1 /* Generic ECOFF (Extended-COFF) routines. 2 Copyright (C) 1990-2024 Free Software Foundation, Inc. 3 Original version by Per Bothner. 4 Full support added by Ian Lance Taylor, 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 3 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, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "bfdlink.h" 26 #include "libbfd.h" 27 #include "ecoff-bfd.h" 28 #include "aout/ar.h" 29 #include "aout/stab_gnu.h" 30 31 /* FIXME: We need the definitions of N_SET[ADTB], but aout64.h defines 32 some other stuff which we don't want and which conflicts with stuff 33 we do want. */ 34 #include "libaout.h" 35 #include "aout/aout64.h" 36 #undef N_ABS 37 #undef exec_hdr 38 #undef obj_sym_filepos 39 40 #include "coff/internal.h" 41 #include "coff/sym.h" 42 #include "coff/symconst.h" 43 #include "coff/ecoff.h" 44 #include "libcoff.h" 45 #include "libecoff.h" 46 #include "libiberty.h" 47 48 #define streq(a, b) (strcmp ((a), (b)) == 0) 49 50 51 /* This stuff is somewhat copied from coffcode.h. */ 52 static asection bfd_debug_section = 53 BFD_FAKE_SECTION (bfd_debug_section, NULL, "*DEBUG*", 0, 0); 54 55 /* Create an ECOFF object. */ 56 57 bool 58 _bfd_ecoff_mkobject (bfd *abfd) 59 { 60 size_t amt = sizeof (ecoff_data_type); 61 62 abfd->tdata.ecoff_obj_data = (struct ecoff_tdata *) bfd_zalloc (abfd, amt); 63 if (abfd->tdata.ecoff_obj_data == NULL) 64 return false; 65 66 return true; 67 } 68 69 /* This is a hook called by coff_real_object_p to create any backend 70 specific information. */ 71 72 void * 73 _bfd_ecoff_mkobject_hook (bfd *abfd, void * filehdr, void * aouthdr) 74 { 75 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; 76 struct internal_aouthdr *internal_a = (struct internal_aouthdr *) aouthdr; 77 ecoff_data_type *ecoff; 78 79 if (! _bfd_ecoff_mkobject (abfd)) 80 return NULL; 81 82 ecoff = ecoff_data (abfd); 83 ecoff->gp_size = 8; 84 ecoff->sym_filepos = internal_f->f_symptr; 85 86 if (internal_a != NULL) 87 { 88 int i; 89 90 ecoff->text_start = internal_a->text_start; 91 ecoff->text_end = internal_a->text_start + internal_a->tsize; 92 ecoff->gp = internal_a->gp_value; 93 ecoff->gprmask = internal_a->gprmask; 94 for (i = 0; i < 4; i++) 95 ecoff->cprmask[i] = internal_a->cprmask[i]; 96 ecoff->fprmask = internal_a->fprmask; 97 if (internal_a->magic == ECOFF_AOUT_ZMAGIC) 98 abfd->flags |= D_PAGED; 99 else 100 abfd->flags &=~ D_PAGED; 101 } 102 103 /* It turns out that no special action is required by the MIPS or 104 Alpha ECOFF backends. They have different information in the 105 a.out header, but we just copy it all (e.g., gprmask, cprmask and 106 fprmask) and let the swapping routines ensure that only relevant 107 information is written out. */ 108 109 return (void *) ecoff; 110 } 111 112 bool 113 _bfd_ecoff_bfd_free_cached_info (bfd *abfd) 114 { 115 struct ecoff_tdata *tdata; 116 117 if ((bfd_get_format (abfd) == bfd_object 118 || bfd_get_format (abfd) == bfd_core) 119 && (tdata = ecoff_data (abfd)) != NULL) 120 { 121 while (tdata->mips_refhi_list != NULL) 122 { 123 struct mips_hi *ref = tdata->mips_refhi_list; 124 tdata->mips_refhi_list = ref->next; 125 free (ref); 126 } 127 _bfd_ecoff_free_ecoff_debug_info (&tdata->debug_info); 128 } 129 return _bfd_generic_bfd_free_cached_info (abfd); 130 } 131 132 /* Initialize a new section. */ 133 134 bool 135 _bfd_ecoff_new_section_hook (bfd *abfd, asection *section) 136 { 137 unsigned int i; 138 static struct 139 { 140 const char * name; 141 flagword flags; 142 } 143 section_flags [] = 144 { 145 { _TEXT, SEC_ALLOC | SEC_CODE | SEC_LOAD }, 146 { _INIT, SEC_ALLOC | SEC_CODE | SEC_LOAD }, 147 { _FINI, SEC_ALLOC | SEC_CODE | SEC_LOAD }, 148 { _DATA, SEC_ALLOC | SEC_DATA | SEC_LOAD }, 149 { _SDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_SMALL_DATA }, 150 { _RDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY}, 151 { _LIT8, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY | SEC_SMALL_DATA}, 152 { _LIT4, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY | SEC_SMALL_DATA}, 153 { _RCONST, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY}, 154 { _PDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY}, 155 { _BSS, SEC_ALLOC}, 156 { _SBSS, SEC_ALLOC | SEC_SMALL_DATA}, 157 /* An Irix 4 shared libary. */ 158 { _LIB, SEC_COFF_SHARED_LIBRARY} 159 }; 160 161 section->alignment_power = 4; 162 163 for (i = 0; i < ARRAY_SIZE (section_flags); i++) 164 if (streq (section->name, section_flags[i].name)) 165 { 166 section->flags |= section_flags[i].flags; 167 break; 168 } 169 170 171 /* Probably any other section name is SEC_NEVER_LOAD, but I'm 172 uncertain about .init on some systems and I don't know how shared 173 libraries work. */ 174 175 return _bfd_generic_new_section_hook (abfd, section); 176 } 177 178 void 179 _bfd_ecoff_set_alignment_hook (bfd *abfd ATTRIBUTE_UNUSED, 180 asection *section ATTRIBUTE_UNUSED, 181 void *scnhdr ATTRIBUTE_UNUSED) 182 { 183 } 184 185 /* Determine the machine architecture and type. This is called from 186 the generic COFF routines. It is the inverse of ecoff_get_magic, 187 below. This could be an ECOFF backend routine, with one version 188 for each target, but there aren't all that many ECOFF targets. */ 189 190 bool 191 _bfd_ecoff_set_arch_mach_hook (bfd *abfd, void * filehdr) 192 { 193 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; 194 enum bfd_architecture arch; 195 unsigned long mach; 196 197 switch (internal_f->f_magic) 198 { 199 case MIPS_MAGIC_1: 200 case MIPS_MAGIC_LITTLE: 201 case MIPS_MAGIC_BIG: 202 arch = bfd_arch_mips; 203 mach = bfd_mach_mips3000; 204 break; 205 206 case MIPS_MAGIC_LITTLE2: 207 case MIPS_MAGIC_BIG2: 208 /* MIPS ISA level 2: the r6000. */ 209 arch = bfd_arch_mips; 210 mach = bfd_mach_mips6000; 211 break; 212 213 case MIPS_MAGIC_LITTLE3: 214 case MIPS_MAGIC_BIG3: 215 /* MIPS ISA level 3: the r4000. */ 216 arch = bfd_arch_mips; 217 mach = bfd_mach_mips4000; 218 break; 219 220 case ALPHA_MAGIC: 221 arch = bfd_arch_alpha; 222 mach = 0; 223 break; 224 225 default: 226 arch = bfd_arch_obscure; 227 mach = 0; 228 break; 229 } 230 231 return bfd_default_set_arch_mach (abfd, arch, mach); 232 } 233 234 bool 235 _bfd_ecoff_no_long_sections (bfd *abfd, int enable) 236 { 237 (void) abfd; 238 (void) enable; 239 return false; 240 } 241 242 /* Get the magic number to use based on the architecture and machine. 243 This is the inverse of _bfd_ecoff_set_arch_mach_hook, above. */ 244 245 static int 246 ecoff_get_magic (bfd *abfd) 247 { 248 int big, little; 249 250 switch (bfd_get_arch (abfd)) 251 { 252 case bfd_arch_mips: 253 switch (bfd_get_mach (abfd)) 254 { 255 default: 256 case 0: 257 case bfd_mach_mips3000: 258 big = MIPS_MAGIC_BIG; 259 little = MIPS_MAGIC_LITTLE; 260 break; 261 262 case bfd_mach_mips6000: 263 big = MIPS_MAGIC_BIG2; 264 little = MIPS_MAGIC_LITTLE2; 265 break; 266 267 case bfd_mach_mips4000: 268 big = MIPS_MAGIC_BIG3; 269 little = MIPS_MAGIC_LITTLE3; 270 break; 271 } 272 273 return bfd_big_endian (abfd) ? big : little; 274 275 case bfd_arch_alpha: 276 return ALPHA_MAGIC; 277 278 default: 279 abort (); 280 return 0; 281 } 282 } 283 284 /* Get the section s_flags to use for a section. */ 285 286 static long 287 ecoff_sec_to_styp_flags (const char *name, flagword flags) 288 { 289 unsigned int i; 290 static struct 291 { 292 const char * name; 293 long flags; 294 } 295 styp_flags [] = 296 { 297 { _TEXT, STYP_TEXT }, 298 { _DATA, STYP_DATA }, 299 { _SDATA, STYP_SDATA }, 300 { _RDATA, STYP_RDATA }, 301 { _LITA, STYP_LITA }, 302 { _LIT8, STYP_LIT8 }, 303 { _LIT4, STYP_LIT4 }, 304 { _BSS, STYP_BSS }, 305 { _SBSS, STYP_SBSS }, 306 { _INIT, STYP_ECOFF_INIT }, 307 { _FINI, STYP_ECOFF_FINI }, 308 { _PDATA, STYP_PDATA }, 309 { _XDATA, STYP_XDATA }, 310 { _LIB, STYP_ECOFF_LIB }, 311 { _GOT, STYP_GOT }, 312 { _HASH, STYP_HASH }, 313 { _DYNAMIC, STYP_DYNAMIC }, 314 { _LIBLIST, STYP_LIBLIST }, 315 { _RELDYN, STYP_RELDYN }, 316 { _CONFLIC, STYP_CONFLIC }, 317 { _DYNSTR, STYP_DYNSTR }, 318 { _DYNSYM, STYP_DYNSYM }, 319 { _RCONST, STYP_RCONST } 320 }; 321 long styp = 0; 322 323 for (i = 0; i < ARRAY_SIZE (styp_flags); i++) 324 if (streq (name, styp_flags[i].name)) 325 { 326 styp = styp_flags[i].flags; 327 break; 328 } 329 330 if (styp == 0) 331 { 332 if (streq (name, _COMMENT)) 333 { 334 styp = STYP_COMMENT; 335 flags &=~ SEC_NEVER_LOAD; 336 } 337 else if (flags & SEC_CODE) 338 styp = STYP_TEXT; 339 else if (flags & SEC_DATA) 340 styp = STYP_DATA; 341 else if (flags & SEC_READONLY) 342 styp = STYP_RDATA; 343 else if (flags & SEC_LOAD) 344 styp = STYP_REG; 345 else 346 styp = STYP_BSS; 347 } 348 349 if (flags & SEC_NEVER_LOAD) 350 styp |= STYP_NOLOAD; 351 352 return styp; 353 } 354 355 /* Get the BFD flags to use for a section. */ 356 357 bool 358 _bfd_ecoff_styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED, 359 void * hdr, 360 const char *name ATTRIBUTE_UNUSED, 361 asection *section ATTRIBUTE_UNUSED, 362 flagword * flags_ptr) 363 { 364 struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; 365 long styp_flags = internal_s->s_flags; 366 flagword sec_flags = 0; 367 368 if (styp_flags & STYP_NOLOAD) 369 sec_flags |= SEC_NEVER_LOAD; 370 371 /* For 386 COFF, at least, an unloadable text or data section is 372 actually a shared library section. */ 373 if ((styp_flags & STYP_TEXT) 374 || (styp_flags & STYP_ECOFF_INIT) 375 || (styp_flags & STYP_ECOFF_FINI) 376 || (styp_flags & STYP_DYNAMIC) 377 || (styp_flags & STYP_LIBLIST) 378 || (styp_flags & STYP_RELDYN) 379 || styp_flags == STYP_CONFLIC 380 || (styp_flags & STYP_DYNSTR) 381 || (styp_flags & STYP_DYNSYM) 382 || (styp_flags & STYP_HASH)) 383 { 384 if (sec_flags & SEC_NEVER_LOAD) 385 sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; 386 else 387 sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; 388 } 389 else if ((styp_flags & STYP_DATA) 390 || (styp_flags & STYP_RDATA) 391 || (styp_flags & STYP_SDATA) 392 || styp_flags == STYP_PDATA 393 || styp_flags == STYP_XDATA 394 || (styp_flags & STYP_GOT) 395 || styp_flags == STYP_RCONST) 396 { 397 if (sec_flags & SEC_NEVER_LOAD) 398 sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; 399 else 400 sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; 401 if ((styp_flags & STYP_RDATA) 402 || styp_flags == STYP_PDATA 403 || styp_flags == STYP_RCONST) 404 sec_flags |= SEC_READONLY; 405 if (styp_flags & STYP_SDATA) 406 sec_flags |= SEC_SMALL_DATA; 407 } 408 else if (styp_flags & STYP_SBSS) 409 sec_flags |= SEC_ALLOC | SEC_SMALL_DATA; 410 else if (styp_flags & STYP_BSS) 411 sec_flags |= SEC_ALLOC; 412 else if ((styp_flags & STYP_INFO) || styp_flags == STYP_COMMENT) 413 sec_flags |= SEC_NEVER_LOAD; 414 else if ((styp_flags & STYP_LITA) 415 || (styp_flags & STYP_LIT8) 416 || (styp_flags & STYP_LIT4)) 417 sec_flags |= SEC_DATA |SEC_SMALL_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY; 418 else if (styp_flags & STYP_ECOFF_LIB) 419 sec_flags |= SEC_COFF_SHARED_LIBRARY; 420 else 421 sec_flags |= SEC_ALLOC | SEC_LOAD; 422 423 * flags_ptr = sec_flags; 424 return true; 425 } 426 427 /* Read in the symbolic header for an ECOFF object file. */ 428 429 static bool 430 ecoff_slurp_symbolic_header (bfd *abfd) 431 { 432 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 433 bfd_size_type external_hdr_size; 434 void * raw = NULL; 435 HDRR *internal_symhdr; 436 437 /* See if we've already read it in. */ 438 if (ecoff_data (abfd)->debug_info.symbolic_header.magic == 439 backend->debug_swap.sym_magic) 440 return true; 441 442 /* See whether there is a symbolic header. */ 443 if (ecoff_data (abfd)->sym_filepos == 0) 444 { 445 abfd->symcount = 0; 446 return true; 447 } 448 449 /* At this point bfd_get_symcount (abfd) holds the number of symbols 450 as read from the file header, but on ECOFF this is always the 451 size of the symbolic information header. It would be cleaner to 452 handle this when we first read the file in coffgen.c. */ 453 external_hdr_size = backend->debug_swap.external_hdr_size; 454 if (bfd_get_symcount (abfd) != external_hdr_size) 455 { 456 bfd_set_error (bfd_error_bad_value); 457 return false; 458 } 459 460 /* Read the symbolic information header. */ 461 if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos, SEEK_SET) != 0) 462 goto error_return; 463 raw = _bfd_malloc_and_read (abfd, external_hdr_size, external_hdr_size); 464 if (raw == NULL) 465 goto error_return; 466 467 internal_symhdr = &ecoff_data (abfd)->debug_info.symbolic_header; 468 (*backend->debug_swap.swap_hdr_in) (abfd, raw, internal_symhdr); 469 470 if (internal_symhdr->magic != backend->debug_swap.sym_magic) 471 { 472 bfd_set_error (bfd_error_bad_value); 473 goto error_return; 474 } 475 476 #define FIX(start, count) \ 477 if (internal_symhdr->start == 0) \ 478 internal_symhdr->count = 0; 479 480 FIX (cbLineOffset, cbLine); 481 FIX (cbDnOffset, idnMax); 482 FIX (cbPdOffset, ipdMax); 483 FIX (cbSymOffset, isymMax); 484 FIX (cbOptOffset, ioptMax); 485 FIX (cbAuxOffset, iauxMax); 486 FIX (cbSsOffset, issMax); 487 FIX (cbSsExtOffset, issExtMax); 488 FIX (cbFdOffset, ifdMax); 489 FIX (cbRfdOffset, crfd); 490 FIX (cbExtOffset, iextMax); 491 #undef FIX 492 493 /* Now we can get the correct number of symbols. */ 494 abfd->symcount = internal_symhdr->isymMax + internal_symhdr->iextMax; 495 496 free (raw); 497 return true; 498 error_return: 499 free (raw); 500 return false; 501 } 502 503 /* Read in and swap the important symbolic information for an ECOFF 504 object file. This is called by gdb via the read_debug_info entry 505 point in the backend structure. */ 506 507 bool 508 _bfd_ecoff_slurp_symbolic_info (bfd *abfd, 509 asection *ignore ATTRIBUTE_UNUSED, 510 struct ecoff_debug_info *debug) 511 { 512 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 513 HDRR *internal_symhdr; 514 bfd_size_type raw_base; 515 bfd_size_type raw_size; 516 void * raw; 517 bfd_size_type external_fdr_size; 518 char *fraw_src; 519 char *fraw_end; 520 struct fdr *fdr_ptr; 521 bfd_size_type raw_end; 522 bfd_size_type cb_end; 523 file_ptr pos; 524 size_t amt; 525 526 BFD_ASSERT (debug == &ecoff_data (abfd)->debug_info); 527 528 /* Check whether we've already gotten it, and whether there's any to 529 get. */ 530 if (debug->alloc_syments) 531 return true; 532 if (ecoff_data (abfd)->sym_filepos == 0) 533 { 534 abfd->symcount = 0; 535 return true; 536 } 537 538 if (! ecoff_slurp_symbolic_header (abfd)) 539 return false; 540 541 internal_symhdr = &debug->symbolic_header; 542 543 /* Read all the symbolic information at once. */ 544 raw_base = (ecoff_data (abfd)->sym_filepos 545 + backend->debug_swap.external_hdr_size); 546 547 /* Alpha ecoff makes the determination of raw_size difficult. It has 548 an undocumented debug data section between the symhdr and the first 549 documented section. And the ordering of the sections varies between 550 statically and dynamically linked executables. 551 If bfd supports SEEK_END someday, this code could be simplified. */ 552 raw_end = raw_base; 553 554 #define UPDATE_RAW_END(start, count, size) \ 555 do \ 556 if (internal_symhdr->count != 0) \ 557 { \ 558 if (internal_symhdr->start < raw_base) \ 559 goto err; \ 560 if (_bfd_mul_overflow ((unsigned long) internal_symhdr->count, \ 561 (size), &amt)) \ 562 goto err; \ 563 cb_end = internal_symhdr->start + amt; \ 564 if (cb_end < internal_symhdr->start) \ 565 goto err; \ 566 if (cb_end > raw_end) \ 567 raw_end = cb_end; \ 568 } \ 569 while (0) 570 571 UPDATE_RAW_END (cbLineOffset, cbLine, sizeof (unsigned char)); 572 UPDATE_RAW_END (cbDnOffset, idnMax, backend->debug_swap.external_dnr_size); 573 UPDATE_RAW_END (cbPdOffset, ipdMax, backend->debug_swap.external_pdr_size); 574 UPDATE_RAW_END (cbSymOffset, isymMax, backend->debug_swap.external_sym_size); 575 /* eraxxon@alumni.rice.edu: ioptMax refers to the size of the 576 optimization symtab, not the number of entries. */ 577 UPDATE_RAW_END (cbOptOffset, ioptMax, sizeof (char)); 578 UPDATE_RAW_END (cbAuxOffset, iauxMax, sizeof (union aux_ext)); 579 UPDATE_RAW_END (cbSsOffset, issMax, sizeof (char)); 580 UPDATE_RAW_END (cbSsExtOffset, issExtMax, sizeof (char)); 581 UPDATE_RAW_END (cbFdOffset, ifdMax, backend->debug_swap.external_fdr_size); 582 UPDATE_RAW_END (cbRfdOffset, crfd, backend->debug_swap.external_rfd_size); 583 UPDATE_RAW_END (cbExtOffset, iextMax, backend->debug_swap.external_ext_size); 584 585 #undef UPDATE_RAW_END 586 587 raw_size = raw_end - raw_base; 588 if (raw_size == 0) 589 { 590 ecoff_data (abfd)->sym_filepos = 0; 591 return true; 592 } 593 pos = ecoff_data (abfd)->sym_filepos; 594 pos += backend->debug_swap.external_hdr_size; 595 if (bfd_seek (abfd, pos, SEEK_SET) != 0) 596 return false; 597 raw = _bfd_alloc_and_read (abfd, raw_size, raw_size); 598 if (raw == NULL) 599 return false; 600 601 debug->alloc_syments = true; 602 603 /* Get pointers for the numeric offsets in the HDRR structure. */ 604 #define FIX(start, count, ptr, type) \ 605 if (internal_symhdr->count == 0) \ 606 debug->ptr = NULL; \ 607 else \ 608 debug->ptr = (type) ((char *) raw \ 609 + (internal_symhdr->start - raw_base)) 610 611 FIX (cbLineOffset, cbLine, line, unsigned char *); 612 FIX (cbDnOffset, idnMax, external_dnr, void *); 613 FIX (cbPdOffset, ipdMax, external_pdr, void *); 614 FIX (cbSymOffset, isymMax, external_sym, void *); 615 FIX (cbOptOffset, ioptMax, external_opt, void *); 616 FIX (cbAuxOffset, iauxMax, external_aux, union aux_ext *); 617 FIX (cbSsOffset, issMax, ss, char *); 618 FIX (cbSsExtOffset, issExtMax, ssext, char *); 619 FIX (cbFdOffset, ifdMax, external_fdr, void *); 620 FIX (cbRfdOffset, crfd, external_rfd, void *); 621 FIX (cbExtOffset, iextMax, external_ext, void *); 622 #undef FIX 623 624 /* Ensure string sections are zero terminated. */ 625 if (debug->ss) 626 debug->ss[internal_symhdr->issMax - 1] = 0; 627 if (debug->ssext) 628 debug->ssext[internal_symhdr->issExtMax - 1] = 0; 629 630 /* I don't want to always swap all the data, because it will just 631 waste time and most programs will never look at it. The only 632 time the linker needs most of the debugging information swapped 633 is when linking big-endian and little-endian MIPS object files 634 together, which is not a common occurrence. 635 636 We need to look at the fdr to deal with a lot of information in 637 the symbols, so we swap them here. */ 638 if (_bfd_mul_overflow ((unsigned long) internal_symhdr->ifdMax, 639 sizeof (struct fdr), &amt)) 640 { 641 err: 642 bfd_set_error (bfd_error_file_too_big); 643 return false; 644 } 645 debug->fdr = (FDR *) bfd_alloc (abfd, amt); 646 if (debug->fdr == NULL) 647 return false; 648 external_fdr_size = backend->debug_swap.external_fdr_size; 649 fdr_ptr = debug->fdr; 650 fraw_src = (char *) debug->external_fdr; 651 /* PR 17512: file: 3372-1243-0.004. */ 652 if (fraw_src == NULL && internal_symhdr->ifdMax > 0) 653 return false; 654 fraw_end = fraw_src + internal_symhdr->ifdMax * external_fdr_size; 655 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) 656 (*backend->debug_swap.swap_fdr_in) (abfd, (void *) fraw_src, fdr_ptr); 657 658 return true; 659 } 660 661 /* ECOFF symbol table routines. The ECOFF symbol table is described 662 in gcc/mips-tfile.c. */ 663 664 /* ECOFF uses two common sections. One is the usual one, and the 665 other is for small objects. All the small objects are kept 666 together, and then referenced via the gp pointer, which yields 667 faster assembler code. This is what we use for the small common 668 section. */ 669 static asection ecoff_scom_section; 670 static const asymbol ecoff_scom_symbol = 671 GLOBAL_SYM_INIT (SCOMMON, &ecoff_scom_section); 672 static asection ecoff_scom_section = 673 BFD_FAKE_SECTION (ecoff_scom_section, &ecoff_scom_symbol, 674 SCOMMON, 0, SEC_IS_COMMON | SEC_SMALL_DATA); 675 676 /* Create an empty symbol. */ 677 678 asymbol * 679 _bfd_ecoff_make_empty_symbol (bfd *abfd) 680 { 681 ecoff_symbol_type *new_symbol; 682 size_t amt = sizeof (ecoff_symbol_type); 683 684 new_symbol = (ecoff_symbol_type *) bfd_zalloc (abfd, amt); 685 if (new_symbol == NULL) 686 return NULL; 687 new_symbol->symbol.section = NULL; 688 new_symbol->fdr = NULL; 689 new_symbol->local = false; 690 new_symbol->native = NULL; 691 new_symbol->symbol.the_bfd = abfd; 692 return &new_symbol->symbol; 693 } 694 695 /* Set the BFD flags and section for an ECOFF symbol. */ 696 697 static bool 698 ecoff_set_symbol_info (bfd *abfd, 699 SYMR *ecoff_sym, 700 asymbol *asym, 701 int ext, 702 int weak) 703 { 704 asym->the_bfd = abfd; 705 asym->value = ecoff_sym->value; 706 asym->section = &bfd_debug_section; 707 asym->udata.i = 0; 708 709 /* Most symbol types are just for debugging. */ 710 switch (ecoff_sym->st) 711 { 712 case stGlobal: 713 case stStatic: 714 case stLabel: 715 case stProc: 716 case stStaticProc: 717 break; 718 case stNil: 719 if (ECOFF_IS_STAB (ecoff_sym)) 720 { 721 asym->flags = BSF_DEBUGGING; 722 return true; 723 } 724 break; 725 default: 726 asym->flags = BSF_DEBUGGING; 727 return true; 728 } 729 730 if (weak) 731 asym->flags = BSF_EXPORT | BSF_WEAK; 732 else if (ext) 733 asym->flags = BSF_EXPORT | BSF_GLOBAL; 734 else 735 { 736 asym->flags = BSF_LOCAL; 737 /* Normally, a local stProc symbol will have a corresponding 738 external symbol. We mark the local symbol as a debugging 739 symbol, in order to prevent nm from printing both out. 740 Similarly, we mark stLabel and stabs symbols as debugging 741 symbols. In both cases, we do want to set the value 742 correctly based on the symbol class. */ 743 if (ecoff_sym->st == stProc 744 || ecoff_sym->st == stLabel 745 || ECOFF_IS_STAB (ecoff_sym)) 746 asym->flags |= BSF_DEBUGGING; 747 } 748 749 if (ecoff_sym->st == stProc || ecoff_sym->st == stStaticProc) 750 asym->flags |= BSF_FUNCTION; 751 752 switch (ecoff_sym->sc) 753 { 754 case scNil: 755 /* Used for compiler generated labels. Leave them in the 756 debugging section, and mark them as local. If BSF_DEBUGGING 757 is set, then nm does not display them for some reason. If no 758 flags are set then the linker whines about them. */ 759 asym->flags = BSF_LOCAL; 760 break; 761 case scText: 762 asym->section = bfd_make_section_old_way (abfd, _TEXT); 763 asym->value -= asym->section->vma; 764 break; 765 case scData: 766 asym->section = bfd_make_section_old_way (abfd, _DATA); 767 asym->value -= asym->section->vma; 768 break; 769 case scBss: 770 asym->section = bfd_make_section_old_way (abfd, _BSS); 771 asym->value -= asym->section->vma; 772 break; 773 case scRegister: 774 asym->flags = BSF_DEBUGGING; 775 break; 776 case scAbs: 777 asym->section = bfd_abs_section_ptr; 778 break; 779 case scUndefined: 780 asym->section = bfd_und_section_ptr; 781 asym->flags = 0; 782 asym->value = 0; 783 break; 784 case scCdbLocal: 785 case scBits: 786 case scCdbSystem: 787 case scRegImage: 788 case scInfo: 789 case scUserStruct: 790 asym->flags = BSF_DEBUGGING; 791 break; 792 case scSData: 793 asym->section = bfd_make_section_old_way (abfd, ".sdata"); 794 asym->value -= asym->section->vma; 795 break; 796 case scSBss: 797 asym->section = bfd_make_section_old_way (abfd, ".sbss"); 798 asym->value -= asym->section->vma; 799 break; 800 case scRData: 801 asym->section = bfd_make_section_old_way (abfd, ".rdata"); 802 asym->value -= asym->section->vma; 803 break; 804 case scVar: 805 asym->flags = BSF_DEBUGGING; 806 break; 807 case scCommon: 808 if (asym->value > ecoff_data (abfd)->gp_size) 809 { 810 asym->section = bfd_com_section_ptr; 811 asym->flags = 0; 812 break; 813 } 814 /* Fall through. */ 815 case scSCommon: 816 asym->section = &ecoff_scom_section; 817 asym->flags = 0; 818 break; 819 case scVarRegister: 820 case scVariant: 821 asym->flags = BSF_DEBUGGING; 822 break; 823 case scSUndefined: 824 asym->section = bfd_und_section_ptr; 825 asym->flags = 0; 826 asym->value = 0; 827 break; 828 case scInit: 829 asym->section = bfd_make_section_old_way (abfd, ".init"); 830 asym->value -= asym->section->vma; 831 break; 832 case scBasedVar: 833 case scXData: 834 case scPData: 835 asym->flags = BSF_DEBUGGING; 836 break; 837 case scFini: 838 asym->section = bfd_make_section_old_way (abfd, ".fini"); 839 asym->value -= asym->section->vma; 840 break; 841 case scRConst: 842 asym->section = bfd_make_section_old_way (abfd, ".rconst"); 843 asym->value -= asym->section->vma; 844 break; 845 default: 846 break; 847 } 848 849 /* Look for special constructors symbols and make relocation entries 850 in a special construction section. These are produced by the 851 -fgnu-linker argument to g++. */ 852 if (ECOFF_IS_STAB (ecoff_sym)) 853 { 854 switch (ECOFF_UNMARK_STAB (ecoff_sym->index)) 855 { 856 default: 857 break; 858 859 case N_SETA: 860 case N_SETT: 861 case N_SETD: 862 case N_SETB: 863 /* Mark the symbol as a constructor. */ 864 asym->flags |= BSF_CONSTRUCTOR; 865 break; 866 } 867 } 868 return true; 869 } 870 871 /* Read an ECOFF symbol table. */ 872 873 bool 874 _bfd_ecoff_slurp_symbol_table (bfd *abfd) 875 { 876 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 877 const bfd_size_type external_ext_size 878 = backend->debug_swap.external_ext_size; 879 const bfd_size_type external_sym_size 880 = backend->debug_swap.external_sym_size; 881 void (* const swap_ext_in) (bfd *, void *, EXTR *) 882 = backend->debug_swap.swap_ext_in; 883 void (* const swap_sym_in) (bfd *, void *, SYMR *) 884 = backend->debug_swap.swap_sym_in; 885 ecoff_symbol_type *internal; 886 ecoff_symbol_type *internal_ptr; 887 char *eraw_src; 888 char *eraw_end; 889 FDR *fdr_ptr; 890 FDR *fdr_end; 891 size_t amt; 892 893 /* If we've already read in the symbol table, do nothing. */ 894 if (ecoff_data (abfd)->canonical_symbols != NULL) 895 return true; 896 897 /* Get the symbolic information. */ 898 if (! _bfd_ecoff_slurp_symbolic_info (abfd, NULL, 899 &ecoff_data (abfd)->debug_info)) 900 return false; 901 if (bfd_get_symcount (abfd) == 0) 902 return true; 903 904 if (_bfd_mul_overflow (bfd_get_symcount (abfd), 905 sizeof (ecoff_symbol_type), &amt)) 906 { 907 bfd_set_error (bfd_error_file_too_big); 908 return false; 909 } 910 internal = (ecoff_symbol_type *) bfd_alloc (abfd, amt); 911 if (internal == NULL) 912 return false; 913 914 internal_ptr = internal; 915 eraw_src = (char *) ecoff_data (abfd)->debug_info.external_ext; 916 eraw_end = (eraw_src 917 + (ecoff_data (abfd)->debug_info.symbolic_header.iextMax 918 * external_ext_size)); 919 for (; eraw_src < eraw_end; eraw_src += external_ext_size, internal_ptr++) 920 { 921 EXTR internal_esym; 922 923 (*swap_ext_in) (abfd, (void *) eraw_src, &internal_esym); 924 925 /* PR 17512: file: 3372-1000-0.004. */ 926 HDRR *symhdr = &ecoff_data (abfd)->debug_info.symbolic_header; 927 if (internal_esym.asym.iss >= symhdr->issExtMax 928 || internal_esym.asym.iss < 0) 929 { 930 bfd_set_error (bfd_error_bad_value); 931 return false; 932 } 933 934 internal_ptr->symbol.name = (ecoff_data (abfd)->debug_info.ssext 935 + internal_esym.asym.iss); 936 937 if (!ecoff_set_symbol_info (abfd, &internal_esym.asym, 938 &internal_ptr->symbol, 1, 939 internal_esym.weakext)) 940 return false; 941 942 /* The alpha uses a negative ifd field for section symbols. */ 943 /* PR 17512: file: 3372-1983-0.004. */ 944 if (internal_esym.ifd >= symhdr->ifdMax 945 || internal_esym.ifd < 0) 946 internal_ptr->fdr = NULL; 947 else 948 internal_ptr->fdr = (ecoff_data (abfd)->debug_info.fdr 949 + internal_esym.ifd); 950 internal_ptr->local = false; 951 internal_ptr->native = (void *) eraw_src; 952 } 953 954 /* The local symbols must be accessed via the fdr's, because the 955 string and aux indices are relative to the fdr information. */ 956 fdr_ptr = ecoff_data (abfd)->debug_info.fdr; 957 fdr_end = fdr_ptr + ecoff_data (abfd)->debug_info.symbolic_header.ifdMax; 958 for (; fdr_ptr < fdr_end; fdr_ptr++) 959 { 960 char *lraw_src; 961 char *lraw_end; 962 HDRR *symhdr = &ecoff_data (abfd)->debug_info.symbolic_header; 963 964 if (fdr_ptr->csym == 0) 965 continue; 966 if (fdr_ptr->isymBase < 0 967 || fdr_ptr->isymBase > symhdr->isymMax 968 || fdr_ptr->csym < 0 969 || fdr_ptr->csym > ((long) bfd_get_symcount (abfd) 970 - (internal_ptr - internal)) 971 || fdr_ptr->issBase < 0 972 || fdr_ptr->issBase > symhdr->issMax) 973 { 974 bfd_set_error (bfd_error_bad_value); 975 return false; 976 } 977 lraw_src = ((char *) ecoff_data (abfd)->debug_info.external_sym 978 + fdr_ptr->isymBase * external_sym_size); 979 lraw_end = lraw_src + fdr_ptr->csym * external_sym_size; 980 for (; 981 lraw_src < lraw_end; 982 lraw_src += external_sym_size, internal_ptr++) 983 { 984 SYMR internal_sym; 985 986 (*swap_sym_in) (abfd, (void *) lraw_src, &internal_sym); 987 988 if (internal_sym.iss >= symhdr->issMax - fdr_ptr->issBase 989 || internal_sym.iss < 0) 990 { 991 bfd_set_error (bfd_error_bad_value); 992 return false; 993 } 994 internal_ptr->symbol.name = (ecoff_data (abfd)->debug_info.ss 995 + fdr_ptr->issBase 996 + internal_sym.iss); 997 if (!ecoff_set_symbol_info (abfd, &internal_sym, 998 &internal_ptr->symbol, 0, 0)) 999 return false; 1000 internal_ptr->fdr = fdr_ptr; 1001 internal_ptr->local = true; 1002 internal_ptr->native = (void *) lraw_src; 1003 } 1004 } 1005 1006 /* PR 17512: file: 3372-3080-0.004. 1007 A discrepancy between ecoff_data (abfd)->debug_info.symbolic_header.isymMax 1008 and ecoff_data (abfd)->debug_info.symbolic_header.ifdMax can mean that 1009 we have fewer symbols than we were expecting. Allow for this by updating 1010 the symbol count and warning the user. */ 1011 if (internal_ptr - internal < (ptrdiff_t) bfd_get_symcount (abfd)) 1012 { 1013 abfd->symcount = internal_ptr - internal; 1014 _bfd_error_handler 1015 /* xgettext:c-format */ 1016 (_("%pB: warning: isymMax (%ld) is greater than ifdMax (%ld)"), 1017 abfd, ecoff_data (abfd)->debug_info.symbolic_header.isymMax, 1018 ecoff_data (abfd)->debug_info.symbolic_header.ifdMax); 1019 } 1020 1021 ecoff_data (abfd)->canonical_symbols = internal; 1022 1023 return true; 1024 } 1025 1026 /* Return the amount of space needed for the canonical symbols. */ 1027 1028 long 1029 _bfd_ecoff_get_symtab_upper_bound (bfd *abfd) 1030 { 1031 if (! _bfd_ecoff_slurp_symbolic_info (abfd, NULL, 1032 &ecoff_data (abfd)->debug_info)) 1033 return -1; 1034 1035 if (bfd_get_symcount (abfd) == 0) 1036 return 0; 1037 1038 return (bfd_get_symcount (abfd) + 1) * (sizeof (ecoff_symbol_type *)); 1039 } 1040 1041 /* Get the canonical symbols. */ 1042 1043 long 1044 _bfd_ecoff_canonicalize_symtab (bfd *abfd, asymbol **alocation) 1045 { 1046 unsigned int counter = 0; 1047 ecoff_symbol_type *symbase; 1048 ecoff_symbol_type **location = (ecoff_symbol_type **) alocation; 1049 1050 if (! _bfd_ecoff_slurp_symbol_table (abfd)) 1051 return -1; 1052 if (bfd_get_symcount (abfd) == 0) 1053 return 0; 1054 1055 symbase = ecoff_data (abfd)->canonical_symbols; 1056 while (counter < bfd_get_symcount (abfd)) 1057 { 1058 *(location++) = symbase++; 1059 counter++; 1060 } 1061 *location++ = NULL; 1062 return bfd_get_symcount (abfd); 1063 } 1064 1065 /* Turn ECOFF type information into a printable string. 1066 ecoff_emit_aggregate and ecoff_type_to_string are from 1067 gcc/mips-tdump.c, with swapping added and used_ptr removed. */ 1068 1069 /* Write aggregate information to a string. */ 1070 1071 static void 1072 ecoff_emit_aggregate (bfd *abfd, 1073 FDR *fdr, 1074 char *string, 1075 RNDXR *rndx, 1076 long isym, 1077 const char *which) 1078 { 1079 const struct ecoff_debug_swap * const debug_swap = 1080 &ecoff_backend (abfd)->debug_swap; 1081 struct ecoff_debug_info * const debug_info = &ecoff_data (abfd)->debug_info; 1082 unsigned int ifd = rndx->rfd; 1083 unsigned int indx = rndx->index; 1084 const char *name; 1085 1086 if (ifd == 0xfff) 1087 ifd = isym; 1088 1089 /* An ifd of -1 is an opaque type. An escaped index of 0 is a 1090 struct return type of a procedure compiled without -g. */ 1091 if (ifd == 0xffffffff 1092 || (rndx->rfd == 0xfff && indx == 0)) 1093 name = "<undefined>"; 1094 else if (indx == indexNil) 1095 name = "<no name>"; 1096 else 1097 { 1098 SYMR sym; 1099 1100 if (debug_info->external_rfd == NULL) 1101 fdr = debug_info->fdr + ifd; 1102 else 1103 { 1104 RFDT rfd; 1105 1106 (*debug_swap->swap_rfd_in) (abfd, 1107 ((char *) debug_info->external_rfd 1108 + ((fdr->rfdBase + ifd) 1109 * debug_swap->external_rfd_size)), 1110 &rfd); 1111 fdr = debug_info->fdr + rfd; 1112 } 1113 1114 indx += fdr->isymBase; 1115 1116 (*debug_swap->swap_sym_in) (abfd, 1117 ((char *) debug_info->external_sym 1118 + indx * debug_swap->external_sym_size), 1119 &sym); 1120 1121 name = debug_info->ss + fdr->issBase + sym.iss; 1122 } 1123 1124 sprintf (string, 1125 "%s %s { ifd = %u, index = %lu }", 1126 which, name, ifd, 1127 ((unsigned long) indx 1128 + debug_info->symbolic_header.iextMax)); 1129 } 1130 1131 /* Convert the type information to string format. */ 1132 1133 static char * 1134 ecoff_type_to_string (bfd *abfd, FDR *fdr, unsigned int indx, char *buff) 1135 { 1136 union aux_ext *aux_ptr; 1137 int bigendian; 1138 AUXU u; 1139 struct qual 1140 { 1141 unsigned int type; 1142 int low_bound; 1143 int high_bound; 1144 int stride; 1145 } qualifiers[7]; 1146 unsigned int basic_type; 1147 int i; 1148 char buffer1[1024]; 1149 char *p1 = buffer1; 1150 char *p2 = buff; 1151 RNDXR rndx; 1152 1153 aux_ptr = ecoff_data (abfd)->debug_info.external_aux + fdr->iauxBase; 1154 bigendian = fdr->fBigendian; 1155 1156 for (i = 0; i < 7; i++) 1157 { 1158 qualifiers[i].low_bound = 0; 1159 qualifiers[i].high_bound = 0; 1160 qualifiers[i].stride = 0; 1161 } 1162 1163 if (AUX_GET_ISYM (bigendian, &aux_ptr[indx]) == (bfd_vma) -1) 1164 return "-1 (no type)"; 1165 _bfd_ecoff_swap_tir_in (bigendian, &aux_ptr[indx++].a_ti, &u.ti); 1166 1167 basic_type = u.ti.bt; 1168 qualifiers[0].type = u.ti.tq0; 1169 qualifiers[1].type = u.ti.tq1; 1170 qualifiers[2].type = u.ti.tq2; 1171 qualifiers[3].type = u.ti.tq3; 1172 qualifiers[4].type = u.ti.tq4; 1173 qualifiers[5].type = u.ti.tq5; 1174 qualifiers[6].type = tqNil; 1175 1176 /* Go get the basic type. */ 1177 switch (basic_type) 1178 { 1179 case btNil: /* Undefined. */ 1180 strcpy (p1, "nil"); 1181 break; 1182 1183 case btAdr: /* Address - integer same size as pointer. */ 1184 strcpy (p1, "address"); 1185 break; 1186 1187 case btChar: /* Character. */ 1188 strcpy (p1, "char"); 1189 break; 1190 1191 case btUChar: /* Unsigned character. */ 1192 strcpy (p1, "unsigned char"); 1193 break; 1194 1195 case btShort: /* Short. */ 1196 strcpy (p1, "short"); 1197 break; 1198 1199 case btUShort: /* Unsigned short. */ 1200 strcpy (p1, "unsigned short"); 1201 break; 1202 1203 case btInt: /* Int. */ 1204 strcpy (p1, "int"); 1205 break; 1206 1207 case btUInt: /* Unsigned int. */ 1208 strcpy (p1, "unsigned int"); 1209 break; 1210 1211 case btLong: /* Long. */ 1212 strcpy (p1, "long"); 1213 break; 1214 1215 case btULong: /* Unsigned long. */ 1216 strcpy (p1, "unsigned long"); 1217 break; 1218 1219 case btFloat: /* Float (real). */ 1220 strcpy (p1, "float"); 1221 break; 1222 1223 case btDouble: /* Double (real). */ 1224 strcpy (p1, "double"); 1225 break; 1226 1227 /* Structures add 1-2 aux words: 1228 1st word is [ST_RFDESCAPE, offset] pointer to struct def; 1229 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */ 1230 1231 case btStruct: /* Structure (Record). */ 1232 _bfd_ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx); 1233 ecoff_emit_aggregate (abfd, fdr, p1, &rndx, 1234 (long) AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]), 1235 "struct"); 1236 indx++; /* Skip aux words. */ 1237 break; 1238 1239 /* Unions add 1-2 aux words: 1240 1st word is [ST_RFDESCAPE, offset] pointer to union def; 1241 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */ 1242 1243 case btUnion: /* Union. */ 1244 _bfd_ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx); 1245 ecoff_emit_aggregate (abfd, fdr, p1, &rndx, 1246 (long) AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]), 1247 "union"); 1248 indx++; /* Skip aux words. */ 1249 break; 1250 1251 /* Enumerations add 1-2 aux words: 1252 1st word is [ST_RFDESCAPE, offset] pointer to enum def; 1253 2nd word is file index if 1st word rfd is ST_RFDESCAPE. */ 1254 1255 case btEnum: /* Enumeration. */ 1256 _bfd_ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx); 1257 ecoff_emit_aggregate (abfd, fdr, p1, &rndx, 1258 (long) AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]), 1259 "enum"); 1260 indx++; /* Skip aux words. */ 1261 break; 1262 1263 case btTypedef: /* Defined via a typedef, isymRef points. */ 1264 strcpy (p1, "typedef"); 1265 break; 1266 1267 case btRange: /* Subrange of int. */ 1268 strcpy (p1, "subrange"); 1269 break; 1270 1271 case btSet: /* Pascal sets. */ 1272 strcpy (p1, "set"); 1273 break; 1274 1275 case btComplex: /* Fortran complex. */ 1276 strcpy (p1, "complex"); 1277 break; 1278 1279 case btDComplex: /* Fortran double complex. */ 1280 strcpy (p1, "double complex"); 1281 break; 1282 1283 case btIndirect: /* Forward or unnamed typedef. */ 1284 strcpy (p1, "forward/unamed typedef"); 1285 break; 1286 1287 case btFixedDec: /* Fixed Decimal. */ 1288 strcpy (p1, "fixed decimal"); 1289 break; 1290 1291 case btFloatDec: /* Float Decimal. */ 1292 strcpy (p1, "float decimal"); 1293 break; 1294 1295 case btString: /* Varying Length Character String. */ 1296 strcpy (p1, "string"); 1297 break; 1298 1299 case btBit: /* Aligned Bit String. */ 1300 strcpy (p1, "bit"); 1301 break; 1302 1303 case btPicture: /* Picture. */ 1304 strcpy (p1, "picture"); 1305 break; 1306 1307 case btVoid: /* Void. */ 1308 strcpy (p1, "void"); 1309 break; 1310 1311 default: 1312 sprintf (p1, _("unknown basic type %d"), (int) basic_type); 1313 break; 1314 } 1315 1316 p1 += strlen (p1); 1317 1318 /* If this is a bitfield, get the bitsize. */ 1319 if (u.ti.fBitfield) 1320 { 1321 int bitsize; 1322 1323 bitsize = AUX_GET_WIDTH (bigendian, &aux_ptr[indx++]); 1324 sprintf (p1, " : %d", bitsize); 1325 } 1326 1327 /* Deal with any qualifiers. */ 1328 if (qualifiers[0].type != tqNil) 1329 { 1330 /* Snarf up any array bounds in the correct order. Arrays 1331 store 5 successive words in the aux. table: 1332 word 0 RNDXR to type of the bounds (ie, int) 1333 word 1 Current file descriptor index 1334 word 2 low bound 1335 word 3 high bound (or -1 if []) 1336 word 4 stride size in bits. */ 1337 for (i = 0; i < 7; i++) 1338 { 1339 if (qualifiers[i].type == tqArray) 1340 { 1341 qualifiers[i].low_bound = 1342 AUX_GET_DNLOW (bigendian, &aux_ptr[indx+2]); 1343 qualifiers[i].high_bound = 1344 AUX_GET_DNHIGH (bigendian, &aux_ptr[indx+3]); 1345 qualifiers[i].stride = 1346 AUX_GET_WIDTH (bigendian, &aux_ptr[indx+4]); 1347 indx += 5; 1348 } 1349 } 1350 1351 /* Now print out the qualifiers. */ 1352 for (i = 0; i < 6; i++) 1353 { 1354 switch (qualifiers[i].type) 1355 { 1356 case tqNil: 1357 case tqMax: 1358 break; 1359 1360 case tqPtr: 1361 strcpy (p2, "ptr to "); 1362 p2 += sizeof ("ptr to ")-1; 1363 break; 1364 1365 case tqVol: 1366 strcpy (p2, "volatile "); 1367 p2 += sizeof ("volatile ")-1; 1368 break; 1369 1370 case tqFar: 1371 strcpy (p2, "far "); 1372 p2 += sizeof ("far ")-1; 1373 break; 1374 1375 case tqProc: 1376 strcpy (p2, "func. ret. "); 1377 p2 += sizeof ("func. ret. "); 1378 break; 1379 1380 case tqArray: 1381 { 1382 int first_array = i; 1383 int j; 1384 1385 /* Print array bounds reversed (ie, in the order the C 1386 programmer writes them). C is such a fun language.... */ 1387 while (i < 5 && qualifiers[i+1].type == tqArray) 1388 i++; 1389 1390 for (j = i; j >= first_array; j--) 1391 { 1392 strcpy (p2, "array ["); 1393 p2 += sizeof ("array [")-1; 1394 if (qualifiers[j].low_bound != 0) 1395 sprintf (p2, 1396 "%ld:%ld {%ld bits}", 1397 (long) qualifiers[j].low_bound, 1398 (long) qualifiers[j].high_bound, 1399 (long) qualifiers[j].stride); 1400 1401 else if (qualifiers[j].high_bound != -1) 1402 sprintf (p2, 1403 "%ld {%ld bits}", 1404 (long) (qualifiers[j].high_bound + 1), 1405 (long) (qualifiers[j].stride)); 1406 1407 else 1408 sprintf (p2, " {%ld bits}", (long) qualifiers[j].stride); 1409 1410 p2 += strlen (p2); 1411 strcpy (p2, "] of "); 1412 p2 += sizeof ("] of ")-1; 1413 } 1414 } 1415 break; 1416 } 1417 } 1418 } 1419 1420 strcpy (p2, buffer1); 1421 return buff; 1422 } 1423 1424 /* Return information about ECOFF symbol SYMBOL in RET. */ 1425 1426 void 1427 _bfd_ecoff_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, 1428 asymbol *symbol, 1429 symbol_info *ret) 1430 { 1431 bfd_symbol_info (symbol, ret); 1432 } 1433 1434 /* Return whether this is a local label. */ 1435 1436 bool 1437 _bfd_ecoff_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 1438 const char *name) 1439 { 1440 return name[0] == '$'; 1441 } 1442 1443 /* Print information about an ECOFF symbol. */ 1444 1445 void 1446 _bfd_ecoff_print_symbol (bfd *abfd, 1447 void * filep, 1448 asymbol *symbol, 1449 bfd_print_symbol_type how) 1450 { 1451 const struct ecoff_debug_swap * const debug_swap 1452 = &ecoff_backend (abfd)->debug_swap; 1453 FILE *file = (FILE *)filep; 1454 1455 switch (how) 1456 { 1457 case bfd_print_symbol_name: 1458 fprintf (file, "%s", symbol->name); 1459 break; 1460 case bfd_print_symbol_more: 1461 if (ecoffsymbol (symbol)->local) 1462 { 1463 SYMR ecoff_sym; 1464 1465 (*debug_swap->swap_sym_in) (abfd, ecoffsymbol (symbol)->native, 1466 &ecoff_sym); 1467 fprintf (file, "ecoff local "); 1468 bfd_fprintf_vma (abfd, file, ecoff_sym.value); 1469 fprintf (file, " %x %x", (unsigned) ecoff_sym.st, 1470 (unsigned) ecoff_sym.sc); 1471 } 1472 else 1473 { 1474 EXTR ecoff_ext; 1475 1476 (*debug_swap->swap_ext_in) (abfd, ecoffsymbol (symbol)->native, 1477 &ecoff_ext); 1478 fprintf (file, "ecoff extern "); 1479 bfd_fprintf_vma (abfd, file, ecoff_ext.asym.value); 1480 fprintf (file, " %x %x", (unsigned) ecoff_ext.asym.st, 1481 (unsigned) ecoff_ext.asym.sc); 1482 } 1483 break; 1484 case bfd_print_symbol_all: 1485 /* Print out the symbols in a reasonable way. */ 1486 { 1487 char type; 1488 int pos; 1489 EXTR ecoff_ext; 1490 char jmptbl; 1491 char cobol_main; 1492 char weakext; 1493 1494 if (ecoffsymbol (symbol)->local) 1495 { 1496 (*debug_swap->swap_sym_in) (abfd, ecoffsymbol (symbol)->native, 1497 &ecoff_ext.asym); 1498 type = 'l'; 1499 pos = ((((char *) ecoffsymbol (symbol)->native 1500 - (char *) ecoff_data (abfd)->debug_info.external_sym) 1501 / debug_swap->external_sym_size) 1502 + ecoff_data (abfd)->debug_info.symbolic_header.iextMax); 1503 jmptbl = ' '; 1504 cobol_main = ' '; 1505 weakext = ' '; 1506 } 1507 else 1508 { 1509 (*debug_swap->swap_ext_in) (abfd, ecoffsymbol (symbol)->native, 1510 &ecoff_ext); 1511 type = 'e'; 1512 pos = (((char *) ecoffsymbol (symbol)->native 1513 - (char *) ecoff_data (abfd)->debug_info.external_ext) 1514 / debug_swap->external_ext_size); 1515 jmptbl = ecoff_ext.jmptbl ? 'j' : ' '; 1516 cobol_main = ecoff_ext.cobol_main ? 'c' : ' '; 1517 weakext = ecoff_ext.weakext ? 'w' : ' '; 1518 } 1519 1520 fprintf (file, "[%3d] %c ", 1521 pos, type); 1522 bfd_fprintf_vma (abfd, file, ecoff_ext.asym.value); 1523 fprintf (file, " st %x sc %x indx %x %c%c%c %s", 1524 (unsigned) ecoff_ext.asym.st, 1525 (unsigned) ecoff_ext.asym.sc, 1526 (unsigned) ecoff_ext.asym.index, 1527 jmptbl, cobol_main, weakext, 1528 symbol->name); 1529 1530 if (ecoffsymbol (symbol)->fdr != NULL 1531 && ecoff_ext.asym.index != indexNil) 1532 { 1533 FDR *fdr; 1534 unsigned int indx; 1535 int bigendian; 1536 bfd_size_type sym_base; 1537 union aux_ext *aux_base; 1538 1539 fdr = ecoffsymbol (symbol)->fdr; 1540 indx = ecoff_ext.asym.index; 1541 1542 /* sym_base is used to map the fdr relative indices which 1543 appear in the file to the position number which we are 1544 using. */ 1545 sym_base = fdr->isymBase; 1546 if (ecoffsymbol (symbol)->local) 1547 sym_base += 1548 ecoff_data (abfd)->debug_info.symbolic_header.iextMax; 1549 1550 /* aux_base is the start of the aux entries for this file; 1551 asym.index is an offset from this. */ 1552 aux_base = (ecoff_data (abfd)->debug_info.external_aux 1553 + fdr->iauxBase); 1554 1555 /* The aux entries are stored in host byte order; the 1556 order is indicated by a bit in the fdr. */ 1557 bigendian = fdr->fBigendian; 1558 1559 /* This switch is basically from gcc/mips-tdump.c. */ 1560 switch (ecoff_ext.asym.st) 1561 { 1562 case stNil: 1563 case stLabel: 1564 break; 1565 1566 case stFile: 1567 case stBlock: 1568 fprintf (file, _("\n End+1 symbol: %ld"), 1569 (long) (indx + sym_base)); 1570 break; 1571 1572 case stEnd: 1573 if (ecoff_ext.asym.sc == scText 1574 || ecoff_ext.asym.sc == scInfo) 1575 fprintf (file, _("\n First symbol: %ld"), 1576 (long) (indx + sym_base)); 1577 else 1578 fprintf (file, _("\n First symbol: %ld"), 1579 ((long) 1580 (AUX_GET_ISYM (bigendian, 1581 &aux_base[ecoff_ext.asym.index]) 1582 + sym_base))); 1583 break; 1584 1585 case stProc: 1586 case stStaticProc: 1587 if (ECOFF_IS_STAB (&ecoff_ext.asym)) 1588 ; 1589 else if (ecoffsymbol (symbol)->local) 1590 { 1591 char buff[1024]; 1592 /* xgettext:c-format */ 1593 fprintf (file, _("\n End+1 symbol: %-7ld Type: %s"), 1594 ((long) 1595 (AUX_GET_ISYM (bigendian, 1596 &aux_base[ecoff_ext.asym.index]) 1597 + sym_base)), 1598 ecoff_type_to_string (abfd, fdr, indx + 1, buff)); 1599 } 1600 else 1601 fprintf (file, _("\n Local symbol: %ld"), 1602 ((long) indx 1603 + (long) sym_base 1604 + (ecoff_data (abfd) 1605 ->debug_info.symbolic_header.iextMax))); 1606 break; 1607 1608 case stStruct: 1609 fprintf (file, _("\n struct; End+1 symbol: %ld"), 1610 (long) (indx + sym_base)); 1611 break; 1612 1613 case stUnion: 1614 fprintf (file, _("\n union; End+1 symbol: %ld"), 1615 (long) (indx + sym_base)); 1616 break; 1617 1618 case stEnum: 1619 fprintf (file, _("\n enum; End+1 symbol: %ld"), 1620 (long) (indx + sym_base)); 1621 break; 1622 1623 default: 1624 if (! ECOFF_IS_STAB (&ecoff_ext.asym)) 1625 { 1626 char buff[1024]; 1627 fprintf (file, _("\n Type: %s"), 1628 ecoff_type_to_string (abfd, fdr, indx, buff)); 1629 } 1630 break; 1631 } 1632 } 1633 } 1634 break; 1635 } 1636 } 1637 1638 /* Read in the relocs for a section. */ 1639 1640 static bool 1641 ecoff_slurp_reloc_table (bfd *abfd, 1642 asection *section, 1643 asymbol **symbols) 1644 { 1645 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 1646 arelent *internal_relocs; 1647 bfd_size_type external_reloc_size; 1648 bfd_size_type amt; 1649 bfd_byte *external_relocs; 1650 arelent *rptr; 1651 unsigned int i; 1652 1653 if (section->relocation != NULL 1654 || section->reloc_count == 0 1655 || (section->flags & SEC_CONSTRUCTOR) != 0) 1656 return true; 1657 1658 if (! _bfd_ecoff_slurp_symbol_table (abfd)) 1659 return false; 1660 1661 external_reloc_size = backend->external_reloc_size; 1662 amt = external_reloc_size * section->reloc_count; 1663 if (bfd_seek (abfd, section->rel_filepos, SEEK_SET) != 0) 1664 return false; 1665 external_relocs = _bfd_malloc_and_read (abfd, amt, amt); 1666 if (external_relocs == NULL) 1667 return false; 1668 1669 amt = section->reloc_count; 1670 amt *= sizeof (arelent); 1671 internal_relocs = (arelent *) bfd_alloc (abfd, amt); 1672 if (internal_relocs == NULL) 1673 { 1674 free (external_relocs); 1675 return false; 1676 } 1677 1678 for (i = 0, rptr = internal_relocs; i < section->reloc_count; i++, rptr++) 1679 { 1680 struct internal_reloc intern; 1681 1682 (*backend->swap_reloc_in) (abfd, 1683 external_relocs + i * external_reloc_size, 1684 &intern); 1685 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 1686 rptr->addend = 0; 1687 1688 if (intern.r_extern) 1689 { 1690 /* r_symndx is an index into the external symbols. */ 1691 if (symbols != NULL 1692 && intern.r_symndx >= 0 1693 && (intern.r_symndx 1694 < (ecoff_data (abfd)->debug_info.symbolic_header.iextMax))) 1695 rptr->sym_ptr_ptr = symbols + intern.r_symndx; 1696 } 1697 else 1698 { 1699 const char *sec_name; 1700 asection *sec; 1701 1702 /* r_symndx is a section key. */ 1703 switch (intern.r_symndx) 1704 { 1705 case RELOC_SECTION_TEXT: sec_name = _TEXT; break; 1706 case RELOC_SECTION_RDATA: sec_name = _RDATA; break; 1707 case RELOC_SECTION_DATA: sec_name = _DATA; break; 1708 case RELOC_SECTION_SDATA: sec_name = _SDATA; break; 1709 case RELOC_SECTION_SBSS: sec_name = _SBSS; break; 1710 case RELOC_SECTION_BSS: sec_name = _BSS; break; 1711 case RELOC_SECTION_INIT: sec_name = _INIT; break; 1712 case RELOC_SECTION_LIT8: sec_name = _LIT8; break; 1713 case RELOC_SECTION_LIT4: sec_name = _LIT4; break; 1714 case RELOC_SECTION_XDATA: sec_name = _XDATA; break; 1715 case RELOC_SECTION_PDATA: sec_name = _PDATA; break; 1716 case RELOC_SECTION_FINI: sec_name = _FINI; break; 1717 case RELOC_SECTION_LITA: sec_name = _LITA; break; 1718 case RELOC_SECTION_RCONST: sec_name = _RCONST; break; 1719 default: 1720 sec_name = NULL; 1721 break; 1722 } 1723 1724 if (sec_name != NULL) 1725 { 1726 sec = bfd_get_section_by_name (abfd, sec_name); 1727 if (sec != NULL) 1728 { 1729 rptr->sym_ptr_ptr = sec->symbol_ptr_ptr; 1730 rptr->addend = - bfd_section_vma (sec); 1731 } 1732 } 1733 } 1734 1735 rptr->address = intern.r_vaddr - bfd_section_vma (section); 1736 1737 /* Let the backend select the howto field and do any other 1738 required processing. */ 1739 (*backend->adjust_reloc_in) (abfd, &intern, rptr); 1740 } 1741 1742 free (external_relocs); 1743 1744 section->relocation = internal_relocs; 1745 1746 return true; 1747 } 1748 1749 /* Get a canonical list of relocs. */ 1750 1751 long 1752 _bfd_ecoff_canonicalize_reloc (bfd *abfd, 1753 asection *section, 1754 arelent **relptr, 1755 asymbol **symbols) 1756 { 1757 unsigned int count; 1758 1759 if (section->flags & SEC_CONSTRUCTOR) 1760 { 1761 arelent_chain *chain; 1762 1763 /* This section has relocs made up by us, not the file, so take 1764 them out of their chain and place them into the data area 1765 provided. */ 1766 for (count = 0, chain = section->constructor_chain; 1767 count < section->reloc_count; 1768 count++, chain = chain->next) 1769 *relptr++ = &chain->relent; 1770 } 1771 else 1772 { 1773 arelent *tblptr; 1774 1775 if (! ecoff_slurp_reloc_table (abfd, section, symbols)) 1776 return -1; 1777 1778 tblptr = section->relocation; 1779 1780 for (count = 0; count < section->reloc_count; count++) 1781 *relptr++ = tblptr++; 1782 } 1783 1784 *relptr = NULL; 1785 1786 return section->reloc_count; 1787 } 1788 1789 /* Provided a BFD, a section and an offset into the section, calculate 1790 and return the name of the source file and the line nearest to the 1791 wanted location. */ 1792 1793 bool 1794 _bfd_ecoff_find_nearest_line (bfd *abfd, 1795 asymbol **symbols ATTRIBUTE_UNUSED, 1796 asection *section, 1797 bfd_vma offset, 1798 const char **filename_ptr, 1799 const char **functionname_ptr, 1800 unsigned int *retline_ptr, 1801 unsigned int *discriminator_ptr) 1802 { 1803 const struct ecoff_debug_swap * const debug_swap 1804 = &ecoff_backend (abfd)->debug_swap; 1805 struct ecoff_debug_info * const debug_info = &ecoff_data (abfd)->debug_info; 1806 struct ecoff_find_line *line_info; 1807 1808 /* Make sure we have the FDR's. */ 1809 if (! _bfd_ecoff_slurp_symbolic_info (abfd, NULL, debug_info) 1810 || bfd_get_symcount (abfd) == 0) 1811 return false; 1812 1813 if (ecoff_data (abfd)->find_line_info == NULL) 1814 { 1815 size_t amt = sizeof (struct ecoff_find_line); 1816 1817 ecoff_data (abfd)->find_line_info = 1818 (struct ecoff_find_line *) bfd_zalloc (abfd, amt); 1819 if (ecoff_data (abfd)->find_line_info == NULL) 1820 return false; 1821 } 1822 1823 if (discriminator_ptr) 1824 *discriminator_ptr = 0; 1825 line_info = ecoff_data (abfd)->find_line_info; 1826 return _bfd_ecoff_locate_line (abfd, section, offset, debug_info, 1827 debug_swap, line_info, filename_ptr, 1828 functionname_ptr, retline_ptr); 1829 } 1830 1831 /* Copy private BFD data. This is called by objcopy and strip. We 1832 use it to copy the ECOFF debugging information from one BFD to the 1833 other. It would be theoretically possible to represent the ECOFF 1834 debugging information in the symbol table. However, it would be a 1835 lot of work, and there would be little gain (gas, gdb, and ld 1836 already access the ECOFF debugging information via the 1837 ecoff_debug_info structure, and that structure would have to be 1838 retained in order to support ECOFF debugging in MIPS ELF). 1839 1840 The debugging information for the ECOFF external symbols comes from 1841 the symbol table, so this function only handles the other debugging 1842 information. */ 1843 1844 bool 1845 _bfd_ecoff_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 1846 { 1847 struct ecoff_debug_info *iinfo = &ecoff_data (ibfd)->debug_info; 1848 struct ecoff_debug_info *oinfo = &ecoff_data (obfd)->debug_info; 1849 int i; 1850 asymbol **sym_ptr_ptr; 1851 size_t c; 1852 bool local; 1853 1854 /* We only want to copy information over if both BFD's use ECOFF 1855 format. */ 1856 if (bfd_get_flavour (ibfd) != bfd_target_ecoff_flavour 1857 || bfd_get_flavour (obfd) != bfd_target_ecoff_flavour) 1858 return true; 1859 1860 /* Copy the GP value and the register masks. */ 1861 ecoff_data (obfd)->gp = ecoff_data (ibfd)->gp; 1862 ecoff_data (obfd)->gprmask = ecoff_data (ibfd)->gprmask; 1863 ecoff_data (obfd)->fprmask = ecoff_data (ibfd)->fprmask; 1864 for (i = 0; i < 3; i++) 1865 ecoff_data (obfd)->cprmask[i] = ecoff_data (ibfd)->cprmask[i]; 1866 1867 /* Copy the version stamp. */ 1868 oinfo->symbolic_header.vstamp = iinfo->symbolic_header.vstamp; 1869 1870 /* If there are no symbols, don't copy any debugging information. */ 1871 c = bfd_get_symcount (obfd); 1872 sym_ptr_ptr = bfd_get_outsymbols (obfd); 1873 if (c == 0 || sym_ptr_ptr == NULL) 1874 return true; 1875 1876 /* See if there are any local symbols. */ 1877 local = false; 1878 for (; c > 0; c--, sym_ptr_ptr++) 1879 { 1880 if (ecoffsymbol (*sym_ptr_ptr)->local) 1881 { 1882 local = true; 1883 break; 1884 } 1885 } 1886 1887 if (local) 1888 { 1889 /* There are some local symbols. We just bring over all the 1890 debugging information. FIXME: This is not quite the right 1891 thing to do. If the user has asked us to discard all 1892 debugging information, then we are probably going to wind up 1893 keeping it because there will probably be some local symbol 1894 which objcopy did not discard. We should actually break 1895 apart the debugging information and only keep that which 1896 applies to the symbols we want to keep. */ 1897 oinfo->symbolic_header.ilineMax = iinfo->symbolic_header.ilineMax; 1898 oinfo->symbolic_header.cbLine = iinfo->symbolic_header.cbLine; 1899 oinfo->line = iinfo->line; 1900 1901 oinfo->symbolic_header.idnMax = iinfo->symbolic_header.idnMax; 1902 oinfo->external_dnr = iinfo->external_dnr; 1903 1904 oinfo->symbolic_header.ipdMax = iinfo->symbolic_header.ipdMax; 1905 oinfo->external_pdr = iinfo->external_pdr; 1906 1907 oinfo->symbolic_header.isymMax = iinfo->symbolic_header.isymMax; 1908 oinfo->external_sym = iinfo->external_sym; 1909 1910 oinfo->symbolic_header.ioptMax = iinfo->symbolic_header.ioptMax; 1911 oinfo->external_opt = iinfo->external_opt; 1912 1913 oinfo->symbolic_header.iauxMax = iinfo->symbolic_header.iauxMax; 1914 oinfo->external_aux = iinfo->external_aux; 1915 1916 oinfo->symbolic_header.issMax = iinfo->symbolic_header.issMax; 1917 oinfo->ss = iinfo->ss; 1918 1919 oinfo->symbolic_header.ifdMax = iinfo->symbolic_header.ifdMax; 1920 oinfo->external_fdr = iinfo->external_fdr; 1921 1922 oinfo->symbolic_header.crfd = iinfo->symbolic_header.crfd; 1923 oinfo->external_rfd = iinfo->external_rfd; 1924 1925 /* Flag that oinfo entries should not be freed. */ 1926 oinfo->alloc_syments = true; 1927 } 1928 else 1929 { 1930 /* We are discarding all the local symbol information. Look 1931 through the external symbols and remove all references to FDR 1932 or aux information. */ 1933 c = bfd_get_symcount (obfd); 1934 sym_ptr_ptr = bfd_get_outsymbols (obfd); 1935 for (; c > 0; c--, sym_ptr_ptr++) 1936 { 1937 EXTR esym; 1938 1939 (*(ecoff_backend (obfd)->debug_swap.swap_ext_in)) 1940 (obfd, ecoffsymbol (*sym_ptr_ptr)->native, &esym); 1941 esym.ifd = ifdNil; 1942 esym.asym.index = indexNil; 1943 (*(ecoff_backend (obfd)->debug_swap.swap_ext_out)) 1944 (obfd, &esym, ecoffsymbol (*sym_ptr_ptr)->native); 1945 } 1946 } 1947 1948 return true; 1949 } 1950 1951 /* Set the architecture. The supported architecture is stored in the 1952 backend pointer. We always set the architecture anyhow, since many 1953 callers ignore the return value. */ 1954 1955 bool 1956 _bfd_ecoff_set_arch_mach (bfd *abfd, 1957 enum bfd_architecture arch, 1958 unsigned long machine) 1959 { 1960 bfd_default_set_arch_mach (abfd, arch, machine); 1961 return arch == ecoff_backend (abfd)->arch; 1962 } 1963 1964 /* Get the size of the section headers. */ 1965 1966 int 1967 _bfd_ecoff_sizeof_headers (bfd *abfd, 1968 struct bfd_link_info *info ATTRIBUTE_UNUSED) 1969 { 1970 asection *current; 1971 int c; 1972 int ret; 1973 1974 c = 0; 1975 for (current = abfd->sections; 1976 current != NULL; 1977 current = current->next) 1978 ++c; 1979 1980 ret = (bfd_coff_filhsz (abfd) 1981 + bfd_coff_aoutsz (abfd) 1982 + c * bfd_coff_scnhsz (abfd)); 1983 return (int) BFD_ALIGN (ret, 16); 1984 } 1985 1986 /* Get the contents of a section. */ 1987 1988 bool 1989 _bfd_ecoff_get_section_contents (bfd *abfd, 1990 asection *section, 1991 void * location, 1992 file_ptr offset, 1993 bfd_size_type count) 1994 { 1995 return _bfd_generic_get_section_contents (abfd, section, location, 1996 offset, count); 1997 } 1998 1999 /* Sort sections by VMA, but put SEC_ALLOC sections first. This is 2000 called via qsort. */ 2001 2002 static int 2003 ecoff_sort_hdrs (const void * arg1, const void * arg2) 2004 { 2005 const asection *hdr1 = *(const asection **) arg1; 2006 const asection *hdr2 = *(const asection **) arg2; 2007 2008 if ((hdr1->flags & SEC_ALLOC) != 0) 2009 { 2010 if ((hdr2->flags & SEC_ALLOC) == 0) 2011 return -1; 2012 } 2013 else 2014 { 2015 if ((hdr2->flags & SEC_ALLOC) != 0) 2016 return 1; 2017 } 2018 if (hdr1->vma < hdr2->vma) 2019 return -1; 2020 else if (hdr1->vma > hdr2->vma) 2021 return 1; 2022 else 2023 return 0; 2024 } 2025 2026 /* Calculate the file position for each section, and set 2027 reloc_filepos. */ 2028 2029 static bool 2030 ecoff_compute_section_file_positions (bfd *abfd) 2031 { 2032 file_ptr sofar, file_sofar; 2033 asection **sorted_hdrs; 2034 asection *current; 2035 unsigned int i; 2036 file_ptr old_sofar; 2037 bool rdata_in_text; 2038 bool first_data, first_nonalloc; 2039 const bfd_vma round = ecoff_backend (abfd)->round; 2040 bfd_size_type amt; 2041 2042 sofar = _bfd_ecoff_sizeof_headers (abfd, NULL); 2043 file_sofar = sofar; 2044 2045 /* Sort the sections by VMA. */ 2046 amt = abfd->section_count; 2047 amt *= sizeof (asection *); 2048 sorted_hdrs = (asection **) bfd_malloc (amt); 2049 if (sorted_hdrs == NULL) 2050 return false; 2051 for (current = abfd->sections, i = 0; 2052 current != NULL; 2053 current = current->next, i++) 2054 sorted_hdrs[i] = current; 2055 BFD_ASSERT (i == abfd->section_count); 2056 2057 qsort (sorted_hdrs, abfd->section_count, sizeof (asection *), 2058 ecoff_sort_hdrs); 2059 2060 /* Some versions of the OSF linker put the .rdata section in the 2061 text segment, and some do not. */ 2062 rdata_in_text = ecoff_backend (abfd)->rdata_in_text; 2063 if (rdata_in_text) 2064 { 2065 for (i = 0; i < abfd->section_count; i++) 2066 { 2067 current = sorted_hdrs[i]; 2068 if (streq (current->name, _RDATA)) 2069 break; 2070 if ((current->flags & SEC_CODE) == 0 2071 && ! streq (current->name, _PDATA) 2072 && ! streq (current->name, _RCONST)) 2073 { 2074 rdata_in_text = false; 2075 break; 2076 } 2077 } 2078 } 2079 ecoff_data (abfd)->rdata_in_text = rdata_in_text; 2080 2081 first_data = true; 2082 first_nonalloc = true; 2083 for (i = 0; i < abfd->section_count; i++) 2084 { 2085 unsigned int alignment_power; 2086 2087 current = sorted_hdrs[i]; 2088 2089 /* For the Alpha ECOFF .pdata section the lnnoptr field is 2090 supposed to indicate the number of .pdata entries that are 2091 really in the section. Each entry is 8 bytes. We store this 2092 away in line_filepos before increasing the section size. */ 2093 if (streq (current->name, _PDATA)) 2094 current->line_filepos = current->size / 8; 2095 2096 alignment_power = current->alignment_power; 2097 2098 /* On Ultrix, the data sections in an executable file must be 2099 aligned to a page boundary within the file. This does not 2100 affect the section size, though. FIXME: Does this work for 2101 other platforms? It requires some modification for the 2102 Alpha, because .rdata on the Alpha goes with the text, not 2103 the data. */ 2104 if ((abfd->flags & EXEC_P) != 0 2105 && (abfd->flags & D_PAGED) != 0 2106 && ! first_data 2107 && (current->flags & SEC_CODE) == 0 2108 && (! rdata_in_text 2109 || ! streq (current->name, _RDATA)) 2110 && ! streq (current->name, _PDATA) 2111 && ! streq (current->name, _RCONST)) 2112 { 2113 sofar = (sofar + round - 1) &~ (round - 1); 2114 file_sofar = (file_sofar + round - 1) &~ (round - 1); 2115 first_data = false; 2116 } 2117 else if (streq (current->name, _LIB)) 2118 { 2119 /* On Irix 4, the location of contents of the .lib section 2120 from a shared library section is also rounded up to a 2121 page boundary. */ 2122 2123 sofar = (sofar + round - 1) &~ (round - 1); 2124 file_sofar = (file_sofar + round - 1) &~ (round - 1); 2125 } 2126 else if (first_nonalloc 2127 && (current->flags & SEC_ALLOC) == 0 2128 && (abfd->flags & D_PAGED) != 0) 2129 { 2130 /* Skip up to the next page for an unallocated section, such 2131 as the .comment section on the Alpha. This leaves room 2132 for the .bss section. */ 2133 first_nonalloc = false; 2134 sofar = (sofar + round - 1) &~ (round - 1); 2135 file_sofar = (file_sofar + round - 1) &~ (round - 1); 2136 } 2137 2138 /* Align the sections in the file to the same boundary on 2139 which they are aligned in virtual memory. */ 2140 sofar = BFD_ALIGN (sofar, 1 << alignment_power); 2141 if ((current->flags & SEC_HAS_CONTENTS) != 0) 2142 file_sofar = BFD_ALIGN (file_sofar, 1 << alignment_power); 2143 2144 if ((abfd->flags & D_PAGED) != 0 2145 && (current->flags & SEC_ALLOC) != 0) 2146 { 2147 sofar += (current->vma - sofar) % round; 2148 if ((current->flags & SEC_HAS_CONTENTS) != 0) 2149 file_sofar += (current->vma - file_sofar) % round; 2150 } 2151 2152 if ((current->flags & (SEC_HAS_CONTENTS | SEC_LOAD)) != 0) 2153 current->filepos = file_sofar; 2154 2155 sofar += current->size; 2156 if ((current->flags & SEC_HAS_CONTENTS) != 0) 2157 file_sofar += current->size; 2158 2159 /* Make sure that this section is of the right size too. */ 2160 old_sofar = sofar; 2161 sofar = BFD_ALIGN (sofar, 1 << alignment_power); 2162 if ((current->flags & SEC_HAS_CONTENTS) != 0) 2163 file_sofar = BFD_ALIGN (file_sofar, 1 << alignment_power); 2164 current->size += sofar - old_sofar; 2165 } 2166 2167 free (sorted_hdrs); 2168 sorted_hdrs = NULL; 2169 2170 ecoff_data (abfd)->reloc_filepos = file_sofar; 2171 2172 return true; 2173 } 2174 2175 /* Determine the location of the relocs for all the sections in the 2176 output file, as well as the location of the symbolic debugging 2177 information. */ 2178 2179 static bfd_size_type 2180 ecoff_compute_reloc_file_positions (bfd *abfd) 2181 { 2182 const bfd_size_type external_reloc_size = 2183 ecoff_backend (abfd)->external_reloc_size; 2184 file_ptr reloc_base; 2185 bfd_size_type reloc_size; 2186 asection *current; 2187 file_ptr sym_base; 2188 2189 if (! abfd->output_has_begun) 2190 { 2191 if (! ecoff_compute_section_file_positions (abfd)) 2192 abort (); 2193 abfd->output_has_begun = true; 2194 } 2195 2196 reloc_base = ecoff_data (abfd)->reloc_filepos; 2197 2198 reloc_size = 0; 2199 for (current = abfd->sections; 2200 current != NULL; 2201 current = current->next) 2202 { 2203 if (current->reloc_count == 0) 2204 current->rel_filepos = 0; 2205 else 2206 { 2207 bfd_size_type relsize; 2208 2209 current->rel_filepos = reloc_base; 2210 relsize = current->reloc_count * external_reloc_size; 2211 reloc_size += relsize; 2212 reloc_base += relsize; 2213 } 2214 } 2215 2216 sym_base = ecoff_data (abfd)->reloc_filepos + reloc_size; 2217 2218 /* At least on Ultrix, the symbol table of an executable file must 2219 be aligned to a page boundary. FIXME: Is this true on other 2220 platforms? */ 2221 if ((abfd->flags & EXEC_P) != 0 2222 && (abfd->flags & D_PAGED) != 0) 2223 sym_base = ((sym_base + ecoff_backend (abfd)->round - 1) 2224 &~ (ecoff_backend (abfd)->round - 1)); 2225 2226 ecoff_data (abfd)->sym_filepos = sym_base; 2227 2228 return reloc_size; 2229 } 2230 2231 /* Set the contents of a section. */ 2232 2233 bool 2234 _bfd_ecoff_set_section_contents (bfd *abfd, 2235 asection *section, 2236 const void * location, 2237 file_ptr offset, 2238 bfd_size_type count) 2239 { 2240 file_ptr pos; 2241 2242 /* This must be done first, because bfd_set_section_contents is 2243 going to set output_has_begun to TRUE. */ 2244 if (! abfd->output_has_begun 2245 && ! ecoff_compute_section_file_positions (abfd)) 2246 return false; 2247 2248 /* Handle the .lib section specially so that Irix 4 shared libraries 2249 work out. See coff_set_section_contents in coffcode.h. */ 2250 if (streq (section->name, _LIB)) 2251 { 2252 bfd_byte *rec, *recend; 2253 2254 rec = (bfd_byte *) location; 2255 recend = rec + count; 2256 while (rec < recend) 2257 { 2258 ++section->lma; 2259 rec += bfd_get_32 (abfd, rec) * 4; 2260 } 2261 2262 BFD_ASSERT (rec == recend); 2263 } 2264 2265 if (count == 0) 2266 return true; 2267 2268 pos = section->filepos + offset; 2269 if (bfd_seek (abfd, pos, SEEK_SET) != 0 2270 || bfd_write (location, count, abfd) != count) 2271 return false; 2272 2273 return true; 2274 } 2275 2276 /* Set the GP value for an ECOFF file. This is a hook used by the 2277 assembler. */ 2278 2279 bool 2280 bfd_ecoff_set_gp_value (bfd *abfd, bfd_vma gp_value) 2281 { 2282 if (bfd_get_flavour (abfd) != bfd_target_ecoff_flavour 2283 || bfd_get_format (abfd) != bfd_object) 2284 { 2285 bfd_set_error (bfd_error_invalid_operation); 2286 return false; 2287 } 2288 2289 ecoff_data (abfd)->gp = gp_value; 2290 2291 return true; 2292 } 2293 2294 /* Set the register masks for an ECOFF file. This is a hook used by 2295 the assembler. */ 2296 2297 bool 2298 bfd_ecoff_set_regmasks (bfd *abfd, 2299 unsigned long gprmask, 2300 unsigned long fprmask, 2301 unsigned long *cprmask) 2302 { 2303 ecoff_data_type *tdata; 2304 2305 if (bfd_get_flavour (abfd) != bfd_target_ecoff_flavour 2306 || bfd_get_format (abfd) != bfd_object) 2307 { 2308 bfd_set_error (bfd_error_invalid_operation); 2309 return false; 2310 } 2311 2312 tdata = ecoff_data (abfd); 2313 tdata->gprmask = gprmask; 2314 tdata->fprmask = fprmask; 2315 if (cprmask != NULL) 2316 { 2317 int i; 2318 2319 for (i = 0; i < 3; i++) 2320 tdata->cprmask[i] = cprmask[i]; 2321 } 2322 2323 return true; 2324 } 2325 2326 /* Get ECOFF EXTR information for an external symbol. This function 2327 is passed to bfd_ecoff_debug_externals. */ 2328 2329 static bool 2330 ecoff_get_extr (asymbol *sym, EXTR *esym) 2331 { 2332 ecoff_symbol_type *ecoff_sym_ptr; 2333 bfd *input_bfd; 2334 2335 if (bfd_asymbol_flavour (sym) != bfd_target_ecoff_flavour 2336 || ecoffsymbol (sym)->native == NULL) 2337 { 2338 /* Don't include debugging, local, or section symbols. */ 2339 if ((sym->flags & BSF_DEBUGGING) != 0 2340 || (sym->flags & BSF_LOCAL) != 0 2341 || (sym->flags & BSF_SECTION_SYM) != 0) 2342 return false; 2343 2344 esym->jmptbl = 0; 2345 esym->cobol_main = 0; 2346 esym->weakext = (sym->flags & BSF_WEAK) != 0; 2347 esym->reserved = 0; 2348 esym->ifd = ifdNil; 2349 /* FIXME: we can do better than this for st and sc. */ 2350 esym->asym.st = stGlobal; 2351 esym->asym.sc = scAbs; 2352 esym->asym.reserved = 0; 2353 esym->asym.index = indexNil; 2354 return true; 2355 } 2356 2357 ecoff_sym_ptr = ecoffsymbol (sym); 2358 2359 if (ecoff_sym_ptr->local) 2360 return false; 2361 2362 input_bfd = bfd_asymbol_bfd (sym); 2363 (*(ecoff_backend (input_bfd)->debug_swap.swap_ext_in)) 2364 (input_bfd, ecoff_sym_ptr->native, esym); 2365 2366 /* If the symbol was defined by the linker, then esym will be 2367 undefined but sym will not be. Get a better class for such a 2368 symbol. */ 2369 if ((esym->asym.sc == scUndefined 2370 || esym->asym.sc == scSUndefined) 2371 && ! bfd_is_und_section (bfd_asymbol_section (sym))) 2372 esym->asym.sc = scAbs; 2373 2374 /* Adjust the FDR index for the symbol by that used for the input 2375 BFD. */ 2376 if (esym->ifd != -1) 2377 { 2378 struct ecoff_debug_info *input_debug; 2379 2380 input_debug = &ecoff_data (input_bfd)->debug_info; 2381 BFD_ASSERT (esym->ifd < input_debug->symbolic_header.ifdMax); 2382 if (input_debug->ifdmap != NULL) 2383 esym->ifd = input_debug->ifdmap[esym->ifd]; 2384 } 2385 2386 return true; 2387 } 2388 2389 /* Set the external symbol index. This routine is passed to 2390 bfd_ecoff_debug_externals. */ 2391 2392 static void 2393 ecoff_set_index (asymbol *sym, bfd_size_type indx) 2394 { 2395 ecoff_set_sym_index (sym, indx); 2396 } 2397 2398 /* Write out an ECOFF file. */ 2399 2400 bool 2401 _bfd_ecoff_write_object_contents (bfd *abfd) 2402 { 2403 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 2404 const bfd_vma round = backend->round; 2405 const bfd_size_type filhsz = bfd_coff_filhsz (abfd); 2406 const bfd_size_type aoutsz = bfd_coff_aoutsz (abfd); 2407 const bfd_size_type scnhsz = bfd_coff_scnhsz (abfd); 2408 const bfd_size_type external_hdr_size 2409 = backend->debug_swap.external_hdr_size; 2410 const bfd_size_type external_reloc_size = backend->external_reloc_size; 2411 void (* const adjust_reloc_out) (bfd *, const arelent *, struct internal_reloc *) 2412 = backend->adjust_reloc_out; 2413 void (* const swap_reloc_out) (bfd *, const struct internal_reloc *, void *) 2414 = backend->swap_reloc_out; 2415 struct ecoff_debug_info * const debug = &ecoff_data (abfd)->debug_info; 2416 HDRR * const symhdr = &debug->symbolic_header; 2417 asection *current; 2418 unsigned int count; 2419 bfd_size_type reloc_size; 2420 bfd_size_type text_size; 2421 bfd_vma text_start; 2422 bool set_text_start; 2423 bfd_size_type data_size; 2424 bfd_vma data_start; 2425 bool set_data_start; 2426 bfd_size_type bss_size; 2427 void * buff = NULL; 2428 void * reloc_buff = NULL; 2429 struct internal_filehdr internal_f; 2430 struct internal_aouthdr internal_a; 2431 int i; 2432 2433 /* Determine where the sections and relocs will go in the output 2434 file. */ 2435 reloc_size = ecoff_compute_reloc_file_positions (abfd); 2436 2437 count = 1; 2438 for (current = abfd->sections; 2439 current != NULL; 2440 current = current->next) 2441 { 2442 current->target_index = count; 2443 ++count; 2444 } 2445 2446 if ((abfd->flags & D_PAGED) != 0) 2447 text_size = _bfd_ecoff_sizeof_headers (abfd, NULL); 2448 else 2449 text_size = 0; 2450 text_start = 0; 2451 set_text_start = false; 2452 data_size = 0; 2453 data_start = 0; 2454 set_data_start = false; 2455 bss_size = 0; 2456 2457 /* Write section headers to the file. */ 2458 2459 /* Allocate buff big enough to hold a section header, 2460 file header, or a.out header. */ 2461 { 2462 bfd_size_type siz; 2463 2464 siz = scnhsz; 2465 if (siz < filhsz) 2466 siz = filhsz; 2467 if (siz < aoutsz) 2468 siz = aoutsz; 2469 buff = bfd_malloc (siz); 2470 if (buff == NULL) 2471 goto error_return; 2472 } 2473 2474 internal_f.f_nscns = 0; 2475 if (bfd_seek (abfd, filhsz + aoutsz, SEEK_SET) != 0) 2476 goto error_return; 2477 2478 for (current = abfd->sections; 2479 current != NULL; 2480 current = current->next) 2481 { 2482 struct internal_scnhdr section; 2483 bfd_vma vma; 2484 2485 ++internal_f.f_nscns; 2486 2487 strncpy (section.s_name, current->name, sizeof section.s_name); 2488 2489 /* This seems to be correct for Irix 4 shared libraries. */ 2490 vma = bfd_section_vma (current); 2491 if (streq (current->name, _LIB)) 2492 section.s_vaddr = 0; 2493 else 2494 section.s_vaddr = vma; 2495 2496 section.s_paddr = current->lma; 2497 section.s_size = current->size; 2498 2499 /* If this section is unloadable then the scnptr will be 0. */ 2500 if ((current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) 2501 section.s_scnptr = 0; 2502 else 2503 section.s_scnptr = current->filepos; 2504 section.s_relptr = current->rel_filepos; 2505 2506 /* FIXME: the lnnoptr of the .sbss or .sdata section of an 2507 object file produced by the assembler is supposed to point to 2508 information about how much room is required by objects of 2509 various different sizes. I think this only matters if we 2510 want the linker to compute the best size to use, or 2511 something. I don't know what happens if the information is 2512 not present. */ 2513 if (! streq (current->name, _PDATA)) 2514 section.s_lnnoptr = 0; 2515 else 2516 { 2517 /* The Alpha ECOFF .pdata section uses the lnnoptr field to 2518 hold the number of entries in the section (each entry is 2519 8 bytes). We stored this in the line_filepos field in 2520 ecoff_compute_section_file_positions. */ 2521 section.s_lnnoptr = current->line_filepos; 2522 } 2523 2524 section.s_nreloc = current->reloc_count; 2525 section.s_nlnno = 0; 2526 section.s_flags = ecoff_sec_to_styp_flags (current->name, 2527 current->flags); 2528 2529 if (bfd_coff_swap_scnhdr_out (abfd, (void *) §ion, buff) == 0 2530 || bfd_write (buff, scnhsz, abfd) != scnhsz) 2531 goto error_return; 2532 2533 if ((section.s_flags & STYP_TEXT) != 0 2534 || ((section.s_flags & STYP_RDATA) != 0 2535 && ecoff_data (abfd)->rdata_in_text) 2536 || section.s_flags == STYP_PDATA 2537 || (section.s_flags & STYP_DYNAMIC) != 0 2538 || (section.s_flags & STYP_LIBLIST) != 0 2539 || (section.s_flags & STYP_RELDYN) != 0 2540 || section.s_flags == STYP_CONFLIC 2541 || (section.s_flags & STYP_DYNSTR) != 0 2542 || (section.s_flags & STYP_DYNSYM) != 0 2543 || (section.s_flags & STYP_HASH) != 0 2544 || (section.s_flags & STYP_ECOFF_INIT) != 0 2545 || (section.s_flags & STYP_ECOFF_FINI) != 0 2546 || section.s_flags == STYP_RCONST) 2547 { 2548 text_size += current->size; 2549 if (! set_text_start || text_start > vma) 2550 { 2551 text_start = vma; 2552 set_text_start = true; 2553 } 2554 } 2555 else if ((section.s_flags & STYP_RDATA) != 0 2556 || (section.s_flags & STYP_DATA) != 0 2557 || (section.s_flags & STYP_LITA) != 0 2558 || (section.s_flags & STYP_LIT8) != 0 2559 || (section.s_flags & STYP_LIT4) != 0 2560 || (section.s_flags & STYP_SDATA) != 0 2561 || section.s_flags == STYP_XDATA 2562 || (section.s_flags & STYP_GOT) != 0) 2563 { 2564 data_size += current->size; 2565 if (! set_data_start || data_start > vma) 2566 { 2567 data_start = vma; 2568 set_data_start = true; 2569 } 2570 } 2571 else if ((section.s_flags & STYP_BSS) != 0 2572 || (section.s_flags & STYP_SBSS) != 0) 2573 bss_size += current->size; 2574 else if (section.s_flags == 0 2575 || (section.s_flags & STYP_ECOFF_LIB) != 0 2576 || section.s_flags == STYP_COMMENT) 2577 /* Do nothing. */ ; 2578 else 2579 abort (); 2580 } 2581 2582 /* Set up the file header. */ 2583 internal_f.f_magic = ecoff_get_magic (abfd); 2584 2585 /* We will NOT put a fucking timestamp in the header here. Every 2586 time you put it back, I will come in and take it out again. I'm 2587 sorry. This field does not belong here. We fill it with a 0 so 2588 it compares the same but is not a reasonable time. -- 2589 gnu@cygnus.com. */ 2590 internal_f.f_timdat = 0; 2591 2592 if (bfd_get_symcount (abfd) != 0) 2593 { 2594 /* The ECOFF f_nsyms field is not actually the number of 2595 symbols, it's the size of symbolic information header. */ 2596 internal_f.f_nsyms = external_hdr_size; 2597 internal_f.f_symptr = ecoff_data (abfd)->sym_filepos; 2598 } 2599 else 2600 { 2601 internal_f.f_nsyms = 0; 2602 internal_f.f_symptr = 0; 2603 } 2604 2605 internal_f.f_opthdr = aoutsz; 2606 2607 internal_f.f_flags = F_LNNO; 2608 if (reloc_size == 0) 2609 internal_f.f_flags |= F_RELFLG; 2610 if (bfd_get_symcount (abfd) == 0) 2611 internal_f.f_flags |= F_LSYMS; 2612 if (abfd->flags & EXEC_P) 2613 internal_f.f_flags |= F_EXEC; 2614 2615 if (bfd_little_endian (abfd)) 2616 internal_f.f_flags |= F_AR32WR; 2617 else 2618 internal_f.f_flags |= F_AR32W; 2619 2620 /* Set up the ``optional'' header. */ 2621 if ((abfd->flags & D_PAGED) != 0) 2622 internal_a.magic = ECOFF_AOUT_ZMAGIC; 2623 else 2624 internal_a.magic = ECOFF_AOUT_OMAGIC; 2625 2626 /* FIXME: Is this really correct? */ 2627 internal_a.vstamp = symhdr->vstamp; 2628 2629 /* At least on Ultrix, these have to be rounded to page boundaries. 2630 FIXME: Is this true on other platforms? */ 2631 if ((abfd->flags & D_PAGED) != 0) 2632 { 2633 internal_a.tsize = (text_size + round - 1) &~ (round - 1); 2634 internal_a.text_start = text_start &~ (round - 1); 2635 internal_a.dsize = (data_size + round - 1) &~ (round - 1); 2636 internal_a.data_start = data_start &~ (round - 1); 2637 } 2638 else 2639 { 2640 internal_a.tsize = text_size; 2641 internal_a.text_start = text_start; 2642 internal_a.dsize = data_size; 2643 internal_a.data_start = data_start; 2644 } 2645 2646 /* On Ultrix, the initial portions of the .sbss and .bss segments 2647 are at the end of the data section. The bsize field in the 2648 optional header records how many bss bytes are required beyond 2649 those in the data section. The value is not rounded to a page 2650 boundary. */ 2651 if (bss_size < internal_a.dsize - data_size) 2652 bss_size = 0; 2653 else 2654 bss_size -= internal_a.dsize - data_size; 2655 internal_a.bsize = bss_size; 2656 internal_a.bss_start = internal_a.data_start + internal_a.dsize; 2657 2658 internal_a.entry = bfd_get_start_address (abfd); 2659 2660 internal_a.gp_value = ecoff_data (abfd)->gp; 2661 2662 internal_a.gprmask = ecoff_data (abfd)->gprmask; 2663 internal_a.fprmask = ecoff_data (abfd)->fprmask; 2664 for (i = 0; i < 4; i++) 2665 internal_a.cprmask[i] = ecoff_data (abfd)->cprmask[i]; 2666 2667 /* Let the backend adjust the headers if necessary. */ 2668 if (backend->adjust_headers) 2669 { 2670 if (! (*backend->adjust_headers) (abfd, &internal_f, &internal_a)) 2671 goto error_return; 2672 } 2673 2674 /* Write out the file header and the optional header. */ 2675 if (bfd_seek (abfd, 0, SEEK_SET) != 0) 2676 goto error_return; 2677 2678 bfd_coff_swap_filehdr_out (abfd, (void *) &internal_f, buff); 2679 if (bfd_write (buff, filhsz, abfd) != filhsz) 2680 goto error_return; 2681 2682 bfd_coff_swap_aouthdr_out (abfd, (void *) &internal_a, buff); 2683 if (bfd_write (buff, aoutsz, abfd) != aoutsz) 2684 goto error_return; 2685 2686 /* Build the external symbol information. This must be done before 2687 writing out the relocs so that we know the symbol indices. We 2688 don't do this if this BFD was created by the backend linker, 2689 since it will have already handled the symbols and relocs. */ 2690 if (! ecoff_data (abfd)->linker) 2691 { 2692 symhdr->iextMax = 0; 2693 symhdr->issExtMax = 0; 2694 debug->external_ext = debug->external_ext_end = NULL; 2695 debug->ssext = debug->ssext_end = NULL; 2696 if (! bfd_ecoff_debug_externals (abfd, debug, &backend->debug_swap, 2697 (abfd->flags & EXEC_P) == 0, 2698 ecoff_get_extr, ecoff_set_index)) 2699 goto error_return; 2700 2701 /* Write out the relocs. */ 2702 for (current = abfd->sections; 2703 current != NULL; 2704 current = current->next) 2705 { 2706 arelent **reloc_ptr_ptr; 2707 arelent **reloc_end; 2708 char *out_ptr; 2709 bfd_size_type amt; 2710 2711 if (current->reloc_count == 0) 2712 continue; 2713 2714 amt = current->reloc_count * external_reloc_size; 2715 reloc_buff = bfd_zalloc (abfd, amt); 2716 if (reloc_buff == NULL) 2717 goto error_return; 2718 2719 reloc_ptr_ptr = current->orelocation; 2720 reloc_end = reloc_ptr_ptr + current->reloc_count; 2721 out_ptr = (char *) reloc_buff; 2722 2723 for (; 2724 reloc_ptr_ptr < reloc_end; 2725 reloc_ptr_ptr++, out_ptr += external_reloc_size) 2726 { 2727 arelent *reloc; 2728 asymbol *sym; 2729 struct internal_reloc in; 2730 2731 memset ((void *) &in, 0, sizeof in); 2732 2733 reloc = *reloc_ptr_ptr; 2734 sym = *reloc->sym_ptr_ptr; 2735 2736 /* If the howto field has not been initialised then skip this reloc. 2737 This assumes that an error message has been issued elsewhere. */ 2738 if (reloc->howto == NULL) 2739 continue; 2740 2741 in.r_vaddr = reloc->address + bfd_section_vma (current); 2742 in.r_type = reloc->howto->type; 2743 2744 if ((sym->flags & BSF_SECTION_SYM) == 0) 2745 { 2746 in.r_symndx = ecoff_get_sym_index (*reloc->sym_ptr_ptr); 2747 in.r_extern = 1; 2748 } 2749 else 2750 { 2751 const char *name; 2752 unsigned int j; 2753 static struct 2754 { 2755 const char * name; 2756 long r_symndx; 2757 } 2758 section_symndx [] = 2759 { 2760 { _TEXT, RELOC_SECTION_TEXT }, 2761 { _RDATA, RELOC_SECTION_RDATA }, 2762 { _DATA, RELOC_SECTION_DATA }, 2763 { _SDATA, RELOC_SECTION_SDATA }, 2764 { _SBSS, RELOC_SECTION_SBSS }, 2765 { _BSS, RELOC_SECTION_BSS }, 2766 { _INIT, RELOC_SECTION_INIT }, 2767 { _LIT8, RELOC_SECTION_LIT8 }, 2768 { _LIT4, RELOC_SECTION_LIT4 }, 2769 { _XDATA, RELOC_SECTION_XDATA }, 2770 { _PDATA, RELOC_SECTION_PDATA }, 2771 { _FINI, RELOC_SECTION_FINI }, 2772 { _LITA, RELOC_SECTION_LITA }, 2773 { "*ABS*", RELOC_SECTION_ABS }, 2774 { _RCONST, RELOC_SECTION_RCONST } 2775 }; 2776 2777 name = bfd_section_name (bfd_asymbol_section (sym)); 2778 2779 for (j = 0; j < ARRAY_SIZE (section_symndx); j++) 2780 if (streq (name, section_symndx[j].name)) 2781 { 2782 in.r_symndx = section_symndx[j].r_symndx; 2783 break; 2784 } 2785 2786 if (j == ARRAY_SIZE (section_symndx)) 2787 abort (); 2788 in.r_extern = 0; 2789 } 2790 2791 (*adjust_reloc_out) (abfd, reloc, &in); 2792 2793 (*swap_reloc_out) (abfd, &in, (void *) out_ptr); 2794 } 2795 2796 if (bfd_seek (abfd, current->rel_filepos, SEEK_SET) != 0) 2797 goto error_return; 2798 amt = current->reloc_count * external_reloc_size; 2799 if (bfd_write (reloc_buff, amt, abfd) != amt) 2800 goto error_return; 2801 bfd_release (abfd, reloc_buff); 2802 reloc_buff = NULL; 2803 } 2804 2805 /* Write out the symbolic debugging information. */ 2806 if (bfd_get_symcount (abfd) > 0) 2807 { 2808 /* Write out the debugging information. */ 2809 if (! bfd_ecoff_write_debug (abfd, debug, &backend->debug_swap, 2810 ecoff_data (abfd)->sym_filepos)) 2811 goto error_return; 2812 } 2813 } 2814 2815 /* The .bss section of a demand paged executable must receive an 2816 entire page. If there are symbols, the symbols will start on the 2817 next page. If there are no symbols, we must fill out the page by 2818 hand. */ 2819 if (bfd_get_symcount (abfd) == 0 2820 && (abfd->flags & EXEC_P) != 0 2821 && (abfd->flags & D_PAGED) != 0) 2822 { 2823 char c; 2824 2825 if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos - 1, SEEK_SET) != 0) 2826 goto error_return; 2827 if (bfd_read (&c, 1, abfd) == 0) 2828 c = 0; 2829 if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos - 1, SEEK_SET) != 0) 2830 goto error_return; 2831 if (bfd_write (&c, 1, abfd) != 1) 2832 goto error_return; 2833 } 2834 2835 if (reloc_buff != NULL) 2836 bfd_release (abfd, reloc_buff); 2837 free (buff); 2838 return true; 2839 error_return: 2840 if (reloc_buff != NULL) 2841 bfd_release (abfd, reloc_buff); 2842 free (buff); 2843 return false; 2844 } 2845 2846 /* Archive handling. ECOFF uses what appears to be a unique type of 2847 archive header (armap). The byte ordering of the armap and the 2848 contents are encoded in the name of the armap itself. At least for 2849 now, we only support archives with the same byte ordering in the 2850 armap and the contents. 2851 2852 The first four bytes in the armap are the number of symbol 2853 definitions. This is always a power of two. 2854 2855 This is followed by the symbol definitions. Each symbol definition 2856 occupies 8 bytes. The first four bytes are the offset from the 2857 start of the armap strings to the null-terminated string naming 2858 this symbol. The second four bytes are the file offset to the 2859 archive member which defines this symbol. If the second four bytes 2860 are 0, then this is not actually a symbol definition, and it should 2861 be ignored. 2862 2863 The symbols are hashed into the armap with a closed hashing scheme. 2864 See the functions below for the details of the algorithm. 2865 2866 After the symbol definitions comes four bytes holding the size of 2867 the string table, followed by the string table itself. */ 2868 2869 /* The name of an archive headers looks like this: 2870 __________E[BL]E[BL]_ (with a trailing space). 2871 The trailing space is changed to an X if the archive is changed to 2872 indicate that the armap is out of date. 2873 2874 The Alpha seems to use ________64E[BL]E[BL]_. */ 2875 2876 #define ARMAP_BIG_ENDIAN 'B' 2877 #define ARMAP_LITTLE_ENDIAN 'L' 2878 #define ARMAP_MARKER 'E' 2879 #define ARMAP_START_LENGTH 10 2880 #define ARMAP_HEADER_MARKER_INDEX 10 2881 #define ARMAP_HEADER_ENDIAN_INDEX 11 2882 #define ARMAP_OBJECT_MARKER_INDEX 12 2883 #define ARMAP_OBJECT_ENDIAN_INDEX 13 2884 #define ARMAP_END_INDEX 14 2885 #define ARMAP_END "_ " 2886 2887 /* This is a magic number used in the hashing algorithm. */ 2888 #define ARMAP_HASH_MAGIC 0x9dd68ab5 2889 2890 /* This returns the hash value to use for a string. It also sets 2891 *REHASH to the rehash adjustment if the first slot is taken. SIZE 2892 is the number of entries in the hash table, and HLOG is the log 2893 base 2 of SIZE. */ 2894 2895 static unsigned int 2896 ecoff_armap_hash (const char *s, 2897 unsigned int *rehash, 2898 unsigned int size, 2899 unsigned int hlog) 2900 { 2901 unsigned int hash; 2902 2903 if (hlog == 0) 2904 return 0; 2905 hash = *s++; 2906 while (*s != '\0') 2907 hash = ((hash >> 27) | (hash << 5)) + *s++; 2908 hash *= ARMAP_HASH_MAGIC; 2909 *rehash = (hash & (size - 1)) | 1; 2910 return hash >> (32 - hlog); 2911 } 2912 2913 /* Read in the armap. */ 2914 2915 bool 2916 _bfd_ecoff_slurp_armap (bfd *abfd) 2917 { 2918 char nextname[17]; 2919 unsigned int i; 2920 struct areltdata *mapdata; 2921 bfd_size_type parsed_size, stringsize; 2922 char *raw_armap; 2923 struct artdata *ardata; 2924 unsigned int count; 2925 char *raw_ptr; 2926 carsym *symdef_ptr; 2927 char *stringbase; 2928 bfd_size_type amt; 2929 2930 /* Get the name of the first element. */ 2931 i = bfd_read (nextname, 16, abfd); 2932 if (i == 0) 2933 return true; 2934 if (i != 16) 2935 return false; 2936 2937 if (bfd_seek (abfd, -16, SEEK_CUR) != 0) 2938 return false; 2939 2940 /* Irix 4.0.5F apparently can use either an ECOFF armap or a 2941 standard COFF armap. We could move the ECOFF armap stuff into 2942 bfd_slurp_armap, but that seems inappropriate since no other 2943 target uses this format. Instead, we check directly for a COFF 2944 armap. */ 2945 if (startswith (nextname, "/ ")) 2946 return bfd_slurp_armap (abfd); 2947 2948 /* See if the first element is an armap. */ 2949 if (strncmp (nextname, ecoff_backend (abfd)->armap_start, ARMAP_START_LENGTH) != 0 2950 || nextname[ARMAP_HEADER_MARKER_INDEX] != ARMAP_MARKER 2951 || (nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN 2952 && nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN) 2953 || nextname[ARMAP_OBJECT_MARKER_INDEX] != ARMAP_MARKER 2954 || (nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN 2955 && nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN) 2956 || strncmp (nextname + ARMAP_END_INDEX, ARMAP_END, sizeof ARMAP_END - 1) != 0) 2957 { 2958 abfd->has_armap = false; 2959 return true; 2960 } 2961 2962 /* Make sure we have the right byte ordering. */ 2963 if (((nextname[ARMAP_HEADER_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN) 2964 ^ (bfd_header_big_endian (abfd))) 2965 || ((nextname[ARMAP_OBJECT_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN) 2966 ^ (bfd_big_endian (abfd)))) 2967 { 2968 bfd_set_error (bfd_error_wrong_format); 2969 return false; 2970 } 2971 2972 /* Read in the armap. */ 2973 ardata = bfd_ardata (abfd); 2974 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); 2975 if (mapdata == NULL) 2976 return false; 2977 parsed_size = mapdata->parsed_size; 2978 free (mapdata); 2979 2980 if (parsed_size + 1 < 9) 2981 { 2982 bfd_set_error (bfd_error_malformed_archive); 2983 return false; 2984 } 2985 2986 raw_armap = (char *) _bfd_alloc_and_read (abfd, parsed_size + 1, parsed_size); 2987 if (raw_armap == NULL) 2988 return false; 2989 raw_armap[parsed_size] = 0; 2990 2991 ardata->tdata = (void *) raw_armap; 2992 2993 count = H_GET_32 (abfd, raw_armap); 2994 if ((parsed_size - 8) / 8 < count) 2995 goto error_malformed; 2996 2997 ardata->symdef_count = 0; 2998 ardata->cache = NULL; 2999 3000 /* This code used to overlay the symdefs over the raw archive data, 3001 but that doesn't work on a 64 bit host. */ 3002 stringbase = raw_armap + count * 8 + 8; 3003 stringsize = parsed_size - (count * 8 + 8); 3004 3005 #ifdef CHECK_ARMAP_HASH 3006 { 3007 unsigned int hlog; 3008 3009 /* Double check that I have the hashing algorithm right by making 3010 sure that every symbol can be looked up successfully. */ 3011 hlog = 0; 3012 for (i = 1; i < count; i <<= 1) 3013 hlog++; 3014 BFD_ASSERT (i == count); 3015 3016 raw_ptr = raw_armap + 4; 3017 for (i = 0; i < count; i++, raw_ptr += 8) 3018 { 3019 unsigned int name_offset, file_offset; 3020 unsigned int hash, rehash, srch; 3021 3022 name_offset = H_GET_32 (abfd, raw_ptr); 3023 file_offset = H_GET_32 (abfd, (raw_ptr + 4)); 3024 if (file_offset == 0) 3025 continue; 3026 hash = ecoff_armap_hash (stringbase + name_offset, &rehash, count, 3027 hlog); 3028 if (hash == i) 3029 continue; 3030 3031 /* See if we can rehash to this location. */ 3032 for (srch = (hash + rehash) & (count - 1); 3033 srch != hash && srch != i; 3034 srch = (srch + rehash) & (count - 1)) 3035 BFD_ASSERT (H_GET_32 (abfd, (raw_armap + 8 + srch * 8)) != 0); 3036 BFD_ASSERT (srch == i); 3037 } 3038 } 3039 3040 #endif /* CHECK_ARMAP_HASH */ 3041 3042 raw_ptr = raw_armap + 4; 3043 for (i = 0; i < count; i++, raw_ptr += 8) 3044 if (H_GET_32 (abfd, (raw_ptr + 4)) != 0) 3045 ++ardata->symdef_count; 3046 3047 amt = ardata->symdef_count; 3048 amt *= sizeof (carsym); 3049 symdef_ptr = (carsym *) bfd_alloc (abfd, amt); 3050 if (!symdef_ptr) 3051 goto error_exit; 3052 3053 ardata->symdefs = symdef_ptr; 3054 3055 raw_ptr = raw_armap + 4; 3056 for (i = 0; i < count; i++, raw_ptr += 8) 3057 { 3058 unsigned int name_offset, file_offset; 3059 3060 file_offset = H_GET_32 (abfd, (raw_ptr + 4)); 3061 if (file_offset == 0) 3062 continue; 3063 name_offset = H_GET_32 (abfd, raw_ptr); 3064 if (name_offset > stringsize) 3065 goto error_malformed; 3066 symdef_ptr->name = stringbase + name_offset; 3067 symdef_ptr->file_offset = file_offset; 3068 ++symdef_ptr; 3069 } 3070 3071 ardata->first_file_filepos = bfd_tell (abfd); 3072 /* Pad to an even boundary. */ 3073 ardata->first_file_filepos += ardata->first_file_filepos % 2; 3074 abfd->has_armap = true; 3075 return true; 3076 3077 error_malformed: 3078 bfd_set_error (bfd_error_malformed_archive); 3079 error_exit: 3080 ardata->symdef_count = 0; 3081 ardata->symdefs = NULL; 3082 ardata->tdata = NULL; 3083 bfd_release (abfd, raw_armap); 3084 return false; 3085 } 3086 3087 /* Write out an armap. */ 3088 3089 bool 3090 _bfd_ecoff_write_armap (bfd *abfd, 3091 unsigned int elength, 3092 struct orl *map, 3093 unsigned int orl_count, 3094 int stridx) 3095 { 3096 unsigned int hashsize, hashlog; 3097 bfd_size_type symdefsize; 3098 int padit; 3099 unsigned int stringsize; 3100 unsigned int mapsize; 3101 file_ptr firstreal; 3102 struct ar_hdr hdr; 3103 struct stat statbuf; 3104 unsigned int i; 3105 bfd_byte temp[4]; 3106 bfd_byte *hashtable; 3107 bfd *current; 3108 bfd *last_elt; 3109 3110 /* Ultrix appears to use as a hash table size the least power of two 3111 greater than twice the number of entries. */ 3112 for (hashlog = 0; ((unsigned int) 1 << hashlog) <= 2 * orl_count; hashlog++) 3113 ; 3114 hashsize = 1 << hashlog; 3115 3116 symdefsize = hashsize * 8; 3117 padit = stridx % 2; 3118 stringsize = stridx + padit; 3119 3120 /* Include 8 bytes to store symdefsize and stringsize in output. */ 3121 mapsize = symdefsize + stringsize + 8; 3122 3123 firstreal = SARMAG + sizeof (struct ar_hdr) + mapsize + elength; 3124 3125 memset ((void *) &hdr, 0, sizeof hdr); 3126 3127 /* Work out the ECOFF armap name. */ 3128 strcpy (hdr.ar_name, ecoff_backend (abfd)->armap_start); 3129 hdr.ar_name[ARMAP_HEADER_MARKER_INDEX] = ARMAP_MARKER; 3130 hdr.ar_name[ARMAP_HEADER_ENDIAN_INDEX] = 3131 (bfd_header_big_endian (abfd) 3132 ? ARMAP_BIG_ENDIAN 3133 : ARMAP_LITTLE_ENDIAN); 3134 hdr.ar_name[ARMAP_OBJECT_MARKER_INDEX] = ARMAP_MARKER; 3135 hdr.ar_name[ARMAP_OBJECT_ENDIAN_INDEX] = 3136 bfd_big_endian (abfd) ? ARMAP_BIG_ENDIAN : ARMAP_LITTLE_ENDIAN; 3137 memcpy (hdr.ar_name + ARMAP_END_INDEX, ARMAP_END, sizeof ARMAP_END - 1); 3138 3139 /* Write the timestamp of the archive header to be just a little bit 3140 later than the timestamp of the file, otherwise the linker will 3141 complain that the index is out of date. Actually, the Ultrix 3142 linker just checks the archive name; the GNU linker may check the 3143 date. */ 3144 stat (bfd_get_filename (abfd), &statbuf); 3145 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", 3146 (long) (statbuf.st_mtime + 60)); 3147 3148 /* The DECstation uses zeroes for the uid, gid and mode of the 3149 armap. */ 3150 hdr.ar_uid[0] = '0'; 3151 hdr.ar_gid[0] = '0'; 3152 /* Building gcc ends up extracting the armap as a file - twice. */ 3153 hdr.ar_mode[0] = '6'; 3154 hdr.ar_mode[1] = '4'; 3155 hdr.ar_mode[2] = '4'; 3156 3157 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld", mapsize); 3158 3159 hdr.ar_fmag[0] = '`'; 3160 hdr.ar_fmag[1] = '\012'; 3161 3162 /* Turn all null bytes in the header into spaces. */ 3163 for (i = 0; i < sizeof (struct ar_hdr); i++) 3164 if (((char *) (&hdr))[i] == '\0') 3165 (((char *) (&hdr))[i]) = ' '; 3166 3167 if (bfd_write (&hdr, sizeof (struct ar_hdr), abfd) != sizeof (struct ar_hdr)) 3168 return false; 3169 3170 H_PUT_32 (abfd, hashsize, temp); 3171 if (bfd_write (temp, 4, abfd) != 4) 3172 return false; 3173 3174 hashtable = (bfd_byte *) bfd_zalloc (abfd, symdefsize); 3175 if (!hashtable) 3176 return false; 3177 3178 current = abfd->archive_head; 3179 last_elt = current; 3180 for (i = 0; i < orl_count; i++) 3181 { 3182 unsigned int hash, rehash = 0; 3183 3184 /* Advance firstreal to the file position of this archive 3185 element. */ 3186 if (map[i].u.abfd != last_elt) 3187 { 3188 do 3189 { 3190 firstreal += arelt_size (current) + sizeof (struct ar_hdr); 3191 firstreal += firstreal % 2; 3192 current = current->archive_next; 3193 } 3194 while (current != map[i].u.abfd); 3195 } 3196 3197 last_elt = current; 3198 3199 hash = ecoff_armap_hash (*map[i].name, &rehash, hashsize, hashlog); 3200 if (H_GET_32 (abfd, (hashtable + (hash * 8) + 4)) != 0) 3201 { 3202 unsigned int srch; 3203 3204 /* The desired slot is already taken. */ 3205 for (srch = (hash + rehash) & (hashsize - 1); 3206 srch != hash; 3207 srch = (srch + rehash) & (hashsize - 1)) 3208 if (H_GET_32 (abfd, (hashtable + (srch * 8) + 4)) == 0) 3209 break; 3210 3211 BFD_ASSERT (srch != hash); 3212 3213 hash = srch; 3214 } 3215 3216 H_PUT_32 (abfd, map[i].namidx, (hashtable + hash * 8)); 3217 H_PUT_32 (abfd, firstreal, (hashtable + hash * 8 + 4)); 3218 } 3219 3220 if (bfd_write (hashtable, symdefsize, abfd) != symdefsize) 3221 return false; 3222 3223 bfd_release (abfd, hashtable); 3224 3225 /* Now write the strings. */ 3226 H_PUT_32 (abfd, stringsize, temp); 3227 if (bfd_write (temp, 4, abfd) != 4) 3228 return false; 3229 for (i = 0; i < orl_count; i++) 3230 { 3231 bfd_size_type len; 3232 3233 len = strlen (*map[i].name) + 1; 3234 if (bfd_write (*map[i].name, len, abfd) != len) 3235 return false; 3236 } 3237 3238 /* The spec sez this should be a newline. But in order to be 3239 bug-compatible for DECstation ar we use a null. */ 3240 if (padit) 3241 { 3242 if (bfd_write ("", 1, abfd) != 1) 3243 return false; 3244 } 3245 3246 return true; 3247 } 3248 3249 /* ECOFF linker code. */ 3250 3251 /* Routine to create an entry in an ECOFF link hash table. */ 3252 3253 static struct bfd_hash_entry * 3254 ecoff_link_hash_newfunc (struct bfd_hash_entry *entry, 3255 struct bfd_hash_table *table, 3256 const char *string) 3257 { 3258 struct ecoff_link_hash_entry *ret = (struct ecoff_link_hash_entry *) entry; 3259 3260 /* Allocate the structure if it has not already been allocated by a 3261 subclass. */ 3262 if (ret == NULL) 3263 ret = ((struct ecoff_link_hash_entry *) 3264 bfd_hash_allocate (table, sizeof (struct ecoff_link_hash_entry))); 3265 if (ret == NULL) 3266 return NULL; 3267 3268 /* Call the allocation method of the superclass. */ 3269 ret = ((struct ecoff_link_hash_entry *) 3270 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, 3271 table, string)); 3272 3273 if (ret) 3274 { 3275 /* Set local fields. */ 3276 ret->indx = -1; 3277 ret->abfd = NULL; 3278 ret->written = 0; 3279 ret->small = 0; 3280 } 3281 memset ((void *) &ret->esym, 0, sizeof ret->esym); 3282 3283 return (struct bfd_hash_entry *) ret; 3284 } 3285 3286 /* Create an ECOFF link hash table. */ 3287 3288 struct bfd_link_hash_table * 3289 _bfd_ecoff_bfd_link_hash_table_create (bfd *abfd) 3290 { 3291 struct ecoff_link_hash_table *ret; 3292 size_t amt = sizeof (struct ecoff_link_hash_table); 3293 3294 ret = (struct ecoff_link_hash_table *) bfd_malloc (amt); 3295 if (ret == NULL) 3296 return NULL; 3297 if (!_bfd_link_hash_table_init (&ret->root, abfd, 3298 ecoff_link_hash_newfunc, 3299 sizeof (struct ecoff_link_hash_entry))) 3300 { 3301 free (ret); 3302 return NULL; 3303 } 3304 return &ret->root; 3305 } 3306 3307 /* Look up an entry in an ECOFF link hash table. */ 3308 3309 #define ecoff_link_hash_lookup(table, string, create, copy, follow) \ 3310 ((struct ecoff_link_hash_entry *) \ 3311 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow))) 3312 3313 /* Get the ECOFF link hash table from the info structure. This is 3314 just a cast. */ 3315 3316 #define ecoff_hash_table(p) ((struct ecoff_link_hash_table *) ((p)->hash)) 3317 3318 /* Add the external symbols of an object file to the global linker 3319 hash table. The external symbols and strings we are passed are 3320 just allocated on the stack, and will be discarded. We must 3321 explicitly save any information we may need later on in the link. 3322 We do not want to read the external symbol information again. */ 3323 3324 static bool 3325 ecoff_link_add_externals (bfd *abfd, 3326 struct bfd_link_info *info, 3327 void * external_ext, 3328 char *ssext) 3329 { 3330 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 3331 void (* const swap_ext_in) (bfd *, void *, EXTR *) 3332 = backend->debug_swap.swap_ext_in; 3333 bfd_size_type external_ext_size = backend->debug_swap.external_ext_size; 3334 unsigned long ext_count; 3335 struct bfd_link_hash_entry **sym_hash; 3336 char *ext_ptr; 3337 char *ext_end; 3338 bfd_size_type amt; 3339 3340 ext_count = ecoff_data (abfd)->debug_info.symbolic_header.iextMax; 3341 3342 amt = ext_count; 3343 amt *= sizeof (struct bfd_link_hash_entry *); 3344 sym_hash = (struct bfd_link_hash_entry **) bfd_alloc (abfd, amt); 3345 if (!sym_hash) 3346 return false; 3347 ecoff_data (abfd)->sym_hashes = (struct ecoff_link_hash_entry **) sym_hash; 3348 3349 ext_ptr = (char *) external_ext; 3350 ext_end = ext_ptr + ext_count * external_ext_size; 3351 for (; ext_ptr < ext_end; ext_ptr += external_ext_size, sym_hash++) 3352 { 3353 EXTR esym; 3354 bool skip; 3355 bfd_vma value; 3356 asection *section; 3357 const char *name; 3358 struct ecoff_link_hash_entry *h; 3359 3360 *sym_hash = NULL; 3361 3362 (*swap_ext_in) (abfd, (void *) ext_ptr, &esym); 3363 3364 /* Skip debugging symbols. */ 3365 skip = false; 3366 switch (esym.asym.st) 3367 { 3368 case stGlobal: 3369 case stStatic: 3370 case stLabel: 3371 case stProc: 3372 case stStaticProc: 3373 break; 3374 default: 3375 skip = true; 3376 break; 3377 } 3378 3379 if (skip) 3380 continue; 3381 3382 /* Get the information for this symbol. */ 3383 value = esym.asym.value; 3384 switch (esym.asym.sc) 3385 { 3386 default: 3387 case scNil: 3388 case scRegister: 3389 case scCdbLocal: 3390 case scBits: 3391 case scCdbSystem: 3392 case scRegImage: 3393 case scInfo: 3394 case scUserStruct: 3395 case scVar: 3396 case scVarRegister: 3397 case scVariant: 3398 case scBasedVar: 3399 case scXData: 3400 case scPData: 3401 section = NULL; 3402 break; 3403 case scText: 3404 section = bfd_make_section_old_way (abfd, _TEXT); 3405 value -= section->vma; 3406 break; 3407 case scData: 3408 section = bfd_make_section_old_way (abfd, _DATA); 3409 value -= section->vma; 3410 break; 3411 case scBss: 3412 section = bfd_make_section_old_way (abfd, _BSS); 3413 value -= section->vma; 3414 break; 3415 case scAbs: 3416 section = bfd_abs_section_ptr; 3417 break; 3418 case scUndefined: 3419 section = bfd_und_section_ptr; 3420 break; 3421 case scSData: 3422 section = bfd_make_section_old_way (abfd, _SDATA); 3423 value -= section->vma; 3424 break; 3425 case scSBss: 3426 section = bfd_make_section_old_way (abfd, _SBSS); 3427 value -= section->vma; 3428 break; 3429 case scRData: 3430 section = bfd_make_section_old_way (abfd, _RDATA); 3431 value -= section->vma; 3432 break; 3433 case scCommon: 3434 if (value > ecoff_data (abfd)->gp_size) 3435 { 3436 section = bfd_com_section_ptr; 3437 break; 3438 } 3439 /* Fall through. */ 3440 case scSCommon: 3441 section = &ecoff_scom_section; 3442 break; 3443 case scSUndefined: 3444 section = bfd_und_section_ptr; 3445 break; 3446 case scInit: 3447 section = bfd_make_section_old_way (abfd, _INIT); 3448 value -= section->vma; 3449 break; 3450 case scFini: 3451 section = bfd_make_section_old_way (abfd, _FINI); 3452 value -= section->vma; 3453 break; 3454 case scRConst: 3455 section = bfd_make_section_old_way (abfd, _RCONST); 3456 value -= section->vma; 3457 break; 3458 } 3459 3460 if (section == NULL) 3461 continue; 3462 3463 name = ssext + esym.asym.iss; 3464 3465 if (! (_bfd_generic_link_add_one_symbol 3466 (info, abfd, name, 3467 (flagword) (esym.weakext ? BSF_WEAK : BSF_GLOBAL), 3468 section, value, NULL, true, true, sym_hash))) 3469 return false; 3470 3471 h = (struct ecoff_link_hash_entry *) *sym_hash; 3472 3473 /* If we are building an ECOFF hash table, save the external 3474 symbol information. */ 3475 if (bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd)) 3476 { 3477 if (h->abfd == NULL 3478 || (! bfd_is_und_section (section) 3479 && (! bfd_is_com_section (section) 3480 || (h->root.type != bfd_link_hash_defined 3481 && h->root.type != bfd_link_hash_defweak)))) 3482 { 3483 h->abfd = abfd; 3484 h->esym = esym; 3485 } 3486 3487 /* Remember whether this symbol was small undefined. */ 3488 if (esym.asym.sc == scSUndefined) 3489 h->small = 1; 3490 3491 /* If this symbol was ever small undefined, it needs to wind 3492 up in a GP relative section. We can't control the 3493 section of a defined symbol, but we can control the 3494 section of a common symbol. This case is actually needed 3495 on Ultrix 4.2 to handle the symbol cred in -lckrb. */ 3496 if (h->small 3497 && h->root.type == bfd_link_hash_common 3498 && streq (h->root.u.c.p->section->name, SCOMMON)) 3499 { 3500 h->root.u.c.p->section = bfd_make_section_old_way (abfd, 3501 SCOMMON); 3502 h->root.u.c.p->section->flags = SEC_ALLOC; 3503 if (h->esym.asym.sc == scCommon) 3504 h->esym.asym.sc = scSCommon; 3505 } 3506 } 3507 } 3508 3509 return true; 3510 } 3511 3512 /* Add symbols from an ECOFF object file to the global linker hash 3513 table. */ 3514 3515 static bool 3516 ecoff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) 3517 { 3518 HDRR *symhdr; 3519 bfd_size_type external_ext_size; 3520 void * external_ext = NULL; 3521 bfd_size_type esize; 3522 char *ssext = NULL; 3523 bool result; 3524 3525 if (! ecoff_slurp_symbolic_header (abfd)) 3526 return false; 3527 3528 /* If there are no symbols, we don't want it. */ 3529 if (bfd_get_symcount (abfd) == 0) 3530 return true; 3531 3532 symhdr = &ecoff_data (abfd)->debug_info.symbolic_header; 3533 3534 /* Read in the external symbols and external strings. */ 3535 if (bfd_seek (abfd, symhdr->cbExtOffset, SEEK_SET) != 0) 3536 return false; 3537 external_ext_size = ecoff_backend (abfd)->debug_swap.external_ext_size; 3538 esize = symhdr->iextMax * external_ext_size; 3539 external_ext = _bfd_malloc_and_read (abfd, esize, esize); 3540 if (external_ext == NULL && esize != 0) 3541 goto error_return; 3542 3543 if (bfd_seek (abfd, symhdr->cbSsExtOffset, SEEK_SET) != 0) 3544 goto error_return; 3545 ssext = (char *) _bfd_malloc_and_read (abfd, symhdr->issExtMax, 3546 symhdr->issExtMax); 3547 if (ssext == NULL && symhdr->issExtMax != 0) 3548 goto error_return; 3549 3550 result = ecoff_link_add_externals (abfd, info, external_ext, ssext); 3551 3552 free (ssext); 3553 free (external_ext); 3554 return result; 3555 3556 error_return: 3557 free (ssext); 3558 free (external_ext); 3559 return false; 3560 } 3561 3562 /* This is called if we used _bfd_generic_link_add_archive_symbols 3563 because we were not dealing with an ECOFF archive. */ 3564 3565 static bool 3566 ecoff_link_check_archive_element (bfd *abfd, 3567 struct bfd_link_info *info, 3568 struct bfd_link_hash_entry *h, 3569 const char *name, 3570 bool *pneeded) 3571 { 3572 *pneeded = false; 3573 3574 /* Unlike the generic linker, we do not pull in elements because 3575 of common symbols. */ 3576 if (h->type != bfd_link_hash_undefined) 3577 return true; 3578 3579 /* Include this element? */ 3580 if (!(*info->callbacks->add_archive_element) (info, abfd, name, &abfd)) 3581 return true; 3582 *pneeded = true; 3583 3584 return ecoff_link_add_object_symbols (abfd, info); 3585 } 3586 3587 /* Add the symbols from an archive file to the global hash table. 3588 This looks through the undefined symbols, looks each one up in the 3589 archive hash table, and adds any associated object file. We do not 3590 use _bfd_generic_link_add_archive_symbols because ECOFF archives 3591 already have a hash table, so there is no reason to construct 3592 another one. */ 3593 3594 static bool 3595 ecoff_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) 3596 { 3597 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 3598 const bfd_byte *raw_armap; 3599 struct bfd_link_hash_entry **pundef; 3600 unsigned int armap_count; 3601 unsigned int armap_log; 3602 unsigned int i; 3603 const bfd_byte *hashtable; 3604 const char *stringbase; 3605 3606 if (! bfd_has_map (abfd)) 3607 { 3608 /* An empty archive is a special case. */ 3609 if (bfd_openr_next_archived_file (abfd, NULL) == NULL) 3610 return true; 3611 bfd_set_error (bfd_error_no_armap); 3612 return false; 3613 } 3614 3615 /* If we don't have any raw data for this archive, as can happen on 3616 Irix 4.0.5F, we call the generic routine. 3617 FIXME: We should be more clever about this, since someday tdata 3618 may get to something for a generic archive. */ 3619 raw_armap = (const bfd_byte *) bfd_ardata (abfd)->tdata; 3620 if (raw_armap == NULL) 3621 return (_bfd_generic_link_add_archive_symbols 3622 (abfd, info, ecoff_link_check_archive_element)); 3623 3624 armap_count = H_GET_32 (abfd, raw_armap); 3625 3626 armap_log = 0; 3627 for (i = 1; i < armap_count; i <<= 1) 3628 armap_log++; 3629 BFD_ASSERT (i == armap_count); 3630 3631 hashtable = raw_armap + 4; 3632 stringbase = (const char *) raw_armap + armap_count * 8 + 8; 3633 3634 /* Look through the list of undefined symbols. */ 3635 pundef = &info->hash->undefs; 3636 while (*pundef != NULL) 3637 { 3638 struct bfd_link_hash_entry *h; 3639 unsigned int hash, rehash = 0; 3640 unsigned int file_offset; 3641 const char *name; 3642 bfd *element; 3643 3644 h = *pundef; 3645 3646 /* When a symbol is defined, it is not necessarily removed from 3647 the list. */ 3648 if (h->type != bfd_link_hash_undefined 3649 && h->type != bfd_link_hash_common) 3650 { 3651 /* Remove this entry from the list, for general cleanliness 3652 and because we are going to look through the list again 3653 if we search any more libraries. We can't remove the 3654 entry if it is the tail, because that would lose any 3655 entries we add to the list later on. */ 3656 if (*pundef != info->hash->undefs_tail) 3657 *pundef = (*pundef)->u.undef.next; 3658 else 3659 pundef = &(*pundef)->u.undef.next; 3660 continue; 3661 } 3662 3663 /* Native ECOFF linkers do not pull in archive elements merely 3664 to satisfy common definitions, so neither do we. We leave 3665 them on the list, though, in case we are linking against some 3666 other object format. */ 3667 if (h->type != bfd_link_hash_undefined) 3668 { 3669 pundef = &(*pundef)->u.undef.next; 3670 continue; 3671 } 3672 3673 /* Look for this symbol in the archive hash table. */ 3674 hash = ecoff_armap_hash (h->root.string, &rehash, armap_count, 3675 armap_log); 3676 3677 file_offset = H_GET_32 (abfd, hashtable + (hash * 8) + 4); 3678 if (file_offset == 0) 3679 { 3680 /* Nothing in this slot. */ 3681 pundef = &(*pundef)->u.undef.next; 3682 continue; 3683 } 3684 3685 name = stringbase + H_GET_32 (abfd, hashtable + (hash * 8)); 3686 if (name[0] != h->root.string[0] 3687 || ! streq (name, h->root.string)) 3688 { 3689 unsigned int srch; 3690 bool found; 3691 3692 /* That was the wrong symbol. Try rehashing. */ 3693 found = false; 3694 for (srch = (hash + rehash) & (armap_count - 1); 3695 srch != hash; 3696 srch = (srch + rehash) & (armap_count - 1)) 3697 { 3698 file_offset = H_GET_32 (abfd, hashtable + (srch * 8) + 4); 3699 if (file_offset == 0) 3700 break; 3701 name = stringbase + H_GET_32 (abfd, hashtable + (srch * 8)); 3702 if (name[0] == h->root.string[0] 3703 && streq (name, h->root.string)) 3704 { 3705 found = true; 3706 break; 3707 } 3708 } 3709 3710 if (! found) 3711 { 3712 pundef = &(*pundef)->u.undef.next; 3713 continue; 3714 } 3715 3716 hash = srch; 3717 } 3718 3719 element = (*backend->get_elt_at_filepos) (abfd, 3720 (file_ptr) file_offset, 3721 info); 3722 if (element == NULL) 3723 return false; 3724 3725 if (! bfd_check_format (element, bfd_object)) 3726 return false; 3727 3728 /* Unlike the generic linker, we know that this element provides 3729 a definition for an undefined symbol and we know that we want 3730 to include it. We don't need to check anything. */ 3731 if (!(*info->callbacks 3732 ->add_archive_element) (info, element, name, &element)) 3733 return false; 3734 if (! ecoff_link_add_object_symbols (element, info)) 3735 return false; 3736 3737 pundef = &(*pundef)->u.undef.next; 3738 } 3739 3740 return true; 3741 } 3742 3743 /* Given an ECOFF BFD, add symbols to the global hash table as 3744 appropriate. */ 3745 3746 bool 3747 _bfd_ecoff_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) 3748 { 3749 switch (bfd_get_format (abfd)) 3750 { 3751 case bfd_object: 3752 return ecoff_link_add_object_symbols (abfd, info); 3753 case bfd_archive: 3754 return ecoff_link_add_archive_symbols (abfd, info); 3755 default: 3756 bfd_set_error (bfd_error_wrong_format); 3757 return false; 3758 } 3759 } 3760 3761 3762 /* ECOFF final link routines. */ 3763 3764 /* Structure used to pass information to ecoff_link_write_external. */ 3765 3766 struct extsym_info 3767 { 3768 bfd *abfd; 3769 struct bfd_link_info *info; 3770 }; 3771 3772 /* Accumulate the debugging information for an input BFD into the 3773 output BFD. This must read in the symbolic information of the 3774 input BFD. */ 3775 3776 static bool 3777 ecoff_final_link_debug_accumulate (bfd *output_bfd, 3778 bfd *input_bfd, 3779 struct bfd_link_info *info, 3780 void * handle) 3781 { 3782 struct ecoff_debug_info * const debug = &ecoff_data (input_bfd)->debug_info; 3783 const struct ecoff_debug_swap * const swap = 3784 &ecoff_backend (input_bfd)->debug_swap; 3785 HDRR *symhdr = &debug->symbolic_header; 3786 bool ret; 3787 3788 #define READ(ptr, offset, count, size) \ 3789 do \ 3790 { \ 3791 size_t amt; \ 3792 debug->ptr = NULL; \ 3793 if (symhdr->count == 0) \ 3794 break; \ 3795 if (_bfd_mul_overflow (size, symhdr->count, &amt)) \ 3796 { \ 3797 bfd_set_error (bfd_error_file_too_big); \ 3798 ret = false; \ 3799 goto return_something; \ 3800 } \ 3801 if (bfd_seek (input_bfd, symhdr->offset, SEEK_SET) != 0) \ 3802 { \ 3803 ret = false; \ 3804 goto return_something; \ 3805 } \ 3806 debug->ptr = _bfd_malloc_and_read (input_bfd, amt + 1, amt); \ 3807 if (debug->ptr == NULL) \ 3808 { \ 3809 ret = false; \ 3810 goto return_something; \ 3811 } \ 3812 ((char *) debug->ptr)[amt] = 0; \ 3813 } while (0) 3814 3815 /* If alloc_syments is true, then the data was already by read by 3816 _bfd_ecoff_slurp_symbolic_info. */ 3817 if (!debug->alloc_syments) 3818 { 3819 READ (line, cbLineOffset, cbLine, sizeof (unsigned char)); 3820 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size); 3821 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size); 3822 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size); 3823 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size); 3824 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext)); 3825 READ (ss, cbSsOffset, issMax, sizeof (char)); 3826 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size); 3827 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size); 3828 } 3829 #undef READ 3830 3831 /* We do not read the external strings or the external symbols. */ 3832 3833 ret = (bfd_ecoff_debug_accumulate 3834 (handle, output_bfd, &ecoff_data (output_bfd)->debug_info, 3835 &ecoff_backend (output_bfd)->debug_swap, 3836 input_bfd, debug, swap, info)); 3837 3838 return_something: 3839 _bfd_ecoff_free_ecoff_debug_info (debug); 3840 return ret; 3841 } 3842 3843 /* Relocate and write an ECOFF section into an ECOFF output file. */ 3844 3845 static bool 3846 ecoff_indirect_link_order (bfd *output_bfd, 3847 struct bfd_link_info *info, 3848 asection *output_section, 3849 struct bfd_link_order *link_order) 3850 { 3851 asection *input_section; 3852 bfd *input_bfd; 3853 bfd_byte *contents = NULL; 3854 bfd_size_type external_reloc_size; 3855 bfd_size_type external_relocs_size; 3856 void * external_relocs = NULL; 3857 3858 BFD_ASSERT ((output_section->flags & SEC_HAS_CONTENTS) != 0); 3859 3860 input_section = link_order->u.indirect.section; 3861 input_bfd = input_section->owner; 3862 if (input_section->size == 0) 3863 return true; 3864 3865 BFD_ASSERT (input_section->output_section == output_section); 3866 BFD_ASSERT (input_section->output_offset == link_order->offset); 3867 BFD_ASSERT (input_section->size == link_order->size); 3868 3869 /* Get the section contents. */ 3870 if (!bfd_malloc_and_get_section (input_bfd, input_section, &contents)) 3871 goto error_return; 3872 3873 /* Get the relocs. If we are relaxing MIPS code, they will already 3874 have been read in. Otherwise, we read them in now. */ 3875 external_reloc_size = ecoff_backend (input_bfd)->external_reloc_size; 3876 external_relocs_size = external_reloc_size * input_section->reloc_count; 3877 3878 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0) 3879 goto error_return; 3880 external_relocs = _bfd_malloc_and_read (input_bfd, external_relocs_size, 3881 external_relocs_size); 3882 if (external_relocs == NULL && external_relocs_size != 0) 3883 goto error_return; 3884 3885 /* Relocate the section contents. */ 3886 if (! ((*ecoff_backend (input_bfd)->relocate_section) 3887 (output_bfd, info, input_bfd, input_section, contents, 3888 external_relocs))) 3889 goto error_return; 3890 3891 /* Write out the relocated section. */ 3892 if (! bfd_set_section_contents (output_bfd, 3893 output_section, 3894 contents, 3895 input_section->output_offset, 3896 input_section->size)) 3897 goto error_return; 3898 3899 /* If we are producing relocatable output, the relocs were 3900 modified, and we write them out now. We use the reloc_count 3901 field of output_section to keep track of the number of relocs we 3902 have output so far. */ 3903 if (bfd_link_relocatable (info)) 3904 { 3905 file_ptr pos = (output_section->rel_filepos 3906 + output_section->reloc_count * external_reloc_size); 3907 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0 3908 || (bfd_write (external_relocs, external_relocs_size, output_bfd) 3909 != external_relocs_size)) 3910 goto error_return; 3911 output_section->reloc_count += input_section->reloc_count; 3912 } 3913 3914 free (contents); 3915 free (external_relocs); 3916 return true; 3917 3918 error_return: 3919 free (contents); 3920 free (external_relocs); 3921 return false; 3922 } 3923 3924 /* Generate a reloc when linking an ECOFF file. This is a reloc 3925 requested by the linker, and does come from any input file. This 3926 is used to build constructor and destructor tables when linking 3927 with -Ur. */ 3928 3929 static bool 3930 ecoff_reloc_link_order (bfd *output_bfd, 3931 struct bfd_link_info *info, 3932 asection *output_section, 3933 struct bfd_link_order *link_order) 3934 { 3935 enum bfd_link_order_type type; 3936 asection *section; 3937 bfd_vma addend; 3938 arelent rel; 3939 struct internal_reloc in; 3940 bfd_size_type external_reloc_size; 3941 bfd_byte *rbuf; 3942 bool ok; 3943 file_ptr pos; 3944 3945 type = link_order->type; 3946 section = NULL; 3947 addend = link_order->u.reloc.p->addend; 3948 3949 /* We set up an arelent to pass to the backend adjust_reloc_out 3950 routine. */ 3951 rel.address = link_order->offset; 3952 3953 rel.howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); 3954 if (rel.howto == 0) 3955 { 3956 bfd_set_error (bfd_error_bad_value); 3957 return false; 3958 } 3959 3960 if (type == bfd_section_reloc_link_order) 3961 { 3962 section = link_order->u.reloc.p->u.section; 3963 rel.sym_ptr_ptr = section->symbol_ptr_ptr; 3964 } 3965 else 3966 { 3967 struct bfd_link_hash_entry *h; 3968 3969 /* Treat a reloc against a defined symbol as though it were 3970 actually against the section. */ 3971 h = bfd_wrapped_link_hash_lookup (output_bfd, info, 3972 link_order->u.reloc.p->u.name, 3973 false, false, false); 3974 if (h != NULL 3975 && (h->type == bfd_link_hash_defined 3976 || h->type == bfd_link_hash_defweak)) 3977 { 3978 type = bfd_section_reloc_link_order; 3979 section = h->u.def.section->output_section; 3980 /* It seems that we ought to add the symbol value to the 3981 addend here, but in practice it has already been added 3982 because it was passed to constructor_callback. */ 3983 addend += section->vma + h->u.def.section->output_offset; 3984 } 3985 else 3986 { 3987 /* We can't set up a reloc against a symbol correctly, 3988 because we have no asymbol structure. Currently no 3989 adjust_reloc_out routine cares. */ 3990 rel.sym_ptr_ptr = NULL; 3991 } 3992 } 3993 3994 /* All ECOFF relocs are in-place. Put the addend into the object 3995 file. */ 3996 3997 BFD_ASSERT (rel.howto->partial_inplace); 3998 if (addend != 0) 3999 { 4000 bfd_size_type size; 4001 bfd_reloc_status_type rstat; 4002 bfd_byte *buf; 4003 4004 size = bfd_get_reloc_size (rel.howto); 4005 buf = (bfd_byte *) bfd_zmalloc (size); 4006 if (buf == NULL && size != 0) 4007 return false; 4008 rstat = _bfd_relocate_contents (rel.howto, output_bfd, 4009 (bfd_vma) addend, buf); 4010 switch (rstat) 4011 { 4012 case bfd_reloc_ok: 4013 break; 4014 default: 4015 case bfd_reloc_outofrange: 4016 abort (); 4017 case bfd_reloc_overflow: 4018 (*info->callbacks->reloc_overflow) 4019 (info, NULL, 4020 (link_order->type == bfd_section_reloc_link_order 4021 ? bfd_section_name (section) 4022 : link_order->u.reloc.p->u.name), 4023 rel.howto->name, addend, NULL, NULL, (bfd_vma) 0); 4024 break; 4025 } 4026 ok = bfd_set_section_contents (output_bfd, output_section, (void *) buf, 4027 (file_ptr) link_order->offset, size); 4028 free (buf); 4029 if (! ok) 4030 return false; 4031 } 4032 4033 rel.addend = 0; 4034 4035 /* Move the information into an internal_reloc structure. */ 4036 in.r_vaddr = rel.address + bfd_section_vma (output_section); 4037 in.r_type = rel.howto->type; 4038 4039 if (type == bfd_symbol_reloc_link_order) 4040 { 4041 struct ecoff_link_hash_entry *h; 4042 4043 h = ((struct ecoff_link_hash_entry *) 4044 bfd_wrapped_link_hash_lookup (output_bfd, info, 4045 link_order->u.reloc.p->u.name, 4046 false, false, true)); 4047 if (h != NULL 4048 && h->indx != -1) 4049 in.r_symndx = h->indx; 4050 else 4051 { 4052 (*info->callbacks->unattached_reloc) 4053 (info, link_order->u.reloc.p->u.name, NULL, NULL, (bfd_vma) 0); 4054 in.r_symndx = 0; 4055 } 4056 in.r_extern = 1; 4057 } 4058 else 4059 { 4060 const char *name; 4061 unsigned int i; 4062 static struct 4063 { 4064 const char * name; 4065 long r_symndx; 4066 } 4067 section_symndx [] = 4068 { 4069 { _TEXT, RELOC_SECTION_TEXT }, 4070 { _RDATA, RELOC_SECTION_RDATA }, 4071 { _DATA, RELOC_SECTION_DATA }, 4072 { _SDATA, RELOC_SECTION_SDATA }, 4073 { _SBSS, RELOC_SECTION_SBSS }, 4074 { _BSS, RELOC_SECTION_BSS }, 4075 { _INIT, RELOC_SECTION_INIT }, 4076 { _LIT8, RELOC_SECTION_LIT8 }, 4077 { _LIT4, RELOC_SECTION_LIT4 }, 4078 { _XDATA, RELOC_SECTION_XDATA }, 4079 { _PDATA, RELOC_SECTION_PDATA }, 4080 { _FINI, RELOC_SECTION_FINI }, 4081 { _LITA, RELOC_SECTION_LITA }, 4082 { "*ABS*", RELOC_SECTION_ABS }, 4083 { _RCONST, RELOC_SECTION_RCONST } 4084 }; 4085 4086 name = bfd_section_name (section); 4087 4088 for (i = 0; i < ARRAY_SIZE (section_symndx); i++) 4089 if (streq (name, section_symndx[i].name)) 4090 { 4091 in.r_symndx = section_symndx[i].r_symndx; 4092 break; 4093 } 4094 4095 if (i == ARRAY_SIZE (section_symndx)) 4096 abort (); 4097 4098 in.r_extern = 0; 4099 } 4100 4101 /* Let the BFD backend adjust the reloc. */ 4102 (*ecoff_backend (output_bfd)->adjust_reloc_out) (output_bfd, &rel, &in); 4103 4104 /* Get some memory and swap out the reloc. */ 4105 external_reloc_size = ecoff_backend (output_bfd)->external_reloc_size; 4106 rbuf = (bfd_byte *) bfd_malloc (external_reloc_size); 4107 if (rbuf == NULL) 4108 return false; 4109 4110 (*ecoff_backend (output_bfd)->swap_reloc_out) (output_bfd, &in, (void *) rbuf); 4111 4112 pos = (output_section->rel_filepos 4113 + output_section->reloc_count * external_reloc_size); 4114 ok = (bfd_seek (output_bfd, pos, SEEK_SET) == 0 4115 && (bfd_write (rbuf, external_reloc_size, output_bfd) 4116 == external_reloc_size)); 4117 4118 if (ok) 4119 ++output_section->reloc_count; 4120 4121 free (rbuf); 4122 4123 return ok; 4124 } 4125 4126 /* Put out information for an external symbol. These come only from 4127 the hash table. */ 4128 4129 static bool 4130 ecoff_link_write_external (struct bfd_hash_entry *bh, void * data) 4131 { 4132 struct ecoff_link_hash_entry *h = (struct ecoff_link_hash_entry *) bh; 4133 struct extsym_info *einfo = (struct extsym_info *) data; 4134 bfd *output_bfd = einfo->abfd; 4135 bool strip; 4136 4137 if (h->root.type == bfd_link_hash_warning) 4138 { 4139 h = (struct ecoff_link_hash_entry *) h->root.u.i.link; 4140 if (h->root.type == bfd_link_hash_new) 4141 return true; 4142 } 4143 4144 /* We need to check if this symbol is being stripped. */ 4145 if (h->root.type == bfd_link_hash_undefined 4146 || h->root.type == bfd_link_hash_undefweak) 4147 strip = false; 4148 else if (einfo->info->strip == strip_all 4149 || (einfo->info->strip == strip_some 4150 && bfd_hash_lookup (einfo->info->keep_hash, 4151 h->root.root.string, 4152 false, false) == NULL)) 4153 strip = true; 4154 else 4155 strip = false; 4156 4157 if (strip || h->written) 4158 return true; 4159 4160 if (h->abfd == NULL) 4161 { 4162 h->esym.jmptbl = 0; 4163 h->esym.cobol_main = 0; 4164 h->esym.weakext = 0; 4165 h->esym.reserved = 0; 4166 h->esym.ifd = ifdNil; 4167 h->esym.asym.value = 0; 4168 h->esym.asym.st = stGlobal; 4169 4170 if (h->root.type != bfd_link_hash_defined 4171 && h->root.type != bfd_link_hash_defweak) 4172 h->esym.asym.sc = scAbs; 4173 else 4174 { 4175 asection *output_section; 4176 const char *name; 4177 unsigned int i; 4178 static struct 4179 { 4180 const char * name; 4181 int sc; 4182 } 4183 section_storage_classes [] = 4184 { 4185 { _TEXT, scText }, 4186 { _DATA, scData }, 4187 { _SDATA, scSData }, 4188 { _RDATA, scRData }, 4189 { _BSS, scBss }, 4190 { _SBSS, scSBss }, 4191 { _INIT, scInit }, 4192 { _FINI, scFini }, 4193 { _PDATA, scPData }, 4194 { _XDATA, scXData }, 4195 { _RCONST, scRConst } 4196 }; 4197 4198 output_section = h->root.u.def.section->output_section; 4199 name = bfd_section_name (output_section); 4200 4201 for (i = 0; i < ARRAY_SIZE (section_storage_classes); i++) 4202 if (streq (name, section_storage_classes[i].name)) 4203 { 4204 h->esym.asym.sc = section_storage_classes[i].sc; 4205 break; 4206 } 4207 4208 if (i == ARRAY_SIZE (section_storage_classes)) 4209 h->esym.asym.sc = scAbs; 4210 } 4211 4212 h->esym.asym.reserved = 0; 4213 h->esym.asym.index = indexNil; 4214 } 4215 else if (h->esym.ifd != -1) 4216 { 4217 struct ecoff_debug_info *debug; 4218 4219 /* Adjust the FDR index for the symbol by that used for the 4220 input BFD. */ 4221 debug = &ecoff_data (h->abfd)->debug_info; 4222 BFD_ASSERT (h->esym.ifd >= 0 4223 && h->esym.ifd < debug->symbolic_header.ifdMax); 4224 h->esym.ifd = debug->ifdmap[h->esym.ifd]; 4225 } 4226 4227 switch (h->root.type) 4228 { 4229 default: 4230 case bfd_link_hash_warning: 4231 case bfd_link_hash_new: 4232 abort (); 4233 case bfd_link_hash_undefined: 4234 case bfd_link_hash_undefweak: 4235 if (h->esym.asym.sc != scUndefined 4236 && h->esym.asym.sc != scSUndefined) 4237 h->esym.asym.sc = scUndefined; 4238 break; 4239 case bfd_link_hash_defined: 4240 case bfd_link_hash_defweak: 4241 if (h->esym.asym.sc == scUndefined 4242 || h->esym.asym.sc == scSUndefined) 4243 h->esym.asym.sc = scAbs; 4244 else if (h->esym.asym.sc == scCommon) 4245 h->esym.asym.sc = scBss; 4246 else if (h->esym.asym.sc == scSCommon) 4247 h->esym.asym.sc = scSBss; 4248 h->esym.asym.value = (h->root.u.def.value 4249 + h->root.u.def.section->output_section->vma 4250 + h->root.u.def.section->output_offset); 4251 break; 4252 case bfd_link_hash_common: 4253 if (h->esym.asym.sc != scCommon 4254 && h->esym.asym.sc != scSCommon) 4255 h->esym.asym.sc = scCommon; 4256 h->esym.asym.value = h->root.u.c.size; 4257 break; 4258 case bfd_link_hash_indirect: 4259 /* We ignore these symbols, since the indirected symbol is 4260 already in the hash table. */ 4261 return true; 4262 } 4263 4264 /* bfd_ecoff_debug_one_external uses iextMax to keep track of the 4265 symbol number. */ 4266 h->indx = ecoff_data (output_bfd)->debug_info.symbolic_header.iextMax; 4267 h->written = 1; 4268 4269 return (bfd_ecoff_debug_one_external 4270 (output_bfd, &ecoff_data (output_bfd)->debug_info, 4271 &ecoff_backend (output_bfd)->debug_swap, h->root.root.string, 4272 &h->esym)); 4273 } 4274 4275 /* ECOFF final link routine. This looks through all the input BFDs 4276 and gathers together all the debugging information, and then 4277 processes all the link order information. This may cause it to 4278 close and reopen some input BFDs; I'll see how bad this is. */ 4279 4280 bool 4281 _bfd_ecoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info) 4282 { 4283 const struct ecoff_backend_data * const backend = ecoff_backend (abfd); 4284 struct ecoff_debug_info * const debug = &ecoff_data (abfd)->debug_info; 4285 HDRR *symhdr; 4286 void * handle; 4287 bfd *input_bfd; 4288 asection *o; 4289 struct bfd_link_order *p; 4290 struct extsym_info einfo; 4291 4292 /* We accumulate the debugging information counts in the symbolic 4293 header. */ 4294 symhdr = &debug->symbolic_header; 4295 symhdr->vstamp = 0; 4296 symhdr->ilineMax = 0; 4297 symhdr->cbLine = 0; 4298 symhdr->idnMax = 0; 4299 symhdr->ipdMax = 0; 4300 symhdr->isymMax = 0; 4301 symhdr->ioptMax = 0; 4302 symhdr->iauxMax = 0; 4303 symhdr->issMax = 0; 4304 symhdr->issExtMax = 0; 4305 symhdr->ifdMax = 0; 4306 symhdr->crfd = 0; 4307 symhdr->iextMax = 0; 4308 4309 /* We accumulate the debugging information itself in the debug_info 4310 structure. */ 4311 debug->line = NULL; 4312 debug->external_dnr = NULL; 4313 debug->external_pdr = NULL; 4314 debug->external_sym = NULL; 4315 debug->external_opt = NULL; 4316 debug->external_aux = NULL; 4317 debug->ss = NULL; 4318 debug->ssext = debug->ssext_end = NULL; 4319 debug->external_fdr = NULL; 4320 debug->external_rfd = NULL; 4321 debug->external_ext = debug->external_ext_end = NULL; 4322 4323 handle = bfd_ecoff_debug_init (abfd, debug, &backend->debug_swap, info); 4324 if (handle == NULL) 4325 return false; 4326 4327 /* Accumulate the debugging symbols from each input BFD. */ 4328 for (input_bfd = info->input_bfds; 4329 input_bfd != NULL; 4330 input_bfd = input_bfd->link.next) 4331 { 4332 bool ret; 4333 4334 if (bfd_get_flavour (input_bfd) == bfd_target_ecoff_flavour) 4335 { 4336 /* Arbitrarily set the symbolic header vstamp to the vstamp 4337 of the first object file in the link. */ 4338 if (symhdr->vstamp == 0) 4339 symhdr->vstamp 4340 = ecoff_data (input_bfd)->debug_info.symbolic_header.vstamp; 4341 ret = ecoff_final_link_debug_accumulate (abfd, input_bfd, info, 4342 handle); 4343 } 4344 else 4345 ret = bfd_ecoff_debug_accumulate_other (handle, abfd, 4346 debug, &backend->debug_swap, 4347 input_bfd, info); 4348 if (! ret) 4349 return false; 4350 4351 /* Combine the register masks. */ 4352 ecoff_data (abfd)->gprmask |= ecoff_data (input_bfd)->gprmask; 4353 ecoff_data (abfd)->fprmask |= ecoff_data (input_bfd)->fprmask; 4354 ecoff_data (abfd)->cprmask[0] |= ecoff_data (input_bfd)->cprmask[0]; 4355 ecoff_data (abfd)->cprmask[1] |= ecoff_data (input_bfd)->cprmask[1]; 4356 ecoff_data (abfd)->cprmask[2] |= ecoff_data (input_bfd)->cprmask[2]; 4357 ecoff_data (abfd)->cprmask[3] |= ecoff_data (input_bfd)->cprmask[3]; 4358 } 4359 4360 /* Write out the external symbols. */ 4361 einfo.abfd = abfd; 4362 einfo.info = info; 4363 bfd_hash_traverse (&info->hash->table, ecoff_link_write_external, &einfo); 4364 4365 if (bfd_link_relocatable (info)) 4366 { 4367 /* We need to make a pass over the link_orders to count up the 4368 number of relocations we will need to output, so that we know 4369 how much space they will take up. */ 4370 for (o = abfd->sections; o != NULL; o = o->next) 4371 { 4372 o->reloc_count = 0; 4373 for (p = o->map_head.link_order; 4374 p != NULL; 4375 p = p->next) 4376 if (p->type == bfd_indirect_link_order) 4377 o->reloc_count += p->u.indirect.section->reloc_count; 4378 else if (p->type == bfd_section_reloc_link_order 4379 || p->type == bfd_symbol_reloc_link_order) 4380 ++o->reloc_count; 4381 } 4382 } 4383 4384 /* Compute the reloc and symbol file positions. */ 4385 ecoff_compute_reloc_file_positions (abfd); 4386 4387 /* Write out the debugging information. */ 4388 if (! bfd_ecoff_write_accumulated_debug (handle, abfd, debug, 4389 &backend->debug_swap, info, 4390 ecoff_data (abfd)->sym_filepos)) 4391 return false; 4392 4393 bfd_ecoff_debug_free (handle, abfd, debug, &backend->debug_swap, info); 4394 4395 if (bfd_link_relocatable (info)) 4396 { 4397 /* Now reset the reloc_count field of the sections in the output 4398 BFD to 0, so that we can use them to keep track of how many 4399 relocs we have output thus far. */ 4400 for (o = abfd->sections; o != NULL; o = o->next) 4401 o->reloc_count = 0; 4402 } 4403 4404 /* Get a value for the GP register. */ 4405 if (ecoff_data (abfd)->gp == 0) 4406 { 4407 struct bfd_link_hash_entry *h; 4408 4409 h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); 4410 if (h != NULL 4411 && h->type == bfd_link_hash_defined) 4412 ecoff_data (abfd)->gp = (h->u.def.value 4413 + h->u.def.section->output_section->vma 4414 + h->u.def.section->output_offset); 4415 else if (bfd_link_relocatable (info)) 4416 { 4417 bfd_vma lo; 4418 4419 /* Make up a value. */ 4420 lo = (bfd_vma) -1; 4421 for (o = abfd->sections; o != NULL; o = o->next) 4422 { 4423 if (o->vma < lo 4424 && (streq (o->name, _SBSS) 4425 || streq (o->name, _SDATA) 4426 || streq (o->name, _LIT4) 4427 || streq (o->name, _LIT8) 4428 || streq (o->name, _LITA))) 4429 lo = o->vma; 4430 } 4431 ecoff_data (abfd)->gp = lo + 0x8000; 4432 } 4433 else 4434 { 4435 /* If the relocate_section function needs to do a reloc 4436 involving the GP value, it should make a reloc_dangerous 4437 callback to warn that GP is not defined. */ 4438 } 4439 } 4440 4441 for (o = abfd->sections; o != NULL; o = o->next) 4442 { 4443 for (p = o->map_head.link_order; 4444 p != NULL; 4445 p = p->next) 4446 { 4447 if (p->type == bfd_indirect_link_order 4448 && (bfd_get_flavour (p->u.indirect.section->owner) 4449 == bfd_target_ecoff_flavour)) 4450 { 4451 if (! ecoff_indirect_link_order (abfd, info, o, p)) 4452 return false; 4453 } 4454 else if (p->type == bfd_section_reloc_link_order 4455 || p->type == bfd_symbol_reloc_link_order) 4456 { 4457 if (! ecoff_reloc_link_order (abfd, info, o, p)) 4458 return false; 4459 } 4460 else 4461 { 4462 if (! _bfd_default_link_order (abfd, info, o, p)) 4463 return false; 4464 } 4465 } 4466 } 4467 4468 abfd->symcount = symhdr->iextMax + symhdr->isymMax; 4469 4470 ecoff_data (abfd)->linker = true; 4471 4472 return true; 4473 } 4474