1 /* BFD back-end for Intel Hex objects. 2 Copyright (C) 1995-2016 Free Software Foundation, Inc. 3 Written by Ian Lance Taylor of Cygnus Support <ian (at) 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 #define CHUNK 16 131 132 /* Macros for converting between hex and binary. */ 133 134 #define NIBBLE(x) (hex_value (x)) 135 #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) 136 #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) 137 #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 { 163 static bfd_boolean inited; 164 165 if (! inited) 166 { 167 inited = TRUE; 168 hex_init (); 169 } 170 } 171 172 /* Create an ihex object. */ 173 174 static bfd_boolean 175 ihex_mkobject (bfd *abfd) 176 { 177 struct ihex_data_struct *tdata; 178 179 tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata)); 180 if (tdata == NULL) 181 return FALSE; 182 183 abfd->tdata.ihex_data = tdata; 184 tdata->head = NULL; 185 tdata->tail = NULL; 186 return TRUE; 187 } 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, bfd_boolean *errorptr) 194 { 195 bfd_byte c; 196 197 if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1) 198 { 199 if (bfd_get_error () != bfd_error_file_truncated) 200 *errorptr = TRUE; 201 return EOF; 202 } 203 204 return (int) (c & 0xff); 205 } 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, bfd_boolean error) 211 { 212 if (c == EOF) 213 { 214 if (! error) 215 bfd_set_error (bfd_error_file_truncated); 216 } 217 else 218 { 219 char buf[10]; 220 221 if (! ISPRINT (c)) 222 sprintf (buf, "\\%03o", (unsigned int) c & 0xff); 223 else 224 { 225 buf[0] = c; 226 buf[1] = '\0'; 227 } 228 (*_bfd_error_handler) 229 (_("%B:%d: unexpected character `%s' in Intel Hex file"), 230 abfd, lineno, buf); 231 bfd_set_error (bfd_error_bad_value); 232 } 233 } 234 235 /* Read an Intel hex file and turn it into sections. We create a new 236 section for each contiguous set of bytes. */ 237 238 static bfd_boolean 239 ihex_scan (bfd *abfd) 240 { 241 bfd_vma segbase; 242 bfd_vma extbase; 243 asection *sec; 244 unsigned int lineno; 245 bfd_boolean error; 246 bfd_byte *buf = NULL; 247 size_t bufsize; 248 int c; 249 250 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 251 goto error_return; 252 253 abfd->start_address = 0; 254 255 segbase = 0; 256 extbase = 0; 257 sec = NULL; 258 lineno = 1; 259 error = FALSE; 260 bufsize = 0; 261 262 while ((c = ihex_get_byte (abfd, &error)) != EOF) 263 { 264 if (c == '\r') 265 continue; 266 else if (c == '\n') 267 { 268 ++lineno; 269 continue; 270 } 271 else if (c != ':') 272 { 273 ihex_bad_byte (abfd, lineno, c, error); 274 goto error_return; 275 } 276 else 277 { 278 file_ptr pos; 279 unsigned char hdr[8]; 280 unsigned int i; 281 unsigned int len; 282 bfd_vma addr; 283 unsigned int type; 284 unsigned int chars; 285 unsigned int chksum; 286 287 /* This is a data record. */ 288 pos = bfd_tell (abfd) - 1; 289 290 /* Read the header bytes. */ 291 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) 292 goto error_return; 293 294 for (i = 0; i < 8; i++) 295 { 296 if (! ISHEX (hdr[i])) 297 { 298 ihex_bad_byte (abfd, lineno, hdr[i], error); 299 goto error_return; 300 } 301 } 302 303 len = HEX2 (hdr); 304 addr = HEX4 (hdr + 2); 305 type = HEX2 (hdr + 6); 306 307 /* Read the data bytes. */ 308 chars = len * 2 + 2; 309 if (chars >= bufsize) 310 { 311 buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars); 312 if (buf == NULL) 313 goto error_return; 314 bufsize = chars; 315 } 316 317 if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars) 318 goto error_return; 319 320 for (i = 0; i < chars; i++) 321 { 322 if (! ISHEX (buf[i])) 323 { 324 ihex_bad_byte (abfd, lineno, buf[i], error); 325 goto error_return; 326 } 327 } 328 329 /* Check the checksum. */ 330 chksum = len + addr + (addr >> 8) + type; 331 for (i = 0; i < len; i++) 332 chksum += HEX2 (buf + 2 * i); 333 if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) 334 { 335 (*_bfd_error_handler) 336 (_("%B:%u: bad checksum in Intel Hex file (expected %u, found %u)"), 337 abfd, lineno, 338 (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); 339 bfd_set_error (bfd_error_bad_value); 340 goto error_return; 341 } 342 343 switch (type) 344 { 345 case 0: 346 /* This is a data record. */ 347 if (sec != NULL 348 && sec->vma + sec->size == extbase + segbase + addr) 349 { 350 /* This data goes at the end of the section we are 351 currently building. */ 352 sec->size += len; 353 } 354 else if (len > 0) 355 { 356 char secbuf[20]; 357 char *secname; 358 bfd_size_type amt; 359 flagword flags; 360 361 sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); 362 amt = strlen (secbuf) + 1; 363 secname = (char *) bfd_alloc (abfd, amt); 364 if (secname == NULL) 365 goto error_return; 366 strcpy (secname, secbuf); 367 flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; 368 sec = bfd_make_section_with_flags (abfd, secname, flags); 369 if (sec == NULL) 370 goto error_return; 371 sec->vma = extbase + segbase + addr; 372 sec->lma = extbase + segbase + addr; 373 sec->size = len; 374 sec->filepos = pos; 375 } 376 break; 377 378 case 1: 379 /* An end record. */ 380 if (abfd->start_address == 0) 381 abfd->start_address = addr; 382 if (buf != NULL) 383 free (buf); 384 return TRUE; 385 386 case 2: 387 /* An extended address record. */ 388 if (len != 2) 389 { 390 (*_bfd_error_handler) 391 (_("%B:%u: bad extended address record length in Intel Hex file"), 392 abfd, lineno); 393 bfd_set_error (bfd_error_bad_value); 394 goto error_return; 395 } 396 397 segbase = HEX4 (buf) << 4; 398 399 sec = NULL; 400 401 break; 402 403 case 3: 404 /* An extended start address record. */ 405 if (len != 4) 406 { 407 (*_bfd_error_handler) 408 (_("%B:%u: bad extended start address length in Intel Hex file"), 409 abfd, lineno); 410 bfd_set_error (bfd_error_bad_value); 411 goto error_return; 412 } 413 414 abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); 415 416 sec = NULL; 417 418 break; 419 420 case 4: 421 /* An extended linear address record. */ 422 if (len != 2) 423 { 424 (*_bfd_error_handler) 425 (_("%B:%u: bad extended linear address record length in Intel Hex file"), 426 abfd, lineno); 427 bfd_set_error (bfd_error_bad_value); 428 goto error_return; 429 } 430 431 extbase = HEX4 (buf) << 16; 432 433 sec = NULL; 434 435 break; 436 437 case 5: 438 /* An extended linear start address record. */ 439 if (len != 2 && len != 4) 440 { 441 (*_bfd_error_handler) 442 (_("%B:%u: bad extended linear start address length in Intel Hex file"), 443 abfd, lineno); 444 bfd_set_error (bfd_error_bad_value); 445 goto error_return; 446 } 447 448 if (len == 2) 449 abfd->start_address += HEX4 (buf) << 16; 450 else 451 abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); 452 453 sec = NULL; 454 455 break; 456 457 default: 458 (*_bfd_error_handler) 459 (_("%B:%u: unrecognized ihex type %u in Intel Hex file"), 460 abfd, lineno, type); 461 bfd_set_error (bfd_error_bad_value); 462 goto error_return; 463 } 464 } 465 } 466 467 if (error) 468 goto error_return; 469 470 if (buf != NULL) 471 free (buf); 472 473 return TRUE; 474 475 error_return: 476 if (buf != NULL) 477 free (buf); 478 return FALSE; 479 } 480 481 /* Try to recognize an Intel Hex file. */ 482 483 static const bfd_target * 484 ihex_object_p (bfd *abfd) 485 { 486 void * tdata_save; 487 bfd_byte b[9]; 488 unsigned int i; 489 unsigned int type; 490 491 ihex_init (); 492 493 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 494 return NULL; 495 if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9) 496 { 497 if (bfd_get_error () == bfd_error_file_truncated) 498 bfd_set_error (bfd_error_wrong_format); 499 return NULL; 500 } 501 502 if (b[0] != ':') 503 { 504 bfd_set_error (bfd_error_wrong_format); 505 return NULL; 506 } 507 508 for (i = 1; i < 9; i++) 509 { 510 if (! ISHEX (b[i])) 511 { 512 bfd_set_error (bfd_error_wrong_format); 513 return NULL; 514 } 515 } 516 517 type = HEX2 (b + 7); 518 if (type > 5) 519 { 520 bfd_set_error (bfd_error_wrong_format); 521 return NULL; 522 } 523 524 /* OK, it looks like it really is an Intel Hex file. */ 525 tdata_save = abfd->tdata.any; 526 if (! ihex_mkobject (abfd) || ! ihex_scan (abfd)) 527 { 528 if (abfd->tdata.any != tdata_save && abfd->tdata.any != NULL) 529 bfd_release (abfd, abfd->tdata.any); 530 abfd->tdata.any = tdata_save; 531 return NULL; 532 } 533 534 return abfd->xvec; 535 } 536 537 /* Read the contents of a section in an Intel Hex file. */ 538 539 static bfd_boolean 540 ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents) 541 { 542 int c; 543 bfd_byte *p; 544 bfd_byte *buf = NULL; 545 size_t bufsize; 546 bfd_boolean error; 547 548 if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) 549 goto error_return; 550 551 p = contents; 552 bufsize = 0; 553 error = FALSE; 554 while ((c = ihex_get_byte (abfd, &error)) != EOF) 555 { 556 unsigned char hdr[8]; 557 unsigned int len; 558 unsigned int type; 559 unsigned int i; 560 561 if (c == '\r' || c == '\n') 562 continue; 563 564 /* This is called after ihex_scan has succeeded, so we ought to 565 know the exact format. */ 566 BFD_ASSERT (c == ':'); 567 568 if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) 569 goto error_return; 570 571 len = HEX2 (hdr); 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_byte *) 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, 643 (bfd_byte *) section->used_by_bfd)) 644 return FALSE; 645 } 646 647 memcpy (location, (bfd_byte *) section->used_by_bfd + offset, 648 (size_t) count); 649 650 return TRUE; 651 } 652 653 /* Set the contents of a section in an Intel Hex file. */ 654 655 static bfd_boolean 656 ihex_set_section_contents (bfd *abfd, 657 asection *section, 658 const void * location, 659 file_ptr offset, 660 bfd_size_type count) 661 { 662 struct ihex_data_list *n; 663 bfd_byte *data; 664 struct ihex_data_struct *tdata; 665 666 if (count == 0 667 || (section->flags & SEC_ALLOC) == 0 668 || (section->flags & SEC_LOAD) == 0) 669 return TRUE; 670 671 n = (struct ihex_data_list *) bfd_alloc (abfd, sizeof (* n)); 672 if (n == NULL) 673 return FALSE; 674 675 data = (bfd_byte *) bfd_alloc (abfd, count); 676 if (data == NULL) 677 return FALSE; 678 memcpy (data, location, (size_t) count); 679 680 n->data = data; 681 n->where = section->lma + offset; 682 n->size = count; 683 684 /* Sort the records by address. Optimize for the common case of 685 adding a record to the end of the list. */ 686 tdata = abfd->tdata.ihex_data; 687 if (tdata->tail != NULL 688 && n->where >= tdata->tail->where) 689 { 690 tdata->tail->next = n; 691 n->next = NULL; 692 tdata->tail = n; 693 } 694 else 695 { 696 struct ihex_data_list **pp; 697 698 for (pp = &tdata->head; 699 *pp != NULL && (*pp)->where < n->where; 700 pp = &(*pp)->next) 701 ; 702 n->next = *pp; 703 *pp = n; 704 if (n->next == NULL) 705 tdata->tail = n; 706 } 707 708 return TRUE; 709 } 710 711 /* Write a record out to an Intel Hex file. */ 712 713 static bfd_boolean 714 ihex_write_record (bfd *abfd, 715 size_t count, 716 unsigned int addr, 717 unsigned int type, 718 bfd_byte *data) 719 { 720 static const char digs[] = "0123456789ABCDEF"; 721 char buf[9 + CHUNK * 2 + 4]; 722 char *p; 723 unsigned int chksum; 724 unsigned int i; 725 size_t total; 726 727 #define TOHEX(buf, v) \ 728 ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) 729 730 buf[0] = ':'; 731 TOHEX (buf + 1, count); 732 TOHEX (buf + 3, (addr >> 8) & 0xff); 733 TOHEX (buf + 5, addr & 0xff); 734 TOHEX (buf + 7, type); 735 736 chksum = count + addr + (addr >> 8) + type; 737 738 for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) 739 { 740 TOHEX (p, *data); 741 chksum += *data; 742 } 743 744 TOHEX (p, (- chksum) & 0xff); 745 p[2] = '\r'; 746 p[3] = '\n'; 747 748 total = 9 + count * 2 + 4; 749 if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total) 750 return FALSE; 751 752 return TRUE; 753 } 754 755 /* Write out an Intel Hex file. */ 756 757 static bfd_boolean 758 ihex_write_object_contents (bfd *abfd) 759 { 760 bfd_vma segbase; 761 bfd_vma extbase; 762 struct ihex_data_list *l; 763 764 segbase = 0; 765 extbase = 0; 766 for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) 767 { 768 bfd_vma where; 769 bfd_byte *p; 770 bfd_size_type count; 771 772 where = l->where; 773 p = l->data; 774 count = l->size; 775 776 while (count > 0) 777 { 778 size_t now; 779 unsigned int rec_addr; 780 781 now = count; 782 if (count > CHUNK) 783 now = CHUNK; 784 785 if (where > segbase + extbase + 0xffff) 786 { 787 bfd_byte addr[2]; 788 789 /* We need a new base address. */ 790 if (where <= 0xfffff) 791 { 792 /* The addresses should be sorted. */ 793 BFD_ASSERT (extbase == 0); 794 795 segbase = where & 0xf0000; 796 addr[0] = (bfd_byte)(segbase >> 12) & 0xff; 797 addr[1] = (bfd_byte)(segbase >> 4) & 0xff; 798 if (! ihex_write_record (abfd, 2, 0, 2, addr)) 799 return FALSE; 800 } 801 else 802 { 803 /* The extended address record and the extended 804 linear address record are combined, at least by 805 some readers. We need an extended linear address 806 record here, so if we've already written out an 807 extended address record, zero it out to avoid 808 confusion. */ 809 if (segbase != 0) 810 { 811 addr[0] = 0; 812 addr[1] = 0; 813 if (! ihex_write_record (abfd, 2, 0, 2, addr)) 814 return FALSE; 815 segbase = 0; 816 } 817 818 extbase = where & 0xffff0000; 819 if (where > extbase + 0xffff) 820 { 821 char buf[20]; 822 823 sprintf_vma (buf, where); 824 (*_bfd_error_handler) 825 (_("%s: address 0x%s out of range for Intel Hex file"), 826 bfd_get_filename (abfd), buf); 827 bfd_set_error (bfd_error_bad_value); 828 return FALSE; 829 } 830 addr[0] = (bfd_byte)(extbase >> 24) & 0xff; 831 addr[1] = (bfd_byte)(extbase >> 16) & 0xff; 832 if (! ihex_write_record (abfd, 2, 0, 4, addr)) 833 return FALSE; 834 } 835 } 836 837 rec_addr = where - (extbase + segbase); 838 839 /* Output records shouldn't cross 64K boundaries. */ 840 if (rec_addr + now > 0xffff) 841 now = 0x10000 - rec_addr; 842 843 if (! ihex_write_record (abfd, now, rec_addr, 0, p)) 844 return FALSE; 845 846 where += now; 847 p += now; 848 count -= now; 849 } 850 } 851 852 if (abfd->start_address != 0) 853 { 854 bfd_vma start; 855 bfd_byte startbuf[4]; 856 857 start = abfd->start_address; 858 859 if (start <= 0xfffff) 860 { 861 startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff; 862 startbuf[1] = 0; 863 startbuf[2] = (bfd_byte)(start >> 8) & 0xff; 864 startbuf[3] = (bfd_byte)start & 0xff; 865 if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) 866 return FALSE; 867 } 868 else 869 { 870 startbuf[0] = (bfd_byte)(start >> 24) & 0xff; 871 startbuf[1] = (bfd_byte)(start >> 16) & 0xff; 872 startbuf[2] = (bfd_byte)(start >> 8) & 0xff; 873 startbuf[3] = (bfd_byte)start & 0xff; 874 if (! ihex_write_record (abfd, 4, 0, 5, startbuf)) 875 return FALSE; 876 } 877 } 878 879 if (! ihex_write_record (abfd, 0, 0, 1, NULL)) 880 return FALSE; 881 882 return TRUE; 883 } 884 885 /* Set the architecture for the output file. The architecture is 886 irrelevant, so we ignore errors about unknown architectures. */ 887 888 static bfd_boolean 889 ihex_set_arch_mach (bfd *abfd, 890 enum bfd_architecture arch, 891 unsigned long mach) 892 { 893 if (! bfd_default_set_arch_mach (abfd, arch, mach)) 894 { 895 if (arch != bfd_arch_unknown) 896 return FALSE; 897 } 898 return TRUE; 899 } 900 901 /* Get the size of the headers, for the linker. */ 902 903 static int 904 ihex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, 905 struct bfd_link_info *info ATTRIBUTE_UNUSED) 906 { 907 return 0; 908 } 909 910 /* Some random definitions for the target vector. */ 911 912 #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup 913 #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info 914 #define ihex_new_section_hook _bfd_generic_new_section_hook 915 #define ihex_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 916 #define ihex_get_symtab_upper_bound bfd_0l 917 #define ihex_canonicalize_symtab ((long (*) (bfd *, asymbol **)) bfd_0l) 918 #define ihex_make_empty_symbol _bfd_generic_make_empty_symbol 919 #define ihex_print_symbol _bfd_nosymbols_print_symbol 920 #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info 921 #define ihex_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string 922 #define ihex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) 923 #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name 924 #define ihex_get_lineno _bfd_nosymbols_get_lineno 925 #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line 926 #define ihex_find_line _bfd_nosymbols_find_line 927 #define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info 928 #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 929 #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols 930 #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol 931 #define ihex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 932 #define ihex_bfd_relax_section bfd_generic_relax_section 933 #define ihex_bfd_gc_sections bfd_generic_gc_sections 934 #define ihex_bfd_lookup_section_flags bfd_generic_lookup_section_flags 935 #define ihex_bfd_merge_sections bfd_generic_merge_sections 936 #define ihex_bfd_is_group_section bfd_generic_is_group_section 937 #define ihex_bfd_discard_group bfd_generic_discard_group 938 #define ihex_section_already_linked _bfd_generic_section_already_linked 939 #define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol 940 #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 941 #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols 942 #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms 943 #define ihex_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type 944 #define ihex_bfd_final_link _bfd_generic_final_link 945 #define ihex_bfd_link_split_section _bfd_generic_link_split_section 946 #define ihex_bfd_link_check_relocs _bfd_generic_link_check_relocs 947 948 /* The Intel Hex target vector. */ 949 950 const bfd_target ihex_vec = 951 { 952 "ihex", /* Name. */ 953 bfd_target_ihex_flavour, 954 BFD_ENDIAN_UNKNOWN, /* Target byte order. */ 955 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ 956 0, /* Object flags. */ 957 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* Section flags. */ 958 0, /* Leading underscore. */ 959 ' ', /* AR_pad_char. */ 960 16, /* AR_max_namelen. */ 961 0, /* match priority. */ 962 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 963 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 964 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 965 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 966 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 967 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 968 969 { 970 _bfd_dummy_target, 971 ihex_object_p, /* bfd_check_format. */ 972 _bfd_dummy_target, 973 _bfd_dummy_target, 974 }, 975 { 976 bfd_false, 977 ihex_mkobject, 978 _bfd_generic_mkarchive, 979 bfd_false, 980 }, 981 { /* bfd_write_contents. */ 982 bfd_false, 983 ihex_write_object_contents, 984 _bfd_write_archive_contents, 985 bfd_false, 986 }, 987 988 BFD_JUMP_TABLE_GENERIC (ihex), 989 BFD_JUMP_TABLE_COPY (_bfd_generic), 990 BFD_JUMP_TABLE_CORE (_bfd_nocore), 991 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 992 BFD_JUMP_TABLE_SYMBOLS (ihex), 993 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 994 BFD_JUMP_TABLE_WRITE (ihex), 995 BFD_JUMP_TABLE_LINK (ihex), 996 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 997 998 NULL, 999 1000 NULL 1001 }; 1002
