| 1 | /* Support for the generic parts of COFF, for BFD. |
| 2 | Copyright 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc. |
| 3 | Written by Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. |
| 22 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ |
| 23 | |
| 24 | /* This file contains COFF code that is not dependent on any |
| 25 | particular COFF target. There is only one version of this file in |
| 26 | libbfd.a, so no target specific code may be put in here. Or, to |
| 27 | put it another way, |
| 28 | |
| 29 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** |
| 30 | |
| 31 | If you need to add some target specific behaviour, add a new hook |
| 32 | function to bfd_coff_backend_data. |
| 33 | |
| 34 | Some of these functions are also called by the ECOFF routines. |
| 35 | Those functions may not use any COFF specific information, such as |
| 36 | coff_data (abfd). */ |
| 37 | |
| 38 | #include "bfd.h" |
| 39 | #include "sysdep.h" |
| 40 | #include "libbfd.h" |
| 41 | #include "coff/internal.h" |
| 42 | #include "libcoff.h" |
| 43 | |
| 44 | static boolean coff_write_symbol PARAMS ((bfd *, asymbol *, |
| 45 | combined_entry_type *, |
| 46 | unsigned int *)); |
| 47 | static boolean coff_write_alien_symbol PARAMS ((bfd *, asymbol *, |
| 48 | unsigned int *)); |
| 49 | static boolean coff_write_native_symbol PARAMS ((bfd *, coff_symbol_type *, |
| 50 | unsigned int *)); |
| 51 | |
| 52 | #define STRING_SIZE_SIZE (4) |
| 53 | |
| 54 | /* Take a section header read from a coff file (in HOST byte order), |
| 55 | and make a BFD "section" out of it. This is used by ECOFF. */ |
| 56 | static boolean |
| 57 | make_a_section_from_file (abfd, hdr, target_index) |
| 58 | bfd *abfd; |
| 59 | struct internal_scnhdr *hdr; |
| 60 | unsigned int target_index; |
| 61 | { |
| 62 | asection *return_section; |
| 63 | char *name; |
| 64 | |
| 65 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ |
| 66 | name = bfd_alloc (abfd, sizeof (hdr->s_name) + 1); |
| 67 | if (name == NULL) |
| 68 | { |
| 69 | bfd_set_error (bfd_error_no_memory); |
| 70 | return false; |
| 71 | } |
| 72 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
| 73 | name[sizeof (hdr->s_name)] = 0; |
| 74 | |
| 75 | return_section = bfd_make_section (abfd, name); |
| 76 | if (return_section == NULL) |
| 77 | return_section = bfd_coff_make_section_hook (abfd, name); |
| 78 | |
| 79 | /* Handle several sections of the same name. For example, if an executable |
| 80 | has two .bss sections, GDB better be able to find both of them |
| 81 | (PR 3562). */ |
| 82 | if (return_section == NULL) |
| 83 | return_section = bfd_make_section_anyway (abfd, name); |
| 84 | |
| 85 | if (return_section == NULL) |
| 86 | return false; |
| 87 | |
| 88 | /* s_paddr is presumed to be = to s_vaddr */ |
| 89 | |
| 90 | return_section->vma = hdr->s_vaddr; |
| 91 | return_section->lma = return_section->vma; |
| 92 | return_section->_raw_size = hdr->s_size; |
| 93 | return_section->filepos = hdr->s_scnptr; |
| 94 | return_section->rel_filepos = hdr->s_relptr; |
| 95 | return_section->reloc_count = hdr->s_nreloc; |
| 96 | |
| 97 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); |
| 98 | |
| 99 | return_section->line_filepos = hdr->s_lnnoptr; |
| 100 | |
| 101 | return_section->lineno_count = hdr->s_nlnno; |
| 102 | return_section->userdata = NULL; |
| 103 | return_section->next = (asection *) NULL; |
| 104 | return_section->flags = bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name); |
| 105 | |
| 106 | return_section->target_index = target_index; |
| 107 | |
| 108 | /* At least on i386-coff, the line number count for a shared library |
| 109 | section must be ignored. */ |
| 110 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) |
| 111 | return_section->lineno_count = 0; |
| 112 | |
| 113 | if (hdr->s_nreloc != 0) |
| 114 | return_section->flags |= SEC_RELOC; |
| 115 | /* FIXME: should this check 'hdr->s_size > 0' */ |
| 116 | if (hdr->s_scnptr != 0) |
| 117 | return_section->flags |= SEC_HAS_CONTENTS; |
| 118 | return true; |
| 119 | } |
| 120 | |
| 121 | /* Read in a COFF object and make it into a BFD. This is used by |
| 122 | ECOFF as well. */ |
| 123 | |
| 124 | static const bfd_target * |
| 125 | coff_real_object_p (abfd, nscns, internal_f, internal_a) |
| 126 | bfd *abfd; |
| 127 | unsigned nscns; |
| 128 | struct internal_filehdr *internal_f; |
| 129 | struct internal_aouthdr *internal_a; |
| 130 | { |
| 131 | flagword oflags = abfd->flags; |
| 132 | bfd_vma ostart = bfd_get_start_address (abfd); |
| 133 | PTR tdata; |
| 134 | size_t readsize; /* length of file_info */ |
| 135 | unsigned int scnhsz; |
| 136 | char *external_sections; |
| 137 | |
| 138 | if (!(internal_f->f_flags & F_RELFLG)) |
| 139 | abfd->flags |= HAS_RELOC; |
| 140 | if ((internal_f->f_flags & F_EXEC)) |
| 141 | abfd->flags |= EXEC_P; |
| 142 | if (!(internal_f->f_flags & F_LNNO)) |
| 143 | abfd->flags |= HAS_LINENO; |
| 144 | if (!(internal_f->f_flags & F_LSYMS)) |
| 145 | abfd->flags |= HAS_LOCALS; |
| 146 | |
| 147 | /* FIXME: How can we set D_PAGED correctly? */ |
| 148 | if ((internal_f->f_flags & F_EXEC) != 0) |
| 149 | abfd->flags |= D_PAGED; |
| 150 | |
| 151 | bfd_get_symcount (abfd) = internal_f->f_nsyms; |
| 152 | if (internal_f->f_nsyms) |
| 153 | abfd->flags |= HAS_SYMS; |
| 154 | |
| 155 | if (internal_a != (struct internal_aouthdr *) NULL) |
| 156 | bfd_get_start_address (abfd) = internal_a->entry; |
| 157 | else |
| 158 | bfd_get_start_address (abfd) = 0; |
| 159 | |
| 160 | /* Set up the tdata area. ECOFF uses its own routine, and overrides |
| 161 | abfd->flags. */ |
| 162 | tdata = bfd_coff_mkobject_hook (abfd, (PTR) internal_f, (PTR) internal_a); |
| 163 | if (tdata == NULL) |
| 164 | return 0; |
| 165 | |
| 166 | scnhsz = bfd_coff_scnhsz (abfd); |
| 167 | readsize = nscns * scnhsz; |
| 168 | external_sections = (char *) bfd_alloc (abfd, readsize); |
| 169 | if (!external_sections) |
| 170 | { |
| 171 | bfd_set_error (bfd_error_no_memory); |
| 172 | goto fail; |
| 173 | } |
| 174 | |
| 175 | if (bfd_read ((PTR) external_sections, 1, readsize, abfd) != readsize) |
| 176 | goto fail; |
| 177 | |
| 178 | /* Now copy data as required; construct all asections etc */ |
| 179 | if (nscns != 0) |
| 180 | { |
| 181 | unsigned int i; |
| 182 | for (i = 0; i < nscns; i++) |
| 183 | { |
| 184 | struct internal_scnhdr tmp; |
| 185 | bfd_coff_swap_scnhdr_in (abfd, |
| 186 | (PTR) (external_sections + i * scnhsz), |
| 187 | (PTR) & tmp); |
| 188 | make_a_section_from_file (abfd, &tmp, i + 1); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /* make_abs_section (abfd); */ |
| 193 | |
| 194 | if (bfd_coff_set_arch_mach_hook (abfd, (PTR) internal_f) == false) |
| 195 | goto fail; |
| 196 | |
| 197 | return abfd->xvec; |
| 198 | |
| 199 | fail: |
| 200 | bfd_release (abfd, tdata); |
| 201 | abfd->flags = oflags; |
| 202 | bfd_get_start_address (abfd) = ostart; |
| 203 | return (const bfd_target *) NULL; |
| 204 | } |
| 205 | |
| 206 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is |
| 207 | not a COFF file. This is also used by ECOFF. */ |
| 208 | |
| 209 | const bfd_target * |
| 210 | coff_object_p (abfd) |
| 211 | bfd *abfd; |
| 212 | { |
| 213 | unsigned int filhsz; |
| 214 | unsigned int aoutsz; |
| 215 | int nscns; |
| 216 | PTR filehdr; |
| 217 | struct internal_filehdr internal_f; |
| 218 | struct internal_aouthdr internal_a; |
| 219 | |
| 220 | /* figure out how much to read */ |
| 221 | filhsz = bfd_coff_filhsz (abfd); |
| 222 | aoutsz = bfd_coff_aoutsz (abfd); |
| 223 | |
| 224 | filehdr = bfd_alloc (abfd, filhsz); |
| 225 | if (filehdr == NULL) |
| 226 | return 0; |
| 227 | if (bfd_read (filehdr, 1, filhsz, abfd) != filhsz) |
| 228 | { |
| 229 | if (bfd_get_error () != bfd_error_system_call) |
| 230 | bfd_set_error (bfd_error_wrong_format); |
| 231 | return 0; |
| 232 | } |
| 233 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); |
| 234 | bfd_release (abfd, filehdr); |
| 235 | |
| 236 | if (bfd_coff_bad_format_hook (abfd, &internal_f) == false) |
| 237 | { |
| 238 | bfd_set_error (bfd_error_wrong_format); |
| 239 | return 0; |
| 240 | } |
| 241 | nscns = internal_f.f_nscns; |
| 242 | |
| 243 | if (internal_f.f_opthdr) |
| 244 | { |
| 245 | PTR opthdr; |
| 246 | |
| 247 | opthdr = bfd_alloc (abfd, aoutsz); |
| 248 | if (opthdr == NULL) |
| 249 | return 0;; |
| 250 | if (bfd_read (opthdr, 1, aoutsz, abfd) != aoutsz) |
| 251 | { |
| 252 | return 0; |
| 253 | } |
| 254 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (PTR) & internal_a); |
| 255 | } |
| 256 | |
| 257 | /* Seek past the opt hdr stuff */ |
| 258 | if (bfd_seek (abfd, (file_ptr) (internal_f.f_opthdr + filhsz), SEEK_SET) |
| 259 | != 0) |
| 260 | return NULL; |
| 261 | |
| 262 | return coff_real_object_p (abfd, nscns, &internal_f, |
| 263 | (internal_f.f_opthdr != 0 |
| 264 | ? &internal_a |
| 265 | : (struct internal_aouthdr *) NULL)); |
| 266 | } |
| 267 | |
| 268 | /* Get the BFD section from a COFF symbol section number. */ |
| 269 | |
| 270 | asection * |
| 271 | coff_section_from_bfd_index (abfd, index) |
| 272 | bfd *abfd; |
| 273 | int index; |
| 274 | { |
| 275 | struct sec *answer = abfd->sections; |
| 276 | |
| 277 | if (index == N_ABS) |
| 278 | return bfd_abs_section_ptr; |
| 279 | if (index == N_UNDEF) |
| 280 | return bfd_und_section_ptr; |
| 281 | if (index == N_DEBUG) |
| 282 | return bfd_abs_section_ptr; |
| 283 | |
| 284 | while (answer) |
| 285 | { |
| 286 | if (answer->target_index == index) |
| 287 | return answer; |
| 288 | answer = answer->next; |
| 289 | } |
| 290 | |
| 291 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a |
| 292 | has a bad symbol table in biglitpow.o. */ |
| 293 | return bfd_und_section_ptr; |
| 294 | } |
| 295 | |
| 296 | /* Get the upper bound of a COFF symbol table. */ |
| 297 | |
| 298 | long |
| 299 | coff_get_symtab_upper_bound (abfd) |
| 300 | bfd *abfd; |
| 301 | { |
| 302 | if (!bfd_coff_slurp_symbol_table (abfd)) |
| 303 | return -1; |
| 304 | |
| 305 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | /* Canonicalize a COFF symbol table. */ |
| 310 | |
| 311 | long |
| 312 | coff_get_symtab (abfd, alocation) |
| 313 | bfd *abfd; |
| 314 | asymbol **alocation; |
| 315 | { |
| 316 | unsigned int counter; |
| 317 | coff_symbol_type *symbase; |
| 318 | coff_symbol_type **location = (coff_symbol_type **) alocation; |
| 319 | |
| 320 | if (!bfd_coff_slurp_symbol_table (abfd)) |
| 321 | return -1; |
| 322 | |
| 323 | symbase = obj_symbols (abfd); |
| 324 | counter = bfd_get_symcount (abfd); |
| 325 | while (counter-- > 0) |
| 326 | *location++ = symbase++; |
| 327 | |
| 328 | *location = NULL; |
| 329 | |
| 330 | return bfd_get_symcount (abfd); |
| 331 | } |
| 332 | |
| 333 | /* Set lineno_count for the output sections of a COFF file. */ |
| 334 | |
| 335 | int |
| 336 | coff_count_linenumbers (abfd) |
| 337 | bfd *abfd; |
| 338 | { |
| 339 | unsigned int limit = bfd_get_symcount (abfd); |
| 340 | unsigned int i; |
| 341 | int total = 0; |
| 342 | asymbol **p; |
| 343 | asection *s; |
| 344 | |
| 345 | if (limit == 0) |
| 346 | { |
| 347 | /* This may be from the backend linker, in which case the |
| 348 | lineno_count in the sections is correct. */ |
| 349 | for (s = abfd->sections; s != NULL; s = s->next) |
| 350 | total += s->lineno_count; |
| 351 | return total; |
| 352 | } |
| 353 | |
| 354 | for (s = abfd->sections; s != NULL; s = s->next) |
| 355 | BFD_ASSERT (s->lineno_count == 0); |
| 356 | |
| 357 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) |
| 358 | { |
| 359 | asymbol *q_maybe = *p; |
| 360 | |
| 361 | if (bfd_asymbol_flavour (q_maybe) == bfd_target_coff_flavour) |
| 362 | { |
| 363 | coff_symbol_type *q = coffsymbol (q_maybe); |
| 364 | |
| 365 | if (q->lineno != NULL) |
| 366 | { |
| 367 | /* This symbol has line numbers. Increment the owning |
| 368 | section's linenumber count. */ |
| 369 | alent *l = q->lineno; |
| 370 | |
| 371 | ++q->symbol.section->output_section->lineno_count; |
| 372 | ++total; |
| 373 | ++l; |
| 374 | while (l->line_number != 0) |
| 375 | { |
| 376 | ++total; |
| 377 | ++q->symbol.section->output_section->lineno_count; |
| 378 | ++l; |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | return total; |
| 385 | } |
| 386 | |
| 387 | /* Takes a bfd and a symbol, returns a pointer to the coff specific |
| 388 | area of the symbol if there is one. */ |
| 389 | |
| 390 | /*ARGSUSED*/ |
| 391 | coff_symbol_type * |
| 392 | coff_symbol_from (ignore_abfd, symbol) |
| 393 | bfd *ignore_abfd; |
| 394 | asymbol *symbol; |
| 395 | { |
| 396 | if (bfd_asymbol_flavour (symbol) != bfd_target_coff_flavour) |
| 397 | return (coff_symbol_type *) NULL; |
| 398 | |
| 399 | if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL) |
| 400 | return (coff_symbol_type *) NULL; |
| 401 | |
| 402 | return (coff_symbol_type *) symbol; |
| 403 | } |
| 404 | |
| 405 | static void |
| 406 | fixup_symbol_value (coff_symbol_ptr, syment) |
| 407 | coff_symbol_type *coff_symbol_ptr; |
| 408 | struct internal_syment *syment; |
| 409 | { |
| 410 | |
| 411 | /* Normalize the symbol flags */ |
| 412 | if (bfd_is_com_section (coff_symbol_ptr->symbol.section)) |
| 413 | { |
| 414 | /* a common symbol is undefined with a value */ |
| 415 | syment->n_scnum = N_UNDEF; |
| 416 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 417 | } |
| 418 | else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) |
| 419 | { |
| 420 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 421 | } |
| 422 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) |
| 423 | { |
| 424 | syment->n_scnum = N_UNDEF; |
| 425 | syment->n_value = 0; |
| 426 | } |
| 427 | else |
| 428 | { |
| 429 | if (coff_symbol_ptr->symbol.section) |
| 430 | { |
| 431 | syment->n_scnum = |
| 432 | coff_symbol_ptr->symbol.section->output_section->target_index; |
| 433 | |
| 434 | syment->n_value = |
| 435 | coff_symbol_ptr->symbol.value + |
| 436 | coff_symbol_ptr->symbol.section->output_offset + |
| 437 | coff_symbol_ptr->symbol.section->output_section->vma; |
| 438 | } |
| 439 | else |
| 440 | { |
| 441 | BFD_ASSERT (0); |
| 442 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ |
| 443 | syment->n_scnum = N_ABS; |
| 444 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 445 | } |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | /* Run through all the symbols in the symbol table and work out what |
| 450 | their indexes into the symbol table will be when output. |
| 451 | |
| 452 | Coff requires that each C_FILE symbol points to the next one in the |
| 453 | chain, and that the last one points to the first external symbol. We |
| 454 | do that here too. */ |
| 455 | |
| 456 | boolean |
| 457 | coff_renumber_symbols (bfd_ptr, first_undef) |
| 458 | bfd *bfd_ptr; |
| 459 | int *first_undef; |
| 460 | { |
| 461 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); |
| 462 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 463 | unsigned int native_index = 0; |
| 464 | struct internal_syment *last_file = (struct internal_syment *) NULL; |
| 465 | unsigned int symbol_index; |
| 466 | |
| 467 | /* COFF demands that undefined symbols come after all other symbols. |
| 468 | Since we don't need to impose this extra knowledge on all our |
| 469 | client programs, deal with that here. Sort the symbol table; |
| 470 | just move the undefined symbols to the end, leaving the rest |
| 471 | alone. The O'Reilly book says that defined global symbols come |
| 472 | at the end before the undefined symbols, so we do that here as |
| 473 | well. */ |
| 474 | /* @@ Do we have some condition we could test for, so we don't always |
| 475 | have to do this? I don't think relocatability is quite right, but |
| 476 | I'm not certain. [raeburn:19920508.1711EST] */ |
| 477 | { |
| 478 | asymbol **newsyms; |
| 479 | int i; |
| 480 | |
| 481 | newsyms = (asymbol **) bfd_alloc_by_size_t (bfd_ptr, |
| 482 | sizeof (asymbol *) |
| 483 | * (symbol_count + 1)); |
| 484 | if (!newsyms) |
| 485 | { |
| 486 | bfd_set_error (bfd_error_no_memory); |
| 487 | return false; |
| 488 | } |
| 489 | bfd_ptr->outsymbols = newsyms; |
| 490 | for (i = 0; i < symbol_count; i++) |
| 491 | if (!bfd_is_und_section (symbol_ptr_ptr[i]->section) |
| 492 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL |
| 493 | | BSF_NOT_AT_END |
| 494 | | BSF_FUNCTION)) |
| 495 | != BSF_GLOBAL)) |
| 496 | *newsyms++ = symbol_ptr_ptr[i]; |
| 497 | |
| 498 | for (i = 0; i < symbol_count; i++) |
| 499 | if (!bfd_is_und_section (symbol_ptr_ptr[i]->section) |
| 500 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL |
| 501 | | BSF_NOT_AT_END |
| 502 | | BSF_FUNCTION)) |
| 503 | == BSF_GLOBAL)) |
| 504 | *newsyms++ = symbol_ptr_ptr[i]; |
| 505 | |
| 506 | *first_undef = newsyms - bfd_ptr->outsymbols; |
| 507 | |
| 508 | for (i = 0; i < symbol_count; i++) |
| 509 | if (bfd_is_und_section (symbol_ptr_ptr[i]->section)) |
| 510 | *newsyms++ = symbol_ptr_ptr[i]; |
| 511 | *newsyms = (asymbol *) NULL; |
| 512 | symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 513 | } |
| 514 | |
| 515 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) |
| 516 | { |
| 517 | coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); |
| 518 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
| 519 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
| 520 | { |
| 521 | combined_entry_type *s = coff_symbol_ptr->native; |
| 522 | int i; |
| 523 | |
| 524 | if (s->u.syment.n_sclass == C_FILE) |
| 525 | { |
| 526 | if (last_file != (struct internal_syment *) NULL) |
| 527 | last_file->n_value = native_index; |
| 528 | last_file = &(s->u.syment); |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | |
| 533 | /* Modify the symbol values according to their section and |
| 534 | type */ |
| 535 | |
| 536 | fixup_symbol_value (coff_symbol_ptr, &(s->u.syment)); |
| 537 | } |
| 538 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
| 539 | s[i].offset = native_index++; |
| 540 | } |
| 541 | else |
| 542 | { |
| 543 | native_index++; |
| 544 | } |
| 545 | } |
| 546 | obj_conv_table_size (bfd_ptr) = native_index; |
| 547 | |
| 548 | return true; |
| 549 | } |
| 550 | |
| 551 | /* Run thorough the symbol table again, and fix it so that all |
| 552 | pointers to entries are changed to the entries' index in the output |
| 553 | symbol table. */ |
| 554 | |
| 555 | void |
| 556 | coff_mangle_symbols (bfd_ptr) |
| 557 | bfd *bfd_ptr; |
| 558 | { |
| 559 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); |
| 560 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 561 | unsigned int symbol_index; |
| 562 | |
| 563 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) |
| 564 | { |
| 565 | coff_symbol_type *coff_symbol_ptr = |
| 566 | coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); |
| 567 | |
| 568 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
| 569 | { |
| 570 | int i; |
| 571 | combined_entry_type *s = coff_symbol_ptr->native; |
| 572 | |
| 573 | if (s->fix_value) |
| 574 | { |
| 575 | /* FIXME: We should use a union here. */ |
| 576 | s->u.syment.n_value = |
| 577 | ((combined_entry_type *) s->u.syment.n_value)->offset; |
| 578 | s->fix_value = 0; |
| 579 | } |
| 580 | for (i = 0; i < s->u.syment.n_numaux; i++) |
| 581 | { |
| 582 | combined_entry_type *a = s + i + 1; |
| 583 | if (a->fix_tag) |
| 584 | { |
| 585 | a->u.auxent.x_sym.x_tagndx.l = |
| 586 | a->u.auxent.x_sym.x_tagndx.p->offset; |
| 587 | a->fix_tag = 0; |
| 588 | } |
| 589 | if (a->fix_end) |
| 590 | { |
| 591 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = |
| 592 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; |
| 593 | a->fix_end = 0; |
| 594 | } |
| 595 | if (a->fix_scnlen) |
| 596 | { |
| 597 | a->u.auxent.x_csect.x_scnlen.l = |
| 598 | a->u.auxent.x_csect.x_scnlen.p->offset; |
| 599 | a->fix_scnlen = 0; |
| 600 | } |
| 601 | } |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | static bfd_size_type string_size; |
| 607 | static bfd_size_type debug_string_size; |
| 608 | static asection *debug_string_section; |
| 609 | |
| 610 | static void |
| 611 | coff_fix_symbol_name (abfd, symbol, native) |
| 612 | bfd *abfd; |
| 613 | asymbol *symbol; |
| 614 | combined_entry_type *native; |
| 615 | { |
| 616 | unsigned int name_length; |
| 617 | union internal_auxent *auxent; |
| 618 | char *name = (char *) (symbol->name); |
| 619 | |
| 620 | if (name == (char *) NULL) |
| 621 | { |
| 622 | /* coff symbols always have names, so we'll make one up */ |
| 623 | symbol->name = "strange"; |
| 624 | name = (char *) symbol->name; |
| 625 | } |
| 626 | name_length = strlen (name); |
| 627 | |
| 628 | if (native->u.syment.n_sclass == C_FILE) |
| 629 | { |
| 630 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); |
| 631 | auxent = &(native + 1)->u.auxent; |
| 632 | |
| 633 | if (bfd_coff_long_filenames (abfd)) |
| 634 | { |
| 635 | if (name_length <= FILNMLEN) |
| 636 | { |
| 637 | strncpy (auxent->x_file.x_fname, name, FILNMLEN); |
| 638 | } |
| 639 | else |
| 640 | { |
| 641 | auxent->x_file.x_n.x_offset = string_size + STRING_SIZE_SIZE; |
| 642 | auxent->x_file.x_n.x_zeroes = 0; |
| 643 | string_size += name_length + 1; |
| 644 | } |
| 645 | } |
| 646 | else |
| 647 | { |
| 648 | strncpy (auxent->x_file.x_fname, name, FILNMLEN); |
| 649 | if (name_length > FILNMLEN) |
| 650 | { |
| 651 | name[FILNMLEN] = '\0'; |
| 652 | } |
| 653 | } |
| 654 | } |
| 655 | else |
| 656 | { /* NOT A C_FILE SYMBOL */ |
| 657 | if (name_length <= SYMNMLEN) |
| 658 | { |
| 659 | /* This name will fit into the symbol neatly */ |
| 660 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); |
| 661 | } |
| 662 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
| 663 | { |
| 664 | native->u.syment._n._n_n._n_offset = string_size + STRING_SIZE_SIZE; |
| 665 | native->u.syment._n._n_n._n_zeroes = 0; |
| 666 | string_size += name_length + 1; |
| 667 | } |
| 668 | else |
| 669 | { |
| 670 | long filepos; |
| 671 | bfd_byte buf[2]; |
| 672 | |
| 673 | /* This name should be written into the .debug section. For |
| 674 | some reason each name is preceded by a two byte length |
| 675 | and also followed by a null byte. FIXME: We assume that |
| 676 | the .debug section has already been created, and that it |
| 677 | is large enough. */ |
| 678 | if (debug_string_section == (asection *) NULL) |
| 679 | debug_string_section = bfd_get_section_by_name (abfd, ".debug"); |
| 680 | filepos = bfd_tell (abfd); |
| 681 | bfd_put_16 (abfd, name_length + 1, buf); |
| 682 | if (!bfd_set_section_contents (abfd, |
| 683 | debug_string_section, |
| 684 | (PTR) buf, |
| 685 | (file_ptr) debug_string_size, |
| 686 | (bfd_size_type) 2) |
| 687 | || !bfd_set_section_contents (abfd, |
| 688 | debug_string_section, |
| 689 | (PTR) symbol->name, |
| 690 | (file_ptr) debug_string_size + 2, |
| 691 | (bfd_size_type) name_length + 1)) |
| 692 | abort (); |
| 693 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) |
| 694 | abort (); |
| 695 | native->u.syment._n._n_n._n_offset = debug_string_size + 2; |
| 696 | native->u.syment._n._n_n._n_zeroes = 0; |
| 697 | debug_string_size += name_length + 3; |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | /* We need to keep track of the symbol index so that when we write out |
| 703 | the relocs we can get the index for a symbol. This method is a |
| 704 | hack. FIXME. */ |
| 705 | |
| 706 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) |
| 707 | |
| 708 | /* Write a symbol out to a COFF file. */ |
| 709 | |
| 710 | static boolean |
| 711 | coff_write_symbol (abfd, symbol, native, written) |
| 712 | bfd *abfd; |
| 713 | asymbol *symbol; |
| 714 | combined_entry_type *native; |
| 715 | unsigned int *written; |
| 716 | { |
| 717 | unsigned int numaux = native->u.syment.n_numaux; |
| 718 | int type = native->u.syment.n_type; |
| 719 | int class = native->u.syment.n_sclass; |
| 720 | PTR buf; |
| 721 | bfd_size_type symesz; |
| 722 | |
| 723 | if (native->u.syment.n_sclass == C_FILE) |
| 724 | symbol->flags |= BSF_DEBUGGING; |
| 725 | |
| 726 | if (symbol->flags & BSF_DEBUGGING) |
| 727 | { |
| 728 | native->u.syment.n_scnum = N_DEBUG; |
| 729 | } |
| 730 | else if (bfd_is_abs_section (symbol->section)) |
| 731 | { |
| 732 | native->u.syment.n_scnum = N_ABS; |
| 733 | } |
| 734 | else if (bfd_is_und_section (symbol->section)) |
| 735 | { |
| 736 | native->u.syment.n_scnum = N_UNDEF; |
| 737 | } |
| 738 | else |
| 739 | { |
| 740 | native->u.syment.n_scnum = |
| 741 | symbol->section->output_section->target_index; |
| 742 | } |
| 743 | |
| 744 | coff_fix_symbol_name (abfd, symbol, native); |
| 745 | |
| 746 | symesz = bfd_coff_symesz (abfd); |
| 747 | buf = bfd_alloc (abfd, symesz); |
| 748 | if (!buf) |
| 749 | { |
| 750 | bfd_set_error (bfd_error_no_memory); |
| 751 | return false; |
| 752 | } |
| 753 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
| 754 | if (bfd_write (buf, 1, symesz, abfd) != symesz) |
| 755 | return false; |
| 756 | bfd_release (abfd, buf); |
| 757 | |
| 758 | if (native->u.syment.n_numaux > 0) |
| 759 | { |
| 760 | bfd_size_type auxesz; |
| 761 | unsigned int j; |
| 762 | |
| 763 | auxesz = bfd_coff_auxesz (abfd); |
| 764 | buf = bfd_alloc (abfd, auxesz); |
| 765 | if (!buf) |
| 766 | { |
| 767 | bfd_set_error (bfd_error_no_memory); |
| 768 | return false; |
| 769 | } |
| 770 | for (j = 0; j < native->u.syment.n_numaux; j++) |
| 771 | { |
| 772 | bfd_coff_swap_aux_out (abfd, |
| 773 | &((native + j + 1)->u.auxent), |
| 774 | type, |
| 775 | class, |
| 776 | j, |
| 777 | native->u.syment.n_numaux, |
| 778 | buf); |
| 779 | if (bfd_write (buf, 1, auxesz, abfd) != auxesz) |
| 780 | return false; |
| 781 | } |
| 782 | bfd_release (abfd, buf); |
| 783 | } |
| 784 | |
| 785 | /* Store the index for use when we write out the relocs. */ |
| 786 | set_index (symbol, *written); |
| 787 | |
| 788 | *written += numaux + 1; |
| 789 | return true; |
| 790 | } |
| 791 | |
| 792 | /* Write out a symbol to a COFF file that does not come from a COFF |
| 793 | file originally. This symbol may have been created by the linker, |
| 794 | or we may be linking a non COFF file to a COFF file. */ |
| 795 | |
| 796 | static boolean |
| 797 | coff_write_alien_symbol (abfd, symbol, written) |
| 798 | bfd *abfd; |
| 799 | asymbol *symbol; |
| 800 | unsigned int *written; |
| 801 | { |
| 802 | combined_entry_type *native; |
| 803 | combined_entry_type dummy; |
| 804 | |
| 805 | native = &dummy; |
| 806 | native->u.syment.n_type = T_NULL; |
| 807 | native->u.syment.n_flags = 0; |
| 808 | if (bfd_is_und_section (symbol->section)) |
| 809 | { |
| 810 | native->u.syment.n_scnum = N_UNDEF; |
| 811 | native->u.syment.n_value = symbol->value; |
| 812 | } |
| 813 | else if (bfd_is_com_section (symbol->section)) |
| 814 | { |
| 815 | native->u.syment.n_scnum = N_UNDEF; |
| 816 | native->u.syment.n_value = symbol->value; |
| 817 | } |
| 818 | else if (symbol->flags & BSF_DEBUGGING) |
| 819 | { |
| 820 | /* There isn't much point to writing out a debugging symbol |
| 821 | unless we are prepared to convert it into COFF debugging |
| 822 | format. So, we just ignore them. We must clobber the symbol |
| 823 | name to keep it from being put in the string table. */ |
| 824 | symbol->name = ""; |
| 825 | return true; |
| 826 | } |
| 827 | else |
| 828 | { |
| 829 | native->u.syment.n_scnum = |
| 830 | symbol->section->output_section->target_index; |
| 831 | native->u.syment.n_value = (symbol->value |
| 832 | + symbol->section->output_section->vma |
| 833 | + symbol->section->output_offset); |
| 834 | |
| 835 | /* Copy the any flags from the the file header into the symbol. |
| 836 | FIXME: Why? */ |
| 837 | { |
| 838 | coff_symbol_type *c = coff_symbol_from (abfd, symbol); |
| 839 | if (c != (coff_symbol_type *) NULL) |
| 840 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | native->u.syment.n_type = 0; |
| 845 | if (symbol->flags & BSF_LOCAL) |
| 846 | native->u.syment.n_sclass = C_STAT; |
| 847 | else |
| 848 | native->u.syment.n_sclass = C_EXT; |
| 849 | native->u.syment.n_numaux = 0; |
| 850 | |
| 851 | return coff_write_symbol (abfd, symbol, native, written); |
| 852 | } |
| 853 | |
| 854 | /* Write a native symbol to a COFF file. */ |
| 855 | |
| 856 | static boolean |
| 857 | coff_write_native_symbol (abfd, symbol, written) |
| 858 | bfd *abfd; |
| 859 | coff_symbol_type *symbol; |
| 860 | unsigned int *written; |
| 861 | { |
| 862 | combined_entry_type *native = symbol->native; |
| 863 | alent *lineno = symbol->lineno; |
| 864 | |
| 865 | /* If this symbol has an associated line number, we must store the |
| 866 | symbol index in the line number field. We also tag the auxent to |
| 867 | point to the right place in the lineno table. */ |
| 868 | if (lineno && !symbol->done_lineno) |
| 869 | { |
| 870 | unsigned int count = 0; |
| 871 | lineno[count].u.offset = *written; |
| 872 | if (native->u.syment.n_numaux) |
| 873 | { |
| 874 | union internal_auxent *a = &((native + 1)->u.auxent); |
| 875 | |
| 876 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = |
| 877 | symbol->symbol.section->output_section->moving_line_filepos; |
| 878 | } |
| 879 | |
| 880 | /* Count and relocate all other linenumbers. */ |
| 881 | count++; |
| 882 | while (lineno[count].line_number != 0) |
| 883 | { |
| 884 | #if 0 |
| 885 | /* 13 april 92. sac |
| 886 | I've been told this, but still need proof: |
| 887 | > The second bug is also in `bfd/coffcode.h'. This bug |
| 888 | > causes the linker to screw up the pc-relocations for |
| 889 | > all the line numbers in COFF code. This bug isn't only |
| 890 | > specific to A29K implementations, but affects all |
| 891 | > systems using COFF format binaries. Note that in COFF |
| 892 | > object files, the line number core offsets output by |
| 893 | > the assembler are relative to the start of each |
| 894 | > procedure, not to the start of the .text section. This |
| 895 | > patch relocates the line numbers relative to the |
| 896 | > `native->u.syment.n_value' instead of the section |
| 897 | > virtual address. |
| 898 | > modular!olson@cs.arizona.edu (Jon Olson) |
| 899 | */ |
| 900 | lineno[count].u.offset += native->u.syment.n_value; |
| 901 | #else |
| 902 | lineno[count].u.offset += |
| 903 | (symbol->symbol.section->output_section->vma |
| 904 | + symbol->symbol.section->output_offset); |
| 905 | #endif |
| 906 | count++; |
| 907 | } |
| 908 | symbol->done_lineno = true; |
| 909 | |
| 910 | symbol->symbol.section->output_section->moving_line_filepos += |
| 911 | count * bfd_coff_linesz (abfd); |
| 912 | } |
| 913 | |
| 914 | return coff_write_symbol (abfd, &(symbol->symbol), native, written); |
| 915 | } |
| 916 | |
| 917 | /* Write out the COFF symbols. */ |
| 918 | |
| 919 | boolean |
| 920 | coff_write_symbols (abfd) |
| 921 | bfd *abfd; |
| 922 | { |
| 923 | unsigned int i; |
| 924 | unsigned int limit = bfd_get_symcount (abfd); |
| 925 | unsigned int written = 0; |
| 926 | asymbol **p; |
| 927 | |
| 928 | string_size = 0; |
| 929 | debug_string_size = 0; |
| 930 | |
| 931 | /* Seek to the right place */ |
| 932 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
| 933 | return false; |
| 934 | |
| 935 | /* Output all the symbols we have */ |
| 936 | |
| 937 | written = 0; |
| 938 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) |
| 939 | { |
| 940 | asymbol *symbol = *p; |
| 941 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol); |
| 942 | |
| 943 | if (c_symbol == (coff_symbol_type *) NULL |
| 944 | || c_symbol->native == (combined_entry_type *) NULL) |
| 945 | { |
| 946 | if (!coff_write_alien_symbol (abfd, symbol, &written)) |
| 947 | return false; |
| 948 | } |
| 949 | else |
| 950 | { |
| 951 | if (!coff_write_native_symbol (abfd, c_symbol, &written)) |
| 952 | return false; |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | obj_raw_syment_count (abfd) = written; |
| 957 | |
| 958 | /* Now write out strings */ |
| 959 | |
| 960 | if (string_size != 0) |
| 961 | { |
| 962 | unsigned int size = string_size + STRING_SIZE_SIZE; |
| 963 | bfd_byte buffer[STRING_SIZE_SIZE]; |
| 964 | |
| 965 | #if STRING_SIZE_SIZE == 4 |
| 966 | bfd_h_put_32 (abfd, size, buffer); |
| 967 | #else |
| 968 | #error Change bfd_h_put_32 |
| 969 | #endif |
| 970 | if (bfd_write ((PTR) buffer, 1, sizeof (buffer), abfd) != sizeof (buffer)) |
| 971 | return false; |
| 972 | for (p = abfd->outsymbols, i = 0; |
| 973 | i < limit; |
| 974 | i++, p++) |
| 975 | { |
| 976 | asymbol *q = *p; |
| 977 | size_t name_length = strlen (q->name); |
| 978 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, q); |
| 979 | size_t maxlen; |
| 980 | |
| 981 | /* Figure out whether the symbol name should go in the string |
| 982 | table. Symbol names that are short enough are stored |
| 983 | directly in the syment structure. File names permit a |
| 984 | different, longer, length in the syment structure. On |
| 985 | XCOFF, some symbol names are stored in the .debug section |
| 986 | rather than in the string table. */ |
| 987 | |
| 988 | if (c_symbol == NULL |
| 989 | || c_symbol->native == NULL) |
| 990 | { |
| 991 | /* This is not a COFF symbol, so it certainly is not a |
| 992 | file name, nor does it go in the .debug section. */ |
| 993 | maxlen = SYMNMLEN; |
| 994 | } |
| 995 | else if (bfd_coff_symname_in_debug (abfd, |
| 996 | &c_symbol->native->u.syment)) |
| 997 | { |
| 998 | /* This symbol name is in the XCOFF .debug section. |
| 999 | Don't write it into the string table. */ |
| 1000 | maxlen = name_length; |
| 1001 | } |
| 1002 | else if (c_symbol->native->u.syment.n_sclass == C_FILE) |
| 1003 | maxlen = FILNMLEN; |
| 1004 | else |
| 1005 | maxlen = SYMNMLEN; |
| 1006 | |
| 1007 | if (name_length > maxlen) |
| 1008 | { |
| 1009 | if (bfd_write ((PTR) (q->name), 1, name_length + 1, abfd) |
| 1010 | != name_length + 1) |
| 1011 | return false; |
| 1012 | } |
| 1013 | } |
| 1014 | } |
| 1015 | else |
| 1016 | { |
| 1017 | /* We would normally not write anything here, but we'll write |
| 1018 | out 4 so that any stupid coff reader which tries to read the |
| 1019 | string table even when there isn't one won't croak. */ |
| 1020 | unsigned int size = STRING_SIZE_SIZE; |
| 1021 | bfd_byte buffer[STRING_SIZE_SIZE]; |
| 1022 | |
| 1023 | #if STRING_SIZE_SIZE == 4 |
| 1024 | bfd_h_put_32 (abfd, size, buffer); |
| 1025 | #else |
| 1026 | #error Change bfd_h_put_32 |
| 1027 | #endif |
| 1028 | if (bfd_write ((PTR) buffer, 1, STRING_SIZE_SIZE, abfd) |
| 1029 | != STRING_SIZE_SIZE) |
| 1030 | return false; |
| 1031 | } |
| 1032 | |
| 1033 | /* Make sure the .debug section was created to be the correct size. |
| 1034 | We should create it ourselves on the fly, but we don't because |
| 1035 | BFD won't let us write to any section until we know how large all |
| 1036 | the sections are. We could still do it by making another pass |
| 1037 | over the symbols. FIXME. */ |
| 1038 | BFD_ASSERT (debug_string_size == 0 |
| 1039 | || (debug_string_section != (asection *) NULL |
| 1040 | && (BFD_ALIGN (debug_string_size, |
| 1041 | 1 << debug_string_section->alignment_power) |
| 1042 | == bfd_section_size (abfd, debug_string_section)))); |
| 1043 | |
| 1044 | return true; |
| 1045 | } |
| 1046 | |
| 1047 | boolean |
| 1048 | coff_write_linenumbers (abfd) |
| 1049 | bfd *abfd; |
| 1050 | { |
| 1051 | asection *s; |
| 1052 | bfd_size_type linesz; |
| 1053 | PTR buff; |
| 1054 | |
| 1055 | linesz = bfd_coff_linesz (abfd); |
| 1056 | buff = bfd_alloc (abfd, linesz); |
| 1057 | if (!buff) |
| 1058 | { |
| 1059 | bfd_set_error (bfd_error_no_memory); |
| 1060 | return false; |
| 1061 | } |
| 1062 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 1063 | { |
| 1064 | if (s->lineno_count) |
| 1065 | { |
| 1066 | asymbol **q = abfd->outsymbols; |
| 1067 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) |
| 1068 | return false; |
| 1069 | /* Find all the linenumbers in this section */ |
| 1070 | while (*q) |
| 1071 | { |
| 1072 | asymbol *p = *q; |
| 1073 | if (p->section->output_section == s) |
| 1074 | { |
| 1075 | alent *l = |
| 1076 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, |
| 1077 | (bfd_asymbol_bfd (p), p)); |
| 1078 | if (l) |
| 1079 | { |
| 1080 | /* Found a linenumber entry, output */ |
| 1081 | struct internal_lineno out; |
| 1082 | memset ((PTR) & out, 0, sizeof (out)); |
| 1083 | out.l_lnno = 0; |
| 1084 | out.l_addr.l_symndx = l->u.offset; |
| 1085 | bfd_coff_swap_lineno_out (abfd, &out, buff); |
| 1086 | if (bfd_write (buff, 1, linesz, abfd) != linesz) |
| 1087 | return false; |
| 1088 | l++; |
| 1089 | while (l->line_number) |
| 1090 | { |
| 1091 | out.l_lnno = l->line_number; |
| 1092 | out.l_addr.l_symndx = l->u.offset; |
| 1093 | bfd_coff_swap_lineno_out (abfd, &out, buff); |
| 1094 | if (bfd_write (buff, 1, linesz, abfd) != linesz) |
| 1095 | return false; |
| 1096 | l++; |
| 1097 | } |
| 1098 | } |
| 1099 | } |
| 1100 | q++; |
| 1101 | } |
| 1102 | } |
| 1103 | } |
| 1104 | bfd_release (abfd, buff); |
| 1105 | return true; |
| 1106 | } |
| 1107 | |
| 1108 | /*ARGSUSED */ |
| 1109 | alent * |
| 1110 | coff_get_lineno (ignore_abfd, symbol) |
| 1111 | bfd *ignore_abfd; |
| 1112 | asymbol *symbol; |
| 1113 | { |
| 1114 | return coffsymbol (symbol)->lineno; |
| 1115 | } |
| 1116 | |
| 1117 | asymbol * |
| 1118 | coff_section_symbol (abfd, name) |
| 1119 | bfd *abfd; |
| 1120 | char *name; |
| 1121 | { |
| 1122 | asection *sec = bfd_make_section_old_way (abfd, name); |
| 1123 | asymbol *sym; |
| 1124 | combined_entry_type *csym; |
| 1125 | |
| 1126 | sym = sec->symbol; |
| 1127 | csym = coff_symbol_from (abfd, sym)->native; |
| 1128 | /* Make sure back-end COFF stuff is there. */ |
| 1129 | if (csym == 0) |
| 1130 | { |
| 1131 | struct foo |
| 1132 | { |
| 1133 | coff_symbol_type sym; |
| 1134 | /* @@FIXME This shouldn't use a fixed size!! */ |
| 1135 | combined_entry_type e[10]; |
| 1136 | }; |
| 1137 | struct foo *f; |
| 1138 | f = (struct foo *) bfd_alloc_by_size_t (abfd, sizeof (*f)); |
| 1139 | if (!f) |
| 1140 | { |
| 1141 | bfd_set_error (bfd_error_no_error); |
| 1142 | return NULL; |
| 1143 | } |
| 1144 | memset ((char *) f, 0, sizeof (*f)); |
| 1145 | coff_symbol_from (abfd, sym)->native = csym = f->e; |
| 1146 | } |
| 1147 | csym[0].u.syment.n_sclass = C_STAT; |
| 1148 | csym[0].u.syment.n_numaux = 1; |
| 1149 | /* SF_SET_STATICS (sym); @@ ??? */ |
| 1150 | csym[1].u.auxent.x_scn.x_scnlen = sec->_raw_size; |
| 1151 | csym[1].u.auxent.x_scn.x_nreloc = sec->reloc_count; |
| 1152 | csym[1].u.auxent.x_scn.x_nlinno = sec->lineno_count; |
| 1153 | |
| 1154 | if (sec->output_section == NULL) |
| 1155 | { |
| 1156 | sec->output_section = sec; |
| 1157 | sec->output_offset = 0; |
| 1158 | } |
| 1159 | |
| 1160 | return sym; |
| 1161 | } |
| 1162 | |
| 1163 | /* This function transforms the offsets into the symbol table into |
| 1164 | pointers to syments. */ |
| 1165 | |
| 1166 | static void |
| 1167 | coff_pointerize_aux (abfd, table_base, type, class, auxent) |
| 1168 | bfd *abfd; |
| 1169 | combined_entry_type *table_base; |
| 1170 | int type; |
| 1171 | int class; |
| 1172 | combined_entry_type *auxent; |
| 1173 | { |
| 1174 | /* Don't bother if this is a file or a section */ |
| 1175 | if (class == C_STAT && type == T_NULL) |
| 1176 | return; |
| 1177 | if (class == C_FILE) |
| 1178 | return; |
| 1179 | |
| 1180 | /* Otherwise patch up */ |
| 1181 | #define N_TMASK coff_data (abfd)->local_n_tmask |
| 1182 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
| 1183 | if ((ISFCN (type) || ISTAG (class) || class == C_BLOCK) |
| 1184 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0) |
| 1185 | { |
| 1186 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = |
| 1187 | (table_base |
| 1188 | + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l); |
| 1189 | auxent->fix_end = 1; |
| 1190 | } |
| 1191 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can |
| 1192 | generate one, so we must be careful to ignore it. */ |
| 1193 | if (auxent->u.auxent.x_sym.x_tagndx.l > 0) |
| 1194 | { |
| 1195 | auxent->u.auxent.x_sym.x_tagndx.p = |
| 1196 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; |
| 1197 | auxent->fix_tag = 1; |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | static char * |
| 1202 | build_string_table (abfd) |
| 1203 | bfd *abfd; |
| 1204 | { |
| 1205 | char string_table_size_buffer[STRING_SIZE_SIZE]; |
| 1206 | unsigned int string_table_size; |
| 1207 | char *string_table; |
| 1208 | |
| 1209 | /* At this point we should be "seek"'d to the end of the |
| 1210 | symbols === the symbol table size. */ |
| 1211 | if (bfd_read ((char *) string_table_size_buffer, |
| 1212 | sizeof (string_table_size_buffer), |
| 1213 | 1, abfd) != sizeof (string_table_size)) |
| 1214 | return (NULL); |
| 1215 | |
| 1216 | #if STRING_SIZE_SIZE == 4 |
| 1217 | string_table_size = bfd_h_get_32 (abfd, (bfd_byte *) string_table_size_buffer); |
| 1218 | #else |
| 1219 | #error Change bfd_h_get_32 |
| 1220 | #endif |
| 1221 | |
| 1222 | if ((string_table = (PTR) bfd_alloc (abfd, |
| 1223 | string_table_size -= STRING_SIZE_SIZE)) |
| 1224 | == NULL) |
| 1225 | { |
| 1226 | bfd_set_error (bfd_error_no_memory); |
| 1227 | return (NULL); |
| 1228 | } /* on mallocation error */ |
| 1229 | if (bfd_read (string_table, string_table_size, 1, abfd) != string_table_size) |
| 1230 | return (NULL); |
| 1231 | return string_table; |
| 1232 | } |
| 1233 | |
| 1234 | /* Allocate space for the ".debug" section, and read it. |
| 1235 | We did not read the debug section until now, because |
| 1236 | we didn't want to go to the trouble until someone needed it. */ |
| 1237 | |
| 1238 | static char * |
| 1239 | build_debug_section (abfd) |
| 1240 | bfd *abfd; |
| 1241 | { |
| 1242 | char *debug_section; |
| 1243 | long position; |
| 1244 | |
| 1245 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); |
| 1246 | |
| 1247 | if (!sect) |
| 1248 | { |
| 1249 | bfd_set_error (bfd_error_no_debug_section); |
| 1250 | return NULL; |
| 1251 | } |
| 1252 | |
| 1253 | debug_section = (PTR) bfd_alloc (abfd, |
| 1254 | bfd_get_section_size_before_reloc (sect)); |
| 1255 | if (debug_section == NULL) |
| 1256 | { |
| 1257 | bfd_set_error (bfd_error_no_memory); |
| 1258 | return NULL; |
| 1259 | } |
| 1260 | |
| 1261 | /* Seek to the beginning of the `.debug' section and read it. |
| 1262 | Save the current position first; it is needed by our caller. |
| 1263 | Then read debug section and reset the file pointer. */ |
| 1264 | |
| 1265 | position = bfd_tell (abfd); |
| 1266 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 |
| 1267 | || (bfd_read (debug_section, |
| 1268 | bfd_get_section_size_before_reloc (sect), 1, abfd) |
| 1269 | != bfd_get_section_size_before_reloc (sect)) |
| 1270 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
| 1271 | return NULL; |
| 1272 | return debug_section; |
| 1273 | } |
| 1274 | |
| 1275 | |
| 1276 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
| 1277 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* |
| 1278 | be \0-terminated. */ |
| 1279 | static char * |
| 1280 | copy_name (abfd, name, maxlen) |
| 1281 | bfd *abfd; |
| 1282 | char *name; |
| 1283 | int maxlen; |
| 1284 | { |
| 1285 | int len; |
| 1286 | char *newname; |
| 1287 | |
| 1288 | for (len = 0; len < maxlen; ++len) |
| 1289 | { |
| 1290 | if (name[len] == '\0') |
| 1291 | { |
| 1292 | break; |
| 1293 | } |
| 1294 | } |
| 1295 | |
| 1296 | if ((newname = (PTR) bfd_alloc (abfd, len + 1)) == NULL) |
| 1297 | { |
| 1298 | bfd_set_error (bfd_error_no_memory); |
| 1299 | return (NULL); |
| 1300 | } |
| 1301 | strncpy (newname, name, len); |
| 1302 | newname[len] = '\0'; |
| 1303 | return newname; |
| 1304 | } |
| 1305 | |
| 1306 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and |
| 1307 | knit the symbol names into a normalized form. By normalized here I |
| 1308 | mean that all symbols have an n_offset pointer that points to a null- |
| 1309 | terminated string. */ |
| 1310 | |
| 1311 | combined_entry_type * |
| 1312 | coff_get_normalized_symtab (abfd) |
| 1313 | bfd *abfd; |
| 1314 | { |
| 1315 | combined_entry_type *internal; |
| 1316 | combined_entry_type *internal_ptr; |
| 1317 | combined_entry_type *symbol_ptr; |
| 1318 | combined_entry_type *internal_end; |
| 1319 | bfd_size_type symesz; |
| 1320 | PTR raw; |
| 1321 | char *raw_src; |
| 1322 | char *raw_end; |
| 1323 | char *string_table = NULL; |
| 1324 | char *debug_section = NULL; |
| 1325 | unsigned long size; |
| 1326 | unsigned int raw_size; |
| 1327 | |
| 1328 | if (obj_raw_syments (abfd) != NULL) |
| 1329 | return obj_raw_syments (abfd); |
| 1330 | |
| 1331 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); |
| 1332 | internal = (combined_entry_type *) bfd_alloc (abfd, size); |
| 1333 | if (internal == NULL && size != 0) |
| 1334 | { |
| 1335 | bfd_set_error (bfd_error_no_memory); |
| 1336 | return NULL; |
| 1337 | } |
| 1338 | internal_end = internal + obj_raw_syment_count (abfd); |
| 1339 | |
| 1340 | symesz = bfd_coff_symesz (abfd); |
| 1341 | raw_size = obj_raw_syment_count (abfd) * symesz; |
| 1342 | raw = bfd_alloc (abfd, raw_size); |
| 1343 | if (raw == NULL && raw_size != 0) |
| 1344 | { |
| 1345 | bfd_set_error (bfd_error_no_memory); |
| 1346 | return NULL; |
| 1347 | } |
| 1348 | |
| 1349 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) == -1 |
| 1350 | || bfd_read (raw, raw_size, 1, abfd) != raw_size) |
| 1351 | return NULL; |
| 1352 | |
| 1353 | /* mark the end of the symbols */ |
| 1354 | raw_end = (char *) raw + obj_raw_syment_count (abfd) * symesz; |
| 1355 | |
| 1356 | /* FIXME SOMEDAY. A string table size of zero is very weird, but |
| 1357 | probably possible. If one shows up, it will probably kill us. */ |
| 1358 | |
| 1359 | /* Swap all the raw entries */ |
| 1360 | for (raw_src = (char *) raw, internal_ptr = internal; |
| 1361 | raw_src < raw_end; |
| 1362 | raw_src += symesz, internal_ptr++) |
| 1363 | { |
| 1364 | |
| 1365 | unsigned int i; |
| 1366 | bfd_coff_swap_sym_in (abfd, (PTR) raw_src, |
| 1367 | (PTR) & internal_ptr->u.syment); |
| 1368 | internal_ptr->fix_value = 0; |
| 1369 | internal_ptr->fix_tag = 0; |
| 1370 | internal_ptr->fix_end = 0; |
| 1371 | internal_ptr->fix_scnlen = 0; |
| 1372 | symbol_ptr = internal_ptr; |
| 1373 | |
| 1374 | for (i = 0; |
| 1375 | i < symbol_ptr->u.syment.n_numaux; |
| 1376 | i++) |
| 1377 | { |
| 1378 | internal_ptr++; |
| 1379 | raw_src += symesz; |
| 1380 | |
| 1381 | internal_ptr->fix_value = 0; |
| 1382 | internal_ptr->fix_tag = 0; |
| 1383 | internal_ptr->fix_end = 0; |
| 1384 | internal_ptr->fix_scnlen = 0; |
| 1385 | bfd_coff_swap_aux_in (abfd, (PTR) raw_src, |
| 1386 | symbol_ptr->u.syment.n_type, |
| 1387 | symbol_ptr->u.syment.n_sclass, |
| 1388 | i, symbol_ptr->u.syment.n_numaux, |
| 1389 | &(internal_ptr->u.auxent)); |
| 1390 | /* Remember that bal entries arn't pointerized */ |
| 1391 | if (i != 1 || symbol_ptr->u.syment.n_sclass != C_LEAFPROC) |
| 1392 | { |
| 1393 | |
| 1394 | coff_pointerize_aux (abfd, |
| 1395 | internal, |
| 1396 | symbol_ptr->u.syment.n_type, |
| 1397 | symbol_ptr->u.syment.n_sclass, |
| 1398 | internal_ptr); |
| 1399 | } |
| 1400 | |
| 1401 | } |
| 1402 | } |
| 1403 | |
| 1404 | /* Free all the raw stuff */ |
| 1405 | if (raw != NULL) |
| 1406 | bfd_release (abfd, raw); |
| 1407 | |
| 1408 | for (internal_ptr = internal; internal_ptr < internal_end; |
| 1409 | internal_ptr++) |
| 1410 | { |
| 1411 | if (internal_ptr->u.syment.n_sclass == C_FILE |
| 1412 | && internal_ptr->u.syment.n_numaux > 0) |
| 1413 | { |
| 1414 | /* make a file symbol point to the name in the auxent, since |
| 1415 | the text ".file" is redundant */ |
| 1416 | if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0) |
| 1417 | { |
| 1418 | /* the filename is a long one, point into the string table */ |
| 1419 | if (string_table == NULL) |
| 1420 | string_table = build_string_table (abfd); |
| 1421 | |
| 1422 | internal_ptr->u.syment._n._n_n._n_offset = |
| 1423 | (long) (string_table - STRING_SIZE_SIZE + |
| 1424 | (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset); |
| 1425 | } |
| 1426 | else |
| 1427 | { |
| 1428 | /* ordinary short filename, put into memory anyway */ |
| 1429 | internal_ptr->u.syment._n._n_n._n_offset = (long) |
| 1430 | copy_name (abfd, (internal_ptr + 1)->u.auxent.x_file.x_fname, |
| 1431 | FILNMLEN); |
| 1432 | } |
| 1433 | } |
| 1434 | else |
| 1435 | { |
| 1436 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) |
| 1437 | { |
| 1438 | /* This is a "short" name. Make it long. */ |
| 1439 | unsigned long i = 0; |
| 1440 | char *newstring = NULL; |
| 1441 | |
| 1442 | /* find the length of this string without walking into memory |
| 1443 | that isn't ours. */ |
| 1444 | for (i = 0; i < 8; ++i) |
| 1445 | { |
| 1446 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
| 1447 | { |
| 1448 | break; |
| 1449 | } /* if end of string */ |
| 1450 | } /* possible lengths of this string. */ |
| 1451 | |
| 1452 | if ((newstring = (PTR) bfd_alloc (abfd, ++i)) == NULL) |
| 1453 | { |
| 1454 | bfd_set_error (bfd_error_no_memory); |
| 1455 | return (NULL); |
| 1456 | } /* on error */ |
| 1457 | memset (newstring, 0, i); |
| 1458 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i - 1); |
| 1459 | internal_ptr->u.syment._n._n_n._n_offset = (long int) newstring; |
| 1460 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
| 1461 | } |
| 1462 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) |
| 1463 | internal_ptr->u.syment._n._n_n._n_offset = (long int) ""; |
| 1464 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
| 1465 | { |
| 1466 | /* Long name already. Point symbol at the string in the |
| 1467 | table. */ |
| 1468 | if (string_table == NULL) |
| 1469 | string_table = build_string_table (abfd); |
| 1470 | internal_ptr->u.syment._n._n_n._n_offset = (long int) |
| 1471 | (string_table |
| 1472 | - STRING_SIZE_SIZE |
| 1473 | + internal_ptr->u.syment._n._n_n._n_offset); |
| 1474 | } |
| 1475 | else |
| 1476 | { |
| 1477 | /* Long name in debug section. Very similar. */ |
| 1478 | if (debug_section == NULL) |
| 1479 | debug_section = build_debug_section (abfd); |
| 1480 | internal_ptr->u.syment._n._n_n._n_offset = (long int) |
| 1481 | (debug_section + internal_ptr->u.syment._n._n_n._n_offset); |
| 1482 | } |
| 1483 | } |
| 1484 | internal_ptr += internal_ptr->u.syment.n_numaux; |
| 1485 | } |
| 1486 | |
| 1487 | obj_raw_syments (abfd) = internal; |
| 1488 | BFD_ASSERT (obj_raw_syment_count (abfd) == internal_ptr - internal); |
| 1489 | |
| 1490 | return (internal); |
| 1491 | } /* coff_get_normalized_symtab() */ |
| 1492 | |
| 1493 | long |
| 1494 | coff_get_reloc_upper_bound (abfd, asect) |
| 1495 | bfd *abfd; |
| 1496 | sec_ptr asect; |
| 1497 | { |
| 1498 | if (bfd_get_format (abfd) != bfd_object) |
| 1499 | { |
| 1500 | bfd_set_error (bfd_error_invalid_operation); |
| 1501 | return -1; |
| 1502 | } |
| 1503 | return (asect->reloc_count + 1) * sizeof (arelent *); |
| 1504 | } |
| 1505 | |
| 1506 | asymbol * |
| 1507 | coff_make_empty_symbol (abfd) |
| 1508 | bfd *abfd; |
| 1509 | { |
| 1510 | coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, sizeof (coff_symbol_type)); |
| 1511 | if (new == NULL) |
| 1512 | { |
| 1513 | bfd_set_error (bfd_error_no_memory); |
| 1514 | return (NULL); |
| 1515 | } /* on error */ |
| 1516 | memset (new, 0, sizeof *new); |
| 1517 | new->symbol.section = 0; |
| 1518 | new->native = 0; |
| 1519 | new->lineno = (alent *) NULL; |
| 1520 | new->done_lineno = false; |
| 1521 | new->symbol.the_bfd = abfd; |
| 1522 | return &new->symbol; |
| 1523 | } |
| 1524 | |
| 1525 | /* Make a debugging symbol. */ |
| 1526 | |
| 1527 | asymbol * |
| 1528 | coff_bfd_make_debug_symbol (abfd, ptr, sz) |
| 1529 | bfd *abfd; |
| 1530 | PTR ptr; |
| 1531 | unsigned long sz; |
| 1532 | { |
| 1533 | coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, sizeof (coff_symbol_type)); |
| 1534 | if (new == NULL) |
| 1535 | { |
| 1536 | bfd_set_error (bfd_error_no_memory); |
| 1537 | return (NULL); |
| 1538 | } /* on error */ |
| 1539 | /* @@ This shouldn't be using a constant multiplier. */ |
| 1540 | new->native = (combined_entry_type *) bfd_zalloc (abfd, sizeof (combined_entry_type) * 10); |
| 1541 | if (!new->native) |
| 1542 | { |
| 1543 | bfd_set_error (bfd_error_no_memory); |
| 1544 | return (NULL); |
| 1545 | } /* on error */ |
| 1546 | new->symbol.section = bfd_abs_section_ptr; |
| 1547 | new->symbol.flags = BSF_DEBUGGING; |
| 1548 | new->lineno = (alent *) NULL; |
| 1549 | new->done_lineno = false; |
| 1550 | new->symbol.the_bfd = abfd; |
| 1551 | return &new->symbol; |
| 1552 | } |
| 1553 | |
| 1554 | /*ARGSUSED */ |
| 1555 | void |
| 1556 | coff_get_symbol_info (abfd, symbol, ret) |
| 1557 | bfd *abfd; |
| 1558 | asymbol *symbol; |
| 1559 | symbol_info *ret; |
| 1560 | { |
| 1561 | bfd_symbol_info (symbol, ret); |
| 1562 | } |
| 1563 | |
| 1564 | /* Print out information about COFF symbol. */ |
| 1565 | |
| 1566 | void |
| 1567 | coff_print_symbol (abfd, filep, symbol, how) |
| 1568 | bfd *abfd; |
| 1569 | PTR filep; |
| 1570 | asymbol *symbol; |
| 1571 | bfd_print_symbol_type how; |
| 1572 | { |
| 1573 | FILE *file = (FILE *) filep; |
| 1574 | |
| 1575 | switch (how) |
| 1576 | { |
| 1577 | case bfd_print_symbol_name: |
| 1578 | fprintf (file, "%s", symbol->name); |
| 1579 | break; |
| 1580 | |
| 1581 | case bfd_print_symbol_more: |
| 1582 | fprintf (file, "coff %s %s", |
| 1583 | coffsymbol (symbol)->native ? "n" : "g", |
| 1584 | coffsymbol (symbol)->lineno ? "l" : " "); |
| 1585 | break; |
| 1586 | |
| 1587 | case bfd_print_symbol_all: |
| 1588 | if (coffsymbol (symbol)->native) |
| 1589 | { |
| 1590 | unsigned int aux; |
| 1591 | combined_entry_type *combined = coffsymbol (symbol)->native; |
| 1592 | combined_entry_type *root = obj_raw_syments (abfd); |
| 1593 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; |
| 1594 | |
| 1595 | fprintf (file, "[%3ld]", (long) (combined - root)); |
| 1596 | |
| 1597 | fprintf (file, |
| 1598 | "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%08lx %s", |
| 1599 | combined->u.syment.n_scnum, |
| 1600 | combined->u.syment.n_flags, |
| 1601 | combined->u.syment.n_type, |
| 1602 | combined->u.syment.n_sclass, |
| 1603 | combined->u.syment.n_numaux, |
| 1604 | (unsigned long) combined->u.syment.n_value, |
| 1605 | symbol->name); |
| 1606 | |
| 1607 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) |
| 1608 | { |
| 1609 | combined_entry_type *auxp = combined + aux + 1; |
| 1610 | long tagndx; |
| 1611 | |
| 1612 | if (auxp->fix_tag) |
| 1613 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; |
| 1614 | else |
| 1615 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; |
| 1616 | |
| 1617 | fprintf (file, "\n"); |
| 1618 | switch (combined->u.syment.n_sclass) |
| 1619 | { |
| 1620 | case C_FILE: |
| 1621 | fprintf (file, "File "); |
| 1622 | break; |
| 1623 | |
| 1624 | case C_STAT: |
| 1625 | if (combined->u.syment.n_type == T_NULL) |
| 1626 | /* probably a section symbol? */ |
| 1627 | { |
| 1628 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", |
| 1629 | (long) auxp->u.auxent.x_scn.x_scnlen, |
| 1630 | auxp->u.auxent.x_scn.x_nreloc, |
| 1631 | auxp->u.auxent.x_scn.x_nlinno); |
| 1632 | break; |
| 1633 | } |
| 1634 | /* else fall through */ |
| 1635 | |
| 1636 | default: |
| 1637 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", |
| 1638 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, |
| 1639 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, |
| 1640 | tagndx); |
| 1641 | if (auxp->fix_end) |
| 1642 | fprintf (file, " endndx %ld", |
| 1643 | ((long) |
| 1644 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p |
| 1645 | - root))); |
| 1646 | break; |
| 1647 | } |
| 1648 | } |
| 1649 | |
| 1650 | if (l) |
| 1651 | { |
| 1652 | fprintf (file, "\n%s :", l->u.sym->name); |
| 1653 | l++; |
| 1654 | while (l->line_number) |
| 1655 | { |
| 1656 | fprintf (file, "\n%4d : 0x%lx", |
| 1657 | l->line_number, |
| 1658 | ((unsigned long) |
| 1659 | (l->u.offset + symbol->section->vma))); |
| 1660 | l++; |
| 1661 | } |
| 1662 | } |
| 1663 | } |
| 1664 | else |
| 1665 | { |
| 1666 | bfd_print_symbol_vandf ((PTR) file, symbol); |
| 1667 | fprintf (file, " %-5s %s %s %s", |
| 1668 | symbol->section->name, |
| 1669 | coffsymbol (symbol)->native ? "n" : "g", |
| 1670 | coffsymbol (symbol)->lineno ? "l" : " ", |
| 1671 | symbol->name); |
| 1672 | } |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | /* Provided a BFD, a section and an offset into the section, calculate |
| 1677 | and return the name of the source file and the line nearest to the |
| 1678 | wanted location. */ |
| 1679 | |
| 1680 | /*ARGSUSED*/ |
| 1681 | boolean |
| 1682 | coff_find_nearest_line (abfd, section, ignore_symbols, offset, filename_ptr, |
| 1683 | functionname_ptr, line_ptr) |
| 1684 | bfd *abfd; |
| 1685 | asection *section; |
| 1686 | asymbol **ignore_symbols; |
| 1687 | bfd_vma offset; |
| 1688 | CONST char **filename_ptr; |
| 1689 | CONST char **functionname_ptr; |
| 1690 | unsigned int *line_ptr; |
| 1691 | { |
| 1692 | static bfd *cache_abfd; |
| 1693 | static asection *cache_section; |
| 1694 | static bfd_vma cache_offset; |
| 1695 | static unsigned int cache_i; |
| 1696 | static CONST char *cache_function; |
| 1697 | static unsigned int line_base = 0; |
| 1698 | |
| 1699 | unsigned int i; |
| 1700 | coff_data_type *cof = coff_data (abfd); |
| 1701 | /* Run through the raw syments if available */ |
| 1702 | combined_entry_type *p; |
| 1703 | combined_entry_type *pend; |
| 1704 | alent *l; |
| 1705 | |
| 1706 | |
| 1707 | *filename_ptr = 0; |
| 1708 | *functionname_ptr = 0; |
| 1709 | *line_ptr = 0; |
| 1710 | |
| 1711 | /* Don't try and find line numbers in a non coff file */ |
| 1712 | if (abfd->xvec->flavour != bfd_target_coff_flavour) |
| 1713 | return false; |
| 1714 | |
| 1715 | if (cof == NULL) |
| 1716 | return false; |
| 1717 | |
| 1718 | /* Find the first C_FILE symbol. */ |
| 1719 | p = cof->raw_syments; |
| 1720 | pend = p + cof->raw_syment_count; |
| 1721 | while (p < pend) |
| 1722 | { |
| 1723 | if (p->u.syment.n_sclass == C_FILE) |
| 1724 | break; |
| 1725 | p += 1 + p->u.syment.n_numaux; |
| 1726 | } |
| 1727 | |
| 1728 | if (p < pend) |
| 1729 | { |
| 1730 | bfd_vma maxdiff; |
| 1731 | |
| 1732 | /* Look through the C_FILE symbols to find the best one. */ |
| 1733 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
| 1734 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; |
| 1735 | while (1) |
| 1736 | { |
| 1737 | combined_entry_type *p2; |
| 1738 | |
| 1739 | for (p2 = p + 1 + p->u.syment.n_numaux; |
| 1740 | p2 < pend; |
| 1741 | p2 += 1 + p2->u.syment.n_numaux) |
| 1742 | { |
| 1743 | if (p2->u.syment.n_scnum > 0 |
| 1744 | && (section |
| 1745 | == coff_section_from_bfd_index (abfd, |
| 1746 | p2->u.syment.n_scnum))) |
| 1747 | break; |
| 1748 | if (p2->u.syment.n_sclass == C_FILE) |
| 1749 | { |
| 1750 | p2 = pend; |
| 1751 | break; |
| 1752 | } |
| 1753 | } |
| 1754 | |
| 1755 | if (p2 < pend |
| 1756 | && offset >= p2->u.syment.n_value |
| 1757 | && offset - p2->u.syment.n_value < maxdiff) |
| 1758 | { |
| 1759 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
| 1760 | maxdiff = offset - p2->u.syment.n_value; |
| 1761 | } |
| 1762 | |
| 1763 | /* Avoid endless loops on erroneous files by ensuring that |
| 1764 | we always move forward in the file. */ |
| 1765 | if (p - cof->raw_syments >= p->u.syment.n_value) |
| 1766 | break; |
| 1767 | |
| 1768 | p = cof->raw_syments + p->u.syment.n_value; |
| 1769 | if (p > pend || p->u.syment.n_sclass != C_FILE) |
| 1770 | break; |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | /* Now wander though the raw linenumbers of the section */ |
| 1775 | /* If this is the same BFD as we were previously called with and |
| 1776 | this is the same section, and the offset we want is further down |
| 1777 | then we can prime the lookup loop. */ |
| 1778 | if (abfd == cache_abfd && |
| 1779 | section == cache_section && |
| 1780 | offset >= cache_offset) |
| 1781 | { |
| 1782 | i = cache_i; |
| 1783 | *functionname_ptr = cache_function; |
| 1784 | } |
| 1785 | else |
| 1786 | { |
| 1787 | i = 0; |
| 1788 | } |
| 1789 | l = §ion->lineno[i]; |
| 1790 | |
| 1791 | for (; i < section->lineno_count; i++) |
| 1792 | { |
| 1793 | if (l->line_number == 0) |
| 1794 | { |
| 1795 | /* Get the symbol this line number points at */ |
| 1796 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
| 1797 | if (coff->symbol.value > offset) |
| 1798 | break; |
| 1799 | *functionname_ptr = coff->symbol.name; |
| 1800 | if (coff->native) |
| 1801 | { |
| 1802 | combined_entry_type *s = coff->native; |
| 1803 | s = s + 1 + s->u.syment.n_numaux; |
| 1804 | |
| 1805 | /* In XCOFF a debugging symbol can follow the function |
| 1806 | symbol. */ |
| 1807 | if (s->u.syment.n_scnum == N_DEBUG) |
| 1808 | s = s + 1 + s->u.syment.n_numaux; |
| 1809 | |
| 1810 | /* |
| 1811 | S should now point to the .bf of the function |
| 1812 | */ |
| 1813 | if (s->u.syment.n_numaux) |
| 1814 | { |
| 1815 | /* |
| 1816 | The linenumber is stored in the auxent |
| 1817 | */ |
| 1818 | union internal_auxent *a = &((s + 1)->u.auxent); |
| 1819 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; |
| 1820 | *line_ptr = line_base; |
| 1821 | } |
| 1822 | } |
| 1823 | } |
| 1824 | else |
| 1825 | { |
| 1826 | if (l->u.offset + bfd_get_section_vma (abfd, section) > offset) |
| 1827 | break; |
| 1828 | *line_ptr = l->line_number + line_base - 1; |
| 1829 | } |
| 1830 | l++; |
| 1831 | } |
| 1832 | |
| 1833 | cache_abfd = abfd; |
| 1834 | cache_section = section; |
| 1835 | cache_offset = offset; |
| 1836 | cache_i = i; |
| 1837 | cache_function = *functionname_ptr; |
| 1838 | |
| 1839 | return true; |
| 1840 | } |
| 1841 | |
| 1842 | int |
| 1843 | coff_sizeof_headers (abfd, reloc) |
| 1844 | bfd *abfd; |
| 1845 | boolean reloc; |
| 1846 | { |
| 1847 | size_t size; |
| 1848 | |
| 1849 | if (reloc == false) |
| 1850 | { |
| 1851 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
| 1852 | } |
| 1853 | else |
| 1854 | { |
| 1855 | size = bfd_coff_filhsz (abfd); |
| 1856 | } |
| 1857 | |
| 1858 | size += abfd->section_count * bfd_coff_scnhsz (abfd); |
| 1859 | return size; |
| 1860 | } |