1 /*- 2 * Copyright (c) 2009,2010 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include "_libdwarf.h" 28 29 ELFTC_VCSID("$Id: libdwarf_lineno.c 3100 2014-10-25 20:34:29Z jkoshy $"); 30 31 static int 32 _dwarf_lineno_add_file(Dwarf_LineInfo li, uint8_t **p, const char *compdir, 33 Dwarf_Error *error, Dwarf_Debug dbg) 34 { 35 Dwarf_LineFile lf; 36 const char *dirname; 37 uint8_t *src; 38 int slen; 39 40 src = *p; 41 42 if ((lf = malloc(sizeof(struct _Dwarf_LineFile))) == NULL) { 43 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); 44 return (DW_DLE_MEMORY); 45 } 46 47 lf->lf_fullpath = NULL; 48 lf->lf_fname = (char *) src; 49 src += strlen(lf->lf_fname) + 1; 50 lf->lf_dirndx = _dwarf_decode_uleb128(&src); 51 if (lf->lf_dirndx > li->li_inclen) { 52 free(lf); 53 DWARF_SET_ERROR(dbg, error, DW_DLE_DIR_INDEX_BAD); 54 return (DW_DLE_DIR_INDEX_BAD); 55 } 56 57 /* Make full pathname if need. */ 58 if (*lf->lf_fname != '/') { 59 dirname = compdir; 60 if (lf->lf_dirndx > 0) 61 dirname = li->li_incdirs[lf->lf_dirndx - 1]; 62 if (dirname != NULL) { 63 slen = strlen(dirname) + strlen(lf->lf_fname) + 2; 64 if ((lf->lf_fullpath = malloc(slen)) == NULL) { 65 free(lf); 66 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); 67 return (DW_DLE_MEMORY); 68 } 69 snprintf(lf->lf_fullpath, slen, "%s/%s", dirname, 70 lf->lf_fname); 71 } 72 } 73 74 lf->lf_mtime = _dwarf_decode_uleb128(&src); 75 lf->lf_size = _dwarf_decode_uleb128(&src); 76 STAILQ_INSERT_TAIL(&li->li_lflist, lf, lf_next); 77 li->li_lflen++; 78 79 *p = src; 80 81 return (DW_DLE_NONE); 82 } 83 84 static int 85 _dwarf_lineno_run_program(Dwarf_CU cu, Dwarf_LineInfo li, uint8_t *p, 86 uint8_t *pe, const char *compdir, Dwarf_Error *error) 87 { 88 Dwarf_Debug dbg; 89 Dwarf_Line ln, tln; 90 uint64_t address, file, line, column, opsize; 91 int is_stmt, basic_block, end_sequence; 92 int ret; 93 94 #define RESET_REGISTERS \ 95 do { \ 96 address = 0; \ 97 file = 1; \ 98 line = 1; \ 99 column = 0; \ 100 is_stmt = li->li_defstmt; \ 101 basic_block = 0; \ 102 end_sequence = 0; \ 103 } while(0) 104 105 #define APPEND_ROW \ 106 do { \ 107 ln = malloc(sizeof(struct _Dwarf_Line)); \ 108 if (ln == NULL) { \ 109 ret = DW_DLE_MEMORY; \ 110 DWARF_SET_ERROR(dbg, error, ret); \ 111 goto prog_fail; \ 112 } \ 113 ln->ln_li = li; \ 114 ln->ln_addr = address; \ 115 ln->ln_symndx = 0; \ 116 ln->ln_fileno = file; \ 117 ln->ln_lineno = line; \ 118 ln->ln_column = column; \ 119 ln->ln_bblock = basic_block; \ 120 ln->ln_stmt = is_stmt; \ 121 ln->ln_endseq = end_sequence; \ 122 STAILQ_INSERT_TAIL(&li->li_lnlist, ln, ln_next);\ 123 li->li_lnlen++; \ 124 } while(0) 125 126 #define LINE(x) (li->li_lbase + (((x) - li->li_opbase) % li->li_lrange)) 127 #define ADDRESS(x) ((((x) - li->li_opbase) / li->li_lrange) * li->li_minlen) 128 129 dbg = cu->cu_dbg; 130 131 /* 132 * Set registers to their default values. 133 */ 134 RESET_REGISTERS; 135 136 /* 137 * Start line number program. 138 */ 139 while (p < pe) { 140 if (*p == 0) { 141 142 /* 143 * Extended Opcodes. 144 */ 145 146 p++; 147 opsize = _dwarf_decode_uleb128(&p); 148 switch (*p) { 149 case DW_LNE_end_sequence: 150 p++; 151 end_sequence = 1; 152 APPEND_ROW; 153 RESET_REGISTERS; 154 break; 155 case DW_LNE_set_address: 156 p++; 157 address = dbg->decode(&p, cu->cu_pointer_size); 158 break; 159 case DW_LNE_define_file: 160 p++; 161 ret = _dwarf_lineno_add_file(li, &p, compdir, 162 error, dbg); 163 if (ret != DW_DLE_NONE) 164 goto prog_fail; 165 break; 166 default: 167 /* Unrecognized extened opcodes. */ 168 p += opsize; 169 } 170 171 } else if (*p > 0 && *p < li->li_opbase) { 172 173 /* 174 * Standard Opcodes. 175 */ 176 177 switch (*p++) { 178 case DW_LNS_copy: 179 APPEND_ROW; 180 basic_block = 0; 181 break; 182 case DW_LNS_advance_pc: 183 address += _dwarf_decode_uleb128(&p) * 184 li->li_minlen; 185 break; 186 case DW_LNS_advance_line: 187 line += _dwarf_decode_sleb128(&p); 188 break; 189 case DW_LNS_set_file: 190 file = _dwarf_decode_uleb128(&p); 191 break; 192 case DW_LNS_set_column: 193 column = _dwarf_decode_uleb128(&p); 194 break; 195 case DW_LNS_negate_stmt: 196 is_stmt = !is_stmt; 197 break; 198 case DW_LNS_set_basic_block: 199 basic_block = 1; 200 break; 201 case DW_LNS_const_add_pc: 202 address += ADDRESS(255); 203 break; 204 case DW_LNS_fixed_advance_pc: 205 address += dbg->decode(&p, 2); 206 break; 207 case DW_LNS_set_prologue_end: 208 break; 209 case DW_LNS_set_epilogue_begin: 210 break; 211 case DW_LNS_set_isa: 212 (void) _dwarf_decode_uleb128(&p); 213 break; 214 default: 215 /* Unrecognized extened opcodes. What to do? */ 216 break; 217 } 218 219 } else { 220 221 /* 222 * Special Opcodes. 223 */ 224 225 line += LINE(*p); 226 address += ADDRESS(*p); 227 APPEND_ROW; 228 basic_block = 0; 229 p++; 230 } 231 } 232 233 return (DW_DLE_NONE); 234 235 prog_fail: 236 237 STAILQ_FOREACH_SAFE(ln, &li->li_lnlist, ln_next, tln) { 238 STAILQ_REMOVE(&li->li_lnlist, ln, _Dwarf_Line, ln_next); 239 free(ln); 240 } 241 242 return (ret); 243 244 #undef RESET_REGISTERS 245 #undef APPEND_ROW 246 #undef LINE 247 #undef ADDRESS 248 } 249 250 int 251 _dwarf_lineno_init(Dwarf_Die die, uint64_t offset, Dwarf_Error *error) 252 { 253 Dwarf_Debug dbg; 254 Dwarf_Section *ds; 255 Dwarf_CU cu; 256 Dwarf_Attribute at; 257 Dwarf_LineInfo li; 258 Dwarf_LineFile lf, tlf; 259 const char *compdir; 260 uint64_t length, hdroff, endoff; 261 uint8_t *p; 262 int dwarf_size, i, ret; 263 264 cu = die->die_cu; 265 assert(cu != NULL); 266 267 dbg = cu->cu_dbg; 268 assert(dbg != NULL); 269 270 if ((ds = _dwarf_find_section(dbg, ".debug_line")) == NULL) 271 return (DW_DLE_NONE); 272 273 /* 274 * Try to find out the dir where the CU was compiled. Later we 275 * will use the dir to create full pathnames, if need. 276 */ 277 compdir = NULL; 278 at = _dwarf_attr_find(die, DW_AT_comp_dir); 279 if (at != NULL) { 280 switch (at->at_form) { 281 case DW_FORM_strp: 282 compdir = at->u[1].s; 283 break; 284 case DW_FORM_string: 285 compdir = at->u[0].s; 286 break; 287 default: 288 break; 289 } 290 } 291 292 length = dbg->read(ds->ds_data, &offset, 4); 293 if (length == 0xffffffff) { 294 dwarf_size = 8; 295 length = dbg->read(ds->ds_data, &offset, 8); 296 } else 297 dwarf_size = 4; 298 299 if (length > ds->ds_size - offset) { 300 DWARF_SET_ERROR(dbg, error, DW_DLE_DEBUG_LINE_LENGTH_BAD); 301 return (DW_DLE_DEBUG_LINE_LENGTH_BAD); 302 } 303 304 if ((li = calloc(1, sizeof(struct _Dwarf_LineInfo))) == NULL) { 305 DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); 306 return (DW_DLE_MEMORY); 307 } 308 309 /* 310 * Read in line number program header. 311 */ 312 li->li_length = length; 313 endoff = offset + length; 314 li->li_version = dbg->read(ds->ds_data, &offset, 2); /* FIXME: verify version */ 315 li->li_hdrlen = dbg->read(ds->ds_data, &offset, dwarf_size); 316 hdroff = offset; 317 li->li_minlen = dbg->read(ds->ds_data, &offset, 1); 318 li->li_defstmt = dbg->read(ds->ds_data, &offset, 1); 319 li->li_lbase = dbg->read(ds->ds_data, &offset, 1); 320 li->li_lrange = dbg->read(ds->ds_data, &offset, 1); 321 li->li_opbase = dbg->read(ds->ds_data, &offset, 1); 322 STAILQ_INIT(&li->li_lflist); 323 STAILQ_INIT(&li->li_lnlist); 324 325 if ((int)li->li_hdrlen - 5 < li->li_opbase - 1) { 326 ret = DW_DLE_DEBUG_LINE_LENGTH_BAD; 327 DWARF_SET_ERROR(dbg, error, ret); 328 goto fail_cleanup; 329 } 330 331 if ((li->li_oplen = malloc(li->li_opbase)) == NULL) { 332 ret = DW_DLE_MEMORY; 333 DWARF_SET_ERROR(dbg, error, ret); 334 goto fail_cleanup; 335 } 336 337 /* 338 * Read in std opcode arg length list. Note that the first 339 * element is not used. 340 */ 341 for (i = 1; i < li->li_opbase; i++) 342 li->li_oplen[i] = dbg->read(ds->ds_data, &offset, 1); 343 344 /* 345 * Check how many strings in the include dir string array. 346 */ 347 length = 0; 348 p = ds->ds_data + offset; 349 while (*p != '\0') { 350 while (*p++ != '\0') 351 ; 352 length++; 353 } 354 li->li_inclen = length; 355 356 /* Sanity check. */ 357 if (p - ds->ds_data > (int) ds->ds_size) { 358 ret = DW_DLE_DEBUG_LINE_LENGTH_BAD; 359 DWARF_SET_ERROR(dbg, error, ret); 360 goto fail_cleanup; 361 } 362 363 if (length != 0) { 364 if ((li->li_incdirs = malloc(length * sizeof(char *))) == 365 NULL) { 366 ret = DW_DLE_MEMORY; 367 DWARF_SET_ERROR(dbg, error, ret); 368 goto fail_cleanup; 369 } 370 } 371 372 /* Fill in include dir array. */ 373 i = 0; 374 p = ds->ds_data + offset; 375 while (*p != '\0') { 376 li->li_incdirs[i++] = (char *) p; 377 while (*p++ != '\0') 378 ; 379 } 380 381 p++; 382 383 /* 384 * Process file list. 385 */ 386 while (*p != '\0') { 387 ret = _dwarf_lineno_add_file(li, &p, compdir, error, dbg); 388 if (ret != DW_DLE_NONE) 389 goto fail_cleanup; 390 if (p - ds->ds_data > (int) ds->ds_size) { 391 ret = DW_DLE_DEBUG_LINE_LENGTH_BAD; 392 DWARF_SET_ERROR(dbg, error, ret); 393 goto fail_cleanup; 394 } 395 } 396 397 p++; 398 399 /* Sanity check. */ 400 if (p - ds->ds_data - hdroff != li->li_hdrlen) { 401 ret = DW_DLE_DEBUG_LINE_LENGTH_BAD; 402 DWARF_SET_ERROR(dbg, error, ret); 403 goto fail_cleanup; 404 } 405 406 /* 407 * Process line number program. 408 */ 409 ret = _dwarf_lineno_run_program(cu, li, p, ds->ds_data + endoff, compdir, 410 error); 411 if (ret != DW_DLE_NONE) 412 goto fail_cleanup; 413 414 cu->cu_lineinfo = li; 415 416 return (DW_DLE_NONE); 417 418 fail_cleanup: 419 420 STAILQ_FOREACH_SAFE(lf, &li->li_lflist, lf_next, tlf) { 421 STAILQ_REMOVE(&li->li_lflist, lf, _Dwarf_LineFile, lf_next); 422 if (lf->lf_fullpath) 423 free(lf->lf_fullpath); 424 free(lf); 425 } 426 427 if (li->li_oplen) 428 free(li->li_oplen); 429 if (li->li_incdirs) 430 free(li->li_incdirs); 431 free(li); 432 433 return (ret); 434 } 435 436 void 437 _dwarf_lineno_cleanup(Dwarf_LineInfo li) 438 { 439 Dwarf_LineFile lf, tlf; 440 Dwarf_Line ln, tln; 441 442 if (li == NULL) 443 return; 444 STAILQ_FOREACH_SAFE(lf, &li->li_lflist, lf_next, tlf) { 445 STAILQ_REMOVE(&li->li_lflist, lf, 446 _Dwarf_LineFile, lf_next); 447 if (lf->lf_fullpath) 448 free(lf->lf_fullpath); 449 free(lf); 450 } 451 STAILQ_FOREACH_SAFE(ln, &li->li_lnlist, ln_next, tln) { 452 STAILQ_REMOVE(&li->li_lnlist, ln, _Dwarf_Line, 453 ln_next); 454 free(ln); 455 } 456 if (li->li_oplen) 457 free(li->li_oplen); 458 if (li->li_incdirs) 459 free(li->li_incdirs); 460 if (li->li_lnarray) 461 free(li->li_lnarray); 462 if (li->li_lfnarray) 463 free(li->li_lfnarray); 464 free(li); 465 } 466 467 static int 468 _dwarf_lineno_gen_program(Dwarf_P_Debug dbg, Dwarf_P_Section ds, 469 Dwarf_Rel_Section drs, Dwarf_Error * error) 470 { 471 Dwarf_LineInfo li; 472 Dwarf_Line ln; 473 Dwarf_Unsigned address, file, line, spc; 474 Dwarf_Unsigned addr0, maddr; 475 Dwarf_Signed line0, column; 476 int is_stmt, basic_block; 477 int need_copy; 478 int ret; 479 480 #define RESET_REGISTERS \ 481 do { \ 482 address = 0; \ 483 file = 1; \ 484 line = 1; \ 485 column = 0; \ 486 is_stmt = li->li_defstmt; \ 487 basic_block = 0; \ 488 } while(0) 489 490 li = dbg->dbgp_lineinfo; 491 maddr = (255 - li->li_opbase) / li->li_lrange; 492 493 RESET_REGISTERS; 494 495 STAILQ_FOREACH(ln, &li->li_lnlist, ln_next) { 496 if (ln->ln_symndx > 0) { 497 /* 498 * Generate DW_LNE_set_address extended op. 499 */ 500 RCHECK(WRITE_VALUE(0, 1)); 501 RCHECK(WRITE_ULEB128(dbg->dbg_pointer_size + 1)); 502 RCHECK(WRITE_VALUE(DW_LNE_set_address, 1)); 503 RCHECK(_dwarf_reloc_entry_add(dbg, drs, ds, 504 dwarf_drt_data_reloc, dbg->dbg_pointer_size, 505 ds->ds_size, ln->ln_symndx, ln->ln_addr, 506 NULL, error)); 507 address = ln->ln_addr; 508 continue; 509 } else if (ln->ln_endseq) { 510 addr0 = (ln->ln_addr - address) / li->li_minlen; 511 if (addr0 != 0) { 512 RCHECK(WRITE_VALUE(DW_LNS_advance_pc, 1)); 513 RCHECK(WRITE_ULEB128(addr0)); 514 } 515 516 /* 517 * Generate DW_LNE_end_sequence. 518 */ 519 RCHECK(WRITE_VALUE(0, 1)); 520 RCHECK(WRITE_ULEB128(1)); 521 RCHECK(WRITE_VALUE(DW_LNE_end_sequence, 1)); 522 RESET_REGISTERS; 523 continue; 524 } 525 526 /* 527 * Generate standard opcodes for file, column, is_stmt or 528 * basic_block changes. 529 */ 530 if (ln->ln_fileno != file) { 531 RCHECK(WRITE_VALUE(DW_LNS_set_file, 1)); 532 RCHECK(WRITE_ULEB128(ln->ln_fileno)); 533 file = ln->ln_fileno; 534 } 535 if (ln->ln_column != column) { 536 RCHECK(WRITE_VALUE(DW_LNS_set_column, 1)); 537 RCHECK(WRITE_ULEB128(ln->ln_column)); 538 column = ln->ln_column; 539 } 540 if (ln->ln_stmt != is_stmt) { 541 RCHECK(WRITE_VALUE(DW_LNS_negate_stmt, 1)); 542 is_stmt = ln->ln_stmt; 543 } 544 if (ln->ln_bblock && !basic_block) { 545 RCHECK(WRITE_VALUE(DW_LNS_set_basic_block, 1)); 546 basic_block = 1; 547 } 548 549 /* 550 * Calculate address and line number change. 551 */ 552 addr0 = (ln->ln_addr - address) / li->li_minlen; 553 line0 = ln->ln_lineno - line; 554 555 if (addr0 == 0 && line0 == 0) 556 continue; 557 558 /* 559 * Check if line delta is with the range and if the special 560 * opcode can be used. 561 */ 562 assert(li->li_lbase <= 0); 563 if (line0 >= li->li_lbase && 564 line0 <= li->li_lbase + li->li_lrange - 1) { 565 spc = (line0 - li->li_lbase) + 566 (li->li_lrange * addr0) + li->li_opbase; 567 if (spc <= 255) { 568 RCHECK(WRITE_VALUE(spc, 1)); 569 basic_block = 0; 570 goto next_line; 571 } 572 } 573 574 /* Generate DW_LNS_advance_line for line number change. */ 575 if (line0 != 0) { 576 RCHECK(WRITE_VALUE(DW_LNS_advance_line, 1)); 577 RCHECK(WRITE_SLEB128(line0)); 578 line0 = 0; 579 need_copy = 1; 580 } else 581 need_copy = basic_block; 582 583 if (addr0 != 0) { 584 /* See if it can be handled by DW_LNS_const_add_pc. */ 585 spc = (line0 - li->li_lbase) + 586 (li->li_lrange * (addr0 - maddr)) + li->li_opbase; 587 if (addr0 >= maddr && spc <= 255) { 588 RCHECK(WRITE_VALUE(DW_LNS_const_add_pc, 1)); 589 RCHECK(WRITE_VALUE(spc, 1)); 590 } else { 591 /* Otherwise we use DW_LNS_advance_pc. */ 592 RCHECK(WRITE_VALUE(DW_LNS_advance_pc, 1)); 593 RCHECK(WRITE_ULEB128(addr0)); 594 } 595 } 596 597 if (need_copy) { 598 RCHECK(WRITE_VALUE(DW_LNS_copy, 1)); 599 basic_block = 0; 600 } 601 602 next_line: 603 address = ln->ln_addr; 604 line = ln->ln_lineno; 605 } 606 607 return (DW_DLE_NONE); 608 609 gen_fail: 610 return (ret); 611 612 #undef RESET_REGISTERS 613 } 614 615 static uint8_t 616 _dwarf_get_minlen(Dwarf_P_Debug dbg) 617 { 618 619 assert(dbg != NULL); 620 621 switch (dbg->dbgp_isa) { 622 case DW_ISA_ARM: 623 return (2); 624 case DW_ISA_X86: 625 case DW_ISA_X86_64: 626 return (1); 627 default: 628 return (4); 629 } 630 } 631 632 static uint8_t oplen[] = {0, 1, 1, 1, 1, 0, 0, 0, 1}; 633 634 int 635 _dwarf_lineno_gen(Dwarf_P_Debug dbg, Dwarf_Error *error) 636 { 637 Dwarf_LineInfo li; 638 Dwarf_LineFile lf; 639 Dwarf_P_Section ds; 640 Dwarf_Rel_Section drs; 641 Dwarf_Unsigned offset; 642 int i, ret; 643 644 assert(dbg != NULL && dbg->dbgp_lineinfo != NULL); 645 646 li = dbg->dbgp_lineinfo; 647 if (STAILQ_EMPTY(&li->li_lnlist)) 648 return (DW_DLE_NONE); 649 650 li->li_length = 0; 651 li->li_version = 2; 652 li->li_hdrlen = 0; 653 li->li_minlen = _dwarf_get_minlen(dbg); 654 li->li_defstmt = 1; 655 li->li_lbase = -5; 656 li->li_lrange = 14; 657 li->li_opbase = 10; 658 659 /* Create .debug_line section. */ 660 if ((ret = _dwarf_section_init(dbg, &ds, ".debug_line", 0, error)) != 661 DW_DLE_NONE) 662 return (ret); 663 664 /* Create relocation section for .debug_line */ 665 if ((ret = _dwarf_reloc_section_init(dbg, &drs, ds, error)) != 666 DW_DLE_NONE) 667 goto gen_fail1; 668 669 /* Length placeholder. (We only use 32-bit DWARF format) */ 670 RCHECK(WRITE_VALUE(0, 4)); 671 672 /* Write line number dwarf version. (DWARF2) */ 673 RCHECK(WRITE_VALUE(li->li_version, 2)); 674 675 /* Header length placeholder. */ 676 offset = ds->ds_size; 677 RCHECK(WRITE_VALUE(li->li_hdrlen, 4)); 678 679 /* Write minimum instruction length. */ 680 RCHECK(WRITE_VALUE(li->li_minlen, 1)); 681 682 /* 683 * Write initial value for is_stmt. XXX Which default value we 684 * should use? 685 */ 686 RCHECK(WRITE_VALUE(li->li_defstmt, 1)); 687 688 /* 689 * Write line_base and line_range. FIXME These value needs to be 690 * fine tuned. 691 */ 692 RCHECK(WRITE_VALUE(li->li_lbase, 1)); 693 RCHECK(WRITE_VALUE(li->li_lrange, 1)); 694 695 /* Write opcode_base. (DWARF2) */ 696 RCHECK(WRITE_VALUE(li->li_opbase, 1)); 697 698 /* Write standard op length array. */ 699 RCHECK(WRITE_BLOCK(oplen, sizeof(oplen) / sizeof(oplen[0]))); 700 701 /* Write the list of include directories. */ 702 for (i = 0; (Dwarf_Unsigned) i < li->li_inclen; i++) 703 RCHECK(WRITE_STRING(li->li_incdirs[i])); 704 RCHECK(WRITE_VALUE(0, 1)); 705 706 /* Write the list of filenames. */ 707 STAILQ_FOREACH(lf, &li->li_lflist, lf_next) { 708 RCHECK(WRITE_STRING(lf->lf_fname)); 709 RCHECK(WRITE_ULEB128(lf->lf_dirndx)); 710 RCHECK(WRITE_ULEB128(lf->lf_mtime)); 711 RCHECK(WRITE_ULEB128(lf->lf_size)); 712 } 713 RCHECK(WRITE_VALUE(0, 1)); 714 715 /* Fill in the header length. */ 716 li->li_hdrlen = ds->ds_size - offset - 4; 717 dbg->write(ds->ds_data, &offset, li->li_hdrlen, 4); 718 719 /* Generate the line number program. */ 720 RCHECK(_dwarf_lineno_gen_program(dbg, ds, drs, error)); 721 722 /* Fill in the length of this line info. */ 723 li->li_length = ds->ds_size - 4; 724 offset = 0; 725 dbg->write(ds->ds_data, &offset, li->li_length, 4); 726 727 /* Notify the creation of .debug_line ELF section. */ 728 RCHECK(_dwarf_section_callback(dbg, ds, SHT_PROGBITS, 0, 0, 0, error)); 729 730 /* Finalize relocation section for .debug_line. */ 731 RCHECK(_dwarf_reloc_section_finalize(dbg, drs, error)); 732 733 return (DW_DLE_NONE); 734 735 gen_fail: 736 _dwarf_reloc_section_free(dbg, &drs); 737 738 gen_fail1: 739 _dwarf_section_free(dbg, &ds); 740 741 return (ret); 742 } 743 744 void 745 _dwarf_lineno_pro_cleanup(Dwarf_P_Debug dbg) 746 { 747 Dwarf_LineInfo li; 748 Dwarf_LineFile lf, tlf; 749 Dwarf_Line ln, tln; 750 int i; 751 752 assert(dbg != NULL && dbg->dbg_mode == DW_DLC_WRITE); 753 if (dbg->dbgp_lineinfo == NULL) 754 return; 755 756 li = dbg->dbgp_lineinfo; 757 STAILQ_FOREACH_SAFE(lf, &li->li_lflist, lf_next, tlf) { 758 STAILQ_REMOVE(&li->li_lflist, lf, _Dwarf_LineFile, 759 lf_next); 760 if (lf->lf_fname) 761 free(lf->lf_fname); 762 free(lf); 763 } 764 STAILQ_FOREACH_SAFE(ln, &li->li_lnlist, ln_next, tln) { 765 STAILQ_REMOVE(&li->li_lnlist, ln, _Dwarf_Line, ln_next); 766 free(ln); 767 } 768 if (li->li_incdirs) { 769 for (i = 0; (Dwarf_Unsigned) i < li->li_inclen; i++) 770 free(li->li_incdirs[i]); 771 free(li->li_incdirs); 772 } 773 free(li); 774 dbg->dbgp_lineinfo = NULL; 775 } 776