1 /* BFD back-end for Intel Hex objects. 2 Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 3 Free Software Foundation, Inc. 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 #include "bfd.h" 122 #include "sysdep.h" 123 #include "libbfd.h" 124 #include "libiberty.h" 125 #include "safe-ctype.h" 126 127 /* The number of bytes we put on one line during output. */ 128 129 #define CHUNK 16 130 131 /* Macros for converting between hex and binary. */ 132 133 #define NIBBLE(x) (hex_value (x)) 134 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) 135 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) 136 #define ISHEX(x) (hex_p (x)) 137 138 /* When we write out an ihex value, the values can not be output as 139 they are seen. Instead, we hold them in memory in this structure. */ 140 141 struct ihex_data_list 142 { 143 struct ihex_data_list *next; 144 bfd_byte *data; 145 bfd_vma where; 146 bfd_size_type size; 147 }; 148 149 /* The ihex tdata information. */ 150 151 struct ihex_data_struct 152 { 153 struct ihex_data_list *head; 154 struct ihex_data_list *tail; 155 }; 156 157 /* Initialize by filling in the hex conversion array. */ 158 159 static void 160 ihex_init (void) 161 { 162 static bfd_boolean inited; 163 164 if (! inited) 165 { 166 inited = TRUE; 167 hex_init (); 168 } 169 } 170 171 /* Create an ihex object. */ 172 173 static bfd_boolean 174 ihex_mkobject (bfd *abfd) 175 { 176 struct ihex_data_struct *tdata; 177 178 tdata = bfd_alloc (abfd, sizeof (* tdata)); 179 if (tdata == NULL) 180 return FALSE; 181 182 abfd->tdata.ihex_data = tdata; 183 tdata->head = NULL; 184 tdata->tail = NULL; 185 return TRUE; 186 } 187 188 /* Read a byte from a BFD. Set *ERRORPTR if an error occurred. 189 Return EOF on error or end of file. */ 190 191 static INLINE int 192 ihex_get_byte (bfd *abfd, bfd_boolean *errorptr) 193 { 194 bfd_byte c; 195 196 if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1) 197 { 198 if (bfd_get_error () != bfd_error_file_truncated) 199 *errorptr = TRUE; 200 return EOF; 201 } 202 203 return (int) (c & 0xff); 204 } 205 206 /* Report a problem in an Intel Hex file. */ 207 208 static void 209 ihex_bad_byte (bfd *abfd, unsigned int lineno, int c, bfd_boolean error) 210 { 211 if (c == EOF) 212 { 213 if (! error) 214 bfd_set_error (bfd_error_file_truncated); 215 } 216 else 217 { 218 char buf[10]; 219 220 if (! ISPRINT (c)) 221 sprintf (buf, "\\%03o", (unsigned int) c); 222 else 223 { 224 buf[0] = c; 225 buf[1] = '\0'; 226 } 227 (*_bfd_error_handler) 228 (_("%B:%d: unexpected character `%s' in Intel Hex file"), 229 abfd, lineno, buf); 230 bfd_set_error (bfd_error_bad_value); 231 } 232 } 233 234 /* Read an Intel hex file and turn it into sections. We create a new 235 section for each contiguous set of bytes. */ 236 237 static bfd_boolean 238 ihex_scan (bfd *abfd) 239 { 240 bfd_vma segbase; 241 bfd_vma extbase; 242 asection *sec; 243 unsigned int lineno; 244 bfd_boolean error; 245 bfd_byte *buf = NULL; 246 size_t bufsize; 247 int c; 248 249 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 250 goto error_return; 251 252 abfd->start_address = 0; 253 254 segbase = 0; 255 extbase = 0; 256 sec = NULL; 257 lineno = 1; 258 error = FALSE; 259 bufsize = 0; 260 261 while ((c = ihex_get_byte (abfd, &error)) != EOF) 262 { 263 if (c == '\r') 264 continue; 265 else if (c == '\n') 266 { 267 ++lineno; 268 continue; 269 } 270 else if (c != ':') 271 { 272 ihex_bad_byte (abfd, lineno, c, error); 273 goto error_return; 274 } 275 else 276 { 277 file_ptr pos; 278 char hdr[8]; 279 unsigned int i; 280 unsigned int len; 281 bfd_vma addr; 282 unsigned int type; 283 unsigned int chars; 284 unsigned int chksum; 285 286 /* This is a data record. */ 287 pos = bfd_tell (abfd) - 1; 288 289 /* Read the header bytes. */ 290 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) 291 goto error_return; 292 293 for (i = 0; i < 8; i++) 294 { 295 if (! ISHEX (hdr[i])) 296 { 297 ihex_bad_byte (abfd, lineno, hdr[i], error); 298 goto error_return; 299 } 300 } 301 302 len = HEX2 (hdr); 303 addr = HEX4 (hdr + 2); 304 type = HEX2 (hdr + 6); 305 306 /* Read the data bytes. */ 307 chars = len * 2 + 2; 308 if (chars >= bufsize) 309 { 310 buf = bfd_realloc (buf, (bfd_size_type) chars); 311 if (buf == NULL) 312 goto error_return; 313 bufsize = chars; 314 } 315 316 if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars) 317 goto error_return; 318 319 for (i = 0; i < chars; i++) 320 { 321 if (! ISHEX (buf[i])) 322 { 323 ihex_bad_byte (abfd, lineno, hdr[i], error); 324 goto error_return; 325 } 326 } 327 328 /* Check the checksum. */ 329 chksum = len + addr + (addr >> 8) + type; 330 for (i = 0; i < len; i++) 331 chksum += HEX2 (buf + 2 * i); 332 if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) 333 { 334 (*_bfd_error_handler) 335 (_("%B:%u: bad checksum in Intel Hex file (expected %u, found %u)"), 336 abfd, lineno, 337 (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); 338 bfd_set_error (bfd_error_bad_value); 339 goto error_return; 340 } 341 342 switch (type) 343 { 344 case 0: 345 /* This is a data record. */ 346 if (sec != NULL 347 && sec->vma + sec->size == extbase + segbase + addr) 348 { 349 /* This data goes at the end of the section we are 350 currently building. */ 351 sec->size += len; 352 } 353 else if (len > 0) 354 { 355 char secbuf[20]; 356 char *secname; 357 bfd_size_type amt; 358 359 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); 360 amt = strlen (secbuf) + 1; 361 secname = bfd_alloc (abfd, amt); 362 if (secname == NULL) 363 goto error_return; 364 strcpy (secname, secbuf); 365 sec = bfd_make_section (abfd, secname); 366 if (sec == NULL) 367 goto error_return; 368 sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; 369 sec->vma = extbase + segbase + addr; 370 sec->lma = extbase + segbase + addr; 371 sec->size = len; 372 sec->filepos = pos; 373 } 374 break; 375 376 case 1: 377 /* An end record. */ 378 if (abfd->start_address == 0) 379 abfd->start_address = addr; 380 if (buf != NULL) 381 free (buf); 382 return TRUE; 383 384 case 2: 385 /* An extended address record. */ 386 if (len != 2) 387 { 388 (*_bfd_error_handler) 389 (_("%B:%u: bad extended address record length in Intel Hex file"), 390 abfd, lineno); 391 bfd_set_error (bfd_error_bad_value); 392 goto error_return; 393 } 394 395 segbase = HEX4 (buf) << 4; 396 397 sec = NULL; 398 399 break; 400 401 case 3: 402 /* An extended start address record. */ 403 if (len != 4) 404 { 405 (*_bfd_error_handler) 406 (_("%B:%u: bad extended start address length in Intel Hex file"), 407 abfd, lineno); 408 bfd_set_error (bfd_error_bad_value); 409 goto error_return; 410 } 411 412 abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); 413 414 sec = NULL; 415 416 break; 417 418 case 4: 419 /* An extended linear address record. */ 420 if (len != 2) 421 { 422 (*_bfd_error_handler) 423 (_("%B:%u: bad extended linear address record length in Intel Hex file"), 424 abfd, lineno); 425 bfd_set_error (bfd_error_bad_value); 426 goto error_return; 427 } 428 429 extbase = HEX4 (buf) << 16; 430 431 sec = NULL; 432 433 break; 434 435 case 5: 436 /* An extended linear start address record. */ 437 if (len != 2 && len != 4) 438 { 439 (*_bfd_error_handler) 440 (_("%B:%u: bad extended linear start address length in Intel Hex file"), 441 abfd, lineno); 442 bfd_set_error (bfd_error_bad_value); 443 goto error_return; 444 } 445 446 if (len == 2) 447 abfd->start_address += HEX4 (buf) << 16; 448 else 449 abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); 450 451 sec = NULL; 452 453 break; 454 455 default: 456 (*_bfd_error_handler) 457 (_("%B:%u: unrecognized ihex type %u in Intel Hex file"), 458 abfd, lineno, type); 459 bfd_set_error (bfd_error_bad_value); 460 goto error_return; 461 } 462 } 463 } 464 465 if (error) 466 goto error_return; 467 468 if (buf != NULL) 469 free (buf); 470 471 return TRUE; 472 473 error_return: 474 if (buf != NULL) 475 free (buf); 476 return FALSE; 477 } 478 479 /* Try to recognize an Intel Hex file. */ 480 481 static const bfd_target * 482 ihex_object_p (bfd *abfd) 483 { 484 void * tdata_save; 485 bfd_byte b[9]; 486 unsigned int i; 487 unsigned int type; 488 489 ihex_init (); 490 491 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 492 return NULL; 493 if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9) 494 { 495 if (bfd_get_error () == bfd_error_file_truncated) 496 bfd_set_error (bfd_error_wrong_format); 497 return NULL; 498 } 499 500 if (b[0] != ':') 501 { 502 bfd_set_error (bfd_error_wrong_format); 503 return NULL; 504 } 505 506 for (i = 1; i < 9; i++) 507 { 508 if (! ISHEX (b[i])) 509 { 510 bfd_set_error (bfd_error_wrong_format); 511 return NULL; 512 } 513 } 514 515 type = HEX2 (b + 7); 516 if (type > 5) 517 { 518 bfd_set_error (bfd_error_wrong_format); 519 return NULL; 520 } 521 522 /* OK, it looks like it really is an Intel Hex file. */ 523 tdata_save = abfd->tdata.any; 524 if (! ihex_mkobject (abfd) || ! ihex_scan (abfd)) 525 { 526 if (abfd->tdata.any != tdata_save && abfd->tdata.any != NULL) 527 bfd_release (abfd, abfd->tdata.any); 528 abfd->tdata.any = tdata_save; 529 return NULL; 530 } 531 532 return abfd->xvec; 533 } 534 535 /* Read the contents of a section in an Intel Hex file. */ 536 537 static bfd_boolean 538 ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents) 539 { 540 int c; 541 bfd_byte *p; 542 bfd_byte *buf = NULL; 543 size_t bufsize; 544 bfd_boolean error; 545 546 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) 547 goto error_return; 548 549 p = contents; 550 bufsize = 0; 551 error = FALSE; 552 while ((c = ihex_get_byte (abfd, &error)) != EOF) 553 { 554 char hdr[8]; 555 unsigned int len; 556 bfd_vma addr; 557 unsigned int type; 558 unsigned int i; 559 560 if (c == '\r' || c == '\n') 561 continue; 562 563 /* This is called after ihex_scan has succeeded, so we ought to 564 know the exact format. */ 565 BFD_ASSERT (c == ':'); 566 567 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) 568 goto error_return; 569 570 len = HEX2 (hdr); 571 addr = HEX4 (hdr + 2); 572 type = HEX2 (hdr + 6); 573 574 /* We should only see type 0 records here. */ 575 if (type != 0) 576 { 577 (*_bfd_error_handler) 578 (_("%B: internal error in ihex_read_section"), abfd); 579 bfd_set_error (bfd_error_bad_value); 580 goto error_return; 581 } 582 583 if (len * 2 > bufsize) 584 { 585 buf = bfd_realloc (buf, (bfd_size_type) len * 2); 586 if (buf == NULL) 587 goto error_return; 588 bufsize = len * 2; 589 } 590 591 if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2) 592 goto error_return; 593 594 for (i = 0; i < len; i++) 595 *p++ = HEX2 (buf + 2 * i); 596 if ((bfd_size_type) (p - contents) >= section->size) 597 { 598 /* We've read everything in the section. */ 599 if (buf != NULL) 600 free (buf); 601 return TRUE; 602 } 603 604 /* Skip the checksum. */ 605 if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2) 606 goto error_return; 607 } 608 609 if ((bfd_size_type) (p - contents) < section->size) 610 { 611 (*_bfd_error_handler) 612 (_("%B: bad section length in ihex_read_section"), abfd); 613 bfd_set_error (bfd_error_bad_value); 614 goto error_return; 615 } 616 617 if (buf != NULL) 618 free (buf); 619 620 return TRUE; 621 622 error_return: 623 if (buf != NULL) 624 free (buf); 625 return FALSE; 626 } 627 628 /* Get the contents of a section in an Intel Hex file. */ 629 630 static bfd_boolean 631 ihex_get_section_contents (bfd *abfd, 632 asection *section, 633 void * location, 634 file_ptr offset, 635 bfd_size_type count) 636 { 637 if (section->used_by_bfd == NULL) 638 { 639 section->used_by_bfd = bfd_alloc (abfd, section->size); 640 if (section->used_by_bfd == NULL) 641 return FALSE; 642 if (! ihex_read_section (abfd, section, section->used_by_bfd)) 643 return FALSE; 644 } 645 646 memcpy (location, (bfd_byte *) section->used_by_bfd + offset, 647 (size_t) count); 648 649 return TRUE; 650 } 651 652 /* Set the contents of a section in an Intel Hex file. */ 653 654 static bfd_boolean 655 ihex_set_section_contents (bfd *abfd, 656 asection *section, 657 const void * location, 658 file_ptr offset, 659 bfd_size_type count) 660 { 661 struct ihex_data_list *n; 662 bfd_byte *data; 663 struct ihex_data_struct *tdata; 664 665 if (count == 0 666 || (section->flags & SEC_ALLOC) == 0 667 || (section->flags & SEC_LOAD) == 0) 668 return TRUE; 669 670 n = bfd_alloc (abfd, sizeof (* n)); 671 if (n == NULL) 672 return FALSE; 673 674 data = bfd_alloc (abfd, count); 675 if (data == NULL) 676 return FALSE; 677 memcpy (data, location, (size_t) count); 678 679 n->data = data; 680 n->where = section->lma + offset; 681 n->size = count; 682 683 /* Sort the records by address. Optimize for the common case of 684 adding a record to the end of the list. */ 685 tdata = abfd->tdata.ihex_data; 686 if (tdata->tail != NULL 687 && n->where >= tdata->tail->where) 688 { 689 tdata->tail->next = n; 690 n->next = NULL; 691 tdata->tail = n; 692 } 693 else 694 { 695 struct ihex_data_list **pp; 696 697 for (pp = &tdata->head; 698 *pp != NULL && (*pp)->where < n->where; 699 pp = &(*pp)->next) 700 ; 701 n->next = *pp; 702 *pp = n; 703 if (n->next == NULL) 704 tdata->tail = n; 705 } 706 707 return TRUE; 708 } 709 710 /* Write a record out to an Intel Hex file. */ 711 712 static bfd_boolean 713 ihex_write_record (bfd *abfd, 714 size_t count, 715 unsigned int addr, 716 unsigned int type, 717 bfd_byte *data) 718 { 719 static const char digs[] = "0123456789ABCDEF"; 720 char buf[9 + CHUNK * 2 + 4]; 721 char *p; 722 unsigned int chksum; 723 unsigned int i; 724 size_t total; 725 726 #define TOHEX(buf, v) \ 727 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) 728 729 buf[0] = ':'; 730 TOHEX (buf + 1, count); 731 TOHEX (buf + 3, (addr >> 8) & 0xff); 732 TOHEX (buf + 5, addr & 0xff); 733 TOHEX (buf + 7, type); 734 735 chksum = count + addr + (addr >> 8) + type; 736 737 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) 738 { 739 TOHEX (p, *data); 740 chksum += *data; 741 } 742 743 TOHEX (p, (- chksum) & 0xff); 744 p[2] = '\r'; 745 p[3] = '\n'; 746 747 total = 9 + count * 2 + 4; 748 if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total) 749 return FALSE; 750 751 return TRUE; 752 } 753 754 /* Write out an Intel Hex file. */ 755 756 static bfd_boolean 757 ihex_write_object_contents (bfd *abfd) 758 { 759 bfd_vma segbase; 760 bfd_vma extbase; 761 struct ihex_data_list *l; 762 763 segbase = 0; 764 extbase = 0; 765 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) 766 { 767 bfd_vma where; 768 bfd_byte *p; 769 bfd_size_type count; 770 771 where = l->where; 772 p = l->data; 773 count = l->size; 774 775 while (count > 0) 776 { 777 size_t now; 778 unsigned int rec_addr; 779 780 now = count; 781 if (count > CHUNK) 782 now = CHUNK; 783 784 if (where > segbase + extbase + 0xffff) 785 { 786 bfd_byte addr[2]; 787 788 /* We need a new base address. */ 789 if (where <= 0xfffff) 790 { 791 /* The addresses should be sorted. */ 792 BFD_ASSERT (extbase == 0); 793 794 segbase = where & 0xf0000; 795 addr[0] = (bfd_byte)(segbase >> 12) & 0xff; 796 addr[1] = (bfd_byte)(segbase >> 4) & 0xff; 797 if (! ihex_write_record (abfd, 2, 0, 2, addr)) 798 return FALSE; 799 } 800 else 801 { 802 /* The extended address record and the extended 803 linear address record are combined, at least by 804 some readers. We need an extended linear address 805 record here, so if we've already written out an 806 extended address record, zero it out to avoid 807 confusion. */ 808 if (segbase != 0) 809 { 810 addr[0] = 0; 811 addr[1] = 0; 812 if (! ihex_write_record (abfd, 2, 0, 2, addr)) 813 return FALSE; 814 segbase = 0; 815 } 816 817 extbase = where & 0xffff0000; 818 if (where > extbase + 0xffff) 819 { 820 char buf[20]; 821 822 sprintf_vma (buf, where); 823 (*_bfd_error_handler) 824 (_("%s: address 0x%s out of range for Intel Hex file"), 825 bfd_get_filename (abfd), buf); 826 bfd_set_error (bfd_error_bad_value); 827 return FALSE; 828 } 829 addr[0] = (bfd_byte)(extbase >> 24) & 0xff; 830 addr[1] = (bfd_byte)(extbase >> 16) & 0xff; 831 if (! ihex_write_record (abfd, 2, 0, 4, addr)) 832 return FALSE; 833 } 834 } 835 836 rec_addr = where - (extbase + segbase); 837 838 /* Output records shouldn't cross 64K boundaries. */ 839 if (rec_addr + now > 0xffff) 840 now = 0x10000 - rec_addr; 841 842 if (! ihex_write_record (abfd, now, rec_addr, 0, p)) 843 return FALSE; 844 845 where += now; 846 p += now; 847 count -= now; 848 } 849 } 850 851 if (abfd->start_address != 0) 852 { 853 bfd_vma start; 854 bfd_byte startbuf[4]; 855 856 start = abfd->start_address; 857 858 if (start <= 0xfffff) 859 { 860 startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff; 861 startbuf[1] = 0; 862 startbuf[2] = (bfd_byte)(start >> 8) & 0xff; 863 startbuf[3] = (bfd_byte)start & 0xff; 864 if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) 865 return FALSE; 866 } 867 else 868 { 869 startbuf[0] = (bfd_byte)(start >> 24) & 0xff; 870 startbuf[1] = (bfd_byte)(start >> 16) & 0xff; 871 startbuf[2] = (bfd_byte)(start >> 8) & 0xff; 872 startbuf[3] = (bfd_byte)start & 0xff; 873 if (! ihex_write_record (abfd, 4, 0, 5, startbuf)) 874 return FALSE; 875 } 876 } 877 878 if (! ihex_write_record (abfd, 0, 0, 1, NULL)) 879 return FALSE; 880 881 return TRUE; 882 } 883 884 /* Set the architecture for the output file. The architecture is 885 irrelevant, so we ignore errors about unknown architectures. */ 886 887 static bfd_boolean 888 ihex_set_arch_mach (bfd *abfd, 889 enum bfd_architecture arch, 890 unsigned long mach) 891 { 892 if (! bfd_default_set_arch_mach (abfd, arch, mach)) 893 { 894 if (arch != bfd_arch_unknown) 895 return FALSE; 896 } 897 return TRUE; 898 } 899 900 /* Get the size of the headers, for the linker. */ 901 902 static int 903 ihex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean exec ATTRIBUTE_UNUSED) 904 { 905 return 0; 906 } 907 908 /* Some random definitions for the target vector. */ 909 910 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup 911 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info 912 #define ihex_new_section_hook _bfd_generic_new_section_hook 913 #define ihex_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 914 #define ihex_get_symtab_upper_bound bfd_0l 915 #define ihex_canonicalize_symtab ((long (*) (bfd *, asymbol **)) bfd_0l) 916 #define ihex_make_empty_symbol _bfd_generic_make_empty_symbol 917 #define ihex_print_symbol _bfd_nosymbols_print_symbol 918 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info 919 #define ihex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) 920 #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name 921 #define ihex_get_lineno _bfd_nosymbols_get_lineno 922 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line 923 #define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info 924 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 925 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols 926 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol 927 #define ihex_get_reloc_upper_bound ((long (*) (bfd *, asection *)) bfd_0l) 928 #define ihex_canonicalize_reloc ((long (*) (bfd *, asection *, arelent **, asymbol **)) bfd_0l) 929 #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup 930 #define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 931 #define ihex_bfd_relax_section bfd_generic_relax_section 932 #define ihex_bfd_gc_sections bfd_generic_gc_sections 933 #define ihex_bfd_merge_sections bfd_generic_merge_sections 934 #define ihex_bfd_is_group_section bfd_generic_is_group_section 935 #define ihex_bfd_discard_group bfd_generic_discard_group 936 #define ihex_section_already_linked _bfd_generic_section_already_linked 937 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 938 #define ihex_bfd_link_hash_table_free _bfd_generic_link_hash_table_free 939 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols 940 #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms 941 #define ihex_bfd_final_link _bfd_generic_final_link 942 #define ihex_bfd_link_split_section _bfd_generic_link_split_section 943 944 /* The Intel Hex target vector. */ 945 946 const bfd_target ihex_vec = 947 { 948 "ihex", /* Name. */ 949 bfd_target_ihex_flavour, 950 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 951 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 952 0, /* Object flags. */ 953 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */ 954 0, /* Leading underscore. */ 955 ' ', /* AR_pad_char. */ 956 16, /* AR_max_namelen. */ 957 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 958 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 959 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 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, /* Headers. */ 963 964 { 965 _bfd_dummy_target, 966 ihex_object_p, /* bfd_check_format. */ 967 _bfd_dummy_target, 968 _bfd_dummy_target, 969 }, 970 { 971 bfd_false, 972 ihex_mkobject, 973 _bfd_generic_mkarchive, 974 bfd_false, 975 }, 976 { /* bfd_write_contents. */ 977 bfd_false, 978 ihex_write_object_contents, 979 _bfd_write_archive_contents, 980 bfd_false, 981 }, 982 983 BFD_JUMP_TABLE_GENERIC (ihex), 984 BFD_JUMP_TABLE_COPY (_bfd_generic), 985 BFD_JUMP_TABLE_CORE (_bfd_nocore), 986 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 987 BFD_JUMP_TABLE_SYMBOLS (ihex), 988 BFD_JUMP_TABLE_RELOCS (ihex), 989 BFD_JUMP_TABLE_WRITE (ihex), 990 BFD_JUMP_TABLE_LINK (ihex), 991 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 992 993 NULL, 994 995 NULL 996 }; 997