| 1 | /* Support for the generic parts of COFF, for BFD. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2001, 2002, 2003, 2004 |
| 4 | Free Software Foundation, Inc. |
| 5 | Written by Cygnus Support. |
| 6 | |
| 7 | This file is part of BFD, the Binary File Descriptor library. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* Most of this hacked by Steve Chamberlain, sac@cygnus.com. |
| 24 | Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */ |
| 25 | |
| 26 | /* This file contains COFF code that is not dependent on any |
| 27 | particular COFF target. There is only one version of this file in |
| 28 | libbfd.a, so no target specific code may be put in here. Or, to |
| 29 | put it another way, |
| 30 | |
| 31 | ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE ********** |
| 32 | |
| 33 | If you need to add some target specific behaviour, add a new hook |
| 34 | function to bfd_coff_backend_data. |
| 35 | |
| 36 | Some of these functions are also called by the ECOFF routines. |
| 37 | Those functions may not use any COFF specific information, such as |
| 38 | coff_data (abfd). */ |
| 39 | |
| 40 | #include "bfd.h" |
| 41 | #include "sysdep.h" |
| 42 | #include "libbfd.h" |
| 43 | #include "coff/internal.h" |
| 44 | #include "libcoff.h" |
| 45 | |
| 46 | static void coff_fix_symbol_name |
| 47 | PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_size_type *, |
| 48 | asection **, bfd_size_type *)); |
| 49 | static bfd_boolean coff_write_symbol |
| 50 | PARAMS ((bfd *, asymbol *, combined_entry_type *, bfd_vma *, |
| 51 | bfd_size_type *, asection **, bfd_size_type *)); |
| 52 | static bfd_boolean coff_write_alien_symbol |
| 53 | PARAMS ((bfd *, asymbol *, bfd_vma *, bfd_size_type *, |
| 54 | asection **, bfd_size_type *)); |
| 55 | static bfd_boolean coff_write_native_symbol |
| 56 | PARAMS ((bfd *, coff_symbol_type *, bfd_vma *, bfd_size_type *, |
| 57 | asection **, bfd_size_type *)); |
| 58 | static void coff_pointerize_aux |
| 59 | PARAMS ((bfd *, combined_entry_type *, combined_entry_type *, |
| 60 | unsigned int, combined_entry_type *)); |
| 61 | static bfd_boolean make_a_section_from_file |
| 62 | PARAMS ((bfd *, struct internal_scnhdr *, unsigned int)); |
| 63 | static const bfd_target *coff_real_object_p |
| 64 | PARAMS ((bfd *, unsigned, struct internal_filehdr *, |
| 65 | struct internal_aouthdr *)); |
| 66 | static void fixup_symbol_value |
| 67 | PARAMS ((bfd *, coff_symbol_type *, struct internal_syment *)); |
| 68 | static char *build_debug_section |
| 69 | PARAMS ((bfd *)); |
| 70 | static char *copy_name |
| 71 | PARAMS ((bfd *, char *, size_t)); |
| 72 | |
| 73 | #define STRING_SIZE_SIZE (4) |
| 74 | |
| 75 | /* Take a section header read from a coff file (in HOST byte order), |
| 76 | and make a BFD "section" out of it. This is used by ECOFF. */ |
| 77 | static bfd_boolean |
| 78 | make_a_section_from_file (abfd, hdr, target_index) |
| 79 | bfd *abfd; |
| 80 | struct internal_scnhdr *hdr; |
| 81 | unsigned int target_index; |
| 82 | { |
| 83 | asection *return_section; |
| 84 | char *name; |
| 85 | bfd_boolean result = TRUE; |
| 86 | flagword flags; |
| 87 | |
| 88 | name = NULL; |
| 89 | |
| 90 | /* Handle long section names as in PE. */ |
| 91 | if (bfd_coff_long_section_names (abfd) |
| 92 | && hdr->s_name[0] == '/') |
| 93 | { |
| 94 | char buf[SCNNMLEN]; |
| 95 | long strindex; |
| 96 | char *p; |
| 97 | const char *strings; |
| 98 | |
| 99 | memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1); |
| 100 | buf[SCNNMLEN - 1] = '\0'; |
| 101 | strindex = strtol (buf, &p, 10); |
| 102 | if (*p == '\0' && strindex >= 0) |
| 103 | { |
| 104 | strings = _bfd_coff_read_string_table (abfd); |
| 105 | if (strings == NULL) |
| 106 | return FALSE; |
| 107 | /* FIXME: For extra safety, we should make sure that |
| 108 | strindex does not run us past the end, but right now we |
| 109 | don't know the length of the string table. */ |
| 110 | strings += strindex; |
| 111 | name = bfd_alloc (abfd, (bfd_size_type) strlen (strings) + 1); |
| 112 | if (name == NULL) |
| 113 | return FALSE; |
| 114 | strcpy (name, strings); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | if (name == NULL) |
| 119 | { |
| 120 | /* Assorted wastage to null-terminate the name, thanks AT&T! */ |
| 121 | name = bfd_alloc (abfd, (bfd_size_type) sizeof (hdr->s_name) + 1); |
| 122 | if (name == NULL) |
| 123 | return FALSE; |
| 124 | strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name)); |
| 125 | name[sizeof (hdr->s_name)] = 0; |
| 126 | } |
| 127 | |
| 128 | return_section = bfd_make_section_anyway (abfd, name); |
| 129 | if (return_section == NULL) |
| 130 | return FALSE; |
| 131 | |
| 132 | return_section->vma = hdr->s_vaddr; |
| 133 | return_section->lma = hdr->s_paddr; |
| 134 | return_section->size = hdr->s_size; |
| 135 | return_section->filepos = hdr->s_scnptr; |
| 136 | return_section->rel_filepos = hdr->s_relptr; |
| 137 | return_section->reloc_count = hdr->s_nreloc; |
| 138 | |
| 139 | bfd_coff_set_alignment_hook (abfd, return_section, hdr); |
| 140 | |
| 141 | return_section->line_filepos = hdr->s_lnnoptr; |
| 142 | |
| 143 | return_section->lineno_count = hdr->s_nlnno; |
| 144 | return_section->userdata = NULL; |
| 145 | return_section->next = (asection *) NULL; |
| 146 | return_section->target_index = target_index; |
| 147 | |
| 148 | if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section, |
| 149 | & flags)) |
| 150 | result = FALSE; |
| 151 | |
| 152 | return_section->flags = flags; |
| 153 | |
| 154 | /* At least on i386-coff, the line number count for a shared library |
| 155 | section must be ignored. */ |
| 156 | if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) |
| 157 | return_section->lineno_count = 0; |
| 158 | |
| 159 | if (hdr->s_nreloc != 0) |
| 160 | return_section->flags |= SEC_RELOC; |
| 161 | /* FIXME: should this check 'hdr->s_size > 0' */ |
| 162 | if (hdr->s_scnptr != 0) |
| 163 | return_section->flags |= SEC_HAS_CONTENTS; |
| 164 | |
| 165 | return result; |
| 166 | } |
| 167 | |
| 168 | /* Read in a COFF object and make it into a BFD. This is used by |
| 169 | ECOFF as well. */ |
| 170 | |
| 171 | static const bfd_target * |
| 172 | coff_real_object_p (abfd, nscns, internal_f, internal_a) |
| 173 | bfd *abfd; |
| 174 | unsigned nscns; |
| 175 | struct internal_filehdr *internal_f; |
| 176 | struct internal_aouthdr *internal_a; |
| 177 | { |
| 178 | flagword oflags = abfd->flags; |
| 179 | bfd_vma ostart = bfd_get_start_address (abfd); |
| 180 | PTR tdata; |
| 181 | PTR tdata_save; |
| 182 | bfd_size_type readsize; /* length of file_info */ |
| 183 | unsigned int scnhsz; |
| 184 | char *external_sections; |
| 185 | |
| 186 | if (!(internal_f->f_flags & F_RELFLG)) |
| 187 | abfd->flags |= HAS_RELOC; |
| 188 | if ((internal_f->f_flags & F_EXEC)) |
| 189 | abfd->flags |= EXEC_P; |
| 190 | if (!(internal_f->f_flags & F_LNNO)) |
| 191 | abfd->flags |= HAS_LINENO; |
| 192 | if (!(internal_f->f_flags & F_LSYMS)) |
| 193 | abfd->flags |= HAS_LOCALS; |
| 194 | |
| 195 | /* FIXME: How can we set D_PAGED correctly? */ |
| 196 | if ((internal_f->f_flags & F_EXEC) != 0) |
| 197 | abfd->flags |= D_PAGED; |
| 198 | |
| 199 | bfd_get_symcount (abfd) = internal_f->f_nsyms; |
| 200 | if (internal_f->f_nsyms) |
| 201 | abfd->flags |= HAS_SYMS; |
| 202 | |
| 203 | if (internal_a != (struct internal_aouthdr *) NULL) |
| 204 | bfd_get_start_address (abfd) = internal_a->entry; |
| 205 | else |
| 206 | bfd_get_start_address (abfd) = 0; |
| 207 | |
| 208 | /* Set up the tdata area. ECOFF uses its own routine, and overrides |
| 209 | abfd->flags. */ |
| 210 | tdata_save = abfd->tdata.any; |
| 211 | tdata = bfd_coff_mkobject_hook (abfd, (PTR) internal_f, (PTR) internal_a); |
| 212 | if (tdata == NULL) |
| 213 | goto fail2; |
| 214 | |
| 215 | scnhsz = bfd_coff_scnhsz (abfd); |
| 216 | readsize = (bfd_size_type) nscns * scnhsz; |
| 217 | external_sections = (char *) bfd_alloc (abfd, readsize); |
| 218 | if (!external_sections) |
| 219 | goto fail; |
| 220 | |
| 221 | if (bfd_bread ((PTR) external_sections, readsize, abfd) != readsize) |
| 222 | goto fail; |
| 223 | |
| 224 | /* Set the arch/mach *before* swapping in sections; section header swapping |
| 225 | may depend on arch/mach info. */ |
| 226 | if (! bfd_coff_set_arch_mach_hook (abfd, (PTR) internal_f)) |
| 227 | goto fail; |
| 228 | |
| 229 | /* Now copy data as required; construct all asections etc. */ |
| 230 | if (nscns != 0) |
| 231 | { |
| 232 | unsigned int i; |
| 233 | for (i = 0; i < nscns; i++) |
| 234 | { |
| 235 | struct internal_scnhdr tmp; |
| 236 | bfd_coff_swap_scnhdr_in (abfd, |
| 237 | (PTR) (external_sections + i * scnhsz), |
| 238 | (PTR) & tmp); |
| 239 | if (! make_a_section_from_file (abfd, &tmp, i + 1)) |
| 240 | goto fail; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | return abfd->xvec; |
| 245 | |
| 246 | fail: |
| 247 | bfd_release (abfd, tdata); |
| 248 | fail2: |
| 249 | abfd->tdata.any = tdata_save; |
| 250 | abfd->flags = oflags; |
| 251 | bfd_get_start_address (abfd) = ostart; |
| 252 | return (const bfd_target *) NULL; |
| 253 | } |
| 254 | |
| 255 | /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is |
| 256 | not a COFF file. This is also used by ECOFF. */ |
| 257 | |
| 258 | const bfd_target * |
| 259 | coff_object_p (abfd) |
| 260 | bfd *abfd; |
| 261 | { |
| 262 | bfd_size_type filhsz; |
| 263 | bfd_size_type aoutsz; |
| 264 | unsigned int nscns; |
| 265 | PTR filehdr; |
| 266 | struct internal_filehdr internal_f; |
| 267 | struct internal_aouthdr internal_a; |
| 268 | |
| 269 | /* figure out how much to read */ |
| 270 | filhsz = bfd_coff_filhsz (abfd); |
| 271 | aoutsz = bfd_coff_aoutsz (abfd); |
| 272 | |
| 273 | filehdr = bfd_alloc (abfd, filhsz); |
| 274 | if (filehdr == NULL) |
| 275 | return NULL; |
| 276 | if (bfd_bread (filehdr, filhsz, abfd) != filhsz) |
| 277 | { |
| 278 | if (bfd_get_error () != bfd_error_system_call) |
| 279 | bfd_set_error (bfd_error_wrong_format); |
| 280 | bfd_release (abfd, filehdr); |
| 281 | return NULL; |
| 282 | } |
| 283 | bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f); |
| 284 | bfd_release (abfd, filehdr); |
| 285 | |
| 286 | /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ |
| 287 | (less than aoutsz) used in object files and AOUTSZ (equal to |
| 288 | aoutsz) in executables. The bfd_coff_swap_aouthdr_in function |
| 289 | expects this header to be aoutsz bytes in length, so we use that |
| 290 | value in the call to bfd_alloc below. But we must be careful to |
| 291 | only read in f_opthdr bytes in the call to bfd_bread. We should |
| 292 | also attempt to catch corrupt or non-COFF binaries with a strange |
| 293 | value for f_opthdr. */ |
| 294 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
| 295 | || internal_f.f_opthdr > aoutsz) |
| 296 | { |
| 297 | bfd_set_error (bfd_error_wrong_format); |
| 298 | return NULL; |
| 299 | } |
| 300 | nscns = internal_f.f_nscns; |
| 301 | |
| 302 | if (internal_f.f_opthdr) |
| 303 | { |
| 304 | PTR opthdr; |
| 305 | |
| 306 | opthdr = bfd_alloc (abfd, aoutsz); |
| 307 | if (opthdr == NULL) |
| 308 | return NULL; |
| 309 | if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd) |
| 310 | != internal_f.f_opthdr) |
| 311 | { |
| 312 | bfd_release (abfd, opthdr); |
| 313 | return NULL; |
| 314 | } |
| 315 | bfd_coff_swap_aouthdr_in (abfd, opthdr, (PTR) &internal_a); |
| 316 | bfd_release (abfd, opthdr); |
| 317 | } |
| 318 | |
| 319 | return coff_real_object_p (abfd, nscns, &internal_f, |
| 320 | (internal_f.f_opthdr != 0 |
| 321 | ? &internal_a |
| 322 | : (struct internal_aouthdr *) NULL)); |
| 323 | } |
| 324 | |
| 325 | /* Get the BFD section from a COFF symbol section number. */ |
| 326 | |
| 327 | asection * |
| 328 | coff_section_from_bfd_index (abfd, index) |
| 329 | bfd *abfd; |
| 330 | int index; |
| 331 | { |
| 332 | struct bfd_section *answer = abfd->sections; |
| 333 | |
| 334 | if (index == N_ABS) |
| 335 | return bfd_abs_section_ptr; |
| 336 | if (index == N_UNDEF) |
| 337 | return bfd_und_section_ptr; |
| 338 | if (index == N_DEBUG) |
| 339 | return bfd_abs_section_ptr; |
| 340 | |
| 341 | while (answer) |
| 342 | { |
| 343 | if (answer->target_index == index) |
| 344 | return answer; |
| 345 | answer = answer->next; |
| 346 | } |
| 347 | |
| 348 | /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a |
| 349 | has a bad symbol table in biglitpow.o. */ |
| 350 | return bfd_und_section_ptr; |
| 351 | } |
| 352 | |
| 353 | /* Get the upper bound of a COFF symbol table. */ |
| 354 | |
| 355 | long |
| 356 | coff_get_symtab_upper_bound (abfd) |
| 357 | bfd *abfd; |
| 358 | { |
| 359 | if (!bfd_coff_slurp_symbol_table (abfd)) |
| 360 | return -1; |
| 361 | |
| 362 | return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *)); |
| 363 | } |
| 364 | |
| 365 | /* Canonicalize a COFF symbol table. */ |
| 366 | |
| 367 | long |
| 368 | coff_canonicalize_symtab (abfd, alocation) |
| 369 | bfd *abfd; |
| 370 | asymbol **alocation; |
| 371 | { |
| 372 | unsigned int counter; |
| 373 | coff_symbol_type *symbase; |
| 374 | coff_symbol_type **location = (coff_symbol_type **) alocation; |
| 375 | |
| 376 | if (!bfd_coff_slurp_symbol_table (abfd)) |
| 377 | return -1; |
| 378 | |
| 379 | symbase = obj_symbols (abfd); |
| 380 | counter = bfd_get_symcount (abfd); |
| 381 | while (counter-- > 0) |
| 382 | *location++ = symbase++; |
| 383 | |
| 384 | *location = NULL; |
| 385 | |
| 386 | return bfd_get_symcount (abfd); |
| 387 | } |
| 388 | |
| 389 | /* Get the name of a symbol. The caller must pass in a buffer of size |
| 390 | >= SYMNMLEN + 1. */ |
| 391 | |
| 392 | const char * |
| 393 | _bfd_coff_internal_syment_name (abfd, sym, buf) |
| 394 | bfd *abfd; |
| 395 | const struct internal_syment *sym; |
| 396 | char *buf; |
| 397 | { |
| 398 | /* FIXME: It's not clear this will work correctly if sizeof |
| 399 | (_n_zeroes) != 4. */ |
| 400 | if (sym->_n._n_n._n_zeroes != 0 |
| 401 | || sym->_n._n_n._n_offset == 0) |
| 402 | { |
| 403 | memcpy (buf, sym->_n._n_name, SYMNMLEN); |
| 404 | buf[SYMNMLEN] = '\0'; |
| 405 | return buf; |
| 406 | } |
| 407 | else |
| 408 | { |
| 409 | const char *strings; |
| 410 | |
| 411 | BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE); |
| 412 | strings = obj_coff_strings (abfd); |
| 413 | if (strings == NULL) |
| 414 | { |
| 415 | strings = _bfd_coff_read_string_table (abfd); |
| 416 | if (strings == NULL) |
| 417 | return NULL; |
| 418 | } |
| 419 | return strings + sym->_n._n_n._n_offset; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | /* Read in and swap the relocs. This returns a buffer holding the |
| 424 | relocs for section SEC in file ABFD. If CACHE is TRUE and |
| 425 | INTERNAL_RELOCS is NULL, the relocs read in will be saved in case |
| 426 | the function is called again. If EXTERNAL_RELOCS is not NULL, it |
| 427 | is a buffer large enough to hold the unswapped relocs. If |
| 428 | INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold |
| 429 | the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return |
| 430 | value must be INTERNAL_RELOCS. The function returns NULL on error. */ |
| 431 | |
| 432 | struct internal_reloc * |
| 433 | _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, |
| 434 | require_internal, internal_relocs) |
| 435 | bfd *abfd; |
| 436 | asection *sec; |
| 437 | bfd_boolean cache; |
| 438 | bfd_byte *external_relocs; |
| 439 | bfd_boolean require_internal; |
| 440 | struct internal_reloc *internal_relocs; |
| 441 | { |
| 442 | bfd_size_type relsz; |
| 443 | bfd_byte *free_external = NULL; |
| 444 | struct internal_reloc *free_internal = NULL; |
| 445 | bfd_byte *erel; |
| 446 | bfd_byte *erel_end; |
| 447 | struct internal_reloc *irel; |
| 448 | bfd_size_type amt; |
| 449 | |
| 450 | if (coff_section_data (abfd, sec) != NULL |
| 451 | && coff_section_data (abfd, sec)->relocs != NULL) |
| 452 | { |
| 453 | if (! require_internal) |
| 454 | return coff_section_data (abfd, sec)->relocs; |
| 455 | memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs, |
| 456 | sec->reloc_count * sizeof (struct internal_reloc)); |
| 457 | return internal_relocs; |
| 458 | } |
| 459 | |
| 460 | relsz = bfd_coff_relsz (abfd); |
| 461 | |
| 462 | amt = sec->reloc_count * relsz; |
| 463 | if (external_relocs == NULL) |
| 464 | { |
| 465 | free_external = (bfd_byte *) bfd_malloc (amt); |
| 466 | if (free_external == NULL && sec->reloc_count > 0) |
| 467 | goto error_return; |
| 468 | external_relocs = free_external; |
| 469 | } |
| 470 | |
| 471 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 |
| 472 | || bfd_bread (external_relocs, amt, abfd) != amt) |
| 473 | goto error_return; |
| 474 | |
| 475 | if (internal_relocs == NULL) |
| 476 | { |
| 477 | amt = sec->reloc_count; |
| 478 | amt *= sizeof (struct internal_reloc); |
| 479 | free_internal = (struct internal_reloc *) bfd_malloc (amt); |
| 480 | if (free_internal == NULL && sec->reloc_count > 0) |
| 481 | goto error_return; |
| 482 | internal_relocs = free_internal; |
| 483 | } |
| 484 | |
| 485 | /* Swap in the relocs. */ |
| 486 | erel = external_relocs; |
| 487 | erel_end = erel + relsz * sec->reloc_count; |
| 488 | irel = internal_relocs; |
| 489 | for (; erel < erel_end; erel += relsz, irel++) |
| 490 | bfd_coff_swap_reloc_in (abfd, (PTR) erel, (PTR) irel); |
| 491 | |
| 492 | if (free_external != NULL) |
| 493 | { |
| 494 | free (free_external); |
| 495 | free_external = NULL; |
| 496 | } |
| 497 | |
| 498 | if (cache && free_internal != NULL) |
| 499 | { |
| 500 | if (coff_section_data (abfd, sec) == NULL) |
| 501 | { |
| 502 | amt = sizeof (struct coff_section_tdata); |
| 503 | sec->used_by_bfd = (PTR) bfd_zalloc (abfd, amt); |
| 504 | if (sec->used_by_bfd == NULL) |
| 505 | goto error_return; |
| 506 | coff_section_data (abfd, sec)->contents = NULL; |
| 507 | } |
| 508 | coff_section_data (abfd, sec)->relocs = free_internal; |
| 509 | } |
| 510 | |
| 511 | return internal_relocs; |
| 512 | |
| 513 | error_return: |
| 514 | if (free_external != NULL) |
| 515 | free (free_external); |
| 516 | if (free_internal != NULL) |
| 517 | free (free_internal); |
| 518 | return NULL; |
| 519 | } |
| 520 | |
| 521 | /* Set lineno_count for the output sections of a COFF file. */ |
| 522 | |
| 523 | int |
| 524 | coff_count_linenumbers (abfd) |
| 525 | bfd *abfd; |
| 526 | { |
| 527 | unsigned int limit = bfd_get_symcount (abfd); |
| 528 | unsigned int i; |
| 529 | int total = 0; |
| 530 | asymbol **p; |
| 531 | asection *s; |
| 532 | |
| 533 | if (limit == 0) |
| 534 | { |
| 535 | /* This may be from the backend linker, in which case the |
| 536 | lineno_count in the sections is correct. */ |
| 537 | for (s = abfd->sections; s != NULL; s = s->next) |
| 538 | total += s->lineno_count; |
| 539 | return total; |
| 540 | } |
| 541 | |
| 542 | for (s = abfd->sections; s != NULL; s = s->next) |
| 543 | BFD_ASSERT (s->lineno_count == 0); |
| 544 | |
| 545 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) |
| 546 | { |
| 547 | asymbol *q_maybe = *p; |
| 548 | |
| 549 | if (bfd_family_coff (bfd_asymbol_bfd (q_maybe))) |
| 550 | { |
| 551 | coff_symbol_type *q = coffsymbol (q_maybe); |
| 552 | |
| 553 | /* The AIX 4.1 compiler can sometimes generate line numbers |
| 554 | attached to debugging symbols. We try to simply ignore |
| 555 | those here. */ |
| 556 | if (q->lineno != NULL |
| 557 | && q->symbol.section->owner != NULL) |
| 558 | { |
| 559 | /* This symbol has line numbers. Increment the owning |
| 560 | section's linenumber count. */ |
| 561 | alent *l = q->lineno; |
| 562 | |
| 563 | do |
| 564 | { |
| 565 | asection * sec = q->symbol.section->output_section; |
| 566 | |
| 567 | /* Do not try to update fields in read-only sections. */ |
| 568 | if (! bfd_is_const_section (sec)) |
| 569 | sec->lineno_count ++; |
| 570 | |
| 571 | ++total; |
| 572 | ++l; |
| 573 | } |
| 574 | while (l->line_number != 0); |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | return total; |
| 580 | } |
| 581 | |
| 582 | /* Takes a bfd and a symbol, returns a pointer to the coff specific |
| 583 | area of the symbol if there is one. */ |
| 584 | |
| 585 | coff_symbol_type * |
| 586 | coff_symbol_from (ignore_abfd, symbol) |
| 587 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
| 588 | asymbol *symbol; |
| 589 | { |
| 590 | if (!bfd_family_coff (bfd_asymbol_bfd (symbol))) |
| 591 | return (coff_symbol_type *) NULL; |
| 592 | |
| 593 | if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL) |
| 594 | return (coff_symbol_type *) NULL; |
| 595 | |
| 596 | return (coff_symbol_type *) symbol; |
| 597 | } |
| 598 | |
| 599 | static void |
| 600 | fixup_symbol_value (abfd, coff_symbol_ptr, syment) |
| 601 | bfd *abfd; |
| 602 | coff_symbol_type *coff_symbol_ptr; |
| 603 | struct internal_syment *syment; |
| 604 | { |
| 605 | |
| 606 | /* Normalize the symbol flags */ |
| 607 | if (bfd_is_com_section (coff_symbol_ptr->symbol.section)) |
| 608 | { |
| 609 | /* a common symbol is undefined with a value */ |
| 610 | syment->n_scnum = N_UNDEF; |
| 611 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 612 | } |
| 613 | else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0 |
| 614 | && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0) |
| 615 | { |
| 616 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 617 | } |
| 618 | else if (bfd_is_und_section (coff_symbol_ptr->symbol.section)) |
| 619 | { |
| 620 | syment->n_scnum = N_UNDEF; |
| 621 | syment->n_value = 0; |
| 622 | } |
| 623 | /* FIXME: Do we need to handle the absolute section here? */ |
| 624 | else |
| 625 | { |
| 626 | if (coff_symbol_ptr->symbol.section) |
| 627 | { |
| 628 | syment->n_scnum = |
| 629 | coff_symbol_ptr->symbol.section->output_section->target_index; |
| 630 | |
| 631 | syment->n_value = (coff_symbol_ptr->symbol.value |
| 632 | + coff_symbol_ptr->symbol.section->output_offset); |
| 633 | if (! obj_pe (abfd)) |
| 634 | { |
| 635 | syment->n_value += (syment->n_sclass == C_STATLAB) |
| 636 | ? coff_symbol_ptr->symbol.section->output_section->lma |
| 637 | : coff_symbol_ptr->symbol.section->output_section->vma; |
| 638 | } |
| 639 | } |
| 640 | else |
| 641 | { |
| 642 | BFD_ASSERT (0); |
| 643 | /* This can happen, but I don't know why yet (steve@cygnus.com) */ |
| 644 | syment->n_scnum = N_ABS; |
| 645 | syment->n_value = coff_symbol_ptr->symbol.value; |
| 646 | } |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | /* Run through all the symbols in the symbol table and work out what |
| 651 | their indexes into the symbol table will be when output. |
| 652 | |
| 653 | Coff requires that each C_FILE symbol points to the next one in the |
| 654 | chain, and that the last one points to the first external symbol. We |
| 655 | do that here too. */ |
| 656 | |
| 657 | bfd_boolean |
| 658 | coff_renumber_symbols (bfd_ptr, first_undef) |
| 659 | bfd *bfd_ptr; |
| 660 | int *first_undef; |
| 661 | { |
| 662 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); |
| 663 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 664 | unsigned int native_index = 0; |
| 665 | struct internal_syment *last_file = (struct internal_syment *) NULL; |
| 666 | unsigned int symbol_index; |
| 667 | |
| 668 | /* COFF demands that undefined symbols come after all other symbols. |
| 669 | Since we don't need to impose this extra knowledge on all our |
| 670 | client programs, deal with that here. Sort the symbol table; |
| 671 | just move the undefined symbols to the end, leaving the rest |
| 672 | alone. The O'Reilly book says that defined global symbols come |
| 673 | at the end before the undefined symbols, so we do that here as |
| 674 | well. */ |
| 675 | /* @@ Do we have some condition we could test for, so we don't always |
| 676 | have to do this? I don't think relocatability is quite right, but |
| 677 | I'm not certain. [raeburn:19920508.1711EST] */ |
| 678 | { |
| 679 | asymbol **newsyms; |
| 680 | unsigned int i; |
| 681 | bfd_size_type amt; |
| 682 | |
| 683 | amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1); |
| 684 | newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt); |
| 685 | if (!newsyms) |
| 686 | return FALSE; |
| 687 | bfd_ptr->outsymbols = newsyms; |
| 688 | for (i = 0; i < symbol_count; i++) |
| 689 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0 |
| 690 | || (!bfd_is_und_section (symbol_ptr_ptr[i]->section) |
| 691 | && !bfd_is_com_section (symbol_ptr_ptr[i]->section) |
| 692 | && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0 |
| 693 | || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) |
| 694 | == 0)))) |
| 695 | *newsyms++ = symbol_ptr_ptr[i]; |
| 696 | |
| 697 | for (i = 0; i < symbol_count; i++) |
| 698 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 |
| 699 | && !bfd_is_und_section (symbol_ptr_ptr[i]->section) |
| 700 | && (bfd_is_com_section (symbol_ptr_ptr[i]->section) |
| 701 | || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0 |
| 702 | && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK)) |
| 703 | != 0)))) |
| 704 | *newsyms++ = symbol_ptr_ptr[i]; |
| 705 | |
| 706 | *first_undef = newsyms - bfd_ptr->outsymbols; |
| 707 | |
| 708 | for (i = 0; i < symbol_count; i++) |
| 709 | if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0 |
| 710 | && bfd_is_und_section (symbol_ptr_ptr[i]->section)) |
| 711 | *newsyms++ = symbol_ptr_ptr[i]; |
| 712 | *newsyms = (asymbol *) NULL; |
| 713 | symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 714 | } |
| 715 | |
| 716 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) |
| 717 | { |
| 718 | coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); |
| 719 | symbol_ptr_ptr[symbol_index]->udata.i = symbol_index; |
| 720 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
| 721 | { |
| 722 | combined_entry_type *s = coff_symbol_ptr->native; |
| 723 | int i; |
| 724 | |
| 725 | if (s->u.syment.n_sclass == C_FILE) |
| 726 | { |
| 727 | if (last_file != (struct internal_syment *) NULL) |
| 728 | last_file->n_value = native_index; |
| 729 | last_file = &(s->u.syment); |
| 730 | } |
| 731 | else |
| 732 | { |
| 733 | |
| 734 | /* Modify the symbol values according to their section and |
| 735 | type */ |
| 736 | |
| 737 | fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment)); |
| 738 | } |
| 739 | for (i = 0; i < s->u.syment.n_numaux + 1; i++) |
| 740 | s[i].offset = native_index++; |
| 741 | } |
| 742 | else |
| 743 | { |
| 744 | native_index++; |
| 745 | } |
| 746 | } |
| 747 | obj_conv_table_size (bfd_ptr) = native_index; |
| 748 | |
| 749 | return TRUE; |
| 750 | } |
| 751 | |
| 752 | /* Run thorough the symbol table again, and fix it so that all |
| 753 | pointers to entries are changed to the entries' index in the output |
| 754 | symbol table. */ |
| 755 | |
| 756 | void |
| 757 | coff_mangle_symbols (bfd_ptr) |
| 758 | bfd *bfd_ptr; |
| 759 | { |
| 760 | unsigned int symbol_count = bfd_get_symcount (bfd_ptr); |
| 761 | asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols; |
| 762 | unsigned int symbol_index; |
| 763 | |
| 764 | for (symbol_index = 0; symbol_index < symbol_count; symbol_index++) |
| 765 | { |
| 766 | coff_symbol_type *coff_symbol_ptr = |
| 767 | coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]); |
| 768 | |
| 769 | if (coff_symbol_ptr && coff_symbol_ptr->native) |
| 770 | { |
| 771 | int i; |
| 772 | combined_entry_type *s = coff_symbol_ptr->native; |
| 773 | |
| 774 | if (s->fix_value) |
| 775 | { |
| 776 | /* FIXME: We should use a union here. */ |
| 777 | s->u.syment.n_value = |
| 778 | (bfd_vma)((combined_entry_type *) |
| 779 | ((unsigned long) s->u.syment.n_value))->offset; |
| 780 | s->fix_value = 0; |
| 781 | } |
| 782 | if (s->fix_line) |
| 783 | { |
| 784 | /* The value is the offset into the line number entries |
| 785 | for the symbol's section. On output, the symbol's |
| 786 | section should be N_DEBUG. */ |
| 787 | s->u.syment.n_value = |
| 788 | (coff_symbol_ptr->symbol.section->output_section->line_filepos |
| 789 | + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr)); |
| 790 | coff_symbol_ptr->symbol.section = |
| 791 | coff_section_from_bfd_index (bfd_ptr, N_DEBUG); |
| 792 | BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING); |
| 793 | } |
| 794 | for (i = 0; i < s->u.syment.n_numaux; i++) |
| 795 | { |
| 796 | combined_entry_type *a = s + i + 1; |
| 797 | if (a->fix_tag) |
| 798 | { |
| 799 | a->u.auxent.x_sym.x_tagndx.l = |
| 800 | a->u.auxent.x_sym.x_tagndx.p->offset; |
| 801 | a->fix_tag = 0; |
| 802 | } |
| 803 | if (a->fix_end) |
| 804 | { |
| 805 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l = |
| 806 | a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset; |
| 807 | a->fix_end = 0; |
| 808 | } |
| 809 | if (a->fix_scnlen) |
| 810 | { |
| 811 | a->u.auxent.x_csect.x_scnlen.l = |
| 812 | a->u.auxent.x_csect.x_scnlen.p->offset; |
| 813 | a->fix_scnlen = 0; |
| 814 | } |
| 815 | } |
| 816 | } |
| 817 | } |
| 818 | } |
| 819 | |
| 820 | static void |
| 821 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, |
| 822 | debug_string_section_p, debug_string_size_p) |
| 823 | bfd *abfd; |
| 824 | asymbol *symbol; |
| 825 | combined_entry_type *native; |
| 826 | bfd_size_type *string_size_p; |
| 827 | asection **debug_string_section_p; |
| 828 | bfd_size_type *debug_string_size_p; |
| 829 | { |
| 830 | unsigned int name_length; |
| 831 | union internal_auxent *auxent; |
| 832 | char *name = (char *) (symbol->name); |
| 833 | |
| 834 | if (name == (char *) NULL) |
| 835 | { |
| 836 | /* coff symbols always have names, so we'll make one up */ |
| 837 | symbol->name = "strange"; |
| 838 | name = (char *) symbol->name; |
| 839 | } |
| 840 | name_length = strlen (name); |
| 841 | |
| 842 | if (native->u.syment.n_sclass == C_FILE |
| 843 | && native->u.syment.n_numaux > 0) |
| 844 | { |
| 845 | unsigned int filnmlen; |
| 846 | |
| 847 | if (bfd_coff_force_symnames_in_strings (abfd)) |
| 848 | { |
| 849 | native->u.syment._n._n_n._n_offset = |
| 850 | (*string_size_p + STRING_SIZE_SIZE); |
| 851 | native->u.syment._n._n_n._n_zeroes = 0; |
| 852 | *string_size_p += 6; /* strlen(".file") + 1 */ |
| 853 | } |
| 854 | else |
| 855 | strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN); |
| 856 | |
| 857 | auxent = &(native + 1)->u.auxent; |
| 858 | |
| 859 | filnmlen = bfd_coff_filnmlen (abfd); |
| 860 | |
| 861 | if (bfd_coff_long_filenames (abfd)) |
| 862 | { |
| 863 | if (name_length <= filnmlen) |
| 864 | { |
| 865 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
| 866 | } |
| 867 | else |
| 868 | { |
| 869 | auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE; |
| 870 | auxent->x_file.x_n.x_zeroes = 0; |
| 871 | *string_size_p += name_length + 1; |
| 872 | } |
| 873 | } |
| 874 | else |
| 875 | { |
| 876 | strncpy (auxent->x_file.x_fname, name, filnmlen); |
| 877 | if (name_length > filnmlen) |
| 878 | name[filnmlen] = '\0'; |
| 879 | } |
| 880 | } |
| 881 | else |
| 882 | { |
| 883 | if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd)) |
| 884 | { |
| 885 | /* This name will fit into the symbol neatly */ |
| 886 | strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN); |
| 887 | } |
| 888 | else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment)) |
| 889 | { |
| 890 | native->u.syment._n._n_n._n_offset = (*string_size_p |
| 891 | + STRING_SIZE_SIZE); |
| 892 | native->u.syment._n._n_n._n_zeroes = 0; |
| 893 | *string_size_p += name_length + 1; |
| 894 | } |
| 895 | else |
| 896 | { |
| 897 | file_ptr filepos; |
| 898 | bfd_byte buf[4]; |
| 899 | int prefix_len = bfd_coff_debug_string_prefix_length (abfd); |
| 900 | |
| 901 | /* This name should be written into the .debug section. For |
| 902 | some reason each name is preceded by a two byte length |
| 903 | and also followed by a null byte. FIXME: We assume that |
| 904 | the .debug section has already been created, and that it |
| 905 | is large enough. */ |
| 906 | if (*debug_string_section_p == (asection *) NULL) |
| 907 | *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug"); |
| 908 | filepos = bfd_tell (abfd); |
| 909 | if (prefix_len == 4) |
| 910 | bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf); |
| 911 | else |
| 912 | bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf); |
| 913 | |
| 914 | if (!bfd_set_section_contents (abfd, |
| 915 | *debug_string_section_p, |
| 916 | (PTR) buf, |
| 917 | (file_ptr) *debug_string_size_p, |
| 918 | (bfd_size_type) prefix_len) |
| 919 | || !bfd_set_section_contents (abfd, |
| 920 | *debug_string_section_p, |
| 921 | (PTR) symbol->name, |
| 922 | (file_ptr) (*debug_string_size_p |
| 923 | + prefix_len), |
| 924 | (bfd_size_type) name_length + 1)) |
| 925 | abort (); |
| 926 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) |
| 927 | abort (); |
| 928 | native->u.syment._n._n_n._n_offset = |
| 929 | *debug_string_size_p + prefix_len; |
| 930 | native->u.syment._n._n_n._n_zeroes = 0; |
| 931 | *debug_string_size_p += name_length + 1 + prefix_len; |
| 932 | } |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | /* We need to keep track of the symbol index so that when we write out |
| 937 | the relocs we can get the index for a symbol. This method is a |
| 938 | hack. FIXME. */ |
| 939 | |
| 940 | #define set_index(symbol, idx) ((symbol)->udata.i = (idx)) |
| 941 | |
| 942 | /* Write a symbol out to a COFF file. */ |
| 943 | |
| 944 | static bfd_boolean |
| 945 | coff_write_symbol (abfd, symbol, native, written, string_size_p, |
| 946 | debug_string_section_p, debug_string_size_p) |
| 947 | bfd *abfd; |
| 948 | asymbol *symbol; |
| 949 | combined_entry_type *native; |
| 950 | bfd_vma *written; |
| 951 | bfd_size_type *string_size_p; |
| 952 | asection **debug_string_section_p; |
| 953 | bfd_size_type *debug_string_size_p; |
| 954 | { |
| 955 | unsigned int numaux = native->u.syment.n_numaux; |
| 956 | int type = native->u.syment.n_type; |
| 957 | int class = native->u.syment.n_sclass; |
| 958 | PTR buf; |
| 959 | bfd_size_type symesz; |
| 960 | |
| 961 | if (native->u.syment.n_sclass == C_FILE) |
| 962 | symbol->flags |= BSF_DEBUGGING; |
| 963 | |
| 964 | if (symbol->flags & BSF_DEBUGGING |
| 965 | && bfd_is_abs_section (symbol->section)) |
| 966 | { |
| 967 | native->u.syment.n_scnum = N_DEBUG; |
| 968 | } |
| 969 | else if (bfd_is_abs_section (symbol->section)) |
| 970 | { |
| 971 | native->u.syment.n_scnum = N_ABS; |
| 972 | } |
| 973 | else if (bfd_is_und_section (symbol->section)) |
| 974 | { |
| 975 | native->u.syment.n_scnum = N_UNDEF; |
| 976 | } |
| 977 | else |
| 978 | { |
| 979 | native->u.syment.n_scnum = |
| 980 | symbol->section->output_section->target_index; |
| 981 | } |
| 982 | |
| 983 | coff_fix_symbol_name (abfd, symbol, native, string_size_p, |
| 984 | debug_string_section_p, debug_string_size_p); |
| 985 | |
| 986 | symesz = bfd_coff_symesz (abfd); |
| 987 | buf = bfd_alloc (abfd, symesz); |
| 988 | if (!buf) |
| 989 | return FALSE; |
| 990 | bfd_coff_swap_sym_out (abfd, &native->u.syment, buf); |
| 991 | if (bfd_bwrite (buf, symesz, abfd) != symesz) |
| 992 | return FALSE; |
| 993 | bfd_release (abfd, buf); |
| 994 | |
| 995 | if (native->u.syment.n_numaux > 0) |
| 996 | { |
| 997 | bfd_size_type auxesz; |
| 998 | unsigned int j; |
| 999 | |
| 1000 | auxesz = bfd_coff_auxesz (abfd); |
| 1001 | buf = bfd_alloc (abfd, auxesz); |
| 1002 | if (!buf) |
| 1003 | return FALSE; |
| 1004 | for (j = 0; j < native->u.syment.n_numaux; j++) |
| 1005 | { |
| 1006 | bfd_coff_swap_aux_out (abfd, |
| 1007 | &((native + j + 1)->u.auxent), |
| 1008 | type, |
| 1009 | class, |
| 1010 | (int) j, |
| 1011 | native->u.syment.n_numaux, |
| 1012 | buf); |
| 1013 | if (bfd_bwrite (buf, auxesz, abfd) != auxesz) |
| 1014 | return FALSE; |
| 1015 | } |
| 1016 | bfd_release (abfd, buf); |
| 1017 | } |
| 1018 | |
| 1019 | /* Store the index for use when we write out the relocs. */ |
| 1020 | set_index (symbol, *written); |
| 1021 | |
| 1022 | *written += numaux + 1; |
| 1023 | return TRUE; |
| 1024 | } |
| 1025 | |
| 1026 | /* Write out a symbol to a COFF file that does not come from a COFF |
| 1027 | file originally. This symbol may have been created by the linker, |
| 1028 | or we may be linking a non COFF file to a COFF file. */ |
| 1029 | |
| 1030 | static bfd_boolean |
| 1031 | coff_write_alien_symbol (abfd, symbol, written, string_size_p, |
| 1032 | debug_string_section_p, debug_string_size_p) |
| 1033 | bfd *abfd; |
| 1034 | asymbol *symbol; |
| 1035 | bfd_vma *written; |
| 1036 | bfd_size_type *string_size_p; |
| 1037 | asection **debug_string_section_p; |
| 1038 | bfd_size_type *debug_string_size_p; |
| 1039 | { |
| 1040 | combined_entry_type *native; |
| 1041 | combined_entry_type dummy; |
| 1042 | |
| 1043 | native = &dummy; |
| 1044 | native->u.syment.n_type = T_NULL; |
| 1045 | native->u.syment.n_flags = 0; |
| 1046 | if (bfd_is_und_section (symbol->section)) |
| 1047 | { |
| 1048 | native->u.syment.n_scnum = N_UNDEF; |
| 1049 | native->u.syment.n_value = symbol->value; |
| 1050 | } |
| 1051 | else if (bfd_is_com_section (symbol->section)) |
| 1052 | { |
| 1053 | native->u.syment.n_scnum = N_UNDEF; |
| 1054 | native->u.syment.n_value = symbol->value; |
| 1055 | } |
| 1056 | else if (symbol->flags & BSF_DEBUGGING) |
| 1057 | { |
| 1058 | /* There isn't much point to writing out a debugging symbol |
| 1059 | unless we are prepared to convert it into COFF debugging |
| 1060 | format. So, we just ignore them. We must clobber the symbol |
| 1061 | name to keep it from being put in the string table. */ |
| 1062 | symbol->name = ""; |
| 1063 | return TRUE; |
| 1064 | } |
| 1065 | else |
| 1066 | { |
| 1067 | native->u.syment.n_scnum = |
| 1068 | symbol->section->output_section->target_index; |
| 1069 | native->u.syment.n_value = (symbol->value |
| 1070 | + symbol->section->output_offset); |
| 1071 | if (! obj_pe (abfd)) |
| 1072 | native->u.syment.n_value += symbol->section->output_section->vma; |
| 1073 | |
| 1074 | /* Copy the any flags from the file header into the symbol. |
| 1075 | FIXME: Why? */ |
| 1076 | { |
| 1077 | coff_symbol_type *c = coff_symbol_from (abfd, symbol); |
| 1078 | if (c != (coff_symbol_type *) NULL) |
| 1079 | native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags; |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | native->u.syment.n_type = 0; |
| 1084 | if (symbol->flags & BSF_LOCAL) |
| 1085 | native->u.syment.n_sclass = C_STAT; |
| 1086 | else if (symbol->flags & BSF_WEAK) |
| 1087 | native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT; |
| 1088 | else |
| 1089 | native->u.syment.n_sclass = C_EXT; |
| 1090 | native->u.syment.n_numaux = 0; |
| 1091 | |
| 1092 | return coff_write_symbol (abfd, symbol, native, written, string_size_p, |
| 1093 | debug_string_section_p, debug_string_size_p); |
| 1094 | } |
| 1095 | |
| 1096 | /* Write a native symbol to a COFF file. */ |
| 1097 | |
| 1098 | static bfd_boolean |
| 1099 | coff_write_native_symbol (abfd, symbol, written, string_size_p, |
| 1100 | debug_string_section_p, debug_string_size_p) |
| 1101 | bfd *abfd; |
| 1102 | coff_symbol_type *symbol; |
| 1103 | bfd_vma *written; |
| 1104 | bfd_size_type *string_size_p; |
| 1105 | asection **debug_string_section_p; |
| 1106 | bfd_size_type *debug_string_size_p; |
| 1107 | { |
| 1108 | combined_entry_type *native = symbol->native; |
| 1109 | alent *lineno = symbol->lineno; |
| 1110 | |
| 1111 | /* If this symbol has an associated line number, we must store the |
| 1112 | symbol index in the line number field. We also tag the auxent to |
| 1113 | point to the right place in the lineno table. */ |
| 1114 | if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL) |
| 1115 | { |
| 1116 | unsigned int count = 0; |
| 1117 | lineno[count].u.offset = *written; |
| 1118 | if (native->u.syment.n_numaux) |
| 1119 | { |
| 1120 | union internal_auxent *a = &((native + 1)->u.auxent); |
| 1121 | |
| 1122 | a->x_sym.x_fcnary.x_fcn.x_lnnoptr = |
| 1123 | symbol->symbol.section->output_section->moving_line_filepos; |
| 1124 | } |
| 1125 | |
| 1126 | /* Count and relocate all other linenumbers. */ |
| 1127 | count++; |
| 1128 | while (lineno[count].line_number != 0) |
| 1129 | { |
| 1130 | lineno[count].u.offset += |
| 1131 | (symbol->symbol.section->output_section->vma |
| 1132 | + symbol->symbol.section->output_offset); |
| 1133 | count++; |
| 1134 | } |
| 1135 | symbol->done_lineno = TRUE; |
| 1136 | |
| 1137 | if (! bfd_is_const_section (symbol->symbol.section->output_section)) |
| 1138 | symbol->symbol.section->output_section->moving_line_filepos += |
| 1139 | count * bfd_coff_linesz (abfd); |
| 1140 | } |
| 1141 | |
| 1142 | return coff_write_symbol (abfd, &(symbol->symbol), native, written, |
| 1143 | string_size_p, debug_string_section_p, |
| 1144 | debug_string_size_p); |
| 1145 | } |
| 1146 | |
| 1147 | /* Write out the COFF symbols. */ |
| 1148 | |
| 1149 | bfd_boolean |
| 1150 | coff_write_symbols (abfd) |
| 1151 | bfd *abfd; |
| 1152 | { |
| 1153 | bfd_size_type string_size; |
| 1154 | asection *debug_string_section; |
| 1155 | bfd_size_type debug_string_size; |
| 1156 | unsigned int i; |
| 1157 | unsigned int limit = bfd_get_symcount (abfd); |
| 1158 | bfd_signed_vma written = 0; |
| 1159 | asymbol **p; |
| 1160 | |
| 1161 | string_size = 0; |
| 1162 | debug_string_section = NULL; |
| 1163 | debug_string_size = 0; |
| 1164 | |
| 1165 | /* If this target supports long section names, they must be put into |
| 1166 | the string table. This is supported by PE. This code must |
| 1167 | handle section names just as they are handled in |
| 1168 | coff_write_object_contents. */ |
| 1169 | if (bfd_coff_long_section_names (abfd)) |
| 1170 | { |
| 1171 | asection *o; |
| 1172 | |
| 1173 | for (o = abfd->sections; o != NULL; o = o->next) |
| 1174 | { |
| 1175 | size_t len; |
| 1176 | |
| 1177 | len = strlen (o->name); |
| 1178 | if (len > SCNNMLEN) |
| 1179 | string_size += len + 1; |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | /* Seek to the right place */ |
| 1184 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
| 1185 | return FALSE; |
| 1186 | |
| 1187 | /* Output all the symbols we have */ |
| 1188 | |
| 1189 | written = 0; |
| 1190 | for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) |
| 1191 | { |
| 1192 | asymbol *symbol = *p; |
| 1193 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol); |
| 1194 | |
| 1195 | if (c_symbol == (coff_symbol_type *) NULL |
| 1196 | || c_symbol->native == (combined_entry_type *) NULL) |
| 1197 | { |
| 1198 | if (!coff_write_alien_symbol (abfd, symbol, &written, &string_size, |
| 1199 | &debug_string_section, |
| 1200 | &debug_string_size)) |
| 1201 | return FALSE; |
| 1202 | } |
| 1203 | else |
| 1204 | { |
| 1205 | if (!coff_write_native_symbol (abfd, c_symbol, &written, |
| 1206 | &string_size, &debug_string_section, |
| 1207 | &debug_string_size)) |
| 1208 | return FALSE; |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | obj_raw_syment_count (abfd) = written; |
| 1213 | |
| 1214 | /* Now write out strings */ |
| 1215 | |
| 1216 | if (string_size != 0) |
| 1217 | { |
| 1218 | unsigned int size = string_size + STRING_SIZE_SIZE; |
| 1219 | bfd_byte buffer[STRING_SIZE_SIZE]; |
| 1220 | |
| 1221 | #if STRING_SIZE_SIZE == 4 |
| 1222 | H_PUT_32 (abfd, size, buffer); |
| 1223 | #else |
| 1224 | #error Change H_PUT_32 |
| 1225 | #endif |
| 1226 | if (bfd_bwrite ((PTR) buffer, (bfd_size_type) sizeof (buffer), abfd) |
| 1227 | != sizeof (buffer)) |
| 1228 | return FALSE; |
| 1229 | |
| 1230 | /* Handle long section names. This code must handle section |
| 1231 | names just as they are handled in coff_write_object_contents. */ |
| 1232 | if (bfd_coff_long_section_names (abfd)) |
| 1233 | { |
| 1234 | asection *o; |
| 1235 | |
| 1236 | for (o = abfd->sections; o != NULL; o = o->next) |
| 1237 | { |
| 1238 | size_t len; |
| 1239 | |
| 1240 | len = strlen (o->name); |
| 1241 | if (len > SCNNMLEN) |
| 1242 | { |
| 1243 | if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd) |
| 1244 | != len + 1) |
| 1245 | return FALSE; |
| 1246 | } |
| 1247 | } |
| 1248 | } |
| 1249 | |
| 1250 | for (p = abfd->outsymbols, i = 0; |
| 1251 | i < limit; |
| 1252 | i++, p++) |
| 1253 | { |
| 1254 | asymbol *q = *p; |
| 1255 | size_t name_length = strlen (q->name); |
| 1256 | coff_symbol_type *c_symbol = coff_symbol_from (abfd, q); |
| 1257 | size_t maxlen; |
| 1258 | |
| 1259 | /* Figure out whether the symbol name should go in the string |
| 1260 | table. Symbol names that are short enough are stored |
| 1261 | directly in the syment structure. File names permit a |
| 1262 | different, longer, length in the syment structure. On |
| 1263 | XCOFF, some symbol names are stored in the .debug section |
| 1264 | rather than in the string table. */ |
| 1265 | |
| 1266 | if (c_symbol == NULL |
| 1267 | || c_symbol->native == NULL) |
| 1268 | { |
| 1269 | /* This is not a COFF symbol, so it certainly is not a |
| 1270 | file name, nor does it go in the .debug section. */ |
| 1271 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
| 1272 | } |
| 1273 | else if (bfd_coff_symname_in_debug (abfd, |
| 1274 | &c_symbol->native->u.syment)) |
| 1275 | { |
| 1276 | /* This symbol name is in the XCOFF .debug section. |
| 1277 | Don't write it into the string table. */ |
| 1278 | maxlen = name_length; |
| 1279 | } |
| 1280 | else if (c_symbol->native->u.syment.n_sclass == C_FILE |
| 1281 | && c_symbol->native->u.syment.n_numaux > 0) |
| 1282 | { |
| 1283 | if (bfd_coff_force_symnames_in_strings (abfd)) |
| 1284 | { |
| 1285 | if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6) |
| 1286 | return FALSE; |
| 1287 | } |
| 1288 | maxlen = bfd_coff_filnmlen (abfd); |
| 1289 | } |
| 1290 | else |
| 1291 | maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN; |
| 1292 | |
| 1293 | if (name_length > maxlen) |
| 1294 | { |
| 1295 | if (bfd_bwrite ((PTR) (q->name), (bfd_size_type) name_length + 1, |
| 1296 | abfd) != name_length + 1) |
| 1297 | return FALSE; |
| 1298 | } |
| 1299 | } |
| 1300 | } |
| 1301 | else |
| 1302 | { |
| 1303 | /* We would normally not write anything here, but we'll write |
| 1304 | out 4 so that any stupid coff reader which tries to read the |
| 1305 | string table even when there isn't one won't croak. */ |
| 1306 | unsigned int size = STRING_SIZE_SIZE; |
| 1307 | bfd_byte buffer[STRING_SIZE_SIZE]; |
| 1308 | |
| 1309 | #if STRING_SIZE_SIZE == 4 |
| 1310 | H_PUT_32 (abfd, size, buffer); |
| 1311 | #else |
| 1312 | #error Change H_PUT_32 |
| 1313 | #endif |
| 1314 | if (bfd_bwrite ((PTR) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd) |
| 1315 | != STRING_SIZE_SIZE) |
| 1316 | return FALSE; |
| 1317 | } |
| 1318 | |
| 1319 | /* Make sure the .debug section was created to be the correct size. |
| 1320 | We should create it ourselves on the fly, but we don't because |
| 1321 | BFD won't let us write to any section until we know how large all |
| 1322 | the sections are. We could still do it by making another pass |
| 1323 | over the symbols. FIXME. */ |
| 1324 | BFD_ASSERT (debug_string_size == 0 |
| 1325 | || (debug_string_section != (asection *) NULL |
| 1326 | && (BFD_ALIGN (debug_string_size, |
| 1327 | 1 << debug_string_section->alignment_power) |
| 1328 | == debug_string_section->size))); |
| 1329 | |
| 1330 | return TRUE; |
| 1331 | } |
| 1332 | |
| 1333 | bfd_boolean |
| 1334 | coff_write_linenumbers (abfd) |
| 1335 | bfd *abfd; |
| 1336 | { |
| 1337 | asection *s; |
| 1338 | bfd_size_type linesz; |
| 1339 | PTR buff; |
| 1340 | |
| 1341 | linesz = bfd_coff_linesz (abfd); |
| 1342 | buff = bfd_alloc (abfd, linesz); |
| 1343 | if (!buff) |
| 1344 | return FALSE; |
| 1345 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 1346 | { |
| 1347 | if (s->lineno_count) |
| 1348 | { |
| 1349 | asymbol **q = abfd->outsymbols; |
| 1350 | if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0) |
| 1351 | return FALSE; |
| 1352 | /* Find all the linenumbers in this section */ |
| 1353 | while (*q) |
| 1354 | { |
| 1355 | asymbol *p = *q; |
| 1356 | if (p->section->output_section == s) |
| 1357 | { |
| 1358 | alent *l = |
| 1359 | BFD_SEND (bfd_asymbol_bfd (p), _get_lineno, |
| 1360 | (bfd_asymbol_bfd (p), p)); |
| 1361 | if (l) |
| 1362 | { |
| 1363 | /* Found a linenumber entry, output */ |
| 1364 | struct internal_lineno out; |
| 1365 | memset ((PTR) & out, 0, sizeof (out)); |
| 1366 | out.l_lnno = 0; |
| 1367 | out.l_addr.l_symndx = l->u.offset; |
| 1368 | bfd_coff_swap_lineno_out (abfd, &out, buff); |
| 1369 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
| 1370 | != linesz) |
| 1371 | return FALSE; |
| 1372 | l++; |
| 1373 | while (l->line_number) |
| 1374 | { |
| 1375 | out.l_lnno = l->line_number; |
| 1376 | out.l_addr.l_symndx = l->u.offset; |
| 1377 | bfd_coff_swap_lineno_out (abfd, &out, buff); |
| 1378 | if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd) |
| 1379 | != linesz) |
| 1380 | return FALSE; |
| 1381 | l++; |
| 1382 | } |
| 1383 | } |
| 1384 | } |
| 1385 | q++; |
| 1386 | } |
| 1387 | } |
| 1388 | } |
| 1389 | bfd_release (abfd, buff); |
| 1390 | return TRUE; |
| 1391 | } |
| 1392 | |
| 1393 | alent * |
| 1394 | coff_get_lineno (ignore_abfd, symbol) |
| 1395 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
| 1396 | asymbol *symbol; |
| 1397 | { |
| 1398 | return coffsymbol (symbol)->lineno; |
| 1399 | } |
| 1400 | |
| 1401 | /* This function transforms the offsets into the symbol table into |
| 1402 | pointers to syments. */ |
| 1403 | |
| 1404 | static void |
| 1405 | coff_pointerize_aux (abfd, table_base, symbol, indaux, auxent) |
| 1406 | bfd *abfd; |
| 1407 | combined_entry_type *table_base; |
| 1408 | combined_entry_type *symbol; |
| 1409 | unsigned int indaux; |
| 1410 | combined_entry_type *auxent; |
| 1411 | { |
| 1412 | unsigned int type = symbol->u.syment.n_type; |
| 1413 | unsigned int class = symbol->u.syment.n_sclass; |
| 1414 | |
| 1415 | if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) |
| 1416 | { |
| 1417 | if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook) |
| 1418 | (abfd, table_base, symbol, indaux, auxent)) |
| 1419 | return; |
| 1420 | } |
| 1421 | |
| 1422 | /* Don't bother if this is a file or a section */ |
| 1423 | if (class == C_STAT && type == T_NULL) |
| 1424 | return; |
| 1425 | if (class == C_FILE) |
| 1426 | return; |
| 1427 | |
| 1428 | /* Otherwise patch up */ |
| 1429 | #define N_TMASK coff_data (abfd)->local_n_tmask |
| 1430 | #define N_BTSHFT coff_data (abfd)->local_n_btshft |
| 1431 | if ((ISFCN (type) || ISTAG (class) || class == C_BLOCK || class == C_FCN) |
| 1432 | && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0) |
| 1433 | { |
| 1434 | auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = |
| 1435 | table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; |
| 1436 | auxent->fix_end = 1; |
| 1437 | } |
| 1438 | /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can |
| 1439 | generate one, so we must be careful to ignore it. */ |
| 1440 | if (auxent->u.auxent.x_sym.x_tagndx.l > 0) |
| 1441 | { |
| 1442 | auxent->u.auxent.x_sym.x_tagndx.p = |
| 1443 | table_base + auxent->u.auxent.x_sym.x_tagndx.l; |
| 1444 | auxent->fix_tag = 1; |
| 1445 | } |
| 1446 | } |
| 1447 | |
| 1448 | /* Allocate space for the ".debug" section, and read it. |
| 1449 | We did not read the debug section until now, because |
| 1450 | we didn't want to go to the trouble until someone needed it. */ |
| 1451 | |
| 1452 | static char * |
| 1453 | build_debug_section (abfd) |
| 1454 | bfd *abfd; |
| 1455 | { |
| 1456 | char *debug_section; |
| 1457 | file_ptr position; |
| 1458 | bfd_size_type sec_size; |
| 1459 | |
| 1460 | asection *sect = bfd_get_section_by_name (abfd, ".debug"); |
| 1461 | |
| 1462 | if (!sect) |
| 1463 | { |
| 1464 | bfd_set_error (bfd_error_no_debug_section); |
| 1465 | return NULL; |
| 1466 | } |
| 1467 | |
| 1468 | sec_size = sect->size; |
| 1469 | debug_section = (PTR) bfd_alloc (abfd, sec_size); |
| 1470 | if (debug_section == NULL) |
| 1471 | return NULL; |
| 1472 | |
| 1473 | /* Seek to the beginning of the `.debug' section and read it. |
| 1474 | Save the current position first; it is needed by our caller. |
| 1475 | Then read debug section and reset the file pointer. */ |
| 1476 | |
| 1477 | position = bfd_tell (abfd); |
| 1478 | if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0 |
| 1479 | || bfd_bread (debug_section, sec_size, abfd) != sec_size |
| 1480 | || bfd_seek (abfd, position, SEEK_SET) != 0) |
| 1481 | return NULL; |
| 1482 | return debug_section; |
| 1483 | } |
| 1484 | |
| 1485 | /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be |
| 1486 | \0-terminated, but will not exceed 'maxlen' characters. The copy *will* |
| 1487 | be \0-terminated. */ |
| 1488 | static char * |
| 1489 | copy_name (abfd, name, maxlen) |
| 1490 | bfd *abfd; |
| 1491 | char *name; |
| 1492 | size_t maxlen; |
| 1493 | { |
| 1494 | size_t len; |
| 1495 | char *newname; |
| 1496 | |
| 1497 | for (len = 0; len < maxlen; ++len) |
| 1498 | { |
| 1499 | if (name[len] == '\0') |
| 1500 | { |
| 1501 | break; |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | if ((newname = (PTR) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL) |
| 1506 | return (NULL); |
| 1507 | strncpy (newname, name, len); |
| 1508 | newname[len] = '\0'; |
| 1509 | return newname; |
| 1510 | } |
| 1511 | |
| 1512 | /* Read in the external symbols. */ |
| 1513 | |
| 1514 | bfd_boolean |
| 1515 | _bfd_coff_get_external_symbols (abfd) |
| 1516 | bfd *abfd; |
| 1517 | { |
| 1518 | bfd_size_type symesz; |
| 1519 | bfd_size_type size; |
| 1520 | PTR syms; |
| 1521 | |
| 1522 | if (obj_coff_external_syms (abfd) != NULL) |
| 1523 | return TRUE; |
| 1524 | |
| 1525 | symesz = bfd_coff_symesz (abfd); |
| 1526 | |
| 1527 | size = obj_raw_syment_count (abfd) * symesz; |
| 1528 | |
| 1529 | syms = (PTR) bfd_malloc (size); |
| 1530 | if (syms == NULL && size != 0) |
| 1531 | return FALSE; |
| 1532 | |
| 1533 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
| 1534 | || bfd_bread (syms, size, abfd) != size) |
| 1535 | { |
| 1536 | if (syms != NULL) |
| 1537 | free (syms); |
| 1538 | return FALSE; |
| 1539 | } |
| 1540 | |
| 1541 | obj_coff_external_syms (abfd) = syms; |
| 1542 | |
| 1543 | return TRUE; |
| 1544 | } |
| 1545 | |
| 1546 | /* Read in the external strings. The strings are not loaded until |
| 1547 | they are needed. This is because we have no simple way of |
| 1548 | detecting a missing string table in an archive. */ |
| 1549 | |
| 1550 | const char * |
| 1551 | _bfd_coff_read_string_table (abfd) |
| 1552 | bfd *abfd; |
| 1553 | { |
| 1554 | char extstrsize[STRING_SIZE_SIZE]; |
| 1555 | bfd_size_type strsize; |
| 1556 | char *strings; |
| 1557 | file_ptr pos; |
| 1558 | |
| 1559 | if (obj_coff_strings (abfd) != NULL) |
| 1560 | return obj_coff_strings (abfd); |
| 1561 | |
| 1562 | if (obj_sym_filepos (abfd) == 0) |
| 1563 | { |
| 1564 | bfd_set_error (bfd_error_no_symbols); |
| 1565 | return NULL; |
| 1566 | } |
| 1567 | |
| 1568 | pos = obj_sym_filepos (abfd); |
| 1569 | pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd); |
| 1570 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) |
| 1571 | return NULL; |
| 1572 | |
| 1573 | if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd) |
| 1574 | != sizeof extstrsize) |
| 1575 | { |
| 1576 | if (bfd_get_error () != bfd_error_file_truncated) |
| 1577 | return NULL; |
| 1578 | |
| 1579 | /* There is no string table. */ |
| 1580 | strsize = STRING_SIZE_SIZE; |
| 1581 | } |
| 1582 | else |
| 1583 | { |
| 1584 | #if STRING_SIZE_SIZE == 4 |
| 1585 | strsize = H_GET_32 (abfd, extstrsize); |
| 1586 | #else |
| 1587 | #error Change H_GET_32 |
| 1588 | #endif |
| 1589 | } |
| 1590 | |
| 1591 | if (strsize < STRING_SIZE_SIZE) |
| 1592 | { |
| 1593 | (*_bfd_error_handler) |
| 1594 | (_("%B: bad string table size %lu"), abfd, (unsigned long) strsize); |
| 1595 | bfd_set_error (bfd_error_bad_value); |
| 1596 | return NULL; |
| 1597 | } |
| 1598 | |
| 1599 | strings = (char *) bfd_malloc (strsize); |
| 1600 | if (strings == NULL) |
| 1601 | return NULL; |
| 1602 | |
| 1603 | if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd) |
| 1604 | != strsize - STRING_SIZE_SIZE) |
| 1605 | { |
| 1606 | free (strings); |
| 1607 | return NULL; |
| 1608 | } |
| 1609 | |
| 1610 | obj_coff_strings (abfd) = strings; |
| 1611 | |
| 1612 | return strings; |
| 1613 | } |
| 1614 | |
| 1615 | /* Free up the external symbols and strings read from a COFF file. */ |
| 1616 | |
| 1617 | bfd_boolean |
| 1618 | _bfd_coff_free_symbols (abfd) |
| 1619 | bfd *abfd; |
| 1620 | { |
| 1621 | if (obj_coff_external_syms (abfd) != NULL |
| 1622 | && ! obj_coff_keep_syms (abfd)) |
| 1623 | { |
| 1624 | free (obj_coff_external_syms (abfd)); |
| 1625 | obj_coff_external_syms (abfd) = NULL; |
| 1626 | } |
| 1627 | if (obj_coff_strings (abfd) != NULL |
| 1628 | && ! obj_coff_keep_strings (abfd)) |
| 1629 | { |
| 1630 | free (obj_coff_strings (abfd)); |
| 1631 | obj_coff_strings (abfd) = NULL; |
| 1632 | } |
| 1633 | return TRUE; |
| 1634 | } |
| 1635 | |
| 1636 | /* Read a symbol table into freshly bfd_allocated memory, swap it, and |
| 1637 | knit the symbol names into a normalized form. By normalized here I |
| 1638 | mean that all symbols have an n_offset pointer that points to a null- |
| 1639 | terminated string. */ |
| 1640 | |
| 1641 | combined_entry_type * |
| 1642 | coff_get_normalized_symtab (abfd) |
| 1643 | bfd *abfd; |
| 1644 | { |
| 1645 | combined_entry_type *internal; |
| 1646 | combined_entry_type *internal_ptr; |
| 1647 | combined_entry_type *symbol_ptr; |
| 1648 | combined_entry_type *internal_end; |
| 1649 | size_t symesz; |
| 1650 | char *raw_src; |
| 1651 | char *raw_end; |
| 1652 | const char *string_table = NULL; |
| 1653 | char *debug_section = NULL; |
| 1654 | bfd_size_type size; |
| 1655 | |
| 1656 | if (obj_raw_syments (abfd) != NULL) |
| 1657 | return obj_raw_syments (abfd); |
| 1658 | |
| 1659 | size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type); |
| 1660 | internal = (combined_entry_type *) bfd_zalloc (abfd, size); |
| 1661 | if (internal == NULL && size != 0) |
| 1662 | return NULL; |
| 1663 | internal_end = internal + obj_raw_syment_count (abfd); |
| 1664 | |
| 1665 | if (! _bfd_coff_get_external_symbols (abfd)) |
| 1666 | return NULL; |
| 1667 | |
| 1668 | raw_src = (char *) obj_coff_external_syms (abfd); |
| 1669 | |
| 1670 | /* mark the end of the symbols */ |
| 1671 | symesz = bfd_coff_symesz (abfd); |
| 1672 | raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz; |
| 1673 | |
| 1674 | /* FIXME SOMEDAY. A string table size of zero is very weird, but |
| 1675 | probably possible. If one shows up, it will probably kill us. */ |
| 1676 | |
| 1677 | /* Swap all the raw entries */ |
| 1678 | for (internal_ptr = internal; |
| 1679 | raw_src < raw_end; |
| 1680 | raw_src += symesz, internal_ptr++) |
| 1681 | { |
| 1682 | |
| 1683 | unsigned int i; |
| 1684 | bfd_coff_swap_sym_in (abfd, (PTR) raw_src, |
| 1685 | (PTR) & internal_ptr->u.syment); |
| 1686 | symbol_ptr = internal_ptr; |
| 1687 | |
| 1688 | for (i = 0; |
| 1689 | i < symbol_ptr->u.syment.n_numaux; |
| 1690 | i++) |
| 1691 | { |
| 1692 | internal_ptr++; |
| 1693 | raw_src += symesz; |
| 1694 | bfd_coff_swap_aux_in (abfd, (PTR) raw_src, |
| 1695 | symbol_ptr->u.syment.n_type, |
| 1696 | symbol_ptr->u.syment.n_sclass, |
| 1697 | (int) i, symbol_ptr->u.syment.n_numaux, |
| 1698 | &(internal_ptr->u.auxent)); |
| 1699 | coff_pointerize_aux (abfd, internal, symbol_ptr, i, |
| 1700 | internal_ptr); |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | /* Free the raw symbols, but not the strings (if we have them). */ |
| 1705 | obj_coff_keep_strings (abfd) = TRUE; |
| 1706 | if (! _bfd_coff_free_symbols (abfd)) |
| 1707 | return NULL; |
| 1708 | |
| 1709 | for (internal_ptr = internal; internal_ptr < internal_end; |
| 1710 | internal_ptr++) |
| 1711 | { |
| 1712 | if (internal_ptr->u.syment.n_sclass == C_FILE |
| 1713 | && internal_ptr->u.syment.n_numaux > 0) |
| 1714 | { |
| 1715 | /* make a file symbol point to the name in the auxent, since |
| 1716 | the text ".file" is redundant */ |
| 1717 | if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0) |
| 1718 | { |
| 1719 | /* the filename is a long one, point into the string table */ |
| 1720 | if (string_table == NULL) |
| 1721 | { |
| 1722 | string_table = _bfd_coff_read_string_table (abfd); |
| 1723 | if (string_table == NULL) |
| 1724 | return NULL; |
| 1725 | } |
| 1726 | |
| 1727 | internal_ptr->u.syment._n._n_n._n_offset = |
| 1728 | ((long) |
| 1729 | (string_table |
| 1730 | + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset)); |
| 1731 | } |
| 1732 | else |
| 1733 | { |
| 1734 | /* Ordinary short filename, put into memory anyway. The |
| 1735 | Microsoft PE tools sometimes store a filename in |
| 1736 | multiple AUX entries. */ |
| 1737 | if (internal_ptr->u.syment.n_numaux > 1 |
| 1738 | && coff_data (abfd)->pe) |
| 1739 | { |
| 1740 | internal_ptr->u.syment._n._n_n._n_offset = |
| 1741 | ((long) |
| 1742 | copy_name (abfd, |
| 1743 | (internal_ptr + 1)->u.auxent.x_file.x_fname, |
| 1744 | internal_ptr->u.syment.n_numaux * symesz)); |
| 1745 | } |
| 1746 | else |
| 1747 | { |
| 1748 | internal_ptr->u.syment._n._n_n._n_offset = |
| 1749 | ((long) |
| 1750 | copy_name (abfd, |
| 1751 | (internal_ptr + 1)->u.auxent.x_file.x_fname, |
| 1752 | (size_t) bfd_coff_filnmlen (abfd))); |
| 1753 | } |
| 1754 | } |
| 1755 | } |
| 1756 | else |
| 1757 | { |
| 1758 | if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) |
| 1759 | { |
| 1760 | /* This is a "short" name. Make it long. */ |
| 1761 | size_t i; |
| 1762 | char *newstring; |
| 1763 | |
| 1764 | /* find the length of this string without walking into memory |
| 1765 | that isn't ours. */ |
| 1766 | for (i = 0; i < 8; ++i) |
| 1767 | if (internal_ptr->u.syment._n._n_name[i] == '\0') |
| 1768 | break; |
| 1769 | |
| 1770 | newstring = (PTR) bfd_zalloc (abfd, (bfd_size_type) (i + 1)); |
| 1771 | if (newstring == NULL) |
| 1772 | return (NULL); |
| 1773 | strncpy (newstring, internal_ptr->u.syment._n._n_name, i); |
| 1774 | internal_ptr->u.syment._n._n_n._n_offset = (long int) newstring; |
| 1775 | internal_ptr->u.syment._n._n_n._n_zeroes = 0; |
| 1776 | } |
| 1777 | else if (internal_ptr->u.syment._n._n_n._n_offset == 0) |
| 1778 | internal_ptr->u.syment._n._n_n._n_offset = (long int) ""; |
| 1779 | else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment)) |
| 1780 | { |
| 1781 | /* Long name already. Point symbol at the string in the |
| 1782 | table. */ |
| 1783 | if (string_table == NULL) |
| 1784 | { |
| 1785 | string_table = _bfd_coff_read_string_table (abfd); |
| 1786 | if (string_table == NULL) |
| 1787 | return NULL; |
| 1788 | } |
| 1789 | internal_ptr->u.syment._n._n_n._n_offset = |
| 1790 | ((long int) |
| 1791 | (string_table |
| 1792 | + internal_ptr->u.syment._n._n_n._n_offset)); |
| 1793 | } |
| 1794 | else |
| 1795 | { |
| 1796 | /* Long name in debug section. Very similar. */ |
| 1797 | if (debug_section == NULL) |
| 1798 | debug_section = build_debug_section (abfd); |
| 1799 | internal_ptr->u.syment._n._n_n._n_offset = (long int) |
| 1800 | (debug_section + internal_ptr->u.syment._n._n_n._n_offset); |
| 1801 | } |
| 1802 | } |
| 1803 | internal_ptr += internal_ptr->u.syment.n_numaux; |
| 1804 | } |
| 1805 | |
| 1806 | obj_raw_syments (abfd) = internal; |
| 1807 | BFD_ASSERT (obj_raw_syment_count (abfd) |
| 1808 | == (unsigned int) (internal_ptr - internal)); |
| 1809 | |
| 1810 | return (internal); |
| 1811 | } /* coff_get_normalized_symtab() */ |
| 1812 | |
| 1813 | long |
| 1814 | coff_get_reloc_upper_bound (abfd, asect) |
| 1815 | bfd *abfd; |
| 1816 | sec_ptr asect; |
| 1817 | { |
| 1818 | if (bfd_get_format (abfd) != bfd_object) |
| 1819 | { |
| 1820 | bfd_set_error (bfd_error_invalid_operation); |
| 1821 | return -1; |
| 1822 | } |
| 1823 | return (asect->reloc_count + 1) * sizeof (arelent *); |
| 1824 | } |
| 1825 | |
| 1826 | asymbol * |
| 1827 | coff_make_empty_symbol (abfd) |
| 1828 | bfd *abfd; |
| 1829 | { |
| 1830 | bfd_size_type amt = sizeof (coff_symbol_type); |
| 1831 | coff_symbol_type *new = (coff_symbol_type *) bfd_zalloc (abfd, amt); |
| 1832 | if (new == NULL) |
| 1833 | return (NULL); |
| 1834 | new->symbol.section = 0; |
| 1835 | new->native = 0; |
| 1836 | new->lineno = (alent *) NULL; |
| 1837 | new->done_lineno = FALSE; |
| 1838 | new->symbol.the_bfd = abfd; |
| 1839 | return &new->symbol; |
| 1840 | } |
| 1841 | |
| 1842 | /* Make a debugging symbol. */ |
| 1843 | |
| 1844 | asymbol * |
| 1845 | coff_bfd_make_debug_symbol (abfd, ptr, sz) |
| 1846 | bfd *abfd; |
| 1847 | PTR ptr ATTRIBUTE_UNUSED; |
| 1848 | unsigned long sz ATTRIBUTE_UNUSED; |
| 1849 | { |
| 1850 | bfd_size_type amt = sizeof (coff_symbol_type); |
| 1851 | coff_symbol_type *new = (coff_symbol_type *) bfd_alloc (abfd, amt); |
| 1852 | if (new == NULL) |
| 1853 | return (NULL); |
| 1854 | /* @@ The 10 is a guess at a plausible maximum number of aux entries |
| 1855 | (but shouldn't be a constant). */ |
| 1856 | amt = sizeof (combined_entry_type) * 10; |
| 1857 | new->native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
| 1858 | if (!new->native) |
| 1859 | return (NULL); |
| 1860 | new->symbol.section = bfd_abs_section_ptr; |
| 1861 | new->symbol.flags = BSF_DEBUGGING; |
| 1862 | new->lineno = (alent *) NULL; |
| 1863 | new->done_lineno = FALSE; |
| 1864 | new->symbol.the_bfd = abfd; |
| 1865 | return &new->symbol; |
| 1866 | } |
| 1867 | |
| 1868 | void |
| 1869 | coff_get_symbol_info (abfd, symbol, ret) |
| 1870 | bfd *abfd; |
| 1871 | asymbol *symbol; |
| 1872 | symbol_info *ret; |
| 1873 | { |
| 1874 | bfd_symbol_info (symbol, ret); |
| 1875 | if (coffsymbol (symbol)->native != NULL |
| 1876 | && coffsymbol (symbol)->native->fix_value) |
| 1877 | { |
| 1878 | ret->value = coffsymbol (symbol)->native->u.syment.n_value - |
| 1879 | (unsigned long) obj_raw_syments (abfd); |
| 1880 | } |
| 1881 | } |
| 1882 | |
| 1883 | /* Return the COFF syment for a symbol. */ |
| 1884 | |
| 1885 | bfd_boolean |
| 1886 | bfd_coff_get_syment (abfd, symbol, psyment) |
| 1887 | bfd *abfd; |
| 1888 | asymbol *symbol; |
| 1889 | struct internal_syment *psyment; |
| 1890 | { |
| 1891 | coff_symbol_type *csym; |
| 1892 | |
| 1893 | csym = coff_symbol_from (abfd, symbol); |
| 1894 | if (csym == NULL || csym->native == NULL) |
| 1895 | { |
| 1896 | bfd_set_error (bfd_error_invalid_operation); |
| 1897 | return FALSE; |
| 1898 | } |
| 1899 | |
| 1900 | *psyment = csym->native->u.syment; |
| 1901 | |
| 1902 | if (csym->native->fix_value) |
| 1903 | psyment->n_value = psyment->n_value - |
| 1904 | (unsigned long) obj_raw_syments (abfd); |
| 1905 | |
| 1906 | /* FIXME: We should handle fix_line here. */ |
| 1907 | |
| 1908 | return TRUE; |
| 1909 | } |
| 1910 | |
| 1911 | /* Return the COFF auxent for a symbol. */ |
| 1912 | |
| 1913 | bfd_boolean |
| 1914 | bfd_coff_get_auxent (abfd, symbol, indx, pauxent) |
| 1915 | bfd *abfd; |
| 1916 | asymbol *symbol; |
| 1917 | int indx; |
| 1918 | union internal_auxent *pauxent; |
| 1919 | { |
| 1920 | coff_symbol_type *csym; |
| 1921 | combined_entry_type *ent; |
| 1922 | |
| 1923 | csym = coff_symbol_from (abfd, symbol); |
| 1924 | |
| 1925 | if (csym == NULL |
| 1926 | || csym->native == NULL |
| 1927 | || indx >= csym->native->u.syment.n_numaux) |
| 1928 | { |
| 1929 | bfd_set_error (bfd_error_invalid_operation); |
| 1930 | return FALSE; |
| 1931 | } |
| 1932 | |
| 1933 | ent = csym->native + indx + 1; |
| 1934 | |
| 1935 | *pauxent = ent->u.auxent; |
| 1936 | |
| 1937 | if (ent->fix_tag) |
| 1938 | pauxent->x_sym.x_tagndx.l = |
| 1939 | ((combined_entry_type *) pauxent->x_sym.x_tagndx.p |
| 1940 | - obj_raw_syments (abfd)); |
| 1941 | |
| 1942 | if (ent->fix_end) |
| 1943 | pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l = |
| 1944 | ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p |
| 1945 | - obj_raw_syments (abfd)); |
| 1946 | |
| 1947 | if (ent->fix_scnlen) |
| 1948 | pauxent->x_csect.x_scnlen.l = |
| 1949 | ((combined_entry_type *) pauxent->x_csect.x_scnlen.p |
| 1950 | - obj_raw_syments (abfd)); |
| 1951 | |
| 1952 | return TRUE; |
| 1953 | } |
| 1954 | |
| 1955 | /* Print out information about COFF symbol. */ |
| 1956 | |
| 1957 | void |
| 1958 | coff_print_symbol (abfd, filep, symbol, how) |
| 1959 | bfd *abfd; |
| 1960 | PTR filep; |
| 1961 | asymbol *symbol; |
| 1962 | bfd_print_symbol_type how; |
| 1963 | { |
| 1964 | FILE *file = (FILE *) filep; |
| 1965 | |
| 1966 | switch (how) |
| 1967 | { |
| 1968 | case bfd_print_symbol_name: |
| 1969 | fprintf (file, "%s", symbol->name); |
| 1970 | break; |
| 1971 | |
| 1972 | case bfd_print_symbol_more: |
| 1973 | fprintf (file, "coff %s %s", |
| 1974 | coffsymbol (symbol)->native ? "n" : "g", |
| 1975 | coffsymbol (symbol)->lineno ? "l" : " "); |
| 1976 | break; |
| 1977 | |
| 1978 | case bfd_print_symbol_all: |
| 1979 | if (coffsymbol (symbol)->native) |
| 1980 | { |
| 1981 | bfd_vma val; |
| 1982 | unsigned int aux; |
| 1983 | combined_entry_type *combined = coffsymbol (symbol)->native; |
| 1984 | combined_entry_type *root = obj_raw_syments (abfd); |
| 1985 | struct lineno_cache_entry *l = coffsymbol (symbol)->lineno; |
| 1986 | |
| 1987 | fprintf (file, "[%3ld]", (long) (combined - root)); |
| 1988 | |
| 1989 | if (! combined->fix_value) |
| 1990 | val = (bfd_vma) combined->u.syment.n_value; |
| 1991 | else |
| 1992 | val = combined->u.syment.n_value - (unsigned long) root; |
| 1993 | |
| 1994 | #ifndef XCOFF64 |
| 1995 | fprintf (file, |
| 1996 | "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%08lx %s", |
| 1997 | combined->u.syment.n_scnum, |
| 1998 | combined->u.syment.n_flags, |
| 1999 | combined->u.syment.n_type, |
| 2000 | combined->u.syment.n_sclass, |
| 2001 | combined->u.syment.n_numaux, |
| 2002 | (unsigned long) val, |
| 2003 | symbol->name); |
| 2004 | #else |
| 2005 | /* Print out the wide, 64 bit, symbol value */ |
| 2006 | fprintf (file, |
| 2007 | "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x%016llx %s", |
| 2008 | combined->u.syment.n_scnum, |
| 2009 | combined->u.syment.n_flags, |
| 2010 | combined->u.syment.n_type, |
| 2011 | combined->u.syment.n_sclass, |
| 2012 | combined->u.syment.n_numaux, |
| 2013 | val, |
| 2014 | symbol->name); |
| 2015 | #endif |
| 2016 | |
| 2017 | for (aux = 0; aux < combined->u.syment.n_numaux; aux++) |
| 2018 | { |
| 2019 | combined_entry_type *auxp = combined + aux + 1; |
| 2020 | long tagndx; |
| 2021 | |
| 2022 | if (auxp->fix_tag) |
| 2023 | tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root; |
| 2024 | else |
| 2025 | tagndx = auxp->u.auxent.x_sym.x_tagndx.l; |
| 2026 | |
| 2027 | fprintf (file, "\n"); |
| 2028 | |
| 2029 | if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux)) |
| 2030 | continue; |
| 2031 | |
| 2032 | switch (combined->u.syment.n_sclass) |
| 2033 | { |
| 2034 | case C_FILE: |
| 2035 | fprintf (file, "File "); |
| 2036 | break; |
| 2037 | |
| 2038 | case C_STAT: |
| 2039 | if (combined->u.syment.n_type == T_NULL) |
| 2040 | /* probably a section symbol? */ |
| 2041 | { |
| 2042 | fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d", |
| 2043 | (long) auxp->u.auxent.x_scn.x_scnlen, |
| 2044 | auxp->u.auxent.x_scn.x_nreloc, |
| 2045 | auxp->u.auxent.x_scn.x_nlinno); |
| 2046 | if (auxp->u.auxent.x_scn.x_checksum != 0 |
| 2047 | || auxp->u.auxent.x_scn.x_associated != 0 |
| 2048 | || auxp->u.auxent.x_scn.x_comdat != 0) |
| 2049 | fprintf (file, " checksum 0x%lx assoc %d comdat %d", |
| 2050 | auxp->u.auxent.x_scn.x_checksum, |
| 2051 | auxp->u.auxent.x_scn.x_associated, |
| 2052 | auxp->u.auxent.x_scn.x_comdat); |
| 2053 | break; |
| 2054 | } |
| 2055 | /* else fall through */ |
| 2056 | case C_EXT: |
| 2057 | if (ISFCN (combined->u.syment.n_type)) |
| 2058 | { |
| 2059 | long next, llnos; |
| 2060 | |
| 2061 | if (auxp->fix_end) |
| 2062 | next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p |
| 2063 | - root); |
| 2064 | else |
| 2065 | next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l; |
| 2066 | llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr; |
| 2067 | fprintf (file, |
| 2068 | "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld", |
| 2069 | tagndx, auxp->u.auxent.x_sym.x_misc.x_fsize, |
| 2070 | llnos, next); |
| 2071 | break; |
| 2072 | } |
| 2073 | /* else fall through */ |
| 2074 | default: |
| 2075 | fprintf (file, "AUX lnno %d size 0x%x tagndx %ld", |
| 2076 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno, |
| 2077 | auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size, |
| 2078 | tagndx); |
| 2079 | if (auxp->fix_end) |
| 2080 | fprintf (file, " endndx %ld", |
| 2081 | ((long) |
| 2082 | (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p |
| 2083 | - root))); |
| 2084 | break; |
| 2085 | } |
| 2086 | } |
| 2087 | |
| 2088 | if (l) |
| 2089 | { |
| 2090 | fprintf (file, "\n%s :", l->u.sym->name); |
| 2091 | l++; |
| 2092 | while (l->line_number) |
| 2093 | { |
| 2094 | fprintf (file, "\n%4d : 0x%lx", |
| 2095 | l->line_number, |
| 2096 | ((unsigned long) |
| 2097 | (l->u.offset + symbol->section->vma))); |
| 2098 | l++; |
| 2099 | } |
| 2100 | } |
| 2101 | } |
| 2102 | else |
| 2103 | { |
| 2104 | bfd_print_symbol_vandf (abfd, (PTR) file, symbol); |
| 2105 | fprintf (file, " %-5s %s %s %s", |
| 2106 | symbol->section->name, |
| 2107 | coffsymbol (symbol)->native ? "n" : "g", |
| 2108 | coffsymbol (symbol)->lineno ? "l" : " ", |
| 2109 | symbol->name); |
| 2110 | } |
| 2111 | } |
| 2112 | } |
| 2113 | |
| 2114 | /* Return whether a symbol name implies a local symbol. In COFF, |
| 2115 | local symbols generally start with ``.L''. Most targets use this |
| 2116 | function for the is_local_label_name entry point, but some may |
| 2117 | override it. */ |
| 2118 | |
| 2119 | bfd_boolean |
| 2120 | _bfd_coff_is_local_label_name (abfd, name) |
| 2121 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2122 | const char *name; |
| 2123 | { |
| 2124 | return name[0] == '.' && name[1] == 'L'; |
| 2125 | } |
| 2126 | |
| 2127 | /* Provided a BFD, a section and an offset (in bytes, not octets) into the |
| 2128 | section, calculate and return the name of the source file and the line |
| 2129 | nearest to the wanted location. */ |
| 2130 | |
| 2131 | bfd_boolean |
| 2132 | coff_find_nearest_line (abfd, section, symbols, offset, filename_ptr, |
| 2133 | functionname_ptr, line_ptr) |
| 2134 | bfd *abfd; |
| 2135 | asection *section; |
| 2136 | asymbol **symbols; |
| 2137 | bfd_vma offset; |
| 2138 | const char **filename_ptr; |
| 2139 | const char **functionname_ptr; |
| 2140 | unsigned int *line_ptr; |
| 2141 | { |
| 2142 | bfd_boolean found; |
| 2143 | unsigned int i; |
| 2144 | unsigned int line_base; |
| 2145 | coff_data_type *cof = coff_data (abfd); |
| 2146 | /* Run through the raw syments if available */ |
| 2147 | combined_entry_type *p; |
| 2148 | combined_entry_type *pend; |
| 2149 | alent *l; |
| 2150 | struct coff_section_tdata *sec_data; |
| 2151 | bfd_size_type amt; |
| 2152 | |
| 2153 | /* Before looking through the symbol table, try to use a .stab |
| 2154 | section to find the information. */ |
| 2155 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
| 2156 | &found, filename_ptr, |
| 2157 | functionname_ptr, line_ptr, |
| 2158 | &coff_data(abfd)->line_info)) |
| 2159 | return FALSE; |
| 2160 | |
| 2161 | if (found) |
| 2162 | return TRUE; |
| 2163 | |
| 2164 | /* Also try examining DWARF2 debugging information. */ |
| 2165 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
| 2166 | filename_ptr, functionname_ptr, |
| 2167 | line_ptr, 0, |
| 2168 | &coff_data(abfd)->dwarf2_find_line_info)) |
| 2169 | return TRUE; |
| 2170 | |
| 2171 | *filename_ptr = 0; |
| 2172 | *functionname_ptr = 0; |
| 2173 | *line_ptr = 0; |
| 2174 | |
| 2175 | /* Don't try and find line numbers in a non coff file */ |
| 2176 | if (!bfd_family_coff (abfd)) |
| 2177 | return FALSE; |
| 2178 | |
| 2179 | if (cof == NULL) |
| 2180 | return FALSE; |
| 2181 | |
| 2182 | /* Find the first C_FILE symbol. */ |
| 2183 | p = cof->raw_syments; |
| 2184 | if (!p) |
| 2185 | return FALSE; |
| 2186 | |
| 2187 | pend = p + cof->raw_syment_count; |
| 2188 | while (p < pend) |
| 2189 | { |
| 2190 | if (p->u.syment.n_sclass == C_FILE) |
| 2191 | break; |
| 2192 | p += 1 + p->u.syment.n_numaux; |
| 2193 | } |
| 2194 | |
| 2195 | if (p < pend) |
| 2196 | { |
| 2197 | bfd_vma sec_vma; |
| 2198 | bfd_vma maxdiff; |
| 2199 | |
| 2200 | /* Look through the C_FILE symbols to find the best one. */ |
| 2201 | sec_vma = bfd_get_section_vma (abfd, section); |
| 2202 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
| 2203 | maxdiff = (bfd_vma) 0 - (bfd_vma) 1; |
| 2204 | while (1) |
| 2205 | { |
| 2206 | combined_entry_type *p2; |
| 2207 | |
| 2208 | for (p2 = p + 1 + p->u.syment.n_numaux; |
| 2209 | p2 < pend; |
| 2210 | p2 += 1 + p2->u.syment.n_numaux) |
| 2211 | { |
| 2212 | if (p2->u.syment.n_scnum > 0 |
| 2213 | && (section |
| 2214 | == coff_section_from_bfd_index (abfd, |
| 2215 | p2->u.syment.n_scnum))) |
| 2216 | break; |
| 2217 | if (p2->u.syment.n_sclass == C_FILE) |
| 2218 | { |
| 2219 | p2 = pend; |
| 2220 | break; |
| 2221 | } |
| 2222 | } |
| 2223 | |
| 2224 | /* We use <= MAXDIFF here so that if we get a zero length |
| 2225 | file, we actually use the next file entry. */ |
| 2226 | if (p2 < pend |
| 2227 | && offset + sec_vma >= (bfd_vma) p2->u.syment.n_value |
| 2228 | && offset + sec_vma - (bfd_vma) p2->u.syment.n_value <= maxdiff) |
| 2229 | { |
| 2230 | *filename_ptr = (char *) p->u.syment._n._n_n._n_offset; |
| 2231 | maxdiff = offset + sec_vma - p2->u.syment.n_value; |
| 2232 | } |
| 2233 | |
| 2234 | /* Avoid endless loops on erroneous files by ensuring that |
| 2235 | we always move forward in the file. */ |
| 2236 | if (p >= cof->raw_syments + p->u.syment.n_value) |
| 2237 | break; |
| 2238 | |
| 2239 | p = cof->raw_syments + p->u.syment.n_value; |
| 2240 | if (p > pend || p->u.syment.n_sclass != C_FILE) |
| 2241 | break; |
| 2242 | } |
| 2243 | } |
| 2244 | |
| 2245 | /* Now wander though the raw linenumbers of the section */ |
| 2246 | /* If we have been called on this section before, and the offset we |
| 2247 | want is further down then we can prime the lookup loop. */ |
| 2248 | sec_data = coff_section_data (abfd, section); |
| 2249 | if (sec_data != NULL |
| 2250 | && sec_data->i > 0 |
| 2251 | && offset >= sec_data->offset) |
| 2252 | { |
| 2253 | i = sec_data->i; |
| 2254 | *functionname_ptr = sec_data->function; |
| 2255 | line_base = sec_data->line_base; |
| 2256 | } |
| 2257 | else |
| 2258 | { |
| 2259 | i = 0; |
| 2260 | line_base = 0; |
| 2261 | } |
| 2262 | |
| 2263 | if (section->lineno != NULL) |
| 2264 | { |
| 2265 | bfd_vma last_value = 0; |
| 2266 | |
| 2267 | l = §ion->lineno[i]; |
| 2268 | |
| 2269 | for (; i < section->lineno_count; i++) |
| 2270 | { |
| 2271 | if (l->line_number == 0) |
| 2272 | { |
| 2273 | /* Get the symbol this line number points at */ |
| 2274 | coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym); |
| 2275 | if (coff->symbol.value > offset) |
| 2276 | break; |
| 2277 | *functionname_ptr = coff->symbol.name; |
| 2278 | last_value = coff->symbol.value; |
| 2279 | if (coff->native) |
| 2280 | { |
| 2281 | combined_entry_type *s = coff->native; |
| 2282 | s = s + 1 + s->u.syment.n_numaux; |
| 2283 | |
| 2284 | /* In XCOFF a debugging symbol can follow the |
| 2285 | function symbol. */ |
| 2286 | if (s->u.syment.n_scnum == N_DEBUG) |
| 2287 | s = s + 1 + s->u.syment.n_numaux; |
| 2288 | |
| 2289 | /* S should now point to the .bf of the function. */ |
| 2290 | if (s->u.syment.n_numaux) |
| 2291 | { |
| 2292 | /* The linenumber is stored in the auxent. */ |
| 2293 | union internal_auxent *a = &((s + 1)->u.auxent); |
| 2294 | line_base = a->x_sym.x_misc.x_lnsz.x_lnno; |
| 2295 | *line_ptr = line_base; |
| 2296 | } |
| 2297 | } |
| 2298 | } |
| 2299 | else |
| 2300 | { |
| 2301 | if (l->u.offset > offset) |
| 2302 | break; |
| 2303 | *line_ptr = l->line_number + line_base - 1; |
| 2304 | } |
| 2305 | l++; |
| 2306 | } |
| 2307 | |
| 2308 | /* If we fell off the end of the loop, then assume that this |
| 2309 | symbol has no line number info. Otherwise, symbols with no |
| 2310 | line number info get reported with the line number of the |
| 2311 | last line of the last symbol which does have line number |
| 2312 | info. We use 0x100 as a slop to account for cases where the |
| 2313 | last line has executable code. */ |
| 2314 | if (i >= section->lineno_count |
| 2315 | && last_value != 0 |
| 2316 | && offset - last_value > 0x100) |
| 2317 | { |
| 2318 | *functionname_ptr = NULL; |
| 2319 | *line_ptr = 0; |
| 2320 | } |
| 2321 | } |
| 2322 | |
| 2323 | /* Cache the results for the next call. */ |
| 2324 | if (sec_data == NULL && section->owner == abfd) |
| 2325 | { |
| 2326 | amt = sizeof (struct coff_section_tdata); |
| 2327 | section->used_by_bfd = (PTR) bfd_zalloc (abfd, amt); |
| 2328 | sec_data = (struct coff_section_tdata *) section->used_by_bfd; |
| 2329 | } |
| 2330 | if (sec_data != NULL) |
| 2331 | { |
| 2332 | sec_data->offset = offset; |
| 2333 | sec_data->i = i; |
| 2334 | sec_data->function = *functionname_ptr; |
| 2335 | sec_data->line_base = line_base; |
| 2336 | } |
| 2337 | |
| 2338 | return TRUE; |
| 2339 | } |
| 2340 | |
| 2341 | int |
| 2342 | coff_sizeof_headers (abfd, reloc) |
| 2343 | bfd *abfd; |
| 2344 | bfd_boolean reloc; |
| 2345 | { |
| 2346 | size_t size; |
| 2347 | |
| 2348 | if (! reloc) |
| 2349 | { |
| 2350 | size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd); |
| 2351 | } |
| 2352 | else |
| 2353 | { |
| 2354 | size = bfd_coff_filhsz (abfd); |
| 2355 | } |
| 2356 | |
| 2357 | size += abfd->section_count * bfd_coff_scnhsz (abfd); |
| 2358 | return size; |
| 2359 | } |
| 2360 | |
| 2361 | /* Change the class of a coff symbol held by BFD. */ |
| 2362 | bfd_boolean |
| 2363 | bfd_coff_set_symbol_class (abfd, symbol, class) |
| 2364 | bfd * abfd; |
| 2365 | asymbol * symbol; |
| 2366 | unsigned int class; |
| 2367 | { |
| 2368 | coff_symbol_type * csym; |
| 2369 | |
| 2370 | csym = coff_symbol_from (abfd, symbol); |
| 2371 | if (csym == NULL) |
| 2372 | { |
| 2373 | bfd_set_error (bfd_error_invalid_operation); |
| 2374 | return FALSE; |
| 2375 | } |
| 2376 | else if (csym->native == NULL) |
| 2377 | { |
| 2378 | /* This is an alien symbol which no native coff backend data. |
| 2379 | We cheat here by creating a fake native entry for it and |
| 2380 | then filling in the class. This code is based on that in |
| 2381 | coff_write_alien_symbol(). */ |
| 2382 | |
| 2383 | combined_entry_type * native; |
| 2384 | bfd_size_type amt = sizeof (* native); |
| 2385 | |
| 2386 | native = (combined_entry_type *) bfd_zalloc (abfd, amt); |
| 2387 | if (native == NULL) |
| 2388 | return FALSE; |
| 2389 | |
| 2390 | native->u.syment.n_type = T_NULL; |
| 2391 | native->u.syment.n_sclass = class; |
| 2392 | |
| 2393 | if (bfd_is_und_section (symbol->section)) |
| 2394 | { |
| 2395 | native->u.syment.n_scnum = N_UNDEF; |
| 2396 | native->u.syment.n_value = symbol->value; |
| 2397 | } |
| 2398 | else if (bfd_is_com_section (symbol->section)) |
| 2399 | { |
| 2400 | native->u.syment.n_scnum = N_UNDEF; |
| 2401 | native->u.syment.n_value = symbol->value; |
| 2402 | } |
| 2403 | else |
| 2404 | { |
| 2405 | native->u.syment.n_scnum = |
| 2406 | symbol->section->output_section->target_index; |
| 2407 | native->u.syment.n_value = (symbol->value |
| 2408 | + symbol->section->output_offset); |
| 2409 | if (! obj_pe (abfd)) |
| 2410 | native->u.syment.n_value += symbol->section->output_section->vma; |
| 2411 | |
| 2412 | /* Copy the any flags from the file header into the symbol. |
| 2413 | FIXME: Why? */ |
| 2414 | native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags; |
| 2415 | } |
| 2416 | |
| 2417 | csym->native = native; |
| 2418 | } |
| 2419 | else |
| 2420 | { |
| 2421 | csym->native->u.syment.n_sclass = class; |
| 2422 | } |
| 2423 | |
| 2424 | return TRUE; |
| 2425 | } |
| 2426 | |
| 2427 | struct coff_comdat_info * |
| 2428 | bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec) |
| 2429 | { |
| 2430 | if (bfd_get_flavour (abfd) == bfd_target_coff_flavour) |
| 2431 | return coff_section_data (abfd, sec)->comdat; |
| 2432 | else |
| 2433 | return NULL; |
| 2434 | } |