ecofflink.c revision 1.1.1.2
1 /* Routines to link ECOFF debugging information. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. 4 Written by Ian Lance Taylor, Cygnus Support, <ian (at) cygnus.com>. 5 6 This file is part of BFD, the Binary File Descriptor library. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 MA 02110-1301, USA. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "bfdlink.h" 26 #include "libbfd.h" 27 #include "objalloc.h" 28 #include "aout/stab_gnu.h" 29 #include "coff/internal.h" 30 #include "coff/sym.h" 31 #include "coff/symconst.h" 32 #include "coff/ecoff.h" 33 #include "libcoff.h" 34 #include "libecoff.h" 35 36 static bfd_boolean ecoff_add_bytes 38 PARAMS ((char **buf, char **bufend, size_t need)); 39 static struct bfd_hash_entry *string_hash_newfunc 40 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, 41 const char *)); 42 static void ecoff_align_debug 43 PARAMS ((bfd *abfd, struct ecoff_debug_info *debug, 44 const struct ecoff_debug_swap *swap)); 45 static bfd_boolean ecoff_write_symhdr 46 PARAMS ((bfd *, struct ecoff_debug_info *, const struct ecoff_debug_swap *, 47 file_ptr where)); 48 static int cmp_fdrtab_entry 49 PARAMS ((const PTR, const PTR)); 50 static bfd_boolean mk_fdrtab 51 PARAMS ((bfd *, struct ecoff_debug_info * const, 52 const struct ecoff_debug_swap * const, struct ecoff_find_line *)); 53 static long fdrtab_lookup 54 PARAMS ((struct ecoff_find_line *, bfd_vma)); 55 static bfd_boolean lookup_line 56 PARAMS ((bfd *, struct ecoff_debug_info * const, 57 const struct ecoff_debug_swap * const, struct ecoff_find_line *)); 58 59 /* Routines to swap auxiliary information in and out. I am assuming 61 that the auxiliary information format is always going to be target 62 independent. */ 63 64 /* Swap in a type information record. 65 BIGEND says whether AUX symbols are big-endian or little-endian; this 66 info comes from the file header record (fh-fBigendian). */ 67 68 void 69 _bfd_ecoff_swap_tir_in (bigend, ext_copy, intern) 70 int bigend; 71 const struct tir_ext *ext_copy; 72 TIR *intern; 73 { 74 struct tir_ext ext[1]; 75 76 *ext = *ext_copy; /* Make it reasonable to do in-place. */ 77 78 /* now the fun stuff... */ 79 if (bigend) { 80 intern->fBitfield = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_BIG); 81 intern->continued = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_BIG); 82 intern->bt = (ext->t_bits1[0] & TIR_BITS1_BT_BIG) 83 >> TIR_BITS1_BT_SH_BIG; 84 intern->tq4 = (ext->t_tq45[0] & TIR_BITS_TQ4_BIG) 85 >> TIR_BITS_TQ4_SH_BIG; 86 intern->tq5 = (ext->t_tq45[0] & TIR_BITS_TQ5_BIG) 87 >> TIR_BITS_TQ5_SH_BIG; 88 intern->tq0 = (ext->t_tq01[0] & TIR_BITS_TQ0_BIG) 89 >> TIR_BITS_TQ0_SH_BIG; 90 intern->tq1 = (ext->t_tq01[0] & TIR_BITS_TQ1_BIG) 91 >> TIR_BITS_TQ1_SH_BIG; 92 intern->tq2 = (ext->t_tq23[0] & TIR_BITS_TQ2_BIG) 93 >> TIR_BITS_TQ2_SH_BIG; 94 intern->tq3 = (ext->t_tq23[0] & TIR_BITS_TQ3_BIG) 95 >> TIR_BITS_TQ3_SH_BIG; 96 } else { 97 intern->fBitfield = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_LITTLE); 98 intern->continued = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_LITTLE); 99 intern->bt = (ext->t_bits1[0] & TIR_BITS1_BT_LITTLE) 100 >> TIR_BITS1_BT_SH_LITTLE; 101 intern->tq4 = (ext->t_tq45[0] & TIR_BITS_TQ4_LITTLE) 102 >> TIR_BITS_TQ4_SH_LITTLE; 103 intern->tq5 = (ext->t_tq45[0] & TIR_BITS_TQ5_LITTLE) 104 >> TIR_BITS_TQ5_SH_LITTLE; 105 intern->tq0 = (ext->t_tq01[0] & TIR_BITS_TQ0_LITTLE) 106 >> TIR_BITS_TQ0_SH_LITTLE; 107 intern->tq1 = (ext->t_tq01[0] & TIR_BITS_TQ1_LITTLE) 108 >> TIR_BITS_TQ1_SH_LITTLE; 109 intern->tq2 = (ext->t_tq23[0] & TIR_BITS_TQ2_LITTLE) 110 >> TIR_BITS_TQ2_SH_LITTLE; 111 intern->tq3 = (ext->t_tq23[0] & TIR_BITS_TQ3_LITTLE) 112 >> TIR_BITS_TQ3_SH_LITTLE; 113 } 114 115 #ifdef TEST 116 if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0) 117 abort (); 118 #endif 119 } 120 121 /* Swap out a type information record. 122 BIGEND says whether AUX symbols are big-endian or little-endian; this 123 info comes from the file header record (fh-fBigendian). */ 124 125 void 126 _bfd_ecoff_swap_tir_out (bigend, intern_copy, ext) 127 int bigend; 128 const TIR *intern_copy; 129 struct tir_ext *ext; 130 { 131 TIR intern[1]; 132 133 *intern = *intern_copy; /* Make it reasonable to do in-place. */ 134 135 /* now the fun stuff... */ 136 if (bigend) { 137 ext->t_bits1[0] = ((intern->fBitfield ? TIR_BITS1_FBITFIELD_BIG : 0) 138 | (intern->continued ? TIR_BITS1_CONTINUED_BIG : 0) 139 | ((intern->bt << TIR_BITS1_BT_SH_BIG) 140 & TIR_BITS1_BT_BIG)); 141 ext->t_tq45[0] = (((intern->tq4 << TIR_BITS_TQ4_SH_BIG) 142 & TIR_BITS_TQ4_BIG) 143 | ((intern->tq5 << TIR_BITS_TQ5_SH_BIG) 144 & TIR_BITS_TQ5_BIG)); 145 ext->t_tq01[0] = (((intern->tq0 << TIR_BITS_TQ0_SH_BIG) 146 & TIR_BITS_TQ0_BIG) 147 | ((intern->tq1 << TIR_BITS_TQ1_SH_BIG) 148 & TIR_BITS_TQ1_BIG)); 149 ext->t_tq23[0] = (((intern->tq2 << TIR_BITS_TQ2_SH_BIG) 150 & TIR_BITS_TQ2_BIG) 151 | ((intern->tq3 << TIR_BITS_TQ3_SH_BIG) 152 & TIR_BITS_TQ3_BIG)); 153 } else { 154 ext->t_bits1[0] = ((intern->fBitfield ? TIR_BITS1_FBITFIELD_LITTLE : 0) 155 | (intern->continued ? TIR_BITS1_CONTINUED_LITTLE : 0) 156 | ((intern->bt << TIR_BITS1_BT_SH_LITTLE) 157 & TIR_BITS1_BT_LITTLE)); 158 ext->t_tq45[0] = (((intern->tq4 << TIR_BITS_TQ4_SH_LITTLE) 159 & TIR_BITS_TQ4_LITTLE) 160 | ((intern->tq5 << TIR_BITS_TQ5_SH_LITTLE) 161 & TIR_BITS_TQ5_LITTLE)); 162 ext->t_tq01[0] = (((intern->tq0 << TIR_BITS_TQ0_SH_LITTLE) 163 & TIR_BITS_TQ0_LITTLE) 164 | ((intern->tq1 << TIR_BITS_TQ1_SH_LITTLE) 165 & TIR_BITS_TQ1_LITTLE)); 166 ext->t_tq23[0] = (((intern->tq2 << TIR_BITS_TQ2_SH_LITTLE) 167 & TIR_BITS_TQ2_LITTLE) 168 | ((intern->tq3 << TIR_BITS_TQ3_SH_LITTLE) 169 & TIR_BITS_TQ3_LITTLE)); 170 } 171 172 #ifdef TEST 173 if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0) 174 abort (); 175 #endif 176 } 177 178 /* Swap in a relative symbol record. BIGEND says whether it is in 179 big-endian or little-endian format.*/ 180 181 void 182 _bfd_ecoff_swap_rndx_in (bigend, ext_copy, intern) 183 int bigend; 184 const struct rndx_ext *ext_copy; 185 RNDXR *intern; 186 { 187 struct rndx_ext ext[1]; 188 189 *ext = *ext_copy; /* Make it reasonable to do in-place. */ 190 191 /* now the fun stuff... */ 192 if (bigend) { 193 intern->rfd = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_BIG) 194 | ((ext->r_bits[1] & RNDX_BITS1_RFD_BIG) 195 >> RNDX_BITS1_RFD_SH_BIG); 196 intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_BIG) 197 << RNDX_BITS1_INDEX_SH_LEFT_BIG) 198 | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_BIG) 199 | (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_BIG); 200 } else { 201 intern->rfd = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_LITTLE) 202 | ((ext->r_bits[1] & RNDX_BITS1_RFD_LITTLE) 203 << RNDX_BITS1_RFD_SH_LEFT_LITTLE); 204 intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_LITTLE) 205 >> RNDX_BITS1_INDEX_SH_LITTLE) 206 | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_LITTLE) 207 | ((unsigned int) ext->r_bits[3] 208 << RNDX_BITS3_INDEX_SH_LEFT_LITTLE); 209 } 210 211 #ifdef TEST 212 if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0) 213 abort (); 214 #endif 215 } 216 217 /* Swap out a relative symbol record. BIGEND says whether it is in 218 big-endian or little-endian format.*/ 219 220 void 221 _bfd_ecoff_swap_rndx_out (bigend, intern_copy, ext) 222 int bigend; 223 const RNDXR *intern_copy; 224 struct rndx_ext *ext; 225 { 226 RNDXR intern[1]; 227 228 *intern = *intern_copy; /* Make it reasonable to do in-place. */ 229 230 /* now the fun stuff... */ 231 if (bigend) { 232 ext->r_bits[0] = intern->rfd >> RNDX_BITS0_RFD_SH_LEFT_BIG; 233 ext->r_bits[1] = (((intern->rfd << RNDX_BITS1_RFD_SH_BIG) 234 & RNDX_BITS1_RFD_BIG) 235 | ((intern->index >> RNDX_BITS1_INDEX_SH_LEFT_BIG) 236 & RNDX_BITS1_INDEX_BIG)); 237 ext->r_bits[2] = intern->index >> RNDX_BITS2_INDEX_SH_LEFT_BIG; 238 ext->r_bits[3] = intern->index >> RNDX_BITS3_INDEX_SH_LEFT_BIG; 239 } else { 240 ext->r_bits[0] = intern->rfd >> RNDX_BITS0_RFD_SH_LEFT_LITTLE; 241 ext->r_bits[1] = (((intern->rfd >> RNDX_BITS1_RFD_SH_LEFT_LITTLE) 242 & RNDX_BITS1_RFD_LITTLE) 243 | ((intern->index << RNDX_BITS1_INDEX_SH_LITTLE) 244 & RNDX_BITS1_INDEX_LITTLE)); 245 ext->r_bits[2] = intern->index >> RNDX_BITS2_INDEX_SH_LEFT_LITTLE; 246 ext->r_bits[3] = intern->index >> RNDX_BITS3_INDEX_SH_LEFT_LITTLE; 247 } 248 249 #ifdef TEST 250 if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0) 251 abort (); 252 #endif 253 } 254 255 /* The minimum amount of data to allocate. */ 257 #define ALLOC_SIZE (4064) 258 259 /* Add bytes to a buffer. Return success. */ 260 261 static bfd_boolean 262 ecoff_add_bytes (buf, bufend, need) 263 char **buf; 264 char **bufend; 265 size_t need; 266 { 267 size_t have; 268 size_t want; 269 char *newbuf; 270 271 have = *bufend - *buf; 272 if (have > need) 273 want = ALLOC_SIZE; 274 else 275 { 276 want = need - have; 277 if (want < ALLOC_SIZE) 278 want = ALLOC_SIZE; 279 } 280 newbuf = (char *) bfd_realloc (*buf, (bfd_size_type) have + want); 281 if (newbuf == NULL) 282 return FALSE; 283 *buf = newbuf; 284 *bufend = *buf + have + want; 285 return TRUE; 286 } 287 288 /* We keep a hash table which maps strings to numbers. We use it to 289 map FDR names to indices in the output file, and to map local 290 strings when combining stabs debugging information. */ 291 292 struct string_hash_entry 293 { 294 struct bfd_hash_entry root; 295 /* FDR index or string table offset. */ 296 long val; 297 /* Next entry in string table. */ 298 struct string_hash_entry *next; 299 }; 300 301 struct string_hash_table 302 { 303 struct bfd_hash_table table; 304 }; 305 306 /* Routine to create an entry in a string hash table. */ 307 308 static struct bfd_hash_entry * 309 string_hash_newfunc (entry, table, string) 310 struct bfd_hash_entry *entry; 311 struct bfd_hash_table *table; 312 const char *string; 313 { 314 struct string_hash_entry *ret = (struct string_hash_entry *) entry; 315 316 /* Allocate the structure if it has not already been allocated by a 317 subclass. */ 318 if (ret == (struct string_hash_entry *) NULL) 319 ret = ((struct string_hash_entry *) 320 bfd_hash_allocate (table, sizeof (struct string_hash_entry))); 321 if (ret == (struct string_hash_entry *) NULL) 322 return NULL; 323 324 /* Call the allocation method of the superclass. */ 325 ret = ((struct string_hash_entry *) 326 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); 327 328 if (ret) 329 { 330 /* Initialize the local fields. */ 331 ret->val = -1; 332 ret->next = NULL; 333 } 334 335 return (struct bfd_hash_entry *) ret; 336 } 337 338 /* Look up an entry in an string hash table. */ 339 340 #define string_hash_lookup(t, string, create, copy) \ 341 ((struct string_hash_entry *) \ 342 bfd_hash_lookup (&(t)->table, (string), (create), (copy))) 343 344 /* We can't afford to read in all the debugging information when we do 345 a link. Instead, we build a list of these structures to show how 346 different parts of the input file map to the output file. */ 347 348 struct shuffle 349 { 350 /* The next entry in this linked list. */ 351 struct shuffle *next; 352 /* The length of the information. */ 353 unsigned long size; 354 /* Whether this information comes from a file or not. */ 355 bfd_boolean filep; 356 union 357 { 358 struct 359 { 360 /* The BFD the data comes from. */ 361 bfd *input_bfd; 362 /* The offset within input_bfd. */ 363 file_ptr offset; 364 } file; 365 /* The data to be written out. */ 366 PTR memory; 367 } u; 368 }; 369 370 /* This structure holds information across calls to 371 bfd_ecoff_debug_accumulate. */ 372 373 struct accumulate 374 { 375 /* The FDR hash table. */ 376 struct string_hash_table fdr_hash; 377 /* The strings hash table. */ 378 struct string_hash_table str_hash; 379 /* Linked lists describing how to shuffle the input debug 380 information into the output file. We keep a pointer to both the 381 head and the tail. */ 382 struct shuffle *line; 383 struct shuffle *line_end; 384 struct shuffle *pdr; 385 struct shuffle *pdr_end; 386 struct shuffle *sym; 387 struct shuffle *sym_end; 388 struct shuffle *opt; 389 struct shuffle *opt_end; 390 struct shuffle *aux; 391 struct shuffle *aux_end; 392 struct shuffle *ss; 393 struct shuffle *ss_end; 394 struct string_hash_entry *ss_hash; 395 struct string_hash_entry *ss_hash_end; 396 struct shuffle *fdr; 397 struct shuffle *fdr_end; 398 struct shuffle *rfd; 399 struct shuffle *rfd_end; 400 /* The size of the largest file shuffle. */ 401 unsigned long largest_file_shuffle; 402 /* An objalloc for debugging information. */ 403 struct objalloc *memory; 404 }; 405 406 /* Add a file entry to a shuffle list. */ 407 408 static bfd_boolean add_file_shuffle 409 PARAMS ((struct accumulate *, struct shuffle **, struct shuffle **, 410 bfd *, file_ptr, unsigned long)); 411 412 static bfd_boolean 413 add_file_shuffle (ainfo, head, tail, input_bfd, offset, size) 414 struct accumulate *ainfo; 415 struct shuffle **head; 416 struct shuffle **tail; 417 bfd *input_bfd; 418 file_ptr offset; 419 unsigned long size; 420 { 421 struct shuffle *n; 422 423 if (*tail != (struct shuffle *) NULL 424 && (*tail)->filep 425 && (*tail)->u.file.input_bfd == input_bfd 426 && (*tail)->u.file.offset + (*tail)->size == (unsigned long) offset) 427 { 428 /* Just merge this entry onto the existing one. */ 429 (*tail)->size += size; 430 if ((*tail)->size > ainfo->largest_file_shuffle) 431 ainfo->largest_file_shuffle = (*tail)->size; 432 return TRUE; 433 } 434 435 n = (struct shuffle *) objalloc_alloc (ainfo->memory, 436 sizeof (struct shuffle)); 437 if (!n) 438 { 439 bfd_set_error (bfd_error_no_memory); 440 return FALSE; 441 } 442 n->next = NULL; 443 n->size = size; 444 n->filep = TRUE; 445 n->u.file.input_bfd = input_bfd; 446 n->u.file.offset = offset; 447 if (*head == (struct shuffle *) NULL) 448 *head = n; 449 if (*tail != (struct shuffle *) NULL) 450 (*tail)->next = n; 451 *tail = n; 452 if (size > ainfo->largest_file_shuffle) 453 ainfo->largest_file_shuffle = size; 454 return TRUE; 455 } 456 457 /* Add a memory entry to a shuffle list. */ 458 459 static bfd_boolean add_memory_shuffle 460 PARAMS ((struct accumulate *, struct shuffle **head, struct shuffle **tail, 461 bfd_byte *data, unsigned long size)); 462 463 static bfd_boolean 464 add_memory_shuffle (ainfo, head, tail, data, size) 465 struct accumulate *ainfo; 466 struct shuffle **head; 467 struct shuffle **tail; 468 bfd_byte *data; 469 unsigned long size; 470 { 471 struct shuffle *n; 472 473 n = (struct shuffle *) objalloc_alloc (ainfo->memory, 474 sizeof (struct shuffle)); 475 if (!n) 476 { 477 bfd_set_error (bfd_error_no_memory); 478 return FALSE; 479 } 480 n->next = NULL; 481 n->size = size; 482 n->filep = FALSE; 483 n->u.memory = (PTR) data; 484 if (*head == (struct shuffle *) NULL) 485 *head = n; 486 if (*tail != (struct shuffle *) NULL) 487 (*tail)->next = n; 488 *tail = n; 489 return TRUE; 490 } 491 492 /* Initialize the FDR hash table. This returns a handle which is then 493 passed in to bfd_ecoff_debug_accumulate, et. al. */ 494 495 PTR 496 bfd_ecoff_debug_init (output_bfd, output_debug, output_swap, info) 497 bfd *output_bfd ATTRIBUTE_UNUSED; 498 struct ecoff_debug_info *output_debug; 499 const struct ecoff_debug_swap *output_swap ATTRIBUTE_UNUSED; 500 struct bfd_link_info *info; 501 { 502 struct accumulate *ainfo; 503 bfd_size_type amt = sizeof (struct accumulate); 504 505 ainfo = (struct accumulate *) bfd_malloc (amt); 506 if (!ainfo) 507 return NULL; 508 if (!bfd_hash_table_init_n (&ainfo->fdr_hash.table, string_hash_newfunc, 509 sizeof (struct string_hash_entry), 1021)) 510 return NULL; 511 512 ainfo->line = NULL; 513 ainfo->line_end = NULL; 514 ainfo->pdr = NULL; 515 ainfo->pdr_end = NULL; 516 ainfo->sym = NULL; 517 ainfo->sym_end = NULL; 518 ainfo->opt = NULL; 519 ainfo->opt_end = NULL; 520 ainfo->aux = NULL; 521 ainfo->aux_end = NULL; 522 ainfo->ss = NULL; 523 ainfo->ss_end = NULL; 524 ainfo->ss_hash = NULL; 525 ainfo->ss_hash_end = NULL; 526 ainfo->fdr = NULL; 527 ainfo->fdr_end = NULL; 528 ainfo->rfd = NULL; 529 ainfo->rfd_end = NULL; 530 531 ainfo->largest_file_shuffle = 0; 532 533 if (! info->relocatable) 534 { 535 if (!bfd_hash_table_init (&ainfo->str_hash.table, string_hash_newfunc, 536 sizeof (struct string_hash_entry))) 537 return NULL; 538 539 /* The first entry in the string table is the empty string. */ 540 output_debug->symbolic_header.issMax = 1; 541 } 542 543 ainfo->memory = objalloc_create (); 544 if (ainfo->memory == NULL) 545 { 546 bfd_set_error (bfd_error_no_memory); 547 return NULL; 548 } 549 550 return (PTR) ainfo; 551 } 552 553 /* Free the accumulated debugging information. */ 554 555 void 556 bfd_ecoff_debug_free (handle, output_bfd, output_debug, output_swap, info) 557 PTR handle; 558 bfd *output_bfd ATTRIBUTE_UNUSED; 559 struct ecoff_debug_info *output_debug ATTRIBUTE_UNUSED; 560 const struct ecoff_debug_swap *output_swap ATTRIBUTE_UNUSED; 561 struct bfd_link_info *info; 562 { 563 struct accumulate *ainfo = (struct accumulate *) handle; 564 565 bfd_hash_table_free (&ainfo->fdr_hash.table); 566 567 if (! info->relocatable) 568 bfd_hash_table_free (&ainfo->str_hash.table); 569 570 objalloc_free (ainfo->memory); 571 572 free (ainfo); 573 } 574 575 /* Accumulate the debugging information from INPUT_BFD into 576 OUTPUT_BFD. The INPUT_DEBUG argument points to some ECOFF 577 debugging information which we want to link into the information 578 pointed to by the OUTPUT_DEBUG argument. OUTPUT_SWAP and 579 INPUT_SWAP point to the swapping information needed. INFO is the 580 linker information structure. HANDLE is returned by 581 bfd_ecoff_debug_init. */ 582 583 bfd_boolean 584 bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap, 585 input_bfd, input_debug, input_swap, 586 info) 587 PTR handle; 588 bfd *output_bfd; 589 struct ecoff_debug_info *output_debug; 590 const struct ecoff_debug_swap *output_swap; 591 bfd *input_bfd; 592 struct ecoff_debug_info *input_debug; 593 const struct ecoff_debug_swap *input_swap; 594 struct bfd_link_info *info; 595 { 596 struct accumulate *ainfo = (struct accumulate *) handle; 597 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) 598 = input_swap->swap_sym_in; 599 void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *)) 600 = input_swap->swap_rfd_in; 601 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR)) 602 = output_swap->swap_sym_out; 603 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR)) 604 = output_swap->swap_fdr_out; 605 void (* const swap_rfd_out) PARAMS ((bfd *, const RFDT *, PTR)) 606 = output_swap->swap_rfd_out; 607 bfd_size_type external_pdr_size = output_swap->external_pdr_size; 608 bfd_size_type external_sym_size = output_swap->external_sym_size; 609 bfd_size_type external_opt_size = output_swap->external_opt_size; 610 bfd_size_type external_fdr_size = output_swap->external_fdr_size; 611 bfd_size_type external_rfd_size = output_swap->external_rfd_size; 612 HDRR * const output_symhdr = &output_debug->symbolic_header; 613 HDRR * const input_symhdr = &input_debug->symbolic_header; 614 bfd_vma section_adjust[scMax]; 615 asection *sec; 616 bfd_byte *fdr_start; 617 bfd_byte *fdr_ptr; 618 bfd_byte *fdr_end; 619 bfd_size_type fdr_add; 620 unsigned int copied; 621 RFDT i; 622 unsigned long sz; 623 bfd_byte *rfd_out; 624 bfd_byte *rfd_in; 625 bfd_byte *rfd_end; 626 long newrfdbase = 0; 627 long oldrfdbase = 0; 628 bfd_byte *fdr_out; 629 bfd_size_type amt; 630 631 /* Use section_adjust to hold the value to add to a symbol in a 632 particular section. */ 633 memset ((PTR) section_adjust, 0, sizeof section_adjust); 634 635 #define SET(name, indx) \ 636 sec = bfd_get_section_by_name (input_bfd, name); \ 637 if (sec != NULL) \ 638 section_adjust[indx] = (sec->output_section->vma \ 639 + sec->output_offset \ 640 - sec->vma); 641 642 SET (".text", scText); 643 SET (".data", scData); 644 SET (".bss", scBss); 645 SET (".sdata", scSData); 646 SET (".sbss", scSBss); 647 /* scRdata section may be either .rdata or .rodata. */ 648 SET (".rdata", scRData); 649 SET (".rodata", scRData); 650 SET (".init", scInit); 651 SET (".fini", scFini); 652 SET (".rconst", scRConst); 653 654 #undef SET 655 656 /* Find all the debugging information based on the FDR's. We need 657 to handle them whether they are swapped or not. */ 658 if (input_debug->fdr != (FDR *) NULL) 659 { 660 fdr_start = (bfd_byte *) input_debug->fdr; 661 fdr_add = sizeof (FDR); 662 } 663 else 664 { 665 fdr_start = (bfd_byte *) input_debug->external_fdr; 666 fdr_add = input_swap->external_fdr_size; 667 } 668 fdr_end = fdr_start + input_symhdr->ifdMax * fdr_add; 669 670 amt = input_symhdr->ifdMax; 671 amt *= sizeof (RFDT); 672 input_debug->ifdmap = (RFDT *) bfd_alloc (input_bfd, amt); 673 674 sz = (input_symhdr->crfd + input_symhdr->ifdMax) * external_rfd_size; 675 rfd_out = (bfd_byte *) objalloc_alloc (ainfo->memory, sz); 676 if (!input_debug->ifdmap || !rfd_out) 677 { 678 bfd_set_error (bfd_error_no_memory); 679 return FALSE; 680 } 681 if (!add_memory_shuffle (ainfo, &ainfo->rfd, &ainfo->rfd_end, rfd_out, sz)) 682 return FALSE; 683 684 copied = 0; 685 686 /* Look through the FDR's to see which ones we are going to include 687 in the final output. We do not want duplicate FDR information 688 for header files, because ECOFF debugging is often very large. 689 When we find an FDR with no line information which can be merged, 690 we look it up in a hash table to ensure that we only include it 691 once. We keep a table mapping FDR numbers to the final number 692 they get with the BFD, so that we can refer to it when we write 693 out the external symbols. */ 694 for (fdr_ptr = fdr_start, i = 0; 695 fdr_ptr < fdr_end; 696 fdr_ptr += fdr_add, i++, rfd_out += external_rfd_size) 697 { 698 FDR fdr; 699 700 if (input_debug->fdr != (FDR *) NULL) 701 fdr = *(FDR *) fdr_ptr; 702 else 703 (*input_swap->swap_fdr_in) (input_bfd, (PTR) fdr_ptr, &fdr); 704 705 /* See if this FDR can be merged with an existing one. */ 706 if (fdr.cbLine == 0 && fdr.rss != -1 && fdr.fMerge) 707 { 708 const char *name; 709 char *lookup; 710 struct string_hash_entry *fh; 711 712 /* We look up a string formed from the file name and the 713 number of symbols and aux entries. Sometimes an include 714 file will conditionally define a typedef or something 715 based on the order of include files. Using the number of 716 symbols and aux entries as a hash reduces the chance that 717 we will merge symbol information that should not be 718 merged. */ 719 name = input_debug->ss + fdr.issBase + fdr.rss; 720 721 lookup = (char *) bfd_malloc ((bfd_size_type) strlen (name) + 20); 722 if (lookup == NULL) 723 return FALSE; 724 sprintf (lookup, "%s %lx %lx", name, (unsigned long) fdr.csym, 725 (unsigned long) fdr.caux); 726 727 fh = string_hash_lookup (&ainfo->fdr_hash, lookup, TRUE, TRUE); 728 free (lookup); 729 if (fh == (struct string_hash_entry *) NULL) 730 return FALSE; 731 732 if (fh->val != -1) 733 { 734 input_debug->ifdmap[i] = fh->val; 735 (*swap_rfd_out) (output_bfd, input_debug->ifdmap + i, 736 (PTR) rfd_out); 737 738 /* Don't copy this FDR. */ 739 continue; 740 } 741 742 fh->val = output_symhdr->ifdMax + copied; 743 } 744 745 input_debug->ifdmap[i] = output_symhdr->ifdMax + copied; 746 (*swap_rfd_out) (output_bfd, input_debug->ifdmap + i, (PTR) rfd_out); 747 ++copied; 748 } 749 750 newrfdbase = output_symhdr->crfd; 751 output_symhdr->crfd += input_symhdr->ifdMax; 752 753 /* Copy over any existing RFD's. RFD's are only created by the 754 linker, so this will only happen for input files which are the 755 result of a partial link. */ 756 rfd_in = (bfd_byte *) input_debug->external_rfd; 757 rfd_end = rfd_in + input_symhdr->crfd * input_swap->external_rfd_size; 758 for (; 759 rfd_in < rfd_end; 760 rfd_in += input_swap->external_rfd_size) 761 { 762 RFDT rfd; 763 764 (*swap_rfd_in) (input_bfd, (PTR) rfd_in, &rfd); 765 BFD_ASSERT (rfd >= 0 && rfd < input_symhdr->ifdMax); 766 rfd = input_debug->ifdmap[rfd]; 767 (*swap_rfd_out) (output_bfd, &rfd, (PTR) rfd_out); 768 rfd_out += external_rfd_size; 769 } 770 771 oldrfdbase = output_symhdr->crfd; 772 output_symhdr->crfd += input_symhdr->crfd; 773 774 /* Look through the FDR's and copy over all associated debugging 775 information. */ 776 sz = copied * external_fdr_size; 777 fdr_out = (bfd_byte *) objalloc_alloc (ainfo->memory, sz); 778 if (!fdr_out) 779 { 780 bfd_set_error (bfd_error_no_memory); 781 return FALSE; 782 } 783 if (!add_memory_shuffle (ainfo, &ainfo->fdr, &ainfo->fdr_end, fdr_out, sz)) 784 return FALSE; 785 for (fdr_ptr = fdr_start, i = 0; 786 fdr_ptr < fdr_end; 787 fdr_ptr += fdr_add, i++) 788 { 789 FDR fdr; 790 bfd_byte *sym_out; 791 bfd_byte *lraw_src; 792 bfd_byte *lraw_end; 793 bfd_boolean fgotfilename; 794 795 if (input_debug->ifdmap[i] < output_symhdr->ifdMax) 796 { 797 /* We are not copying this FDR. */ 798 continue; 799 } 800 801 if (input_debug->fdr != (FDR *) NULL) 802 fdr = *(FDR *) fdr_ptr; 803 else 804 (*input_swap->swap_fdr_in) (input_bfd, (PTR) fdr_ptr, &fdr); 805 806 /* FIXME: It is conceivable that this FDR points to the .init or 807 .fini section, in which case this will not do the right 808 thing. */ 809 fdr.adr += section_adjust[scText]; 810 811 /* Swap in the local symbols, adjust their values, and swap them 812 out again. */ 813 fgotfilename = FALSE; 814 sz = fdr.csym * external_sym_size; 815 sym_out = (bfd_byte *) objalloc_alloc (ainfo->memory, sz); 816 if (!sym_out) 817 { 818 bfd_set_error (bfd_error_no_memory); 819 return FALSE; 820 } 821 if (!add_memory_shuffle (ainfo, &ainfo->sym, &ainfo->sym_end, sym_out, 822 sz)) 823 return FALSE; 824 lraw_src = ((bfd_byte *) input_debug->external_sym 825 + fdr.isymBase * input_swap->external_sym_size); 826 lraw_end = lraw_src + fdr.csym * input_swap->external_sym_size; 827 for (; lraw_src < lraw_end; lraw_src += input_swap->external_sym_size) 828 { 829 SYMR internal_sym; 830 831 (*swap_sym_in) (input_bfd, (PTR) lraw_src, &internal_sym); 832 833 BFD_ASSERT (internal_sym.sc != scCommon 834 && internal_sym.sc != scSCommon); 835 836 /* Adjust the symbol value if appropriate. */ 837 switch (internal_sym.st) 838 { 839 case stNil: 840 if (ECOFF_IS_STAB (&internal_sym)) 841 break; 842 /* Fall through. */ 843 case stGlobal: 844 case stStatic: 845 case stLabel: 846 case stProc: 847 case stStaticProc: 848 internal_sym.value += section_adjust[internal_sym.sc]; 849 break; 850 851 default: 852 break; 853 } 854 855 /* If we are doing a final link, we hash all the strings in 856 the local symbol table together. This reduces the amount 857 of space required by debugging information. We don't do 858 this when performing a relocatable link because it would 859 prevent us from easily merging different FDR's. */ 860 if (! info->relocatable) 861 { 862 bfd_boolean ffilename; 863 const char *name; 864 865 if (! fgotfilename && internal_sym.iss == fdr.rss) 866 ffilename = TRUE; 867 else 868 ffilename = FALSE; 869 870 /* Hash the name into the string table. */ 871 name = input_debug->ss + fdr.issBase + internal_sym.iss; 872 if (*name == '\0') 873 internal_sym.iss = 0; 874 else 875 { 876 struct string_hash_entry *sh; 877 878 sh = string_hash_lookup (&ainfo->str_hash, name, TRUE, TRUE); 879 if (sh == (struct string_hash_entry *) NULL) 880 return FALSE; 881 if (sh->val == -1) 882 { 883 sh->val = output_symhdr->issMax; 884 output_symhdr->issMax += strlen (name) + 1; 885 if (ainfo->ss_hash == (struct string_hash_entry *) NULL) 886 ainfo->ss_hash = sh; 887 if (ainfo->ss_hash_end 888 != (struct string_hash_entry *) NULL) 889 ainfo->ss_hash_end->next = sh; 890 ainfo->ss_hash_end = sh; 891 } 892 internal_sym.iss = sh->val; 893 } 894 895 if (ffilename) 896 { 897 fdr.rss = internal_sym.iss; 898 fgotfilename = TRUE; 899 } 900 } 901 902 (*swap_sym_out) (output_bfd, &internal_sym, sym_out); 903 sym_out += external_sym_size; 904 } 905 906 fdr.isymBase = output_symhdr->isymMax; 907 output_symhdr->isymMax += fdr.csym; 908 909 /* Copy the information that does not need swapping. */ 910 911 /* FIXME: If we are relaxing, we need to adjust the line 912 numbers. Frankly, forget it. Anybody using stabs debugging 913 information will not use this line number information, and 914 stabs are adjusted correctly. */ 915 if (fdr.cbLine > 0) 916 { 917 file_ptr pos = input_symhdr->cbLineOffset + fdr.cbLineOffset; 918 if (!add_file_shuffle (ainfo, &ainfo->line, &ainfo->line_end, 919 input_bfd, pos, (unsigned long) fdr.cbLine)) 920 return FALSE; 921 fdr.ilineBase = output_symhdr->ilineMax; 922 fdr.cbLineOffset = output_symhdr->cbLine; 923 output_symhdr->ilineMax += fdr.cline; 924 output_symhdr->cbLine += fdr.cbLine; 925 } 926 if (fdr.caux > 0) 927 { 928 file_ptr pos = (input_symhdr->cbAuxOffset 929 + fdr.iauxBase * sizeof (union aux_ext)); 930 if (!add_file_shuffle (ainfo, &ainfo->aux, &ainfo->aux_end, 931 input_bfd, pos, 932 fdr.caux * sizeof (union aux_ext))) 933 return FALSE; 934 fdr.iauxBase = output_symhdr->iauxMax; 935 output_symhdr->iauxMax += fdr.caux; 936 } 937 if (! info->relocatable) 938 { 939 940 /* When are are hashing strings, we lie about the number of 941 strings attached to each FDR. We need to set cbSs 942 because some versions of dbx apparently use it to decide 943 how much of the string table to read in. */ 944 fdr.issBase = 0; 945 fdr.cbSs = output_symhdr->issMax; 946 } 947 else if (fdr.cbSs > 0) 948 { 949 file_ptr pos = input_symhdr->cbSsOffset + fdr.issBase; 950 if (!add_file_shuffle (ainfo, &ainfo->ss, &ainfo->ss_end, 951 input_bfd, pos, (unsigned long) fdr.cbSs)) 952 return FALSE; 953 fdr.issBase = output_symhdr->issMax; 954 output_symhdr->issMax += fdr.cbSs; 955 } 956 957 if (output_bfd->xvec->header_byteorder 958 == input_bfd->xvec->header_byteorder) 959 { 960 /* The two BFD's have the same endianness, and we don't have 961 to adjust the PDR addresses, so simply copying the 962 information will suffice. */ 963 BFD_ASSERT (external_pdr_size == input_swap->external_pdr_size); 964 if (fdr.cpd > 0) 965 { 966 file_ptr pos = (input_symhdr->cbPdOffset 967 + fdr.ipdFirst * external_pdr_size); 968 unsigned long size = fdr.cpd * external_pdr_size; 969 if (!add_file_shuffle (ainfo, &ainfo->pdr, &ainfo->pdr_end, 970 input_bfd, pos, size)) 971 return FALSE; 972 } 973 BFD_ASSERT (external_opt_size == input_swap->external_opt_size); 974 if (fdr.copt > 0) 975 { 976 file_ptr pos = (input_symhdr->cbOptOffset 977 + fdr.ioptBase * external_opt_size); 978 unsigned long size = fdr.copt * external_opt_size; 979 if (!add_file_shuffle (ainfo, &ainfo->opt, &ainfo->opt_end, 980 input_bfd, pos, size)) 981 return FALSE; 982 } 983 } 984 else 985 { 986 bfd_size_type outsz, insz; 987 bfd_byte *in; 988 bfd_byte *end; 989 bfd_byte *out; 990 991 /* The two BFD's have different endianness, so we must swap 992 everything in and out. This code would always work, but 993 it would be unnecessarily slow in the normal case. */ 994 outsz = external_pdr_size; 995 insz = input_swap->external_pdr_size; 996 in = ((bfd_byte *) input_debug->external_pdr 997 + fdr.ipdFirst * insz); 998 end = in + fdr.cpd * insz; 999 sz = fdr.cpd * outsz; 1000 out = (bfd_byte *) objalloc_alloc (ainfo->memory, sz); 1001 if (!out) 1002 { 1003 bfd_set_error (bfd_error_no_memory); 1004 return FALSE; 1005 } 1006 if (!add_memory_shuffle (ainfo, &ainfo->pdr, &ainfo->pdr_end, out, 1007 sz)) 1008 return FALSE; 1009 for (; in < end; in += insz, out += outsz) 1010 { 1011 PDR pdr; 1012 1013 (*input_swap->swap_pdr_in) (input_bfd, (PTR) in, &pdr); 1014 (*output_swap->swap_pdr_out) (output_bfd, &pdr, (PTR) out); 1015 } 1016 1017 /* Swap over the optimization information. */ 1018 outsz = external_opt_size; 1019 insz = input_swap->external_opt_size; 1020 in = ((bfd_byte *) input_debug->external_opt 1021 + fdr.ioptBase * insz); 1022 end = in + fdr.copt * insz; 1023 sz = fdr.copt * outsz; 1024 out = (bfd_byte *) objalloc_alloc (ainfo->memory, sz); 1025 if (!out) 1026 { 1027 bfd_set_error (bfd_error_no_memory); 1028 return FALSE; 1029 } 1030 if (!add_memory_shuffle (ainfo, &ainfo->opt, &ainfo->opt_end, out, 1031 sz)) 1032 return FALSE; 1033 for (; in < end; in += insz, out += outsz) 1034 { 1035 OPTR opt; 1036 1037 (*input_swap->swap_opt_in) (input_bfd, (PTR) in, &opt); 1038 (*output_swap->swap_opt_out) (output_bfd, &opt, (PTR) out); 1039 } 1040 } 1041 1042 fdr.ipdFirst = output_symhdr->ipdMax; 1043 output_symhdr->ipdMax += fdr.cpd; 1044 fdr.ioptBase = output_symhdr->ioptMax; 1045 output_symhdr->ioptMax += fdr.copt; 1046 1047 if (fdr.crfd <= 0) 1048 { 1049 /* Point this FDR at the table of RFD's we created. */ 1050 fdr.rfdBase = newrfdbase; 1051 fdr.crfd = input_symhdr->ifdMax; 1052 } 1053 else 1054 { 1055 /* Point this FDR at the remapped RFD's. */ 1056 fdr.rfdBase += oldrfdbase; 1057 } 1058 1059 (*swap_fdr_out) (output_bfd, &fdr, fdr_out); 1060 fdr_out += external_fdr_size; 1061 ++output_symhdr->ifdMax; 1062 } 1063 1064 return TRUE; 1065 } 1066 1067 /* Add a string to the debugging information we are accumulating. 1068 Return the offset from the fdr string base. */ 1069 1070 static long ecoff_add_string 1071 PARAMS ((struct accumulate *, struct bfd_link_info *, 1072 struct ecoff_debug_info *, FDR *fdr, const char *string)); 1073 1074 static long 1075 ecoff_add_string (ainfo, info, debug, fdr, string) 1076 struct accumulate *ainfo; 1077 struct bfd_link_info *info; 1078 struct ecoff_debug_info *debug; 1079 FDR *fdr; 1080 const char *string; 1081 { 1082 HDRR *symhdr; 1083 size_t len; 1084 bfd_size_type ret; 1085 1086 symhdr = &debug->symbolic_header; 1087 len = strlen (string); 1088 if (info->relocatable) 1089 { 1090 if (!add_memory_shuffle (ainfo, &ainfo->ss, &ainfo->ss_end, 1091 (bfd_byte *) string, len + 1)) 1092 return -1; 1093 ret = symhdr->issMax; 1094 symhdr->issMax += len + 1; 1095 fdr->cbSs += len + 1; 1096 } 1097 else 1098 { 1099 struct string_hash_entry *sh; 1100 1101 sh = string_hash_lookup (&ainfo->str_hash, string, TRUE, TRUE); 1102 if (sh == (struct string_hash_entry *) NULL) 1103 return -1; 1104 if (sh->val == -1) 1105 { 1106 sh->val = symhdr->issMax; 1107 symhdr->issMax += len + 1; 1108 if (ainfo->ss_hash == (struct string_hash_entry *) NULL) 1109 ainfo->ss_hash = sh; 1110 if (ainfo->ss_hash_end 1111 != (struct string_hash_entry *) NULL) 1112 ainfo->ss_hash_end->next = sh; 1113 ainfo->ss_hash_end = sh; 1114 } 1115 ret = sh->val; 1116 } 1117 1118 return ret; 1119 } 1120 1121 /* Add debugging information from a non-ECOFF file. */ 1122 1123 bfd_boolean 1124 bfd_ecoff_debug_accumulate_other (handle, output_bfd, output_debug, 1125 output_swap, input_bfd, info) 1126 PTR handle; 1127 bfd *output_bfd; 1128 struct ecoff_debug_info *output_debug; 1129 const struct ecoff_debug_swap *output_swap; 1130 bfd *input_bfd; 1131 struct bfd_link_info *info; 1132 { 1133 struct accumulate *ainfo = (struct accumulate *) handle; 1134 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR)) 1135 = output_swap->swap_sym_out; 1136 HDRR *output_symhdr = &output_debug->symbolic_header; 1137 FDR fdr; 1138 asection *sec; 1139 asymbol **symbols; 1140 asymbol **sym_ptr; 1141 asymbol **sym_end; 1142 long symsize; 1143 long symcount; 1144 PTR external_fdr; 1145 1146 memset ((PTR) &fdr, 0, sizeof fdr); 1147 1148 sec = bfd_get_section_by_name (input_bfd, ".text"); 1149 if (sec != NULL) 1150 fdr.adr = sec->output_section->vma + sec->output_offset; 1151 else 1152 { 1153 /* FIXME: What about .init or .fini? */ 1154 fdr.adr = 0; 1155 } 1156 1157 fdr.issBase = output_symhdr->issMax; 1158 fdr.cbSs = 0; 1159 fdr.rss = ecoff_add_string (ainfo, info, output_debug, &fdr, 1160 input_bfd->filename); 1161 if (fdr.rss == -1) 1162 return FALSE; 1163 fdr.isymBase = output_symhdr->isymMax; 1164 1165 /* Get the local symbols from the input BFD. */ 1166 symsize = bfd_get_symtab_upper_bound (input_bfd); 1167 if (symsize < 0) 1168 return FALSE; 1169 symbols = (asymbol **) bfd_alloc (output_bfd, (bfd_size_type) symsize); 1170 if (symbols == (asymbol **) NULL) 1171 return FALSE; 1172 symcount = bfd_canonicalize_symtab (input_bfd, symbols); 1173 if (symcount < 0) 1174 return FALSE; 1175 sym_end = symbols + symcount; 1176 1177 /* Handle the local symbols. Any external symbols are handled 1178 separately. */ 1179 fdr.csym = 0; 1180 for (sym_ptr = symbols; sym_ptr != sym_end; sym_ptr++) 1181 { 1182 SYMR internal_sym; 1183 PTR external_sym; 1184 1185 if (((*sym_ptr)->flags & BSF_EXPORT) != 0) 1186 continue; 1187 memset ((PTR) &internal_sym, 0, sizeof internal_sym); 1188 internal_sym.iss = ecoff_add_string (ainfo, info, output_debug, &fdr, 1189 (*sym_ptr)->name); 1190 1191 if (internal_sym.iss == -1) 1192 return FALSE; 1193 if (bfd_is_com_section ((*sym_ptr)->section) 1194 || bfd_is_und_section ((*sym_ptr)->section)) 1195 internal_sym.value = (*sym_ptr)->value; 1196 else 1197 internal_sym.value = ((*sym_ptr)->value 1198 + (*sym_ptr)->section->output_offset 1199 + (*sym_ptr)->section->output_section->vma); 1200 internal_sym.st = stNil; 1201 internal_sym.sc = scUndefined; 1202 internal_sym.index = indexNil; 1203 1204 external_sym = (PTR) objalloc_alloc (ainfo->memory, 1205 output_swap->external_sym_size); 1206 if (!external_sym) 1207 { 1208 bfd_set_error (bfd_error_no_memory); 1209 return FALSE; 1210 } 1211 (*swap_sym_out) (output_bfd, &internal_sym, external_sym); 1212 add_memory_shuffle (ainfo, &ainfo->sym, &ainfo->sym_end, 1213 (bfd_byte *) external_sym, 1214 (unsigned long) output_swap->external_sym_size); 1215 ++fdr.csym; 1216 ++output_symhdr->isymMax; 1217 } 1218 1219 bfd_release (output_bfd, (PTR) symbols); 1220 1221 /* Leave everything else in the FDR zeroed out. This will cause 1222 the lang field to be langC. The fBigendian field will 1223 indicate little endian format, but it doesn't matter because 1224 it only applies to aux fields and there are none. */ 1225 external_fdr = (PTR) objalloc_alloc (ainfo->memory, 1226 output_swap->external_fdr_size); 1227 if (!external_fdr) 1228 { 1229 bfd_set_error (bfd_error_no_memory); 1230 return FALSE; 1231 } 1232 (*output_swap->swap_fdr_out) (output_bfd, &fdr, external_fdr); 1233 add_memory_shuffle (ainfo, &ainfo->fdr, &ainfo->fdr_end, 1234 (bfd_byte *) external_fdr, 1235 (unsigned long) output_swap->external_fdr_size); 1236 1237 ++output_symhdr->ifdMax; 1238 1239 return TRUE; 1240 } 1241 1242 /* Set up ECOFF debugging information for the external symbols. 1243 FIXME: This is done using a memory buffer, but it should be 1244 probably be changed to use a shuffle structure. The assembler uses 1245 this interface, so that must be changed to do something else. */ 1246 1247 bfd_boolean 1248 bfd_ecoff_debug_externals (abfd, debug, swap, relocatable, get_extr, 1249 set_index) 1250 bfd *abfd; 1251 struct ecoff_debug_info *debug; 1252 const struct ecoff_debug_swap *swap; 1253 bfd_boolean relocatable; 1254 bfd_boolean (*get_extr) PARAMS ((asymbol *, EXTR *)); 1255 void (*set_index) PARAMS ((asymbol *, bfd_size_type)); 1256 { 1257 HDRR * const symhdr = &debug->symbolic_header; 1258 asymbol **sym_ptr_ptr; 1259 size_t c; 1260 1261 sym_ptr_ptr = bfd_get_outsymbols (abfd); 1262 if (sym_ptr_ptr == NULL) 1263 return TRUE; 1264 1265 for (c = bfd_get_symcount (abfd); c > 0; c--, sym_ptr_ptr++) 1266 { 1267 asymbol *sym_ptr; 1268 EXTR esym; 1269 1270 sym_ptr = *sym_ptr_ptr; 1271 1272 /* Get the external symbol information. */ 1273 if (! (*get_extr) (sym_ptr, &esym)) 1274 continue; 1275 1276 /* If we're producing an executable, move common symbols into 1277 bss. */ 1278 if (! relocatable) 1279 { 1280 if (esym.asym.sc == scCommon) 1281 esym.asym.sc = scBss; 1282 else if (esym.asym.sc == scSCommon) 1283 esym.asym.sc = scSBss; 1284 } 1285 1286 if (bfd_is_com_section (sym_ptr->section) 1287 || bfd_is_und_section (sym_ptr->section) 1288 || sym_ptr->section->output_section == (asection *) NULL) 1289 { 1290 /* FIXME: gas does not keep the value of a small undefined 1291 symbol in the symbol itself, because of relocation 1292 problems. */ 1293 if (esym.asym.sc != scSUndefined 1294 || esym.asym.value == 0 1295 || sym_ptr->value != 0) 1296 esym.asym.value = sym_ptr->value; 1297 } 1298 else 1299 esym.asym.value = (sym_ptr->value 1300 + sym_ptr->section->output_offset 1301 + sym_ptr->section->output_section->vma); 1302 1303 if (set_index) 1304 (*set_index) (sym_ptr, (bfd_size_type) symhdr->iextMax); 1305 1306 if (! bfd_ecoff_debug_one_external (abfd, debug, swap, 1307 sym_ptr->name, &esym)) 1308 return FALSE; 1309 } 1310 1311 return TRUE; 1312 } 1313 1314 /* Add a single external symbol to the debugging information. */ 1315 1316 bfd_boolean 1317 bfd_ecoff_debug_one_external (abfd, debug, swap, name, esym) 1318 bfd *abfd; 1319 struct ecoff_debug_info *debug; 1320 const struct ecoff_debug_swap *swap; 1321 const char *name; 1322 EXTR *esym; 1323 { 1324 const bfd_size_type external_ext_size = swap->external_ext_size; 1325 void (* const swap_ext_out) PARAMS ((bfd *, const EXTR *, PTR)) 1326 = swap->swap_ext_out; 1327 HDRR * const symhdr = &debug->symbolic_header; 1328 size_t namelen; 1329 1330 namelen = strlen (name); 1331 1332 if ((size_t) (debug->ssext_end - debug->ssext) 1333 < symhdr->issExtMax + namelen + 1) 1334 { 1335 if (! ecoff_add_bytes ((char **) &debug->ssext, 1336 (char **) &debug->ssext_end, 1337 symhdr->issExtMax + namelen + 1)) 1338 return FALSE; 1339 } 1340 if ((size_t) ((char *) debug->external_ext_end 1341 - (char *) debug->external_ext) 1342 < (symhdr->iextMax + 1) * external_ext_size) 1343 { 1344 char *external_ext = (char *) debug->external_ext; 1345 char *external_ext_end = (char *) debug->external_ext_end; 1346 if (! ecoff_add_bytes ((char **) &external_ext, 1347 (char **) &external_ext_end, 1348 (symhdr->iextMax + 1) * (size_t) external_ext_size)) 1349 return FALSE; 1350 debug->external_ext = external_ext; 1351 debug->external_ext_end = external_ext_end; 1352 } 1353 1354 esym->asym.iss = symhdr->issExtMax; 1355 1356 (*swap_ext_out) (abfd, esym, 1357 ((char *) debug->external_ext 1358 + symhdr->iextMax * swap->external_ext_size)); 1359 1360 ++symhdr->iextMax; 1361 1362 strcpy (debug->ssext + symhdr->issExtMax, name); 1363 symhdr->issExtMax += namelen + 1; 1364 1365 return TRUE; 1366 } 1367 1368 /* Align the ECOFF debugging information. */ 1369 1370 static void 1371 ecoff_align_debug (abfd, debug, swap) 1372 bfd *abfd ATTRIBUTE_UNUSED; 1373 struct ecoff_debug_info *debug; 1374 const struct ecoff_debug_swap *swap; 1375 { 1376 HDRR * const symhdr = &debug->symbolic_header; 1377 bfd_size_type debug_align, aux_align, rfd_align; 1378 size_t add; 1379 1380 /* Adjust the counts so that structures are aligned. */ 1381 debug_align = swap->debug_align; 1382 aux_align = debug_align / sizeof (union aux_ext); 1383 rfd_align = debug_align / swap->external_rfd_size; 1384 1385 add = debug_align - (symhdr->cbLine & (debug_align - 1)); 1386 if (add != debug_align) 1387 { 1388 if (debug->line != (unsigned char *) NULL) 1389 memset ((PTR) (debug->line + symhdr->cbLine), 0, add); 1390 symhdr->cbLine += add; 1391 } 1392 1393 add = debug_align - (symhdr->issMax & (debug_align - 1)); 1394 if (add != debug_align) 1395 { 1396 if (debug->ss != (char *) NULL) 1397 memset ((PTR) (debug->ss + symhdr->issMax), 0, add); 1398 symhdr->issMax += add; 1399 } 1400 1401 add = debug_align - (symhdr->issExtMax & (debug_align - 1)); 1402 if (add != debug_align) 1403 { 1404 if (debug->ssext != (char *) NULL) 1405 memset ((PTR) (debug->ssext + symhdr->issExtMax), 0, add); 1406 symhdr->issExtMax += add; 1407 } 1408 1409 add = aux_align - (symhdr->iauxMax & (aux_align - 1)); 1410 if (add != aux_align) 1411 { 1412 if (debug->external_aux != (union aux_ext *) NULL) 1413 memset ((PTR) (debug->external_aux + symhdr->iauxMax), 0, 1414 add * sizeof (union aux_ext)); 1415 symhdr->iauxMax += add; 1416 } 1417 1418 add = rfd_align - (symhdr->crfd & (rfd_align - 1)); 1419 if (add != rfd_align) 1420 { 1421 if (debug->external_rfd != (PTR) NULL) 1422 memset ((PTR) ((char *) debug->external_rfd 1423 + symhdr->crfd * swap->external_rfd_size), 1424 0, (size_t) (add * swap->external_rfd_size)); 1425 symhdr->crfd += add; 1426 } 1427 } 1428 1429 /* Return the size required by the ECOFF debugging information. */ 1430 1431 bfd_size_type 1432 bfd_ecoff_debug_size (abfd, debug, swap) 1433 bfd *abfd; 1434 struct ecoff_debug_info *debug; 1435 const struct ecoff_debug_swap *swap; 1436 { 1437 bfd_size_type tot; 1438 1439 ecoff_align_debug (abfd, debug, swap); 1440 tot = swap->external_hdr_size; 1441 1442 #define ADD(count, size) \ 1443 tot += debug->symbolic_header.count * size 1444 1445 ADD (cbLine, sizeof (unsigned char)); 1446 ADD (idnMax, swap->external_dnr_size); 1447 ADD (ipdMax, swap->external_pdr_size); 1448 ADD (isymMax, swap->external_sym_size); 1449 ADD (ioptMax, swap->external_opt_size); 1450 ADD (iauxMax, sizeof (union aux_ext)); 1451 ADD (issMax, sizeof (char)); 1452 ADD (issExtMax, sizeof (char)); 1453 ADD (ifdMax, swap->external_fdr_size); 1454 ADD (crfd, swap->external_rfd_size); 1455 ADD (iextMax, swap->external_ext_size); 1456 1457 #undef ADD 1458 1459 return tot; 1460 } 1461 1462 /* Write out the ECOFF symbolic header, given the file position it is 1463 going to be placed at. This assumes that the counts are set 1464 correctly. */ 1465 1466 static bfd_boolean 1467 ecoff_write_symhdr (abfd, debug, swap, where) 1468 bfd *abfd; 1469 struct ecoff_debug_info *debug; 1470 const struct ecoff_debug_swap *swap; 1471 file_ptr where; 1472 { 1473 HDRR * const symhdr = &debug->symbolic_header; 1474 char *buff = NULL; 1475 1476 ecoff_align_debug (abfd, debug, swap); 1477 1478 /* Go to the right location in the file. */ 1479 if (bfd_seek (abfd, where, SEEK_SET) != 0) 1480 return FALSE; 1481 1482 where += swap->external_hdr_size; 1483 1484 symhdr->magic = swap->sym_magic; 1485 1486 /* Fill in the file offsets. */ 1487 #define SET(offset, count, size) \ 1488 if (symhdr->count == 0) \ 1489 symhdr->offset = 0; \ 1490 else \ 1491 { \ 1492 symhdr->offset = where; \ 1493 where += symhdr->count * size; \ 1494 } 1495 1496 SET (cbLineOffset, cbLine, sizeof (unsigned char)); 1497 SET (cbDnOffset, idnMax, swap->external_dnr_size); 1498 SET (cbPdOffset, ipdMax, swap->external_pdr_size); 1499 SET (cbSymOffset, isymMax, swap->external_sym_size); 1500 SET (cbOptOffset, ioptMax, swap->external_opt_size); 1501 SET (cbAuxOffset, iauxMax, sizeof (union aux_ext)); 1502 SET (cbSsOffset, issMax, sizeof (char)); 1503 SET (cbSsExtOffset, issExtMax, sizeof (char)); 1504 SET (cbFdOffset, ifdMax, swap->external_fdr_size); 1505 SET (cbRfdOffset, crfd, swap->external_rfd_size); 1506 SET (cbExtOffset, iextMax, swap->external_ext_size); 1507 #undef SET 1508 1509 buff = (char *) bfd_malloc (swap->external_hdr_size); 1510 if (buff == NULL && swap->external_hdr_size != 0) 1511 goto error_return; 1512 1513 (*swap->swap_hdr_out) (abfd, symhdr, buff); 1514 if (bfd_bwrite (buff, swap->external_hdr_size, abfd) 1515 != swap->external_hdr_size) 1516 goto error_return; 1517 1518 if (buff != NULL) 1519 free (buff); 1520 return TRUE; 1521 error_return: 1522 if (buff != NULL) 1523 free (buff); 1524 return FALSE; 1525 } 1526 1527 /* Write out the ECOFF debugging information. This function assumes 1528 that the information (the pointers and counts) in *DEBUG have been 1529 set correctly. WHERE is the position in the file to write the 1530 information to. This function fills in the file offsets in the 1531 symbolic header. */ 1532 1533 bfd_boolean 1534 bfd_ecoff_write_debug (abfd, debug, swap, where) 1535 bfd *abfd; 1536 struct ecoff_debug_info *debug; 1537 const struct ecoff_debug_swap *swap; 1538 file_ptr where; 1539 { 1540 HDRR * const symhdr = &debug->symbolic_header; 1541 1542 if (! ecoff_write_symhdr (abfd, debug, swap, where)) 1543 return FALSE; 1544 1545 #define WRITE(ptr, count, size, offset) \ 1546 BFD_ASSERT (symhdr->offset == 0 \ 1547 || (bfd_vma) bfd_tell (abfd) == symhdr->offset); \ 1548 if (bfd_bwrite ((PTR) debug->ptr, (bfd_size_type) size * symhdr->count, abfd)\ 1549 != size * symhdr->count) \ 1550 return FALSE; 1551 1552 WRITE (line, cbLine, sizeof (unsigned char), cbLineOffset); 1553 WRITE (external_dnr, idnMax, swap->external_dnr_size, cbDnOffset); 1554 WRITE (external_pdr, ipdMax, swap->external_pdr_size, cbPdOffset); 1555 WRITE (external_sym, isymMax, swap->external_sym_size, cbSymOffset); 1556 WRITE (external_opt, ioptMax, swap->external_opt_size, cbOptOffset); 1557 WRITE (external_aux, iauxMax, (bfd_size_type) sizeof (union aux_ext), 1558 cbAuxOffset); 1559 WRITE (ss, issMax, sizeof (char), cbSsOffset); 1560 WRITE (ssext, issExtMax, sizeof (char), cbSsExtOffset); 1561 WRITE (external_fdr, ifdMax, swap->external_fdr_size, cbFdOffset); 1562 WRITE (external_rfd, crfd, swap->external_rfd_size, cbRfdOffset); 1563 WRITE (external_ext, iextMax, swap->external_ext_size, cbExtOffset); 1564 #undef WRITE 1565 1566 return TRUE; 1567 } 1568 1569 /* Write out a shuffle list. */ 1570 1571 static bfd_boolean ecoff_write_shuffle 1572 PARAMS ((bfd *, const struct ecoff_debug_swap *, struct shuffle *, 1573 PTR space)); 1574 1575 static bfd_boolean 1576 ecoff_write_shuffle (abfd, swap, shuffle, space) 1577 bfd *abfd; 1578 const struct ecoff_debug_swap *swap; 1579 struct shuffle *shuffle; 1580 PTR space; 1581 { 1582 register struct shuffle *l; 1583 unsigned long total; 1584 1585 total = 0; 1586 for (l = shuffle; l != (struct shuffle *) NULL; l = l->next) 1587 { 1588 if (! l->filep) 1589 { 1590 if (bfd_bwrite (l->u.memory, (bfd_size_type) l->size, abfd) 1591 != l->size) 1592 return FALSE; 1593 } 1594 else 1595 { 1596 if (bfd_seek (l->u.file.input_bfd, l->u.file.offset, SEEK_SET) != 0 1597 || bfd_bread (space, (bfd_size_type) l->size, 1598 l->u.file.input_bfd) != l->size 1599 || bfd_bwrite (space, (bfd_size_type) l->size, abfd) != l->size) 1600 return FALSE; 1601 } 1602 total += l->size; 1603 } 1604 1605 if ((total & (swap->debug_align - 1)) != 0) 1606 { 1607 unsigned int i; 1608 bfd_byte *s; 1609 1610 i = swap->debug_align - (total & (swap->debug_align - 1)); 1611 s = (bfd_byte *) bfd_zmalloc ((bfd_size_type) i); 1612 if (s == NULL && i != 0) 1613 return FALSE; 1614 1615 if (bfd_bwrite ((PTR) s, (bfd_size_type) i, abfd) != i) 1616 { 1617 free (s); 1618 return FALSE; 1619 } 1620 free (s); 1621 } 1622 1623 return TRUE; 1624 } 1625 1626 /* Write out debugging information using accumulated linker 1627 information. */ 1628 1629 bfd_boolean 1630 bfd_ecoff_write_accumulated_debug (handle, abfd, debug, swap, info, where) 1631 PTR handle; 1632 bfd *abfd; 1633 struct ecoff_debug_info *debug; 1634 const struct ecoff_debug_swap *swap; 1635 struct bfd_link_info *info; 1636 file_ptr where; 1637 { 1638 struct accumulate *ainfo = (struct accumulate *) handle; 1639 PTR space = NULL; 1640 bfd_size_type amt; 1641 1642 if (! ecoff_write_symhdr (abfd, debug, swap, where)) 1643 goto error_return; 1644 1645 amt = ainfo->largest_file_shuffle; 1646 space = (PTR) bfd_malloc (amt); 1647 if (space == NULL && ainfo->largest_file_shuffle != 0) 1648 goto error_return; 1649 1650 if (! ecoff_write_shuffle (abfd, swap, ainfo->line, space) 1651 || ! ecoff_write_shuffle (abfd, swap, ainfo->pdr, space) 1652 || ! ecoff_write_shuffle (abfd, swap, ainfo->sym, space) 1653 || ! ecoff_write_shuffle (abfd, swap, ainfo->opt, space) 1654 || ! ecoff_write_shuffle (abfd, swap, ainfo->aux, space)) 1655 goto error_return; 1656 1657 /* The string table is written out from the hash table if this is a 1658 final link. */ 1659 if (info->relocatable) 1660 { 1661 BFD_ASSERT (ainfo->ss_hash == (struct string_hash_entry *) NULL); 1662 if (! ecoff_write_shuffle (abfd, swap, ainfo->ss, space)) 1663 goto error_return; 1664 } 1665 else 1666 { 1667 unsigned long total; 1668 bfd_byte null; 1669 struct string_hash_entry *sh; 1670 1671 BFD_ASSERT (ainfo->ss == (struct shuffle *) NULL); 1672 null = 0; 1673 if (bfd_bwrite ((PTR) &null, (bfd_size_type) 1, abfd) != 1) 1674 goto error_return; 1675 total = 1; 1676 BFD_ASSERT (ainfo->ss_hash == NULL || ainfo->ss_hash->val == 1); 1677 for (sh = ainfo->ss_hash; 1678 sh != (struct string_hash_entry *) NULL; 1679 sh = sh->next) 1680 { 1681 size_t len; 1682 1683 len = strlen (sh->root.string); 1684 amt = len + 1; 1685 if (bfd_bwrite ((PTR) sh->root.string, amt, abfd) != amt) 1686 goto error_return; 1687 total += len + 1; 1688 } 1689 1690 if ((total & (swap->debug_align - 1)) != 0) 1691 { 1692 unsigned int i; 1693 bfd_byte *s; 1694 1695 i = swap->debug_align - (total & (swap->debug_align - 1)); 1696 s = (bfd_byte *) bfd_zmalloc ((bfd_size_type) i); 1697 if (s == NULL && i != 0) 1698 goto error_return; 1699 1700 if (bfd_bwrite ((PTR) s, (bfd_size_type) i, abfd) != i) 1701 { 1702 free (s); 1703 goto error_return; 1704 } 1705 free (s); 1706 } 1707 } 1708 1709 /* The external strings and symbol are not converted over to using 1710 shuffles. FIXME: They probably should be. */ 1711 amt = debug->symbolic_header.issExtMax; 1712 if (bfd_bwrite (debug->ssext, amt, abfd) != amt) 1713 goto error_return; 1714 if ((debug->symbolic_header.issExtMax & (swap->debug_align - 1)) != 0) 1715 { 1716 unsigned int i; 1717 bfd_byte *s; 1718 1719 i = (swap->debug_align 1720 - (debug->symbolic_header.issExtMax & (swap->debug_align - 1))); 1721 s = (bfd_byte *) bfd_zmalloc ((bfd_size_type) i); 1722 if (s == NULL && i != 0) 1723 goto error_return; 1724 1725 if (bfd_bwrite ((PTR) s, (bfd_size_type) i, abfd) != i) 1726 { 1727 free (s); 1728 goto error_return; 1729 } 1730 free (s); 1731 } 1732 1733 if (! ecoff_write_shuffle (abfd, swap, ainfo->fdr, space) 1734 || ! ecoff_write_shuffle (abfd, swap, ainfo->rfd, space)) 1735 goto error_return; 1736 1737 BFD_ASSERT (debug->symbolic_header.cbExtOffset == 0 1738 || (debug->symbolic_header.cbExtOffset 1739 == (bfd_vma) bfd_tell (abfd))); 1740 1741 amt = debug->symbolic_header.iextMax * swap->external_ext_size; 1742 if (bfd_bwrite (debug->external_ext, amt, abfd) != amt) 1743 goto error_return; 1744 1745 if (space != NULL) 1746 free (space); 1747 return TRUE; 1748 1749 error_return: 1750 if (space != NULL) 1751 free (space); 1752 return FALSE; 1753 } 1754 1755 /* Handle the find_nearest_line function for both ECOFF and MIPS ELF 1757 files. */ 1758 1759 /* Compare FDR entries. This is called via qsort. */ 1760 1761 static int 1762 cmp_fdrtab_entry (leftp, rightp) 1763 const PTR leftp; 1764 const PTR rightp; 1765 { 1766 const struct ecoff_fdrtab_entry *lp = 1767 (const struct ecoff_fdrtab_entry *) leftp; 1768 const struct ecoff_fdrtab_entry *rp = 1769 (const struct ecoff_fdrtab_entry *) rightp; 1770 1771 if (lp->base_addr < rp->base_addr) 1772 return -1; 1773 if (lp->base_addr > rp->base_addr) 1774 return 1; 1775 return 0; 1776 } 1777 1778 /* Each file descriptor (FDR) has a memory address, to simplify 1779 looking up an FDR by address, we build a table covering all FDRs 1780 that have a least one procedure descriptor in them. The final 1781 table will be sorted by address so we can look it up via binary 1782 search. */ 1783 1784 static bfd_boolean 1785 mk_fdrtab (abfd, debug_info, debug_swap, line_info) 1786 bfd *abfd; 1787 struct ecoff_debug_info * const debug_info; 1788 const struct ecoff_debug_swap * const debug_swap; 1789 struct ecoff_find_line *line_info; 1790 { 1791 struct ecoff_fdrtab_entry *tab; 1792 FDR *fdr_ptr; 1793 FDR *fdr_start; 1794 FDR *fdr_end; 1795 bfd_boolean stabs; 1796 long len; 1797 bfd_size_type amt; 1798 1799 fdr_start = debug_info->fdr; 1800 fdr_end = fdr_start + debug_info->symbolic_header.ifdMax; 1801 1802 /* First, let's see how long the table needs to be. */ 1803 for (len = 0, fdr_ptr = fdr_start; fdr_ptr < fdr_end; fdr_ptr++) 1804 { 1805 if (fdr_ptr->cpd == 0) /* Skip FDRs that have no PDRs. */ 1806 continue; 1807 ++len; 1808 } 1809 1810 /* Now, create and fill in the table. */ 1811 amt = (bfd_size_type) len * sizeof (struct ecoff_fdrtab_entry); 1812 line_info->fdrtab = (struct ecoff_fdrtab_entry*) bfd_zalloc (abfd, amt); 1813 if (line_info->fdrtab == NULL) 1814 return FALSE; 1815 line_info->fdrtab_len = len; 1816 1817 tab = line_info->fdrtab; 1818 for (fdr_ptr = fdr_start; fdr_ptr < fdr_end; fdr_ptr++) 1819 { 1820 if (fdr_ptr->cpd == 0) 1821 continue; 1822 1823 /* Check whether this file has stabs debugging information. In 1824 a file with stabs debugging information, the second local 1825 symbol is named @stabs. */ 1826 stabs = FALSE; 1827 if (fdr_ptr->csym >= 2) 1828 { 1829 char *sym_ptr; 1830 SYMR sym; 1831 1832 sym_ptr = ((char *) debug_info->external_sym 1833 + (fdr_ptr->isymBase + 1) * debug_swap->external_sym_size); 1834 (*debug_swap->swap_sym_in) (abfd, sym_ptr, &sym); 1835 if (strcmp (debug_info->ss + fdr_ptr->issBase + sym.iss, 1836 STABS_SYMBOL) == 0) 1837 stabs = TRUE; 1838 } 1839 1840 if (!stabs) 1841 { 1842 /* eraxxon: There are at least two problems with this computation: 1843 1) PDRs do *not* contain offsets but full vma's; and typically the 1844 address of the first PDR is the address of the FDR, which will 1845 make (most) of the results of the original computation 0! 1846 2) Once in a wacky while, the Compaq compiler generated PDR 1847 addresses do not equal the FDR vma, but they (the PDR address) 1848 are still vma's and not offsets. Cf. comments in 1849 'lookup_line'. */ 1850 /* The address of the first PDR is the offset of that 1851 procedure relative to the beginning of file FDR. */ 1852 tab->base_addr = fdr_ptr->adr; 1853 } 1854 else 1855 { 1856 /* XXX I don't know about stabs, so this is a guess 1857 (davidm (at) cs.arizona.edu). */ 1858 tab->base_addr = fdr_ptr->adr; 1859 } 1860 tab->fdr = fdr_ptr; 1861 ++tab; 1862 } 1863 1864 /* Finally, the table is sorted in increasing memory-address order. 1865 The table is mostly sorted already, but there are cases (e.g., 1866 static functions in include files), where this does not hold. 1867 Use "odump -PFv" to verify... */ 1868 qsort ((PTR) line_info->fdrtab, (size_t) len, 1869 sizeof (struct ecoff_fdrtab_entry), cmp_fdrtab_entry); 1870 1871 return TRUE; 1872 } 1873 1874 /* Return index of first FDR that covers to OFFSET. */ 1875 1876 static long 1877 fdrtab_lookup (line_info, offset) 1878 struct ecoff_find_line *line_info; 1879 bfd_vma offset; 1880 { 1881 long low, high, len; 1882 long mid = -1; 1883 struct ecoff_fdrtab_entry *tab; 1884 1885 len = line_info->fdrtab_len; 1886 if (len == 0) 1887 return -1; 1888 1889 tab = line_info->fdrtab; 1890 for (low = 0, high = len - 1 ; low != high ;) 1891 { 1892 mid = (high + low) / 2; 1893 if (offset >= tab[mid].base_addr && offset < tab[mid + 1].base_addr) 1894 goto find_min; 1895 1896 if (tab[mid].base_addr > offset) 1897 high = mid; 1898 else 1899 low = mid + 1; 1900 } 1901 1902 /* eraxxon: at this point 'offset' is either lower than the lowest entry or 1903 higher than the highest entry. In the former case high = low = mid = 0; 1904 we want to return -1. In the latter case, low = high and mid = low - 1; 1905 we want to return the index of the highest entry. Only in former case 1906 will the following 'catch-all' test be true. */ 1907 ++mid; 1908 1909 /* Last entry is catch-all for all higher addresses. */ 1910 if (offset < tab[mid].base_addr) 1911 return -1; 1912 1913 find_min: 1914 1915 /* eraxxon: There may be multiple FDRs in the table with the 1916 same base_addr; make sure that we are at the first one. */ 1917 while (mid > 0 && tab[mid - 1].base_addr == tab[mid].base_addr) 1918 --mid; 1919 1920 return mid; 1921 } 1922 1923 /* Look up a line given an address, storing the information in 1924 LINE_INFO->cache. */ 1925 1926 static bfd_boolean 1927 lookup_line (abfd, debug_info, debug_swap, line_info) 1928 bfd *abfd; 1929 struct ecoff_debug_info * const debug_info; 1930 const struct ecoff_debug_swap * const debug_swap; 1931 struct ecoff_find_line *line_info; 1932 { 1933 struct ecoff_fdrtab_entry *tab; 1934 bfd_vma offset; 1935 bfd_boolean stabs; 1936 FDR *fdr_ptr; 1937 int i; 1938 1939 /* eraxxon: note that 'offset' is the full vma, not a section offset. */ 1940 offset = line_info->cache.start; 1941 1942 /* Build FDR table (sorted by object file's base-address) if we 1943 don't have it already. */ 1944 if (line_info->fdrtab == NULL 1945 && !mk_fdrtab (abfd, debug_info, debug_swap, line_info)) 1946 return FALSE; 1947 1948 tab = line_info->fdrtab; 1949 1950 /* Find first FDR for address OFFSET. */ 1951 i = fdrtab_lookup (line_info, offset); 1952 if (i < 0) 1953 return FALSE; /* no FDR, no fun... */ 1954 1955 /* eraxxon: 'fdrtab_lookup' doesn't give what we want, at least for Compaq's 1956 C++ compiler 6.2. Consider three FDRs with starting addresses of x, y, 1957 and z, respectively, such that x < y < z. Assume further that 1958 y < 'offset' < z. It is possible at times that the PDR for 'offset' is 1959 associated with FDR x and *not* with FDR y. Erg!! 1960 1961 From a binary dump of my C++ test case 'moo' using Compaq's coffobjanl 1962 (output format has been edited for our purposes): 1963 1964 FDR [2]: (main.C): First instruction: 0x12000207c <x> 1965 PDR [5] for File [2]: LoopTest__Xv <0x1200020a0> (a) 1966 PDR [7] for File [2]: foo__Xv <0x120002168> 1967 FDR [1]: (-1): First instruction: 0x1200020e8 <y> 1968 PDR [3] for File [1]: <0x120001ad0> (b) 1969 FDR [6]: (-1): First instruction: 0x1200026f0 <z> 1970 1971 (a) In the case of PDR5, the vma is such that the first few instructions 1972 of the procedure can be found. But since the size of this procedure is 1973 160b, the vma will soon cross into the 'address space' of FDR1 and no 1974 debugging info will be found. How repugnant! 1975 1976 (b) It is also possible for a PDR to have a *lower* vma than its associated 1977 FDR; see FDR1 and PDR3. Gross! 1978 1979 Since the FDRs that are causing so much havok (in this case) 1) do not 1980 describe actual files (fdr.rss == -1), and 2) contain only compiler 1981 generated routines, I thought a simple fix would be to exclude them from 1982 the FDR table in 'mk_fdrtab'. But, besides not knowing for certain 1983 whether this would be correct, it creates an additional problem. If we 1984 happen to ask for source file info on a compiler generated (procedure) 1985 symbol -- which is still in the symbol table -- the result can be 1986 information from a real procedure! This is because compiler generated 1987 procedures with vma's higher than the last FDR in the fdr table will be 1988 associated with a PDR from this FDR, specifically the PDR with the 1989 highest vma. This wasn't a problem before, because each procedure had a 1990 PDR. (Yes, this problem could be eliminated if we kept the size of the 1991 last PDR around, but things are already getting ugly). 1992 1993 Probably, a better solution would be to have a sorted PDR table. Each 1994 PDR would have a pointer to its FDR so file information could still be 1995 obtained. A FDR table could still be constructed if necessary -- since 1996 it only contains pointers, not much extra memory would be used -- but 1997 the PDR table would be searched to locate debugging info. 1998 1999 There is still at least one remaining issue. Sometimes a FDR can have a 2000 bogus name, but contain PDRs that should belong to another FDR with a 2001 real name. E.g: 2002 2003 FDR [3]: 0000000120001b50 (/home/.../Array.H~alt~deccxx_5E5A62AD) 2004 PDR [a] for File [3]: 0000000120001b50 2005 PDR [b] for File [3]: 0000000120001cf0 2006 PDR [c] for File [3]: 0000000120001dc8 2007 PDR [d] for File [3]: 0000000120001e40 2008 PDR [e] for File [3]: 0000000120001eb8 2009 PDR [f] for File [3]: 0000000120001f4c 2010 FDR [4]: 0000000120001b50 (/home/.../Array.H) 2011 2012 Here, FDR4 has the correct name, but should (seemingly) contain PDRa-f. 2013 The symbol table for PDR4 does contain symbols for PDRa-f, but so does 2014 the symbol table for FDR3. However the former is different; perhaps this 2015 can be detected easily. (I'm not sure at this point.) This problem only 2016 seems to be associated with files with templates. I am assuming the idea 2017 is that there is a 'fake' FDR (with PDRs) for each differently typed set 2018 of templates that must be generated. Currently, FDR4 is completely 2019 excluded from the FDR table in 'mk_fdrtab' because it contains no PDRs. 2020 2021 Since I don't have time to prepare a real fix for this right now, be 2022 prepared for 'A Horrible Hack' to force the inspection of all non-stabs 2023 FDRs. It's coming... */ 2024 fdr_ptr = tab[i].fdr; 2025 2026 /* Check whether this file has stabs debugging information. In a 2027 file with stabs debugging information, the second local symbol is 2028 named @stabs. */ 2029 stabs = FALSE; 2030 if (fdr_ptr->csym >= 2) 2031 { 2032 char *sym_ptr; 2033 SYMR sym; 2034 2035 sym_ptr = ((char *) debug_info->external_sym 2036 + (fdr_ptr->isymBase + 1) * debug_swap->external_sym_size); 2037 (*debug_swap->swap_sym_in) (abfd, sym_ptr, &sym); 2038 if (strcmp (debug_info->ss + fdr_ptr->issBase + sym.iss, 2039 STABS_SYMBOL) == 0) 2040 stabs = TRUE; 2041 } 2042 2043 if (!stabs) 2044 { 2045 bfd_size_type external_pdr_size; 2046 char *pdr_ptr; 2047 char *best_pdr = NULL; 2048 FDR *best_fdr; 2049 bfd_signed_vma best_dist = -1; 2050 PDR pdr; 2051 unsigned char *line_ptr; 2052 unsigned char *line_end; 2053 int lineno; 2054 /* This file uses ECOFF debugging information. Each FDR has a 2055 list of procedure descriptors (PDR). The address in the FDR 2056 is the absolute address of the first procedure. The address 2057 in the first PDR gives the offset of that procedure relative 2058 to the object file's base-address. The addresses in 2059 subsequent PDRs specify each procedure's address relative to 2060 the object file's base-address. To make things more juicy, 2061 whenever the PROF bit in the PDR is set, the real entry point 2062 of the procedure may be 16 bytes below what would normally be 2063 the procedure's entry point. Instead, DEC came up with a 2064 wicked scheme to create profiled libraries "on the fly": 2065 instead of shipping a regular and a profiled version of each 2066 library, they insert 16 bytes of unused space in front of 2067 each procedure and set the "prof" bit in the PDR to indicate 2068 that there is a gap there (this is done automagically by "as" 2069 when option "-pg" is specified). Thus, normally, you link 2070 against such a library and, except for lots of 16 byte gaps 2071 between functions, things will behave as usual. However, 2072 when invoking "ld" with option "-pg", it will fill those gaps 2073 with code that calls mcount(). It then moves the function's 2074 entry point down by 16 bytes, and out pops a binary that has 2075 all functions profiled. 2076 2077 NOTE: Neither FDRs nor PDRs are strictly sorted in memory 2078 order. For example, when including header-files that 2079 define functions, the FDRs follow behind the including 2080 file, even though their code may have been generated at 2081 a lower address. File coff-alpha.c from libbfd 2082 illustrates this (use "odump -PFv" to look at a file's 2083 FDR/PDR). Similarly, PDRs are sometimes out of order 2084 as well. An example of this is OSF/1 v3.0 libc's 2085 malloc.c. I'm not sure why this happens, but it could 2086 be due to optimizations that reorder a function's 2087 position within an object-file. 2088 2089 Strategy: 2090 2091 On the first call to this function, we build a table of FDRs 2092 that is sorted by the base-address of the object-file the FDR 2093 is referring to. Notice that each object-file may contain 2094 code from multiple source files (e.g., due to code defined in 2095 include files). Thus, for any given base-address, there may 2096 be multiple FDRs (but this case is, fortunately, uncommon). 2097 lookup(addr) guarantees to return the first FDR that applies 2098 to address ADDR. Thus, after invoking lookup(), we have a 2099 list of FDRs that may contain the PDR for ADDR. Next, we 2100 walk through the PDRs of these FDRs and locate the one that 2101 is closest to ADDR (i.e., for which the difference between 2102 ADDR and the PDR's entry point is positive and minimal). 2103 Once, the right FDR and PDR are located, we simply walk 2104 through the line-number table to lookup the line-number that 2105 best matches ADDR. Obviously, things could be sped up by 2106 keeping a sorted list of PDRs instead of a sorted list of 2107 FDRs. However, this would increase space requirements 2108 considerably, which is undesirable. */ 2109 external_pdr_size = debug_swap->external_pdr_size; 2110 2111 /* eraxxon: The Horrible Hack: Because of the problems above, set 'i' 2112 to 0 so we look through all FDRs. 2113 2114 Because FDR's without any symbols are assumed to be non-stabs, 2115 searching through all FDRs may cause the following code to try to 2116 read stabs FDRs as ECOFF ones. However, I don't think this will 2117 harm anything. */ 2118 i = 0; 2119 2120 /* Search FDR list starting at tab[i] for the PDR that best matches 2121 OFFSET. Normally, the FDR list is only one entry long. */ 2122 best_fdr = NULL; 2123 do 2124 { 2125 /* eraxxon: 'dist' and 'min_dist' can be negative now 2126 because we iterate over every FDR rather than just ones 2127 with a base address less than or equal to 'offset'. */ 2128 bfd_signed_vma dist = -1, min_dist = -1; 2129 char *pdr_hold; 2130 char *pdr_end; 2131 2132 fdr_ptr = tab[i].fdr; 2133 2134 pdr_ptr = ((char *) debug_info->external_pdr 2135 + fdr_ptr->ipdFirst * external_pdr_size); 2136 pdr_end = pdr_ptr + fdr_ptr->cpd * external_pdr_size; 2137 (*debug_swap->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr); 2138 /* Find PDR that is closest to OFFSET. If pdr.prof is set, 2139 the procedure entry-point *may* be 0x10 below pdr.adr. We 2140 simply pretend that pdr.prof *implies* a lower entry-point. 2141 This is safe because it just means that may identify 4 NOPs 2142 in front of the function as belonging to the function. */ 2143 for (pdr_hold = NULL; 2144 pdr_ptr < pdr_end; 2145 (pdr_ptr += external_pdr_size, 2146 (*debug_swap->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr))) 2147 { 2148 if (offset >= (pdr.adr - 0x10 * pdr.prof)) 2149 { 2150 dist = offset - (pdr.adr - 0x10 * pdr.prof); 2151 2152 /* eraxxon: 'dist' can be negative now. Note that 2153 'min_dist' can be negative if 'pdr_hold' below is NULL. */ 2154 if (!pdr_hold || (dist >= 0 && dist < min_dist)) 2155 { 2156 min_dist = dist; 2157 pdr_hold = pdr_ptr; 2158 } 2159 } 2160 } 2161 2162 if (!best_pdr || (min_dist >= 0 && min_dist < best_dist)) 2163 { 2164 best_dist = (bfd_vma) min_dist; 2165 best_fdr = fdr_ptr; 2166 best_pdr = pdr_hold; 2167 } 2168 /* Continue looping until base_addr of next entry is different. */ 2169 } 2170 /* eraxxon: We want to iterate over all FDRs. 2171 See previous comment about 'fdrtab_lookup'. */ 2172 while (++i < line_info->fdrtab_len); 2173 2174 if (!best_fdr || !best_pdr) 2175 return FALSE; /* Shouldn't happen... */ 2176 2177 /* Phew, finally we got something that we can hold onto. */ 2178 fdr_ptr = best_fdr; 2179 pdr_ptr = best_pdr; 2180 (*debug_swap->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr); 2181 /* Now we can look for the actual line number. The line numbers 2182 are stored in a very funky format, which I won't try to 2183 describe. The search is bounded by the end of the FDRs line 2184 number entries. */ 2185 line_end = debug_info->line + fdr_ptr->cbLineOffset + fdr_ptr->cbLine; 2186 2187 /* Make offset relative to procedure entry. */ 2188 offset -= pdr.adr - 0x10 * pdr.prof; 2189 lineno = pdr.lnLow; 2190 line_ptr = debug_info->line + fdr_ptr->cbLineOffset + pdr.cbLineOffset; 2191 while (line_ptr < line_end) 2192 { 2193 int delta; 2194 unsigned int count; 2195 2196 delta = *line_ptr >> 4; 2197 if (delta >= 0x8) 2198 delta -= 0x10; 2199 count = (*line_ptr & 0xf) + 1; 2200 ++line_ptr; 2201 if (delta == -8) 2202 { 2203 delta = (((line_ptr[0]) & 0xff) << 8) + ((line_ptr[1]) & 0xff); 2204 if (delta >= 0x8000) 2205 delta -= 0x10000; 2206 line_ptr += 2; 2207 } 2208 lineno += delta; 2209 if (offset < count * 4) 2210 { 2211 line_info->cache.stop += count * 4 - offset; 2212 break; 2213 } 2214 offset -= count * 4; 2215 } 2216 2217 /* If fdr_ptr->rss is -1, then this file does not have full 2218 symbols, at least according to gdb/mipsread.c. */ 2219 if (fdr_ptr->rss == -1) 2220 { 2221 line_info->cache.filename = NULL; 2222 if (pdr.isym == -1) 2223 line_info->cache.functionname = NULL; 2224 else 2225 { 2226 EXTR proc_ext; 2227 2228 (*debug_swap->swap_ext_in) 2229 (abfd, 2230 ((char *) debug_info->external_ext 2231 + pdr.isym * debug_swap->external_ext_size), 2232 &proc_ext); 2233 line_info->cache.functionname = (debug_info->ssext 2234 + proc_ext.asym.iss); 2235 } 2236 } 2237 else 2238 { 2239 SYMR proc_sym; 2240 2241 line_info->cache.filename = (debug_info->ss 2242 + fdr_ptr->issBase 2243 + fdr_ptr->rss); 2244 (*debug_swap->swap_sym_in) 2245 (abfd, 2246 ((char *) debug_info->external_sym 2247 + ((fdr_ptr->isymBase + pdr.isym) 2248 * debug_swap->external_sym_size)), 2249 &proc_sym); 2250 line_info->cache.functionname = (debug_info->ss 2251 + fdr_ptr->issBase 2252 + proc_sym.iss); 2253 } 2254 if (lineno == ilineNil) 2255 lineno = 0; 2256 line_info->cache.line_num = lineno; 2257 } 2258 else 2259 { 2260 bfd_size_type external_sym_size; 2261 const char *directory_name; 2262 const char *main_file_name; 2263 const char *current_file_name; 2264 const char *function_name; 2265 const char *line_file_name; 2266 bfd_vma low_func_vma; 2267 bfd_vma low_line_vma; 2268 bfd_boolean past_line; 2269 bfd_boolean past_fn; 2270 char *sym_ptr, *sym_ptr_end; 2271 size_t len, funclen; 2272 char *buffer = NULL; 2273 2274 /* This file uses stabs debugging information. When gcc is not 2275 optimizing, it will put the line number information before 2276 the function name stabs entry. When gcc is optimizing, it 2277 will put the stabs entry for all the function first, followed 2278 by the line number information. (This appears to happen 2279 because of the two output files used by the -mgpopt switch, 2280 which is implied by -O). This means that we must keep 2281 looking through the symbols until we find both a line number 2282 and a function name which are beyond the address we want. */ 2283 2284 line_info->cache.filename = NULL; 2285 line_info->cache.functionname = NULL; 2286 line_info->cache.line_num = 0; 2287 2288 directory_name = NULL; 2289 main_file_name = NULL; 2290 current_file_name = NULL; 2291 function_name = NULL; 2292 line_file_name = NULL; 2293 low_func_vma = 0; 2294 low_line_vma = 0; 2295 past_line = FALSE; 2296 past_fn = FALSE; 2297 2298 external_sym_size = debug_swap->external_sym_size; 2299 2300 sym_ptr = ((char *) debug_info->external_sym 2301 + (fdr_ptr->isymBase + 2) * external_sym_size); 2302 sym_ptr_end = sym_ptr + (fdr_ptr->csym - 2) * external_sym_size; 2303 for (; 2304 sym_ptr < sym_ptr_end && (! past_line || ! past_fn); 2305 sym_ptr += external_sym_size) 2306 { 2307 SYMR sym; 2308 2309 (*debug_swap->swap_sym_in) (abfd, sym_ptr, &sym); 2310 2311 if (ECOFF_IS_STAB (&sym)) 2312 { 2313 switch (ECOFF_UNMARK_STAB (sym.index)) 2314 { 2315 case N_SO: 2316 main_file_name = current_file_name = 2317 debug_info->ss + fdr_ptr->issBase + sym.iss; 2318 2319 /* Check the next symbol to see if it is also an 2320 N_SO symbol. */ 2321 if (sym_ptr + external_sym_size < sym_ptr_end) 2322 { 2323 SYMR nextsym; 2324 2325 (*debug_swap->swap_sym_in) (abfd, 2326 sym_ptr + external_sym_size, 2327 &nextsym); 2328 if (ECOFF_IS_STAB (&nextsym) 2329 && ECOFF_UNMARK_STAB (nextsym.index) == N_SO) 2330 { 2331 directory_name = current_file_name; 2332 main_file_name = current_file_name = 2333 debug_info->ss + fdr_ptr->issBase + nextsym.iss; 2334 sym_ptr += external_sym_size; 2335 } 2336 } 2337 break; 2338 2339 case N_SOL: 2340 current_file_name = 2341 debug_info->ss + fdr_ptr->issBase + sym.iss; 2342 break; 2343 2344 case N_FUN: 2345 if (sym.value > offset) 2346 past_fn = TRUE; 2347 else if (sym.value >= low_func_vma) 2348 { 2349 low_func_vma = sym.value; 2350 function_name = 2351 debug_info->ss + fdr_ptr->issBase + sym.iss; 2352 } 2353 break; 2354 } 2355 } 2356 else if (sym.st == stLabel && sym.index != indexNil) 2357 { 2358 if (sym.value > offset) 2359 past_line = TRUE; 2360 else if (sym.value >= low_line_vma) 2361 { 2362 low_line_vma = sym.value; 2363 line_file_name = current_file_name; 2364 line_info->cache.line_num = sym.index; 2365 } 2366 } 2367 } 2368 2369 if (line_info->cache.line_num != 0) 2370 main_file_name = line_file_name; 2371 2372 /* We need to remove the stuff after the colon in the function 2373 name. We also need to put the directory name and the file 2374 name together. */ 2375 if (function_name == NULL) 2376 len = funclen = 0; 2377 else 2378 len = funclen = strlen (function_name) + 1; 2379 2380 if (main_file_name != NULL 2381 && directory_name != NULL 2382 && main_file_name[0] != '/') 2383 len += strlen (directory_name) + strlen (main_file_name) + 1; 2384 2385 if (len != 0) 2386 { 2387 if (line_info->find_buffer != NULL) 2388 free (line_info->find_buffer); 2389 buffer = (char *) bfd_malloc ((bfd_size_type) len); 2390 if (buffer == NULL) 2391 return FALSE; 2392 line_info->find_buffer = buffer; 2393 } 2394 2395 if (function_name != NULL) 2396 { 2397 char *colon; 2398 2399 strcpy (buffer, function_name); 2400 colon = strchr (buffer, ':'); 2401 if (colon != NULL) 2402 *colon = '\0'; 2403 line_info->cache.functionname = buffer; 2404 } 2405 2406 if (main_file_name != NULL) 2407 { 2408 if (directory_name == NULL || main_file_name[0] == '/') 2409 line_info->cache.filename = main_file_name; 2410 else 2411 { 2412 sprintf (buffer + funclen, "%s%s", directory_name, 2413 main_file_name); 2414 line_info->cache.filename = buffer + funclen; 2415 } 2416 } 2417 } 2418 2419 return TRUE; 2420 } 2421 2422 /* Do the work of find_nearest_line. */ 2423 2424 bfd_boolean 2425 _bfd_ecoff_locate_line (abfd, section, offset, debug_info, debug_swap, 2426 line_info, filename_ptr, functionname_ptr, retline_ptr) 2427 bfd *abfd; 2428 asection *section; 2429 bfd_vma offset; 2430 struct ecoff_debug_info * const debug_info; 2431 const struct ecoff_debug_swap * const debug_swap; 2432 struct ecoff_find_line *line_info; 2433 const char **filename_ptr; 2434 const char **functionname_ptr; 2435 unsigned int *retline_ptr; 2436 { 2437 offset += section->vma; 2438 2439 if (line_info->cache.sect == NULL 2440 || line_info->cache.sect != section 2441 || offset < line_info->cache.start 2442 || offset >= line_info->cache.stop) 2443 { 2444 line_info->cache.sect = section; 2445 line_info->cache.start = offset; 2446 line_info->cache.stop = offset; 2447 if (! lookup_line (abfd, debug_info, debug_swap, line_info)) 2448 { 2449 line_info->cache.sect = NULL; 2450 return FALSE; 2451 } 2452 } 2453 2454 *filename_ptr = line_info->cache.filename; 2455 *functionname_ptr = line_info->cache.functionname; 2456 *retline_ptr = line_info->cache.line_num; 2457 2458 return TRUE; 2459 } 2460 2461 /* These routines copy symbolic information into a memory buffer. 2463 2464 FIXME: The whole point of the shuffle code is to avoid storing 2465 everything in memory, since the linker is such a memory hog. This 2466 code makes that effort useless. It is only called by the MIPS ELF 2467 code when generating a shared library, so it is not that big a 2468 deal, but it should be fixed eventually. */ 2469 2470 /* Collect a shuffle into a memory buffer. */ 2471 2472 static bfd_boolean ecoff_collect_shuffle 2473 PARAMS ((struct shuffle *, bfd_byte *)); 2474 2475 static bfd_boolean 2476 ecoff_collect_shuffle (l, buff) 2477 struct shuffle *l; 2478 bfd_byte *buff; 2479 { 2480 unsigned long total; 2481 2482 total = 0; 2483 for (; l != (struct shuffle *) NULL; l = l->next) 2484 { 2485 if (! l->filep) 2486 memcpy (buff, l->u.memory, l->size); 2487 else 2488 { 2489 if (bfd_seek (l->u.file.input_bfd, l->u.file.offset, SEEK_SET) != 0 2490 || (bfd_bread (buff, (bfd_size_type) l->size, l->u.file.input_bfd) 2491 != l->size)) 2492 return FALSE; 2493 } 2494 total += l->size; 2495 buff += l->size; 2496 } 2497 2498 return TRUE; 2499 } 2500 2501 /* Copy PDR information into a memory buffer. */ 2502 2503 bfd_boolean 2504 _bfd_ecoff_get_accumulated_pdr (handle, buff) 2505 PTR handle; 2506 bfd_byte *buff; 2507 { 2508 struct accumulate *ainfo = (struct accumulate *) handle; 2509 2510 return ecoff_collect_shuffle (ainfo->pdr, buff); 2511 } 2512 2513 /* Copy symbol information into a memory buffer. */ 2514 2515 bfd_boolean 2516 _bfd_ecoff_get_accumulated_sym (handle, buff) 2517 PTR handle; 2518 bfd_byte *buff; 2519 { 2520 struct accumulate *ainfo = (struct accumulate *) handle; 2521 2522 return ecoff_collect_shuffle (ainfo->sym, buff); 2523 } 2524 2525 /* Copy the string table into a memory buffer. */ 2526 2527 bfd_boolean 2528 _bfd_ecoff_get_accumulated_ss (handle, buff) 2529 PTR handle; 2530 bfd_byte *buff; 2531 { 2532 struct accumulate *ainfo = (struct accumulate *) handle; 2533 struct string_hash_entry *sh; 2534 unsigned long total; 2535 2536 /* The string table is written out from the hash table if this is a 2537 final link. */ 2538 BFD_ASSERT (ainfo->ss == (struct shuffle *) NULL); 2539 *buff++ = '\0'; 2540 total = 1; 2541 BFD_ASSERT (ainfo->ss_hash == NULL || ainfo->ss_hash->val == 1); 2542 for (sh = ainfo->ss_hash; 2543 sh != (struct string_hash_entry *) NULL; 2544 sh = sh->next) 2545 { 2546 size_t len; 2547 2548 len = strlen (sh->root.string); 2549 memcpy (buff, (PTR) sh->root.string, len + 1); 2550 total += len + 1; 2551 buff += len + 1; 2552 } 2553 2554 return TRUE; 2555 } 2556
Indexes created Wed Mar 18 00:23:26 UTC 2026