| 1 | /* BFD back-end for Intel Hex objects. |
| 2 | Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002 |
| 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., 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" |
| 126 | #include "safe-ctype.h" |
| 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 |
| 140 | PARAMS ((bfd *, size_t, unsigned int, unsigned int, bfd_byte *)); |
| 141 | static boolean ihex_write_object_contents PARAMS ((bfd *)); |
| 142 | static boolean ihex_set_arch_mach |
| 143 | PARAMS ((bfd *, enum bfd_architecture, unsigned long)); |
| 144 | static int ihex_sizeof_headers PARAMS ((bfd *, boolean)); |
| 145 | |
| 146 | /* The number of bytes we put on one line during output. */ |
| 147 | |
| 148 | #define CHUNK 16 |
| 149 | |
| 150 | /* Macros for converting between hex and binary. */ |
| 151 | |
| 152 | #define NIBBLE(x) (hex_value (x)) |
| 153 | #define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) |
| 154 | #define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) |
| 155 | #define ISHEX(x) (hex_p (x)) |
| 156 | |
| 157 | /* When we write out an ihex value, the values can not be output as |
| 158 | they are seen. Instead, we hold them in memory in this structure. */ |
| 159 | |
| 160 | struct ihex_data_list |
| 161 | { |
| 162 | struct ihex_data_list *next; |
| 163 | bfd_byte *data; |
| 164 | bfd_vma where; |
| 165 | bfd_size_type size; |
| 166 | }; |
| 167 | |
| 168 | /* The ihex tdata information. */ |
| 169 | |
| 170 | struct ihex_data_struct |
| 171 | { |
| 172 | struct ihex_data_list *head; |
| 173 | struct ihex_data_list *tail; |
| 174 | }; |
| 175 | |
| 176 | /* Initialize by filling in the hex conversion array. */ |
| 177 | |
| 178 | static void |
| 179 | ihex_init () |
| 180 | { |
| 181 | static boolean inited; |
| 182 | |
| 183 | if (! inited) |
| 184 | { |
| 185 | inited = true; |
| 186 | hex_init (); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* Create an ihex object. */ |
| 191 | |
| 192 | static boolean |
| 193 | ihex_mkobject (abfd) |
| 194 | bfd *abfd; |
| 195 | { |
| 196 | if (abfd->tdata.ihex_data == NULL) |
| 197 | { |
| 198 | struct ihex_data_struct *tdata; |
| 199 | bfd_size_type amt = sizeof (struct ihex_data_struct); |
| 200 | |
| 201 | tdata = (struct ihex_data_struct *) bfd_alloc (abfd, amt); |
| 202 | if (tdata == NULL) |
| 203 | return false; |
| 204 | abfd->tdata.ihex_data = tdata; |
| 205 | tdata->head = NULL; |
| 206 | tdata->tail = NULL; |
| 207 | } |
| 208 | |
| 209 | return true; |
| 210 | } |
| 211 | |
| 212 | /* Read a byte from a BFD. Set *ERRORPTR if an error occurred. |
| 213 | Return EOF on error or end of file. */ |
| 214 | |
| 215 | static INLINE int |
| 216 | ihex_get_byte (abfd, errorptr) |
| 217 | bfd *abfd; |
| 218 | boolean *errorptr; |
| 219 | { |
| 220 | bfd_byte c; |
| 221 | |
| 222 | if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1) |
| 223 | { |
| 224 | if (bfd_get_error () != bfd_error_file_truncated) |
| 225 | *errorptr = true; |
| 226 | return EOF; |
| 227 | } |
| 228 | |
| 229 | return (int) (c & 0xff); |
| 230 | } |
| 231 | |
| 232 | /* Report a problem in an Intel Hex file. */ |
| 233 | |
| 234 | static void |
| 235 | ihex_bad_byte (abfd, lineno, c, error) |
| 236 | bfd *abfd; |
| 237 | unsigned int lineno; |
| 238 | int c; |
| 239 | boolean error; |
| 240 | { |
| 241 | if (c == EOF) |
| 242 | { |
| 243 | if (! error) |
| 244 | bfd_set_error (bfd_error_file_truncated); |
| 245 | } |
| 246 | else |
| 247 | { |
| 248 | char buf[10]; |
| 249 | |
| 250 | if (! ISPRINT (c)) |
| 251 | sprintf (buf, "\\%03o", (unsigned int) c); |
| 252 | else |
| 253 | { |
| 254 | buf[0] = c; |
| 255 | buf[1] = '\0'; |
| 256 | } |
| 257 | (*_bfd_error_handler) |
| 258 | (_("%s:%d: unexpected character `%s' in Intel Hex file\n"), |
| 259 | bfd_archive_filename (abfd), lineno, buf); |
| 260 | bfd_set_error (bfd_error_bad_value); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | /* Read an Intel hex file and turn it into sections. We create a new |
| 265 | section for each contiguous set of bytes. */ |
| 266 | |
| 267 | static boolean |
| 268 | ihex_scan (abfd) |
| 269 | bfd *abfd; |
| 270 | { |
| 271 | bfd_vma segbase; |
| 272 | bfd_vma extbase; |
| 273 | asection *sec; |
| 274 | unsigned int lineno; |
| 275 | boolean error; |
| 276 | bfd_byte *buf = NULL; |
| 277 | size_t bufsize; |
| 278 | int c; |
| 279 | |
| 280 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 281 | goto error_return; |
| 282 | |
| 283 | abfd->start_address = 0; |
| 284 | |
| 285 | segbase = 0; |
| 286 | extbase = 0; |
| 287 | sec = NULL; |
| 288 | lineno = 1; |
| 289 | error = false; |
| 290 | bufsize = 0; |
| 291 | |
| 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 | pos = bfd_tell (abfd) - 1; |
| 319 | |
| 320 | /* Read the header bytes. */ |
| 321 | if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
| 322 | goto error_return; |
| 323 | |
| 324 | for (i = 0; i < 8; i++) |
| 325 | { |
| 326 | if (! ISHEX (hdr[i])) |
| 327 | { |
| 328 | ihex_bad_byte (abfd, lineno, hdr[i], error); |
| 329 | goto error_return; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | len = HEX2 (hdr); |
| 334 | addr = HEX4 (hdr + 2); |
| 335 | type = HEX2 (hdr + 6); |
| 336 | |
| 337 | /* Read the data bytes. */ |
| 338 | chars = len * 2 + 2; |
| 339 | if (chars >= bufsize) |
| 340 | { |
| 341 | buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars); |
| 342 | if (buf == NULL) |
| 343 | goto error_return; |
| 344 | bufsize = chars; |
| 345 | } |
| 346 | |
| 347 | if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars) |
| 348 | goto error_return; |
| 349 | |
| 350 | for (i = 0; i < chars; i++) |
| 351 | { |
| 352 | if (! ISHEX (buf[i])) |
| 353 | { |
| 354 | ihex_bad_byte (abfd, lineno, hdr[i], error); |
| 355 | goto error_return; |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | /* Check the checksum. */ |
| 360 | chksum = len + addr + (addr >> 8) + type; |
| 361 | for (i = 0; i < len; i++) |
| 362 | chksum += HEX2 (buf + 2 * i); |
| 363 | if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) |
| 364 | { |
| 365 | (*_bfd_error_handler) |
| 366 | (_("%s:%u: bad checksum in Intel Hex file (expected %u, found %u)"), |
| 367 | bfd_archive_filename (abfd), lineno, |
| 368 | (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); |
| 369 | bfd_set_error (bfd_error_bad_value); |
| 370 | goto error_return; |
| 371 | } |
| 372 | |
| 373 | switch (type) |
| 374 | { |
| 375 | case 0: |
| 376 | /* This is a data record. */ |
| 377 | if (sec != NULL |
| 378 | && sec->vma + sec->_raw_size == extbase + segbase + addr) |
| 379 | { |
| 380 | /* This data goes at the end of the section we are |
| 381 | currently building. */ |
| 382 | sec->_raw_size += len; |
| 383 | } |
| 384 | else if (len > 0) |
| 385 | { |
| 386 | char secbuf[20]; |
| 387 | char *secname; |
| 388 | bfd_size_type amt; |
| 389 | |
| 390 | sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); |
| 391 | amt = strlen (secbuf) + 1; |
| 392 | secname = (char *) bfd_alloc (abfd, amt); |
| 393 | if (secname == NULL) |
| 394 | goto error_return; |
| 395 | strcpy (secname, secbuf); |
| 396 | sec = bfd_make_section (abfd, secname); |
| 397 | if (sec == NULL) |
| 398 | goto error_return; |
| 399 | sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; |
| 400 | sec->vma = extbase + segbase + addr; |
| 401 | sec->lma = extbase + segbase + addr; |
| 402 | sec->_raw_size = len; |
| 403 | sec->filepos = pos; |
| 404 | } |
| 405 | break; |
| 406 | |
| 407 | case 1: |
| 408 | /* An end record. */ |
| 409 | if (abfd->start_address == 0) |
| 410 | abfd->start_address = addr; |
| 411 | if (buf != NULL) |
| 412 | free (buf); |
| 413 | return true; |
| 414 | |
| 415 | case 2: |
| 416 | /* An extended address record. */ |
| 417 | if (len != 2) |
| 418 | { |
| 419 | (*_bfd_error_handler) |
| 420 | (_("%s:%u: bad extended address record length in Intel Hex file"), |
| 421 | bfd_archive_filename (abfd), lineno); |
| 422 | bfd_set_error (bfd_error_bad_value); |
| 423 | goto error_return; |
| 424 | } |
| 425 | |
| 426 | segbase = HEX4 (buf) << 4; |
| 427 | |
| 428 | sec = NULL; |
| 429 | |
| 430 | break; |
| 431 | |
| 432 | case 3: |
| 433 | /* An extended start address record. */ |
| 434 | if (len != 4) |
| 435 | { |
| 436 | (*_bfd_error_handler) |
| 437 | (_("%s:%u: bad extended start address length in Intel Hex file"), |
| 438 | bfd_archive_filename (abfd), lineno); |
| 439 | bfd_set_error (bfd_error_bad_value); |
| 440 | goto error_return; |
| 441 | } |
| 442 | |
| 443 | abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); |
| 444 | |
| 445 | sec = NULL; |
| 446 | |
| 447 | break; |
| 448 | |
| 449 | case 4: |
| 450 | /* An extended linear address record. */ |
| 451 | if (len != 2) |
| 452 | { |
| 453 | (*_bfd_error_handler) |
| 454 | (_("%s:%u: bad extended linear address record length in Intel Hex file"), |
| 455 | bfd_archive_filename (abfd), lineno); |
| 456 | bfd_set_error (bfd_error_bad_value); |
| 457 | goto error_return; |
| 458 | } |
| 459 | |
| 460 | extbase = HEX4 (buf) << 16; |
| 461 | |
| 462 | sec = NULL; |
| 463 | |
| 464 | break; |
| 465 | |
| 466 | case 5: |
| 467 | /* An extended linear start address record. */ |
| 468 | if (len != 2 && len != 4) |
| 469 | { |
| 470 | (*_bfd_error_handler) |
| 471 | (_("%s:%u: bad extended linear start address length in Intel Hex file"), |
| 472 | bfd_archive_filename (abfd), lineno); |
| 473 | bfd_set_error (bfd_error_bad_value); |
| 474 | goto error_return; |
| 475 | } |
| 476 | |
| 477 | if (len == 2) |
| 478 | abfd->start_address += HEX4 (buf) << 16; |
| 479 | else |
| 480 | abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); |
| 481 | |
| 482 | sec = NULL; |
| 483 | |
| 484 | break; |
| 485 | |
| 486 | default: |
| 487 | (*_bfd_error_handler) |
| 488 | (_("%s:%u: unrecognized ihex type %u in Intel Hex file\n"), |
| 489 | bfd_archive_filename (abfd), lineno, type); |
| 490 | bfd_set_error (bfd_error_bad_value); |
| 491 | goto error_return; |
| 492 | } |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | if (error) |
| 497 | goto error_return; |
| 498 | |
| 499 | if (buf != NULL) |
| 500 | free (buf); |
| 501 | |
| 502 | return true; |
| 503 | |
| 504 | error_return: |
| 505 | if (buf != NULL) |
| 506 | free (buf); |
| 507 | return false; |
| 508 | } |
| 509 | |
| 510 | /* Try to recognize an Intel Hex file. */ |
| 511 | |
| 512 | static const bfd_target * |
| 513 | ihex_object_p (abfd) |
| 514 | bfd *abfd; |
| 515 | { |
| 516 | bfd_byte b[9]; |
| 517 | unsigned int i; |
| 518 | unsigned int type; |
| 519 | |
| 520 | ihex_init (); |
| 521 | |
| 522 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 523 | return NULL; |
| 524 | if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9) |
| 525 | { |
| 526 | if (bfd_get_error () == bfd_error_file_truncated) |
| 527 | bfd_set_error (bfd_error_wrong_format); |
| 528 | return NULL; |
| 529 | } |
| 530 | |
| 531 | if (b[0] != ':') |
| 532 | { |
| 533 | bfd_set_error (bfd_error_wrong_format); |
| 534 | return NULL; |
| 535 | } |
| 536 | |
| 537 | for (i = 1; i < 9; i++) |
| 538 | { |
| 539 | if (! ISHEX (b[i])) |
| 540 | { |
| 541 | bfd_set_error (bfd_error_wrong_format); |
| 542 | return NULL; |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | type = HEX2 (b + 7); |
| 547 | if (type > 5) |
| 548 | { |
| 549 | bfd_set_error (bfd_error_wrong_format); |
| 550 | return NULL; |
| 551 | } |
| 552 | |
| 553 | /* OK, it looks like it really is an Intel Hex file. */ |
| 554 | if (! ihex_mkobject (abfd) |
| 555 | || ! ihex_scan (abfd)) |
| 556 | return NULL; |
| 557 | |
| 558 | return abfd->xvec; |
| 559 | } |
| 560 | |
| 561 | /* Read the contents of a section in an Intel Hex file. */ |
| 562 | |
| 563 | static boolean |
| 564 | ihex_read_section (abfd, section, contents) |
| 565 | bfd *abfd; |
| 566 | asection *section; |
| 567 | bfd_byte *contents; |
| 568 | { |
| 569 | int c; |
| 570 | bfd_byte *p; |
| 571 | bfd_byte *buf = NULL; |
| 572 | size_t bufsize; |
| 573 | boolean error; |
| 574 | |
| 575 | if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) |
| 576 | goto error_return; |
| 577 | |
| 578 | p = contents; |
| 579 | bufsize = 0; |
| 580 | error = false; |
| 581 | while ((c = ihex_get_byte (abfd, &error)) != EOF) |
| 582 | { |
| 583 | char hdr[8]; |
| 584 | unsigned int len; |
| 585 | bfd_vma addr; |
| 586 | unsigned int type; |
| 587 | unsigned int i; |
| 588 | |
| 589 | if (c == '\r' || c == '\n') |
| 590 | continue; |
| 591 | |
| 592 | /* This is called after ihex_scan has succeeded, so we ought to |
| 593 | know the exact format. */ |
| 594 | BFD_ASSERT (c == ':'); |
| 595 | |
| 596 | if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
| 597 | goto error_return; |
| 598 | |
| 599 | len = HEX2 (hdr); |
| 600 | addr = HEX4 (hdr + 2); |
| 601 | type = HEX2 (hdr + 6); |
| 602 | |
| 603 | /* We should only see type 0 records here. */ |
| 604 | if (type != 0) |
| 605 | { |
| 606 | (*_bfd_error_handler) |
| 607 | (_("%s: internal error in ihex_read_section"), |
| 608 | bfd_archive_filename (abfd)); |
| 609 | bfd_set_error (bfd_error_bad_value); |
| 610 | goto error_return; |
| 611 | } |
| 612 | |
| 613 | if (len * 2 > bufsize) |
| 614 | { |
| 615 | buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) len * 2); |
| 616 | if (buf == NULL) |
| 617 | goto error_return; |
| 618 | bufsize = len * 2; |
| 619 | } |
| 620 | |
| 621 | if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2) |
| 622 | goto error_return; |
| 623 | |
| 624 | for (i = 0; i < len; i++) |
| 625 | *p++ = HEX2 (buf + 2 * i); |
| 626 | if ((bfd_size_type) (p - contents) >= section->_raw_size) |
| 627 | { |
| 628 | /* We've read everything in the section. */ |
| 629 | if (buf != NULL) |
| 630 | free (buf); |
| 631 | return true; |
| 632 | } |
| 633 | |
| 634 | /* Skip the checksum. */ |
| 635 | if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2) |
| 636 | goto error_return; |
| 637 | } |
| 638 | |
| 639 | if ((bfd_size_type) (p - contents) < section->_raw_size) |
| 640 | { |
| 641 | (*_bfd_error_handler) |
| 642 | (_("%s: bad section length in ihex_read_section"), |
| 643 | bfd_archive_filename (abfd)); |
| 644 | bfd_set_error (bfd_error_bad_value); |
| 645 | goto error_return; |
| 646 | } |
| 647 | |
| 648 | if (buf != NULL) |
| 649 | free (buf); |
| 650 | |
| 651 | return true; |
| 652 | |
| 653 | error_return: |
| 654 | if (buf != NULL) |
| 655 | free (buf); |
| 656 | return false; |
| 657 | } |
| 658 | |
| 659 | /* Get the contents of a section in an Intel Hex file. */ |
| 660 | |
| 661 | static boolean |
| 662 | ihex_get_section_contents (abfd, section, location, offset, count) |
| 663 | bfd *abfd; |
| 664 | asection *section; |
| 665 | PTR location; |
| 666 | file_ptr offset; |
| 667 | bfd_size_type count; |
| 668 | { |
| 669 | if (section->used_by_bfd == NULL) |
| 670 | { |
| 671 | section->used_by_bfd = bfd_alloc (abfd, section->_raw_size); |
| 672 | if (section->used_by_bfd == NULL) |
| 673 | return false; |
| 674 | if (! ihex_read_section (abfd, section, section->used_by_bfd)) |
| 675 | return false; |
| 676 | } |
| 677 | |
| 678 | memcpy (location, (bfd_byte *) section->used_by_bfd + offset, |
| 679 | (size_t) count); |
| 680 | |
| 681 | return true; |
| 682 | } |
| 683 | |
| 684 | /* Set the contents of a section in an Intel Hex file. */ |
| 685 | |
| 686 | static boolean |
| 687 | ihex_set_section_contents (abfd, section, location, offset, count) |
| 688 | bfd *abfd; |
| 689 | asection *section; |
| 690 | PTR location; |
| 691 | file_ptr offset; |
| 692 | bfd_size_type count; |
| 693 | { |
| 694 | struct ihex_data_list *n; |
| 695 | bfd_byte *data; |
| 696 | struct ihex_data_struct *tdata; |
| 697 | bfd_size_type amt; |
| 698 | |
| 699 | if (count == 0 |
| 700 | || (section->flags & SEC_ALLOC) == 0 |
| 701 | || (section->flags & SEC_LOAD) == 0) |
| 702 | return true; |
| 703 | |
| 704 | amt = sizeof (struct ihex_data_list); |
| 705 | n = (struct ihex_data_list *) bfd_alloc (abfd, amt); |
| 706 | if (n == NULL) |
| 707 | return false; |
| 708 | |
| 709 | data = (bfd_byte *) bfd_alloc (abfd, count); |
| 710 | if (data == NULL) |
| 711 | return false; |
| 712 | memcpy (data, location, (size_t) count); |
| 713 | |
| 714 | n->data = data; |
| 715 | n->where = section->lma + offset; |
| 716 | n->size = count; |
| 717 | |
| 718 | /* Sort the records by address. Optimize for the common case of |
| 719 | adding a record to the end of the list. */ |
| 720 | tdata = abfd->tdata.ihex_data; |
| 721 | if (tdata->tail != NULL |
| 722 | && n->where >= tdata->tail->where) |
| 723 | { |
| 724 | tdata->tail->next = n; |
| 725 | n->next = NULL; |
| 726 | tdata->tail = n; |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | register struct ihex_data_list **pp; |
| 731 | |
| 732 | for (pp = &tdata->head; |
| 733 | *pp != NULL && (*pp)->where < n->where; |
| 734 | pp = &(*pp)->next) |
| 735 | ; |
| 736 | n->next = *pp; |
| 737 | *pp = n; |
| 738 | if (n->next == NULL) |
| 739 | tdata->tail = n; |
| 740 | } |
| 741 | |
| 742 | return true; |
| 743 | } |
| 744 | |
| 745 | /* Write a record out to an Intel Hex file. */ |
| 746 | |
| 747 | static boolean |
| 748 | ihex_write_record (abfd, count, addr, type, data) |
| 749 | bfd *abfd; |
| 750 | size_t count; |
| 751 | unsigned int addr; |
| 752 | unsigned int type; |
| 753 | bfd_byte *data; |
| 754 | { |
| 755 | static const char digs[] = "0123456789ABCDEF"; |
| 756 | char buf[9 + CHUNK * 2 + 4]; |
| 757 | char *p; |
| 758 | unsigned int chksum; |
| 759 | unsigned int i; |
| 760 | size_t total; |
| 761 | |
| 762 | #define TOHEX(buf, v) \ |
| 763 | ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf]) |
| 764 | |
| 765 | buf[0] = ':'; |
| 766 | TOHEX (buf + 1, count); |
| 767 | TOHEX (buf + 3, (addr >> 8) & 0xff); |
| 768 | TOHEX (buf + 5, addr & 0xff); |
| 769 | TOHEX (buf + 7, type); |
| 770 | |
| 771 | chksum = count + addr + (addr >> 8) + type; |
| 772 | |
| 773 | for (i = 0, p = buf + 9; i < count; i++, p += 2, data++) |
| 774 | { |
| 775 | TOHEX (p, *data); |
| 776 | chksum += *data; |
| 777 | } |
| 778 | |
| 779 | TOHEX (p, (- chksum) & 0xff); |
| 780 | p[2] = '\r'; |
| 781 | p[3] = '\n'; |
| 782 | |
| 783 | total = 9 + count * 2 + 4; |
| 784 | if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total) |
| 785 | return false; |
| 786 | |
| 787 | return true; |
| 788 | } |
| 789 | |
| 790 | /* Write out an Intel Hex file. */ |
| 791 | |
| 792 | static boolean |
| 793 | ihex_write_object_contents (abfd) |
| 794 | bfd *abfd; |
| 795 | { |
| 796 | bfd_vma segbase; |
| 797 | bfd_vma extbase; |
| 798 | struct ihex_data_list *l; |
| 799 | |
| 800 | segbase = 0; |
| 801 | extbase = 0; |
| 802 | for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next) |
| 803 | { |
| 804 | bfd_vma where; |
| 805 | bfd_byte *p; |
| 806 | bfd_size_type count; |
| 807 | |
| 808 | where = l->where; |
| 809 | p = l->data; |
| 810 | count = l->size; |
| 811 | while (count > 0) |
| 812 | { |
| 813 | size_t now; |
| 814 | unsigned int rec_addr; |
| 815 | |
| 816 | now = count; |
| 817 | if (count > CHUNK) |
| 818 | now = CHUNK; |
| 819 | |
| 820 | if (where > segbase + extbase + 0xffff) |
| 821 | { |
| 822 | bfd_byte addr[2]; |
| 823 | |
| 824 | /* We need a new base address. */ |
| 825 | if (where <= 0xfffff) |
| 826 | { |
| 827 | /* The addresses should be sorted. */ |
| 828 | BFD_ASSERT (extbase == 0); |
| 829 | |
| 830 | segbase = where & 0xf0000; |
| 831 | addr[0] = (bfd_byte)(segbase >> 12) & 0xff; |
| 832 | addr[1] = (bfd_byte)(segbase >> 4) & 0xff; |
| 833 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) |
| 834 | return false; |
| 835 | } |
| 836 | else |
| 837 | { |
| 838 | /* The extended address record and the extended |
| 839 | linear address record are combined, at least by |
| 840 | some readers. We need an extended linear address |
| 841 | record here, so if we've already written out an |
| 842 | extended address record, zero it out to avoid |
| 843 | confusion. */ |
| 844 | if (segbase != 0) |
| 845 | { |
| 846 | addr[0] = 0; |
| 847 | addr[1] = 0; |
| 848 | if (! ihex_write_record (abfd, 2, 0, 2, addr)) |
| 849 | return false; |
| 850 | segbase = 0; |
| 851 | } |
| 852 | |
| 853 | extbase = where & 0xffff0000; |
| 854 | if (where > extbase + 0xffff) |
| 855 | { |
| 856 | char buf[20]; |
| 857 | |
| 858 | sprintf_vma (buf, where); |
| 859 | (*_bfd_error_handler) |
| 860 | (_("%s: address 0x%s out of range for Intel Hex file"), |
| 861 | bfd_get_filename (abfd), buf); |
| 862 | bfd_set_error (bfd_error_bad_value); |
| 863 | return false; |
| 864 | } |
| 865 | addr[0] = (bfd_byte)(extbase >> 24) & 0xff; |
| 866 | addr[1] = (bfd_byte)(extbase >> 16) & 0xff; |
| 867 | if (! ihex_write_record (abfd, 2, 0, 4, addr)) |
| 868 | return false; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | rec_addr = where - (extbase + segbase); |
| 873 | |
| 874 | /* Output records shouldn't cross 64K boundaries. */ |
| 875 | if (rec_addr + now > 0xffff) |
| 876 | now = 0x10000 - rec_addr; |
| 877 | |
| 878 | if (! ihex_write_record (abfd, now, rec_addr, 0, p)) |
| 879 | return false; |
| 880 | |
| 881 | where += now; |
| 882 | p += now; |
| 883 | count -= now; |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | if (abfd->start_address != 0) |
| 888 | { |
| 889 | bfd_vma start; |
| 890 | bfd_byte startbuf[4]; |
| 891 | |
| 892 | start = abfd->start_address; |
| 893 | |
| 894 | if (start <= 0xfffff) |
| 895 | { |
| 896 | startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff; |
| 897 | startbuf[1] = 0; |
| 898 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; |
| 899 | startbuf[3] = (bfd_byte)start & 0xff; |
| 900 | if (! ihex_write_record (abfd, 4, 0, 3, startbuf)) |
| 901 | return false; |
| 902 | } |
| 903 | else |
| 904 | { |
| 905 | startbuf[0] = (bfd_byte)(start >> 24) & 0xff; |
| 906 | startbuf[1] = (bfd_byte)(start >> 16) & 0xff; |
| 907 | startbuf[2] = (bfd_byte)(start >> 8) & 0xff; |
| 908 | startbuf[3] = (bfd_byte)start & 0xff; |
| 909 | if (! ihex_write_record (abfd, 4, 0, 5, startbuf)) |
| 910 | return false; |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | if (! ihex_write_record (abfd, 0, 0, 1, NULL)) |
| 915 | return false; |
| 916 | |
| 917 | return true; |
| 918 | } |
| 919 | |
| 920 | /* Set the architecture for the output file. The architecture is |
| 921 | irrelevant, so we ignore errors about unknown architectures. */ |
| 922 | |
| 923 | static boolean |
| 924 | ihex_set_arch_mach (abfd, arch, mach) |
| 925 | bfd *abfd; |
| 926 | enum bfd_architecture arch; |
| 927 | unsigned long mach; |
| 928 | { |
| 929 | if (! bfd_default_set_arch_mach (abfd, arch, mach)) |
| 930 | { |
| 931 | if (arch != bfd_arch_unknown) |
| 932 | return false; |
| 933 | } |
| 934 | return true; |
| 935 | } |
| 936 | |
| 937 | /* Get the size of the headers, for the linker. */ |
| 938 | |
| 939 | /*ARGSUSED*/ |
| 940 | static int |
| 941 | ihex_sizeof_headers (abfd, exec) |
| 942 | bfd *abfd ATTRIBUTE_UNUSED; |
| 943 | boolean exec ATTRIBUTE_UNUSED; |
| 944 | { |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | /* Some random definitions for the target vector. */ |
| 949 | |
| 950 | #define ihex_close_and_cleanup _bfd_generic_close_and_cleanup |
| 951 | #define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 952 | #define ihex_new_section_hook _bfd_generic_new_section_hook |
| 953 | #define ihex_get_section_contents_in_window \ |
| 954 | _bfd_generic_get_section_contents_in_window |
| 955 | |
| 956 | #define ihex_get_symtab_upper_bound bfd_0l |
| 957 | #define ihex_get_symtab \ |
| 958 | ((long (*) PARAMS ((bfd *, asymbol **))) bfd_0l) |
| 959 | #define ihex_make_empty_symbol _bfd_generic_make_empty_symbol |
| 960 | #define ihex_print_symbol _bfd_nosymbols_print_symbol |
| 961 | #define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info |
| 962 | #define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
| 963 | #define ihex_get_lineno _bfd_nosymbols_get_lineno |
| 964 | #define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line |
| 965 | #define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 966 | #define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols |
| 967 | #define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol |
| 968 | |
| 969 | #define ihex_get_reloc_upper_bound \ |
| 970 | ((long (*) PARAMS ((bfd *, asection *))) bfd_0l) |
| 971 | #define ihex_canonicalize_reloc \ |
| 972 | ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l) |
| 973 | #define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| 974 | |
| 975 | #define ihex_bfd_get_relocated_section_contents \ |
| 976 | bfd_generic_get_relocated_section_contents |
| 977 | #define ihex_bfd_relax_section bfd_generic_relax_section |
| 978 | #define ihex_bfd_gc_sections bfd_generic_gc_sections |
| 979 | #define ihex_bfd_merge_sections bfd_generic_merge_sections |
| 980 | #define ihex_bfd_discard_group bfd_generic_discard_group |
| 981 | #define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 982 | #define ihex_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| 983 | #define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 984 | #define ihex_bfd_link_just_syms _bfd_generic_link_just_syms |
| 985 | #define ihex_bfd_final_link _bfd_generic_final_link |
| 986 | #define ihex_bfd_link_split_section _bfd_generic_link_split_section |
| 987 | |
| 988 | /* The Intel Hex target vector. */ |
| 989 | |
| 990 | const bfd_target ihex_vec = |
| 991 | { |
| 992 | "ihex", /* name */ |
| 993 | bfd_target_ihex_flavour, |
| 994 | BFD_ENDIAN_UNKNOWN, /* target byte order */ |
| 995 | BFD_ENDIAN_UNKNOWN, /* target headers byte order */ |
| 996 | 0, /* object flags */ |
| 997 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */ |
| 998 | 0, /* leading underscore */ |
| 999 | ' ', /* ar_pad_char */ |
| 1000 | 16, /* ar_max_namelen */ |
| 1001 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 1002 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 1003 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ |
| 1004 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 1005 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 1006 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ |
| 1007 | |
| 1008 | { |
| 1009 | _bfd_dummy_target, |
| 1010 | ihex_object_p, /* bfd_check_format */ |
| 1011 | _bfd_dummy_target, |
| 1012 | _bfd_dummy_target, |
| 1013 | }, |
| 1014 | { |
| 1015 | bfd_false, |
| 1016 | ihex_mkobject, |
| 1017 | _bfd_generic_mkarchive, |
| 1018 | bfd_false, |
| 1019 | }, |
| 1020 | { /* bfd_write_contents */ |
| 1021 | bfd_false, |
| 1022 | ihex_write_object_contents, |
| 1023 | _bfd_write_archive_contents, |
| 1024 | bfd_false, |
| 1025 | }, |
| 1026 | |
| 1027 | BFD_JUMP_TABLE_GENERIC (ihex), |
| 1028 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 1029 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 1030 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 1031 | BFD_JUMP_TABLE_SYMBOLS (ihex), |
| 1032 | BFD_JUMP_TABLE_RELOCS (ihex), |
| 1033 | BFD_JUMP_TABLE_WRITE (ihex), |
| 1034 | BFD_JUMP_TABLE_LINK (ihex), |
| 1035 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 1036 | |
| 1037 | NULL, |
| 1038 | |
| 1039 | (PTR) 0 |
| 1040 | }; |