata; | |
193 | tdata->head = NULL; | |
194 | tdata->tail = NULL; | |
195 | } | |
196 | ||
197 | return true; | |
198 | } | |
199 | ||
200 | /* Read a byte from a BFD. Set *ERRORPTR if an error occurred. | |
201 | Return EOF on error or end of file. */ | |
202 | ||
203 | static INLINE int | |
204 | ihex_get_byte (abfd, errorptr) | |
205 | bfd *abfd; | |
206 | boolean *errorptr; | |
207 | { | |
208 | bfd_byte c; | |
209 | ||
210 | if (bfd_read (&c, 1, 1, abfd) != 1) | |
211 | { | |
212 | if (bfd_get_error () != bfd_error_file_truncated) | |
213 | *errorptr = true; | |
214 | return EOF; | |
215 | } | |
216 | ||
217 | return (int) (c & 0xff); | |
218 | } | |
219 | ||
220 | /* Report a problem in an Intel Hex file. */ | |
221 | ||
222 | static void | |
223 | ihex_bad_byte (abfd, lineno, c, error) | |
224 | bfd *abfd; | |
225 | unsigned int lineno; | |
226 | int c; | |
227 | boolean error; | |
228 | { | |
229 | if (c == EOF) | |
230 | { | |
231 | if (! error) | |
232 | bfd_set_error (bfd_error_file_truncated); | |
233 | } | |
234 | else | |
235 | { | |
236 | char buf[10]; | |
237 | ||
238 | if (! isprint (c)) | |
239 | sprintf (buf, "\\%03o", (unsigned int) c); | |
240 | else | |
241 | { | |
242 | buf[0] = c; | |
243 | buf[1] = '\0'; | |
244 | } | |
245 | (*_bfd_error_handler) | |
246 | ("%s:%d: unexpected character `%s' in Intel Hex file\n", | |
247 | bfd_get_filename (abfd), lineno, buf); | |
248 | bfd_set_error (bfd_error_bad_value); | |
249 | } | |
250 | } | |
251 | ||
252 | /* Read an Intel hex file and turn it into sections. We create a new | |
253 | section for each contiguous set of bytes. */ | |
254 | ||
255 | static boolean | |
256 | ihex_scan (abfd) | |
257 | bfd *abfd; | |
258 | { | |
55cac920 ILT |
259 | bfd_vma segbase; |
260 | bfd_vma extbase; | |
ffd15489 ILT |
261 | asection *sec; |
262 | int lineno; | |
263 | boolean error; | |
264 | bfd_byte *buf; | |
265 | size_t bufsize; | |
266 | int c; | |
267 | ||
268 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
269 | goto error_return; | |
270 | ||
55cac920 ILT |
271 | abfd->start_address = 0; |
272 | ||
273 | extbase = 0; | |
274 | segbase = 0; | |
ffd15489 ILT |
275 | sec = NULL; |
276 | lineno = 1; | |
277 | error = false; | |
278 | buf = NULL; | |
279 | bufsize = 0; | |
280 | while ((c = ihex_get_byte (abfd, &error)) != EOF) | |
281 | { | |
282 | if (c == '\r') | |
283 | continue; | |
284 | else if (c == '\n') | |
285 | { | |
286 | ++lineno; | |
287 | continue; | |
288 | } | |
289 | else if (c != ':') | |
290 | { | |
291 | ihex_bad_byte (abfd, lineno, c, error); | |
292 | goto error_return; | |
293 | } | |
294 | else | |
295 | { | |
296 | file_ptr pos; | |
297 | char hdr[8]; | |
298 | unsigned int i; | |
299 | unsigned int len; | |
300 | bfd_vma addr; | |
301 | unsigned int type; | |
302 | unsigned int chars; | |
303 | unsigned int chksum; | |
304 | ||
305 | /* This is a data record. */ | |
306 | ||
307 | pos = bfd_tell (abfd) - 1; | |
308 | ||
309 | /* Read the header bytes. */ | |
310 | ||
311 | if (bfd_read (hdr, 1, 8, abfd) != 8) | |
312 | goto error_return; | |
313 | ||
314 | for (i = 0; i < 8; i++) | |
315 | { | |
316 | if (! ISHEX (hdr[i])) | |
317 | { | |
318 | ihex_bad_byte (abfd, lineno, hdr[i], error); | |
319 | goto error_return; | |
320 | } | |
321 | } | |
322 | ||
323 | len = HEX2 (hdr); | |
324 | addr = HEX4 (hdr + 2); | |
325 | type = HEX2 (hdr + 6); | |
326 | ||
327 | /* Read the data bytes. */ | |
328 | ||
329 | chars = len * 2 + 2; | |
330 | if (chars >= bufsize) | |
331 | { | |
332 | buf = (bfd_byte *) bfd_realloc (buf, chars); | |
333 | if (buf == NULL) | |
334 | goto error_return; | |
335 | bufsize = chars; | |
336 | } | |
337 | ||
338 | if (bfd_read (buf, 1, chars, abfd) != chars) | |
339 | goto error_return; | |
340 | ||
341 | for (i = 0; i < chars; i++) | |
342 | { | |
343 | if (! ISHEX (buf[i])) | |
344 | { | |
345 | ihex_bad_byte (abfd, lineno, hdr[i], error); | |
346 | goto error_return; | |
347 | } | |
348 | } | |
349 | ||
350 | /* Check the checksum. */ | |
351 | chksum = len + addr + (addr >> 8) + type; | |
352 | for (i = 0; i < len; i++) | |
353 | chksum += HEX2 (buf + 2 * i); | |
354 | if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) | |
355 | { | |
356 | (*_bfd_error_handler) | |
357 | ("%s:%d: bad checksum in Intel Hex file (expected %u, found %u)", | |
358 | bfd_get_filename (abfd), lineno, | |
359 | (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); | |
360 | bfd_set_error (bfd_error_bad_value); | |
361 | goto error_return; | |
362 | } | |
363 | ||
364 | switch (type) | |
365 | { | |
366 | case 0: | |
367 | /* This is a data record. */ | |
368 | if (sec != NULL | |
55cac920 | 369 | && sec->vma + sec->_raw_size == extbase + segbase + addr) |
ffd15489 ILT |
370 | { |
371 | /* This data goes at the end of the section we are | |
372 | currently building. */ | |
373 | sec->_raw_size += len; | |
374 | } | |
375 | else if (len > 0) | |
376 | { | |
377 | char secbuf[20]; | |
378 | char *secname; | |
379 | ||
380 | sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); | |
381 | secname = (char *) bfd_alloc (abfd, strlen (secbuf) + 1); | |
382 | if (secname == NULL) | |
383 | goto error_return; | |
384 | strcpy (secname, secbuf); | |
385 | sec = bfd_make_section (abfd, secname); | |
386 | if (sec == NULL) | |
387 | goto error_return; | |
388 | sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; | |
55cac920 ILT |
389 | sec->vma = extbase + segbase + addr; |
390 | sec->lma = extbase + segbase + addr; | |
ffd15489 ILT |
391 | sec->_raw_size = len; |
392 | sec->filepos = pos; | |
393 | } | |
394 | break; | |
395 | ||
396 | case 1: | |
397 | /* An end record. */ | |
398 | if (abfd->start_address == 0) | |
399 | abfd->start_address = addr; | |
400 | if (buf != NULL) | |
401 | free (buf); | |
402 | return true; | |
403 | ||
404 | case 2: | |
405 | /* An extended address record. */ | |
406 | if (len != 2) | |
407 | { | |
408 | (*_bfd_error_handler) | |
409 | ("%s:%d: bad extended address record length in Intel Hex file", | |
410 | bfd_get_filename (abfd), lineno); | |
411 | bfd_set_error (bfd_error_bad_value); | |
412 | goto error_return; | |
413 | } | |
414 | ||
55cac920 | 415 | segbase = HEX4 (buf) << 4; |
ffd15489 ILT |
416 | |
417 | sec = NULL; | |
418 | ||
419 | break; | |
420 | ||
421 | case 3: | |
422 | /* An extended start address record. */ | |
423 | if (len != 4) | |
424 | { | |
425 | (*_bfd_error_handler) | |
426 | ("%s:%d: bad extended start address length in Intel Hex file", | |
427 | bfd_get_filename (abfd), lineno); | |
428 | bfd_set_error (bfd_error_bad_value); | |
429 | goto error_return; | |
430 | } | |
431 | ||
55cac920 ILT |
432 | abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); |
433 | ||
434 | sec = NULL; | |
435 | ||
436 | break; | |
437 | ||
438 | case 4: | |
439 | /* An extended linear address record. */ | |
440 | if (len != 2) | |
441 | { | |
442 | (*_bfd_error_handler) | |
443 | ("%s:%d: bad extended linear address record length in Intel Hex file", | |
444 | bfd_get_filename (abfd), lineno); | |
445 | bfd_set_error (bfd_error_bad_value); | |
446 | goto error_return; | |
447 | } | |
448 | ||
449 | segbase = HEX4 (buf) << 16; | |
450 | ||
451 | sec = NULL; | |
452 | ||
453 | break; | |
454 | ||
455 | case 5: | |
456 | /* An extended linear start address record. */ | |
457 | if (len != 2) | |
458 | { | |
459 | (*_bfd_error_handler) | |
460 | ("%s:%d: bad extended linear start address length in Intel Hex file", | |
461 | bfd_get_filename (abfd), lineno); | |
462 | bfd_set_error (bfd_error_bad_value); | |
463 | goto error_return; | |
464 | } | |
465 | ||
466 | abfd->start_address += HEX4 (buf) << 16; | |
ffd15489 ILT |
467 | |
468 | sec = NULL; | |
469 | ||
470 | break; | |
471 | ||
472 | default: | |
473 | (*_bfd_error_handler) | |
474 | ("%s:%d: unrecognized ihex type %u in Intel Hex file\n", | |
475 | bfd_get_filename (abfd), lineno, type); | |
476 | bfd_set_error (bfd_error_bad_value); | |
477 | goto error_return; | |
478 | } | |
479 | } | |
480 | } | |
481 | ||
482 | if (error) | |
483 | goto error_return; | |
484 | ||
485 | if (buf != NULL) | |
486 | free (buf); | |
487 | ||
488 | return true; | |
489 | ||
490 | error_return: | |
491 | if (buf != NULL) | |
492 | free (buf); | |
493 | return false; | |
494 | } | |
495 | ||
496 | /* Try to recognize an Intel Hex file. */ | |
497 | ||
498 | static const bfd_target * | |
499 | ihex_object_p (abfd) | |
500 | bfd *abfd; | |
501 | { | |
502 | bfd_byte b[9]; | |
503 | unsigned int i; | |
504 | unsigned int type; | |
505 | ||
506 | ihex_init (); | |
507 | ||
508 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
509 | return NULL; | |
510 | if (bfd_read (b, 1, 9, abfd) != 9) | |
511 | { | |
512 | if (bfd_get_error () == bfd_error_file_truncated) | |
513 | bfd_set_error (bfd_error_wrong_format); | |
514 | return NULL; | |
515 | } | |
516 | ||
517 | if (b[0] != ':') | |
518 | { | |
519 | bfd_set_error (bfd_error_wrong_format); | |
520 | return NULL; | |
521 | } | |
522 | ||
523 | for (i = 1; i < 9; i++) | |
524 | { | |
525 | if (! ISHEX (b[i])) | |
526 | { | |
527 | bfd_set_error (bfd_error_wrong_format); | |
528 | return NULL; | |
529 | } | |
530 | } | |
531 | ||
532 | type = HEX2 (b + 7); | |
55cac920 | 533 | if (type > 5) |
ffd15489 ILT |
534 | { |
535 | bfd_set_error (bfd_error_wrong_format); | |
536 | return NULL; | |
537 | } | |
538 | ||
539 | /* OK, it looks like it really is an Intel Hex file. */ | |
540 | ||
541 | if (! ihex_mkobject (abfd) | |
542 | || ! ihex_scan (abfd)) | |
543 | return NULL; | |
544 | ||
545 | return abfd->xvec; | |
546 | } | |
547 | ||
548 | /* Read the contents of a section in an Intel Hex file. */ | |
549 | ||
550 | static boolean | |
551 | ihex_read_section (abfd, section, contents) | |
552 | bfd *abfd; | |
553 | asection *section; | |
554 | bfd_byte *contents; | |
555 | { | |
556 | int c; | |
557 | bfd_byte *p; | |
558 | bfd_byte *buf; | |
559 | size_t bufsize; | |
560 | boolean error; | |
561 | ||
562 | if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) | |
563 | goto error_return; | |
564 | ||
565 | p = contents; | |
566 | buf = NULL; | |
567 | bufsize = 0; | |
568 | error = false; | |
569 | while ((c = ihex_get_byte (abfd, &error)) != EOF) | |
570 | { | |
571 | char hdr[8]; | |
572 | unsigned int len; | |
573 | bfd_vma addr; | |
574 | unsigned int type; | |
575 | unsigned int i; | |
576 | ||
577 | if (c == '\r' || c == '\n') | |
578 | continue; | |
579 | ||
580 | /* This is called after ihex_scan has succeeded, so we ought to | |
581 | know the exact format. */ | |
582 | BFD_ASSERT (c == ':'); | |
583 | ||
584 | if (bfd_read (hdr, 1, 8, abfd) != 8) | |
585 | goto error_return; | |
586 | ||
587 | len = HEX2 (hdr); | |
588 | addr = HEX4 (hdr + 2); | |
589 | type = HEX2 (hdr + 6); | |
590 | ||
591 | /* We should only see type 0 records here. */ | |
592 | if (type != 0) | |
593 | { | |
594 | (*_bfd_error_handler) | |
595 | ("%s: internal error in ihex_read_section", | |
596 | bfd_get_filename (abfd)); | |
597 | bfd_set_error (bfd_error_bad_value); | |
598 | goto error_return; | |
599 | } | |
600 | ||
601 | if (len * 2 > bufsize) | |
602 | { | |
603 | buf = (bfd_byte *) bfd_realloc (buf, len * 2); | |
604 | if (buf == NULL) | |
605 | goto error_return; | |
606 | bufsize = len * 2; | |
607 | } | |
608 | ||
609 | if (bfd_read (buf, 1, len * 2, abfd) != len * 2) | |
610 | goto error_return; | |
611 | ||
612 | for (i = 0; i < len; i++) | |
613 | *p++ = HEX2 (buf + 2 * i); | |
614 | if ((bfd_size_type) (p - contents) >= section->_raw_size) | |
615 | { | |
616 | /* We've read everything in the section. */ | |
617 | if (buf != NULL) | |
618 | free (buf); | |
619 | return true; | |
620 | } | |
621 | ||
622 | /* Skip the checksum. */ | |
623 | if (bfd_read (buf, 1, 2, abfd) != 2) | |
624 | goto error_return; | |
625 | } | |
626 | ||
627 | if ((bfd_size_type) (p - contents) < section->_raw_size) | |
628 | { | |
629 | (*_bfd_error_handler) | |
630 | ("%s: bad section length in ihex_read_section", | |
631 | bfd_get_filename (abfd)); | |
632 | bfd_set_error (bfd_error_bad_value); | |
633 | goto error_return; | |
634 | } | |
635 | ||
636 | if (buf != NULL) | |
637 | free (buf); | |
638 | ||
639 | return true; | |
640 | ||
641 | error_return: | |
642 | if (buf != NULL) | |
643 | free (buf); | |
644 | return false; | |
645 | } | |
646 | ||
647 | /* Get the contents of a section in an Intel Hex file. */ | |
648 | ||
649 | static boolean | |
650 | ihex_get_section_contents (abfd, section, location, offset, count) | |
651 | bfd *abfd; | |
652 | asection *section; | |
653 | PTR location; | |
654 | file_ptr offset; | |
655 | bfd_size_type count; | |
656 | { | |
657 | if (section->used_by_bfd == NULL) | |
658 | { | |
659 | section->used_by_bfd = bfd_alloc (abfd, section->_raw_size); | |
660 | if (section->used_by_bfd == NULL) | |
661 | return false; | |
662 | if (! ihex_read_section (abfd, section, section->used_by_bfd)) | |
663 | return false; | |
664 | } | |
665 | ||
666 | memcpy (location, (bfd_byte *) section->used_by_bfd + offset, | |
667 | (size_t) count); | |
668 | ||
669 | return true; | |
670 | } | |
671 | ||
672 | /* Set the contents of a section in an Intel Hex file. */ | |
673 | ||
674 | static boolean | |
675 | ihex_set_section_contents (abfd, section, location, offset, count) | |
676 | bfd *abfd; | |
677 | asection *section; | |
678 | PTR location; | |
679 | file_ptr offset; | |
680 | bfd_size_type count; | |
681 | { | |
682 | struct ihex_data_list *n; | |
683 | bfd_byte *data; | |
684 | struct ihex_data_struct *tdata; | |
685 | ||
686 | if (count == 0 | |
687 | || (section->flags & SEC_ALLOC) == 0 | |
688 | || (section->flags & SEC_LOAD) == 0) | |
689 | return true; | |
690 | ||
ffd15489 ILT |
691 | n = ((struct ihex_data_list *) |
692 | bfd_alloc (abfd, sizeof (struct ihex_data_list))); | |
693 | if (n == NULL) | |
694 | return false; | |
695 | ||
696 | data = (bfd_byte *) bfd_alloc (abfd, count); | |
697 | if (data == NULL) | |
698 | return false; | |
699 | memcpy (data, location, (size_t) count); | |
700 | ||
701 | n->data = data; | |
702 | n->where = section->lma + offset; | |
703 | n->size = count; | |
704 | ||
705 | /* Sort the records by address. Optimize for the common case of | |
706 | adding a record to the end of the list. */ | |
707 | tdata = abfd->tdata.ihex_data; | |
708 | if (tdata->tail != NULL | |
709 | && n->where >= tdata->tail->where) | |
710 | { | |
711 | tdata->tail->next = n; | |
712 | n->next = NULL; | |
713 | tdata->tail = n; | |
714 | } | |
715 | else | |
716 | { | |
717 | register struct ihex_data_list **pp; | |
718 | ||
719 | for (pp = &tdata->head; | |
720 | *pp != NULL && (*pp)->where < n->where; | |
721 | pp = &(*pp)->next) | |
722 | ; | |
723 | n->next = *pp; | |
724 | *pp = n; | |
725 | if (n->next == NULL) | |
726 | tdata->tail = n; | |
727 | } | |
728 | ||
729 | return true; | |
730 | } | |
731 | ||
732 | /* Write a record out to an Intel Hex file. */ | |
733 | ||
734 | static boolean | |
735 | ihex_write_record (abfd, count, addr, type, data) | |
736 | bfd *abfd; | |
737 | bfd_size_type count; | |
738 | bfd_vma addr; | |
739 | unsigned int type; | |
740 | bfd_byte *data; | |
741 | { | |
742 | static const char digs[] = "0123456789ABCDEF"; | |
743 | char buf[9 + CHUNK * 2 + 4]; | |
744 | char *p; | |
745 | unsigned int chksum; | |
746 | unsigned int i; | |
747 | ||
748 | #define TOHEX(buf, v) \ | |
749 | ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) | |
750 | ||
751 | buf[0] = ':'; | |
752 | TOHEX (buf + 1, count); | |
753 | TOHEX (buf + 3, (addr >> 8) & 0xff); | |
754 | TOHEX (buf + 5, addr & 0xff); | |
755 | TOHEX (buf + 7, type); | |
756 | ||
757 | chksum = count + addr + (addr >> 8) + type; | |
758 | ||
759 | for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) | |
760 | { | |
761 | TOHEX (p, *data); | |
762 | chksum += *data; | |
763 | } | |
764 | ||
765 | TOHEX (p, (- chksum) & 0xff); | |
766 | p[2] = '\r'; | |
767 | p[3] = '\n'; | |
768 | ||
769 | if (bfd_write (buf, 1, 9 + count * 2 + 4, abfd) != 9 + count * 2 + 4) | |
770 | return false; | |
771 | ||
772 | return true; | |
773 | } | |
774 | ||
775 | /* Write out an Intel Hex file. */ | |
776 | ||
777 | static boolean | |
778 | ihex_write_object_contents (abfd) | |
779 | bfd *abfd; | |
780 | { | |
55cac920 ILT |
781 | bfd_vma extbase; |
782 | bfd_vma segbase; | |
ffd15489 ILT |
783 | struct ihex_data_list *l; |
784 | ||
55cac920 ILT |
785 | extbase = 0; |
786 | segbase = 0; | |
ffd15489 ILT |
787 | for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) |
788 | { | |
789 | bfd_vma where; | |
790 | bfd_byte *p; | |
791 | bfd_size_type count; | |
792 | ||
793 | where = l->where; | |
794 | p = l->data; | |
795 | count = l->size; | |
796 | while (count > 0) | |
797 | { | |
798 | bfd_size_type now; | |
799 | ||
800 | now = count; | |
801 | if (now > CHUNK) | |
802 | now = CHUNK; | |
803 | ||
55cac920 | 804 | if (where > extbase + segbase + 0xffff) |
ffd15489 ILT |
805 | { |
806 | bfd_byte addr[2]; | |
807 | ||
55cac920 ILT |
808 | /* We need a new base address. */ |
809 | if (where <= 0xfffff) | |
810 | { | |
811 | segbase = where & 0xf0000; | |
812 | addr[0] = (segbase >> 12) & 0xff; | |
813 | addr[1] = (segbase >> 4) & 0xff; | |
814 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) | |
815 | return false; | |
816 | } | |
817 | else | |
818 | { | |
819 | extbase = where & 0xffff0000; | |
820 | if (where > extbase + 0xffff) | |
821 | { | |
822 | char buf[20]; | |
823 | ||
824 | sprintf_vma (buf, where); | |
825 | (*_bfd_error_handler) | |
826 | ("%s: address 0x%s out of range for Intex Hex file", | |
827 | bfd_get_filename (abfd), buf); | |
828 | bfd_set_error (bfd_error_bad_value); | |
829 | return false; | |
830 | } | |
831 | addr[0] = (extbase >> 24) & 0xff; | |
832 | addr[1] = (extbase >> 16) & 0xff; | |
833 | if (! ihex_write_record (abfd, 2, 0, 4, addr)) | |
834 | return false; | |
835 | } | |
ffd15489 ILT |
836 | } |
837 | ||
55cac920 ILT |
838 | if (! ihex_write_record (abfd, now, where - (extbase + segbase), |
839 | 0, p)) | |
ffd15489 ILT |
840 | return false; |
841 | ||
842 | where += now; | |
843 | p += now; | |
844 | count -= now; | |
845 | } | |
846 | } | |
847 | ||
848 | if (abfd->start_address != 0) | |
849 | { | |
55cac920 ILT |
850 | bfd_vma start; |
851 | bfd_byte startbuf[4]; | |
852 | ||
853 | start = abfd->start_address; | |
854 | ||
855 | if (start > 0xfffff) | |
856 | { | |
857 | startbuf[0] = (start >> 24) & 0xff; | |
858 | startbuf[1] = (start >> 16) & 0xff; | |
859 | if (! ihex_write_record (abfd, 2, 0, 5, startbuf)) | |
860 | return false; | |
861 | start &= 0xffff; | |
862 | } | |
ffd15489 | 863 | |
55cac920 ILT |
864 | startbuf[0] = ((start & 0xf0000) >> 12) & 0xff; |
865 | startbuf[1] = 0; | |
866 | startbuf[2] = (start >> 8) & 0xff; | |
867 | startbuf[3] = start & 0xff; | |
868 | if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) | |
ffd15489 ILT |
869 | return false; |
870 | } | |
871 | ||
872 | if (! ihex_write_record (abfd, 0, 0, 1, NULL)) | |
873 | return false; | |
874 | ||
875 | return true; | |
876 | } | |
877 | ||
878 | /* Make an empty symbol. This is required only because | |
879 | bfd_make_section_anyway wants to create a symbol for the section. */ | |
880 | ||
881 | static asymbol * | |
882 | ihex_make_empty_symbol (abfd) | |
883 | bfd *abfd; | |
884 | { | |
885 | asymbol *new; | |
886 | ||
887 | new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); | |
888 | if (new != NULL) | |
889 | new->the_bfd = abfd; | |
890 | return new; | |
891 | } | |
892 | ||
893 | /* Set the architecture for the output file. The architecture is | |
894 | irrelevant, so we ignore errors about unknown architectures. */ | |
895 | ||
896 | static boolean | |
897 | ihex_set_arch_mach (abfd, arch, mach) | |
898 | bfd *abfd; | |
899 | enum bfd_architecture arch; | |
900 | unsigned long mach; | |
901 | { | |
902 | bfd_default_set_arch_mach (abfd, arch, mach); | |
903 | return true; | |
904 | } | |
905 | ||
906 | /* Get the size of the headers, for the linker. */ | |
907 | ||
908 | /*ARGSUSED*/ | |
909 | static int | |
910 | ihex_sizeof_headers (abfd, exec) | |
911 | bfd *abfd; | |
912 | boolean exec; | |
913 | { | |
914 | return 0; | |
915 | } | |
916 | ||
917 | /* Some random definitions for the target vector. */ | |
918 | ||
919 | #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup | |
920 | #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info | |
921 | #define ihex_new_section_hook _bfd_generic_new_section_hook | |
922 | #define ihex_get_section_contents_in_window \ | |
923 | _bfd_generic_get_section_contents_in_window | |
924 | ||
925 | #define ihex_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound | |
926 | #define ihex_get_symtab _bfd_nosymbols_get_symtab | |
927 | #define ihex_print_symbol _bfd_nosymbols_print_symbol | |
928 | #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info | |
929 | #define ihex_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label | |
930 | #define ihex_get_lineno _bfd_nosymbols_get_lineno | |
931 | #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line | |
932 | #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol | |
933 | #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols | |
934 | #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol | |
935 | ||
936 | #define ihex_get_reloc_upper_bound \ | |
937 | ((long (*) PARAMS ((bfd *, asection *))) bfd_0l) | |
938 | #define ihex_canonicalize_reloc \ | |
939 | ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l) | |
940 | #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup | |
941 | ||
942 | #define ihex_bfd_get_relocated_section_contents \ | |
943 | bfd_generic_get_relocated_section_contents | |
944 | #define ihex_bfd_relax_section bfd_generic_relax_section | |
945 | #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
946 | #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
947 | #define ihex_bfd_final_link _bfd_generic_final_link | |
948 | #define ihex_bfd_link_split_section _bfd_generic_link_split_section | |
949 | ||
950 | /* The Intel Hex target vector. */ | |
951 | ||
952 | const bfd_target ihex_vec = | |
953 | { | |
954 | "ihex", /* name */ | |
955 | bfd_target_ihex_flavour, | |
956 | true, /* target byte order */ | |
957 | true, /* target headers byte order */ | |
958 | 0, /* object flags */ | |
959 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */ | |
960 | 0, /* leading underscore */ | |
961 | ' ', /* ar_pad_char */ | |
962 | 16, /* ar_max_namelen */ | |
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, /* data */ | |
966 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
967 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
968 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ | |
969 | ||
970 | { | |
971 | _bfd_dummy_target, | |
972 | ihex_object_p, /* bfd_check_format */ | |
973 | _bfd_dummy_target, | |
974 | _bfd_dummy_target, | |
975 | }, | |
976 | { | |
977 | bfd_false, | |
978 | ihex_mkobject, | |
979 | _bfd_generic_mkarchive, | |
980 | bfd_false, | |
981 | }, | |
982 | { /* bfd_write_contents */ | |
983 | bfd_false, | |
984 | ihex_write_object_contents, | |
985 | _bfd_write_archive_contents, | |
986 | bfd_false, | |
987 | }, | |
988 | ||
989 | BFD_JUMP_TABLE_GENERIC (ihex), | |
990 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
991 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
992 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
993 | BFD_JUMP_TABLE_SYMBOLS (ihex), | |
994 | BFD_JUMP_TABLE_RELOCS (ihex), | |
995 | BFD_JUMP_TABLE_WRITE (ihex), | |
996 | BFD_JUMP_TABLE_LINK (ihex), | |
997 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
998 | ||
999 | (PTR) 0 | |
1000 | }; |