| 1 | /* coff object file format |
| 2 | Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
| 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GAS. |
| 7 | |
| 8 | GAS 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 2, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | GAS 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 GAS; see the file COPYING. If not, write to the Free |
| 20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 21 | 02110-1301, USA. */ |
| 22 | |
| 23 | #define OBJ_HEADER "obj-coff.h" |
| 24 | |
| 25 | #include "as.h" |
| 26 | #include "obstack.h" |
| 27 | #include "subsegs.h" |
| 28 | |
| 29 | #ifdef TE_PE |
| 30 | #include "coff/pe.h" |
| 31 | #endif |
| 32 | |
| 33 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
| 34 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) |
| 35 | |
| 36 | /* I think this is probably always correct. */ |
| 37 | #ifndef KEEP_RELOC_INFO |
| 38 | #define KEEP_RELOC_INFO |
| 39 | #endif |
| 40 | |
| 41 | /* The BFD_ASSEMBLER version of obj_coff_section will use this macro to set |
| 42 | a new section's attributes when a directive has no valid flags or the |
| 43 | "w" flag is used. This default should be appropriate for most. */ |
| 44 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
| 45 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) |
| 46 | #endif |
| 47 | |
| 48 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
| 49 | from .def and .endef. */ |
| 50 | static symbolS *def_symbol_in_progress; |
| 51 | #ifdef TE_PE |
| 52 | /* PE weak alternate symbols begin with this string. */ |
| 53 | static const char weak_altprefix[] = ".weak."; |
| 54 | #endif /* TE_PE */ |
| 55 | |
| 56 | typedef struct |
| 57 | { |
| 58 | unsigned long chunk_size; |
| 59 | unsigned long element_size; |
| 60 | unsigned long size; |
| 61 | char *data; |
| 62 | unsigned long pointer; |
| 63 | } |
| 64 | stack; |
| 65 | |
| 66 | \f |
| 67 | /* Stack stuff. */ |
| 68 | |
| 69 | static stack * |
| 70 | stack_init (unsigned long chunk_size, |
| 71 | unsigned long element_size) |
| 72 | { |
| 73 | stack *st; |
| 74 | |
| 75 | st = malloc (sizeof (* st)); |
| 76 | if (!st) |
| 77 | return NULL; |
| 78 | st->data = malloc (chunk_size); |
| 79 | if (!st->data) |
| 80 | { |
| 81 | free (st); |
| 82 | return NULL; |
| 83 | } |
| 84 | st->pointer = 0; |
| 85 | st->size = chunk_size; |
| 86 | st->chunk_size = chunk_size; |
| 87 | st->element_size = element_size; |
| 88 | return st; |
| 89 | } |
| 90 | |
| 91 | static char * |
| 92 | stack_push (stack *st, char *element) |
| 93 | { |
| 94 | if (st->pointer + st->element_size >= st->size) |
| 95 | { |
| 96 | st->size += st->chunk_size; |
| 97 | if ((st->data = xrealloc (st->data, st->size)) == NULL) |
| 98 | return NULL; |
| 99 | } |
| 100 | memcpy (st->data + st->pointer, element, st->element_size); |
| 101 | st->pointer += st->element_size; |
| 102 | return st->data + st->pointer; |
| 103 | } |
| 104 | |
| 105 | static char * |
| 106 | stack_pop (stack *st) |
| 107 | { |
| 108 | if (st->pointer < st->element_size) |
| 109 | { |
| 110 | st->pointer = 0; |
| 111 | return NULL; |
| 112 | } |
| 113 | st->pointer -= st->element_size; |
| 114 | return st->data + st->pointer; |
| 115 | } |
| 116 | \f |
| 117 | /* Maintain a list of the tagnames of the structures. */ |
| 118 | |
| 119 | static struct hash_control *tag_hash; |
| 120 | |
| 121 | static void |
| 122 | tag_init (void) |
| 123 | { |
| 124 | tag_hash = hash_new (); |
| 125 | } |
| 126 | |
| 127 | static void |
| 128 | tag_insert (const char *name, symbolS *symbolP) |
| 129 | { |
| 130 | const char *error_string; |
| 131 | |
| 132 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) |
| 133 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
| 134 | name, error_string); |
| 135 | } |
| 136 | |
| 137 | static symbolS * |
| 138 | tag_find (char *name) |
| 139 | { |
| 140 | return (symbolS *) hash_find (tag_hash, name); |
| 141 | } |
| 142 | |
| 143 | static symbolS * |
| 144 | tag_find_or_make (char *name) |
| 145 | { |
| 146 | symbolS *symbolP; |
| 147 | |
| 148 | if ((symbolP = tag_find (name)) == NULL) |
| 149 | { |
| 150 | symbolP = symbol_new (name, undefined_section, |
| 151 | 0, &zero_address_frag); |
| 152 | |
| 153 | tag_insert (S_GET_NAME (symbolP), symbolP); |
| 154 | #ifdef BFD_ASSEMBLER |
| 155 | symbol_table_insert (symbolP); |
| 156 | #endif |
| 157 | } |
| 158 | |
| 159 | return symbolP; |
| 160 | } |
| 161 | |
| 162 | /* We accept the .bss directive to set the section for backward |
| 163 | compatibility with earlier versions of gas. */ |
| 164 | |
| 165 | static void |
| 166 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
| 167 | { |
| 168 | if (*input_line_pointer == '\n') |
| 169 | subseg_new (".bss", get_absolute_expression ()); |
| 170 | else |
| 171 | s_lcomm (0); |
| 172 | } |
| 173 | |
| 174 | #ifdef BFD_ASSEMBLER |
| 175 | |
| 176 | #define GET_FILENAME_STRING(X) \ |
| 177 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
| 178 | |
| 179 | /* @@ Ick. */ |
| 180 | static segT |
| 181 | fetch_coff_debug_section (void) |
| 182 | { |
| 183 | static segT debug_section; |
| 184 | |
| 185 | if (!debug_section) |
| 186 | { |
| 187 | const asymbol *s; |
| 188 | |
| 189 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); |
| 190 | assert (s != 0); |
| 191 | debug_section = s->section; |
| 192 | } |
| 193 | return debug_section; |
| 194 | } |
| 195 | |
| 196 | void |
| 197 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
| 198 | { |
| 199 | combined_entry_type *entry, *p; |
| 200 | |
| 201 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
| 202 | p = coffsymbol (symbol_get_bfdsym (val))->native; |
| 203 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
| 204 | entry->fix_end = 1; |
| 205 | } |
| 206 | |
| 207 | static void |
| 208 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
| 209 | { |
| 210 | combined_entry_type *entry, *p; |
| 211 | |
| 212 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
| 213 | p = coffsymbol (symbol_get_bfdsym (val))->native; |
| 214 | entry->u.auxent.x_sym.x_tagndx.p = p; |
| 215 | entry->fix_tag = 1; |
| 216 | } |
| 217 | |
| 218 | static int |
| 219 | S_GET_DATA_TYPE (symbolS *sym) |
| 220 | { |
| 221 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
| 222 | } |
| 223 | |
| 224 | int |
| 225 | S_SET_DATA_TYPE (symbolS *sym, int val) |
| 226 | { |
| 227 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
| 228 | return val; |
| 229 | } |
| 230 | |
| 231 | int |
| 232 | S_GET_STORAGE_CLASS (symbolS *sym) |
| 233 | { |
| 234 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
| 235 | } |
| 236 | |
| 237 | int |
| 238 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
| 239 | { |
| 240 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
| 241 | return val; |
| 242 | } |
| 243 | |
| 244 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
| 245 | |
| 246 | static void |
| 247 | c_symbol_merge (symbolS *debug, symbolS *normal) |
| 248 | { |
| 249 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); |
| 250 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); |
| 251 | |
| 252 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) |
| 253 | /* Take the most we have. */ |
| 254 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); |
| 255 | |
| 256 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) |
| 257 | /* Move all the auxiliary information. */ |
| 258 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), |
| 259 | (S_GET_NUMBER_AUXILIARY (debug) |
| 260 | * sizeof (*SYM_AUXINFO (debug)))); |
| 261 | |
| 262 | /* Move the debug flags. */ |
| 263 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
| 264 | } |
| 265 | |
| 266 | void |
| 267 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
| 268 | { |
| 269 | symbolS *symbolP; |
| 270 | |
| 271 | /* BFD converts filename to a .file symbol with an aux entry. It |
| 272 | also handles chaining. */ |
| 273 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
| 274 | |
| 275 | S_SET_STORAGE_CLASS (symbolP, C_FILE); |
| 276 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
| 277 | |
| 278 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
| 279 | |
| 280 | #ifndef NO_LISTING |
| 281 | { |
| 282 | extern int listing; |
| 283 | |
| 284 | if (listing) |
| 285 | listing_source_file (filename); |
| 286 | } |
| 287 | #endif |
| 288 | |
| 289 | /* Make sure that the symbol is first on the symbol chain. */ |
| 290 | if (symbol_rootP != symbolP) |
| 291 | { |
| 292 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 293 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | /* Line number handling. */ |
| 298 | |
| 299 | struct line_no |
| 300 | { |
| 301 | struct line_no *next; |
| 302 | fragS *frag; |
| 303 | alent l; |
| 304 | }; |
| 305 | |
| 306 | int coff_line_base; |
| 307 | |
| 308 | /* Symbol of last function, which we should hang line#s off of. */ |
| 309 | static symbolS *line_fsym; |
| 310 | |
| 311 | #define in_function() (line_fsym != 0) |
| 312 | #define clear_function() (line_fsym = 0) |
| 313 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) |
| 314 | |
| 315 | \f |
| 316 | void |
| 317 | coff_obj_symbol_new_hook (symbolS *symbolP) |
| 318 | { |
| 319 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); |
| 320 | char * s = xmalloc (sz); |
| 321 | |
| 322 | memset (s, 0, sz); |
| 323 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
| 324 | |
| 325 | S_SET_DATA_TYPE (symbolP, T_NULL); |
| 326 | S_SET_STORAGE_CLASS (symbolP, 0); |
| 327 | S_SET_NUMBER_AUXILIARY (symbolP, 0); |
| 328 | |
| 329 | if (S_IS_STRING (symbolP)) |
| 330 | SF_SET_STRING (symbolP); |
| 331 | |
| 332 | if (S_IS_LOCAL (symbolP)) |
| 333 | SF_SET_LOCAL (symbolP); |
| 334 | } |
| 335 | |
| 336 | \f |
| 337 | /* Handle .ln directives. */ |
| 338 | |
| 339 | static symbolS *current_lineno_sym; |
| 340 | static struct line_no *line_nos; |
| 341 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
| 342 | int coff_n_line_nos; |
| 343 | |
| 344 | static void |
| 345 | add_lineno (fragS * frag, addressT offset, int num) |
| 346 | { |
| 347 | struct line_no * new_line = xmalloc (sizeof (* new_line)); |
| 348 | |
| 349 | if (!current_lineno_sym) |
| 350 | abort (); |
| 351 | |
| 352 | #ifndef OBJ_XCOFF |
| 353 | /* The native aix assembler accepts negative line number. */ |
| 354 | |
| 355 | if (num <= 0) |
| 356 | { |
| 357 | /* Zero is used as an end marker in the file. */ |
| 358 | as_warn (_("Line numbers must be positive integers\n")); |
| 359 | num = 1; |
| 360 | } |
| 361 | #endif /* OBJ_XCOFF */ |
| 362 | new_line->next = line_nos; |
| 363 | new_line->frag = frag; |
| 364 | new_line->l.line_number = num; |
| 365 | new_line->l.u.offset = offset; |
| 366 | line_nos = new_line; |
| 367 | coff_n_line_nos++; |
| 368 | } |
| 369 | |
| 370 | void |
| 371 | coff_add_linesym (symbolS *sym) |
| 372 | { |
| 373 | if (line_nos) |
| 374 | { |
| 375 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
| 376 | (alent *) line_nos; |
| 377 | coff_n_line_nos++; |
| 378 | line_nos = 0; |
| 379 | } |
| 380 | current_lineno_sym = sym; |
| 381 | } |
| 382 | |
| 383 | static void |
| 384 | obj_coff_ln (int appline) |
| 385 | { |
| 386 | int l; |
| 387 | |
| 388 | if (! appline && def_symbol_in_progress != NULL) |
| 389 | { |
| 390 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); |
| 391 | demand_empty_rest_of_line (); |
| 392 | return; |
| 393 | } |
| 394 | |
| 395 | l = get_absolute_expression (); |
| 396 | |
| 397 | /* If there is no lineno symbol, treat a .ln |
| 398 | directive as if it were a .appline directive. */ |
| 399 | if (appline || current_lineno_sym == NULL) |
| 400 | new_logical_line ((char *) NULL, l - 1); |
| 401 | else |
| 402 | add_lineno (frag_now, frag_now_fix (), l); |
| 403 | |
| 404 | #ifndef NO_LISTING |
| 405 | { |
| 406 | extern int listing; |
| 407 | |
| 408 | if (listing) |
| 409 | { |
| 410 | if (! appline) |
| 411 | l += coff_line_base - 1; |
| 412 | listing_source_line (l); |
| 413 | } |
| 414 | } |
| 415 | #endif |
| 416 | |
| 417 | demand_empty_rest_of_line (); |
| 418 | } |
| 419 | |
| 420 | /* .loc is essentially the same as .ln; parse it for assembler |
| 421 | compatibility. */ |
| 422 | |
| 423 | static void |
| 424 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
| 425 | { |
| 426 | int lineno; |
| 427 | |
| 428 | /* FIXME: Why do we need this check? We need it for ECOFF, but why |
| 429 | do we need it for COFF? */ |
| 430 | if (now_seg != text_section) |
| 431 | { |
| 432 | as_warn (_(".loc outside of .text")); |
| 433 | demand_empty_rest_of_line (); |
| 434 | return; |
| 435 | } |
| 436 | |
| 437 | if (def_symbol_in_progress != NULL) |
| 438 | { |
| 439 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); |
| 440 | demand_empty_rest_of_line (); |
| 441 | return; |
| 442 | } |
| 443 | |
| 444 | /* Skip the file number. */ |
| 445 | SKIP_WHITESPACE (); |
| 446 | get_absolute_expression (); |
| 447 | SKIP_WHITESPACE (); |
| 448 | |
| 449 | lineno = get_absolute_expression (); |
| 450 | |
| 451 | #ifndef NO_LISTING |
| 452 | { |
| 453 | extern int listing; |
| 454 | |
| 455 | if (listing) |
| 456 | { |
| 457 | lineno += coff_line_base - 1; |
| 458 | listing_source_line (lineno); |
| 459 | } |
| 460 | } |
| 461 | #endif |
| 462 | |
| 463 | demand_empty_rest_of_line (); |
| 464 | |
| 465 | add_lineno (frag_now, frag_now_fix (), lineno); |
| 466 | } |
| 467 | |
| 468 | /* Handle the .ident pseudo-op. */ |
| 469 | |
| 470 | static void |
| 471 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
| 472 | { |
| 473 | segT current_seg = now_seg; |
| 474 | subsegT current_subseg = now_subseg; |
| 475 | |
| 476 | #ifdef TE_PE |
| 477 | { |
| 478 | segT sec; |
| 479 | |
| 480 | /* We could put it in .comment, but that creates an extra section |
| 481 | that shouldn't be loaded into memory, which requires linker |
| 482 | changes... For now, until proven otherwise, use .rdata. */ |
| 483 | sec = subseg_new (".rdata$zzz", 0); |
| 484 | bfd_set_section_flags (stdoutput, sec, |
| 485 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) |
| 486 | & bfd_applicable_section_flags (stdoutput))); |
| 487 | } |
| 488 | #else |
| 489 | subseg_new (".comment", 0); |
| 490 | #endif |
| 491 | |
| 492 | stringer (1); |
| 493 | subseg_set (current_seg, current_subseg); |
| 494 | } |
| 495 | |
| 496 | /* Handle .def directives. |
| 497 | |
| 498 | One might ask : why can't we symbol_new if the symbol does not |
| 499 | already exist and fill it with debug information. Because of |
| 500 | the C_EFCN special symbol. It would clobber the value of the |
| 501 | function symbol before we have a chance to notice that it is |
| 502 | a C_EFCN. And a second reason is that the code is more clear this |
| 503 | way. (at least I think it is :-). */ |
| 504 | |
| 505 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') |
| 506 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ |
| 507 | *input_line_pointer == '\t') \ |
| 508 | input_line_pointer++; |
| 509 | |
| 510 | static void |
| 511 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
| 512 | { |
| 513 | char name_end; /* Char after the end of name. */ |
| 514 | char *symbol_name; /* Name of the debug symbol. */ |
| 515 | char *symbol_name_copy; /* Temporary copy of the name. */ |
| 516 | unsigned int symbol_name_length; |
| 517 | |
| 518 | if (def_symbol_in_progress != NULL) |
| 519 | { |
| 520 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); |
| 521 | demand_empty_rest_of_line (); |
| 522 | return; |
| 523 | } |
| 524 | |
| 525 | SKIP_WHITESPACES (); |
| 526 | |
| 527 | symbol_name = input_line_pointer; |
| 528 | name_end = get_symbol_end (); |
| 529 | symbol_name_length = strlen (symbol_name); |
| 530 | symbol_name_copy = xmalloc (symbol_name_length + 1); |
| 531 | strcpy (symbol_name_copy, symbol_name); |
| 532 | #ifdef tc_canonicalize_symbol_name |
| 533 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); |
| 534 | #endif |
| 535 | |
| 536 | /* Initialize the new symbol. */ |
| 537 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
| 538 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
| 539 | S_SET_VALUE (def_symbol_in_progress, 0); |
| 540 | |
| 541 | if (S_IS_STRING (def_symbol_in_progress)) |
| 542 | SF_SET_STRING (def_symbol_in_progress); |
| 543 | |
| 544 | *input_line_pointer = name_end; |
| 545 | |
| 546 | demand_empty_rest_of_line (); |
| 547 | } |
| 548 | |
| 549 | unsigned int dim_index; |
| 550 | |
| 551 | static void |
| 552 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
| 553 | { |
| 554 | symbolS *symbolP = NULL; |
| 555 | |
| 556 | dim_index = 0; |
| 557 | if (def_symbol_in_progress == NULL) |
| 558 | { |
| 559 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); |
| 560 | demand_empty_rest_of_line (); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | /* Set the section number according to storage class. */ |
| 565 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
| 566 | { |
| 567 | case C_STRTAG: |
| 568 | case C_ENTAG: |
| 569 | case C_UNTAG: |
| 570 | SF_SET_TAG (def_symbol_in_progress); |
| 571 | /* Fall through. */ |
| 572 | case C_FILE: |
| 573 | case C_TPDEF: |
| 574 | SF_SET_DEBUG (def_symbol_in_progress); |
| 575 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); |
| 576 | break; |
| 577 | |
| 578 | case C_EFCN: |
| 579 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
| 580 | /* Fall through. */ |
| 581 | case C_BLOCK: |
| 582 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
| 583 | /* Fall through. */ |
| 584 | case C_FCN: |
| 585 | { |
| 586 | const char *name; |
| 587 | |
| 588 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
| 589 | |
| 590 | name = S_GET_NAME (def_symbol_in_progress); |
| 591 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
| 592 | { |
| 593 | switch (name[1]) |
| 594 | { |
| 595 | case 'b': |
| 596 | /* .bf */ |
| 597 | if (! in_function ()) |
| 598 | as_warn (_("`%s' symbol without preceding function"), name); |
| 599 | /* Will need relocating. */ |
| 600 | SF_SET_PROCESS (def_symbol_in_progress); |
| 601 | clear_function (); |
| 602 | break; |
| 603 | #ifdef TE_PE |
| 604 | case 'e': |
| 605 | /* .ef */ |
| 606 | /* The MS compilers output the actual endline, not the |
| 607 | function-relative one... we want to match without |
| 608 | changing the assembler input. */ |
| 609 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
| 610 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
| 611 | + coff_line_base)); |
| 612 | break; |
| 613 | #endif |
| 614 | } |
| 615 | } |
| 616 | } |
| 617 | break; |
| 618 | |
| 619 | #ifdef C_AUTOARG |
| 620 | case C_AUTOARG: |
| 621 | #endif /* C_AUTOARG */ |
| 622 | case C_AUTO: |
| 623 | case C_REG: |
| 624 | case C_ARG: |
| 625 | case C_REGPARM: |
| 626 | case C_FIELD: |
| 627 | |
| 628 | /* According to the COFF documentation: |
| 629 | |
| 630 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html |
| 631 | |
| 632 | A special section number (-2) marks symbolic debugging symbols, |
| 633 | including structure/union/enumeration tag names, typedefs, and |
| 634 | the name of the file. A section number of -1 indicates that the |
| 635 | symbol has a value but is not relocatable. Examples of |
| 636 | absolute-valued symbols include automatic and register variables, |
| 637 | function arguments, and .eos symbols. |
| 638 | |
| 639 | But from Ian Lance Taylor: |
| 640 | |
| 641 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html |
| 642 | |
| 643 | the actual tools all marked them as section -1. So the GNU COFF |
| 644 | assembler follows historical COFF assemblers. |
| 645 | |
| 646 | However, it causes problems for djgpp |
| 647 | |
| 648 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html |
| 649 | |
| 650 | By defining STRICTCOFF, a COFF port can make the assembler to |
| 651 | follow the documented behavior. */ |
| 652 | #ifdef STRICTCOFF |
| 653 | case C_MOS: |
| 654 | case C_MOE: |
| 655 | case C_MOU: |
| 656 | case C_EOS: |
| 657 | #endif |
| 658 | SF_SET_DEBUG (def_symbol_in_progress); |
| 659 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
| 660 | break; |
| 661 | |
| 662 | #ifndef STRICTCOFF |
| 663 | case C_MOS: |
| 664 | case C_MOE: |
| 665 | case C_MOU: |
| 666 | case C_EOS: |
| 667 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
| 668 | break; |
| 669 | #endif |
| 670 | |
| 671 | case C_EXT: |
| 672 | case C_WEAKEXT: |
| 673 | #ifdef TE_PE |
| 674 | case C_NT_WEAK: |
| 675 | #endif |
| 676 | case C_STAT: |
| 677 | case C_LABEL: |
| 678 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
| 679 | break; |
| 680 | |
| 681 | default: |
| 682 | case C_USTATIC: |
| 683 | case C_EXTDEF: |
| 684 | case C_ULABEL: |
| 685 | as_warn (_("unexpected storage class %d"), |
| 686 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); |
| 687 | break; |
| 688 | } |
| 689 | |
| 690 | /* Now that we have built a debug symbol, try to find if we should |
| 691 | merge with an existing symbol or not. If a symbol is C_EFCN or |
| 692 | absolute_section or untagged SEG_DEBUG it never merges. We also |
| 693 | don't merge labels, which are in a different namespace, nor |
| 694 | symbols which have not yet been defined since they are typically |
| 695 | unique, nor do we merge tags with non-tags. */ |
| 696 | |
| 697 | /* Two cases for functions. Either debug followed by definition or |
| 698 | definition followed by debug. For definition first, we will |
| 699 | merge the debug symbol into the definition. For debug first, the |
| 700 | lineno entry MUST point to the definition function or else it |
| 701 | will point off into space when obj_crawl_symbol_chain() merges |
| 702 | the debug symbol into the real symbol. Therefor, let's presume |
| 703 | the debug symbol is a real function reference. */ |
| 704 | |
| 705 | /* FIXME-SOON If for some reason the definition label/symbol is |
| 706 | never seen, this will probably leave an undefined symbol at link |
| 707 | time. */ |
| 708 | |
| 709 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN |
| 710 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
| 711 | || (streq (bfd_get_section_name (stdoutput, |
| 712 | S_GET_SEGMENT (def_symbol_in_progress)), |
| 713 | "*DEBUG*") |
| 714 | && !SF_GET_TAG (def_symbol_in_progress)) |
| 715 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section |
| 716 | || ! symbol_constant_p (def_symbol_in_progress) |
| 717 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
| 718 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
| 719 | { |
| 720 | /* If it already is at the end of the symbol list, do nothing */ |
| 721 | if (def_symbol_in_progress != symbol_lastP) |
| 722 | { |
| 723 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
| 724 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, |
| 725 | &symbol_lastP); |
| 726 | } |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | /* This symbol already exists, merge the newly created symbol |
| 731 | into the old one. This is not mandatory. The linker can |
| 732 | handle duplicate symbols correctly. But I guess that it save |
| 733 | a *lot* of space if the assembly file defines a lot of |
| 734 | symbols. [loic] */ |
| 735 | |
| 736 | /* The debug entry (def_symbol_in_progress) is merged into the |
| 737 | previous definition. */ |
| 738 | |
| 739 | c_symbol_merge (def_symbol_in_progress, symbolP); |
| 740 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
| 741 | |
| 742 | def_symbol_in_progress = symbolP; |
| 743 | |
| 744 | if (SF_GET_FUNCTION (def_symbol_in_progress) |
| 745 | || SF_GET_TAG (def_symbol_in_progress) |
| 746 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) |
| 747 | { |
| 748 | /* For functions, and tags, and static symbols, the symbol |
| 749 | *must* be where the debug symbol appears. Move the |
| 750 | existing symbol to the current place. */ |
| 751 | /* If it already is at the end of the symbol list, do nothing. */ |
| 752 | if (def_symbol_in_progress != symbol_lastP) |
| 753 | { |
| 754 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
| 755 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); |
| 756 | } |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | if (SF_GET_TAG (def_symbol_in_progress)) |
| 761 | { |
| 762 | symbolS *oldtag; |
| 763 | |
| 764 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
| 765 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
| 766 | tag_insert (S_GET_NAME (def_symbol_in_progress), |
| 767 | def_symbol_in_progress); |
| 768 | } |
| 769 | |
| 770 | if (SF_GET_FUNCTION (def_symbol_in_progress)) |
| 771 | { |
| 772 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); |
| 773 | set_function (def_symbol_in_progress); |
| 774 | SF_SET_PROCESS (def_symbol_in_progress); |
| 775 | |
| 776 | if (symbolP == NULL) |
| 777 | /* That is, if this is the first time we've seen the |
| 778 | function. */ |
| 779 | symbol_table_insert (def_symbol_in_progress); |
| 780 | |
| 781 | } |
| 782 | |
| 783 | def_symbol_in_progress = NULL; |
| 784 | demand_empty_rest_of_line (); |
| 785 | } |
| 786 | |
| 787 | static void |
| 788 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
| 789 | { |
| 790 | int dim_index; |
| 791 | |
| 792 | if (def_symbol_in_progress == NULL) |
| 793 | { |
| 794 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); |
| 795 | demand_empty_rest_of_line (); |
| 796 | return; |
| 797 | } |
| 798 | |
| 799 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 800 | |
| 801 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) |
| 802 | { |
| 803 | SKIP_WHITESPACES (); |
| 804 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, |
| 805 | get_absolute_expression ()); |
| 806 | |
| 807 | switch (*input_line_pointer) |
| 808 | { |
| 809 | case ',': |
| 810 | input_line_pointer++; |
| 811 | break; |
| 812 | |
| 813 | default: |
| 814 | as_warn (_("badly formed .dim directive ignored")); |
| 815 | /* Fall through. */ |
| 816 | case '\n': |
| 817 | case ';': |
| 818 | dim_index = DIMNUM; |
| 819 | break; |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | demand_empty_rest_of_line (); |
| 824 | } |
| 825 | |
| 826 | static void |
| 827 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
| 828 | { |
| 829 | int this_base; |
| 830 | |
| 831 | if (def_symbol_in_progress == NULL) |
| 832 | { |
| 833 | /* Probably stabs-style line? */ |
| 834 | obj_coff_ln (0); |
| 835 | return; |
| 836 | } |
| 837 | |
| 838 | this_base = get_absolute_expression (); |
| 839 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
| 840 | coff_line_base = this_base; |
| 841 | |
| 842 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 843 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
| 844 | |
| 845 | demand_empty_rest_of_line (); |
| 846 | |
| 847 | #ifndef NO_LISTING |
| 848 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
| 849 | { |
| 850 | extern int listing; |
| 851 | |
| 852 | if (listing) |
| 853 | listing_source_line ((unsigned int) this_base); |
| 854 | } |
| 855 | #endif |
| 856 | } |
| 857 | |
| 858 | static void |
| 859 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
| 860 | { |
| 861 | if (def_symbol_in_progress == NULL) |
| 862 | { |
| 863 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); |
| 864 | demand_empty_rest_of_line (); |
| 865 | return; |
| 866 | } |
| 867 | |
| 868 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 869 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); |
| 870 | demand_empty_rest_of_line (); |
| 871 | } |
| 872 | |
| 873 | static void |
| 874 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
| 875 | { |
| 876 | if (def_symbol_in_progress == NULL) |
| 877 | { |
| 878 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); |
| 879 | demand_empty_rest_of_line (); |
| 880 | return; |
| 881 | } |
| 882 | |
| 883 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); |
| 884 | demand_empty_rest_of_line (); |
| 885 | } |
| 886 | |
| 887 | static void |
| 888 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
| 889 | { |
| 890 | char *symbol_name; |
| 891 | char name_end; |
| 892 | |
| 893 | if (def_symbol_in_progress == NULL) |
| 894 | { |
| 895 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); |
| 896 | demand_empty_rest_of_line (); |
| 897 | return; |
| 898 | } |
| 899 | |
| 900 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 901 | symbol_name = input_line_pointer; |
| 902 | name_end = get_symbol_end (); |
| 903 | |
| 904 | #ifdef tc_canonicalize_symbol_name |
| 905 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
| 906 | #endif |
| 907 | |
| 908 | /* Assume that the symbol referred to by .tag is always defined. |
| 909 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
| 910 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
| 911 | tag_find_or_make (symbol_name)); |
| 912 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) |
| 913 | as_warn (_("tag not found for .tag %s"), symbol_name); |
| 914 | |
| 915 | SF_SET_TAGGED (def_symbol_in_progress); |
| 916 | *input_line_pointer = name_end; |
| 917 | |
| 918 | demand_empty_rest_of_line (); |
| 919 | } |
| 920 | |
| 921 | static void |
| 922 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
| 923 | { |
| 924 | if (def_symbol_in_progress == NULL) |
| 925 | { |
| 926 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); |
| 927 | demand_empty_rest_of_line (); |
| 928 | return; |
| 929 | } |
| 930 | |
| 931 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); |
| 932 | |
| 933 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && |
| 934 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) |
| 935 | SF_SET_FUNCTION (def_symbol_in_progress); |
| 936 | |
| 937 | demand_empty_rest_of_line (); |
| 938 | } |
| 939 | |
| 940 | static void |
| 941 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
| 942 | { |
| 943 | if (def_symbol_in_progress == NULL) |
| 944 | { |
| 945 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); |
| 946 | demand_empty_rest_of_line (); |
| 947 | return; |
| 948 | } |
| 949 | |
| 950 | if (is_name_beginner (*input_line_pointer)) |
| 951 | { |
| 952 | char *symbol_name = input_line_pointer; |
| 953 | char name_end = get_symbol_end (); |
| 954 | |
| 955 | #ifdef tc_canonicalize_symbol_name |
| 956 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
| 957 | #endif |
| 958 | if (streq (symbol_name, ".")) |
| 959 | { |
| 960 | /* If the .val is != from the .def (e.g. statics). */ |
| 961 | symbol_set_frag (def_symbol_in_progress, frag_now); |
| 962 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
| 963 | } |
| 964 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
| 965 | { |
| 966 | expressionS exp; |
| 967 | |
| 968 | exp.X_op = O_symbol; |
| 969 | exp.X_add_symbol = symbol_find_or_make (symbol_name); |
| 970 | exp.X_op_symbol = NULL; |
| 971 | exp.X_add_number = 0; |
| 972 | symbol_set_value_expression (def_symbol_in_progress, &exp); |
| 973 | |
| 974 | /* If the segment is undefined when the forward reference is |
| 975 | resolved, then copy the segment id from the forward |
| 976 | symbol. */ |
| 977 | SF_SET_GET_SEGMENT (def_symbol_in_progress); |
| 978 | |
| 979 | /* FIXME: gcc can generate address expressions here in |
| 980 | unusual cases (search for "obscure" in sdbout.c). We |
| 981 | just ignore the offset here, thus generating incorrect |
| 982 | debugging information. We ignore the rest of the line |
| 983 | just below. */ |
| 984 | } |
| 985 | /* Otherwise, it is the name of a non debug symbol and its value |
| 986 | will be calculated later. */ |
| 987 | *input_line_pointer = name_end; |
| 988 | } |
| 989 | else |
| 990 | { |
| 991 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); |
| 992 | } |
| 993 | |
| 994 | demand_empty_rest_of_line (); |
| 995 | } |
| 996 | |
| 997 | #ifdef TE_PE |
| 998 | |
| 999 | /* Return nonzero if name begins with weak alternate symbol prefix. */ |
| 1000 | |
| 1001 | static int |
| 1002 | weak_is_altname (const char * name) |
| 1003 | { |
| 1004 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
| 1005 | } |
| 1006 | |
| 1007 | /* Return the name of the alternate symbol |
| 1008 | name corresponding to a weak symbol's name. */ |
| 1009 | |
| 1010 | static const char * |
| 1011 | weak_name2altname (const char * name) |
| 1012 | { |
| 1013 | char *alt_name; |
| 1014 | |
| 1015 | alt_name = xmalloc (sizeof (weak_altprefix) + strlen (name)); |
| 1016 | strcpy (alt_name, weak_altprefix); |
| 1017 | return strcat (alt_name, name); |
| 1018 | } |
| 1019 | |
| 1020 | /* Return the name of the weak symbol corresponding to an |
| 1021 | alterate symbol. */ |
| 1022 | |
| 1023 | static const char * |
| 1024 | weak_altname2name (const char * name) |
| 1025 | { |
| 1026 | char * weak_name; |
| 1027 | char * dot; |
| 1028 | |
| 1029 | assert (weak_is_altname (name)); |
| 1030 | |
| 1031 | weak_name = xstrdup (name + 6); |
| 1032 | if ((dot = strchr (weak_name, '.'))) |
| 1033 | *dot = 0; |
| 1034 | return weak_name; |
| 1035 | } |
| 1036 | |
| 1037 | /* Make a weak symbol name unique by |
| 1038 | appending the name of an external symbol. */ |
| 1039 | |
| 1040 | static const char * |
| 1041 | weak_uniquify (const char * name) |
| 1042 | { |
| 1043 | char *ret; |
| 1044 | const char * unique = ""; |
| 1045 | |
| 1046 | #ifdef USE_UNIQUE |
| 1047 | if (an_external_name != NULL) |
| 1048 | unique = an_external_name; |
| 1049 | #endif |
| 1050 | assert (weak_is_altname (name)); |
| 1051 | |
| 1052 | if (strchr (name + sizeof (weak_altprefix), '.')) |
| 1053 | return name; |
| 1054 | |
| 1055 | ret = xmalloc (strlen (name) + strlen (unique) + 2); |
| 1056 | strcpy (ret, name); |
| 1057 | strcat (ret, "."); |
| 1058 | strcat (ret, unique); |
| 1059 | return ret; |
| 1060 | } |
| 1061 | |
| 1062 | #endif /* TE_PE */ |
| 1063 | |
| 1064 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
| 1065 | |
| 1066 | static void |
| 1067 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
| 1068 | { |
| 1069 | char *name; |
| 1070 | int c; |
| 1071 | symbolS *symbolP; |
| 1072 | #ifdef TE_PE |
| 1073 | symbolS *alternateP; |
| 1074 | #endif |
| 1075 | |
| 1076 | do |
| 1077 | { |
| 1078 | name = input_line_pointer; |
| 1079 | c = get_symbol_end (); |
| 1080 | if (*name == 0) |
| 1081 | { |
| 1082 | as_warn (_("badly formed .weak directive ignored")); |
| 1083 | ignore_rest_of_line (); |
| 1084 | return; |
| 1085 | } |
| 1086 | c = 0; |
| 1087 | symbolP = symbol_find_or_make (name); |
| 1088 | *input_line_pointer = c; |
| 1089 | SKIP_WHITESPACE (); |
| 1090 | |
| 1091 | #if defined BFD_ASSEMBLER || defined S_SET_WEAK |
| 1092 | S_SET_WEAK (symbolP); |
| 1093 | #endif |
| 1094 | |
| 1095 | #ifdef TE_PE |
| 1096 | /* See _Microsoft Portable Executable and Common Object |
| 1097 | File Format Specification_, section 5.5.3. |
| 1098 | Create a symbol representing the alternate value. |
| 1099 | coff_frob_symbol will set the value of this symbol from |
| 1100 | the value of the weak symbol itself. */ |
| 1101 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); |
| 1102 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
| 1103 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_LIBRARY); |
| 1104 | |
| 1105 | alternateP = symbol_find_or_make (weak_name2altname (name)); |
| 1106 | S_SET_EXTERNAL (alternateP); |
| 1107 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); |
| 1108 | |
| 1109 | SA_SET_SYM_TAGNDX (symbolP, alternateP); |
| 1110 | #endif |
| 1111 | |
| 1112 | if (c == ',') |
| 1113 | { |
| 1114 | input_line_pointer++; |
| 1115 | SKIP_WHITESPACE (); |
| 1116 | if (*input_line_pointer == '\n') |
| 1117 | c = '\n'; |
| 1118 | } |
| 1119 | |
| 1120 | } |
| 1121 | while (c == ','); |
| 1122 | |
| 1123 | demand_empty_rest_of_line (); |
| 1124 | } |
| 1125 | |
| 1126 | void |
| 1127 | coff_obj_read_begin_hook (void) |
| 1128 | { |
| 1129 | /* These had better be the same. Usually 18 bytes. */ |
| 1130 | #ifndef BFD_HEADERS |
| 1131 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
| 1132 | know (SYMESZ == AUXESZ); |
| 1133 | #endif |
| 1134 | tag_init (); |
| 1135 | } |
| 1136 | |
| 1137 | symbolS *coff_last_function; |
| 1138 | #ifndef OBJ_XCOFF |
| 1139 | static symbolS *coff_last_bf; |
| 1140 | #endif |
| 1141 | |
| 1142 | void |
| 1143 | coff_frob_symbol (symbolS *symp, int *punt) |
| 1144 | { |
| 1145 | static symbolS *last_tagP; |
| 1146 | static stack *block_stack; |
| 1147 | static symbolS *set_end; |
| 1148 | symbolS *next_set_end = NULL; |
| 1149 | |
| 1150 | if (symp == &abs_symbol) |
| 1151 | { |
| 1152 | *punt = 1; |
| 1153 | return; |
| 1154 | } |
| 1155 | |
| 1156 | if (current_lineno_sym) |
| 1157 | coff_add_linesym (NULL); |
| 1158 | |
| 1159 | if (!block_stack) |
| 1160 | block_stack = stack_init (512, sizeof (symbolS*)); |
| 1161 | |
| 1162 | #ifdef TE_PE |
| 1163 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
| 1164 | && ! S_IS_WEAK (symp) |
| 1165 | && weak_is_altname (S_GET_NAME (symp))) |
| 1166 | { |
| 1167 | /* This is a weak alternate symbol. All processing of |
| 1168 | PECOFFweak symbols is done here, through the alternate. */ |
| 1169 | symbolS *weakp = symbol_find (weak_altname2name (S_GET_NAME (symp))); |
| 1170 | |
| 1171 | assert (weakp); |
| 1172 | assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); |
| 1173 | |
| 1174 | if (symbol_equated_p (weakp)) |
| 1175 | { |
| 1176 | /* The weak symbol has an alternate specified; symp is unneeded. */ |
| 1177 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); |
| 1178 | SA_SET_SYM_TAGNDX (weakp, |
| 1179 | symbol_get_value_expression (weakp)->X_add_symbol); |
| 1180 | |
| 1181 | S_CLEAR_EXTERNAL (symp); |
| 1182 | *punt = 1; |
| 1183 | return; |
| 1184 | } |
| 1185 | else |
| 1186 | { |
| 1187 | /* The weak symbol has been assigned an alternate value. |
| 1188 | Copy this value to symp, and set symp as weakp's alternate. */ |
| 1189 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) |
| 1190 | { |
| 1191 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); |
| 1192 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); |
| 1193 | } |
| 1194 | |
| 1195 | if (S_IS_DEFINED (weakp)) |
| 1196 | { |
| 1197 | /* This is a defined weak symbol. Copy value information |
| 1198 | from the weak symbol itself to the alternate symbol. */ |
| 1199 | symbol_set_value_expression (symp, |
| 1200 | symbol_get_value_expression (weakp)); |
| 1201 | symbol_set_frag (symp, symbol_get_frag (weakp)); |
| 1202 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); |
| 1203 | } |
| 1204 | else |
| 1205 | { |
| 1206 | /* This is an undefined weak symbol. |
| 1207 | Define the alternate symbol to zero. */ |
| 1208 | S_SET_VALUE (symp, 0); |
| 1209 | S_SET_SEGMENT (symp, absolute_section); |
| 1210 | } |
| 1211 | |
| 1212 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); |
| 1213 | S_SET_STORAGE_CLASS (symp, C_EXT); |
| 1214 | |
| 1215 | S_SET_VALUE (weakp, 0); |
| 1216 | S_SET_SEGMENT (weakp, undefined_section); |
| 1217 | } |
| 1218 | } |
| 1219 | #else /* TE_PE */ |
| 1220 | if (S_IS_WEAK (symp)) |
| 1221 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); |
| 1222 | #endif /* TE_PE */ |
| 1223 | |
| 1224 | if (!S_IS_DEFINED (symp) |
| 1225 | && !S_IS_WEAK (symp) |
| 1226 | && S_GET_STORAGE_CLASS (symp) != C_STAT) |
| 1227 | S_SET_STORAGE_CLASS (symp, C_EXT); |
| 1228 | |
| 1229 | if (!SF_GET_DEBUG (symp)) |
| 1230 | { |
| 1231 | symbolS * real; |
| 1232 | |
| 1233 | if (!SF_GET_LOCAL (symp) |
| 1234 | && !SF_GET_STATICS (symp) |
| 1235 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
| 1236 | && symbol_constant_p (symp) |
| 1237 | && (real = symbol_find (S_GET_NAME (symp))) |
| 1238 | && S_GET_STORAGE_CLASS (real) == C_NULL |
| 1239 | && real != symp) |
| 1240 | { |
| 1241 | c_symbol_merge (symp, real); |
| 1242 | *punt = 1; |
| 1243 | return; |
| 1244 | } |
| 1245 | |
| 1246 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
| 1247 | { |
| 1248 | assert (S_GET_VALUE (symp) == 0); |
| 1249 | S_SET_EXTERNAL (symp); |
| 1250 | } |
| 1251 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) |
| 1252 | { |
| 1253 | if (S_GET_SEGMENT (symp) == text_section |
| 1254 | && symp != seg_info (text_section)->sym) |
| 1255 | S_SET_STORAGE_CLASS (symp, C_LABEL); |
| 1256 | else |
| 1257 | S_SET_STORAGE_CLASS (symp, C_STAT); |
| 1258 | } |
| 1259 | |
| 1260 | if (SF_GET_PROCESS (symp)) |
| 1261 | { |
| 1262 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) |
| 1263 | { |
| 1264 | if (streq (S_GET_NAME (symp), ".bb")) |
| 1265 | stack_push (block_stack, (char *) &symp); |
| 1266 | else |
| 1267 | { |
| 1268 | symbolS *begin; |
| 1269 | |
| 1270 | begin = *(symbolS **) stack_pop (block_stack); |
| 1271 | if (begin == 0) |
| 1272 | as_warn (_("mismatched .eb")); |
| 1273 | else |
| 1274 | next_set_end = begin; |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp)) |
| 1279 | { |
| 1280 | union internal_auxent *auxp; |
| 1281 | |
| 1282 | coff_last_function = symp; |
| 1283 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) |
| 1284 | S_SET_NUMBER_AUXILIARY (symp, 1); |
| 1285 | auxp = SYM_AUXENT (symp); |
| 1286 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
| 1287 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); |
| 1288 | } |
| 1289 | |
| 1290 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN) |
| 1291 | { |
| 1292 | if (coff_last_function == 0) |
| 1293 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
| 1294 | S_GET_NAME (symp)); |
| 1295 | SA_SET_SYM_FSIZE (coff_last_function, |
| 1296 | (long) (S_GET_VALUE (symp) |
| 1297 | - S_GET_VALUE (coff_last_function))); |
| 1298 | next_set_end = coff_last_function; |
| 1299 | coff_last_function = 0; |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | if (S_IS_EXTERNAL (symp)) |
| 1304 | S_SET_STORAGE_CLASS (symp, C_EXT); |
| 1305 | else if (SF_GET_LOCAL (symp)) |
| 1306 | *punt = 1; |
| 1307 | |
| 1308 | if (SF_GET_FUNCTION (symp)) |
| 1309 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
| 1310 | } |
| 1311 | |
| 1312 | /* Double check weak symbols. */ |
| 1313 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) |
| 1314 | as_bad (_("Symbol `%s' can not be both weak and common"), |
| 1315 | S_GET_NAME (symp)); |
| 1316 | |
| 1317 | if (SF_GET_TAG (symp)) |
| 1318 | last_tagP = symp; |
| 1319 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) |
| 1320 | next_set_end = last_tagP; |
| 1321 | |
| 1322 | #ifdef OBJ_XCOFF |
| 1323 | /* This is pretty horrible, but we have to set *punt correctly in |
| 1324 | order to call SA_SET_SYM_ENDNDX correctly. */ |
| 1325 | if (! symbol_used_in_reloc_p (symp) |
| 1326 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
| 1327 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
| 1328 | && ! symbol_get_tc (symp)->output |
| 1329 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
| 1330 | *punt = 1; |
| 1331 | #endif |
| 1332 | |
| 1333 | if (set_end != (symbolS *) NULL |
| 1334 | && ! *punt |
| 1335 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
| 1336 | || (S_IS_DEFINED (symp) |
| 1337 | && ! S_IS_COMMON (symp) |
| 1338 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) |
| 1339 | { |
| 1340 | SA_SET_SYM_ENDNDX (set_end, symp); |
| 1341 | set_end = NULL; |
| 1342 | } |
| 1343 | |
| 1344 | if (next_set_end != NULL) |
| 1345 | { |
| 1346 | if (set_end != NULL) |
| 1347 | as_warn ("Warning: internal error: forgetting to set endndx of %s", |
| 1348 | S_GET_NAME (set_end)); |
| 1349 | set_end = next_set_end; |
| 1350 | } |
| 1351 | |
| 1352 | #ifndef OBJ_XCOFF |
| 1353 | if (! *punt |
| 1354 | && S_GET_STORAGE_CLASS (symp) == C_FCN |
| 1355 | && streq (S_GET_NAME (symp), ".bf")) |
| 1356 | { |
| 1357 | if (coff_last_bf != NULL) |
| 1358 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); |
| 1359 | coff_last_bf = symp; |
| 1360 | } |
| 1361 | #endif |
| 1362 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
| 1363 | { |
| 1364 | int i; |
| 1365 | struct line_no *lptr; |
| 1366 | alent *l; |
| 1367 | |
| 1368 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
| 1369 | for (i = 0; lptr; lptr = lptr->next) |
| 1370 | i++; |
| 1371 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
| 1372 | |
| 1373 | /* We need i entries for line numbers, plus 1 for the first |
| 1374 | entry which BFD will override, plus 1 for the last zero |
| 1375 | entry (a marker for BFD). */ |
| 1376 | l = xmalloc ((i + 2) * sizeof (* l)); |
| 1377 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
| 1378 | l[i + 1].line_number = 0; |
| 1379 | l[i + 1].u.sym = NULL; |
| 1380 | for (; i > 0; i--) |
| 1381 | { |
| 1382 | if (lptr->frag) |
| 1383 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
| 1384 | l[i] = lptr->l; |
| 1385 | lptr = lptr->next; |
| 1386 | } |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | void |
| 1391 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
| 1392 | asection *sec, |
| 1393 | void * x ATTRIBUTE_UNUSED) |
| 1394 | { |
| 1395 | symbolS *secsym; |
| 1396 | segment_info_type *seginfo = seg_info (sec); |
| 1397 | int nlnno, nrelocs = 0; |
| 1398 | |
| 1399 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in |
| 1400 | tc-ppc.c. Do not get confused by it. */ |
| 1401 | if (seginfo == NULL) |
| 1402 | return; |
| 1403 | |
| 1404 | if (streq (sec->name, ".text")) |
| 1405 | nlnno = coff_n_line_nos; |
| 1406 | else |
| 1407 | nlnno = 0; |
| 1408 | { |
| 1409 | /* @@ Hope that none of the fixups expand to more than one reloc |
| 1410 | entry... */ |
| 1411 | fixS *fixp = seginfo->fix_root; |
| 1412 | while (fixp) |
| 1413 | { |
| 1414 | if (! fixp->fx_done) |
| 1415 | nrelocs++; |
| 1416 | fixp = fixp->fx_next; |
| 1417 | } |
| 1418 | } |
| 1419 | if (bfd_get_section_size (sec) == 0 |
| 1420 | && nrelocs == 0 |
| 1421 | && nlnno == 0 |
| 1422 | && sec != text_section |
| 1423 | && sec != data_section |
| 1424 | && sec != bss_section) |
| 1425 | return; |
| 1426 | |
| 1427 | secsym = section_symbol (sec); |
| 1428 | /* This is an estimate; we'll plug in the real value using |
| 1429 | SET_SECTION_RELOCS later */ |
| 1430 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
| 1431 | SA_SET_SCN_NLINNO (secsym, nlnno); |
| 1432 | } |
| 1433 | |
| 1434 | void |
| 1435 | coff_frob_file_after_relocs (void) |
| 1436 | { |
| 1437 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
| 1438 | } |
| 1439 | |
| 1440 | /* Implement the .section pseudo op: |
| 1441 | .section name {, "flags"} |
| 1442 | ^ ^ |
| 1443 | | +--- optional flags: 'b' for bss |
| 1444 | | 'i' for info |
| 1445 | +-- section name 'l' for lib |
| 1446 | 'n' for noload |
| 1447 | 'o' for over |
| 1448 | 'w' for data |
| 1449 | 'd' (apparently m88k for data) |
| 1450 | 'x' for text |
| 1451 | 'r' for read-only data |
| 1452 | 's' for shared data (PE) |
| 1453 | But if the argument is not a quoted string, treat it as a |
| 1454 | subsegment number. |
| 1455 | |
| 1456 | Note the 'a' flag is silently ignored. This allows the same |
| 1457 | .section directive to be parsed in both ELF and COFF formats. */ |
| 1458 | |
| 1459 | void |
| 1460 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
| 1461 | { |
| 1462 | /* Strip out the section name. */ |
| 1463 | char *section_name; |
| 1464 | char c; |
| 1465 | char *name; |
| 1466 | unsigned int exp; |
| 1467 | flagword flags, oldflags; |
| 1468 | asection *sec; |
| 1469 | |
| 1470 | if (flag_mri) |
| 1471 | { |
| 1472 | char type; |
| 1473 | |
| 1474 | s_mri_sect (&type); |
| 1475 | return; |
| 1476 | } |
| 1477 | |
| 1478 | section_name = input_line_pointer; |
| 1479 | c = get_symbol_end (); |
| 1480 | |
| 1481 | name = xmalloc (input_line_pointer - section_name + 1); |
| 1482 | strcpy (name, section_name); |
| 1483 | |
| 1484 | *input_line_pointer = c; |
| 1485 | |
| 1486 | SKIP_WHITESPACE (); |
| 1487 | |
| 1488 | exp = 0; |
| 1489 | flags = SEC_NO_FLAGS; |
| 1490 | |
| 1491 | if (*input_line_pointer == ',') |
| 1492 | { |
| 1493 | ++input_line_pointer; |
| 1494 | SKIP_WHITESPACE (); |
| 1495 | if (*input_line_pointer != '"') |
| 1496 | exp = get_absolute_expression (); |
| 1497 | else |
| 1498 | { |
| 1499 | ++input_line_pointer; |
| 1500 | while (*input_line_pointer != '"' |
| 1501 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) |
| 1502 | { |
| 1503 | switch (*input_line_pointer) |
| 1504 | { |
| 1505 | case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break; |
| 1506 | case 'n': flags &=~ SEC_LOAD; flags |= SEC_NEVER_LOAD; break; |
| 1507 | |
| 1508 | case 's': flags |= SEC_COFF_SHARED; /* Fall through. */ |
| 1509 | case 'd': flags |= SEC_DATA | SEC_LOAD; /* Fall through. */ |
| 1510 | case 'w': flags &=~ SEC_READONLY; break; |
| 1511 | |
| 1512 | case 'a': break; /* For compatibility with ELF. */ |
| 1513 | case 'x': flags |= SEC_CODE | SEC_LOAD; break; |
| 1514 | case 'r': flags |= SEC_DATA | SEC_LOAD | SEC_READONLY; break; |
| 1515 | |
| 1516 | case 'i': /* STYP_INFO */ |
| 1517 | case 'l': /* STYP_LIB */ |
| 1518 | case 'o': /* STYP_OVER */ |
| 1519 | as_warn (_("unsupported section attribute '%c'"), |
| 1520 | *input_line_pointer); |
| 1521 | break; |
| 1522 | |
| 1523 | default: |
| 1524 | as_warn (_("unknown section attribute '%c'"), |
| 1525 | *input_line_pointer); |
| 1526 | break; |
| 1527 | } |
| 1528 | ++input_line_pointer; |
| 1529 | } |
| 1530 | if (*input_line_pointer == '"') |
| 1531 | ++input_line_pointer; |
| 1532 | } |
| 1533 | } |
| 1534 | |
| 1535 | sec = subseg_new (name, (subsegT) exp); |
| 1536 | |
| 1537 | oldflags = bfd_get_section_flags (stdoutput, sec); |
| 1538 | if (oldflags == SEC_NO_FLAGS) |
| 1539 | { |
| 1540 | /* Set section flags for a new section just created by subseg_new. |
| 1541 | Provide a default if no flags were parsed. */ |
| 1542 | if (flags == SEC_NO_FLAGS) |
| 1543 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
| 1544 | |
| 1545 | #ifdef COFF_LONG_SECTION_NAMES |
| 1546 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce |
| 1547 | sections so adjust_reloc_syms in write.c will correctly handle |
| 1548 | relocs which refer to non-local symbols in these sections. */ |
| 1549 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
| 1550 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
| 1551 | #endif |
| 1552 | |
| 1553 | if (! bfd_set_section_flags (stdoutput, sec, flags)) |
| 1554 | as_warn (_("error setting flags for \"%s\": %s"), |
| 1555 | bfd_section_name (stdoutput, sec), |
| 1556 | bfd_errmsg (bfd_get_error ())); |
| 1557 | } |
| 1558 | else if (flags != SEC_NO_FLAGS) |
| 1559 | { |
| 1560 | /* This section's attributes have already been set. Warn if the |
| 1561 | attributes don't match. */ |
| 1562 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
| 1563 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD); |
| 1564 | if ((flags ^ oldflags) & matchflags) |
| 1565 | as_warn (_("Ignoring changed section attributes for %s"), name); |
| 1566 | } |
| 1567 | |
| 1568 | demand_empty_rest_of_line (); |
| 1569 | } |
| 1570 | |
| 1571 | void |
| 1572 | coff_adjust_symtab (void) |
| 1573 | { |
| 1574 | if (symbol_rootP == NULL |
| 1575 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) |
| 1576 | c_dot_file_symbol ("fake", 0); |
| 1577 | } |
| 1578 | |
| 1579 | void |
| 1580 | coff_frob_section (segT sec) |
| 1581 | { |
| 1582 | segT strsec; |
| 1583 | char *p; |
| 1584 | fragS *fragp; |
| 1585 | bfd_vma size, n_entries, mask; |
| 1586 | bfd_vma align_power = (bfd_vma)sec->alignment_power + OCTETS_PER_BYTE_POWER; |
| 1587 | |
| 1588 | /* The COFF back end in BFD requires that all section sizes be |
| 1589 | rounded up to multiples of the corresponding section alignments, |
| 1590 | supposedly because standard COFF has no other way of encoding alignment |
| 1591 | for sections. If your COFF flavor has a different way of encoding |
| 1592 | section alignment, then skip this step, as TICOFF does. */ |
| 1593 | size = bfd_get_section_size (sec); |
| 1594 | mask = ((bfd_vma) 1 << align_power) - 1; |
| 1595 | #if !defined(TICOFF) |
| 1596 | if (size & mask) |
| 1597 | { |
| 1598 | bfd_vma new_size; |
| 1599 | fragS *last; |
| 1600 | |
| 1601 | new_size = (size + mask) & ~mask; |
| 1602 | bfd_set_section_size (stdoutput, sec, new_size); |
| 1603 | |
| 1604 | /* If the size had to be rounded up, add some padding in |
| 1605 | the last non-empty frag. */ |
| 1606 | fragp = seg_info (sec)->frchainP->frch_root; |
| 1607 | last = seg_info (sec)->frchainP->frch_last; |
| 1608 | while (fragp->fr_next != last) |
| 1609 | fragp = fragp->fr_next; |
| 1610 | last->fr_address = size; |
| 1611 | fragp->fr_offset += new_size - size; |
| 1612 | } |
| 1613 | #endif |
| 1614 | |
| 1615 | /* If the section size is non-zero, the section symbol needs an aux |
| 1616 | entry associated with it, indicating the size. We don't know |
| 1617 | all the values yet; coff_frob_symbol will fill them in later. */ |
| 1618 | #ifndef TICOFF |
| 1619 | if (size != 0 |
| 1620 | || sec == text_section |
| 1621 | || sec == data_section |
| 1622 | || sec == bss_section) |
| 1623 | #endif |
| 1624 | { |
| 1625 | symbolS *secsym = section_symbol (sec); |
| 1626 | |
| 1627 | S_SET_STORAGE_CLASS (secsym, C_STAT); |
| 1628 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
| 1629 | SF_SET_STATICS (secsym); |
| 1630 | SA_SET_SCN_SCNLEN (secsym, size); |
| 1631 | } |
| 1632 | |
| 1633 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
| 1634 | #ifndef STAB_SECTION_NAME |
| 1635 | #define STAB_SECTION_NAME ".stab" |
| 1636 | #endif |
| 1637 | #ifndef STAB_STRING_SECTION_NAME |
| 1638 | #define STAB_STRING_SECTION_NAME ".stabstr" |
| 1639 | #endif |
| 1640 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
| 1641 | return; |
| 1642 | |
| 1643 | strsec = sec; |
| 1644 | sec = subseg_get (STAB_SECTION_NAME, 0); |
| 1645 | /* size is already rounded up, since other section will be listed first */ |
| 1646 | size = bfd_get_section_size (strsec); |
| 1647 | |
| 1648 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
| 1649 | |
| 1650 | /* Find first non-empty frag. It should be large enough. */ |
| 1651 | fragp = seg_info (sec)->frchainP->frch_root; |
| 1652 | while (fragp && fragp->fr_fix == 0) |
| 1653 | fragp = fragp->fr_next; |
| 1654 | assert (fragp != 0 && fragp->fr_fix >= 12); |
| 1655 | |
| 1656 | /* Store the values. */ |
| 1657 | p = fragp->fr_literal; |
| 1658 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); |
| 1659 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); |
| 1660 | } |
| 1661 | |
| 1662 | void |
| 1663 | obj_coff_init_stab_section (segT seg) |
| 1664 | { |
| 1665 | char *file; |
| 1666 | char *p; |
| 1667 | char *stabstr_name; |
| 1668 | unsigned int stroff; |
| 1669 | |
| 1670 | /* Make space for this first symbol. */ |
| 1671 | p = frag_more (12); |
| 1672 | /* Zero it out. */ |
| 1673 | memset (p, 0, 12); |
| 1674 | as_where (&file, (unsigned int *) NULL); |
| 1675 | stabstr_name = xmalloc (strlen (seg->name) + 4); |
| 1676 | strcpy (stabstr_name, seg->name); |
| 1677 | strcat (stabstr_name, "str"); |
| 1678 | stroff = get_stab_string_offset (file, stabstr_name); |
| 1679 | know (stroff == 1); |
| 1680 | md_number_to_chars (p, stroff, 4); |
| 1681 | } |
| 1682 | |
| 1683 | #ifdef DEBUG |
| 1684 | const char * |
| 1685 | s_get_name (symbolS *s) |
| 1686 | { |
| 1687 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); |
| 1688 | } |
| 1689 | |
| 1690 | void |
| 1691 | symbol_dump (void) |
| 1692 | { |
| 1693 | symbolS *symbolP; |
| 1694 | |
| 1695 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) |
| 1696 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
| 1697 | (unsigned long) symbolP, |
| 1698 | S_GET_NAME (symbolP), |
| 1699 | (long) S_GET_DATA_TYPE (symbolP), |
| 1700 | S_GET_STORAGE_CLASS (symbolP), |
| 1701 | (int) S_GET_SEGMENT (symbolP)); |
| 1702 | } |
| 1703 | |
| 1704 | #endif /* DEBUG */ |
| 1705 | |
| 1706 | #else /* not BFD_ASSEMBLER */ |
| 1707 | |
| 1708 | #include "frags.h" |
| 1709 | /* This is needed because we include internal bfd things. */ |
| 1710 | #include <time.h> |
| 1711 | |
| 1712 | #include "libbfd.h" |
| 1713 | #include "libcoff.h" |
| 1714 | |
| 1715 | /* The NOP_OPCODE is for the alignment fill value. Fill with nop so |
| 1716 | that we can stick sections together without causing trouble. */ |
| 1717 | #ifndef NOP_OPCODE |
| 1718 | #define NOP_OPCODE 0x00 |
| 1719 | #endif |
| 1720 | |
| 1721 | /* The zeroes if symbol name is longer than 8 chars */ |
| 1722 | #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v)) |
| 1723 | |
| 1724 | #define MIN(a,b) ((a) < (b)? (a) : (b)) |
| 1725 | |
| 1726 | /* This vector is used to turn a gas internal segment number into a |
| 1727 | section number suitable for insertion into a coff symbol table. |
| 1728 | This must correspond to seg_info_off_by_4. */ |
| 1729 | |
| 1730 | const short seg_N_TYPE[] = |
| 1731 | { /* in: segT out: N_TYPE bits */ |
| 1732 | C_ABS_SECTION, |
| 1733 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, |
| 1734 | 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, |
| 1735 | 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, |
| 1736 | 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, |
| 1737 | C_UNDEF_SECTION, /* SEG_UNKNOWN */ |
| 1738 | C_UNDEF_SECTION, /* SEG_GOOF */ |
| 1739 | C_UNDEF_SECTION, /* SEG_EXPR */ |
| 1740 | C_DEBUG_SECTION, /* SEG_DEBUG */ |
| 1741 | C_NTV_SECTION, /* SEG_NTV */ |
| 1742 | C_PTV_SECTION, /* SEG_PTV */ |
| 1743 | C_REGISTER_SECTION, /* SEG_REGISTER */ |
| 1744 | }; |
| 1745 | |
| 1746 | int function_lineoff = -1; /* Offset in line#s where the last function |
| 1747 | started (the odd entry for line #0) */ |
| 1748 | |
| 1749 | /* Structure used to keep the filenames which |
| 1750 | are too long around so that we can stick them |
| 1751 | into the string table. */ |
| 1752 | struct filename_list |
| 1753 | { |
| 1754 | const char *filename; |
| 1755 | struct filename_list *next; |
| 1756 | }; |
| 1757 | |
| 1758 | static struct filename_list *filename_list_head; |
| 1759 | static struct filename_list *filename_list_tail; |
| 1760 | |
| 1761 | static symbolS *last_line_symbol; |
| 1762 | |
| 1763 | /* Add 4 to the real value to get the index and compensate the |
| 1764 | negatives. This vector is used by S_GET_SEGMENT to turn a coff |
| 1765 | section number into a segment number. */ |
| 1766 | |
| 1767 | bfd *abfd; |
| 1768 | static symbolS *previous_file_symbol; |
| 1769 | static int line_base; |
| 1770 | |
| 1771 | /* When not using BFD_ASSEMBLER, we permit up to 40 sections. |
| 1772 | |
| 1773 | This array maps a COFF section number into a gas section number. |
| 1774 | Because COFF uses negative section numbers, you must add 4 to the |
| 1775 | COFF section number when indexing into this array; this is done via |
| 1776 | the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to |
| 1777 | seg_N_TYPE. */ |
| 1778 | |
| 1779 | static const segT seg_info_off_by_4[] = |
| 1780 | { |
| 1781 | SEG_PTV, |
| 1782 | SEG_NTV, |
| 1783 | SEG_DEBUG, |
| 1784 | SEG_ABSOLUTE, |
| 1785 | SEG_UNKNOWN, |
| 1786 | SEG_E0, SEG_E1, SEG_E2, SEG_E3, SEG_E4, |
| 1787 | SEG_E5, SEG_E6, SEG_E7, SEG_E8, SEG_E9, |
| 1788 | SEG_E10, SEG_E11, SEG_E12, SEG_E13, SEG_E14, |
| 1789 | SEG_E15, SEG_E16, SEG_E17, SEG_E18, SEG_E19, |
| 1790 | SEG_E20, SEG_E21, SEG_E22, SEG_E23, SEG_E24, |
| 1791 | SEG_E25, SEG_E26, SEG_E27, SEG_E28, SEG_E29, |
| 1792 | SEG_E30, SEG_E31, SEG_E32, SEG_E33, SEG_E34, |
| 1793 | SEG_E35, SEG_E36, SEG_E37, SEG_E38, SEG_E39, |
| 1794 | (segT) 40, |
| 1795 | (segT) 41, |
| 1796 | (segT) 42, |
| 1797 | (segT) 43, |
| 1798 | (segT) 44, |
| 1799 | (segT) 45, |
| 1800 | (segT) 0, |
| 1801 | (segT) 0, |
| 1802 | (segT) 0, |
| 1803 | SEG_REGISTER |
| 1804 | }; |
| 1805 | |
| 1806 | #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4]) |
| 1807 | |
| 1808 | static relax_addressT |
| 1809 | relax_align (relax_addressT address, long alignment) |
| 1810 | { |
| 1811 | relax_addressT mask; |
| 1812 | relax_addressT new_address; |
| 1813 | |
| 1814 | mask = ~((~0) << alignment); |
| 1815 | new_address = (address + mask) & (~mask); |
| 1816 | |
| 1817 | return new_address - address; |
| 1818 | } |
| 1819 | |
| 1820 | segT |
| 1821 | s_get_segment (symbolS * x) |
| 1822 | { |
| 1823 | return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum); |
| 1824 | } |
| 1825 | |
| 1826 | /* Calculate the size of the frag chain and fill in the section header |
| 1827 | to contain all of it, also fill in the addr of the sections. */ |
| 1828 | |
| 1829 | static unsigned int |
| 1830 | size_section (bfd *abfd ATTRIBUTE_UNUSED, unsigned int idx) |
| 1831 | { |
| 1832 | unsigned int size = 0; |
| 1833 | fragS *frag = segment_info[idx].frchainP->frch_root; |
| 1834 | |
| 1835 | while (frag) |
| 1836 | { |
| 1837 | size = frag->fr_address; |
| 1838 | if (frag->fr_address != size) |
| 1839 | { |
| 1840 | fprintf (stderr, _("Out of step\n")); |
| 1841 | size = frag->fr_address; |
| 1842 | } |
| 1843 | |
| 1844 | switch (frag->fr_type) |
| 1845 | { |
| 1846 | #ifdef TC_COFF_SIZEMACHDEP |
| 1847 | case rs_machine_dependent: |
| 1848 | size += TC_COFF_SIZEMACHDEP (frag); |
| 1849 | break; |
| 1850 | #endif |
| 1851 | case rs_space: |
| 1852 | case rs_fill: |
| 1853 | case rs_org: |
| 1854 | size += frag->fr_fix; |
| 1855 | size += frag->fr_offset * frag->fr_var; |
| 1856 | break; |
| 1857 | case rs_align: |
| 1858 | case rs_align_code: |
| 1859 | case rs_align_test: |
| 1860 | { |
| 1861 | addressT off; |
| 1862 | |
| 1863 | size += frag->fr_fix; |
| 1864 | off = relax_align (size, frag->fr_offset); |
| 1865 | if (frag->fr_subtype != 0 && off > frag->fr_subtype) |
| 1866 | off = 0; |
| 1867 | size += off; |
| 1868 | } |
| 1869 | break; |
| 1870 | default: |
| 1871 | BAD_CASE (frag->fr_type); |
| 1872 | break; |
| 1873 | } |
| 1874 | frag = frag->fr_next; |
| 1875 | } |
| 1876 | segment_info[idx].scnhdr.s_size = size; |
| 1877 | return size; |
| 1878 | } |
| 1879 | |
| 1880 | static unsigned int |
| 1881 | count_entries_in_chain (unsigned int idx) |
| 1882 | { |
| 1883 | unsigned int nrelocs; |
| 1884 | fixS *fixup_ptr; |
| 1885 | |
| 1886 | /* Count the relocations. */ |
| 1887 | fixup_ptr = segment_info[idx].fix_root; |
| 1888 | nrelocs = 0; |
| 1889 | while (fixup_ptr != (fixS *) NULL) |
| 1890 | { |
| 1891 | if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr)) |
| 1892 | { |
| 1893 | #if defined(TC_A29K) || defined(TC_OR32) |
| 1894 | if (fixup_ptr->fx_r_type == RELOC_CONSTH) |
| 1895 | nrelocs += 2; |
| 1896 | else |
| 1897 | nrelocs++; |
| 1898 | #else |
| 1899 | nrelocs++; |
| 1900 | #endif |
| 1901 | } |
| 1902 | |
| 1903 | fixup_ptr = fixup_ptr->fx_next; |
| 1904 | } |
| 1905 | return nrelocs; |
| 1906 | } |
| 1907 | |
| 1908 | #ifdef TE_AUX |
| 1909 | |
| 1910 | /* AUX's ld expects relocations to be sorted. */ |
| 1911 | |
| 1912 | static int |
| 1913 | compare_external_relocs (const void * x, const void * y) |
| 1914 | { |
| 1915 | struct external_reloc *a = (struct external_reloc *) x; |
| 1916 | struct external_reloc *b = (struct external_reloc *) y; |
| 1917 | bfd_vma aadr = bfd_getb32 (a->r_vaddr); |
| 1918 | bfd_vma badr = bfd_getb32 (b->r_vaddr); |
| 1919 | |
| 1920 | return (aadr < badr ? -1 : badr < aadr ? 1 : 0); |
| 1921 | } |
| 1922 | |
| 1923 | #endif |
| 1924 | |
| 1925 | /* Output all the relocations for a section. */ |
| 1926 | |
| 1927 | static void |
| 1928 | do_relocs_for (bfd * abfd, object_headers * h, unsigned long *file_cursor) |
| 1929 | { |
| 1930 | unsigned int nrelocs; |
| 1931 | unsigned int idx; |
| 1932 | unsigned long reloc_start = *file_cursor; |
| 1933 | |
| 1934 | for (idx = SEG_E0; idx < SEG_LAST; idx++) |
| 1935 | { |
| 1936 | if (segment_info[idx].scnhdr.s_name[0]) |
| 1937 | { |
| 1938 | struct external_reloc *ext_ptr; |
| 1939 | struct external_reloc *external_reloc_vec; |
| 1940 | unsigned int external_reloc_size; |
| 1941 | unsigned int base = segment_info[idx].scnhdr.s_paddr; |
| 1942 | fixS *fix_ptr = segment_info[idx].fix_root; |
| 1943 | |
| 1944 | nrelocs = count_entries_in_chain (idx); |
| 1945 | |
| 1946 | if (nrelocs) |
| 1947 | /* Bypass this stuff if no relocs. This also incidentally |
| 1948 | avoids a SCO bug, where free(malloc(0)) tends to crash. */ |
| 1949 | { |
| 1950 | external_reloc_size = nrelocs * RELSZ; |
| 1951 | external_reloc_vec = malloc (external_reloc_size); |
| 1952 | |
| 1953 | ext_ptr = external_reloc_vec; |
| 1954 | |
| 1955 | /* Fill in the internal coff style reloc struct from the |
| 1956 | internal fix list. */ |
| 1957 | while (fix_ptr) |
| 1958 | { |
| 1959 | struct internal_reloc intr; |
| 1960 | |
| 1961 | /* Only output some of the relocations. */ |
| 1962 | if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr)) |
| 1963 | { |
| 1964 | #ifdef TC_RELOC_MANGLE |
| 1965 | TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr, |
| 1966 | base); |
| 1967 | #else |
| 1968 | symbolS *dot; |
| 1969 | symbolS *symbol_ptr = fix_ptr->fx_addsy; |
| 1970 | |
| 1971 | intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr); |
| 1972 | intr.r_vaddr = |
| 1973 | base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where; |
| 1974 | |
| 1975 | #ifdef TC_KEEP_FX_OFFSET |
| 1976 | intr.r_offset = fix_ptr->fx_offset; |
| 1977 | #else |
| 1978 | intr.r_offset = 0; |
| 1979 | #endif |
| 1980 | |
| 1981 | while (symbol_ptr->sy_value.X_op == O_symbol |
| 1982 | && (! S_IS_DEFINED (symbol_ptr) |
| 1983 | || S_IS_COMMON (symbol_ptr))) |
| 1984 | { |
| 1985 | symbolS *n; |
| 1986 | |
| 1987 | /* We must avoid looping, as that can occur |
| 1988 | with a badly written program. */ |
| 1989 | n = symbol_ptr->sy_value.X_add_symbol; |
| 1990 | if (n == symbol_ptr) |
| 1991 | break; |
| 1992 | symbol_ptr = n; |
| 1993 | } |
| 1994 | |
| 1995 | /* Turn the segment of the symbol into an offset. */ |
| 1996 | if (symbol_ptr) |
| 1997 | { |
| 1998 | resolve_symbol_value (symbol_ptr); |
| 1999 | if (! symbol_ptr->sy_resolved) |
| 2000 | { |
| 2001 | char *file; |
| 2002 | unsigned int line; |
| 2003 | |
| 2004 | if (expr_symbol_where (symbol_ptr, &file, &line)) |
| 2005 | as_bad_where (file, line, |
| 2006 | _("unresolved relocation")); |
| 2007 | else |
| 2008 | as_bad (_("bad relocation: symbol `%s' not in symbol table"), |
| 2009 | S_GET_NAME (symbol_ptr)); |
| 2010 | } |
| 2011 | |
| 2012 | dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot; |
| 2013 | if (dot) |
| 2014 | intr.r_symndx = dot->sy_number; |
| 2015 | else |
| 2016 | intr.r_symndx = symbol_ptr->sy_number; |
| 2017 | } |
| 2018 | else |
| 2019 | intr.r_symndx = -1; |
| 2020 | #endif |
| 2021 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); |
| 2022 | ext_ptr++; |
| 2023 | #if defined(TC_A29K) |
| 2024 | /* The 29k has a special kludge for the high 16 bit |
| 2025 | reloc. Two relocations are emitted, R_IHIHALF, |
| 2026 | and R_IHCONST. The second one doesn't contain a |
| 2027 | symbol, but uses the value for offset. */ |
| 2028 | if (intr.r_type == R_IHIHALF) |
| 2029 | { |
| 2030 | /* Now emit the second bit. */ |
| 2031 | intr.r_type = R_IHCONST; |
| 2032 | intr.r_symndx = fix_ptr->fx_addnumber; |
| 2033 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); |
| 2034 | ext_ptr++; |
| 2035 | } |
| 2036 | #endif |
| 2037 | #if defined(TC_OR32) |
| 2038 | /* The or32 has a special kludge for the high 16 bit |
| 2039 | reloc. Two relocations are emitted, R_IHIHALF, |
| 2040 | and R_IHCONST. The second one doesn't contain a |
| 2041 | symbol, but uses the value for offset. */ |
| 2042 | if (intr.r_type == R_IHIHALF) |
| 2043 | { |
| 2044 | /* Now emit the second bit. */ |
| 2045 | intr.r_type = R_IHCONST; |
| 2046 | intr.r_symndx = fix_ptr->fx_addnumber; |
| 2047 | (void) bfd_coff_swap_reloc_out (abfd, & intr, ext_ptr); |
| 2048 | ext_ptr ++; |
| 2049 | } |
| 2050 | #endif |
| 2051 | } |
| 2052 | |
| 2053 | fix_ptr = fix_ptr->fx_next; |
| 2054 | } |
| 2055 | #ifdef TE_AUX |
| 2056 | /* Sort the reloc table. */ |
| 2057 | qsort ((void *) external_reloc_vec, nrelocs, |
| 2058 | sizeof (struct external_reloc), compare_external_relocs); |
| 2059 | #endif |
| 2060 | /* Write out the reloc table. */ |
| 2061 | bfd_bwrite ((void *) external_reloc_vec, |
| 2062 | (bfd_size_type) external_reloc_size, abfd); |
| 2063 | free (external_reloc_vec); |
| 2064 | |
| 2065 | /* Fill in section header info. */ |
| 2066 | segment_info[idx].scnhdr.s_relptr = *file_cursor; |
| 2067 | *file_cursor += external_reloc_size; |
| 2068 | segment_info[idx].scnhdr.s_nreloc = nrelocs; |
| 2069 | } |
| 2070 | else |
| 2071 | { |
| 2072 | /* No relocs. */ |
| 2073 | segment_info[idx].scnhdr.s_relptr = 0; |
| 2074 | } |
| 2075 | } |
| 2076 | } |
| 2077 | |
| 2078 | /* Set relocation_size field in file headers. */ |
| 2079 | H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0); |
| 2080 | } |
| 2081 | |
| 2082 | /* Run through a frag chain and write out the data to go with it, fill |
| 2083 | in the scnhdrs with the info on the file positions. */ |
| 2084 | |
| 2085 | static void |
| 2086 | fill_section (bfd * abfd, |
| 2087 | object_headers *h ATTRIBUTE_UNUSED, |
| 2088 | unsigned long *file_cursor) |
| 2089 | { |
| 2090 | unsigned int i; |
| 2091 | unsigned int paddr = 0; |
| 2092 | |
| 2093 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 2094 | { |
| 2095 | unsigned int offset = 0; |
| 2096 | struct internal_scnhdr *s = &(segment_info[i].scnhdr); |
| 2097 | |
| 2098 | PROGRESS (1); |
| 2099 | |
| 2100 | if (s->s_name[0]) |
| 2101 | { |
| 2102 | fragS *frag = segment_info[i].frchainP->frch_root; |
| 2103 | char *buffer = NULL; |
| 2104 | |
| 2105 | if (s->s_size == 0) |
| 2106 | s->s_scnptr = 0; |
| 2107 | else |
| 2108 | { |
| 2109 | buffer = xmalloc (s->s_size); |
| 2110 | s->s_scnptr = *file_cursor; |
| 2111 | } |
| 2112 | know (s->s_paddr == paddr); |
| 2113 | |
| 2114 | if (streq (s->s_name, ".text")) |
| 2115 | s->s_flags |= STYP_TEXT; |
| 2116 | else if (streq (s->s_name, ".data")) |
| 2117 | s->s_flags |= STYP_DATA; |
| 2118 | else if (streq (s->s_name, ".bss")) |
| 2119 | { |
| 2120 | s->s_scnptr = 0; |
| 2121 | s->s_flags |= STYP_BSS; |
| 2122 | |
| 2123 | /* @@ Should make the i386 and a29k coff targets define |
| 2124 | COFF_NOLOAD_PROBLEM, and have only one test here. */ |
| 2125 | #ifndef TC_I386 |
| 2126 | #ifndef TC_A29K |
| 2127 | #ifndef TC_OR32 |
| 2128 | #ifndef COFF_NOLOAD_PROBLEM |
| 2129 | /* Apparently the SVR3 linker (and exec syscall) and UDI |
| 2130 | mondfe progrem are confused by noload sections. */ |
| 2131 | s->s_flags |= STYP_NOLOAD; |
| 2132 | #endif |
| 2133 | #endif |
| 2134 | #endif |
| 2135 | #endif |
| 2136 | } |
| 2137 | else if (streq (s->s_name, ".lit")) |
| 2138 | s->s_flags = STYP_LIT | STYP_TEXT; |
| 2139 | else if (streq (s->s_name, ".init")) |
| 2140 | s->s_flags |= STYP_TEXT; |
| 2141 | else if (streq (s->s_name, ".fini")) |
| 2142 | s->s_flags |= STYP_TEXT; |
| 2143 | else if (strneq (s->s_name, ".comment", 8)) |
| 2144 | s->s_flags |= STYP_INFO; |
| 2145 | |
| 2146 | while (frag) |
| 2147 | { |
| 2148 | unsigned int fill_size; |
| 2149 | |
| 2150 | switch (frag->fr_type) |
| 2151 | { |
| 2152 | case rs_machine_dependent: |
| 2153 | if (frag->fr_fix) |
| 2154 | { |
| 2155 | memcpy (buffer + frag->fr_address, |
| 2156 | frag->fr_literal, |
| 2157 | (unsigned int) frag->fr_fix); |
| 2158 | offset += frag->fr_fix; |
| 2159 | } |
| 2160 | |
| 2161 | break; |
| 2162 | case rs_space: |
| 2163 | case rs_fill: |
| 2164 | case rs_align: |
| 2165 | case rs_align_code: |
| 2166 | case rs_align_test: |
| 2167 | case rs_org: |
| 2168 | if (frag->fr_fix) |
| 2169 | { |
| 2170 | memcpy (buffer + frag->fr_address, |
| 2171 | frag->fr_literal, |
| 2172 | (unsigned int) frag->fr_fix); |
| 2173 | offset += frag->fr_fix; |
| 2174 | } |
| 2175 | |
| 2176 | fill_size = frag->fr_var; |
| 2177 | if (fill_size && frag->fr_offset > 0) |
| 2178 | { |
| 2179 | unsigned int count; |
| 2180 | unsigned int off = frag->fr_fix; |
| 2181 | |
| 2182 | for (count = frag->fr_offset; count; count--) |
| 2183 | { |
| 2184 | if (fill_size + frag->fr_address + off <= s->s_size) |
| 2185 | { |
| 2186 | memcpy (buffer + frag->fr_address + off, |
| 2187 | frag->fr_literal + frag->fr_fix, |
| 2188 | fill_size); |
| 2189 | off += fill_size; |
| 2190 | offset += fill_size; |
| 2191 | } |
| 2192 | } |
| 2193 | } |
| 2194 | break; |
| 2195 | case rs_broken_word: |
| 2196 | break; |
| 2197 | default: |
| 2198 | abort (); |
| 2199 | } |
| 2200 | frag = frag->fr_next; |
| 2201 | } |
| 2202 | |
| 2203 | if (s->s_size != 0) |
| 2204 | { |
| 2205 | if (s->s_scnptr != 0) |
| 2206 | { |
| 2207 | bfd_bwrite (buffer, s->s_size, abfd); |
| 2208 | *file_cursor += s->s_size; |
| 2209 | } |
| 2210 | free (buffer); |
| 2211 | } |
| 2212 | paddr += s->s_size; |
| 2213 | } |
| 2214 | } |
| 2215 | } |
| 2216 | |
| 2217 | /* Coff file generation & utilities. */ |
| 2218 | |
| 2219 | static void |
| 2220 | coff_header_append (bfd * abfd, object_headers * h) |
| 2221 | { |
| 2222 | unsigned int i; |
| 2223 | char buffer[1000]; |
| 2224 | char buffero[1000]; |
| 2225 | #ifdef COFF_LONG_SECTION_NAMES |
| 2226 | unsigned long string_size = 4; |
| 2227 | #endif |
| 2228 | |
| 2229 | bfd_seek (abfd, 0, 0); |
| 2230 | |
| 2231 | #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER |
| 2232 | H_SET_MAGIC_NUMBER (h, COFF_MAGIC); |
| 2233 | H_SET_VERSION_STAMP (h, 0); |
| 2234 | H_SET_ENTRY_POINT (h, 0); |
| 2235 | H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address); |
| 2236 | H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address); |
| 2237 | H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out (abfd, &h->aouthdr, |
| 2238 | buffero)); |
| 2239 | #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ |
| 2240 | H_SET_SIZEOF_OPTIONAL_HEADER (h, 0); |
| 2241 | #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ |
| 2242 | |
| 2243 | i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer); |
| 2244 | |
| 2245 | bfd_bwrite (buffer, (bfd_size_type) i, abfd); |
| 2246 | bfd_bwrite (buffero, (bfd_size_type) H_GET_SIZEOF_OPTIONAL_HEADER (h), abfd); |
| 2247 | |
| 2248 | for (i = SEG_E0; i < SEG_LAST; i++) |
| 2249 | { |
| 2250 | if (segment_info[i].scnhdr.s_name[0]) |
| 2251 | { |
| 2252 | unsigned int size; |
| 2253 | |
| 2254 | #ifdef COFF_LONG_SECTION_NAMES |
| 2255 | /* Support long section names as found in PE. This code |
| 2256 | must coordinate with that in write_object_file and |
| 2257 | w_strings. */ |
| 2258 | if (strlen (segment_info[i].name) > SCNNMLEN) |
| 2259 | { |
| 2260 | memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN); |
| 2261 | sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size); |
| 2262 | string_size += strlen (segment_info[i].name) + 1; |
| 2263 | } |
| 2264 | #endif |
| 2265 | size = bfd_coff_swap_scnhdr_out (abfd, |
| 2266 | &(segment_info[i].scnhdr), |
| 2267 | buffer); |
| 2268 | if (size == 0) |
| 2269 | as_bad (_("bfd_coff_swap_scnhdr_out failed")); |
| 2270 | bfd_bwrite (buffer, (bfd_size_type) size, abfd); |
| 2271 | } |
| 2272 | } |
| 2273 | } |
| 2274 | |
| 2275 | static char * |
| 2276 | symbol_to_chars (bfd * abfd, char * where, symbolS * symbolP) |
| 2277 | { |
| 2278 | unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux; |
| 2279 | unsigned int i; |
| 2280 | valueT val; |
| 2281 | |
| 2282 | /* Turn any symbols with register attributes into abs symbols. */ |
| 2283 | if (S_GET_SEGMENT (symbolP) == reg_section) |
| 2284 | S_SET_SEGMENT (symbolP, absolute_section); |
| 2285 | |
| 2286 | /* At the same time, relocate all symbols to their output value. */ |
| 2287 | #ifndef TE_PE |
| 2288 | val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr |
| 2289 | + S_GET_VALUE (symbolP)); |
| 2290 | #else |
| 2291 | val = S_GET_VALUE (symbolP); |
| 2292 | #endif |
| 2293 | |
| 2294 | S_SET_VALUE (symbolP, val); |
| 2295 | |
| 2296 | symbolP->sy_symbol.ost_entry.n_value = val; |
| 2297 | |
| 2298 | where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry, |
| 2299 | where); |
| 2300 | |
| 2301 | for (i = 0; i < numaux; i++) |
| 2302 | { |
| 2303 | where += bfd_coff_swap_aux_out (abfd, |
| 2304 | &symbolP->sy_symbol.ost_auxent[i], |
| 2305 | S_GET_DATA_TYPE (symbolP), |
| 2306 | S_GET_STORAGE_CLASS (symbolP), |
| 2307 | i, numaux, where); |
| 2308 | } |
| 2309 | |
| 2310 | return where; |
| 2311 | } |
| 2312 | |
| 2313 | void |
| 2314 | coff_obj_symbol_new_hook (symbolS *symbolP) |
| 2315 | { |
| 2316 | char underscore = 0; /* Symbol has leading _ */ |
| 2317 | |
| 2318 | /* Effective symbol. */ |
| 2319 | /* Store the pointer in the offset. */ |
| 2320 | S_SET_ZEROES (symbolP, 0L); |
| 2321 | S_SET_DATA_TYPE (symbolP, T_NULL); |
| 2322 | S_SET_STORAGE_CLASS (symbolP, 0); |
| 2323 | S_SET_NUMBER_AUXILIARY (symbolP, 0); |
| 2324 | /* Additional information. */ |
| 2325 | symbolP->sy_symbol.ost_flags = 0; |
| 2326 | /* Auxiliary entries. */ |
| 2327 | memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ); |
| 2328 | |
| 2329 | if (S_IS_STRING (symbolP)) |
| 2330 | SF_SET_STRING (symbolP); |
| 2331 | if (!underscore && S_IS_LOCAL (symbolP)) |
| 2332 | SF_SET_LOCAL (symbolP); |
| 2333 | } |
| 2334 | |
| 2335 | static int |
| 2336 | c_line_new (symbolS * symbol, long paddr, int line_number, fragS * frag) |
| 2337 | { |
| 2338 | struct lineno_list *new_line = xmalloc (sizeof (* new_line)); |
| 2339 | |
| 2340 | segment_info_type *s = segment_info + now_seg; |
| 2341 | new_line->line.l_lnno = line_number; |
| 2342 | |
| 2343 | if (line_number == 0) |
| 2344 | { |
| 2345 | last_line_symbol = symbol; |
| 2346 | new_line->line.l_addr.l_symndx = (long) symbol; |
| 2347 | } |
| 2348 | else |
| 2349 | { |
| 2350 | new_line->line.l_addr.l_paddr = paddr; |
| 2351 | } |
| 2352 | |
| 2353 | new_line->frag = (char *) frag; |
| 2354 | new_line->next = NULL; |
| 2355 | |
| 2356 | if (s->lineno_list_head == NULL) |
| 2357 | s->lineno_list_head = new_line; |
| 2358 | else |
| 2359 | s->lineno_list_tail->next = new_line; |
| 2360 | |
| 2361 | s->lineno_list_tail = new_line; |
| 2362 | return LINESZ * s->scnhdr.s_nlnno++; |
| 2363 | } |
| 2364 | |
| 2365 | /* Handle .ln directives. */ |
| 2366 | |
| 2367 | static void |
| 2368 | obj_coff_ln (int appline) |
| 2369 | { |
| 2370 | int l; |
| 2371 | |
| 2372 | if (! appline && def_symbol_in_progress != NULL) |
| 2373 | { |
| 2374 | /* Wrong context. */ |
| 2375 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); |
| 2376 | demand_empty_rest_of_line (); |
| 2377 | return; |
| 2378 | } |
| 2379 | |
| 2380 | l = get_absolute_expression (); |
| 2381 | c_line_new (0, frag_now_fix (), l, frag_now); |
| 2382 | |
| 2383 | if (appline) |
| 2384 | new_logical_line ((char *) NULL, l - 1); |
| 2385 | |
| 2386 | #ifndef NO_LISTING |
| 2387 | { |
| 2388 | extern int listing; |
| 2389 | |
| 2390 | if (listing) |
| 2391 | { |
| 2392 | if (! appline) |
| 2393 | l += line_base - 1; |
| 2394 | listing_source_line ((unsigned int) l); |
| 2395 | } |
| 2396 | } |
| 2397 | #endif |
| 2398 | demand_empty_rest_of_line (); |
| 2399 | } |
| 2400 | |
| 2401 | /* Handle .def directives. |
| 2402 | |
| 2403 | One might ask : why can't we symbol_new if the symbol does not |
| 2404 | already exist and fill it with debug information. Because of |
| 2405 | the C_EFCN special symbol. It would clobber the value of the |
| 2406 | function symbol before we have a chance to notice that it is |
| 2407 | a C_EFCN. And a second reason is that the code is more clear this |
| 2408 | way. (at least I think it is :-). */ |
| 2409 | |
| 2410 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') |
| 2411 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ |
| 2412 | *input_line_pointer == '\t') \ |
| 2413 | input_line_pointer++; |
| 2414 | |
| 2415 | static void |
| 2416 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
| 2417 | { |
| 2418 | char name_end; /* Char after the end of name. */ |
| 2419 | char *symbol_name; /* Name of the debug symbol. */ |
| 2420 | char *symbol_name_copy; /* Temporary copy of the name. */ |
| 2421 | unsigned int symbol_name_length; |
| 2422 | |
| 2423 | if (def_symbol_in_progress != NULL) |
| 2424 | { |
| 2425 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); |
| 2426 | demand_empty_rest_of_line (); |
| 2427 | return; |
| 2428 | } |
| 2429 | |
| 2430 | SKIP_WHITESPACES (); |
| 2431 | |
| 2432 | def_symbol_in_progress = obstack_alloc (¬es, sizeof (*def_symbol_in_progress)); |
| 2433 | memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress)); |
| 2434 | |
| 2435 | symbol_name = input_line_pointer; |
| 2436 | name_end = get_symbol_end (); |
| 2437 | symbol_name_length = strlen (symbol_name); |
| 2438 | symbol_name_copy = xmalloc (symbol_name_length + 1); |
| 2439 | strcpy (symbol_name_copy, symbol_name); |
| 2440 | #ifdef tc_canonicalize_symbol_name |
| 2441 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); |
| 2442 | #endif |
| 2443 | |
| 2444 | /* Initialize the new symbol. */ |
| 2445 | S_SET_NAME (def_symbol_in_progress, symbol_name_copy); |
| 2446 | /* free(symbol_name_copy); */ |
| 2447 | def_symbol_in_progress->sy_name_offset = (unsigned long) ~0; |
| 2448 | def_symbol_in_progress->sy_number = ~0; |
| 2449 | def_symbol_in_progress->sy_frag = &zero_address_frag; |
| 2450 | S_SET_VALUE (def_symbol_in_progress, 0); |
| 2451 | |
| 2452 | if (S_IS_STRING (def_symbol_in_progress)) |
| 2453 | SF_SET_STRING (def_symbol_in_progress); |
| 2454 | |
| 2455 | *input_line_pointer = name_end; |
| 2456 | |
| 2457 | demand_empty_rest_of_line (); |
| 2458 | } |
| 2459 | |
| 2460 | static void |
| 2461 | c_symbol_merge (symbolS *debug, symbolS *normal) |
| 2462 | { |
| 2463 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); |
| 2464 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); |
| 2465 | |
| 2466 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) |
| 2467 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); |
| 2468 | |
| 2469 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) |
| 2470 | memcpy ((char *) &normal->sy_symbol.ost_auxent[0], |
| 2471 | (char *) &debug->sy_symbol.ost_auxent[0], |
| 2472 | (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ)); |
| 2473 | |
| 2474 | /* Move the debug flags. */ |
| 2475 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
| 2476 | } |
| 2477 | |
| 2478 | static unsigned int dim_index; |
| 2479 | |
| 2480 | static void |
| 2481 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
| 2482 | { |
| 2483 | symbolS *symbolP = 0; |
| 2484 | |
| 2485 | dim_index = 0; |
| 2486 | if (def_symbol_in_progress == NULL) |
| 2487 | { |
| 2488 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); |
| 2489 | demand_empty_rest_of_line (); |
| 2490 | return; |
| 2491 | } |
| 2492 | |
| 2493 | /* Set the section number according to storage class. */ |
| 2494 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
| 2495 | { |
| 2496 | case C_STRTAG: |
| 2497 | case C_ENTAG: |
| 2498 | case C_UNTAG: |
| 2499 | SF_SET_TAG (def_symbol_in_progress); |
| 2500 | /* Fall through. */ |
| 2501 | |
| 2502 | case C_FILE: |
| 2503 | case C_TPDEF: |
| 2504 | SF_SET_DEBUG (def_symbol_in_progress); |
| 2505 | S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG); |
| 2506 | break; |
| 2507 | |
| 2508 | case C_EFCN: |
| 2509 | /* Do not emit this symbol. */ |
| 2510 | SF_SET_LOCAL (def_symbol_in_progress); |
| 2511 | /* Fall through. */ |
| 2512 | |
| 2513 | case C_BLOCK: |
| 2514 | /* Will need processing before writing. */ |
| 2515 | SF_SET_PROCESS (def_symbol_in_progress); |
| 2516 | /* Fall through. */ |
| 2517 | |
| 2518 | case C_FCN: |
| 2519 | S_SET_SEGMENT (def_symbol_in_progress, SEG_E0); |
| 2520 | |
| 2521 | if (streq (S_GET_NAME (def_symbol_in_progress), ".bf")) |
| 2522 | { |
| 2523 | if (function_lineoff < 0) |
| 2524 | fprintf (stderr, _("`.bf' symbol without preceding function\n")); |
| 2525 | |
| 2526 | SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff; |
| 2527 | |
| 2528 | SF_SET_PROCESS (last_line_symbol); |
| 2529 | SF_SET_ADJ_LNNOPTR (last_line_symbol); |
| 2530 | SF_SET_PROCESS (def_symbol_in_progress); |
| 2531 | function_lineoff = -1; |
| 2532 | } |
| 2533 | |
| 2534 | /* Value is always set to . */ |
| 2535 | def_symbol_in_progress->sy_frag = frag_now; |
| 2536 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
| 2537 | break; |
| 2538 | |
| 2539 | #ifdef C_AUTOARG |
| 2540 | case C_AUTOARG: |
| 2541 | #endif /* C_AUTOARG */ |
| 2542 | case C_AUTO: |
| 2543 | case C_REG: |
| 2544 | case C_MOS: |
| 2545 | case C_MOE: |
| 2546 | case C_MOU: |
| 2547 | case C_ARG: |
| 2548 | case C_REGPARM: |
| 2549 | case C_FIELD: |
| 2550 | case C_EOS: |
| 2551 | SF_SET_DEBUG (def_symbol_in_progress); |
| 2552 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
| 2553 | break; |
| 2554 | |
| 2555 | case C_EXT: |
| 2556 | case C_WEAKEXT: |
| 2557 | #ifdef TE_PE |
| 2558 | case C_NT_WEAK: |
| 2559 | #endif |
| 2560 | case C_STAT: |
| 2561 | case C_LABEL: |
| 2562 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
| 2563 | break; |
| 2564 | |
| 2565 | case C_USTATIC: |
| 2566 | case C_EXTDEF: |
| 2567 | case C_ULABEL: |
| 2568 | as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress)); |
| 2569 | break; |
| 2570 | } |
| 2571 | |
| 2572 | /* Now that we have built a debug symbol, try to find if we should |
| 2573 | merge with an existing symbol or not. If a symbol is C_EFCN or |
| 2574 | absolute_section or untagged SEG_DEBUG it never merges. We also |
| 2575 | don't merge labels, which are in a different namespace, nor |
| 2576 | symbols which have not yet been defined since they are typically |
| 2577 | unique, nor do we merge tags with non-tags. */ |
| 2578 | |
| 2579 | /* Two cases for functions. Either debug followed by definition or |
| 2580 | definition followed by debug. For definition first, we will |
| 2581 | merge the debug symbol into the definition. For debug first, the |
| 2582 | lineno entry MUST point to the definition function or else it |
| 2583 | will point off into space when crawl_symbols() merges the debug |
| 2584 | symbol into the real symbol. Therefor, let's presume the debug |
| 2585 | symbol is a real function reference. */ |
| 2586 | |
| 2587 | /* FIXME-SOON If for some reason the definition label/symbol is |
| 2588 | never seen, this will probably leave an undefined symbol at link |
| 2589 | time. */ |
| 2590 | |
| 2591 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN |
| 2592 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
| 2593 | || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG |
| 2594 | && !SF_GET_TAG (def_symbol_in_progress)) |
| 2595 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section |
| 2596 | || def_symbol_in_progress->sy_value.X_op != O_constant |
| 2597 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
| 2598 | || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP))) |
| 2599 | { |
| 2600 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, |
| 2601 | &symbol_lastP); |
| 2602 | } |
| 2603 | else |
| 2604 | { |
| 2605 | /* This symbol already exists, merge the newly created symbol |
| 2606 | into the old one. This is not mandatory. The linker can |
| 2607 | handle duplicate symbols correctly. But I guess that it save |
| 2608 | a *lot* of space if the assembly file defines a lot of |
| 2609 | symbols. [loic] */ |
| 2610 | |
| 2611 | /* The debug entry (def_symbol_in_progress) is merged into the |
| 2612 | previous definition. */ |
| 2613 | |
| 2614 | c_symbol_merge (def_symbol_in_progress, symbolP); |
| 2615 | /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */ |
| 2616 | def_symbol_in_progress = symbolP; |
| 2617 | |
| 2618 | if (SF_GET_FUNCTION (def_symbol_in_progress) |
| 2619 | || SF_GET_TAG (def_symbol_in_progress) |
| 2620 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) |
| 2621 | { |
| 2622 | /* For functions, and tags, and static symbols, the symbol |
| 2623 | *must* be where the debug symbol appears. Move the |
| 2624 | existing symbol to the current place. */ |
| 2625 | /* If it already is at the end of the symbol list, do nothing. */ |
| 2626 | if (def_symbol_in_progress != symbol_lastP) |
| 2627 | { |
| 2628 | symbol_remove (def_symbol_in_progress, &symbol_rootP, |
| 2629 | &symbol_lastP); |
| 2630 | symbol_append (def_symbol_in_progress, symbol_lastP, |
| 2631 | &symbol_rootP, &symbol_lastP); |
| 2632 | } |
| 2633 | } |
| 2634 | } |
| 2635 | |
| 2636 | if (SF_GET_TAG (def_symbol_in_progress)) |
| 2637 | { |
| 2638 | symbolS *oldtag; |
| 2639 | |
| 2640 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
| 2641 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
| 2642 | tag_insert (S_GET_NAME (def_symbol_in_progress), |
| 2643 | def_symbol_in_progress); |
| 2644 | } |
| 2645 | |
| 2646 | if (SF_GET_FUNCTION (def_symbol_in_progress)) |
| 2647 | { |
| 2648 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); |
| 2649 | function_lineoff |
| 2650 | = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag); |
| 2651 | |
| 2652 | SF_SET_PROCESS (def_symbol_in_progress); |
| 2653 | |
| 2654 | if (symbolP == NULL) |
| 2655 | /* That is, if this is the first time we've seen the function. */ |
| 2656 | symbol_table_insert (def_symbol_in_progress); |
| 2657 | } |
| 2658 | |
| 2659 | def_symbol_in_progress = NULL; |
| 2660 | demand_empty_rest_of_line (); |
| 2661 | } |
| 2662 | |
| 2663 | static void |
| 2664 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
| 2665 | { |
| 2666 | int dim_index; |
| 2667 | |
| 2668 | if (def_symbol_in_progress == NULL) |
| 2669 | { |
| 2670 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); |
| 2671 | demand_empty_rest_of_line (); |
| 2672 | return; |
| 2673 | } |
| 2674 | |
| 2675 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 2676 | |
| 2677 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) |
| 2678 | { |
| 2679 | SKIP_WHITESPACES (); |
| 2680 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, |
| 2681 | get_absolute_expression ()); |
| 2682 | |
| 2683 | switch (*input_line_pointer) |
| 2684 | { |
| 2685 | case ',': |
| 2686 | input_line_pointer++; |
| 2687 | break; |
| 2688 | |
| 2689 | default: |
| 2690 | as_warn (_("badly formed .dim directive ignored")); |
| 2691 | /* Fall through. */ |
| 2692 | |
| 2693 | case '\n': |
| 2694 | case ';': |
| 2695 | dim_index = DIMNUM; |
| 2696 | break; |
| 2697 | } |
| 2698 | } |
| 2699 | |
| 2700 | demand_empty_rest_of_line (); |
| 2701 | } |
| 2702 | |
| 2703 | static void |
| 2704 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
| 2705 | { |
| 2706 | int this_base; |
| 2707 | const char *name; |
| 2708 | |
| 2709 | if (def_symbol_in_progress == NULL) |
| 2710 | { |
| 2711 | obj_coff_ln (0); |
| 2712 | return; |
| 2713 | } |
| 2714 | |
| 2715 | name = S_GET_NAME (def_symbol_in_progress); |
| 2716 | this_base = get_absolute_expression (); |
| 2717 | |
| 2718 | /* Only .bf symbols indicate the use of a new base line number; the |
| 2719 | line numbers associated with .ef, .bb, .eb are relative to the |
| 2720 | start of the containing function. */ |
| 2721 | if (streq (".bf", name)) |
| 2722 | { |
| 2723 | line_base = this_base; |
| 2724 | |
| 2725 | #ifndef NO_LISTING |
| 2726 | { |
| 2727 | extern int listing; |
| 2728 | if (listing) |
| 2729 | listing_source_line ((unsigned int) line_base); |
| 2730 | } |
| 2731 | #endif |
| 2732 | } |
| 2733 | |
| 2734 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 2735 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
| 2736 | |
| 2737 | demand_empty_rest_of_line (); |
| 2738 | } |
| 2739 | |
| 2740 | static void |
| 2741 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
| 2742 | { |
| 2743 | if (def_symbol_in_progress == NULL) |
| 2744 | { |
| 2745 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); |
| 2746 | demand_empty_rest_of_line (); |
| 2747 | return; |
| 2748 | } |
| 2749 | |
| 2750 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 2751 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); |
| 2752 | demand_empty_rest_of_line (); |
| 2753 | } |
| 2754 | |
| 2755 | static void |
| 2756 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
| 2757 | { |
| 2758 | if (def_symbol_in_progress == NULL) |
| 2759 | { |
| 2760 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); |
| 2761 | demand_empty_rest_of_line (); |
| 2762 | return; |
| 2763 | } |
| 2764 | |
| 2765 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); |
| 2766 | demand_empty_rest_of_line (); |
| 2767 | } |
| 2768 | |
| 2769 | static void |
| 2770 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
| 2771 | { |
| 2772 | char *symbol_name; |
| 2773 | char name_end; |
| 2774 | |
| 2775 | if (def_symbol_in_progress == NULL) |
| 2776 | { |
| 2777 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); |
| 2778 | demand_empty_rest_of_line (); |
| 2779 | return; |
| 2780 | } |
| 2781 | |
| 2782 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
| 2783 | symbol_name = input_line_pointer; |
| 2784 | name_end = get_symbol_end (); |
| 2785 | #ifdef tc_canonicalize_symbol_name |
| 2786 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
| 2787 | #endif |
| 2788 | |
| 2789 | /* Assume that the symbol referred to by .tag is always defined. |
| 2790 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
| 2791 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
| 2792 | (long) tag_find_or_make (symbol_name)); |
| 2793 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) |
| 2794 | as_warn (_("tag not found for .tag %s"), symbol_name); |
| 2795 | |
| 2796 | SF_SET_TAGGED (def_symbol_in_progress); |
| 2797 | *input_line_pointer = name_end; |
| 2798 | |
| 2799 | demand_empty_rest_of_line (); |
| 2800 | } |
| 2801 | |
| 2802 | static void |
| 2803 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
| 2804 | { |
| 2805 | if (def_symbol_in_progress == NULL) |
| 2806 | { |
| 2807 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); |
| 2808 | demand_empty_rest_of_line (); |
| 2809 | return; |
| 2810 | } |
| 2811 | |
| 2812 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); |
| 2813 | |
| 2814 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && |
| 2815 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) |
| 2816 | SF_SET_FUNCTION (def_symbol_in_progress); |
| 2817 | |
| 2818 | demand_empty_rest_of_line (); |
| 2819 | } |
| 2820 | |
| 2821 | static void |
| 2822 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
| 2823 | { |
| 2824 | if (def_symbol_in_progress == NULL) |
| 2825 | { |
| 2826 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); |
| 2827 | demand_empty_rest_of_line (); |
| 2828 | return; |
| 2829 | } |
| 2830 | |
| 2831 | if (is_name_beginner (*input_line_pointer)) |
| 2832 | { |
| 2833 | char *symbol_name = input_line_pointer; |
| 2834 | char name_end = get_symbol_end (); |
| 2835 | |
| 2836 | #ifdef tc_canonicalize_symbol_name |
| 2837 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
| 2838 | #endif |
| 2839 | |
| 2840 | if (streq (symbol_name, ".")) |
| 2841 | { |
| 2842 | def_symbol_in_progress->sy_frag = frag_now; |
| 2843 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
| 2844 | /* If the .val is != from the .def (e.g. statics). */ |
| 2845 | } |
| 2846 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
| 2847 | { |
| 2848 | def_symbol_in_progress->sy_value.X_op = O_symbol; |
| 2849 | def_symbol_in_progress->sy_value.X_add_symbol = |
| 2850 | symbol_find_or_make (symbol_name); |
| 2851 | def_symbol_in_progress->sy_value.X_op_symbol = NULL; |
| 2852 | def_symbol_in_progress->sy_value.X_add_number = 0; |
| 2853 | |
| 2854 | /* If the segment is undefined when the forward reference is |
| 2855 | resolved, then copy the segment id from the forward |
| 2856 | symbol. */ |
| 2857 | SF_SET_GET_SEGMENT (def_symbol_in_progress); |
| 2858 | |
| 2859 | /* FIXME: gcc can generate address expressions here in |
| 2860 | unusual cases (search for "obscure" in sdbout.c). We |
| 2861 | just ignore the offset here, thus generating incorrect |
| 2862 | debugging information. We ignore the rest of the line |
| 2863 | just below. */ |
| 2864 | } |
| 2865 | /* Otherwise, it is the name of a non debug symbol and |
| 2866 | its value will be calculated later. */ |
| 2867 | *input_line_pointer = name_end; |
| 2868 | |
| 2869 | /* FIXME: this is to avoid an error message in the |
| 2870 | FIXME case mentioned just above. */ |
| 2871 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
| 2872 | ++input_line_pointer; |
| 2873 | } |
| 2874 | else |
| 2875 | { |
| 2876 | S_SET_VALUE (def_symbol_in_progress, |
| 2877 | (valueT) get_absolute_expression ()); |
| 2878 | } |
| 2879 | |
| 2880 | demand_empty_rest_of_line (); |
| 2881 | } |
| 2882 | |
| 2883 | #ifdef TE_PE |
| 2884 | |
| 2885 | /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in |
| 2886 | read.c, which then calls this object file format specific routine. */ |
| 2887 | |
| 2888 | void |
| 2889 | obj_coff_pe_handle_link_once (enum linkonce_type type) |
| 2890 | { |
| 2891 | seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT; |
| 2892 | |
| 2893 | /* We store the type in the seg_info structure, and use it to set up |
| 2894 | the auxiliary entry for the section symbol in c_section_symbol. */ |
| 2895 | seg_info (now_seg)->linkonce = type; |
| 2896 | } |
| 2897 | |
| 2898 | #endif /* TE_PE */ |
| 2899 | |
| 2900 | void |
| 2901 | coff_obj_read_begin_hook (void) |
| 2902 | { |
| 2903 | /* These had better be the same. Usually 18 bytes. */ |
| 2904 | #ifndef BFD_HEADERS |
| 2905 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
| 2906 | know (SYMESZ == AUXESZ); |
| 2907 | #endif |
| 2908 | tag_init (); |
| 2909 | } |
| 2910 | |
| 2911 | /* This function runs through the symbol table and puts all the |
| 2912 | externals onto another chain. */ |
| 2913 | |
| 2914 | /* The chain of globals. */ |
| 2915 | symbolS *symbol_globalP; |
| 2916 | symbolS *symbol_global_lastP; |
| 2917 | |
| 2918 | /* The chain of externals. */ |
| 2919 | symbolS *symbol_externP; |
| 2920 | symbolS *symbol_extern_lastP; |
| 2921 | |
| 2922 | stack *block_stack; |
| 2923 | symbolS *last_functionP; |
| 2924 | static symbolS *last_bfP; |
| 2925 | symbolS *last_tagP; |
| 2926 | |
| 2927 | static unsigned int |
| 2928 | yank_symbols (void) |
| 2929 | { |
| 2930 | symbolS *symbolP; |
| 2931 | unsigned int symbol_number = 0; |
| 2932 | unsigned int last_file_symno = 0; |
| 2933 | struct filename_list *filename_list_scan = filename_list_head; |
| 2934 | |
| 2935 | for (symbolP = symbol_rootP; |
| 2936 | symbolP; |
| 2937 | symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP) |
| 2938 | { |
| 2939 | if (symbolP->sy_mri_common) |
| 2940 | { |
| 2941 | if (S_GET_STORAGE_CLASS (symbolP) == C_EXT |
| 2942 | #ifdef TE_PE |
| 2943 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK |
| 2944 | #endif |
| 2945 | || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT) |
| 2946 | as_bad (_("%s: global symbols not supported in common sections"), |
| 2947 | S_GET_NAME (symbolP)); |
| 2948 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 2949 | continue; |
| 2950 | } |
| 2951 | |
| 2952 | if (!SF_GET_DEBUG (symbolP)) |
| 2953 | { |
| 2954 | /* Debug symbols do not need all this rubbish. */ |
| 2955 | symbolS *real_symbolP; |
| 2956 | |
| 2957 | /* L* and C_EFCN symbols never merge. */ |
| 2958 | if (!SF_GET_LOCAL (symbolP) |
| 2959 | && !SF_GET_STATICS (symbolP) |
| 2960 | && S_GET_STORAGE_CLASS (symbolP) != C_LABEL |
| 2961 | && symbolP->sy_value.X_op == O_constant |
| 2962 | && (real_symbolP = symbol_find (S_GET_NAME (symbolP))) |
| 2963 | && real_symbolP != symbolP) |
| 2964 | { |
| 2965 | /* FIXME-SOON: where do dups come from? |
| 2966 | Maybe tag references before definitions? xoxorich. */ |
| 2967 | /* Move the debug data from the debug symbol to the |
| 2968 | real symbol. Do NOT do the opposite (i.e. move from |
| 2969 | real symbol to debug symbol and remove real symbol from the |
| 2970 | list.) Because some pointers refer to the real symbol |
| 2971 | whereas no pointers refer to the debug symbol. */ |
| 2972 | c_symbol_merge (symbolP, real_symbolP); |
| 2973 | /* Replace the current symbol by the real one. */ |
| 2974 | /* The symbols will never be the last or the first |
| 2975 | because : 1st symbol is .file and 3 last symbols are |
| 2976 | .text, .data, .bss. */ |
| 2977 | symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP); |
| 2978 | symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP); |
| 2979 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 2980 | symbolP = real_symbolP; |
| 2981 | } |
| 2982 | |
| 2983 | if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1)) |
| 2984 | S_SET_SEGMENT (symbolP, SEG_E0); |
| 2985 | |
| 2986 | resolve_symbol_value (symbolP); |
| 2987 | |
| 2988 | if (S_GET_STORAGE_CLASS (symbolP) == C_NULL) |
| 2989 | { |
| 2990 | if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP)) |
| 2991 | S_SET_EXTERNAL (symbolP); |
| 2992 | |
| 2993 | else if (S_GET_SEGMENT (symbolP) == SEG_E0) |
| 2994 | S_SET_STORAGE_CLASS (symbolP, C_LABEL); |
| 2995 | |
| 2996 | else |
| 2997 | S_SET_STORAGE_CLASS (symbolP, C_STAT); |
| 2998 | } |
| 2999 | |
| 3000 | /* Mainly to speed up if not -g. */ |
| 3001 | if (SF_GET_PROCESS (symbolP)) |
| 3002 | { |
| 3003 | /* Handle the nested blocks auxiliary info. */ |
| 3004 | if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK) |
| 3005 | { |
| 3006 | if (streq (S_GET_NAME (symbolP), ".bb")) |
| 3007 | stack_push (block_stack, (char *) &symbolP); |
| 3008 | else |
| 3009 | { |
| 3010 | /* .eb */ |
| 3011 | symbolS *begin_symbolP; |
| 3012 | |
| 3013 | begin_symbolP = *(symbolS **) stack_pop (block_stack); |
| 3014 | if (begin_symbolP == NULL) |
| 3015 | as_warn (_("mismatched .eb")); |
| 3016 | else |
| 3017 | SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2); |
| 3018 | } |
| 3019 | } |
| 3020 | |
| 3021 | /* If we are able to identify the type of a function, and we |
| 3022 | are out of a function (last_functionP == 0) then, the |
| 3023 | function symbol will be associated with an auxiliary |
| 3024 | entry. */ |
| 3025 | if (last_functionP == NULL && SF_GET_FUNCTION (symbolP)) |
| 3026 | { |
| 3027 | last_functionP = symbolP; |
| 3028 | |
| 3029 | if (S_GET_NUMBER_AUXILIARY (symbolP) < 1) |
| 3030 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
| 3031 | } |
| 3032 | |
| 3033 | if (S_GET_STORAGE_CLASS (symbolP) == C_FCN) |
| 3034 | { |
| 3035 | if (streq (S_GET_NAME (symbolP), ".bf")) |
| 3036 | { |
| 3037 | if (last_bfP != NULL) |
| 3038 | SA_SET_SYM_ENDNDX (last_bfP, symbol_number); |
| 3039 | last_bfP = symbolP; |
| 3040 | } |
| 3041 | } |
| 3042 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN) |
| 3043 | { |
| 3044 | /* I don't even know if this is needed for sdb. But |
| 3045 | the standard assembler generates it, so... */ |
| 3046 | if (last_functionP == NULL) |
| 3047 | as_fatal (_("C_EFCN symbol out of scope")); |
| 3048 | SA_SET_SYM_FSIZE (last_functionP, |
| 3049 | (long) (S_GET_VALUE (symbolP) - |
| 3050 | S_GET_VALUE (last_functionP))); |
| 3051 | SA_SET_SYM_ENDNDX (last_functionP, symbol_number); |
| 3052 | last_functionP = NULL; |
| 3053 | } |
| 3054 | } |
| 3055 | } |
| 3056 | else if (SF_GET_TAG (symbolP)) |
| 3057 | /* First descriptor of a structure must point to |
| 3058 | the first slot after the structure description. */ |
| 3059 | last_tagP = symbolP; |
| 3060 | |
| 3061 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS) |
| 3062 | /* +2 take in account the current symbol. */ |
| 3063 | SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2); |
| 3064 | |
| 3065 | else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE) |
| 3066 | { |
| 3067 | /* If the filename was too long to fit in the |
| 3068 | auxent, put it in the string table. */ |
| 3069 | if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 |
| 3070 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) |
| 3071 | { |
| 3072 | SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count); |
| 3073 | string_byte_count += strlen (filename_list_scan->filename) + 1; |
| 3074 | filename_list_scan = filename_list_scan->next; |
| 3075 | } |
| 3076 | if (S_GET_VALUE (symbolP)) |
| 3077 | { |
| 3078 | S_SET_VALUE (symbolP, last_file_symno); |
| 3079 | last_file_symno = symbol_number; |
| 3080 | } |
| 3081 | } |
| 3082 | |
| 3083 | #ifdef tc_frob_coff_symbol |
| 3084 | tc_frob_coff_symbol (symbolP); |
| 3085 | #endif |
| 3086 | |
| 3087 | /* We must put the external symbols apart. The loader |
| 3088 | does not bomb if we do not. But the references in |
| 3089 | the endndx field for a .bb symbol are not corrected |
| 3090 | if an external symbol is removed between .bb and .be. |
| 3091 | I.e in the following case : |
| 3092 | [20] .bb endndx = 22 |
| 3093 | [21] foo external |
| 3094 | [22] .be |
| 3095 | ld will move the symbol 21 to the end of the list but |
| 3096 | endndx will still be 22 instead of 21. */ |
| 3097 | |
| 3098 | if (SF_GET_LOCAL (symbolP)) |
| 3099 | /* Remove C_EFCN and LOCAL (L...) symbols. */ |
| 3100 | /* Next pointer remains valid. */ |
| 3101 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 3102 | |
| 3103 | else if (symbolP->sy_value.X_op == O_symbol |
| 3104 | && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))) |
| 3105 | /* Skip symbols which were equated to undefined or common |
| 3106 | symbols. */ |
| 3107 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 3108 | |
| 3109 | else if (!S_IS_DEFINED (symbolP) |
| 3110 | && !S_IS_DEBUG (symbolP) |
| 3111 | && !SF_GET_STATICS (symbolP) |
| 3112 | && (S_GET_STORAGE_CLASS (symbolP) == C_EXT |
| 3113 | #ifdef TE_PE |
| 3114 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK |
| 3115 | #endif |
| 3116 | || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)) |
| 3117 | { |
| 3118 | /* If external, Remove from the list. */ |
| 3119 | symbolS *hold = symbol_previous (symbolP); |
| 3120 | |
| 3121 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 3122 | symbol_clear_list_pointers (symbolP); |
| 3123 | symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP); |
| 3124 | symbolP = hold; |
| 3125 | } |
| 3126 | else if (! S_IS_DEBUG (symbolP) |
| 3127 | && ! SF_GET_STATICS (symbolP) |
| 3128 | && ! SF_GET_FUNCTION (symbolP) |
| 3129 | && (S_GET_STORAGE_CLASS (symbolP) == C_EXT |
| 3130 | #ifdef TE_PE |
| 3131 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK |
| 3132 | #endif |
| 3133 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK)) |
| 3134 | { |
| 3135 | symbolS *hold = symbol_previous (symbolP); |
| 3136 | |
| 3137 | /* The O'Reilly COFF book says that defined global symbols |
| 3138 | come at the end of the symbol table, just before |
| 3139 | undefined global symbols. */ |
| 3140 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 3141 | symbol_clear_list_pointers (symbolP); |
| 3142 | symbol_append (symbolP, symbol_global_lastP, &symbol_globalP, |
| 3143 | &symbol_global_lastP); |
| 3144 | symbolP = hold; |
| 3145 | } |
| 3146 | else |
| 3147 | { |
| 3148 | if (SF_GET_STRING (symbolP)) |
| 3149 | { |
| 3150 | symbolP->sy_name_offset = string_byte_count; |
| 3151 | string_byte_count += strlen (S_GET_NAME (symbolP)) + 1; |
| 3152 | } |
| 3153 | else |
| 3154 | symbolP->sy_name_offset = 0; |
| 3155 | |
| 3156 | symbolP->sy_number = symbol_number; |
| 3157 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); |
| 3158 | } |
| 3159 | } |
| 3160 | |
| 3161 | return symbol_number; |
| 3162 | } |
| 3163 | |
| 3164 | static unsigned int |
| 3165 | glue_symbols (symbolS **head, symbolS **tail) |
| 3166 | { |
| 3167 | unsigned int symbol_number = 0; |
| 3168 | |
| 3169 | while (*head != NULL) |
| 3170 | { |
| 3171 | symbolS *tmp = *head; |
| 3172 | |
| 3173 | /* Append. */ |
| 3174 | symbol_remove (tmp, head, tail); |
| 3175 | symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP); |
| 3176 | |
| 3177 | /* Process. */ |
| 3178 | if (SF_GET_STRING (tmp)) |
| 3179 | { |
| 3180 | tmp->sy_name_offset = string_byte_count; |
| 3181 | string_byte_count += strlen (S_GET_NAME (tmp)) + 1; |
| 3182 | } |
| 3183 | else |
| 3184 | /* Fix "long" names. */ |
| 3185 | tmp->sy_name_offset = 0; |
| 3186 | |
| 3187 | tmp->sy_number = symbol_number; |
| 3188 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp); |
| 3189 | } |
| 3190 | |
| 3191 | return symbol_number; |
| 3192 | } |
| 3193 | |
| 3194 | static unsigned int |
| 3195 | tie_tags (void) |
| 3196 | { |
| 3197 | unsigned int symbol_number = 0; |
| 3198 | symbolS *symbolP; |
| 3199 | |
| 3200 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) |
| 3201 | { |
| 3202 | symbolP->sy_number = symbol_number; |
| 3203 | |
| 3204 | if (SF_GET_TAGGED (symbolP)) |
| 3205 | { |
| 3206 | SA_SET_SYM_TAGNDX |
| 3207 | (symbolP, |
| 3208 | ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number); |
| 3209 | } |
| 3210 | |
| 3211 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); |
| 3212 | } |
| 3213 | |
| 3214 | return symbol_number; |
| 3215 | } |
| 3216 | |
| 3217 | |
| 3218 | /* Build a 'section static' symbol. */ |
| 3219 | |
| 3220 | static symbolS * |
| 3221 | c_section_symbol (char *name, int idx) |
| 3222 | { |
| 3223 | symbolS *symbolP; |
| 3224 | |
| 3225 | symbolP = symbol_find (name); |
| 3226 | if (symbolP == NULL) |
| 3227 | symbolP = symbol_new (name, idx, 0, &zero_address_frag); |
| 3228 | else |
| 3229 | { |
| 3230 | /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */ |
| 3231 | S_SET_SEGMENT (symbolP, idx); |
| 3232 | symbolP->sy_frag = &zero_address_frag; |
| 3233 | } |
| 3234 | |
| 3235 | S_SET_STORAGE_CLASS (symbolP, C_STAT); |
| 3236 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
| 3237 | |
| 3238 | SF_SET_STATICS (symbolP); |
| 3239 | |
| 3240 | #ifdef TE_DELTA |
| 3241 | /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared, |
| 3242 | which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */ |
| 3243 | SF_CLEAR_LOCAL (symbolP); |
| 3244 | #endif |
| 3245 | #ifdef TE_PE |
| 3246 | /* If the .linkonce pseudo-op was used for this section, we must |
| 3247 | store the information in the auxiliary entry for the section |
| 3248 | symbol. */ |
| 3249 | if (segment_info[idx].linkonce != LINKONCE_UNSET) |
| 3250 | { |
| 3251 | int type; |
| 3252 | |
| 3253 | switch (segment_info[idx].linkonce) |
| 3254 | { |
| 3255 | default: |
| 3256 | abort (); |
| 3257 | case LINKONCE_DISCARD: |
| 3258 | type = IMAGE_COMDAT_SELECT_ANY; |
| 3259 | break; |
| 3260 | case LINKONCE_ONE_ONLY: |
| 3261 | type = IMAGE_COMDAT_SELECT_NODUPLICATES; |
| 3262 | break; |
| 3263 | case LINKONCE_SAME_SIZE: |
| 3264 | type = IMAGE_COMDAT_SELECT_SAME_SIZE; |
| 3265 | break; |
| 3266 | case LINKONCE_SAME_CONTENTS: |
| 3267 | type = IMAGE_COMDAT_SELECT_EXACT_MATCH; |
| 3268 | break; |
| 3269 | } |
| 3270 | |
| 3271 | SYM_AUXENT (symbolP)->x_scn.x_comdat = type; |
| 3272 | } |
| 3273 | #endif /* TE_PE */ |
| 3274 | |
| 3275 | return symbolP; |
| 3276 | } |
| 3277 | |
| 3278 | static void |
| 3279 | crawl_symbols (object_headers *h, bfd *abfd ATTRIBUTE_UNUSED) |
| 3280 | { |
| 3281 | unsigned int i; |
| 3282 | |
| 3283 | /* Initialize the stack used to keep track of the matching .bb .be. */ |
| 3284 | block_stack = stack_init (512, sizeof (symbolS *)); |
| 3285 | |
| 3286 | /* The symbol list should be ordered according to the following sequence |
| 3287 | order : |
| 3288 | . .file symbol |
| 3289 | . debug entries for functions |
| 3290 | . fake symbols for the sections, including .text .data and .bss |
| 3291 | . defined symbols |
| 3292 | . undefined symbols |
| 3293 | But this is not mandatory. The only important point is to put the |
| 3294 | undefined symbols at the end of the list. */ |
| 3295 | |
| 3296 | /* Is there a .file symbol ? If not insert one at the beginning. */ |
| 3297 | if (symbol_rootP == NULL |
| 3298 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) |
| 3299 | c_dot_file_symbol ("fake", 0); |
| 3300 | |
| 3301 | /* Build up static symbols for the sections, they are filled in later. */ |
| 3302 | for (i = SEG_E0; i < SEG_LAST; i++) |
| 3303 | if (segment_info[i].scnhdr.s_name[0]) |
| 3304 | segment_info[i].dot = c_section_symbol ((char *) segment_info[i].name, |
| 3305 | i - SEG_E0 + 1); |
| 3306 | |
| 3307 | /* Take all the externals out and put them into another chain. */ |
| 3308 | H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ()); |
| 3309 | /* Take the externals and glue them onto the end. */ |
| 3310 | H_SET_SYMBOL_TABLE_SIZE (h, |
| 3311 | (H_GET_SYMBOL_COUNT (h) |
| 3312 | + glue_symbols (&symbol_globalP, |
| 3313 | &symbol_global_lastP) |
| 3314 | + glue_symbols (&symbol_externP, |
| 3315 | &symbol_extern_lastP))); |
| 3316 | |
| 3317 | H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ()); |
| 3318 | know (symbol_globalP == NULL); |
| 3319 | know (symbol_global_lastP == NULL); |
| 3320 | know (symbol_externP == NULL); |
| 3321 | know (symbol_extern_lastP == NULL); |
| 3322 | } |
| 3323 | |
| 3324 | /* Find strings by crawling along symbol table chain. */ |
| 3325 | |
| 3326 | static void |
| 3327 | w_strings (char *where) |
| 3328 | { |
| 3329 | symbolS *symbolP; |
| 3330 | struct filename_list *filename_list_scan = filename_list_head; |
| 3331 | |
| 3332 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK. */ |
| 3333 | md_number_to_chars (where, (valueT) string_byte_count, 4); |
| 3334 | where += 4; |
| 3335 | |
| 3336 | #ifdef COFF_LONG_SECTION_NAMES |
| 3337 | /* Support long section names as found in PE. This code must |
| 3338 | coordinate with that in coff_header_append and write_object_file. */ |
| 3339 | { |
| 3340 | unsigned int i; |
| 3341 | |
| 3342 | for (i = SEG_E0; i < SEG_LAST; i++) |
| 3343 | { |
| 3344 | if (segment_info[i].scnhdr.s_name[0] |
| 3345 | && strlen (segment_info[i].name) > SCNNMLEN) |
| 3346 | { |
| 3347 | unsigned int size; |
| 3348 | |
| 3349 | size = strlen (segment_info[i].name) + 1; |
| 3350 | memcpy (where, segment_info[i].name, size); |
| 3351 | where += size; |
| 3352 | } |
| 3353 | } |
| 3354 | } |
| 3355 | #endif /* COFF_LONG_SECTION_NAMES */ |
| 3356 | |
| 3357 | for (symbolP = symbol_rootP; |
| 3358 | symbolP; |
| 3359 | symbolP = symbol_next (symbolP)) |
| 3360 | { |
| 3361 | unsigned int size; |
| 3362 | |
| 3363 | if (SF_GET_STRING (symbolP)) |
| 3364 | { |
| 3365 | size = strlen (S_GET_NAME (symbolP)) + 1; |
| 3366 | memcpy (where, S_GET_NAME (symbolP), size); |
| 3367 | where += size; |
| 3368 | } |
| 3369 | if (S_GET_STORAGE_CLASS (symbolP) == C_FILE |
| 3370 | && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 |
| 3371 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) |
| 3372 | { |
| 3373 | size = strlen (filename_list_scan->filename) + 1; |
| 3374 | memcpy (where, filename_list_scan->filename, size); |
| 3375 | filename_list_scan = filename_list_scan ->next; |
| 3376 | where += size; |
| 3377 | } |
| 3378 | } |
| 3379 | } |
| 3380 | |
| 3381 | static void |
| 3382 | do_linenos_for (bfd * abfd, |
| 3383 | object_headers * h, |
| 3384 | unsigned long *file_cursor) |
| 3385 | { |
| 3386 | unsigned int idx; |
| 3387 | unsigned long start = *file_cursor; |
| 3388 | |
| 3389 | for (idx = SEG_E0; idx < SEG_LAST; idx++) |
| 3390 | { |
| 3391 | segment_info_type *s = segment_info + idx; |
| 3392 | |
| 3393 | if (s->scnhdr.s_nlnno != 0) |
| 3394 | { |
| 3395 | struct lineno_list *line_ptr; |
| 3396 | struct external_lineno *buffer = xmalloc (s->scnhdr.s_nlnno * LINESZ); |
| 3397 | struct external_lineno *dst = buffer; |
| 3398 | |
| 3399 | /* Run through the table we've built and turn it into its external |
| 3400 | form, take this chance to remove duplicates. */ |
| 3401 | |
| 3402 | for (line_ptr = s->lineno_list_head; |
| 3403 | line_ptr != (struct lineno_list *) NULL; |
| 3404 | line_ptr = line_ptr->next) |
| 3405 | { |
| 3406 | if (line_ptr->line.l_lnno == 0) |
| 3407 | { |
| 3408 | /* Turn a pointer to a symbol into the symbols' index, |
| 3409 | provided that it has been initialised. */ |
| 3410 | if (line_ptr->line.l_addr.l_symndx) |
| 3411 | line_ptr->line.l_addr.l_symndx = |
| 3412 | ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number; |
| 3413 | } |
| 3414 | else |
| 3415 | line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address; |
| 3416 | |
| 3417 | (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst); |
| 3418 | dst++; |
| 3419 | } |
| 3420 | |
| 3421 | s->scnhdr.s_lnnoptr = *file_cursor; |
| 3422 | |
| 3423 | bfd_bwrite (buffer, (bfd_size_type) s->scnhdr.s_nlnno * LINESZ, abfd); |
| 3424 | free (buffer); |
| 3425 | |
| 3426 | *file_cursor += s->scnhdr.s_nlnno * LINESZ; |
| 3427 | } |
| 3428 | } |
| 3429 | |
| 3430 | H_SET_LINENO_SIZE (h, *file_cursor - start); |
| 3431 | } |
| 3432 | |
| 3433 | /* Now we run through the list of frag chains in a segment and |
| 3434 | make all the subsegment frags appear at the end of the |
| 3435 | list, as if the seg 0 was extra long. */ |
| 3436 | |
| 3437 | static void |
| 3438 | remove_subsegs (void) |
| 3439 | { |
| 3440 | unsigned int i; |
| 3441 | |
| 3442 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 3443 | { |
| 3444 | frchainS *head = segment_info[i].frchainP; |
| 3445 | fragS dummy; |
| 3446 | fragS *prev_frag = &dummy; |
| 3447 | |
| 3448 | while (head && head->frch_seg == i) |
| 3449 | { |
| 3450 | prev_frag->fr_next = head->frch_root; |
| 3451 | prev_frag = head->frch_last; |
| 3452 | head = head->frch_next; |
| 3453 | } |
| 3454 | prev_frag->fr_next = 0; |
| 3455 | } |
| 3456 | } |
| 3457 | |
| 3458 | unsigned long machine; |
| 3459 | int coff_flags; |
| 3460 | |
| 3461 | #ifndef SUB_SEGMENT_ALIGN |
| 3462 | #ifdef HANDLE_ALIGN |
| 3463 | /* The last subsegment gets an alignment corresponding to the alignment |
| 3464 | of the section. This allows proper nop-filling at the end of |
| 3465 | code-bearing sections. */ |
| 3466 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ |
| 3467 | (!(FRCHAIN)->frch_next || (FRCHAIN)->frch_next->frch_seg != (SEG) \ |
| 3468 | ? get_recorded_alignment (SEG) : 0) |
| 3469 | #else |
| 3470 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 1 |
| 3471 | #endif |
| 3472 | #endif |
| 3473 | |
| 3474 | static void |
| 3475 | w_symbols (bfd * abfd, char *where, symbolS * symbol_rootP) |
| 3476 | { |
| 3477 | symbolS *symbolP; |
| 3478 | unsigned int i; |
| 3479 | |
| 3480 | /* First fill in those values we have only just worked out. */ |
| 3481 | for (i = SEG_E0; i < SEG_LAST; i++) |
| 3482 | { |
| 3483 | symbolP = segment_info[i].dot; |
| 3484 | if (symbolP) |
| 3485 | { |
| 3486 | SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size); |
| 3487 | SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc); |
| 3488 | SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno); |
| 3489 | } |
| 3490 | } |
| 3491 | |
| 3492 | /* Emit all symbols left in the symbol chain. */ |
| 3493 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) |
| 3494 | { |
| 3495 | /* Used to save the offset of the name. It is used to point |
| 3496 | to the string in memory but must be a file offset. */ |
| 3497 | char *temp; |
| 3498 | |
| 3499 | /* We can't fix the lnnoptr field in yank_symbols with the other |
| 3500 | adjustments, because we have to wait until we know where they |
| 3501 | go in the file. */ |
| 3502 | if (SF_GET_ADJ_LNNOPTR (symbolP)) |
| 3503 | SA_GET_SYM_LNNOPTR (symbolP) += |
| 3504 | segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr; |
| 3505 | |
| 3506 | tc_coff_symbol_emit_hook (symbolP); |
| 3507 | |
| 3508 | temp = S_GET_NAME (symbolP); |
| 3509 | if (SF_GET_STRING (symbolP)) |
| 3510 | { |
| 3511 | S_SET_OFFSET (symbolP, symbolP->sy_name_offset); |
| 3512 | S_SET_ZEROES (symbolP, 0); |
| 3513 | } |
| 3514 | else |
| 3515 | { |
| 3516 | memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN); |
| 3517 | strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN); |
| 3518 | } |
| 3519 | where = symbol_to_chars (abfd, where, symbolP); |
| 3520 | S_SET_NAME (symbolP, temp); |
| 3521 | } |
| 3522 | } |
| 3523 | |
| 3524 | static void |
| 3525 | fixup_mdeps (fragS *frags, |
| 3526 | object_headers *h ATTRIBUTE_UNUSED, |
| 3527 | segT this_segment) |
| 3528 | { |
| 3529 | subseg_change (this_segment, 0); |
| 3530 | |
| 3531 | while (frags) |
| 3532 | { |
| 3533 | switch (frags->fr_type) |
| 3534 | { |
| 3535 | case rs_align: |
| 3536 | case rs_align_code: |
| 3537 | case rs_align_test: |
| 3538 | case rs_org: |
| 3539 | #ifdef HANDLE_ALIGN |
| 3540 | HANDLE_ALIGN (frags); |
| 3541 | #endif |
| 3542 | frags->fr_type = rs_fill; |
| 3543 | frags->fr_offset = |
| 3544 | ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix) |
| 3545 | / frags->fr_var); |
| 3546 | break; |
| 3547 | case rs_machine_dependent: |
| 3548 | md_convert_frag (h, this_segment, frags); |
| 3549 | frag_wane (frags); |
| 3550 | break; |
| 3551 | default: |
| 3552 | ; |
| 3553 | } |
| 3554 | frags = frags->fr_next; |
| 3555 | } |
| 3556 | } |
| 3557 | |
| 3558 | #ifndef TC_FORCE_RELOCATION |
| 3559 | #define TC_FORCE_RELOCATION(fix) 0 |
| 3560 | #endif |
| 3561 | |
| 3562 | static void |
| 3563 | fixup_segment (segment_info_type * segP, segT this_segment_type) |
| 3564 | { |
| 3565 | fixS * fixP; |
| 3566 | symbolS *add_symbolP; |
| 3567 | symbolS *sub_symbolP; |
| 3568 | long add_number; |
| 3569 | int size; |
| 3570 | char *place; |
| 3571 | long where; |
| 3572 | char pcrel; |
| 3573 | fragS *fragP; |
| 3574 | segT add_symbol_segment = absolute_section; |
| 3575 | |
| 3576 | for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next) |
| 3577 | { |
| 3578 | fragP = fixP->fx_frag; |
| 3579 | know (fragP); |
| 3580 | where = fixP->fx_where; |
| 3581 | place = fragP->fr_literal + where; |
| 3582 | size = fixP->fx_size; |
| 3583 | add_symbolP = fixP->fx_addsy; |
| 3584 | sub_symbolP = fixP->fx_subsy; |
| 3585 | add_number = fixP->fx_offset; |
| 3586 | pcrel = fixP->fx_pcrel; |
| 3587 | |
| 3588 | /* We want function-relative stabs to work on systems which |
| 3589 | may use a relaxing linker; thus we must handle the sym1-sym2 |
| 3590 | fixups function-relative stabs generates. |
| 3591 | |
| 3592 | Of course, if you actually enable relaxing in the linker, the |
| 3593 | line and block scoping information is going to be incorrect |
| 3594 | in some cases. The only way to really fix this is to support |
| 3595 | a reloc involving the difference of two symbols. */ |
| 3596 | if (linkrelax |
| 3597 | && (!sub_symbolP || pcrel)) |
| 3598 | continue; |
| 3599 | |
| 3600 | #ifdef TC_I960 |
| 3601 | if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP)) |
| 3602 | { |
| 3603 | /* Relocation should be done via the associated 'bal' entry |
| 3604 | point symbol. */ |
| 3605 | if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP))) |
| 3606 | { |
| 3607 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3608 | _("No 'bal' entry point for leafproc %s"), |
| 3609 | S_GET_NAME (add_symbolP)); |
| 3610 | continue; |
| 3611 | } |
| 3612 | fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP); |
| 3613 | } |
| 3614 | #endif |
| 3615 | |
| 3616 | /* Make sure the symbols have been resolved; this may not have |
| 3617 | happened if these are expression symbols. */ |
| 3618 | if (add_symbolP != NULL && ! add_symbolP->sy_resolved) |
| 3619 | resolve_symbol_value (add_symbolP); |
| 3620 | |
| 3621 | if (add_symbolP != NULL) |
| 3622 | { |
| 3623 | /* If this fixup is against a symbol which has been equated |
| 3624 | to another symbol, convert it to the other symbol. */ |
| 3625 | if (add_symbolP->sy_value.X_op == O_symbol |
| 3626 | && (! S_IS_DEFINED (add_symbolP) |
| 3627 | || S_IS_COMMON (add_symbolP))) |
| 3628 | { |
| 3629 | while (add_symbolP->sy_value.X_op == O_symbol |
| 3630 | && (! S_IS_DEFINED (add_symbolP) |
| 3631 | || S_IS_COMMON (add_symbolP))) |
| 3632 | { |
| 3633 | symbolS *n; |
| 3634 | |
| 3635 | /* We must avoid looping, as that can occur with a |
| 3636 | badly written program. */ |
| 3637 | n = add_symbolP->sy_value.X_add_symbol; |
| 3638 | if (n == add_symbolP) |
| 3639 | break; |
| 3640 | add_number += add_symbolP->sy_value.X_add_number; |
| 3641 | add_symbolP = n; |
| 3642 | } |
| 3643 | fixP->fx_addsy = add_symbolP; |
| 3644 | fixP->fx_offset = add_number; |
| 3645 | } |
| 3646 | } |
| 3647 | |
| 3648 | if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved) |
| 3649 | resolve_symbol_value (sub_symbolP); |
| 3650 | |
| 3651 | if (add_symbolP != NULL |
| 3652 | && add_symbolP->sy_mri_common) |
| 3653 | { |
| 3654 | add_number += S_GET_VALUE (add_symbolP); |
| 3655 | fixP->fx_offset = add_number; |
| 3656 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; |
| 3657 | } |
| 3658 | |
| 3659 | if (add_symbolP) |
| 3660 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); |
| 3661 | |
| 3662 | if (sub_symbolP) |
| 3663 | { |
| 3664 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) |
| 3665 | { |
| 3666 | if (add_symbolP != NULL) |
| 3667 | { |
| 3668 | add_number += S_GET_VALUE (add_symbolP); |
| 3669 | add_symbolP = NULL; |
| 3670 | fixP->fx_addsy = NULL; |
| 3671 | } |
| 3672 | |
| 3673 | /* It's just -sym. */ |
| 3674 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) |
| 3675 | { |
| 3676 | add_number -= S_GET_VALUE (sub_symbolP); |
| 3677 | fixP->fx_subsy = 0; |
| 3678 | fixP->fx_done = 1; |
| 3679 | } |
| 3680 | else |
| 3681 | { |
| 3682 | #ifndef TC_M68K |
| 3683 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3684 | _("Negative of non-absolute symbol %s"), |
| 3685 | S_GET_NAME (sub_symbolP)); |
| 3686 | #endif |
| 3687 | add_number -= S_GET_VALUE (sub_symbolP); |
| 3688 | } /* not absolute */ |
| 3689 | |
| 3690 | /* If sub_symbol is in the same segment that add_symbol |
| 3691 | and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE. */ |
| 3692 | } |
| 3693 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment |
| 3694 | && SEG_NORMAL (add_symbol_segment)) |
| 3695 | { |
| 3696 | /* Difference of 2 symbols from same segment. Can't |
| 3697 | make difference of 2 undefineds: 'value' means |
| 3698 | something different for N_UNDF. */ |
| 3699 | #ifdef TC_I960 |
| 3700 | /* Makes no sense to use the difference of 2 arbitrary symbols |
| 3701 | as the target of a call instruction. */ |
| 3702 | if (fixP->fx_tcbit) |
| 3703 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3704 | _("callj to difference of 2 symbols")); |
| 3705 | #endif /* TC_I960 */ |
| 3706 | add_number += S_GET_VALUE (add_symbolP) - |
| 3707 | S_GET_VALUE (sub_symbolP); |
| 3708 | add_symbolP = NULL; |
| 3709 | |
| 3710 | if (!TC_FORCE_RELOCATION (fixP)) |
| 3711 | { |
| 3712 | fixP->fx_addsy = NULL; |
| 3713 | fixP->fx_subsy = NULL; |
| 3714 | fixP->fx_done = 1; |
| 3715 | #ifdef TC_M68K /* FIXME: Is this right? */ |
| 3716 | pcrel = 0; |
| 3717 | fixP->fx_pcrel = 0; |
| 3718 | #endif |
| 3719 | } |
| 3720 | } |
| 3721 | else |
| 3722 | { |
| 3723 | /* Different segments in subtraction. */ |
| 3724 | know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); |
| 3725 | |
| 3726 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) |
| 3727 | add_number -= S_GET_VALUE (sub_symbolP); |
| 3728 | |
| 3729 | #ifdef DIFF_EXPR_OK |
| 3730 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type) |
| 3731 | { |
| 3732 | /* Make it pc-relative. */ |
| 3733 | add_number += (md_pcrel_from (fixP) |
| 3734 | - S_GET_VALUE (sub_symbolP)); |
| 3735 | pcrel = 1; |
| 3736 | fixP->fx_pcrel = 1; |
| 3737 | sub_symbolP = 0; |
| 3738 | fixP->fx_subsy = 0; |
| 3739 | } |
| 3740 | #endif |
| 3741 | else |
| 3742 | { |
| 3743 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3744 | _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."), |
| 3745 | segment_name (S_GET_SEGMENT (sub_symbolP)), |
| 3746 | S_GET_NAME (sub_symbolP), |
| 3747 | (long) (fragP->fr_address + where)); |
| 3748 | } |
| 3749 | } |
| 3750 | } |
| 3751 | |
| 3752 | if (add_symbolP) |
| 3753 | { |
| 3754 | if (add_symbol_segment == this_segment_type && pcrel) |
| 3755 | { |
| 3756 | /* This fixup was made when the symbol's segment was |
| 3757 | SEG_UNKNOWN, but it is now in the local segment. |
| 3758 | So we know how to do the address without relocation. */ |
| 3759 | #ifdef TC_I960 |
| 3760 | /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', |
| 3761 | in which cases it modifies *fixP as appropriate. In the case |
| 3762 | of a 'calls', no further work is required, and *fixP has been |
| 3763 | set up to make the rest of the code below a no-op. */ |
| 3764 | reloc_callj (fixP); |
| 3765 | #endif |
| 3766 | |
| 3767 | add_number += S_GET_VALUE (add_symbolP); |
| 3768 | add_number -= md_pcrel_from (fixP); |
| 3769 | |
| 3770 | /* We used to do |
| 3771 | add_number -= segP->scnhdr.s_vaddr; |
| 3772 | if defined (TC_I386) || defined (TE_LYNX). I now |
| 3773 | think that was an error propagated from the case when |
| 3774 | we are going to emit the relocation. If we are not |
| 3775 | going to emit the relocation, then we just want to |
| 3776 | set add_number to the difference between the symbols. |
| 3777 | This is a case that would only arise when there is a |
| 3778 | PC relative reference from a section other than .text |
| 3779 | to a symbol defined in the same section, and the |
| 3780 | reference is not relaxed. Since jump instructions on |
| 3781 | the i386 are relaxed, this could only arise with a |
| 3782 | call instruction. */ |
| 3783 | |
| 3784 | /* Lie. Don't want further pcrel processing. */ |
| 3785 | pcrel = 0; |
| 3786 | if (!TC_FORCE_RELOCATION (fixP)) |
| 3787 | { |
| 3788 | fixP->fx_addsy = NULL; |
| 3789 | fixP->fx_done = 1; |
| 3790 | } |
| 3791 | } |
| 3792 | else |
| 3793 | { |
| 3794 | switch (add_symbol_segment) |
| 3795 | { |
| 3796 | case absolute_section: |
| 3797 | #ifdef TC_I960 |
| 3798 | /* See comment about reloc_callj() above. */ |
| 3799 | reloc_callj (fixP); |
| 3800 | #endif /* TC_I960 */ |
| 3801 | add_number += S_GET_VALUE (add_symbolP); |
| 3802 | add_symbolP = NULL; |
| 3803 | |
| 3804 | if (!TC_FORCE_RELOCATION (fixP)) |
| 3805 | { |
| 3806 | fixP->fx_addsy = NULL; |
| 3807 | fixP->fx_done = 1; |
| 3808 | } |
| 3809 | break; |
| 3810 | default: |
| 3811 | |
| 3812 | #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K) || defined(TC_OR32) |
| 3813 | /* This really should be handled in the linker, but |
| 3814 | backward compatibility forbids. */ |
| 3815 | add_number += S_GET_VALUE (add_symbolP); |
| 3816 | #else |
| 3817 | add_number += S_GET_VALUE (add_symbolP) + |
| 3818 | segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr; |
| 3819 | #endif |
| 3820 | break; |
| 3821 | |
| 3822 | case SEG_UNKNOWN: |
| 3823 | #ifdef TC_I960 |
| 3824 | if ((int) fixP->fx_bit_fixP == 13) |
| 3825 | { |
| 3826 | /* This is a COBR instruction. They have only a |
| 3827 | 13-bit displacement and are only to be used |
| 3828 | for local branches: flag as error, don't generate |
| 3829 | relocation. */ |
| 3830 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3831 | _("can't use COBR format with external label")); |
| 3832 | fixP->fx_addsy = NULL; |
| 3833 | fixP->fx_done = 1; |
| 3834 | continue; |
| 3835 | } |
| 3836 | #endif /* TC_I960 */ |
| 3837 | #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND) |
| 3838 | /* 386 COFF uses a peculiar format in which the |
| 3839 | value of a common symbol is stored in the .text |
| 3840 | segment (I've checked this on SVR3.2 and SCO |
| 3841 | 3.2.2) Ian Taylor <ian@cygnus.com>. */ |
| 3842 | /* This is also true for 68k COFF on sysv machines |
| 3843 | (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on |
| 3844 | UNIX System V/M68000, Release 1.0 from ATT/Bell Labs) |
| 3845 | Philippe De Muyter <phdm@info.ucl.ac.be>. */ |
| 3846 | if (S_IS_COMMON (add_symbolP)) |
| 3847 | add_number += S_GET_VALUE (add_symbolP); |
| 3848 | #endif |
| 3849 | break; |
| 3850 | |
| 3851 | } |
| 3852 | } |
| 3853 | } |
| 3854 | |
| 3855 | if (pcrel) |
| 3856 | { |
| 3857 | #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K) && !defined(TC_OR32) |
| 3858 | /* This adjustment is not correct on the m88k, for which the |
| 3859 | linker does all the computation. */ |
| 3860 | add_number -= md_pcrel_from (fixP); |
| 3861 | #endif |
| 3862 | if (add_symbolP == 0) |
| 3863 | fixP->fx_addsy = &abs_symbol; |
| 3864 | #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K) |
| 3865 | /* On the 386 we must adjust by the segment vaddr as well. |
| 3866 | Ian Taylor. |
| 3867 | |
| 3868 | I changed the i960 to work this way as well. This is |
| 3869 | compatible with the current GNU linker behaviour. I do |
| 3870 | not know what other i960 COFF assemblers do. This is not |
| 3871 | a common case: normally, only assembler code will contain |
| 3872 | a PC relative reloc, and only branches which do not |
| 3873 | originate in the .text section will have a non-zero |
| 3874 | address. |
| 3875 | |
| 3876 | I changed the m68k to work this way as well. This will |
| 3877 | break existing PC relative relocs from sections which do |
| 3878 | not start at address 0, but it will make ld -r work. |
| 3879 | Ian Taylor, 4 Oct 96. */ |
| 3880 | |
| 3881 | add_number -= segP->scnhdr.s_vaddr; |
| 3882 | #endif |
| 3883 | } |
| 3884 | |
| 3885 | md_apply_fix3 (fixP, (valueT *) & add_number, this_segment_type); |
| 3886 | |
| 3887 | if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow) |
| 3888 | { |
| 3889 | #ifndef TC_M88K |
| 3890 | /* The m88k uses the offset field of the reloc to get around |
| 3891 | this problem. */ |
| 3892 | if ((size == 1 |
| 3893 | && ((add_number & ~0xFF) |
| 3894 | || (fixP->fx_signed && (add_number & 0x80))) |
| 3895 | && ((add_number & ~0xFF) != (-1 & ~0xFF) |
| 3896 | || (add_number & 0x80) == 0)) |
| 3897 | || (size == 2 |
| 3898 | && ((add_number & ~0xFFFF) |
| 3899 | || (fixP->fx_signed && (add_number & 0x8000))) |
| 3900 | && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF) |
| 3901 | || (add_number & 0x8000) == 0))) |
| 3902 | { |
| 3903 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3904 | _("Value of %ld too large for field of %d bytes at 0x%lx"), |
| 3905 | (long) add_number, size, |
| 3906 | (unsigned long) (fragP->fr_address + where)); |
| 3907 | } |
| 3908 | #endif |
| 3909 | #ifdef WARN_SIGNED_OVERFLOW_WORD |
| 3910 | /* Warn if a .word value is too large when treated as a |
| 3911 | signed number. We already know it is not too negative. |
| 3912 | This is to catch over-large switches generated by gcc on |
| 3913 | the 68k. */ |
| 3914 | if (!flag_signed_overflow_ok |
| 3915 | && size == 2 |
| 3916 | && add_number > 0x7fff) |
| 3917 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3918 | _("Signed .word overflow; switch may be too large; %ld at 0x%lx"), |
| 3919 | (long) add_number, |
| 3920 | (unsigned long) (fragP->fr_address + where)); |
| 3921 | #endif |
| 3922 | } |
| 3923 | } |
| 3924 | } |
| 3925 | |
| 3926 | /* Fill in the counts in the first entry in a .stab section. */ |
| 3927 | |
| 3928 | static void |
| 3929 | adjust_stab_section (bfd *abfd, segT seg) |
| 3930 | { |
| 3931 | segT stabstrseg = SEG_UNKNOWN; |
| 3932 | const char *secname, *name2; |
| 3933 | char *name; |
| 3934 | char *p = NULL; |
| 3935 | int i, strsz = 0, nsyms; |
| 3936 | fragS *frag = segment_info[seg].frchainP->frch_root; |
| 3937 | |
| 3938 | /* Look for the associated string table section. */ |
| 3939 | |
| 3940 | secname = segment_info[seg].name; |
| 3941 | name = alloca (strlen (secname) + 4); |
| 3942 | strcpy (name, secname); |
| 3943 | strcat (name, "str"); |
| 3944 | |
| 3945 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 3946 | { |
| 3947 | name2 = segment_info[i].name; |
| 3948 | if (name2 != NULL && strneq (name2, name, 8)) |
| 3949 | { |
| 3950 | stabstrseg = i; |
| 3951 | break; |
| 3952 | } |
| 3953 | } |
| 3954 | |
| 3955 | /* If we found the section, get its size. */ |
| 3956 | if (stabstrseg != SEG_UNKNOWN) |
| 3957 | strsz = size_section (abfd, stabstrseg); |
| 3958 | |
| 3959 | nsyms = size_section (abfd, seg) / 12 - 1; |
| 3960 | |
| 3961 | /* Look for the first frag of sufficient size for the initial stab |
| 3962 | symbol, and collect a pointer to it. */ |
| 3963 | while (frag && frag->fr_fix < 12) |
| 3964 | frag = frag->fr_next; |
| 3965 | assert (frag != 0); |
| 3966 | p = frag->fr_literal; |
| 3967 | assert (p != 0); |
| 3968 | |
| 3969 | /* Write in the number of stab symbols and the size of the string |
| 3970 | table. */ |
| 3971 | bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6); |
| 3972 | bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8); |
| 3973 | } |
| 3974 | |
| 3975 | void |
| 3976 | write_object_file (void) |
| 3977 | { |
| 3978 | int i; |
| 3979 | const char *name; |
| 3980 | struct frchain *frchain_ptr; |
| 3981 | object_headers headers; |
| 3982 | unsigned long file_cursor; |
| 3983 | bfd *abfd; |
| 3984 | unsigned int addr; |
| 3985 | abfd = bfd_openw (out_file_name, TARGET_FORMAT); |
| 3986 | |
| 3987 | if (abfd == 0) |
| 3988 | { |
| 3989 | as_perror (_("FATAL: Can't create %s"), out_file_name); |
| 3990 | exit (EXIT_FAILURE); |
| 3991 | } |
| 3992 | bfd_set_format (abfd, bfd_object); |
| 3993 | bfd_set_arch_mach (abfd, BFD_ARCH, machine); |
| 3994 | |
| 3995 | string_byte_count = 4; |
| 3996 | |
| 3997 | /* Run through all the sub-segments and align them up. Also |
| 3998 | close any open frags. We tack a .fill onto the end of the |
| 3999 | frag chain so that any .align's size can be worked by looking |
| 4000 | at the next frag. */ |
| 4001 | for (frchain_ptr = frchain_root; |
| 4002 | frchain_ptr != (struct frchain *) NULL; |
| 4003 | frchain_ptr = frchain_ptr->frch_next) |
| 4004 | { |
| 4005 | int alignment; |
| 4006 | |
| 4007 | subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg); |
| 4008 | |
| 4009 | alignment = SUB_SEGMENT_ALIGN (now_seg, frchain_ptr); |
| 4010 | |
| 4011 | #ifdef md_do_align |
| 4012 | md_do_align (alignment, NULL, 0, 0, alignment_done); |
| 4013 | #endif |
| 4014 | if (subseg_text_p (now_seg)) |
| 4015 | frag_align_code (alignment, 0); |
| 4016 | else |
| 4017 | frag_align (alignment, 0, 0); |
| 4018 | |
| 4019 | #ifdef md_do_align |
| 4020 | alignment_done: |
| 4021 | #endif |
| 4022 | |
| 4023 | frag_wane (frag_now); |
| 4024 | frag_now->fr_fix = 0; |
| 4025 | know (frag_now->fr_next == NULL); |
| 4026 | } |
| 4027 | |
| 4028 | remove_subsegs (); |
| 4029 | |
| 4030 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 4031 | relax_segment (segment_info[i].frchainP->frch_root, i); |
| 4032 | |
| 4033 | /* Relaxation has completed. Freeze all syms. */ |
| 4034 | finalize_syms = 1; |
| 4035 | |
| 4036 | H_SET_NUMBER_OF_SECTIONS (&headers, 0); |
| 4037 | |
| 4038 | /* Find out how big the sections are, and set the addresses. */ |
| 4039 | addr = 0; |
| 4040 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 4041 | { |
| 4042 | long size; |
| 4043 | |
| 4044 | segment_info[i].scnhdr.s_paddr = addr; |
| 4045 | segment_info[i].scnhdr.s_vaddr = addr; |
| 4046 | |
| 4047 | if (segment_info[i].scnhdr.s_name[0]) |
| 4048 | { |
| 4049 | H_SET_NUMBER_OF_SECTIONS (&headers, |
| 4050 | H_GET_NUMBER_OF_SECTIONS (&headers) + 1); |
| 4051 | |
| 4052 | #ifdef COFF_LONG_SECTION_NAMES |
| 4053 | /* Support long section names as found in PE. This code |
| 4054 | must coordinate with that in coff_header_append and |
| 4055 | w_strings. */ |
| 4056 | { |
| 4057 | unsigned int len; |
| 4058 | |
| 4059 | len = strlen (segment_info[i].name); |
| 4060 | if (len > SCNNMLEN) |
| 4061 | string_byte_count += len + 1; |
| 4062 | } |
| 4063 | #endif /* COFF_LONG_SECTION_NAMES */ |
| 4064 | } |
| 4065 | |
| 4066 | size = size_section (abfd, (unsigned int) i); |
| 4067 | addr += size; |
| 4068 | |
| 4069 | /* I think the section alignment is only used on the i960; the |
| 4070 | i960 needs it, and it should do no harm on other targets. */ |
| 4071 | #ifdef ALIGNMENT_IN_S_FLAGS |
| 4072 | segment_info[i].scnhdr.s_flags |= (section_alignment[i] & 0xF) << 8; |
| 4073 | #else |
| 4074 | segment_info[i].scnhdr.s_align = 1 << section_alignment[i]; |
| 4075 | #endif |
| 4076 | |
| 4077 | if (i == SEG_E0) |
| 4078 | H_SET_TEXT_SIZE (&headers, size); |
| 4079 | else if (i == SEG_E1) |
| 4080 | H_SET_DATA_SIZE (&headers, size); |
| 4081 | else if (i == SEG_E2) |
| 4082 | H_SET_BSS_SIZE (&headers, size); |
| 4083 | } |
| 4084 | |
| 4085 | /* Turn the gas native symbol table shape into a coff symbol table. */ |
| 4086 | crawl_symbols (&headers, abfd); |
| 4087 | |
| 4088 | if (string_byte_count == 4) |
| 4089 | string_byte_count = 0; |
| 4090 | |
| 4091 | H_SET_STRING_SIZE (&headers, string_byte_count); |
| 4092 | |
| 4093 | #ifdef tc_frob_file |
| 4094 | tc_frob_file (); |
| 4095 | #endif |
| 4096 | |
| 4097 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 4098 | { |
| 4099 | fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i); |
| 4100 | fixup_segment (&segment_info[i], i); |
| 4101 | } |
| 4102 | |
| 4103 | /* Look for ".stab" segments and fill in their initial symbols |
| 4104 | correctly. */ |
| 4105 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
| 4106 | { |
| 4107 | name = segment_info[i].name; |
| 4108 | |
| 4109 | if (name != NULL |
| 4110 | && strneq (".stab", name, 5) |
| 4111 | && ! strneq (".stabstr", name, 8)) |
| 4112 | adjust_stab_section (abfd, i); |
| 4113 | } |
| 4114 | |
| 4115 | file_cursor = H_GET_TEXT_FILE_OFFSET (&headers); |
| 4116 | |
| 4117 | bfd_seek (abfd, (file_ptr) file_cursor, 0); |
| 4118 | |
| 4119 | /* Plant the data. */ |
| 4120 | fill_section (abfd, &headers, &file_cursor); |
| 4121 | |
| 4122 | do_relocs_for (abfd, &headers, &file_cursor); |
| 4123 | |
| 4124 | do_linenos_for (abfd, &headers, &file_cursor); |
| 4125 | |
| 4126 | H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC); |
| 4127 | #ifndef OBJ_COFF_OMIT_TIMESTAMP |
| 4128 | H_SET_TIME_STAMP (&headers, (long) time (NULL)); |
| 4129 | #else |
| 4130 | H_SET_TIME_STAMP (&headers, 0); |
| 4131 | #endif |
| 4132 | #ifdef TC_COFF_SET_MACHINE |
| 4133 | TC_COFF_SET_MACHINE (&headers); |
| 4134 | #endif |
| 4135 | |
| 4136 | #ifndef COFF_FLAGS |
| 4137 | #define COFF_FLAGS 0 |
| 4138 | #endif |
| 4139 | |
| 4140 | #ifdef KEEP_RELOC_INFO |
| 4141 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE (&headers) ? 0 : F_LNNO) | |
| 4142 | COFF_FLAGS | coff_flags)); |
| 4143 | #else |
| 4144 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE (&headers) ? 0 : F_LNNO) | |
| 4145 | (H_GET_RELOCATION_SIZE (&headers) ? 0 : F_RELFLG) | |
| 4146 | COFF_FLAGS | coff_flags)); |
| 4147 | #endif |
| 4148 | |
| 4149 | { |
| 4150 | unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers); |
| 4151 | char *buffer1 = xmalloc (symtable_size + string_byte_count + 1); |
| 4152 | |
| 4153 | H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd)); |
| 4154 | w_symbols (abfd, buffer1, symbol_rootP); |
| 4155 | if (string_byte_count > 0) |
| 4156 | w_strings (buffer1 + symtable_size); |
| 4157 | bfd_bwrite (buffer1, (bfd_size_type) symtable_size + string_byte_count, |
| 4158 | abfd); |
| 4159 | free (buffer1); |
| 4160 | } |
| 4161 | |
| 4162 | coff_header_append (abfd, &headers); |
| 4163 | |
| 4164 | { |
| 4165 | extern bfd *stdoutput; |
| 4166 | stdoutput = abfd; |
| 4167 | } |
| 4168 | } |
| 4169 | |
| 4170 | /* Add a new segment. This is called from subseg_new via the |
| 4171 | obj_new_segment macro. */ |
| 4172 | |
| 4173 | segT |
| 4174 | obj_coff_add_segment (const char *name) |
| 4175 | { |
| 4176 | unsigned int i; |
| 4177 | |
| 4178 | #ifndef COFF_LONG_SECTION_NAMES |
| 4179 | char buf[SCNNMLEN + 1]; |
| 4180 | |
| 4181 | strncpy (buf, name, SCNNMLEN); |
| 4182 | buf[SCNNMLEN] = '\0'; |
| 4183 | name = buf; |
| 4184 | #endif |
| 4185 | |
| 4186 | for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++) |
| 4187 | if (streq (name, segment_info[i].name)) |
| 4188 | return (segT) i; |
| 4189 | |
| 4190 | if (i == SEG_LAST) |
| 4191 | { |
| 4192 | as_bad (_("Too many new sections; can't add \"%s\""), name); |
| 4193 | return now_seg; |
| 4194 | } |
| 4195 | |
| 4196 | /* Add a new section. */ |
| 4197 | strncpy (segment_info[i].scnhdr.s_name, name, |
| 4198 | sizeof (segment_info[i].scnhdr.s_name)); |
| 4199 | segment_info[i].scnhdr.s_flags = STYP_REG; |
| 4200 | segment_info[i].name = xstrdup (name); |
| 4201 | |
| 4202 | return (segT) i; |
| 4203 | } |
| 4204 | |
| 4205 | /* Implement the .section pseudo op: |
| 4206 | .section name {, "flags"} |
| 4207 | ^ ^ |
| 4208 | | +--- optional flags: 'b' for bss |
| 4209 | | 'i' for info |
| 4210 | +-- section name 'l' for lib |
| 4211 | 'n' for noload |
| 4212 | 'o' for over |
| 4213 | 'w' for data |
| 4214 | 'd' (apparently m88k for data) |
| 4215 | 'x' for text |
| 4216 | 'r' for read-only data |
| 4217 | But if the argument is not a quoted string, treat it as a |
| 4218 | subsegment number. */ |
| 4219 | |
| 4220 | void |
| 4221 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
| 4222 | { |
| 4223 | /* Strip out the section name. */ |
| 4224 | char *section_name, *name; |
| 4225 | char c; |
| 4226 | unsigned int exp; |
| 4227 | long flags; |
| 4228 | |
| 4229 | if (flag_mri) |
| 4230 | { |
| 4231 | char type; |
| 4232 | |
| 4233 | s_mri_sect (&type); |
| 4234 | flags = 0; |
| 4235 | if (type == 'C') |
| 4236 | flags = STYP_TEXT; |
| 4237 | else if (type == 'D') |
| 4238 | flags = STYP_DATA; |
| 4239 | segment_info[now_seg].scnhdr.s_flags |= flags; |
| 4240 | |
| 4241 | return; |
| 4242 | } |
| 4243 | |
| 4244 | section_name = input_line_pointer; |
| 4245 | c = get_symbol_end (); |
| 4246 | |
| 4247 | name = xmalloc (input_line_pointer - section_name + 1); |
| 4248 | strcpy (name, section_name); |
| 4249 | |
| 4250 | *input_line_pointer = c; |
| 4251 | |
| 4252 | exp = 0; |
| 4253 | flags = 0; |
| 4254 | |
| 4255 | SKIP_WHITESPACE (); |
| 4256 | if (*input_line_pointer == ',') |
| 4257 | { |
| 4258 | ++input_line_pointer; |
| 4259 | SKIP_WHITESPACE (); |
| 4260 | |
| 4261 | if (*input_line_pointer != '"') |
| 4262 | exp = get_absolute_expression (); |
| 4263 | else |
| 4264 | { |
| 4265 | ++input_line_pointer; |
| 4266 | while (*input_line_pointer != '"' |
| 4267 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) |
| 4268 | { |
| 4269 | switch (*input_line_pointer) |
| 4270 | { |
| 4271 | case 'b': flags |= STYP_BSS; break; |
| 4272 | case 'i': flags |= STYP_INFO; break; |
| 4273 | case 'l': flags |= STYP_LIB; break; |
| 4274 | case 'n': flags |= STYP_NOLOAD; break; |
| 4275 | case 'o': flags |= STYP_OVER; break; |
| 4276 | case 'd': |
| 4277 | case 'w': flags |= STYP_DATA; break; |
| 4278 | case 'x': flags |= STYP_TEXT; break; |
| 4279 | case 'r': flags |= STYP_LIT; break; |
| 4280 | default: |
| 4281 | as_warn (_("unknown section attribute '%c'"), |
| 4282 | *input_line_pointer); |
| 4283 | break; |
| 4284 | } |
| 4285 | ++input_line_pointer; |
| 4286 | } |
| 4287 | if (*input_line_pointer == '"') |
| 4288 | ++input_line_pointer; |
| 4289 | } |
| 4290 | } |
| 4291 | |
| 4292 | subseg_new (name, (subsegT) exp); |
| 4293 | |
| 4294 | segment_info[now_seg].scnhdr.s_flags |= flags; |
| 4295 | |
| 4296 | demand_empty_rest_of_line (); |
| 4297 | } |
| 4298 | |
| 4299 | static void |
| 4300 | obj_coff_text (int ignore ATTRIBUTE_UNUSED) |
| 4301 | { |
| 4302 | subseg_new (".text", get_absolute_expression ()); |
| 4303 | } |
| 4304 | |
| 4305 | static void |
| 4306 | obj_coff_data (int ignore ATTRIBUTE_UNUSED) |
| 4307 | { |
| 4308 | if (flag_readonly_data_in_text) |
| 4309 | subseg_new (".text", get_absolute_expression () + 1000); |
| 4310 | else |
| 4311 | subseg_new (".data", get_absolute_expression ()); |
| 4312 | } |
| 4313 | |
| 4314 | static void |
| 4315 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
| 4316 | { |
| 4317 | segT current_seg = now_seg; /* Save current seg. */ |
| 4318 | subsegT current_subseg = now_subseg; |
| 4319 | |
| 4320 | subseg_new (".comment", 0); /* .comment seg. */ |
| 4321 | stringer (1); /* Read string. */ |
| 4322 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ |
| 4323 | } |
| 4324 | |
| 4325 | void |
| 4326 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
| 4327 | { |
| 4328 | symbolS *symbolP; |
| 4329 | |
| 4330 | symbolP = symbol_new (".file", SEG_DEBUG, 0, & zero_address_frag); |
| 4331 | |
| 4332 | S_SET_STORAGE_CLASS (symbolP, C_FILE); |
| 4333 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
| 4334 | |
| 4335 | if (strlen (filename) > FILNMLEN) |
| 4336 | { |
| 4337 | /* Filename is too long to fit into an auxent, |
| 4338 | we stick it into the string table instead. We keep |
| 4339 | a linked list of the filenames we find so we can emit |
| 4340 | them later. */ |
| 4341 | struct filename_list *f = xmalloc (sizeof (* f)); |
| 4342 | |
| 4343 | f->filename = filename; |
| 4344 | f->next = 0; |
| 4345 | |
| 4346 | SA_SET_FILE_FNAME_ZEROS (symbolP, 0); |
| 4347 | SA_SET_FILE_FNAME_OFFSET (symbolP, 1); |
| 4348 | |
| 4349 | if (filename_list_tail) |
| 4350 | filename_list_tail->next = f; |
| 4351 | else |
| 4352 | filename_list_head = f; |
| 4353 | filename_list_tail = f; |
| 4354 | } |
| 4355 | else |
| 4356 | SA_SET_FILE_FNAME (symbolP, filename); |
| 4357 | |
| 4358 | #ifndef NO_LISTING |
| 4359 | { |
| 4360 | extern int listing; |
| 4361 | if (listing) |
| 4362 | listing_source_file (filename); |
| 4363 | } |
| 4364 | #endif |
| 4365 | |
| 4366 | SF_SET_DEBUG (symbolP); |
| 4367 | S_SET_VALUE (symbolP, (valueT) previous_file_symbol); |
| 4368 | |
| 4369 | previous_file_symbol = symbolP; |
| 4370 | |
| 4371 | /* Make sure that the symbol is first on the symbol chain. */ |
| 4372 | if (symbol_rootP != symbolP) |
| 4373 | { |
| 4374 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
| 4375 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); |
| 4376 | } |
| 4377 | } |
| 4378 | |
| 4379 | static void |
| 4380 | obj_coff_lcomm (int ignore ATTRIBUTE_UNUSED) |
| 4381 | { |
| 4382 | s_lcomm (0); |
| 4383 | return; |
| 4384 | } |
| 4385 | |
| 4386 | /* The first entry in a .stab section is special. */ |
| 4387 | |
| 4388 | void |
| 4389 | obj_coff_init_stab_section (segT seg) |
| 4390 | { |
| 4391 | char *file; |
| 4392 | char *p; |
| 4393 | char *stabstr_name; |
| 4394 | unsigned int stroff; |
| 4395 | |
| 4396 | /* Make space for this first symbol. */ |
| 4397 | p = frag_more (12); |
| 4398 | /* Zero it out. */ |
| 4399 | memset (p, 0, 12); |
| 4400 | as_where (&file, (unsigned int *) NULL); |
| 4401 | stabstr_name = alloca (strlen (segment_info[seg].name) + 4); |
| 4402 | strcpy (stabstr_name, segment_info[seg].name); |
| 4403 | strcat (stabstr_name, "str"); |
| 4404 | stroff = get_stab_string_offset (file, stabstr_name); |
| 4405 | know (stroff == 1); |
| 4406 | md_number_to_chars (p, stroff, 4); |
| 4407 | } |
| 4408 | |
| 4409 | #endif /* not BFD_ASSEMBLER */ |
| 4410 | |
| 4411 | const pseudo_typeS coff_pseudo_table[] = |
| 4412 | { |
| 4413 | {"ABORT", s_abort, 0}, |
| 4414 | {"appline", obj_coff_ln, 1}, |
| 4415 | /* We accept the .bss directive for backward compatibility with |
| 4416 | earlier versions of gas. */ |
| 4417 | {"bss", obj_coff_bss, 0}, |
| 4418 | {"def", obj_coff_def, 0}, |
| 4419 | {"dim", obj_coff_dim, 0}, |
| 4420 | {"endef", obj_coff_endef, 0}, |
| 4421 | {"ident", obj_coff_ident, 0}, |
| 4422 | {"line", obj_coff_line, 0}, |
| 4423 | {"ln", obj_coff_ln, 0}, |
| 4424 | {"scl", obj_coff_scl, 0}, |
| 4425 | {"sect", obj_coff_section, 0}, |
| 4426 | {"sect.s", obj_coff_section, 0}, |
| 4427 | {"section", obj_coff_section, 0}, |
| 4428 | {"section.s", obj_coff_section, 0}, |
| 4429 | /* FIXME: We ignore the MRI short attribute. */ |
| 4430 | {"size", obj_coff_size, 0}, |
| 4431 | {"tag", obj_coff_tag, 0}, |
| 4432 | {"type", obj_coff_type, 0}, |
| 4433 | {"val", obj_coff_val, 0}, |
| 4434 | {"version", s_ignore, 0}, |
| 4435 | #ifdef BFD_ASSEMBLER |
| 4436 | {"loc", obj_coff_loc, 0}, |
| 4437 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ |
| 4438 | {"weak", obj_coff_weak, 0}, |
| 4439 | #else |
| 4440 | {"data", obj_coff_data, 0}, |
| 4441 | {"lcomm", obj_coff_lcomm, 0}, |
| 4442 | {"text", obj_coff_text, 0}, |
| 4443 | {"use", obj_coff_section, 0}, |
| 4444 | #endif |
| 4445 | #if defined TC_M88K || defined TC_TIC4X |
| 4446 | /* The m88k and tic4x uses sdef instead of def. */ |
| 4447 | {"sdef", obj_coff_def, 0}, |
| 4448 | #endif |
| 4449 | {NULL, NULL, 0} |
| 4450 | }; |
| 4451 | \f |
| 4452 | #ifdef BFD_ASSEMBLER |
| 4453 | |
| 4454 | /* Support for a COFF emulation. */ |
| 4455 | |
| 4456 | static void |
| 4457 | coff_pop_insert (void) |
| 4458 | { |
| 4459 | pop_insert (coff_pseudo_table); |
| 4460 | } |
| 4461 | |
| 4462 | static int |
| 4463 | coff_separate_stab_sections (void) |
| 4464 | { |
| 4465 | return 1; |
| 4466 | } |
| 4467 | |
| 4468 | const struct format_ops coff_format_ops = |
| 4469 | { |
| 4470 | bfd_target_coff_flavour, |
| 4471 | 0, /* dfl_leading_underscore */ |
| 4472 | 1, /* emit_section_symbols */ |
| 4473 | 0, /* begin */ |
| 4474 | c_dot_file_symbol, |
| 4475 | coff_frob_symbol, |
| 4476 | 0, /* frob_file */ |
| 4477 | 0, /* frob_file_before_adjust */ |
| 4478 | 0, /* frob_file_before_fix */ |
| 4479 | coff_frob_file_after_relocs, |
| 4480 | 0, /* s_get_size */ |
| 4481 | 0, /* s_set_size */ |
| 4482 | 0, /* s_get_align */ |
| 4483 | 0, /* s_set_align */ |
| 4484 | 0, /* s_get_other */ |
| 4485 | 0, /* s_set_other */ |
| 4486 | 0, /* s_get_desc */ |
| 4487 | 0, /* s_set_desc */ |
| 4488 | 0, /* s_get_type */ |
| 4489 | 0, /* s_set_type */ |
| 4490 | 0, /* copy_symbol_attributes */ |
| 4491 | 0, /* generate_asm_lineno */ |
| 4492 | 0, /* process_stab */ |
| 4493 | coff_separate_stab_sections, |
| 4494 | obj_coff_init_stab_section, |
| 4495 | 0, /* sec_sym_ok_for_reloc */ |
| 4496 | coff_pop_insert, |
| 4497 | 0, /* ecoff_set_ext */ |
| 4498 | coff_obj_read_begin_hook, |
| 4499 | coff_obj_symbol_new_hook |
| 4500 | }; |
| 4501 | |
| 4502 | #endif |